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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <boost/lexical_cast.hpp> | |
11fdf7f2 | 16 | #include "include/ceph_assert.h" // lexical_cast includes system assert.h |
7c673cae FG |
17 | |
18 | #include <boost/config/warning_disable.hpp> | |
19 | #include <boost/fusion/include/std_pair.hpp> | |
a8e16298 | 20 | #include <boost/range/adaptor/reversed.hpp> |
7c673cae FG |
21 | |
22 | #include "MDSRank.h" | |
23 | #include "Server.h" | |
24 | #include "Locker.h" | |
25 | #include "MDCache.h" | |
26 | #include "MDLog.h" | |
27 | #include "Migrator.h" | |
28 | #include "MDBalancer.h" | |
29 | #include "InoTable.h" | |
30 | #include "SnapClient.h" | |
31 | #include "Mutation.h" | |
f67539c2 | 32 | #include "MetricsHandler.h" |
11fdf7f2 | 33 | #include "cephfs_features.h" |
7c673cae FG |
34 | |
35 | #include "msg/Messenger.h" | |
36 | ||
37 | #include "osdc/Objecter.h" | |
38 | ||
7c673cae | 39 | #include "events/EUpdate.h" |
f67539c2 | 40 | #include "events/EPeerUpdate.h" |
7c673cae FG |
41 | #include "events/ESession.h" |
42 | #include "events/EOpen.h" | |
43 | #include "events/ECommitted.h" | |
9f95a23c | 44 | #include "events/EPurged.h" |
7c673cae | 45 | |
11fdf7f2 | 46 | #include "include/stringify.h" |
7c673cae FG |
47 | #include "include/filepath.h" |
48 | #include "common/errno.h" | |
49 | #include "common/Timer.h" | |
50 | #include "common/perf_counters.h" | |
51 | #include "include/compat.h" | |
52 | #include "osd/OSDMap.h" | |
53 | ||
54 | #include <errno.h> | |
55 | ||
56 | #include <list> | |
f67539c2 | 57 | #include <regex> |
11fdf7f2 | 58 | #include <string_view> |
f67539c2 | 59 | #include <functional> |
7c673cae FG |
60 | |
61 | #include "common/config.h" | |
62 | ||
63 | #define dout_context g_ceph_context | |
64 | #define dout_subsys ceph_subsys_mds | |
65 | #undef dout_prefix | |
66 | #define dout_prefix *_dout << "mds." << mds->get_nodeid() << ".server " | |
67 | ||
20effc67 TL |
68 | using namespace std; |
69 | ||
11fdf7f2 | 70 | class ServerContext : public MDSContext { |
7c673cae FG |
71 | protected: |
72 | Server *server; | |
73 | MDSRank *get_mds() override | |
74 | { | |
75 | return server->mds; | |
76 | } | |
77 | ||
78 | public: | |
79 | explicit ServerContext(Server *s) : server(s) { | |
11fdf7f2 | 80 | ceph_assert(server != NULL); |
7c673cae FG |
81 | } |
82 | }; | |
83 | ||
9f95a23c TL |
84 | class Batch_Getattr_Lookup : public BatchOp { |
85 | protected: | |
86 | Server* server; | |
87 | ceph::ref_t<MDRequestImpl> mdr; | |
f91f0fd5 | 88 | std::vector<ceph::ref_t<MDRequestImpl>> batch_reqs; |
9f95a23c TL |
89 | int res = 0; |
90 | public: | |
f91f0fd5 TL |
91 | Batch_Getattr_Lookup(Server* s, const ceph::ref_t<MDRequestImpl>& r) |
92 | : server(s), mdr(r) { | |
93 | if (mdr->client_request->get_op() == CEPH_MDS_OP_LOOKUP) | |
94 | mdr->batch_op_map = &mdr->dn[0].back()->batch_ops; | |
95 | else | |
96 | mdr->batch_op_map = &mdr->in[0]->batch_ops; | |
97 | } | |
98 | void add_request(const ceph::ref_t<MDRequestImpl>& r) override { | |
99 | batch_reqs.push_back(r); | |
9f95a23c | 100 | } |
f91f0fd5 TL |
101 | ceph::ref_t<MDRequestImpl> find_new_head() override { |
102 | while (!batch_reqs.empty()) { | |
103 | auto r = std::move(batch_reqs.back()); | |
104 | batch_reqs.pop_back(); | |
105 | if (r->killed) | |
106 | continue; | |
107 | ||
108 | r->batch_op_map = mdr->batch_op_map; | |
109 | mdr->batch_op_map = nullptr; | |
110 | mdr = r; | |
111 | return mdr; | |
112 | } | |
113 | return nullptr; | |
9f95a23c TL |
114 | } |
115 | void _forward(mds_rank_t t) override { | |
f91f0fd5 | 116 | MDCache* mdcache = server->mdcache; |
9f95a23c TL |
117 | mdcache->mds->forward_message_mds(mdr->release_client_request(), t); |
118 | mdr->set_mds_stamp(ceph_clock_now()); | |
f91f0fd5 | 119 | for (auto& m : batch_reqs) { |
9f95a23c TL |
120 | if (!m->killed) |
121 | mdcache->request_forward(m, t); | |
122 | } | |
f91f0fd5 | 123 | batch_reqs.clear(); |
9f95a23c TL |
124 | } |
125 | void _respond(int r) override { | |
126 | mdr->set_mds_stamp(ceph_clock_now()); | |
f91f0fd5 | 127 | for (auto& m : batch_reqs) { |
9f95a23c TL |
128 | if (!m->killed) { |
129 | m->tracei = mdr->tracei; | |
130 | m->tracedn = mdr->tracedn; | |
131 | server->respond_to_request(m, r); | |
132 | } | |
133 | } | |
f91f0fd5 | 134 | batch_reqs.clear(); |
9f95a23c TL |
135 | server->reply_client_request(mdr, make_message<MClientReply>(*mdr->client_request, r)); |
136 | } | |
137 | void print(std::ostream& o) { | |
138 | o << "[batch front=" << *mdr << "]"; | |
139 | } | |
140 | }; | |
141 | ||
7c673cae FG |
142 | class ServerLogContext : public MDSLogContextBase { |
143 | protected: | |
144 | Server *server; | |
145 | MDSRank *get_mds() override | |
146 | { | |
147 | return server->mds; | |
148 | } | |
149 | ||
150 | MDRequestRef mdr; | |
151 | void pre_finish(int r) override { | |
152 | if (mdr) | |
153 | mdr->mark_event("journal_committed: "); | |
154 | } | |
155 | public: | |
156 | explicit ServerLogContext(Server *s) : server(s) { | |
11fdf7f2 | 157 | ceph_assert(server != NULL); |
7c673cae FG |
158 | } |
159 | explicit ServerLogContext(Server *s, MDRequestRef& r) : server(s), mdr(r) { | |
11fdf7f2 | 160 | ceph_assert(server != NULL); |
7c673cae FG |
161 | } |
162 | }; | |
163 | ||
164 | void Server::create_logger() | |
165 | { | |
166 | PerfCountersBuilder plb(g_ceph_context, "mds_server", l_mdss_first, l_mdss_last); | |
91327a77 AA |
167 | |
168 | plb.add_u64_counter(l_mdss_handle_client_request, "handle_client_request", | |
169 | "Client requests", "hcr", PerfCountersBuilder::PRIO_INTERESTING); | |
f67539c2 TL |
170 | plb.add_u64_counter(l_mdss_handle_peer_request, "handle_peer_request", |
171 | "Peer requests", "hsr", PerfCountersBuilder::PRIO_INTERESTING); | |
91327a77 AA |
172 | plb.add_u64_counter(l_mdss_handle_client_session, |
173 | "handle_client_session", "Client session messages", "hcs", | |
174 | PerfCountersBuilder::PRIO_INTERESTING); | |
11fdf7f2 TL |
175 | plb.add_u64_counter(l_mdss_cap_revoke_eviction, "cap_revoke_eviction", |
176 | "Cap Revoke Client Eviction", "cre", PerfCountersBuilder::PRIO_INTERESTING); | |
adb31ebb TL |
177 | plb.add_u64_counter(l_mdss_cap_acquisition_throttle, |
178 | "cap_acquisition_throttle", "Cap acquisition throttle counter", "cat", | |
179 | PerfCountersBuilder::PRIO_INTERESTING); | |
91327a77 AA |
180 | |
181 | // fop latencies are useful | |
182 | plb.set_prio_default(PerfCountersBuilder::PRIO_USEFUL); | |
183 | plb.add_time_avg(l_mdss_req_lookuphash_latency, "req_lookuphash_latency", | |
184 | "Request type lookup hash of inode latency"); | |
185 | plb.add_time_avg(l_mdss_req_lookupino_latency, "req_lookupino_latency", | |
186 | "Request type lookup inode latency"); | |
187 | plb.add_time_avg(l_mdss_req_lookupparent_latency, "req_lookupparent_latency", | |
188 | "Request type lookup parent latency"); | |
189 | plb.add_time_avg(l_mdss_req_lookupname_latency, "req_lookupname_latency", | |
190 | "Request type lookup name latency"); | |
191 | plb.add_time_avg(l_mdss_req_lookup_latency, "req_lookup_latency", | |
192 | "Request type lookup latency"); | |
193 | plb.add_time_avg(l_mdss_req_lookupsnap_latency, "req_lookupsnap_latency", | |
194 | "Request type lookup snapshot latency"); | |
195 | plb.add_time_avg(l_mdss_req_getattr_latency, "req_getattr_latency", | |
196 | "Request type get attribute latency"); | |
197 | plb.add_time_avg(l_mdss_req_setattr_latency, "req_setattr_latency", | |
198 | "Request type set attribute latency"); | |
199 | plb.add_time_avg(l_mdss_req_setlayout_latency, "req_setlayout_latency", | |
200 | "Request type set file layout latency"); | |
201 | plb.add_time_avg(l_mdss_req_setdirlayout_latency, "req_setdirlayout_latency", | |
202 | "Request type set directory layout latency"); | |
1d09f67e TL |
203 | plb.add_time_avg(l_mdss_req_getvxattr_latency, "req_getvxattr_latency", |
204 | "Request type get virtual extended attribute latency"); | |
91327a77 AA |
205 | plb.add_time_avg(l_mdss_req_setxattr_latency, "req_setxattr_latency", |
206 | "Request type set extended attribute latency"); | |
207 | plb.add_time_avg(l_mdss_req_rmxattr_latency, "req_rmxattr_latency", | |
208 | "Request type remove extended attribute latency"); | |
209 | plb.add_time_avg(l_mdss_req_readdir_latency, "req_readdir_latency", | |
210 | "Request type read directory latency"); | |
211 | plb.add_time_avg(l_mdss_req_setfilelock_latency, "req_setfilelock_latency", | |
212 | "Request type set file lock latency"); | |
213 | plb.add_time_avg(l_mdss_req_getfilelock_latency, "req_getfilelock_latency", | |
214 | "Request type get file lock latency"); | |
215 | plb.add_time_avg(l_mdss_req_create_latency, "req_create_latency", | |
216 | "Request type create latency"); | |
217 | plb.add_time_avg(l_mdss_req_open_latency, "req_open_latency", | |
218 | "Request type open latency"); | |
219 | plb.add_time_avg(l_mdss_req_mknod_latency, "req_mknod_latency", | |
220 | "Request type make node latency"); | |
221 | plb.add_time_avg(l_mdss_req_link_latency, "req_link_latency", | |
222 | "Request type link latency"); | |
223 | plb.add_time_avg(l_mdss_req_unlink_latency, "req_unlink_latency", | |
224 | "Request type unlink latency"); | |
225 | plb.add_time_avg(l_mdss_req_rmdir_latency, "req_rmdir_latency", | |
226 | "Request type remove directory latency"); | |
227 | plb.add_time_avg(l_mdss_req_rename_latency, "req_rename_latency", | |
228 | "Request type rename latency"); | |
229 | plb.add_time_avg(l_mdss_req_mkdir_latency, "req_mkdir_latency", | |
230 | "Request type make directory latency"); | |
231 | plb.add_time_avg(l_mdss_req_symlink_latency, "req_symlink_latency", | |
232 | "Request type symbolic link latency"); | |
233 | plb.add_time_avg(l_mdss_req_lssnap_latency, "req_lssnap_latency", | |
234 | "Request type list snapshot latency"); | |
235 | plb.add_time_avg(l_mdss_req_mksnap_latency, "req_mksnap_latency", | |
236 | "Request type make snapshot latency"); | |
237 | plb.add_time_avg(l_mdss_req_rmsnap_latency, "req_rmsnap_latency", | |
238 | "Request type remove snapshot latency"); | |
239 | plb.add_time_avg(l_mdss_req_renamesnap_latency, "req_renamesnap_latency", | |
240 | "Request type rename snapshot latency"); | |
241 | ||
91327a77 AA |
242 | plb.set_prio_default(PerfCountersBuilder::PRIO_DEBUGONLY); |
243 | plb.add_u64_counter(l_mdss_dispatch_client_request, "dispatch_client_request", | |
244 | "Client requests dispatched"); | |
f67539c2 | 245 | plb.add_u64_counter(l_mdss_dispatch_peer_request, "dispatch_server_request", |
91327a77 AA |
246 | "Server requests dispatched"); |
247 | ||
7c673cae FG |
248 | logger = plb.create_perf_counters(); |
249 | g_ceph_context->get_perfcounters_collection()->add(logger); | |
250 | } | |
251 | ||
f67539c2 | 252 | Server::Server(MDSRank *m, MetricsHandler *metrics_handler) : |
7c673cae FG |
253 | mds(m), |
254 | mdcache(mds->mdcache), mdlog(mds->mdlog), | |
f67539c2 TL |
255 | recall_throttle(g_conf().get_val<double>("mds_recall_max_decay_rate")), |
256 | metrics_handler(metrics_handler) | |
7c673cae | 257 | { |
f91f0fd5 | 258 | forward_all_requests_to_auth = g_conf().get_val<bool>("mds_forward_all_requests_to_auth"); |
92f5a8d4 | 259 | replay_unsafe_with_closed_session = g_conf().get_val<bool>("mds_replay_unsafe_with_closed_session"); |
81eedcae | 260 | cap_revoke_eviction_timeout = g_conf().get_val<double>("mds_cap_revoke_eviction_timeout"); |
9f95a23c TL |
261 | max_snaps_per_dir = g_conf().get_val<uint64_t>("mds_max_snaps_per_dir"); |
262 | delegate_inos_pct = g_conf().get_val<uint64_t>("mds_client_delegate_inos_pct"); | |
adb31ebb TL |
263 | max_caps_per_client = g_conf().get_val<uint64_t>("mds_max_caps_per_client"); |
264 | cap_acquisition_throttle = g_conf().get_val<uint64_t>("mds_session_cap_acquisition_throttle"); | |
265 | max_caps_throttle_ratio = g_conf().get_val<double>("mds_session_max_caps_throttle_ratio"); | |
266 | caps_throttle_retry_request_timeout = g_conf().get_val<double>("mds_cap_acquisition_throttle_retry_request_timeout"); | |
20effc67 TL |
267 | dir_max_entries = g_conf().get_val<uint64_t>("mds_dir_max_entries"); |
268 | bal_fragment_size_max = g_conf().get_val<int64_t>("mds_bal_fragment_size_max"); | |
11fdf7f2 | 269 | supported_features = feature_bitset_t(CEPHFS_FEATURES_MDS_SUPPORTED); |
33c7a0ef | 270 | supported_metric_spec = feature_bitset_t(CEPHFS_METRIC_FEATURES_ALL); |
7c673cae FG |
271 | } |
272 | ||
9f95a23c | 273 | void Server::dispatch(const cref_t<Message> &m) |
7c673cae FG |
274 | { |
275 | switch (m->get_type()) { | |
276 | case CEPH_MSG_CLIENT_RECONNECT: | |
9f95a23c | 277 | handle_client_reconnect(ref_cast<MClientReconnect>(m)); |
7c673cae FG |
278 | return; |
279 | } | |
280 | ||
92f5a8d4 TL |
281 | /* |
282 | *In reconnect phase, client sent unsafe requests to mds before reconnect msg. Seting sessionclosed_isok will handle scenario like this: | |
283 | ||
284 | 1. In reconnect phase, client sent unsafe requests to mds. | |
285 | 2. It reached reconnect timeout. All sessions without sending reconnect msg in time, some of which may had sent unsafe requests, are marked as closed. | |
286 | (Another situation is #31668, which will deny all client reconnect msg to speed up reboot). | |
287 | 3.So these unsafe request from session without sending reconnect msg in time or being denied could be handled in clientreplay phase. | |
288 | ||
289 | */ | |
290 | bool sessionclosed_isok = replay_unsafe_with_closed_session; | |
7c673cae | 291 | // active? |
f67539c2 | 292 | // handle_peer_request()/handle_client_session() will wait if necessary |
94b18763 | 293 | if (m->get_type() == CEPH_MSG_CLIENT_REQUEST && !mds->is_active()) { |
9f95a23c | 294 | const auto &req = ref_cast<MClientRequest>(m); |
94b18763 FG |
295 | if (mds->is_reconnect() || mds->get_want_state() == CEPH_MDS_STATE_RECONNECT) { |
296 | Session *session = mds->get_session(req); | |
92f5a8d4 | 297 | if (!session || (!session->is_open() && !sessionclosed_isok)) { |
7c673cae | 298 | dout(5) << "session is closed, dropping " << req->get_reqid() << dendl; |
7c673cae FG |
299 | return; |
300 | } | |
301 | bool queue_replay = false; | |
9f95a23c | 302 | if (req->is_replay() || req->is_async()) { |
7c673cae FG |
303 | dout(3) << "queuing replayed op" << dendl; |
304 | queue_replay = true; | |
11fdf7f2 TL |
305 | if (req->head.ino && |
306 | !session->have_completed_request(req->get_reqid().tid, nullptr)) { | |
f67539c2 TL |
307 | inodeno_t ino(req->head.ino); |
308 | mdcache->add_replay_ino_alloc(ino); | |
309 | if (replay_unsafe_with_closed_session && | |
310 | session->free_prealloc_inos.contains(ino)) { | |
311 | // don't purge inodes that will be created by later replay | |
312 | session->free_prealloc_inos.erase(ino); | |
313 | session->delegated_inos.insert(ino); | |
314 | } | |
11fdf7f2 | 315 | } |
7c673cae FG |
316 | } else if (req->get_retry_attempt()) { |
317 | // process completed request in clientreplay stage. The completed request | |
318 | // might have created new file/directorie. This guarantees MDS sends a reply | |
319 | // to client before other request modifies the new file/directorie. | |
320 | if (session->have_completed_request(req->get_reqid().tid, NULL)) { | |
321 | dout(3) << "queuing completed op" << dendl; | |
322 | queue_replay = true; | |
323 | } | |
324 | // this request was created before the cap reconnect message, drop any embedded | |
325 | // cap releases. | |
326 | req->releases.clear(); | |
327 | } | |
328 | if (queue_replay) { | |
329 | req->mark_queued_for_replay(); | |
330 | mds->enqueue_replay(new C_MDS_RetryMessage(mds, m)); | |
331 | return; | |
332 | } | |
333 | } | |
334 | ||
335 | bool wait_for_active = true; | |
94b18763 | 336 | if (mds->is_stopping()) { |
28e407b8 | 337 | wait_for_active = false; |
7c673cae | 338 | } else if (mds->is_clientreplay()) { |
94b18763 | 339 | if (req->is_queued_for_replay()) { |
7c673cae | 340 | wait_for_active = false; |
7c673cae FG |
341 | } |
342 | } | |
343 | if (wait_for_active) { | |
344 | dout(3) << "not active yet, waiting" << dendl; | |
345 | mds->wait_for_active(new C_MDS_RetryMessage(mds, m)); | |
346 | return; | |
347 | } | |
348 | } | |
349 | ||
350 | switch (m->get_type()) { | |
351 | case CEPH_MSG_CLIENT_SESSION: | |
9f95a23c | 352 | handle_client_session(ref_cast<MClientSession>(m)); |
7c673cae FG |
353 | return; |
354 | case CEPH_MSG_CLIENT_REQUEST: | |
9f95a23c | 355 | handle_client_request(ref_cast<MClientRequest>(m)); |
11fdf7f2 TL |
356 | return; |
357 | case CEPH_MSG_CLIENT_RECLAIM: | |
9f95a23c | 358 | handle_client_reclaim(ref_cast<MClientReclaim>(m)); |
7c673cae | 359 | return; |
f67539c2 TL |
360 | case MSG_MDS_PEER_REQUEST: |
361 | handle_peer_request(ref_cast<MMDSPeerRequest>(m)); | |
7c673cae FG |
362 | return; |
363 | default: | |
364 | derr << "server unknown message " << m->get_type() << dendl; | |
11fdf7f2 | 365 | ceph_abort_msg("server unknown message"); |
7c673cae FG |
366 | } |
367 | } | |
368 | ||
369 | ||
370 | ||
371 | // ---------------------------------------------------------- | |
372 | // SESSION management | |
373 | ||
374 | class C_MDS_session_finish : public ServerLogContext { | |
375 | Session *session; | |
376 | uint64_t state_seq; | |
377 | bool open; | |
378 | version_t cmapv; | |
f67539c2 | 379 | interval_set<inodeno_t> inos_to_free; |
7c673cae | 380 | version_t inotablev; |
f67539c2 | 381 | interval_set<inodeno_t> inos_to_purge; |
9f95a23c | 382 | LogSegment *ls = nullptr; |
7c673cae FG |
383 | Context *fin; |
384 | public: | |
f67539c2 | 385 | C_MDS_session_finish(Server *srv, Session *se, uint64_t sseq, bool s, version_t mv, Context *fin_ = nullptr) : |
7c673cae | 386 | ServerLogContext(srv), session(se), state_seq(sseq), open(s), cmapv(mv), inotablev(0), fin(fin_) { } |
f67539c2 TL |
387 | C_MDS_session_finish(Server *srv, Session *se, uint64_t sseq, bool s, version_t mv, |
388 | const interval_set<inodeno_t>& to_free, version_t iv, | |
389 | const interval_set<inodeno_t>& to_purge, LogSegment *_ls, Context *fin_ = nullptr) : | |
390 | ServerLogContext(srv), session(se), state_seq(sseq), open(s), cmapv(mv), | |
391 | inos_to_free(to_free), inotablev(iv), inos_to_purge(to_purge), ls(_ls), fin(fin_) {} | |
7c673cae | 392 | void finish(int r) override { |
11fdf7f2 | 393 | ceph_assert(r == 0); |
f67539c2 | 394 | server->_session_logged(session, state_seq, open, cmapv, inos_to_free, inotablev, inos_to_purge, ls); |
7c673cae FG |
395 | if (fin) { |
396 | fin->complete(r); | |
397 | } | |
398 | } | |
399 | }; | |
400 | ||
11fdf7f2 TL |
401 | Session* Server::find_session_by_uuid(std::string_view uuid) |
402 | { | |
403 | Session* session = nullptr; | |
404 | for (auto& it : mds->sessionmap.get_sessions()) { | |
405 | auto& metadata = it.second->info.client_metadata; | |
406 | ||
407 | auto p = metadata.find("uuid"); | |
408 | if (p == metadata.end() || p->second != uuid) | |
409 | continue; | |
410 | ||
411 | if (!session) { | |
412 | session = it.second; | |
413 | } else if (!session->reclaiming_from) { | |
20effc67 | 414 | ceph_assert(it.second->reclaiming_from == session); |
11fdf7f2 TL |
415 | session = it.second; |
416 | } else { | |
20effc67 | 417 | ceph_assert(session->reclaiming_from == it.second); |
11fdf7f2 TL |
418 | } |
419 | } | |
420 | return session; | |
421 | } | |
422 | ||
9f95a23c | 423 | void Server::reclaim_session(Session *session, const cref_t<MClientReclaim> &m) |
11fdf7f2 TL |
424 | { |
425 | if (!session->is_open() && !session->is_stale()) { | |
426 | dout(10) << "session not open, dropping this req" << dendl; | |
427 | return; | |
428 | } | |
429 | ||
9f95a23c | 430 | auto reply = make_message<MClientReclaimReply>(0); |
11fdf7f2 TL |
431 | if (m->get_uuid().empty()) { |
432 | dout(10) << __func__ << " invalid message (no uuid)" << dendl; | |
f67539c2 | 433 | reply->set_result(-CEPHFS_EINVAL); |
11fdf7f2 TL |
434 | mds->send_message_client(reply, session); |
435 | return; | |
436 | } | |
437 | ||
438 | unsigned flags = m->get_flags(); | |
439 | if (flags != CEPH_RECLAIM_RESET) { // currently only support reset | |
440 | dout(10) << __func__ << " unsupported flags" << dendl; | |
f67539c2 | 441 | reply->set_result(-CEPHFS_EOPNOTSUPP); |
11fdf7f2 TL |
442 | mds->send_message_client(reply, session); |
443 | return; | |
444 | } | |
445 | ||
446 | Session* target = find_session_by_uuid(m->get_uuid()); | |
447 | if (target) { | |
448 | if (session->info.auth_name != target->info.auth_name) { | |
449 | dout(10) << __func__ << " session auth_name " << session->info.auth_name | |
450 | << " != target auth_name " << target->info.auth_name << dendl; | |
f67539c2 | 451 | reply->set_result(-CEPHFS_EPERM); |
11fdf7f2 TL |
452 | mds->send_message_client(reply, session); |
453 | } | |
454 | ||
20effc67 TL |
455 | ceph_assert(!target->reclaiming_from); |
456 | ceph_assert(!session->reclaiming_from); | |
11fdf7f2 TL |
457 | session->reclaiming_from = target; |
458 | reply->set_addrs(entity_addrvec_t(target->info.inst.addr)); | |
459 | } | |
460 | ||
461 | if (flags & CEPH_RECLAIM_RESET) { | |
462 | finish_reclaim_session(session, reply); | |
463 | return; | |
464 | } | |
465 | ||
466 | ceph_abort(); | |
467 | } | |
468 | ||
9f95a23c | 469 | void Server::finish_reclaim_session(Session *session, const ref_t<MClientReclaimReply> &reply) |
11fdf7f2 TL |
470 | { |
471 | Session *target = session->reclaiming_from; | |
472 | if (target) { | |
473 | session->reclaiming_from = nullptr; | |
474 | ||
475 | Context *send_reply; | |
476 | if (reply) { | |
477 | int64_t session_id = session->get_client().v; | |
9f95a23c | 478 | send_reply = new LambdaContext([this, session_id, reply](int r) { |
20effc67 | 479 | ceph_assert(ceph_mutex_is_locked_by_me(mds->mds_lock)); |
11fdf7f2 TL |
480 | Session *session = mds->sessionmap.get_session(entity_name_t::CLIENT(session_id)); |
481 | if (!session) { | |
482 | return; | |
483 | } | |
484 | auto epoch = mds->objecter->with_osdmap([](const OSDMap &map){ return map.get_epoch(); }); | |
485 | reply->set_epoch(epoch); | |
486 | mds->send_message_client(reply, session); | |
487 | }); | |
488 | } else { | |
489 | send_reply = nullptr; | |
490 | } | |
491 | ||
f67539c2 TL |
492 | bool blocklisted = mds->objecter->with_osdmap([target](const OSDMap &map) { |
493 | return map.is_blocklisted(target->info.inst.addr); | |
11fdf7f2 TL |
494 | }); |
495 | ||
f67539c2 | 496 | if (blocklisted || !g_conf()->mds_session_blocklist_on_evict) { |
11fdf7f2 TL |
497 | kill_session(target, send_reply); |
498 | } else { | |
f67539c2 TL |
499 | CachedStackStringStream css; |
500 | mds->evict_client(target->get_client().v, false, true, *css, send_reply); | |
11fdf7f2 TL |
501 | } |
502 | } else if (reply) { | |
503 | mds->send_message_client(reply, session); | |
504 | } | |
505 | } | |
506 | ||
9f95a23c | 507 | void Server::handle_client_reclaim(const cref_t<MClientReclaim> &m) |
11fdf7f2 TL |
508 | { |
509 | Session *session = mds->get_session(m); | |
510 | dout(3) << __func__ << " " << *m << " from " << m->get_source() << dendl; | |
20effc67 | 511 | ceph_assert(m->get_source().is_client()); // should _not_ come from an mds! |
11fdf7f2 TL |
512 | |
513 | if (!session) { | |
514 | dout(0) << " ignoring sessionless msg " << *m << dendl; | |
515 | return; | |
516 | } | |
517 | ||
20effc67 | 518 | std::string_view fs_name = mds->mdsmap->get_fs_name(); |
f67539c2 TL |
519 | if (!fs_name.empty() && !session->fs_name_capable(fs_name, MAY_READ)) { |
520 | dout(0) << " dropping message not allowed for this fs_name: " << *m << dendl; | |
521 | return; | |
522 | } | |
523 | ||
11fdf7f2 TL |
524 | if (mds->get_state() < MDSMap::STATE_CLIENTREPLAY) { |
525 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
526 | return; | |
527 | } | |
528 | ||
529 | if (m->get_flags() & MClientReclaim::FLAG_FINISH) { | |
530 | finish_reclaim_session(session); | |
531 | } else { | |
532 | reclaim_session(session, m); | |
533 | } | |
534 | } | |
535 | ||
9f95a23c | 536 | void Server::handle_client_session(const cref_t<MClientSession> &m) |
7c673cae FG |
537 | { |
538 | version_t pv; | |
94b18763 | 539 | Session *session = mds->get_session(m); |
7c673cae FG |
540 | |
541 | dout(3) << "handle_client_session " << *m << " from " << m->get_source() << dendl; | |
11fdf7f2 | 542 | ceph_assert(m->get_source().is_client()); // should _not_ come from an mds! |
7c673cae FG |
543 | |
544 | if (!session) { | |
545 | dout(0) << " ignoring sessionless msg " << *m << dendl; | |
9f95a23c | 546 | auto reply = make_message<MClientSession>(CEPH_SESSION_REJECT); |
92f5a8d4 TL |
547 | reply->metadata["error_string"] = "sessionless"; |
548 | mds->send_message(reply, m->get_connection()); | |
7c673cae FG |
549 | return; |
550 | } | |
551 | ||
20effc67 | 552 | std::string_view fs_name = mds->mdsmap->get_fs_name(); |
f67539c2 TL |
553 | if (!fs_name.empty() && !session->fs_name_capable(fs_name, MAY_READ)) { |
554 | dout(0) << " dropping message not allowed for this fs_name: " << *m << dendl; | |
555 | auto reply = make_message<MClientSession>(CEPH_SESSION_REJECT); | |
556 | reply->metadata["error_string"] = "client doesn't have caps for FS \"" + | |
557 | std::string(fs_name) + "\""; | |
558 | mds->send_message(std::move(reply), m->get_connection()); | |
559 | return; | |
560 | } | |
561 | ||
94b18763 FG |
562 | if (m->get_op() == CEPH_SESSION_REQUEST_RENEWCAPS) { |
563 | // always handle renewcaps (state >= MDSMap::STATE_RECONNECT) | |
564 | } else if (m->get_op() == CEPH_SESSION_REQUEST_CLOSE) { | |
565 | // close requests need to be handled when mds is active | |
566 | if (mds->get_state() < MDSMap::STATE_ACTIVE) { | |
567 | mds->wait_for_active(new C_MDS_RetryMessage(mds, m)); | |
568 | return; | |
569 | } | |
570 | } else { | |
571 | if (mds->get_state() < MDSMap::STATE_CLIENTREPLAY) { | |
572 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
573 | return; | |
574 | } | |
575 | } | |
576 | ||
7c673cae FG |
577 | if (logger) |
578 | logger->inc(l_mdss_handle_client_session); | |
579 | ||
580 | uint64_t sseq = 0; | |
581 | switch (m->get_op()) { | |
582 | case CEPH_SESSION_REQUEST_OPEN: | |
583 | if (session->is_opening() || | |
584 | session->is_open() || | |
585 | session->is_stale() || | |
28e407b8 AA |
586 | session->is_killing() || |
587 | terminating_sessions) { | |
7c673cae | 588 | dout(10) << "currently open|opening|stale|killing, dropping this req" << dendl; |
7c673cae FG |
589 | return; |
590 | } | |
11fdf7f2 | 591 | ceph_assert(session->is_closed() || session->is_closing()); |
7c673cae | 592 | |
b32b8144 FG |
593 | if (mds->is_stopping()) { |
594 | dout(10) << "mds is stopping, dropping open req" << dendl; | |
b32b8144 FG |
595 | return; |
596 | } | |
597 | ||
a8e16298 TL |
598 | { |
599 | auto& addr = session->info.inst.addr; | |
9f95a23c | 600 | session->set_client_metadata(client_metadata_t(m->metadata, m->supported_features, m->metric_spec)); |
a8e16298 TL |
601 | auto& client_metadata = session->info.client_metadata; |
602 | ||
11fdf7f2 | 603 | auto log_session_status = [this, m, session](std::string_view status, std::string_view err) { |
a8e16298 TL |
604 | auto now = ceph_clock_now(); |
605 | auto throttle_elapsed = m->get_recv_complete_stamp() - m->get_throttle_stamp(); | |
606 | auto elapsed = now - m->get_recv_stamp(); | |
11fdf7f2 TL |
607 | CachedStackStringStream css; |
608 | *css << "New client session:" | |
a8e16298 TL |
609 | << " addr=\"" << session->info.inst.addr << "\"" |
610 | << ",elapsed=" << elapsed | |
611 | << ",throttled=" << throttle_elapsed | |
612 | << ",status=\"" << status << "\""; | |
613 | if (!err.empty()) { | |
11fdf7f2 | 614 | *css << ",error=\"" << err << "\""; |
a8e16298 TL |
615 | } |
616 | const auto& metadata = session->info.client_metadata; | |
11fdf7f2 TL |
617 | if (auto it = metadata.find("root"); it != metadata.end()) { |
618 | *css << ",root=\"" << it->second << "\""; | |
a8e16298 | 619 | } |
11fdf7f2 TL |
620 | dout(2) << css->strv() << dendl; |
621 | }; | |
622 | ||
a4b75251 TL |
623 | auto send_reject_message = [this, &session, &log_session_status](std::string_view err_str, unsigned flags=0) { |
624 | auto m = make_message<MClientSession>(CEPH_SESSION_REJECT, 0, flags); | |
11fdf7f2 TL |
625 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) |
626 | m->metadata["error_string"] = err_str; | |
627 | mds->send_message_client(m, session); | |
628 | log_session_status("REJECTED", err_str); | |
a8e16298 | 629 | }; |
7c673cae | 630 | |
f67539c2 | 631 | bool blocklisted = mds->objecter->with_osdmap( |
11fdf7f2 | 632 | [&addr](const OSDMap &osd_map) -> bool { |
f67539c2 | 633 | return osd_map.is_blocklisted(addr); |
11fdf7f2 TL |
634 | }); |
635 | ||
f67539c2 TL |
636 | if (blocklisted) { |
637 | dout(10) << "rejecting blocklisted client " << addr << dendl; | |
638 | // This goes on the wire and the "blacklisted" substring is | |
639 | // depended upon by the kernel client for detecting whether it | |
640 | // has been blocklisted. If mounted with recover_session=clean | |
641 | // (since 5.4), it tries to automatically recover itself from | |
642 | // blocklisting. | |
a4b75251 TL |
643 | unsigned flags = 0; |
644 | flags |= MClientSession::SESSION_BLOCKLISTED; | |
645 | send_reject_message("blocklisted (blacklisted)", flags); | |
11fdf7f2 TL |
646 | session->clear(); |
647 | break; | |
7c673cae | 648 | } |
7c673cae | 649 | |
11fdf7f2 TL |
650 | if (client_metadata.features.empty()) |
651 | infer_supported_features(session, client_metadata); | |
652 | ||
653 | dout(20) << __func__ << " CEPH_SESSION_REQUEST_OPEN metadata entries:" << dendl; | |
9f95a23c TL |
654 | dout(20) << " features: '" << client_metadata.features << "'" << dendl; |
655 | dout(20) << " metric specification: [" << client_metadata.metric_spec << "]" << dendl; | |
11fdf7f2 TL |
656 | for (const auto& p : client_metadata) { |
657 | dout(20) << " " << p.first << ": " << p.second << dendl; | |
658 | } | |
659 | ||
660 | feature_bitset_t missing_features = required_client_features; | |
661 | missing_features -= client_metadata.features; | |
662 | if (!missing_features.empty()) { | |
f67539c2 TL |
663 | CachedStackStringStream css; |
664 | *css << "missing required features '" << missing_features << "'"; | |
665 | send_reject_message(css->strv()); | |
92f5a8d4 TL |
666 | mds->clog->warn() << "client session (" << session->info.inst |
667 | << ") lacks required features " << missing_features | |
668 | << "; client supports " << client_metadata.features; | |
11fdf7f2 TL |
669 | session->clear(); |
670 | break; | |
a8e16298 | 671 | } |
7c673cae | 672 | |
a8e16298 TL |
673 | // Special case for the 'root' metadata path; validate that the claimed |
674 | // root is actually within the caps of the session | |
11fdf7f2 TL |
675 | if (auto it = client_metadata.find("root"); it != client_metadata.end()) { |
676 | auto claimed_root = it->second; | |
f67539c2 | 677 | CachedStackStringStream css; |
11fdf7f2 TL |
678 | bool denied = false; |
679 | // claimed_root has a leading "/" which we strip before passing | |
680 | // into caps check | |
681 | if (claimed_root.empty() || claimed_root[0] != '/') { | |
682 | denied = true; | |
f67539c2 | 683 | *css << "invalue root '" << claimed_root << "'"; |
11fdf7f2 TL |
684 | } else if (!session->auth_caps.path_capable(claimed_root.substr(1))) { |
685 | denied = true; | |
f67539c2 | 686 | *css << "non-allowable root '" << claimed_root << "'"; |
11fdf7f2 TL |
687 | } |
688 | ||
689 | if (denied) { | |
690 | // Tell the client we're rejecting their open | |
f67539c2 TL |
691 | send_reject_message(css->strv()); |
692 | mds->clog->warn() << "client session with " << css->strv() | |
11fdf7f2 TL |
693 | << " denied (" << session->info.inst << ")"; |
694 | session->clear(); | |
695 | break; | |
696 | } | |
697 | } | |
698 | ||
699 | if (auto it = client_metadata.find("uuid"); it != client_metadata.end()) { | |
700 | if (find_session_by_uuid(it->second)) { | |
701 | send_reject_message("duplicated session uuid"); | |
702 | mds->clog->warn() << "client session with duplicated session uuid '" | |
703 | << it->second << "' denied (" << session->info.inst << ")"; | |
704 | session->clear(); | |
705 | break; | |
706 | } | |
a8e16298 TL |
707 | } |
708 | ||
f67539c2 TL |
709 | if (session->is_closed()) { |
710 | mds->sessionmap.add_session(session); | |
711 | } | |
a8e16298 TL |
712 | |
713 | pv = mds->sessionmap.mark_projected(session); | |
714 | sseq = mds->sessionmap.set_state(session, Session::STATE_OPENING); | |
715 | mds->sessionmap.touch_session(session); | |
9f95a23c | 716 | auto fin = new LambdaContext([log_session_status = std::move(log_session_status)](int r){ |
11fdf7f2 | 717 | ceph_assert(r == 0); |
a8e16298 TL |
718 | log_session_status("ACCEPTED", ""); |
719 | }); | |
720 | mdlog->start_submit_entry(new ESession(m->get_source_inst(), true, pv, client_metadata), | |
721 | new C_MDS_session_finish(this, session, sseq, true, pv, fin)); | |
11fdf7f2 | 722 | mdlog->flush(); |
a8e16298 | 723 | } |
7c673cae FG |
724 | break; |
725 | ||
726 | case CEPH_SESSION_REQUEST_RENEWCAPS: | |
11fdf7f2 | 727 | if (session->is_open() || session->is_stale()) { |
7c673cae FG |
728 | mds->sessionmap.touch_session(session); |
729 | if (session->is_stale()) { | |
730 | mds->sessionmap.set_state(session, Session::STATE_OPEN); | |
731 | mds->locker->resume_stale_caps(session); | |
732 | mds->sessionmap.touch_session(session); | |
733 | } | |
9f95a23c | 734 | auto reply = make_message<MClientSession>(CEPH_SESSION_RENEWCAPS, m->get_seq()); |
11fdf7f2 | 735 | mds->send_message_client(reply, session); |
7c673cae FG |
736 | } else { |
737 | dout(10) << "ignoring renewcaps on non open|stale session (" << session->get_state_name() << ")" << dendl; | |
738 | } | |
739 | break; | |
740 | ||
741 | case CEPH_SESSION_REQUEST_CLOSE: | |
742 | { | |
743 | if (session->is_closed() || | |
744 | session->is_closing() || | |
745 | session->is_killing()) { | |
746 | dout(10) << "already closed|closing|killing, dropping this req" << dendl; | |
7c673cae FG |
747 | return; |
748 | } | |
749 | if (session->is_importing()) { | |
750 | dout(10) << "ignoring close req on importing session" << dendl; | |
7c673cae FG |
751 | return; |
752 | } | |
11fdf7f2 | 753 | ceph_assert(session->is_open() || |
7c673cae FG |
754 | session->is_stale() || |
755 | session->is_opening()); | |
756 | if (m->get_seq() < session->get_push_seq()) { | |
757 | dout(10) << "old push seq " << m->get_seq() << " < " << session->get_push_seq() | |
758 | << ", dropping" << dendl; | |
7c673cae FG |
759 | return; |
760 | } | |
761 | // We are getting a seq that is higher than expected. | |
762 | // Handle the same as any other seqn error. | |
763 | // | |
764 | if (m->get_seq() != session->get_push_seq()) { | |
765 | dout(0) << "old push seq " << m->get_seq() << " != " << session->get_push_seq() | |
766 | << ", BUGGY!" << dendl; | |
767 | mds->clog->warn() << "incorrect push seq " << m->get_seq() << " != " | |
768 | << session->get_push_seq() << ", dropping" << " from client : " << session->get_human_name(); | |
7c673cae FG |
769 | return; |
770 | } | |
771 | journal_close_session(session, Session::STATE_CLOSING, NULL); | |
772 | } | |
773 | break; | |
774 | ||
775 | case CEPH_SESSION_FLUSHMSG_ACK: | |
776 | finish_flush_session(session, m->get_seq()); | |
777 | break; | |
778 | ||
31f18b77 | 779 | case CEPH_SESSION_REQUEST_FLUSH_MDLOG: |
b32b8144 FG |
780 | if (mds->is_active()) |
781 | mdlog->flush(); | |
31f18b77 FG |
782 | break; |
783 | ||
7c673cae FG |
784 | default: |
785 | ceph_abort(); | |
786 | } | |
7c673cae FG |
787 | } |
788 | ||
f91f0fd5 | 789 | void Server::flush_session(Session *session, MDSGatherBuilder& gather) { |
f64942e4 | 790 | if (!session->is_open() || |
11fdf7f2 TL |
791 | !session->get_connection() || |
792 | !session->get_connection()->has_feature(CEPH_FEATURE_EXPORT_PEER)) { | |
f64942e4 AA |
793 | return; |
794 | } | |
795 | ||
f91f0fd5 | 796 | version_t seq = session->wait_for_flush(gather.new_sub()); |
11fdf7f2 | 797 | mds->send_message_client( |
9f95a23c | 798 | make_message<MClientSession>(CEPH_SESSION_FLUSHMSG, seq), session); |
f64942e4 AA |
799 | } |
800 | ||
7c673cae FG |
801 | void Server::flush_client_sessions(set<client_t>& client_set, MDSGatherBuilder& gather) |
802 | { | |
f91f0fd5 TL |
803 | for (const auto& client : client_set) { |
804 | Session *session = mds->sessionmap.get_session(entity_name_t::CLIENT(client.v)); | |
11fdf7f2 | 805 | ceph_assert(session); |
f91f0fd5 | 806 | flush_session(session, gather); |
7c673cae FG |
807 | } |
808 | } | |
809 | ||
810 | void Server::finish_flush_session(Session *session, version_t seq) | |
811 | { | |
11fdf7f2 | 812 | MDSContext::vec finished; |
7c673cae FG |
813 | session->finish_flush(seq, finished); |
814 | mds->queue_waiters(finished); | |
815 | } | |
816 | ||
817 | void Server::_session_logged(Session *session, uint64_t state_seq, bool open, version_t pv, | |
f67539c2 TL |
818 | const interval_set<inodeno_t>& inos_to_free, version_t piv, |
819 | const interval_set<inodeno_t>& inos_to_purge, LogSegment *ls) | |
7c673cae | 820 | { |
9f95a23c TL |
821 | dout(10) << "_session_logged " << session->info.inst |
822 | << " state_seq " << state_seq | |
f67539c2 TL |
823 | << " " << (open ? "open":"close") << " " << pv |
824 | << " inos_to_free " << inos_to_free << " inotablev " << piv | |
825 | << " inos_to_purge " << inos_to_purge << dendl; | |
826 | ||
827 | if (!open) { | |
828 | if (inos_to_purge.size()){ | |
829 | ceph_assert(ls); | |
830 | session->info.prealloc_inos.subtract(inos_to_purge); | |
831 | ls->purging_inodes.insert(inos_to_purge); | |
832 | if (mds->is_clientreplay() || mds->is_active() || mds->is_stopping()) | |
833 | mdcache->purge_inodes(inos_to_purge, ls); | |
834 | } | |
835 | ||
836 | if (inos_to_free.size()) { | |
837 | ceph_assert(piv); | |
838 | ceph_assert(session->is_closing() || session->is_killing() || | |
839 | session->is_opening()); // re-open closing session | |
840 | session->info.prealloc_inos.subtract(inos_to_free); | |
841 | mds->inotable->apply_release_ids(inos_to_free); | |
842 | ceph_assert(mds->inotable->get_version() == piv); | |
843 | } | |
844 | session->free_prealloc_inos = session->info.prealloc_inos; | |
9f95a23c | 845 | session->delegated_inos.clear(); |
7c673cae FG |
846 | } |
847 | ||
848 | mds->sessionmap.mark_dirty(session); | |
849 | ||
850 | // apply | |
851 | if (session->get_state_seq() != state_seq) { | |
852 | dout(10) << " journaled state_seq " << state_seq << " != current " << session->get_state_seq() | |
853 | << ", noop" << dendl; | |
854 | // close must have been canceled (by an import?), or any number of other things.. | |
855 | } else if (open) { | |
11fdf7f2 | 856 | ceph_assert(session->is_opening()); |
7c673cae FG |
857 | mds->sessionmap.set_state(session, Session::STATE_OPEN); |
858 | mds->sessionmap.touch_session(session); | |
f67539c2 | 859 | metrics_handler->add_session(session); |
11fdf7f2 | 860 | ceph_assert(session->get_connection()); |
9f95a23c | 861 | auto reply = make_message<MClientSession>(CEPH_SESSION_OPEN); |
33c7a0ef | 862 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) { |
11fdf7f2 | 863 | reply->supported_features = supported_features; |
33c7a0ef TL |
864 | reply->metric_spec = supported_metric_spec; |
865 | } | |
11fdf7f2 TL |
866 | mds->send_message_client(reply, session); |
867 | if (mdcache->is_readonly()) { | |
9f95a23c | 868 | auto m = make_message<MClientSession>(CEPH_SESSION_FORCE_RO); |
11fdf7f2 TL |
869 | mds->send_message_client(m, session); |
870 | } | |
7c673cae FG |
871 | } else if (session->is_closing() || |
872 | session->is_killing()) { | |
873 | // kill any lingering capabilities, leases, requests | |
f91f0fd5 | 874 | bool killing = session->is_killing(); |
7c673cae FG |
875 | while (!session->caps.empty()) { |
876 | Capability *cap = session->caps.front(); | |
877 | CInode *in = cap->get_inode(); | |
878 | dout(20) << " killing capability " << ccap_string(cap->issued()) << " on " << *in << dendl; | |
f91f0fd5 | 879 | mds->locker->remove_client_cap(in, cap, killing); |
7c673cae FG |
880 | } |
881 | while (!session->leases.empty()) { | |
882 | ClientLease *r = session->leases.front(); | |
883 | CDentry *dn = static_cast<CDentry*>(r->parent); | |
884 | dout(20) << " killing client lease of " << *dn << dendl; | |
885 | dn->remove_client_lease(r, mds->locker); | |
886 | } | |
11fdf7f2 | 887 | if (client_reconnect_gather.erase(session->info.get_client())) { |
7c673cae | 888 | dout(20) << " removing client from reconnect set" << dendl; |
7c673cae FG |
889 | if (client_reconnect_gather.empty()) { |
890 | dout(7) << " client " << session->info.inst << " was last reconnect, finishing" << dendl; | |
891 | reconnect_gather_finish(); | |
892 | } | |
893 | } | |
11fdf7f2 TL |
894 | if (client_reclaim_gather.erase(session->info.get_client())) { |
895 | dout(20) << " removing client from reclaim set" << dendl; | |
896 | if (client_reclaim_gather.empty()) { | |
897 | dout(7) << " client " << session->info.inst << " was last reclaimed, finishing" << dendl; | |
898 | mds->maybe_clientreplay_done(); | |
899 | } | |
900 | } | |
7c673cae FG |
901 | |
902 | if (session->is_closing()) { | |
903 | // mark con disposable. if there is a fault, we will get a | |
904 | // reset and clean it up. if the client hasn't received the | |
905 | // CLOSE message yet, they will reconnect and get an | |
906 | // ms_handle_remote_reset() and realize they had in fact closed. | |
907 | // do this *before* sending the message to avoid a possible | |
908 | // race. | |
11fdf7f2 | 909 | if (session->get_connection()) { |
7c673cae FG |
910 | // Conditional because terminate_sessions will indiscrimately |
911 | // put sessions in CLOSING whether they ever had a conn or not. | |
11fdf7f2 | 912 | session->get_connection()->mark_disposable(); |
7c673cae FG |
913 | } |
914 | ||
915 | // reset session | |
9f95a23c | 916 | mds->send_message_client(make_message<MClientSession>(CEPH_SESSION_CLOSE), session); |
7c673cae FG |
917 | mds->sessionmap.set_state(session, Session::STATE_CLOSED); |
918 | session->clear(); | |
f67539c2 | 919 | metrics_handler->remove_session(session); |
7c673cae FG |
920 | mds->sessionmap.remove_session(session); |
921 | } else if (session->is_killing()) { | |
922 | // destroy session, close connection | |
11fdf7f2 | 923 | if (session->get_connection()) { |
92f5a8d4 TL |
924 | session->get_connection()->mark_down(); |
925 | mds->sessionmap.set_state(session, Session::STATE_CLOSED); | |
926 | session->set_connection(nullptr); | |
7c673cae | 927 | } |
f67539c2 | 928 | metrics_handler->remove_session(session); |
7c673cae FG |
929 | mds->sessionmap.remove_session(session); |
930 | } else { | |
931 | ceph_abort(); | |
932 | } | |
933 | } else { | |
934 | ceph_abort(); | |
935 | } | |
936 | } | |
937 | ||
938 | /** | |
939 | * Inject sessions from some source other than actual connections. | |
940 | * | |
941 | * For example: | |
942 | * - sessions inferred from journal replay | |
943 | * - sessions learned from other MDSs during rejoin | |
944 | * - sessions learned from other MDSs during dir/caps migration | |
945 | * - sessions learned from other MDSs during a cross-MDS rename | |
946 | */ | |
947 | version_t Server::prepare_force_open_sessions(map<client_t,entity_inst_t>& cm, | |
11fdf7f2 | 948 | map<client_t,client_metadata_t>& cmm, |
28e407b8 | 949 | map<client_t, pair<Session*,uint64_t> >& smap) |
7c673cae FG |
950 | { |
951 | version_t pv = mds->sessionmap.get_projected(); | |
952 | ||
953 | dout(10) << "prepare_force_open_sessions " << pv | |
954 | << " on " << cm.size() << " clients" | |
955 | << dendl; | |
7c673cae | 956 | |
28e407b8 | 957 | mds->objecter->with_osdmap( |
11fdf7f2 | 958 | [this, &cm, &cmm](const OSDMap &osd_map) { |
28e407b8 | 959 | for (auto p = cm.begin(); p != cm.end(); ) { |
f67539c2 TL |
960 | if (osd_map.is_blocklisted(p->second.addr)) { |
961 | dout(10) << " ignoring blocklisted client." << p->first | |
28e407b8 | 962 | << " (" << p->second.addr << ")" << dendl; |
11fdf7f2 | 963 | cmm.erase(p->first); |
28e407b8 AA |
964 | cm.erase(p++); |
965 | } else { | |
966 | ++p; | |
967 | } | |
968 | } | |
969 | }); | |
970 | ||
971 | for (map<client_t,entity_inst_t>::iterator p = cm.begin(); p != cm.end(); ++p) { | |
7c673cae FG |
972 | Session *session = mds->sessionmap.get_or_add_session(p->second); |
973 | pv = mds->sessionmap.mark_projected(session); | |
28e407b8 | 974 | uint64_t sseq; |
7c673cae FG |
975 | if (session->is_closed() || |
976 | session->is_closing() || | |
28e407b8 AA |
977 | session->is_killing()) { |
978 | sseq = mds->sessionmap.set_state(session, Session::STATE_OPENING); | |
11fdf7f2 TL |
979 | auto q = cmm.find(p->first); |
980 | if (q != cmm.end()) | |
981 | session->info.client_metadata.merge(q->second); | |
28e407b8 | 982 | } else { |
11fdf7f2 | 983 | ceph_assert(session->is_open() || |
7c673cae FG |
984 | session->is_opening() || |
985 | session->is_stale()); | |
28e407b8 AA |
986 | sseq = 0; |
987 | } | |
988 | smap[p->first] = make_pair(session, sseq); | |
7c673cae FG |
989 | session->inc_importing(); |
990 | } | |
991 | return pv; | |
992 | } | |
993 | ||
28e407b8 | 994 | void Server::finish_force_open_sessions(const map<client_t,pair<Session*,uint64_t> >& smap, |
7c673cae FG |
995 | bool dec_import) |
996 | { | |
997 | /* | |
998 | * FIXME: need to carefully consider the race conditions between a | |
999 | * client trying to close a session and an MDS doing an import | |
1000 | * trying to force open a session... | |
1001 | */ | |
28e407b8 | 1002 | dout(10) << "finish_force_open_sessions on " << smap.size() << " clients," |
7c673cae | 1003 | << " initial v " << mds->sessionmap.get_version() << dendl; |
7c673cae | 1004 | |
28e407b8 AA |
1005 | for (auto &it : smap) { |
1006 | Session *session = it.second.first; | |
1007 | uint64_t sseq = it.second.second; | |
1008 | if (sseq > 0) { | |
7c673cae FG |
1009 | if (session->get_state_seq() != sseq) { |
1010 | dout(10) << "force_open_sessions skipping changed " << session->info.inst << dendl; | |
1011 | } else { | |
1012 | dout(10) << "force_open_sessions opened " << session->info.inst << dendl; | |
1013 | mds->sessionmap.set_state(session, Session::STATE_OPEN); | |
1014 | mds->sessionmap.touch_session(session); | |
f67539c2 | 1015 | metrics_handler->add_session(session); |
11fdf7f2 | 1016 | |
9f95a23c | 1017 | auto reply = make_message<MClientSession>(CEPH_SESSION_OPEN); |
33c7a0ef | 1018 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) { |
11fdf7f2 | 1019 | reply->supported_features = supported_features; |
33c7a0ef TL |
1020 | reply->metric_spec = supported_metric_spec; |
1021 | } | |
11fdf7f2 TL |
1022 | mds->send_message_client(reply, session); |
1023 | ||
7c673cae | 1024 | if (mdcache->is_readonly()) |
9f95a23c | 1025 | mds->send_message_client(make_message<MClientSession>(CEPH_SESSION_FORCE_RO), session); |
7c673cae FG |
1026 | } |
1027 | } else { | |
1028 | dout(10) << "force_open_sessions skipping already-open " << session->info.inst << dendl; | |
11fdf7f2 | 1029 | ceph_assert(session->is_open() || session->is_stale()); |
7c673cae FG |
1030 | } |
1031 | ||
1032 | if (dec_import) { | |
1033 | session->dec_importing(); | |
1034 | } | |
1035 | ||
1036 | mds->sessionmap.mark_dirty(session); | |
1037 | } | |
1038 | ||
1039 | dout(10) << __func__ << ": final v " << mds->sessionmap.get_version() << dendl; | |
1040 | } | |
1041 | ||
1042 | class C_MDS_TerminatedSessions : public ServerContext { | |
1043 | void finish(int r) override { | |
1044 | server->terminating_sessions = false; | |
1045 | } | |
1046 | public: | |
1047 | explicit C_MDS_TerminatedSessions(Server *s) : ServerContext(s) {} | |
1048 | }; | |
1049 | ||
1050 | void Server::terminate_sessions() | |
1051 | { | |
a8e16298 | 1052 | dout(5) << "terminating all sessions..." << dendl; |
7c673cae FG |
1053 | |
1054 | terminating_sessions = true; | |
1055 | ||
1056 | // kill them off. clients will retry etc. | |
1057 | set<Session*> sessions; | |
1058 | mds->sessionmap.get_client_session_set(sessions); | |
1059 | for (set<Session*>::const_iterator p = sessions.begin(); | |
1060 | p != sessions.end(); | |
1061 | ++p) { | |
1062 | Session *session = *p; | |
1063 | if (session->is_closing() || | |
1064 | session->is_killing() || | |
1065 | session->is_closed()) | |
1066 | continue; | |
1067 | journal_close_session(session, Session::STATE_CLOSING, NULL); | |
1068 | } | |
1069 | ||
1070 | mdlog->wait_for_safe(new C_MDS_TerminatedSessions(this)); | |
1071 | } | |
1072 | ||
1073 | ||
1074 | void Server::find_idle_sessions() | |
1075 | { | |
91327a77 AA |
1076 | auto now = clock::now(); |
1077 | auto last_cleared_laggy = mds->last_cleared_laggy(); | |
1078 | ||
1079 | dout(10) << "find_idle_sessions. last cleared laggy state " << last_cleared_laggy << "s ago" << dendl; | |
7c673cae FG |
1080 | |
1081 | // timeout/stale | |
1082 | // (caps go stale, lease die) | |
91327a77 AA |
1083 | double queue_max_age = mds->get_dispatch_queue_max_age(ceph_clock_now()); |
1084 | double cutoff = queue_max_age + mds->mdsmap->get_session_timeout(); | |
f64942e4 | 1085 | |
494da23a TL |
1086 | // don't kick clients if we've been laggy |
1087 | if (last_cleared_laggy < cutoff) { | |
1088 | dout(10) << " last cleared laggy " << last_cleared_laggy << "s ago (< cutoff " << cutoff | |
1089 | << "), not marking any client stale" << dendl; | |
1090 | return; | |
1091 | } | |
1092 | ||
11fdf7f2 TL |
1093 | std::vector<Session*> to_evict; |
1094 | ||
494da23a | 1095 | bool defer_session_stale = g_conf().get_val<bool>("mds_defer_session_stale"); |
f64942e4 AA |
1096 | const auto sessions_p1 = mds->sessionmap.by_state.find(Session::STATE_OPEN); |
1097 | if (sessions_p1 != mds->sessionmap.by_state.end() && !sessions_p1->second->empty()) { | |
1098 | std::vector<Session*> new_stale; | |
1099 | ||
1100 | for (auto session : *(sessions_p1->second)) { | |
1101 | auto last_cap_renew_span = std::chrono::duration<double>(now - session->last_cap_renew).count(); | |
1102 | if (last_cap_renew_span < cutoff) { | |
1103 | dout(20) << "laggiest active session is " << session->info.inst | |
1104 | << " and renewed caps recently (" << last_cap_renew_span << "s ago)" << dendl; | |
1105 | break; | |
1106 | } | |
1107 | ||
1108 | if (session->last_seen > session->last_cap_renew) { | |
1109 | last_cap_renew_span = std::chrono::duration<double>(now - session->last_seen).count(); | |
1110 | if (last_cap_renew_span < cutoff) { | |
1111 | dout(20) << "laggiest active session is " << session->info.inst | |
1112 | << " and renewed caps recently (" << last_cap_renew_span << "s ago)" << dendl; | |
1113 | continue; | |
1114 | } | |
1115 | } | |
1116 | ||
494da23a TL |
1117 | if (last_cap_renew_span >= mds->mdsmap->get_session_autoclose()) { |
1118 | dout(20) << "evicting session " << session->info.inst << " since autoclose " | |
1119 | "has arrived" << dendl; | |
1120 | // evict session without marking it stale | |
1121 | to_evict.push_back(session); | |
1122 | continue; | |
1123 | } | |
1124 | ||
1125 | if (defer_session_stale && | |
1126 | !session->is_any_flush_waiter() && | |
1127 | !mds->locker->is_revoking_any_caps_from(session->get_client())) { | |
1128 | dout(20) << "deferring marking session " << session->info.inst << " stale " | |
1129 | "since it holds no caps" << dendl; | |
1130 | continue; | |
1131 | } | |
1132 | ||
11fdf7f2 TL |
1133 | auto it = session->info.client_metadata.find("timeout"); |
1134 | if (it != session->info.client_metadata.end()) { | |
1135 | unsigned timeout = strtoul(it->second.c_str(), nullptr, 0); | |
1136 | if (timeout == 0) { | |
1137 | dout(10) << "skipping session " << session->info.inst | |
1138 | << ", infinite timeout specified" << dendl; | |
1139 | continue; | |
1140 | } | |
1141 | double cutoff = queue_max_age + timeout; | |
1142 | if (last_cap_renew_span < cutoff) { | |
1143 | dout(10) << "skipping session " << session->info.inst | |
1144 | << ", timeout (" << timeout << ") specified" | |
1145 | << " and renewed caps recently (" << last_cap_renew_span << "s ago)" << dendl; | |
1146 | continue; | |
1147 | } | |
1148 | ||
1149 | // do not go through stale, evict it directly. | |
1150 | to_evict.push_back(session); | |
1151 | } else { | |
1152 | dout(10) << "new stale session " << session->info.inst | |
1153 | << " last renewed caps " << last_cap_renew_span << "s ago" << dendl; | |
1154 | new_stale.push_back(session); | |
1155 | } | |
7c673cae FG |
1156 | } |
1157 | ||
f64942e4 AA |
1158 | for (auto session : new_stale) { |
1159 | mds->sessionmap.set_state(session, Session::STATE_STALE); | |
494da23a TL |
1160 | if (mds->locker->revoke_stale_caps(session)) { |
1161 | mds->locker->remove_stale_leases(session); | |
1162 | finish_flush_session(session, session->get_push_seq()); | |
9f95a23c | 1163 | auto m = make_message<MClientSession>(CEPH_SESSION_STALE, session->get_push_seq()); |
494da23a TL |
1164 | mds->send_message_client(m, session); |
1165 | } else { | |
1166 | to_evict.push_back(session); | |
1167 | } | |
f64942e4 | 1168 | } |
7c673cae FG |
1169 | } |
1170 | ||
1171 | // autoclose | |
91327a77 | 1172 | cutoff = queue_max_age + mds->mdsmap->get_session_autoclose(); |
7c673cae | 1173 | |
31f18b77 | 1174 | // Collect a list of sessions exceeding the autoclose threshold |
f64942e4 | 1175 | const auto sessions_p2 = mds->sessionmap.by_state.find(Session::STATE_STALE); |
11fdf7f2 TL |
1176 | if (sessions_p2 != mds->sessionmap.by_state.end() && !sessions_p2->second->empty()) { |
1177 | for (auto session : *(sessions_p2->second)) { | |
20effc67 | 1178 | ceph_assert(session->is_stale()); |
11fdf7f2 TL |
1179 | auto last_cap_renew_span = std::chrono::duration<double>(now - session->last_cap_renew).count(); |
1180 | if (last_cap_renew_span < cutoff) { | |
1181 | dout(20) << "oldest stale session is " << session->info.inst | |
1182 | << " and recently renewed caps " << last_cap_renew_span << "s ago" << dendl; | |
1183 | break; | |
1184 | } | |
1185 | to_evict.push_back(session); | |
1186 | } | |
31f18b77 | 1187 | } |
31f18b77 | 1188 | |
11fdf7f2 | 1189 | for (auto session: to_evict) { |
7c673cae | 1190 | if (session->is_importing()) { |
11fdf7f2 TL |
1191 | dout(10) << "skipping session " << session->info.inst << ", it's being imported" << dendl; |
1192 | continue; | |
7c673cae | 1193 | } |
31f18b77 | 1194 | |
11fdf7f2 TL |
1195 | auto last_cap_renew_span = std::chrono::duration<double>(now - session->last_cap_renew).count(); |
1196 | mds->clog->warn() << "evicting unresponsive client " << *session | |
1197 | << ", after " << last_cap_renew_span << " seconds"; | |
1198 | dout(10) << "autoclosing stale session " << session->info.inst | |
1199 | << " last renewed caps " << last_cap_renew_span << "s ago" << dendl; | |
31f18b77 | 1200 | |
f67539c2 TL |
1201 | if (g_conf()->mds_session_blocklist_on_timeout) { |
1202 | CachedStackStringStream css; | |
1203 | mds->evict_client(session->get_client().v, false, true, *css, nullptr); | |
31f18b77 FG |
1204 | } else { |
1205 | kill_session(session, NULL); | |
1206 | } | |
7c673cae FG |
1207 | } |
1208 | } | |
1209 | ||
91327a77 AA |
1210 | void Server::evict_cap_revoke_non_responders() { |
1211 | if (!cap_revoke_eviction_timeout) { | |
1212 | return; | |
1213 | } | |
1214 | ||
9f95a23c | 1215 | auto&& to_evict = mds->locker->get_late_revoking_clients(cap_revoke_eviction_timeout); |
91327a77 AA |
1216 | |
1217 | for (auto const &client: to_evict) { | |
1218 | mds->clog->warn() << "client id " << client << " has not responded to" | |
1219 | << " cap revoke by MDS for over " << cap_revoke_eviction_timeout | |
1220 | << " seconds, evicting"; | |
1221 | dout(1) << __func__ << ": evicting cap revoke non-responder client id " | |
1222 | << client << dendl; | |
1223 | ||
f67539c2 | 1224 | CachedStackStringStream css; |
91327a77 | 1225 | bool evicted = mds->evict_client(client.v, false, |
f67539c2 TL |
1226 | g_conf()->mds_session_blocklist_on_evict, |
1227 | *css, nullptr); | |
91327a77 AA |
1228 | if (evicted && logger) { |
1229 | logger->inc(l_mdss_cap_revoke_eviction); | |
1230 | } | |
1231 | } | |
1232 | } | |
1233 | ||
92f5a8d4 | 1234 | void Server::handle_conf_change(const std::set<std::string>& changed) { |
f91f0fd5 TL |
1235 | if (changed.count("mds_forward_all_requests_to_auth")){ |
1236 | forward_all_requests_to_auth = g_conf().get_val<bool>("mds_forward_all_requests_to_auth"); | |
92f5a8d4 | 1237 | } |
91327a77 | 1238 | if (changed.count("mds_cap_revoke_eviction_timeout")) { |
11fdf7f2 | 1239 | cap_revoke_eviction_timeout = g_conf().get_val<double>("mds_cap_revoke_eviction_timeout"); |
91327a77 AA |
1240 | dout(20) << __func__ << " cap revoke eviction timeout changed to " |
1241 | << cap_revoke_eviction_timeout << dendl; | |
1242 | } | |
a8e16298 | 1243 | if (changed.count("mds_recall_max_decay_rate")) { |
11fdf7f2 | 1244 | recall_throttle = DecayCounter(g_conf().get_val<double>("mds_recall_max_decay_rate")); |
a8e16298 | 1245 | } |
9f95a23c TL |
1246 | if (changed.count("mds_max_snaps_per_dir")) { |
1247 | max_snaps_per_dir = g_conf().get_val<uint64_t>("mds_max_snaps_per_dir"); | |
1248 | dout(20) << __func__ << " max snapshots per directory changed to " | |
1249 | << max_snaps_per_dir << dendl; | |
1250 | } | |
1251 | if (changed.count("mds_client_delegate_inos_pct")) { | |
1252 | delegate_inos_pct = g_conf().get_val<uint64_t>("mds_client_delegate_inos_pct"); | |
1253 | } | |
adb31ebb TL |
1254 | if (changed.count("mds_max_caps_per_client")) { |
1255 | max_caps_per_client = g_conf().get_val<uint64_t>("mds_max_caps_per_client"); | |
1256 | } | |
1257 | if (changed.count("mds_session_cap_acquisition_throttle")) { | |
1258 | cap_acquisition_throttle = g_conf().get_val<uint64_t>("mds_session_cap_acquisition_throttle"); | |
1259 | } | |
1260 | if (changed.count("mds_session_max_caps_throttle_ratio")) { | |
1261 | max_caps_throttle_ratio = g_conf().get_val<double>("mds_session_max_caps_throttle_ratio"); | |
1262 | } | |
1263 | if (changed.count("mds_cap_acquisition_throttle_retry_request_timeout")) { | |
1264 | caps_throttle_retry_request_timeout = g_conf().get_val<double>("mds_cap_acquisition_throttle_retry_request_timeout"); | |
1265 | } | |
f67539c2 TL |
1266 | if (changed.count("mds_alternate_name_max")) { |
1267 | alternate_name_max = g_conf().get_val<Option::size_t>("mds_alternate_name_max"); | |
1268 | } | |
20effc67 TL |
1269 | if (changed.count("mds_dir_max_entries")) { |
1270 | dir_max_entries = g_conf().get_val<uint64_t>("mds_dir_max_entries"); | |
1271 | dout(20) << __func__ << " max entries per directory changed to " | |
1272 | << dir_max_entries << dendl; | |
1273 | } | |
1274 | if (changed.count("mds_bal_fragment_size_max")) { | |
1275 | bal_fragment_size_max = g_conf().get_val<int64_t>("mds_bal_fragment_size_max"); | |
1276 | dout(20) << __func__ << " max fragment size changed to " | |
1277 | << bal_fragment_size_max << dendl; | |
1278 | } | |
91327a77 AA |
1279 | } |
1280 | ||
7c673cae | 1281 | /* |
11fdf7f2 | 1282 | * XXX bump in the interface here, not using an MDSContext here |
7c673cae FG |
1283 | * because all the callers right now happen to use a SaferCond |
1284 | */ | |
f67539c2 | 1285 | void Server::kill_session(Session *session, Context *on_safe) |
7c673cae | 1286 | { |
9f95a23c | 1287 | ceph_assert(ceph_mutex_is_locked_by_me(mds->mds_lock)); |
31f18b77 | 1288 | |
7c673cae FG |
1289 | if ((session->is_opening() || |
1290 | session->is_open() || | |
1291 | session->is_stale()) && | |
1292 | !session->is_importing()) { | |
1293 | dout(10) << "kill_session " << session << dendl; | |
f67539c2 | 1294 | journal_close_session(session, Session::STATE_KILLING, on_safe); |
7c673cae FG |
1295 | } else { |
1296 | dout(10) << "kill_session importing or already closing/killing " << session << dendl; | |
11fdf7f2 TL |
1297 | if (session->is_closing() || |
1298 | session->is_killing()) { | |
1299 | if (on_safe) | |
1300 | mdlog->wait_for_safe(new MDSInternalContextWrapper(mds, on_safe)); | |
1301 | } else { | |
1302 | ceph_assert(session->is_closed() || | |
1303 | session->is_importing()); | |
1304 | if (on_safe) | |
1305 | on_safe->complete(0); | |
7c673cae FG |
1306 | } |
1307 | } | |
1308 | } | |
1309 | ||
33c7a0ef | 1310 | size_t Server::apply_blocklist() |
31f18b77 | 1311 | { |
81eedcae | 1312 | std::vector<Session*> victims; |
11fdf7f2 | 1313 | const auto& sessions = mds->sessionmap.get_sessions(); |
33c7a0ef TL |
1314 | mds->objecter->with_osdmap( |
1315 | [&](const OSDMap& o) { | |
1316 | for (const auto& p : sessions) { | |
1317 | if (!p.first.is_client()) { | |
1318 | // Do not apply OSDMap blocklist to MDS daemons, we find out | |
1319 | // about their death via MDSMap. | |
1320 | continue; | |
1321 | } | |
1322 | if (o.is_blocklisted(p.second->info.inst.addr)) { | |
1323 | victims.push_back(p.second); | |
1324 | } | |
81eedcae | 1325 | } |
33c7a0ef | 1326 | }); |
31f18b77 | 1327 | |
9f95a23c | 1328 | for (const auto& s : victims) { |
31f18b77 FG |
1329 | kill_session(s, nullptr); |
1330 | } | |
1331 | ||
f67539c2 | 1332 | dout(10) << "apply_blocklist: killed " << victims.size() << dendl; |
31f18b77 FG |
1333 | |
1334 | return victims.size(); | |
1335 | } | |
1336 | ||
f67539c2 | 1337 | void Server::journal_close_session(Session *session, int state, Context *on_safe) |
7c673cae | 1338 | { |
9f95a23c | 1339 | dout(10) << __func__ << " : " |
9f95a23c | 1340 | << session->info.inst |
f67539c2 TL |
1341 | << " pending_prealloc_inos " << session->pending_prealloc_inos |
1342 | << " free_prealloc_inos " << session->free_prealloc_inos | |
1343 | << " delegated_inos " << session->delegated_inos << dendl; | |
9f95a23c | 1344 | |
7c673cae FG |
1345 | uint64_t sseq = mds->sessionmap.set_state(session, state); |
1346 | version_t pv = mds->sessionmap.mark_projected(session); | |
1347 | version_t piv = 0; | |
1348 | ||
1349 | // release alloc and pending-alloc inos for this session | |
1350 | // and wipe out session state, in case the session close aborts for some reason | |
f67539c2 TL |
1351 | interval_set<inodeno_t> inos_to_free; |
1352 | inos_to_free.insert(session->pending_prealloc_inos); | |
1353 | inos_to_free.insert(session->free_prealloc_inos); | |
1354 | if (inos_to_free.size()) { | |
1355 | mds->inotable->project_release_ids(inos_to_free); | |
7c673cae FG |
1356 | piv = mds->inotable->get_projected_version(); |
1357 | } else | |
1358 | piv = 0; | |
9f95a23c | 1359 | |
f67539c2 TL |
1360 | auto le = new ESession(session->info.inst, false, pv, inos_to_free, piv, session->delegated_inos); |
1361 | auto fin = new C_MDS_session_finish(this, session, sseq, false, pv, inos_to_free, piv, | |
1362 | session->delegated_inos, mdlog->get_current_segment(), on_safe); | |
1363 | mdlog->start_submit_entry(le, fin); | |
7c673cae FG |
1364 | mdlog->flush(); |
1365 | ||
1366 | // clean up requests, too | |
f67539c2 TL |
1367 | while(!session->requests.empty()) { |
1368 | auto mdr = MDRequestRef(*session->requests.begin()); | |
7c673cae FG |
1369 | mdcache->request_kill(mdr); |
1370 | } | |
1371 | ||
1372 | finish_flush_session(session, session->get_push_seq()); | |
1373 | } | |
1374 | ||
11fdf7f2 | 1375 | void Server::reconnect_clients(MDSContext *reconnect_done_) |
7c673cae FG |
1376 | { |
1377 | reconnect_done = reconnect_done_; | |
28e407b8 | 1378 | |
11fdf7f2 | 1379 | auto now = clock::now(); |
28e407b8 AA |
1380 | set<Session*> sessions; |
1381 | mds->sessionmap.get_client_session_set(sessions); | |
1382 | for (auto session : sessions) { | |
11fdf7f2 TL |
1383 | if (session->is_open()) { |
1384 | client_reconnect_gather.insert(session->get_client()); | |
92f5a8d4 | 1385 | session->set_reconnecting(true); |
11fdf7f2 TL |
1386 | session->last_cap_renew = now; |
1387 | } | |
28e407b8 | 1388 | } |
7c673cae FG |
1389 | |
1390 | if (client_reconnect_gather.empty()) { | |
1391 | dout(7) << "reconnect_clients -- no sessions, doing nothing." << dendl; | |
1392 | reconnect_gather_finish(); | |
1393 | return; | |
1394 | } | |
1395 | ||
1396 | // clients will get the mdsmap and discover we're reconnecting via the monitor. | |
1397 | ||
11fdf7f2 | 1398 | reconnect_start = now; |
7c673cae FG |
1399 | dout(1) << "reconnect_clients -- " << client_reconnect_gather.size() << " sessions" << dendl; |
1400 | mds->sessionmap.dump(); | |
1401 | } | |
1402 | ||
9f95a23c | 1403 | void Server::handle_client_reconnect(const cref_t<MClientReconnect> &m) |
7c673cae | 1404 | { |
11fdf7f2 TL |
1405 | dout(7) << "handle_client_reconnect " << m->get_source() |
1406 | << (m->has_more() ? " (more)" : "") << dendl; | |
7c673cae | 1407 | client_t from = m->get_source().num(); |
94b18763 | 1408 | Session *session = mds->get_session(m); |
92f5a8d4 TL |
1409 | if (!session) { |
1410 | dout(0) << " ignoring sessionless msg " << *m << dendl; | |
9f95a23c | 1411 | auto reply = make_message<MClientSession>(CEPH_SESSION_REJECT); |
92f5a8d4 TL |
1412 | reply->metadata["error_string"] = "sessionless"; |
1413 | mds->send_message(reply, m->get_connection()); | |
81eedcae | 1414 | return; |
92f5a8d4 TL |
1415 | } |
1416 | ||
1417 | if (!session->is_open()) { | |
1418 | dout(0) << " ignoring msg from not-open session" << *m << dendl; | |
9f95a23c | 1419 | auto reply = make_message<MClientSession>(CEPH_SESSION_CLOSE); |
92f5a8d4 TL |
1420 | mds->send_message(reply, m->get_connection()); |
1421 | return; | |
1422 | } | |
7c673cae | 1423 | |
f67539c2 TL |
1424 | bool reconnect_all_deny = g_conf().get_val<bool>("mds_deny_all_reconnect"); |
1425 | ||
7c673cae FG |
1426 | if (!mds->is_reconnect() && mds->get_want_state() == CEPH_MDS_STATE_RECONNECT) { |
1427 | dout(10) << " we're almost in reconnect state (mdsmap delivery race?); waiting" << dendl; | |
1428 | mds->wait_for_reconnect(new C_MDS_RetryMessage(mds, m)); | |
1429 | return; | |
1430 | } | |
1431 | ||
f64942e4 | 1432 | auto delay = std::chrono::duration<double>(clock::now() - reconnect_start).count(); |
7c673cae FG |
1433 | dout(10) << " reconnect_start " << reconnect_start << " delay " << delay << dendl; |
1434 | ||
1435 | bool deny = false; | |
f67539c2 | 1436 | if (reconnect_all_deny || !mds->is_reconnect() || mds->get_want_state() != CEPH_MDS_STATE_RECONNECT || reconnect_evicting) { |
7c673cae | 1437 | // XXX maybe in the future we can do better than this? |
f67539c2 TL |
1438 | if (reconnect_all_deny) { |
1439 | dout(1) << "mds_deny_all_reconnect was set to speed up reboot phase, ignoring reconnect, sending close" << dendl; | |
1440 | } else { | |
1441 | dout(1) << "no longer in reconnect state, ignoring reconnect, sending close" << dendl; | |
1442 | } | |
7c673cae FG |
1443 | mds->clog->info() << "denied reconnect attempt (mds is " |
1444 | << ceph_mds_state_name(mds->get_state()) | |
1445 | << ") from " << m->get_source_inst() | |
11fdf7f2 | 1446 | << " after " << delay << " (allowed interval " << g_conf()->mds_reconnect_timeout << ")"; |
7c673cae | 1447 | deny = true; |
11fdf7f2 TL |
1448 | } else { |
1449 | std::string error_str; | |
1450 | if (!session->is_open()) { | |
1451 | error_str = "session is closed"; | |
1452 | } else if (mdcache->is_readonly()) { | |
1453 | error_str = "mds is readonly"; | |
1454 | } else { | |
1455 | if (session->info.client_metadata.features.empty()) | |
1456 | infer_supported_features(session, session->info.client_metadata); | |
1457 | ||
1458 | feature_bitset_t missing_features = required_client_features; | |
1459 | missing_features -= session->info.client_metadata.features; | |
1460 | if (!missing_features.empty()) { | |
f67539c2 TL |
1461 | CachedStackStringStream css; |
1462 | *css << "missing required features '" << missing_features << "'"; | |
1463 | error_str = css->strv(); | |
11fdf7f2 TL |
1464 | } |
1465 | } | |
1466 | ||
1467 | if (!error_str.empty()) { | |
1468 | deny = true; | |
1469 | dout(1) << " " << error_str << ", ignoring reconnect, sending close" << dendl; | |
1470 | mds->clog->info() << "denied reconnect attempt from " | |
1471 | << m->get_source_inst() << " (" << error_str << ")"; | |
1472 | } | |
7c673cae FG |
1473 | } |
1474 | ||
1475 | if (deny) { | |
9f95a23c | 1476 | auto r = make_message<MClientSession>(CEPH_SESSION_CLOSE); |
11fdf7f2 | 1477 | mds->send_message_client(r, session); |
f67539c2 TL |
1478 | if (session->is_open()) { |
1479 | client_reconnect_denied.insert(session->get_client()); | |
1480 | } | |
7c673cae FG |
1481 | return; |
1482 | } | |
1483 | ||
11fdf7f2 | 1484 | if (!m->has_more()) { |
f67539c2 | 1485 | metrics_handler->add_session(session); |
11fdf7f2 | 1486 | // notify client of success with an OPEN |
9f95a23c | 1487 | auto reply = make_message<MClientSession>(CEPH_SESSION_OPEN); |
33c7a0ef | 1488 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) { |
11fdf7f2 | 1489 | reply->supported_features = supported_features; |
33c7a0ef TL |
1490 | reply->metric_spec = supported_metric_spec; |
1491 | } | |
11fdf7f2 TL |
1492 | mds->send_message_client(reply, session); |
1493 | mds->clog->debug() << "reconnect by " << session->info.inst << " after " << delay; | |
1494 | } | |
1495 | ||
91327a77 | 1496 | session->last_cap_renew = clock::now(); |
7c673cae FG |
1497 | |
1498 | // snaprealms | |
11fdf7f2 TL |
1499 | for (const auto &r : m->realms) { |
1500 | CInode *in = mdcache->get_inode(inodeno_t(r.realm.ino)); | |
7c673cae FG |
1501 | if (in && in->state_test(CInode::STATE_PURGING)) |
1502 | continue; | |
1503 | if (in) { | |
11fdf7f2 TL |
1504 | if (in->snaprealm) { |
1505 | dout(15) << "open snaprealm (w inode) on " << *in << dendl; | |
7c673cae | 1506 | } else { |
11fdf7f2 TL |
1507 | // this can happen if we are non-auth or we rollback snaprealm |
1508 | dout(15) << "open snaprealm (null snaprealm) on " << *in << dendl; | |
7c673cae | 1509 | } |
11fdf7f2 | 1510 | mdcache->add_reconnected_snaprealm(from, inodeno_t(r.realm.ino), snapid_t(r.realm.seq)); |
7c673cae | 1511 | } else { |
11fdf7f2 TL |
1512 | dout(15) << "open snaprealm (w/o inode) on " << inodeno_t(r.realm.ino) |
1513 | << " seq " << r.realm.seq << dendl; | |
1514 | mdcache->add_reconnected_snaprealm(from, inodeno_t(r.realm.ino), snapid_t(r.realm.seq)); | |
7c673cae FG |
1515 | } |
1516 | } | |
1517 | ||
1518 | // caps | |
11fdf7f2 | 1519 | for (const auto &p : m->caps) { |
7c673cae | 1520 | // make sure our last_cap_id is MAX over all issued caps |
11fdf7f2 TL |
1521 | if (p.second.capinfo.cap_id > mdcache->last_cap_id) |
1522 | mdcache->last_cap_id = p.second.capinfo.cap_id; | |
7c673cae | 1523 | |
11fdf7f2 | 1524 | CInode *in = mdcache->get_inode(p.first); |
7c673cae FG |
1525 | if (in && in->state_test(CInode::STATE_PURGING)) |
1526 | continue; | |
1527 | if (in && in->is_auth()) { | |
1528 | // we recovered it, and it's ours. take note. | |
11fdf7f2 | 1529 | dout(15) << "open cap realm " << inodeno_t(p.second.capinfo.snaprealm) |
7c673cae | 1530 | << " on " << *in << dendl; |
11fdf7f2 TL |
1531 | in->reconnect_cap(from, p.second, session); |
1532 | mdcache->add_reconnected_cap(from, p.first, p.second); | |
1533 | recover_filelocks(in, p.second.flockbl, m->get_orig_source().num()); | |
7c673cae FG |
1534 | continue; |
1535 | } | |
1536 | ||
1537 | if (in && !in->is_auth()) { | |
1538 | // not mine. | |
1539 | dout(10) << "non-auth " << *in << ", will pass off to authority" << dendl; | |
1540 | // add to cap export list. | |
11fdf7f2 TL |
1541 | mdcache->rejoin_export_caps(p.first, from, p.second, |
1542 | in->authority().first, true); | |
7c673cae FG |
1543 | } else { |
1544 | // don't know if the inode is mine | |
11fdf7f2 TL |
1545 | dout(10) << "missing ino " << p.first << ", will load later" << dendl; |
1546 | mdcache->rejoin_recovered_caps(p.first, from, p.second, MDS_RANK_NONE); | |
7c673cae FG |
1547 | } |
1548 | } | |
1549 | ||
f64942e4 AA |
1550 | reconnect_last_seen = clock::now(); |
1551 | ||
11fdf7f2 TL |
1552 | if (!m->has_more()) { |
1553 | mdcache->rejoin_recovered_client(session->get_client(), session->info.inst); | |
1554 | ||
1555 | // remove from gather set | |
1556 | client_reconnect_gather.erase(from); | |
92f5a8d4 | 1557 | session->set_reconnecting(false); |
11fdf7f2 TL |
1558 | if (client_reconnect_gather.empty()) |
1559 | reconnect_gather_finish(); | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | void Server::infer_supported_features(Session *session, client_metadata_t& client_metadata) | |
1564 | { | |
1565 | int supported = -1; | |
1566 | auto it = client_metadata.find("ceph_version"); | |
1567 | if (it != client_metadata.end()) { | |
1568 | // user space client | |
1569 | if (it->second.compare(0, 16, "ceph version 12.") == 0) | |
1570 | supported = CEPHFS_FEATURE_LUMINOUS; | |
1571 | else if (session->get_connection()->has_feature(CEPH_FEATURE_FS_CHANGE_ATTR)) | |
1572 | supported = CEPHFS_FEATURE_KRAKEN; | |
1573 | } else { | |
1574 | it = client_metadata.find("kernel_version"); | |
1575 | if (it != client_metadata.end()) { | |
1576 | // kernel client | |
1577 | if (session->get_connection()->has_feature(CEPH_FEATURE_NEW_OSDOP_ENCODING)) | |
1578 | supported = CEPHFS_FEATURE_LUMINOUS; | |
1579 | } | |
1580 | } | |
1581 | if (supported == -1 && | |
1582 | session->get_connection()->has_feature(CEPH_FEATURE_FS_FILE_LAYOUT_V2)) | |
1583 | supported = CEPHFS_FEATURE_JEWEL; | |
7c673cae | 1584 | |
11fdf7f2 TL |
1585 | if (supported >= 0) { |
1586 | unsigned long value = (1UL << (supported + 1)) - 1; | |
1587 | client_metadata.features = feature_bitset_t(value); | |
1588 | dout(10) << __func__ << " got '" << client_metadata.features << "'" << dendl; | |
1589 | } | |
7c673cae FG |
1590 | } |
1591 | ||
11fdf7f2 TL |
1592 | void Server::update_required_client_features() |
1593 | { | |
f67539c2 | 1594 | required_client_features = mds->mdsmap->get_required_client_features(); |
11fdf7f2 TL |
1595 | dout(7) << "required_client_features: " << required_client_features << dendl; |
1596 | ||
1597 | if (mds->get_state() >= MDSMap::STATE_RECONNECT) { | |
1598 | set<Session*> sessions; | |
1599 | mds->sessionmap.get_client_session_set(sessions); | |
1600 | for (auto session : sessions) { | |
1601 | feature_bitset_t missing_features = required_client_features; | |
1602 | missing_features -= session->info.client_metadata.features; | |
1603 | if (!missing_features.empty()) { | |
f67539c2 | 1604 | bool blocklisted = mds->objecter->with_osdmap( |
11fdf7f2 | 1605 | [session](const OSDMap &osd_map) -> bool { |
f67539c2 | 1606 | return osd_map.is_blocklisted(session->info.inst.addr); |
11fdf7f2 | 1607 | }); |
f67539c2 | 1608 | if (blocklisted) |
11fdf7f2 | 1609 | continue; |
7c673cae | 1610 | |
11fdf7f2 TL |
1611 | mds->clog->warn() << "evicting session " << *session << ", missing required features '" |
1612 | << missing_features << "'"; | |
f67539c2 | 1613 | CachedStackStringStream css; |
11fdf7f2 | 1614 | mds->evict_client(session->get_client().v, false, |
f67539c2 | 1615 | g_conf()->mds_session_blocklist_on_evict, *css); |
11fdf7f2 TL |
1616 | } |
1617 | } | |
1618 | } | |
1619 | } | |
7c673cae FG |
1620 | |
1621 | void Server::reconnect_gather_finish() | |
1622 | { | |
1623 | dout(7) << "reconnect_gather_finish. failed on " << failed_reconnects << " clients" << dendl; | |
11fdf7f2 TL |
1624 | ceph_assert(reconnect_done); |
1625 | ||
1626 | if (!mds->snapclient->is_synced()) { | |
1627 | // make sure snaptable cache is populated. snaprealms will be | |
1628 | // extensively used in rejoin stage. | |
1629 | dout(7) << " snaptable cache isn't synced, delaying state transition" << dendl; | |
1630 | mds->snapclient->wait_for_sync(reconnect_done); | |
1631 | } else { | |
1632 | reconnect_done->complete(0); | |
1633 | } | |
7c673cae FG |
1634 | reconnect_done = NULL; |
1635 | } | |
1636 | ||
1637 | void Server::reconnect_tick() | |
1638 | { | |
f67539c2 | 1639 | bool reject_all_reconnect = false; |
31f18b77 | 1640 | if (reconnect_evicting) { |
f64942e4 | 1641 | dout(7) << "reconnect_tick: waiting for evictions" << dendl; |
31f18b77 FG |
1642 | return; |
1643 | } | |
1644 | ||
f67539c2 TL |
1645 | /* |
1646 | * Set mds_deny_all_reconnect to reject all the reconnect req , | |
1647 | * then load less meta information in rejoin phase. This will shorten reboot time. | |
1648 | * Moreover, loading less meta increases the chance standby with less memory can failover. | |
1649 | ||
1650 | * Why not shorten reconnect period? | |
1651 | * Clients may send unsafe or retry requests, which haven't been | |
1652 | * completed before old mds stop, to new mds. These requests may | |
1653 | * need to be processed during new mds's clientreplay phase, | |
1654 | * see: #https://github.com/ceph/ceph/pull/29059. | |
1655 | */ | |
1656 | bool reconnect_all_deny = g_conf().get_val<bool>("mds_deny_all_reconnect"); | |
f64942e4 AA |
1657 | if (client_reconnect_gather.empty()) |
1658 | return; | |
31f18b77 | 1659 | |
f67539c2 TL |
1660 | if (reconnect_all_deny && (client_reconnect_gather == client_reconnect_denied)) |
1661 | reject_all_reconnect = true; | |
1662 | ||
f64942e4 AA |
1663 | auto now = clock::now(); |
1664 | auto elapse1 = std::chrono::duration<double>(now - reconnect_start).count(); | |
f67539c2 | 1665 | if (elapse1 < g_conf()->mds_reconnect_timeout && !reject_all_reconnect) |
f64942e4 | 1666 | return; |
31f18b77 | 1667 | |
f64942e4 AA |
1668 | vector<Session*> remaining_sessions; |
1669 | remaining_sessions.reserve(client_reconnect_gather.size()); | |
1670 | for (auto c : client_reconnect_gather) { | |
1671 | Session *session = mds->sessionmap.get_session(entity_name_t::CLIENT(c.v)); | |
1672 | ceph_assert(session); | |
1673 | remaining_sessions.push_back(session); | |
1674 | // client re-sends cap flush messages before the reconnect message | |
1675 | if (session->last_seen > reconnect_last_seen) | |
1676 | reconnect_last_seen = session->last_seen; | |
1677 | } | |
31f18b77 | 1678 | |
f64942e4 | 1679 | auto elapse2 = std::chrono::duration<double>(now - reconnect_last_seen).count(); |
f67539c2 | 1680 | if (elapse2 < g_conf()->mds_reconnect_timeout / 2 && !reject_all_reconnect) { |
f64942e4 AA |
1681 | dout(7) << "reconnect_tick: last seen " << elapse2 |
1682 | << " seconds ago, extending reconnect interval" << dendl; | |
1683 | return; | |
1684 | } | |
1685 | ||
1686 | dout(7) << "reconnect timed out, " << remaining_sessions.size() | |
f67539c2 | 1687 | << " clients have not reconnected in time" << dendl; |
f64942e4 | 1688 | |
f67539c2 | 1689 | // If we're doing blocklist evictions, use this to wait for them before |
f64942e4 AA |
1690 | // proceeding to reconnect_gather_finish |
1691 | MDSGatherBuilder gather(g_ceph_context); | |
1692 | ||
1693 | for (auto session : remaining_sessions) { | |
11fdf7f2 TL |
1694 | // Keep sessions that have specified timeout. These sessions will prevent |
1695 | // mds from going to active. MDS goes to active after they all have been | |
1696 | // killed or reclaimed. | |
1697 | if (session->info.client_metadata.find("timeout") != | |
1698 | session->info.client_metadata.end()) { | |
1699 | dout(1) << "reconnect keeps " << session->info.inst | |
1700 | << ", need to be reclaimed" << dendl; | |
1701 | client_reclaim_gather.insert(session->get_client()); | |
1702 | continue; | |
1703 | } | |
1704 | ||
f64942e4 | 1705 | dout(1) << "reconnect gives up on " << session->info.inst << dendl; |
31f18b77 | 1706 | |
f64942e4 AA |
1707 | mds->clog->warn() << "evicting unresponsive client " << *session |
1708 | << ", after waiting " << elapse1 | |
1709 | << " seconds during MDS startup"; | |
1710 | ||
f67539c2 TL |
1711 | // make _session_logged() purge orphan objects of lost async/unsafe requests |
1712 | session->delegated_inos.swap(session->free_prealloc_inos); | |
1713 | ||
1714 | if (g_conf()->mds_session_blocklist_on_timeout) { | |
1715 | CachedStackStringStream css; | |
1716 | mds->evict_client(session->get_client().v, false, true, *css, | |
f64942e4 | 1717 | gather.new_sub()); |
31f18b77 | 1718 | } else { |
f67539c2 | 1719 | kill_session(session, NULL); |
31f18b77 | 1720 | } |
f64942e4 AA |
1721 | |
1722 | failed_reconnects++; | |
1723 | } | |
1724 | client_reconnect_gather.clear(); | |
f67539c2 | 1725 | client_reconnect_denied.clear(); |
f64942e4 AA |
1726 | |
1727 | if (gather.has_subs()) { | |
1728 | dout(1) << "reconnect will complete once clients are evicted" << dendl; | |
9f95a23c | 1729 | gather.set_finisher(new MDSInternalContextWrapper(mds, new LambdaContext( |
f64942e4 AA |
1730 | [this](int r){reconnect_gather_finish();}))); |
1731 | gather.activate(); | |
1732 | reconnect_evicting = true; | |
1733 | } else { | |
1734 | reconnect_gather_finish(); | |
7c673cae FG |
1735 | } |
1736 | } | |
1737 | ||
1738 | void Server::recover_filelocks(CInode *in, bufferlist locks, int64_t client) | |
1739 | { | |
1740 | if (!locks.length()) return; | |
1741 | int numlocks; | |
1742 | ceph_filelock lock; | |
11fdf7f2 TL |
1743 | auto p = locks.cbegin(); |
1744 | decode(numlocks, p); | |
7c673cae | 1745 | for (int i = 0; i < numlocks; ++i) { |
11fdf7f2 | 1746 | decode(lock, p); |
7c673cae FG |
1747 | lock.client = client; |
1748 | in->get_fcntl_lock_state()->held_locks.insert(pair<uint64_t, ceph_filelock>(lock.start, lock)); | |
1749 | ++in->get_fcntl_lock_state()->client_held_lock_counts[client]; | |
1750 | } | |
11fdf7f2 | 1751 | decode(numlocks, p); |
7c673cae | 1752 | for (int i = 0; i < numlocks; ++i) { |
11fdf7f2 | 1753 | decode(lock, p); |
7c673cae FG |
1754 | lock.client = client; |
1755 | in->get_flock_lock_state()->held_locks.insert(pair<uint64_t, ceph_filelock> (lock.start, lock)); | |
1756 | ++in->get_flock_lock_state()->client_held_lock_counts[client]; | |
1757 | } | |
1758 | } | |
1759 | ||
7c673cae FG |
1760 | /** |
1761 | * Call this when the MDCache is oversized, to send requests to the clients | |
1762 | * to trim some caps, and consequently unpin some inodes in the MDCache so | |
1763 | * that it can trim too. | |
1764 | */ | |
a8e16298 TL |
1765 | std::pair<bool, uint64_t> Server::recall_client_state(MDSGatherBuilder* gather, RecallFlags flags) |
1766 | { | |
1767 | const auto now = clock::now(); | |
92f5a8d4 TL |
1768 | const bool steady = !!(flags&RecallFlags::STEADY); |
1769 | const bool enforce_max = !!(flags&RecallFlags::ENFORCE_MAX); | |
1770 | const bool enforce_liveness = !!(flags&RecallFlags::ENFORCE_LIVENESS); | |
1771 | const bool trim = !!(flags&RecallFlags::TRIM); | |
a8e16298 | 1772 | |
11fdf7f2 TL |
1773 | const auto max_caps_per_client = g_conf().get_val<uint64_t>("mds_max_caps_per_client"); |
1774 | const auto min_caps_per_client = g_conf().get_val<uint64_t>("mds_min_caps_per_client"); | |
1775 | const auto recall_global_max_decay_threshold = g_conf().get_val<Option::size_t>("mds_recall_global_max_decay_threshold"); | |
1776 | const auto recall_max_caps = g_conf().get_val<Option::size_t>("mds_recall_max_caps"); | |
1777 | const auto recall_max_decay_threshold = g_conf().get_val<Option::size_t>("mds_recall_max_decay_threshold"); | |
92f5a8d4 | 1778 | const auto cache_liveness_magnitude = g_conf().get_val<Option::size_t>("mds_session_cache_liveness_magnitude"); |
a8e16298 TL |
1779 | |
1780 | dout(7) << __func__ << ":" | |
1781 | << " min=" << min_caps_per_client | |
1782 | << " max=" << max_caps_per_client | |
1783 | << " total=" << Capability::count() | |
92f5a8d4 | 1784 | << " flags=" << flags |
a8e16298 | 1785 | << dendl; |
f64942e4 | 1786 | |
a8e16298 TL |
1787 | /* trim caps of sessions with the most caps first */ |
1788 | std::multimap<uint64_t, Session*> caps_session; | |
92f5a8d4 | 1789 | auto f = [&caps_session, enforce_max, enforce_liveness, trim, max_caps_per_client, cache_liveness_magnitude](auto& s) { |
a8e16298 | 1790 | auto num_caps = s->caps.size(); |
92f5a8d4 TL |
1791 | auto cache_liveness = s->get_session_cache_liveness(); |
1792 | if (trim || (enforce_max && num_caps > max_caps_per_client) || (enforce_liveness && cache_liveness < (num_caps>>cache_liveness_magnitude))) { | |
a8e16298 TL |
1793 | caps_session.emplace(std::piecewise_construct, std::forward_as_tuple(num_caps), std::forward_as_tuple(s)); |
1794 | } | |
1795 | }; | |
1796 | mds->sessionmap.get_client_sessions(std::move(f)); | |
1797 | ||
1798 | std::pair<bool, uint64_t> result = {false, 0}; | |
11fdf7f2 | 1799 | auto& [throttled, caps_recalled] = result; |
a8e16298 | 1800 | last_recall_state = now; |
11fdf7f2 | 1801 | for (const auto& [num_caps, session] : boost::adaptors::reverse(caps_session)) { |
7c673cae | 1802 | if (!session->is_open() || |
11fdf7f2 | 1803 | !session->get_connection() || |
7c673cae FG |
1804 | !session->info.inst.name.is_client()) |
1805 | continue; | |
1806 | ||
a8e16298 TL |
1807 | dout(10) << __func__ << ":" |
1808 | << " session " << session->info.inst | |
1809 | << " caps " << num_caps | |
7c673cae FG |
1810 | << ", leases " << session->leases.size() |
1811 | << dendl; | |
1812 | ||
a8e16298 TL |
1813 | uint64_t newlim; |
1814 | if (num_caps < recall_max_caps || (num_caps-recall_max_caps) < min_caps_per_client) { | |
1815 | newlim = min_caps_per_client; | |
1816 | } else { | |
1817 | newlim = num_caps-recall_max_caps; | |
1818 | } | |
1819 | if (num_caps > newlim) { | |
1820 | /* now limit the number of caps we recall at a time to prevent overloading ourselves */ | |
1821 | uint64_t recall = std::min<uint64_t>(recall_max_caps, num_caps-newlim); | |
1822 | newlim = num_caps-recall; | |
1823 | const uint64_t session_recall_throttle = session->get_recall_caps_throttle(); | |
11fdf7f2 TL |
1824 | const uint64_t session_recall_throttle2o = session->get_recall_caps_throttle2o(); |
1825 | const uint64_t global_recall_throttle = recall_throttle.get(); | |
a8e16298 TL |
1826 | if (session_recall_throttle+recall > recall_max_decay_threshold) { |
1827 | dout(15) << " session recall threshold (" << recall_max_decay_threshold << ") hit at " << session_recall_throttle << "; skipping!" << dendl; | |
1828 | throttled = true; | |
1829 | continue; | |
11fdf7f2 TL |
1830 | } else if (session_recall_throttle2o+recall > recall_max_caps*2) { |
1831 | dout(15) << " session recall 2nd-order threshold (" << 2*recall_max_caps << ") hit at " << session_recall_throttle2o << "; skipping!" << dendl; | |
1832 | throttled = true; | |
1833 | continue; | |
a8e16298 TL |
1834 | } else if (global_recall_throttle+recall > recall_global_max_decay_threshold) { |
1835 | dout(15) << " global recall threshold (" << recall_global_max_decay_threshold << ") hit at " << global_recall_throttle << "; skipping!" << dendl; | |
1836 | throttled = true; | |
1837 | break; | |
1838 | } | |
1839 | ||
1840 | // now check if we've recalled caps recently and the client is unlikely to satisfy a new recall | |
1841 | if (steady) { | |
1842 | const auto session_recall = session->get_recall_caps(); | |
1843 | const auto session_release = session->get_release_caps(); | |
1844 | if (2*session_release < session_recall && 2*session_recall > recall_max_decay_threshold) { | |
1845 | /* The session has been unable to keep up with the number of caps | |
1846 | * recalled (by half); additionally, to prevent marking sessions | |
1847 | * we've just begun to recall from, the session_recall counter | |
1848 | * (decayed count of caps recently recalled) is **greater** than the | |
1849 | * session threshold for the session's cap recall throttle. | |
1850 | */ | |
1851 | dout(15) << " 2*session_release < session_recall" | |
11fdf7f2 TL |
1852 | " (2*" << session_release << " < " << session_recall << ") &&" |
1853 | " 2*session_recall < recall_max_decay_threshold" | |
1854 | " (2*" << session_recall << " > " << recall_max_decay_threshold << ")" | |
a8e16298 TL |
1855 | " Skipping because we are unlikely to get more released." << dendl; |
1856 | continue; | |
1857 | } else if (recall < recall_max_caps && 2*recall < session_recall) { | |
1858 | /* The number of caps recalled is less than the number we *could* | |
1859 | * recall (so there isn't much left to recall?) and the number of | |
1860 | * caps is less than the current recall_caps counter (decayed count | |
1861 | * of caps recently recalled). | |
1862 | */ | |
1863 | dout(15) << " 2*recall < session_recall " | |
1864 | " (2*" << recall << " < " << session_recall << ") &&" | |
1865 | " recall < recall_max_caps (" << recall << " < " << recall_max_caps << ");" | |
1866 | " Skipping because we are unlikely to get more released." << dendl; | |
1867 | continue; | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | dout(7) << " recalling " << recall << " caps; session_recall_throttle = " << session_recall_throttle << "; global_recall_throttle = " << global_recall_throttle << dendl; | |
1872 | ||
9f95a23c | 1873 | auto m = make_message<MClientSession>(CEPH_SESSION_RECALL_STATE); |
3efd9988 FG |
1874 | m->head.max_caps = newlim; |
1875 | mds->send_message_client(m, session); | |
a8e16298 | 1876 | if (gather) { |
f91f0fd5 | 1877 | flush_session(session, *gather); |
f64942e4 | 1878 | } |
a8e16298 | 1879 | caps_recalled += session->notify_recall_sent(newlim); |
11fdf7f2 | 1880 | recall_throttle.hit(recall); |
7c673cae FG |
1881 | } |
1882 | } | |
a8e16298 TL |
1883 | |
1884 | dout(7) << "recalled" << (throttled ? " (throttled)" : "") << " " << caps_recalled << " client caps." << dendl; | |
1885 | ||
1886 | return result; | |
7c673cae FG |
1887 | } |
1888 | ||
1889 | void Server::force_clients_readonly() | |
1890 | { | |
1891 | dout(10) << "force_clients_readonly" << dendl; | |
1892 | set<Session*> sessions; | |
1893 | mds->sessionmap.get_client_session_set(sessions); | |
1894 | for (set<Session*>::const_iterator p = sessions.begin(); | |
1895 | p != sessions.end(); | |
1896 | ++p) { | |
1897 | Session *session = *p; | |
1898 | if (!session->info.inst.name.is_client() || | |
1899 | !(session->is_open() || session->is_stale())) | |
1900 | continue; | |
9f95a23c | 1901 | mds->send_message_client(make_message<MClientSession>(CEPH_SESSION_FORCE_RO), session); |
7c673cae FG |
1902 | } |
1903 | } | |
1904 | ||
1905 | /******* | |
1906 | * some generic stuff for finishing off requests | |
1907 | */ | |
1908 | void Server::journal_and_reply(MDRequestRef& mdr, CInode *in, CDentry *dn, LogEvent *le, MDSLogContextBase *fin) | |
1909 | { | |
1910 | dout(10) << "journal_and_reply tracei " << in << " tracedn " << dn << dendl; | |
11fdf7f2 | 1911 | ceph_assert(!mdr->has_completed); |
7c673cae FG |
1912 | |
1913 | // note trace items for eventual reply. | |
1914 | mdr->tracei = in; | |
1915 | if (in) | |
1916 | mdr->pin(in); | |
1917 | ||
1918 | mdr->tracedn = dn; | |
1919 | if (dn) | |
1920 | mdr->pin(dn); | |
1921 | ||
1922 | early_reply(mdr, in, dn); | |
1923 | ||
1924 | mdr->committing = true; | |
1925 | submit_mdlog_entry(le, fin, mdr, __func__); | |
1926 | ||
1927 | if (mdr->client_request && mdr->client_request->is_queued_for_replay()) { | |
1928 | if (mds->queue_one_replay()) { | |
1929 | dout(10) << " queued next replay op" << dendl; | |
1930 | } else { | |
11fdf7f2 | 1931 | dout(10) << " journaled last replay op" << dendl; |
7c673cae FG |
1932 | } |
1933 | } else if (mdr->did_early_reply) | |
b32b8144 | 1934 | mds->locker->drop_rdlocks_for_early_reply(mdr.get()); |
7c673cae FG |
1935 | else |
1936 | mdlog->flush(); | |
1937 | } | |
1938 | ||
1939 | void Server::submit_mdlog_entry(LogEvent *le, MDSLogContextBase *fin, MDRequestRef& mdr, | |
11fdf7f2 | 1940 | std::string_view event) |
7c673cae FG |
1941 | { |
1942 | if (mdr) { | |
1943 | string event_str("submit entry: "); | |
1944 | event_str += event; | |
11fdf7f2 | 1945 | mdr->mark_event(event_str); |
7c673cae FG |
1946 | } |
1947 | mdlog->submit_entry(le, fin); | |
1948 | } | |
1949 | ||
1950 | /* | |
1951 | * send response built from mdr contents and error code; clean up mdr | |
1952 | */ | |
1953 | void Server::respond_to_request(MDRequestRef& mdr, int r) | |
1954 | { | |
1955 | if (mdr->client_request) { | |
f91f0fd5 TL |
1956 | if (mdr->is_batch_head()) { |
1957 | dout(20) << __func__ << " batch head " << *mdr << dendl; | |
1958 | mdr->release_batch_op()->respond(r); | |
9f95a23c TL |
1959 | } else { |
1960 | reply_client_request(mdr, make_message<MClientReply>(*mdr->client_request, r)); | |
1961 | } | |
7c673cae FG |
1962 | } else if (mdr->internal_op > -1) { |
1963 | dout(10) << "respond_to_request on internal request " << mdr << dendl; | |
1964 | if (!mdr->internal_op_finish) | |
11fdf7f2 | 1965 | ceph_abort_msg("trying to respond to internal op without finisher"); |
7c673cae FG |
1966 | mdr->internal_op_finish->complete(r); |
1967 | mdcache->request_finish(mdr); | |
1968 | } | |
1969 | } | |
1970 | ||
91327a77 | 1971 | // statistics mds req op number and latency |
9f95a23c | 1972 | void Server::perf_gather_op_latency(const cref_t<MClientRequest> &req, utime_t lat) |
91327a77 AA |
1973 | { |
1974 | int code = l_mdss_first; | |
1975 | switch(req->get_op()) { | |
1976 | case CEPH_MDS_OP_LOOKUPHASH: | |
1977 | code = l_mdss_req_lookuphash_latency; | |
1978 | break; | |
1979 | case CEPH_MDS_OP_LOOKUPINO: | |
1980 | code = l_mdss_req_lookupino_latency; | |
1981 | break; | |
1982 | case CEPH_MDS_OP_LOOKUPPARENT: | |
1983 | code = l_mdss_req_lookupparent_latency; | |
1984 | break; | |
1985 | case CEPH_MDS_OP_LOOKUPNAME: | |
1986 | code = l_mdss_req_lookupname_latency; | |
1987 | break; | |
1988 | case CEPH_MDS_OP_LOOKUP: | |
1989 | code = l_mdss_req_lookup_latency; | |
1990 | break; | |
1991 | case CEPH_MDS_OP_LOOKUPSNAP: | |
1992 | code = l_mdss_req_lookupsnap_latency; | |
1993 | break; | |
1994 | case CEPH_MDS_OP_GETATTR: | |
1995 | code = l_mdss_req_getattr_latency; | |
1996 | break; | |
1997 | case CEPH_MDS_OP_SETATTR: | |
1998 | code = l_mdss_req_setattr_latency; | |
1999 | break; | |
2000 | case CEPH_MDS_OP_SETLAYOUT: | |
2001 | code = l_mdss_req_setlayout_latency; | |
2002 | break; | |
2003 | case CEPH_MDS_OP_SETDIRLAYOUT: | |
2004 | code = l_mdss_req_setdirlayout_latency; | |
2005 | break; | |
1d09f67e TL |
2006 | case CEPH_MDS_OP_GETVXATTR: |
2007 | code = l_mdss_req_getvxattr_latency; | |
2008 | break; | |
91327a77 AA |
2009 | case CEPH_MDS_OP_SETXATTR: |
2010 | code = l_mdss_req_setxattr_latency; | |
2011 | break; | |
2012 | case CEPH_MDS_OP_RMXATTR: | |
2013 | code = l_mdss_req_rmxattr_latency; | |
2014 | break; | |
2015 | case CEPH_MDS_OP_READDIR: | |
2016 | code = l_mdss_req_readdir_latency; | |
2017 | break; | |
2018 | case CEPH_MDS_OP_SETFILELOCK: | |
2019 | code = l_mdss_req_setfilelock_latency; | |
2020 | break; | |
2021 | case CEPH_MDS_OP_GETFILELOCK: | |
2022 | code = l_mdss_req_getfilelock_latency; | |
2023 | break; | |
2024 | case CEPH_MDS_OP_CREATE: | |
2025 | code = l_mdss_req_create_latency; | |
2026 | break; | |
2027 | case CEPH_MDS_OP_OPEN: | |
2028 | code = l_mdss_req_open_latency; | |
2029 | break; | |
2030 | case CEPH_MDS_OP_MKNOD: | |
2031 | code = l_mdss_req_mknod_latency; | |
2032 | break; | |
2033 | case CEPH_MDS_OP_LINK: | |
2034 | code = l_mdss_req_link_latency; | |
2035 | break; | |
2036 | case CEPH_MDS_OP_UNLINK: | |
2037 | code = l_mdss_req_unlink_latency; | |
2038 | break; | |
2039 | case CEPH_MDS_OP_RMDIR: | |
2040 | code = l_mdss_req_rmdir_latency; | |
2041 | break; | |
2042 | case CEPH_MDS_OP_RENAME: | |
2043 | code = l_mdss_req_rename_latency; | |
2044 | break; | |
2045 | case CEPH_MDS_OP_MKDIR: | |
2046 | code = l_mdss_req_mkdir_latency; | |
2047 | break; | |
2048 | case CEPH_MDS_OP_SYMLINK: | |
2049 | code = l_mdss_req_symlink_latency; | |
2050 | break; | |
2051 | case CEPH_MDS_OP_LSSNAP: | |
2052 | code = l_mdss_req_lssnap_latency; | |
2053 | break; | |
2054 | case CEPH_MDS_OP_MKSNAP: | |
2055 | code = l_mdss_req_mksnap_latency; | |
2056 | break; | |
2057 | case CEPH_MDS_OP_RMSNAP: | |
2058 | code = l_mdss_req_rmsnap_latency; | |
2059 | break; | |
2060 | case CEPH_MDS_OP_RENAMESNAP: | |
2061 | code = l_mdss_req_renamesnap_latency; | |
2062 | break; | |
20effc67 TL |
2063 | default: |
2064 | dout(1) << ": unknown client op" << dendl; | |
2065 | return; | |
91327a77 AA |
2066 | } |
2067 | logger->tinc(code, lat); | |
2068 | } | |
2069 | ||
7c673cae FG |
2070 | void Server::early_reply(MDRequestRef& mdr, CInode *tracei, CDentry *tracedn) |
2071 | { | |
11fdf7f2 | 2072 | if (!g_conf()->mds_early_reply) |
7c673cae FG |
2073 | return; |
2074 | ||
b32b8144 FG |
2075 | if (mdr->no_early_reply) { |
2076 | dout(10) << "early_reply - flag no_early_reply is set, not allowed." << dendl; | |
2077 | return; | |
2078 | } | |
2079 | ||
f67539c2 TL |
2080 | if (mdr->has_more() && mdr->more()->has_journaled_peers) { |
2081 | dout(10) << "early_reply - there are journaled peers, not allowed." << dendl; | |
7c673cae FG |
2082 | return; |
2083 | } | |
2084 | ||
2085 | if (mdr->alloc_ino) { | |
2086 | dout(10) << "early_reply - allocated ino, not allowed" << dendl; | |
2087 | return; | |
2088 | } | |
2089 | ||
9f95a23c | 2090 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
2091 | entity_inst_t client_inst = req->get_source_inst(); |
2092 | if (client_inst.name.is_mds()) | |
2093 | return; | |
2094 | ||
2095 | if (req->is_replay()) { | |
2096 | dout(10) << " no early reply on replay op" << dendl; | |
2097 | return; | |
2098 | } | |
2099 | ||
2100 | ||
9f95a23c | 2101 | auto reply = make_message<MClientReply>(*req, 0); |
7c673cae FG |
2102 | reply->set_unsafe(); |
2103 | ||
2104 | // mark xlocks "done", indicating that we are exposing uncommitted changes. | |
2105 | // | |
2106 | //_rename_finish() does not send dentry link/unlink message to replicas. | |
2107 | // so do not set xlocks on dentries "done", the xlocks prevent dentries | |
2108 | // that have projected linkages from getting new replica. | |
2109 | mds->locker->set_xlocks_done(mdr.get(), req->get_op() == CEPH_MDS_OP_RENAME); | |
2110 | ||
2111 | dout(10) << "early_reply " << reply->get_result() | |
2112 | << " (" << cpp_strerror(reply->get_result()) | |
2113 | << ") " << *req << dendl; | |
2114 | ||
2115 | if (tracei || tracedn) { | |
2116 | if (tracei) | |
2117 | mdr->cap_releases.erase(tracei->vino()); | |
2118 | if (tracedn) | |
2119 | mdr->cap_releases.erase(tracedn->get_dir()->get_inode()->vino()); | |
2120 | ||
9f95a23c | 2121 | set_trace_dist(reply, tracei, tracedn, mdr); |
7c673cae FG |
2122 | } |
2123 | ||
2124 | reply->set_extra_bl(mdr->reply_extra_bl); | |
11fdf7f2 | 2125 | mds->send_message_client(reply, mdr->session); |
7c673cae FG |
2126 | |
2127 | mdr->did_early_reply = true; | |
2128 | ||
2129 | mds->logger->inc(l_mds_reply); | |
2130 | utime_t lat = ceph_clock_now() - req->get_recv_stamp(); | |
2131 | mds->logger->tinc(l_mds_reply_latency, lat); | |
33c7a0ef TL |
2132 | if (lat >= g_conf()->mds_op_complaint_time) { |
2133 | mds->logger->inc(l_mds_slow_reply); | |
2134 | } | |
91327a77 AA |
2135 | if (client_inst.name.is_client()) { |
2136 | mds->sessionmap.hit_session(mdr->session); | |
2137 | } | |
2138 | perf_gather_op_latency(req, lat); | |
7c673cae FG |
2139 | dout(20) << "lat " << lat << dendl; |
2140 | ||
2141 | mdr->mark_event("early_replied"); | |
2142 | } | |
2143 | ||
2144 | /* | |
2145 | * send given reply | |
2146 | * include a trace to tracei | |
2147 | * Clean up mdr | |
2148 | */ | |
9f95a23c | 2149 | void Server::reply_client_request(MDRequestRef& mdr, const ref_t<MClientReply> &reply) |
7c673cae | 2150 | { |
11fdf7f2 | 2151 | ceph_assert(mdr.get()); |
9f95a23c | 2152 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
2153 | |
2154 | dout(7) << "reply_client_request " << reply->get_result() | |
2155 | << " (" << cpp_strerror(reply->get_result()) | |
2156 | << ") " << *req << dendl; | |
2157 | ||
2158 | mdr->mark_event("replying"); | |
2159 | ||
2160 | Session *session = mdr->session; | |
2161 | ||
2162 | // note successful request in session map? | |
2163 | // | |
2164 | // setfilelock requests are special, they only modify states in MDS memory. | |
2165 | // The states get lost when MDS fails. If Client re-send a completed | |
2166 | // setfilelock request, it means that client did not receive corresponding | |
2167 | // setfilelock reply. So MDS should re-execute the setfilelock request. | |
2168 | if (req->may_write() && req->get_op() != CEPH_MDS_OP_SETFILELOCK && | |
2169 | reply->get_result() == 0 && session) { | |
2170 | inodeno_t created = mdr->alloc_ino ? mdr->alloc_ino : mdr->used_prealloc_ino; | |
2171 | session->add_completed_request(mdr->reqid.tid, created); | |
2172 | if (mdr->ls) { | |
2173 | mdr->ls->touched_sessions.insert(session->info.inst.name); | |
2174 | } | |
2175 | } | |
2176 | ||
2177 | // give any preallocated inos to the session | |
2178 | apply_allocated_inos(mdr, session); | |
2179 | ||
2180 | // get tracei/tracedn from mdr? | |
7c673cae FG |
2181 | CInode *tracei = mdr->tracei; |
2182 | CDentry *tracedn = mdr->tracedn; | |
2183 | ||
2184 | bool is_replay = mdr->client_request->is_replay(); | |
2185 | bool did_early_reply = mdr->did_early_reply; | |
2186 | entity_inst_t client_inst = req->get_source_inst(); | |
7c673cae FG |
2187 | |
2188 | if (!did_early_reply && !is_replay) { | |
2189 | ||
2190 | mds->logger->inc(l_mds_reply); | |
2191 | utime_t lat = ceph_clock_now() - mdr->client_request->get_recv_stamp(); | |
2192 | mds->logger->tinc(l_mds_reply_latency, lat); | |
33c7a0ef TL |
2193 | if (lat >= g_conf()->mds_op_complaint_time) { |
2194 | mds->logger->inc(l_mds_slow_reply); | |
2195 | } | |
81eedcae | 2196 | if (session && client_inst.name.is_client()) { |
91327a77 AA |
2197 | mds->sessionmap.hit_session(session); |
2198 | } | |
2199 | perf_gather_op_latency(req, lat); | |
7c673cae FG |
2200 | dout(20) << "lat " << lat << dendl; |
2201 | ||
2202 | if (tracei) | |
2203 | mdr->cap_releases.erase(tracei->vino()); | |
2204 | if (tracedn) | |
2205 | mdr->cap_releases.erase(tracedn->get_dir()->get_inode()->vino()); | |
2206 | } | |
2207 | ||
2208 | // drop non-rdlocks before replying, so that we can issue leases | |
2209 | mdcache->request_drop_non_rdlocks(mdr); | |
2210 | ||
2211 | // reply at all? | |
81eedcae | 2212 | if (session && !client_inst.name.is_mds()) { |
7c673cae FG |
2213 | // send reply. |
2214 | if (!did_early_reply && // don't issue leases if we sent an earlier reply already | |
2215 | (tracei || tracedn)) { | |
2216 | if (is_replay) { | |
2217 | if (tracei) | |
2218 | mdcache->try_reconnect_cap(tracei, session); | |
2219 | } else { | |
2220 | // include metadata in reply | |
9f95a23c | 2221 | set_trace_dist(reply, tracei, tracedn, mdr); |
7c673cae FG |
2222 | } |
2223 | } | |
2224 | ||
2225 | // We can set the extra bl unconditionally: if it's already been sent in the | |
2226 | // early_reply, set_extra_bl will have claimed it and reply_extra_bl is empty | |
2227 | reply->set_extra_bl(mdr->reply_extra_bl); | |
2228 | ||
2229 | reply->set_mdsmap_epoch(mds->mdsmap->get_epoch()); | |
11fdf7f2 | 2230 | mds->send_message_client(reply, session); |
7c673cae FG |
2231 | } |
2232 | ||
2233 | if (req->is_queued_for_replay() && | |
2234 | (mdr->has_completed || reply->get_result() < 0)) { | |
2235 | if (reply->get_result() < 0) { | |
2236 | int r = reply->get_result(); | |
2237 | derr << "reply_client_request: failed to replay " << *req | |
2238 | << " error " << r << " (" << cpp_strerror(r) << ")" << dendl; | |
2239 | mds->clog->warn() << "failed to replay " << req->get_reqid() << " error " << r; | |
2240 | } | |
2241 | mds->queue_one_replay(); | |
2242 | } | |
2243 | ||
2244 | // clean up request | |
2245 | mdcache->request_finish(mdr); | |
2246 | ||
2247 | // take a closer look at tracei, if it happens to be a remote link | |
2248 | if (tracei && | |
2249 | tracedn && | |
2250 | tracedn->get_projected_linkage()->is_remote()) { | |
2251 | mdcache->eval_remote(tracedn); | |
2252 | } | |
2253 | } | |
2254 | ||
7c673cae FG |
2255 | /* |
2256 | * pass inode OR dentry (not both, or we may get confused) | |
2257 | * | |
2258 | * trace is in reverse order (i.e. root inode comes last) | |
2259 | */ | |
9f95a23c | 2260 | void Server::set_trace_dist(const ref_t<MClientReply> &reply, |
7c673cae | 2261 | CInode *in, CDentry *dn, |
7c673cae FG |
2262 | MDRequestRef& mdr) |
2263 | { | |
2264 | // skip doing this for debugging purposes? | |
11fdf7f2 | 2265 | if (g_conf()->mds_inject_traceless_reply_probability && |
7c673cae | 2266 | mdr->ls && !mdr->o_trunc && |
11fdf7f2 | 2267 | (rand() % 10000 < g_conf()->mds_inject_traceless_reply_probability * 10000.0)) { |
7c673cae FG |
2268 | dout(5) << "deliberately skipping trace for " << *reply << dendl; |
2269 | return; | |
2270 | } | |
2271 | ||
2272 | // inode, dentry, dir, ..., inode | |
2273 | bufferlist bl; | |
2274 | mds_rank_t whoami = mds->get_nodeid(); | |
9f95a23c TL |
2275 | Session *session = mdr->session; |
2276 | snapid_t snapid = mdr->snapid; | |
7c673cae FG |
2277 | utime_t now = ceph_clock_now(); |
2278 | ||
2279 | dout(20) << "set_trace_dist snapid " << snapid << dendl; | |
2280 | ||
7c673cae FG |
2281 | // realm |
2282 | if (snapid == CEPH_NOSNAP) { | |
2283 | SnapRealm *realm; | |
2284 | if (in) | |
2285 | realm = in->find_snaprealm(); | |
2286 | else | |
2287 | realm = dn->get_dir()->get_inode()->find_snaprealm(); | |
2288 | reply->snapbl = realm->get_snap_trace(); | |
2289 | dout(10) << "set_trace_dist snaprealm " << *realm << " len=" << reply->snapbl.length() << dendl; | |
2290 | } | |
2291 | ||
2292 | // dir + dentry? | |
2293 | if (dn) { | |
2294 | reply->head.is_dentry = 1; | |
2295 | CDir *dir = dn->get_dir(); | |
2296 | CInode *diri = dir->get_inode(); | |
2297 | ||
2298 | diri->encode_inodestat(bl, session, NULL, snapid); | |
2299 | dout(20) << "set_trace_dist added diri " << *diri << dendl; | |
2300 | ||
2301 | #ifdef MDS_VERIFY_FRAGSTAT | |
2302 | if (dir->is_complete()) | |
2303 | dir->verify_fragstat(); | |
2304 | #endif | |
11fdf7f2 TL |
2305 | DirStat ds; |
2306 | ds.frag = dir->get_frag(); | |
2307 | ds.auth = dir->get_dir_auth().first; | |
f91f0fd5 | 2308 | if (dir->is_auth() && !forward_all_requests_to_auth) |
11fdf7f2 TL |
2309 | dir->get_dist_spec(ds.dist, whoami); |
2310 | ||
2311 | dir->encode_dirstat(bl, session->info, ds); | |
7c673cae FG |
2312 | dout(20) << "set_trace_dist added dir " << *dir << dendl; |
2313 | ||
11fdf7f2 | 2314 | encode(dn->get_name(), bl); |
2a845540 | 2315 | mds->locker->issue_client_lease(dn, in, mdr, now, bl); |
7c673cae FG |
2316 | } else |
2317 | reply->head.is_dentry = 0; | |
2318 | ||
2319 | // inode | |
2320 | if (in) { | |
2321 | in->encode_inodestat(bl, session, NULL, snapid, 0, mdr->getattr_caps); | |
2322 | dout(20) << "set_trace_dist added in " << *in << dendl; | |
2323 | reply->head.is_target = 1; | |
2324 | } else | |
2325 | reply->head.is_target = 0; | |
2326 | ||
2327 | reply->set_trace(bl); | |
2328 | } | |
2329 | ||
9f95a23c | 2330 | void Server::handle_client_request(const cref_t<MClientRequest> &req) |
7c673cae FG |
2331 | { |
2332 | dout(4) << "handle_client_request " << *req << dendl; | |
2333 | ||
2334 | if (mds->logger) | |
2335 | mds->logger->inc(l_mds_request); | |
2336 | if (logger) | |
2337 | logger->inc(l_mdss_handle_client_request); | |
2338 | ||
2339 | if (!mdcache->is_open()) { | |
2340 | dout(5) << "waiting for root" << dendl; | |
2341 | mdcache->wait_for_open(new C_MDS_RetryMessage(mds, req)); | |
2342 | return; | |
2343 | } | |
2344 | ||
92f5a8d4 | 2345 | bool sessionclosed_isok = replay_unsafe_with_closed_session; |
7c673cae FG |
2346 | // active session? |
2347 | Session *session = 0; | |
2348 | if (req->get_source().is_client()) { | |
94b18763 | 2349 | session = mds->get_session(req); |
7c673cae FG |
2350 | if (!session) { |
2351 | dout(5) << "no session for " << req->get_source() << ", dropping" << dendl; | |
92f5a8d4 | 2352 | } else if ((session->is_closed() && (!mds->is_clientreplay() || !sessionclosed_isok)) || |
7c673cae FG |
2353 | session->is_closing() || |
2354 | session->is_killing()) { | |
2355 | dout(5) << "session closed|closing|killing, dropping" << dendl; | |
2356 | session = NULL; | |
2357 | } | |
2358 | if (!session) { | |
2359 | if (req->is_queued_for_replay()) | |
2360 | mds->queue_one_replay(); | |
7c673cae FG |
2361 | return; |
2362 | } | |
2363 | } | |
2364 | ||
2365 | // old mdsmap? | |
2366 | if (req->get_mdsmap_epoch() < mds->mdsmap->get_epoch()) { | |
2367 | // send it? hrm, this isn't ideal; they may get a lot of copies if | |
2368 | // they have a high request rate. | |
2369 | } | |
2370 | ||
2371 | // completed request? | |
2372 | bool has_completed = false; | |
2373 | if (req->is_replay() || req->get_retry_attempt()) { | |
11fdf7f2 | 2374 | ceph_assert(session); |
7c673cae FG |
2375 | inodeno_t created; |
2376 | if (session->have_completed_request(req->get_reqid().tid, &created)) { | |
2377 | has_completed = true; | |
92f5a8d4 TL |
2378 | if (!session->is_open()) |
2379 | return; | |
7c673cae FG |
2380 | // Don't send traceless reply if the completed request has created |
2381 | // new inode. Treat the request as lookup request instead. | |
2382 | if (req->is_replay() || | |
2383 | ((created == inodeno_t() || !mds->is_clientreplay()) && | |
2384 | req->get_op() != CEPH_MDS_OP_OPEN && | |
2385 | req->get_op() != CEPH_MDS_OP_CREATE)) { | |
2386 | dout(5) << "already completed " << req->get_reqid() << dendl; | |
9f95a23c | 2387 | auto reply = make_message<MClientReply>(*req, 0); |
7c673cae FG |
2388 | if (created != inodeno_t()) { |
2389 | bufferlist extra; | |
11fdf7f2 | 2390 | encode(created, extra); |
7c673cae FG |
2391 | reply->set_extra_bl(extra); |
2392 | } | |
11fdf7f2 | 2393 | mds->send_message_client(reply, session); |
7c673cae FG |
2394 | |
2395 | if (req->is_queued_for_replay()) | |
2396 | mds->queue_one_replay(); | |
2397 | ||
7c673cae FG |
2398 | return; |
2399 | } | |
2400 | if (req->get_op() != CEPH_MDS_OP_OPEN && | |
2401 | req->get_op() != CEPH_MDS_OP_CREATE) { | |
2402 | dout(10) << " completed request which created new inode " << created | |
2403 | << ", convert it to lookup request" << dendl; | |
2404 | req->head.op = req->get_dentry_wanted() ? CEPH_MDS_OP_LOOKUP : CEPH_MDS_OP_GETATTR; | |
2405 | req->head.args.getattr.mask = CEPH_STAT_CAP_INODE_ALL; | |
2406 | } | |
2407 | } | |
2408 | } | |
2409 | ||
2410 | // trim completed_request list | |
2411 | if (req->get_oldest_client_tid() > 0) { | |
2412 | dout(15) << " oldest_client_tid=" << req->get_oldest_client_tid() << dendl; | |
11fdf7f2 | 2413 | ceph_assert(session); |
7c673cae FG |
2414 | if (session->trim_completed_requests(req->get_oldest_client_tid())) { |
2415 | // Sessions 'completed_requests' was dirtied, mark it to be | |
2416 | // potentially flushed at segment expiry. | |
2417 | mdlog->get_current_segment()->touched_sessions.insert(session->info.inst.name); | |
2418 | ||
2419 | if (session->get_num_trim_requests_warnings() > 0 && | |
11fdf7f2 | 2420 | session->get_num_completed_requests() * 2 < g_conf()->mds_max_completed_requests) |
7c673cae FG |
2421 | session->reset_num_trim_requests_warnings(); |
2422 | } else { | |
2423 | if (session->get_num_completed_requests() >= | |
11fdf7f2 | 2424 | (g_conf()->mds_max_completed_requests << session->get_num_trim_requests_warnings())) { |
7c673cae | 2425 | session->inc_num_trim_requests_warnings(); |
f67539c2 TL |
2426 | CachedStackStringStream css; |
2427 | *css << "client." << session->get_client() << " does not advance its oldest_client_tid (" | |
7c673cae FG |
2428 | << req->get_oldest_client_tid() << "), " |
2429 | << session->get_num_completed_requests() | |
2430 | << " completed requests recorded in session\n"; | |
f67539c2 TL |
2431 | mds->clog->warn() << css->strv(); |
2432 | dout(20) << __func__ << " " << css->strv() << dendl; | |
7c673cae FG |
2433 | } |
2434 | } | |
2435 | } | |
2436 | ||
2437 | // register + dispatch | |
2438 | MDRequestRef mdr = mdcache->request_start(req); | |
2439 | if (!mdr.get()) | |
2440 | return; | |
2441 | ||
2442 | if (session) { | |
2443 | mdr->session = session; | |
2444 | session->requests.push_back(&mdr->item_session_request); | |
2445 | } | |
2446 | ||
2447 | if (has_completed) | |
2448 | mdr->has_completed = true; | |
2449 | ||
2450 | // process embedded cap releases? | |
2451 | // (only if NOT replay!) | |
2452 | if (!req->releases.empty() && req->get_source().is_client() && !req->is_replay()) { | |
2453 | client_t client = req->get_source().num(); | |
11fdf7f2 TL |
2454 | for (const auto &r : req->releases) { |
2455 | mds->locker->process_request_cap_release(mdr, client, r.item, r.dname); | |
2456 | } | |
7c673cae FG |
2457 | req->releases.clear(); |
2458 | } | |
2459 | ||
2460 | dispatch_client_request(mdr); | |
2461 | return; | |
2462 | } | |
2463 | ||
2464 | void Server::handle_osd_map() | |
2465 | { | |
2466 | /* Note that we check the OSDMAP_FULL flag directly rather than | |
2467 | * using osdmap_full_flag(), because we want to know "is the flag set" | |
2468 | * rather than "does the flag apply to us?" */ | |
2469 | mds->objecter->with_osdmap([this](const OSDMap& o) { | |
b3b6e05e | 2470 | auto pi = o.get_pg_pool(mds->get_metadata_pool()); |
b32b8144 | 2471 | is_full = pi && pi->has_flag(pg_pool_t::FLAG_FULL); |
7c673cae FG |
2472 | dout(7) << __func__ << ": full = " << is_full << " epoch = " |
2473 | << o.get_epoch() << dendl; | |
2474 | }); | |
2475 | } | |
2476 | ||
2477 | void Server::dispatch_client_request(MDRequestRef& mdr) | |
2478 | { | |
2479 | // we shouldn't be waiting on anyone. | |
f67539c2 | 2480 | ceph_assert(!mdr->has_more() || mdr->more()->waiting_on_peer.empty()); |
7c673cae FG |
2481 | |
2482 | if (mdr->killed) { | |
2483 | dout(10) << "request " << *mdr << " was killed" << dendl; | |
9f95a23c TL |
2484 | //if the mdr is a "batch_op" and it has followers, pick a follower as |
2485 | //the new "head of the batch ops" and go on processing the new one. | |
f91f0fd5 TL |
2486 | if (mdr->is_batch_head()) { |
2487 | int mask = mdr->client_request->head.args.getattr.mask; | |
2488 | auto it = mdr->batch_op_map->find(mask); | |
2489 | auto new_batch_head = it->second->find_new_head(); | |
2490 | if (!new_batch_head) { | |
2491 | mdr->batch_op_map->erase(it); | |
9f95a23c TL |
2492 | return; |
2493 | } | |
f91f0fd5 | 2494 | mdr = std::move(new_batch_head); |
9f95a23c TL |
2495 | } else { |
2496 | return; | |
2497 | } | |
94b18763 FG |
2498 | } else if (mdr->aborted) { |
2499 | mdr->aborted = false; | |
2500 | mdcache->request_kill(mdr); | |
2501 | return; | |
7c673cae FG |
2502 | } |
2503 | ||
9f95a23c | 2504 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
2505 | |
2506 | if (logger) logger->inc(l_mdss_dispatch_client_request); | |
2507 | ||
2508 | dout(7) << "dispatch_client_request " << *req << dendl; | |
2509 | ||
9f95a23c TL |
2510 | if (req->may_write() && mdcache->is_readonly()) { |
2511 | dout(10) << " read-only FS" << dendl; | |
f67539c2 | 2512 | respond_to_request(mdr, -CEPHFS_EROFS); |
9f95a23c TL |
2513 | return; |
2514 | } | |
f67539c2 TL |
2515 | if (mdr->has_more() && mdr->more()->peer_error) { |
2516 | dout(10) << " got error from peers" << dendl; | |
2517 | respond_to_request(mdr, mdr->more()->peer_error); | |
9f95a23c | 2518 | return; |
7c673cae FG |
2519 | } |
2520 | ||
2521 | if (is_full) { | |
b3b6e05e TL |
2522 | CInode *cur = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
2523 | if (!cur) { | |
20effc67 | 2524 | // the request is already responded to |
b3b6e05e TL |
2525 | return; |
2526 | } | |
7c673cae FG |
2527 | if (req->get_op() == CEPH_MDS_OP_SETLAYOUT || |
2528 | req->get_op() == CEPH_MDS_OP_SETDIRLAYOUT || | |
2529 | req->get_op() == CEPH_MDS_OP_SETLAYOUT || | |
2530 | req->get_op() == CEPH_MDS_OP_RMXATTR || | |
2531 | req->get_op() == CEPH_MDS_OP_SETXATTR || | |
2532 | req->get_op() == CEPH_MDS_OP_CREATE || | |
2533 | req->get_op() == CEPH_MDS_OP_SYMLINK || | |
2534 | req->get_op() == CEPH_MDS_OP_MKSNAP || | |
2535 | ((req->get_op() == CEPH_MDS_OP_LINK || | |
2536 | req->get_op() == CEPH_MDS_OP_RENAME) && | |
f67539c2 | 2537 | (!mdr->has_more() || mdr->more()->witnessed.empty())) // haven't started peer request |
7c673cae FG |
2538 | ) { |
2539 | ||
b3b6e05e TL |
2540 | if (check_access(mdr, cur, MAY_FULL)) { |
2541 | dout(20) << __func__ << ": full, has FULL caps, permitting op " << ceph_mds_op_name(req->get_op()) << dendl; | |
2542 | } else { | |
2543 | dout(20) << __func__ << ": full, responding CEPHFS_ENOSPC to op " << ceph_mds_op_name(req->get_op()) << dendl; | |
2544 | respond_to_request(mdr, -CEPHFS_ENOSPC); | |
2545 | return; | |
2546 | } | |
7c673cae FG |
2547 | } else { |
2548 | dout(20) << __func__ << ": full, permitting op " << ceph_mds_op_name(req->get_op()) << dendl; | |
2549 | } | |
2550 | } | |
2551 | ||
2552 | switch (req->get_op()) { | |
2553 | case CEPH_MDS_OP_LOOKUPHASH: | |
2554 | case CEPH_MDS_OP_LOOKUPINO: | |
2555 | handle_client_lookup_ino(mdr, false, false); | |
2556 | break; | |
2557 | case CEPH_MDS_OP_LOOKUPPARENT: | |
2558 | handle_client_lookup_ino(mdr, true, false); | |
2559 | break; | |
2560 | case CEPH_MDS_OP_LOOKUPNAME: | |
2561 | handle_client_lookup_ino(mdr, false, true); | |
2562 | break; | |
2563 | ||
2564 | // inodes ops. | |
2565 | case CEPH_MDS_OP_LOOKUP: | |
2566 | handle_client_getattr(mdr, true); | |
2567 | break; | |
2568 | ||
2569 | case CEPH_MDS_OP_LOOKUPSNAP: | |
2570 | // lookupsnap does not reference a CDentry; treat it as a getattr | |
2571 | case CEPH_MDS_OP_GETATTR: | |
2572 | handle_client_getattr(mdr, false); | |
2573 | break; | |
1d09f67e TL |
2574 | case CEPH_MDS_OP_GETVXATTR: |
2575 | handle_client_getvxattr(mdr); | |
2576 | break; | |
7c673cae FG |
2577 | |
2578 | case CEPH_MDS_OP_SETATTR: | |
2579 | handle_client_setattr(mdr); | |
2580 | break; | |
2581 | case CEPH_MDS_OP_SETLAYOUT: | |
2582 | handle_client_setlayout(mdr); | |
2583 | break; | |
2584 | case CEPH_MDS_OP_SETDIRLAYOUT: | |
2585 | handle_client_setdirlayout(mdr); | |
2586 | break; | |
2587 | case CEPH_MDS_OP_SETXATTR: | |
2588 | handle_client_setxattr(mdr); | |
2589 | break; | |
2590 | case CEPH_MDS_OP_RMXATTR: | |
2591 | handle_client_removexattr(mdr); | |
2592 | break; | |
2593 | ||
2594 | case CEPH_MDS_OP_READDIR: | |
2595 | handle_client_readdir(mdr); | |
2596 | break; | |
2597 | ||
2598 | case CEPH_MDS_OP_SETFILELOCK: | |
2599 | handle_client_file_setlock(mdr); | |
2600 | break; | |
2601 | ||
2602 | case CEPH_MDS_OP_GETFILELOCK: | |
2603 | handle_client_file_readlock(mdr); | |
2604 | break; | |
2605 | ||
2606 | // funky. | |
2607 | case CEPH_MDS_OP_CREATE: | |
2608 | if (mdr->has_completed) | |
2609 | handle_client_open(mdr); // already created.. just open | |
2610 | else | |
2611 | handle_client_openc(mdr); | |
2612 | break; | |
2613 | ||
2614 | case CEPH_MDS_OP_OPEN: | |
2615 | handle_client_open(mdr); | |
2616 | break; | |
2617 | ||
2618 | // namespace. | |
2619 | // no prior locks. | |
2620 | case CEPH_MDS_OP_MKNOD: | |
2621 | handle_client_mknod(mdr); | |
2622 | break; | |
2623 | case CEPH_MDS_OP_LINK: | |
2624 | handle_client_link(mdr); | |
2625 | break; | |
2626 | case CEPH_MDS_OP_UNLINK: | |
2627 | case CEPH_MDS_OP_RMDIR: | |
2628 | handle_client_unlink(mdr); | |
2629 | break; | |
2630 | case CEPH_MDS_OP_RENAME: | |
2631 | handle_client_rename(mdr); | |
2632 | break; | |
2633 | case CEPH_MDS_OP_MKDIR: | |
2634 | handle_client_mkdir(mdr); | |
2635 | break; | |
2636 | case CEPH_MDS_OP_SYMLINK: | |
2637 | handle_client_symlink(mdr); | |
2638 | break; | |
2639 | ||
2640 | ||
2641 | // snaps | |
2642 | case CEPH_MDS_OP_LSSNAP: | |
2643 | handle_client_lssnap(mdr); | |
2644 | break; | |
2645 | case CEPH_MDS_OP_MKSNAP: | |
2646 | handle_client_mksnap(mdr); | |
2647 | break; | |
2648 | case CEPH_MDS_OP_RMSNAP: | |
2649 | handle_client_rmsnap(mdr); | |
2650 | break; | |
2651 | case CEPH_MDS_OP_RENAMESNAP: | |
2652 | handle_client_renamesnap(mdr); | |
2653 | break; | |
2654 | ||
2655 | default: | |
2656 | dout(1) << " unknown client op " << req->get_op() << dendl; | |
f67539c2 | 2657 | respond_to_request(mdr, -CEPHFS_EOPNOTSUPP); |
7c673cae FG |
2658 | } |
2659 | } | |
2660 | ||
2661 | ||
2662 | // --------------------------------------- | |
f67539c2 | 2663 | // PEER REQUESTS |
7c673cae | 2664 | |
f67539c2 | 2665 | void Server::handle_peer_request(const cref_t<MMDSPeerRequest> &m) |
7c673cae | 2666 | { |
f67539c2 | 2667 | dout(4) << "handle_peer_request " << m->get_reqid() << " from " << m->get_source() << dendl; |
7c673cae FG |
2668 | mds_rank_t from = mds_rank_t(m->get_source().num()); |
2669 | ||
f67539c2 | 2670 | if (logger) logger->inc(l_mdss_handle_peer_request); |
7c673cae FG |
2671 | |
2672 | // reply? | |
2673 | if (m->is_reply()) | |
f67539c2 | 2674 | return handle_peer_request_reply(m); |
7c673cae FG |
2675 | |
2676 | // the purpose of rename notify is enforcing causal message ordering. making sure | |
2677 | // bystanders have received all messages from rename srcdn's auth MDS. | |
f67539c2 TL |
2678 | if (m->get_op() == MMDSPeerRequest::OP_RENAMENOTIFY) { |
2679 | auto reply = make_message<MMDSPeerRequest>(m->get_reqid(), m->get_attempt(), MMDSPeerRequest::OP_RENAMENOTIFYACK); | |
7c673cae | 2680 | mds->send_message(reply, m->get_connection()); |
7c673cae FG |
2681 | return; |
2682 | } | |
2683 | ||
2684 | CDentry *straydn = NULL; | |
11fdf7f2 | 2685 | if (m->straybl.length() > 0) { |
33c7a0ef | 2686 | mdcache->decode_replica_stray(straydn, nullptr, m->straybl, from); |
11fdf7f2 TL |
2687 | ceph_assert(straydn); |
2688 | m->straybl.clear(); | |
7c673cae FG |
2689 | } |
2690 | ||
9f95a23c TL |
2691 | if (!mds->is_clientreplay() && !mds->is_active() && !mds->is_stopping()) { |
2692 | dout(3) << "not clientreplay|active yet, waiting" << dendl; | |
2693 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
2694 | return; | |
2695 | } | |
2696 | ||
f67539c2 | 2697 | // am i a new peer? |
7c673cae FG |
2698 | MDRequestRef mdr; |
2699 | if (mdcache->have_request(m->get_reqid())) { | |
2700 | // existing? | |
2701 | mdr = mdcache->request_get(m->get_reqid()); | |
2702 | ||
2703 | // is my request newer? | |
2704 | if (mdr->attempt > m->get_attempt()) { | |
2705 | dout(10) << "local request " << *mdr << " attempt " << mdr->attempt << " > " << m->get_attempt() | |
2706 | << ", dropping " << *m << dendl; | |
7c673cae FG |
2707 | return; |
2708 | } | |
2709 | ||
7c673cae FG |
2710 | if (mdr->attempt < m->get_attempt()) { |
2711 | // mine is old, close it out | |
2712 | dout(10) << "local request " << *mdr << " attempt " << mdr->attempt << " < " << m->get_attempt() | |
2713 | << ", closing out" << dendl; | |
2714 | mdcache->request_finish(mdr); | |
2715 | mdr.reset(); | |
f67539c2 TL |
2716 | } else if (mdr->peer_to_mds != from) { |
2717 | dout(10) << "local request " << *mdr << " not peer to mds." << from << dendl; | |
7c673cae FG |
2718 | return; |
2719 | } | |
2720 | ||
f67539c2 TL |
2721 | // may get these while mdr->peer_request is non-null |
2722 | if (m->get_op() == MMDSPeerRequest::OP_DROPLOCKS) { | |
9f95a23c TL |
2723 | mds->locker->drop_locks(mdr.get()); |
2724 | return; | |
2725 | } | |
f67539c2 | 2726 | if (m->get_op() == MMDSPeerRequest::OP_FINISH) { |
9f95a23c TL |
2727 | if (m->is_abort()) { |
2728 | mdr->aborted = true; | |
f67539c2 | 2729 | if (mdr->peer_request) { |
9f95a23c | 2730 | // only abort on-going xlock, wrlock and auth pin |
f67539c2 | 2731 | ceph_assert(!mdr->peer_did_prepare()); |
9f95a23c TL |
2732 | } else { |
2733 | mdcache->request_finish(mdr); | |
2734 | } | |
7c673cae | 2735 | } else { |
9f95a23c TL |
2736 | if (m->inode_export.length() > 0) |
2737 | mdr->more()->inode_import = m->inode_export; | |
2738 | // finish off request. | |
7c673cae FG |
2739 | mdcache->request_finish(mdr); |
2740 | } | |
2741 | return; | |
2742 | } | |
2743 | } | |
2744 | if (!mdr.get()) { | |
2745 | // new? | |
f67539c2 TL |
2746 | if (m->get_op() == MMDSPeerRequest::OP_FINISH) { |
2747 | dout(10) << "missing peer request for " << m->get_reqid() | |
7c673cae | 2748 | << " OP_FINISH, must have lost race with a forward" << dendl; |
7c673cae FG |
2749 | return; |
2750 | } | |
f67539c2 | 2751 | mdr = mdcache->request_start_peer(m->get_reqid(), m->get_attempt(), m); |
7c673cae FG |
2752 | mdr->set_op_stamp(m->op_stamp); |
2753 | } | |
f67539c2 | 2754 | ceph_assert(mdr->peer_request == 0); // only one at a time, please! |
7c673cae FG |
2755 | |
2756 | if (straydn) { | |
2757 | mdr->pin(straydn); | |
2758 | mdr->straydn = straydn; | |
2759 | } | |
2760 | ||
9f95a23c TL |
2761 | if (mds->is_clientreplay() && !mds->mdsmap->is_clientreplay(from) && |
2762 | mdr->locks.empty()) { | |
7c673cae FG |
2763 | dout(3) << "not active yet, waiting" << dendl; |
2764 | mds->wait_for_active(new C_MDS_RetryMessage(mds, m)); | |
2765 | return; | |
2766 | } | |
2767 | ||
f67539c2 | 2768 | mdr->reset_peer_request(m); |
7c673cae | 2769 | |
f67539c2 | 2770 | dispatch_peer_request(mdr); |
7c673cae FG |
2771 | } |
2772 | ||
f67539c2 | 2773 | void Server::handle_peer_request_reply(const cref_t<MMDSPeerRequest> &m) |
7c673cae FG |
2774 | { |
2775 | mds_rank_t from = mds_rank_t(m->get_source().num()); | |
2776 | ||
2777 | if (!mds->is_clientreplay() && !mds->is_active() && !mds->is_stopping()) { | |
2778 | metareqid_t r = m->get_reqid(); | |
f67539c2 TL |
2779 | if (!mdcache->have_uncommitted_leader(r, from)) { |
2780 | dout(10) << "handle_peer_request_reply ignoring peer reply from mds." | |
7c673cae | 2781 | << from << " reqid " << r << dendl; |
7c673cae FG |
2782 | return; |
2783 | } | |
2784 | dout(3) << "not clientreplay|active yet, waiting" << dendl; | |
2785 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
2786 | return; | |
2787 | } | |
2788 | ||
f67539c2 | 2789 | if (m->get_op() == MMDSPeerRequest::OP_COMMITTED) { |
7c673cae | 2790 | metareqid_t r = m->get_reqid(); |
f67539c2 | 2791 | mdcache->committed_leader_peer(r, from); |
7c673cae FG |
2792 | return; |
2793 | } | |
2794 | ||
2795 | MDRequestRef mdr = mdcache->request_get(m->get_reqid()); | |
2796 | if (m->get_attempt() != mdr->attempt) { | |
f67539c2 | 2797 | dout(10) << "handle_peer_request_reply " << *mdr << " ignoring reply from other attempt " |
7c673cae | 2798 | << m->get_attempt() << dendl; |
7c673cae FG |
2799 | return; |
2800 | } | |
2801 | ||
2802 | switch (m->get_op()) { | |
f67539c2 | 2803 | case MMDSPeerRequest::OP_XLOCKACK: |
7c673cae | 2804 | { |
f67539c2 | 2805 | // identify lock, leader request |
7c673cae FG |
2806 | SimpleLock *lock = mds->locker->get_lock(m->get_lock_type(), |
2807 | m->get_object_info()); | |
f67539c2 | 2808 | mdr->more()->peers.insert(from); |
11fdf7f2 | 2809 | lock->decode_locked_state(m->get_lock_data()); |
7c673cae | 2810 | dout(10) << "got remote xlock on " << *lock << " on " << *lock->get_parent() << dendl; |
9f95a23c | 2811 | mdr->emplace_lock(lock, MutationImpl::LockOp::XLOCK); |
7c673cae FG |
2812 | mdr->finish_locking(lock); |
2813 | lock->get_xlock(mdr, mdr->get_client()); | |
2814 | ||
f67539c2 TL |
2815 | ceph_assert(mdr->more()->waiting_on_peer.count(from)); |
2816 | mdr->more()->waiting_on_peer.erase(from); | |
2817 | ceph_assert(mdr->more()->waiting_on_peer.empty()); | |
7c673cae FG |
2818 | mdcache->dispatch_request(mdr); |
2819 | } | |
2820 | break; | |
2821 | ||
f67539c2 | 2822 | case MMDSPeerRequest::OP_WRLOCKACK: |
7c673cae | 2823 | { |
f67539c2 | 2824 | // identify lock, leader request |
7c673cae FG |
2825 | SimpleLock *lock = mds->locker->get_lock(m->get_lock_type(), |
2826 | m->get_object_info()); | |
f67539c2 | 2827 | mdr->more()->peers.insert(from); |
7c673cae | 2828 | dout(10) << "got remote wrlock on " << *lock << " on " << *lock->get_parent() << dendl; |
9f95a23c | 2829 | auto it = mdr->emplace_lock(lock, MutationImpl::LockOp::REMOTE_WRLOCK, from); |
11fdf7f2 TL |
2830 | ceph_assert(it->is_remote_wrlock()); |
2831 | ceph_assert(it->wrlock_target == from); | |
2832 | ||
7c673cae FG |
2833 | mdr->finish_locking(lock); |
2834 | ||
f67539c2 TL |
2835 | ceph_assert(mdr->more()->waiting_on_peer.count(from)); |
2836 | mdr->more()->waiting_on_peer.erase(from); | |
2837 | ceph_assert(mdr->more()->waiting_on_peer.empty()); | |
7c673cae FG |
2838 | mdcache->dispatch_request(mdr); |
2839 | } | |
2840 | break; | |
2841 | ||
f67539c2 TL |
2842 | case MMDSPeerRequest::OP_AUTHPINACK: |
2843 | handle_peer_auth_pin_ack(mdr, m); | |
7c673cae FG |
2844 | break; |
2845 | ||
f67539c2 TL |
2846 | case MMDSPeerRequest::OP_LINKPREPACK: |
2847 | handle_peer_link_prep_ack(mdr, m); | |
7c673cae FG |
2848 | break; |
2849 | ||
f67539c2 TL |
2850 | case MMDSPeerRequest::OP_RMDIRPREPACK: |
2851 | handle_peer_rmdir_prep_ack(mdr, m); | |
7c673cae FG |
2852 | break; |
2853 | ||
f67539c2 TL |
2854 | case MMDSPeerRequest::OP_RENAMEPREPACK: |
2855 | handle_peer_rename_prep_ack(mdr, m); | |
7c673cae FG |
2856 | break; |
2857 | ||
f67539c2 TL |
2858 | case MMDSPeerRequest::OP_RENAMENOTIFYACK: |
2859 | handle_peer_rename_notify_ack(mdr, m); | |
7c673cae FG |
2860 | break; |
2861 | ||
2862 | default: | |
2863 | ceph_abort(); | |
2864 | } | |
7c673cae FG |
2865 | } |
2866 | ||
f67539c2 | 2867 | void Server::dispatch_peer_request(MDRequestRef& mdr) |
7c673cae | 2868 | { |
f67539c2 | 2869 | dout(7) << "dispatch_peer_request " << *mdr << " " << *mdr->peer_request << dendl; |
7c673cae FG |
2870 | |
2871 | if (mdr->aborted) { | |
2872 | dout(7) << " abort flag set, finishing" << dendl; | |
2873 | mdcache->request_finish(mdr); | |
2874 | return; | |
2875 | } | |
2876 | ||
f67539c2 | 2877 | if (logger) logger->inc(l_mdss_dispatch_peer_request); |
7c673cae | 2878 | |
f67539c2 | 2879 | int op = mdr->peer_request->get_op(); |
7c673cae | 2880 | switch (op) { |
f67539c2 TL |
2881 | case MMDSPeerRequest::OP_XLOCK: |
2882 | case MMDSPeerRequest::OP_WRLOCK: | |
7c673cae FG |
2883 | { |
2884 | // identify object | |
f67539c2 TL |
2885 | SimpleLock *lock = mds->locker->get_lock(mdr->peer_request->get_lock_type(), |
2886 | mdr->peer_request->get_object_info()); | |
7c673cae FG |
2887 | |
2888 | if (!lock) { | |
2889 | dout(10) << "don't have object, dropping" << dendl; | |
2890 | ceph_abort(); // can this happen, if we auth pinned properly. | |
2891 | } | |
f67539c2 | 2892 | if (op == MMDSPeerRequest::OP_XLOCK && !lock->get_parent()->is_auth()) { |
7c673cae FG |
2893 | dout(10) << "not auth for remote xlock attempt, dropping on " |
2894 | << *lock << " on " << *lock->get_parent() << dendl; | |
2895 | } else { | |
2896 | // use acquire_locks so that we get auth_pinning. | |
11fdf7f2 TL |
2897 | MutationImpl::LockOpVec lov; |
2898 | for (const auto& p : mdr->locks) { | |
2899 | if (p.is_xlock()) | |
2900 | lov.add_xlock(p.lock); | |
2901 | else if (p.is_wrlock()) | |
2902 | lov.add_wrlock(p.lock); | |
2903 | } | |
7c673cae FG |
2904 | |
2905 | int replycode = 0; | |
2906 | switch (op) { | |
f67539c2 | 2907 | case MMDSPeerRequest::OP_XLOCK: |
11fdf7f2 | 2908 | lov.add_xlock(lock); |
f67539c2 | 2909 | replycode = MMDSPeerRequest::OP_XLOCKACK; |
7c673cae | 2910 | break; |
f67539c2 | 2911 | case MMDSPeerRequest::OP_WRLOCK: |
11fdf7f2 | 2912 | lov.add_wrlock(lock); |
f67539c2 | 2913 | replycode = MMDSPeerRequest::OP_WRLOCKACK; |
7c673cae FG |
2914 | break; |
2915 | } | |
2916 | ||
11fdf7f2 | 2917 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
2918 | return; |
2919 | ||
2920 | // ack | |
f67539c2 | 2921 | auto r = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, replycode); |
7c673cae FG |
2922 | r->set_lock_type(lock->get_type()); |
2923 | lock->get_parent()->set_object_info(r->get_object_info()); | |
f67539c2 | 2924 | if (replycode == MMDSPeerRequest::OP_XLOCKACK) |
11fdf7f2 | 2925 | lock->encode_locked_state(r->get_lock_data()); |
f67539c2 | 2926 | mds->send_message(r, mdr->peer_request->get_connection()); |
7c673cae FG |
2927 | } |
2928 | ||
2929 | // done. | |
f67539c2 | 2930 | mdr->reset_peer_request(); |
7c673cae FG |
2931 | } |
2932 | break; | |
2933 | ||
f67539c2 TL |
2934 | case MMDSPeerRequest::OP_UNXLOCK: |
2935 | case MMDSPeerRequest::OP_UNWRLOCK: | |
7c673cae | 2936 | { |
f67539c2 TL |
2937 | SimpleLock *lock = mds->locker->get_lock(mdr->peer_request->get_lock_type(), |
2938 | mdr->peer_request->get_object_info()); | |
11fdf7f2 TL |
2939 | ceph_assert(lock); |
2940 | auto it = mdr->locks.find(lock); | |
2941 | ceph_assert(it != mdr->locks.end()); | |
7c673cae FG |
2942 | bool need_issue = false; |
2943 | switch (op) { | |
f67539c2 | 2944 | case MMDSPeerRequest::OP_UNXLOCK: |
11fdf7f2 | 2945 | mds->locker->xlock_finish(it, mdr.get(), &need_issue); |
7c673cae | 2946 | break; |
f67539c2 | 2947 | case MMDSPeerRequest::OP_UNWRLOCK: |
11fdf7f2 | 2948 | mds->locker->wrlock_finish(it, mdr.get(), &need_issue); |
7c673cae FG |
2949 | break; |
2950 | } | |
2951 | if (need_issue) | |
2952 | mds->locker->issue_caps(static_cast<CInode*>(lock->get_parent())); | |
2953 | ||
2954 | // done. no ack necessary. | |
f67539c2 | 2955 | mdr->reset_peer_request(); |
7c673cae FG |
2956 | } |
2957 | break; | |
2958 | ||
f67539c2 TL |
2959 | case MMDSPeerRequest::OP_AUTHPIN: |
2960 | handle_peer_auth_pin(mdr); | |
7c673cae FG |
2961 | break; |
2962 | ||
f67539c2 TL |
2963 | case MMDSPeerRequest::OP_LINKPREP: |
2964 | case MMDSPeerRequest::OP_UNLINKPREP: | |
2965 | handle_peer_link_prep(mdr); | |
7c673cae FG |
2966 | break; |
2967 | ||
f67539c2 TL |
2968 | case MMDSPeerRequest::OP_RMDIRPREP: |
2969 | handle_peer_rmdir_prep(mdr); | |
7c673cae FG |
2970 | break; |
2971 | ||
f67539c2 TL |
2972 | case MMDSPeerRequest::OP_RENAMEPREP: |
2973 | handle_peer_rename_prep(mdr); | |
7c673cae FG |
2974 | break; |
2975 | ||
7c673cae FG |
2976 | default: |
2977 | ceph_abort(); | |
2978 | } | |
2979 | } | |
2980 | ||
f67539c2 | 2981 | void Server::handle_peer_auth_pin(MDRequestRef& mdr) |
7c673cae | 2982 | { |
f67539c2 | 2983 | dout(10) << "handle_peer_auth_pin " << *mdr << dendl; |
7c673cae FG |
2984 | |
2985 | // build list of objects | |
2986 | list<MDSCacheObject*> objects; | |
2987 | CInode *auth_pin_freeze = NULL; | |
f67539c2 | 2988 | bool nonblocking = mdr->peer_request->is_nonblocking(); |
7c673cae | 2989 | bool fail = false, wouldblock = false, readonly = false; |
f67539c2 | 2990 | ref_t<MMDSPeerRequest> reply; |
7c673cae FG |
2991 | |
2992 | if (mdcache->is_readonly()) { | |
2993 | dout(10) << " read-only FS" << dendl; | |
2994 | readonly = true; | |
2995 | fail = true; | |
2996 | } | |
2997 | ||
2998 | if (!fail) { | |
f67539c2 | 2999 | for (const auto &oi : mdr->peer_request->get_authpins()) { |
11fdf7f2 | 3000 | MDSCacheObject *object = mdcache->get_object(oi); |
7c673cae | 3001 | if (!object) { |
11fdf7f2 | 3002 | dout(10) << " don't have " << oi << dendl; |
7c673cae FG |
3003 | fail = true; |
3004 | break; | |
3005 | } | |
3006 | ||
3007 | objects.push_back(object); | |
f67539c2 | 3008 | if (oi == mdr->peer_request->get_authpin_freeze()) |
7c673cae FG |
3009 | auth_pin_freeze = static_cast<CInode*>(object); |
3010 | } | |
3011 | } | |
3012 | ||
3013 | // can we auth pin them? | |
3014 | if (!fail) { | |
9f95a23c TL |
3015 | for (const auto& obj : objects) { |
3016 | if (!obj->is_auth()) { | |
3017 | dout(10) << " not auth for " << *obj << dendl; | |
7c673cae FG |
3018 | fail = true; |
3019 | break; | |
3020 | } | |
9f95a23c | 3021 | if (mdr->is_auth_pinned(obj)) |
7c673cae | 3022 | continue; |
9f95a23c TL |
3023 | if (!mdr->can_auth_pin(obj)) { |
3024 | if (nonblocking) { | |
3025 | dout(10) << " can't auth_pin (freezing?) " << *obj << " nonblocking" << dendl; | |
7c673cae FG |
3026 | fail = true; |
3027 | wouldblock = true; | |
3028 | break; | |
3029 | } | |
3030 | // wait | |
9f95a23c TL |
3031 | dout(10) << " waiting for authpinnable on " << *obj << dendl; |
3032 | obj->add_waiter(CDir::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
7c673cae FG |
3033 | mdr->drop_local_auth_pins(); |
3034 | ||
9f95a23c TL |
3035 | mds->locker->notify_freeze_waiter(obj); |
3036 | goto blocked; | |
7c673cae FG |
3037 | } |
3038 | } | |
3039 | } | |
3040 | ||
9f95a23c | 3041 | if (!fail) { |
7c673cae FG |
3042 | /* freeze authpin wrong inode */ |
3043 | if (mdr->has_more() && mdr->more()->is_freeze_authpin && | |
3044 | mdr->more()->rename_inode != auth_pin_freeze) | |
3045 | mdr->unfreeze_auth_pin(true); | |
3046 | ||
f67539c2 | 3047 | /* handle_peer_rename_prep() call freeze_inode() to wait for all other operations |
7c673cae FG |
3048 | * on the source inode to complete. This happens after all locks for the rename |
3049 | * operation are acquired. But to acquire locks, we need auth pin locks' parent | |
3050 | * objects first. So there is an ABBA deadlock if someone auth pins the source inode | |
f67539c2 | 3051 | * after locks are acquired and before Server::handle_peer_rename_prep() is called. |
7c673cae FG |
3052 | * The solution is freeze the inode and prevent other MDRequests from getting new |
3053 | * auth pins. | |
3054 | */ | |
3055 | if (auth_pin_freeze) { | |
3056 | dout(10) << " freezing auth pin on " << *auth_pin_freeze << dendl; | |
3057 | if (!mdr->freeze_auth_pin(auth_pin_freeze)) { | |
3058 | auth_pin_freeze->add_waiter(CInode::WAIT_FROZEN, new C_MDS_RetryRequest(mdcache, mdr)); | |
3059 | mds->mdlog->flush(); | |
9f95a23c | 3060 | goto blocked; |
7c673cae FG |
3061 | } |
3062 | } | |
7c673cae FG |
3063 | } |
3064 | ||
f67539c2 | 3065 | reply = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_AUTHPINACK); |
7c673cae | 3066 | |
9f95a23c TL |
3067 | if (fail) { |
3068 | mdr->drop_local_auth_pins(); // just in case | |
3069 | if (readonly) | |
3070 | reply->mark_error_rofs(); | |
3071 | if (wouldblock) | |
3072 | reply->mark_error_wouldblock(); | |
3073 | } else { | |
3074 | // auth pin! | |
3075 | for (const auto& obj : objects) { | |
3076 | dout(10) << "auth_pinning " << *obj << dendl; | |
3077 | mdr->auth_pin(obj); | |
3078 | } | |
3079 | // return list of my auth_pins (if any) | |
3080 | for (const auto &p : mdr->object_states) { | |
3081 | if (!p.second.auth_pinned) | |
3082 | continue; | |
3083 | MDSCacheObjectInfo info; | |
3084 | p.first->set_object_info(info); | |
3085 | reply->get_authpins().push_back(info); | |
3086 | if (p.first == (MDSCacheObject*)auth_pin_freeze) | |
3087 | auth_pin_freeze->set_object_info(reply->get_authpin_freeze()); | |
3088 | } | |
3089 | } | |
7c673cae | 3090 | |
f67539c2 | 3091 | mds->send_message_mds(reply, mdr->peer_to_mds); |
7c673cae FG |
3092 | |
3093 | // clean up this request | |
f67539c2 | 3094 | mdr->reset_peer_request(); |
7c673cae | 3095 | return; |
9f95a23c TL |
3096 | |
3097 | blocked: | |
f67539c2 TL |
3098 | if (mdr->peer_request->should_notify_blocking()) { |
3099 | reply = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_AUTHPINACK); | |
9f95a23c | 3100 | reply->mark_req_blocked(); |
f67539c2 TL |
3101 | mds->send_message_mds(reply, mdr->peer_to_mds); |
3102 | mdr->peer_request->clear_notify_blocking(); | |
9f95a23c TL |
3103 | } |
3104 | return; | |
7c673cae FG |
3105 | } |
3106 | ||
f67539c2 | 3107 | void Server::handle_peer_auth_pin_ack(MDRequestRef& mdr, const cref_t<MMDSPeerRequest> &ack) |
7c673cae | 3108 | { |
f67539c2 | 3109 | dout(10) << "handle_peer_auth_pin_ack on " << *mdr << " " << *ack << dendl; |
7c673cae FG |
3110 | mds_rank_t from = mds_rank_t(ack->get_source().num()); |
3111 | ||
9f95a23c TL |
3112 | if (ack->is_req_blocked()) { |
3113 | mdr->disable_lock_cache(); | |
f67539c2 | 3114 | // peer auth pin is blocked, drop locks to avoid deadlock |
9f95a23c TL |
3115 | mds->locker->drop_locks(mdr.get(), nullptr); |
3116 | return; | |
3117 | } | |
3118 | ||
7c673cae FG |
3119 | // added auth pins? |
3120 | set<MDSCacheObject*> pinned; | |
11fdf7f2 TL |
3121 | for (const auto &oi : ack->get_authpins()) { |
3122 | MDSCacheObject *object = mdcache->get_object(oi); | |
3123 | ceph_assert(object); // we pinned it | |
7c673cae | 3124 | dout(10) << " remote has pinned " << *object << dendl; |
9f95a23c | 3125 | mdr->set_remote_auth_pinned(object, from); |
11fdf7f2 | 3126 | if (oi == ack->get_authpin_freeze()) |
7c673cae FG |
3127 | mdr->set_remote_frozen_auth_pin(static_cast<CInode *>(object)); |
3128 | pinned.insert(object); | |
3129 | } | |
3130 | ||
3131 | // removed frozen auth pin ? | |
3132 | if (mdr->more()->is_remote_frozen_authpin && | |
3133 | ack->get_authpin_freeze() == MDSCacheObjectInfo()) { | |
9f95a23c TL |
3134 | auto stat_p = mdr->find_object_state(mdr->more()->rename_inode); |
3135 | ceph_assert(stat_p); | |
3136 | if (stat_p->remote_auth_pinned == from) { | |
7c673cae FG |
3137 | mdr->more()->is_remote_frozen_authpin = false; |
3138 | } | |
3139 | } | |
3140 | ||
3141 | // removed auth pins? | |
9f95a23c TL |
3142 | for (auto& p : mdr->object_states) { |
3143 | if (p.second.remote_auth_pinned == MDS_RANK_NONE) | |
3144 | continue; | |
3145 | MDSCacheObject* object = p.first; | |
3146 | if (p.second.remote_auth_pinned == from && pinned.count(object) == 0) { | |
7c673cae | 3147 | dout(10) << " remote has unpinned " << *object << dendl; |
9f95a23c | 3148 | mdr->_clear_remote_auth_pinned(p.second); |
7c673cae FG |
3149 | } |
3150 | } | |
3151 | ||
f67539c2 TL |
3152 | // note peer |
3153 | mdr->more()->peers.insert(from); | |
9f95a23c TL |
3154 | |
3155 | // clear from waiting list | |
f67539c2 | 3156 | auto ret = mdr->more()->waiting_on_peer.erase(from); |
9f95a23c TL |
3157 | ceph_assert(ret); |
3158 | ||
7c673cae | 3159 | if (ack->is_error_rofs()) { |
f67539c2 | 3160 | mdr->more()->peer_error = -CEPHFS_EROFS; |
7c673cae | 3161 | } else if (ack->is_error_wouldblock()) { |
f67539c2 | 3162 | mdr->more()->peer_error = -CEPHFS_EWOULDBLOCK; |
7c673cae | 3163 | } |
7c673cae FG |
3164 | |
3165 | // go again? | |
f67539c2 | 3166 | if (mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
3167 | mdcache->dispatch_request(mdr); |
3168 | else | |
f67539c2 | 3169 | dout(10) << "still waiting on peers " << mdr->more()->waiting_on_peer << dendl; |
7c673cae FG |
3170 | } |
3171 | ||
3172 | ||
3173 | // --------------------------------------- | |
3174 | // HELPERS | |
3175 | ||
3176 | ||
3177 | /** | |
3178 | * check whether we are permitted to complete a request | |
3179 | * | |
3180 | * Check whether we have permission to perform the operation specified | |
3181 | * by mask on the given inode, based on the capability in the mdr's | |
3182 | * session. | |
3183 | */ | |
3184 | bool Server::check_access(MDRequestRef& mdr, CInode *in, unsigned mask) | |
3185 | { | |
3186 | if (mdr->session) { | |
3187 | int r = mdr->session->check_access( | |
3188 | in, mask, | |
3189 | mdr->client_request->get_caller_uid(), | |
3190 | mdr->client_request->get_caller_gid(), | |
3191 | &mdr->client_request->get_caller_gid_list(), | |
3192 | mdr->client_request->head.args.setattr.uid, | |
3193 | mdr->client_request->head.args.setattr.gid); | |
3194 | if (r < 0) { | |
3195 | respond_to_request(mdr, r); | |
3196 | return false; | |
3197 | } | |
3198 | } | |
3199 | return true; | |
3200 | } | |
3201 | ||
3202 | /** | |
3203 | * check whether fragment has reached maximum size | |
3204 | * | |
3205 | */ | |
20effc67 | 3206 | bool Server::check_fragment_space(MDRequestRef &mdr, CDir *dir) |
7c673cae | 3207 | { |
20effc67 TL |
3208 | const auto size = dir->get_frag_size(); |
3209 | const auto max = bal_fragment_size_max; | |
3210 | if (size >= max) { | |
3211 | dout(10) << "fragment " << *dir << " size exceeds " << max << " (CEPHFS_ENOSPC)" << dendl; | |
f67539c2 | 3212 | respond_to_request(mdr, -CEPHFS_ENOSPC); |
7c673cae | 3213 | return false; |
20effc67 TL |
3214 | } else { |
3215 | dout(20) << "fragment " << *dir << " size " << size << " < " << max << dendl; | |
7c673cae FG |
3216 | } |
3217 | ||
3218 | return true; | |
3219 | } | |
3220 | ||
20effc67 TL |
3221 | /** |
3222 | * check whether entries in a dir reached maximum size | |
3223 | * | |
3224 | */ | |
3225 | bool Server::check_dir_max_entries(MDRequestRef &mdr, CDir *in) | |
3226 | { | |
3227 | const uint64_t size = in->inode->get_projected_inode()->dirstat.nfiles + | |
3228 | in->inode->get_projected_inode()->dirstat.nsubdirs; | |
3229 | if (dir_max_entries && size >= dir_max_entries) { | |
3230 | dout(10) << "entries per dir " << *in << " size exceeds " << dir_max_entries << " (ENOSPC)" << dendl; | |
3231 | respond_to_request(mdr, -ENOSPC); | |
3232 | return false; | |
3233 | } | |
3234 | return true; | |
3235 | } | |
3236 | ||
3237 | ||
7c673cae FG |
3238 | CDentry* Server::prepare_stray_dentry(MDRequestRef& mdr, CInode *in) |
3239 | { | |
f67539c2 TL |
3240 | string straydname; |
3241 | in->name_stray_dentry(straydname); | |
3242 | ||
7c673cae FG |
3243 | CDentry *straydn = mdr->straydn; |
3244 | if (straydn) { | |
9f95a23c TL |
3245 | ceph_assert(straydn->get_name() == straydname); |
3246 | return straydn; | |
7c673cae | 3247 | } |
7c673cae FG |
3248 | CDir *straydir = mdcache->get_stray_dir(in); |
3249 | ||
3250 | if (!mdr->client_request->is_replay() && | |
3251 | !check_fragment_space(mdr, straydir)) | |
f67539c2 TL |
3252 | return nullptr; |
3253 | ||
3254 | straydn = straydir->lookup(straydname); | |
3255 | if (!straydn) { | |
3256 | if (straydir->is_frozen_dir()) { | |
3257 | dout(10) << __func__ << ": " << *straydir << " is frozen, waiting" << dendl; | |
3258 | mds->locker->drop_locks(mdr.get()); | |
3259 | mdr->drop_local_auth_pins(); | |
3260 | straydir->add_waiter(CInode::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
3261 | return nullptr; | |
3262 | } | |
3263 | straydn = straydir->add_null_dentry(straydname); | |
3264 | straydn->mark_new(); | |
3265 | } else { | |
3266 | ceph_assert(straydn->get_projected_linkage()->is_null()); | |
3267 | } | |
7c673cae | 3268 | |
f67539c2 | 3269 | straydn->state_set(CDentry::STATE_STRAY); |
7c673cae FG |
3270 | mdr->straydn = straydn; |
3271 | mdr->pin(straydn); | |
f67539c2 | 3272 | |
7c673cae FG |
3273 | return straydn; |
3274 | } | |
3275 | ||
3276 | /** prepare_new_inode | |
3277 | * | |
3278 | * create a new inode. set c/m/atime. hit dir pop. | |
3279 | */ | |
3280 | CInode* Server::prepare_new_inode(MDRequestRef& mdr, CDir *dir, inodeno_t useino, unsigned mode, | |
f67539c2 | 3281 | const file_layout_t *layout) |
7c673cae FG |
3282 | { |
3283 | CInode *in = new CInode(mdcache); | |
f67539c2 | 3284 | auto _inode = in->_get_inode(); |
7c673cae FG |
3285 | |
3286 | // Server::prepare_force_open_sessions() can re-open session in closing | |
3287 | // state. In that corner case, session's prealloc_inos are being freed. | |
3288 | // To simplify the code, we disallow using/refilling session's prealloc_ino | |
3289 | // while session is opening. | |
92f5a8d4 | 3290 | bool allow_prealloc_inos = mdr->session->is_open(); |
7c673cae FG |
3291 | |
3292 | // assign ino | |
f67539c2 | 3293 | if (allow_prealloc_inos && (mdr->used_prealloc_ino = _inode->ino = mdr->session->take_ino(useino))) { |
7c673cae | 3294 | mds->sessionmap.mark_projected(mdr->session); |
7c673cae | 3295 | dout(10) << "prepare_new_inode used_prealloc " << mdr->used_prealloc_ino |
f67539c2 | 3296 | << " (" << mdr->session->info.prealloc_inos.size() << " left)" |
7c673cae FG |
3297 | << dendl; |
3298 | } else { | |
3299 | mdr->alloc_ino = | |
f67539c2 | 3300 | _inode->ino = mds->inotable->project_alloc_id(useino); |
7c673cae FG |
3301 | dout(10) << "prepare_new_inode alloc " << mdr->alloc_ino << dendl; |
3302 | } | |
3303 | ||
f67539c2 TL |
3304 | if (useino && useino != _inode->ino) { |
3305 | dout(0) << "WARNING: client specified " << useino << " and i allocated " << _inode->ino << dendl; | |
7c673cae FG |
3306 | mds->clog->error() << mdr->client_request->get_source() |
3307 | << " specified ino " << useino | |
f67539c2 | 3308 | << " but mds." << mds->get_nodeid() << " allocated " << _inode->ino; |
7c673cae FG |
3309 | //ceph_abort(); // just for now. |
3310 | } | |
3311 | ||
3312 | if (allow_prealloc_inos && | |
11fdf7f2 TL |
3313 | mdr->session->get_num_projected_prealloc_inos() < g_conf()->mds_client_prealloc_inos / 2) { |
3314 | int need = g_conf()->mds_client_prealloc_inos - mdr->session->get_num_projected_prealloc_inos(); | |
7c673cae | 3315 | mds->inotable->project_alloc_ids(mdr->prealloc_inos, need); |
11fdf7f2 | 3316 | ceph_assert(mdr->prealloc_inos.size()); // or else fix projected increment semantics |
7c673cae FG |
3317 | mdr->session->pending_prealloc_inos.insert(mdr->prealloc_inos); |
3318 | mds->sessionmap.mark_projected(mdr->session); | |
3319 | dout(10) << "prepare_new_inode prealloc " << mdr->prealloc_inos << dendl; | |
3320 | } | |
3321 | ||
f67539c2 TL |
3322 | _inode->version = 1; |
3323 | _inode->xattr_version = 1; | |
3324 | _inode->nlink = 1; // FIXME | |
7c673cae | 3325 | |
f67539c2 | 3326 | _inode->mode = mode; |
7c673cae | 3327 | |
92f5a8d4 | 3328 | // FIPS zeroization audit 20191117: this memset is not security related. |
f67539c2 TL |
3329 | memset(&_inode->dir_layout, 0, sizeof(_inode->dir_layout)); |
3330 | if (_inode->is_dir()) { | |
3331 | _inode->dir_layout.dl_dir_hash = g_conf()->mds_default_dir_hash; | |
7c673cae | 3332 | } else if (layout) { |
f67539c2 | 3333 | _inode->layout = *layout; |
7c673cae | 3334 | } else { |
f67539c2 | 3335 | _inode->layout = mdcache->default_file_layout; |
7c673cae FG |
3336 | } |
3337 | ||
f67539c2 TL |
3338 | _inode->truncate_size = -1ull; // not truncated, yet! |
3339 | _inode->truncate_seq = 1; /* starting with 1, 0 is kept for no-truncation logic */ | |
7c673cae FG |
3340 | |
3341 | CInode *diri = dir->get_inode(); | |
2a845540 | 3342 | auto pip = diri->get_projected_inode(); |
7c673cae | 3343 | |
2a845540 | 3344 | dout(10) << oct << " dir mode 0" << pip->mode << " new mode 0" << mode << dec << dendl; |
7c673cae | 3345 | |
2a845540 | 3346 | if (pip->mode & S_ISGID) { |
7c673cae | 3347 | dout(10) << " dir is sticky" << dendl; |
2a845540 | 3348 | _inode->gid = pip->gid; |
7c673cae | 3349 | if (S_ISDIR(mode)) { |
2a845540 | 3350 | dout(10) << " new dir also sticky" << dendl; |
f67539c2 | 3351 | _inode->mode |= S_ISGID; |
7c673cae | 3352 | } |
2a845540 | 3353 | } else { |
f67539c2 | 3354 | _inode->gid = mdr->client_request->get_caller_gid(); |
2a845540 | 3355 | } |
7c673cae | 3356 | |
f67539c2 | 3357 | _inode->uid = mdr->client_request->get_caller_uid(); |
7c673cae | 3358 | |
f67539c2 | 3359 | _inode->btime = _inode->ctime = _inode->mtime = _inode->atime = |
7c673cae FG |
3360 | mdr->get_op_stamp(); |
3361 | ||
f67539c2 | 3362 | _inode->change_attr = 0; |
7c673cae | 3363 | |
9f95a23c | 3364 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 3365 | if (req->get_data().length()) { |
11fdf7f2 | 3366 | auto p = req->get_data().cbegin(); |
7c673cae FG |
3367 | |
3368 | // xattrs on new inode? | |
f67539c2 TL |
3369 | auto _xattrs = CInode::allocate_xattr_map(); |
3370 | decode_noshare(*_xattrs, p); | |
3371 | dout(10) << "prepare_new_inode setting xattrs " << *_xattrs << dendl; | |
20effc67 TL |
3372 | if (_xattrs->count("encryption.ctx")) { |
3373 | _inode->fscrypt = true; | |
3374 | } | |
f67539c2 | 3375 | in->reset_xattrs(std::move(_xattrs)); |
7c673cae FG |
3376 | } |
3377 | ||
3378 | if (!mds->mdsmap->get_inline_data_enabled() || | |
11fdf7f2 | 3379 | !mdr->session->get_connection()->has_feature(CEPH_FEATURE_MDS_INLINE_DATA)) |
f67539c2 | 3380 | _inode->inline_data.version = CEPH_INLINE_NONE; |
7c673cae FG |
3381 | |
3382 | mdcache->add_inode(in); // add | |
3383 | dout(10) << "prepare_new_inode " << *in << dendl; | |
3384 | return in; | |
3385 | } | |
3386 | ||
3387 | void Server::journal_allocated_inos(MDRequestRef& mdr, EMetaBlob *blob) | |
3388 | { | |
3389 | dout(20) << "journal_allocated_inos sessionmapv " << mds->sessionmap.get_projected() | |
3390 | << " inotablev " << mds->inotable->get_projected_version() | |
3391 | << dendl; | |
3392 | blob->set_ino_alloc(mdr->alloc_ino, | |
3393 | mdr->used_prealloc_ino, | |
3394 | mdr->prealloc_inos, | |
3395 | mdr->client_request->get_source(), | |
3396 | mds->sessionmap.get_projected(), | |
3397 | mds->inotable->get_projected_version()); | |
3398 | } | |
3399 | ||
3400 | void Server::apply_allocated_inos(MDRequestRef& mdr, Session *session) | |
3401 | { | |
3402 | dout(10) << "apply_allocated_inos " << mdr->alloc_ino | |
3403 | << " / " << mdr->prealloc_inos | |
3404 | << " / " << mdr->used_prealloc_ino << dendl; | |
3405 | ||
3406 | if (mdr->alloc_ino) { | |
3407 | mds->inotable->apply_alloc_id(mdr->alloc_ino); | |
3408 | } | |
3409 | if (mdr->prealloc_inos.size()) { | |
11fdf7f2 | 3410 | ceph_assert(session); |
7c673cae | 3411 | session->pending_prealloc_inos.subtract(mdr->prealloc_inos); |
f67539c2 | 3412 | session->free_prealloc_inos.insert(mdr->prealloc_inos); |
7c673cae | 3413 | session->info.prealloc_inos.insert(mdr->prealloc_inos); |
81eedcae | 3414 | mds->sessionmap.mark_dirty(session, !mdr->used_prealloc_ino); |
7c673cae FG |
3415 | mds->inotable->apply_alloc_ids(mdr->prealloc_inos); |
3416 | } | |
3417 | if (mdr->used_prealloc_ino) { | |
11fdf7f2 | 3418 | ceph_assert(session); |
f67539c2 | 3419 | session->info.prealloc_inos.erase(mdr->used_prealloc_ino); |
7c673cae FG |
3420 | mds->sessionmap.mark_dirty(session); |
3421 | } | |
3422 | } | |
3423 | ||
2a845540 TL |
3424 | struct C_MDS_TryOpenInode : public ServerContext { |
3425 | MDRequestRef mdr; | |
3426 | inodeno_t ino; | |
3427 | C_MDS_TryOpenInode(Server *s, MDRequestRef& r, inodeno_t i) : | |
3428 | ServerContext(s), mdr(r), ino(i) {} | |
3429 | void finish(int r) override { | |
3430 | server->_try_open_ino(mdr, r, ino); | |
3431 | } | |
3432 | }; | |
3433 | ||
3434 | void Server::_try_open_ino(MDRequestRef& mdr, int r, inodeno_t ino) | |
3435 | { | |
3436 | dout(10) << "_try_open_ino " << mdr.get() << " ino " << ino << " r=" << r << dendl; | |
3437 | ||
3438 | // `r` is a rank if >=0, else an error code | |
3439 | if (r >= 0) { | |
3440 | mds_rank_t dest_rank(r); | |
3441 | if (dest_rank == mds->get_nodeid()) | |
3442 | dispatch_client_request(mdr); | |
3443 | else | |
3444 | mdcache->request_forward(mdr, dest_rank); | |
3445 | return; | |
3446 | } | |
3447 | ||
3448 | // give up | |
3449 | if (r == -CEPHFS_ENOENT || r == -CEPHFS_ENODATA) | |
3450 | r = -CEPHFS_ESTALE; | |
3451 | respond_to_request(mdr, r); | |
3452 | } | |
3453 | ||
7c673cae FG |
3454 | class C_MDS_TryFindInode : public ServerContext { |
3455 | MDRequestRef mdr; | |
2a845540 TL |
3456 | MDCache *mdcache; |
3457 | inodeno_t ino; | |
7c673cae | 3458 | public: |
2a845540 TL |
3459 | C_MDS_TryFindInode(Server *s, MDRequestRef& r, MDCache *m, inodeno_t i) : |
3460 | ServerContext(s), mdr(r), mdcache(m), ino(i) {} | |
7c673cae | 3461 | void finish(int r) override { |
2a845540 TL |
3462 | if (r == -CEPHFS_ESTALE) { // :( find_ino_peers failed |
3463 | /* | |
3464 | * There has one case that when the MDS crashes and the | |
3465 | * openfiletable journal couldn't be flushed and then | |
3466 | * the replacing MDS is possibly won't load some already | |
3467 | * opened CInodes into the MDCache. And if the clients | |
3468 | * will retry some requests after reconnected, the MDS | |
3469 | * will return -ESTALE after failing to find the ino in | |
3470 | * all active peers. | |
3471 | * | |
3472 | * As a workaround users can run `ls -R ${mountpoint}` | |
3473 | * to list all the sub-files or sub-direcotries from the | |
3474 | * mountpoint. | |
3475 | * | |
3476 | * We need try to open the ino and try it again. | |
3477 | */ | |
3478 | CInode *in = mdcache->get_inode(ino); | |
3479 | if (in && in->state_test(CInode::STATE_PURGING)) | |
3480 | server->respond_to_request(mdr, r); | |
3481 | else | |
3482 | mdcache->open_ino(ino, (int64_t)-1, new C_MDS_TryOpenInode(server, mdr, ino)); | |
3483 | } else { | |
7c673cae | 3484 | server->dispatch_client_request(mdr); |
2a845540 | 3485 | } |
7c673cae FG |
3486 | } |
3487 | }; | |
3488 | ||
7c673cae FG |
3489 | /* If this returns null, the request has been handled |
3490 | * as appropriate: forwarded on, or the client's been replied to */ | |
9f95a23c | 3491 | CInode* Server::rdlock_path_pin_ref(MDRequestRef& mdr, |
7c673cae | 3492 | bool want_auth, |
9f95a23c | 3493 | bool no_want_auth) |
7c673cae | 3494 | { |
9f95a23c | 3495 | const filepath& refpath = mdr->get_filepath(); |
7c673cae FG |
3496 | dout(10) << "rdlock_path_pin_ref " << *mdr << " " << refpath << dendl; |
3497 | ||
9f95a23c TL |
3498 | if (mdr->locking_state & MutationImpl::PATH_LOCKED) |
3499 | return mdr->in[0]; | |
7c673cae FG |
3500 | |
3501 | // traverse | |
f67539c2 | 3502 | CF_MDS_RetryRequestFactory cf(mdcache, mdr, true); |
9f95a23c TL |
3503 | int flags = 0; |
3504 | if (refpath.is_last_snap()) { | |
3505 | if (!no_want_auth) | |
3506 | want_auth = true; | |
3507 | } else { | |
f91f0fd5 TL |
3508 | if (!no_want_auth && forward_all_requests_to_auth) |
3509 | want_auth = true; | |
9f95a23c TL |
3510 | flags |= MDS_TRAVERSE_RDLOCK_PATH | MDS_TRAVERSE_RDLOCK_SNAP; |
3511 | } | |
3512 | if (want_auth) | |
3513 | flags |= MDS_TRAVERSE_WANT_AUTH; | |
3514 | int r = mdcache->path_traverse(mdr, cf, refpath, flags, &mdr->dn[0], &mdr->in[0]); | |
7c673cae | 3515 | if (r > 0) |
9f95a23c | 3516 | return nullptr; // delayed |
7c673cae | 3517 | if (r < 0) { // error |
f67539c2 | 3518 | if (r == -CEPHFS_ENOENT && !mdr->dn[0].empty()) { |
9f95a23c TL |
3519 | if (mdr->client_request && |
3520 | mdr->client_request->get_dentry_wanted()) | |
3521 | mdr->tracedn = mdr->dn[0].back(); | |
7c673cae | 3522 | respond_to_request(mdr, r); |
f67539c2 TL |
3523 | } else if (r == -CEPHFS_ESTALE) { |
3524 | dout(10) << "FAIL on CEPHFS_ESTALE but attempting recovery" << dendl; | |
2a845540 TL |
3525 | inodeno_t ino = refpath.get_ino(); |
3526 | mdcache->find_ino_peers(ino, new C_MDS_TryFindInode(this, mdr, mdcache, ino)); | |
7c673cae FG |
3527 | } else { |
3528 | dout(10) << "FAIL on error " << r << dendl; | |
3529 | respond_to_request(mdr, r); | |
3530 | } | |
9f95a23c | 3531 | return nullptr; |
7c673cae | 3532 | } |
9f95a23c | 3533 | CInode *ref = mdr->in[0]; |
7c673cae FG |
3534 | dout(10) << "ref is " << *ref << dendl; |
3535 | ||
7c673cae | 3536 | if (want_auth) { |
7c673cae FG |
3537 | // auth_pin? |
3538 | // do NOT proceed if freezing, as cap release may defer in that case, and | |
3539 | // we could deadlock when we try to lock @ref. | |
3540 | // if we're already auth_pinned, continue; the release has already been processed. | |
3541 | if (ref->is_frozen() || ref->is_frozen_auth_pin() || | |
3542 | (ref->is_freezing() && !mdr->is_auth_pinned(ref))) { | |
3543 | dout(7) << "waiting for !frozen/authpinnable on " << *ref << dendl; | |
9f95a23c TL |
3544 | ref->add_waiter(CInode::WAIT_UNFREEZE, cf.build()); |
3545 | if (mdr->is_any_remote_auth_pin()) | |
224ce89b | 3546 | mds->locker->notify_freeze_waiter(ref); |
7c673cae FG |
3547 | return 0; |
3548 | } | |
7c673cae FG |
3549 | mdr->auth_pin(ref); |
3550 | } | |
3551 | ||
7c673cae FG |
3552 | // set and pin ref |
3553 | mdr->pin(ref); | |
3554 | return ref; | |
3555 | } | |
3556 | ||
3557 | ||
3558 | /** rdlock_path_xlock_dentry | |
3559 | * traverse path to the directory that could/would contain dentry. | |
3560 | * make sure i am auth for that dentry, forward as necessary. | |
3561 | * create null dentry in place (or use existing if okexist). | |
3562 | * get rdlocks on traversed dentries, xlock on new dentry. | |
3563 | */ | |
9f95a23c TL |
3564 | CDentry* Server::rdlock_path_xlock_dentry(MDRequestRef& mdr, |
3565 | bool create, bool okexist, bool want_layout) | |
7c673cae | 3566 | { |
9f95a23c | 3567 | const filepath& refpath = mdr->get_filepath(); |
7c673cae FG |
3568 | dout(10) << "rdlock_path_xlock_dentry " << *mdr << " " << refpath << dendl; |
3569 | ||
9f95a23c TL |
3570 | if (mdr->locking_state & MutationImpl::PATH_LOCKED) |
3571 | return mdr->dn[0].back(); | |
3572 | ||
3573 | // figure parent dir vs dname | |
3574 | if (refpath.depth() == 0) { | |
3575 | dout(7) << "invalid path (zero length)" << dendl; | |
f67539c2 | 3576 | respond_to_request(mdr, -CEPHFS_EINVAL); |
9f95a23c TL |
3577 | return nullptr; |
3578 | } | |
3579 | ||
3580 | if (refpath.is_last_snap()) { | |
f67539c2 | 3581 | respond_to_request(mdr, -CEPHFS_EROFS); |
9f95a23c TL |
3582 | return nullptr; |
3583 | } | |
7c673cae | 3584 | |
9f95a23c TL |
3585 | if (refpath.is_last_dot_or_dotdot()) { |
3586 | dout(7) << "invalid path (last dot or dot_dot)" << dendl; | |
3587 | if (create) | |
f67539c2 | 3588 | respond_to_request(mdr, -CEPHFS_EEXIST); |
9f95a23c | 3589 | else |
f67539c2 | 3590 | respond_to_request(mdr, -CEPHFS_ENOTEMPTY); |
9f95a23c TL |
3591 | return nullptr; |
3592 | } | |
7c673cae | 3593 | |
9f95a23c | 3594 | // traverse to parent dir |
f67539c2 | 3595 | CF_MDS_RetryRequestFactory cf(mdcache, mdr, true); |
9f95a23c TL |
3596 | int flags = MDS_TRAVERSE_RDLOCK_SNAP | MDS_TRAVERSE_RDLOCK_PATH | |
3597 | MDS_TRAVERSE_WANT_DENTRY | MDS_TRAVERSE_XLOCK_DENTRY | | |
3598 | MDS_TRAVERSE_WANT_AUTH; | |
3599 | if (refpath.depth() == 1 && !mdr->lock_cache_disabled) | |
3600 | flags |= MDS_TRAVERSE_CHECK_LOCKCACHE; | |
3601 | if (create) | |
3602 | flags |= MDS_TRAVERSE_RDLOCK_AUTHLOCK; | |
3603 | if (want_layout) | |
3604 | flags |= MDS_TRAVERSE_WANT_DIRLAYOUT; | |
3605 | int r = mdcache->path_traverse(mdr, cf, refpath, flags, &mdr->dn[0]); | |
3606 | if (r > 0) | |
3607 | return nullptr; // delayed | |
3608 | if (r < 0) { | |
f67539c2 TL |
3609 | if (r == -CEPHFS_ESTALE) { |
3610 | dout(10) << "FAIL on CEPHFS_ESTALE but attempting recovery" << dendl; | |
2a845540 TL |
3611 | inodeno_t ino = refpath.get_ino(); |
3612 | mdcache->find_ino_peers(ino, new C_MDS_TryFindInode(this, mdr, mdcache, ino)); | |
9f95a23c TL |
3613 | return nullptr; |
3614 | } | |
3615 | respond_to_request(mdr, r); | |
3616 | return nullptr; | |
3617 | } | |
7c673cae | 3618 | |
9f95a23c TL |
3619 | CDentry *dn = mdr->dn[0].back(); |
3620 | CDir *dir = dn->get_dir(); | |
7c673cae | 3621 | CInode *diri = dir->get_inode(); |
9f95a23c | 3622 | |
7c673cae FG |
3623 | if (!mdr->reqid.name.is_mds()) { |
3624 | if (diri->is_system() && !diri->is_root()) { | |
f67539c2 | 3625 | respond_to_request(mdr, -CEPHFS_EROFS); |
9f95a23c | 3626 | return nullptr; |
7c673cae FG |
3627 | } |
3628 | } | |
9f95a23c | 3629 | |
7c673cae | 3630 | if (!diri->is_base() && diri->get_projected_parent_dir()->inode->is_stray()) { |
f67539c2 | 3631 | respond_to_request(mdr, -CEPHFS_ENOENT); |
9f95a23c | 3632 | return nullptr; |
7c673cae FG |
3633 | } |
3634 | ||
9f95a23c TL |
3635 | CDentry::linkage_t *dnl = dn->get_projected_linkage(); |
3636 | if (dnl->is_null()) { | |
3637 | if (!create && okexist) { | |
f67539c2 | 3638 | respond_to_request(mdr, -CEPHFS_ENOENT); |
9f95a23c | 3639 | return nullptr; |
7c673cae FG |
3640 | } |
3641 | ||
9f95a23c TL |
3642 | snapid_t next_snap = mdcache->get_global_snaprealm()->get_newest_seq() + 1; |
3643 | dn->first = std::max(dn->first, next_snap); | |
7c673cae | 3644 | } else { |
9f95a23c | 3645 | if (!okexist) { |
f67539c2 | 3646 | respond_to_request(mdr, -CEPHFS_EEXIST); |
9f95a23c TL |
3647 | return nullptr; |
3648 | } | |
3649 | mdr->in[0] = dnl->get_inode(); | |
7c673cae FG |
3650 | } |
3651 | ||
7c673cae FG |
3652 | return dn; |
3653 | } | |
3654 | ||
9f95a23c TL |
3655 | /** rdlock_two_paths_xlock_destdn |
3656 | * traverse two paths and lock the two paths in proper order. | |
3657 | * The order of taking locks is: | |
3658 | * 1. Lock directory inodes or dentries according to which trees they | |
3659 | * are under. Lock objects under fs root before objects under mdsdir. | |
3660 | * 2. Lock directory inodes or dentries according to their depth, in | |
3661 | * ascending order. | |
3662 | * 3. Lock directory inodes or dentries according to inode numbers or | |
3663 | * dentries' parent inode numbers, in ascending order. | |
3664 | * 4. Lock dentries in the same directory in order of their keys. | |
3665 | * 5. Lock non-directory inodes according to inode numbers, in ascending | |
3666 | * order. | |
3667 | */ | |
3668 | std::pair<CDentry*, CDentry*> | |
3669 | Server::rdlock_two_paths_xlock_destdn(MDRequestRef& mdr, bool xlock_srcdn) | |
3670 | { | |
7c673cae | 3671 | |
9f95a23c TL |
3672 | const filepath& refpath = mdr->get_filepath(); |
3673 | const filepath& refpath2 = mdr->get_filepath2(); | |
7c673cae | 3674 | |
9f95a23c | 3675 | dout(10) << "rdlock_two_paths_xlock_destdn " << *mdr << " " << refpath << " " << refpath2 << dendl; |
7c673cae | 3676 | |
9f95a23c TL |
3677 | if (mdr->locking_state & MutationImpl::PATH_LOCKED) |
3678 | return std::make_pair(mdr->dn[0].back(), mdr->dn[1].back()); | |
7c673cae | 3679 | |
9f95a23c | 3680 | if (refpath.depth() != 1 || refpath2.depth() != 1) { |
f67539c2 | 3681 | respond_to_request(mdr, -CEPHFS_EINVAL); |
9f95a23c TL |
3682 | return std::pair<CDentry*, CDentry*>(nullptr, nullptr); |
3683 | } | |
3684 | ||
3685 | if (refpath.is_last_snap() || refpath2.is_last_snap()) { | |
f67539c2 | 3686 | respond_to_request(mdr, -CEPHFS_EROFS); |
9f95a23c TL |
3687 | return std::make_pair(nullptr, nullptr); |
3688 | } | |
3689 | ||
3690 | // traverse to parent dir | |
f67539c2 | 3691 | CF_MDS_RetryRequestFactory cf(mdcache, mdr, true); |
9f95a23c TL |
3692 | int flags = MDS_TRAVERSE_RDLOCK_SNAP | MDS_TRAVERSE_WANT_DENTRY | MDS_TRAVERSE_WANT_AUTH; |
3693 | int r = mdcache->path_traverse(mdr, cf, refpath, flags, &mdr->dn[0]); | |
3694 | if (r != 0) { | |
f67539c2 TL |
3695 | if (r == -CEPHFS_ESTALE) { |
3696 | dout(10) << "CEPHFS_ESTALE on path, attempting recovery" << dendl; | |
2a845540 TL |
3697 | inodeno_t ino = refpath.get_ino(); |
3698 | mdcache->find_ino_peers(ino, new C_MDS_TryFindInode(this, mdr, mdcache, ino)); | |
9f95a23c TL |
3699 | } else if (r < 0) { |
3700 | respond_to_request(mdr, r); | |
3701 | } | |
3702 | return std::make_pair(nullptr, nullptr); | |
3703 | } | |
3704 | ||
3705 | flags = MDS_TRAVERSE_RDLOCK_SNAP2 | MDS_TRAVERSE_WANT_DENTRY | MDS_TRAVERSE_DISCOVER; | |
3706 | r = mdcache->path_traverse(mdr, cf, refpath2, flags, &mdr->dn[1]); | |
3707 | if (r != 0) { | |
f67539c2 TL |
3708 | if (r == -CEPHFS_ESTALE) { |
3709 | dout(10) << "CEPHFS_ESTALE on path2, attempting recovery" << dendl; | |
2a845540 TL |
3710 | inodeno_t ino = refpath2.get_ino(); |
3711 | mdcache->find_ino_peers(ino, new C_MDS_TryFindInode(this, mdr, mdcache, ino)); | |
9f95a23c TL |
3712 | } else if (r < 0) { |
3713 | respond_to_request(mdr, r); | |
3714 | } | |
3715 | return std::make_pair(nullptr, nullptr); | |
3716 | } | |
3717 | ||
3718 | CDentry *srcdn = mdr->dn[1].back(); | |
3719 | CDir *srcdir = srcdn->get_dir(); | |
3720 | CDentry *destdn = mdr->dn[0].back(); | |
3721 | CDir *destdir = destdn->get_dir(); | |
3722 | ||
3723 | if (!mdr->reqid.name.is_mds()) { | |
3724 | if ((srcdir->get_inode()->is_system() && !srcdir->get_inode()->is_root()) || | |
3725 | (destdir->get_inode()->is_system() && !destdir->get_inode()->is_root())) { | |
f67539c2 | 3726 | respond_to_request(mdr, -CEPHFS_EROFS); |
9f95a23c TL |
3727 | return std::make_pair(nullptr, nullptr); |
3728 | } | |
3729 | } | |
3730 | ||
3731 | if (!destdir->get_inode()->is_base() && | |
3732 | destdir->get_inode()->get_projected_parent_dir()->inode->is_stray()) { | |
f67539c2 | 3733 | respond_to_request(mdr, -CEPHFS_ENOENT); |
9f95a23c TL |
3734 | return std::make_pair(nullptr, nullptr); |
3735 | } | |
3736 | ||
3737 | MutationImpl::LockOpVec lov; | |
3738 | if (srcdir->get_inode() == destdir->get_inode()) { | |
3739 | lov.add_wrlock(&destdir->inode->filelock); | |
3740 | lov.add_wrlock(&destdir->inode->nestlock); | |
3741 | if (xlock_srcdn && srcdir != destdir) { | |
3742 | mds_rank_t srcdir_auth = srcdir->authority().first; | |
3743 | if (srcdir_auth != mds->get_nodeid()) { | |
3744 | lov.add_remote_wrlock(&srcdir->inode->filelock, srcdir_auth); | |
3745 | lov.add_remote_wrlock(&srcdir->inode->nestlock, srcdir_auth); | |
3746 | } | |
3747 | } | |
3748 | ||
3749 | if (srcdn->get_name() > destdn->get_name()) | |
3750 | lov.add_xlock(&destdn->lock); | |
3751 | ||
3752 | if (xlock_srcdn) | |
3753 | lov.add_xlock(&srcdn->lock); | |
3754 | else | |
3755 | lov.add_rdlock(&srcdn->lock); | |
3756 | ||
3757 | if (srcdn->get_name() < destdn->get_name()) | |
3758 | lov.add_xlock(&destdn->lock); | |
3759 | } else { | |
3760 | int cmp = mdr->compare_paths(); | |
3761 | bool lock_destdir_first = | |
3762 | (cmp < 0 || (cmp == 0 && destdir->ino() < srcdir->ino())); | |
3763 | ||
3764 | if (lock_destdir_first) { | |
3765 | lov.add_wrlock(&destdir->inode->filelock); | |
3766 | lov.add_wrlock(&destdir->inode->nestlock); | |
3767 | lov.add_xlock(&destdn->lock); | |
3768 | } | |
3769 | ||
3770 | if (xlock_srcdn) { | |
3771 | mds_rank_t srcdir_auth = srcdir->authority().first; | |
3772 | if (srcdir_auth == mds->get_nodeid()) { | |
3773 | lov.add_wrlock(&srcdir->inode->filelock); | |
3774 | lov.add_wrlock(&srcdir->inode->nestlock); | |
3775 | } else { | |
3776 | lov.add_remote_wrlock(&srcdir->inode->filelock, srcdir_auth); | |
3777 | lov.add_remote_wrlock(&srcdir->inode->nestlock, srcdir_auth); | |
3778 | } | |
3779 | lov.add_xlock(&srcdn->lock); | |
3780 | } else { | |
3781 | lov.add_rdlock(&srcdn->lock); | |
3782 | } | |
3783 | ||
3784 | if (!lock_destdir_first) { | |
3785 | lov.add_wrlock(&destdir->inode->filelock); | |
3786 | lov.add_wrlock(&destdir->inode->nestlock); | |
3787 | lov.add_xlock(&destdn->lock); | |
3788 | } | |
3789 | } | |
3790 | ||
3791 | CInode *auth_pin_freeze = nullptr; | |
3792 | // XXX any better way to do this? | |
3793 | if (xlock_srcdn && !srcdn->is_auth()) { | |
3794 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); | |
3795 | auth_pin_freeze = srcdnl->is_primary() ? srcdnl->get_inode() : nullptr; | |
3796 | } | |
3797 | if (!mds->locker->acquire_locks(mdr, lov, auth_pin_freeze)) | |
3798 | return std::make_pair(nullptr, nullptr); | |
3799 | ||
3800 | if (srcdn->get_projected_linkage()->is_null()) { | |
f67539c2 | 3801 | respond_to_request(mdr, -CEPHFS_ENOENT); |
9f95a23c TL |
3802 | return std::make_pair(nullptr, nullptr); |
3803 | } | |
3804 | ||
3805 | if (destdn->get_projected_linkage()->is_null()) { | |
3806 | snapid_t next_snap = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
3807 | destdn->first = std::max(destdn->first, next_snap); | |
3808 | } | |
3809 | ||
3810 | mdr->locking_state |= MutationImpl::PATH_LOCKED; | |
3811 | ||
3812 | return std::make_pair(destdn, srcdn); | |
3813 | } | |
3814 | ||
3815 | /** | |
3816 | * try_open_auth_dirfrag -- open dirfrag, or forward to dirfrag auth | |
3817 | * | |
3818 | * @param diri base inode | |
3819 | * @param fg the exact frag we want | |
7c673cae FG |
3820 | * @param mdr request |
3821 | * @returns the pointer, or NULL if it had to be delayed (but mdr is taken care of) | |
3822 | */ | |
3823 | CDir* Server::try_open_auth_dirfrag(CInode *diri, frag_t fg, MDRequestRef& mdr) | |
3824 | { | |
3825 | CDir *dir = diri->get_dirfrag(fg); | |
3826 | ||
9f95a23c TL |
3827 | if (dir) { |
3828 | // am i auth for the dirfrag? | |
3829 | if (!dir->is_auth()) { | |
3830 | mds_rank_t auth = dir->authority().first; | |
3831 | dout(7) << "try_open_auth_dirfrag: not auth for " << *dir | |
3832 | << ", fw to mds." << auth << dendl; | |
3833 | mdcache->request_forward(mdr, auth); | |
3834 | return nullptr; | |
3835 | } | |
3836 | } else { | |
3837 | // not open and inode not mine? | |
3838 | if (!diri->is_auth()) { | |
3839 | mds_rank_t inauth = diri->authority().first; | |
3840 | dout(7) << "try_open_auth_dirfrag: not open, not inode auth, fw to mds." << inauth << dendl; | |
3841 | mdcache->request_forward(mdr, inauth); | |
3842 | return nullptr; | |
3843 | } | |
7c673cae | 3844 | |
9f95a23c TL |
3845 | // not open and inode frozen? |
3846 | if (diri->is_frozen()) { | |
3847 | dout(10) << "try_open_auth_dirfrag: dir inode is frozen, waiting " << *diri << dendl; | |
3848 | ceph_assert(diri->get_parent_dir()); | |
3849 | diri->add_waiter(CInode::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
3850 | return nullptr; | |
3851 | } | |
7c673cae | 3852 | |
9f95a23c | 3853 | // invent? |
7c673cae | 3854 | dir = diri->get_or_open_dirfrag(mdcache, fg); |
7c673cae FG |
3855 | } |
3856 | ||
3857 | return dir; | |
3858 | } | |
3859 | ||
3860 | ||
3861 | // =============================================================================== | |
3862 | // STAT | |
3863 | ||
3864 | void Server::handle_client_getattr(MDRequestRef& mdr, bool is_lookup) | |
3865 | { | |
9f95a23c | 3866 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
3867 | |
3868 | if (req->get_filepath().depth() == 0 && is_lookup) { | |
3869 | // refpath can't be empty for lookup but it can for | |
3870 | // getattr (we do getattr with empty refpath for mount of '/') | |
f67539c2 | 3871 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
3872 | return; |
3873 | } | |
3874 | ||
28e407b8 AA |
3875 | bool want_auth = false; |
3876 | int mask = req->head.args.getattr.mask; | |
3877 | if (mask & CEPH_STAT_RSTAT) | |
3878 | want_auth = true; // set want_auth for CEPH_STAT_RSTAT mask | |
3879 | ||
f91f0fd5 | 3880 | if (!mdr->is_batch_head() && mdr->can_batch()) { |
f67539c2 | 3881 | CF_MDS_RetryRequestFactory cf(mdcache, mdr, false); |
f91f0fd5 TL |
3882 | int r = mdcache->path_traverse(mdr, cf, mdr->get_filepath(), |
3883 | (want_auth ? MDS_TRAVERSE_WANT_AUTH : 0), | |
3884 | &mdr->dn[0], &mdr->in[0]); | |
3885 | if (r > 0) | |
3886 | return; // delayed | |
9f95a23c | 3887 | |
f91f0fd5 TL |
3888 | if (r < 0) { |
3889 | // fall-thru. let rdlock_path_pin_ref() check again. | |
3890 | } else if (is_lookup) { | |
3891 | CDentry* dn = mdr->dn[0].back(); | |
3892 | mdr->pin(dn); | |
3893 | auto em = dn->batch_ops.emplace(std::piecewise_construct, std::forward_as_tuple(mask), std::forward_as_tuple()); | |
9f95a23c | 3894 | if (em.second) { |
f91f0fd5 | 3895 | em.first->second = std::make_unique<Batch_Getattr_Lookup>(this, mdr); |
9f95a23c | 3896 | } else { |
f91f0fd5 | 3897 | dout(20) << __func__ << ": LOOKUP op, wait for previous same getattr ops to respond. " << *mdr << dendl; |
9f95a23c TL |
3898 | em.first->second->add_request(mdr); |
3899 | return; | |
3900 | } | |
3901 | } else { | |
f91f0fd5 TL |
3902 | CInode *in = mdr->in[0]; |
3903 | mdr->pin(in); | |
3904 | auto em = in->batch_ops.emplace(std::piecewise_construct, std::forward_as_tuple(mask), std::forward_as_tuple()); | |
9f95a23c | 3905 | if (em.second) { |
f91f0fd5 | 3906 | em.first->second = std::make_unique<Batch_Getattr_Lookup>(this, mdr); |
9f95a23c | 3907 | } else { |
f91f0fd5 | 3908 | dout(20) << __func__ << ": GETATTR op, wait for previous same getattr ops to respond. " << *mdr << dendl; |
9f95a23c TL |
3909 | em.first->second->add_request(mdr); |
3910 | return; | |
3911 | } | |
3912 | } | |
9f95a23c | 3913 | } |
7c673cae | 3914 | |
f91f0fd5 TL |
3915 | CInode *ref = rdlock_path_pin_ref(mdr, want_auth, false); |
3916 | if (!ref) | |
3917 | return; | |
3918 | ||
3919 | mdr->getattr_caps = mask; | |
3920 | ||
7c673cae FG |
3921 | /* |
3922 | * if client currently holds the EXCL cap on a field, do not rdlock | |
3923 | * it; client's stat() will result in valid info if _either_ EXCL | |
3924 | * cap is held or MDS rdlocks and reads the value here. | |
3925 | * | |
3926 | * handling this case here is easier than weakening rdlock | |
3927 | * semantics... that would cause problems elsewhere. | |
3928 | */ | |
3929 | client_t client = mdr->get_client(); | |
3930 | int issued = 0; | |
3931 | Capability *cap = ref->get_client_cap(client); | |
3932 | if (cap && (mdr->snapid == CEPH_NOSNAP || | |
3933 | mdr->snapid <= cap->client_follows)) | |
3934 | issued = cap->issued(); | |
3935 | ||
9f95a23c TL |
3936 | // FIXME |
3937 | MutationImpl::LockOpVec lov; | |
94b18763 | 3938 | if ((mask & CEPH_CAP_LINK_SHARED) && !(issued & CEPH_CAP_LINK_EXCL)) |
11fdf7f2 | 3939 | lov.add_rdlock(&ref->linklock); |
94b18763 | 3940 | if ((mask & CEPH_CAP_AUTH_SHARED) && !(issued & CEPH_CAP_AUTH_EXCL)) |
11fdf7f2 | 3941 | lov.add_rdlock(&ref->authlock); |
94b18763 | 3942 | if ((mask & CEPH_CAP_XATTR_SHARED) && !(issued & CEPH_CAP_XATTR_EXCL)) |
11fdf7f2 | 3943 | lov.add_rdlock(&ref->xattrlock); |
94b18763 FG |
3944 | if ((mask & CEPH_CAP_FILE_SHARED) && !(issued & CEPH_CAP_FILE_EXCL)) { |
3945 | // Don't wait on unstable filelock if client is allowed to read file size. | |
3946 | // This can reduce the response time of getattr in the case that multiple | |
3947 | // clients do stat(2) and there are writers. | |
3948 | // The downside of this optimization is that mds may not issue Fs caps along | |
3949 | // with getattr reply. Client may need to send more getattr requests. | |
11fdf7f2 TL |
3950 | if (mdr->is_rdlocked(&ref->filelock)) { |
3951 | lov.add_rdlock(&ref->filelock); | |
94b18763 FG |
3952 | } else if (ref->filelock.is_stable() || |
3953 | ref->filelock.get_num_wrlocks() > 0 || | |
3954 | !ref->filelock.can_read(mdr->get_client())) { | |
11fdf7f2 | 3955 | lov.add_rdlock(&ref->filelock); |
9f95a23c | 3956 | mdr->locking_state &= ~MutationImpl::ALL_LOCKED; |
94b18763 FG |
3957 | } |
3958 | } | |
7c673cae | 3959 | |
11fdf7f2 | 3960 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
3961 | return; |
3962 | ||
3963 | if (!check_access(mdr, ref, MAY_READ)) | |
3964 | return; | |
3965 | ||
28e407b8 AA |
3966 | utime_t now = ceph_clock_now(); |
3967 | mdr->set_mds_stamp(now); | |
3968 | ||
7c673cae FG |
3969 | // note which caps are requested, so we return at least a snapshot |
3970 | // value for them. (currently this matters for xattrs and inline data) | |
3971 | mdr->getattr_caps = mask; | |
3972 | ||
11fdf7f2 | 3973 | mds->balancer->hit_inode(ref, META_POP_IRD, req->get_source().num()); |
7c673cae FG |
3974 | |
3975 | // reply | |
3976 | dout(10) << "reply to stat on " << *req << dendl; | |
3977 | mdr->tracei = ref; | |
3978 | if (is_lookup) | |
3979 | mdr->tracedn = mdr->dn[0].back(); | |
3980 | respond_to_request(mdr, 0); | |
3981 | } | |
3982 | ||
3983 | struct C_MDS_LookupIno2 : public ServerContext { | |
3984 | MDRequestRef mdr; | |
3985 | C_MDS_LookupIno2(Server *s, MDRequestRef& r) : ServerContext(s), mdr(r) {} | |
3986 | void finish(int r) override { | |
3987 | server->_lookup_ino_2(mdr, r); | |
3988 | } | |
3989 | }; | |
3990 | ||
7c673cae FG |
3991 | /* |
3992 | * filepath: ino | |
3993 | */ | |
3994 | void Server::handle_client_lookup_ino(MDRequestRef& mdr, | |
3995 | bool want_parent, bool want_dentry) | |
3996 | { | |
9f95a23c | 3997 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 TL |
3998 | |
3999 | if ((uint64_t)req->head.args.lookupino.snapid > 0) | |
4000 | return _lookup_snap_ino(mdr); | |
7c673cae FG |
4001 | |
4002 | inodeno_t ino = req->get_filepath().get_ino(); | |
b3b6e05e TL |
4003 | auto _ino = ino.val; |
4004 | ||
4005 | /* It's been observed [1] that a client may lookup a private ~mdsdir inode. | |
4006 | * I do not have an explanation for how that happened organically but this | |
4007 | * check will ensure that the client can no longer do that. | |
4008 | * | |
4009 | * [1] https://tracker.ceph.com/issues/49922 | |
4010 | */ | |
4011 | if (MDS_IS_PRIVATE_INO(_ino)) { | |
4012 | respond_to_request(mdr, -CEPHFS_ESTALE); | |
4013 | return; | |
4014 | } | |
4015 | ||
7c673cae FG |
4016 | CInode *in = mdcache->get_inode(ino); |
4017 | if (in && in->state_test(CInode::STATE_PURGING)) { | |
f67539c2 | 4018 | respond_to_request(mdr, -CEPHFS_ESTALE); |
7c673cae FG |
4019 | return; |
4020 | } | |
4021 | if (!in) { | |
4022 | mdcache->open_ino(ino, (int64_t)-1, new C_MDS_LookupIno2(this, mdr), false); | |
4023 | return; | |
4024 | } | |
4025 | ||
7c673cae FG |
4026 | // check for nothing (not read or write); this still applies the |
4027 | // path check. | |
4028 | if (!check_access(mdr, in, 0)) | |
4029 | return; | |
4030 | ||
4031 | CDentry *dn = in->get_projected_parent_dn(); | |
4032 | CInode *diri = dn ? dn->get_dir()->inode : NULL; | |
4033 | ||
11fdf7f2 | 4034 | MutationImpl::LockOpVec lov; |
7c673cae FG |
4035 | if (dn && (want_parent || want_dentry)) { |
4036 | mdr->pin(dn); | |
11fdf7f2 | 4037 | lov.add_rdlock(&dn->lock); |
7c673cae FG |
4038 | } |
4039 | ||
11fdf7f2 | 4040 | unsigned mask = req->head.args.lookupino.mask; |
7c673cae FG |
4041 | if (mask) { |
4042 | Capability *cap = in->get_client_cap(mdr->get_client()); | |
4043 | int issued = 0; | |
4044 | if (cap && (mdr->snapid == CEPH_NOSNAP || mdr->snapid <= cap->client_follows)) | |
4045 | issued = cap->issued(); | |
9f95a23c | 4046 | // FIXME |
7c673cae FG |
4047 | // permission bits, ACL/security xattrs |
4048 | if ((mask & CEPH_CAP_AUTH_SHARED) && (issued & CEPH_CAP_AUTH_EXCL) == 0) | |
11fdf7f2 | 4049 | lov.add_rdlock(&in->authlock); |
7c673cae | 4050 | if ((mask & CEPH_CAP_XATTR_SHARED) && (issued & CEPH_CAP_XATTR_EXCL) == 0) |
11fdf7f2 | 4051 | lov.add_rdlock(&in->xattrlock); |
7c673cae FG |
4052 | |
4053 | mdr->getattr_caps = mask; | |
4054 | } | |
4055 | ||
11fdf7f2 TL |
4056 | if (!lov.empty()) { |
4057 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
4058 | return; |
4059 | ||
d2e6a577 FG |
4060 | if (diri != NULL) { |
4061 | // need read access to directory inode | |
4062 | if (!check_access(mdr, diri, MAY_READ)) | |
4063 | return; | |
4064 | } | |
7c673cae FG |
4065 | } |
4066 | ||
4067 | if (want_parent) { | |
4068 | if (in->is_base()) { | |
f67539c2 | 4069 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
4070 | return; |
4071 | } | |
4072 | if (!diri || diri->is_stray()) { | |
f67539c2 | 4073 | respond_to_request(mdr, -CEPHFS_ESTALE); |
7c673cae FG |
4074 | return; |
4075 | } | |
4076 | dout(10) << "reply to lookup_parent " << *in << dendl; | |
4077 | mdr->tracei = diri; | |
4078 | respond_to_request(mdr, 0); | |
4079 | } else { | |
4080 | if (want_dentry) { | |
4081 | inodeno_t dirino = req->get_filepath2().get_ino(); | |
4082 | if (!diri || (dirino != inodeno_t() && diri->ino() != dirino)) { | |
f67539c2 | 4083 | respond_to_request(mdr, -CEPHFS_ENOENT); |
7c673cae FG |
4084 | return; |
4085 | } | |
4086 | dout(10) << "reply to lookup_name " << *in << dendl; | |
4087 | } else | |
4088 | dout(10) << "reply to lookup_ino " << *in << dendl; | |
4089 | ||
4090 | mdr->tracei = in; | |
4091 | if (want_dentry) | |
4092 | mdr->tracedn = dn; | |
4093 | respond_to_request(mdr, 0); | |
4094 | } | |
4095 | } | |
4096 | ||
11fdf7f2 TL |
4097 | void Server::_lookup_snap_ino(MDRequestRef& mdr) |
4098 | { | |
9f95a23c | 4099 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 TL |
4100 | |
4101 | vinodeno_t vino; | |
4102 | vino.ino = req->get_filepath().get_ino(); | |
4103 | vino.snapid = (__u64)req->head.args.lookupino.snapid; | |
4104 | inodeno_t parent_ino = (__u64)req->head.args.lookupino.parent; | |
4105 | __u32 hash = req->head.args.lookupino.hash; | |
4106 | ||
4107 | dout(7) << "lookup_snap_ino " << vino << " parent " << parent_ino << " hash " << hash << dendl; | |
4108 | ||
4109 | CInode *in = mdcache->lookup_snap_inode(vino); | |
4110 | if (!in) { | |
4111 | in = mdcache->get_inode(vino.ino); | |
4112 | if (in) { | |
4113 | if (in->state_test(CInode::STATE_PURGING) || | |
4114 | !in->has_snap_data(vino.snapid)) { | |
4115 | if (in->is_dir() || !parent_ino) { | |
f67539c2 | 4116 | respond_to_request(mdr, -CEPHFS_ESTALE); |
11fdf7f2 TL |
4117 | return; |
4118 | } | |
4119 | in = NULL; | |
4120 | } | |
4121 | } | |
4122 | } | |
4123 | ||
4124 | if (in) { | |
4125 | dout(10) << "reply to lookup_snap_ino " << *in << dendl; | |
4126 | mdr->snapid = vino.snapid; | |
4127 | mdr->tracei = in; | |
4128 | respond_to_request(mdr, 0); | |
4129 | return; | |
4130 | } | |
4131 | ||
4132 | CInode *diri = NULL; | |
4133 | if (parent_ino) { | |
4134 | diri = mdcache->get_inode(parent_ino); | |
4135 | if (!diri) { | |
b3b6e05e | 4136 | mdcache->open_ino(parent_ino, mds->get_metadata_pool(), new C_MDS_LookupIno2(this, mdr)); |
11fdf7f2 TL |
4137 | return; |
4138 | } | |
4139 | ||
4140 | if (!diri->is_dir()) { | |
f67539c2 | 4141 | respond_to_request(mdr, -CEPHFS_EINVAL); |
11fdf7f2 TL |
4142 | return; |
4143 | } | |
4144 | ||
4145 | MutationImpl::LockOpVec lov; | |
4146 | lov.add_rdlock(&diri->dirfragtreelock); | |
4147 | if (!mds->locker->acquire_locks(mdr, lov)) | |
4148 | return; | |
4149 | ||
4150 | frag_t frag = diri->dirfragtree[hash]; | |
4151 | CDir *dir = try_open_auth_dirfrag(diri, frag, mdr); | |
4152 | if (!dir) | |
4153 | return; | |
4154 | ||
4155 | if (!dir->is_complete()) { | |
4156 | if (dir->is_frozen()) { | |
4157 | mds->locker->drop_locks(mdr.get()); | |
4158 | mdr->drop_local_auth_pins(); | |
4159 | dir->add_waiter(CDir::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
4160 | return; | |
4161 | } | |
4162 | dir->fetch(new C_MDS_RetryRequest(mdcache, mdr), true); | |
4163 | return; | |
4164 | } | |
4165 | ||
f67539c2 | 4166 | respond_to_request(mdr, -CEPHFS_ESTALE); |
11fdf7f2 | 4167 | } else { |
b3b6e05e | 4168 | mdcache->open_ino(vino.ino, mds->get_metadata_pool(), new C_MDS_LookupIno2(this, mdr), false); |
11fdf7f2 TL |
4169 | } |
4170 | } | |
4171 | ||
7c673cae FG |
4172 | void Server::_lookup_ino_2(MDRequestRef& mdr, int r) |
4173 | { | |
4174 | inodeno_t ino = mdr->client_request->get_filepath().get_ino(); | |
4175 | dout(10) << "_lookup_ino_2 " << mdr.get() << " ino " << ino << " r=" << r << dendl; | |
4176 | ||
4177 | // `r` is a rank if >=0, else an error code | |
4178 | if (r >= 0) { | |
4179 | mds_rank_t dest_rank(r); | |
4180 | if (dest_rank == mds->get_nodeid()) | |
4181 | dispatch_client_request(mdr); | |
4182 | else | |
4183 | mdcache->request_forward(mdr, dest_rank); | |
4184 | return; | |
4185 | } | |
4186 | ||
4187 | // give up | |
f67539c2 TL |
4188 | if (r == -CEPHFS_ENOENT || r == -CEPHFS_ENODATA) |
4189 | r = -CEPHFS_ESTALE; | |
7c673cae FG |
4190 | respond_to_request(mdr, r); |
4191 | } | |
4192 | ||
4193 | ||
4194 | /* This function takes responsibility for the passed mdr*/ | |
4195 | void Server::handle_client_open(MDRequestRef& mdr) | |
4196 | { | |
9f95a23c | 4197 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
4198 | dout(7) << "open on " << req->get_filepath() << dendl; |
4199 | ||
4200 | int flags = req->head.args.open.flags; | |
4201 | int cmode = ceph_flags_to_mode(flags); | |
4202 | if (cmode < 0) { | |
f67539c2 | 4203 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
4204 | return; |
4205 | } | |
4206 | ||
181888fb FG |
4207 | bool need_auth = !file_mode_is_readonly(cmode) || |
4208 | (flags & (CEPH_O_TRUNC | CEPH_O_DIRECTORY)); | |
7c673cae FG |
4209 | |
4210 | if ((cmode & CEPH_FILE_MODE_WR) && mdcache->is_readonly()) { | |
4211 | dout(7) << "read-only FS" << dendl; | |
f67539c2 | 4212 | respond_to_request(mdr, -CEPHFS_EROFS); |
7c673cae FG |
4213 | return; |
4214 | } | |
4215 | ||
9f95a23c | 4216 | CInode *cur = rdlock_path_pin_ref(mdr, need_auth); |
7c673cae FG |
4217 | if (!cur) |
4218 | return; | |
4219 | ||
4220 | if (cur->is_frozen() || cur->state_test(CInode::STATE_EXPORTINGCAPS)) { | |
11fdf7f2 | 4221 | ceph_assert(!need_auth); |
9f95a23c TL |
4222 | mdr->locking_state &= ~(MutationImpl::PATH_LOCKED | MutationImpl::ALL_LOCKED); |
4223 | CInode *cur = rdlock_path_pin_ref(mdr, true); | |
7c673cae FG |
4224 | if (!cur) |
4225 | return; | |
4226 | } | |
4227 | ||
f67539c2 | 4228 | if (!cur->is_file()) { |
7c673cae FG |
4229 | // can only open non-regular inode with mode FILE_MODE_PIN, at least for now. |
4230 | cmode = CEPH_FILE_MODE_PIN; | |
4231 | // the inode is symlink and client wants to follow it, ignore the O_TRUNC flag. | |
f67539c2 | 4232 | if (cur->is_symlink() && !(flags & CEPH_O_NOFOLLOW)) |
7c673cae FG |
4233 | flags &= ~CEPH_O_TRUNC; |
4234 | } | |
4235 | ||
4236 | dout(10) << "open flags = " << flags | |
4237 | << ", filemode = " << cmode | |
4238 | << ", need_auth = " << need_auth | |
4239 | << dendl; | |
4240 | ||
4241 | // regular file? | |
4242 | /*if (!cur->inode.is_file() && !cur->inode.is_dir()) { | |
4243 | dout(7) << "not a file or dir " << *cur << dendl; | |
f67539c2 | 4244 | respond_to_request(mdr, -CEPHFS_ENXIO); // FIXME what error do we want? |
7c673cae FG |
4245 | return; |
4246 | }*/ | |
f67539c2 | 4247 | if ((flags & CEPH_O_DIRECTORY) && !cur->is_dir() && !cur->is_symlink()) { |
7c673cae | 4248 | dout(7) << "specified O_DIRECTORY on non-directory " << *cur << dendl; |
f67539c2 | 4249 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
4250 | return; |
4251 | } | |
4252 | ||
f67539c2 | 4253 | if ((flags & CEPH_O_TRUNC) && !cur->is_file()) { |
7c673cae | 4254 | dout(7) << "specified O_TRUNC on !(file|symlink) " << *cur << dendl; |
f67539c2 TL |
4255 | // we should return -CEPHFS_EISDIR for directory, return -CEPHFS_EINVAL for other non-regular |
4256 | respond_to_request(mdr, cur->is_dir() ? -CEPHFS_EISDIR : -CEPHFS_EINVAL); | |
7c673cae FG |
4257 | return; |
4258 | } | |
4259 | ||
f67539c2 | 4260 | if (cur->get_inode()->inline_data.version != CEPH_INLINE_NONE && |
11fdf7f2 | 4261 | !mdr->session->get_connection()->has_feature(CEPH_FEATURE_MDS_INLINE_DATA)) { |
7c673cae | 4262 | dout(7) << "old client cannot open inline data file " << *cur << dendl; |
f67539c2 | 4263 | respond_to_request(mdr, -CEPHFS_EPERM); |
7c673cae FG |
4264 | return; |
4265 | } | |
4266 | ||
4267 | // snapped data is read only | |
4268 | if (mdr->snapid != CEPH_NOSNAP && | |
4269 | ((cmode & CEPH_FILE_MODE_WR) || req->may_write())) { | |
4270 | dout(7) << "snap " << mdr->snapid << " is read-only " << *cur << dendl; | |
f67539c2 | 4271 | respond_to_request(mdr, -CEPHFS_EROFS); |
7c673cae FG |
4272 | return; |
4273 | } | |
4274 | ||
9f95a23c TL |
4275 | MutationImpl::LockOpVec lov; |
4276 | ||
7c673cae FG |
4277 | unsigned mask = req->head.args.open.mask; |
4278 | if (mask) { | |
4279 | Capability *cap = cur->get_client_cap(mdr->get_client()); | |
4280 | int issued = 0; | |
4281 | if (cap && (mdr->snapid == CEPH_NOSNAP || mdr->snapid <= cap->client_follows)) | |
4282 | issued = cap->issued(); | |
4283 | // permission bits, ACL/security xattrs | |
4284 | if ((mask & CEPH_CAP_AUTH_SHARED) && (issued & CEPH_CAP_AUTH_EXCL) == 0) | |
11fdf7f2 | 4285 | lov.add_rdlock(&cur->authlock); |
7c673cae | 4286 | if ((mask & CEPH_CAP_XATTR_SHARED) && (issued & CEPH_CAP_XATTR_EXCL) == 0) |
11fdf7f2 | 4287 | lov.add_rdlock(&cur->xattrlock); |
7c673cae FG |
4288 | |
4289 | mdr->getattr_caps = mask; | |
4290 | } | |
4291 | ||
4292 | // O_TRUNC | |
4293 | if ((flags & CEPH_O_TRUNC) && !mdr->has_completed) { | |
11fdf7f2 | 4294 | ceph_assert(cur->is_auth()); |
7c673cae | 4295 | |
11fdf7f2 TL |
4296 | lov.add_xlock(&cur->filelock); |
4297 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
4298 | return; |
4299 | ||
4300 | if (!check_access(mdr, cur, MAY_WRITE)) | |
4301 | return; | |
4302 | ||
4303 | // wait for pending truncate? | |
f67539c2 | 4304 | const auto& pi = cur->get_projected_inode(); |
7c673cae FG |
4305 | if (pi->is_truncating()) { |
4306 | dout(10) << " waiting for pending truncate from " << pi->truncate_from | |
4307 | << " to " << pi->truncate_size << " to complete on " << *cur << dendl; | |
4308 | mds->locker->drop_locks(mdr.get()); | |
4309 | mdr->drop_local_auth_pins(); | |
4310 | cur->add_waiter(CInode::WAIT_TRUNC, new C_MDS_RetryRequest(mdcache, mdr)); | |
4311 | return; | |
4312 | } | |
4313 | ||
4314 | do_open_truncate(mdr, cmode); | |
4315 | return; | |
4316 | } | |
4317 | ||
4318 | // sync filelock if snapped. | |
4319 | // this makes us wait for writers to flushsnaps, ensuring we get accurate metadata, | |
4320 | // and that data itself is flushed so that we can read the snapped data off disk. | |
4321 | if (mdr->snapid != CEPH_NOSNAP && !cur->is_dir()) { | |
11fdf7f2 | 4322 | lov.add_rdlock(&cur->filelock); |
7c673cae FG |
4323 | } |
4324 | ||
11fdf7f2 | 4325 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
4326 | return; |
4327 | ||
4328 | mask = MAY_READ; | |
4329 | if (cmode & CEPH_FILE_MODE_WR) | |
4330 | mask |= MAY_WRITE; | |
4331 | if (!check_access(mdr, cur, mask)) | |
4332 | return; | |
4333 | ||
28e407b8 AA |
4334 | utime_t now = ceph_clock_now(); |
4335 | mdr->set_mds_stamp(now); | |
4336 | ||
7c673cae FG |
4337 | if (cur->is_file() || cur->is_dir()) { |
4338 | if (mdr->snapid == CEPH_NOSNAP) { | |
4339 | // register new cap | |
9f95a23c | 4340 | Capability *cap = mds->locker->issue_new_caps(cur, cmode, mdr, nullptr); |
7c673cae FG |
4341 | if (cap) |
4342 | dout(12) << "open issued caps " << ccap_string(cap->pending()) | |
4343 | << " for " << req->get_source() | |
4344 | << " on " << *cur << dendl; | |
4345 | } else { | |
4346 | int caps = ceph_caps_for_mode(cmode); | |
4347 | dout(12) << "open issued IMMUTABLE SNAP caps " << ccap_string(caps) | |
4348 | << " for " << req->get_source() | |
4349 | << " snapid " << mdr->snapid | |
4350 | << " on " << *cur << dendl; | |
4351 | mdr->snap_caps = caps; | |
4352 | } | |
4353 | } | |
4354 | ||
4355 | // increase max_size? | |
4356 | if (cmode & CEPH_FILE_MODE_WR) | |
4357 | mds->locker->check_inode_max_size(cur); | |
4358 | ||
4359 | // make sure this inode gets into the journal | |
4360 | if (cur->is_auth() && cur->last == CEPH_NOSNAP && | |
11fdf7f2 | 4361 | mdcache->open_file_table.should_log_open(cur)) { |
7c673cae FG |
4362 | EOpen *le = new EOpen(mds->mdlog); |
4363 | mdlog->start_entry(le); | |
4364 | le->add_clean_inode(cur); | |
7c673cae FG |
4365 | mdlog->submit_entry(le); |
4366 | } | |
4367 | ||
4368 | // hit pop | |
4369 | if (cmode & CEPH_FILE_MODE_WR) | |
11fdf7f2 | 4370 | mds->balancer->hit_inode(cur, META_POP_IWR); |
7c673cae | 4371 | else |
11fdf7f2 | 4372 | mds->balancer->hit_inode(cur, META_POP_IRD, |
7c673cae FG |
4373 | mdr->client_request->get_source().num()); |
4374 | ||
4375 | CDentry *dn = 0; | |
4376 | if (req->get_dentry_wanted()) { | |
11fdf7f2 | 4377 | ceph_assert(mdr->dn[0].size()); |
7c673cae FG |
4378 | dn = mdr->dn[0].back(); |
4379 | } | |
4380 | ||
4381 | mdr->tracei = cur; | |
4382 | mdr->tracedn = dn; | |
4383 | respond_to_request(mdr, 0); | |
4384 | } | |
4385 | ||
4386 | class C_MDS_openc_finish : public ServerLogContext { | |
4387 | CDentry *dn; | |
4388 | CInode *newi; | |
7c673cae | 4389 | public: |
11fdf7f2 TL |
4390 | C_MDS_openc_finish(Server *s, MDRequestRef& r, CDentry *d, CInode *ni) : |
4391 | ServerLogContext(s, r), dn(d), newi(ni) {} | |
7c673cae | 4392 | void finish(int r) override { |
11fdf7f2 | 4393 | ceph_assert(r == 0); |
7c673cae FG |
4394 | |
4395 | dn->pop_projected_linkage(); | |
4396 | ||
4397 | // dirty inode, dn, dir | |
f67539c2 | 4398 | newi->mark_dirty(mdr->ls); |
28e407b8 | 4399 | newi->mark_dirty_parent(mdr->ls, true); |
7c673cae FG |
4400 | |
4401 | mdr->apply(); | |
4402 | ||
4403 | get_mds()->locker->share_inode_max_size(newi); | |
4404 | ||
4405 | MDRequestRef null_ref; | |
4406 | get_mds()->mdcache->send_dentry_link(dn, null_ref); | |
4407 | ||
11fdf7f2 | 4408 | get_mds()->balancer->hit_inode(newi, META_POP_IWR); |
7c673cae FG |
4409 | |
4410 | server->respond_to_request(mdr, 0); | |
4411 | ||
11fdf7f2 | 4412 | ceph_assert(g_conf()->mds_kill_openc_at != 1); |
7c673cae FG |
4413 | } |
4414 | }; | |
4415 | ||
4416 | /* This function takes responsibility for the passed mdr*/ | |
4417 | void Server::handle_client_openc(MDRequestRef& mdr) | |
4418 | { | |
9f95a23c | 4419 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
4420 | client_t client = mdr->get_client(); |
4421 | ||
4422 | dout(7) << "open w/ O_CREAT on " << req->get_filepath() << dendl; | |
4423 | ||
4424 | int cmode = ceph_flags_to_mode(req->head.args.open.flags); | |
4425 | if (cmode < 0) { | |
f67539c2 | 4426 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
4427 | return; |
4428 | } | |
4429 | ||
c07f9fc5 | 4430 | bool excl = req->head.args.open.flags & CEPH_O_EXCL; |
9f95a23c TL |
4431 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true, !excl, true); |
4432 | if (!dn) | |
4433 | return; | |
c07f9fc5 | 4434 | |
9f95a23c TL |
4435 | CDentry::linkage_t *dnl = dn->get_projected_linkage(); |
4436 | if (!excl && !dnl->is_null()) { | |
4437 | // it existed. | |
4438 | mds->locker->xlock_downgrade(&dn->lock, mdr.get()); | |
4439 | ||
4440 | MutationImpl::LockOpVec lov; | |
4441 | lov.add_rdlock(&dnl->get_inode()->snaplock); | |
4442 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae | 4443 | return; |
7c673cae | 4444 | |
9f95a23c | 4445 | handle_client_open(mdr); |
7c673cae FG |
4446 | return; |
4447 | } | |
9f95a23c TL |
4448 | |
4449 | ceph_assert(dnl->is_null()); | |
4450 | ||
f67539c2 TL |
4451 | if (req->get_alternate_name().size() > alternate_name_max) { |
4452 | dout(10) << " alternate_name longer than " << alternate_name_max << dendl; | |
4453 | respond_to_request(mdr, -CEPHFS_ENAMETOOLONG); | |
4454 | return; | |
4455 | } | |
4456 | dn->set_alternate_name(req->get_alternate_name()); | |
4457 | ||
7c673cae FG |
4458 | // set layout |
4459 | file_layout_t layout; | |
9f95a23c TL |
4460 | if (mdr->dir_layout != file_layout_t()) |
4461 | layout = mdr->dir_layout; | |
7c673cae FG |
4462 | else |
4463 | layout = mdcache->default_file_layout; | |
4464 | ||
4465 | // What kind of client caps are required to complete this operation | |
4466 | uint64_t access = MAY_WRITE; | |
4467 | ||
4468 | const auto default_layout = layout; | |
4469 | ||
4470 | // fill in any special params from client | |
4471 | if (req->head.args.open.stripe_unit) | |
4472 | layout.stripe_unit = req->head.args.open.stripe_unit; | |
4473 | if (req->head.args.open.stripe_count) | |
4474 | layout.stripe_count = req->head.args.open.stripe_count; | |
4475 | if (req->head.args.open.object_size) | |
4476 | layout.object_size = req->head.args.open.object_size; | |
4477 | if (req->get_connection()->has_feature(CEPH_FEATURE_CREATEPOOLID) && | |
4478 | (__s32)req->head.args.open.pool >= 0) { | |
4479 | layout.pool_id = req->head.args.open.pool; | |
4480 | ||
4481 | // make sure we have as new a map as the client | |
4482 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
4483 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
4484 | return; | |
4485 | } | |
4486 | } | |
4487 | ||
4488 | // If client doesn't have capability to modify layout pools, then | |
4489 | // only permit this request if the requested pool matches what the | |
4490 | // file would have inherited anyway from its parent. | |
4491 | if (default_layout != layout) { | |
4492 | access |= MAY_SET_VXATTR; | |
4493 | } | |
4494 | ||
4495 | if (!layout.is_valid()) { | |
4496 | dout(10) << " invalid initial file layout" << dendl; | |
f67539c2 | 4497 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
4498 | return; |
4499 | } | |
4500 | if (!mds->mdsmap->is_data_pool(layout.pool_id)) { | |
4501 | dout(10) << " invalid data pool " << layout.pool_id << dendl; | |
f67539c2 | 4502 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
4503 | return; |
4504 | } | |
4505 | ||
c07f9fc5 | 4506 | // created null dn. |
7c673cae FG |
4507 | CDir *dir = dn->get_dir(); |
4508 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
4509 | if (!check_access(mdr, diri, access)) |
4510 | return; | |
7c673cae FG |
4511 | if (!check_fragment_space(mdr, dir)) |
4512 | return; | |
20effc67 TL |
4513 | if (!check_dir_max_entries(mdr, dir)) |
4514 | return; | |
7c673cae | 4515 | |
9f95a23c TL |
4516 | if (mdr->dn[0].size() == 1) |
4517 | mds->locker->create_lock_cache(mdr, diri, &mdr->dir_layout); | |
7c673cae | 4518 | |
7c673cae | 4519 | // create inode. |
f67539c2 TL |
4520 | CInode *newi = prepare_new_inode(mdr, dn->get_dir(), inodeno_t(req->head.ino), |
4521 | req->head.args.open.mode | S_IFREG, &layout); | |
4522 | ceph_assert(newi); | |
7c673cae FG |
4523 | |
4524 | // it's a file. | |
f67539c2 | 4525 | dn->push_projected_linkage(newi); |
7c673cae | 4526 | |
f67539c2 TL |
4527 | auto _inode = newi->_get_inode(); |
4528 | _inode->version = dn->pre_dirty(); | |
7c673cae | 4529 | if (layout.pool_id != mdcache->default_file_layout.pool_id) |
f67539c2 TL |
4530 | _inode->add_old_pool(mdcache->default_file_layout.pool_id); |
4531 | _inode->update_backtrace(); | |
4532 | _inode->rstat.rfiles = 1; | |
4533 | _inode->accounted_rstat = _inode->rstat; | |
a8e16298 TL |
4534 | |
4535 | SnapRealm *realm = diri->find_snaprealm(); | |
11fdf7f2 TL |
4536 | snapid_t follows = mdcache->get_global_snaprealm()->get_newest_seq(); |
4537 | ceph_assert(follows >= realm->get_newest_seq()); | |
a8e16298 TL |
4538 | |
4539 | ceph_assert(dn->first == follows+1); | |
f67539c2 | 4540 | newi->first = dn->first; |
a8e16298 TL |
4541 | |
4542 | // do the open | |
f67539c2 TL |
4543 | Capability *cap = mds->locker->issue_new_caps(newi, cmode, mdr, realm); |
4544 | newi->authlock.set_state(LOCK_EXCL); | |
4545 | newi->xattrlock.set_state(LOCK_EXCL); | |
a8e16298 TL |
4546 | |
4547 | if (cap && (cmode & CEPH_FILE_MODE_WR)) { | |
f67539c2 TL |
4548 | _inode->client_ranges[client].range.first = 0; |
4549 | _inode->client_ranges[client].range.last = _inode->layout.stripe_unit; | |
4550 | _inode->client_ranges[client].follows = follows; | |
4551 | newi->mark_clientwriteable(); | |
a8e16298 | 4552 | cap->mark_clientwriteable(); |
7c673cae | 4553 | } |
7c673cae FG |
4554 | |
4555 | // prepare finisher | |
4556 | mdr->ls = mdlog->get_current_segment(); | |
4557 | EUpdate *le = new EUpdate(mdlog, "openc"); | |
4558 | mdlog->start_entry(le); | |
4559 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
4560 | journal_allocated_inos(mdr, &le->metablob); | |
f67539c2 TL |
4561 | mdcache->predirty_journal_parents(mdr, &le->metablob, newi, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); |
4562 | le->metablob.add_primary_dentry(dn, newi, true, true, true); | |
7c673cae | 4563 | |
7c673cae | 4564 | // make sure this inode gets into the journal |
f67539c2 | 4565 | le->metablob.add_opened_ino(newi->ino()); |
7c673cae | 4566 | |
f67539c2 | 4567 | C_MDS_openc_finish *fin = new C_MDS_openc_finish(this, mdr, dn, newi); |
7c673cae | 4568 | |
9f95a23c TL |
4569 | if (mdr->session->info.has_feature(CEPHFS_FEATURE_DELEG_INO)) { |
4570 | openc_response_t ocresp; | |
4571 | ||
4572 | dout(10) << "adding created_ino and delegated_inos" << dendl; | |
f67539c2 | 4573 | ocresp.created_ino = _inode->ino; |
9f95a23c TL |
4574 | |
4575 | if (delegate_inos_pct && !req->is_queued_for_replay()) { | |
4576 | // Try to delegate some prealloc_inos to the client, if it's down to half the max | |
4577 | unsigned frac = 100 / delegate_inos_pct; | |
4578 | if (mdr->session->delegated_inos.size() < (unsigned)g_conf()->mds_client_prealloc_inos / frac / 2) | |
4579 | mdr->session->delegate_inos(g_conf()->mds_client_prealloc_inos / frac, ocresp.delegated_inos); | |
4580 | } | |
4581 | ||
4582 | encode(ocresp, mdr->reply_extra_bl); | |
4583 | } else if (mdr->client_request->get_connection()->has_feature(CEPH_FEATURE_REPLY_CREATE_INODE)) { | |
7c673cae FG |
4584 | dout(10) << "adding ino to reply to indicate inode was created" << dendl; |
4585 | // add the file created flag onto the reply if create_flags features is supported | |
f67539c2 | 4586 | encode(newi->ino(), mdr->reply_extra_bl); |
7c673cae FG |
4587 | } |
4588 | ||
f67539c2 | 4589 | journal_and_reply(mdr, newi, dn, le, fin); |
7c673cae FG |
4590 | |
4591 | // We hit_dir (via hit_inode) in our finish callback, but by then we might | |
4592 | // have overshot the split size (multiple opencs in flight), so here is | |
4593 | // an early chance to split the dir if this openc makes it oversized. | |
4594 | mds->balancer->maybe_fragment(dir, false); | |
4595 | } | |
4596 | ||
4597 | ||
4598 | ||
4599 | void Server::handle_client_readdir(MDRequestRef& mdr) | |
4600 | { | |
9f95a23c | 4601 | const cref_t<MClientRequest> &req = mdr->client_request; |
adb31ebb | 4602 | Session *session = mds->get_session(req); |
7c673cae | 4603 | client_t client = req->get_source().num(); |
11fdf7f2 | 4604 | MutationImpl::LockOpVec lov; |
9f95a23c | 4605 | CInode *diri = rdlock_path_pin_ref(mdr, false, true); |
7c673cae FG |
4606 | if (!diri) return; |
4607 | ||
4608 | // it's a directory, right? | |
4609 | if (!diri->is_dir()) { | |
4610 | // not a dir | |
f67539c2 TL |
4611 | dout(10) << "reply to " << *req << " readdir -CEPHFS_ENOTDIR" << dendl; |
4612 | respond_to_request(mdr, -CEPHFS_ENOTDIR); | |
7c673cae FG |
4613 | return; |
4614 | } | |
4615 | ||
adb31ebb TL |
4616 | auto num_caps = session->get_num_caps(); |
4617 | auto session_cap_acquisition = session->get_cap_acquisition(); | |
4618 | ||
4619 | if (num_caps > static_cast<uint64_t>(max_caps_per_client * max_caps_throttle_ratio) && session_cap_acquisition >= cap_acquisition_throttle) { | |
4620 | dout(20) << "readdir throttled. max_caps_per_client: " << max_caps_per_client << " num_caps: " << num_caps | |
4621 | << " session_cap_acquistion: " << session_cap_acquisition << " cap_acquisition_throttle: " << cap_acquisition_throttle << dendl; | |
4622 | if (logger) | |
4623 | logger->inc(l_mdss_cap_acquisition_throttle); | |
4624 | ||
4625 | mds->timer.add_event_after(caps_throttle_retry_request_timeout, new C_MDS_RetryRequest(mdcache, mdr)); | |
4626 | return; | |
4627 | } | |
4628 | ||
11fdf7f2 TL |
4629 | lov.add_rdlock(&diri->filelock); |
4630 | lov.add_rdlock(&diri->dirfragtreelock); | |
7c673cae | 4631 | |
11fdf7f2 | 4632 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
4633 | return; |
4634 | ||
4635 | if (!check_access(mdr, diri, MAY_READ)) | |
4636 | return; | |
4637 | ||
4638 | // which frag? | |
4639 | frag_t fg = (__u32)req->head.args.readdir.frag; | |
4640 | unsigned req_flags = (__u32)req->head.args.readdir.flags; | |
4641 | string offset_str = req->get_path2(); | |
4642 | ||
4643 | __u32 offset_hash = 0; | |
4644 | if (!offset_str.empty()) | |
4645 | offset_hash = ceph_frag_value(diri->hash_dentry_name(offset_str)); | |
4646 | else | |
4647 | offset_hash = (__u32)req->head.args.readdir.offset_hash; | |
4648 | ||
4649 | dout(10) << " frag " << fg << " offset '" << offset_str << "'" | |
4650 | << " offset_hash " << offset_hash << " flags " << req_flags << dendl; | |
4651 | ||
4652 | // does the frag exist? | |
4653 | if (diri->dirfragtree[fg.value()] != fg) { | |
4654 | frag_t newfg; | |
4655 | if (req_flags & CEPH_READDIR_REPLY_BITFLAGS) { | |
4656 | if (fg.contains((unsigned)offset_hash)) { | |
4657 | newfg = diri->dirfragtree[offset_hash]; | |
4658 | } else { | |
4659 | // client actually wants next frag | |
4660 | newfg = diri->dirfragtree[fg.value()]; | |
4661 | } | |
4662 | } else { | |
4663 | offset_str.clear(); | |
4664 | newfg = diri->dirfragtree[fg.value()]; | |
4665 | } | |
4666 | dout(10) << " adjust frag " << fg << " -> " << newfg << " " << diri->dirfragtree << dendl; | |
4667 | fg = newfg; | |
4668 | } | |
4669 | ||
4670 | CDir *dir = try_open_auth_dirfrag(diri, fg, mdr); | |
4671 | if (!dir) return; | |
4672 | ||
4673 | // ok! | |
4674 | dout(10) << "handle_client_readdir on " << *dir << dendl; | |
11fdf7f2 | 4675 | ceph_assert(dir->is_auth()); |
7c673cae FG |
4676 | |
4677 | if (!dir->is_complete()) { | |
4678 | if (dir->is_frozen()) { | |
4679 | dout(7) << "dir is frozen " << *dir << dendl; | |
4680 | mds->locker->drop_locks(mdr.get()); | |
4681 | mdr->drop_local_auth_pins(); | |
4682 | dir->add_waiter(CDir::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
4683 | return; | |
4684 | } | |
4685 | // fetch | |
4686 | dout(10) << " incomplete dir contents for readdir on " << *dir << ", fetching" << dendl; | |
4687 | dir->fetch(new C_MDS_RetryRequest(mdcache, mdr), true); | |
4688 | return; | |
4689 | } | |
4690 | ||
4691 | #ifdef MDS_VERIFY_FRAGSTAT | |
4692 | dir->verify_fragstat(); | |
4693 | #endif | |
4694 | ||
4695 | utime_t now = ceph_clock_now(); | |
4696 | mdr->set_mds_stamp(now); | |
4697 | ||
4698 | snapid_t snapid = mdr->snapid; | |
4699 | dout(10) << "snapid " << snapid << dendl; | |
4700 | ||
4701 | SnapRealm *realm = diri->find_snaprealm(); | |
4702 | ||
4703 | unsigned max = req->head.args.readdir.max_entries; | |
4704 | if (!max) | |
4705 | max = dir->get_num_any(); // whatever, something big. | |
4706 | unsigned max_bytes = req->head.args.readdir.max_bytes; | |
4707 | if (!max_bytes) | |
4708 | // make sure at least one item can be encoded | |
11fdf7f2 | 4709 | max_bytes = (512 << 10) + g_conf()->mds_max_xattr_pairs_size; |
7c673cae FG |
4710 | |
4711 | // start final blob | |
4712 | bufferlist dirbl; | |
11fdf7f2 TL |
4713 | DirStat ds; |
4714 | ds.frag = dir->get_frag(); | |
4715 | ds.auth = dir->get_dir_auth().first; | |
f91f0fd5 | 4716 | if (dir->is_auth() && !forward_all_requests_to_auth) |
11fdf7f2 TL |
4717 | dir->get_dist_spec(ds.dist, mds->get_nodeid()); |
4718 | ||
4719 | dir->encode_dirstat(dirbl, mdr->session->info, ds); | |
7c673cae FG |
4720 | |
4721 | // count bytes available. | |
4722 | // this isn't perfect, but we should capture the main variable/unbounded size items! | |
4723 | int front_bytes = dirbl.length() + sizeof(__u32) + sizeof(__u8)*2; | |
4724 | int bytes_left = max_bytes - front_bytes; | |
4725 | bytes_left -= realm->get_snap_trace().length(); | |
4726 | ||
4727 | // build dir contents | |
4728 | bufferlist dnbl; | |
4729 | __u32 numfiles = 0; | |
4730 | bool start = !offset_hash && offset_str.empty(); | |
7c673cae FG |
4731 | // skip all dns < dentry_key_t(snapid, offset_str, offset_hash) |
4732 | dentry_key_t skip_key(snapid, offset_str.c_str(), offset_hash); | |
181888fb FG |
4733 | auto it = start ? dir->begin() : dir->lower_bound(skip_key); |
4734 | bool end = (it == dir->end()); | |
4735 | for (; !end && numfiles < max; end = (it == dir->end())) { | |
7c673cae FG |
4736 | CDentry *dn = it->second; |
4737 | ++it; | |
4738 | ||
4739 | if (dn->state_test(CDentry::STATE_PURGING)) | |
4740 | continue; | |
4741 | ||
4742 | bool dnp = dn->use_projected(client, mdr); | |
4743 | CDentry::linkage_t *dnl = dnp ? dn->get_projected_linkage() : dn->get_linkage(); | |
4744 | ||
4745 | if (dnl->is_null()) | |
4746 | continue; | |
4747 | ||
4748 | if (dn->last < snapid || dn->first > snapid) { | |
4749 | dout(20) << "skipping non-overlapping snap " << *dn << dendl; | |
4750 | continue; | |
4751 | } | |
4752 | ||
4753 | if (!start) { | |
4754 | dentry_key_t offset_key(dn->last, offset_str.c_str(), offset_hash); | |
4755 | if (!(offset_key < dn->key())) | |
4756 | continue; | |
4757 | } | |
4758 | ||
4759 | CInode *in = dnl->get_inode(); | |
4760 | ||
4761 | if (in && in->ino() == CEPH_INO_CEPH) | |
4762 | continue; | |
4763 | ||
4764 | // remote link? | |
4765 | // better for the MDS to do the work, if we think the client will stat any of these files. | |
4766 | if (dnl->is_remote() && !in) { | |
4767 | in = mdcache->get_inode(dnl->get_remote_ino()); | |
4768 | if (in) { | |
4769 | dn->link_remote(dnl, in); | |
4770 | } else if (dn->state_test(CDentry::STATE_BADREMOTEINO)) { | |
4771 | dout(10) << "skipping bad remote ino on " << *dn << dendl; | |
4772 | continue; | |
4773 | } else { | |
4774 | // touch everything i _do_ have | |
94b18763 FG |
4775 | for (auto &p : *dir) { |
4776 | if (!p.second->get_linkage()->is_null()) | |
4777 | mdcache->lru.lru_touch(p.second); | |
4778 | } | |
7c673cae FG |
4779 | |
4780 | // already issued caps and leases, reply immediately. | |
4781 | if (dnbl.length() > 0) { | |
4782 | mdcache->open_remote_dentry(dn, dnp, new C_MDSInternalNoop); | |
4783 | dout(10) << " open remote dentry after caps were issued, stopping at " | |
4784 | << dnbl.length() << " < " << bytes_left << dendl; | |
4785 | break; | |
4786 | } | |
4787 | ||
4788 | mds->locker->drop_locks(mdr.get()); | |
4789 | mdr->drop_local_auth_pins(); | |
4790 | mdcache->open_remote_dentry(dn, dnp, new C_MDS_RetryRequest(mdcache, mdr)); | |
4791 | return; | |
4792 | } | |
4793 | } | |
11fdf7f2 | 4794 | ceph_assert(in); |
7c673cae | 4795 | |
94b18763 | 4796 | if ((int)(dnbl.length() + dn->get_name().length() + sizeof(__u32) + sizeof(LeaseStat)) > bytes_left) { |
7c673cae FG |
4797 | dout(10) << " ran out of room, stopping at " << dnbl.length() << " < " << bytes_left << dendl; |
4798 | break; | |
4799 | } | |
4800 | ||
4801 | unsigned start_len = dnbl.length(); | |
4802 | ||
4803 | // dentry | |
4804 | dout(12) << "including dn " << *dn << dendl; | |
11fdf7f2 | 4805 | encode(dn->get_name(), dnbl); |
2a845540 | 4806 | mds->locker->issue_client_lease(dn, in, mdr, now, dnbl); |
7c673cae FG |
4807 | |
4808 | // inode | |
4809 | dout(12) << "including inode " << *in << dendl; | |
4810 | int r = in->encode_inodestat(dnbl, mdr->session, realm, snapid, bytes_left - (int)dnbl.length()); | |
4811 | if (r < 0) { | |
4812 | // chop off dn->name, lease | |
4813 | dout(10) << " ran out of room, stopping at " << start_len << " < " << bytes_left << dendl; | |
4814 | bufferlist keep; | |
4815 | keep.substr_of(dnbl, 0, start_len); | |
4816 | dnbl.swap(keep); | |
4817 | break; | |
4818 | } | |
11fdf7f2 | 4819 | ceph_assert(r >= 0); |
7c673cae FG |
4820 | numfiles++; |
4821 | ||
4822 | // touch dn | |
4823 | mdcache->lru.lru_touch(dn); | |
4824 | } | |
4825 | ||
adb31ebb TL |
4826 | session->touch_readdir_cap(numfiles); |
4827 | ||
7c673cae FG |
4828 | __u16 flags = 0; |
4829 | if (end) { | |
4830 | flags = CEPH_READDIR_FRAG_END; | |
4831 | if (start) | |
4832 | flags |= CEPH_READDIR_FRAG_COMPLETE; // FIXME: what purpose does this serve | |
4833 | } | |
4834 | // client only understand END and COMPLETE flags ? | |
4835 | if (req_flags & CEPH_READDIR_REPLY_BITFLAGS) { | |
4836 | flags |= CEPH_READDIR_HASH_ORDER | CEPH_READDIR_OFFSET_HASH; | |
4837 | } | |
4838 | ||
4839 | // finish final blob | |
11fdf7f2 TL |
4840 | encode(numfiles, dirbl); |
4841 | encode(flags, dirbl); | |
7c673cae FG |
4842 | dirbl.claim_append(dnbl); |
4843 | ||
4844 | // yay, reply | |
4845 | dout(10) << "reply to " << *req << " readdir num=" << numfiles | |
4846 | << " bytes=" << dirbl.length() | |
4847 | << " start=" << (int)start | |
4848 | << " end=" << (int)end | |
4849 | << dendl; | |
4850 | mdr->reply_extra_bl = dirbl; | |
4851 | ||
4852 | // bump popularity. NOTE: this doesn't quite capture it. | |
522d829b | 4853 | mds->balancer->hit_dir(dir, META_POP_READDIR, -1, numfiles); |
7c673cae FG |
4854 | |
4855 | // reply | |
4856 | mdr->tracei = diri; | |
4857 | respond_to_request(mdr, 0); | |
4858 | } | |
4859 | ||
4860 | ||
4861 | ||
4862 | // =============================================================================== | |
4863 | // INODE UPDATES | |
4864 | ||
4865 | ||
4866 | /* | |
4867 | * finisher for basic inode updates | |
4868 | */ | |
4869 | class C_MDS_inode_update_finish : public ServerLogContext { | |
4870 | CInode *in; | |
adb31ebb | 4871 | bool truncating_smaller, changed_ranges, adjust_realm; |
7c673cae FG |
4872 | public: |
4873 | C_MDS_inode_update_finish(Server *s, MDRequestRef& r, CInode *i, | |
adb31ebb | 4874 | bool sm=false, bool cr=false, bool ar=false) : |
11fdf7f2 | 4875 | ServerLogContext(s, r), in(i), |
adb31ebb | 4876 | truncating_smaller(sm), changed_ranges(cr), adjust_realm(ar) { } |
7c673cae | 4877 | void finish(int r) override { |
11fdf7f2 | 4878 | ceph_assert(r == 0); |
7c673cae | 4879 | |
adb31ebb TL |
4880 | int snap_op = (in->snaprealm ? CEPH_SNAP_OP_UPDATE : CEPH_SNAP_OP_SPLIT); |
4881 | ||
7c673cae | 4882 | // apply |
7c673cae FG |
4883 | mdr->apply(); |
4884 | ||
11fdf7f2 TL |
4885 | MDSRank *mds = get_mds(); |
4886 | ||
7c673cae | 4887 | // notify any clients |
f67539c2 | 4888 | if (truncating_smaller && in->get_inode()->is_truncating()) { |
11fdf7f2 TL |
4889 | mds->locker->issue_truncate(in); |
4890 | mds->mdcache->truncate_inode(in, mdr->ls); | |
4891 | } | |
4892 | ||
adb31ebb TL |
4893 | if (adjust_realm) { |
4894 | mds->mdcache->send_snap_update(in, 0, snap_op); | |
4895 | mds->mdcache->do_realm_invalidate_and_update_notify(in, snap_op); | |
7c673cae FG |
4896 | } |
4897 | ||
11fdf7f2 | 4898 | get_mds()->balancer->hit_inode(in, META_POP_IWR); |
7c673cae FG |
4899 | |
4900 | server->respond_to_request(mdr, 0); | |
4901 | ||
4902 | if (changed_ranges) | |
4903 | get_mds()->locker->share_inode_max_size(in); | |
4904 | } | |
4905 | }; | |
4906 | ||
4907 | void Server::handle_client_file_setlock(MDRequestRef& mdr) | |
4908 | { | |
9f95a23c | 4909 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 | 4910 | MutationImpl::LockOpVec lov; |
7c673cae FG |
4911 | |
4912 | // get the inode to operate on, and set up any locks needed for that | |
9f95a23c | 4913 | CInode *cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
4914 | if (!cur) |
4915 | return; | |
4916 | ||
11fdf7f2 | 4917 | lov.add_xlock(&cur->flocklock); |
7c673cae FG |
4918 | /* acquire_locks will return true if it gets the locks. If it fails, |
4919 | it will redeliver this request at a later date, so drop the request. | |
4920 | */ | |
11fdf7f2 | 4921 | if (!mds->locker->acquire_locks(mdr, lov)) { |
7c673cae FG |
4922 | dout(10) << "handle_client_file_setlock could not get locks!" << dendl; |
4923 | return; | |
4924 | } | |
4925 | ||
4926 | // copy the lock change into a ceph_filelock so we can store/apply it | |
4927 | ceph_filelock set_lock; | |
4928 | set_lock.start = req->head.args.filelock_change.start; | |
4929 | set_lock.length = req->head.args.filelock_change.length; | |
4930 | set_lock.client = req->get_orig_source().num(); | |
4931 | set_lock.owner = req->head.args.filelock_change.owner; | |
4932 | set_lock.pid = req->head.args.filelock_change.pid; | |
4933 | set_lock.type = req->head.args.filelock_change.type; | |
4934 | bool will_wait = req->head.args.filelock_change.wait; | |
4935 | ||
4936 | dout(10) << "handle_client_file_setlock: " << set_lock << dendl; | |
4937 | ||
4938 | ceph_lock_state_t *lock_state = NULL; | |
4939 | bool interrupt = false; | |
4940 | ||
4941 | // get the appropriate lock state | |
4942 | switch (req->head.args.filelock_change.rule) { | |
4943 | case CEPH_LOCK_FLOCK_INTR: | |
4944 | interrupt = true; | |
4945 | // fall-thru | |
4946 | case CEPH_LOCK_FLOCK: | |
4947 | lock_state = cur->get_flock_lock_state(); | |
4948 | break; | |
4949 | ||
4950 | case CEPH_LOCK_FCNTL_INTR: | |
4951 | interrupt = true; | |
4952 | // fall-thru | |
4953 | case CEPH_LOCK_FCNTL: | |
4954 | lock_state = cur->get_fcntl_lock_state(); | |
4955 | break; | |
4956 | ||
4957 | default: | |
4958 | dout(10) << "got unknown lock type " << set_lock.type | |
4959 | << ", dropping request!" << dendl; | |
f67539c2 | 4960 | respond_to_request(mdr, -CEPHFS_EOPNOTSUPP); |
7c673cae FG |
4961 | return; |
4962 | } | |
4963 | ||
4964 | dout(10) << " state prior to lock change: " << *lock_state << dendl; | |
4965 | if (CEPH_LOCK_UNLOCK == set_lock.type) { | |
4966 | list<ceph_filelock> activated_locks; | |
11fdf7f2 | 4967 | MDSContext::vec waiters; |
7c673cae FG |
4968 | if (lock_state->is_waiting(set_lock)) { |
4969 | dout(10) << " unlock removing waiting lock " << set_lock << dendl; | |
4970 | lock_state->remove_waiting(set_lock); | |
4971 | cur->take_waiting(CInode::WAIT_FLOCK, waiters); | |
4972 | } else if (!interrupt) { | |
4973 | dout(10) << " unlock attempt on " << set_lock << dendl; | |
4974 | lock_state->remove_lock(set_lock, activated_locks); | |
4975 | cur->take_waiting(CInode::WAIT_FLOCK, waiters); | |
4976 | } | |
4977 | mds->queue_waiters(waiters); | |
4978 | ||
4979 | respond_to_request(mdr, 0); | |
4980 | } else { | |
4981 | dout(10) << " lock attempt on " << set_lock << dendl; | |
4982 | bool deadlock = false; | |
4983 | if (mdr->more()->flock_was_waiting && | |
4984 | !lock_state->is_waiting(set_lock)) { | |
4985 | dout(10) << " was waiting for lock but not anymore, must have been canceled " << set_lock << dendl; | |
f67539c2 | 4986 | respond_to_request(mdr, -CEPHFS_EINTR); |
7c673cae FG |
4987 | } else if (!lock_state->add_lock(set_lock, will_wait, mdr->more()->flock_was_waiting, &deadlock)) { |
4988 | dout(10) << " it failed on this attempt" << dendl; | |
4989 | // couldn't set lock right now | |
4990 | if (deadlock) { | |
f67539c2 | 4991 | respond_to_request(mdr, -CEPHFS_EDEADLK); |
7c673cae | 4992 | } else if (!will_wait) { |
f67539c2 | 4993 | respond_to_request(mdr, -CEPHFS_EWOULDBLOCK); |
7c673cae FG |
4994 | } else { |
4995 | dout(10) << " added to waiting list" << dendl; | |
11fdf7f2 | 4996 | ceph_assert(lock_state->is_waiting(set_lock)); |
7c673cae FG |
4997 | mdr->more()->flock_was_waiting = true; |
4998 | mds->locker->drop_locks(mdr.get()); | |
4999 | mdr->drop_local_auth_pins(); | |
1adf2230 AA |
5000 | mdr->mark_event("failed to add lock, waiting"); |
5001 | mdr->mark_nowarn(); | |
7c673cae FG |
5002 | cur->add_waiter(CInode::WAIT_FLOCK, new C_MDS_RetryRequest(mdcache, mdr)); |
5003 | } | |
5004 | } else | |
5005 | respond_to_request(mdr, 0); | |
5006 | } | |
5007 | dout(10) << " state after lock change: " << *lock_state << dendl; | |
5008 | } | |
5009 | ||
5010 | void Server::handle_client_file_readlock(MDRequestRef& mdr) | |
5011 | { | |
9f95a23c | 5012 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 | 5013 | MutationImpl::LockOpVec lov; |
7c673cae FG |
5014 | |
5015 | // get the inode to operate on, and set up any locks needed for that | |
9f95a23c | 5016 | CInode *cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
5017 | if (!cur) |
5018 | return; | |
5019 | ||
5020 | /* acquire_locks will return true if it gets the locks. If it fails, | |
5021 | it will redeliver this request at a later date, so drop the request. | |
5022 | */ | |
11fdf7f2 TL |
5023 | lov.add_rdlock(&cur->flocklock); |
5024 | if (!mds->locker->acquire_locks(mdr, lov)) { | |
7c673cae FG |
5025 | dout(10) << "handle_client_file_readlock could not get locks!" << dendl; |
5026 | return; | |
5027 | } | |
5028 | ||
5029 | // copy the lock change into a ceph_filelock so we can store/apply it | |
5030 | ceph_filelock checking_lock; | |
5031 | checking_lock.start = req->head.args.filelock_change.start; | |
5032 | checking_lock.length = req->head.args.filelock_change.length; | |
5033 | checking_lock.client = req->get_orig_source().num(); | |
5034 | checking_lock.owner = req->head.args.filelock_change.owner; | |
5035 | checking_lock.pid = req->head.args.filelock_change.pid; | |
5036 | checking_lock.type = req->head.args.filelock_change.type; | |
5037 | ||
5038 | // get the appropriate lock state | |
5039 | ceph_lock_state_t *lock_state = NULL; | |
5040 | switch (req->head.args.filelock_change.rule) { | |
5041 | case CEPH_LOCK_FLOCK: | |
5042 | lock_state = cur->get_flock_lock_state(); | |
5043 | break; | |
5044 | ||
5045 | case CEPH_LOCK_FCNTL: | |
5046 | lock_state = cur->get_fcntl_lock_state(); | |
5047 | break; | |
5048 | ||
5049 | default: | |
5050 | dout(10) << "got unknown lock type " << checking_lock.type << dendl; | |
f67539c2 | 5051 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5052 | return; |
5053 | } | |
5054 | lock_state->look_for_lock(checking_lock); | |
5055 | ||
5056 | bufferlist lock_bl; | |
11fdf7f2 | 5057 | encode(checking_lock, lock_bl); |
7c673cae FG |
5058 | |
5059 | mdr->reply_extra_bl = lock_bl; | |
5060 | respond_to_request(mdr, 0); | |
5061 | } | |
5062 | ||
5063 | void Server::handle_client_setattr(MDRequestRef& mdr) | |
5064 | { | |
9f95a23c | 5065 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 | 5066 | MutationImpl::LockOpVec lov; |
9f95a23c | 5067 | CInode *cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
5068 | if (!cur) return; |
5069 | ||
5070 | if (mdr->snapid != CEPH_NOSNAP) { | |
f67539c2 | 5071 | respond_to_request(mdr, -CEPHFS_EROFS); |
7c673cae FG |
5072 | return; |
5073 | } | |
5074 | if (cur->ino() < MDS_INO_SYSTEM_BASE && !cur->is_base()) { | |
f67539c2 | 5075 | respond_to_request(mdr, -CEPHFS_EPERM); |
7c673cae FG |
5076 | return; |
5077 | } | |
5078 | ||
5079 | __u32 mask = req->head.args.setattr.mask; | |
5080 | __u32 access_mask = MAY_WRITE; | |
5081 | ||
5082 | // xlock inode | |
5083 | if (mask & (CEPH_SETATTR_MODE|CEPH_SETATTR_UID|CEPH_SETATTR_GID|CEPH_SETATTR_BTIME|CEPH_SETATTR_KILL_SGUID)) | |
11fdf7f2 | 5084 | lov.add_xlock(&cur->authlock); |
7c673cae | 5085 | if (mask & (CEPH_SETATTR_MTIME|CEPH_SETATTR_ATIME|CEPH_SETATTR_SIZE)) |
11fdf7f2 | 5086 | lov.add_xlock(&cur->filelock); |
7c673cae | 5087 | if (mask & CEPH_SETATTR_CTIME) |
11fdf7f2 | 5088 | lov.add_wrlock(&cur->versionlock); |
7c673cae | 5089 | |
11fdf7f2 | 5090 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
5091 | return; |
5092 | ||
f67539c2 | 5093 | if ((mask & CEPH_SETATTR_UID) && (cur->get_inode()->uid != req->head.args.setattr.uid)) |
7c673cae FG |
5094 | access_mask |= MAY_CHOWN; |
5095 | ||
f67539c2 | 5096 | if ((mask & CEPH_SETATTR_GID) && (cur->get_inode()->gid != req->head.args.setattr.gid)) |
7c673cae FG |
5097 | access_mask |= MAY_CHGRP; |
5098 | ||
5099 | if (!check_access(mdr, cur, access_mask)) | |
5100 | return; | |
5101 | ||
5102 | // trunc from bigger -> smaller? | |
f67539c2 | 5103 | const auto& pip = cur->get_projected_inode(); |
7c673cae | 5104 | |
94b18763 | 5105 | uint64_t old_size = std::max<uint64_t>(pip->size, req->head.args.setattr.old_size); |
7c673cae | 5106 | |
f67539c2 | 5107 | // CEPHFS_ENOSPC on growing file while full, but allow shrinks |
7c673cae | 5108 | if (is_full && req->head.args.setattr.size > old_size) { |
f67539c2 TL |
5109 | dout(20) << __func__ << ": full, responding CEPHFS_ENOSPC to setattr with larger size" << dendl; |
5110 | respond_to_request(mdr, -CEPHFS_ENOSPC); | |
7c673cae FG |
5111 | return; |
5112 | } | |
5113 | ||
5114 | bool truncating_smaller = false; | |
5115 | if (mask & CEPH_SETATTR_SIZE) { | |
5116 | truncating_smaller = req->head.args.setattr.size < old_size; | |
94b18763 FG |
5117 | if (truncating_smaller && pip->is_truncating()) { |
5118 | dout(10) << " waiting for pending truncate from " << pip->truncate_from | |
5119 | << " to " << pip->truncate_size << " to complete on " << *cur << dendl; | |
7c673cae FG |
5120 | mds->locker->drop_locks(mdr.get()); |
5121 | mdr->drop_local_auth_pins(); | |
5122 | cur->add_waiter(CInode::WAIT_TRUNC, new C_MDS_RetryRequest(mdcache, mdr)); | |
5123 | return; | |
5124 | } | |
5125 | } | |
5126 | ||
5127 | bool changed_ranges = false; | |
5128 | ||
5129 | // project update | |
5130 | mdr->ls = mdlog->get_current_segment(); | |
5131 | EUpdate *le = new EUpdate(mdlog, "setattr"); | |
5132 | mdlog->start_entry(le); | |
5133 | ||
f67539c2 | 5134 | auto pi = cur->project_inode(mdr); |
7c673cae FG |
5135 | |
5136 | if (mask & CEPH_SETATTR_UID) | |
f67539c2 | 5137 | pi.inode->uid = req->head.args.setattr.uid; |
7c673cae | 5138 | if (mask & CEPH_SETATTR_GID) |
f67539c2 | 5139 | pi.inode->gid = req->head.args.setattr.gid; |
7c673cae FG |
5140 | |
5141 | if (mask & CEPH_SETATTR_MODE) | |
f67539c2 | 5142 | pi.inode->mode = (pi.inode->mode & ~07777) | (req->head.args.setattr.mode & 07777); |
7c673cae | 5143 | else if ((mask & (CEPH_SETATTR_UID|CEPH_SETATTR_GID|CEPH_SETATTR_KILL_SGUID)) && |
f67539c2 TL |
5144 | S_ISREG(pi.inode->mode) && |
5145 | (pi.inode->mode & (S_IXUSR|S_IXGRP|S_IXOTH))) { | |
5146 | pi.inode->mode &= ~(S_ISUID|S_ISGID); | |
7c673cae FG |
5147 | } |
5148 | ||
5149 | if (mask & CEPH_SETATTR_MTIME) | |
f67539c2 | 5150 | pi.inode->mtime = req->head.args.setattr.mtime; |
7c673cae | 5151 | if (mask & CEPH_SETATTR_ATIME) |
f67539c2 | 5152 | pi.inode->atime = req->head.args.setattr.atime; |
7c673cae | 5153 | if (mask & CEPH_SETATTR_BTIME) |
f67539c2 | 5154 | pi.inode->btime = req->head.args.setattr.btime; |
7c673cae | 5155 | if (mask & (CEPH_SETATTR_ATIME | CEPH_SETATTR_MTIME | CEPH_SETATTR_BTIME)) |
f67539c2 | 5156 | pi.inode->time_warp_seq++; // maybe not a timewarp, but still a serialization point. |
7c673cae FG |
5157 | if (mask & CEPH_SETATTR_SIZE) { |
5158 | if (truncating_smaller) { | |
f67539c2 | 5159 | pi.inode->truncate(old_size, req->head.args.setattr.size); |
7c673cae FG |
5160 | le->metablob.add_truncate_start(cur->ino()); |
5161 | } else { | |
f67539c2 TL |
5162 | pi.inode->size = req->head.args.setattr.size; |
5163 | pi.inode->rstat.rbytes = pi.inode->size; | |
7c673cae | 5164 | } |
f67539c2 | 5165 | pi.inode->mtime = mdr->get_op_stamp(); |
7c673cae FG |
5166 | |
5167 | // adjust client's max_size? | |
f67539c2 | 5168 | if (mds->locker->calc_new_client_ranges(cur, pi.inode->size)) { |
f91f0fd5 | 5169 | dout(10) << " client_ranges " << cur->get_previous_projected_inode()->client_ranges |
f67539c2 | 5170 | << " -> " << pi.inode->client_ranges << dendl; |
7c673cae FG |
5171 | changed_ranges = true; |
5172 | } | |
5173 | } | |
5174 | ||
f67539c2 TL |
5175 | pi.inode->version = cur->pre_dirty(); |
5176 | pi.inode->ctime = mdr->get_op_stamp(); | |
5177 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
5178 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
5179 | pi.inode->change_attr++; | |
7c673cae FG |
5180 | |
5181 | // log + wait | |
5182 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5183 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5184 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5185 | ||
5186 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur, | |
5187 | truncating_smaller, changed_ranges)); | |
5188 | ||
5189 | // flush immediately if there are readers/writers waiting | |
11fdf7f2 | 5190 | if (mdr->is_xlocked(&cur->filelock) && |
7c673cae FG |
5191 | (cur->get_caps_wanted() & (CEPH_CAP_FILE_RD|CEPH_CAP_FILE_WR))) |
5192 | mds->mdlog->flush(); | |
5193 | } | |
5194 | ||
5195 | /* Takes responsibility for mdr */ | |
5196 | void Server::do_open_truncate(MDRequestRef& mdr, int cmode) | |
5197 | { | |
5198 | CInode *in = mdr->in[0]; | |
5199 | client_t client = mdr->get_client(); | |
11fdf7f2 | 5200 | ceph_assert(in); |
7c673cae FG |
5201 | |
5202 | dout(10) << "do_open_truncate " << *in << dendl; | |
5203 | ||
5204 | SnapRealm *realm = in->find_snaprealm(); | |
9f95a23c | 5205 | Capability *cap = mds->locker->issue_new_caps(in, cmode, mdr, realm); |
7c673cae FG |
5206 | |
5207 | mdr->ls = mdlog->get_current_segment(); | |
5208 | EUpdate *le = new EUpdate(mdlog, "open_truncate"); | |
5209 | mdlog->start_entry(le); | |
5210 | ||
5211 | // prepare | |
f67539c2 TL |
5212 | auto pi = in->project_inode(mdr); |
5213 | pi.inode->version = in->pre_dirty(); | |
5214 | pi.inode->mtime = pi.inode->ctime = mdr->get_op_stamp(); | |
5215 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
5216 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
5217 | pi.inode->change_attr++; | |
5218 | ||
5219 | uint64_t old_size = std::max<uint64_t>(pi.inode->size, mdr->client_request->head.args.open.old_size); | |
7c673cae | 5220 | if (old_size > 0) { |
f67539c2 | 5221 | pi.inode->truncate(old_size, 0); |
7c673cae FG |
5222 | le->metablob.add_truncate_start(in->ino()); |
5223 | } | |
5224 | ||
5225 | bool changed_ranges = false; | |
a8e16298 | 5226 | if (cap && (cmode & CEPH_FILE_MODE_WR)) { |
f67539c2 TL |
5227 | pi.inode->client_ranges[client].range.first = 0; |
5228 | pi.inode->client_ranges[client].range.last = pi.inode->get_layout_size_increment(); | |
5229 | pi.inode->client_ranges[client].follows = realm->get_newest_seq(); | |
7c673cae | 5230 | changed_ranges = true; |
f91f0fd5 | 5231 | in->mark_clientwriteable(); |
a8e16298 | 5232 | cap->mark_clientwriteable(); |
7c673cae FG |
5233 | } |
5234 | ||
5235 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
5236 | ||
5237 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, 0, PREDIRTY_PRIMARY); | |
5238 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, in); | |
5239 | ||
5240 | // make sure ino gets into the journal | |
5241 | le->metablob.add_opened_ino(in->ino()); | |
7c673cae FG |
5242 | |
5243 | mdr->o_trunc = true; | |
5244 | ||
5245 | CDentry *dn = 0; | |
5246 | if (mdr->client_request->get_dentry_wanted()) { | |
11fdf7f2 | 5247 | ceph_assert(mdr->dn[0].size()); |
7c673cae FG |
5248 | dn = mdr->dn[0].back(); |
5249 | } | |
5250 | ||
5251 | journal_and_reply(mdr, in, dn, le, new C_MDS_inode_update_finish(this, mdr, in, old_size > 0, | |
5252 | changed_ranges)); | |
5253 | // Although the `open` part can give an early reply, the truncation won't | |
5254 | // happen until our EUpdate is persistent, to give the client a prompt | |
5255 | // response we must also flush that event. | |
5256 | mdlog->flush(); | |
5257 | } | |
5258 | ||
5259 | ||
5260 | /* This function cleans up the passed mdr */ | |
5261 | void Server::handle_client_setlayout(MDRequestRef& mdr) | |
5262 | { | |
9f95a23c TL |
5263 | const cref_t<MClientRequest> &req = mdr->client_request; |
5264 | CInode *cur = rdlock_path_pin_ref(mdr, true); | |
7c673cae FG |
5265 | if (!cur) return; |
5266 | ||
5267 | if (mdr->snapid != CEPH_NOSNAP) { | |
f67539c2 | 5268 | respond_to_request(mdr, -CEPHFS_EROFS); |
7c673cae FG |
5269 | return; |
5270 | } | |
5271 | if (!cur->is_file()) { | |
f67539c2 | 5272 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5273 | return; |
5274 | } | |
5275 | if (cur->get_projected_inode()->size || | |
5276 | cur->get_projected_inode()->truncate_seq > 1) { | |
f67539c2 | 5277 | respond_to_request(mdr, -CEPHFS_ENOTEMPTY); |
7c673cae FG |
5278 | return; |
5279 | } | |
5280 | ||
5281 | // validate layout | |
5282 | file_layout_t layout = cur->get_projected_inode()->layout; | |
5283 | // save existing layout for later | |
5284 | const auto old_layout = layout; | |
5285 | ||
5286 | int access = MAY_WRITE; | |
5287 | ||
5288 | if (req->head.args.setlayout.layout.fl_object_size > 0) | |
5289 | layout.object_size = req->head.args.setlayout.layout.fl_object_size; | |
5290 | if (req->head.args.setlayout.layout.fl_stripe_unit > 0) | |
5291 | layout.stripe_unit = req->head.args.setlayout.layout.fl_stripe_unit; | |
5292 | if (req->head.args.setlayout.layout.fl_stripe_count > 0) | |
5293 | layout.stripe_count=req->head.args.setlayout.layout.fl_stripe_count; | |
5294 | if (req->head.args.setlayout.layout.fl_pg_pool > 0) { | |
5295 | layout.pool_id = req->head.args.setlayout.layout.fl_pg_pool; | |
5296 | ||
5297 | // make sure we have as new a map as the client | |
5298 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
5299 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
5300 | return; | |
5301 | } | |
5302 | } | |
5303 | ||
5304 | // Don't permit layout modifications without 'p' caps | |
5305 | if (layout != old_layout) { | |
5306 | access |= MAY_SET_VXATTR; | |
5307 | } | |
5308 | ||
5309 | if (!layout.is_valid()) { | |
5310 | dout(10) << "bad layout" << dendl; | |
f67539c2 | 5311 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5312 | return; |
5313 | } | |
5314 | if (!mds->mdsmap->is_data_pool(layout.pool_id)) { | |
5315 | dout(10) << " invalid data pool " << layout.pool_id << dendl; | |
f67539c2 | 5316 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5317 | return; |
5318 | } | |
5319 | ||
9f95a23c | 5320 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
5321 | lov.add_xlock(&cur->filelock); |
5322 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
5323 | return; |
5324 | ||
5325 | if (!check_access(mdr, cur, access)) | |
5326 | return; | |
5327 | ||
5328 | // project update | |
f67539c2 TL |
5329 | auto pi = cur->project_inode(mdr); |
5330 | pi.inode->layout = layout; | |
7c673cae | 5331 | // add the old pool to the inode |
f67539c2 TL |
5332 | pi.inode->add_old_pool(old_layout.pool_id); |
5333 | pi.inode->version = cur->pre_dirty(); | |
5334 | pi.inode->ctime = mdr->get_op_stamp(); | |
5335 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
5336 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
5337 | pi.inode->change_attr++; | |
7c673cae FG |
5338 | |
5339 | // log + wait | |
5340 | mdr->ls = mdlog->get_current_segment(); | |
5341 | EUpdate *le = new EUpdate(mdlog, "setlayout"); | |
5342 | mdlog->start_entry(le); | |
5343 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5344 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5345 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5346 | ||
5347 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); | |
5348 | } | |
5349 | ||
9f95a23c | 5350 | bool Server::xlock_policylock(MDRequestRef& mdr, CInode *in, bool want_layout, bool xlock_snaplock) |
7c673cae | 5351 | { |
9f95a23c TL |
5352 | if (mdr->locking_state & MutationImpl::ALL_LOCKED) |
5353 | return true; | |
5354 | ||
11fdf7f2 | 5355 | MutationImpl::LockOpVec lov; |
9f95a23c TL |
5356 | lov.add_xlock(&in->policylock); |
5357 | if (xlock_snaplock) | |
5358 | lov.add_xlock(&in->snaplock); | |
5359 | else | |
5360 | lov.add_rdlock(&in->snaplock); | |
5361 | if (!mds->locker->acquire_locks(mdr, lov)) | |
5362 | return false; | |
7c673cae | 5363 | |
9f95a23c TL |
5364 | if (want_layout && in->get_projected_inode()->has_layout()) { |
5365 | mdr->dir_layout = in->get_projected_inode()->layout; | |
5366 | want_layout = false; | |
5367 | } | |
5368 | if (CDentry *pdn = in->get_projected_parent_dn(); pdn) { | |
5369 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr, 0, want_layout)) | |
5370 | return false; | |
7c673cae FG |
5371 | } |
5372 | ||
9f95a23c TL |
5373 | mdr->locking_state |= MutationImpl::ALL_LOCKED; |
5374 | return true; | |
5375 | } | |
5376 | ||
5377 | CInode* Server::try_get_auth_inode(MDRequestRef& mdr, inodeno_t ino) | |
5378 | { | |
5379 | CInode *in = mdcache->get_inode(ino); | |
5380 | if (!in || in->state_test(CInode::STATE_PURGING)) { | |
f67539c2 | 5381 | respond_to_request(mdr, -CEPHFS_ESTALE); |
9f95a23c TL |
5382 | return nullptr; |
5383 | } | |
5384 | if (!in->is_auth()) { | |
5385 | mdcache->request_forward(mdr, in->authority().first); | |
5386 | return nullptr; | |
5387 | } | |
5388 | ||
5389 | return in; | |
5390 | } | |
5391 | ||
5392 | void Server::handle_client_setdirlayout(MDRequestRef& mdr) | |
5393 | { | |
5394 | const cref_t<MClientRequest> &req = mdr->client_request; | |
5395 | ||
5396 | // can't use rdlock_path_pin_ref because we need to xlock snaplock/policylock | |
5397 | CInode *cur = try_get_auth_inode(mdr, req->get_filepath().get_ino()); | |
5398 | if (!cur) | |
5399 | return; | |
5400 | ||
7c673cae | 5401 | if (!cur->is_dir()) { |
f67539c2 | 5402 | respond_to_request(mdr, -CEPHFS_ENOTDIR); |
7c673cae FG |
5403 | return; |
5404 | } | |
5405 | ||
9f95a23c | 5406 | if (!xlock_policylock(mdr, cur, true)) |
7c673cae FG |
5407 | return; |
5408 | ||
5409 | // validate layout | |
f67539c2 | 5410 | const auto& old_pi = cur->get_projected_inode(); |
7c673cae FG |
5411 | file_layout_t layout; |
5412 | if (old_pi->has_layout()) | |
5413 | layout = old_pi->layout; | |
9f95a23c TL |
5414 | else if (mdr->dir_layout != file_layout_t()) |
5415 | layout = mdr->dir_layout; | |
7c673cae FG |
5416 | else |
5417 | layout = mdcache->default_file_layout; | |
5418 | ||
5419 | // Level of access required to complete | |
5420 | int access = MAY_WRITE; | |
5421 | ||
5422 | const auto old_layout = layout; | |
5423 | ||
5424 | if (req->head.args.setlayout.layout.fl_object_size > 0) | |
5425 | layout.object_size = req->head.args.setlayout.layout.fl_object_size; | |
5426 | if (req->head.args.setlayout.layout.fl_stripe_unit > 0) | |
5427 | layout.stripe_unit = req->head.args.setlayout.layout.fl_stripe_unit; | |
5428 | if (req->head.args.setlayout.layout.fl_stripe_count > 0) | |
5429 | layout.stripe_count=req->head.args.setlayout.layout.fl_stripe_count; | |
5430 | if (req->head.args.setlayout.layout.fl_pg_pool > 0) { | |
5431 | layout.pool_id = req->head.args.setlayout.layout.fl_pg_pool; | |
5432 | // make sure we have as new a map as the client | |
5433 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
5434 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
5435 | return; | |
5436 | } | |
5437 | } | |
5438 | ||
5439 | if (layout != old_layout) { | |
5440 | access |= MAY_SET_VXATTR; | |
5441 | } | |
5442 | ||
5443 | if (!layout.is_valid()) { | |
5444 | dout(10) << "bad layout" << dendl; | |
f67539c2 | 5445 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5446 | return; |
5447 | } | |
5448 | if (!mds->mdsmap->is_data_pool(layout.pool_id)) { | |
5449 | dout(10) << " invalid data pool " << layout.pool_id << dendl; | |
f67539c2 | 5450 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5451 | return; |
5452 | } | |
5453 | ||
5454 | if (!check_access(mdr, cur, access)) | |
5455 | return; | |
5456 | ||
f67539c2 TL |
5457 | auto pi = cur->project_inode(mdr); |
5458 | pi.inode->layout = layout; | |
5459 | pi.inode->version = cur->pre_dirty(); | |
7c673cae FG |
5460 | |
5461 | // log + wait | |
5462 | mdr->ls = mdlog->get_current_segment(); | |
5463 | EUpdate *le = new EUpdate(mdlog, "setlayout"); | |
5464 | mdlog->start_entry(le); | |
5465 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5466 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5467 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5468 | ||
b32b8144 | 5469 | mdr->no_early_reply = true; |
7c673cae FG |
5470 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); |
5471 | } | |
5472 | ||
5473 | // XATTRS | |
1d09f67e TL |
5474 | int Server::parse_layout_vxattr_json( |
5475 | string name, string value, const OSDMap& osdmap, file_layout_t *layout) | |
5476 | { | |
5477 | auto parse_pool = [&](std::string pool_name, int64_t pool_id) -> int64_t { | |
5478 | if (pool_name != "") { | |
5479 | int64_t _pool_id = osdmap.lookup_pg_pool_name(pool_name); | |
5480 | if (_pool_id < 0) { | |
5481 | dout(10) << __func__ << ": unknown pool name:" << pool_name << dendl; | |
5482 | return -CEPHFS_EINVAL; | |
5483 | } | |
5484 | return _pool_id; | |
5485 | } else if (pool_id >= 0) { | |
5486 | const auto pools = osdmap.get_pools(); | |
5487 | if (pools.find(pool_id) == pools.end()) { | |
5488 | dout(10) << __func__ << ": unknown pool id:" << pool_id << dendl; | |
5489 | return -CEPHFS_EINVAL; | |
5490 | } | |
5491 | return pool_id; | |
5492 | } else { | |
5493 | return -CEPHFS_EINVAL; | |
5494 | } | |
5495 | }; | |
7c673cae | 5496 | |
1d09f67e TL |
5497 | try { |
5498 | if (name == "layout.json") { | |
5499 | JSONParser json_parser; | |
5500 | if (json_parser.parse(value.c_str(), value.length()) and json_parser.is_object()) { | |
5501 | std::string field; | |
5502 | try { | |
5503 | field = "object_size"; | |
5504 | JSONDecoder::decode_json("object_size", layout->object_size, &json_parser, true); | |
5505 | ||
5506 | field = "stripe_unit"; | |
5507 | JSONDecoder::decode_json("stripe_unit", layout->stripe_unit, &json_parser, true); | |
5508 | ||
5509 | field = "stripe_count"; | |
5510 | JSONDecoder::decode_json("stripe_count", layout->stripe_count, &json_parser, true); | |
5511 | ||
5512 | field = "pool_namespace"; | |
5513 | JSONDecoder::decode_json("pool_namespace", layout->pool_ns, &json_parser, false); | |
5514 | ||
5515 | field = "pool_id"; | |
5516 | int64_t pool_id = 0; | |
5517 | JSONDecoder::decode_json("pool_id", pool_id, &json_parser, false); | |
5518 | ||
5519 | field = "pool_name"; | |
5520 | std::string pool_name; | |
5521 | JSONDecoder::decode_json("pool_name", pool_name, &json_parser, false); | |
5522 | ||
5523 | pool_id = parse_pool(pool_name, pool_id); | |
5524 | if (pool_id < 0) { | |
5525 | return (int)pool_id; | |
5526 | } | |
5527 | layout->pool_id = pool_id; | |
5528 | } catch (JSONDecoder::err&) { | |
5529 | dout(10) << __func__ << ": json is missing a mandatory field named " | |
5530 | << field << dendl; | |
5531 | return -CEPHFS_EINVAL; | |
5532 | } | |
5533 | } else { | |
5534 | dout(10) << __func__ << ": bad json" << dendl; | |
5535 | return -CEPHFS_EINVAL; | |
5536 | } | |
5537 | } else { | |
5538 | dout(10) << __func__ << ": unknown layout vxattr " << name << dendl; | |
5539 | return -CEPHFS_ENODATA; // no such attribute | |
5540 | } | |
5541 | } catch (boost::bad_lexical_cast const&) { | |
5542 | dout(10) << __func__ << ": bad vxattr value:" << value | |
5543 | << ", unable to parse for xattr:" << name << dendl; | |
5544 | return -CEPHFS_EINVAL; | |
5545 | } | |
5546 | return 0; | |
5547 | } | |
5548 | ||
5549 | // parse old style layout string | |
5550 | int Server::parse_layout_vxattr_string( | |
5551 | string name, string value, const OSDMap& osdmap, file_layout_t *layout) | |
7c673cae | 5552 | { |
7c673cae FG |
5553 | try { |
5554 | if (name == "layout") { | |
5555 | string::iterator begin = value.begin(); | |
5556 | string::iterator end = value.end(); | |
5557 | keys_and_values<string::iterator> p; // create instance of parser | |
5558 | std::map<string, string> m; // map to receive results | |
5559 | if (!qi::parse(begin, end, p, m)) { // returns true if successful | |
f67539c2 | 5560 | return -CEPHFS_EINVAL; |
7c673cae FG |
5561 | } |
5562 | string left(begin, end); | |
1d09f67e | 5563 | dout(10) << __func__ << ": parsed " << m << " left '" << left << "'" << dendl; |
7c673cae | 5564 | if (begin != end) |
f67539c2 | 5565 | return -CEPHFS_EINVAL; |
7c673cae FG |
5566 | for (map<string,string>::iterator q = m.begin(); q != m.end(); ++q) { |
5567 | // Skip validation on each attr, we do it once at the end (avoid | |
5568 | // rejecting intermediate states if the overall result is ok) | |
1d09f67e TL |
5569 | int r = parse_layout_vxattr_string(string("layout.") + q->first, q->second, |
5570 | osdmap, layout); | |
7c673cae FG |
5571 | if (r < 0) |
5572 | return r; | |
5573 | } | |
5574 | } else if (name == "layout.object_size") { | |
5575 | layout->object_size = boost::lexical_cast<unsigned>(value); | |
5576 | } else if (name == "layout.stripe_unit") { | |
5577 | layout->stripe_unit = boost::lexical_cast<unsigned>(value); | |
5578 | } else if (name == "layout.stripe_count") { | |
5579 | layout->stripe_count = boost::lexical_cast<unsigned>(value); | |
5580 | } else if (name == "layout.pool") { | |
5581 | try { | |
5582 | layout->pool_id = boost::lexical_cast<unsigned>(value); | |
5583 | } catch (boost::bad_lexical_cast const&) { | |
5584 | int64_t pool = osdmap.lookup_pg_pool_name(value); | |
5585 | if (pool < 0) { | |
1d09f67e | 5586 | dout(10) << __func__ << ": unknown pool " << value << dendl; |
f67539c2 | 5587 | return -CEPHFS_ENOENT; |
7c673cae FG |
5588 | } |
5589 | layout->pool_id = pool; | |
5590 | } | |
1d09f67e TL |
5591 | } else if (name == "layout.pool_id") { |
5592 | layout->pool_id = boost::lexical_cast<int64_t>(value); | |
5593 | } else if (name == "layout.pool_name") { | |
5594 | layout->pool_id = osdmap.lookup_pg_pool_name(value); | |
5595 | if (layout->pool_id < 0) { | |
5596 | dout(10) << __func__ << ": unknown pool " << value << dendl; | |
5597 | return -CEPHFS_EINVAL; | |
5598 | } | |
7c673cae FG |
5599 | } else if (name == "layout.pool_namespace") { |
5600 | layout->pool_ns = value; | |
5601 | } else { | |
1d09f67e TL |
5602 | dout(10) << __func__ << ": unknown layout vxattr " << name << dendl; |
5603 | return -CEPHFS_ENODATA; // no such attribute | |
7c673cae FG |
5604 | } |
5605 | } catch (boost::bad_lexical_cast const&) { | |
1d09f67e TL |
5606 | dout(10) << __func__ << ": bad vxattr value, unable to parse int for " |
5607 | << name << dendl; | |
f67539c2 | 5608 | return -CEPHFS_EINVAL; |
7c673cae | 5609 | } |
1d09f67e TL |
5610 | return 0; |
5611 | } | |
5612 | ||
5613 | int Server::parse_layout_vxattr(string name, string value, const OSDMap& osdmap, | |
5614 | file_layout_t *layout, bool validate) | |
5615 | { | |
5616 | dout(20) << __func__ << ": name:" << name << " value:'" << value << "'" << dendl; | |
5617 | ||
5618 | int r; | |
5619 | if (name == "layout.json") { | |
5620 | r = parse_layout_vxattr_json(name, value, osdmap, layout); | |
5621 | } else { | |
5622 | r = parse_layout_vxattr_string(name, value, osdmap, layout); | |
5623 | } | |
5624 | if (r < 0) { | |
5625 | return r; | |
5626 | } | |
7c673cae FG |
5627 | |
5628 | if (validate && !layout->is_valid()) { | |
1d09f67e | 5629 | dout(10) << __func__ << ": bad layout" << dendl; |
f67539c2 | 5630 | return -CEPHFS_EINVAL; |
7c673cae FG |
5631 | } |
5632 | if (!mds->mdsmap->is_data_pool(layout->pool_id)) { | |
1d09f67e | 5633 | dout(10) << __func__ << ": invalid data pool " << layout->pool_id << dendl; |
f67539c2 | 5634 | return -CEPHFS_EINVAL; |
7c673cae FG |
5635 | } |
5636 | return 0; | |
5637 | } | |
5638 | ||
5639 | int Server::parse_quota_vxattr(string name, string value, quota_info_t *quota) | |
5640 | { | |
5641 | dout(20) << "parse_quota_vxattr name " << name << " value '" << value << "'" << dendl; | |
5642 | try { | |
5643 | if (name == "quota") { | |
5644 | string::iterator begin = value.begin(); | |
5645 | string::iterator end = value.end(); | |
11fdf7f2 TL |
5646 | if (begin == end) { |
5647 | // keep quota unchanged. (for create_quota_realm()) | |
5648 | return 0; | |
5649 | } | |
7c673cae FG |
5650 | keys_and_values<string::iterator> p; // create instance of parser |
5651 | std::map<string, string> m; // map to receive results | |
5652 | if (!qi::parse(begin, end, p, m)) { // returns true if successful | |
f67539c2 | 5653 | return -CEPHFS_EINVAL; |
7c673cae FG |
5654 | } |
5655 | string left(begin, end); | |
5656 | dout(10) << " parsed " << m << " left '" << left << "'" << dendl; | |
5657 | if (begin != end) | |
f67539c2 | 5658 | return -CEPHFS_EINVAL; |
7c673cae FG |
5659 | for (map<string,string>::iterator q = m.begin(); q != m.end(); ++q) { |
5660 | int r = parse_quota_vxattr(string("quota.") + q->first, q->second, quota); | |
5661 | if (r < 0) | |
5662 | return r; | |
5663 | } | |
5664 | } else if (name == "quota.max_bytes") { | |
5665 | int64_t q = boost::lexical_cast<int64_t>(value); | |
5666 | if (q < 0) | |
f67539c2 | 5667 | return -CEPHFS_EINVAL; |
7c673cae FG |
5668 | quota->max_bytes = q; |
5669 | } else if (name == "quota.max_files") { | |
5670 | int64_t q = boost::lexical_cast<int64_t>(value); | |
5671 | if (q < 0) | |
f67539c2 | 5672 | return -CEPHFS_EINVAL; |
7c673cae FG |
5673 | quota->max_files = q; |
5674 | } else { | |
5675 | dout(10) << " unknown quota vxattr " << name << dendl; | |
f67539c2 | 5676 | return -CEPHFS_EINVAL; |
7c673cae FG |
5677 | } |
5678 | } catch (boost::bad_lexical_cast const&) { | |
5679 | dout(10) << "bad vxattr value, unable to parse int for " << name << dendl; | |
f67539c2 | 5680 | return -CEPHFS_EINVAL; |
7c673cae FG |
5681 | } |
5682 | ||
5683 | if (!quota->is_valid()) { | |
5684 | dout(10) << "bad quota" << dendl; | |
f67539c2 | 5685 | return -CEPHFS_EINVAL; |
7c673cae FG |
5686 | } |
5687 | return 0; | |
5688 | } | |
5689 | ||
11fdf7f2 TL |
5690 | void Server::create_quota_realm(CInode *in) |
5691 | { | |
5692 | dout(10) << __func__ << " " << *in << dendl; | |
5693 | ||
9f95a23c | 5694 | auto req = make_message<MClientRequest>(CEPH_MDS_OP_SETXATTR); |
11fdf7f2 TL |
5695 | req->set_filepath(filepath(in->ino())); |
5696 | req->set_string2("ceph.quota"); | |
5697 | // empty vxattr value | |
5698 | req->set_tid(mds->issue_tid()); | |
5699 | ||
5700 | mds->send_message_mds(req, in->authority().first); | |
5701 | } | |
5702 | ||
7c673cae FG |
5703 | /* |
5704 | * Verify that the file layout attribute carried by client | |
5705 | * is well-formatted. | |
5706 | * Return 0 on success, otherwise this function takes | |
5707 | * responsibility for the passed mdr. | |
5708 | */ | |
5709 | int Server::check_layout_vxattr(MDRequestRef& mdr, | |
5710 | string name, | |
5711 | string value, | |
5712 | file_layout_t *layout) | |
5713 | { | |
9f95a23c | 5714 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
5715 | epoch_t epoch; |
5716 | int r; | |
5717 | ||
5718 | mds->objecter->with_osdmap([&](const OSDMap& osdmap) { | |
5719 | r = parse_layout_vxattr(name, value, osdmap, layout); | |
5720 | epoch = osdmap.get_epoch(); | |
5721 | }); | |
5722 | ||
f67539c2 | 5723 | if (r == -CEPHFS_ENOENT) { |
7c673cae FG |
5724 | |
5725 | // we don't have the specified pool, make sure our map | |
5726 | // is newer than or as new as the client. | |
5727 | epoch_t req_epoch = req->get_osdmap_epoch(); | |
5728 | ||
5729 | if (req_epoch > epoch) { | |
5730 | ||
5731 | // well, our map is older. consult mds. | |
f67539c2 | 5732 | auto fin = new C_IO_Wrapper(mds, new C_MDS_RetryRequest(mdcache, mdr)); |
7c673cae | 5733 | |
f67539c2 TL |
5734 | mds->objecter->wait_for_map(req_epoch, lambdafy(fin)); |
5735 | return r; | |
7c673cae FG |
5736 | } else if (req_epoch == 0 && !mdr->waited_for_osdmap) { |
5737 | ||
5738 | // For compatibility with client w/ old code, we still need get the | |
5739 | // latest map. One day if COMPACT_VERSION of MClientRequest >=3, | |
5740 | // we can remove those code. | |
5741 | mdr->waited_for_osdmap = true; | |
f67539c2 TL |
5742 | mds->objecter->wait_for_latest_osdmap(std::ref(*new C_IO_Wrapper( |
5743 | mds, new C_MDS_RetryRequest(mdcache, mdr)))); | |
7c673cae FG |
5744 | return r; |
5745 | } | |
5746 | } | |
5747 | ||
5748 | if (r < 0) { | |
5749 | ||
f67539c2 TL |
5750 | if (r == -CEPHFS_ENOENT) |
5751 | r = -CEPHFS_EINVAL; | |
7c673cae FG |
5752 | |
5753 | respond_to_request(mdr, r); | |
5754 | return r; | |
5755 | } | |
5756 | ||
5757 | // all is well | |
5758 | return 0; | |
5759 | } | |
5760 | ||
9f95a23c | 5761 | void Server::handle_set_vxattr(MDRequestRef& mdr, CInode *cur) |
7c673cae | 5762 | { |
9f95a23c | 5763 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
5764 | string name(req->get_path2()); |
5765 | bufferlist bl = req->get_data(); | |
5766 | string value (bl.c_str(), bl.length()); | |
5767 | dout(10) << "handle_set_vxattr " << name | |
5768 | << " val " << value.length() | |
5769 | << " bytes on " << *cur | |
5770 | << dendl; | |
5771 | ||
94b18763 | 5772 | CInode::mempool_inode *pip = nullptr; |
7c673cae FG |
5773 | string rest; |
5774 | ||
5775 | if (!check_access(mdr, cur, MAY_SET_VXATTR)) { | |
5776 | return; | |
5777 | } | |
5778 | ||
adb31ebb | 5779 | bool adjust_realm = false; |
7c673cae FG |
5780 | if (name.compare(0, 15, "ceph.dir.layout") == 0) { |
5781 | if (!cur->is_dir()) { | |
f67539c2 | 5782 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5783 | return; |
5784 | } | |
5785 | ||
9f95a23c TL |
5786 | if (!xlock_policylock(mdr, cur, true)) |
5787 | return; | |
5788 | ||
7c673cae FG |
5789 | file_layout_t layout; |
5790 | if (cur->get_projected_inode()->has_layout()) | |
5791 | layout = cur->get_projected_inode()->layout; | |
9f95a23c TL |
5792 | else if (mdr->dir_layout != file_layout_t()) |
5793 | layout = mdr->dir_layout; | |
7c673cae FG |
5794 | else |
5795 | layout = mdcache->default_file_layout; | |
5796 | ||
5797 | rest = name.substr(name.find("layout")); | |
5798 | if (check_layout_vxattr(mdr, rest, value, &layout) < 0) | |
5799 | return; | |
5800 | ||
f67539c2 TL |
5801 | auto pi = cur->project_inode(mdr); |
5802 | pi.inode->layout = layout; | |
b32b8144 | 5803 | mdr->no_early_reply = true; |
f67539c2 | 5804 | pip = pi.inode.get(); |
7c673cae FG |
5805 | } else if (name.compare(0, 16, "ceph.file.layout") == 0) { |
5806 | if (!cur->is_file()) { | |
f67539c2 | 5807 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5808 | return; |
5809 | } | |
5810 | if (cur->get_projected_inode()->size || | |
5811 | cur->get_projected_inode()->truncate_seq > 1) { | |
f67539c2 | 5812 | respond_to_request(mdr, -CEPHFS_ENOTEMPTY); |
7c673cae FG |
5813 | return; |
5814 | } | |
5815 | file_layout_t layout = cur->get_projected_inode()->layout; | |
5816 | rest = name.substr(name.find("layout")); | |
5817 | if (check_layout_vxattr(mdr, rest, value, &layout) < 0) | |
5818 | return; | |
5819 | ||
9f95a23c | 5820 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
5821 | lov.add_xlock(&cur->filelock); |
5822 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
5823 | return; |
5824 | ||
f67539c2 TL |
5825 | auto pi = cur->project_inode(mdr); |
5826 | int64_t old_pool = pi.inode->layout.pool_id; | |
5827 | pi.inode->add_old_pool(old_pool); | |
5828 | pi.inode->layout = layout; | |
5829 | pip = pi.inode.get(); | |
7c673cae | 5830 | } else if (name.compare(0, 10, "ceph.quota") == 0) { |
f67539c2 TL |
5831 | if (!cur->is_dir()) { |
5832 | respond_to_request(mdr, -CEPHFS_EINVAL); | |
7c673cae FG |
5833 | return; |
5834 | } | |
5835 | ||
5836 | quota_info_t quota = cur->get_projected_inode()->quota; | |
5837 | ||
5838 | rest = name.substr(name.find("quota")); | |
5839 | int r = parse_quota_vxattr(rest, value, "a); | |
5840 | if (r < 0) { | |
5841 | respond_to_request(mdr, r); | |
5842 | return; | |
5843 | } | |
5844 | ||
9f95a23c | 5845 | if (quota.is_enable() && !cur->get_projected_srnode()) |
adb31ebb TL |
5846 | adjust_realm = true; |
5847 | ||
5848 | if (!xlock_policylock(mdr, cur, false, adjust_realm)) | |
5849 | return; | |
11fdf7f2 | 5850 | |
adb31ebb TL |
5851 | if (cur->get_projected_inode()->quota == quota) { |
5852 | respond_to_request(mdr, 0); | |
7c673cae | 5853 | return; |
adb31ebb | 5854 | } |
7c673cae | 5855 | |
f67539c2 TL |
5856 | auto pi = cur->project_inode(mdr, false, adjust_realm); |
5857 | pi.inode->quota = quota; | |
94b18763 | 5858 | |
adb31ebb TL |
5859 | if (adjust_realm) |
5860 | pi.snapnode->created = pi.snapnode->seq = cur->find_snaprealm()->get_newest_seq(); | |
5861 | ||
b32b8144 | 5862 | mdr->no_early_reply = true; |
f67539c2 | 5863 | pip = pi.inode.get(); |
28e407b8 AA |
5864 | |
5865 | client_t exclude_ct = mdr->get_client(); | |
a8e16298 | 5866 | mdcache->broadcast_quota_to_client(cur, exclude_ct, true); |
adb31ebb TL |
5867 | } else if (name == "ceph.dir.subvolume"sv) { |
5868 | if (!cur->is_dir()) { | |
f67539c2 | 5869 | respond_to_request(mdr, -CEPHFS_EINVAL); |
adb31ebb TL |
5870 | return; |
5871 | } | |
5872 | ||
5873 | bool val; | |
5874 | try { | |
5875 | val = boost::lexical_cast<bool>(value); | |
5876 | } catch (boost::bad_lexical_cast const&) { | |
5877 | dout(10) << "bad vxattr value, unable to parse bool for " << name << dendl; | |
f67539c2 | 5878 | respond_to_request(mdr, -CEPHFS_EINVAL); |
adb31ebb TL |
5879 | return; |
5880 | } | |
5881 | ||
b3b6e05e TL |
5882 | /* Verify it's not already a subvolume with lighter weight |
5883 | * rdlock. | |
5884 | */ | |
5885 | if (!mdr->more()->rdonly_checks) { | |
5886 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { | |
5887 | MutationImpl::LockOpVec lov; | |
5888 | lov.add_rdlock(&cur->snaplock); | |
5889 | if (!mds->locker->acquire_locks(mdr, lov)) | |
5890 | return; | |
5891 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
5892 | } | |
b3b6e05e TL |
5893 | const auto srnode = cur->get_projected_srnode(); |
5894 | if (val == (srnode && srnode->is_subvolume())) { | |
5895 | dout(20) << "already marked subvolume" << dendl; | |
5896 | respond_to_request(mdr, 0); | |
5897 | return; | |
5898 | } | |
5899 | mdr->more()->rdonly_checks = true; | |
5900 | } | |
5901 | ||
5902 | if ((mdr->locking_state & MutationImpl::ALL_LOCKED) && !mdr->is_xlocked(&cur->snaplock)) { | |
5903 | /* drop the rdlock and acquire xlocks */ | |
5904 | dout(20) << "dropping rdlocks" << dendl; | |
5905 | mds->locker->drop_locks(mdr.get()); | |
5906 | if (!xlock_policylock(mdr, cur, false, true)) | |
5907 | return; | |
5908 | } | |
adb31ebb | 5909 | |
b3b6e05e | 5910 | /* repeat rdonly checks in case changed between rdlock -> xlock */ |
adb31ebb TL |
5911 | SnapRealm *realm = cur->find_snaprealm(); |
5912 | if (val) { | |
5913 | inodeno_t subvol_ino = realm->get_subvolume_ino(); | |
5914 | // can't create subvolume inside another subvolume | |
5915 | if (subvol_ino && subvol_ino != cur->ino()) { | |
f67539c2 | 5916 | respond_to_request(mdr, -CEPHFS_EINVAL); |
adb31ebb TL |
5917 | return; |
5918 | } | |
5919 | } | |
5920 | ||
5921 | const auto srnode = cur->get_projected_srnode(); | |
5922 | if (val == (srnode && srnode->is_subvolume())) { | |
5923 | respond_to_request(mdr, 0); | |
5924 | return; | |
5925 | } | |
5926 | ||
f67539c2 | 5927 | auto pi = cur->project_inode(mdr, false, true); |
adb31ebb TL |
5928 | if (!srnode) |
5929 | pi.snapnode->created = pi.snapnode->seq = realm->get_newest_seq(); | |
5930 | if (val) | |
5931 | pi.snapnode->mark_subvolume(); | |
5932 | else | |
5933 | pi.snapnode->clear_subvolume(); | |
5934 | ||
5935 | mdr->no_early_reply = true; | |
f67539c2 | 5936 | pip = pi.inode.get(); |
adb31ebb | 5937 | adjust_realm = true; |
f6b5b4d7 | 5938 | } else if (name == "ceph.dir.pin"sv) { |
7c673cae | 5939 | if (!cur->is_dir() || cur->is_root()) { |
f67539c2 | 5940 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5941 | return; |
5942 | } | |
5943 | ||
5944 | mds_rank_t rank; | |
5945 | try { | |
5946 | rank = boost::lexical_cast<mds_rank_t>(value); | |
5947 | if (rank < 0) rank = MDS_RANK_NONE; | |
20effc67 TL |
5948 | else if (rank >= MAX_MDS) { |
5949 | respond_to_request(mdr, -CEPHFS_EDOM); | |
5950 | return; | |
5951 | } | |
7c673cae FG |
5952 | } catch (boost::bad_lexical_cast const&) { |
5953 | dout(10) << "bad vxattr value, unable to parse int for " << name << dendl; | |
f67539c2 | 5954 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
5955 | return; |
5956 | } | |
5957 | ||
9f95a23c | 5958 | if (!xlock_policylock(mdr, cur)) |
7c673cae FG |
5959 | return; |
5960 | ||
f67539c2 | 5961 | auto pi = cur->project_inode(mdr); |
7c673cae | 5962 | cur->set_export_pin(rank); |
f67539c2 | 5963 | pip = pi.inode.get(); |
f6b5b4d7 TL |
5964 | } else if (name == "ceph.dir.pin.random"sv) { |
5965 | if (!cur->is_dir() || cur->is_root()) { | |
f67539c2 | 5966 | respond_to_request(mdr, -CEPHFS_EINVAL); |
f6b5b4d7 TL |
5967 | return; |
5968 | } | |
5969 | ||
5970 | double val; | |
5971 | try { | |
5972 | val = boost::lexical_cast<double>(value); | |
5973 | } catch (boost::bad_lexical_cast const&) { | |
5974 | dout(10) << "bad vxattr value, unable to parse float for " << name << dendl; | |
f67539c2 | 5975 | respond_to_request(mdr, -CEPHFS_EINVAL); |
f6b5b4d7 TL |
5976 | return; |
5977 | } | |
5978 | ||
5979 | if (val < 0.0 || 1.0 < val) { | |
f67539c2 | 5980 | respond_to_request(mdr, -CEPHFS_EDOM); |
f6b5b4d7 TL |
5981 | return; |
5982 | } else if (mdcache->export_ephemeral_random_max < val) { | |
f67539c2 | 5983 | respond_to_request(mdr, -CEPHFS_EINVAL); |
f6b5b4d7 TL |
5984 | return; |
5985 | } | |
5986 | ||
5987 | if (!xlock_policylock(mdr, cur)) | |
5988 | return; | |
5989 | ||
f67539c2 | 5990 | auto pi = cur->project_inode(mdr); |
f6b5b4d7 | 5991 | cur->setxattr_ephemeral_rand(val); |
f67539c2 | 5992 | pip = pi.inode.get(); |
f6b5b4d7 TL |
5993 | } else if (name == "ceph.dir.pin.distributed"sv) { |
5994 | if (!cur->is_dir() || cur->is_root()) { | |
f67539c2 | 5995 | respond_to_request(mdr, -CEPHFS_EINVAL); |
f6b5b4d7 TL |
5996 | return; |
5997 | } | |
5998 | ||
5999 | bool val; | |
6000 | try { | |
6001 | val = boost::lexical_cast<bool>(value); | |
6002 | } catch (boost::bad_lexical_cast const&) { | |
6003 | dout(10) << "bad vxattr value, unable to parse bool for " << name << dendl; | |
f67539c2 | 6004 | respond_to_request(mdr, -CEPHFS_EINVAL); |
f6b5b4d7 TL |
6005 | return; |
6006 | } | |
6007 | ||
6008 | if (!xlock_policylock(mdr, cur)) | |
6009 | return; | |
6010 | ||
f67539c2 | 6011 | auto pi = cur->project_inode(mdr); |
f6b5b4d7 | 6012 | cur->setxattr_ephemeral_dist(val); |
f67539c2 | 6013 | pip = pi.inode.get(); |
7c673cae FG |
6014 | } else { |
6015 | dout(10) << " unknown vxattr " << name << dendl; | |
f67539c2 | 6016 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
6017 | return; |
6018 | } | |
6019 | ||
94b18763 | 6020 | pip->change_attr++; |
91327a77 AA |
6021 | pip->ctime = mdr->get_op_stamp(); |
6022 | if (mdr->get_op_stamp() > pip->rstat.rctime) | |
6023 | pip->rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 6024 | pip->version = cur->pre_dirty(); |
7c673cae | 6025 | if (cur->is_file()) |
94b18763 | 6026 | pip->update_backtrace(); |
7c673cae FG |
6027 | |
6028 | // log + wait | |
6029 | mdr->ls = mdlog->get_current_segment(); | |
6030 | EUpdate *le = new EUpdate(mdlog, "set vxattr layout"); | |
6031 | mdlog->start_entry(le); | |
6032 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6033 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
6034 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
6035 | ||
11fdf7f2 | 6036 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur, |
adb31ebb | 6037 | false, false, adjust_realm)); |
7c673cae FG |
6038 | return; |
6039 | } | |
6040 | ||
9f95a23c | 6041 | void Server::handle_remove_vxattr(MDRequestRef& mdr, CInode *cur) |
7c673cae | 6042 | { |
9f95a23c | 6043 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
6044 | string name(req->get_path2()); |
6045 | ||
6046 | dout(10) << __func__ << " " << name << " on " << *cur << dendl; | |
6047 | ||
6048 | if (name == "ceph.dir.layout") { | |
6049 | if (!cur->is_dir()) { | |
f67539c2 | 6050 | respond_to_request(mdr, -CEPHFS_ENODATA); |
7c673cae FG |
6051 | return; |
6052 | } | |
6053 | if (cur->is_root()) { | |
6054 | dout(10) << "can't remove layout policy on the root directory" << dendl; | |
f67539c2 | 6055 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
6056 | return; |
6057 | } | |
6058 | ||
6059 | if (!cur->get_projected_inode()->has_layout()) { | |
f67539c2 | 6060 | respond_to_request(mdr, -CEPHFS_ENODATA); |
7c673cae FG |
6061 | return; |
6062 | } | |
6063 | ||
9f95a23c | 6064 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
6065 | lov.add_xlock(&cur->policylock); |
6066 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
6067 | return; |
6068 | ||
f67539c2 TL |
6069 | auto pi = cur->project_inode(mdr); |
6070 | pi.inode->clear_layout(); | |
6071 | pi.inode->version = cur->pre_dirty(); | |
7c673cae FG |
6072 | |
6073 | // log + wait | |
6074 | mdr->ls = mdlog->get_current_segment(); | |
6075 | EUpdate *le = new EUpdate(mdlog, "remove dir layout vxattr"); | |
6076 | mdlog->start_entry(le); | |
6077 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6078 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
6079 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
6080 | ||
b32b8144 | 6081 | mdr->no_early_reply = true; |
7c673cae FG |
6082 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); |
6083 | return; | |
6084 | } else if (name == "ceph.dir.layout.pool_namespace" | |
6085 | || name == "ceph.file.layout.pool_namespace") { | |
6086 | // Namespace is the only layout field that has a meaningful | |
6087 | // null/none value (empty string, means default layout). Is equivalent | |
6088 | // to a setxattr with empty string: pass through the empty payload of | |
6089 | // the rmxattr request to do this. | |
9f95a23c | 6090 | handle_set_vxattr(mdr, cur); |
7c673cae FG |
6091 | return; |
6092 | } | |
6093 | ||
f67539c2 | 6094 | respond_to_request(mdr, -CEPHFS_ENODATA); |
7c673cae FG |
6095 | } |
6096 | ||
f67539c2 TL |
6097 | const Server::XattrHandler Server::xattr_handlers[] = { |
6098 | { | |
6099 | xattr_name: Server::DEFAULT_HANDLER, | |
6100 | description: "default xattr handler", | |
6101 | validate: &Server::default_xattr_validate, | |
6102 | setxattr: &Server::default_setxattr_handler, | |
6103 | removexattr: &Server::default_removexattr_handler, | |
6104 | }, | |
6105 | { | |
6106 | xattr_name: "ceph.mirror.info", | |
6107 | description: "mirror info xattr handler", | |
6108 | validate: &Server::mirror_info_xattr_validate, | |
6109 | setxattr: &Server::mirror_info_setxattr_handler, | |
6110 | removexattr: &Server::mirror_info_removexattr_handler | |
6111 | }, | |
6112 | }; | |
7c673cae | 6113 | |
f67539c2 TL |
6114 | const Server::XattrHandler* Server::get_xattr_or_default_handler(std::string_view xattr_name) { |
6115 | const XattrHandler *default_xattr_handler = nullptr; | |
7c673cae | 6116 | |
f67539c2 TL |
6117 | for (auto &handler : xattr_handlers) { |
6118 | if (handler.xattr_name == Server::DEFAULT_HANDLER) { | |
6119 | ceph_assert(default_xattr_handler == nullptr); | |
6120 | default_xattr_handler = &handler; | |
6121 | } | |
6122 | if (handler.xattr_name == xattr_name) { | |
6123 | dout(20) << "handler=" << handler.description << dendl; | |
6124 | return &handler; | |
6125 | } | |
6126 | } | |
7c673cae | 6127 | |
f67539c2 TL |
6128 | ceph_assert(default_xattr_handler != nullptr); |
6129 | dout(20) << "handler=" << default_xattr_handler->description << dendl; | |
6130 | return default_xattr_handler; | |
6131 | } | |
7c673cae | 6132 | |
f67539c2 TL |
6133 | int Server::xattr_validate(CInode *cur, const InodeStoreBase::xattr_map_const_ptr xattrs, |
6134 | const std::string &xattr_name, int op, int flags) { | |
6135 | if (op == CEPH_MDS_OP_SETXATTR) { | |
6136 | if (xattrs) { | |
6137 | if ((flags & CEPH_XATTR_CREATE) && xattrs->count(mempool::mds_co::string(xattr_name))) { | |
6138 | dout(10) << "setxattr '" << xattr_name << "' XATTR_CREATE and CEPHFS_EEXIST on " << *cur << dendl; | |
6139 | return -CEPHFS_EEXIST; | |
6140 | } | |
6141 | } | |
6142 | if ((flags & CEPH_XATTR_REPLACE) && !(xattrs && xattrs->count(mempool::mds_co::string(xattr_name)))) { | |
6143 | dout(10) << "setxattr '" << xattr_name << "' XATTR_REPLACE and CEPHFS_ENODATA on " << *cur << dendl; | |
6144 | return -CEPHFS_ENODATA; | |
6145 | } | |
6146 | ||
6147 | return 0; | |
7c673cae | 6148 | } |
f67539c2 TL |
6149 | |
6150 | if (op == CEPH_MDS_OP_RMXATTR) { | |
6151 | if (!xattrs || xattrs->count(mempool::mds_co::string(xattr_name)) == 0) { | |
6152 | dout(10) << "removexattr '" << xattr_name << "' and CEPHFS_ENODATA on " << *cur << dendl; | |
6153 | return -CEPHFS_ENODATA; | |
6154 | } | |
6155 | ||
6156 | return 0; | |
6157 | } | |
6158 | ||
6159 | derr << ": unhandled validation for: " << xattr_name << dendl; | |
6160 | return -CEPHFS_EINVAL; | |
6161 | } | |
6162 | ||
6163 | void Server::xattr_set(InodeStoreBase::xattr_map_ptr xattrs, const std::string &xattr_name, | |
6164 | const bufferlist &xattr_value) { | |
6165 | size_t len = xattr_value.length(); | |
6166 | bufferptr b = buffer::create(len); | |
6167 | if (len) { | |
6168 | xattr_value.begin().copy(len, b.c_str()); | |
6169 | } | |
6170 | auto em = xattrs->emplace(std::piecewise_construct, | |
6171 | std::forward_as_tuple(mempool::mds_co::string(xattr_name)), | |
6172 | std::forward_as_tuple(b)); | |
6173 | if (!em.second) { | |
6174 | em.first->second = b; | |
6175 | } | |
6176 | } | |
6177 | ||
6178 | void Server::xattr_rm(InodeStoreBase::xattr_map_ptr xattrs, const std::string &xattr_name) { | |
6179 | xattrs->erase(mempool::mds_co::string(xattr_name)); | |
6180 | } | |
6181 | ||
6182 | int Server::default_xattr_validate(CInode *cur, const InodeStoreBase::xattr_map_const_ptr xattrs, | |
6183 | XattrOp *xattr_op) { | |
6184 | return xattr_validate(cur, xattrs, xattr_op->xattr_name, xattr_op->op, xattr_op->flags); | |
6185 | } | |
6186 | ||
6187 | void Server::default_setxattr_handler(CInode *cur, InodeStoreBase::xattr_map_ptr xattrs, | |
6188 | const XattrOp &xattr_op) { | |
6189 | xattr_set(xattrs, xattr_op.xattr_name, xattr_op.xattr_value); | |
6190 | } | |
6191 | ||
6192 | void Server::default_removexattr_handler(CInode *cur, InodeStoreBase::xattr_map_ptr xattrs, | |
6193 | const XattrOp &xattr_op) { | |
6194 | xattr_rm(xattrs, xattr_op.xattr_name); | |
6195 | } | |
6196 | ||
6197 | // mirror info xattr handlers | |
6198 | const std::string Server::MirrorXattrInfo::MIRROR_INFO_REGEX = "^cluster_id=([a-f0-9]{8}-" \ | |
6199 | "[a-f0-9]{4}-[a-f0-9]{4}-" \ | |
6200 | "[a-f0-9]{4}-[a-f0-9]{12})" \ | |
6201 | " fs_id=(\\d+)$"; | |
6202 | const std::string Server::MirrorXattrInfo::CLUSTER_ID = "ceph.mirror.info.cluster_id"; | |
6203 | const std::string Server::MirrorXattrInfo::FS_ID = "ceph.mirror.info.fs_id"; | |
6204 | int Server::parse_mirror_info_xattr(const std::string &name, const std::string &value, | |
6205 | std::string &cluster_id, std::string &fs_id) { | |
6206 | dout(20) << "parsing name=" << name << ", value=" << value << dendl; | |
6207 | ||
6208 | static const std::regex regex(Server::MirrorXattrInfo::MIRROR_INFO_REGEX); | |
6209 | std::smatch match; | |
6210 | ||
6211 | std::regex_search(value, match, regex); | |
6212 | if (match.size() != 3) { | |
6213 | derr << "mirror info parse error" << dendl; | |
6214 | return -CEPHFS_EINVAL; | |
6215 | } | |
6216 | ||
6217 | cluster_id = match[1]; | |
6218 | fs_id = match[2]; | |
6219 | dout(20) << " parsed cluster_id=" << cluster_id << ", fs_id=" << fs_id << dendl; | |
6220 | return 0; | |
6221 | } | |
6222 | ||
6223 | int Server::mirror_info_xattr_validate(CInode *cur, const InodeStoreBase::xattr_map_const_ptr xattrs, | |
6224 | XattrOp *xattr_op) { | |
6225 | if (!cur->is_root()) { | |
6226 | return -CEPHFS_EINVAL; | |
6227 | } | |
6228 | ||
6229 | int v1 = xattr_validate(cur, xattrs, Server::MirrorXattrInfo::CLUSTER_ID, xattr_op->op, xattr_op->flags); | |
6230 | int v2 = xattr_validate(cur, xattrs, Server::MirrorXattrInfo::FS_ID, xattr_op->op, xattr_op->flags); | |
6231 | if (v1 != v2) { | |
6232 | derr << "inconsistent mirror info state (" << v1 << "," << v2 << ")" << dendl; | |
6233 | return -CEPHFS_EINVAL; | |
6234 | } | |
6235 | ||
6236 | if (v1 < 0) { | |
6237 | return v1; | |
6238 | } | |
6239 | ||
6240 | if (xattr_op->op == CEPH_MDS_OP_RMXATTR) { | |
6241 | return 0; | |
6242 | } | |
6243 | ||
6244 | std::string cluster_id; | |
6245 | std::string fs_id; | |
6246 | int r = parse_mirror_info_xattr(xattr_op->xattr_name, xattr_op->xattr_value.to_str(), | |
6247 | cluster_id, fs_id); | |
6248 | if (r < 0) { | |
6249 | return r; | |
6250 | } | |
6251 | ||
6252 | xattr_op->xinfo = std::make_unique<MirrorXattrInfo>(cluster_id, fs_id); | |
6253 | return 0; | |
6254 | } | |
6255 | ||
6256 | void Server::mirror_info_setxattr_handler(CInode *cur, InodeStoreBase::xattr_map_ptr xattrs, | |
6257 | const XattrOp &xattr_op) { | |
6258 | auto mirror_info = dynamic_cast<MirrorXattrInfo&>(*(xattr_op.xinfo)); | |
6259 | ||
6260 | bufferlist bl; | |
6261 | bl.append(mirror_info.cluster_id.c_str(), mirror_info.cluster_id.length()); | |
6262 | xattr_set(xattrs, Server::MirrorXattrInfo::CLUSTER_ID, bl); | |
6263 | ||
6264 | bl.clear(); | |
6265 | bl.append(mirror_info.fs_id.c_str(), mirror_info.fs_id.length()); | |
6266 | xattr_set(xattrs, Server::MirrorXattrInfo::FS_ID, bl); | |
6267 | } | |
6268 | ||
6269 | void Server::mirror_info_removexattr_handler(CInode *cur, InodeStoreBase::xattr_map_ptr xattrs, | |
6270 | const XattrOp &xattr_op) { | |
6271 | xattr_rm(xattrs, Server::MirrorXattrInfo::CLUSTER_ID); | |
6272 | xattr_rm(xattrs, Server::MirrorXattrInfo::FS_ID); | |
6273 | } | |
7c673cae FG |
6274 | |
6275 | void Server::handle_client_setxattr(MDRequestRef& mdr) | |
6276 | { | |
9f95a23c | 6277 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 6278 | string name(req->get_path2()); |
7c673cae | 6279 | |
f67539c2 TL |
6280 | // is a ceph virtual xattr? |
6281 | if (is_ceph_vxattr(name)) { | |
9f95a23c TL |
6282 | // can't use rdlock_path_pin_ref because we need to xlock snaplock/policylock |
6283 | CInode *cur = try_get_auth_inode(mdr, req->get_filepath().get_ino()); | |
6284 | if (!cur) | |
6285 | return; | |
6286 | ||
6287 | handle_set_vxattr(mdr, cur); | |
6288 | return; | |
6289 | } | |
6290 | ||
f67539c2 TL |
6291 | if (!is_allowed_ceph_xattr(name)) { |
6292 | respond_to_request(mdr, -CEPHFS_EINVAL); | |
6293 | return; | |
6294 | } | |
6295 | ||
9f95a23c | 6296 | CInode *cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
6297 | if (!cur) |
6298 | return; | |
6299 | ||
6300 | if (mdr->snapid != CEPH_NOSNAP) { | |
f67539c2 | 6301 | respond_to_request(mdr, -CEPHFS_EROFS); |
7c673cae FG |
6302 | return; |
6303 | } | |
6304 | ||
6305 | int flags = req->head.args.setxattr.flags; | |
6306 | ||
9f95a23c | 6307 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
6308 | lov.add_xlock(&cur->xattrlock); |
6309 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
6310 | return; |
6311 | ||
6312 | if (!check_access(mdr, cur, MAY_WRITE)) | |
6313 | return; | |
6314 | ||
7c673cae FG |
6315 | size_t len = req->get_data().length(); |
6316 | size_t inc = len + name.length(); | |
6317 | ||
f67539c2 TL |
6318 | auto handler = Server::get_xattr_or_default_handler(name); |
6319 | const auto& pxattrs = cur->get_projected_xattrs(); | |
6320 | if (pxattrs) { | |
6321 | // check xattrs kv pairs size | |
6322 | size_t cur_xattrs_size = 0; | |
6323 | for (const auto& p : *pxattrs) { | |
6324 | if ((flags & CEPH_XATTR_REPLACE) && name.compare(p.first) == 0) { | |
6325 | continue; | |
6326 | } | |
6327 | cur_xattrs_size += p.first.length() + p.second.length(); | |
7c673cae | 6328 | } |
7c673cae | 6329 | |
f67539c2 TL |
6330 | if (((cur_xattrs_size + inc) > g_conf()->mds_max_xattr_pairs_size)) { |
6331 | dout(10) << "xattr kv pairs size too big. cur_xattrs_size " | |
6332 | << cur_xattrs_size << ", inc " << inc << dendl; | |
6333 | respond_to_request(mdr, -CEPHFS_ENOSPC); | |
6334 | return; | |
6335 | } | |
7c673cae FG |
6336 | } |
6337 | ||
f67539c2 TL |
6338 | XattrOp xattr_op(CEPH_MDS_OP_SETXATTR, name, req->get_data(), flags); |
6339 | int r = std::invoke(handler->validate, this, cur, pxattrs, &xattr_op); | |
6340 | if (r < 0) { | |
6341 | respond_to_request(mdr, r); | |
7c673cae FG |
6342 | return; |
6343 | } | |
6344 | ||
6345 | dout(10) << "setxattr '" << name << "' len " << len << " on " << *cur << dendl; | |
6346 | ||
6347 | // project update | |
f67539c2 TL |
6348 | auto pi = cur->project_inode(mdr, true); |
6349 | pi.inode->version = cur->pre_dirty(); | |
6350 | pi.inode->ctime = mdr->get_op_stamp(); | |
6351 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
6352 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
6353 | if (name == "encryption.ctx"sv) | |
6354 | pi.inode->fscrypt = true; | |
6355 | pi.inode->change_attr++; | |
6356 | pi.inode->xattr_version++; | |
6357 | ||
94b18763 | 6358 | if ((flags & CEPH_XATTR_REMOVE)) { |
f67539c2 | 6359 | std::invoke(handler->removexattr, this, cur, pi.xattrs, xattr_op); |
94b18763 | 6360 | } else { |
f67539c2 | 6361 | std::invoke(handler->setxattr, this, cur, pi.xattrs, xattr_op); |
7c673cae FG |
6362 | } |
6363 | ||
6364 | // log + wait | |
6365 | mdr->ls = mdlog->get_current_segment(); | |
6366 | EUpdate *le = new EUpdate(mdlog, "setxattr"); | |
6367 | mdlog->start_entry(le); | |
6368 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6369 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
6370 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
6371 | ||
6372 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); | |
6373 | } | |
6374 | ||
6375 | void Server::handle_client_removexattr(MDRequestRef& mdr) | |
6376 | { | |
9f95a23c | 6377 | const cref_t<MClientRequest> &req = mdr->client_request; |
94b18763 | 6378 | std::string name(req->get_path2()); |
11fdf7f2 | 6379 | |
f67539c2 TL |
6380 | // is a ceph virtual xattr? |
6381 | if (is_ceph_vxattr(name)) { | |
9f95a23c TL |
6382 | // can't use rdlock_path_pin_ref because we need to xlock snaplock/policylock |
6383 | CInode *cur = try_get_auth_inode(mdr, req->get_filepath().get_ino()); | |
6384 | if (!cur) | |
6385 | return; | |
6386 | ||
6387 | handle_remove_vxattr(mdr, cur); | |
6388 | return; | |
6389 | } | |
6390 | ||
f67539c2 TL |
6391 | if (!is_allowed_ceph_xattr(name)) { |
6392 | respond_to_request(mdr, -CEPHFS_EINVAL); | |
6393 | return; | |
6394 | } | |
6395 | ||
9f95a23c | 6396 | CInode* cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
6397 | if (!cur) |
6398 | return; | |
6399 | ||
6400 | if (mdr->snapid != CEPH_NOSNAP) { | |
f67539c2 | 6401 | respond_to_request(mdr, -CEPHFS_EROFS); |
7c673cae FG |
6402 | return; |
6403 | } | |
6404 | ||
9f95a23c | 6405 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
6406 | lov.add_xlock(&cur->xattrlock); |
6407 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
6408 | return; |
6409 | ||
f67539c2 TL |
6410 | |
6411 | auto handler = Server::get_xattr_or_default_handler(name); | |
6412 | bufferlist bl; | |
6413 | XattrOp xattr_op(CEPH_MDS_OP_RMXATTR, name, bl, 0); | |
6414 | ||
6415 | const auto& pxattrs = cur->get_projected_xattrs(); | |
6416 | int r = std::invoke(handler->validate, this, cur, pxattrs, &xattr_op); | |
6417 | if (r < 0) { | |
6418 | respond_to_request(mdr, r); | |
7c673cae FG |
6419 | return; |
6420 | } | |
6421 | ||
6422 | dout(10) << "removexattr '" << name << "' on " << *cur << dendl; | |
6423 | ||
6424 | // project update | |
f67539c2 TL |
6425 | auto pi = cur->project_inode(mdr, true); |
6426 | pi.inode->version = cur->pre_dirty(); | |
6427 | pi.inode->ctime = mdr->get_op_stamp(); | |
6428 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
6429 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
6430 | pi.inode->change_attr++; | |
6431 | pi.inode->xattr_version++; | |
6432 | std::invoke(handler->removexattr, this, cur, pi.xattrs, xattr_op); | |
7c673cae FG |
6433 | |
6434 | // log + wait | |
6435 | mdr->ls = mdlog->get_current_segment(); | |
6436 | EUpdate *le = new EUpdate(mdlog, "removexattr"); | |
6437 | mdlog->start_entry(le); | |
6438 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6439 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
6440 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
6441 | ||
6442 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); | |
6443 | } | |
6444 | ||
1d09f67e TL |
6445 | void Server::handle_client_getvxattr(MDRequestRef& mdr) |
6446 | { | |
6447 | const auto& req = mdr->client_request; | |
6448 | string xattr_name{req->get_path2()}; | |
6449 | ||
6450 | // is a ceph virtual xattr? | |
6451 | if (!is_ceph_vxattr(xattr_name)) { | |
6452 | respond_to_request(mdr, -CEPHFS_ENODATA); | |
6453 | return; | |
6454 | } | |
6455 | ||
6456 | CInode *cur = rdlock_path_pin_ref(mdr, true, false); | |
6457 | if (!cur) { | |
6458 | return; | |
6459 | } | |
6460 | ||
6461 | if (is_ceph_dir_vxattr(xattr_name)) { | |
6462 | if (!cur->is_dir()) { | |
6463 | respond_to_request(mdr, -CEPHFS_ENODATA); | |
6464 | return; | |
6465 | } | |
6466 | } else if (is_ceph_file_vxattr(xattr_name)) { | |
6467 | if (cur->is_dir()) { | |
6468 | respond_to_request(mdr, -CEPHFS_ENODATA); | |
6469 | return; | |
6470 | } | |
6471 | } | |
6472 | ||
6473 | CachedStackStringStream css; | |
6474 | int r = 0; | |
6475 | ceph::bufferlist bl; | |
6476 | // handle these vxattrs | |
6477 | if ((xattr_name.substr(0, 15) == "ceph.dir.layout"sv) || | |
6478 | (xattr_name.substr(0, 16) == "ceph.file.layout"sv)) { | |
6479 | std::string layout_field; | |
6480 | ||
6481 | struct layout_xattr_info_t { | |
6482 | enum class InheritanceStatus : uint32_t { | |
6483 | DEFAULT = 0, | |
6484 | SET = 1, | |
6485 | INHERITED = 2 | |
6486 | }; | |
6487 | ||
6488 | const file_layout_t layout; | |
6489 | const InheritanceStatus status; | |
6490 | ||
6491 | layout_xattr_info_t(const file_layout_t& l, InheritanceStatus inh) | |
6492 | : layout(l), status(inh) { } | |
6493 | ||
6494 | static std::string status_to_string(InheritanceStatus status) { | |
6495 | switch (status) { | |
6496 | case InheritanceStatus::DEFAULT: return "default"s; | |
6497 | case InheritanceStatus::SET: return "set"s; | |
6498 | case InheritanceStatus::INHERITED: return "inherited"s; | |
6499 | default: return "unknown"s; | |
6500 | } | |
6501 | } | |
6502 | }; | |
6503 | ||
6504 | auto is_default_layout = [&](const file_layout_t& layout) -> bool { | |
6505 | return (layout == mdcache->default_file_layout); | |
6506 | }; | |
6507 | auto get_inherited_layout = [&](CInode *cur) -> layout_xattr_info_t { | |
6508 | auto orig_in = cur; | |
6509 | ||
6510 | while (cur) { | |
6511 | if (cur->get_projected_inode()->has_layout()) { | |
6512 | auto& curr_layout = cur->get_projected_inode()->layout; | |
6513 | if (is_default_layout(curr_layout)) { | |
6514 | return {curr_layout, layout_xattr_info_t::InheritanceStatus::DEFAULT}; | |
6515 | } | |
6516 | if (cur == orig_in) { | |
6517 | // we've found a new layout at this inode | |
6518 | return {curr_layout, layout_xattr_info_t::InheritanceStatus::SET}; | |
6519 | } else { | |
6520 | return {curr_layout, layout_xattr_info_t::InheritanceStatus::INHERITED}; | |
6521 | } | |
6522 | } | |
6523 | ||
6524 | if (cur->is_root()) { | |
6525 | break; | |
6526 | } | |
6527 | ||
6528 | cur = cur->get_projected_parent_dir()->get_inode(); | |
6529 | } | |
6530 | mds->clog->error() << "no layout found at root dir!"; | |
6531 | ceph_abort("no layout found at root dir! something is really messed up with layouts!"); | |
6532 | }; | |
6533 | ||
6534 | if (xattr_name == "ceph.dir.layout.json"sv || | |
6535 | xattr_name == "ceph.file.layout.json"sv) { | |
6536 | // fetch layout only for valid xattr_name | |
6537 | const auto lxi = get_inherited_layout(cur); | |
6538 | ||
6539 | *css << "{\"stripe_unit\": " << lxi.layout.stripe_unit | |
6540 | << ", \"stripe_count\": " << lxi.layout.stripe_count | |
6541 | << ", \"object_size\": " << lxi.layout.object_size | |
6542 | << ", \"pool_name\": "; | |
6543 | mds->objecter->with_osdmap([lxi, &css](const OSDMap& o) { | |
6544 | *css << "\""; | |
6545 | if (o.have_pg_pool(lxi.layout.pool_id)) { | |
6546 | *css << o.get_pool_name(lxi.layout.pool_id); | |
6547 | } | |
6548 | *css << "\""; | |
6549 | }); | |
6550 | *css << ", \"pool_id\": " << (uint64_t)lxi.layout.pool_id; | |
6551 | *css << ", \"pool_namespace\": \"" << lxi.layout.pool_ns << "\""; | |
6552 | *css << ", \"inheritance\": \"@" | |
6553 | << layout_xattr_info_t::status_to_string(lxi.status) << "\"}"; | |
6554 | } else if ((xattr_name == "ceph.dir.layout.pool_name"sv) || | |
6555 | (xattr_name == "ceph.file.layout.pool_name"sv)) { | |
6556 | // fetch layout only for valid xattr_name | |
6557 | const auto lxi = get_inherited_layout(cur); | |
6558 | mds->objecter->with_osdmap([lxi, &css](const OSDMap& o) { | |
6559 | if (o.have_pg_pool(lxi.layout.pool_id)) { | |
6560 | *css << o.get_pool_name(lxi.layout.pool_id); | |
6561 | } | |
6562 | }); | |
6563 | } else if ((xattr_name == "ceph.dir.layout.pool_id"sv) || | |
6564 | (xattr_name == "ceph.file.layout.pool_id"sv)) { | |
6565 | // fetch layout only for valid xattr_name | |
6566 | const auto lxi = get_inherited_layout(cur); | |
6567 | *css << (uint64_t)lxi.layout.pool_id; | |
6568 | } else { | |
6569 | r = -CEPHFS_ENODATA; // no such attribute | |
6570 | } | |
6571 | } else if (xattr_name.substr(0, 12) == "ceph.dir.pin"sv) { | |
6572 | if (xattr_name == "ceph.dir.pin"sv) { | |
6573 | *css << cur->get_projected_inode()->export_pin; | |
6574 | } else if (xattr_name == "ceph.dir.pin.random"sv) { | |
6575 | *css << cur->get_projected_inode()->export_ephemeral_random_pin; | |
6576 | } else if (xattr_name == "ceph.dir.pin.distributed"sv) { | |
6577 | *css << cur->get_projected_inode()->export_ephemeral_distributed_pin; | |
6578 | } else { | |
6579 | // otherwise respond as invalid request | |
6580 | // since we only handle ceph vxattrs here | |
6581 | r = -CEPHFS_ENODATA; // no such attribute | |
6582 | } | |
6583 | } else { | |
6584 | // otherwise respond as invalid request | |
6585 | // since we only handle ceph vxattrs here | |
6586 | r = -CEPHFS_ENODATA; // no such attribute | |
6587 | } | |
6588 | ||
6589 | if (r == 0) { | |
6590 | ENCODE_START(1, 1, bl); | |
6591 | encode(css->strv(), bl); | |
6592 | ENCODE_FINISH(bl); | |
6593 | mdr->reply_extra_bl = bl; | |
6594 | } | |
6595 | ||
6596 | respond_to_request(mdr, r); | |
6597 | } | |
7c673cae FG |
6598 | |
6599 | // ================================================================= | |
6600 | // DIRECTORY and NAMESPACE OPS | |
6601 | ||
6602 | ||
6603 | // ------------------------------------------------ | |
6604 | ||
6605 | // MKNOD | |
6606 | ||
6607 | class C_MDS_mknod_finish : public ServerLogContext { | |
6608 | CDentry *dn; | |
6609 | CInode *newi; | |
6610 | public: | |
6611 | C_MDS_mknod_finish(Server *s, MDRequestRef& r, CDentry *d, CInode *ni) : | |
6612 | ServerLogContext(s, r), dn(d), newi(ni) {} | |
6613 | void finish(int r) override { | |
11fdf7f2 | 6614 | ceph_assert(r == 0); |
7c673cae FG |
6615 | |
6616 | // link the inode | |
6617 | dn->pop_projected_linkage(); | |
6618 | ||
6619 | // be a bit hacky with the inode version, here.. we decrement it | |
6620 | // just to keep mark_dirty() happen. (we didn't bother projecting | |
6621 | // a new version of hte inode since it's just been created) | |
f67539c2 | 6622 | newi->mark_dirty(mdr->ls); |
28e407b8 | 6623 | newi->mark_dirty_parent(mdr->ls, true); |
7c673cae FG |
6624 | |
6625 | // mkdir? | |
f67539c2 | 6626 | if (newi->is_dir()) { |
7c673cae | 6627 | CDir *dir = newi->get_dirfrag(frag_t()); |
11fdf7f2 | 6628 | ceph_assert(dir); |
f67539c2 | 6629 | dir->mark_dirty(mdr->ls); |
7c673cae FG |
6630 | dir->mark_new(mdr->ls); |
6631 | } | |
6632 | ||
6633 | mdr->apply(); | |
6634 | ||
6635 | MDRequestRef null_ref; | |
6636 | get_mds()->mdcache->send_dentry_link(dn, null_ref); | |
6637 | ||
f67539c2 | 6638 | if (newi->is_file()) { |
7c673cae | 6639 | get_mds()->locker->share_inode_max_size(newi); |
f67539c2 | 6640 | } else if (newi->is_dir()) { |
f6b5b4d7 | 6641 | // We do this now so that the linkages on the new directory are stable. |
f67539c2 | 6642 | newi->maybe_ephemeral_rand(); |
f6b5b4d7 | 6643 | } |
7c673cae FG |
6644 | |
6645 | // hit pop | |
11fdf7f2 | 6646 | get_mds()->balancer->hit_inode(newi, META_POP_IWR); |
7c673cae FG |
6647 | |
6648 | // reply | |
6649 | server->respond_to_request(mdr, 0); | |
6650 | } | |
6651 | }; | |
6652 | ||
6653 | ||
6654 | void Server::handle_client_mknod(MDRequestRef& mdr) | |
6655 | { | |
9f95a23c | 6656 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 6657 | client_t client = mdr->get_client(); |
9f95a23c TL |
6658 | |
6659 | unsigned mode = req->head.args.mknod.mode; | |
6660 | if ((mode & S_IFMT) == 0) | |
6661 | mode |= S_IFREG; | |
6662 | ||
6663 | mdr->disable_lock_cache(); | |
6664 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true, false, S_ISREG(mode)); | |
6665 | if (!dn) | |
7c673cae FG |
6666 | return; |
6667 | ||
9f95a23c TL |
6668 | CDir *dir = dn->get_dir(); |
6669 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
6670 | if (!check_access(mdr, diri, MAY_WRITE)) |
6671 | return; | |
20effc67 TL |
6672 | if (!check_fragment_space(mdr, dir)) |
6673 | return; | |
6674 | if (!check_dir_max_entries(mdr, dir)) | |
7c673cae FG |
6675 | return; |
6676 | ||
f67539c2 TL |
6677 | ceph_assert(dn->get_projected_linkage()->is_null()); |
6678 | if (req->get_alternate_name().size() > alternate_name_max) { | |
6679 | dout(10) << " alternate_name longer than " << alternate_name_max << dendl; | |
6680 | respond_to_request(mdr, -CEPHFS_ENAMETOOLONG); | |
6681 | return; | |
6682 | } | |
6683 | dn->set_alternate_name(req->get_alternate_name()); | |
6684 | ||
7c673cae FG |
6685 | // set layout |
6686 | file_layout_t layout; | |
9f95a23c TL |
6687 | if (mdr->dir_layout != file_layout_t()) |
6688 | layout = mdr->dir_layout; | |
7c673cae FG |
6689 | else |
6690 | layout = mdcache->default_file_layout; | |
6691 | ||
11fdf7f2 TL |
6692 | CInode *newi = prepare_new_inode(mdr, dn->get_dir(), inodeno_t(req->head.ino), mode, &layout); |
6693 | ceph_assert(newi); | |
7c673cae FG |
6694 | |
6695 | dn->push_projected_linkage(newi); | |
6696 | ||
f67539c2 TL |
6697 | auto _inode = newi->_get_inode(); |
6698 | _inode->version = dn->pre_dirty(); | |
6699 | _inode->rdev = req->head.args.mknod.rdev; | |
6700 | _inode->rstat.rfiles = 1; | |
6701 | _inode->accounted_rstat = _inode->rstat; | |
7c673cae | 6702 | if (layout.pool_id != mdcache->default_file_layout.pool_id) |
f67539c2 TL |
6703 | _inode->add_old_pool(mdcache->default_file_layout.pool_id); |
6704 | _inode->update_backtrace(); | |
7c673cae | 6705 | |
11fdf7f2 TL |
6706 | snapid_t follows = mdcache->get_global_snaprealm()->get_newest_seq(); |
6707 | SnapRealm *realm = dn->get_dir()->inode->find_snaprealm(); | |
6708 | ceph_assert(follows >= realm->get_newest_seq()); | |
6709 | ||
7c673cae FG |
6710 | // if the client created a _regular_ file via MKNOD, it's highly likely they'll |
6711 | // want to write to it (e.g., if they are reexporting NFS) | |
f67539c2 | 6712 | if (S_ISREG(_inode->mode)) { |
7c673cae FG |
6713 | // issue a cap on the file |
6714 | int cmode = CEPH_FILE_MODE_RDWR; | |
9f95a23c | 6715 | Capability *cap = mds->locker->issue_new_caps(newi, cmode, mdr, realm); |
7c673cae FG |
6716 | if (cap) { |
6717 | cap->set_wanted(0); | |
6718 | ||
6719 | // put locks in excl mode | |
6720 | newi->filelock.set_state(LOCK_EXCL); | |
6721 | newi->authlock.set_state(LOCK_EXCL); | |
6722 | newi->xattrlock.set_state(LOCK_EXCL); | |
a8e16298 TL |
6723 | |
6724 | dout(15) << " setting a client_range too, since this is a regular file" << dendl; | |
f67539c2 TL |
6725 | _inode->client_ranges[client].range.first = 0; |
6726 | _inode->client_ranges[client].range.last = _inode->layout.stripe_unit; | |
6727 | _inode->client_ranges[client].follows = follows; | |
f91f0fd5 | 6728 | newi->mark_clientwriteable(); |
a8e16298 | 6729 | cap->mark_clientwriteable(); |
7c673cae FG |
6730 | } |
6731 | } | |
6732 | ||
11fdf7f2 | 6733 | ceph_assert(dn->first == follows + 1); |
7c673cae FG |
6734 | newi->first = dn->first; |
6735 | ||
f67539c2 | 6736 | dout(10) << "mknod mode " << _inode->mode << " rdev " << _inode->rdev << dendl; |
7c673cae FG |
6737 | |
6738 | // prepare finisher | |
6739 | mdr->ls = mdlog->get_current_segment(); | |
6740 | EUpdate *le = new EUpdate(mdlog, "mknod"); | |
6741 | mdlog->start_entry(le); | |
6742 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6743 | journal_allocated_inos(mdr, &le->metablob); | |
6744 | ||
6745 | mdcache->predirty_journal_parents(mdr, &le->metablob, newi, dn->get_dir(), | |
6746 | PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
6747 | le->metablob.add_primary_dentry(dn, newi, true, true, true); | |
6748 | ||
6749 | journal_and_reply(mdr, newi, dn, le, new C_MDS_mknod_finish(this, mdr, dn, newi)); | |
92f5a8d4 | 6750 | mds->balancer->maybe_fragment(dn->get_dir(), false); |
7c673cae FG |
6751 | } |
6752 | ||
6753 | ||
6754 | ||
6755 | // MKDIR | |
6756 | /* This function takes responsibility for the passed mdr*/ | |
6757 | void Server::handle_client_mkdir(MDRequestRef& mdr) | |
6758 | { | |
9f95a23c | 6759 | const cref_t<MClientRequest> &req = mdr->client_request; |
91327a77 | 6760 | |
9f95a23c TL |
6761 | mdr->disable_lock_cache(); |
6762 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true); | |
6763 | if (!dn) | |
7c673cae | 6764 | return; |
9f95a23c | 6765 | |
7c673cae FG |
6766 | CDir *dir = dn->get_dir(); |
6767 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
6768 | |
6769 | // mkdir check access | |
6770 | if (!check_access(mdr, diri, MAY_WRITE)) | |
6771 | return; | |
6772 | ||
6773 | if (!check_fragment_space(mdr, dir)) | |
6774 | return; | |
20effc67 TL |
6775 | if (!check_dir_max_entries(mdr, dir)) |
6776 | return; | |
7c673cae | 6777 | |
f67539c2 TL |
6778 | ceph_assert(dn->get_projected_linkage()->is_null()); |
6779 | if (req->get_alternate_name().size() > alternate_name_max) { | |
6780 | dout(10) << " alternate_name longer than " << alternate_name_max << dendl; | |
6781 | respond_to_request(mdr, -CEPHFS_ENAMETOOLONG); | |
6782 | return; | |
6783 | } | |
6784 | dn->set_alternate_name(req->get_alternate_name()); | |
6785 | ||
7c673cae | 6786 | // new inode |
7c673cae FG |
6787 | unsigned mode = req->head.args.mkdir.mode; |
6788 | mode &= ~S_IFMT; | |
6789 | mode |= S_IFDIR; | |
9f95a23c | 6790 | CInode *newi = prepare_new_inode(mdr, dir, inodeno_t(req->head.ino), mode); |
11fdf7f2 | 6791 | ceph_assert(newi); |
7c673cae FG |
6792 | |
6793 | // it's a directory. | |
6794 | dn->push_projected_linkage(newi); | |
6795 | ||
f67539c2 TL |
6796 | auto _inode = newi->_get_inode(); |
6797 | _inode->version = dn->pre_dirty(); | |
6798 | _inode->rstat.rsubdirs = 1; | |
6799 | _inode->accounted_rstat = _inode->rstat; | |
6800 | _inode->update_backtrace(); | |
7c673cae | 6801 | |
11fdf7f2 TL |
6802 | snapid_t follows = mdcache->get_global_snaprealm()->get_newest_seq(); |
6803 | SnapRealm *realm = dn->get_dir()->inode->find_snaprealm(); | |
6804 | ceph_assert(follows >= realm->get_newest_seq()); | |
6805 | ||
7c673cae | 6806 | dout(12) << " follows " << follows << dendl; |
11fdf7f2 | 6807 | ceph_assert(dn->first == follows + 1); |
7c673cae FG |
6808 | newi->first = dn->first; |
6809 | ||
6810 | // ...and that new dir is empty. | |
6811 | CDir *newdir = newi->get_or_open_dirfrag(mdcache, frag_t()); | |
6812 | newdir->state_set(CDir::STATE_CREATING); | |
6813 | newdir->mark_complete(); | |
f67539c2 | 6814 | newdir->_get_fnode()->version = newdir->pre_dirty(); |
7c673cae FG |
6815 | |
6816 | // prepare finisher | |
6817 | mdr->ls = mdlog->get_current_segment(); | |
6818 | EUpdate *le = new EUpdate(mdlog, "mkdir"); | |
6819 | mdlog->start_entry(le); | |
6820 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6821 | journal_allocated_inos(mdr, &le->metablob); | |
6822 | mdcache->predirty_journal_parents(mdr, &le->metablob, newi, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
6823 | le->metablob.add_primary_dentry(dn, newi, true, true); | |
6824 | le->metablob.add_new_dir(newdir); // dirty AND complete AND new | |
6825 | ||
6826 | // issue a cap on the directory | |
6827 | int cmode = CEPH_FILE_MODE_RDWR; | |
9f95a23c | 6828 | Capability *cap = mds->locker->issue_new_caps(newi, cmode, mdr, realm); |
7c673cae FG |
6829 | if (cap) { |
6830 | cap->set_wanted(0); | |
6831 | ||
6832 | // put locks in excl mode | |
6833 | newi->filelock.set_state(LOCK_EXCL); | |
6834 | newi->authlock.set_state(LOCK_EXCL); | |
6835 | newi->xattrlock.set_state(LOCK_EXCL); | |
6836 | } | |
6837 | ||
6838 | // make sure this inode gets into the journal | |
6839 | le->metablob.add_opened_ino(newi->ino()); | |
7c673cae FG |
6840 | |
6841 | journal_and_reply(mdr, newi, dn, le, new C_MDS_mknod_finish(this, mdr, dn, newi)); | |
81eedcae TL |
6842 | |
6843 | // We hit_dir (via hit_inode) in our finish callback, but by then we might | |
6844 | // have overshot the split size (multiple mkdir in flight), so here is | |
6845 | // an early chance to split the dir if this mkdir makes it oversized. | |
6846 | mds->balancer->maybe_fragment(dir, false); | |
7c673cae FG |
6847 | } |
6848 | ||
6849 | ||
6850 | // SYMLINK | |
6851 | ||
6852 | void Server::handle_client_symlink(MDRequestRef& mdr) | |
6853 | { | |
f67539c2 TL |
6854 | const auto& req = mdr->client_request; |
6855 | ||
9f95a23c TL |
6856 | mdr->disable_lock_cache(); |
6857 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true); | |
6858 | if (!dn) | |
7c673cae | 6859 | return; |
9f95a23c | 6860 | |
7c673cae FG |
6861 | CDir *dir = dn->get_dir(); |
6862 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
6863 | |
6864 | if (!check_access(mdr, diri, MAY_WRITE)) | |
9f95a23c | 6865 | return; |
7c673cae FG |
6866 | if (!check_fragment_space(mdr, dir)) |
6867 | return; | |
20effc67 TL |
6868 | if (!check_dir_max_entries(mdr, dir)) |
6869 | return; | |
7c673cae | 6870 | |
f67539c2 TL |
6871 | ceph_assert(dn->get_projected_linkage()->is_null()); |
6872 | if (req->get_alternate_name().size() > alternate_name_max) { | |
6873 | dout(10) << " alternate_name longer than " << alternate_name_max << dendl; | |
6874 | respond_to_request(mdr, -CEPHFS_ENAMETOOLONG); | |
6875 | } | |
6876 | dn->set_alternate_name(req->get_alternate_name()); | |
9f95a23c | 6877 | |
7c673cae | 6878 | unsigned mode = S_IFLNK | 0777; |
9f95a23c | 6879 | CInode *newi = prepare_new_inode(mdr, dir, inodeno_t(req->head.ino), mode); |
11fdf7f2 | 6880 | ceph_assert(newi); |
7c673cae FG |
6881 | |
6882 | // it's a symlink | |
6883 | dn->push_projected_linkage(newi); | |
6884 | ||
11fdf7f2 | 6885 | newi->symlink = req->get_path2(); |
f67539c2 TL |
6886 | auto _inode = newi->_get_inode(); |
6887 | _inode->version = dn->pre_dirty(); | |
6888 | _inode->size = newi->symlink.length(); | |
6889 | _inode->rstat.rbytes = _inode->size; | |
6890 | _inode->rstat.rfiles = 1; | |
6891 | _inode->accounted_rstat = _inode->rstat; | |
6892 | _inode->update_backtrace(); | |
7c673cae FG |
6893 | |
6894 | newi->first = dn->first; | |
6895 | ||
6896 | // prepare finisher | |
6897 | mdr->ls = mdlog->get_current_segment(); | |
6898 | EUpdate *le = new EUpdate(mdlog, "symlink"); | |
6899 | mdlog->start_entry(le); | |
6900 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6901 | journal_allocated_inos(mdr, &le->metablob); | |
6902 | mdcache->predirty_journal_parents(mdr, &le->metablob, newi, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
6903 | le->metablob.add_primary_dentry(dn, newi, true, true); | |
6904 | ||
6905 | journal_and_reply(mdr, newi, dn, le, new C_MDS_mknod_finish(this, mdr, dn, newi)); | |
92f5a8d4 | 6906 | mds->balancer->maybe_fragment(dir, false); |
7c673cae FG |
6907 | } |
6908 | ||
6909 | ||
6910 | ||
6911 | ||
6912 | ||
6913 | // LINK | |
6914 | ||
6915 | void Server::handle_client_link(MDRequestRef& mdr) | |
6916 | { | |
9f95a23c | 6917 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
6918 | |
6919 | dout(7) << "handle_client_link " << req->get_filepath() | |
6920 | << " to " << req->get_filepath2() | |
6921 | << dendl; | |
6922 | ||
9f95a23c | 6923 | mdr->disable_lock_cache(); |
7c673cae | 6924 | |
9f95a23c TL |
6925 | CDentry *destdn; |
6926 | CInode *targeti; | |
6927 | ||
6928 | if (req->get_filepath2().depth() == 0) { | |
6929 | targeti = mdcache->get_inode(req->get_filepath2().get_ino()); | |
6930 | if (!targeti) { | |
f67539c2 | 6931 | dout(10) << "CEPHFS_ESTALE on path2, attempting recovery" << dendl; |
2a845540 TL |
6932 | inodeno_t ino = req->get_filepath2().get_ino(); |
6933 | mdcache->find_ino_peers(ino, new C_MDS_TryFindInode(this, mdr, mdcache, ino)); | |
9f95a23c TL |
6934 | return; |
6935 | } | |
6936 | mdr->pin(targeti); | |
6937 | ||
6938 | if (!(mdr->locking_state & MutationImpl::SNAP2_LOCKED)) { | |
6939 | CDentry *pdn = targeti->get_projected_parent_dn(); | |
6940 | if (!pdn) { | |
6941 | dout(7) << "target has no parent dn, failing..." << dendl; | |
f67539c2 | 6942 | respond_to_request(mdr, -CEPHFS_EINVAL); |
9f95a23c TL |
6943 | return; |
6944 | } | |
6945 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr, 1)) | |
6946 | return; | |
6947 | mdr->locking_state |= MutationImpl::SNAP2_LOCKED; | |
6948 | } | |
6949 | ||
6950 | destdn = rdlock_path_xlock_dentry(mdr, false); | |
6951 | if (!destdn) | |
6952 | return; | |
9f95a23c TL |
6953 | } else { |
6954 | auto ret = rdlock_two_paths_xlock_destdn(mdr, false); | |
6955 | destdn = ret.first; | |
6956 | if (!destdn) | |
6957 | return; | |
6958 | ||
6959 | if (!destdn->get_projected_linkage()->is_null()) { | |
f67539c2 | 6960 | respond_to_request(mdr, -CEPHFS_EEXIST); |
9f95a23c TL |
6961 | return; |
6962 | } | |
6963 | ||
6964 | targeti = ret.second->get_projected_linkage()->get_inode(); | |
6965 | } | |
6966 | ||
f67539c2 TL |
6967 | ceph_assert(destdn->get_projected_linkage()->is_null()); |
6968 | if (req->get_alternate_name().size() > alternate_name_max) { | |
6969 | dout(10) << " alternate_name longer than " << alternate_name_max << dendl; | |
6970 | respond_to_request(mdr, -CEPHFS_ENAMETOOLONG); | |
6971 | return; | |
6972 | } | |
6973 | destdn->set_alternate_name(req->get_alternate_name()); | |
6974 | ||
9f95a23c TL |
6975 | if (targeti->is_dir()) { |
6976 | dout(7) << "target is a dir, failing..." << dendl; | |
f67539c2 | 6977 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
6978 | return; |
6979 | } | |
6980 | ||
9f95a23c TL |
6981 | CDir *dir = destdn->get_dir(); |
6982 | dout(7) << "handle_client_link link " << destdn->get_name() << " in " << *dir << dendl; | |
7c673cae | 6983 | dout(7) << "target is " << *targeti << dendl; |
9f95a23c TL |
6984 | |
6985 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { | |
6986 | MutationImpl::LockOpVec lov; | |
6987 | lov.add_xlock(&targeti->snaplock); | |
6988 | lov.add_xlock(&targeti->linklock); | |
6989 | ||
6990 | if (!mds->locker->acquire_locks(mdr, lov)) | |
181888fb | 6991 | return; |
7c673cae | 6992 | |
9f95a23c TL |
6993 | mdr->locking_state |= MutationImpl::ALL_LOCKED; |
6994 | } | |
7c673cae | 6995 | |
9f95a23c TL |
6996 | if (targeti->get_projected_inode()->nlink == 0) { |
6997 | dout(7) << "target has no link, failing..." << dendl; | |
f67539c2 | 6998 | respond_to_request(mdr, -CEPHFS_ENOENT); |
20effc67 | 6999 | return; |
9f95a23c | 7000 | } |
7c673cae FG |
7001 | |
7002 | if ((!mdr->has_more() || mdr->more()->witnessed.empty())) { | |
7003 | if (!check_access(mdr, targeti, MAY_WRITE)) | |
7004 | return; | |
7005 | ||
7006 | if (!check_access(mdr, dir->get_inode(), MAY_WRITE)) | |
7007 | return; | |
7008 | ||
7009 | if (!check_fragment_space(mdr, dir)) | |
7010 | return; | |
20effc67 TL |
7011 | |
7012 | if (!check_dir_max_entries(mdr, dir)) | |
7013 | return; | |
7c673cae FG |
7014 | } |
7015 | ||
adb31ebb TL |
7016 | CInode* target_pin = targeti->get_projected_parent_dir()->inode; |
7017 | SnapRealm *target_realm = target_pin->find_snaprealm(); | |
7018 | if (target_pin != dir->inode && | |
7019 | target_realm->get_subvolume_ino() != | |
7020 | dir->inode->find_snaprealm()->get_subvolume_ino()) { | |
7021 | dout(7) << "target is in different subvolume, failing..." << dendl; | |
f67539c2 | 7022 | respond_to_request(mdr, -CEPHFS_EXDEV); |
adb31ebb TL |
7023 | return; |
7024 | } | |
7025 | ||
7c673cae | 7026 | // go! |
11fdf7f2 | 7027 | ceph_assert(g_conf()->mds_kill_link_at != 1); |
7c673cae FG |
7028 | |
7029 | // local or remote? | |
7030 | if (targeti->is_auth()) | |
adb31ebb | 7031 | _link_local(mdr, destdn, targeti, target_realm); |
7c673cae | 7032 | else |
9f95a23c | 7033 | _link_remote(mdr, true, destdn, targeti); |
92f5a8d4 | 7034 | mds->balancer->maybe_fragment(dir, false); |
7c673cae FG |
7035 | } |
7036 | ||
7037 | ||
7038 | class C_MDS_link_local_finish : public ServerLogContext { | |
7039 | CDentry *dn; | |
7040 | CInode *targeti; | |
7041 | version_t dnpv; | |
7042 | version_t tipv; | |
11fdf7f2 | 7043 | bool adjust_realm; |
7c673cae FG |
7044 | public: |
7045 | C_MDS_link_local_finish(Server *s, MDRequestRef& r, CDentry *d, CInode *ti, | |
11fdf7f2 | 7046 | version_t dnpv_, version_t tipv_, bool ar) : |
7c673cae | 7047 | ServerLogContext(s, r), dn(d), targeti(ti), |
11fdf7f2 | 7048 | dnpv(dnpv_), tipv(tipv_), adjust_realm(ar) { } |
7c673cae | 7049 | void finish(int r) override { |
11fdf7f2 TL |
7050 | ceph_assert(r == 0); |
7051 | server->_link_local_finish(mdr, dn, targeti, dnpv, tipv, adjust_realm); | |
7c673cae FG |
7052 | } |
7053 | }; | |
7054 | ||
7055 | ||
adb31ebb | 7056 | void Server::_link_local(MDRequestRef& mdr, CDentry *dn, CInode *targeti, SnapRealm *target_realm) |
7c673cae FG |
7057 | { |
7058 | dout(10) << "_link_local " << *dn << " to " << *targeti << dendl; | |
7059 | ||
7060 | mdr->ls = mdlog->get_current_segment(); | |
7061 | ||
7062 | // predirty NEW dentry | |
7063 | version_t dnpv = dn->pre_dirty(); | |
7064 | version_t tipv = targeti->pre_dirty(); | |
7065 | ||
7066 | // project inode update | |
f67539c2 TL |
7067 | auto pi = targeti->project_inode(mdr); |
7068 | pi.inode->nlink++; | |
7069 | pi.inode->ctime = mdr->get_op_stamp(); | |
7070 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
7071 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
7072 | pi.inode->change_attr++; | |
7073 | pi.inode->version = tipv; | |
7c673cae | 7074 | |
11fdf7f2 | 7075 | bool adjust_realm = false; |
adb31ebb | 7076 | if (!target_realm->get_subvolume_ino() && !targeti->is_projected_snaprealm_global()) { |
11fdf7f2 TL |
7077 | sr_t *newsnap = targeti->project_snaprealm(); |
7078 | targeti->mark_snaprealm_global(newsnap); | |
adb31ebb | 7079 | targeti->record_snaprealm_parent_dentry(newsnap, target_realm, targeti->get_projected_parent_dn(), true); |
11fdf7f2 TL |
7080 | adjust_realm = true; |
7081 | } | |
7082 | ||
7c673cae FG |
7083 | // log + wait |
7084 | EUpdate *le = new EUpdate(mdlog, "link_local"); | |
7085 | mdlog->start_entry(le); | |
7086 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
7087 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, dn->get_dir(), PREDIRTY_DIR, 1); // new dn | |
7088 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, 0, PREDIRTY_PRIMARY); // targeti | |
7089 | le->metablob.add_remote_dentry(dn, true, targeti->ino(), targeti->d_type()); // new remote | |
7090 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, targeti); | |
7091 | ||
7092 | // do this after predirty_*, to avoid funky extra dnl arg | |
7093 | dn->push_projected_linkage(targeti->ino(), targeti->d_type()); | |
7094 | ||
11fdf7f2 TL |
7095 | journal_and_reply(mdr, targeti, dn, le, |
7096 | new C_MDS_link_local_finish(this, mdr, dn, targeti, dnpv, tipv, adjust_realm)); | |
7c673cae FG |
7097 | } |
7098 | ||
7099 | void Server::_link_local_finish(MDRequestRef& mdr, CDentry *dn, CInode *targeti, | |
11fdf7f2 | 7100 | version_t dnpv, version_t tipv, bool adjust_realm) |
7c673cae FG |
7101 | { |
7102 | dout(10) << "_link_local_finish " << *dn << " to " << *targeti << dendl; | |
7103 | ||
7104 | // link and unlock the NEW dentry | |
31f18b77 FG |
7105 | CDentry::linkage_t *dnl = dn->pop_projected_linkage(); |
7106 | if (!dnl->get_inode()) | |
7107 | dn->link_remote(dnl, targeti); | |
7c673cae FG |
7108 | dn->mark_dirty(dnpv, mdr->ls); |
7109 | ||
7110 | // target inode | |
7c673cae FG |
7111 | mdr->apply(); |
7112 | ||
7113 | MDRequestRef null_ref; | |
7114 | mdcache->send_dentry_link(dn, null_ref); | |
7115 | ||
11fdf7f2 TL |
7116 | if (adjust_realm) { |
7117 | int op = CEPH_SNAP_OP_SPLIT; | |
7118 | mds->mdcache->send_snap_update(targeti, 0, op); | |
7119 | mds->mdcache->do_realm_invalidate_and_update_notify(targeti, op); | |
7120 | } | |
7121 | ||
7c673cae | 7122 | // bump target popularity |
11fdf7f2 TL |
7123 | mds->balancer->hit_inode(targeti, META_POP_IWR); |
7124 | mds->balancer->hit_dir(dn->get_dir(), META_POP_IWR); | |
7c673cae FG |
7125 | |
7126 | // reply | |
7127 | respond_to_request(mdr, 0); | |
7128 | } | |
7129 | ||
7130 | ||
7131 | // link / unlink remote | |
7132 | ||
7133 | class C_MDS_link_remote_finish : public ServerLogContext { | |
7134 | bool inc; | |
7135 | CDentry *dn; | |
7136 | CInode *targeti; | |
7137 | version_t dpv; | |
7138 | public: | |
7139 | C_MDS_link_remote_finish(Server *s, MDRequestRef& r, bool i, CDentry *d, CInode *ti) : | |
7140 | ServerLogContext(s, r), inc(i), dn(d), targeti(ti), | |
7141 | dpv(d->get_projected_version()) {} | |
7142 | void finish(int r) override { | |
11fdf7f2 | 7143 | ceph_assert(r == 0); |
7c673cae FG |
7144 | server->_link_remote_finish(mdr, inc, dn, targeti, dpv); |
7145 | } | |
7146 | }; | |
7147 | ||
7148 | void Server::_link_remote(MDRequestRef& mdr, bool inc, CDentry *dn, CInode *targeti) | |
7149 | { | |
7150 | dout(10) << "_link_remote " | |
7151 | << (inc ? "link ":"unlink ") | |
7152 | << *dn << " to " << *targeti << dendl; | |
7153 | ||
7154 | // 1. send LinkPrepare to dest (journal nlink++ prepare) | |
7155 | mds_rank_t linkauth = targeti->authority().first; | |
7156 | if (mdr->more()->witnessed.count(linkauth) == 0) { | |
7157 | if (mds->is_cluster_degraded() && | |
7158 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(linkauth)) { | |
7159 | dout(10) << " targeti auth mds." << linkauth << " is not active" << dendl; | |
f67539c2 | 7160 | if (mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
7161 | mds->wait_for_active_peer(linkauth, new C_MDS_RetryRequest(mdcache, mdr)); |
7162 | return; | |
7163 | } | |
7164 | ||
7165 | dout(10) << " targeti auth must prepare nlink++/--" << dendl; | |
7166 | int op; | |
7167 | if (inc) | |
f67539c2 | 7168 | op = MMDSPeerRequest::OP_LINKPREP; |
7c673cae | 7169 | else |
f67539c2 TL |
7170 | op = MMDSPeerRequest::OP_UNLINKPREP; |
7171 | auto req = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, op); | |
7c673cae FG |
7172 | targeti->set_object_info(req->get_object_info()); |
7173 | req->op_stamp = mdr->get_op_stamp(); | |
11fdf7f2 TL |
7174 | if (auto& desti_srnode = mdr->more()->desti_srnode) |
7175 | encode(*desti_srnode, req->desti_snapbl); | |
7c673cae FG |
7176 | mds->send_message_mds(req, linkauth); |
7177 | ||
f67539c2 TL |
7178 | ceph_assert(mdr->more()->waiting_on_peer.count(linkauth) == 0); |
7179 | mdr->more()->waiting_on_peer.insert(linkauth); | |
7c673cae FG |
7180 | return; |
7181 | } | |
7182 | dout(10) << " targeti auth has prepared nlink++/--" << dendl; | |
7183 | ||
11fdf7f2 TL |
7184 | ceph_assert(g_conf()->mds_kill_link_at != 2); |
7185 | ||
7186 | if (auto& desti_srnode = mdr->more()->desti_srnode) { | |
7187 | delete desti_srnode; | |
7188 | desti_srnode = NULL; | |
7189 | } | |
7c673cae FG |
7190 | |
7191 | mdr->set_mds_stamp(ceph_clock_now()); | |
7192 | ||
7193 | // add to event | |
7194 | mdr->ls = mdlog->get_current_segment(); | |
7195 | EUpdate *le = new EUpdate(mdlog, inc ? "link_remote":"unlink_remote"); | |
7196 | mdlog->start_entry(le); | |
7197 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
7198 | if (!mdr->more()->witnessed.empty()) { | |
f67539c2 | 7199 | dout(20) << " noting uncommitted_peers " << mdr->more()->witnessed << dendl; |
7c673cae | 7200 | le->reqid = mdr->reqid; |
f67539c2 TL |
7201 | le->had_peers = true; |
7202 | mdcache->add_uncommitted_leader(mdr->reqid, mdr->ls, mdr->more()->witnessed); | |
7c673cae FG |
7203 | } |
7204 | ||
7205 | if (inc) { | |
7206 | dn->pre_dirty(); | |
7207 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, dn->get_dir(), PREDIRTY_DIR, 1); | |
7208 | le->metablob.add_remote_dentry(dn, true, targeti->ino(), targeti->d_type()); // new remote | |
7209 | dn->push_projected_linkage(targeti->ino(), targeti->d_type()); | |
7210 | } else { | |
7211 | dn->pre_dirty(); | |
7212 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, dn->get_dir(), PREDIRTY_DIR, -1); | |
7213 | mdcache->journal_cow_dentry(mdr.get(), &le->metablob, dn); | |
7214 | le->metablob.add_null_dentry(dn, true); | |
31f18b77 | 7215 | dn->push_projected_linkage(); |
7c673cae FG |
7216 | } |
7217 | ||
9f95a23c TL |
7218 | journal_and_reply(mdr, (inc ? targeti : nullptr), dn, le, |
7219 | new C_MDS_link_remote_finish(this, mdr, inc, dn, targeti)); | |
7c673cae FG |
7220 | } |
7221 | ||
7222 | void Server::_link_remote_finish(MDRequestRef& mdr, bool inc, | |
7223 | CDentry *dn, CInode *targeti, | |
7224 | version_t dpv) | |
7225 | { | |
7226 | dout(10) << "_link_remote_finish " | |
7227 | << (inc ? "link ":"unlink ") | |
7228 | << *dn << " to " << *targeti << dendl; | |
7229 | ||
11fdf7f2 | 7230 | ceph_assert(g_conf()->mds_kill_link_at != 3); |
7c673cae FG |
7231 | |
7232 | if (!mdr->more()->witnessed.empty()) | |
f67539c2 | 7233 | mdcache->logged_leader_update(mdr->reqid); |
7c673cae FG |
7234 | |
7235 | if (inc) { | |
7236 | // link the new dentry | |
31f18b77 FG |
7237 | CDentry::linkage_t *dnl = dn->pop_projected_linkage(); |
7238 | if (!dnl->get_inode()) | |
7239 | dn->link_remote(dnl, targeti); | |
7c673cae FG |
7240 | dn->mark_dirty(dpv, mdr->ls); |
7241 | } else { | |
7242 | // unlink main dentry | |
7243 | dn->get_dir()->unlink_inode(dn); | |
31f18b77 | 7244 | dn->pop_projected_linkage(); |
7c673cae FG |
7245 | dn->mark_dirty(dn->get_projected_version(), mdr->ls); // dirty old dentry |
7246 | } | |
7247 | ||
7248 | mdr->apply(); | |
7249 | ||
7250 | MDRequestRef null_ref; | |
7251 | if (inc) | |
7252 | mdcache->send_dentry_link(dn, null_ref); | |
7253 | else | |
7254 | mdcache->send_dentry_unlink(dn, NULL, null_ref); | |
7255 | ||
7256 | // bump target popularity | |
11fdf7f2 TL |
7257 | mds->balancer->hit_inode(targeti, META_POP_IWR); |
7258 | mds->balancer->hit_dir(dn->get_dir(), META_POP_IWR); | |
7c673cae FG |
7259 | |
7260 | // reply | |
7261 | respond_to_request(mdr, 0); | |
7262 | ||
7263 | if (!inc) | |
7264 | // removing a new dn? | |
7265 | dn->get_dir()->try_remove_unlinked_dn(dn); | |
7266 | } | |
7267 | ||
7268 | ||
7269 | // remote linking/unlinking | |
7270 | ||
f67539c2 | 7271 | class C_MDS_PeerLinkPrep : public ServerLogContext { |
7c673cae | 7272 | CInode *targeti; |
11fdf7f2 | 7273 | bool adjust_realm; |
7c673cae | 7274 | public: |
f67539c2 | 7275 | C_MDS_PeerLinkPrep(Server *s, MDRequestRef& r, CInode *t, bool ar) : |
11fdf7f2 | 7276 | ServerLogContext(s, r), targeti(t), adjust_realm(ar) { } |
7c673cae | 7277 | void finish(int r) override { |
11fdf7f2 | 7278 | ceph_assert(r == 0); |
f67539c2 | 7279 | server->_logged_peer_link(mdr, targeti, adjust_realm); |
7c673cae FG |
7280 | } |
7281 | }; | |
7282 | ||
f67539c2 | 7283 | class C_MDS_PeerLinkCommit : public ServerContext { |
7c673cae FG |
7284 | MDRequestRef mdr; |
7285 | CInode *targeti; | |
7286 | public: | |
f67539c2 | 7287 | C_MDS_PeerLinkCommit(Server *s, MDRequestRef& r, CInode *t) : |
7c673cae FG |
7288 | ServerContext(s), mdr(r), targeti(t) { } |
7289 | void finish(int r) override { | |
f67539c2 | 7290 | server->_commit_peer_link(mdr, r, targeti); |
7c673cae FG |
7291 | } |
7292 | }; | |
7293 | ||
f67539c2 | 7294 | void Server::handle_peer_link_prep(MDRequestRef& mdr) |
7c673cae | 7295 | { |
f67539c2 TL |
7296 | dout(10) << "handle_peer_link_prep " << *mdr |
7297 | << " on " << mdr->peer_request->get_object_info() | |
7c673cae FG |
7298 | << dendl; |
7299 | ||
11fdf7f2 | 7300 | ceph_assert(g_conf()->mds_kill_link_at != 4); |
7c673cae | 7301 | |
f67539c2 | 7302 | CInode *targeti = mdcache->get_inode(mdr->peer_request->get_object_info().ino); |
11fdf7f2 | 7303 | ceph_assert(targeti); |
7c673cae FG |
7304 | dout(10) << "targeti " << *targeti << dendl; |
7305 | CDentry *dn = targeti->get_parent_dn(); | |
7306 | CDentry::linkage_t *dnl = dn->get_linkage(); | |
11fdf7f2 | 7307 | ceph_assert(dnl->is_primary()); |
7c673cae | 7308 | |
f67539c2 | 7309 | mdr->set_op_stamp(mdr->peer_request->op_stamp); |
7c673cae FG |
7310 | |
7311 | mdr->auth_pin(targeti); | |
7312 | ||
f67539c2 | 7313 | //ceph_abort(); // test hack: make sure leader can handle a peer that fails to prepare... |
11fdf7f2 | 7314 | ceph_assert(g_conf()->mds_kill_link_at != 5); |
7c673cae FG |
7315 | |
7316 | // journal it | |
7317 | mdr->ls = mdlog->get_current_segment(); | |
f67539c2 TL |
7318 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_link_prep", mdr->reqid, mdr->peer_to_mds, |
7319 | EPeerUpdate::OP_PREPARE, EPeerUpdate::LINK); | |
7c673cae FG |
7320 | mdlog->start_entry(le); |
7321 | ||
f67539c2 | 7322 | auto pi = dnl->get_inode()->project_inode(mdr); |
7c673cae FG |
7323 | |
7324 | // update journaled target inode | |
7325 | bool inc; | |
11fdf7f2 TL |
7326 | bool adjust_realm = false; |
7327 | bool realm_projected = false; | |
f67539c2 | 7328 | if (mdr->peer_request->get_op() == MMDSPeerRequest::OP_LINKPREP) { |
7c673cae | 7329 | inc = true; |
f67539c2 | 7330 | pi.inode->nlink++; |
adb31ebb TL |
7331 | |
7332 | CDentry *target_pdn = targeti->get_projected_parent_dn(); | |
7333 | SnapRealm *target_realm = target_pdn->get_dir()->inode->find_snaprealm(); | |
7334 | if (!target_realm->get_subvolume_ino() && !targeti->is_projected_snaprealm_global()) { | |
11fdf7f2 TL |
7335 | sr_t *newsnap = targeti->project_snaprealm(); |
7336 | targeti->mark_snaprealm_global(newsnap); | |
adb31ebb | 7337 | targeti->record_snaprealm_parent_dentry(newsnap, target_realm, target_pdn, true); |
11fdf7f2 TL |
7338 | adjust_realm = true; |
7339 | realm_projected = true; | |
7340 | } | |
7c673cae FG |
7341 | } else { |
7342 | inc = false; | |
f67539c2 | 7343 | pi.inode->nlink--; |
11fdf7f2 | 7344 | if (targeti->is_projected_snaprealm_global()) { |
f67539c2 TL |
7345 | ceph_assert(mdr->peer_request->desti_snapbl.length()); |
7346 | auto p = mdr->peer_request->desti_snapbl.cbegin(); | |
11fdf7f2 TL |
7347 | |
7348 | sr_t *newsnap = targeti->project_snaprealm(); | |
7349 | decode(*newsnap, p); | |
7350 | ||
f67539c2 | 7351 | if (pi.inode->nlink == 0) |
11fdf7f2 TL |
7352 | ceph_assert(!newsnap->is_parent_global()); |
7353 | ||
7354 | realm_projected = true; | |
7355 | } else { | |
f67539c2 | 7356 | ceph_assert(mdr->peer_request->desti_snapbl.length() == 0); |
11fdf7f2 | 7357 | } |
7c673cae FG |
7358 | } |
7359 | ||
7360 | link_rollback rollback; | |
7361 | rollback.reqid = mdr->reqid; | |
7362 | rollback.ino = targeti->ino(); | |
f67539c2 TL |
7363 | rollback.old_ctime = targeti->get_inode()->ctime; // we hold versionlock xlock; no concorrent projections |
7364 | const auto& pf = targeti->get_parent_dn()->get_dir()->get_projected_fnode(); | |
7c673cae FG |
7365 | rollback.old_dir_mtime = pf->fragstat.mtime; |
7366 | rollback.old_dir_rctime = pf->rstat.rctime; | |
7367 | rollback.was_inc = inc; | |
11fdf7f2 TL |
7368 | if (realm_projected) { |
7369 | if (targeti->snaprealm) { | |
7370 | encode(true, rollback.snapbl); | |
7371 | targeti->encode_snap_blob(rollback.snapbl); | |
7372 | } else { | |
7373 | encode(false, rollback.snapbl); | |
7374 | } | |
7375 | } | |
7376 | encode(rollback, le->rollback); | |
7c673cae FG |
7377 | mdr->more()->rollback_bl = le->rollback; |
7378 | ||
f67539c2 TL |
7379 | pi.inode->ctime = mdr->get_op_stamp(); |
7380 | pi.inode->version = targeti->pre_dirty(); | |
7c673cae | 7381 | |
f67539c2 | 7382 | dout(10) << " projected inode " << pi.inode->ino << " v " << pi.inode->version << dendl; |
7c673cae FG |
7383 | |
7384 | // commit case | |
7385 | mdcache->predirty_journal_parents(mdr, &le->commit, dnl->get_inode(), 0, PREDIRTY_SHALLOW|PREDIRTY_PRIMARY); | |
7386 | mdcache->journal_dirty_inode(mdr.get(), &le->commit, targeti); | |
f67539c2 | 7387 | mdcache->add_uncommitted_peer(mdr->reqid, mdr->ls, mdr->peer_to_mds); |
7c673cae FG |
7388 | |
7389 | // set up commit waiter | |
f67539c2 | 7390 | mdr->more()->peer_commit = new C_MDS_PeerLinkCommit(this, mdr, targeti); |
7c673cae | 7391 | |
f67539c2 TL |
7392 | mdr->more()->peer_update_journaled = true; |
7393 | submit_mdlog_entry(le, new C_MDS_PeerLinkPrep(this, mdr, targeti, adjust_realm), | |
7c673cae FG |
7394 | mdr, __func__); |
7395 | mdlog->flush(); | |
7396 | } | |
7397 | ||
f67539c2 | 7398 | void Server::_logged_peer_link(MDRequestRef& mdr, CInode *targeti, bool adjust_realm) |
7c673cae | 7399 | { |
f67539c2 | 7400 | dout(10) << "_logged_peer_link " << *mdr |
7c673cae FG |
7401 | << " " << *targeti << dendl; |
7402 | ||
11fdf7f2 | 7403 | ceph_assert(g_conf()->mds_kill_link_at != 6); |
7c673cae FG |
7404 | |
7405 | // update the target | |
7c673cae FG |
7406 | mdr->apply(); |
7407 | ||
7408 | // hit pop | |
11fdf7f2 | 7409 | mds->balancer->hit_inode(targeti, META_POP_IWR); |
7c673cae FG |
7410 | |
7411 | // done. | |
f67539c2 | 7412 | mdr->reset_peer_request(); |
7c673cae | 7413 | |
11fdf7f2 TL |
7414 | if (adjust_realm) { |
7415 | int op = CEPH_SNAP_OP_SPLIT; | |
7416 | mds->mdcache->send_snap_update(targeti, 0, op); | |
7417 | mds->mdcache->do_realm_invalidate_and_update_notify(targeti, op); | |
7418 | } | |
7419 | ||
7c673cae FG |
7420 | // ack |
7421 | if (!mdr->aborted) { | |
f67539c2 TL |
7422 | auto reply = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_LINKPREPACK); |
7423 | mds->send_message_mds(reply, mdr->peer_to_mds); | |
7c673cae FG |
7424 | } else { |
7425 | dout(10) << " abort flag set, finishing" << dendl; | |
7426 | mdcache->request_finish(mdr); | |
7427 | } | |
7428 | } | |
7429 | ||
7430 | ||
f67539c2 TL |
7431 | struct C_MDS_CommittedPeer : public ServerLogContext { |
7432 | C_MDS_CommittedPeer(Server *s, MDRequestRef& m) : ServerLogContext(s, m) {} | |
7c673cae | 7433 | void finish(int r) override { |
f67539c2 | 7434 | server->_committed_peer(mdr); |
7c673cae FG |
7435 | } |
7436 | }; | |
7437 | ||
f67539c2 | 7438 | void Server::_commit_peer_link(MDRequestRef& mdr, int r, CInode *targeti) |
7c673cae | 7439 | { |
f67539c2 | 7440 | dout(10) << "_commit_peer_link " << *mdr |
7c673cae FG |
7441 | << " r=" << r |
7442 | << " " << *targeti << dendl; | |
7443 | ||
11fdf7f2 | 7444 | ceph_assert(g_conf()->mds_kill_link_at != 7); |
7c673cae FG |
7445 | |
7446 | if (r == 0) { | |
7447 | // drop our pins, etc. | |
7448 | mdr->cleanup(); | |
7449 | ||
7450 | // write a commit to the journal | |
f67539c2 TL |
7451 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_link_commit", mdr->reqid, mdr->peer_to_mds, |
7452 | EPeerUpdate::OP_COMMIT, EPeerUpdate::LINK); | |
7c673cae | 7453 | mdlog->start_entry(le); |
f67539c2 | 7454 | submit_mdlog_entry(le, new C_MDS_CommittedPeer(this, mdr), mdr, __func__); |
7c673cae FG |
7455 | mdlog->flush(); |
7456 | } else { | |
f67539c2 | 7457 | do_link_rollback(mdr->more()->rollback_bl, mdr->peer_to_mds, mdr); |
7c673cae FG |
7458 | } |
7459 | } | |
7460 | ||
f67539c2 | 7461 | void Server::_committed_peer(MDRequestRef& mdr) |
7c673cae | 7462 | { |
f67539c2 | 7463 | dout(10) << "_committed_peer " << *mdr << dendl; |
7c673cae | 7464 | |
11fdf7f2 | 7465 | ceph_assert(g_conf()->mds_kill_link_at != 8); |
7c673cae | 7466 | |
f67539c2 TL |
7467 | bool assert_exist = mdr->more()->peer_update_journaled; |
7468 | mdcache->finish_uncommitted_peer(mdr->reqid, assert_exist); | |
7469 | auto req = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_COMMITTED); | |
7470 | mds->send_message_mds(req, mdr->peer_to_mds); | |
7c673cae FG |
7471 | mdcache->request_finish(mdr); |
7472 | } | |
7473 | ||
7474 | struct C_MDS_LoggedLinkRollback : public ServerLogContext { | |
7475 | MutationRef mut; | |
9f95a23c | 7476 | map<client_t,ref_t<MClientSnap>> splits; |
11fdf7f2 | 7477 | C_MDS_LoggedLinkRollback(Server *s, MutationRef& m, MDRequestRef& r, |
9f95a23c | 7478 | map<client_t,ref_t<MClientSnap>>&& _splits) : |
11fdf7f2 TL |
7479 | ServerLogContext(s, r), mut(m), splits(std::move(_splits)) { |
7480 | } | |
7c673cae | 7481 | void finish(int r) override { |
11fdf7f2 | 7482 | server->_link_rollback_finish(mut, mdr, splits); |
7c673cae FG |
7483 | } |
7484 | }; | |
7485 | ||
f67539c2 | 7486 | void Server::do_link_rollback(bufferlist &rbl, mds_rank_t leader, MDRequestRef& mdr) |
7c673cae FG |
7487 | { |
7488 | link_rollback rollback; | |
11fdf7f2 TL |
7489 | auto p = rbl.cbegin(); |
7490 | decode(rollback, p); | |
7c673cae FG |
7491 | |
7492 | dout(10) << "do_link_rollback on " << rollback.reqid | |
7493 | << (rollback.was_inc ? " inc":" dec") | |
7494 | << " ino " << rollback.ino | |
7495 | << dendl; | |
7496 | ||
11fdf7f2 | 7497 | ceph_assert(g_conf()->mds_kill_link_at != 9); |
7c673cae | 7498 | |
f67539c2 | 7499 | mdcache->add_rollback(rollback.reqid, leader); // need to finish this update before resolve finishes |
11fdf7f2 | 7500 | ceph_assert(mdr || mds->is_resolve()); |
7c673cae FG |
7501 | |
7502 | MutationRef mut(new MutationImpl(nullptr, utime_t(), rollback.reqid)); | |
7503 | mut->ls = mds->mdlog->get_current_segment(); | |
7504 | ||
7505 | CInode *in = mdcache->get_inode(rollback.ino); | |
11fdf7f2 | 7506 | ceph_assert(in); |
7c673cae | 7507 | dout(10) << " target is " << *in << dendl; |
f67539c2 | 7508 | ceph_assert(!in->is_projected()); // live peer request hold versionlock xlock. |
7c673cae | 7509 | |
f67539c2 TL |
7510 | auto pi = in->project_inode(mut); |
7511 | pi.inode->version = in->pre_dirty(); | |
7c673cae FG |
7512 | |
7513 | // parent dir rctime | |
7514 | CDir *parent = in->get_projected_parent_dn()->get_dir(); | |
f67539c2 | 7515 | auto pf = parent->project_fnode(mut); |
7c673cae | 7516 | pf->version = parent->pre_dirty(); |
f67539c2 | 7517 | if (pf->fragstat.mtime == pi.inode->ctime) { |
7c673cae | 7518 | pf->fragstat.mtime = rollback.old_dir_mtime; |
f67539c2 | 7519 | if (pf->rstat.rctime == pi.inode->ctime) |
7c673cae FG |
7520 | pf->rstat.rctime = rollback.old_dir_rctime; |
7521 | mut->add_updated_lock(&parent->get_inode()->filelock); | |
7522 | mut->add_updated_lock(&parent->get_inode()->nestlock); | |
7523 | } | |
7524 | ||
7525 | // inode | |
f67539c2 | 7526 | pi.inode->ctime = rollback.old_ctime; |
7c673cae | 7527 | if (rollback.was_inc) |
f67539c2 | 7528 | pi.inode->nlink--; |
7c673cae | 7529 | else |
f67539c2 | 7530 | pi.inode->nlink++; |
7c673cae | 7531 | |
9f95a23c | 7532 | map<client_t,ref_t<MClientSnap>> splits; |
11fdf7f2 TL |
7533 | if (rollback.snapbl.length() && in->snaprealm) { |
7534 | bool hadrealm; | |
7535 | auto p = rollback.snapbl.cbegin(); | |
7536 | decode(hadrealm, p); | |
7537 | if (hadrealm) { | |
7538 | if (!mds->is_resolve()) { | |
7539 | sr_t *new_srnode = new sr_t(); | |
7540 | decode(*new_srnode, p); | |
7541 | in->project_snaprealm(new_srnode); | |
7542 | } else { | |
7543 | decode(in->snaprealm->srnode, p); | |
7544 | } | |
7545 | } else { | |
7546 | SnapRealm *realm = parent->get_inode()->find_snaprealm(); | |
7547 | if (!mds->is_resolve()) | |
7548 | mdcache->prepare_realm_merge(in->snaprealm, realm, splits); | |
7549 | in->project_snaprealm(NULL); | |
7550 | } | |
7551 | } | |
7552 | ||
7c673cae | 7553 | // journal it |
f67539c2 TL |
7554 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_link_rollback", rollback.reqid, leader, |
7555 | EPeerUpdate::OP_ROLLBACK, EPeerUpdate::LINK); | |
7c673cae FG |
7556 | mdlog->start_entry(le); |
7557 | le->commit.add_dir_context(parent); | |
7558 | le->commit.add_dir(parent, true); | |
7559 | le->commit.add_primary_dentry(in->get_projected_parent_dn(), 0, true); | |
7560 | ||
11fdf7f2 | 7561 | submit_mdlog_entry(le, new C_MDS_LoggedLinkRollback(this, mut, mdr, std::move(splits)), |
7c673cae FG |
7562 | mdr, __func__); |
7563 | mdlog->flush(); | |
7564 | } | |
7565 | ||
11fdf7f2 | 7566 | void Server::_link_rollback_finish(MutationRef& mut, MDRequestRef& mdr, |
9f95a23c | 7567 | map<client_t,ref_t<MClientSnap>>& splits) |
7c673cae FG |
7568 | { |
7569 | dout(10) << "_link_rollback_finish" << dendl; | |
7570 | ||
11fdf7f2 | 7571 | ceph_assert(g_conf()->mds_kill_link_at != 10); |
7c673cae FG |
7572 | |
7573 | mut->apply(); | |
11fdf7f2 TL |
7574 | |
7575 | if (!mds->is_resolve()) | |
7576 | mdcache->send_snaps(splits); | |
7577 | ||
7c673cae FG |
7578 | if (mdr) |
7579 | mdcache->request_finish(mdr); | |
7580 | ||
e306af50 | 7581 | mdcache->finish_rollback(mut->reqid, mdr); |
7c673cae FG |
7582 | |
7583 | mut->cleanup(); | |
7584 | } | |
7585 | ||
7586 | ||
f67539c2 | 7587 | void Server::handle_peer_link_prep_ack(MDRequestRef& mdr, const cref_t<MMDSPeerRequest> &m) |
7c673cae | 7588 | { |
f67539c2 | 7589 | dout(10) << "handle_peer_link_prep_ack " << *mdr |
7c673cae FG |
7590 | << " " << *m << dendl; |
7591 | mds_rank_t from = mds_rank_t(m->get_source().num()); | |
7592 | ||
11fdf7f2 | 7593 | ceph_assert(g_conf()->mds_kill_link_at != 11); |
7c673cae | 7594 | |
f67539c2 TL |
7595 | // note peer |
7596 | mdr->more()->peers.insert(from); | |
7c673cae FG |
7597 | |
7598 | // witnessed! | |
11fdf7f2 | 7599 | ceph_assert(mdr->more()->witnessed.count(from) == 0); |
7c673cae | 7600 | mdr->more()->witnessed.insert(from); |
11fdf7f2 | 7601 | ceph_assert(!m->is_not_journaled()); |
f67539c2 | 7602 | mdr->more()->has_journaled_peers = true; |
7c673cae FG |
7603 | |
7604 | // remove from waiting list | |
f67539c2 TL |
7605 | ceph_assert(mdr->more()->waiting_on_peer.count(from)); |
7606 | mdr->more()->waiting_on_peer.erase(from); | |
7c673cae | 7607 | |
f67539c2 | 7608 | ceph_assert(mdr->more()->waiting_on_peer.empty()); |
7c673cae | 7609 | |
9f95a23c TL |
7610 | dispatch_client_request(mdr); // go again! |
7611 | } | |
7c673cae | 7612 | |
9f95a23c TL |
7613 | |
7614 | ||
7615 | ||
7616 | ||
7617 | // UNLINK | |
7618 | ||
7619 | void Server::handle_client_unlink(MDRequestRef& mdr) | |
7620 | { | |
7621 | const cref_t<MClientRequest> &req = mdr->client_request; | |
7622 | client_t client = mdr->get_client(); | |
7623 | ||
7624 | // rmdir or unlink? | |
7625 | bool rmdir = (req->get_op() == CEPH_MDS_OP_RMDIR); | |
7626 | ||
7627 | if (rmdir) | |
7628 | mdr->disable_lock_cache(); | |
7629 | CDentry *dn = rdlock_path_xlock_dentry(mdr, false, true); | |
7630 | if (!dn) | |
7631 | return; | |
7c673cae FG |
7632 | |
7633 | CDentry::linkage_t *dnl = dn->get_linkage(client, mdr); | |
11fdf7f2 | 7634 | ceph_assert(!dnl->is_null()); |
9f95a23c | 7635 | CInode *in = dnl->get_inode(); |
7c673cae FG |
7636 | |
7637 | if (rmdir) { | |
7638 | dout(7) << "handle_client_rmdir on " << *dn << dendl; | |
7639 | } else { | |
7640 | dout(7) << "handle_client_unlink on " << *dn << dendl; | |
7641 | } | |
7642 | dout(7) << "dn links to " << *in << dendl; | |
7643 | ||
7644 | // rmdir vs is_dir | |
7645 | if (in->is_dir()) { | |
7646 | if (rmdir) { | |
7647 | // do empty directory checks | |
7648 | if (_dir_is_nonempty_unlocked(mdr, in)) { | |
f67539c2 | 7649 | respond_to_request(mdr, -CEPHFS_ENOTEMPTY); |
7c673cae FG |
7650 | return; |
7651 | } | |
7652 | } else { | |
7653 | dout(7) << "handle_client_unlink on dir " << *in << ", returning error" << dendl; | |
f67539c2 | 7654 | respond_to_request(mdr, -CEPHFS_EISDIR); |
7c673cae FG |
7655 | return; |
7656 | } | |
7657 | } else { | |
7658 | if (rmdir) { | |
7659 | // unlink | |
7660 | dout(7) << "handle_client_rmdir on non-dir " << *in << ", returning error" << dendl; | |
f67539c2 | 7661 | respond_to_request(mdr, -CEPHFS_ENOTDIR); |
7c673cae FG |
7662 | return; |
7663 | } | |
7664 | } | |
7665 | ||
9f95a23c TL |
7666 | CInode *diri = dn->get_dir()->get_inode(); |
7667 | if ((!mdr->has_more() || mdr->more()->witnessed.empty())) { | |
7668 | if (!check_access(mdr, diri, MAY_WRITE)) | |
7669 | return; | |
7670 | } | |
7671 | ||
7c673cae FG |
7672 | // -- create stray dentry? -- |
7673 | CDentry *straydn = NULL; | |
7674 | if (dnl->is_primary()) { | |
7675 | straydn = prepare_stray_dentry(mdr, dnl->get_inode()); | |
7676 | if (!straydn) | |
7677 | return; | |
7678 | dout(10) << " straydn is " << *straydn << dendl; | |
7679 | } else if (mdr->straydn) { | |
7680 | mdr->unpin(mdr->straydn); | |
7681 | mdr->straydn = NULL; | |
7682 | } | |
7683 | ||
7684 | // lock | |
9f95a23c TL |
7685 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
7686 | MutationImpl::LockOpVec lov; | |
11fdf7f2 | 7687 | |
9f95a23c TL |
7688 | lov.add_xlock(&in->linklock); |
7689 | lov.add_xlock(&in->snaplock); | |
7690 | if (in->is_dir()) | |
7691 | lov.add_rdlock(&in->filelock); // to verify it's empty | |
7692 | ||
7693 | if (straydn) { | |
7694 | lov.add_wrlock(&straydn->get_dir()->inode->filelock); | |
7695 | lov.add_wrlock(&straydn->get_dir()->inode->nestlock); | |
7696 | lov.add_xlock(&straydn->lock); | |
7697 | } | |
11fdf7f2 | 7698 | |
9f95a23c TL |
7699 | if (!mds->locker->acquire_locks(mdr, lov)) |
7700 | return; | |
7c673cae | 7701 | |
9f95a23c TL |
7702 | mdr->locking_state |= MutationImpl::ALL_LOCKED; |
7703 | } | |
7c673cae FG |
7704 | |
7705 | if (in->is_dir() && | |
7706 | _dir_is_nonempty(mdr, in)) { | |
f67539c2 | 7707 | respond_to_request(mdr, -CEPHFS_ENOTEMPTY); |
7c673cae FG |
7708 | return; |
7709 | } | |
7710 | ||
11fdf7f2 TL |
7711 | if (straydn) |
7712 | straydn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7713 | ||
7714 | if (!mdr->more()->desti_srnode) { | |
7715 | if (in->is_projected_snaprealm_global()) { | |
7716 | sr_t *new_srnode = in->prepare_new_srnode(0); | |
adb31ebb | 7717 | in->record_snaprealm_parent_dentry(new_srnode, nullptr, dn, dnl->is_primary()); |
11fdf7f2 TL |
7718 | // dropping the last linkage or dropping the last remote linkage, |
7719 | // detch the inode from global snaprealm | |
7720 | auto nlink = in->get_projected_inode()->nlink; | |
7721 | if (nlink == 1 || | |
7722 | (nlink == 2 && !dnl->is_primary() && | |
7723 | !in->get_projected_parent_dir()->inode->is_stray())) | |
7724 | in->clear_snaprealm_global(new_srnode); | |
7725 | mdr->more()->desti_srnode = new_srnode; | |
7726 | } else if (dnl->is_primary()) { | |
f67539c2 | 7727 | // prepare snaprealm blob for peer request |
11fdf7f2 TL |
7728 | SnapRealm *realm = in->find_snaprealm(); |
7729 | snapid_t follows = realm->get_newest_seq(); | |
7730 | if (in->snaprealm || follows + 1 > in->get_oldest_snap()) { | |
7731 | sr_t *new_srnode = in->prepare_new_srnode(follows); | |
7732 | in->record_snaprealm_past_parent(new_srnode, straydn->get_dir()->inode->find_snaprealm()); | |
7733 | mdr->more()->desti_srnode = new_srnode; | |
7734 | } | |
7735 | } | |
7736 | } | |
7737 | ||
7c673cae FG |
7738 | // yay! |
7739 | if (in->is_dir() && in->has_subtree_root_dirfrag()) { | |
7740 | // subtree root auths need to be witnesses | |
7741 | set<mds_rank_t> witnesses; | |
7742 | in->list_replicas(witnesses); | |
7743 | dout(10) << " witnesses " << witnesses << ", have " << mdr->more()->witnessed << dendl; | |
7744 | ||
7745 | for (set<mds_rank_t>::iterator p = witnesses.begin(); | |
7746 | p != witnesses.end(); | |
7747 | ++p) { | |
7748 | if (mdr->more()->witnessed.count(*p)) { | |
7749 | dout(10) << " already witnessed by mds." << *p << dendl; | |
f67539c2 | 7750 | } else if (mdr->more()->waiting_on_peer.count(*p)) { |
7c673cae FG |
7751 | dout(10) << " already waiting on witness mds." << *p << dendl; |
7752 | } else { | |
9f95a23c | 7753 | if (!_rmdir_prepare_witness(mdr, *p, mdr->dn[0], straydn)) |
7c673cae FG |
7754 | return; |
7755 | } | |
7756 | } | |
f67539c2 | 7757 | if (!mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
7758 | return; // we're waiting for a witness. |
7759 | } | |
7760 | ||
9f95a23c TL |
7761 | if (!rmdir && dnl->is_primary() && mdr->dn[0].size() == 1) |
7762 | mds->locker->create_lock_cache(mdr, diri); | |
7763 | ||
7c673cae FG |
7764 | // ok! |
7765 | if (dnl->is_remote() && !dnl->get_inode()->is_auth()) | |
7766 | _link_remote(mdr, false, dn, dnl->get_inode()); | |
7767 | else | |
7768 | _unlink_local(mdr, dn, straydn); | |
7769 | } | |
7770 | ||
7771 | class C_MDS_unlink_local_finish : public ServerLogContext { | |
7772 | CDentry *dn; | |
7773 | CDentry *straydn; | |
7774 | version_t dnpv; // deleted dentry | |
7775 | public: | |
7776 | C_MDS_unlink_local_finish(Server *s, MDRequestRef& r, CDentry *d, CDentry *sd) : | |
7777 | ServerLogContext(s, r), dn(d), straydn(sd), | |
7778 | dnpv(d->get_projected_version()) {} | |
7779 | void finish(int r) override { | |
11fdf7f2 | 7780 | ceph_assert(r == 0); |
7c673cae FG |
7781 | server->_unlink_local_finish(mdr, dn, straydn, dnpv); |
7782 | } | |
7783 | }; | |
7784 | ||
7785 | void Server::_unlink_local(MDRequestRef& mdr, CDentry *dn, CDentry *straydn) | |
7786 | { | |
7787 | dout(10) << "_unlink_local " << *dn << dendl; | |
7788 | ||
7789 | CDentry::linkage_t *dnl = dn->get_projected_linkage(); | |
7790 | CInode *in = dnl->get_inode(); | |
7791 | ||
7c673cae FG |
7792 | |
7793 | // ok, let's do it. | |
7794 | mdr->ls = mdlog->get_current_segment(); | |
7795 | ||
7796 | // prepare log entry | |
7797 | EUpdate *le = new EUpdate(mdlog, "unlink_local"); | |
7798 | mdlog->start_entry(le); | |
7799 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
7800 | if (!mdr->more()->witnessed.empty()) { | |
f67539c2 | 7801 | dout(20) << " noting uncommitted_peers " << mdr->more()->witnessed << dendl; |
7c673cae | 7802 | le->reqid = mdr->reqid; |
f67539c2 TL |
7803 | le->had_peers = true; |
7804 | mdcache->add_uncommitted_leader(mdr->reqid, mdr->ls, mdr->more()->witnessed); | |
7c673cae FG |
7805 | } |
7806 | ||
7807 | if (straydn) { | |
11fdf7f2 | 7808 | ceph_assert(dnl->is_primary()); |
7c673cae | 7809 | straydn->push_projected_linkage(in); |
7c673cae FG |
7810 | } |
7811 | ||
7812 | // the unlinked dentry | |
7813 | dn->pre_dirty(); | |
7814 | ||
f67539c2 | 7815 | auto pi = in->project_inode(mdr); |
94b18763 FG |
7816 | { |
7817 | std::string t; | |
7818 | dn->make_path_string(t, true); | |
f67539c2 TL |
7819 | pi.inode->stray_prior_path = std::move(t); |
7820 | } | |
7821 | pi.inode->version = in->pre_dirty(); | |
7822 | pi.inode->ctime = mdr->get_op_stamp(); | |
7823 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
7824 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
7825 | pi.inode->change_attr++; | |
7826 | pi.inode->nlink--; | |
7827 | if (pi.inode->nlink == 0) | |
7c673cae FG |
7828 | in->state_set(CInode::STATE_ORPHAN); |
7829 | ||
11fdf7f2 TL |
7830 | if (mdr->more()->desti_srnode) { |
7831 | auto& desti_srnode = mdr->more()->desti_srnode; | |
7832 | in->project_snaprealm(desti_srnode); | |
7833 | desti_srnode = NULL; | |
7834 | } | |
7835 | ||
7836 | if (straydn) { | |
7837 | // will manually pop projected inode | |
7838 | ||
7c673cae | 7839 | // primary link. add stray dentry. |
7c673cae FG |
7840 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, -1); |
7841 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, straydn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
7842 | ||
f67539c2 | 7843 | pi.inode->update_backtrace(); |
7c673cae FG |
7844 | le->metablob.add_primary_dentry(straydn, in, true, true); |
7845 | } else { | |
7846 | // remote link. update remote inode. | |
7847 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, dn->get_dir(), PREDIRTY_DIR, -1); | |
7848 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, 0, PREDIRTY_PRIMARY); | |
7849 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, in); | |
7850 | } | |
7851 | ||
7852 | mdcache->journal_cow_dentry(mdr.get(), &le->metablob, dn); | |
7853 | le->metablob.add_null_dentry(dn, true); | |
7854 | ||
7855 | if (in->is_dir()) { | |
7856 | dout(10) << " noting renamed (unlinked) dir ino " << in->ino() << " in metablob" << dendl; | |
7857 | le->metablob.renamed_dirino = in->ino(); | |
7858 | } | |
7859 | ||
7860 | dn->push_projected_linkage(); | |
7861 | ||
11fdf7f2 TL |
7862 | if (straydn) { |
7863 | ceph_assert(in->first <= straydn->first); | |
7864 | in->first = straydn->first; | |
7865 | } | |
7866 | ||
7c673cae | 7867 | if (in->is_dir()) { |
11fdf7f2 | 7868 | ceph_assert(straydn); |
7c673cae FG |
7869 | mdcache->project_subtree_rename(in, dn->get_dir(), straydn->get_dir()); |
7870 | } | |
7871 | ||
7872 | journal_and_reply(mdr, 0, dn, le, new C_MDS_unlink_local_finish(this, mdr, dn, straydn)); | |
7873 | } | |
7874 | ||
7875 | void Server::_unlink_local_finish(MDRequestRef& mdr, | |
7876 | CDentry *dn, CDentry *straydn, | |
7877 | version_t dnpv) | |
7878 | { | |
7879 | dout(10) << "_unlink_local_finish " << *dn << dendl; | |
7880 | ||
7881 | if (!mdr->more()->witnessed.empty()) | |
f67539c2 | 7882 | mdcache->logged_leader_update(mdr->reqid); |
7c673cae | 7883 | |
11fdf7f2 TL |
7884 | CInode *strayin = NULL; |
7885 | bool hadrealm = false; | |
7886 | if (straydn) { | |
7887 | // if there is newly created snaprealm, need to split old snaprealm's | |
7888 | // inodes_with_caps. So pop snaprealm before linkage changes. | |
7889 | strayin = dn->get_linkage()->get_inode(); | |
7890 | hadrealm = strayin->snaprealm ? true : false; | |
7891 | strayin->early_pop_projected_snaprealm(); | |
7892 | } | |
7893 | ||
7c673cae FG |
7894 | // unlink main dentry |
7895 | dn->get_dir()->unlink_inode(dn); | |
7896 | dn->pop_projected_linkage(); | |
f67539c2 | 7897 | dn->mark_dirty(dnpv, mdr->ls); |
7c673cae FG |
7898 | |
7899 | // relink as stray? (i.e. was primary link?) | |
7c673cae FG |
7900 | if (straydn) { |
7901 | dout(20) << " straydn is " << *straydn << dendl; | |
11fdf7f2 | 7902 | straydn->pop_projected_linkage(); |
7c673cae FG |
7903 | mdcache->touch_dentry_bottom(straydn); |
7904 | } | |
7905 | ||
7c673cae | 7906 | mdr->apply(); |
7c673cae FG |
7907 | |
7908 | mdcache->send_dentry_unlink(dn, straydn, mdr); | |
7909 | ||
11fdf7f2 TL |
7910 | if (straydn) { |
7911 | // update subtree map? | |
7912 | if (strayin->is_dir()) | |
7913 | mdcache->adjust_subtree_after_rename(strayin, dn->get_dir(), true); | |
7914 | ||
7915 | if (strayin->snaprealm && !hadrealm) | |
7916 | mdcache->do_realm_invalidate_and_update_notify(strayin, CEPH_SNAP_OP_SPLIT, false); | |
7917 | } | |
7c673cae FG |
7918 | |
7919 | // bump pop | |
11fdf7f2 | 7920 | mds->balancer->hit_dir(dn->get_dir(), META_POP_IWR); |
7c673cae FG |
7921 | |
7922 | // reply | |
7923 | respond_to_request(mdr, 0); | |
7924 | ||
7925 | // removing a new dn? | |
7926 | dn->get_dir()->try_remove_unlinked_dn(dn); | |
7927 | ||
7928 | // clean up ? | |
7929 | // respond_to_request() drops locks. So stray reintegration can race with us. | |
7930 | if (straydn && !straydn->get_projected_linkage()->is_null()) { | |
7931 | // Tip off the MDCache that this dentry is a stray that | |
7932 | // might be elegible for purge. | |
7933 | mdcache->notify_stray(straydn); | |
7934 | } | |
7935 | } | |
7936 | ||
7937 | bool Server::_rmdir_prepare_witness(MDRequestRef& mdr, mds_rank_t who, vector<CDentry*>& trace, CDentry *straydn) | |
7938 | { | |
7939 | if (mds->is_cluster_degraded() && | |
7940 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(who)) { | |
7941 | dout(10) << "_rmdir_prepare_witness mds." << who << " is not active" << dendl; | |
f67539c2 | 7942 | if (mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
7943 | mds->wait_for_active_peer(who, new C_MDS_RetryRequest(mdcache, mdr)); |
7944 | return false; | |
7945 | } | |
7946 | ||
7947 | dout(10) << "_rmdir_prepare_witness mds." << who << dendl; | |
f67539c2 | 7948 | auto req = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_RMDIRPREP); |
7c673cae FG |
7949 | req->srcdnpath = filepath(trace.front()->get_dir()->ino()); |
7950 | for (auto dn : trace) | |
94b18763 | 7951 | req->srcdnpath.push_dentry(dn->get_name()); |
9f95a23c | 7952 | mdcache->encode_replica_stray(straydn, who, req->straybl); |
11fdf7f2 TL |
7953 | if (mdr->more()->desti_srnode) |
7954 | encode(*mdr->more()->desti_srnode, req->desti_snapbl); | |
7c673cae FG |
7955 | |
7956 | req->op_stamp = mdr->get_op_stamp(); | |
7957 | mds->send_message_mds(req, who); | |
7958 | ||
f67539c2 TL |
7959 | ceph_assert(mdr->more()->waiting_on_peer.count(who) == 0); |
7960 | mdr->more()->waiting_on_peer.insert(who); | |
7c673cae FG |
7961 | return true; |
7962 | } | |
7963 | ||
f67539c2 | 7964 | struct C_MDS_PeerRmdirPrep : public ServerLogContext { |
7c673cae | 7965 | CDentry *dn, *straydn; |
f67539c2 | 7966 | C_MDS_PeerRmdirPrep(Server *s, MDRequestRef& r, CDentry *d, CDentry *st) |
7c673cae FG |
7967 | : ServerLogContext(s, r), dn(d), straydn(st) {} |
7968 | void finish(int r) override { | |
f67539c2 | 7969 | server->_logged_peer_rmdir(mdr, dn, straydn); |
7c673cae FG |
7970 | } |
7971 | }; | |
7972 | ||
f67539c2 | 7973 | struct C_MDS_PeerRmdirCommit : public ServerContext { |
7c673cae | 7974 | MDRequestRef mdr; |
31f18b77 | 7975 | CDentry *straydn; |
f67539c2 | 7976 | C_MDS_PeerRmdirCommit(Server *s, MDRequestRef& r, CDentry *sd) |
31f18b77 | 7977 | : ServerContext(s), mdr(r), straydn(sd) { } |
7c673cae | 7978 | void finish(int r) override { |
f67539c2 | 7979 | server->_commit_peer_rmdir(mdr, r, straydn); |
7c673cae FG |
7980 | } |
7981 | }; | |
7982 | ||
f67539c2 | 7983 | void Server::handle_peer_rmdir_prep(MDRequestRef& mdr) |
7c673cae | 7984 | { |
f67539c2 TL |
7985 | dout(10) << "handle_peer_rmdir_prep " << *mdr |
7986 | << " " << mdr->peer_request->srcdnpath | |
7987 | << " to " << mdr->peer_request->destdnpath | |
7c673cae FG |
7988 | << dendl; |
7989 | ||
7990 | vector<CDentry*> trace; | |
f67539c2 | 7991 | filepath srcpath(mdr->peer_request->srcdnpath); |
7c673cae FG |
7992 | dout(10) << " src " << srcpath << dendl; |
7993 | CInode *in; | |
f67539c2 | 7994 | CF_MDS_RetryRequestFactory cf(mdcache, mdr, false); |
9f95a23c TL |
7995 | int r = mdcache->path_traverse(mdr, cf, srcpath, |
7996 | MDS_TRAVERSE_DISCOVER | MDS_TRAVERSE_PATH_LOCKED, | |
7997 | &trace, &in); | |
7c673cae | 7998 | if (r > 0) return; |
f67539c2 | 7999 | if (r == -CEPHFS_ESTALE) { |
7c673cae | 8000 | mdcache->find_ino_peers(srcpath.get_ino(), new C_MDS_RetryRequest(mdcache, mdr), |
f67539c2 | 8001 | mdr->peer_to_mds, true); |
7c673cae FG |
8002 | return; |
8003 | } | |
11fdf7f2 | 8004 | ceph_assert(r == 0); |
91327a77 | 8005 | CDentry *dn = trace.back(); |
7c673cae FG |
8006 | dout(10) << " dn " << *dn << dendl; |
8007 | mdr->pin(dn); | |
8008 | ||
11fdf7f2 | 8009 | ceph_assert(mdr->straydn); |
7c673cae FG |
8010 | CDentry *straydn = mdr->straydn; |
8011 | dout(10) << " straydn " << *straydn << dendl; | |
8012 | ||
f67539c2 | 8013 | mdr->set_op_stamp(mdr->peer_request->op_stamp); |
7c673cae FG |
8014 | |
8015 | rmdir_rollback rollback; | |
8016 | rollback.reqid = mdr->reqid; | |
8017 | rollback.src_dir = dn->get_dir()->dirfrag(); | |
11fdf7f2 | 8018 | rollback.src_dname = dn->get_name(); |
7c673cae | 8019 | rollback.dest_dir = straydn->get_dir()->dirfrag(); |
11fdf7f2 | 8020 | rollback.dest_dname = straydn->get_name(); |
f67539c2 | 8021 | if (mdr->peer_request->desti_snapbl.length()) { |
11fdf7f2 TL |
8022 | if (in->snaprealm) { |
8023 | encode(true, rollback.snapbl); | |
8024 | in->encode_snap_blob(rollback.snapbl); | |
8025 | } else { | |
8026 | encode(false, rollback.snapbl); | |
8027 | } | |
8028 | } | |
8029 | encode(rollback, mdr->more()->rollback_bl); | |
8030 | // FIXME: rollback snaprealm | |
7c673cae FG |
8031 | dout(20) << " rollback is " << mdr->more()->rollback_bl.length() << " bytes" << dendl; |
8032 | ||
8033 | // set up commit waiter | |
f67539c2 | 8034 | mdr->more()->peer_commit = new C_MDS_PeerRmdirCommit(this, mdr, straydn); |
7c673cae | 8035 | |
11fdf7f2 TL |
8036 | straydn->push_projected_linkage(in); |
8037 | dn->push_projected_linkage(); | |
7c673cae | 8038 | |
11fdf7f2 TL |
8039 | ceph_assert(straydn->first >= in->first); |
8040 | in->first = straydn->first; | |
7c673cae | 8041 | |
11fdf7f2 TL |
8042 | if (!in->has_subtree_root_dirfrag(mds->get_nodeid())) { |
8043 | dout(10) << " no auth subtree in " << *in << ", skipping journal" << dendl; | |
f67539c2 | 8044 | _logged_peer_rmdir(mdr, dn, straydn); |
7c673cae FG |
8045 | return; |
8046 | } | |
8047 | ||
e306af50 | 8048 | mdr->ls = mdlog->get_current_segment(); |
f67539c2 TL |
8049 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_rmdir", mdr->reqid, mdr->peer_to_mds, |
8050 | EPeerUpdate::OP_PREPARE, EPeerUpdate::RMDIR); | |
7c673cae FG |
8051 | mdlog->start_entry(le); |
8052 | le->rollback = mdr->more()->rollback_bl; | |
8053 | ||
8054 | le->commit.add_dir_context(straydn->get_dir()); | |
8055 | le->commit.add_primary_dentry(straydn, in, true); | |
f67539c2 | 8056 | // peer: no need to journal original dentry |
7c673cae FG |
8057 | |
8058 | dout(10) << " noting renamed (unlinked) dir ino " << in->ino() << " in metablob" << dendl; | |
8059 | le->commit.renamed_dirino = in->ino(); | |
8060 | ||
8061 | mdcache->project_subtree_rename(in, dn->get_dir(), straydn->get_dir()); | |
f67539c2 | 8062 | mdcache->add_uncommitted_peer(mdr->reqid, mdr->ls, mdr->peer_to_mds); |
7c673cae | 8063 | |
f67539c2 TL |
8064 | mdr->more()->peer_update_journaled = true; |
8065 | submit_mdlog_entry(le, new C_MDS_PeerRmdirPrep(this, mdr, dn, straydn), | |
7c673cae FG |
8066 | mdr, __func__); |
8067 | mdlog->flush(); | |
8068 | } | |
8069 | ||
f67539c2 | 8070 | void Server::_logged_peer_rmdir(MDRequestRef& mdr, CDentry *dn, CDentry *straydn) |
7c673cae | 8071 | { |
f67539c2 | 8072 | dout(10) << "_logged_peer_rmdir " << *mdr << " on " << *dn << dendl; |
11fdf7f2 TL |
8073 | CInode *in = dn->get_linkage()->get_inode(); |
8074 | ||
8075 | bool new_realm; | |
f67539c2 | 8076 | if (mdr->peer_request->desti_snapbl.length()) { |
11fdf7f2 | 8077 | new_realm = !in->snaprealm; |
f67539c2 | 8078 | in->decode_snap_blob(mdr->peer_request->desti_snapbl); |
11fdf7f2 | 8079 | ceph_assert(in->snaprealm); |
11fdf7f2 TL |
8080 | } else { |
8081 | new_realm = false; | |
8082 | } | |
7c673cae FG |
8083 | |
8084 | // update our cache now, so we are consistent with what is in the journal | |
8085 | // when we journal a subtree map | |
7c673cae FG |
8086 | dn->get_dir()->unlink_inode(dn); |
8087 | straydn->pop_projected_linkage(); | |
8088 | dn->pop_projected_linkage(); | |
11fdf7f2 | 8089 | |
f67539c2 | 8090 | mdcache->adjust_subtree_after_rename(in, dn->get_dir(), mdr->more()->peer_update_journaled); |
11fdf7f2 TL |
8091 | |
8092 | if (new_realm) | |
8093 | mdcache->do_realm_invalidate_and_update_notify(in, CEPH_SNAP_OP_SPLIT, false); | |
7c673cae FG |
8094 | |
8095 | // done. | |
f67539c2 | 8096 | mdr->reset_peer_request(); |
7c673cae FG |
8097 | mdr->straydn = 0; |
8098 | ||
8099 | if (!mdr->aborted) { | |
f67539c2 TL |
8100 | auto reply = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_RMDIRPREPACK); |
8101 | if (!mdr->more()->peer_update_journaled) | |
11fdf7f2 | 8102 | reply->mark_not_journaled(); |
f67539c2 | 8103 | mds->send_message_mds(reply, mdr->peer_to_mds); |
7c673cae FG |
8104 | } else { |
8105 | dout(10) << " abort flag set, finishing" << dendl; | |
8106 | mdcache->request_finish(mdr); | |
8107 | } | |
8108 | } | |
8109 | ||
f67539c2 | 8110 | void Server::handle_peer_rmdir_prep_ack(MDRequestRef& mdr, const cref_t<MMDSPeerRequest> &ack) |
7c673cae | 8111 | { |
f67539c2 | 8112 | dout(10) << "handle_peer_rmdir_prep_ack " << *mdr |
7c673cae FG |
8113 | << " " << *ack << dendl; |
8114 | ||
8115 | mds_rank_t from = mds_rank_t(ack->get_source().num()); | |
8116 | ||
f67539c2 | 8117 | mdr->more()->peers.insert(from); |
7c673cae FG |
8118 | mdr->more()->witnessed.insert(from); |
8119 | if (!ack->is_not_journaled()) | |
f67539c2 | 8120 | mdr->more()->has_journaled_peers = true; |
7c673cae FG |
8121 | |
8122 | // remove from waiting list | |
f67539c2 TL |
8123 | ceph_assert(mdr->more()->waiting_on_peer.count(from)); |
8124 | mdr->more()->waiting_on_peer.erase(from); | |
7c673cae | 8125 | |
f67539c2 | 8126 | if (mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
8127 | dispatch_client_request(mdr); // go again! |
8128 | else | |
f67539c2 | 8129 | dout(10) << "still waiting on peers " << mdr->more()->waiting_on_peer << dendl; |
7c673cae FG |
8130 | } |
8131 | ||
f67539c2 | 8132 | void Server::_commit_peer_rmdir(MDRequestRef& mdr, int r, CDentry *straydn) |
7c673cae | 8133 | { |
f67539c2 | 8134 | dout(10) << "_commit_peer_rmdir " << *mdr << " r=" << r << dendl; |
e306af50 | 8135 | |
7c673cae | 8136 | if (r == 0) { |
f67539c2 | 8137 | if (mdr->more()->peer_update_journaled) { |
31f18b77 FG |
8138 | CInode *strayin = straydn->get_projected_linkage()->get_inode(); |
8139 | if (strayin && !strayin->snaprealm) | |
8140 | mdcache->clear_dirty_bits_for_stray(strayin); | |
8141 | } | |
8142 | ||
7c673cae FG |
8143 | mdr->cleanup(); |
8144 | ||
f67539c2 | 8145 | if (mdr->more()->peer_update_journaled) { |
7c673cae | 8146 | // write a commit to the journal |
f67539c2 TL |
8147 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_rmdir_commit", mdr->reqid, |
8148 | mdr->peer_to_mds, EPeerUpdate::OP_COMMIT, | |
8149 | EPeerUpdate::RMDIR); | |
7c673cae | 8150 | mdlog->start_entry(le); |
f67539c2 | 8151 | submit_mdlog_entry(le, new C_MDS_CommittedPeer(this, mdr), mdr, __func__); |
7c673cae FG |
8152 | mdlog->flush(); |
8153 | } else { | |
f67539c2 | 8154 | _committed_peer(mdr); |
7c673cae FG |
8155 | } |
8156 | } else { | |
8157 | // abort | |
f67539c2 | 8158 | do_rmdir_rollback(mdr->more()->rollback_bl, mdr->peer_to_mds, mdr); |
7c673cae FG |
8159 | } |
8160 | } | |
8161 | ||
8162 | struct C_MDS_LoggedRmdirRollback : public ServerLogContext { | |
8163 | metareqid_t reqid; | |
8164 | CDentry *dn; | |
8165 | CDentry *straydn; | |
8166 | C_MDS_LoggedRmdirRollback(Server *s, MDRequestRef& m, metareqid_t mr, CDentry *d, CDentry *st) | |
8167 | : ServerLogContext(s, m), reqid(mr), dn(d), straydn(st) {} | |
8168 | void finish(int r) override { | |
8169 | server->_rmdir_rollback_finish(mdr, reqid, dn, straydn); | |
8170 | } | |
8171 | }; | |
8172 | ||
f67539c2 | 8173 | void Server::do_rmdir_rollback(bufferlist &rbl, mds_rank_t leader, MDRequestRef& mdr) |
7c673cae FG |
8174 | { |
8175 | // unlink the other rollback methods, the rmdir rollback is only | |
8176 | // needed to record the subtree changes in the journal for inode | |
8177 | // replicas who are auth for empty dirfrags. no actual changes to | |
8178 | // the file system are taking place here, so there is no Mutation. | |
8179 | ||
8180 | rmdir_rollback rollback; | |
11fdf7f2 TL |
8181 | auto p = rbl.cbegin(); |
8182 | decode(rollback, p); | |
7c673cae FG |
8183 | |
8184 | dout(10) << "do_rmdir_rollback on " << rollback.reqid << dendl; | |
f67539c2 | 8185 | mdcache->add_rollback(rollback.reqid, leader); // need to finish this update before resolve finishes |
11fdf7f2 | 8186 | ceph_assert(mdr || mds->is_resolve()); |
7c673cae FG |
8187 | |
8188 | CDir *dir = mdcache->get_dirfrag(rollback.src_dir); | |
8189 | if (!dir) | |
8190 | dir = mdcache->get_dirfrag(rollback.src_dir.ino, rollback.src_dname); | |
11fdf7f2 | 8191 | ceph_assert(dir); |
7c673cae | 8192 | CDentry *dn = dir->lookup(rollback.src_dname); |
11fdf7f2 | 8193 | ceph_assert(dn); |
7c673cae | 8194 | dout(10) << " dn " << *dn << dendl; |
11fdf7f2 TL |
8195 | CDir *straydir = mdcache->get_dirfrag(rollback.dest_dir); |
8196 | ceph_assert(straydir); | |
8197 | CDentry *straydn = straydir->lookup(rollback.dest_dname); | |
8198 | ceph_assert(straydn); | |
8199 | dout(10) << " straydn " << *straydn << dendl; | |
7c673cae FG |
8200 | CInode *in = straydn->get_linkage()->get_inode(); |
8201 | ||
11fdf7f2 TL |
8202 | dn->push_projected_linkage(in); |
8203 | straydn->push_projected_linkage(); | |
7c673cae | 8204 | |
11fdf7f2 TL |
8205 | if (rollback.snapbl.length() && in->snaprealm) { |
8206 | bool hadrealm; | |
8207 | auto p = rollback.snapbl.cbegin(); | |
8208 | decode(hadrealm, p); | |
8209 | if (hadrealm) { | |
8210 | decode(in->snaprealm->srnode, p); | |
8211 | } else { | |
8212 | in->snaprealm->merge_to(dir->get_inode()->find_snaprealm()); | |
8213 | } | |
8214 | } | |
7c673cae | 8215 | |
f67539c2 | 8216 | if (mdr && !mdr->more()->peer_update_journaled) { |
11fdf7f2 | 8217 | ceph_assert(!in->has_subtree_root_dirfrag(mds->get_nodeid())); |
7c673cae | 8218 | |
11fdf7f2 | 8219 | _rmdir_rollback_finish(mdr, rollback.reqid, dn, straydn); |
7c673cae FG |
8220 | return; |
8221 | } | |
8222 | ||
7c673cae | 8223 | |
f67539c2 TL |
8224 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_rmdir_rollback", rollback.reqid, leader, |
8225 | EPeerUpdate::OP_ROLLBACK, EPeerUpdate::RMDIR); | |
7c673cae FG |
8226 | mdlog->start_entry(le); |
8227 | ||
8228 | le->commit.add_dir_context(dn->get_dir()); | |
8229 | le->commit.add_primary_dentry(dn, in, true); | |
f67539c2 | 8230 | // peer: no need to journal straydn |
7c673cae FG |
8231 | |
8232 | dout(10) << " noting renamed (unlinked) dir ino " << in->ino() << " in metablob" << dendl; | |
8233 | le->commit.renamed_dirino = in->ino(); | |
8234 | ||
8235 | mdcache->project_subtree_rename(in, straydn->get_dir(), dn->get_dir()); | |
8236 | ||
8237 | submit_mdlog_entry(le, | |
8238 | new C_MDS_LoggedRmdirRollback(this, mdr,rollback.reqid, | |
8239 | dn, straydn), | |
8240 | mdr, __func__); | |
8241 | mdlog->flush(); | |
8242 | } | |
8243 | ||
8244 | void Server::_rmdir_rollback_finish(MDRequestRef& mdr, metareqid_t reqid, CDentry *dn, CDentry *straydn) | |
8245 | { | |
8246 | dout(10) << "_rmdir_rollback_finish " << reqid << dendl; | |
8247 | ||
8248 | straydn->get_dir()->unlink_inode(straydn); | |
8249 | dn->pop_projected_linkage(); | |
8250 | straydn->pop_projected_linkage(); | |
8251 | ||
8252 | CInode *in = dn->get_linkage()->get_inode(); | |
11fdf7f2 | 8253 | mdcache->adjust_subtree_after_rename(in, straydn->get_dir(), |
f67539c2 | 8254 | !mdr || mdr->more()->peer_update_journaled); |
11fdf7f2 | 8255 | |
7c673cae FG |
8256 | if (mds->is_resolve()) { |
8257 | CDir *root = mdcache->get_subtree_root(straydn->get_dir()); | |
8258 | mdcache->try_trim_non_auth_subtree(root); | |
8259 | } | |
8260 | ||
8261 | if (mdr) | |
8262 | mdcache->request_finish(mdr); | |
8263 | ||
e306af50 | 8264 | mdcache->finish_rollback(reqid, mdr); |
7c673cae FG |
8265 | } |
8266 | ||
8267 | ||
8268 | /** _dir_is_nonempty[_unlocked] | |
8269 | * | |
8270 | * check if a directory is non-empty (i.e. we can rmdir it). | |
8271 | * | |
8272 | * the unlocked varient this is a fastpath check. we can't really be | |
8273 | * sure until we rdlock the filelock. | |
8274 | */ | |
8275 | bool Server::_dir_is_nonempty_unlocked(MDRequestRef& mdr, CInode *in) | |
8276 | { | |
8277 | dout(10) << "dir_is_nonempty_unlocked " << *in << dendl; | |
11fdf7f2 | 8278 | ceph_assert(in->is_auth()); |
7c673cae | 8279 | |
9f95a23c TL |
8280 | if (in->filelock.is_cached()) |
8281 | return false; // there can be pending async create/unlink. don't know. | |
7c673cae FG |
8282 | if (in->snaprealm && in->snaprealm->srnode.snaps.size()) |
8283 | return true; // in a snapshot! | |
8284 | ||
9f95a23c TL |
8285 | auto&& ls = in->get_dirfrags(); |
8286 | for (const auto& dir : ls) { | |
7c673cae FG |
8287 | // is the frag obviously non-empty? |
8288 | if (dir->is_auth()) { | |
8289 | if (dir->get_projected_fnode()->fragstat.size()) { | |
8290 | dout(10) << "dir_is_nonempty_unlocked dirstat has " | |
8291 | << dir->get_projected_fnode()->fragstat.size() << " items " << *dir << dendl; | |
8292 | return true; | |
8293 | } | |
8294 | } | |
8295 | } | |
8296 | ||
8297 | return false; | |
8298 | } | |
8299 | ||
8300 | bool Server::_dir_is_nonempty(MDRequestRef& mdr, CInode *in) | |
8301 | { | |
8302 | dout(10) << "dir_is_nonempty " << *in << dendl; | |
11fdf7f2 TL |
8303 | ceph_assert(in->is_auth()); |
8304 | ceph_assert(in->filelock.can_read(mdr->get_client())); | |
7c673cae FG |
8305 | |
8306 | frag_info_t dirstat; | |
8307 | version_t dirstat_version = in->get_projected_inode()->dirstat.version; | |
8308 | ||
9f95a23c TL |
8309 | auto&& ls = in->get_dirfrags(); |
8310 | for (const auto& dir : ls) { | |
f67539c2 | 8311 | const auto& pf = dir->get_projected_fnode(); |
7c673cae FG |
8312 | if (pf->fragstat.size()) { |
8313 | dout(10) << "dir_is_nonempty dirstat has " | |
8314 | << pf->fragstat.size() << " items " << *dir << dendl; | |
8315 | return true; | |
8316 | } | |
8317 | ||
8318 | if (pf->accounted_fragstat.version == dirstat_version) | |
8319 | dirstat.add(pf->accounted_fragstat); | |
8320 | else | |
8321 | dirstat.add(pf->fragstat); | |
8322 | } | |
8323 | ||
8324 | return dirstat.size() != in->get_projected_inode()->dirstat.size(); | |
8325 | } | |
8326 | ||
8327 | ||
8328 | // ====================================================== | |
8329 | ||
8330 | ||
8331 | class C_MDS_rename_finish : public ServerLogContext { | |
8332 | CDentry *srcdn; | |
8333 | CDentry *destdn; | |
8334 | CDentry *straydn; | |
8335 | public: | |
8336 | C_MDS_rename_finish(Server *s, MDRequestRef& r, | |
8337 | CDentry *sdn, CDentry *ddn, CDentry *stdn) : | |
8338 | ServerLogContext(s, r), | |
8339 | srcdn(sdn), destdn(ddn), straydn(stdn) { } | |
8340 | void finish(int r) override { | |
11fdf7f2 | 8341 | ceph_assert(r == 0); |
7c673cae FG |
8342 | server->_rename_finish(mdr, srcdn, destdn, straydn); |
8343 | } | |
8344 | }; | |
8345 | ||
8346 | ||
8347 | /** handle_client_rename | |
8348 | * | |
f67539c2 | 8349 | * rename leader is the destdn auth. this is because cached inodes |
7c673cae FG |
8350 | * must remain connected. thus, any replica of srci, must also |
8351 | * replicate destdn, and possibly straydn, so that srci (and | |
8352 | * destdn->inode) remain connected during the rename. | |
8353 | * | |
f67539c2 | 8354 | * to do this, we freeze srci, then leader (destdn auth) verifies that |
7c673cae FG |
8355 | * all other nodes have also replciated destdn and straydn. note that |
8356 | * destdn replicas need not also replicate srci. this only works when | |
f67539c2 | 8357 | * destdn is leader. |
7c673cae FG |
8358 | * |
8359 | * This function takes responsibility for the passed mdr. | |
8360 | */ | |
8361 | void Server::handle_client_rename(MDRequestRef& mdr) | |
8362 | { | |
f67539c2 | 8363 | const auto& req = mdr->client_request; |
7c673cae FG |
8364 | dout(7) << "handle_client_rename " << *req << dendl; |
8365 | ||
8366 | filepath destpath = req->get_filepath(); | |
8367 | filepath srcpath = req->get_filepath2(); | |
91327a77 | 8368 | if (srcpath.is_last_dot_or_dotdot() || destpath.is_last_dot_or_dotdot()) { |
f67539c2 TL |
8369 | respond_to_request(mdr, -CEPHFS_EBUSY); |
8370 | return; | |
8371 | } | |
8372 | ||
8373 | if (req->get_alternate_name().size() > alternate_name_max) { | |
8374 | dout(10) << " alternate_name longer than " << alternate_name_max << dendl; | |
8375 | respond_to_request(mdr, -CEPHFS_ENAMETOOLONG); | |
91327a77 AA |
8376 | return; |
8377 | } | |
8378 | ||
9f95a23c TL |
8379 | auto [destdn, srcdn] = rdlock_two_paths_xlock_destdn(mdr, true); |
8380 | if (!destdn) | |
8381 | return; | |
7c673cae | 8382 | |
7c673cae | 8383 | dout(10) << " destdn " << *destdn << dendl; |
7c673cae | 8384 | CDir *destdir = destdn->get_dir(); |
11fdf7f2 | 8385 | ceph_assert(destdir->is_auth()); |
9f95a23c | 8386 | CDentry::linkage_t *destdnl = destdn->get_projected_linkage(); |
7c673cae | 8387 | |
7c673cae | 8388 | dout(10) << " srcdn " << *srcdn << dendl; |
11fdf7f2 | 8389 | CDir *srcdir = srcdn->get_dir(); |
7c673cae FG |
8390 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); |
8391 | CInode *srci = srcdnl->get_inode(); | |
8392 | dout(10) << " srci " << *srci << dendl; | |
8393 | ||
9f95a23c TL |
8394 | // -- some sanity checks -- |
8395 | if (destdn == srcdn) { | |
8396 | dout(7) << "rename src=dest, noop" << dendl; | |
8397 | respond_to_request(mdr, 0); | |
8398 | return; | |
8399 | } | |
8400 | ||
8401 | // dest a child of src? | |
8402 | // e.g. mv /usr /usr/foo | |
8403 | if (srci->is_dir() && srci->is_projected_ancestor_of(destdir->get_inode())) { | |
8404 | dout(7) << "cannot rename item to be a child of itself" << dendl; | |
f67539c2 | 8405 | respond_to_request(mdr, -CEPHFS_EINVAL); |
9f95a23c TL |
8406 | return; |
8407 | } | |
8408 | ||
8409 | // is this a stray migration, reintegration or merge? (sanity checks!) | |
8410 | if (mdr->reqid.name.is_mds() && | |
8411 | !(MDS_INO_IS_STRAY(srcpath.get_ino()) && | |
8412 | MDS_INO_IS_STRAY(destpath.get_ino())) && | |
8413 | !(destdnl->is_remote() && | |
8414 | destdnl->get_remote_ino() == srci->ino())) { | |
f67539c2 | 8415 | respond_to_request(mdr, -CEPHFS_EINVAL); // actually, this won't reply, but whatev. |
9f95a23c TL |
8416 | return; |
8417 | } | |
8418 | ||
7c673cae FG |
8419 | CInode *oldin = 0; |
8420 | if (!destdnl->is_null()) { | |
8421 | //dout(10) << "dest dn exists " << *destdn << dendl; | |
8422 | oldin = mdcache->get_dentry_inode(destdn, mdr, true); | |
8423 | if (!oldin) return; | |
8424 | dout(10) << " oldin " << *oldin << dendl; | |
7c673cae FG |
8425 | |
8426 | // non-empty dir? do trivial fast unlocked check, do another check later with read locks | |
8427 | if (oldin->is_dir() && _dir_is_nonempty_unlocked(mdr, oldin)) { | |
f67539c2 | 8428 | respond_to_request(mdr, -CEPHFS_ENOTEMPTY); |
7c673cae FG |
8429 | return; |
8430 | } | |
181888fb | 8431 | |
9f95a23c TL |
8432 | // mv /some/thing /to/some/existing_other_thing |
8433 | if (oldin->is_dir() && !srci->is_dir()) { | |
f67539c2 | 8434 | respond_to_request(mdr, -CEPHFS_EISDIR); |
9f95a23c TL |
8435 | return; |
8436 | } | |
8437 | if (!oldin->is_dir() && srci->is_dir()) { | |
f67539c2 | 8438 | respond_to_request(mdr, -CEPHFS_ENOTDIR); |
9f95a23c TL |
8439 | return; |
8440 | } | |
8441 | if (srci == oldin && !srcdir->inode->is_stray()) { | |
8442 | respond_to_request(mdr, 0); // no-op. POSIX makes no sense. | |
8443 | return; | |
7c673cae | 8444 | } |
f67539c2 TL |
8445 | if (destdn->get_alternate_name() != req->get_alternate_name()) { |
8446 | /* the dentry exists but the alternate_names do not match, fail... */ | |
8447 | respond_to_request(mdr, -CEPHFS_EINVAL); | |
8448 | return; | |
8449 | } | |
7c673cae FG |
8450 | } |
8451 | ||
9f95a23c TL |
8452 | vector<CDentry*>& srctrace = mdr->dn[1]; |
8453 | vector<CDentry*>& desttrace = mdr->dn[0]; | |
7c673cae FG |
8454 | |
8455 | // src+dest traces _must_ share a common ancestor for locking to prevent orphans | |
8456 | if (destpath.get_ino() != srcpath.get_ino() && | |
8457 | !(req->get_source().is_mds() && | |
9f95a23c | 8458 | MDS_INO_IS_STRAY(srcpath.get_ino()))) { // <-- mds 'rename' out of stray dir is ok! |
7c673cae FG |
8459 | CInode *srcbase = srctrace[0]->get_dir()->get_inode(); |
8460 | CInode *destbase = desttrace[0]->get_dir()->get_inode(); | |
8461 | // ok, extend srctrace toward root until it is an ancestor of desttrace. | |
8462 | while (srcbase != destbase && | |
8463 | !srcbase->is_projected_ancestor_of(destbase)) { | |
8464 | CDentry *pdn = srcbase->get_projected_parent_dn(); | |
8465 | srctrace.insert(srctrace.begin(), pdn); | |
8466 | dout(10) << "rename prepending srctrace with " << *pdn << dendl; | |
8467 | srcbase = pdn->get_dir()->get_inode(); | |
8468 | } | |
8469 | ||
8470 | // then, extend destpath until it shares the same parent inode as srcpath. | |
8471 | while (destbase != srcbase) { | |
8472 | CDentry *pdn = destbase->get_projected_parent_dn(); | |
8473 | desttrace.insert(desttrace.begin(), pdn); | |
7c673cae FG |
8474 | dout(10) << "rename prepending desttrace with " << *pdn << dendl; |
8475 | destbase = pdn->get_dir()->get_inode(); | |
8476 | } | |
8477 | dout(10) << "rename src and dest traces now share common ancestor " << *destbase << dendl; | |
8478 | } | |
8479 | ||
7c673cae | 8480 | |
11fdf7f2 | 8481 | bool linkmerge = srcdnl->get_inode() == destdnl->get_inode(); |
7c673cae FG |
8482 | if (linkmerge) |
8483 | dout(10) << " this is a link merge" << dendl; | |
8484 | ||
8485 | // -- create stray dentry? -- | |
8486 | CDentry *straydn = NULL; | |
8487 | if (destdnl->is_primary() && !linkmerge) { | |
8488 | straydn = prepare_stray_dentry(mdr, destdnl->get_inode()); | |
8489 | if (!straydn) | |
8490 | return; | |
8491 | dout(10) << " straydn is " << *straydn << dendl; | |
8492 | } else if (mdr->straydn) { | |
8493 | mdr->unpin(mdr->straydn); | |
8494 | mdr->straydn = NULL; | |
8495 | } | |
8496 | ||
7c673cae FG |
8497 | |
8498 | // -- locks -- | |
9f95a23c TL |
8499 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
8500 | MutationImpl::LockOpVec lov; | |
7c673cae | 8501 | |
9f95a23c TL |
8502 | // we need to update srci's ctime. xlock its least contended lock to do that... |
8503 | lov.add_xlock(&srci->linklock); | |
8504 | lov.add_xlock(&srci->snaplock); | |
7c673cae | 8505 | |
9f95a23c TL |
8506 | if (oldin) { |
8507 | // xlock oldin (for nlink--) | |
8508 | lov.add_xlock(&oldin->linklock); | |
8509 | lov.add_xlock(&oldin->snaplock); | |
8510 | if (oldin->is_dir()) { | |
8511 | ceph_assert(srci->is_dir()); | |
11fdf7f2 | 8512 | lov.add_rdlock(&oldin->filelock); // to verify it's empty |
7c673cae | 8513 | |
9f95a23c TL |
8514 | // adjust locking order? |
8515 | int cmp = mdr->compare_paths(); | |
8516 | if (cmp < 0 || (cmp == 0 && oldin->ino() < srci->ino())) | |
8517 | std::reverse(lov.begin(), lov.end()); | |
8518 | } else { | |
8519 | ceph_assert(!srci->is_dir()); | |
8520 | // adjust locking order; | |
8521 | if (srci->ino() > oldin->ino()) | |
8522 | std::reverse(lov.begin(), lov.end()); | |
8523 | } | |
8524 | } | |
8525 | ||
8526 | // straydn? | |
8527 | if (straydn) { | |
8528 | lov.add_wrlock(&straydn->get_dir()->inode->filelock); | |
8529 | lov.add_wrlock(&straydn->get_dir()->inode->nestlock); | |
8530 | lov.add_xlock(&straydn->lock); | |
8531 | } | |
8532 | ||
8533 | CInode *auth_pin_freeze = !srcdn->is_auth() && srcdnl->is_primary() ? srci : nullptr; | |
8534 | if (!mds->locker->acquire_locks(mdr, lov, auth_pin_freeze)) | |
8535 | return; | |
8536 | ||
8537 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
8538 | } | |
7c673cae | 8539 | |
11fdf7f2 TL |
8540 | if (linkmerge) |
8541 | ceph_assert(srcdir->inode->is_stray() && srcdnl->is_primary() && destdnl->is_remote()); | |
8542 | ||
7c673cae | 8543 | if ((!mdr->has_more() || mdr->more()->witnessed.empty())) { |
11fdf7f2 | 8544 | if (!check_access(mdr, srcdir->get_inode(), MAY_WRITE)) |
7c673cae FG |
8545 | return; |
8546 | ||
8547 | if (!check_access(mdr, destdn->get_dir()->get_inode(), MAY_WRITE)) | |
8548 | return; | |
8549 | ||
20effc67 TL |
8550 | if (!linkmerge && !check_fragment_space(mdr, destdn->get_dir())) |
8551 | return; | |
8552 | ||
8553 | if (!linkmerge && !check_dir_max_entries(mdr, destdn->get_dir())) | |
7c673cae FG |
8554 | return; |
8555 | ||
8556 | if (!check_access(mdr, srci, MAY_WRITE)) | |
8557 | return; | |
8558 | } | |
8559 | ||
8560 | // with read lock, really verify oldin is empty | |
8561 | if (oldin && | |
8562 | oldin->is_dir() && | |
8563 | _dir_is_nonempty(mdr, oldin)) { | |
f67539c2 | 8564 | respond_to_request(mdr, -CEPHFS_ENOTEMPTY); |
7c673cae FG |
8565 | return; |
8566 | } | |
8567 | ||
11fdf7f2 | 8568 | /* project_snaprealm_past_parent() will do this job |
7c673cae FG |
8569 | * |
8570 | // moving between snaprealms? | |
8571 | if (srcdnl->is_primary() && srci->is_multiversion() && !srci->snaprealm) { | |
8572 | SnapRealm *srcrealm = srci->find_snaprealm(); | |
8573 | SnapRealm *destrealm = destdn->get_dir()->inode->find_snaprealm(); | |
8574 | if (srcrealm != destrealm && | |
8575 | (srcrealm->get_newest_seq() + 1 > srcdn->first || | |
8576 | destrealm->get_newest_seq() + 1 > srcdn->first)) { | |
8577 | dout(10) << " renaming between snaprealms, creating snaprealm for " << *srci << dendl; | |
8578 | mdcache->snaprealm_create(mdr, srci); | |
8579 | return; | |
8580 | } | |
8581 | } | |
8582 | */ | |
8583 | ||
adb31ebb TL |
8584 | SnapRealm *dest_realm = nullptr; |
8585 | SnapRealm *src_realm = nullptr; | |
8586 | if (!linkmerge) { | |
8587 | dest_realm = destdir->inode->find_snaprealm(); | |
8588 | if (srcdir->inode == destdir->inode) | |
8589 | src_realm = dest_realm; | |
8590 | else | |
8591 | src_realm = srcdir->inode->find_snaprealm(); | |
8592 | if (src_realm != dest_realm && | |
8593 | src_realm->get_subvolume_ino() != dest_realm->get_subvolume_ino()) { | |
f67539c2 | 8594 | respond_to_request(mdr, -CEPHFS_EXDEV); |
adb31ebb TL |
8595 | return; |
8596 | } | |
8597 | } | |
8598 | ||
11fdf7f2 | 8599 | ceph_assert(g_conf()->mds_kill_rename_at != 1); |
7c673cae FG |
8600 | |
8601 | // -- open all srcdn inode frags, if any -- | |
8602 | // we need these open so that auth can properly delegate from inode to dirfrags | |
8603 | // after the inode is _ours_. | |
8604 | if (srcdnl->is_primary() && | |
8605 | !srcdn->is_auth() && | |
8606 | srci->is_dir()) { | |
8607 | dout(10) << "srci is remote dir, setting stickydirs and opening all frags" << dendl; | |
8608 | mdr->set_stickydirs(srci); | |
8609 | ||
11fdf7f2 TL |
8610 | frag_vec_t leaves; |
8611 | srci->dirfragtree.get_leaves(leaves); | |
8612 | for (const auto& leaf : leaves) { | |
8613 | CDir *dir = srci->get_dirfrag(leaf); | |
7c673cae | 8614 | if (!dir) { |
11fdf7f2 TL |
8615 | dout(10) << " opening " << leaf << " under " << *srci << dendl; |
8616 | mdcache->open_remote_dirfrag(srci, leaf, new C_MDS_RetryRequest(mdcache, mdr)); | |
7c673cae FG |
8617 | return; |
8618 | } | |
8619 | } | |
8620 | } | |
8621 | ||
11fdf7f2 TL |
8622 | // -- prepare snaprealm --- |
8623 | ||
8624 | if (linkmerge) { | |
8625 | if (!mdr->more()->srci_srnode && | |
8626 | srci->get_projected_inode()->nlink == 1 && | |
8627 | srci->is_projected_snaprealm_global()) { | |
8628 | sr_t *new_srnode = srci->prepare_new_srnode(0); | |
adb31ebb | 8629 | srci->record_snaprealm_parent_dentry(new_srnode, nullptr, destdn, false); |
11fdf7f2 TL |
8630 | |
8631 | srci->clear_snaprealm_global(new_srnode); | |
8632 | mdr->more()->srci_srnode = new_srnode; | |
8633 | } | |
8634 | } else { | |
8635 | if (oldin && !mdr->more()->desti_srnode) { | |
8636 | if (oldin->is_projected_snaprealm_global()) { | |
8637 | sr_t *new_srnode = oldin->prepare_new_srnode(0); | |
adb31ebb | 8638 | oldin->record_snaprealm_parent_dentry(new_srnode, dest_realm, destdn, destdnl->is_primary()); |
11fdf7f2 TL |
8639 | // dropping the last linkage or dropping the last remote linkage, |
8640 | // detch the inode from global snaprealm | |
8641 | auto nlink = oldin->get_projected_inode()->nlink; | |
8642 | if (nlink == 1 || | |
8643 | (nlink == 2 && !destdnl->is_primary() && | |
8644 | !oldin->get_projected_parent_dir()->inode->is_stray())) | |
8645 | oldin->clear_snaprealm_global(new_srnode); | |
8646 | mdr->more()->desti_srnode = new_srnode; | |
8647 | } else if (destdnl->is_primary()) { | |
11fdf7f2 TL |
8648 | snapid_t follows = dest_realm->get_newest_seq(); |
8649 | if (oldin->snaprealm || follows + 1 > oldin->get_oldest_snap()) { | |
8650 | sr_t *new_srnode = oldin->prepare_new_srnode(follows); | |
8651 | oldin->record_snaprealm_past_parent(new_srnode, straydn->get_dir()->inode->find_snaprealm()); | |
8652 | mdr->more()->desti_srnode = new_srnode; | |
8653 | } | |
8654 | } | |
8655 | } | |
8656 | if (!mdr->more()->srci_srnode) { | |
11fdf7f2 TL |
8657 | if (srci->is_projected_snaprealm_global()) { |
8658 | sr_t *new_srnode = srci->prepare_new_srnode(0); | |
adb31ebb | 8659 | srci->record_snaprealm_parent_dentry(new_srnode, src_realm, srcdn, srcdnl->is_primary()); |
11fdf7f2 TL |
8660 | mdr->more()->srci_srnode = new_srnode; |
8661 | } else if (srcdnl->is_primary()) { | |
11fdf7f2 TL |
8662 | snapid_t follows = src_realm->get_newest_seq(); |
8663 | if (src_realm != dest_realm && | |
8664 | (srci->snaprealm || follows + 1 > srci->get_oldest_snap())) { | |
8665 | sr_t *new_srnode = srci->prepare_new_srnode(follows); | |
8666 | srci->record_snaprealm_past_parent(new_srnode, dest_realm); | |
8667 | mdr->more()->srci_srnode = new_srnode; | |
8668 | } | |
8669 | } | |
8670 | } | |
8671 | } | |
8672 | ||
7c673cae FG |
8673 | // -- prepare witnesses -- |
8674 | ||
9f95a23c TL |
8675 | /* |
8676 | * NOTE: we use _all_ replicas as witnesses. | |
8677 | * this probably isn't totally necessary (esp for file renames), | |
8678 | * but if/when we change that, we have to make sure rejoin is | |
8679 | * sufficiently robust to handle strong rejoins from survivors | |
8680 | * with totally wrong dentry->inode linkage. | |
8681 | * (currently, it can ignore rename effects, because the resolve | |
8682 | * stage will sort them out.) | |
8683 | */ | |
8684 | set<mds_rank_t> witnesses = mdr->more()->extra_witnesses; | |
8685 | if (srcdn->is_auth()) | |
8686 | srcdn->list_replicas(witnesses); | |
8687 | else | |
8688 | witnesses.insert(srcdn->authority().first); | |
8689 | if (srcdnl->is_remote() && !srci->is_auth()) | |
8690 | witnesses.insert(srci->authority().first); | |
8691 | destdn->list_replicas(witnesses); | |
8692 | if (destdnl->is_remote() && !oldin->is_auth()) | |
8693 | witnesses.insert(oldin->authority().first); | |
8694 | dout(10) << " witnesses " << witnesses << ", have " << mdr->more()->witnessed << dendl; | |
8695 | ||
8696 | if (!witnesses.empty()) { | |
8697 | // Replicas can't see projected dentry linkages and will get confused. | |
8698 | // We have taken snaplocks on ancestor inodes. Later rename/rmdir requests | |
8699 | // can't project these inodes' linkages. | |
8700 | bool need_flush = false; | |
8701 | for (auto& dn : srctrace) { | |
8702 | if (dn->is_projected()) { | |
8703 | need_flush = true; | |
8704 | break; | |
8705 | } | |
8706 | } | |
8707 | if (!need_flush) { | |
8708 | CDentry *dn = destdn; | |
8709 | do { | |
8710 | if (dn->is_projected()) { | |
8711 | need_flush = true; | |
8712 | break; | |
8713 | } | |
8714 | CInode *diri = dn->get_dir()->get_inode(); | |
8715 | dn = diri->get_projected_parent_dn(); | |
8716 | } while (dn); | |
8717 | } | |
8718 | if (need_flush) { | |
8719 | mdlog->wait_for_safe( | |
8720 | new MDSInternalContextWrapper(mds, | |
8721 | new C_MDS_RetryRequest(mdcache, mdr))); | |
8722 | mdlog->flush(); | |
8723 | return; | |
8724 | } | |
8725 | } | |
8726 | ||
7c673cae FG |
8727 | // do srcdn auth last |
8728 | mds_rank_t last = MDS_RANK_NONE; | |
8729 | if (!srcdn->is_auth()) { | |
8730 | last = srcdn->authority().first; | |
8731 | mdr->more()->srcdn_auth_mds = last; | |
8732 | // ask auth of srci to mark srci as ambiguous auth if more than two MDS | |
8733 | // are involved in the rename operation. | |
8734 | if (srcdnl->is_primary() && !mdr->more()->is_ambiguous_auth) { | |
8735 | dout(10) << " preparing ambiguous auth for srci" << dendl; | |
11fdf7f2 TL |
8736 | ceph_assert(mdr->more()->is_remote_frozen_authpin); |
8737 | ceph_assert(mdr->more()->rename_inode == srci); | |
7c673cae FG |
8738 | _rename_prepare_witness(mdr, last, witnesses, srctrace, desttrace, straydn); |
8739 | return; | |
8740 | } | |
8741 | } | |
8742 | ||
8743 | for (set<mds_rank_t>::iterator p = witnesses.begin(); | |
8744 | p != witnesses.end(); | |
8745 | ++p) { | |
8746 | if (*p == last) continue; // do it last! | |
8747 | if (mdr->more()->witnessed.count(*p)) { | |
8748 | dout(10) << " already witnessed by mds." << *p << dendl; | |
f67539c2 | 8749 | } else if (mdr->more()->waiting_on_peer.count(*p)) { |
7c673cae FG |
8750 | dout(10) << " already waiting on witness mds." << *p << dendl; |
8751 | } else { | |
8752 | if (!_rename_prepare_witness(mdr, *p, witnesses, srctrace, desttrace, straydn)) | |
8753 | return; | |
8754 | } | |
8755 | } | |
f67539c2 | 8756 | if (!mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
8757 | return; // we're waiting for a witness. |
8758 | ||
8759 | if (last != MDS_RANK_NONE && mdr->more()->witnessed.count(last) == 0) { | |
8760 | dout(10) << " preparing last witness (srcdn auth)" << dendl; | |
f67539c2 | 8761 | ceph_assert(mdr->more()->waiting_on_peer.count(last) == 0); |
7c673cae FG |
8762 | _rename_prepare_witness(mdr, last, witnesses, srctrace, desttrace, straydn); |
8763 | return; | |
8764 | } | |
8765 | ||
f67539c2 TL |
8766 | // test hack: bail after peer does prepare, so we can verify it's _live_ rollback. |
8767 | if (!mdr->more()->peers.empty() && !srci->is_dir()) | |
11fdf7f2 | 8768 | ceph_assert(g_conf()->mds_kill_rename_at != 3); |
f67539c2 | 8769 | if (!mdr->more()->peers.empty() && srci->is_dir()) |
11fdf7f2 | 8770 | ceph_assert(g_conf()->mds_kill_rename_at != 4); |
7c673cae FG |
8771 | |
8772 | // -- declare now -- | |
8773 | mdr->set_mds_stamp(ceph_clock_now()); | |
8774 | ||
8775 | // -- prepare journal entry -- | |
8776 | mdr->ls = mdlog->get_current_segment(); | |
8777 | EUpdate *le = new EUpdate(mdlog, "rename"); | |
8778 | mdlog->start_entry(le); | |
f67539c2 | 8779 | le->metablob.add_client_req(mdr->reqid, req->get_oldest_client_tid()); |
7c673cae | 8780 | if (!mdr->more()->witnessed.empty()) { |
f67539c2 | 8781 | dout(20) << " noting uncommitted_peers " << mdr->more()->witnessed << dendl; |
7c673cae FG |
8782 | |
8783 | le->reqid = mdr->reqid; | |
f67539c2 | 8784 | le->had_peers = true; |
7c673cae | 8785 | |
f67539c2 | 8786 | mdcache->add_uncommitted_leader(mdr->reqid, mdr->ls, mdr->more()->witnessed); |
7c673cae FG |
8787 | // no need to send frozen auth pin to recovring auth MDS of srci |
8788 | mdr->more()->is_remote_frozen_authpin = false; | |
8789 | } | |
8790 | ||
f67539c2 | 8791 | _rename_prepare(mdr, &le->metablob, &le->client_map, srcdn, destdn, req->get_alternate_name(), straydn); |
7c673cae FG |
8792 | if (le->client_map.length()) |
8793 | le->cmapv = mds->sessionmap.get_projected(); | |
8794 | ||
8795 | // -- commit locally -- | |
8796 | C_MDS_rename_finish *fin = new C_MDS_rename_finish(this, mdr, srcdn, destdn, straydn); | |
8797 | ||
8798 | journal_and_reply(mdr, srci, destdn, le, fin); | |
81eedcae | 8799 | mds->balancer->maybe_fragment(destdn->get_dir(), false); |
7c673cae FG |
8800 | } |
8801 | ||
8802 | ||
8803 | void Server::_rename_finish(MDRequestRef& mdr, CDentry *srcdn, CDentry *destdn, CDentry *straydn) | |
8804 | { | |
8805 | dout(10) << "_rename_finish " << *mdr << dendl; | |
8806 | ||
8807 | if (!mdr->more()->witnessed.empty()) | |
f67539c2 | 8808 | mdcache->logged_leader_update(mdr->reqid); |
7c673cae FG |
8809 | |
8810 | // apply | |
8811 | _rename_apply(mdr, srcdn, destdn, straydn); | |
8812 | ||
8813 | mdcache->send_dentry_link(destdn, mdr); | |
8814 | ||
8815 | CDentry::linkage_t *destdnl = destdn->get_linkage(); | |
8816 | CInode *in = destdnl->get_inode(); | |
8817 | bool need_eval = mdr->more()->cap_imports.count(in); | |
8818 | ||
f67539c2 TL |
8819 | // test hack: test peer commit |
8820 | if (!mdr->more()->peers.empty() && !in->is_dir()) | |
11fdf7f2 | 8821 | ceph_assert(g_conf()->mds_kill_rename_at != 5); |
f67539c2 | 8822 | if (!mdr->more()->peers.empty() && in->is_dir()) |
11fdf7f2 | 8823 | ceph_assert(g_conf()->mds_kill_rename_at != 6); |
7c673cae FG |
8824 | |
8825 | // bump popularity | |
11fdf7f2 | 8826 | mds->balancer->hit_dir(srcdn->get_dir(), META_POP_IWR); |
7c673cae | 8827 | if (destdnl->is_remote() && in->is_auth()) |
11fdf7f2 | 8828 | mds->balancer->hit_inode(in, META_POP_IWR); |
7c673cae FG |
8829 | |
8830 | // did we import srci? if so, explicitly ack that import that, before we unlock and reply. | |
8831 | ||
11fdf7f2 | 8832 | ceph_assert(g_conf()->mds_kill_rename_at != 7); |
7c673cae FG |
8833 | |
8834 | // reply | |
8835 | respond_to_request(mdr, 0); | |
8836 | ||
8837 | if (need_eval) | |
8838 | mds->locker->eval(in, CEPH_CAP_LOCKS, true); | |
8839 | ||
8840 | // clean up? | |
8841 | // respond_to_request() drops locks. So stray reintegration can race with us. | |
8842 | if (straydn && !straydn->get_projected_linkage()->is_null()) { | |
8843 | mdcache->notify_stray(straydn); | |
8844 | } | |
8845 | } | |
8846 | ||
8847 | ||
8848 | ||
8849 | // helpers | |
8850 | ||
8851 | bool Server::_rename_prepare_witness(MDRequestRef& mdr, mds_rank_t who, set<mds_rank_t> &witnesse, | |
8852 | vector<CDentry*>& srctrace, vector<CDentry*>& dsttrace, CDentry *straydn) | |
8853 | { | |
f67539c2 TL |
8854 | const auto& client_req = mdr->client_request; |
8855 | ceph_assert(client_req); | |
8856 | ||
7c673cae FG |
8857 | if (mds->is_cluster_degraded() && |
8858 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(who)) { | |
8859 | dout(10) << "_rename_prepare_witness mds." << who << " is not active" << dendl; | |
f67539c2 | 8860 | if (mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
8861 | mds->wait_for_active_peer(who, new C_MDS_RetryRequest(mdcache, mdr)); |
8862 | return false; | |
8863 | } | |
8864 | ||
8865 | dout(10) << "_rename_prepare_witness mds." << who << dendl; | |
f67539c2 | 8866 | auto req = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_RENAMEPREP); |
7c673cae FG |
8867 | |
8868 | req->srcdnpath = filepath(srctrace.front()->get_dir()->ino()); | |
8869 | for (auto dn : srctrace) | |
94b18763 | 8870 | req->srcdnpath.push_dentry(dn->get_name()); |
7c673cae FG |
8871 | req->destdnpath = filepath(dsttrace.front()->get_dir()->ino()); |
8872 | for (auto dn : dsttrace) | |
94b18763 | 8873 | req->destdnpath.push_dentry(dn->get_name()); |
f67539c2 | 8874 | req->alternate_name = client_req->alternate_name; |
7c673cae | 8875 | if (straydn) |
9f95a23c | 8876 | mdcache->encode_replica_stray(straydn, who, req->straybl); |
11fdf7f2 TL |
8877 | |
8878 | if (mdr->more()->srci_srnode) | |
8879 | encode(*mdr->more()->srci_srnode, req->srci_snapbl); | |
8880 | if (mdr->more()->desti_srnode) | |
8881 | encode(*mdr->more()->desti_srnode, req->desti_snapbl); | |
31f18b77 FG |
8882 | |
8883 | req->srcdn_auth = mdr->more()->srcdn_auth_mds; | |
7c673cae FG |
8884 | |
8885 | // srcdn auth will verify our current witness list is sufficient | |
8886 | req->witnesses = witnesse; | |
8887 | ||
8888 | req->op_stamp = mdr->get_op_stamp(); | |
8889 | mds->send_message_mds(req, who); | |
8890 | ||
f67539c2 TL |
8891 | ceph_assert(mdr->more()->waiting_on_peer.count(who) == 0); |
8892 | mdr->more()->waiting_on_peer.insert(who); | |
7c673cae FG |
8893 | return true; |
8894 | } | |
8895 | ||
8896 | version_t Server::_rename_prepare_import(MDRequestRef& mdr, CDentry *srcdn, bufferlist *client_map_bl) | |
8897 | { | |
8898 | version_t oldpv = mdr->more()->inode_import_v; | |
8899 | ||
8900 | CDentry::linkage_t *srcdnl = srcdn->get_linkage(); | |
8901 | ||
8902 | /* import node */ | |
11fdf7f2 | 8903 | auto blp = mdr->more()->inode_import.cbegin(); |
7c673cae FG |
8904 | |
8905 | // imported caps | |
28e407b8 | 8906 | map<client_t,entity_inst_t> client_map; |
11fdf7f2 | 8907 | map<client_t, client_metadata_t> client_metadata_map; |
28e407b8 | 8908 | decode(client_map, blp); |
11fdf7f2 TL |
8909 | decode(client_metadata_map, blp); |
8910 | prepare_force_open_sessions(client_map, client_metadata_map, | |
8911 | mdr->more()->imported_session_map); | |
28e407b8 | 8912 | encode(client_map, *client_map_bl, mds->mdsmap->get_up_features()); |
11fdf7f2 | 8913 | encode(client_metadata_map, *client_map_bl); |
7c673cae FG |
8914 | |
8915 | list<ScatterLock*> updated_scatterlocks; | |
8916 | mdcache->migrator->decode_import_inode(srcdn, blp, srcdn->authority().first, mdr->ls, | |
8917 | mdr->more()->cap_imports, updated_scatterlocks); | |
8918 | ||
8919 | // hack: force back to !auth and clean, temporarily | |
8920 | srcdnl->get_inode()->state_clear(CInode::STATE_AUTH); | |
8921 | srcdnl->get_inode()->mark_clean(); | |
8922 | ||
8923 | return oldpv; | |
8924 | } | |
8925 | ||
8926 | bool Server::_need_force_journal(CInode *diri, bool empty) | |
8927 | { | |
9f95a23c | 8928 | auto&& dirs = diri->get_dirfrags(); |
7c673cae FG |
8929 | |
8930 | bool force_journal = false; | |
8931 | if (empty) { | |
11fdf7f2 TL |
8932 | for (const auto& dir : dirs) { |
8933 | if (dir->is_subtree_root() && dir->get_dir_auth().first == mds->get_nodeid()) { | |
8934 | dout(10) << " frag " << dir->get_frag() << " is auth subtree dirfrag, will force journal" << dendl; | |
7c673cae FG |
8935 | force_journal = true; |
8936 | break; | |
8937 | } else | |
11fdf7f2 | 8938 | dout(20) << " frag " << dir->get_frag() << " is not auth subtree dirfrag" << dendl; |
7c673cae FG |
8939 | } |
8940 | } else { | |
8941 | // see if any children of our frags are auth subtrees. | |
11fdf7f2 TL |
8942 | std::vector<CDir*> subtrees; |
8943 | mdcache->get_subtrees(subtrees); | |
8944 | dout(10) << " subtrees " << subtrees << " frags " << dirs << dendl; | |
8945 | for (const auto& dir : dirs) { | |
8946 | for (const auto& subtree : subtrees) { | |
8947 | if (dir->contains(subtree)) { | |
8948 | if (subtree->get_dir_auth().first == mds->get_nodeid()) { | |
8949 | dout(10) << " frag " << dir->get_frag() << " contains (maybe) auth subtree, will force journal " | |
8950 | << *subtree << dendl; | |
7c673cae FG |
8951 | force_journal = true; |
8952 | break; | |
8953 | } else | |
11fdf7f2 | 8954 | dout(20) << " frag " << dir->get_frag() << " contains but isn't auth for " << *subtree << dendl; |
7c673cae | 8955 | } else |
11fdf7f2 | 8956 | dout(20) << " frag " << dir->get_frag() << " does not contain " << *subtree << dendl; |
7c673cae FG |
8957 | } |
8958 | if (force_journal) | |
8959 | break; | |
8960 | } | |
8961 | } | |
8962 | return force_journal; | |
8963 | } | |
8964 | ||
8965 | void Server::_rename_prepare(MDRequestRef& mdr, | |
8966 | EMetaBlob *metablob, bufferlist *client_map_bl, | |
f67539c2 TL |
8967 | CDentry *srcdn, CDentry *destdn, std::string_view alternate_name, |
8968 | CDentry *straydn) | |
7c673cae FG |
8969 | { |
8970 | dout(10) << "_rename_prepare " << *mdr << " " << *srcdn << " " << *destdn << dendl; | |
8971 | if (straydn) | |
8972 | dout(10) << " straydn " << *straydn << dendl; | |
8973 | ||
8974 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); | |
8975 | CDentry::linkage_t *destdnl = destdn->get_projected_linkage(); | |
8976 | CInode *srci = srcdnl->get_inode(); | |
8977 | CInode *oldin = destdnl->get_inode(); | |
8978 | ||
8979 | // primary+remote link merge? | |
11fdf7f2 TL |
8980 | bool linkmerge = (srci == oldin); |
8981 | if (linkmerge) | |
8982 | ceph_assert(srcdnl->is_primary() && destdnl->is_remote()); | |
7c673cae FG |
8983 | bool silent = srcdn->get_dir()->inode->is_stray(); |
8984 | ||
8985 | bool force_journal_dest = false; | |
8986 | if (srci->is_dir() && !destdn->is_auth()) { | |
8987 | if (srci->is_auth()) { | |
8988 | // if we are auth for srci and exporting it, force journal because journal replay needs | |
8989 | // the source inode to create auth subtrees. | |
8990 | dout(10) << " we are exporting srci, will force journal destdn" << dendl; | |
8991 | force_journal_dest = true; | |
8992 | } else | |
8993 | force_journal_dest = _need_force_journal(srci, false); | |
8994 | } | |
8995 | ||
8996 | bool force_journal_stray = false; | |
8997 | if (oldin && oldin->is_dir() && straydn && !straydn->is_auth()) | |
8998 | force_journal_stray = _need_force_journal(oldin, true); | |
8999 | ||
9000 | if (linkmerge) | |
9001 | dout(10) << " merging remote and primary links to the same inode" << dendl; | |
9002 | if (silent) | |
9003 | dout(10) << " reintegrating stray; will avoid changing nlink or dir mtime" << dendl; | |
9004 | if (force_journal_dest) | |
9005 | dout(10) << " forcing journal destdn because we (will) have auth subtrees nested beneath it" << dendl; | |
9006 | if (force_journal_stray) | |
9007 | dout(10) << " forcing journal straydn because we (will) have auth subtrees nested beneath it" << dendl; | |
9008 | ||
9009 | if (srci->is_dir() && (destdn->is_auth() || force_journal_dest)) { | |
9010 | dout(10) << " noting renamed dir ino " << srci->ino() << " in metablob" << dendl; | |
9011 | metablob->renamed_dirino = srci->ino(); | |
9012 | } else if (oldin && oldin->is_dir() && force_journal_stray) { | |
9013 | dout(10) << " noting rename target dir " << oldin->ino() << " in metablob" << dendl; | |
9014 | metablob->renamed_dirino = oldin->ino(); | |
9015 | } | |
9016 | ||
9017 | // prepare | |
94b18763 FG |
9018 | CInode::mempool_inode *spi = 0; // renamed inode |
9019 | CInode::mempool_inode *tpi = 0; // target/overwritten inode | |
7c673cae FG |
9020 | |
9021 | // target inode | |
9022 | if (!linkmerge) { | |
9023 | if (destdnl->is_primary()) { | |
11fdf7f2 | 9024 | ceph_assert(straydn); // moving to straydn. |
7c673cae FG |
9025 | // link--, and move. |
9026 | if (destdn->is_auth()) { | |
f67539c2 TL |
9027 | auto pi= oldin->project_inode(mdr); //project_snaprealm |
9028 | pi.inode->version = straydn->pre_dirty(pi.inode->version); | |
9029 | pi.inode->update_backtrace(); | |
9030 | tpi = pi.inode.get(); | |
7c673cae FG |
9031 | } |
9032 | straydn->push_projected_linkage(oldin); | |
9033 | } else if (destdnl->is_remote()) { | |
9034 | // nlink-- targeti | |
9035 | if (oldin->is_auth()) { | |
f67539c2 TL |
9036 | auto pi = oldin->project_inode(mdr); |
9037 | pi.inode->version = oldin->pre_dirty(); | |
9038 | tpi = pi.inode.get(); | |
7c673cae FG |
9039 | } |
9040 | } | |
9041 | } | |
9042 | ||
9043 | // dest | |
f67539c2 TL |
9044 | if (destdnl->is_null()) { |
9045 | /* handle_client_rename checks that alternate_name matches for existing destdn */ | |
9046 | destdn->set_alternate_name(alternate_name); | |
9047 | } | |
7c673cae FG |
9048 | if (srcdnl->is_remote()) { |
9049 | if (!linkmerge) { | |
9050 | // destdn | |
9051 | if (destdn->is_auth()) | |
9052 | mdr->more()->pvmap[destdn] = destdn->pre_dirty(); | |
9053 | destdn->push_projected_linkage(srcdnl->get_remote_ino(), srcdnl->get_remote_d_type()); | |
9054 | // srci | |
9055 | if (srci->is_auth()) { | |
f67539c2 TL |
9056 | auto pi = srci->project_inode(mdr); |
9057 | pi.inode->version = srci->pre_dirty(); | |
9058 | spi = pi.inode.get(); | |
7c673cae FG |
9059 | } |
9060 | } else { | |
9061 | dout(10) << " will merge remote onto primary link" << dendl; | |
9062 | if (destdn->is_auth()) { | |
f67539c2 TL |
9063 | auto pi = oldin->project_inode(mdr); |
9064 | pi.inode->version = mdr->more()->pvmap[destdn] = destdn->pre_dirty(oldin->get_version()); | |
9065 | spi = pi.inode.get(); | |
7c673cae FG |
9066 | } |
9067 | } | |
9068 | } else { // primary | |
9069 | if (destdn->is_auth()) { | |
9070 | version_t oldpv; | |
9071 | if (srcdn->is_auth()) | |
9072 | oldpv = srci->get_projected_version(); | |
9073 | else { | |
9074 | oldpv = _rename_prepare_import(mdr, srcdn, client_map_bl); | |
9075 | ||
9076 | // note which dirfrags have child subtrees in the journal | |
9077 | // event, so that we can open those (as bounds) during replay. | |
9078 | if (srci->is_dir()) { | |
9f95a23c TL |
9079 | auto&& ls = srci->get_dirfrags(); |
9080 | for (const auto& dir : ls) { | |
7c673cae FG |
9081 | if (!dir->is_auth()) |
9082 | metablob->renamed_dir_frags.push_back(dir->get_frag()); | |
9083 | } | |
9084 | dout(10) << " noting renamed dir open frags " << metablob->renamed_dir_frags << dendl; | |
9085 | } | |
9086 | } | |
f67539c2 | 9087 | auto pi = srci->project_inode(mdr); // project snaprealm if srcdnl->is_primary |
7c673cae | 9088 | // & srcdnl->snaprealm |
f67539c2 TL |
9089 | pi.inode->version = mdr->more()->pvmap[destdn] = destdn->pre_dirty(oldpv); |
9090 | pi.inode->update_backtrace(); | |
9091 | spi = pi.inode.get(); | |
7c673cae FG |
9092 | } |
9093 | destdn->push_projected_linkage(srci); | |
9094 | } | |
9095 | ||
9096 | // src | |
9097 | if (srcdn->is_auth()) | |
9098 | mdr->more()->pvmap[srcdn] = srcdn->pre_dirty(); | |
9099 | srcdn->push_projected_linkage(); // push null linkage | |
9100 | ||
9101 | if (!silent) { | |
94b18763 | 9102 | if (spi) { |
91327a77 AA |
9103 | spi->ctime = mdr->get_op_stamp(); |
9104 | if (mdr->get_op_stamp() > spi->rstat.rctime) | |
9105 | spi->rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 9106 | spi->change_attr++; |
7c673cae | 9107 | if (linkmerge) |
94b18763 | 9108 | spi->nlink--; |
7c673cae FG |
9109 | } |
9110 | if (tpi) { | |
91327a77 AA |
9111 | tpi->ctime = mdr->get_op_stamp(); |
9112 | if (mdr->get_op_stamp() > tpi->rstat.rctime) | |
9113 | tpi->rstat.rctime = mdr->get_op_stamp(); | |
7c673cae | 9114 | tpi->change_attr++; |
94b18763 FG |
9115 | { |
9116 | std::string t; | |
9117 | destdn->make_path_string(t, true); | |
11fdf7f2 | 9118 | tpi->stray_prior_path = std::move(t); |
94b18763 | 9119 | } |
7c673cae FG |
9120 | tpi->nlink--; |
9121 | if (tpi->nlink == 0) | |
9122 | oldin->state_set(CInode::STATE_ORPHAN); | |
9123 | } | |
9124 | } | |
9125 | ||
9126 | // prepare nesting, mtime updates | |
9127 | int predirty_dir = silent ? 0:PREDIRTY_DIR; | |
9128 | ||
9129 | // guarantee stray dir is processed first during journal replay. unlink the old inode, | |
9130 | // then link the source inode to destdn | |
9131 | if (destdnl->is_primary()) { | |
11fdf7f2 | 9132 | ceph_assert(straydn); |
7c673cae FG |
9133 | if (straydn->is_auth()) { |
9134 | metablob->add_dir_context(straydn->get_dir()); | |
9135 | metablob->add_dir(straydn->get_dir(), true); | |
9136 | } | |
9137 | } | |
9138 | ||
f67539c2 TL |
9139 | if (!linkmerge && destdnl->is_remote() && oldin->is_auth()) { |
9140 | CDir *oldin_dir = oldin->get_projected_parent_dir(); | |
9141 | if (oldin_dir != srcdn->get_dir() && oldin_dir != destdn->get_dir()) | |
9142 | mdcache->predirty_journal_parents(mdr, metablob, oldin, oldin_dir, PREDIRTY_PRIMARY); | |
9143 | } | |
9144 | ||
7c673cae FG |
9145 | // sub off target |
9146 | if (destdn->is_auth() && !destdnl->is_null()) { | |
9147 | mdcache->predirty_journal_parents(mdr, metablob, oldin, destdn->get_dir(), | |
9148 | (destdnl->is_primary() ? PREDIRTY_PRIMARY:0)|predirty_dir, -1); | |
224ce89b | 9149 | if (destdnl->is_primary()) { |
11fdf7f2 | 9150 | ceph_assert(straydn); |
7c673cae FG |
9151 | mdcache->predirty_journal_parents(mdr, metablob, oldin, straydn->get_dir(), |
9152 | PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
224ce89b | 9153 | } |
7c673cae | 9154 | } |
f67539c2 TL |
9155 | |
9156 | if (srcdnl->is_remote() && srci->is_auth()) { | |
9157 | CDir *srci_dir = srci->get_projected_parent_dir(); | |
9158 | if (srci_dir != srcdn->get_dir() && srci_dir != destdn->get_dir()) | |
9159 | mdcache->predirty_journal_parents(mdr, metablob, srci, srci_dir, PREDIRTY_PRIMARY); | |
9160 | } | |
7c673cae FG |
9161 | |
9162 | // move srcdn | |
9163 | int predirty_primary = (srcdnl->is_primary() && srcdn->get_dir() != destdn->get_dir()) ? PREDIRTY_PRIMARY:0; | |
9164 | int flags = predirty_dir | predirty_primary; | |
9165 | if (srcdn->is_auth()) | |
9166 | mdcache->predirty_journal_parents(mdr, metablob, srci, srcdn->get_dir(), PREDIRTY_SHALLOW|flags, -1); | |
9167 | if (destdn->is_auth()) | |
9168 | mdcache->predirty_journal_parents(mdr, metablob, srci, destdn->get_dir(), flags, 1); | |
9169 | ||
7c673cae FG |
9170 | // add it all to the metablob |
9171 | // target inode | |
9172 | if (!linkmerge) { | |
9173 | if (destdnl->is_primary()) { | |
11fdf7f2 | 9174 | ceph_assert(straydn); |
7c673cae FG |
9175 | if (destdn->is_auth()) { |
9176 | // project snaprealm, too | |
11fdf7f2 TL |
9177 | if (auto& desti_srnode = mdr->more()->desti_srnode) { |
9178 | oldin->project_snaprealm(desti_srnode); | |
9179 | if (tpi->nlink == 0) | |
9180 | ceph_assert(!desti_srnode->is_parent_global()); | |
9181 | desti_srnode = NULL; | |
9182 | } | |
9183 | straydn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7c673cae FG |
9184 | metablob->add_primary_dentry(straydn, oldin, true, true); |
9185 | } else if (force_journal_stray) { | |
9186 | dout(10) << " forced journaling straydn " << *straydn << dendl; | |
9187 | metablob->add_dir_context(straydn->get_dir()); | |
9188 | metablob->add_primary_dentry(straydn, oldin, true); | |
9189 | } | |
9190 | } else if (destdnl->is_remote()) { | |
9191 | if (oldin->is_auth()) { | |
11fdf7f2 | 9192 | sr_t *new_srnode = NULL; |
f67539c2 TL |
9193 | if (mdr->peer_request) { |
9194 | if (mdr->peer_request->desti_snapbl.length() > 0) { | |
11fdf7f2 | 9195 | new_srnode = new sr_t(); |
f67539c2 | 9196 | auto p = mdr->peer_request->desti_snapbl.cbegin(); |
11fdf7f2 TL |
9197 | decode(*new_srnode, p); |
9198 | } | |
9199 | } else if (auto& desti_srnode = mdr->more()->desti_srnode) { | |
9200 | new_srnode = desti_srnode; | |
9201 | desti_srnode = NULL; | |
9202 | } | |
9203 | if (new_srnode) { | |
9204 | oldin->project_snaprealm(new_srnode); | |
9205 | if (tpi->nlink == 0) | |
9206 | ceph_assert(!new_srnode->is_parent_global()); | |
9207 | } | |
7c673cae | 9208 | // auth for targeti |
f67539c2 TL |
9209 | CDentry *oldin_pdn = oldin->get_projected_parent_dn(); |
9210 | mdcache->journal_cow_dentry(mdr.get(), metablob, oldin_pdn); | |
9211 | metablob->add_primary_dentry(oldin_pdn, oldin, true); | |
7c673cae FG |
9212 | } |
9213 | } | |
9214 | } | |
9215 | ||
9216 | // dest | |
9217 | if (srcdnl->is_remote()) { | |
11fdf7f2 TL |
9218 | ceph_assert(!linkmerge); |
9219 | if (destdn->is_auth() && !destdnl->is_null()) | |
9220 | mdcache->journal_cow_dentry(mdr.get(), metablob, destdn, CEPH_NOSNAP, 0, destdnl); | |
9221 | else | |
9222 | destdn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7c673cae | 9223 | |
11fdf7f2 TL |
9224 | if (destdn->is_auth()) |
9225 | metablob->add_remote_dentry(destdn, true, srcdnl->get_remote_ino(), srcdnl->get_remote_d_type()); | |
9226 | ||
9227 | if (srci->is_auth() ) { // it's remote | |
f67539c2 TL |
9228 | if (mdr->peer_request) { |
9229 | if (mdr->peer_request->srci_snapbl.length() > 0) { | |
11fdf7f2 | 9230 | sr_t *new_srnode = new sr_t(); |
f67539c2 | 9231 | auto p = mdr->peer_request->srci_snapbl.cbegin(); |
11fdf7f2 TL |
9232 | decode(*new_srnode, p); |
9233 | srci->project_snaprealm(new_srnode); | |
9234 | } | |
9235 | } else if (auto& srci_srnode = mdr->more()->srci_srnode) { | |
9236 | srci->project_snaprealm(srci_srnode); | |
9237 | srci_srnode = NULL; | |
7c673cae | 9238 | } |
7c673cae | 9239 | |
11fdf7f2 | 9240 | CDentry *srci_pdn = srci->get_projected_parent_dn(); |
f67539c2 | 9241 | mdcache->journal_cow_dentry(mdr.get(), metablob, srci_pdn); |
11fdf7f2 | 9242 | metablob->add_primary_dentry(srci_pdn, srci, true); |
7c673cae FG |
9243 | } |
9244 | } else if (srcdnl->is_primary()) { | |
9245 | // project snap parent update? | |
11fdf7f2 TL |
9246 | if (destdn->is_auth()) { |
9247 | if (auto& srci_srnode = mdr->more()->srci_srnode) { | |
9248 | srci->project_snaprealm(srci_srnode); | |
9249 | srci_srnode = NULL; | |
9250 | } | |
9251 | } | |
7c673cae FG |
9252 | |
9253 | if (destdn->is_auth() && !destdnl->is_null()) | |
9254 | mdcache->journal_cow_dentry(mdr.get(), metablob, destdn, CEPH_NOSNAP, 0, destdnl); | |
11fdf7f2 TL |
9255 | |
9256 | destdn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7c673cae FG |
9257 | |
9258 | if (destdn->is_auth()) | |
9259 | metablob->add_primary_dentry(destdn, srci, true, true); | |
9260 | else if (force_journal_dest) { | |
9261 | dout(10) << " forced journaling destdn " << *destdn << dendl; | |
9262 | metablob->add_dir_context(destdn->get_dir()); | |
9263 | metablob->add_primary_dentry(destdn, srci, true); | |
9264 | if (srcdn->is_auth() && srci->is_dir()) { | |
9265 | // journal new subtrees root dirfrags | |
9f95a23c TL |
9266 | auto&& ls = srci->get_dirfrags(); |
9267 | for (const auto& dir : ls) { | |
7c673cae FG |
9268 | if (dir->is_auth()) |
9269 | metablob->add_dir(dir, true); | |
9270 | } | |
9271 | } | |
9272 | } | |
9273 | } | |
9274 | ||
9275 | // src | |
9276 | if (srcdn->is_auth()) { | |
9277 | dout(10) << " journaling srcdn " << *srcdn << dendl; | |
9278 | mdcache->journal_cow_dentry(mdr.get(), metablob, srcdn, CEPH_NOSNAP, 0, srcdnl); | |
f67539c2 | 9279 | // also journal the inode in case we need do peer rename rollback. It is Ok to add |
7c673cae FG |
9280 | // both primary and NULL dentries. Because during journal replay, null dentry is |
9281 | // processed after primary dentry. | |
9282 | if (srcdnl->is_primary() && !srci->is_dir() && !destdn->is_auth()) | |
9283 | metablob->add_primary_dentry(srcdn, srci, true); | |
9284 | metablob->add_null_dentry(srcdn, true); | |
9285 | } else | |
9286 | dout(10) << " NOT journaling srcdn " << *srcdn << dendl; | |
9287 | ||
9288 | // make renamed inode first track the dn | |
11fdf7f2 TL |
9289 | if (srcdnl->is_primary() && destdn->is_auth()) { |
9290 | ceph_assert(srci->first <= destdn->first); | |
9291 | srci->first = destdn->first; | |
9292 | } | |
9293 | // make stray inode first track the straydn | |
9294 | if (straydn && straydn->is_auth()) { | |
9295 | ceph_assert(oldin->first <= straydn->first); | |
9296 | oldin->first = straydn->first; | |
9297 | } | |
7c673cae | 9298 | |
224ce89b | 9299 | if (oldin && oldin->is_dir()) { |
11fdf7f2 | 9300 | ceph_assert(straydn); |
7c673cae | 9301 | mdcache->project_subtree_rename(oldin, destdn->get_dir(), straydn->get_dir()); |
224ce89b | 9302 | } |
7c673cae FG |
9303 | if (srci->is_dir()) |
9304 | mdcache->project_subtree_rename(srci, srcdn->get_dir(), destdn->get_dir()); | |
9305 | ||
9306 | } | |
9307 | ||
9308 | ||
9309 | void Server::_rename_apply(MDRequestRef& mdr, CDentry *srcdn, CDentry *destdn, CDentry *straydn) | |
9310 | { | |
9311 | dout(10) << "_rename_apply " << *mdr << " " << *srcdn << " " << *destdn << dendl; | |
9312 | dout(10) << " pvs " << mdr->more()->pvmap << dendl; | |
9313 | ||
9314 | CDentry::linkage_t *srcdnl = srcdn->get_linkage(); | |
9315 | CDentry::linkage_t *destdnl = destdn->get_linkage(); | |
9316 | ||
9317 | CInode *oldin = destdnl->get_inode(); | |
7c673cae FG |
9318 | |
9319 | // primary+remote link merge? | |
11fdf7f2 TL |
9320 | bool linkmerge = (srcdnl->get_inode() == oldin); |
9321 | if (linkmerge) | |
9322 | ceph_assert(srcdnl->is_primary() || destdnl->is_remote()); | |
9323 | ||
9324 | bool new_in_snaprealm = false; | |
9325 | bool new_oldin_snaprealm = false; | |
7c673cae FG |
9326 | |
9327 | // target inode | |
9328 | if (!linkmerge) { | |
9329 | if (destdnl->is_primary()) { | |
11fdf7f2 | 9330 | ceph_assert(straydn); |
7c673cae | 9331 | dout(10) << "straydn is " << *straydn << dendl; |
11fdf7f2 TL |
9332 | |
9333 | // if there is newly created snaprealm, need to split old snaprealm's | |
9334 | // inodes_with_caps. So pop snaprealm before linkage changes. | |
9335 | if (destdn->is_auth()) { | |
9336 | bool hadrealm = (oldin->snaprealm ? true : false); | |
9337 | oldin->early_pop_projected_snaprealm(); | |
9338 | new_oldin_snaprealm = (oldin->snaprealm && !hadrealm); | |
9339 | } else { | |
f67539c2 TL |
9340 | ceph_assert(mdr->peer_request); |
9341 | if (mdr->peer_request->desti_snapbl.length()) { | |
11fdf7f2 | 9342 | new_oldin_snaprealm = !oldin->snaprealm; |
f67539c2 | 9343 | oldin->decode_snap_blob(mdr->peer_request->desti_snapbl); |
11fdf7f2 | 9344 | ceph_assert(oldin->snaprealm); |
11fdf7f2 TL |
9345 | } |
9346 | } | |
9347 | ||
31f18b77 | 9348 | destdn->get_dir()->unlink_inode(destdn, false); |
7c673cae FG |
9349 | |
9350 | straydn->pop_projected_linkage(); | |
f67539c2 | 9351 | if (mdr->is_peer() && !mdr->more()->peer_update_journaled) |
11fdf7f2 | 9352 | ceph_assert(!straydn->is_projected()); // no other projected |
7c673cae FG |
9353 | |
9354 | // nlink-- targeti | |
11fdf7f2 | 9355 | if (destdn->is_auth()) |
f67539c2 | 9356 | oldin->pop_and_dirty_projected_inode(mdr->ls, mdr); |
11fdf7f2 TL |
9357 | |
9358 | mdcache->touch_dentry_bottom(straydn); // drop dn as quickly as possible. | |
7c673cae | 9359 | } else if (destdnl->is_remote()) { |
31f18b77 | 9360 | destdn->get_dir()->unlink_inode(destdn, false); |
11fdf7f2 | 9361 | if (oldin->is_auth()) { |
f67539c2 TL |
9362 | oldin->pop_and_dirty_projected_inode(mdr->ls, mdr); |
9363 | } else if (mdr->peer_request) { | |
9364 | if (mdr->peer_request->desti_snapbl.length() > 0) { | |
11fdf7f2 | 9365 | ceph_assert(oldin->snaprealm); |
f67539c2 | 9366 | oldin->decode_snap_blob(mdr->peer_request->desti_snapbl); |
11fdf7f2 TL |
9367 | } |
9368 | } else if (auto& desti_srnode = mdr->more()->desti_srnode) { | |
9369 | delete desti_srnode; | |
9370 | desti_srnode = NULL; | |
9371 | } | |
7c673cae FG |
9372 | } |
9373 | } | |
9374 | ||
9375 | // unlink src before we relink it at dest | |
9376 | CInode *in = srcdnl->get_inode(); | |
11fdf7f2 | 9377 | ceph_assert(in); |
7c673cae FG |
9378 | |
9379 | bool srcdn_was_remote = srcdnl->is_remote(); | |
11fdf7f2 TL |
9380 | if (!srcdn_was_remote) { |
9381 | // if there is newly created snaprealm, need to split old snaprealm's | |
9382 | // inodes_with_caps. So pop snaprealm before linkage changes. | |
9383 | if (destdn->is_auth()) { | |
9384 | bool hadrealm = (in->snaprealm ? true : false); | |
9385 | in->early_pop_projected_snaprealm(); | |
9386 | new_in_snaprealm = (in->snaprealm && !hadrealm); | |
9387 | } else { | |
f67539c2 TL |
9388 | ceph_assert(mdr->peer_request); |
9389 | if (mdr->peer_request->srci_snapbl.length()) { | |
11fdf7f2 | 9390 | new_in_snaprealm = !in->snaprealm; |
f67539c2 | 9391 | in->decode_snap_blob(mdr->peer_request->srci_snapbl); |
11fdf7f2 | 9392 | ceph_assert(in->snaprealm); |
11fdf7f2 TL |
9393 | } |
9394 | } | |
9395 | } | |
9396 | ||
7c673cae FG |
9397 | srcdn->get_dir()->unlink_inode(srcdn); |
9398 | ||
9399 | // dest | |
9400 | if (srcdn_was_remote) { | |
9401 | if (!linkmerge) { | |
9402 | // destdn | |
9403 | destdnl = destdn->pop_projected_linkage(); | |
f67539c2 | 9404 | if (mdr->is_peer() && !mdr->more()->peer_update_journaled) |
11fdf7f2 | 9405 | ceph_assert(!destdn->is_projected()); // no other projected |
7c673cae FG |
9406 | |
9407 | destdn->link_remote(destdnl, in); | |
9408 | if (destdn->is_auth()) | |
9409 | destdn->mark_dirty(mdr->more()->pvmap[destdn], mdr->ls); | |
9410 | // in | |
11fdf7f2 | 9411 | if (in->is_auth()) { |
f67539c2 TL |
9412 | in->pop_and_dirty_projected_inode(mdr->ls, mdr); |
9413 | } else if (mdr->peer_request) { | |
9414 | if (mdr->peer_request->srci_snapbl.length() > 0) { | |
11fdf7f2 | 9415 | ceph_assert(in->snaprealm); |
f67539c2 | 9416 | in->decode_snap_blob(mdr->peer_request->srci_snapbl); |
11fdf7f2 TL |
9417 | } |
9418 | } else if (auto& srci_srnode = mdr->more()->srci_srnode) { | |
9419 | delete srci_srnode; | |
9420 | srci_srnode = NULL; | |
9421 | } | |
7c673cae FG |
9422 | } else { |
9423 | dout(10) << "merging remote onto primary link" << dendl; | |
f67539c2 | 9424 | oldin->pop_and_dirty_projected_inode(mdr->ls, mdr); |
7c673cae FG |
9425 | } |
9426 | } else { // primary | |
9427 | if (linkmerge) { | |
9428 | dout(10) << "merging primary onto remote link" << dendl; | |
31f18b77 | 9429 | destdn->get_dir()->unlink_inode(destdn, false); |
7c673cae FG |
9430 | } |
9431 | destdnl = destdn->pop_projected_linkage(); | |
f67539c2 | 9432 | if (mdr->is_peer() && !mdr->more()->peer_update_journaled) |
11fdf7f2 | 9433 | ceph_assert(!destdn->is_projected()); // no other projected |
7c673cae FG |
9434 | |
9435 | // srcdn inode import? | |
9436 | if (!srcdn->is_auth() && destdn->is_auth()) { | |
11fdf7f2 | 9437 | ceph_assert(mdr->more()->inode_import.length() > 0); |
7c673cae FG |
9438 | |
9439 | map<client_t,Capability::Import> imported_caps; | |
9440 | ||
9441 | // finish cap imports | |
28e407b8 | 9442 | finish_force_open_sessions(mdr->more()->imported_session_map); |
7c673cae FG |
9443 | if (mdr->more()->cap_imports.count(destdnl->get_inode())) { |
9444 | mdcache->migrator->finish_import_inode_caps(destdnl->get_inode(), | |
28e407b8 AA |
9445 | mdr->more()->srcdn_auth_mds, true, |
9446 | mdr->more()->imported_session_map, | |
9447 | mdr->more()->cap_imports[destdnl->get_inode()], | |
9448 | imported_caps); | |
7c673cae FG |
9449 | } |
9450 | ||
9451 | mdr->more()->inode_import.clear(); | |
11fdf7f2 | 9452 | encode(imported_caps, mdr->more()->inode_import); |
7c673cae FG |
9453 | |
9454 | /* hack: add an auth pin for each xlock we hold. These were | |
9455 | * remote xlocks previously but now they're local and | |
9456 | * we're going to try and unpin when we xlock_finish. */ | |
11fdf7f2 TL |
9457 | |
9458 | for (auto i = mdr->locks.lower_bound(&destdnl->get_inode()->versionlock); | |
9459 | i != mdr->locks.end(); | |
9460 | ++i) { | |
9461 | SimpleLock *lock = i->lock; | |
9462 | if (lock->get_parent() != destdnl->get_inode()) | |
9463 | break; | |
9464 | if (i->is_xlock() && !lock->is_locallock()) | |
9465 | mds->locker->xlock_import(lock); | |
9466 | } | |
7c673cae FG |
9467 | |
9468 | // hack: fix auth bit | |
9469 | in->state_set(CInode::STATE_AUTH); | |
7c673cae FG |
9470 | |
9471 | mdr->clear_ambiguous_auth(); | |
9472 | } | |
9473 | ||
11fdf7f2 | 9474 | if (destdn->is_auth()) |
f67539c2 | 9475 | in->pop_and_dirty_projected_inode(mdr->ls, mdr); |
7c673cae FG |
9476 | } |
9477 | ||
9478 | // src | |
9479 | if (srcdn->is_auth()) | |
9480 | srcdn->mark_dirty(mdr->more()->pvmap[srcdn], mdr->ls); | |
9481 | srcdn->pop_projected_linkage(); | |
f67539c2 | 9482 | if (mdr->is_peer() && !mdr->more()->peer_update_journaled) |
11fdf7f2 | 9483 | ceph_assert(!srcdn->is_projected()); // no other projected |
7c673cae FG |
9484 | |
9485 | // apply remaining projected inodes (nested) | |
9486 | mdr->apply(); | |
9487 | ||
9488 | // update subtree map? | |
11fdf7f2 | 9489 | if (destdnl->is_primary() && in->is_dir()) |
224ce89b | 9490 | mdcache->adjust_subtree_after_rename(in, srcdn->get_dir(), true); |
7c673cae FG |
9491 | |
9492 | if (straydn && oldin->is_dir()) | |
9493 | mdcache->adjust_subtree_after_rename(oldin, destdn->get_dir(), true); | |
9494 | ||
11fdf7f2 TL |
9495 | if (new_oldin_snaprealm) |
9496 | mdcache->do_realm_invalidate_and_update_notify(oldin, CEPH_SNAP_OP_SPLIT, false); | |
9497 | if (new_in_snaprealm) | |
9498 | mdcache->do_realm_invalidate_and_update_notify(in, CEPH_SNAP_OP_SPLIT, true); | |
9499 | ||
7c673cae FG |
9500 | // removing a new dn? |
9501 | if (srcdn->is_auth()) | |
9502 | srcdn->get_dir()->try_remove_unlinked_dn(srcdn); | |
9503 | } | |
9504 | ||
9505 | ||
9506 | ||
9507 | // ------------ | |
f67539c2 | 9508 | // PEER |
7c673cae | 9509 | |
f67539c2 | 9510 | class C_MDS_PeerRenamePrep : public ServerLogContext { |
7c673cae FG |
9511 | CDentry *srcdn, *destdn, *straydn; |
9512 | public: | |
f67539c2 | 9513 | C_MDS_PeerRenamePrep(Server *s, MDRequestRef& m, CDentry *sr, CDentry *de, CDentry *st) : |
7c673cae FG |
9514 | ServerLogContext(s, m), srcdn(sr), destdn(de), straydn(st) {} |
9515 | void finish(int r) override { | |
f67539c2 | 9516 | server->_logged_peer_rename(mdr, srcdn, destdn, straydn); |
7c673cae FG |
9517 | } |
9518 | }; | |
9519 | ||
f67539c2 | 9520 | class C_MDS_PeerRenameCommit : public ServerContext { |
7c673cae FG |
9521 | MDRequestRef mdr; |
9522 | CDentry *srcdn, *destdn, *straydn; | |
9523 | public: | |
f67539c2 | 9524 | C_MDS_PeerRenameCommit(Server *s, MDRequestRef& m, CDentry *sr, CDentry *de, CDentry *st) : |
7c673cae FG |
9525 | ServerContext(s), mdr(m), srcdn(sr), destdn(de), straydn(st) {} |
9526 | void finish(int r) override { | |
f67539c2 | 9527 | server->_commit_peer_rename(mdr, r, srcdn, destdn, straydn); |
7c673cae FG |
9528 | } |
9529 | }; | |
9530 | ||
f67539c2 | 9531 | class C_MDS_PeerRenameSessionsFlushed : public ServerContext { |
7c673cae FG |
9532 | MDRequestRef mdr; |
9533 | public: | |
f67539c2 | 9534 | C_MDS_PeerRenameSessionsFlushed(Server *s, MDRequestRef& r) : |
7c673cae FG |
9535 | ServerContext(s), mdr(r) {} |
9536 | void finish(int r) override { | |
f67539c2 | 9537 | server->_peer_rename_sessions_flushed(mdr); |
7c673cae FG |
9538 | } |
9539 | }; | |
9540 | ||
f67539c2 | 9541 | void Server::handle_peer_rename_prep(MDRequestRef& mdr) |
7c673cae | 9542 | { |
f67539c2 TL |
9543 | dout(10) << "handle_peer_rename_prep " << *mdr |
9544 | << " " << mdr->peer_request->srcdnpath | |
9545 | << " to " << mdr->peer_request->destdnpath | |
7c673cae | 9546 | << dendl; |
31f18b77 | 9547 | |
f67539c2 TL |
9548 | if (mdr->peer_request->is_interrupted()) { |
9549 | dout(10) << " peer request interrupted, sending noop reply" << dendl; | |
9550 | auto reply = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_RENAMEPREPACK); | |
31f18b77 | 9551 | reply->mark_interrupted(); |
f67539c2 TL |
9552 | mds->send_message_mds(reply, mdr->peer_to_mds); |
9553 | mdr->reset_peer_request(); | |
31f18b77 FG |
9554 | return; |
9555 | } | |
9556 | ||
7c673cae | 9557 | // discover destdn |
f67539c2 | 9558 | filepath destpath(mdr->peer_request->destdnpath); |
7c673cae FG |
9559 | dout(10) << " dest " << destpath << dendl; |
9560 | vector<CDentry*> trace; | |
f67539c2 | 9561 | CF_MDS_RetryRequestFactory cf(mdcache, mdr, false); |
9f95a23c TL |
9562 | int r = mdcache->path_traverse(mdr, cf, destpath, |
9563 | MDS_TRAVERSE_DISCOVER | MDS_TRAVERSE_PATH_LOCKED | MDS_TRAVERSE_WANT_DENTRY, | |
9564 | &trace); | |
7c673cae | 9565 | if (r > 0) return; |
f67539c2 | 9566 | if (r == -CEPHFS_ESTALE) { |
7c673cae | 9567 | mdcache->find_ino_peers(destpath.get_ino(), new C_MDS_RetryRequest(mdcache, mdr), |
f67539c2 | 9568 | mdr->peer_to_mds, true); |
7c673cae FG |
9569 | return; |
9570 | } | |
11fdf7f2 | 9571 | ceph_assert(r == 0); // we shouldn't get an error here! |
7c673cae | 9572 | |
91327a77 | 9573 | CDentry *destdn = trace.back(); |
7c673cae FG |
9574 | CDentry::linkage_t *destdnl = destdn->get_projected_linkage(); |
9575 | dout(10) << " destdn " << *destdn << dendl; | |
9576 | mdr->pin(destdn); | |
9577 | ||
9578 | // discover srcdn | |
f67539c2 | 9579 | filepath srcpath(mdr->peer_request->srcdnpath); |
7c673cae FG |
9580 | dout(10) << " src " << srcpath << dendl; |
9581 | CInode *srci = nullptr; | |
9f95a23c TL |
9582 | r = mdcache->path_traverse(mdr, cf, srcpath, |
9583 | MDS_TRAVERSE_DISCOVER | MDS_TRAVERSE_PATH_LOCKED, | |
9584 | &trace, &srci); | |
7c673cae | 9585 | if (r > 0) return; |
11fdf7f2 | 9586 | ceph_assert(r == 0); |
7c673cae | 9587 | |
91327a77 | 9588 | CDentry *srcdn = trace.back(); |
7c673cae FG |
9589 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); |
9590 | dout(10) << " srcdn " << *srcdn << dendl; | |
9591 | mdr->pin(srcdn); | |
9592 | mdr->pin(srci); | |
9593 | ||
9594 | // stray? | |
11fdf7f2 TL |
9595 | bool linkmerge = srcdnl->get_inode() == destdnl->get_inode(); |
9596 | if (linkmerge) | |
9597 | ceph_assert(srcdnl->is_primary() && destdnl->is_remote()); | |
7c673cae FG |
9598 | CDentry *straydn = mdr->straydn; |
9599 | if (destdnl->is_primary() && !linkmerge) | |
11fdf7f2 | 9600 | ceph_assert(straydn); |
7c673cae | 9601 | |
f67539c2 | 9602 | mdr->set_op_stamp(mdr->peer_request->op_stamp); |
7c673cae FG |
9603 | mdr->more()->srcdn_auth_mds = srcdn->authority().first; |
9604 | ||
9605 | // set up commit waiter (early, to clean up any freezing etc we do) | |
f67539c2 TL |
9606 | if (!mdr->more()->peer_commit) |
9607 | mdr->more()->peer_commit = new C_MDS_PeerRenameCommit(this, mdr, srcdn, destdn, straydn); | |
7c673cae FG |
9608 | |
9609 | // am i srcdn auth? | |
9610 | if (srcdn->is_auth()) { | |
9611 | set<mds_rank_t> srcdnrep; | |
9612 | srcdn->list_replicas(srcdnrep); | |
9613 | ||
9614 | bool reply_witness = false; | |
9615 | if (srcdnl->is_primary() && !srcdnl->get_inode()->state_test(CInode::STATE_AMBIGUOUSAUTH)) { | |
9616 | // freeze? | |
9617 | // we need this to | |
9618 | // - avoid conflicting lock state changes | |
9619 | // - avoid concurrent updates to the inode | |
9620 | // (this could also be accomplished with the versionlock) | |
11fdf7f2 | 9621 | int allowance = 3; // 1 for the mdr auth_pin, 1 for the link lock, 1 for the snap lock |
7c673cae FG |
9622 | dout(10) << " freezing srci " << *srcdnl->get_inode() << " with allowance " << allowance << dendl; |
9623 | bool frozen_inode = srcdnl->get_inode()->freeze_inode(allowance); | |
9624 | ||
9625 | // unfreeze auth pin after freezing the inode to avoid queueing waiters | |
9626 | if (srcdnl->get_inode()->is_frozen_auth_pin()) | |
9627 | mdr->unfreeze_auth_pin(); | |
9628 | ||
9629 | if (!frozen_inode) { | |
9630 | srcdnl->get_inode()->add_waiter(CInode::WAIT_FROZEN, new C_MDS_RetryRequest(mdcache, mdr)); | |
9631 | return; | |
9632 | } | |
9633 | ||
9634 | /* | |
9635 | * set ambiguous auth for srci | |
9636 | * NOTE: we don't worry about ambiguous cache expire as we do | |
f67539c2 | 9637 | * with subtree migrations because all peers will pin |
7c673cae FG |
9638 | * srcdn->get_inode() for duration of this rename. |
9639 | */ | |
9640 | mdr->set_ambiguous_auth(srcdnl->get_inode()); | |
9641 | ||
9642 | // just mark the source inode as ambiguous auth if more than two MDS are involved. | |
f67539c2 TL |
9643 | // the leader will send another OP_RENAMEPREP peer request later. |
9644 | if (mdr->peer_request->witnesses.size() > 1) { | |
7c673cae FG |
9645 | dout(10) << " set srci ambiguous auth; providing srcdn replica list" << dendl; |
9646 | reply_witness = true; | |
9647 | } | |
9648 | ||
9649 | // make sure bystanders have received all lock related messages | |
9650 | for (set<mds_rank_t>::iterator p = srcdnrep.begin(); p != srcdnrep.end(); ++p) { | |
f67539c2 | 9651 | if (*p == mdr->peer_to_mds || |
7c673cae FG |
9652 | (mds->is_cluster_degraded() && |
9653 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(*p))) | |
9654 | continue; | |
f67539c2 | 9655 | auto notify = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_RENAMENOTIFY); |
7c673cae | 9656 | mds->send_message_mds(notify, *p); |
f67539c2 | 9657 | mdr->more()->waiting_on_peer.insert(*p); |
7c673cae FG |
9658 | } |
9659 | ||
9660 | // make sure clients have received all cap related messages | |
9661 | set<client_t> export_client_set; | |
9662 | mdcache->migrator->get_export_client_set(srcdnl->get_inode(), export_client_set); | |
9663 | ||
9664 | MDSGatherBuilder gather(g_ceph_context); | |
9665 | flush_client_sessions(export_client_set, gather); | |
9666 | if (gather.has_subs()) { | |
f67539c2 TL |
9667 | mdr->more()->waiting_on_peer.insert(MDS_RANK_NONE); |
9668 | gather.set_finisher(new C_MDS_PeerRenameSessionsFlushed(this, mdr)); | |
7c673cae FG |
9669 | gather.activate(); |
9670 | } | |
9671 | } | |
9672 | ||
9673 | // is witness list sufficient? | |
9674 | for (set<mds_rank_t>::iterator p = srcdnrep.begin(); p != srcdnrep.end(); ++p) { | |
f67539c2 TL |
9675 | if (*p == mdr->peer_to_mds || |
9676 | mdr->peer_request->witnesses.count(*p)) continue; | |
7c673cae FG |
9677 | dout(10) << " witness list insufficient; providing srcdn replica list" << dendl; |
9678 | reply_witness = true; | |
9679 | break; | |
9680 | } | |
9681 | ||
9682 | if (reply_witness) { | |
11fdf7f2 | 9683 | ceph_assert(!srcdnrep.empty()); |
f67539c2 | 9684 | auto reply = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_RENAMEPREPACK); |
7c673cae | 9685 | reply->witnesses.swap(srcdnrep); |
f67539c2 TL |
9686 | mds->send_message_mds(reply, mdr->peer_to_mds); |
9687 | mdr->reset_peer_request(); | |
7c673cae FG |
9688 | return; |
9689 | } | |
9690 | dout(10) << " witness list sufficient: includes all srcdn replicas" << dendl; | |
f67539c2 | 9691 | if (!mdr->more()->waiting_on_peer.empty()) { |
7c673cae | 9692 | dout(10) << " still waiting for rename notify acks from " |
f67539c2 | 9693 | << mdr->more()->waiting_on_peer << dendl; |
7c673cae FG |
9694 | return; |
9695 | } | |
9696 | } else if (srcdnl->is_primary() && srcdn->authority() != destdn->authority()) { | |
9697 | // set ambiguous auth for srci on witnesses | |
9698 | mdr->set_ambiguous_auth(srcdnl->get_inode()); | |
9699 | } | |
9700 | ||
9701 | // encode everything we'd need to roll this back... basically, just the original state. | |
9702 | rename_rollback rollback; | |
9703 | ||
9704 | rollback.reqid = mdr->reqid; | |
9705 | ||
9706 | rollback.orig_src.dirfrag = srcdn->get_dir()->dirfrag(); | |
9707 | rollback.orig_src.dirfrag_old_mtime = srcdn->get_dir()->get_projected_fnode()->fragstat.mtime; | |
9708 | rollback.orig_src.dirfrag_old_rctime = srcdn->get_dir()->get_projected_fnode()->rstat.rctime; | |
11fdf7f2 | 9709 | rollback.orig_src.dname = srcdn->get_name(); |
7c673cae FG |
9710 | if (srcdnl->is_primary()) |
9711 | rollback.orig_src.ino = srcdnl->get_inode()->ino(); | |
9712 | else { | |
11fdf7f2 | 9713 | ceph_assert(srcdnl->is_remote()); |
7c673cae FG |
9714 | rollback.orig_src.remote_ino = srcdnl->get_remote_ino(); |
9715 | rollback.orig_src.remote_d_type = srcdnl->get_remote_d_type(); | |
9716 | } | |
9717 | ||
9718 | rollback.orig_dest.dirfrag = destdn->get_dir()->dirfrag(); | |
9719 | rollback.orig_dest.dirfrag_old_mtime = destdn->get_dir()->get_projected_fnode()->fragstat.mtime; | |
9720 | rollback.orig_dest.dirfrag_old_rctime = destdn->get_dir()->get_projected_fnode()->rstat.rctime; | |
11fdf7f2 | 9721 | rollback.orig_dest.dname = destdn->get_name(); |
7c673cae FG |
9722 | if (destdnl->is_primary()) |
9723 | rollback.orig_dest.ino = destdnl->get_inode()->ino(); | |
9724 | else if (destdnl->is_remote()) { | |
9725 | rollback.orig_dest.remote_ino = destdnl->get_remote_ino(); | |
9726 | rollback.orig_dest.remote_d_type = destdnl->get_remote_d_type(); | |
9727 | } | |
9728 | ||
9729 | if (straydn) { | |
9730 | rollback.stray.dirfrag = straydn->get_dir()->dirfrag(); | |
9731 | rollback.stray.dirfrag_old_mtime = straydn->get_dir()->get_projected_fnode()->fragstat.mtime; | |
9732 | rollback.stray.dirfrag_old_rctime = straydn->get_dir()->get_projected_fnode()->rstat.rctime; | |
11fdf7f2 TL |
9733 | rollback.stray.dname = straydn->get_name(); |
9734 | } | |
f67539c2 | 9735 | if (mdr->peer_request->desti_snapbl.length()) { |
11fdf7f2 TL |
9736 | CInode *oldin = destdnl->get_inode(); |
9737 | if (oldin->snaprealm) { | |
9738 | encode(true, rollback.desti_snapbl); | |
9739 | oldin->encode_snap_blob(rollback.desti_snapbl); | |
9740 | } else { | |
9741 | encode(false, rollback.desti_snapbl); | |
9742 | } | |
9743 | } | |
f67539c2 | 9744 | if (mdr->peer_request->srci_snapbl.length()) { |
11fdf7f2 TL |
9745 | if (srci->snaprealm) { |
9746 | encode(true, rollback.srci_snapbl); | |
9747 | srci->encode_snap_blob(rollback.srci_snapbl); | |
9748 | } else { | |
9749 | encode(false, rollback.srci_snapbl); | |
9750 | } | |
7c673cae | 9751 | } |
11fdf7f2 TL |
9752 | encode(rollback, mdr->more()->rollback_bl); |
9753 | // FIXME: rollback snaprealm | |
7c673cae FG |
9754 | dout(20) << " rollback is " << mdr->more()->rollback_bl.length() << " bytes" << dendl; |
9755 | ||
9756 | // journal. | |
9757 | mdr->ls = mdlog->get_current_segment(); | |
f67539c2 TL |
9758 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_rename_prep", mdr->reqid, mdr->peer_to_mds, |
9759 | EPeerUpdate::OP_PREPARE, EPeerUpdate::RENAME); | |
7c673cae FG |
9760 | mdlog->start_entry(le); |
9761 | le->rollback = mdr->more()->rollback_bl; | |
9762 | ||
f67539c2 TL |
9763 | bufferlist blah; // inode import data... obviously not used if we're the peer |
9764 | _rename_prepare(mdr, &le->commit, &blah, srcdn, destdn, mdr->peer_request->alternate_name, straydn); | |
7c673cae FG |
9765 | |
9766 | if (le->commit.empty()) { | |
9767 | dout(10) << " empty metablob, skipping journal" << dendl; | |
9768 | mdlog->cancel_entry(le); | |
9769 | mdr->ls = NULL; | |
f67539c2 | 9770 | _logged_peer_rename(mdr, srcdn, destdn, straydn); |
7c673cae | 9771 | } else { |
f67539c2 TL |
9772 | mdcache->add_uncommitted_peer(mdr->reqid, mdr->ls, mdr->peer_to_mds); |
9773 | mdr->more()->peer_update_journaled = true; | |
9774 | submit_mdlog_entry(le, new C_MDS_PeerRenamePrep(this, mdr, srcdn, destdn, straydn), | |
7c673cae FG |
9775 | mdr, __func__); |
9776 | mdlog->flush(); | |
9777 | } | |
9778 | } | |
9779 | ||
f67539c2 | 9780 | void Server::_logged_peer_rename(MDRequestRef& mdr, |
7c673cae FG |
9781 | CDentry *srcdn, CDentry *destdn, CDentry *straydn) |
9782 | { | |
f67539c2 | 9783 | dout(10) << "_logged_peer_rename " << *mdr << dendl; |
7c673cae FG |
9784 | |
9785 | // prepare ack | |
f67539c2 | 9786 | ref_t<MMDSPeerRequest> reply; |
7c673cae | 9787 | if (!mdr->aborted) { |
f67539c2 TL |
9788 | reply = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, MMDSPeerRequest::OP_RENAMEPREPACK); |
9789 | if (!mdr->more()->peer_update_journaled) | |
7c673cae FG |
9790 | reply->mark_not_journaled(); |
9791 | } | |
9792 | ||
9793 | CDentry::linkage_t *srcdnl = srcdn->get_linkage(); | |
7c673cae FG |
9794 | //CDentry::linkage_t *straydnl = straydn ? straydn->get_linkage() : 0; |
9795 | ||
9796 | // export srci? | |
9797 | if (srcdn->is_auth() && srcdnl->is_primary()) { | |
9798 | // set export bounds for CInode::encode_export() | |
11fdf7f2 | 9799 | if (reply) { |
9f95a23c | 9800 | std::vector<CDir*> bounds; |
11fdf7f2 TL |
9801 | if (srcdnl->get_inode()->is_dir()) { |
9802 | srcdnl->get_inode()->get_dirfrags(bounds); | |
9f95a23c TL |
9803 | for (const auto& bound : bounds) { |
9804 | bound->state_set(CDir::STATE_EXPORTBOUND); | |
9805 | } | |
11fdf7f2 | 9806 | } |
7c673cae | 9807 | |
11fdf7f2 TL |
9808 | map<client_t,entity_inst_t> exported_client_map; |
9809 | map<client_t, client_metadata_t> exported_client_metadata_map; | |
9810 | bufferlist inodebl; | |
9811 | mdcache->migrator->encode_export_inode(srcdnl->get_inode(), inodebl, | |
9812 | exported_client_map, | |
9813 | exported_client_metadata_map); | |
7c673cae | 9814 | |
9f95a23c TL |
9815 | for (const auto& bound : bounds) { |
9816 | bound->state_clear(CDir::STATE_EXPORTBOUND); | |
9817 | } | |
7c673cae | 9818 | |
11fdf7f2 TL |
9819 | encode(exported_client_map, reply->inode_export, mds->mdsmap->get_up_features()); |
9820 | encode(exported_client_metadata_map, reply->inode_export); | |
7c673cae | 9821 | reply->inode_export.claim_append(inodebl); |
f67539c2 | 9822 | reply->inode_export_v = srcdnl->get_inode()->get_version(); |
7c673cae FG |
9823 | } |
9824 | ||
9825 | // remove mdr auth pin | |
9826 | mdr->auth_unpin(srcdnl->get_inode()); | |
9827 | mdr->more()->is_inode_exporter = true; | |
9828 | ||
9829 | if (srcdnl->get_inode()->is_dirty()) | |
9830 | srcdnl->get_inode()->mark_clean(); | |
9831 | ||
9832 | dout(10) << " exported srci " << *srcdnl->get_inode() << dendl; | |
9833 | } | |
9834 | ||
9835 | // apply | |
9836 | _rename_apply(mdr, srcdn, destdn, straydn); | |
11fdf7f2 TL |
9837 | |
9838 | CDentry::linkage_t *destdnl = destdn->get_linkage(); | |
7c673cae FG |
9839 | |
9840 | // bump popularity | |
11fdf7f2 | 9841 | mds->balancer->hit_dir(srcdn->get_dir(), META_POP_IWR); |
7c673cae | 9842 | if (destdnl->get_inode() && destdnl->get_inode()->is_auth()) |
11fdf7f2 | 9843 | mds->balancer->hit_inode(destdnl->get_inode(), META_POP_IWR); |
7c673cae FG |
9844 | |
9845 | // done. | |
f67539c2 | 9846 | mdr->reset_peer_request(); |
7c673cae FG |
9847 | mdr->straydn = 0; |
9848 | ||
9849 | if (reply) { | |
f67539c2 | 9850 | mds->send_message_mds(reply, mdr->peer_to_mds); |
7c673cae | 9851 | } else { |
11fdf7f2 | 9852 | ceph_assert(mdr->aborted); |
7c673cae FG |
9853 | dout(10) << " abort flag set, finishing" << dendl; |
9854 | mdcache->request_finish(mdr); | |
9855 | } | |
9856 | } | |
9857 | ||
f67539c2 | 9858 | void Server::_commit_peer_rename(MDRequestRef& mdr, int r, |
7c673cae FG |
9859 | CDentry *srcdn, CDentry *destdn, CDentry *straydn) |
9860 | { | |
f67539c2 | 9861 | dout(10) << "_commit_peer_rename " << *mdr << " r=" << r << dendl; |
7c673cae | 9862 | |
f64942e4 AA |
9863 | CInode *in = destdn->get_linkage()->get_inode(); |
9864 | ||
9865 | inodeno_t migrated_stray; | |
9866 | if (srcdn->is_auth() && srcdn->get_dir()->inode->is_stray()) | |
9867 | migrated_stray = in->ino(); | |
7c673cae | 9868 | |
11fdf7f2 | 9869 | MDSContext::vec finished; |
7c673cae FG |
9870 | if (r == 0) { |
9871 | // unfreeze+singleauth inode | |
9872 | // hmm, do i really need to delay this? | |
9873 | if (mdr->more()->is_inode_exporter) { | |
7c673cae FG |
9874 | // drop our pins |
9875 | // we exported, clear out any xlocks that we moved to another MDS | |
7c673cae | 9876 | |
11fdf7f2 TL |
9877 | for (auto i = mdr->locks.lower_bound(&in->versionlock); |
9878 | i != mdr->locks.end(); ) { | |
9879 | SimpleLock *lock = i->lock; | |
9880 | if (lock->get_parent() != in) | |
9881 | break; | |
7c673cae | 9882 | // we only care about xlocks on the exported inode |
11fdf7f2 TL |
9883 | if (i->is_xlock() && !lock->is_locallock()) |
9884 | mds->locker->xlock_export(i++, mdr.get()); | |
9885 | else | |
9886 | ++i; | |
7c673cae FG |
9887 | } |
9888 | ||
9889 | map<client_t,Capability::Import> peer_imported; | |
11fdf7f2 TL |
9890 | auto bp = mdr->more()->inode_import.cbegin(); |
9891 | decode(peer_imported, bp); | |
7c673cae | 9892 | |
f64942e4 | 9893 | dout(10) << " finishing inode export on " << *in << dendl; |
f67539c2 | 9894 | mdcache->migrator->finish_export_inode(in, mdr->peer_to_mds, peer_imported, finished); |
7c673cae FG |
9895 | mds->queue_waiters(finished); // this includes SINGLEAUTH waiters. |
9896 | ||
9897 | // unfreeze | |
11fdf7f2 | 9898 | ceph_assert(in->is_frozen_inode()); |
f64942e4 | 9899 | in->unfreeze_inode(finished); |
7c673cae FG |
9900 | } |
9901 | ||
9902 | // singleauth | |
9903 | if (mdr->more()->is_ambiguous_auth) { | |
9904 | mdr->more()->rename_inode->clear_ambiguous_auth(finished); | |
9905 | mdr->more()->is_ambiguous_auth = false; | |
9906 | } | |
9907 | ||
f67539c2 | 9908 | if (straydn && mdr->more()->peer_update_journaled) { |
31f18b77 FG |
9909 | CInode *strayin = straydn->get_projected_linkage()->get_inode(); |
9910 | if (strayin && !strayin->snaprealm) | |
9911 | mdcache->clear_dirty_bits_for_stray(strayin); | |
9912 | } | |
7c673cae FG |
9913 | |
9914 | mds->queue_waiters(finished); | |
9915 | mdr->cleanup(); | |
9916 | ||
f67539c2 | 9917 | if (mdr->more()->peer_update_journaled) { |
7c673cae | 9918 | // write a commit to the journal |
f67539c2 TL |
9919 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_rename_commit", mdr->reqid, |
9920 | mdr->peer_to_mds, EPeerUpdate::OP_COMMIT, | |
9921 | EPeerUpdate::RENAME); | |
7c673cae | 9922 | mdlog->start_entry(le); |
f67539c2 | 9923 | submit_mdlog_entry(le, new C_MDS_CommittedPeer(this, mdr), mdr, __func__); |
7c673cae FG |
9924 | mdlog->flush(); |
9925 | } else { | |
f67539c2 | 9926 | _committed_peer(mdr); |
7c673cae FG |
9927 | } |
9928 | } else { | |
9929 | ||
9930 | // abort | |
9931 | // rollback_bl may be empty if we froze the inode but had to provide an expanded | |
f67539c2 | 9932 | // witness list from the leader, and they failed before we tried prep again. |
7c673cae FG |
9933 | if (mdr->more()->rollback_bl.length()) { |
9934 | if (mdr->more()->is_inode_exporter) { | |
f64942e4 AA |
9935 | dout(10) << " reversing inode export of " << *in << dendl; |
9936 | in->abort_export(); | |
7c673cae | 9937 | } |
f67539c2 TL |
9938 | if (mdcache->is_ambiguous_peer_update(mdr->reqid, mdr->peer_to_mds)) { |
9939 | mdcache->remove_ambiguous_peer_update(mdr->reqid, mdr->peer_to_mds); | |
9940 | // rollback but preserve the peer request | |
9941 | do_rename_rollback(mdr->more()->rollback_bl, mdr->peer_to_mds, mdr, false); | |
7c673cae FG |
9942 | mdr->more()->rollback_bl.clear(); |
9943 | } else | |
f67539c2 | 9944 | do_rename_rollback(mdr->more()->rollback_bl, mdr->peer_to_mds, mdr, true); |
7c673cae | 9945 | } else { |
f67539c2 | 9946 | dout(10) << " rollback_bl empty, not rollback back rename (leader failed after getting extra witnesses?)" << dendl; |
7c673cae FG |
9947 | // singleauth |
9948 | if (mdr->more()->is_ambiguous_auth) { | |
9949 | if (srcdn->is_auth()) | |
9950 | mdr->more()->rename_inode->unfreeze_inode(finished); | |
9951 | ||
9952 | mdr->more()->rename_inode->clear_ambiguous_auth(finished); | |
9953 | mdr->more()->is_ambiguous_auth = false; | |
9954 | } | |
9955 | mds->queue_waiters(finished); | |
9956 | mdcache->request_finish(mdr); | |
9957 | } | |
9958 | } | |
f64942e4 AA |
9959 | |
9960 | if (migrated_stray && mds->is_stopping()) | |
9961 | mdcache->shutdown_export_stray_finish(migrated_stray); | |
7c673cae FG |
9962 | } |
9963 | ||
f67539c2 TL |
9964 | static void _rollback_repair_dir(MutationRef& mut, CDir *dir, |
9965 | rename_rollback::drec &r, utime_t ctime, | |
9966 | bool isdir, const nest_info_t &rstat) | |
7c673cae | 9967 | { |
f67539c2 | 9968 | auto pf = dir->project_fnode(mut); |
7c673cae FG |
9969 | pf->version = dir->pre_dirty(); |
9970 | ||
9971 | if (isdir) { | |
f67539c2 | 9972 | pf->fragstat.nsubdirs += 1; |
7c673cae | 9973 | } else { |
f67539c2 | 9974 | pf->fragstat.nfiles += 1; |
7c673cae FG |
9975 | } |
9976 | if (r.ino) { | |
f67539c2 TL |
9977 | pf->rstat.rbytes += rstat.rbytes; |
9978 | pf->rstat.rfiles += rstat.rfiles; | |
9979 | pf->rstat.rsubdirs += rstat.rsubdirs; | |
9980 | pf->rstat.rsnaps += rstat.rsnaps; | |
7c673cae FG |
9981 | } |
9982 | if (pf->fragstat.mtime == ctime) { | |
9983 | pf->fragstat.mtime = r.dirfrag_old_mtime; | |
9984 | if (pf->rstat.rctime == ctime) | |
9985 | pf->rstat.rctime = r.dirfrag_old_rctime; | |
9986 | } | |
9987 | mut->add_updated_lock(&dir->get_inode()->filelock); | |
9988 | mut->add_updated_lock(&dir->get_inode()->nestlock); | |
9989 | } | |
9990 | ||
9991 | struct C_MDS_LoggedRenameRollback : public ServerLogContext { | |
9992 | MutationRef mut; | |
9993 | CDentry *srcdn; | |
9994 | version_t srcdnpv; | |
9995 | CDentry *destdn; | |
9996 | CDentry *straydn; | |
9f95a23c | 9997 | map<client_t,ref_t<MClientSnap>> splits[2]; |
7c673cae FG |
9998 | bool finish_mdr; |
9999 | C_MDS_LoggedRenameRollback(Server *s, MutationRef& m, MDRequestRef& r, | |
11fdf7f2 | 10000 | CDentry *sd, version_t pv, CDentry *dd, CDentry *st, |
9f95a23c | 10001 | map<client_t,ref_t<MClientSnap>> _splits[2], bool f) : |
7c673cae | 10002 | ServerLogContext(s, r), mut(m), srcdn(sd), srcdnpv(pv), destdn(dd), |
11fdf7f2 TL |
10003 | straydn(st), finish_mdr(f) { |
10004 | splits[0].swap(_splits[0]); | |
10005 | splits[1].swap(_splits[1]); | |
10006 | } | |
7c673cae FG |
10007 | void finish(int r) override { |
10008 | server->_rename_rollback_finish(mut, mdr, srcdn, srcdnpv, | |
11fdf7f2 | 10009 | destdn, straydn, splits, finish_mdr); |
7c673cae FG |
10010 | } |
10011 | }; | |
10012 | ||
f67539c2 | 10013 | void Server::do_rename_rollback(bufferlist &rbl, mds_rank_t leader, MDRequestRef& mdr, |
7c673cae FG |
10014 | bool finish_mdr) |
10015 | { | |
10016 | rename_rollback rollback; | |
11fdf7f2 TL |
10017 | auto p = rbl.cbegin(); |
10018 | decode(rollback, p); | |
7c673cae FG |
10019 | |
10020 | dout(10) << "do_rename_rollback on " << rollback.reqid << dendl; | |
10021 | // need to finish this update before sending resolve to claim the subtree | |
f67539c2 | 10022 | mdcache->add_rollback(rollback.reqid, leader); |
7c673cae FG |
10023 | |
10024 | MutationRef mut(new MutationImpl(nullptr, utime_t(), rollback.reqid)); | |
10025 | mut->ls = mds->mdlog->get_current_segment(); | |
10026 | ||
10027 | CDentry *srcdn = NULL; | |
10028 | CDir *srcdir = mdcache->get_dirfrag(rollback.orig_src.dirfrag); | |
10029 | if (!srcdir) | |
10030 | srcdir = mdcache->get_dirfrag(rollback.orig_src.dirfrag.ino, rollback.orig_src.dname); | |
10031 | if (srcdir) { | |
10032 | dout(10) << " srcdir " << *srcdir << dendl; | |
10033 | srcdn = srcdir->lookup(rollback.orig_src.dname); | |
10034 | if (srcdn) { | |
10035 | dout(10) << " srcdn " << *srcdn << dendl; | |
11fdf7f2 | 10036 | ceph_assert(srcdn->get_linkage()->is_null()); |
7c673cae FG |
10037 | } else |
10038 | dout(10) << " srcdn not found" << dendl; | |
10039 | } else | |
10040 | dout(10) << " srcdir not found" << dendl; | |
10041 | ||
10042 | CDentry *destdn = NULL; | |
10043 | CDir *destdir = mdcache->get_dirfrag(rollback.orig_dest.dirfrag); | |
10044 | if (!destdir) | |
10045 | destdir = mdcache->get_dirfrag(rollback.orig_dest.dirfrag.ino, rollback.orig_dest.dname); | |
10046 | if (destdir) { | |
10047 | dout(10) << " destdir " << *destdir << dendl; | |
10048 | destdn = destdir->lookup(rollback.orig_dest.dname); | |
10049 | if (destdn) | |
10050 | dout(10) << " destdn " << *destdn << dendl; | |
10051 | else | |
10052 | dout(10) << " destdn not found" << dendl; | |
10053 | } else | |
10054 | dout(10) << " destdir not found" << dendl; | |
10055 | ||
10056 | CInode *in = NULL; | |
10057 | if (rollback.orig_src.ino) { | |
10058 | in = mdcache->get_inode(rollback.orig_src.ino); | |
10059 | if (in && in->is_dir()) | |
11fdf7f2 | 10060 | ceph_assert(srcdn && destdn); |
7c673cae FG |
10061 | } else |
10062 | in = mdcache->get_inode(rollback.orig_src.remote_ino); | |
10063 | ||
10064 | CDir *straydir = NULL; | |
10065 | CDentry *straydn = NULL; | |
10066 | if (rollback.stray.dirfrag.ino) { | |
10067 | straydir = mdcache->get_dirfrag(rollback.stray.dirfrag); | |
10068 | if (straydir) { | |
10069 | dout(10) << "straydir " << *straydir << dendl; | |
10070 | straydn = straydir->lookup(rollback.stray.dname); | |
10071 | if (straydn) { | |
10072 | dout(10) << " straydn " << *straydn << dendl; | |
11fdf7f2 | 10073 | ceph_assert(straydn->get_linkage()->is_primary()); |
7c673cae FG |
10074 | } else |
10075 | dout(10) << " straydn not found" << dendl; | |
10076 | } else | |
10077 | dout(10) << "straydir not found" << dendl; | |
10078 | } | |
10079 | ||
10080 | CInode *target = NULL; | |
10081 | if (rollback.orig_dest.ino) { | |
10082 | target = mdcache->get_inode(rollback.orig_dest.ino); | |
10083 | if (target) | |
11fdf7f2 | 10084 | ceph_assert(destdn && straydn); |
7c673cae FG |
10085 | } else if (rollback.orig_dest.remote_ino) |
10086 | target = mdcache->get_inode(rollback.orig_dest.remote_ino); | |
10087 | ||
10088 | // can't use is_auth() in the resolve stage | |
10089 | mds_rank_t whoami = mds->get_nodeid(); | |
f67539c2 | 10090 | // peer |
11fdf7f2 TL |
10091 | ceph_assert(!destdn || destdn->authority().first != whoami); |
10092 | ceph_assert(!straydn || straydn->authority().first != whoami); | |
7c673cae FG |
10093 | |
10094 | bool force_journal_src = false; | |
10095 | bool force_journal_dest = false; | |
10096 | if (in && in->is_dir() && srcdn->authority().first != whoami) | |
10097 | force_journal_src = _need_force_journal(in, false); | |
10098 | if (in && target && target->is_dir()) | |
10099 | force_journal_dest = _need_force_journal(in, true); | |
10100 | ||
10101 | version_t srcdnpv = 0; | |
10102 | // repair src | |
10103 | if (srcdn) { | |
10104 | if (srcdn->authority().first == whoami) | |
10105 | srcdnpv = srcdn->pre_dirty(); | |
10106 | if (rollback.orig_src.ino) { | |
11fdf7f2 | 10107 | ceph_assert(in); |
7c673cae FG |
10108 | srcdn->push_projected_linkage(in); |
10109 | } else | |
10110 | srcdn->push_projected_linkage(rollback.orig_src.remote_ino, | |
10111 | rollback.orig_src.remote_d_type); | |
10112 | } | |
10113 | ||
9f95a23c | 10114 | map<client_t,ref_t<MClientSnap>> splits[2]; |
11fdf7f2 | 10115 | |
f67539c2 | 10116 | const CInode::mempool_inode *pip = nullptr; |
7c673cae | 10117 | if (in) { |
11fdf7f2 | 10118 | bool projected; |
f67539c2 TL |
10119 | CDir *pdir = in->get_projected_parent_dir(); |
10120 | if (pdir->authority().first == whoami) { | |
10121 | auto pi = in->project_inode(mut); | |
10122 | pi.inode->version = in->pre_dirty(); | |
10123 | if (pdir != srcdir) { | |
10124 | auto pf = pdir->project_fnode(mut); | |
10125 | pf->version = pdir->pre_dirty(); | |
10126 | } | |
10127 | if (pi.inode->ctime == rollback.ctime) | |
10128 | pi.inode->ctime = rollback.orig_src.old_ctime; | |
11fdf7f2 TL |
10129 | projected = true; |
10130 | } else { | |
f67539c2 TL |
10131 | if (in->get_inode()->ctime == rollback.ctime) { |
10132 | auto _inode = CInode::allocate_inode(*in->get_inode()); | |
10133 | _inode->ctime = rollback.orig_src.old_ctime; | |
10134 | in->reset_inode(_inode); | |
10135 | } | |
11fdf7f2 TL |
10136 | projected = false; |
10137 | } | |
f67539c2 | 10138 | pip = in->get_projected_inode().get(); |
11fdf7f2 TL |
10139 | |
10140 | if (rollback.srci_snapbl.length() && in->snaprealm) { | |
10141 | bool hadrealm; | |
10142 | auto p = rollback.srci_snapbl.cbegin(); | |
10143 | decode(hadrealm, p); | |
10144 | if (hadrealm) { | |
10145 | if (projected && !mds->is_resolve()) { | |
10146 | sr_t *new_srnode = new sr_t(); | |
10147 | decode(*new_srnode, p); | |
10148 | in->project_snaprealm(new_srnode); | |
10149 | } else | |
10150 | decode(in->snaprealm->srnode, p); | |
10151 | } else { | |
10152 | SnapRealm *realm; | |
10153 | if (rollback.orig_src.ino) { | |
10154 | ceph_assert(srcdir); | |
10155 | realm = srcdir->get_inode()->find_snaprealm(); | |
10156 | } else { | |
10157 | realm = in->snaprealm->parent; | |
10158 | } | |
10159 | if (!mds->is_resolve()) | |
10160 | mdcache->prepare_realm_merge(in->snaprealm, realm, splits[0]); | |
10161 | if (projected) | |
10162 | in->project_snaprealm(NULL); | |
10163 | else | |
10164 | in->snaprealm->merge_to(realm); | |
10165 | } | |
10166 | } | |
7c673cae FG |
10167 | } |
10168 | ||
7c673cae FG |
10169 | // repair dest |
10170 | if (destdn) { | |
10171 | if (rollback.orig_dest.ino && target) { | |
10172 | destdn->push_projected_linkage(target); | |
10173 | } else if (rollback.orig_dest.remote_ino) { | |
10174 | destdn->push_projected_linkage(rollback.orig_dest.remote_ino, | |
10175 | rollback.orig_dest.remote_d_type); | |
10176 | } else { | |
10177 | // the dentry will be trimmed soon, it's ok to have wrong linkage | |
10178 | if (rollback.orig_dest.ino) | |
11fdf7f2 | 10179 | ceph_assert(mds->is_resolve()); |
7c673cae FG |
10180 | destdn->push_projected_linkage(); |
10181 | } | |
10182 | } | |
10183 | ||
10184 | if (straydn) | |
10185 | straydn->push_projected_linkage(); | |
10186 | ||
10187 | if (target) { | |
11fdf7f2 | 10188 | bool projected; |
f67539c2 TL |
10189 | CInode::inode_ptr ti; |
10190 | CDir *pdir = target->get_projected_parent_dir(); | |
10191 | if (pdir->authority().first == whoami) { | |
10192 | auto pi = target->project_inode(mut); | |
10193 | pi.inode->version = target->pre_dirty(); | |
10194 | if (pdir != srcdir) { | |
10195 | auto pf = pdir->project_fnode(mut); | |
10196 | pf->version = pdir->pre_dirty(); | |
10197 | } | |
10198 | ti = pi.inode; | |
11fdf7f2 TL |
10199 | projected = true; |
10200 | } else { | |
f67539c2 | 10201 | ti = CInode::allocate_inode(*target->get_inode()); |
11fdf7f2 TL |
10202 | projected = false; |
10203 | } | |
f67539c2 | 10204 | |
7c673cae | 10205 | if (ti->ctime == rollback.ctime) |
91327a77 | 10206 | ti->ctime = rollback.orig_dest.old_ctime; |
7c673cae FG |
10207 | if (MDS_INO_IS_STRAY(rollback.orig_src.dirfrag.ino)) { |
10208 | if (MDS_INO_IS_STRAY(rollback.orig_dest.dirfrag.ino)) | |
11fdf7f2 | 10209 | ceph_assert(!rollback.orig_dest.ino && !rollback.orig_dest.remote_ino); |
7c673cae | 10210 | else |
11fdf7f2 | 10211 | ceph_assert(rollback.orig_dest.remote_ino && |
7c673cae FG |
10212 | rollback.orig_dest.remote_ino == rollback.orig_src.ino); |
10213 | } else | |
10214 | ti->nlink++; | |
11fdf7f2 | 10215 | |
f67539c2 TL |
10216 | if (!projected) |
10217 | target->reset_inode(ti); | |
10218 | ||
11fdf7f2 TL |
10219 | if (rollback.desti_snapbl.length() && target->snaprealm) { |
10220 | bool hadrealm; | |
10221 | auto p = rollback.desti_snapbl.cbegin(); | |
10222 | decode(hadrealm, p); | |
10223 | if (hadrealm) { | |
10224 | if (projected && !mds->is_resolve()) { | |
10225 | sr_t *new_srnode = new sr_t(); | |
10226 | decode(*new_srnode, p); | |
10227 | target->project_snaprealm(new_srnode); | |
10228 | } else | |
10229 | decode(target->snaprealm->srnode, p); | |
10230 | } else { | |
10231 | SnapRealm *realm; | |
10232 | if (rollback.orig_dest.ino) { | |
10233 | ceph_assert(destdir); | |
10234 | realm = destdir->get_inode()->find_snaprealm(); | |
10235 | } else { | |
10236 | realm = target->snaprealm->parent; | |
10237 | } | |
10238 | if (!mds->is_resolve()) | |
10239 | mdcache->prepare_realm_merge(target->snaprealm, realm, splits[1]); | |
10240 | if (projected) | |
10241 | target->project_snaprealm(NULL); | |
10242 | else | |
10243 | target->snaprealm->merge_to(realm); | |
10244 | } | |
10245 | } | |
7c673cae FG |
10246 | } |
10247 | ||
f67539c2 TL |
10248 | if (srcdn && srcdn->authority().first == whoami) { |
10249 | nest_info_t blah; | |
10250 | _rollback_repair_dir(mut, srcdir, rollback.orig_src, rollback.ctime, | |
10251 | in && in->is_dir(), pip ? pip->accounted_rstat : blah); | |
10252 | } | |
10253 | ||
7c673cae FG |
10254 | if (srcdn) |
10255 | dout(0) << " srcdn back to " << *srcdn << dendl; | |
10256 | if (in) | |
10257 | dout(0) << " srci back to " << *in << dendl; | |
10258 | if (destdn) | |
10259 | dout(0) << " destdn back to " << *destdn << dendl; | |
10260 | if (target) | |
10261 | dout(0) << " desti back to " << *target << dendl; | |
10262 | ||
10263 | // journal it | |
f67539c2 TL |
10264 | EPeerUpdate *le = new EPeerUpdate(mdlog, "peer_rename_rollback", rollback.reqid, leader, |
10265 | EPeerUpdate::OP_ROLLBACK, EPeerUpdate::RENAME); | |
7c673cae FG |
10266 | mdlog->start_entry(le); |
10267 | ||
10268 | if (srcdn && (srcdn->authority().first == whoami || force_journal_src)) { | |
10269 | le->commit.add_dir_context(srcdir); | |
10270 | if (rollback.orig_src.ino) | |
10271 | le->commit.add_primary_dentry(srcdn, 0, true); | |
10272 | else | |
10273 | le->commit.add_remote_dentry(srcdn, true); | |
10274 | } | |
10275 | ||
10276 | if (!rollback.orig_src.ino && // remote linkage | |
10277 | in && in->authority().first == whoami) { | |
10278 | le->commit.add_dir_context(in->get_projected_parent_dir()); | |
10279 | le->commit.add_primary_dentry(in->get_projected_parent_dn(), in, true); | |
10280 | } | |
10281 | ||
10282 | if (force_journal_dest) { | |
11fdf7f2 | 10283 | ceph_assert(rollback.orig_dest.ino); |
7c673cae FG |
10284 | le->commit.add_dir_context(destdir); |
10285 | le->commit.add_primary_dentry(destdn, 0, true); | |
10286 | } | |
10287 | ||
f67539c2 | 10288 | // peer: no need to journal straydn |
7c673cae FG |
10289 | |
10290 | if (target && target != in && target->authority().first == whoami) { | |
11fdf7f2 | 10291 | ceph_assert(rollback.orig_dest.remote_ino); |
7c673cae FG |
10292 | le->commit.add_dir_context(target->get_projected_parent_dir()); |
10293 | le->commit.add_primary_dentry(target->get_projected_parent_dn(), target, true); | |
10294 | } | |
10295 | ||
10296 | if (in && in->is_dir() && (srcdn->authority().first == whoami || force_journal_src)) { | |
10297 | dout(10) << " noting renamed dir ino " << in->ino() << " in metablob" << dendl; | |
10298 | le->commit.renamed_dirino = in->ino(); | |
10299 | if (srcdn->authority().first == whoami) { | |
9f95a23c TL |
10300 | auto&& ls = in->get_dirfrags(); |
10301 | for (const auto& dir : ls) { | |
7c673cae FG |
10302 | if (!dir->is_auth()) |
10303 | le->commit.renamed_dir_frags.push_back(dir->get_frag()); | |
10304 | } | |
10305 | dout(10) << " noting renamed dir open frags " << le->commit.renamed_dir_frags << dendl; | |
10306 | } | |
10307 | } else if (force_journal_dest) { | |
10308 | dout(10) << " noting rename target ino " << target->ino() << " in metablob" << dendl; | |
10309 | le->commit.renamed_dirino = target->ino(); | |
10310 | } | |
10311 | ||
10312 | if (target && target->is_dir()) { | |
11fdf7f2 | 10313 | ceph_assert(destdn); |
7c673cae FG |
10314 | mdcache->project_subtree_rename(target, straydir, destdir); |
10315 | } | |
10316 | ||
10317 | if (in && in->is_dir()) { | |
11fdf7f2 | 10318 | ceph_assert(srcdn); |
7c673cae FG |
10319 | mdcache->project_subtree_rename(in, destdir, srcdir); |
10320 | } | |
10321 | ||
f67539c2 | 10322 | if (mdr && !mdr->more()->peer_update_journaled) { |
11fdf7f2 | 10323 | ceph_assert(le->commit.empty()); |
7c673cae FG |
10324 | mdlog->cancel_entry(le); |
10325 | mut->ls = NULL; | |
11fdf7f2 | 10326 | _rename_rollback_finish(mut, mdr, srcdn, srcdnpv, destdn, straydn, splits, finish_mdr); |
7c673cae | 10327 | } else { |
11fdf7f2 | 10328 | ceph_assert(!le->commit.empty()); |
7c673cae | 10329 | if (mdr) |
f67539c2 | 10330 | mdr->more()->peer_update_journaled = false; |
11fdf7f2 TL |
10331 | MDSLogContextBase *fin = new C_MDS_LoggedRenameRollback(this, mut, mdr, |
10332 | srcdn, srcdnpv, destdn, straydn, | |
10333 | splits, finish_mdr); | |
7c673cae FG |
10334 | submit_mdlog_entry(le, fin, mdr, __func__); |
10335 | mdlog->flush(); | |
10336 | } | |
10337 | } | |
10338 | ||
10339 | void Server::_rename_rollback_finish(MutationRef& mut, MDRequestRef& mdr, CDentry *srcdn, | |
11fdf7f2 | 10340 | version_t srcdnpv, CDentry *destdn, CDentry *straydn, |
9f95a23c | 10341 | map<client_t,ref_t<MClientSnap>> splits[2], bool finish_mdr) |
7c673cae FG |
10342 | { |
10343 | dout(10) << "_rename_rollback_finish " << mut->reqid << dendl; | |
10344 | ||
10345 | if (straydn) { | |
10346 | straydn->get_dir()->unlink_inode(straydn); | |
10347 | straydn->pop_projected_linkage(); | |
10348 | } | |
10349 | if (destdn) { | |
10350 | destdn->get_dir()->unlink_inode(destdn); | |
10351 | destdn->pop_projected_linkage(); | |
10352 | } | |
10353 | if (srcdn) { | |
10354 | srcdn->pop_projected_linkage(); | |
11fdf7f2 | 10355 | if (srcdn->authority().first == mds->get_nodeid()) { |
7c673cae | 10356 | srcdn->mark_dirty(srcdnpv, mut->ls); |
11fdf7f2 TL |
10357 | if (srcdn->get_linkage()->is_primary()) |
10358 | srcdn->get_linkage()->get_inode()->state_set(CInode::STATE_AUTH); | |
10359 | } | |
7c673cae FG |
10360 | } |
10361 | ||
10362 | mut->apply(); | |
10363 | ||
10364 | if (srcdn && srcdn->get_linkage()->is_primary()) { | |
10365 | CInode *in = srcdn->get_linkage()->get_inode(); | |
7c673cae | 10366 | if (in && in->is_dir()) { |
11fdf7f2 | 10367 | ceph_assert(destdn); |
7c673cae FG |
10368 | mdcache->adjust_subtree_after_rename(in, destdn->get_dir(), true); |
10369 | } | |
10370 | } | |
10371 | ||
10372 | if (destdn) { | |
10373 | CInode *oldin = destdn->get_linkage()->get_inode(); | |
10374 | // update subtree map? | |
10375 | if (oldin && oldin->is_dir()) { | |
11fdf7f2 | 10376 | ceph_assert(straydn); |
7c673cae FG |
10377 | mdcache->adjust_subtree_after_rename(oldin, straydn->get_dir(), true); |
10378 | } | |
10379 | } | |
10380 | ||
10381 | if (mds->is_resolve()) { | |
10382 | CDir *root = NULL; | |
10383 | if (straydn) | |
10384 | root = mdcache->get_subtree_root(straydn->get_dir()); | |
10385 | else if (destdn) | |
10386 | root = mdcache->get_subtree_root(destdn->get_dir()); | |
10387 | if (root) | |
10388 | mdcache->try_trim_non_auth_subtree(root); | |
11fdf7f2 TL |
10389 | } else { |
10390 | mdcache->send_snaps(splits[1]); | |
10391 | mdcache->send_snaps(splits[0]); | |
7c673cae FG |
10392 | } |
10393 | ||
10394 | if (mdr) { | |
11fdf7f2 | 10395 | MDSContext::vec finished; |
7c673cae FG |
10396 | if (mdr->more()->is_ambiguous_auth) { |
10397 | if (srcdn->is_auth()) | |
10398 | mdr->more()->rename_inode->unfreeze_inode(finished); | |
10399 | ||
10400 | mdr->more()->rename_inode->clear_ambiguous_auth(finished); | |
10401 | mdr->more()->is_ambiguous_auth = false; | |
10402 | } | |
10403 | mds->queue_waiters(finished); | |
10404 | if (finish_mdr || mdr->aborted) | |
10405 | mdcache->request_finish(mdr); | |
10406 | else | |
f67539c2 | 10407 | mdr->more()->peer_rolling_back = false; |
7c673cae FG |
10408 | } |
10409 | ||
e306af50 | 10410 | mdcache->finish_rollback(mut->reqid, mdr); |
7c673cae FG |
10411 | |
10412 | mut->cleanup(); | |
10413 | } | |
10414 | ||
f67539c2 | 10415 | void Server::handle_peer_rename_prep_ack(MDRequestRef& mdr, const cref_t<MMDSPeerRequest> &ack) |
7c673cae | 10416 | { |
f67539c2 | 10417 | dout(10) << "handle_peer_rename_prep_ack " << *mdr |
7c673cae FG |
10418 | << " witnessed by " << ack->get_source() |
10419 | << " " << *ack << dendl; | |
10420 | mds_rank_t from = mds_rank_t(ack->get_source().num()); | |
10421 | ||
f67539c2 TL |
10422 | // note peer |
10423 | mdr->more()->peers.insert(from); | |
7c673cae FG |
10424 | if (mdr->more()->srcdn_auth_mds == from && |
10425 | mdr->more()->is_remote_frozen_authpin && | |
10426 | !mdr->more()->is_ambiguous_auth) { | |
10427 | mdr->set_ambiguous_auth(mdr->more()->rename_inode); | |
10428 | } | |
10429 | ||
10430 | // witnessed? or add extra witnesses? | |
11fdf7f2 | 10431 | ceph_assert(mdr->more()->witnessed.count(from) == 0); |
31f18b77 | 10432 | if (ack->is_interrupted()) { |
f67539c2 | 10433 | dout(10) << " peer request interrupted, noop" << dendl; |
31f18b77 | 10434 | } else if (ack->witnesses.empty()) { |
7c673cae FG |
10435 | mdr->more()->witnessed.insert(from); |
10436 | if (!ack->is_not_journaled()) | |
f67539c2 | 10437 | mdr->more()->has_journaled_peers = true; |
7c673cae FG |
10438 | } else { |
10439 | dout(10) << " extra witnesses (srcdn replicas) are " << ack->witnesses << dendl; | |
11fdf7f2 | 10440 | mdr->more()->extra_witnesses = ack->witnesses; |
7c673cae FG |
10441 | mdr->more()->extra_witnesses.erase(mds->get_nodeid()); // not me! |
10442 | } | |
10443 | ||
10444 | // srci import? | |
10445 | if (ack->inode_export.length()) { | |
10446 | dout(10) << " got srci import" << dendl; | |
11fdf7f2 | 10447 | mdr->more()->inode_import.share(ack->inode_export); |
7c673cae FG |
10448 | mdr->more()->inode_import_v = ack->inode_export_v; |
10449 | } | |
10450 | ||
10451 | // remove from waiting list | |
f67539c2 TL |
10452 | ceph_assert(mdr->more()->waiting_on_peer.count(from)); |
10453 | mdr->more()->waiting_on_peer.erase(from); | |
7c673cae | 10454 | |
f67539c2 | 10455 | if (mdr->more()->waiting_on_peer.empty()) |
7c673cae FG |
10456 | dispatch_client_request(mdr); // go again! |
10457 | else | |
f67539c2 | 10458 | dout(10) << "still waiting on peers " << mdr->more()->waiting_on_peer << dendl; |
7c673cae FG |
10459 | } |
10460 | ||
f67539c2 | 10461 | void Server::handle_peer_rename_notify_ack(MDRequestRef& mdr, const cref_t<MMDSPeerRequest> &ack) |
7c673cae | 10462 | { |
f67539c2 | 10463 | dout(10) << "handle_peer_rename_notify_ack " << *mdr << " from mds." |
7c673cae | 10464 | << ack->get_source() << dendl; |
f67539c2 | 10465 | ceph_assert(mdr->is_peer()); |
7c673cae FG |
10466 | mds_rank_t from = mds_rank_t(ack->get_source().num()); |
10467 | ||
f67539c2 TL |
10468 | if (mdr->more()->waiting_on_peer.count(from)) { |
10469 | mdr->more()->waiting_on_peer.erase(from); | |
7c673cae | 10470 | |
f67539c2 TL |
10471 | if (mdr->more()->waiting_on_peer.empty()) { |
10472 | if (mdr->peer_request) | |
10473 | dispatch_peer_request(mdr); | |
7c673cae FG |
10474 | } else |
10475 | dout(10) << " still waiting for rename notify acks from " | |
f67539c2 | 10476 | << mdr->more()->waiting_on_peer << dendl; |
7c673cae FG |
10477 | } |
10478 | } | |
10479 | ||
f67539c2 | 10480 | void Server::_peer_rename_sessions_flushed(MDRequestRef& mdr) |
7c673cae | 10481 | { |
f67539c2 | 10482 | dout(10) << "_peer_rename_sessions_flushed " << *mdr << dendl; |
7c673cae | 10483 | |
f67539c2 TL |
10484 | if (mdr->more()->waiting_on_peer.count(MDS_RANK_NONE)) { |
10485 | mdr->more()->waiting_on_peer.erase(MDS_RANK_NONE); | |
7c673cae | 10486 | |
f67539c2 TL |
10487 | if (mdr->more()->waiting_on_peer.empty()) { |
10488 | if (mdr->peer_request) | |
10489 | dispatch_peer_request(mdr); | |
7c673cae FG |
10490 | } else |
10491 | dout(10) << " still waiting for rename notify acks from " | |
f67539c2 | 10492 | << mdr->more()->waiting_on_peer << dendl; |
7c673cae FG |
10493 | } |
10494 | } | |
10495 | ||
10496 | // snaps | |
10497 | /* This function takes responsibility for the passed mdr*/ | |
10498 | void Server::handle_client_lssnap(MDRequestRef& mdr) | |
10499 | { | |
9f95a23c | 10500 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
10501 | |
10502 | // traverse to path | |
9f95a23c TL |
10503 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
10504 | if (!diri) | |
7c673cae | 10505 | return; |
9f95a23c | 10506 | |
7c673cae | 10507 | if (!diri->is_dir()) { |
f67539c2 | 10508 | respond_to_request(mdr, -CEPHFS_ENOTDIR); |
7c673cae FG |
10509 | return; |
10510 | } | |
10511 | dout(10) << "lssnap on " << *diri << dendl; | |
10512 | ||
10513 | // lock snap | |
9f95a23c | 10514 | if (!mds->locker->try_rdlock_snap_layout(diri, mdr)) |
7c673cae FG |
10515 | return; |
10516 | ||
10517 | if (!check_access(mdr, diri, MAY_READ)) | |
10518 | return; | |
10519 | ||
10520 | SnapRealm *realm = diri->find_snaprealm(); | |
11fdf7f2 | 10521 | map<snapid_t,const SnapInfo*> infomap; |
7c673cae FG |
10522 | realm->get_snap_info(infomap, diri->get_oldest_snap()); |
10523 | ||
10524 | unsigned max_entries = req->head.args.readdir.max_entries; | |
10525 | if (!max_entries) | |
10526 | max_entries = infomap.size(); | |
10527 | int max_bytes = req->head.args.readdir.max_bytes; | |
10528 | if (!max_bytes) | |
10529 | // make sure at least one item can be encoded | |
11fdf7f2 | 10530 | max_bytes = (512 << 10) + g_conf()->mds_max_xattr_pairs_size; |
7c673cae FG |
10531 | |
10532 | __u64 last_snapid = 0; | |
10533 | string offset_str = req->get_path2(); | |
10534 | if (!offset_str.empty()) | |
10535 | last_snapid = realm->resolve_snapname(offset_str, diri->ino()); | |
10536 | ||
11fdf7f2 | 10537 | //Empty DirStat |
7c673cae | 10538 | bufferlist dirbl; |
11fdf7f2 TL |
10539 | static DirStat empty; |
10540 | CDir::encode_dirstat(dirbl, mdr->session->info, empty); | |
7c673cae FG |
10541 | |
10542 | max_bytes -= dirbl.length() - sizeof(__u32) + sizeof(__u8) * 2; | |
10543 | ||
10544 | __u32 num = 0; | |
10545 | bufferlist dnbl; | |
11fdf7f2 | 10546 | auto p = infomap.upper_bound(last_snapid); |
7c673cae FG |
10547 | for (; p != infomap.end() && num < max_entries; ++p) { |
10548 | dout(10) << p->first << " -> " << *p->second << dendl; | |
10549 | ||
10550 | // actual | |
10551 | string snap_name; | |
10552 | if (p->second->ino == diri->ino()) | |
11fdf7f2 | 10553 | snap_name = p->second->name; |
7c673cae | 10554 | else |
11fdf7f2 | 10555 | snap_name = p->second->get_long_name(); |
7c673cae FG |
10556 | |
10557 | unsigned start_len = dnbl.length(); | |
10558 | if (int(start_len + snap_name.length() + sizeof(__u32) + sizeof(LeaseStat)) > max_bytes) | |
10559 | break; | |
10560 | ||
11fdf7f2 TL |
10561 | encode(snap_name, dnbl); |
10562 | //infinite lease | |
9f95a23c | 10563 | LeaseStat e(CEPH_LEASE_VALID, -1, 0); |
11fdf7f2 TL |
10564 | mds->locker->encode_lease(dnbl, mdr->session->info, e); |
10565 | dout(20) << "encode_infinite_lease" << dendl; | |
7c673cae FG |
10566 | |
10567 | int r = diri->encode_inodestat(dnbl, mdr->session, realm, p->first, max_bytes - (int)dnbl.length()); | |
10568 | if (r < 0) { | |
10569 | bufferlist keep; | |
10570 | keep.substr_of(dnbl, 0, start_len); | |
10571 | dnbl.swap(keep); | |
10572 | break; | |
10573 | } | |
10574 | ++num; | |
10575 | } | |
10576 | ||
11fdf7f2 | 10577 | encode(num, dirbl); |
7c673cae FG |
10578 | __u16 flags = 0; |
10579 | if (p == infomap.end()) { | |
10580 | flags = CEPH_READDIR_FRAG_END; | |
10581 | if (last_snapid == 0) | |
10582 | flags |= CEPH_READDIR_FRAG_COMPLETE; | |
10583 | } | |
11fdf7f2 | 10584 | encode(flags, dirbl); |
7c673cae FG |
10585 | dirbl.claim_append(dnbl); |
10586 | ||
10587 | mdr->reply_extra_bl = dirbl; | |
10588 | mdr->tracei = diri; | |
10589 | respond_to_request(mdr, 0); | |
10590 | } | |
10591 | ||
10592 | ||
10593 | // MKSNAP | |
10594 | ||
10595 | struct C_MDS_mksnap_finish : public ServerLogContext { | |
10596 | CInode *diri; | |
10597 | SnapInfo info; | |
10598 | C_MDS_mksnap_finish(Server *s, MDRequestRef& r, CInode *di, SnapInfo &i) : | |
10599 | ServerLogContext(s, r), diri(di), info(i) {} | |
10600 | void finish(int r) override { | |
10601 | server->_mksnap_finish(mdr, diri, info); | |
10602 | } | |
10603 | }; | |
10604 | ||
10605 | /* This function takes responsibility for the passed mdr*/ | |
10606 | void Server::handle_client_mksnap(MDRequestRef& mdr) | |
10607 | { | |
9f95a23c | 10608 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 TL |
10609 | // make sure we have as new a map as the client |
10610 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
10611 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
10612 | return; | |
10613 | } | |
7c673cae FG |
10614 | if (!mds->mdsmap->allows_snaps()) { |
10615 | // you can't make snapshots until you set an option right now | |
522d829b | 10616 | dout(5) << "new snapshots are disabled for this fs" << dendl; |
f67539c2 | 10617 | respond_to_request(mdr, -CEPHFS_EPERM); |
7c673cae FG |
10618 | return; |
10619 | } | |
10620 | ||
9f95a23c TL |
10621 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
10622 | if (!diri) | |
7c673cae | 10623 | return; |
7c673cae FG |
10624 | |
10625 | // dir only | |
10626 | if (!diri->is_dir()) { | |
f67539c2 | 10627 | respond_to_request(mdr, -CEPHFS_ENOTDIR); |
7c673cae FG |
10628 | return; |
10629 | } | |
10630 | if (diri->is_system() && !diri->is_root()) { | |
10631 | // no snaps in system dirs (root is ok) | |
522d829b | 10632 | dout(5) << "is an internal system dir" << dendl; |
f67539c2 | 10633 | respond_to_request(mdr, -CEPHFS_EPERM); |
7c673cae FG |
10634 | return; |
10635 | } | |
10636 | ||
11fdf7f2 | 10637 | std::string_view snapname = req->get_filepath().last_dentry(); |
7c673cae | 10638 | |
11fdf7f2 | 10639 | if (mdr->client_request->get_caller_uid() < g_conf()->mds_snap_min_uid || mdr->client_request->get_caller_uid() > g_conf()->mds_snap_max_uid) { |
7c673cae | 10640 | dout(20) << "mksnap " << snapname << " on " << *diri << " denied to uid " << mdr->client_request->get_caller_uid() << dendl; |
f67539c2 | 10641 | respond_to_request(mdr, -CEPHFS_EPERM); |
7c673cae FG |
10642 | return; |
10643 | } | |
10644 | ||
10645 | dout(10) << "mksnap " << snapname << " on " << *diri << dendl; | |
10646 | ||
10647 | // lock snap | |
9f95a23c TL |
10648 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
10649 | MutationImpl::LockOpVec lov; | |
10650 | lov.add_xlock(&diri->snaplock); | |
10651 | if (!mds->locker->acquire_locks(mdr, lov)) | |
10652 | return; | |
7c673cae | 10653 | |
9f95a23c TL |
10654 | if (CDentry *pdn = diri->get_projected_parent_dn(); pdn) { |
10655 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr)) | |
10656 | return; | |
10657 | } | |
10658 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
10659 | } | |
7c673cae | 10660 | |
9f95a23c | 10661 | if (!check_access(mdr, diri, MAY_WRITE|MAY_SNAPSHOT)) |
7c673cae FG |
10662 | return; |
10663 | ||
adb31ebb TL |
10664 | if (inodeno_t subvol_ino = diri->find_snaprealm()->get_subvolume_ino(); |
10665 | (subvol_ino && subvol_ino != diri->ino())) { | |
522d829b | 10666 | dout(5) << "is a descendent of a subvolume dir" << dendl; |
f67539c2 | 10667 | respond_to_request(mdr, -CEPHFS_EPERM); |
adb31ebb TL |
10668 | return; |
10669 | } | |
10670 | ||
9f95a23c TL |
10671 | // check if we can create any more snapshots |
10672 | // we don't allow any more if we are already at or beyond the limit | |
10673 | if (diri->snaprealm && | |
10674 | diri->snaprealm->get_snaps().size() >= max_snaps_per_dir) { | |
f67539c2 | 10675 | respond_to_request(mdr, -CEPHFS_EMLINK); |
7c673cae | 10676 | return; |
9f95a23c | 10677 | } |
7c673cae FG |
10678 | |
10679 | // make sure name is unique | |
10680 | if (diri->snaprealm && | |
10681 | diri->snaprealm->exists(snapname)) { | |
f67539c2 | 10682 | respond_to_request(mdr, -CEPHFS_EEXIST); |
7c673cae FG |
10683 | return; |
10684 | } | |
10685 | if (snapname.length() == 0 || | |
10686 | snapname[0] == '_') { | |
f67539c2 | 10687 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
10688 | return; |
10689 | } | |
10690 | ||
10691 | // allocate a snapid | |
10692 | if (!mdr->more()->stid) { | |
10693 | // prepare an stid | |
10694 | mds->snapclient->prepare_create(diri->ino(), snapname, | |
10695 | mdr->get_mds_stamp(), | |
10696 | &mdr->more()->stid, &mdr->more()->snapidbl, | |
10697 | new C_MDS_RetryRequest(mdcache, mdr)); | |
10698 | return; | |
10699 | } | |
10700 | ||
10701 | version_t stid = mdr->more()->stid; | |
10702 | snapid_t snapid; | |
11fdf7f2 TL |
10703 | auto p = mdr->more()->snapidbl.cbegin(); |
10704 | decode(snapid, p); | |
7c673cae FG |
10705 | dout(10) << " stid " << stid << " snapid " << snapid << dendl; |
10706 | ||
11fdf7f2 TL |
10707 | ceph_assert(mds->snapclient->get_cached_version() >= stid); |
10708 | ||
f67539c2 TL |
10709 | SnapPayload payload; |
10710 | if (req->get_data().length()) { | |
10711 | try { | |
10712 | auto iter = req->get_data().cbegin(); | |
10713 | decode(payload, iter); | |
10714 | } catch (const ceph::buffer::error &e) { | |
10715 | // backward compat -- client sends xattr bufferlist. however, | |
10716 | // that is not used anywhere -- so (log and) ignore. | |
10717 | dout(20) << ": no metadata in payload (old client?)" << dendl; | |
10718 | } | |
10719 | } | |
10720 | ||
7c673cae FG |
10721 | // journal |
10722 | SnapInfo info; | |
10723 | info.ino = diri->ino(); | |
10724 | info.snapid = snapid; | |
11fdf7f2 | 10725 | info.name = snapname; |
7c673cae | 10726 | info.stamp = mdr->get_op_stamp(); |
f67539c2 | 10727 | info.metadata = payload.metadata; |
7c673cae | 10728 | |
f67539c2 TL |
10729 | auto pi = diri->project_inode(mdr, false, true); |
10730 | pi.inode->ctime = info.stamp; | |
10731 | if (info.stamp > pi.inode->rstat.rctime) | |
10732 | pi.inode->rstat.rctime = info.stamp; | |
10733 | pi.inode->rstat.rsnaps++; | |
10734 | pi.inode->version = diri->pre_dirty(); | |
7c673cae FG |
10735 | |
10736 | // project the snaprealm | |
94b18763 FG |
10737 | auto &newsnap = *pi.snapnode; |
10738 | newsnap.created = snapid; | |
10739 | auto em = newsnap.snaps.emplace(std::piecewise_construct, std::forward_as_tuple(snapid), std::forward_as_tuple(info)); | |
10740 | if (!em.second) | |
10741 | em.first->second = info; | |
10742 | newsnap.seq = snapid; | |
10743 | newsnap.last_created = snapid; | |
7c673cae FG |
10744 | |
10745 | // journal the inode changes | |
10746 | mdr->ls = mdlog->get_current_segment(); | |
10747 | EUpdate *le = new EUpdate(mdlog, "mksnap"); | |
10748 | mdlog->start_entry(le); | |
10749 | ||
10750 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
10751 | le->metablob.add_table_transaction(TABLE_SNAP, stid); | |
10752 | mdcache->predirty_journal_parents(mdr, &le->metablob, diri, 0, PREDIRTY_PRIMARY, false); | |
10753 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, diri); | |
10754 | ||
10755 | // journal the snaprealm changes | |
10756 | submit_mdlog_entry(le, new C_MDS_mksnap_finish(this, mdr, diri, info), | |
10757 | mdr, __func__); | |
10758 | mdlog->flush(); | |
10759 | } | |
10760 | ||
10761 | void Server::_mksnap_finish(MDRequestRef& mdr, CInode *diri, SnapInfo &info) | |
10762 | { | |
10763 | dout(10) << "_mksnap_finish " << *mdr << " " << info << dendl; | |
10764 | ||
10765 | int op = (diri->snaprealm? CEPH_SNAP_OP_CREATE : CEPH_SNAP_OP_SPLIT); | |
10766 | ||
7c673cae FG |
10767 | mdr->apply(); |
10768 | ||
10769 | mds->snapclient->commit(mdr->more()->stid, mdr->ls); | |
10770 | ||
10771 | // create snap | |
10772 | dout(10) << "snaprealm now " << *diri->snaprealm << dendl; | |
10773 | ||
11fdf7f2 TL |
10774 | // notify other mds |
10775 | mdcache->send_snap_update(diri, mdr->more()->stid, op); | |
10776 | ||
7c673cae FG |
10777 | mdcache->do_realm_invalidate_and_update_notify(diri, op); |
10778 | ||
10779 | // yay | |
10780 | mdr->in[0] = diri; | |
10781 | mdr->snapid = info.snapid; | |
10782 | mdr->tracei = diri; | |
10783 | respond_to_request(mdr, 0); | |
10784 | } | |
10785 | ||
10786 | ||
10787 | // RMSNAP | |
10788 | ||
10789 | struct C_MDS_rmsnap_finish : public ServerLogContext { | |
10790 | CInode *diri; | |
10791 | snapid_t snapid; | |
10792 | C_MDS_rmsnap_finish(Server *s, MDRequestRef& r, CInode *di, snapid_t sn) : | |
10793 | ServerLogContext(s, r), diri(di), snapid(sn) {} | |
10794 | void finish(int r) override { | |
10795 | server->_rmsnap_finish(mdr, diri, snapid); | |
10796 | } | |
10797 | }; | |
10798 | ||
10799 | /* This function takes responsibility for the passed mdr*/ | |
10800 | void Server::handle_client_rmsnap(MDRequestRef& mdr) | |
10801 | { | |
9f95a23c | 10802 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 10803 | |
9f95a23c TL |
10804 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
10805 | if (!diri) | |
7c673cae | 10806 | return; |
9f95a23c | 10807 | |
7c673cae | 10808 | if (!diri->is_dir()) { |
f67539c2 | 10809 | respond_to_request(mdr, -CEPHFS_ENOTDIR); |
7c673cae FG |
10810 | return; |
10811 | } | |
10812 | ||
11fdf7f2 | 10813 | std::string_view snapname = req->get_filepath().last_dentry(); |
7c673cae | 10814 | |
11fdf7f2 | 10815 | if (mdr->client_request->get_caller_uid() < g_conf()->mds_snap_min_uid || mdr->client_request->get_caller_uid() > g_conf()->mds_snap_max_uid) { |
7c673cae | 10816 | dout(20) << "rmsnap " << snapname << " on " << *diri << " denied to uid " << mdr->client_request->get_caller_uid() << dendl; |
f67539c2 | 10817 | respond_to_request(mdr, -CEPHFS_EPERM); |
7c673cae FG |
10818 | return; |
10819 | } | |
10820 | ||
10821 | dout(10) << "rmsnap " << snapname << " on " << *diri << dendl; | |
10822 | ||
10823 | // does snap exist? | |
10824 | if (snapname.length() == 0 || snapname[0] == '_') { | |
f67539c2 | 10825 | respond_to_request(mdr, -CEPHFS_EINVAL); // can't prune a parent snap, currently. |
7c673cae FG |
10826 | return; |
10827 | } | |
10828 | if (!diri->snaprealm || !diri->snaprealm->exists(snapname)) { | |
f67539c2 | 10829 | respond_to_request(mdr, -CEPHFS_ENOENT); |
7c673cae FG |
10830 | return; |
10831 | } | |
10832 | snapid_t snapid = diri->snaprealm->resolve_snapname(snapname, diri->ino()); | |
10833 | dout(10) << " snapname " << snapname << " is " << snapid << dendl; | |
10834 | ||
9f95a23c TL |
10835 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
10836 | MutationImpl::LockOpVec lov; | |
10837 | lov.add_xlock(&diri->snaplock); | |
10838 | if (!mds->locker->acquire_locks(mdr, lov)) | |
10839 | return; | |
10840 | if (CDentry *pdn = diri->get_projected_parent_dn(); pdn) { | |
10841 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr)) | |
10842 | return; | |
10843 | } | |
10844 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
10845 | } | |
7c673cae | 10846 | |
11fdf7f2 | 10847 | if (!check_access(mdr, diri, MAY_WRITE|MAY_SNAPSHOT)) |
7c673cae FG |
10848 | return; |
10849 | ||
10850 | // prepare | |
10851 | if (!mdr->more()->stid) { | |
10852 | mds->snapclient->prepare_destroy(diri->ino(), snapid, | |
10853 | &mdr->more()->stid, &mdr->more()->snapidbl, | |
10854 | new C_MDS_RetryRequest(mdcache, mdr)); | |
10855 | return; | |
10856 | } | |
10857 | version_t stid = mdr->more()->stid; | |
11fdf7f2 | 10858 | auto p = mdr->more()->snapidbl.cbegin(); |
7c673cae | 10859 | snapid_t seq; |
11fdf7f2 | 10860 | decode(seq, p); |
7c673cae FG |
10861 | dout(10) << " stid is " << stid << ", seq is " << seq << dendl; |
10862 | ||
11fdf7f2 TL |
10863 | ceph_assert(mds->snapclient->get_cached_version() >= stid); |
10864 | ||
7c673cae | 10865 | // journal |
f67539c2 TL |
10866 | auto pi = diri->project_inode(mdr, false, true); |
10867 | pi.inode->version = diri->pre_dirty(); | |
10868 | pi.inode->ctime = mdr->get_op_stamp(); | |
10869 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
10870 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
10871 | pi.inode->rstat.rsnaps--; | |
7c673cae FG |
10872 | |
10873 | mdr->ls = mdlog->get_current_segment(); | |
10874 | EUpdate *le = new EUpdate(mdlog, "rmsnap"); | |
10875 | mdlog->start_entry(le); | |
10876 | ||
10877 | // project the snaprealm | |
94b18763 FG |
10878 | auto &newnode = *pi.snapnode; |
10879 | newnode.snaps.erase(snapid); | |
10880 | newnode.seq = seq; | |
10881 | newnode.last_destroyed = seq; | |
7c673cae FG |
10882 | |
10883 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
10884 | le->metablob.add_table_transaction(TABLE_SNAP, stid); | |
10885 | mdcache->predirty_journal_parents(mdr, &le->metablob, diri, 0, PREDIRTY_PRIMARY, false); | |
10886 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, diri); | |
10887 | ||
10888 | submit_mdlog_entry(le, new C_MDS_rmsnap_finish(this, mdr, diri, snapid), | |
10889 | mdr, __func__); | |
10890 | mdlog->flush(); | |
10891 | } | |
10892 | ||
10893 | void Server::_rmsnap_finish(MDRequestRef& mdr, CInode *diri, snapid_t snapid) | |
10894 | { | |
10895 | dout(10) << "_rmsnap_finish " << *mdr << " " << snapid << dendl; | |
10896 | snapid_t stid = mdr->more()->stid; | |
11fdf7f2 | 10897 | auto p = mdr->more()->snapidbl.cbegin(); |
7c673cae | 10898 | snapid_t seq; |
11fdf7f2 | 10899 | decode(seq, p); |
7c673cae | 10900 | |
7c673cae FG |
10901 | mdr->apply(); |
10902 | ||
10903 | mds->snapclient->commit(stid, mdr->ls); | |
10904 | ||
10905 | dout(10) << "snaprealm now " << *diri->snaprealm << dendl; | |
10906 | ||
11fdf7f2 TL |
10907 | // notify other mds |
10908 | mdcache->send_snap_update(diri, mdr->more()->stid, CEPH_SNAP_OP_DESTROY); | |
10909 | ||
7c673cae FG |
10910 | mdcache->do_realm_invalidate_and_update_notify(diri, CEPH_SNAP_OP_DESTROY); |
10911 | ||
10912 | // yay | |
10913 | mdr->in[0] = diri; | |
10914 | respond_to_request(mdr, 0); | |
10915 | ||
10916 | // purge snapshot data | |
f67539c2 | 10917 | diri->purge_stale_snap_data(diri->snaprealm->get_snaps()); |
7c673cae FG |
10918 | } |
10919 | ||
10920 | struct C_MDS_renamesnap_finish : public ServerLogContext { | |
10921 | CInode *diri; | |
10922 | snapid_t snapid; | |
10923 | C_MDS_renamesnap_finish(Server *s, MDRequestRef& r, CInode *di, snapid_t sn) : | |
10924 | ServerLogContext(s, r), diri(di), snapid(sn) {} | |
10925 | void finish(int r) override { | |
10926 | server->_renamesnap_finish(mdr, diri, snapid); | |
10927 | } | |
10928 | }; | |
10929 | ||
10930 | /* This function takes responsibility for the passed mdr*/ | |
10931 | void Server::handle_client_renamesnap(MDRequestRef& mdr) | |
10932 | { | |
9f95a23c | 10933 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 10934 | if (req->get_filepath().get_ino() != req->get_filepath2().get_ino()) { |
f67539c2 | 10935 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
10936 | return; |
10937 | } | |
10938 | ||
9f95a23c TL |
10939 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
10940 | if (!diri) | |
7c673cae | 10941 | return; |
7c673cae FG |
10942 | |
10943 | if (!diri->is_dir()) { // dir only | |
f67539c2 | 10944 | respond_to_request(mdr, -CEPHFS_ENOTDIR); |
7c673cae FG |
10945 | return; |
10946 | } | |
10947 | ||
11fdf7f2 TL |
10948 | if (mdr->client_request->get_caller_uid() < g_conf()->mds_snap_min_uid || |
10949 | mdr->client_request->get_caller_uid() > g_conf()->mds_snap_max_uid) { | |
f67539c2 | 10950 | respond_to_request(mdr, -CEPHFS_EPERM); |
7c673cae FG |
10951 | return; |
10952 | } | |
10953 | ||
11fdf7f2 TL |
10954 | std::string_view dstname = req->get_filepath().last_dentry(); |
10955 | std::string_view srcname = req->get_filepath2().last_dentry(); | |
7c673cae FG |
10956 | dout(10) << "renamesnap " << srcname << "->" << dstname << " on " << *diri << dendl; |
10957 | ||
10958 | if (srcname.length() == 0 || srcname[0] == '_') { | |
f67539c2 | 10959 | respond_to_request(mdr, -CEPHFS_EINVAL); // can't rename a parent snap. |
7c673cae FG |
10960 | return; |
10961 | } | |
10962 | if (!diri->snaprealm || !diri->snaprealm->exists(srcname)) { | |
f67539c2 | 10963 | respond_to_request(mdr, -CEPHFS_ENOENT); |
7c673cae FG |
10964 | return; |
10965 | } | |
10966 | if (dstname.length() == 0 || dstname[0] == '_') { | |
f67539c2 | 10967 | respond_to_request(mdr, -CEPHFS_EINVAL); |
7c673cae FG |
10968 | return; |
10969 | } | |
10970 | if (diri->snaprealm->exists(dstname)) { | |
f67539c2 | 10971 | respond_to_request(mdr, -CEPHFS_EEXIST); |
7c673cae FG |
10972 | return; |
10973 | } | |
10974 | ||
10975 | snapid_t snapid = diri->snaprealm->resolve_snapname(srcname, diri->ino()); | |
10976 | dout(10) << " snapname " << srcname << " is " << snapid << dendl; | |
10977 | ||
10978 | // lock snap | |
9f95a23c TL |
10979 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
10980 | MutationImpl::LockOpVec lov; | |
10981 | lov.add_xlock(&diri->snaplock); | |
10982 | if (!mds->locker->acquire_locks(mdr, lov)) | |
10983 | return; | |
10984 | if (CDentry *pdn = diri->get_projected_parent_dn(); pdn) { | |
10985 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr)) | |
10986 | return; | |
10987 | } | |
10988 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
10989 | } | |
7c673cae | 10990 | |
11fdf7f2 | 10991 | if (!check_access(mdr, diri, MAY_WRITE|MAY_SNAPSHOT)) |
7c673cae FG |
10992 | return; |
10993 | ||
10994 | // prepare | |
10995 | if (!mdr->more()->stid) { | |
10996 | mds->snapclient->prepare_update(diri->ino(), snapid, dstname, utime_t(), | |
11fdf7f2 | 10997 | &mdr->more()->stid, |
7c673cae FG |
10998 | new C_MDS_RetryRequest(mdcache, mdr)); |
10999 | return; | |
11000 | } | |
11001 | ||
11002 | version_t stid = mdr->more()->stid; | |
11fdf7f2 TL |
11003 | dout(10) << " stid is " << stid << dendl; |
11004 | ||
11005 | ceph_assert(mds->snapclient->get_cached_version() >= stid); | |
7c673cae FG |
11006 | |
11007 | // journal | |
f67539c2 TL |
11008 | auto pi = diri->project_inode(mdr, false, true); |
11009 | pi.inode->ctime = mdr->get_op_stamp(); | |
11010 | if (mdr->get_op_stamp() > pi.inode->rstat.rctime) | |
11011 | pi.inode->rstat.rctime = mdr->get_op_stamp(); | |
11012 | pi.inode->version = diri->pre_dirty(); | |
7c673cae FG |
11013 | |
11014 | // project the snaprealm | |
94b18763 FG |
11015 | auto &newsnap = *pi.snapnode; |
11016 | auto it = newsnap.snaps.find(snapid); | |
11fdf7f2 TL |
11017 | ceph_assert(it != newsnap.snaps.end()); |
11018 | it->second.name = dstname; | |
7c673cae FG |
11019 | |
11020 | // journal the inode changes | |
11021 | mdr->ls = mdlog->get_current_segment(); | |
11022 | EUpdate *le = new EUpdate(mdlog, "renamesnap"); | |
11023 | mdlog->start_entry(le); | |
11024 | ||
11025 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
11026 | le->metablob.add_table_transaction(TABLE_SNAP, stid); | |
11027 | mdcache->predirty_journal_parents(mdr, &le->metablob, diri, 0, PREDIRTY_PRIMARY, false); | |
11028 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, diri); | |
11029 | ||
11030 | // journal the snaprealm changes | |
11031 | submit_mdlog_entry(le, new C_MDS_renamesnap_finish(this, mdr, diri, snapid), | |
11032 | mdr, __func__); | |
11033 | mdlog->flush(); | |
11034 | } | |
11035 | ||
11036 | void Server::_renamesnap_finish(MDRequestRef& mdr, CInode *diri, snapid_t snapid) | |
11037 | { | |
11038 | dout(10) << "_renamesnap_finish " << *mdr << " " << snapid << dendl; | |
11039 | ||
7c673cae FG |
11040 | mdr->apply(); |
11041 | ||
11042 | mds->snapclient->commit(mdr->more()->stid, mdr->ls); | |
11043 | ||
11044 | dout(10) << "snaprealm now " << *diri->snaprealm << dendl; | |
11045 | ||
11fdf7f2 TL |
11046 | // notify other mds |
11047 | mdcache->send_snap_update(diri, mdr->more()->stid, CEPH_SNAP_OP_UPDATE); | |
11048 | ||
11049 | mdcache->do_realm_invalidate_and_update_notify(diri, CEPH_SNAP_OP_UPDATE); | |
7c673cae FG |
11050 | |
11051 | // yay | |
11052 | mdr->in[0] = diri; | |
11053 | mdr->tracei = diri; | |
11054 | mdr->snapid = snapid; | |
11055 | respond_to_request(mdr, 0); | |
11056 | } | |
11057 | ||
11058 | /** | |
11059 | * Return true if server is in state RECONNECT and this | |
11060 | * client has not yet reconnected. | |
11061 | */ | |
11062 | bool Server::waiting_for_reconnect(client_t c) const | |
11063 | { | |
11064 | return client_reconnect_gather.count(c) > 0; | |
11065 | } | |
11066 | ||
11067 | void Server::dump_reconnect_status(Formatter *f) const | |
11068 | { | |
11069 | f->open_object_section("reconnect_status"); | |
11070 | f->dump_stream("client_reconnect_gather") << client_reconnect_gather; | |
11071 | f->close_section(); | |
11072 | } |