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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" | |
11fdf7f2 | 32 | #include "cephfs_features.h" |
7c673cae FG |
33 | |
34 | #include "msg/Messenger.h" | |
35 | ||
36 | #include "osdc/Objecter.h" | |
37 | ||
7c673cae FG |
38 | #include "events/EUpdate.h" |
39 | #include "events/ESlaveUpdate.h" | |
40 | #include "events/ESession.h" | |
41 | #include "events/EOpen.h" | |
42 | #include "events/ECommitted.h" | |
9f95a23c | 43 | #include "events/EPurged.h" |
7c673cae | 44 | |
11fdf7f2 | 45 | #include "include/stringify.h" |
7c673cae FG |
46 | #include "include/filepath.h" |
47 | #include "common/errno.h" | |
48 | #include "common/Timer.h" | |
49 | #include "common/perf_counters.h" | |
50 | #include "include/compat.h" | |
51 | #include "osd/OSDMap.h" | |
52 | ||
53 | #include <errno.h> | |
a8e16298 | 54 | #include <math.h> |
7c673cae FG |
55 | |
56 | #include <list> | |
57 | #include <iostream> | |
11fdf7f2 | 58 | #include <string_view> |
7c673cae FG |
59 | |
60 | #include "common/config.h" | |
61 | ||
62 | #define dout_context g_ceph_context | |
63 | #define dout_subsys ceph_subsys_mds | |
64 | #undef dout_prefix | |
65 | #define dout_prefix *_dout << "mds." << mds->get_nodeid() << ".server " | |
66 | ||
11fdf7f2 | 67 | class ServerContext : public MDSContext { |
7c673cae FG |
68 | protected: |
69 | Server *server; | |
70 | MDSRank *get_mds() override | |
71 | { | |
72 | return server->mds; | |
73 | } | |
74 | ||
75 | public: | |
76 | explicit ServerContext(Server *s) : server(s) { | |
11fdf7f2 | 77 | ceph_assert(server != NULL); |
7c673cae FG |
78 | } |
79 | }; | |
80 | ||
9f95a23c TL |
81 | class Batch_Getattr_Lookup : public BatchOp { |
82 | protected: | |
83 | Server* server; | |
84 | ceph::ref_t<MDRequestImpl> mdr; | |
f91f0fd5 | 85 | std::vector<ceph::ref_t<MDRequestImpl>> batch_reqs; |
9f95a23c TL |
86 | int res = 0; |
87 | public: | |
f91f0fd5 TL |
88 | Batch_Getattr_Lookup(Server* s, const ceph::ref_t<MDRequestImpl>& r) |
89 | : server(s), mdr(r) { | |
90 | if (mdr->client_request->get_op() == CEPH_MDS_OP_LOOKUP) | |
91 | mdr->batch_op_map = &mdr->dn[0].back()->batch_ops; | |
92 | else | |
93 | mdr->batch_op_map = &mdr->in[0]->batch_ops; | |
94 | } | |
95 | void add_request(const ceph::ref_t<MDRequestImpl>& r) override { | |
96 | batch_reqs.push_back(r); | |
9f95a23c | 97 | } |
f91f0fd5 TL |
98 | ceph::ref_t<MDRequestImpl> find_new_head() override { |
99 | while (!batch_reqs.empty()) { | |
100 | auto r = std::move(batch_reqs.back()); | |
101 | batch_reqs.pop_back(); | |
102 | if (r->killed) | |
103 | continue; | |
104 | ||
105 | r->batch_op_map = mdr->batch_op_map; | |
106 | mdr->batch_op_map = nullptr; | |
107 | mdr = r; | |
108 | return mdr; | |
109 | } | |
110 | return nullptr; | |
9f95a23c TL |
111 | } |
112 | void _forward(mds_rank_t t) override { | |
f91f0fd5 | 113 | MDCache* mdcache = server->mdcache; |
9f95a23c TL |
114 | mdcache->mds->forward_message_mds(mdr->release_client_request(), t); |
115 | mdr->set_mds_stamp(ceph_clock_now()); | |
f91f0fd5 | 116 | for (auto& m : batch_reqs) { |
9f95a23c TL |
117 | if (!m->killed) |
118 | mdcache->request_forward(m, t); | |
119 | } | |
f91f0fd5 | 120 | batch_reqs.clear(); |
9f95a23c TL |
121 | } |
122 | void _respond(int r) override { | |
123 | mdr->set_mds_stamp(ceph_clock_now()); | |
f91f0fd5 | 124 | for (auto& m : batch_reqs) { |
9f95a23c TL |
125 | if (!m->killed) { |
126 | m->tracei = mdr->tracei; | |
127 | m->tracedn = mdr->tracedn; | |
128 | server->respond_to_request(m, r); | |
129 | } | |
130 | } | |
f91f0fd5 | 131 | batch_reqs.clear(); |
9f95a23c TL |
132 | server->reply_client_request(mdr, make_message<MClientReply>(*mdr->client_request, r)); |
133 | } | |
134 | void print(std::ostream& o) { | |
135 | o << "[batch front=" << *mdr << "]"; | |
136 | } | |
137 | }; | |
138 | ||
7c673cae FG |
139 | class ServerLogContext : public MDSLogContextBase { |
140 | protected: | |
141 | Server *server; | |
142 | MDSRank *get_mds() override | |
143 | { | |
144 | return server->mds; | |
145 | } | |
146 | ||
147 | MDRequestRef mdr; | |
148 | void pre_finish(int r) override { | |
149 | if (mdr) | |
150 | mdr->mark_event("journal_committed: "); | |
151 | } | |
152 | public: | |
153 | explicit ServerLogContext(Server *s) : server(s) { | |
11fdf7f2 | 154 | ceph_assert(server != NULL); |
7c673cae FG |
155 | } |
156 | explicit ServerLogContext(Server *s, MDRequestRef& r) : server(s), mdr(r) { | |
11fdf7f2 | 157 | ceph_assert(server != NULL); |
7c673cae FG |
158 | } |
159 | }; | |
160 | ||
161 | void Server::create_logger() | |
162 | { | |
163 | PerfCountersBuilder plb(g_ceph_context, "mds_server", l_mdss_first, l_mdss_last); | |
91327a77 AA |
164 | |
165 | plb.add_u64_counter(l_mdss_handle_client_request, "handle_client_request", | |
166 | "Client requests", "hcr", PerfCountersBuilder::PRIO_INTERESTING); | |
7c673cae | 167 | plb.add_u64_counter(l_mdss_handle_slave_request, "handle_slave_request", |
91327a77 AA |
168 | "Slave requests", "hsr", PerfCountersBuilder::PRIO_INTERESTING); |
169 | plb.add_u64_counter(l_mdss_handle_client_session, | |
170 | "handle_client_session", "Client session messages", "hcs", | |
171 | PerfCountersBuilder::PRIO_INTERESTING); | |
11fdf7f2 TL |
172 | plb.add_u64_counter(l_mdss_cap_revoke_eviction, "cap_revoke_eviction", |
173 | "Cap Revoke Client Eviction", "cre", PerfCountersBuilder::PRIO_INTERESTING); | |
adb31ebb TL |
174 | plb.add_u64_counter(l_mdss_cap_acquisition_throttle, |
175 | "cap_acquisition_throttle", "Cap acquisition throttle counter", "cat", | |
176 | PerfCountersBuilder::PRIO_INTERESTING); | |
91327a77 AA |
177 | |
178 | // fop latencies are useful | |
179 | plb.set_prio_default(PerfCountersBuilder::PRIO_USEFUL); | |
180 | plb.add_time_avg(l_mdss_req_lookuphash_latency, "req_lookuphash_latency", | |
181 | "Request type lookup hash of inode latency"); | |
182 | plb.add_time_avg(l_mdss_req_lookupino_latency, "req_lookupino_latency", | |
183 | "Request type lookup inode latency"); | |
184 | plb.add_time_avg(l_mdss_req_lookupparent_latency, "req_lookupparent_latency", | |
185 | "Request type lookup parent latency"); | |
186 | plb.add_time_avg(l_mdss_req_lookupname_latency, "req_lookupname_latency", | |
187 | "Request type lookup name latency"); | |
188 | plb.add_time_avg(l_mdss_req_lookup_latency, "req_lookup_latency", | |
189 | "Request type lookup latency"); | |
190 | plb.add_time_avg(l_mdss_req_lookupsnap_latency, "req_lookupsnap_latency", | |
191 | "Request type lookup snapshot latency"); | |
192 | plb.add_time_avg(l_mdss_req_getattr_latency, "req_getattr_latency", | |
193 | "Request type get attribute latency"); | |
194 | plb.add_time_avg(l_mdss_req_setattr_latency, "req_setattr_latency", | |
195 | "Request type set attribute latency"); | |
196 | plb.add_time_avg(l_mdss_req_setlayout_latency, "req_setlayout_latency", | |
197 | "Request type set file layout latency"); | |
198 | plb.add_time_avg(l_mdss_req_setdirlayout_latency, "req_setdirlayout_latency", | |
199 | "Request type set directory layout latency"); | |
200 | plb.add_time_avg(l_mdss_req_setxattr_latency, "req_setxattr_latency", | |
201 | "Request type set extended attribute latency"); | |
202 | plb.add_time_avg(l_mdss_req_rmxattr_latency, "req_rmxattr_latency", | |
203 | "Request type remove extended attribute latency"); | |
204 | plb.add_time_avg(l_mdss_req_readdir_latency, "req_readdir_latency", | |
205 | "Request type read directory latency"); | |
206 | plb.add_time_avg(l_mdss_req_setfilelock_latency, "req_setfilelock_latency", | |
207 | "Request type set file lock latency"); | |
208 | plb.add_time_avg(l_mdss_req_getfilelock_latency, "req_getfilelock_latency", | |
209 | "Request type get file lock latency"); | |
210 | plb.add_time_avg(l_mdss_req_create_latency, "req_create_latency", | |
211 | "Request type create latency"); | |
212 | plb.add_time_avg(l_mdss_req_open_latency, "req_open_latency", | |
213 | "Request type open latency"); | |
214 | plb.add_time_avg(l_mdss_req_mknod_latency, "req_mknod_latency", | |
215 | "Request type make node latency"); | |
216 | plb.add_time_avg(l_mdss_req_link_latency, "req_link_latency", | |
217 | "Request type link latency"); | |
218 | plb.add_time_avg(l_mdss_req_unlink_latency, "req_unlink_latency", | |
219 | "Request type unlink latency"); | |
220 | plb.add_time_avg(l_mdss_req_rmdir_latency, "req_rmdir_latency", | |
221 | "Request type remove directory latency"); | |
222 | plb.add_time_avg(l_mdss_req_rename_latency, "req_rename_latency", | |
223 | "Request type rename latency"); | |
224 | plb.add_time_avg(l_mdss_req_mkdir_latency, "req_mkdir_latency", | |
225 | "Request type make directory latency"); | |
226 | plb.add_time_avg(l_mdss_req_symlink_latency, "req_symlink_latency", | |
227 | "Request type symbolic link latency"); | |
228 | plb.add_time_avg(l_mdss_req_lssnap_latency, "req_lssnap_latency", | |
229 | "Request type list snapshot latency"); | |
230 | plb.add_time_avg(l_mdss_req_mksnap_latency, "req_mksnap_latency", | |
231 | "Request type make snapshot latency"); | |
232 | plb.add_time_avg(l_mdss_req_rmsnap_latency, "req_rmsnap_latency", | |
233 | "Request type remove snapshot latency"); | |
234 | plb.add_time_avg(l_mdss_req_renamesnap_latency, "req_renamesnap_latency", | |
235 | "Request type rename snapshot latency"); | |
236 | ||
91327a77 AA |
237 | plb.set_prio_default(PerfCountersBuilder::PRIO_DEBUGONLY); |
238 | plb.add_u64_counter(l_mdss_dispatch_client_request, "dispatch_client_request", | |
239 | "Client requests dispatched"); | |
240 | plb.add_u64_counter(l_mdss_dispatch_slave_request, "dispatch_server_request", | |
241 | "Server requests dispatched"); | |
242 | ||
7c673cae FG |
243 | logger = plb.create_perf_counters(); |
244 | g_ceph_context->get_perfcounters_collection()->add(logger); | |
245 | } | |
246 | ||
247 | Server::Server(MDSRank *m) : | |
248 | mds(m), | |
249 | mdcache(mds->mdcache), mdlog(mds->mdlog), | |
11fdf7f2 | 250 | recall_throttle(g_conf().get_val<double>("mds_recall_max_decay_rate")) |
7c673cae | 251 | { |
f91f0fd5 | 252 | forward_all_requests_to_auth = g_conf().get_val<bool>("mds_forward_all_requests_to_auth"); |
92f5a8d4 | 253 | replay_unsafe_with_closed_session = g_conf().get_val<bool>("mds_replay_unsafe_with_closed_session"); |
81eedcae | 254 | cap_revoke_eviction_timeout = g_conf().get_val<double>("mds_cap_revoke_eviction_timeout"); |
9f95a23c TL |
255 | max_snaps_per_dir = g_conf().get_val<uint64_t>("mds_max_snaps_per_dir"); |
256 | delegate_inos_pct = g_conf().get_val<uint64_t>("mds_client_delegate_inos_pct"); | |
adb31ebb TL |
257 | max_caps_per_client = g_conf().get_val<uint64_t>("mds_max_caps_per_client"); |
258 | cap_acquisition_throttle = g_conf().get_val<uint64_t>("mds_session_cap_acquisition_throttle"); | |
259 | max_caps_throttle_ratio = g_conf().get_val<double>("mds_session_max_caps_throttle_ratio"); | |
260 | caps_throttle_retry_request_timeout = g_conf().get_val<double>("mds_cap_acquisition_throttle_retry_request_timeout"); | |
11fdf7f2 | 261 | supported_features = feature_bitset_t(CEPHFS_FEATURES_MDS_SUPPORTED); |
7c673cae FG |
262 | } |
263 | ||
9f95a23c | 264 | void Server::dispatch(const cref_t<Message> &m) |
7c673cae FG |
265 | { |
266 | switch (m->get_type()) { | |
267 | case CEPH_MSG_CLIENT_RECONNECT: | |
9f95a23c | 268 | handle_client_reconnect(ref_cast<MClientReconnect>(m)); |
7c673cae FG |
269 | return; |
270 | } | |
271 | ||
92f5a8d4 TL |
272 | /* |
273 | *In reconnect phase, client sent unsafe requests to mds before reconnect msg. Seting sessionclosed_isok will handle scenario like this: | |
274 | ||
275 | 1. In reconnect phase, client sent unsafe requests to mds. | |
276 | 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. | |
277 | (Another situation is #31668, which will deny all client reconnect msg to speed up reboot). | |
278 | 3.So these unsafe request from session without sending reconnect msg in time or being denied could be handled in clientreplay phase. | |
279 | ||
280 | */ | |
281 | bool sessionclosed_isok = replay_unsafe_with_closed_session; | |
7c673cae | 282 | // active? |
94b18763 FG |
283 | // handle_slave_request()/handle_client_session() will wait if necessary |
284 | if (m->get_type() == CEPH_MSG_CLIENT_REQUEST && !mds->is_active()) { | |
9f95a23c | 285 | const auto &req = ref_cast<MClientRequest>(m); |
94b18763 FG |
286 | if (mds->is_reconnect() || mds->get_want_state() == CEPH_MDS_STATE_RECONNECT) { |
287 | Session *session = mds->get_session(req); | |
92f5a8d4 | 288 | if (!session || (!session->is_open() && !sessionclosed_isok)) { |
7c673cae | 289 | dout(5) << "session is closed, dropping " << req->get_reqid() << dendl; |
7c673cae FG |
290 | return; |
291 | } | |
292 | bool queue_replay = false; | |
9f95a23c | 293 | if (req->is_replay() || req->is_async()) { |
7c673cae FG |
294 | dout(3) << "queuing replayed op" << dendl; |
295 | queue_replay = true; | |
11fdf7f2 TL |
296 | if (req->head.ino && |
297 | !session->have_completed_request(req->get_reqid().tid, nullptr)) { | |
298 | mdcache->add_replay_ino_alloc(inodeno_t(req->head.ino)); | |
299 | } | |
7c673cae FG |
300 | } else if (req->get_retry_attempt()) { |
301 | // process completed request in clientreplay stage. The completed request | |
302 | // might have created new file/directorie. This guarantees MDS sends a reply | |
303 | // to client before other request modifies the new file/directorie. | |
304 | if (session->have_completed_request(req->get_reqid().tid, NULL)) { | |
305 | dout(3) << "queuing completed op" << dendl; | |
306 | queue_replay = true; | |
307 | } | |
308 | // this request was created before the cap reconnect message, drop any embedded | |
309 | // cap releases. | |
310 | req->releases.clear(); | |
311 | } | |
312 | if (queue_replay) { | |
313 | req->mark_queued_for_replay(); | |
314 | mds->enqueue_replay(new C_MDS_RetryMessage(mds, m)); | |
315 | return; | |
316 | } | |
317 | } | |
318 | ||
319 | bool wait_for_active = true; | |
94b18763 | 320 | if (mds->is_stopping()) { |
28e407b8 | 321 | wait_for_active = false; |
7c673cae | 322 | } else if (mds->is_clientreplay()) { |
94b18763 | 323 | if (req->is_queued_for_replay()) { |
7c673cae | 324 | wait_for_active = false; |
7c673cae FG |
325 | } |
326 | } | |
327 | if (wait_for_active) { | |
328 | dout(3) << "not active yet, waiting" << dendl; | |
329 | mds->wait_for_active(new C_MDS_RetryMessage(mds, m)); | |
330 | return; | |
331 | } | |
332 | } | |
333 | ||
334 | switch (m->get_type()) { | |
335 | case CEPH_MSG_CLIENT_SESSION: | |
9f95a23c | 336 | handle_client_session(ref_cast<MClientSession>(m)); |
7c673cae FG |
337 | return; |
338 | case CEPH_MSG_CLIENT_REQUEST: | |
9f95a23c | 339 | handle_client_request(ref_cast<MClientRequest>(m)); |
11fdf7f2 TL |
340 | return; |
341 | case CEPH_MSG_CLIENT_RECLAIM: | |
9f95a23c | 342 | handle_client_reclaim(ref_cast<MClientReclaim>(m)); |
7c673cae FG |
343 | return; |
344 | case MSG_MDS_SLAVE_REQUEST: | |
9f95a23c | 345 | handle_slave_request(ref_cast<MMDSSlaveRequest>(m)); |
7c673cae FG |
346 | return; |
347 | default: | |
348 | derr << "server unknown message " << m->get_type() << dendl; | |
11fdf7f2 | 349 | ceph_abort_msg("server unknown message"); |
7c673cae FG |
350 | } |
351 | } | |
352 | ||
353 | ||
354 | ||
355 | // ---------------------------------------------------------- | |
356 | // SESSION management | |
357 | ||
358 | class C_MDS_session_finish : public ServerLogContext { | |
359 | Session *session; | |
360 | uint64_t state_seq; | |
361 | bool open; | |
362 | version_t cmapv; | |
363 | interval_set<inodeno_t> inos; | |
364 | version_t inotablev; | |
9f95a23c TL |
365 | interval_set<inodeno_t> purge_inos; |
366 | LogSegment *ls = nullptr; | |
7c673cae FG |
367 | Context *fin; |
368 | public: | |
369 | C_MDS_session_finish(Server *srv, Session *se, uint64_t sseq, bool s, version_t mv, Context *fin_ = NULL) : | |
370 | ServerLogContext(srv), session(se), state_seq(sseq), open(s), cmapv(mv), inotablev(0), fin(fin_) { } | |
9f95a23c TL |
371 | C_MDS_session_finish(Server *srv, Session *se, uint64_t sseq, bool s, version_t mv, interval_set<inodeno_t> i, version_t iv, Context *fin_ = NULL) : |
372 | ServerLogContext(srv), session(se), state_seq(sseq), open(s), cmapv(mv), inos(std::move(i)), inotablev(iv), fin(fin_) { } | |
373 | C_MDS_session_finish(Server *srv, Session *se, uint64_t sseq, bool s, version_t mv, interval_set<inodeno_t> i, version_t iv, | |
374 | interval_set<inodeno_t> _purge_inos, LogSegment *_ls, Context *fin_ = NULL) : | |
375 | ServerLogContext(srv), session(se), state_seq(sseq), open(s), cmapv(mv), inos(std::move(i)), inotablev(iv), purge_inos(std::move(_purge_inos)), ls(_ls), fin(fin_){} | |
7c673cae | 376 | void finish(int r) override { |
11fdf7f2 | 377 | ceph_assert(r == 0); |
9f95a23c | 378 | server->_session_logged(session, state_seq, open, cmapv, inos, inotablev, purge_inos, ls); |
7c673cae FG |
379 | if (fin) { |
380 | fin->complete(r); | |
381 | } | |
382 | } | |
383 | }; | |
384 | ||
11fdf7f2 TL |
385 | Session* Server::find_session_by_uuid(std::string_view uuid) |
386 | { | |
387 | Session* session = nullptr; | |
388 | for (auto& it : mds->sessionmap.get_sessions()) { | |
389 | auto& metadata = it.second->info.client_metadata; | |
390 | ||
391 | auto p = metadata.find("uuid"); | |
392 | if (p == metadata.end() || p->second != uuid) | |
393 | continue; | |
394 | ||
395 | if (!session) { | |
396 | session = it.second; | |
397 | } else if (!session->reclaiming_from) { | |
398 | assert(it.second->reclaiming_from == session); | |
399 | session = it.second; | |
400 | } else { | |
401 | assert(session->reclaiming_from == it.second); | |
402 | } | |
403 | } | |
404 | return session; | |
405 | } | |
406 | ||
9f95a23c | 407 | void Server::reclaim_session(Session *session, const cref_t<MClientReclaim> &m) |
11fdf7f2 TL |
408 | { |
409 | if (!session->is_open() && !session->is_stale()) { | |
410 | dout(10) << "session not open, dropping this req" << dendl; | |
411 | return; | |
412 | } | |
413 | ||
9f95a23c | 414 | auto reply = make_message<MClientReclaimReply>(0); |
11fdf7f2 TL |
415 | if (m->get_uuid().empty()) { |
416 | dout(10) << __func__ << " invalid message (no uuid)" << dendl; | |
417 | reply->set_result(-EINVAL); | |
418 | mds->send_message_client(reply, session); | |
419 | return; | |
420 | } | |
421 | ||
422 | unsigned flags = m->get_flags(); | |
423 | if (flags != CEPH_RECLAIM_RESET) { // currently only support reset | |
424 | dout(10) << __func__ << " unsupported flags" << dendl; | |
425 | reply->set_result(-EOPNOTSUPP); | |
426 | mds->send_message_client(reply, session); | |
427 | return; | |
428 | } | |
429 | ||
430 | Session* target = find_session_by_uuid(m->get_uuid()); | |
431 | if (target) { | |
432 | if (session->info.auth_name != target->info.auth_name) { | |
433 | dout(10) << __func__ << " session auth_name " << session->info.auth_name | |
434 | << " != target auth_name " << target->info.auth_name << dendl; | |
435 | reply->set_result(-EPERM); | |
436 | mds->send_message_client(reply, session); | |
437 | } | |
438 | ||
439 | assert(!target->reclaiming_from); | |
440 | assert(!session->reclaiming_from); | |
441 | session->reclaiming_from = target; | |
442 | reply->set_addrs(entity_addrvec_t(target->info.inst.addr)); | |
443 | } | |
444 | ||
445 | if (flags & CEPH_RECLAIM_RESET) { | |
446 | finish_reclaim_session(session, reply); | |
447 | return; | |
448 | } | |
449 | ||
450 | ceph_abort(); | |
451 | } | |
452 | ||
9f95a23c | 453 | void Server::finish_reclaim_session(Session *session, const ref_t<MClientReclaimReply> &reply) |
11fdf7f2 TL |
454 | { |
455 | Session *target = session->reclaiming_from; | |
456 | if (target) { | |
457 | session->reclaiming_from = nullptr; | |
458 | ||
459 | Context *send_reply; | |
460 | if (reply) { | |
461 | int64_t session_id = session->get_client().v; | |
9f95a23c TL |
462 | send_reply = new LambdaContext([this, session_id, reply](int r) { |
463 | assert(ceph_mutex_is_locked_by_me(mds->mds_lock)); | |
11fdf7f2 TL |
464 | Session *session = mds->sessionmap.get_session(entity_name_t::CLIENT(session_id)); |
465 | if (!session) { | |
466 | return; | |
467 | } | |
468 | auto epoch = mds->objecter->with_osdmap([](const OSDMap &map){ return map.get_epoch(); }); | |
469 | reply->set_epoch(epoch); | |
470 | mds->send_message_client(reply, session); | |
471 | }); | |
472 | } else { | |
473 | send_reply = nullptr; | |
474 | } | |
475 | ||
476 | bool blacklisted = mds->objecter->with_osdmap([target](const OSDMap &map) { | |
477 | return map.is_blacklisted(target->info.inst.addr); | |
478 | }); | |
479 | ||
480 | if (blacklisted || !g_conf()->mds_session_blacklist_on_evict) { | |
481 | kill_session(target, send_reply); | |
482 | } else { | |
483 | std::stringstream ss; | |
484 | mds->evict_client(target->get_client().v, false, true, ss, send_reply); | |
485 | } | |
486 | } else if (reply) { | |
487 | mds->send_message_client(reply, session); | |
488 | } | |
489 | } | |
490 | ||
9f95a23c | 491 | void Server::handle_client_reclaim(const cref_t<MClientReclaim> &m) |
11fdf7f2 TL |
492 | { |
493 | Session *session = mds->get_session(m); | |
494 | dout(3) << __func__ << " " << *m << " from " << m->get_source() << dendl; | |
495 | assert(m->get_source().is_client()); // should _not_ come from an mds! | |
496 | ||
497 | if (!session) { | |
498 | dout(0) << " ignoring sessionless msg " << *m << dendl; | |
499 | return; | |
500 | } | |
501 | ||
502 | if (mds->get_state() < MDSMap::STATE_CLIENTREPLAY) { | |
503 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
504 | return; | |
505 | } | |
506 | ||
507 | if (m->get_flags() & MClientReclaim::FLAG_FINISH) { | |
508 | finish_reclaim_session(session); | |
509 | } else { | |
510 | reclaim_session(session, m); | |
511 | } | |
512 | } | |
513 | ||
9f95a23c | 514 | void Server::handle_client_session(const cref_t<MClientSession> &m) |
7c673cae FG |
515 | { |
516 | version_t pv; | |
94b18763 | 517 | Session *session = mds->get_session(m); |
7c673cae FG |
518 | |
519 | dout(3) << "handle_client_session " << *m << " from " << m->get_source() << dendl; | |
11fdf7f2 | 520 | ceph_assert(m->get_source().is_client()); // should _not_ come from an mds! |
7c673cae FG |
521 | |
522 | if (!session) { | |
523 | dout(0) << " ignoring sessionless msg " << *m << dendl; | |
9f95a23c | 524 | auto reply = make_message<MClientSession>(CEPH_SESSION_REJECT); |
92f5a8d4 TL |
525 | reply->metadata["error_string"] = "sessionless"; |
526 | mds->send_message(reply, m->get_connection()); | |
7c673cae FG |
527 | return; |
528 | } | |
529 | ||
94b18763 FG |
530 | if (m->get_op() == CEPH_SESSION_REQUEST_RENEWCAPS) { |
531 | // always handle renewcaps (state >= MDSMap::STATE_RECONNECT) | |
532 | } else if (m->get_op() == CEPH_SESSION_REQUEST_CLOSE) { | |
533 | // close requests need to be handled when mds is active | |
534 | if (mds->get_state() < MDSMap::STATE_ACTIVE) { | |
535 | mds->wait_for_active(new C_MDS_RetryMessage(mds, m)); | |
536 | return; | |
537 | } | |
538 | } else { | |
539 | if (mds->get_state() < MDSMap::STATE_CLIENTREPLAY) { | |
540 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
541 | return; | |
542 | } | |
543 | } | |
544 | ||
7c673cae FG |
545 | if (logger) |
546 | logger->inc(l_mdss_handle_client_session); | |
547 | ||
548 | uint64_t sseq = 0; | |
549 | switch (m->get_op()) { | |
550 | case CEPH_SESSION_REQUEST_OPEN: | |
551 | if (session->is_opening() || | |
552 | session->is_open() || | |
553 | session->is_stale() || | |
28e407b8 AA |
554 | session->is_killing() || |
555 | terminating_sessions) { | |
7c673cae | 556 | dout(10) << "currently open|opening|stale|killing, dropping this req" << dendl; |
7c673cae FG |
557 | return; |
558 | } | |
11fdf7f2 | 559 | ceph_assert(session->is_closed() || session->is_closing()); |
7c673cae | 560 | |
b32b8144 FG |
561 | if (mds->is_stopping()) { |
562 | dout(10) << "mds is stopping, dropping open req" << dendl; | |
b32b8144 FG |
563 | return; |
564 | } | |
565 | ||
a8e16298 TL |
566 | { |
567 | auto& addr = session->info.inst.addr; | |
9f95a23c | 568 | session->set_client_metadata(client_metadata_t(m->metadata, m->supported_features, m->metric_spec)); |
a8e16298 TL |
569 | auto& client_metadata = session->info.client_metadata; |
570 | ||
11fdf7f2 | 571 | auto log_session_status = [this, m, session](std::string_view status, std::string_view err) { |
a8e16298 TL |
572 | auto now = ceph_clock_now(); |
573 | auto throttle_elapsed = m->get_recv_complete_stamp() - m->get_throttle_stamp(); | |
574 | auto elapsed = now - m->get_recv_stamp(); | |
11fdf7f2 TL |
575 | CachedStackStringStream css; |
576 | *css << "New client session:" | |
a8e16298 TL |
577 | << " addr=\"" << session->info.inst.addr << "\"" |
578 | << ",elapsed=" << elapsed | |
579 | << ",throttled=" << throttle_elapsed | |
580 | << ",status=\"" << status << "\""; | |
581 | if (!err.empty()) { | |
11fdf7f2 | 582 | *css << ",error=\"" << err << "\""; |
a8e16298 TL |
583 | } |
584 | const auto& metadata = session->info.client_metadata; | |
11fdf7f2 TL |
585 | if (auto it = metadata.find("root"); it != metadata.end()) { |
586 | *css << ",root=\"" << it->second << "\""; | |
a8e16298 | 587 | } |
11fdf7f2 TL |
588 | dout(2) << css->strv() << dendl; |
589 | }; | |
590 | ||
591 | auto send_reject_message = [this, &session, &log_session_status](std::string_view err_str) { | |
9f95a23c | 592 | auto m = make_message<MClientSession>(CEPH_SESSION_REJECT); |
11fdf7f2 TL |
593 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) |
594 | m->metadata["error_string"] = err_str; | |
595 | mds->send_message_client(m, session); | |
596 | log_session_status("REJECTED", err_str); | |
a8e16298 | 597 | }; |
7c673cae | 598 | |
11fdf7f2 TL |
599 | bool blacklisted = mds->objecter->with_osdmap( |
600 | [&addr](const OSDMap &osd_map) -> bool { | |
601 | return osd_map.is_blacklisted(addr); | |
602 | }); | |
603 | ||
a8e16298 | 604 | if (blacklisted) { |
11fdf7f2 TL |
605 | dout(10) << "rejecting blacklisted client " << addr << dendl; |
606 | send_reject_message("blacklisted"); | |
607 | session->clear(); | |
608 | break; | |
7c673cae | 609 | } |
7c673cae | 610 | |
11fdf7f2 TL |
611 | if (client_metadata.features.empty()) |
612 | infer_supported_features(session, client_metadata); | |
613 | ||
614 | dout(20) << __func__ << " CEPH_SESSION_REQUEST_OPEN metadata entries:" << dendl; | |
9f95a23c TL |
615 | dout(20) << " features: '" << client_metadata.features << "'" << dendl; |
616 | dout(20) << " metric specification: [" << client_metadata.metric_spec << "]" << dendl; | |
11fdf7f2 TL |
617 | for (const auto& p : client_metadata) { |
618 | dout(20) << " " << p.first << ": " << p.second << dendl; | |
619 | } | |
620 | ||
621 | feature_bitset_t missing_features = required_client_features; | |
622 | missing_features -= client_metadata.features; | |
623 | if (!missing_features.empty()) { | |
624 | stringstream ss; | |
625 | ss << "missing required features '" << missing_features << "'"; | |
626 | send_reject_message(ss.str()); | |
92f5a8d4 TL |
627 | mds->clog->warn() << "client session (" << session->info.inst |
628 | << ") lacks required features " << missing_features | |
629 | << "; client supports " << client_metadata.features; | |
11fdf7f2 TL |
630 | session->clear(); |
631 | break; | |
a8e16298 | 632 | } |
7c673cae | 633 | |
a8e16298 TL |
634 | // Special case for the 'root' metadata path; validate that the claimed |
635 | // root is actually within the caps of the session | |
11fdf7f2 TL |
636 | if (auto it = client_metadata.find("root"); it != client_metadata.end()) { |
637 | auto claimed_root = it->second; | |
638 | stringstream ss; | |
639 | bool denied = false; | |
640 | // claimed_root has a leading "/" which we strip before passing | |
641 | // into caps check | |
642 | if (claimed_root.empty() || claimed_root[0] != '/') { | |
643 | denied = true; | |
644 | ss << "invalue root '" << claimed_root << "'"; | |
645 | } else if (!session->auth_caps.path_capable(claimed_root.substr(1))) { | |
646 | denied = true; | |
647 | ss << "non-allowable root '" << claimed_root << "'"; | |
648 | } | |
649 | ||
650 | if (denied) { | |
651 | // Tell the client we're rejecting their open | |
652 | send_reject_message(ss.str()); | |
653 | mds->clog->warn() << "client session with " << ss.str() | |
654 | << " denied (" << session->info.inst << ")"; | |
655 | session->clear(); | |
656 | break; | |
657 | } | |
658 | } | |
659 | ||
660 | if (auto it = client_metadata.find("uuid"); it != client_metadata.end()) { | |
661 | if (find_session_by_uuid(it->second)) { | |
662 | send_reject_message("duplicated session uuid"); | |
663 | mds->clog->warn() << "client session with duplicated session uuid '" | |
664 | << it->second << "' denied (" << session->info.inst << ")"; | |
665 | session->clear(); | |
666 | break; | |
667 | } | |
a8e16298 TL |
668 | } |
669 | ||
670 | if (session->is_closed()) | |
11fdf7f2 | 671 | mds->sessionmap.add_session(session); |
a8e16298 TL |
672 | |
673 | pv = mds->sessionmap.mark_projected(session); | |
674 | sseq = mds->sessionmap.set_state(session, Session::STATE_OPENING); | |
675 | mds->sessionmap.touch_session(session); | |
9f95a23c | 676 | auto fin = new LambdaContext([log_session_status = std::move(log_session_status)](int r){ |
11fdf7f2 | 677 | ceph_assert(r == 0); |
a8e16298 TL |
678 | log_session_status("ACCEPTED", ""); |
679 | }); | |
680 | mdlog->start_submit_entry(new ESession(m->get_source_inst(), true, pv, client_metadata), | |
681 | new C_MDS_session_finish(this, session, sseq, true, pv, fin)); | |
11fdf7f2 | 682 | mdlog->flush(); |
a8e16298 | 683 | } |
7c673cae FG |
684 | break; |
685 | ||
686 | case CEPH_SESSION_REQUEST_RENEWCAPS: | |
11fdf7f2 | 687 | if (session->is_open() || session->is_stale()) { |
7c673cae FG |
688 | mds->sessionmap.touch_session(session); |
689 | if (session->is_stale()) { | |
690 | mds->sessionmap.set_state(session, Session::STATE_OPEN); | |
691 | mds->locker->resume_stale_caps(session); | |
692 | mds->sessionmap.touch_session(session); | |
693 | } | |
9f95a23c | 694 | auto reply = make_message<MClientSession>(CEPH_SESSION_RENEWCAPS, m->get_seq()); |
11fdf7f2 | 695 | mds->send_message_client(reply, session); |
7c673cae FG |
696 | } else { |
697 | dout(10) << "ignoring renewcaps on non open|stale session (" << session->get_state_name() << ")" << dendl; | |
698 | } | |
699 | break; | |
700 | ||
701 | case CEPH_SESSION_REQUEST_CLOSE: | |
702 | { | |
703 | if (session->is_closed() || | |
704 | session->is_closing() || | |
705 | session->is_killing()) { | |
706 | dout(10) << "already closed|closing|killing, dropping this req" << dendl; | |
7c673cae FG |
707 | return; |
708 | } | |
709 | if (session->is_importing()) { | |
710 | dout(10) << "ignoring close req on importing session" << dendl; | |
7c673cae FG |
711 | return; |
712 | } | |
11fdf7f2 | 713 | ceph_assert(session->is_open() || |
7c673cae FG |
714 | session->is_stale() || |
715 | session->is_opening()); | |
716 | if (m->get_seq() < session->get_push_seq()) { | |
717 | dout(10) << "old push seq " << m->get_seq() << " < " << session->get_push_seq() | |
718 | << ", dropping" << dendl; | |
7c673cae FG |
719 | return; |
720 | } | |
721 | // We are getting a seq that is higher than expected. | |
722 | // Handle the same as any other seqn error. | |
723 | // | |
724 | if (m->get_seq() != session->get_push_seq()) { | |
725 | dout(0) << "old push seq " << m->get_seq() << " != " << session->get_push_seq() | |
726 | << ", BUGGY!" << dendl; | |
727 | mds->clog->warn() << "incorrect push seq " << m->get_seq() << " != " | |
728 | << session->get_push_seq() << ", dropping" << " from client : " << session->get_human_name(); | |
7c673cae FG |
729 | return; |
730 | } | |
731 | journal_close_session(session, Session::STATE_CLOSING, NULL); | |
732 | } | |
733 | break; | |
734 | ||
735 | case CEPH_SESSION_FLUSHMSG_ACK: | |
736 | finish_flush_session(session, m->get_seq()); | |
737 | break; | |
738 | ||
31f18b77 | 739 | case CEPH_SESSION_REQUEST_FLUSH_MDLOG: |
b32b8144 FG |
740 | if (mds->is_active()) |
741 | mdlog->flush(); | |
31f18b77 FG |
742 | break; |
743 | ||
7c673cae FG |
744 | default: |
745 | ceph_abort(); | |
746 | } | |
7c673cae FG |
747 | } |
748 | ||
f91f0fd5 | 749 | void Server::flush_session(Session *session, MDSGatherBuilder& gather) { |
f64942e4 | 750 | if (!session->is_open() || |
11fdf7f2 TL |
751 | !session->get_connection() || |
752 | !session->get_connection()->has_feature(CEPH_FEATURE_EXPORT_PEER)) { | |
f64942e4 AA |
753 | return; |
754 | } | |
755 | ||
f91f0fd5 | 756 | version_t seq = session->wait_for_flush(gather.new_sub()); |
11fdf7f2 | 757 | mds->send_message_client( |
9f95a23c | 758 | make_message<MClientSession>(CEPH_SESSION_FLUSHMSG, seq), session); |
f64942e4 AA |
759 | } |
760 | ||
7c673cae FG |
761 | void Server::flush_client_sessions(set<client_t>& client_set, MDSGatherBuilder& gather) |
762 | { | |
f91f0fd5 TL |
763 | for (const auto& client : client_set) { |
764 | Session *session = mds->sessionmap.get_session(entity_name_t::CLIENT(client.v)); | |
11fdf7f2 | 765 | ceph_assert(session); |
f91f0fd5 | 766 | flush_session(session, gather); |
7c673cae FG |
767 | } |
768 | } | |
769 | ||
770 | void Server::finish_flush_session(Session *session, version_t seq) | |
771 | { | |
11fdf7f2 | 772 | MDSContext::vec finished; |
7c673cae FG |
773 | session->finish_flush(seq, finished); |
774 | mds->queue_waiters(finished); | |
775 | } | |
776 | ||
777 | void Server::_session_logged(Session *session, uint64_t state_seq, bool open, version_t pv, | |
9f95a23c TL |
778 | const interval_set<inodeno_t>& inos, version_t piv, |
779 | const interval_set<inodeno_t>& purge_inos, LogSegment *ls) | |
7c673cae | 780 | { |
9f95a23c TL |
781 | dout(10) << "_session_logged " << session->info.inst |
782 | << " state_seq " << state_seq | |
783 | << " " << (open ? "open":"close") | |
784 | << " " << pv | |
785 | << " purge_inos : " << purge_inos << dendl; | |
786 | ||
787 | if (NULL != ls) { | |
788 | dout(10) << "_session_logged seq : " << ls->seq << dendl; | |
789 | if (purge_inos.size()){ | |
790 | ls->purge_inodes.insert(purge_inos); | |
791 | mdcache->purge_inodes(purge_inos, ls); | |
792 | } | |
793 | } | |
794 | ||
7c673cae | 795 | if (piv) { |
11fdf7f2 | 796 | ceph_assert(session->is_closing() || session->is_killing() || |
7c673cae FG |
797 | session->is_opening()); // re-open closing session |
798 | session->info.prealloc_inos.subtract(inos); | |
9f95a23c | 799 | session->delegated_inos.clear(); |
7c673cae | 800 | mds->inotable->apply_release_ids(inos); |
11fdf7f2 | 801 | ceph_assert(mds->inotable->get_version() == piv); |
7c673cae FG |
802 | } |
803 | ||
804 | mds->sessionmap.mark_dirty(session); | |
805 | ||
806 | // apply | |
807 | if (session->get_state_seq() != state_seq) { | |
808 | dout(10) << " journaled state_seq " << state_seq << " != current " << session->get_state_seq() | |
809 | << ", noop" << dendl; | |
810 | // close must have been canceled (by an import?), or any number of other things.. | |
811 | } else if (open) { | |
11fdf7f2 | 812 | ceph_assert(session->is_opening()); |
7c673cae FG |
813 | mds->sessionmap.set_state(session, Session::STATE_OPEN); |
814 | mds->sessionmap.touch_session(session); | |
11fdf7f2 | 815 | ceph_assert(session->get_connection()); |
9f95a23c | 816 | auto reply = make_message<MClientSession>(CEPH_SESSION_OPEN); |
11fdf7f2 TL |
817 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) |
818 | reply->supported_features = supported_features; | |
819 | mds->send_message_client(reply, session); | |
820 | if (mdcache->is_readonly()) { | |
9f95a23c | 821 | auto m = make_message<MClientSession>(CEPH_SESSION_FORCE_RO); |
11fdf7f2 TL |
822 | mds->send_message_client(m, session); |
823 | } | |
7c673cae FG |
824 | } else if (session->is_closing() || |
825 | session->is_killing()) { | |
826 | // kill any lingering capabilities, leases, requests | |
f91f0fd5 | 827 | bool killing = session->is_killing(); |
7c673cae FG |
828 | while (!session->caps.empty()) { |
829 | Capability *cap = session->caps.front(); | |
830 | CInode *in = cap->get_inode(); | |
831 | dout(20) << " killing capability " << ccap_string(cap->issued()) << " on " << *in << dendl; | |
f91f0fd5 | 832 | mds->locker->remove_client_cap(in, cap, killing); |
7c673cae FG |
833 | } |
834 | while (!session->leases.empty()) { | |
835 | ClientLease *r = session->leases.front(); | |
836 | CDentry *dn = static_cast<CDentry*>(r->parent); | |
837 | dout(20) << " killing client lease of " << *dn << dendl; | |
838 | dn->remove_client_lease(r, mds->locker); | |
839 | } | |
11fdf7f2 | 840 | if (client_reconnect_gather.erase(session->info.get_client())) { |
7c673cae | 841 | dout(20) << " removing client from reconnect set" << dendl; |
7c673cae FG |
842 | if (client_reconnect_gather.empty()) { |
843 | dout(7) << " client " << session->info.inst << " was last reconnect, finishing" << dendl; | |
844 | reconnect_gather_finish(); | |
845 | } | |
846 | } | |
11fdf7f2 TL |
847 | if (client_reclaim_gather.erase(session->info.get_client())) { |
848 | dout(20) << " removing client from reclaim set" << dendl; | |
849 | if (client_reclaim_gather.empty()) { | |
850 | dout(7) << " client " << session->info.inst << " was last reclaimed, finishing" << dendl; | |
851 | mds->maybe_clientreplay_done(); | |
852 | } | |
853 | } | |
7c673cae FG |
854 | |
855 | if (session->is_closing()) { | |
856 | // mark con disposable. if there is a fault, we will get a | |
857 | // reset and clean it up. if the client hasn't received the | |
858 | // CLOSE message yet, they will reconnect and get an | |
859 | // ms_handle_remote_reset() and realize they had in fact closed. | |
860 | // do this *before* sending the message to avoid a possible | |
861 | // race. | |
11fdf7f2 | 862 | if (session->get_connection()) { |
7c673cae FG |
863 | // Conditional because terminate_sessions will indiscrimately |
864 | // put sessions in CLOSING whether they ever had a conn or not. | |
11fdf7f2 | 865 | session->get_connection()->mark_disposable(); |
7c673cae FG |
866 | } |
867 | ||
868 | // reset session | |
9f95a23c | 869 | mds->send_message_client(make_message<MClientSession>(CEPH_SESSION_CLOSE), session); |
7c673cae FG |
870 | mds->sessionmap.set_state(session, Session::STATE_CLOSED); |
871 | session->clear(); | |
872 | mds->sessionmap.remove_session(session); | |
873 | } else if (session->is_killing()) { | |
874 | // destroy session, close connection | |
11fdf7f2 | 875 | if (session->get_connection()) { |
92f5a8d4 TL |
876 | session->get_connection()->mark_down(); |
877 | mds->sessionmap.set_state(session, Session::STATE_CLOSED); | |
878 | session->set_connection(nullptr); | |
7c673cae FG |
879 | } |
880 | mds->sessionmap.remove_session(session); | |
881 | } else { | |
882 | ceph_abort(); | |
883 | } | |
884 | } else { | |
885 | ceph_abort(); | |
886 | } | |
887 | } | |
888 | ||
889 | /** | |
890 | * Inject sessions from some source other than actual connections. | |
891 | * | |
892 | * For example: | |
893 | * - sessions inferred from journal replay | |
894 | * - sessions learned from other MDSs during rejoin | |
895 | * - sessions learned from other MDSs during dir/caps migration | |
896 | * - sessions learned from other MDSs during a cross-MDS rename | |
897 | */ | |
898 | version_t Server::prepare_force_open_sessions(map<client_t,entity_inst_t>& cm, | |
11fdf7f2 | 899 | map<client_t,client_metadata_t>& cmm, |
28e407b8 | 900 | map<client_t, pair<Session*,uint64_t> >& smap) |
7c673cae FG |
901 | { |
902 | version_t pv = mds->sessionmap.get_projected(); | |
903 | ||
904 | dout(10) << "prepare_force_open_sessions " << pv | |
905 | << " on " << cm.size() << " clients" | |
906 | << dendl; | |
7c673cae | 907 | |
28e407b8 | 908 | mds->objecter->with_osdmap( |
11fdf7f2 | 909 | [this, &cm, &cmm](const OSDMap &osd_map) { |
28e407b8 AA |
910 | for (auto p = cm.begin(); p != cm.end(); ) { |
911 | if (osd_map.is_blacklisted(p->second.addr)) { | |
912 | dout(10) << " ignoring blacklisted client." << p->first | |
913 | << " (" << p->second.addr << ")" << dendl; | |
11fdf7f2 | 914 | cmm.erase(p->first); |
28e407b8 AA |
915 | cm.erase(p++); |
916 | } else { | |
917 | ++p; | |
918 | } | |
919 | } | |
920 | }); | |
921 | ||
922 | for (map<client_t,entity_inst_t>::iterator p = cm.begin(); p != cm.end(); ++p) { | |
7c673cae FG |
923 | Session *session = mds->sessionmap.get_or_add_session(p->second); |
924 | pv = mds->sessionmap.mark_projected(session); | |
28e407b8 | 925 | uint64_t sseq; |
7c673cae FG |
926 | if (session->is_closed() || |
927 | session->is_closing() || | |
28e407b8 AA |
928 | session->is_killing()) { |
929 | sseq = mds->sessionmap.set_state(session, Session::STATE_OPENING); | |
11fdf7f2 TL |
930 | auto q = cmm.find(p->first); |
931 | if (q != cmm.end()) | |
932 | session->info.client_metadata.merge(q->second); | |
28e407b8 | 933 | } else { |
11fdf7f2 | 934 | ceph_assert(session->is_open() || |
7c673cae FG |
935 | session->is_opening() || |
936 | session->is_stale()); | |
28e407b8 AA |
937 | sseq = 0; |
938 | } | |
939 | smap[p->first] = make_pair(session, sseq); | |
7c673cae FG |
940 | session->inc_importing(); |
941 | } | |
942 | return pv; | |
943 | } | |
944 | ||
28e407b8 | 945 | void Server::finish_force_open_sessions(const map<client_t,pair<Session*,uint64_t> >& smap, |
7c673cae FG |
946 | bool dec_import) |
947 | { | |
948 | /* | |
949 | * FIXME: need to carefully consider the race conditions between a | |
950 | * client trying to close a session and an MDS doing an import | |
951 | * trying to force open a session... | |
952 | */ | |
28e407b8 | 953 | dout(10) << "finish_force_open_sessions on " << smap.size() << " clients," |
7c673cae | 954 | << " initial v " << mds->sessionmap.get_version() << dendl; |
7c673cae | 955 | |
28e407b8 AA |
956 | for (auto &it : smap) { |
957 | Session *session = it.second.first; | |
958 | uint64_t sseq = it.second.second; | |
959 | if (sseq > 0) { | |
7c673cae FG |
960 | if (session->get_state_seq() != sseq) { |
961 | dout(10) << "force_open_sessions skipping changed " << session->info.inst << dendl; | |
962 | } else { | |
963 | dout(10) << "force_open_sessions opened " << session->info.inst << dendl; | |
964 | mds->sessionmap.set_state(session, Session::STATE_OPEN); | |
965 | mds->sessionmap.touch_session(session); | |
11fdf7f2 | 966 | |
9f95a23c | 967 | auto reply = make_message<MClientSession>(CEPH_SESSION_OPEN); |
11fdf7f2 TL |
968 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) |
969 | reply->supported_features = supported_features; | |
970 | mds->send_message_client(reply, session); | |
971 | ||
7c673cae | 972 | if (mdcache->is_readonly()) |
9f95a23c | 973 | mds->send_message_client(make_message<MClientSession>(CEPH_SESSION_FORCE_RO), session); |
7c673cae FG |
974 | } |
975 | } else { | |
976 | dout(10) << "force_open_sessions skipping already-open " << session->info.inst << dendl; | |
11fdf7f2 | 977 | ceph_assert(session->is_open() || session->is_stale()); |
7c673cae FG |
978 | } |
979 | ||
980 | if (dec_import) { | |
981 | session->dec_importing(); | |
982 | } | |
983 | ||
984 | mds->sessionmap.mark_dirty(session); | |
985 | } | |
986 | ||
987 | dout(10) << __func__ << ": final v " << mds->sessionmap.get_version() << dendl; | |
988 | } | |
989 | ||
990 | class C_MDS_TerminatedSessions : public ServerContext { | |
991 | void finish(int r) override { | |
992 | server->terminating_sessions = false; | |
993 | } | |
994 | public: | |
995 | explicit C_MDS_TerminatedSessions(Server *s) : ServerContext(s) {} | |
996 | }; | |
997 | ||
998 | void Server::terminate_sessions() | |
999 | { | |
a8e16298 | 1000 | dout(5) << "terminating all sessions..." << dendl; |
7c673cae FG |
1001 | |
1002 | terminating_sessions = true; | |
1003 | ||
1004 | // kill them off. clients will retry etc. | |
1005 | set<Session*> sessions; | |
1006 | mds->sessionmap.get_client_session_set(sessions); | |
1007 | for (set<Session*>::const_iterator p = sessions.begin(); | |
1008 | p != sessions.end(); | |
1009 | ++p) { | |
1010 | Session *session = *p; | |
1011 | if (session->is_closing() || | |
1012 | session->is_killing() || | |
1013 | session->is_closed()) | |
1014 | continue; | |
1015 | journal_close_session(session, Session::STATE_CLOSING, NULL); | |
1016 | } | |
1017 | ||
1018 | mdlog->wait_for_safe(new C_MDS_TerminatedSessions(this)); | |
1019 | } | |
1020 | ||
1021 | ||
1022 | void Server::find_idle_sessions() | |
1023 | { | |
91327a77 AA |
1024 | auto now = clock::now(); |
1025 | auto last_cleared_laggy = mds->last_cleared_laggy(); | |
1026 | ||
1027 | dout(10) << "find_idle_sessions. last cleared laggy state " << last_cleared_laggy << "s ago" << dendl; | |
7c673cae FG |
1028 | |
1029 | // timeout/stale | |
1030 | // (caps go stale, lease die) | |
91327a77 AA |
1031 | double queue_max_age = mds->get_dispatch_queue_max_age(ceph_clock_now()); |
1032 | double cutoff = queue_max_age + mds->mdsmap->get_session_timeout(); | |
f64942e4 | 1033 | |
494da23a TL |
1034 | // don't kick clients if we've been laggy |
1035 | if (last_cleared_laggy < cutoff) { | |
1036 | dout(10) << " last cleared laggy " << last_cleared_laggy << "s ago (< cutoff " << cutoff | |
1037 | << "), not marking any client stale" << dendl; | |
1038 | return; | |
1039 | } | |
1040 | ||
11fdf7f2 TL |
1041 | std::vector<Session*> to_evict; |
1042 | ||
494da23a | 1043 | bool defer_session_stale = g_conf().get_val<bool>("mds_defer_session_stale"); |
f64942e4 AA |
1044 | const auto sessions_p1 = mds->sessionmap.by_state.find(Session::STATE_OPEN); |
1045 | if (sessions_p1 != mds->sessionmap.by_state.end() && !sessions_p1->second->empty()) { | |
1046 | std::vector<Session*> new_stale; | |
1047 | ||
1048 | for (auto session : *(sessions_p1->second)) { | |
1049 | auto last_cap_renew_span = std::chrono::duration<double>(now - session->last_cap_renew).count(); | |
1050 | if (last_cap_renew_span < cutoff) { | |
1051 | dout(20) << "laggiest active session is " << session->info.inst | |
1052 | << " and renewed caps recently (" << last_cap_renew_span << "s ago)" << dendl; | |
1053 | break; | |
1054 | } | |
1055 | ||
1056 | if (session->last_seen > session->last_cap_renew) { | |
1057 | last_cap_renew_span = std::chrono::duration<double>(now - session->last_seen).count(); | |
1058 | if (last_cap_renew_span < cutoff) { | |
1059 | dout(20) << "laggiest active session is " << session->info.inst | |
1060 | << " and renewed caps recently (" << last_cap_renew_span << "s ago)" << dendl; | |
1061 | continue; | |
1062 | } | |
1063 | } | |
1064 | ||
494da23a TL |
1065 | if (last_cap_renew_span >= mds->mdsmap->get_session_autoclose()) { |
1066 | dout(20) << "evicting session " << session->info.inst << " since autoclose " | |
1067 | "has arrived" << dendl; | |
1068 | // evict session without marking it stale | |
1069 | to_evict.push_back(session); | |
1070 | continue; | |
1071 | } | |
1072 | ||
1073 | if (defer_session_stale && | |
1074 | !session->is_any_flush_waiter() && | |
1075 | !mds->locker->is_revoking_any_caps_from(session->get_client())) { | |
1076 | dout(20) << "deferring marking session " << session->info.inst << " stale " | |
1077 | "since it holds no caps" << dendl; | |
1078 | continue; | |
1079 | } | |
1080 | ||
11fdf7f2 TL |
1081 | auto it = session->info.client_metadata.find("timeout"); |
1082 | if (it != session->info.client_metadata.end()) { | |
1083 | unsigned timeout = strtoul(it->second.c_str(), nullptr, 0); | |
1084 | if (timeout == 0) { | |
1085 | dout(10) << "skipping session " << session->info.inst | |
1086 | << ", infinite timeout specified" << dendl; | |
1087 | continue; | |
1088 | } | |
1089 | double cutoff = queue_max_age + timeout; | |
1090 | if (last_cap_renew_span < cutoff) { | |
1091 | dout(10) << "skipping session " << session->info.inst | |
1092 | << ", timeout (" << timeout << ") specified" | |
1093 | << " and renewed caps recently (" << last_cap_renew_span << "s ago)" << dendl; | |
1094 | continue; | |
1095 | } | |
1096 | ||
1097 | // do not go through stale, evict it directly. | |
1098 | to_evict.push_back(session); | |
1099 | } else { | |
1100 | dout(10) << "new stale session " << session->info.inst | |
1101 | << " last renewed caps " << last_cap_renew_span << "s ago" << dendl; | |
1102 | new_stale.push_back(session); | |
1103 | } | |
7c673cae FG |
1104 | } |
1105 | ||
f64942e4 AA |
1106 | for (auto session : new_stale) { |
1107 | mds->sessionmap.set_state(session, Session::STATE_STALE); | |
494da23a TL |
1108 | if (mds->locker->revoke_stale_caps(session)) { |
1109 | mds->locker->remove_stale_leases(session); | |
1110 | finish_flush_session(session, session->get_push_seq()); | |
9f95a23c | 1111 | auto m = make_message<MClientSession>(CEPH_SESSION_STALE, session->get_push_seq()); |
494da23a TL |
1112 | mds->send_message_client(m, session); |
1113 | } else { | |
1114 | to_evict.push_back(session); | |
1115 | } | |
f64942e4 | 1116 | } |
7c673cae FG |
1117 | } |
1118 | ||
1119 | // autoclose | |
91327a77 | 1120 | cutoff = queue_max_age + mds->mdsmap->get_session_autoclose(); |
7c673cae | 1121 | |
31f18b77 | 1122 | // Collect a list of sessions exceeding the autoclose threshold |
f64942e4 | 1123 | const auto sessions_p2 = mds->sessionmap.by_state.find(Session::STATE_STALE); |
11fdf7f2 TL |
1124 | if (sessions_p2 != mds->sessionmap.by_state.end() && !sessions_p2->second->empty()) { |
1125 | for (auto session : *(sessions_p2->second)) { | |
1126 | assert(session->is_stale()); | |
1127 | auto last_cap_renew_span = std::chrono::duration<double>(now - session->last_cap_renew).count(); | |
1128 | if (last_cap_renew_span < cutoff) { | |
1129 | dout(20) << "oldest stale session is " << session->info.inst | |
1130 | << " and recently renewed caps " << last_cap_renew_span << "s ago" << dendl; | |
1131 | break; | |
1132 | } | |
1133 | to_evict.push_back(session); | |
1134 | } | |
31f18b77 | 1135 | } |
31f18b77 | 1136 | |
11fdf7f2 | 1137 | for (auto session: to_evict) { |
7c673cae | 1138 | if (session->is_importing()) { |
11fdf7f2 TL |
1139 | dout(10) << "skipping session " << session->info.inst << ", it's being imported" << dendl; |
1140 | continue; | |
7c673cae | 1141 | } |
31f18b77 | 1142 | |
11fdf7f2 TL |
1143 | auto last_cap_renew_span = std::chrono::duration<double>(now - session->last_cap_renew).count(); |
1144 | mds->clog->warn() << "evicting unresponsive client " << *session | |
1145 | << ", after " << last_cap_renew_span << " seconds"; | |
1146 | dout(10) << "autoclosing stale session " << session->info.inst | |
1147 | << " last renewed caps " << last_cap_renew_span << "s ago" << dendl; | |
31f18b77 | 1148 | |
11fdf7f2 | 1149 | if (g_conf()->mds_session_blacklist_on_timeout) { |
31f18b77 | 1150 | std::stringstream ss; |
11fdf7f2 | 1151 | mds->evict_client(session->get_client().v, false, true, ss, nullptr); |
31f18b77 FG |
1152 | } else { |
1153 | kill_session(session, NULL); | |
1154 | } | |
7c673cae FG |
1155 | } |
1156 | } | |
1157 | ||
91327a77 AA |
1158 | void Server::evict_cap_revoke_non_responders() { |
1159 | if (!cap_revoke_eviction_timeout) { | |
1160 | return; | |
1161 | } | |
1162 | ||
9f95a23c | 1163 | auto&& to_evict = mds->locker->get_late_revoking_clients(cap_revoke_eviction_timeout); |
91327a77 AA |
1164 | |
1165 | for (auto const &client: to_evict) { | |
1166 | mds->clog->warn() << "client id " << client << " has not responded to" | |
1167 | << " cap revoke by MDS for over " << cap_revoke_eviction_timeout | |
1168 | << " seconds, evicting"; | |
1169 | dout(1) << __func__ << ": evicting cap revoke non-responder client id " | |
1170 | << client << dendl; | |
1171 | ||
1172 | std::stringstream ss; | |
1173 | bool evicted = mds->evict_client(client.v, false, | |
11fdf7f2 | 1174 | g_conf()->mds_session_blacklist_on_evict, |
91327a77 AA |
1175 | ss, nullptr); |
1176 | if (evicted && logger) { | |
1177 | logger->inc(l_mdss_cap_revoke_eviction); | |
1178 | } | |
1179 | } | |
1180 | } | |
1181 | ||
92f5a8d4 | 1182 | void Server::handle_conf_change(const std::set<std::string>& changed) { |
f91f0fd5 TL |
1183 | if (changed.count("mds_forward_all_requests_to_auth")){ |
1184 | forward_all_requests_to_auth = g_conf().get_val<bool>("mds_forward_all_requests_to_auth"); | |
92f5a8d4 | 1185 | } |
91327a77 | 1186 | if (changed.count("mds_cap_revoke_eviction_timeout")) { |
11fdf7f2 | 1187 | cap_revoke_eviction_timeout = g_conf().get_val<double>("mds_cap_revoke_eviction_timeout"); |
91327a77 AA |
1188 | dout(20) << __func__ << " cap revoke eviction timeout changed to " |
1189 | << cap_revoke_eviction_timeout << dendl; | |
1190 | } | |
a8e16298 | 1191 | if (changed.count("mds_recall_max_decay_rate")) { |
11fdf7f2 | 1192 | recall_throttle = DecayCounter(g_conf().get_val<double>("mds_recall_max_decay_rate")); |
a8e16298 | 1193 | } |
9f95a23c TL |
1194 | if (changed.count("mds_max_snaps_per_dir")) { |
1195 | max_snaps_per_dir = g_conf().get_val<uint64_t>("mds_max_snaps_per_dir"); | |
1196 | dout(20) << __func__ << " max snapshots per directory changed to " | |
1197 | << max_snaps_per_dir << dendl; | |
1198 | } | |
1199 | if (changed.count("mds_client_delegate_inos_pct")) { | |
1200 | delegate_inos_pct = g_conf().get_val<uint64_t>("mds_client_delegate_inos_pct"); | |
1201 | } | |
adb31ebb TL |
1202 | if (changed.count("mds_max_caps_per_client")) { |
1203 | max_caps_per_client = g_conf().get_val<uint64_t>("mds_max_caps_per_client"); | |
1204 | } | |
1205 | if (changed.count("mds_session_cap_acquisition_throttle")) { | |
1206 | cap_acquisition_throttle = g_conf().get_val<uint64_t>("mds_session_cap_acquisition_throttle"); | |
1207 | } | |
1208 | if (changed.count("mds_session_max_caps_throttle_ratio")) { | |
1209 | max_caps_throttle_ratio = g_conf().get_val<double>("mds_session_max_caps_throttle_ratio"); | |
1210 | } | |
1211 | if (changed.count("mds_cap_acquisition_throttle_retry_request_timeout")) { | |
1212 | caps_throttle_retry_request_timeout = g_conf().get_val<double>("mds_cap_acquisition_throttle_retry_request_timeout"); | |
1213 | } | |
91327a77 AA |
1214 | } |
1215 | ||
7c673cae | 1216 | /* |
11fdf7f2 | 1217 | * XXX bump in the interface here, not using an MDSContext here |
7c673cae FG |
1218 | * because all the callers right now happen to use a SaferCond |
1219 | */ | |
9f95a23c | 1220 | void Server::kill_session(Session *session, Context *on_safe, bool need_purge_inos) |
7c673cae | 1221 | { |
9f95a23c | 1222 | ceph_assert(ceph_mutex_is_locked_by_me(mds->mds_lock)); |
31f18b77 | 1223 | |
7c673cae FG |
1224 | if ((session->is_opening() || |
1225 | session->is_open() || | |
1226 | session->is_stale()) && | |
1227 | !session->is_importing()) { | |
1228 | dout(10) << "kill_session " << session << dendl; | |
9f95a23c | 1229 | journal_close_session(session, Session::STATE_KILLING, on_safe, need_purge_inos); |
7c673cae FG |
1230 | } else { |
1231 | dout(10) << "kill_session importing or already closing/killing " << session << dendl; | |
11fdf7f2 TL |
1232 | if (session->is_closing() || |
1233 | session->is_killing()) { | |
1234 | if (on_safe) | |
1235 | mdlog->wait_for_safe(new MDSInternalContextWrapper(mds, on_safe)); | |
1236 | } else { | |
1237 | ceph_assert(session->is_closed() || | |
1238 | session->is_importing()); | |
1239 | if (on_safe) | |
1240 | on_safe->complete(0); | |
7c673cae FG |
1241 | } |
1242 | } | |
1243 | } | |
1244 | ||
31f18b77 FG |
1245 | size_t Server::apply_blacklist(const std::set<entity_addr_t> &blacklist) |
1246 | { | |
81eedcae TL |
1247 | bool prenautilus = mds->objecter->with_osdmap( |
1248 | [&](const OSDMap& o) { | |
9f95a23c | 1249 | return o.require_osd_release < ceph_release_t::nautilus; |
81eedcae TL |
1250 | }); |
1251 | ||
1252 | std::vector<Session*> victims; | |
11fdf7f2 | 1253 | const auto& sessions = mds->sessionmap.get_sessions(); |
81eedcae | 1254 | for (const auto& p : sessions) { |
31f18b77 FG |
1255 | if (!p.first.is_client()) { |
1256 | // Do not apply OSDMap blacklist to MDS daemons, we find out | |
1257 | // about their death via MDSMap. | |
1258 | continue; | |
1259 | } | |
1260 | ||
1261 | Session *s = p.second; | |
81eedcae TL |
1262 | auto inst_addr = s->info.inst.addr; |
1263 | // blacklist entries are always TYPE_ANY for nautilus+ | |
1264 | inst_addr.set_type(entity_addr_t::TYPE_ANY); | |
1265 | if (blacklist.count(inst_addr)) { | |
31f18b77 | 1266 | victims.push_back(s); |
81eedcae TL |
1267 | continue; |
1268 | } | |
1269 | if (prenautilus) { | |
1270 | // ...except pre-nautilus, they were TYPE_LEGACY | |
1271 | inst_addr.set_type(entity_addr_t::TYPE_LEGACY); | |
1272 | if (blacklist.count(inst_addr)) { | |
1273 | victims.push_back(s); | |
1274 | } | |
31f18b77 FG |
1275 | } |
1276 | } | |
1277 | ||
9f95a23c | 1278 | for (const auto& s : victims) { |
31f18b77 FG |
1279 | kill_session(s, nullptr); |
1280 | } | |
1281 | ||
1282 | dout(10) << "apply_blacklist: killed " << victims.size() << dendl; | |
1283 | ||
1284 | return victims.size(); | |
1285 | } | |
1286 | ||
9f95a23c | 1287 | void Server::journal_close_session(Session *session, int state, Context *on_safe, bool need_purge_inos) |
7c673cae | 1288 | { |
9f95a23c TL |
1289 | dout(10) << __func__ << " : " |
1290 | << "("<< need_purge_inos << ")" | |
1291 | << session->info.inst | |
1292 | << "(" << session->info.prealloc_inos.size() << "|" << session->pending_prealloc_inos.size() << ")" << dendl; | |
1293 | ||
7c673cae FG |
1294 | uint64_t sseq = mds->sessionmap.set_state(session, state); |
1295 | version_t pv = mds->sessionmap.mark_projected(session); | |
1296 | version_t piv = 0; | |
1297 | ||
1298 | // release alloc and pending-alloc inos for this session | |
1299 | // and wipe out session state, in case the session close aborts for some reason | |
1300 | interval_set<inodeno_t> both; | |
7c673cae | 1301 | both.insert(session->pending_prealloc_inos); |
9f95a23c TL |
1302 | if (!need_purge_inos) |
1303 | both.insert(session->info.prealloc_inos); | |
7c673cae FG |
1304 | if (both.size()) { |
1305 | mds->inotable->project_release_ids(both); | |
1306 | piv = mds->inotable->get_projected_version(); | |
1307 | } else | |
1308 | piv = 0; | |
9f95a23c TL |
1309 | |
1310 | if(need_purge_inos && session->info.prealloc_inos.size()) { | |
1311 | dout(10) << "start purge indoes " << session->info.prealloc_inos << dendl; | |
1312 | LogSegment* ls = mdlog->get_current_segment(); | |
1313 | LogEvent* e = new ESession(session->info.inst, false, pv, both, piv, session->info.prealloc_inos); | |
1314 | MDSLogContextBase* c = new C_MDS_session_finish(this, session, sseq, false, pv, both, piv, | |
1315 | session->info.prealloc_inos, ls, on_safe); | |
1316 | mdlog->start_submit_entry(e, c); | |
1317 | } else { | |
1318 | interval_set<inodeno_t> empty; | |
1319 | LogEvent* e = new ESession(session->info.inst, false, pv, both, piv, empty); | |
1320 | MDSLogContextBase* c = new C_MDS_session_finish(this, session, sseq, false, pv, both, piv, on_safe); | |
1321 | mdlog->start_submit_entry(e, c); | |
1322 | } | |
7c673cae FG |
1323 | mdlog->flush(); |
1324 | ||
1325 | // clean up requests, too | |
9f95a23c TL |
1326 | for (auto p = session->requests.begin(); !p.end(); ) { |
1327 | MDRequestRef mdr(*p); | |
7c673cae FG |
1328 | ++p; |
1329 | mdcache->request_kill(mdr); | |
1330 | } | |
1331 | ||
1332 | finish_flush_session(session, session->get_push_seq()); | |
1333 | } | |
1334 | ||
11fdf7f2 | 1335 | void Server::reconnect_clients(MDSContext *reconnect_done_) |
7c673cae FG |
1336 | { |
1337 | reconnect_done = reconnect_done_; | |
28e407b8 | 1338 | |
11fdf7f2 | 1339 | auto now = clock::now(); |
28e407b8 AA |
1340 | set<Session*> sessions; |
1341 | mds->sessionmap.get_client_session_set(sessions); | |
1342 | for (auto session : sessions) { | |
11fdf7f2 TL |
1343 | if (session->is_open()) { |
1344 | client_reconnect_gather.insert(session->get_client()); | |
92f5a8d4 | 1345 | session->set_reconnecting(true); |
11fdf7f2 TL |
1346 | session->last_cap_renew = now; |
1347 | } | |
28e407b8 | 1348 | } |
7c673cae FG |
1349 | |
1350 | if (client_reconnect_gather.empty()) { | |
1351 | dout(7) << "reconnect_clients -- no sessions, doing nothing." << dendl; | |
1352 | reconnect_gather_finish(); | |
1353 | return; | |
1354 | } | |
1355 | ||
1356 | // clients will get the mdsmap and discover we're reconnecting via the monitor. | |
1357 | ||
11fdf7f2 | 1358 | reconnect_start = now; |
7c673cae FG |
1359 | dout(1) << "reconnect_clients -- " << client_reconnect_gather.size() << " sessions" << dendl; |
1360 | mds->sessionmap.dump(); | |
1361 | } | |
1362 | ||
9f95a23c | 1363 | void Server::handle_client_reconnect(const cref_t<MClientReconnect> &m) |
7c673cae | 1364 | { |
11fdf7f2 TL |
1365 | dout(7) << "handle_client_reconnect " << m->get_source() |
1366 | << (m->has_more() ? " (more)" : "") << dendl; | |
7c673cae | 1367 | client_t from = m->get_source().num(); |
94b18763 | 1368 | Session *session = mds->get_session(m); |
92f5a8d4 TL |
1369 | if (!session) { |
1370 | dout(0) << " ignoring sessionless msg " << *m << dendl; | |
9f95a23c | 1371 | auto reply = make_message<MClientSession>(CEPH_SESSION_REJECT); |
92f5a8d4 TL |
1372 | reply->metadata["error_string"] = "sessionless"; |
1373 | mds->send_message(reply, m->get_connection()); | |
81eedcae | 1374 | return; |
92f5a8d4 TL |
1375 | } |
1376 | ||
1377 | if (!session->is_open()) { | |
1378 | dout(0) << " ignoring msg from not-open session" << *m << dendl; | |
9f95a23c | 1379 | auto reply = make_message<MClientSession>(CEPH_SESSION_CLOSE); |
92f5a8d4 TL |
1380 | mds->send_message(reply, m->get_connection()); |
1381 | return; | |
1382 | } | |
7c673cae FG |
1383 | |
1384 | if (!mds->is_reconnect() && mds->get_want_state() == CEPH_MDS_STATE_RECONNECT) { | |
1385 | dout(10) << " we're almost in reconnect state (mdsmap delivery race?); waiting" << dendl; | |
1386 | mds->wait_for_reconnect(new C_MDS_RetryMessage(mds, m)); | |
1387 | return; | |
1388 | } | |
1389 | ||
f64942e4 | 1390 | auto delay = std::chrono::duration<double>(clock::now() - reconnect_start).count(); |
7c673cae FG |
1391 | dout(10) << " reconnect_start " << reconnect_start << " delay " << delay << dendl; |
1392 | ||
1393 | bool deny = false; | |
b32b8144 | 1394 | if (!mds->is_reconnect() || mds->get_want_state() != CEPH_MDS_STATE_RECONNECT || reconnect_evicting) { |
7c673cae FG |
1395 | // XXX maybe in the future we can do better than this? |
1396 | dout(1) << " no longer in reconnect state, ignoring reconnect, sending close" << dendl; | |
1397 | mds->clog->info() << "denied reconnect attempt (mds is " | |
1398 | << ceph_mds_state_name(mds->get_state()) | |
1399 | << ") from " << m->get_source_inst() | |
11fdf7f2 | 1400 | << " after " << delay << " (allowed interval " << g_conf()->mds_reconnect_timeout << ")"; |
7c673cae | 1401 | deny = true; |
11fdf7f2 TL |
1402 | } else { |
1403 | std::string error_str; | |
1404 | if (!session->is_open()) { | |
1405 | error_str = "session is closed"; | |
1406 | } else if (mdcache->is_readonly()) { | |
1407 | error_str = "mds is readonly"; | |
1408 | } else { | |
1409 | if (session->info.client_metadata.features.empty()) | |
1410 | infer_supported_features(session, session->info.client_metadata); | |
1411 | ||
1412 | feature_bitset_t missing_features = required_client_features; | |
1413 | missing_features -= session->info.client_metadata.features; | |
1414 | if (!missing_features.empty()) { | |
1415 | stringstream ss; | |
1416 | ss << "missing required features '" << missing_features << "'"; | |
1417 | error_str = ss.str(); | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | if (!error_str.empty()) { | |
1422 | deny = true; | |
1423 | dout(1) << " " << error_str << ", ignoring reconnect, sending close" << dendl; | |
1424 | mds->clog->info() << "denied reconnect attempt from " | |
1425 | << m->get_source_inst() << " (" << error_str << ")"; | |
1426 | } | |
7c673cae FG |
1427 | } |
1428 | ||
1429 | if (deny) { | |
9f95a23c | 1430 | auto r = make_message<MClientSession>(CEPH_SESSION_CLOSE); |
11fdf7f2 TL |
1431 | mds->send_message_client(r, session); |
1432 | if (session->is_open()) | |
1433 | kill_session(session, nullptr); | |
7c673cae FG |
1434 | return; |
1435 | } | |
1436 | ||
11fdf7f2 TL |
1437 | if (!m->has_more()) { |
1438 | // notify client of success with an OPEN | |
9f95a23c | 1439 | auto reply = make_message<MClientSession>(CEPH_SESSION_OPEN); |
11fdf7f2 TL |
1440 | if (session->info.has_feature(CEPHFS_FEATURE_MIMIC)) |
1441 | reply->supported_features = supported_features; | |
1442 | mds->send_message_client(reply, session); | |
1443 | mds->clog->debug() << "reconnect by " << session->info.inst << " after " << delay; | |
1444 | } | |
1445 | ||
91327a77 | 1446 | session->last_cap_renew = clock::now(); |
7c673cae FG |
1447 | |
1448 | // snaprealms | |
11fdf7f2 TL |
1449 | for (const auto &r : m->realms) { |
1450 | CInode *in = mdcache->get_inode(inodeno_t(r.realm.ino)); | |
7c673cae FG |
1451 | if (in && in->state_test(CInode::STATE_PURGING)) |
1452 | continue; | |
1453 | if (in) { | |
11fdf7f2 TL |
1454 | if (in->snaprealm) { |
1455 | dout(15) << "open snaprealm (w inode) on " << *in << dendl; | |
7c673cae | 1456 | } else { |
11fdf7f2 TL |
1457 | // this can happen if we are non-auth or we rollback snaprealm |
1458 | dout(15) << "open snaprealm (null snaprealm) on " << *in << dendl; | |
7c673cae | 1459 | } |
11fdf7f2 | 1460 | mdcache->add_reconnected_snaprealm(from, inodeno_t(r.realm.ino), snapid_t(r.realm.seq)); |
7c673cae | 1461 | } else { |
11fdf7f2 TL |
1462 | dout(15) << "open snaprealm (w/o inode) on " << inodeno_t(r.realm.ino) |
1463 | << " seq " << r.realm.seq << dendl; | |
1464 | mdcache->add_reconnected_snaprealm(from, inodeno_t(r.realm.ino), snapid_t(r.realm.seq)); | |
7c673cae FG |
1465 | } |
1466 | } | |
1467 | ||
1468 | // caps | |
11fdf7f2 | 1469 | for (const auto &p : m->caps) { |
7c673cae | 1470 | // make sure our last_cap_id is MAX over all issued caps |
11fdf7f2 TL |
1471 | if (p.second.capinfo.cap_id > mdcache->last_cap_id) |
1472 | mdcache->last_cap_id = p.second.capinfo.cap_id; | |
7c673cae | 1473 | |
11fdf7f2 | 1474 | CInode *in = mdcache->get_inode(p.first); |
7c673cae FG |
1475 | if (in && in->state_test(CInode::STATE_PURGING)) |
1476 | continue; | |
1477 | if (in && in->is_auth()) { | |
1478 | // we recovered it, and it's ours. take note. | |
11fdf7f2 | 1479 | dout(15) << "open cap realm " << inodeno_t(p.second.capinfo.snaprealm) |
7c673cae | 1480 | << " on " << *in << dendl; |
11fdf7f2 TL |
1481 | in->reconnect_cap(from, p.second, session); |
1482 | mdcache->add_reconnected_cap(from, p.first, p.second); | |
1483 | recover_filelocks(in, p.second.flockbl, m->get_orig_source().num()); | |
7c673cae FG |
1484 | continue; |
1485 | } | |
1486 | ||
1487 | if (in && !in->is_auth()) { | |
1488 | // not mine. | |
1489 | dout(10) << "non-auth " << *in << ", will pass off to authority" << dendl; | |
1490 | // add to cap export list. | |
11fdf7f2 TL |
1491 | mdcache->rejoin_export_caps(p.first, from, p.second, |
1492 | in->authority().first, true); | |
7c673cae FG |
1493 | } else { |
1494 | // don't know if the inode is mine | |
11fdf7f2 TL |
1495 | dout(10) << "missing ino " << p.first << ", will load later" << dendl; |
1496 | mdcache->rejoin_recovered_caps(p.first, from, p.second, MDS_RANK_NONE); | |
7c673cae FG |
1497 | } |
1498 | } | |
1499 | ||
f64942e4 AA |
1500 | reconnect_last_seen = clock::now(); |
1501 | ||
11fdf7f2 TL |
1502 | if (!m->has_more()) { |
1503 | mdcache->rejoin_recovered_client(session->get_client(), session->info.inst); | |
1504 | ||
1505 | // remove from gather set | |
1506 | client_reconnect_gather.erase(from); | |
92f5a8d4 | 1507 | session->set_reconnecting(false); |
11fdf7f2 TL |
1508 | if (client_reconnect_gather.empty()) |
1509 | reconnect_gather_finish(); | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | void Server::infer_supported_features(Session *session, client_metadata_t& client_metadata) | |
1514 | { | |
1515 | int supported = -1; | |
1516 | auto it = client_metadata.find("ceph_version"); | |
1517 | if (it != client_metadata.end()) { | |
1518 | // user space client | |
1519 | if (it->second.compare(0, 16, "ceph version 12.") == 0) | |
1520 | supported = CEPHFS_FEATURE_LUMINOUS; | |
1521 | else if (session->get_connection()->has_feature(CEPH_FEATURE_FS_CHANGE_ATTR)) | |
1522 | supported = CEPHFS_FEATURE_KRAKEN; | |
1523 | } else { | |
1524 | it = client_metadata.find("kernel_version"); | |
1525 | if (it != client_metadata.end()) { | |
1526 | // kernel client | |
1527 | if (session->get_connection()->has_feature(CEPH_FEATURE_NEW_OSDOP_ENCODING)) | |
1528 | supported = CEPHFS_FEATURE_LUMINOUS; | |
1529 | } | |
1530 | } | |
1531 | if (supported == -1 && | |
1532 | session->get_connection()->has_feature(CEPH_FEATURE_FS_FILE_LAYOUT_V2)) | |
1533 | supported = CEPHFS_FEATURE_JEWEL; | |
7c673cae | 1534 | |
11fdf7f2 TL |
1535 | if (supported >= 0) { |
1536 | unsigned long value = (1UL << (supported + 1)) - 1; | |
1537 | client_metadata.features = feature_bitset_t(value); | |
1538 | dout(10) << __func__ << " got '" << client_metadata.features << "'" << dendl; | |
1539 | } | |
7c673cae FG |
1540 | } |
1541 | ||
11fdf7f2 TL |
1542 | void Server::update_required_client_features() |
1543 | { | |
1544 | vector<size_t> bits = CEPHFS_FEATURES_MDS_REQUIRED; | |
1545 | ||
9f95a23c TL |
1546 | /* If this blows up on you, you added a release without adding a new release bit to cephfs_features.h */ |
1547 | static_assert(CEPHFS_CURRENT_RELEASE == CEPH_RELEASE_MAX-1); | |
1548 | ||
1549 | ceph_release_t min_compat = mds->mdsmap->get_min_compat_client(); | |
1550 | if (min_compat >= ceph_release_t::octopus) | |
1551 | bits.push_back(CEPHFS_FEATURE_OCTOPUS); | |
1552 | else if (min_compat >= ceph_release_t::nautilus) | |
11fdf7f2 | 1553 | bits.push_back(CEPHFS_FEATURE_NAUTILUS); |
9f95a23c | 1554 | else if (min_compat >= ceph_release_t::mimic) |
11fdf7f2 | 1555 | bits.push_back(CEPHFS_FEATURE_MIMIC); |
9f95a23c | 1556 | else if (min_compat >= ceph_release_t::luminous) |
11fdf7f2 | 1557 | bits.push_back(CEPHFS_FEATURE_LUMINOUS); |
9f95a23c | 1558 | else if (min_compat >= ceph_release_t::kraken) |
11fdf7f2 | 1559 | bits.push_back(CEPHFS_FEATURE_KRAKEN); |
9f95a23c | 1560 | else if (min_compat >= ceph_release_t::jewel) |
11fdf7f2 TL |
1561 | bits.push_back(CEPHFS_FEATURE_JEWEL); |
1562 | ||
1563 | std::sort(bits.begin(), bits.end()); | |
1564 | required_client_features = feature_bitset_t(bits); | |
1565 | dout(7) << "required_client_features: " << required_client_features << dendl; | |
1566 | ||
1567 | if (mds->get_state() >= MDSMap::STATE_RECONNECT) { | |
1568 | set<Session*> sessions; | |
1569 | mds->sessionmap.get_client_session_set(sessions); | |
1570 | for (auto session : sessions) { | |
1571 | feature_bitset_t missing_features = required_client_features; | |
1572 | missing_features -= session->info.client_metadata.features; | |
1573 | if (!missing_features.empty()) { | |
1574 | bool blacklisted = mds->objecter->with_osdmap( | |
1575 | [session](const OSDMap &osd_map) -> bool { | |
1576 | return osd_map.is_blacklisted(session->info.inst.addr); | |
1577 | }); | |
1578 | if (blacklisted) | |
1579 | continue; | |
7c673cae | 1580 | |
11fdf7f2 TL |
1581 | mds->clog->warn() << "evicting session " << *session << ", missing required features '" |
1582 | << missing_features << "'"; | |
1583 | std::stringstream ss; | |
1584 | mds->evict_client(session->get_client().v, false, | |
1585 | g_conf()->mds_session_blacklist_on_evict, ss); | |
1586 | } | |
1587 | } | |
1588 | } | |
1589 | } | |
7c673cae FG |
1590 | |
1591 | void Server::reconnect_gather_finish() | |
1592 | { | |
1593 | dout(7) << "reconnect_gather_finish. failed on " << failed_reconnects << " clients" << dendl; | |
11fdf7f2 TL |
1594 | ceph_assert(reconnect_done); |
1595 | ||
1596 | if (!mds->snapclient->is_synced()) { | |
1597 | // make sure snaptable cache is populated. snaprealms will be | |
1598 | // extensively used in rejoin stage. | |
1599 | dout(7) << " snaptable cache isn't synced, delaying state transition" << dendl; | |
1600 | mds->snapclient->wait_for_sync(reconnect_done); | |
1601 | } else { | |
1602 | reconnect_done->complete(0); | |
1603 | } | |
7c673cae FG |
1604 | reconnect_done = NULL; |
1605 | } | |
1606 | ||
1607 | void Server::reconnect_tick() | |
1608 | { | |
31f18b77 | 1609 | if (reconnect_evicting) { |
f64942e4 | 1610 | dout(7) << "reconnect_tick: waiting for evictions" << dendl; |
31f18b77 FG |
1611 | return; |
1612 | } | |
1613 | ||
f64942e4 AA |
1614 | if (client_reconnect_gather.empty()) |
1615 | return; | |
31f18b77 | 1616 | |
f64942e4 AA |
1617 | auto now = clock::now(); |
1618 | auto elapse1 = std::chrono::duration<double>(now - reconnect_start).count(); | |
11fdf7f2 | 1619 | if (elapse1 < g_conf()->mds_reconnect_timeout) |
f64942e4 | 1620 | return; |
31f18b77 | 1621 | |
f64942e4 AA |
1622 | vector<Session*> remaining_sessions; |
1623 | remaining_sessions.reserve(client_reconnect_gather.size()); | |
1624 | for (auto c : client_reconnect_gather) { | |
1625 | Session *session = mds->sessionmap.get_session(entity_name_t::CLIENT(c.v)); | |
1626 | ceph_assert(session); | |
1627 | remaining_sessions.push_back(session); | |
1628 | // client re-sends cap flush messages before the reconnect message | |
1629 | if (session->last_seen > reconnect_last_seen) | |
1630 | reconnect_last_seen = session->last_seen; | |
1631 | } | |
31f18b77 | 1632 | |
f64942e4 | 1633 | auto elapse2 = std::chrono::duration<double>(now - reconnect_last_seen).count(); |
11fdf7f2 | 1634 | if (elapse2 < g_conf()->mds_reconnect_timeout / 2) { |
f64942e4 AA |
1635 | dout(7) << "reconnect_tick: last seen " << elapse2 |
1636 | << " seconds ago, extending reconnect interval" << dendl; | |
1637 | return; | |
1638 | } | |
1639 | ||
1640 | dout(7) << "reconnect timed out, " << remaining_sessions.size() | |
1641 | << " clients have not reconnected in time" << dendl; | |
1642 | ||
1643 | // If we're doing blacklist evictions, use this to wait for them before | |
1644 | // proceeding to reconnect_gather_finish | |
1645 | MDSGatherBuilder gather(g_ceph_context); | |
1646 | ||
1647 | for (auto session : remaining_sessions) { | |
11fdf7f2 TL |
1648 | // Keep sessions that have specified timeout. These sessions will prevent |
1649 | // mds from going to active. MDS goes to active after they all have been | |
1650 | // killed or reclaimed. | |
1651 | if (session->info.client_metadata.find("timeout") != | |
1652 | session->info.client_metadata.end()) { | |
1653 | dout(1) << "reconnect keeps " << session->info.inst | |
1654 | << ", need to be reclaimed" << dendl; | |
1655 | client_reclaim_gather.insert(session->get_client()); | |
1656 | continue; | |
1657 | } | |
1658 | ||
f64942e4 | 1659 | dout(1) << "reconnect gives up on " << session->info.inst << dendl; |
31f18b77 | 1660 | |
f64942e4 AA |
1661 | mds->clog->warn() << "evicting unresponsive client " << *session |
1662 | << ", after waiting " << elapse1 | |
1663 | << " seconds during MDS startup"; | |
1664 | ||
11fdf7f2 | 1665 | if (g_conf()->mds_session_blacklist_on_timeout) { |
f64942e4 AA |
1666 | std::stringstream ss; |
1667 | mds->evict_client(session->get_client().v, false, true, ss, | |
1668 | gather.new_sub()); | |
31f18b77 | 1669 | } else { |
9f95a23c | 1670 | kill_session(session, NULL, true); |
31f18b77 | 1671 | } |
f64942e4 AA |
1672 | |
1673 | failed_reconnects++; | |
1674 | } | |
1675 | client_reconnect_gather.clear(); | |
1676 | ||
1677 | if (gather.has_subs()) { | |
1678 | dout(1) << "reconnect will complete once clients are evicted" << dendl; | |
9f95a23c | 1679 | gather.set_finisher(new MDSInternalContextWrapper(mds, new LambdaContext( |
f64942e4 AA |
1680 | [this](int r){reconnect_gather_finish();}))); |
1681 | gather.activate(); | |
1682 | reconnect_evicting = true; | |
1683 | } else { | |
1684 | reconnect_gather_finish(); | |
7c673cae FG |
1685 | } |
1686 | } | |
1687 | ||
1688 | void Server::recover_filelocks(CInode *in, bufferlist locks, int64_t client) | |
1689 | { | |
1690 | if (!locks.length()) return; | |
1691 | int numlocks; | |
1692 | ceph_filelock lock; | |
11fdf7f2 TL |
1693 | auto p = locks.cbegin(); |
1694 | decode(numlocks, p); | |
7c673cae | 1695 | for (int i = 0; i < numlocks; ++i) { |
11fdf7f2 | 1696 | decode(lock, p); |
7c673cae FG |
1697 | lock.client = client; |
1698 | in->get_fcntl_lock_state()->held_locks.insert(pair<uint64_t, ceph_filelock>(lock.start, lock)); | |
1699 | ++in->get_fcntl_lock_state()->client_held_lock_counts[client]; | |
1700 | } | |
11fdf7f2 | 1701 | decode(numlocks, p); |
7c673cae | 1702 | for (int i = 0; i < numlocks; ++i) { |
11fdf7f2 | 1703 | decode(lock, p); |
7c673cae FG |
1704 | lock.client = client; |
1705 | in->get_flock_lock_state()->held_locks.insert(pair<uint64_t, ceph_filelock> (lock.start, lock)); | |
1706 | ++in->get_flock_lock_state()->client_held_lock_counts[client]; | |
1707 | } | |
1708 | } | |
1709 | ||
7c673cae FG |
1710 | /** |
1711 | * Call this when the MDCache is oversized, to send requests to the clients | |
1712 | * to trim some caps, and consequently unpin some inodes in the MDCache so | |
1713 | * that it can trim too. | |
1714 | */ | |
a8e16298 TL |
1715 | std::pair<bool, uint64_t> Server::recall_client_state(MDSGatherBuilder* gather, RecallFlags flags) |
1716 | { | |
1717 | const auto now = clock::now(); | |
92f5a8d4 TL |
1718 | const bool steady = !!(flags&RecallFlags::STEADY); |
1719 | const bool enforce_max = !!(flags&RecallFlags::ENFORCE_MAX); | |
1720 | const bool enforce_liveness = !!(flags&RecallFlags::ENFORCE_LIVENESS); | |
1721 | const bool trim = !!(flags&RecallFlags::TRIM); | |
a8e16298 | 1722 | |
11fdf7f2 TL |
1723 | const auto max_caps_per_client = g_conf().get_val<uint64_t>("mds_max_caps_per_client"); |
1724 | const auto min_caps_per_client = g_conf().get_val<uint64_t>("mds_min_caps_per_client"); | |
1725 | const auto recall_global_max_decay_threshold = g_conf().get_val<Option::size_t>("mds_recall_global_max_decay_threshold"); | |
1726 | const auto recall_max_caps = g_conf().get_val<Option::size_t>("mds_recall_max_caps"); | |
1727 | const auto recall_max_decay_threshold = g_conf().get_val<Option::size_t>("mds_recall_max_decay_threshold"); | |
92f5a8d4 | 1728 | const auto cache_liveness_magnitude = g_conf().get_val<Option::size_t>("mds_session_cache_liveness_magnitude"); |
a8e16298 TL |
1729 | |
1730 | dout(7) << __func__ << ":" | |
1731 | << " min=" << min_caps_per_client | |
1732 | << " max=" << max_caps_per_client | |
1733 | << " total=" << Capability::count() | |
92f5a8d4 | 1734 | << " flags=" << flags |
a8e16298 | 1735 | << dendl; |
f64942e4 | 1736 | |
a8e16298 TL |
1737 | /* trim caps of sessions with the most caps first */ |
1738 | std::multimap<uint64_t, Session*> caps_session; | |
92f5a8d4 | 1739 | auto f = [&caps_session, enforce_max, enforce_liveness, trim, max_caps_per_client, cache_liveness_magnitude](auto& s) { |
a8e16298 | 1740 | auto num_caps = s->caps.size(); |
92f5a8d4 TL |
1741 | auto cache_liveness = s->get_session_cache_liveness(); |
1742 | if (trim || (enforce_max && num_caps > max_caps_per_client) || (enforce_liveness && cache_liveness < (num_caps>>cache_liveness_magnitude))) { | |
a8e16298 TL |
1743 | caps_session.emplace(std::piecewise_construct, std::forward_as_tuple(num_caps), std::forward_as_tuple(s)); |
1744 | } | |
1745 | }; | |
1746 | mds->sessionmap.get_client_sessions(std::move(f)); | |
1747 | ||
1748 | std::pair<bool, uint64_t> result = {false, 0}; | |
11fdf7f2 | 1749 | auto& [throttled, caps_recalled] = result; |
a8e16298 | 1750 | last_recall_state = now; |
11fdf7f2 | 1751 | for (const auto& [num_caps, session] : boost::adaptors::reverse(caps_session)) { |
7c673cae | 1752 | if (!session->is_open() || |
11fdf7f2 | 1753 | !session->get_connection() || |
7c673cae FG |
1754 | !session->info.inst.name.is_client()) |
1755 | continue; | |
1756 | ||
a8e16298 TL |
1757 | dout(10) << __func__ << ":" |
1758 | << " session " << session->info.inst | |
1759 | << " caps " << num_caps | |
7c673cae FG |
1760 | << ", leases " << session->leases.size() |
1761 | << dendl; | |
1762 | ||
a8e16298 TL |
1763 | uint64_t newlim; |
1764 | if (num_caps < recall_max_caps || (num_caps-recall_max_caps) < min_caps_per_client) { | |
1765 | newlim = min_caps_per_client; | |
1766 | } else { | |
1767 | newlim = num_caps-recall_max_caps; | |
1768 | } | |
1769 | if (num_caps > newlim) { | |
1770 | /* now limit the number of caps we recall at a time to prevent overloading ourselves */ | |
1771 | uint64_t recall = std::min<uint64_t>(recall_max_caps, num_caps-newlim); | |
1772 | newlim = num_caps-recall; | |
1773 | const uint64_t session_recall_throttle = session->get_recall_caps_throttle(); | |
11fdf7f2 TL |
1774 | const uint64_t session_recall_throttle2o = session->get_recall_caps_throttle2o(); |
1775 | const uint64_t global_recall_throttle = recall_throttle.get(); | |
a8e16298 TL |
1776 | if (session_recall_throttle+recall > recall_max_decay_threshold) { |
1777 | dout(15) << " session recall threshold (" << recall_max_decay_threshold << ") hit at " << session_recall_throttle << "; skipping!" << dendl; | |
1778 | throttled = true; | |
1779 | continue; | |
11fdf7f2 TL |
1780 | } else if (session_recall_throttle2o+recall > recall_max_caps*2) { |
1781 | dout(15) << " session recall 2nd-order threshold (" << 2*recall_max_caps << ") hit at " << session_recall_throttle2o << "; skipping!" << dendl; | |
1782 | throttled = true; | |
1783 | continue; | |
a8e16298 TL |
1784 | } else if (global_recall_throttle+recall > recall_global_max_decay_threshold) { |
1785 | dout(15) << " global recall threshold (" << recall_global_max_decay_threshold << ") hit at " << global_recall_throttle << "; skipping!" << dendl; | |
1786 | throttled = true; | |
1787 | break; | |
1788 | } | |
1789 | ||
1790 | // now check if we've recalled caps recently and the client is unlikely to satisfy a new recall | |
1791 | if (steady) { | |
1792 | const auto session_recall = session->get_recall_caps(); | |
1793 | const auto session_release = session->get_release_caps(); | |
1794 | if (2*session_release < session_recall && 2*session_recall > recall_max_decay_threshold) { | |
1795 | /* The session has been unable to keep up with the number of caps | |
1796 | * recalled (by half); additionally, to prevent marking sessions | |
1797 | * we've just begun to recall from, the session_recall counter | |
1798 | * (decayed count of caps recently recalled) is **greater** than the | |
1799 | * session threshold for the session's cap recall throttle. | |
1800 | */ | |
1801 | dout(15) << " 2*session_release < session_recall" | |
11fdf7f2 TL |
1802 | " (2*" << session_release << " < " << session_recall << ") &&" |
1803 | " 2*session_recall < recall_max_decay_threshold" | |
1804 | " (2*" << session_recall << " > " << recall_max_decay_threshold << ")" | |
a8e16298 TL |
1805 | " Skipping because we are unlikely to get more released." << dendl; |
1806 | continue; | |
1807 | } else if (recall < recall_max_caps && 2*recall < session_recall) { | |
1808 | /* The number of caps recalled is less than the number we *could* | |
1809 | * recall (so there isn't much left to recall?) and the number of | |
1810 | * caps is less than the current recall_caps counter (decayed count | |
1811 | * of caps recently recalled). | |
1812 | */ | |
1813 | dout(15) << " 2*recall < session_recall " | |
1814 | " (2*" << recall << " < " << session_recall << ") &&" | |
1815 | " recall < recall_max_caps (" << recall << " < " << recall_max_caps << ");" | |
1816 | " Skipping because we are unlikely to get more released." << dendl; | |
1817 | continue; | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | dout(7) << " recalling " << recall << " caps; session_recall_throttle = " << session_recall_throttle << "; global_recall_throttle = " << global_recall_throttle << dendl; | |
1822 | ||
9f95a23c | 1823 | auto m = make_message<MClientSession>(CEPH_SESSION_RECALL_STATE); |
3efd9988 FG |
1824 | m->head.max_caps = newlim; |
1825 | mds->send_message_client(m, session); | |
a8e16298 | 1826 | if (gather) { |
f91f0fd5 | 1827 | flush_session(session, *gather); |
f64942e4 | 1828 | } |
a8e16298 | 1829 | caps_recalled += session->notify_recall_sent(newlim); |
11fdf7f2 | 1830 | recall_throttle.hit(recall); |
7c673cae FG |
1831 | } |
1832 | } | |
a8e16298 TL |
1833 | |
1834 | dout(7) << "recalled" << (throttled ? " (throttled)" : "") << " " << caps_recalled << " client caps." << dendl; | |
1835 | ||
1836 | return result; | |
7c673cae FG |
1837 | } |
1838 | ||
1839 | void Server::force_clients_readonly() | |
1840 | { | |
1841 | dout(10) << "force_clients_readonly" << dendl; | |
1842 | set<Session*> sessions; | |
1843 | mds->sessionmap.get_client_session_set(sessions); | |
1844 | for (set<Session*>::const_iterator p = sessions.begin(); | |
1845 | p != sessions.end(); | |
1846 | ++p) { | |
1847 | Session *session = *p; | |
1848 | if (!session->info.inst.name.is_client() || | |
1849 | !(session->is_open() || session->is_stale())) | |
1850 | continue; | |
9f95a23c | 1851 | mds->send_message_client(make_message<MClientSession>(CEPH_SESSION_FORCE_RO), session); |
7c673cae FG |
1852 | } |
1853 | } | |
1854 | ||
1855 | /******* | |
1856 | * some generic stuff for finishing off requests | |
1857 | */ | |
1858 | void Server::journal_and_reply(MDRequestRef& mdr, CInode *in, CDentry *dn, LogEvent *le, MDSLogContextBase *fin) | |
1859 | { | |
1860 | dout(10) << "journal_and_reply tracei " << in << " tracedn " << dn << dendl; | |
11fdf7f2 | 1861 | ceph_assert(!mdr->has_completed); |
7c673cae FG |
1862 | |
1863 | // note trace items for eventual reply. | |
1864 | mdr->tracei = in; | |
1865 | if (in) | |
1866 | mdr->pin(in); | |
1867 | ||
1868 | mdr->tracedn = dn; | |
1869 | if (dn) | |
1870 | mdr->pin(dn); | |
1871 | ||
1872 | early_reply(mdr, in, dn); | |
1873 | ||
1874 | mdr->committing = true; | |
1875 | submit_mdlog_entry(le, fin, mdr, __func__); | |
1876 | ||
1877 | if (mdr->client_request && mdr->client_request->is_queued_for_replay()) { | |
1878 | if (mds->queue_one_replay()) { | |
1879 | dout(10) << " queued next replay op" << dendl; | |
1880 | } else { | |
11fdf7f2 | 1881 | dout(10) << " journaled last replay op" << dendl; |
7c673cae FG |
1882 | } |
1883 | } else if (mdr->did_early_reply) | |
b32b8144 | 1884 | mds->locker->drop_rdlocks_for_early_reply(mdr.get()); |
7c673cae FG |
1885 | else |
1886 | mdlog->flush(); | |
1887 | } | |
1888 | ||
1889 | void Server::submit_mdlog_entry(LogEvent *le, MDSLogContextBase *fin, MDRequestRef& mdr, | |
11fdf7f2 | 1890 | std::string_view event) |
7c673cae FG |
1891 | { |
1892 | if (mdr) { | |
1893 | string event_str("submit entry: "); | |
1894 | event_str += event; | |
11fdf7f2 | 1895 | mdr->mark_event(event_str); |
7c673cae FG |
1896 | } |
1897 | mdlog->submit_entry(le, fin); | |
1898 | } | |
1899 | ||
1900 | /* | |
1901 | * send response built from mdr contents and error code; clean up mdr | |
1902 | */ | |
1903 | void Server::respond_to_request(MDRequestRef& mdr, int r) | |
1904 | { | |
1905 | if (mdr->client_request) { | |
f91f0fd5 TL |
1906 | if (mdr->is_batch_head()) { |
1907 | dout(20) << __func__ << " batch head " << *mdr << dendl; | |
1908 | mdr->release_batch_op()->respond(r); | |
9f95a23c TL |
1909 | } else { |
1910 | reply_client_request(mdr, make_message<MClientReply>(*mdr->client_request, r)); | |
1911 | } | |
7c673cae FG |
1912 | } else if (mdr->internal_op > -1) { |
1913 | dout(10) << "respond_to_request on internal request " << mdr << dendl; | |
1914 | if (!mdr->internal_op_finish) | |
11fdf7f2 | 1915 | ceph_abort_msg("trying to respond to internal op without finisher"); |
7c673cae FG |
1916 | mdr->internal_op_finish->complete(r); |
1917 | mdcache->request_finish(mdr); | |
1918 | } | |
1919 | } | |
1920 | ||
91327a77 | 1921 | // statistics mds req op number and latency |
9f95a23c | 1922 | void Server::perf_gather_op_latency(const cref_t<MClientRequest> &req, utime_t lat) |
91327a77 AA |
1923 | { |
1924 | int code = l_mdss_first; | |
1925 | switch(req->get_op()) { | |
1926 | case CEPH_MDS_OP_LOOKUPHASH: | |
1927 | code = l_mdss_req_lookuphash_latency; | |
1928 | break; | |
1929 | case CEPH_MDS_OP_LOOKUPINO: | |
1930 | code = l_mdss_req_lookupino_latency; | |
1931 | break; | |
1932 | case CEPH_MDS_OP_LOOKUPPARENT: | |
1933 | code = l_mdss_req_lookupparent_latency; | |
1934 | break; | |
1935 | case CEPH_MDS_OP_LOOKUPNAME: | |
1936 | code = l_mdss_req_lookupname_latency; | |
1937 | break; | |
1938 | case CEPH_MDS_OP_LOOKUP: | |
1939 | code = l_mdss_req_lookup_latency; | |
1940 | break; | |
1941 | case CEPH_MDS_OP_LOOKUPSNAP: | |
1942 | code = l_mdss_req_lookupsnap_latency; | |
1943 | break; | |
1944 | case CEPH_MDS_OP_GETATTR: | |
1945 | code = l_mdss_req_getattr_latency; | |
1946 | break; | |
1947 | case CEPH_MDS_OP_SETATTR: | |
1948 | code = l_mdss_req_setattr_latency; | |
1949 | break; | |
1950 | case CEPH_MDS_OP_SETLAYOUT: | |
1951 | code = l_mdss_req_setlayout_latency; | |
1952 | break; | |
1953 | case CEPH_MDS_OP_SETDIRLAYOUT: | |
1954 | code = l_mdss_req_setdirlayout_latency; | |
1955 | break; | |
1956 | case CEPH_MDS_OP_SETXATTR: | |
1957 | code = l_mdss_req_setxattr_latency; | |
1958 | break; | |
1959 | case CEPH_MDS_OP_RMXATTR: | |
1960 | code = l_mdss_req_rmxattr_latency; | |
1961 | break; | |
1962 | case CEPH_MDS_OP_READDIR: | |
1963 | code = l_mdss_req_readdir_latency; | |
1964 | break; | |
1965 | case CEPH_MDS_OP_SETFILELOCK: | |
1966 | code = l_mdss_req_setfilelock_latency; | |
1967 | break; | |
1968 | case CEPH_MDS_OP_GETFILELOCK: | |
1969 | code = l_mdss_req_getfilelock_latency; | |
1970 | break; | |
1971 | case CEPH_MDS_OP_CREATE: | |
1972 | code = l_mdss_req_create_latency; | |
1973 | break; | |
1974 | case CEPH_MDS_OP_OPEN: | |
1975 | code = l_mdss_req_open_latency; | |
1976 | break; | |
1977 | case CEPH_MDS_OP_MKNOD: | |
1978 | code = l_mdss_req_mknod_latency; | |
1979 | break; | |
1980 | case CEPH_MDS_OP_LINK: | |
1981 | code = l_mdss_req_link_latency; | |
1982 | break; | |
1983 | case CEPH_MDS_OP_UNLINK: | |
1984 | code = l_mdss_req_unlink_latency; | |
1985 | break; | |
1986 | case CEPH_MDS_OP_RMDIR: | |
1987 | code = l_mdss_req_rmdir_latency; | |
1988 | break; | |
1989 | case CEPH_MDS_OP_RENAME: | |
1990 | code = l_mdss_req_rename_latency; | |
1991 | break; | |
1992 | case CEPH_MDS_OP_MKDIR: | |
1993 | code = l_mdss_req_mkdir_latency; | |
1994 | break; | |
1995 | case CEPH_MDS_OP_SYMLINK: | |
1996 | code = l_mdss_req_symlink_latency; | |
1997 | break; | |
1998 | case CEPH_MDS_OP_LSSNAP: | |
1999 | code = l_mdss_req_lssnap_latency; | |
2000 | break; | |
2001 | case CEPH_MDS_OP_MKSNAP: | |
2002 | code = l_mdss_req_mksnap_latency; | |
2003 | break; | |
2004 | case CEPH_MDS_OP_RMSNAP: | |
2005 | code = l_mdss_req_rmsnap_latency; | |
2006 | break; | |
2007 | case CEPH_MDS_OP_RENAMESNAP: | |
2008 | code = l_mdss_req_renamesnap_latency; | |
2009 | break; | |
2010 | default: ceph_abort(); | |
2011 | } | |
2012 | logger->tinc(code, lat); | |
2013 | } | |
2014 | ||
7c673cae FG |
2015 | void Server::early_reply(MDRequestRef& mdr, CInode *tracei, CDentry *tracedn) |
2016 | { | |
11fdf7f2 | 2017 | if (!g_conf()->mds_early_reply) |
7c673cae FG |
2018 | return; |
2019 | ||
b32b8144 FG |
2020 | if (mdr->no_early_reply) { |
2021 | dout(10) << "early_reply - flag no_early_reply is set, not allowed." << dendl; | |
2022 | return; | |
2023 | } | |
2024 | ||
7c673cae FG |
2025 | if (mdr->has_more() && mdr->more()->has_journaled_slaves) { |
2026 | dout(10) << "early_reply - there are journaled slaves, not allowed." << dendl; | |
2027 | return; | |
2028 | } | |
2029 | ||
2030 | if (mdr->alloc_ino) { | |
2031 | dout(10) << "early_reply - allocated ino, not allowed" << dendl; | |
2032 | return; | |
2033 | } | |
2034 | ||
9f95a23c | 2035 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
2036 | entity_inst_t client_inst = req->get_source_inst(); |
2037 | if (client_inst.name.is_mds()) | |
2038 | return; | |
2039 | ||
2040 | if (req->is_replay()) { | |
2041 | dout(10) << " no early reply on replay op" << dendl; | |
2042 | return; | |
2043 | } | |
2044 | ||
2045 | ||
9f95a23c | 2046 | auto reply = make_message<MClientReply>(*req, 0); |
7c673cae FG |
2047 | reply->set_unsafe(); |
2048 | ||
2049 | // mark xlocks "done", indicating that we are exposing uncommitted changes. | |
2050 | // | |
2051 | //_rename_finish() does not send dentry link/unlink message to replicas. | |
2052 | // so do not set xlocks on dentries "done", the xlocks prevent dentries | |
2053 | // that have projected linkages from getting new replica. | |
2054 | mds->locker->set_xlocks_done(mdr.get(), req->get_op() == CEPH_MDS_OP_RENAME); | |
2055 | ||
2056 | dout(10) << "early_reply " << reply->get_result() | |
2057 | << " (" << cpp_strerror(reply->get_result()) | |
2058 | << ") " << *req << dendl; | |
2059 | ||
2060 | if (tracei || tracedn) { | |
2061 | if (tracei) | |
2062 | mdr->cap_releases.erase(tracei->vino()); | |
2063 | if (tracedn) | |
2064 | mdr->cap_releases.erase(tracedn->get_dir()->get_inode()->vino()); | |
2065 | ||
9f95a23c | 2066 | set_trace_dist(reply, tracei, tracedn, mdr); |
7c673cae FG |
2067 | } |
2068 | ||
2069 | reply->set_extra_bl(mdr->reply_extra_bl); | |
11fdf7f2 | 2070 | mds->send_message_client(reply, mdr->session); |
7c673cae FG |
2071 | |
2072 | mdr->did_early_reply = true; | |
2073 | ||
2074 | mds->logger->inc(l_mds_reply); | |
2075 | utime_t lat = ceph_clock_now() - req->get_recv_stamp(); | |
2076 | mds->logger->tinc(l_mds_reply_latency, lat); | |
91327a77 AA |
2077 | if (client_inst.name.is_client()) { |
2078 | mds->sessionmap.hit_session(mdr->session); | |
2079 | } | |
2080 | perf_gather_op_latency(req, lat); | |
7c673cae FG |
2081 | dout(20) << "lat " << lat << dendl; |
2082 | ||
2083 | mdr->mark_event("early_replied"); | |
2084 | } | |
2085 | ||
2086 | /* | |
2087 | * send given reply | |
2088 | * include a trace to tracei | |
2089 | * Clean up mdr | |
2090 | */ | |
9f95a23c | 2091 | void Server::reply_client_request(MDRequestRef& mdr, const ref_t<MClientReply> &reply) |
7c673cae | 2092 | { |
11fdf7f2 | 2093 | ceph_assert(mdr.get()); |
9f95a23c | 2094 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
2095 | |
2096 | dout(7) << "reply_client_request " << reply->get_result() | |
2097 | << " (" << cpp_strerror(reply->get_result()) | |
2098 | << ") " << *req << dendl; | |
2099 | ||
2100 | mdr->mark_event("replying"); | |
2101 | ||
2102 | Session *session = mdr->session; | |
2103 | ||
2104 | // note successful request in session map? | |
2105 | // | |
2106 | // setfilelock requests are special, they only modify states in MDS memory. | |
2107 | // The states get lost when MDS fails. If Client re-send a completed | |
2108 | // setfilelock request, it means that client did not receive corresponding | |
2109 | // setfilelock reply. So MDS should re-execute the setfilelock request. | |
2110 | if (req->may_write() && req->get_op() != CEPH_MDS_OP_SETFILELOCK && | |
2111 | reply->get_result() == 0 && session) { | |
2112 | inodeno_t created = mdr->alloc_ino ? mdr->alloc_ino : mdr->used_prealloc_ino; | |
2113 | session->add_completed_request(mdr->reqid.tid, created); | |
2114 | if (mdr->ls) { | |
2115 | mdr->ls->touched_sessions.insert(session->info.inst.name); | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | // give any preallocated inos to the session | |
2120 | apply_allocated_inos(mdr, session); | |
2121 | ||
2122 | // get tracei/tracedn from mdr? | |
7c673cae FG |
2123 | CInode *tracei = mdr->tracei; |
2124 | CDentry *tracedn = mdr->tracedn; | |
2125 | ||
2126 | bool is_replay = mdr->client_request->is_replay(); | |
2127 | bool did_early_reply = mdr->did_early_reply; | |
2128 | entity_inst_t client_inst = req->get_source_inst(); | |
7c673cae FG |
2129 | |
2130 | if (!did_early_reply && !is_replay) { | |
2131 | ||
2132 | mds->logger->inc(l_mds_reply); | |
2133 | utime_t lat = ceph_clock_now() - mdr->client_request->get_recv_stamp(); | |
2134 | mds->logger->tinc(l_mds_reply_latency, lat); | |
81eedcae | 2135 | if (session && client_inst.name.is_client()) { |
91327a77 AA |
2136 | mds->sessionmap.hit_session(session); |
2137 | } | |
2138 | perf_gather_op_latency(req, lat); | |
7c673cae FG |
2139 | dout(20) << "lat " << lat << dendl; |
2140 | ||
2141 | if (tracei) | |
2142 | mdr->cap_releases.erase(tracei->vino()); | |
2143 | if (tracedn) | |
2144 | mdr->cap_releases.erase(tracedn->get_dir()->get_inode()->vino()); | |
2145 | } | |
2146 | ||
2147 | // drop non-rdlocks before replying, so that we can issue leases | |
2148 | mdcache->request_drop_non_rdlocks(mdr); | |
2149 | ||
2150 | // reply at all? | |
81eedcae | 2151 | if (session && !client_inst.name.is_mds()) { |
7c673cae FG |
2152 | // send reply. |
2153 | if (!did_early_reply && // don't issue leases if we sent an earlier reply already | |
2154 | (tracei || tracedn)) { | |
2155 | if (is_replay) { | |
2156 | if (tracei) | |
2157 | mdcache->try_reconnect_cap(tracei, session); | |
2158 | } else { | |
2159 | // include metadata in reply | |
9f95a23c | 2160 | set_trace_dist(reply, tracei, tracedn, mdr); |
7c673cae FG |
2161 | } |
2162 | } | |
2163 | ||
2164 | // We can set the extra bl unconditionally: if it's already been sent in the | |
2165 | // early_reply, set_extra_bl will have claimed it and reply_extra_bl is empty | |
2166 | reply->set_extra_bl(mdr->reply_extra_bl); | |
2167 | ||
2168 | reply->set_mdsmap_epoch(mds->mdsmap->get_epoch()); | |
11fdf7f2 | 2169 | mds->send_message_client(reply, session); |
7c673cae FG |
2170 | } |
2171 | ||
2172 | if (req->is_queued_for_replay() && | |
2173 | (mdr->has_completed || reply->get_result() < 0)) { | |
2174 | if (reply->get_result() < 0) { | |
2175 | int r = reply->get_result(); | |
2176 | derr << "reply_client_request: failed to replay " << *req | |
2177 | << " error " << r << " (" << cpp_strerror(r) << ")" << dendl; | |
2178 | mds->clog->warn() << "failed to replay " << req->get_reqid() << " error " << r; | |
2179 | } | |
2180 | mds->queue_one_replay(); | |
2181 | } | |
2182 | ||
2183 | // clean up request | |
2184 | mdcache->request_finish(mdr); | |
2185 | ||
2186 | // take a closer look at tracei, if it happens to be a remote link | |
2187 | if (tracei && | |
2188 | tracedn && | |
2189 | tracedn->get_projected_linkage()->is_remote()) { | |
2190 | mdcache->eval_remote(tracedn); | |
2191 | } | |
2192 | } | |
2193 | ||
7c673cae FG |
2194 | /* |
2195 | * pass inode OR dentry (not both, or we may get confused) | |
2196 | * | |
2197 | * trace is in reverse order (i.e. root inode comes last) | |
2198 | */ | |
9f95a23c | 2199 | void Server::set_trace_dist(const ref_t<MClientReply> &reply, |
7c673cae | 2200 | CInode *in, CDentry *dn, |
7c673cae FG |
2201 | MDRequestRef& mdr) |
2202 | { | |
2203 | // skip doing this for debugging purposes? | |
11fdf7f2 | 2204 | if (g_conf()->mds_inject_traceless_reply_probability && |
7c673cae | 2205 | mdr->ls && !mdr->o_trunc && |
11fdf7f2 | 2206 | (rand() % 10000 < g_conf()->mds_inject_traceless_reply_probability * 10000.0)) { |
7c673cae FG |
2207 | dout(5) << "deliberately skipping trace for " << *reply << dendl; |
2208 | return; | |
2209 | } | |
2210 | ||
2211 | // inode, dentry, dir, ..., inode | |
2212 | bufferlist bl; | |
2213 | mds_rank_t whoami = mds->get_nodeid(); | |
9f95a23c TL |
2214 | Session *session = mdr->session; |
2215 | snapid_t snapid = mdr->snapid; | |
7c673cae FG |
2216 | utime_t now = ceph_clock_now(); |
2217 | ||
2218 | dout(20) << "set_trace_dist snapid " << snapid << dendl; | |
2219 | ||
7c673cae FG |
2220 | // realm |
2221 | if (snapid == CEPH_NOSNAP) { | |
2222 | SnapRealm *realm; | |
2223 | if (in) | |
2224 | realm = in->find_snaprealm(); | |
2225 | else | |
2226 | realm = dn->get_dir()->get_inode()->find_snaprealm(); | |
2227 | reply->snapbl = realm->get_snap_trace(); | |
2228 | dout(10) << "set_trace_dist snaprealm " << *realm << " len=" << reply->snapbl.length() << dendl; | |
2229 | } | |
2230 | ||
2231 | // dir + dentry? | |
2232 | if (dn) { | |
2233 | reply->head.is_dentry = 1; | |
2234 | CDir *dir = dn->get_dir(); | |
2235 | CInode *diri = dir->get_inode(); | |
2236 | ||
2237 | diri->encode_inodestat(bl, session, NULL, snapid); | |
2238 | dout(20) << "set_trace_dist added diri " << *diri << dendl; | |
2239 | ||
2240 | #ifdef MDS_VERIFY_FRAGSTAT | |
2241 | if (dir->is_complete()) | |
2242 | dir->verify_fragstat(); | |
2243 | #endif | |
11fdf7f2 TL |
2244 | DirStat ds; |
2245 | ds.frag = dir->get_frag(); | |
2246 | ds.auth = dir->get_dir_auth().first; | |
f91f0fd5 | 2247 | if (dir->is_auth() && !forward_all_requests_to_auth) |
11fdf7f2 TL |
2248 | dir->get_dist_spec(ds.dist, whoami); |
2249 | ||
2250 | dir->encode_dirstat(bl, session->info, ds); | |
7c673cae FG |
2251 | dout(20) << "set_trace_dist added dir " << *dir << dendl; |
2252 | ||
11fdf7f2 | 2253 | encode(dn->get_name(), bl); |
9f95a23c TL |
2254 | |
2255 | int lease_mask = 0; | |
2256 | CDentry::linkage_t *dnl = dn->get_linkage(mdr->get_client(), mdr); | |
2257 | if (dnl->is_primary()) { | |
2258 | ceph_assert(dnl->get_inode() == in); | |
2259 | lease_mask = CEPH_LEASE_PRIMARY_LINK; | |
2260 | } else { | |
2261 | if (dnl->is_remote()) | |
2262 | ceph_assert(dnl->get_remote_ino() == in->ino()); | |
2263 | else | |
2264 | ceph_assert(!in); | |
11fdf7f2 | 2265 | } |
9f95a23c | 2266 | mds->locker->issue_client_lease(dn, mdr, lease_mask, now, bl); |
7c673cae FG |
2267 | dout(20) << "set_trace_dist added dn " << snapid << " " << *dn << dendl; |
2268 | } else | |
2269 | reply->head.is_dentry = 0; | |
2270 | ||
2271 | // inode | |
2272 | if (in) { | |
2273 | in->encode_inodestat(bl, session, NULL, snapid, 0, mdr->getattr_caps); | |
2274 | dout(20) << "set_trace_dist added in " << *in << dendl; | |
2275 | reply->head.is_target = 1; | |
2276 | } else | |
2277 | reply->head.is_target = 0; | |
2278 | ||
2279 | reply->set_trace(bl); | |
2280 | } | |
2281 | ||
9f95a23c | 2282 | void Server::handle_client_request(const cref_t<MClientRequest> &req) |
7c673cae FG |
2283 | { |
2284 | dout(4) << "handle_client_request " << *req << dendl; | |
2285 | ||
2286 | if (mds->logger) | |
2287 | mds->logger->inc(l_mds_request); | |
2288 | if (logger) | |
2289 | logger->inc(l_mdss_handle_client_request); | |
2290 | ||
2291 | if (!mdcache->is_open()) { | |
2292 | dout(5) << "waiting for root" << dendl; | |
2293 | mdcache->wait_for_open(new C_MDS_RetryMessage(mds, req)); | |
2294 | return; | |
2295 | } | |
2296 | ||
92f5a8d4 | 2297 | bool sessionclosed_isok = replay_unsafe_with_closed_session; |
7c673cae FG |
2298 | // active session? |
2299 | Session *session = 0; | |
2300 | if (req->get_source().is_client()) { | |
94b18763 | 2301 | session = mds->get_session(req); |
7c673cae FG |
2302 | if (!session) { |
2303 | dout(5) << "no session for " << req->get_source() << ", dropping" << dendl; | |
92f5a8d4 | 2304 | } else if ((session->is_closed() && (!mds->is_clientreplay() || !sessionclosed_isok)) || |
7c673cae FG |
2305 | session->is_closing() || |
2306 | session->is_killing()) { | |
2307 | dout(5) << "session closed|closing|killing, dropping" << dendl; | |
2308 | session = NULL; | |
2309 | } | |
2310 | if (!session) { | |
2311 | if (req->is_queued_for_replay()) | |
2312 | mds->queue_one_replay(); | |
7c673cae FG |
2313 | return; |
2314 | } | |
2315 | } | |
2316 | ||
2317 | // old mdsmap? | |
2318 | if (req->get_mdsmap_epoch() < mds->mdsmap->get_epoch()) { | |
2319 | // send it? hrm, this isn't ideal; they may get a lot of copies if | |
2320 | // they have a high request rate. | |
2321 | } | |
2322 | ||
2323 | // completed request? | |
2324 | bool has_completed = false; | |
2325 | if (req->is_replay() || req->get_retry_attempt()) { | |
11fdf7f2 | 2326 | ceph_assert(session); |
7c673cae FG |
2327 | inodeno_t created; |
2328 | if (session->have_completed_request(req->get_reqid().tid, &created)) { | |
2329 | has_completed = true; | |
92f5a8d4 TL |
2330 | if (!session->is_open()) |
2331 | return; | |
7c673cae FG |
2332 | // Don't send traceless reply if the completed request has created |
2333 | // new inode. Treat the request as lookup request instead. | |
2334 | if (req->is_replay() || | |
2335 | ((created == inodeno_t() || !mds->is_clientreplay()) && | |
2336 | req->get_op() != CEPH_MDS_OP_OPEN && | |
2337 | req->get_op() != CEPH_MDS_OP_CREATE)) { | |
2338 | dout(5) << "already completed " << req->get_reqid() << dendl; | |
9f95a23c | 2339 | auto reply = make_message<MClientReply>(*req, 0); |
7c673cae FG |
2340 | if (created != inodeno_t()) { |
2341 | bufferlist extra; | |
11fdf7f2 | 2342 | encode(created, extra); |
7c673cae FG |
2343 | reply->set_extra_bl(extra); |
2344 | } | |
11fdf7f2 | 2345 | mds->send_message_client(reply, session); |
7c673cae FG |
2346 | |
2347 | if (req->is_queued_for_replay()) | |
2348 | mds->queue_one_replay(); | |
2349 | ||
7c673cae FG |
2350 | return; |
2351 | } | |
2352 | if (req->get_op() != CEPH_MDS_OP_OPEN && | |
2353 | req->get_op() != CEPH_MDS_OP_CREATE) { | |
2354 | dout(10) << " completed request which created new inode " << created | |
2355 | << ", convert it to lookup request" << dendl; | |
2356 | req->head.op = req->get_dentry_wanted() ? CEPH_MDS_OP_LOOKUP : CEPH_MDS_OP_GETATTR; | |
2357 | req->head.args.getattr.mask = CEPH_STAT_CAP_INODE_ALL; | |
2358 | } | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | // trim completed_request list | |
2363 | if (req->get_oldest_client_tid() > 0) { | |
2364 | dout(15) << " oldest_client_tid=" << req->get_oldest_client_tid() << dendl; | |
11fdf7f2 | 2365 | ceph_assert(session); |
7c673cae FG |
2366 | if (session->trim_completed_requests(req->get_oldest_client_tid())) { |
2367 | // Sessions 'completed_requests' was dirtied, mark it to be | |
2368 | // potentially flushed at segment expiry. | |
2369 | mdlog->get_current_segment()->touched_sessions.insert(session->info.inst.name); | |
2370 | ||
2371 | if (session->get_num_trim_requests_warnings() > 0 && | |
11fdf7f2 | 2372 | session->get_num_completed_requests() * 2 < g_conf()->mds_max_completed_requests) |
7c673cae FG |
2373 | session->reset_num_trim_requests_warnings(); |
2374 | } else { | |
2375 | if (session->get_num_completed_requests() >= | |
11fdf7f2 | 2376 | (g_conf()->mds_max_completed_requests << session->get_num_trim_requests_warnings())) { |
7c673cae FG |
2377 | session->inc_num_trim_requests_warnings(); |
2378 | stringstream ss; | |
2379 | ss << "client." << session->get_client() << " does not advance its oldest_client_tid (" | |
2380 | << req->get_oldest_client_tid() << "), " | |
2381 | << session->get_num_completed_requests() | |
2382 | << " completed requests recorded in session\n"; | |
2383 | mds->clog->warn() << ss.str(); | |
2384 | dout(20) << __func__ << " " << ss.str() << dendl; | |
2385 | } | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | // register + dispatch | |
2390 | MDRequestRef mdr = mdcache->request_start(req); | |
2391 | if (!mdr.get()) | |
2392 | return; | |
2393 | ||
2394 | if (session) { | |
2395 | mdr->session = session; | |
2396 | session->requests.push_back(&mdr->item_session_request); | |
2397 | } | |
2398 | ||
2399 | if (has_completed) | |
2400 | mdr->has_completed = true; | |
2401 | ||
2402 | // process embedded cap releases? | |
2403 | // (only if NOT replay!) | |
2404 | if (!req->releases.empty() && req->get_source().is_client() && !req->is_replay()) { | |
2405 | client_t client = req->get_source().num(); | |
11fdf7f2 TL |
2406 | for (const auto &r : req->releases) { |
2407 | mds->locker->process_request_cap_release(mdr, client, r.item, r.dname); | |
2408 | } | |
7c673cae FG |
2409 | req->releases.clear(); |
2410 | } | |
2411 | ||
2412 | dispatch_client_request(mdr); | |
2413 | return; | |
2414 | } | |
2415 | ||
2416 | void Server::handle_osd_map() | |
2417 | { | |
2418 | /* Note that we check the OSDMAP_FULL flag directly rather than | |
2419 | * using osdmap_full_flag(), because we want to know "is the flag set" | |
2420 | * rather than "does the flag apply to us?" */ | |
2421 | mds->objecter->with_osdmap([this](const OSDMap& o) { | |
b32b8144 FG |
2422 | auto pi = o.get_pg_pool(mds->mdsmap->get_metadata_pool()); |
2423 | is_full = pi && pi->has_flag(pg_pool_t::FLAG_FULL); | |
7c673cae FG |
2424 | dout(7) << __func__ << ": full = " << is_full << " epoch = " |
2425 | << o.get_epoch() << dendl; | |
2426 | }); | |
2427 | } | |
2428 | ||
2429 | void Server::dispatch_client_request(MDRequestRef& mdr) | |
2430 | { | |
2431 | // we shouldn't be waiting on anyone. | |
11fdf7f2 | 2432 | ceph_assert(!mdr->has_more() || mdr->more()->waiting_on_slave.empty()); |
7c673cae FG |
2433 | |
2434 | if (mdr->killed) { | |
2435 | dout(10) << "request " << *mdr << " was killed" << dendl; | |
9f95a23c TL |
2436 | //if the mdr is a "batch_op" and it has followers, pick a follower as |
2437 | //the new "head of the batch ops" and go on processing the new one. | |
f91f0fd5 TL |
2438 | if (mdr->is_batch_head()) { |
2439 | int mask = mdr->client_request->head.args.getattr.mask; | |
2440 | auto it = mdr->batch_op_map->find(mask); | |
2441 | auto new_batch_head = it->second->find_new_head(); | |
2442 | if (!new_batch_head) { | |
2443 | mdr->batch_op_map->erase(it); | |
9f95a23c TL |
2444 | return; |
2445 | } | |
f91f0fd5 | 2446 | mdr = std::move(new_batch_head); |
9f95a23c TL |
2447 | } else { |
2448 | return; | |
2449 | } | |
94b18763 FG |
2450 | } else if (mdr->aborted) { |
2451 | mdr->aborted = false; | |
2452 | mdcache->request_kill(mdr); | |
2453 | return; | |
7c673cae FG |
2454 | } |
2455 | ||
9f95a23c | 2456 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
2457 | |
2458 | if (logger) logger->inc(l_mdss_dispatch_client_request); | |
2459 | ||
2460 | dout(7) << "dispatch_client_request " << *req << dendl; | |
2461 | ||
9f95a23c TL |
2462 | if (req->may_write() && mdcache->is_readonly()) { |
2463 | dout(10) << " read-only FS" << dendl; | |
2464 | respond_to_request(mdr, -EROFS); | |
2465 | return; | |
2466 | } | |
2467 | if (mdr->has_more() && mdr->more()->slave_error) { | |
2468 | dout(10) << " got error from slaves" << dendl; | |
2469 | respond_to_request(mdr, mdr->more()->slave_error); | |
2470 | return; | |
7c673cae FG |
2471 | } |
2472 | ||
2473 | if (is_full) { | |
2474 | if (req->get_op() == CEPH_MDS_OP_SETLAYOUT || | |
2475 | req->get_op() == CEPH_MDS_OP_SETDIRLAYOUT || | |
2476 | req->get_op() == CEPH_MDS_OP_SETLAYOUT || | |
2477 | req->get_op() == CEPH_MDS_OP_RMXATTR || | |
2478 | req->get_op() == CEPH_MDS_OP_SETXATTR || | |
2479 | req->get_op() == CEPH_MDS_OP_CREATE || | |
2480 | req->get_op() == CEPH_MDS_OP_SYMLINK || | |
2481 | req->get_op() == CEPH_MDS_OP_MKSNAP || | |
2482 | ((req->get_op() == CEPH_MDS_OP_LINK || | |
2483 | req->get_op() == CEPH_MDS_OP_RENAME) && | |
2484 | (!mdr->has_more() || mdr->more()->witnessed.empty())) // haven't started slave request | |
2485 | ) { | |
2486 | ||
2487 | dout(20) << __func__ << ": full, responding ENOSPC to op " << ceph_mds_op_name(req->get_op()) << dendl; | |
2488 | respond_to_request(mdr, -ENOSPC); | |
2489 | return; | |
2490 | } else { | |
2491 | dout(20) << __func__ << ": full, permitting op " << ceph_mds_op_name(req->get_op()) << dendl; | |
2492 | } | |
2493 | } | |
2494 | ||
2495 | switch (req->get_op()) { | |
2496 | case CEPH_MDS_OP_LOOKUPHASH: | |
2497 | case CEPH_MDS_OP_LOOKUPINO: | |
2498 | handle_client_lookup_ino(mdr, false, false); | |
2499 | break; | |
2500 | case CEPH_MDS_OP_LOOKUPPARENT: | |
2501 | handle_client_lookup_ino(mdr, true, false); | |
2502 | break; | |
2503 | case CEPH_MDS_OP_LOOKUPNAME: | |
2504 | handle_client_lookup_ino(mdr, false, true); | |
2505 | break; | |
2506 | ||
2507 | // inodes ops. | |
2508 | case CEPH_MDS_OP_LOOKUP: | |
2509 | handle_client_getattr(mdr, true); | |
2510 | break; | |
2511 | ||
2512 | case CEPH_MDS_OP_LOOKUPSNAP: | |
2513 | // lookupsnap does not reference a CDentry; treat it as a getattr | |
2514 | case CEPH_MDS_OP_GETATTR: | |
2515 | handle_client_getattr(mdr, false); | |
2516 | break; | |
2517 | ||
2518 | case CEPH_MDS_OP_SETATTR: | |
2519 | handle_client_setattr(mdr); | |
2520 | break; | |
2521 | case CEPH_MDS_OP_SETLAYOUT: | |
2522 | handle_client_setlayout(mdr); | |
2523 | break; | |
2524 | case CEPH_MDS_OP_SETDIRLAYOUT: | |
2525 | handle_client_setdirlayout(mdr); | |
2526 | break; | |
2527 | case CEPH_MDS_OP_SETXATTR: | |
2528 | handle_client_setxattr(mdr); | |
2529 | break; | |
2530 | case CEPH_MDS_OP_RMXATTR: | |
2531 | handle_client_removexattr(mdr); | |
2532 | break; | |
2533 | ||
2534 | case CEPH_MDS_OP_READDIR: | |
2535 | handle_client_readdir(mdr); | |
2536 | break; | |
2537 | ||
2538 | case CEPH_MDS_OP_SETFILELOCK: | |
2539 | handle_client_file_setlock(mdr); | |
2540 | break; | |
2541 | ||
2542 | case CEPH_MDS_OP_GETFILELOCK: | |
2543 | handle_client_file_readlock(mdr); | |
2544 | break; | |
2545 | ||
2546 | // funky. | |
2547 | case CEPH_MDS_OP_CREATE: | |
2548 | if (mdr->has_completed) | |
2549 | handle_client_open(mdr); // already created.. just open | |
2550 | else | |
2551 | handle_client_openc(mdr); | |
2552 | break; | |
2553 | ||
2554 | case CEPH_MDS_OP_OPEN: | |
2555 | handle_client_open(mdr); | |
2556 | break; | |
2557 | ||
2558 | // namespace. | |
2559 | // no prior locks. | |
2560 | case CEPH_MDS_OP_MKNOD: | |
2561 | handle_client_mknod(mdr); | |
2562 | break; | |
2563 | case CEPH_MDS_OP_LINK: | |
2564 | handle_client_link(mdr); | |
2565 | break; | |
2566 | case CEPH_MDS_OP_UNLINK: | |
2567 | case CEPH_MDS_OP_RMDIR: | |
2568 | handle_client_unlink(mdr); | |
2569 | break; | |
2570 | case CEPH_MDS_OP_RENAME: | |
2571 | handle_client_rename(mdr); | |
2572 | break; | |
2573 | case CEPH_MDS_OP_MKDIR: | |
2574 | handle_client_mkdir(mdr); | |
2575 | break; | |
2576 | case CEPH_MDS_OP_SYMLINK: | |
2577 | handle_client_symlink(mdr); | |
2578 | break; | |
2579 | ||
2580 | ||
2581 | // snaps | |
2582 | case CEPH_MDS_OP_LSSNAP: | |
2583 | handle_client_lssnap(mdr); | |
2584 | break; | |
2585 | case CEPH_MDS_OP_MKSNAP: | |
2586 | handle_client_mksnap(mdr); | |
2587 | break; | |
2588 | case CEPH_MDS_OP_RMSNAP: | |
2589 | handle_client_rmsnap(mdr); | |
2590 | break; | |
2591 | case CEPH_MDS_OP_RENAMESNAP: | |
2592 | handle_client_renamesnap(mdr); | |
2593 | break; | |
2594 | ||
2595 | default: | |
2596 | dout(1) << " unknown client op " << req->get_op() << dendl; | |
2597 | respond_to_request(mdr, -EOPNOTSUPP); | |
2598 | } | |
2599 | } | |
2600 | ||
2601 | ||
2602 | // --------------------------------------- | |
2603 | // SLAVE REQUESTS | |
2604 | ||
9f95a23c | 2605 | void Server::handle_slave_request(const cref_t<MMDSSlaveRequest> &m) |
7c673cae FG |
2606 | { |
2607 | dout(4) << "handle_slave_request " << m->get_reqid() << " from " << m->get_source() << dendl; | |
2608 | mds_rank_t from = mds_rank_t(m->get_source().num()); | |
2609 | ||
2610 | if (logger) logger->inc(l_mdss_handle_slave_request); | |
2611 | ||
2612 | // reply? | |
2613 | if (m->is_reply()) | |
2614 | return handle_slave_request_reply(m); | |
2615 | ||
2616 | // the purpose of rename notify is enforcing causal message ordering. making sure | |
2617 | // bystanders have received all messages from rename srcdn's auth MDS. | |
2618 | if (m->get_op() == MMDSSlaveRequest::OP_RENAMENOTIFY) { | |
9f95a23c | 2619 | auto reply = make_message<MMDSSlaveRequest>(m->get_reqid(), m->get_attempt(), MMDSSlaveRequest::OP_RENAMENOTIFYACK); |
7c673cae | 2620 | mds->send_message(reply, m->get_connection()); |
7c673cae FG |
2621 | return; |
2622 | } | |
2623 | ||
2624 | CDentry *straydn = NULL; | |
11fdf7f2 | 2625 | if (m->straybl.length() > 0) { |
9f95a23c | 2626 | mdcache->decode_replica_stray(straydn, m->straybl, from); |
11fdf7f2 TL |
2627 | ceph_assert(straydn); |
2628 | m->straybl.clear(); | |
7c673cae FG |
2629 | } |
2630 | ||
9f95a23c TL |
2631 | if (!mds->is_clientreplay() && !mds->is_active() && !mds->is_stopping()) { |
2632 | dout(3) << "not clientreplay|active yet, waiting" << dendl; | |
2633 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
2634 | return; | |
2635 | } | |
2636 | ||
7c673cae FG |
2637 | // am i a new slave? |
2638 | MDRequestRef mdr; | |
2639 | if (mdcache->have_request(m->get_reqid())) { | |
2640 | // existing? | |
2641 | mdr = mdcache->request_get(m->get_reqid()); | |
2642 | ||
2643 | // is my request newer? | |
2644 | if (mdr->attempt > m->get_attempt()) { | |
2645 | dout(10) << "local request " << *mdr << " attempt " << mdr->attempt << " > " << m->get_attempt() | |
2646 | << ", dropping " << *m << dendl; | |
7c673cae FG |
2647 | return; |
2648 | } | |
2649 | ||
7c673cae FG |
2650 | if (mdr->attempt < m->get_attempt()) { |
2651 | // mine is old, close it out | |
2652 | dout(10) << "local request " << *mdr << " attempt " << mdr->attempt << " < " << m->get_attempt() | |
2653 | << ", closing out" << dendl; | |
2654 | mdcache->request_finish(mdr); | |
2655 | mdr.reset(); | |
2656 | } else if (mdr->slave_to_mds != from) { | |
2657 | dout(10) << "local request " << *mdr << " not slave to mds." << from << dendl; | |
7c673cae FG |
2658 | return; |
2659 | } | |
2660 | ||
9f95a23c TL |
2661 | // may get these while mdr->slave_request is non-null |
2662 | if (m->get_op() == MMDSSlaveRequest::OP_DROPLOCKS) { | |
2663 | mds->locker->drop_locks(mdr.get()); | |
2664 | return; | |
2665 | } | |
2666 | if (m->get_op() == MMDSSlaveRequest::OP_FINISH) { | |
2667 | if (m->is_abort()) { | |
2668 | mdr->aborted = true; | |
2669 | if (mdr->slave_request) { | |
2670 | // only abort on-going xlock, wrlock and auth pin | |
2671 | ceph_assert(!mdr->slave_did_prepare()); | |
2672 | } else { | |
2673 | mdcache->request_finish(mdr); | |
2674 | } | |
7c673cae | 2675 | } else { |
9f95a23c TL |
2676 | if (m->inode_export.length() > 0) |
2677 | mdr->more()->inode_import = m->inode_export; | |
2678 | // finish off request. | |
7c673cae FG |
2679 | mdcache->request_finish(mdr); |
2680 | } | |
2681 | return; | |
2682 | } | |
2683 | } | |
2684 | if (!mdr.get()) { | |
2685 | // new? | |
2686 | if (m->get_op() == MMDSSlaveRequest::OP_FINISH) { | |
2687 | dout(10) << "missing slave request for " << m->get_reqid() | |
2688 | << " OP_FINISH, must have lost race with a forward" << dendl; | |
7c673cae FG |
2689 | return; |
2690 | } | |
2691 | mdr = mdcache->request_start_slave(m->get_reqid(), m->get_attempt(), m); | |
2692 | mdr->set_op_stamp(m->op_stamp); | |
2693 | } | |
11fdf7f2 | 2694 | ceph_assert(mdr->slave_request == 0); // only one at a time, please! |
7c673cae FG |
2695 | |
2696 | if (straydn) { | |
2697 | mdr->pin(straydn); | |
2698 | mdr->straydn = straydn; | |
2699 | } | |
2700 | ||
9f95a23c TL |
2701 | if (mds->is_clientreplay() && !mds->mdsmap->is_clientreplay(from) && |
2702 | mdr->locks.empty()) { | |
7c673cae FG |
2703 | dout(3) << "not active yet, waiting" << dendl; |
2704 | mds->wait_for_active(new C_MDS_RetryMessage(mds, m)); | |
2705 | return; | |
2706 | } | |
2707 | ||
91327a77 | 2708 | mdr->reset_slave_request(m); |
7c673cae FG |
2709 | |
2710 | dispatch_slave_request(mdr); | |
2711 | } | |
2712 | ||
9f95a23c | 2713 | void Server::handle_slave_request_reply(const cref_t<MMDSSlaveRequest> &m) |
7c673cae FG |
2714 | { |
2715 | mds_rank_t from = mds_rank_t(m->get_source().num()); | |
2716 | ||
2717 | if (!mds->is_clientreplay() && !mds->is_active() && !mds->is_stopping()) { | |
2718 | metareqid_t r = m->get_reqid(); | |
2719 | if (!mdcache->have_uncommitted_master(r, from)) { | |
2720 | dout(10) << "handle_slave_request_reply ignoring slave reply from mds." | |
2721 | << from << " reqid " << r << dendl; | |
7c673cae FG |
2722 | return; |
2723 | } | |
2724 | dout(3) << "not clientreplay|active yet, waiting" << dendl; | |
2725 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
2726 | return; | |
2727 | } | |
2728 | ||
2729 | if (m->get_op() == MMDSSlaveRequest::OP_COMMITTED) { | |
2730 | metareqid_t r = m->get_reqid(); | |
2731 | mdcache->committed_master_slave(r, from); | |
7c673cae FG |
2732 | return; |
2733 | } | |
2734 | ||
2735 | MDRequestRef mdr = mdcache->request_get(m->get_reqid()); | |
2736 | if (m->get_attempt() != mdr->attempt) { | |
2737 | dout(10) << "handle_slave_request_reply " << *mdr << " ignoring reply from other attempt " | |
2738 | << m->get_attempt() << dendl; | |
7c673cae FG |
2739 | return; |
2740 | } | |
2741 | ||
2742 | switch (m->get_op()) { | |
2743 | case MMDSSlaveRequest::OP_XLOCKACK: | |
2744 | { | |
2745 | // identify lock, master request | |
2746 | SimpleLock *lock = mds->locker->get_lock(m->get_lock_type(), | |
2747 | m->get_object_info()); | |
2748 | mdr->more()->slaves.insert(from); | |
11fdf7f2 | 2749 | lock->decode_locked_state(m->get_lock_data()); |
7c673cae | 2750 | dout(10) << "got remote xlock on " << *lock << " on " << *lock->get_parent() << dendl; |
9f95a23c | 2751 | mdr->emplace_lock(lock, MutationImpl::LockOp::XLOCK); |
7c673cae FG |
2752 | mdr->finish_locking(lock); |
2753 | lock->get_xlock(mdr, mdr->get_client()); | |
2754 | ||
11fdf7f2 | 2755 | ceph_assert(mdr->more()->waiting_on_slave.count(from)); |
7c673cae | 2756 | mdr->more()->waiting_on_slave.erase(from); |
11fdf7f2 | 2757 | ceph_assert(mdr->more()->waiting_on_slave.empty()); |
7c673cae FG |
2758 | mdcache->dispatch_request(mdr); |
2759 | } | |
2760 | break; | |
2761 | ||
2762 | case MMDSSlaveRequest::OP_WRLOCKACK: | |
2763 | { | |
2764 | // identify lock, master request | |
2765 | SimpleLock *lock = mds->locker->get_lock(m->get_lock_type(), | |
2766 | m->get_object_info()); | |
2767 | mdr->more()->slaves.insert(from); | |
2768 | dout(10) << "got remote wrlock on " << *lock << " on " << *lock->get_parent() << dendl; | |
9f95a23c | 2769 | auto it = mdr->emplace_lock(lock, MutationImpl::LockOp::REMOTE_WRLOCK, from); |
11fdf7f2 TL |
2770 | ceph_assert(it->is_remote_wrlock()); |
2771 | ceph_assert(it->wrlock_target == from); | |
2772 | ||
7c673cae FG |
2773 | mdr->finish_locking(lock); |
2774 | ||
11fdf7f2 | 2775 | ceph_assert(mdr->more()->waiting_on_slave.count(from)); |
7c673cae | 2776 | mdr->more()->waiting_on_slave.erase(from); |
11fdf7f2 | 2777 | ceph_assert(mdr->more()->waiting_on_slave.empty()); |
7c673cae FG |
2778 | mdcache->dispatch_request(mdr); |
2779 | } | |
2780 | break; | |
2781 | ||
2782 | case MMDSSlaveRequest::OP_AUTHPINACK: | |
2783 | handle_slave_auth_pin_ack(mdr, m); | |
2784 | break; | |
2785 | ||
2786 | case MMDSSlaveRequest::OP_LINKPREPACK: | |
2787 | handle_slave_link_prep_ack(mdr, m); | |
2788 | break; | |
2789 | ||
2790 | case MMDSSlaveRequest::OP_RMDIRPREPACK: | |
2791 | handle_slave_rmdir_prep_ack(mdr, m); | |
2792 | break; | |
2793 | ||
2794 | case MMDSSlaveRequest::OP_RENAMEPREPACK: | |
2795 | handle_slave_rename_prep_ack(mdr, m); | |
2796 | break; | |
2797 | ||
2798 | case MMDSSlaveRequest::OP_RENAMENOTIFYACK: | |
2799 | handle_slave_rename_notify_ack(mdr, m); | |
2800 | break; | |
2801 | ||
2802 | default: | |
2803 | ceph_abort(); | |
2804 | } | |
7c673cae FG |
2805 | } |
2806 | ||
7c673cae FG |
2807 | void Server::dispatch_slave_request(MDRequestRef& mdr) |
2808 | { | |
2809 | dout(7) << "dispatch_slave_request " << *mdr << " " << *mdr->slave_request << dendl; | |
2810 | ||
2811 | if (mdr->aborted) { | |
2812 | dout(7) << " abort flag set, finishing" << dendl; | |
2813 | mdcache->request_finish(mdr); | |
2814 | return; | |
2815 | } | |
2816 | ||
2817 | if (logger) logger->inc(l_mdss_dispatch_slave_request); | |
2818 | ||
2819 | int op = mdr->slave_request->get_op(); | |
2820 | switch (op) { | |
2821 | case MMDSSlaveRequest::OP_XLOCK: | |
2822 | case MMDSSlaveRequest::OP_WRLOCK: | |
2823 | { | |
2824 | // identify object | |
2825 | SimpleLock *lock = mds->locker->get_lock(mdr->slave_request->get_lock_type(), | |
2826 | mdr->slave_request->get_object_info()); | |
2827 | ||
2828 | if (!lock) { | |
2829 | dout(10) << "don't have object, dropping" << dendl; | |
2830 | ceph_abort(); // can this happen, if we auth pinned properly. | |
2831 | } | |
2832 | if (op == MMDSSlaveRequest::OP_XLOCK && !lock->get_parent()->is_auth()) { | |
2833 | dout(10) << "not auth for remote xlock attempt, dropping on " | |
2834 | << *lock << " on " << *lock->get_parent() << dendl; | |
2835 | } else { | |
2836 | // use acquire_locks so that we get auth_pinning. | |
11fdf7f2 TL |
2837 | MutationImpl::LockOpVec lov; |
2838 | for (const auto& p : mdr->locks) { | |
2839 | if (p.is_xlock()) | |
2840 | lov.add_xlock(p.lock); | |
2841 | else if (p.is_wrlock()) | |
2842 | lov.add_wrlock(p.lock); | |
2843 | } | |
7c673cae FG |
2844 | |
2845 | int replycode = 0; | |
2846 | switch (op) { | |
2847 | case MMDSSlaveRequest::OP_XLOCK: | |
11fdf7f2 | 2848 | lov.add_xlock(lock); |
7c673cae FG |
2849 | replycode = MMDSSlaveRequest::OP_XLOCKACK; |
2850 | break; | |
2851 | case MMDSSlaveRequest::OP_WRLOCK: | |
11fdf7f2 | 2852 | lov.add_wrlock(lock); |
7c673cae FG |
2853 | replycode = MMDSSlaveRequest::OP_WRLOCKACK; |
2854 | break; | |
2855 | } | |
2856 | ||
11fdf7f2 | 2857 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
2858 | return; |
2859 | ||
2860 | // ack | |
9f95a23c | 2861 | auto r = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, replycode); |
7c673cae FG |
2862 | r->set_lock_type(lock->get_type()); |
2863 | lock->get_parent()->set_object_info(r->get_object_info()); | |
11fdf7f2 TL |
2864 | if (replycode == MMDSSlaveRequest::OP_XLOCKACK) |
2865 | lock->encode_locked_state(r->get_lock_data()); | |
7c673cae FG |
2866 | mds->send_message(r, mdr->slave_request->get_connection()); |
2867 | } | |
2868 | ||
2869 | // done. | |
91327a77 | 2870 | mdr->reset_slave_request(); |
7c673cae FG |
2871 | } |
2872 | break; | |
2873 | ||
2874 | case MMDSSlaveRequest::OP_UNXLOCK: | |
2875 | case MMDSSlaveRequest::OP_UNWRLOCK: | |
2876 | { | |
2877 | SimpleLock *lock = mds->locker->get_lock(mdr->slave_request->get_lock_type(), | |
2878 | mdr->slave_request->get_object_info()); | |
11fdf7f2 TL |
2879 | ceph_assert(lock); |
2880 | auto it = mdr->locks.find(lock); | |
2881 | ceph_assert(it != mdr->locks.end()); | |
7c673cae FG |
2882 | bool need_issue = false; |
2883 | switch (op) { | |
2884 | case MMDSSlaveRequest::OP_UNXLOCK: | |
11fdf7f2 | 2885 | mds->locker->xlock_finish(it, mdr.get(), &need_issue); |
7c673cae FG |
2886 | break; |
2887 | case MMDSSlaveRequest::OP_UNWRLOCK: | |
11fdf7f2 | 2888 | mds->locker->wrlock_finish(it, mdr.get(), &need_issue); |
7c673cae FG |
2889 | break; |
2890 | } | |
2891 | if (need_issue) | |
2892 | mds->locker->issue_caps(static_cast<CInode*>(lock->get_parent())); | |
2893 | ||
2894 | // done. no ack necessary. | |
91327a77 | 2895 | mdr->reset_slave_request(); |
7c673cae FG |
2896 | } |
2897 | break; | |
2898 | ||
7c673cae FG |
2899 | case MMDSSlaveRequest::OP_AUTHPIN: |
2900 | handle_slave_auth_pin(mdr); | |
2901 | break; | |
2902 | ||
2903 | case MMDSSlaveRequest::OP_LINKPREP: | |
2904 | case MMDSSlaveRequest::OP_UNLINKPREP: | |
2905 | handle_slave_link_prep(mdr); | |
2906 | break; | |
2907 | ||
2908 | case MMDSSlaveRequest::OP_RMDIRPREP: | |
2909 | handle_slave_rmdir_prep(mdr); | |
2910 | break; | |
2911 | ||
2912 | case MMDSSlaveRequest::OP_RENAMEPREP: | |
2913 | handle_slave_rename_prep(mdr); | |
2914 | break; | |
2915 | ||
7c673cae FG |
2916 | default: |
2917 | ceph_abort(); | |
2918 | } | |
2919 | } | |
2920 | ||
7c673cae FG |
2921 | void Server::handle_slave_auth_pin(MDRequestRef& mdr) |
2922 | { | |
2923 | dout(10) << "handle_slave_auth_pin " << *mdr << dendl; | |
2924 | ||
2925 | // build list of objects | |
2926 | list<MDSCacheObject*> objects; | |
2927 | CInode *auth_pin_freeze = NULL; | |
9f95a23c | 2928 | bool nonblocking = mdr->slave_request->is_nonblocking(); |
7c673cae | 2929 | bool fail = false, wouldblock = false, readonly = false; |
9f95a23c | 2930 | ref_t<MMDSSlaveRequest> reply; |
7c673cae FG |
2931 | |
2932 | if (mdcache->is_readonly()) { | |
2933 | dout(10) << " read-only FS" << dendl; | |
2934 | readonly = true; | |
2935 | fail = true; | |
2936 | } | |
2937 | ||
2938 | if (!fail) { | |
11fdf7f2 TL |
2939 | for (const auto &oi : mdr->slave_request->get_authpins()) { |
2940 | MDSCacheObject *object = mdcache->get_object(oi); | |
7c673cae | 2941 | if (!object) { |
11fdf7f2 | 2942 | dout(10) << " don't have " << oi << dendl; |
7c673cae FG |
2943 | fail = true; |
2944 | break; | |
2945 | } | |
2946 | ||
2947 | objects.push_back(object); | |
11fdf7f2 | 2948 | if (oi == mdr->slave_request->get_authpin_freeze()) |
7c673cae FG |
2949 | auth_pin_freeze = static_cast<CInode*>(object); |
2950 | } | |
2951 | } | |
2952 | ||
2953 | // can we auth pin them? | |
2954 | if (!fail) { | |
9f95a23c TL |
2955 | for (const auto& obj : objects) { |
2956 | if (!obj->is_auth()) { | |
2957 | dout(10) << " not auth for " << *obj << dendl; | |
7c673cae FG |
2958 | fail = true; |
2959 | break; | |
2960 | } | |
9f95a23c | 2961 | if (mdr->is_auth_pinned(obj)) |
7c673cae | 2962 | continue; |
9f95a23c TL |
2963 | if (!mdr->can_auth_pin(obj)) { |
2964 | if (nonblocking) { | |
2965 | dout(10) << " can't auth_pin (freezing?) " << *obj << " nonblocking" << dendl; | |
7c673cae FG |
2966 | fail = true; |
2967 | wouldblock = true; | |
2968 | break; | |
2969 | } | |
2970 | // wait | |
9f95a23c TL |
2971 | dout(10) << " waiting for authpinnable on " << *obj << dendl; |
2972 | obj->add_waiter(CDir::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
7c673cae FG |
2973 | mdr->drop_local_auth_pins(); |
2974 | ||
9f95a23c TL |
2975 | mds->locker->notify_freeze_waiter(obj); |
2976 | goto blocked; | |
7c673cae FG |
2977 | } |
2978 | } | |
2979 | } | |
2980 | ||
9f95a23c | 2981 | if (!fail) { |
7c673cae FG |
2982 | /* freeze authpin wrong inode */ |
2983 | if (mdr->has_more() && mdr->more()->is_freeze_authpin && | |
2984 | mdr->more()->rename_inode != auth_pin_freeze) | |
2985 | mdr->unfreeze_auth_pin(true); | |
2986 | ||
2987 | /* handle_slave_rename_prep() call freeze_inode() to wait for all other operations | |
2988 | * on the source inode to complete. This happens after all locks for the rename | |
2989 | * operation are acquired. But to acquire locks, we need auth pin locks' parent | |
2990 | * objects first. So there is an ABBA deadlock if someone auth pins the source inode | |
2991 | * after locks are acquired and before Server::handle_slave_rename_prep() is called. | |
2992 | * The solution is freeze the inode and prevent other MDRequests from getting new | |
2993 | * auth pins. | |
2994 | */ | |
2995 | if (auth_pin_freeze) { | |
2996 | dout(10) << " freezing auth pin on " << *auth_pin_freeze << dendl; | |
2997 | if (!mdr->freeze_auth_pin(auth_pin_freeze)) { | |
2998 | auth_pin_freeze->add_waiter(CInode::WAIT_FROZEN, new C_MDS_RetryRequest(mdcache, mdr)); | |
2999 | mds->mdlog->flush(); | |
9f95a23c | 3000 | goto blocked; |
7c673cae FG |
3001 | } |
3002 | } | |
7c673cae FG |
3003 | } |
3004 | ||
9f95a23c | 3005 | reply = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_AUTHPINACK); |
7c673cae | 3006 | |
9f95a23c TL |
3007 | if (fail) { |
3008 | mdr->drop_local_auth_pins(); // just in case | |
3009 | if (readonly) | |
3010 | reply->mark_error_rofs(); | |
3011 | if (wouldblock) | |
3012 | reply->mark_error_wouldblock(); | |
3013 | } else { | |
3014 | // auth pin! | |
3015 | for (const auto& obj : objects) { | |
3016 | dout(10) << "auth_pinning " << *obj << dendl; | |
3017 | mdr->auth_pin(obj); | |
3018 | } | |
3019 | // return list of my auth_pins (if any) | |
3020 | for (const auto &p : mdr->object_states) { | |
3021 | if (!p.second.auth_pinned) | |
3022 | continue; | |
3023 | MDSCacheObjectInfo info; | |
3024 | p.first->set_object_info(info); | |
3025 | reply->get_authpins().push_back(info); | |
3026 | if (p.first == (MDSCacheObject*)auth_pin_freeze) | |
3027 | auth_pin_freeze->set_object_info(reply->get_authpin_freeze()); | |
3028 | } | |
3029 | } | |
7c673cae FG |
3030 | |
3031 | mds->send_message_mds(reply, mdr->slave_to_mds); | |
3032 | ||
3033 | // clean up this request | |
91327a77 | 3034 | mdr->reset_slave_request(); |
7c673cae | 3035 | return; |
9f95a23c TL |
3036 | |
3037 | blocked: | |
3038 | if (mdr->slave_request->should_notify_blocking()) { | |
3039 | reply = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_AUTHPINACK); | |
3040 | reply->mark_req_blocked(); | |
3041 | mds->send_message_mds(reply, mdr->slave_to_mds); | |
3042 | mdr->slave_request->clear_notify_blocking(); | |
3043 | } | |
3044 | return; | |
7c673cae FG |
3045 | } |
3046 | ||
9f95a23c | 3047 | void Server::handle_slave_auth_pin_ack(MDRequestRef& mdr, const cref_t<MMDSSlaveRequest> &ack) |
7c673cae FG |
3048 | { |
3049 | dout(10) << "handle_slave_auth_pin_ack on " << *mdr << " " << *ack << dendl; | |
3050 | mds_rank_t from = mds_rank_t(ack->get_source().num()); | |
3051 | ||
9f95a23c TL |
3052 | if (ack->is_req_blocked()) { |
3053 | mdr->disable_lock_cache(); | |
3054 | // slave auth pin is blocked, drop locks to avoid deadlock | |
3055 | mds->locker->drop_locks(mdr.get(), nullptr); | |
3056 | return; | |
3057 | } | |
3058 | ||
7c673cae FG |
3059 | // added auth pins? |
3060 | set<MDSCacheObject*> pinned; | |
11fdf7f2 TL |
3061 | for (const auto &oi : ack->get_authpins()) { |
3062 | MDSCacheObject *object = mdcache->get_object(oi); | |
3063 | ceph_assert(object); // we pinned it | |
7c673cae | 3064 | dout(10) << " remote has pinned " << *object << dendl; |
9f95a23c | 3065 | mdr->set_remote_auth_pinned(object, from); |
11fdf7f2 | 3066 | if (oi == ack->get_authpin_freeze()) |
7c673cae FG |
3067 | mdr->set_remote_frozen_auth_pin(static_cast<CInode *>(object)); |
3068 | pinned.insert(object); | |
3069 | } | |
3070 | ||
3071 | // removed frozen auth pin ? | |
3072 | if (mdr->more()->is_remote_frozen_authpin && | |
3073 | ack->get_authpin_freeze() == MDSCacheObjectInfo()) { | |
9f95a23c TL |
3074 | auto stat_p = mdr->find_object_state(mdr->more()->rename_inode); |
3075 | ceph_assert(stat_p); | |
3076 | if (stat_p->remote_auth_pinned == from) { | |
7c673cae FG |
3077 | mdr->more()->is_remote_frozen_authpin = false; |
3078 | } | |
3079 | } | |
3080 | ||
3081 | // removed auth pins? | |
9f95a23c TL |
3082 | for (auto& p : mdr->object_states) { |
3083 | if (p.second.remote_auth_pinned == MDS_RANK_NONE) | |
3084 | continue; | |
3085 | MDSCacheObject* object = p.first; | |
3086 | if (p.second.remote_auth_pinned == from && pinned.count(object) == 0) { | |
7c673cae | 3087 | dout(10) << " remote has unpinned " << *object << dendl; |
9f95a23c | 3088 | mdr->_clear_remote_auth_pinned(p.second); |
7c673cae FG |
3089 | } |
3090 | } | |
3091 | ||
9f95a23c TL |
3092 | // note slave |
3093 | mdr->more()->slaves.insert(from); | |
3094 | ||
3095 | // clear from waiting list | |
3096 | auto ret = mdr->more()->waiting_on_slave.erase(from); | |
3097 | ceph_assert(ret); | |
3098 | ||
7c673cae FG |
3099 | if (ack->is_error_rofs()) { |
3100 | mdr->more()->slave_error = -EROFS; | |
7c673cae FG |
3101 | } else if (ack->is_error_wouldblock()) { |
3102 | mdr->more()->slave_error = -EWOULDBLOCK; | |
7c673cae | 3103 | } |
7c673cae FG |
3104 | |
3105 | // go again? | |
3106 | if (mdr->more()->waiting_on_slave.empty()) | |
3107 | mdcache->dispatch_request(mdr); | |
3108 | else | |
3109 | dout(10) << "still waiting on slaves " << mdr->more()->waiting_on_slave << dendl; | |
3110 | } | |
3111 | ||
3112 | ||
3113 | // --------------------------------------- | |
3114 | // HELPERS | |
3115 | ||
3116 | ||
3117 | /** | |
3118 | * check whether we are permitted to complete a request | |
3119 | * | |
3120 | * Check whether we have permission to perform the operation specified | |
3121 | * by mask on the given inode, based on the capability in the mdr's | |
3122 | * session. | |
3123 | */ | |
3124 | bool Server::check_access(MDRequestRef& mdr, CInode *in, unsigned mask) | |
3125 | { | |
3126 | if (mdr->session) { | |
3127 | int r = mdr->session->check_access( | |
3128 | in, mask, | |
3129 | mdr->client_request->get_caller_uid(), | |
3130 | mdr->client_request->get_caller_gid(), | |
3131 | &mdr->client_request->get_caller_gid_list(), | |
3132 | mdr->client_request->head.args.setattr.uid, | |
3133 | mdr->client_request->head.args.setattr.gid); | |
3134 | if (r < 0) { | |
3135 | respond_to_request(mdr, r); | |
3136 | return false; | |
3137 | } | |
3138 | } | |
3139 | return true; | |
3140 | } | |
3141 | ||
3142 | /** | |
3143 | * check whether fragment has reached maximum size | |
3144 | * | |
3145 | */ | |
3146 | bool Server::check_fragment_space(MDRequestRef &mdr, CDir *in) | |
3147 | { | |
3148 | const auto size = in->get_frag_size(); | |
11fdf7f2 TL |
3149 | if (size >= g_conf()->mds_bal_fragment_size_max) { |
3150 | dout(10) << "fragment " << *in << " size exceeds " << g_conf()->mds_bal_fragment_size_max << " (ENOSPC)" << dendl; | |
7c673cae FG |
3151 | respond_to_request(mdr, -ENOSPC); |
3152 | return false; | |
3153 | } | |
3154 | ||
3155 | return true; | |
3156 | } | |
3157 | ||
7c673cae FG |
3158 | CDentry* Server::prepare_stray_dentry(MDRequestRef& mdr, CInode *in) |
3159 | { | |
3160 | CDentry *straydn = mdr->straydn; | |
3161 | if (straydn) { | |
3162 | string straydname; | |
3163 | in->name_stray_dentry(straydname); | |
9f95a23c TL |
3164 | ceph_assert(straydn->get_name() == straydname); |
3165 | return straydn; | |
7c673cae FG |
3166 | } |
3167 | ||
3168 | CDir *straydir = mdcache->get_stray_dir(in); | |
3169 | ||
3170 | if (!mdr->client_request->is_replay() && | |
3171 | !check_fragment_space(mdr, straydir)) | |
3172 | return NULL; | |
3173 | ||
3174 | straydn = mdcache->get_or_create_stray_dentry(in); | |
3175 | mdr->straydn = straydn; | |
3176 | mdr->pin(straydn); | |
3177 | return straydn; | |
3178 | } | |
3179 | ||
3180 | /** prepare_new_inode | |
3181 | * | |
3182 | * create a new inode. set c/m/atime. hit dir pop. | |
3183 | */ | |
3184 | CInode* Server::prepare_new_inode(MDRequestRef& mdr, CDir *dir, inodeno_t useino, unsigned mode, | |
3185 | file_layout_t *layout) | |
3186 | { | |
3187 | CInode *in = new CInode(mdcache); | |
3188 | ||
3189 | // Server::prepare_force_open_sessions() can re-open session in closing | |
3190 | // state. In that corner case, session's prealloc_inos are being freed. | |
3191 | // To simplify the code, we disallow using/refilling session's prealloc_ino | |
3192 | // while session is opening. | |
92f5a8d4 | 3193 | bool allow_prealloc_inos = mdr->session->is_open(); |
7c673cae FG |
3194 | |
3195 | // assign ino | |
9f95a23c | 3196 | if (allow_prealloc_inos && (mdr->used_prealloc_ino = in->inode.ino = mdr->session->take_ino(useino))) { |
7c673cae | 3197 | mds->sessionmap.mark_projected(mdr->session); |
7c673cae FG |
3198 | dout(10) << "prepare_new_inode used_prealloc " << mdr->used_prealloc_ino |
3199 | << " (" << mdr->session->info.prealloc_inos | |
3200 | << ", " << mdr->session->info.prealloc_inos.size() << " left)" | |
3201 | << dendl; | |
3202 | } else { | |
3203 | mdr->alloc_ino = | |
92f5a8d4 | 3204 | in->inode.ino = mds->inotable->project_alloc_id(useino); |
7c673cae FG |
3205 | dout(10) << "prepare_new_inode alloc " << mdr->alloc_ino << dendl; |
3206 | } | |
3207 | ||
3208 | if (useino && useino != in->inode.ino) { | |
3209 | dout(0) << "WARNING: client specified " << useino << " and i allocated " << in->inode.ino << dendl; | |
3210 | mds->clog->error() << mdr->client_request->get_source() | |
3211 | << " specified ino " << useino | |
3212 | << " but mds." << mds->get_nodeid() << " allocated " << in->inode.ino; | |
3213 | //ceph_abort(); // just for now. | |
3214 | } | |
3215 | ||
3216 | if (allow_prealloc_inos && | |
11fdf7f2 TL |
3217 | mdr->session->get_num_projected_prealloc_inos() < g_conf()->mds_client_prealloc_inos / 2) { |
3218 | int need = g_conf()->mds_client_prealloc_inos - mdr->session->get_num_projected_prealloc_inos(); | |
7c673cae | 3219 | mds->inotable->project_alloc_ids(mdr->prealloc_inos, need); |
11fdf7f2 | 3220 | ceph_assert(mdr->prealloc_inos.size()); // or else fix projected increment semantics |
7c673cae FG |
3221 | mdr->session->pending_prealloc_inos.insert(mdr->prealloc_inos); |
3222 | mds->sessionmap.mark_projected(mdr->session); | |
3223 | dout(10) << "prepare_new_inode prealloc " << mdr->prealloc_inos << dendl; | |
3224 | } | |
3225 | ||
3226 | in->inode.version = 1; | |
3227 | in->inode.xattr_version = 1; | |
3228 | in->inode.nlink = 1; // FIXME | |
3229 | ||
3230 | in->inode.mode = mode; | |
3231 | ||
92f5a8d4 | 3232 | // FIPS zeroization audit 20191117: this memset is not security related. |
7c673cae FG |
3233 | memset(&in->inode.dir_layout, 0, sizeof(in->inode.dir_layout)); |
3234 | if (in->inode.is_dir()) { | |
11fdf7f2 | 3235 | in->inode.dir_layout.dl_dir_hash = g_conf()->mds_default_dir_hash; |
7c673cae FG |
3236 | } else if (layout) { |
3237 | in->inode.layout = *layout; | |
3238 | } else { | |
3239 | in->inode.layout = mdcache->default_file_layout; | |
3240 | } | |
3241 | ||
3242 | in->inode.truncate_size = -1ull; // not truncated, yet! | |
3243 | in->inode.truncate_seq = 1; /* starting with 1, 0 is kept for no-truncation logic */ | |
3244 | ||
3245 | CInode *diri = dir->get_inode(); | |
3246 | ||
3247 | dout(10) << oct << " dir mode 0" << diri->inode.mode << " new mode 0" << mode << dec << dendl; | |
3248 | ||
3249 | if (diri->inode.mode & S_ISGID) { | |
3250 | dout(10) << " dir is sticky" << dendl; | |
3251 | in->inode.gid = diri->inode.gid; | |
3252 | if (S_ISDIR(mode)) { | |
3253 | dout(10) << " new dir also sticky" << dendl; | |
3254 | in->inode.mode |= S_ISGID; | |
3255 | } | |
3256 | } else | |
3257 | in->inode.gid = mdr->client_request->get_caller_gid(); | |
3258 | ||
3259 | in->inode.uid = mdr->client_request->get_caller_uid(); | |
3260 | ||
3261 | in->inode.btime = in->inode.ctime = in->inode.mtime = in->inode.atime = | |
3262 | mdr->get_op_stamp(); | |
3263 | ||
3264 | in->inode.change_attr = 0; | |
3265 | ||
9f95a23c | 3266 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 3267 | if (req->get_data().length()) { |
11fdf7f2 | 3268 | auto p = req->get_data().cbegin(); |
7c673cae FG |
3269 | |
3270 | // xattrs on new inode? | |
94b18763 | 3271 | CInode::mempool_xattr_map xattrs; |
e306af50 | 3272 | decode_noshare(xattrs, p); |
94b18763 FG |
3273 | for (const auto &p : xattrs) { |
3274 | dout(10) << "prepare_new_inode setting xattr " << p.first << dendl; | |
3275 | auto em = in->xattrs.emplace(std::piecewise_construct, std::forward_as_tuple(p.first), std::forward_as_tuple(p.second)); | |
3276 | if (!em.second) | |
3277 | em.first->second = p.second; | |
7c673cae FG |
3278 | } |
3279 | } | |
3280 | ||
3281 | if (!mds->mdsmap->get_inline_data_enabled() || | |
11fdf7f2 | 3282 | !mdr->session->get_connection()->has_feature(CEPH_FEATURE_MDS_INLINE_DATA)) |
7c673cae FG |
3283 | in->inode.inline_data.version = CEPH_INLINE_NONE; |
3284 | ||
3285 | mdcache->add_inode(in); // add | |
3286 | dout(10) << "prepare_new_inode " << *in << dendl; | |
3287 | return in; | |
3288 | } | |
3289 | ||
3290 | void Server::journal_allocated_inos(MDRequestRef& mdr, EMetaBlob *blob) | |
3291 | { | |
3292 | dout(20) << "journal_allocated_inos sessionmapv " << mds->sessionmap.get_projected() | |
3293 | << " inotablev " << mds->inotable->get_projected_version() | |
3294 | << dendl; | |
3295 | blob->set_ino_alloc(mdr->alloc_ino, | |
3296 | mdr->used_prealloc_ino, | |
3297 | mdr->prealloc_inos, | |
3298 | mdr->client_request->get_source(), | |
3299 | mds->sessionmap.get_projected(), | |
3300 | mds->inotable->get_projected_version()); | |
3301 | } | |
3302 | ||
3303 | void Server::apply_allocated_inos(MDRequestRef& mdr, Session *session) | |
3304 | { | |
3305 | dout(10) << "apply_allocated_inos " << mdr->alloc_ino | |
3306 | << " / " << mdr->prealloc_inos | |
3307 | << " / " << mdr->used_prealloc_ino << dendl; | |
3308 | ||
3309 | if (mdr->alloc_ino) { | |
3310 | mds->inotable->apply_alloc_id(mdr->alloc_ino); | |
3311 | } | |
3312 | if (mdr->prealloc_inos.size()) { | |
11fdf7f2 | 3313 | ceph_assert(session); |
7c673cae FG |
3314 | session->pending_prealloc_inos.subtract(mdr->prealloc_inos); |
3315 | session->info.prealloc_inos.insert(mdr->prealloc_inos); | |
81eedcae | 3316 | mds->sessionmap.mark_dirty(session, !mdr->used_prealloc_ino); |
7c673cae FG |
3317 | mds->inotable->apply_alloc_ids(mdr->prealloc_inos); |
3318 | } | |
3319 | if (mdr->used_prealloc_ino) { | |
11fdf7f2 | 3320 | ceph_assert(session); |
7c673cae FG |
3321 | session->info.used_inos.erase(mdr->used_prealloc_ino); |
3322 | mds->sessionmap.mark_dirty(session); | |
3323 | } | |
3324 | } | |
3325 | ||
3326 | class C_MDS_TryFindInode : public ServerContext { | |
3327 | MDRequestRef mdr; | |
3328 | public: | |
3329 | C_MDS_TryFindInode(Server *s, MDRequestRef& r) : ServerContext(s), mdr(r) {} | |
3330 | void finish(int r) override { | |
3331 | if (r == -ESTALE) // :( find_ino_peers failed | |
3332 | server->respond_to_request(mdr, r); | |
3333 | else | |
3334 | server->dispatch_client_request(mdr); | |
3335 | } | |
3336 | }; | |
3337 | ||
11fdf7f2 TL |
3338 | class CF_MDS_MDRContextFactory : public MDSContextFactory { |
3339 | public: | |
9f95a23c TL |
3340 | CF_MDS_MDRContextFactory(MDCache *cache, MDRequestRef &mdr, bool dl) : |
3341 | mdcache(cache), mdr(mdr), drop_locks(dl) {} | |
11fdf7f2 | 3342 | MDSContext *build() { |
9f95a23c TL |
3343 | if (drop_locks) { |
3344 | mdcache->mds->locker->drop_locks(mdr.get(), nullptr); | |
3345 | mdr->drop_local_auth_pins(); | |
3346 | } | |
3347 | return new C_MDS_RetryRequest(mdcache, mdr); | |
11fdf7f2 TL |
3348 | } |
3349 | private: | |
9f95a23c | 3350 | MDCache *mdcache; |
11fdf7f2 | 3351 | MDRequestRef mdr; |
9f95a23c | 3352 | bool drop_locks; |
11fdf7f2 TL |
3353 | }; |
3354 | ||
7c673cae FG |
3355 | /* If this returns null, the request has been handled |
3356 | * as appropriate: forwarded on, or the client's been replied to */ | |
9f95a23c | 3357 | CInode* Server::rdlock_path_pin_ref(MDRequestRef& mdr, |
7c673cae | 3358 | bool want_auth, |
9f95a23c | 3359 | bool no_want_auth) |
7c673cae | 3360 | { |
9f95a23c | 3361 | const filepath& refpath = mdr->get_filepath(); |
7c673cae FG |
3362 | dout(10) << "rdlock_path_pin_ref " << *mdr << " " << refpath << dendl; |
3363 | ||
9f95a23c TL |
3364 | if (mdr->locking_state & MutationImpl::PATH_LOCKED) |
3365 | return mdr->in[0]; | |
7c673cae FG |
3366 | |
3367 | // traverse | |
9f95a23c TL |
3368 | CF_MDS_MDRContextFactory cf(mdcache, mdr, true); |
3369 | int flags = 0; | |
3370 | if (refpath.is_last_snap()) { | |
3371 | if (!no_want_auth) | |
3372 | want_auth = true; | |
3373 | } else { | |
f91f0fd5 TL |
3374 | if (!no_want_auth && forward_all_requests_to_auth) |
3375 | want_auth = true; | |
9f95a23c TL |
3376 | flags |= MDS_TRAVERSE_RDLOCK_PATH | MDS_TRAVERSE_RDLOCK_SNAP; |
3377 | } | |
3378 | if (want_auth) | |
3379 | flags |= MDS_TRAVERSE_WANT_AUTH; | |
3380 | int r = mdcache->path_traverse(mdr, cf, refpath, flags, &mdr->dn[0], &mdr->in[0]); | |
7c673cae | 3381 | if (r > 0) |
9f95a23c | 3382 | return nullptr; // delayed |
7c673cae | 3383 | if (r < 0) { // error |
9f95a23c TL |
3384 | if (r == -ENOENT && !mdr->dn[0].empty()) { |
3385 | if (mdr->client_request && | |
3386 | mdr->client_request->get_dentry_wanted()) | |
3387 | mdr->tracedn = mdr->dn[0].back(); | |
7c673cae FG |
3388 | respond_to_request(mdr, r); |
3389 | } else if (r == -ESTALE) { | |
3390 | dout(10) << "FAIL on ESTALE but attempting recovery" << dendl; | |
11fdf7f2 | 3391 | MDSContext *c = new C_MDS_TryFindInode(this, mdr); |
7c673cae FG |
3392 | mdcache->find_ino_peers(refpath.get_ino(), c); |
3393 | } else { | |
3394 | dout(10) << "FAIL on error " << r << dendl; | |
3395 | respond_to_request(mdr, r); | |
3396 | } | |
9f95a23c | 3397 | return nullptr; |
7c673cae | 3398 | } |
9f95a23c | 3399 | CInode *ref = mdr->in[0]; |
7c673cae FG |
3400 | dout(10) << "ref is " << *ref << dendl; |
3401 | ||
7c673cae | 3402 | if (want_auth) { |
7c673cae FG |
3403 | // auth_pin? |
3404 | // do NOT proceed if freezing, as cap release may defer in that case, and | |
3405 | // we could deadlock when we try to lock @ref. | |
3406 | // if we're already auth_pinned, continue; the release has already been processed. | |
3407 | if (ref->is_frozen() || ref->is_frozen_auth_pin() || | |
3408 | (ref->is_freezing() && !mdr->is_auth_pinned(ref))) { | |
3409 | dout(7) << "waiting for !frozen/authpinnable on " << *ref << dendl; | |
9f95a23c TL |
3410 | ref->add_waiter(CInode::WAIT_UNFREEZE, cf.build()); |
3411 | if (mdr->is_any_remote_auth_pin()) | |
224ce89b | 3412 | mds->locker->notify_freeze_waiter(ref); |
7c673cae FG |
3413 | return 0; |
3414 | } | |
7c673cae FG |
3415 | mdr->auth_pin(ref); |
3416 | } | |
3417 | ||
7c673cae FG |
3418 | // set and pin ref |
3419 | mdr->pin(ref); | |
3420 | return ref; | |
3421 | } | |
3422 | ||
3423 | ||
3424 | /** rdlock_path_xlock_dentry | |
3425 | * traverse path to the directory that could/would contain dentry. | |
3426 | * make sure i am auth for that dentry, forward as necessary. | |
3427 | * create null dentry in place (or use existing if okexist). | |
3428 | * get rdlocks on traversed dentries, xlock on new dentry. | |
3429 | */ | |
9f95a23c TL |
3430 | CDentry* Server::rdlock_path_xlock_dentry(MDRequestRef& mdr, |
3431 | bool create, bool okexist, bool want_layout) | |
7c673cae | 3432 | { |
9f95a23c | 3433 | const filepath& refpath = mdr->get_filepath(); |
7c673cae FG |
3434 | dout(10) << "rdlock_path_xlock_dentry " << *mdr << " " << refpath << dendl; |
3435 | ||
9f95a23c TL |
3436 | if (mdr->locking_state & MutationImpl::PATH_LOCKED) |
3437 | return mdr->dn[0].back(); | |
3438 | ||
3439 | // figure parent dir vs dname | |
3440 | if (refpath.depth() == 0) { | |
3441 | dout(7) << "invalid path (zero length)" << dendl; | |
3442 | respond_to_request(mdr, -EINVAL); | |
3443 | return nullptr; | |
3444 | } | |
3445 | ||
3446 | if (refpath.is_last_snap()) { | |
3447 | respond_to_request(mdr, -EROFS); | |
3448 | return nullptr; | |
3449 | } | |
7c673cae | 3450 | |
9f95a23c TL |
3451 | if (refpath.is_last_dot_or_dotdot()) { |
3452 | dout(7) << "invalid path (last dot or dot_dot)" << dendl; | |
3453 | if (create) | |
3454 | respond_to_request(mdr, -EEXIST); | |
3455 | else | |
3456 | respond_to_request(mdr, -ENOTEMPTY); | |
3457 | return nullptr; | |
3458 | } | |
7c673cae | 3459 | |
9f95a23c TL |
3460 | // traverse to parent dir |
3461 | CF_MDS_MDRContextFactory cf(mdcache, mdr, true); | |
3462 | int flags = MDS_TRAVERSE_RDLOCK_SNAP | MDS_TRAVERSE_RDLOCK_PATH | | |
3463 | MDS_TRAVERSE_WANT_DENTRY | MDS_TRAVERSE_XLOCK_DENTRY | | |
3464 | MDS_TRAVERSE_WANT_AUTH; | |
3465 | if (refpath.depth() == 1 && !mdr->lock_cache_disabled) | |
3466 | flags |= MDS_TRAVERSE_CHECK_LOCKCACHE; | |
3467 | if (create) | |
3468 | flags |= MDS_TRAVERSE_RDLOCK_AUTHLOCK; | |
3469 | if (want_layout) | |
3470 | flags |= MDS_TRAVERSE_WANT_DIRLAYOUT; | |
3471 | int r = mdcache->path_traverse(mdr, cf, refpath, flags, &mdr->dn[0]); | |
3472 | if (r > 0) | |
3473 | return nullptr; // delayed | |
3474 | if (r < 0) { | |
3475 | if (r == -ESTALE) { | |
3476 | dout(10) << "FAIL on ESTALE but attempting recovery" << dendl; | |
3477 | mdcache->find_ino_peers(refpath.get_ino(), new C_MDS_TryFindInode(this, mdr)); | |
3478 | return nullptr; | |
3479 | } | |
3480 | respond_to_request(mdr, r); | |
3481 | return nullptr; | |
3482 | } | |
7c673cae | 3483 | |
9f95a23c TL |
3484 | CDentry *dn = mdr->dn[0].back(); |
3485 | CDir *dir = dn->get_dir(); | |
7c673cae | 3486 | CInode *diri = dir->get_inode(); |
9f95a23c | 3487 | |
7c673cae FG |
3488 | if (!mdr->reqid.name.is_mds()) { |
3489 | if (diri->is_system() && !diri->is_root()) { | |
3490 | respond_to_request(mdr, -EROFS); | |
9f95a23c | 3491 | return nullptr; |
7c673cae FG |
3492 | } |
3493 | } | |
9f95a23c | 3494 | |
7c673cae FG |
3495 | if (!diri->is_base() && diri->get_projected_parent_dir()->inode->is_stray()) { |
3496 | respond_to_request(mdr, -ENOENT); | |
9f95a23c | 3497 | return nullptr; |
7c673cae FG |
3498 | } |
3499 | ||
9f95a23c TL |
3500 | CDentry::linkage_t *dnl = dn->get_projected_linkage(); |
3501 | if (dnl->is_null()) { | |
3502 | if (!create && okexist) { | |
3503 | respond_to_request(mdr, -ENOENT); | |
3504 | return nullptr; | |
7c673cae FG |
3505 | } |
3506 | ||
9f95a23c TL |
3507 | snapid_t next_snap = mdcache->get_global_snaprealm()->get_newest_seq() + 1; |
3508 | dn->first = std::max(dn->first, next_snap); | |
7c673cae | 3509 | } else { |
9f95a23c TL |
3510 | if (!okexist) { |
3511 | respond_to_request(mdr, -EEXIST); | |
3512 | return nullptr; | |
3513 | } | |
3514 | mdr->in[0] = dnl->get_inode(); | |
7c673cae FG |
3515 | } |
3516 | ||
7c673cae FG |
3517 | return dn; |
3518 | } | |
3519 | ||
9f95a23c TL |
3520 | /** rdlock_two_paths_xlock_destdn |
3521 | * traverse two paths and lock the two paths in proper order. | |
3522 | * The order of taking locks is: | |
3523 | * 1. Lock directory inodes or dentries according to which trees they | |
3524 | * are under. Lock objects under fs root before objects under mdsdir. | |
3525 | * 2. Lock directory inodes or dentries according to their depth, in | |
3526 | * ascending order. | |
3527 | * 3. Lock directory inodes or dentries according to inode numbers or | |
3528 | * dentries' parent inode numbers, in ascending order. | |
3529 | * 4. Lock dentries in the same directory in order of their keys. | |
3530 | * 5. Lock non-directory inodes according to inode numbers, in ascending | |
3531 | * order. | |
3532 | */ | |
3533 | std::pair<CDentry*, CDentry*> | |
3534 | Server::rdlock_two_paths_xlock_destdn(MDRequestRef& mdr, bool xlock_srcdn) | |
3535 | { | |
7c673cae | 3536 | |
9f95a23c TL |
3537 | const filepath& refpath = mdr->get_filepath(); |
3538 | const filepath& refpath2 = mdr->get_filepath2(); | |
7c673cae | 3539 | |
9f95a23c | 3540 | dout(10) << "rdlock_two_paths_xlock_destdn " << *mdr << " " << refpath << " " << refpath2 << dendl; |
7c673cae | 3541 | |
9f95a23c TL |
3542 | if (mdr->locking_state & MutationImpl::PATH_LOCKED) |
3543 | return std::make_pair(mdr->dn[0].back(), mdr->dn[1].back()); | |
7c673cae | 3544 | |
9f95a23c TL |
3545 | if (refpath.depth() != 1 || refpath2.depth() != 1) { |
3546 | respond_to_request(mdr, -EINVAL); | |
3547 | return std::pair<CDentry*, CDentry*>(nullptr, nullptr); | |
3548 | } | |
3549 | ||
3550 | if (refpath.is_last_snap() || refpath2.is_last_snap()) { | |
3551 | respond_to_request(mdr, -EROFS); | |
3552 | return std::make_pair(nullptr, nullptr); | |
3553 | } | |
3554 | ||
3555 | // traverse to parent dir | |
3556 | CF_MDS_MDRContextFactory cf(mdcache, mdr, true); | |
3557 | int flags = MDS_TRAVERSE_RDLOCK_SNAP | MDS_TRAVERSE_WANT_DENTRY | MDS_TRAVERSE_WANT_AUTH; | |
3558 | int r = mdcache->path_traverse(mdr, cf, refpath, flags, &mdr->dn[0]); | |
3559 | if (r != 0) { | |
3560 | if (r == -ESTALE) { | |
3561 | dout(10) << "ESTALE on path, attempting recovery" << dendl; | |
3562 | mdcache->find_ino_peers(refpath.get_ino(), new C_MDS_TryFindInode(this, mdr)); | |
3563 | } else if (r < 0) { | |
3564 | respond_to_request(mdr, r); | |
3565 | } | |
3566 | return std::make_pair(nullptr, nullptr); | |
3567 | } | |
3568 | ||
3569 | flags = MDS_TRAVERSE_RDLOCK_SNAP2 | MDS_TRAVERSE_WANT_DENTRY | MDS_TRAVERSE_DISCOVER; | |
3570 | r = mdcache->path_traverse(mdr, cf, refpath2, flags, &mdr->dn[1]); | |
3571 | if (r != 0) { | |
3572 | if (r == -ESTALE) { | |
3573 | dout(10) << "ESTALE on path2, attempting recovery" << dendl; | |
3574 | mdcache->find_ino_peers(refpath2.get_ino(), new C_MDS_TryFindInode(this, mdr)); | |
3575 | } else if (r < 0) { | |
3576 | respond_to_request(mdr, r); | |
3577 | } | |
3578 | return std::make_pair(nullptr, nullptr); | |
3579 | } | |
3580 | ||
3581 | CDentry *srcdn = mdr->dn[1].back(); | |
3582 | CDir *srcdir = srcdn->get_dir(); | |
3583 | CDentry *destdn = mdr->dn[0].back(); | |
3584 | CDir *destdir = destdn->get_dir(); | |
3585 | ||
3586 | if (!mdr->reqid.name.is_mds()) { | |
3587 | if ((srcdir->get_inode()->is_system() && !srcdir->get_inode()->is_root()) || | |
3588 | (destdir->get_inode()->is_system() && !destdir->get_inode()->is_root())) { | |
3589 | respond_to_request(mdr, -EROFS); | |
3590 | return std::make_pair(nullptr, nullptr); | |
3591 | } | |
3592 | } | |
3593 | ||
3594 | if (!destdir->get_inode()->is_base() && | |
3595 | destdir->get_inode()->get_projected_parent_dir()->inode->is_stray()) { | |
3596 | respond_to_request(mdr, -ENOENT); | |
3597 | return std::make_pair(nullptr, nullptr); | |
3598 | } | |
3599 | ||
3600 | MutationImpl::LockOpVec lov; | |
3601 | if (srcdir->get_inode() == destdir->get_inode()) { | |
3602 | lov.add_wrlock(&destdir->inode->filelock); | |
3603 | lov.add_wrlock(&destdir->inode->nestlock); | |
3604 | if (xlock_srcdn && srcdir != destdir) { | |
3605 | mds_rank_t srcdir_auth = srcdir->authority().first; | |
3606 | if (srcdir_auth != mds->get_nodeid()) { | |
3607 | lov.add_remote_wrlock(&srcdir->inode->filelock, srcdir_auth); | |
3608 | lov.add_remote_wrlock(&srcdir->inode->nestlock, srcdir_auth); | |
3609 | } | |
3610 | } | |
3611 | ||
3612 | if (srcdn->get_name() > destdn->get_name()) | |
3613 | lov.add_xlock(&destdn->lock); | |
3614 | ||
3615 | if (xlock_srcdn) | |
3616 | lov.add_xlock(&srcdn->lock); | |
3617 | else | |
3618 | lov.add_rdlock(&srcdn->lock); | |
3619 | ||
3620 | if (srcdn->get_name() < destdn->get_name()) | |
3621 | lov.add_xlock(&destdn->lock); | |
3622 | } else { | |
3623 | int cmp = mdr->compare_paths(); | |
3624 | bool lock_destdir_first = | |
3625 | (cmp < 0 || (cmp == 0 && destdir->ino() < srcdir->ino())); | |
3626 | ||
3627 | if (lock_destdir_first) { | |
3628 | lov.add_wrlock(&destdir->inode->filelock); | |
3629 | lov.add_wrlock(&destdir->inode->nestlock); | |
3630 | lov.add_xlock(&destdn->lock); | |
3631 | } | |
3632 | ||
3633 | if (xlock_srcdn) { | |
3634 | mds_rank_t srcdir_auth = srcdir->authority().first; | |
3635 | if (srcdir_auth == mds->get_nodeid()) { | |
3636 | lov.add_wrlock(&srcdir->inode->filelock); | |
3637 | lov.add_wrlock(&srcdir->inode->nestlock); | |
3638 | } else { | |
3639 | lov.add_remote_wrlock(&srcdir->inode->filelock, srcdir_auth); | |
3640 | lov.add_remote_wrlock(&srcdir->inode->nestlock, srcdir_auth); | |
3641 | } | |
3642 | lov.add_xlock(&srcdn->lock); | |
3643 | } else { | |
3644 | lov.add_rdlock(&srcdn->lock); | |
3645 | } | |
3646 | ||
3647 | if (!lock_destdir_first) { | |
3648 | lov.add_wrlock(&destdir->inode->filelock); | |
3649 | lov.add_wrlock(&destdir->inode->nestlock); | |
3650 | lov.add_xlock(&destdn->lock); | |
3651 | } | |
3652 | } | |
3653 | ||
3654 | CInode *auth_pin_freeze = nullptr; | |
3655 | // XXX any better way to do this? | |
3656 | if (xlock_srcdn && !srcdn->is_auth()) { | |
3657 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); | |
3658 | auth_pin_freeze = srcdnl->is_primary() ? srcdnl->get_inode() : nullptr; | |
3659 | } | |
3660 | if (!mds->locker->acquire_locks(mdr, lov, auth_pin_freeze)) | |
3661 | return std::make_pair(nullptr, nullptr); | |
3662 | ||
3663 | if (srcdn->get_projected_linkage()->is_null()) { | |
3664 | respond_to_request(mdr, -ENOENT); | |
3665 | return std::make_pair(nullptr, nullptr); | |
3666 | } | |
3667 | ||
3668 | if (destdn->get_projected_linkage()->is_null()) { | |
3669 | snapid_t next_snap = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
3670 | destdn->first = std::max(destdn->first, next_snap); | |
3671 | } | |
3672 | ||
3673 | mdr->locking_state |= MutationImpl::PATH_LOCKED; | |
3674 | ||
3675 | return std::make_pair(destdn, srcdn); | |
3676 | } | |
3677 | ||
3678 | /** | |
3679 | * try_open_auth_dirfrag -- open dirfrag, or forward to dirfrag auth | |
3680 | * | |
3681 | * @param diri base inode | |
3682 | * @param fg the exact frag we want | |
7c673cae FG |
3683 | * @param mdr request |
3684 | * @returns the pointer, or NULL if it had to be delayed (but mdr is taken care of) | |
3685 | */ | |
3686 | CDir* Server::try_open_auth_dirfrag(CInode *diri, frag_t fg, MDRequestRef& mdr) | |
3687 | { | |
3688 | CDir *dir = diri->get_dirfrag(fg); | |
3689 | ||
9f95a23c TL |
3690 | if (dir) { |
3691 | // am i auth for the dirfrag? | |
3692 | if (!dir->is_auth()) { | |
3693 | mds_rank_t auth = dir->authority().first; | |
3694 | dout(7) << "try_open_auth_dirfrag: not auth for " << *dir | |
3695 | << ", fw to mds." << auth << dendl; | |
3696 | mdcache->request_forward(mdr, auth); | |
3697 | return nullptr; | |
3698 | } | |
3699 | } else { | |
3700 | // not open and inode not mine? | |
3701 | if (!diri->is_auth()) { | |
3702 | mds_rank_t inauth = diri->authority().first; | |
3703 | dout(7) << "try_open_auth_dirfrag: not open, not inode auth, fw to mds." << inauth << dendl; | |
3704 | mdcache->request_forward(mdr, inauth); | |
3705 | return nullptr; | |
3706 | } | |
7c673cae | 3707 | |
9f95a23c TL |
3708 | // not open and inode frozen? |
3709 | if (diri->is_frozen()) { | |
3710 | dout(10) << "try_open_auth_dirfrag: dir inode is frozen, waiting " << *diri << dendl; | |
3711 | ceph_assert(diri->get_parent_dir()); | |
3712 | diri->add_waiter(CInode::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
3713 | return nullptr; | |
3714 | } | |
7c673cae | 3715 | |
9f95a23c | 3716 | // invent? |
7c673cae | 3717 | dir = diri->get_or_open_dirfrag(mdcache, fg); |
7c673cae FG |
3718 | } |
3719 | ||
3720 | return dir; | |
3721 | } | |
3722 | ||
3723 | ||
3724 | // =============================================================================== | |
3725 | // STAT | |
3726 | ||
3727 | void Server::handle_client_getattr(MDRequestRef& mdr, bool is_lookup) | |
3728 | { | |
9f95a23c | 3729 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
3730 | |
3731 | if (req->get_filepath().depth() == 0 && is_lookup) { | |
3732 | // refpath can't be empty for lookup but it can for | |
3733 | // getattr (we do getattr with empty refpath for mount of '/') | |
3734 | respond_to_request(mdr, -EINVAL); | |
3735 | return; | |
3736 | } | |
3737 | ||
28e407b8 AA |
3738 | bool want_auth = false; |
3739 | int mask = req->head.args.getattr.mask; | |
3740 | if (mask & CEPH_STAT_RSTAT) | |
3741 | want_auth = true; // set want_auth for CEPH_STAT_RSTAT mask | |
3742 | ||
f91f0fd5 TL |
3743 | if (!mdr->is_batch_head() && mdr->can_batch()) { |
3744 | CF_MDS_MDRContextFactory cf(mdcache, mdr, false); | |
3745 | int r = mdcache->path_traverse(mdr, cf, mdr->get_filepath(), | |
3746 | (want_auth ? MDS_TRAVERSE_WANT_AUTH : 0), | |
3747 | &mdr->dn[0], &mdr->in[0]); | |
3748 | if (r > 0) | |
3749 | return; // delayed | |
9f95a23c | 3750 | |
f91f0fd5 TL |
3751 | if (r < 0) { |
3752 | // fall-thru. let rdlock_path_pin_ref() check again. | |
3753 | } else if (is_lookup) { | |
3754 | CDentry* dn = mdr->dn[0].back(); | |
3755 | mdr->pin(dn); | |
3756 | auto em = dn->batch_ops.emplace(std::piecewise_construct, std::forward_as_tuple(mask), std::forward_as_tuple()); | |
9f95a23c | 3757 | if (em.second) { |
f91f0fd5 | 3758 | em.first->second = std::make_unique<Batch_Getattr_Lookup>(this, mdr); |
9f95a23c | 3759 | } else { |
f91f0fd5 | 3760 | dout(20) << __func__ << ": LOOKUP op, wait for previous same getattr ops to respond. " << *mdr << dendl; |
9f95a23c TL |
3761 | em.first->second->add_request(mdr); |
3762 | return; | |
3763 | } | |
3764 | } else { | |
f91f0fd5 TL |
3765 | CInode *in = mdr->in[0]; |
3766 | mdr->pin(in); | |
3767 | auto em = in->batch_ops.emplace(std::piecewise_construct, std::forward_as_tuple(mask), std::forward_as_tuple()); | |
9f95a23c | 3768 | if (em.second) { |
f91f0fd5 | 3769 | em.first->second = std::make_unique<Batch_Getattr_Lookup>(this, mdr); |
9f95a23c | 3770 | } else { |
f91f0fd5 | 3771 | dout(20) << __func__ << ": GETATTR op, wait for previous same getattr ops to respond. " << *mdr << dendl; |
9f95a23c TL |
3772 | em.first->second->add_request(mdr); |
3773 | return; | |
3774 | } | |
3775 | } | |
9f95a23c | 3776 | } |
7c673cae | 3777 | |
f91f0fd5 TL |
3778 | CInode *ref = rdlock_path_pin_ref(mdr, want_auth, false); |
3779 | if (!ref) | |
3780 | return; | |
3781 | ||
3782 | mdr->getattr_caps = mask; | |
3783 | ||
7c673cae FG |
3784 | /* |
3785 | * if client currently holds the EXCL cap on a field, do not rdlock | |
3786 | * it; client's stat() will result in valid info if _either_ EXCL | |
3787 | * cap is held or MDS rdlocks and reads the value here. | |
3788 | * | |
3789 | * handling this case here is easier than weakening rdlock | |
3790 | * semantics... that would cause problems elsewhere. | |
3791 | */ | |
3792 | client_t client = mdr->get_client(); | |
3793 | int issued = 0; | |
3794 | Capability *cap = ref->get_client_cap(client); | |
3795 | if (cap && (mdr->snapid == CEPH_NOSNAP || | |
3796 | mdr->snapid <= cap->client_follows)) | |
3797 | issued = cap->issued(); | |
3798 | ||
9f95a23c TL |
3799 | // FIXME |
3800 | MutationImpl::LockOpVec lov; | |
94b18763 | 3801 | if ((mask & CEPH_CAP_LINK_SHARED) && !(issued & CEPH_CAP_LINK_EXCL)) |
11fdf7f2 | 3802 | lov.add_rdlock(&ref->linklock); |
94b18763 | 3803 | if ((mask & CEPH_CAP_AUTH_SHARED) && !(issued & CEPH_CAP_AUTH_EXCL)) |
11fdf7f2 | 3804 | lov.add_rdlock(&ref->authlock); |
94b18763 | 3805 | if ((mask & CEPH_CAP_XATTR_SHARED) && !(issued & CEPH_CAP_XATTR_EXCL)) |
11fdf7f2 | 3806 | lov.add_rdlock(&ref->xattrlock); |
94b18763 FG |
3807 | if ((mask & CEPH_CAP_FILE_SHARED) && !(issued & CEPH_CAP_FILE_EXCL)) { |
3808 | // Don't wait on unstable filelock if client is allowed to read file size. | |
3809 | // This can reduce the response time of getattr in the case that multiple | |
3810 | // clients do stat(2) and there are writers. | |
3811 | // The downside of this optimization is that mds may not issue Fs caps along | |
3812 | // with getattr reply. Client may need to send more getattr requests. | |
11fdf7f2 TL |
3813 | if (mdr->is_rdlocked(&ref->filelock)) { |
3814 | lov.add_rdlock(&ref->filelock); | |
94b18763 FG |
3815 | } else if (ref->filelock.is_stable() || |
3816 | ref->filelock.get_num_wrlocks() > 0 || | |
3817 | !ref->filelock.can_read(mdr->get_client())) { | |
11fdf7f2 | 3818 | lov.add_rdlock(&ref->filelock); |
9f95a23c | 3819 | mdr->locking_state &= ~MutationImpl::ALL_LOCKED; |
94b18763 FG |
3820 | } |
3821 | } | |
7c673cae | 3822 | |
11fdf7f2 | 3823 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
3824 | return; |
3825 | ||
3826 | if (!check_access(mdr, ref, MAY_READ)) | |
3827 | return; | |
3828 | ||
28e407b8 AA |
3829 | utime_t now = ceph_clock_now(); |
3830 | mdr->set_mds_stamp(now); | |
3831 | ||
7c673cae FG |
3832 | // note which caps are requested, so we return at least a snapshot |
3833 | // value for them. (currently this matters for xattrs and inline data) | |
3834 | mdr->getattr_caps = mask; | |
3835 | ||
11fdf7f2 | 3836 | mds->balancer->hit_inode(ref, META_POP_IRD, req->get_source().num()); |
7c673cae FG |
3837 | |
3838 | // reply | |
3839 | dout(10) << "reply to stat on " << *req << dendl; | |
3840 | mdr->tracei = ref; | |
3841 | if (is_lookup) | |
3842 | mdr->tracedn = mdr->dn[0].back(); | |
3843 | respond_to_request(mdr, 0); | |
3844 | } | |
3845 | ||
3846 | struct C_MDS_LookupIno2 : public ServerContext { | |
3847 | MDRequestRef mdr; | |
3848 | C_MDS_LookupIno2(Server *s, MDRequestRef& r) : ServerContext(s), mdr(r) {} | |
3849 | void finish(int r) override { | |
3850 | server->_lookup_ino_2(mdr, r); | |
3851 | } | |
3852 | }; | |
3853 | ||
7c673cae FG |
3854 | /* |
3855 | * filepath: ino | |
3856 | */ | |
3857 | void Server::handle_client_lookup_ino(MDRequestRef& mdr, | |
3858 | bool want_parent, bool want_dentry) | |
3859 | { | |
9f95a23c | 3860 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 TL |
3861 | |
3862 | if ((uint64_t)req->head.args.lookupino.snapid > 0) | |
3863 | return _lookup_snap_ino(mdr); | |
7c673cae FG |
3864 | |
3865 | inodeno_t ino = req->get_filepath().get_ino(); | |
3866 | CInode *in = mdcache->get_inode(ino); | |
3867 | if (in && in->state_test(CInode::STATE_PURGING)) { | |
3868 | respond_to_request(mdr, -ESTALE); | |
3869 | return; | |
3870 | } | |
3871 | if (!in) { | |
3872 | mdcache->open_ino(ino, (int64_t)-1, new C_MDS_LookupIno2(this, mdr), false); | |
3873 | return; | |
3874 | } | |
3875 | ||
11fdf7f2 | 3876 | if (mdr && in->snaprealm && !in->snaprealm->have_past_parents_open() && |
7c673cae FG |
3877 | !in->snaprealm->open_parents(new C_MDS_RetryRequest(mdcache, mdr))) { |
3878 | return; | |
3879 | } | |
3880 | ||
3881 | // check for nothing (not read or write); this still applies the | |
3882 | // path check. | |
3883 | if (!check_access(mdr, in, 0)) | |
3884 | return; | |
3885 | ||
3886 | CDentry *dn = in->get_projected_parent_dn(); | |
3887 | CInode *diri = dn ? dn->get_dir()->inode : NULL; | |
3888 | ||
11fdf7f2 | 3889 | MutationImpl::LockOpVec lov; |
7c673cae FG |
3890 | if (dn && (want_parent || want_dentry)) { |
3891 | mdr->pin(dn); | |
11fdf7f2 | 3892 | lov.add_rdlock(&dn->lock); |
7c673cae FG |
3893 | } |
3894 | ||
11fdf7f2 | 3895 | unsigned mask = req->head.args.lookupino.mask; |
7c673cae FG |
3896 | if (mask) { |
3897 | Capability *cap = in->get_client_cap(mdr->get_client()); | |
3898 | int issued = 0; | |
3899 | if (cap && (mdr->snapid == CEPH_NOSNAP || mdr->snapid <= cap->client_follows)) | |
3900 | issued = cap->issued(); | |
9f95a23c | 3901 | // FIXME |
7c673cae FG |
3902 | // permission bits, ACL/security xattrs |
3903 | if ((mask & CEPH_CAP_AUTH_SHARED) && (issued & CEPH_CAP_AUTH_EXCL) == 0) | |
11fdf7f2 | 3904 | lov.add_rdlock(&in->authlock); |
7c673cae | 3905 | if ((mask & CEPH_CAP_XATTR_SHARED) && (issued & CEPH_CAP_XATTR_EXCL) == 0) |
11fdf7f2 | 3906 | lov.add_rdlock(&in->xattrlock); |
7c673cae FG |
3907 | |
3908 | mdr->getattr_caps = mask; | |
3909 | } | |
3910 | ||
11fdf7f2 TL |
3911 | if (!lov.empty()) { |
3912 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
3913 | return; |
3914 | ||
d2e6a577 FG |
3915 | if (diri != NULL) { |
3916 | // need read access to directory inode | |
3917 | if (!check_access(mdr, diri, MAY_READ)) | |
3918 | return; | |
3919 | } | |
7c673cae FG |
3920 | } |
3921 | ||
3922 | if (want_parent) { | |
3923 | if (in->is_base()) { | |
3924 | respond_to_request(mdr, -EINVAL); | |
3925 | return; | |
3926 | } | |
3927 | if (!diri || diri->is_stray()) { | |
3928 | respond_to_request(mdr, -ESTALE); | |
3929 | return; | |
3930 | } | |
3931 | dout(10) << "reply to lookup_parent " << *in << dendl; | |
3932 | mdr->tracei = diri; | |
3933 | respond_to_request(mdr, 0); | |
3934 | } else { | |
3935 | if (want_dentry) { | |
3936 | inodeno_t dirino = req->get_filepath2().get_ino(); | |
3937 | if (!diri || (dirino != inodeno_t() && diri->ino() != dirino)) { | |
3938 | respond_to_request(mdr, -ENOENT); | |
3939 | return; | |
3940 | } | |
3941 | dout(10) << "reply to lookup_name " << *in << dendl; | |
3942 | } else | |
3943 | dout(10) << "reply to lookup_ino " << *in << dendl; | |
3944 | ||
3945 | mdr->tracei = in; | |
3946 | if (want_dentry) | |
3947 | mdr->tracedn = dn; | |
3948 | respond_to_request(mdr, 0); | |
3949 | } | |
3950 | } | |
3951 | ||
11fdf7f2 TL |
3952 | void Server::_lookup_snap_ino(MDRequestRef& mdr) |
3953 | { | |
9f95a23c | 3954 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 TL |
3955 | |
3956 | vinodeno_t vino; | |
3957 | vino.ino = req->get_filepath().get_ino(); | |
3958 | vino.snapid = (__u64)req->head.args.lookupino.snapid; | |
3959 | inodeno_t parent_ino = (__u64)req->head.args.lookupino.parent; | |
3960 | __u32 hash = req->head.args.lookupino.hash; | |
3961 | ||
3962 | dout(7) << "lookup_snap_ino " << vino << " parent " << parent_ino << " hash " << hash << dendl; | |
3963 | ||
3964 | CInode *in = mdcache->lookup_snap_inode(vino); | |
3965 | if (!in) { | |
3966 | in = mdcache->get_inode(vino.ino); | |
3967 | if (in) { | |
3968 | if (in->state_test(CInode::STATE_PURGING) || | |
3969 | !in->has_snap_data(vino.snapid)) { | |
3970 | if (in->is_dir() || !parent_ino) { | |
3971 | respond_to_request(mdr, -ESTALE); | |
3972 | return; | |
3973 | } | |
3974 | in = NULL; | |
3975 | } | |
3976 | } | |
3977 | } | |
3978 | ||
3979 | if (in) { | |
3980 | dout(10) << "reply to lookup_snap_ino " << *in << dendl; | |
3981 | mdr->snapid = vino.snapid; | |
3982 | mdr->tracei = in; | |
3983 | respond_to_request(mdr, 0); | |
3984 | return; | |
3985 | } | |
3986 | ||
3987 | CInode *diri = NULL; | |
3988 | if (parent_ino) { | |
3989 | diri = mdcache->get_inode(parent_ino); | |
3990 | if (!diri) { | |
3991 | mdcache->open_ino(parent_ino, mds->mdsmap->get_metadata_pool(), new C_MDS_LookupIno2(this, mdr)); | |
3992 | return; | |
3993 | } | |
3994 | ||
3995 | if (!diri->is_dir()) { | |
3996 | respond_to_request(mdr, -EINVAL); | |
3997 | return; | |
3998 | } | |
3999 | ||
4000 | MutationImpl::LockOpVec lov; | |
4001 | lov.add_rdlock(&diri->dirfragtreelock); | |
4002 | if (!mds->locker->acquire_locks(mdr, lov)) | |
4003 | return; | |
4004 | ||
4005 | frag_t frag = diri->dirfragtree[hash]; | |
4006 | CDir *dir = try_open_auth_dirfrag(diri, frag, mdr); | |
4007 | if (!dir) | |
4008 | return; | |
4009 | ||
4010 | if (!dir->is_complete()) { | |
4011 | if (dir->is_frozen()) { | |
4012 | mds->locker->drop_locks(mdr.get()); | |
4013 | mdr->drop_local_auth_pins(); | |
4014 | dir->add_waiter(CDir::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
4015 | return; | |
4016 | } | |
4017 | dir->fetch(new C_MDS_RetryRequest(mdcache, mdr), true); | |
4018 | return; | |
4019 | } | |
4020 | ||
4021 | respond_to_request(mdr, -ESTALE); | |
4022 | } else { | |
4023 | mdcache->open_ino(vino.ino, mds->mdsmap->get_metadata_pool(), new C_MDS_LookupIno2(this, mdr), false); | |
4024 | } | |
4025 | } | |
4026 | ||
7c673cae FG |
4027 | void Server::_lookup_ino_2(MDRequestRef& mdr, int r) |
4028 | { | |
4029 | inodeno_t ino = mdr->client_request->get_filepath().get_ino(); | |
4030 | dout(10) << "_lookup_ino_2 " << mdr.get() << " ino " << ino << " r=" << r << dendl; | |
4031 | ||
4032 | // `r` is a rank if >=0, else an error code | |
4033 | if (r >= 0) { | |
4034 | mds_rank_t dest_rank(r); | |
4035 | if (dest_rank == mds->get_nodeid()) | |
4036 | dispatch_client_request(mdr); | |
4037 | else | |
4038 | mdcache->request_forward(mdr, dest_rank); | |
4039 | return; | |
4040 | } | |
4041 | ||
4042 | // give up | |
4043 | if (r == -ENOENT || r == -ENODATA) | |
4044 | r = -ESTALE; | |
4045 | respond_to_request(mdr, r); | |
4046 | } | |
4047 | ||
4048 | ||
4049 | /* This function takes responsibility for the passed mdr*/ | |
4050 | void Server::handle_client_open(MDRequestRef& mdr) | |
4051 | { | |
9f95a23c | 4052 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
4053 | dout(7) << "open on " << req->get_filepath() << dendl; |
4054 | ||
4055 | int flags = req->head.args.open.flags; | |
4056 | int cmode = ceph_flags_to_mode(flags); | |
4057 | if (cmode < 0) { | |
4058 | respond_to_request(mdr, -EINVAL); | |
4059 | return; | |
4060 | } | |
4061 | ||
181888fb FG |
4062 | bool need_auth = !file_mode_is_readonly(cmode) || |
4063 | (flags & (CEPH_O_TRUNC | CEPH_O_DIRECTORY)); | |
7c673cae FG |
4064 | |
4065 | if ((cmode & CEPH_FILE_MODE_WR) && mdcache->is_readonly()) { | |
4066 | dout(7) << "read-only FS" << dendl; | |
4067 | respond_to_request(mdr, -EROFS); | |
4068 | return; | |
4069 | } | |
4070 | ||
9f95a23c | 4071 | CInode *cur = rdlock_path_pin_ref(mdr, need_auth); |
7c673cae FG |
4072 | if (!cur) |
4073 | return; | |
4074 | ||
4075 | if (cur->is_frozen() || cur->state_test(CInode::STATE_EXPORTINGCAPS)) { | |
11fdf7f2 | 4076 | ceph_assert(!need_auth); |
9f95a23c TL |
4077 | mdr->locking_state &= ~(MutationImpl::PATH_LOCKED | MutationImpl::ALL_LOCKED); |
4078 | CInode *cur = rdlock_path_pin_ref(mdr, true); | |
7c673cae FG |
4079 | if (!cur) |
4080 | return; | |
4081 | } | |
4082 | ||
4083 | if (!cur->inode.is_file()) { | |
4084 | // can only open non-regular inode with mode FILE_MODE_PIN, at least for now. | |
4085 | cmode = CEPH_FILE_MODE_PIN; | |
4086 | // the inode is symlink and client wants to follow it, ignore the O_TRUNC flag. | |
4087 | if (cur->inode.is_symlink() && !(flags & CEPH_O_NOFOLLOW)) | |
4088 | flags &= ~CEPH_O_TRUNC; | |
4089 | } | |
4090 | ||
4091 | dout(10) << "open flags = " << flags | |
4092 | << ", filemode = " << cmode | |
4093 | << ", need_auth = " << need_auth | |
4094 | << dendl; | |
4095 | ||
4096 | // regular file? | |
4097 | /*if (!cur->inode.is_file() && !cur->inode.is_dir()) { | |
4098 | dout(7) << "not a file or dir " << *cur << dendl; | |
4099 | respond_to_request(mdr, -ENXIO); // FIXME what error do we want? | |
4100 | return; | |
4101 | }*/ | |
4102 | if ((flags & CEPH_O_DIRECTORY) && !cur->inode.is_dir() && !cur->inode.is_symlink()) { | |
4103 | dout(7) << "specified O_DIRECTORY on non-directory " << *cur << dendl; | |
4104 | respond_to_request(mdr, -EINVAL); | |
4105 | return; | |
4106 | } | |
4107 | ||
4108 | if ((flags & CEPH_O_TRUNC) && !cur->inode.is_file()) { | |
4109 | dout(7) << "specified O_TRUNC on !(file|symlink) " << *cur << dendl; | |
4110 | // we should return -EISDIR for directory, return -EINVAL for other non-regular | |
4111 | respond_to_request(mdr, cur->inode.is_dir() ? -EISDIR : -EINVAL); | |
4112 | return; | |
4113 | } | |
4114 | ||
4115 | if (cur->inode.inline_data.version != CEPH_INLINE_NONE && | |
11fdf7f2 | 4116 | !mdr->session->get_connection()->has_feature(CEPH_FEATURE_MDS_INLINE_DATA)) { |
7c673cae FG |
4117 | dout(7) << "old client cannot open inline data file " << *cur << dendl; |
4118 | respond_to_request(mdr, -EPERM); | |
4119 | return; | |
4120 | } | |
4121 | ||
4122 | // snapped data is read only | |
4123 | if (mdr->snapid != CEPH_NOSNAP && | |
4124 | ((cmode & CEPH_FILE_MODE_WR) || req->may_write())) { | |
4125 | dout(7) << "snap " << mdr->snapid << " is read-only " << *cur << dendl; | |
4126 | respond_to_request(mdr, -EROFS); | |
4127 | return; | |
4128 | } | |
4129 | ||
9f95a23c TL |
4130 | MutationImpl::LockOpVec lov; |
4131 | ||
7c673cae FG |
4132 | unsigned mask = req->head.args.open.mask; |
4133 | if (mask) { | |
4134 | Capability *cap = cur->get_client_cap(mdr->get_client()); | |
4135 | int issued = 0; | |
4136 | if (cap && (mdr->snapid == CEPH_NOSNAP || mdr->snapid <= cap->client_follows)) | |
4137 | issued = cap->issued(); | |
4138 | // permission bits, ACL/security xattrs | |
4139 | if ((mask & CEPH_CAP_AUTH_SHARED) && (issued & CEPH_CAP_AUTH_EXCL) == 0) | |
11fdf7f2 | 4140 | lov.add_rdlock(&cur->authlock); |
7c673cae | 4141 | if ((mask & CEPH_CAP_XATTR_SHARED) && (issued & CEPH_CAP_XATTR_EXCL) == 0) |
11fdf7f2 | 4142 | lov.add_rdlock(&cur->xattrlock); |
7c673cae FG |
4143 | |
4144 | mdr->getattr_caps = mask; | |
4145 | } | |
4146 | ||
4147 | // O_TRUNC | |
4148 | if ((flags & CEPH_O_TRUNC) && !mdr->has_completed) { | |
11fdf7f2 | 4149 | ceph_assert(cur->is_auth()); |
7c673cae | 4150 | |
11fdf7f2 TL |
4151 | lov.add_xlock(&cur->filelock); |
4152 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
4153 | return; |
4154 | ||
4155 | if (!check_access(mdr, cur, MAY_WRITE)) | |
4156 | return; | |
4157 | ||
4158 | // wait for pending truncate? | |
94b18763 | 4159 | const auto pi = cur->get_projected_inode(); |
7c673cae FG |
4160 | if (pi->is_truncating()) { |
4161 | dout(10) << " waiting for pending truncate from " << pi->truncate_from | |
4162 | << " to " << pi->truncate_size << " to complete on " << *cur << dendl; | |
4163 | mds->locker->drop_locks(mdr.get()); | |
4164 | mdr->drop_local_auth_pins(); | |
4165 | cur->add_waiter(CInode::WAIT_TRUNC, new C_MDS_RetryRequest(mdcache, mdr)); | |
4166 | return; | |
4167 | } | |
4168 | ||
4169 | do_open_truncate(mdr, cmode); | |
4170 | return; | |
4171 | } | |
4172 | ||
4173 | // sync filelock if snapped. | |
4174 | // this makes us wait for writers to flushsnaps, ensuring we get accurate metadata, | |
4175 | // and that data itself is flushed so that we can read the snapped data off disk. | |
4176 | if (mdr->snapid != CEPH_NOSNAP && !cur->is_dir()) { | |
11fdf7f2 | 4177 | lov.add_rdlock(&cur->filelock); |
7c673cae FG |
4178 | } |
4179 | ||
11fdf7f2 | 4180 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
4181 | return; |
4182 | ||
4183 | mask = MAY_READ; | |
4184 | if (cmode & CEPH_FILE_MODE_WR) | |
4185 | mask |= MAY_WRITE; | |
4186 | if (!check_access(mdr, cur, mask)) | |
4187 | return; | |
4188 | ||
28e407b8 AA |
4189 | utime_t now = ceph_clock_now(); |
4190 | mdr->set_mds_stamp(now); | |
4191 | ||
7c673cae FG |
4192 | if (cur->is_file() || cur->is_dir()) { |
4193 | if (mdr->snapid == CEPH_NOSNAP) { | |
4194 | // register new cap | |
9f95a23c | 4195 | Capability *cap = mds->locker->issue_new_caps(cur, cmode, mdr, nullptr); |
7c673cae FG |
4196 | if (cap) |
4197 | dout(12) << "open issued caps " << ccap_string(cap->pending()) | |
4198 | << " for " << req->get_source() | |
4199 | << " on " << *cur << dendl; | |
4200 | } else { | |
4201 | int caps = ceph_caps_for_mode(cmode); | |
4202 | dout(12) << "open issued IMMUTABLE SNAP caps " << ccap_string(caps) | |
4203 | << " for " << req->get_source() | |
4204 | << " snapid " << mdr->snapid | |
4205 | << " on " << *cur << dendl; | |
4206 | mdr->snap_caps = caps; | |
4207 | } | |
4208 | } | |
4209 | ||
4210 | // increase max_size? | |
4211 | if (cmode & CEPH_FILE_MODE_WR) | |
4212 | mds->locker->check_inode_max_size(cur); | |
4213 | ||
4214 | // make sure this inode gets into the journal | |
4215 | if (cur->is_auth() && cur->last == CEPH_NOSNAP && | |
11fdf7f2 | 4216 | mdcache->open_file_table.should_log_open(cur)) { |
7c673cae FG |
4217 | EOpen *le = new EOpen(mds->mdlog); |
4218 | mdlog->start_entry(le); | |
4219 | le->add_clean_inode(cur); | |
7c673cae FG |
4220 | mdlog->submit_entry(le); |
4221 | } | |
4222 | ||
4223 | // hit pop | |
4224 | if (cmode & CEPH_FILE_MODE_WR) | |
11fdf7f2 | 4225 | mds->balancer->hit_inode(cur, META_POP_IWR); |
7c673cae | 4226 | else |
11fdf7f2 | 4227 | mds->balancer->hit_inode(cur, META_POP_IRD, |
7c673cae FG |
4228 | mdr->client_request->get_source().num()); |
4229 | ||
4230 | CDentry *dn = 0; | |
4231 | if (req->get_dentry_wanted()) { | |
11fdf7f2 | 4232 | ceph_assert(mdr->dn[0].size()); |
7c673cae FG |
4233 | dn = mdr->dn[0].back(); |
4234 | } | |
4235 | ||
4236 | mdr->tracei = cur; | |
4237 | mdr->tracedn = dn; | |
4238 | respond_to_request(mdr, 0); | |
4239 | } | |
4240 | ||
4241 | class C_MDS_openc_finish : public ServerLogContext { | |
4242 | CDentry *dn; | |
4243 | CInode *newi; | |
7c673cae | 4244 | public: |
11fdf7f2 TL |
4245 | C_MDS_openc_finish(Server *s, MDRequestRef& r, CDentry *d, CInode *ni) : |
4246 | ServerLogContext(s, r), dn(d), newi(ni) {} | |
7c673cae | 4247 | void finish(int r) override { |
11fdf7f2 | 4248 | ceph_assert(r == 0); |
7c673cae FG |
4249 | |
4250 | dn->pop_projected_linkage(); | |
4251 | ||
4252 | // dirty inode, dn, dir | |
4253 | newi->inode.version--; // a bit hacky, see C_MDS_mknod_finish | |
4254 | newi->mark_dirty(newi->inode.version+1, mdr->ls); | |
28e407b8 | 4255 | newi->mark_dirty_parent(mdr->ls, true); |
7c673cae FG |
4256 | |
4257 | mdr->apply(); | |
4258 | ||
4259 | get_mds()->locker->share_inode_max_size(newi); | |
4260 | ||
4261 | MDRequestRef null_ref; | |
4262 | get_mds()->mdcache->send_dentry_link(dn, null_ref); | |
4263 | ||
11fdf7f2 | 4264 | get_mds()->balancer->hit_inode(newi, META_POP_IWR); |
7c673cae FG |
4265 | |
4266 | server->respond_to_request(mdr, 0); | |
4267 | ||
11fdf7f2 | 4268 | ceph_assert(g_conf()->mds_kill_openc_at != 1); |
7c673cae FG |
4269 | } |
4270 | }; | |
4271 | ||
4272 | /* This function takes responsibility for the passed mdr*/ | |
4273 | void Server::handle_client_openc(MDRequestRef& mdr) | |
4274 | { | |
9f95a23c | 4275 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
4276 | client_t client = mdr->get_client(); |
4277 | ||
4278 | dout(7) << "open w/ O_CREAT on " << req->get_filepath() << dendl; | |
4279 | ||
4280 | int cmode = ceph_flags_to_mode(req->head.args.open.flags); | |
4281 | if (cmode < 0) { | |
4282 | respond_to_request(mdr, -EINVAL); | |
4283 | return; | |
4284 | } | |
4285 | ||
c07f9fc5 | 4286 | bool excl = req->head.args.open.flags & CEPH_O_EXCL; |
9f95a23c TL |
4287 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true, !excl, true); |
4288 | if (!dn) | |
4289 | return; | |
c07f9fc5 | 4290 | |
9f95a23c TL |
4291 | CDentry::linkage_t *dnl = dn->get_projected_linkage(); |
4292 | if (!excl && !dnl->is_null()) { | |
4293 | // it existed. | |
4294 | mds->locker->xlock_downgrade(&dn->lock, mdr.get()); | |
4295 | ||
4296 | MutationImpl::LockOpVec lov; | |
4297 | lov.add_rdlock(&dnl->get_inode()->snaplock); | |
4298 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae | 4299 | return; |
7c673cae | 4300 | |
9f95a23c | 4301 | handle_client_open(mdr); |
7c673cae FG |
4302 | return; |
4303 | } | |
9f95a23c TL |
4304 | |
4305 | ceph_assert(dnl->is_null()); | |
4306 | ||
7c673cae FG |
4307 | // set layout |
4308 | file_layout_t layout; | |
9f95a23c TL |
4309 | if (mdr->dir_layout != file_layout_t()) |
4310 | layout = mdr->dir_layout; | |
7c673cae FG |
4311 | else |
4312 | layout = mdcache->default_file_layout; | |
4313 | ||
4314 | // What kind of client caps are required to complete this operation | |
4315 | uint64_t access = MAY_WRITE; | |
4316 | ||
4317 | const auto default_layout = layout; | |
4318 | ||
4319 | // fill in any special params from client | |
4320 | if (req->head.args.open.stripe_unit) | |
4321 | layout.stripe_unit = req->head.args.open.stripe_unit; | |
4322 | if (req->head.args.open.stripe_count) | |
4323 | layout.stripe_count = req->head.args.open.stripe_count; | |
4324 | if (req->head.args.open.object_size) | |
4325 | layout.object_size = req->head.args.open.object_size; | |
4326 | if (req->get_connection()->has_feature(CEPH_FEATURE_CREATEPOOLID) && | |
4327 | (__s32)req->head.args.open.pool >= 0) { | |
4328 | layout.pool_id = req->head.args.open.pool; | |
4329 | ||
4330 | // make sure we have as new a map as the client | |
4331 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
4332 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
4333 | return; | |
4334 | } | |
4335 | } | |
4336 | ||
4337 | // If client doesn't have capability to modify layout pools, then | |
4338 | // only permit this request if the requested pool matches what the | |
4339 | // file would have inherited anyway from its parent. | |
4340 | if (default_layout != layout) { | |
4341 | access |= MAY_SET_VXATTR; | |
4342 | } | |
4343 | ||
4344 | if (!layout.is_valid()) { | |
4345 | dout(10) << " invalid initial file layout" << dendl; | |
4346 | respond_to_request(mdr, -EINVAL); | |
4347 | return; | |
4348 | } | |
4349 | if (!mds->mdsmap->is_data_pool(layout.pool_id)) { | |
4350 | dout(10) << " invalid data pool " << layout.pool_id << dendl; | |
4351 | respond_to_request(mdr, -EINVAL); | |
4352 | return; | |
4353 | } | |
4354 | ||
c07f9fc5 | 4355 | // created null dn. |
7c673cae FG |
4356 | CDir *dir = dn->get_dir(); |
4357 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
4358 | if (!check_access(mdr, diri, access)) |
4359 | return; | |
7c673cae FG |
4360 | if (!check_fragment_space(mdr, dir)) |
4361 | return; | |
4362 | ||
9f95a23c TL |
4363 | if (mdr->dn[0].size() == 1) |
4364 | mds->locker->create_lock_cache(mdr, diri, &mdr->dir_layout); | |
7c673cae | 4365 | |
7c673cae | 4366 | // create inode. |
7c673cae FG |
4367 | CInode *in = prepare_new_inode(mdr, dn->get_dir(), inodeno_t(req->head.ino), |
4368 | req->head.args.open.mode | S_IFREG, &layout); | |
11fdf7f2 | 4369 | ceph_assert(in); |
7c673cae FG |
4370 | |
4371 | // it's a file. | |
4372 | dn->push_projected_linkage(in); | |
4373 | ||
4374 | in->inode.version = dn->pre_dirty(); | |
4375 | if (layout.pool_id != mdcache->default_file_layout.pool_id) | |
4376 | in->inode.add_old_pool(mdcache->default_file_layout.pool_id); | |
4377 | in->inode.update_backtrace(); | |
a8e16298 TL |
4378 | in->inode.rstat.rfiles = 1; |
4379 | ||
4380 | SnapRealm *realm = diri->find_snaprealm(); | |
11fdf7f2 TL |
4381 | snapid_t follows = mdcache->get_global_snaprealm()->get_newest_seq(); |
4382 | ceph_assert(follows >= realm->get_newest_seq()); | |
a8e16298 TL |
4383 | |
4384 | ceph_assert(dn->first == follows+1); | |
4385 | in->first = dn->first; | |
4386 | ||
4387 | // do the open | |
9f95a23c | 4388 | Capability *cap = mds->locker->issue_new_caps(in, cmode, mdr, realm); |
a8e16298 TL |
4389 | in->authlock.set_state(LOCK_EXCL); |
4390 | in->xattrlock.set_state(LOCK_EXCL); | |
4391 | ||
4392 | if (cap && (cmode & CEPH_FILE_MODE_WR)) { | |
7c673cae | 4393 | in->inode.client_ranges[client].range.first = 0; |
9f95a23c | 4394 | in->inode.client_ranges[client].range.last = in->inode.layout.stripe_unit; |
7c673cae | 4395 | in->inode.client_ranges[client].follows = follows; |
f91f0fd5 | 4396 | in->mark_clientwriteable(); |
a8e16298 | 4397 | cap->mark_clientwriteable(); |
7c673cae | 4398 | } |
7c673cae FG |
4399 | |
4400 | // prepare finisher | |
4401 | mdr->ls = mdlog->get_current_segment(); | |
4402 | EUpdate *le = new EUpdate(mdlog, "openc"); | |
4403 | mdlog->start_entry(le); | |
4404 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
4405 | journal_allocated_inos(mdr, &le->metablob); | |
4406 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
4407 | le->metablob.add_primary_dentry(dn, in, true, true, true); | |
4408 | ||
7c673cae FG |
4409 | // make sure this inode gets into the journal |
4410 | le->metablob.add_opened_ino(in->ino()); | |
7c673cae | 4411 | |
11fdf7f2 | 4412 | C_MDS_openc_finish *fin = new C_MDS_openc_finish(this, mdr, dn, in); |
7c673cae | 4413 | |
9f95a23c TL |
4414 | if (mdr->session->info.has_feature(CEPHFS_FEATURE_DELEG_INO)) { |
4415 | openc_response_t ocresp; | |
4416 | ||
4417 | dout(10) << "adding created_ino and delegated_inos" << dendl; | |
4418 | ocresp.created_ino = in->inode.ino; | |
4419 | ||
4420 | if (delegate_inos_pct && !req->is_queued_for_replay()) { | |
4421 | // Try to delegate some prealloc_inos to the client, if it's down to half the max | |
4422 | unsigned frac = 100 / delegate_inos_pct; | |
4423 | if (mdr->session->delegated_inos.size() < (unsigned)g_conf()->mds_client_prealloc_inos / frac / 2) | |
4424 | mdr->session->delegate_inos(g_conf()->mds_client_prealloc_inos / frac, ocresp.delegated_inos); | |
4425 | } | |
4426 | ||
4427 | encode(ocresp, mdr->reply_extra_bl); | |
4428 | } else if (mdr->client_request->get_connection()->has_feature(CEPH_FEATURE_REPLY_CREATE_INODE)) { | |
7c673cae FG |
4429 | dout(10) << "adding ino to reply to indicate inode was created" << dendl; |
4430 | // add the file created flag onto the reply if create_flags features is supported | |
11fdf7f2 | 4431 | encode(in->inode.ino, mdr->reply_extra_bl); |
7c673cae FG |
4432 | } |
4433 | ||
4434 | journal_and_reply(mdr, in, dn, le, fin); | |
4435 | ||
4436 | // We hit_dir (via hit_inode) in our finish callback, but by then we might | |
4437 | // have overshot the split size (multiple opencs in flight), so here is | |
4438 | // an early chance to split the dir if this openc makes it oversized. | |
4439 | mds->balancer->maybe_fragment(dir, false); | |
4440 | } | |
4441 | ||
4442 | ||
4443 | ||
4444 | void Server::handle_client_readdir(MDRequestRef& mdr) | |
4445 | { | |
9f95a23c | 4446 | const cref_t<MClientRequest> &req = mdr->client_request; |
adb31ebb | 4447 | Session *session = mds->get_session(req); |
7c673cae | 4448 | client_t client = req->get_source().num(); |
11fdf7f2 | 4449 | MutationImpl::LockOpVec lov; |
9f95a23c | 4450 | CInode *diri = rdlock_path_pin_ref(mdr, false, true); |
7c673cae FG |
4451 | if (!diri) return; |
4452 | ||
4453 | // it's a directory, right? | |
4454 | if (!diri->is_dir()) { | |
4455 | // not a dir | |
4456 | dout(10) << "reply to " << *req << " readdir -ENOTDIR" << dendl; | |
4457 | respond_to_request(mdr, -ENOTDIR); | |
4458 | return; | |
4459 | } | |
4460 | ||
adb31ebb TL |
4461 | auto num_caps = session->get_num_caps(); |
4462 | auto session_cap_acquisition = session->get_cap_acquisition(); | |
4463 | ||
4464 | if (num_caps > static_cast<uint64_t>(max_caps_per_client * max_caps_throttle_ratio) && session_cap_acquisition >= cap_acquisition_throttle) { | |
4465 | dout(20) << "readdir throttled. max_caps_per_client: " << max_caps_per_client << " num_caps: " << num_caps | |
4466 | << " session_cap_acquistion: " << session_cap_acquisition << " cap_acquisition_throttle: " << cap_acquisition_throttle << dendl; | |
4467 | if (logger) | |
4468 | logger->inc(l_mdss_cap_acquisition_throttle); | |
4469 | ||
4470 | mds->timer.add_event_after(caps_throttle_retry_request_timeout, new C_MDS_RetryRequest(mdcache, mdr)); | |
4471 | return; | |
4472 | } | |
4473 | ||
11fdf7f2 TL |
4474 | lov.add_rdlock(&diri->filelock); |
4475 | lov.add_rdlock(&diri->dirfragtreelock); | |
7c673cae | 4476 | |
11fdf7f2 | 4477 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
4478 | return; |
4479 | ||
4480 | if (!check_access(mdr, diri, MAY_READ)) | |
4481 | return; | |
4482 | ||
4483 | // which frag? | |
4484 | frag_t fg = (__u32)req->head.args.readdir.frag; | |
4485 | unsigned req_flags = (__u32)req->head.args.readdir.flags; | |
4486 | string offset_str = req->get_path2(); | |
4487 | ||
4488 | __u32 offset_hash = 0; | |
4489 | if (!offset_str.empty()) | |
4490 | offset_hash = ceph_frag_value(diri->hash_dentry_name(offset_str)); | |
4491 | else | |
4492 | offset_hash = (__u32)req->head.args.readdir.offset_hash; | |
4493 | ||
4494 | dout(10) << " frag " << fg << " offset '" << offset_str << "'" | |
4495 | << " offset_hash " << offset_hash << " flags " << req_flags << dendl; | |
4496 | ||
4497 | // does the frag exist? | |
4498 | if (diri->dirfragtree[fg.value()] != fg) { | |
4499 | frag_t newfg; | |
4500 | if (req_flags & CEPH_READDIR_REPLY_BITFLAGS) { | |
4501 | if (fg.contains((unsigned)offset_hash)) { | |
4502 | newfg = diri->dirfragtree[offset_hash]; | |
4503 | } else { | |
4504 | // client actually wants next frag | |
4505 | newfg = diri->dirfragtree[fg.value()]; | |
4506 | } | |
4507 | } else { | |
4508 | offset_str.clear(); | |
4509 | newfg = diri->dirfragtree[fg.value()]; | |
4510 | } | |
4511 | dout(10) << " adjust frag " << fg << " -> " << newfg << " " << diri->dirfragtree << dendl; | |
4512 | fg = newfg; | |
4513 | } | |
4514 | ||
4515 | CDir *dir = try_open_auth_dirfrag(diri, fg, mdr); | |
4516 | if (!dir) return; | |
4517 | ||
4518 | // ok! | |
4519 | dout(10) << "handle_client_readdir on " << *dir << dendl; | |
11fdf7f2 | 4520 | ceph_assert(dir->is_auth()); |
7c673cae FG |
4521 | |
4522 | if (!dir->is_complete()) { | |
4523 | if (dir->is_frozen()) { | |
4524 | dout(7) << "dir is frozen " << *dir << dendl; | |
4525 | mds->locker->drop_locks(mdr.get()); | |
4526 | mdr->drop_local_auth_pins(); | |
4527 | dir->add_waiter(CDir::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
4528 | return; | |
4529 | } | |
4530 | // fetch | |
4531 | dout(10) << " incomplete dir contents for readdir on " << *dir << ", fetching" << dendl; | |
4532 | dir->fetch(new C_MDS_RetryRequest(mdcache, mdr), true); | |
4533 | return; | |
4534 | } | |
4535 | ||
4536 | #ifdef MDS_VERIFY_FRAGSTAT | |
4537 | dir->verify_fragstat(); | |
4538 | #endif | |
4539 | ||
4540 | utime_t now = ceph_clock_now(); | |
4541 | mdr->set_mds_stamp(now); | |
4542 | ||
4543 | snapid_t snapid = mdr->snapid; | |
4544 | dout(10) << "snapid " << snapid << dendl; | |
4545 | ||
4546 | SnapRealm *realm = diri->find_snaprealm(); | |
4547 | ||
4548 | unsigned max = req->head.args.readdir.max_entries; | |
4549 | if (!max) | |
4550 | max = dir->get_num_any(); // whatever, something big. | |
4551 | unsigned max_bytes = req->head.args.readdir.max_bytes; | |
4552 | if (!max_bytes) | |
4553 | // make sure at least one item can be encoded | |
11fdf7f2 | 4554 | max_bytes = (512 << 10) + g_conf()->mds_max_xattr_pairs_size; |
7c673cae FG |
4555 | |
4556 | // start final blob | |
4557 | bufferlist dirbl; | |
11fdf7f2 TL |
4558 | DirStat ds; |
4559 | ds.frag = dir->get_frag(); | |
4560 | ds.auth = dir->get_dir_auth().first; | |
f91f0fd5 | 4561 | if (dir->is_auth() && !forward_all_requests_to_auth) |
11fdf7f2 TL |
4562 | dir->get_dist_spec(ds.dist, mds->get_nodeid()); |
4563 | ||
4564 | dir->encode_dirstat(dirbl, mdr->session->info, ds); | |
7c673cae FG |
4565 | |
4566 | // count bytes available. | |
4567 | // this isn't perfect, but we should capture the main variable/unbounded size items! | |
4568 | int front_bytes = dirbl.length() + sizeof(__u32) + sizeof(__u8)*2; | |
4569 | int bytes_left = max_bytes - front_bytes; | |
4570 | bytes_left -= realm->get_snap_trace().length(); | |
4571 | ||
4572 | // build dir contents | |
4573 | bufferlist dnbl; | |
4574 | __u32 numfiles = 0; | |
4575 | bool start = !offset_hash && offset_str.empty(); | |
7c673cae FG |
4576 | // skip all dns < dentry_key_t(snapid, offset_str, offset_hash) |
4577 | dentry_key_t skip_key(snapid, offset_str.c_str(), offset_hash); | |
181888fb FG |
4578 | auto it = start ? dir->begin() : dir->lower_bound(skip_key); |
4579 | bool end = (it == dir->end()); | |
4580 | for (; !end && numfiles < max; end = (it == dir->end())) { | |
7c673cae FG |
4581 | CDentry *dn = it->second; |
4582 | ++it; | |
4583 | ||
4584 | if (dn->state_test(CDentry::STATE_PURGING)) | |
4585 | continue; | |
4586 | ||
4587 | bool dnp = dn->use_projected(client, mdr); | |
4588 | CDentry::linkage_t *dnl = dnp ? dn->get_projected_linkage() : dn->get_linkage(); | |
4589 | ||
4590 | if (dnl->is_null()) | |
4591 | continue; | |
4592 | ||
4593 | if (dn->last < snapid || dn->first > snapid) { | |
4594 | dout(20) << "skipping non-overlapping snap " << *dn << dendl; | |
4595 | continue; | |
4596 | } | |
4597 | ||
4598 | if (!start) { | |
4599 | dentry_key_t offset_key(dn->last, offset_str.c_str(), offset_hash); | |
4600 | if (!(offset_key < dn->key())) | |
4601 | continue; | |
4602 | } | |
4603 | ||
4604 | CInode *in = dnl->get_inode(); | |
4605 | ||
4606 | if (in && in->ino() == CEPH_INO_CEPH) | |
4607 | continue; | |
4608 | ||
4609 | // remote link? | |
4610 | // better for the MDS to do the work, if we think the client will stat any of these files. | |
4611 | if (dnl->is_remote() && !in) { | |
4612 | in = mdcache->get_inode(dnl->get_remote_ino()); | |
4613 | if (in) { | |
4614 | dn->link_remote(dnl, in); | |
4615 | } else if (dn->state_test(CDentry::STATE_BADREMOTEINO)) { | |
4616 | dout(10) << "skipping bad remote ino on " << *dn << dendl; | |
4617 | continue; | |
4618 | } else { | |
4619 | // touch everything i _do_ have | |
94b18763 FG |
4620 | for (auto &p : *dir) { |
4621 | if (!p.second->get_linkage()->is_null()) | |
4622 | mdcache->lru.lru_touch(p.second); | |
4623 | } | |
7c673cae FG |
4624 | |
4625 | // already issued caps and leases, reply immediately. | |
4626 | if (dnbl.length() > 0) { | |
4627 | mdcache->open_remote_dentry(dn, dnp, new C_MDSInternalNoop); | |
4628 | dout(10) << " open remote dentry after caps were issued, stopping at " | |
4629 | << dnbl.length() << " < " << bytes_left << dendl; | |
4630 | break; | |
4631 | } | |
4632 | ||
4633 | mds->locker->drop_locks(mdr.get()); | |
4634 | mdr->drop_local_auth_pins(); | |
4635 | mdcache->open_remote_dentry(dn, dnp, new C_MDS_RetryRequest(mdcache, mdr)); | |
4636 | return; | |
4637 | } | |
4638 | } | |
11fdf7f2 | 4639 | ceph_assert(in); |
7c673cae | 4640 | |
94b18763 | 4641 | if ((int)(dnbl.length() + dn->get_name().length() + sizeof(__u32) + sizeof(LeaseStat)) > bytes_left) { |
7c673cae FG |
4642 | dout(10) << " ran out of room, stopping at " << dnbl.length() << " < " << bytes_left << dendl; |
4643 | break; | |
4644 | } | |
4645 | ||
4646 | unsigned start_len = dnbl.length(); | |
4647 | ||
4648 | // dentry | |
4649 | dout(12) << "including dn " << *dn << dendl; | |
11fdf7f2 | 4650 | encode(dn->get_name(), dnbl); |
9f95a23c TL |
4651 | int lease_mask = dnl->is_primary() ? CEPH_LEASE_PRIMARY_LINK : 0; |
4652 | mds->locker->issue_client_lease(dn, mdr, lease_mask, now, dnbl); | |
7c673cae FG |
4653 | |
4654 | // inode | |
4655 | dout(12) << "including inode " << *in << dendl; | |
4656 | int r = in->encode_inodestat(dnbl, mdr->session, realm, snapid, bytes_left - (int)dnbl.length()); | |
4657 | if (r < 0) { | |
4658 | // chop off dn->name, lease | |
4659 | dout(10) << " ran out of room, stopping at " << start_len << " < " << bytes_left << dendl; | |
4660 | bufferlist keep; | |
4661 | keep.substr_of(dnbl, 0, start_len); | |
4662 | dnbl.swap(keep); | |
4663 | break; | |
4664 | } | |
11fdf7f2 | 4665 | ceph_assert(r >= 0); |
7c673cae FG |
4666 | numfiles++; |
4667 | ||
4668 | // touch dn | |
4669 | mdcache->lru.lru_touch(dn); | |
4670 | } | |
4671 | ||
adb31ebb TL |
4672 | session->touch_readdir_cap(numfiles); |
4673 | ||
7c673cae FG |
4674 | __u16 flags = 0; |
4675 | if (end) { | |
4676 | flags = CEPH_READDIR_FRAG_END; | |
4677 | if (start) | |
4678 | flags |= CEPH_READDIR_FRAG_COMPLETE; // FIXME: what purpose does this serve | |
4679 | } | |
4680 | // client only understand END and COMPLETE flags ? | |
4681 | if (req_flags & CEPH_READDIR_REPLY_BITFLAGS) { | |
4682 | flags |= CEPH_READDIR_HASH_ORDER | CEPH_READDIR_OFFSET_HASH; | |
4683 | } | |
4684 | ||
4685 | // finish final blob | |
11fdf7f2 TL |
4686 | encode(numfiles, dirbl); |
4687 | encode(flags, dirbl); | |
7c673cae FG |
4688 | dirbl.claim_append(dnbl); |
4689 | ||
4690 | // yay, reply | |
4691 | dout(10) << "reply to " << *req << " readdir num=" << numfiles | |
4692 | << " bytes=" << dirbl.length() | |
4693 | << " start=" << (int)start | |
4694 | << " end=" << (int)end | |
4695 | << dendl; | |
4696 | mdr->reply_extra_bl = dirbl; | |
4697 | ||
4698 | // bump popularity. NOTE: this doesn't quite capture it. | |
11fdf7f2 | 4699 | mds->balancer->hit_dir(dir, META_POP_IRD, -1, numfiles); |
7c673cae FG |
4700 | |
4701 | // reply | |
4702 | mdr->tracei = diri; | |
4703 | respond_to_request(mdr, 0); | |
4704 | } | |
4705 | ||
4706 | ||
4707 | ||
4708 | // =============================================================================== | |
4709 | // INODE UPDATES | |
4710 | ||
4711 | ||
4712 | /* | |
4713 | * finisher for basic inode updates | |
4714 | */ | |
4715 | class C_MDS_inode_update_finish : public ServerLogContext { | |
4716 | CInode *in; | |
adb31ebb | 4717 | bool truncating_smaller, changed_ranges, adjust_realm; |
7c673cae FG |
4718 | public: |
4719 | C_MDS_inode_update_finish(Server *s, MDRequestRef& r, CInode *i, | |
adb31ebb | 4720 | bool sm=false, bool cr=false, bool ar=false) : |
11fdf7f2 | 4721 | ServerLogContext(s, r), in(i), |
adb31ebb | 4722 | truncating_smaller(sm), changed_ranges(cr), adjust_realm(ar) { } |
7c673cae | 4723 | void finish(int r) override { |
11fdf7f2 | 4724 | ceph_assert(r == 0); |
7c673cae | 4725 | |
adb31ebb TL |
4726 | int snap_op = (in->snaprealm ? CEPH_SNAP_OP_UPDATE : CEPH_SNAP_OP_SPLIT); |
4727 | ||
7c673cae FG |
4728 | // apply |
4729 | in->pop_and_dirty_projected_inode(mdr->ls); | |
4730 | mdr->apply(); | |
4731 | ||
11fdf7f2 TL |
4732 | MDSRank *mds = get_mds(); |
4733 | ||
7c673cae FG |
4734 | // notify any clients |
4735 | if (truncating_smaller && in->inode.is_truncating()) { | |
11fdf7f2 TL |
4736 | mds->locker->issue_truncate(in); |
4737 | mds->mdcache->truncate_inode(in, mdr->ls); | |
4738 | } | |
4739 | ||
adb31ebb TL |
4740 | if (adjust_realm) { |
4741 | mds->mdcache->send_snap_update(in, 0, snap_op); | |
4742 | mds->mdcache->do_realm_invalidate_and_update_notify(in, snap_op); | |
7c673cae FG |
4743 | } |
4744 | ||
11fdf7f2 | 4745 | get_mds()->balancer->hit_inode(in, META_POP_IWR); |
7c673cae FG |
4746 | |
4747 | server->respond_to_request(mdr, 0); | |
4748 | ||
4749 | if (changed_ranges) | |
4750 | get_mds()->locker->share_inode_max_size(in); | |
4751 | } | |
4752 | }; | |
4753 | ||
4754 | void Server::handle_client_file_setlock(MDRequestRef& mdr) | |
4755 | { | |
9f95a23c | 4756 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 | 4757 | MutationImpl::LockOpVec lov; |
7c673cae FG |
4758 | |
4759 | // get the inode to operate on, and set up any locks needed for that | |
9f95a23c | 4760 | CInode *cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
4761 | if (!cur) |
4762 | return; | |
4763 | ||
11fdf7f2 | 4764 | lov.add_xlock(&cur->flocklock); |
7c673cae FG |
4765 | /* acquire_locks will return true if it gets the locks. If it fails, |
4766 | it will redeliver this request at a later date, so drop the request. | |
4767 | */ | |
11fdf7f2 | 4768 | if (!mds->locker->acquire_locks(mdr, lov)) { |
7c673cae FG |
4769 | dout(10) << "handle_client_file_setlock could not get locks!" << dendl; |
4770 | return; | |
4771 | } | |
4772 | ||
4773 | // copy the lock change into a ceph_filelock so we can store/apply it | |
4774 | ceph_filelock set_lock; | |
4775 | set_lock.start = req->head.args.filelock_change.start; | |
4776 | set_lock.length = req->head.args.filelock_change.length; | |
4777 | set_lock.client = req->get_orig_source().num(); | |
4778 | set_lock.owner = req->head.args.filelock_change.owner; | |
4779 | set_lock.pid = req->head.args.filelock_change.pid; | |
4780 | set_lock.type = req->head.args.filelock_change.type; | |
4781 | bool will_wait = req->head.args.filelock_change.wait; | |
4782 | ||
4783 | dout(10) << "handle_client_file_setlock: " << set_lock << dendl; | |
4784 | ||
4785 | ceph_lock_state_t *lock_state = NULL; | |
4786 | bool interrupt = false; | |
4787 | ||
4788 | // get the appropriate lock state | |
4789 | switch (req->head.args.filelock_change.rule) { | |
4790 | case CEPH_LOCK_FLOCK_INTR: | |
4791 | interrupt = true; | |
4792 | // fall-thru | |
4793 | case CEPH_LOCK_FLOCK: | |
4794 | lock_state = cur->get_flock_lock_state(); | |
4795 | break; | |
4796 | ||
4797 | case CEPH_LOCK_FCNTL_INTR: | |
4798 | interrupt = true; | |
4799 | // fall-thru | |
4800 | case CEPH_LOCK_FCNTL: | |
4801 | lock_state = cur->get_fcntl_lock_state(); | |
4802 | break; | |
4803 | ||
4804 | default: | |
4805 | dout(10) << "got unknown lock type " << set_lock.type | |
4806 | << ", dropping request!" << dendl; | |
4807 | respond_to_request(mdr, -EOPNOTSUPP); | |
4808 | return; | |
4809 | } | |
4810 | ||
4811 | dout(10) << " state prior to lock change: " << *lock_state << dendl; | |
4812 | if (CEPH_LOCK_UNLOCK == set_lock.type) { | |
4813 | list<ceph_filelock> activated_locks; | |
11fdf7f2 | 4814 | MDSContext::vec waiters; |
7c673cae FG |
4815 | if (lock_state->is_waiting(set_lock)) { |
4816 | dout(10) << " unlock removing waiting lock " << set_lock << dendl; | |
4817 | lock_state->remove_waiting(set_lock); | |
4818 | cur->take_waiting(CInode::WAIT_FLOCK, waiters); | |
4819 | } else if (!interrupt) { | |
4820 | dout(10) << " unlock attempt on " << set_lock << dendl; | |
4821 | lock_state->remove_lock(set_lock, activated_locks); | |
4822 | cur->take_waiting(CInode::WAIT_FLOCK, waiters); | |
4823 | } | |
4824 | mds->queue_waiters(waiters); | |
4825 | ||
4826 | respond_to_request(mdr, 0); | |
4827 | } else { | |
4828 | dout(10) << " lock attempt on " << set_lock << dendl; | |
4829 | bool deadlock = false; | |
4830 | if (mdr->more()->flock_was_waiting && | |
4831 | !lock_state->is_waiting(set_lock)) { | |
4832 | dout(10) << " was waiting for lock but not anymore, must have been canceled " << set_lock << dendl; | |
4833 | respond_to_request(mdr, -EINTR); | |
4834 | } else if (!lock_state->add_lock(set_lock, will_wait, mdr->more()->flock_was_waiting, &deadlock)) { | |
4835 | dout(10) << " it failed on this attempt" << dendl; | |
4836 | // couldn't set lock right now | |
4837 | if (deadlock) { | |
4838 | respond_to_request(mdr, -EDEADLK); | |
4839 | } else if (!will_wait) { | |
4840 | respond_to_request(mdr, -EWOULDBLOCK); | |
4841 | } else { | |
4842 | dout(10) << " added to waiting list" << dendl; | |
11fdf7f2 | 4843 | ceph_assert(lock_state->is_waiting(set_lock)); |
7c673cae FG |
4844 | mdr->more()->flock_was_waiting = true; |
4845 | mds->locker->drop_locks(mdr.get()); | |
4846 | mdr->drop_local_auth_pins(); | |
1adf2230 AA |
4847 | mdr->mark_event("failed to add lock, waiting"); |
4848 | mdr->mark_nowarn(); | |
7c673cae FG |
4849 | cur->add_waiter(CInode::WAIT_FLOCK, new C_MDS_RetryRequest(mdcache, mdr)); |
4850 | } | |
4851 | } else | |
4852 | respond_to_request(mdr, 0); | |
4853 | } | |
4854 | dout(10) << " state after lock change: " << *lock_state << dendl; | |
4855 | } | |
4856 | ||
4857 | void Server::handle_client_file_readlock(MDRequestRef& mdr) | |
4858 | { | |
9f95a23c | 4859 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 | 4860 | MutationImpl::LockOpVec lov; |
7c673cae FG |
4861 | |
4862 | // get the inode to operate on, and set up any locks needed for that | |
9f95a23c | 4863 | CInode *cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
4864 | if (!cur) |
4865 | return; | |
4866 | ||
4867 | /* acquire_locks will return true if it gets the locks. If it fails, | |
4868 | it will redeliver this request at a later date, so drop the request. | |
4869 | */ | |
11fdf7f2 TL |
4870 | lov.add_rdlock(&cur->flocklock); |
4871 | if (!mds->locker->acquire_locks(mdr, lov)) { | |
7c673cae FG |
4872 | dout(10) << "handle_client_file_readlock could not get locks!" << dendl; |
4873 | return; | |
4874 | } | |
4875 | ||
4876 | // copy the lock change into a ceph_filelock so we can store/apply it | |
4877 | ceph_filelock checking_lock; | |
4878 | checking_lock.start = req->head.args.filelock_change.start; | |
4879 | checking_lock.length = req->head.args.filelock_change.length; | |
4880 | checking_lock.client = req->get_orig_source().num(); | |
4881 | checking_lock.owner = req->head.args.filelock_change.owner; | |
4882 | checking_lock.pid = req->head.args.filelock_change.pid; | |
4883 | checking_lock.type = req->head.args.filelock_change.type; | |
4884 | ||
4885 | // get the appropriate lock state | |
4886 | ceph_lock_state_t *lock_state = NULL; | |
4887 | switch (req->head.args.filelock_change.rule) { | |
4888 | case CEPH_LOCK_FLOCK: | |
4889 | lock_state = cur->get_flock_lock_state(); | |
4890 | break; | |
4891 | ||
4892 | case CEPH_LOCK_FCNTL: | |
4893 | lock_state = cur->get_fcntl_lock_state(); | |
4894 | break; | |
4895 | ||
4896 | default: | |
4897 | dout(10) << "got unknown lock type " << checking_lock.type << dendl; | |
4898 | respond_to_request(mdr, -EINVAL); | |
4899 | return; | |
4900 | } | |
4901 | lock_state->look_for_lock(checking_lock); | |
4902 | ||
4903 | bufferlist lock_bl; | |
11fdf7f2 | 4904 | encode(checking_lock, lock_bl); |
7c673cae FG |
4905 | |
4906 | mdr->reply_extra_bl = lock_bl; | |
4907 | respond_to_request(mdr, 0); | |
4908 | } | |
4909 | ||
4910 | void Server::handle_client_setattr(MDRequestRef& mdr) | |
4911 | { | |
9f95a23c | 4912 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 | 4913 | MutationImpl::LockOpVec lov; |
9f95a23c | 4914 | CInode *cur = rdlock_path_pin_ref(mdr, true); |
7c673cae FG |
4915 | if (!cur) return; |
4916 | ||
4917 | if (mdr->snapid != CEPH_NOSNAP) { | |
4918 | respond_to_request(mdr, -EROFS); | |
4919 | return; | |
4920 | } | |
4921 | if (cur->ino() < MDS_INO_SYSTEM_BASE && !cur->is_base()) { | |
4922 | respond_to_request(mdr, -EPERM); | |
4923 | return; | |
4924 | } | |
4925 | ||
4926 | __u32 mask = req->head.args.setattr.mask; | |
4927 | __u32 access_mask = MAY_WRITE; | |
4928 | ||
4929 | // xlock inode | |
4930 | if (mask & (CEPH_SETATTR_MODE|CEPH_SETATTR_UID|CEPH_SETATTR_GID|CEPH_SETATTR_BTIME|CEPH_SETATTR_KILL_SGUID)) | |
11fdf7f2 | 4931 | lov.add_xlock(&cur->authlock); |
7c673cae | 4932 | if (mask & (CEPH_SETATTR_MTIME|CEPH_SETATTR_ATIME|CEPH_SETATTR_SIZE)) |
11fdf7f2 | 4933 | lov.add_xlock(&cur->filelock); |
7c673cae | 4934 | if (mask & CEPH_SETATTR_CTIME) |
11fdf7f2 | 4935 | lov.add_wrlock(&cur->versionlock); |
7c673cae | 4936 | |
11fdf7f2 | 4937 | if (!mds->locker->acquire_locks(mdr, lov)) |
7c673cae FG |
4938 | return; |
4939 | ||
4940 | if ((mask & CEPH_SETATTR_UID) && (cur->inode.uid != req->head.args.setattr.uid)) | |
4941 | access_mask |= MAY_CHOWN; | |
4942 | ||
4943 | if ((mask & CEPH_SETATTR_GID) && (cur->inode.gid != req->head.args.setattr.gid)) | |
4944 | access_mask |= MAY_CHGRP; | |
4945 | ||
4946 | if (!check_access(mdr, cur, access_mask)) | |
4947 | return; | |
4948 | ||
4949 | // trunc from bigger -> smaller? | |
94b18763 | 4950 | auto pip = cur->get_projected_inode(); |
7c673cae | 4951 | |
94b18763 | 4952 | uint64_t old_size = std::max<uint64_t>(pip->size, req->head.args.setattr.old_size); |
7c673cae FG |
4953 | |
4954 | // ENOSPC on growing file while full, but allow shrinks | |
4955 | if (is_full && req->head.args.setattr.size > old_size) { | |
4956 | dout(20) << __func__ << ": full, responding ENOSPC to setattr with larger size" << dendl; | |
4957 | respond_to_request(mdr, -ENOSPC); | |
4958 | return; | |
4959 | } | |
4960 | ||
4961 | bool truncating_smaller = false; | |
4962 | if (mask & CEPH_SETATTR_SIZE) { | |
4963 | truncating_smaller = req->head.args.setattr.size < old_size; | |
94b18763 FG |
4964 | if (truncating_smaller && pip->is_truncating()) { |
4965 | dout(10) << " waiting for pending truncate from " << pip->truncate_from | |
4966 | << " to " << pip->truncate_size << " to complete on " << *cur << dendl; | |
7c673cae FG |
4967 | mds->locker->drop_locks(mdr.get()); |
4968 | mdr->drop_local_auth_pins(); | |
4969 | cur->add_waiter(CInode::WAIT_TRUNC, new C_MDS_RetryRequest(mdcache, mdr)); | |
4970 | return; | |
4971 | } | |
4972 | } | |
4973 | ||
4974 | bool changed_ranges = false; | |
4975 | ||
4976 | // project update | |
4977 | mdr->ls = mdlog->get_current_segment(); | |
4978 | EUpdate *le = new EUpdate(mdlog, "setattr"); | |
4979 | mdlog->start_entry(le); | |
4980 | ||
94b18763 | 4981 | auto &pi = cur->project_inode(); |
7c673cae FG |
4982 | |
4983 | if (mask & CEPH_SETATTR_UID) | |
94b18763 | 4984 | pi.inode.uid = req->head.args.setattr.uid; |
7c673cae | 4985 | if (mask & CEPH_SETATTR_GID) |
94b18763 | 4986 | pi.inode.gid = req->head.args.setattr.gid; |
7c673cae FG |
4987 | |
4988 | if (mask & CEPH_SETATTR_MODE) | |
94b18763 | 4989 | pi.inode.mode = (pi.inode.mode & ~07777) | (req->head.args.setattr.mode & 07777); |
7c673cae | 4990 | else if ((mask & (CEPH_SETATTR_UID|CEPH_SETATTR_GID|CEPH_SETATTR_KILL_SGUID)) && |
94b18763 FG |
4991 | S_ISREG(pi.inode.mode) && |
4992 | (pi.inode.mode & (S_IXUSR|S_IXGRP|S_IXOTH))) { | |
4993 | pi.inode.mode &= ~(S_ISUID|S_ISGID); | |
7c673cae FG |
4994 | } |
4995 | ||
4996 | if (mask & CEPH_SETATTR_MTIME) | |
94b18763 | 4997 | pi.inode.mtime = req->head.args.setattr.mtime; |
7c673cae | 4998 | if (mask & CEPH_SETATTR_ATIME) |
94b18763 | 4999 | pi.inode.atime = req->head.args.setattr.atime; |
7c673cae | 5000 | if (mask & CEPH_SETATTR_BTIME) |
94b18763 | 5001 | pi.inode.btime = req->head.args.setattr.btime; |
7c673cae | 5002 | if (mask & (CEPH_SETATTR_ATIME | CEPH_SETATTR_MTIME | CEPH_SETATTR_BTIME)) |
94b18763 | 5003 | pi.inode.time_warp_seq++; // maybe not a timewarp, but still a serialization point. |
7c673cae FG |
5004 | if (mask & CEPH_SETATTR_SIZE) { |
5005 | if (truncating_smaller) { | |
94b18763 | 5006 | pi.inode.truncate(old_size, req->head.args.setattr.size); |
7c673cae FG |
5007 | le->metablob.add_truncate_start(cur->ino()); |
5008 | } else { | |
94b18763 FG |
5009 | pi.inode.size = req->head.args.setattr.size; |
5010 | pi.inode.rstat.rbytes = pi.inode.size; | |
7c673cae | 5011 | } |
94b18763 | 5012 | pi.inode.mtime = mdr->get_op_stamp(); |
7c673cae FG |
5013 | |
5014 | // adjust client's max_size? | |
f91f0fd5 TL |
5015 | if (mds->locker->calc_new_client_ranges(cur, pi.inode.size)) { |
5016 | dout(10) << " client_ranges " << cur->get_previous_projected_inode()->client_ranges | |
5017 | << " -> " << pi.inode.client_ranges << dendl; | |
7c673cae FG |
5018 | changed_ranges = true; |
5019 | } | |
5020 | } | |
5021 | ||
94b18763 | 5022 | pi.inode.version = cur->pre_dirty(); |
91327a77 AA |
5023 | pi.inode.ctime = mdr->get_op_stamp(); |
5024 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
5025 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 5026 | pi.inode.change_attr++; |
7c673cae FG |
5027 | |
5028 | // log + wait | |
5029 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5030 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5031 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5032 | ||
5033 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur, | |
5034 | truncating_smaller, changed_ranges)); | |
5035 | ||
5036 | // flush immediately if there are readers/writers waiting | |
11fdf7f2 | 5037 | if (mdr->is_xlocked(&cur->filelock) && |
7c673cae FG |
5038 | (cur->get_caps_wanted() & (CEPH_CAP_FILE_RD|CEPH_CAP_FILE_WR))) |
5039 | mds->mdlog->flush(); | |
5040 | } | |
5041 | ||
5042 | /* Takes responsibility for mdr */ | |
5043 | void Server::do_open_truncate(MDRequestRef& mdr, int cmode) | |
5044 | { | |
5045 | CInode *in = mdr->in[0]; | |
5046 | client_t client = mdr->get_client(); | |
11fdf7f2 | 5047 | ceph_assert(in); |
7c673cae FG |
5048 | |
5049 | dout(10) << "do_open_truncate " << *in << dendl; | |
5050 | ||
5051 | SnapRealm *realm = in->find_snaprealm(); | |
9f95a23c | 5052 | Capability *cap = mds->locker->issue_new_caps(in, cmode, mdr, realm); |
7c673cae FG |
5053 | |
5054 | mdr->ls = mdlog->get_current_segment(); | |
5055 | EUpdate *le = new EUpdate(mdlog, "open_truncate"); | |
5056 | mdlog->start_entry(le); | |
5057 | ||
5058 | // prepare | |
94b18763 FG |
5059 | auto &pi = in->project_inode(); |
5060 | pi.inode.version = in->pre_dirty(); | |
91327a77 AA |
5061 | pi.inode.mtime = pi.inode.ctime = mdr->get_op_stamp(); |
5062 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
5063 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 5064 | pi.inode.change_attr++; |
7c673cae | 5065 | |
94b18763 | 5066 | uint64_t old_size = std::max<uint64_t>(pi.inode.size, mdr->client_request->head.args.open.old_size); |
7c673cae | 5067 | if (old_size > 0) { |
94b18763 | 5068 | pi.inode.truncate(old_size, 0); |
7c673cae FG |
5069 | le->metablob.add_truncate_start(in->ino()); |
5070 | } | |
5071 | ||
5072 | bool changed_ranges = false; | |
a8e16298 | 5073 | if (cap && (cmode & CEPH_FILE_MODE_WR)) { |
94b18763 FG |
5074 | pi.inode.client_ranges[client].range.first = 0; |
5075 | pi.inode.client_ranges[client].range.last = pi.inode.get_layout_size_increment(); | |
11fdf7f2 | 5076 | pi.inode.client_ranges[client].follows = realm->get_newest_seq(); |
7c673cae | 5077 | changed_ranges = true; |
f91f0fd5 | 5078 | in->mark_clientwriteable(); |
a8e16298 | 5079 | cap->mark_clientwriteable(); |
7c673cae FG |
5080 | } |
5081 | ||
5082 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
5083 | ||
5084 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, 0, PREDIRTY_PRIMARY); | |
5085 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, in); | |
5086 | ||
5087 | // make sure ino gets into the journal | |
5088 | le->metablob.add_opened_ino(in->ino()); | |
7c673cae FG |
5089 | |
5090 | mdr->o_trunc = true; | |
5091 | ||
5092 | CDentry *dn = 0; | |
5093 | if (mdr->client_request->get_dentry_wanted()) { | |
11fdf7f2 | 5094 | ceph_assert(mdr->dn[0].size()); |
7c673cae FG |
5095 | dn = mdr->dn[0].back(); |
5096 | } | |
5097 | ||
5098 | journal_and_reply(mdr, in, dn, le, new C_MDS_inode_update_finish(this, mdr, in, old_size > 0, | |
5099 | changed_ranges)); | |
5100 | // Although the `open` part can give an early reply, the truncation won't | |
5101 | // happen until our EUpdate is persistent, to give the client a prompt | |
5102 | // response we must also flush that event. | |
5103 | mdlog->flush(); | |
5104 | } | |
5105 | ||
5106 | ||
5107 | /* This function cleans up the passed mdr */ | |
5108 | void Server::handle_client_setlayout(MDRequestRef& mdr) | |
5109 | { | |
9f95a23c TL |
5110 | const cref_t<MClientRequest> &req = mdr->client_request; |
5111 | CInode *cur = rdlock_path_pin_ref(mdr, true); | |
7c673cae FG |
5112 | if (!cur) return; |
5113 | ||
5114 | if (mdr->snapid != CEPH_NOSNAP) { | |
5115 | respond_to_request(mdr, -EROFS); | |
5116 | return; | |
5117 | } | |
5118 | if (!cur->is_file()) { | |
5119 | respond_to_request(mdr, -EINVAL); | |
5120 | return; | |
5121 | } | |
5122 | if (cur->get_projected_inode()->size || | |
5123 | cur->get_projected_inode()->truncate_seq > 1) { | |
5124 | respond_to_request(mdr, -ENOTEMPTY); | |
5125 | return; | |
5126 | } | |
5127 | ||
5128 | // validate layout | |
5129 | file_layout_t layout = cur->get_projected_inode()->layout; | |
5130 | // save existing layout for later | |
5131 | const auto old_layout = layout; | |
5132 | ||
5133 | int access = MAY_WRITE; | |
5134 | ||
5135 | if (req->head.args.setlayout.layout.fl_object_size > 0) | |
5136 | layout.object_size = req->head.args.setlayout.layout.fl_object_size; | |
5137 | if (req->head.args.setlayout.layout.fl_stripe_unit > 0) | |
5138 | layout.stripe_unit = req->head.args.setlayout.layout.fl_stripe_unit; | |
5139 | if (req->head.args.setlayout.layout.fl_stripe_count > 0) | |
5140 | layout.stripe_count=req->head.args.setlayout.layout.fl_stripe_count; | |
5141 | if (req->head.args.setlayout.layout.fl_pg_pool > 0) { | |
5142 | layout.pool_id = req->head.args.setlayout.layout.fl_pg_pool; | |
5143 | ||
5144 | // make sure we have as new a map as the client | |
5145 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
5146 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
5147 | return; | |
5148 | } | |
5149 | } | |
5150 | ||
5151 | // Don't permit layout modifications without 'p' caps | |
5152 | if (layout != old_layout) { | |
5153 | access |= MAY_SET_VXATTR; | |
5154 | } | |
5155 | ||
5156 | if (!layout.is_valid()) { | |
5157 | dout(10) << "bad layout" << dendl; | |
5158 | respond_to_request(mdr, -EINVAL); | |
5159 | return; | |
5160 | } | |
5161 | if (!mds->mdsmap->is_data_pool(layout.pool_id)) { | |
5162 | dout(10) << " invalid data pool " << layout.pool_id << dendl; | |
5163 | respond_to_request(mdr, -EINVAL); | |
5164 | return; | |
5165 | } | |
5166 | ||
9f95a23c | 5167 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
5168 | lov.add_xlock(&cur->filelock); |
5169 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
5170 | return; |
5171 | ||
5172 | if (!check_access(mdr, cur, access)) | |
5173 | return; | |
5174 | ||
5175 | // project update | |
94b18763 FG |
5176 | auto &pi = cur->project_inode(); |
5177 | pi.inode.layout = layout; | |
7c673cae | 5178 | // add the old pool to the inode |
94b18763 FG |
5179 | pi.inode.add_old_pool(old_layout.pool_id); |
5180 | pi.inode.version = cur->pre_dirty(); | |
91327a77 AA |
5181 | pi.inode.ctime = mdr->get_op_stamp(); |
5182 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
5183 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 5184 | pi.inode.change_attr++; |
7c673cae FG |
5185 | |
5186 | // log + wait | |
5187 | mdr->ls = mdlog->get_current_segment(); | |
5188 | EUpdate *le = new EUpdate(mdlog, "setlayout"); | |
5189 | mdlog->start_entry(le); | |
5190 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5191 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5192 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5193 | ||
5194 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); | |
5195 | } | |
5196 | ||
9f95a23c | 5197 | bool Server::xlock_policylock(MDRequestRef& mdr, CInode *in, bool want_layout, bool xlock_snaplock) |
7c673cae | 5198 | { |
9f95a23c TL |
5199 | if (mdr->locking_state & MutationImpl::ALL_LOCKED) |
5200 | return true; | |
5201 | ||
11fdf7f2 | 5202 | MutationImpl::LockOpVec lov; |
9f95a23c TL |
5203 | lov.add_xlock(&in->policylock); |
5204 | if (xlock_snaplock) | |
5205 | lov.add_xlock(&in->snaplock); | |
5206 | else | |
5207 | lov.add_rdlock(&in->snaplock); | |
5208 | if (!mds->locker->acquire_locks(mdr, lov)) | |
5209 | return false; | |
7c673cae | 5210 | |
9f95a23c TL |
5211 | if (want_layout && in->get_projected_inode()->has_layout()) { |
5212 | mdr->dir_layout = in->get_projected_inode()->layout; | |
5213 | want_layout = false; | |
5214 | } | |
5215 | if (CDentry *pdn = in->get_projected_parent_dn(); pdn) { | |
5216 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr, 0, want_layout)) | |
5217 | return false; | |
7c673cae FG |
5218 | } |
5219 | ||
9f95a23c TL |
5220 | mdr->locking_state |= MutationImpl::ALL_LOCKED; |
5221 | return true; | |
5222 | } | |
5223 | ||
5224 | CInode* Server::try_get_auth_inode(MDRequestRef& mdr, inodeno_t ino) | |
5225 | { | |
5226 | CInode *in = mdcache->get_inode(ino); | |
5227 | if (!in || in->state_test(CInode::STATE_PURGING)) { | |
5228 | respond_to_request(mdr, -ESTALE); | |
5229 | return nullptr; | |
5230 | } | |
5231 | if (!in->is_auth()) { | |
5232 | mdcache->request_forward(mdr, in->authority().first); | |
5233 | return nullptr; | |
5234 | } | |
5235 | ||
5236 | return in; | |
5237 | } | |
5238 | ||
5239 | void Server::handle_client_setdirlayout(MDRequestRef& mdr) | |
5240 | { | |
5241 | const cref_t<MClientRequest> &req = mdr->client_request; | |
5242 | ||
5243 | // can't use rdlock_path_pin_ref because we need to xlock snaplock/policylock | |
5244 | CInode *cur = try_get_auth_inode(mdr, req->get_filepath().get_ino()); | |
5245 | if (!cur) | |
5246 | return; | |
5247 | ||
7c673cae FG |
5248 | if (!cur->is_dir()) { |
5249 | respond_to_request(mdr, -ENOTDIR); | |
5250 | return; | |
5251 | } | |
5252 | ||
9f95a23c | 5253 | if (!xlock_policylock(mdr, cur, true)) |
7c673cae FG |
5254 | return; |
5255 | ||
5256 | // validate layout | |
94b18763 | 5257 | const auto old_pi = cur->get_projected_inode(); |
7c673cae FG |
5258 | file_layout_t layout; |
5259 | if (old_pi->has_layout()) | |
5260 | layout = old_pi->layout; | |
9f95a23c TL |
5261 | else if (mdr->dir_layout != file_layout_t()) |
5262 | layout = mdr->dir_layout; | |
7c673cae FG |
5263 | else |
5264 | layout = mdcache->default_file_layout; | |
5265 | ||
5266 | // Level of access required to complete | |
5267 | int access = MAY_WRITE; | |
5268 | ||
5269 | const auto old_layout = layout; | |
5270 | ||
5271 | if (req->head.args.setlayout.layout.fl_object_size > 0) | |
5272 | layout.object_size = req->head.args.setlayout.layout.fl_object_size; | |
5273 | if (req->head.args.setlayout.layout.fl_stripe_unit > 0) | |
5274 | layout.stripe_unit = req->head.args.setlayout.layout.fl_stripe_unit; | |
5275 | if (req->head.args.setlayout.layout.fl_stripe_count > 0) | |
5276 | layout.stripe_count=req->head.args.setlayout.layout.fl_stripe_count; | |
5277 | if (req->head.args.setlayout.layout.fl_pg_pool > 0) { | |
5278 | layout.pool_id = req->head.args.setlayout.layout.fl_pg_pool; | |
5279 | // make sure we have as new a map as the client | |
5280 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
5281 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
5282 | return; | |
5283 | } | |
5284 | } | |
5285 | ||
5286 | if (layout != old_layout) { | |
5287 | access |= MAY_SET_VXATTR; | |
5288 | } | |
5289 | ||
5290 | if (!layout.is_valid()) { | |
5291 | dout(10) << "bad layout" << dendl; | |
5292 | respond_to_request(mdr, -EINVAL); | |
5293 | return; | |
5294 | } | |
5295 | if (!mds->mdsmap->is_data_pool(layout.pool_id)) { | |
5296 | dout(10) << " invalid data pool " << layout.pool_id << dendl; | |
5297 | respond_to_request(mdr, -EINVAL); | |
5298 | return; | |
5299 | } | |
5300 | ||
5301 | if (!check_access(mdr, cur, access)) | |
5302 | return; | |
5303 | ||
94b18763 FG |
5304 | auto &pi = cur->project_inode(); |
5305 | pi.inode.layout = layout; | |
5306 | pi.inode.version = cur->pre_dirty(); | |
7c673cae FG |
5307 | |
5308 | // log + wait | |
5309 | mdr->ls = mdlog->get_current_segment(); | |
5310 | EUpdate *le = new EUpdate(mdlog, "setlayout"); | |
5311 | mdlog->start_entry(le); | |
5312 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5313 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5314 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5315 | ||
b32b8144 | 5316 | mdr->no_early_reply = true; |
7c673cae FG |
5317 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); |
5318 | } | |
5319 | ||
5320 | // XATTRS | |
5321 | ||
5322 | int Server::parse_layout_vxattr(string name, string value, const OSDMap& osdmap, | |
5323 | file_layout_t *layout, bool validate) | |
5324 | { | |
5325 | dout(20) << "parse_layout_vxattr name " << name << " value '" << value << "'" << dendl; | |
5326 | try { | |
5327 | if (name == "layout") { | |
5328 | string::iterator begin = value.begin(); | |
5329 | string::iterator end = value.end(); | |
5330 | keys_and_values<string::iterator> p; // create instance of parser | |
5331 | std::map<string, string> m; // map to receive results | |
5332 | if (!qi::parse(begin, end, p, m)) { // returns true if successful | |
5333 | return -EINVAL; | |
5334 | } | |
5335 | string left(begin, end); | |
5336 | dout(10) << " parsed " << m << " left '" << left << "'" << dendl; | |
5337 | if (begin != end) | |
5338 | return -EINVAL; | |
5339 | for (map<string,string>::iterator q = m.begin(); q != m.end(); ++q) { | |
5340 | // Skip validation on each attr, we do it once at the end (avoid | |
5341 | // rejecting intermediate states if the overall result is ok) | |
5342 | int r = parse_layout_vxattr(string("layout.") + q->first, q->second, | |
5343 | osdmap, layout, false); | |
5344 | if (r < 0) | |
5345 | return r; | |
5346 | } | |
5347 | } else if (name == "layout.object_size") { | |
5348 | layout->object_size = boost::lexical_cast<unsigned>(value); | |
5349 | } else if (name == "layout.stripe_unit") { | |
5350 | layout->stripe_unit = boost::lexical_cast<unsigned>(value); | |
5351 | } else if (name == "layout.stripe_count") { | |
5352 | layout->stripe_count = boost::lexical_cast<unsigned>(value); | |
5353 | } else if (name == "layout.pool") { | |
5354 | try { | |
5355 | layout->pool_id = boost::lexical_cast<unsigned>(value); | |
5356 | } catch (boost::bad_lexical_cast const&) { | |
5357 | int64_t pool = osdmap.lookup_pg_pool_name(value); | |
5358 | if (pool < 0) { | |
5359 | dout(10) << " unknown pool " << value << dendl; | |
5360 | return -ENOENT; | |
5361 | } | |
5362 | layout->pool_id = pool; | |
5363 | } | |
5364 | } else if (name == "layout.pool_namespace") { | |
5365 | layout->pool_ns = value; | |
5366 | } else { | |
5367 | dout(10) << " unknown layout vxattr " << name << dendl; | |
5368 | return -EINVAL; | |
5369 | } | |
5370 | } catch (boost::bad_lexical_cast const&) { | |
5371 | dout(10) << "bad vxattr value, unable to parse int for " << name << dendl; | |
5372 | return -EINVAL; | |
5373 | } | |
5374 | ||
5375 | if (validate && !layout->is_valid()) { | |
5376 | dout(10) << "bad layout" << dendl; | |
5377 | return -EINVAL; | |
5378 | } | |
5379 | if (!mds->mdsmap->is_data_pool(layout->pool_id)) { | |
5380 | dout(10) << " invalid data pool " << layout->pool_id << dendl; | |
5381 | return -EINVAL; | |
5382 | } | |
5383 | return 0; | |
5384 | } | |
5385 | ||
5386 | int Server::parse_quota_vxattr(string name, string value, quota_info_t *quota) | |
5387 | { | |
5388 | dout(20) << "parse_quota_vxattr name " << name << " value '" << value << "'" << dendl; | |
5389 | try { | |
5390 | if (name == "quota") { | |
5391 | string::iterator begin = value.begin(); | |
5392 | string::iterator end = value.end(); | |
11fdf7f2 TL |
5393 | if (begin == end) { |
5394 | // keep quota unchanged. (for create_quota_realm()) | |
5395 | return 0; | |
5396 | } | |
7c673cae FG |
5397 | keys_and_values<string::iterator> p; // create instance of parser |
5398 | std::map<string, string> m; // map to receive results | |
5399 | if (!qi::parse(begin, end, p, m)) { // returns true if successful | |
5400 | return -EINVAL; | |
5401 | } | |
5402 | string left(begin, end); | |
5403 | dout(10) << " parsed " << m << " left '" << left << "'" << dendl; | |
5404 | if (begin != end) | |
5405 | return -EINVAL; | |
5406 | for (map<string,string>::iterator q = m.begin(); q != m.end(); ++q) { | |
5407 | int r = parse_quota_vxattr(string("quota.") + q->first, q->second, quota); | |
5408 | if (r < 0) | |
5409 | return r; | |
5410 | } | |
5411 | } else if (name == "quota.max_bytes") { | |
5412 | int64_t q = boost::lexical_cast<int64_t>(value); | |
5413 | if (q < 0) | |
5414 | return -EINVAL; | |
5415 | quota->max_bytes = q; | |
5416 | } else if (name == "quota.max_files") { | |
5417 | int64_t q = boost::lexical_cast<int64_t>(value); | |
5418 | if (q < 0) | |
5419 | return -EINVAL; | |
5420 | quota->max_files = q; | |
5421 | } else { | |
5422 | dout(10) << " unknown quota vxattr " << name << dendl; | |
5423 | return -EINVAL; | |
5424 | } | |
5425 | } catch (boost::bad_lexical_cast const&) { | |
5426 | dout(10) << "bad vxattr value, unable to parse int for " << name << dendl; | |
5427 | return -EINVAL; | |
5428 | } | |
5429 | ||
5430 | if (!quota->is_valid()) { | |
5431 | dout(10) << "bad quota" << dendl; | |
5432 | return -EINVAL; | |
5433 | } | |
5434 | return 0; | |
5435 | } | |
5436 | ||
11fdf7f2 TL |
5437 | void Server::create_quota_realm(CInode *in) |
5438 | { | |
5439 | dout(10) << __func__ << " " << *in << dendl; | |
5440 | ||
9f95a23c | 5441 | auto req = make_message<MClientRequest>(CEPH_MDS_OP_SETXATTR); |
11fdf7f2 TL |
5442 | req->set_filepath(filepath(in->ino())); |
5443 | req->set_string2("ceph.quota"); | |
5444 | // empty vxattr value | |
5445 | req->set_tid(mds->issue_tid()); | |
5446 | ||
5447 | mds->send_message_mds(req, in->authority().first); | |
5448 | } | |
5449 | ||
7c673cae FG |
5450 | /* |
5451 | * Verify that the file layout attribute carried by client | |
5452 | * is well-formatted. | |
5453 | * Return 0 on success, otherwise this function takes | |
5454 | * responsibility for the passed mdr. | |
5455 | */ | |
5456 | int Server::check_layout_vxattr(MDRequestRef& mdr, | |
5457 | string name, | |
5458 | string value, | |
5459 | file_layout_t *layout) | |
5460 | { | |
9f95a23c | 5461 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
5462 | epoch_t epoch; |
5463 | int r; | |
5464 | ||
5465 | mds->objecter->with_osdmap([&](const OSDMap& osdmap) { | |
5466 | r = parse_layout_vxattr(name, value, osdmap, layout); | |
5467 | epoch = osdmap.get_epoch(); | |
5468 | }); | |
5469 | ||
5470 | if (r == -ENOENT) { | |
5471 | ||
5472 | // we don't have the specified pool, make sure our map | |
5473 | // is newer than or as new as the client. | |
5474 | epoch_t req_epoch = req->get_osdmap_epoch(); | |
5475 | ||
5476 | if (req_epoch > epoch) { | |
5477 | ||
5478 | // well, our map is older. consult mds. | |
5479 | Context *fin = new C_IO_Wrapper(mds, new C_MDS_RetryRequest(mdcache, mdr)); | |
5480 | ||
5481 | if (!mds->objecter->wait_for_map(req_epoch, fin)) | |
5482 | return r; // wait, fin will retry this request later | |
5483 | ||
5484 | delete fin; | |
5485 | ||
5486 | // now we have at least as new a map as the client, try again. | |
5487 | mds->objecter->with_osdmap([&](const OSDMap& osdmap) { | |
5488 | r = parse_layout_vxattr(name, value, osdmap, layout); | |
5489 | epoch = osdmap.get_epoch(); | |
5490 | }); | |
5491 | ||
11fdf7f2 | 5492 | ceph_assert(epoch >= req_epoch); // otherwise wait_for_map() told a lie |
7c673cae FG |
5493 | |
5494 | } else if (req_epoch == 0 && !mdr->waited_for_osdmap) { | |
5495 | ||
5496 | // For compatibility with client w/ old code, we still need get the | |
5497 | // latest map. One day if COMPACT_VERSION of MClientRequest >=3, | |
5498 | // we can remove those code. | |
5499 | mdr->waited_for_osdmap = true; | |
5500 | mds->objecter->wait_for_latest_osdmap(new C_IO_Wrapper( | |
5501 | mds, new C_MDS_RetryRequest(mdcache, mdr))); | |
5502 | return r; | |
5503 | } | |
5504 | } | |
5505 | ||
5506 | if (r < 0) { | |
5507 | ||
5508 | if (r == -ENOENT) | |
5509 | r = -EINVAL; | |
5510 | ||
5511 | respond_to_request(mdr, r); | |
5512 | return r; | |
5513 | } | |
5514 | ||
5515 | // all is well | |
5516 | return 0; | |
5517 | } | |
5518 | ||
9f95a23c | 5519 | void Server::handle_set_vxattr(MDRequestRef& mdr, CInode *cur) |
7c673cae | 5520 | { |
9f95a23c | 5521 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
5522 | string name(req->get_path2()); |
5523 | bufferlist bl = req->get_data(); | |
5524 | string value (bl.c_str(), bl.length()); | |
5525 | dout(10) << "handle_set_vxattr " << name | |
5526 | << " val " << value.length() | |
5527 | << " bytes on " << *cur | |
5528 | << dendl; | |
5529 | ||
94b18763 | 5530 | CInode::mempool_inode *pip = nullptr; |
7c673cae FG |
5531 | string rest; |
5532 | ||
5533 | if (!check_access(mdr, cur, MAY_SET_VXATTR)) { | |
5534 | return; | |
5535 | } | |
5536 | ||
adb31ebb | 5537 | bool adjust_realm = false; |
7c673cae FG |
5538 | if (name.compare(0, 15, "ceph.dir.layout") == 0) { |
5539 | if (!cur->is_dir()) { | |
5540 | respond_to_request(mdr, -EINVAL); | |
5541 | return; | |
5542 | } | |
5543 | ||
9f95a23c TL |
5544 | if (!xlock_policylock(mdr, cur, true)) |
5545 | return; | |
5546 | ||
7c673cae FG |
5547 | file_layout_t layout; |
5548 | if (cur->get_projected_inode()->has_layout()) | |
5549 | layout = cur->get_projected_inode()->layout; | |
9f95a23c TL |
5550 | else if (mdr->dir_layout != file_layout_t()) |
5551 | layout = mdr->dir_layout; | |
7c673cae FG |
5552 | else |
5553 | layout = mdcache->default_file_layout; | |
5554 | ||
5555 | rest = name.substr(name.find("layout")); | |
5556 | if (check_layout_vxattr(mdr, rest, value, &layout) < 0) | |
5557 | return; | |
5558 | ||
94b18763 FG |
5559 | auto &pi = cur->project_inode(); |
5560 | pi.inode.layout = layout; | |
b32b8144 | 5561 | mdr->no_early_reply = true; |
94b18763 | 5562 | pip = &pi.inode; |
7c673cae FG |
5563 | } else if (name.compare(0, 16, "ceph.file.layout") == 0) { |
5564 | if (!cur->is_file()) { | |
5565 | respond_to_request(mdr, -EINVAL); | |
5566 | return; | |
5567 | } | |
5568 | if (cur->get_projected_inode()->size || | |
5569 | cur->get_projected_inode()->truncate_seq > 1) { | |
5570 | respond_to_request(mdr, -ENOTEMPTY); | |
5571 | return; | |
5572 | } | |
5573 | file_layout_t layout = cur->get_projected_inode()->layout; | |
5574 | rest = name.substr(name.find("layout")); | |
5575 | if (check_layout_vxattr(mdr, rest, value, &layout) < 0) | |
5576 | return; | |
5577 | ||
9f95a23c | 5578 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
5579 | lov.add_xlock(&cur->filelock); |
5580 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
5581 | return; |
5582 | ||
94b18763 FG |
5583 | auto &pi = cur->project_inode(); |
5584 | int64_t old_pool = pi.inode.layout.pool_id; | |
5585 | pi.inode.add_old_pool(old_pool); | |
5586 | pi.inode.layout = layout; | |
94b18763 | 5587 | pip = &pi.inode; |
7c673cae FG |
5588 | } else if (name.compare(0, 10, "ceph.quota") == 0) { |
5589 | if (!cur->is_dir() || cur->is_root()) { | |
5590 | respond_to_request(mdr, -EINVAL); | |
5591 | return; | |
5592 | } | |
5593 | ||
5594 | quota_info_t quota = cur->get_projected_inode()->quota; | |
5595 | ||
5596 | rest = name.substr(name.find("quota")); | |
5597 | int r = parse_quota_vxattr(rest, value, "a); | |
5598 | if (r < 0) { | |
5599 | respond_to_request(mdr, r); | |
5600 | return; | |
5601 | } | |
5602 | ||
9f95a23c | 5603 | if (quota.is_enable() && !cur->get_projected_srnode()) |
adb31ebb TL |
5604 | adjust_realm = true; |
5605 | ||
5606 | if (!xlock_policylock(mdr, cur, false, adjust_realm)) | |
5607 | return; | |
11fdf7f2 | 5608 | |
adb31ebb TL |
5609 | if (cur->get_projected_inode()->quota == quota) { |
5610 | respond_to_request(mdr, 0); | |
7c673cae | 5611 | return; |
adb31ebb | 5612 | } |
7c673cae | 5613 | |
adb31ebb | 5614 | auto &pi = cur->project_inode(false, adjust_realm); |
94b18763 FG |
5615 | pi.inode.quota = quota; |
5616 | ||
adb31ebb TL |
5617 | if (adjust_realm) |
5618 | pi.snapnode->created = pi.snapnode->seq = cur->find_snaprealm()->get_newest_seq(); | |
5619 | ||
b32b8144 | 5620 | mdr->no_early_reply = true; |
94b18763 | 5621 | pip = &pi.inode; |
28e407b8 AA |
5622 | |
5623 | client_t exclude_ct = mdr->get_client(); | |
a8e16298 | 5624 | mdcache->broadcast_quota_to_client(cur, exclude_ct, true); |
adb31ebb TL |
5625 | } else if (name == "ceph.dir.subvolume"sv) { |
5626 | if (!cur->is_dir()) { | |
5627 | respond_to_request(mdr, -EINVAL); | |
5628 | return; | |
5629 | } | |
5630 | ||
5631 | bool val; | |
5632 | try { | |
5633 | val = boost::lexical_cast<bool>(value); | |
5634 | } catch (boost::bad_lexical_cast const&) { | |
5635 | dout(10) << "bad vxattr value, unable to parse bool for " << name << dendl; | |
5636 | respond_to_request(mdr, -EINVAL); | |
5637 | return; | |
5638 | } | |
5639 | ||
5640 | if (!xlock_policylock(mdr, cur, false, true)) | |
5641 | return; | |
5642 | ||
5643 | SnapRealm *realm = cur->find_snaprealm(); | |
5644 | if (val) { | |
5645 | inodeno_t subvol_ino = realm->get_subvolume_ino(); | |
5646 | // can't create subvolume inside another subvolume | |
5647 | if (subvol_ino && subvol_ino != cur->ino()) { | |
5648 | respond_to_request(mdr, -EINVAL); | |
5649 | return; | |
5650 | } | |
5651 | } | |
5652 | ||
5653 | const auto srnode = cur->get_projected_srnode(); | |
5654 | if (val == (srnode && srnode->is_subvolume())) { | |
5655 | respond_to_request(mdr, 0); | |
5656 | return; | |
5657 | } | |
5658 | ||
5659 | auto& pi = cur->project_inode(false, true); | |
5660 | if (!srnode) | |
5661 | pi.snapnode->created = pi.snapnode->seq = realm->get_newest_seq(); | |
5662 | if (val) | |
5663 | pi.snapnode->mark_subvolume(); | |
5664 | else | |
5665 | pi.snapnode->clear_subvolume(); | |
5666 | ||
5667 | mdr->no_early_reply = true; | |
5668 | pip = &pi.inode; | |
5669 | adjust_realm = true; | |
f6b5b4d7 | 5670 | } else if (name == "ceph.dir.pin"sv) { |
7c673cae FG |
5671 | if (!cur->is_dir() || cur->is_root()) { |
5672 | respond_to_request(mdr, -EINVAL); | |
5673 | return; | |
5674 | } | |
5675 | ||
5676 | mds_rank_t rank; | |
5677 | try { | |
5678 | rank = boost::lexical_cast<mds_rank_t>(value); | |
5679 | if (rank < 0) rank = MDS_RANK_NONE; | |
5680 | } catch (boost::bad_lexical_cast const&) { | |
5681 | dout(10) << "bad vxattr value, unable to parse int for " << name << dendl; | |
5682 | respond_to_request(mdr, -EINVAL); | |
5683 | return; | |
5684 | } | |
5685 | ||
9f95a23c | 5686 | if (!xlock_policylock(mdr, cur)) |
7c673cae FG |
5687 | return; |
5688 | ||
94b18763 | 5689 | auto &pi = cur->project_inode(); |
7c673cae | 5690 | cur->set_export_pin(rank); |
94b18763 | 5691 | pip = &pi.inode; |
f6b5b4d7 TL |
5692 | } else if (name == "ceph.dir.pin.random"sv) { |
5693 | if (!cur->is_dir() || cur->is_root()) { | |
5694 | respond_to_request(mdr, -EINVAL); | |
5695 | return; | |
5696 | } | |
5697 | ||
5698 | double val; | |
5699 | try { | |
5700 | val = boost::lexical_cast<double>(value); | |
5701 | } catch (boost::bad_lexical_cast const&) { | |
5702 | dout(10) << "bad vxattr value, unable to parse float for " << name << dendl; | |
5703 | respond_to_request(mdr, -EINVAL); | |
5704 | return; | |
5705 | } | |
5706 | ||
5707 | if (val < 0.0 || 1.0 < val) { | |
5708 | respond_to_request(mdr, -EDOM); | |
5709 | return; | |
5710 | } else if (mdcache->export_ephemeral_random_max < val) { | |
5711 | respond_to_request(mdr, -EINVAL); | |
5712 | return; | |
5713 | } | |
5714 | ||
5715 | if (!xlock_policylock(mdr, cur)) | |
5716 | return; | |
5717 | ||
5718 | auto &pi = cur->project_inode(); | |
5719 | cur->setxattr_ephemeral_rand(val); | |
5720 | pip = &pi.inode; | |
5721 | } else if (name == "ceph.dir.pin.distributed"sv) { | |
5722 | if (!cur->is_dir() || cur->is_root()) { | |
5723 | respond_to_request(mdr, -EINVAL); | |
5724 | return; | |
5725 | } | |
5726 | ||
5727 | bool val; | |
5728 | try { | |
5729 | val = boost::lexical_cast<bool>(value); | |
5730 | } catch (boost::bad_lexical_cast const&) { | |
5731 | dout(10) << "bad vxattr value, unable to parse bool for " << name << dendl; | |
5732 | respond_to_request(mdr, -EINVAL); | |
5733 | return; | |
5734 | } | |
5735 | ||
5736 | if (!xlock_policylock(mdr, cur)) | |
5737 | return; | |
5738 | ||
5739 | auto &pi = cur->project_inode(); | |
5740 | cur->setxattr_ephemeral_dist(val); | |
5741 | pip = &pi.inode; | |
7c673cae FG |
5742 | } else { |
5743 | dout(10) << " unknown vxattr " << name << dendl; | |
5744 | respond_to_request(mdr, -EINVAL); | |
5745 | return; | |
5746 | } | |
5747 | ||
94b18763 | 5748 | pip->change_attr++; |
91327a77 AA |
5749 | pip->ctime = mdr->get_op_stamp(); |
5750 | if (mdr->get_op_stamp() > pip->rstat.rctime) | |
5751 | pip->rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 5752 | pip->version = cur->pre_dirty(); |
7c673cae | 5753 | if (cur->is_file()) |
94b18763 | 5754 | pip->update_backtrace(); |
7c673cae FG |
5755 | |
5756 | // log + wait | |
5757 | mdr->ls = mdlog->get_current_segment(); | |
5758 | EUpdate *le = new EUpdate(mdlog, "set vxattr layout"); | |
5759 | mdlog->start_entry(le); | |
5760 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5761 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5762 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5763 | ||
11fdf7f2 | 5764 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur, |
adb31ebb | 5765 | false, false, adjust_realm)); |
7c673cae FG |
5766 | return; |
5767 | } | |
5768 | ||
9f95a23c | 5769 | void Server::handle_remove_vxattr(MDRequestRef& mdr, CInode *cur) |
7c673cae | 5770 | { |
9f95a23c | 5771 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
5772 | string name(req->get_path2()); |
5773 | ||
5774 | dout(10) << __func__ << " " << name << " on " << *cur << dendl; | |
5775 | ||
5776 | if (name == "ceph.dir.layout") { | |
5777 | if (!cur->is_dir()) { | |
5778 | respond_to_request(mdr, -ENODATA); | |
5779 | return; | |
5780 | } | |
5781 | if (cur->is_root()) { | |
5782 | dout(10) << "can't remove layout policy on the root directory" << dendl; | |
5783 | respond_to_request(mdr, -EINVAL); | |
5784 | return; | |
5785 | } | |
5786 | ||
5787 | if (!cur->get_projected_inode()->has_layout()) { | |
5788 | respond_to_request(mdr, -ENODATA); | |
5789 | return; | |
5790 | } | |
5791 | ||
9f95a23c | 5792 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
5793 | lov.add_xlock(&cur->policylock); |
5794 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
5795 | return; |
5796 | ||
94b18763 FG |
5797 | auto &pi = cur->project_inode(); |
5798 | pi.inode.clear_layout(); | |
5799 | pi.inode.version = cur->pre_dirty(); | |
7c673cae FG |
5800 | |
5801 | // log + wait | |
5802 | mdr->ls = mdlog->get_current_segment(); | |
5803 | EUpdate *le = new EUpdate(mdlog, "remove dir layout vxattr"); | |
5804 | mdlog->start_entry(le); | |
5805 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5806 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5807 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5808 | ||
b32b8144 | 5809 | mdr->no_early_reply = true; |
7c673cae FG |
5810 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); |
5811 | return; | |
5812 | } else if (name == "ceph.dir.layout.pool_namespace" | |
5813 | || name == "ceph.file.layout.pool_namespace") { | |
5814 | // Namespace is the only layout field that has a meaningful | |
5815 | // null/none value (empty string, means default layout). Is equivalent | |
5816 | // to a setxattr with empty string: pass through the empty payload of | |
5817 | // the rmxattr request to do this. | |
9f95a23c | 5818 | handle_set_vxattr(mdr, cur); |
7c673cae FG |
5819 | return; |
5820 | } | |
5821 | ||
5822 | respond_to_request(mdr, -ENODATA); | |
5823 | } | |
5824 | ||
5825 | class C_MDS_inode_xattr_update_finish : public ServerLogContext { | |
5826 | CInode *in; | |
5827 | public: | |
5828 | ||
5829 | C_MDS_inode_xattr_update_finish(Server *s, MDRequestRef& r, CInode *i) : | |
5830 | ServerLogContext(s, r), in(i) { } | |
5831 | void finish(int r) override { | |
11fdf7f2 | 5832 | ceph_assert(r == 0); |
7c673cae FG |
5833 | |
5834 | // apply | |
5835 | in->pop_and_dirty_projected_inode(mdr->ls); | |
5836 | ||
5837 | mdr->apply(); | |
5838 | ||
11fdf7f2 | 5839 | get_mds()->balancer->hit_inode(in, META_POP_IWR); |
7c673cae FG |
5840 | |
5841 | server->respond_to_request(mdr, 0); | |
5842 | } | |
5843 | }; | |
5844 | ||
5845 | void Server::handle_client_setxattr(MDRequestRef& mdr) | |
5846 | { | |
9f95a23c | 5847 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 5848 | string name(req->get_path2()); |
7c673cae | 5849 | |
9f95a23c TL |
5850 | // magic ceph.* namespace? |
5851 | if (name.compare(0, 5, "ceph.") == 0) { | |
5852 | // can't use rdlock_path_pin_ref because we need to xlock snaplock/policylock | |
5853 | CInode *cur = try_get_auth_inode(mdr, req->get_filepath().get_ino()); | |
5854 | if (!cur) | |
5855 | return; | |
5856 | ||
5857 | handle_set_vxattr(mdr, cur); | |
5858 | return; | |
5859 | } | |
5860 | ||
5861 | CInode *cur = rdlock_path_pin_ref(mdr, true); | |
7c673cae FG |
5862 | if (!cur) |
5863 | return; | |
5864 | ||
5865 | if (mdr->snapid != CEPH_NOSNAP) { | |
5866 | respond_to_request(mdr, -EROFS); | |
5867 | return; | |
5868 | } | |
5869 | ||
5870 | int flags = req->head.args.setxattr.flags; | |
5871 | ||
9f95a23c | 5872 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
5873 | lov.add_xlock(&cur->xattrlock); |
5874 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
5875 | return; |
5876 | ||
5877 | if (!check_access(mdr, cur, MAY_WRITE)) | |
5878 | return; | |
5879 | ||
94b18763 | 5880 | auto pxattrs = cur->get_projected_xattrs(); |
7c673cae FG |
5881 | size_t len = req->get_data().length(); |
5882 | size_t inc = len + name.length(); | |
5883 | ||
5884 | // check xattrs kv pairs size | |
5885 | size_t cur_xattrs_size = 0; | |
5886 | for (const auto& p : *pxattrs) { | |
11fdf7f2 | 5887 | if ((flags & CEPH_XATTR_REPLACE) && (name.compare(p.first) == 0)) { |
7c673cae FG |
5888 | continue; |
5889 | } | |
5890 | cur_xattrs_size += p.first.length() + p.second.length(); | |
5891 | } | |
5892 | ||
11fdf7f2 | 5893 | if (((cur_xattrs_size + inc) > g_conf()->mds_max_xattr_pairs_size)) { |
7c673cae FG |
5894 | dout(10) << "xattr kv pairs size too big. cur_xattrs_size " |
5895 | << cur_xattrs_size << ", inc " << inc << dendl; | |
5896 | respond_to_request(mdr, -ENOSPC); | |
5897 | return; | |
5898 | } | |
5899 | ||
11fdf7f2 | 5900 | if ((flags & CEPH_XATTR_CREATE) && pxattrs->count(mempool::mds_co::string(name))) { |
7c673cae FG |
5901 | dout(10) << "setxattr '" << name << "' XATTR_CREATE and EEXIST on " << *cur << dendl; |
5902 | respond_to_request(mdr, -EEXIST); | |
5903 | return; | |
5904 | } | |
11fdf7f2 | 5905 | if ((flags & CEPH_XATTR_REPLACE) && !pxattrs->count(mempool::mds_co::string(name))) { |
7c673cae FG |
5906 | dout(10) << "setxattr '" << name << "' XATTR_REPLACE and ENODATA on " << *cur << dendl; |
5907 | respond_to_request(mdr, -ENODATA); | |
5908 | return; | |
5909 | } | |
5910 | ||
5911 | dout(10) << "setxattr '" << name << "' len " << len << " on " << *cur << dendl; | |
5912 | ||
5913 | // project update | |
94b18763 FG |
5914 | auto &pi = cur->project_inode(true); |
5915 | pi.inode.version = cur->pre_dirty(); | |
91327a77 AA |
5916 | pi.inode.ctime = mdr->get_op_stamp(); |
5917 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
5918 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 FG |
5919 | pi.inode.change_attr++; |
5920 | pi.inode.xattr_version++; | |
5921 | auto &px = *pi.xattrs; | |
5922 | if ((flags & CEPH_XATTR_REMOVE)) { | |
11fdf7f2 | 5923 | px.erase(mempool::mds_co::string(name)); |
94b18763 FG |
5924 | } else { |
5925 | bufferptr b = buffer::create(len); | |
7c673cae | 5926 | if (len) |
9f95a23c | 5927 | req->get_data().begin().copy(len, b.c_str()); |
11fdf7f2 | 5928 | auto em = px.emplace(std::piecewise_construct, std::forward_as_tuple(mempool::mds_co::string(name)), std::forward_as_tuple(b)); |
94b18763 FG |
5929 | if (!em.second) |
5930 | em.first->second = b; | |
7c673cae FG |
5931 | } |
5932 | ||
5933 | // log + wait | |
5934 | mdr->ls = mdlog->get_current_segment(); | |
5935 | EUpdate *le = new EUpdate(mdlog, "setxattr"); | |
5936 | mdlog->start_entry(le); | |
5937 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5938 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5939 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
5940 | ||
5941 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); | |
5942 | } | |
5943 | ||
5944 | void Server::handle_client_removexattr(MDRequestRef& mdr) | |
5945 | { | |
9f95a23c | 5946 | const cref_t<MClientRequest> &req = mdr->client_request; |
94b18763 | 5947 | std::string name(req->get_path2()); |
11fdf7f2 | 5948 | |
9f95a23c TL |
5949 | if (name.compare(0, 5, "ceph.") == 0) { |
5950 | // can't use rdlock_path_pin_ref because we need to xlock snaplock/policylock | |
5951 | CInode *cur = try_get_auth_inode(mdr, req->get_filepath().get_ino()); | |
5952 | if (!cur) | |
5953 | return; | |
5954 | ||
5955 | handle_remove_vxattr(mdr, cur); | |
5956 | return; | |
5957 | } | |
5958 | ||
5959 | CInode* cur = rdlock_path_pin_ref(mdr, true); | |
7c673cae FG |
5960 | if (!cur) |
5961 | return; | |
5962 | ||
5963 | if (mdr->snapid != CEPH_NOSNAP) { | |
5964 | respond_to_request(mdr, -EROFS); | |
5965 | return; | |
5966 | } | |
5967 | ||
9f95a23c | 5968 | MutationImpl::LockOpVec lov; |
11fdf7f2 TL |
5969 | lov.add_xlock(&cur->xattrlock); |
5970 | if (!mds->locker->acquire_locks(mdr, lov)) | |
7c673cae FG |
5971 | return; |
5972 | ||
94b18763 | 5973 | auto pxattrs = cur->get_projected_xattrs(); |
11fdf7f2 | 5974 | if (pxattrs->count(mempool::mds_co::string(name)) == 0) { |
7c673cae FG |
5975 | dout(10) << "removexattr '" << name << "' and ENODATA on " << *cur << dendl; |
5976 | respond_to_request(mdr, -ENODATA); | |
5977 | return; | |
5978 | } | |
5979 | ||
5980 | dout(10) << "removexattr '" << name << "' on " << *cur << dendl; | |
5981 | ||
5982 | // project update | |
94b18763 FG |
5983 | auto &pi = cur->project_inode(true); |
5984 | auto &px = *pi.xattrs; | |
5985 | pi.inode.version = cur->pre_dirty(); | |
91327a77 AA |
5986 | pi.inode.ctime = mdr->get_op_stamp(); |
5987 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
5988 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 FG |
5989 | pi.inode.change_attr++; |
5990 | pi.inode.xattr_version++; | |
11fdf7f2 | 5991 | px.erase(mempool::mds_co::string(name)); |
7c673cae FG |
5992 | |
5993 | // log + wait | |
5994 | mdr->ls = mdlog->get_current_segment(); | |
5995 | EUpdate *le = new EUpdate(mdlog, "removexattr"); | |
5996 | mdlog->start_entry(le); | |
5997 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
5998 | mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY); | |
5999 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, cur); | |
6000 | ||
6001 | journal_and_reply(mdr, cur, 0, le, new C_MDS_inode_update_finish(this, mdr, cur)); | |
6002 | } | |
6003 | ||
6004 | ||
6005 | // ================================================================= | |
6006 | // DIRECTORY and NAMESPACE OPS | |
6007 | ||
6008 | ||
6009 | // ------------------------------------------------ | |
6010 | ||
6011 | // MKNOD | |
6012 | ||
6013 | class C_MDS_mknod_finish : public ServerLogContext { | |
6014 | CDentry *dn; | |
6015 | CInode *newi; | |
6016 | public: | |
6017 | C_MDS_mknod_finish(Server *s, MDRequestRef& r, CDentry *d, CInode *ni) : | |
6018 | ServerLogContext(s, r), dn(d), newi(ni) {} | |
6019 | void finish(int r) override { | |
11fdf7f2 | 6020 | ceph_assert(r == 0); |
7c673cae FG |
6021 | |
6022 | // link the inode | |
6023 | dn->pop_projected_linkage(); | |
6024 | ||
6025 | // be a bit hacky with the inode version, here.. we decrement it | |
6026 | // just to keep mark_dirty() happen. (we didn't bother projecting | |
6027 | // a new version of hte inode since it's just been created) | |
6028 | newi->inode.version--; | |
6029 | newi->mark_dirty(newi->inode.version + 1, mdr->ls); | |
28e407b8 | 6030 | newi->mark_dirty_parent(mdr->ls, true); |
7c673cae FG |
6031 | |
6032 | // mkdir? | |
6033 | if (newi->inode.is_dir()) { | |
6034 | CDir *dir = newi->get_dirfrag(frag_t()); | |
11fdf7f2 | 6035 | ceph_assert(dir); |
7c673cae FG |
6036 | dir->fnode.version--; |
6037 | dir->mark_dirty(dir->fnode.version + 1, mdr->ls); | |
6038 | dir->mark_new(mdr->ls); | |
6039 | } | |
6040 | ||
6041 | mdr->apply(); | |
6042 | ||
6043 | MDRequestRef null_ref; | |
6044 | get_mds()->mdcache->send_dentry_link(dn, null_ref); | |
6045 | ||
f6b5b4d7 | 6046 | if (newi->inode.is_file()) { |
7c673cae | 6047 | get_mds()->locker->share_inode_max_size(newi); |
f6b5b4d7 TL |
6048 | } else if (newi->inode.is_dir()) { |
6049 | // We do this now so that the linkages on the new directory are stable. | |
6050 | newi->maybe_ephemeral_dist(); | |
6051 | newi->maybe_ephemeral_rand(true); | |
6052 | } | |
7c673cae FG |
6053 | |
6054 | // hit pop | |
11fdf7f2 | 6055 | get_mds()->balancer->hit_inode(newi, META_POP_IWR); |
7c673cae FG |
6056 | |
6057 | // reply | |
6058 | server->respond_to_request(mdr, 0); | |
6059 | } | |
6060 | }; | |
6061 | ||
6062 | ||
6063 | void Server::handle_client_mknod(MDRequestRef& mdr) | |
6064 | { | |
9f95a23c | 6065 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 6066 | client_t client = mdr->get_client(); |
9f95a23c TL |
6067 | |
6068 | unsigned mode = req->head.args.mknod.mode; | |
6069 | if ((mode & S_IFMT) == 0) | |
6070 | mode |= S_IFREG; | |
6071 | ||
6072 | mdr->disable_lock_cache(); | |
6073 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true, false, S_ISREG(mode)); | |
6074 | if (!dn) | |
7c673cae FG |
6075 | return; |
6076 | ||
9f95a23c TL |
6077 | CDir *dir = dn->get_dir(); |
6078 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
6079 | if (!check_access(mdr, diri, MAY_WRITE)) |
6080 | return; | |
7c673cae FG |
6081 | if (!check_fragment_space(mdr, dn->get_dir())) |
6082 | return; | |
6083 | ||
7c673cae FG |
6084 | // set layout |
6085 | file_layout_t layout; | |
9f95a23c TL |
6086 | if (mdr->dir_layout != file_layout_t()) |
6087 | layout = mdr->dir_layout; | |
7c673cae FG |
6088 | else |
6089 | layout = mdcache->default_file_layout; | |
6090 | ||
11fdf7f2 TL |
6091 | CInode *newi = prepare_new_inode(mdr, dn->get_dir(), inodeno_t(req->head.ino), mode, &layout); |
6092 | ceph_assert(newi); | |
7c673cae FG |
6093 | |
6094 | dn->push_projected_linkage(newi); | |
6095 | ||
6096 | newi->inode.rdev = req->head.args.mknod.rdev; | |
6097 | newi->inode.version = dn->pre_dirty(); | |
6098 | newi->inode.rstat.rfiles = 1; | |
6099 | if (layout.pool_id != mdcache->default_file_layout.pool_id) | |
6100 | newi->inode.add_old_pool(mdcache->default_file_layout.pool_id); | |
6101 | newi->inode.update_backtrace(); | |
6102 | ||
11fdf7f2 TL |
6103 | snapid_t follows = mdcache->get_global_snaprealm()->get_newest_seq(); |
6104 | SnapRealm *realm = dn->get_dir()->inode->find_snaprealm(); | |
6105 | ceph_assert(follows >= realm->get_newest_seq()); | |
6106 | ||
7c673cae FG |
6107 | // if the client created a _regular_ file via MKNOD, it's highly likely they'll |
6108 | // want to write to it (e.g., if they are reexporting NFS) | |
6109 | if (S_ISREG(newi->inode.mode)) { | |
7c673cae FG |
6110 | // issue a cap on the file |
6111 | int cmode = CEPH_FILE_MODE_RDWR; | |
9f95a23c | 6112 | Capability *cap = mds->locker->issue_new_caps(newi, cmode, mdr, realm); |
7c673cae FG |
6113 | if (cap) { |
6114 | cap->set_wanted(0); | |
6115 | ||
6116 | // put locks in excl mode | |
6117 | newi->filelock.set_state(LOCK_EXCL); | |
6118 | newi->authlock.set_state(LOCK_EXCL); | |
6119 | newi->xattrlock.set_state(LOCK_EXCL); | |
a8e16298 TL |
6120 | |
6121 | dout(15) << " setting a client_range too, since this is a regular file" << dendl; | |
6122 | newi->inode.client_ranges[client].range.first = 0; | |
9f95a23c | 6123 | newi->inode.client_ranges[client].range.last = newi->inode.layout.stripe_unit; |
a8e16298 | 6124 | newi->inode.client_ranges[client].follows = follows; |
f91f0fd5 | 6125 | newi->mark_clientwriteable(); |
a8e16298 | 6126 | cap->mark_clientwriteable(); |
7c673cae FG |
6127 | } |
6128 | } | |
6129 | ||
11fdf7f2 | 6130 | ceph_assert(dn->first == follows + 1); |
7c673cae FG |
6131 | newi->first = dn->first; |
6132 | ||
6133 | dout(10) << "mknod mode " << newi->inode.mode << " rdev " << newi->inode.rdev << dendl; | |
6134 | ||
6135 | // prepare finisher | |
6136 | mdr->ls = mdlog->get_current_segment(); | |
6137 | EUpdate *le = new EUpdate(mdlog, "mknod"); | |
6138 | mdlog->start_entry(le); | |
6139 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6140 | journal_allocated_inos(mdr, &le->metablob); | |
6141 | ||
6142 | mdcache->predirty_journal_parents(mdr, &le->metablob, newi, dn->get_dir(), | |
6143 | PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
6144 | le->metablob.add_primary_dentry(dn, newi, true, true, true); | |
6145 | ||
6146 | journal_and_reply(mdr, newi, dn, le, new C_MDS_mknod_finish(this, mdr, dn, newi)); | |
92f5a8d4 | 6147 | mds->balancer->maybe_fragment(dn->get_dir(), false); |
7c673cae FG |
6148 | } |
6149 | ||
6150 | ||
6151 | ||
6152 | // MKDIR | |
6153 | /* This function takes responsibility for the passed mdr*/ | |
6154 | void Server::handle_client_mkdir(MDRequestRef& mdr) | |
6155 | { | |
9f95a23c | 6156 | const cref_t<MClientRequest> &req = mdr->client_request; |
91327a77 | 6157 | |
9f95a23c TL |
6158 | mdr->disable_lock_cache(); |
6159 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true); | |
6160 | if (!dn) | |
7c673cae | 6161 | return; |
9f95a23c | 6162 | |
7c673cae FG |
6163 | CDir *dir = dn->get_dir(); |
6164 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
6165 | |
6166 | // mkdir check access | |
6167 | if (!check_access(mdr, diri, MAY_WRITE)) | |
6168 | return; | |
6169 | ||
6170 | if (!check_fragment_space(mdr, dir)) | |
6171 | return; | |
6172 | ||
6173 | // new inode | |
7c673cae FG |
6174 | unsigned mode = req->head.args.mkdir.mode; |
6175 | mode &= ~S_IFMT; | |
6176 | mode |= S_IFDIR; | |
9f95a23c | 6177 | CInode *newi = prepare_new_inode(mdr, dir, inodeno_t(req->head.ino), mode); |
11fdf7f2 | 6178 | ceph_assert(newi); |
7c673cae FG |
6179 | |
6180 | // it's a directory. | |
6181 | dn->push_projected_linkage(newi); | |
6182 | ||
6183 | newi->inode.version = dn->pre_dirty(); | |
6184 | newi->inode.rstat.rsubdirs = 1; | |
6185 | newi->inode.update_backtrace(); | |
6186 | ||
11fdf7f2 TL |
6187 | snapid_t follows = mdcache->get_global_snaprealm()->get_newest_seq(); |
6188 | SnapRealm *realm = dn->get_dir()->inode->find_snaprealm(); | |
6189 | ceph_assert(follows >= realm->get_newest_seq()); | |
6190 | ||
7c673cae | 6191 | dout(12) << " follows " << follows << dendl; |
11fdf7f2 | 6192 | ceph_assert(dn->first == follows + 1); |
7c673cae FG |
6193 | newi->first = dn->first; |
6194 | ||
6195 | // ...and that new dir is empty. | |
6196 | CDir *newdir = newi->get_or_open_dirfrag(mdcache, frag_t()); | |
6197 | newdir->state_set(CDir::STATE_CREATING); | |
6198 | newdir->mark_complete(); | |
6199 | newdir->fnode.version = newdir->pre_dirty(); | |
6200 | ||
6201 | // prepare finisher | |
6202 | mdr->ls = mdlog->get_current_segment(); | |
6203 | EUpdate *le = new EUpdate(mdlog, "mkdir"); | |
6204 | mdlog->start_entry(le); | |
6205 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6206 | journal_allocated_inos(mdr, &le->metablob); | |
6207 | mdcache->predirty_journal_parents(mdr, &le->metablob, newi, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
6208 | le->metablob.add_primary_dentry(dn, newi, true, true); | |
6209 | le->metablob.add_new_dir(newdir); // dirty AND complete AND new | |
6210 | ||
6211 | // issue a cap on the directory | |
6212 | int cmode = CEPH_FILE_MODE_RDWR; | |
9f95a23c | 6213 | Capability *cap = mds->locker->issue_new_caps(newi, cmode, mdr, realm); |
7c673cae FG |
6214 | if (cap) { |
6215 | cap->set_wanted(0); | |
6216 | ||
6217 | // put locks in excl mode | |
6218 | newi->filelock.set_state(LOCK_EXCL); | |
6219 | newi->authlock.set_state(LOCK_EXCL); | |
6220 | newi->xattrlock.set_state(LOCK_EXCL); | |
6221 | } | |
6222 | ||
6223 | // make sure this inode gets into the journal | |
6224 | le->metablob.add_opened_ino(newi->ino()); | |
7c673cae FG |
6225 | |
6226 | journal_and_reply(mdr, newi, dn, le, new C_MDS_mknod_finish(this, mdr, dn, newi)); | |
81eedcae TL |
6227 | |
6228 | // We hit_dir (via hit_inode) in our finish callback, but by then we might | |
6229 | // have overshot the split size (multiple mkdir in flight), so here is | |
6230 | // an early chance to split the dir if this mkdir makes it oversized. | |
6231 | mds->balancer->maybe_fragment(dir, false); | |
7c673cae FG |
6232 | } |
6233 | ||
6234 | ||
6235 | // SYMLINK | |
6236 | ||
6237 | void Server::handle_client_symlink(MDRequestRef& mdr) | |
6238 | { | |
9f95a23c TL |
6239 | mdr->disable_lock_cache(); |
6240 | CDentry *dn = rdlock_path_xlock_dentry(mdr, true); | |
6241 | if (!dn) | |
7c673cae | 6242 | return; |
9f95a23c | 6243 | |
7c673cae FG |
6244 | CDir *dir = dn->get_dir(); |
6245 | CInode *diri = dir->get_inode(); | |
7c673cae FG |
6246 | |
6247 | if (!check_access(mdr, diri, MAY_WRITE)) | |
9f95a23c | 6248 | return; |
7c673cae FG |
6249 | if (!check_fragment_space(mdr, dir)) |
6250 | return; | |
6251 | ||
9f95a23c TL |
6252 | const cref_t<MClientRequest> &req = mdr->client_request; |
6253 | ||
7c673cae | 6254 | unsigned mode = S_IFLNK | 0777; |
9f95a23c | 6255 | CInode *newi = prepare_new_inode(mdr, dir, inodeno_t(req->head.ino), mode); |
11fdf7f2 | 6256 | ceph_assert(newi); |
7c673cae FG |
6257 | |
6258 | // it's a symlink | |
6259 | dn->push_projected_linkage(newi); | |
6260 | ||
11fdf7f2 | 6261 | newi->symlink = req->get_path2(); |
7c673cae FG |
6262 | newi->inode.size = newi->symlink.length(); |
6263 | newi->inode.rstat.rbytes = newi->inode.size; | |
6264 | newi->inode.rstat.rfiles = 1; | |
6265 | newi->inode.version = dn->pre_dirty(); | |
6266 | newi->inode.update_backtrace(); | |
6267 | ||
6268 | newi->first = dn->first; | |
6269 | ||
6270 | // prepare finisher | |
6271 | mdr->ls = mdlog->get_current_segment(); | |
6272 | EUpdate *le = new EUpdate(mdlog, "symlink"); | |
6273 | mdlog->start_entry(le); | |
6274 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
6275 | journal_allocated_inos(mdr, &le->metablob); | |
6276 | mdcache->predirty_journal_parents(mdr, &le->metablob, newi, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
6277 | le->metablob.add_primary_dentry(dn, newi, true, true); | |
6278 | ||
6279 | journal_and_reply(mdr, newi, dn, le, new C_MDS_mknod_finish(this, mdr, dn, newi)); | |
92f5a8d4 | 6280 | mds->balancer->maybe_fragment(dir, false); |
7c673cae FG |
6281 | } |
6282 | ||
6283 | ||
6284 | ||
6285 | ||
6286 | ||
6287 | // LINK | |
6288 | ||
6289 | void Server::handle_client_link(MDRequestRef& mdr) | |
6290 | { | |
9f95a23c | 6291 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
6292 | |
6293 | dout(7) << "handle_client_link " << req->get_filepath() | |
6294 | << " to " << req->get_filepath2() | |
6295 | << dendl; | |
6296 | ||
9f95a23c | 6297 | mdr->disable_lock_cache(); |
7c673cae | 6298 | |
9f95a23c TL |
6299 | CDentry *destdn; |
6300 | CInode *targeti; | |
6301 | ||
6302 | if (req->get_filepath2().depth() == 0) { | |
6303 | targeti = mdcache->get_inode(req->get_filepath2().get_ino()); | |
6304 | if (!targeti) { | |
6305 | dout(10) << "ESTALE on path2, attempting recovery" << dendl; | |
6306 | mdcache->find_ino_peers(req->get_filepath2().get_ino(), new C_MDS_TryFindInode(this, mdr)); | |
6307 | return; | |
6308 | } | |
6309 | mdr->pin(targeti); | |
6310 | ||
6311 | if (!(mdr->locking_state & MutationImpl::SNAP2_LOCKED)) { | |
6312 | CDentry *pdn = targeti->get_projected_parent_dn(); | |
6313 | if (!pdn) { | |
6314 | dout(7) << "target has no parent dn, failing..." << dendl; | |
6315 | respond_to_request(mdr, -EINVAL); | |
6316 | return; | |
6317 | } | |
6318 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr, 1)) | |
6319 | return; | |
6320 | mdr->locking_state |= MutationImpl::SNAP2_LOCKED; | |
6321 | } | |
6322 | ||
6323 | destdn = rdlock_path_xlock_dentry(mdr, false); | |
6324 | if (!destdn) | |
6325 | return; | |
6326 | ||
6327 | } else { | |
6328 | auto ret = rdlock_two_paths_xlock_destdn(mdr, false); | |
6329 | destdn = ret.first; | |
6330 | if (!destdn) | |
6331 | return; | |
6332 | ||
6333 | if (!destdn->get_projected_linkage()->is_null()) { | |
6334 | respond_to_request(mdr, -EEXIST); | |
6335 | return; | |
6336 | } | |
6337 | ||
6338 | targeti = ret.second->get_projected_linkage()->get_inode(); | |
6339 | } | |
6340 | ||
6341 | if (targeti->is_dir()) { | |
6342 | dout(7) << "target is a dir, failing..." << dendl; | |
6343 | respond_to_request(mdr, -EINVAL); | |
7c673cae FG |
6344 | return; |
6345 | } | |
6346 | ||
9f95a23c TL |
6347 | CDir *dir = destdn->get_dir(); |
6348 | dout(7) << "handle_client_link link " << destdn->get_name() << " in " << *dir << dendl; | |
7c673cae | 6349 | dout(7) << "target is " << *targeti << dendl; |
9f95a23c TL |
6350 | |
6351 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { | |
6352 | MutationImpl::LockOpVec lov; | |
6353 | lov.add_xlock(&targeti->snaplock); | |
6354 | lov.add_xlock(&targeti->linklock); | |
6355 | ||
6356 | if (!mds->locker->acquire_locks(mdr, lov)) | |
181888fb | 6357 | return; |
7c673cae | 6358 | |
9f95a23c TL |
6359 | mdr->locking_state |= MutationImpl::ALL_LOCKED; |
6360 | } | |
7c673cae | 6361 | |
9f95a23c TL |
6362 | if (targeti->get_projected_inode()->nlink == 0) { |
6363 | dout(7) << "target has no link, failing..." << dendl; | |
6364 | respond_to_request(mdr, -ENOENT); | |
6365 | } | |
7c673cae FG |
6366 | |
6367 | if ((!mdr->has_more() || mdr->more()->witnessed.empty())) { | |
6368 | if (!check_access(mdr, targeti, MAY_WRITE)) | |
6369 | return; | |
6370 | ||
6371 | if (!check_access(mdr, dir->get_inode(), MAY_WRITE)) | |
6372 | return; | |
6373 | ||
6374 | if (!check_fragment_space(mdr, dir)) | |
6375 | return; | |
6376 | } | |
6377 | ||
adb31ebb TL |
6378 | CInode* target_pin = targeti->get_projected_parent_dir()->inode; |
6379 | SnapRealm *target_realm = target_pin->find_snaprealm(); | |
6380 | if (target_pin != dir->inode && | |
6381 | target_realm->get_subvolume_ino() != | |
6382 | dir->inode->find_snaprealm()->get_subvolume_ino()) { | |
6383 | dout(7) << "target is in different subvolume, failing..." << dendl; | |
6384 | respond_to_request(mdr, -EXDEV); | |
6385 | return; | |
6386 | } | |
6387 | ||
7c673cae | 6388 | // go! |
11fdf7f2 | 6389 | ceph_assert(g_conf()->mds_kill_link_at != 1); |
7c673cae FG |
6390 | |
6391 | // local or remote? | |
6392 | if (targeti->is_auth()) | |
adb31ebb | 6393 | _link_local(mdr, destdn, targeti, target_realm); |
7c673cae | 6394 | else |
9f95a23c | 6395 | _link_remote(mdr, true, destdn, targeti); |
92f5a8d4 | 6396 | mds->balancer->maybe_fragment(dir, false); |
7c673cae FG |
6397 | } |
6398 | ||
6399 | ||
6400 | class C_MDS_link_local_finish : public ServerLogContext { | |
6401 | CDentry *dn; | |
6402 | CInode *targeti; | |
6403 | version_t dnpv; | |
6404 | version_t tipv; | |
11fdf7f2 | 6405 | bool adjust_realm; |
7c673cae FG |
6406 | public: |
6407 | C_MDS_link_local_finish(Server *s, MDRequestRef& r, CDentry *d, CInode *ti, | |
11fdf7f2 | 6408 | version_t dnpv_, version_t tipv_, bool ar) : |
7c673cae | 6409 | ServerLogContext(s, r), dn(d), targeti(ti), |
11fdf7f2 | 6410 | dnpv(dnpv_), tipv(tipv_), adjust_realm(ar) { } |
7c673cae | 6411 | void finish(int r) override { |
11fdf7f2 TL |
6412 | ceph_assert(r == 0); |
6413 | server->_link_local_finish(mdr, dn, targeti, dnpv, tipv, adjust_realm); | |
7c673cae FG |
6414 | } |
6415 | }; | |
6416 | ||
6417 | ||
adb31ebb | 6418 | void Server::_link_local(MDRequestRef& mdr, CDentry *dn, CInode *targeti, SnapRealm *target_realm) |
7c673cae FG |
6419 | { |
6420 | dout(10) << "_link_local " << *dn << " to " << *targeti << dendl; | |
6421 | ||
6422 | mdr->ls = mdlog->get_current_segment(); | |
6423 | ||
6424 | // predirty NEW dentry | |
6425 | version_t dnpv = dn->pre_dirty(); | |
6426 | version_t tipv = targeti->pre_dirty(); | |
6427 | ||
6428 | // project inode update | |
94b18763 FG |
6429 | auto &pi = targeti->project_inode(); |
6430 | pi.inode.nlink++; | |
91327a77 AA |
6431 | pi.inode.ctime = mdr->get_op_stamp(); |
6432 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
6433 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 FG |
6434 | pi.inode.change_attr++; |
6435 | pi.inode.version = tipv; | |
7c673cae | 6436 | |
11fdf7f2 | 6437 | bool adjust_realm = false; |
adb31ebb | 6438 | if (!target_realm->get_subvolume_ino() && !targeti->is_projected_snaprealm_global()) { |
11fdf7f2 TL |
6439 | sr_t *newsnap = targeti->project_snaprealm(); |
6440 | targeti->mark_snaprealm_global(newsnap); | |
adb31ebb | 6441 | targeti->record_snaprealm_parent_dentry(newsnap, target_realm, targeti->get_projected_parent_dn(), true); |
11fdf7f2 TL |
6442 | adjust_realm = true; |
6443 | } | |
6444 | ||
7c673cae FG |
6445 | // log + wait |
6446 | EUpdate *le = new EUpdate(mdlog, "link_local"); | |
6447 | mdlog->start_entry(le); | |
6448 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
6449 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, dn->get_dir(), PREDIRTY_DIR, 1); // new dn | |
6450 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, 0, PREDIRTY_PRIMARY); // targeti | |
6451 | le->metablob.add_remote_dentry(dn, true, targeti->ino(), targeti->d_type()); // new remote | |
6452 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, targeti); | |
6453 | ||
6454 | // do this after predirty_*, to avoid funky extra dnl arg | |
6455 | dn->push_projected_linkage(targeti->ino(), targeti->d_type()); | |
6456 | ||
11fdf7f2 TL |
6457 | journal_and_reply(mdr, targeti, dn, le, |
6458 | new C_MDS_link_local_finish(this, mdr, dn, targeti, dnpv, tipv, adjust_realm)); | |
7c673cae FG |
6459 | } |
6460 | ||
6461 | void Server::_link_local_finish(MDRequestRef& mdr, CDentry *dn, CInode *targeti, | |
11fdf7f2 | 6462 | version_t dnpv, version_t tipv, bool adjust_realm) |
7c673cae FG |
6463 | { |
6464 | dout(10) << "_link_local_finish " << *dn << " to " << *targeti << dendl; | |
6465 | ||
6466 | // link and unlock the NEW dentry | |
31f18b77 FG |
6467 | CDentry::linkage_t *dnl = dn->pop_projected_linkage(); |
6468 | if (!dnl->get_inode()) | |
6469 | dn->link_remote(dnl, targeti); | |
7c673cae FG |
6470 | dn->mark_dirty(dnpv, mdr->ls); |
6471 | ||
6472 | // target inode | |
6473 | targeti->pop_and_dirty_projected_inode(mdr->ls); | |
6474 | ||
6475 | mdr->apply(); | |
6476 | ||
6477 | MDRequestRef null_ref; | |
6478 | mdcache->send_dentry_link(dn, null_ref); | |
6479 | ||
11fdf7f2 TL |
6480 | if (adjust_realm) { |
6481 | int op = CEPH_SNAP_OP_SPLIT; | |
6482 | mds->mdcache->send_snap_update(targeti, 0, op); | |
6483 | mds->mdcache->do_realm_invalidate_and_update_notify(targeti, op); | |
6484 | } | |
6485 | ||
7c673cae | 6486 | // bump target popularity |
11fdf7f2 TL |
6487 | mds->balancer->hit_inode(targeti, META_POP_IWR); |
6488 | mds->balancer->hit_dir(dn->get_dir(), META_POP_IWR); | |
7c673cae FG |
6489 | |
6490 | // reply | |
6491 | respond_to_request(mdr, 0); | |
6492 | } | |
6493 | ||
6494 | ||
6495 | // link / unlink remote | |
6496 | ||
6497 | class C_MDS_link_remote_finish : public ServerLogContext { | |
6498 | bool inc; | |
6499 | CDentry *dn; | |
6500 | CInode *targeti; | |
6501 | version_t dpv; | |
6502 | public: | |
6503 | C_MDS_link_remote_finish(Server *s, MDRequestRef& r, bool i, CDentry *d, CInode *ti) : | |
6504 | ServerLogContext(s, r), inc(i), dn(d), targeti(ti), | |
6505 | dpv(d->get_projected_version()) {} | |
6506 | void finish(int r) override { | |
11fdf7f2 | 6507 | ceph_assert(r == 0); |
7c673cae FG |
6508 | server->_link_remote_finish(mdr, inc, dn, targeti, dpv); |
6509 | } | |
6510 | }; | |
6511 | ||
6512 | void Server::_link_remote(MDRequestRef& mdr, bool inc, CDentry *dn, CInode *targeti) | |
6513 | { | |
6514 | dout(10) << "_link_remote " | |
6515 | << (inc ? "link ":"unlink ") | |
6516 | << *dn << " to " << *targeti << dendl; | |
6517 | ||
6518 | // 1. send LinkPrepare to dest (journal nlink++ prepare) | |
6519 | mds_rank_t linkauth = targeti->authority().first; | |
6520 | if (mdr->more()->witnessed.count(linkauth) == 0) { | |
6521 | if (mds->is_cluster_degraded() && | |
6522 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(linkauth)) { | |
6523 | dout(10) << " targeti auth mds." << linkauth << " is not active" << dendl; | |
6524 | if (mdr->more()->waiting_on_slave.empty()) | |
6525 | mds->wait_for_active_peer(linkauth, new C_MDS_RetryRequest(mdcache, mdr)); | |
6526 | return; | |
6527 | } | |
6528 | ||
6529 | dout(10) << " targeti auth must prepare nlink++/--" << dendl; | |
6530 | int op; | |
6531 | if (inc) | |
6532 | op = MMDSSlaveRequest::OP_LINKPREP; | |
6533 | else | |
6534 | op = MMDSSlaveRequest::OP_UNLINKPREP; | |
9f95a23c | 6535 | auto req = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, op); |
7c673cae FG |
6536 | targeti->set_object_info(req->get_object_info()); |
6537 | req->op_stamp = mdr->get_op_stamp(); | |
11fdf7f2 TL |
6538 | if (auto& desti_srnode = mdr->more()->desti_srnode) |
6539 | encode(*desti_srnode, req->desti_snapbl); | |
7c673cae FG |
6540 | mds->send_message_mds(req, linkauth); |
6541 | ||
11fdf7f2 | 6542 | ceph_assert(mdr->more()->waiting_on_slave.count(linkauth) == 0); |
7c673cae FG |
6543 | mdr->more()->waiting_on_slave.insert(linkauth); |
6544 | return; | |
6545 | } | |
6546 | dout(10) << " targeti auth has prepared nlink++/--" << dendl; | |
6547 | ||
11fdf7f2 TL |
6548 | ceph_assert(g_conf()->mds_kill_link_at != 2); |
6549 | ||
6550 | if (auto& desti_srnode = mdr->more()->desti_srnode) { | |
6551 | delete desti_srnode; | |
6552 | desti_srnode = NULL; | |
6553 | } | |
7c673cae FG |
6554 | |
6555 | mdr->set_mds_stamp(ceph_clock_now()); | |
6556 | ||
6557 | // add to event | |
6558 | mdr->ls = mdlog->get_current_segment(); | |
6559 | EUpdate *le = new EUpdate(mdlog, inc ? "link_remote":"unlink_remote"); | |
6560 | mdlog->start_entry(le); | |
6561 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
6562 | if (!mdr->more()->witnessed.empty()) { | |
6563 | dout(20) << " noting uncommitted_slaves " << mdr->more()->witnessed << dendl; | |
6564 | le->reqid = mdr->reqid; | |
6565 | le->had_slaves = true; | |
6566 | mdcache->add_uncommitted_master(mdr->reqid, mdr->ls, mdr->more()->witnessed); | |
6567 | } | |
6568 | ||
6569 | if (inc) { | |
6570 | dn->pre_dirty(); | |
6571 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, dn->get_dir(), PREDIRTY_DIR, 1); | |
6572 | le->metablob.add_remote_dentry(dn, true, targeti->ino(), targeti->d_type()); // new remote | |
6573 | dn->push_projected_linkage(targeti->ino(), targeti->d_type()); | |
6574 | } else { | |
6575 | dn->pre_dirty(); | |
6576 | mdcache->predirty_journal_parents(mdr, &le->metablob, targeti, dn->get_dir(), PREDIRTY_DIR, -1); | |
6577 | mdcache->journal_cow_dentry(mdr.get(), &le->metablob, dn); | |
6578 | le->metablob.add_null_dentry(dn, true); | |
31f18b77 | 6579 | dn->push_projected_linkage(); |
7c673cae FG |
6580 | } |
6581 | ||
9f95a23c TL |
6582 | journal_and_reply(mdr, (inc ? targeti : nullptr), dn, le, |
6583 | new C_MDS_link_remote_finish(this, mdr, inc, dn, targeti)); | |
7c673cae FG |
6584 | } |
6585 | ||
6586 | void Server::_link_remote_finish(MDRequestRef& mdr, bool inc, | |
6587 | CDentry *dn, CInode *targeti, | |
6588 | version_t dpv) | |
6589 | { | |
6590 | dout(10) << "_link_remote_finish " | |
6591 | << (inc ? "link ":"unlink ") | |
6592 | << *dn << " to " << *targeti << dendl; | |
6593 | ||
11fdf7f2 | 6594 | ceph_assert(g_conf()->mds_kill_link_at != 3); |
7c673cae FG |
6595 | |
6596 | if (!mdr->more()->witnessed.empty()) | |
6597 | mdcache->logged_master_update(mdr->reqid); | |
6598 | ||
6599 | if (inc) { | |
6600 | // link the new dentry | |
31f18b77 FG |
6601 | CDentry::linkage_t *dnl = dn->pop_projected_linkage(); |
6602 | if (!dnl->get_inode()) | |
6603 | dn->link_remote(dnl, targeti); | |
7c673cae FG |
6604 | dn->mark_dirty(dpv, mdr->ls); |
6605 | } else { | |
6606 | // unlink main dentry | |
6607 | dn->get_dir()->unlink_inode(dn); | |
31f18b77 | 6608 | dn->pop_projected_linkage(); |
7c673cae FG |
6609 | dn->mark_dirty(dn->get_projected_version(), mdr->ls); // dirty old dentry |
6610 | } | |
6611 | ||
6612 | mdr->apply(); | |
6613 | ||
6614 | MDRequestRef null_ref; | |
6615 | if (inc) | |
6616 | mdcache->send_dentry_link(dn, null_ref); | |
6617 | else | |
6618 | mdcache->send_dentry_unlink(dn, NULL, null_ref); | |
6619 | ||
6620 | // bump target popularity | |
11fdf7f2 TL |
6621 | mds->balancer->hit_inode(targeti, META_POP_IWR); |
6622 | mds->balancer->hit_dir(dn->get_dir(), META_POP_IWR); | |
7c673cae FG |
6623 | |
6624 | // reply | |
6625 | respond_to_request(mdr, 0); | |
6626 | ||
6627 | if (!inc) | |
6628 | // removing a new dn? | |
6629 | dn->get_dir()->try_remove_unlinked_dn(dn); | |
6630 | } | |
6631 | ||
6632 | ||
6633 | // remote linking/unlinking | |
6634 | ||
6635 | class C_MDS_SlaveLinkPrep : public ServerLogContext { | |
6636 | CInode *targeti; | |
11fdf7f2 | 6637 | bool adjust_realm; |
7c673cae | 6638 | public: |
11fdf7f2 TL |
6639 | C_MDS_SlaveLinkPrep(Server *s, MDRequestRef& r, CInode *t, bool ar) : |
6640 | ServerLogContext(s, r), targeti(t), adjust_realm(ar) { } | |
7c673cae | 6641 | void finish(int r) override { |
11fdf7f2 TL |
6642 | ceph_assert(r == 0); |
6643 | server->_logged_slave_link(mdr, targeti, adjust_realm); | |
7c673cae FG |
6644 | } |
6645 | }; | |
6646 | ||
6647 | class C_MDS_SlaveLinkCommit : public ServerContext { | |
6648 | MDRequestRef mdr; | |
6649 | CInode *targeti; | |
6650 | public: | |
6651 | C_MDS_SlaveLinkCommit(Server *s, MDRequestRef& r, CInode *t) : | |
6652 | ServerContext(s), mdr(r), targeti(t) { } | |
6653 | void finish(int r) override { | |
6654 | server->_commit_slave_link(mdr, r, targeti); | |
6655 | } | |
6656 | }; | |
6657 | ||
7c673cae FG |
6658 | void Server::handle_slave_link_prep(MDRequestRef& mdr) |
6659 | { | |
6660 | dout(10) << "handle_slave_link_prep " << *mdr | |
6661 | << " on " << mdr->slave_request->get_object_info() | |
6662 | << dendl; | |
6663 | ||
11fdf7f2 | 6664 | ceph_assert(g_conf()->mds_kill_link_at != 4); |
7c673cae FG |
6665 | |
6666 | CInode *targeti = mdcache->get_inode(mdr->slave_request->get_object_info().ino); | |
11fdf7f2 | 6667 | ceph_assert(targeti); |
7c673cae FG |
6668 | dout(10) << "targeti " << *targeti << dendl; |
6669 | CDentry *dn = targeti->get_parent_dn(); | |
6670 | CDentry::linkage_t *dnl = dn->get_linkage(); | |
11fdf7f2 | 6671 | ceph_assert(dnl->is_primary()); |
7c673cae FG |
6672 | |
6673 | mdr->set_op_stamp(mdr->slave_request->op_stamp); | |
6674 | ||
6675 | mdr->auth_pin(targeti); | |
6676 | ||
6677 | //ceph_abort(); // test hack: make sure master can handle a slave that fails to prepare... | |
11fdf7f2 | 6678 | ceph_assert(g_conf()->mds_kill_link_at != 5); |
7c673cae FG |
6679 | |
6680 | // journal it | |
6681 | mdr->ls = mdlog->get_current_segment(); | |
6682 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_link_prep", mdr->reqid, mdr->slave_to_mds, | |
6683 | ESlaveUpdate::OP_PREPARE, ESlaveUpdate::LINK); | |
6684 | mdlog->start_entry(le); | |
6685 | ||
94b18763 | 6686 | auto &pi = dnl->get_inode()->project_inode(); |
7c673cae FG |
6687 | |
6688 | // update journaled target inode | |
6689 | bool inc; | |
11fdf7f2 TL |
6690 | bool adjust_realm = false; |
6691 | bool realm_projected = false; | |
7c673cae FG |
6692 | if (mdr->slave_request->get_op() == MMDSSlaveRequest::OP_LINKPREP) { |
6693 | inc = true; | |
94b18763 | 6694 | pi.inode.nlink++; |
adb31ebb TL |
6695 | |
6696 | CDentry *target_pdn = targeti->get_projected_parent_dn(); | |
6697 | SnapRealm *target_realm = target_pdn->get_dir()->inode->find_snaprealm(); | |
6698 | if (!target_realm->get_subvolume_ino() && !targeti->is_projected_snaprealm_global()) { | |
11fdf7f2 TL |
6699 | sr_t *newsnap = targeti->project_snaprealm(); |
6700 | targeti->mark_snaprealm_global(newsnap); | |
adb31ebb | 6701 | targeti->record_snaprealm_parent_dentry(newsnap, target_realm, target_pdn, true); |
11fdf7f2 TL |
6702 | adjust_realm = true; |
6703 | realm_projected = true; | |
6704 | } | |
7c673cae FG |
6705 | } else { |
6706 | inc = false; | |
94b18763 | 6707 | pi.inode.nlink--; |
11fdf7f2 TL |
6708 | if (targeti->is_projected_snaprealm_global()) { |
6709 | ceph_assert(mdr->slave_request->desti_snapbl.length()); | |
6710 | auto p = mdr->slave_request->desti_snapbl.cbegin(); | |
6711 | ||
6712 | sr_t *newsnap = targeti->project_snaprealm(); | |
6713 | decode(*newsnap, p); | |
6714 | ||
6715 | if (pi.inode.nlink == 0) | |
6716 | ceph_assert(!newsnap->is_parent_global()); | |
6717 | ||
6718 | realm_projected = true; | |
6719 | } else { | |
6720 | ceph_assert(mdr->slave_request->desti_snapbl.length() == 0); | |
6721 | } | |
7c673cae FG |
6722 | } |
6723 | ||
6724 | link_rollback rollback; | |
6725 | rollback.reqid = mdr->reqid; | |
6726 | rollback.ino = targeti->ino(); | |
6727 | rollback.old_ctime = targeti->inode.ctime; // we hold versionlock xlock; no concorrent projections | |
6728 | const fnode_t *pf = targeti->get_parent_dn()->get_dir()->get_projected_fnode(); | |
6729 | rollback.old_dir_mtime = pf->fragstat.mtime; | |
6730 | rollback.old_dir_rctime = pf->rstat.rctime; | |
6731 | rollback.was_inc = inc; | |
11fdf7f2 TL |
6732 | if (realm_projected) { |
6733 | if (targeti->snaprealm) { | |
6734 | encode(true, rollback.snapbl); | |
6735 | targeti->encode_snap_blob(rollback.snapbl); | |
6736 | } else { | |
6737 | encode(false, rollback.snapbl); | |
6738 | } | |
6739 | } | |
6740 | encode(rollback, le->rollback); | |
7c673cae FG |
6741 | mdr->more()->rollback_bl = le->rollback; |
6742 | ||
94b18763 FG |
6743 | pi.inode.ctime = mdr->get_op_stamp(); |
6744 | pi.inode.version = targeti->pre_dirty(); | |
7c673cae | 6745 | |
94b18763 | 6746 | dout(10) << " projected inode " << pi.inode.ino << " v " << pi.inode.version << dendl; |
7c673cae FG |
6747 | |
6748 | // commit case | |
6749 | mdcache->predirty_journal_parents(mdr, &le->commit, dnl->get_inode(), 0, PREDIRTY_SHALLOW|PREDIRTY_PRIMARY); | |
6750 | mdcache->journal_dirty_inode(mdr.get(), &le->commit, targeti); | |
e306af50 | 6751 | mdcache->add_uncommitted_slave(mdr->reqid, mdr->ls, mdr->slave_to_mds); |
7c673cae FG |
6752 | |
6753 | // set up commit waiter | |
6754 | mdr->more()->slave_commit = new C_MDS_SlaveLinkCommit(this, mdr, targeti); | |
6755 | ||
6756 | mdr->more()->slave_update_journaled = true; | |
11fdf7f2 | 6757 | submit_mdlog_entry(le, new C_MDS_SlaveLinkPrep(this, mdr, targeti, adjust_realm), |
7c673cae FG |
6758 | mdr, __func__); |
6759 | mdlog->flush(); | |
6760 | } | |
6761 | ||
11fdf7f2 | 6762 | void Server::_logged_slave_link(MDRequestRef& mdr, CInode *targeti, bool adjust_realm) |
7c673cae FG |
6763 | { |
6764 | dout(10) << "_logged_slave_link " << *mdr | |
6765 | << " " << *targeti << dendl; | |
6766 | ||
11fdf7f2 | 6767 | ceph_assert(g_conf()->mds_kill_link_at != 6); |
7c673cae FG |
6768 | |
6769 | // update the target | |
6770 | targeti->pop_and_dirty_projected_inode(mdr->ls); | |
6771 | mdr->apply(); | |
6772 | ||
6773 | // hit pop | |
11fdf7f2 | 6774 | mds->balancer->hit_inode(targeti, META_POP_IWR); |
7c673cae FG |
6775 | |
6776 | // done. | |
91327a77 | 6777 | mdr->reset_slave_request(); |
7c673cae | 6778 | |
11fdf7f2 TL |
6779 | if (adjust_realm) { |
6780 | int op = CEPH_SNAP_OP_SPLIT; | |
6781 | mds->mdcache->send_snap_update(targeti, 0, op); | |
6782 | mds->mdcache->do_realm_invalidate_and_update_notify(targeti, op); | |
6783 | } | |
6784 | ||
7c673cae FG |
6785 | // ack |
6786 | if (!mdr->aborted) { | |
9f95a23c | 6787 | auto reply = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_LINKPREPACK); |
7c673cae FG |
6788 | mds->send_message_mds(reply, mdr->slave_to_mds); |
6789 | } else { | |
6790 | dout(10) << " abort flag set, finishing" << dendl; | |
6791 | mdcache->request_finish(mdr); | |
6792 | } | |
6793 | } | |
6794 | ||
6795 | ||
6796 | struct C_MDS_CommittedSlave : public ServerLogContext { | |
6797 | C_MDS_CommittedSlave(Server *s, MDRequestRef& m) : ServerLogContext(s, m) {} | |
6798 | void finish(int r) override { | |
6799 | server->_committed_slave(mdr); | |
6800 | } | |
6801 | }; | |
6802 | ||
6803 | void Server::_commit_slave_link(MDRequestRef& mdr, int r, CInode *targeti) | |
6804 | { | |
6805 | dout(10) << "_commit_slave_link " << *mdr | |
6806 | << " r=" << r | |
6807 | << " " << *targeti << dendl; | |
6808 | ||
11fdf7f2 | 6809 | ceph_assert(g_conf()->mds_kill_link_at != 7); |
7c673cae FG |
6810 | |
6811 | if (r == 0) { | |
6812 | // drop our pins, etc. | |
6813 | mdr->cleanup(); | |
6814 | ||
6815 | // write a commit to the journal | |
6816 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_link_commit", mdr->reqid, mdr->slave_to_mds, | |
6817 | ESlaveUpdate::OP_COMMIT, ESlaveUpdate::LINK); | |
6818 | mdlog->start_entry(le); | |
6819 | submit_mdlog_entry(le, new C_MDS_CommittedSlave(this, mdr), mdr, __func__); | |
6820 | mdlog->flush(); | |
6821 | } else { | |
6822 | do_link_rollback(mdr->more()->rollback_bl, mdr->slave_to_mds, mdr); | |
6823 | } | |
6824 | } | |
6825 | ||
6826 | void Server::_committed_slave(MDRequestRef& mdr) | |
6827 | { | |
6828 | dout(10) << "_committed_slave " << *mdr << dendl; | |
6829 | ||
11fdf7f2 | 6830 | ceph_assert(g_conf()->mds_kill_link_at != 8); |
7c673cae | 6831 | |
e306af50 TL |
6832 | bool assert_exist = mdr->more()->slave_update_journaled; |
6833 | mdcache->finish_uncommitted_slave(mdr->reqid, assert_exist); | |
9f95a23c | 6834 | auto req = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_COMMITTED); |
7c673cae FG |
6835 | mds->send_message_mds(req, mdr->slave_to_mds); |
6836 | mdcache->request_finish(mdr); | |
6837 | } | |
6838 | ||
6839 | struct C_MDS_LoggedLinkRollback : public ServerLogContext { | |
6840 | MutationRef mut; | |
9f95a23c | 6841 | map<client_t,ref_t<MClientSnap>> splits; |
11fdf7f2 | 6842 | C_MDS_LoggedLinkRollback(Server *s, MutationRef& m, MDRequestRef& r, |
9f95a23c | 6843 | map<client_t,ref_t<MClientSnap>>&& _splits) : |
11fdf7f2 TL |
6844 | ServerLogContext(s, r), mut(m), splits(std::move(_splits)) { |
6845 | } | |
7c673cae | 6846 | void finish(int r) override { |
11fdf7f2 | 6847 | server->_link_rollback_finish(mut, mdr, splits); |
7c673cae FG |
6848 | } |
6849 | }; | |
6850 | ||
6851 | void Server::do_link_rollback(bufferlist &rbl, mds_rank_t master, MDRequestRef& mdr) | |
6852 | { | |
6853 | link_rollback rollback; | |
11fdf7f2 TL |
6854 | auto p = rbl.cbegin(); |
6855 | decode(rollback, p); | |
7c673cae FG |
6856 | |
6857 | dout(10) << "do_link_rollback on " << rollback.reqid | |
6858 | << (rollback.was_inc ? " inc":" dec") | |
6859 | << " ino " << rollback.ino | |
6860 | << dendl; | |
6861 | ||
11fdf7f2 | 6862 | ceph_assert(g_conf()->mds_kill_link_at != 9); |
7c673cae FG |
6863 | |
6864 | mdcache->add_rollback(rollback.reqid, master); // need to finish this update before resolve finishes | |
11fdf7f2 | 6865 | ceph_assert(mdr || mds->is_resolve()); |
7c673cae FG |
6866 | |
6867 | MutationRef mut(new MutationImpl(nullptr, utime_t(), rollback.reqid)); | |
6868 | mut->ls = mds->mdlog->get_current_segment(); | |
6869 | ||
6870 | CInode *in = mdcache->get_inode(rollback.ino); | |
11fdf7f2 | 6871 | ceph_assert(in); |
7c673cae | 6872 | dout(10) << " target is " << *in << dendl; |
11fdf7f2 | 6873 | ceph_assert(!in->is_projected()); // live slave request hold versionlock xlock. |
7c673cae | 6874 | |
94b18763 FG |
6875 | auto &pi = in->project_inode(); |
6876 | pi.inode.version = in->pre_dirty(); | |
7c673cae FG |
6877 | mut->add_projected_inode(in); |
6878 | ||
6879 | // parent dir rctime | |
6880 | CDir *parent = in->get_projected_parent_dn()->get_dir(); | |
6881 | fnode_t *pf = parent->project_fnode(); | |
6882 | mut->add_projected_fnode(parent); | |
6883 | pf->version = parent->pre_dirty(); | |
94b18763 | 6884 | if (pf->fragstat.mtime == pi.inode.ctime) { |
7c673cae | 6885 | pf->fragstat.mtime = rollback.old_dir_mtime; |
94b18763 | 6886 | if (pf->rstat.rctime == pi.inode.ctime) |
7c673cae FG |
6887 | pf->rstat.rctime = rollback.old_dir_rctime; |
6888 | mut->add_updated_lock(&parent->get_inode()->filelock); | |
6889 | mut->add_updated_lock(&parent->get_inode()->nestlock); | |
6890 | } | |
6891 | ||
6892 | // inode | |
91327a77 | 6893 | pi.inode.ctime = rollback.old_ctime; |
7c673cae | 6894 | if (rollback.was_inc) |
94b18763 | 6895 | pi.inode.nlink--; |
7c673cae | 6896 | else |
94b18763 | 6897 | pi.inode.nlink++; |
7c673cae | 6898 | |
9f95a23c | 6899 | map<client_t,ref_t<MClientSnap>> splits; |
11fdf7f2 TL |
6900 | if (rollback.snapbl.length() && in->snaprealm) { |
6901 | bool hadrealm; | |
6902 | auto p = rollback.snapbl.cbegin(); | |
6903 | decode(hadrealm, p); | |
6904 | if (hadrealm) { | |
6905 | if (!mds->is_resolve()) { | |
6906 | sr_t *new_srnode = new sr_t(); | |
6907 | decode(*new_srnode, p); | |
6908 | in->project_snaprealm(new_srnode); | |
6909 | } else { | |
6910 | decode(in->snaprealm->srnode, p); | |
6911 | } | |
6912 | } else { | |
6913 | SnapRealm *realm = parent->get_inode()->find_snaprealm(); | |
6914 | if (!mds->is_resolve()) | |
6915 | mdcache->prepare_realm_merge(in->snaprealm, realm, splits); | |
6916 | in->project_snaprealm(NULL); | |
6917 | } | |
6918 | } | |
6919 | ||
7c673cae FG |
6920 | // journal it |
6921 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_link_rollback", rollback.reqid, master, | |
6922 | ESlaveUpdate::OP_ROLLBACK, ESlaveUpdate::LINK); | |
6923 | mdlog->start_entry(le); | |
6924 | le->commit.add_dir_context(parent); | |
6925 | le->commit.add_dir(parent, true); | |
6926 | le->commit.add_primary_dentry(in->get_projected_parent_dn(), 0, true); | |
6927 | ||
11fdf7f2 | 6928 | submit_mdlog_entry(le, new C_MDS_LoggedLinkRollback(this, mut, mdr, std::move(splits)), |
7c673cae FG |
6929 | mdr, __func__); |
6930 | mdlog->flush(); | |
6931 | } | |
6932 | ||
11fdf7f2 | 6933 | void Server::_link_rollback_finish(MutationRef& mut, MDRequestRef& mdr, |
9f95a23c | 6934 | map<client_t,ref_t<MClientSnap>>& splits) |
7c673cae FG |
6935 | { |
6936 | dout(10) << "_link_rollback_finish" << dendl; | |
6937 | ||
11fdf7f2 | 6938 | ceph_assert(g_conf()->mds_kill_link_at != 10); |
7c673cae FG |
6939 | |
6940 | mut->apply(); | |
11fdf7f2 TL |
6941 | |
6942 | if (!mds->is_resolve()) | |
6943 | mdcache->send_snaps(splits); | |
6944 | ||
7c673cae FG |
6945 | if (mdr) |
6946 | mdcache->request_finish(mdr); | |
6947 | ||
e306af50 | 6948 | mdcache->finish_rollback(mut->reqid, mdr); |
7c673cae FG |
6949 | |
6950 | mut->cleanup(); | |
6951 | } | |
6952 | ||
6953 | ||
9f95a23c | 6954 | void Server::handle_slave_link_prep_ack(MDRequestRef& mdr, const cref_t<MMDSSlaveRequest> &m) |
7c673cae FG |
6955 | { |
6956 | dout(10) << "handle_slave_link_prep_ack " << *mdr | |
6957 | << " " << *m << dendl; | |
6958 | mds_rank_t from = mds_rank_t(m->get_source().num()); | |
6959 | ||
11fdf7f2 | 6960 | ceph_assert(g_conf()->mds_kill_link_at != 11); |
7c673cae FG |
6961 | |
6962 | // note slave | |
6963 | mdr->more()->slaves.insert(from); | |
6964 | ||
6965 | // witnessed! | |
11fdf7f2 | 6966 | ceph_assert(mdr->more()->witnessed.count(from) == 0); |
7c673cae | 6967 | mdr->more()->witnessed.insert(from); |
11fdf7f2 | 6968 | ceph_assert(!m->is_not_journaled()); |
7c673cae FG |
6969 | mdr->more()->has_journaled_slaves = true; |
6970 | ||
6971 | // remove from waiting list | |
11fdf7f2 | 6972 | ceph_assert(mdr->more()->waiting_on_slave.count(from)); |
7c673cae FG |
6973 | mdr->more()->waiting_on_slave.erase(from); |
6974 | ||
11fdf7f2 | 6975 | ceph_assert(mdr->more()->waiting_on_slave.empty()); |
7c673cae | 6976 | |
9f95a23c TL |
6977 | dispatch_client_request(mdr); // go again! |
6978 | } | |
7c673cae | 6979 | |
9f95a23c TL |
6980 | |
6981 | ||
6982 | ||
6983 | ||
6984 | // UNLINK | |
6985 | ||
6986 | void Server::handle_client_unlink(MDRequestRef& mdr) | |
6987 | { | |
6988 | const cref_t<MClientRequest> &req = mdr->client_request; | |
6989 | client_t client = mdr->get_client(); | |
6990 | ||
6991 | // rmdir or unlink? | |
6992 | bool rmdir = (req->get_op() == CEPH_MDS_OP_RMDIR); | |
6993 | ||
6994 | if (rmdir) | |
6995 | mdr->disable_lock_cache(); | |
6996 | CDentry *dn = rdlock_path_xlock_dentry(mdr, false, true); | |
6997 | if (!dn) | |
6998 | return; | |
7c673cae FG |
6999 | |
7000 | CDentry::linkage_t *dnl = dn->get_linkage(client, mdr); | |
11fdf7f2 | 7001 | ceph_assert(!dnl->is_null()); |
9f95a23c | 7002 | CInode *in = dnl->get_inode(); |
7c673cae FG |
7003 | |
7004 | if (rmdir) { | |
7005 | dout(7) << "handle_client_rmdir on " << *dn << dendl; | |
7006 | } else { | |
7007 | dout(7) << "handle_client_unlink on " << *dn << dendl; | |
7008 | } | |
7009 | dout(7) << "dn links to " << *in << dendl; | |
7010 | ||
7011 | // rmdir vs is_dir | |
7012 | if (in->is_dir()) { | |
7013 | if (rmdir) { | |
7014 | // do empty directory checks | |
7015 | if (_dir_is_nonempty_unlocked(mdr, in)) { | |
7016 | respond_to_request(mdr, -ENOTEMPTY); | |
7017 | return; | |
7018 | } | |
7019 | } else { | |
7020 | dout(7) << "handle_client_unlink on dir " << *in << ", returning error" << dendl; | |
7021 | respond_to_request(mdr, -EISDIR); | |
7022 | return; | |
7023 | } | |
7024 | } else { | |
7025 | if (rmdir) { | |
7026 | // unlink | |
7027 | dout(7) << "handle_client_rmdir on non-dir " << *in << ", returning error" << dendl; | |
7028 | respond_to_request(mdr, -ENOTDIR); | |
7029 | return; | |
7030 | } | |
7031 | } | |
7032 | ||
9f95a23c TL |
7033 | CInode *diri = dn->get_dir()->get_inode(); |
7034 | if ((!mdr->has_more() || mdr->more()->witnessed.empty())) { | |
7035 | if (!check_access(mdr, diri, MAY_WRITE)) | |
7036 | return; | |
7037 | } | |
7038 | ||
7c673cae FG |
7039 | // -- create stray dentry? -- |
7040 | CDentry *straydn = NULL; | |
7041 | if (dnl->is_primary()) { | |
7042 | straydn = prepare_stray_dentry(mdr, dnl->get_inode()); | |
7043 | if (!straydn) | |
7044 | return; | |
7045 | dout(10) << " straydn is " << *straydn << dendl; | |
7046 | } else if (mdr->straydn) { | |
7047 | mdr->unpin(mdr->straydn); | |
7048 | mdr->straydn = NULL; | |
7049 | } | |
7050 | ||
7051 | // lock | |
9f95a23c TL |
7052 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
7053 | MutationImpl::LockOpVec lov; | |
11fdf7f2 | 7054 | |
9f95a23c TL |
7055 | lov.add_xlock(&in->linklock); |
7056 | lov.add_xlock(&in->snaplock); | |
7057 | if (in->is_dir()) | |
7058 | lov.add_rdlock(&in->filelock); // to verify it's empty | |
7059 | ||
7060 | if (straydn) { | |
7061 | lov.add_wrlock(&straydn->get_dir()->inode->filelock); | |
7062 | lov.add_wrlock(&straydn->get_dir()->inode->nestlock); | |
7063 | lov.add_xlock(&straydn->lock); | |
7064 | } | |
11fdf7f2 | 7065 | |
9f95a23c TL |
7066 | if (!mds->locker->acquire_locks(mdr, lov)) |
7067 | return; | |
7c673cae | 7068 | |
9f95a23c TL |
7069 | mdr->locking_state |= MutationImpl::ALL_LOCKED; |
7070 | } | |
7c673cae FG |
7071 | |
7072 | if (in->is_dir() && | |
7073 | _dir_is_nonempty(mdr, in)) { | |
7074 | respond_to_request(mdr, -ENOTEMPTY); | |
7075 | return; | |
7076 | } | |
7077 | ||
11fdf7f2 TL |
7078 | if (straydn) |
7079 | straydn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7080 | ||
7081 | if (!mdr->more()->desti_srnode) { | |
7082 | if (in->is_projected_snaprealm_global()) { | |
7083 | sr_t *new_srnode = in->prepare_new_srnode(0); | |
adb31ebb | 7084 | in->record_snaprealm_parent_dentry(new_srnode, nullptr, dn, dnl->is_primary()); |
11fdf7f2 TL |
7085 | // dropping the last linkage or dropping the last remote linkage, |
7086 | // detch the inode from global snaprealm | |
7087 | auto nlink = in->get_projected_inode()->nlink; | |
7088 | if (nlink == 1 || | |
7089 | (nlink == 2 && !dnl->is_primary() && | |
7090 | !in->get_projected_parent_dir()->inode->is_stray())) | |
7091 | in->clear_snaprealm_global(new_srnode); | |
7092 | mdr->more()->desti_srnode = new_srnode; | |
7093 | } else if (dnl->is_primary()) { | |
7094 | // prepare snaprealm blob for slave request | |
7095 | SnapRealm *realm = in->find_snaprealm(); | |
7096 | snapid_t follows = realm->get_newest_seq(); | |
7097 | if (in->snaprealm || follows + 1 > in->get_oldest_snap()) { | |
7098 | sr_t *new_srnode = in->prepare_new_srnode(follows); | |
7099 | in->record_snaprealm_past_parent(new_srnode, straydn->get_dir()->inode->find_snaprealm()); | |
7100 | mdr->more()->desti_srnode = new_srnode; | |
7101 | } | |
7102 | } | |
7103 | } | |
7104 | ||
7c673cae FG |
7105 | // yay! |
7106 | if (in->is_dir() && in->has_subtree_root_dirfrag()) { | |
7107 | // subtree root auths need to be witnesses | |
7108 | set<mds_rank_t> witnesses; | |
7109 | in->list_replicas(witnesses); | |
7110 | dout(10) << " witnesses " << witnesses << ", have " << mdr->more()->witnessed << dendl; | |
7111 | ||
7112 | for (set<mds_rank_t>::iterator p = witnesses.begin(); | |
7113 | p != witnesses.end(); | |
7114 | ++p) { | |
7115 | if (mdr->more()->witnessed.count(*p)) { | |
7116 | dout(10) << " already witnessed by mds." << *p << dendl; | |
7117 | } else if (mdr->more()->waiting_on_slave.count(*p)) { | |
7118 | dout(10) << " already waiting on witness mds." << *p << dendl; | |
7119 | } else { | |
9f95a23c | 7120 | if (!_rmdir_prepare_witness(mdr, *p, mdr->dn[0], straydn)) |
7c673cae FG |
7121 | return; |
7122 | } | |
7123 | } | |
7124 | if (!mdr->more()->waiting_on_slave.empty()) | |
7125 | return; // we're waiting for a witness. | |
7126 | } | |
7127 | ||
9f95a23c TL |
7128 | if (!rmdir && dnl->is_primary() && mdr->dn[0].size() == 1) |
7129 | mds->locker->create_lock_cache(mdr, diri); | |
7130 | ||
7c673cae FG |
7131 | // ok! |
7132 | if (dnl->is_remote() && !dnl->get_inode()->is_auth()) | |
7133 | _link_remote(mdr, false, dn, dnl->get_inode()); | |
7134 | else | |
7135 | _unlink_local(mdr, dn, straydn); | |
7136 | } | |
7137 | ||
7138 | class C_MDS_unlink_local_finish : public ServerLogContext { | |
7139 | CDentry *dn; | |
7140 | CDentry *straydn; | |
7141 | version_t dnpv; // deleted dentry | |
7142 | public: | |
7143 | C_MDS_unlink_local_finish(Server *s, MDRequestRef& r, CDentry *d, CDentry *sd) : | |
7144 | ServerLogContext(s, r), dn(d), straydn(sd), | |
7145 | dnpv(d->get_projected_version()) {} | |
7146 | void finish(int r) override { | |
11fdf7f2 | 7147 | ceph_assert(r == 0); |
7c673cae FG |
7148 | server->_unlink_local_finish(mdr, dn, straydn, dnpv); |
7149 | } | |
7150 | }; | |
7151 | ||
7152 | void Server::_unlink_local(MDRequestRef& mdr, CDentry *dn, CDentry *straydn) | |
7153 | { | |
7154 | dout(10) << "_unlink_local " << *dn << dendl; | |
7155 | ||
7156 | CDentry::linkage_t *dnl = dn->get_projected_linkage(); | |
7157 | CInode *in = dnl->get_inode(); | |
7158 | ||
7c673cae FG |
7159 | |
7160 | // ok, let's do it. | |
7161 | mdr->ls = mdlog->get_current_segment(); | |
7162 | ||
7163 | // prepare log entry | |
7164 | EUpdate *le = new EUpdate(mdlog, "unlink_local"); | |
7165 | mdlog->start_entry(le); | |
7166 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
7167 | if (!mdr->more()->witnessed.empty()) { | |
7168 | dout(20) << " noting uncommitted_slaves " << mdr->more()->witnessed << dendl; | |
7169 | le->reqid = mdr->reqid; | |
7170 | le->had_slaves = true; | |
7171 | mdcache->add_uncommitted_master(mdr->reqid, mdr->ls, mdr->more()->witnessed); | |
7172 | } | |
7173 | ||
7174 | if (straydn) { | |
11fdf7f2 | 7175 | ceph_assert(dnl->is_primary()); |
7c673cae | 7176 | straydn->push_projected_linkage(in); |
7c673cae FG |
7177 | } |
7178 | ||
7179 | // the unlinked dentry | |
7180 | dn->pre_dirty(); | |
7181 | ||
94b18763 FG |
7182 | auto &pi = in->project_inode(); |
7183 | { | |
7184 | std::string t; | |
7185 | dn->make_path_string(t, true); | |
11fdf7f2 | 7186 | pi.inode.stray_prior_path = std::move(t); |
94b18763 | 7187 | } |
94b18763 | 7188 | pi.inode.version = in->pre_dirty(); |
91327a77 AA |
7189 | pi.inode.ctime = mdr->get_op_stamp(); |
7190 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
7191 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 FG |
7192 | pi.inode.change_attr++; |
7193 | pi.inode.nlink--; | |
7194 | if (pi.inode.nlink == 0) | |
7c673cae FG |
7195 | in->state_set(CInode::STATE_ORPHAN); |
7196 | ||
11fdf7f2 TL |
7197 | if (mdr->more()->desti_srnode) { |
7198 | auto& desti_srnode = mdr->more()->desti_srnode; | |
7199 | in->project_snaprealm(desti_srnode); | |
7200 | desti_srnode = NULL; | |
7201 | } | |
7202 | ||
7203 | if (straydn) { | |
7204 | // will manually pop projected inode | |
7205 | ||
7c673cae | 7206 | // primary link. add stray dentry. |
7c673cae FG |
7207 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, dn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, -1); |
7208 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, straydn->get_dir(), PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
7209 | ||
94b18763 | 7210 | pi.inode.update_backtrace(); |
7c673cae FG |
7211 | le->metablob.add_primary_dentry(straydn, in, true, true); |
7212 | } else { | |
11fdf7f2 | 7213 | mdr->add_projected_inode(in); |
7c673cae FG |
7214 | // remote link. update remote inode. |
7215 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, dn->get_dir(), PREDIRTY_DIR, -1); | |
7216 | mdcache->predirty_journal_parents(mdr, &le->metablob, in, 0, PREDIRTY_PRIMARY); | |
7217 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, in); | |
7218 | } | |
7219 | ||
7220 | mdcache->journal_cow_dentry(mdr.get(), &le->metablob, dn); | |
7221 | le->metablob.add_null_dentry(dn, true); | |
7222 | ||
7223 | if (in->is_dir()) { | |
7224 | dout(10) << " noting renamed (unlinked) dir ino " << in->ino() << " in metablob" << dendl; | |
7225 | le->metablob.renamed_dirino = in->ino(); | |
7226 | } | |
7227 | ||
7228 | dn->push_projected_linkage(); | |
7229 | ||
11fdf7f2 TL |
7230 | if (straydn) { |
7231 | ceph_assert(in->first <= straydn->first); | |
7232 | in->first = straydn->first; | |
7233 | } | |
7234 | ||
7c673cae | 7235 | if (in->is_dir()) { |
11fdf7f2 | 7236 | ceph_assert(straydn); |
7c673cae FG |
7237 | mdcache->project_subtree_rename(in, dn->get_dir(), straydn->get_dir()); |
7238 | } | |
7239 | ||
7240 | journal_and_reply(mdr, 0, dn, le, new C_MDS_unlink_local_finish(this, mdr, dn, straydn)); | |
7241 | } | |
7242 | ||
7243 | void Server::_unlink_local_finish(MDRequestRef& mdr, | |
7244 | CDentry *dn, CDentry *straydn, | |
7245 | version_t dnpv) | |
7246 | { | |
7247 | dout(10) << "_unlink_local_finish " << *dn << dendl; | |
7248 | ||
7249 | if (!mdr->more()->witnessed.empty()) | |
7250 | mdcache->logged_master_update(mdr->reqid); | |
7251 | ||
11fdf7f2 TL |
7252 | CInode *strayin = NULL; |
7253 | bool hadrealm = false; | |
7254 | if (straydn) { | |
7255 | // if there is newly created snaprealm, need to split old snaprealm's | |
7256 | // inodes_with_caps. So pop snaprealm before linkage changes. | |
7257 | strayin = dn->get_linkage()->get_inode(); | |
7258 | hadrealm = strayin->snaprealm ? true : false; | |
7259 | strayin->early_pop_projected_snaprealm(); | |
7260 | } | |
7261 | ||
7c673cae FG |
7262 | // unlink main dentry |
7263 | dn->get_dir()->unlink_inode(dn); | |
7264 | dn->pop_projected_linkage(); | |
7265 | ||
7266 | // relink as stray? (i.e. was primary link?) | |
7c673cae FG |
7267 | if (straydn) { |
7268 | dout(20) << " straydn is " << *straydn << dendl; | |
11fdf7f2 TL |
7269 | straydn->pop_projected_linkage(); |
7270 | ||
7271 | strayin->pop_and_dirty_projected_inode(mdr->ls); | |
7c673cae | 7272 | |
7c673cae FG |
7273 | mdcache->touch_dentry_bottom(straydn); |
7274 | } | |
7275 | ||
7276 | dn->mark_dirty(dnpv, mdr->ls); | |
7277 | mdr->apply(); | |
7c673cae FG |
7278 | |
7279 | mdcache->send_dentry_unlink(dn, straydn, mdr); | |
7280 | ||
11fdf7f2 TL |
7281 | if (straydn) { |
7282 | // update subtree map? | |
7283 | if (strayin->is_dir()) | |
7284 | mdcache->adjust_subtree_after_rename(strayin, dn->get_dir(), true); | |
7285 | ||
7286 | if (strayin->snaprealm && !hadrealm) | |
7287 | mdcache->do_realm_invalidate_and_update_notify(strayin, CEPH_SNAP_OP_SPLIT, false); | |
7288 | } | |
7c673cae FG |
7289 | |
7290 | // bump pop | |
11fdf7f2 | 7291 | mds->balancer->hit_dir(dn->get_dir(), META_POP_IWR); |
7c673cae FG |
7292 | |
7293 | // reply | |
7294 | respond_to_request(mdr, 0); | |
7295 | ||
7296 | // removing a new dn? | |
7297 | dn->get_dir()->try_remove_unlinked_dn(dn); | |
7298 | ||
7299 | // clean up ? | |
7300 | // respond_to_request() drops locks. So stray reintegration can race with us. | |
7301 | if (straydn && !straydn->get_projected_linkage()->is_null()) { | |
7302 | // Tip off the MDCache that this dentry is a stray that | |
7303 | // might be elegible for purge. | |
7304 | mdcache->notify_stray(straydn); | |
7305 | } | |
7306 | } | |
7307 | ||
7308 | bool Server::_rmdir_prepare_witness(MDRequestRef& mdr, mds_rank_t who, vector<CDentry*>& trace, CDentry *straydn) | |
7309 | { | |
7310 | if (mds->is_cluster_degraded() && | |
7311 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(who)) { | |
7312 | dout(10) << "_rmdir_prepare_witness mds." << who << " is not active" << dendl; | |
7313 | if (mdr->more()->waiting_on_slave.empty()) | |
7314 | mds->wait_for_active_peer(who, new C_MDS_RetryRequest(mdcache, mdr)); | |
7315 | return false; | |
7316 | } | |
7317 | ||
7318 | dout(10) << "_rmdir_prepare_witness mds." << who << dendl; | |
9f95a23c | 7319 | auto req = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_RMDIRPREP); |
7c673cae FG |
7320 | req->srcdnpath = filepath(trace.front()->get_dir()->ino()); |
7321 | for (auto dn : trace) | |
94b18763 | 7322 | req->srcdnpath.push_dentry(dn->get_name()); |
9f95a23c | 7323 | mdcache->encode_replica_stray(straydn, who, req->straybl); |
11fdf7f2 TL |
7324 | if (mdr->more()->desti_srnode) |
7325 | encode(*mdr->more()->desti_srnode, req->desti_snapbl); | |
7c673cae FG |
7326 | |
7327 | req->op_stamp = mdr->get_op_stamp(); | |
7328 | mds->send_message_mds(req, who); | |
7329 | ||
11fdf7f2 | 7330 | ceph_assert(mdr->more()->waiting_on_slave.count(who) == 0); |
7c673cae FG |
7331 | mdr->more()->waiting_on_slave.insert(who); |
7332 | return true; | |
7333 | } | |
7334 | ||
7335 | struct C_MDS_SlaveRmdirPrep : public ServerLogContext { | |
7336 | CDentry *dn, *straydn; | |
7337 | C_MDS_SlaveRmdirPrep(Server *s, MDRequestRef& r, CDentry *d, CDentry *st) | |
7338 | : ServerLogContext(s, r), dn(d), straydn(st) {} | |
7339 | void finish(int r) override { | |
7340 | server->_logged_slave_rmdir(mdr, dn, straydn); | |
7341 | } | |
7342 | }; | |
7343 | ||
7344 | struct C_MDS_SlaveRmdirCommit : public ServerContext { | |
7345 | MDRequestRef mdr; | |
31f18b77 FG |
7346 | CDentry *straydn; |
7347 | C_MDS_SlaveRmdirCommit(Server *s, MDRequestRef& r, CDentry *sd) | |
7348 | : ServerContext(s), mdr(r), straydn(sd) { } | |
7c673cae | 7349 | void finish(int r) override { |
31f18b77 | 7350 | server->_commit_slave_rmdir(mdr, r, straydn); |
7c673cae FG |
7351 | } |
7352 | }; | |
7353 | ||
7354 | void Server::handle_slave_rmdir_prep(MDRequestRef& mdr) | |
7355 | { | |
7356 | dout(10) << "handle_slave_rmdir_prep " << *mdr | |
7357 | << " " << mdr->slave_request->srcdnpath | |
7358 | << " to " << mdr->slave_request->destdnpath | |
7359 | << dendl; | |
7360 | ||
7361 | vector<CDentry*> trace; | |
7362 | filepath srcpath(mdr->slave_request->srcdnpath); | |
7363 | dout(10) << " src " << srcpath << dendl; | |
7364 | CInode *in; | |
9f95a23c TL |
7365 | CF_MDS_MDRContextFactory cf(mdcache, mdr, false); |
7366 | int r = mdcache->path_traverse(mdr, cf, srcpath, | |
7367 | MDS_TRAVERSE_DISCOVER | MDS_TRAVERSE_PATH_LOCKED, | |
7368 | &trace, &in); | |
7c673cae FG |
7369 | if (r > 0) return; |
7370 | if (r == -ESTALE) { | |
7371 | mdcache->find_ino_peers(srcpath.get_ino(), new C_MDS_RetryRequest(mdcache, mdr), | |
9f95a23c | 7372 | mdr->slave_to_mds, true); |
7c673cae FG |
7373 | return; |
7374 | } | |
11fdf7f2 | 7375 | ceph_assert(r == 0); |
91327a77 | 7376 | CDentry *dn = trace.back(); |
7c673cae FG |
7377 | dout(10) << " dn " << *dn << dendl; |
7378 | mdr->pin(dn); | |
7379 | ||
11fdf7f2 | 7380 | ceph_assert(mdr->straydn); |
7c673cae FG |
7381 | CDentry *straydn = mdr->straydn; |
7382 | dout(10) << " straydn " << *straydn << dendl; | |
7383 | ||
7384 | mdr->set_op_stamp(mdr->slave_request->op_stamp); | |
7385 | ||
7386 | rmdir_rollback rollback; | |
7387 | rollback.reqid = mdr->reqid; | |
7388 | rollback.src_dir = dn->get_dir()->dirfrag(); | |
11fdf7f2 | 7389 | rollback.src_dname = dn->get_name(); |
7c673cae | 7390 | rollback.dest_dir = straydn->get_dir()->dirfrag(); |
11fdf7f2 TL |
7391 | rollback.dest_dname = straydn->get_name(); |
7392 | if (mdr->slave_request->desti_snapbl.length()) { | |
7393 | if (in->snaprealm) { | |
7394 | encode(true, rollback.snapbl); | |
7395 | in->encode_snap_blob(rollback.snapbl); | |
7396 | } else { | |
7397 | encode(false, rollback.snapbl); | |
7398 | } | |
7399 | } | |
7400 | encode(rollback, mdr->more()->rollback_bl); | |
7401 | // FIXME: rollback snaprealm | |
7c673cae FG |
7402 | dout(20) << " rollback is " << mdr->more()->rollback_bl.length() << " bytes" << dendl; |
7403 | ||
7404 | // set up commit waiter | |
31f18b77 | 7405 | mdr->more()->slave_commit = new C_MDS_SlaveRmdirCommit(this, mdr, straydn); |
7c673cae | 7406 | |
11fdf7f2 TL |
7407 | straydn->push_projected_linkage(in); |
7408 | dn->push_projected_linkage(); | |
7c673cae | 7409 | |
11fdf7f2 TL |
7410 | ceph_assert(straydn->first >= in->first); |
7411 | in->first = straydn->first; | |
7c673cae | 7412 | |
11fdf7f2 TL |
7413 | if (!in->has_subtree_root_dirfrag(mds->get_nodeid())) { |
7414 | dout(10) << " no auth subtree in " << *in << ", skipping journal" << dendl; | |
7415 | _logged_slave_rmdir(mdr, dn, straydn); | |
7c673cae FG |
7416 | return; |
7417 | } | |
7418 | ||
e306af50 | 7419 | mdr->ls = mdlog->get_current_segment(); |
7c673cae FG |
7420 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_rmdir", mdr->reqid, mdr->slave_to_mds, |
7421 | ESlaveUpdate::OP_PREPARE, ESlaveUpdate::RMDIR); | |
7422 | mdlog->start_entry(le); | |
7423 | le->rollback = mdr->more()->rollback_bl; | |
7424 | ||
7425 | le->commit.add_dir_context(straydn->get_dir()); | |
7426 | le->commit.add_primary_dentry(straydn, in, true); | |
7427 | // slave: no need to journal original dentry | |
7428 | ||
7429 | dout(10) << " noting renamed (unlinked) dir ino " << in->ino() << " in metablob" << dendl; | |
7430 | le->commit.renamed_dirino = in->ino(); | |
7431 | ||
7432 | mdcache->project_subtree_rename(in, dn->get_dir(), straydn->get_dir()); | |
e306af50 | 7433 | mdcache->add_uncommitted_slave(mdr->reqid, mdr->ls, mdr->slave_to_mds); |
7c673cae FG |
7434 | |
7435 | mdr->more()->slave_update_journaled = true; | |
7436 | submit_mdlog_entry(le, new C_MDS_SlaveRmdirPrep(this, mdr, dn, straydn), | |
7437 | mdr, __func__); | |
7438 | mdlog->flush(); | |
7439 | } | |
7440 | ||
7441 | void Server::_logged_slave_rmdir(MDRequestRef& mdr, CDentry *dn, CDentry *straydn) | |
7442 | { | |
7443 | dout(10) << "_logged_slave_rmdir " << *mdr << " on " << *dn << dendl; | |
11fdf7f2 TL |
7444 | CInode *in = dn->get_linkage()->get_inode(); |
7445 | ||
7446 | bool new_realm; | |
7447 | if (mdr->slave_request->desti_snapbl.length()) { | |
7448 | new_realm = !in->snaprealm; | |
7449 | in->decode_snap_blob(mdr->slave_request->desti_snapbl); | |
7450 | ceph_assert(in->snaprealm); | |
7451 | ceph_assert(in->snaprealm->have_past_parents_open()); | |
7452 | } else { | |
7453 | new_realm = false; | |
7454 | } | |
7c673cae FG |
7455 | |
7456 | // update our cache now, so we are consistent with what is in the journal | |
7457 | // when we journal a subtree map | |
7c673cae FG |
7458 | dn->get_dir()->unlink_inode(dn); |
7459 | straydn->pop_projected_linkage(); | |
7460 | dn->pop_projected_linkage(); | |
11fdf7f2 TL |
7461 | |
7462 | mdcache->adjust_subtree_after_rename(in, dn->get_dir(), mdr->more()->slave_update_journaled); | |
7463 | ||
7464 | if (new_realm) | |
7465 | mdcache->do_realm_invalidate_and_update_notify(in, CEPH_SNAP_OP_SPLIT, false); | |
7c673cae FG |
7466 | |
7467 | // done. | |
91327a77 | 7468 | mdr->reset_slave_request(); |
7c673cae FG |
7469 | mdr->straydn = 0; |
7470 | ||
7471 | if (!mdr->aborted) { | |
9f95a23c | 7472 | auto reply = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_RMDIRPREPACK); |
11fdf7f2 TL |
7473 | if (!mdr->more()->slave_update_journaled) |
7474 | reply->mark_not_journaled(); | |
7c673cae FG |
7475 | mds->send_message_mds(reply, mdr->slave_to_mds); |
7476 | } else { | |
7477 | dout(10) << " abort flag set, finishing" << dendl; | |
7478 | mdcache->request_finish(mdr); | |
7479 | } | |
7480 | } | |
7481 | ||
9f95a23c | 7482 | void Server::handle_slave_rmdir_prep_ack(MDRequestRef& mdr, const cref_t<MMDSSlaveRequest> &ack) |
7c673cae FG |
7483 | { |
7484 | dout(10) << "handle_slave_rmdir_prep_ack " << *mdr | |
7485 | << " " << *ack << dendl; | |
7486 | ||
7487 | mds_rank_t from = mds_rank_t(ack->get_source().num()); | |
7488 | ||
7489 | mdr->more()->slaves.insert(from); | |
7490 | mdr->more()->witnessed.insert(from); | |
7491 | if (!ack->is_not_journaled()) | |
7492 | mdr->more()->has_journaled_slaves = true; | |
7493 | ||
7494 | // remove from waiting list | |
11fdf7f2 | 7495 | ceph_assert(mdr->more()->waiting_on_slave.count(from)); |
7c673cae FG |
7496 | mdr->more()->waiting_on_slave.erase(from); |
7497 | ||
7498 | if (mdr->more()->waiting_on_slave.empty()) | |
7499 | dispatch_client_request(mdr); // go again! | |
7500 | else | |
7501 | dout(10) << "still waiting on slaves " << mdr->more()->waiting_on_slave << dendl; | |
7502 | } | |
7503 | ||
31f18b77 | 7504 | void Server::_commit_slave_rmdir(MDRequestRef& mdr, int r, CDentry *straydn) |
7c673cae FG |
7505 | { |
7506 | dout(10) << "_commit_slave_rmdir " << *mdr << " r=" << r << dendl; | |
e306af50 | 7507 | |
7c673cae | 7508 | if (r == 0) { |
31f18b77 FG |
7509 | if (mdr->more()->slave_update_journaled) { |
7510 | CInode *strayin = straydn->get_projected_linkage()->get_inode(); | |
7511 | if (strayin && !strayin->snaprealm) | |
7512 | mdcache->clear_dirty_bits_for_stray(strayin); | |
7513 | } | |
7514 | ||
7c673cae FG |
7515 | mdr->cleanup(); |
7516 | ||
7517 | if (mdr->more()->slave_update_journaled) { | |
7518 | // write a commit to the journal | |
7519 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_rmdir_commit", mdr->reqid, | |
7520 | mdr->slave_to_mds, ESlaveUpdate::OP_COMMIT, | |
7521 | ESlaveUpdate::RMDIR); | |
7522 | mdlog->start_entry(le); | |
7523 | submit_mdlog_entry(le, new C_MDS_CommittedSlave(this, mdr), mdr, __func__); | |
7524 | mdlog->flush(); | |
7525 | } else { | |
7526 | _committed_slave(mdr); | |
7527 | } | |
7528 | } else { | |
7529 | // abort | |
7530 | do_rmdir_rollback(mdr->more()->rollback_bl, mdr->slave_to_mds, mdr); | |
7531 | } | |
7532 | } | |
7533 | ||
7534 | struct C_MDS_LoggedRmdirRollback : public ServerLogContext { | |
7535 | metareqid_t reqid; | |
7536 | CDentry *dn; | |
7537 | CDentry *straydn; | |
7538 | C_MDS_LoggedRmdirRollback(Server *s, MDRequestRef& m, metareqid_t mr, CDentry *d, CDentry *st) | |
7539 | : ServerLogContext(s, m), reqid(mr), dn(d), straydn(st) {} | |
7540 | void finish(int r) override { | |
7541 | server->_rmdir_rollback_finish(mdr, reqid, dn, straydn); | |
7542 | } | |
7543 | }; | |
7544 | ||
7545 | void Server::do_rmdir_rollback(bufferlist &rbl, mds_rank_t master, MDRequestRef& mdr) | |
7546 | { | |
7547 | // unlink the other rollback methods, the rmdir rollback is only | |
7548 | // needed to record the subtree changes in the journal for inode | |
7549 | // replicas who are auth for empty dirfrags. no actual changes to | |
7550 | // the file system are taking place here, so there is no Mutation. | |
7551 | ||
7552 | rmdir_rollback rollback; | |
11fdf7f2 TL |
7553 | auto p = rbl.cbegin(); |
7554 | decode(rollback, p); | |
7c673cae FG |
7555 | |
7556 | dout(10) << "do_rmdir_rollback on " << rollback.reqid << dendl; | |
7557 | mdcache->add_rollback(rollback.reqid, master); // need to finish this update before resolve finishes | |
11fdf7f2 | 7558 | ceph_assert(mdr || mds->is_resolve()); |
7c673cae FG |
7559 | |
7560 | CDir *dir = mdcache->get_dirfrag(rollback.src_dir); | |
7561 | if (!dir) | |
7562 | dir = mdcache->get_dirfrag(rollback.src_dir.ino, rollback.src_dname); | |
11fdf7f2 | 7563 | ceph_assert(dir); |
7c673cae | 7564 | CDentry *dn = dir->lookup(rollback.src_dname); |
11fdf7f2 | 7565 | ceph_assert(dn); |
7c673cae | 7566 | dout(10) << " dn " << *dn << dendl; |
11fdf7f2 TL |
7567 | CDir *straydir = mdcache->get_dirfrag(rollback.dest_dir); |
7568 | ceph_assert(straydir); | |
7569 | CDentry *straydn = straydir->lookup(rollback.dest_dname); | |
7570 | ceph_assert(straydn); | |
7571 | dout(10) << " straydn " << *straydn << dendl; | |
7c673cae FG |
7572 | CInode *in = straydn->get_linkage()->get_inode(); |
7573 | ||
11fdf7f2 TL |
7574 | dn->push_projected_linkage(in); |
7575 | straydn->push_projected_linkage(); | |
7c673cae | 7576 | |
11fdf7f2 TL |
7577 | if (rollback.snapbl.length() && in->snaprealm) { |
7578 | bool hadrealm; | |
7579 | auto p = rollback.snapbl.cbegin(); | |
7580 | decode(hadrealm, p); | |
7581 | if (hadrealm) { | |
7582 | decode(in->snaprealm->srnode, p); | |
7583 | } else { | |
7584 | in->snaprealm->merge_to(dir->get_inode()->find_snaprealm()); | |
7585 | } | |
7586 | } | |
7c673cae | 7587 | |
11fdf7f2 TL |
7588 | if (mdr && !mdr->more()->slave_update_journaled) { |
7589 | ceph_assert(!in->has_subtree_root_dirfrag(mds->get_nodeid())); | |
7c673cae | 7590 | |
11fdf7f2 | 7591 | _rmdir_rollback_finish(mdr, rollback.reqid, dn, straydn); |
7c673cae FG |
7592 | return; |
7593 | } | |
7594 | ||
7c673cae FG |
7595 | |
7596 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_rmdir_rollback", rollback.reqid, master, | |
7597 | ESlaveUpdate::OP_ROLLBACK, ESlaveUpdate::RMDIR); | |
7598 | mdlog->start_entry(le); | |
7599 | ||
7600 | le->commit.add_dir_context(dn->get_dir()); | |
7601 | le->commit.add_primary_dentry(dn, in, true); | |
7602 | // slave: no need to journal straydn | |
7603 | ||
7604 | dout(10) << " noting renamed (unlinked) dir ino " << in->ino() << " in metablob" << dendl; | |
7605 | le->commit.renamed_dirino = in->ino(); | |
7606 | ||
7607 | mdcache->project_subtree_rename(in, straydn->get_dir(), dn->get_dir()); | |
7608 | ||
7609 | submit_mdlog_entry(le, | |
7610 | new C_MDS_LoggedRmdirRollback(this, mdr,rollback.reqid, | |
7611 | dn, straydn), | |
7612 | mdr, __func__); | |
7613 | mdlog->flush(); | |
7614 | } | |
7615 | ||
7616 | void Server::_rmdir_rollback_finish(MDRequestRef& mdr, metareqid_t reqid, CDentry *dn, CDentry *straydn) | |
7617 | { | |
7618 | dout(10) << "_rmdir_rollback_finish " << reqid << dendl; | |
7619 | ||
7620 | straydn->get_dir()->unlink_inode(straydn); | |
7621 | dn->pop_projected_linkage(); | |
7622 | straydn->pop_projected_linkage(); | |
7623 | ||
7624 | CInode *in = dn->get_linkage()->get_inode(); | |
11fdf7f2 TL |
7625 | mdcache->adjust_subtree_after_rename(in, straydn->get_dir(), |
7626 | !mdr || mdr->more()->slave_update_journaled); | |
7627 | ||
7c673cae FG |
7628 | if (mds->is_resolve()) { |
7629 | CDir *root = mdcache->get_subtree_root(straydn->get_dir()); | |
7630 | mdcache->try_trim_non_auth_subtree(root); | |
7631 | } | |
7632 | ||
7633 | if (mdr) | |
7634 | mdcache->request_finish(mdr); | |
7635 | ||
e306af50 | 7636 | mdcache->finish_rollback(reqid, mdr); |
7c673cae FG |
7637 | } |
7638 | ||
7639 | ||
7640 | /** _dir_is_nonempty[_unlocked] | |
7641 | * | |
7642 | * check if a directory is non-empty (i.e. we can rmdir it). | |
7643 | * | |
7644 | * the unlocked varient this is a fastpath check. we can't really be | |
7645 | * sure until we rdlock the filelock. | |
7646 | */ | |
7647 | bool Server::_dir_is_nonempty_unlocked(MDRequestRef& mdr, CInode *in) | |
7648 | { | |
7649 | dout(10) << "dir_is_nonempty_unlocked " << *in << dendl; | |
11fdf7f2 | 7650 | ceph_assert(in->is_auth()); |
7c673cae | 7651 | |
9f95a23c TL |
7652 | if (in->filelock.is_cached()) |
7653 | return false; // there can be pending async create/unlink. don't know. | |
7c673cae FG |
7654 | if (in->snaprealm && in->snaprealm->srnode.snaps.size()) |
7655 | return true; // in a snapshot! | |
7656 | ||
9f95a23c TL |
7657 | auto&& ls = in->get_dirfrags(); |
7658 | for (const auto& dir : ls) { | |
7c673cae FG |
7659 | // is the frag obviously non-empty? |
7660 | if (dir->is_auth()) { | |
7661 | if (dir->get_projected_fnode()->fragstat.size()) { | |
7662 | dout(10) << "dir_is_nonempty_unlocked dirstat has " | |
7663 | << dir->get_projected_fnode()->fragstat.size() << " items " << *dir << dendl; | |
7664 | return true; | |
7665 | } | |
7666 | } | |
7667 | } | |
7668 | ||
7669 | return false; | |
7670 | } | |
7671 | ||
7672 | bool Server::_dir_is_nonempty(MDRequestRef& mdr, CInode *in) | |
7673 | { | |
7674 | dout(10) << "dir_is_nonempty " << *in << dendl; | |
11fdf7f2 TL |
7675 | ceph_assert(in->is_auth()); |
7676 | ceph_assert(in->filelock.can_read(mdr->get_client())); | |
7c673cae FG |
7677 | |
7678 | frag_info_t dirstat; | |
7679 | version_t dirstat_version = in->get_projected_inode()->dirstat.version; | |
7680 | ||
9f95a23c TL |
7681 | auto&& ls = in->get_dirfrags(); |
7682 | for (const auto& dir : ls) { | |
7c673cae FG |
7683 | const fnode_t *pf = dir->get_projected_fnode(); |
7684 | if (pf->fragstat.size()) { | |
7685 | dout(10) << "dir_is_nonempty dirstat has " | |
7686 | << pf->fragstat.size() << " items " << *dir << dendl; | |
7687 | return true; | |
7688 | } | |
7689 | ||
7690 | if (pf->accounted_fragstat.version == dirstat_version) | |
7691 | dirstat.add(pf->accounted_fragstat); | |
7692 | else | |
7693 | dirstat.add(pf->fragstat); | |
7694 | } | |
7695 | ||
7696 | return dirstat.size() != in->get_projected_inode()->dirstat.size(); | |
7697 | } | |
7698 | ||
7699 | ||
7700 | // ====================================================== | |
7701 | ||
7702 | ||
7703 | class C_MDS_rename_finish : public ServerLogContext { | |
7704 | CDentry *srcdn; | |
7705 | CDentry *destdn; | |
7706 | CDentry *straydn; | |
7707 | public: | |
7708 | C_MDS_rename_finish(Server *s, MDRequestRef& r, | |
7709 | CDentry *sdn, CDentry *ddn, CDentry *stdn) : | |
7710 | ServerLogContext(s, r), | |
7711 | srcdn(sdn), destdn(ddn), straydn(stdn) { } | |
7712 | void finish(int r) override { | |
11fdf7f2 | 7713 | ceph_assert(r == 0); |
7c673cae FG |
7714 | server->_rename_finish(mdr, srcdn, destdn, straydn); |
7715 | } | |
7716 | }; | |
7717 | ||
7718 | ||
7719 | /** handle_client_rename | |
7720 | * | |
7721 | * rename master is the destdn auth. this is because cached inodes | |
7722 | * must remain connected. thus, any replica of srci, must also | |
7723 | * replicate destdn, and possibly straydn, so that srci (and | |
7724 | * destdn->inode) remain connected during the rename. | |
7725 | * | |
7726 | * to do this, we freeze srci, then master (destdn auth) verifies that | |
7727 | * all other nodes have also replciated destdn and straydn. note that | |
7728 | * destdn replicas need not also replicate srci. this only works when | |
7729 | * destdn is master. | |
7730 | * | |
7731 | * This function takes responsibility for the passed mdr. | |
7732 | */ | |
7733 | void Server::handle_client_rename(MDRequestRef& mdr) | |
7734 | { | |
9f95a23c | 7735 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
7736 | dout(7) << "handle_client_rename " << *req << dendl; |
7737 | ||
7738 | filepath destpath = req->get_filepath(); | |
7739 | filepath srcpath = req->get_filepath2(); | |
91327a77 AA |
7740 | if (srcpath.is_last_dot_or_dotdot() || destpath.is_last_dot_or_dotdot()) { |
7741 | respond_to_request(mdr, -EBUSY); | |
7742 | return; | |
7743 | } | |
7744 | ||
9f95a23c TL |
7745 | auto [destdn, srcdn] = rdlock_two_paths_xlock_destdn(mdr, true); |
7746 | if (!destdn) | |
7747 | return; | |
7c673cae | 7748 | |
7c673cae | 7749 | dout(10) << " destdn " << *destdn << dendl; |
7c673cae | 7750 | CDir *destdir = destdn->get_dir(); |
11fdf7f2 | 7751 | ceph_assert(destdir->is_auth()); |
9f95a23c | 7752 | CDentry::linkage_t *destdnl = destdn->get_projected_linkage(); |
7c673cae | 7753 | |
7c673cae | 7754 | dout(10) << " srcdn " << *srcdn << dendl; |
11fdf7f2 | 7755 | CDir *srcdir = srcdn->get_dir(); |
7c673cae FG |
7756 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); |
7757 | CInode *srci = srcdnl->get_inode(); | |
7758 | dout(10) << " srci " << *srci << dendl; | |
7759 | ||
9f95a23c TL |
7760 | // -- some sanity checks -- |
7761 | if (destdn == srcdn) { | |
7762 | dout(7) << "rename src=dest, noop" << dendl; | |
7763 | respond_to_request(mdr, 0); | |
7764 | return; | |
7765 | } | |
7766 | ||
7767 | // dest a child of src? | |
7768 | // e.g. mv /usr /usr/foo | |
7769 | if (srci->is_dir() && srci->is_projected_ancestor_of(destdir->get_inode())) { | |
7770 | dout(7) << "cannot rename item to be a child of itself" << dendl; | |
7771 | respond_to_request(mdr, -EINVAL); | |
7772 | return; | |
7773 | } | |
7774 | ||
7775 | // is this a stray migration, reintegration or merge? (sanity checks!) | |
7776 | if (mdr->reqid.name.is_mds() && | |
7777 | !(MDS_INO_IS_STRAY(srcpath.get_ino()) && | |
7778 | MDS_INO_IS_STRAY(destpath.get_ino())) && | |
7779 | !(destdnl->is_remote() && | |
7780 | destdnl->get_remote_ino() == srci->ino())) { | |
7781 | respond_to_request(mdr, -EINVAL); // actually, this won't reply, but whatev. | |
7782 | return; | |
7783 | } | |
7784 | ||
7c673cae FG |
7785 | CInode *oldin = 0; |
7786 | if (!destdnl->is_null()) { | |
7787 | //dout(10) << "dest dn exists " << *destdn << dendl; | |
7788 | oldin = mdcache->get_dentry_inode(destdn, mdr, true); | |
7789 | if (!oldin) return; | |
7790 | dout(10) << " oldin " << *oldin << dendl; | |
7c673cae FG |
7791 | |
7792 | // non-empty dir? do trivial fast unlocked check, do another check later with read locks | |
7793 | if (oldin->is_dir() && _dir_is_nonempty_unlocked(mdr, oldin)) { | |
7794 | respond_to_request(mdr, -ENOTEMPTY); | |
7795 | return; | |
7796 | } | |
181888fb | 7797 | |
9f95a23c TL |
7798 | // mv /some/thing /to/some/existing_other_thing |
7799 | if (oldin->is_dir() && !srci->is_dir()) { | |
7800 | respond_to_request(mdr, -EISDIR); | |
7801 | return; | |
7802 | } | |
7803 | if (!oldin->is_dir() && srci->is_dir()) { | |
7804 | respond_to_request(mdr, -ENOTDIR); | |
7805 | return; | |
7806 | } | |
7807 | if (srci == oldin && !srcdir->inode->is_stray()) { | |
7808 | respond_to_request(mdr, 0); // no-op. POSIX makes no sense. | |
7809 | return; | |
7c673cae FG |
7810 | } |
7811 | } | |
7812 | ||
9f95a23c TL |
7813 | vector<CDentry*>& srctrace = mdr->dn[1]; |
7814 | vector<CDentry*>& desttrace = mdr->dn[0]; | |
7c673cae FG |
7815 | |
7816 | // src+dest traces _must_ share a common ancestor for locking to prevent orphans | |
7817 | if (destpath.get_ino() != srcpath.get_ino() && | |
7818 | !(req->get_source().is_mds() && | |
9f95a23c | 7819 | MDS_INO_IS_STRAY(srcpath.get_ino()))) { // <-- mds 'rename' out of stray dir is ok! |
7c673cae FG |
7820 | CInode *srcbase = srctrace[0]->get_dir()->get_inode(); |
7821 | CInode *destbase = desttrace[0]->get_dir()->get_inode(); | |
7822 | // ok, extend srctrace toward root until it is an ancestor of desttrace. | |
7823 | while (srcbase != destbase && | |
7824 | !srcbase->is_projected_ancestor_of(destbase)) { | |
7825 | CDentry *pdn = srcbase->get_projected_parent_dn(); | |
7826 | srctrace.insert(srctrace.begin(), pdn); | |
7827 | dout(10) << "rename prepending srctrace with " << *pdn << dendl; | |
7828 | srcbase = pdn->get_dir()->get_inode(); | |
7829 | } | |
7830 | ||
7831 | // then, extend destpath until it shares the same parent inode as srcpath. | |
7832 | while (destbase != srcbase) { | |
7833 | CDentry *pdn = destbase->get_projected_parent_dn(); | |
7834 | desttrace.insert(desttrace.begin(), pdn); | |
7c673cae FG |
7835 | dout(10) << "rename prepending desttrace with " << *pdn << dendl; |
7836 | destbase = pdn->get_dir()->get_inode(); | |
7837 | } | |
7838 | dout(10) << "rename src and dest traces now share common ancestor " << *destbase << dendl; | |
7839 | } | |
7840 | ||
7c673cae | 7841 | |
11fdf7f2 | 7842 | bool linkmerge = srcdnl->get_inode() == destdnl->get_inode(); |
7c673cae FG |
7843 | if (linkmerge) |
7844 | dout(10) << " this is a link merge" << dendl; | |
7845 | ||
7846 | // -- create stray dentry? -- | |
7847 | CDentry *straydn = NULL; | |
7848 | if (destdnl->is_primary() && !linkmerge) { | |
7849 | straydn = prepare_stray_dentry(mdr, destdnl->get_inode()); | |
7850 | if (!straydn) | |
7851 | return; | |
7852 | dout(10) << " straydn is " << *straydn << dendl; | |
7853 | } else if (mdr->straydn) { | |
7854 | mdr->unpin(mdr->straydn); | |
7855 | mdr->straydn = NULL; | |
7856 | } | |
7857 | ||
7c673cae FG |
7858 | |
7859 | // -- locks -- | |
9f95a23c TL |
7860 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
7861 | MutationImpl::LockOpVec lov; | |
7c673cae | 7862 | |
9f95a23c TL |
7863 | // we need to update srci's ctime. xlock its least contended lock to do that... |
7864 | lov.add_xlock(&srci->linklock); | |
7865 | lov.add_xlock(&srci->snaplock); | |
7c673cae | 7866 | |
9f95a23c TL |
7867 | if (oldin) { |
7868 | // xlock oldin (for nlink--) | |
7869 | lov.add_xlock(&oldin->linklock); | |
7870 | lov.add_xlock(&oldin->snaplock); | |
7871 | if (oldin->is_dir()) { | |
7872 | ceph_assert(srci->is_dir()); | |
11fdf7f2 | 7873 | lov.add_rdlock(&oldin->filelock); // to verify it's empty |
7c673cae | 7874 | |
9f95a23c TL |
7875 | // adjust locking order? |
7876 | int cmp = mdr->compare_paths(); | |
7877 | if (cmp < 0 || (cmp == 0 && oldin->ino() < srci->ino())) | |
7878 | std::reverse(lov.begin(), lov.end()); | |
7879 | } else { | |
7880 | ceph_assert(!srci->is_dir()); | |
7881 | // adjust locking order; | |
7882 | if (srci->ino() > oldin->ino()) | |
7883 | std::reverse(lov.begin(), lov.end()); | |
7884 | } | |
7885 | } | |
7886 | ||
7887 | // straydn? | |
7888 | if (straydn) { | |
7889 | lov.add_wrlock(&straydn->get_dir()->inode->filelock); | |
7890 | lov.add_wrlock(&straydn->get_dir()->inode->nestlock); | |
7891 | lov.add_xlock(&straydn->lock); | |
7892 | } | |
7893 | ||
7894 | CInode *auth_pin_freeze = !srcdn->is_auth() && srcdnl->is_primary() ? srci : nullptr; | |
7895 | if (!mds->locker->acquire_locks(mdr, lov, auth_pin_freeze)) | |
7896 | return; | |
7897 | ||
7898 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
7899 | } | |
7c673cae | 7900 | |
11fdf7f2 TL |
7901 | if (linkmerge) |
7902 | ceph_assert(srcdir->inode->is_stray() && srcdnl->is_primary() && destdnl->is_remote()); | |
7903 | ||
7c673cae | 7904 | if ((!mdr->has_more() || mdr->more()->witnessed.empty())) { |
11fdf7f2 | 7905 | if (!check_access(mdr, srcdir->get_inode(), MAY_WRITE)) |
7c673cae FG |
7906 | return; |
7907 | ||
7908 | if (!check_access(mdr, destdn->get_dir()->get_inode(), MAY_WRITE)) | |
7909 | return; | |
7910 | ||
7911 | if (!check_fragment_space(mdr, destdn->get_dir())) | |
7912 | return; | |
7913 | ||
7914 | if (!check_access(mdr, srci, MAY_WRITE)) | |
7915 | return; | |
7916 | } | |
7917 | ||
7918 | // with read lock, really verify oldin is empty | |
7919 | if (oldin && | |
7920 | oldin->is_dir() && | |
7921 | _dir_is_nonempty(mdr, oldin)) { | |
7922 | respond_to_request(mdr, -ENOTEMPTY); | |
7923 | return; | |
7924 | } | |
7925 | ||
11fdf7f2 | 7926 | /* project_snaprealm_past_parent() will do this job |
7c673cae FG |
7927 | * |
7928 | // moving between snaprealms? | |
7929 | if (srcdnl->is_primary() && srci->is_multiversion() && !srci->snaprealm) { | |
7930 | SnapRealm *srcrealm = srci->find_snaprealm(); | |
7931 | SnapRealm *destrealm = destdn->get_dir()->inode->find_snaprealm(); | |
7932 | if (srcrealm != destrealm && | |
7933 | (srcrealm->get_newest_seq() + 1 > srcdn->first || | |
7934 | destrealm->get_newest_seq() + 1 > srcdn->first)) { | |
7935 | dout(10) << " renaming between snaprealms, creating snaprealm for " << *srci << dendl; | |
7936 | mdcache->snaprealm_create(mdr, srci); | |
7937 | return; | |
7938 | } | |
7939 | } | |
7940 | */ | |
7941 | ||
adb31ebb TL |
7942 | SnapRealm *dest_realm = nullptr; |
7943 | SnapRealm *src_realm = nullptr; | |
7944 | if (!linkmerge) { | |
7945 | dest_realm = destdir->inode->find_snaprealm(); | |
7946 | if (srcdir->inode == destdir->inode) | |
7947 | src_realm = dest_realm; | |
7948 | else | |
7949 | src_realm = srcdir->inode->find_snaprealm(); | |
7950 | if (src_realm != dest_realm && | |
7951 | src_realm->get_subvolume_ino() != dest_realm->get_subvolume_ino()) { | |
7952 | respond_to_request(mdr, -EXDEV); | |
7953 | return; | |
7954 | } | |
7955 | } | |
7956 | ||
11fdf7f2 | 7957 | ceph_assert(g_conf()->mds_kill_rename_at != 1); |
7c673cae FG |
7958 | |
7959 | // -- open all srcdn inode frags, if any -- | |
7960 | // we need these open so that auth can properly delegate from inode to dirfrags | |
7961 | // after the inode is _ours_. | |
7962 | if (srcdnl->is_primary() && | |
7963 | !srcdn->is_auth() && | |
7964 | srci->is_dir()) { | |
7965 | dout(10) << "srci is remote dir, setting stickydirs and opening all frags" << dendl; | |
7966 | mdr->set_stickydirs(srci); | |
7967 | ||
11fdf7f2 TL |
7968 | frag_vec_t leaves; |
7969 | srci->dirfragtree.get_leaves(leaves); | |
7970 | for (const auto& leaf : leaves) { | |
7971 | CDir *dir = srci->get_dirfrag(leaf); | |
7c673cae | 7972 | if (!dir) { |
11fdf7f2 TL |
7973 | dout(10) << " opening " << leaf << " under " << *srci << dendl; |
7974 | mdcache->open_remote_dirfrag(srci, leaf, new C_MDS_RetryRequest(mdcache, mdr)); | |
7c673cae FG |
7975 | return; |
7976 | } | |
7977 | } | |
7978 | } | |
7979 | ||
11fdf7f2 TL |
7980 | // -- prepare snaprealm --- |
7981 | ||
7982 | if (linkmerge) { | |
7983 | if (!mdr->more()->srci_srnode && | |
7984 | srci->get_projected_inode()->nlink == 1 && | |
7985 | srci->is_projected_snaprealm_global()) { | |
7986 | sr_t *new_srnode = srci->prepare_new_srnode(0); | |
adb31ebb | 7987 | srci->record_snaprealm_parent_dentry(new_srnode, nullptr, destdn, false); |
11fdf7f2 TL |
7988 | |
7989 | srci->clear_snaprealm_global(new_srnode); | |
7990 | mdr->more()->srci_srnode = new_srnode; | |
7991 | } | |
7992 | } else { | |
7993 | if (oldin && !mdr->more()->desti_srnode) { | |
7994 | if (oldin->is_projected_snaprealm_global()) { | |
7995 | sr_t *new_srnode = oldin->prepare_new_srnode(0); | |
adb31ebb | 7996 | oldin->record_snaprealm_parent_dentry(new_srnode, dest_realm, destdn, destdnl->is_primary()); |
11fdf7f2 TL |
7997 | // dropping the last linkage or dropping the last remote linkage, |
7998 | // detch the inode from global snaprealm | |
7999 | auto nlink = oldin->get_projected_inode()->nlink; | |
8000 | if (nlink == 1 || | |
8001 | (nlink == 2 && !destdnl->is_primary() && | |
8002 | !oldin->get_projected_parent_dir()->inode->is_stray())) | |
8003 | oldin->clear_snaprealm_global(new_srnode); | |
8004 | mdr->more()->desti_srnode = new_srnode; | |
8005 | } else if (destdnl->is_primary()) { | |
11fdf7f2 TL |
8006 | snapid_t follows = dest_realm->get_newest_seq(); |
8007 | if (oldin->snaprealm || follows + 1 > oldin->get_oldest_snap()) { | |
8008 | sr_t *new_srnode = oldin->prepare_new_srnode(follows); | |
8009 | oldin->record_snaprealm_past_parent(new_srnode, straydn->get_dir()->inode->find_snaprealm()); | |
8010 | mdr->more()->desti_srnode = new_srnode; | |
8011 | } | |
8012 | } | |
8013 | } | |
8014 | if (!mdr->more()->srci_srnode) { | |
11fdf7f2 TL |
8015 | if (srci->is_projected_snaprealm_global()) { |
8016 | sr_t *new_srnode = srci->prepare_new_srnode(0); | |
adb31ebb | 8017 | srci->record_snaprealm_parent_dentry(new_srnode, src_realm, srcdn, srcdnl->is_primary()); |
11fdf7f2 TL |
8018 | mdr->more()->srci_srnode = new_srnode; |
8019 | } else if (srcdnl->is_primary()) { | |
11fdf7f2 TL |
8020 | snapid_t follows = src_realm->get_newest_seq(); |
8021 | if (src_realm != dest_realm && | |
8022 | (srci->snaprealm || follows + 1 > srci->get_oldest_snap())) { | |
8023 | sr_t *new_srnode = srci->prepare_new_srnode(follows); | |
8024 | srci->record_snaprealm_past_parent(new_srnode, dest_realm); | |
8025 | mdr->more()->srci_srnode = new_srnode; | |
8026 | } | |
8027 | } | |
8028 | } | |
8029 | } | |
8030 | ||
7c673cae FG |
8031 | // -- prepare witnesses -- |
8032 | ||
9f95a23c TL |
8033 | /* |
8034 | * NOTE: we use _all_ replicas as witnesses. | |
8035 | * this probably isn't totally necessary (esp for file renames), | |
8036 | * but if/when we change that, we have to make sure rejoin is | |
8037 | * sufficiently robust to handle strong rejoins from survivors | |
8038 | * with totally wrong dentry->inode linkage. | |
8039 | * (currently, it can ignore rename effects, because the resolve | |
8040 | * stage will sort them out.) | |
8041 | */ | |
8042 | set<mds_rank_t> witnesses = mdr->more()->extra_witnesses; | |
8043 | if (srcdn->is_auth()) | |
8044 | srcdn->list_replicas(witnesses); | |
8045 | else | |
8046 | witnesses.insert(srcdn->authority().first); | |
8047 | if (srcdnl->is_remote() && !srci->is_auth()) | |
8048 | witnesses.insert(srci->authority().first); | |
8049 | destdn->list_replicas(witnesses); | |
8050 | if (destdnl->is_remote() && !oldin->is_auth()) | |
8051 | witnesses.insert(oldin->authority().first); | |
8052 | dout(10) << " witnesses " << witnesses << ", have " << mdr->more()->witnessed << dendl; | |
8053 | ||
8054 | if (!witnesses.empty()) { | |
8055 | // Replicas can't see projected dentry linkages and will get confused. | |
8056 | // We have taken snaplocks on ancestor inodes. Later rename/rmdir requests | |
8057 | // can't project these inodes' linkages. | |
8058 | bool need_flush = false; | |
8059 | for (auto& dn : srctrace) { | |
8060 | if (dn->is_projected()) { | |
8061 | need_flush = true; | |
8062 | break; | |
8063 | } | |
8064 | } | |
8065 | if (!need_flush) { | |
8066 | CDentry *dn = destdn; | |
8067 | do { | |
8068 | if (dn->is_projected()) { | |
8069 | need_flush = true; | |
8070 | break; | |
8071 | } | |
8072 | CInode *diri = dn->get_dir()->get_inode(); | |
8073 | dn = diri->get_projected_parent_dn(); | |
8074 | } while (dn); | |
8075 | } | |
8076 | if (need_flush) { | |
8077 | mdlog->wait_for_safe( | |
8078 | new MDSInternalContextWrapper(mds, | |
8079 | new C_MDS_RetryRequest(mdcache, mdr))); | |
8080 | mdlog->flush(); | |
8081 | return; | |
8082 | } | |
8083 | } | |
8084 | ||
7c673cae FG |
8085 | // do srcdn auth last |
8086 | mds_rank_t last = MDS_RANK_NONE; | |
8087 | if (!srcdn->is_auth()) { | |
8088 | last = srcdn->authority().first; | |
8089 | mdr->more()->srcdn_auth_mds = last; | |
8090 | // ask auth of srci to mark srci as ambiguous auth if more than two MDS | |
8091 | // are involved in the rename operation. | |
8092 | if (srcdnl->is_primary() && !mdr->more()->is_ambiguous_auth) { | |
8093 | dout(10) << " preparing ambiguous auth for srci" << dendl; | |
11fdf7f2 TL |
8094 | ceph_assert(mdr->more()->is_remote_frozen_authpin); |
8095 | ceph_assert(mdr->more()->rename_inode == srci); | |
7c673cae FG |
8096 | _rename_prepare_witness(mdr, last, witnesses, srctrace, desttrace, straydn); |
8097 | return; | |
8098 | } | |
8099 | } | |
8100 | ||
8101 | for (set<mds_rank_t>::iterator p = witnesses.begin(); | |
8102 | p != witnesses.end(); | |
8103 | ++p) { | |
8104 | if (*p == last) continue; // do it last! | |
8105 | if (mdr->more()->witnessed.count(*p)) { | |
8106 | dout(10) << " already witnessed by mds." << *p << dendl; | |
8107 | } else if (mdr->more()->waiting_on_slave.count(*p)) { | |
8108 | dout(10) << " already waiting on witness mds." << *p << dendl; | |
8109 | } else { | |
8110 | if (!_rename_prepare_witness(mdr, *p, witnesses, srctrace, desttrace, straydn)) | |
8111 | return; | |
8112 | } | |
8113 | } | |
8114 | if (!mdr->more()->waiting_on_slave.empty()) | |
8115 | return; // we're waiting for a witness. | |
8116 | ||
8117 | if (last != MDS_RANK_NONE && mdr->more()->witnessed.count(last) == 0) { | |
8118 | dout(10) << " preparing last witness (srcdn auth)" << dendl; | |
11fdf7f2 | 8119 | ceph_assert(mdr->more()->waiting_on_slave.count(last) == 0); |
7c673cae FG |
8120 | _rename_prepare_witness(mdr, last, witnesses, srctrace, desttrace, straydn); |
8121 | return; | |
8122 | } | |
8123 | ||
8124 | // test hack: bail after slave does prepare, so we can verify it's _live_ rollback. | |
8125 | if (!mdr->more()->slaves.empty() && !srci->is_dir()) | |
11fdf7f2 | 8126 | ceph_assert(g_conf()->mds_kill_rename_at != 3); |
7c673cae | 8127 | if (!mdr->more()->slaves.empty() && srci->is_dir()) |
11fdf7f2 | 8128 | ceph_assert(g_conf()->mds_kill_rename_at != 4); |
7c673cae FG |
8129 | |
8130 | // -- declare now -- | |
8131 | mdr->set_mds_stamp(ceph_clock_now()); | |
8132 | ||
8133 | // -- prepare journal entry -- | |
8134 | mdr->ls = mdlog->get_current_segment(); | |
8135 | EUpdate *le = new EUpdate(mdlog, "rename"); | |
8136 | mdlog->start_entry(le); | |
8137 | le->metablob.add_client_req(mdr->reqid, mdr->client_request->get_oldest_client_tid()); | |
8138 | if (!mdr->more()->witnessed.empty()) { | |
8139 | dout(20) << " noting uncommitted_slaves " << mdr->more()->witnessed << dendl; | |
8140 | ||
8141 | le->reqid = mdr->reqid; | |
8142 | le->had_slaves = true; | |
8143 | ||
8144 | mdcache->add_uncommitted_master(mdr->reqid, mdr->ls, mdr->more()->witnessed); | |
8145 | // no need to send frozen auth pin to recovring auth MDS of srci | |
8146 | mdr->more()->is_remote_frozen_authpin = false; | |
8147 | } | |
8148 | ||
8149 | _rename_prepare(mdr, &le->metablob, &le->client_map, srcdn, destdn, straydn); | |
8150 | if (le->client_map.length()) | |
8151 | le->cmapv = mds->sessionmap.get_projected(); | |
8152 | ||
8153 | // -- commit locally -- | |
8154 | C_MDS_rename_finish *fin = new C_MDS_rename_finish(this, mdr, srcdn, destdn, straydn); | |
8155 | ||
8156 | journal_and_reply(mdr, srci, destdn, le, fin); | |
81eedcae | 8157 | mds->balancer->maybe_fragment(destdn->get_dir(), false); |
7c673cae FG |
8158 | } |
8159 | ||
8160 | ||
8161 | void Server::_rename_finish(MDRequestRef& mdr, CDentry *srcdn, CDentry *destdn, CDentry *straydn) | |
8162 | { | |
8163 | dout(10) << "_rename_finish " << *mdr << dendl; | |
8164 | ||
8165 | if (!mdr->more()->witnessed.empty()) | |
8166 | mdcache->logged_master_update(mdr->reqid); | |
8167 | ||
8168 | // apply | |
8169 | _rename_apply(mdr, srcdn, destdn, straydn); | |
8170 | ||
8171 | mdcache->send_dentry_link(destdn, mdr); | |
8172 | ||
8173 | CDentry::linkage_t *destdnl = destdn->get_linkage(); | |
8174 | CInode *in = destdnl->get_inode(); | |
8175 | bool need_eval = mdr->more()->cap_imports.count(in); | |
8176 | ||
8177 | // test hack: test slave commit | |
8178 | if (!mdr->more()->slaves.empty() && !in->is_dir()) | |
11fdf7f2 | 8179 | ceph_assert(g_conf()->mds_kill_rename_at != 5); |
7c673cae | 8180 | if (!mdr->more()->slaves.empty() && in->is_dir()) |
11fdf7f2 | 8181 | ceph_assert(g_conf()->mds_kill_rename_at != 6); |
7c673cae FG |
8182 | |
8183 | // bump popularity | |
11fdf7f2 | 8184 | mds->balancer->hit_dir(srcdn->get_dir(), META_POP_IWR); |
7c673cae | 8185 | if (destdnl->is_remote() && in->is_auth()) |
11fdf7f2 | 8186 | mds->balancer->hit_inode(in, META_POP_IWR); |
7c673cae FG |
8187 | |
8188 | // did we import srci? if so, explicitly ack that import that, before we unlock and reply. | |
8189 | ||
11fdf7f2 | 8190 | ceph_assert(g_conf()->mds_kill_rename_at != 7); |
7c673cae FG |
8191 | |
8192 | // reply | |
8193 | respond_to_request(mdr, 0); | |
8194 | ||
8195 | if (need_eval) | |
8196 | mds->locker->eval(in, CEPH_CAP_LOCKS, true); | |
8197 | ||
8198 | // clean up? | |
8199 | // respond_to_request() drops locks. So stray reintegration can race with us. | |
8200 | if (straydn && !straydn->get_projected_linkage()->is_null()) { | |
8201 | mdcache->notify_stray(straydn); | |
8202 | } | |
8203 | } | |
8204 | ||
8205 | ||
8206 | ||
8207 | // helpers | |
8208 | ||
8209 | bool Server::_rename_prepare_witness(MDRequestRef& mdr, mds_rank_t who, set<mds_rank_t> &witnesse, | |
8210 | vector<CDentry*>& srctrace, vector<CDentry*>& dsttrace, CDentry *straydn) | |
8211 | { | |
8212 | if (mds->is_cluster_degraded() && | |
8213 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(who)) { | |
8214 | dout(10) << "_rename_prepare_witness mds." << who << " is not active" << dendl; | |
8215 | if (mdr->more()->waiting_on_slave.empty()) | |
8216 | mds->wait_for_active_peer(who, new C_MDS_RetryRequest(mdcache, mdr)); | |
8217 | return false; | |
8218 | } | |
8219 | ||
8220 | dout(10) << "_rename_prepare_witness mds." << who << dendl; | |
9f95a23c | 8221 | auto req = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_RENAMEPREP); |
7c673cae FG |
8222 | |
8223 | req->srcdnpath = filepath(srctrace.front()->get_dir()->ino()); | |
8224 | for (auto dn : srctrace) | |
94b18763 | 8225 | req->srcdnpath.push_dentry(dn->get_name()); |
7c673cae FG |
8226 | req->destdnpath = filepath(dsttrace.front()->get_dir()->ino()); |
8227 | for (auto dn : dsttrace) | |
94b18763 | 8228 | req->destdnpath.push_dentry(dn->get_name()); |
7c673cae | 8229 | if (straydn) |
9f95a23c | 8230 | mdcache->encode_replica_stray(straydn, who, req->straybl); |
11fdf7f2 TL |
8231 | |
8232 | if (mdr->more()->srci_srnode) | |
8233 | encode(*mdr->more()->srci_srnode, req->srci_snapbl); | |
8234 | if (mdr->more()->desti_srnode) | |
8235 | encode(*mdr->more()->desti_srnode, req->desti_snapbl); | |
31f18b77 FG |
8236 | |
8237 | req->srcdn_auth = mdr->more()->srcdn_auth_mds; | |
7c673cae FG |
8238 | |
8239 | // srcdn auth will verify our current witness list is sufficient | |
8240 | req->witnesses = witnesse; | |
8241 | ||
8242 | req->op_stamp = mdr->get_op_stamp(); | |
8243 | mds->send_message_mds(req, who); | |
8244 | ||
11fdf7f2 | 8245 | ceph_assert(mdr->more()->waiting_on_slave.count(who) == 0); |
7c673cae FG |
8246 | mdr->more()->waiting_on_slave.insert(who); |
8247 | return true; | |
8248 | } | |
8249 | ||
8250 | version_t Server::_rename_prepare_import(MDRequestRef& mdr, CDentry *srcdn, bufferlist *client_map_bl) | |
8251 | { | |
8252 | version_t oldpv = mdr->more()->inode_import_v; | |
8253 | ||
8254 | CDentry::linkage_t *srcdnl = srcdn->get_linkage(); | |
8255 | ||
8256 | /* import node */ | |
11fdf7f2 | 8257 | auto blp = mdr->more()->inode_import.cbegin(); |
7c673cae FG |
8258 | |
8259 | // imported caps | |
28e407b8 | 8260 | map<client_t,entity_inst_t> client_map; |
11fdf7f2 | 8261 | map<client_t, client_metadata_t> client_metadata_map; |
28e407b8 | 8262 | decode(client_map, blp); |
11fdf7f2 TL |
8263 | decode(client_metadata_map, blp); |
8264 | prepare_force_open_sessions(client_map, client_metadata_map, | |
8265 | mdr->more()->imported_session_map); | |
28e407b8 | 8266 | encode(client_map, *client_map_bl, mds->mdsmap->get_up_features()); |
11fdf7f2 | 8267 | encode(client_metadata_map, *client_map_bl); |
7c673cae FG |
8268 | |
8269 | list<ScatterLock*> updated_scatterlocks; | |
8270 | mdcache->migrator->decode_import_inode(srcdn, blp, srcdn->authority().first, mdr->ls, | |
8271 | mdr->more()->cap_imports, updated_scatterlocks); | |
8272 | ||
8273 | // hack: force back to !auth and clean, temporarily | |
8274 | srcdnl->get_inode()->state_clear(CInode::STATE_AUTH); | |
8275 | srcdnl->get_inode()->mark_clean(); | |
8276 | ||
8277 | return oldpv; | |
8278 | } | |
8279 | ||
8280 | bool Server::_need_force_journal(CInode *diri, bool empty) | |
8281 | { | |
9f95a23c | 8282 | auto&& dirs = diri->get_dirfrags(); |
7c673cae FG |
8283 | |
8284 | bool force_journal = false; | |
8285 | if (empty) { | |
11fdf7f2 TL |
8286 | for (const auto& dir : dirs) { |
8287 | if (dir->is_subtree_root() && dir->get_dir_auth().first == mds->get_nodeid()) { | |
8288 | dout(10) << " frag " << dir->get_frag() << " is auth subtree dirfrag, will force journal" << dendl; | |
7c673cae FG |
8289 | force_journal = true; |
8290 | break; | |
8291 | } else | |
11fdf7f2 | 8292 | dout(20) << " frag " << dir->get_frag() << " is not auth subtree dirfrag" << dendl; |
7c673cae FG |
8293 | } |
8294 | } else { | |
8295 | // see if any children of our frags are auth subtrees. | |
11fdf7f2 TL |
8296 | std::vector<CDir*> subtrees; |
8297 | mdcache->get_subtrees(subtrees); | |
8298 | dout(10) << " subtrees " << subtrees << " frags " << dirs << dendl; | |
8299 | for (const auto& dir : dirs) { | |
8300 | for (const auto& subtree : subtrees) { | |
8301 | if (dir->contains(subtree)) { | |
8302 | if (subtree->get_dir_auth().first == mds->get_nodeid()) { | |
8303 | dout(10) << " frag " << dir->get_frag() << " contains (maybe) auth subtree, will force journal " | |
8304 | << *subtree << dendl; | |
7c673cae FG |
8305 | force_journal = true; |
8306 | break; | |
8307 | } else | |
11fdf7f2 | 8308 | dout(20) << " frag " << dir->get_frag() << " contains but isn't auth for " << *subtree << dendl; |
7c673cae | 8309 | } else |
11fdf7f2 | 8310 | dout(20) << " frag " << dir->get_frag() << " does not contain " << *subtree << dendl; |
7c673cae FG |
8311 | } |
8312 | if (force_journal) | |
8313 | break; | |
8314 | } | |
8315 | } | |
8316 | return force_journal; | |
8317 | } | |
8318 | ||
8319 | void Server::_rename_prepare(MDRequestRef& mdr, | |
8320 | EMetaBlob *metablob, bufferlist *client_map_bl, | |
8321 | CDentry *srcdn, CDentry *destdn, CDentry *straydn) | |
8322 | { | |
8323 | dout(10) << "_rename_prepare " << *mdr << " " << *srcdn << " " << *destdn << dendl; | |
8324 | if (straydn) | |
8325 | dout(10) << " straydn " << *straydn << dendl; | |
8326 | ||
8327 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); | |
8328 | CDentry::linkage_t *destdnl = destdn->get_projected_linkage(); | |
8329 | CInode *srci = srcdnl->get_inode(); | |
8330 | CInode *oldin = destdnl->get_inode(); | |
8331 | ||
8332 | // primary+remote link merge? | |
11fdf7f2 TL |
8333 | bool linkmerge = (srci == oldin); |
8334 | if (linkmerge) | |
8335 | ceph_assert(srcdnl->is_primary() && destdnl->is_remote()); | |
7c673cae FG |
8336 | bool silent = srcdn->get_dir()->inode->is_stray(); |
8337 | ||
8338 | bool force_journal_dest = false; | |
8339 | if (srci->is_dir() && !destdn->is_auth()) { | |
8340 | if (srci->is_auth()) { | |
8341 | // if we are auth for srci and exporting it, force journal because journal replay needs | |
8342 | // the source inode to create auth subtrees. | |
8343 | dout(10) << " we are exporting srci, will force journal destdn" << dendl; | |
8344 | force_journal_dest = true; | |
8345 | } else | |
8346 | force_journal_dest = _need_force_journal(srci, false); | |
8347 | } | |
8348 | ||
8349 | bool force_journal_stray = false; | |
8350 | if (oldin && oldin->is_dir() && straydn && !straydn->is_auth()) | |
8351 | force_journal_stray = _need_force_journal(oldin, true); | |
8352 | ||
8353 | if (linkmerge) | |
8354 | dout(10) << " merging remote and primary links to the same inode" << dendl; | |
8355 | if (silent) | |
8356 | dout(10) << " reintegrating stray; will avoid changing nlink or dir mtime" << dendl; | |
8357 | if (force_journal_dest) | |
8358 | dout(10) << " forcing journal destdn because we (will) have auth subtrees nested beneath it" << dendl; | |
8359 | if (force_journal_stray) | |
8360 | dout(10) << " forcing journal straydn because we (will) have auth subtrees nested beneath it" << dendl; | |
8361 | ||
8362 | if (srci->is_dir() && (destdn->is_auth() || force_journal_dest)) { | |
8363 | dout(10) << " noting renamed dir ino " << srci->ino() << " in metablob" << dendl; | |
8364 | metablob->renamed_dirino = srci->ino(); | |
8365 | } else if (oldin && oldin->is_dir() && force_journal_stray) { | |
8366 | dout(10) << " noting rename target dir " << oldin->ino() << " in metablob" << dendl; | |
8367 | metablob->renamed_dirino = oldin->ino(); | |
8368 | } | |
8369 | ||
8370 | // prepare | |
94b18763 FG |
8371 | CInode::mempool_inode *spi = 0; // renamed inode |
8372 | CInode::mempool_inode *tpi = 0; // target/overwritten inode | |
7c673cae FG |
8373 | |
8374 | // target inode | |
8375 | if (!linkmerge) { | |
8376 | if (destdnl->is_primary()) { | |
11fdf7f2 | 8377 | ceph_assert(straydn); // moving to straydn. |
7c673cae FG |
8378 | // link--, and move. |
8379 | if (destdn->is_auth()) { | |
94b18763 FG |
8380 | auto &pi= oldin->project_inode(); //project_snaprealm |
8381 | pi.inode.version = straydn->pre_dirty(pi.inode.version); | |
8382 | pi.inode.update_backtrace(); | |
8383 | tpi = &pi.inode; | |
7c673cae FG |
8384 | } |
8385 | straydn->push_projected_linkage(oldin); | |
8386 | } else if (destdnl->is_remote()) { | |
8387 | // nlink-- targeti | |
8388 | if (oldin->is_auth()) { | |
94b18763 FG |
8389 | auto &pi = oldin->project_inode(); |
8390 | pi.inode.version = oldin->pre_dirty(); | |
8391 | tpi = &pi.inode; | |
7c673cae FG |
8392 | } |
8393 | } | |
8394 | } | |
8395 | ||
8396 | // dest | |
8397 | if (srcdnl->is_remote()) { | |
8398 | if (!linkmerge) { | |
8399 | // destdn | |
8400 | if (destdn->is_auth()) | |
8401 | mdr->more()->pvmap[destdn] = destdn->pre_dirty(); | |
8402 | destdn->push_projected_linkage(srcdnl->get_remote_ino(), srcdnl->get_remote_d_type()); | |
8403 | // srci | |
8404 | if (srci->is_auth()) { | |
94b18763 FG |
8405 | auto &pi = srci->project_inode(); |
8406 | pi.inode.version = srci->pre_dirty(); | |
8407 | spi = &pi.inode; | |
7c673cae FG |
8408 | } |
8409 | } else { | |
8410 | dout(10) << " will merge remote onto primary link" << dendl; | |
8411 | if (destdn->is_auth()) { | |
94b18763 FG |
8412 | auto &pi = oldin->project_inode(); |
8413 | pi.inode.version = mdr->more()->pvmap[destdn] = destdn->pre_dirty(oldin->inode.version); | |
8414 | spi = &pi.inode; | |
7c673cae FG |
8415 | } |
8416 | } | |
8417 | } else { // primary | |
8418 | if (destdn->is_auth()) { | |
8419 | version_t oldpv; | |
8420 | if (srcdn->is_auth()) | |
8421 | oldpv = srci->get_projected_version(); | |
8422 | else { | |
8423 | oldpv = _rename_prepare_import(mdr, srcdn, client_map_bl); | |
8424 | ||
8425 | // note which dirfrags have child subtrees in the journal | |
8426 | // event, so that we can open those (as bounds) during replay. | |
8427 | if (srci->is_dir()) { | |
9f95a23c TL |
8428 | auto&& ls = srci->get_dirfrags(); |
8429 | for (const auto& dir : ls) { | |
7c673cae FG |
8430 | if (!dir->is_auth()) |
8431 | metablob->renamed_dir_frags.push_back(dir->get_frag()); | |
8432 | } | |
8433 | dout(10) << " noting renamed dir open frags " << metablob->renamed_dir_frags << dendl; | |
8434 | } | |
8435 | } | |
94b18763 | 8436 | auto &pi = srci->project_inode(); // project snaprealm if srcdnl->is_primary |
7c673cae | 8437 | // & srcdnl->snaprealm |
94b18763 FG |
8438 | pi.inode.version = mdr->more()->pvmap[destdn] = destdn->pre_dirty(oldpv); |
8439 | pi.inode.update_backtrace(); | |
8440 | spi = &pi.inode; | |
7c673cae FG |
8441 | } |
8442 | destdn->push_projected_linkage(srci); | |
8443 | } | |
8444 | ||
8445 | // src | |
8446 | if (srcdn->is_auth()) | |
8447 | mdr->more()->pvmap[srcdn] = srcdn->pre_dirty(); | |
8448 | srcdn->push_projected_linkage(); // push null linkage | |
8449 | ||
8450 | if (!silent) { | |
94b18763 | 8451 | if (spi) { |
91327a77 AA |
8452 | spi->ctime = mdr->get_op_stamp(); |
8453 | if (mdr->get_op_stamp() > spi->rstat.rctime) | |
8454 | spi->rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 8455 | spi->change_attr++; |
7c673cae | 8456 | if (linkmerge) |
94b18763 | 8457 | spi->nlink--; |
7c673cae FG |
8458 | } |
8459 | if (tpi) { | |
91327a77 AA |
8460 | tpi->ctime = mdr->get_op_stamp(); |
8461 | if (mdr->get_op_stamp() > tpi->rstat.rctime) | |
8462 | tpi->rstat.rctime = mdr->get_op_stamp(); | |
7c673cae | 8463 | tpi->change_attr++; |
94b18763 FG |
8464 | { |
8465 | std::string t; | |
8466 | destdn->make_path_string(t, true); | |
11fdf7f2 | 8467 | tpi->stray_prior_path = std::move(t); |
94b18763 | 8468 | } |
7c673cae FG |
8469 | tpi->nlink--; |
8470 | if (tpi->nlink == 0) | |
8471 | oldin->state_set(CInode::STATE_ORPHAN); | |
8472 | } | |
8473 | } | |
8474 | ||
8475 | // prepare nesting, mtime updates | |
8476 | int predirty_dir = silent ? 0:PREDIRTY_DIR; | |
8477 | ||
8478 | // guarantee stray dir is processed first during journal replay. unlink the old inode, | |
8479 | // then link the source inode to destdn | |
8480 | if (destdnl->is_primary()) { | |
11fdf7f2 | 8481 | ceph_assert(straydn); |
7c673cae FG |
8482 | if (straydn->is_auth()) { |
8483 | metablob->add_dir_context(straydn->get_dir()); | |
8484 | metablob->add_dir(straydn->get_dir(), true); | |
8485 | } | |
8486 | } | |
8487 | ||
8488 | // sub off target | |
8489 | if (destdn->is_auth() && !destdnl->is_null()) { | |
8490 | mdcache->predirty_journal_parents(mdr, metablob, oldin, destdn->get_dir(), | |
8491 | (destdnl->is_primary() ? PREDIRTY_PRIMARY:0)|predirty_dir, -1); | |
224ce89b | 8492 | if (destdnl->is_primary()) { |
11fdf7f2 | 8493 | ceph_assert(straydn); |
7c673cae FG |
8494 | mdcache->predirty_journal_parents(mdr, metablob, oldin, straydn->get_dir(), |
8495 | PREDIRTY_PRIMARY|PREDIRTY_DIR, 1); | |
224ce89b | 8496 | } |
7c673cae FG |
8497 | } |
8498 | ||
8499 | // move srcdn | |
8500 | int predirty_primary = (srcdnl->is_primary() && srcdn->get_dir() != destdn->get_dir()) ? PREDIRTY_PRIMARY:0; | |
8501 | int flags = predirty_dir | predirty_primary; | |
8502 | if (srcdn->is_auth()) | |
8503 | mdcache->predirty_journal_parents(mdr, metablob, srci, srcdn->get_dir(), PREDIRTY_SHALLOW|flags, -1); | |
8504 | if (destdn->is_auth()) | |
8505 | mdcache->predirty_journal_parents(mdr, metablob, srci, destdn->get_dir(), flags, 1); | |
8506 | ||
7c673cae FG |
8507 | // add it all to the metablob |
8508 | // target inode | |
8509 | if (!linkmerge) { | |
8510 | if (destdnl->is_primary()) { | |
11fdf7f2 | 8511 | ceph_assert(straydn); |
7c673cae FG |
8512 | if (destdn->is_auth()) { |
8513 | // project snaprealm, too | |
11fdf7f2 TL |
8514 | if (auto& desti_srnode = mdr->more()->desti_srnode) { |
8515 | oldin->project_snaprealm(desti_srnode); | |
8516 | if (tpi->nlink == 0) | |
8517 | ceph_assert(!desti_srnode->is_parent_global()); | |
8518 | desti_srnode = NULL; | |
8519 | } | |
8520 | straydn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7c673cae FG |
8521 | metablob->add_primary_dentry(straydn, oldin, true, true); |
8522 | } else if (force_journal_stray) { | |
8523 | dout(10) << " forced journaling straydn " << *straydn << dendl; | |
8524 | metablob->add_dir_context(straydn->get_dir()); | |
8525 | metablob->add_primary_dentry(straydn, oldin, true); | |
8526 | } | |
8527 | } else if (destdnl->is_remote()) { | |
8528 | if (oldin->is_auth()) { | |
11fdf7f2 TL |
8529 | sr_t *new_srnode = NULL; |
8530 | if (mdr->slave_request) { | |
8531 | if (mdr->slave_request->desti_snapbl.length() > 0) { | |
8532 | new_srnode = new sr_t(); | |
8533 | auto p = mdr->slave_request->desti_snapbl.cbegin(); | |
8534 | decode(*new_srnode, p); | |
8535 | } | |
8536 | } else if (auto& desti_srnode = mdr->more()->desti_srnode) { | |
8537 | new_srnode = desti_srnode; | |
8538 | desti_srnode = NULL; | |
8539 | } | |
8540 | if (new_srnode) { | |
8541 | oldin->project_snaprealm(new_srnode); | |
8542 | if (tpi->nlink == 0) | |
8543 | ceph_assert(!new_srnode->is_parent_global()); | |
8544 | } | |
7c673cae FG |
8545 | // auth for targeti |
8546 | metablob->add_dir_context(oldin->get_projected_parent_dir()); | |
8547 | mdcache->journal_cow_dentry(mdr.get(), metablob, oldin->get_projected_parent_dn(), | |
8548 | CEPH_NOSNAP, 0, destdnl); | |
8549 | metablob->add_primary_dentry(oldin->get_projected_parent_dn(), oldin, true); | |
8550 | } | |
8551 | } | |
8552 | } | |
8553 | ||
8554 | // dest | |
8555 | if (srcdnl->is_remote()) { | |
11fdf7f2 TL |
8556 | ceph_assert(!linkmerge); |
8557 | if (destdn->is_auth() && !destdnl->is_null()) | |
8558 | mdcache->journal_cow_dentry(mdr.get(), metablob, destdn, CEPH_NOSNAP, 0, destdnl); | |
8559 | else | |
8560 | destdn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7c673cae | 8561 | |
11fdf7f2 TL |
8562 | if (destdn->is_auth()) |
8563 | metablob->add_remote_dentry(destdn, true, srcdnl->get_remote_ino(), srcdnl->get_remote_d_type()); | |
8564 | ||
8565 | if (srci->is_auth() ) { // it's remote | |
8566 | if (mdr->slave_request) { | |
8567 | if (mdr->slave_request->srci_snapbl.length() > 0) { | |
8568 | sr_t *new_srnode = new sr_t(); | |
8569 | auto p = mdr->slave_request->srci_snapbl.cbegin(); | |
8570 | decode(*new_srnode, p); | |
8571 | srci->project_snaprealm(new_srnode); | |
8572 | } | |
8573 | } else if (auto& srci_srnode = mdr->more()->srci_srnode) { | |
8574 | srci->project_snaprealm(srci_srnode); | |
8575 | srci_srnode = NULL; | |
7c673cae | 8576 | } |
7c673cae | 8577 | |
11fdf7f2 TL |
8578 | CDentry *srci_pdn = srci->get_projected_parent_dn(); |
8579 | metablob->add_dir_context(srci_pdn->get_dir()); | |
8580 | mdcache->journal_cow_dentry(mdr.get(), metablob, srci_pdn, CEPH_NOSNAP, 0, srcdnl); | |
8581 | metablob->add_primary_dentry(srci_pdn, srci, true); | |
7c673cae FG |
8582 | } |
8583 | } else if (srcdnl->is_primary()) { | |
8584 | // project snap parent update? | |
11fdf7f2 TL |
8585 | if (destdn->is_auth()) { |
8586 | if (auto& srci_srnode = mdr->more()->srci_srnode) { | |
8587 | srci->project_snaprealm(srci_srnode); | |
8588 | srci_srnode = NULL; | |
8589 | } | |
8590 | } | |
7c673cae FG |
8591 | |
8592 | if (destdn->is_auth() && !destdnl->is_null()) | |
8593 | mdcache->journal_cow_dentry(mdr.get(), metablob, destdn, CEPH_NOSNAP, 0, destdnl); | |
11fdf7f2 TL |
8594 | |
8595 | destdn->first = mdcache->get_global_snaprealm()->get_newest_seq() + 1; | |
7c673cae FG |
8596 | |
8597 | if (destdn->is_auth()) | |
8598 | metablob->add_primary_dentry(destdn, srci, true, true); | |
8599 | else if (force_journal_dest) { | |
8600 | dout(10) << " forced journaling destdn " << *destdn << dendl; | |
8601 | metablob->add_dir_context(destdn->get_dir()); | |
8602 | metablob->add_primary_dentry(destdn, srci, true); | |
8603 | if (srcdn->is_auth() && srci->is_dir()) { | |
8604 | // journal new subtrees root dirfrags | |
9f95a23c TL |
8605 | auto&& ls = srci->get_dirfrags(); |
8606 | for (const auto& dir : ls) { | |
7c673cae FG |
8607 | if (dir->is_auth()) |
8608 | metablob->add_dir(dir, true); | |
8609 | } | |
8610 | } | |
8611 | } | |
8612 | } | |
8613 | ||
8614 | // src | |
8615 | if (srcdn->is_auth()) { | |
8616 | dout(10) << " journaling srcdn " << *srcdn << dendl; | |
8617 | mdcache->journal_cow_dentry(mdr.get(), metablob, srcdn, CEPH_NOSNAP, 0, srcdnl); | |
8618 | // also journal the inode in case we need do slave rename rollback. It is Ok to add | |
8619 | // both primary and NULL dentries. Because during journal replay, null dentry is | |
8620 | // processed after primary dentry. | |
8621 | if (srcdnl->is_primary() && !srci->is_dir() && !destdn->is_auth()) | |
8622 | metablob->add_primary_dentry(srcdn, srci, true); | |
8623 | metablob->add_null_dentry(srcdn, true); | |
8624 | } else | |
8625 | dout(10) << " NOT journaling srcdn " << *srcdn << dendl; | |
8626 | ||
8627 | // make renamed inode first track the dn | |
11fdf7f2 TL |
8628 | if (srcdnl->is_primary() && destdn->is_auth()) { |
8629 | ceph_assert(srci->first <= destdn->first); | |
8630 | srci->first = destdn->first; | |
8631 | } | |
8632 | // make stray inode first track the straydn | |
8633 | if (straydn && straydn->is_auth()) { | |
8634 | ceph_assert(oldin->first <= straydn->first); | |
8635 | oldin->first = straydn->first; | |
8636 | } | |
7c673cae | 8637 | |
224ce89b | 8638 | if (oldin && oldin->is_dir()) { |
11fdf7f2 | 8639 | ceph_assert(straydn); |
7c673cae | 8640 | mdcache->project_subtree_rename(oldin, destdn->get_dir(), straydn->get_dir()); |
224ce89b | 8641 | } |
7c673cae FG |
8642 | if (srci->is_dir()) |
8643 | mdcache->project_subtree_rename(srci, srcdn->get_dir(), destdn->get_dir()); | |
8644 | ||
8645 | } | |
8646 | ||
8647 | ||
8648 | void Server::_rename_apply(MDRequestRef& mdr, CDentry *srcdn, CDentry *destdn, CDentry *straydn) | |
8649 | { | |
8650 | dout(10) << "_rename_apply " << *mdr << " " << *srcdn << " " << *destdn << dendl; | |
8651 | dout(10) << " pvs " << mdr->more()->pvmap << dendl; | |
8652 | ||
8653 | CDentry::linkage_t *srcdnl = srcdn->get_linkage(); | |
8654 | CDentry::linkage_t *destdnl = destdn->get_linkage(); | |
8655 | ||
8656 | CInode *oldin = destdnl->get_inode(); | |
7c673cae FG |
8657 | |
8658 | // primary+remote link merge? | |
11fdf7f2 TL |
8659 | bool linkmerge = (srcdnl->get_inode() == oldin); |
8660 | if (linkmerge) | |
8661 | ceph_assert(srcdnl->is_primary() || destdnl->is_remote()); | |
8662 | ||
8663 | bool new_in_snaprealm = false; | |
8664 | bool new_oldin_snaprealm = false; | |
7c673cae FG |
8665 | |
8666 | // target inode | |
8667 | if (!linkmerge) { | |
8668 | if (destdnl->is_primary()) { | |
11fdf7f2 | 8669 | ceph_assert(straydn); |
7c673cae | 8670 | dout(10) << "straydn is " << *straydn << dendl; |
11fdf7f2 TL |
8671 | |
8672 | // if there is newly created snaprealm, need to split old snaprealm's | |
8673 | // inodes_with_caps. So pop snaprealm before linkage changes. | |
8674 | if (destdn->is_auth()) { | |
8675 | bool hadrealm = (oldin->snaprealm ? true : false); | |
8676 | oldin->early_pop_projected_snaprealm(); | |
8677 | new_oldin_snaprealm = (oldin->snaprealm && !hadrealm); | |
8678 | } else { | |
8679 | ceph_assert(mdr->slave_request); | |
8680 | if (mdr->slave_request->desti_snapbl.length()) { | |
8681 | new_oldin_snaprealm = !oldin->snaprealm; | |
8682 | oldin->decode_snap_blob(mdr->slave_request->desti_snapbl); | |
8683 | ceph_assert(oldin->snaprealm); | |
8684 | ceph_assert(oldin->snaprealm->have_past_parents_open()); | |
8685 | } | |
8686 | } | |
8687 | ||
31f18b77 | 8688 | destdn->get_dir()->unlink_inode(destdn, false); |
7c673cae FG |
8689 | |
8690 | straydn->pop_projected_linkage(); | |
8691 | if (mdr->is_slave() && !mdr->more()->slave_update_journaled) | |
11fdf7f2 | 8692 | ceph_assert(!straydn->is_projected()); // no other projected |
7c673cae FG |
8693 | |
8694 | // nlink-- targeti | |
11fdf7f2 | 8695 | if (destdn->is_auth()) |
7c673cae | 8696 | oldin->pop_and_dirty_projected_inode(mdr->ls); |
11fdf7f2 TL |
8697 | |
8698 | mdcache->touch_dentry_bottom(straydn); // drop dn as quickly as possible. | |
7c673cae | 8699 | } else if (destdnl->is_remote()) { |
31f18b77 | 8700 | destdn->get_dir()->unlink_inode(destdn, false); |
11fdf7f2 TL |
8701 | if (oldin->is_auth()) { |
8702 | oldin->pop_and_dirty_projected_inode(mdr->ls); | |
8703 | } else if (mdr->slave_request) { | |
8704 | if (mdr->slave_request->desti_snapbl.length() > 0) { | |
8705 | ceph_assert(oldin->snaprealm); | |
8706 | oldin->decode_snap_blob(mdr->slave_request->desti_snapbl); | |
8707 | } | |
8708 | } else if (auto& desti_srnode = mdr->more()->desti_srnode) { | |
8709 | delete desti_srnode; | |
8710 | desti_srnode = NULL; | |
8711 | } | |
7c673cae FG |
8712 | } |
8713 | } | |
8714 | ||
8715 | // unlink src before we relink it at dest | |
8716 | CInode *in = srcdnl->get_inode(); | |
11fdf7f2 | 8717 | ceph_assert(in); |
7c673cae FG |
8718 | |
8719 | bool srcdn_was_remote = srcdnl->is_remote(); | |
11fdf7f2 TL |
8720 | if (!srcdn_was_remote) { |
8721 | // if there is newly created snaprealm, need to split old snaprealm's | |
8722 | // inodes_with_caps. So pop snaprealm before linkage changes. | |
8723 | if (destdn->is_auth()) { | |
8724 | bool hadrealm = (in->snaprealm ? true : false); | |
8725 | in->early_pop_projected_snaprealm(); | |
8726 | new_in_snaprealm = (in->snaprealm && !hadrealm); | |
8727 | } else { | |
8728 | ceph_assert(mdr->slave_request); | |
8729 | if (mdr->slave_request->srci_snapbl.length()) { | |
8730 | new_in_snaprealm = !in->snaprealm; | |
8731 | in->decode_snap_blob(mdr->slave_request->srci_snapbl); | |
8732 | ceph_assert(in->snaprealm); | |
8733 | ceph_assert(in->snaprealm->have_past_parents_open()); | |
8734 | } | |
8735 | } | |
8736 | } | |
8737 | ||
7c673cae FG |
8738 | srcdn->get_dir()->unlink_inode(srcdn); |
8739 | ||
8740 | // dest | |
8741 | if (srcdn_was_remote) { | |
8742 | if (!linkmerge) { | |
8743 | // destdn | |
8744 | destdnl = destdn->pop_projected_linkage(); | |
8745 | if (mdr->is_slave() && !mdr->more()->slave_update_journaled) | |
11fdf7f2 | 8746 | ceph_assert(!destdn->is_projected()); // no other projected |
7c673cae FG |
8747 | |
8748 | destdn->link_remote(destdnl, in); | |
8749 | if (destdn->is_auth()) | |
8750 | destdn->mark_dirty(mdr->more()->pvmap[destdn], mdr->ls); | |
8751 | // in | |
11fdf7f2 | 8752 | if (in->is_auth()) { |
7c673cae | 8753 | in->pop_and_dirty_projected_inode(mdr->ls); |
11fdf7f2 TL |
8754 | } else if (mdr->slave_request) { |
8755 | if (mdr->slave_request->srci_snapbl.length() > 0) { | |
8756 | ceph_assert(in->snaprealm); | |
8757 | in->decode_snap_blob(mdr->slave_request->srci_snapbl); | |
8758 | } | |
8759 | } else if (auto& srci_srnode = mdr->more()->srci_srnode) { | |
8760 | delete srci_srnode; | |
8761 | srci_srnode = NULL; | |
8762 | } | |
7c673cae FG |
8763 | } else { |
8764 | dout(10) << "merging remote onto primary link" << dendl; | |
8765 | oldin->pop_and_dirty_projected_inode(mdr->ls); | |
8766 | } | |
8767 | } else { // primary | |
8768 | if (linkmerge) { | |
8769 | dout(10) << "merging primary onto remote link" << dendl; | |
31f18b77 | 8770 | destdn->get_dir()->unlink_inode(destdn, false); |
7c673cae FG |
8771 | } |
8772 | destdnl = destdn->pop_projected_linkage(); | |
8773 | if (mdr->is_slave() && !mdr->more()->slave_update_journaled) | |
11fdf7f2 | 8774 | ceph_assert(!destdn->is_projected()); // no other projected |
7c673cae FG |
8775 | |
8776 | // srcdn inode import? | |
8777 | if (!srcdn->is_auth() && destdn->is_auth()) { | |
11fdf7f2 | 8778 | ceph_assert(mdr->more()->inode_import.length() > 0); |
7c673cae FG |
8779 | |
8780 | map<client_t,Capability::Import> imported_caps; | |
8781 | ||
8782 | // finish cap imports | |
28e407b8 | 8783 | finish_force_open_sessions(mdr->more()->imported_session_map); |
7c673cae FG |
8784 | if (mdr->more()->cap_imports.count(destdnl->get_inode())) { |
8785 | mdcache->migrator->finish_import_inode_caps(destdnl->get_inode(), | |
28e407b8 AA |
8786 | mdr->more()->srcdn_auth_mds, true, |
8787 | mdr->more()->imported_session_map, | |
8788 | mdr->more()->cap_imports[destdnl->get_inode()], | |
8789 | imported_caps); | |
7c673cae FG |
8790 | } |
8791 | ||
8792 | mdr->more()->inode_import.clear(); | |
11fdf7f2 | 8793 | encode(imported_caps, mdr->more()->inode_import); |
7c673cae FG |
8794 | |
8795 | /* hack: add an auth pin for each xlock we hold. These were | |
8796 | * remote xlocks previously but now they're local and | |
8797 | * we're going to try and unpin when we xlock_finish. */ | |
11fdf7f2 TL |
8798 | |
8799 | for (auto i = mdr->locks.lower_bound(&destdnl->get_inode()->versionlock); | |
8800 | i != mdr->locks.end(); | |
8801 | ++i) { | |
8802 | SimpleLock *lock = i->lock; | |
8803 | if (lock->get_parent() != destdnl->get_inode()) | |
8804 | break; | |
8805 | if (i->is_xlock() && !lock->is_locallock()) | |
8806 | mds->locker->xlock_import(lock); | |
8807 | } | |
7c673cae FG |
8808 | |
8809 | // hack: fix auth bit | |
8810 | in->state_set(CInode::STATE_AUTH); | |
7c673cae FG |
8811 | |
8812 | mdr->clear_ambiguous_auth(); | |
8813 | } | |
8814 | ||
11fdf7f2 | 8815 | if (destdn->is_auth()) |
7c673cae | 8816 | in->pop_and_dirty_projected_inode(mdr->ls); |
7c673cae FG |
8817 | } |
8818 | ||
8819 | // src | |
8820 | if (srcdn->is_auth()) | |
8821 | srcdn->mark_dirty(mdr->more()->pvmap[srcdn], mdr->ls); | |
8822 | srcdn->pop_projected_linkage(); | |
8823 | if (mdr->is_slave() && !mdr->more()->slave_update_journaled) | |
11fdf7f2 | 8824 | ceph_assert(!srcdn->is_projected()); // no other projected |
7c673cae FG |
8825 | |
8826 | // apply remaining projected inodes (nested) | |
8827 | mdr->apply(); | |
8828 | ||
8829 | // update subtree map? | |
11fdf7f2 | 8830 | if (destdnl->is_primary() && in->is_dir()) |
224ce89b | 8831 | mdcache->adjust_subtree_after_rename(in, srcdn->get_dir(), true); |
7c673cae FG |
8832 | |
8833 | if (straydn && oldin->is_dir()) | |
8834 | mdcache->adjust_subtree_after_rename(oldin, destdn->get_dir(), true); | |
8835 | ||
11fdf7f2 TL |
8836 | if (new_oldin_snaprealm) |
8837 | mdcache->do_realm_invalidate_and_update_notify(oldin, CEPH_SNAP_OP_SPLIT, false); | |
8838 | if (new_in_snaprealm) | |
8839 | mdcache->do_realm_invalidate_and_update_notify(in, CEPH_SNAP_OP_SPLIT, true); | |
8840 | ||
7c673cae FG |
8841 | // removing a new dn? |
8842 | if (srcdn->is_auth()) | |
8843 | srcdn->get_dir()->try_remove_unlinked_dn(srcdn); | |
8844 | } | |
8845 | ||
8846 | ||
8847 | ||
8848 | // ------------ | |
8849 | // SLAVE | |
8850 | ||
8851 | class C_MDS_SlaveRenamePrep : public ServerLogContext { | |
8852 | CDentry *srcdn, *destdn, *straydn; | |
8853 | public: | |
8854 | C_MDS_SlaveRenamePrep(Server *s, MDRequestRef& m, CDentry *sr, CDentry *de, CDentry *st) : | |
8855 | ServerLogContext(s, m), srcdn(sr), destdn(de), straydn(st) {} | |
8856 | void finish(int r) override { | |
8857 | server->_logged_slave_rename(mdr, srcdn, destdn, straydn); | |
8858 | } | |
8859 | }; | |
8860 | ||
8861 | class C_MDS_SlaveRenameCommit : public ServerContext { | |
8862 | MDRequestRef mdr; | |
8863 | CDentry *srcdn, *destdn, *straydn; | |
8864 | public: | |
8865 | C_MDS_SlaveRenameCommit(Server *s, MDRequestRef& m, CDentry *sr, CDentry *de, CDentry *st) : | |
8866 | ServerContext(s), mdr(m), srcdn(sr), destdn(de), straydn(st) {} | |
8867 | void finish(int r) override { | |
8868 | server->_commit_slave_rename(mdr, r, srcdn, destdn, straydn); | |
8869 | } | |
8870 | }; | |
8871 | ||
8872 | class C_MDS_SlaveRenameSessionsFlushed : public ServerContext { | |
8873 | MDRequestRef mdr; | |
8874 | public: | |
8875 | C_MDS_SlaveRenameSessionsFlushed(Server *s, MDRequestRef& r) : | |
8876 | ServerContext(s), mdr(r) {} | |
8877 | void finish(int r) override { | |
8878 | server->_slave_rename_sessions_flushed(mdr); | |
8879 | } | |
8880 | }; | |
8881 | ||
7c673cae FG |
8882 | void Server::handle_slave_rename_prep(MDRequestRef& mdr) |
8883 | { | |
8884 | dout(10) << "handle_slave_rename_prep " << *mdr | |
8885 | << " " << mdr->slave_request->srcdnpath | |
8886 | << " to " << mdr->slave_request->destdnpath | |
8887 | << dendl; | |
31f18b77 FG |
8888 | |
8889 | if (mdr->slave_request->is_interrupted()) { | |
8890 | dout(10) << " slave request interrupted, sending noop reply" << dendl; | |
9f95a23c | 8891 | auto reply = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_RENAMEPREPACK); |
31f18b77 FG |
8892 | reply->mark_interrupted(); |
8893 | mds->send_message_mds(reply, mdr->slave_to_mds); | |
91327a77 | 8894 | mdr->reset_slave_request(); |
31f18b77 FG |
8895 | return; |
8896 | } | |
8897 | ||
7c673cae FG |
8898 | // discover destdn |
8899 | filepath destpath(mdr->slave_request->destdnpath); | |
8900 | dout(10) << " dest " << destpath << dendl; | |
8901 | vector<CDentry*> trace; | |
9f95a23c TL |
8902 | CF_MDS_MDRContextFactory cf(mdcache, mdr, false); |
8903 | int r = mdcache->path_traverse(mdr, cf, destpath, | |
8904 | MDS_TRAVERSE_DISCOVER | MDS_TRAVERSE_PATH_LOCKED | MDS_TRAVERSE_WANT_DENTRY, | |
8905 | &trace); | |
7c673cae FG |
8906 | if (r > 0) return; |
8907 | if (r == -ESTALE) { | |
8908 | mdcache->find_ino_peers(destpath.get_ino(), new C_MDS_RetryRequest(mdcache, mdr), | |
9f95a23c | 8909 | mdr->slave_to_mds, true); |
7c673cae FG |
8910 | return; |
8911 | } | |
11fdf7f2 | 8912 | ceph_assert(r == 0); // we shouldn't get an error here! |
7c673cae | 8913 | |
91327a77 | 8914 | CDentry *destdn = trace.back(); |
7c673cae FG |
8915 | CDentry::linkage_t *destdnl = destdn->get_projected_linkage(); |
8916 | dout(10) << " destdn " << *destdn << dendl; | |
8917 | mdr->pin(destdn); | |
8918 | ||
8919 | // discover srcdn | |
8920 | filepath srcpath(mdr->slave_request->srcdnpath); | |
8921 | dout(10) << " src " << srcpath << dendl; | |
8922 | CInode *srci = nullptr; | |
9f95a23c TL |
8923 | r = mdcache->path_traverse(mdr, cf, srcpath, |
8924 | MDS_TRAVERSE_DISCOVER | MDS_TRAVERSE_PATH_LOCKED, | |
8925 | &trace, &srci); | |
7c673cae | 8926 | if (r > 0) return; |
11fdf7f2 | 8927 | ceph_assert(r == 0); |
7c673cae | 8928 | |
91327a77 | 8929 | CDentry *srcdn = trace.back(); |
7c673cae FG |
8930 | CDentry::linkage_t *srcdnl = srcdn->get_projected_linkage(); |
8931 | dout(10) << " srcdn " << *srcdn << dendl; | |
8932 | mdr->pin(srcdn); | |
8933 | mdr->pin(srci); | |
8934 | ||
8935 | // stray? | |
11fdf7f2 TL |
8936 | bool linkmerge = srcdnl->get_inode() == destdnl->get_inode(); |
8937 | if (linkmerge) | |
8938 | ceph_assert(srcdnl->is_primary() && destdnl->is_remote()); | |
7c673cae FG |
8939 | CDentry *straydn = mdr->straydn; |
8940 | if (destdnl->is_primary() && !linkmerge) | |
11fdf7f2 | 8941 | ceph_assert(straydn); |
7c673cae FG |
8942 | |
8943 | mdr->set_op_stamp(mdr->slave_request->op_stamp); | |
8944 | mdr->more()->srcdn_auth_mds = srcdn->authority().first; | |
8945 | ||
8946 | // set up commit waiter (early, to clean up any freezing etc we do) | |
8947 | if (!mdr->more()->slave_commit) | |
8948 | mdr->more()->slave_commit = new C_MDS_SlaveRenameCommit(this, mdr, srcdn, destdn, straydn); | |
8949 | ||
8950 | // am i srcdn auth? | |
8951 | if (srcdn->is_auth()) { | |
8952 | set<mds_rank_t> srcdnrep; | |
8953 | srcdn->list_replicas(srcdnrep); | |
8954 | ||
8955 | bool reply_witness = false; | |
8956 | if (srcdnl->is_primary() && !srcdnl->get_inode()->state_test(CInode::STATE_AMBIGUOUSAUTH)) { | |
8957 | // freeze? | |
8958 | // we need this to | |
8959 | // - avoid conflicting lock state changes | |
8960 | // - avoid concurrent updates to the inode | |
8961 | // (this could also be accomplished with the versionlock) | |
11fdf7f2 | 8962 | int allowance = 3; // 1 for the mdr auth_pin, 1 for the link lock, 1 for the snap lock |
7c673cae FG |
8963 | dout(10) << " freezing srci " << *srcdnl->get_inode() << " with allowance " << allowance << dendl; |
8964 | bool frozen_inode = srcdnl->get_inode()->freeze_inode(allowance); | |
8965 | ||
8966 | // unfreeze auth pin after freezing the inode to avoid queueing waiters | |
8967 | if (srcdnl->get_inode()->is_frozen_auth_pin()) | |
8968 | mdr->unfreeze_auth_pin(); | |
8969 | ||
8970 | if (!frozen_inode) { | |
8971 | srcdnl->get_inode()->add_waiter(CInode::WAIT_FROZEN, new C_MDS_RetryRequest(mdcache, mdr)); | |
8972 | return; | |
8973 | } | |
8974 | ||
8975 | /* | |
8976 | * set ambiguous auth for srci | |
8977 | * NOTE: we don't worry about ambiguous cache expire as we do | |
8978 | * with subtree migrations because all slaves will pin | |
8979 | * srcdn->get_inode() for duration of this rename. | |
8980 | */ | |
8981 | mdr->set_ambiguous_auth(srcdnl->get_inode()); | |
8982 | ||
8983 | // just mark the source inode as ambiguous auth if more than two MDS are involved. | |
8984 | // the master will send another OP_RENAMEPREP slave request later. | |
8985 | if (mdr->slave_request->witnesses.size() > 1) { | |
8986 | dout(10) << " set srci ambiguous auth; providing srcdn replica list" << dendl; | |
8987 | reply_witness = true; | |
8988 | } | |
8989 | ||
8990 | // make sure bystanders have received all lock related messages | |
8991 | for (set<mds_rank_t>::iterator p = srcdnrep.begin(); p != srcdnrep.end(); ++p) { | |
8992 | if (*p == mdr->slave_to_mds || | |
8993 | (mds->is_cluster_degraded() && | |
8994 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(*p))) | |
8995 | continue; | |
9f95a23c | 8996 | auto notify = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_RENAMENOTIFY); |
7c673cae FG |
8997 | mds->send_message_mds(notify, *p); |
8998 | mdr->more()->waiting_on_slave.insert(*p); | |
8999 | } | |
9000 | ||
9001 | // make sure clients have received all cap related messages | |
9002 | set<client_t> export_client_set; | |
9003 | mdcache->migrator->get_export_client_set(srcdnl->get_inode(), export_client_set); | |
9004 | ||
9005 | MDSGatherBuilder gather(g_ceph_context); | |
9006 | flush_client_sessions(export_client_set, gather); | |
9007 | if (gather.has_subs()) { | |
9008 | mdr->more()->waiting_on_slave.insert(MDS_RANK_NONE); | |
9009 | gather.set_finisher(new C_MDS_SlaveRenameSessionsFlushed(this, mdr)); | |
9010 | gather.activate(); | |
9011 | } | |
9012 | } | |
9013 | ||
9014 | // is witness list sufficient? | |
9015 | for (set<mds_rank_t>::iterator p = srcdnrep.begin(); p != srcdnrep.end(); ++p) { | |
9016 | if (*p == mdr->slave_to_mds || | |
9017 | mdr->slave_request->witnesses.count(*p)) continue; | |
9018 | dout(10) << " witness list insufficient; providing srcdn replica list" << dendl; | |
9019 | reply_witness = true; | |
9020 | break; | |
9021 | } | |
9022 | ||
9023 | if (reply_witness) { | |
11fdf7f2 | 9024 | ceph_assert(!srcdnrep.empty()); |
9f95a23c | 9025 | auto reply = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_RENAMEPREPACK); |
7c673cae FG |
9026 | reply->witnesses.swap(srcdnrep); |
9027 | mds->send_message_mds(reply, mdr->slave_to_mds); | |
91327a77 | 9028 | mdr->reset_slave_request(); |
7c673cae FG |
9029 | return; |
9030 | } | |
9031 | dout(10) << " witness list sufficient: includes all srcdn replicas" << dendl; | |
9032 | if (!mdr->more()->waiting_on_slave.empty()) { | |
9033 | dout(10) << " still waiting for rename notify acks from " | |
9034 | << mdr->more()->waiting_on_slave << dendl; | |
9035 | return; | |
9036 | } | |
9037 | } else if (srcdnl->is_primary() && srcdn->authority() != destdn->authority()) { | |
9038 | // set ambiguous auth for srci on witnesses | |
9039 | mdr->set_ambiguous_auth(srcdnl->get_inode()); | |
9040 | } | |
9041 | ||
9042 | // encode everything we'd need to roll this back... basically, just the original state. | |
9043 | rename_rollback rollback; | |
9044 | ||
9045 | rollback.reqid = mdr->reqid; | |
9046 | ||
9047 | rollback.orig_src.dirfrag = srcdn->get_dir()->dirfrag(); | |
9048 | rollback.orig_src.dirfrag_old_mtime = srcdn->get_dir()->get_projected_fnode()->fragstat.mtime; | |
9049 | rollback.orig_src.dirfrag_old_rctime = srcdn->get_dir()->get_projected_fnode()->rstat.rctime; | |
11fdf7f2 | 9050 | rollback.orig_src.dname = srcdn->get_name(); |
7c673cae FG |
9051 | if (srcdnl->is_primary()) |
9052 | rollback.orig_src.ino = srcdnl->get_inode()->ino(); | |
9053 | else { | |
11fdf7f2 | 9054 | ceph_assert(srcdnl->is_remote()); |
7c673cae FG |
9055 | rollback.orig_src.remote_ino = srcdnl->get_remote_ino(); |
9056 | rollback.orig_src.remote_d_type = srcdnl->get_remote_d_type(); | |
9057 | } | |
9058 | ||
9059 | rollback.orig_dest.dirfrag = destdn->get_dir()->dirfrag(); | |
9060 | rollback.orig_dest.dirfrag_old_mtime = destdn->get_dir()->get_projected_fnode()->fragstat.mtime; | |
9061 | rollback.orig_dest.dirfrag_old_rctime = destdn->get_dir()->get_projected_fnode()->rstat.rctime; | |
11fdf7f2 | 9062 | rollback.orig_dest.dname = destdn->get_name(); |
7c673cae FG |
9063 | if (destdnl->is_primary()) |
9064 | rollback.orig_dest.ino = destdnl->get_inode()->ino(); | |
9065 | else if (destdnl->is_remote()) { | |
9066 | rollback.orig_dest.remote_ino = destdnl->get_remote_ino(); | |
9067 | rollback.orig_dest.remote_d_type = destdnl->get_remote_d_type(); | |
9068 | } | |
9069 | ||
9070 | if (straydn) { | |
9071 | rollback.stray.dirfrag = straydn->get_dir()->dirfrag(); | |
9072 | rollback.stray.dirfrag_old_mtime = straydn->get_dir()->get_projected_fnode()->fragstat.mtime; | |
9073 | rollback.stray.dirfrag_old_rctime = straydn->get_dir()->get_projected_fnode()->rstat.rctime; | |
11fdf7f2 TL |
9074 | rollback.stray.dname = straydn->get_name(); |
9075 | } | |
9076 | if (mdr->slave_request->desti_snapbl.length()) { | |
9077 | CInode *oldin = destdnl->get_inode(); | |
9078 | if (oldin->snaprealm) { | |
9079 | encode(true, rollback.desti_snapbl); | |
9080 | oldin->encode_snap_blob(rollback.desti_snapbl); | |
9081 | } else { | |
9082 | encode(false, rollback.desti_snapbl); | |
9083 | } | |
9084 | } | |
9085 | if (mdr->slave_request->srci_snapbl.length()) { | |
9086 | if (srci->snaprealm) { | |
9087 | encode(true, rollback.srci_snapbl); | |
9088 | srci->encode_snap_blob(rollback.srci_snapbl); | |
9089 | } else { | |
9090 | encode(false, rollback.srci_snapbl); | |
9091 | } | |
7c673cae | 9092 | } |
11fdf7f2 TL |
9093 | encode(rollback, mdr->more()->rollback_bl); |
9094 | // FIXME: rollback snaprealm | |
7c673cae FG |
9095 | dout(20) << " rollback is " << mdr->more()->rollback_bl.length() << " bytes" << dendl; |
9096 | ||
9097 | // journal. | |
9098 | mdr->ls = mdlog->get_current_segment(); | |
9099 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_rename_prep", mdr->reqid, mdr->slave_to_mds, | |
9100 | ESlaveUpdate::OP_PREPARE, ESlaveUpdate::RENAME); | |
9101 | mdlog->start_entry(le); | |
9102 | le->rollback = mdr->more()->rollback_bl; | |
9103 | ||
9104 | bufferlist blah; // inode import data... obviously not used if we're the slave | |
9105 | _rename_prepare(mdr, &le->commit, &blah, srcdn, destdn, straydn); | |
9106 | ||
9107 | if (le->commit.empty()) { | |
9108 | dout(10) << " empty metablob, skipping journal" << dendl; | |
9109 | mdlog->cancel_entry(le); | |
9110 | mdr->ls = NULL; | |
9111 | _logged_slave_rename(mdr, srcdn, destdn, straydn); | |
9112 | } else { | |
e306af50 | 9113 | mdcache->add_uncommitted_slave(mdr->reqid, mdr->ls, mdr->slave_to_mds); |
7c673cae FG |
9114 | mdr->more()->slave_update_journaled = true; |
9115 | submit_mdlog_entry(le, new C_MDS_SlaveRenamePrep(this, mdr, srcdn, destdn, straydn), | |
9116 | mdr, __func__); | |
9117 | mdlog->flush(); | |
9118 | } | |
9119 | } | |
9120 | ||
9121 | void Server::_logged_slave_rename(MDRequestRef& mdr, | |
9122 | CDentry *srcdn, CDentry *destdn, CDentry *straydn) | |
9123 | { | |
9124 | dout(10) << "_logged_slave_rename " << *mdr << dendl; | |
9125 | ||
9126 | // prepare ack | |
9f95a23c | 9127 | ref_t<MMDSSlaveRequest> reply; |
7c673cae | 9128 | if (!mdr->aborted) { |
9f95a23c | 9129 | reply = make_message<MMDSSlaveRequest>(mdr->reqid, mdr->attempt, MMDSSlaveRequest::OP_RENAMEPREPACK); |
7c673cae FG |
9130 | if (!mdr->more()->slave_update_journaled) |
9131 | reply->mark_not_journaled(); | |
9132 | } | |
9133 | ||
9134 | CDentry::linkage_t *srcdnl = srcdn->get_linkage(); | |
7c673cae FG |
9135 | //CDentry::linkage_t *straydnl = straydn ? straydn->get_linkage() : 0; |
9136 | ||
9137 | // export srci? | |
9138 | if (srcdn->is_auth() && srcdnl->is_primary()) { | |
9139 | // set export bounds for CInode::encode_export() | |
11fdf7f2 | 9140 | if (reply) { |
9f95a23c | 9141 | std::vector<CDir*> bounds; |
11fdf7f2 TL |
9142 | if (srcdnl->get_inode()->is_dir()) { |
9143 | srcdnl->get_inode()->get_dirfrags(bounds); | |
9f95a23c TL |
9144 | for (const auto& bound : bounds) { |
9145 | bound->state_set(CDir::STATE_EXPORTBOUND); | |
9146 | } | |
11fdf7f2 | 9147 | } |
7c673cae | 9148 | |
11fdf7f2 TL |
9149 | map<client_t,entity_inst_t> exported_client_map; |
9150 | map<client_t, client_metadata_t> exported_client_metadata_map; | |
9151 | bufferlist inodebl; | |
9152 | mdcache->migrator->encode_export_inode(srcdnl->get_inode(), inodebl, | |
9153 | exported_client_map, | |
9154 | exported_client_metadata_map); | |
7c673cae | 9155 | |
9f95a23c TL |
9156 | for (const auto& bound : bounds) { |
9157 | bound->state_clear(CDir::STATE_EXPORTBOUND); | |
9158 | } | |
7c673cae | 9159 | |
11fdf7f2 TL |
9160 | encode(exported_client_map, reply->inode_export, mds->mdsmap->get_up_features()); |
9161 | encode(exported_client_metadata_map, reply->inode_export); | |
7c673cae FG |
9162 | reply->inode_export.claim_append(inodebl); |
9163 | reply->inode_export_v = srcdnl->get_inode()->inode.version; | |
9164 | } | |
9165 | ||
9166 | // remove mdr auth pin | |
9167 | mdr->auth_unpin(srcdnl->get_inode()); | |
9168 | mdr->more()->is_inode_exporter = true; | |
9169 | ||
9170 | if (srcdnl->get_inode()->is_dirty()) | |
9171 | srcdnl->get_inode()->mark_clean(); | |
9172 | ||
9173 | dout(10) << " exported srci " << *srcdnl->get_inode() << dendl; | |
9174 | } | |
9175 | ||
9176 | // apply | |
9177 | _rename_apply(mdr, srcdn, destdn, straydn); | |
11fdf7f2 TL |
9178 | |
9179 | CDentry::linkage_t *destdnl = destdn->get_linkage(); | |
7c673cae FG |
9180 | |
9181 | // bump popularity | |
11fdf7f2 | 9182 | mds->balancer->hit_dir(srcdn->get_dir(), META_POP_IWR); |
7c673cae | 9183 | if (destdnl->get_inode() && destdnl->get_inode()->is_auth()) |
11fdf7f2 | 9184 | mds->balancer->hit_inode(destdnl->get_inode(), META_POP_IWR); |
7c673cae FG |
9185 | |
9186 | // done. | |
91327a77 | 9187 | mdr->reset_slave_request(); |
7c673cae FG |
9188 | mdr->straydn = 0; |
9189 | ||
9190 | if (reply) { | |
9191 | mds->send_message_mds(reply, mdr->slave_to_mds); | |
9192 | } else { | |
11fdf7f2 | 9193 | ceph_assert(mdr->aborted); |
7c673cae FG |
9194 | dout(10) << " abort flag set, finishing" << dendl; |
9195 | mdcache->request_finish(mdr); | |
9196 | } | |
9197 | } | |
9198 | ||
9199 | void Server::_commit_slave_rename(MDRequestRef& mdr, int r, | |
9200 | CDentry *srcdn, CDentry *destdn, CDentry *straydn) | |
9201 | { | |
9202 | dout(10) << "_commit_slave_rename " << *mdr << " r=" << r << dendl; | |
9203 | ||
f64942e4 AA |
9204 | CInode *in = destdn->get_linkage()->get_inode(); |
9205 | ||
9206 | inodeno_t migrated_stray; | |
9207 | if (srcdn->is_auth() && srcdn->get_dir()->inode->is_stray()) | |
9208 | migrated_stray = in->ino(); | |
7c673cae | 9209 | |
11fdf7f2 | 9210 | MDSContext::vec finished; |
7c673cae FG |
9211 | if (r == 0) { |
9212 | // unfreeze+singleauth inode | |
9213 | // hmm, do i really need to delay this? | |
9214 | if (mdr->more()->is_inode_exporter) { | |
7c673cae FG |
9215 | // drop our pins |
9216 | // we exported, clear out any xlocks that we moved to another MDS | |
7c673cae | 9217 | |
11fdf7f2 TL |
9218 | for (auto i = mdr->locks.lower_bound(&in->versionlock); |
9219 | i != mdr->locks.end(); ) { | |
9220 | SimpleLock *lock = i->lock; | |
9221 | if (lock->get_parent() != in) | |
9222 | break; | |
7c673cae | 9223 | // we only care about xlocks on the exported inode |
11fdf7f2 TL |
9224 | if (i->is_xlock() && !lock->is_locallock()) |
9225 | mds->locker->xlock_export(i++, mdr.get()); | |
9226 | else | |
9227 | ++i; | |
7c673cae FG |
9228 | } |
9229 | ||
9230 | map<client_t,Capability::Import> peer_imported; | |
11fdf7f2 TL |
9231 | auto bp = mdr->more()->inode_import.cbegin(); |
9232 | decode(peer_imported, bp); | |
7c673cae | 9233 | |
f64942e4 | 9234 | dout(10) << " finishing inode export on " << *in << dendl; |
11fdf7f2 | 9235 | mdcache->migrator->finish_export_inode(in, mdr->slave_to_mds, peer_imported, finished); |
7c673cae FG |
9236 | mds->queue_waiters(finished); // this includes SINGLEAUTH waiters. |
9237 | ||
9238 | // unfreeze | |
11fdf7f2 | 9239 | ceph_assert(in->is_frozen_inode()); |
f64942e4 | 9240 | in->unfreeze_inode(finished); |
7c673cae FG |
9241 | } |
9242 | ||
9243 | // singleauth | |
9244 | if (mdr->more()->is_ambiguous_auth) { | |
9245 | mdr->more()->rename_inode->clear_ambiguous_auth(finished); | |
9246 | mdr->more()->is_ambiguous_auth = false; | |
9247 | } | |
9248 | ||
31f18b77 FG |
9249 | if (straydn && mdr->more()->slave_update_journaled) { |
9250 | CInode *strayin = straydn->get_projected_linkage()->get_inode(); | |
9251 | if (strayin && !strayin->snaprealm) | |
9252 | mdcache->clear_dirty_bits_for_stray(strayin); | |
9253 | } | |
7c673cae FG |
9254 | |
9255 | mds->queue_waiters(finished); | |
9256 | mdr->cleanup(); | |
9257 | ||
9258 | if (mdr->more()->slave_update_journaled) { | |
9259 | // write a commit to the journal | |
9260 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_rename_commit", mdr->reqid, | |
9261 | mdr->slave_to_mds, ESlaveUpdate::OP_COMMIT, | |
9262 | ESlaveUpdate::RENAME); | |
9263 | mdlog->start_entry(le); | |
9264 | submit_mdlog_entry(le, new C_MDS_CommittedSlave(this, mdr), mdr, __func__); | |
9265 | mdlog->flush(); | |
9266 | } else { | |
9267 | _committed_slave(mdr); | |
9268 | } | |
9269 | } else { | |
9270 | ||
9271 | // abort | |
9272 | // rollback_bl may be empty if we froze the inode but had to provide an expanded | |
9273 | // witness list from the master, and they failed before we tried prep again. | |
9274 | if (mdr->more()->rollback_bl.length()) { | |
9275 | if (mdr->more()->is_inode_exporter) { | |
f64942e4 AA |
9276 | dout(10) << " reversing inode export of " << *in << dendl; |
9277 | in->abort_export(); | |
7c673cae FG |
9278 | } |
9279 | if (mdcache->is_ambiguous_slave_update(mdr->reqid, mdr->slave_to_mds)) { | |
9280 | mdcache->remove_ambiguous_slave_update(mdr->reqid, mdr->slave_to_mds); | |
9281 | // rollback but preserve the slave request | |
9282 | do_rename_rollback(mdr->more()->rollback_bl, mdr->slave_to_mds, mdr, false); | |
9283 | mdr->more()->rollback_bl.clear(); | |
9284 | } else | |
9285 | do_rename_rollback(mdr->more()->rollback_bl, mdr->slave_to_mds, mdr, true); | |
9286 | } else { | |
9287 | dout(10) << " rollback_bl empty, not rollback back rename (master failed after getting extra witnesses?)" << dendl; | |
9288 | // singleauth | |
9289 | if (mdr->more()->is_ambiguous_auth) { | |
9290 | if (srcdn->is_auth()) | |
9291 | mdr->more()->rename_inode->unfreeze_inode(finished); | |
9292 | ||
9293 | mdr->more()->rename_inode->clear_ambiguous_auth(finished); | |
9294 | mdr->more()->is_ambiguous_auth = false; | |
9295 | } | |
9296 | mds->queue_waiters(finished); | |
9297 | mdcache->request_finish(mdr); | |
9298 | } | |
9299 | } | |
f64942e4 AA |
9300 | |
9301 | if (migrated_stray && mds->is_stopping()) | |
9302 | mdcache->shutdown_export_stray_finish(migrated_stray); | |
7c673cae FG |
9303 | } |
9304 | ||
9305 | void _rollback_repair_dir(MutationRef& mut, CDir *dir, rename_rollback::drec &r, utime_t ctime, | |
9306 | bool isdir, int linkunlink, nest_info_t &rstat) | |
9307 | { | |
9308 | fnode_t *pf; | |
9309 | pf = dir->project_fnode(); | |
9310 | mut->add_projected_fnode(dir); | |
9311 | pf->version = dir->pre_dirty(); | |
9312 | ||
9313 | if (isdir) { | |
9314 | pf->fragstat.nsubdirs += linkunlink; | |
9315 | } else { | |
9316 | pf->fragstat.nfiles += linkunlink; | |
9317 | } | |
9318 | if (r.ino) { | |
9319 | pf->rstat.rbytes += linkunlink * rstat.rbytes; | |
9320 | pf->rstat.rfiles += linkunlink * rstat.rfiles; | |
9321 | pf->rstat.rsubdirs += linkunlink * rstat.rsubdirs; | |
11fdf7f2 | 9322 | pf->rstat.rsnaps += linkunlink * rstat.rsnaps; |
7c673cae FG |
9323 | } |
9324 | if (pf->fragstat.mtime == ctime) { | |
9325 | pf->fragstat.mtime = r.dirfrag_old_mtime; | |
9326 | if (pf->rstat.rctime == ctime) | |
9327 | pf->rstat.rctime = r.dirfrag_old_rctime; | |
9328 | } | |
9329 | mut->add_updated_lock(&dir->get_inode()->filelock); | |
9330 | mut->add_updated_lock(&dir->get_inode()->nestlock); | |
9331 | } | |
9332 | ||
9333 | struct C_MDS_LoggedRenameRollback : public ServerLogContext { | |
9334 | MutationRef mut; | |
9335 | CDentry *srcdn; | |
9336 | version_t srcdnpv; | |
9337 | CDentry *destdn; | |
9338 | CDentry *straydn; | |
9f95a23c | 9339 | map<client_t,ref_t<MClientSnap>> splits[2]; |
7c673cae FG |
9340 | bool finish_mdr; |
9341 | C_MDS_LoggedRenameRollback(Server *s, MutationRef& m, MDRequestRef& r, | |
11fdf7f2 | 9342 | CDentry *sd, version_t pv, CDentry *dd, CDentry *st, |
9f95a23c | 9343 | map<client_t,ref_t<MClientSnap>> _splits[2], bool f) : |
7c673cae | 9344 | ServerLogContext(s, r), mut(m), srcdn(sd), srcdnpv(pv), destdn(dd), |
11fdf7f2 TL |
9345 | straydn(st), finish_mdr(f) { |
9346 | splits[0].swap(_splits[0]); | |
9347 | splits[1].swap(_splits[1]); | |
9348 | } | |
7c673cae FG |
9349 | void finish(int r) override { |
9350 | server->_rename_rollback_finish(mut, mdr, srcdn, srcdnpv, | |
11fdf7f2 | 9351 | destdn, straydn, splits, finish_mdr); |
7c673cae FG |
9352 | } |
9353 | }; | |
9354 | ||
9355 | void Server::do_rename_rollback(bufferlist &rbl, mds_rank_t master, MDRequestRef& mdr, | |
9356 | bool finish_mdr) | |
9357 | { | |
9358 | rename_rollback rollback; | |
11fdf7f2 TL |
9359 | auto p = rbl.cbegin(); |
9360 | decode(rollback, p); | |
7c673cae FG |
9361 | |
9362 | dout(10) << "do_rename_rollback on " << rollback.reqid << dendl; | |
9363 | // need to finish this update before sending resolve to claim the subtree | |
9364 | mdcache->add_rollback(rollback.reqid, master); | |
9365 | ||
9366 | MutationRef mut(new MutationImpl(nullptr, utime_t(), rollback.reqid)); | |
9367 | mut->ls = mds->mdlog->get_current_segment(); | |
9368 | ||
9369 | CDentry *srcdn = NULL; | |
9370 | CDir *srcdir = mdcache->get_dirfrag(rollback.orig_src.dirfrag); | |
9371 | if (!srcdir) | |
9372 | srcdir = mdcache->get_dirfrag(rollback.orig_src.dirfrag.ino, rollback.orig_src.dname); | |
9373 | if (srcdir) { | |
9374 | dout(10) << " srcdir " << *srcdir << dendl; | |
9375 | srcdn = srcdir->lookup(rollback.orig_src.dname); | |
9376 | if (srcdn) { | |
9377 | dout(10) << " srcdn " << *srcdn << dendl; | |
11fdf7f2 | 9378 | ceph_assert(srcdn->get_linkage()->is_null()); |
7c673cae FG |
9379 | } else |
9380 | dout(10) << " srcdn not found" << dendl; | |
9381 | } else | |
9382 | dout(10) << " srcdir not found" << dendl; | |
9383 | ||
9384 | CDentry *destdn = NULL; | |
9385 | CDir *destdir = mdcache->get_dirfrag(rollback.orig_dest.dirfrag); | |
9386 | if (!destdir) | |
9387 | destdir = mdcache->get_dirfrag(rollback.orig_dest.dirfrag.ino, rollback.orig_dest.dname); | |
9388 | if (destdir) { | |
9389 | dout(10) << " destdir " << *destdir << dendl; | |
9390 | destdn = destdir->lookup(rollback.orig_dest.dname); | |
9391 | if (destdn) | |
9392 | dout(10) << " destdn " << *destdn << dendl; | |
9393 | else | |
9394 | dout(10) << " destdn not found" << dendl; | |
9395 | } else | |
9396 | dout(10) << " destdir not found" << dendl; | |
9397 | ||
9398 | CInode *in = NULL; | |
9399 | if (rollback.orig_src.ino) { | |
9400 | in = mdcache->get_inode(rollback.orig_src.ino); | |
9401 | if (in && in->is_dir()) | |
11fdf7f2 | 9402 | ceph_assert(srcdn && destdn); |
7c673cae FG |
9403 | } else |
9404 | in = mdcache->get_inode(rollback.orig_src.remote_ino); | |
9405 | ||
9406 | CDir *straydir = NULL; | |
9407 | CDentry *straydn = NULL; | |
9408 | if (rollback.stray.dirfrag.ino) { | |
9409 | straydir = mdcache->get_dirfrag(rollback.stray.dirfrag); | |
9410 | if (straydir) { | |
9411 | dout(10) << "straydir " << *straydir << dendl; | |
9412 | straydn = straydir->lookup(rollback.stray.dname); | |
9413 | if (straydn) { | |
9414 | dout(10) << " straydn " << *straydn << dendl; | |
11fdf7f2 | 9415 | ceph_assert(straydn->get_linkage()->is_primary()); |
7c673cae FG |
9416 | } else |
9417 | dout(10) << " straydn not found" << dendl; | |
9418 | } else | |
9419 | dout(10) << "straydir not found" << dendl; | |
9420 | } | |
9421 | ||
9422 | CInode *target = NULL; | |
9423 | if (rollback.orig_dest.ino) { | |
9424 | target = mdcache->get_inode(rollback.orig_dest.ino); | |
9425 | if (target) | |
11fdf7f2 | 9426 | ceph_assert(destdn && straydn); |
7c673cae FG |
9427 | } else if (rollback.orig_dest.remote_ino) |
9428 | target = mdcache->get_inode(rollback.orig_dest.remote_ino); | |
9429 | ||
9430 | // can't use is_auth() in the resolve stage | |
9431 | mds_rank_t whoami = mds->get_nodeid(); | |
9432 | // slave | |
11fdf7f2 TL |
9433 | ceph_assert(!destdn || destdn->authority().first != whoami); |
9434 | ceph_assert(!straydn || straydn->authority().first != whoami); | |
7c673cae FG |
9435 | |
9436 | bool force_journal_src = false; | |
9437 | bool force_journal_dest = false; | |
9438 | if (in && in->is_dir() && srcdn->authority().first != whoami) | |
9439 | force_journal_src = _need_force_journal(in, false); | |
9440 | if (in && target && target->is_dir()) | |
9441 | force_journal_dest = _need_force_journal(in, true); | |
9442 | ||
9443 | version_t srcdnpv = 0; | |
9444 | // repair src | |
9445 | if (srcdn) { | |
9446 | if (srcdn->authority().first == whoami) | |
9447 | srcdnpv = srcdn->pre_dirty(); | |
9448 | if (rollback.orig_src.ino) { | |
11fdf7f2 | 9449 | ceph_assert(in); |
7c673cae FG |
9450 | srcdn->push_projected_linkage(in); |
9451 | } else | |
9452 | srcdn->push_projected_linkage(rollback.orig_src.remote_ino, | |
9453 | rollback.orig_src.remote_d_type); | |
9454 | } | |
9455 | ||
9f95a23c | 9456 | map<client_t,ref_t<MClientSnap>> splits[2]; |
11fdf7f2 TL |
9457 | |
9458 | CInode::mempool_inode *pip = nullptr; | |
7c673cae | 9459 | if (in) { |
11fdf7f2 TL |
9460 | bool projected; |
9461 | if (in->get_projected_parent_dn()->authority().first == whoami) { | |
94b18763 | 9462 | auto &pi = in->project_inode(); |
94b18763 | 9463 | pip = &pi.inode; |
11fdf7f2 TL |
9464 | mut->add_projected_inode(in); |
9465 | pip->version = in->pre_dirty(); | |
9466 | projected = true; | |
9467 | } else { | |
94b18763 | 9468 | pip = in->get_projected_inode(); |
11fdf7f2 TL |
9469 | projected = false; |
9470 | } | |
94b18763 | 9471 | if (pip->ctime == rollback.ctime) |
91327a77 | 9472 | pip->ctime = rollback.orig_src.old_ctime; |
11fdf7f2 TL |
9473 | |
9474 | if (rollback.srci_snapbl.length() && in->snaprealm) { | |
9475 | bool hadrealm; | |
9476 | auto p = rollback.srci_snapbl.cbegin(); | |
9477 | decode(hadrealm, p); | |
9478 | if (hadrealm) { | |
9479 | if (projected && !mds->is_resolve()) { | |
9480 | sr_t *new_srnode = new sr_t(); | |
9481 | decode(*new_srnode, p); | |
9482 | in->project_snaprealm(new_srnode); | |
9483 | } else | |
9484 | decode(in->snaprealm->srnode, p); | |
9485 | } else { | |
9486 | SnapRealm *realm; | |
9487 | if (rollback.orig_src.ino) { | |
9488 | ceph_assert(srcdir); | |
9489 | realm = srcdir->get_inode()->find_snaprealm(); | |
9490 | } else { | |
9491 | realm = in->snaprealm->parent; | |
9492 | } | |
9493 | if (!mds->is_resolve()) | |
9494 | mdcache->prepare_realm_merge(in->snaprealm, realm, splits[0]); | |
9495 | if (projected) | |
9496 | in->project_snaprealm(NULL); | |
9497 | else | |
9498 | in->snaprealm->merge_to(realm); | |
9499 | } | |
9500 | } | |
7c673cae FG |
9501 | } |
9502 | ||
9503 | if (srcdn && srcdn->authority().first == whoami) { | |
9504 | nest_info_t blah; | |
9505 | _rollback_repair_dir(mut, srcdir, rollback.orig_src, rollback.ctime, | |
94b18763 | 9506 | in ? in->is_dir() : false, 1, pip ? pip->accounted_rstat : blah); |
7c673cae FG |
9507 | } |
9508 | ||
9509 | // repair dest | |
9510 | if (destdn) { | |
9511 | if (rollback.orig_dest.ino && target) { | |
9512 | destdn->push_projected_linkage(target); | |
9513 | } else if (rollback.orig_dest.remote_ino) { | |
9514 | destdn->push_projected_linkage(rollback.orig_dest.remote_ino, | |
9515 | rollback.orig_dest.remote_d_type); | |
9516 | } else { | |
9517 | // the dentry will be trimmed soon, it's ok to have wrong linkage | |
9518 | if (rollback.orig_dest.ino) | |
11fdf7f2 | 9519 | ceph_assert(mds->is_resolve()); |
7c673cae FG |
9520 | destdn->push_projected_linkage(); |
9521 | } | |
9522 | } | |
9523 | ||
9524 | if (straydn) | |
9525 | straydn->push_projected_linkage(); | |
9526 | ||
9527 | if (target) { | |
11fdf7f2 TL |
9528 | bool projected; |
9529 | CInode::mempool_inode *ti = nullptr; | |
9530 | if (target->get_projected_parent_dn()->authority().first == whoami) { | |
94b18763 | 9531 | auto &pi = target->project_inode(); |
94b18763 | 9532 | ti = &pi.inode; |
11fdf7f2 TL |
9533 | mut->add_projected_inode(target); |
9534 | ti->version = target->pre_dirty(); | |
9535 | projected = true; | |
9536 | } else { | |
7c673cae | 9537 | ti = target->get_projected_inode(); |
11fdf7f2 TL |
9538 | projected = false; |
9539 | } | |
7c673cae | 9540 | if (ti->ctime == rollback.ctime) |
91327a77 | 9541 | ti->ctime = rollback.orig_dest.old_ctime; |
7c673cae FG |
9542 | if (MDS_INO_IS_STRAY(rollback.orig_src.dirfrag.ino)) { |
9543 | if (MDS_INO_IS_STRAY(rollback.orig_dest.dirfrag.ino)) | |
11fdf7f2 | 9544 | ceph_assert(!rollback.orig_dest.ino && !rollback.orig_dest.remote_ino); |
7c673cae | 9545 | else |
11fdf7f2 | 9546 | ceph_assert(rollback.orig_dest.remote_ino && |
7c673cae FG |
9547 | rollback.orig_dest.remote_ino == rollback.orig_src.ino); |
9548 | } else | |
9549 | ti->nlink++; | |
11fdf7f2 TL |
9550 | |
9551 | if (rollback.desti_snapbl.length() && target->snaprealm) { | |
9552 | bool hadrealm; | |
9553 | auto p = rollback.desti_snapbl.cbegin(); | |
9554 | decode(hadrealm, p); | |
9555 | if (hadrealm) { | |
9556 | if (projected && !mds->is_resolve()) { | |
9557 | sr_t *new_srnode = new sr_t(); | |
9558 | decode(*new_srnode, p); | |
9559 | target->project_snaprealm(new_srnode); | |
9560 | } else | |
9561 | decode(target->snaprealm->srnode, p); | |
9562 | } else { | |
9563 | SnapRealm *realm; | |
9564 | if (rollback.orig_dest.ino) { | |
9565 | ceph_assert(destdir); | |
9566 | realm = destdir->get_inode()->find_snaprealm(); | |
9567 | } else { | |
9568 | realm = target->snaprealm->parent; | |
9569 | } | |
9570 | if (!mds->is_resolve()) | |
9571 | mdcache->prepare_realm_merge(target->snaprealm, realm, splits[1]); | |
9572 | if (projected) | |
9573 | target->project_snaprealm(NULL); | |
9574 | else | |
9575 | target->snaprealm->merge_to(realm); | |
9576 | } | |
9577 | } | |
7c673cae FG |
9578 | } |
9579 | ||
9580 | if (srcdn) | |
9581 | dout(0) << " srcdn back to " << *srcdn << dendl; | |
9582 | if (in) | |
9583 | dout(0) << " srci back to " << *in << dendl; | |
9584 | if (destdn) | |
9585 | dout(0) << " destdn back to " << *destdn << dendl; | |
9586 | if (target) | |
9587 | dout(0) << " desti back to " << *target << dendl; | |
9588 | ||
9589 | // journal it | |
9590 | ESlaveUpdate *le = new ESlaveUpdate(mdlog, "slave_rename_rollback", rollback.reqid, master, | |
9591 | ESlaveUpdate::OP_ROLLBACK, ESlaveUpdate::RENAME); | |
9592 | mdlog->start_entry(le); | |
9593 | ||
9594 | if (srcdn && (srcdn->authority().first == whoami || force_journal_src)) { | |
9595 | le->commit.add_dir_context(srcdir); | |
9596 | if (rollback.orig_src.ino) | |
9597 | le->commit.add_primary_dentry(srcdn, 0, true); | |
9598 | else | |
9599 | le->commit.add_remote_dentry(srcdn, true); | |
9600 | } | |
9601 | ||
9602 | if (!rollback.orig_src.ino && // remote linkage | |
9603 | in && in->authority().first == whoami) { | |
9604 | le->commit.add_dir_context(in->get_projected_parent_dir()); | |
9605 | le->commit.add_primary_dentry(in->get_projected_parent_dn(), in, true); | |
9606 | } | |
9607 | ||
9608 | if (force_journal_dest) { | |
11fdf7f2 | 9609 | ceph_assert(rollback.orig_dest.ino); |
7c673cae FG |
9610 | le->commit.add_dir_context(destdir); |
9611 | le->commit.add_primary_dentry(destdn, 0, true); | |
9612 | } | |
9613 | ||
9614 | // slave: no need to journal straydn | |
9615 | ||
9616 | if (target && target != in && target->authority().first == whoami) { | |
11fdf7f2 | 9617 | ceph_assert(rollback.orig_dest.remote_ino); |
7c673cae FG |
9618 | le->commit.add_dir_context(target->get_projected_parent_dir()); |
9619 | le->commit.add_primary_dentry(target->get_projected_parent_dn(), target, true); | |
9620 | } | |
9621 | ||
9622 | if (in && in->is_dir() && (srcdn->authority().first == whoami || force_journal_src)) { | |
9623 | dout(10) << " noting renamed dir ino " << in->ino() << " in metablob" << dendl; | |
9624 | le->commit.renamed_dirino = in->ino(); | |
9625 | if (srcdn->authority().first == whoami) { | |
9f95a23c TL |
9626 | auto&& ls = in->get_dirfrags(); |
9627 | for (const auto& dir : ls) { | |
7c673cae FG |
9628 | if (!dir->is_auth()) |
9629 | le->commit.renamed_dir_frags.push_back(dir->get_frag()); | |
9630 | } | |
9631 | dout(10) << " noting renamed dir open frags " << le->commit.renamed_dir_frags << dendl; | |
9632 | } | |
9633 | } else if (force_journal_dest) { | |
9634 | dout(10) << " noting rename target ino " << target->ino() << " in metablob" << dendl; | |
9635 | le->commit.renamed_dirino = target->ino(); | |
9636 | } | |
9637 | ||
9638 | if (target && target->is_dir()) { | |
11fdf7f2 | 9639 | ceph_assert(destdn); |
7c673cae FG |
9640 | mdcache->project_subtree_rename(target, straydir, destdir); |
9641 | } | |
9642 | ||
9643 | if (in && in->is_dir()) { | |
11fdf7f2 | 9644 | ceph_assert(srcdn); |
7c673cae FG |
9645 | mdcache->project_subtree_rename(in, destdir, srcdir); |
9646 | } | |
9647 | ||
9648 | if (mdr && !mdr->more()->slave_update_journaled) { | |
11fdf7f2 | 9649 | ceph_assert(le->commit.empty()); |
7c673cae FG |
9650 | mdlog->cancel_entry(le); |
9651 | mut->ls = NULL; | |
11fdf7f2 | 9652 | _rename_rollback_finish(mut, mdr, srcdn, srcdnpv, destdn, straydn, splits, finish_mdr); |
7c673cae | 9653 | } else { |
11fdf7f2 | 9654 | ceph_assert(!le->commit.empty()); |
7c673cae FG |
9655 | if (mdr) |
9656 | mdr->more()->slave_update_journaled = false; | |
11fdf7f2 TL |
9657 | MDSLogContextBase *fin = new C_MDS_LoggedRenameRollback(this, mut, mdr, |
9658 | srcdn, srcdnpv, destdn, straydn, | |
9659 | splits, finish_mdr); | |
7c673cae FG |
9660 | submit_mdlog_entry(le, fin, mdr, __func__); |
9661 | mdlog->flush(); | |
9662 | } | |
9663 | } | |
9664 | ||
9665 | void Server::_rename_rollback_finish(MutationRef& mut, MDRequestRef& mdr, CDentry *srcdn, | |
11fdf7f2 | 9666 | version_t srcdnpv, CDentry *destdn, CDentry *straydn, |
9f95a23c | 9667 | map<client_t,ref_t<MClientSnap>> splits[2], bool finish_mdr) |
7c673cae FG |
9668 | { |
9669 | dout(10) << "_rename_rollback_finish " << mut->reqid << dendl; | |
9670 | ||
9671 | if (straydn) { | |
9672 | straydn->get_dir()->unlink_inode(straydn); | |
9673 | straydn->pop_projected_linkage(); | |
9674 | } | |
9675 | if (destdn) { | |
9676 | destdn->get_dir()->unlink_inode(destdn); | |
9677 | destdn->pop_projected_linkage(); | |
9678 | } | |
9679 | if (srcdn) { | |
9680 | srcdn->pop_projected_linkage(); | |
11fdf7f2 | 9681 | if (srcdn->authority().first == mds->get_nodeid()) { |
7c673cae | 9682 | srcdn->mark_dirty(srcdnpv, mut->ls); |
11fdf7f2 TL |
9683 | if (srcdn->get_linkage()->is_primary()) |
9684 | srcdn->get_linkage()->get_inode()->state_set(CInode::STATE_AUTH); | |
9685 | } | |
7c673cae FG |
9686 | } |
9687 | ||
9688 | mut->apply(); | |
9689 | ||
9690 | if (srcdn && srcdn->get_linkage()->is_primary()) { | |
9691 | CInode *in = srcdn->get_linkage()->get_inode(); | |
7c673cae | 9692 | if (in && in->is_dir()) { |
11fdf7f2 | 9693 | ceph_assert(destdn); |
7c673cae FG |
9694 | mdcache->adjust_subtree_after_rename(in, destdn->get_dir(), true); |
9695 | } | |
9696 | } | |
9697 | ||
9698 | if (destdn) { | |
9699 | CInode *oldin = destdn->get_linkage()->get_inode(); | |
9700 | // update subtree map? | |
9701 | if (oldin && oldin->is_dir()) { | |
11fdf7f2 | 9702 | ceph_assert(straydn); |
7c673cae FG |
9703 | mdcache->adjust_subtree_after_rename(oldin, straydn->get_dir(), true); |
9704 | } | |
9705 | } | |
9706 | ||
9707 | if (mds->is_resolve()) { | |
9708 | CDir *root = NULL; | |
9709 | if (straydn) | |
9710 | root = mdcache->get_subtree_root(straydn->get_dir()); | |
9711 | else if (destdn) | |
9712 | root = mdcache->get_subtree_root(destdn->get_dir()); | |
9713 | if (root) | |
9714 | mdcache->try_trim_non_auth_subtree(root); | |
11fdf7f2 TL |
9715 | } else { |
9716 | mdcache->send_snaps(splits[1]); | |
9717 | mdcache->send_snaps(splits[0]); | |
7c673cae FG |
9718 | } |
9719 | ||
9720 | if (mdr) { | |
11fdf7f2 | 9721 | MDSContext::vec finished; |
7c673cae FG |
9722 | if (mdr->more()->is_ambiguous_auth) { |
9723 | if (srcdn->is_auth()) | |
9724 | mdr->more()->rename_inode->unfreeze_inode(finished); | |
9725 | ||
9726 | mdr->more()->rename_inode->clear_ambiguous_auth(finished); | |
9727 | mdr->more()->is_ambiguous_auth = false; | |
9728 | } | |
9729 | mds->queue_waiters(finished); | |
9730 | if (finish_mdr || mdr->aborted) | |
9731 | mdcache->request_finish(mdr); | |
9732 | else | |
9733 | mdr->more()->slave_rolling_back = false; | |
9734 | } | |
9735 | ||
e306af50 | 9736 | mdcache->finish_rollback(mut->reqid, mdr); |
7c673cae FG |
9737 | |
9738 | mut->cleanup(); | |
9739 | } | |
9740 | ||
9f95a23c | 9741 | void Server::handle_slave_rename_prep_ack(MDRequestRef& mdr, const cref_t<MMDSSlaveRequest> &ack) |
7c673cae FG |
9742 | { |
9743 | dout(10) << "handle_slave_rename_prep_ack " << *mdr | |
9744 | << " witnessed by " << ack->get_source() | |
9745 | << " " << *ack << dendl; | |
9746 | mds_rank_t from = mds_rank_t(ack->get_source().num()); | |
9747 | ||
9748 | // note slave | |
9749 | mdr->more()->slaves.insert(from); | |
9750 | if (mdr->more()->srcdn_auth_mds == from && | |
9751 | mdr->more()->is_remote_frozen_authpin && | |
9752 | !mdr->more()->is_ambiguous_auth) { | |
9753 | mdr->set_ambiguous_auth(mdr->more()->rename_inode); | |
9754 | } | |
9755 | ||
9756 | // witnessed? or add extra witnesses? | |
11fdf7f2 | 9757 | ceph_assert(mdr->more()->witnessed.count(from) == 0); |
31f18b77 FG |
9758 | if (ack->is_interrupted()) { |
9759 | dout(10) << " slave request interrupted, noop" << dendl; | |
9760 | } else if (ack->witnesses.empty()) { | |
7c673cae FG |
9761 | mdr->more()->witnessed.insert(from); |
9762 | if (!ack->is_not_journaled()) | |
9763 | mdr->more()->has_journaled_slaves = true; | |
9764 | } else { | |
9765 | dout(10) << " extra witnesses (srcdn replicas) are " << ack->witnesses << dendl; | |
11fdf7f2 | 9766 | mdr->more()->extra_witnesses = ack->witnesses; |
7c673cae FG |
9767 | mdr->more()->extra_witnesses.erase(mds->get_nodeid()); // not me! |
9768 | } | |
9769 | ||
9770 | // srci import? | |
9771 | if (ack->inode_export.length()) { | |
9772 | dout(10) << " got srci import" << dendl; | |
11fdf7f2 | 9773 | mdr->more()->inode_import.share(ack->inode_export); |
7c673cae FG |
9774 | mdr->more()->inode_import_v = ack->inode_export_v; |
9775 | } | |
9776 | ||
9777 | // remove from waiting list | |
11fdf7f2 | 9778 | ceph_assert(mdr->more()->waiting_on_slave.count(from)); |
7c673cae FG |
9779 | mdr->more()->waiting_on_slave.erase(from); |
9780 | ||
9781 | if (mdr->more()->waiting_on_slave.empty()) | |
9782 | dispatch_client_request(mdr); // go again! | |
9783 | else | |
9784 | dout(10) << "still waiting on slaves " << mdr->more()->waiting_on_slave << dendl; | |
9785 | } | |
9786 | ||
9f95a23c | 9787 | void Server::handle_slave_rename_notify_ack(MDRequestRef& mdr, const cref_t<MMDSSlaveRequest> &ack) |
7c673cae FG |
9788 | { |
9789 | dout(10) << "handle_slave_rename_notify_ack " << *mdr << " from mds." | |
9790 | << ack->get_source() << dendl; | |
11fdf7f2 | 9791 | ceph_assert(mdr->is_slave()); |
7c673cae FG |
9792 | mds_rank_t from = mds_rank_t(ack->get_source().num()); |
9793 | ||
9794 | if (mdr->more()->waiting_on_slave.count(from)) { | |
9795 | mdr->more()->waiting_on_slave.erase(from); | |
9796 | ||
9797 | if (mdr->more()->waiting_on_slave.empty()) { | |
9798 | if (mdr->slave_request) | |
9799 | dispatch_slave_request(mdr); | |
9800 | } else | |
9801 | dout(10) << " still waiting for rename notify acks from " | |
9802 | << mdr->more()->waiting_on_slave << dendl; | |
9803 | } | |
9804 | } | |
9805 | ||
9806 | void Server::_slave_rename_sessions_flushed(MDRequestRef& mdr) | |
9807 | { | |
9808 | dout(10) << "_slave_rename_sessions_flushed " << *mdr << dendl; | |
9809 | ||
9810 | if (mdr->more()->waiting_on_slave.count(MDS_RANK_NONE)) { | |
9811 | mdr->more()->waiting_on_slave.erase(MDS_RANK_NONE); | |
9812 | ||
9813 | if (mdr->more()->waiting_on_slave.empty()) { | |
9814 | if (mdr->slave_request) | |
9815 | dispatch_slave_request(mdr); | |
9816 | } else | |
9817 | dout(10) << " still waiting for rename notify acks from " | |
9818 | << mdr->more()->waiting_on_slave << dendl; | |
9819 | } | |
9820 | } | |
9821 | ||
9822 | // snaps | |
9823 | /* This function takes responsibility for the passed mdr*/ | |
9824 | void Server::handle_client_lssnap(MDRequestRef& mdr) | |
9825 | { | |
9f95a23c | 9826 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
9827 | |
9828 | // traverse to path | |
9f95a23c TL |
9829 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
9830 | if (!diri) | |
7c673cae | 9831 | return; |
9f95a23c | 9832 | |
7c673cae FG |
9833 | if (!diri->is_dir()) { |
9834 | respond_to_request(mdr, -ENOTDIR); | |
9835 | return; | |
9836 | } | |
9837 | dout(10) << "lssnap on " << *diri << dendl; | |
9838 | ||
9839 | // lock snap | |
9f95a23c | 9840 | if (!mds->locker->try_rdlock_snap_layout(diri, mdr)) |
7c673cae FG |
9841 | return; |
9842 | ||
9843 | if (!check_access(mdr, diri, MAY_READ)) | |
9844 | return; | |
9845 | ||
9846 | SnapRealm *realm = diri->find_snaprealm(); | |
11fdf7f2 | 9847 | map<snapid_t,const SnapInfo*> infomap; |
7c673cae FG |
9848 | realm->get_snap_info(infomap, diri->get_oldest_snap()); |
9849 | ||
9850 | unsigned max_entries = req->head.args.readdir.max_entries; | |
9851 | if (!max_entries) | |
9852 | max_entries = infomap.size(); | |
9853 | int max_bytes = req->head.args.readdir.max_bytes; | |
9854 | if (!max_bytes) | |
9855 | // make sure at least one item can be encoded | |
11fdf7f2 | 9856 | max_bytes = (512 << 10) + g_conf()->mds_max_xattr_pairs_size; |
7c673cae FG |
9857 | |
9858 | __u64 last_snapid = 0; | |
9859 | string offset_str = req->get_path2(); | |
9860 | if (!offset_str.empty()) | |
9861 | last_snapid = realm->resolve_snapname(offset_str, diri->ino()); | |
9862 | ||
11fdf7f2 | 9863 | //Empty DirStat |
7c673cae | 9864 | bufferlist dirbl; |
11fdf7f2 TL |
9865 | static DirStat empty; |
9866 | CDir::encode_dirstat(dirbl, mdr->session->info, empty); | |
7c673cae FG |
9867 | |
9868 | max_bytes -= dirbl.length() - sizeof(__u32) + sizeof(__u8) * 2; | |
9869 | ||
9870 | __u32 num = 0; | |
9871 | bufferlist dnbl; | |
11fdf7f2 | 9872 | auto p = infomap.upper_bound(last_snapid); |
7c673cae FG |
9873 | for (; p != infomap.end() && num < max_entries; ++p) { |
9874 | dout(10) << p->first << " -> " << *p->second << dendl; | |
9875 | ||
9876 | // actual | |
9877 | string snap_name; | |
9878 | if (p->second->ino == diri->ino()) | |
11fdf7f2 | 9879 | snap_name = p->second->name; |
7c673cae | 9880 | else |
11fdf7f2 | 9881 | snap_name = p->second->get_long_name(); |
7c673cae FG |
9882 | |
9883 | unsigned start_len = dnbl.length(); | |
9884 | if (int(start_len + snap_name.length() + sizeof(__u32) + sizeof(LeaseStat)) > max_bytes) | |
9885 | break; | |
9886 | ||
11fdf7f2 TL |
9887 | encode(snap_name, dnbl); |
9888 | //infinite lease | |
9f95a23c | 9889 | LeaseStat e(CEPH_LEASE_VALID, -1, 0); |
11fdf7f2 TL |
9890 | mds->locker->encode_lease(dnbl, mdr->session->info, e); |
9891 | dout(20) << "encode_infinite_lease" << dendl; | |
7c673cae FG |
9892 | |
9893 | int r = diri->encode_inodestat(dnbl, mdr->session, realm, p->first, max_bytes - (int)dnbl.length()); | |
9894 | if (r < 0) { | |
9895 | bufferlist keep; | |
9896 | keep.substr_of(dnbl, 0, start_len); | |
9897 | dnbl.swap(keep); | |
9898 | break; | |
9899 | } | |
9900 | ++num; | |
9901 | } | |
9902 | ||
11fdf7f2 | 9903 | encode(num, dirbl); |
7c673cae FG |
9904 | __u16 flags = 0; |
9905 | if (p == infomap.end()) { | |
9906 | flags = CEPH_READDIR_FRAG_END; | |
9907 | if (last_snapid == 0) | |
9908 | flags |= CEPH_READDIR_FRAG_COMPLETE; | |
9909 | } | |
11fdf7f2 | 9910 | encode(flags, dirbl); |
7c673cae FG |
9911 | dirbl.claim_append(dnbl); |
9912 | ||
9913 | mdr->reply_extra_bl = dirbl; | |
9914 | mdr->tracei = diri; | |
9915 | respond_to_request(mdr, 0); | |
9916 | } | |
9917 | ||
9918 | ||
9919 | // MKSNAP | |
9920 | ||
9921 | struct C_MDS_mksnap_finish : public ServerLogContext { | |
9922 | CInode *diri; | |
9923 | SnapInfo info; | |
9924 | C_MDS_mksnap_finish(Server *s, MDRequestRef& r, CInode *di, SnapInfo &i) : | |
9925 | ServerLogContext(s, r), diri(di), info(i) {} | |
9926 | void finish(int r) override { | |
9927 | server->_mksnap_finish(mdr, diri, info); | |
9928 | } | |
9929 | }; | |
9930 | ||
9931 | /* This function takes responsibility for the passed mdr*/ | |
9932 | void Server::handle_client_mksnap(MDRequestRef& mdr) | |
9933 | { | |
9f95a23c | 9934 | const cref_t<MClientRequest> &req = mdr->client_request; |
11fdf7f2 TL |
9935 | // make sure we have as new a map as the client |
9936 | if (req->get_mdsmap_epoch() > mds->mdsmap->get_epoch()) { | |
9937 | mds->wait_for_mdsmap(req->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache, mdr)); | |
9938 | return; | |
9939 | } | |
7c673cae FG |
9940 | if (!mds->mdsmap->allows_snaps()) { |
9941 | // you can't make snapshots until you set an option right now | |
9942 | respond_to_request(mdr, -EPERM); | |
9943 | return; | |
9944 | } | |
9945 | ||
9f95a23c TL |
9946 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
9947 | if (!diri) | |
7c673cae | 9948 | return; |
7c673cae FG |
9949 | |
9950 | // dir only | |
9951 | if (!diri->is_dir()) { | |
9952 | respond_to_request(mdr, -ENOTDIR); | |
9953 | return; | |
9954 | } | |
9955 | if (diri->is_system() && !diri->is_root()) { | |
9956 | // no snaps in system dirs (root is ok) | |
9957 | respond_to_request(mdr, -EPERM); | |
9958 | return; | |
9959 | } | |
9960 | ||
11fdf7f2 | 9961 | std::string_view snapname = req->get_filepath().last_dentry(); |
7c673cae | 9962 | |
11fdf7f2 | 9963 | 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 FG |
9964 | dout(20) << "mksnap " << snapname << " on " << *diri << " denied to uid " << mdr->client_request->get_caller_uid() << dendl; |
9965 | respond_to_request(mdr, -EPERM); | |
9966 | return; | |
9967 | } | |
9968 | ||
9969 | dout(10) << "mksnap " << snapname << " on " << *diri << dendl; | |
9970 | ||
9971 | // lock snap | |
9f95a23c TL |
9972 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
9973 | MutationImpl::LockOpVec lov; | |
9974 | lov.add_xlock(&diri->snaplock); | |
9975 | if (!mds->locker->acquire_locks(mdr, lov)) | |
9976 | return; | |
7c673cae | 9977 | |
9f95a23c TL |
9978 | if (CDentry *pdn = diri->get_projected_parent_dn(); pdn) { |
9979 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr)) | |
9980 | return; | |
9981 | } | |
9982 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
9983 | } | |
7c673cae | 9984 | |
9f95a23c | 9985 | if (!check_access(mdr, diri, MAY_WRITE|MAY_SNAPSHOT)) |
7c673cae FG |
9986 | return; |
9987 | ||
adb31ebb TL |
9988 | if (inodeno_t subvol_ino = diri->find_snaprealm()->get_subvolume_ino(); |
9989 | (subvol_ino && subvol_ino != diri->ino())) { | |
9990 | respond_to_request(mdr, -EPERM); | |
9991 | return; | |
9992 | } | |
9993 | ||
9f95a23c TL |
9994 | // check if we can create any more snapshots |
9995 | // we don't allow any more if we are already at or beyond the limit | |
9996 | if (diri->snaprealm && | |
9997 | diri->snaprealm->get_snaps().size() >= max_snaps_per_dir) { | |
9998 | respond_to_request(mdr, -EMLINK); | |
7c673cae | 9999 | return; |
9f95a23c | 10000 | } |
7c673cae FG |
10001 | |
10002 | // make sure name is unique | |
10003 | if (diri->snaprealm && | |
10004 | diri->snaprealm->exists(snapname)) { | |
10005 | respond_to_request(mdr, -EEXIST); | |
10006 | return; | |
10007 | } | |
10008 | if (snapname.length() == 0 || | |
10009 | snapname[0] == '_') { | |
10010 | respond_to_request(mdr, -EINVAL); | |
10011 | return; | |
10012 | } | |
10013 | ||
10014 | // allocate a snapid | |
10015 | if (!mdr->more()->stid) { | |
10016 | // prepare an stid | |
10017 | mds->snapclient->prepare_create(diri->ino(), snapname, | |
10018 | mdr->get_mds_stamp(), | |
10019 | &mdr->more()->stid, &mdr->more()->snapidbl, | |
10020 | new C_MDS_RetryRequest(mdcache, mdr)); | |
10021 | return; | |
10022 | } | |
10023 | ||
10024 | version_t stid = mdr->more()->stid; | |
10025 | snapid_t snapid; | |
11fdf7f2 TL |
10026 | auto p = mdr->more()->snapidbl.cbegin(); |
10027 | decode(snapid, p); | |
7c673cae FG |
10028 | dout(10) << " stid " << stid << " snapid " << snapid << dendl; |
10029 | ||
11fdf7f2 TL |
10030 | ceph_assert(mds->snapclient->get_cached_version() >= stid); |
10031 | ||
7c673cae FG |
10032 | // journal |
10033 | SnapInfo info; | |
10034 | info.ino = diri->ino(); | |
10035 | info.snapid = snapid; | |
11fdf7f2 | 10036 | info.name = snapname; |
7c673cae FG |
10037 | info.stamp = mdr->get_op_stamp(); |
10038 | ||
94b18763 | 10039 | auto &pi = diri->project_inode(false, true); |
91327a77 AA |
10040 | pi.inode.ctime = info.stamp; |
10041 | if (info.stamp > pi.inode.rstat.rctime) | |
10042 | pi.inode.rstat.rctime = info.stamp; | |
11fdf7f2 | 10043 | pi.inode.rstat.rsnaps++; |
94b18763 | 10044 | pi.inode.version = diri->pre_dirty(); |
7c673cae FG |
10045 | |
10046 | // project the snaprealm | |
94b18763 FG |
10047 | auto &newsnap = *pi.snapnode; |
10048 | newsnap.created = snapid; | |
10049 | auto em = newsnap.snaps.emplace(std::piecewise_construct, std::forward_as_tuple(snapid), std::forward_as_tuple(info)); | |
10050 | if (!em.second) | |
10051 | em.first->second = info; | |
10052 | newsnap.seq = snapid; | |
10053 | newsnap.last_created = snapid; | |
7c673cae FG |
10054 | |
10055 | // journal the inode changes | |
10056 | mdr->ls = mdlog->get_current_segment(); | |
10057 | EUpdate *le = new EUpdate(mdlog, "mksnap"); | |
10058 | mdlog->start_entry(le); | |
10059 | ||
10060 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
10061 | le->metablob.add_table_transaction(TABLE_SNAP, stid); | |
10062 | mdcache->predirty_journal_parents(mdr, &le->metablob, diri, 0, PREDIRTY_PRIMARY, false); | |
10063 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, diri); | |
10064 | ||
10065 | // journal the snaprealm changes | |
10066 | submit_mdlog_entry(le, new C_MDS_mksnap_finish(this, mdr, diri, info), | |
10067 | mdr, __func__); | |
10068 | mdlog->flush(); | |
10069 | } | |
10070 | ||
10071 | void Server::_mksnap_finish(MDRequestRef& mdr, CInode *diri, SnapInfo &info) | |
10072 | { | |
10073 | dout(10) << "_mksnap_finish " << *mdr << " " << info << dendl; | |
10074 | ||
10075 | int op = (diri->snaprealm? CEPH_SNAP_OP_CREATE : CEPH_SNAP_OP_SPLIT); | |
10076 | ||
10077 | diri->pop_and_dirty_projected_inode(mdr->ls); | |
10078 | mdr->apply(); | |
10079 | ||
10080 | mds->snapclient->commit(mdr->more()->stid, mdr->ls); | |
10081 | ||
10082 | // create snap | |
10083 | dout(10) << "snaprealm now " << *diri->snaprealm << dendl; | |
10084 | ||
11fdf7f2 TL |
10085 | // notify other mds |
10086 | mdcache->send_snap_update(diri, mdr->more()->stid, op); | |
10087 | ||
7c673cae FG |
10088 | mdcache->do_realm_invalidate_and_update_notify(diri, op); |
10089 | ||
10090 | // yay | |
10091 | mdr->in[0] = diri; | |
10092 | mdr->snapid = info.snapid; | |
10093 | mdr->tracei = diri; | |
10094 | respond_to_request(mdr, 0); | |
10095 | } | |
10096 | ||
10097 | ||
10098 | // RMSNAP | |
10099 | ||
10100 | struct C_MDS_rmsnap_finish : public ServerLogContext { | |
10101 | CInode *diri; | |
10102 | snapid_t snapid; | |
10103 | C_MDS_rmsnap_finish(Server *s, MDRequestRef& r, CInode *di, snapid_t sn) : | |
10104 | ServerLogContext(s, r), diri(di), snapid(sn) {} | |
10105 | void finish(int r) override { | |
10106 | server->_rmsnap_finish(mdr, diri, snapid); | |
10107 | } | |
10108 | }; | |
10109 | ||
10110 | /* This function takes responsibility for the passed mdr*/ | |
10111 | void Server::handle_client_rmsnap(MDRequestRef& mdr) | |
10112 | { | |
9f95a23c | 10113 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae | 10114 | |
9f95a23c TL |
10115 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
10116 | if (!diri) | |
7c673cae | 10117 | return; |
9f95a23c | 10118 | |
7c673cae FG |
10119 | if (!diri->is_dir()) { |
10120 | respond_to_request(mdr, -ENOTDIR); | |
10121 | return; | |
10122 | } | |
10123 | ||
11fdf7f2 | 10124 | std::string_view snapname = req->get_filepath().last_dentry(); |
7c673cae | 10125 | |
11fdf7f2 | 10126 | 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 FG |
10127 | dout(20) << "rmsnap " << snapname << " on " << *diri << " denied to uid " << mdr->client_request->get_caller_uid() << dendl; |
10128 | respond_to_request(mdr, -EPERM); | |
10129 | return; | |
10130 | } | |
10131 | ||
10132 | dout(10) << "rmsnap " << snapname << " on " << *diri << dendl; | |
10133 | ||
10134 | // does snap exist? | |
10135 | if (snapname.length() == 0 || snapname[0] == '_') { | |
10136 | respond_to_request(mdr, -EINVAL); // can't prune a parent snap, currently. | |
10137 | return; | |
10138 | } | |
10139 | if (!diri->snaprealm || !diri->snaprealm->exists(snapname)) { | |
10140 | respond_to_request(mdr, -ENOENT); | |
10141 | return; | |
10142 | } | |
10143 | snapid_t snapid = diri->snaprealm->resolve_snapname(snapname, diri->ino()); | |
10144 | dout(10) << " snapname " << snapname << " is " << snapid << dendl; | |
10145 | ||
9f95a23c TL |
10146 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
10147 | MutationImpl::LockOpVec lov; | |
10148 | lov.add_xlock(&diri->snaplock); | |
10149 | if (!mds->locker->acquire_locks(mdr, lov)) | |
10150 | return; | |
10151 | if (CDentry *pdn = diri->get_projected_parent_dn(); pdn) { | |
10152 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr)) | |
10153 | return; | |
10154 | } | |
10155 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
10156 | } | |
7c673cae | 10157 | |
11fdf7f2 | 10158 | if (!check_access(mdr, diri, MAY_WRITE|MAY_SNAPSHOT)) |
7c673cae FG |
10159 | return; |
10160 | ||
10161 | // prepare | |
10162 | if (!mdr->more()->stid) { | |
10163 | mds->snapclient->prepare_destroy(diri->ino(), snapid, | |
10164 | &mdr->more()->stid, &mdr->more()->snapidbl, | |
10165 | new C_MDS_RetryRequest(mdcache, mdr)); | |
10166 | return; | |
10167 | } | |
10168 | version_t stid = mdr->more()->stid; | |
11fdf7f2 | 10169 | auto p = mdr->more()->snapidbl.cbegin(); |
7c673cae | 10170 | snapid_t seq; |
11fdf7f2 | 10171 | decode(seq, p); |
7c673cae FG |
10172 | dout(10) << " stid is " << stid << ", seq is " << seq << dendl; |
10173 | ||
11fdf7f2 TL |
10174 | ceph_assert(mds->snapclient->get_cached_version() >= stid); |
10175 | ||
7c673cae | 10176 | // journal |
94b18763 FG |
10177 | auto &pi = diri->project_inode(false, true); |
10178 | pi.inode.version = diri->pre_dirty(); | |
91327a77 AA |
10179 | pi.inode.ctime = mdr->get_op_stamp(); |
10180 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
10181 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
11fdf7f2 | 10182 | pi.inode.rstat.rsnaps--; |
7c673cae FG |
10183 | |
10184 | mdr->ls = mdlog->get_current_segment(); | |
10185 | EUpdate *le = new EUpdate(mdlog, "rmsnap"); | |
10186 | mdlog->start_entry(le); | |
10187 | ||
10188 | // project the snaprealm | |
94b18763 FG |
10189 | auto &newnode = *pi.snapnode; |
10190 | newnode.snaps.erase(snapid); | |
10191 | newnode.seq = seq; | |
10192 | newnode.last_destroyed = seq; | |
7c673cae FG |
10193 | |
10194 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
10195 | le->metablob.add_table_transaction(TABLE_SNAP, stid); | |
10196 | mdcache->predirty_journal_parents(mdr, &le->metablob, diri, 0, PREDIRTY_PRIMARY, false); | |
10197 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, diri); | |
10198 | ||
10199 | submit_mdlog_entry(le, new C_MDS_rmsnap_finish(this, mdr, diri, snapid), | |
10200 | mdr, __func__); | |
10201 | mdlog->flush(); | |
10202 | } | |
10203 | ||
10204 | void Server::_rmsnap_finish(MDRequestRef& mdr, CInode *diri, snapid_t snapid) | |
10205 | { | |
10206 | dout(10) << "_rmsnap_finish " << *mdr << " " << snapid << dendl; | |
10207 | snapid_t stid = mdr->more()->stid; | |
11fdf7f2 | 10208 | auto p = mdr->more()->snapidbl.cbegin(); |
7c673cae | 10209 | snapid_t seq; |
11fdf7f2 | 10210 | decode(seq, p); |
7c673cae FG |
10211 | |
10212 | diri->pop_and_dirty_projected_inode(mdr->ls); | |
10213 | mdr->apply(); | |
10214 | ||
10215 | mds->snapclient->commit(stid, mdr->ls); | |
10216 | ||
10217 | dout(10) << "snaprealm now " << *diri->snaprealm << dendl; | |
10218 | ||
11fdf7f2 TL |
10219 | // notify other mds |
10220 | mdcache->send_snap_update(diri, mdr->more()->stid, CEPH_SNAP_OP_DESTROY); | |
10221 | ||
7c673cae FG |
10222 | mdcache->do_realm_invalidate_and_update_notify(diri, CEPH_SNAP_OP_DESTROY); |
10223 | ||
10224 | // yay | |
10225 | mdr->in[0] = diri; | |
10226 | respond_to_request(mdr, 0); | |
10227 | ||
10228 | // purge snapshot data | |
10229 | if (diri->snaprealm->have_past_parents_open()) | |
10230 | diri->purge_stale_snap_data(diri->snaprealm->get_snaps()); | |
10231 | } | |
10232 | ||
10233 | struct C_MDS_renamesnap_finish : public ServerLogContext { | |
10234 | CInode *diri; | |
10235 | snapid_t snapid; | |
10236 | C_MDS_renamesnap_finish(Server *s, MDRequestRef& r, CInode *di, snapid_t sn) : | |
10237 | ServerLogContext(s, r), diri(di), snapid(sn) {} | |
10238 | void finish(int r) override { | |
10239 | server->_renamesnap_finish(mdr, diri, snapid); | |
10240 | } | |
10241 | }; | |
10242 | ||
10243 | /* This function takes responsibility for the passed mdr*/ | |
10244 | void Server::handle_client_renamesnap(MDRequestRef& mdr) | |
10245 | { | |
9f95a23c | 10246 | const cref_t<MClientRequest> &req = mdr->client_request; |
7c673cae FG |
10247 | if (req->get_filepath().get_ino() != req->get_filepath2().get_ino()) { |
10248 | respond_to_request(mdr, -EINVAL); | |
10249 | return; | |
10250 | } | |
10251 | ||
9f95a23c TL |
10252 | CInode *diri = try_get_auth_inode(mdr, req->get_filepath().get_ino()); |
10253 | if (!diri) | |
7c673cae | 10254 | return; |
7c673cae FG |
10255 | |
10256 | if (!diri->is_dir()) { // dir only | |
10257 | respond_to_request(mdr, -ENOTDIR); | |
10258 | return; | |
10259 | } | |
10260 | ||
11fdf7f2 TL |
10261 | if (mdr->client_request->get_caller_uid() < g_conf()->mds_snap_min_uid || |
10262 | mdr->client_request->get_caller_uid() > g_conf()->mds_snap_max_uid) { | |
7c673cae FG |
10263 | respond_to_request(mdr, -EPERM); |
10264 | return; | |
10265 | } | |
10266 | ||
11fdf7f2 TL |
10267 | std::string_view dstname = req->get_filepath().last_dentry(); |
10268 | std::string_view srcname = req->get_filepath2().last_dentry(); | |
7c673cae FG |
10269 | dout(10) << "renamesnap " << srcname << "->" << dstname << " on " << *diri << dendl; |
10270 | ||
10271 | if (srcname.length() == 0 || srcname[0] == '_') { | |
10272 | respond_to_request(mdr, -EINVAL); // can't rename a parent snap. | |
10273 | return; | |
10274 | } | |
10275 | if (!diri->snaprealm || !diri->snaprealm->exists(srcname)) { | |
10276 | respond_to_request(mdr, -ENOENT); | |
10277 | return; | |
10278 | } | |
10279 | if (dstname.length() == 0 || dstname[0] == '_') { | |
10280 | respond_to_request(mdr, -EINVAL); | |
10281 | return; | |
10282 | } | |
10283 | if (diri->snaprealm->exists(dstname)) { | |
10284 | respond_to_request(mdr, -EEXIST); | |
10285 | return; | |
10286 | } | |
10287 | ||
10288 | snapid_t snapid = diri->snaprealm->resolve_snapname(srcname, diri->ino()); | |
10289 | dout(10) << " snapname " << srcname << " is " << snapid << dendl; | |
10290 | ||
10291 | // lock snap | |
9f95a23c TL |
10292 | if (!(mdr->locking_state & MutationImpl::ALL_LOCKED)) { |
10293 | MutationImpl::LockOpVec lov; | |
10294 | lov.add_xlock(&diri->snaplock); | |
10295 | if (!mds->locker->acquire_locks(mdr, lov)) | |
10296 | return; | |
10297 | if (CDentry *pdn = diri->get_projected_parent_dn(); pdn) { | |
10298 | if (!mds->locker->try_rdlock_snap_layout(pdn->get_dir()->get_inode(), mdr)) | |
10299 | return; | |
10300 | } | |
10301 | mdr->locking_state |= MutationImpl::ALL_LOCKED; | |
10302 | } | |
7c673cae | 10303 | |
11fdf7f2 | 10304 | if (!check_access(mdr, diri, MAY_WRITE|MAY_SNAPSHOT)) |
7c673cae FG |
10305 | return; |
10306 | ||
10307 | // prepare | |
10308 | if (!mdr->more()->stid) { | |
10309 | mds->snapclient->prepare_update(diri->ino(), snapid, dstname, utime_t(), | |
11fdf7f2 | 10310 | &mdr->more()->stid, |
7c673cae FG |
10311 | new C_MDS_RetryRequest(mdcache, mdr)); |
10312 | return; | |
10313 | } | |
10314 | ||
10315 | version_t stid = mdr->more()->stid; | |
11fdf7f2 TL |
10316 | dout(10) << " stid is " << stid << dendl; |
10317 | ||
10318 | ceph_assert(mds->snapclient->get_cached_version() >= stid); | |
7c673cae FG |
10319 | |
10320 | // journal | |
94b18763 | 10321 | auto &pi = diri->project_inode(false, true); |
91327a77 AA |
10322 | pi.inode.ctime = mdr->get_op_stamp(); |
10323 | if (mdr->get_op_stamp() > pi.inode.rstat.rctime) | |
10324 | pi.inode.rstat.rctime = mdr->get_op_stamp(); | |
94b18763 | 10325 | pi.inode.version = diri->pre_dirty(); |
7c673cae FG |
10326 | |
10327 | // project the snaprealm | |
94b18763 FG |
10328 | auto &newsnap = *pi.snapnode; |
10329 | auto it = newsnap.snaps.find(snapid); | |
11fdf7f2 TL |
10330 | ceph_assert(it != newsnap.snaps.end()); |
10331 | it->second.name = dstname; | |
7c673cae FG |
10332 | |
10333 | // journal the inode changes | |
10334 | mdr->ls = mdlog->get_current_segment(); | |
10335 | EUpdate *le = new EUpdate(mdlog, "renamesnap"); | |
10336 | mdlog->start_entry(le); | |
10337 | ||
10338 | le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid()); | |
10339 | le->metablob.add_table_transaction(TABLE_SNAP, stid); | |
10340 | mdcache->predirty_journal_parents(mdr, &le->metablob, diri, 0, PREDIRTY_PRIMARY, false); | |
10341 | mdcache->journal_dirty_inode(mdr.get(), &le->metablob, diri); | |
10342 | ||
10343 | // journal the snaprealm changes | |
10344 | submit_mdlog_entry(le, new C_MDS_renamesnap_finish(this, mdr, diri, snapid), | |
10345 | mdr, __func__); | |
10346 | mdlog->flush(); | |
10347 | } | |
10348 | ||
10349 | void Server::_renamesnap_finish(MDRequestRef& mdr, CInode *diri, snapid_t snapid) | |
10350 | { | |
10351 | dout(10) << "_renamesnap_finish " << *mdr << " " << snapid << dendl; | |
10352 | ||
10353 | diri->pop_and_dirty_projected_inode(mdr->ls); | |
10354 | mdr->apply(); | |
10355 | ||
10356 | mds->snapclient->commit(mdr->more()->stid, mdr->ls); | |
10357 | ||
10358 | dout(10) << "snaprealm now " << *diri->snaprealm << dendl; | |
10359 | ||
11fdf7f2 TL |
10360 | // notify other mds |
10361 | mdcache->send_snap_update(diri, mdr->more()->stid, CEPH_SNAP_OP_UPDATE); | |
10362 | ||
10363 | mdcache->do_realm_invalidate_and_update_notify(diri, CEPH_SNAP_OP_UPDATE); | |
7c673cae FG |
10364 | |
10365 | // yay | |
10366 | mdr->in[0] = diri; | |
10367 | mdr->tracei = diri; | |
10368 | mdr->snapid = snapid; | |
10369 | respond_to_request(mdr, 0); | |
10370 | } | |
10371 | ||
10372 | /** | |
10373 | * Return true if server is in state RECONNECT and this | |
10374 | * client has not yet reconnected. | |
10375 | */ | |
10376 | bool Server::waiting_for_reconnect(client_t c) const | |
10377 | { | |
10378 | return client_reconnect_gather.count(c) > 0; | |
10379 | } | |
10380 | ||
10381 | void Server::dump_reconnect_status(Formatter *f) const | |
10382 | { | |
10383 | f->open_object_section("reconnect_status"); | |
10384 | f->dump_stream("client_reconnect_gather") << client_reconnect_gather; | |
10385 | f->close_section(); | |
10386 | } |