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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 | ||
7c673cae FG |
16 | #include "CDir.h" |
17 | #include "CDentry.h" | |
9f95a23c TL |
18 | #include "CInode.h" |
19 | #include "common/config.h" | |
20 | #include "events/EOpen.h" | |
21 | #include "events/EUpdate.h" | |
22 | #include "Locker.h" | |
23 | #include "MDBalancer.h" | |
24 | #include "MDCache.h" | |
7c673cae | 25 | #include "MDLog.h" |
9f95a23c | 26 | #include "MDSRank.h" |
7c673cae | 27 | #include "MDSMap.h" |
7c673cae | 28 | #include "messages/MInodeFileCaps.h" |
f67539c2 | 29 | #include "messages/MMDSPeerRequest.h" |
9f95a23c TL |
30 | #include "Migrator.h" |
31 | #include "msg/Messenger.h" | |
32 | #include "osdc/Objecter.h" | |
7c673cae FG |
33 | |
34 | #define dout_subsys ceph_subsys_mds | |
35 | #undef dout_prefix | |
36 | #define dout_context g_ceph_context | |
37 | #define dout_prefix _prefix(_dout, mds) | |
20effc67 TL |
38 | |
39 | using namespace std; | |
40 | ||
7c673cae FG |
41 | static ostream& _prefix(std::ostream *_dout, MDSRank *mds) { |
42 | return *_dout << "mds." << mds->get_nodeid() << ".locker "; | |
43 | } | |
44 | ||
45 | ||
11fdf7f2 | 46 | class LockerContext : public MDSContext { |
7c673cae FG |
47 | protected: |
48 | Locker *locker; | |
49 | MDSRank *get_mds() override | |
50 | { | |
51 | return locker->mds; | |
52 | } | |
53 | ||
54 | public: | |
55 | explicit LockerContext(Locker *locker_) : locker(locker_) { | |
11fdf7f2 | 56 | ceph_assert(locker != NULL); |
7c673cae FG |
57 | } |
58 | }; | |
59 | ||
60 | class LockerLogContext : public MDSLogContextBase { | |
61 | protected: | |
62 | Locker *locker; | |
63 | MDSRank *get_mds() override | |
64 | { | |
65 | return locker->mds; | |
66 | } | |
67 | ||
68 | public: | |
69 | explicit LockerLogContext(Locker *locker_) : locker(locker_) { | |
11fdf7f2 | 70 | ceph_assert(locker != NULL); |
7c673cae FG |
71 | } |
72 | }; | |
73 | ||
11fdf7f2 | 74 | Locker::Locker(MDSRank *m, MDCache *c) : |
9f95a23c | 75 | need_snapflush_inodes(member_offset(CInode, item_caps)), mds(m), mdcache(c) {} |
11fdf7f2 TL |
76 | |
77 | ||
9f95a23c | 78 | void Locker::dispatch(const cref_t<Message> &m) |
7c673cae FG |
79 | { |
80 | ||
81 | switch (m->get_type()) { | |
7c673cae FG |
82 | // inter-mds locking |
83 | case MSG_MDS_LOCK: | |
9f95a23c | 84 | handle_lock(ref_cast<MLock>(m)); |
7c673cae FG |
85 | break; |
86 | // inter-mds caps | |
87 | case MSG_MDS_INODEFILECAPS: | |
9f95a23c | 88 | handle_inode_file_caps(ref_cast<MInodeFileCaps>(m)); |
7c673cae | 89 | break; |
7c673cae FG |
90 | // client sync |
91 | case CEPH_MSG_CLIENT_CAPS: | |
9f95a23c | 92 | handle_client_caps(ref_cast<MClientCaps>(m)); |
7c673cae FG |
93 | break; |
94 | case CEPH_MSG_CLIENT_CAPRELEASE: | |
9f95a23c | 95 | handle_client_cap_release(ref_cast<MClientCapRelease>(m)); |
7c673cae FG |
96 | break; |
97 | case CEPH_MSG_CLIENT_LEASE: | |
9f95a23c | 98 | handle_client_lease(ref_cast<MClientLease>(m)); |
7c673cae | 99 | break; |
7c673cae FG |
100 | default: |
101 | derr << "locker unknown message " << m->get_type() << dendl; | |
11fdf7f2 | 102 | ceph_abort_msg("locker unknown message"); |
7c673cae FG |
103 | } |
104 | } | |
105 | ||
106 | void Locker::tick() | |
107 | { | |
108 | scatter_tick(); | |
109 | caps_tick(); | |
110 | } | |
111 | ||
112 | /* | |
113 | * locks vs rejoin | |
114 | * | |
115 | * | |
116 | * | |
117 | */ | |
118 | ||
119 | void Locker::send_lock_message(SimpleLock *lock, int msg) | |
120 | { | |
181888fb | 121 | for (const auto &it : lock->get_parent()->get_replicas()) { |
7c673cae | 122 | if (mds->is_cluster_degraded() && |
181888fb | 123 | mds->mdsmap->get_state(it.first) < MDSMap::STATE_REJOIN) |
7c673cae | 124 | continue; |
9f95a23c | 125 | auto m = make_message<MLock>(lock, msg, mds->get_nodeid()); |
181888fb | 126 | mds->send_message_mds(m, it.first); |
7c673cae FG |
127 | } |
128 | } | |
129 | ||
130 | void Locker::send_lock_message(SimpleLock *lock, int msg, const bufferlist &data) | |
131 | { | |
181888fb | 132 | for (const auto &it : lock->get_parent()->get_replicas()) { |
7c673cae | 133 | if (mds->is_cluster_degraded() && |
181888fb | 134 | mds->mdsmap->get_state(it.first) < MDSMap::STATE_REJOIN) |
7c673cae | 135 | continue; |
9f95a23c | 136 | auto m = make_message<MLock>(lock, msg, mds->get_nodeid()); |
7c673cae | 137 | m->set_data(data); |
181888fb | 138 | mds->send_message_mds(m, it.first); |
7c673cae FG |
139 | } |
140 | } | |
141 | ||
9f95a23c TL |
142 | bool Locker::try_rdlock_snap_layout(CInode *in, MDRequestRef& mdr, |
143 | int n, bool want_layout) | |
7c673cae | 144 | { |
9f95a23c | 145 | dout(10) << __func__ << " " << *mdr << " " << *in << dendl; |
7c673cae | 146 | // rdlock ancestor snaps |
9f95a23c TL |
147 | inodeno_t root; |
148 | int depth = -1; | |
149 | bool found_locked = false; | |
150 | bool found_layout = false; | |
151 | ||
152 | if (want_layout) | |
153 | ceph_assert(n == 0); | |
154 | ||
155 | client_t client = mdr->get_client(); | |
7c673cae | 156 | |
7c673cae | 157 | CInode *t = in; |
9f95a23c TL |
158 | while (true) { |
159 | ++depth; | |
160 | if (!found_locked && mdr->is_rdlocked(&t->snaplock)) | |
161 | found_locked = true; | |
162 | ||
163 | if (!found_locked) { | |
164 | if (!t->snaplock.can_rdlock(client)) { | |
165 | t->snaplock.add_waiter(SimpleLock::WAIT_RD, new C_MDS_RetryRequest(mdcache, mdr)); | |
166 | goto failed; | |
167 | } | |
168 | t->snaplock.get_rdlock(); | |
169 | mdr->locks.emplace(&t->snaplock, MutationImpl::LockOp::RDLOCK); | |
170 | dout(20) << " got rdlock on " << t->snaplock << " " << *t << dendl; | |
171 | } | |
172 | if (want_layout && !found_layout) { | |
173 | if (!mdr->is_rdlocked(&t->policylock)) { | |
174 | if (!t->policylock.can_rdlock(client)) { | |
175 | t->policylock.add_waiter(SimpleLock::WAIT_RD, new C_MDS_RetryRequest(mdcache, mdr)); | |
176 | goto failed; | |
177 | } | |
178 | t->policylock.get_rdlock(); | |
179 | mdr->locks.emplace(&t->policylock, MutationImpl::LockOp::RDLOCK); | |
180 | dout(20) << " got rdlock on " << t->policylock << " " << *t << dendl; | |
181 | } | |
7c673cae | 182 | if (t->get_projected_inode()->has_layout()) { |
9f95a23c TL |
183 | mdr->dir_layout = t->get_projected_inode()->layout; |
184 | found_layout = true; | |
7c673cae FG |
185 | } |
186 | } | |
9f95a23c TL |
187 | CDentry* pdn = t->get_projected_parent_dn(); |
188 | if (!pdn) { | |
189 | root = t->ino(); | |
190 | break; | |
191 | } | |
192 | t = pdn->get_dir()->get_inode(); | |
7c673cae | 193 | } |
9f95a23c TL |
194 | |
195 | mdr->dir_root[n] = root; | |
196 | mdr->dir_depth[n] = depth; | |
197 | return true; | |
198 | ||
199 | failed: | |
200 | dout(10) << __func__ << " failed" << dendl; | |
201 | ||
202 | drop_locks(mdr.get(), nullptr); | |
203 | mdr->drop_local_auth_pins(); | |
204 | return false; | |
7c673cae FG |
205 | } |
206 | ||
207 | struct MarkEventOnDestruct { | |
208 | MDRequestRef& mdr; | |
11fdf7f2 | 209 | std::string_view message; |
7c673cae | 210 | bool mark_event; |
11fdf7f2 TL |
211 | MarkEventOnDestruct(MDRequestRef& _mdr, std::string_view _message) : |
212 | mdr(_mdr), | |
213 | message(_message), | |
214 | mark_event(true) {} | |
7c673cae FG |
215 | ~MarkEventOnDestruct() { |
216 | if (mark_event) | |
217 | mdr->mark_event(message); | |
218 | } | |
219 | }; | |
220 | ||
221 | /* If this function returns false, the mdr has been placed | |
222 | * on the appropriate wait list */ | |
223 | bool Locker::acquire_locks(MDRequestRef& mdr, | |
11fdf7f2 | 224 | MutationImpl::LockOpVec& lov, |
7c673cae | 225 | CInode *auth_pin_freeze, |
9f95a23c | 226 | bool auth_pin_nonblocking) |
7c673cae | 227 | { |
7c673cae FG |
228 | dout(10) << "acquire_locks " << *mdr << dendl; |
229 | ||
230 | MarkEventOnDestruct marker(mdr, "failed to acquire_locks"); | |
231 | ||
232 | client_t client = mdr->get_client(); | |
233 | ||
11fdf7f2 | 234 | set<MDSCacheObject*> mustpin; // items to authpin |
9f95a23c TL |
235 | if (auth_pin_freeze) |
236 | mustpin.insert(auth_pin_freeze); | |
7c673cae FG |
237 | |
238 | // xlocks | |
9f95a23c | 239 | for (size_t i = 0; i < lov.size(); ++i) { |
11fdf7f2 TL |
240 | auto& p = lov[i]; |
241 | SimpleLock *lock = p.lock; | |
242 | MDSCacheObject *object = lock->get_parent(); | |
243 | ||
244 | if (p.is_xlock()) { | |
245 | if ((lock->get_type() == CEPH_LOCK_ISNAP || | |
246 | lock->get_type() == CEPH_LOCK_IPOLICY) && | |
247 | mds->is_cluster_degraded() && | |
f67539c2 | 248 | mdr->is_leader() && |
11fdf7f2 TL |
249 | !mdr->is_queued_for_replay()) { |
250 | // waiting for recovering mds, to guarantee replayed requests and mksnap/setlayout | |
251 | // get processed in proper order. | |
252 | bool wait = false; | |
253 | if (object->is_auth()) { | |
9f95a23c | 254 | if (!mdr->is_xlocked(lock)) { |
11fdf7f2 TL |
255 | set<mds_rank_t> ls; |
256 | object->list_replicas(ls); | |
257 | for (auto m : ls) { | |
258 | if (mds->mdsmap->get_state(m) < MDSMap::STATE_ACTIVE) { | |
259 | wait = true; | |
260 | break; | |
261 | } | |
b32b8144 FG |
262 | } |
263 | } | |
11fdf7f2 | 264 | } else { |
f67539c2 | 265 | // if the lock is the latest locked one, it's possible that peer mds got the lock |
11fdf7f2 | 266 | // while there are recovering mds. |
9f95a23c | 267 | if (!mdr->is_xlocked(lock) || mdr->is_last_locked(lock)) |
11fdf7f2 TL |
268 | wait = true; |
269 | } | |
270 | if (wait) { | |
271 | dout(10) << " must xlock " << *lock << " " << *object | |
272 | << ", waiting for cluster recovered" << dendl; | |
273 | mds->locker->drop_locks(mdr.get(), NULL); | |
274 | mdr->drop_local_auth_pins(); | |
275 | mds->wait_for_cluster_recovered(new C_MDS_RetryRequest(mdcache, mdr)); | |
276 | return false; | |
b32b8144 | 277 | } |
b32b8144 | 278 | } |
7c673cae | 279 | |
11fdf7f2 | 280 | dout(20) << " must xlock " << *lock << " " << *object << dendl; |
7c673cae | 281 | |
11fdf7f2 | 282 | mustpin.insert(object); |
7c673cae | 283 | |
11fdf7f2 TL |
284 | // augment xlock with a versionlock? |
285 | if (lock->get_type() == CEPH_LOCK_DN) { | |
286 | CDentry *dn = static_cast<CDentry*>(object); | |
287 | if (!dn->is_auth()) | |
288 | continue; | |
f67539c2 TL |
289 | if (mdr->is_leader()) { |
290 | // leader. wrlock versionlock so we can pipeline dentry updates to journal. | |
9f95a23c | 291 | lov.add_wrlock(&dn->versionlock, i + 1); |
11fdf7f2 | 292 | } else { |
f67539c2 | 293 | // peer. exclusively lock the dentry version (i.e. block other journal updates). |
11fdf7f2 | 294 | // this makes rollback safe. |
9f95a23c | 295 | lov.add_xlock(&dn->versionlock, i + 1); |
11fdf7f2 | 296 | } |
7c673cae | 297 | } |
9f95a23c | 298 | if (lock->get_type() >= CEPH_LOCK_IFIRST && lock->get_type() != CEPH_LOCK_IVERSION) { |
11fdf7f2 TL |
299 | // inode version lock? |
300 | CInode *in = static_cast<CInode*>(object); | |
301 | if (!in->is_auth()) | |
302 | continue; | |
f67539c2 TL |
303 | if (mdr->is_leader()) { |
304 | // leader. wrlock versionlock so we can pipeline inode updates to journal. | |
9f95a23c | 305 | lov.add_wrlock(&in->versionlock, i + 1); |
11fdf7f2 | 306 | } else { |
f67539c2 | 307 | // peer. exclusively lock the inode version (i.e. block other journal updates). |
11fdf7f2 | 308 | // this makes rollback safe. |
9f95a23c | 309 | lov.add_xlock(&in->versionlock, i + 1); |
11fdf7f2 | 310 | } |
7c673cae | 311 | } |
11fdf7f2 TL |
312 | } else if (p.is_wrlock()) { |
313 | dout(20) << " must wrlock " << *lock << " " << *object << dendl; | |
9f95a23c | 314 | client_t _client = p.is_state_pin() ? lock->get_excl_client() : client; |
11fdf7f2 TL |
315 | if (object->is_auth()) { |
316 | mustpin.insert(object); | |
317 | } else if (!object->is_auth() && | |
9f95a23c | 318 | !lock->can_wrlock(_client) && // we might have to request a scatter |
f67539c2 | 319 | !mdr->is_peer()) { // if we are peer (remote_wrlock), the leader already authpinned |
11fdf7f2 TL |
320 | dout(15) << " will also auth_pin " << *object |
321 | << " in case we need to request a scatter" << dendl; | |
322 | mustpin.insert(object); | |
323 | } | |
324 | } else if (p.is_remote_wrlock()) { | |
325 | dout(20) << " must remote_wrlock on mds." << p.wrlock_target << " " | |
326 | << *lock << " " << *object << dendl; | |
7c673cae | 327 | mustpin.insert(object); |
11fdf7f2 TL |
328 | } else if (p.is_rdlock()) { |
329 | ||
330 | dout(20) << " must rdlock " << *lock << " " << *object << dendl; | |
331 | if (object->is_auth()) { | |
332 | mustpin.insert(object); | |
333 | } else if (!object->is_auth() && | |
334 | !lock->can_rdlock(client)) { // we might have to request an rdlock | |
335 | dout(15) << " will also auth_pin " << *object | |
336 | << " in case we need to request a rdlock" << dendl; | |
337 | mustpin.insert(object); | |
338 | } | |
339 | } else { | |
340 | ceph_assert(0 == "locker unknown lock operation"); | |
7c673cae FG |
341 | } |
342 | } | |
343 | ||
11fdf7f2 | 344 | lov.sort_and_merge(); |
7c673cae FG |
345 | |
346 | // AUTH PINS | |
347 | map<mds_rank_t, set<MDSCacheObject*> > mustpin_remote; // mds -> (object set) | |
348 | ||
349 | // can i auth pin them all now? | |
350 | marker.message = "failed to authpin local pins"; | |
11fdf7f2 TL |
351 | for (const auto &p : mustpin) { |
352 | MDSCacheObject *object = p; | |
7c673cae FG |
353 | |
354 | dout(10) << " must authpin " << *object << dendl; | |
355 | ||
356 | if (mdr->is_auth_pinned(object)) { | |
357 | if (object != (MDSCacheObject*)auth_pin_freeze) | |
358 | continue; | |
359 | if (mdr->more()->is_remote_frozen_authpin) { | |
360 | if (mdr->more()->rename_inode == auth_pin_freeze) | |
361 | continue; | |
362 | // unfreeze auth pin for the wrong inode | |
363 | mustpin_remote[mdr->more()->rename_inode->authority().first].size(); | |
364 | } | |
365 | } | |
366 | ||
367 | if (!object->is_auth()) { | |
9f95a23c TL |
368 | if (mdr->lock_cache) { // debug |
369 | ceph_assert(mdr->lock_cache->opcode == CEPH_MDS_OP_UNLINK); | |
370 | CDentry *dn = mdr->dn[0].back(); | |
371 | ceph_assert(dn->get_projected_linkage()->is_remote()); | |
372 | } | |
373 | ||
7c673cae FG |
374 | if (object->is_ambiguous_auth()) { |
375 | // wait | |
376 | dout(10) << " ambiguous auth, waiting to authpin " << *object << dendl; | |
9f95a23c TL |
377 | mdr->disable_lock_cache(); |
378 | drop_locks(mdr.get()); | |
7c673cae | 379 | mdr->drop_local_auth_pins(); |
9f95a23c TL |
380 | marker.message = "waiting for single auth, object is being migrated"; |
381 | object->add_waiter(MDSCacheObject::WAIT_SINGLEAUTH, new C_MDS_RetryRequest(mdcache, mdr)); | |
7c673cae FG |
382 | return false; |
383 | } | |
384 | mustpin_remote[object->authority().first].insert(object); | |
385 | continue; | |
386 | } | |
91327a77 AA |
387 | int err = 0; |
388 | if (!object->can_auth_pin(&err)) { | |
9f95a23c TL |
389 | if (mdr->lock_cache) { |
390 | CDir *dir; | |
391 | if (CInode *in = dynamic_cast<CInode*>(object)) { | |
392 | ceph_assert(!in->is_frozen_inode() && !in->is_frozen_auth_pin()); | |
393 | dir = in->get_projected_parent_dir(); | |
394 | } else if (CDentry *dn = dynamic_cast<CDentry*>(object)) { | |
395 | dir = dn->get_dir(); | |
396 | } else { | |
397 | ceph_assert(0 == "unknown type of lock parent"); | |
398 | } | |
399 | if (dir->get_inode() == mdr->lock_cache->get_dir_inode()) { | |
400 | // forcibly auth pin if there is lock cache on parent dir | |
401 | continue; | |
402 | } | |
403 | ||
404 | { // debug | |
405 | ceph_assert(mdr->lock_cache->opcode == CEPH_MDS_OP_UNLINK); | |
406 | CDentry *dn = mdr->dn[0].back(); | |
407 | ceph_assert(dn->get_projected_linkage()->is_remote()); | |
408 | } | |
409 | } | |
410 | ||
7c673cae | 411 | // wait |
9f95a23c | 412 | mdr->disable_lock_cache(); |
7c673cae FG |
413 | drop_locks(mdr.get()); |
414 | mdr->drop_local_auth_pins(); | |
9f95a23c | 415 | if (auth_pin_nonblocking) { |
7c673cae FG |
416 | dout(10) << " can't auth_pin (freezing?) " << *object << ", nonblocking" << dendl; |
417 | mdr->aborted = true; | |
418 | return false; | |
419 | } | |
91327a77 AA |
420 | if (err == MDSCacheObject::ERR_EXPORTING_TREE) { |
421 | marker.message = "failed to authpin, subtree is being exported"; | |
422 | } else if (err == MDSCacheObject::ERR_FRAGMENTING_DIR) { | |
423 | marker.message = "failed to authpin, dir is being fragmented"; | |
424 | } else if (err == MDSCacheObject::ERR_EXPORTING_INODE) { | |
425 | marker.message = "failed to authpin, inode is being exported"; | |
426 | } | |
7c673cae FG |
427 | dout(10) << " can't auth_pin (freezing?), waiting to authpin " << *object << dendl; |
428 | object->add_waiter(MDSCacheObject::WAIT_UNFREEZE, new C_MDS_RetryRequest(mdcache, mdr)); | |
224ce89b | 429 | |
9f95a23c | 430 | if (mdr->is_any_remote_auth_pin()) |
224ce89b WB |
431 | notify_freeze_waiter(object); |
432 | ||
7c673cae FG |
433 | return false; |
434 | } | |
435 | } | |
436 | ||
437 | // ok, grab local auth pins | |
11fdf7f2 TL |
438 | for (const auto& p : mustpin) { |
439 | MDSCacheObject *object = p; | |
7c673cae FG |
440 | if (mdr->is_auth_pinned(object)) { |
441 | dout(10) << " already auth_pinned " << *object << dendl; | |
442 | } else if (object->is_auth()) { | |
443 | dout(10) << " auth_pinning " << *object << dendl; | |
444 | mdr->auth_pin(object); | |
445 | } | |
446 | } | |
447 | ||
448 | // request remote auth_pins | |
449 | if (!mustpin_remote.empty()) { | |
450 | marker.message = "requesting remote authpins"; | |
9f95a23c TL |
451 | for (const auto& p : mdr->object_states) { |
452 | if (p.second.remote_auth_pinned == MDS_RANK_NONE) | |
453 | continue; | |
454 | ceph_assert(p.second.remote_auth_pinned == p.first->authority().first); | |
455 | auto q = mustpin_remote.find(p.second.remote_auth_pinned); | |
456 | if (q != mustpin_remote.end()) | |
457 | q->second.insert(p.first); | |
7c673cae | 458 | } |
9f95a23c TL |
459 | |
460 | for (auto& p : mustpin_remote) { | |
461 | dout(10) << "requesting remote auth_pins from mds." << p.first << dendl; | |
7c673cae FG |
462 | |
463 | // wait for active auth | |
464 | if (mds->is_cluster_degraded() && | |
9f95a23c TL |
465 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(p.first)) { |
466 | dout(10) << " mds." << p.first << " is not active" << dendl; | |
f67539c2 | 467 | if (mdr->more()->waiting_on_peer.empty()) |
9f95a23c | 468 | mds->wait_for_active_peer(p.first, new C_MDS_RetryRequest(mdcache, mdr)); |
7c673cae FG |
469 | return false; |
470 | } | |
471 | ||
f67539c2 TL |
472 | auto req = make_message<MMDSPeerRequest>(mdr->reqid, mdr->attempt, |
473 | MMDSPeerRequest::OP_AUTHPIN); | |
9f95a23c TL |
474 | for (auto& o : p.second) { |
475 | dout(10) << " req remote auth_pin of " << *o << dendl; | |
7c673cae | 476 | MDSCacheObjectInfo info; |
9f95a23c | 477 | o->set_object_info(info); |
7c673cae | 478 | req->get_authpins().push_back(info); |
9f95a23c TL |
479 | if (o == auth_pin_freeze) |
480 | o->set_object_info(req->get_authpin_freeze()); | |
481 | mdr->pin(o); | |
7c673cae | 482 | } |
9f95a23c TL |
483 | if (auth_pin_nonblocking) |
484 | req->mark_nonblocking(); | |
485 | else if (!mdr->locks.empty()) | |
486 | req->mark_notify_blocking(); | |
487 | ||
488 | mds->send_message_mds(req, p.first); | |
7c673cae FG |
489 | |
490 | // put in waiting list | |
f67539c2 | 491 | auto ret = mdr->more()->waiting_on_peer.insert(p.first); |
9f95a23c | 492 | ceph_assert(ret.second); |
7c673cae FG |
493 | } |
494 | return false; | |
495 | } | |
496 | ||
497 | // caps i'll need to issue | |
498 | set<CInode*> issue_set; | |
499 | bool result = false; | |
500 | ||
501 | // acquire locks. | |
502 | // make sure they match currently acquired locks. | |
11fdf7f2 | 503 | for (const auto& p : lov) { |
9f95a23c TL |
504 | auto lock = p.lock; |
505 | if (p.is_xlock()) { | |
506 | if (mdr->is_xlocked(lock)) { | |
507 | dout(10) << " already xlocked " << *lock << " " << *lock->get_parent() << dendl; | |
7c673cae FG |
508 | continue; |
509 | } | |
9f95a23c TL |
510 | if (mdr->locking && lock != mdr->locking) |
511 | cancel_locking(mdr.get(), &issue_set); | |
512 | if (!xlock_start(lock, mdr)) { | |
513 | marker.message = "failed to xlock, waiting"; | |
514 | goto out; | |
7c673cae | 515 | } |
9f95a23c TL |
516 | dout(10) << " got xlock on " << *lock << " " << *lock->get_parent() << dendl; |
517 | } else if (p.is_wrlock() || p.is_remote_wrlock()) { | |
518 | auto it = mdr->locks.find(lock); | |
519 | if (p.is_remote_wrlock()) { | |
520 | if (it != mdr->locks.end() && it->is_remote_wrlock()) { | |
521 | dout(10) << " already remote_wrlocked " << *lock << " " << *lock->get_parent() << dendl; | |
522 | } else { | |
523 | if (mdr->locking && lock != mdr->locking) | |
524 | cancel_locking(mdr.get(), &issue_set); | |
525 | marker.message = "waiting for remote wrlocks"; | |
526 | remote_wrlock_start(lock, p.wrlock_target, mdr); | |
527 | goto out; | |
528 | } | |
529 | } | |
530 | if (p.is_wrlock()) { | |
531 | if (it != mdr->locks.end() && it->is_wrlock()) { | |
532 | dout(10) << " already wrlocked " << *lock << " " << *lock->get_parent() << dendl; | |
7c673cae FG |
533 | continue; |
534 | } | |
9f95a23c TL |
535 | client_t _client = p.is_state_pin() ? lock->get_excl_client() : client; |
536 | if (p.is_remote_wrlock()) { | |
537 | // nowait if we have already gotten remote wrlock | |
538 | if (!wrlock_try(lock, mdr, _client)) { | |
539 | marker.message = "failed to wrlock, dropping remote wrlock and waiting"; | |
540 | // can't take the wrlock because the scatter lock is gathering. need to | |
541 | // release the remote wrlock, so that the gathering process can finish. | |
542 | ceph_assert(it != mdr->locks.end()); | |
543 | remote_wrlock_finish(it, mdr.get()); | |
544 | remote_wrlock_start(lock, p.wrlock_target, mdr); | |
545 | goto out; | |
546 | } | |
547 | } else { | |
548 | if (!wrlock_start(p, mdr)) { | |
549 | ceph_assert(!p.is_remote_wrlock()); | |
550 | marker.message = "failed to wrlock, waiting"; | |
551 | goto out; | |
552 | } | |
11fdf7f2 | 553 | } |
9f95a23c | 554 | dout(10) << " got wrlock on " << *lock << " " << *lock->get_parent() << dendl; |
7c673cae | 555 | } |
9f95a23c TL |
556 | } else { |
557 | if (mdr->is_rdlocked(lock)) { | |
558 | dout(10) << " already rdlocked " << *lock << " " << *lock->get_parent() << dendl; | |
559 | continue; | |
7c673cae | 560 | } |
7c673cae | 561 | |
f67539c2 | 562 | ceph_assert(mdr->is_leader()); |
9f95a23c | 563 | if (lock->needs_recover()) { |
b32b8144 FG |
564 | if (mds->is_cluster_degraded()) { |
565 | if (!mdr->is_queued_for_replay()) { | |
566 | // see comments in SimpleLock::set_state_rejoin() and | |
567 | // ScatterLock::encode_state_for_rejoin() | |
568 | drop_locks(mdr.get()); | |
569 | mds->wait_for_cluster_recovered(new C_MDS_RetryRequest(mdcache, mdr)); | |
9f95a23c | 570 | dout(10) << " rejoin recovering " << *lock << " " << *lock->get_parent() |
b32b8144 FG |
571 | << ", waiting for cluster recovered" << dendl; |
572 | marker.message = "rejoin recovering lock, waiting for cluster recovered"; | |
573 | return false; | |
7c673cae | 574 | } |
b32b8144 | 575 | } else { |
9f95a23c | 576 | lock->clear_need_recover(); |
7c673cae FG |
577 | } |
578 | } | |
579 | ||
9f95a23c TL |
580 | if (!rdlock_start(lock, mdr)) { |
581 | marker.message = "failed to rdlock, waiting"; | |
7c673cae | 582 | goto out; |
9f95a23c TL |
583 | } |
584 | dout(10) << " got rdlock on " << *lock << " " << *lock->get_parent() << dendl; | |
7c673cae | 585 | } |
7c673cae FG |
586 | } |
587 | ||
7c673cae FG |
588 | mdr->set_mds_stamp(ceph_clock_now()); |
589 | result = true; | |
590 | marker.message = "acquired locks"; | |
591 | ||
592 | out: | |
593 | issue_caps_set(issue_set); | |
594 | return result; | |
595 | } | |
596 | ||
224ce89b WB |
597 | void Locker::notify_freeze_waiter(MDSCacheObject *o) |
598 | { | |
599 | CDir *dir = NULL; | |
600 | if (CInode *in = dynamic_cast<CInode*>(o)) { | |
601 | if (!in->is_root()) | |
602 | dir = in->get_parent_dir(); | |
603 | } else if (CDentry *dn = dynamic_cast<CDentry*>(o)) { | |
604 | dir = dn->get_dir(); | |
605 | } else { | |
606 | dir = dynamic_cast<CDir*>(o); | |
11fdf7f2 | 607 | ceph_assert(dir); |
224ce89b WB |
608 | } |
609 | if (dir) { | |
610 | if (dir->is_freezing_dir()) | |
611 | mdcache->fragment_freeze_inc_num_waiters(dir); | |
612 | if (dir->is_freezing_tree()) { | |
613 | while (!dir->is_freezing_tree_root()) | |
614 | dir = dir->get_parent_dir(); | |
615 | mdcache->migrator->export_freeze_inc_num_waiters(dir); | |
616 | } | |
617 | } | |
618 | } | |
7c673cae FG |
619 | |
620 | void Locker::set_xlocks_done(MutationImpl *mut, bool skip_dentry) | |
621 | { | |
11fdf7f2 TL |
622 | for (const auto &p : mut->locks) { |
623 | if (!p.is_xlock()) | |
624 | continue; | |
625 | MDSCacheObject *obj = p.lock->get_parent(); | |
626 | ceph_assert(obj->is_auth()); | |
7c673cae | 627 | if (skip_dentry && |
11fdf7f2 | 628 | (p.lock->get_type() == CEPH_LOCK_DN || p.lock->get_type() == CEPH_LOCK_DVERSION)) |
7c673cae | 629 | continue; |
11fdf7f2 TL |
630 | dout(10) << "set_xlocks_done on " << *p.lock << " " << *obj << dendl; |
631 | p.lock->set_xlock_done(); | |
7c673cae FG |
632 | } |
633 | } | |
634 | ||
11fdf7f2 TL |
635 | void Locker::_drop_locks(MutationImpl *mut, set<CInode*> *pneed_issue, |
636 | bool drop_rdlocks) | |
7c673cae | 637 | { |
f67539c2 | 638 | set<mds_rank_t> peers; |
7c673cae | 639 | |
11fdf7f2 TL |
640 | for (auto it = mut->locks.begin(); it != mut->locks.end(); ) { |
641 | SimpleLock *lock = it->lock; | |
642 | MDSCacheObject *obj = lock->get_parent(); | |
643 | ||
644 | if (it->is_xlock()) { | |
645 | if (obj->is_auth()) { | |
646 | bool ni = false; | |
647 | xlock_finish(it++, mut, &ni); | |
648 | if (ni) | |
649 | pneed_issue->insert(static_cast<CInode*>(obj)); | |
650 | } else { | |
651 | ceph_assert(lock->get_sm()->can_remote_xlock); | |
f67539c2 | 652 | peers.insert(obj->authority().first); |
11fdf7f2 TL |
653 | lock->put_xlock(); |
654 | mut->locks.erase(it++); | |
655 | } | |
656 | } else if (it->is_wrlock() || it->is_remote_wrlock()) { | |
657 | if (it->is_remote_wrlock()) { | |
f67539c2 | 658 | peers.insert(it->wrlock_target); |
11fdf7f2 TL |
659 | it->clear_remote_wrlock(); |
660 | } | |
661 | if (it->is_wrlock()) { | |
662 | bool ni = false; | |
663 | wrlock_finish(it++, mut, &ni); | |
664 | if (ni) | |
665 | pneed_issue->insert(static_cast<CInode*>(obj)); | |
666 | } else { | |
667 | mut->locks.erase(it++); | |
668 | } | |
669 | } else if (drop_rdlocks && it->is_rdlock()) { | |
670 | bool ni = false; | |
671 | rdlock_finish(it++, mut, &ni); | |
672 | if (ni) | |
673 | pneed_issue->insert(static_cast<CInode*>(obj)); | |
674 | } else { | |
675 | ++it; | |
7c673cae | 676 | } |
7c673cae FG |
677 | } |
678 | ||
9f95a23c TL |
679 | if (drop_rdlocks) { |
680 | if (mut->lock_cache) { | |
681 | put_lock_cache(mut->lock_cache); | |
682 | mut->lock_cache = nullptr; | |
683 | } | |
684 | } | |
685 | ||
f67539c2 | 686 | for (set<mds_rank_t>::iterator p = peers.begin(); p != peers.end(); ++p) { |
7c673cae FG |
687 | if (!mds->is_cluster_degraded() || |
688 | mds->mdsmap->get_state(*p) >= MDSMap::STATE_REJOIN) { | |
689 | dout(10) << "_drop_non_rdlocks dropping remote locks on mds." << *p << dendl; | |
f67539c2 TL |
690 | auto peerreq = make_message<MMDSPeerRequest>(mut->reqid, mut->attempt, |
691 | MMDSPeerRequest::OP_DROPLOCKS); | |
692 | mds->send_message_mds(peerreq, *p); | |
7c673cae FG |
693 | } |
694 | } | |
695 | } | |
696 | ||
697 | void Locker::cancel_locking(MutationImpl *mut, set<CInode*> *pneed_issue) | |
698 | { | |
699 | SimpleLock *lock = mut->locking; | |
11fdf7f2 | 700 | ceph_assert(lock); |
7c673cae FG |
701 | dout(10) << "cancel_locking " << *lock << " on " << *mut << dendl; |
702 | ||
703 | if (lock->get_parent()->is_auth()) { | |
704 | bool need_issue = false; | |
705 | if (lock->get_state() == LOCK_PREXLOCK) { | |
706 | _finish_xlock(lock, -1, &need_issue); | |
a8e16298 | 707 | } else if (lock->get_state() == LOCK_LOCK_XLOCK) { |
7c673cae FG |
708 | lock->set_state(LOCK_XLOCKDONE); |
709 | eval_gather(lock, true, &need_issue); | |
710 | } | |
711 | if (need_issue) | |
712 | pneed_issue->insert(static_cast<CInode *>(lock->get_parent())); | |
713 | } | |
714 | mut->finish_locking(lock); | |
715 | } | |
716 | ||
717 | void Locker::drop_locks(MutationImpl *mut, set<CInode*> *pneed_issue) | |
718 | { | |
719 | // leftover locks | |
720 | set<CInode*> my_need_issue; | |
721 | if (!pneed_issue) | |
722 | pneed_issue = &my_need_issue; | |
723 | ||
724 | if (mut->locking) | |
725 | cancel_locking(mut, pneed_issue); | |
11fdf7f2 | 726 | _drop_locks(mut, pneed_issue, true); |
7c673cae FG |
727 | |
728 | if (pneed_issue == &my_need_issue) | |
729 | issue_caps_set(*pneed_issue); | |
9f95a23c | 730 | mut->locking_state = 0; |
7c673cae FG |
731 | } |
732 | ||
733 | void Locker::drop_non_rdlocks(MutationImpl *mut, set<CInode*> *pneed_issue) | |
734 | { | |
735 | set<CInode*> my_need_issue; | |
736 | if (!pneed_issue) | |
737 | pneed_issue = &my_need_issue; | |
738 | ||
11fdf7f2 | 739 | _drop_locks(mut, pneed_issue, false); |
7c673cae FG |
740 | |
741 | if (pneed_issue == &my_need_issue) | |
742 | issue_caps_set(*pneed_issue); | |
743 | } | |
744 | ||
b32b8144 | 745 | void Locker::drop_rdlocks_for_early_reply(MutationImpl *mut) |
7c673cae | 746 | { |
b32b8144 | 747 | set<CInode*> need_issue; |
7c673cae | 748 | |
11fdf7f2 TL |
749 | for (auto it = mut->locks.begin(); it != mut->locks.end(); ) { |
750 | if (!it->is_rdlock()) { | |
751 | ++it; | |
752 | continue; | |
753 | } | |
754 | SimpleLock *lock = it->lock; | |
b32b8144 FG |
755 | // make later mksnap/setlayout (at other mds) wait for this unsafe request |
756 | if (lock->get_type() == CEPH_LOCK_ISNAP || | |
11fdf7f2 TL |
757 | lock->get_type() == CEPH_LOCK_IPOLICY) { |
758 | ++it; | |
b32b8144 | 759 | continue; |
11fdf7f2 | 760 | } |
b32b8144 | 761 | bool ni = false; |
11fdf7f2 | 762 | rdlock_finish(it++, mut, &ni); |
b32b8144 FG |
763 | if (ni) |
764 | need_issue.insert(static_cast<CInode*>(lock->get_parent())); | |
765 | } | |
7c673cae | 766 | |
b32b8144 | 767 | issue_caps_set(need_issue); |
7c673cae FG |
768 | } |
769 | ||
a8e16298 TL |
770 | void Locker::drop_locks_for_fragment_unfreeze(MutationImpl *mut) |
771 | { | |
772 | set<CInode*> need_issue; | |
773 | ||
774 | for (auto it = mut->locks.begin(); it != mut->locks.end(); ) { | |
11fdf7f2 | 775 | SimpleLock *lock = it->lock; |
a8e16298 | 776 | if (lock->get_type() == CEPH_LOCK_IDFT) { |
11fdf7f2 | 777 | ++it; |
a8e16298 TL |
778 | continue; |
779 | } | |
780 | bool ni = false; | |
11fdf7f2 | 781 | wrlock_finish(it++, mut, &ni); |
a8e16298 TL |
782 | if (ni) |
783 | need_issue.insert(static_cast<CInode*>(lock->get_parent())); | |
784 | } | |
785 | issue_caps_set(need_issue); | |
786 | } | |
787 | ||
9f95a23c TL |
788 | class C_MDL_DropCache : public LockerContext { |
789 | MDLockCache *lock_cache; | |
790 | public: | |
791 | C_MDL_DropCache(Locker *l, MDLockCache *lc) : | |
792 | LockerContext(l), lock_cache(lc) { } | |
793 | void finish(int r) override { | |
794 | locker->drop_locks(lock_cache); | |
795 | lock_cache->cleanup(); | |
796 | delete lock_cache; | |
797 | } | |
798 | }; | |
799 | ||
800 | void Locker::put_lock_cache(MDLockCache* lock_cache) | |
801 | { | |
802 | ceph_assert(lock_cache->ref > 0); | |
803 | if (--lock_cache->ref > 0) | |
804 | return; | |
805 | ||
806 | ceph_assert(lock_cache->invalidating); | |
807 | ||
1911f103 TL |
808 | lock_cache->detach_locks(); |
809 | ||
9f95a23c TL |
810 | CInode *diri = lock_cache->get_dir_inode(); |
811 | for (auto dir : lock_cache->auth_pinned_dirfrags) { | |
812 | if (dir->get_inode() != diri) | |
813 | continue; | |
814 | dir->enable_frozen_inode(); | |
815 | } | |
816 | ||
817 | mds->queue_waiter(new C_MDL_DropCache(this, lock_cache)); | |
818 | } | |
819 | ||
820 | int Locker::get_cap_bit_for_lock_cache(int op) | |
821 | { | |
822 | switch(op) { | |
823 | case CEPH_MDS_OP_CREATE: | |
824 | return CEPH_CAP_DIR_CREATE; | |
825 | case CEPH_MDS_OP_UNLINK: | |
826 | return CEPH_CAP_DIR_UNLINK; | |
827 | default: | |
828 | ceph_assert(0 == "unsupported operation"); | |
829 | return 0; | |
830 | } | |
831 | } | |
832 | ||
833 | void Locker::invalidate_lock_cache(MDLockCache *lock_cache) | |
834 | { | |
835 | ceph_assert(lock_cache->item_cap_lock_cache.is_on_list()); | |
836 | if (lock_cache->invalidating) { | |
837 | ceph_assert(!lock_cache->client_cap); | |
838 | } else { | |
839 | lock_cache->invalidating = true; | |
1911f103 | 840 | lock_cache->detach_dirfrags(); |
9f95a23c TL |
841 | } |
842 | ||
843 | Capability *cap = lock_cache->client_cap; | |
844 | if (cap) { | |
845 | int cap_bit = get_cap_bit_for_lock_cache(lock_cache->opcode); | |
846 | cap->clear_lock_cache_allowed(cap_bit); | |
847 | if (cap->issued() & cap_bit) | |
848 | issue_caps(lock_cache->get_dir_inode(), cap); | |
849 | else | |
850 | cap = nullptr; | |
851 | } | |
852 | ||
853 | if (!cap) { | |
854 | lock_cache->item_cap_lock_cache.remove_myself(); | |
855 | put_lock_cache(lock_cache); | |
856 | } | |
857 | } | |
858 | ||
859 | void Locker::eval_lock_caches(Capability *cap) | |
860 | { | |
861 | for (auto p = cap->lock_caches.begin(); !p.end(); ) { | |
862 | MDLockCache *lock_cache = *p; | |
863 | ++p; | |
864 | if (!lock_cache->invalidating) | |
865 | continue; | |
866 | int cap_bit = get_cap_bit_for_lock_cache(lock_cache->opcode); | |
867 | if (!(cap->issued() & cap_bit)) { | |
868 | lock_cache->item_cap_lock_cache.remove_myself(); | |
869 | put_lock_cache(lock_cache); | |
870 | } | |
871 | } | |
872 | } | |
873 | ||
874 | // ask lock caches to release auth pins | |
875 | void Locker::invalidate_lock_caches(CDir *dir) | |
876 | { | |
877 | dout(10) << "invalidate_lock_caches on " << *dir << dendl; | |
878 | auto &lock_caches = dir->lock_caches_with_auth_pins; | |
879 | while (!lock_caches.empty()) { | |
880 | invalidate_lock_cache(lock_caches.front()->parent); | |
881 | } | |
882 | } | |
883 | ||
884 | // ask lock caches to release locks | |
885 | void Locker::invalidate_lock_caches(SimpleLock *lock) | |
886 | { | |
887 | dout(10) << "invalidate_lock_caches " << *lock << " on " << *lock->get_parent() << dendl; | |
1911f103 TL |
888 | if (lock->is_cached()) { |
889 | auto&& lock_caches = lock->get_active_caches(); | |
890 | for (auto& lc : lock_caches) | |
891 | invalidate_lock_cache(lc); | |
9f95a23c TL |
892 | } |
893 | } | |
894 | ||
895 | void Locker::create_lock_cache(MDRequestRef& mdr, CInode *diri, file_layout_t *dir_layout) | |
896 | { | |
897 | if (mdr->lock_cache) | |
898 | return; | |
899 | ||
900 | client_t client = mdr->get_client(); | |
901 | int opcode = mdr->client_request->get_op(); | |
902 | dout(10) << "create_lock_cache for client." << client << "/" << ceph_mds_op_name(opcode)<< " on " << *diri << dendl; | |
903 | ||
904 | if (!diri->is_auth()) { | |
905 | dout(10) << " dir inode is not auth, noop" << dendl; | |
906 | return; | |
907 | } | |
908 | ||
f67539c2 TL |
909 | if (mdr->has_more() && !mdr->more()->peers.empty()) { |
910 | dout(10) << " there are peers requests for " << *mdr << ", noop" << dendl; | |
9f95a23c TL |
911 | return; |
912 | } | |
913 | ||
914 | Capability *cap = diri->get_client_cap(client); | |
915 | if (!cap) { | |
916 | dout(10) << " there is no cap for client." << client << ", noop" << dendl; | |
917 | return; | |
918 | } | |
919 | ||
920 | for (auto p = cap->lock_caches.begin(); !p.end(); ++p) { | |
921 | if ((*p)->opcode == opcode) { | |
922 | dout(10) << " lock cache already exists for " << ceph_mds_op_name(opcode) << ", noop" << dendl; | |
923 | return; | |
924 | } | |
925 | } | |
926 | ||
927 | set<MDSCacheObject*> ancestors; | |
928 | for (CInode *in = diri; ; ) { | |
929 | CDentry *pdn = in->get_projected_parent_dn(); | |
930 | if (!pdn) | |
931 | break; | |
932 | // ancestors.insert(pdn); | |
933 | in = pdn->get_dir()->get_inode(); | |
934 | ancestors.insert(in); | |
935 | } | |
936 | ||
937 | for (auto& p : mdr->object_states) { | |
938 | if (p.first != diri && !ancestors.count(p.first)) | |
939 | continue; | |
940 | auto& stat = p.second; | |
941 | if (stat.auth_pinned) { | |
942 | if (!p.first->can_auth_pin()) { | |
943 | dout(10) << " can't auth_pin(freezing?) lock parent " << *p.first << ", noop" << dendl; | |
944 | return; | |
945 | } | |
946 | if (CInode *in = dynamic_cast<CInode*>(p.first); in->is_parent_projected()) { | |
947 | CDir *dir = in->get_projected_parent_dir(); | |
948 | if (!dir->can_auth_pin()) { | |
949 | dout(10) << " can't auth_pin(!auth|freezing?) dirfrag " << *dir << ", noop" << dendl; | |
950 | return; | |
951 | } | |
952 | } | |
953 | } | |
954 | } | |
955 | ||
956 | std::vector<CDir*> dfv; | |
957 | dfv.reserve(diri->get_num_dirfrags()); | |
958 | ||
959 | diri->get_dirfrags(dfv); | |
960 | for (auto dir : dfv) { | |
961 | if (!dir->is_auth() || !dir->can_auth_pin()) { | |
962 | dout(10) << " can't auth_pin(!auth|freezing?) dirfrag " << *dir << ", noop" << dendl; | |
963 | return; | |
964 | } | |
965 | if (dir->is_any_freezing_or_frozen_inode()) { | |
966 | dout(10) << " there is freezing/frozen inode in " << *dir << ", noop" << dendl; | |
967 | return; | |
968 | } | |
969 | } | |
970 | ||
971 | for (auto& p : mdr->locks) { | |
972 | MDSCacheObject *obj = p.lock->get_parent(); | |
973 | if (obj != diri && !ancestors.count(obj)) | |
974 | continue; | |
975 | if (!p.lock->is_stable()) { | |
976 | dout(10) << " unstable " << *p.lock << " on " << *obj << ", noop" << dendl; | |
977 | return; | |
978 | } | |
979 | } | |
980 | ||
981 | auto lock_cache = new MDLockCache(cap, opcode); | |
982 | if (dir_layout) | |
983 | lock_cache->set_dir_layout(*dir_layout); | |
984 | cap->set_lock_cache_allowed(get_cap_bit_for_lock_cache(opcode)); | |
985 | ||
986 | for (auto dir : dfv) { | |
987 | // prevent subtree migration | |
988 | lock_cache->auth_pin(dir); | |
989 | // prevent frozen inode | |
990 | dir->disable_frozen_inode(); | |
991 | } | |
992 | ||
993 | for (auto& p : mdr->object_states) { | |
994 | if (p.first != diri && !ancestors.count(p.first)) | |
995 | continue; | |
996 | auto& stat = p.second; | |
997 | if (stat.auth_pinned) | |
998 | lock_cache->auth_pin(p.first); | |
999 | else | |
1000 | lock_cache->pin(p.first); | |
1001 | ||
1002 | if (CInode *in = dynamic_cast<CInode*>(p.first)) { | |
1003 | CDentry *pdn = in->get_projected_parent_dn(); | |
1004 | if (pdn) | |
1005 | dfv.push_back(pdn->get_dir()); | |
1006 | } else if (CDentry *dn = dynamic_cast<CDentry*>(p.first)) { | |
1007 | dfv.push_back(dn->get_dir()); | |
1008 | } else { | |
1009 | ceph_assert(0 == "unknown type of lock parent"); | |
1010 | } | |
1011 | } | |
1012 | lock_cache->attach_dirfrags(std::move(dfv)); | |
1013 | ||
1014 | for (auto it = mdr->locks.begin(); it != mdr->locks.end(); ) { | |
1015 | MDSCacheObject *obj = it->lock->get_parent(); | |
1016 | if (obj != diri && !ancestors.count(obj)) { | |
1017 | ++it; | |
1018 | continue; | |
1019 | } | |
1020 | unsigned lock_flag = 0; | |
1021 | if (it->is_wrlock()) { | |
1022 | // skip wrlocks that were added by MDCache::predirty_journal_parent() | |
1023 | if (obj == diri) | |
1024 | lock_flag = MutationImpl::LockOp::WRLOCK; | |
1025 | } else { | |
1026 | ceph_assert(it->is_rdlock()); | |
1027 | lock_flag = MutationImpl::LockOp::RDLOCK; | |
1028 | } | |
1029 | if (lock_flag) { | |
1030 | lock_cache->emplace_lock(it->lock, lock_flag); | |
1031 | mdr->locks.erase(it++); | |
1032 | } else { | |
1033 | ++it; | |
1034 | } | |
1035 | } | |
1036 | lock_cache->attach_locks(); | |
1037 | ||
1038 | lock_cache->ref++; | |
1039 | mdr->lock_cache = lock_cache; | |
1040 | } | |
1041 | ||
1042 | bool Locker::find_and_attach_lock_cache(MDRequestRef& mdr, CInode *diri) | |
1043 | { | |
1044 | if (mdr->lock_cache) | |
1045 | return true; | |
1046 | ||
1047 | Capability *cap = diri->get_client_cap(mdr->get_client()); | |
1048 | if (!cap) | |
1049 | return false; | |
1050 | ||
1051 | int opcode = mdr->client_request->get_op(); | |
1052 | for (auto p = cap->lock_caches.begin(); !p.end(); ++p) { | |
1053 | MDLockCache *lock_cache = *p; | |
1054 | if (lock_cache->opcode == opcode) { | |
1055 | dout(10) << "found lock cache for " << ceph_mds_op_name(opcode) << " on " << *diri << dendl; | |
1056 | mdr->lock_cache = lock_cache; | |
1057 | mdr->lock_cache->ref++; | |
1058 | return true; | |
1059 | } | |
1060 | } | |
1061 | return false; | |
1062 | } | |
1063 | ||
7c673cae FG |
1064 | // generics |
1065 | ||
11fdf7f2 | 1066 | void Locker::eval_gather(SimpleLock *lock, bool first, bool *pneed_issue, MDSContext::vec *pfinishers) |
7c673cae FG |
1067 | { |
1068 | dout(10) << "eval_gather " << *lock << " on " << *lock->get_parent() << dendl; | |
11fdf7f2 | 1069 | ceph_assert(!lock->is_stable()); |
7c673cae FG |
1070 | |
1071 | int next = lock->get_next_state(); | |
1072 | ||
1073 | CInode *in = 0; | |
1074 | bool caps = lock->get_cap_shift(); | |
1075 | if (lock->get_type() != CEPH_LOCK_DN) | |
1076 | in = static_cast<CInode *>(lock->get_parent()); | |
1077 | ||
1078 | bool need_issue = false; | |
1079 | ||
1080 | int loner_issued = 0, other_issued = 0, xlocker_issued = 0; | |
11fdf7f2 | 1081 | ceph_assert(!caps || in != NULL); |
7c673cae FG |
1082 | if (caps && in->is_head()) { |
1083 | in->get_caps_issued(&loner_issued, &other_issued, &xlocker_issued, | |
1084 | lock->get_cap_shift(), lock->get_cap_mask()); | |
1085 | dout(10) << " next state is " << lock->get_state_name(next) | |
1086 | << " issued/allows loner " << gcap_string(loner_issued) | |
1087 | << "/" << gcap_string(lock->gcaps_allowed(CAP_LONER, next)) | |
1088 | << " xlocker " << gcap_string(xlocker_issued) | |
1089 | << "/" << gcap_string(lock->gcaps_allowed(CAP_XLOCKER, next)) | |
1090 | << " other " << gcap_string(other_issued) | |
1091 | << "/" << gcap_string(lock->gcaps_allowed(CAP_ANY, next)) | |
1092 | << dendl; | |
1093 | ||
1094 | if (first && ((~lock->gcaps_allowed(CAP_ANY, next) & other_issued) || | |
1095 | (~lock->gcaps_allowed(CAP_LONER, next) & loner_issued) || | |
1096 | (~lock->gcaps_allowed(CAP_XLOCKER, next) & xlocker_issued))) | |
1097 | need_issue = true; | |
1098 | } | |
1099 | ||
1100 | #define IS_TRUE_AND_LT_AUTH(x, auth) (x && ((auth && x <= AUTH) || (!auth && x < AUTH))) | |
1101 | bool auth = lock->get_parent()->is_auth(); | |
1102 | if (!lock->is_gathering() && | |
1103 | (IS_TRUE_AND_LT_AUTH(lock->get_sm()->states[next].can_rdlock, auth) || !lock->is_rdlocked()) && | |
1104 | (IS_TRUE_AND_LT_AUTH(lock->get_sm()->states[next].can_wrlock, auth) || !lock->is_wrlocked()) && | |
1105 | (IS_TRUE_AND_LT_AUTH(lock->get_sm()->states[next].can_xlock, auth) || !lock->is_xlocked()) && | |
1106 | (IS_TRUE_AND_LT_AUTH(lock->get_sm()->states[next].can_lease, auth) || !lock->is_leased()) && | |
1107 | !(lock->get_parent()->is_auth() && lock->is_flushing()) && // i.e. wait for scatter_writebehind! | |
1108 | (!caps || ((~lock->gcaps_allowed(CAP_ANY, next) & other_issued) == 0 && | |
1109 | (~lock->gcaps_allowed(CAP_LONER, next) & loner_issued) == 0 && | |
1110 | (~lock->gcaps_allowed(CAP_XLOCKER, next) & xlocker_issued) == 0)) && | |
1111 | lock->get_state() != LOCK_SYNC_MIX2 && // these states need an explicit trigger from the auth mds | |
1112 | lock->get_state() != LOCK_MIX_SYNC2 | |
1113 | ) { | |
1114 | dout(7) << "eval_gather finished gather on " << *lock | |
1115 | << " on " << *lock->get_parent() << dendl; | |
1116 | ||
1117 | if (lock->get_sm() == &sm_filelock) { | |
11fdf7f2 | 1118 | ceph_assert(in); |
7c673cae FG |
1119 | if (in->state_test(CInode::STATE_RECOVERING)) { |
1120 | dout(7) << "eval_gather finished gather, but still recovering" << dendl; | |
1121 | return; | |
1122 | } else if (in->state_test(CInode::STATE_NEEDSRECOVER)) { | |
1123 | dout(7) << "eval_gather finished gather, but need to recover" << dendl; | |
1124 | mds->mdcache->queue_file_recover(in); | |
1125 | mds->mdcache->do_file_recover(); | |
1126 | return; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | if (!lock->get_parent()->is_auth()) { | |
1131 | // replica: tell auth | |
1132 | mds_rank_t auth = lock->get_parent()->authority().first; | |
1133 | ||
1134 | if (lock->get_parent()->is_rejoining() && | |
1135 | mds->mdsmap->get_state(auth) == MDSMap::STATE_REJOIN) { | |
1136 | dout(7) << "eval_gather finished gather, but still rejoining " | |
1137 | << *lock->get_parent() << dendl; | |
1138 | return; | |
1139 | } | |
1140 | ||
1141 | if (!mds->is_cluster_degraded() || | |
1142 | mds->mdsmap->get_state(auth) >= MDSMap::STATE_REJOIN) { | |
1143 | switch (lock->get_state()) { | |
1144 | case LOCK_SYNC_LOCK: | |
9f95a23c | 1145 | mds->send_message_mds(make_message<MLock>(lock, LOCK_AC_LOCKACK, mds->get_nodeid()), auth); |
7c673cae FG |
1146 | break; |
1147 | ||
1148 | case LOCK_MIX_SYNC: | |
1149 | { | |
9f95a23c | 1150 | auto reply = make_message<MLock>(lock, LOCK_AC_SYNCACK, mds->get_nodeid()); |
7c673cae FG |
1151 | lock->encode_locked_state(reply->get_data()); |
1152 | mds->send_message_mds(reply, auth); | |
1153 | next = LOCK_MIX_SYNC2; | |
1154 | (static_cast<ScatterLock *>(lock))->start_flush(); | |
1155 | } | |
1156 | break; | |
1157 | ||
1158 | case LOCK_MIX_SYNC2: | |
1159 | (static_cast<ScatterLock *>(lock))->finish_flush(); | |
1160 | (static_cast<ScatterLock *>(lock))->clear_flushed(); | |
1161 | ||
1162 | case LOCK_SYNC_MIX2: | |
1163 | // do nothing, we already acked | |
1164 | break; | |
1165 | ||
1166 | case LOCK_SYNC_MIX: | |
1167 | { | |
9f95a23c | 1168 | auto reply = make_message<MLock>(lock, LOCK_AC_MIXACK, mds->get_nodeid()); |
7c673cae FG |
1169 | mds->send_message_mds(reply, auth); |
1170 | next = LOCK_SYNC_MIX2; | |
1171 | } | |
1172 | break; | |
1173 | ||
1174 | case LOCK_MIX_LOCK: | |
1175 | { | |
1176 | bufferlist data; | |
1177 | lock->encode_locked_state(data); | |
9f95a23c | 1178 | mds->send_message_mds(make_message<MLock>(lock, LOCK_AC_LOCKACK, mds->get_nodeid(), data), auth); |
7c673cae FG |
1179 | (static_cast<ScatterLock *>(lock))->start_flush(); |
1180 | // we'll get an AC_LOCKFLUSHED to complete | |
1181 | } | |
1182 | break; | |
1183 | ||
1184 | default: | |
1185 | ceph_abort(); | |
1186 | } | |
1187 | } | |
1188 | } else { | |
1189 | // auth | |
1190 | ||
1191 | // once the first (local) stage of mix->lock gather complete we can | |
1192 | // gather from replicas | |
1193 | if (lock->get_state() == LOCK_MIX_LOCK && | |
1194 | lock->get_parent()->is_replicated()) { | |
1195 | dout(10) << " finished (local) gather for mix->lock, now gathering from replicas" << dendl; | |
1196 | send_lock_message(lock, LOCK_AC_LOCK); | |
1197 | lock->init_gather(); | |
1198 | lock->set_state(LOCK_MIX_LOCK2); | |
1199 | return; | |
1200 | } | |
1201 | ||
1202 | if (lock->is_dirty() && !lock->is_flushed()) { | |
1203 | scatter_writebehind(static_cast<ScatterLock *>(lock)); | |
7c673cae FG |
1204 | return; |
1205 | } | |
1206 | lock->clear_flushed(); | |
1207 | ||
1208 | switch (lock->get_state()) { | |
1209 | // to mixed | |
1210 | case LOCK_TSYN_MIX: | |
1211 | case LOCK_SYNC_MIX: | |
1212 | case LOCK_EXCL_MIX: | |
b32b8144 | 1213 | case LOCK_XSYN_MIX: |
7c673cae FG |
1214 | in->start_scatter(static_cast<ScatterLock *>(lock)); |
1215 | if (lock->get_parent()->is_replicated()) { | |
1216 | bufferlist softdata; | |
1217 | lock->encode_locked_state(softdata); | |
1218 | send_lock_message(lock, LOCK_AC_MIX, softdata); | |
1219 | } | |
1220 | (static_cast<ScatterLock *>(lock))->clear_scatter_wanted(); | |
1221 | break; | |
1222 | ||
1223 | case LOCK_XLOCK: | |
1224 | case LOCK_XLOCKDONE: | |
1225 | if (next != LOCK_SYNC) | |
1226 | break; | |
1227 | // fall-thru | |
1228 | ||
1229 | // to sync | |
1230 | case LOCK_EXCL_SYNC: | |
1231 | case LOCK_LOCK_SYNC: | |
1232 | case LOCK_MIX_SYNC: | |
1233 | case LOCK_XSYN_SYNC: | |
1234 | if (lock->get_parent()->is_replicated()) { | |
1235 | bufferlist softdata; | |
1236 | lock->encode_locked_state(softdata); | |
1237 | send_lock_message(lock, LOCK_AC_SYNC, softdata); | |
1238 | } | |
1239 | break; | |
f38dd50b TL |
1240 | case LOCK_XLOCKSNAP: |
1241 | if (lock->get_sm() == &sm_filelock) { | |
1242 | int pending = lock->gcaps_allowed(CAP_ANY) || | |
1243 | lock->gcaps_allowed(CAP_LONER) || | |
1244 | lock->gcaps_allowed(CAP_XLOCKER); | |
1245 | int revoke = ~pending & (loner_issued | other_issued | xlocker_issued); | |
1246 | ||
1247 | // wait for 'Fb' to be revoked | |
1248 | if (revoke & CEPH_CAP_GBUFFER) { | |
1249 | return; | |
1250 | } | |
1251 | } | |
1252 | break; | |
7c673cae FG |
1253 | } |
1254 | ||
1255 | } | |
1256 | ||
1257 | lock->set_state(next); | |
1258 | ||
1259 | if (lock->get_parent()->is_auth() && | |
1260 | lock->is_stable()) | |
1261 | lock->get_parent()->auth_unpin(lock); | |
1262 | ||
1263 | // drop loner before doing waiters | |
1264 | if (caps && | |
1265 | in->is_head() && | |
1266 | in->is_auth() && | |
1267 | in->get_wanted_loner() != in->get_loner()) { | |
1268 | dout(10) << " trying to drop loner" << dendl; | |
1269 | if (in->try_drop_loner()) { | |
1270 | dout(10) << " dropped loner" << dendl; | |
1271 | need_issue = true; | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | if (pfinishers) | |
1276 | lock->take_waiting(SimpleLock::WAIT_STABLE|SimpleLock::WAIT_WR|SimpleLock::WAIT_RD|SimpleLock::WAIT_XLOCK, | |
1277 | *pfinishers); | |
1278 | else | |
1279 | lock->finish_waiters(SimpleLock::WAIT_STABLE|SimpleLock::WAIT_WR|SimpleLock::WAIT_RD|SimpleLock::WAIT_XLOCK); | |
1280 | ||
1281 | if (caps && in->is_head()) | |
1282 | need_issue = true; | |
1283 | ||
1284 | if (lock->get_parent()->is_auth() && | |
1285 | lock->is_stable()) | |
1286 | try_eval(lock, &need_issue); | |
1287 | } | |
1288 | ||
1289 | if (need_issue) { | |
1290 | if (pneed_issue) | |
1291 | *pneed_issue = true; | |
1292 | else if (in->is_head()) | |
1293 | issue_caps(in); | |
1294 | } | |
1295 | ||
1296 | } | |
1297 | ||
1298 | bool Locker::eval(CInode *in, int mask, bool caps_imported) | |
1299 | { | |
1300 | bool need_issue = caps_imported; | |
11fdf7f2 | 1301 | MDSContext::vec finishers; |
7c673cae FG |
1302 | |
1303 | dout(10) << "eval " << mask << " " << *in << dendl; | |
1304 | ||
1305 | // choose loner? | |
1306 | if (in->is_auth() && in->is_head()) { | |
b32b8144 FG |
1307 | client_t orig_loner = in->get_loner(); |
1308 | if (in->choose_ideal_loner()) { | |
1309 | dout(10) << "eval set loner: client." << orig_loner << " -> client." << in->get_loner() << dendl; | |
1310 | need_issue = true; | |
1311 | mask = -1; | |
1312 | } else if (in->get_wanted_loner() != in->get_loner()) { | |
1313 | dout(10) << "eval want loner: client." << in->get_wanted_loner() << " but failed to set it" << dendl; | |
1314 | mask = -1; | |
1315 | } | |
7c673cae FG |
1316 | } |
1317 | ||
1318 | retry: | |
1319 | if (mask & CEPH_LOCK_IFILE) | |
1320 | eval_any(&in->filelock, &need_issue, &finishers, caps_imported); | |
1321 | if (mask & CEPH_LOCK_IAUTH) | |
1322 | eval_any(&in->authlock, &need_issue, &finishers, caps_imported); | |
1323 | if (mask & CEPH_LOCK_ILINK) | |
1324 | eval_any(&in->linklock, &need_issue, &finishers, caps_imported); | |
1325 | if (mask & CEPH_LOCK_IXATTR) | |
1326 | eval_any(&in->xattrlock, &need_issue, &finishers, caps_imported); | |
1327 | if (mask & CEPH_LOCK_INEST) | |
1328 | eval_any(&in->nestlock, &need_issue, &finishers, caps_imported); | |
1329 | if (mask & CEPH_LOCK_IFLOCK) | |
1330 | eval_any(&in->flocklock, &need_issue, &finishers, caps_imported); | |
1331 | if (mask & CEPH_LOCK_IPOLICY) | |
1332 | eval_any(&in->policylock, &need_issue, &finishers, caps_imported); | |
1333 | ||
1334 | // drop loner? | |
1335 | if (in->is_auth() && in->is_head() && in->get_wanted_loner() != in->get_loner()) { | |
7c673cae | 1336 | if (in->try_drop_loner()) { |
7c673cae | 1337 | need_issue = true; |
7c673cae | 1338 | if (in->get_wanted_loner() >= 0) { |
20effc67 | 1339 | dout(10) << "eval end set loner to client." << in->get_wanted_loner() << dendl; |
b32b8144 | 1340 | bool ok = in->try_set_loner(); |
11fdf7f2 | 1341 | ceph_assert(ok); |
b32b8144 FG |
1342 | mask = -1; |
1343 | goto retry; | |
7c673cae FG |
1344 | } |
1345 | } | |
1346 | } | |
1347 | ||
1348 | finish_contexts(g_ceph_context, finishers); | |
1349 | ||
1350 | if (need_issue && in->is_head()) | |
1351 | issue_caps(in); | |
1352 | ||
1353 | dout(10) << "eval done" << dendl; | |
1354 | return need_issue; | |
1355 | } | |
1356 | ||
1357 | class C_Locker_Eval : public LockerContext { | |
1358 | MDSCacheObject *p; | |
1359 | int mask; | |
1360 | public: | |
1361 | C_Locker_Eval(Locker *l, MDSCacheObject *pp, int m) : LockerContext(l), p(pp), mask(m) { | |
1362 | // We are used as an MDSCacheObject waiter, so should | |
1363 | // only be invoked by someone already holding the big lock. | |
9f95a23c | 1364 | ceph_assert(ceph_mutex_is_locked_by_me(locker->mds->mds_lock)); |
7c673cae FG |
1365 | p->get(MDSCacheObject::PIN_PTRWAITER); |
1366 | } | |
1367 | void finish(int r) override { | |
1368 | locker->try_eval(p, mask); | |
1369 | p->put(MDSCacheObject::PIN_PTRWAITER); | |
1370 | } | |
1371 | }; | |
1372 | ||
1373 | void Locker::try_eval(MDSCacheObject *p, int mask) | |
1374 | { | |
1375 | // unstable and ambiguous auth? | |
1376 | if (p->is_ambiguous_auth()) { | |
1377 | dout(7) << "try_eval ambiguous auth, waiting on " << *p << dendl; | |
1378 | p->add_waiter(MDSCacheObject::WAIT_SINGLEAUTH, new C_Locker_Eval(this, p, mask)); | |
1379 | return; | |
1380 | } | |
1381 | ||
1382 | if (p->is_auth() && p->is_frozen()) { | |
1383 | dout(7) << "try_eval frozen, waiting on " << *p << dendl; | |
1384 | p->add_waiter(MDSCacheObject::WAIT_UNFREEZE, new C_Locker_Eval(this, p, mask)); | |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | if (mask & CEPH_LOCK_DN) { | |
11fdf7f2 | 1389 | ceph_assert(mask == CEPH_LOCK_DN); |
7c673cae FG |
1390 | bool need_issue = false; // ignore this, no caps on dentries |
1391 | CDentry *dn = static_cast<CDentry *>(p); | |
1392 | eval_any(&dn->lock, &need_issue); | |
1393 | } else { | |
1394 | CInode *in = static_cast<CInode *>(p); | |
1395 | eval(in, mask); | |
1396 | } | |
1397 | } | |
1398 | ||
1399 | void Locker::try_eval(SimpleLock *lock, bool *pneed_issue) | |
1400 | { | |
1401 | MDSCacheObject *p = lock->get_parent(); | |
1402 | ||
1403 | // unstable and ambiguous auth? | |
1404 | if (p->is_ambiguous_auth()) { | |
1405 | dout(7) << "try_eval " << *lock << " ambiguousauth, waiting on " << *p << dendl; | |
1406 | p->add_waiter(MDSCacheObject::WAIT_SINGLEAUTH, new C_Locker_Eval(this, p, lock->get_type())); | |
1407 | return; | |
1408 | } | |
1409 | ||
1410 | if (!p->is_auth()) { | |
1411 | dout(7) << "try_eval " << *lock << " not auth for " << *p << dendl; | |
1412 | return; | |
1413 | } | |
1414 | ||
1415 | if (p->is_frozen()) { | |
1416 | dout(7) << "try_eval " << *lock << " frozen, waiting on " << *p << dendl; | |
1417 | p->add_waiter(MDSCacheObject::WAIT_UNFREEZE, new C_Locker_Eval(this, p, lock->get_type())); | |
1418 | return; | |
1419 | } | |
1420 | ||
1421 | /* | |
1422 | * We could have a situation like: | |
1423 | * | |
1424 | * - mds A authpins item on mds B | |
1425 | * - mds B starts to freeze tree containing item | |
1426 | * - mds A tries wrlock_start on A, sends REQSCATTER to B | |
1427 | * - mds B lock is unstable, sets scatter_wanted | |
1428 | * - mds B lock stabilizes, calls try_eval. | |
1429 | * | |
1430 | * We can defer while freezing without causing a deadlock. Honor | |
1431 | * scatter_wanted flag here. This will never get deferred by the | |
f67539c2 | 1432 | * checks above due to the auth_pin held by the leader. |
7c673cae FG |
1433 | */ |
1434 | if (lock->is_scatterlock()) { | |
1435 | ScatterLock *slock = static_cast<ScatterLock *>(lock); | |
1436 | if (slock->get_scatter_wanted() && | |
1437 | slock->get_state() != LOCK_MIX) { | |
1438 | scatter_mix(slock, pneed_issue); | |
1439 | if (!lock->is_stable()) | |
1440 | return; | |
1441 | } else if (slock->get_unscatter_wanted() && | |
1442 | slock->get_state() != LOCK_LOCK) { | |
1443 | simple_lock(slock, pneed_issue); | |
1444 | if (!lock->is_stable()) { | |
1445 | return; | |
1446 | } | |
1447 | } | |
1448 | } | |
1449 | ||
11fdf7f2 TL |
1450 | if (lock->get_type() != CEPH_LOCK_DN && |
1451 | lock->get_type() != CEPH_LOCK_ISNAP && | |
9f95a23c | 1452 | lock->get_type() != CEPH_LOCK_IPOLICY && |
11fdf7f2 | 1453 | p->is_freezing()) { |
7c673cae FG |
1454 | dout(7) << "try_eval " << *lock << " freezing, waiting on " << *p << dendl; |
1455 | p->add_waiter(MDSCacheObject::WAIT_UNFREEZE, new C_Locker_Eval(this, p, lock->get_type())); | |
1456 | return; | |
1457 | } | |
1458 | ||
1459 | eval(lock, pneed_issue); | |
1460 | } | |
1461 | ||
1462 | void Locker::eval_cap_gather(CInode *in, set<CInode*> *issue_set) | |
1463 | { | |
1464 | bool need_issue = false; | |
11fdf7f2 | 1465 | MDSContext::vec finishers; |
7c673cae FG |
1466 | |
1467 | // kick locks now | |
1468 | if (!in->filelock.is_stable()) | |
1469 | eval_gather(&in->filelock, false, &need_issue, &finishers); | |
1470 | if (!in->authlock.is_stable()) | |
1471 | eval_gather(&in->authlock, false, &need_issue, &finishers); | |
1472 | if (!in->linklock.is_stable()) | |
1473 | eval_gather(&in->linklock, false, &need_issue, &finishers); | |
1474 | if (!in->xattrlock.is_stable()) | |
1475 | eval_gather(&in->xattrlock, false, &need_issue, &finishers); | |
1476 | ||
1477 | if (need_issue && in->is_head()) { | |
1478 | if (issue_set) | |
1479 | issue_set->insert(in); | |
1480 | else | |
1481 | issue_caps(in); | |
1482 | } | |
1483 | ||
1484 | finish_contexts(g_ceph_context, finishers); | |
1485 | } | |
1486 | ||
1487 | void Locker::eval_scatter_gathers(CInode *in) | |
1488 | { | |
1489 | bool need_issue = false; | |
11fdf7f2 | 1490 | MDSContext::vec finishers; |
7c673cae FG |
1491 | |
1492 | dout(10) << "eval_scatter_gathers " << *in << dendl; | |
1493 | ||
1494 | // kick locks now | |
1495 | if (!in->filelock.is_stable()) | |
1496 | eval_gather(&in->filelock, false, &need_issue, &finishers); | |
1497 | if (!in->nestlock.is_stable()) | |
1498 | eval_gather(&in->nestlock, false, &need_issue, &finishers); | |
1499 | if (!in->dirfragtreelock.is_stable()) | |
1500 | eval_gather(&in->dirfragtreelock, false, &need_issue, &finishers); | |
1501 | ||
1502 | if (need_issue && in->is_head()) | |
1503 | issue_caps(in); | |
1504 | ||
1505 | finish_contexts(g_ceph_context, finishers); | |
1506 | } | |
1507 | ||
1508 | void Locker::eval(SimpleLock *lock, bool *need_issue) | |
1509 | { | |
1510 | switch (lock->get_type()) { | |
1511 | case CEPH_LOCK_IFILE: | |
1512 | return file_eval(static_cast<ScatterLock*>(lock), need_issue); | |
1513 | case CEPH_LOCK_IDFT: | |
1514 | case CEPH_LOCK_INEST: | |
1515 | return scatter_eval(static_cast<ScatterLock*>(lock), need_issue); | |
1516 | default: | |
1517 | return simple_eval(lock, need_issue); | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | ||
1522 | // ------------------ | |
1523 | // rdlock | |
1524 | ||
1525 | bool Locker::_rdlock_kick(SimpleLock *lock, bool as_anon) | |
1526 | { | |
1527 | // kick the lock | |
1528 | if (lock->is_stable()) { | |
1529 | if (lock->get_parent()->is_auth()) { | |
1530 | if (lock->get_sm() == &sm_scatterlock) { | |
1531 | // not until tempsync is fully implemented | |
1532 | //if (lock->get_parent()->is_replicated()) | |
1533 | //scatter_tempsync((ScatterLock*)lock); | |
1534 | //else | |
1535 | simple_sync(lock); | |
1536 | } else if (lock->get_sm() == &sm_filelock) { | |
1537 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
1538 | if (lock->get_state() == LOCK_EXCL && | |
1539 | in->get_target_loner() >= 0 && | |
1540 | !in->is_dir() && !as_anon) // as_anon => caller wants SYNC, not XSYN | |
1541 | file_xsyn(lock); | |
1542 | else | |
1543 | simple_sync(lock); | |
1544 | } else | |
1545 | simple_sync(lock); | |
1546 | return true; | |
1547 | } else { | |
1548 | // request rdlock state change from auth | |
1549 | mds_rank_t auth = lock->get_parent()->authority().first; | |
1550 | if (!mds->is_cluster_degraded() || | |
1551 | mds->mdsmap->is_clientreplay_or_active_or_stopping(auth)) { | |
1552 | dout(10) << "requesting rdlock from auth on " | |
1553 | << *lock << " on " << *lock->get_parent() << dendl; | |
9f95a23c | 1554 | mds->send_message_mds(make_message<MLock>(lock, LOCK_AC_REQRDLOCK, mds->get_nodeid()), auth); |
7c673cae FG |
1555 | } |
1556 | return false; | |
1557 | } | |
1558 | } | |
1559 | if (lock->get_type() == CEPH_LOCK_IFILE) { | |
1560 | CInode *in = static_cast<CInode *>(lock->get_parent()); | |
1561 | if (in->state_test(CInode::STATE_RECOVERING)) { | |
1562 | mds->mdcache->recovery_queue.prioritize(in); | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | return false; | |
1567 | } | |
1568 | ||
9f95a23c | 1569 | bool Locker::rdlock_try(SimpleLock *lock, client_t client) |
7c673cae FG |
1570 | { |
1571 | dout(7) << "rdlock_try on " << *lock << " on " << *lock->get_parent() << dendl; | |
1572 | ||
1573 | // can read? grab ref. | |
1574 | if (lock->can_rdlock(client)) | |
1575 | return true; | |
1576 | ||
1577 | _rdlock_kick(lock, false); | |
1578 | ||
1579 | if (lock->can_rdlock(client)) | |
1580 | return true; | |
1581 | ||
7c673cae FG |
1582 | return false; |
1583 | } | |
1584 | ||
1585 | bool Locker::rdlock_start(SimpleLock *lock, MDRequestRef& mut, bool as_anon) | |
1586 | { | |
1587 | dout(7) << "rdlock_start on " << *lock << " on " << *lock->get_parent() << dendl; | |
1588 | ||
1589 | // client may be allowed to rdlock the same item it has xlocked. | |
1590 | // UNLESS someone passes in as_anon, or we're reading snapped version here. | |
1591 | if (mut->snapid != CEPH_NOSNAP) | |
1592 | as_anon = true; | |
1593 | client_t client = as_anon ? -1 : mut->get_client(); | |
1594 | ||
1595 | CInode *in = 0; | |
1596 | if (lock->get_type() != CEPH_LOCK_DN) | |
1597 | in = static_cast<CInode *>(lock->get_parent()); | |
1598 | ||
1599 | /* | |
1600 | if (!lock->get_parent()->is_auth() && | |
1601 | lock->fw_rdlock_to_auth()) { | |
1602 | mdcache->request_forward(mut, lock->get_parent()->authority().first); | |
1603 | return false; | |
1604 | } | |
1605 | */ | |
1606 | ||
1607 | while (1) { | |
1608 | // can read? grab ref. | |
1609 | if (lock->can_rdlock(client)) { | |
1610 | lock->get_rdlock(); | |
9f95a23c | 1611 | mut->emplace_lock(lock, MutationImpl::LockOp::RDLOCK); |
7c673cae FG |
1612 | return true; |
1613 | } | |
1614 | ||
1615 | // hmm, wait a second. | |
1616 | if (in && !in->is_head() && in->is_auth() && | |
1617 | lock->get_state() == LOCK_SNAP_SYNC) { | |
1618 | // okay, we actually need to kick the head's lock to get ourselves synced up. | |
1619 | CInode *head = mdcache->get_inode(in->ino()); | |
11fdf7f2 | 1620 | ceph_assert(head); |
c07f9fc5 FG |
1621 | SimpleLock *hlock = head->get_lock(CEPH_LOCK_IFILE); |
1622 | if (hlock->get_state() == LOCK_SYNC) | |
1623 | hlock = head->get_lock(lock->get_type()); | |
1624 | ||
7c673cae FG |
1625 | if (hlock->get_state() != LOCK_SYNC) { |
1626 | dout(10) << "rdlock_start trying head inode " << *head << dendl; | |
c07f9fc5 | 1627 | if (!rdlock_start(hlock, mut, true)) // ** as_anon, no rdlock on EXCL ** |
7c673cae FG |
1628 | return false; |
1629 | // oh, check our lock again then | |
1630 | } | |
1631 | } | |
1632 | ||
1633 | if (!_rdlock_kick(lock, as_anon)) | |
1634 | break; | |
1635 | } | |
1636 | ||
1637 | // wait! | |
1638 | int wait_on; | |
1639 | if (lock->get_parent()->is_auth() && lock->is_stable()) | |
1640 | wait_on = SimpleLock::WAIT_RD; | |
1641 | else | |
1642 | wait_on = SimpleLock::WAIT_STABLE; // REQRDLOCK is ignored if lock is unstable, so we need to retry. | |
1643 | dout(7) << "rdlock_start waiting on " << *lock << " on " << *lock->get_parent() << dendl; | |
1644 | lock->add_waiter(wait_on, new C_MDS_RetryRequest(mdcache, mut)); | |
1645 | nudge_log(lock); | |
1646 | return false; | |
1647 | } | |
1648 | ||
1649 | void Locker::nudge_log(SimpleLock *lock) | |
1650 | { | |
1651 | dout(10) << "nudge_log " << *lock << " on " << *lock->get_parent() << dendl; | |
1652 | if (lock->get_parent()->is_auth() && lock->is_unstable_and_locked()) // as with xlockdone, or cap flush | |
1653 | mds->mdlog->flush(); | |
1654 | } | |
1655 | ||
11fdf7f2 | 1656 | void Locker::rdlock_finish(const MutationImpl::lock_iterator& it, MutationImpl *mut, bool *pneed_issue) |
7c673cae | 1657 | { |
11fdf7f2 TL |
1658 | ceph_assert(it->is_rdlock()); |
1659 | SimpleLock *lock = it->lock; | |
7c673cae FG |
1660 | // drop ref |
1661 | lock->put_rdlock(); | |
11fdf7f2 TL |
1662 | if (mut) |
1663 | mut->locks.erase(it); | |
7c673cae FG |
1664 | |
1665 | dout(7) << "rdlock_finish on " << *lock << " on " << *lock->get_parent() << dendl; | |
1666 | ||
1667 | // last one? | |
1668 | if (!lock->is_rdlocked()) { | |
1669 | if (!lock->is_stable()) | |
1670 | eval_gather(lock, false, pneed_issue); | |
1671 | else if (lock->get_parent()->is_auth()) | |
1672 | try_eval(lock, pneed_issue); | |
1673 | } | |
1674 | } | |
1675 | ||
9f95a23c | 1676 | bool Locker::rdlock_try_set(MutationImpl::LockOpVec& lov, MDRequestRef& mdr) |
7c673cae | 1677 | { |
9f95a23c | 1678 | dout(10) << __func__ << dendl; |
11fdf7f2 | 1679 | for (const auto& p : lov) { |
9f95a23c | 1680 | auto lock = p.lock; |
11fdf7f2 | 1681 | ceph_assert(p.is_rdlock()); |
9f95a23c TL |
1682 | if (!mdr->is_rdlocked(lock) && !rdlock_try(lock, mdr->get_client())) { |
1683 | lock->add_waiter(SimpleLock::WAIT_STABLE|SimpleLock::WAIT_RD, | |
1684 | new C_MDS_RetryRequest(mdcache, mdr)); | |
1685 | goto failed; | |
7c673cae | 1686 | } |
9f95a23c TL |
1687 | lock->get_rdlock(); |
1688 | mdr->emplace_lock(lock, MutationImpl::LockOp::RDLOCK); | |
1689 | dout(20) << " got rdlock on " << *lock << " " << *lock->get_parent() << dendl; | |
11fdf7f2 | 1690 | } |
9f95a23c | 1691 | |
7c673cae | 1692 | return true; |
9f95a23c TL |
1693 | failed: |
1694 | dout(10) << __func__ << " failed" << dendl; | |
1695 | drop_locks(mdr.get(), nullptr); | |
1696 | mdr->drop_local_auth_pins(); | |
1697 | return false; | |
7c673cae FG |
1698 | } |
1699 | ||
9f95a23c | 1700 | bool Locker::rdlock_try_set(MutationImpl::LockOpVec& lov, MutationRef& mut) |
7c673cae | 1701 | { |
9f95a23c | 1702 | dout(10) << __func__ << dendl; |
11fdf7f2 | 1703 | for (const auto& p : lov) { |
9f95a23c | 1704 | auto lock = p.lock; |
11fdf7f2 | 1705 | ceph_assert(p.is_rdlock()); |
9f95a23c TL |
1706 | if (!lock->can_rdlock(mut->get_client())) |
1707 | return false; | |
11fdf7f2 | 1708 | p.lock->get_rdlock(); |
9f95a23c | 1709 | mut->emplace_lock(p.lock, MutationImpl::LockOp::RDLOCK); |
7c673cae | 1710 | } |
9f95a23c | 1711 | return true; |
7c673cae FG |
1712 | } |
1713 | ||
1714 | // ------------------ | |
1715 | // wrlock | |
1716 | ||
1717 | void Locker::wrlock_force(SimpleLock *lock, MutationRef& mut) | |
1718 | { | |
1719 | if (lock->get_type() == CEPH_LOCK_IVERSION || | |
1720 | lock->get_type() == CEPH_LOCK_DVERSION) | |
f67539c2 | 1721 | return local_wrlock_grab(static_cast<LocalLockC*>(lock), mut); |
7c673cae FG |
1722 | |
1723 | dout(7) << "wrlock_force on " << *lock | |
1724 | << " on " << *lock->get_parent() << dendl; | |
1725 | lock->get_wrlock(true); | |
9f95a23c TL |
1726 | mut->emplace_lock(lock, MutationImpl::LockOp::WRLOCK); |
1727 | } | |
1728 | ||
1729 | bool Locker::wrlock_try(SimpleLock *lock, const MutationRef& mut, client_t client) | |
1730 | { | |
1731 | dout(10) << "wrlock_try " << *lock << " on " << *lock->get_parent() << dendl; | |
1732 | if (client == -1) | |
1733 | client = mut->get_client(); | |
1734 | ||
1735 | while (1) { | |
1736 | if (lock->can_wrlock(client)) { | |
1737 | lock->get_wrlock(); | |
1738 | auto it = mut->emplace_lock(lock, MutationImpl::LockOp::WRLOCK); | |
1739 | it->flags |= MutationImpl::LockOp::WRLOCK; // may already remote_wrlocked | |
1740 | return true; | |
1741 | } | |
1742 | if (!lock->is_stable()) | |
1743 | break; | |
1744 | CInode *in = static_cast<CInode *>(lock->get_parent()); | |
1745 | if (!in->is_auth()) | |
1746 | break; | |
1747 | // caller may already has a log entry open. To avoid calling | |
1748 | // scatter_writebehind or start_scatter. don't change nest lock | |
1749 | // state if it has dirty scatterdata. | |
1750 | if (lock->is_dirty()) | |
1751 | break; | |
1752 | // To avoid calling scatter_writebehind or start_scatter. don't | |
1753 | // change nest lock state to MIX. | |
1754 | ScatterLock *slock = static_cast<ScatterLock*>(lock); | |
1755 | if (slock->get_scatter_wanted() || in->has_subtree_or_exporting_dirfrag()) | |
1756 | break; | |
1757 | ||
1758 | simple_lock(lock); | |
1759 | } | |
1760 | return false; | |
7c673cae FG |
1761 | } |
1762 | ||
9f95a23c | 1763 | bool Locker::wrlock_start(const MutationImpl::LockOp &op, MDRequestRef& mut) |
7c673cae | 1764 | { |
9f95a23c | 1765 | SimpleLock *lock = op.lock; |
7c673cae FG |
1766 | if (lock->get_type() == CEPH_LOCK_IVERSION || |
1767 | lock->get_type() == CEPH_LOCK_DVERSION) | |
f67539c2 | 1768 | return local_wrlock_start(static_cast<LocalLockC*>(lock), mut); |
7c673cae FG |
1769 | |
1770 | dout(10) << "wrlock_start " << *lock << " on " << *lock->get_parent() << dendl; | |
1771 | ||
1772 | CInode *in = static_cast<CInode *>(lock->get_parent()); | |
9f95a23c TL |
1773 | client_t client = op.is_state_pin() ? lock->get_excl_client() : mut->get_client(); |
1774 | bool want_scatter = lock->get_parent()->is_auth() && | |
7c673cae FG |
1775 | (in->has_subtree_or_exporting_dirfrag() || |
1776 | static_cast<ScatterLock*>(lock)->get_scatter_wanted()); | |
1777 | ||
1778 | while (1) { | |
1779 | // wrlock? | |
1780 | if (lock->can_wrlock(client) && | |
1781 | (!want_scatter || lock->get_state() == LOCK_MIX)) { | |
1782 | lock->get_wrlock(); | |
9f95a23c | 1783 | auto it = mut->emplace_lock(lock, MutationImpl::LockOp::WRLOCK); |
11fdf7f2 | 1784 | it->flags |= MutationImpl::LockOp::WRLOCK; // may already remote_wrlocked |
7c673cae FG |
1785 | return true; |
1786 | } | |
1787 | ||
1788 | if (lock->get_type() == CEPH_LOCK_IFILE && | |
1789 | in->state_test(CInode::STATE_RECOVERING)) { | |
1790 | mds->mdcache->recovery_queue.prioritize(in); | |
1791 | } | |
1792 | ||
1793 | if (!lock->is_stable()) | |
1794 | break; | |
1795 | ||
1796 | if (in->is_auth()) { | |
7c673cae FG |
1797 | if (want_scatter) |
1798 | scatter_mix(static_cast<ScatterLock*>(lock)); | |
1799 | else | |
1800 | simple_lock(lock); | |
7c673cae FG |
1801 | } else { |
1802 | // replica. | |
1803 | // auth should be auth_pinned (see acquire_locks wrlock weird mustpin case). | |
1804 | mds_rank_t auth = lock->get_parent()->authority().first; | |
1805 | if (!mds->is_cluster_degraded() || | |
1806 | mds->mdsmap->is_clientreplay_or_active_or_stopping(auth)) { | |
1807 | dout(10) << "requesting scatter from auth on " | |
1808 | << *lock << " on " << *lock->get_parent() << dendl; | |
9f95a23c | 1809 | mds->send_message_mds(make_message<MLock>(lock, LOCK_AC_REQSCATTER, mds->get_nodeid()), auth); |
7c673cae FG |
1810 | } |
1811 | break; | |
1812 | } | |
1813 | } | |
1814 | ||
9f95a23c TL |
1815 | dout(7) << "wrlock_start waiting on " << *lock << " on " << *lock->get_parent() << dendl; |
1816 | lock->add_waiter(SimpleLock::WAIT_STABLE, new C_MDS_RetryRequest(mdcache, mut)); | |
1817 | nudge_log(lock); | |
7c673cae FG |
1818 | |
1819 | return false; | |
1820 | } | |
1821 | ||
11fdf7f2 | 1822 | void Locker::wrlock_finish(const MutationImpl::lock_iterator& it, MutationImpl *mut, bool *pneed_issue) |
7c673cae | 1823 | { |
11fdf7f2 TL |
1824 | ceph_assert(it->is_wrlock()); |
1825 | SimpleLock* lock = it->lock; | |
1826 | ||
7c673cae FG |
1827 | if (lock->get_type() == CEPH_LOCK_IVERSION || |
1828 | lock->get_type() == CEPH_LOCK_DVERSION) | |
11fdf7f2 | 1829 | return local_wrlock_finish(it, mut); |
7c673cae FG |
1830 | |
1831 | dout(7) << "wrlock_finish on " << *lock << " on " << *lock->get_parent() << dendl; | |
1832 | lock->put_wrlock(); | |
11fdf7f2 TL |
1833 | |
1834 | if (it->is_remote_wrlock()) | |
1835 | it->clear_wrlock(); | |
1836 | else | |
1837 | mut->locks.erase(it); | |
7c673cae | 1838 | |
9f95a23c TL |
1839 | if (lock->is_wrlocked()) { |
1840 | // Evaluate unstable lock after scatter_writebehind_finish(). Because | |
1841 | // eval_gather() does not change lock's state when lock is flushing. | |
1842 | if (!lock->is_stable() && lock->is_flushed() && | |
1843 | lock->get_parent()->is_auth()) | |
1844 | eval_gather(lock, false, pneed_issue); | |
1845 | } else { | |
7c673cae FG |
1846 | if (!lock->is_stable()) |
1847 | eval_gather(lock, false, pneed_issue); | |
1848 | else if (lock->get_parent()->is_auth()) | |
1849 | try_eval(lock, pneed_issue); | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | ||
1854 | // remote wrlock | |
1855 | ||
1856 | void Locker::remote_wrlock_start(SimpleLock *lock, mds_rank_t target, MDRequestRef& mut) | |
1857 | { | |
1858 | dout(7) << "remote_wrlock_start mds." << target << " on " << *lock << " on " << *lock->get_parent() << dendl; | |
1859 | ||
1860 | // wait for active target | |
1861 | if (mds->is_cluster_degraded() && | |
1862 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(target)) { | |
1863 | dout(7) << " mds." << target << " is not active" << dendl; | |
f67539c2 | 1864 | if (mut->more()->waiting_on_peer.empty()) |
7c673cae FG |
1865 | mds->wait_for_active_peer(target, new C_MDS_RetryRequest(mdcache, mut)); |
1866 | return; | |
1867 | } | |
1868 | ||
1869 | // send lock request | |
1870 | mut->start_locking(lock, target); | |
f67539c2 TL |
1871 | mut->more()->peers.insert(target); |
1872 | auto r = make_message<MMDSPeerRequest>(mut->reqid, mut->attempt, MMDSPeerRequest::OP_WRLOCK); | |
7c673cae FG |
1873 | r->set_lock_type(lock->get_type()); |
1874 | lock->get_parent()->set_object_info(r->get_object_info()); | |
1875 | mds->send_message_mds(r, target); | |
1876 | ||
f67539c2 TL |
1877 | ceph_assert(mut->more()->waiting_on_peer.count(target) == 0); |
1878 | mut->more()->waiting_on_peer.insert(target); | |
7c673cae FG |
1879 | } |
1880 | ||
11fdf7f2 | 1881 | void Locker::remote_wrlock_finish(const MutationImpl::lock_iterator& it, MutationImpl *mut) |
7c673cae | 1882 | { |
11fdf7f2 TL |
1883 | ceph_assert(it->is_remote_wrlock()); |
1884 | SimpleLock *lock = it->lock; | |
1885 | mds_rank_t target = it->wrlock_target; | |
1886 | ||
1887 | if (it->is_wrlock()) | |
1888 | it->clear_remote_wrlock(); | |
1889 | else | |
1890 | mut->locks.erase(it); | |
7c673cae FG |
1891 | |
1892 | dout(7) << "remote_wrlock_finish releasing remote wrlock on mds." << target | |
1893 | << " " << *lock->get_parent() << dendl; | |
1894 | if (!mds->is_cluster_degraded() || | |
1895 | mds->mdsmap->get_state(target) >= MDSMap::STATE_REJOIN) { | |
f67539c2 TL |
1896 | auto peerreq = make_message<MMDSPeerRequest>(mut->reqid, mut->attempt, MMDSPeerRequest::OP_UNWRLOCK); |
1897 | peerreq->set_lock_type(lock->get_type()); | |
1898 | lock->get_parent()->set_object_info(peerreq->get_object_info()); | |
1899 | mds->send_message_mds(peerreq, target); | |
7c673cae FG |
1900 | } |
1901 | } | |
1902 | ||
1903 | ||
1904 | // ------------------ | |
1905 | // xlock | |
1906 | ||
1907 | bool Locker::xlock_start(SimpleLock *lock, MDRequestRef& mut) | |
1908 | { | |
1909 | if (lock->get_type() == CEPH_LOCK_IVERSION || | |
1910 | lock->get_type() == CEPH_LOCK_DVERSION) | |
f67539c2 | 1911 | return local_xlock_start(static_cast<LocalLockC*>(lock), mut); |
7c673cae FG |
1912 | |
1913 | dout(7) << "xlock_start on " << *lock << " on " << *lock->get_parent() << dendl; | |
1914 | client_t client = mut->get_client(); | |
1915 | ||
a8e16298 TL |
1916 | CInode *in = nullptr; |
1917 | if (lock->get_cap_shift()) | |
1918 | in = static_cast<CInode *>(lock->get_parent()); | |
1919 | ||
7c673cae FG |
1920 | // auth? |
1921 | if (lock->get_parent()->is_auth()) { | |
1922 | // auth | |
1923 | while (1) { | |
e306af50 TL |
1924 | if (mut->locking && // started xlock (not preempt other request) |
1925 | lock->can_xlock(client) && | |
a8e16298 TL |
1926 | !(lock->get_state() == LOCK_LOCK_XLOCK && // client is not xlocker or |
1927 | in && in->issued_caps_need_gather(lock))) { // xlocker does not hold shared cap | |
7c673cae FG |
1928 | lock->set_state(LOCK_XLOCK); |
1929 | lock->get_xlock(mut, client); | |
9f95a23c | 1930 | mut->emplace_lock(lock, MutationImpl::LockOp::XLOCK); |
7c673cae FG |
1931 | mut->finish_locking(lock); |
1932 | return true; | |
1933 | } | |
1934 | ||
a8e16298 TL |
1935 | if (lock->get_type() == CEPH_LOCK_IFILE && |
1936 | in->state_test(CInode::STATE_RECOVERING)) { | |
1937 | mds->mdcache->recovery_queue.prioritize(in); | |
7c673cae FG |
1938 | } |
1939 | ||
1940 | if (!lock->is_stable() && (lock->get_state() != LOCK_XLOCKDONE || | |
39ae355f TL |
1941 | lock->get_xlock_by_client() != client || |
1942 | lock->is_waiter_for(SimpleLock::WAIT_STABLE))) | |
1943 | break; | |
1944 | // Avoid unstable XLOCKDONE state reset, | |
1945 | // see: https://tracker.ceph.com/issues/49132 | |
1946 | if (lock->get_state() == LOCK_XLOCKDONE && | |
1947 | lock->get_type() == CEPH_LOCK_IFILE) | |
7c673cae FG |
1948 | break; |
1949 | ||
1950 | if (lock->get_state() == LOCK_LOCK || lock->get_state() == LOCK_XLOCKDONE) { | |
1951 | mut->start_locking(lock); | |
1952 | simple_xlock(lock); | |
1953 | } else { | |
1954 | simple_lock(lock); | |
1955 | } | |
1956 | } | |
1957 | ||
1958 | lock->add_waiter(SimpleLock::WAIT_WR|SimpleLock::WAIT_STABLE, new C_MDS_RetryRequest(mdcache, mut)); | |
1959 | nudge_log(lock); | |
1960 | return false; | |
1961 | } else { | |
1962 | // replica | |
11fdf7f2 | 1963 | ceph_assert(lock->get_sm()->can_remote_xlock); |
f67539c2 | 1964 | ceph_assert(!mut->peer_request); |
7c673cae FG |
1965 | |
1966 | // wait for single auth | |
1967 | if (lock->get_parent()->is_ambiguous_auth()) { | |
1968 | lock->get_parent()->add_waiter(MDSCacheObject::WAIT_SINGLEAUTH, | |
1969 | new C_MDS_RetryRequest(mdcache, mut)); | |
1970 | return false; | |
1971 | } | |
1972 | ||
1973 | // wait for active auth | |
1974 | mds_rank_t auth = lock->get_parent()->authority().first; | |
1975 | if (mds->is_cluster_degraded() && | |
1976 | !mds->mdsmap->is_clientreplay_or_active_or_stopping(auth)) { | |
1977 | dout(7) << " mds." << auth << " is not active" << dendl; | |
f67539c2 | 1978 | if (mut->more()->waiting_on_peer.empty()) |
7c673cae FG |
1979 | mds->wait_for_active_peer(auth, new C_MDS_RetryRequest(mdcache, mut)); |
1980 | return false; | |
1981 | } | |
1982 | ||
1983 | // send lock request | |
f67539c2 | 1984 | mut->more()->peers.insert(auth); |
7c673cae | 1985 | mut->start_locking(lock, auth); |
f67539c2 | 1986 | auto r = make_message<MMDSPeerRequest>(mut->reqid, mut->attempt, MMDSPeerRequest::OP_XLOCK); |
7c673cae FG |
1987 | r->set_lock_type(lock->get_type()); |
1988 | lock->get_parent()->set_object_info(r->get_object_info()); | |
1989 | mds->send_message_mds(r, auth); | |
1990 | ||
f67539c2 TL |
1991 | ceph_assert(mut->more()->waiting_on_peer.count(auth) == 0); |
1992 | mut->more()->waiting_on_peer.insert(auth); | |
7c673cae FG |
1993 | |
1994 | return false; | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | void Locker::_finish_xlock(SimpleLock *lock, client_t xlocker, bool *pneed_issue) | |
1999 | { | |
11fdf7f2 TL |
2000 | if (lock->get_type() != CEPH_LOCK_DN && |
2001 | lock->get_type() != CEPH_LOCK_ISNAP && | |
9f95a23c | 2002 | lock->get_type() != CEPH_LOCK_IPOLICY && |
11fdf7f2 | 2003 | lock->get_num_rdlocks() == 0 && |
7c673cae | 2004 | lock->get_num_wrlocks() == 0 && |
b32b8144 | 2005 | !lock->is_leased() && |
11fdf7f2 | 2006 | lock->get_state() != LOCK_XLOCKSNAP) { |
7c673cae FG |
2007 | CInode *in = static_cast<CInode*>(lock->get_parent()); |
2008 | client_t loner = in->get_target_loner(); | |
2009 | if (loner >= 0 && (xlocker < 0 || xlocker == loner)) { | |
2010 | lock->set_state(LOCK_EXCL); | |
2011 | lock->get_parent()->auth_unpin(lock); | |
2012 | lock->finish_waiters(SimpleLock::WAIT_STABLE|SimpleLock::WAIT_WR|SimpleLock::WAIT_RD); | |
2013 | if (lock->get_cap_shift()) | |
2014 | *pneed_issue = true; | |
2015 | if (lock->get_parent()->is_auth() && | |
2016 | lock->is_stable()) | |
2017 | try_eval(lock, pneed_issue); | |
2018 | return; | |
2019 | } | |
2020 | } | |
2021 | // the xlocker may have CEPH_CAP_GSHARED, need to revoke it if next state is LOCK_LOCK | |
2022 | eval_gather(lock, lock->get_state() != LOCK_XLOCKSNAP, pneed_issue); | |
2023 | } | |
2024 | ||
11fdf7f2 | 2025 | void Locker::xlock_finish(const MutationImpl::lock_iterator& it, MutationImpl *mut, bool *pneed_issue) |
7c673cae | 2026 | { |
11fdf7f2 TL |
2027 | ceph_assert(it->is_xlock()); |
2028 | SimpleLock *lock = it->lock; | |
2029 | ||
7c673cae FG |
2030 | if (lock->get_type() == CEPH_LOCK_IVERSION || |
2031 | lock->get_type() == CEPH_LOCK_DVERSION) | |
11fdf7f2 | 2032 | return local_xlock_finish(it, mut); |
7c673cae FG |
2033 | |
2034 | dout(10) << "xlock_finish on " << *lock << " " << *lock->get_parent() << dendl; | |
2035 | ||
2036 | client_t xlocker = lock->get_xlock_by_client(); | |
2037 | ||
2038 | // drop ref | |
2039 | lock->put_xlock(); | |
11fdf7f2 TL |
2040 | ceph_assert(mut); |
2041 | mut->locks.erase(it); | |
7c673cae FG |
2042 | |
2043 | bool do_issue = false; | |
2044 | ||
2045 | // remote xlock? | |
2046 | if (!lock->get_parent()->is_auth()) { | |
11fdf7f2 | 2047 | ceph_assert(lock->get_sm()->can_remote_xlock); |
7c673cae FG |
2048 | |
2049 | // tell auth | |
2050 | dout(7) << "xlock_finish releasing remote xlock on " << *lock->get_parent() << dendl; | |
2051 | mds_rank_t auth = lock->get_parent()->authority().first; | |
2052 | if (!mds->is_cluster_degraded() || | |
2053 | mds->mdsmap->get_state(auth) >= MDSMap::STATE_REJOIN) { | |
f67539c2 TL |
2054 | auto peerreq = make_message<MMDSPeerRequest>(mut->reqid, mut->attempt, MMDSPeerRequest::OP_UNXLOCK); |
2055 | peerreq->set_lock_type(lock->get_type()); | |
2056 | lock->get_parent()->set_object_info(peerreq->get_object_info()); | |
2057 | mds->send_message_mds(peerreq, auth); | |
7c673cae FG |
2058 | } |
2059 | // others waiting? | |
2060 | lock->finish_waiters(SimpleLock::WAIT_STABLE | | |
2061 | SimpleLock::WAIT_WR | | |
2062 | SimpleLock::WAIT_RD, 0); | |
2063 | } else { | |
a8e16298 TL |
2064 | if (lock->get_num_xlocks() == 0 && |
2065 | lock->get_state() != LOCK_LOCK_XLOCK) { // no one is taking xlock | |
7c673cae FG |
2066 | _finish_xlock(lock, xlocker, &do_issue); |
2067 | } | |
2068 | } | |
2069 | ||
2070 | if (do_issue) { | |
2071 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
2072 | if (in->is_head()) { | |
2073 | if (pneed_issue) | |
2074 | *pneed_issue = true; | |
2075 | else | |
2076 | issue_caps(in); | |
2077 | } | |
2078 | } | |
2079 | } | |
2080 | ||
11fdf7f2 | 2081 | void Locker::xlock_export(const MutationImpl::lock_iterator& it, MutationImpl *mut) |
7c673cae | 2082 | { |
11fdf7f2 TL |
2083 | ceph_assert(it->is_xlock()); |
2084 | SimpleLock *lock = it->lock; | |
7c673cae FG |
2085 | dout(10) << "xlock_export on " << *lock << " " << *lock->get_parent() << dendl; |
2086 | ||
2087 | lock->put_xlock(); | |
11fdf7f2 | 2088 | mut->locks.erase(it); |
7c673cae FG |
2089 | |
2090 | MDSCacheObject *p = lock->get_parent(); | |
11fdf7f2 | 2091 | ceph_assert(p->state_test(CInode::STATE_AMBIGUOUSAUTH)); // we are exporting this (inode) |
7c673cae FG |
2092 | |
2093 | if (!lock->is_stable()) | |
2094 | lock->get_parent()->auth_unpin(lock); | |
2095 | ||
2096 | lock->set_state(LOCK_LOCK); | |
2097 | } | |
2098 | ||
2099 | void Locker::xlock_import(SimpleLock *lock) | |
2100 | { | |
2101 | dout(10) << "xlock_import on " << *lock << " " << *lock->get_parent() << dendl; | |
2102 | lock->get_parent()->auth_pin(lock); | |
2103 | } | |
2104 | ||
9f95a23c TL |
2105 | void Locker::xlock_downgrade(SimpleLock *lock, MutationImpl *mut) |
2106 | { | |
2107 | dout(10) << "xlock_downgrade on " << *lock << " " << *lock->get_parent() << dendl; | |
2108 | auto it = mut->locks.find(lock); | |
2109 | if (it->is_rdlock()) | |
2110 | return; // already downgraded | |
2111 | ||
2112 | ceph_assert(lock->get_parent()->is_auth()); | |
2113 | ceph_assert(it != mut->locks.end()); | |
2114 | ceph_assert(it->is_xlock()); | |
2115 | ||
2116 | lock->set_xlock_done(); | |
2117 | lock->get_rdlock(); | |
2118 | xlock_finish(it, mut, nullptr); | |
2119 | mut->emplace_lock(lock, MutationImpl::LockOp::RDLOCK); | |
2120 | } | |
7c673cae FG |
2121 | |
2122 | ||
2123 | // file i/o ----------------------------------------- | |
2124 | ||
2125 | version_t Locker::issue_file_data_version(CInode *in) | |
2126 | { | |
2127 | dout(7) << "issue_file_data_version on " << *in << dendl; | |
f67539c2 | 2128 | return in->get_inode()->file_data_version; |
7c673cae FG |
2129 | } |
2130 | ||
2131 | class C_Locker_FileUpdate_finish : public LockerLogContext { | |
2132 | CInode *in; | |
2133 | MutationRef mut; | |
11fdf7f2 | 2134 | unsigned flags; |
7c673cae | 2135 | client_t client; |
9f95a23c | 2136 | ref_t<MClientCaps> ack; |
7c673cae | 2137 | public: |
11fdf7f2 | 2138 | C_Locker_FileUpdate_finish(Locker *l, CInode *i, MutationRef& m, unsigned f, |
9f95a23c | 2139 | const ref_t<MClientCaps> &ack, client_t c=-1) |
11fdf7f2 | 2140 | : LockerLogContext(l), in(i), mut(m), flags(f), client(c), ack(ack) { |
7c673cae FG |
2141 | in->get(CInode::PIN_PTRWAITER); |
2142 | } | |
2143 | void finish(int r) override { | |
11fdf7f2 | 2144 | locker->file_update_finish(in, mut, flags, client, ack); |
7c673cae FG |
2145 | in->put(CInode::PIN_PTRWAITER); |
2146 | } | |
2147 | }; | |
2148 | ||
11fdf7f2 TL |
2149 | enum { |
2150 | UPDATE_SHAREMAX = 1, | |
2151 | UPDATE_NEEDSISSUE = 2, | |
2152 | UPDATE_SNAPFLUSH = 4, | |
2153 | }; | |
2154 | ||
2155 | void Locker::file_update_finish(CInode *in, MutationRef& mut, unsigned flags, | |
9f95a23c | 2156 | client_t client, const ref_t<MClientCaps> &ack) |
7c673cae FG |
2157 | { |
2158 | dout(10) << "file_update_finish on " << *in << dendl; | |
7c673cae FG |
2159 | |
2160 | mut->apply(); | |
11fdf7f2 | 2161 | |
7c673cae FG |
2162 | if (ack) { |
2163 | Session *session = mds->get_session(client); | |
92f5a8d4 | 2164 | if (session && !session->is_closed()) { |
7c673cae FG |
2165 | // "oldest flush tid" > 0 means client uses unique TID for each flush |
2166 | if (ack->get_oldest_flush_tid() > 0) | |
11fdf7f2 | 2167 | session->add_completed_flush(ack->get_client_tid()); |
7c673cae FG |
2168 | mds->send_message_client_counted(ack, session); |
2169 | } else { | |
2170 | dout(10) << " no session for client." << client << " " << *ack << dendl; | |
7c673cae FG |
2171 | } |
2172 | } | |
2173 | ||
2174 | set<CInode*> need_issue; | |
2175 | drop_locks(mut.get(), &need_issue); | |
2176 | ||
11fdf7f2 TL |
2177 | if (in->is_head()) { |
2178 | if ((flags & UPDATE_NEEDSISSUE) && need_issue.count(in) == 0) { | |
2179 | Capability *cap = in->get_client_cap(client); | |
2180 | if (cap && (cap->wanted() & ~cap->pending())) | |
2181 | issue_caps(in, cap); | |
2182 | } | |
2183 | ||
2184 | if ((flags & UPDATE_SHAREMAX) && in->is_auth() && | |
2185 | (in->filelock.gcaps_allowed(CAP_LONER) & (CEPH_CAP_GWR|CEPH_CAP_GBUFFER))) | |
2186 | share_inode_max_size(in); | |
2187 | ||
2188 | } else if ((flags & UPDATE_SNAPFLUSH) && !in->client_snap_caps.empty()) { | |
7c673cae FG |
2189 | dout(10) << " client_snap_caps " << in->client_snap_caps << dendl; |
2190 | // check for snap writeback completion | |
eafe8130 TL |
2191 | in->client_snap_caps.erase(client); |
2192 | if (in->client_snap_caps.empty()) { | |
2193 | for (int i = 0; i < num_cinode_locks; i++) { | |
2194 | SimpleLock *lock = in->get_lock(cinode_lock_info[i].lock); | |
11fdf7f2 | 2195 | ceph_assert(lock); |
11fdf7f2 | 2196 | lock->put_wrlock(); |
11fdf7f2 | 2197 | } |
eafe8130 TL |
2198 | in->item_open_file.remove_myself(); |
2199 | in->item_caps.remove_myself(); | |
7c673cae FG |
2200 | eval_cap_gather(in, &need_issue); |
2201 | } | |
7c673cae FG |
2202 | } |
2203 | issue_caps_set(need_issue); | |
2204 | ||
11fdf7f2 | 2205 | mds->balancer->hit_inode(in, META_POP_IWR); |
28e407b8 | 2206 | |
7c673cae FG |
2207 | // auth unpin after issuing caps |
2208 | mut->cleanup(); | |
2209 | } | |
2210 | ||
2211 | Capability* Locker::issue_new_caps(CInode *in, | |
2212 | int mode, | |
9f95a23c TL |
2213 | MDRequestRef& mdr, |
2214 | SnapRealm *realm) | |
7c673cae FG |
2215 | { |
2216 | dout(7) << "issue_new_caps for mode " << mode << " on " << *in << dendl; | |
9f95a23c TL |
2217 | Session *session = mdr->session; |
2218 | bool new_inode = (mdr->alloc_ino || mdr->used_prealloc_ino); | |
7c673cae | 2219 | |
9f95a23c TL |
2220 | // if replay or async, try to reconnect cap, and otherwise do nothing. |
2221 | if (new_inode && mdr->client_request->is_queued_for_replay()) | |
a8e16298 TL |
2222 | return mds->mdcache->try_reconnect_cap(in, session); |
2223 | ||
7c673cae | 2224 | // my needs |
11fdf7f2 TL |
2225 | ceph_assert(session->info.inst.name.is_client()); |
2226 | client_t my_client = session->get_client(); | |
7c673cae FG |
2227 | int my_want = ceph_caps_for_mode(mode); |
2228 | ||
2229 | // register a capability | |
2230 | Capability *cap = in->get_client_cap(my_client); | |
2231 | if (!cap) { | |
2232 | // new cap | |
9f95a23c | 2233 | cap = in->add_client_cap(my_client, session, realm, new_inode); |
7c673cae FG |
2234 | cap->set_wanted(my_want); |
2235 | cap->mark_new(); | |
7c673cae | 2236 | } else { |
7c673cae FG |
2237 | // make sure it wants sufficient caps |
2238 | if (my_want & ~cap->wanted()) { | |
2239 | // augment wanted caps for this client | |
2240 | cap->set_wanted(cap->wanted() | my_want); | |
2241 | } | |
2242 | } | |
9f95a23c | 2243 | cap->inc_suppress(); // suppress file cap messages (we'll bundle with the request reply) |
7c673cae FG |
2244 | |
2245 | if (in->is_auth()) { | |
2246 | // [auth] twiddle mode? | |
2247 | eval(in, CEPH_CAP_LOCKS); | |
2248 | ||
2a845540 TL |
2249 | int all_allowed = -1, loner_allowed = -1, xlocker_allowed = -1; |
2250 | int allowed = get_allowed_caps(in, cap, all_allowed, loner_allowed, | |
2251 | xlocker_allowed); | |
2252 | ||
2253 | if (_need_flush_mdlog(in, my_want & ~allowed, true)) | |
7c673cae FG |
2254 | mds->mdlog->flush(); |
2255 | ||
2256 | } else { | |
2257 | // [replica] tell auth about any new caps wanted | |
2258 | request_inode_file_caps(in); | |
2259 | } | |
2260 | ||
2261 | // issue caps (pot. incl new one) | |
2262 | //issue_caps(in); // note: _eval above may have done this already... | |
2263 | ||
2264 | // re-issue whatever we can | |
2265 | //cap->issue(cap->pending()); | |
2266 | ||
9f95a23c | 2267 | cap->dec_suppress(); |
7c673cae FG |
2268 | |
2269 | return cap; | |
2270 | } | |
2271 | ||
7c673cae FG |
2272 | void Locker::issue_caps_set(set<CInode*>& inset) |
2273 | { | |
2274 | for (set<CInode*>::iterator p = inset.begin(); p != inset.end(); ++p) | |
2275 | issue_caps(*p); | |
2276 | } | |
2277 | ||
494da23a TL |
2278 | class C_Locker_RevokeStaleCap : public LockerContext { |
2279 | CInode *in; | |
2280 | client_t client; | |
2281 | public: | |
2282 | C_Locker_RevokeStaleCap(Locker *l, CInode *i, client_t c) : | |
2283 | LockerContext(l), in(i), client(c) { | |
2284 | in->get(CInode::PIN_PTRWAITER); | |
2285 | } | |
2286 | void finish(int r) override { | |
2287 | locker->revoke_stale_cap(in, client); | |
2288 | in->put(CInode::PIN_PTRWAITER); | |
2289 | } | |
2290 | }; | |
2291 | ||
2a845540 TL |
2292 | int Locker::get_allowed_caps(CInode *in, Capability *cap, |
2293 | int &all_allowed, int &loner_allowed, | |
2294 | int &xlocker_allowed) | |
7c673cae | 2295 | { |
2a845540 TL |
2296 | client_t client = cap->get_client(); |
2297 | ||
7c673cae | 2298 | // allowed caps are determined by the lock mode. |
2a845540 TL |
2299 | if (all_allowed == -1) |
2300 | all_allowed = in->get_caps_allowed_by_type(CAP_ANY); | |
2301 | if (loner_allowed == -1) | |
2302 | loner_allowed = in->get_caps_allowed_by_type(CAP_LONER); | |
2303 | if (xlocker_allowed == -1) | |
2304 | xlocker_allowed = in->get_caps_allowed_by_type(CAP_XLOCKER); | |
7c673cae FG |
2305 | |
2306 | client_t loner = in->get_loner(); | |
2307 | if (loner >= 0) { | |
2a845540 | 2308 | dout(7) << "get_allowed_caps loner client." << loner |
7c673cae FG |
2309 | << " allowed=" << ccap_string(loner_allowed) |
2310 | << ", xlocker allowed=" << ccap_string(xlocker_allowed) | |
2311 | << ", others allowed=" << ccap_string(all_allowed) | |
2312 | << " on " << *in << dendl; | |
2313 | } else { | |
2a845540 | 2314 | dout(7) << "get_allowed_caps allowed=" << ccap_string(all_allowed) |
7c673cae FG |
2315 | << ", xlocker allowed=" << ccap_string(xlocker_allowed) |
2316 | << " on " << *in << dendl; | |
2317 | } | |
2318 | ||
2a845540 TL |
2319 | // do not issue _new_ bits when size|mtime is projected |
2320 | int allowed; | |
2321 | if (loner == client) | |
2322 | allowed = loner_allowed; | |
2323 | else | |
2324 | allowed = all_allowed; | |
7c673cae | 2325 | |
2a845540 TL |
2326 | // add in any xlocker-only caps (for locks this client is the xlocker for) |
2327 | allowed |= xlocker_allowed & in->get_xlocker_mask(client); | |
2328 | if (in->is_dir()) { | |
2329 | allowed &= ~CEPH_CAP_ANY_DIR_OPS; | |
2330 | if (allowed & CEPH_CAP_FILE_EXCL) | |
2331 | allowed |= cap->get_lock_cache_allowed(); | |
2332 | } | |
2333 | ||
2334 | if ((in->get_inode()->inline_data.version != CEPH_INLINE_NONE && | |
2335 | cap->is_noinline()) || | |
2336 | (!in->get_inode()->layout.pool_ns.empty() && | |
2337 | cap->is_nopoolns())) | |
2338 | allowed &= ~(CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR); | |
2339 | ||
2340 | return allowed; | |
2341 | } | |
2342 | ||
2343 | int Locker::issue_caps(CInode *in, Capability *only_cap) | |
2344 | { | |
7c673cae | 2345 | // count conflicts with |
2a845540 TL |
2346 | int nissued = 0; |
2347 | int all_allowed = -1, loner_allowed = -1, xlocker_allowed = -1; | |
2348 | ||
2349 | ceph_assert(in->is_head()); | |
7c673cae FG |
2350 | |
2351 | // client caps | |
11fdf7f2 | 2352 | map<client_t, Capability>::iterator it; |
7c673cae FG |
2353 | if (only_cap) |
2354 | it = in->client_caps.find(only_cap->get_client()); | |
2355 | else | |
2356 | it = in->client_caps.begin(); | |
2357 | for (; it != in->client_caps.end(); ++it) { | |
11fdf7f2 | 2358 | Capability *cap = &it->second; |
2a845540 TL |
2359 | int allowed = get_allowed_caps(in, cap, all_allowed, loner_allowed, |
2360 | xlocker_allowed); | |
7c673cae FG |
2361 | int pending = cap->pending(); |
2362 | int wanted = cap->wanted(); | |
2363 | ||
2364 | dout(20) << " client." << it->first | |
2365 | << " pending " << ccap_string(pending) | |
2366 | << " allowed " << ccap_string(allowed) | |
2367 | << " wanted " << ccap_string(wanted) | |
2368 | << dendl; | |
2369 | ||
2370 | if (!(pending & ~allowed)) { | |
2371 | // skip if suppress or new, and not revocation | |
494da23a TL |
2372 | if (cap->is_new() || cap->is_suppress() || cap->is_stale()) { |
2373 | dout(20) << " !revoke and new|suppressed|stale, skipping client." << it->first << dendl; | |
2374 | continue; | |
2375 | } | |
2376 | } else { | |
2377 | ceph_assert(!cap->is_new()); | |
2378 | if (cap->is_stale()) { | |
2379 | dout(20) << " revoke stale cap from client." << it->first << dendl; | |
2380 | ceph_assert(!cap->is_valid()); | |
2381 | cap->issue(allowed & pending, false); | |
2382 | mds->queue_waiter_front(new C_Locker_RevokeStaleCap(this, in, it->first)); | |
7c673cae FG |
2383 | continue; |
2384 | } | |
92f5a8d4 TL |
2385 | |
2386 | if (!cap->is_valid() && (pending & ~CEPH_CAP_PIN)) { | |
2387 | // After stale->resume circle, client thinks it only has CEPH_CAP_PIN. | |
2388 | // mds needs to re-issue caps, then do revocation. | |
2389 | long seq = cap->issue(pending, true); | |
2390 | ||
2391 | dout(7) << " sending MClientCaps to client." << it->first | |
2392 | << " seq " << seq << " re-issue " << ccap_string(pending) << dendl; | |
2393 | ||
f67539c2 TL |
2394 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_grant); |
2395 | ||
9f95a23c TL |
2396 | auto m = make_message<MClientCaps>(CEPH_CAP_OP_GRANT, in->ino(), |
2397 | in->find_snaprealm()->inode->ino(), | |
2398 | cap->get_cap_id(), cap->get_last_seq(), | |
2399 | pending, wanted, 0, cap->get_mseq(), | |
2400 | mds->get_osd_epoch_barrier()); | |
92f5a8d4 TL |
2401 | in->encode_cap_message(m, cap); |
2402 | ||
2403 | mds->send_message_client_counted(m, cap->get_session()); | |
2404 | } | |
7c673cae FG |
2405 | } |
2406 | ||
2407 | // notify clients about deleted inode, to make sure they release caps ASAP. | |
f67539c2 | 2408 | if (in->get_inode()->nlink == 0) |
7c673cae FG |
2409 | wanted |= CEPH_CAP_LINK_SHARED; |
2410 | ||
2411 | // are there caps that the client _wants_ and can have, but aren't pending? | |
2412 | // or do we need to revoke? | |
494da23a TL |
2413 | if ((pending & ~allowed) || // need to revoke ~allowed caps. |
2414 | ((wanted & allowed) & ~pending) || // missing wanted+allowed caps | |
2415 | !cap->is_valid()) { // after stale->resume circle | |
7c673cae FG |
2416 | // issue |
2417 | nissued++; | |
2418 | ||
2419 | // include caps that clients generally like, while we're at it. | |
2420 | int likes = in->get_caps_liked(); | |
2421 | int before = pending; | |
2422 | long seq; | |
2423 | if (pending & ~allowed) | |
494da23a | 2424 | seq = cap->issue((wanted|likes) & allowed & pending, true); // if revoking, don't issue anything new. |
7c673cae | 2425 | else |
494da23a | 2426 | seq = cap->issue((wanted|likes) & allowed, true); |
7c673cae FG |
2427 | int after = cap->pending(); |
2428 | ||
494da23a TL |
2429 | dout(7) << " sending MClientCaps to client." << it->first |
2430 | << " seq " << seq << " new pending " << ccap_string(after) | |
2431 | << " was " << ccap_string(before) << dendl; | |
7c673cae | 2432 | |
494da23a TL |
2433 | int op = (before & ~after) ? CEPH_CAP_OP_REVOKE : CEPH_CAP_OP_GRANT; |
2434 | if (op == CEPH_CAP_OP_REVOKE) { | |
f67539c2 | 2435 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_revoke); |
494da23a TL |
2436 | revoking_caps.push_back(&cap->item_revoking_caps); |
2437 | revoking_caps_by_client[cap->get_client()].push_back(&cap->item_client_revoking_caps); | |
2438 | cap->set_last_revoke_stamp(ceph_clock_now()); | |
2439 | cap->reset_num_revoke_warnings(); | |
f67539c2 TL |
2440 | } else { |
2441 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_grant); | |
7c673cae | 2442 | } |
494da23a | 2443 | |
9f95a23c TL |
2444 | auto m = make_message<MClientCaps>(op, in->ino(), |
2445 | in->find_snaprealm()->inode->ino(), | |
2446 | cap->get_cap_id(), cap->get_last_seq(), | |
2447 | after, wanted, 0, cap->get_mseq(), | |
2448 | mds->get_osd_epoch_barrier()); | |
494da23a TL |
2449 | in->encode_cap_message(m, cap); |
2450 | ||
2451 | mds->send_message_client_counted(m, cap->get_session()); | |
7c673cae FG |
2452 | } |
2453 | ||
2454 | if (only_cap) | |
2455 | break; | |
2456 | } | |
2457 | ||
81eedcae | 2458 | return nissued; |
7c673cae FG |
2459 | } |
2460 | ||
2461 | void Locker::issue_truncate(CInode *in) | |
2462 | { | |
2463 | dout(7) << "issue_truncate on " << *in << dendl; | |
2464 | ||
11fdf7f2 | 2465 | for (auto &p : in->client_caps) { |
f67539c2 | 2466 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_trunc); |
11fdf7f2 | 2467 | Capability *cap = &p.second; |
9f95a23c | 2468 | auto m = make_message<MClientCaps>(CEPH_CAP_OP_TRUNC, |
11fdf7f2 TL |
2469 | in->ino(), |
2470 | in->find_snaprealm()->inode->ino(), | |
2471 | cap->get_cap_id(), cap->get_last_seq(), | |
2472 | cap->pending(), cap->wanted(), 0, | |
2473 | cap->get_mseq(), | |
2474 | mds->get_osd_epoch_barrier()); | |
7c673cae | 2475 | in->encode_cap_message(m, cap); |
11fdf7f2 | 2476 | mds->send_message_client_counted(m, p.first); |
7c673cae FG |
2477 | } |
2478 | ||
2479 | // should we increase max_size? | |
2480 | if (in->is_auth() && in->is_file()) | |
2481 | check_inode_max_size(in); | |
2482 | } | |
2483 | ||
494da23a TL |
2484 | |
2485 | void Locker::revoke_stale_cap(CInode *in, client_t client) | |
2486 | { | |
2487 | dout(7) << __func__ << " client." << client << " on " << *in << dendl; | |
2488 | Capability *cap = in->get_client_cap(client); | |
2489 | if (!cap) | |
2490 | return; | |
2491 | ||
2492 | if (cap->revoking() & CEPH_CAP_ANY_WR) { | |
f67539c2 TL |
2493 | CachedStackStringStream css; |
2494 | mds->evict_client(client.v, false, g_conf()->mds_session_blocklist_on_timeout, *css, nullptr); | |
494da23a TL |
2495 | return; |
2496 | } | |
2497 | ||
2498 | cap->revoke(); | |
2499 | ||
f67539c2 | 2500 | if (in->is_auth() && in->get_inode()->client_ranges.count(cap->get_client())) |
494da23a TL |
2501 | in->state_set(CInode::STATE_NEEDSRECOVER); |
2502 | ||
2503 | if (in->state_test(CInode::STATE_EXPORTINGCAPS)) | |
2504 | return; | |
2505 | ||
2506 | if (!in->filelock.is_stable()) | |
2507 | eval_gather(&in->filelock); | |
2508 | if (!in->linklock.is_stable()) | |
2509 | eval_gather(&in->linklock); | |
2510 | if (!in->authlock.is_stable()) | |
2511 | eval_gather(&in->authlock); | |
2512 | if (!in->xattrlock.is_stable()) | |
2513 | eval_gather(&in->xattrlock); | |
2514 | ||
2515 | if (in->is_auth()) | |
2516 | try_eval(in, CEPH_CAP_LOCKS); | |
2517 | else | |
2518 | request_inode_file_caps(in); | |
2519 | } | |
2520 | ||
2521 | bool Locker::revoke_stale_caps(Session *session) | |
7c673cae | 2522 | { |
a8e16298 | 2523 | dout(10) << "revoke_stale_caps for " << session->info.inst.name << dendl; |
7c673cae | 2524 | |
494da23a TL |
2525 | // invalidate all caps |
2526 | session->inc_cap_gen(); | |
2527 | ||
92f5a8d4 | 2528 | bool ret = true; |
a8e16298 TL |
2529 | std::vector<CInode*> to_eval; |
2530 | ||
2531 | for (auto p = session->caps.begin(); !p.end(); ) { | |
2532 | Capability *cap = *p; | |
2533 | ++p; | |
2534 | if (!cap->is_notable()) { | |
2535 | // the rest ones are not being revoked and don't have writeable range | |
2536 | // and don't want exclusive caps or want file read/write. They don't | |
2537 | // need recover, they don't affect eval_gather()/try_eval() | |
2538 | break; | |
2539 | } | |
2540 | ||
494da23a TL |
2541 | int revoking = cap->revoking(); |
2542 | if (!revoking) | |
a8e16298 TL |
2543 | continue; |
2544 | ||
92f5a8d4 TL |
2545 | if (revoking & CEPH_CAP_ANY_WR) { |
2546 | ret = false; | |
2547 | break; | |
2548 | } | |
494da23a TL |
2549 | |
2550 | int issued = cap->issued(); | |
a8e16298 | 2551 | CInode *in = cap->get_inode(); |
7c673cae | 2552 | dout(10) << " revoking " << ccap_string(issued) << " on " << *in << dendl; |
9f95a23c TL |
2553 | int revoked = cap->revoke(); |
2554 | if (revoked & CEPH_CAP_ANY_DIR_OPS) | |
2555 | eval_lock_caches(cap); | |
7c673cae FG |
2556 | |
2557 | if (in->is_auth() && | |
f67539c2 | 2558 | in->get_inode()->client_ranges.count(cap->get_client())) |
7c673cae FG |
2559 | in->state_set(CInode::STATE_NEEDSRECOVER); |
2560 | ||
a8e16298 TL |
2561 | // eval lock/inode may finish contexts, which may modify other cap's position |
2562 | // in the session->caps. | |
2563 | to_eval.push_back(in); | |
7c673cae | 2564 | } |
7c673cae | 2565 | |
a8e16298 TL |
2566 | for (auto in : to_eval) { |
2567 | if (in->state_test(CInode::STATE_EXPORTINGCAPS)) | |
2568 | continue; | |
2569 | ||
2570 | if (!in->filelock.is_stable()) | |
2571 | eval_gather(&in->filelock); | |
2572 | if (!in->linklock.is_stable()) | |
2573 | eval_gather(&in->linklock); | |
2574 | if (!in->authlock.is_stable()) | |
2575 | eval_gather(&in->authlock); | |
2576 | if (!in->xattrlock.is_stable()) | |
2577 | eval_gather(&in->xattrlock); | |
2578 | ||
2579 | if (in->is_auth()) | |
2580 | try_eval(in, CEPH_CAP_LOCKS); | |
2581 | else | |
2582 | request_inode_file_caps(in); | |
7c673cae | 2583 | } |
494da23a | 2584 | |
92f5a8d4 | 2585 | return ret; |
7c673cae FG |
2586 | } |
2587 | ||
2588 | void Locker::resume_stale_caps(Session *session) | |
2589 | { | |
2590 | dout(10) << "resume_stale_caps for " << session->info.inst.name << dendl; | |
2591 | ||
11fdf7f2 | 2592 | bool lazy = session->info.has_feature(CEPHFS_FEATURE_LAZY_CAP_WANTED); |
a8e16298 | 2593 | for (xlist<Capability*>::iterator p = session->caps.begin(); !p.end(); ) { |
7c673cae | 2594 | Capability *cap = *p; |
a8e16298 | 2595 | ++p; |
11fdf7f2 | 2596 | if (lazy && !cap->is_notable()) |
a8e16298 TL |
2597 | break; // see revoke_stale_caps() |
2598 | ||
7c673cae | 2599 | CInode *in = cap->get_inode(); |
a8e16298 TL |
2600 | ceph_assert(in->is_head()); |
2601 | dout(10) << " clearing stale flag on " << *in << dendl; | |
7c673cae | 2602 | |
a8e16298 TL |
2603 | if (in->state_test(CInode::STATE_EXPORTINGCAPS)) { |
2604 | // if export succeeds, the cap will be removed. if export fails, | |
2605 | // we need to re-issue the cap if it's not stale. | |
2606 | in->state_set(CInode::STATE_EVALSTALECAPS); | |
2607 | continue; | |
7c673cae | 2608 | } |
a8e16298 TL |
2609 | |
2610 | if (!in->is_auth() || !eval(in, CEPH_CAP_LOCKS)) | |
2611 | issue_caps(in, cap); | |
7c673cae FG |
2612 | } |
2613 | } | |
2614 | ||
2615 | void Locker::remove_stale_leases(Session *session) | |
2616 | { | |
2617 | dout(10) << "remove_stale_leases for " << session->info.inst.name << dendl; | |
2618 | xlist<ClientLease*>::iterator p = session->leases.begin(); | |
2619 | while (!p.end()) { | |
2620 | ClientLease *l = *p; | |
2621 | ++p; | |
2622 | CDentry *parent = static_cast<CDentry*>(l->parent); | |
2623 | dout(15) << " removing lease on " << *parent << dendl; | |
2624 | parent->remove_client_lease(l, this); | |
2625 | } | |
2626 | } | |
2627 | ||
2628 | ||
2629 | class C_MDL_RequestInodeFileCaps : public LockerContext { | |
2630 | CInode *in; | |
2631 | public: | |
2632 | C_MDL_RequestInodeFileCaps(Locker *l, CInode *i) : LockerContext(l), in(i) { | |
2633 | in->get(CInode::PIN_PTRWAITER); | |
2634 | } | |
2635 | void finish(int r) override { | |
2636 | if (!in->is_auth()) | |
2637 | locker->request_inode_file_caps(in); | |
2638 | in->put(CInode::PIN_PTRWAITER); | |
2639 | } | |
2640 | }; | |
2641 | ||
2642 | void Locker::request_inode_file_caps(CInode *in) | |
2643 | { | |
11fdf7f2 | 2644 | ceph_assert(!in->is_auth()); |
7c673cae | 2645 | |
f64942e4 | 2646 | int wanted = in->get_caps_wanted() & in->get_caps_allowed_ever() & ~CEPH_CAP_PIN; |
7c673cae FG |
2647 | if (wanted != in->replica_caps_wanted) { |
2648 | // wait for single auth | |
2649 | if (in->is_ambiguous_auth()) { | |
2650 | in->add_waiter(MDSCacheObject::WAIT_SINGLEAUTH, | |
2651 | new C_MDL_RequestInodeFileCaps(this, in)); | |
2652 | return; | |
2653 | } | |
2654 | ||
2655 | mds_rank_t auth = in->authority().first; | |
2656 | if (mds->is_cluster_degraded() && | |
2657 | mds->mdsmap->get_state(auth) == MDSMap::STATE_REJOIN) { | |
2658 | mds->wait_for_active_peer(auth, new C_MDL_RequestInodeFileCaps(this, in)); | |
2659 | return; | |
2660 | } | |
2661 | ||
2662 | dout(7) << "request_inode_file_caps " << ccap_string(wanted) | |
2663 | << " was " << ccap_string(in->replica_caps_wanted) | |
2664 | << " on " << *in << " to mds." << auth << dendl; | |
2665 | ||
2666 | in->replica_caps_wanted = wanted; | |
2667 | ||
2668 | if (!mds->is_cluster_degraded() || | |
2669 | mds->mdsmap->is_clientreplay_or_active_or_stopping(auth)) | |
9f95a23c | 2670 | mds->send_message_mds(make_message<MInodeFileCaps>(in->ino(), in->replica_caps_wanted), auth); |
7c673cae FG |
2671 | } |
2672 | } | |
2673 | ||
9f95a23c | 2674 | void Locker::handle_inode_file_caps(const cref_t<MInodeFileCaps> &m) |
7c673cae FG |
2675 | { |
2676 | // nobody should be talking to us during recovery. | |
a8e16298 TL |
2677 | if (mds->get_state() < MDSMap::STATE_CLIENTREPLAY) { |
2678 | if (mds->get_want_state() >= MDSMap::STATE_CLIENTREPLAY) { | |
2679 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
2680 | return; | |
2681 | } | |
11fdf7f2 | 2682 | ceph_abort_msg("got unexpected message during recovery"); |
a8e16298 | 2683 | } |
7c673cae FG |
2684 | |
2685 | // ok | |
2686 | CInode *in = mdcache->get_inode(m->get_ino()); | |
2687 | mds_rank_t from = mds_rank_t(m->get_source().num()); | |
2688 | ||
11fdf7f2 TL |
2689 | ceph_assert(in); |
2690 | ceph_assert(in->is_auth()); | |
7c673cae FG |
2691 | |
2692 | dout(7) << "handle_inode_file_caps replica mds." << from << " wants caps " << ccap_string(m->get_caps()) << " on " << *in << dendl; | |
2693 | ||
f67539c2 TL |
2694 | if (mds->logger) mds->logger->inc(l_mdss_handle_inode_file_caps); |
2695 | ||
11fdf7f2 | 2696 | in->set_mds_caps_wanted(from, m->get_caps()); |
7c673cae FG |
2697 | |
2698 | try_eval(in, CEPH_CAP_LOCKS); | |
7c673cae FG |
2699 | } |
2700 | ||
2701 | ||
2702 | class C_MDL_CheckMaxSize : public LockerContext { | |
2703 | CInode *in; | |
2704 | uint64_t new_max_size; | |
2705 | uint64_t newsize; | |
2706 | utime_t mtime; | |
2707 | ||
2708 | public: | |
2709 | C_MDL_CheckMaxSize(Locker *l, CInode *i, uint64_t _new_max_size, | |
2710 | uint64_t _newsize, utime_t _mtime) : | |
2711 | LockerContext(l), in(i), | |
2712 | new_max_size(_new_max_size), newsize(_newsize), mtime(_mtime) | |
2713 | { | |
2714 | in->get(CInode::PIN_PTRWAITER); | |
2715 | } | |
2716 | void finish(int r) override { | |
2717 | if (in->is_auth()) | |
2718 | locker->check_inode_max_size(in, false, new_max_size, newsize, mtime); | |
2719 | in->put(CInode::PIN_PTRWAITER); | |
2720 | } | |
2721 | }; | |
2722 | ||
f67539c2 | 2723 | uint64_t Locker::calc_new_max_size(const CInode::inode_const_ptr &pi, uint64_t size) |
31f18b77 FG |
2724 | { |
2725 | uint64_t new_max = (size + 1) << 1; | |
11fdf7f2 | 2726 | uint64_t max_inc = g_conf()->mds_client_writeable_range_max_inc_objs; |
31f18b77 | 2727 | if (max_inc > 0) { |
b32b8144 | 2728 | max_inc *= pi->layout.object_size; |
11fdf7f2 | 2729 | new_max = std::min(new_max, size + max_inc); |
31f18b77 | 2730 | } |
11fdf7f2 | 2731 | return round_up_to(new_max, pi->get_layout_size_increment()); |
31f18b77 | 2732 | } |
7c673cae | 2733 | |
f91f0fd5 | 2734 | bool Locker::check_client_ranges(CInode *in, uint64_t size) |
7c673cae | 2735 | { |
f67539c2 | 2736 | const auto& latest = in->get_projected_inode(); |
7c673cae | 2737 | uint64_t ms; |
a8e16298 | 2738 | if (latest->has_layout()) { |
31f18b77 | 2739 | ms = calc_new_max_size(latest, size); |
7c673cae FG |
2740 | } else { |
2741 | // Layout-less directories like ~mds0/, have zero size | |
2742 | ms = 0; | |
2743 | } | |
2744 | ||
f91f0fd5 TL |
2745 | auto it = latest->client_ranges.begin(); |
2746 | for (auto &p : in->client_caps) { | |
2747 | if ((p.second.issued() | p.second.wanted()) & CEPH_CAP_ANY_FILE_WR) { | |
2748 | if (it == latest->client_ranges.end()) | |
2749 | return true; | |
2750 | if (it->first != p.first) | |
2751 | return true; | |
2752 | if (ms > it->second.range.last) | |
2753 | return true; | |
2754 | ++it; | |
2755 | } | |
2756 | } | |
2757 | return it != latest->client_ranges.end(); | |
2758 | } | |
2759 | ||
2760 | bool Locker::calc_new_client_ranges(CInode *in, uint64_t size, bool *max_increased) | |
2761 | { | |
f67539c2 | 2762 | const auto& latest = in->get_projected_inode(); |
f91f0fd5 | 2763 | uint64_t ms; |
f67539c2 TL |
2764 | if (latest->has_layout()) { |
2765 | ms = calc_new_max_size(latest, size); | |
f91f0fd5 TL |
2766 | } else { |
2767 | // Layout-less directories like ~mds0/, have zero size | |
2768 | ms = 0; | |
2769 | } | |
2770 | ||
f67539c2 | 2771 | auto pi = in->_get_projected_inode(); |
f91f0fd5 TL |
2772 | bool updated = false; |
2773 | ||
7c673cae FG |
2774 | // increase ranges as appropriate. |
2775 | // shrink to 0 if no WR|BUFFER caps issued. | |
f91f0fd5 | 2776 | auto it = pi->client_ranges.begin(); |
11fdf7f2 TL |
2777 | for (auto &p : in->client_caps) { |
2778 | if ((p.second.issued() | p.second.wanted()) & CEPH_CAP_ANY_FILE_WR) { | |
f91f0fd5 TL |
2779 | while (it != pi->client_ranges.end() && it->first < p.first) { |
2780 | it = pi->client_ranges.erase(it); | |
2781 | updated = true; | |
2782 | } | |
2783 | ||
2784 | if (it != pi->client_ranges.end() && it->first == p.first) { | |
2785 | if (ms > it->second.range.last) { | |
2786 | it->second.range.last = ms; | |
2787 | updated = true; | |
2788 | if (max_increased) | |
2789 | *max_increased = true; | |
2790 | } | |
7c673cae | 2791 | } else { |
f91f0fd5 TL |
2792 | it = pi->client_ranges.emplace_hint(it, std::piecewise_construct, |
2793 | std::forward_as_tuple(p.first), | |
2794 | std::forward_as_tuple()); | |
2795 | it->second.range.last = ms; | |
2796 | it->second.follows = in->first - 1; | |
2797 | updated = true; | |
2798 | if (max_increased) | |
2799 | *max_increased = true; | |
7c673cae | 2800 | } |
f91f0fd5 TL |
2801 | p.second.mark_clientwriteable(); |
2802 | ++it; | |
a8e16298 | 2803 | } else { |
f91f0fd5 | 2804 | p.second.clear_clientwriteable(); |
7c673cae FG |
2805 | } |
2806 | } | |
f91f0fd5 TL |
2807 | while (it != pi->client_ranges.end()) { |
2808 | it = pi->client_ranges.erase(it); | |
2809 | updated = true; | |
2810 | } | |
2811 | if (updated) { | |
2812 | if (pi->client_ranges.empty()) | |
2813 | in->clear_clientwriteable(); | |
2814 | else | |
2815 | in->mark_clientwriteable(); | |
2816 | } | |
2817 | return updated; | |
7c673cae FG |
2818 | } |
2819 | ||
2820 | bool Locker::check_inode_max_size(CInode *in, bool force_wrlock, | |
2821 | uint64_t new_max_size, uint64_t new_size, | |
2822 | utime_t new_mtime) | |
2823 | { | |
11fdf7f2 TL |
2824 | ceph_assert(in->is_auth()); |
2825 | ceph_assert(in->is_file()); | |
7c673cae | 2826 | |
f67539c2 | 2827 | const auto& latest = in->get_projected_inode(); |
7c673cae FG |
2828 | uint64_t size = latest->size; |
2829 | bool update_size = new_size > 0; | |
7c673cae FG |
2830 | |
2831 | if (update_size) { | |
11fdf7f2 TL |
2832 | new_size = size = std::max(size, new_size); |
2833 | new_mtime = std::max(new_mtime, latest->mtime); | |
7c673cae FG |
2834 | if (latest->size == new_size && latest->mtime == new_mtime) |
2835 | update_size = false; | |
2836 | } | |
2837 | ||
f91f0fd5 TL |
2838 | bool new_ranges = check_client_ranges(in, std::max(new_max_size, size)); |
2839 | if (!update_size && !new_ranges) { | |
2840 | dout(20) << "check_inode_max_size no-op on " << *in << dendl; | |
2841 | return false; | |
2842 | } | |
2843 | ||
2844 | dout(10) << "check_inode_max_size new_ranges " << new_ranges | |
2845 | << " update_size " << update_size | |
2846 | << " on " << *in << dendl; | |
2847 | ||
a8e16298 | 2848 | if (in->is_frozen()) { |
f91f0fd5 TL |
2849 | dout(10) << "check_inode_max_size frozen, waiting on " << *in << dendl; |
2850 | in->add_waiter(CInode::WAIT_UNFREEZE, | |
2851 | new C_MDL_CheckMaxSize(this, in, new_max_size, new_size, new_mtime)); | |
2852 | return false; | |
a8e16298 TL |
2853 | } else if (!force_wrlock && !in->filelock.can_wrlock(in->get_loner())) { |
2854 | // lock? | |
2855 | if (in->filelock.is_stable()) { | |
2856 | if (in->get_target_loner() >= 0) | |
2857 | file_excl(&in->filelock); | |
2858 | else | |
2859 | simple_lock(&in->filelock); | |
2860 | } | |
f91f0fd5 | 2861 | if (!in->filelock.can_wrlock(in->get_loner())) { |
7c673cae | 2862 | dout(10) << "check_inode_max_size can't wrlock, waiting on " << *in << dendl; |
f91f0fd5 TL |
2863 | in->filelock.add_waiter(SimpleLock::WAIT_STABLE, |
2864 | new C_MDL_CheckMaxSize(this, in, new_max_size, new_size, new_mtime)); | |
2865 | return false; | |
7c673cae FG |
2866 | } |
2867 | } | |
2868 | ||
2869 | MutationRef mut(new MutationImpl()); | |
2870 | mut->ls = mds->mdlog->get_current_segment(); | |
2871 | ||
f67539c2 TL |
2872 | auto pi = in->project_inode(mut); |
2873 | pi.inode->version = in->pre_dirty(); | |
7c673cae | 2874 | |
f91f0fd5 TL |
2875 | bool max_increased = false; |
2876 | if (new_ranges && | |
2877 | calc_new_client_ranges(in, std::max(new_max_size, size), &max_increased)) { | |
2878 | dout(10) << "check_inode_max_size client_ranges " | |
2879 | << in->get_previous_projected_inode()->client_ranges | |
f67539c2 | 2880 | << " -> " << pi.inode->client_ranges << dendl; |
7c673cae FG |
2881 | } |
2882 | ||
2883 | if (update_size) { | |
f67539c2 TL |
2884 | dout(10) << "check_inode_max_size size " << pi.inode->size << " -> " << new_size << dendl; |
2885 | pi.inode->size = new_size; | |
2886 | pi.inode->rstat.rbytes = new_size; | |
2887 | dout(10) << "check_inode_max_size mtime " << pi.inode->mtime << " -> " << new_mtime << dendl; | |
2888 | pi.inode->mtime = new_mtime; | |
2889 | if (new_mtime > pi.inode->ctime) { | |
2890 | pi.inode->ctime = new_mtime; | |
2891 | if (new_mtime > pi.inode->rstat.rctime) | |
2892 | pi.inode->rstat.rctime = new_mtime; | |
91327a77 | 2893 | } |
7c673cae FG |
2894 | } |
2895 | ||
2896 | // use EOpen if the file is still open; otherwise, use EUpdate. | |
2897 | // this is just an optimization to push open files forward into | |
2898 | // newer log segments. | |
2899 | LogEvent *le; | |
2900 | EMetaBlob *metablob; | |
2901 | if (in->is_any_caps_wanted() && in->last == CEPH_NOSNAP) { | |
2902 | EOpen *eo = new EOpen(mds->mdlog); | |
2903 | eo->add_ino(in->ino()); | |
2904 | metablob = &eo->metablob; | |
2905 | le = eo; | |
7c673cae FG |
2906 | } else { |
2907 | EUpdate *eu = new EUpdate(mds->mdlog, "check_inode_max_size"); | |
2908 | metablob = &eu->metablob; | |
2909 | le = eu; | |
2910 | } | |
2911 | mds->mdlog->start_entry(le); | |
f67539c2 TL |
2912 | |
2913 | mdcache->predirty_journal_parents(mut, metablob, in, 0, PREDIRTY_PRIMARY); | |
2914 | // no cow, here! | |
2915 | CDentry *parent = in->get_projected_parent_dn(); | |
2916 | metablob->add_primary_dentry(parent, in, true); | |
2917 | mdcache->journal_dirty_inode(mut.get(), metablob, in); | |
2918 | ||
11fdf7f2 | 2919 | mds->mdlog->submit_entry(le, new C_Locker_FileUpdate_finish(this, in, mut, |
9f95a23c | 2920 | UPDATE_SHAREMAX, ref_t<MClientCaps>())); |
7c673cae FG |
2921 | wrlock_force(&in->filelock, mut); // wrlock for duration of journal |
2922 | mut->auth_pin(in); | |
2923 | ||
2924 | // make max_size _increase_ timely | |
2925 | if (max_increased) | |
2926 | mds->mdlog->flush(); | |
2927 | ||
2928 | return true; | |
2929 | } | |
2930 | ||
2931 | ||
2932 | void Locker::share_inode_max_size(CInode *in, Capability *only_cap) | |
2933 | { | |
2934 | /* | |
2935 | * only share if currently issued a WR cap. if client doesn't have it, | |
2936 | * file_max doesn't matter, and the client will get it if/when they get | |
2937 | * the cap later. | |
2938 | */ | |
2939 | dout(10) << "share_inode_max_size on " << *in << dendl; | |
11fdf7f2 | 2940 | map<client_t, Capability>::iterator it; |
7c673cae FG |
2941 | if (only_cap) |
2942 | it = in->client_caps.find(only_cap->get_client()); | |
2943 | else | |
2944 | it = in->client_caps.begin(); | |
2945 | for (; it != in->client_caps.end(); ++it) { | |
2946 | const client_t client = it->first; | |
11fdf7f2 | 2947 | Capability *cap = &it->second; |
7c673cae FG |
2948 | if (cap->is_suppress()) |
2949 | continue; | |
2950 | if (cap->pending() & (CEPH_CAP_FILE_WR|CEPH_CAP_FILE_BUFFER)) { | |
2951 | dout(10) << "share_inode_max_size with client." << client << dendl; | |
f67539c2 | 2952 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_grant); |
7c673cae | 2953 | cap->inc_last_seq(); |
9f95a23c | 2954 | auto m = make_message<MClientCaps>(CEPH_CAP_OP_GRANT, |
11fdf7f2 TL |
2955 | in->ino(), |
2956 | in->find_snaprealm()->inode->ino(), | |
2957 | cap->get_cap_id(), | |
2958 | cap->get_last_seq(), | |
2959 | cap->pending(), | |
2960 | cap->wanted(), 0, | |
2961 | cap->get_mseq(), | |
2962 | mds->get_osd_epoch_barrier()); | |
7c673cae FG |
2963 | in->encode_cap_message(m, cap); |
2964 | mds->send_message_client_counted(m, client); | |
2965 | } | |
2966 | if (only_cap) | |
2967 | break; | |
2968 | } | |
2969 | } | |
2970 | ||
2a845540 | 2971 | bool Locker::_need_flush_mdlog(CInode *in, int wanted, bool lock_state_any) |
7c673cae FG |
2972 | { |
2973 | /* flush log if caps are wanted by client but corresponding lock is unstable and locked by | |
2974 | * pending mutations. */ | |
2975 | if (((wanted & (CEPH_CAP_FILE_RD|CEPH_CAP_FILE_WR|CEPH_CAP_FILE_SHARED|CEPH_CAP_FILE_EXCL)) && | |
2a845540 | 2976 | (lock_state_any ? in->filelock.is_locked() : in->filelock.is_unstable_and_locked())) || |
7c673cae | 2977 | ((wanted & (CEPH_CAP_AUTH_SHARED|CEPH_CAP_AUTH_EXCL)) && |
2a845540 | 2978 | (lock_state_any ? in->authlock.is_locked() : in->authlock.is_unstable_and_locked())) || |
7c673cae | 2979 | ((wanted & (CEPH_CAP_LINK_SHARED|CEPH_CAP_LINK_EXCL)) && |
2a845540 | 2980 | (lock_state_any ? in->linklock.is_locked() : in->linklock.is_unstable_and_locked())) || |
7c673cae | 2981 | ((wanted & (CEPH_CAP_XATTR_SHARED|CEPH_CAP_XATTR_EXCL)) && |
2a845540 | 2982 | (lock_state_any ? in->xattrlock.is_locked() : in->xattrlock.is_unstable_and_locked()))) |
7c673cae FG |
2983 | return true; |
2984 | return false; | |
2985 | } | |
2986 | ||
2987 | void Locker::adjust_cap_wanted(Capability *cap, int wanted, int issue_seq) | |
2988 | { | |
2989 | if (ceph_seq_cmp(issue_seq, cap->get_last_issue()) == 0) { | |
2990 | dout(10) << " wanted " << ccap_string(cap->wanted()) | |
2991 | << " -> " << ccap_string(wanted) << dendl; | |
2992 | cap->set_wanted(wanted); | |
2993 | } else if (wanted & ~cap->wanted()) { | |
2994 | dout(10) << " wanted " << ccap_string(cap->wanted()) | |
2995 | << " -> " << ccap_string(wanted) | |
2996 | << " (added caps even though we had seq mismatch!)" << dendl; | |
2997 | cap->set_wanted(wanted | cap->wanted()); | |
2998 | } else { | |
2999 | dout(10) << " NOT changing wanted " << ccap_string(cap->wanted()) | |
3000 | << " -> " << ccap_string(wanted) | |
3001 | << " (issue_seq " << issue_seq << " != last_issue " | |
3002 | << cap->get_last_issue() << ")" << dendl; | |
3003 | return; | |
3004 | } | |
3005 | ||
3006 | CInode *cur = cap->get_inode(); | |
3007 | if (!cur->is_auth()) { | |
3008 | request_inode_file_caps(cur); | |
3009 | return; | |
3010 | } | |
3011 | ||
11fdf7f2 | 3012 | if (cap->wanted()) { |
7c673cae FG |
3013 | if (cur->state_test(CInode::STATE_RECOVERING) && |
3014 | (cap->wanted() & (CEPH_CAP_FILE_RD | | |
3015 | CEPH_CAP_FILE_WR))) { | |
3016 | mds->mdcache->recovery_queue.prioritize(cur); | |
3017 | } | |
3018 | ||
11fdf7f2 TL |
3019 | if (mdcache->open_file_table.should_log_open(cur)) { |
3020 | ceph_assert(cur->last == CEPH_NOSNAP); | |
7c673cae FG |
3021 | EOpen *le = new EOpen(mds->mdlog); |
3022 | mds->mdlog->start_entry(le); | |
3023 | le->add_clean_inode(cur); | |
7c673cae FG |
3024 | mds->mdlog->submit_entry(le); |
3025 | } | |
3026 | } | |
3027 | } | |
3028 | ||
11fdf7f2 TL |
3029 | void Locker::snapflush_nudge(CInode *in) |
3030 | { | |
3031 | ceph_assert(in->last != CEPH_NOSNAP); | |
3032 | if (in->client_snap_caps.empty()) | |
3033 | return; | |
3034 | ||
3035 | CInode *head = mdcache->get_inode(in->ino()); | |
3036 | // head inode gets unpinned when snapflush starts. It might get trimmed | |
3037 | // before snapflush finishes. | |
3038 | if (!head) | |
3039 | return; | |
7c673cae | 3040 | |
11fdf7f2 TL |
3041 | ceph_assert(head->is_auth()); |
3042 | if (head->client_need_snapflush.empty()) | |
3043 | return; | |
3044 | ||
3045 | SimpleLock *hlock = head->get_lock(CEPH_LOCK_IFILE); | |
3046 | if (hlock->get_state() == LOCK_SYNC || !hlock->is_stable()) { | |
3047 | hlock = NULL; | |
3048 | for (int i = 0; i < num_cinode_locks; i++) { | |
3049 | SimpleLock *lock = head->get_lock(cinode_lock_info[i].lock); | |
3050 | if (lock->get_state() != LOCK_SYNC && lock->is_stable()) { | |
3051 | hlock = lock; | |
3052 | break; | |
3053 | } | |
3054 | } | |
3055 | } | |
3056 | if (hlock) { | |
3057 | _rdlock_kick(hlock, true); | |
3058 | } else { | |
3059 | // also, requeue, in case of unstable lock | |
3060 | need_snapflush_inodes.push_back(&in->item_caps); | |
3061 | } | |
3062 | } | |
3063 | ||
3064 | void Locker::mark_need_snapflush_inode(CInode *in) | |
3065 | { | |
3066 | ceph_assert(in->last != CEPH_NOSNAP); | |
3067 | if (!in->item_caps.is_on_list()) { | |
3068 | need_snapflush_inodes.push_back(&in->item_caps); | |
3069 | utime_t now = ceph_clock_now(); | |
3070 | in->last_dirstat_prop = now; | |
3071 | dout(10) << "mark_need_snapflush_inode " << *in << " - added at " << now << dendl; | |
3072 | } | |
3073 | } | |
7c673cae | 3074 | |
494da23a TL |
3075 | bool Locker::is_revoking_any_caps_from(client_t client) |
3076 | { | |
3077 | auto it = revoking_caps_by_client.find(client); | |
3078 | if (it == revoking_caps_by_client.end()) | |
3079 | return false; | |
3080 | return !it->second.empty(); | |
3081 | } | |
3082 | ||
c07f9fc5 | 3083 | void Locker::_do_null_snapflush(CInode *head_in, client_t client, snapid_t last) |
7c673cae FG |
3084 | { |
3085 | dout(10) << "_do_null_snapflush client." << client << " on " << *head_in << dendl; | |
c07f9fc5 FG |
3086 | for (auto p = head_in->client_need_snapflush.begin(); |
3087 | p != head_in->client_need_snapflush.end() && p->first < last; ) { | |
7c673cae | 3088 | snapid_t snapid = p->first; |
94b18763 | 3089 | auto &clients = p->second; |
7c673cae FG |
3090 | ++p; // be careful, q loop below depends on this |
3091 | ||
3092 | if (clients.count(client)) { | |
3093 | dout(10) << " doing async NULL snapflush on " << snapid << " from client." << client << dendl; | |
b32b8144 | 3094 | CInode *sin = mdcache->pick_inode_snap(head_in, snapid - 1); |
11fdf7f2 TL |
3095 | ceph_assert(sin); |
3096 | ceph_assert(sin->first <= snapid); | |
9f95a23c | 3097 | _do_snap_update(sin, snapid, 0, sin->first - 1, client, ref_t<MClientCaps>(), ref_t<MClientCaps>()); |
7c673cae FG |
3098 | head_in->remove_need_snapflush(sin, snapid, client); |
3099 | } | |
3100 | } | |
3101 | } | |
3102 | ||
3103 | ||
3104 | bool Locker::should_defer_client_cap_frozen(CInode *in) | |
3105 | { | |
9f95a23c TL |
3106 | if (in->is_frozen()) |
3107 | return true; | |
3108 | ||
7c673cae | 3109 | /* |
9f95a23c TL |
3110 | * This policy needs to be AT LEAST as permissive as allowing a client |
3111 | * request to go forward, or else a client request can release something, | |
3112 | * the release gets deferred, but the request gets processed and deadlocks | |
3113 | * because when the caps can't get revoked. | |
7c673cae | 3114 | * |
9f95a23c TL |
3115 | * No auth_pin implies that there is no unstable lock and @in is not auth |
3116 | * pinnned by client request. If parent dirfrag is auth pinned by a lock | |
3117 | * cache, later request from lock cache owner may forcibly auth pin the @in. | |
7c673cae | 3118 | */ |
9f95a23c TL |
3119 | if (in->is_freezing() && in->get_num_auth_pins() == 0) { |
3120 | CDir* dir = in->get_parent_dir(); | |
3121 | if (!dir || !dir->is_auth_pinned_by_lock_cache()) | |
3122 | return true; | |
3123 | } | |
3124 | return false; | |
7c673cae FG |
3125 | } |
3126 | ||
9f95a23c | 3127 | void Locker::handle_client_caps(const cref_t<MClientCaps> &m) |
7c673cae | 3128 | { |
7c673cae | 3129 | client_t client = m->get_source().num(); |
7c673cae | 3130 | snapid_t follows = m->get_snap_follows(); |
11fdf7f2 TL |
3131 | auto op = m->get_op(); |
3132 | auto dirty = m->get_dirty(); | |
7c673cae | 3133 | dout(7) << "handle_client_caps " |
7c673cae FG |
3134 | << " on " << m->get_ino() |
3135 | << " tid " << m->get_client_tid() << " follows " << follows | |
11fdf7f2 TL |
3136 | << " op " << ceph_cap_op_name(op) |
3137 | << " flags 0x" << std::hex << m->flags << std::dec << dendl; | |
7c673cae | 3138 | |
94b18763 | 3139 | Session *session = mds->get_session(m); |
7c673cae FG |
3140 | if (!mds->is_clientreplay() && !mds->is_active() && !mds->is_stopping()) { |
3141 | if (!session) { | |
3142 | dout(5) << " no session, dropping " << *m << dendl; | |
7c673cae FG |
3143 | return; |
3144 | } | |
3145 | if (session->is_closed() || | |
3146 | session->is_closing() || | |
3147 | session->is_killing()) { | |
3148 | dout(7) << " session closed|closing|killing, dropping " << *m << dendl; | |
7c673cae FG |
3149 | return; |
3150 | } | |
11fdf7f2 TL |
3151 | if ((mds->is_reconnect() || mds->get_want_state() == MDSMap::STATE_RECONNECT) && |
3152 | dirty && m->get_client_tid() > 0 && | |
7c673cae | 3153 | !session->have_completed_flush(m->get_client_tid())) { |
11fdf7f2 TL |
3154 | mdcache->set_reconnected_dirty_caps(client, m->get_ino(), dirty, |
3155 | op == CEPH_CAP_OP_FLUSHSNAP); | |
7c673cae FG |
3156 | } |
3157 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
3158 | return; | |
3159 | } | |
3160 | ||
f67539c2 TL |
3161 | if (mds->logger) mds->logger->inc(l_mdss_handle_client_caps); |
3162 | if (dirty) { | |
3163 | if (mds->logger) mds->logger->inc(l_mdss_handle_client_caps_dirty); | |
3164 | } | |
3165 | ||
7c673cae FG |
3166 | if (m->get_client_tid() > 0 && session && |
3167 | session->have_completed_flush(m->get_client_tid())) { | |
3168 | dout(7) << "handle_client_caps already flushed tid " << m->get_client_tid() | |
3169 | << " for client." << client << dendl; | |
9f95a23c | 3170 | ref_t<MClientCaps> ack; |
11fdf7f2 | 3171 | if (op == CEPH_CAP_OP_FLUSHSNAP) { |
f67539c2 | 3172 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_flushsnap_ack); |
9f95a23c | 3173 | ack = make_message<MClientCaps>(CEPH_CAP_OP_FLUSHSNAP_ACK, m->get_ino(), 0, 0, 0, 0, 0, dirty, 0, mds->get_osd_epoch_barrier()); |
7c673cae | 3174 | } else { |
f67539c2 | 3175 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_flush_ack); |
9f95a23c | 3176 | ack = make_message<MClientCaps>(CEPH_CAP_OP_FLUSH_ACK, m->get_ino(), 0, m->get_cap_id(), m->get_seq(), m->get_caps(), 0, dirty, 0, mds->get_osd_epoch_barrier()); |
7c673cae FG |
3177 | } |
3178 | ack->set_snap_follows(follows); | |
3179 | ack->set_client_tid(m->get_client_tid()); | |
3180 | mds->send_message_client_counted(ack, m->get_connection()); | |
11fdf7f2 | 3181 | if (op == CEPH_CAP_OP_FLUSHSNAP) { |
7c673cae FG |
3182 | return; |
3183 | } else { | |
3184 | // fall-thru because the message may release some caps | |
11fdf7f2 TL |
3185 | dirty = false; |
3186 | op = CEPH_CAP_OP_UPDATE; | |
7c673cae FG |
3187 | } |
3188 | } | |
3189 | ||
3190 | // "oldest flush tid" > 0 means client uses unique TID for each flush | |
3191 | if (m->get_oldest_flush_tid() > 0 && session) { | |
3192 | if (session->trim_completed_flushes(m->get_oldest_flush_tid())) { | |
3193 | mds->mdlog->get_current_segment()->touched_sessions.insert(session->info.inst.name); | |
3194 | ||
3195 | if (session->get_num_trim_flushes_warnings() > 0 && | |
11fdf7f2 | 3196 | session->get_num_completed_flushes() * 2 < g_conf()->mds_max_completed_flushes) |
7c673cae FG |
3197 | session->reset_num_trim_flushes_warnings(); |
3198 | } else { | |
3199 | if (session->get_num_completed_flushes() >= | |
11fdf7f2 | 3200 | (g_conf()->mds_max_completed_flushes << session->get_num_trim_flushes_warnings())) { |
7c673cae | 3201 | session->inc_num_trim_flushes_warnings(); |
f67539c2 TL |
3202 | CachedStackStringStream css; |
3203 | *css << "client." << session->get_client() << " does not advance its oldest_flush_tid (" | |
3204 | << m->get_oldest_flush_tid() << "), " | |
3205 | << session->get_num_completed_flushes() | |
3206 | << " completed flushes recorded in session"; | |
3207 | mds->clog->warn() << css->strv(); | |
3208 | dout(20) << __func__ << " " << css->strv() << dendl; | |
7c673cae FG |
3209 | } |
3210 | } | |
3211 | } | |
3212 | ||
3213 | CInode *head_in = mdcache->get_inode(m->get_ino()); | |
3214 | if (!head_in) { | |
3215 | if (mds->is_clientreplay()) { | |
3216 | dout(7) << "handle_client_caps on unknown ino " << m->get_ino() | |
3217 | << ", will try again after replayed client requests" << dendl; | |
3218 | mdcache->wait_replay_cap_reconnect(m->get_ino(), new C_MDS_RetryMessage(mds, m)); | |
3219 | return; | |
3220 | } | |
1adf2230 AA |
3221 | |
3222 | /* | |
3223 | * "handle_client_caps on unknown ino xxx” is normal after migrating a subtree | |
3224 | * Sequence of events that cause this are: | |
3225 | * - client sends caps message to mds.a | |
3226 | * - mds finishes subtree migration, send cap export to client | |
3227 | * - mds trim its cache | |
3228 | * - mds receives cap messages from client | |
3229 | */ | |
3230 | dout(7) << "handle_client_caps on unknown ino " << m->get_ino() << ", dropping" << dendl; | |
7c673cae FG |
3231 | return; |
3232 | } | |
3233 | ||
3234 | if (m->osd_epoch_barrier && !mds->objecter->have_map(m->osd_epoch_barrier)) { | |
3235 | // Pause RADOS operations until we see the required epoch | |
3236 | mds->objecter->set_epoch_barrier(m->osd_epoch_barrier); | |
3237 | } | |
3238 | ||
3239 | if (mds->get_osd_epoch_barrier() < m->osd_epoch_barrier) { | |
3240 | // Record the barrier so that we will retransmit it to clients | |
3241 | mds->set_osd_epoch_barrier(m->osd_epoch_barrier); | |
3242 | } | |
3243 | ||
b32b8144 | 3244 | dout(10) << " head inode " << *head_in << dendl; |
7c673cae FG |
3245 | |
3246 | Capability *cap = 0; | |
b32b8144 | 3247 | cap = head_in->get_client_cap(client); |
7c673cae | 3248 | if (!cap) { |
b32b8144 | 3249 | dout(7) << "handle_client_caps no cap for client." << client << " on " << *head_in << dendl; |
7c673cae FG |
3250 | return; |
3251 | } | |
11fdf7f2 | 3252 | ceph_assert(cap); |
7c673cae FG |
3253 | |
3254 | // freezing|frozen? | |
b32b8144 FG |
3255 | if (should_defer_client_cap_frozen(head_in)) { |
3256 | dout(7) << "handle_client_caps freezing|frozen on " << *head_in << dendl; | |
3257 | head_in->add_waiter(CInode::WAIT_UNFREEZE, new C_MDS_RetryMessage(mds, m)); | |
7c673cae FG |
3258 | return; |
3259 | } | |
3260 | if (ceph_seq_cmp(m->get_mseq(), cap->get_mseq()) < 0) { | |
3261 | dout(7) << "handle_client_caps mseq " << m->get_mseq() << " < " << cap->get_mseq() | |
3262 | << ", dropping" << dendl; | |
7c673cae FG |
3263 | return; |
3264 | } | |
3265 | ||
11fdf7f2 | 3266 | bool need_unpin = false; |
7c673cae FG |
3267 | |
3268 | // flushsnap? | |
3269 | if (op == CEPH_CAP_OP_FLUSHSNAP) { | |
b32b8144 FG |
3270 | if (!head_in->is_auth()) { |
3271 | dout(7) << " not auth, ignoring flushsnap on " << *head_in << dendl; | |
7c673cae FG |
3272 | goto out; |
3273 | } | |
3274 | ||
b32b8144 | 3275 | SnapRealm *realm = head_in->find_snaprealm(); |
7c673cae FG |
3276 | snapid_t snap = realm->get_snap_following(follows); |
3277 | dout(10) << " flushsnap follows " << follows << " -> snap " << snap << dendl; | |
3278 | ||
11fdf7f2 TL |
3279 | auto p = head_in->client_need_snapflush.begin(); |
3280 | if (p != head_in->client_need_snapflush.end() && p->first < snap) { | |
3281 | head_in->auth_pin(this); // prevent subtree frozen | |
3282 | need_unpin = true; | |
3283 | _do_null_snapflush(head_in, client, snap); | |
3284 | } | |
3285 | ||
b32b8144 FG |
3286 | CInode *in = head_in; |
3287 | if (snap != CEPH_NOSNAP) { | |
3288 | in = mdcache->pick_inode_snap(head_in, snap - 1); | |
3289 | if (in != head_in) | |
3290 | dout(10) << " snapped inode " << *in << dendl; | |
3291 | } | |
3292 | ||
7c673cae FG |
3293 | // we can prepare the ack now, since this FLUSHEDSNAP is independent of any |
3294 | // other cap ops. (except possibly duplicate FLUSHSNAP requests, but worst | |
3295 | // case we get a dup response, so whatever.) | |
9f95a23c | 3296 | ref_t<MClientCaps> ack; |
11fdf7f2 | 3297 | if (dirty) { |
9f95a23c | 3298 | ack = make_message<MClientCaps>(CEPH_CAP_OP_FLUSHSNAP_ACK, in->ino(), 0, 0, 0, 0, 0, dirty, 0, mds->get_osd_epoch_barrier()); |
7c673cae FG |
3299 | ack->set_snap_follows(follows); |
3300 | ack->set_client_tid(m->get_client_tid()); | |
3301 | ack->set_oldest_flush_tid(m->get_oldest_flush_tid()); | |
3302 | } | |
3303 | ||
3304 | if (in == head_in || | |
3305 | (head_in->client_need_snapflush.count(snap) && | |
3306 | head_in->client_need_snapflush[snap].count(client))) { | |
3307 | dout(7) << " flushsnap snap " << snap | |
3308 | << " client." << client << " on " << *in << dendl; | |
3309 | ||
3310 | // this cap now follows a later snap (i.e. the one initiating this flush, or later) | |
3311 | if (in == head_in) | |
3312 | cap->client_follows = snap < CEPH_NOSNAP ? snap : realm->get_newest_seq(); | |
3313 | ||
11fdf7f2 | 3314 | _do_snap_update(in, snap, dirty, follows, client, m, ack); |
7c673cae FG |
3315 | |
3316 | if (in != head_in) | |
3317 | head_in->remove_need_snapflush(in, snap, client); | |
7c673cae FG |
3318 | } else { |
3319 | dout(7) << " not expecting flushsnap " << snap << " from client." << client << " on " << *in << dendl; | |
f67539c2 TL |
3320 | if (ack) { |
3321 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_flushsnap_ack); | |
7c673cae | 3322 | mds->send_message_client_counted(ack, m->get_connection()); |
f67539c2 | 3323 | } |
7c673cae FG |
3324 | } |
3325 | goto out; | |
3326 | } | |
3327 | ||
3328 | if (cap->get_cap_id() != m->get_cap_id()) { | |
3329 | dout(7) << " ignoring client capid " << m->get_cap_id() << " != my " << cap->get_cap_id() << dendl; | |
3330 | } else { | |
b32b8144 FG |
3331 | CInode *in = head_in; |
3332 | if (follows > 0) { | |
3333 | in = mdcache->pick_inode_snap(head_in, follows); | |
3334 | // intermediate snap inodes | |
3335 | while (in != head_in) { | |
11fdf7f2 TL |
3336 | ceph_assert(in->last != CEPH_NOSNAP); |
3337 | if (in->is_auth() && dirty) { | |
b32b8144 | 3338 | dout(10) << " updating intermediate snapped inode " << *in << dendl; |
9f95a23c | 3339 | _do_cap_update(in, NULL, dirty, follows, m, ref_t<MClientCaps>()); |
b32b8144 FG |
3340 | } |
3341 | in = mdcache->pick_inode_snap(head_in, in->last); | |
7c673cae | 3342 | } |
7c673cae FG |
3343 | } |
3344 | ||
3345 | // head inode, and cap | |
9f95a23c | 3346 | ref_t<MClientCaps> ack; |
7c673cae FG |
3347 | |
3348 | int caps = m->get_caps(); | |
3349 | if (caps & ~cap->issued()) { | |
3350 | dout(10) << " confirming not issued caps " << ccap_string(caps & ~cap->issued()) << dendl; | |
3351 | caps &= cap->issued(); | |
3352 | } | |
3353 | ||
9f95a23c | 3354 | int revoked = cap->confirm_receipt(m->get_seq(), caps); |
7c673cae FG |
3355 | dout(10) << " follows " << follows |
3356 | << " retains " << ccap_string(m->get_caps()) | |
11fdf7f2 | 3357 | << " dirty " << ccap_string(dirty) |
7c673cae FG |
3358 | << " on " << *in << dendl; |
3359 | ||
9f95a23c TL |
3360 | if (revoked & CEPH_CAP_ANY_DIR_OPS) |
3361 | eval_lock_caches(cap); | |
7c673cae FG |
3362 | |
3363 | // missing/skipped snapflush? | |
3364 | // The client MAY send a snapflush if it is issued WR/EXCL caps, but | |
3365 | // presently only does so when it has actual dirty metadata. But, we | |
3366 | // set up the need_snapflush stuff based on the issued caps. | |
3367 | // We can infer that the client WONT send a FLUSHSNAP once they have | |
3368 | // released all WR/EXCL caps (the FLUSHSNAP always comes before the cap | |
3369 | // update/release). | |
3370 | if (!head_in->client_need_snapflush.empty()) { | |
11fdf7f2 TL |
3371 | if (!(cap->issued() & CEPH_CAP_ANY_FILE_WR) && |
3372 | !(m->flags & MClientCaps::FLAG_PENDING_CAPSNAP)) { | |
3373 | head_in->auth_pin(this); // prevent subtree frozen | |
3374 | need_unpin = true; | |
7c673cae FG |
3375 | _do_null_snapflush(head_in, client); |
3376 | } else { | |
3377 | dout(10) << " revocation in progress, not making any conclusions about null snapflushes" << dendl; | |
3378 | } | |
3379 | } | |
eafe8130 TL |
3380 | if (cap->need_snapflush() && !(m->flags & MClientCaps::FLAG_PENDING_CAPSNAP)) |
3381 | cap->clear_needsnapflush(); | |
11fdf7f2 | 3382 | |
11fdf7f2 TL |
3383 | if (dirty && in->is_auth()) { |
3384 | dout(7) << " flush client." << client << " dirty " << ccap_string(dirty) | |
7c673cae | 3385 | << " seq " << m->get_seq() << " on " << *in << dendl; |
9f95a23c | 3386 | ack = make_message<MClientCaps>(CEPH_CAP_OP_FLUSH_ACK, in->ino(), 0, cap->get_cap_id(), m->get_seq(), |
11fdf7f2 | 3387 | m->get_caps(), 0, dirty, 0, mds->get_osd_epoch_barrier()); |
7c673cae FG |
3388 | ack->set_client_tid(m->get_client_tid()); |
3389 | ack->set_oldest_flush_tid(m->get_oldest_flush_tid()); | |
3390 | } | |
3391 | ||
3392 | // filter wanted based on what we could ever give out (given auth/replica status) | |
11fdf7f2 | 3393 | bool need_flush = m->flags & MClientCaps::FLAG_SYNC; |
f64942e4 | 3394 | int new_wanted = m->get_wanted(); |
7c673cae | 3395 | if (new_wanted != cap->wanted()) { |
f64942e4 | 3396 | if (!need_flush && in->is_auth() && (new_wanted & ~cap->pending())) { |
7c673cae FG |
3397 | // exapnding caps. make sure we aren't waiting for a log flush |
3398 | need_flush = _need_flush_mdlog(head_in, new_wanted & ~cap->pending()); | |
3399 | } | |
3400 | ||
3401 | adjust_cap_wanted(cap, new_wanted, m->get_issue_seq()); | |
3402 | } | |
11fdf7f2 | 3403 | |
eafe8130 TL |
3404 | if (in->is_auth() && |
3405 | _do_cap_update(in, cap, dirty, follows, m, ack, &need_flush)) { | |
3406 | // updated | |
7c673cae FG |
3407 | eval(in, CEPH_CAP_LOCKS); |
3408 | ||
3409 | if (!need_flush && (cap->wanted() & ~cap->pending())) | |
3410 | need_flush = _need_flush_mdlog(in, cap->wanted() & ~cap->pending()); | |
3411 | } else { | |
3412 | // no update, ack now. | |
f67539c2 TL |
3413 | if (ack) { |
3414 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_flush_ack); | |
7c673cae | 3415 | mds->send_message_client_counted(ack, m->get_connection()); |
f67539c2 | 3416 | } |
7c673cae FG |
3417 | |
3418 | bool did_issue = eval(in, CEPH_CAP_LOCKS); | |
3419 | if (!did_issue && (cap->wanted() & ~cap->pending())) | |
3420 | issue_caps(in, cap); | |
3421 | ||
3422 | if (cap->get_last_seq() == 0 && | |
3423 | (cap->pending() & (CEPH_CAP_FILE_WR|CEPH_CAP_FILE_BUFFER))) { | |
7c673cae FG |
3424 | share_inode_max_size(in, cap); |
3425 | } | |
3426 | } | |
3427 | ||
3428 | if (need_flush) | |
3429 | mds->mdlog->flush(); | |
3430 | } | |
3431 | ||
3432 | out: | |
11fdf7f2 TL |
3433 | if (need_unpin) |
3434 | head_in->auth_unpin(this); | |
7c673cae FG |
3435 | } |
3436 | ||
3437 | ||
3438 | class C_Locker_RetryRequestCapRelease : public LockerContext { | |
3439 | client_t client; | |
3440 | ceph_mds_request_release item; | |
3441 | public: | |
3442 | C_Locker_RetryRequestCapRelease(Locker *l, client_t c, const ceph_mds_request_release& it) : | |
3443 | LockerContext(l), client(c), item(it) { } | |
3444 | void finish(int r) override { | |
3445 | string dname; | |
3446 | MDRequestRef null_ref; | |
3447 | locker->process_request_cap_release(null_ref, client, item, dname); | |
3448 | } | |
3449 | }; | |
3450 | ||
3451 | void Locker::process_request_cap_release(MDRequestRef& mdr, client_t client, const ceph_mds_request_release& item, | |
11fdf7f2 | 3452 | std::string_view dname) |
7c673cae FG |
3453 | { |
3454 | inodeno_t ino = (uint64_t)item.ino; | |
3455 | uint64_t cap_id = item.cap_id; | |
3456 | int caps = item.caps; | |
3457 | int wanted = item.wanted; | |
3458 | int seq = item.seq; | |
3459 | int issue_seq = item.issue_seq; | |
3460 | int mseq = item.mseq; | |
3461 | ||
3462 | CInode *in = mdcache->get_inode(ino); | |
3463 | if (!in) | |
3464 | return; | |
3465 | ||
3466 | if (dname.length()) { | |
3467 | frag_t fg = in->pick_dirfrag(dname); | |
3468 | CDir *dir = in->get_dirfrag(fg); | |
3469 | if (dir) { | |
3470 | CDentry *dn = dir->lookup(dname); | |
3471 | if (dn) { | |
3472 | ClientLease *l = dn->get_client_lease(client); | |
3473 | if (l) { | |
92f5a8d4 | 3474 | dout(10) << __func__ << " removing lease on " << *dn << dendl; |
7c673cae FG |
3475 | dn->remove_client_lease(l, this); |
3476 | } else { | |
92f5a8d4 | 3477 | dout(7) << __func__ << " client." << client |
7c673cae FG |
3478 | << " doesn't have lease on " << *dn << dendl; |
3479 | } | |
3480 | } else { | |
92f5a8d4 | 3481 | dout(7) << __func__ << " client." << client << " released lease on dn " |
7c673cae FG |
3482 | << dir->dirfrag() << "/" << dname << " which dne" << dendl; |
3483 | } | |
3484 | } | |
3485 | } | |
3486 | ||
3487 | Capability *cap = in->get_client_cap(client); | |
3488 | if (!cap) | |
3489 | return; | |
3490 | ||
92f5a8d4 | 3491 | dout(10) << __func__ << " client." << client << " " << ccap_string(caps) << " on " << *in |
7c673cae FG |
3492 | << (mdr ? "" : " (DEFERRED, no mdr)") |
3493 | << dendl; | |
3494 | ||
3495 | if (ceph_seq_cmp(mseq, cap->get_mseq()) < 0) { | |
3496 | dout(7) << " mseq " << mseq << " < " << cap->get_mseq() << ", dropping" << dendl; | |
3497 | return; | |
3498 | } | |
3499 | ||
3500 | if (cap->get_cap_id() != cap_id) { | |
3501 | dout(7) << " cap_id " << cap_id << " != " << cap->get_cap_id() << ", dropping" << dendl; | |
3502 | return; | |
3503 | } | |
3504 | ||
3505 | if (should_defer_client_cap_frozen(in)) { | |
3506 | dout(7) << " frozen, deferring" << dendl; | |
3507 | in->add_waiter(CInode::WAIT_UNFREEZE, new C_Locker_RetryRequestCapRelease(this, client, item)); | |
3508 | return; | |
3509 | } | |
3510 | ||
f67539c2 TL |
3511 | if (mds->logger) mds->logger->inc(l_mdss_process_request_cap_release); |
3512 | ||
7c673cae FG |
3513 | if (caps & ~cap->issued()) { |
3514 | dout(10) << " confirming not issued caps " << ccap_string(caps & ~cap->issued()) << dendl; | |
3515 | caps &= cap->issued(); | |
3516 | } | |
9f95a23c TL |
3517 | int revoked = cap->confirm_receipt(seq, caps); |
3518 | if (revoked & CEPH_CAP_ANY_DIR_OPS) | |
3519 | eval_lock_caches(cap); | |
7c673cae FG |
3520 | |
3521 | if (!in->client_need_snapflush.empty() && | |
3522 | (cap->issued() & CEPH_CAP_ANY_FILE_WR) == 0) { | |
3523 | _do_null_snapflush(in, client); | |
3524 | } | |
3525 | ||
3526 | adjust_cap_wanted(cap, wanted, issue_seq); | |
3527 | ||
3528 | if (mdr) | |
3529 | cap->inc_suppress(); | |
3530 | eval(in, CEPH_CAP_LOCKS); | |
3531 | if (mdr) | |
3532 | cap->dec_suppress(); | |
3533 | ||
3534 | // take note; we may need to reissue on this cap later | |
3535 | if (mdr) | |
3536 | mdr->cap_releases[in->vino()] = cap->get_last_seq(); | |
3537 | } | |
3538 | ||
3539 | class C_Locker_RetryKickIssueCaps : public LockerContext { | |
3540 | CInode *in; | |
3541 | client_t client; | |
3542 | ceph_seq_t seq; | |
3543 | public: | |
3544 | C_Locker_RetryKickIssueCaps(Locker *l, CInode *i, client_t c, ceph_seq_t s) : | |
3545 | LockerContext(l), in(i), client(c), seq(s) { | |
3546 | in->get(CInode::PIN_PTRWAITER); | |
3547 | } | |
3548 | void finish(int r) override { | |
3549 | locker->kick_issue_caps(in, client, seq); | |
3550 | in->put(CInode::PIN_PTRWAITER); | |
3551 | } | |
3552 | }; | |
3553 | ||
3554 | void Locker::kick_issue_caps(CInode *in, client_t client, ceph_seq_t seq) | |
3555 | { | |
3556 | Capability *cap = in->get_client_cap(client); | |
a8e16298 | 3557 | if (!cap || cap->get_last_seq() != seq) |
7c673cae FG |
3558 | return; |
3559 | if (in->is_frozen()) { | |
3560 | dout(10) << "kick_issue_caps waiting for unfreeze on " << *in << dendl; | |
3561 | in->add_waiter(CInode::WAIT_UNFREEZE, | |
3562 | new C_Locker_RetryKickIssueCaps(this, in, client, seq)); | |
3563 | return; | |
3564 | } | |
3565 | dout(10) << "kick_issue_caps released at current seq " << seq | |
3566 | << ", reissuing" << dendl; | |
3567 | issue_caps(in, cap); | |
3568 | } | |
3569 | ||
3570 | void Locker::kick_cap_releases(MDRequestRef& mdr) | |
3571 | { | |
3572 | client_t client = mdr->get_client(); | |
3573 | for (map<vinodeno_t,ceph_seq_t>::iterator p = mdr->cap_releases.begin(); | |
3574 | p != mdr->cap_releases.end(); | |
3575 | ++p) { | |
3576 | CInode *in = mdcache->get_inode(p->first); | |
3577 | if (!in) | |
3578 | continue; | |
3579 | kick_issue_caps(in, client, p->second); | |
3580 | } | |
3581 | } | |
3582 | ||
f38dd50b TL |
3583 | __u32 Locker::get_xattr_total_length(CInode::mempool_xattr_map &xattr) |
3584 | { | |
3585 | __u32 total = 0; | |
3586 | ||
3587 | for (const auto &p : xattr) | |
3588 | total += (p.first.length() + p.second.length()); | |
3589 | return total; | |
3590 | } | |
3591 | ||
3592 | void Locker::decode_new_xattrs(CInode::mempool_inode *inode, | |
3593 | CInode::mempool_xattr_map *px, | |
3594 | const cref_t<MClientCaps> &m) | |
3595 | { | |
3596 | CInode::mempool_xattr_map tmp; | |
3597 | ||
3598 | auto p = m->xattrbl.cbegin(); | |
3599 | decode_noshare(tmp, p); | |
3600 | __u32 total = get_xattr_total_length(tmp); | |
3601 | inode->xattr_version = m->head.xattr_version; | |
3602 | if (total > mds->mdsmap->get_max_xattr_size()) { | |
3603 | dout(1) << "Maximum xattr size exceeded: " << total | |
3604 | << " max size: " << mds->mdsmap->get_max_xattr_size() << dendl; | |
3605 | // Ignore new xattr (!!!) but increase xattr version | |
3606 | // XXX how to force the client to drop cached xattrs? | |
3607 | inode->xattr_version++; | |
3608 | } else { | |
3609 | *px = std::move(tmp); | |
3610 | } | |
3611 | } | |
3612 | ||
7c673cae FG |
3613 | /** |
3614 | * m and ack might be NULL, so don't dereference them unless dirty != 0 | |
3615 | */ | |
9f95a23c | 3616 | void Locker::_do_snap_update(CInode *in, snapid_t snap, int dirty, snapid_t follows, client_t client, const cref_t<MClientCaps> &m, const ref_t<MClientCaps> &ack) |
7c673cae FG |
3617 | { |
3618 | dout(10) << "_do_snap_update dirty " << ccap_string(dirty) | |
3619 | << " follows " << follows << " snap " << snap | |
3620 | << " on " << *in << dendl; | |
3621 | ||
3622 | if (snap == CEPH_NOSNAP) { | |
3623 | // hmm, i guess snap was already deleted? just ack! | |
3624 | dout(10) << " wow, the snap following " << follows | |
3625 | << " was already deleted. nothing to record, just ack." << dendl; | |
f67539c2 TL |
3626 | if (ack) { |
3627 | if (ack->get_op() == CEPH_CAP_OP_FLUSHSNAP_ACK) { | |
3628 | if (mds->logger) mds->logger->inc(l_mdss_ceph_cap_op_flushsnap_ack); | |
3629 | } | |
7c673cae | 3630 | mds->send_message_client_counted(ack, m->get_connection()); |
f67539c2 | 3631 | } |
7c673cae FG |
3632 | return; |
3633 | } | |
3634 | ||
3635 | EUpdate *le = new EUpdate(mds->mdlog, "snap flush"); | |
3636 | mds->mdlog->start_entry(le); | |
3637 | MutationRef mut = new MutationImpl(); | |
3638 | mut->ls = mds->mdlog->get_current_segment(); | |
3639 | ||
3640 | // normal metadata updates that we can apply to the head as well. | |
3641 | ||
3642 | // update xattrs? | |
94b18763 FG |
3643 | CInode::mempool_xattr_map *px = nullptr; |
3644 | bool xattrs = (dirty & CEPH_CAP_XATTR_EXCL) && | |
3645 | m->xattrbl.length() && | |
3646 | m->head.xattr_version > in->get_projected_inode()->xattr_version; | |
3647 | ||
f67539c2 TL |
3648 | CInode::mempool_old_inode *oi = nullptr; |
3649 | CInode::old_inode_map_ptr _old_inodes; | |
3650 | if (in->is_any_old_inodes()) { | |
3651 | auto last = in->pick_old_inode(snap); | |
3652 | if (last) { | |
3653 | _old_inodes = CInode::allocate_old_inode_map(*in->get_old_inodes()); | |
3654 | oi = &_old_inodes->at(last); | |
3655 | if (snap > oi->first) { | |
3656 | (*_old_inodes)[snap - 1] = *oi;; | |
3657 | oi->first = snap; | |
3658 | } | |
3659 | } | |
7c673cae FG |
3660 | } |
3661 | ||
94b18763 | 3662 | CInode::mempool_inode *i; |
7c673cae FG |
3663 | if (oi) { |
3664 | dout(10) << " writing into old inode" << dendl; | |
f67539c2 TL |
3665 | auto pi = in->project_inode(mut); |
3666 | pi.inode->version = in->pre_dirty(); | |
94b18763 | 3667 | i = &oi->inode; |
7c673cae FG |
3668 | if (xattrs) |
3669 | px = &oi->xattrs; | |
3670 | } else { | |
f67539c2 TL |
3671 | auto pi = in->project_inode(mut, xattrs); |
3672 | pi.inode->version = in->pre_dirty(); | |
3673 | i = pi.inode.get(); | |
7c673cae | 3674 | if (xattrs) |
94b18763 | 3675 | px = pi.xattrs.get(); |
7c673cae FG |
3676 | } |
3677 | ||
94b18763 | 3678 | _update_cap_fields(in, dirty, m, i); |
7c673cae FG |
3679 | |
3680 | // xattr | |
94b18763 FG |
3681 | if (xattrs) { |
3682 | dout(7) << " xattrs v" << i->xattr_version << " -> " << m->head.xattr_version | |
f38dd50b TL |
3683 | << " len " << m->xattrbl.length() << dendl; |
3684 | decode_new_xattrs(i, px, m); | |
7c673cae FG |
3685 | } |
3686 | ||
94b18763 FG |
3687 | { |
3688 | auto it = i->client_ranges.find(client); | |
3689 | if (it != i->client_ranges.end()) { | |
3690 | if (in->last == snap) { | |
3691 | dout(10) << " removing client_range entirely" << dendl; | |
3692 | i->client_ranges.erase(it); | |
3693 | } else { | |
3694 | dout(10) << " client_range now follows " << snap << dendl; | |
3695 | it->second.follows = snap; | |
3696 | } | |
7c673cae FG |
3697 | } |
3698 | } | |
3699 | ||
f67539c2 TL |
3700 | if (_old_inodes) |
3701 | in->reset_old_inodes(std::move(_old_inodes)); | |
3702 | ||
7c673cae FG |
3703 | mut->auth_pin(in); |
3704 | mdcache->predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY, 0, follows); | |
3705 | mdcache->journal_dirty_inode(mut.get(), &le->metablob, in, follows); | |
3706 | ||
3707 | // "oldest flush tid" > 0 means client uses unique TID for each flush | |
3708 | if (ack && ack->get_oldest_flush_tid() > 0) | |
3709 | le->metablob.add_client_flush(metareqid_t(m->get_source(), ack->get_client_tid()), | |
3710 | ack->get_oldest_flush_tid()); | |
3711 | ||
11fdf7f2 TL |
3712 | mds->mdlog->submit_entry(le, new C_Locker_FileUpdate_finish(this, in, mut, UPDATE_SNAPFLUSH, |
3713 | ack, client)); | |
7c673cae FG |
3714 | } |
3715 | ||
9f95a23c | 3716 | void Locker::_update_cap_fields(CInode *in, int dirty, const cref_t<MClientCaps> &m, CInode::mempool_inode *pi) |
7c673cae FG |
3717 | { |
3718 | if (dirty == 0) | |
3719 | return; | |
3720 | ||
3721 | /* m must be valid if there are dirty caps */ | |
11fdf7f2 | 3722 | ceph_assert(m); |
7c673cae FG |
3723 | uint64_t features = m->get_connection()->get_features(); |
3724 | ||
3725 | if (m->get_ctime() > pi->ctime) { | |
3726 | dout(7) << " ctime " << pi->ctime << " -> " << m->get_ctime() | |
3727 | << " for " << *in << dendl; | |
91327a77 AA |
3728 | pi->ctime = m->get_ctime(); |
3729 | if (m->get_ctime() > pi->rstat.rctime) | |
3730 | pi->rstat.rctime = m->get_ctime(); | |
7c673cae FG |
3731 | } |
3732 | ||
3733 | if ((features & CEPH_FEATURE_FS_CHANGE_ATTR) && | |
3734 | m->get_change_attr() > pi->change_attr) { | |
3735 | dout(7) << " change_attr " << pi->change_attr << " -> " << m->get_change_attr() | |
3736 | << " for " << *in << dendl; | |
3737 | pi->change_attr = m->get_change_attr(); | |
3738 | } | |
3739 | ||
3740 | // file | |
3741 | if (dirty & (CEPH_CAP_FILE_EXCL|CEPH_CAP_FILE_WR)) { | |
3742 | utime_t atime = m->get_atime(); | |
3743 | utime_t mtime = m->get_mtime(); | |
3744 | uint64_t size = m->get_size(); | |
3745 | version_t inline_version = m->inline_version; | |
3746 | ||
3747 | if (((dirty & CEPH_CAP_FILE_WR) && mtime > pi->mtime) || | |
3748 | ((dirty & CEPH_CAP_FILE_EXCL) && mtime != pi->mtime)) { | |
3749 | dout(7) << " mtime " << pi->mtime << " -> " << mtime | |
3750 | << " for " << *in << dendl; | |
3751 | pi->mtime = mtime; | |
91327a77 AA |
3752 | if (mtime > pi->rstat.rctime) |
3753 | pi->rstat.rctime = mtime; | |
7c673cae | 3754 | } |
f67539c2 | 3755 | if (in->is_file() && // ONLY if regular file |
7c673cae FG |
3756 | size > pi->size) { |
3757 | dout(7) << " size " << pi->size << " -> " << size | |
3758 | << " for " << *in << dendl; | |
3759 | pi->size = size; | |
3760 | pi->rstat.rbytes = size; | |
3761 | } | |
f67539c2 | 3762 | if (in->is_file() && |
7c673cae FG |
3763 | (dirty & CEPH_CAP_FILE_WR) && |
3764 | inline_version > pi->inline_data.version) { | |
3765 | pi->inline_data.version = inline_version; | |
3766 | if (inline_version != CEPH_INLINE_NONE && m->inline_data.length() > 0) | |
f67539c2 | 3767 | pi->inline_data.set_data(m->inline_data); |
7c673cae FG |
3768 | else |
3769 | pi->inline_data.free_data(); | |
3770 | } | |
3771 | if ((dirty & CEPH_CAP_FILE_EXCL) && atime != pi->atime) { | |
3772 | dout(7) << " atime " << pi->atime << " -> " << atime | |
3773 | << " for " << *in << dendl; | |
3774 | pi->atime = atime; | |
3775 | } | |
3776 | if ((dirty & CEPH_CAP_FILE_EXCL) && | |
3777 | ceph_seq_cmp(pi->time_warp_seq, m->get_time_warp_seq()) < 0) { | |
3778 | dout(7) << " time_warp_seq " << pi->time_warp_seq << " -> " << m->get_time_warp_seq() | |
3779 | << " for " << *in << dendl; | |
3780 | pi->time_warp_seq = m->get_time_warp_seq(); | |
3781 | } | |
1e59de90 TL |
3782 | if (m->fscrypt_file.size()) |
3783 | pi->fscrypt_file = m->fscrypt_file; | |
7c673cae FG |
3784 | } |
3785 | // auth | |
3786 | if (dirty & CEPH_CAP_AUTH_EXCL) { | |
3787 | if (m->head.uid != pi->uid) { | |
3788 | dout(7) << " uid " << pi->uid | |
3789 | << " -> " << m->head.uid | |
3790 | << " for " << *in << dendl; | |
3791 | pi->uid = m->head.uid; | |
3792 | } | |
3793 | if (m->head.gid != pi->gid) { | |
3794 | dout(7) << " gid " << pi->gid | |
3795 | << " -> " << m->head.gid | |
3796 | << " for " << *in << dendl; | |
3797 | pi->gid = m->head.gid; | |
3798 | } | |
3799 | if (m->head.mode != pi->mode) { | |
3800 | dout(7) << " mode " << oct << pi->mode | |
3801 | << " -> " << m->head.mode << dec | |
3802 | << " for " << *in << dendl; | |
3803 | pi->mode = m->head.mode; | |
3804 | } | |
3805 | if ((features & CEPH_FEATURE_FS_BTIME) && m->get_btime() != pi->btime) { | |
3806 | dout(7) << " btime " << oct << pi->btime | |
3807 | << " -> " << m->get_btime() << dec | |
3808 | << " for " << *in << dendl; | |
3809 | pi->btime = m->get_btime(); | |
3810 | } | |
1e59de90 TL |
3811 | if (m->fscrypt_auth.size()) |
3812 | pi->fscrypt_auth = m->fscrypt_auth; | |
7c673cae FG |
3813 | } |
3814 | } | |
3815 | ||
3816 | /* | |
3817 | * update inode based on cap flush|flushsnap|wanted. | |
3818 | * adjust max_size, if needed. | |
3819 | * if we update, return true; otherwise, false (no updated needed). | |
3820 | */ | |
3821 | bool Locker::_do_cap_update(CInode *in, Capability *cap, | |
3822 | int dirty, snapid_t follows, | |
9f95a23c | 3823 | const cref_t<MClientCaps> &m, const ref_t<MClientCaps> &ack, |
7c673cae FG |
3824 | bool *need_flush) |
3825 | { | |
3826 | dout(10) << "_do_cap_update dirty " << ccap_string(dirty) | |
3827 | << " issued " << ccap_string(cap ? cap->issued() : 0) | |
3828 | << " wanted " << ccap_string(cap ? cap->wanted() : 0) | |
3829 | << " on " << *in << dendl; | |
11fdf7f2 | 3830 | ceph_assert(in->is_auth()); |
7c673cae | 3831 | client_t client = m->get_source().num(); |
f67539c2 | 3832 | const auto& latest = in->get_projected_inode(); |
7c673cae FG |
3833 | |
3834 | // increase or zero max_size? | |
3835 | uint64_t size = m->get_size(); | |
3836 | bool change_max = false; | |
f91f0fd5 | 3837 | uint64_t old_max = latest->get_client_range(client); |
7c673cae FG |
3838 | uint64_t new_max = old_max; |
3839 | ||
3840 | if (in->is_file()) { | |
3841 | bool forced_change_max = false; | |
3842 | dout(20) << "inode is file" << dendl; | |
3843 | if (cap && ((cap->issued() | cap->wanted()) & CEPH_CAP_ANY_FILE_WR)) { | |
3844 | dout(20) << "client has write caps; m->get_max_size=" | |
3845 | << m->get_max_size() << "; old_max=" << old_max << dendl; | |
3846 | if (m->get_max_size() > new_max) { | |
3847 | dout(10) << "client requests file_max " << m->get_max_size() | |
3848 | << " > max " << old_max << dendl; | |
3849 | change_max = true; | |
3850 | forced_change_max = true; | |
31f18b77 | 3851 | new_max = calc_new_max_size(latest, m->get_max_size()); |
7c673cae | 3852 | } else { |
31f18b77 | 3853 | new_max = calc_new_max_size(latest, size); |
7c673cae FG |
3854 | |
3855 | if (new_max > old_max) | |
3856 | change_max = true; | |
3857 | else | |
3858 | new_max = old_max; | |
3859 | } | |
3860 | } else { | |
3861 | if (old_max) { | |
3862 | change_max = true; | |
3863 | new_max = 0; | |
3864 | } | |
3865 | } | |
3866 | ||
3867 | if (in->last == CEPH_NOSNAP && | |
3868 | change_max && | |
3869 | !in->filelock.can_wrlock(client) && | |
3870 | !in->filelock.can_force_wrlock(client)) { | |
3871 | dout(10) << " i want to change file_max, but lock won't allow it (yet)" << dendl; | |
3872 | if (in->filelock.is_stable()) { | |
3873 | bool need_issue = false; | |
3874 | if (cap) | |
3875 | cap->inc_suppress(); | |
11fdf7f2 | 3876 | if (in->get_mds_caps_wanted().empty() && |
7c673cae FG |
3877 | (in->get_loner() >= 0 || (in->get_wanted_loner() >= 0 && in->try_set_loner()))) { |
3878 | if (in->filelock.get_state() != LOCK_EXCL) | |
3879 | file_excl(&in->filelock, &need_issue); | |
3880 | } else | |
3881 | simple_lock(&in->filelock, &need_issue); | |
3882 | if (need_issue) | |
3883 | issue_caps(in); | |
3884 | if (cap) | |
3885 | cap->dec_suppress(); | |
3886 | } | |
3887 | if (!in->filelock.can_wrlock(client) && | |
3888 | !in->filelock.can_force_wrlock(client)) { | |
3889 | C_MDL_CheckMaxSize *cms = new C_MDL_CheckMaxSize(this, in, | |
3890 | forced_change_max ? new_max : 0, | |
3891 | 0, utime_t()); | |
3892 | ||
3893 | in->filelock.add_waiter(SimpleLock::WAIT_STABLE, cms); | |
3894 | change_max = false; | |
3895 | } | |
3896 | } | |
3897 | } | |
3898 | ||
3899 | if (m->flockbl.length()) { | |
3900 | int32_t num_locks; | |
11fdf7f2 TL |
3901 | auto bli = m->flockbl.cbegin(); |
3902 | decode(num_locks, bli); | |
7c673cae FG |
3903 | for ( int i=0; i < num_locks; ++i) { |
3904 | ceph_filelock decoded_lock; | |
11fdf7f2 | 3905 | decode(decoded_lock, bli); |
7c673cae FG |
3906 | in->get_fcntl_lock_state()->held_locks. |
3907 | insert(pair<uint64_t, ceph_filelock>(decoded_lock.start, decoded_lock)); | |
3908 | ++in->get_fcntl_lock_state()->client_held_lock_counts[(client_t)(decoded_lock.client)]; | |
3909 | } | |
11fdf7f2 | 3910 | decode(num_locks, bli); |
7c673cae FG |
3911 | for ( int i=0; i < num_locks; ++i) { |
3912 | ceph_filelock decoded_lock; | |
11fdf7f2 | 3913 | decode(decoded_lock, bli); |
7c673cae FG |
3914 | in->get_flock_lock_state()->held_locks. |
3915 | insert(pair<uint64_t, ceph_filelock>(decoded_lock.start, decoded_lock)); | |
3916 | ++in->get_flock_lock_state()->client_held_lock_counts[(client_t)(decoded_lock.client)]; | |
3917 | } | |
3918 | } | |
3919 | ||
3920 | if (!dirty && !change_max) | |
3921 | return false; | |
3922 | ||
7c673cae FG |
3923 | // do the update. |
3924 | EUpdate *le = new EUpdate(mds->mdlog, "cap update"); | |
3925 | mds->mdlog->start_entry(le); | |
3926 | ||
94b18763 FG |
3927 | bool xattr = (dirty & CEPH_CAP_XATTR_EXCL) && |
3928 | m->xattrbl.length() && | |
3929 | m->head.xattr_version > in->get_projected_inode()->xattr_version; | |
7c673cae | 3930 | |
7c673cae FG |
3931 | MutationRef mut(new MutationImpl()); |
3932 | mut->ls = mds->mdlog->get_current_segment(); | |
3933 | ||
f67539c2 TL |
3934 | auto pi = in->project_inode(mut, xattr); |
3935 | pi.inode->version = in->pre_dirty(); | |
3936 | ||
3937 | _update_cap_fields(in, dirty, m, pi.inode.get()); | |
7c673cae FG |
3938 | |
3939 | if (change_max) { | |
3940 | dout(7) << " max_size " << old_max << " -> " << new_max | |
3941 | << " for " << *in << dendl; | |
3942 | if (new_max) { | |
f67539c2 | 3943 | auto &cr = pi.inode->client_ranges[client]; |
94b18763 FG |
3944 | cr.range.first = 0; |
3945 | cr.range.last = new_max; | |
3946 | cr.follows = in->first - 1; | |
f91f0fd5 | 3947 | in->mark_clientwriteable(); |
a8e16298 TL |
3948 | if (cap) |
3949 | cap->mark_clientwriteable(); | |
3950 | } else { | |
f67539c2 TL |
3951 | pi.inode->client_ranges.erase(client); |
3952 | if (pi.inode->client_ranges.empty()) | |
f91f0fd5 | 3953 | in->clear_clientwriteable(); |
a8e16298 TL |
3954 | if (cap) |
3955 | cap->clear_clientwriteable(); | |
3956 | } | |
7c673cae FG |
3957 | } |
3958 | ||
3959 | if (change_max || (dirty & (CEPH_CAP_FILE_EXCL|CEPH_CAP_FILE_WR))) | |
3960 | wrlock_force(&in->filelock, mut); // wrlock for duration of journal | |
3961 | ||
3962 | // auth | |
3963 | if (dirty & CEPH_CAP_AUTH_EXCL) | |
3964 | wrlock_force(&in->authlock, mut); | |
3965 | ||
94b18763 FG |
3966 | // xattrs update? |
3967 | if (xattr) { | |
f67539c2 | 3968 | dout(7) << " xattrs v" << pi.inode->xattr_version << " -> " << m->head.xattr_version << dendl; |
f38dd50b | 3969 | decode_new_xattrs(pi.inode.get(), pi.xattrs.get(), m); |
7c673cae FG |
3970 | wrlock_force(&in->xattrlock, mut); |
3971 | } | |
3972 | ||
3973 | mut->auth_pin(in); | |
3974 | mdcache->predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY, 0, follows); | |
3975 | mdcache->journal_dirty_inode(mut.get(), &le->metablob, in, follows); | |
3976 | ||
3977 | // "oldest flush tid" > 0 means client uses unique TID for each flush | |
3978 | if (ack && ack->get_oldest_flush_tid() > 0) | |
3979 | le->metablob.add_client_flush(metareqid_t(m->get_source(), ack->get_client_tid()), | |
3980 | ack->get_oldest_flush_tid()); | |
3981 | ||
11fdf7f2 TL |
3982 | unsigned update_flags = 0; |
3983 | if (change_max) | |
3984 | update_flags |= UPDATE_SHAREMAX; | |
3985 | if (cap) | |
3986 | update_flags |= UPDATE_NEEDSISSUE; | |
3987 | mds->mdlog->submit_entry(le, new C_Locker_FileUpdate_finish(this, in, mut, update_flags, | |
3988 | ack, client)); | |
7c673cae FG |
3989 | if (need_flush && !*need_flush && |
3990 | ((change_max && new_max) || // max INCREASE | |
3991 | _need_flush_mdlog(in, dirty))) | |
3992 | *need_flush = true; | |
3993 | ||
3994 | return true; | |
3995 | } | |
3996 | ||
9f95a23c | 3997 | void Locker::handle_client_cap_release(const cref_t<MClientCapRelease> &m) |
7c673cae FG |
3998 | { |
3999 | client_t client = m->get_source().num(); | |
4000 | dout(10) << "handle_client_cap_release " << *m << dendl; | |
4001 | ||
4002 | if (!mds->is_clientreplay() && !mds->is_active() && !mds->is_stopping()) { | |
4003 | mds->wait_for_replay(new C_MDS_RetryMessage(mds, m)); | |
4004 | return; | |
4005 | } | |
4006 | ||
f67539c2 TL |
4007 | if (mds->logger) mds->logger->inc(l_mdss_handle_client_cap_release); |
4008 | ||
7c673cae FG |
4009 | if (m->osd_epoch_barrier && !mds->objecter->have_map(m->osd_epoch_barrier)) { |
4010 | // Pause RADOS operations until we see the required epoch | |
4011 | mds->objecter->set_epoch_barrier(m->osd_epoch_barrier); | |
4012 | } | |
4013 | ||
4014 | if (mds->get_osd_epoch_barrier() < m->osd_epoch_barrier) { | |
4015 | // Record the barrier so that we will retransmit it to clients | |
4016 | mds->set_osd_epoch_barrier(m->osd_epoch_barrier); | |
4017 | } | |
4018 | ||
94b18763 | 4019 | Session *session = mds->get_session(m); |
7c673cae | 4020 | |
11fdf7f2 TL |
4021 | for (const auto &cap : m->caps) { |
4022 | _do_cap_release(client, inodeno_t((uint64_t)cap.ino) , cap.cap_id, cap.migrate_seq, cap.seq); | |
7c673cae FG |
4023 | } |
4024 | ||
4025 | if (session) { | |
4026 | session->notify_cap_release(m->caps.size()); | |
4027 | } | |
7c673cae FG |
4028 | } |
4029 | ||
4030 | class C_Locker_RetryCapRelease : public LockerContext { | |
4031 | client_t client; | |
4032 | inodeno_t ino; | |
4033 | uint64_t cap_id; | |
4034 | ceph_seq_t migrate_seq; | |
4035 | ceph_seq_t issue_seq; | |
4036 | public: | |
4037 | C_Locker_RetryCapRelease(Locker *l, client_t c, inodeno_t i, uint64_t id, | |
4038 | ceph_seq_t mseq, ceph_seq_t seq) : | |
4039 | LockerContext(l), client(c), ino(i), cap_id(id), migrate_seq(mseq), issue_seq(seq) {} | |
4040 | void finish(int r) override { | |
4041 | locker->_do_cap_release(client, ino, cap_id, migrate_seq, issue_seq); | |
4042 | } | |
4043 | }; | |
4044 | ||
4045 | void Locker::_do_cap_release(client_t client, inodeno_t ino, uint64_t cap_id, | |
4046 | ceph_seq_t mseq, ceph_seq_t seq) | |
4047 | { | |
4048 | CInode *in = mdcache->get_inode(ino); | |
4049 | if (!in) { | |
4050 | dout(7) << "_do_cap_release missing ino " << ino << dendl; | |
4051 | return; | |
4052 | } | |
4053 | Capability *cap = in->get_client_cap(client); | |
4054 | if (!cap) { | |
4055 | dout(7) << "_do_cap_release no cap for client" << client << " on "<< *in << dendl; | |
4056 | return; | |
4057 | } | |
4058 | ||
4059 | dout(7) << "_do_cap_release for client." << client << " on "<< *in << dendl; | |
4060 | if (cap->get_cap_id() != cap_id) { | |
4061 | dout(7) << " capid " << cap_id << " != " << cap->get_cap_id() << ", ignore" << dendl; | |
4062 | return; | |
4063 | } | |
4064 | if (ceph_seq_cmp(mseq, cap->get_mseq()) < 0) { | |
4065 | dout(7) << " mseq " << mseq << " < " << cap->get_mseq() << ", ignore" << dendl; | |
4066 | return; | |
4067 | } | |
4068 | if (should_defer_client_cap_frozen(in)) { | |
4069 | dout(7) << " freezing|frozen, deferring" << dendl; | |
4070 | in->add_waiter(CInode::WAIT_UNFREEZE, | |
4071 | new C_Locker_RetryCapRelease(this, client, ino, cap_id, mseq, seq)); | |
4072 | return; | |
4073 | } | |
4074 | if (seq != cap->get_last_issue()) { | |
4075 | dout(7) << " issue_seq " << seq << " != " << cap->get_last_issue() << dendl; | |
4076 | // clean out any old revoke history | |
4077 | cap->clean_revoke_from(seq); | |
4078 | eval_cap_gather(in); | |
4079 | return; | |
4080 | } | |
a8e16298 | 4081 | remove_client_cap(in, cap); |
7c673cae FG |
4082 | } |
4083 | ||
494da23a | 4084 | void Locker::remove_client_cap(CInode *in, Capability *cap, bool kill) |
7c673cae | 4085 | { |
a8e16298 | 4086 | client_t client = cap->get_client(); |
7c673cae FG |
4087 | // clean out any pending snapflush state |
4088 | if (!in->client_need_snapflush.empty()) | |
4089 | _do_null_snapflush(in, client); | |
4090 | ||
9f95a23c TL |
4091 | while (!cap->lock_caches.empty()) { |
4092 | MDLockCache* lock_cache = cap->lock_caches.front(); | |
4093 | lock_cache->client_cap = nullptr; | |
4094 | invalidate_lock_cache(lock_cache); | |
4095 | } | |
4096 | ||
a8e16298 | 4097 | bool notable = cap->is_notable(); |
7c673cae | 4098 | in->remove_client_cap(client); |
a8e16298 TL |
4099 | if (!notable) |
4100 | return; | |
7c673cae FG |
4101 | |
4102 | if (in->is_auth()) { | |
4103 | // make sure we clear out the client byte range | |
4104 | if (in->get_projected_inode()->client_ranges.count(client) && | |
f67539c2 | 4105 | !(in->get_inode()->nlink == 0 && !in->is_any_caps())) { // unless it's unlink + stray |
494da23a TL |
4106 | if (kill) |
4107 | in->state_set(CInode::STATE_NEEDSRECOVER); | |
4108 | else | |
4109 | check_inode_max_size(in); | |
4110 | } | |
7c673cae FG |
4111 | } else { |
4112 | request_inode_file_caps(in); | |
4113 | } | |
4114 | ||
4115 | try_eval(in, CEPH_CAP_LOCKS); | |
4116 | } | |
4117 | ||
4118 | ||
4119 | /** | |
4120 | * Return true if any currently revoking caps exceed the | |
f64942e4 | 4121 | * session_timeout threshold. |
7c673cae | 4122 | */ |
91327a77 AA |
4123 | bool Locker::any_late_revoking_caps(xlist<Capability*> const &revoking, |
4124 | double timeout) const | |
7c673cae FG |
4125 | { |
4126 | xlist<Capability*>::const_iterator p = revoking.begin(); | |
4127 | if (p.end()) { | |
4128 | // No revoking caps at the moment | |
4129 | return false; | |
4130 | } else { | |
4131 | utime_t now = ceph_clock_now(); | |
4132 | utime_t age = now - (*p)->get_last_revoke_stamp(); | |
91327a77 | 4133 | if (age <= timeout) { |
7c673cae FG |
4134 | return false; |
4135 | } else { | |
4136 | return true; | |
4137 | } | |
4138 | } | |
4139 | } | |
4140 | ||
9f95a23c | 4141 | std::set<client_t> Locker::get_late_revoking_clients(double timeout) const |
7c673cae | 4142 | { |
9f95a23c | 4143 | std::set<client_t> result; |
7c673cae | 4144 | |
9f95a23c TL |
4145 | if (any_late_revoking_caps(revoking_caps, timeout)) { |
4146 | // Slow path: execute in O(N_clients) | |
4147 | for (auto &p : revoking_caps_by_client) { | |
4148 | if (any_late_revoking_caps(p.second, timeout)) { | |
4149 | result.insert(p.first); | |
4150 | } | |
7c673cae | 4151 | } |
9f95a23c TL |
4152 | } else { |
4153 | // Fast path: no misbehaving clients, execute in O(1) | |
7c673cae | 4154 | } |
9f95a23c | 4155 | return result; |
7c673cae FG |
4156 | } |
4157 | ||
4158 | // Hard-code instead of surfacing a config settings because this is | |
4159 | // really a hack that should go away at some point when we have better | |
4160 | // inspection tools for getting at detailed cap state (#7316) | |
4161 | #define MAX_WARN_CAPS 100 | |
4162 | ||
4163 | void Locker::caps_tick() | |
4164 | { | |
4165 | utime_t now = ceph_clock_now(); | |
4166 | ||
11fdf7f2 TL |
4167 | if (!need_snapflush_inodes.empty()) { |
4168 | // snap inodes that needs flush are auth pinned, they affect | |
4169 | // subtree/difrarg freeze. | |
4170 | utime_t cutoff = now; | |
4171 | cutoff -= g_conf()->mds_freeze_tree_timeout / 3; | |
4172 | ||
4173 | CInode *last = need_snapflush_inodes.back(); | |
4174 | while (!need_snapflush_inodes.empty()) { | |
4175 | CInode *in = need_snapflush_inodes.front(); | |
4176 | if (in->last_dirstat_prop >= cutoff) | |
4177 | break; | |
4178 | in->item_caps.remove_myself(); | |
4179 | snapflush_nudge(in); | |
4180 | if (in == last) | |
4181 | break; | |
4182 | } | |
4183 | } | |
4184 | ||
7c673cae FG |
4185 | dout(20) << __func__ << " " << revoking_caps.size() << " revoking caps" << dendl; |
4186 | ||
11fdf7f2 TL |
4187 | now = ceph_clock_now(); |
4188 | int n = 0; | |
7c673cae FG |
4189 | for (xlist<Capability*>::iterator p = revoking_caps.begin(); !p.end(); ++p) { |
4190 | Capability *cap = *p; | |
4191 | ||
4192 | utime_t age = now - cap->get_last_revoke_stamp(); | |
11fdf7f2 | 4193 | dout(20) << __func__ << " age = " << age << " client." << cap->get_client() << "." << cap->get_inode()->ino() << dendl; |
f64942e4 AA |
4194 | if (age <= mds->mdsmap->get_session_timeout()) { |
4195 | dout(20) << __func__ << " age below timeout " << mds->mdsmap->get_session_timeout() << dendl; | |
7c673cae FG |
4196 | break; |
4197 | } else { | |
11fdf7f2 TL |
4198 | ++n; |
4199 | if (n > MAX_WARN_CAPS) { | |
7c673cae FG |
4200 | dout(1) << __func__ << " more than " << MAX_WARN_CAPS << " caps are late" |
4201 | << "revoking, ignoring subsequent caps" << dendl; | |
4202 | break; | |
4203 | } | |
4204 | } | |
4205 | // exponential backoff of warning intervals | |
f64942e4 | 4206 | if (age > mds->mdsmap->get_session_timeout() * (1 << cap->get_num_revoke_warnings())) { |
7c673cae | 4207 | cap->inc_num_revoke_warnings(); |
f67539c2 TL |
4208 | CachedStackStringStream css; |
4209 | *css << "client." << cap->get_client() << " isn't responding to mclientcaps(revoke), ino " | |
4210 | << cap->get_inode()->ino() << " pending " << ccap_string(cap->pending()) | |
4211 | << " issued " << ccap_string(cap->issued()) << ", sent " << age << " seconds ago"; | |
4212 | mds->clog->warn() << css->strv(); | |
4213 | dout(20) << __func__ << " " << css->strv() << dendl; | |
7c673cae | 4214 | } else { |
11fdf7f2 | 4215 | dout(20) << __func__ << " silencing log message (backoff) for " << "client." << cap->get_client() << "." << cap->get_inode()->ino() << dendl; |
7c673cae FG |
4216 | } |
4217 | } | |
4218 | } | |
4219 | ||
4220 | ||
9f95a23c | 4221 | void Locker::handle_client_lease(const cref_t<MClientLease> &m) |
7c673cae FG |
4222 | { |
4223 | dout(10) << "handle_client_lease " << *m << dendl; | |
4224 | ||
11fdf7f2 | 4225 | ceph_assert(m->get_source().is_client()); |
7c673cae FG |
4226 | client_t client = m->get_source().num(); |
4227 | ||
4228 | CInode *in = mdcache->get_inode(m->get_ino(), m->get_last()); | |
4229 | if (!in) { | |
4230 | dout(7) << "handle_client_lease don't have ino " << m->get_ino() << "." << m->get_last() << dendl; | |
7c673cae FG |
4231 | return; |
4232 | } | |
4233 | CDentry *dn = 0; | |
4234 | ||
4235 | frag_t fg = in->pick_dirfrag(m->dname); | |
4236 | CDir *dir = in->get_dirfrag(fg); | |
4237 | if (dir) | |
4238 | dn = dir->lookup(m->dname); | |
4239 | if (!dn) { | |
4240 | dout(7) << "handle_client_lease don't have dn " << m->get_ino() << " " << m->dname << dendl; | |
7c673cae FG |
4241 | return; |
4242 | } | |
4243 | dout(10) << " on " << *dn << dendl; | |
4244 | ||
4245 | // replica and lock | |
4246 | ClientLease *l = dn->get_client_lease(client); | |
4247 | if (!l) { | |
4248 | dout(7) << "handle_client_lease didn't have lease for client." << client << " of " << *dn << dendl; | |
7c673cae FG |
4249 | return; |
4250 | } | |
4251 | ||
4252 | switch (m->get_action()) { | |
4253 | case CEPH_MDS_LEASE_REVOKE_ACK: | |
4254 | case CEPH_MDS_LEASE_RELEASE: | |
4255 | if (l->seq != m->get_seq()) { | |
4256 | dout(7) << "handle_client_lease release - seq " << l->seq << " != provided " << m->get_seq() << dendl; | |
4257 | } else { | |
4258 | dout(7) << "handle_client_lease client." << client | |
4259 | << " on " << *dn << dendl; | |
4260 | dn->remove_client_lease(l, this); | |
4261 | } | |
7c673cae FG |
4262 | break; |
4263 | ||
4264 | case CEPH_MDS_LEASE_RENEW: | |
4265 | { | |
4266 | dout(7) << "handle_client_lease client." << client << " renew on " << *dn | |
4267 | << (!dn->lock.can_lease(client)?", revoking lease":"") << dendl; | |
4268 | if (dn->lock.can_lease(client)) { | |
9f95a23c | 4269 | auto reply = make_message<MClientLease>(*m); |
7c673cae | 4270 | int pool = 1; // fixme.. do something smart! |
11fdf7f2 TL |
4271 | reply->h.duration_ms = (int)(1000 * mdcache->client_lease_durations[pool]); |
4272 | reply->h.seq = ++l->seq; | |
4273 | reply->clear_payload(); | |
7c673cae FG |
4274 | |
4275 | utime_t now = ceph_clock_now(); | |
4276 | now += mdcache->client_lease_durations[pool]; | |
4277 | mdcache->touch_client_lease(l, pool, now); | |
4278 | ||
11fdf7f2 | 4279 | mds->send_message_client_counted(reply, m->get_connection()); |
7c673cae FG |
4280 | } |
4281 | } | |
4282 | break; | |
4283 | ||
4284 | default: | |
4285 | ceph_abort(); // implement me | |
4286 | break; | |
4287 | } | |
4288 | } | |
4289 | ||
4290 | ||
2a845540 TL |
4291 | void Locker::issue_client_lease(CDentry *dn, CInode *in, MDRequestRef &mdr, utime_t now, |
4292 | bufferlist &bl) | |
7c673cae | 4293 | { |
9f95a23c TL |
4294 | client_t client = mdr->get_client(); |
4295 | Session *session = mdr->session; | |
4296 | ||
7c673cae | 4297 | CInode *diri = dn->get_dir()->get_inode(); |
9f95a23c TL |
4298 | if (mdr->snapid == CEPH_NOSNAP && |
4299 | dn->lock.can_lease(client) && | |
4300 | !diri->is_stray() && // do not issue dn leases in stray dir! | |
4301 | !diri->filelock.can_lease(client) && | |
4302 | !(diri->get_client_cap_pending(client) & (CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL))) { | |
2a845540 TL |
4303 | int mask = 0; |
4304 | CDentry::linkage_t *dnl = dn->get_linkage(client, mdr); | |
4305 | if (dnl->is_primary()) { | |
4306 | ceph_assert(dnl->get_inode() == in); | |
4307 | mask = CEPH_LEASE_PRIMARY_LINK; | |
4308 | } else { | |
4309 | if (dnl->is_remote()) | |
4310 | ceph_assert(dnl->get_remote_ino() == in->ino()); | |
4311 | else | |
4312 | ceph_assert(!in); | |
4313 | } | |
7c673cae FG |
4314 | // issue a dentry lease |
4315 | ClientLease *l = dn->add_client_lease(client, session); | |
4316 | session->touch_lease(l); | |
4317 | ||
9f95a23c | 4318 | int pool = 1; // fixme.. do something smart! |
7c673cae FG |
4319 | now += mdcache->client_lease_durations[pool]; |
4320 | mdcache->touch_client_lease(l, pool, now); | |
4321 | ||
11fdf7f2 | 4322 | LeaseStat lstat; |
9f95a23c | 4323 | lstat.mask = CEPH_LEASE_VALID | mask; |
11fdf7f2 TL |
4324 | lstat.duration_ms = (uint32_t)(1000 * mdcache->client_lease_durations[pool]); |
4325 | lstat.seq = ++l->seq; | |
f67539c2 | 4326 | lstat.alternate_name = std::string(dn->alternate_name); |
11fdf7f2 TL |
4327 | encode_lease(bl, session->info, lstat); |
4328 | dout(20) << "issue_client_lease seq " << lstat.seq << " dur " << lstat.duration_ms << "ms " | |
7c673cae FG |
4329 | << " on " << *dn << dendl; |
4330 | } else { | |
4331 | // null lease | |
11fdf7f2 | 4332 | LeaseStat lstat; |
2a845540 | 4333 | lstat.mask = 0; |
f67539c2 | 4334 | lstat.alternate_name = std::string(dn->alternate_name); |
11fdf7f2 | 4335 | encode_lease(bl, session->info, lstat); |
7c673cae FG |
4336 | dout(20) << "issue_client_lease no/null lease on " << *dn << dendl; |
4337 | } | |
4338 | } | |
4339 | ||
4340 | ||
4341 | void Locker::revoke_client_leases(SimpleLock *lock) | |
4342 | { | |
4343 | int n = 0; | |
4344 | CDentry *dn = static_cast<CDentry*>(lock->get_parent()); | |
4345 | for (map<client_t, ClientLease*>::iterator p = dn->client_lease_map.begin(); | |
4346 | p != dn->client_lease_map.end(); | |
4347 | ++p) { | |
4348 | ClientLease *l = p->second; | |
4349 | ||
4350 | n++; | |
11fdf7f2 | 4351 | ceph_assert(lock->get_type() == CEPH_LOCK_DN); |
7c673cae FG |
4352 | |
4353 | CDentry *dn = static_cast<CDentry*>(lock->get_parent()); | |
4354 | int mask = 1 | CEPH_LOCK_DN; // old and new bits | |
4355 | ||
4356 | // i should also revoke the dir ICONTENT lease, if they have it! | |
4357 | CInode *diri = dn->get_dir()->get_inode(); | |
9f95a23c | 4358 | auto lease = make_message<MClientLease>(CEPH_MDS_LEASE_REVOKE, l->seq, mask, diri->ino(), diri->first, CEPH_NOSNAP, dn->get_name()); |
11fdf7f2 | 4359 | mds->send_message_client_counted(lease, l->client); |
7c673cae | 4360 | } |
7c673cae FG |
4361 | } |
4362 | ||
11fdf7f2 TL |
4363 | void Locker::encode_lease(bufferlist& bl, const session_info_t& info, |
4364 | const LeaseStat& ls) | |
4365 | { | |
4366 | if (info.has_feature(CEPHFS_FEATURE_REPLY_ENCODING)) { | |
f67539c2 | 4367 | ENCODE_START(2, 1, bl); |
11fdf7f2 TL |
4368 | encode(ls.mask, bl); |
4369 | encode(ls.duration_ms, bl); | |
4370 | encode(ls.seq, bl); | |
f67539c2 | 4371 | encode(ls.alternate_name, bl); |
11fdf7f2 TL |
4372 | ENCODE_FINISH(bl); |
4373 | } | |
4374 | else { | |
4375 | encode(ls.mask, bl); | |
4376 | encode(ls.duration_ms, bl); | |
4377 | encode(ls.seq, bl); | |
4378 | } | |
4379 | } | |
7c673cae FG |
4380 | |
4381 | // locks ---------------------------------------------------------------- | |
4382 | ||
11fdf7f2 | 4383 | SimpleLock *Locker::get_lock(int lock_type, const MDSCacheObjectInfo &info) |
7c673cae FG |
4384 | { |
4385 | switch (lock_type) { | |
4386 | case CEPH_LOCK_DN: | |
4387 | { | |
4388 | // be careful; info.dirfrag may have incorrect frag; recalculate based on dname. | |
4389 | CInode *diri = mdcache->get_inode(info.dirfrag.ino); | |
4390 | frag_t fg; | |
4391 | CDir *dir = 0; | |
4392 | CDentry *dn = 0; | |
4393 | if (diri) { | |
4394 | fg = diri->pick_dirfrag(info.dname); | |
4395 | dir = diri->get_dirfrag(fg); | |
4396 | if (dir) | |
4397 | dn = dir->lookup(info.dname, info.snapid); | |
4398 | } | |
4399 | if (!dn) { | |
4400 | dout(7) << "get_lock don't have dn " << info.dirfrag.ino << " " << info.dname << dendl; | |
4401 | return 0; | |
4402 | } | |
4403 | return &dn->lock; | |
4404 | } | |
4405 | ||
4406 | case CEPH_LOCK_IAUTH: | |
4407 | case CEPH_LOCK_ILINK: | |
4408 | case CEPH_LOCK_IDFT: | |
4409 | case CEPH_LOCK_IFILE: | |
4410 | case CEPH_LOCK_INEST: | |
4411 | case CEPH_LOCK_IXATTR: | |
4412 | case CEPH_LOCK_ISNAP: | |
4413 | case CEPH_LOCK_IFLOCK: | |
4414 | case CEPH_LOCK_IPOLICY: | |
4415 | { | |
4416 | CInode *in = mdcache->get_inode(info.ino, info.snapid); | |
4417 | if (!in) { | |
4418 | dout(7) << "get_lock don't have ino " << info.ino << dendl; | |
4419 | return 0; | |
4420 | } | |
4421 | switch (lock_type) { | |
4422 | case CEPH_LOCK_IAUTH: return &in->authlock; | |
4423 | case CEPH_LOCK_ILINK: return &in->linklock; | |
4424 | case CEPH_LOCK_IDFT: return &in->dirfragtreelock; | |
4425 | case CEPH_LOCK_IFILE: return &in->filelock; | |
4426 | case CEPH_LOCK_INEST: return &in->nestlock; | |
4427 | case CEPH_LOCK_IXATTR: return &in->xattrlock; | |
4428 | case CEPH_LOCK_ISNAP: return &in->snaplock; | |
4429 | case CEPH_LOCK_IFLOCK: return &in->flocklock; | |
4430 | case CEPH_LOCK_IPOLICY: return &in->policylock; | |
4431 | } | |
4432 | } | |
4433 | ||
4434 | default: | |
4435 | dout(7) << "get_lock don't know lock_type " << lock_type << dendl; | |
4436 | ceph_abort(); | |
4437 | break; | |
4438 | } | |
4439 | ||
4440 | return 0; | |
4441 | } | |
4442 | ||
9f95a23c | 4443 | void Locker::handle_lock(const cref_t<MLock> &m) |
7c673cae FG |
4444 | { |
4445 | // nobody should be talking to us during recovery. | |
11fdf7f2 | 4446 | ceph_assert(mds->is_rejoin() || mds->is_clientreplay() || mds->is_active() || mds->is_stopping()); |
7c673cae FG |
4447 | |
4448 | SimpleLock *lock = get_lock(m->get_lock_type(), m->get_object_info()); | |
4449 | if (!lock) { | |
4450 | dout(10) << "don't have object " << m->get_object_info() << ", must have trimmed, dropping" << dendl; | |
7c673cae FG |
4451 | return; |
4452 | } | |
4453 | ||
4454 | switch (lock->get_type()) { | |
4455 | case CEPH_LOCK_DN: | |
4456 | case CEPH_LOCK_IAUTH: | |
4457 | case CEPH_LOCK_ILINK: | |
4458 | case CEPH_LOCK_ISNAP: | |
4459 | case CEPH_LOCK_IXATTR: | |
4460 | case CEPH_LOCK_IFLOCK: | |
4461 | case CEPH_LOCK_IPOLICY: | |
4462 | handle_simple_lock(lock, m); | |
4463 | break; | |
4464 | ||
4465 | case CEPH_LOCK_IDFT: | |
4466 | case CEPH_LOCK_INEST: | |
4467 | //handle_scatter_lock((ScatterLock*)lock, m); | |
4468 | //break; | |
4469 | ||
4470 | case CEPH_LOCK_IFILE: | |
4471 | handle_file_lock(static_cast<ScatterLock*>(lock), m); | |
4472 | break; | |
4473 | ||
4474 | default: | |
4475 | dout(7) << "handle_lock got otype " << m->get_lock_type() << dendl; | |
4476 | ceph_abort(); | |
4477 | break; | |
4478 | } | |
4479 | } | |
4480 | ||
4481 | ||
4482 | ||
4483 | ||
4484 | ||
4485 | // ========================================================================== | |
4486 | // simple lock | |
4487 | ||
4488 | /** This function may take a reference to m if it needs one, but does | |
4489 | * not put references. */ | |
9f95a23c | 4490 | void Locker::handle_reqrdlock(SimpleLock *lock, const cref_t<MLock> &m) |
7c673cae FG |
4491 | { |
4492 | MDSCacheObject *parent = lock->get_parent(); | |
4493 | if (parent->is_auth() && | |
4494 | lock->get_state() != LOCK_SYNC && | |
4495 | !parent->is_frozen()) { | |
4496 | dout(7) << "handle_reqrdlock got rdlock request on " << *lock | |
4497 | << " on " << *parent << dendl; | |
11fdf7f2 | 4498 | ceph_assert(parent->is_auth()); // replica auth pinned if they're doing this! |
7c673cae FG |
4499 | if (lock->is_stable()) { |
4500 | simple_sync(lock); | |
4501 | } else { | |
4502 | dout(7) << "handle_reqrdlock delaying request until lock is stable" << dendl; | |
4503 | lock->add_waiter(SimpleLock::WAIT_STABLE | MDSCacheObject::WAIT_UNFREEZE, | |
11fdf7f2 | 4504 | new C_MDS_RetryMessage(mds, m)); |
7c673cae FG |
4505 | } |
4506 | } else { | |
4507 | dout(7) << "handle_reqrdlock dropping rdlock request on " << *lock | |
4508 | << " on " << *parent << dendl; | |
4509 | // replica should retry | |
4510 | } | |
4511 | } | |
4512 | ||
9f95a23c | 4513 | void Locker::handle_simple_lock(SimpleLock *lock, const cref_t<MLock> &m) |
7c673cae FG |
4514 | { |
4515 | int from = m->get_asker(); | |
4516 | ||
4517 | dout(10) << "handle_simple_lock " << *m | |
4518 | << " on " << *lock << " " << *lock->get_parent() << dendl; | |
4519 | ||
4520 | if (mds->is_rejoin()) { | |
4521 | if (lock->get_parent()->is_rejoining()) { | |
4522 | dout(7) << "handle_simple_lock still rejoining " << *lock->get_parent() | |
4523 | << ", dropping " << *m << dendl; | |
7c673cae FG |
4524 | return; |
4525 | } | |
4526 | } | |
4527 | ||
4528 | switch (m->get_action()) { | |
4529 | // -- replica -- | |
4530 | case LOCK_AC_SYNC: | |
11fdf7f2 | 4531 | ceph_assert(lock->get_state() == LOCK_LOCK); |
7c673cae FG |
4532 | lock->decode_locked_state(m->get_data()); |
4533 | lock->set_state(LOCK_SYNC); | |
4534 | lock->finish_waiters(SimpleLock::WAIT_RD|SimpleLock::WAIT_STABLE); | |
4535 | break; | |
4536 | ||
4537 | case LOCK_AC_LOCK: | |
11fdf7f2 | 4538 | ceph_assert(lock->get_state() == LOCK_SYNC); |
7c673cae FG |
4539 | lock->set_state(LOCK_SYNC_LOCK); |
4540 | if (lock->is_leased()) | |
4541 | revoke_client_leases(lock); | |
4542 | eval_gather(lock, true); | |
9f95a23c TL |
4543 | if (lock->is_unstable_and_locked()) { |
4544 | if (lock->is_cached()) | |
4545 | invalidate_lock_caches(lock); | |
31f18b77 | 4546 | mds->mdlog->flush(); |
9f95a23c | 4547 | } |
7c673cae FG |
4548 | break; |
4549 | ||
4550 | ||
4551 | // -- auth -- | |
4552 | case LOCK_AC_LOCKACK: | |
11fdf7f2 | 4553 | ceph_assert(lock->get_state() == LOCK_SYNC_LOCK || |
7c673cae | 4554 | lock->get_state() == LOCK_SYNC_EXCL); |
11fdf7f2 | 4555 | ceph_assert(lock->is_gathering(from)); |
7c673cae FG |
4556 | lock->remove_gather(from); |
4557 | ||
4558 | if (lock->is_gathering()) { | |
4559 | dout(7) << "handle_simple_lock " << *lock << " on " << *lock->get_parent() << " from " << from | |
4560 | << ", still gathering " << lock->get_gather_set() << dendl; | |
4561 | } else { | |
4562 | dout(7) << "handle_simple_lock " << *lock << " on " << *lock->get_parent() << " from " << from | |
4563 | << ", last one" << dendl; | |
4564 | eval_gather(lock); | |
4565 | } | |
4566 | break; | |
4567 | ||
4568 | case LOCK_AC_REQRDLOCK: | |
4569 | handle_reqrdlock(lock, m); | |
4570 | break; | |
4571 | ||
4572 | } | |
7c673cae FG |
4573 | } |
4574 | ||
4575 | /* unused, currently. | |
4576 | ||
4577 | class C_Locker_SimpleEval : public Context { | |
4578 | Locker *locker; | |
4579 | SimpleLock *lock; | |
4580 | public: | |
4581 | C_Locker_SimpleEval(Locker *l, SimpleLock *lk) : locker(l), lock(lk) {} | |
4582 | void finish(int r) { | |
4583 | locker->try_simple_eval(lock); | |
4584 | } | |
4585 | }; | |
4586 | ||
4587 | void Locker::try_simple_eval(SimpleLock *lock) | |
4588 | { | |
4589 | // unstable and ambiguous auth? | |
4590 | if (!lock->is_stable() && | |
4591 | lock->get_parent()->is_ambiguous_auth()) { | |
4592 | dout(7) << "simple_eval not stable and ambiguous auth, waiting on " << *lock->get_parent() << dendl; | |
4593 | //if (!lock->get_parent()->is_waiter(MDSCacheObject::WAIT_SINGLEAUTH)) | |
4594 | lock->get_parent()->add_waiter(MDSCacheObject::WAIT_SINGLEAUTH, new C_Locker_SimpleEval(this, lock)); | |
4595 | return; | |
4596 | } | |
4597 | ||
4598 | if (!lock->get_parent()->is_auth()) { | |
4599 | dout(7) << "try_simple_eval not auth for " << *lock->get_parent() << dendl; | |
4600 | return; | |
4601 | } | |
4602 | ||
4603 | if (!lock->get_parent()->can_auth_pin()) { | |
4604 | dout(7) << "try_simple_eval can't auth_pin, waiting on " << *lock->get_parent() << dendl; | |
4605 | //if (!lock->get_parent()->is_waiter(MDSCacheObject::WAIT_SINGLEAUTH)) | |
4606 | lock->get_parent()->add_waiter(MDSCacheObject::WAIT_UNFREEZE, new C_Locker_SimpleEval(this, lock)); | |
4607 | return; | |
4608 | } | |
4609 | ||
4610 | if (lock->is_stable()) | |
4611 | simple_eval(lock); | |
4612 | } | |
4613 | */ | |
4614 | ||
4615 | ||
4616 | void Locker::simple_eval(SimpleLock *lock, bool *need_issue) | |
4617 | { | |
4618 | dout(10) << "simple_eval " << *lock << " on " << *lock->get_parent() << dendl; | |
4619 | ||
11fdf7f2 TL |
4620 | ceph_assert(lock->get_parent()->is_auth()); |
4621 | ceph_assert(lock->is_stable()); | |
7c673cae FG |
4622 | |
4623 | if (lock->get_parent()->is_freezing_or_frozen()) { | |
11fdf7f2 TL |
4624 | // dentry/snap lock in unreadable state can block path traverse |
4625 | if ((lock->get_type() != CEPH_LOCK_DN && | |
9f95a23c TL |
4626 | lock->get_type() != CEPH_LOCK_ISNAP && |
4627 | lock->get_type() != CEPH_LOCK_IPOLICY) || | |
7c673cae | 4628 | lock->get_state() == LOCK_SYNC || |
11fdf7f2 | 4629 | lock->get_parent()->is_frozen()) |
7c673cae FG |
4630 | return; |
4631 | } | |
4632 | ||
4633 | if (mdcache->is_readonly()) { | |
4634 | if (lock->get_state() != LOCK_SYNC) { | |
4635 | dout(10) << "simple_eval read-only FS, syncing " << *lock << " on " << *lock->get_parent() << dendl; | |
4636 | simple_sync(lock, need_issue); | |
4637 | } | |
4638 | return; | |
4639 | } | |
4640 | ||
4641 | CInode *in = 0; | |
4642 | int wanted = 0; | |
11fdf7f2 | 4643 | if (lock->get_cap_shift()) { |
7c673cae FG |
4644 | in = static_cast<CInode*>(lock->get_parent()); |
4645 | in->get_caps_wanted(&wanted, NULL, lock->get_cap_shift()); | |
4646 | } | |
4647 | ||
4648 | // -> excl? | |
4649 | if (lock->get_state() != LOCK_EXCL && | |
4650 | in && in->get_target_loner() >= 0 && | |
4651 | (wanted & CEPH_CAP_GEXCL)) { | |
4652 | dout(7) << "simple_eval stable, going to excl " << *lock | |
4653 | << " on " << *lock->get_parent() << dendl; | |
4654 | simple_excl(lock, need_issue); | |
4655 | } | |
4656 | ||
4657 | // stable -> sync? | |
4658 | else if (lock->get_state() != LOCK_SYNC && | |
4659 | !lock->is_wrlocked() && | |
4660 | ((!(wanted & CEPH_CAP_GEXCL) && !lock->is_waiter_for(SimpleLock::WAIT_WR)) || | |
4661 | (lock->get_state() == LOCK_EXCL && in && in->get_target_loner() < 0))) { | |
4662 | dout(7) << "simple_eval stable, syncing " << *lock | |
4663 | << " on " << *lock->get_parent() << dendl; | |
4664 | simple_sync(lock, need_issue); | |
4665 | } | |
4666 | } | |
4667 | ||
4668 | ||
4669 | // mid | |
4670 | ||
4671 | bool Locker::simple_sync(SimpleLock *lock, bool *need_issue) | |
4672 | { | |
4673 | dout(7) << "simple_sync on " << *lock << " on " << *lock->get_parent() << dendl; | |
11fdf7f2 TL |
4674 | ceph_assert(lock->get_parent()->is_auth()); |
4675 | ceph_assert(lock->is_stable()); | |
7c673cae FG |
4676 | |
4677 | CInode *in = 0; | |
4678 | if (lock->get_cap_shift()) | |
4679 | in = static_cast<CInode *>(lock->get_parent()); | |
4680 | ||
4681 | int old_state = lock->get_state(); | |
4682 | ||
4683 | if (old_state != LOCK_TSYN) { | |
4684 | ||
4685 | switch (lock->get_state()) { | |
4686 | case LOCK_MIX: lock->set_state(LOCK_MIX_SYNC); break; | |
4687 | case LOCK_LOCK: lock->set_state(LOCK_LOCK_SYNC); break; | |
4688 | case LOCK_XSYN: lock->set_state(LOCK_XSYN_SYNC); break; | |
4689 | case LOCK_EXCL: lock->set_state(LOCK_EXCL_SYNC); break; | |
4690 | default: ceph_abort(); | |
4691 | } | |
4692 | ||
4693 | int gather = 0; | |
9f95a23c | 4694 | if (lock->is_wrlocked()) { |
7c673cae | 4695 | gather++; |
9f95a23c TL |
4696 | if (lock->is_cached()) |
4697 | invalidate_lock_caches(lock); | |
b3b6e05e TL |
4698 | |
4699 | // After a client request is early replied the mdlog won't be flushed | |
4700 | // immediately, but before safe replied the request will hold the write | |
4701 | // locks. So if the client sends another request to a different MDS | |
4702 | // daemon, which then needs to request read lock from current MDS daemon, | |
4703 | // then that daemon maybe stuck at most for 5 seconds. Which will lead | |
4704 | // the client stuck at most 5 seconds. | |
4705 | // | |
4706 | // Let's try to flush the mdlog when the write lock is held, which will | |
4707 | // release the write locks after mdlog is successfully flushed. | |
4708 | mds->mdlog->flush(); | |
9f95a23c | 4709 | } |
7c673cae FG |
4710 | |
4711 | if (lock->get_parent()->is_replicated() && old_state == LOCK_MIX) { | |
4712 | send_lock_message(lock, LOCK_AC_SYNC); | |
4713 | lock->init_gather(); | |
4714 | gather++; | |
4715 | } | |
4716 | ||
4717 | if (in && in->is_head()) { | |
4718 | if (in->issued_caps_need_gather(lock)) { | |
4719 | if (need_issue) | |
4720 | *need_issue = true; | |
4721 | else | |
4722 | issue_caps(in); | |
4723 | gather++; | |
4724 | } | |
4725 | } | |
4726 | ||
4727 | bool need_recover = false; | |
4728 | if (lock->get_type() == CEPH_LOCK_IFILE) { | |
11fdf7f2 | 4729 | ceph_assert(in); |
7c673cae FG |
4730 | if (in->state_test(CInode::STATE_NEEDSRECOVER)) { |
4731 | mds->mdcache->queue_file_recover(in); | |
4732 | need_recover = true; | |
4733 | gather++; | |
4734 | } | |
4735 | } | |
4736 | ||
4737 | if (!gather && lock->is_dirty()) { | |
4738 | lock->get_parent()->auth_pin(lock); | |
4739 | scatter_writebehind(static_cast<ScatterLock*>(lock)); | |
7c673cae FG |
4740 | return false; |
4741 | } | |
4742 | ||
4743 | if (gather) { | |
4744 | lock->get_parent()->auth_pin(lock); | |
4745 | if (need_recover) | |
4746 | mds->mdcache->do_file_recover(); | |
4747 | return false; | |
4748 | } | |
4749 | } | |
4750 | ||
4751 | if (lock->get_parent()->is_replicated()) { // FIXME | |
4752 | bufferlist data; | |
4753 | lock->encode_locked_state(data); | |
4754 | send_lock_message(lock, LOCK_AC_SYNC, data); | |
4755 | } | |
4756 | lock->set_state(LOCK_SYNC); | |
4757 | lock->finish_waiters(SimpleLock::WAIT_RD|SimpleLock::WAIT_STABLE); | |
4758 | if (in && in->is_head()) { | |
4759 | if (need_issue) | |
4760 | *need_issue = true; | |
4761 | else | |
4762 | issue_caps(in); | |
4763 | } | |
4764 | return true; | |
4765 | } | |
4766 | ||
4767 | void Locker::simple_excl(SimpleLock *lock, bool *need_issue) | |
4768 | { | |
4769 | dout(7) << "simple_excl on " << *lock << " on " << *lock->get_parent() << dendl; | |
11fdf7f2 TL |
4770 | ceph_assert(lock->get_parent()->is_auth()); |
4771 | ceph_assert(lock->is_stable()); | |
7c673cae FG |
4772 | |
4773 | CInode *in = 0; | |
4774 | if (lock->get_cap_shift()) | |
4775 | in = static_cast<CInode *>(lock->get_parent()); | |
4776 | ||
4777 | switch (lock->get_state()) { | |
4778 | case LOCK_LOCK: lock->set_state(LOCK_LOCK_EXCL); break; | |
4779 | case LOCK_SYNC: lock->set_state(LOCK_SYNC_EXCL); break; | |
4780 | case LOCK_XSYN: lock->set_state(LOCK_XSYN_EXCL); break; | |
4781 | default: ceph_abort(); | |
4782 | } | |
4783 | ||
4784 | int gather = 0; | |
4785 | if (lock->is_rdlocked()) | |
4786 | gather++; | |
4787 | if (lock->is_wrlocked()) | |
4788 | gather++; | |
9f95a23c TL |
4789 | if (gather && lock->is_cached()) |
4790 | invalidate_lock_caches(lock); | |
7c673cae FG |
4791 | |
4792 | if (lock->get_parent()->is_replicated() && | |
4793 | lock->get_state() != LOCK_LOCK_EXCL && | |
4794 | lock->get_state() != LOCK_XSYN_EXCL) { | |
4795 | send_lock_message(lock, LOCK_AC_LOCK); | |
4796 | lock->init_gather(); | |
4797 | gather++; | |
4798 | } | |
4799 | ||
4800 | if (in && in->is_head()) { | |
4801 | if (in->issued_caps_need_gather(lock)) { | |
4802 | if (need_issue) | |
4803 | *need_issue = true; | |
4804 | else | |
4805 | issue_caps(in); | |
4806 | gather++; | |
4807 | } | |
4808 | } | |
4809 | ||
4810 | if (gather) { | |
4811 | lock->get_parent()->auth_pin(lock); | |
4812 | } else { | |
4813 | lock->set_state(LOCK_EXCL); | |
4814 | lock->finish_waiters(SimpleLock::WAIT_WR|SimpleLock::WAIT_STABLE); | |
4815 | if (in) { | |
4816 | if (need_issue) | |
4817 | *need_issue = true; | |
4818 | else | |
4819 | issue_caps(in); | |
4820 | } | |
4821 | } | |
4822 | } | |
4823 | ||
4824 | void Locker::simple_lock(SimpleLock *lock, bool *need_issue) | |
4825 | { | |
4826 | dout(7) << "simple_lock on " << *lock << " on " << *lock->get_parent() << dendl; | |
11fdf7f2 TL |
4827 | ceph_assert(lock->get_parent()->is_auth()); |
4828 | ceph_assert(lock->is_stable()); | |
4829 | ceph_assert(lock->get_state() != LOCK_LOCK); | |
7c673cae FG |
4830 | |
4831 | CInode *in = 0; | |
4832 | if (lock->get_cap_shift()) | |
4833 | in = static_cast<CInode *>(lock->get_parent()); | |
4834 | ||
4835 | int old_state = lock->get_state(); | |
4836 | ||
4837 | switch (lock->get_state()) { | |
4838 | case LOCK_SYNC: lock->set_state(LOCK_SYNC_LOCK); break; | |
b32b8144 | 4839 | case LOCK_XSYN: lock->set_state(LOCK_XSYN_LOCK); break; |
7c673cae FG |
4840 | case LOCK_EXCL: lock->set_state(LOCK_EXCL_LOCK); break; |
4841 | case LOCK_MIX: lock->set_state(LOCK_MIX_LOCK); | |
4842 | (static_cast<ScatterLock *>(lock))->clear_unscatter_wanted(); | |
4843 | break; | |
4844 | case LOCK_TSYN: lock->set_state(LOCK_TSYN_LOCK); break; | |
4845 | default: ceph_abort(); | |
4846 | } | |
4847 | ||
4848 | int gather = 0; | |
4849 | if (lock->is_leased()) { | |
4850 | gather++; | |
4851 | revoke_client_leases(lock); | |
4852 | } | |
9f95a23c TL |
4853 | if (lock->is_rdlocked()) { |
4854 | if (lock->is_cached()) | |
4855 | invalidate_lock_caches(lock); | |
7c673cae | 4856 | gather++; |
9f95a23c | 4857 | } |
7c673cae FG |
4858 | if (in && in->is_head()) { |
4859 | if (in->issued_caps_need_gather(lock)) { | |
4860 | if (need_issue) | |
4861 | *need_issue = true; | |
4862 | else | |
4863 | issue_caps(in); | |
4864 | gather++; | |
4865 | } | |
4866 | } | |
4867 | ||
4868 | bool need_recover = false; | |
4869 | if (lock->get_type() == CEPH_LOCK_IFILE) { | |
11fdf7f2 | 4870 | ceph_assert(in); |
7c673cae FG |
4871 | if(in->state_test(CInode::STATE_NEEDSRECOVER)) { |
4872 | mds->mdcache->queue_file_recover(in); | |
4873 | need_recover = true; | |
4874 | gather++; | |
4875 | } | |
4876 | } | |
4877 | ||
4878 | if (lock->get_parent()->is_replicated() && | |
4879 | lock->get_state() == LOCK_MIX_LOCK && | |
4880 | gather) { | |
4881 | dout(10) << " doing local stage of mix->lock gather before gathering from replicas" << dendl; | |
4882 | } else { | |
4883 | // move to second stage of gather now, so we don't send the lock action later. | |
4884 | if (lock->get_state() == LOCK_MIX_LOCK) | |
4885 | lock->set_state(LOCK_MIX_LOCK2); | |
4886 | ||
4887 | if (lock->get_parent()->is_replicated() && | |
4888 | lock->get_sm()->states[old_state].replica_state != LOCK_LOCK) { // replica may already be LOCK | |
4889 | gather++; | |
4890 | send_lock_message(lock, LOCK_AC_LOCK); | |
4891 | lock->init_gather(); | |
4892 | } | |
4893 | } | |
4894 | ||
4895 | if (!gather && lock->is_dirty()) { | |
4896 | lock->get_parent()->auth_pin(lock); | |
4897 | scatter_writebehind(static_cast<ScatterLock*>(lock)); | |
7c673cae FG |
4898 | return; |
4899 | } | |
4900 | ||
4901 | if (gather) { | |
4902 | lock->get_parent()->auth_pin(lock); | |
4903 | if (need_recover) | |
4904 | mds->mdcache->do_file_recover(); | |
4905 | } else { | |
4906 | lock->set_state(LOCK_LOCK); | |
4907 | lock->finish_waiters(ScatterLock::WAIT_XLOCK|ScatterLock::WAIT_WR|ScatterLock::WAIT_STABLE); | |
4908 | } | |
4909 | } | |
4910 | ||
4911 | ||
4912 | void Locker::simple_xlock(SimpleLock *lock) | |
4913 | { | |
4914 | dout(7) << "simple_xlock on " << *lock << " on " << *lock->get_parent() << dendl; | |
11fdf7f2 | 4915 | ceph_assert(lock->get_parent()->is_auth()); |
7c673cae | 4916 | //assert(lock->is_stable()); |
11fdf7f2 | 4917 | ceph_assert(lock->get_state() != LOCK_XLOCK); |
7c673cae FG |
4918 | |
4919 | CInode *in = 0; | |
4920 | if (lock->get_cap_shift()) | |
4921 | in = static_cast<CInode *>(lock->get_parent()); | |
4922 | ||
4923 | if (lock->is_stable()) | |
4924 | lock->get_parent()->auth_pin(lock); | |
4925 | ||
4926 | switch (lock->get_state()) { | |
4927 | case LOCK_LOCK: | |
4928 | case LOCK_XLOCKDONE: lock->set_state(LOCK_LOCK_XLOCK); break; | |
4929 | default: ceph_abort(); | |
4930 | } | |
4931 | ||
4932 | int gather = 0; | |
4933 | if (lock->is_rdlocked()) | |
4934 | gather++; | |
4935 | if (lock->is_wrlocked()) | |
4936 | gather++; | |
9f95a23c TL |
4937 | if (gather && lock->is_cached()) |
4938 | invalidate_lock_caches(lock); | |
7c673cae FG |
4939 | |
4940 | if (in && in->is_head()) { | |
4941 | if (in->issued_caps_need_gather(lock)) { | |
4942 | issue_caps(in); | |
4943 | gather++; | |
4944 | } | |
4945 | } | |
4946 | ||
4947 | if (!gather) { | |
4948 | lock->set_state(LOCK_PREXLOCK); | |
4949 | //assert("shouldn't be called if we are already xlockable" == 0); | |
4950 | } | |
4951 | } | |
4952 | ||
4953 | ||
4954 | ||
4955 | ||
4956 | ||
4957 | // ========================================================================== | |
4958 | // scatter lock | |
4959 | ||
4960 | /* | |
4961 | ||
4962 | Some notes on scatterlocks. | |
4963 | ||
4964 | - The scatter/gather is driven by the inode lock. The scatter always | |
4965 | brings in the latest metadata from the fragments. | |
4966 | ||
4967 | - When in a scattered/MIX state, fragments are only allowed to | |
4968 | update/be written to if the accounted stat matches the inode's | |
4969 | current version. | |
4970 | ||
4971 | - That means, on gather, we _only_ assimilate diffs for frag metadata | |
4972 | that match the current version, because those are the only ones | |
4973 | written during this scatter/gather cycle. (Others didn't permit | |
4974 | it.) We increment the version and journal this to disk. | |
4975 | ||
4976 | - When possible, we also simultaneously update our local frag | |
4977 | accounted stats to match. | |
4978 | ||
4979 | - On scatter, the new inode info is broadcast to frags, both local | |
4980 | and remote. If possible (auth and !frozen), the dirfrag auth | |
4981 | should update the accounted state (if it isn't already up to date). | |
4982 | Note that this may occur on both the local inode auth node and | |
4983 | inode replicas, so there are two potential paths. If it is NOT | |
4984 | possible, they need to mark_stale to prevent any possible writes. | |
4985 | ||
4986 | - A scatter can be to MIX (potentially writeable) or to SYNC (read | |
4987 | only). Both are opportunities to update the frag accounted stats, | |
4988 | even though only the MIX case is affected by a stale dirfrag. | |
4989 | ||
4990 | - Because many scatter/gather cycles can potentially go by without a | |
4991 | frag being able to update its accounted stats (due to being frozen | |
4992 | by exports/refragments in progress), the frag may have (even very) | |
4993 | old stat versions. That's fine. If when we do want to update it, | |
4994 | we can update accounted_* and the version first. | |
4995 | ||
4996 | */ | |
4997 | ||
4998 | class C_Locker_ScatterWB : public LockerLogContext { | |
4999 | ScatterLock *lock; | |
5000 | MutationRef mut; | |
5001 | public: | |
5002 | C_Locker_ScatterWB(Locker *l, ScatterLock *sl, MutationRef& m) : | |
5003 | LockerLogContext(l), lock(sl), mut(m) {} | |
5004 | void finish(int r) override { | |
5005 | locker->scatter_writebehind_finish(lock, mut); | |
5006 | } | |
5007 | }; | |
5008 | ||
5009 | void Locker::scatter_writebehind(ScatterLock *lock) | |
5010 | { | |
5011 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
f67539c2 | 5012 | dout(10) << "scatter_writebehind " << in->get_inode()->mtime << " on " << *lock << " on " << *in << dendl; |
7c673cae FG |
5013 | |
5014 | // journal | |
5015 | MutationRef mut(new MutationImpl()); | |
5016 | mut->ls = mds->mdlog->get_current_segment(); | |
5017 | ||
5018 | // forcefully take a wrlock | |
5019 | lock->get_wrlock(true); | |
9f95a23c | 5020 | mut->emplace_lock(lock, MutationImpl::LockOp::WRLOCK); |
7c673cae FG |
5021 | |
5022 | in->pre_cow_old_inode(); // avoid cow mayhem | |
5023 | ||
f67539c2 TL |
5024 | auto pi = in->project_inode(mut); |
5025 | pi.inode->version = in->pre_dirty(); | |
7c673cae | 5026 | |
f67539c2 | 5027 | in->finish_scatter_gather_update(lock->get_type(), mut); |
7c673cae FG |
5028 | lock->start_flush(); |
5029 | ||
5030 | EUpdate *le = new EUpdate(mds->mdlog, "scatter_writebehind"); | |
5031 | mds->mdlog->start_entry(le); | |
5032 | ||
5033 | mdcache->predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY); | |
5034 | mdcache->journal_dirty_inode(mut.get(), &le->metablob, in); | |
5035 | ||
f67539c2 | 5036 | in->finish_scatter_gather_update_accounted(lock->get_type(), &le->metablob); |
7c673cae FG |
5037 | |
5038 | mds->mdlog->submit_entry(le, new C_Locker_ScatterWB(this, lock, mut)); | |
2a845540 | 5039 | mds->mdlog->flush(); |
7c673cae FG |
5040 | } |
5041 | ||
5042 | void Locker::scatter_writebehind_finish(ScatterLock *lock, MutationRef& mut) | |
5043 | { | |
5044 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
5045 | dout(10) << "scatter_writebehind_finish on " << *lock << " on " << *in << dendl; | |
f67539c2 TL |
5046 | |
5047 | mut->apply(); | |
7c673cae FG |
5048 | |
5049 | lock->finish_flush(); | |
5050 | ||
5051 | // if replicas may have flushed in a mix->lock state, send another | |
5052 | // message so they can finish_flush(). | |
5053 | if (in->is_replicated()) { | |
5054 | switch (lock->get_state()) { | |
5055 | case LOCK_MIX_LOCK: | |
5056 | case LOCK_MIX_LOCK2: | |
5057 | case LOCK_MIX_EXCL: | |
5058 | case LOCK_MIX_TSYN: | |
5059 | send_lock_message(lock, LOCK_AC_LOCKFLUSHED); | |
5060 | } | |
5061 | } | |
5062 | ||
7c673cae FG |
5063 | drop_locks(mut.get()); |
5064 | mut->cleanup(); | |
5065 | ||
5066 | if (lock->is_stable()) | |
5067 | lock->finish_waiters(ScatterLock::WAIT_STABLE); | |
5068 | ||
5069 | //scatter_eval_gather(lock); | |
5070 | } | |
5071 | ||
5072 | void Locker::scatter_eval(ScatterLock *lock, bool *need_issue) | |
5073 | { | |
5074 | dout(10) << "scatter_eval " << *lock << " on " << *lock->get_parent() << dendl; | |
5075 | ||
11fdf7f2 TL |
5076 | ceph_assert(lock->get_parent()->is_auth()); |
5077 | ceph_assert(lock->is_stable()); | |
7c673cae FG |
5078 | |
5079 | if (lock->get_parent()->is_freezing_or_frozen()) { | |
5080 | dout(20) << " freezing|frozen" << dendl; | |
5081 | return; | |
5082 | } | |
5083 | ||
5084 | if (mdcache->is_readonly()) { | |
5085 | if (lock->get_state() != LOCK_SYNC) { | |
5086 | dout(10) << "scatter_eval read-only FS, syncing " << *lock << " on " << *lock->get_parent() << dendl; | |
5087 | simple_sync(lock, need_issue); | |
5088 | } | |
5089 | return; | |
5090 | } | |
5091 | ||
5092 | if (!lock->is_rdlocked() && | |
5093 | lock->get_state() != LOCK_MIX && | |
5094 | lock->get_scatter_wanted()) { | |
5095 | dout(10) << "scatter_eval scatter_wanted, bump to mix " << *lock | |
5096 | << " on " << *lock->get_parent() << dendl; | |
5097 | scatter_mix(lock, need_issue); | |
5098 | return; | |
5099 | } | |
5100 | ||
5101 | if (lock->get_type() == CEPH_LOCK_INEST) { | |
5102 | // in general, we want to keep INEST writable at all times. | |
5103 | if (!lock->is_rdlocked()) { | |
5104 | if (lock->get_parent()->is_replicated()) { | |
5105 | if (lock->get_state() != LOCK_MIX) | |
5106 | scatter_mix(lock, need_issue); | |
5107 | } else { | |
5108 | if (lock->get_state() != LOCK_LOCK) | |
5109 | simple_lock(lock, need_issue); | |
5110 | } | |
5111 | } | |
5112 | return; | |
5113 | } | |
5114 | ||
5115 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
5116 | if (!in->has_subtree_or_exporting_dirfrag() || in->is_base()) { | |
5117 | // i _should_ be sync. | |
5118 | if (!lock->is_wrlocked() && | |
5119 | lock->get_state() != LOCK_SYNC) { | |
5120 | dout(10) << "scatter_eval no wrlocks|xlocks, not subtree root inode, syncing" << dendl; | |
5121 | simple_sync(lock, need_issue); | |
5122 | } | |
5123 | } | |
5124 | } | |
5125 | ||
5126 | ||
5127 | /* | |
5128 | * mark a scatterlock to indicate that the dir fnode has some dirty data | |
5129 | */ | |
5130 | void Locker::mark_updated_scatterlock(ScatterLock *lock) | |
5131 | { | |
5132 | lock->mark_dirty(); | |
5133 | if (lock->get_updated_item()->is_on_list()) { | |
5134 | dout(10) << "mark_updated_scatterlock " << *lock | |
5135 | << " - already on list since " << lock->get_update_stamp() << dendl; | |
5136 | } else { | |
5137 | updated_scatterlocks.push_back(lock->get_updated_item()); | |
5138 | utime_t now = ceph_clock_now(); | |
5139 | lock->set_update_stamp(now); | |
5140 | dout(10) << "mark_updated_scatterlock " << *lock | |
5141 | << " - added at " << now << dendl; | |
5142 | } | |
5143 | } | |
5144 | ||
5145 | /* | |
5146 | * this is called by scatter_tick and LogSegment::try_to_trim() when | |
5147 | * trying to flush dirty scattered data (i.e. updated fnode) back to | |
5148 | * the inode. | |
5149 | * | |
5150 | * we need to lock|scatter in order to push fnode changes into the | |
5151 | * inode.dirstat. | |
5152 | */ | |
11fdf7f2 | 5153 | void Locker::scatter_nudge(ScatterLock *lock, MDSContext *c, bool forcelockchange) |
7c673cae FG |
5154 | { |
5155 | CInode *p = static_cast<CInode *>(lock->get_parent()); | |
5156 | ||
5157 | if (p->is_frozen() || p->is_freezing()) { | |
5158 | dout(10) << "scatter_nudge waiting for unfreeze on " << *p << dendl; | |
5159 | if (c) | |
5160 | p->add_waiter(MDSCacheObject::WAIT_UNFREEZE, c); | |
b32b8144 | 5161 | else if (lock->is_dirty()) |
7c673cae FG |
5162 | // just requeue. not ideal.. starvation prone.. |
5163 | updated_scatterlocks.push_back(lock->get_updated_item()); | |
5164 | return; | |
5165 | } | |
5166 | ||
5167 | if (p->is_ambiguous_auth()) { | |
5168 | dout(10) << "scatter_nudge waiting for single auth on " << *p << dendl; | |
5169 | if (c) | |
5170 | p->add_waiter(MDSCacheObject::WAIT_SINGLEAUTH, c); | |
b32b8144 | 5171 | else if (lock->is_dirty()) |
7c673cae FG |
5172 | // just requeue. not ideal.. starvation prone.. |
5173 | updated_scatterlocks.push_back(lock->get_updated_item()); | |
5174 | return; | |
5175 | } | |
5176 | ||
5177 | if (p->is_auth()) { | |
5178 | int count = 0; | |
5179 | while (true) { | |
5180 | if (lock->is_stable()) { | |
5181 | // can we do it now? | |
5182 | // (only if we're not replicated.. if we are, we really do need | |
5183 | // to nudge the lock state!) | |
5184 | /* | |
5185 | actually, even if we're not replicated, we can't stay in MIX, because another mds | |
5186 | could discover and replicate us at any time. if that happens while we're flushing, | |
5187 | they end up in MIX but their inode has the old scatterstat version. | |
5188 | ||
5189 | if (!forcelockchange && !lock->get_parent()->is_replicated() && lock->can_wrlock(-1)) { | |
5190 | dout(10) << "scatter_nudge auth, propagating " << *lock << " on " << *p << dendl; | |
5191 | scatter_writebehind(lock); | |
5192 | if (c) | |
5193 | lock->add_waiter(SimpleLock::WAIT_STABLE, c); | |
5194 | return; | |
5195 | } | |
5196 | */ | |
5197 | ||
5198 | if (mdcache->is_readonly()) { | |
5199 | if (lock->get_state() != LOCK_SYNC) { | |
5200 | dout(10) << "scatter_nudge auth, read-only FS, syncing " << *lock << " on " << *p << dendl; | |
5201 | simple_sync(static_cast<ScatterLock*>(lock)); | |
5202 | } | |
5203 | break; | |
5204 | } | |
5205 | ||
5206 | // adjust lock state | |
5207 | dout(10) << "scatter_nudge auth, scatter/unscattering " << *lock << " on " << *p << dendl; | |
5208 | switch (lock->get_type()) { | |
5209 | case CEPH_LOCK_IFILE: | |
5210 | if (p->is_replicated() && lock->get_state() != LOCK_MIX) | |
5211 | scatter_mix(static_cast<ScatterLock*>(lock)); | |
5212 | else if (lock->get_state() != LOCK_LOCK) | |
5213 | simple_lock(static_cast<ScatterLock*>(lock)); | |
5214 | else | |
5215 | simple_sync(static_cast<ScatterLock*>(lock)); | |
5216 | break; | |
5217 | ||
5218 | case CEPH_LOCK_IDFT: | |
5219 | case CEPH_LOCK_INEST: | |
5220 | if (p->is_replicated() && lock->get_state() != LOCK_MIX) | |
5221 | scatter_mix(lock); | |
5222 | else if (lock->get_state() != LOCK_LOCK) | |
5223 | simple_lock(lock); | |
5224 | else | |
5225 | simple_sync(lock); | |
5226 | break; | |
5227 | default: | |
5228 | ceph_abort(); | |
5229 | } | |
5230 | ++count; | |
5231 | if (lock->is_stable() && count == 2) { | |
5232 | dout(10) << "scatter_nudge oh, stable after two cycles." << dendl; | |
5233 | // this should only realy happen when called via | |
5234 | // handle_file_lock due to AC_NUDGE, because the rest of the | |
5235 | // time we are replicated or have dirty data and won't get | |
5236 | // called. bailing here avoids an infinite loop. | |
11fdf7f2 | 5237 | ceph_assert(!c); |
7c673cae FG |
5238 | break; |
5239 | } | |
5240 | } else { | |
5241 | dout(10) << "scatter_nudge auth, waiting for stable " << *lock << " on " << *p << dendl; | |
5242 | if (c) | |
5243 | lock->add_waiter(SimpleLock::WAIT_STABLE, c); | |
5244 | return; | |
5245 | } | |
5246 | } | |
5247 | } else { | |
5248 | dout(10) << "scatter_nudge replica, requesting scatter/unscatter of " | |
5249 | << *lock << " on " << *p << dendl; | |
5250 | // request unscatter? | |
5251 | mds_rank_t auth = lock->get_parent()->authority().first; | |
11fdf7f2 | 5252 | if (!mds->is_cluster_degraded() || mds->mdsmap->is_clientreplay_or_active_or_stopping(auth)) { |
9f95a23c | 5253 | mds->send_message_mds(make_message<MLock>(lock, LOCK_AC_NUDGE, mds->get_nodeid()), auth); |
11fdf7f2 | 5254 | } |
7c673cae FG |
5255 | |
5256 | // wait... | |
5257 | if (c) | |
5258 | lock->add_waiter(SimpleLock::WAIT_STABLE, c); | |
5259 | ||
5260 | // also, requeue, in case we had wrong auth or something | |
b32b8144 FG |
5261 | if (lock->is_dirty()) |
5262 | updated_scatterlocks.push_back(lock->get_updated_item()); | |
7c673cae FG |
5263 | } |
5264 | } | |
5265 | ||
5266 | void Locker::scatter_tick() | |
5267 | { | |
5268 | dout(10) << "scatter_tick" << dendl; | |
5269 | ||
5270 | // updated | |
5271 | utime_t now = ceph_clock_now(); | |
5272 | int n = updated_scatterlocks.size(); | |
5273 | while (!updated_scatterlocks.empty()) { | |
5274 | ScatterLock *lock = updated_scatterlocks.front(); | |
5275 | ||
5276 | if (n-- == 0) break; // scatter_nudge() may requeue; avoid looping | |
5277 | ||
5278 | if (!lock->is_dirty()) { | |
5279 | updated_scatterlocks.pop_front(); | |
5280 | dout(10) << " removing from updated_scatterlocks " | |
5281 | << *lock << " " << *lock->get_parent() << dendl; | |
5282 | continue; | |
5283 | } | |
11fdf7f2 | 5284 | if (now - lock->get_update_stamp() < g_conf()->mds_scatter_nudge_interval) |
7c673cae FG |
5285 | break; |
5286 | updated_scatterlocks.pop_front(); | |
5287 | scatter_nudge(lock, 0); | |
5288 | } | |
5289 | mds->mdlog->flush(); | |
5290 | } | |
5291 | ||
5292 | ||
5293 | void Locker::scatter_tempsync(ScatterLock *lock, bool *need_issue) | |
5294 | { | |
5295 | dout(10) << "scatter_tempsync " << *lock | |
5296 | << " on " << *lock->get_parent() << dendl; | |
11fdf7f2 TL |
5297 | ceph_assert(lock->get_parent()->is_auth()); |
5298 | ceph_assert(lock->is_stable()); | |
7c673cae | 5299 | |
11fdf7f2 | 5300 | ceph_abort_msg("not fully implemented, at least not for filelock"); |
7c673cae FG |
5301 | |
5302 | CInode *in = static_cast<CInode *>(lock->get_parent()); | |
5303 | ||
5304 | switch (lock->get_state()) { | |
5305 | case LOCK_SYNC: ceph_abort(); // this shouldn't happen | |
5306 | case LOCK_LOCK: lock->set_state(LOCK_LOCK_TSYN); break; | |
5307 | case LOCK_MIX: lock->set_state(LOCK_MIX_TSYN); break; | |
5308 | default: ceph_abort(); | |
5309 | } | |
5310 | ||
5311 | int gather = 0; | |
9f95a23c TL |
5312 | if (lock->is_wrlocked()) { |
5313 | if (lock->is_cached()) | |
5314 | invalidate_lock_caches(lock); | |
7c673cae | 5315 | gather++; |
9f95a23c | 5316 | } |
7c673cae FG |
5317 | |
5318 | if (lock->get_cap_shift() && | |
5319 | in->is_head() && | |
5320 | in->issued_caps_need_gather(lock)) { | |
5321 | if (need_issue) | |
5322 | *need_issue = true; | |
5323 | else | |
5324 | issue_caps(in); | |
5325 | gather++; | |
5326 | } | |
5327 | ||
5328 | if (lock->get_state() == LOCK_MIX_TSYN && | |
5329 | in->is_replicated()) { | |
5330 | lock->init_gather(); | |
5331 | send_lock_message(lock, LOCK_AC_LOCK); | |
5332 | gather++; | |
5333 | } | |
5334 | ||
5335 | if (gather) { | |
5336 | in->auth_pin(lock); | |
5337 | } else { | |
5338 | // do tempsync | |
5339 | lock->set_state(LOCK_TSYN); | |
5340 | lock->finish_waiters(ScatterLock::WAIT_RD|ScatterLock::WAIT_STABLE); | |
5341 | if (lock->get_cap_shift()) { | |
5342 | if (need_issue) | |
5343 | *need_issue = true; | |
5344 | else | |
5345 | issue_caps(in); | |
5346 | } | |
5347 | } | |
5348 | } | |
5349 | ||
5350 | ||
5351 | ||
5352 | // ========================================================================== | |
5353 | // local lock | |
5354 | ||
f67539c2 | 5355 | void Locker::local_wrlock_grab(LocalLockC *lock, MutationRef& mut) |
7c673cae FG |
5356 | { |
5357 | dout(7) << "local_wrlock_grab on " << *lock | |
5358 | << " on " << *lock->get_parent() << dendl; | |
5359 | ||
11fdf7f2 TL |
5360 | ceph_assert(lock->get_parent()->is_auth()); |
5361 | ceph_assert(lock->can_wrlock()); | |
7c673cae | 5362 | lock->get_wrlock(mut->get_client()); |
11fdf7f2 | 5363 | |
9f95a23c TL |
5364 | auto it = mut->emplace_lock(lock, MutationImpl::LockOp::WRLOCK); |
5365 | ceph_assert(it->is_wrlock()); | |
7c673cae FG |
5366 | } |
5367 | ||
f67539c2 | 5368 | bool Locker::local_wrlock_start(LocalLockC *lock, MDRequestRef& mut) |
7c673cae FG |
5369 | { |
5370 | dout(7) << "local_wrlock_start on " << *lock | |
5371 | << " on " << *lock->get_parent() << dendl; | |
5372 | ||
11fdf7f2 | 5373 | ceph_assert(lock->get_parent()->is_auth()); |
7c673cae | 5374 | if (lock->can_wrlock()) { |
7c673cae | 5375 | lock->get_wrlock(mut->get_client()); |
9f95a23c | 5376 | auto it = mut->emplace_lock(lock, MutationImpl::LockOp::WRLOCK); |
11fdf7f2 | 5377 | ceph_assert(it->is_wrlock()); |
7c673cae FG |
5378 | return true; |
5379 | } else { | |
5380 | lock->add_waiter(SimpleLock::WAIT_WR|SimpleLock::WAIT_STABLE, new C_MDS_RetryRequest(mdcache, mut)); | |
5381 | return false; | |
5382 | } | |
5383 | } | |
5384 | ||
11fdf7f2 | 5385 | void Locker::local_wrlock_finish(const MutationImpl::lock_iterator& it, MutationImpl *mut) |
7c673cae | 5386 | { |
11fdf7f2 | 5387 | ceph_assert(it->is_wrlock()); |
f67539c2 | 5388 | LocalLockC *lock = static_cast<LocalLockC*>(it->lock); |
7c673cae FG |
5389 | dout(7) << "local_wrlock_finish on " << *lock |
5390 | << " on " << *lock->get_parent() << dendl; | |
5391 | lock->put_wrlock(); | |
11fdf7f2 | 5392 | mut->locks.erase(it); |
7c673cae FG |
5393 | if (lock->get_num_wrlocks() == 0) { |
5394 | lock->finish_waiters(SimpleLock::WAIT_STABLE | | |
5395 | SimpleLock::WAIT_WR | | |
5396 | SimpleLock::WAIT_RD); | |
5397 | } | |
5398 | } | |
5399 | ||
f67539c2 | 5400 | bool Locker::local_xlock_start(LocalLockC *lock, MDRequestRef& mut) |
7c673cae FG |
5401 | { |
5402 | dout(7) << "local_xlock_start on " << *lock | |
5403 | << " on " << *lock->get_parent() << dendl; | |
5404 | ||
11fdf7f2 | 5405 | ceph_assert(lock->get_parent()->is_auth()); |
7c673cae FG |
5406 | if (!lock->can_xlock_local()) { |
5407 | lock->add_waiter(SimpleLock::WAIT_WR|SimpleLock::WAIT_STABLE, new C_MDS_RetryRequest(mdcache, mut)); | |
5408 | return false; | |
5409 | } | |
5410 | ||
5411 | lock->get_xlock(mut, mut->get_client()); | |
9f95a23c | 5412 | mut->emplace_lock(lock, MutationImpl::LockOp::XLOCK); |
7c673cae FG |
5413 | return true; |
5414 | } | |
5415 | ||
11fdf7f2 | 5416 | void Locker::local_xlock_finish(const MutationImpl::lock_iterator& it, MutationImpl *mut) |
7c673cae | 5417 | { |
11fdf7f2 | 5418 | ceph_assert(it->is_xlock()); |
f67539c2 | 5419 | LocalLockC *lock = static_cast<LocalLockC*>(it->lock); |
7c673cae FG |
5420 | dout(7) << "local_xlock_finish on " << *lock |
5421 | << " on " << *lock->get_parent() << dendl; | |
5422 | lock->put_xlock(); | |
11fdf7f2 | 5423 | mut->locks.erase(it); |
7c673cae FG |
5424 | |
5425 | lock->finish_waiters(SimpleLock::WAIT_STABLE | | |
5426 | SimpleLock::WAIT_WR | | |
5427 | SimpleLock::WAIT_RD); | |
5428 | } | |
5429 | ||
5430 | ||
5431 | ||
5432 | // ========================================================================== | |
5433 | // file lock | |
5434 | ||
5435 | ||
5436 | void Locker::file_eval(ScatterLock *lock, bool *need_issue) | |
5437 | { | |
5438 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
5439 | int loner_wanted, other_wanted; | |
5440 | int wanted = in->get_caps_wanted(&loner_wanted, &other_wanted, CEPH_CAP_SFILE); | |
5441 | dout(7) << "file_eval wanted=" << gcap_string(wanted) | |
5442 | << " loner_wanted=" << gcap_string(loner_wanted) | |
5443 | << " other_wanted=" << gcap_string(other_wanted) | |
5444 | << " filelock=" << *lock << " on " << *lock->get_parent() | |
5445 | << dendl; | |
5446 | ||
11fdf7f2 TL |
5447 | ceph_assert(lock->get_parent()->is_auth()); |
5448 | ceph_assert(lock->is_stable()); | |
7c673cae FG |
5449 | |
5450 | if (lock->get_parent()->is_freezing_or_frozen()) | |
5451 | return; | |
5452 | ||
5453 | if (mdcache->is_readonly()) { | |
5454 | if (lock->get_state() != LOCK_SYNC) { | |
5455 | dout(10) << "file_eval read-only FS, syncing " << *lock << " on " << *lock->get_parent() << dendl; | |
5456 | simple_sync(lock, need_issue); | |
5457 | } | |
5458 | return; | |
5459 | } | |
5460 | ||
5461 | // excl -> *? | |
5462 | if (lock->get_state() == LOCK_EXCL) { | |
5463 | dout(20) << " is excl" << dendl; | |
5464 | int loner_issued, other_issued, xlocker_issued; | |
5465 | in->get_caps_issued(&loner_issued, &other_issued, &xlocker_issued, CEPH_CAP_SFILE); | |
5466 | dout(7) << "file_eval loner_issued=" << gcap_string(loner_issued) | |
5467 | << " other_issued=" << gcap_string(other_issued) | |
5468 | << " xlocker_issued=" << gcap_string(xlocker_issued) | |
5469 | << dendl; | |
5470 | if (!((loner_wanted|loner_issued) & (CEPH_CAP_GEXCL|CEPH_CAP_GWR|CEPH_CAP_GBUFFER)) || | |
9f95a23c TL |
5471 | (other_wanted & (CEPH_CAP_GEXCL|CEPH_CAP_GWR|CEPH_CAP_GRD)) || |
5472 | (in->is_dir() && in->multiple_nonstale_caps())) { // FIXME.. :/ | |
7c673cae FG |
5473 | dout(20) << " should lose it" << dendl; |
5474 | // we should lose it. | |
5475 | // loner other want | |
5476 | // R R SYNC | |
5477 | // R R|W MIX | |
5478 | // R W MIX | |
5479 | // R|W R MIX | |
5480 | // R|W R|W MIX | |
5481 | // R|W W MIX | |
5482 | // W R MIX | |
5483 | // W R|W MIX | |
5484 | // W W MIX | |
5485 | // -> any writer means MIX; RD doesn't matter. | |
5486 | if (((other_wanted|loner_wanted) & CEPH_CAP_GWR) || | |
5487 | lock->is_waiter_for(SimpleLock::WAIT_WR)) | |
5488 | scatter_mix(lock, need_issue); | |
5489 | else if (!lock->is_wrlocked()) // let excl wrlocks drain first | |
5490 | simple_sync(lock, need_issue); | |
5491 | else | |
5492 | dout(10) << " waiting for wrlock to drain" << dendl; | |
5493 | } | |
5494 | } | |
5495 | ||
5496 | // * -> excl? | |
5497 | else if (lock->get_state() != LOCK_EXCL && | |
5498 | !lock->is_rdlocked() && | |
5499 | //!lock->is_waiter_for(SimpleLock::WAIT_WR) && | |
9f95a23c TL |
5500 | in->get_target_loner() >= 0 && |
5501 | (in->is_dir() ? | |
5502 | !in->has_subtree_or_exporting_dirfrag() : | |
5503 | (wanted & (CEPH_CAP_GEXCL|CEPH_CAP_GWR|CEPH_CAP_GBUFFER)))) { | |
7c673cae FG |
5504 | dout(7) << "file_eval stable, bump to loner " << *lock |
5505 | << " on " << *lock->get_parent() << dendl; | |
5506 | file_excl(lock, need_issue); | |
5507 | } | |
5508 | ||
5509 | // * -> mixed? | |
5510 | else if (lock->get_state() != LOCK_MIX && | |
5511 | !lock->is_rdlocked() && | |
5512 | //!lock->is_waiter_for(SimpleLock::WAIT_WR) && | |
5513 | (lock->get_scatter_wanted() || | |
b32b8144 | 5514 | (in->get_target_loner() < 0 && (wanted & CEPH_CAP_GWR)))) { |
7c673cae FG |
5515 | dout(7) << "file_eval stable, bump to mixed " << *lock |
5516 | << " on " << *lock->get_parent() << dendl; | |
5517 | scatter_mix(lock, need_issue); | |
5518 | } | |
5519 | ||
5520 | // * -> sync? | |
5521 | else if (lock->get_state() != LOCK_SYNC && | |
5522 | !lock->is_wrlocked() && // drain wrlocks first! | |
5523 | !lock->is_waiter_for(SimpleLock::WAIT_WR) && | |
f64942e4 | 5524 | !(wanted & CEPH_CAP_GWR) && |
7c673cae FG |
5525 | !((lock->get_state() == LOCK_MIX) && |
5526 | in->is_dir() && in->has_subtree_or_exporting_dirfrag()) // if we are a delegation point, stay where we are | |
5527 | //((wanted & CEPH_CAP_RD) || | |
5528 | //in->is_replicated() || | |
b32b8144 | 5529 | //lock->is_leased() || |
7c673cae FG |
5530 | //(!loner && lock->get_state() == LOCK_EXCL)) && |
5531 | ) { | |
5532 | dout(7) << "file_eval stable, bump to sync " << *lock | |
5533 | << " on " << *lock->get_parent() << dendl; | |
5534 | simple_sync(lock, need_issue); | |
5535 | } | |
f91f0fd5 TL |
5536 | else if (in->state_test(CInode::STATE_NEEDSRECOVER)) { |
5537 | mds->mdcache->queue_file_recover(in); | |
b3b6e05e | 5538 | mds->mdcache->do_file_recover(); |
f91f0fd5 | 5539 | } |
7c673cae FG |
5540 | } |
5541 | ||
5542 | ||
5543 | ||
5544 | void Locker::scatter_mix(ScatterLock *lock, bool *need_issue) | |
5545 | { | |
5546 | dout(7) << "scatter_mix " << *lock << " on " << *lock->get_parent() << dendl; | |
5547 | ||
5548 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
11fdf7f2 TL |
5549 | ceph_assert(in->is_auth()); |
5550 | ceph_assert(lock->is_stable()); | |
7c673cae FG |
5551 | |
5552 | if (lock->get_state() == LOCK_LOCK) { | |
5553 | in->start_scatter(lock); | |
5554 | if (in->is_replicated()) { | |
5555 | // data | |
5556 | bufferlist softdata; | |
5557 | lock->encode_locked_state(softdata); | |
5558 | ||
5559 | // bcast to replicas | |
5560 | send_lock_message(lock, LOCK_AC_MIX, softdata); | |
5561 | } | |
5562 | ||
5563 | // change lock | |
5564 | lock->set_state(LOCK_MIX); | |
5565 | lock->clear_scatter_wanted(); | |
5566 | if (lock->get_cap_shift()) { | |
5567 | if (need_issue) | |
5568 | *need_issue = true; | |
5569 | else | |
5570 | issue_caps(in); | |
5571 | } | |
5572 | } else { | |
5573 | // gather? | |
5574 | switch (lock->get_state()) { | |
5575 | case LOCK_SYNC: lock->set_state(LOCK_SYNC_MIX); break; | |
7c673cae | 5576 | case LOCK_EXCL: lock->set_state(LOCK_EXCL_MIX); break; |
b32b8144 | 5577 | case LOCK_XSYN: lock->set_state(LOCK_XSYN_MIX); break; |
7c673cae FG |
5578 | case LOCK_TSYN: lock->set_state(LOCK_TSYN_MIX); break; |
5579 | default: ceph_abort(); | |
5580 | } | |
5581 | ||
5582 | int gather = 0; | |
9f95a23c TL |
5583 | if (lock->is_rdlocked()) { |
5584 | if (lock->is_cached()) | |
5585 | invalidate_lock_caches(lock); | |
7c673cae | 5586 | gather++; |
9f95a23c | 5587 | } |
7c673cae | 5588 | if (in->is_replicated()) { |
b32b8144 | 5589 | if (lock->get_state() == LOCK_SYNC_MIX) { // for the rest states, replicas are already LOCK |
7c673cae FG |
5590 | send_lock_message(lock, LOCK_AC_MIX); |
5591 | lock->init_gather(); | |
5592 | gather++; | |
5593 | } | |
5594 | } | |
5595 | if (lock->is_leased()) { | |
5596 | revoke_client_leases(lock); | |
5597 | gather++; | |
5598 | } | |
5599 | if (lock->get_cap_shift() && | |
5600 | in->is_head() && | |
5601 | in->issued_caps_need_gather(lock)) { | |
5602 | if (need_issue) | |
5603 | *need_issue = true; | |
5604 | else | |
5605 | issue_caps(in); | |
5606 | gather++; | |
5607 | } | |
5608 | bool need_recover = false; | |
5609 | if (in->state_test(CInode::STATE_NEEDSRECOVER)) { | |
5610 | mds->mdcache->queue_file_recover(in); | |
5611 | need_recover = true; | |
5612 | gather++; | |
5613 | } | |
5614 | ||
5615 | if (gather) { | |
5616 | lock->get_parent()->auth_pin(lock); | |
5617 | if (need_recover) | |
5618 | mds->mdcache->do_file_recover(); | |
5619 | } else { | |
5620 | in->start_scatter(lock); | |
5621 | lock->set_state(LOCK_MIX); | |
5622 | lock->clear_scatter_wanted(); | |
5623 | if (in->is_replicated()) { | |
5624 | bufferlist softdata; | |
5625 | lock->encode_locked_state(softdata); | |
5626 | send_lock_message(lock, LOCK_AC_MIX, softdata); | |
5627 | } | |
5628 | if (lock->get_cap_shift()) { | |
5629 | if (need_issue) | |
5630 | *need_issue = true; | |
5631 | else | |
5632 | issue_caps(in); | |
5633 | } | |
5634 | } | |
5635 | } | |
5636 | } | |
5637 | ||
5638 | ||
5639 | void Locker::file_excl(ScatterLock *lock, bool *need_issue) | |
5640 | { | |
5641 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
5642 | dout(7) << "file_excl " << *lock << " on " << *lock->get_parent() << dendl; | |
5643 | ||
11fdf7f2 TL |
5644 | ceph_assert(in->is_auth()); |
5645 | ceph_assert(lock->is_stable()); | |
7c673cae | 5646 | |
11fdf7f2 | 5647 | ceph_assert((in->get_loner() >= 0 && in->get_mds_caps_wanted().empty()) || |
7c673cae FG |
5648 | (lock->get_state() == LOCK_XSYN)); // must do xsyn -> excl -> <anything else> |
5649 | ||
5650 | switch (lock->get_state()) { | |
5651 | case LOCK_SYNC: lock->set_state(LOCK_SYNC_EXCL); break; | |
5652 | case LOCK_MIX: lock->set_state(LOCK_MIX_EXCL); break; | |
5653 | case LOCK_LOCK: lock->set_state(LOCK_LOCK_EXCL); break; | |
5654 | case LOCK_XSYN: lock->set_state(LOCK_XSYN_EXCL); break; | |
5655 | default: ceph_abort(); | |
5656 | } | |
5657 | int gather = 0; | |
5658 | ||
5659 | if (lock->is_rdlocked()) | |
5660 | gather++; | |
5661 | if (lock->is_wrlocked()) | |
5662 | gather++; | |
9f95a23c TL |
5663 | if (gather && lock->is_cached()) |
5664 | invalidate_lock_caches(lock); | |
7c673cae FG |
5665 | |
5666 | if (in->is_replicated() && | |
5667 | lock->get_state() != LOCK_LOCK_EXCL && | |
5668 | lock->get_state() != LOCK_XSYN_EXCL) { // if we were lock, replicas are already lock. | |
5669 | send_lock_message(lock, LOCK_AC_LOCK); | |
5670 | lock->init_gather(); | |
5671 | gather++; | |
5672 | } | |
5673 | if (lock->is_leased()) { | |
5674 | revoke_client_leases(lock); | |
5675 | gather++; | |
5676 | } | |
5677 | if (in->is_head() && | |
5678 | in->issued_caps_need_gather(lock)) { | |
5679 | if (need_issue) | |
5680 | *need_issue = true; | |
5681 | else | |
5682 | issue_caps(in); | |
5683 | gather++; | |
5684 | } | |
5685 | bool need_recover = false; | |
5686 | if (in->state_test(CInode::STATE_NEEDSRECOVER)) { | |
5687 | mds->mdcache->queue_file_recover(in); | |
5688 | need_recover = true; | |
5689 | gather++; | |
5690 | } | |
5691 | ||
5692 | if (gather) { | |
5693 | lock->get_parent()->auth_pin(lock); | |
5694 | if (need_recover) | |
5695 | mds->mdcache->do_file_recover(); | |
5696 | } else { | |
5697 | lock->set_state(LOCK_EXCL); | |
5698 | if (need_issue) | |
5699 | *need_issue = true; | |
5700 | else | |
5701 | issue_caps(in); | |
5702 | } | |
5703 | } | |
5704 | ||
5705 | void Locker::file_xsyn(SimpleLock *lock, bool *need_issue) | |
5706 | { | |
5707 | dout(7) << "file_xsyn on " << *lock << " on " << *lock->get_parent() << dendl; | |
5708 | CInode *in = static_cast<CInode *>(lock->get_parent()); | |
11fdf7f2 TL |
5709 | ceph_assert(in->is_auth()); |
5710 | ceph_assert(in->get_loner() >= 0 && in->get_mds_caps_wanted().empty()); | |
7c673cae FG |
5711 | |
5712 | switch (lock->get_state()) { | |
5713 | case LOCK_EXCL: lock->set_state(LOCK_EXCL_XSYN); break; | |
5714 | default: ceph_abort(); | |
5715 | } | |
5716 | ||
5717 | int gather = 0; | |
9f95a23c TL |
5718 | if (lock->is_wrlocked()) { |
5719 | if (lock->is_cached()) | |
5720 | invalidate_lock_caches(lock); | |
7c673cae | 5721 | gather++; |
9f95a23c | 5722 | } |
7c673cae FG |
5723 | |
5724 | if (in->is_head() && | |
5725 | in->issued_caps_need_gather(lock)) { | |
5726 | if (need_issue) | |
5727 | *need_issue = true; | |
5728 | else | |
5729 | issue_caps(in); | |
5730 | gather++; | |
5731 | } | |
5732 | ||
5733 | if (gather) { | |
5734 | lock->get_parent()->auth_pin(lock); | |
5735 | } else { | |
5736 | lock->set_state(LOCK_XSYN); | |
5737 | lock->finish_waiters(SimpleLock::WAIT_RD|SimpleLock::WAIT_STABLE); | |
5738 | if (need_issue) | |
5739 | *need_issue = true; | |
5740 | else | |
5741 | issue_caps(in); | |
5742 | } | |
5743 | } | |
5744 | ||
5745 | void Locker::file_recover(ScatterLock *lock) | |
5746 | { | |
5747 | CInode *in = static_cast<CInode *>(lock->get_parent()); | |
5748 | dout(7) << "file_recover " << *lock << " on " << *in << dendl; | |
5749 | ||
11fdf7f2 | 5750 | ceph_assert(in->is_auth()); |
7c673cae | 5751 | //assert(lock->is_stable()); |
11fdf7f2 | 5752 | ceph_assert(lock->get_state() == LOCK_PRE_SCAN); // only called from MDCache::start_files_to_recover() |
7c673cae FG |
5753 | |
5754 | int gather = 0; | |
5755 | ||
5756 | /* | |
5757 | if (in->is_replicated() | |
5758 | lock->get_sm()->states[oldstate].replica_state != LOCK_LOCK) { | |
5759 | send_lock_message(lock, LOCK_AC_LOCK); | |
5760 | lock->init_gather(); | |
5761 | gather++; | |
5762 | } | |
5763 | */ | |
5764 | if (in->is_head() && | |
5765 | in->issued_caps_need_gather(lock)) { | |
5766 | issue_caps(in); | |
5767 | gather++; | |
5768 | } | |
5769 | ||
5770 | lock->set_state(LOCK_SCAN); | |
5771 | if (gather) | |
5772 | in->state_set(CInode::STATE_NEEDSRECOVER); | |
5773 | else | |
5774 | mds->mdcache->queue_file_recover(in); | |
5775 | } | |
5776 | ||
5777 | ||
5778 | // messenger | |
9f95a23c | 5779 | void Locker::handle_file_lock(ScatterLock *lock, const cref_t<MLock> &m) |
7c673cae FG |
5780 | { |
5781 | CInode *in = static_cast<CInode*>(lock->get_parent()); | |
5782 | int from = m->get_asker(); | |
5783 | ||
5784 | if (mds->is_rejoin()) { | |
5785 | if (in->is_rejoining()) { | |
5786 | dout(7) << "handle_file_lock still rejoining " << *in | |
5787 | << ", dropping " << *m << dendl; | |
7c673cae FG |
5788 | return; |
5789 | } | |
5790 | } | |
5791 | ||
11fdf7f2 | 5792 | dout(7) << "handle_file_lock a=" << lock->get_lock_action_name(m->get_action()) |
7c673cae FG |
5793 | << " on " << *lock |
5794 | << " from mds." << from << " " | |
5795 | << *in << dendl; | |
5796 | ||
5797 | bool caps = lock->get_cap_shift(); | |
5798 | ||
5799 | switch (m->get_action()) { | |
5800 | // -- replica -- | |
5801 | case LOCK_AC_SYNC: | |
11fdf7f2 | 5802 | ceph_assert(lock->get_state() == LOCK_LOCK || |
7c673cae | 5803 | lock->get_state() == LOCK_MIX || |
f38dd50b | 5804 | lock->get_state() == LOCK_MIX_SYNC || |
7c673cae FG |
5805 | lock->get_state() == LOCK_MIX_SYNC2); |
5806 | ||
5807 | if (lock->get_state() == LOCK_MIX) { | |
5808 | lock->set_state(LOCK_MIX_SYNC); | |
5809 | eval_gather(lock, true); | |
9f95a23c TL |
5810 | if (lock->is_unstable_and_locked()) { |
5811 | if (lock->is_cached()) | |
5812 | invalidate_lock_caches(lock); | |
31f18b77 | 5813 | mds->mdlog->flush(); |
9f95a23c | 5814 | } |
7c673cae FG |
5815 | break; |
5816 | } | |
5817 | ||
5818 | (static_cast<ScatterLock *>(lock))->finish_flush(); | |
5819 | (static_cast<ScatterLock *>(lock))->clear_flushed(); | |
5820 | ||
5821 | // ok | |
5822 | lock->decode_locked_state(m->get_data()); | |
5823 | lock->set_state(LOCK_SYNC); | |
5824 | ||
5825 | lock->get_rdlock(); | |
5826 | if (caps) | |
5827 | issue_caps(in); | |
5828 | lock->finish_waiters(SimpleLock::WAIT_RD|SimpleLock::WAIT_STABLE); | |
5829 | lock->put_rdlock(); | |
5830 | break; | |
5831 | ||
5832 | case LOCK_AC_LOCK: | |
5833 | switch (lock->get_state()) { | |
5834 | case LOCK_SYNC: lock->set_state(LOCK_SYNC_LOCK); break; | |
5835 | case LOCK_MIX: lock->set_state(LOCK_MIX_LOCK); break; | |
5836 | default: ceph_abort(); | |
5837 | } | |
5838 | ||
5839 | eval_gather(lock, true); | |
9f95a23c TL |
5840 | if (lock->is_unstable_and_locked()) { |
5841 | if (lock->is_cached()) | |
5842 | invalidate_lock_caches(lock); | |
31f18b77 | 5843 | mds->mdlog->flush(); |
9f95a23c | 5844 | } |
31f18b77 | 5845 | |
7c673cae FG |
5846 | break; |
5847 | ||
5848 | case LOCK_AC_LOCKFLUSHED: | |
5849 | (static_cast<ScatterLock *>(lock))->finish_flush(); | |
5850 | (static_cast<ScatterLock *>(lock))->clear_flushed(); | |
5851 | // wake up scatter_nudge waiters | |
5852 | if (lock->is_stable()) | |
5853 | lock->finish_waiters(SimpleLock::WAIT_STABLE); | |
5854 | break; | |
5855 | ||
5856 | case LOCK_AC_MIX: | |
11fdf7f2 | 5857 | ceph_assert(lock->get_state() == LOCK_SYNC || |
7c673cae FG |
5858 | lock->get_state() == LOCK_LOCK || |
5859 | lock->get_state() == LOCK_SYNC_MIX2); | |
5860 | ||
5861 | if (lock->get_state() == LOCK_SYNC) { | |
5862 | // MIXED | |
5863 | lock->set_state(LOCK_SYNC_MIX); | |
5864 | eval_gather(lock, true); | |
9f95a23c TL |
5865 | if (lock->is_unstable_and_locked()) { |
5866 | if (lock->is_cached()) | |
5867 | invalidate_lock_caches(lock); | |
31f18b77 | 5868 | mds->mdlog->flush(); |
9f95a23c | 5869 | } |
7c673cae FG |
5870 | break; |
5871 | } | |
c07f9fc5 | 5872 | |
7c673cae | 5873 | // ok |
7c673cae | 5874 | lock->set_state(LOCK_MIX); |
c07f9fc5 | 5875 | lock->decode_locked_state(m->get_data()); |
7c673cae FG |
5876 | |
5877 | if (caps) | |
5878 | issue_caps(in); | |
5879 | ||
5880 | lock->finish_waiters(SimpleLock::WAIT_WR|SimpleLock::WAIT_STABLE); | |
5881 | break; | |
5882 | ||
5883 | ||
5884 | // -- auth -- | |
5885 | case LOCK_AC_LOCKACK: | |
11fdf7f2 | 5886 | ceph_assert(lock->get_state() == LOCK_SYNC_LOCK || |
7c673cae FG |
5887 | lock->get_state() == LOCK_MIX_LOCK || |
5888 | lock->get_state() == LOCK_MIX_LOCK2 || | |
5889 | lock->get_state() == LOCK_MIX_EXCL || | |
5890 | lock->get_state() == LOCK_SYNC_EXCL || | |
5891 | lock->get_state() == LOCK_SYNC_MIX || | |
5892 | lock->get_state() == LOCK_MIX_TSYN); | |
11fdf7f2 | 5893 | ceph_assert(lock->is_gathering(from)); |
7c673cae FG |
5894 | lock->remove_gather(from); |
5895 | ||
5896 | if (lock->get_state() == LOCK_MIX_LOCK || | |
5897 | lock->get_state() == LOCK_MIX_LOCK2 || | |
5898 | lock->get_state() == LOCK_MIX_EXCL || | |
5899 | lock->get_state() == LOCK_MIX_TSYN) { | |
5900 | lock->decode_locked_state(m->get_data()); | |
5901 | // replica is waiting for AC_LOCKFLUSHED, eval_gather() should not | |
5902 | // delay calling scatter_writebehind(). | |
5903 | lock->clear_flushed(); | |
5904 | } | |
5905 | ||
5906 | if (lock->is_gathering()) { | |
5907 | dout(7) << "handle_file_lock " << *in << " from " << from | |
5908 | << ", still gathering " << lock->get_gather_set() << dendl; | |
5909 | } else { | |
5910 | dout(7) << "handle_file_lock " << *in << " from " << from | |
5911 | << ", last one" << dendl; | |
5912 | eval_gather(lock); | |
5913 | } | |
5914 | break; | |
5915 | ||
5916 | case LOCK_AC_SYNCACK: | |
11fdf7f2 TL |
5917 | ceph_assert(lock->get_state() == LOCK_MIX_SYNC); |
5918 | ceph_assert(lock->is_gathering(from)); | |
7c673cae FG |
5919 | lock->remove_gather(from); |
5920 | ||
5921 | lock->decode_locked_state(m->get_data()); | |
5922 | ||
5923 | if (lock->is_gathering()) { | |
5924 | dout(7) << "handle_file_lock " << *in << " from " << from | |
5925 | << ", still gathering " << lock->get_gather_set() << dendl; | |
5926 | } else { | |
5927 | dout(7) << "handle_file_lock " << *in << " from " << from | |
5928 | << ", last one" << dendl; | |
5929 | eval_gather(lock); | |
5930 | } | |
5931 | break; | |
5932 | ||
5933 | case LOCK_AC_MIXACK: | |
11fdf7f2 TL |
5934 | ceph_assert(lock->get_state() == LOCK_SYNC_MIX); |
5935 | ceph_assert(lock->is_gathering(from)); | |
7c673cae FG |
5936 | lock->remove_gather(from); |
5937 | ||
5938 | if (lock->is_gathering()) { | |
5939 | dout(7) << "handle_file_lock " << *in << " from " << from | |
5940 | << ", still gathering " << lock->get_gather_set() << dendl; | |
5941 | } else { | |
5942 | dout(7) << "handle_file_lock " << *in << " from " << from | |
5943 | << ", last one" << dendl; | |
5944 | eval_gather(lock); | |
5945 | } | |
5946 | break; | |
5947 | ||
5948 | ||
5949 | // requests.... | |
5950 | case LOCK_AC_REQSCATTER: | |
5951 | if (lock->is_stable()) { | |
5952 | /* NOTE: we can do this _even_ if !can_auth_pin (i.e. freezing) | |
5953 | * because the replica should be holding an auth_pin if they're | |
5954 | * doing this (and thus, we are freezing, not frozen, and indefinite | |
5955 | * starvation isn't an issue). | |
5956 | */ | |
5957 | dout(7) << "handle_file_lock got scatter request on " << *lock | |
5958 | << " on " << *lock->get_parent() << dendl; | |
5959 | if (lock->get_state() != LOCK_MIX) // i.e., the reqscatter didn't race with an actual mix/scatter | |
5960 | scatter_mix(lock); | |
5961 | } else { | |
5962 | dout(7) << "handle_file_lock got scatter request, !stable, marking scatter_wanted on " << *lock | |
5963 | << " on " << *lock->get_parent() << dendl; | |
5964 | lock->set_scatter_wanted(); | |
5965 | } | |
5966 | break; | |
5967 | ||
5968 | case LOCK_AC_REQUNSCATTER: | |
5969 | if (lock->is_stable()) { | |
5970 | /* NOTE: we can do this _even_ if !can_auth_pin (i.e. freezing) | |
5971 | * because the replica should be holding an auth_pin if they're | |
5972 | * doing this (and thus, we are freezing, not frozen, and indefinite | |
5973 | * starvation isn't an issue). | |
5974 | */ | |
5975 | dout(7) << "handle_file_lock got unscatter request on " << *lock | |
5976 | << " on " << *lock->get_parent() << dendl; | |
5977 | if (lock->get_state() == LOCK_MIX) // i.e., the reqscatter didn't race with an actual mix/scatter | |
5978 | simple_lock(lock); // FIXME tempsync? | |
5979 | } else { | |
5980 | dout(7) << "handle_file_lock ignoring unscatter request on " << *lock | |
5981 | << " on " << *lock->get_parent() << dendl; | |
5982 | lock->set_unscatter_wanted(); | |
5983 | } | |
5984 | break; | |
5985 | ||
5986 | case LOCK_AC_REQRDLOCK: | |
5987 | handle_reqrdlock(lock, m); | |
5988 | break; | |
5989 | ||
5990 | case LOCK_AC_NUDGE: | |
5991 | if (!lock->get_parent()->is_auth()) { | |
5992 | dout(7) << "handle_file_lock IGNORING nudge on non-auth " << *lock | |
5993 | << " on " << *lock->get_parent() << dendl; | |
5994 | } else if (!lock->get_parent()->is_replicated()) { | |
5995 | dout(7) << "handle_file_lock IGNORING nudge on non-replicated " << *lock | |
5996 | << " on " << *lock->get_parent() << dendl; | |
5997 | } else { | |
5998 | dout(7) << "handle_file_lock trying nudge on " << *lock | |
5999 | << " on " << *lock->get_parent() << dendl; | |
6000 | scatter_nudge(lock, 0, true); | |
6001 | mds->mdlog->flush(); | |
6002 | } | |
6003 | break; | |
6004 | ||
6005 | default: | |
6006 | ceph_abort(); | |
6007 | } | |
7c673cae | 6008 | } |