1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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.
27 #include "MDBalancer.h"
29 #include "ScrubStack.h"
31 #include "SnapClient.h"
40 #include "include/ceph_fs.h"
41 #include "include/filepath.h"
42 #include "include/util.h"
44 #include "msg/Message.h"
45 #include "msg/Messenger.h"
47 #include "common/MemoryModel.h"
48 #include "common/errno.h"
49 #include "common/perf_counters.h"
50 #include "common/safe_io.h"
52 #include "osdc/Journaler.h"
53 #include "osdc/Filer.h"
55 #include "events/ESubtreeMap.h"
56 #include "events/EUpdate.h"
57 #include "events/ESlaveUpdate.h"
58 #include "events/EImportFinish.h"
59 #include "events/EFragment.h"
60 #include "events/ECommitted.h"
61 #include "events/ESessions.h"
63 #include "messages/MGenericMessage.h"
65 #include "messages/MMDSResolve.h"
66 #include "messages/MMDSResolveAck.h"
67 #include "messages/MMDSCacheRejoin.h"
69 #include "messages/MDiscover.h"
70 #include "messages/MDiscoverReply.h"
72 //#include "messages/MInodeUpdate.h"
73 #include "messages/MDirUpdate.h"
74 #include "messages/MCacheExpire.h"
76 #include "messages/MInodeFileCaps.h"
78 #include "messages/MLock.h"
79 #include "messages/MDentryLink.h"
80 #include "messages/MDentryUnlink.h"
82 #include "messages/MMDSFindIno.h"
83 #include "messages/MMDSFindInoReply.h"
85 #include "messages/MMDSOpenIno.h"
86 #include "messages/MMDSOpenInoReply.h"
88 #include "messages/MClientRequest.h"
89 #include "messages/MClientCaps.h"
90 #include "messages/MClientSnap.h"
91 #include "messages/MClientQuota.h"
93 #include "messages/MMDSSlaveRequest.h"
95 #include "messages/MMDSFragmentNotify.h"
97 #include "messages/MGatherCaps.h"
101 #include "common/Timer.h"
103 #include "perfglue/heap_profiler.h"
107 #include "common/config.h"
108 #include "include/assert.h"
110 #define dout_context g_ceph_context
111 #define dout_subsys ceph_subsys_mds
113 #define dout_prefix _prefix(_dout, mds)
114 static ostream
& _prefix(std::ostream
*_dout
, MDSRank
*mds
) {
115 return *_dout
<< "mds." << mds
->get_nodeid() << ".cache ";
118 set
<int> SimpleLock::empty_gather_set
;
122 * All non-I/O contexts that require a reference
123 * to an MDCache instance descend from this.
125 class MDCacheContext
: public virtual MDSInternalContextBase
{
128 MDSRank
*get_mds() override
130 assert(mdcache
!= NULL
);
134 explicit MDCacheContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
139 * Only for contexts called back from an I/O completion
141 * Note: duplication of members wrt MDCacheContext, because
142 * it'ls the lesser of two evils compared with introducing
143 * yet another piece of (multiple) inheritance.
145 class MDCacheIOContext
: public virtual MDSIOContextBase
{
148 MDSRank
*get_mds() override
150 assert(mdcache
!= NULL
);
154 explicit MDCacheIOContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
157 class MDCacheLogContext
: public virtual MDSLogContextBase
{
160 MDSRank
*get_mds() override
162 assert(mdcache
!= NULL
);
166 explicit MDCacheLogContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
169 MDCache::MDCache(MDSRank
*m
, PurgeQueue
&purge_queue_
) :
171 filer(m
->objecter
, m
->finisher
),
172 exceeded_size_limit(false),
174 stray_manager(m
, purge_queue_
)
176 migrator
.reset(new Migrator(mds
, this));
182 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
186 num_shadow_inodes
= 0;
187 num_inodes_with_caps
= 0;
189 max_dir_commit_size
= g_conf
->mds_dir_max_commit_size
?
190 (g_conf
->mds_dir_max_commit_size
<< 20) :
191 (0.9 *(g_conf
->osd_max_write_size
<< 20));
193 discover_last_tid
= 0;
194 open_ino_last_tid
= 0;
195 find_ino_peer_last_tid
= 0;
199 client_lease_durations
[0] = 5.0;
200 client_lease_durations
[1] = 30.0;
201 client_lease_durations
[2] = 300.0;
203 resolves_pending
= false;
204 rejoins_pending
= false;
205 cap_imports_num_opening
= 0;
207 opening_root
= open
= false;
208 lru
.lru_set_midpoint(cache_mid());
210 bottom_lru
.lru_set_midpoint(0);
212 decayrate
.set_halflife(g_conf
->mds_decay_halflife
);
214 did_shutdown_log_cap
= false;
220 g_ceph_context
->get_perfcounters_collection()->remove(logger
.get());
226 void MDCache::log_stat()
228 mds
->logger
->set(l_mds_inode_max
, cache_limit_inodes() == 0 ? INT_MAX
: cache_limit_inodes());
229 mds
->logger
->set(l_mds_inodes
, lru
.lru_get_size());
230 mds
->logger
->set(l_mds_inodes_pinned
, lru
.lru_get_num_pinned());
231 mds
->logger
->set(l_mds_inodes_top
, lru
.lru_get_top());
232 mds
->logger
->set(l_mds_inodes_bottom
, lru
.lru_get_bot());
233 mds
->logger
->set(l_mds_inodes_pin_tail
, lru
.lru_get_pintail());
234 mds
->logger
->set(l_mds_inodes_with_caps
, num_inodes_with_caps
);
235 mds
->logger
->set(l_mds_caps
, Capability::count());
241 bool MDCache::shutdown()
243 if (lru
.lru_get_size() > 0) {
244 dout(7) << "WARNING: mdcache shutdown with non-empty cache" << dendl
;
253 // ====================================================================
254 // some inode functions
256 void MDCache::add_inode(CInode
*in
)
258 // add to lru, inode map
259 if (in
->last
== CEPH_NOSNAP
) {
260 auto &p
= inode_map
[in
->ino()];
261 assert(!p
); // should be no dup inos!
264 auto &p
= snap_inode_map
[in
->vino()];
265 assert(!p
); // should be no dup inos!
269 if (in
->ino() < MDS_INO_SYSTEM_BASE
) {
270 if (in
->ino() == MDS_INO_ROOT
)
272 else if (in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
274 else if (in
->is_stray()) {
275 if (MDS_INO_STRAY_OWNER(in
->ino()) == mds
->get_nodeid()) {
276 strays
[MDS_INO_STRAY_INDEX(in
->ino())] = in
;
280 base_inodes
.insert(in
);
283 if (cache_toofull()) {
284 exceeded_size_limit
= true;
288 void MDCache::remove_inode(CInode
*o
)
290 dout(14) << "remove_inode " << *o
<< dendl
;
292 if (o
->get_parent_dn()) {
293 // FIXME: multiple parents?
294 CDentry
*dn
= o
->get_parent_dn();
295 assert(!dn
->is_dirty());
296 dn
->dir
->unlink_inode(dn
); // leave dentry ... FIXME?
301 if (o
->is_dirty_parent())
302 o
->clear_dirty_parent();
304 o
->clear_scatter_dirty();
306 o
->item_open_file
.remove_myself();
308 if (o
->state_test(CInode::STATE_QUEUEDEXPORTPIN
))
309 export_pin_queue
.erase(o
);
311 // remove from inode map
312 if (o
->last
== CEPH_NOSNAP
)
313 inode_map
.erase(o
->ino());
315 snap_inode_map
.erase(o
->vino());
317 if (o
->ino() < MDS_INO_SYSTEM_BASE
) {
318 if (o
== root
) root
= 0;
319 if (o
== myin
) myin
= 0;
321 if (MDS_INO_STRAY_OWNER(o
->ino()) == mds
->get_nodeid()) {
322 strays
[MDS_INO_STRAY_INDEX(o
->ino())] = 0;
326 base_inodes
.erase(o
);
330 assert(o
->get_num_ref() == 0);
334 file_layout_t
MDCache::gen_default_file_layout(const MDSMap
&mdsmap
)
336 file_layout_t result
= file_layout_t::get_default();
337 result
.pool_id
= mdsmap
.get_first_data_pool();
341 file_layout_t
MDCache::gen_default_log_layout(const MDSMap
&mdsmap
)
343 file_layout_t result
= file_layout_t::get_default();
344 result
.pool_id
= mdsmap
.get_metadata_pool();
345 if (g_conf
->mds_log_segment_size
> 0) {
346 result
.object_size
= g_conf
->mds_log_segment_size
;
347 result
.stripe_unit
= g_conf
->mds_log_segment_size
;
352 void MDCache::init_layouts()
354 default_file_layout
= gen_default_file_layout(*(mds
->mdsmap
));
355 default_log_layout
= gen_default_log_layout(*(mds
->mdsmap
));
358 void MDCache::create_unlinked_system_inode(CInode
*in
, inodeno_t ino
,
362 in
->inode
.version
= 1;
363 in
->inode
.xattr_version
= 1;
364 in
->inode
.mode
= 0500 | mode
;
368 in
->inode
.btime
= ceph_clock_now();
370 in
->inode
.truncate_size
= -1ull;
371 in
->inode
.change_attr
= 0;
372 in
->inode
.export_pin
= MDS_RANK_NONE
;
374 memset(&in
->inode
.dir_layout
, 0, sizeof(in
->inode
.dir_layout
));
375 if (in
->inode
.is_dir()) {
376 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
377 ++in
->inode
.rstat
.rsubdirs
;
379 in
->inode
.layout
= default_file_layout
;
380 ++in
->inode
.rstat
.rfiles
;
382 in
->inode
.accounted_rstat
= in
->inode
.rstat
;
386 in
->inode_auth
= mds_authority_t(mds
->get_nodeid(), CDIR_AUTH_UNKNOWN
);
388 in
->inode_auth
= mds_authority_t(mds_rank_t(in
->ino() - MDS_INO_MDSDIR_OFFSET
), CDIR_AUTH_UNKNOWN
);
389 in
->open_snaprealm(); // empty snaprealm
390 assert(!in
->snaprealm
->parent
); // created its own
391 in
->snaprealm
->srnode
.seq
= 1;
395 CInode
*MDCache::create_system_inode(inodeno_t ino
, int mode
)
397 dout(0) << "creating system inode with ino:" << ino
<< dendl
;
398 CInode
*in
= new CInode(this);
399 create_unlinked_system_inode(in
, ino
, mode
);
404 CInode
*MDCache::create_root_inode()
406 CInode
*i
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755);
407 i
->inode
.uid
= g_conf
->mds_root_ino_uid
;
408 i
->inode
.gid
= g_conf
->mds_root_ino_gid
;
409 i
->inode
.layout
= default_file_layout
;
410 i
->inode
.layout
.pool_id
= mds
->mdsmap
->get_first_data_pool();
414 void MDCache::create_empty_hierarchy(MDSGather
*gather
)
417 CInode
*root
= create_root_inode();
419 // force empty root dir
420 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
421 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
422 rootdir
->dir_rep
= CDir::REP_ALL
; //NONE;
424 rootdir
->fnode
.accounted_fragstat
= rootdir
->fnode
.fragstat
;
425 rootdir
->fnode
.accounted_rstat
= rootdir
->fnode
.rstat
;
427 root
->inode
.dirstat
= rootdir
->fnode
.fragstat
;
428 root
->inode
.rstat
= rootdir
->fnode
.rstat
;
429 ++root
->inode
.rstat
.rsubdirs
;
430 root
->inode
.accounted_rstat
= root
->inode
.rstat
;
432 rootdir
->mark_complete();
433 rootdir
->mark_dirty(rootdir
->pre_dirty(), mds
->mdlog
->get_current_segment());
434 rootdir
->commit(0, gather
->new_sub());
436 root
->store(gather
->new_sub());
439 void MDCache::create_mydir_hierarchy(MDSGather
*gather
)
442 CInode
*my
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
);
444 CDir
*mydir
= my
->get_or_open_dirfrag(this, frag_t());
445 adjust_subtree_auth(mydir
, mds
->get_nodeid());
447 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
450 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
451 CInode
*stray
= create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
);
452 CDir
*straydir
= stray
->get_or_open_dirfrag(this, frag_t());
454 name
<< "stray" << i
;
455 CDentry
*sdn
= mydir
->add_primary_dentry(name
.str(), stray
);
456 sdn
->_mark_dirty(mds
->mdlog
->get_current_segment());
458 stray
->inode
.dirstat
= straydir
->fnode
.fragstat
;
460 mydir
->fnode
.rstat
.add(stray
->inode
.rstat
);
461 mydir
->fnode
.fragstat
.nsubdirs
++;
463 straydir
->mark_complete();
464 straydir
->mark_dirty(straydir
->pre_dirty(), ls
);
465 straydir
->commit(0, gather
->new_sub());
466 stray
->_mark_dirty_parent(ls
, true);
467 stray
->store_backtrace(gather
->new_sub());
470 mydir
->fnode
.accounted_fragstat
= mydir
->fnode
.fragstat
;
471 mydir
->fnode
.accounted_rstat
= mydir
->fnode
.rstat
;
473 myin
->inode
.dirstat
= mydir
->fnode
.fragstat
;
474 myin
->inode
.rstat
= mydir
->fnode
.rstat
;
475 ++myin
->inode
.rstat
.rsubdirs
;
476 myin
->inode
.accounted_rstat
= myin
->inode
.rstat
;
478 mydir
->mark_complete();
479 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
480 mydir
->commit(0, gather
->new_sub());
482 myin
->store(gather
->new_sub());
485 struct C_MDC_CreateSystemFile
: public MDCacheLogContext
{
489 MDSInternalContextBase
*fin
;
490 C_MDC_CreateSystemFile(MDCache
*c
, MutationRef
& mu
, CDentry
*d
, version_t v
, MDSInternalContextBase
*f
) :
491 MDCacheLogContext(c
), mut(mu
), dn(d
), dpv(v
), fin(f
) {}
492 void finish(int r
) override
{
493 mdcache
->_create_system_file_finish(mut
, dn
, dpv
, fin
);
497 void MDCache::_create_system_file(CDir
*dir
, const char *name
, CInode
*in
, MDSInternalContextBase
*fin
)
499 dout(10) << "_create_system_file " << name
<< " in " << *dir
<< dendl
;
500 CDentry
*dn
= dir
->add_null_dentry(name
);
502 dn
->push_projected_linkage(in
);
503 version_t dpv
= dn
->pre_dirty();
506 if (in
->inode
.is_dir()) {
507 in
->inode
.rstat
.rsubdirs
= 1;
509 mdir
= in
->get_or_open_dirfrag(this, frag_t());
510 mdir
->mark_complete();
513 in
->inode
.rstat
.rfiles
= 1;
514 in
->inode
.version
= dn
->pre_dirty();
516 SnapRealm
*realm
= dir
->get_inode()->find_snaprealm();
517 dn
->first
= in
->first
= realm
->get_newest_seq() + 1;
519 MutationRef
mut(new MutationImpl());
521 // force some locks. hacky.
522 mds
->locker
->wrlock_force(&dir
->inode
->filelock
, mut
);
523 mds
->locker
->wrlock_force(&dir
->inode
->nestlock
, mut
);
525 mut
->ls
= mds
->mdlog
->get_current_segment();
526 EUpdate
*le
= new EUpdate(mds
->mdlog
, "create system file");
527 mds
->mdlog
->start_entry(le
);
529 if (!in
->is_mdsdir()) {
530 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
531 le
->metablob
.add_primary_dentry(dn
, in
, true);
533 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_DIR
, 1);
534 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
535 dn
->push_projected_linkage(in
->ino(), in
->d_type());
536 le
->metablob
.add_remote_dentry(dn
, true, in
->ino(), in
->d_type());
537 le
->metablob
.add_root(true, in
);
540 le
->metablob
.add_new_dir(mdir
); // dirty AND complete AND new
542 mds
->mdlog
->submit_entry(le
, new C_MDC_CreateSystemFile(this, mut
, dn
, dpv
, fin
));
546 void MDCache::_create_system_file_finish(MutationRef
& mut
, CDentry
*dn
, version_t dpv
, MDSInternalContextBase
*fin
)
548 dout(10) << "_create_system_file_finish " << *dn
<< dendl
;
550 dn
->pop_projected_linkage();
551 dn
->mark_dirty(dpv
, mut
->ls
);
553 CInode
*in
= dn
->get_linkage()->get_inode();
555 in
->mark_dirty(in
->inode
.version
+ 1, mut
->ls
);
557 if (in
->inode
.is_dir()) {
558 CDir
*dir
= in
->get_dirfrag(frag_t());
560 dir
->mark_dirty(1, mut
->ls
);
561 dir
->mark_new(mut
->ls
);
565 mds
->locker
->drop_locks(mut
.get());
570 //if (dir && MDS_INO_IS_MDSDIR(in->ino()))
571 //migrator->export_dir(dir, (int)in->ino() - MDS_INO_MDSDIR_OFFSET);
576 struct C_MDS_RetryOpenRoot
: public MDSInternalContext
{
578 explicit C_MDS_RetryOpenRoot(MDCache
*c
) : MDSInternalContext(c
->mds
), cache(c
) {}
579 void finish(int r
) override
{
581 // If we can't open root, something disastrous has happened: mark
582 // this rank damaged for operator intervention. Note that
583 // it is not okay to call suicide() here because we are in
584 // a Finisher callback.
585 cache
->mds
->damaged();
586 ceph_abort(); // damaged should never return
593 void MDCache::open_root_inode(MDSInternalContextBase
*c
)
595 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
597 in
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755); // initially inaccurate!
600 discover_base_ino(MDS_INO_ROOT
, c
, mds
->mdsmap
->get_root());
604 void MDCache::open_mydir_inode(MDSInternalContextBase
*c
)
606 MDSGatherBuilder
gather(g_ceph_context
);
608 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
609 in
->fetch(gather
.new_sub());
611 gather
.set_finisher(c
);
615 void MDCache::open_root()
617 dout(10) << "open_root" << dendl
;
620 open_root_inode(new C_MDS_RetryOpenRoot(this));
623 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
624 assert(root
->is_auth());
625 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
627 if (!rootdir
->is_subtree_root())
628 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
629 if (!rootdir
->is_complete()) {
630 rootdir
->fetch(new C_MDS_RetryOpenRoot(this));
634 assert(!root
->is_auth());
635 CDir
*rootdir
= root
->get_dirfrag(frag_t());
637 open_remote_dirfrag(root
, frag_t(), new C_MDS_RetryOpenRoot(this));
643 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
644 in
->fetch(new C_MDS_RetryOpenRoot(this));
647 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
649 adjust_subtree_auth(mydir
, mds
->get_nodeid());
654 void MDCache::populate_mydir()
657 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
660 dout(10) << "populate_mydir " << *mydir
<< dendl
;
662 if (!mydir
->is_complete()) {
663 mydir
->fetch(new C_MDS_RetryOpenRoot(this));
667 if (mydir
->get_version() == 0 && mydir
->state_test(CDir::STATE_BADFRAG
)) {
668 // A missing dirfrag, we will recreate it. Before that, we must dirty
669 // it before dirtying any of the strays we create within it.
670 mds
->clog
->warn() << "fragment " << mydir
->dirfrag() << " was unreadable, "
672 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
673 mydir
->state_clear(CDir::STATE_BADFRAG
);
674 mydir
->mark_complete();
675 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
678 // open or create stray
679 uint64_t num_strays
= 0;
680 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
682 name
<< "stray" << i
;
683 CDentry
*straydn
= mydir
->lookup(name
.str());
685 // allow for older fs's with stray instead of stray0
686 if (straydn
== NULL
&& i
== 0)
687 straydn
= mydir
->lookup("stray");
689 if (!straydn
|| !straydn
->get_linkage()->get_inode()) {
690 _create_system_file(mydir
, name
.str().c_str(), create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
),
691 new C_MDS_RetryOpenRoot(this));
696 // we make multiple passes through this method; make sure we only pin each stray once.
697 if (!strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
698 strays
[i
]->get(CInode::PIN_STRAY
);
699 strays
[i
]->state_set(CInode::STATE_STRAYPINNED
);
700 strays
[i
]->get_stickydirs();
702 dout(20) << " stray num " << i
<< " is " << *strays
[i
] << dendl
;
706 strays
[i
]->dirfragtree
.get_leaves(ls
);
707 for (list
<frag_t
>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
709 CDir
*dir
= strays
[i
]->get_dirfrag(fg
);
711 dir
= strays
[i
]->get_or_open_dirfrag(this, fg
);
714 // DamageTable applies special handling to strays: it will
715 // have damaged() us out if one is damaged.
716 assert(!dir
->state_test(CDir::STATE_BADFRAG
));
718 if (dir
->get_version() == 0) {
719 dir
->fetch(new C_MDS_RetryOpenRoot(this));
723 if (dir
->get_frag_size() > 0)
724 num_strays
+= dir
->get_frag_size();
728 stray_manager
.set_num_strays(num_strays
);
731 dout(10) << "populate_mydir done" << dendl
;
734 mds
->queue_waiters(waiting_for_open
);
739 void MDCache::open_foreign_mdsdir(inodeno_t ino
, MDSInternalContextBase
*fin
)
741 discover_base_ino(ino
, fin
, mds_rank_t(ino
& (MAX_MDS
-1)));
744 CDir
*MDCache::get_stray_dir(CInode
*in
)
747 in
->name_stray_dentry(straydname
);
749 CInode
*strayi
= get_stray();
751 frag_t fg
= strayi
->pick_dirfrag(straydname
);
752 CDir
*straydir
= strayi
->get_dirfrag(fg
);
757 CDentry
*MDCache::get_or_create_stray_dentry(CInode
*in
)
759 CDir
*straydir
= get_stray_dir(in
);
761 in
->name_stray_dentry(straydname
);
762 CDentry
*straydn
= straydir
->lookup(straydname
);
764 straydn
= straydir
->add_null_dentry(straydname
);
767 assert(straydn
->get_projected_linkage()->is_null());
770 straydn
->state_set(CDentry::STATE_STRAY
);
776 MDSCacheObject
*MDCache::get_object(MDSCacheObjectInfo
&info
)
780 return get_inode(info
.ino
, info
.snapid
);
783 CDir
*dir
= get_dirfrag(info
.dirfrag
);
786 if (info
.dname
.length())
787 return dir
->lookup(info
.dname
, info
.snapid
);
795 // ====================================================================
796 // subtree management
798 void MDCache::list_subtrees(list
<CDir
*>& ls
)
800 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
803 ls
.push_back(p
->first
);
807 * adjust the dir_auth of a subtree.
808 * merge with parent and/or child subtrees, if is it appropriate.
809 * merge can ONLY happen if both parent and child have unambiguous auth.
811 void MDCache::adjust_subtree_auth(CDir
*dir
, mds_authority_t auth
)
813 dout(7) << "adjust_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
814 << " on " << *dir
<< dendl
;
819 if (dir
->inode
->is_base()) {
820 root
= dir
; // bootstrap hack.
821 if (subtrees
.count(root
) == 0) {
823 root
->get(CDir::PIN_SUBTREE
);
826 root
= get_subtree_root(dir
); // subtree root
829 assert(subtrees
.count(root
));
830 dout(7) << " current root is " << *root
<< dendl
;
833 // i am already a subtree.
834 dir
->set_dir_auth(auth
);
836 // i am a new subtree.
837 dout(10) << " new subtree at " << *dir
<< dendl
;
838 assert(subtrees
.count(dir
) == 0);
839 subtrees
[dir
]; // create empty subtree bounds list for me.
840 dir
->get(CDir::PIN_SUBTREE
);
843 dir
->set_dir_auth(auth
);
845 // move items nested beneath me, under me.
846 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
847 while (p
!= subtrees
[root
].end()) {
848 set
<CDir
*>::iterator next
= p
;
850 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
852 dout(10) << " claiming child bound " << **p
<< dendl
;
853 subtrees
[dir
].insert(*p
);
854 subtrees
[root
].erase(p
);
859 // i am a bound of the parent subtree.
860 subtrees
[root
].insert(dir
);
862 // i am now the subtree root.
865 // adjust recursive pop counters
866 if (dir
->is_auth()) {
867 utime_t now
= ceph_clock_now();
868 CDir
*p
= dir
->get_parent_dir();
870 p
->pop_auth_subtree
.sub(now
, decayrate
, dir
->pop_auth_subtree
);
871 if (p
->is_subtree_root()) break;
872 p
= p
->inode
->get_parent_dir();
881 void MDCache::try_subtree_merge(CDir
*dir
)
883 dout(7) << "try_subtree_merge " << *dir
<< dendl
;
884 // record my old bounds
885 auto oldbounds
= subtrees
.at(dir
);
887 set
<CInode
*> to_eval
;
888 // try merge at my root
889 try_subtree_merge_at(dir
, &to_eval
);
891 // try merge at my old bounds
892 for (auto bound
: oldbounds
)
893 try_subtree_merge_at(bound
, &to_eval
);
895 if (!(mds
->is_any_replay() || mds
->is_resolve())) {
896 for(auto in
: to_eval
)
897 eval_subtree_root(in
);
901 class C_MDC_SubtreeMergeWB
: public MDCacheLogContext
{
905 C_MDC_SubtreeMergeWB(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) : MDCacheLogContext(mdc
), in(i
), mut(m
) {}
906 void finish(int r
) override
{
907 mdcache
->subtree_merge_writebehind_finish(in
, mut
);
911 void MDCache::try_subtree_merge_at(CDir
*dir
, set
<CInode
*> *to_eval
)
913 dout(10) << "try_subtree_merge_at " << *dir
<< dendl
;
915 if (dir
->dir_auth
.second
!= CDIR_AUTH_UNKNOWN
||
916 dir
->state_test(CDir::STATE_EXPORTBOUND
) ||
917 dir
->state_test(CDir::STATE_AUXSUBTREE
))
920 auto it
= subtrees
.find(dir
);
921 assert(it
!= subtrees
.end());
923 // merge with parent?
925 if (!dir
->inode
->is_base())
926 parent
= get_subtree_root(dir
->get_parent_dir());
928 if (parent
!= dir
&& // we have a parent,
929 parent
->dir_auth
== dir
->dir_auth
) { // auth matches,
930 // merge with parent.
931 dout(10) << " subtree merge at " << *dir
<< dendl
;
932 dir
->set_dir_auth(CDIR_AUTH_DEFAULT
);
934 // move our bounds under the parent
935 subtrees
[parent
].insert(it
->second
.begin(), it
->second
.end());
937 // we are no longer a subtree or bound
938 dir
->put(CDir::PIN_SUBTREE
);
940 subtrees
[parent
].erase(dir
);
942 // adjust popularity?
943 if (dir
->is_auth()) {
944 utime_t now
= ceph_clock_now();
945 CDir
*p
= dir
->get_parent_dir();
947 p
->pop_auth_subtree
.add(now
, decayrate
, dir
->pop_auth_subtree
);
948 if (p
->is_subtree_root()) break;
949 p
= p
->inode
->get_parent_dir();
953 if (to_eval
&& dir
->get_inode()->is_auth())
954 to_eval
->insert(dir
->get_inode());
960 void MDCache::subtree_merge_writebehind_finish(CInode
*in
, MutationRef
& mut
)
962 dout(10) << "subtree_merge_writebehind_finish on " << in
<< dendl
;
963 in
->pop_and_dirty_projected_inode(mut
->ls
);
966 mds
->locker
->drop_locks(mut
.get());
969 in
->auth_unpin(this);
972 void MDCache::eval_subtree_root(CInode
*diri
)
974 // evaluate subtree inode filelock?
975 // (we should scatter the filelock on subtree bounds)
976 assert(diri
->is_auth());
977 mds
->locker
->try_eval(diri
, CEPH_LOCK_IFILE
| CEPH_LOCK_INEST
);
981 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, set
<CDir
*>& bounds
, mds_authority_t auth
)
983 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
985 << " bounds " << bounds
991 if (dir
->ino() == MDS_INO_ROOT
) {
992 root
= dir
; // bootstrap hack.
993 if (subtrees
.count(root
) == 0) {
995 root
->get(CDir::PIN_SUBTREE
);
998 root
= get_subtree_root(dir
); // subtree root
1001 assert(subtrees
.count(root
));
1002 dout(7) << " current root is " << *root
<< dendl
;
1004 mds_authority_t oldauth
= dir
->authority();
1007 // i am already a subtree.
1008 dir
->set_dir_auth(auth
);
1010 // i am a new subtree.
1011 dout(10) << " new subtree at " << *dir
<< dendl
;
1012 assert(subtrees
.count(dir
) == 0);
1013 subtrees
[dir
]; // create empty subtree bounds list for me.
1014 dir
->get(CDir::PIN_SUBTREE
);
1017 dir
->set_dir_auth(auth
);
1019 // move items nested beneath me, under me.
1020 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1021 while (p
!= subtrees
[root
].end()) {
1022 set
<CDir
*>::iterator next
= p
;
1024 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
1026 dout(10) << " claiming child bound " << **p
<< dendl
;
1027 subtrees
[dir
].insert(*p
);
1028 subtrees
[root
].erase(p
);
1033 // i am a bound of the parent subtree.
1034 subtrees
[root
].insert(dir
);
1036 // i am now the subtree root.
1040 set
<CInode
*> to_eval
;
1042 // verify/adjust bounds.
1043 // - these may be new, or
1044 // - beneath existing ambiguous bounds (which will be collapsed),
1045 // - but NOT beneath unambiguous bounds.
1046 for (set
<CDir
*>::iterator p
= bounds
.begin();
1052 if (subtrees
[dir
].count(bound
) == 0) {
1053 if (get_subtree_root(bound
) == dir
) {
1054 dout(10) << " new bound " << *bound
<< ", adjusting auth back to old " << oldauth
<< dendl
;
1055 adjust_subtree_auth(bound
, oldauth
); // otherwise, adjust at bound.
1058 dout(10) << " want bound " << *bound
<< dendl
;
1059 CDir
*t
= get_subtree_root(bound
->get_parent_dir());
1060 if (subtrees
[t
].count(bound
) == 0) {
1062 dout(10) << " new bound " << *bound
<< dendl
;
1063 adjust_subtree_auth(bound
, t
->authority());
1065 // make sure it's nested beneath ambiguous subtree(s)
1067 while (subtrees
[dir
].count(t
) == 0)
1068 t
= get_subtree_root(t
->get_parent_dir());
1069 dout(10) << " swallowing intervening subtree at " << *t
<< dendl
;
1070 adjust_subtree_auth(t
, auth
);
1071 try_subtree_merge_at(t
, &to_eval
);
1072 t
= get_subtree_root(bound
->get_parent_dir());
1073 if (t
== dir
) break;
1078 dout(10) << " already have bound " << *bound
<< dendl
;
1081 // merge stray bounds?
1082 while (!subtrees
[dir
].empty()) {
1083 set
<CDir
*> copy
= subtrees
[dir
];
1084 for (set
<CDir
*>::iterator p
= copy
.begin(); p
!= copy
.end(); ++p
) {
1085 if (bounds
.count(*p
) == 0) {
1087 dout(10) << " swallowing extra subtree at " << *stray
<< dendl
;
1088 adjust_subtree_auth(stray
, auth
);
1089 try_subtree_merge_at(stray
, &to_eval
);
1092 // swallowing subtree may add new subtree bounds
1093 if (copy
== subtrees
[dir
])
1097 // bound should now match.
1098 verify_subtree_bounds(dir
, bounds
);
1102 if (!(mds
->is_any_replay() || mds
->is_resolve())) {
1103 for(auto in
: to_eval
)
1104 eval_subtree_root(in
);
1110 * return a set of CDir*'s that correspond to the given bound set. Only adjust
1111 * fragmentation as necessary to get an equivalent bounding set. That is, only
1112 * split if one of our frags spans the provided bounding set. Never merge.
1114 void MDCache::get_force_dirfrag_bound_set(vector
<dirfrag_t
>& dfs
, set
<CDir
*>& bounds
)
1116 dout(10) << "get_force_dirfrag_bound_set " << dfs
<< dendl
;
1119 map
<inodeno_t
, fragset_t
> byino
;
1120 for (vector
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1121 byino
[p
->ino
].insert(p
->frag
);
1122 dout(10) << " by ino: " << byino
<< dendl
;
1124 for (map
<inodeno_t
,fragset_t
>::iterator p
= byino
.begin(); p
!= byino
.end(); ++p
) {
1125 CInode
*diri
= get_inode(p
->first
);
1128 dout(10) << " checking fragset " << p
->second
.get() << " on " << *diri
<< dendl
;
1131 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1132 tmpdft
.force_to_leaf(g_ceph_context
, *q
);
1134 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
1137 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1140 frag_t approx_fg
= diri
->dirfragtree
[fg
.value()];
1142 tmpdft
.get_leaves_under(approx_fg
, ls
);
1143 for (list
<frag_t
>::iterator r
= ls
.begin(); r
!= ls
.end(); ++r
) {
1144 if (p
->second
.get().count(*r
) == 0) {
1145 // not bound, so the resolve message is from auth MDS of the dirfrag
1146 force_dir_fragment(diri
, *r
);
1151 fgls
.push_back(approx_fg
);
1153 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1155 dout(10) << " frag " << fg
<< " contains " << fgls
<< dendl
;
1156 for (list
<frag_t
>::iterator r
= fgls
.begin(); r
!= fgls
.end(); ++r
) {
1157 CDir
*dir
= diri
->get_dirfrag(*r
);
1165 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, vector
<dirfrag_t
>& bound_dfs
, mds_authority_t auth
)
1167 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
1168 << " on " << *dir
<< " bound_dfs " << bound_dfs
<< dendl
;
1171 get_force_dirfrag_bound_set(bound_dfs
, bounds
);
1172 adjust_bounded_subtree_auth(dir
, bounds
, auth
);
1175 void MDCache::map_dirfrag_set(list
<dirfrag_t
>& dfs
, set
<CDir
*>& result
)
1177 dout(10) << "map_dirfrag_set " << dfs
<< dendl
;
1180 map
<inodeno_t
, fragset_t
> ino_fragset
;
1181 for (list
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1182 ino_fragset
[p
->ino
].insert(p
->frag
);
1185 for (map
<inodeno_t
, fragset_t
>::iterator p
= ino_fragset
.begin();
1186 p
!= ino_fragset
.end();
1188 CInode
*in
= get_inode(p
->first
);
1192 list
<frag_t
> fglist
;
1193 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1194 in
->dirfragtree
.get_leaves_under(*q
, fglist
);
1196 dout(15) << "map_dirfrag_set " << p
->second
<< " -> " << fglist
1197 << " on " << *in
<< dendl
;
1199 for (list
<frag_t
>::iterator q
= fglist
.begin(); q
!= fglist
.end(); ++q
) {
1200 CDir
*dir
= in
->get_dirfrag(*q
);
1209 CDir
*MDCache::get_subtree_root(CDir
*dir
)
1211 // find the underlying dir that delegates (or is about to delegate) auth
1213 if (dir
->is_subtree_root())
1215 dir
= dir
->get_inode()->get_parent_dir();
1221 CDir
*MDCache::get_projected_subtree_root(CDir
*dir
)
1223 // find the underlying dir that delegates (or is about to delegate) auth
1225 if (dir
->is_subtree_root())
1227 dir
= dir
->get_inode()->get_projected_parent_dir();
1233 void MDCache::remove_subtree(CDir
*dir
)
1235 dout(10) << "remove_subtree " << *dir
<< dendl
;
1236 assert(subtrees
.count(dir
));
1237 assert(subtrees
[dir
].empty());
1238 subtrees
.erase(dir
);
1239 dir
->put(CDir::PIN_SUBTREE
);
1240 if (dir
->get_parent_dir()) {
1241 CDir
*p
= get_subtree_root(dir
->get_parent_dir());
1242 assert(subtrees
[p
].count(dir
));
1243 subtrees
[p
].erase(dir
);
1247 void MDCache::get_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1249 assert(subtrees
.count(dir
));
1250 bounds
= subtrees
[dir
];
1253 void MDCache::get_wouldbe_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1255 if (subtrees
.count(dir
)) {
1256 // just copy them, dir is a subtree.
1257 get_subtree_bounds(dir
, bounds
);
1260 CDir
*root
= get_subtree_root(dir
);
1261 for (set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1262 p
!= subtrees
[root
].end();
1266 t
= t
->get_parent_dir();
1277 void MDCache::verify_subtree_bounds(CDir
*dir
, const set
<CDir
*>& bounds
)
1279 // for debugging only.
1280 assert(subtrees
.count(dir
));
1281 if (bounds
!= subtrees
[dir
]) {
1282 dout(0) << "verify_subtree_bounds failed" << dendl
;
1283 set
<CDir
*> b
= bounds
;
1284 for (auto &cd
: subtrees
[dir
]) {
1285 if (bounds
.count(cd
)) {
1289 dout(0) << " missing bound " << *cd
<< dendl
;
1291 for (const auto &cd
: b
)
1292 dout(0) << " extra bound " << *cd
<< dendl
;
1294 assert(bounds
== subtrees
[dir
]);
1297 void MDCache::verify_subtree_bounds(CDir
*dir
, const list
<dirfrag_t
>& bounds
)
1299 // for debugging only.
1300 assert(subtrees
.count(dir
));
1302 // make sure that any bounds i do have are properly noted as such.
1304 for (const auto &fg
: bounds
) {
1305 CDir
*bd
= get_dirfrag(fg
);
1307 if (subtrees
[dir
].count(bd
) == 0) {
1308 dout(0) << "verify_subtree_bounds failed: extra bound " << *bd
<< dendl
;
1312 assert(failed
== 0);
1315 void MDCache::project_subtree_rename(CInode
*diri
, CDir
*olddir
, CDir
*newdir
)
1317 dout(10) << "project_subtree_rename " << *diri
<< " from " << *olddir
1318 << " to " << *newdir
<< dendl
;
1319 projected_subtree_renames
[diri
].push_back(pair
<CDir
*,CDir
*>(olddir
, newdir
));
1322 void MDCache::adjust_subtree_after_rename(CInode
*diri
, CDir
*olddir
, bool pop
)
1324 dout(10) << "adjust_subtree_after_rename " << *diri
<< " from " << *olddir
<< dendl
;
1328 CDir
*newdir
= diri
->get_parent_dir();
1331 map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.find(diri
);
1332 assert(p
!= projected_subtree_renames
.end());
1333 assert(!p
->second
.empty());
1334 assert(p
->second
.front().first
== olddir
);
1335 assert(p
->second
.front().second
== newdir
);
1336 p
->second
.pop_front();
1337 if (p
->second
.empty())
1338 projected_subtree_renames
.erase(p
);
1343 // make sure subtree dirfrags are at the front of the list
1344 diri
->get_subtree_dirfrags(dfls
);
1345 diri
->get_nested_dirfrags(dfls
);
1346 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
1349 dout(10) << "dirfrag " << *dir
<< dendl
;
1350 CDir
*oldparent
= get_subtree_root(olddir
);
1351 dout(10) << " old parent " << *oldparent
<< dendl
;
1352 CDir
*newparent
= get_subtree_root(newdir
);
1353 dout(10) << " new parent " << *newparent
<< dendl
;
1355 if (oldparent
== newparent
) {
1356 dout(10) << "parent unchanged for " << *dir
<< " at " << *oldparent
<< dendl
;
1360 if (dir
->is_subtree_root()) {
1361 // children are fine. change parent.
1362 dout(10) << "moving " << *dir
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1363 assert(subtrees
[oldparent
].count(dir
));
1364 subtrees
[oldparent
].erase(dir
);
1365 assert(subtrees
.count(newparent
));
1366 subtrees
[newparent
].insert(dir
);
1367 // caller is responsible for 'eval diri'
1368 try_subtree_merge_at(dir
, NULL
);
1372 // see if any old bounds move to the new parent.
1374 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
1375 p
!= subtrees
[oldparent
].end();
1378 CDir
*broot
= get_subtree_root(bound
->get_parent_dir());
1379 if (broot
!= oldparent
) {
1380 assert(broot
== newparent
);
1381 tomove
.push_back(bound
);
1384 for (list
<CDir
*>::iterator p
= tomove
.begin(); p
!= tomove
.end(); ++p
) {
1386 dout(10) << "moving bound " << *bound
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1387 subtrees
[oldparent
].erase(bound
);
1388 subtrees
[newparent
].insert(bound
);
1392 if (oldparent
->authority() != newparent
->authority()) {
1393 adjust_subtree_auth(dir
, oldparent
->authority());
1394 // caller is responsible for 'eval diri'
1395 try_subtree_merge_at(dir
, NULL
);
1404 void MDCache::get_fullauth_subtrees(set
<CDir
*>& s
)
1406 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1407 p
!= subtrees
.end();
1409 CDir
*root
= p
->first
;
1410 if (root
->is_full_dir_auth())
1414 void MDCache::get_auth_subtrees(set
<CDir
*>& s
)
1416 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1417 p
!= subtrees
.end();
1419 CDir
*root
= p
->first
;
1420 if (root
->is_auth())
1428 int MDCache::num_subtrees()
1430 return subtrees
.size();
1433 int MDCache::num_subtrees_fullauth()
1436 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1437 p
!= subtrees
.end();
1439 CDir
*root
= p
->first
;
1440 if (root
->is_full_dir_auth())
1446 int MDCache::num_subtrees_fullnonauth()
1449 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1450 p
!= subtrees
.end();
1452 CDir
*root
= p
->first
;
1453 if (root
->is_full_dir_nonauth())
1461 // ===================================
1462 // journal and snap/cow helpers
1466 * find first inode in cache that follows given snapid. otherwise, return current.
1468 CInode
*MDCache::pick_inode_snap(CInode
*in
, snapid_t follows
)
1470 dout(10) << "pick_inode_snap follows " << follows
<< " on " << *in
<< dendl
;
1471 assert(in
->last
== CEPH_NOSNAP
);
1473 auto p
= snap_inode_map
.upper_bound(vinodeno_t(in
->ino(), follows
));
1474 if (p
!= snap_inode_map
.end() && p
->second
->ino() == in
->ino()) {
1475 dout(10) << "pick_inode_snap found " << *p
->second
<< dendl
;
1484 * note: i'm currently cheating wrt dirty and inode.version on cow
1485 * items. instead of doing a full dir predirty, i just take the
1486 * original item's version, and set the dirty flag (via
1487 * mutation::add_cow_{inode,dentry}() and mutation::apply(). that
1488 * means a special case in the dir commit clean sweep assertions.
1491 CInode
*MDCache::cow_inode(CInode
*in
, snapid_t last
)
1493 assert(last
>= in
->first
);
1495 CInode
*oldin
= new CInode(this, true, in
->first
, last
);
1496 oldin
->inode
= *in
->get_previous_projected_inode();
1497 oldin
->symlink
= in
->symlink
;
1498 oldin
->xattrs
= *in
->get_previous_projected_xattrs();
1499 oldin
->inode
.trim_client_ranges(last
);
1501 if (in
->first
< in
->oldest_snap
)
1502 in
->oldest_snap
= in
->first
;
1506 dout(10) << "cow_inode " << *in
<< " to " << *oldin
<< dendl
;
1509 if (in
->last
!= CEPH_NOSNAP
) {
1510 CInode
*head_in
= get_inode(in
->ino());
1512 if (head_in
->split_need_snapflush(oldin
, in
)) {
1513 oldin
->client_snap_caps
= in
->client_snap_caps
;
1514 for (compact_map
<int,set
<client_t
> >::iterator p
= in
->client_snap_caps
.begin();
1515 p
!= in
->client_snap_caps
.end();
1517 SimpleLock
*lock
= oldin
->get_lock(p
->first
);
1519 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
1520 oldin
->auth_pin(lock
);
1521 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1522 lock
->get_wrlock(true);
1529 if (!in
->client_caps
.empty()) {
1530 const set
<snapid_t
>& snaps
= in
->find_snaprealm()->get_snaps();
1532 for (auto p
: in
->client_caps
) {
1533 client_t client
= p
.first
;
1534 Capability
*cap
= p
.second
;
1535 int issued
= cap
->issued();
1536 if ((issued
& CEPH_CAP_ANY_WR
) &&
1537 cap
->client_follows
< last
) {
1539 for (int i
= 0; i
< num_cinode_locks
; i
++) {
1540 if (issued
& cinode_lock_info
[i
].wr_caps
) {
1541 int lockid
= cinode_lock_info
[i
].lock
;
1542 SimpleLock
*lock
= oldin
->get_lock(lockid
);
1544 oldin
->client_snap_caps
[lockid
].insert(client
);
1545 oldin
->auth_pin(lock
);
1546 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1547 lock
->get_wrlock(true);
1548 dout(10) << " client." << client
<< " cap " << ccap_string(issued
& cinode_lock_info
[i
].wr_caps
)
1549 << " wrlock lock " << *lock
<< " on " << *oldin
<< dendl
;
1552 cap
->client_follows
= last
;
1554 // we need snapflushes for any intervening snaps
1555 dout(10) << " snaps " << snaps
<< dendl
;
1556 for (auto q
= snaps
.lower_bound(oldin
->first
);
1557 q
!= snaps
.end() && *q
<= last
;
1559 in
->add_need_snapflush(oldin
, *q
, client
);
1562 dout(10) << " ignoring client." << client
<< " cap follows " << cap
->client_follows
<< dendl
;
1569 void MDCache::journal_cow_dentry(MutationImpl
*mut
, EMetaBlob
*metablob
,
1570 CDentry
*dn
, snapid_t follows
,
1571 CInode
**pcow_inode
, CDentry::linkage_t
*dnl
)
1574 dout(10) << "journal_cow_dentry got null CDentry, returning" << dendl
;
1577 dout(10) << "journal_cow_dentry follows " << follows
<< " on " << *dn
<< dendl
;
1578 assert(dn
->is_auth());
1580 // nothing to cow on a null dentry, fix caller
1582 dnl
= dn
->get_projected_linkage();
1583 assert(!dnl
->is_null());
1585 if (dnl
->is_primary() && dnl
->get_inode()->is_multiversion()) {
1586 // multiversion inode.
1587 CInode
*in
= dnl
->get_inode();
1588 SnapRealm
*realm
= NULL
;
1590 if (in
->get_projected_parent_dn() != dn
) {
1591 assert(follows
== CEPH_NOSNAP
);
1592 realm
= dn
->dir
->inode
->find_snaprealm();
1593 snapid_t dir_follows
= realm
->get_newest_snap();
1595 if (dir_follows
+1 > dn
->first
) {
1596 snapid_t oldfirst
= dn
->first
;
1597 dn
->first
= dir_follows
+1;
1598 if (realm
->has_snaps_in_range(oldfirst
, dir_follows
)) {
1599 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->name
, in
->ino(), in
->d_type(),
1600 oldfirst
, dir_follows
);
1602 dout(10) << " olddn " << *olddn
<< dendl
;
1603 metablob
->add_remote_dentry(olddn
, true);
1604 mut
->add_cow_dentry(olddn
);
1605 // FIXME: adjust link count here? hmm.
1607 if (dir_follows
+1 > in
->first
)
1608 in
->cow_old_inode(dir_follows
, false);
1612 if (in
->snaprealm
) {
1613 realm
= in
->snaprealm
;
1614 follows
= realm
->get_newest_seq();
1616 follows
= dir_follows
;
1618 realm
= in
->find_snaprealm();
1619 if (follows
== CEPH_NOSNAP
)
1620 follows
= realm
->get_newest_seq();
1624 if (follows
< in
->first
) {
1625 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *in
<< dendl
;
1629 if (!realm
->has_snaps_in_range(in
->first
, follows
)) {
1630 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *in
<< dendl
;
1631 in
->first
= follows
+ 1;
1635 in
->cow_old_inode(follows
, false);
1638 SnapRealm
*realm
= dn
->dir
->inode
->find_snaprealm();
1639 if (follows
== CEPH_NOSNAP
)
1640 follows
= realm
->get_newest_seq();
1643 if (follows
< dn
->first
) {
1644 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *dn
<< dendl
;
1648 // update dn.first before adding old dentry to cdir's map
1649 snapid_t oldfirst
= dn
->first
;
1650 dn
->first
= follows
+1;
1652 CInode
*in
= dnl
->is_primary() ? dnl
->get_inode() : NULL
;
1654 if (!realm
->has_snaps_in_range(oldfirst
, follows
)) {
1655 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *dn
<< dendl
;
1657 in
->first
= follows
+1;
1661 dout(10) << " dn " << *dn
<< dendl
;
1663 CInode
*oldin
= cow_inode(in
, follows
);
1664 mut
->add_cow_inode(oldin
);
1666 *pcow_inode
= oldin
;
1667 CDentry
*olddn
= dn
->dir
->add_primary_dentry(dn
->name
, oldin
, oldfirst
, oldin
->last
);
1668 oldin
->inode
.version
= olddn
->pre_dirty();
1669 dout(10) << " olddn " << *olddn
<< dendl
;
1670 bool need_snapflush
= !oldin
->client_snap_caps
.empty();
1672 mut
->ls
->open_files
.push_back(&oldin
->item_open_file
);
1673 metablob
->add_primary_dentry(olddn
, 0, true, false, false, need_snapflush
);
1674 mut
->add_cow_dentry(olddn
);
1676 assert(dnl
->is_remote());
1677 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->name
, dnl
->get_remote_ino(), dnl
->get_remote_d_type(),
1680 dout(10) << " olddn " << *olddn
<< dendl
;
1681 metablob
->add_remote_dentry(olddn
, true);
1682 mut
->add_cow_dentry(olddn
);
1688 void MDCache::journal_cow_inode(MutationRef
& mut
, EMetaBlob
*metablob
,
1689 CInode
*in
, snapid_t follows
,
1690 CInode
**pcow_inode
)
1692 dout(10) << "journal_cow_inode follows " << follows
<< " on " << *in
<< dendl
;
1693 CDentry
*dn
= in
->get_projected_parent_dn();
1694 journal_cow_dentry(mut
.get(), metablob
, dn
, follows
, pcow_inode
);
1697 void MDCache::journal_dirty_inode(MutationImpl
*mut
, EMetaBlob
*metablob
, CInode
*in
, snapid_t follows
)
1699 if (in
->is_base()) {
1700 metablob
->add_root(true, in
, in
->get_projected_inode());
1702 if (follows
== CEPH_NOSNAP
&& in
->last
!= CEPH_NOSNAP
)
1703 follows
= in
->first
- 1;
1704 CDentry
*dn
= in
->get_projected_parent_dn();
1705 if (!dn
->get_projected_linkage()->is_null()) // no need to cow a null dentry
1706 journal_cow_dentry(mut
, metablob
, dn
, follows
);
1707 if (in
->get_projected_inode()->is_backtrace_updated()) {
1708 bool dirty_pool
= in
->get_projected_inode()->layout
.pool_id
!=
1709 in
->get_previous_projected_inode()->layout
.pool_id
;
1710 metablob
->add_primary_dentry(dn
, in
, true, true, dirty_pool
);
1712 metablob
->add_primary_dentry(dn
, in
, true);
1719 // nested ---------------------------------------------------------------
1721 void MDCache::project_rstat_inode_to_frag(CInode
*cur
, CDir
*parent
, snapid_t first
,
1722 int linkunlink
, SnapRealm
*prealm
)
1724 CDentry
*parentdn
= cur
->get_projected_parent_dn();
1725 inode_t
*curi
= cur
->get_projected_inode();
1727 if (cur
->first
> first
)
1730 dout(10) << "projected_rstat_inode_to_frag first " << first
<< " linkunlink " << linkunlink
1731 << " " << *cur
<< dendl
;
1732 dout(20) << " frag head is [" << parent
->first
<< ",head] " << dendl
;
1733 dout(20) << " inode update is [" << first
<< "," << cur
->last
<< "]" << dendl
;
1736 * FIXME. this incompletely propagates rstats to _old_ parents
1737 * (i.e. shortly after a directory rename). but we need full
1738 * blown hard link backpointers to make this work properly...
1740 snapid_t floor
= parentdn
->first
;
1741 dout(20) << " floor of " << floor
<< " from parent dn " << *parentdn
<< dendl
;
1744 prealm
= parent
->inode
->find_snaprealm();
1745 const set
<snapid_t
> snaps
= prealm
->get_snaps();
1747 if (cur
->last
!= CEPH_NOSNAP
) {
1748 assert(cur
->dirty_old_rstats
.empty());
1749 set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(MAX(first
, floor
));
1750 if (q
== snaps
.end() || *q
> cur
->last
)
1754 if (cur
->last
>= floor
) {
1756 if (cur
->state_test(CInode::STATE_AMBIGUOUSAUTH
) && cur
->is_auth()) {
1757 // rename src inode is not projected in the slave rename prep case. so we should
1758 // avoid updateing the inode.
1759 assert(linkunlink
< 0);
1760 assert(cur
->is_frozen_inode());
1763 _project_rstat_inode_to_frag(*curi
, MAX(first
, floor
), cur
->last
, parent
,
1764 linkunlink
, update
);
1767 if (g_conf
->mds_snap_rstat
) {
1768 for (compact_set
<snapid_t
>::iterator p
= cur
->dirty_old_rstats
.begin();
1769 p
!= cur
->dirty_old_rstats
.end();
1771 old_inode_t
& old
= cur
->old_inodes
[*p
];
1772 snapid_t ofirst
= MAX(old
.first
, floor
);
1773 set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(ofirst
);
1774 if (q
== snaps
.end() || *q
> *p
)
1777 _project_rstat_inode_to_frag(old
.inode
, ofirst
, *p
, parent
, 0, false);
1780 cur
->dirty_old_rstats
.clear();
1784 void MDCache::_project_rstat_inode_to_frag(inode_t
& inode
, snapid_t ofirst
, snapid_t last
,
1785 CDir
*parent
, int linkunlink
, bool update_inode
)
1787 dout(10) << "_project_rstat_inode_to_frag [" << ofirst
<< "," << last
<< "]" << dendl
;
1788 dout(20) << " inode rstat " << inode
.rstat
<< dendl
;
1789 dout(20) << " inode accounted_rstat " << inode
.accounted_rstat
<< dendl
;
1791 if (linkunlink
== 0) {
1792 delta
.add(inode
.rstat
);
1793 delta
.sub(inode
.accounted_rstat
);
1794 } else if (linkunlink
< 0) {
1795 delta
.sub(inode
.accounted_rstat
);
1797 delta
.add(inode
.rstat
);
1799 dout(20) << " delta " << delta
<< dendl
;
1802 inode
.accounted_rstat
= inode
.rstat
;
1804 while (last
>= ofirst
) {
1806 * pick fnode version to update. at each iteration, we want to
1807 * pick a segment ending in 'last' to update. split as necessary
1808 * to make that work. then, adjust first up so that we only
1809 * update one segment at a time. then loop to cover the whole
1810 * [ofirst,last] interval.
1812 nest_info_t
*prstat
;
1814 fnode_t
*pf
= parent
->get_projected_fnode();
1815 if (last
== CEPH_NOSNAP
) {
1816 if (g_conf
->mds_snap_rstat
)
1817 first
= MAX(ofirst
, parent
->first
);
1819 first
= parent
->first
;
1820 prstat
= &pf
->rstat
;
1821 dout(20) << " projecting to head [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1823 if (first
> parent
->first
&&
1824 !(pf
->rstat
== pf
->accounted_rstat
)) {
1825 dout(10) << " target snapped and not fully accounted, cow to dirty_old_rstat ["
1826 << parent
->first
<< "," << (first
-1) << "] "
1827 << " " << *prstat
<< "/" << pf
->accounted_rstat
1829 parent
->dirty_old_rstat
[first
-1].first
= parent
->first
;
1830 parent
->dirty_old_rstat
[first
-1].rstat
= pf
->rstat
;
1831 parent
->dirty_old_rstat
[first
-1].accounted_rstat
= pf
->accounted_rstat
;
1833 parent
->first
= first
;
1834 } else if (!g_conf
->mds_snap_rstat
) {
1835 // drop snapshots' rstats
1837 } else if (last
>= parent
->first
) {
1838 first
= parent
->first
;
1839 parent
->dirty_old_rstat
[last
].first
= first
;
1840 parent
->dirty_old_rstat
[last
].rstat
= pf
->rstat
;
1841 parent
->dirty_old_rstat
[last
].accounted_rstat
= pf
->accounted_rstat
;
1842 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1843 dout(10) << " projecting to newly split dirty_old_fnode [" << first
<< "," << last
<< "] "
1844 << " " << *prstat
<< "/" << pf
->accounted_rstat
<< dendl
;
1846 // be careful, dirty_old_rstat is a _sparse_ map.
1847 // sorry, this is ugly.
1850 // find any intersection with last
1851 compact_map
<snapid_t
,old_rstat_t
>::iterator p
= parent
->dirty_old_rstat
.lower_bound(last
);
1852 if (p
== parent
->dirty_old_rstat
.end()) {
1853 dout(20) << " no dirty_old_rstat with last >= last " << last
<< dendl
;
1854 if (!parent
->dirty_old_rstat
.empty() && parent
->dirty_old_rstat
.rbegin()->first
>= first
) {
1855 dout(20) << " last dirty_old_rstat ends at " << parent
->dirty_old_rstat
.rbegin()->first
<< dendl
;
1856 first
= parent
->dirty_old_rstat
.rbegin()->first
+1;
1859 // *p last is >= last
1860 if (p
->second
.first
<= last
) {
1861 // *p intersects [first,last]
1862 if (p
->second
.first
< first
) {
1863 dout(10) << " splitting off left bit [" << p
->second
.first
<< "," << first
-1 << "]" << dendl
;
1864 parent
->dirty_old_rstat
[first
-1] = p
->second
;
1865 p
->second
.first
= first
;
1867 if (p
->second
.first
> first
)
1868 first
= p
->second
.first
;
1869 if (last
< p
->first
) {
1870 dout(10) << " splitting off right bit [" << last
+1 << "," << p
->first
<< "]" << dendl
;
1871 parent
->dirty_old_rstat
[last
] = p
->second
;
1872 p
->second
.first
= last
+1;
1875 // *p is to the _right_ of [first,last]
1876 p
= parent
->dirty_old_rstat
.lower_bound(first
);
1877 // new *p last is >= first
1878 if (p
->second
.first
<= last
&& // new *p isn't also to the right, and
1879 p
->first
>= first
) { // it intersects our first bit,
1880 dout(10) << " staying to the right of [" << p
->second
.first
<< "," << p
->first
<< "]..." << dendl
;
1883 dout(10) << " projecting to new dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1886 dout(20) << " projecting to dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1887 parent
->dirty_old_rstat
[last
].first
= first
;
1888 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1892 dout(20) << " project to [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1893 assert(last
>= first
);
1896 inode
.accounted_rstat
= inode
.rstat
;
1897 dout(20) << " result [" << first
<< "," << last
<< "] " << *prstat
<< " " << *parent
<< dendl
;
1903 void MDCache::project_rstat_frag_to_inode(nest_info_t
& rstat
, nest_info_t
& accounted_rstat
,
1904 snapid_t ofirst
, snapid_t last
,
1905 CInode
*pin
, bool cow_head
)
1907 dout(10) << "project_rstat_frag_to_inode [" << ofirst
<< "," << last
<< "]" << dendl
;
1908 dout(20) << " frag rstat " << rstat
<< dendl
;
1909 dout(20) << " frag accounted_rstat " << accounted_rstat
<< dendl
;
1910 nest_info_t delta
= rstat
;
1911 delta
.sub(accounted_rstat
);
1912 dout(20) << " delta " << delta
<< dendl
;
1914 while (last
>= ofirst
) {
1917 if (last
== pin
->last
) {
1918 pi
= pin
->get_projected_inode();
1919 first
= MAX(ofirst
, pin
->first
);
1920 if (first
> pin
->first
) {
1921 old_inode_t
& old
= pin
->cow_old_inode(first
-1, cow_head
);
1922 dout(20) << " cloned old_inode rstat is " << old
.inode
.rstat
<< dendl
;
1925 if (last
>= pin
->first
) {
1927 pin
->cow_old_inode(last
, cow_head
);
1929 // our life is easier here because old_inodes is not sparse
1930 // (although it may not begin at snapid 1)
1931 compact_map
<snapid_t
,old_inode_t
>::iterator p
= pin
->old_inodes
.lower_bound(last
);
1932 if (p
== pin
->old_inodes
.end()) {
1933 dout(10) << " no old_inode <= " << last
<< ", done." << dendl
;
1936 first
= p
->second
.first
;
1938 dout(10) << " oldest old_inode is [" << first
<< "," << p
->first
<< "], done." << dendl
;
1939 //assert(p == pin->old_inodes.begin());
1942 if (p
->first
> last
) {
1943 dout(10) << " splitting right old_inode [" << first
<< "," << p
->first
<< "] to ["
1944 << (last
+1) << "," << p
->first
<< "]" << dendl
;
1945 pin
->old_inodes
[last
] = p
->second
;
1946 p
->second
.first
= last
+1;
1947 pin
->dirty_old_rstats
.insert(p
->first
);
1950 if (first
< ofirst
) {
1951 dout(10) << " splitting left old_inode [" << first
<< "," << last
<< "] to ["
1952 << first
<< "," << ofirst
-1 << "]" << dendl
;
1953 pin
->old_inodes
[ofirst
-1] = pin
->old_inodes
[last
];
1954 pin
->dirty_old_rstats
.insert(ofirst
-1);
1955 pin
->old_inodes
[last
].first
= first
= ofirst
;
1957 pi
= &pin
->old_inodes
[last
].inode
;
1958 pin
->dirty_old_rstats
.insert(last
);
1960 dout(20) << " projecting to [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1961 pi
->rstat
.add(delta
);
1962 dout(20) << " result [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1968 void MDCache::broadcast_quota_to_client(CInode
*in
)
1970 if (!in
->is_auth() || in
->is_frozen())
1973 inode_t
*i
= in
->get_projected_inode();
1975 if (!i
->quota
.is_enable())
1978 for (map
<client_t
,Capability
*>::iterator it
= in
->client_caps
.begin();
1979 it
!= in
->client_caps
.end();
1981 Session
*session
= mds
->get_session(it
->first
);
1982 if (!session
|| !session
->connection
||
1983 !session
->connection
->has_feature(CEPH_FEATURE_MDS_QUOTA
))
1986 Capability
*cap
= it
->second
;
1987 if (cap
->last_rbytes
== i
->rstat
.rbytes
&&
1988 cap
->last_rsize
== i
->rstat
.rsize())
1991 if (i
->quota
.max_files
> 0) {
1992 if (i
->rstat
.rsize() >= i
->quota
.max_files
)
1995 if ((abs(cap
->last_rsize
- i
->quota
.max_files
) >> 4) <
1996 abs(cap
->last_rsize
- i
->rstat
.rsize()))
2000 if (i
->quota
.max_bytes
> 0) {
2001 if (i
->rstat
.rbytes
> i
->quota
.max_bytes
- (i
->quota
.max_bytes
>> 3))
2004 if ((abs(cap
->last_rbytes
- i
->quota
.max_bytes
) >> 4) <
2005 abs(cap
->last_rbytes
- i
->rstat
.rbytes
))
2012 cap
->last_rsize
= i
->rstat
.rsize();
2013 cap
->last_rbytes
= i
->rstat
.rbytes
;
2015 MClientQuota
*msg
= new MClientQuota();
2016 msg
->ino
= in
->ino();
2017 msg
->rstat
= i
->rstat
;
2018 msg
->quota
= i
->quota
;
2019 mds
->send_message_client_counted(msg
, session
->connection
);
2021 for (const auto &it
: in
->get_replicas()) {
2022 MGatherCaps
*msg
= new MGatherCaps
;
2023 msg
->ino
= in
->ino();
2024 mds
->send_message_mds(msg
, it
.first
);
2029 * NOTE: we _have_ to delay the scatter if we are called during a
2030 * rejoin, because we can't twiddle locks between when the
2031 * rejoin_(weak|strong) is received and when we send the rejoin_ack.
2032 * normally, this isn't a problem: a recover mds doesn't twiddle locks
2033 * (no requests), and a survivor acks immediately. _except_ that
2034 * during rejoin_(weak|strong) processing, we may complete a lock
2035 * gather, and do a scatter_writebehind.. and we _can't_ twiddle the
2036 * scatterlock state in that case or the lock states will get out of
2037 * sync between the auth and replica.
2039 * the simple solution is to never do the scatter here. instead, put
2040 * the scatterlock on a list if it isn't already wrlockable. this is
2041 * probably the best plan anyway, since we avoid too many
2042 * scatters/locks under normal usage.
2045 * some notes on dirlock/nestlock scatterlock semantics:
2047 * the fragstat (dirlock) will never be updated without
2048 * dirlock+nestlock wrlock held by the caller.
2050 * the rstat (nestlock) _may_ get updated without a wrlock when nested
2051 * data is pushed up the tree. this could be changed with some
2052 * restructuring here, but in its current form we ensure that the
2053 * fragstat+rstat _always_ reflect an accurrate summation over the dir
2054 * frag, which is nice. and, we only need to track frags that need to
2055 * be nudged (and not inodes with pending rstat changes that need to
2056 * be pushed into the frag). a consequence of this is that the
2057 * accounted_rstat on scatterlock sync may not match our current
2058 * rstat. this is normal and expected.
2060 void MDCache::predirty_journal_parents(MutationRef mut
, EMetaBlob
*blob
,
2061 CInode
*in
, CDir
*parent
,
2062 int flags
, int linkunlink
,
2065 bool primary_dn
= flags
& PREDIRTY_PRIMARY
;
2066 bool do_parent_mtime
= flags
& PREDIRTY_DIR
;
2067 bool shallow
= flags
& PREDIRTY_SHALLOW
;
2069 assert(mds
->mdlog
->entry_is_open());
2071 // make sure stamp is set
2072 if (mut
->get_mds_stamp() == utime_t())
2073 mut
->set_mds_stamp(ceph_clock_now());
2078 dout(10) << "predirty_journal_parents"
2079 << (do_parent_mtime
? " do_parent_mtime":"")
2080 << " linkunlink=" << linkunlink
2081 << (primary_dn
? " primary_dn":" remote_dn")
2082 << (shallow
? " SHALLOW":"")
2083 << " follows " << cfollows
2084 << " " << *in
<< dendl
;
2088 parent
= in
->get_projected_parent_dn()->get_dir();
2091 if (flags
== 0 && linkunlink
== 0) {
2092 dout(10) << " no flags/linkunlink, just adding dir context to blob(s)" << dendl
;
2093 blob
->add_dir_context(parent
);
2097 // build list of inodes to wrlock, dirty, and update
2100 CDentry
*parentdn
= NULL
;
2103 //assert(cur->is_auth() || !primary_dn); // this breaks the rename auth twiddle hack
2104 assert(parent
->is_auth());
2106 // opportunistically adjust parent dirfrag
2107 CInode
*pin
= parent
->get_inode();
2110 mut
->auth_pin(parent
);
2111 mut
->add_projected_fnode(parent
);
2113 fnode_t
*pf
= parent
->project_fnode();
2114 pf
->version
= parent
->pre_dirty();
2116 if (do_parent_mtime
|| linkunlink
) {
2117 assert(mut
->wrlocks
.count(&pin
->filelock
));
2118 assert(mut
->wrlocks
.count(&pin
->nestlock
));
2119 assert(cfollows
== CEPH_NOSNAP
);
2121 // update stale fragstat/rstat?
2122 parent
->resync_accounted_fragstat();
2123 parent
->resync_accounted_rstat();
2125 if (do_parent_mtime
) {
2126 pf
->fragstat
.mtime
= mut
->get_op_stamp();
2127 pf
->fragstat
.change_attr
++;
2128 dout(10) << "predirty_journal_parents bumping change_attr to " << pf
->fragstat
.change_attr
<< " on " << parent
<< dendl
;
2129 if (pf
->fragstat
.mtime
> pf
->rstat
.rctime
) {
2130 dout(10) << "predirty_journal_parents updating mtime on " << *parent
<< dendl
;
2131 pf
->rstat
.rctime
= pf
->fragstat
.mtime
;
2133 dout(10) << "predirty_journal_parents updating mtime UNDERWATER on " << *parent
<< dendl
;
2137 dout(10) << "predirty_journal_parents updating size on " << *parent
<< dendl
;
2139 pf
->fragstat
.nsubdirs
+= linkunlink
;
2140 //pf->rstat.rsubdirs += linkunlink;
2142 pf
->fragstat
.nfiles
+= linkunlink
;
2143 //pf->rstat.rfiles += linkunlink;
2150 // don't update parent this pass
2151 } else if (!linkunlink
&& !(pin
->nestlock
.can_wrlock(-1) &&
2152 pin
->versionlock
.can_wrlock())) {
2153 dout(20) << " unwritable parent nestlock " << pin
->nestlock
2154 << ", marking dirty rstat on " << *cur
<< dendl
;
2155 cur
->mark_dirty_rstat();
2157 // if we don't hold a wrlock reference on this nestlock, take one,
2158 // because we are about to write into the dirfrag fnode and that needs
2159 // to commit before the lock can cycle.
2161 assert(pin
->nestlock
.get_num_wrlocks() || mut
->is_slave());
2164 if (mut
->wrlocks
.count(&pin
->nestlock
) == 0) {
2165 dout(10) << " taking wrlock on " << pin
->nestlock
<< " on " << *pin
<< dendl
;
2166 mds
->locker
->wrlock_force(&pin
->nestlock
, mut
);
2169 // now we can project the inode rstat diff the dirfrag
2170 SnapRealm
*prealm
= pin
->find_snaprealm();
2172 snapid_t follows
= cfollows
;
2173 if (follows
== CEPH_NOSNAP
)
2174 follows
= prealm
->get_newest_seq();
2176 snapid_t first
= follows
+1;
2178 // first, if the frag is stale, bring it back in sync.
2179 parent
->resync_accounted_rstat();
2181 // now push inode rstats into frag
2182 project_rstat_inode_to_frag(cur
, parent
, first
, linkunlink
, prealm
);
2183 cur
->clear_dirty_rstat();
2187 if (!pin
->is_auth() || (!mut
->is_auth_pinned(pin
) && !pin
->can_auth_pin())) {
2188 dout(10) << "predirty_journal_parents !auth or ambig or can't authpin on " << *pin
<< dendl
;
2192 // delay propagating until later?
2193 if (!stop
&& !first
&&
2194 g_conf
->mds_dirstat_min_interval
> 0) {
2195 double since_last_prop
= mut
->get_mds_stamp() - pin
->last_dirstat_prop
;
2196 if (since_last_prop
< g_conf
->mds_dirstat_min_interval
) {
2197 dout(10) << "predirty_journal_parents last prop " << since_last_prop
2198 << " < " << g_conf
->mds_dirstat_min_interval
2199 << ", stopping" << dendl
;
2202 dout(10) << "predirty_journal_parents last prop " << since_last_prop
<< " ago, continuing" << dendl
;
2206 // can cast only because i'm passing nowait=true in the sole user
2207 MDRequestRef mdmut
= static_cast<MDRequestImpl
*>(mut
.get());
2209 mut
->wrlocks
.count(&pin
->nestlock
) == 0 &&
2210 (!pin
->versionlock
.can_wrlock() || // make sure we can take versionlock, too
2212 !mds
->locker
->wrlock_start(&pin
->nestlock
, mdmut
, true)
2213 )) { // ** do not initiate.. see above comment **
2214 dout(10) << "predirty_journal_parents can't wrlock one of " << pin
->versionlock
<< " or " << pin
->nestlock
2215 << " on " << *pin
<< dendl
;
2219 dout(10) << "predirty_journal_parents stop. marking nestlock on " << *pin
<< dendl
;
2220 mds
->locker
->mark_updated_scatterlock(&pin
->nestlock
);
2221 mut
->ls
->dirty_dirfrag_nest
.push_back(&pin
->item_dirty_dirfrag_nest
);
2222 mut
->add_updated_lock(&pin
->nestlock
);
2223 if (do_parent_mtime
|| linkunlink
) {
2224 mds
->locker
->mark_updated_scatterlock(&pin
->filelock
);
2225 mut
->ls
->dirty_dirfrag_dir
.push_back(&pin
->item_dirty_dirfrag_dir
);
2226 mut
->add_updated_lock(&pin
->filelock
);
2230 if (!mut
->wrlocks
.count(&pin
->versionlock
))
2231 mds
->locker
->local_wrlock_grab(&pin
->versionlock
, mut
);
2233 assert(mut
->wrlocks
.count(&pin
->nestlock
) ||
2236 pin
->last_dirstat_prop
= mut
->get_mds_stamp();
2240 mut
->add_projected_inode(pin
);
2241 lsi
.push_front(pin
);
2243 pin
->pre_cow_old_inode(); // avoid cow mayhem!
2245 inode_t
*pi
= pin
->project_inode();
2246 pi
->version
= pin
->pre_dirty();
2249 if (do_parent_mtime
|| linkunlink
) {
2250 dout(20) << "predirty_journal_parents add_delta " << pf
->fragstat
<< dendl
;
2251 dout(20) << "predirty_journal_parents - " << pf
->accounted_fragstat
<< dendl
;
2252 bool touched_mtime
= false, touched_chattr
= false;
2253 pi
->dirstat
.add_delta(pf
->fragstat
, pf
->accounted_fragstat
, &touched_mtime
, &touched_chattr
);
2254 pf
->accounted_fragstat
= pf
->fragstat
;
2256 pi
->mtime
= pi
->ctime
= pi
->dirstat
.mtime
;
2258 pi
->change_attr
= pi
->dirstat
.change_attr
;
2259 dout(20) << "predirty_journal_parents gives " << pi
->dirstat
<< " on " << *pin
<< dendl
;
2261 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2262 if (pi
->dirstat
.size() < 0)
2263 assert(!"negative dirstat size" == g_conf
->mds_verify_scatter
);
2264 if (pi
->dirstat
.size() != pf
->fragstat
.size()) {
2265 mds
->clog
->error() << "unmatched fragstat size on single dirfrag "
2266 << parent
->dirfrag() << ", inode has " << pi
->dirstat
2267 << ", dirfrag has " << pf
->fragstat
;
2269 // trust the dirfrag for now
2270 pi
->dirstat
= pf
->fragstat
;
2272 assert(!"unmatched fragstat size" == g_conf
->mds_verify_scatter
);
2278 * the rule here is to follow the _oldest_ parent with dirty rstat
2279 * data. if we don't propagate all data, we add ourselves to the
2280 * nudge list. that way all rstat data will (eventually) get
2281 * pushed up the tree.
2283 * actually, no. for now, silently drop rstats for old parents. we need
2284 * hard link backpointers to do the above properly.
2290 parentdn
= pin
->get_projected_parent_dn();
2294 dout(10) << "predirty_journal_parents frag->inode on " << *parent
<< dendl
;
2296 // first, if the frag is stale, bring it back in sync.
2297 parent
->resync_accounted_rstat();
2299 if (g_conf
->mds_snap_rstat
) {
2300 for (compact_map
<snapid_t
,old_rstat_t
>::iterator p
= parent
->dirty_old_rstat
.begin();
2301 p
!= parent
->dirty_old_rstat
.end();
2303 project_rstat_frag_to_inode(p
->second
.rstat
, p
->second
.accounted_rstat
, p
->second
.first
,
2304 p
->first
, pin
, true);//false);
2306 parent
->dirty_old_rstat
.clear();
2307 project_rstat_frag_to_inode(pf
->rstat
, pf
->accounted_rstat
, parent
->first
, CEPH_NOSNAP
, pin
, true);//false);
2309 pf
->accounted_rstat
= pf
->rstat
;
2311 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2312 if (pi
->rstat
.rbytes
!= pf
->rstat
.rbytes
) {
2313 mds
->clog
->error() << "unmatched rstat rbytes on single dirfrag "
2314 << parent
->dirfrag() << ", inode has " << pi
->rstat
2315 << ", dirfrag has " << pf
->rstat
;
2317 // trust the dirfrag for now
2318 pi
->rstat
= pf
->rstat
;
2320 assert(!"unmatched rstat rbytes" == g_conf
->mds_verify_scatter
);
2324 parent
->check_rstats();
2325 broadcast_quota_to_client(pin
);
2328 parent
= parentdn
->get_dir();
2330 do_parent_mtime
= false;
2335 // now, stick it in the blob
2337 assert(parent
->is_auth());
2338 blob
->add_dir_context(parent
);
2339 blob
->add_dir(parent
, true);
2340 for (list
<CInode
*>::iterator p
= lsi
.begin();
2344 journal_dirty_inode(mut
.get(), blob
, cur
);
2353 // ===================================
2358 * some handlers for master requests with slaves. we need to make
2359 * sure slaves journal commits before we forget we mastered them and
2360 * remove them from the uncommitted_masters map (used during recovery
2361 * to commit|abort slaves).
2363 struct C_MDC_CommittedMaster
: public MDCacheLogContext
{
2365 C_MDC_CommittedMaster(MDCache
*s
, metareqid_t r
) : MDCacheLogContext(s
), reqid(r
) {}
2366 void finish(int r
) override
{
2367 mdcache
->_logged_master_commit(reqid
);
2371 void MDCache::log_master_commit(metareqid_t reqid
)
2373 dout(10) << "log_master_commit " << reqid
<< dendl
;
2374 uncommitted_masters
[reqid
].committing
= true;
2375 mds
->mdlog
->start_submit_entry(new ECommitted(reqid
),
2376 new C_MDC_CommittedMaster(this, reqid
));
2379 void MDCache::_logged_master_commit(metareqid_t reqid
)
2381 dout(10) << "_logged_master_commit " << reqid
<< dendl
;
2382 assert(uncommitted_masters
.count(reqid
));
2383 uncommitted_masters
[reqid
].ls
->uncommitted_masters
.erase(reqid
);
2384 mds
->queue_waiters(uncommitted_masters
[reqid
].waiters
);
2385 uncommitted_masters
.erase(reqid
);
2390 void MDCache::committed_master_slave(metareqid_t r
, mds_rank_t from
)
2392 dout(10) << "committed_master_slave mds." << from
<< " on " << r
<< dendl
;
2393 assert(uncommitted_masters
.count(r
));
2394 uncommitted_masters
[r
].slaves
.erase(from
);
2395 if (!uncommitted_masters
[r
].recovering
&& uncommitted_masters
[r
].slaves
.empty())
2396 log_master_commit(r
);
2399 void MDCache::logged_master_update(metareqid_t reqid
)
2401 dout(10) << "logged_master_update " << reqid
<< dendl
;
2402 assert(uncommitted_masters
.count(reqid
));
2403 uncommitted_masters
[reqid
].safe
= true;
2404 if (pending_masters
.count(reqid
)) {
2405 pending_masters
.erase(reqid
);
2406 if (pending_masters
.empty())
2407 process_delayed_resolve();
2412 * Master may crash after receiving all slaves' commit acks, but before journalling
2413 * the final commit. Slaves may crash after journalling the slave commit, but before
2414 * sending commit ack to the master. Commit masters with no uncommitted slave when
2417 void MDCache::finish_committed_masters()
2419 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
2420 p
!= uncommitted_masters
.end();
2422 p
->second
.recovering
= false;
2423 if (!p
->second
.committing
&& p
->second
.slaves
.empty()) {
2424 dout(10) << "finish_committed_masters " << p
->first
<< dendl
;
2425 log_master_commit(p
->first
);
2431 * at end of resolve... we must journal a commit|abort for all slave
2432 * updates, before moving on.
2434 * this is so that the master can safely journal ECommitted on ops it
2435 * masters when it reaches up:active (all other recovering nodes must
2436 * complete resolve before that happens).
2438 struct C_MDC_SlaveCommit
: public MDCacheLogContext
{
2441 C_MDC_SlaveCommit(MDCache
*c
, int f
, metareqid_t r
) : MDCacheLogContext(c
), from(f
), reqid(r
) {}
2442 void finish(int r
) override
{
2443 mdcache
->_logged_slave_commit(from
, reqid
);
2447 void MDCache::_logged_slave_commit(mds_rank_t from
, metareqid_t reqid
)
2449 dout(10) << "_logged_slave_commit from mds." << from
<< " " << reqid
<< dendl
;
2452 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(reqid
, 0, MMDSSlaveRequest::OP_COMMITTED
);
2453 mds
->send_message_mds(req
, from
);
2461 // ====================================================================
2462 // import map, recovery
2464 void MDCache::_move_subtree_map_bound(dirfrag_t df
, dirfrag_t oldparent
, dirfrag_t newparent
,
2465 map
<dirfrag_t
,vector
<dirfrag_t
> >& subtrees
)
2467 if (subtrees
.count(oldparent
)) {
2468 vector
<dirfrag_t
>& v
= subtrees
[oldparent
];
2469 dout(10) << " removing " << df
<< " from " << oldparent
<< " bounds " << v
<< dendl
;
2470 for (vector
<dirfrag_t
>::iterator it
= v
.begin(); it
!= v
.end(); ++it
)
2476 if (subtrees
.count(newparent
)) {
2477 vector
<dirfrag_t
>& v
= subtrees
[newparent
];
2478 dout(10) << " adding " << df
<< " to " << newparent
<< " bounds " << v
<< dendl
;
2483 ESubtreeMap
*MDCache::create_subtree_map()
2485 dout(10) << "create_subtree_map " << num_subtrees() << " subtrees, "
2486 << num_subtrees_fullauth() << " fullauth"
2491 ESubtreeMap
*le
= new ESubtreeMap();
2492 mds
->mdlog
->_start_entry(le
);
2494 map
<dirfrag_t
, CDir
*> dirs_to_add
;
2497 CDir
* mydir
= myin
->get_dirfrag(frag_t());
2498 dirs_to_add
[mydir
->dirfrag()] = mydir
;
2501 // include all auth subtrees, and their bounds.
2502 // and a spanning tree to tie it to the root.
2503 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
2504 p
!= subtrees
.end();
2506 CDir
*dir
= p
->first
;
2508 // journal subtree as "ours" if we are
2511 // me, !me (may be importing and ambiguous!)
2515 if (dir
->get_dir_auth().first
!= mds
->get_nodeid())
2518 if (migrator
->is_ambiguous_import(dir
->dirfrag()) ||
2519 my_ambiguous_imports
.count(dir
->dirfrag())) {
2520 dout(15) << " ambig subtree " << *dir
<< dendl
;
2521 le
->ambiguous_subtrees
.insert(dir
->dirfrag());
2523 dout(15) << " subtree " << *dir
<< dendl
;
2526 dirs_to_add
[dir
->dirfrag()] = dir
;
2527 le
->subtrees
[dir
->dirfrag()].clear();
2531 for (set
<CDir
*>::iterator q
= p
->second
.begin();
2532 q
!= p
->second
.end();
2535 dout(15) << " subtree bound " << *bound
<< dendl
;
2536 dirs_to_add
[bound
->dirfrag()] = bound
;
2537 le
->subtrees
[dir
->dirfrag()].push_back(bound
->dirfrag());
2541 // apply projected renames
2542 for (map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.begin();
2543 p
!= projected_subtree_renames
.end();
2545 for (list
<pair
<CDir
*,CDir
*> >::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
2546 CInode
*diri
= p
->first
;
2547 CDir
*olddir
= q
->first
;
2548 CDir
*newdir
= q
->second
;
2549 dout(10) << " adjusting for projected rename of " << *diri
<< " to " << *newdir
<< dendl
;
2552 diri
->get_dirfrags(dfls
);
2553 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
2555 dout(10) << "dirfrag " << dir
->dirfrag() << " " << *dir
<< dendl
;
2556 CDir
*oldparent
= get_projected_subtree_root(olddir
);
2557 dout(10) << " old parent " << oldparent
->dirfrag() << " " << *oldparent
<< dendl
;
2558 CDir
*newparent
= get_projected_subtree_root(newdir
);
2559 dout(10) << " new parent " << newparent
->dirfrag() << " " << *newparent
<< dendl
;
2561 if (oldparent
== newparent
) {
2562 dout(10) << "parent unchanged for " << dir
->dirfrag() << " at "
2563 << oldparent
->dirfrag() << dendl
;
2567 if (dir
->is_subtree_root()) {
2568 if (le
->subtrees
.count(newparent
->dirfrag()) &&
2569 oldparent
->get_dir_auth() != newparent
->get_dir_auth())
2570 dirs_to_add
[dir
->dirfrag()] = dir
;
2571 // children are fine. change parent.
2572 _move_subtree_map_bound(dir
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2577 if (oldparent
->get_dir_auth() != newparent
->get_dir_auth()) {
2578 dout(10) << " creating subtree for " << dir
->dirfrag() << dendl
;
2579 // if oldparent is auth, subtree is mine; include it.
2580 if (le
->subtrees
.count(oldparent
->dirfrag())) {
2581 dirs_to_add
[dir
->dirfrag()] = dir
;
2582 le
->subtrees
[dir
->dirfrag()].clear();
2584 // if newparent is auth, subtree is a new bound
2585 if (le
->subtrees
.count(newparent
->dirfrag())) {
2586 dirs_to_add
[dir
->dirfrag()] = dir
;
2587 le
->subtrees
[newparent
->dirfrag()].push_back(dir
->dirfrag()); // newparent is auth; new bound
2592 // see if any old bounds move to the new parent.
2593 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
2594 p
!= subtrees
[oldparent
].end();
2597 if (dir
->contains(bound
->get_parent_dir()))
2598 _move_subtree_map_bound(bound
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2606 // simplify the journaled map. our in memory map may have more
2607 // subtrees than needed due to migrations that are just getting
2608 // started or just completing. but on replay, the "live" map will
2609 // be simple and we can do a straight comparison.
2610 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= le
->subtrees
.begin(); p
!= le
->subtrees
.end(); ++p
) {
2611 if (le
->ambiguous_subtrees
.count(p
->first
))
2614 while (i
< p
->second
.size()) {
2615 dirfrag_t b
= p
->second
[i
];
2616 if (le
->subtrees
.count(b
) &&
2617 le
->ambiguous_subtrees
.count(b
) == 0) {
2618 vector
<dirfrag_t
>& bb
= le
->subtrees
[b
];
2619 dout(10) << "simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2620 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2621 p
->second
.push_back(*r
);
2622 dirs_to_add
.erase(b
);
2623 le
->subtrees
.erase(b
);
2624 p
->second
.erase(p
->second
.begin() + i
);
2631 for (auto p
: dirs_to_add
) {
2632 CDir
*dir
= p
.second
;
2633 le
->metablob
.add_dir_context(dir
, EMetaBlob::TO_ROOT
);
2634 le
->metablob
.add_dir(dir
, false);
2637 dout(15) << " subtrees " << le
->subtrees
<< dendl
;
2638 dout(15) << " ambiguous_subtrees " << le
->ambiguous_subtrees
<< dendl
;
2640 //le->metablob.print(cout);
2641 le
->expire_pos
= mds
->mdlog
->journaler
->get_expire_pos();
2645 void MDCache::dump_resolve_status(Formatter
*f
) const
2647 f
->open_object_section("resolve_status");
2648 f
->dump_stream("resolve_gather") << resolve_gather
;
2649 f
->dump_stream("resolve_ack_gather") << resolve_gather
;
2653 void MDCache::resolve_start(MDSInternalContext
*resolve_done_
)
2655 dout(10) << "resolve_start" << dendl
;
2656 assert(!resolve_done
);
2657 resolve_done
.reset(resolve_done_
);
2659 if (mds
->mdsmap
->get_root() != mds
->get_nodeid()) {
2660 // if we don't have the root dir, adjust it to UNKNOWN. during
2661 // resolve we want mds0 to explicit claim the portion of it that
2662 // it owns, so that anything beyond its bounds get left as
2664 CDir
*rootdir
= root
->get_dirfrag(frag_t());
2666 adjust_subtree_auth(rootdir
, CDIR_AUTH_UNKNOWN
);
2668 resolve_gather
= recovery_set
;
2671 void MDCache::send_resolves()
2673 send_slave_resolves();
2674 if (!resolve_ack_gather
.empty()) {
2675 dout(10) << "send_resolves still waiting for resolve ack from ("
2676 << resolve_ack_gather
<< ")" << dendl
;
2679 if (!need_resolve_rollback
.empty()) {
2680 dout(10) << "send_resolves still waiting for rollback to commit on ("
2681 << need_resolve_rollback
<< ")" << dendl
;
2684 send_subtree_resolves();
2687 void MDCache::send_slave_resolves()
2689 dout(10) << "send_slave_resolves" << dendl
;
2691 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2693 if (mds
->is_resolve()) {
2694 for (map
<mds_rank_t
, map
<metareqid_t
, MDSlaveUpdate
*> >::iterator p
= uncommitted_slave_updates
.begin();
2695 p
!= uncommitted_slave_updates
.end();
2697 resolves
[p
->first
] = new MMDSResolve
;
2698 for (map
<metareqid_t
, MDSlaveUpdate
*>::iterator q
= p
->second
.begin();
2699 q
!= p
->second
.end();
2701 dout(10) << " including uncommitted " << q
->first
<< dendl
;
2702 resolves
[p
->first
]->add_slave_request(q
->first
, false);
2706 set
<mds_rank_t
> resolve_set
;
2707 mds
->mdsmap
->get_mds_set(resolve_set
, MDSMap::STATE_RESOLVE
);
2708 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2709 p
!= active_requests
.end();
2711 MDRequestRef
& mdr
= p
->second
;
2712 if (!mdr
->is_slave())
2714 if (!mdr
->slave_did_prepare() && !mdr
->committing
) {
2717 mds_rank_t master
= mdr
->slave_to_mds
;
2718 if (resolve_set
.count(master
) || is_ambiguous_slave_update(p
->first
, master
)) {
2719 dout(10) << " including uncommitted " << *mdr
<< dendl
;
2720 if (!resolves
.count(master
))
2721 resolves
[master
] = new MMDSResolve
;
2722 if (!mdr
->committing
&&
2723 mdr
->has_more() && mdr
->more()->is_inode_exporter
) {
2724 // re-send cap exports
2725 CInode
*in
= mdr
->more()->rename_inode
;
2726 map
<client_t
, Capability::Export
> cap_map
;
2727 in
->export_client_caps(cap_map
);
2729 ::encode(in
->ino(), bl
);
2730 ::encode(cap_map
, bl
);
2731 resolves
[master
]->add_slave_request(p
->first
, bl
);
2733 resolves
[master
]->add_slave_request(p
->first
, mdr
->committing
);
2739 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2740 p
!= resolves
.end();
2742 dout(10) << "sending slave resolve to mds." << p
->first
<< dendl
;
2743 mds
->send_message_mds(p
->second
, p
->first
);
2744 resolve_ack_gather
.insert(p
->first
);
2748 void MDCache::send_subtree_resolves()
2750 dout(10) << "send_subtree_resolves" << dendl
;
2752 if (migrator
->is_exporting() || migrator
->is_importing()) {
2753 dout(7) << "send_subtree_resolves waiting, imports/exports still in progress" << dendl
;
2754 migrator
->show_importing();
2755 migrator
->show_exporting();
2756 resolves_pending
= true;
2760 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2761 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
2762 p
!= recovery_set
.end();
2764 if (*p
== mds
->get_nodeid())
2766 if (mds
->is_resolve() || mds
->mdsmap
->is_resolve(*p
))
2767 resolves
[*p
] = new MMDSResolve
;
2770 map
<dirfrag_t
, vector
<dirfrag_t
> > my_subtrees
;
2771 map
<dirfrag_t
, vector
<dirfrag_t
> > my_ambig_imports
;
2774 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
2775 p
!= subtrees
.end();
2777 CDir
*dir
= p
->first
;
2779 // only our subtrees
2780 if (dir
->authority().first
!= mds
->get_nodeid())
2783 if (mds
->is_resolve() && my_ambiguous_imports
.count(dir
->dirfrag()))
2784 continue; // we'll add it below
2786 if (migrator
->is_ambiguous_import(dir
->dirfrag())) {
2787 // ambiguous (mid-import)
2789 get_subtree_bounds(dir
, bounds
);
2790 vector
<dirfrag_t
> dfls
;
2791 for (set
<CDir
*>::iterator q
= bounds
.begin(); q
!= bounds
.end(); ++q
)
2792 dfls
.push_back((*q
)->dirfrag());
2794 my_ambig_imports
[dir
->dirfrag()] = dfls
;
2795 dout(10) << " ambig " << dir
->dirfrag() << " " << dfls
<< dendl
;
2798 for (map
<mds_rank_t
, MMDSResolve
*>::iterator q
= resolves
.begin();
2799 q
!= resolves
.end();
2801 resolves
[q
->first
]->add_subtree(dir
->dirfrag());
2803 vector
<dirfrag_t
> dfls
;
2804 for (set
<CDir
*>::iterator q
= subtrees
[dir
].begin();
2805 q
!= subtrees
[dir
].end();
2808 dfls
.push_back(bound
->dirfrag());
2811 my_subtrees
[dir
->dirfrag()] = dfls
;
2812 dout(10) << " claim " << dir
->dirfrag() << " " << dfls
<< dendl
;
2817 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
2818 p
!= my_ambiguous_imports
.end();
2820 my_ambig_imports
[p
->first
] = p
->second
;
2821 dout(10) << " ambig " << p
->first
<< " " << p
->second
<< dendl
;
2824 // simplify the claimed subtree.
2825 for (auto p
= my_subtrees
.begin(); p
!= my_subtrees
.end(); ++p
) {
2827 while (i
< p
->second
.size()) {
2828 dirfrag_t b
= p
->second
[i
];
2829 if (my_subtrees
.count(b
)) {
2830 vector
<dirfrag_t
>& bb
= my_subtrees
[b
];
2831 dout(10) << " simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2832 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2833 p
->second
.push_back(*r
);
2834 my_subtrees
.erase(b
);
2835 p
->second
.erase(p
->second
.begin() + i
);
2843 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2844 p
!= resolves
.end();
2846 MMDSResolve
* m
= p
->second
;
2847 m
->subtrees
= my_subtrees
;
2848 m
->ambiguous_imports
= my_ambig_imports
;
2849 dout(10) << "sending subtee resolve to mds." << p
->first
<< dendl
;
2850 mds
->send_message_mds(m
, p
->first
);
2852 resolves_pending
= false;
2855 void MDCache::handle_mds_failure(mds_rank_t who
)
2857 dout(7) << "handle_mds_failure mds." << who
<< dendl
;
2859 dout(1) << "handle_mds_failure mds." << who
<< " : recovery peers are " << recovery_set
<< dendl
;
2861 resolve_gather
.insert(who
);
2862 discard_delayed_resolve(who
);
2863 ambiguous_slave_updates
.erase(who
);
2865 rejoin_gather
.insert(who
);
2866 rejoin_sent
.erase(who
); // i need to send another
2867 rejoin_ack_sent
.erase(who
); // i need to send another
2868 rejoin_ack_gather
.erase(who
); // i'll need/get another.
2870 dout(10) << " resolve_gather " << resolve_gather
<< dendl
;
2871 dout(10) << " resolve_ack_gather " << resolve_ack_gather
<< dendl
;
2872 dout(10) << " rejoin_sent " << rejoin_sent
<< dendl
;
2873 dout(10) << " rejoin_gather " << rejoin_gather
<< dendl
;
2874 dout(10) << " rejoin_ack_gather " << rejoin_ack_gather
<< dendl
;
2877 // tell the migrator too.
2878 migrator
->handle_mds_failure_or_stop(who
);
2880 // tell the balancer too.
2881 mds
->balancer
->handle_mds_failure(who
);
2883 // clean up any requests slave to/from this node
2884 list
<MDRequestRef
> finish
;
2885 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2886 p
!= active_requests
.end();
2888 MDRequestRef
& mdr
= p
->second
;
2889 // slave to the failed node?
2890 if (mdr
->slave_to_mds
== who
) {
2891 if (mdr
->slave_did_prepare()) {
2892 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2893 if (is_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
))
2894 remove_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2896 if (!mdr
->more()->waiting_on_slave
.empty()) {
2897 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2898 // will rollback, no need to wait
2899 if (mdr
->slave_request
) {
2900 mdr
->slave_request
->put();
2901 mdr
->slave_request
= 0;
2903 mdr
->more()->waiting_on_slave
.clear();
2905 } else if (!mdr
->committing
) {
2906 dout(10) << " slave request " << *mdr
<< " has no prepare, finishing up" << dendl
;
2907 if (mdr
->slave_request
|| mdr
->slave_rolling_back())
2908 mdr
->aborted
= true;
2910 finish
.push_back(mdr
);
2914 if (mdr
->is_slave() && mdr
->slave_did_prepare()) {
2915 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2916 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2917 dout(10) << " slave request " << *mdr
<< " no longer need rename notity ack from mds."
2919 mdr
->more()->waiting_on_slave
.erase(who
);
2920 if (mdr
->more()->waiting_on_slave
.empty() && mdr
->slave_request
)
2921 mds
->queue_waiter(new C_MDS_RetryRequest(this, mdr
));
2924 if (mdr
->more()->srcdn_auth_mds
== who
&&
2925 mds
->mdsmap
->is_clientreplay_or_active_or_stopping(mdr
->slave_to_mds
)) {
2926 // rename srcdn's auth mds failed, resolve even I'm a survivor.
2927 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2928 add_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2930 } else if (mdr
->slave_request
) {
2931 MMDSSlaveRequest
*slave_req
= mdr
->slave_request
;
2932 // FIXME: Slave rename request can arrive after we notice mds failure.
2933 // This can cause mds to crash (does not affect integrity of FS).
2934 if (slave_req
->get_op() == MMDSSlaveRequest::OP_RENAMEPREP
&&
2935 slave_req
->srcdn_auth
== who
)
2936 slave_req
->mark_interrupted();
2939 // failed node is slave?
2940 if (mdr
->is_master() && !mdr
->committing
) {
2941 if (mdr
->more()->srcdn_auth_mds
== who
) {
2942 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2943 << who
<< " to recover" << dendl
;
2944 assert(mdr
->more()->witnessed
.count(who
) == 0);
2945 if (mdr
->more()->is_ambiguous_auth
)
2946 mdr
->clear_ambiguous_auth();
2947 // rename srcdn's auth mds failed, all witnesses will rollback
2948 mdr
->more()->witnessed
.clear();
2949 pending_masters
.erase(p
->first
);
2952 if (mdr
->more()->witnessed
.count(who
)) {
2953 mds_rank_t srcdn_auth
= mdr
->more()->srcdn_auth_mds
;
2954 if (srcdn_auth
>= 0 && mdr
->more()->waiting_on_slave
.count(srcdn_auth
)) {
2955 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2956 << mdr
->more()->srcdn_auth_mds
<< " to reply" << dendl
;
2957 // waiting for the slave (rename srcdn's auth mds), delay sending resolve ack
2958 // until either the request is committing or the slave also fails.
2959 assert(mdr
->more()->waiting_on_slave
.size() == 1);
2960 pending_masters
.insert(p
->first
);
2962 dout(10) << " master request " << *mdr
<< " no longer witnessed by slave mds."
2963 << who
<< " to recover" << dendl
;
2964 if (srcdn_auth
>= 0)
2965 assert(mdr
->more()->witnessed
.count(srcdn_auth
) == 0);
2967 // discard this peer's prepare (if any)
2968 mdr
->more()->witnessed
.erase(who
);
2972 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2973 dout(10) << " master request " << *mdr
<< " waiting for slave mds." << who
2974 << " to recover" << dendl
;
2975 // retry request when peer recovers
2976 mdr
->more()->waiting_on_slave
.erase(who
);
2977 if (mdr
->more()->waiting_on_slave
.empty())
2978 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(this, mdr
));
2981 if (mdr
->locking
&& mdr
->locking_target_mds
== who
)
2982 mdr
->finish_locking(mdr
->locking
);
2986 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
2987 p
!= uncommitted_masters
.end();
2989 // The failed MDS may have already committed the slave update
2990 if (p
->second
.slaves
.count(who
)) {
2991 p
->second
.recovering
= true;
2992 p
->second
.slaves
.erase(who
);
2996 while (!finish
.empty()) {
2997 dout(10) << "cleaning up slave request " << *finish
.front() << dendl
;
2998 request_finish(finish
.front());
3002 kick_find_ino_peers(who
);
3003 kick_open_ino_peers(who
);
3005 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
3006 p
!= fragments
.end(); ) {
3007 dirfrag_t df
= p
->first
;
3008 fragment_info_t
& info
= p
->second
;
3010 if (info
.is_fragmenting())
3012 dout(10) << "cancelling fragment " << df
<< " bit " << info
.bits
<< dendl
;
3014 info
.dirs
.swap(dirs
);
3015 fragments
.erase(df
);
3016 fragment_unmark_unfreeze_dirs(dirs
);
3019 // MDCache::shutdown_export_strays() always exports strays to mds.0
3020 if (who
== mds_rank_t(0))
3021 shutdown_exported_strays
.clear();
3027 * handle_mds_recovery - called on another node's transition
3028 * from resolve -> active.
3030 void MDCache::handle_mds_recovery(mds_rank_t who
)
3032 dout(7) << "handle_mds_recovery mds." << who
<< dendl
;
3034 // exclude all discover waiters. kick_discovers() will do the job
3035 static const uint64_t i_mask
= CInode::WAIT_ANY_MASK
& ~CInode::WAIT_DIR
;
3036 static const uint64_t d_mask
= CDir::WAIT_ANY_MASK
& ~CDir::WAIT_DENTRY
;
3038 list
<MDSInternalContextBase
*> waiters
;
3040 // wake up any waiters in their subtrees
3041 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3042 p
!= subtrees
.end();
3044 CDir
*dir
= p
->first
;
3046 if (dir
->authority().first
!= who
||
3047 dir
->authority().second
== mds
->get_nodeid())
3049 assert(!dir
->is_auth());
3055 while (!q
.empty()) {
3056 CDir
*d
= q
.front();
3058 d
->take_waiting(d_mask
, waiters
);
3060 // inode waiters too
3061 for (CDir::map_t::iterator p
= d
->items
.begin();
3062 p
!= d
->items
.end();
3064 CDentry
*dn
= p
->second
;
3065 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3066 if (dnl
->is_primary()) {
3067 dnl
->get_inode()->take_waiting(i_mask
, waiters
);
3071 dnl
->get_inode()->get_dirfrags(ls
);
3072 for (list
<CDir
*>::iterator p
= ls
.begin();
3076 if (!subdir
->is_subtree_root())
3077 q
.push_back(subdir
);
3084 kick_open_ino_peers(who
);
3085 kick_find_ino_peers(who
);
3088 mds
->queue_waiters(waiters
);
3091 void MDCache::set_recovery_set(set
<mds_rank_t
>& s
)
3093 dout(7) << "set_recovery_set " << s
<< dendl
;
3099 * during resolve state, we share resolves to determine who
3100 * is authoritative for which trees. we expect to get an resolve
3101 * from _everyone_ in the recovery_set (the mds cluster at the time of
3102 * the first failure).
3104 * This functions puts the passed message before returning
3106 void MDCache::handle_resolve(MMDSResolve
*m
)
3108 dout(7) << "handle_resolve from " << m
->get_source() << dendl
;
3109 mds_rank_t from
= mds_rank_t(m
->get_source().num());
3111 if (mds
->get_state() < MDSMap::STATE_RESOLVE
) {
3112 if (mds
->get_want_state() == CEPH_MDS_STATE_RESOLVE
) {
3113 mds
->wait_for_resolve(new C_MDS_RetryMessage(mds
, m
));
3116 // wait until we reach the resolve stage!
3121 discard_delayed_resolve(from
);
3123 // ambiguous slave requests?
3124 if (!m
->slave_requests
.empty()) {
3125 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3126 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3127 if (uncommitted_masters
.count(p
->first
) && !uncommitted_masters
[p
->first
].safe
) {
3128 assert(!p
->second
.committing
);
3129 pending_masters
.insert(p
->first
);
3133 if (!pending_masters
.empty()) {
3134 dout(10) << " still have pending updates, delay processing slave resolve" << dendl
;
3135 delayed_resolve
[from
] = m
;
3140 MMDSResolveAck
*ack
= new MMDSResolveAck
;
3141 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3142 if (uncommitted_masters
.count(p
->first
)) { //mds->sessionmap.have_completed_request(p->first)) {
3144 if (p
->second
.committing
) {
3145 // already committing, waiting for the OP_COMMITTED slave reply
3146 dout(10) << " already committing slave request " << *p
<< " noop "<< dendl
;
3148 dout(10) << " ambiguous slave request " << *p
<< " will COMMIT" << dendl
;
3149 ack
->add_commit(p
->first
);
3151 uncommitted_masters
[p
->first
].slaves
.insert(from
); // wait for slave OP_COMMITTED before we log ECommitted
3153 if (p
->second
.inode_caps
.length() > 0) {
3154 // slave wants to export caps (rename)
3155 assert(mds
->is_resolve());
3158 map
<client_t
,Capability::Export
> cap_exports
;
3159 bufferlist::iterator q
= p
->second
.inode_caps
.begin();
3161 ::decode(cap_exports
, q
);
3163 assert(get_inode(ino
));
3165 for (map
<client_t
,Capability::Export
>::iterator q
= cap_exports
.begin();
3166 q
!= cap_exports
.end();
3168 Capability::Import
& im
= rejoin_imported_caps
[from
][ino
][q
->first
];
3169 im
.cap_id
= ++last_cap_id
; // assign a new cap ID
3171 im
.mseq
= q
->second
.mseq
;
3174 // will process these caps in rejoin stage
3175 rejoin_slave_exports
[ino
].first
= from
;
3176 rejoin_slave_exports
[ino
].second
.swap(cap_exports
);
3178 // send information of imported caps back to slave
3179 ::encode(rejoin_imported_caps
[from
][ino
], ack
->commit
[p
->first
]);
3183 dout(10) << " ambiguous slave request " << *p
<< " will ABORT" << dendl
;
3184 assert(!p
->second
.committing
);
3185 ack
->add_abort(p
->first
);
3188 mds
->send_message(ack
, m
->get_connection());
3193 if (!resolve_ack_gather
.empty() || !need_resolve_rollback
.empty()) {
3194 dout(10) << "delay processing subtree resolve" << dendl
;
3195 delayed_resolve
[from
] = m
;
3199 bool survivor
= false;
3200 // am i a surviving ambiguous importer?
3201 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3203 // check for any import success/failure (from this node)
3204 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
3205 while (p
!= my_ambiguous_imports
.end()) {
3206 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator next
= p
;
3208 CDir
*dir
= get_dirfrag(p
->first
);
3210 dout(10) << "checking ambiguous import " << *dir
<< dendl
;
3211 if (migrator
->is_importing(dir
->dirfrag()) &&
3212 migrator
->get_import_peer(dir
->dirfrag()) == from
) {
3213 assert(migrator
->get_import_state(dir
->dirfrag()) == Migrator::IMPORT_ACKING
);
3215 // check if sender claims the subtree
3216 bool claimed_by_sender
= false;
3217 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= m
->subtrees
.begin();
3218 q
!= m
->subtrees
.end();
3220 // an ambiguous import won't race with a refragmentation; it's appropriate to force here.
3221 CDir
*base
= get_force_dirfrag(q
->first
, false);
3222 if (!base
|| !base
->contains(dir
))
3223 continue; // base not dir or an ancestor of dir, clearly doesn't claim dir.
3227 get_force_dirfrag_bound_set(q
->second
, bounds
);
3228 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
3230 if (bound
->contains(dir
)) {
3231 inside
= false; // nope, bound is dir or parent of dir, not inside.
3236 claimed_by_sender
= true;
3239 my_ambiguous_imports
.erase(p
); // no longer ambiguous.
3240 if (claimed_by_sender
) {
3241 dout(7) << "ambiguous import failed on " << *dir
<< dendl
;
3242 migrator
->import_reverse(dir
);
3244 dout(7) << "ambiguous import succeeded on " << *dir
<< dendl
;
3245 migrator
->import_finish(dir
, true);
3252 // update my dir_auth values
3253 // need to do this on recoverying nodes _and_ bystanders (to resolve ambiguous
3254 // migrations between other nodes)
3255 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->subtrees
.begin();
3256 pi
!= m
->subtrees
.end();
3258 dout(10) << "peer claims " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3259 CDir
*dir
= get_force_dirfrag(pi
->first
, !survivor
);
3262 adjust_bounded_subtree_auth(dir
, pi
->second
, from
);
3263 try_subtree_merge(dir
);
3268 // note ambiguous imports too
3269 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->ambiguous_imports
.begin();
3270 pi
!= m
->ambiguous_imports
.end();
3272 dout(10) << "noting ambiguous import on " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3273 other_ambiguous_imports
[from
][pi
->first
].swap( pi
->second
);
3276 // did i get them all?
3277 resolve_gather
.erase(from
);
3279 maybe_resolve_finish();
3284 void MDCache::process_delayed_resolve()
3286 dout(10) << "process_delayed_resolve" << dendl
;
3287 map
<mds_rank_t
, MMDSResolve
*> tmp
;
3288 tmp
.swap(delayed_resolve
);
3289 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= tmp
.begin(); p
!= tmp
.end(); ++p
)
3290 handle_resolve(p
->second
);
3293 void MDCache::discard_delayed_resolve(mds_rank_t who
)
3295 if (delayed_resolve
.count(who
)) {
3296 delayed_resolve
[who
]->put();
3297 delayed_resolve
.erase(who
);
3301 void MDCache::maybe_resolve_finish()
3303 assert(resolve_ack_gather
.empty());
3304 assert(need_resolve_rollback
.empty());
3306 if (!resolve_gather
.empty()) {
3307 dout(10) << "maybe_resolve_finish still waiting for resolves ("
3308 << resolve_gather
<< ")" << dendl
;
3312 dout(10) << "maybe_resolve_finish got all resolves+resolve_acks, done." << dendl
;
3313 disambiguate_my_imports();
3314 finish_committed_masters();
3317 assert(mds
->is_resolve());
3318 trim_unlinked_inodes();
3319 recalc_auth_bits(false);
3320 resolve_done
.release()->complete(0);
3322 maybe_send_pending_rejoins();
3326 /* This functions puts the passed message before returning */
3327 void MDCache::handle_resolve_ack(MMDSResolveAck
*ack
)
3329 dout(10) << "handle_resolve_ack " << *ack
<< " from " << ack
->get_source() << dendl
;
3330 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
3332 if (!resolve_ack_gather
.count(from
) ||
3333 mds
->mdsmap
->get_state(from
) < MDSMap::STATE_RESOLVE
) {
3338 if (ambiguous_slave_updates
.count(from
)) {
3339 assert(mds
->mdsmap
->is_clientreplay_or_active_or_stopping(from
));
3340 assert(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3343 for (map
<metareqid_t
, bufferlist
>::iterator p
= ack
->commit
.begin();
3344 p
!= ack
->commit
.end();
3346 dout(10) << " commit on slave " << p
->first
<< dendl
;
3348 if (ambiguous_slave_updates
.count(from
)) {
3349 remove_ambiguous_slave_update(p
->first
, from
);
3353 if (mds
->is_resolve()) {
3355 MDSlaveUpdate
*su
= get_uncommitted_slave_update(p
->first
, from
);
3359 mds
->mdlog
->start_submit_entry(new ESlaveUpdate(mds
->mdlog
, "unknown", p
->first
, from
,
3360 ESlaveUpdate::OP_COMMIT
, su
->origop
),
3361 new C_MDC_SlaveCommit(this, from
, p
->first
));
3362 mds
->mdlog
->flush();
3364 finish_uncommitted_slave_update(p
->first
, from
);
3366 MDRequestRef mdr
= request_get(p
->first
);
3367 // information about master imported caps
3368 if (p
->second
.length() > 0)
3369 mdr
->more()->inode_import
.claim(p
->second
);
3371 assert(mdr
->slave_request
== 0); // shouldn't be doing anything!
3372 request_finish(mdr
);
3376 for (vector
<metareqid_t
>::iterator p
= ack
->abort
.begin();
3377 p
!= ack
->abort
.end();
3379 dout(10) << " abort on slave " << *p
<< dendl
;
3381 if (mds
->is_resolve()) {
3382 MDSlaveUpdate
*su
= get_uncommitted_slave_update(*p
, from
);
3385 // perform rollback (and journal a rollback entry)
3386 // note: this will hold up the resolve a bit, until the rollback entries journal.
3387 MDRequestRef null_ref
;
3388 switch (su
->origop
) {
3389 case ESlaveUpdate::LINK
:
3390 mds
->server
->do_link_rollback(su
->rollback
, from
, null_ref
);
3392 case ESlaveUpdate::RENAME
:
3393 mds
->server
->do_rename_rollback(su
->rollback
, from
, null_ref
);
3395 case ESlaveUpdate::RMDIR
:
3396 mds
->server
->do_rmdir_rollback(su
->rollback
, from
, null_ref
);
3402 MDRequestRef mdr
= request_get(*p
);
3403 mdr
->aborted
= true;
3404 if (mdr
->slave_request
) {
3405 if (mdr
->slave_did_prepare()) // journaling slave prepare ?
3406 add_rollback(*p
, from
);
3408 request_finish(mdr
);
3413 if (!ambiguous_slave_updates
.count(from
))
3414 resolve_ack_gather
.erase(from
);
3415 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3416 send_subtree_resolves();
3417 process_delayed_resolve();
3423 void MDCache::add_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
, MDSlaveUpdate
*su
)
3425 assert(uncommitted_slave_updates
[master
].count(reqid
) == 0);
3426 uncommitted_slave_updates
[master
][reqid
] = su
;
3427 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
)
3428 uncommitted_slave_rename_olddir
[*p
]++;
3429 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
)
3430 uncommitted_slave_unlink
[*p
]++;
3433 void MDCache::finish_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3435 assert(uncommitted_slave_updates
[master
].count(reqid
));
3436 MDSlaveUpdate
* su
= uncommitted_slave_updates
[master
][reqid
];
3438 uncommitted_slave_updates
[master
].erase(reqid
);
3439 if (uncommitted_slave_updates
[master
].empty())
3440 uncommitted_slave_updates
.erase(master
);
3441 // discard the non-auth subtree we renamed out of
3442 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
) {
3444 map
<CInode
*, int>::iterator it
= uncommitted_slave_rename_olddir
.find(diri
);
3445 assert(it
!= uncommitted_slave_rename_olddir
.end());
3447 if (it
->second
== 0) {
3448 uncommitted_slave_rename_olddir
.erase(it
);
3450 diri
->get_dirfrags(ls
);
3451 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
3452 CDir
*root
= get_subtree_root(*q
);
3453 if (root
->get_dir_auth() == CDIR_AUTH_UNDEF
) {
3454 try_trim_non_auth_subtree(root
);
3460 assert(it
->second
> 0);
3462 // removed the inodes that were unlinked by slave update
3463 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
) {
3465 map
<CInode
*, int>::iterator it
= uncommitted_slave_unlink
.find(in
);
3466 assert(it
!= uncommitted_slave_unlink
.end());
3468 if (it
->second
== 0) {
3469 uncommitted_slave_unlink
.erase(it
);
3470 if (!in
->get_projected_parent_dn())
3471 mds
->mdcache
->remove_inode_recursive(in
);
3473 assert(it
->second
> 0);
3478 MDSlaveUpdate
* MDCache::get_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3481 MDSlaveUpdate
* su
= NULL
;
3482 if (uncommitted_slave_updates
.count(master
) &&
3483 uncommitted_slave_updates
[master
].count(reqid
)) {
3484 su
= uncommitted_slave_updates
[master
][reqid
];
3490 void MDCache::finish_rollback(metareqid_t reqid
) {
3491 assert(need_resolve_rollback
.count(reqid
));
3492 if (mds
->is_resolve())
3493 finish_uncommitted_slave_update(reqid
, need_resolve_rollback
[reqid
]);
3494 need_resolve_rollback
.erase(reqid
);
3495 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3496 send_subtree_resolves();
3497 process_delayed_resolve();
3501 void MDCache::disambiguate_other_imports()
3503 dout(10) << "disambiguate_other_imports" << dendl
;
3505 bool recovering
= !(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3506 // other nodes' ambiguous imports
3507 for (map
<mds_rank_t
, map
<dirfrag_t
, vector
<dirfrag_t
> > >::iterator p
= other_ambiguous_imports
.begin();
3508 p
!= other_ambiguous_imports
.end();
3510 mds_rank_t who
= p
->first
;
3511 dout(10) << "ambiguous imports for mds." << who
<< dendl
;
3513 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= p
->second
.begin();
3514 q
!= p
->second
.end();
3516 dout(10) << " ambiguous import " << q
->first
<< " bounds " << q
->second
<< dendl
;
3517 // an ambiguous import will not race with a refragmentation; it's appropriate to force here.
3518 CDir
*dir
= get_force_dirfrag(q
->first
, recovering
);
3521 if (dir
->is_ambiguous_auth() || // works for me_ambig or if i am a surviving bystander
3522 dir
->authority() == CDIR_AUTH_UNDEF
) { // resolving
3523 dout(10) << " mds." << who
<< " did import " << *dir
<< dendl
;
3524 adjust_bounded_subtree_auth(dir
, q
->second
, who
);
3525 try_subtree_merge(dir
);
3527 dout(10) << " mds." << who
<< " did not import " << *dir
<< dendl
;
3531 other_ambiguous_imports
.clear();
3534 void MDCache::disambiguate_my_imports()
3536 dout(10) << "disambiguate_my_imports" << dendl
;
3538 if (!mds
->is_resolve()) {
3539 assert(my_ambiguous_imports
.empty());
3543 disambiguate_other_imports();
3545 // my ambiguous imports
3546 mds_authority_t
me_ambig(mds
->get_nodeid(), mds
->get_nodeid());
3547 while (!my_ambiguous_imports
.empty()) {
3548 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= my_ambiguous_imports
.begin();
3550 CDir
*dir
= get_dirfrag(q
->first
);
3553 if (dir
->authority() != me_ambig
) {
3554 dout(10) << "ambiguous import auth known, must not be me " << *dir
<< dendl
;
3555 cancel_ambiguous_import(dir
);
3557 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, false));
3559 // subtree may have been swallowed by another node claiming dir
3561 CDir
*root
= get_subtree_root(dir
);
3563 dout(10) << " subtree root is " << *root
<< dendl
;
3564 assert(root
->dir_auth
.first
!= mds
->get_nodeid()); // no us!
3565 try_trim_non_auth_subtree(root
);
3567 dout(10) << "ambiguous import auth unclaimed, must be me " << *dir
<< dendl
;
3568 finish_ambiguous_import(q
->first
);
3569 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, true));
3572 assert(my_ambiguous_imports
.empty());
3573 mds
->mdlog
->flush();
3575 // verify all my subtrees are unambiguous!
3576 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3577 p
!= subtrees
.end();
3579 CDir
*dir
= p
->first
;
3580 if (dir
->is_ambiguous_dir_auth()) {
3581 dout(0) << "disambiguate_imports uh oh, dir_auth is still ambiguous for " << *dir
<< dendl
;
3583 assert(!dir
->is_ambiguous_dir_auth());
3590 void MDCache::add_ambiguous_import(dirfrag_t base
, const vector
<dirfrag_t
>& bounds
)
3592 assert(my_ambiguous_imports
.count(base
) == 0);
3593 my_ambiguous_imports
[base
] = bounds
;
3597 void MDCache::add_ambiguous_import(CDir
*base
, const set
<CDir
*>& bounds
)
3600 vector
<dirfrag_t
> binos
;
3601 for (set
<CDir
*>::iterator p
= bounds
.begin();
3604 binos
.push_back((*p
)->dirfrag());
3606 // note: this can get called twice if the exporter fails during recovery
3607 if (my_ambiguous_imports
.count(base
->dirfrag()))
3608 my_ambiguous_imports
.erase(base
->dirfrag());
3610 add_ambiguous_import(base
->dirfrag(), binos
);
3613 void MDCache::cancel_ambiguous_import(CDir
*dir
)
3615 dirfrag_t df
= dir
->dirfrag();
3616 assert(my_ambiguous_imports
.count(df
));
3617 dout(10) << "cancel_ambiguous_import " << df
3618 << " bounds " << my_ambiguous_imports
[df
]
3621 my_ambiguous_imports
.erase(df
);
3624 void MDCache::finish_ambiguous_import(dirfrag_t df
)
3626 assert(my_ambiguous_imports
.count(df
));
3627 vector
<dirfrag_t
> bounds
;
3628 bounds
.swap(my_ambiguous_imports
[df
]);
3629 my_ambiguous_imports
.erase(df
);
3631 dout(10) << "finish_ambiguous_import " << df
3632 << " bounds " << bounds
3634 CDir
*dir
= get_dirfrag(df
);
3637 // adjust dir_auth, import maps
3638 adjust_bounded_subtree_auth(dir
, bounds
, mds
->get_nodeid());
3639 try_subtree_merge(dir
);
3642 void MDCache::remove_inode_recursive(CInode
*in
)
3644 dout(10) << "remove_inode_recursive " << *in
<< dendl
;
3646 in
->get_dirfrags(ls
);
3647 list
<CDir
*>::iterator p
= ls
.begin();
3648 while (p
!= ls
.end()) {
3649 CDir
*subdir
= *p
++;
3651 dout(10) << " removing dirfrag " << subdir
<< dendl
;
3652 CDir::map_t::iterator q
= subdir
->items
.begin();
3653 while (q
!= subdir
->items
.end()) {
3654 CDentry
*dn
= q
->second
;
3656 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3657 if (dnl
->is_primary()) {
3658 CInode
*tin
= dnl
->get_inode();
3659 subdir
->unlink_inode(dn
, false);
3660 remove_inode_recursive(tin
);
3662 subdir
->remove_dentry(dn
);
3665 if (subdir
->is_subtree_root())
3666 remove_subtree(subdir
);
3667 in
->close_dirfrag(subdir
->dirfrag().frag
);
3672 bool MDCache::expire_recursive(
3674 map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
3676 assert(!in
->is_auth());
3678 dout(10) << __func__
<< ":" << *in
<< dendl
;
3680 // Recurse into any dirfrags beneath this inode
3682 in
->get_dirfrags(ls
);
3683 for (auto subdir
: ls
) {
3684 if (!in
->is_mdsdir() && subdir
->is_subtree_root()) {
3685 dout(10) << __func__
<< ": stray still has subtree " << *in
<< dendl
;
3689 for (auto &it
: subdir
->items
) {
3690 CDentry
*dn
= it
.second
;
3691 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3692 if (dnl
->is_primary()) {
3693 CInode
*tin
= dnl
->get_inode();
3695 /* Remote strays with linkage (i.e. hardlinks) should not be
3696 * expired, because they may be the target of
3697 * a rename() as the owning MDS shuts down */
3698 if (!tin
->is_stray() && tin
->inode
.nlink
) {
3699 dout(10) << __func__
<< ": stray still has linkage " << *tin
<< dendl
;
3703 const bool abort
= expire_recursive(tin
, expiremap
);
3708 if (dn
->lru_is_expireable()) {
3709 trim_dentry(dn
, expiremap
);
3711 dout(10) << __func__
<< ": stray dn is not expireable " << *dn
<< dendl
;
3720 void MDCache::trim_unlinked_inodes()
3722 dout(7) << "trim_unlinked_inodes" << dendl
;
3724 for (auto p
: inode_map
) {
3725 CInode
*in
= p
.second
;
3726 if (in
->get_parent_dn() == NULL
&& !in
->is_base()) {
3727 dout(7) << " will trim from " << *in
<< dendl
;
3731 for (list
<CInode
*>::iterator p
= q
.begin(); p
!= q
.end(); ++p
)
3732 remove_inode_recursive(*p
);
3735 /** recalc_auth_bits()
3736 * once subtree auth is disambiguated, we need to adjust all the
3737 * auth and dirty bits in our cache before moving on.
3739 void MDCache::recalc_auth_bits(bool replay
)
3741 dout(7) << "recalc_auth_bits " << (replay
? "(replay)" : "") << dendl
;
3744 root
->inode_auth
.first
= mds
->mdsmap
->get_root();
3745 bool auth
= mds
->get_nodeid() == root
->inode_auth
.first
;
3747 root
->state_set(CInode::STATE_AUTH
);
3749 root
->state_clear(CInode::STATE_AUTH
);
3751 root
->state_set(CInode::STATE_REJOINING
);
3755 set
<CInode
*> subtree_inodes
;
3756 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3757 p
!= subtrees
.end();
3759 if (p
->first
->dir_auth
.first
== mds
->get_nodeid())
3760 subtree_inodes
.insert(p
->first
->inode
);
3763 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3764 p
!= subtrees
.end();
3766 if (p
->first
->inode
->is_mdsdir()) {
3767 CInode
*in
= p
->first
->inode
;
3768 bool auth
= in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid());
3770 in
->state_set(CInode::STATE_AUTH
);
3772 in
->state_clear(CInode::STATE_AUTH
);
3774 in
->state_set(CInode::STATE_REJOINING
);
3778 list
<CDir
*> dfq
; // dirfrag queue
3779 dfq
.push_back(p
->first
);
3781 bool auth
= p
->first
->authority().first
== mds
->get_nodeid();
3782 dout(10) << " subtree auth=" << auth
<< " for " << *p
->first
<< dendl
;
3784 while (!dfq
.empty()) {
3785 CDir
*dir
= dfq
.front();
3790 dir
->state_set(CDir::STATE_AUTH
);
3792 dir
->state_clear(CDir::STATE_AUTH
);
3794 // close empty non-auth dirfrag
3795 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0) {
3796 dir
->inode
->close_dirfrag(dir
->get_frag());
3799 dir
->state_set(CDir::STATE_REJOINING
);
3800 dir
->state_clear(CDir::STATE_COMPLETE
);
3801 if (dir
->is_dirty())
3806 // dentries in this dir
3807 for (CDir::map_t::iterator q
= dir
->items
.begin();
3808 q
!= dir
->items
.end();
3811 CDentry
*dn
= q
->second
;
3812 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3814 dn
->state_set(CDentry::STATE_AUTH
);
3816 dn
->state_clear(CDentry::STATE_AUTH
);
3818 dn
->state_set(CDentry::STATE_REJOINING
);
3824 if (dnl
->is_primary()) {
3826 CInode
*in
= dnl
->get_inode();
3828 in
->state_set(CInode::STATE_AUTH
);
3830 in
->state_clear(CInode::STATE_AUTH
);
3832 in
->state_set(CInode::STATE_REJOINING
);
3835 if (in
->is_dirty_parent())
3836 in
->clear_dirty_parent();
3837 // avoid touching scatterlocks for our subtree roots!
3838 if (subtree_inodes
.count(in
) == 0)
3839 in
->clear_scatter_dirty();
3844 in
->get_nested_dirfrags(dfq
);
3856 // ===========================================================================
3860 * notes on scatterlock recovery:
3862 * - recovering inode replica sends scatterlock data for any subtree
3863 * roots (the only ones that are possibly dirty).
3865 * - surviving auth incorporates any provided scatterlock data. any
3866 * pending gathers are then finished, as with the other lock types.
3868 * that takes care of surviving auth + (recovering replica)*.
3870 * - surviving replica sends strong_inode, which includes current
3871 * scatterlock state, AND any dirty scatterlock data. this
3872 * provides the recovering auth with everything it might need.
3874 * - recovering auth must pick initial scatterlock state based on
3875 * (weak|strong) rejoins.
3876 * - always assimilate scatterlock data (it can't hurt)
3877 * - any surviving replica in SCATTER state -> SCATTER. otherwise, SYNC.
3878 * - include base inode in ack for all inodes that saw scatterlock content
3880 * also, for scatter gather,
3882 * - auth increments {frag,r}stat.version on completion of any gather.
3884 * - auth incorporates changes in a gather _only_ if the version
3887 * - replica discards changes any time the scatterlock syncs, and
3891 void MDCache::dump_rejoin_status(Formatter
*f
) const
3893 f
->open_object_section("rejoin_status");
3894 f
->dump_stream("rejoin_gather") << rejoin_gather
;
3895 f
->dump_stream("rejoin_ack_gather") << rejoin_ack_gather
;
3896 f
->dump_unsigned("num_opening_inodes", cap_imports_num_opening
);
3900 void MDCache::rejoin_start(MDSInternalContext
*rejoin_done_
)
3902 dout(10) << "rejoin_start" << dendl
;
3903 assert(!rejoin_done
);
3904 rejoin_done
.reset(rejoin_done_
);
3906 rejoin_gather
= recovery_set
;
3907 // need finish opening cap inodes before sending cache rejoins
3908 rejoin_gather
.insert(mds
->get_nodeid());
3909 process_imported_caps();
3915 * this initiates rejoin. it shoudl be called before we get any
3916 * rejoin or rejoin_ack messages (or else mdsmap distribution is broken).
3918 * we start out by sending rejoins to everyone in the recovery set.
3920 * if we are rejoin, send for all regions in our cache.
3921 * if we are active|stopping, send only to nodes that are are rejoining.
3923 void MDCache::rejoin_send_rejoins()
3925 dout(10) << "rejoin_send_rejoins with recovery_set " << recovery_set
<< dendl
;
3927 if (rejoin_gather
.count(mds
->get_nodeid())) {
3928 dout(7) << "rejoin_send_rejoins still processing imported caps, delaying" << dendl
;
3929 rejoins_pending
= true;
3932 if (!resolve_gather
.empty()) {
3933 dout(7) << "rejoin_send_rejoins still waiting for resolves ("
3934 << resolve_gather
<< ")" << dendl
;
3935 rejoins_pending
= true;
3939 assert(!migrator
->is_importing());
3940 assert(!migrator
->is_exporting());
3942 if (!mds
->is_rejoin()) {
3943 disambiguate_other_imports();
3946 map
<mds_rank_t
, MMDSCacheRejoin
*> rejoins
;
3949 // if i am rejoining, send a rejoin to everyone.
3950 // otherwise, just send to others who are rejoining.
3951 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
3952 p
!= recovery_set
.end();
3954 if (*p
== mds
->get_nodeid()) continue; // nothing to myself!
3955 if (rejoin_sent
.count(*p
)) continue; // already sent a rejoin to this node!
3956 if (mds
->is_rejoin())
3957 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_WEAK
);
3958 else if (mds
->mdsmap
->is_rejoin(*p
))
3959 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_STRONG
);
3962 if (mds
->is_rejoin()) {
3963 map
<client_t
, set
<mds_rank_t
> > client_exports
;
3964 for (auto p
= cap_exports
.begin(); p
!= cap_exports
.end(); ++p
) {
3965 assert(cap_export_targets
.count(p
->first
));
3966 mds_rank_t target
= cap_export_targets
[p
->first
];
3967 if (rejoins
.count(target
) == 0)
3969 rejoins
[target
]->cap_exports
[p
->first
] = p
->second
;
3970 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3971 client_exports
[q
->first
].insert(target
);
3973 for (map
<client_t
, set
<mds_rank_t
> >::iterator p
= client_exports
.begin();
3974 p
!= client_exports
.end();
3976 entity_inst_t inst
= mds
->sessionmap
.get_inst(entity_name_t::CLIENT(p
->first
.v
));
3977 for (set
<mds_rank_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3978 rejoins
[*q
]->client_map
[p
->first
] = inst
;
3983 // check all subtrees
3984 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
3985 p
!= subtrees
.end();
3987 CDir
*dir
= p
->first
;
3988 assert(dir
->is_subtree_root());
3989 if (dir
->is_ambiguous_dir_auth()) {
3990 // exporter is recovering, importer is survivor.
3991 assert(rejoins
.count(dir
->authority().first
));
3992 assert(!rejoins
.count(dir
->authority().second
));
3998 continue; // skip my own regions!
4000 mds_rank_t auth
= dir
->get_dir_auth().first
;
4002 if (rejoins
.count(auth
) == 0)
4003 continue; // don't care about this node's subtrees
4005 rejoin_walk(dir
, rejoins
[auth
]);
4008 // rejoin root inodes, too
4009 for (map
<mds_rank_t
, MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4012 if (mds
->is_rejoin()) {
4014 if (p
->first
== 0 && root
) {
4015 p
->second
->add_weak_inode(root
->vino());
4016 if (root
->is_dirty_scattered()) {
4017 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4018 p
->second
->add_scatterlock_state(root
);
4021 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4023 p
->second
->add_weak_inode(in
->vino());
4027 if (p
->first
== 0 && root
) {
4028 p
->second
->add_strong_inode(root
->vino(),
4029 root
->get_replica_nonce(),
4030 root
->get_caps_wanted(),
4031 root
->filelock
.get_state(),
4032 root
->nestlock
.get_state(),
4033 root
->dirfragtreelock
.get_state());
4034 root
->state_set(CInode::STATE_REJOINING
);
4035 if (root
->is_dirty_scattered()) {
4036 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4037 p
->second
->add_scatterlock_state(root
);
4041 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4042 p
->second
->add_strong_inode(in
->vino(),
4043 in
->get_replica_nonce(),
4044 in
->get_caps_wanted(),
4045 in
->filelock
.get_state(),
4046 in
->nestlock
.get_state(),
4047 in
->dirfragtreelock
.get_state());
4048 in
->state_set(CInode::STATE_REJOINING
);
4053 if (!mds
->is_rejoin()) {
4054 // i am survivor. send strong rejoin.
4055 // note request remote_auth_pins, xlocks
4056 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
4057 p
!= active_requests
.end();
4059 MDRequestRef
& mdr
= p
->second
;
4060 if (mdr
->is_slave())
4063 for (map
<MDSCacheObject
*,mds_rank_t
>::iterator q
= mdr
->remote_auth_pins
.begin();
4064 q
!= mdr
->remote_auth_pins
.end();
4066 if (!q
->first
->is_auth()) {
4067 assert(q
->second
== q
->first
->authority().first
);
4068 if (rejoins
.count(q
->second
) == 0) continue;
4069 MMDSCacheRejoin
*rejoin
= rejoins
[q
->second
];
4071 dout(15) << " " << *mdr
<< " authpin on " << *q
->first
<< dendl
;
4072 MDSCacheObjectInfo i
;
4073 q
->first
->set_object_info(i
);
4075 rejoin
->add_inode_authpin(vinodeno_t(i
.ino
, i
.snapid
), mdr
->reqid
, mdr
->attempt
);
4077 rejoin
->add_dentry_authpin(i
.dirfrag
, i
.dname
, i
.snapid
, mdr
->reqid
, mdr
->attempt
);
4079 if (mdr
->has_more() && mdr
->more()->is_remote_frozen_authpin
&&
4080 mdr
->more()->rename_inode
== q
->first
)
4081 rejoin
->add_inode_frozen_authpin(vinodeno_t(i
.ino
, i
.snapid
),
4082 mdr
->reqid
, mdr
->attempt
);
4086 for (set
<SimpleLock
*>::iterator q
= mdr
->xlocks
.begin();
4087 q
!= mdr
->xlocks
.end();
4089 if (!(*q
)->get_parent()->is_auth()) {
4090 mds_rank_t who
= (*q
)->get_parent()->authority().first
;
4091 if (rejoins
.count(who
) == 0) continue;
4092 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4094 dout(15) << " " << *mdr
<< " xlock on " << **q
<< " " << *(*q
)->get_parent() << dendl
;
4095 MDSCacheObjectInfo i
;
4096 (*q
)->get_parent()->set_object_info(i
);
4098 rejoin
->add_inode_xlock(vinodeno_t(i
.ino
, i
.snapid
), (*q
)->get_type(),
4099 mdr
->reqid
, mdr
->attempt
);
4101 rejoin
->add_dentry_xlock(i
.dirfrag
, i
.dname
, i
.snapid
,
4102 mdr
->reqid
, mdr
->attempt
);
4106 for (map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
4107 q
!= mdr
->remote_wrlocks
.end();
4109 mds_rank_t who
= q
->second
;
4110 if (rejoins
.count(who
) == 0) continue;
4111 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4113 dout(15) << " " << *mdr
<< " wrlock on " << q
->second
4114 << " " << q
->first
->get_parent() << dendl
;
4115 MDSCacheObjectInfo i
;
4116 q
->first
->get_parent()->set_object_info(i
);
4118 rejoin
->add_inode_wrlock(vinodeno_t(i
.ino
, i
.snapid
), q
->first
->get_type(),
4119 mdr
->reqid
, mdr
->attempt
);
4124 // send the messages
4125 for (map
<mds_rank_t
,MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4128 assert(rejoin_sent
.count(p
->first
) == 0);
4129 assert(rejoin_ack_gather
.count(p
->first
) == 0);
4130 rejoin_sent
.insert(p
->first
);
4131 rejoin_ack_gather
.insert(p
->first
);
4132 mds
->send_message_mds(p
->second
, p
->first
);
4134 rejoin_ack_gather
.insert(mds
->get_nodeid()); // we need to complete rejoin_gather_finish, too
4135 rejoins_pending
= false;
4138 if (mds
->is_rejoin() && rejoins
.empty()) {
4139 dout(10) << "nothing to rejoin" << dendl
;
4140 rejoin_gather_finish();
4146 * rejoin_walk - build rejoin declarations for a subtree
4148 * @param dir subtree root
4149 * @param rejoin rejoin message
4151 * from a rejoining node:
4153 * weak dentries (w/ connectivity)
4155 * from a surviving node:
4157 * strong dentries (no connectivity!)
4160 void MDCache::rejoin_walk(CDir
*dir
, MMDSCacheRejoin
*rejoin
)
4162 dout(10) << "rejoin_walk " << *dir
<< dendl
;
4164 list
<CDir
*> nested
; // finish this dir, then do nested items
4166 if (mds
->is_rejoin()) {
4168 rejoin
->add_weak_dirfrag(dir
->dirfrag());
4169 for (CDir::map_t::iterator p
= dir
->items
.begin();
4170 p
!= dir
->items
.end();
4172 CDentry
*dn
= p
->second
;
4173 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4174 dout(15) << " add_weak_primary_dentry " << *dn
<< dendl
;
4175 assert(dnl
->is_primary());
4176 CInode
*in
= dnl
->get_inode();
4177 assert(dnl
->get_inode()->is_dir());
4178 rejoin
->add_weak_primary_dentry(dir
->ino(), dn
->name
.c_str(), dn
->first
, dn
->last
, in
->ino());
4179 in
->get_nested_dirfrags(nested
);
4180 if (in
->is_dirty_scattered()) {
4181 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4182 rejoin
->add_scatterlock_state(in
);
4187 dout(15) << " add_strong_dirfrag " << *dir
<< dendl
;
4188 rejoin
->add_strong_dirfrag(dir
->dirfrag(), dir
->get_replica_nonce(), dir
->get_dir_rep());
4189 dir
->state_set(CDir::STATE_REJOINING
);
4191 for (CDir::map_t::iterator p
= dir
->items
.begin();
4192 p
!= dir
->items
.end();
4194 CDentry
*dn
= p
->second
;
4195 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4196 dout(15) << " add_strong_dentry " << *dn
<< dendl
;
4197 rejoin
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
4198 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
4199 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
4200 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
4201 dn
->get_replica_nonce(),
4202 dn
->lock
.get_state());
4203 dn
->state_set(CDentry::STATE_REJOINING
);
4204 if (dnl
->is_primary()) {
4205 CInode
*in
= dnl
->get_inode();
4206 dout(15) << " add_strong_inode " << *in
<< dendl
;
4207 rejoin
->add_strong_inode(in
->vino(),
4208 in
->get_replica_nonce(),
4209 in
->get_caps_wanted(),
4210 in
->filelock
.get_state(),
4211 in
->nestlock
.get_state(),
4212 in
->dirfragtreelock
.get_state());
4213 in
->state_set(CInode::STATE_REJOINING
);
4214 in
->get_nested_dirfrags(nested
);
4215 if (in
->is_dirty_scattered()) {
4216 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4217 rejoin
->add_scatterlock_state(in
);
4223 // recurse into nested dirs
4224 for (list
<CDir
*>::iterator p
= nested
.begin();
4227 rejoin_walk(*p
, rejoin
);
4233 * - reply with the lockstate
4235 * if i am active|stopping,
4236 * - remove source from replica list for everything not referenced here.
4237 * This function puts the passed message before returning.
4239 void MDCache::handle_cache_rejoin(MMDSCacheRejoin
*m
)
4241 dout(7) << "handle_cache_rejoin " << *m
<< " from " << m
->get_source()
4242 << " (" << m
->get_payload().length() << " bytes)"
4246 case MMDSCacheRejoin::OP_WEAK
:
4247 handle_cache_rejoin_weak(m
);
4249 case MMDSCacheRejoin::OP_STRONG
:
4250 handle_cache_rejoin_strong(m
);
4252 case MMDSCacheRejoin::OP_ACK
:
4253 handle_cache_rejoin_ack(m
);
4264 * handle_cache_rejoin_weak
4267 * - is recovering from their journal.
4268 * - may have incorrect (out of date) inode contents
4269 * - will include weak dirfrag if sender is dirfrag auth and parent inode auth is recipient
4271 * if the sender didn't trim_non_auth(), they
4272 * - may have incorrect (out of date) dentry/inode linkage
4273 * - may have deleted/purged inodes
4274 * and i may have to go to disk to get accurate inode contents. yuck.
4275 * This functions DOES NOT put the passed message before returning
4277 void MDCache::handle_cache_rejoin_weak(MMDSCacheRejoin
*weak
)
4279 mds_rank_t from
= mds_rank_t(weak
->get_source().num());
4281 // possible response(s)
4282 MMDSCacheRejoin
*ack
= 0; // if survivor
4283 set
<vinodeno_t
> acked_inodes
; // if survivor
4284 set
<SimpleLock
*> gather_locks
; // if survivor
4285 bool survivor
= false; // am i a survivor?
4287 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
4289 dout(10) << "i am a surivivor, and will ack immediately" << dendl
;
4290 ack
= new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
4292 map
<inodeno_t
,map
<client_t
,Capability::Import
> > imported_caps
;
4294 // check cap exports
4295 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4296 CInode
*in
= get_inode(p
->first
);
4297 assert(!in
|| in
->is_auth());
4298 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4299 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< " on " << *in
<< dendl
;
4300 Capability
*cap
= rejoin_import_cap(in
, q
->first
, q
->second
, from
);
4301 Capability::Import
& im
= imported_caps
[p
->first
][q
->first
];
4303 im
.cap_id
= cap
->get_cap_id();
4304 im
.issue_seq
= cap
->get_last_seq();
4305 im
.mseq
= cap
->get_mseq();
4310 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
, true);
4313 ::encode(imported_caps
, ack
->imported_caps
);
4315 assert(mds
->is_rejoin());
4317 // we may have already received a strong rejoin from the sender.
4318 rejoin_scour_survivor_replicas(from
, NULL
, acked_inodes
, gather_locks
);
4319 assert(gather_locks
.empty());
4321 // check cap exports.
4322 rejoin_client_map
.insert(weak
->client_map
.begin(), weak
->client_map
.end());
4324 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4325 CInode
*in
= get_inode(p
->first
);
4326 assert(!in
|| in
->is_auth());
4328 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4329 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< dendl
;
4330 cap_imports
[p
->first
][q
->first
][from
] = q
->second
;
4335 // assimilate any potentially dirty scatterlock state
4336 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4337 p
!= weak
->inode_scatterlocks
.end();
4339 CInode
*in
= get_inode(p
->first
);
4341 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4342 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4343 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4345 rejoin_potential_updated_scatterlocks
.insert(in
);
4348 // recovering peer may send incorrect dirfrags here. we need to
4349 // infer which dirfrag they meant. the ack will include a
4350 // strong_dirfrag that will set them straight on the fragmentation.
4353 set
<CDir
*> dirs_to_share
;
4354 for (set
<dirfrag_t
>::iterator p
= weak
->weak_dirfrags
.begin();
4355 p
!= weak
->weak_dirfrags
.end();
4357 CInode
*diri
= get_inode(p
->ino
);
4359 dout(0) << " missing dir ino " << p
->ino
<< dendl
;
4363 if (diri
->dirfragtree
.is_leaf(p
->frag
)) {
4364 ls
.push_back(p
->frag
);
4366 diri
->dirfragtree
.get_leaves_under(p
->frag
, ls
);
4368 ls
.push_back(diri
->dirfragtree
[p
->frag
.value()]);
4370 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4372 CDir
*dir
= diri
->get_dirfrag(fg
);
4374 dout(0) << " missing dir for " << p
->frag
<< " (which maps to " << fg
<< ") on " << *diri
<< dendl
;
4378 if (dirs_to_share
.count(dir
)) {
4379 dout(10) << " already have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4381 dirs_to_share
.insert(dir
);
4382 unsigned nonce
= dir
->add_replica(from
);
4383 dout(10) << " have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4385 ack
->add_strong_dirfrag(dir
->dirfrag(), nonce
, dir
->dir_rep
);
4386 ack
->add_dirfrag_base(dir
);
4392 for (map
<inodeno_t
,map
<string_snap_t
,MMDSCacheRejoin::dn_weak
> >::iterator p
= weak
->weak
.begin();
4393 p
!= weak
->weak
.end();
4395 CInode
*diri
= get_inode(p
->first
);
4397 dout(0) << " missing dir ino " << p
->first
<< dendl
;
4402 for (map
<string_snap_t
,MMDSCacheRejoin::dn_weak
>::iterator q
= p
->second
.begin();
4403 q
!= p
->second
.end();
4405 // locate proper dirfrag.
4406 // optimize for common case (one dirfrag) to avoid dirs_to_share set check
4407 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4408 if (!dir
|| dir
->get_frag() != fg
) {
4409 dir
= diri
->get_dirfrag(fg
);
4411 dout(0) << " missing dir frag " << fg
<< " on " << *diri
<< dendl
;
4413 assert(dirs_to_share
.count(dir
));
4417 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4419 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4420 assert(dnl
->is_primary());
4422 if (survivor
&& dn
->is_replica(from
))
4423 dentry_remove_replica(dn
, from
, gather_locks
);
4424 unsigned dnonce
= dn
->add_replica(from
);
4425 dout(10) << " have " << *dn
<< dendl
;
4427 ack
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
4428 dnl
->get_inode()->ino(), inodeno_t(0), 0,
4429 dnonce
, dn
->lock
.get_replica_state());
4432 CInode
*in
= dnl
->get_inode();
4435 if (survivor
&& in
->is_replica(from
))
4436 inode_remove_replica(in
, from
, true, gather_locks
);
4437 unsigned inonce
= in
->add_replica(from
);
4438 dout(10) << " have " << *in
<< dendl
;
4440 // scatter the dirlock, just in case?
4441 if (!survivor
&& in
->is_dir() && in
->has_subtree_root_dirfrag())
4442 in
->filelock
.set_state(LOCK_MIX
);
4445 acked_inodes
.insert(in
->vino());
4446 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4448 in
->_encode_locks_state_for_rejoin(bl
, from
);
4449 ack
->add_inode_locks(in
, inonce
, bl
);
4454 // weak base inodes? (root, stray, etc.)
4455 for (set
<vinodeno_t
>::iterator p
= weak
->weak_inodes
.begin();
4456 p
!= weak
->weak_inodes
.end();
4458 CInode
*in
= get_inode(*p
);
4459 assert(in
); // hmm fixme wrt stray?
4460 if (survivor
&& in
->is_replica(from
))
4461 inode_remove_replica(in
, from
, true, gather_locks
);
4462 unsigned inonce
= in
->add_replica(from
);
4463 dout(10) << " have base " << *in
<< dendl
;
4466 acked_inodes
.insert(in
->vino());
4467 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4469 in
->_encode_locks_state_for_rejoin(bl
, from
);
4470 ack
->add_inode_locks(in
, inonce
, bl
);
4474 assert(rejoin_gather
.count(from
));
4475 rejoin_gather
.erase(from
);
4477 // survivor. do everything now.
4478 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4479 p
!= weak
->inode_scatterlocks
.end();
4481 CInode
*in
= get_inode(p
->first
);
4483 dout(10) << " including base inode (due to potential scatterlock update) " << *in
<< dendl
;
4484 acked_inodes
.insert(in
->vino());
4485 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4488 rejoin_scour_survivor_replicas(from
, ack
, acked_inodes
, gather_locks
);
4489 mds
->send_message(ack
, weak
->get_connection());
4491 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
4492 if (!(*p
)->is_stable())
4493 mds
->locker
->eval_gather(*p
);
4497 if (rejoin_gather
.empty()) {
4498 rejoin_gather_finish();
4500 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4505 class C_MDC_RejoinGatherFinish
: public MDCacheContext
{
4507 explicit C_MDC_RejoinGatherFinish(MDCache
*c
) : MDCacheContext(c
) {}
4508 void finish(int r
) override
{
4509 mdcache
->rejoin_gather_finish();
4514 * rejoin_scour_survivor_replica - remove source from replica list on unmentioned objects
4516 * all validated replicas are acked with a strong nonce, etc. if that isn't in the
4517 * ack, the replica dne, and we can remove it from our replica maps.
4519 void MDCache::rejoin_scour_survivor_replicas(mds_rank_t from
, MMDSCacheRejoin
*ack
,
4520 set
<vinodeno_t
>& acked_inodes
,
4521 set
<SimpleLock
*>& gather_locks
)
4523 dout(10) << "rejoin_scour_survivor_replicas from mds." << from
<< dendl
;
4525 auto scour_func
= [this, from
, ack
, &acked_inodes
, &gather_locks
] (CInode
*in
) {
4527 if (in
->is_auth() &&
4528 in
->is_replica(from
) &&
4529 (ack
== NULL
|| acked_inodes
.count(in
->vino()) == 0)) {
4530 inode_remove_replica(in
, from
, false, gather_locks
);
4531 dout(10) << " rem " << *in
<< dendl
;
4538 in
->get_dirfrags(dfs
);
4539 for (list
<CDir
*>::iterator p
= dfs
.begin();
4543 if (!dir
->is_auth())
4546 if (dir
->is_replica(from
) &&
4547 (ack
== NULL
|| ack
->strong_dirfrags
.count(dir
->dirfrag()) == 0)) {
4548 dir
->remove_replica(from
);
4549 dout(10) << " rem " << *dir
<< dendl
;
4553 for (CDir::map_t::iterator p
= dir
->items
.begin();
4554 p
!= dir
->items
.end();
4556 CDentry
*dn
= p
->second
;
4558 if (dn
->is_replica(from
) &&
4560 ack
->strong_dentries
.count(dir
->dirfrag()) == 0 ||
4561 ack
->strong_dentries
[dir
->dirfrag()].count(string_snap_t(dn
->name
, dn
->last
)) == 0)) {
4562 dentry_remove_replica(dn
, from
, gather_locks
);
4563 dout(10) << " rem " << *dn
<< dendl
;
4569 for (auto p
: inode_map
)
4570 scour_func(p
.second
);
4571 for (auto p
: snap_inode_map
)
4572 scour_func(p
.second
);
4576 CInode
*MDCache::rejoin_invent_inode(inodeno_t ino
, snapid_t last
)
4578 CInode
*in
= new CInode(this, true, 1, last
);
4579 in
->inode
.ino
= ino
;
4580 in
->state_set(CInode::STATE_REJOINUNDEF
);
4582 rejoin_undef_inodes
.insert(in
);
4583 dout(10) << " invented " << *in
<< dendl
;
4587 CDir
*MDCache::rejoin_invent_dirfrag(dirfrag_t df
)
4589 CInode
*in
= get_inode(df
.ino
);
4591 in
= rejoin_invent_inode(df
.ino
, CEPH_NOSNAP
);
4592 if (!in
->is_dir()) {
4593 assert(in
->state_test(CInode::STATE_REJOINUNDEF
));
4594 in
->inode
.mode
= S_IFDIR
;
4595 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4597 CDir
*dir
= in
->get_or_open_dirfrag(this, df
.frag
);
4598 dir
->state_set(CDir::STATE_REJOINUNDEF
);
4599 rejoin_undef_dirfrags
.insert(dir
);
4600 dout(10) << " invented " << *dir
<< dendl
;
4604 /* This functions DOES NOT put the passed message before returning */
4605 void MDCache::handle_cache_rejoin_strong(MMDSCacheRejoin
*strong
)
4607 mds_rank_t from
= mds_rank_t(strong
->get_source().num());
4609 // only a recovering node will get a strong rejoin.
4610 assert(mds
->is_rejoin());
4612 // assimilate any potentially dirty scatterlock state
4613 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= strong
->inode_scatterlocks
.begin();
4614 p
!= strong
->inode_scatterlocks
.end();
4616 CInode
*in
= get_inode(p
->first
);
4618 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4619 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4620 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4621 rejoin_potential_updated_scatterlocks
.insert(in
);
4624 rejoin_unlinked_inodes
[from
].clear();
4626 // surviving peer may send incorrect dirfrag here (maybe they didn't
4627 // get the fragment notify, or maybe we rolled back?). we need to
4628 // infer the right frag and get them with the program. somehow.
4629 // we don't normally send ACK.. so we'll need to bundle this with
4630 // MISSING or something.
4632 // strong dirfrags/dentries.
4633 // also process auth_pins, xlocks.
4634 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= strong
->strong_dirfrags
.begin();
4635 p
!= strong
->strong_dirfrags
.end();
4637 CInode
*diri
= get_inode(p
->first
.ino
);
4639 diri
= rejoin_invent_inode(p
->first
.ino
, CEPH_NOSNAP
);
4640 CDir
*dir
= diri
->get_dirfrag(p
->first
.frag
);
4641 bool refragged
= false;
4643 dout(10) << " have " << *dir
<< dendl
;
4645 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
4646 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), frag_t()));
4647 else if (diri
->dirfragtree
.is_leaf(p
->first
.frag
))
4648 dir
= rejoin_invent_dirfrag(p
->first
);
4651 dir
->add_replica(from
, p
->second
.nonce
);
4652 dir
->dir_rep
= p
->second
.dir_rep
;
4654 dout(10) << " frag " << p
->first
<< " doesn't match dirfragtree " << *diri
<< dendl
;
4656 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, ls
);
4658 ls
.push_back(diri
->dirfragtree
[p
->first
.frag
.value()]);
4659 dout(10) << " maps to frag(s) " << ls
<< dendl
;
4660 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4661 CDir
*dir
= diri
->get_dirfrag(*q
);
4663 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), *q
));
4665 dout(10) << " have(approx) " << *dir
<< dendl
;
4666 dir
->add_replica(from
, p
->second
.nonce
);
4667 dir
->dir_rep
= p
->second
.dir_rep
;
4672 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= strong
->strong_dentries
[p
->first
];
4673 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4678 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4680 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4681 dir
= diri
->get_dirfrag(fg
);
4683 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4686 if (q
->second
.is_remote()) {
4687 dn
= dir
->add_remote_dentry(q
->first
.name
, q
->second
.remote_ino
, q
->second
.remote_d_type
,
4688 q
->second
.first
, q
->first
.snapid
);
4689 } else if (q
->second
.is_null()) {
4690 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4692 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4693 if (!in
) in
= rejoin_invent_inode(q
->second
.ino
, q
->first
.snapid
);
4694 dn
= dir
->add_primary_dentry(q
->first
.name
, in
, q
->second
.first
, q
->first
.snapid
);
4696 dout(10) << " invented " << *dn
<< dendl
;
4698 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4701 if (strong
->authpinned_dentries
.count(p
->first
) &&
4702 strong
->authpinned_dentries
[p
->first
].count(q
->first
)) {
4703 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_dentries
[p
->first
][q
->first
].begin();
4704 r
!= strong
->authpinned_dentries
[p
->first
][q
->first
].end();
4706 dout(10) << " dn authpin by " << *r
<< " on " << *dn
<< dendl
;
4708 // get/create slave mdrequest
4710 if (have_request(r
->reqid
))
4711 mdr
= request_get(r
->reqid
);
4713 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4719 if (strong
->xlocked_dentries
.count(p
->first
) &&
4720 strong
->xlocked_dentries
[p
->first
].count(q
->first
)) {
4721 MMDSCacheRejoin::slave_reqid r
= strong
->xlocked_dentries
[p
->first
][q
->first
];
4722 dout(10) << " dn xlock by " << r
<< " on " << *dn
<< dendl
;
4723 MDRequestRef mdr
= request_get(r
.reqid
); // should have this from auth_pin above.
4724 assert(mdr
->is_auth_pinned(dn
));
4725 if (!mdr
->xlocks
.count(&dn
->versionlock
)) {
4726 assert(dn
->versionlock
.can_xlock_local());
4727 dn
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4728 mdr
->xlocks
.insert(&dn
->versionlock
);
4729 mdr
->locks
.insert(&dn
->versionlock
);
4731 if (dn
->lock
.is_stable())
4732 dn
->auth_pin(&dn
->lock
);
4733 dn
->lock
.set_state(LOCK_XLOCK
);
4734 dn
->lock
.get_xlock(mdr
, mdr
->get_client());
4735 mdr
->xlocks
.insert(&dn
->lock
);
4736 mdr
->locks
.insert(&dn
->lock
);
4739 dn
->add_replica(from
, q
->second
.nonce
);
4740 dout(10) << " have " << *dn
<< dendl
;
4742 if (dnl
->is_primary()) {
4743 if (q
->second
.is_primary()) {
4744 if (vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != dnl
->get_inode()->vino()) {
4745 // the survivor missed MDentryUnlink+MDentryLink messages ?
4746 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4747 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4749 assert(in
->get_parent_dn());
4750 rejoin_unlinked_inodes
[from
].insert(in
);
4751 dout(7) << " sender has primary dentry but wrong inode" << dendl
;
4754 // the survivor missed MDentryLink message ?
4755 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4756 dout(7) << " sender doesn't have primay dentry" << dendl
;
4759 if (q
->second
.is_primary()) {
4760 // the survivor missed MDentryUnlink message ?
4761 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4763 assert(in
->get_parent_dn());
4764 rejoin_unlinked_inodes
[from
].insert(in
);
4765 dout(7) << " sender has primary dentry but we don't" << dendl
;
4771 for (map
<vinodeno_t
, MMDSCacheRejoin::inode_strong
>::iterator p
= strong
->strong_inodes
.begin();
4772 p
!= strong
->strong_inodes
.end();
4774 CInode
*in
= get_inode(p
->first
);
4776 in
->add_replica(from
, p
->second
.nonce
);
4777 dout(10) << " have " << *in
<< dendl
;
4779 MMDSCacheRejoin::inode_strong
&is
= p
->second
;
4782 if (is
.caps_wanted
) {
4783 in
->mds_caps_wanted
[from
] = is
.caps_wanted
;
4784 dout(15) << " inode caps_wanted " << ccap_string(is
.caps_wanted
)
4785 << " on " << *in
<< dendl
;
4789 // infer state from replica state:
4790 // * go to MIX if they might have wrlocks
4791 // * go to LOCK if they are LOCK (just bc identify_files_to_recover might start twiddling filelock)
4792 in
->filelock
.infer_state_from_strong_rejoin(is
.filelock
, !in
->is_dir()); // maybe also go to LOCK
4793 in
->nestlock
.infer_state_from_strong_rejoin(is
.nestlock
, false);
4794 in
->dirfragtreelock
.infer_state_from_strong_rejoin(is
.dftlock
, false);
4797 if (strong
->authpinned_inodes
.count(in
->vino())) {
4798 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_inodes
[in
->vino()].begin();
4799 r
!= strong
->authpinned_inodes
[in
->vino()].end();
4801 dout(10) << " inode authpin by " << *r
<< " on " << *in
<< dendl
;
4803 // get/create slave mdrequest
4805 if (have_request(r
->reqid
))
4806 mdr
= request_get(r
->reqid
);
4808 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4809 if (strong
->frozen_authpin_inodes
.count(in
->vino())) {
4810 assert(!in
->get_num_auth_pins());
4811 mdr
->freeze_auth_pin(in
);
4813 assert(!in
->is_frozen_auth_pin());
4819 if (strong
->xlocked_inodes
.count(in
->vino())) {
4820 for (map
<int,MMDSCacheRejoin::slave_reqid
>::iterator q
= strong
->xlocked_inodes
[in
->vino()].begin();
4821 q
!= strong
->xlocked_inodes
[in
->vino()].end();
4823 SimpleLock
*lock
= in
->get_lock(q
->first
);
4824 dout(10) << " inode xlock by " << q
->second
<< " on " << *lock
<< " on " << *in
<< dendl
;
4825 MDRequestRef mdr
= request_get(q
->second
.reqid
); // should have this from auth_pin above.
4826 assert(mdr
->is_auth_pinned(in
));
4827 if (!mdr
->xlocks
.count(&in
->versionlock
)) {
4828 assert(in
->versionlock
.can_xlock_local());
4829 in
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4830 mdr
->xlocks
.insert(&in
->versionlock
);
4831 mdr
->locks
.insert(&in
->versionlock
);
4833 if (lock
->is_stable())
4835 lock
->set_state(LOCK_XLOCK
);
4836 if (lock
== &in
->filelock
)
4838 lock
->get_xlock(mdr
, mdr
->get_client());
4839 mdr
->xlocks
.insert(lock
);
4840 mdr
->locks
.insert(lock
);
4845 for (map
<vinodeno_t
, map
<int, list
<MMDSCacheRejoin::slave_reqid
> > >::iterator p
= strong
->wrlocked_inodes
.begin();
4846 p
!= strong
->wrlocked_inodes
.end();
4848 CInode
*in
= get_inode(p
->first
);
4849 for (map
<int, list
<MMDSCacheRejoin::slave_reqid
> >::iterator q
= p
->second
.begin();
4850 q
!= p
->second
.end();
4852 SimpleLock
*lock
= in
->get_lock(q
->first
);
4853 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= q
->second
.begin();
4854 r
!= q
->second
.end();
4856 dout(10) << " inode wrlock by " << *r
<< " on " << *lock
<< " on " << *in
<< dendl
;
4857 MDRequestRef mdr
= request_get(r
->reqid
); // should have this from auth_pin above.
4859 assert(mdr
->is_auth_pinned(in
));
4860 lock
->set_state(LOCK_MIX
);
4861 if (lock
== &in
->filelock
)
4863 lock
->get_wrlock(true);
4864 mdr
->wrlocks
.insert(lock
);
4865 mdr
->locks
.insert(lock
);
4871 assert(rejoin_gather
.count(from
));
4872 rejoin_gather
.erase(from
);
4873 if (rejoin_gather
.empty()) {
4874 rejoin_gather_finish();
4876 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4880 /* This functions DOES NOT put the passed message before returning */
4881 void MDCache::handle_cache_rejoin_ack(MMDSCacheRejoin
*ack
)
4883 dout(7) << "handle_cache_rejoin_ack from " << ack
->get_source() << dendl
;
4884 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
4886 assert(mds
->get_state() >= MDSMap::STATE_REJOIN
);
4887 bool survivor
= !mds
->is_rejoin();
4889 // for sending cache expire message
4890 set
<CInode
*> isolated_inodes
;
4891 set
<CInode
*> refragged_inodes
;
4894 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= ack
->strong_dirfrags
.begin();
4895 p
!= ack
->strong_dirfrags
.end();
4897 // we may have had incorrect dir fragmentation; refragment based
4898 // on what they auth tells us.
4899 CDir
*dir
= get_dirfrag(p
->first
);
4901 dir
= get_force_dirfrag(p
->first
, false);
4903 refragged_inodes
.insert(dir
->get_inode());
4906 CInode
*diri
= get_inode(p
->first
.ino
);
4908 // barebones inode; the full inode loop below will clean up.
4909 diri
= new CInode(this, false);
4910 diri
->inode
.ino
= p
->first
.ino
;
4911 diri
->inode
.mode
= S_IFDIR
;
4912 diri
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4914 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
) {
4915 diri
->inode_auth
= mds_authority_t(from
, CDIR_AUTH_UNKNOWN
);
4916 dout(10) << " add inode " << *diri
<< dendl
;
4918 diri
->inode_auth
= CDIR_AUTH_DEFAULT
;
4919 isolated_inodes
.insert(diri
);
4920 dout(10) << " unconnected dirfrag " << p
->first
<< dendl
;
4923 // barebones dirfrag; the full dirfrag loop below will clean up.
4924 dir
= diri
->add_dirfrag(new CDir(diri
, p
->first
.frag
, this, false));
4925 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
||
4926 (dir
->authority() != CDIR_AUTH_UNDEF
&&
4927 dir
->authority().first
!= from
))
4928 adjust_subtree_auth(dir
, from
);
4929 dout(10) << " add dirfrag " << *dir
<< dendl
;
4932 dir
->set_replica_nonce(p
->second
.nonce
);
4933 dir
->state_clear(CDir::STATE_REJOINING
);
4934 dout(10) << " got " << *dir
<< dendl
;
4937 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= ack
->strong_dentries
[p
->first
];
4938 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4941 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4943 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4945 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4947 assert(dn
->last
== q
->first
.snapid
);
4948 if (dn
->first
!= q
->second
.first
) {
4949 dout(10) << " adjust dn.first " << dn
->first
<< " -> " << q
->second
.first
<< " on " << *dn
<< dendl
;
4950 dn
->first
= q
->second
.first
;
4953 // may have bad linkage if we missed dentry link/unlink messages
4954 if (dnl
->is_primary()) {
4955 CInode
*in
= dnl
->get_inode();
4956 if (!q
->second
.is_primary() ||
4957 vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != in
->vino()) {
4958 dout(10) << " had bad linkage for " << *dn
<< ", unlinking " << *in
<< dendl
;
4959 dir
->unlink_inode(dn
);
4961 } else if (dnl
->is_remote()) {
4962 if (!q
->second
.is_remote() ||
4963 q
->second
.remote_ino
!= dnl
->get_remote_ino() ||
4964 q
->second
.remote_d_type
!= dnl
->get_remote_d_type()) {
4965 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4966 dir
->unlink_inode(dn
);
4969 if (!q
->second
.is_null())
4970 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4973 // hmm, did we have the proper linkage here?
4974 if (dnl
->is_null() && !q
->second
.is_null()) {
4975 if (q
->second
.is_remote()) {
4976 dn
->dir
->link_remote_inode(dn
, q
->second
.remote_ino
, q
->second
.remote_d_type
);
4978 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4980 // barebones inode; assume it's dir, the full inode loop below will clean up.
4981 in
= new CInode(this, false, q
->second
.first
, q
->first
.snapid
);
4982 in
->inode
.ino
= q
->second
.ino
;
4983 in
->inode
.mode
= S_IFDIR
;
4984 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4986 dout(10) << " add inode " << *in
<< dendl
;
4987 } else if (in
->get_parent_dn()) {
4988 dout(10) << " had bad linkage for " << *(in
->get_parent_dn())
4989 << ", unlinking " << *in
<< dendl
;
4990 in
->get_parent_dir()->unlink_inode(in
->get_parent_dn());
4992 dn
->dir
->link_primary_inode(dn
, in
);
4993 isolated_inodes
.erase(in
);
4997 dn
->set_replica_nonce(q
->second
.nonce
);
4998 dn
->lock
.set_state_rejoin(q
->second
.lock
, rejoin_waiters
, survivor
);
4999 dn
->state_clear(CDentry::STATE_REJOINING
);
5000 dout(10) << " got " << *dn
<< dendl
;
5004 for (set
<CInode
*>::iterator p
= refragged_inodes
.begin();
5005 p
!= refragged_inodes
.end();
5008 (*p
)->get_nested_dirfrags(ls
);
5009 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
5010 if ((*q
)->is_auth() || ack
->strong_dirfrags
.count((*q
)->dirfrag()))
5012 assert((*q
)->get_num_any() == 0);
5013 (*p
)->close_dirfrag((*q
)->get_frag());
5018 for (map
<dirfrag_t
, bufferlist
>::iterator p
= ack
->dirfrag_bases
.begin();
5019 p
!= ack
->dirfrag_bases
.end();
5021 CDir
*dir
= get_dirfrag(p
->first
);
5023 bufferlist::iterator q
= p
->second
.begin();
5024 dir
->_decode_base(q
);
5025 dout(10) << " got dir replica " << *dir
<< dendl
;
5029 bufferlist::iterator p
= ack
->inode_base
.begin();
5036 ::decode(basebl
, p
);
5037 CInode
*in
= get_inode(ino
, last
);
5039 bufferlist::iterator q
= basebl
.begin();
5040 in
->_decode_base(q
);
5041 dout(10) << " got inode base " << *in
<< dendl
;
5045 p
= ack
->inode_locks
.begin();
5046 //dout(10) << "inode_locks len " << ack->inode_locks.length() << " is " << ack->inode_locks << dendl;
5055 ::decode(lockbl
, p
);
5057 CInode
*in
= get_inode(ino
, last
);
5059 in
->set_replica_nonce(nonce
);
5060 bufferlist::iterator q
= lockbl
.begin();
5061 in
->_decode_locks_rejoin(q
, rejoin_waiters
, rejoin_eval_locks
, survivor
);
5062 in
->state_clear(CInode::STATE_REJOINING
);
5063 dout(10) << " got inode locks " << *in
<< dendl
;
5066 // FIXME: This can happen if entire subtree, together with the inode subtree root
5067 // belongs to, were trimmed between sending cache rejoin and receiving rejoin ack.
5068 assert(isolated_inodes
.empty());
5070 map
<inodeno_t
,map
<client_t
,Capability::Import
> > peer_imported
;
5071 bufferlist::iterator bp
= ack
->imported_caps
.begin();
5072 ::decode(peer_imported
, bp
);
5074 for (map
<inodeno_t
,map
<client_t
,Capability::Import
> >::iterator p
= peer_imported
.begin();
5075 p
!= peer_imported
.end();
5077 assert(cap_exports
.count(p
->first
));
5078 assert(cap_export_targets
.count(p
->first
));
5079 assert(cap_export_targets
[p
->first
] == from
);
5080 for (map
<client_t
,Capability::Import
>::iterator q
= p
->second
.begin();
5081 q
!= p
->second
.end();
5083 assert(cap_exports
[p
->first
].count(q
->first
));
5085 dout(10) << " exporting caps for client." << q
->first
<< " ino " << p
->first
<< dendl
;
5086 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5089 // mark client caps stale.
5090 MClientCaps
*m
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0,
5091 cap_exports
[p
->first
][q
->first
].capinfo
.cap_id
, 0,
5092 mds
->get_osd_epoch_barrier());
5093 m
->set_cap_peer(q
->second
.cap_id
, q
->second
.issue_seq
, q
->second
.mseq
,
5094 (q
->second
.cap_id
> 0 ? from
: -1), 0);
5095 mds
->send_message_client_counted(m
, session
);
5097 cap_exports
[p
->first
].erase(q
->first
);
5099 assert(cap_exports
[p
->first
].empty());
5103 assert(rejoin_ack_gather
.count(from
));
5104 rejoin_ack_gather
.erase(from
);
5107 if (rejoin_gather
.empty()) {
5108 // eval unstable scatter locks after all wrlocks are rejoined.
5109 while (!rejoin_eval_locks
.empty()) {
5110 SimpleLock
*lock
= rejoin_eval_locks
.front();
5111 rejoin_eval_locks
.pop_front();
5112 if (!lock
->is_stable())
5113 mds
->locker
->eval_gather(lock
);
5117 if (rejoin_gather
.empty() && // make sure we've gotten our FULL inodes, too.
5118 rejoin_ack_gather
.empty()) {
5119 // finally, kickstart past snap parent opens
5120 open_snap_parents();
5122 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")"
5123 << ", rejoin_ack from (" << rejoin_ack_gather
<< ")" << dendl
;
5127 mds
->queue_waiters(rejoin_waiters
);
5132 * rejoin_trim_undef_inodes() -- remove REJOINUNDEF flagged inodes
5134 * FIXME: wait, can this actually happen? a survivor should generate cache trim
5135 * messages that clean these guys up...
5137 void MDCache::rejoin_trim_undef_inodes()
5139 dout(10) << "rejoin_trim_undef_inodes" << dendl
;
5141 while (!rejoin_undef_inodes
.empty()) {
5142 set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5144 rejoin_undef_inodes
.erase(p
);
5146 in
->clear_replica_map();
5148 // close out dirfrags
5151 in
->get_dirfrags(dfls
);
5152 for (list
<CDir
*>::iterator p
= dfls
.begin();
5156 dir
->clear_replica_map();
5158 for (CDir::map_t::iterator p
= dir
->items
.begin();
5159 p
!= dir
->items
.end();
5161 CDentry
*dn
= p
->second
;
5162 dn
->clear_replica_map();
5164 dout(10) << " trimming " << *dn
<< dendl
;
5165 dir
->remove_dentry(dn
);
5168 dout(10) << " trimming " << *dir
<< dendl
;
5169 in
->close_dirfrag(dir
->dirfrag().frag
);
5173 CDentry
*dn
= in
->get_parent_dn();
5175 dn
->clear_replica_map();
5176 dout(10) << " trimming " << *dn
<< dendl
;
5177 dn
->dir
->remove_dentry(dn
);
5179 dout(10) << " trimming " << *in
<< dendl
;
5184 assert(rejoin_undef_inodes
.empty());
5187 void MDCache::rejoin_gather_finish()
5189 dout(10) << "rejoin_gather_finish" << dendl
;
5190 assert(mds
->is_rejoin());
5192 if (open_undef_inodes_dirfrags())
5195 if (process_imported_caps())
5198 choose_lock_states_and_reconnect_caps();
5200 identify_files_to_recover();
5203 // signal completion of fetches, rejoin_gather_finish, etc.
5204 assert(rejoin_ack_gather
.count(mds
->get_nodeid()));
5205 rejoin_ack_gather
.erase(mds
->get_nodeid());
5207 // did we already get our acks too?
5208 if (rejoin_ack_gather
.empty()) {
5209 // finally, kickstart past snap parent opens
5210 open_snap_parents();
5214 class C_MDC_RejoinOpenInoFinish
: public MDCacheContext
{
5217 C_MDC_RejoinOpenInoFinish(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
5218 void finish(int r
) override
{
5219 mdcache
->rejoin_open_ino_finish(ino
, r
);
5223 void MDCache::rejoin_open_ino_finish(inodeno_t ino
, int ret
)
5225 dout(10) << "open_caps_inode_finish ino " << ino
<< " ret " << ret
<< dendl
;
5228 cap_imports_missing
.insert(ino
);
5229 } else if (ret
== mds
->get_nodeid()) {
5230 assert(get_inode(ino
));
5232 auto p
= cap_imports
.find(ino
);
5233 assert(p
!= cap_imports
.end());
5234 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5235 assert(q
->second
.count(MDS_RANK_NONE
));
5236 assert(q
->second
.size() == 1);
5237 rejoin_export_caps(p
->first
, q
->first
, q
->second
[MDS_RANK_NONE
], ret
);
5239 cap_imports
.erase(p
);
5242 assert(cap_imports_num_opening
> 0);
5243 cap_imports_num_opening
--;
5245 if (cap_imports_num_opening
== 0) {
5246 if (rejoin_gather
.empty())
5247 rejoin_gather_finish();
5248 else if (rejoin_gather
.count(mds
->get_nodeid()))
5249 process_imported_caps();
5253 class C_MDC_RejoinSessionsOpened
: public MDCacheLogContext
{
5255 map
<client_t
,entity_inst_t
> client_map
;
5256 map
<client_t
,uint64_t> sseqmap
;
5258 C_MDC_RejoinSessionsOpened(MDCache
*c
, map
<client_t
,entity_inst_t
>& cm
) :
5259 MDCacheLogContext(c
), client_map(cm
) {}
5260 void finish(int r
) override
{
5262 mdcache
->rejoin_open_sessions_finish(client_map
, sseqmap
);
5266 void MDCache::rejoin_open_sessions_finish(map
<client_t
,entity_inst_t
> client_map
,
5267 map
<client_t
,uint64_t>& sseqmap
)
5269 dout(10) << "rejoin_open_sessions_finish" << dendl
;
5270 mds
->server
->finish_force_open_sessions(client_map
, sseqmap
);
5271 if (rejoin_gather
.empty())
5272 rejoin_gather_finish();
5275 bool MDCache::process_imported_caps()
5277 dout(10) << "process_imported_caps" << dendl
;
5279 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5280 CInode
*in
= get_inode(p
->first
);
5282 assert(in
->is_auth());
5283 cap_imports_missing
.erase(p
->first
);
5286 if (cap_imports_missing
.count(p
->first
) > 0)
5289 cap_imports_num_opening
++;
5290 dout(10) << " opening missing ino " << p
->first
<< dendl
;
5291 open_ino(p
->first
, (int64_t)-1, new C_MDC_RejoinOpenInoFinish(this, p
->first
), false);
5294 if (cap_imports_num_opening
> 0)
5297 // called by rejoin_gather_finish() ?
5298 if (rejoin_gather
.count(mds
->get_nodeid()) == 0) {
5299 // if sessions for imported caps are all open ?
5300 for (map
<client_t
,entity_inst_t
>::iterator p
= rejoin_client_map
.begin();
5301 p
!= rejoin_client_map
.end();
5303 if (!mds
->sessionmap
.have_session(entity_name_t::CLIENT(p
->first
.v
))) {
5304 C_MDC_RejoinSessionsOpened
*finish
= new C_MDC_RejoinSessionsOpened(this, rejoin_client_map
);
5305 version_t pv
= mds
->server
->prepare_force_open_sessions(rejoin_client_map
, finish
->sseqmap
);
5306 ESessions
*le
= new ESessions(pv
, rejoin_client_map
);
5307 mds
->mdlog
->start_submit_entry(le
, finish
);
5308 mds
->mdlog
->flush();
5309 rejoin_client_map
.clear();
5313 rejoin_client_map
.clear();
5315 // process caps that were exported by slave rename
5316 for (map
<inodeno_t
,pair
<mds_rank_t
,map
<client_t
,Capability::Export
> > >::iterator p
= rejoin_slave_exports
.begin();
5317 p
!= rejoin_slave_exports
.end();
5319 CInode
*in
= get_inode(p
->first
);
5321 for (map
<client_t
,Capability::Export
>::iterator q
= p
->second
.second
.begin();
5322 q
!= p
->second
.second
.end();
5324 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5327 Capability
*cap
= in
->get_client_cap(q
->first
);
5329 cap
= in
->add_client_cap(q
->first
, session
);
5330 cap
->merge(q
->second
, true);
5332 Capability::Import
& im
= rejoin_imported_caps
[p
->second
.first
][p
->first
][q
->first
];
5333 assert(cap
->get_last_seq() == im
.issue_seq
);
5334 assert(cap
->get_mseq() == im
.mseq
);
5335 cap
->set_cap_id(im
.cap_id
);
5336 // send cap import because we assigned a new cap ID
5337 do_cap_import(session
, in
, cap
, q
->second
.cap_id
, q
->second
.seq
, q
->second
.mseq
- 1,
5338 p
->second
.first
, CEPH_CAP_FLAG_AUTH
);
5341 rejoin_slave_exports
.clear();
5342 rejoin_imported_caps
.clear();
5344 // process cap imports
5345 // ino -> client -> frommds -> capex
5346 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ) {
5347 CInode
*in
= get_inode(p
->first
);
5349 dout(10) << " still missing ino " << p
->first
5350 << ", will try again after replayed client requests" << dendl
;
5354 assert(in
->is_auth());
5355 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5356 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5358 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5359 Capability
*cap
= in
->reconnect_cap(q
->first
, r
->second
, session
);
5360 add_reconnected_cap(q
->first
, in
->ino(), r
->second
);
5361 if (r
->first
>= 0) {
5362 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5364 do_cap_import(session
, in
, cap
, r
->second
.capinfo
.cap_id
, 0, 0, r
->first
, 0);
5366 Capability::Import
& im
= rejoin_imported_caps
[r
->first
][p
->first
][q
->first
];
5367 im
.cap_id
= cap
->get_cap_id();
5368 im
.issue_seq
= cap
->get_last_seq();
5369 im
.mseq
= cap
->get_mseq();
5373 cap_imports
.erase(p
++); // remove and move on
5378 rejoin_gather
.erase(mds
->get_nodeid());
5379 maybe_send_pending_rejoins();
5381 if (rejoin_gather
.empty() && rejoin_ack_gather
.count(mds
->get_nodeid()))
5382 rejoin_gather_finish();
5387 void MDCache::check_realm_past_parents(SnapRealm
*realm
, bool reconnect
)
5389 // are this realm's parents fully open?
5390 if (realm
->have_past_parents_open()) {
5391 dout(10) << " have past snap parents for realm " << *realm
5392 << " on " << *realm
->inode
<< dendl
;
5394 // finish off client snaprealm reconnects?
5395 auto p
= reconnected_snaprealms
.find(realm
->inode
->ino());
5396 if (p
!= reconnected_snaprealms
.end()) {
5397 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
5398 finish_snaprealm_reconnect(q
->first
, realm
, q
->second
);
5399 reconnected_snaprealms
.erase(p
);
5403 if (!missing_snap_parents
.count(realm
->inode
)) {
5404 dout(10) << " MISSING past snap parents for realm " << *realm
5405 << " on " << *realm
->inode
<< dendl
;
5406 realm
->inode
->get(CInode::PIN_OPENINGSNAPPARENTS
);
5407 missing_snap_parents
[realm
->inode
].size(); // just to get it into the map!
5409 dout(10) << " (already) MISSING past snap parents for realm " << *realm
5410 << " on " << *realm
->inode
<< dendl
;
5415 void MDCache::rebuild_need_snapflush(CInode
*head_in
, SnapRealm
*realm
,
5416 client_t client
, snapid_t snap_follows
)
5418 dout(10) << "rebuild_need_snapflush " << snap_follows
<< " on " << *head_in
<< dendl
;
5420 const set
<snapid_t
>& snaps
= realm
->get_snaps();
5421 snapid_t follows
= snap_follows
;
5424 CInode
*in
= pick_inode_snap(head_in
, follows
);
5427 dout(10) << " need snapflush from client." << client
<< " on " << *in
<< dendl
;
5429 /* TODO: we can check the reconnected/flushing caps to find
5430 * which locks need gathering */
5431 for (int i
= 0; i
< num_cinode_locks
; i
++) {
5432 int lockid
= cinode_lock_info
[i
].lock
;
5433 SimpleLock
*lock
= in
->get_lock(lockid
);
5435 in
->client_snap_caps
[lockid
].insert(client
);
5437 lock
->set_state(LOCK_SNAP_SYNC
);
5438 lock
->get_wrlock(true);
5441 for (auto p
= snaps
.lower_bound(in
->first
);
5442 p
!= snaps
.end() && *p
<= in
->last
;
5444 head_in
->add_need_snapflush(in
, *p
, client
);
5452 * choose lock states based on reconnected caps
5454 void MDCache::choose_lock_states_and_reconnect_caps()
5456 dout(10) << "choose_lock_states_and_reconnect_caps" << dendl
;
5458 map
<client_t
,MClientSnap
*> splits
;
5460 for (auto i
: inode_map
) {
5461 CInode
*in
= i
.second
;
5463 if (in
->last
!= CEPH_NOSNAP
)
5466 if (in
->is_auth() && !in
->is_base() && in
->inode
.is_dirty_rstat())
5467 in
->mark_dirty_rstat();
5470 auto p
= reconnected_caps
.find(in
->ino());
5471 if (p
!= reconnected_caps
.end()) {
5472 for (const auto &it
: p
->second
)
5473 dirty_caps
|= it
.second
.dirty_caps
;
5475 in
->choose_lock_states(dirty_caps
);
5476 dout(15) << " chose lock states on " << *in
<< dendl
;
5478 SnapRealm
*realm
= in
->find_snaprealm();
5480 check_realm_past_parents(realm
, realm
== in
->snaprealm
);
5482 if (p
!= reconnected_caps
.end()) {
5483 bool missing_snap_parent
= false;
5484 // also, make sure client's cap is in the correct snaprealm.
5485 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5486 if (q
->second
.snap_follows
> 0 && q
->second
.snap_follows
< in
->first
- 1) {
5487 if (realm
->have_past_parents_open()) {
5488 rebuild_need_snapflush(in
, realm
, q
->first
, q
->second
.snap_follows
);
5490 missing_snap_parent
= true;
5494 if (q
->second
.realm_ino
== realm
->inode
->ino()) {
5495 dout(15) << " client." << q
->first
<< " has correct realm " << q
->second
.realm_ino
<< dendl
;
5497 dout(15) << " client." << q
->first
<< " has wrong realm " << q
->second
.realm_ino
5498 << " != " << realm
->inode
->ino() << dendl
;
5499 if (realm
->have_past_parents_open()) {
5500 // ok, include in a split message _now_.
5501 prepare_realm_split(realm
, q
->first
, in
->ino(), splits
);
5503 // send the split later.
5504 missing_snap_parent
= true;
5508 if (missing_snap_parent
)
5509 missing_snap_parents
[realm
->inode
].insert(in
);
5516 void MDCache::prepare_realm_split(SnapRealm
*realm
, client_t client
, inodeno_t ino
,
5517 map
<client_t
,MClientSnap
*>& splits
)
5520 if (splits
.count(client
) == 0) {
5521 splits
[client
] = snap
= new MClientSnap(CEPH_SNAP_OP_SPLIT
);
5522 snap
->head
.split
= realm
->inode
->ino();
5523 realm
->build_snap_trace(snap
->bl
);
5525 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
5526 p
!= realm
->open_children
.end();
5528 snap
->split_realms
.push_back((*p
)->inode
->ino());
5531 snap
= splits
[client
];
5532 snap
->split_inos
.push_back(ino
);
5535 void MDCache::send_snaps(map
<client_t
,MClientSnap
*>& splits
)
5537 dout(10) << "send_snaps" << dendl
;
5539 for (map
<client_t
,MClientSnap
*>::iterator p
= splits
.begin();
5542 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->first
.v
));
5544 dout(10) << " client." << p
->first
5545 << " split " << p
->second
->head
.split
5546 << " inos " << p
->second
->split_inos
5548 mds
->send_message_client_counted(p
->second
, session
);
5550 dout(10) << " no session for client." << p
->first
<< dendl
;
5559 * remove any items from logsegment open_file lists that don't have
5562 void MDCache::clean_open_file_lists()
5564 dout(10) << "clean_open_file_lists" << dendl
;
5566 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
5567 p
!= mds
->mdlog
->segments
.end();
5569 LogSegment
*ls
= p
->second
;
5571 elist
<CInode
*>::iterator q
= ls
->open_files
.begin(member_offset(CInode
, item_open_file
));
5575 if (in
->last
== CEPH_NOSNAP
) {
5576 if (!in
->is_any_caps_wanted()) {
5577 dout(10) << " unlisting unwanted/capless inode " << *in
<< dendl
;
5578 in
->item_open_file
.remove_myself();
5580 } else if (in
->last
!= CEPH_NOSNAP
) {
5581 if (in
->client_snap_caps
.empty()) {
5582 dout(10) << " unlisting flushed snap inode " << *in
<< dendl
;
5583 in
->item_open_file
.remove_myself();
5592 Capability
* MDCache::rejoin_import_cap(CInode
*in
, client_t client
, const cap_reconnect_t
& icr
, mds_rank_t frommds
)
5594 dout(10) << "rejoin_import_cap for client." << client
<< " from mds." << frommds
5595 << " on " << *in
<< dendl
;
5596 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5598 dout(10) << " no session for client." << client
<< dendl
;
5602 Capability
*cap
= in
->reconnect_cap(client
, icr
, session
);
5605 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5607 do_cap_import(session
, in
, cap
, icr
.capinfo
.cap_id
, 0, 0, frommds
, 0);
5613 void MDCache::export_remaining_imported_caps()
5615 dout(10) << "export_remaining_imported_caps" << dendl
;
5617 stringstream warn_str
;
5619 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5620 warn_str
<< " ino " << p
->first
<< "\n";
5621 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5622 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5624 // mark client caps stale.
5625 MClientCaps
*stale
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0, 0, 0, mds
->get_osd_epoch_barrier());
5626 stale
->set_cap_peer(0, 0, 0, -1, 0);
5627 mds
->send_message_client_counted(stale
, q
->first
);
5631 mds
->heartbeat_reset();
5634 for (map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator p
= cap_reconnect_waiters
.begin();
5635 p
!= cap_reconnect_waiters
.end();
5637 mds
->queue_waiters(p
->second
);
5639 cap_imports
.clear();
5640 cap_reconnect_waiters
.clear();
5642 if (warn_str
.peek() != EOF
) {
5643 mds
->clog
->warn() << "failed to reconnect caps for missing inodes:";
5644 mds
->clog
->warn(warn_str
);
5648 void MDCache::try_reconnect_cap(CInode
*in
, Session
*session
)
5650 client_t client
= session
->info
.get_client();
5651 const cap_reconnect_t
*rc
= get_replay_cap_reconnect(in
->ino(), client
);
5653 in
->reconnect_cap(client
, *rc
, session
);
5654 dout(10) << "try_reconnect_cap client." << client
5655 << " reconnect wanted " << ccap_string(rc
->capinfo
.wanted
)
5656 << " issue " << ccap_string(rc
->capinfo
.issued
)
5657 << " on " << *in
<< dendl
;
5658 remove_replay_cap_reconnect(in
->ino(), client
);
5660 if (in
->is_replicated()) {
5661 mds
->locker
->try_eval(in
, CEPH_CAP_LOCKS
);
5664 auto p
= reconnected_caps
.find(in
->ino());
5665 if (p
!= reconnected_caps
.end()) {
5666 auto q
= p
->second
.find(client
);
5667 if (q
!= p
->second
.end())
5668 dirty_caps
= q
->second
.dirty_caps
;
5670 in
->choose_lock_states(dirty_caps
);
5671 dout(15) << " chose lock states on " << *in
<< dendl
;
5674 map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator it
=
5675 cap_reconnect_waiters
.find(in
->ino());
5676 if (it
!= cap_reconnect_waiters
.end()) {
5677 mds
->queue_waiters(it
->second
);
5678 cap_reconnect_waiters
.erase(it
);
5686 // cap imports and delayed snap parent opens
5688 void MDCache::do_cap_import(Session
*session
, CInode
*in
, Capability
*cap
,
5689 uint64_t p_cap_id
, ceph_seq_t p_seq
, ceph_seq_t p_mseq
,
5690 int peer
, int p_flags
)
5692 client_t client
= session
->info
.inst
.name
.num();
5693 SnapRealm
*realm
= in
->find_snaprealm();
5694 if (realm
->have_past_parents_open()) {
5695 dout(10) << "do_cap_import " << session
->info
.inst
.name
<< " mseq " << cap
->get_mseq() << " on " << *in
<< dendl
;
5696 if (cap
->get_last_seq() == 0) // reconnected cap
5697 cap
->inc_last_seq();
5698 cap
->set_last_issue();
5699 cap
->set_last_issue_stamp(ceph_clock_now());
5701 MClientCaps
*reap
= new MClientCaps(CEPH_CAP_OP_IMPORT
,
5703 realm
->inode
->ino(),
5704 cap
->get_cap_id(), cap
->get_last_seq(),
5705 cap
->pending(), cap
->wanted(), 0,
5706 cap
->get_mseq(), mds
->get_osd_epoch_barrier());
5707 in
->encode_cap_message(reap
, cap
);
5708 realm
->build_snap_trace(reap
->snapbl
);
5709 reap
->set_cap_peer(p_cap_id
, p_seq
, p_mseq
, peer
, p_flags
);
5710 mds
->send_message_client_counted(reap
, session
);
5712 dout(10) << "do_cap_import missing past snap parents, delaying " << session
->info
.inst
.name
<< " mseq "
5713 << cap
->get_mseq() << " on " << *in
<< dendl
;
5715 cap
->inc_suppress();
5716 delayed_imported_caps
[client
].insert(in
);
5717 missing_snap_parents
[in
].size();
5721 void MDCache::do_delayed_cap_imports()
5723 dout(10) << "do_delayed_cap_imports" << dendl
;
5725 assert(delayed_imported_caps
.empty());
5728 struct C_MDC_OpenSnapParents
: public MDCacheContext
{
5729 explicit C_MDC_OpenSnapParents(MDCache
*c
) : MDCacheContext(c
) {}
5730 void finish(int r
) override
{
5731 mdcache
->open_snap_parents();
5735 void MDCache::open_snap_parents()
5737 dout(10) << "open_snap_parents" << dendl
;
5739 map
<client_t
,MClientSnap
*> splits
;
5740 MDSGatherBuilder
gather(g_ceph_context
);
5742 auto p
= missing_snap_parents
.begin();
5743 while (p
!= missing_snap_parents
.end()) {
5744 CInode
*in
= p
->first
;
5745 assert(in
->snaprealm
);
5746 if (in
->snaprealm
->open_parents(gather
.new_sub())) {
5747 dout(10) << " past parents now open on " << *in
<< dendl
;
5749 for (CInode
*child
: p
->second
) {
5750 auto q
= reconnected_caps
.find(child
->ino());
5751 assert(q
!= reconnected_caps
.end());
5752 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5753 if (r
->second
.snap_follows
> 0 && r
->second
.snap_follows
< in
->first
- 1) {
5754 rebuild_need_snapflush(child
, in
->snaprealm
, r
->first
, r
->second
.snap_follows
);
5756 // make sure client's cap is in the correct snaprealm.
5757 if (r
->second
.realm_ino
!= in
->ino()) {
5758 prepare_realm_split(in
->snaprealm
, r
->first
, child
->ino(), splits
);
5763 missing_snap_parents
.erase(p
++);
5765 in
->put(CInode::PIN_OPENINGSNAPPARENTS
);
5767 // finish off client snaprealm reconnects?
5768 map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator q
= reconnected_snaprealms
.find(in
->ino());
5769 if (q
!= reconnected_snaprealms
.end()) {
5770 for (map
<client_t
,snapid_t
>::iterator r
= q
->second
.begin();
5771 r
!= q
->second
.end();
5773 finish_snaprealm_reconnect(r
->first
, in
->snaprealm
, r
->second
);
5774 reconnected_snaprealms
.erase(q
);
5777 dout(10) << " opening past parents on " << *in
<< dendl
;
5784 if (gather
.has_subs()) {
5785 dout(10) << "open_snap_parents - waiting for "
5786 << gather
.num_subs_remaining() << dendl
;
5787 gather
.set_finisher(new C_MDC_OpenSnapParents(this));
5790 if (!reconnected_snaprealms
.empty()) {
5791 stringstream warn_str
;
5792 for (map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator p
= reconnected_snaprealms
.begin();
5793 p
!= reconnected_snaprealms
.end();
5795 warn_str
<< " unconnected snaprealm " << p
->first
<< "\n";
5796 for (map
<client_t
,snapid_t
>::iterator q
= p
->second
.begin();
5797 q
!= p
->second
.end();
5799 warn_str
<< " client." << q
->first
<< " snapid " << q
->second
<< "\n";
5801 mds
->clog
->warn() << "open_snap_parents has:";
5802 mds
->clog
->warn(warn_str
);
5804 assert(rejoin_waiters
.empty());
5805 assert(missing_snap_parents
.empty());
5806 dout(10) << "open_snap_parents - all open" << dendl
;
5807 do_delayed_cap_imports();
5809 assert(rejoin_done
);
5810 rejoin_done
.release()->complete(0);
5811 reconnected_caps
.clear();
5815 bool MDCache::open_undef_inodes_dirfrags()
5817 dout(10) << "open_undef_inodes_dirfrags "
5818 << rejoin_undef_inodes
.size() << " inodes "
5819 << rejoin_undef_dirfrags
.size() << " dirfrags" << dendl
;
5821 set
<CDir
*> fetch_queue
= rejoin_undef_dirfrags
;
5823 for (set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5824 p
!= rejoin_undef_inodes
.end();
5827 assert(!in
->is_base());
5828 fetch_queue
.insert(in
->get_parent_dir());
5831 if (fetch_queue
.empty())
5834 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_RejoinGatherFinish(this));
5835 for (set
<CDir
*>::iterator p
= fetch_queue
.begin();
5836 p
!= fetch_queue
.end();
5839 CInode
*diri
= dir
->get_inode();
5840 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
5842 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
5843 assert(diri
->dirfragtree
.is_leaf(dir
->get_frag()));
5844 dir
->fetch(gather
.new_sub());
5846 assert(gather
.has_subs());
5851 void MDCache::opened_undef_inode(CInode
*in
) {
5852 dout(10) << "opened_undef_inode " << *in
<< dendl
;
5853 rejoin_undef_inodes
.erase(in
);
5855 // FIXME: re-hash dentries if necessary
5856 assert(in
->inode
.dir_layout
.dl_dir_hash
== g_conf
->mds_default_dir_hash
);
5857 if (in
->has_dirfrags() && !in
->dirfragtree
.is_leaf(frag_t())) {
5858 CDir
*dir
= in
->get_dirfrag(frag_t());
5860 rejoin_undef_dirfrags
.erase(dir
);
5861 in
->force_dirfrags();
5863 in
->get_dirfrags(ls
);
5864 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
)
5865 rejoin_undef_dirfrags
.insert(*p
);
5870 void MDCache::finish_snaprealm_reconnect(client_t client
, SnapRealm
*realm
, snapid_t seq
)
5872 if (seq
< realm
->get_newest_seq()) {
5873 dout(10) << "finish_snaprealm_reconnect client." << client
<< " has old seq " << seq
<< " < "
5874 << realm
->get_newest_seq()
5875 << " on " << *realm
<< dendl
;
5877 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5879 MClientSnap
*snap
= new MClientSnap(CEPH_SNAP_OP_UPDATE
);
5880 realm
->build_snap_trace(snap
->bl
);
5881 mds
->send_message_client_counted(snap
, session
);
5883 dout(10) << " ...or not, no session for this client!" << dendl
;
5886 dout(10) << "finish_snaprealm_reconnect client." << client
<< " up to date"
5887 << " on " << *realm
<< dendl
;
5893 void MDCache::rejoin_send_acks()
5895 dout(7) << "rejoin_send_acks" << dendl
;
5898 for (map
<mds_rank_t
, set
<CInode
*> >::iterator p
= rejoin_unlinked_inodes
.begin();
5899 p
!= rejoin_unlinked_inodes
.end();
5901 for (set
<CInode
*>::iterator q
= p
->second
.begin();
5902 q
!= p
->second
.end();
5905 dout(7) << " unlinked inode " << *in
<< dendl
;
5907 if (!in
->is_replica(p
->first
))
5910 CDentry
*dn
= in
->get_parent_dn();
5911 if (dn
->is_replica(p
->first
))
5913 dn
->add_replica(p
->first
);
5914 CDir
*dir
= dn
->get_dir();
5915 if (dir
->is_replica(p
->first
))
5917 dir
->add_replica(p
->first
);
5918 in
= dir
->get_inode();
5919 if (in
->is_replica(p
->first
))
5921 in
->add_replica(p
->first
);
5927 rejoin_unlinked_inodes
.clear();
5929 // send acks to everyone in the recovery set
5930 map
<mds_rank_t
,MMDSCacheRejoin
*> acks
;
5931 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
5932 p
!= recovery_set
.end();
5934 if (rejoin_ack_sent
.count(*p
))
5936 acks
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
5939 rejoin_ack_sent
= recovery_set
;
5942 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
5943 p
!= subtrees
.end();
5945 CDir
*dir
= p
->first
;
5946 if (!dir
->is_auth())
5948 dout(10) << "subtree " << *dir
<< dendl
;
5950 // auth items in this subtree
5954 while (!dq
.empty()) {
5955 CDir
*dir
= dq
.front();
5959 for (auto &r
: dir
->get_replicas()) {
5960 auto it
= acks
.find(r
.first
);
5961 if (it
== acks
.end())
5963 it
->second
->add_strong_dirfrag(dir
->dirfrag(), ++r
.second
, dir
->dir_rep
);
5964 it
->second
->add_dirfrag_base(dir
);
5967 for (CDir::map_t::iterator q
= dir
->items
.begin();
5968 q
!= dir
->items
.end();
5970 CDentry
*dn
= q
->second
;
5971 CDentry::linkage_t
*dnl
= dn
->get_linkage();
5975 if (dnl
->is_primary())
5976 in
= dnl
->get_inode();
5979 for (auto &r
: dn
->get_replicas()) {
5980 auto it
= acks
.find(r
.first
);
5981 if (it
== acks
.end())
5983 it
->second
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
5984 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
5985 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
5986 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
5988 dn
->lock
.get_replica_state());
5989 // peer missed MDentrylink message ?
5990 if (in
&& !in
->is_replica(r
.first
))
5991 in
->add_replica(r
.first
);
5997 for (auto &r
: in
->get_replicas()) {
5998 auto it
= acks
.find(r
.first
);
5999 if (it
== acks
.end())
6001 it
->second
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
6003 in
->_encode_locks_state_for_rejoin(bl
, r
.first
);
6004 it
->second
->add_inode_locks(in
, ++r
.second
, bl
);
6007 // subdirs in this subtree?
6008 in
->get_nested_dirfrags(dq
);
6014 if (root
&& root
->is_auth())
6015 for (auto &r
: root
->get_replicas()) {
6016 auto it
= acks
.find(r
.first
);
6017 if (it
== acks
.end())
6019 it
->second
->add_inode_base(root
, mds
->mdsmap
->get_up_features());
6021 root
->_encode_locks_state_for_rejoin(bl
, r
.first
);
6022 it
->second
->add_inode_locks(root
, ++r
.second
, bl
);
6025 for (auto &r
: myin
->get_replicas()) {
6026 auto it
= acks
.find(r
.first
);
6027 if (it
== acks
.end())
6029 it
->second
->add_inode_base(myin
, mds
->mdsmap
->get_up_features());
6031 myin
->_encode_locks_state_for_rejoin(bl
, r
.first
);
6032 it
->second
->add_inode_locks(myin
, ++r
.second
, bl
);
6035 // include inode base for any inodes whose scatterlocks may have updated
6036 for (set
<CInode
*>::iterator p
= rejoin_potential_updated_scatterlocks
.begin();
6037 p
!= rejoin_potential_updated_scatterlocks
.end();
6040 for (const auto &r
: in
->get_replicas()) {
6041 auto it
= acks
.find(r
.first
);
6042 if (it
== acks
.end())
6044 it
->second
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
6049 for (auto p
= acks
.begin(); p
!= acks
.end(); ++p
) {
6050 ::encode(rejoin_imported_caps
[p
->first
], p
->second
->imported_caps
);
6051 mds
->send_message_mds(p
->second
, p
->first
);
6054 rejoin_imported_caps
.clear();
6057 class C_MDC_ReIssueCaps
: public MDCacheContext
{
6060 C_MDC_ReIssueCaps(MDCache
*mdc
, CInode
*i
) :
6061 MDCacheContext(mdc
), in(i
)
6063 in
->get(CInode::PIN_PTRWAITER
);
6065 void finish(int r
) override
{
6066 if (!mdcache
->mds
->locker
->eval(in
, CEPH_CAP_LOCKS
))
6067 mdcache
->mds
->locker
->issue_caps(in
);
6068 in
->put(CInode::PIN_PTRWAITER
);
6072 void MDCache::reissue_all_caps()
6074 dout(10) << "reissue_all_caps" << dendl
;
6076 for (auto p
: inode_map
) {
6077 CInode
*in
= p
.second
;
6078 if (in
->is_head() && in
->is_any_caps()) {
6079 // called by MDSRank::active_start(). There shouldn't be any frozen subtree.
6080 if (in
->is_frozen_inode()) {
6081 in
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDC_ReIssueCaps(this, in
));
6084 if (!mds
->locker
->eval(in
, CEPH_CAP_LOCKS
))
6085 mds
->locker
->issue_caps(in
);
6091 // ===============================================================================
6093 struct C_MDC_QueuedCow
: public MDCacheContext
{
6096 C_MDC_QueuedCow(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) :
6097 MDCacheContext(mdc
), in(i
), mut(m
) {}
6098 void finish(int r
) override
{
6099 mdcache
->_queued_file_recover_cow(in
, mut
);
6104 void MDCache::queue_file_recover(CInode
*in
)
6106 dout(10) << "queue_file_recover " << *in
<< dendl
;
6107 assert(in
->is_auth());
6111 SnapRealm *realm = in->find_snaprealm();
6112 set<snapid_t> s = realm->get_snaps();
6113 while (!s.empty() && *s.begin() < in->first)
6115 while (!s.empty() && *s.rbegin() > in->last)
6116 s.erase(*s.rbegin());
6117 dout(10) << " snaps in [" << in->first << "," << in->last << "] are " << s << dendl;
6119 inode_t *pi = in->project_inode();
6120 pi->version = in->pre_dirty();
6122 auto mut(std::make_shared<MutationImpl>());
6123 mut->ls = mds->mdlog->get_current_segment();
6124 EUpdate *le = new EUpdate(mds->mdlog, "queue_file_recover cow");
6125 mds->mdlog->start_entry(le);
6126 predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY);
6128 s.erase(*s.begin());
6129 while (!s.empty()) {
6130 snapid_t snapid = *s.begin();
6131 CInode *cow_inode = 0;
6132 journal_cow_inode(mut, &le->metablob, in, snapid-1, &cow_inode);
6134 recovery_queue.enqueue(cow_inode);
6135 s.erase(*s.begin());
6138 in->parent->first = in->first;
6139 le->metablob.add_primary_dentry(in->parent, in, true);
6140 mds->mdlog->submit_entry(le, new C_MDC_QueuedCow(this, in, mut));
6141 mds->mdlog->flush();
6145 recovery_queue
.enqueue(in
);
6148 void MDCache::_queued_file_recover_cow(CInode
*in
, MutationRef
& mut
)
6150 in
->pop_and_dirty_projected_inode(mut
->ls
);
6152 mds
->locker
->drop_locks(mut
.get());
6158 * called after recovery to recover file sizes for previously opened (for write)
6159 * files. that is, those where max_size > size.
6161 void MDCache::identify_files_to_recover()
6163 dout(10) << "identify_files_to_recover" << dendl
;
6164 for (auto p
: inode_map
) {
6165 CInode
*in
= p
.second
;
6169 if (in
->last
!= CEPH_NOSNAP
)
6172 // Only normal files need file size recovery
6173 if (!in
->is_file()) {
6177 bool recover
= false;
6178 for (map
<client_t
,client_writeable_range_t
>::iterator p
= in
->inode
.client_ranges
.begin();
6179 p
!= in
->inode
.client_ranges
.end();
6181 Capability
*cap
= in
->get_client_cap(p
->first
);
6183 dout(10) << " client." << p
->first
<< " has range " << p
->second
<< " but no cap on " << *in
<< dendl
;
6190 if (in
->filelock
.is_stable()) {
6191 in
->auth_pin(&in
->filelock
);
6193 assert(in
->filelock
.get_state() == LOCK_XLOCKSNAP
);
6195 in
->filelock
.set_state(LOCK_PRE_SCAN
);
6196 rejoin_recover_q
.push_back(in
);
6198 rejoin_check_q
.push_back(in
);
6203 void MDCache::start_files_to_recover()
6205 for (CInode
*in
: rejoin_check_q
) {
6206 if (in
->filelock
.get_state() == LOCK_XLOCKSNAP
)
6207 mds
->locker
->issue_caps(in
);
6208 mds
->locker
->check_inode_max_size(in
);
6210 rejoin_check_q
.clear();
6211 for (CInode
*in
: rejoin_recover_q
) {
6212 mds
->locker
->file_recover(&in
->filelock
);
6214 if (!rejoin_recover_q
.empty()) {
6215 rejoin_recover_q
.clear();
6220 void MDCache::do_file_recover()
6222 recovery_queue
.advance();
6225 // ===============================================================================
6228 // ----------------------------
6231 class C_MDC_RetryTruncate
: public MDCacheContext
{
6235 C_MDC_RetryTruncate(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6236 MDCacheContext(c
), in(i
), ls(l
) {}
6237 void finish(int r
) override
{
6238 mdcache
->_truncate_inode(in
, ls
);
6242 void MDCache::truncate_inode(CInode
*in
, LogSegment
*ls
)
6244 inode_t
*pi
= in
->get_projected_inode();
6245 dout(10) << "truncate_inode "
6246 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6250 ls
->truncating_inodes
.insert(in
);
6251 in
->get(CInode::PIN_TRUNCATING
);
6254 if (!in
->client_need_snapflush
.empty() &&
6255 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6256 assert(in
->filelock
.is_xlocked());
6257 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6258 mds
->locker
->issue_caps(in
);
6262 _truncate_inode(in
, ls
);
6265 struct C_IO_MDC_TruncateFinish
: public MDCacheIOContext
{
6268 C_IO_MDC_TruncateFinish(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6269 MDCacheIOContext(c
), in(i
), ls(l
) {}
6270 void finish(int r
) override
{
6271 assert(r
== 0 || r
== -ENOENT
);
6272 mdcache
->truncate_inode_finish(in
, ls
);
6276 void MDCache::_truncate_inode(CInode
*in
, LogSegment
*ls
)
6278 inode_t
*pi
= &in
->inode
;
6279 dout(10) << "_truncate_inode "
6280 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6281 << " on " << *in
<< dendl
;
6283 assert(pi
->is_truncating());
6284 assert(pi
->truncate_size
< (1ULL << 63));
6285 assert(pi
->truncate_from
< (1ULL << 63));
6286 assert(pi
->truncate_size
< pi
->truncate_from
);
6289 SnapRealm
*realm
= in
->find_snaprealm();
6290 SnapContext nullsnap
;
6291 const SnapContext
*snapc
;
6293 dout(10) << " realm " << *realm
<< dendl
;
6294 snapc
= &realm
->get_snap_context();
6296 dout(10) << " NO realm, using null context" << dendl
;
6298 assert(in
->last
== CEPH_NOSNAP
);
6300 dout(10) << "_truncate_inode snapc " << snapc
<< " on " << *in
<< dendl
;
6301 filer
.truncate(in
->inode
.ino
, &in
->inode
.layout
, *snapc
,
6302 pi
->truncate_size
, pi
->truncate_from
-pi
->truncate_size
,
6303 pi
->truncate_seq
, ceph::real_time::min(), 0,
6304 new C_OnFinisher(new C_IO_MDC_TruncateFinish(this, in
, ls
),
6308 struct C_MDC_TruncateLogged
: public MDCacheLogContext
{
6311 C_MDC_TruncateLogged(MDCache
*m
, CInode
*i
, MutationRef
& mu
) :
6312 MDCacheLogContext(m
), in(i
), mut(mu
) {}
6313 void finish(int r
) override
{
6314 mdcache
->truncate_inode_logged(in
, mut
);
6318 void MDCache::truncate_inode_finish(CInode
*in
, LogSegment
*ls
)
6320 dout(10) << "truncate_inode_finish " << *in
<< dendl
;
6322 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6323 assert(p
!= ls
->truncating_inodes
.end());
6324 ls
->truncating_inodes
.erase(p
);
6327 inode_t
*pi
= in
->project_inode();
6328 pi
->version
= in
->pre_dirty();
6329 pi
->truncate_from
= 0;
6330 pi
->truncate_pending
--;
6332 MutationRef
mut(new MutationImpl());
6333 mut
->ls
= mds
->mdlog
->get_current_segment();
6334 mut
->add_projected_inode(in
);
6336 EUpdate
*le
= new EUpdate(mds
->mdlog
, "truncate finish");
6337 mds
->mdlog
->start_entry(le
);
6338 CDentry
*dn
= in
->get_projected_parent_dn();
6339 le
->metablob
.add_dir_context(dn
->get_dir());
6340 le
->metablob
.add_primary_dentry(dn
, in
, true);
6341 le
->metablob
.add_truncate_finish(in
->ino(), ls
->seq
);
6343 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
6344 mds
->mdlog
->submit_entry(le
, new C_MDC_TruncateLogged(this, in
, mut
));
6346 // flush immediately if there are readers/writers waiting
6347 if (in
->is_waiter_for(CInode::WAIT_TRUNC
) ||
6348 (in
->get_caps_wanted() & (CEPH_CAP_FILE_RD
|CEPH_CAP_FILE_WR
)))
6349 mds
->mdlog
->flush();
6352 void MDCache::truncate_inode_logged(CInode
*in
, MutationRef
& mut
)
6354 dout(10) << "truncate_inode_logged " << *in
<< dendl
;
6356 mds
->locker
->drop_locks(mut
.get());
6359 in
->put(CInode::PIN_TRUNCATING
);
6360 in
->auth_unpin(this);
6362 list
<MDSInternalContextBase
*> waiters
;
6363 in
->take_waiting(CInode::WAIT_TRUNC
, waiters
);
6364 mds
->queue_waiters(waiters
);
6368 void MDCache::add_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6370 dout(20) << "add_recovered_truncate " << *in
<< " in log segment "
6371 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6372 ls
->truncating_inodes
.insert(in
);
6373 in
->get(CInode::PIN_TRUNCATING
);
6376 void MDCache::remove_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6378 dout(20) << "remove_recovered_truncate " << *in
<< " in log segment "
6379 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6380 // if we have the logseg the truncate started in, it must be in our list.
6381 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6382 assert(p
!= ls
->truncating_inodes
.end());
6383 ls
->truncating_inodes
.erase(p
);
6384 in
->put(CInode::PIN_TRUNCATING
);
6387 void MDCache::start_recovered_truncates()
6389 dout(10) << "start_recovered_truncates" << dendl
;
6390 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
6391 p
!= mds
->mdlog
->segments
.end();
6393 LogSegment
*ls
= p
->second
;
6394 for (set
<CInode
*>::iterator q
= ls
->truncating_inodes
.begin();
6395 q
!= ls
->truncating_inodes
.end();
6400 if (!in
->client_need_snapflush
.empty() &&
6401 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6402 assert(in
->filelock
.is_stable());
6403 in
->filelock
.set_state(LOCK_XLOCKDONE
);
6404 in
->auth_pin(&in
->filelock
);
6405 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6406 // start_files_to_recover will revoke caps
6409 _truncate_inode(in
, ls
);
6419 // ================================================================================
6422 void MDCache::trim_lru(uint64_t count
, map
<mds_rank_t
, MCacheExpire
*> &expiremap
)
6424 bool is_standby_replay
= mds
->is_standby_replay();
6425 std::vector
<CDentry
*> unexpirables
;
6426 uint64_t trimmed
= 0;
6428 dout(7) << "trim_lru trimming " << count
6429 << " items from LRU"
6430 << " size=" << lru
.lru_get_size()
6431 << " mid=" << lru
.lru_get_top()
6432 << " pintail=" << lru
.lru_get_pintail()
6433 << " pinned=" << lru
.lru_get_num_pinned()
6437 CDentry
*dn
= static_cast<CDentry
*>(bottom_lru
.lru_expire());
6440 if (trim_dentry(dn
, expiremap
)) {
6441 unexpirables
.push_back(dn
);
6447 for (auto &dn
: unexpirables
) {
6448 bottom_lru
.lru_insert_mid(dn
);
6450 unexpirables
.clear();
6452 // trim dentries from the LRU until count is reached
6453 while (cache_toofull() || count
> 0) {
6454 CDentry
*dn
= static_cast<CDentry
*>(lru
.lru_expire());
6458 if ((is_standby_replay
&& dn
->get_linkage()->inode
&&
6459 dn
->get_linkage()->inode
->item_open_file
.is_on_list())) {
6460 unexpirables
.push_back(dn
);
6461 } else if (trim_dentry(dn
, expiremap
)) {
6462 unexpirables
.push_back(dn
);
6465 if (count
> 0) count
--;
6469 for (auto &dn
: unexpirables
) {
6470 lru
.lru_insert_mid(dn
);
6472 unexpirables
.clear();
6474 dout(7) << "trim_lru trimmed " << trimmed
<< " items" << dendl
;
6478 * note: only called while MDS is active or stopping... NOT during recovery.
6479 * however, we may expire a replica whose authority is recovering.
6481 * @param count is number of dentries to try to expire
6483 bool MDCache::trim(uint64_t count
)
6485 uint64_t used
= cache_size();
6486 uint64_t limit
= cache_limit_memory();
6487 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
6489 dout(7) << "trim bytes_used=" << bytes2str(used
)
6490 << " limit=" << bytes2str(limit
)
6491 << " reservation=" << cache_reservation()
6492 << "% count=" << count
<< dendl
;
6494 // process delayed eval_stray()
6495 stray_manager
.advance_delayed();
6497 trim_lru(count
, expiremap
);
6499 // trim non-auth, non-bound subtrees
6500 for (auto p
= subtrees
.begin(); p
!= subtrees
.end();) {
6501 CDir
*dir
= p
->first
;
6503 CInode
*diri
= dir
->get_inode();
6504 if (dir
->is_auth()) {
6505 if (!diri
->is_auth() && !diri
->is_base() &&
6506 dir
->get_num_head_items() == 0) {
6507 if (dir
->state_test(CDir::STATE_EXPORTING
) ||
6508 !(mds
->is_active() || mds
->is_stopping()) ||
6509 dir
->is_freezing() || dir
->is_frozen())
6512 migrator
->export_empty_import(dir
);
6515 if (!diri
->is_auth()) {
6516 if (dir
->get_num_ref() > 1) // only subtree pin
6519 diri
->get_subtree_dirfrags(ls
);
6520 if (diri
->get_num_ref() > (int)ls
.size()) // only pinned by subtrees
6523 // don't trim subtree root if its auth MDS is recovering.
6524 // This simplify the cache rejoin code.
6525 if (dir
->is_subtree_root() &&
6526 rejoin_ack_gather
.count(dir
->get_dir_auth().first
))
6528 trim_dirfrag(dir
, 0, expiremap
);
6534 if (mds
->is_stopping() && root
) {
6536 root
->get_dirfrags(ls
);
6537 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6539 if (dir
->get_num_ref() == 1) // subtree pin
6540 trim_dirfrag(dir
, 0, expiremap
);
6542 if (root
->get_num_ref() == 0)
6543 trim_inode(0, root
, 0, expiremap
);
6546 std::set
<mds_rank_t
> stopping
;
6547 mds
->mdsmap
->get_mds_set(stopping
, MDSMap::STATE_STOPPING
);
6548 stopping
.erase(mds
->get_nodeid());
6549 for (auto rank
: stopping
) {
6550 CInode
* mdsdir_in
= get_inode(MDS_INO_MDSDIR(rank
));
6554 if (expiremap
.count(rank
) == 0) {
6555 expiremap
[rank
] = new MCacheExpire(mds
->get_nodeid());
6558 dout(20) << __func__
<< ": try expiring " << *mdsdir_in
<< " for stopping mds." << mds
<< dendl
;
6560 const bool aborted
= expire_recursive(mdsdir_in
, expiremap
);
6562 dout(20) << __func__
<< ": successfully expired mdsdir" << dendl
;
6564 mdsdir_in
->get_dirfrags(ls
);
6565 for (auto dir
: ls
) {
6566 if (dir
->get_num_ref() == 1) // subtree pin
6567 trim_dirfrag(dir
, dir
, expiremap
);
6569 if (mdsdir_in
->get_num_ref() == 0)
6570 trim_inode(NULL
, mdsdir_in
, NULL
, expiremap
);
6572 dout(20) << __func__
<< ": some unexpirable contents in mdsdir" << dendl
;
6576 // Other rank's base inodes (when I'm stopping)
6577 if (mds
->is_stopping()) {
6578 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
6579 p
!= base_inodes
.end(); ++p
) {
6580 if (MDS_INO_MDSDIR_OWNER((*p
)->ino()) != mds
->get_nodeid()) {
6581 dout(20) << __func__
<< ": maybe trimming base: " << *(*p
) << dendl
;
6582 if ((*p
)->get_num_ref() == 0) {
6583 trim_inode(NULL
, *p
, NULL
, expiremap
);
6589 // send any expire messages
6590 send_expire_messages(expiremap
);
6595 void MDCache::send_expire_messages(map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6598 for (map
<mds_rank_t
, MCacheExpire
*>::iterator it
= expiremap
.begin();
6599 it
!= expiremap
.end();
6601 if (mds
->is_cluster_degraded() &&
6602 (mds
->mdsmap
->get_state(it
->first
) < MDSMap::STATE_REJOIN
||
6603 (mds
->mdsmap
->get_state(it
->first
) == MDSMap::STATE_REJOIN
&&
6604 rejoin_sent
.count(it
->first
) == 0))) {
6608 dout(7) << "sending cache_expire to " << it
->first
<< dendl
;
6609 mds
->send_message_mds(it
->second
, it
->first
);
6614 bool MDCache::trim_dentry(CDentry
*dn
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6616 dout(12) << "trim_dentry " << *dn
<< dendl
;
6618 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6620 CDir
*dir
= dn
->get_dir();
6623 CDir
*con
= get_subtree_root(dir
);
6625 dout(12) << " in container " << *con
<< dendl
;
6627 dout(12) << " no container; under a not-yet-linked dir" << dendl
;
6628 assert(dn
->is_auth());
6631 // If replica dentry is not readable, it's likely we will receive
6632 // MDentryLink/MDentryUnlink message soon (It's possible we first
6633 // receive a MDentryUnlink message, then MDentryLink message)
6634 // MDentryLink message only replicates an inode, so we should
6635 // avoid trimming the inode's parent dentry. This is because that
6636 // unconnected replicas are problematic for subtree migration.
6637 if (!dn
->is_auth() && !dn
->lock
.can_read(-1) &&
6638 !dn
->get_dir()->get_inode()->is_stray())
6641 // adjust the dir state
6642 // NOTE: we can safely remove a clean, null dentry without effecting
6643 // directory completeness.
6644 // (check this _before_ we unlink the inode, below!)
6645 bool clear_complete
= false;
6646 if (!(dnl
->is_null() && dn
->is_clean()))
6647 clear_complete
= true;
6649 // unlink the dentry
6650 if (dnl
->is_remote()) {
6652 dir
->unlink_inode(dn
, false);
6653 } else if (dnl
->is_primary()) {
6654 // expire the inode, too.
6655 CInode
*in
= dnl
->get_inode();
6657 if (trim_inode(dn
, in
, con
, expiremap
))
6658 return true; // purging stray instead of trimming
6660 assert(dnl
->is_null());
6663 if (!dn
->is_auth()) {
6664 // notify dentry authority.
6665 mds_authority_t auth
= dn
->authority();
6667 for (int p
=0; p
<2; p
++) {
6668 mds_rank_t a
= auth
.first
;
6669 if (p
) a
= auth
.second
;
6670 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6671 if (mds
->get_nodeid() == auth
.second
&&
6672 con
->is_importing()) break; // don't send any expire while importing.
6673 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6675 dout(12) << " sending expire to mds." << a
<< " on " << *dn
<< dendl
;
6676 assert(a
!= mds
->get_nodeid());
6677 if (expiremap
.count(a
) == 0)
6678 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6679 expiremap
[a
]->add_dentry(con
->dirfrag(), dir
->dirfrag(), dn
->name
, dn
->last
, dn
->get_replica_nonce());
6684 if (dn
->last
== CEPH_NOSNAP
&& dir
->is_auth())
6685 dir
->add_to_bloom(dn
);
6686 dir
->remove_dentry(dn
);
6689 dir
->state_clear(CDir::STATE_COMPLETE
);
6691 if (mds
->logger
) mds
->logger
->inc(l_mds_inodes_expired
);
6696 void MDCache::trim_dirfrag(CDir
*dir
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6698 dout(15) << "trim_dirfrag " << *dir
<< dendl
;
6700 if (dir
->is_subtree_root()) {
6701 assert(!dir
->is_auth() ||
6702 (!dir
->is_replicated() && dir
->inode
->is_base()));
6703 remove_subtree(dir
); // remove from subtree map
6705 assert(dir
->get_num_ref() == 0);
6707 CInode
*in
= dir
->get_inode();
6709 if (!dir
->is_auth()) {
6710 mds_authority_t auth
= dir
->authority();
6712 // was this an auth delegation? (if so, slightly modified container)
6714 if (dir
->is_subtree_root()) {
6715 dout(12) << " subtree root, container is " << *dir
<< dendl
;
6717 condf
= dir
->dirfrag();
6719 condf
= con
->dirfrag();
6722 for (int p
=0; p
<2; p
++) {
6723 mds_rank_t a
= auth
.first
;
6724 if (p
) a
= auth
.second
;
6725 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6726 if (mds
->get_nodeid() == auth
.second
&&
6727 con
->is_importing()) break; // don't send any expire while importing.
6728 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6730 dout(12) << " sending expire to mds." << a
<< " on " << *dir
<< dendl
;
6731 assert(a
!= mds
->get_nodeid());
6732 if (expiremap
.count(a
) == 0)
6733 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6734 expiremap
[a
]->add_dir(condf
, dir
->dirfrag(), dir
->replica_nonce
);
6738 in
->close_dirfrag(dir
->dirfrag().frag
);
6742 * Try trimming an inode from the cache
6744 * @return true if the inode is still in cache, else false if it was trimmed
6746 bool MDCache::trim_inode(CDentry
*dn
, CInode
*in
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6748 dout(15) << "trim_inode " << *in
<< dendl
;
6749 assert(in
->get_num_ref() == 0);
6752 // If replica inode's dirfragtreelock is not readable, it's likely
6753 // some dirfrags of the inode are being fragmented and we will receive
6754 // MMDSFragmentNotify soon. MMDSFragmentNotify only replicates the new
6755 // dirfrags, so we should avoid trimming these dirfrags' parent inode.
6756 // This is because that unconnected replicas are problematic for
6757 // subtree migration.
6759 if (!in
->is_auth() && !in
->dirfragtreelock
.can_read(-1))
6764 in
->get_dirfrags(dfls
);
6765 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
6767 assert(!dir
->is_subtree_root());
6768 trim_dirfrag(dir
, con
? con
:dir
, expiremap
); // if no container (e.g. root dirfrag), use *p
6773 if (in
->is_auth()) {
6774 // eval stray after closing dirfrags
6775 if (dn
&& !dn
->state_test(CDentry::STATE_PURGING
)) {
6776 maybe_eval_stray(in
);
6777 if (dn
->state_test(CDentry::STATE_PURGING
) || dn
->get_num_ref() > 0)
6781 mds_authority_t auth
= in
->authority();
6785 df
= con
->dirfrag();
6787 df
= dirfrag_t(0,frag_t()); // must be a root or stray inode.
6789 for (int p
=0; p
<2; p
++) {
6790 mds_rank_t a
= auth
.first
;
6791 if (p
) a
= auth
.second
;
6792 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6793 if (con
&& mds
->get_nodeid() == auth
.second
&&
6794 con
->is_importing()) break; // don't send any expire while importing.
6795 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6797 dout(12) << " sending expire to mds." << a
<< " on " << *in
<< dendl
;
6798 assert(a
!= mds
->get_nodeid());
6799 if (expiremap
.count(a
) == 0)
6800 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6801 expiremap
[a
]->add_inode(df
, in
->vino(), in
->get_replica_nonce());
6806 if (in->is_auth()) {
6807 if (in->hack_accessed)
6808 mds->logger->inc("outt");
6810 mds->logger->inc("outut");
6811 mds->logger->fset("oututl", ceph_clock_now() - in->hack_load_stamp);
6818 dn
->get_dir()->unlink_inode(dn
, false);
6825 * trim_non_auth - remove any non-auth items from our cache
6827 * this reduces the amount of non-auth metadata in our cache, reducing the
6828 * load incurred by the rejoin phase.
6830 * the only non-auth items that remain are those that are needed to
6831 * attach our own subtrees to the root.
6833 * when we are done, all dentries will be in the top bit of the lru.
6835 * why we have to do this:
6836 * we may not have accurate linkage for non-auth items. which means we will
6837 * know which subtree it falls into, and can not be sure to declare it to the
6838 * correct authority.
6840 void MDCache::trim_non_auth()
6842 dout(7) << "trim_non_auth" << dendl
;
6844 // temporarily pin all subtree roots
6845 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6846 p
!= subtrees
.end();
6848 p
->first
->get(CDir::PIN_SUBTREETEMP
);
6850 list
<CDentry
*> auth_list
;
6852 // trim non-auth items from the lru
6855 if (bottom_lru
.lru_get_size() > 0)
6856 dn
= static_cast<CDentry
*>(bottom_lru
.lru_expire());
6857 if (!dn
&& lru
.lru_get_size() > 0)
6858 dn
= static_cast<CDentry
*>(lru
.lru_expire());
6862 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6864 if (dn
->is_auth()) {
6865 // add back into lru (at the top)
6866 auth_list
.push_back(dn
);
6868 if (dnl
->is_remote() && dnl
->get_inode() && !dnl
->get_inode()->is_auth())
6869 dn
->unlink_remote(dnl
);
6871 // non-auth. expire.
6872 CDir
*dir
= dn
->get_dir();
6875 // unlink the dentry
6876 dout(10) << " removing " << *dn
<< dendl
;
6877 if (dnl
->is_remote()) {
6878 dir
->unlink_inode(dn
, false);
6880 else if (dnl
->is_primary()) {
6881 CInode
*in
= dnl
->get_inode();
6882 dout(10) << " removing " << *in
<< dendl
;
6884 in
->get_dirfrags(ls
);
6885 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6887 assert(!subdir
->is_subtree_root());
6888 in
->close_dirfrag(subdir
->dirfrag().frag
);
6890 dir
->unlink_inode(dn
, false);
6894 assert(dnl
->is_null());
6897 assert(!dir
->has_bloom());
6898 dir
->remove_dentry(dn
);
6899 // adjust the dir state
6900 dir
->state_clear(CDir::STATE_COMPLETE
); // dir incomplete!
6901 // close empty non-auth dirfrag
6902 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0)
6903 dir
->inode
->close_dirfrag(dir
->get_frag());
6907 for (auto dn
: auth_list
) {
6908 if (dn
->state_test(CDentry::STATE_BOTTOMLRU
))
6909 bottom_lru
.lru_insert_mid(dn
);
6911 lru
.lru_insert_top(dn
);
6914 // move everything in the pintail to the top bit of the lru.
6915 lru
.lru_touch_entire_pintail();
6917 // unpin all subtrees
6918 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6919 p
!= subtrees
.end();
6921 p
->first
->put(CDir::PIN_SUBTREETEMP
);
6923 if (lru
.lru_get_size() == 0 &&
6924 bottom_lru
.lru_get_size() == 0) {
6925 // root, stray, etc.?
6926 auto p
= inode_map
.begin();
6927 while (p
!= inode_map
.end()) {
6928 CInode
*in
= p
->second
;
6930 if (!in
->is_auth()) {
6932 in
->get_dirfrags(ls
);
6933 for (list
<CDir
*>::iterator p
= ls
.begin();
6936 dout(10) << " removing " << **p
<< dendl
;
6937 assert((*p
)->get_num_ref() == 1); // SUBTREE
6938 remove_subtree((*p
));
6939 in
->close_dirfrag((*p
)->dirfrag().frag
);
6941 dout(10) << " removing " << *in
<< dendl
;
6942 assert(!in
->get_parent_dn());
6943 assert(in
->get_num_ref() == 0);
6953 * Recursively trim the subtree rooted at directory to remove all
6954 * CInodes/CDentrys/CDirs that aren't links to remote MDSes, or ancestors
6955 * of those links. This is used to clear invalid data out of the cache.
6956 * Note that it doesn't clear the passed-in directory, since that's not
6959 bool MDCache::trim_non_auth_subtree(CDir
*dir
)
6961 dout(10) << "trim_non_auth_subtree(" << dir
<< ") " << *dir
<< dendl
;
6963 bool keep_dir
= !can_trim_non_auth_dirfrag(dir
);
6965 CDir::map_t::iterator j
= dir
->begin();
6966 CDir::map_t::iterator i
= j
;
6967 while (j
!= dir
->end()) {
6969 CDentry
*dn
= i
->second
;
6970 dout(10) << "trim_non_auth_subtree(" << dir
<< ") Checking dentry " << dn
<< dendl
;
6971 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6972 if (dnl
->is_primary()) { // check for subdirectories, etc
6973 CInode
*in
= dnl
->get_inode();
6974 bool keep_inode
= false;
6976 list
<CDir
*> subdirs
;
6977 in
->get_dirfrags(subdirs
);
6978 for (list
<CDir
*>::iterator subdir
= subdirs
.begin();
6979 subdir
!= subdirs
.end();
6981 if ((*subdir
)->is_subtree_root()) {
6983 dout(10) << "trim_non_auth_subtree(" << dir
<< ") keeping " << **subdir
<< dendl
;
6985 if (trim_non_auth_subtree(*subdir
))
6988 in
->close_dirfrag((*subdir
)->get_frag());
6989 dir
->state_clear(CDir::STATE_COMPLETE
); // now incomplete!
6995 if (!keep_inode
) { // remove it!
6996 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing inode " << in
<< " with dentry" << dn
<< dendl
;
6997 dir
->unlink_inode(dn
, false);
6999 assert(!dir
->has_bloom());
7000 dir
->remove_dentry(dn
);
7002 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping inode " << in
<< " with dentry " << dn
<<dendl
;
7003 dn
->state_clear(CDentry::STATE_AUTH
);
7004 in
->state_clear(CInode::STATE_AUTH
);
7006 } else if (keep_dir
&& dnl
->is_null()) { // keep null dentry for slave rollback
7007 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping dentry " << dn
<<dendl
;
7008 } else { // just remove it
7009 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing dentry " << dn
<< dendl
;
7010 if (dnl
->is_remote())
7011 dir
->unlink_inode(dn
, false);
7012 dir
->remove_dentry(dn
);
7015 dir
->state_clear(CDir::STATE_AUTH
);
7017 * We've now checked all our children and deleted those that need it.
7018 * Now return to caller, and tell them if *we're* a keeper.
7020 return keep_dir
|| dir
->get_num_any();
7024 * during replay, when we determine a subtree is no longer ours, we
7025 * try to trim it from our cache. because subtrees must be connected
7026 * to the root, the fact that we can trim this tree may mean that our
7027 * children or parents can also be trimmed.
7029 void MDCache::try_trim_non_auth_subtree(CDir
*dir
)
7031 dout(10) << "try_trim_nonauth_subtree " << *dir
<< dendl
;
7033 // can we now trim child subtrees?
7035 get_subtree_bounds(dir
, bounds
);
7036 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
7038 if (bd
->get_dir_auth().first
!= mds
->get_nodeid() && // we are not auth
7039 bd
->get_num_any() == 0 && // and empty
7040 can_trim_non_auth_dirfrag(bd
)) {
7041 CInode
*bi
= bd
->get_inode();
7042 dout(10) << " closing empty non-auth child subtree " << *bd
<< dendl
;
7045 bi
->close_dirfrag(bd
->get_frag());
7049 if (trim_non_auth_subtree(dir
)) {
7051 try_subtree_merge(dir
);
7053 // can we trim this subtree (and possibly our ancestors) too?
7055 CInode
*diri
= dir
->get_inode();
7056 if (diri
->is_base()) {
7057 if (!diri
->is_root() && diri
->authority().first
!= mds
->get_nodeid()) {
7058 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
7059 remove_subtree(dir
);
7061 diri
->close_dirfrag(dir
->get_frag());
7063 dout(10) << " removing " << *diri
<< dendl
;
7064 assert(!diri
->get_parent_dn());
7065 assert(diri
->get_num_ref() == 0);
7071 CDir
*psub
= get_subtree_root(diri
->get_parent_dir());
7072 dout(10) << " parent subtree is " << *psub
<< dendl
;
7073 if (psub
->get_dir_auth().first
== mds
->get_nodeid())
7074 break; // we are auth, keep.
7076 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
7077 remove_subtree(dir
);
7079 diri
->close_dirfrag(dir
->get_frag());
7081 dout(10) << " parent subtree also non-auth: " << *psub
<< dendl
;
7082 if (trim_non_auth_subtree(psub
))
7091 void MDCache::standby_trim_segment(LogSegment
*ls
)
7093 ls
->new_dirfrags
.clear_list();
7094 ls
->open_files
.clear_list();
7096 while (!ls
->dirty_dirfrags
.empty()) {
7097 CDir
*dir
= ls
->dirty_dirfrags
.front();
7100 while (!ls
->dirty_inodes
.empty()) {
7101 CInode
*in
= ls
->dirty_inodes
.front();
7104 while (!ls
->dirty_dentries
.empty()) {
7105 CDentry
*dn
= ls
->dirty_dentries
.front();
7108 while (!ls
->dirty_parent_inodes
.empty()) {
7109 CInode
*in
= ls
->dirty_parent_inodes
.front();
7110 in
->clear_dirty_parent();
7112 while (!ls
->dirty_dirfrag_dir
.empty()) {
7113 CInode
*in
= ls
->dirty_dirfrag_dir
.front();
7114 in
->filelock
.remove_dirty();
7116 while (!ls
->dirty_dirfrag_nest
.empty()) {
7117 CInode
*in
= ls
->dirty_dirfrag_nest
.front();
7118 in
->nestlock
.remove_dirty();
7120 while (!ls
->dirty_dirfrag_dirfragtree
.empty()) {
7121 CInode
*in
= ls
->dirty_dirfrag_dirfragtree
.front();
7122 in
->dirfragtreelock
.remove_dirty();
7126 /* This function DOES put the passed message before returning */
7127 void MDCache::handle_cache_expire(MCacheExpire
*m
)
7129 mds_rank_t from
= mds_rank_t(m
->get_from());
7131 dout(7) << "cache_expire from mds." << from
<< dendl
;
7133 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
7138 set
<SimpleLock
*> gather_locks
;
7140 for (map
<dirfrag_t
,MCacheExpire::realm
>::iterator p
= m
->realms
.begin();
7141 p
!= m
->realms
.end();
7144 if (p
->first
.ino
> 0) {
7145 CInode
*expired_inode
= get_inode(p
->first
.ino
);
7146 assert(expired_inode
); // we had better have this.
7147 CDir
*parent_dir
= expired_inode
->get_approx_dirfrag(p
->first
.frag
);
7150 int export_state
= -1;
7151 if (parent_dir
->is_auth() && parent_dir
->is_exporting()) {
7152 export_state
= migrator
->get_export_state(parent_dir
);
7153 assert(export_state
>= 0);
7156 if (!parent_dir
->is_auth() ||
7157 (export_state
!= -1 &&
7158 ((export_state
== Migrator::EXPORT_WARNING
&&
7159 migrator
->export_has_warned(parent_dir
,from
)) ||
7160 export_state
== Migrator::EXPORT_EXPORTING
||
7161 export_state
== Migrator::EXPORT_LOGGINGFINISH
||
7162 (export_state
== Migrator::EXPORT_NOTIFYING
&&
7163 !migrator
->export_has_notified(parent_dir
,from
))))) {
7166 dout(7) << "delaying nonauth|warned expires for " << *parent_dir
<< dendl
;
7167 assert(parent_dir
->is_frozen_tree_root());
7169 // make a message container
7170 if (delayed_expire
[parent_dir
].count(from
) == 0)
7171 delayed_expire
[parent_dir
][from
] = new MCacheExpire(from
);
7173 // merge these expires into it
7174 delayed_expire
[parent_dir
][from
]->add_realm(p
->first
, p
->second
);
7177 assert(export_state
<= Migrator::EXPORT_PREPPING
||
7178 (export_state
== Migrator::EXPORT_WARNING
&&
7179 !migrator
->export_has_warned(parent_dir
, from
)));
7181 dout(7) << "expires for " << *parent_dir
<< dendl
;
7183 dout(7) << "containerless expires (root, stray inodes)" << dendl
;
7187 for (map
<vinodeno_t
,uint32_t>::iterator it
= p
->second
.inodes
.begin();
7188 it
!= p
->second
.inodes
.end();
7190 CInode
*in
= get_inode(it
->first
);
7191 unsigned nonce
= it
->second
;
7194 dout(0) << " inode expire on " << it
->first
<< " from " << from
7195 << ", don't have it" << dendl
;
7198 assert(in
->is_auth());
7199 dout(20) << __func__
<< ": expiring inode " << *in
<< dendl
;
7202 if (nonce
== in
->get_replica_nonce(from
)) {
7203 // remove from our cached_by
7204 dout(7) << " inode expire on " << *in
<< " from mds." << from
7205 << " cached_by was " << in
->get_replicas() << dendl
;
7206 inode_remove_replica(in
, from
, false, gather_locks
);
7209 // this is an old nonce, ignore expire.
7210 dout(7) << " inode expire on " << *in
<< " from mds." << from
7211 << " with old nonce " << nonce
7212 << " (current " << in
->get_replica_nonce(from
) << "), dropping"
7218 for (map
<dirfrag_t
,uint32_t>::iterator it
= p
->second
.dirs
.begin();
7219 it
!= p
->second
.dirs
.end();
7221 CDir
*dir
= get_dirfrag(it
->first
);
7222 unsigned nonce
= it
->second
;
7225 CInode
*diri
= get_inode(it
->first
.ino
);
7227 if (mds
->is_rejoin() &&
7228 rejoin_ack_gather
.count(mds
->get_nodeid()) && // haven't sent rejoin ack yet
7229 !diri
->is_replica(from
)) {
7231 diri
->get_nested_dirfrags(ls
);
7232 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7233 << " while rejoining, inode isn't replicated" << dendl
;
7234 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
7236 if (dir
->is_replica(from
)) {
7237 dout(7) << " dir expire on " << *dir
<< " from mds." << from
<< dendl
;
7238 dir
->remove_replica(from
);
7243 CDir
*other
= diri
->get_approx_dirfrag(it
->first
.frag
);
7245 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7246 << " have " << *other
<< ", mismatched frags, dropping" << dendl
;
7250 dout(0) << " dir expire on " << it
->first
<< " from " << from
7251 << ", don't have it" << dendl
;
7254 dout(20) << __func__
<< ": expiring dirfrag " << *dir
<< dendl
;
7256 assert(dir
->is_auth());
7259 if (nonce
== dir
->get_replica_nonce(from
)) {
7260 // remove from our cached_by
7261 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7262 << " replicas was " << dir
->get_replicas() << dendl
;
7263 dir
->remove_replica(from
);
7266 // this is an old nonce, ignore expire.
7267 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7268 << " with old nonce " << nonce
<< " (current " << dir
->get_replica_nonce(from
)
7269 << "), dropping" << dendl
;
7274 for (map
<dirfrag_t
, map
<pair
<string
,snapid_t
>,uint32_t> >::iterator pd
= p
->second
.dentries
.begin();
7275 pd
!= p
->second
.dentries
.end();
7277 dout(10) << " dn expires in dir " << pd
->first
<< dendl
;
7278 CInode
*diri
= get_inode(pd
->first
.ino
);
7280 CDir
*dir
= diri
->get_dirfrag(pd
->first
.frag
);
7283 dout(0) << " dn expires on " << pd
->first
<< " from " << from
7284 << ", must have refragmented" << dendl
;
7286 assert(dir
->is_auth());
7289 for (map
<pair
<string
,snapid_t
>,uint32_t>::iterator p
= pd
->second
.begin();
7290 p
!= pd
->second
.end();
7292 unsigned nonce
= p
->second
;
7296 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7298 // which dirfrag for this dentry?
7299 CDir
*dir
= diri
->get_dirfrag(diri
->pick_dirfrag(p
->first
.first
));
7301 assert(dir
->is_auth());
7302 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7307 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< " in " << *dir
<< dendl
;
7309 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< dendl
;
7313 if (nonce
== dn
->get_replica_nonce(from
)) {
7314 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
<< dendl
;
7315 dentry_remove_replica(dn
, from
, gather_locks
);
7318 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
7319 << " with old nonce " << nonce
<< " (current " << dn
->get_replica_nonce(from
)
7320 << "), dropping" << dendl
;
7329 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
7330 if (!(*p
)->is_stable())
7331 mds
->locker
->eval_gather(*p
);
7335 void MDCache::process_delayed_expire(CDir
*dir
)
7337 dout(7) << "process_delayed_expire on " << *dir
<< dendl
;
7338 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7339 p
!= delayed_expire
[dir
].end();
7341 handle_cache_expire(p
->second
);
7342 delayed_expire
.erase(dir
);
7345 void MDCache::discard_delayed_expire(CDir
*dir
)
7347 dout(7) << "discard_delayed_expire on " << *dir
<< dendl
;
7348 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7349 p
!= delayed_expire
[dir
].end();
7352 delayed_expire
.erase(dir
);
7355 void MDCache::inode_remove_replica(CInode
*in
, mds_rank_t from
, bool rejoin
,
7356 set
<SimpleLock
*>& gather_locks
)
7358 in
->remove_replica(from
);
7359 in
->mds_caps_wanted
.erase(from
);
7361 // note: this code calls _eval more often than it needs to!
7363 if (in
->authlock
.remove_replica(from
)) gather_locks
.insert(&in
->authlock
);
7364 if (in
->linklock
.remove_replica(from
)) gather_locks
.insert(&in
->linklock
);
7365 if (in
->snaplock
.remove_replica(from
)) gather_locks
.insert(&in
->snaplock
);
7366 if (in
->xattrlock
.remove_replica(from
)) gather_locks
.insert(&in
->xattrlock
);
7367 if (in
->flocklock
.remove_replica(from
)) gather_locks
.insert(&in
->flocklock
);
7368 if (in
->policylock
.remove_replica(from
)) gather_locks
.insert(&in
->policylock
);
7370 // If 'rejoin' is true and the scatter lock is in LOCK_MIX_* state.
7371 // Don't remove the recovering mds from lock's gathering list because
7372 // it may hold rejoined wrlocks.
7373 if (in
->dirfragtreelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->dirfragtreelock
);
7374 if (in
->filelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->filelock
);
7375 if (in
->nestlock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->nestlock
);
7378 void MDCache::dentry_remove_replica(CDentry
*dn
, mds_rank_t from
, set
<SimpleLock
*>& gather_locks
)
7380 dn
->remove_replica(from
);
7383 if (dn
->lock
.remove_replica(from
))
7384 gather_locks
.insert(&dn
->lock
);
7386 // Replicated strays might now be elegible for purge
7387 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7388 if (dnl
->is_primary()) {
7389 maybe_eval_stray(dnl
->get_inode());
7393 void MDCache::trim_client_leases()
7395 utime_t now
= ceph_clock_now();
7397 dout(10) << "trim_client_leases" << dendl
;
7399 for (int pool
=0; pool
<client_lease_pools
; pool
++) {
7400 int before
= client_leases
[pool
].size();
7401 if (client_leases
[pool
].empty())
7404 while (!client_leases
[pool
].empty()) {
7405 ClientLease
*r
= client_leases
[pool
].front();
7406 if (r
->ttl
> now
) break;
7407 CDentry
*dn
= static_cast<CDentry
*>(r
->parent
);
7408 dout(10) << " expiring client." << r
->client
<< " lease of " << *dn
<< dendl
;
7409 dn
->remove_client_lease(r
, mds
->locker
);
7411 int after
= client_leases
[pool
].size();
7412 dout(10) << "trim_client_leases pool " << pool
<< " trimmed "
7413 << (before
-after
) << " leases, " << after
<< " left" << dendl
;
7418 void MDCache::check_memory_usage()
7420 static MemoryModel
mm(g_ceph_context
);
7421 static MemoryModel::snap last
;
7423 static MemoryModel::snap baseline
= last
;
7425 // check client caps
7426 assert(CInode::count() == inode_map
.size() + snap_inode_map
.size() + num_shadow_inodes
);
7427 double caps_per_inode
= 0.0;
7428 if (CInode::count())
7429 caps_per_inode
= (double)Capability::count() / (double)CInode::count();
7431 dout(2) << "check_memory_usage"
7432 << " total " << last
.get_total()
7433 << ", rss " << last
.get_rss()
7434 << ", heap " << last
.get_heap()
7435 << ", baseline " << baseline
.get_heap()
7436 << ", buffers " << (buffer::get_total_alloc() >> 10)
7437 << ", " << num_inodes_with_caps
<< " / " << CInode::count() << " inodes have caps"
7438 << ", " << Capability::count() << " caps, " << caps_per_inode
<< " caps per inode"
7441 mds
->update_mlogger();
7442 mds
->mlogger
->set(l_mdm_rss
, last
.get_rss());
7443 mds
->mlogger
->set(l_mdm_heap
, last
.get_heap());
7445 if (cache_toofull()) {
7446 last_recall_state
= ceph_clock_now();
7447 mds
->server
->recall_client_state();
7450 // If the cache size had exceeded its limit, but we're back in bounds
7451 // now, free any unused pool memory so that our memory usage isn't
7452 // permanently bloated.
7453 if (exceeded_size_limit
&& !cache_toofull()) {
7454 // Only do this once we are back in bounds: otherwise the releases would
7455 // slow down whatever process caused us to exceed bounds to begin with
7456 if (ceph_using_tcmalloc()) {
7457 dout(2) << "check_memory_usage: releasing unused space from tcmalloc"
7459 ceph_heap_release_free_memory();
7461 exceeded_size_limit
= false;
7467 // =========================================================================================
7470 class C_MDC_ShutdownCheck
: public MDCacheContext
{
7472 explicit C_MDC_ShutdownCheck(MDCache
*m
) : MDCacheContext(m
) {}
7473 void finish(int) override
{
7474 mdcache
->shutdown_check();
7478 void MDCache::shutdown_check()
7480 dout(0) << "shutdown_check at " << ceph_clock_now() << dendl
;
7483 char old_val
[32] = { 0 };
7485 g_conf
->get_val("debug_mds", &o
, sizeof(old_val
));
7486 g_conf
->set_val("debug_mds", "10");
7487 g_conf
->apply_changes(NULL
);
7489 g_conf
->set_val("debug_mds", old_val
);
7490 g_conf
->apply_changes(NULL
);
7491 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7494 dout(0) << "lru size now " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7495 dout(0) << "log len " << mds
->mdlog
->get_num_events() << dendl
;
7498 if (mds
->objecter
->is_active()) {
7499 dout(0) << "objecter still active" << dendl
;
7500 mds
->objecter
->dump_active();
7505 void MDCache::shutdown_start()
7507 dout(2) << "shutdown_start" << dendl
;
7509 if (g_conf
->mds_shutdown_check
)
7510 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7512 // g_conf->debug_mds = 10;
7517 bool MDCache::shutdown_pass()
7519 dout(7) << "shutdown_pass" << dendl
;
7521 if (mds
->is_stopped()) {
7522 dout(7) << " already shut down" << dendl
;
7529 if (!shutdown_export_strays()) {
7530 dout(7) << "waiting for strays to migrate" << dendl
;
7534 // drop our reference to our stray dir inode
7535 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7537 strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
7538 strays
[i
]->state_clear(CInode::STATE_STRAYPINNED
);
7539 strays
[i
]->put(CInode::PIN_STRAY
);
7540 strays
[i
]->put_stickydirs();
7546 dout(5) << "lru size now " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7549 int num_auth_subtree
= 0;
7550 if (!subtrees
.empty() &&
7551 mds
->get_nodeid() != 0 &&
7552 migrator
->get_export_queue_size() == 0) {
7553 dout(7) << "looking for subtrees to export to mds0" << dendl
;
7555 for (map
<CDir
*, set
<CDir
*> >::iterator it
= subtrees
.begin();
7556 it
!= subtrees
.end();
7558 CDir
*dir
= it
->first
;
7559 if (dir
->get_inode()->is_mdsdir())
7561 if (dir
->is_auth()) {
7563 if (dir
->is_frozen() ||
7564 dir
->is_freezing() ||
7565 dir
->is_ambiguous_dir_auth() ||
7566 dir
->state_test(CDir::STATE_EXPORTING
))
7571 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7573 mds_rank_t dest
= dir
->get_inode()->authority().first
;
7574 if (dest
> 0 && !mds
->mdsmap
->is_active(dest
))
7576 dout(7) << "sending " << *dir
<< " back to mds." << dest
<< dendl
;
7577 migrator
->export_dir_nicely(dir
, dest
);
7581 if (num_auth_subtree
> 0) {
7582 dout(7) << "still have " << num_auth_subtree
<< " auth subtrees" << dendl
;
7587 // close out any sessions (and open files!) before we try to trim the log, etc.
7588 if (mds
->sessionmap
.have_unclosed_sessions()) {
7589 if (!mds
->server
->terminating_sessions
)
7590 mds
->server
->terminate_sessions();
7594 CDir
*mydir
= myin
? myin
->get_dirfrag(frag_t()) : NULL
;
7595 if (mydir
&& !mydir
->is_subtree_root())
7598 // subtrees map not empty yet?
7599 if (subtrees
.size() > (mydir
? 1 : 0)) {
7600 dout(7) << "still have " << num_subtrees() << " subtrees" << dendl
;
7602 migrator
->show_importing();
7603 migrator
->show_exporting();
7604 if (!migrator
->is_importing() && !migrator
->is_exporting())
7608 assert(!migrator
->is_exporting());
7609 assert(!migrator
->is_importing());
7611 // flush what we can from the log
7612 mds
->mdlog
->trim(0);
7613 if (mds
->mdlog
->get_num_segments() > 1) {
7614 dout(7) << "still >1 segments, waiting for log to trim" << dendl
;
7618 if ((myin
&& myin
->is_auth_pinned()) ||
7619 (mydir
&& mydir
->is_auth_pinned())) {
7620 dout(7) << "still have auth pinned objects" << dendl
;
7624 // (only do this once!)
7625 if (!mds
->mdlog
->is_capped()) {
7626 dout(7) << "capping the log" << dendl
;
7631 if (!mds
->mdlog
->empty()) {
7632 dout(7) << "waiting for log to flush.. " << mds
->mdlog
->get_num_events()
7633 << " in " << mds
->mdlog
->get_num_segments() << " segments" << dendl
;
7637 if (!did_shutdown_log_cap
) {
7638 // flush journal header
7639 dout(7) << "writing header for (now-empty) journal" << dendl
;
7640 assert(mds
->mdlog
->empty());
7641 mds
->mdlog
->write_head(0);
7642 // NOTE: filer active checker below will block us until this completes.
7643 did_shutdown_log_cap
= true;
7648 if (mds
->objecter
->is_active()) {
7649 dout(7) << "objecter still active" << dendl
;
7650 mds
->objecter
->dump_active();
7654 // trim what we can from the cache
7655 if (lru
.lru_get_size() > 0 || bottom_lru
.lru_get_size() > 0) {
7656 dout(7) << "there's still stuff in the cache: " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7662 // make mydir subtree go away
7664 if (mydir
->get_num_ref() > 1) { // subtree pin
7665 dout(7) << "there's still reference to mydir " << *mydir
<< dendl
;
7670 remove_subtree(mydir
);
7671 myin
->close_dirfrag(mydir
->get_frag());
7673 assert(subtrees
.empty());
7679 dout(2) << "shutdown done." << dendl
;
7683 bool MDCache::shutdown_export_strays()
7685 if (mds
->get_nodeid() == 0)
7688 dout(10) << "shutdown_export_strays" << dendl
;
7690 bool mds0_active
= mds
->mdsmap
->is_active(mds_rank_t(0));
7695 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7699 strays
[i
]->get_dirfrags(dfs
);
7702 for (std::list
<CDir
*>::iterator dfs_i
= dfs
.begin();
7703 dfs_i
!= dfs
.end(); ++dfs_i
)
7707 if (!dir
->is_complete()) {
7714 for (CDir::map_t::iterator p
= dir
->items
.begin();
7715 p
!= dir
->items
.end();
7717 CDentry
*dn
= p
->second
;
7718 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7725 if (dn
->state_test(CDentry::STATE_PURGING
)) {
7726 // Don't try to migrate anything that is actually
7727 // being purged right now
7731 if (shutdown_exported_strays
.count(dnl
->get_inode()->ino()) == 0) {
7732 shutdown_exported_strays
.insert(dnl
->get_inode()->ino());
7733 stray_manager
.migrate_stray(dn
, mds_rank_t(0)); // send to root!
7735 dout(10) << "already exporting " << *dn
<< dendl
;
7743 // ========= messaging ==============
7745 /* This function DOES put the passed message before returning */
7746 void MDCache::dispatch(Message
*m
)
7748 switch (m
->get_type()) {
7751 case MSG_MDS_RESOLVE
:
7752 handle_resolve(static_cast<MMDSResolve
*>(m
));
7754 case MSG_MDS_RESOLVEACK
:
7755 handle_resolve_ack(static_cast<MMDSResolveAck
*>(m
));
7759 case MSG_MDS_CACHEREJOIN
:
7760 handle_cache_rejoin(static_cast<MMDSCacheRejoin
*>(m
));
7763 case MSG_MDS_DISCOVER
:
7764 handle_discover(static_cast<MDiscover
*>(m
));
7766 case MSG_MDS_DISCOVERREPLY
:
7767 handle_discover_reply(static_cast<MDiscoverReply
*>(m
));
7770 case MSG_MDS_DIRUPDATE
:
7771 handle_dir_update(static_cast<MDirUpdate
*>(m
));
7774 case MSG_MDS_CACHEEXPIRE
:
7775 handle_cache_expire(static_cast<MCacheExpire
*>(m
));
7778 case MSG_MDS_DENTRYLINK
:
7779 handle_dentry_link(static_cast<MDentryLink
*>(m
));
7781 case MSG_MDS_DENTRYUNLINK
:
7782 handle_dentry_unlink(static_cast<MDentryUnlink
*>(m
));
7785 case MSG_MDS_FRAGMENTNOTIFY
:
7786 handle_fragment_notify(static_cast<MMDSFragmentNotify
*>(m
));
7789 case MSG_MDS_FINDINO
:
7790 handle_find_ino(static_cast<MMDSFindIno
*>(m
));
7792 case MSG_MDS_FINDINOREPLY
:
7793 handle_find_ino_reply(static_cast<MMDSFindInoReply
*>(m
));
7796 case MSG_MDS_OPENINO
:
7797 handle_open_ino(static_cast<MMDSOpenIno
*>(m
));
7799 case MSG_MDS_OPENINOREPLY
:
7800 handle_open_ino_reply(static_cast<MMDSOpenInoReply
*>(m
));
7804 derr
<< "cache unknown message " << m
->get_type() << dendl
;
7805 assert(0 == "cache unknown message");
7809 MDSInternalContextBase
*MDCache::_get_waiter(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
)
7812 dout(20) << "_get_waiter retryrequest" << dendl
;
7813 return new C_MDS_RetryRequest(this, mdr
);
7815 dout(20) << "_get_waiter retrymessage" << dendl
;
7816 return new C_MDS_RetryMessage(mds
, req
);
7822 int MDCache::path_traverse(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
, // who
7823 const filepath
& path
, // what
7824 vector
<CDentry
*> *pdnvec
, // result
7828 bool discover
= (onfail
== MDS_TRAVERSE_DISCOVER
);
7829 bool null_okay
= (onfail
== MDS_TRAVERSE_DISCOVERXLOCK
);
7830 bool forward
= (onfail
== MDS_TRAVERSE_FORWARD
);
7832 assert(mdr
|| req
|| fin
);
7833 assert(!forward
|| mdr
|| req
); // forward requires a request
7835 snapid_t snapid
= CEPH_NOSNAP
;
7837 mdr
->snapid
= snapid
;
7839 client_t client
= (mdr
&& mdr
->reqid
.name
.is_client()) ? mdr
->reqid
.name
.num() : -1;
7841 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse
);
7843 dout(7) << "traverse: opening base ino " << path
.get_ino() << " snap " << snapid
<< dendl
;
7844 CInode
*cur
= get_inode(path
.get_ino());
7846 if (MDS_INO_IS_MDSDIR(path
.get_ino()))
7847 open_foreign_mdsdir(path
.get_ino(), _get_waiter(mdr
, req
, fin
));
7849 //ceph_abort(); // hrm.. broken
7854 if (cur
->state_test(CInode::STATE_PURGING
))
7857 // make sure snaprealm are open...
7858 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
7859 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
7870 while (depth
< path
.depth()) {
7871 dout(12) << "traverse: path seg depth " << depth
<< " '" << path
[depth
]
7872 << "' snapid " << snapid
<< dendl
;
7874 if (!cur
->is_dir()) {
7875 dout(7) << "traverse: " << *cur
<< " not a dir " << dendl
;
7879 // walk into snapdir?
7880 if (path
[depth
].length() == 0) {
7881 dout(10) << "traverse: snapdir" << dendl
;
7884 snapid
= CEPH_SNAPDIR
;
7885 mdr
->snapid
= snapid
;
7889 // walk thru snapdir?
7890 if (snapid
== CEPH_SNAPDIR
) {
7893 SnapRealm
*realm
= cur
->find_snaprealm();
7894 snapid
= realm
->resolve_snapname(path
[depth
], cur
->ino());
7895 dout(10) << "traverse: snap " << path
[depth
] << " -> " << snapid
<< dendl
;
7898 mdr
->snapid
= snapid
;
7904 frag_t fg
= cur
->pick_dirfrag(path
[depth
]);
7905 CDir
*curdir
= cur
->get_dirfrag(fg
);
7907 if (cur
->is_auth()) {
7908 // parent dir frozen_dir?
7909 if (cur
->is_frozen()) {
7910 dout(7) << "traverse: " << *cur
<< " is frozen, waiting" << dendl
;
7911 cur
->add_waiter(CDir::WAIT_UNFREEZE
, _get_waiter(mdr
, req
, fin
));
7914 curdir
= cur
->get_or_open_dirfrag(this, fg
);
7917 dout(10) << "traverse: need dirfrag " << fg
<< ", doing discover from " << *cur
<< dendl
;
7918 discover_path(cur
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
7920 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
7926 #ifdef MDS_VERIFY_FRAGSTAT
7927 if (curdir
->is_complete())
7928 curdir
->verify_fragstat();
7933 if (curdir->is_frozen()) {
7935 // FIXME: traverse is allowed?
7936 dout(7) << "traverse: " << *curdir << " is frozen, waiting" << dendl;
7937 curdir->add_waiter(CDir::WAIT_UNFREEZE, _get_waiter(mdr, req, fin));
7938 if (onfinish) delete onfinish;
7943 // Before doing dirfrag->dn lookup, compare with DamageTable's
7944 // record of which dentries were unreadable
7945 if (mds
->damage_table
.is_dentry_damaged(curdir
, path
[depth
], snapid
)) {
7946 dout(4) << "traverse: stopped lookup at damaged dentry "
7947 << *curdir
<< "/" << path
[depth
] << " snap=" << snapid
<< dendl
;
7952 CDentry
*dn
= curdir
->lookup(path
[depth
], snapid
);
7953 CDentry::linkage_t
*dnl
= dn
? dn
->get_projected_linkage() : 0;
7955 // null and last_bit and xlocked by me?
7956 if (dnl
&& dnl
->is_null() && null_okay
) {
7957 dout(10) << "traverse: hit null dentry at tail of traverse, succeeding" << dendl
;
7959 pdnvec
->push_back(dn
);
7966 dn
->lock
.is_xlocked() &&
7967 dn
->lock
.get_xlock_by() != mdr
&&
7968 !dn
->lock
.can_read(client
) &&
7969 (dnl
->is_null() || forward
)) {
7970 dout(10) << "traverse: xlocked dentry at " << *dn
<< dendl
;
7971 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7972 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_lock
);
7973 mds
->mdlog
->flush();
7977 // can we conclude ENOENT?
7978 if (dnl
&& dnl
->is_null()) {
7979 if (dn
->lock
.can_read(client
) ||
7980 (dn
->lock
.is_xlocked() && dn
->lock
.get_xlock_by() == mdr
)) {
7981 dout(10) << "traverse: miss on null+readable dentry " << path
[depth
] << " " << *dn
<< dendl
;
7983 if (depth
== path
.depth() - 1)
7984 pdnvec
->push_back(dn
);
7986 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
7990 dout(10) << "miss on dentry " << *dn
<< ", can't read due to lock" << dendl
;
7991 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7996 if (dnl
&& !dnl
->is_null()) {
7997 CInode
*in
= dnl
->get_inode();
7999 // do we have inode?
8001 assert(dnl
->is_remote());
8003 in
= get_inode(dnl
->get_remote_ino());
8005 dout(7) << "linking in remote in " << *in
<< dendl
;
8006 dn
->link_remote(dnl
, in
);
8008 dout(7) << "remote link to " << dnl
->get_remote_ino() << ", which i don't have" << dendl
;
8009 assert(mdr
); // we shouldn't hit non-primary dentries doing a non-mdr traversal!
8010 if (mds
->damage_table
.is_remote_damaged(dnl
->get_remote_ino())) {
8011 dout(4) << "traverse: remote dentry points to damaged ino "
8015 open_remote_dentry(dn
, true, _get_waiter(mdr
, req
, fin
),
8016 (null_okay
&& depth
== path
.depth() - 1));
8017 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_remote_ino
);
8023 // make sure snaprealm are open...
8024 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
8025 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
8029 // add to trace, continue.
8032 pdnvec
->push_back(dn
);
8040 // MISS. dentry doesn't exist.
8041 dout(12) << "traverse: miss on dentry " << path
[depth
] << " in " << *curdir
<< dendl
;
8043 if (curdir
->is_auth()) {
8045 if (curdir
->is_complete() ||
8046 (snapid
== CEPH_NOSNAP
&&
8047 curdir
->has_bloom() &&
8048 !curdir
->is_in_bloom(path
[depth
]))){
8051 // instantiate a null dn?
8052 if (depth
< path
.depth()-1){
8053 dout(20) << " didn't traverse full path; not returning pdnvec" << dendl
;
8056 ceph_abort(); // should have fallen out in ->is_null() check above
8057 } else if (curdir
->is_frozen()) {
8058 dout(20) << " not adding null to frozen dir " << dendl
;
8059 } else if (snapid
< CEPH_MAXSNAP
) {
8060 dout(20) << " not adding null for snapid " << snapid
<< dendl
;
8062 // create a null dentry
8063 dn
= curdir
->add_null_dentry(path
[depth
]);
8064 dout(20) << " added null " << *dn
<< dendl
;
8067 pdnvec
->push_back(dn
);
8069 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
8074 // Check DamageTable for missing fragments before trying to fetch
8076 if (mds
->damage_table
.is_dirfrag_damaged(curdir
)) {
8077 dout(4) << "traverse: damaged dirfrag " << *curdir
8078 << ", blocking fetch" << dendl
;
8082 // directory isn't complete; reload
8083 dout(7) << "traverse: incomplete dir contents for " << *cur
<< ", fetching" << dendl
;
8085 curdir
->fetch(_get_waiter(mdr
, req
, fin
), path
[depth
]);
8086 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_dir_fetch
);
8090 // dirfrag/dentry is not mine.
8091 mds_authority_t dauth
= curdir
->authority();
8094 snapid
&& mdr
&& mdr
->client_request
&&
8095 (int)depth
< mdr
->client_request
->get_num_fwd()) {
8096 dout(7) << "traverse: snap " << snapid
<< " and depth " << depth
8097 << " < fwd " << mdr
->client_request
->get_num_fwd()
8098 << ", discovering instead of forwarding" << dendl
;
8102 if ((discover
|| null_okay
)) {
8103 dout(7) << "traverse: discover from " << path
[depth
] << " from " << *curdir
<< dendl
;
8104 discover_path(curdir
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
8106 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
8111 dout(7) << "traverse: not auth for " << path
<< " in " << *curdir
<< dendl
;
8113 if (curdir
->is_ambiguous_auth()) {
8115 dout(7) << "traverse: waiting for single auth in " << *curdir
<< dendl
;
8116 curdir
->add_waiter(CDir::WAIT_SINGLEAUTH
, _get_waiter(mdr
, req
, fin
));
8120 dout(7) << "traverse: forwarding, not auth for " << *curdir
<< dendl
;
8123 request_forward(mdr
, dauth
.first
);
8125 mds
->forward_message_mds(req
, dauth
.first
);
8127 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_forward
);
8128 assert(fin
== NULL
);
8133 ceph_abort(); // i shouldn't get here
8137 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_hit
);
8138 dout(10) << "path_traverse finish on snapid " << snapid
<< dendl
;
8140 assert(mdr
->snapid
== snapid
);
8144 CInode
*MDCache::cache_traverse(const filepath
& fp
)
8146 dout(10) << "cache_traverse " << fp
<< dendl
;
8150 in
= get_inode(fp
.get_ino());
8156 for (unsigned i
= 0; i
< fp
.depth(); i
++) {
8157 const string
& dname
= fp
[i
];
8158 frag_t fg
= in
->pick_dirfrag(dname
);
8159 dout(20) << " " << i
<< " " << dname
<< " frag " << fg
<< " from " << *in
<< dendl
;
8160 CDir
*curdir
= in
->get_dirfrag(fg
);
8163 CDentry
*dn
= curdir
->lookup(dname
, CEPH_NOSNAP
);
8166 in
= dn
->get_linkage()->get_inode();
8170 dout(10) << " got " << *in
<< dendl
;
8176 * open_remote_dir -- open up a remote dirfrag
8178 * @param diri base inode
8179 * @param approxfg approximate fragment.
8180 * @param fin completion callback
8182 void MDCache::open_remote_dirfrag(CInode
*diri
, frag_t approxfg
, MDSInternalContextBase
*fin
)
8184 dout(10) << "open_remote_dir on " << *diri
<< dendl
;
8185 assert(diri
->is_dir());
8186 assert(!diri
->is_auth());
8187 assert(diri
->get_dirfrag(approxfg
) == 0);
8189 discover_dir_frag(diri
, approxfg
, fin
);
8194 * get_dentry_inode - get or open inode
8196 * @param dn the dentry
8197 * @param mdr current request
8199 * will return inode for primary, or link up/open up remote link's inode as necessary.
8200 * If it's not available right now, puts mdr on wait list and returns null.
8202 CInode
*MDCache::get_dentry_inode(CDentry
*dn
, MDRequestRef
& mdr
, bool projected
)
8204 CDentry::linkage_t
*dnl
;
8206 dnl
= dn
->get_projected_linkage();
8208 dnl
= dn
->get_linkage();
8210 assert(!dnl
->is_null());
8212 if (dnl
->is_primary())
8215 assert(dnl
->is_remote());
8216 CInode
*in
= get_inode(dnl
->get_remote_ino());
8218 dout(7) << "get_dentry_inode linking in remote in " << *in
<< dendl
;
8219 dn
->link_remote(dnl
, in
);
8222 dout(10) << "get_dentry_inode on remote dn, opening inode for " << *dn
<< dendl
;
8223 open_remote_dentry(dn
, projected
, new C_MDS_RetryRequest(this, mdr
));
8228 struct C_MDC_OpenRemoteDentry
: public MDCacheContext
{
8231 MDSInternalContextBase
*onfinish
;
8233 C_MDC_OpenRemoteDentry(MDCache
*m
, CDentry
*d
, inodeno_t i
, MDSInternalContextBase
*f
, bool wx
) :
8234 MDCacheContext(m
), dn(d
), ino(i
), onfinish(f
), want_xlocked(wx
) {
8235 dn
->get(MDSCacheObject::PIN_PTRWAITER
);
8237 void finish(int r
) override
{
8238 mdcache
->_open_remote_dentry_finish(dn
, ino
, onfinish
, want_xlocked
, r
);
8239 dn
->put(MDSCacheObject::PIN_PTRWAITER
);
8243 void MDCache::open_remote_dentry(CDentry
*dn
, bool projected
, MDSInternalContextBase
*fin
, bool want_xlocked
)
8245 dout(10) << "open_remote_dentry " << *dn
<< dendl
;
8246 CDentry::linkage_t
*dnl
= projected
? dn
->get_projected_linkage() : dn
->get_linkage();
8247 inodeno_t ino
= dnl
->get_remote_ino();
8248 int64_t pool
= dnl
->get_remote_d_type() == DT_DIR
? mds
->mdsmap
->get_metadata_pool() : -1;
8250 new C_MDC_OpenRemoteDentry(this, dn
, ino
, fin
, want_xlocked
), true, want_xlocked
); // backtrace
8253 void MDCache::_open_remote_dentry_finish(CDentry
*dn
, inodeno_t ino
, MDSInternalContextBase
*fin
,
8254 bool want_xlocked
, int r
)
8257 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
8258 if (dnl
->is_remote() && dnl
->get_remote_ino() == ino
) {
8259 dout(0) << "open_remote_dentry_finish bad remote dentry " << *dn
<< dendl
;
8260 dn
->state_set(CDentry::STATE_BADREMOTEINO
);
8263 CDir
*dir
= dn
->get_dir();
8265 dir
->get_inode()->make_path_string(path
);
8266 path
= path
+ "/" + dn
->get_name();
8269 bool fatal
= mds
->damage_table
.notify_remote_damaged(ino
, path
);
8272 ceph_abort(); // unreachable, damaged() respawns us
8278 fin
->complete(r
< 0 ? r
: 0);
8282 void MDCache::make_trace(vector
<CDentry
*>& trace
, CInode
*in
)
8284 // empty trace if we're a base inode
8288 CInode
*parent
= in
->get_parent_inode();
8290 make_trace(trace
, parent
);
8292 CDentry
*dn
= in
->get_parent_dn();
8293 dout(15) << "make_trace adding " << *dn
<< dendl
;
8294 trace
.push_back(dn
);
8298 // -------------------------------------------------------------------------------
8299 // Open inode by inode number
8301 class C_IO_MDC_OpenInoBacktraceFetched
: public MDCacheIOContext
{
8305 C_IO_MDC_OpenInoBacktraceFetched(MDCache
*c
, inodeno_t i
) :
8306 MDCacheIOContext(c
), ino(i
) {}
8307 void finish(int r
) override
{
8308 mdcache
->_open_ino_backtrace_fetched(ino
, bl
, r
);
8312 struct C_MDC_OpenInoTraverseDir
: public MDCacheContext
{
8317 C_MDC_OpenInoTraverseDir(MDCache
*c
, inodeno_t i
, MMDSOpenIno
*m
, bool p
) :
8318 MDCacheContext(c
), ino(i
), msg(m
), parent(p
) {}
8319 void finish(int r
) override
{
8320 if (r
< 0 && !parent
)
8323 mdcache
->handle_open_ino(msg
, r
);
8326 assert(mdcache
->opening_inodes
.count(ino
));
8327 mdcache
->_open_ino_traverse_dir(ino
, mdcache
->opening_inodes
[ino
], r
);
8331 struct C_MDC_OpenInoParentOpened
: public MDCacheContext
{
8334 C_MDC_OpenInoParentOpened(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
8335 void finish(int r
) override
{
8336 mdcache
->_open_ino_parent_opened(ino
, r
);
8340 void MDCache::_open_ino_backtrace_fetched(inodeno_t ino
, bufferlist
& bl
, int err
)
8342 dout(10) << "_open_ino_backtrace_fetched ino " << ino
<< " errno " << err
<< dendl
;
8344 assert(opening_inodes
.count(ino
));
8345 open_ino_info_t
& info
= opening_inodes
[ino
];
8347 CInode
*in
= get_inode(ino
);
8349 dout(10) << " found cached " << *in
<< dendl
;
8350 open_ino_finish(ino
, info
, in
->authority().first
);
8354 inode_backtrace_t backtrace
;
8357 ::decode(backtrace
, bl
);
8358 } catch (const buffer::error
&decode_exc
) {
8359 derr
<< "corrupt backtrace on ino x0" << std::hex
<< ino
8360 << std::dec
<< ": " << decode_exc
<< dendl
;
8361 open_ino_finish(ino
, info
, -EIO
);
8364 if (backtrace
.pool
!= info
.pool
&& backtrace
.pool
!= -1) {
8365 dout(10) << " old object in pool " << info
.pool
8366 << ", retrying pool " << backtrace
.pool
<< dendl
;
8367 info
.pool
= backtrace
.pool
;
8368 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8369 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8370 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8371 new C_OnFinisher(fin
, mds
->finisher
));
8374 } else if (err
== -ENOENT
) {
8375 int64_t meta_pool
= mds
->mdsmap
->get_metadata_pool();
8376 if (info
.pool
!= meta_pool
) {
8377 dout(10) << " no object in pool " << info
.pool
8378 << ", retrying pool " << meta_pool
<< dendl
;
8379 info
.pool
= meta_pool
;
8380 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8381 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8382 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8383 new C_OnFinisher(fin
, mds
->finisher
));
8386 err
= 0; // backtrace.ancestors.empty() is checked below
8390 if (backtrace
.ancestors
.empty()) {
8391 dout(10) << " got empty backtrace " << dendl
;
8393 } else if (!info
.ancestors
.empty()) {
8394 if (info
.ancestors
[0] == backtrace
.ancestors
[0]) {
8395 dout(10) << " got same parents " << info
.ancestors
[0] << " 2 times" << dendl
;
8403 dout(0) << " failed to open ino " << ino
<< " err " << err
<< "/" << info
.last_err
<< dendl
;
8405 err
= info
.last_err
;
8406 open_ino_finish(ino
, info
, err
);
8410 dout(10) << " got backtrace " << backtrace
<< dendl
;
8411 info
.ancestors
= backtrace
.ancestors
;
8413 _open_ino_traverse_dir(ino
, info
, 0);
8416 void MDCache::_open_ino_parent_opened(inodeno_t ino
, int ret
)
8418 dout(10) << "_open_ino_parent_opened ino " << ino
<< " ret " << ret
<< dendl
;
8420 assert(opening_inodes
.count(ino
));
8421 open_ino_info_t
& info
= opening_inodes
[ino
];
8423 CInode
*in
= get_inode(ino
);
8425 dout(10) << " found cached " << *in
<< dendl
;
8426 open_ino_finish(ino
, info
, in
->authority().first
);
8430 if (ret
== mds
->get_nodeid()) {
8431 _open_ino_traverse_dir(ino
, info
, 0);
8434 mds_rank_t checked_rank
= mds_rank_t(ret
);
8435 info
.check_peers
= true;
8436 info
.auth_hint
= checked_rank
;
8437 info
.checked
.erase(checked_rank
);
8439 do_open_ino(ino
, info
, ret
);
8443 void MDCache::_open_ino_traverse_dir(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8445 dout(10) << __func__
<< ": ino " << ino
<< " ret " << ret
<< dendl
;
8447 CInode
*in
= get_inode(ino
);
8449 dout(10) << " found cached " << *in
<< dendl
;
8450 open_ino_finish(ino
, info
, in
->authority().first
);
8455 do_open_ino(ino
, info
, ret
);
8459 mds_rank_t hint
= info
.auth_hint
;
8460 ret
= open_ino_traverse_dir(ino
, NULL
, info
.ancestors
,
8461 info
.discover
, info
.want_xlocked
, &hint
);
8464 if (hint
!= mds
->get_nodeid())
8465 info
.auth_hint
= hint
;
8466 do_open_ino(ino
, info
, ret
);
8469 void MDCache::_open_ino_fetch_dir(inodeno_t ino
, MMDSOpenIno
*m
, CDir
*dir
, bool parent
)
8471 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
8472 assert(dir
->get_inode()->dirfragtree
.is_leaf(dir
->get_frag()));
8473 dir
->fetch(new C_MDC_OpenInoTraverseDir(this, ino
, m
, parent
));
8476 int MDCache::open_ino_traverse_dir(inodeno_t ino
, MMDSOpenIno
*m
,
8477 vector
<inode_backpointer_t
>& ancestors
,
8478 bool discover
, bool want_xlocked
, mds_rank_t
*hint
)
8480 dout(10) << "open_ino_traverse_dir ino " << ino
<< " " << ancestors
<< dendl
;
8482 for (unsigned i
= 0; i
< ancestors
.size(); i
++) {
8483 CInode
*diri
= get_inode(ancestors
[i
].dirino
);
8486 if (discover
&& MDS_INO_IS_MDSDIR(ancestors
[i
].dirino
)) {
8487 open_foreign_mdsdir(ancestors
[i
].dirino
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8493 if (diri
->state_test(CInode::STATE_REJOINUNDEF
)) {
8494 CDir
*dir
= diri
->get_parent_dir();
8495 while (dir
->state_test(CDir::STATE_REJOINUNDEF
) &&
8496 dir
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
))
8497 dir
= dir
->get_inode()->get_parent_dir();
8498 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8502 if (!diri
->is_dir()) {
8503 dout(10) << " " << *diri
<< " is not dir" << dendl
;
8509 string
&name
= ancestors
[i
].dname
;
8510 frag_t fg
= diri
->pick_dirfrag(name
);
8511 CDir
*dir
= diri
->get_dirfrag(fg
);
8513 if (diri
->is_auth()) {
8514 if (diri
->is_frozen()) {
8515 dout(10) << " " << *diri
<< " is frozen, waiting " << dendl
;
8516 diri
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8519 dir
= diri
->get_or_open_dirfrag(this, fg
);
8520 } else if (discover
) {
8521 open_remote_dirfrag(diri
, fg
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8526 inodeno_t next_ino
= i
> 0 ? ancestors
[i
- 1].dirino
: ino
;
8527 CDentry
*dn
= dir
->lookup(name
);
8528 CDentry::linkage_t
*dnl
= dn
? dn
->get_linkage() : NULL
;
8529 if (dir
->is_auth()) {
8530 if (dnl
&& dnl
->is_primary() &&
8531 dnl
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
)) {
8532 dout(10) << " fetching undef " << *dnl
->get_inode() << dendl
;
8533 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8537 if (!dnl
&& !dir
->is_complete() &&
8538 (!dir
->has_bloom() || dir
->is_in_bloom(name
))) {
8539 dout(10) << " fetching incomplete " << *dir
<< dendl
;
8540 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8544 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8547 } else if (discover
) {
8549 filepath
path(name
, 0);
8550 discover_path(dir
, CEPH_NOSNAP
, path
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0),
8551 (i
== 0 && want_xlocked
));
8554 if (dnl
->is_null() && !dn
->lock
.can_read(-1)) {
8555 dout(10) << " null " << *dn
<< " is not readable, waiting" << dendl
;
8556 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8559 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8565 *hint
= dir
? dir
->authority().first
: diri
->authority().first
;
8571 void MDCache::open_ino_finish(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8573 dout(10) << "open_ino_finish ino " << ino
<< " ret " << ret
<< dendl
;
8575 list
<MDSInternalContextBase
*> waiters
;
8576 waiters
.swap(info
.waiters
);
8577 opening_inodes
.erase(ino
);
8578 finish_contexts(g_ceph_context
, waiters
, ret
);
8581 void MDCache::do_open_ino(inodeno_t ino
, open_ino_info_t
& info
, int err
)
8583 if (err
< 0 && err
!= -EAGAIN
) {
8584 info
.checked
.clear();
8585 info
.checking
= MDS_RANK_NONE
;
8586 info
.check_peers
= true;
8587 info
.fetch_backtrace
= true;
8588 if (info
.discover
) {
8589 info
.discover
= false;
8590 info
.ancestors
.clear();
8592 if (err
!= -ENOENT
&& err
!= -ENOTDIR
)
8593 info
.last_err
= err
;
8596 if (info
.check_peers
|| info
.discover
) {
8597 if (info
.discover
) {
8598 // got backtrace from peer, but failed to find inode. re-check peers
8599 info
.discover
= false;
8600 info
.ancestors
.clear();
8601 info
.checked
.clear();
8603 info
.check_peers
= false;
8604 info
.checking
= MDS_RANK_NONE
;
8605 do_open_ino_peer(ino
, info
);
8606 } else if (info
.fetch_backtrace
) {
8607 info
.check_peers
= true;
8608 info
.fetch_backtrace
= false;
8609 info
.checking
= mds
->get_nodeid();
8610 info
.checked
.clear();
8611 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8612 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8613 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8614 new C_OnFinisher(fin
, mds
->finisher
));
8616 assert(!info
.ancestors
.empty());
8617 info
.checking
= mds
->get_nodeid();
8618 open_ino(info
.ancestors
[0].dirino
, mds
->mdsmap
->get_metadata_pool(),
8619 new C_MDC_OpenInoParentOpened(this, ino
), info
.want_replica
);
8623 void MDCache::do_open_ino_peer(inodeno_t ino
, open_ino_info_t
& info
)
8625 set
<mds_rank_t
> all
, active
;
8626 mds
->mdsmap
->get_mds_set(all
);
8627 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8628 if (mds
->get_state() == MDSMap::STATE_REJOIN
)
8629 mds
->mdsmap
->get_mds_set(active
, MDSMap::STATE_REJOIN
);
8631 dout(10) << "do_open_ino_peer " << ino
<< " active " << active
8632 << " all " << all
<< " checked " << info
.checked
<< dendl
;
8634 mds_rank_t peer
= MDS_RANK_NONE
;
8635 if (info
.auth_hint
>= 0) {
8636 if (active
.count(info
.auth_hint
)) {
8637 peer
= info
.auth_hint
;
8638 info
.auth_hint
= MDS_RANK_NONE
;
8641 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8642 if (*p
!= mds
->get_nodeid() && info
.checked
.count(*p
) == 0) {
8648 all
.erase(mds
->get_nodeid());
8649 if (all
!= info
.checked
) {
8650 dout(10) << " waiting for more peers to be active" << dendl
;
8652 dout(10) << " all MDS peers have been checked " << dendl
;
8653 do_open_ino(ino
, info
, 0);
8656 info
.checking
= peer
;
8657 vector
<inode_backpointer_t
> *pa
= NULL
;
8658 // got backtrace from peer or backtrace just fetched
8659 if (info
.discover
|| !info
.fetch_backtrace
)
8660 pa
= &info
.ancestors
;
8661 mds
->send_message_mds(new MMDSOpenIno(info
.tid
, ino
, pa
), peer
);
8665 void MDCache::handle_open_ino(MMDSOpenIno
*m
, int err
)
8667 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
8668 mds
->get_want_state() != CEPH_MDS_STATE_REJOIN
) {
8673 dout(10) << "handle_open_ino " << *m
<< " err " << err
<< dendl
;
8675 inodeno_t ino
= m
->ino
;
8676 MMDSOpenInoReply
*reply
;
8677 CInode
*in
= get_inode(ino
);
8679 dout(10) << " have " << *in
<< dendl
;
8680 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, mds_rank_t(0));
8681 if (in
->is_auth()) {
8684 CDentry
*pdn
= in
->get_parent_dn();
8687 CInode
*diri
= pdn
->get_dir()->get_inode();
8688 reply
->ancestors
.push_back(inode_backpointer_t(diri
->ino(), pdn
->name
,
8689 in
->inode
.version
));
8693 reply
->hint
= in
->authority().first
;
8695 } else if (err
< 0) {
8696 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, MDS_RANK_NONE
, err
);
8698 mds_rank_t hint
= MDS_RANK_NONE
;
8699 int ret
= open_ino_traverse_dir(ino
, m
, m
->ancestors
, false, false, &hint
);
8702 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, hint
, ret
);
8704 m
->get_connection()->send_message(reply
);
8708 void MDCache::handle_open_ino_reply(MMDSOpenInoReply
*m
)
8710 dout(10) << "handle_open_ino_reply " << *m
<< dendl
;
8712 inodeno_t ino
= m
->ino
;
8713 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8714 auto it
= opening_inodes
.find(ino
);
8715 if (it
!= opening_inodes
.end() && it
->second
.checking
== from
) {
8716 open_ino_info_t
& info
= it
->second
;
8717 info
.checking
= MDS_RANK_NONE
;
8718 info
.checked
.insert(from
);
8720 CInode
*in
= get_inode(ino
);
8722 dout(10) << " found cached " << *in
<< dendl
;
8723 open_ino_finish(ino
, info
, in
->authority().first
);
8724 } else if (!m
->ancestors
.empty()) {
8725 dout(10) << " found ino " << ino
<< " on mds." << from
<< dendl
;
8726 if (!info
.want_replica
) {
8727 open_ino_finish(ino
, info
, from
);
8732 info
.ancestors
= m
->ancestors
;
8733 info
.auth_hint
= from
;
8734 info
.checking
= mds
->get_nodeid();
8735 info
.discover
= true;
8736 _open_ino_traverse_dir(ino
, info
, 0);
8737 } else if (m
->error
) {
8738 dout(10) << " error " << m
->error
<< " from mds." << from
<< dendl
;
8739 do_open_ino(ino
, info
, m
->error
);
8741 if (m
->hint
>= 0 && m
->hint
!= mds
->get_nodeid()) {
8742 info
.auth_hint
= m
->hint
;
8743 info
.checked
.erase(m
->hint
);
8745 do_open_ino_peer(ino
, info
);
8751 void MDCache::kick_open_ino_peers(mds_rank_t who
)
8753 dout(10) << "kick_open_ino_peers mds." << who
<< dendl
;
8755 for (map
<inodeno_t
, open_ino_info_t
>::iterator p
= opening_inodes
.begin();
8756 p
!= opening_inodes
.end();
8758 open_ino_info_t
& info
= p
->second
;
8759 if (info
.checking
== who
) {
8760 dout(10) << " kicking ino " << p
->first
<< " who was checking mds." << who
<< dendl
;
8761 info
.checking
= MDS_RANK_NONE
;
8762 do_open_ino_peer(p
->first
, info
);
8763 } else if (info
.checking
== MDS_RANK_NONE
) {
8764 dout(10) << " kicking ino " << p
->first
<< " who was waiting" << dendl
;
8765 do_open_ino_peer(p
->first
, info
);
8770 void MDCache::open_ino(inodeno_t ino
, int64_t pool
, MDSInternalContextBase
* fin
,
8771 bool want_replica
, bool want_xlocked
)
8773 dout(10) << "open_ino " << ino
<< " pool " << pool
<< " want_replica "
8774 << want_replica
<< dendl
;
8776 if (opening_inodes
.count(ino
)) {
8777 open_ino_info_t
& info
= opening_inodes
[ino
];
8779 info
.want_replica
= true;
8780 if (want_xlocked
&& !info
.want_xlocked
) {
8781 if (!info
.ancestors
.empty()) {
8782 CInode
*diri
= get_inode(info
.ancestors
[0].dirino
);
8784 frag_t fg
= diri
->pick_dirfrag(info
.ancestors
[0].dname
);
8785 CDir
*dir
= diri
->get_dirfrag(fg
);
8786 if (dir
&& !dir
->is_auth()) {
8787 filepath
path(info
.ancestors
[0].dname
, 0);
8788 discover_path(dir
, CEPH_NOSNAP
, path
, NULL
, true);
8792 info
.want_xlocked
= true;
8795 info
.waiters
.push_back(fin
);
8797 open_ino_info_t
& info
= opening_inodes
[ino
];
8798 info
.want_replica
= want_replica
;
8799 info
.want_xlocked
= want_xlocked
;
8800 info
.tid
= ++open_ino_last_tid
;
8801 info
.pool
= pool
>= 0 ? pool
: default_file_layout
.pool_id
;
8802 info
.waiters
.push_back(fin
);
8803 do_open_ino(ino
, info
, 0);
8807 /* ---------------------------- */
8810 * search for a given inode on MDS peers. optionally start with the given node.
8814 - recover from mds node failure, recovery
8818 void MDCache::find_ino_peers(inodeno_t ino
, MDSInternalContextBase
*c
, mds_rank_t hint
)
8820 dout(5) << "find_ino_peers " << ino
<< " hint " << hint
<< dendl
;
8821 CInode
*in
= get_inode(ino
);
8822 if (in
&& in
->state_test(CInode::STATE_PURGING
)) {
8823 c
->complete(-ESTALE
);
8828 ceph_tid_t tid
= ++find_ino_peer_last_tid
;
8829 find_ino_peer_info_t
& fip
= find_ino_peer
[tid
];
8834 _do_find_ino_peer(fip
);
8837 void MDCache::_do_find_ino_peer(find_ino_peer_info_t
& fip
)
8839 set
<mds_rank_t
> all
, active
;
8840 mds
->mdsmap
->get_mds_set(all
);
8841 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8843 dout(10) << "_do_find_ino_peer " << fip
.tid
<< " " << fip
.ino
8844 << " active " << active
<< " all " << all
8845 << " checked " << fip
.checked
8848 mds_rank_t m
= MDS_RANK_NONE
;
8849 if (fip
.hint
>= 0) {
8851 fip
.hint
= MDS_RANK_NONE
;
8853 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8854 if (*p
!= mds
->get_nodeid() &&
8855 fip
.checked
.count(*p
) == 0) {
8860 if (m
== MDS_RANK_NONE
) {
8861 all
.erase(mds
->get_nodeid());
8862 if (all
!= fip
.checked
) {
8863 dout(10) << "_do_find_ino_peer waiting for more peers to be active" << dendl
;
8865 dout(10) << "_do_find_ino_peer failed on " << fip
.ino
<< dendl
;
8866 fip
.fin
->complete(-ESTALE
);
8867 find_ino_peer
.erase(fip
.tid
);
8871 mds
->send_message_mds(new MMDSFindIno(fip
.tid
, fip
.ino
), m
);
8875 void MDCache::handle_find_ino(MMDSFindIno
*m
)
8877 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
8882 dout(10) << "handle_find_ino " << *m
<< dendl
;
8883 MMDSFindInoReply
*r
= new MMDSFindInoReply(m
->tid
);
8884 CInode
*in
= get_inode(m
->ino
);
8886 in
->make_path(r
->path
);
8887 dout(10) << " have " << r
->path
<< " " << *in
<< dendl
;
8889 m
->get_connection()->send_message(r
);
8894 void MDCache::handle_find_ino_reply(MMDSFindInoReply
*m
)
8896 map
<ceph_tid_t
, find_ino_peer_info_t
>::iterator p
= find_ino_peer
.find(m
->tid
);
8897 if (p
!= find_ino_peer
.end()) {
8898 dout(10) << "handle_find_ino_reply " << *m
<< dendl
;
8899 find_ino_peer_info_t
& fip
= p
->second
;
8902 if (get_inode(fip
.ino
)) {
8903 dout(10) << "handle_find_ino_reply successfully found " << fip
.ino
<< dendl
;
8904 mds
->queue_waiter(fip
.fin
);
8905 find_ino_peer
.erase(p
);
8910 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8911 if (fip
.checking
== from
)
8912 fip
.checking
= MDS_RANK_NONE
;
8913 fip
.checked
.insert(from
);
8915 if (!m
->path
.empty()) {
8917 vector
<CDentry
*> trace
;
8918 MDRequestRef null_ref
;
8919 int r
= path_traverse(null_ref
, m
, NULL
, m
->path
, &trace
, NULL
, MDS_TRAVERSE_DISCOVER
);
8922 dout(0) << "handle_find_ino_reply failed with " << r
<< " on " << m
->path
8923 << ", retrying" << dendl
;
8924 fip
.checked
.clear();
8925 _do_find_ino_peer(fip
);
8928 _do_find_ino_peer(fip
);
8931 dout(10) << "handle_find_ino_reply tid " << m
->tid
<< " dne" << dendl
;
8936 void MDCache::kick_find_ino_peers(mds_rank_t who
)
8938 // find_ino_peers requests we should move on from
8939 for (map
<ceph_tid_t
,find_ino_peer_info_t
>::iterator p
= find_ino_peer
.begin();
8940 p
!= find_ino_peer
.end();
8942 find_ino_peer_info_t
& fip
= p
->second
;
8943 if (fip
.checking
== who
) {
8944 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was checking mds." << who
<< dendl
;
8945 fip
.checking
= MDS_RANK_NONE
;
8946 _do_find_ino_peer(fip
);
8947 } else if (fip
.checking
== MDS_RANK_NONE
) {
8948 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was waiting" << dendl
;
8949 _do_find_ino_peer(fip
);
8954 /* ---------------------------- */
8956 int MDCache::get_num_client_requests()
8959 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
8960 p
!= active_requests
.end();
8962 MDRequestRef
& mdr
= p
->second
;
8963 if (mdr
->reqid
.name
.is_client() && !mdr
->is_slave())
8969 /* This function takes over the reference to the passed Message */
8970 MDRequestRef
MDCache::request_start(MClientRequest
*req
)
8972 // did we win a forward race against a slave?
8973 if (active_requests
.count(req
->get_reqid())) {
8974 MDRequestRef
& mdr
= active_requests
[req
->get_reqid()];
8976 if (mdr
->is_slave()) {
8977 dout(10) << "request_start already had " << *mdr
<< ", waiting for finish" << dendl
;
8978 mdr
->more()->waiting_for_finish
.push_back(new C_MDS_RetryMessage(mds
, req
));
8980 dout(10) << "request_start already processing " << *mdr
<< ", dropping new msg" << dendl
;
8983 return MDRequestRef();
8986 // register new client request
8987 MDRequestImpl::Params params
;
8988 params
.reqid
= req
->get_reqid();
8989 params
.attempt
= req
->get_num_fwd();
8990 params
.client_req
= req
;
8991 params
.initiated
= req
->get_recv_stamp();
8992 params
.throttled
= req
->get_throttle_stamp();
8993 params
.all_read
= req
->get_recv_complete_stamp();
8994 params
.dispatched
= req
->get_dispatch_stamp();
8997 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
8998 active_requests
[params
.reqid
] = mdr
;
8999 mdr
->set_op_stamp(req
->get_stamp());
9000 dout(7) << "request_start " << *mdr
<< dendl
;
9004 MDRequestRef
MDCache::request_start_slave(metareqid_t ri
, __u32 attempt
, Message
*m
)
9006 int by
= m
->get_source().num();
9007 MDRequestImpl::Params params
;
9009 params
.attempt
= attempt
;
9010 params
.triggering_slave_req
= m
;
9011 params
.slave_to
= by
;
9012 params
.initiated
= m
->get_recv_stamp();
9013 params
.throttled
= m
->get_throttle_stamp();
9014 params
.all_read
= m
->get_recv_complete_stamp();
9015 params
.dispatched
= m
->get_dispatch_stamp();
9017 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
9018 assert(active_requests
.count(mdr
->reqid
) == 0);
9019 active_requests
[mdr
->reqid
] = mdr
;
9020 dout(7) << "request_start_slave " << *mdr
<< " by mds." << by
<< dendl
;
9024 MDRequestRef
MDCache::request_start_internal(int op
)
9026 MDRequestImpl::Params params
;
9027 params
.reqid
.name
= entity_name_t::MDS(mds
->get_nodeid());
9028 params
.reqid
.tid
= mds
->issue_tid();
9029 params
.initiated
= ceph_clock_now();
9030 params
.internal_op
= op
;
9032 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
9034 assert(active_requests
.count(mdr
->reqid
) == 0);
9035 active_requests
[mdr
->reqid
] = mdr
;
9036 dout(7) << "request_start_internal " << *mdr
<< " op " << op
<< dendl
;
9040 MDRequestRef
MDCache::request_get(metareqid_t rid
)
9042 ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.find(rid
);
9043 assert(p
!= active_requests
.end());
9044 dout(7) << "request_get " << rid
<< " " << *p
->second
<< dendl
;
9048 void MDCache::request_finish(MDRequestRef
& mdr
)
9050 dout(7) << "request_finish " << *mdr
<< dendl
;
9051 mdr
->mark_event("finishing request");
9054 if (mdr
->has_more() && mdr
->more()->slave_commit
) {
9055 Context
*fin
= mdr
->more()->slave_commit
;
9056 mdr
->more()->slave_commit
= 0;
9059 mdr
->aborted
= false;
9061 mdr
->more()->slave_rolling_back
= true;
9064 mdr
->committing
= true;
9066 fin
->complete(ret
); // this must re-call request_finish.
9070 switch(mdr
->internal_op
) {
9071 case CEPH_MDS_OP_FRAGMENTDIR
:
9072 logger
->inc(l_mdss_ireq_fragmentdir
);
9074 case CEPH_MDS_OP_EXPORTDIR
:
9075 logger
->inc(l_mdss_ireq_exportdir
);
9077 case CEPH_MDS_OP_ENQUEUE_SCRUB
:
9078 logger
->inc(l_mdss_ireq_enqueue_scrub
);
9080 case CEPH_MDS_OP_FLUSH
:
9081 logger
->inc(l_mdss_ireq_flush
);
9083 case CEPH_MDS_OP_REPAIR_FRAGSTATS
:
9084 logger
->inc(l_mdss_ireq_fragstats
);
9086 case CEPH_MDS_OP_REPAIR_INODESTATS
:
9087 logger
->inc(l_mdss_ireq_inodestats
);
9091 request_cleanup(mdr
);
9095 void MDCache::request_forward(MDRequestRef
& mdr
, mds_rank_t who
, int port
)
9097 mdr
->mark_event("forwarding request");
9098 if (mdr
->client_request
&& mdr
->client_request
->get_source().is_client()) {
9099 dout(7) << "request_forward " << *mdr
<< " to mds." << who
<< " req "
9100 << *mdr
->client_request
<< dendl
;
9101 mds
->forward_message_mds(mdr
->client_request
, who
);
9102 mdr
->client_request
= 0;
9103 if (mds
->logger
) mds
->logger
->inc(l_mds_forward
);
9104 } else if (mdr
->internal_op
>= 0) {
9105 dout(10) << "request_forward on internal op; cancelling" << dendl
;
9106 mdr
->internal_op_finish
->complete(-EXDEV
);
9108 dout(7) << "request_forward drop " << *mdr
<< " req " << *mdr
->client_request
9109 << " was from mds" << dendl
;
9111 request_cleanup(mdr
);
9115 void MDCache::dispatch_request(MDRequestRef
& mdr
)
9117 if (mdr
->client_request
) {
9118 mds
->server
->dispatch_client_request(mdr
);
9119 } else if (mdr
->slave_request
) {
9120 mds
->server
->dispatch_slave_request(mdr
);
9122 switch (mdr
->internal_op
) {
9123 case CEPH_MDS_OP_FRAGMENTDIR
:
9124 dispatch_fragment_dir(mdr
);
9126 case CEPH_MDS_OP_EXPORTDIR
:
9127 migrator
->dispatch_export_dir(mdr
, 0);
9129 case CEPH_MDS_OP_ENQUEUE_SCRUB
:
9130 enqueue_scrub_work(mdr
);
9132 case CEPH_MDS_OP_FLUSH
:
9133 flush_dentry_work(mdr
);
9135 case CEPH_MDS_OP_REPAIR_FRAGSTATS
:
9136 repair_dirfrag_stats_work(mdr
);
9138 case CEPH_MDS_OP_REPAIR_INODESTATS
:
9139 repair_inode_stats_work(mdr
);
9148 void MDCache::request_drop_foreign_locks(MDRequestRef
& mdr
)
9150 if (!mdr
->has_more())
9154 // (will implicitly drop remote dn pins)
9155 for (set
<mds_rank_t
>::iterator p
= mdr
->more()->slaves
.begin();
9156 p
!= mdr
->more()->slaves
.end();
9158 MMDSSlaveRequest
*r
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
9159 MMDSSlaveRequest::OP_FINISH
);
9161 if (mdr
->killed
&& !mdr
->committing
) {
9163 } else if (mdr
->more()->srcdn_auth_mds
== *p
&&
9164 mdr
->more()->inode_import
.length() > 0) {
9165 // information about rename imported caps
9166 r
->inode_export
.claim(mdr
->more()->inode_import
);
9169 mds
->send_message_mds(r
, *p
);
9172 /* strip foreign xlocks out of lock lists, since the OP_FINISH drops them
9173 * implicitly. Note that we don't call the finishers -- there shouldn't
9174 * be any on a remote lock and the request finish wakes up all
9175 * the waiters anyway! */
9176 set
<SimpleLock
*>::iterator p
= mdr
->xlocks
.begin();
9177 while (p
!= mdr
->xlocks
.end()) {
9178 if ((*p
)->get_parent()->is_auth())
9181 dout(10) << "request_drop_foreign_locks forgetting lock " << **p
9182 << " on " << *(*p
)->get_parent() << dendl
;
9184 mdr
->locks
.erase(*p
);
9185 mdr
->xlocks
.erase(p
++);
9189 map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
9190 while (q
!= mdr
->remote_wrlocks
.end()) {
9191 dout(10) << "request_drop_foreign_locks forgetting remote_wrlock " << *q
->first
9192 << " on mds." << q
->second
9193 << " on " << *(q
->first
)->get_parent() << dendl
;
9194 mdr
->locks
.erase(q
->first
);
9195 mdr
->remote_wrlocks
.erase(q
++);
9198 mdr
->more()->slaves
.clear(); /* we no longer have requests out to them, and
9199 * leaving them in can cause double-notifies as
9200 * this function can get called more than once */
9203 void MDCache::request_drop_non_rdlocks(MDRequestRef
& mdr
)
9205 request_drop_foreign_locks(mdr
);
9206 mds
->locker
->drop_non_rdlocks(mdr
.get());
9209 void MDCache::request_drop_locks(MDRequestRef
& mdr
)
9211 request_drop_foreign_locks(mdr
);
9212 mds
->locker
->drop_locks(mdr
.get());
9215 void MDCache::request_cleanup(MDRequestRef
& mdr
)
9217 dout(15) << "request_cleanup " << *mdr
<< dendl
;
9219 if (mdr
->has_more()) {
9220 if (mdr
->more()->is_ambiguous_auth
)
9221 mdr
->clear_ambiguous_auth();
9222 if (!mdr
->more()->waiting_for_finish
.empty())
9223 mds
->queue_waiters(mdr
->more()->waiting_for_finish
);
9226 request_drop_locks(mdr
);
9228 // drop (local) auth pins
9229 mdr
->drop_local_auth_pins();
9232 for (set
<CInode
*>::iterator p
= mdr
->stickydirs
.begin();
9233 p
!= mdr
->stickydirs
.end();
9235 (*p
)->put_stickydirs();
9237 mds
->locker
->kick_cap_releases(mdr
);
9242 // remove from session
9243 mdr
->item_session_request
.remove_myself();
9246 active_requests
.erase(mdr
->reqid
);
9251 mdr
->mark_event("cleaned up request");
9254 void MDCache::request_kill(MDRequestRef
& mdr
)
9256 // rollback slave requests is tricky. just let the request proceed.
9257 if (mdr
->done_locking
&& mdr
->has_more() &&
9258 (!mdr
->more()->witnessed
.empty() || !mdr
->more()->waiting_on_slave
.empty())) {
9259 dout(10) << "request_kill " << *mdr
<< " -- already started slave requests, no-op" << dendl
;
9261 assert(mdr
->used_prealloc_ino
== 0);
9262 assert(mdr
->prealloc_inos
.empty());
9264 mdr
->session
= NULL
;
9265 mdr
->item_session_request
.remove_myself();
9270 mdr
->mark_event("killing request");
9272 if (mdr
->committing
) {
9273 dout(10) << "request_kill " << *mdr
<< " -- already committing, no-op" << dendl
;
9275 dout(10) << "request_kill " << *mdr
<< dendl
;
9276 request_cleanup(mdr
);
9280 // -------------------------------------------------------------------------------
9283 struct C_MDC_snaprealm_create_finish
: public MDCacheLogContext
{
9287 C_MDC_snaprealm_create_finish(MDCache
*c
, MDRequestRef
& m
,
9288 MutationRef
& mu
, CInode
*i
) :
9289 MDCacheLogContext(c
), mdr(m
), mut(mu
), in(i
) {}
9290 void finish(int r
) override
{
9291 mdcache
->_snaprealm_create_finish(mdr
, mut
, in
);
9295 void MDCache::snaprealm_create(MDRequestRef
& mdr
, CInode
*in
)
9297 dout(10) << "snaprealm_create " << *in
<< dendl
;
9298 assert(!in
->snaprealm
);
9301 if (!mdr
->more()->stid
) {
9302 mds
->snapclient
->prepare_create_realm(in
->ino(), &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
9303 new C_MDS_RetryRequest(this, mdr
));
9307 MutationRef
mut(new MutationImpl());
9308 mut
->ls
= mds
->mdlog
->get_current_segment();
9309 EUpdate
*le
= new EUpdate(mds
->mdlog
, "snaprealm_create");
9310 mds
->mdlog
->start_entry(le
);
9312 le
->metablob
.add_table_transaction(TABLE_SNAP
, mdr
->more()->stid
);
9314 inode_t
*pi
= in
->project_inode();
9315 pi
->version
= in
->pre_dirty();
9316 pi
->rstat
.rsnaprealms
++;
9318 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9322 sr_t
*newsnap
= in
->project_snaprealm(seq
);
9324 newsnap
->last_created
= seq
;
9326 predirty_journal_parents(mut
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
9327 journal_cow_inode(mut
, &le
->metablob
, in
);
9328 le
->metablob
.add_primary_dentry(in
->get_projected_parent_dn(), in
, true);
9330 mds
->server
->submit_mdlog_entry(le
,
9331 new C_MDC_snaprealm_create_finish(this, mdr
,
9334 mds
->mdlog
->flush();
9338 void MDCache::do_realm_invalidate_and_update_notify(CInode
*in
, int snapop
, bool nosend
)
9340 dout(10) << "do_realm_invalidate_and_update_notify " << *in
->snaprealm
<< " " << *in
<< dendl
;
9342 vector
<inodeno_t
> split_inos
;
9343 vector
<inodeno_t
> split_realms
;
9345 if (snapop
== CEPH_SNAP_OP_SPLIT
) {
9346 // notify clients of update|split
9347 for (elist
<CInode
*>::iterator p
= in
->snaprealm
->inodes_with_caps
.begin(member_offset(CInode
, item_caps
));
9349 split_inos
.push_back((*p
)->ino());
9351 for (set
<SnapRealm
*>::iterator p
= in
->snaprealm
->open_children
.begin();
9352 p
!= in
->snaprealm
->open_children
.end();
9354 split_realms
.push_back((*p
)->inode
->ino());
9358 in
->snaprealm
->build_snap_trace(snapbl
);
9360 set
<SnapRealm
*> past_children
;
9361 map
<client_t
, MClientSnap
*> updates
;
9363 q
.push_back(in
->snaprealm
);
9364 while (!q
.empty()) {
9365 SnapRealm
*realm
= q
.front();
9368 dout(10) << " realm " << *realm
<< " on " << *realm
->inode
<< dendl
;
9369 realm
->invalidate_cached_snaps();
9371 for (map
<client_t
, xlist
<Capability
*>* >::iterator p
= realm
->client_caps
.begin();
9372 p
!= realm
->client_caps
.end();
9374 assert(!p
->second
->empty());
9375 if (!nosend
&& updates
.count(p
->first
) == 0) {
9376 MClientSnap
*update
= new MClientSnap(snapop
);
9377 update
->head
.split
= in
->ino();
9378 update
->split_inos
= split_inos
;
9379 update
->split_realms
= split_realms
;
9380 update
->bl
= snapbl
;
9381 updates
[p
->first
] = update
;
9385 if (snapop
== CEPH_SNAP_OP_UPDATE
|| snapop
== CEPH_SNAP_OP_DESTROY
) {
9386 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9387 p
!= realm
->open_past_children
.end();
9389 past_children
.insert(*p
);
9392 // notify for active children, too.
9393 dout(10) << " " << realm
<< " open_children are " << realm
->open_children
<< dendl
;
9394 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9395 p
!= realm
->open_children
.end();
9401 send_snaps(updates
);
9403 // notify past children and their descendants if we update/delete old snapshots
9404 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9405 p
!= past_children
.end();
9409 while (!q
.empty()) {
9410 SnapRealm
*realm
= q
.front();
9413 realm
->invalidate_cached_snaps();
9415 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9416 p
!= realm
->open_children
.end();
9418 if (past_children
.count(*p
) == 0)
9422 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9423 p
!= realm
->open_past_children
.end();
9425 if (past_children
.count(*p
) == 0) {
9427 past_children
.insert(*p
);
9432 if (snapop
== CEPH_SNAP_OP_DESTROY
) {
9433 // eval stray inodes if we delete snapshot from their past ancestor snaprealm
9434 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9435 p
!= past_children
.end();
9437 maybe_eval_stray((*p
)->inode
, true);
9441 void MDCache::_snaprealm_create_finish(MDRequestRef
& mdr
, MutationRef
& mut
, CInode
*in
)
9443 dout(10) << "_snaprealm_create_finish " << *in
<< dendl
;
9446 in
->pop_and_dirty_projected_inode(mut
->ls
);
9448 mds
->locker
->drop_locks(mut
.get());
9451 // tell table we've committed
9452 mds
->snapclient
->commit(mdr
->more()->stid
, mut
->ls
);
9455 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9459 in
->open_snaprealm();
9460 in
->snaprealm
->srnode
.seq
= seq
;
9461 in
->snaprealm
->srnode
.created
= seq
;
9462 bool ok
= in
->snaprealm
->_open_parents(NULL
);
9465 do_realm_invalidate_and_update_notify(in
, CEPH_SNAP_OP_SPLIT
);
9468 static int count = 5;
9470 ceph_abort(); // hack test test **********
9474 mdr
->more()->stid
= 0; // caller will likely need to reuse this
9475 dispatch_request(mdr
);
9479 // -------------------------------------------------------------------------------
9482 struct C_MDC_RetryScanStray
: public MDCacheContext
{
9484 C_MDC_RetryScanStray(MDCache
*c
, dirfrag_t n
) : MDCacheContext(c
), next(n
) { }
9485 void finish(int r
) override
{
9486 mdcache
->scan_stray_dir(next
);
9490 void MDCache::scan_stray_dir(dirfrag_t next
)
9492 dout(10) << "scan_stray_dir " << next
<< dendl
;
9495 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
9496 if (strays
[i
]->ino() < next
.ino
)
9498 strays
[i
]->get_dirfrags(ls
);
9501 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
9503 if (dir
->dirfrag() < next
)
9505 if (!dir
->is_complete()) {
9506 dir
->fetch(new C_MDC_RetryScanStray(this, dir
->dirfrag()));
9509 for (CDir::map_t::iterator q
= dir
->items
.begin(); q
!= dir
->items
.end(); ++q
) {
9510 CDentry
*dn
= q
->second
;
9511 dn
->state_set(CDentry::STATE_STRAY
);
9512 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
9513 if (dnl
->is_primary()) {
9514 CInode
*in
= dnl
->get_inode();
9515 if (in
->inode
.nlink
== 0)
9516 in
->state_set(CInode::STATE_ORPHAN
);
9517 maybe_eval_stray(in
);
9523 void MDCache::fetch_backtrace(inodeno_t ino
, int64_t pool
, bufferlist
& bl
, Context
*fin
)
9525 object_t oid
= CInode::get_object_name(ino
, frag_t(), "");
9526 mds
->objecter
->getxattr(oid
, object_locator_t(pool
), "parent", CEPH_NOSNAP
, &bl
, 0, fin
);
9533 // ========================================================================================
9537 - for all discovers (except base_inos, e.g. root, stray), waiters are attached
9538 to the parent metadata object in the cache (pinning it).
9540 - all discovers are tracked by tid, so that we can ignore potentially dup replies.
9544 void MDCache::_send_discover(discover_info_t
& d
)
9546 MDiscover
*dis
= new MDiscover(d
.ino
, d
.frag
, d
.snap
, d
.want_path
,
9547 d
.want_base_dir
, d
.want_xlocked
);
9548 dis
->set_tid(d
.tid
);
9549 mds
->send_message_mds(dis
, d
.mds
);
9552 void MDCache::discover_base_ino(inodeno_t want_ino
,
9553 MDSInternalContextBase
*onfinish
,
9556 dout(7) << "discover_base_ino " << want_ino
<< " from mds." << from
<< dendl
;
9557 if (waiting_for_base_ino
[from
].count(want_ino
) == 0) {
9558 discover_info_t
& d
= _create_discover(from
);
9562 waiting_for_base_ino
[from
][want_ino
].push_back(onfinish
);
9566 void MDCache::discover_dir_frag(CInode
*base
,
9568 MDSInternalContextBase
*onfinish
,
9572 from
= base
->authority().first
;
9574 dirfrag_t
df(base
->ino(), approx_fg
);
9575 dout(7) << "discover_dir_frag " << df
9576 << " from mds." << from
<< dendl
;
9578 if (!base
->is_waiting_for_dir(approx_fg
) || !onfinish
) {
9579 discover_info_t
& d
= _create_discover(from
);
9581 d
.ino
= base
->ino();
9583 d
.want_base_dir
= true;
9588 base
->add_dir_waiter(approx_fg
, onfinish
);
9591 struct C_MDC_RetryDiscoverPath
: public MDCacheContext
{
9596 C_MDC_RetryDiscoverPath(MDCache
*c
, CInode
*b
, snapid_t s
, filepath
&p
, mds_rank_t f
) :
9597 MDCacheContext(c
), base(b
), snapid(s
), path(p
), from(f
) {}
9598 void finish(int r
) override
{
9599 mdcache
->discover_path(base
, snapid
, path
, 0, from
);
9603 void MDCache::discover_path(CInode
*base
,
9606 MDSInternalContextBase
*onfinish
,
9611 from
= base
->authority().first
;
9613 dout(7) << "discover_path " << base
->ino() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9614 << (want_xlocked
? " want_xlocked":"")
9617 if (base
->is_ambiguous_auth()) {
9618 dout(10) << " waiting for single auth on " << *base
<< dendl
;
9620 onfinish
= new C_MDC_RetryDiscoverPath(this, base
, snap
, want_path
, from
);
9621 base
->add_waiter(CInode::WAIT_SINGLEAUTH
, onfinish
);
9623 } else if (from
== mds
->get_nodeid()) {
9624 list
<MDSInternalContextBase
*> finished
;
9625 base
->take_waiting(CInode::WAIT_DIR
, finished
);
9626 mds
->queue_waiters(finished
);
9630 frag_t fg
= base
->pick_dirfrag(want_path
[0]);
9631 if ((want_xlocked
&& want_path
.depth() == 1) ||
9632 !base
->is_waiting_for_dir(fg
) || !onfinish
) {
9633 discover_info_t
& d
= _create_discover(from
);
9634 d
.ino
= base
->ino();
9638 d
.want_path
= want_path
;
9639 d
.want_base_dir
= true;
9640 d
.want_xlocked
= want_xlocked
;
9646 base
->add_dir_waiter(fg
, onfinish
);
9649 struct C_MDC_RetryDiscoverPath2
: public MDCacheContext
{
9653 C_MDC_RetryDiscoverPath2(MDCache
*c
, CDir
*b
, snapid_t s
, filepath
&p
) :
9654 MDCacheContext(c
), base(b
), snapid(s
), path(p
) {}
9655 void finish(int r
) override
{
9656 mdcache
->discover_path(base
, snapid
, path
, 0);
9660 void MDCache::discover_path(CDir
*base
,
9663 MDSInternalContextBase
*onfinish
,
9666 mds_rank_t from
= base
->authority().first
;
9668 dout(7) << "discover_path " << base
->dirfrag() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9669 << (want_xlocked
? " want_xlocked":"")
9672 if (base
->is_ambiguous_auth()) {
9673 dout(7) << " waiting for single auth on " << *base
<< dendl
;
9675 onfinish
= new C_MDC_RetryDiscoverPath2(this, base
, snap
, want_path
);
9676 base
->add_waiter(CDir::WAIT_SINGLEAUTH
, onfinish
);
9678 } else if (from
== mds
->get_nodeid()) {
9679 list
<MDSInternalContextBase
*> finished
;
9680 base
->take_sub_waiting(finished
);
9681 mds
->queue_waiters(finished
);
9685 if ((want_xlocked
&& want_path
.depth() == 1) ||
9686 !base
->is_waiting_for_dentry(want_path
[0].c_str(), snap
) || !onfinish
) {
9687 discover_info_t
& d
= _create_discover(from
);
9688 d
.ino
= base
->ino();
9689 d
.pin_base(base
->inode
);
9690 d
.frag
= base
->get_frag();
9692 d
.want_path
= want_path
;
9693 d
.want_base_dir
= false;
9694 d
.want_xlocked
= want_xlocked
;
9700 base
->add_dentry_waiter(want_path
[0], snap
, onfinish
);
9703 void MDCache::kick_discovers(mds_rank_t who
)
9705 for (map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.begin();
9706 p
!= discovers
.end();
9708 if (p
->second
.mds
!= who
)
9710 _send_discover(p
->second
);
9715 /* This function DOES put the passed message before returning */
9716 void MDCache::handle_discover(MDiscover
*dis
)
9718 mds_rank_t whoami
= mds
->get_nodeid();
9719 mds_rank_t from
= mds_rank_t(dis
->get_source().num());
9721 assert(from
!= whoami
);
9723 if (mds
->get_state() <= MDSMap::STATE_REJOIN
) {
9724 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
9725 mds
->get_want_state() < CEPH_MDS_STATE_REJOIN
) {
9730 // proceed if requester is in the REJOIN stage, the request is from parallel_fetch().
9731 // delay processing request from survivor because we may not yet choose lock states.
9732 if (!mds
->mdsmap
->is_rejoin(from
)) {
9733 dout(0) << "discover_reply not yet active(|still rejoining), delaying" << dendl
;
9734 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, dis
));
9741 MDiscoverReply
*reply
= new MDiscoverReply(dis
);
9743 snapid_t snapid
= dis
->get_snapid();
9746 if (MDS_INO_IS_BASE(dis
->get_base_ino()) &&
9747 !dis
->wants_base_dir() && dis
->get_want().depth() == 0) {
9749 dout(7) << "handle_discover from mds." << from
9750 << " wants base + " << dis
->get_want().get_path()
9751 << " snap " << snapid
9754 cur
= get_inode(dis
->get_base_ino());
9758 reply
->starts_with
= MDiscoverReply::INODE
;
9759 replicate_inode(cur
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9760 dout(10) << "added base " << *cur
<< dendl
;
9763 // there's a base inode
9764 cur
= get_inode(dis
->get_base_ino(), snapid
);
9765 if (!cur
&& snapid
!= CEPH_NOSNAP
) {
9766 cur
= get_inode(dis
->get_base_ino());
9767 if (cur
&& !cur
->is_multiversion())
9768 cur
= NULL
; // nope!
9772 dout(7) << "handle_discover mds." << from
9773 << " don't have base ino " << dis
->get_base_ino() << "." << snapid
9775 if (!dis
->wants_base_dir() && dis
->get_want().depth() > 0)
9776 reply
->set_error_dentry(dis
->get_dentry(0));
9777 reply
->set_flag_error_dir();
9778 } else if (dis
->wants_base_dir()) {
9779 dout(7) << "handle_discover mds." << from
9780 << " wants basedir+" << dis
->get_want().get_path()
9784 dout(7) << "handle_discover mds." << from
9785 << " wants " << dis
->get_want().get_path()
9794 // do some fidgeting to include a dir if they asked for the base dir, or just root.
9795 for (unsigned i
= 0;
9796 cur
&& (i
< dis
->get_want().depth() || dis
->get_want().depth() == 0);
9799 // -- figure out the dir
9801 // is *cur even a dir at all?
9802 if (!cur
->is_dir()) {
9803 dout(7) << *cur
<< " not a dir" << dendl
;
9804 reply
->set_flag_error_dir();
9810 if (dis
->get_want().depth()) {
9812 fg
= cur
->pick_dirfrag(dis
->get_dentry(i
));
9814 // requester explicity specified the frag
9815 assert(dis
->wants_base_dir() || MDS_INO_IS_BASE(dis
->get_base_ino()));
9816 fg
= dis
->get_base_dir_frag();
9817 if (!cur
->dirfragtree
.is_leaf(fg
))
9818 fg
= cur
->dirfragtree
[fg
.value()];
9820 CDir
*curdir
= cur
->get_dirfrag(fg
);
9822 if ((!curdir
&& !cur
->is_auth()) ||
9823 (curdir
&& !curdir
->is_auth())) {
9826 * ONLY set flag if empty!!
9827 * otherwise requester will wake up waiter(s) _and_ continue with discover,
9828 * resulting in duplicate discovers in flight,
9829 * which can wreak havoc when discovering rename srcdn (which may move)
9832 if (reply
->is_empty()) {
9833 // only hint if empty.
9834 // someday this could be better, but right now the waiter logic isn't smart enough.
9838 dout(7) << " not dirfrag auth, setting dir_auth_hint for " << *curdir
<< dendl
;
9839 reply
->set_dir_auth_hint(curdir
->authority().first
);
9841 dout(7) << " dirfrag not open, not inode auth, setting dir_auth_hint for "
9843 reply
->set_dir_auth_hint(cur
->authority().first
);
9846 // note error dentry, if any
9847 // NOTE: important, as it allows requester to issue an equivalent discover
9848 // to whomever we hint at.
9849 if (dis
->get_want().depth() > i
)
9850 reply
->set_error_dentry(dis
->get_dentry(i
));
9856 if (!curdir
) { // open dir?
9857 if (cur
->is_frozen()) {
9858 if (!reply
->is_empty()) {
9859 dout(7) << *cur
<< " is frozen, non-empty reply, stopping" << dendl
;
9862 dout(7) << *cur
<< " is frozen, empty reply, waiting" << dendl
;
9863 cur
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9867 curdir
= cur
->get_or_open_dirfrag(this, fg
);
9868 } else if (curdir
->is_frozen_tree() ||
9869 (curdir
->is_frozen_dir() && fragment_are_all_frozen(curdir
))) {
9870 if (!reply
->is_empty()) {
9871 dout(7) << *curdir
<< " is frozen, non-empty reply, stopping" << dendl
;
9874 if (dis
->wants_base_dir() && dis
->get_base_dir_frag() != curdir
->get_frag()) {
9875 dout(7) << *curdir
<< " is frozen, dirfrag mismatch, stopping" << dendl
;
9876 reply
->set_flag_error_dir();
9879 dout(7) << *curdir
<< " is frozen, empty reply, waiting" << dendl
;
9880 curdir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9886 if (curdir
->get_version() == 0) {
9887 // fetch newly opened dir
9888 } else if (reply
->is_empty() && !dis
->wants_base_dir()) {
9889 dout(7) << "handle_discover not adding unwanted base dir " << *curdir
<< dendl
;
9890 // make sure the base frag is correct, though, in there was a refragment since the
9891 // original request was sent.
9892 reply
->set_base_dir_frag(curdir
->get_frag());
9894 assert(!curdir
->is_ambiguous_auth()); // would be frozen.
9895 if (!reply
->trace
.length())
9896 reply
->starts_with
= MDiscoverReply::DIR;
9897 replicate_dir(curdir
, from
, reply
->trace
);
9898 dout(7) << "handle_discover added dir " << *curdir
<< dendl
;
9903 if (curdir
->get_version() == 0) {
9904 // fetch newly opened dir
9905 assert(!curdir
->has_bloom());
9906 } else if (dis
->get_want().depth() > 0) {
9908 dn
= curdir
->lookup(dis
->get_dentry(i
), snapid
);
9914 if (!curdir
->is_complete() &&
9915 (!curdir
->has_bloom() || curdir
->is_in_bloom(dis
->get_dentry(i
)))) {
9917 dout(7) << "incomplete dir contents for " << *curdir
<< ", fetching" << dendl
;
9918 if (reply
->is_empty()) {
9920 curdir
->fetch(new C_MDS_RetryMessage(mds
, dis
),
9921 dis
->wants_base_dir() && curdir
->get_version() == 0);
9925 // initiate fetch, but send what we have so far
9932 dout(7) << "dentry " << dis
->get_dentry(i
) << " dne, returning null in "
9933 << *curdir
<< dendl
;
9934 dn
= curdir
->add_null_dentry(dis
->get_dentry(i
));
9938 // don't add replica to purging dentry/inode
9939 if (dn
->state_test(CDentry::STATE_PURGING
)) {
9940 if (reply
->is_empty())
9941 reply
->set_flag_error_dn(dis
->get_dentry(i
));
9945 CDentry::linkage_t
*dnl
= dn
->get_linkage();
9948 // ...always block on non-tail items (they are unrelated)
9949 // ...allow xlocked tail disocvery _only_ if explicitly requested
9950 bool tailitem
= (dis
->get_want().depth() == 0) || (i
== dis
->get_want().depth() - 1);
9951 if (dn
->lock
.is_xlocked()) {
9952 // is this the last (tail) item in the discover traversal?
9953 if (tailitem
&& dis
->wants_xlocked()) {
9954 dout(7) << "handle_discover allowing discovery of xlocked tail " << *dn
<< dendl
;
9955 } else if (reply
->is_empty()) {
9956 dout(7) << "handle_discover blocking on xlocked " << *dn
<< dendl
;
9957 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDS_RetryMessage(mds
, dis
));
9961 dout(7) << "handle_discover non-empty reply, xlocked tail " << *dn
<< dendl
;
9967 if (dnl
->is_primary() && dnl
->get_inode()->is_frozen_inode()) {
9968 if (tailitem
&& dis
->wants_xlocked()) {
9969 dout(7) << "handle_discover allowing discovery of frozen tail " << *dnl
->get_inode() << dendl
;
9970 } else if (reply
->is_empty()) {
9971 dout(7) << *dnl
->get_inode() << " is frozen, empty reply, waiting" << dendl
;
9972 dnl
->get_inode()->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9976 dout(7) << *dnl
->get_inode() << " is frozen, non-empty reply, stopping" << dendl
;
9982 if (!reply
->trace
.length())
9983 reply
->starts_with
= MDiscoverReply::DENTRY
;
9984 replicate_dentry(dn
, from
, reply
->trace
);
9985 dout(7) << "handle_discover added dentry " << *dn
<< dendl
;
9987 if (!dnl
->is_primary()) break; // stop on null or remote link.
9990 CInode
*next
= dnl
->get_inode();
9991 assert(next
->is_auth());
9993 replicate_inode(next
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9994 dout(7) << "handle_discover added inode " << *next
<< dendl
;
9996 // descend, keep going.
10002 assert(!reply
->is_empty());
10003 dout(7) << "handle_discover sending result back to asker mds." << from
<< dendl
;
10004 mds
->send_message(reply
, dis
->get_connection());
10009 /* This function DOES put the passed message before returning */
10010 void MDCache::handle_discover_reply(MDiscoverReply
*m
)
10013 if (mds->get_state() < MDSMap::STATE_ACTIVE) {
10014 dout(0) << "discover_reply NOT ACTIVE YET" << dendl;
10019 dout(7) << "discover_reply " << *m
<< dendl
;
10020 if (m
->is_flag_error_dir())
10021 dout(7) << " flag error, dir" << dendl
;
10022 if (m
->is_flag_error_dn())
10023 dout(7) << " flag error, dentry = " << m
->get_error_dentry() << dendl
;
10025 list
<MDSInternalContextBase
*> finished
, error
;
10026 mds_rank_t from
= mds_rank_t(m
->get_source().num());
10029 CInode
*cur
= get_inode(m
->get_base_ino());
10030 bufferlist::iterator p
= m
->trace
.begin();
10032 int next
= m
->starts_with
;
10034 // decrement discover counters
10035 if (m
->get_tid()) {
10036 map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.find(m
->get_tid());
10037 if (p
!= discovers
.end()) {
10038 dout(10) << " found tid " << m
->get_tid() << dendl
;
10039 discovers
.erase(p
);
10041 dout(10) << " tid " << m
->get_tid() << " not found, must be dup reply" << dendl
;
10045 // discover may start with an inode
10046 if (!p
.end() && next
== MDiscoverReply::INODE
) {
10047 cur
= add_replica_inode(p
, NULL
, finished
);
10048 dout(7) << "discover_reply got base inode " << *cur
<< dendl
;
10049 assert(cur
->is_base());
10051 next
= MDiscoverReply::DIR;
10054 if (cur
->is_base() &&
10055 waiting_for_base_ino
[from
].count(cur
->ino())) {
10056 finished
.swap(waiting_for_base_ino
[from
][cur
->ino()]);
10057 waiting_for_base_ino
[from
].erase(cur
->ino());
10062 // loop over discover results.
10063 // indexes follow each ([[dir] dentry] inode)
10064 // can start, end with any type.
10069 if (next
== MDiscoverReply::DIR) {
10070 curdir
= add_replica_dir(p
, cur
, mds_rank_t(m
->get_source().num()), finished
);
10071 if (cur
->ino() == m
->get_base_ino() && curdir
->get_frag() != m
->get_base_dir_frag()) {
10072 assert(m
->get_wanted_base_dir());
10073 cur
->take_dir_waiting(m
->get_base_dir_frag(), finished
);
10076 // note: this can only happen our first way around this loop.
10077 if (p
.end() && m
->is_flag_error_dn()) {
10078 fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10079 curdir
= cur
->get_dirfrag(fg
);
10081 curdir
= cur
->get_dirfrag(m
->get_base_dir_frag());
10088 CDentry
*dn
= add_replica_dentry(p
, curdir
, finished
);
10094 cur
= add_replica_inode(p
, dn
, finished
);
10096 next
= MDiscoverReply::DIR;
10100 // or dir_auth hint?
10101 if (m
->is_flag_error_dir() && !cur
->is_dir()) {
10103 cur
->take_waiting(CInode::WAIT_DIR
, error
);
10104 } else if (m
->is_flag_error_dir() || m
->get_dir_auth_hint() != CDIR_AUTH_UNKNOWN
) {
10105 mds_rank_t who
= m
->get_dir_auth_hint();
10106 if (who
== mds
->get_nodeid()) who
= -1;
10108 dout(7) << " dir_auth_hint is " << m
->get_dir_auth_hint() << dendl
;
10111 if (m
->get_wanted_base_dir()) {
10112 frag_t fg
= m
->get_base_dir_frag();
10113 CDir
*dir
= cur
->get_dirfrag(fg
);
10115 if (cur
->is_waiting_for_dir(fg
)) {
10116 if (cur
->is_auth())
10117 cur
->take_waiting(CInode::WAIT_DIR
, finished
);
10118 else if (dir
|| !cur
->dirfragtree
.is_leaf(fg
))
10119 cur
->take_dir_waiting(fg
, finished
);
10121 discover_dir_frag(cur
, fg
, 0, who
);
10123 dout(7) << " doing nothing, nobody is waiting for dir" << dendl
;
10127 if (m
->get_error_dentry().length()) {
10128 frag_t fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10129 CDir
*dir
= cur
->get_dirfrag(fg
);
10131 if (dir
&& dir
->is_waiting_for_dentry(m
->get_error_dentry(), m
->get_wanted_snapid())) {
10132 if (dir
->is_auth() || dir
->lookup(m
->get_error_dentry())) {
10133 dir
->take_dentry_waiting(m
->get_error_dentry(), m
->get_wanted_snapid(),
10134 m
->get_wanted_snapid(), finished
);
10136 filepath
relpath(m
->get_error_dentry(), 0);
10137 discover_path(dir
, m
->get_wanted_snapid(), relpath
, 0, m
->get_wanted_xlocked());
10140 dout(7) << " doing nothing, have dir but nobody is waiting on dentry "
10141 << m
->get_error_dentry() << dendl
;
10143 } else if (m
->is_flag_error_dn()) {
10144 frag_t fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10145 CDir
*dir
= cur
->get_dirfrag(fg
);
10147 if (dir
->is_auth()) {
10148 dir
->take_sub_waiting(finished
);
10150 dir
->take_dentry_waiting(m
->get_error_dentry(), m
->get_wanted_snapid(),
10151 m
->get_wanted_snapid(), error
);
10157 finish_contexts(g_ceph_context
, error
, -ENOENT
); // finish errors directly
10158 mds
->queue_waiters(finished
);
10166 // ----------------------------
10170 void MDCache::replicate_dir(CDir
*dir
, mds_rank_t to
, bufferlist
& bl
)
10172 dirfrag_t df
= dir
->dirfrag();
10174 dir
->encode_replica(to
, bl
);
10177 void MDCache::replicate_dentry(CDentry
*dn
, mds_rank_t to
, bufferlist
& bl
)
10179 ::encode(dn
->name
, bl
);
10180 ::encode(dn
->last
, bl
);
10181 dn
->encode_replica(to
, bl
, mds
->get_state() < MDSMap::STATE_ACTIVE
);
10184 void MDCache::replicate_inode(CInode
*in
, mds_rank_t to
, bufferlist
& bl
,
10187 ::encode(in
->inode
.ino
, bl
); // bleh, minor assymetry here
10188 ::encode(in
->last
, bl
);
10189 in
->encode_replica(to
, bl
, features
, mds
->get_state() < MDSMap::STATE_ACTIVE
);
10192 CDir
*MDCache::add_replica_dir(bufferlist::iterator
& p
, CInode
*diri
, mds_rank_t from
,
10193 list
<MDSInternalContextBase
*>& finished
)
10198 assert(diri
->ino() == df
.ino
);
10200 // add it (_replica_)
10201 CDir
*dir
= diri
->get_dirfrag(df
.frag
);
10204 // had replica. update w/ new nonce.
10205 dir
->decode_replica(p
);
10206 dout(7) << "add_replica_dir had " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10208 // force frag to leaf in the diri tree
10209 if (!diri
->dirfragtree
.is_leaf(df
.frag
)) {
10210 dout(7) << "add_replica_dir forcing frag " << df
.frag
<< " to leaf in the fragtree "
10211 << diri
->dirfragtree
<< dendl
;
10212 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, df
.frag
);
10216 dir
= diri
->add_dirfrag( new CDir(diri
, df
.frag
, this, false) );
10217 dir
->decode_replica(p
);
10219 // is this a dir_auth delegation boundary?
10220 if (from
!= diri
->authority().first
||
10221 diri
->is_ambiguous_auth() ||
10223 adjust_subtree_auth(dir
, from
);
10225 dout(7) << "add_replica_dir added " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10228 diri
->take_dir_waiting(df
.frag
, finished
);
10234 CDentry
*MDCache::add_replica_dentry(bufferlist::iterator
& p
, CDir
*dir
, list
<MDSInternalContextBase
*>& finished
)
10241 CDentry
*dn
= dir
->lookup(name
, last
);
10245 dn
->decode_replica(p
, false);
10246 dout(7) << "add_replica_dentry had " << *dn
<< dendl
;
10248 dn
= dir
->add_null_dentry(name
, 1 /* this will get updated below */, last
);
10249 dn
->decode_replica(p
, true);
10250 dout(7) << "add_replica_dentry added " << *dn
<< dendl
;
10253 dir
->take_dentry_waiting(name
, dn
->first
, dn
->last
, finished
);
10258 CInode
*MDCache::add_replica_inode(bufferlist::iterator
& p
, CDentry
*dn
, list
<MDSInternalContextBase
*>& finished
)
10264 CInode
*in
= get_inode(ino
, last
);
10266 in
= new CInode(this, false, 1, last
);
10267 in
->decode_replica(p
, true);
10269 if (in
->ino() == MDS_INO_ROOT
)
10270 in
->inode_auth
.first
= 0;
10271 else if (in
->is_mdsdir())
10272 in
->inode_auth
.first
= in
->ino() - MDS_INO_MDSDIR_OFFSET
;
10273 dout(10) << "add_replica_inode added " << *in
<< dendl
;
10275 assert(dn
->get_linkage()->is_null());
10276 dn
->dir
->link_primary_inode(dn
, in
);
10279 in
->decode_replica(p
, false);
10280 dout(10) << "add_replica_inode had " << *in
<< dendl
;
10284 if (!dn
->get_linkage()->is_primary() || dn
->get_linkage()->get_inode() != in
)
10285 dout(10) << "add_replica_inode different linkage in dentry " << *dn
<< dendl
;
10292 void MDCache::replicate_stray(CDentry
*straydn
, mds_rank_t who
, bufferlist
& bl
)
10294 uint64_t features
= mds
->mdsmap
->get_up_features();
10295 replicate_inode(get_myin(), who
, bl
, features
);
10296 replicate_dir(straydn
->get_dir()->inode
->get_parent_dn()->get_dir(), who
, bl
);
10297 replicate_dentry(straydn
->get_dir()->inode
->get_parent_dn(), who
, bl
);
10298 replicate_inode(straydn
->get_dir()->inode
, who
, bl
, features
);
10299 replicate_dir(straydn
->get_dir(), who
, bl
);
10300 replicate_dentry(straydn
, who
, bl
);
10303 CDentry
*MDCache::add_replica_stray(bufferlist
&bl
, mds_rank_t from
)
10305 list
<MDSInternalContextBase
*> finished
;
10306 bufferlist::iterator p
= bl
.begin();
10308 CInode
*mdsin
= add_replica_inode(p
, NULL
, finished
);
10309 CDir
*mdsdir
= add_replica_dir(p
, mdsin
, from
, finished
);
10310 CDentry
*straydirdn
= add_replica_dentry(p
, mdsdir
, finished
);
10311 CInode
*strayin
= add_replica_inode(p
, straydirdn
, finished
);
10312 CDir
*straydir
= add_replica_dir(p
, strayin
, from
, finished
);
10313 CDentry
*straydn
= add_replica_dentry(p
, straydir
, finished
);
10314 if (!finished
.empty())
10315 mds
->queue_waiters(finished
);
10321 int MDCache::send_dir_updates(CDir
*dir
, bool bcast
)
10323 // this is an FYI, re: replication
10325 set
<mds_rank_t
> who
;
10327 mds
->get_mds_map()->get_active_mds_set(who
);
10329 for (const auto &p
: dir
->get_replicas()) {
10330 who
.insert(p
.first
);
10334 dout(7) << "sending dir_update on " << *dir
<< " bcast " << bcast
<< " to " << who
<< dendl
;
10337 dir
->inode
->make_path(path
);
10339 mds_rank_t whoami
= mds
->get_nodeid();
10340 for (set
<mds_rank_t
>::iterator it
= who
.begin();
10343 if (*it
== whoami
) continue;
10344 //if (*it == except) continue;
10345 dout(7) << "sending dir_update on " << *dir
<< " to " << *it
<< dendl
;
10347 mds
->send_message_mds(new MDirUpdate(mds
->get_nodeid(),
10359 /* This function DOES put the passed message before returning */
10360 void MDCache::handle_dir_update(MDirUpdate
*m
)
10362 dirfrag_t df
= m
->get_dirfrag();
10363 CDir
*dir
= get_dirfrag(df
);
10365 dout(5) << "dir_update on " << df
<< ", don't have it" << dendl
;
10368 if (m
->should_discover()) {
10370 // this is key to avoid a fragtree update race, among other things.
10371 m
->inc_tried_discover();
10372 vector
<CDentry
*> trace
;
10374 filepath path
= m
->get_path();
10375 dout(5) << "trying discover on dir_update for " << path
<< dendl
;
10376 MDRequestRef null_ref
;
10377 int r
= path_traverse(null_ref
, m
, NULL
, path
, &trace
, &in
, MDS_TRAVERSE_DISCOVER
);
10381 in
->ino() == df
.ino
&&
10382 in
->get_approx_dirfrag(df
.frag
) == NULL
) {
10383 open_remote_dirfrag(in
, df
.frag
, new C_MDS_RetryMessage(mds
, m
));
10392 if (!m
->has_tried_discover()) {
10393 // Update if it already exists. Othwerwise it got updated by discover reply.
10394 dout(5) << "dir_update on " << *dir
<< dendl
;
10395 dir
->dir_rep
= m
->get_dir_rep();
10396 dir
->dir_rep_by
= m
->get_dir_rep_by();
10409 void MDCache::send_dentry_link(CDentry
*dn
, MDRequestRef
& mdr
)
10411 dout(7) << "send_dentry_link " << *dn
<< dendl
;
10413 CDir
*subtree
= get_subtree_root(dn
->get_dir());
10414 for (const auto &p
: dn
->get_replicas()) {
10415 // don't tell (rename) witnesses; they already know
10416 if (mdr
.get() && mdr
->more()->witnessed
.count(p
.first
))
10418 if (mds
->mdsmap
->get_state(p
.first
) < MDSMap::STATE_REJOIN
||
10419 (mds
->mdsmap
->get_state(p
.first
) == MDSMap::STATE_REJOIN
&&
10420 rejoin_gather
.count(p
.first
)))
10422 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10423 MDentryLink
*m
= new MDentryLink(subtree
->dirfrag(), dn
->get_dir()->dirfrag(),
10424 dn
->name
, dnl
->is_primary());
10425 if (dnl
->is_primary()) {
10426 dout(10) << " primary " << *dnl
->get_inode() << dendl
;
10427 replicate_inode(dnl
->get_inode(), p
.first
, m
->bl
,
10428 mds
->mdsmap
->get_up_features());
10429 } else if (dnl
->is_remote()) {
10430 inodeno_t ino
= dnl
->get_remote_ino();
10431 __u8 d_type
= dnl
->get_remote_d_type();
10432 dout(10) << " remote " << ino
<< " " << d_type
<< dendl
;
10433 ::encode(ino
, m
->bl
);
10434 ::encode(d_type
, m
->bl
);
10436 ceph_abort(); // aie, bad caller!
10437 mds
->send_message_mds(m
, p
.first
);
10441 /* This function DOES put the passed message before returning */
10442 void MDCache::handle_dentry_link(MDentryLink
*m
)
10445 CDentry
*dn
= NULL
;
10446 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10448 dout(7) << "handle_dentry_link don't have dirfrag " << m
->get_dirfrag() << dendl
;
10450 dn
= dir
->lookup(m
->get_dn());
10452 dout(7) << "handle_dentry_link don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10454 dout(7) << "handle_dentry_link on " << *dn
<< dendl
;
10455 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10457 assert(!dn
->is_auth());
10458 assert(dnl
->is_null());
10462 bufferlist::iterator p
= m
->bl
.begin();
10463 list
<MDSInternalContextBase
*> finished
;
10465 if (m
->get_is_primary()) {
10467 add_replica_inode(p
, dn
, finished
);
10469 // remote link, easy enough.
10473 ::decode(d_type
, p
);
10474 dir
->link_remote_inode(dn
, ino
, d_type
);
10480 if (!finished
.empty())
10481 mds
->queue_waiters(finished
);
10490 void MDCache::send_dentry_unlink(CDentry
*dn
, CDentry
*straydn
, MDRequestRef
& mdr
)
10492 dout(10) << "send_dentry_unlink " << *dn
<< dendl
;
10493 // share unlink news with replicas
10494 set
<mds_rank_t
> replicas
;
10495 dn
->list_replicas(replicas
);
10497 straydn
->list_replicas(replicas
);
10498 for (set
<mds_rank_t
>::iterator it
= replicas
.begin();
10499 it
!= replicas
.end();
10501 // don't tell (rmdir) witnesses; they already know
10502 if (mdr
.get() && mdr
->more()->witnessed
.count(*it
))
10505 if (mds
->mdsmap
->get_state(*it
) < MDSMap::STATE_REJOIN
||
10506 (mds
->mdsmap
->get_state(*it
) == MDSMap::STATE_REJOIN
&&
10507 rejoin_gather
.count(*it
)))
10510 MDentryUnlink
*unlink
= new MDentryUnlink(dn
->get_dir()->dirfrag(), dn
->name
);
10512 replicate_stray(straydn
, *it
, unlink
->straybl
);
10513 mds
->send_message_mds(unlink
, *it
);
10517 /* This function DOES put the passed message before returning */
10518 void MDCache::handle_dentry_unlink(MDentryUnlink
*m
)
10521 CDentry
*straydn
= NULL
;
10522 if (m
->straybl
.length())
10523 straydn
= add_replica_stray(m
->straybl
, mds_rank_t(m
->get_source().num()));
10525 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10527 dout(7) << "handle_dentry_unlink don't have dirfrag " << m
->get_dirfrag() << dendl
;
10529 CDentry
*dn
= dir
->lookup(m
->get_dn());
10531 dout(7) << "handle_dentry_unlink don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10533 dout(7) << "handle_dentry_unlink on " << *dn
<< dendl
;
10534 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10537 if (dnl
->is_primary()) {
10538 CInode
*in
= dnl
->get_inode();
10539 dn
->dir
->unlink_inode(dn
);
10541 straydn
->dir
->link_primary_inode(straydn
, in
);
10543 // in->first is lazily updated on replica; drag it forward so
10544 // that we always keep it in sync with the dnq
10545 assert(straydn
->first
>= in
->first
);
10546 in
->first
= straydn
->first
;
10548 // update subtree map?
10550 adjust_subtree_after_rename(in
, dir
, false);
10552 // send caps to auth (if we're not already)
10553 if (in
->is_any_caps() &&
10554 !in
->state_test(CInode::STATE_EXPORTINGCAPS
))
10555 migrator
->export_caps(in
);
10560 assert(dnl
->is_remote());
10561 dn
->dir
->unlink_inode(dn
);
10563 assert(dnl
->is_null());
10567 // race with trim_dentry()
10569 assert(straydn
->get_num_ref() == 0);
10570 assert(straydn
->get_linkage()->is_null());
10571 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
10572 trim_dentry(straydn
, expiremap
);
10573 send_expire_messages(expiremap
);
10585 // ===================================================================
10589 // ===================================================================
10594 * adjust_dir_fragments -- adjust fragmentation for a directory
10596 * @param diri directory inode
10597 * @param basefrag base fragment
10598 * @param bits bit adjustment. positive for split, negative for merge.
10600 void MDCache::adjust_dir_fragments(CInode
*diri
, frag_t basefrag
, int bits
,
10601 list
<CDir
*>& resultfrags
,
10602 list
<MDSInternalContextBase
*>& waiters
,
10605 dout(10) << "adjust_dir_fragments " << basefrag
<< " " << bits
10606 << " on " << *diri
<< dendl
;
10608 list
<CDir
*> srcfrags
;
10609 diri
->get_dirfrags_under(basefrag
, srcfrags
);
10611 adjust_dir_fragments(diri
, srcfrags
, basefrag
, bits
, resultfrags
, waiters
, replay
);
10614 CDir
*MDCache::force_dir_fragment(CInode
*diri
, frag_t fg
, bool replay
)
10616 CDir
*dir
= diri
->get_dirfrag(fg
);
10620 dout(10) << "force_dir_fragment " << fg
<< " on " << *diri
<< dendl
;
10622 list
<CDir
*> src
, result
;
10623 list
<MDSInternalContextBase
*> waiters
;
10626 frag_t parent
= diri
->dirfragtree
.get_branch_or_leaf(fg
);
10628 CDir
*pdir
= diri
->get_dirfrag(parent
);
10630 int split
= fg
.bits() - parent
.bits();
10631 dout(10) << " splitting parent by " << split
<< " " << *pdir
<< dendl
;
10632 src
.push_back(pdir
);
10633 adjust_dir_fragments(diri
, src
, parent
, split
, result
, waiters
, replay
);
10634 dir
= diri
->get_dirfrag(fg
);
10636 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10640 if (parent
== frag_t())
10642 frag_t last
= parent
;
10643 parent
= parent
.parent();
10644 dout(10) << " " << last
<< " parent is " << parent
<< dendl
;
10648 // hoover up things under fg?
10649 diri
->get_dirfrags_under(fg
, src
);
10651 dout(10) << "force_dir_fragment no frags under " << fg
<< dendl
;
10653 dout(10) << " will combine frags under " << fg
<< ": " << src
<< dendl
;
10654 adjust_dir_fragments(diri
, src
, fg
, 0, result
, waiters
, replay
);
10655 dir
= result
.front();
10656 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10660 mds
->queue_waiters(waiters
);
10664 void MDCache::adjust_dir_fragments(CInode
*diri
,
10665 list
<CDir
*>& srcfrags
,
10666 frag_t basefrag
, int bits
,
10667 list
<CDir
*>& resultfrags
,
10668 list
<MDSInternalContextBase
*>& waiters
,
10671 dout(10) << "adjust_dir_fragments " << basefrag
<< " bits " << bits
10672 << " srcfrags " << srcfrags
10673 << " on " << *diri
<< dendl
;
10676 // yuck. we may have discovered the inode while it was being fragmented.
10677 if (!diri
->dirfragtree
.is_leaf(basefrag
))
10678 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, basefrag
);
10681 diri
->dirfragtree
.split(basefrag
, bits
);
10682 dout(10) << " new fragtree is " << diri
->dirfragtree
<< dendl
;
10684 if (srcfrags
.empty())
10688 CDir
*parent_dir
= diri
->get_parent_dir();
10689 CDir
*parent_subtree
= 0;
10691 parent_subtree
= get_subtree_root(parent_dir
);
10695 assert(srcfrags
.size() == 1);
10696 CDir
*dir
= srcfrags
.front();
10698 dir
->split(bits
, resultfrags
, waiters
, replay
);
10700 // did i change the subtree map?
10701 if (dir
->is_subtree_root()) {
10702 // new frags are now separate subtrees
10703 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10704 p
!= resultfrags
.end();
10706 subtrees
[*p
].clear(); // new frag is now its own subtree
10709 if (parent_subtree
) {
10710 assert(subtrees
[parent_subtree
].count(dir
));
10711 subtrees
[parent_subtree
].erase(dir
);
10712 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10713 p
!= resultfrags
.end();
10715 assert((*p
)->is_subtree_root());
10716 subtrees
[parent_subtree
].insert(*p
);
10720 // adjust my bounds.
10722 bounds
.swap(subtrees
[dir
]);
10723 subtrees
.erase(dir
);
10724 for (set
<CDir
*>::iterator p
= bounds
.begin();
10727 CDir
*frag
= get_subtree_root((*p
)->get_parent_dir());
10728 subtrees
[frag
].insert(*p
);
10733 // dir has no PIN_SUBTREE; CDir::purge_stolen() drops it.
10734 dir
->dir_auth
= CDIR_AUTH_DEFAULT
;
10737 diri
->close_dirfrag(dir
->get_frag());
10742 // are my constituent bits subtrees? if so, i will be too.
10743 // (it's all or none, actually.)
10744 bool any_subtree
= false;
10745 for (CDir
*dir
: srcfrags
) {
10746 if (dir
->is_subtree_root()) {
10747 any_subtree
= true;
10751 set
<CDir
*> new_bounds
;
10753 for (CDir
*dir
: srcfrags
) {
10754 // this simplifies the code that find subtrees underneath the dirfrag
10755 if (!dir
->is_subtree_root()) {
10756 dir
->state_set(CDir::STATE_AUXSUBTREE
);
10757 adjust_subtree_auth(dir
, mds
->get_nodeid());
10761 for (CDir
*dir
: srcfrags
) {
10762 assert(dir
->is_subtree_root());
10763 dout(10) << " taking srcfrag subtree bounds from " << *dir
<< dendl
;
10764 map
<CDir
*, set
<CDir
*> >::iterator q
= subtrees
.find(dir
);
10765 set
<CDir
*>::iterator r
= q
->second
.begin();
10766 while (r
!= subtrees
[dir
].end()) {
10767 new_bounds
.insert(*r
);
10768 subtrees
[dir
].erase(r
++);
10772 // remove myself as my parent's bound
10773 if (parent_subtree
)
10774 subtrees
[parent_subtree
].erase(dir
);
10779 CDir
*f
= new CDir(diri
, basefrag
, this, srcfrags
.front()->is_auth());
10780 f
->merge(srcfrags
, waiters
, replay
);
10783 assert(f
->is_subtree_root());
10784 subtrees
[f
].swap(new_bounds
);
10785 if (parent_subtree
)
10786 subtrees
[parent_subtree
].insert(f
);
10791 resultfrags
.push_back(f
);
10796 class C_MDC_FragmentFrozen
: public MDSInternalContext
{
10800 C_MDC_FragmentFrozen(MDCache
*m
, MDRequestRef
& r
) :
10801 MDSInternalContext(m
->mds
), mdcache(m
), mdr(r
) {}
10802 void finish(int r
) override
{
10803 mdcache
->fragment_frozen(mdr
, r
);
10807 bool MDCache::can_fragment(CInode
*diri
, list
<CDir
*>& dirs
)
10809 if (is_readonly()) {
10810 dout(7) << "can_fragment: read-only FS, no fragmenting for now" << dendl
;
10813 if (mds
->is_cluster_degraded()) {
10814 dout(7) << "can_fragment: cluster degraded, no fragmenting for now" << dendl
;
10817 if (diri
->get_parent_dir() &&
10818 diri
->get_parent_dir()->get_inode()->is_stray()) {
10819 dout(7) << "can_fragment: i won't merge|split anything in stray" << dendl
;
10822 if (diri
->is_mdsdir() || diri
->is_stray() || diri
->ino() == MDS_INO_CEPH
) {
10823 dout(7) << "can_fragment: i won't fragment the mdsdir or straydir or .ceph" << dendl
;
10827 if (diri
->scrub_is_in_progress()) {
10828 dout(7) << "can_fragment: scrub in progress" << dendl
;
10832 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10834 if (dir
->state_test(CDir::STATE_FRAGMENTING
)) {
10835 dout(7) << "can_fragment: already fragmenting " << *dir
<< dendl
;
10838 if (!dir
->is_auth()) {
10839 dout(7) << "can_fragment: not auth on " << *dir
<< dendl
;
10842 if (dir
->is_bad()) {
10843 dout(7) << "can_fragment: bad dirfrag " << *dir
<< dendl
;
10846 if (dir
->is_frozen() ||
10847 dir
->is_freezing()) {
10848 dout(7) << "can_fragment: can't merge, freezing|frozen. wait for other exports to finish first." << dendl
;
10856 void MDCache::split_dir(CDir
*dir
, int bits
)
10858 dout(7) << __func__
<< " " << *dir
<< " bits " << bits
<< dendl
;
10859 assert(dir
->is_auth());
10860 CInode
*diri
= dir
->inode
;
10863 dirs
.push_back(dir
);
10865 if (!can_fragment(diri
, dirs
)) {
10866 dout(7) << __func__
<< " cannot fragment right now, dropping" << dendl
;
10870 if (dir
->frag
.bits() + bits
> 24) {
10871 dout(7) << __func__
<< " frag bits > 24, dropping" << dendl
;
10875 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10876 mdr
->more()->fragment_base
= dir
->dirfrag();
10878 assert(fragments
.count(dir
->dirfrag()) == 0);
10879 fragment_info_t
& info
= fragments
[dir
->dirfrag()];
10881 info
.dirs
.push_back(dir
);
10883 info
.last_cum_auth_pins_change
= ceph_clock_now();
10885 fragment_freeze_dirs(dirs
);
10886 // initial mark+complete pass
10887 fragment_mark_and_complete(mdr
);
10890 void MDCache::merge_dir(CInode
*diri
, frag_t frag
)
10892 dout(7) << "merge_dir to " << frag
<< " on " << *diri
<< dendl
;
10895 if (!diri
->get_dirfrags_under(frag
, dirs
)) {
10896 dout(7) << "don't have all frags under " << frag
<< " for " << *diri
<< dendl
;
10900 if (diri
->dirfragtree
.is_leaf(frag
)) {
10901 dout(10) << " " << frag
<< " already a leaf for " << *diri
<< dendl
;
10905 if (!can_fragment(diri
, dirs
))
10908 CDir
*first
= dirs
.front();
10909 int bits
= first
->get_frag().bits() - frag
.bits();
10910 dout(10) << " we are merginb by " << bits
<< " bits" << dendl
;
10912 dirfrag_t
basedirfrag(diri
->ino(), frag
);
10913 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10914 mdr
->more()->fragment_base
= basedirfrag
;
10916 assert(fragments
.count(basedirfrag
) == 0);
10917 fragment_info_t
& info
= fragments
[basedirfrag
];
10921 info
.last_cum_auth_pins_change
= ceph_clock_now();
10923 fragment_freeze_dirs(dirs
);
10924 // initial mark+complete pass
10925 fragment_mark_and_complete(mdr
);
10928 void MDCache::fragment_freeze_dirs(list
<CDir
*>& dirs
)
10930 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10932 dir
->auth_pin(dir
); // until we mark and complete them
10933 dir
->state_set(CDir::STATE_FRAGMENTING
);
10935 assert(dir
->is_freezing_dir());
10939 class C_MDC_FragmentMarking
: public MDCacheContext
{
10942 C_MDC_FragmentMarking(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
10943 void finish(int r
) override
{
10944 mdcache
->fragment_mark_and_complete(mdr
);
10948 void MDCache::fragment_mark_and_complete(MDRequestRef
& mdr
)
10950 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
10951 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
10952 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
10953 dout(7) << "fragment_mark_and_complete " << basedirfrag
<< " must have aborted" << dendl
;
10954 request_finish(mdr
);
10958 fragment_info_t
& info
= it
->second
;
10959 CInode
*diri
= info
.dirs
.front()->get_inode();
10960 dout(10) << "fragment_mark_and_complete " << info
.dirs
<< " on " << *diri
<< dendl
;
10962 MDSGatherBuilder
gather(g_ceph_context
);
10964 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
10965 p
!= info
.dirs
.end();
10970 if (!dir
->is_complete()) {
10971 dout(15) << " fetching incomplete " << *dir
<< dendl
;
10972 dir
->fetch(gather
.new_sub(), true); // ignore authpinnability
10974 } else if (dir
->get_frag() == frag_t()) {
10975 // The COMPLETE flag gets lost if we fragment a new dirfrag, then rollback
10976 // the operation. To avoid CDir::fetch() complaining about missing object,
10977 // we commit new dirfrag first.
10978 if (dir
->state_test(CDir::STATE_CREATING
)) {
10979 dout(15) << " waiting until new dir gets journaled " << *dir
<< dendl
;
10980 dir
->add_waiter(CDir::WAIT_CREATED
, gather
.new_sub());
10982 } else if (dir
->is_new()) {
10983 dout(15) << " committing new " << *dir
<< dendl
;
10984 assert(dir
->is_dirty());
10985 dir
->commit(0, gather
.new_sub(), true);
10992 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
10993 dout(15) << " marking " << *dir
<< dendl
;
10994 for (CDir::map_t::iterator p
= dir
->items
.begin();
10995 p
!= dir
->items
.end();
10997 CDentry
*dn
= p
->second
;
10998 dn
->get(CDentry::PIN_FRAGMENTING
);
10999 assert(!dn
->state_test(CDentry::STATE_FRAGMENTING
));
11000 dn
->state_set(CDentry::STATE_FRAGMENTING
);
11002 dir
->state_set(CDir::STATE_DNPINNEDFRAG
);
11003 dir
->auth_unpin(dir
);
11005 dout(15) << " already marked " << *dir
<< dendl
;
11008 if (gather
.has_subs()) {
11009 gather
.set_finisher(new C_MDC_FragmentMarking(this, mdr
));
11014 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
11015 p
!= info
.dirs
.end();
11018 if (!dir
->is_frozen_dir()) {
11019 assert(dir
->is_freezing_dir());
11020 dir
->add_waiter(CDir::WAIT_FROZEN
, gather
.new_sub());
11023 if (gather
.has_subs()) {
11024 gather
.set_finisher(new C_MDC_FragmentFrozen(this, mdr
));
11026 // flush log so that request auth_pins are retired
11027 mds
->mdlog
->flush();
11031 fragment_frozen(mdr
, 0);
11034 void MDCache::fragment_unmark_unfreeze_dirs(list
<CDir
*>& dirs
)
11036 dout(10) << "fragment_unmark_unfreeze_dirs " << dirs
<< dendl
;
11037 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
11039 dout(10) << " frag " << *dir
<< dendl
;
11041 assert(dir
->state_test(CDir::STATE_FRAGMENTING
));
11042 dir
->state_clear(CDir::STATE_FRAGMENTING
);
11044 if (dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
11045 dir
->state_clear(CDir::STATE_DNPINNEDFRAG
);
11047 for (CDir::map_t::iterator p
= dir
->items
.begin();
11048 p
!= dir
->items
.end();
11050 CDentry
*dn
= p
->second
;
11051 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
11052 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
11053 dn
->put(CDentry::PIN_FRAGMENTING
);
11056 dir
->auth_unpin(dir
);
11059 dir
->unfreeze_dir();
11063 bool MDCache::fragment_are_all_frozen(CDir
*dir
)
11065 assert(dir
->is_frozen_dir());
11066 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
11067 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
11068 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
11070 if (p
->first
.frag
.contains(dir
->get_frag()))
11071 return p
->second
.all_frozen
;
11077 void MDCache::fragment_freeze_inc_num_waiters(CDir
*dir
)
11079 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
11080 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
11081 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
11083 if (p
->first
.frag
.contains(dir
->get_frag())) {
11084 p
->second
.num_remote_waiters
++;
11091 void MDCache::find_stale_fragment_freeze()
11093 dout(10) << "find_stale_fragment_freeze" << dendl
;
11094 // see comment in Migrator::find_stale_export_freeze()
11095 utime_t now
= ceph_clock_now();
11096 utime_t cutoff
= now
;
11097 cutoff
-= g_conf
->mds_freeze_tree_timeout
;
11099 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
11100 p
!= fragments
.end(); ) {
11101 dirfrag_t df
= p
->first
;
11102 fragment_info_t
& info
= p
->second
;
11104 if (info
.all_frozen
)
11107 int total_auth_pins
= 0;
11108 for (list
<CDir
*>::iterator q
= info
.dirs
.begin();
11109 q
!= info
.dirs
.end();
11112 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
11113 total_auth_pins
= -1;
11116 if (dir
->is_frozen_dir())
11118 total_auth_pins
+= dir
->get_auth_pins() + dir
->get_dir_auth_pins();
11120 if (total_auth_pins
< 0)
11122 if (info
.last_cum_auth_pins
!= total_auth_pins
) {
11123 info
.last_cum_auth_pins
= total_auth_pins
;
11124 info
.last_cum_auth_pins_change
= now
;
11127 if (info
.last_cum_auth_pins_change
>= cutoff
)
11129 dir
= info
.dirs
.front();
11130 if (info
.num_remote_waiters
> 0 ||
11131 (!dir
->inode
->is_root() && dir
->get_parent_dir()->is_freezing())) {
11132 dout(10) << " cancel fragmenting " << df
<< " bit " << info
.bits
<< dendl
;
11134 info
.dirs
.swap(dirs
);
11135 fragments
.erase(df
);
11136 fragment_unmark_unfreeze_dirs(dirs
);
11141 class C_MDC_FragmentPrep
: public MDCacheLogContext
{
11144 C_MDC_FragmentPrep(MDCache
*m
, MDRequestRef
& r
) : MDCacheLogContext(m
), mdr(r
) {}
11145 void finish(int r
) override
{
11146 mdcache
->_fragment_logged(mdr
);
11150 class C_MDC_FragmentStore
: public MDCacheContext
{
11153 C_MDC_FragmentStore(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
11154 void finish(int r
) override
{
11155 mdcache
->_fragment_stored(mdr
);
11159 class C_MDC_FragmentCommit
: public MDCacheLogContext
{
11160 dirfrag_t basedirfrag
;
11161 list
<CDir
*> resultfrags
;
11163 C_MDC_FragmentCommit(MDCache
*m
, dirfrag_t df
, list
<CDir
*>& l
) :
11164 MDCacheLogContext(m
), basedirfrag(df
), resultfrags(l
) {}
11165 void finish(int r
) override
{
11166 mdcache
->_fragment_committed(basedirfrag
, resultfrags
);
11170 class C_IO_MDC_FragmentFinish
: public MDCacheIOContext
{
11171 dirfrag_t basedirfrag
;
11172 list
<CDir
*> resultfrags
;
11174 C_IO_MDC_FragmentFinish(MDCache
*m
, dirfrag_t f
, list
<CDir
*>& l
) :
11175 MDCacheIOContext(m
), basedirfrag(f
) {
11176 resultfrags
.swap(l
);
11178 void finish(int r
) override
{
11179 assert(r
== 0 || r
== -ENOENT
);
11180 mdcache
->_fragment_finish(basedirfrag
, resultfrags
);
11184 void MDCache::fragment_frozen(MDRequestRef
& mdr
, int r
)
11186 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11187 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11188 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11189 dout(7) << "fragment_frozen " << basedirfrag
<< " must have aborted" << dendl
;
11190 request_finish(mdr
);
11195 fragment_info_t
& info
= it
->second
;
11196 dout(10) << "fragment_frozen " << basedirfrag
.frag
<< " by " << info
.bits
11197 << " on " << info
.dirs
.front()->get_inode() << dendl
;
11199 info
.all_frozen
= true;
11200 dispatch_fragment_dir(mdr
);
11203 void MDCache::dispatch_fragment_dir(MDRequestRef
& mdr
)
11205 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11206 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11207 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11208 dout(7) << "dispatch_fragment_dir " << basedirfrag
<< " must have aborted" << dendl
;
11209 request_finish(mdr
);
11213 fragment_info_t
& info
= it
->second
;
11214 CInode
*diri
= info
.dirs
.front()->get_inode();
11216 dout(10) << "dispatch_fragment_dir " << basedirfrag
<< " bits " << info
.bits
11217 << " on " << *diri
<< dendl
;
11218 if (!mdr
->aborted
) {
11219 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
11220 wrlocks
.insert(&diri
->dirfragtreelock
);
11221 // prevent a racing gather on any other scatterlocks too
11222 wrlocks
.insert(&diri
->nestlock
);
11223 wrlocks
.insert(&diri
->filelock
);
11224 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
, NULL
, NULL
, true))
11229 if (mdr
->aborted
) {
11230 dout(10) << " can't auth_pin " << *diri
<< ", requeuing dir "
11231 << info
.dirs
.front()->dirfrag() << dendl
;
11233 mds
->balancer
->queue_split(info
.dirs
.front(), false);
11235 mds
->balancer
->queue_merge(info
.dirs
.front());
11236 fragment_unmark_unfreeze_dirs(info
.dirs
);
11237 fragments
.erase(it
);
11238 request_finish(mdr
);
11242 mdr
->ls
= mds
->mdlog
->get_current_segment();
11243 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_PREPARE
, basedirfrag
, info
.bits
);
11244 mds
->mdlog
->start_entry(le
);
11246 for (list
<CDir
*>::iterator p
= info
.dirs
.begin(); p
!= info
.dirs
.end(); ++p
) {
11248 dirfrag_rollback rollback
;
11249 rollback
.fnode
= dir
->fnode
;
11250 le
->add_orig_frag(dir
->get_frag(), &rollback
);
11254 list
<MDSInternalContextBase
*> waiters
;
11255 adjust_dir_fragments(diri
, info
.dirs
, basedirfrag
.frag
, info
.bits
,
11256 info
.resultfrags
, waiters
, false);
11257 if (g_conf
->mds_debug_frag
)
11258 diri
->verify_dirfrags();
11259 mds
->queue_waiters(waiters
);
11261 for (list
<frag_t
>::iterator p
= le
->orig_frags
.begin(); p
!= le
->orig_frags
.end(); ++p
)
11262 assert(!diri
->dirfragtree
.is_leaf(*p
));
11264 le
->metablob
.add_dir_context(*info
.resultfrags
.begin());
11265 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11266 p
!= info
.resultfrags
.end();
11268 if (diri
->is_auth()) {
11269 le
->metablob
.add_fragmented_dir(*p
, false, false);
11271 (*p
)->state_set(CDir::STATE_DIRTYDFT
);
11272 le
->metablob
.add_fragmented_dir(*p
, false, true);
11277 if (diri
->is_auth()) {
11278 // journal dirfragtree
11279 inode_t
*pi
= diri
->project_inode();
11280 pi
->version
= diri
->pre_dirty();
11281 journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
11283 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11284 mdr
->ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11285 mdr
->add_updated_lock(&diri
->dirfragtreelock
);
11290 mds->locker->mark_updated_scatterlock(&diri->filelock);
11291 mut->ls->dirty_dirfrag_dir.push_back(&diri->item_dirty_dirfrag_dir);
11292 mut->add_updated_lock(&diri->filelock);
11295 mds->locker->mark_updated_scatterlock(&diri->nestlock);
11296 mut->ls->dirty_dirfrag_nest.push_back(&diri->item_dirty_dirfrag_nest);
11297 mut->add_updated_lock(&diri->nestlock);
11300 add_uncommitted_fragment(basedirfrag
, info
.bits
, le
->orig_frags
, mdr
->ls
);
11301 mds
->server
->submit_mdlog_entry(le
, new C_MDC_FragmentPrep(this, mdr
),
11303 mds
->mdlog
->flush();
11306 void MDCache::_fragment_logged(MDRequestRef
& mdr
)
11308 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11309 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11310 assert(it
!= fragments
.end());
11311 fragment_info_t
&info
= it
->second
;
11312 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11314 dout(10) << "fragment_logged " << basedirfrag
<< " bits " << info
.bits
11315 << " on " << *diri
<< dendl
;
11317 if (diri
->is_auth())
11318 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
11320 mdr
->apply(); // mark scatterlock
11322 // store resulting frags
11323 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_FragmentStore(this, mdr
));
11325 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11326 p
!= info
.resultfrags
.end();
11329 dout(10) << " storing result frag " << *dir
<< dendl
;
11331 // freeze and store them too
11332 dir
->auth_pin(this);
11333 dir
->state_set(CDir::STATE_FRAGMENTING
);
11334 dir
->commit(0, gather
.new_sub(), true); // ignore authpinnability
11340 void MDCache::_fragment_stored(MDRequestRef
& mdr
)
11342 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11343 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11344 assert(it
!= fragments
.end());
11345 fragment_info_t
&info
= it
->second
;
11346 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11348 dout(10) << "fragment_stored " << basedirfrag
<< " bits " << info
.bits
11349 << " on " << *diri
<< dendl
;
11352 CDir
*first
= *info
.resultfrags
.begin();
11353 for (const auto &p
: first
->get_replicas()) {
11354 if (mds
->mdsmap
->get_state(p
.first
) < MDSMap::STATE_REJOIN
||
11355 (mds
->mdsmap
->get_state(p
.first
) == MDSMap::STATE_REJOIN
&&
11356 rejoin_gather
.count(p
.first
)))
11359 MMDSFragmentNotify
*notify
= new MMDSFragmentNotify(basedirfrag
, info
.bits
);
11361 // freshly replicate new dirs to peers
11362 for (list
<CDir
*>::iterator q
= info
.resultfrags
.begin();
11363 q
!= info
.resultfrags
.end();
11365 replicate_dir(*q
, p
.first
, notify
->basebl
);
11367 mds
->send_message_mds(notify
, p
.first
);
11371 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_COMMIT
, basedirfrag
, info
.bits
);
11372 mds
->mdlog
->start_submit_entry(le
, new C_MDC_FragmentCommit(this, basedirfrag
,
11373 info
.resultfrags
));
11375 mds
->locker
->drop_locks(mdr
.get());
11377 // unfreeze resulting frags
11378 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11379 p
!= info
.resultfrags
.end();
11382 dout(10) << " result frag " << *dir
<< dendl
;
11384 for (CDir::map_t::iterator p
= dir
->items
.begin();
11385 p
!= dir
->items
.end();
11387 CDentry
*dn
= p
->second
;
11388 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
11389 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
11390 dn
->put(CDentry::PIN_FRAGMENTING
);
11394 dir
->unfreeze_dir();
11397 fragments
.erase(it
);
11398 request_finish(mdr
);
11401 void MDCache::_fragment_committed(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11403 dout(10) << "fragment_committed " << basedirfrag
<< dendl
;
11404 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11405 assert(it
!= uncommitted_fragments
.end());
11406 ufragment
&uf
= it
->second
;
11408 // remove old frags
11409 C_GatherBuilder
gather(
11412 new C_IO_MDC_FragmentFinish(this, basedirfrag
, resultfrags
),
11415 SnapContext nullsnapc
;
11416 object_locator_t
oloc(mds
->mdsmap
->get_metadata_pool());
11417 for (list
<frag_t
>::iterator p
= uf
.old_frags
.begin();
11418 p
!= uf
.old_frags
.end();
11420 object_t oid
= CInode::get_object_name(basedirfrag
.ino
, *p
, "");
11421 ObjectOperation op
;
11422 if (*p
== frag_t()) {
11423 // backtrace object
11424 dout(10) << " truncate orphan dirfrag " << oid
<< dendl
;
11428 dout(10) << " removing orphan dirfrag " << oid
<< dendl
;
11431 mds
->objecter
->mutate(oid
, oloc
, op
, nullsnapc
,
11432 ceph::real_clock::now(),
11433 0, gather
.new_sub());
11436 assert(gather
.has_subs());
11440 void MDCache::_fragment_finish(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11442 dout(10) << "fragment_finish " << basedirfrag
<< "resultfrags.size="
11443 << resultfrags
.size() << dendl
;
11444 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11445 assert(it
!= uncommitted_fragments
.end());
11446 ufragment
&uf
= it
->second
;
11448 // unmark & auth_unpin
11449 for (const auto &dir
: resultfrags
) {
11450 dir
->state_clear(CDir::STATE_FRAGMENTING
);
11451 dir
->auth_unpin(this);
11453 // In case the resulting fragments are beyond the split size,
11454 // we might need to split them again right away (they could
11455 // have been taking inserts between unfreezing and getting
11457 mds
->balancer
->maybe_fragment(dir
, false);
11461 if (resultfrags
.size() > 1) {
11462 mds
->logger
->inc(l_mds_dir_split
);
11464 mds
->logger
->inc(l_mds_dir_merge
);
11468 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_FINISH
, basedirfrag
, uf
.bits
);
11469 mds
->mdlog
->start_submit_entry(le
);
11471 finish_uncommitted_fragment(basedirfrag
, EFragment::OP_FINISH
);
11474 /* This function DOES put the passed message before returning */
11475 void MDCache::handle_fragment_notify(MMDSFragmentNotify
*notify
)
11477 dout(10) << "handle_fragment_notify " << *notify
<< " from " << notify
->get_source() << dendl
;
11479 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
11484 CInode
*diri
= get_inode(notify
->get_ino());
11486 frag_t base
= notify
->get_basefrag();
11487 int bits
= notify
->get_bits();
11490 if ((bits < 0 && diri->dirfragtree.is_leaf(base)) ||
11491 (bits > 0 && !diri->dirfragtree.is_leaf(base))) {
11492 dout(10) << " dft " << diri->dirfragtree << " state doesn't match " << base << " by " << bits
11493 << ", must have found out during resolve/rejoin? ignoring. " << *diri << dendl;
11500 list
<MDSInternalContextBase
*> waiters
;
11501 list
<CDir
*> resultfrags
;
11502 adjust_dir_fragments(diri
, base
, bits
, resultfrags
, waiters
, false);
11503 if (g_conf
->mds_debug_frag
)
11504 diri
->verify_dirfrags();
11506 for (list
<CDir
*>::iterator p
= resultfrags
.begin(); p
!= resultfrags
.end(); ++p
)
11507 diri
->take_dir_waiting((*p
)->get_frag(), waiters
);
11509 // add new replica dirs values
11510 bufferlist::iterator p
= notify
->basebl
.begin();
11512 add_replica_dir(p
, diri
, mds_rank_t(notify
->get_source().num()), waiters
);
11514 mds
->queue_waiters(waiters
);
11522 void MDCache::add_uncommitted_fragment(dirfrag_t basedirfrag
, int bits
, list
<frag_t
>& old_frags
,
11523 LogSegment
*ls
, bufferlist
*rollback
)
11525 dout(10) << "add_uncommitted_fragment: base dirfrag " << basedirfrag
<< " bits " << bits
<< dendl
;
11526 assert(!uncommitted_fragments
.count(basedirfrag
));
11527 ufragment
& uf
= uncommitted_fragments
[basedirfrag
];
11528 uf
.old_frags
= old_frags
;
11531 ls
->uncommitted_fragments
.insert(basedirfrag
);
11533 uf
.rollback
.swap(*rollback
);
11536 void MDCache::finish_uncommitted_fragment(dirfrag_t basedirfrag
, int op
)
11538 dout(10) << "finish_uncommitted_fragments: base dirfrag " << basedirfrag
11539 << " op " << EFragment::op_name(op
) << dendl
;
11540 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11541 if (it
!= uncommitted_fragments
.end()) {
11542 ufragment
& uf
= it
->second
;
11543 if (op
!= EFragment::OP_FINISH
&& !uf
.old_frags
.empty()) {
11544 uf
.committed
= true;
11546 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11547 mds
->queue_waiters(uf
.waiters
);
11548 uncommitted_fragments
.erase(it
);
11553 void MDCache::rollback_uncommitted_fragment(dirfrag_t basedirfrag
, list
<frag_t
>& old_frags
)
11555 dout(10) << "rollback_uncommitted_fragment: base dirfrag " << basedirfrag
11556 << " old_frags (" << old_frags
<< ")" << dendl
;
11557 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11558 if (it
!= uncommitted_fragments
.end()) {
11559 ufragment
& uf
= it
->second
;
11560 if (!uf
.old_frags
.empty()) {
11561 uf
.old_frags
.swap(old_frags
);
11562 uf
.committed
= true;
11564 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11565 uncommitted_fragments
.erase(it
);
11570 void MDCache::rollback_uncommitted_fragments()
11572 dout(10) << "rollback_uncommitted_fragments: " << uncommitted_fragments
.size() << " pending" << dendl
;
11573 for (map
<dirfrag_t
, ufragment
>::iterator p
= uncommitted_fragments
.begin();
11574 p
!= uncommitted_fragments
.end();
11576 ufragment
&uf
= p
->second
;
11577 CInode
*diri
= get_inode(p
->first
.ino
);
11580 if (uf
.committed
) {
11582 diri
->get_dirfrags_under(p
->first
.frag
, frags
);
11583 for (list
<CDir
*>::iterator q
= frags
.begin(); q
!= frags
.end(); ++q
) {
11585 dir
->auth_pin(this);
11586 dir
->state_set(CDir::STATE_FRAGMENTING
);
11588 _fragment_committed(p
->first
, frags
);
11592 dout(10) << " rolling back " << p
->first
<< " refragment by " << uf
.bits
<< " bits" << dendl
;
11594 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
11595 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_ROLLBACK
, p
->first
, uf
.bits
);
11596 mds
->mdlog
->start_entry(le
);
11597 bool diri_auth
= (diri
->authority() != CDIR_AUTH_UNDEF
);
11599 list
<frag_t
> old_frags
;
11600 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, old_frags
);
11602 list
<CDir
*> resultfrags
;
11603 if (uf
.old_frags
.empty()) {
11604 // created by old format EFragment
11605 list
<MDSInternalContextBase
*> waiters
;
11606 adjust_dir_fragments(diri
, p
->first
.frag
, -uf
.bits
, resultfrags
, waiters
, true);
11608 bufferlist::iterator bp
= uf
.rollback
.begin();
11609 for (list
<frag_t
>::iterator q
= uf
.old_frags
.begin(); q
!= uf
.old_frags
.end(); ++q
) {
11610 CDir
*dir
= force_dir_fragment(diri
, *q
);
11611 resultfrags
.push_back(dir
);
11613 dirfrag_rollback rollback
;
11614 ::decode(rollback
, bp
);
11616 dir
->set_version(rollback
.fnode
.version
);
11617 dir
->fnode
= rollback
.fnode
;
11619 dir
->_mark_dirty(ls
);
11621 if (!(dir
->fnode
.rstat
== dir
->fnode
.accounted_rstat
)) {
11622 dout(10) << " dirty nestinfo on " << *dir
<< dendl
;
11623 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->nestlock
);
11624 ls
->dirty_dirfrag_nest
.push_back(&dir
->inode
->item_dirty_dirfrag_nest
);
11626 if (!(dir
->fnode
.fragstat
== dir
->fnode
.accounted_fragstat
)) {
11627 dout(10) << " dirty fragstat on " << *dir
<< dendl
;
11628 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->filelock
);
11629 ls
->dirty_dirfrag_dir
.push_back(&dir
->inode
->item_dirty_dirfrag_dir
);
11632 le
->add_orig_frag(dir
->get_frag());
11633 le
->metablob
.add_dir_context(dir
);
11635 le
->metablob
.add_fragmented_dir(dir
, true, false);
11637 dout(10) << " dirty dirfragtree on " << *dir
<< dendl
;
11638 dir
->state_set(CDir::STATE_DIRTYDFT
);
11639 le
->metablob
.add_fragmented_dir(dir
, true, true);
11645 diri
->project_inode()->version
= diri
->pre_dirty();
11646 diri
->pop_and_dirty_projected_inode(ls
); // hacky
11647 le
->metablob
.add_primary_dentry(diri
->get_projected_parent_dn(), diri
, true);
11649 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11650 ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11653 if (g_conf
->mds_debug_frag
)
11654 diri
->verify_dirfrags();
11656 for (list
<frag_t
>::iterator q
= old_frags
.begin(); q
!= old_frags
.end(); ++q
)
11657 assert(!diri
->dirfragtree
.is_leaf(*q
));
11659 for (list
<CDir
*>::iterator q
= resultfrags
.begin(); q
!= resultfrags
.end(); ++q
) {
11661 dir
->auth_pin(this);
11662 dir
->state_set(CDir::STATE_FRAGMENTING
);
11665 mds
->mdlog
->submit_entry(le
);
11667 uf
.old_frags
.swap(old_frags
);
11668 _fragment_committed(p
->first
, resultfrags
);
11672 void MDCache::force_readonly()
11677 dout(1) << "force file system read-only" << dendl
;
11678 mds
->clog
->warn() << "force file system read-only";
11682 mds
->server
->force_clients_readonly();
11684 // revoke write caps
11685 for (auto p
: inode_map
) {
11686 CInode
*in
= p
.second
;
11688 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
);
11691 mds
->mdlog
->flush();
11695 // ==============================================================
11698 void MDCache::show_subtrees(int dbl
)
11700 if (g_conf
->mds_thrash_exports
)
11703 //dout(10) << "show_subtrees" << dendl;
11705 if (!g_conf
->subsys
.should_gather(ceph_subsys_mds
, dbl
))
11706 return; // i won't print anything.
11708 if (subtrees
.empty()) {
11709 dout(dbl
) << "show_subtrees - no subtrees" << dendl
;
11714 list
<CDir
*> basefrags
;
11715 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
11716 p
!= base_inodes
.end();
11718 (*p
)->get_dirfrags(basefrags
);
11719 //dout(15) << "show_subtrees, base dirfrags " << basefrags << dendl;
11720 dout(15) << "show_subtrees" << dendl
;
11723 list
<pair
<CDir
*,int> > q
;
11728 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11729 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11731 set
<CDir
*> subtrees_seen
;
11734 while (!q
.empty()) {
11735 CDir
*dir
= q
.front().first
;
11736 int d
= q
.front().second
;
11739 if (subtrees
.count(dir
) == 0) continue;
11741 subtrees_seen
.insert(dir
);
11743 if (d
> depth
) depth
= d
;
11746 //dout(25) << "saw depth " << d << " " << *dir << dendl;
11747 if (seen
.count(dir
)) dout(0) << "aah, already seen " << *dir
<< dendl
;
11748 assert(seen
.count(dir
) == 0);
11752 if (!subtrees
[dir
].empty()) {
11753 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11754 p
!= subtrees
[dir
].end();
11756 //dout(25) << " saw sub " << **p << dendl;
11757 q
.push_front(pair
<CDir
*,int>(*p
, d
+1));
11764 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11765 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11767 while (!q
.empty()) {
11768 CDir
*dir
= q
.front().first
;
11769 int d
= q
.front().second
;
11772 if (subtrees
.count(dir
) == 0) continue;
11775 while ((unsigned)d
< indent
.size())
11779 string pad
= "______________________________________";
11780 pad
.resize(depth
*2+1-indent
.size());
11781 if (!subtrees
[dir
].empty())
11782 pad
[0] = '.'; // parent
11786 if (dir
->is_auth())
11792 if (dir
->get_dir_auth().second
== CDIR_AUTH_UNKNOWN
)
11793 snprintf(s
, sizeof(s
), "%2d ", int(dir
->get_dir_auth().first
));
11795 snprintf(s
, sizeof(s
), "%2d,%2d", int(dir
->get_dir_auth().first
), int(dir
->get_dir_auth().second
));
11798 dout(dbl
) << indent
<< "|_" << pad
<< s
<< " " << auth
<< *dir
<< dendl
;
11800 if (dir
->ino() == MDS_INO_ROOT
)
11801 assert(dir
->inode
== root
);
11802 if (dir
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
11803 assert(dir
->inode
== myin
);
11804 if (dir
->inode
->is_stray() && (MDS_INO_STRAY_OWNER(dir
->ino()) == mds
->get_nodeid()))
11805 assert(strays
[MDS_INO_STRAY_INDEX(dir
->ino())] == dir
->inode
);
11808 if (!subtrees
[dir
].empty()) {
11809 // more at my level?
11810 if (!q
.empty() && q
.front().second
== d
)
11815 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11816 p
!= subtrees
[dir
].end();
11818 q
.push_front(pair
<CDir
*,int>(*p
, d
+2));
11822 // verify there isn't stray crap in subtree map
11824 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
11825 p
!= subtrees
.end();
11827 if (subtrees_seen
.count(p
->first
)) continue;
11828 dout(10) << "*** stray/lost entry in subtree map: " << *p
->first
<< dendl
;
11834 void MDCache::show_cache()
11836 dout(7) << "show_cache" << dendl
;
11838 auto show_func
= [this](CInode
*in
) {
11841 dout(7) << " unlinked " << *in
<< dendl
;
11845 in
->get_dirfrags(dfs
);
11846 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11848 dout(7) << " dirfrag " << *dir
<< dendl
;
11850 for (CDir::map_t::iterator p
= dir
->items
.begin();
11851 p
!= dir
->items
.end();
11853 CDentry
*dn
= p
->second
;
11854 dout(7) << " dentry " << *dn
<< dendl
;
11855 CDentry::linkage_t
*dnl
= dn
->get_linkage();
11856 if (dnl
->is_primary() && dnl
->get_inode())
11857 dout(7) << " inode " << *dnl
->get_inode() << dendl
;
11862 for (auto p
: inode_map
)
11863 show_func(p
.second
);
11864 for (auto p
: snap_inode_map
)
11865 show_func(p
.second
);
11868 int MDCache::cache_status(Formatter
*f
)
11870 f
->open_object_section("cache");
11872 f
->open_object_section("pool");
11873 mempool::get_pool(mempool::mds_co::id
).dump(f
);
11874 f
->close_section();
11876 f
->close_section();
11880 int MDCache::dump_cache(std::string
const &file_name
)
11882 return dump_cache(file_name
.c_str(), NULL
);
11885 int MDCache::dump_cache(Formatter
*f
)
11887 return dump_cache(NULL
, f
);
11890 int MDCache::dump_cache(const string
& dump_root
, int depth
, Formatter
*f
)
11892 return dump_cache(NULL
, f
, dump_root
, depth
);
11896 * Dump the metadata cache, either to a Formatter, if
11897 * provided, else to a plain text file.
11899 int MDCache::dump_cache(const char *fn
, Formatter
*f
,
11900 const string
& dump_root
, int depth
)
11906 f
->open_array_section("inodes");
11910 snprintf(deffn
, sizeof(deffn
), "cachedump.%d.mds%d", (int)mds
->mdsmap
->get_epoch(), int(mds
->get_nodeid()));
11914 dout(1) << "dump_cache to " << fn
<< dendl
;
11916 fd
= ::open(fn
, O_WRONLY
|O_CREAT
|O_EXCL
, 0600);
11918 derr
<< "failed to open " << fn
<< ": " << cpp_strerror(errno
) << dendl
;
11923 auto dump_func
= [this, fd
, f
, depth
, &dump_root
](CInode
*in
) {
11925 if (!dump_root
.empty()) {
11930 in
->make_path_string(ipath
);
11932 if (dump_root
.length() > ipath
.length() ||
11933 !equal(dump_root
.begin(), dump_root
.end(), ipath
.begin()))
11937 count(ipath
.begin() + dump_root
.length(), ipath
.end(), '/') > depth
)
11942 f
->open_object_section("inode");
11946 ss
<< *in
<< std::endl
;
11947 std::string s
= ss
.str();
11948 r
= safe_write(fd
, s
.c_str(), s
.length());
11954 in
->get_dirfrags(dfs
);
11956 f
->open_array_section("dirfrags");
11958 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11961 f
->open_object_section("dir");
11965 tt
<< " " << *dir
<< std::endl
;
11966 string t
= tt
.str();
11967 r
= safe_write(fd
, t
.c_str(), t
.length());
11973 f
->open_array_section("dentries");
11975 for (CDir::map_t::iterator q
= dir
->items
.begin();
11976 q
!= dir
->items
.end();
11978 CDentry
*dn
= q
->second
;
11980 f
->open_object_section("dentry");
11982 f
->close_section();
11985 uu
<< " " << *dn
<< std::endl
;
11986 string u
= uu
.str();
11987 r
= safe_write(fd
, u
.c_str(), u
.length());
11993 f
->close_section(); //dentries
11995 dir
->check_rstats();
11997 f
->close_section(); //dir
12001 f
->close_section(); // dirfrags
12005 f
->close_section(); // inode
12010 for (auto p
: inode_map
) {
12011 r
= dump_func(p
.second
);
12015 for (auto p
: snap_inode_map
) {
12016 r
= dump_func(p
.second
);
12024 f
->close_section(); // inodes
12033 C_MDS_RetryRequest::C_MDS_RetryRequest(MDCache
*c
, MDRequestRef
& r
)
12034 : MDSInternalContext(c
->mds
), cache(c
), mdr(r
)
12037 void C_MDS_RetryRequest::finish(int r
)
12040 cache
->dispatch_request(mdr
);
12044 class C_MDS_EnqueueScrub
: public Context
12046 Formatter
*formatter
;
12047 Context
*on_finish
;
12049 ScrubHeaderRef header
;
12050 C_MDS_EnqueueScrub(Formatter
*f
, Context
*fin
) :
12051 formatter(f
), on_finish(fin
), header(nullptr) {}
12053 Context
*take_finisher() {
12054 Context
*fin
= on_finish
;
12059 void finish(int r
) override
{
12060 if (r
< 0) { // we failed the lookup or something; dump ourselves
12061 formatter
->open_object_section("results");
12062 formatter
->dump_int("return_code", r
);
12063 formatter
->close_section(); // results
12066 on_finish
->complete(r
);
12070 void MDCache::enqueue_scrub(
12071 const string
& path
,
12072 const std::string
&tag
,
12073 bool force
, bool recursive
, bool repair
,
12074 Formatter
*f
, Context
*fin
)
12076 dout(10) << __func__
<< path
<< dendl
;
12077 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_ENQUEUE_SCRUB
);
12078 filepath
fp(path
.c_str());
12079 mdr
->set_filepath(fp
);
12081 C_MDS_EnqueueScrub
*cs
= new C_MDS_EnqueueScrub(f
, fin
);
12082 cs
->header
= std::make_shared
<ScrubHeader
>(
12083 tag
, force
, recursive
, repair
, f
);
12085 mdr
->internal_op_finish
= cs
;
12086 enqueue_scrub_work(mdr
);
12089 void MDCache::enqueue_scrub_work(MDRequestRef
& mdr
)
12091 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12092 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
12096 // TODO: Remove this restriction
12097 assert(in
->is_auth());
12099 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
12103 C_MDS_EnqueueScrub
*cs
= static_cast<C_MDS_EnqueueScrub
*>(mdr
->internal_op_finish
);
12104 ScrubHeaderRef
&header
= cs
->header
;
12106 // Cannot scrub same dentry twice at same time
12107 if (in
->scrub_infop
&& in
->scrub_infop
->scrub_in_progress
) {
12108 mds
->server
->respond_to_request(mdr
, -EBUSY
);
12114 header
->set_origin(in
);
12116 Context
*fin
= nullptr;
12117 if (!header
->get_recursive()) {
12118 fin
= cs
->take_finisher();
12121 // If the scrub did some repair, then flush the journal at the end of
12122 // the scrub. Otherwise in the case of e.g. rewriting a backtrace
12123 // the on disk state will still look damaged.
12124 auto expiry_fin
= new FunctionContext([this, header
, fin
](int r
){
12125 if (header
->get_repaired()) {
12126 dout(4) << "Flushing journal because scrub did some repairs" << dendl
;
12127 mds
->mdlog
->start_new_segment();
12128 mds
->mdlog
->trim_all();
12130 MDSGatherBuilder
expiry_gather(g_ceph_context
);
12131 const std::set
<LogSegment
*> &expiring_segments
= mds
->mdlog
->get_expiring_segments();
12132 for (std::set
<LogSegment
*>::const_iterator i
= expiring_segments
.begin();
12133 i
!= expiring_segments
.end(); ++i
) {
12134 (*i
)->wait_for_expiry(expiry_gather
.new_sub());
12136 expiry_gather
.set_finisher(new MDSInternalContextWrapper(mds
, fin
));
12137 expiry_gather
.activate();
12146 if (!header
->get_recursive()) {
12147 mds
->scrubstack
->enqueue_inode_top(in
, header
,
12148 new MDSInternalContextWrapper(mds
,
12151 mds
->scrubstack
->enqueue_inode_bottom(in
, header
,
12152 new MDSInternalContextWrapper(mds
,
12156 mds
->server
->respond_to_request(mdr
, 0);
12160 struct C_MDC_RepairDirfragStats
: public MDCacheLogContext
{
12162 C_MDC_RepairDirfragStats(MDCache
*c
, MDRequestRef
& m
) :
12163 MDCacheLogContext(c
), mdr(m
) {}
12164 void finish(int r
) override
{
12166 get_mds()->server
->respond_to_request(mdr
, r
);
12170 void MDCache::repair_dirfrag_stats(CDir
*dir
)
12172 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_FRAGSTATS
);
12174 mdr
->internal_op_private
= dir
;
12175 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12176 repair_dirfrag_stats_work(mdr
);
12179 void MDCache::repair_dirfrag_stats_work(MDRequestRef
& mdr
)
12181 CDir
*dir
= static_cast<CDir
*>(mdr
->internal_op_private
);
12182 dout(10) << __func__
<< " " << *dir
<< dendl
;
12184 if (!dir
->is_auth()) {
12185 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12189 if (!mdr
->is_auth_pinned(dir
) && !dir
->can_auth_pin()) {
12190 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(this, mdr
));
12192 mds
->locker
->drop_locks(mdr
.get());
12193 mdr
->drop_local_auth_pins();
12194 if (!mdr
->remote_auth_pins
.empty())
12195 mds
->locker
->notify_freeze_waiter(dir
);
12199 mdr
->auth_pin(dir
);
12201 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12202 CInode
*diri
= dir
->inode
;
12203 rdlocks
.insert(&diri
->dirfragtreelock
);
12204 wrlocks
.insert(&diri
->nestlock
);
12205 wrlocks
.insert(&diri
->filelock
);
12206 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12209 if (!dir
->is_complete()) {
12210 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12214 frag_info_t frag_info
;
12215 nest_info_t nest_info
;
12216 for (CDir::map_t::iterator it
= dir
->begin(); it
!= dir
->end(); ++it
) {
12217 CDentry
*dn
= it
->second
;
12218 if (dn
->last
!= CEPH_NOSNAP
)
12220 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
12221 if (dnl
->is_primary()) {
12222 CInode
*in
= dnl
->get_inode();
12223 nest_info
.add(in
->get_projected_inode()->accounted_rstat
);
12225 frag_info
.nsubdirs
++;
12227 frag_info
.nfiles
++;
12228 } else if (dnl
->is_remote())
12229 frag_info
.nfiles
++;
12232 fnode_t
*pf
= dir
->get_projected_fnode();
12233 bool good_fragstat
= frag_info
.same_sums(pf
->fragstat
);
12234 bool good_rstat
= nest_info
.same_sums(pf
->rstat
);
12235 if (good_fragstat
&& good_rstat
) {
12236 dout(10) << __func__
<< " no corruption found" << dendl
;
12237 mds
->server
->respond_to_request(mdr
, 0);
12241 pf
= dir
->project_fnode();
12242 pf
->version
= dir
->pre_dirty();
12243 mdr
->add_projected_fnode(dir
);
12245 mdr
->ls
= mds
->mdlog
->get_current_segment();
12246 EUpdate
*le
= new EUpdate(mds
->mdlog
, "repair_dirfrag");
12247 mds
->mdlog
->start_entry(le
);
12249 if (!good_fragstat
) {
12250 if (pf
->fragstat
.mtime
> frag_info
.mtime
)
12251 frag_info
.mtime
= pf
->fragstat
.mtime
;
12252 if (pf
->fragstat
.change_attr
> frag_info
.change_attr
)
12253 frag_info
.change_attr
= pf
->fragstat
.change_attr
;
12254 pf
->fragstat
= frag_info
;
12255 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12256 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12257 mdr
->add_updated_lock(&diri
->filelock
);
12261 if (pf
->rstat
.rctime
> nest_info
.rctime
)
12262 nest_info
.rctime
= pf
->rstat
.rctime
;
12263 pf
->rstat
= nest_info
;
12264 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12265 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12266 mdr
->add_updated_lock(&diri
->nestlock
);
12269 le
->metablob
.add_dir_context(dir
);
12270 le
->metablob
.add_dir(dir
, true);
12272 mds
->mdlog
->submit_entry(le
, new C_MDC_RepairDirfragStats(this, mdr
));
12275 void MDCache::repair_inode_stats(CInode
*diri
)
12277 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_INODESTATS
);
12279 mdr
->internal_op_private
= diri
;
12280 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12281 repair_inode_stats_work(mdr
);
12284 void MDCache::repair_inode_stats_work(MDRequestRef
& mdr
)
12286 CInode
*diri
= static_cast<CInode
*>(mdr
->internal_op_private
);
12287 dout(10) << __func__
<< " " << *diri
<< dendl
;
12289 if (!diri
->is_auth()) {
12290 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12293 if (!diri
->is_dir()) {
12294 mds
->server
->respond_to_request(mdr
, -ENOTDIR
);
12298 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12299 std::list
<frag_t
> frags
;
12301 if (mdr
->ls
) // already marked filelock/nestlock dirty ?
12304 rdlocks
.insert(&diri
->dirfragtreelock
);
12305 wrlocks
.insert(&diri
->nestlock
);
12306 wrlocks
.insert(&diri
->filelock
);
12307 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12310 // Fetch all dirfrags and mark filelock/nestlock dirty. This will tirgger
12311 // the scatter-gather process, which will fix any fragstat/rstat errors.
12312 diri
->dirfragtree
.get_leaves(frags
);
12313 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12314 CDir
*dir
= diri
->get_dirfrag(*p
);
12316 assert(mdr
->is_auth_pinned(diri
));
12317 dir
= diri
->get_or_open_dirfrag(this, *p
);
12319 if (dir
->get_version() == 0) {
12320 assert(dir
->is_auth());
12321 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12326 diri
->state_set(CInode::STATE_REPAIRSTATS
);
12327 mdr
->ls
= mds
->mdlog
->get_current_segment();
12328 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12329 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12330 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12331 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12333 mds
->locker
->drop_locks(mdr
.get());
12336 // force the scatter-gather process
12337 rdlocks
.insert(&diri
->dirfragtreelock
);
12338 rdlocks
.insert(&diri
->nestlock
);
12339 rdlocks
.insert(&diri
->filelock
);
12341 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12344 diri
->state_clear(CInode::STATE_REPAIRSTATS
);
12346 frag_info_t dir_info
;
12347 nest_info_t nest_info
;
12348 nest_info
.rsubdirs
++; // it gets one to account for self
12350 diri
->dirfragtree
.get_leaves(frags
);
12351 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12352 CDir
*dir
= diri
->get_dirfrag(*p
);
12354 assert(dir
->get_version() > 0);
12355 dir_info
.add(dir
->fnode
.accounted_fragstat
);
12356 nest_info
.add(dir
->fnode
.accounted_rstat
);
12359 if (!dir_info
.same_sums(diri
->inode
.dirstat
) ||
12360 !nest_info
.same_sums(diri
->inode
.rstat
)) {
12361 dout(10) << __func__
<< " failed to fix fragstat/rstat on "
12365 mds
->server
->respond_to_request(mdr
, 0);
12368 void MDCache::flush_dentry(const string
& path
, Context
*fin
)
12370 if (is_readonly()) {
12371 dout(10) << __func__
<< ": read-only FS" << dendl
;
12372 fin
->complete(-EROFS
);
12375 dout(10) << "flush_dentry " << path
<< dendl
;
12376 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FLUSH
);
12377 filepath
fp(path
.c_str());
12378 mdr
->set_filepath(fp
);
12379 mdr
->internal_op_finish
= fin
;
12380 flush_dentry_work(mdr
);
12383 class C_FinishIOMDR
: public MDSInternalContextBase
{
12387 MDSRank
*get_mds() override
{ return mds
; }
12389 C_FinishIOMDR(MDSRank
*mds_
, MDRequestRef
& mdr_
) : mds(mds_
), mdr(mdr_
) {}
12390 void finish(int r
) override
{ mds
->server
->respond_to_request(mdr
, r
); }
12393 void MDCache::flush_dentry_work(MDRequestRef
& mdr
)
12395 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12396 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
12400 // TODO: Is this necessary? Fix it if so
12401 assert(in
->is_auth());
12402 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
12405 in
->flush(new C_FinishIOMDR(mds
, mdr
));
12410 * Initialize performance counters with global perfcounter
12413 void MDCache::register_perfcounters()
12415 PerfCountersBuilder
pcb(g_ceph_context
,
12416 "mds_cache", l_mdc_first
, l_mdc_last
);
12418 /* Stray/purge statistics */
12419 pcb
.add_u64(l_mdc_num_strays
, "num_strays",
12420 "Stray dentries", "stry", PerfCountersBuilder::PRIO_INTERESTING
);
12421 pcb
.add_u64(l_mdc_num_strays_delayed
, "num_strays_delayed", "Stray dentries delayed");
12422 pcb
.add_u64(l_mdc_num_strays_enqueuing
, "num_strays_enqueuing", "Stray dentries enqueuing for purge");
12424 pcb
.add_u64_counter(l_mdc_strays_created
, "strays_created", "Stray dentries created");
12425 pcb
.add_u64_counter(l_mdc_strays_enqueued
, "strays_enqueued",
12426 "Stray dentries enqueued for purge");
12427 pcb
.add_u64_counter(l_mdc_strays_reintegrated
, "strays_reintegrated", "Stray dentries reintegrated");
12428 pcb
.add_u64_counter(l_mdc_strays_migrated
, "strays_migrated", "Stray dentries migrated");
12431 /* Recovery queue statistics */
12432 pcb
.add_u64(l_mdc_num_recovering_processing
, "num_recovering_processing", "Files currently being recovered");
12433 pcb
.add_u64(l_mdc_num_recovering_enqueued
, "num_recovering_enqueued",
12434 "Files waiting for recovery", "recy", PerfCountersBuilder::PRIO_INTERESTING
);
12435 pcb
.add_u64(l_mdc_num_recovering_prioritized
, "num_recovering_prioritized", "Files waiting for recovery with elevated priority");
12436 pcb
.add_u64_counter(l_mdc_recovery_started
, "recovery_started", "File recoveries started");
12437 pcb
.add_u64_counter(l_mdc_recovery_completed
, "recovery_completed",
12438 "File recoveries completed", "recd", PerfCountersBuilder::PRIO_INTERESTING
);
12440 pcb
.add_u64_counter(l_mdss_ireq_enqueue_scrub
, "ireq_enqueue_scrub",
12441 "Internal Request type enqueue scrub");
12442 pcb
.add_u64_counter(l_mdss_ireq_exportdir
, "ireq_exportdir",
12443 "Internal Request type export dir");
12444 pcb
.add_u64_counter(l_mdss_ireq_flush
, "ireq_flush",
12445 "Internal Request type flush");
12446 pcb
.add_u64_counter(l_mdss_ireq_fragmentdir
, "ireq_fragmentdir",
12447 "Internal Request type fragmentdir");
12448 pcb
.add_u64_counter(l_mdss_ireq_fragstats
, "ireq_fragstats",
12449 "Internal Request type frag stats");
12450 pcb
.add_u64_counter(l_mdss_ireq_inodestats
, "ireq_inodestats",
12451 "Internal Request type inode stats");
12453 logger
.reset(pcb
.create_perf_counters());
12454 g_ceph_context
->get_perfcounters_collection()->add(logger
.get());
12455 recovery_queue
.set_logger(logger
.get());
12456 stray_manager
.set_logger(logger
.get());
12459 void MDCache::activate_stray_manager()
12462 stray_manager
.activate();
12465 new MDSInternalContextWrapper(mds
,
12466 new FunctionContext([this](int r
){
12467 stray_manager
.activate();
12475 * Call this when putting references to an inode/dentry or
12476 * when attempting to trim it.
12478 * If this inode is no longer linked by anyone, and this MDS
12479 * rank holds the primary dentry, and that dentry is in a stray
12480 * directory, then give up the dentry to the StrayManager, never
12481 * to be seen again by MDCache.
12483 * @param delay if true, then purgeable inodes are stashed til
12484 * the next trim(), rather than being purged right
12487 void MDCache::maybe_eval_stray(CInode
*in
, bool delay
) {
12488 if (in
->inode
.nlink
> 0 || in
->is_base() || is_readonly() ||
12489 mds
->get_state() <= MDSMap::STATE_REJOIN
)
12492 CDentry
*dn
= in
->get_projected_parent_dn();
12494 if (dn
->state_test(CDentry::STATE_PURGING
)) {
12495 /* We have already entered the purging process, no need
12496 * to re-evaluate me ! */
12500 if (dn
->get_projected_linkage()->is_primary() &&
12501 dn
->get_dir()->get_inode()->is_stray()) {
12502 stray_manager
.eval_stray(dn
, delay
);
12506 void MDCache::clear_dirty_bits_for_stray(CInode
* diri
) {
12507 dout(10) << __func__
<< " " << *diri
<< dendl
;
12508 assert(diri
->get_projected_parent_dir()->inode
->is_stray());
12510 diri
->get_dirfrags(ls
);
12511 for (auto p
: ls
) {
12512 if (p
->is_auth() && !(p
->is_frozen() || p
->is_freezing()))
12513 p
->try_remove_dentries_for_stray();
12515 if (!diri
->snaprealm
) {
12516 if (diri
->is_auth())
12517 diri
->clear_dirty_rstat();
12518 diri
->clear_scatter_dirty();