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"
43 #include "msg/Message.h"
44 #include "msg/Messenger.h"
46 #include "common/errno.h"
47 #include "common/safe_io.h"
48 #include "common/perf_counters.h"
49 #include "common/MemoryModel.h"
50 #include "osdc/Journaler.h"
51 #include "osdc/Filer.h"
53 #include "events/ESubtreeMap.h"
54 #include "events/EUpdate.h"
55 #include "events/ESlaveUpdate.h"
56 #include "events/EImportFinish.h"
57 #include "events/EFragment.h"
58 #include "events/ECommitted.h"
59 #include "events/ESessions.h"
61 #include "messages/MGenericMessage.h"
63 #include "messages/MMDSResolve.h"
64 #include "messages/MMDSResolveAck.h"
65 #include "messages/MMDSCacheRejoin.h"
67 #include "messages/MDiscover.h"
68 #include "messages/MDiscoverReply.h"
70 //#include "messages/MInodeUpdate.h"
71 #include "messages/MDirUpdate.h"
72 #include "messages/MCacheExpire.h"
74 #include "messages/MInodeFileCaps.h"
76 #include "messages/MLock.h"
77 #include "messages/MDentryLink.h"
78 #include "messages/MDentryUnlink.h"
80 #include "messages/MMDSFindIno.h"
81 #include "messages/MMDSFindInoReply.h"
83 #include "messages/MMDSOpenIno.h"
84 #include "messages/MMDSOpenInoReply.h"
86 #include "messages/MClientRequest.h"
87 #include "messages/MClientCaps.h"
88 #include "messages/MClientSnap.h"
89 #include "messages/MClientQuota.h"
91 #include "messages/MMDSSlaveRequest.h"
93 #include "messages/MMDSFragmentNotify.h"
95 #include "messages/MGatherCaps.h"
99 #include "common/Timer.h"
101 #include "perfglue/heap_profiler.h"
105 #include "common/config.h"
106 #include "include/assert.h"
108 #define dout_context g_ceph_context
109 #define dout_subsys ceph_subsys_mds
111 #define dout_prefix _prefix(_dout, mds)
112 static ostream
& _prefix(std::ostream
*_dout
, MDSRank
*mds
) {
113 return *_dout
<< "mds." << mds
->get_nodeid() << ".cache ";
116 set
<int> SimpleLock::empty_gather_set
;
120 * All non-I/O contexts that require a reference
121 * to an MDCache instance descend from this.
123 class MDCacheContext
: public virtual MDSInternalContextBase
{
126 MDSRank
*get_mds() override
128 assert(mdcache
!= NULL
);
132 explicit MDCacheContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
137 * Only for contexts called back from an I/O completion
139 * Note: duplication of members wrt MDCacheContext, because
140 * it'ls the lesser of two evils compared with introducing
141 * yet another piece of (multiple) inheritance.
143 class MDCacheIOContext
: public virtual MDSIOContextBase
{
146 MDSRank
*get_mds() override
148 assert(mdcache
!= NULL
);
152 explicit MDCacheIOContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
155 class MDCacheLogContext
: public virtual MDSLogContextBase
{
158 MDSRank
*get_mds() override
160 assert(mdcache
!= NULL
);
164 explicit MDCacheLogContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
167 MDCache::MDCache(MDSRank
*m
, PurgeQueue
&purge_queue_
) :
169 filer(m
->objecter
, m
->finisher
),
170 exceeded_size_limit(false),
172 stray_manager(m
, purge_queue_
)
174 migrator
.reset(new Migrator(mds
, this));
180 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
184 num_inodes_with_caps
= 0;
186 max_dir_commit_size
= g_conf
->mds_dir_max_commit_size
?
187 (g_conf
->mds_dir_max_commit_size
<< 20) :
188 (0.9 *(g_conf
->osd_max_write_size
<< 20));
190 discover_last_tid
= 0;
191 open_ino_last_tid
= 0;
192 find_ino_peer_last_tid
= 0;
196 client_lease_durations
[0] = 5.0;
197 client_lease_durations
[1] = 30.0;
198 client_lease_durations
[2] = 300.0;
200 resolves_pending
= false;
201 rejoins_pending
= false;
202 cap_imports_num_opening
= 0;
204 opening_root
= open
= false;
205 lru
.lru_set_max(g_conf
->mds_cache_size
);
206 lru
.lru_set_midpoint(g_conf
->mds_cache_mid
);
208 bottom_lru
.lru_set_max(0);
209 bottom_lru
.lru_set_midpoint(0);
211 decayrate
.set_halflife(g_conf
->mds_decay_halflife
);
213 did_shutdown_log_cap
= false;
219 g_ceph_context
->get_perfcounters_collection()->remove(logger
.get());
225 void MDCache::log_stat()
227 mds
->logger
->set(l_mds_inode_max
, g_conf
->mds_cache_size
);
228 mds
->logger
->set(l_mds_inodes
, lru
.lru_get_size());
229 mds
->logger
->set(l_mds_inodes_pinned
, lru
.lru_get_num_pinned());
230 mds
->logger
->set(l_mds_inodes_top
, lru
.lru_get_top());
231 mds
->logger
->set(l_mds_inodes_bottom
, lru
.lru_get_bot());
232 mds
->logger
->set(l_mds_inodes_pin_tail
, lru
.lru_get_pintail());
233 mds
->logger
->set(l_mds_inodes_with_caps
, num_inodes_with_caps
);
234 mds
->logger
->set(l_mds_caps
, Capability::count());
240 bool MDCache::shutdown()
242 if (lru
.lru_get_size() > 0) {
243 dout(7) << "WARNING: mdcache shutdown with non-empty cache" << dendl
;
252 // ====================================================================
253 // some inode functions
255 void MDCache::add_inode(CInode
*in
)
257 // add to lru, inode map
258 assert(inode_map
.count(in
->vino()) == 0); // should be no dup inos!
259 inode_map
[ in
->vino() ] = in
;
261 if (in
->ino() < MDS_INO_SYSTEM_BASE
) {
262 if (in
->ino() == MDS_INO_ROOT
)
264 else if (in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
266 else if (in
->is_stray()) {
267 if (MDS_INO_STRAY_OWNER(in
->ino()) == mds
->get_nodeid()) {
268 strays
[MDS_INO_STRAY_INDEX(in
->ino())] = in
;
272 base_inodes
.insert(in
);
275 if (CInode::count() >
276 g_conf
->mds_cache_size
* g_conf
->mds_health_cache_threshold
) {
277 exceeded_size_limit
= true;
281 void MDCache::remove_inode(CInode
*o
)
283 dout(14) << "remove_inode " << *o
<< dendl
;
285 if (o
->get_parent_dn()) {
286 // FIXME: multiple parents?
287 CDentry
*dn
= o
->get_parent_dn();
288 assert(!dn
->is_dirty());
289 dn
->dir
->unlink_inode(dn
); // leave dentry ... FIXME?
294 if (o
->is_dirty_parent())
295 o
->clear_dirty_parent();
297 o
->clear_scatter_dirty();
299 o
->item_open_file
.remove_myself();
301 if (o
->state_test(CInode::STATE_QUEUEDEXPORTPIN
))
302 export_pin_queue
.erase(o
);
304 // remove from inode map
305 inode_map
.erase(o
->vino());
307 if (o
->ino() < MDS_INO_SYSTEM_BASE
) {
308 if (o
== root
) root
= 0;
309 if (o
== myin
) myin
= 0;
311 if (MDS_INO_STRAY_OWNER(o
->ino()) == mds
->get_nodeid()) {
312 strays
[MDS_INO_STRAY_INDEX(o
->ino())] = 0;
316 base_inodes
.erase(o
);
320 assert(o
->get_num_ref() == 0);
324 file_layout_t
MDCache::gen_default_file_layout(const MDSMap
&mdsmap
)
326 file_layout_t result
= file_layout_t::get_default();
327 result
.pool_id
= mdsmap
.get_first_data_pool();
331 file_layout_t
MDCache::gen_default_log_layout(const MDSMap
&mdsmap
)
333 file_layout_t result
= file_layout_t::get_default();
334 result
.pool_id
= mdsmap
.get_metadata_pool();
335 if (g_conf
->mds_log_segment_size
> 0) {
336 result
.object_size
= g_conf
->mds_log_segment_size
;
337 result
.stripe_unit
= g_conf
->mds_log_segment_size
;
342 void MDCache::init_layouts()
344 default_file_layout
= gen_default_file_layout(*(mds
->mdsmap
));
345 default_log_layout
= gen_default_log_layout(*(mds
->mdsmap
));
348 void MDCache::create_unlinked_system_inode(CInode
*in
, inodeno_t ino
,
352 in
->inode
.version
= 1;
353 in
->inode
.xattr_version
= 1;
354 in
->inode
.mode
= 0500 | mode
;
358 in
->inode
.btime
= ceph_clock_now();
360 in
->inode
.truncate_size
= -1ull;
361 in
->inode
.change_attr
= 0;
362 in
->inode
.export_pin
= MDS_RANK_NONE
;
364 memset(&in
->inode
.dir_layout
, 0, sizeof(in
->inode
.dir_layout
));
365 if (in
->inode
.is_dir()) {
366 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
367 ++in
->inode
.rstat
.rsubdirs
;
369 in
->inode
.layout
= default_file_layout
;
370 ++in
->inode
.rstat
.rfiles
;
372 in
->inode
.accounted_rstat
= in
->inode
.rstat
;
376 in
->inode_auth
= mds_authority_t(mds
->get_nodeid(), CDIR_AUTH_UNKNOWN
);
378 in
->inode_auth
= mds_authority_t(mds_rank_t(in
->ino() - MDS_INO_MDSDIR_OFFSET
), CDIR_AUTH_UNKNOWN
);
379 in
->open_snaprealm(); // empty snaprealm
380 assert(!in
->snaprealm
->parent
); // created its own
381 in
->snaprealm
->srnode
.seq
= 1;
385 CInode
*MDCache::create_system_inode(inodeno_t ino
, int mode
)
387 dout(0) << "creating system inode with ino:" << ino
<< dendl
;
388 CInode
*in
= new CInode(this);
389 create_unlinked_system_inode(in
, ino
, mode
);
394 CInode
*MDCache::create_root_inode()
396 CInode
*i
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755);
397 i
->inode
.uid
= g_conf
->mds_root_ino_uid
;
398 i
->inode
.gid
= g_conf
->mds_root_ino_gid
;
399 i
->inode
.layout
= default_file_layout
;
400 i
->inode
.layout
.pool_id
= mds
->mdsmap
->get_first_data_pool();
404 void MDCache::create_empty_hierarchy(MDSGather
*gather
)
407 CInode
*root
= create_root_inode();
409 // force empty root dir
410 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
411 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
412 rootdir
->dir_rep
= CDir::REP_ALL
; //NONE;
414 rootdir
->fnode
.accounted_fragstat
= rootdir
->fnode
.fragstat
;
415 rootdir
->fnode
.accounted_rstat
= rootdir
->fnode
.rstat
;
417 root
->inode
.dirstat
= rootdir
->fnode
.fragstat
;
418 root
->inode
.rstat
= rootdir
->fnode
.rstat
;
419 ++root
->inode
.rstat
.rsubdirs
;
420 root
->inode
.accounted_rstat
= root
->inode
.rstat
;
422 rootdir
->mark_complete();
423 rootdir
->mark_dirty(rootdir
->pre_dirty(), mds
->mdlog
->get_current_segment());
424 rootdir
->commit(0, gather
->new_sub());
426 root
->store(gather
->new_sub());
429 void MDCache::create_mydir_hierarchy(MDSGather
*gather
)
432 CInode
*my
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
);
434 CDir
*mydir
= my
->get_or_open_dirfrag(this, frag_t());
435 adjust_subtree_auth(mydir
, mds
->get_nodeid());
437 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
440 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
441 CInode
*stray
= create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
);
442 CDir
*straydir
= stray
->get_or_open_dirfrag(this, frag_t());
444 name
<< "stray" << i
;
445 CDentry
*sdn
= mydir
->add_primary_dentry(name
.str(), stray
);
446 sdn
->_mark_dirty(mds
->mdlog
->get_current_segment());
448 stray
->inode
.dirstat
= straydir
->fnode
.fragstat
;
450 mydir
->fnode
.rstat
.add(stray
->inode
.rstat
);
451 mydir
->fnode
.fragstat
.nsubdirs
++;
453 straydir
->mark_complete();
454 straydir
->mark_dirty(straydir
->pre_dirty(), ls
);
455 straydir
->commit(0, gather
->new_sub());
456 stray
->_mark_dirty_parent(ls
, true);
457 stray
->store_backtrace(gather
->new_sub());
460 mydir
->fnode
.accounted_fragstat
= mydir
->fnode
.fragstat
;
461 mydir
->fnode
.accounted_rstat
= mydir
->fnode
.rstat
;
463 myin
->inode
.dirstat
= mydir
->fnode
.fragstat
;
464 myin
->inode
.rstat
= mydir
->fnode
.rstat
;
465 ++myin
->inode
.rstat
.rsubdirs
;
466 myin
->inode
.accounted_rstat
= myin
->inode
.rstat
;
468 mydir
->mark_complete();
469 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
470 mydir
->commit(0, gather
->new_sub());
472 myin
->store(gather
->new_sub());
475 struct C_MDC_CreateSystemFile
: public MDCacheLogContext
{
479 MDSInternalContextBase
*fin
;
480 C_MDC_CreateSystemFile(MDCache
*c
, MutationRef
& mu
, CDentry
*d
, version_t v
, MDSInternalContextBase
*f
) :
481 MDCacheLogContext(c
), mut(mu
), dn(d
), dpv(v
), fin(f
) {}
482 void finish(int r
) override
{
483 mdcache
->_create_system_file_finish(mut
, dn
, dpv
, fin
);
487 void MDCache::_create_system_file(CDir
*dir
, const char *name
, CInode
*in
, MDSInternalContextBase
*fin
)
489 dout(10) << "_create_system_file " << name
<< " in " << *dir
<< dendl
;
490 CDentry
*dn
= dir
->add_null_dentry(name
);
492 dn
->push_projected_linkage(in
);
493 version_t dpv
= dn
->pre_dirty();
496 if (in
->inode
.is_dir()) {
497 in
->inode
.rstat
.rsubdirs
= 1;
499 mdir
= in
->get_or_open_dirfrag(this, frag_t());
500 mdir
->mark_complete();
503 in
->inode
.rstat
.rfiles
= 1;
504 in
->inode
.version
= dn
->pre_dirty();
506 SnapRealm
*realm
= dir
->get_inode()->find_snaprealm();
507 dn
->first
= in
->first
= realm
->get_newest_seq() + 1;
509 MutationRef
mut(new MutationImpl());
511 // force some locks. hacky.
512 mds
->locker
->wrlock_force(&dir
->inode
->filelock
, mut
);
513 mds
->locker
->wrlock_force(&dir
->inode
->nestlock
, mut
);
515 mut
->ls
= mds
->mdlog
->get_current_segment();
516 EUpdate
*le
= new EUpdate(mds
->mdlog
, "create system file");
517 mds
->mdlog
->start_entry(le
);
519 if (!in
->is_mdsdir()) {
520 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
521 le
->metablob
.add_primary_dentry(dn
, in
, true);
523 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_DIR
, 1);
524 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
525 dn
->push_projected_linkage(in
->ino(), in
->d_type());
526 le
->metablob
.add_remote_dentry(dn
, true, in
->ino(), in
->d_type());
527 le
->metablob
.add_root(true, in
);
530 le
->metablob
.add_new_dir(mdir
); // dirty AND complete AND new
532 mds
->mdlog
->submit_entry(le
, new C_MDC_CreateSystemFile(this, mut
, dn
, dpv
, fin
));
536 void MDCache::_create_system_file_finish(MutationRef
& mut
, CDentry
*dn
, version_t dpv
, MDSInternalContextBase
*fin
)
538 dout(10) << "_create_system_file_finish " << *dn
<< dendl
;
540 dn
->pop_projected_linkage();
541 dn
->mark_dirty(dpv
, mut
->ls
);
543 CInode
*in
= dn
->get_linkage()->get_inode();
545 in
->mark_dirty(in
->inode
.version
+ 1, mut
->ls
);
547 if (in
->inode
.is_dir()) {
548 CDir
*dir
= in
->get_dirfrag(frag_t());
550 dir
->mark_dirty(1, mut
->ls
);
551 dir
->mark_new(mut
->ls
);
555 mds
->locker
->drop_locks(mut
.get());
560 //if (dir && MDS_INO_IS_MDSDIR(in->ino()))
561 //migrator->export_dir(dir, (int)in->ino() - MDS_INO_MDSDIR_OFFSET);
566 struct C_MDS_RetryOpenRoot
: public MDSInternalContext
{
568 explicit C_MDS_RetryOpenRoot(MDCache
*c
) : MDSInternalContext(c
->mds
), cache(c
) {}
569 void finish(int r
) override
{
571 // If we can't open root, something disastrous has happened: mark
572 // this rank damaged for operator intervention. Note that
573 // it is not okay to call suicide() here because we are in
574 // a Finisher callback.
575 cache
->mds
->damaged();
576 ceph_abort(); // damaged should never return
583 void MDCache::open_root_inode(MDSInternalContextBase
*c
)
585 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
587 in
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755); // initially inaccurate!
590 discover_base_ino(MDS_INO_ROOT
, c
, mds
->mdsmap
->get_root());
594 void MDCache::open_mydir_inode(MDSInternalContextBase
*c
)
596 MDSGatherBuilder
gather(g_ceph_context
);
598 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
599 in
->fetch(gather
.new_sub());
601 gather
.set_finisher(c
);
605 void MDCache::open_root()
607 dout(10) << "open_root" << dendl
;
610 open_root_inode(new C_MDS_RetryOpenRoot(this));
613 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
614 assert(root
->is_auth());
615 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
617 if (!rootdir
->is_subtree_root())
618 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
619 if (!rootdir
->is_complete()) {
620 rootdir
->fetch(new C_MDS_RetryOpenRoot(this));
624 assert(!root
->is_auth());
625 CDir
*rootdir
= root
->get_dirfrag(frag_t());
627 open_remote_dirfrag(root
, frag_t(), new C_MDS_RetryOpenRoot(this));
633 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
634 in
->fetch(new C_MDS_RetryOpenRoot(this));
637 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
639 adjust_subtree_auth(mydir
, mds
->get_nodeid());
644 void MDCache::populate_mydir()
647 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
650 dout(10) << "populate_mydir " << *mydir
<< dendl
;
652 if (!mydir
->is_complete()) {
653 mydir
->fetch(new C_MDS_RetryOpenRoot(this));
657 if (mydir
->get_version() == 0 && mydir
->state_test(CDir::STATE_BADFRAG
)) {
658 // A missing dirfrag, we will recreate it. Before that, we must dirty
659 // it before dirtying any of the strays we create within it.
660 mds
->clog
->warn() << "fragment " << mydir
->dirfrag() << " was unreadable, "
662 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
663 mydir
->state_clear(CDir::STATE_BADFRAG
);
664 mydir
->mark_complete();
665 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
668 // open or create stray
669 uint64_t num_strays
= 0;
670 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
672 name
<< "stray" << i
;
673 CDentry
*straydn
= mydir
->lookup(name
.str());
675 // allow for older fs's with stray instead of stray0
676 if (straydn
== NULL
&& i
== 0)
677 straydn
= mydir
->lookup("stray");
679 if (!straydn
|| !straydn
->get_linkage()->get_inode()) {
680 _create_system_file(mydir
, name
.str().c_str(), create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
),
681 new C_MDS_RetryOpenRoot(this));
686 // we make multiple passes through this method; make sure we only pin each stray once.
687 if (!strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
688 strays
[i
]->get(CInode::PIN_STRAY
);
689 strays
[i
]->state_set(CInode::STATE_STRAYPINNED
);
690 strays
[i
]->get_stickydirs();
692 dout(20) << " stray num " << i
<< " is " << *strays
[i
] << dendl
;
696 strays
[i
]->dirfragtree
.get_leaves(ls
);
697 for (list
<frag_t
>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
699 CDir
*dir
= strays
[i
]->get_dirfrag(fg
);
701 dir
= strays
[i
]->get_or_open_dirfrag(this, fg
);
704 // DamageTable applies special handling to strays: it will
705 // have damaged() us out if one is damaged.
706 assert(!dir
->state_test(CDir::STATE_BADFRAG
));
708 if (dir
->get_version() == 0) {
709 dir
->fetch(new C_MDS_RetryOpenRoot(this));
713 if (dir
->get_frag_size() > 0)
714 num_strays
+= dir
->get_frag_size();
718 stray_manager
.set_num_strays(num_strays
);
721 dout(10) << "populate_mydir done" << dendl
;
724 mds
->queue_waiters(waiting_for_open
);
729 void MDCache::open_foreign_mdsdir(inodeno_t ino
, MDSInternalContextBase
*fin
)
731 discover_base_ino(ino
, fin
, mds_rank_t(ino
& (MAX_MDS
-1)));
734 CDir
*MDCache::get_stray_dir(CInode
*in
)
737 in
->name_stray_dentry(straydname
);
739 CInode
*strayi
= get_stray();
741 frag_t fg
= strayi
->pick_dirfrag(straydname
);
742 CDir
*straydir
= strayi
->get_dirfrag(fg
);
747 CDentry
*MDCache::get_or_create_stray_dentry(CInode
*in
)
749 CDir
*straydir
= get_stray_dir(in
);
751 in
->name_stray_dentry(straydname
);
752 CDentry
*straydn
= straydir
->lookup(straydname
);
754 straydn
= straydir
->add_null_dentry(straydname
);
757 assert(straydn
->get_projected_linkage()->is_null());
760 straydn
->state_set(CDentry::STATE_STRAY
);
766 MDSCacheObject
*MDCache::get_object(MDSCacheObjectInfo
&info
)
770 return get_inode(info
.ino
, info
.snapid
);
773 CDir
*dir
= get_dirfrag(info
.dirfrag
);
776 if (info
.dname
.length())
777 return dir
->lookup(info
.dname
, info
.snapid
);
785 // ====================================================================
786 // subtree management
788 void MDCache::list_subtrees(list
<CDir
*>& ls
)
790 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
793 ls
.push_back(p
->first
);
797 * adjust the dir_auth of a subtree.
798 * merge with parent and/or child subtrees, if is it appropriate.
799 * merge can ONLY happen if both parent and child have unambiguous auth.
801 void MDCache::adjust_subtree_auth(CDir
*dir
, mds_authority_t auth
)
803 dout(7) << "adjust_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
804 << " on " << *dir
<< dendl
;
809 if (dir
->inode
->is_base()) {
810 root
= dir
; // bootstrap hack.
811 if (subtrees
.count(root
) == 0) {
813 root
->get(CDir::PIN_SUBTREE
);
816 root
= get_subtree_root(dir
); // subtree root
819 assert(subtrees
.count(root
));
820 dout(7) << " current root is " << *root
<< dendl
;
823 // i am already a subtree.
824 dir
->set_dir_auth(auth
);
826 // i am a new subtree.
827 dout(10) << " new subtree at " << *dir
<< dendl
;
828 assert(subtrees
.count(dir
) == 0);
829 subtrees
[dir
]; // create empty subtree bounds list for me.
830 dir
->get(CDir::PIN_SUBTREE
);
833 dir
->set_dir_auth(auth
);
835 // move items nested beneath me, under me.
836 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
837 while (p
!= subtrees
[root
].end()) {
838 set
<CDir
*>::iterator next
= p
;
840 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
842 dout(10) << " claiming child bound " << **p
<< dendl
;
843 subtrees
[dir
].insert(*p
);
844 subtrees
[root
].erase(p
);
849 // i am a bound of the parent subtree.
850 subtrees
[root
].insert(dir
);
852 // i am now the subtree root.
855 // adjust recursive pop counters
856 if (dir
->is_auth()) {
857 utime_t now
= ceph_clock_now();
858 CDir
*p
= dir
->get_parent_dir();
860 p
->pop_auth_subtree
.sub(now
, decayrate
, dir
->pop_auth_subtree
);
861 if (p
->is_subtree_root()) break;
862 p
= p
->inode
->get_parent_dir();
871 void MDCache::try_subtree_merge(CDir
*dir
)
873 dout(7) << "try_subtree_merge " << *dir
<< dendl
;
874 assert(subtrees
.count(dir
));
875 set
<CDir
*> oldbounds
= subtrees
[dir
];
877 set
<CInode
*> to_eval
;
878 // try merge at my root
879 try_subtree_merge_at(dir
, &to_eval
);
881 // try merge at my old bounds
882 for (auto bound
: oldbounds
)
883 try_subtree_merge_at(bound
, &to_eval
);
885 if (!(mds
->is_any_replay() || mds
->is_resolve())) {
886 for(auto in
: to_eval
)
887 eval_subtree_root(in
);
891 class C_MDC_SubtreeMergeWB
: public MDCacheLogContext
{
895 C_MDC_SubtreeMergeWB(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) : MDCacheLogContext(mdc
), in(i
), mut(m
) {}
896 void finish(int r
) override
{
897 mdcache
->subtree_merge_writebehind_finish(in
, mut
);
901 void MDCache::try_subtree_merge_at(CDir
*dir
, set
<CInode
*> *to_eval
)
903 dout(10) << "try_subtree_merge_at " << *dir
<< dendl
;
904 assert(subtrees
.count(dir
));
906 // merge with parent?
908 if (!dir
->inode
->is_base())
909 parent
= get_subtree_root(dir
->get_parent_dir());
911 if (parent
!= dir
&& // we have a parent,
912 parent
->dir_auth
== dir
->dir_auth
&& // auth matches,
913 dir
->dir_auth
.second
== CDIR_AUTH_UNKNOWN
&& // auth is unambiguous,
914 !dir
->state_test(CDir::STATE_EXPORTBOUND
) && // not an exportbound,
915 !dir
->state_test(CDir::STATE_AUXSUBTREE
)) { // not aux subtree
916 // merge with parent.
917 dout(10) << " subtree merge at " << *dir
<< dendl
;
918 dir
->set_dir_auth(CDIR_AUTH_DEFAULT
);
920 // move our bounds under the parent
921 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
922 p
!= subtrees
[dir
].end();
924 subtrees
[parent
].insert(*p
);
926 // we are no longer a subtree or bound
927 dir
->put(CDir::PIN_SUBTREE
);
929 subtrees
[parent
].erase(dir
);
931 // adjust popularity?
932 if (dir
->is_auth()) {
933 utime_t now
= ceph_clock_now();
934 CDir
*p
= dir
->get_parent_dir();
936 p
->pop_auth_subtree
.add(now
, decayrate
, dir
->pop_auth_subtree
);
937 if (p
->is_subtree_root()) break;
938 p
= p
->inode
->get_parent_dir();
942 if (to_eval
&& dir
->get_inode()->is_auth())
943 to_eval
->insert(dir
->get_inode());
949 void MDCache::subtree_merge_writebehind_finish(CInode
*in
, MutationRef
& mut
)
951 dout(10) << "subtree_merge_writebehind_finish on " << in
<< dendl
;
952 in
->pop_and_dirty_projected_inode(mut
->ls
);
955 mds
->locker
->drop_locks(mut
.get());
958 in
->auth_unpin(this);
961 void MDCache::eval_subtree_root(CInode
*diri
)
963 // evaluate subtree inode filelock?
964 // (we should scatter the filelock on subtree bounds)
965 assert(diri
->is_auth());
966 mds
->locker
->try_eval(diri
, CEPH_LOCK_IFILE
| CEPH_LOCK_INEST
);
970 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, set
<CDir
*>& bounds
, mds_authority_t auth
)
972 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
974 << " bounds " << bounds
980 if (dir
->ino() == MDS_INO_ROOT
) {
981 root
= dir
; // bootstrap hack.
982 if (subtrees
.count(root
) == 0) {
984 root
->get(CDir::PIN_SUBTREE
);
987 root
= get_subtree_root(dir
); // subtree root
990 assert(subtrees
.count(root
));
991 dout(7) << " current root is " << *root
<< dendl
;
993 mds_authority_t oldauth
= dir
->authority();
996 // i am already a subtree.
997 dir
->set_dir_auth(auth
);
999 // i am a new subtree.
1000 dout(10) << " new subtree at " << *dir
<< dendl
;
1001 assert(subtrees
.count(dir
) == 0);
1002 subtrees
[dir
]; // create empty subtree bounds list for me.
1003 dir
->get(CDir::PIN_SUBTREE
);
1006 dir
->set_dir_auth(auth
);
1008 // move items nested beneath me, under me.
1009 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1010 while (p
!= subtrees
[root
].end()) {
1011 set
<CDir
*>::iterator next
= p
;
1013 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
1015 dout(10) << " claiming child bound " << **p
<< dendl
;
1016 subtrees
[dir
].insert(*p
);
1017 subtrees
[root
].erase(p
);
1022 // i am a bound of the parent subtree.
1023 subtrees
[root
].insert(dir
);
1025 // i am now the subtree root.
1029 set
<CInode
*> to_eval
;
1031 // verify/adjust bounds.
1032 // - these may be new, or
1033 // - beneath existing ambiguous bounds (which will be collapsed),
1034 // - but NOT beneath unambiguous bounds.
1035 for (set
<CDir
*>::iterator p
= bounds
.begin();
1041 if (subtrees
[dir
].count(bound
) == 0) {
1042 if (get_subtree_root(bound
) == dir
) {
1043 dout(10) << " new bound " << *bound
<< ", adjusting auth back to old " << oldauth
<< dendl
;
1044 adjust_subtree_auth(bound
, oldauth
); // otherwise, adjust at bound.
1047 dout(10) << " want bound " << *bound
<< dendl
;
1048 CDir
*t
= get_subtree_root(bound
->get_parent_dir());
1049 if (subtrees
[t
].count(bound
) == 0) {
1051 dout(10) << " new bound " << *bound
<< dendl
;
1052 adjust_subtree_auth(bound
, t
->authority());
1054 // make sure it's nested beneath ambiguous subtree(s)
1056 while (subtrees
[dir
].count(t
) == 0)
1057 t
= get_subtree_root(t
->get_parent_dir());
1058 dout(10) << " swallowing intervening subtree at " << *t
<< dendl
;
1059 adjust_subtree_auth(t
, auth
);
1060 try_subtree_merge_at(t
, &to_eval
);
1061 t
= get_subtree_root(bound
->get_parent_dir());
1062 if (t
== dir
) break;
1067 dout(10) << " already have bound " << *bound
<< dendl
;
1070 // merge stray bounds?
1071 while (!subtrees
[dir
].empty()) {
1072 set
<CDir
*> copy
= subtrees
[dir
];
1073 for (set
<CDir
*>::iterator p
= copy
.begin(); p
!= copy
.end(); ++p
) {
1074 if (bounds
.count(*p
) == 0) {
1076 dout(10) << " swallowing extra subtree at " << *stray
<< dendl
;
1077 adjust_subtree_auth(stray
, auth
);
1078 try_subtree_merge_at(stray
, &to_eval
);
1081 // swallowing subtree may add new subtree bounds
1082 if (copy
== subtrees
[dir
])
1086 // bound should now match.
1087 verify_subtree_bounds(dir
, bounds
);
1091 if (!(mds
->is_any_replay() || mds
->is_resolve())) {
1092 for(auto in
: to_eval
)
1093 eval_subtree_root(in
);
1099 * return a set of CDir*'s that correspond to the given bound set. Only adjust
1100 * fragmentation as necessary to get an equivalent bounding set. That is, only
1101 * split if one of our frags spans the provided bounding set. Never merge.
1103 void MDCache::get_force_dirfrag_bound_set(vector
<dirfrag_t
>& dfs
, set
<CDir
*>& bounds
)
1105 dout(10) << "get_force_dirfrag_bound_set " << dfs
<< dendl
;
1108 map
<inodeno_t
, fragset_t
> byino
;
1109 for (vector
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1110 byino
[p
->ino
].insert(p
->frag
);
1111 dout(10) << " by ino: " << byino
<< dendl
;
1113 for (map
<inodeno_t
,fragset_t
>::iterator p
= byino
.begin(); p
!= byino
.end(); ++p
) {
1114 CInode
*diri
= get_inode(p
->first
);
1117 dout(10) << " checking fragset " << p
->second
.get() << " on " << *diri
<< dendl
;
1120 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1121 tmpdft
.force_to_leaf(g_ceph_context
, *q
);
1123 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
1126 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1129 frag_t approx_fg
= diri
->dirfragtree
[fg
.value()];
1131 tmpdft
.get_leaves_under(approx_fg
, ls
);
1132 for (list
<frag_t
>::iterator r
= ls
.begin(); r
!= ls
.end(); ++r
) {
1133 if (p
->second
.get().count(*r
) == 0) {
1134 // not bound, so the resolve message is from auth MDS of the dirfrag
1135 force_dir_fragment(diri
, *r
);
1140 fgls
.push_back(approx_fg
);
1142 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1144 dout(10) << " frag " << fg
<< " contains " << fgls
<< dendl
;
1145 for (list
<frag_t
>::iterator r
= fgls
.begin(); r
!= fgls
.end(); ++r
) {
1146 CDir
*dir
= diri
->get_dirfrag(*r
);
1154 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, vector
<dirfrag_t
>& bound_dfs
, mds_authority_t auth
)
1156 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
1157 << " on " << *dir
<< " bound_dfs " << bound_dfs
<< dendl
;
1160 get_force_dirfrag_bound_set(bound_dfs
, bounds
);
1161 adjust_bounded_subtree_auth(dir
, bounds
, auth
);
1164 void MDCache::map_dirfrag_set(list
<dirfrag_t
>& dfs
, set
<CDir
*>& result
)
1166 dout(10) << "map_dirfrag_set " << dfs
<< dendl
;
1169 map
<inodeno_t
, fragset_t
> ino_fragset
;
1170 for (list
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1171 ino_fragset
[p
->ino
].insert(p
->frag
);
1174 for (map
<inodeno_t
, fragset_t
>::iterator p
= ino_fragset
.begin();
1175 p
!= ino_fragset
.end();
1177 CInode
*in
= get_inode(p
->first
);
1181 list
<frag_t
> fglist
;
1182 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1183 in
->dirfragtree
.get_leaves_under(*q
, fglist
);
1185 dout(15) << "map_dirfrag_set " << p
->second
<< " -> " << fglist
1186 << " on " << *in
<< dendl
;
1188 for (list
<frag_t
>::iterator q
= fglist
.begin(); q
!= fglist
.end(); ++q
) {
1189 CDir
*dir
= in
->get_dirfrag(*q
);
1198 CDir
*MDCache::get_subtree_root(CDir
*dir
)
1200 // find the underlying dir that delegates (or is about to delegate) auth
1202 if (dir
->is_subtree_root())
1204 dir
= dir
->get_inode()->get_parent_dir();
1210 CDir
*MDCache::get_projected_subtree_root(CDir
*dir
)
1212 // find the underlying dir that delegates (or is about to delegate) auth
1214 if (dir
->is_subtree_root())
1216 dir
= dir
->get_inode()->get_projected_parent_dir();
1222 void MDCache::remove_subtree(CDir
*dir
)
1224 dout(10) << "remove_subtree " << *dir
<< dendl
;
1225 assert(subtrees
.count(dir
));
1226 assert(subtrees
[dir
].empty());
1227 subtrees
.erase(dir
);
1228 dir
->put(CDir::PIN_SUBTREE
);
1229 if (dir
->get_parent_dir()) {
1230 CDir
*p
= get_subtree_root(dir
->get_parent_dir());
1231 assert(subtrees
[p
].count(dir
));
1232 subtrees
[p
].erase(dir
);
1236 void MDCache::get_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1238 assert(subtrees
.count(dir
));
1239 bounds
= subtrees
[dir
];
1242 void MDCache::get_wouldbe_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1244 if (subtrees
.count(dir
)) {
1245 // just copy them, dir is a subtree.
1246 get_subtree_bounds(dir
, bounds
);
1249 CDir
*root
= get_subtree_root(dir
);
1250 for (set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1251 p
!= subtrees
[root
].end();
1255 t
= t
->get_parent_dir();
1266 void MDCache::verify_subtree_bounds(CDir
*dir
, const set
<CDir
*>& bounds
)
1268 // for debugging only.
1269 assert(subtrees
.count(dir
));
1270 if (bounds
!= subtrees
[dir
]) {
1271 dout(0) << "verify_subtree_bounds failed" << dendl
;
1272 set
<CDir
*> b
= bounds
;
1273 for (auto &cd
: subtrees
[dir
]) {
1274 if (bounds
.count(cd
)) {
1278 dout(0) << " missing bound " << *cd
<< dendl
;
1280 for (const auto &cd
: b
)
1281 dout(0) << " extra bound " << *cd
<< dendl
;
1283 assert(bounds
== subtrees
[dir
]);
1286 void MDCache::verify_subtree_bounds(CDir
*dir
, const list
<dirfrag_t
>& bounds
)
1288 // for debugging only.
1289 assert(subtrees
.count(dir
));
1291 // make sure that any bounds i do have are properly noted as such.
1293 for (const auto &fg
: bounds
) {
1294 CDir
*bd
= get_dirfrag(fg
);
1296 if (subtrees
[dir
].count(bd
) == 0) {
1297 dout(0) << "verify_subtree_bounds failed: extra bound " << *bd
<< dendl
;
1301 assert(failed
== 0);
1304 void MDCache::project_subtree_rename(CInode
*diri
, CDir
*olddir
, CDir
*newdir
)
1306 dout(10) << "project_subtree_rename " << *diri
<< " from " << *olddir
1307 << " to " << *newdir
<< dendl
;
1308 projected_subtree_renames
[diri
].push_back(pair
<CDir
*,CDir
*>(olddir
, newdir
));
1311 void MDCache::adjust_subtree_after_rename(CInode
*diri
, CDir
*olddir
, bool pop
)
1313 dout(10) << "adjust_subtree_after_rename " << *diri
<< " from " << *olddir
<< dendl
;
1317 CDir
*newdir
= diri
->get_parent_dir();
1320 map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.find(diri
);
1321 assert(p
!= projected_subtree_renames
.end());
1322 assert(!p
->second
.empty());
1323 assert(p
->second
.front().first
== olddir
);
1324 assert(p
->second
.front().second
== newdir
);
1325 p
->second
.pop_front();
1326 if (p
->second
.empty())
1327 projected_subtree_renames
.erase(p
);
1332 // make sure subtree dirfrags are at the front of the list
1333 diri
->get_subtree_dirfrags(dfls
);
1334 diri
->get_nested_dirfrags(dfls
);
1335 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
1338 dout(10) << "dirfrag " << *dir
<< dendl
;
1339 CDir
*oldparent
= get_subtree_root(olddir
);
1340 dout(10) << " old parent " << *oldparent
<< dendl
;
1341 CDir
*newparent
= get_subtree_root(newdir
);
1342 dout(10) << " new parent " << *newparent
<< dendl
;
1344 if (oldparent
== newparent
) {
1345 dout(10) << "parent unchanged for " << *dir
<< " at " << *oldparent
<< dendl
;
1349 if (dir
->is_subtree_root()) {
1350 // children are fine. change parent.
1351 dout(10) << "moving " << *dir
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1352 assert(subtrees
[oldparent
].count(dir
));
1353 subtrees
[oldparent
].erase(dir
);
1354 assert(subtrees
.count(newparent
));
1355 subtrees
[newparent
].insert(dir
);
1356 // caller is responsible for 'eval diri'
1357 try_subtree_merge_at(dir
, NULL
);
1361 // see if any old bounds move to the new parent.
1363 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
1364 p
!= subtrees
[oldparent
].end();
1367 CDir
*broot
= get_subtree_root(bound
->get_parent_dir());
1368 if (broot
!= oldparent
) {
1369 assert(broot
== newparent
);
1370 tomove
.push_back(bound
);
1373 for (list
<CDir
*>::iterator p
= tomove
.begin(); p
!= tomove
.end(); ++p
) {
1375 dout(10) << "moving bound " << *bound
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1376 subtrees
[oldparent
].erase(bound
);
1377 subtrees
[newparent
].insert(bound
);
1381 if (oldparent
->authority() != newparent
->authority()) {
1382 adjust_subtree_auth(dir
, oldparent
->authority());
1383 // caller is responsible for 'eval diri'
1384 try_subtree_merge_at(dir
, NULL
);
1393 void MDCache::get_fullauth_subtrees(set
<CDir
*>& s
)
1395 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1396 p
!= subtrees
.end();
1398 CDir
*root
= p
->first
;
1399 if (root
->is_full_dir_auth())
1403 void MDCache::get_auth_subtrees(set
<CDir
*>& s
)
1405 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1406 p
!= subtrees
.end();
1408 CDir
*root
= p
->first
;
1409 if (root
->is_auth())
1417 int MDCache::num_subtrees()
1419 return subtrees
.size();
1422 int MDCache::num_subtrees_fullauth()
1425 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1426 p
!= subtrees
.end();
1428 CDir
*root
= p
->first
;
1429 if (root
->is_full_dir_auth())
1435 int MDCache::num_subtrees_fullnonauth()
1438 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1439 p
!= subtrees
.end();
1441 CDir
*root
= p
->first
;
1442 if (root
->is_full_dir_nonauth())
1450 // ===================================
1451 // journal and snap/cow helpers
1455 * find first inode in cache that follows given snapid. otherwise, return current.
1457 CInode
*MDCache::pick_inode_snap(CInode
*in
, snapid_t follows
)
1459 dout(10) << "pick_inode_snap follows " << follows
<< " on " << *in
<< dendl
;
1460 assert(in
->last
== CEPH_NOSNAP
);
1462 SnapRealm
*realm
= in
->find_snaprealm();
1463 const set
<snapid_t
>& snaps
= realm
->get_snaps();
1464 dout(10) << " realm " << *realm
<< " " << *realm
->inode
<< dendl
;
1465 dout(10) << " snaps " << snaps
<< dendl
;
1470 for (set
<snapid_t
>::const_iterator p
= snaps
.upper_bound(follows
); // first item > follows
1473 CInode
*t
= get_inode(in
->ino(), *p
);
1476 dout(10) << "pick_inode_snap snap " << *p
<< " found " << *in
<< dendl
;
1485 * note: i'm currently cheating wrt dirty and inode.version on cow
1486 * items. instead of doing a full dir predirty, i just take the
1487 * original item's version, and set the dirty flag (via
1488 * mutation::add_cow_{inode,dentry}() and mutation::apply(). that
1489 * means a special case in the dir commit clean sweep assertions.
1492 CInode
*MDCache::cow_inode(CInode
*in
, snapid_t last
)
1494 assert(last
>= in
->first
);
1496 SnapRealm
*realm
= in
->find_snaprealm();
1497 const set
<snapid_t
>& snaps
= realm
->get_snaps();
1499 // make sure snap inode's last match existing snapshots.
1500 // MDCache::pick_inode_snap() requires this.
1501 snapid_t last_snap
= last
;
1502 if (snaps
.count(last
) == 0) {
1503 set
<snapid_t
>::const_iterator p
= snaps
.upper_bound(last
);
1504 if (p
!= snaps
.begin()) {
1506 if (*p
>= in
->first
)
1511 CInode
*oldin
= new CInode(this, true, in
->first
, last_snap
);
1512 oldin
->inode
= *in
->get_previous_projected_inode();
1513 oldin
->symlink
= in
->symlink
;
1514 oldin
->xattrs
= *in
->get_previous_projected_xattrs();
1515 oldin
->inode
.trim_client_ranges(last
);
1517 if (in
->first
< in
->oldest_snap
)
1518 in
->oldest_snap
= in
->first
;
1522 dout(10) << "cow_inode " << *in
<< " to " << *oldin
<< dendl
;
1525 if (in
->last
!= CEPH_NOSNAP
) {
1526 CInode
*head_in
= get_inode(in
->ino());
1528 if (head_in
->split_need_snapflush(oldin
, in
)) {
1529 oldin
->client_snap_caps
= in
->client_snap_caps
;
1530 for (compact_map
<int,set
<client_t
> >::iterator p
= in
->client_snap_caps
.begin();
1531 p
!= in
->client_snap_caps
.end();
1533 SimpleLock
*lock
= oldin
->get_lock(p
->first
);
1535 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
1536 oldin
->auth_pin(lock
);
1537 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1538 lock
->get_wrlock(true);
1546 for (map
<client_t
,Capability
*>::iterator p
= in
->client_caps
.begin();
1547 p
!= in
->client_caps
.end();
1549 client_t client
= p
->first
;
1550 Capability
*cap
= p
->second
;
1551 int issued
= cap
->issued();
1552 if ((issued
& CEPH_CAP_ANY_WR
) &&
1553 cap
->client_follows
< last
) {
1555 for (int i
= 0; i
< num_cinode_locks
; i
++) {
1556 if (issued
& cinode_lock_info
[i
].wr_caps
) {
1557 int lockid
= cinode_lock_info
[i
].lock
;
1558 SimpleLock
*lock
= oldin
->get_lock(lockid
);
1560 oldin
->client_snap_caps
[lockid
].insert(client
);
1561 oldin
->auth_pin(lock
);
1562 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1563 lock
->get_wrlock(true);
1564 dout(10) << " client." << client
<< " cap " << ccap_string(issued
& cinode_lock_info
[i
].wr_caps
)
1565 << " wrlock lock " << *lock
<< " on " << *oldin
<< dendl
;
1568 cap
->client_follows
= last
;
1570 // we need snapflushes for any intervening snaps
1571 dout(10) << " snaps " << snaps
<< dendl
;
1572 for (set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(oldin
->first
);
1573 q
!= snaps
.end() && *q
<= last
;
1575 in
->add_need_snapflush(oldin
, *q
, client
);
1578 dout(10) << " ignoring client." << client
<< " cap follows " << cap
->client_follows
<< dendl
;
1585 void MDCache::journal_cow_dentry(MutationImpl
*mut
, EMetaBlob
*metablob
,
1586 CDentry
*dn
, snapid_t follows
,
1587 CInode
**pcow_inode
, CDentry::linkage_t
*dnl
)
1590 dout(10) << "journal_cow_dentry got null CDentry, returning" << dendl
;
1593 dout(10) << "journal_cow_dentry follows " << follows
<< " on " << *dn
<< dendl
;
1594 assert(dn
->is_auth());
1596 // nothing to cow on a null dentry, fix caller
1598 dnl
= dn
->get_projected_linkage();
1599 assert(!dnl
->is_null());
1601 if (dnl
->is_primary() && dnl
->get_inode()->is_multiversion()) {
1602 // multiversion inode.
1603 CInode
*in
= dnl
->get_inode();
1604 SnapRealm
*realm
= NULL
;
1606 if (in
->get_projected_parent_dn() != dn
) {
1607 assert(follows
== CEPH_NOSNAP
);
1608 realm
= dn
->dir
->inode
->find_snaprealm();
1609 snapid_t dir_follows
= realm
->get_newest_snap();
1611 if (dir_follows
+1 > dn
->first
) {
1612 snapid_t oldfirst
= dn
->first
;
1613 dn
->first
= dir_follows
+1;
1614 if (realm
->has_snaps_in_range(oldfirst
, dir_follows
)) {
1615 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->name
, in
->ino(), in
->d_type(),
1616 oldfirst
, dir_follows
);
1618 dout(10) << " olddn " << *olddn
<< dendl
;
1619 metablob
->add_remote_dentry(olddn
, true);
1620 mut
->add_cow_dentry(olddn
);
1621 // FIXME: adjust link count here? hmm.
1623 if (dir_follows
+1 > in
->first
)
1624 in
->cow_old_inode(dir_follows
, false);
1628 if (in
->snaprealm
) {
1629 realm
= in
->snaprealm
;
1630 follows
= realm
->get_newest_seq();
1632 follows
= dir_follows
;
1634 realm
= in
->find_snaprealm();
1635 if (follows
== CEPH_NOSNAP
)
1636 follows
= realm
->get_newest_seq();
1640 if (follows
< in
->first
) {
1641 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *in
<< dendl
;
1645 if (!realm
->has_snaps_in_range(in
->first
, follows
)) {
1646 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *in
<< dendl
;
1647 in
->first
= follows
+ 1;
1651 in
->cow_old_inode(follows
, false);
1654 SnapRealm
*realm
= dn
->dir
->inode
->find_snaprealm();
1655 if (follows
== CEPH_NOSNAP
)
1656 follows
= realm
->get_newest_seq();
1659 if (follows
< dn
->first
) {
1660 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *dn
<< dendl
;
1664 // update dn.first before adding old dentry to cdir's map
1665 snapid_t oldfirst
= dn
->first
;
1666 dn
->first
= follows
+1;
1668 CInode
*in
= dnl
->is_primary() ? dnl
->get_inode() : NULL
;
1670 if (!realm
->has_snaps_in_range(oldfirst
, follows
)) {
1671 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *dn
<< dendl
;
1673 in
->first
= follows
+1;
1677 dout(10) << " dn " << *dn
<< dendl
;
1679 CInode
*oldin
= cow_inode(in
, follows
);
1680 mut
->add_cow_inode(oldin
);
1682 *pcow_inode
= oldin
;
1683 CDentry
*olddn
= dn
->dir
->add_primary_dentry(dn
->name
, oldin
, oldfirst
, follows
);
1684 oldin
->inode
.version
= olddn
->pre_dirty();
1685 dout(10) << " olddn " << *olddn
<< dendl
;
1686 bool need_snapflush
= !oldin
->client_snap_caps
.empty();
1688 mut
->ls
->open_files
.push_back(&oldin
->item_open_file
);
1689 metablob
->add_primary_dentry(olddn
, 0, true, false, false, need_snapflush
);
1690 mut
->add_cow_dentry(olddn
);
1692 assert(dnl
->is_remote());
1693 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->name
, dnl
->get_remote_ino(), dnl
->get_remote_d_type(),
1696 dout(10) << " olddn " << *olddn
<< dendl
;
1697 metablob
->add_remote_dentry(olddn
, true);
1698 mut
->add_cow_dentry(olddn
);
1704 void MDCache::journal_cow_inode(MutationRef
& mut
, EMetaBlob
*metablob
,
1705 CInode
*in
, snapid_t follows
,
1706 CInode
**pcow_inode
)
1708 dout(10) << "journal_cow_inode follows " << follows
<< " on " << *in
<< dendl
;
1709 CDentry
*dn
= in
->get_projected_parent_dn();
1710 journal_cow_dentry(mut
.get(), metablob
, dn
, follows
, pcow_inode
);
1713 void MDCache::journal_dirty_inode(MutationImpl
*mut
, EMetaBlob
*metablob
, CInode
*in
, snapid_t follows
)
1715 if (in
->is_base()) {
1716 metablob
->add_root(true, in
, in
->get_projected_inode());
1718 if (follows
== CEPH_NOSNAP
&& in
->last
!= CEPH_NOSNAP
)
1719 follows
= in
->first
- 1;
1720 CDentry
*dn
= in
->get_projected_parent_dn();
1721 if (!dn
->get_projected_linkage()->is_null()) // no need to cow a null dentry
1722 journal_cow_dentry(mut
, metablob
, dn
, follows
);
1723 if (in
->get_projected_inode()->is_backtrace_updated()) {
1724 bool dirty_pool
= in
->get_projected_inode()->layout
.pool_id
!=
1725 in
->get_previous_projected_inode()->layout
.pool_id
;
1726 metablob
->add_primary_dentry(dn
, in
, true, true, dirty_pool
);
1728 metablob
->add_primary_dentry(dn
, in
, true);
1735 // nested ---------------------------------------------------------------
1737 void MDCache::project_rstat_inode_to_frag(CInode
*cur
, CDir
*parent
, snapid_t first
,
1738 int linkunlink
, SnapRealm
*prealm
)
1740 CDentry
*parentdn
= cur
->get_projected_parent_dn();
1741 inode_t
*curi
= cur
->get_projected_inode();
1743 if (cur
->first
> first
)
1746 dout(10) << "projected_rstat_inode_to_frag first " << first
<< " linkunlink " << linkunlink
1747 << " " << *cur
<< dendl
;
1748 dout(20) << " frag head is [" << parent
->first
<< ",head] " << dendl
;
1749 dout(20) << " inode update is [" << first
<< "," << cur
->last
<< "]" << dendl
;
1752 * FIXME. this incompletely propagates rstats to _old_ parents
1753 * (i.e. shortly after a directory rename). but we need full
1754 * blown hard link backpointers to make this work properly...
1756 snapid_t floor
= parentdn
->first
;
1757 dout(20) << " floor of " << floor
<< " from parent dn " << *parentdn
<< dendl
;
1760 prealm
= parent
->inode
->find_snaprealm();
1761 const set
<snapid_t
> snaps
= prealm
->get_snaps();
1763 if (cur
->last
!= CEPH_NOSNAP
) {
1764 assert(cur
->dirty_old_rstats
.empty());
1765 set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(MAX(first
, floor
));
1766 if (q
== snaps
.end() || *q
> cur
->last
)
1770 if (cur
->last
>= floor
) {
1772 if (cur
->state_test(CInode::STATE_AMBIGUOUSAUTH
) && cur
->is_auth()) {
1773 // rename src inode is not projected in the slave rename prep case. so we should
1774 // avoid updateing the inode.
1775 assert(linkunlink
< 0);
1776 assert(cur
->is_frozen_inode());
1779 _project_rstat_inode_to_frag(*curi
, MAX(first
, floor
), cur
->last
, parent
,
1780 linkunlink
, update
);
1783 if (g_conf
->mds_snap_rstat
) {
1784 for (compact_set
<snapid_t
>::iterator p
= cur
->dirty_old_rstats
.begin();
1785 p
!= cur
->dirty_old_rstats
.end();
1787 old_inode_t
& old
= cur
->old_inodes
[*p
];
1788 snapid_t ofirst
= MAX(old
.first
, floor
);
1789 set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(ofirst
);
1790 if (q
== snaps
.end() || *q
> *p
)
1793 _project_rstat_inode_to_frag(old
.inode
, ofirst
, *p
, parent
, 0, false);
1796 cur
->dirty_old_rstats
.clear();
1800 void MDCache::_project_rstat_inode_to_frag(inode_t
& inode
, snapid_t ofirst
, snapid_t last
,
1801 CDir
*parent
, int linkunlink
, bool update_inode
)
1803 dout(10) << "_project_rstat_inode_to_frag [" << ofirst
<< "," << last
<< "]" << dendl
;
1804 dout(20) << " inode rstat " << inode
.rstat
<< dendl
;
1805 dout(20) << " inode accounted_rstat " << inode
.accounted_rstat
<< dendl
;
1807 if (linkunlink
== 0) {
1808 delta
.add(inode
.rstat
);
1809 delta
.sub(inode
.accounted_rstat
);
1810 } else if (linkunlink
< 0) {
1811 delta
.sub(inode
.accounted_rstat
);
1813 delta
.add(inode
.rstat
);
1815 dout(20) << " delta " << delta
<< dendl
;
1818 inode
.accounted_rstat
= inode
.rstat
;
1820 while (last
>= ofirst
) {
1822 * pick fnode version to update. at each iteration, we want to
1823 * pick a segment ending in 'last' to update. split as necessary
1824 * to make that work. then, adjust first up so that we only
1825 * update one segment at a time. then loop to cover the whole
1826 * [ofirst,last] interval.
1828 nest_info_t
*prstat
;
1830 fnode_t
*pf
= parent
->get_projected_fnode();
1831 if (last
== CEPH_NOSNAP
) {
1832 if (g_conf
->mds_snap_rstat
)
1833 first
= MAX(ofirst
, parent
->first
);
1835 first
= parent
->first
;
1836 prstat
= &pf
->rstat
;
1837 dout(20) << " projecting to head [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1839 if (first
> parent
->first
&&
1840 !(pf
->rstat
== pf
->accounted_rstat
)) {
1841 dout(10) << " target snapped and not fully accounted, cow to dirty_old_rstat ["
1842 << parent
->first
<< "," << (first
-1) << "] "
1843 << " " << *prstat
<< "/" << pf
->accounted_rstat
1845 parent
->dirty_old_rstat
[first
-1].first
= parent
->first
;
1846 parent
->dirty_old_rstat
[first
-1].rstat
= pf
->rstat
;
1847 parent
->dirty_old_rstat
[first
-1].accounted_rstat
= pf
->accounted_rstat
;
1849 parent
->first
= first
;
1850 } else if (!g_conf
->mds_snap_rstat
) {
1851 // drop snapshots' rstats
1853 } else if (last
>= parent
->first
) {
1854 first
= parent
->first
;
1855 parent
->dirty_old_rstat
[last
].first
= first
;
1856 parent
->dirty_old_rstat
[last
].rstat
= pf
->rstat
;
1857 parent
->dirty_old_rstat
[last
].accounted_rstat
= pf
->accounted_rstat
;
1858 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1859 dout(10) << " projecting to newly split dirty_old_fnode [" << first
<< "," << last
<< "] "
1860 << " " << *prstat
<< "/" << pf
->accounted_rstat
<< dendl
;
1862 // be careful, dirty_old_rstat is a _sparse_ map.
1863 // sorry, this is ugly.
1866 // find any intersection with last
1867 compact_map
<snapid_t
,old_rstat_t
>::iterator p
= parent
->dirty_old_rstat
.lower_bound(last
);
1868 if (p
== parent
->dirty_old_rstat
.end()) {
1869 dout(20) << " no dirty_old_rstat with last >= last " << last
<< dendl
;
1870 if (!parent
->dirty_old_rstat
.empty() && parent
->dirty_old_rstat
.rbegin()->first
>= first
) {
1871 dout(20) << " last dirty_old_rstat ends at " << parent
->dirty_old_rstat
.rbegin()->first
<< dendl
;
1872 first
= parent
->dirty_old_rstat
.rbegin()->first
+1;
1875 // *p last is >= last
1876 if (p
->second
.first
<= last
) {
1877 // *p intersects [first,last]
1878 if (p
->second
.first
< first
) {
1879 dout(10) << " splitting off left bit [" << p
->second
.first
<< "," << first
-1 << "]" << dendl
;
1880 parent
->dirty_old_rstat
[first
-1] = p
->second
;
1881 p
->second
.first
= first
;
1883 if (p
->second
.first
> first
)
1884 first
= p
->second
.first
;
1885 if (last
< p
->first
) {
1886 dout(10) << " splitting off right bit [" << last
+1 << "," << p
->first
<< "]" << dendl
;
1887 parent
->dirty_old_rstat
[last
] = p
->second
;
1888 p
->second
.first
= last
+1;
1891 // *p is to the _right_ of [first,last]
1892 p
= parent
->dirty_old_rstat
.lower_bound(first
);
1893 // new *p last is >= first
1894 if (p
->second
.first
<= last
&& // new *p isn't also to the right, and
1895 p
->first
>= first
) { // it intersects our first bit,
1896 dout(10) << " staying to the right of [" << p
->second
.first
<< "," << p
->first
<< "]..." << dendl
;
1899 dout(10) << " projecting to new dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1902 dout(20) << " projecting to dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1903 parent
->dirty_old_rstat
[last
].first
= first
;
1904 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1908 dout(20) << " project to [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1909 assert(last
>= first
);
1912 inode
.accounted_rstat
= inode
.rstat
;
1913 dout(20) << " result [" << first
<< "," << last
<< "] " << *prstat
<< " " << *parent
<< dendl
;
1919 void MDCache::project_rstat_frag_to_inode(nest_info_t
& rstat
, nest_info_t
& accounted_rstat
,
1920 snapid_t ofirst
, snapid_t last
,
1921 CInode
*pin
, bool cow_head
)
1923 dout(10) << "project_rstat_frag_to_inode [" << ofirst
<< "," << last
<< "]" << dendl
;
1924 dout(20) << " frag rstat " << rstat
<< dendl
;
1925 dout(20) << " frag accounted_rstat " << accounted_rstat
<< dendl
;
1926 nest_info_t delta
= rstat
;
1927 delta
.sub(accounted_rstat
);
1928 dout(20) << " delta " << delta
<< dendl
;
1930 while (last
>= ofirst
) {
1933 if (last
== pin
->last
) {
1934 pi
= pin
->get_projected_inode();
1935 first
= MAX(ofirst
, pin
->first
);
1936 if (first
> pin
->first
) {
1937 old_inode_t
& old
= pin
->cow_old_inode(first
-1, cow_head
);
1938 dout(20) << " cloned old_inode rstat is " << old
.inode
.rstat
<< dendl
;
1941 if (last
>= pin
->first
) {
1943 pin
->cow_old_inode(last
, cow_head
);
1945 // our life is easier here because old_inodes is not sparse
1946 // (although it may not begin at snapid 1)
1947 compact_map
<snapid_t
,old_inode_t
>::iterator p
= pin
->old_inodes
.lower_bound(last
);
1948 if (p
== pin
->old_inodes
.end()) {
1949 dout(10) << " no old_inode <= " << last
<< ", done." << dendl
;
1952 first
= p
->second
.first
;
1954 dout(10) << " oldest old_inode is [" << first
<< "," << p
->first
<< "], done." << dendl
;
1955 //assert(p == pin->old_inodes.begin());
1958 if (p
->first
> last
) {
1959 dout(10) << " splitting right old_inode [" << first
<< "," << p
->first
<< "] to ["
1960 << (last
+1) << "," << p
->first
<< "]" << dendl
;
1961 pin
->old_inodes
[last
] = p
->second
;
1962 p
->second
.first
= last
+1;
1963 pin
->dirty_old_rstats
.insert(p
->first
);
1966 if (first
< ofirst
) {
1967 dout(10) << " splitting left old_inode [" << first
<< "," << last
<< "] to ["
1968 << first
<< "," << ofirst
-1 << "]" << dendl
;
1969 pin
->old_inodes
[ofirst
-1] = pin
->old_inodes
[last
];
1970 pin
->dirty_old_rstats
.insert(ofirst
-1);
1971 pin
->old_inodes
[last
].first
= first
= ofirst
;
1973 pi
= &pin
->old_inodes
[last
].inode
;
1974 pin
->dirty_old_rstats
.insert(last
);
1976 dout(20) << " projecting to [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1977 pi
->rstat
.add(delta
);
1978 dout(20) << " result [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1984 void MDCache::broadcast_quota_to_client(CInode
*in
)
1986 if (!in
->is_auth() || in
->is_frozen())
1989 inode_t
*i
= in
->get_projected_inode();
1991 if (!i
->quota
.is_enable())
1994 for (map
<client_t
,Capability
*>::iterator it
= in
->client_caps
.begin();
1995 it
!= in
->client_caps
.end();
1997 Session
*session
= mds
->get_session(it
->first
);
1998 if (!session
|| !session
->connection
||
1999 !session
->connection
->has_feature(CEPH_FEATURE_MDS_QUOTA
))
2002 Capability
*cap
= it
->second
;
2003 if (cap
->last_rbytes
== i
->rstat
.rbytes
&&
2004 cap
->last_rsize
== i
->rstat
.rsize())
2007 if (i
->quota
.max_files
> 0) {
2008 if (i
->rstat
.rsize() >= i
->quota
.max_files
)
2011 if ((abs(cap
->last_rsize
- i
->quota
.max_files
) >> 4) <
2012 abs(cap
->last_rsize
- i
->rstat
.rsize()))
2016 if (i
->quota
.max_bytes
> 0) {
2017 if (i
->rstat
.rbytes
> i
->quota
.max_bytes
- (i
->quota
.max_bytes
>> 3))
2020 if ((abs(cap
->last_rbytes
- i
->quota
.max_bytes
) >> 4) <
2021 abs(cap
->last_rbytes
- i
->rstat
.rbytes
))
2028 cap
->last_rsize
= i
->rstat
.rsize();
2029 cap
->last_rbytes
= i
->rstat
.rbytes
;
2031 MClientQuota
*msg
= new MClientQuota();
2032 msg
->ino
= in
->ino();
2033 msg
->rstat
= i
->rstat
;
2034 msg
->quota
= i
->quota
;
2035 mds
->send_message_client_counted(msg
, session
->connection
);
2037 for (compact_map
<mds_rank_t
, unsigned>::iterator it
= in
->replicas_begin();
2038 it
!= in
->replicas_end();
2040 MGatherCaps
*msg
= new MGatherCaps
;
2041 msg
->ino
= in
->ino();
2042 mds
->send_message_mds(msg
, it
->first
);
2047 * NOTE: we _have_ to delay the scatter if we are called during a
2048 * rejoin, because we can't twiddle locks between when the
2049 * rejoin_(weak|strong) is received and when we send the rejoin_ack.
2050 * normally, this isn't a problem: a recover mds doesn't twiddle locks
2051 * (no requests), and a survivor acks immediately. _except_ that
2052 * during rejoin_(weak|strong) processing, we may complete a lock
2053 * gather, and do a scatter_writebehind.. and we _can't_ twiddle the
2054 * scatterlock state in that case or the lock states will get out of
2055 * sync between the auth and replica.
2057 * the simple solution is to never do the scatter here. instead, put
2058 * the scatterlock on a list if it isn't already wrlockable. this is
2059 * probably the best plan anyway, since we avoid too many
2060 * scatters/locks under normal usage.
2063 * some notes on dirlock/nestlock scatterlock semantics:
2065 * the fragstat (dirlock) will never be updated without
2066 * dirlock+nestlock wrlock held by the caller.
2068 * the rstat (nestlock) _may_ get updated without a wrlock when nested
2069 * data is pushed up the tree. this could be changed with some
2070 * restructuring here, but in its current form we ensure that the
2071 * fragstat+rstat _always_ reflect an accurrate summation over the dir
2072 * frag, which is nice. and, we only need to track frags that need to
2073 * be nudged (and not inodes with pending rstat changes that need to
2074 * be pushed into the frag). a consequence of this is that the
2075 * accounted_rstat on scatterlock sync may not match our current
2076 * rstat. this is normal and expected.
2078 void MDCache::predirty_journal_parents(MutationRef mut
, EMetaBlob
*blob
,
2079 CInode
*in
, CDir
*parent
,
2080 int flags
, int linkunlink
,
2083 bool primary_dn
= flags
& PREDIRTY_PRIMARY
;
2084 bool do_parent_mtime
= flags
& PREDIRTY_DIR
;
2085 bool shallow
= flags
& PREDIRTY_SHALLOW
;
2087 assert(mds
->mdlog
->entry_is_open());
2089 // make sure stamp is set
2090 if (mut
->get_mds_stamp() == utime_t())
2091 mut
->set_mds_stamp(ceph_clock_now());
2096 dout(10) << "predirty_journal_parents"
2097 << (do_parent_mtime
? " do_parent_mtime":"")
2098 << " linkunlink=" << linkunlink
2099 << (primary_dn
? " primary_dn":" remote_dn")
2100 << (shallow
? " SHALLOW":"")
2101 << " follows " << cfollows
2102 << " " << *in
<< dendl
;
2106 parent
= in
->get_projected_parent_dn()->get_dir();
2109 if (flags
== 0 && linkunlink
== 0) {
2110 dout(10) << " no flags/linkunlink, just adding dir context to blob(s)" << dendl
;
2111 blob
->add_dir_context(parent
);
2115 // build list of inodes to wrlock, dirty, and update
2118 CDentry
*parentdn
= NULL
;
2121 //assert(cur->is_auth() || !primary_dn); // this breaks the rename auth twiddle hack
2122 assert(parent
->is_auth());
2124 // opportunistically adjust parent dirfrag
2125 CInode
*pin
= parent
->get_inode();
2128 mut
->auth_pin(parent
);
2129 mut
->add_projected_fnode(parent
);
2131 fnode_t
*pf
= parent
->project_fnode();
2132 pf
->version
= parent
->pre_dirty();
2134 if (do_parent_mtime
|| linkunlink
) {
2135 assert(mut
->wrlocks
.count(&pin
->filelock
));
2136 assert(mut
->wrlocks
.count(&pin
->nestlock
));
2137 assert(cfollows
== CEPH_NOSNAP
);
2139 // update stale fragstat/rstat?
2140 parent
->resync_accounted_fragstat();
2141 parent
->resync_accounted_rstat();
2143 if (do_parent_mtime
) {
2144 pf
->fragstat
.mtime
= mut
->get_op_stamp();
2145 pf
->fragstat
.change_attr
++;
2146 dout(10) << "predirty_journal_parents bumping change_attr to " << pf
->fragstat
.change_attr
<< " on " << parent
<< dendl
;
2147 if (pf
->fragstat
.mtime
> pf
->rstat
.rctime
) {
2148 dout(10) << "predirty_journal_parents updating mtime on " << *parent
<< dendl
;
2149 pf
->rstat
.rctime
= pf
->fragstat
.mtime
;
2151 dout(10) << "predirty_journal_parents updating mtime UNDERWATER on " << *parent
<< dendl
;
2155 dout(10) << "predirty_journal_parents updating size on " << *parent
<< dendl
;
2157 pf
->fragstat
.nsubdirs
+= linkunlink
;
2158 //pf->rstat.rsubdirs += linkunlink;
2160 pf
->fragstat
.nfiles
+= linkunlink
;
2161 //pf->rstat.rfiles += linkunlink;
2168 // don't update parent this pass
2169 } else if (!linkunlink
&& !(pin
->nestlock
.can_wrlock(-1) &&
2170 pin
->versionlock
.can_wrlock())) {
2171 dout(20) << " unwritable parent nestlock " << pin
->nestlock
2172 << ", marking dirty rstat on " << *cur
<< dendl
;
2173 cur
->mark_dirty_rstat();
2175 // if we don't hold a wrlock reference on this nestlock, take one,
2176 // because we are about to write into the dirfrag fnode and that needs
2177 // to commit before the lock can cycle.
2179 assert(pin
->nestlock
.get_num_wrlocks() || mut
->is_slave());
2182 if (mut
->wrlocks
.count(&pin
->nestlock
) == 0) {
2183 dout(10) << " taking wrlock on " << pin
->nestlock
<< " on " << *pin
<< dendl
;
2184 mds
->locker
->wrlock_force(&pin
->nestlock
, mut
);
2187 // now we can project the inode rstat diff the dirfrag
2188 SnapRealm
*prealm
= pin
->find_snaprealm();
2190 snapid_t follows
= cfollows
;
2191 if (follows
== CEPH_NOSNAP
)
2192 follows
= prealm
->get_newest_seq();
2194 snapid_t first
= follows
+1;
2196 // first, if the frag is stale, bring it back in sync.
2197 parent
->resync_accounted_rstat();
2199 // now push inode rstats into frag
2200 project_rstat_inode_to_frag(cur
, parent
, first
, linkunlink
, prealm
);
2201 cur
->clear_dirty_rstat();
2205 if (!pin
->is_auth() || (!mut
->is_auth_pinned(pin
) && !pin
->can_auth_pin())) {
2206 dout(10) << "predirty_journal_parents !auth or ambig or can't authpin on " << *pin
<< dendl
;
2210 // delay propagating until later?
2211 if (!stop
&& !first
&&
2212 g_conf
->mds_dirstat_min_interval
> 0) {
2213 double since_last_prop
= mut
->get_mds_stamp() - pin
->last_dirstat_prop
;
2214 if (since_last_prop
< g_conf
->mds_dirstat_min_interval
) {
2215 dout(10) << "predirty_journal_parents last prop " << since_last_prop
2216 << " < " << g_conf
->mds_dirstat_min_interval
2217 << ", stopping" << dendl
;
2220 dout(10) << "predirty_journal_parents last prop " << since_last_prop
<< " ago, continuing" << dendl
;
2224 // can cast only because i'm passing nowait=true in the sole user
2225 MDRequestRef mdmut
= static_cast<MDRequestImpl
*>(mut
.get());
2227 mut
->wrlocks
.count(&pin
->nestlock
) == 0 &&
2228 (!pin
->versionlock
.can_wrlock() || // make sure we can take versionlock, too
2230 !mds
->locker
->wrlock_start(&pin
->nestlock
, mdmut
, true)
2231 )) { // ** do not initiate.. see above comment **
2232 dout(10) << "predirty_journal_parents can't wrlock one of " << pin
->versionlock
<< " or " << pin
->nestlock
2233 << " on " << *pin
<< dendl
;
2237 dout(10) << "predirty_journal_parents stop. marking nestlock on " << *pin
<< dendl
;
2238 mds
->locker
->mark_updated_scatterlock(&pin
->nestlock
);
2239 mut
->ls
->dirty_dirfrag_nest
.push_back(&pin
->item_dirty_dirfrag_nest
);
2240 mut
->add_updated_lock(&pin
->nestlock
);
2241 if (do_parent_mtime
|| linkunlink
) {
2242 mds
->locker
->mark_updated_scatterlock(&pin
->filelock
);
2243 mut
->ls
->dirty_dirfrag_dir
.push_back(&pin
->item_dirty_dirfrag_dir
);
2244 mut
->add_updated_lock(&pin
->filelock
);
2248 if (!mut
->wrlocks
.count(&pin
->versionlock
))
2249 mds
->locker
->local_wrlock_grab(&pin
->versionlock
, mut
);
2251 assert(mut
->wrlocks
.count(&pin
->nestlock
) ||
2254 pin
->last_dirstat_prop
= mut
->get_mds_stamp();
2258 mut
->add_projected_inode(pin
);
2259 lsi
.push_front(pin
);
2261 pin
->pre_cow_old_inode(); // avoid cow mayhem!
2263 inode_t
*pi
= pin
->project_inode();
2264 pi
->version
= pin
->pre_dirty();
2267 if (do_parent_mtime
|| linkunlink
) {
2268 dout(20) << "predirty_journal_parents add_delta " << pf
->fragstat
<< dendl
;
2269 dout(20) << "predirty_journal_parents - " << pf
->accounted_fragstat
<< dendl
;
2270 bool touched_mtime
= false, touched_chattr
= false;
2271 pi
->dirstat
.add_delta(pf
->fragstat
, pf
->accounted_fragstat
, &touched_mtime
, &touched_chattr
);
2272 pf
->accounted_fragstat
= pf
->fragstat
;
2274 pi
->mtime
= pi
->ctime
= pi
->dirstat
.mtime
;
2276 pi
->change_attr
= pi
->dirstat
.change_attr
;
2277 dout(20) << "predirty_journal_parents gives " << pi
->dirstat
<< " on " << *pin
<< dendl
;
2279 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2280 if (pi
->dirstat
.size() < 0)
2281 assert(!"negative dirstat size" == g_conf
->mds_verify_scatter
);
2282 if (pi
->dirstat
.size() != pf
->fragstat
.size()) {
2283 mds
->clog
->error() << "unmatched fragstat size on single dirfrag "
2284 << parent
->dirfrag() << ", inode has " << pi
->dirstat
2285 << ", dirfrag has " << pf
->fragstat
;
2287 // trust the dirfrag for now
2288 pi
->dirstat
= pf
->fragstat
;
2290 assert(!"unmatched fragstat size" == g_conf
->mds_verify_scatter
);
2296 * the rule here is to follow the _oldest_ parent with dirty rstat
2297 * data. if we don't propagate all data, we add ourselves to the
2298 * nudge list. that way all rstat data will (eventually) get
2299 * pushed up the tree.
2301 * actually, no. for now, silently drop rstats for old parents. we need
2302 * hard link backpointers to do the above properly.
2308 parentdn
= pin
->get_projected_parent_dn();
2312 dout(10) << "predirty_journal_parents frag->inode on " << *parent
<< dendl
;
2314 // first, if the frag is stale, bring it back in sync.
2315 parent
->resync_accounted_rstat();
2317 if (g_conf
->mds_snap_rstat
) {
2318 for (compact_map
<snapid_t
,old_rstat_t
>::iterator p
= parent
->dirty_old_rstat
.begin();
2319 p
!= parent
->dirty_old_rstat
.end();
2321 project_rstat_frag_to_inode(p
->second
.rstat
, p
->second
.accounted_rstat
, p
->second
.first
,
2322 p
->first
, pin
, true);//false);
2324 parent
->dirty_old_rstat
.clear();
2325 project_rstat_frag_to_inode(pf
->rstat
, pf
->accounted_rstat
, parent
->first
, CEPH_NOSNAP
, pin
, true);//false);
2327 pf
->accounted_rstat
= pf
->rstat
;
2329 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2330 if (pi
->rstat
.rbytes
!= pf
->rstat
.rbytes
) {
2331 mds
->clog
->error() << "unmatched rstat rbytes on single dirfrag "
2332 << parent
->dirfrag() << ", inode has " << pi
->rstat
2333 << ", dirfrag has " << pf
->rstat
;
2335 // trust the dirfrag for now
2336 pi
->rstat
= pf
->rstat
;
2338 assert(!"unmatched rstat rbytes" == g_conf
->mds_verify_scatter
);
2342 parent
->check_rstats();
2343 broadcast_quota_to_client(pin
);
2346 parent
= parentdn
->get_dir();
2348 do_parent_mtime
= false;
2353 // now, stick it in the blob
2355 assert(parent
->is_auth());
2356 blob
->add_dir_context(parent
);
2357 blob
->add_dir(parent
, true);
2358 for (list
<CInode
*>::iterator p
= lsi
.begin();
2362 journal_dirty_inode(mut
.get(), blob
, cur
);
2371 // ===================================
2376 * some handlers for master requests with slaves. we need to make
2377 * sure slaves journal commits before we forget we mastered them and
2378 * remove them from the uncommitted_masters map (used during recovery
2379 * to commit|abort slaves).
2381 struct C_MDC_CommittedMaster
: public MDCacheLogContext
{
2383 C_MDC_CommittedMaster(MDCache
*s
, metareqid_t r
) : MDCacheLogContext(s
), reqid(r
) {}
2384 void finish(int r
) override
{
2385 mdcache
->_logged_master_commit(reqid
);
2389 void MDCache::log_master_commit(metareqid_t reqid
)
2391 dout(10) << "log_master_commit " << reqid
<< dendl
;
2392 uncommitted_masters
[reqid
].committing
= true;
2393 mds
->mdlog
->start_submit_entry(new ECommitted(reqid
),
2394 new C_MDC_CommittedMaster(this, reqid
));
2397 void MDCache::_logged_master_commit(metareqid_t reqid
)
2399 dout(10) << "_logged_master_commit " << reqid
<< dendl
;
2400 assert(uncommitted_masters
.count(reqid
));
2401 uncommitted_masters
[reqid
].ls
->uncommitted_masters
.erase(reqid
);
2402 mds
->queue_waiters(uncommitted_masters
[reqid
].waiters
);
2403 uncommitted_masters
.erase(reqid
);
2408 void MDCache::committed_master_slave(metareqid_t r
, mds_rank_t from
)
2410 dout(10) << "committed_master_slave mds." << from
<< " on " << r
<< dendl
;
2411 assert(uncommitted_masters
.count(r
));
2412 uncommitted_masters
[r
].slaves
.erase(from
);
2413 if (!uncommitted_masters
[r
].recovering
&& uncommitted_masters
[r
].slaves
.empty())
2414 log_master_commit(r
);
2417 void MDCache::logged_master_update(metareqid_t reqid
)
2419 dout(10) << "logged_master_update " << reqid
<< dendl
;
2420 assert(uncommitted_masters
.count(reqid
));
2421 uncommitted_masters
[reqid
].safe
= true;
2422 if (pending_masters
.count(reqid
)) {
2423 pending_masters
.erase(reqid
);
2424 if (pending_masters
.empty())
2425 process_delayed_resolve();
2430 * Master may crash after receiving all slaves' commit acks, but before journalling
2431 * the final commit. Slaves may crash after journalling the slave commit, but before
2432 * sending commit ack to the master. Commit masters with no uncommitted slave when
2435 void MDCache::finish_committed_masters()
2437 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
2438 p
!= uncommitted_masters
.end();
2440 p
->second
.recovering
= false;
2441 if (!p
->second
.committing
&& p
->second
.slaves
.empty()) {
2442 dout(10) << "finish_committed_masters " << p
->first
<< dendl
;
2443 log_master_commit(p
->first
);
2449 * at end of resolve... we must journal a commit|abort for all slave
2450 * updates, before moving on.
2452 * this is so that the master can safely journal ECommitted on ops it
2453 * masters when it reaches up:active (all other recovering nodes must
2454 * complete resolve before that happens).
2456 struct C_MDC_SlaveCommit
: public MDCacheLogContext
{
2459 C_MDC_SlaveCommit(MDCache
*c
, int f
, metareqid_t r
) : MDCacheLogContext(c
), from(f
), reqid(r
) {}
2460 void finish(int r
) override
{
2461 mdcache
->_logged_slave_commit(from
, reqid
);
2465 void MDCache::_logged_slave_commit(mds_rank_t from
, metareqid_t reqid
)
2467 dout(10) << "_logged_slave_commit from mds." << from
<< " " << reqid
<< dendl
;
2470 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(reqid
, 0, MMDSSlaveRequest::OP_COMMITTED
);
2471 mds
->send_message_mds(req
, from
);
2479 // ====================================================================
2480 // import map, recovery
2482 void MDCache::_move_subtree_map_bound(dirfrag_t df
, dirfrag_t oldparent
, dirfrag_t newparent
,
2483 map
<dirfrag_t
,vector
<dirfrag_t
> >& subtrees
)
2485 if (subtrees
.count(oldparent
)) {
2486 vector
<dirfrag_t
>& v
= subtrees
[oldparent
];
2487 dout(10) << " removing " << df
<< " from " << oldparent
<< " bounds " << v
<< dendl
;
2488 for (vector
<dirfrag_t
>::iterator it
= v
.begin(); it
!= v
.end(); ++it
)
2494 if (subtrees
.count(newparent
)) {
2495 vector
<dirfrag_t
>& v
= subtrees
[newparent
];
2496 dout(10) << " adding " << df
<< " to " << newparent
<< " bounds " << v
<< dendl
;
2501 ESubtreeMap
*MDCache::create_subtree_map()
2503 dout(10) << "create_subtree_map " << num_subtrees() << " subtrees, "
2504 << num_subtrees_fullauth() << " fullauth"
2509 ESubtreeMap
*le
= new ESubtreeMap();
2510 mds
->mdlog
->_start_entry(le
);
2512 map
<dirfrag_t
, CDir
*> dirs_to_add
;
2515 CDir
* mydir
= myin
->get_dirfrag(frag_t());
2516 dirs_to_add
[mydir
->dirfrag()] = mydir
;
2519 // include all auth subtrees, and their bounds.
2520 // and a spanning tree to tie it to the root.
2521 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
2522 p
!= subtrees
.end();
2524 CDir
*dir
= p
->first
;
2526 // journal subtree as "ours" if we are
2529 // me, !me (may be importing and ambiguous!)
2533 if (dir
->get_dir_auth().first
!= mds
->get_nodeid())
2536 if (migrator
->is_ambiguous_import(dir
->dirfrag()) ||
2537 my_ambiguous_imports
.count(dir
->dirfrag())) {
2538 dout(15) << " ambig subtree " << *dir
<< dendl
;
2539 le
->ambiguous_subtrees
.insert(dir
->dirfrag());
2541 dout(15) << " subtree " << *dir
<< dendl
;
2544 dirs_to_add
[dir
->dirfrag()] = dir
;
2545 le
->subtrees
[dir
->dirfrag()].clear();
2549 for (set
<CDir
*>::iterator q
= p
->second
.begin();
2550 q
!= p
->second
.end();
2553 dout(15) << " subtree bound " << *bound
<< dendl
;
2554 dirs_to_add
[bound
->dirfrag()] = bound
;
2555 le
->subtrees
[dir
->dirfrag()].push_back(bound
->dirfrag());
2559 // apply projected renames
2560 for (map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.begin();
2561 p
!= projected_subtree_renames
.end();
2563 for (list
<pair
<CDir
*,CDir
*> >::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
2564 CInode
*diri
= p
->first
;
2565 CDir
*olddir
= q
->first
;
2566 CDir
*newdir
= q
->second
;
2567 dout(10) << " adjusting for projected rename of " << *diri
<< " to " << *newdir
<< dendl
;
2570 diri
->get_dirfrags(dfls
);
2571 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
2573 dout(10) << "dirfrag " << dir
->dirfrag() << " " << *dir
<< dendl
;
2574 CDir
*oldparent
= get_projected_subtree_root(olddir
);
2575 dout(10) << " old parent " << oldparent
->dirfrag() << " " << *oldparent
<< dendl
;
2576 CDir
*newparent
= get_projected_subtree_root(newdir
);
2577 dout(10) << " new parent " << newparent
->dirfrag() << " " << *newparent
<< dendl
;
2579 if (oldparent
== newparent
) {
2580 dout(10) << "parent unchanged for " << dir
->dirfrag() << " at "
2581 << oldparent
->dirfrag() << dendl
;
2585 if (dir
->is_subtree_root()) {
2586 if (le
->subtrees
.count(newparent
->dirfrag()) &&
2587 oldparent
->get_dir_auth() != newparent
->get_dir_auth())
2588 dirs_to_add
[dir
->dirfrag()] = dir
;
2589 // children are fine. change parent.
2590 _move_subtree_map_bound(dir
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2595 if (oldparent
->get_dir_auth() != newparent
->get_dir_auth()) {
2596 dout(10) << " creating subtree for " << dir
->dirfrag() << dendl
;
2597 // if oldparent is auth, subtree is mine; include it.
2598 if (le
->subtrees
.count(oldparent
->dirfrag())) {
2599 dirs_to_add
[dir
->dirfrag()] = dir
;
2600 le
->subtrees
[dir
->dirfrag()].clear();
2602 // if newparent is auth, subtree is a new bound
2603 if (le
->subtrees
.count(newparent
->dirfrag())) {
2604 dirs_to_add
[dir
->dirfrag()] = dir
;
2605 le
->subtrees
[newparent
->dirfrag()].push_back(dir
->dirfrag()); // newparent is auth; new bound
2610 // see if any old bounds move to the new parent.
2611 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
2612 p
!= subtrees
[oldparent
].end();
2615 if (dir
->contains(bound
->get_parent_dir()))
2616 _move_subtree_map_bound(bound
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2624 // simplify the journaled map. our in memory map may have more
2625 // subtrees than needed due to migrations that are just getting
2626 // started or just completing. but on replay, the "live" map will
2627 // be simple and we can do a straight comparison.
2628 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= le
->subtrees
.begin(); p
!= le
->subtrees
.end(); ++p
) {
2629 if (le
->ambiguous_subtrees
.count(p
->first
))
2632 while (i
< p
->second
.size()) {
2633 dirfrag_t b
= p
->second
[i
];
2634 if (le
->subtrees
.count(b
) &&
2635 le
->ambiguous_subtrees
.count(b
) == 0) {
2636 vector
<dirfrag_t
>& bb
= le
->subtrees
[b
];
2637 dout(10) << "simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2638 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2639 p
->second
.push_back(*r
);
2640 dirs_to_add
.erase(b
);
2641 le
->subtrees
.erase(b
);
2642 p
->second
.erase(p
->second
.begin() + i
);
2649 for (auto p
: dirs_to_add
) {
2650 CDir
*dir
= p
.second
;
2651 le
->metablob
.add_dir_context(dir
, EMetaBlob::TO_ROOT
);
2652 le
->metablob
.add_dir(dir
, false);
2655 dout(15) << " subtrees " << le
->subtrees
<< dendl
;
2656 dout(15) << " ambiguous_subtrees " << le
->ambiguous_subtrees
<< dendl
;
2658 //le->metablob.print(cout);
2659 le
->expire_pos
= mds
->mdlog
->journaler
->get_expire_pos();
2663 void MDCache::dump_resolve_status(Formatter
*f
) const
2665 f
->open_object_section("resolve_status");
2666 f
->dump_stream("resolve_gather") << resolve_gather
;
2667 f
->dump_stream("resolve_ack_gather") << resolve_gather
;
2671 void MDCache::resolve_start(MDSInternalContext
*resolve_done_
)
2673 dout(10) << "resolve_start" << dendl
;
2674 assert(!resolve_done
);
2675 resolve_done
.reset(resolve_done_
);
2677 if (mds
->mdsmap
->get_root() != mds
->get_nodeid()) {
2678 // if we don't have the root dir, adjust it to UNKNOWN. during
2679 // resolve we want mds0 to explicit claim the portion of it that
2680 // it owns, so that anything beyond its bounds get left as
2682 CDir
*rootdir
= root
->get_dirfrag(frag_t());
2684 adjust_subtree_auth(rootdir
, CDIR_AUTH_UNKNOWN
);
2686 resolve_gather
= recovery_set
;
2689 void MDCache::send_resolves()
2691 send_slave_resolves();
2692 if (!resolve_ack_gather
.empty()) {
2693 dout(10) << "send_resolves still waiting for resolve ack from ("
2694 << resolve_ack_gather
<< ")" << dendl
;
2697 if (!need_resolve_rollback
.empty()) {
2698 dout(10) << "send_resolves still waiting for rollback to commit on ("
2699 << need_resolve_rollback
<< ")" << dendl
;
2702 send_subtree_resolves();
2705 void MDCache::send_slave_resolves()
2707 dout(10) << "send_slave_resolves" << dendl
;
2709 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2711 if (mds
->is_resolve()) {
2712 for (map
<mds_rank_t
, map
<metareqid_t
, MDSlaveUpdate
*> >::iterator p
= uncommitted_slave_updates
.begin();
2713 p
!= uncommitted_slave_updates
.end();
2715 resolves
[p
->first
] = new MMDSResolve
;
2716 for (map
<metareqid_t
, MDSlaveUpdate
*>::iterator q
= p
->second
.begin();
2717 q
!= p
->second
.end();
2719 dout(10) << " including uncommitted " << q
->first
<< dendl
;
2720 resolves
[p
->first
]->add_slave_request(q
->first
, false);
2724 set
<mds_rank_t
> resolve_set
;
2725 mds
->mdsmap
->get_mds_set(resolve_set
, MDSMap::STATE_RESOLVE
);
2726 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2727 p
!= active_requests
.end();
2729 MDRequestRef
& mdr
= p
->second
;
2730 if (!mdr
->is_slave())
2732 if (!mdr
->slave_did_prepare() && !mdr
->committing
) {
2735 mds_rank_t master
= mdr
->slave_to_mds
;
2736 if (resolve_set
.count(master
) || is_ambiguous_slave_update(p
->first
, master
)) {
2737 dout(10) << " including uncommitted " << *mdr
<< dendl
;
2738 if (!resolves
.count(master
))
2739 resolves
[master
] = new MMDSResolve
;
2740 if (!mdr
->committing
&&
2741 mdr
->has_more() && mdr
->more()->is_inode_exporter
) {
2742 // re-send cap exports
2743 CInode
*in
= mdr
->more()->rename_inode
;
2744 map
<client_t
, Capability::Export
> cap_map
;
2745 in
->export_client_caps(cap_map
);
2747 ::encode(in
->ino(), bl
);
2748 ::encode(cap_map
, bl
);
2749 resolves
[master
]->add_slave_request(p
->first
, bl
);
2751 resolves
[master
]->add_slave_request(p
->first
, mdr
->committing
);
2757 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2758 p
!= resolves
.end();
2760 dout(10) << "sending slave resolve to mds." << p
->first
<< dendl
;
2761 mds
->send_message_mds(p
->second
, p
->first
);
2762 resolve_ack_gather
.insert(p
->first
);
2766 void MDCache::send_subtree_resolves()
2768 dout(10) << "send_subtree_resolves" << dendl
;
2770 if (migrator
->is_exporting() || migrator
->is_importing()) {
2771 dout(7) << "send_subtree_resolves waiting, imports/exports still in progress" << dendl
;
2772 migrator
->show_importing();
2773 migrator
->show_exporting();
2774 resolves_pending
= true;
2778 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2779 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
2780 p
!= recovery_set
.end();
2782 if (*p
== mds
->get_nodeid())
2784 if (mds
->is_resolve() || mds
->mdsmap
->is_resolve(*p
))
2785 resolves
[*p
] = new MMDSResolve
;
2788 map
<dirfrag_t
, vector
<dirfrag_t
> > my_subtrees
;
2789 map
<dirfrag_t
, vector
<dirfrag_t
> > my_ambig_imports
;
2792 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
2793 p
!= subtrees
.end();
2795 CDir
*dir
= p
->first
;
2797 // only our subtrees
2798 if (dir
->authority().first
!= mds
->get_nodeid())
2801 if (mds
->is_resolve() && my_ambiguous_imports
.count(dir
->dirfrag()))
2802 continue; // we'll add it below
2804 if (migrator
->is_ambiguous_import(dir
->dirfrag())) {
2805 // ambiguous (mid-import)
2807 get_subtree_bounds(dir
, bounds
);
2808 vector
<dirfrag_t
> dfls
;
2809 for (set
<CDir
*>::iterator q
= bounds
.begin(); q
!= bounds
.end(); ++q
)
2810 dfls
.push_back((*q
)->dirfrag());
2812 my_ambig_imports
[dir
->dirfrag()] = dfls
;
2813 dout(10) << " ambig " << dir
->dirfrag() << " " << dfls
<< dendl
;
2816 for (map
<mds_rank_t
, MMDSResolve
*>::iterator q
= resolves
.begin();
2817 q
!= resolves
.end();
2819 resolves
[q
->first
]->add_subtree(dir
->dirfrag());
2821 vector
<dirfrag_t
> dfls
;
2822 for (set
<CDir
*>::iterator q
= subtrees
[dir
].begin();
2823 q
!= subtrees
[dir
].end();
2826 dfls
.push_back(bound
->dirfrag());
2829 my_subtrees
[dir
->dirfrag()] = dfls
;
2830 dout(10) << " claim " << dir
->dirfrag() << " " << dfls
<< dendl
;
2835 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
2836 p
!= my_ambiguous_imports
.end();
2838 my_ambig_imports
[p
->first
] = p
->second
;
2839 dout(10) << " ambig " << p
->first
<< " " << p
->second
<< dendl
;
2842 // simplify the claimed subtree.
2843 for (auto p
= my_subtrees
.begin(); p
!= my_subtrees
.end(); ++p
) {
2845 while (i
< p
->second
.size()) {
2846 dirfrag_t b
= p
->second
[i
];
2847 if (my_subtrees
.count(b
)) {
2848 vector
<dirfrag_t
>& bb
= my_subtrees
[b
];
2849 dout(10) << " simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2850 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2851 p
->second
.push_back(*r
);
2852 my_subtrees
.erase(b
);
2853 p
->second
.erase(p
->second
.begin() + i
);
2861 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2862 p
!= resolves
.end();
2864 MMDSResolve
* m
= p
->second
;
2865 m
->subtrees
= my_subtrees
;
2866 m
->ambiguous_imports
= my_ambig_imports
;
2867 dout(10) << "sending subtee resolve to mds." << p
->first
<< dendl
;
2868 mds
->send_message_mds(m
, p
->first
);
2870 resolves_pending
= false;
2873 void MDCache::handle_mds_failure(mds_rank_t who
)
2875 dout(7) << "handle_mds_failure mds." << who
<< dendl
;
2877 dout(1) << "handle_mds_failure mds." << who
<< " : recovery peers are " << recovery_set
<< dendl
;
2879 resolve_gather
.insert(who
);
2880 discard_delayed_resolve(who
);
2881 ambiguous_slave_updates
.erase(who
);
2883 rejoin_gather
.insert(who
);
2884 rejoin_sent
.erase(who
); // i need to send another
2885 rejoin_ack_sent
.erase(who
); // i need to send another
2886 rejoin_ack_gather
.erase(who
); // i'll need/get another.
2888 dout(10) << " resolve_gather " << resolve_gather
<< dendl
;
2889 dout(10) << " resolve_ack_gather " << resolve_ack_gather
<< dendl
;
2890 dout(10) << " rejoin_sent " << rejoin_sent
<< dendl
;
2891 dout(10) << " rejoin_gather " << rejoin_gather
<< dendl
;
2892 dout(10) << " rejoin_ack_gather " << rejoin_ack_gather
<< dendl
;
2895 // tell the migrator too.
2896 migrator
->handle_mds_failure_or_stop(who
);
2898 // tell the balancer too.
2899 mds
->balancer
->handle_mds_failure(who
);
2901 // clean up any requests slave to/from this node
2902 list
<MDRequestRef
> finish
;
2903 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2904 p
!= active_requests
.end();
2906 MDRequestRef
& mdr
= p
->second
;
2907 // slave to the failed node?
2908 if (mdr
->slave_to_mds
== who
) {
2909 if (mdr
->slave_did_prepare()) {
2910 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2911 if (is_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
))
2912 remove_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2914 if (!mdr
->more()->waiting_on_slave
.empty()) {
2915 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2916 // will rollback, no need to wait
2917 if (mdr
->slave_request
) {
2918 mdr
->slave_request
->put();
2919 mdr
->slave_request
= 0;
2921 mdr
->more()->waiting_on_slave
.clear();
2923 } else if (!mdr
->committing
) {
2924 dout(10) << " slave request " << *mdr
<< " has no prepare, finishing up" << dendl
;
2925 if (mdr
->slave_request
|| mdr
->slave_rolling_back())
2926 mdr
->aborted
= true;
2928 finish
.push_back(mdr
);
2932 if (mdr
->is_slave() && mdr
->slave_did_prepare()) {
2933 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2934 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2935 dout(10) << " slave request " << *mdr
<< " no longer need rename notity ack from mds."
2937 mdr
->more()->waiting_on_slave
.erase(who
);
2938 if (mdr
->more()->waiting_on_slave
.empty() && mdr
->slave_request
)
2939 mds
->queue_waiter(new C_MDS_RetryRequest(this, mdr
));
2942 if (mdr
->more()->srcdn_auth_mds
== who
&&
2943 mds
->mdsmap
->is_clientreplay_or_active_or_stopping(mdr
->slave_to_mds
)) {
2944 // rename srcdn's auth mds failed, resolve even I'm a survivor.
2945 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2946 add_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2948 } else if (mdr
->slave_request
) {
2949 MMDSSlaveRequest
*slave_req
= mdr
->slave_request
;
2950 // FIXME: Slave rename request can arrive after we notice mds failure.
2951 // This can cause mds to crash (does not affect integrity of FS).
2952 if (slave_req
->get_op() == MMDSSlaveRequest::OP_RENAMEPREP
&&
2953 slave_req
->srcdn_auth
== who
)
2954 slave_req
->mark_interrupted();
2957 // failed node is slave?
2958 if (mdr
->is_master() && !mdr
->committing
) {
2959 if (mdr
->more()->srcdn_auth_mds
== who
) {
2960 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2961 << who
<< " to recover" << dendl
;
2962 assert(mdr
->more()->witnessed
.count(who
) == 0);
2963 if (mdr
->more()->is_ambiguous_auth
)
2964 mdr
->clear_ambiguous_auth();
2965 // rename srcdn's auth mds failed, all witnesses will rollback
2966 mdr
->more()->witnessed
.clear();
2967 pending_masters
.erase(p
->first
);
2970 if (mdr
->more()->witnessed
.count(who
)) {
2971 mds_rank_t srcdn_auth
= mdr
->more()->srcdn_auth_mds
;
2972 if (srcdn_auth
>= 0 && mdr
->more()->waiting_on_slave
.count(srcdn_auth
)) {
2973 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2974 << mdr
->more()->srcdn_auth_mds
<< " to reply" << dendl
;
2975 // waiting for the slave (rename srcdn's auth mds), delay sending resolve ack
2976 // until either the request is committing or the slave also fails.
2977 assert(mdr
->more()->waiting_on_slave
.size() == 1);
2978 pending_masters
.insert(p
->first
);
2980 dout(10) << " master request " << *mdr
<< " no longer witnessed by slave mds."
2981 << who
<< " to recover" << dendl
;
2982 if (srcdn_auth
>= 0)
2983 assert(mdr
->more()->witnessed
.count(srcdn_auth
) == 0);
2985 // discard this peer's prepare (if any)
2986 mdr
->more()->witnessed
.erase(who
);
2990 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2991 dout(10) << " master request " << *mdr
<< " waiting for slave mds." << who
2992 << " to recover" << dendl
;
2993 // retry request when peer recovers
2994 mdr
->more()->waiting_on_slave
.erase(who
);
2995 if (mdr
->more()->waiting_on_slave
.empty())
2996 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(this, mdr
));
2999 if (mdr
->locking
&& mdr
->locking_target_mds
== who
)
3000 mdr
->finish_locking(mdr
->locking
);
3004 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
3005 p
!= uncommitted_masters
.end();
3007 // The failed MDS may have already committed the slave update
3008 if (p
->second
.slaves
.count(who
)) {
3009 p
->second
.recovering
= true;
3010 p
->second
.slaves
.erase(who
);
3014 while (!finish
.empty()) {
3015 dout(10) << "cleaning up slave request " << *finish
.front() << dendl
;
3016 request_finish(finish
.front());
3020 kick_find_ino_peers(who
);
3021 kick_open_ino_peers(who
);
3023 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
3024 p
!= fragments
.end(); ) {
3025 dirfrag_t df
= p
->first
;
3026 fragment_info_t
& info
= p
->second
;
3028 if (info
.is_fragmenting())
3030 dout(10) << "cancelling fragment " << df
<< " bit " << info
.bits
<< dendl
;
3032 info
.dirs
.swap(dirs
);
3033 fragments
.erase(df
);
3034 fragment_unmark_unfreeze_dirs(dirs
);
3037 // MDCache::shutdown_export_strays() always exports strays to mds.0
3038 if (who
== mds_rank_t(0))
3039 shutdown_exported_strays
.clear();
3045 * handle_mds_recovery - called on another node's transition
3046 * from resolve -> active.
3048 void MDCache::handle_mds_recovery(mds_rank_t who
)
3050 dout(7) << "handle_mds_recovery mds." << who
<< dendl
;
3052 // exclude all discover waiters. kick_discovers() will do the job
3053 static const uint64_t i_mask
= CInode::WAIT_ANY_MASK
& ~CInode::WAIT_DIR
;
3054 static const uint64_t d_mask
= CDir::WAIT_ANY_MASK
& ~CDir::WAIT_DENTRY
;
3056 list
<MDSInternalContextBase
*> waiters
;
3058 // wake up any waiters in their subtrees
3059 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3060 p
!= subtrees
.end();
3062 CDir
*dir
= p
->first
;
3064 if (dir
->authority().first
!= who
||
3065 dir
->authority().second
== mds
->get_nodeid())
3067 assert(!dir
->is_auth());
3073 while (!q
.empty()) {
3074 CDir
*d
= q
.front();
3076 d
->take_waiting(d_mask
, waiters
);
3078 // inode waiters too
3079 for (CDir::map_t::iterator p
= d
->items
.begin();
3080 p
!= d
->items
.end();
3082 CDentry
*dn
= p
->second
;
3083 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3084 if (dnl
->is_primary()) {
3085 dnl
->get_inode()->take_waiting(i_mask
, waiters
);
3089 dnl
->get_inode()->get_dirfrags(ls
);
3090 for (list
<CDir
*>::iterator p
= ls
.begin();
3094 if (!subdir
->is_subtree_root())
3095 q
.push_back(subdir
);
3102 kick_open_ino_peers(who
);
3103 kick_find_ino_peers(who
);
3106 mds
->queue_waiters(waiters
);
3109 void MDCache::set_recovery_set(set
<mds_rank_t
>& s
)
3111 dout(7) << "set_recovery_set " << s
<< dendl
;
3117 * during resolve state, we share resolves to determine who
3118 * is authoritative for which trees. we expect to get an resolve
3119 * from _everyone_ in the recovery_set (the mds cluster at the time of
3120 * the first failure).
3122 * This functions puts the passed message before returning
3124 void MDCache::handle_resolve(MMDSResolve
*m
)
3126 dout(7) << "handle_resolve from " << m
->get_source() << dendl
;
3127 mds_rank_t from
= mds_rank_t(m
->get_source().num());
3129 if (mds
->get_state() < MDSMap::STATE_RESOLVE
) {
3130 if (mds
->get_want_state() == CEPH_MDS_STATE_RESOLVE
) {
3131 mds
->wait_for_resolve(new C_MDS_RetryMessage(mds
, m
));
3134 // wait until we reach the resolve stage!
3139 discard_delayed_resolve(from
);
3141 // ambiguous slave requests?
3142 if (!m
->slave_requests
.empty()) {
3143 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3144 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3145 if (uncommitted_masters
.count(p
->first
) && !uncommitted_masters
[p
->first
].safe
) {
3146 assert(!p
->second
.committing
);
3147 pending_masters
.insert(p
->first
);
3151 if (!pending_masters
.empty()) {
3152 dout(10) << " still have pending updates, delay processing slave resolve" << dendl
;
3153 delayed_resolve
[from
] = m
;
3158 MMDSResolveAck
*ack
= new MMDSResolveAck
;
3159 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3160 if (uncommitted_masters
.count(p
->first
)) { //mds->sessionmap.have_completed_request(p->first)) {
3162 if (p
->second
.committing
) {
3163 // already committing, waiting for the OP_COMMITTED slave reply
3164 dout(10) << " already committing slave request " << *p
<< " noop "<< dendl
;
3166 dout(10) << " ambiguous slave request " << *p
<< " will COMMIT" << dendl
;
3167 ack
->add_commit(p
->first
);
3169 uncommitted_masters
[p
->first
].slaves
.insert(from
); // wait for slave OP_COMMITTED before we log ECommitted
3171 if (p
->second
.inode_caps
.length() > 0) {
3172 // slave wants to export caps (rename)
3173 assert(mds
->is_resolve());
3176 map
<client_t
,Capability::Export
> cap_exports
;
3177 bufferlist::iterator q
= p
->second
.inode_caps
.begin();
3179 ::decode(cap_exports
, q
);
3181 assert(get_inode(ino
));
3183 for (map
<client_t
,Capability::Export
>::iterator q
= cap_exports
.begin();
3184 q
!= cap_exports
.end();
3186 Capability::Import
& im
= rejoin_imported_caps
[from
][ino
][q
->first
];
3187 im
.cap_id
= ++last_cap_id
; // assign a new cap ID
3189 im
.mseq
= q
->second
.mseq
;
3192 // will process these caps in rejoin stage
3193 rejoin_slave_exports
[ino
].first
= from
;
3194 rejoin_slave_exports
[ino
].second
.swap(cap_exports
);
3196 // send information of imported caps back to slave
3197 ::encode(rejoin_imported_caps
[from
][ino
], ack
->commit
[p
->first
]);
3201 dout(10) << " ambiguous slave request " << *p
<< " will ABORT" << dendl
;
3202 assert(!p
->second
.committing
);
3203 ack
->add_abort(p
->first
);
3206 mds
->send_message(ack
, m
->get_connection());
3211 if (!resolve_ack_gather
.empty() || !need_resolve_rollback
.empty()) {
3212 dout(10) << "delay processing subtree resolve" << dendl
;
3213 delayed_resolve
[from
] = m
;
3217 bool survivor
= false;
3218 // am i a surviving ambiguous importer?
3219 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3221 // check for any import success/failure (from this node)
3222 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
3223 while (p
!= my_ambiguous_imports
.end()) {
3224 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator next
= p
;
3226 CDir
*dir
= get_dirfrag(p
->first
);
3228 dout(10) << "checking ambiguous import " << *dir
<< dendl
;
3229 if (migrator
->is_importing(dir
->dirfrag()) &&
3230 migrator
->get_import_peer(dir
->dirfrag()) == from
) {
3231 assert(migrator
->get_import_state(dir
->dirfrag()) == Migrator::IMPORT_ACKING
);
3233 // check if sender claims the subtree
3234 bool claimed_by_sender
= false;
3235 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= m
->subtrees
.begin();
3236 q
!= m
->subtrees
.end();
3238 // an ambiguous import won't race with a refragmentation; it's appropriate to force here.
3239 CDir
*base
= get_force_dirfrag(q
->first
, false);
3240 if (!base
|| !base
->contains(dir
))
3241 continue; // base not dir or an ancestor of dir, clearly doesn't claim dir.
3245 get_force_dirfrag_bound_set(q
->second
, bounds
);
3246 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
3248 if (bound
->contains(dir
)) {
3249 inside
= false; // nope, bound is dir or parent of dir, not inside.
3254 claimed_by_sender
= true;
3257 my_ambiguous_imports
.erase(p
); // no longer ambiguous.
3258 if (claimed_by_sender
) {
3259 dout(7) << "ambiguous import failed on " << *dir
<< dendl
;
3260 migrator
->import_reverse(dir
);
3262 dout(7) << "ambiguous import succeeded on " << *dir
<< dendl
;
3263 migrator
->import_finish(dir
, true);
3270 // update my dir_auth values
3271 // need to do this on recoverying nodes _and_ bystanders (to resolve ambiguous
3272 // migrations between other nodes)
3273 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->subtrees
.begin();
3274 pi
!= m
->subtrees
.end();
3276 dout(10) << "peer claims " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3277 CDir
*dir
= get_force_dirfrag(pi
->first
, !survivor
);
3280 adjust_bounded_subtree_auth(dir
, pi
->second
, from
);
3281 try_subtree_merge(dir
);
3286 // note ambiguous imports too
3287 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->ambiguous_imports
.begin();
3288 pi
!= m
->ambiguous_imports
.end();
3290 dout(10) << "noting ambiguous import on " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3291 other_ambiguous_imports
[from
][pi
->first
].swap( pi
->second
);
3294 // did i get them all?
3295 resolve_gather
.erase(from
);
3297 maybe_resolve_finish();
3302 void MDCache::process_delayed_resolve()
3304 dout(10) << "process_delayed_resolve" << dendl
;
3305 map
<mds_rank_t
, MMDSResolve
*> tmp
;
3306 tmp
.swap(delayed_resolve
);
3307 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= tmp
.begin(); p
!= tmp
.end(); ++p
)
3308 handle_resolve(p
->second
);
3311 void MDCache::discard_delayed_resolve(mds_rank_t who
)
3313 if (delayed_resolve
.count(who
)) {
3314 delayed_resolve
[who
]->put();
3315 delayed_resolve
.erase(who
);
3319 void MDCache::maybe_resolve_finish()
3321 assert(resolve_ack_gather
.empty());
3322 assert(need_resolve_rollback
.empty());
3324 if (!resolve_gather
.empty()) {
3325 dout(10) << "maybe_resolve_finish still waiting for resolves ("
3326 << resolve_gather
<< ")" << dendl
;
3330 dout(10) << "maybe_resolve_finish got all resolves+resolve_acks, done." << dendl
;
3331 disambiguate_my_imports();
3332 finish_committed_masters();
3335 assert(mds
->is_resolve());
3336 trim_unlinked_inodes();
3337 recalc_auth_bits(false);
3338 resolve_done
.release()->complete(0);
3340 maybe_send_pending_rejoins();
3344 /* This functions puts the passed message before returning */
3345 void MDCache::handle_resolve_ack(MMDSResolveAck
*ack
)
3347 dout(10) << "handle_resolve_ack " << *ack
<< " from " << ack
->get_source() << dendl
;
3348 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
3350 if (!resolve_ack_gather
.count(from
) ||
3351 mds
->mdsmap
->get_state(from
) < MDSMap::STATE_RESOLVE
) {
3356 if (ambiguous_slave_updates
.count(from
)) {
3357 assert(mds
->mdsmap
->is_clientreplay_or_active_or_stopping(from
));
3358 assert(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3361 for (map
<metareqid_t
, bufferlist
>::iterator p
= ack
->commit
.begin();
3362 p
!= ack
->commit
.end();
3364 dout(10) << " commit on slave " << p
->first
<< dendl
;
3366 if (ambiguous_slave_updates
.count(from
)) {
3367 remove_ambiguous_slave_update(p
->first
, from
);
3371 if (mds
->is_resolve()) {
3373 MDSlaveUpdate
*su
= get_uncommitted_slave_update(p
->first
, from
);
3377 mds
->mdlog
->start_submit_entry(new ESlaveUpdate(mds
->mdlog
, "unknown", p
->first
, from
,
3378 ESlaveUpdate::OP_COMMIT
, su
->origop
),
3379 new C_MDC_SlaveCommit(this, from
, p
->first
));
3380 mds
->mdlog
->flush();
3382 finish_uncommitted_slave_update(p
->first
, from
);
3384 MDRequestRef mdr
= request_get(p
->first
);
3385 // information about master imported caps
3386 if (p
->second
.length() > 0)
3387 mdr
->more()->inode_import
.claim(p
->second
);
3389 assert(mdr
->slave_request
== 0); // shouldn't be doing anything!
3390 request_finish(mdr
);
3394 for (vector
<metareqid_t
>::iterator p
= ack
->abort
.begin();
3395 p
!= ack
->abort
.end();
3397 dout(10) << " abort on slave " << *p
<< dendl
;
3399 if (mds
->is_resolve()) {
3400 MDSlaveUpdate
*su
= get_uncommitted_slave_update(*p
, from
);
3403 // perform rollback (and journal a rollback entry)
3404 // note: this will hold up the resolve a bit, until the rollback entries journal.
3405 MDRequestRef null_ref
;
3406 switch (su
->origop
) {
3407 case ESlaveUpdate::LINK
:
3408 mds
->server
->do_link_rollback(su
->rollback
, from
, null_ref
);
3410 case ESlaveUpdate::RENAME
:
3411 mds
->server
->do_rename_rollback(su
->rollback
, from
, null_ref
);
3413 case ESlaveUpdate::RMDIR
:
3414 mds
->server
->do_rmdir_rollback(su
->rollback
, from
, null_ref
);
3420 MDRequestRef mdr
= request_get(*p
);
3421 mdr
->aborted
= true;
3422 if (mdr
->slave_request
) {
3423 if (mdr
->slave_did_prepare()) // journaling slave prepare ?
3424 add_rollback(*p
, from
);
3426 request_finish(mdr
);
3431 if (!ambiguous_slave_updates
.count(from
))
3432 resolve_ack_gather
.erase(from
);
3433 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3434 send_subtree_resolves();
3435 process_delayed_resolve();
3441 void MDCache::add_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
, MDSlaveUpdate
*su
)
3443 assert(uncommitted_slave_updates
[master
].count(reqid
) == 0);
3444 uncommitted_slave_updates
[master
][reqid
] = su
;
3445 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
)
3446 uncommitted_slave_rename_olddir
[*p
]++;
3447 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
)
3448 uncommitted_slave_unlink
[*p
]++;
3451 void MDCache::finish_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3453 assert(uncommitted_slave_updates
[master
].count(reqid
));
3454 MDSlaveUpdate
* su
= uncommitted_slave_updates
[master
][reqid
];
3456 uncommitted_slave_updates
[master
].erase(reqid
);
3457 if (uncommitted_slave_updates
[master
].empty())
3458 uncommitted_slave_updates
.erase(master
);
3459 // discard the non-auth subtree we renamed out of
3460 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
) {
3462 map
<CInode
*, int>::iterator it
= uncommitted_slave_rename_olddir
.find(diri
);
3463 assert(it
!= uncommitted_slave_rename_olddir
.end());
3465 if (it
->second
== 0) {
3466 uncommitted_slave_rename_olddir
.erase(it
);
3468 diri
->get_dirfrags(ls
);
3469 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
3470 CDir
*root
= get_subtree_root(*q
);
3471 if (root
->get_dir_auth() == CDIR_AUTH_UNDEF
) {
3472 try_trim_non_auth_subtree(root
);
3478 assert(it
->second
> 0);
3480 // removed the inodes that were unlinked by slave update
3481 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
) {
3483 map
<CInode
*, int>::iterator it
= uncommitted_slave_unlink
.find(in
);
3484 assert(it
!= uncommitted_slave_unlink
.end());
3486 if (it
->second
== 0) {
3487 uncommitted_slave_unlink
.erase(it
);
3488 if (!in
->get_projected_parent_dn())
3489 mds
->mdcache
->remove_inode_recursive(in
);
3491 assert(it
->second
> 0);
3496 MDSlaveUpdate
* MDCache::get_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3499 MDSlaveUpdate
* su
= NULL
;
3500 if (uncommitted_slave_updates
.count(master
) &&
3501 uncommitted_slave_updates
[master
].count(reqid
)) {
3502 su
= uncommitted_slave_updates
[master
][reqid
];
3508 void MDCache::finish_rollback(metareqid_t reqid
) {
3509 assert(need_resolve_rollback
.count(reqid
));
3510 if (mds
->is_resolve())
3511 finish_uncommitted_slave_update(reqid
, need_resolve_rollback
[reqid
]);
3512 need_resolve_rollback
.erase(reqid
);
3513 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3514 send_subtree_resolves();
3515 process_delayed_resolve();
3519 void MDCache::disambiguate_other_imports()
3521 dout(10) << "disambiguate_other_imports" << dendl
;
3523 bool recovering
= !(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3524 // other nodes' ambiguous imports
3525 for (map
<mds_rank_t
, map
<dirfrag_t
, vector
<dirfrag_t
> > >::iterator p
= other_ambiguous_imports
.begin();
3526 p
!= other_ambiguous_imports
.end();
3528 mds_rank_t who
= p
->first
;
3529 dout(10) << "ambiguous imports for mds." << who
<< dendl
;
3531 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= p
->second
.begin();
3532 q
!= p
->second
.end();
3534 dout(10) << " ambiguous import " << q
->first
<< " bounds " << q
->second
<< dendl
;
3535 // an ambiguous import will not race with a refragmentation; it's appropriate to force here.
3536 CDir
*dir
= get_force_dirfrag(q
->first
, recovering
);
3539 if (dir
->is_ambiguous_auth() || // works for me_ambig or if i am a surviving bystander
3540 dir
->authority() == CDIR_AUTH_UNDEF
) { // resolving
3541 dout(10) << " mds." << who
<< " did import " << *dir
<< dendl
;
3542 adjust_bounded_subtree_auth(dir
, q
->second
, who
);
3543 try_subtree_merge(dir
);
3545 dout(10) << " mds." << who
<< " did not import " << *dir
<< dendl
;
3549 other_ambiguous_imports
.clear();
3552 void MDCache::disambiguate_my_imports()
3554 dout(10) << "disambiguate_my_imports" << dendl
;
3556 if (!mds
->is_resolve()) {
3557 assert(my_ambiguous_imports
.empty());
3561 disambiguate_other_imports();
3563 // my ambiguous imports
3564 mds_authority_t
me_ambig(mds
->get_nodeid(), mds
->get_nodeid());
3565 while (!my_ambiguous_imports
.empty()) {
3566 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= my_ambiguous_imports
.begin();
3568 CDir
*dir
= get_dirfrag(q
->first
);
3571 if (dir
->authority() != me_ambig
) {
3572 dout(10) << "ambiguous import auth known, must not be me " << *dir
<< dendl
;
3573 cancel_ambiguous_import(dir
);
3575 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, false));
3577 // subtree may have been swallowed by another node claiming dir
3579 CDir
*root
= get_subtree_root(dir
);
3581 dout(10) << " subtree root is " << *root
<< dendl
;
3582 assert(root
->dir_auth
.first
!= mds
->get_nodeid()); // no us!
3583 try_trim_non_auth_subtree(root
);
3585 dout(10) << "ambiguous import auth unclaimed, must be me " << *dir
<< dendl
;
3586 finish_ambiguous_import(q
->first
);
3587 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, true));
3590 assert(my_ambiguous_imports
.empty());
3591 mds
->mdlog
->flush();
3593 // verify all my subtrees are unambiguous!
3594 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3595 p
!= subtrees
.end();
3597 CDir
*dir
= p
->first
;
3598 if (dir
->is_ambiguous_dir_auth()) {
3599 dout(0) << "disambiguate_imports uh oh, dir_auth is still ambiguous for " << *dir
<< dendl
;
3601 assert(!dir
->is_ambiguous_dir_auth());
3608 void MDCache::add_ambiguous_import(dirfrag_t base
, const vector
<dirfrag_t
>& bounds
)
3610 assert(my_ambiguous_imports
.count(base
) == 0);
3611 my_ambiguous_imports
[base
] = bounds
;
3615 void MDCache::add_ambiguous_import(CDir
*base
, const set
<CDir
*>& bounds
)
3618 vector
<dirfrag_t
> binos
;
3619 for (set
<CDir
*>::iterator p
= bounds
.begin();
3622 binos
.push_back((*p
)->dirfrag());
3624 // note: this can get called twice if the exporter fails during recovery
3625 if (my_ambiguous_imports
.count(base
->dirfrag()))
3626 my_ambiguous_imports
.erase(base
->dirfrag());
3628 add_ambiguous_import(base
->dirfrag(), binos
);
3631 void MDCache::cancel_ambiguous_import(CDir
*dir
)
3633 dirfrag_t df
= dir
->dirfrag();
3634 assert(my_ambiguous_imports
.count(df
));
3635 dout(10) << "cancel_ambiguous_import " << df
3636 << " bounds " << my_ambiguous_imports
[df
]
3639 my_ambiguous_imports
.erase(df
);
3642 void MDCache::finish_ambiguous_import(dirfrag_t df
)
3644 assert(my_ambiguous_imports
.count(df
));
3645 vector
<dirfrag_t
> bounds
;
3646 bounds
.swap(my_ambiguous_imports
[df
]);
3647 my_ambiguous_imports
.erase(df
);
3649 dout(10) << "finish_ambiguous_import " << df
3650 << " bounds " << bounds
3652 CDir
*dir
= get_dirfrag(df
);
3655 // adjust dir_auth, import maps
3656 adjust_bounded_subtree_auth(dir
, bounds
, mds
->get_nodeid());
3657 try_subtree_merge(dir
);
3660 void MDCache::remove_inode_recursive(CInode
*in
)
3662 dout(10) << "remove_inode_recursive " << *in
<< dendl
;
3664 in
->get_dirfrags(ls
);
3665 list
<CDir
*>::iterator p
= ls
.begin();
3666 while (p
!= ls
.end()) {
3667 CDir
*subdir
= *p
++;
3669 dout(10) << " removing dirfrag " << subdir
<< dendl
;
3670 CDir::map_t::iterator q
= subdir
->items
.begin();
3671 while (q
!= subdir
->items
.end()) {
3672 CDentry
*dn
= q
->second
;
3674 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3675 if (dnl
->is_primary()) {
3676 CInode
*tin
= dnl
->get_inode();
3677 subdir
->unlink_inode(dn
, false);
3678 remove_inode_recursive(tin
);
3680 subdir
->remove_dentry(dn
);
3683 if (subdir
->is_subtree_root())
3684 remove_subtree(subdir
);
3685 in
->close_dirfrag(subdir
->dirfrag().frag
);
3690 bool MDCache::expire_recursive(
3692 map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
3694 assert(!in
->is_auth());
3696 dout(10) << __func__
<< ":" << *in
<< dendl
;
3698 // Recurse into any dirfrags beneath this inode
3700 in
->get_dirfrags(ls
);
3701 for (auto subdir
: ls
) {
3702 if (!in
->is_mdsdir() && subdir
->is_subtree_root()) {
3703 dout(10) << __func__
<< ": stray still has subtree " << *in
<< dendl
;
3707 for (auto &it
: subdir
->items
) {
3708 CDentry
*dn
= it
.second
;
3709 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3710 if (dnl
->is_primary()) {
3711 CInode
*tin
= dnl
->get_inode();
3713 /* Remote strays with linkage (i.e. hardlinks) should not be
3714 * expired, because they may be the target of
3715 * a rename() as the owning MDS shuts down */
3716 if (!tin
->is_stray() && tin
->inode
.nlink
) {
3717 dout(10) << __func__
<< ": stray still has linkage " << *tin
<< dendl
;
3721 const bool abort
= expire_recursive(tin
, expiremap
);
3726 if (dn
->lru_is_expireable()) {
3727 trim_dentry(dn
, expiremap
);
3729 dout(10) << __func__
<< ": stray dn is not expireable " << *dn
<< dendl
;
3738 void MDCache::trim_unlinked_inodes()
3740 dout(7) << "trim_unlinked_inodes" << dendl
;
3742 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
3743 p
!= inode_map
.end();
3745 CInode
*in
= p
->second
;
3746 if (in
->get_parent_dn() == NULL
&& !in
->is_base()) {
3747 dout(7) << " will trim from " << *in
<< dendl
;
3751 for (list
<CInode
*>::iterator p
= q
.begin(); p
!= q
.end(); ++p
)
3752 remove_inode_recursive(*p
);
3755 /** recalc_auth_bits()
3756 * once subtree auth is disambiguated, we need to adjust all the
3757 * auth and dirty bits in our cache before moving on.
3759 void MDCache::recalc_auth_bits(bool replay
)
3761 dout(7) << "recalc_auth_bits " << (replay
? "(replay)" : "") << dendl
;
3764 root
->inode_auth
.first
= mds
->mdsmap
->get_root();
3765 bool auth
= mds
->get_nodeid() == root
->inode_auth
.first
;
3767 root
->state_set(CInode::STATE_AUTH
);
3769 root
->state_clear(CInode::STATE_AUTH
);
3771 root
->state_set(CInode::STATE_REJOINING
);
3775 set
<CInode
*> subtree_inodes
;
3776 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3777 p
!= subtrees
.end();
3779 if (p
->first
->dir_auth
.first
== mds
->get_nodeid())
3780 subtree_inodes
.insert(p
->first
->inode
);
3783 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3784 p
!= subtrees
.end();
3786 if (p
->first
->inode
->is_mdsdir()) {
3787 CInode
*in
= p
->first
->inode
;
3788 bool auth
= in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid());
3790 in
->state_set(CInode::STATE_AUTH
);
3792 in
->state_clear(CInode::STATE_AUTH
);
3794 in
->state_set(CInode::STATE_REJOINING
);
3798 list
<CDir
*> dfq
; // dirfrag queue
3799 dfq
.push_back(p
->first
);
3801 bool auth
= p
->first
->authority().first
== mds
->get_nodeid();
3802 dout(10) << " subtree auth=" << auth
<< " for " << *p
->first
<< dendl
;
3804 while (!dfq
.empty()) {
3805 CDir
*dir
= dfq
.front();
3810 dir
->state_set(CDir::STATE_AUTH
);
3812 dir
->state_clear(CDir::STATE_AUTH
);
3814 // close empty non-auth dirfrag
3815 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0) {
3816 dir
->inode
->close_dirfrag(dir
->get_frag());
3819 dir
->state_set(CDir::STATE_REJOINING
);
3820 dir
->state_clear(CDir::STATE_COMPLETE
);
3821 if (dir
->is_dirty())
3826 // dentries in this dir
3827 for (CDir::map_t::iterator q
= dir
->items
.begin();
3828 q
!= dir
->items
.end();
3831 CDentry
*dn
= q
->second
;
3832 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3834 dn
->state_set(CDentry::STATE_AUTH
);
3836 dn
->state_clear(CDentry::STATE_AUTH
);
3838 dn
->state_set(CDentry::STATE_REJOINING
);
3844 if (dnl
->is_primary()) {
3846 CInode
*in
= dnl
->get_inode();
3848 in
->state_set(CInode::STATE_AUTH
);
3850 in
->state_clear(CInode::STATE_AUTH
);
3852 in
->state_set(CInode::STATE_REJOINING
);
3855 if (in
->is_dirty_parent())
3856 in
->clear_dirty_parent();
3857 // avoid touching scatterlocks for our subtree roots!
3858 if (subtree_inodes
.count(in
) == 0)
3859 in
->clear_scatter_dirty();
3864 in
->get_nested_dirfrags(dfq
);
3876 // ===========================================================================
3880 * notes on scatterlock recovery:
3882 * - recovering inode replica sends scatterlock data for any subtree
3883 * roots (the only ones that are possibly dirty).
3885 * - surviving auth incorporates any provided scatterlock data. any
3886 * pending gathers are then finished, as with the other lock types.
3888 * that takes care of surviving auth + (recovering replica)*.
3890 * - surviving replica sends strong_inode, which includes current
3891 * scatterlock state, AND any dirty scatterlock data. this
3892 * provides the recovering auth with everything it might need.
3894 * - recovering auth must pick initial scatterlock state based on
3895 * (weak|strong) rejoins.
3896 * - always assimilate scatterlock data (it can't hurt)
3897 * - any surviving replica in SCATTER state -> SCATTER. otherwise, SYNC.
3898 * - include base inode in ack for all inodes that saw scatterlock content
3900 * also, for scatter gather,
3902 * - auth increments {frag,r}stat.version on completion of any gather.
3904 * - auth incorporates changes in a gather _only_ if the version
3907 * - replica discards changes any time the scatterlock syncs, and
3911 void MDCache::dump_rejoin_status(Formatter
*f
) const
3913 f
->open_object_section("rejoin_status");
3914 f
->dump_stream("rejoin_gather") << rejoin_gather
;
3915 f
->dump_stream("rejoin_ack_gather") << rejoin_ack_gather
;
3916 f
->dump_unsigned("num_opening_inodes", cap_imports_num_opening
);
3920 void MDCache::rejoin_start(MDSInternalContext
*rejoin_done_
)
3922 dout(10) << "rejoin_start" << dendl
;
3923 assert(!rejoin_done
);
3924 rejoin_done
.reset(rejoin_done_
);
3926 rejoin_gather
= recovery_set
;
3927 // need finish opening cap inodes before sending cache rejoins
3928 rejoin_gather
.insert(mds
->get_nodeid());
3929 process_imported_caps();
3935 * this initiates rejoin. it shoudl be called before we get any
3936 * rejoin or rejoin_ack messages (or else mdsmap distribution is broken).
3938 * we start out by sending rejoins to everyone in the recovery set.
3940 * if we are rejoin, send for all regions in our cache.
3941 * if we are active|stopping, send only to nodes that are are rejoining.
3943 void MDCache::rejoin_send_rejoins()
3945 dout(10) << "rejoin_send_rejoins with recovery_set " << recovery_set
<< dendl
;
3947 if (rejoin_gather
.count(mds
->get_nodeid())) {
3948 dout(7) << "rejoin_send_rejoins still processing imported caps, delaying" << dendl
;
3949 rejoins_pending
= true;
3952 if (!resolve_gather
.empty()) {
3953 dout(7) << "rejoin_send_rejoins still waiting for resolves ("
3954 << resolve_gather
<< ")" << dendl
;
3955 rejoins_pending
= true;
3959 assert(!migrator
->is_importing());
3960 assert(!migrator
->is_exporting());
3962 if (!mds
->is_rejoin()) {
3963 disambiguate_other_imports();
3966 map
<mds_rank_t
, MMDSCacheRejoin
*> rejoins
;
3969 // if i am rejoining, send a rejoin to everyone.
3970 // otherwise, just send to others who are rejoining.
3971 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
3972 p
!= recovery_set
.end();
3974 if (*p
== mds
->get_nodeid()) continue; // nothing to myself!
3975 if (rejoin_sent
.count(*p
)) continue; // already sent a rejoin to this node!
3976 if (mds
->is_rejoin())
3977 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_WEAK
);
3978 else if (mds
->mdsmap
->is_rejoin(*p
))
3979 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_STRONG
);
3982 if (mds
->is_rejoin()) {
3983 map
<client_t
, set
<mds_rank_t
> > client_exports
;
3984 for (auto p
= cap_exports
.begin(); p
!= cap_exports
.end(); ++p
) {
3985 assert(cap_export_targets
.count(p
->first
));
3986 mds_rank_t target
= cap_export_targets
[p
->first
];
3987 if (rejoins
.count(target
) == 0)
3989 rejoins
[target
]->cap_exports
[p
->first
] = p
->second
;
3990 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3991 client_exports
[q
->first
].insert(target
);
3993 for (map
<client_t
, set
<mds_rank_t
> >::iterator p
= client_exports
.begin();
3994 p
!= client_exports
.end();
3996 entity_inst_t inst
= mds
->sessionmap
.get_inst(entity_name_t::CLIENT(p
->first
.v
));
3997 for (set
<mds_rank_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3998 rejoins
[*q
]->client_map
[p
->first
] = inst
;
4003 // check all subtrees
4004 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
4005 p
!= subtrees
.end();
4007 CDir
*dir
= p
->first
;
4008 assert(dir
->is_subtree_root());
4009 if (dir
->is_ambiguous_dir_auth()) {
4010 // exporter is recovering, importer is survivor.
4011 assert(rejoins
.count(dir
->authority().first
));
4012 assert(!rejoins
.count(dir
->authority().second
));
4018 continue; // skip my own regions!
4020 mds_rank_t auth
= dir
->get_dir_auth().first
;
4022 if (rejoins
.count(auth
) == 0)
4023 continue; // don't care about this node's subtrees
4025 rejoin_walk(dir
, rejoins
[auth
]);
4028 // rejoin root inodes, too
4029 for (map
<mds_rank_t
, MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4032 if (mds
->is_rejoin()) {
4034 if (p
->first
== 0 && root
) {
4035 p
->second
->add_weak_inode(root
->vino());
4036 if (root
->is_dirty_scattered()) {
4037 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4038 p
->second
->add_scatterlock_state(root
);
4041 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4043 p
->second
->add_weak_inode(in
->vino());
4047 if (p
->first
== 0 && root
) {
4048 p
->second
->add_strong_inode(root
->vino(),
4049 root
->get_replica_nonce(),
4050 root
->get_caps_wanted(),
4051 root
->filelock
.get_state(),
4052 root
->nestlock
.get_state(),
4053 root
->dirfragtreelock
.get_state());
4054 root
->state_set(CInode::STATE_REJOINING
);
4055 if (root
->is_dirty_scattered()) {
4056 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4057 p
->second
->add_scatterlock_state(root
);
4061 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4062 p
->second
->add_strong_inode(in
->vino(),
4063 in
->get_replica_nonce(),
4064 in
->get_caps_wanted(),
4065 in
->filelock
.get_state(),
4066 in
->nestlock
.get_state(),
4067 in
->dirfragtreelock
.get_state());
4068 in
->state_set(CInode::STATE_REJOINING
);
4073 if (!mds
->is_rejoin()) {
4074 // i am survivor. send strong rejoin.
4075 // note request remote_auth_pins, xlocks
4076 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
4077 p
!= active_requests
.end();
4079 MDRequestRef
& mdr
= p
->second
;
4080 if (mdr
->is_slave())
4083 for (map
<MDSCacheObject
*,mds_rank_t
>::iterator q
= mdr
->remote_auth_pins
.begin();
4084 q
!= mdr
->remote_auth_pins
.end();
4086 if (!q
->first
->is_auth()) {
4087 assert(q
->second
== q
->first
->authority().first
);
4088 if (rejoins
.count(q
->second
) == 0) continue;
4089 MMDSCacheRejoin
*rejoin
= rejoins
[q
->second
];
4091 dout(15) << " " << *mdr
<< " authpin on " << *q
->first
<< dendl
;
4092 MDSCacheObjectInfo i
;
4093 q
->first
->set_object_info(i
);
4095 rejoin
->add_inode_authpin(vinodeno_t(i
.ino
, i
.snapid
), mdr
->reqid
, mdr
->attempt
);
4097 rejoin
->add_dentry_authpin(i
.dirfrag
, i
.dname
, i
.snapid
, mdr
->reqid
, mdr
->attempt
);
4099 if (mdr
->has_more() && mdr
->more()->is_remote_frozen_authpin
&&
4100 mdr
->more()->rename_inode
== q
->first
)
4101 rejoin
->add_inode_frozen_authpin(vinodeno_t(i
.ino
, i
.snapid
),
4102 mdr
->reqid
, mdr
->attempt
);
4106 for (set
<SimpleLock
*>::iterator q
= mdr
->xlocks
.begin();
4107 q
!= mdr
->xlocks
.end();
4109 if (!(*q
)->get_parent()->is_auth()) {
4110 mds_rank_t who
= (*q
)->get_parent()->authority().first
;
4111 if (rejoins
.count(who
) == 0) continue;
4112 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4114 dout(15) << " " << *mdr
<< " xlock on " << **q
<< " " << *(*q
)->get_parent() << dendl
;
4115 MDSCacheObjectInfo i
;
4116 (*q
)->get_parent()->set_object_info(i
);
4118 rejoin
->add_inode_xlock(vinodeno_t(i
.ino
, i
.snapid
), (*q
)->get_type(),
4119 mdr
->reqid
, mdr
->attempt
);
4121 rejoin
->add_dentry_xlock(i
.dirfrag
, i
.dname
, i
.snapid
,
4122 mdr
->reqid
, mdr
->attempt
);
4126 for (map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
4127 q
!= mdr
->remote_wrlocks
.end();
4129 mds_rank_t who
= q
->second
;
4130 if (rejoins
.count(who
) == 0) continue;
4131 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4133 dout(15) << " " << *mdr
<< " wrlock on " << q
->second
4134 << " " << q
->first
->get_parent() << dendl
;
4135 MDSCacheObjectInfo i
;
4136 q
->first
->get_parent()->set_object_info(i
);
4138 rejoin
->add_inode_wrlock(vinodeno_t(i
.ino
, i
.snapid
), q
->first
->get_type(),
4139 mdr
->reqid
, mdr
->attempt
);
4144 // send the messages
4145 for (map
<mds_rank_t
,MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4148 assert(rejoin_sent
.count(p
->first
) == 0);
4149 assert(rejoin_ack_gather
.count(p
->first
) == 0);
4150 rejoin_sent
.insert(p
->first
);
4151 rejoin_ack_gather
.insert(p
->first
);
4152 mds
->send_message_mds(p
->second
, p
->first
);
4154 rejoin_ack_gather
.insert(mds
->get_nodeid()); // we need to complete rejoin_gather_finish, too
4155 rejoins_pending
= false;
4158 if (mds
->is_rejoin() && rejoins
.empty()) {
4159 dout(10) << "nothing to rejoin" << dendl
;
4160 rejoin_gather_finish();
4166 * rejoin_walk - build rejoin declarations for a subtree
4168 * @param dir subtree root
4169 * @param rejoin rejoin message
4171 * from a rejoining node:
4173 * weak dentries (w/ connectivity)
4175 * from a surviving node:
4177 * strong dentries (no connectivity!)
4180 void MDCache::rejoin_walk(CDir
*dir
, MMDSCacheRejoin
*rejoin
)
4182 dout(10) << "rejoin_walk " << *dir
<< dendl
;
4184 list
<CDir
*> nested
; // finish this dir, then do nested items
4186 if (mds
->is_rejoin()) {
4188 rejoin
->add_weak_dirfrag(dir
->dirfrag());
4189 for (CDir::map_t::iterator p
= dir
->items
.begin();
4190 p
!= dir
->items
.end();
4192 CDentry
*dn
= p
->second
;
4193 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4194 dout(15) << " add_weak_primary_dentry " << *dn
<< dendl
;
4195 assert(dnl
->is_primary());
4196 CInode
*in
= dnl
->get_inode();
4197 assert(dnl
->get_inode()->is_dir());
4198 rejoin
->add_weak_primary_dentry(dir
->ino(), dn
->name
.c_str(), dn
->first
, dn
->last
, in
->ino());
4199 in
->get_nested_dirfrags(nested
);
4200 if (in
->is_dirty_scattered()) {
4201 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4202 rejoin
->add_scatterlock_state(in
);
4207 dout(15) << " add_strong_dirfrag " << *dir
<< dendl
;
4208 rejoin
->add_strong_dirfrag(dir
->dirfrag(), dir
->get_replica_nonce(), dir
->get_dir_rep());
4209 dir
->state_set(CDir::STATE_REJOINING
);
4211 for (CDir::map_t::iterator p
= dir
->items
.begin();
4212 p
!= dir
->items
.end();
4214 CDentry
*dn
= p
->second
;
4215 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4216 dout(15) << " add_strong_dentry " << *dn
<< dendl
;
4217 rejoin
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
4218 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
4219 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
4220 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
4221 dn
->get_replica_nonce(),
4222 dn
->lock
.get_state());
4223 dn
->state_set(CDentry::STATE_REJOINING
);
4224 if (dnl
->is_primary()) {
4225 CInode
*in
= dnl
->get_inode();
4226 dout(15) << " add_strong_inode " << *in
<< dendl
;
4227 rejoin
->add_strong_inode(in
->vino(),
4228 in
->get_replica_nonce(),
4229 in
->get_caps_wanted(),
4230 in
->filelock
.get_state(),
4231 in
->nestlock
.get_state(),
4232 in
->dirfragtreelock
.get_state());
4233 in
->state_set(CInode::STATE_REJOINING
);
4234 in
->get_nested_dirfrags(nested
);
4235 if (in
->is_dirty_scattered()) {
4236 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4237 rejoin
->add_scatterlock_state(in
);
4243 // recurse into nested dirs
4244 for (list
<CDir
*>::iterator p
= nested
.begin();
4247 rejoin_walk(*p
, rejoin
);
4253 * - reply with the lockstate
4255 * if i am active|stopping,
4256 * - remove source from replica list for everything not referenced here.
4257 * This function puts the passed message before returning.
4259 void MDCache::handle_cache_rejoin(MMDSCacheRejoin
*m
)
4261 dout(7) << "handle_cache_rejoin " << *m
<< " from " << m
->get_source()
4262 << " (" << m
->get_payload().length() << " bytes)"
4266 case MMDSCacheRejoin::OP_WEAK
:
4267 handle_cache_rejoin_weak(m
);
4269 case MMDSCacheRejoin::OP_STRONG
:
4270 handle_cache_rejoin_strong(m
);
4272 case MMDSCacheRejoin::OP_ACK
:
4273 handle_cache_rejoin_ack(m
);
4284 * handle_cache_rejoin_weak
4287 * - is recovering from their journal.
4288 * - may have incorrect (out of date) inode contents
4289 * - will include weak dirfrag if sender is dirfrag auth and parent inode auth is recipient
4291 * if the sender didn't trim_non_auth(), they
4292 * - may have incorrect (out of date) dentry/inode linkage
4293 * - may have deleted/purged inodes
4294 * and i may have to go to disk to get accurate inode contents. yuck.
4295 * This functions DOES NOT put the passed message before returning
4297 void MDCache::handle_cache_rejoin_weak(MMDSCacheRejoin
*weak
)
4299 mds_rank_t from
= mds_rank_t(weak
->get_source().num());
4301 // possible response(s)
4302 MMDSCacheRejoin
*ack
= 0; // if survivor
4303 set
<vinodeno_t
> acked_inodes
; // if survivor
4304 set
<SimpleLock
*> gather_locks
; // if survivor
4305 bool survivor
= false; // am i a survivor?
4307 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
4309 dout(10) << "i am a surivivor, and will ack immediately" << dendl
;
4310 ack
= new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
4312 map
<inodeno_t
,map
<client_t
,Capability::Import
> > imported_caps
;
4314 // check cap exports
4315 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4316 CInode
*in
= get_inode(p
->first
);
4317 assert(!in
|| in
->is_auth());
4318 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4319 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< " on " << *in
<< dendl
;
4320 Capability
*cap
= rejoin_import_cap(in
, q
->first
, q
->second
, from
);
4321 Capability::Import
& im
= imported_caps
[p
->first
][q
->first
];
4323 im
.cap_id
= cap
->get_cap_id();
4324 im
.issue_seq
= cap
->get_last_seq();
4325 im
.mseq
= cap
->get_mseq();
4330 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
, true);
4333 ::encode(imported_caps
, ack
->imported_caps
);
4335 assert(mds
->is_rejoin());
4337 // we may have already received a strong rejoin from the sender.
4338 rejoin_scour_survivor_replicas(from
, NULL
, acked_inodes
, gather_locks
);
4339 assert(gather_locks
.empty());
4341 // check cap exports.
4342 rejoin_client_map
.insert(weak
->client_map
.begin(), weak
->client_map
.end());
4344 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4345 CInode
*in
= get_inode(p
->first
);
4346 assert(in
&& in
->is_auth());
4348 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4349 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< dendl
;
4350 cap_imports
[p
->first
][q
->first
][from
] = q
->second
;
4355 // assimilate any potentially dirty scatterlock state
4356 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4357 p
!= weak
->inode_scatterlocks
.end();
4359 CInode
*in
= get_inode(p
->first
);
4361 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4362 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4363 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4365 rejoin_potential_updated_scatterlocks
.insert(in
);
4368 // recovering peer may send incorrect dirfrags here. we need to
4369 // infer which dirfrag they meant. the ack will include a
4370 // strong_dirfrag that will set them straight on the fragmentation.
4373 set
<CDir
*> dirs_to_share
;
4374 for (set
<dirfrag_t
>::iterator p
= weak
->weak_dirfrags
.begin();
4375 p
!= weak
->weak_dirfrags
.end();
4377 CInode
*diri
= get_inode(p
->ino
);
4379 dout(0) << " missing dir ino " << p
->ino
<< dendl
;
4383 if (diri
->dirfragtree
.is_leaf(p
->frag
)) {
4384 ls
.push_back(p
->frag
);
4386 diri
->dirfragtree
.get_leaves_under(p
->frag
, ls
);
4388 ls
.push_back(diri
->dirfragtree
[p
->frag
.value()]);
4390 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4392 CDir
*dir
= diri
->get_dirfrag(fg
);
4394 dout(0) << " missing dir for " << p
->frag
<< " (which maps to " << fg
<< ") on " << *diri
<< dendl
;
4398 if (dirs_to_share
.count(dir
)) {
4399 dout(10) << " already have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4401 dirs_to_share
.insert(dir
);
4402 unsigned nonce
= dir
->add_replica(from
);
4403 dout(10) << " have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4405 ack
->add_strong_dirfrag(dir
->dirfrag(), nonce
, dir
->dir_rep
);
4406 ack
->add_dirfrag_base(dir
);
4412 for (map
<inodeno_t
,map
<string_snap_t
,MMDSCacheRejoin::dn_weak
> >::iterator p
= weak
->weak
.begin();
4413 p
!= weak
->weak
.end();
4415 CInode
*diri
= get_inode(p
->first
);
4417 dout(0) << " missing dir ino " << p
->first
<< dendl
;
4422 for (map
<string_snap_t
,MMDSCacheRejoin::dn_weak
>::iterator q
= p
->second
.begin();
4423 q
!= p
->second
.end();
4425 // locate proper dirfrag.
4426 // optimize for common case (one dirfrag) to avoid dirs_to_share set check
4427 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4428 if (!dir
|| dir
->get_frag() != fg
) {
4429 dir
= diri
->get_dirfrag(fg
);
4431 dout(0) << " missing dir frag " << fg
<< " on " << *diri
<< dendl
;
4433 assert(dirs_to_share
.count(dir
));
4437 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4439 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4440 assert(dnl
->is_primary());
4442 if (survivor
&& dn
->is_replica(from
))
4443 dentry_remove_replica(dn
, from
, gather_locks
);
4444 unsigned dnonce
= dn
->add_replica(from
);
4445 dout(10) << " have " << *dn
<< dendl
;
4447 ack
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
4448 dnl
->get_inode()->ino(), inodeno_t(0), 0,
4449 dnonce
, dn
->lock
.get_replica_state());
4452 CInode
*in
= dnl
->get_inode();
4455 if (survivor
&& in
->is_replica(from
))
4456 inode_remove_replica(in
, from
, true, gather_locks
);
4457 unsigned inonce
= in
->add_replica(from
);
4458 dout(10) << " have " << *in
<< dendl
;
4460 // scatter the dirlock, just in case?
4461 if (!survivor
&& in
->is_dir() && in
->has_subtree_root_dirfrag())
4462 in
->filelock
.set_state(LOCK_MIX
);
4465 acked_inodes
.insert(in
->vino());
4466 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4468 in
->_encode_locks_state_for_rejoin(bl
, from
);
4469 ack
->add_inode_locks(in
, inonce
, bl
);
4474 // weak base inodes? (root, stray, etc.)
4475 for (set
<vinodeno_t
>::iterator p
= weak
->weak_inodes
.begin();
4476 p
!= weak
->weak_inodes
.end();
4478 CInode
*in
= get_inode(*p
);
4479 assert(in
); // hmm fixme wrt stray?
4480 if (survivor
&& in
->is_replica(from
))
4481 inode_remove_replica(in
, from
, true, gather_locks
);
4482 unsigned inonce
= in
->add_replica(from
);
4483 dout(10) << " have base " << *in
<< dendl
;
4486 acked_inodes
.insert(in
->vino());
4487 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4489 in
->_encode_locks_state_for_rejoin(bl
, from
);
4490 ack
->add_inode_locks(in
, inonce
, bl
);
4494 assert(rejoin_gather
.count(from
));
4495 rejoin_gather
.erase(from
);
4497 // survivor. do everything now.
4498 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4499 p
!= weak
->inode_scatterlocks
.end();
4501 CInode
*in
= get_inode(p
->first
);
4503 dout(10) << " including base inode (due to potential scatterlock update) " << *in
<< dendl
;
4504 acked_inodes
.insert(in
->vino());
4505 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4508 rejoin_scour_survivor_replicas(from
, ack
, acked_inodes
, gather_locks
);
4509 mds
->send_message(ack
, weak
->get_connection());
4511 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
4512 if (!(*p
)->is_stable())
4513 mds
->locker
->eval_gather(*p
);
4517 if (rejoin_gather
.empty()) {
4518 rejoin_gather_finish();
4520 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4525 class C_MDC_RejoinGatherFinish
: public MDCacheContext
{
4527 explicit C_MDC_RejoinGatherFinish(MDCache
*c
) : MDCacheContext(c
) {}
4528 void finish(int r
) override
{
4529 mdcache
->rejoin_gather_finish();
4534 * rejoin_scour_survivor_replica - remove source from replica list on unmentioned objects
4536 * all validated replicas are acked with a strong nonce, etc. if that isn't in the
4537 * ack, the replica dne, and we can remove it from our replica maps.
4539 void MDCache::rejoin_scour_survivor_replicas(mds_rank_t from
, MMDSCacheRejoin
*ack
,
4540 set
<vinodeno_t
>& acked_inodes
,
4541 set
<SimpleLock
*>& gather_locks
)
4543 dout(10) << "rejoin_scour_survivor_replicas from mds." << from
<< dendl
;
4545 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
4546 p
!= inode_map
.end();
4548 CInode
*in
= p
->second
;
4551 if (in
->is_auth() &&
4552 in
->is_replica(from
) &&
4553 (ack
== NULL
|| acked_inodes
.count(p
->second
->vino()) == 0)) {
4554 inode_remove_replica(in
, from
, false, gather_locks
);
4555 dout(10) << " rem " << *in
<< dendl
;
4558 if (!in
->is_dir()) continue;
4561 in
->get_dirfrags(dfs
);
4562 for (list
<CDir
*>::iterator p
= dfs
.begin();
4567 if (dir
->is_auth() &&
4568 dir
->is_replica(from
) &&
4569 (ack
== NULL
|| ack
->strong_dirfrags
.count(dir
->dirfrag()) == 0)) {
4570 dir
->remove_replica(from
);
4571 dout(10) << " rem " << *dir
<< dendl
;
4575 for (CDir::map_t::iterator p
= dir
->items
.begin();
4576 p
!= dir
->items
.end();
4578 CDentry
*dn
= p
->second
;
4580 if (dn
->is_replica(from
) &&
4582 ack
->strong_dentries
.count(dir
->dirfrag()) == 0 ||
4583 ack
->strong_dentries
[dir
->dirfrag()].count(string_snap_t(dn
->name
, dn
->last
)) == 0)) {
4584 dentry_remove_replica(dn
, from
, gather_locks
);
4585 dout(10) << " rem " << *dn
<< dendl
;
4593 CInode
*MDCache::rejoin_invent_inode(inodeno_t ino
, snapid_t last
)
4595 CInode
*in
= new CInode(this, true, 1, last
);
4596 in
->inode
.ino
= ino
;
4597 in
->state_set(CInode::STATE_REJOINUNDEF
);
4599 rejoin_undef_inodes
.insert(in
);
4600 dout(10) << " invented " << *in
<< dendl
;
4604 CDir
*MDCache::rejoin_invent_dirfrag(dirfrag_t df
)
4606 CInode
*in
= get_inode(df
.ino
);
4608 in
= rejoin_invent_inode(df
.ino
, CEPH_NOSNAP
);
4609 if (!in
->is_dir()) {
4610 assert(in
->state_test(CInode::STATE_REJOINUNDEF
));
4611 in
->inode
.mode
= S_IFDIR
;
4612 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4614 CDir
*dir
= in
->get_or_open_dirfrag(this, df
.frag
);
4615 dir
->state_set(CDir::STATE_REJOINUNDEF
);
4616 rejoin_undef_dirfrags
.insert(dir
);
4617 dout(10) << " invented " << *dir
<< dendl
;
4621 /* This functions DOES NOT put the passed message before returning */
4622 void MDCache::handle_cache_rejoin_strong(MMDSCacheRejoin
*strong
)
4624 mds_rank_t from
= mds_rank_t(strong
->get_source().num());
4626 // only a recovering node will get a strong rejoin.
4627 assert(mds
->is_rejoin());
4629 // assimilate any potentially dirty scatterlock state
4630 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= strong
->inode_scatterlocks
.begin();
4631 p
!= strong
->inode_scatterlocks
.end();
4633 CInode
*in
= get_inode(p
->first
);
4635 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4636 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4637 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4638 rejoin_potential_updated_scatterlocks
.insert(in
);
4641 rejoin_unlinked_inodes
[from
].clear();
4643 // surviving peer may send incorrect dirfrag here (maybe they didn't
4644 // get the fragment notify, or maybe we rolled back?). we need to
4645 // infer the right frag and get them with the program. somehow.
4646 // we don't normally send ACK.. so we'll need to bundle this with
4647 // MISSING or something.
4649 // strong dirfrags/dentries.
4650 // also process auth_pins, xlocks.
4651 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= strong
->strong_dirfrags
.begin();
4652 p
!= strong
->strong_dirfrags
.end();
4654 CInode
*diri
= get_inode(p
->first
.ino
);
4656 diri
= rejoin_invent_inode(p
->first
.ino
, CEPH_NOSNAP
);
4657 CDir
*dir
= diri
->get_dirfrag(p
->first
.frag
);
4658 bool refragged
= false;
4660 dout(10) << " have " << *dir
<< dendl
;
4662 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
4663 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), frag_t()));
4664 else if (diri
->dirfragtree
.is_leaf(p
->first
.frag
))
4665 dir
= rejoin_invent_dirfrag(p
->first
);
4668 dir
->add_replica(from
, p
->second
.nonce
);
4669 dir
->dir_rep
= p
->second
.dir_rep
;
4671 dout(10) << " frag " << p
->first
<< " doesn't match dirfragtree " << *diri
<< dendl
;
4673 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, ls
);
4675 ls
.push_back(diri
->dirfragtree
[p
->first
.frag
.value()]);
4676 dout(10) << " maps to frag(s) " << ls
<< dendl
;
4677 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4678 CDir
*dir
= diri
->get_dirfrag(*q
);
4680 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), *q
));
4682 dout(10) << " have(approx) " << *dir
<< dendl
;
4683 dir
->add_replica(from
, p
->second
.nonce
);
4684 dir
->dir_rep
= p
->second
.dir_rep
;
4689 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= strong
->strong_dentries
[p
->first
];
4690 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4695 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4697 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4698 dir
= diri
->get_dirfrag(fg
);
4700 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4703 if (q
->second
.is_remote()) {
4704 dn
= dir
->add_remote_dentry(q
->first
.name
, q
->second
.remote_ino
, q
->second
.remote_d_type
,
4705 q
->second
.first
, q
->first
.snapid
);
4706 } else if (q
->second
.is_null()) {
4707 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4709 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4710 if (!in
) in
= rejoin_invent_inode(q
->second
.ino
, q
->first
.snapid
);
4711 dn
= dir
->add_primary_dentry(q
->first
.name
, in
, q
->second
.first
, q
->first
.snapid
);
4713 dout(10) << " invented " << *dn
<< dendl
;
4715 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4718 if (strong
->authpinned_dentries
.count(p
->first
) &&
4719 strong
->authpinned_dentries
[p
->first
].count(q
->first
)) {
4720 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_dentries
[p
->first
][q
->first
].begin();
4721 r
!= strong
->authpinned_dentries
[p
->first
][q
->first
].end();
4723 dout(10) << " dn authpin by " << *r
<< " on " << *dn
<< dendl
;
4725 // get/create slave mdrequest
4727 if (have_request(r
->reqid
))
4728 mdr
= request_get(r
->reqid
);
4730 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4736 if (strong
->xlocked_dentries
.count(p
->first
) &&
4737 strong
->xlocked_dentries
[p
->first
].count(q
->first
)) {
4738 MMDSCacheRejoin::slave_reqid r
= strong
->xlocked_dentries
[p
->first
][q
->first
];
4739 dout(10) << " dn xlock by " << r
<< " on " << *dn
<< dendl
;
4740 MDRequestRef mdr
= request_get(r
.reqid
); // should have this from auth_pin above.
4741 assert(mdr
->is_auth_pinned(dn
));
4742 if (!mdr
->xlocks
.count(&dn
->versionlock
)) {
4743 assert(dn
->versionlock
.can_xlock_local());
4744 dn
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4745 mdr
->xlocks
.insert(&dn
->versionlock
);
4746 mdr
->locks
.insert(&dn
->versionlock
);
4748 if (dn
->lock
.is_stable())
4749 dn
->auth_pin(&dn
->lock
);
4750 dn
->lock
.set_state(LOCK_XLOCK
);
4751 dn
->lock
.get_xlock(mdr
, mdr
->get_client());
4752 mdr
->xlocks
.insert(&dn
->lock
);
4753 mdr
->locks
.insert(&dn
->lock
);
4756 dn
->add_replica(from
, q
->second
.nonce
);
4757 dout(10) << " have " << *dn
<< dendl
;
4759 if (dnl
->is_primary()) {
4760 if (q
->second
.is_primary()) {
4761 if (vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != dnl
->get_inode()->vino()) {
4762 // the survivor missed MDentryUnlink+MDentryLink messages ?
4763 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4764 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4766 assert(in
->get_parent_dn());
4767 rejoin_unlinked_inodes
[from
].insert(in
);
4768 dout(7) << " sender has primary dentry but wrong inode" << dendl
;
4771 // the survivor missed MDentryLink message ?
4772 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4773 dout(7) << " sender doesn't have primay dentry" << dendl
;
4776 if (q
->second
.is_primary()) {
4777 // the survivor missed MDentryUnlink message ?
4778 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4780 assert(in
->get_parent_dn());
4781 rejoin_unlinked_inodes
[from
].insert(in
);
4782 dout(7) << " sender has primary dentry but we don't" << dendl
;
4788 for (map
<vinodeno_t
, MMDSCacheRejoin::inode_strong
>::iterator p
= strong
->strong_inodes
.begin();
4789 p
!= strong
->strong_inodes
.end();
4791 CInode
*in
= get_inode(p
->first
);
4793 in
->add_replica(from
, p
->second
.nonce
);
4794 dout(10) << " have " << *in
<< dendl
;
4796 MMDSCacheRejoin::inode_strong
&is
= p
->second
;
4799 if (is
.caps_wanted
) {
4800 in
->mds_caps_wanted
[from
] = is
.caps_wanted
;
4801 dout(15) << " inode caps_wanted " << ccap_string(is
.caps_wanted
)
4802 << " on " << *in
<< dendl
;
4806 // infer state from replica state:
4807 // * go to MIX if they might have wrlocks
4808 // * go to LOCK if they are LOCK (just bc identify_files_to_recover might start twiddling filelock)
4809 in
->filelock
.infer_state_from_strong_rejoin(is
.filelock
, !in
->is_dir()); // maybe also go to LOCK
4810 in
->nestlock
.infer_state_from_strong_rejoin(is
.nestlock
, false);
4811 in
->dirfragtreelock
.infer_state_from_strong_rejoin(is
.dftlock
, false);
4814 if (strong
->authpinned_inodes
.count(in
->vino())) {
4815 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_inodes
[in
->vino()].begin();
4816 r
!= strong
->authpinned_inodes
[in
->vino()].end();
4818 dout(10) << " inode authpin by " << *r
<< " on " << *in
<< dendl
;
4820 // get/create slave mdrequest
4822 if (have_request(r
->reqid
))
4823 mdr
= request_get(r
->reqid
);
4825 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4826 if (strong
->frozen_authpin_inodes
.count(in
->vino())) {
4827 assert(!in
->get_num_auth_pins());
4828 mdr
->freeze_auth_pin(in
);
4830 assert(!in
->is_frozen_auth_pin());
4836 if (strong
->xlocked_inodes
.count(in
->vino())) {
4837 for (map
<int,MMDSCacheRejoin::slave_reqid
>::iterator q
= strong
->xlocked_inodes
[in
->vino()].begin();
4838 q
!= strong
->xlocked_inodes
[in
->vino()].end();
4840 SimpleLock
*lock
= in
->get_lock(q
->first
);
4841 dout(10) << " inode xlock by " << q
->second
<< " on " << *lock
<< " on " << *in
<< dendl
;
4842 MDRequestRef mdr
= request_get(q
->second
.reqid
); // should have this from auth_pin above.
4843 assert(mdr
->is_auth_pinned(in
));
4844 if (!mdr
->xlocks
.count(&in
->versionlock
)) {
4845 assert(in
->versionlock
.can_xlock_local());
4846 in
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4847 mdr
->xlocks
.insert(&in
->versionlock
);
4848 mdr
->locks
.insert(&in
->versionlock
);
4850 if (lock
->is_stable())
4852 lock
->set_state(LOCK_XLOCK
);
4853 if (lock
== &in
->filelock
)
4855 lock
->get_xlock(mdr
, mdr
->get_client());
4856 mdr
->xlocks
.insert(lock
);
4857 mdr
->locks
.insert(lock
);
4862 for (map
<vinodeno_t
, map
<int, list
<MMDSCacheRejoin::slave_reqid
> > >::iterator p
= strong
->wrlocked_inodes
.begin();
4863 p
!= strong
->wrlocked_inodes
.end();
4865 CInode
*in
= get_inode(p
->first
);
4866 for (map
<int, list
<MMDSCacheRejoin::slave_reqid
> >::iterator q
= p
->second
.begin();
4867 q
!= p
->second
.end();
4869 SimpleLock
*lock
= in
->get_lock(q
->first
);
4870 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= q
->second
.begin();
4871 r
!= q
->second
.end();
4873 dout(10) << " inode wrlock by " << *r
<< " on " << *lock
<< " on " << *in
<< dendl
;
4874 MDRequestRef mdr
= request_get(r
->reqid
); // should have this from auth_pin above.
4876 assert(mdr
->is_auth_pinned(in
));
4877 lock
->set_state(LOCK_MIX
);
4878 if (lock
== &in
->filelock
)
4880 lock
->get_wrlock(true);
4881 mdr
->wrlocks
.insert(lock
);
4882 mdr
->locks
.insert(lock
);
4888 assert(rejoin_gather
.count(from
));
4889 rejoin_gather
.erase(from
);
4890 if (rejoin_gather
.empty()) {
4891 rejoin_gather_finish();
4893 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4897 /* This functions DOES NOT put the passed message before returning */
4898 void MDCache::handle_cache_rejoin_ack(MMDSCacheRejoin
*ack
)
4900 dout(7) << "handle_cache_rejoin_ack from " << ack
->get_source() << dendl
;
4901 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
4903 // for sending cache expire message
4904 set
<CInode
*> isolated_inodes
;
4905 set
<CInode
*> refragged_inodes
;
4908 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= ack
->strong_dirfrags
.begin();
4909 p
!= ack
->strong_dirfrags
.end();
4911 // we may have had incorrect dir fragmentation; refragment based
4912 // on what they auth tells us.
4913 CDir
*dir
= get_dirfrag(p
->first
);
4915 dir
= get_force_dirfrag(p
->first
, false);
4917 refragged_inodes
.insert(dir
->get_inode());
4920 CInode
*diri
= get_inode(p
->first
.ino
);
4922 // barebones inode; the full inode loop below will clean up.
4923 diri
= new CInode(this, false);
4924 diri
->inode
.ino
= p
->first
.ino
;
4925 diri
->inode
.mode
= S_IFDIR
;
4926 diri
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4928 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
) {
4929 diri
->inode_auth
= mds_authority_t(from
, CDIR_AUTH_UNKNOWN
);
4930 dout(10) << " add inode " << *diri
<< dendl
;
4932 diri
->inode_auth
= CDIR_AUTH_DEFAULT
;
4933 isolated_inodes
.insert(diri
);
4934 dout(10) << " unconnected dirfrag " << p
->first
<< dendl
;
4937 // barebones dirfrag; the full dirfrag loop below will clean up.
4938 dir
= diri
->add_dirfrag(new CDir(diri
, p
->first
.frag
, this, false));
4939 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
||
4940 (dir
->authority() != CDIR_AUTH_UNDEF
&&
4941 dir
->authority().first
!= from
))
4942 adjust_subtree_auth(dir
, from
);
4943 dout(10) << " add dirfrag " << *dir
<< dendl
;
4946 dir
->set_replica_nonce(p
->second
.nonce
);
4947 dir
->state_clear(CDir::STATE_REJOINING
);
4948 dout(10) << " got " << *dir
<< dendl
;
4951 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= ack
->strong_dentries
[p
->first
];
4952 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4955 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4957 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4959 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4961 assert(dn
->last
== q
->first
.snapid
);
4962 if (dn
->first
!= q
->second
.first
) {
4963 dout(10) << " adjust dn.first " << dn
->first
<< " -> " << q
->second
.first
<< " on " << *dn
<< dendl
;
4964 dn
->first
= q
->second
.first
;
4967 // may have bad linkage if we missed dentry link/unlink messages
4968 if (dnl
->is_primary()) {
4969 CInode
*in
= dnl
->get_inode();
4970 if (!q
->second
.is_primary() ||
4971 vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != in
->vino()) {
4972 dout(10) << " had bad linkage for " << *dn
<< ", unlinking " << *in
<< dendl
;
4973 dir
->unlink_inode(dn
);
4975 } else if (dnl
->is_remote()) {
4976 if (!q
->second
.is_remote() ||
4977 q
->second
.remote_ino
!= dnl
->get_remote_ino() ||
4978 q
->second
.remote_d_type
!= dnl
->get_remote_d_type()) {
4979 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4980 dir
->unlink_inode(dn
);
4983 if (!q
->second
.is_null())
4984 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4987 // hmm, did we have the proper linkage here?
4988 if (dnl
->is_null() && !q
->second
.is_null()) {
4989 if (q
->second
.is_remote()) {
4990 dn
->dir
->link_remote_inode(dn
, q
->second
.remote_ino
, q
->second
.remote_d_type
);
4992 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4994 // barebones inode; assume it's dir, the full inode loop below will clean up.
4995 in
= new CInode(this, false, q
->second
.first
, q
->first
.snapid
);
4996 in
->inode
.ino
= q
->second
.ino
;
4997 in
->inode
.mode
= S_IFDIR
;
4998 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
5000 dout(10) << " add inode " << *in
<< dendl
;
5001 } else if (in
->get_parent_dn()) {
5002 dout(10) << " had bad linkage for " << *(in
->get_parent_dn())
5003 << ", unlinking " << *in
<< dendl
;
5004 in
->get_parent_dir()->unlink_inode(in
->get_parent_dn());
5006 dn
->dir
->link_primary_inode(dn
, in
);
5007 isolated_inodes
.erase(in
);
5011 dn
->set_replica_nonce(q
->second
.nonce
);
5012 dn
->lock
.set_state_rejoin(q
->second
.lock
, rejoin_waiters
);
5013 dn
->state_clear(CDentry::STATE_REJOINING
);
5014 dout(10) << " got " << *dn
<< dendl
;
5018 for (set
<CInode
*>::iterator p
= refragged_inodes
.begin();
5019 p
!= refragged_inodes
.end();
5022 (*p
)->get_nested_dirfrags(ls
);
5023 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
5024 if ((*q
)->is_auth() || ack
->strong_dirfrags
.count((*q
)->dirfrag()))
5026 assert((*q
)->get_num_any() == 0);
5027 (*p
)->close_dirfrag((*q
)->get_frag());
5032 for (map
<dirfrag_t
, bufferlist
>::iterator p
= ack
->dirfrag_bases
.begin();
5033 p
!= ack
->dirfrag_bases
.end();
5035 CDir
*dir
= get_dirfrag(p
->first
);
5037 bufferlist::iterator q
= p
->second
.begin();
5038 dir
->_decode_base(q
);
5039 dout(10) << " got dir replica " << *dir
<< dendl
;
5043 bufferlist::iterator p
= ack
->inode_base
.begin();
5050 ::decode(basebl
, p
);
5051 CInode
*in
= get_inode(ino
, last
);
5053 bufferlist::iterator q
= basebl
.begin();
5054 in
->_decode_base(q
);
5055 dout(10) << " got inode base " << *in
<< dendl
;
5059 p
= ack
->inode_locks
.begin();
5060 //dout(10) << "inode_locks len " << ack->inode_locks.length() << " is " << ack->inode_locks << dendl;
5069 ::decode(lockbl
, p
);
5071 CInode
*in
= get_inode(ino
, last
);
5073 in
->set_replica_nonce(nonce
);
5074 bufferlist::iterator q
= lockbl
.begin();
5075 in
->_decode_locks_rejoin(q
, rejoin_waiters
, rejoin_eval_locks
);
5076 in
->state_clear(CInode::STATE_REJOINING
);
5077 dout(10) << " got inode locks " << *in
<< dendl
;
5080 // FIXME: This can happen if entire subtree, together with the inode subtree root
5081 // belongs to, were trimmed between sending cache rejoin and receiving rejoin ack.
5082 assert(isolated_inodes
.empty());
5084 map
<inodeno_t
,map
<client_t
,Capability::Import
> > peer_imported
;
5085 bufferlist::iterator bp
= ack
->imported_caps
.begin();
5086 ::decode(peer_imported
, bp
);
5088 for (map
<inodeno_t
,map
<client_t
,Capability::Import
> >::iterator p
= peer_imported
.begin();
5089 p
!= peer_imported
.end();
5091 assert(cap_exports
.count(p
->first
));
5092 assert(cap_export_targets
.count(p
->first
));
5093 assert(cap_export_targets
[p
->first
] == from
);
5094 for (map
<client_t
,Capability::Import
>::iterator q
= p
->second
.begin();
5095 q
!= p
->second
.end();
5097 assert(cap_exports
[p
->first
].count(q
->first
));
5099 dout(10) << " exporting caps for client." << q
->first
<< " ino " << p
->first
<< dendl
;
5100 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5103 // mark client caps stale.
5104 MClientCaps
*m
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0,
5105 cap_exports
[p
->first
][q
->first
].capinfo
.cap_id
, 0,
5106 mds
->get_osd_epoch_barrier());
5107 m
->set_cap_peer(q
->second
.cap_id
, q
->second
.issue_seq
, q
->second
.mseq
,
5108 (q
->second
.cap_id
> 0 ? from
: -1), 0);
5109 mds
->send_message_client_counted(m
, session
);
5111 cap_exports
[p
->first
].erase(q
->first
);
5113 assert(cap_exports
[p
->first
].empty());
5117 assert(rejoin_ack_gather
.count(from
));
5118 rejoin_ack_gather
.erase(from
);
5119 if (mds
->is_rejoin()) {
5121 if (rejoin_gather
.empty()) {
5122 // eval unstable scatter locks after all wrlocks are rejoined.
5123 while (!rejoin_eval_locks
.empty()) {
5124 SimpleLock
*lock
= rejoin_eval_locks
.front();
5125 rejoin_eval_locks
.pop_front();
5126 if (!lock
->is_stable())
5127 mds
->locker
->eval_gather(lock
);
5131 if (rejoin_gather
.empty() && // make sure we've gotten our FULL inodes, too.
5132 rejoin_ack_gather
.empty()) {
5133 // finally, kickstart past snap parent opens
5134 open_snap_parents();
5136 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")"
5137 << ", rejoin_ack from (" << rejoin_ack_gather
<< ")" << dendl
;
5141 mds
->queue_waiters(rejoin_waiters
);
5146 * rejoin_trim_undef_inodes() -- remove REJOINUNDEF flagged inodes
5148 * FIXME: wait, can this actually happen? a survivor should generate cache trim
5149 * messages that clean these guys up...
5151 void MDCache::rejoin_trim_undef_inodes()
5153 dout(10) << "rejoin_trim_undef_inodes" << dendl
;
5155 while (!rejoin_undef_inodes
.empty()) {
5156 set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5158 rejoin_undef_inodes
.erase(p
);
5160 in
->clear_replica_map();
5162 // close out dirfrags
5165 in
->get_dirfrags(dfls
);
5166 for (list
<CDir
*>::iterator p
= dfls
.begin();
5170 dir
->clear_replica_map();
5172 for (CDir::map_t::iterator p
= dir
->items
.begin();
5173 p
!= dir
->items
.end();
5175 CDentry
*dn
= p
->second
;
5176 dn
->clear_replica_map();
5178 dout(10) << " trimming " << *dn
<< dendl
;
5179 dir
->remove_dentry(dn
);
5182 dout(10) << " trimming " << *dir
<< dendl
;
5183 in
->close_dirfrag(dir
->dirfrag().frag
);
5187 CDentry
*dn
= in
->get_parent_dn();
5189 dn
->clear_replica_map();
5190 dout(10) << " trimming " << *dn
<< dendl
;
5191 dn
->dir
->remove_dentry(dn
);
5193 dout(10) << " trimming " << *in
<< dendl
;
5198 assert(rejoin_undef_inodes
.empty());
5201 void MDCache::rejoin_gather_finish()
5203 dout(10) << "rejoin_gather_finish" << dendl
;
5204 assert(mds
->is_rejoin());
5206 if (open_undef_inodes_dirfrags())
5209 if (process_imported_caps())
5212 choose_lock_states_and_reconnect_caps();
5214 identify_files_to_recover();
5217 // signal completion of fetches, rejoin_gather_finish, etc.
5218 assert(rejoin_ack_gather
.count(mds
->get_nodeid()));
5219 rejoin_ack_gather
.erase(mds
->get_nodeid());
5221 // did we already get our acks too?
5222 if (rejoin_ack_gather
.empty()) {
5223 // finally, kickstart past snap parent opens
5224 open_snap_parents();
5228 class C_MDC_RejoinOpenInoFinish
: public MDCacheContext
{
5231 C_MDC_RejoinOpenInoFinish(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
5232 void finish(int r
) override
{
5233 mdcache
->rejoin_open_ino_finish(ino
, r
);
5237 void MDCache::rejoin_open_ino_finish(inodeno_t ino
, int ret
)
5239 dout(10) << "open_caps_inode_finish ino " << ino
<< " ret " << ret
<< dendl
;
5242 cap_imports_missing
.insert(ino
);
5243 } else if (ret
== mds
->get_nodeid()) {
5244 assert(get_inode(ino
));
5246 auto p
= cap_imports
.find(ino
);
5247 assert(p
!= cap_imports
.end());
5248 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5249 assert(q
->second
.count(MDS_RANK_NONE
));
5250 assert(q
->second
.size() == 1);
5251 rejoin_export_caps(p
->first
, q
->first
, q
->second
[MDS_RANK_NONE
], ret
);
5253 cap_imports
.erase(p
);
5256 assert(cap_imports_num_opening
> 0);
5257 cap_imports_num_opening
--;
5259 if (cap_imports_num_opening
== 0) {
5260 if (rejoin_gather
.empty())
5261 rejoin_gather_finish();
5262 else if (rejoin_gather
.count(mds
->get_nodeid()))
5263 process_imported_caps();
5267 class C_MDC_RejoinSessionsOpened
: public MDCacheLogContext
{
5269 map
<client_t
,entity_inst_t
> client_map
;
5270 map
<client_t
,uint64_t> sseqmap
;
5272 C_MDC_RejoinSessionsOpened(MDCache
*c
, map
<client_t
,entity_inst_t
>& cm
) :
5273 MDCacheLogContext(c
), client_map(cm
) {}
5274 void finish(int r
) override
{
5276 mdcache
->rejoin_open_sessions_finish(client_map
, sseqmap
);
5280 void MDCache::rejoin_open_sessions_finish(map
<client_t
,entity_inst_t
> client_map
,
5281 map
<client_t
,uint64_t>& sseqmap
)
5283 dout(10) << "rejoin_open_sessions_finish" << dendl
;
5284 mds
->server
->finish_force_open_sessions(client_map
, sseqmap
);
5285 if (rejoin_gather
.empty())
5286 rejoin_gather_finish();
5289 bool MDCache::process_imported_caps()
5291 dout(10) << "process_imported_caps" << dendl
;
5293 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5294 CInode
*in
= get_inode(p
->first
);
5296 assert(in
->is_auth());
5297 cap_imports_missing
.erase(p
->first
);
5300 if (cap_imports_missing
.count(p
->first
) > 0)
5303 cap_imports_num_opening
++;
5304 dout(10) << " opening missing ino " << p
->first
<< dendl
;
5305 open_ino(p
->first
, (int64_t)-1, new C_MDC_RejoinOpenInoFinish(this, p
->first
), false);
5308 if (cap_imports_num_opening
> 0)
5311 // called by rejoin_gather_finish() ?
5312 if (rejoin_gather
.count(mds
->get_nodeid()) == 0) {
5313 // if sessions for imported caps are all open ?
5314 for (map
<client_t
,entity_inst_t
>::iterator p
= rejoin_client_map
.begin();
5315 p
!= rejoin_client_map
.end();
5317 if (!mds
->sessionmap
.have_session(entity_name_t::CLIENT(p
->first
.v
))) {
5318 C_MDC_RejoinSessionsOpened
*finish
= new C_MDC_RejoinSessionsOpened(this, rejoin_client_map
);
5319 version_t pv
= mds
->server
->prepare_force_open_sessions(rejoin_client_map
, finish
->sseqmap
);
5320 ESessions
*le
= new ESessions(pv
, rejoin_client_map
);
5321 mds
->mdlog
->start_submit_entry(le
, finish
);
5322 mds
->mdlog
->flush();
5323 rejoin_client_map
.clear();
5327 rejoin_client_map
.clear();
5329 // process caps that were exported by slave rename
5330 for (map
<inodeno_t
,pair
<mds_rank_t
,map
<client_t
,Capability::Export
> > >::iterator p
= rejoin_slave_exports
.begin();
5331 p
!= rejoin_slave_exports
.end();
5333 CInode
*in
= get_inode(p
->first
);
5335 for (map
<client_t
,Capability::Export
>::iterator q
= p
->second
.second
.begin();
5336 q
!= p
->second
.second
.end();
5338 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5341 Capability
*cap
= in
->get_client_cap(q
->first
);
5343 cap
= in
->add_client_cap(q
->first
, session
);
5344 cap
->merge(q
->second
, true);
5346 Capability::Import
& im
= rejoin_imported_caps
[p
->second
.first
][p
->first
][q
->first
];
5347 assert(cap
->get_last_seq() == im
.issue_seq
);
5348 assert(cap
->get_mseq() == im
.mseq
);
5349 cap
->set_cap_id(im
.cap_id
);
5350 // send cap import because we assigned a new cap ID
5351 do_cap_import(session
, in
, cap
, q
->second
.cap_id
, q
->second
.seq
, q
->second
.mseq
- 1,
5352 p
->second
.first
, CEPH_CAP_FLAG_AUTH
);
5355 rejoin_slave_exports
.clear();
5356 rejoin_imported_caps
.clear();
5358 // process cap imports
5359 // ino -> client -> frommds -> capex
5360 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ) {
5361 CInode
*in
= get_inode(p
->first
);
5363 dout(10) << " still missing ino " << p
->first
5364 << ", will try again after replayed client requests" << dendl
;
5368 assert(in
->is_auth());
5369 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5370 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5372 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5373 Capability
*cap
= in
->reconnect_cap(q
->first
, r
->second
, session
);
5374 add_reconnected_cap(q
->first
, in
->ino(), r
->second
);
5375 if (r
->first
>= 0) {
5376 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5378 do_cap_import(session
, in
, cap
, r
->second
.capinfo
.cap_id
, 0, 0, r
->first
, 0);
5380 Capability::Import
& im
= rejoin_imported_caps
[r
->first
][p
->first
][q
->first
];
5381 im
.cap_id
= cap
->get_cap_id();
5382 im
.issue_seq
= cap
->get_last_seq();
5383 im
.mseq
= cap
->get_mseq();
5387 cap_imports
.erase(p
++); // remove and move on
5392 rejoin_gather
.erase(mds
->get_nodeid());
5393 maybe_send_pending_rejoins();
5395 if (rejoin_gather
.empty() && rejoin_ack_gather
.count(mds
->get_nodeid()))
5396 rejoin_gather_finish();
5401 void MDCache::check_realm_past_parents(SnapRealm
*realm
, bool reconnect
)
5403 // are this realm's parents fully open?
5404 if (realm
->have_past_parents_open()) {
5405 dout(10) << " have past snap parents for realm " << *realm
5406 << " on " << *realm
->inode
<< dendl
;
5408 // finish off client snaprealm reconnects?
5409 auto p
= reconnected_snaprealms
.find(realm
->inode
->ino());
5410 if (p
!= reconnected_snaprealms
.end()) {
5411 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
5412 finish_snaprealm_reconnect(q
->first
, realm
, q
->second
);
5413 reconnected_snaprealms
.erase(p
);
5417 if (!missing_snap_parents
.count(realm
->inode
)) {
5418 dout(10) << " MISSING past snap parents for realm " << *realm
5419 << " on " << *realm
->inode
<< dendl
;
5420 realm
->inode
->get(CInode::PIN_OPENINGSNAPPARENTS
);
5421 missing_snap_parents
[realm
->inode
].size(); // just to get it into the map!
5423 dout(10) << " (already) MISSING past snap parents for realm " << *realm
5424 << " on " << *realm
->inode
<< dendl
;
5429 void MDCache::rebuild_need_snapflush(CInode
*head_in
, SnapRealm
*realm
,
5430 client_t client
, snapid_t snap_follows
)
5432 dout(10) << "rebuild_need_snapflush " << snap_follows
<< " on " << *head_in
<< dendl
;
5434 const set
<snapid_t
>& snaps
= realm
->get_snaps();
5435 snapid_t follows
= snap_follows
;
5438 CInode
*in
= pick_inode_snap(head_in
, follows
);
5441 dout(10) << " need snapflush from client." << client
<< " on " << *in
<< dendl
;
5443 /* TODO: we can check the reconnected/flushing caps to find
5444 * which locks need gathering */
5445 for (int i
= 0; i
< num_cinode_locks
; i
++) {
5446 int lockid
= cinode_lock_info
[i
].lock
;
5447 SimpleLock
*lock
= in
->get_lock(lockid
);
5449 in
->client_snap_caps
[lockid
].insert(client
);
5451 lock
->set_state(LOCK_SNAP_SYNC
);
5452 lock
->get_wrlock(true);
5455 for (auto p
= snaps
.lower_bound(in
->first
);
5456 p
!= snaps
.end() && *p
<= in
->last
;
5458 head_in
->add_need_snapflush(in
, *p
, client
);
5466 * choose lock states based on reconnected caps
5468 void MDCache::choose_lock_states_and_reconnect_caps()
5470 dout(10) << "choose_lock_states_and_reconnect_caps" << dendl
;
5472 map
<client_t
,MClientSnap
*> splits
;
5474 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator i
= inode_map
.begin();
5475 i
!= inode_map
.end();
5477 CInode
*in
= i
->second
;
5479 if (in
->last
!= CEPH_NOSNAP
)
5482 if (in
->is_auth() && !in
->is_base() && in
->inode
.is_dirty_rstat())
5483 in
->mark_dirty_rstat();
5485 auto p
= reconnected_caps
.find(in
->ino());
5488 if (p
!= reconnected_caps
.end()) {
5489 for (const auto &it
: p
->second
)
5490 dirty_caps
|= it
.second
.dirty_caps
;
5492 in
->choose_lock_states(dirty_caps
);
5493 dout(15) << " chose lock states on " << *in
<< dendl
;
5495 SnapRealm
*realm
= in
->find_snaprealm();
5497 check_realm_past_parents(realm
, realm
== in
->snaprealm
);
5499 if (p
!= reconnected_caps
.end()) {
5500 bool missing_snap_parent
= false;
5501 // also, make sure client's cap is in the correct snaprealm.
5502 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5503 if (q
->second
.snap_follows
> 0 && q
->second
.snap_follows
< in
->first
- 1) {
5504 if (realm
->have_past_parents_open()) {
5505 rebuild_need_snapflush(in
, realm
, q
->first
, q
->second
.snap_follows
);
5507 missing_snap_parent
= true;
5511 if (q
->second
.realm_ino
== realm
->inode
->ino()) {
5512 dout(15) << " client." << q
->first
<< " has correct realm " << q
->second
.realm_ino
<< dendl
;
5514 dout(15) << " client." << q
->first
<< " has wrong realm " << q
->second
.realm_ino
5515 << " != " << realm
->inode
->ino() << dendl
;
5516 if (realm
->have_past_parents_open()) {
5517 // ok, include in a split message _now_.
5518 prepare_realm_split(realm
, q
->first
, in
->ino(), splits
);
5520 // send the split later.
5521 missing_snap_parent
= true;
5525 if (missing_snap_parent
)
5526 missing_snap_parents
[realm
->inode
].insert(in
);
5533 void MDCache::prepare_realm_split(SnapRealm
*realm
, client_t client
, inodeno_t ino
,
5534 map
<client_t
,MClientSnap
*>& splits
)
5537 if (splits
.count(client
) == 0) {
5538 splits
[client
] = snap
= new MClientSnap(CEPH_SNAP_OP_SPLIT
);
5539 snap
->head
.split
= realm
->inode
->ino();
5540 realm
->build_snap_trace(snap
->bl
);
5542 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
5543 p
!= realm
->open_children
.end();
5545 snap
->split_realms
.push_back((*p
)->inode
->ino());
5548 snap
= splits
[client
];
5549 snap
->split_inos
.push_back(ino
);
5552 void MDCache::send_snaps(map
<client_t
,MClientSnap
*>& splits
)
5554 dout(10) << "send_snaps" << dendl
;
5556 for (map
<client_t
,MClientSnap
*>::iterator p
= splits
.begin();
5559 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->first
.v
));
5561 dout(10) << " client." << p
->first
5562 << " split " << p
->second
->head
.split
5563 << " inos " << p
->second
->split_inos
5565 mds
->send_message_client_counted(p
->second
, session
);
5567 dout(10) << " no session for client." << p
->first
<< dendl
;
5576 * remove any items from logsegment open_file lists that don't have
5579 void MDCache::clean_open_file_lists()
5581 dout(10) << "clean_open_file_lists" << dendl
;
5583 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
5584 p
!= mds
->mdlog
->segments
.end();
5586 LogSegment
*ls
= p
->second
;
5588 elist
<CInode
*>::iterator q
= ls
->open_files
.begin(member_offset(CInode
, item_open_file
));
5592 if (in
->last
== CEPH_NOSNAP
) {
5593 if (!in
->is_any_caps_wanted()) {
5594 dout(10) << " unlisting unwanted/capless inode " << *in
<< dendl
;
5595 in
->item_open_file
.remove_myself();
5597 } else if (in
->last
!= CEPH_NOSNAP
) {
5598 if (in
->client_snap_caps
.empty()) {
5599 dout(10) << " unlisting flushed snap inode " << *in
<< dendl
;
5600 in
->item_open_file
.remove_myself();
5609 Capability
* MDCache::rejoin_import_cap(CInode
*in
, client_t client
, const cap_reconnect_t
& icr
, mds_rank_t frommds
)
5611 dout(10) << "rejoin_import_cap for client." << client
<< " from mds." << frommds
5612 << " on " << *in
<< dendl
;
5613 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5615 dout(10) << " no session for client." << client
<< dendl
;
5619 Capability
*cap
= in
->reconnect_cap(client
, icr
, session
);
5622 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5624 do_cap_import(session
, in
, cap
, icr
.capinfo
.cap_id
, 0, 0, frommds
, 0);
5630 void MDCache::export_remaining_imported_caps()
5632 dout(10) << "export_remaining_imported_caps" << dendl
;
5634 stringstream warn_str
;
5636 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5637 warn_str
<< " ino " << p
->first
<< "\n";
5638 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5639 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5641 // mark client caps stale.
5642 MClientCaps
*stale
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0, 0, 0, mds
->get_osd_epoch_barrier());
5643 stale
->set_cap_peer(0, 0, 0, -1, 0);
5644 mds
->send_message_client_counted(stale
, q
->first
);
5648 mds
->heartbeat_reset();
5651 for (map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator p
= cap_reconnect_waiters
.begin();
5652 p
!= cap_reconnect_waiters
.end();
5654 mds
->queue_waiters(p
->second
);
5656 cap_imports
.clear();
5657 cap_reconnect_waiters
.clear();
5659 if (warn_str
.peek() != EOF
) {
5660 mds
->clog
->warn() << "failed to reconnect caps for missing inodes:";
5661 mds
->clog
->warn(warn_str
);
5665 void MDCache::try_reconnect_cap(CInode
*in
, Session
*session
)
5667 client_t client
= session
->info
.get_client();
5668 const cap_reconnect_t
*rc
= get_replay_cap_reconnect(in
->ino(), client
);
5670 in
->reconnect_cap(client
, *rc
, session
);
5671 dout(10) << "try_reconnect_cap client." << client
5672 << " reconnect wanted " << ccap_string(rc
->capinfo
.wanted
)
5673 << " issue " << ccap_string(rc
->capinfo
.issued
)
5674 << " on " << *in
<< dendl
;
5675 remove_replay_cap_reconnect(in
->ino(), client
);
5677 if (in
->is_replicated()) {
5678 mds
->locker
->try_eval(in
, CEPH_CAP_LOCKS
);
5681 auto p
= reconnected_caps
.find(in
->ino());
5682 if (p
!= reconnected_caps
.end()) {
5683 auto q
= p
->second
.find(client
);
5684 if (q
!= p
->second
.end())
5685 dirty_caps
= q
->second
.dirty_caps
;
5687 in
->choose_lock_states(dirty_caps
);
5688 dout(15) << " chose lock states on " << *in
<< dendl
;
5691 map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator it
=
5692 cap_reconnect_waiters
.find(in
->ino());
5693 if (it
!= cap_reconnect_waiters
.end()) {
5694 mds
->queue_waiters(it
->second
);
5695 cap_reconnect_waiters
.erase(it
);
5703 // cap imports and delayed snap parent opens
5705 void MDCache::do_cap_import(Session
*session
, CInode
*in
, Capability
*cap
,
5706 uint64_t p_cap_id
, ceph_seq_t p_seq
, ceph_seq_t p_mseq
,
5707 int peer
, int p_flags
)
5709 client_t client
= session
->info
.inst
.name
.num();
5710 SnapRealm
*realm
= in
->find_snaprealm();
5711 if (realm
->have_past_parents_open()) {
5712 dout(10) << "do_cap_import " << session
->info
.inst
.name
<< " mseq " << cap
->get_mseq() << " on " << *in
<< dendl
;
5713 if (cap
->get_last_seq() == 0) // reconnected cap
5714 cap
->inc_last_seq();
5715 cap
->set_last_issue();
5716 cap
->set_last_issue_stamp(ceph_clock_now());
5718 MClientCaps
*reap
= new MClientCaps(CEPH_CAP_OP_IMPORT
,
5720 realm
->inode
->ino(),
5721 cap
->get_cap_id(), cap
->get_last_seq(),
5722 cap
->pending(), cap
->wanted(), 0,
5723 cap
->get_mseq(), mds
->get_osd_epoch_barrier());
5724 in
->encode_cap_message(reap
, cap
);
5725 realm
->build_snap_trace(reap
->snapbl
);
5726 reap
->set_cap_peer(p_cap_id
, p_seq
, p_mseq
, peer
, p_flags
);
5727 mds
->send_message_client_counted(reap
, session
);
5729 dout(10) << "do_cap_import missing past snap parents, delaying " << session
->info
.inst
.name
<< " mseq "
5730 << cap
->get_mseq() << " on " << *in
<< dendl
;
5732 cap
->inc_suppress();
5733 delayed_imported_caps
[client
].insert(in
);
5734 missing_snap_parents
[in
].size();
5738 void MDCache::do_delayed_cap_imports()
5740 dout(10) << "do_delayed_cap_imports" << dendl
;
5742 assert(delayed_imported_caps
.empty());
5745 struct C_MDC_OpenSnapParents
: public MDCacheContext
{
5746 explicit C_MDC_OpenSnapParents(MDCache
*c
) : MDCacheContext(c
) {}
5747 void finish(int r
) override
{
5748 mdcache
->open_snap_parents();
5752 void MDCache::open_snap_parents()
5754 dout(10) << "open_snap_parents" << dendl
;
5756 map
<client_t
,MClientSnap
*> splits
;
5757 MDSGatherBuilder
gather(g_ceph_context
);
5759 auto p
= missing_snap_parents
.begin();
5760 while (p
!= missing_snap_parents
.end()) {
5761 CInode
*in
= p
->first
;
5762 assert(in
->snaprealm
);
5763 if (in
->snaprealm
->open_parents(gather
.new_sub())) {
5764 dout(10) << " past parents now open on " << *in
<< dendl
;
5766 for (CInode
*child
: p
->second
) {
5767 auto q
= reconnected_caps
.find(child
->ino());
5768 assert(q
!= reconnected_caps
.end());
5769 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5770 if (r
->second
.snap_follows
> 0 && r
->second
.snap_follows
< in
->first
- 1) {
5771 rebuild_need_snapflush(child
, in
->snaprealm
, r
->first
, r
->second
.snap_follows
);
5773 // make sure client's cap is in the correct snaprealm.
5774 if (r
->second
.realm_ino
!= in
->ino()) {
5775 prepare_realm_split(in
->snaprealm
, r
->first
, child
->ino(), splits
);
5780 missing_snap_parents
.erase(p
++);
5782 in
->put(CInode::PIN_OPENINGSNAPPARENTS
);
5784 // finish off client snaprealm reconnects?
5785 map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator q
= reconnected_snaprealms
.find(in
->ino());
5786 if (q
!= reconnected_snaprealms
.end()) {
5787 for (map
<client_t
,snapid_t
>::iterator r
= q
->second
.begin();
5788 r
!= q
->second
.end();
5790 finish_snaprealm_reconnect(r
->first
, in
->snaprealm
, r
->second
);
5791 reconnected_snaprealms
.erase(q
);
5794 dout(10) << " opening past parents on " << *in
<< dendl
;
5801 if (gather
.has_subs()) {
5802 dout(10) << "open_snap_parents - waiting for "
5803 << gather
.num_subs_remaining() << dendl
;
5804 gather
.set_finisher(new C_MDC_OpenSnapParents(this));
5807 if (!reconnected_snaprealms
.empty()) {
5808 stringstream warn_str
;
5809 for (map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator p
= reconnected_snaprealms
.begin();
5810 p
!= reconnected_snaprealms
.end();
5812 warn_str
<< " unconnected snaprealm " << p
->first
<< "\n";
5813 for (map
<client_t
,snapid_t
>::iterator q
= p
->second
.begin();
5814 q
!= p
->second
.end();
5816 warn_str
<< " client." << q
->first
<< " snapid " << q
->second
<< "\n";
5818 mds
->clog
->warn() << "open_snap_parents has:";
5819 mds
->clog
->warn(warn_str
);
5821 assert(rejoin_waiters
.empty());
5822 assert(missing_snap_parents
.empty());
5823 dout(10) << "open_snap_parents - all open" << dendl
;
5824 do_delayed_cap_imports();
5826 assert(rejoin_done
);
5827 rejoin_done
.release()->complete(0);
5828 reconnected_caps
.clear();
5832 bool MDCache::open_undef_inodes_dirfrags()
5834 dout(10) << "open_undef_inodes_dirfrags "
5835 << rejoin_undef_inodes
.size() << " inodes "
5836 << rejoin_undef_dirfrags
.size() << " dirfrags" << dendl
;
5838 set
<CDir
*> fetch_queue
= rejoin_undef_dirfrags
;
5840 for (set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5841 p
!= rejoin_undef_inodes
.end();
5844 assert(!in
->is_base());
5845 fetch_queue
.insert(in
->get_parent_dir());
5848 if (fetch_queue
.empty())
5851 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_RejoinGatherFinish(this));
5852 for (set
<CDir
*>::iterator p
= fetch_queue
.begin();
5853 p
!= fetch_queue
.end();
5856 CInode
*diri
= dir
->get_inode();
5857 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
5859 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
5860 assert(diri
->dirfragtree
.is_leaf(dir
->get_frag()));
5861 dir
->fetch(gather
.new_sub());
5863 assert(gather
.has_subs());
5868 void MDCache::opened_undef_inode(CInode
*in
) {
5869 dout(10) << "opened_undef_inode " << *in
<< dendl
;
5870 rejoin_undef_inodes
.erase(in
);
5872 // FIXME: re-hash dentries if necessary
5873 assert(in
->inode
.dir_layout
.dl_dir_hash
== g_conf
->mds_default_dir_hash
);
5874 if (in
->has_dirfrags() && !in
->dirfragtree
.is_leaf(frag_t())) {
5875 CDir
*dir
= in
->get_dirfrag(frag_t());
5877 rejoin_undef_dirfrags
.erase(dir
);
5878 in
->force_dirfrags();
5880 in
->get_dirfrags(ls
);
5881 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
)
5882 rejoin_undef_dirfrags
.insert(*p
);
5887 void MDCache::finish_snaprealm_reconnect(client_t client
, SnapRealm
*realm
, snapid_t seq
)
5889 if (seq
< realm
->get_newest_seq()) {
5890 dout(10) << "finish_snaprealm_reconnect client." << client
<< " has old seq " << seq
<< " < "
5891 << realm
->get_newest_seq()
5892 << " on " << *realm
<< dendl
;
5894 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5896 MClientSnap
*snap
= new MClientSnap(CEPH_SNAP_OP_UPDATE
);
5897 realm
->build_snap_trace(snap
->bl
);
5898 mds
->send_message_client_counted(snap
, session
);
5900 dout(10) << " ...or not, no session for this client!" << dendl
;
5903 dout(10) << "finish_snaprealm_reconnect client." << client
<< " up to date"
5904 << " on " << *realm
<< dendl
;
5910 void MDCache::rejoin_send_acks()
5912 dout(7) << "rejoin_send_acks" << dendl
;
5915 for (map
<mds_rank_t
, set
<CInode
*> >::iterator p
= rejoin_unlinked_inodes
.begin();
5916 p
!= rejoin_unlinked_inodes
.end();
5918 for (set
<CInode
*>::iterator q
= p
->second
.begin();
5919 q
!= p
->second
.end();
5922 dout(7) << " unlinked inode " << *in
<< dendl
;
5924 if (!in
->is_replica(p
->first
))
5927 CDentry
*dn
= in
->get_parent_dn();
5928 if (dn
->is_replica(p
->first
))
5930 dn
->add_replica(p
->first
);
5931 CDir
*dir
= dn
->get_dir();
5932 if (dir
->is_replica(p
->first
))
5934 dir
->add_replica(p
->first
);
5935 in
= dir
->get_inode();
5936 if (in
->is_replica(p
->first
))
5938 in
->add_replica(p
->first
);
5944 rejoin_unlinked_inodes
.clear();
5946 // send acks to everyone in the recovery set
5947 map
<mds_rank_t
,MMDSCacheRejoin
*> acks
;
5948 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
5949 p
!= recovery_set
.end();
5951 if (rejoin_ack_sent
.count(*p
))
5953 acks
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
5956 rejoin_ack_sent
= recovery_set
;
5959 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
5960 p
!= subtrees
.end();
5962 CDir
*dir
= p
->first
;
5963 if (!dir
->is_auth())
5965 dout(10) << "subtree " << *dir
<< dendl
;
5967 // auth items in this subtree
5971 while (!dq
.empty()) {
5972 CDir
*dir
= dq
.front();
5976 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= dir
->replicas_begin();
5977 r
!= dir
->replicas_end();
5979 auto it
= acks
.find(r
->first
);
5980 if (it
== acks
.end())
5982 it
->second
->add_strong_dirfrag(dir
->dirfrag(), ++r
->second
, dir
->dir_rep
);
5983 it
->second
->add_dirfrag_base(dir
);
5986 for (CDir::map_t::iterator q
= dir
->items
.begin();
5987 q
!= dir
->items
.end();
5989 CDentry
*dn
= q
->second
;
5990 CDentry::linkage_t
*dnl
= dn
->get_linkage();
5994 if (dnl
->is_primary())
5995 in
= dnl
->get_inode();
5998 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= dn
->replicas_begin();
5999 r
!= dn
->replicas_end();
6001 auto it
= acks
.find(r
->first
);
6002 if (it
== acks
.end())
6004 it
->second
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
6005 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
6006 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
6007 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
6009 dn
->lock
.get_replica_state());
6010 // peer missed MDentrylink message ?
6011 if (in
&& !in
->is_replica(r
->first
))
6012 in
->add_replica(r
->first
);
6018 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= in
->replicas_begin();
6019 r
!= in
->replicas_end();
6021 auto it
= acks
.find(r
->first
);
6022 if (it
== acks
.end())
6024 it
->second
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
6026 in
->_encode_locks_state_for_rejoin(bl
, r
->first
);
6027 it
->second
->add_inode_locks(in
, ++r
->second
, bl
);
6030 // subdirs in this subtree?
6031 in
->get_nested_dirfrags(dq
);
6037 if (root
&& root
->is_auth())
6038 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= root
->replicas_begin();
6039 r
!= root
->replicas_end();
6041 auto it
= acks
.find(r
->first
);
6042 if (it
== acks
.end())
6044 it
->second
->add_inode_base(root
, mds
->mdsmap
->get_up_features());
6046 root
->_encode_locks_state_for_rejoin(bl
, r
->first
);
6047 it
->second
->add_inode_locks(root
, ++r
->second
, bl
);
6050 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= myin
->replicas_begin();
6051 r
!= myin
->replicas_end();
6053 auto it
= acks
.find(r
->first
);
6054 if (it
== acks
.end())
6056 it
->second
->add_inode_base(myin
, mds
->mdsmap
->get_up_features());
6058 myin
->_encode_locks_state_for_rejoin(bl
, r
->first
);
6059 it
->second
->add_inode_locks(myin
, ++r
->second
, bl
);
6062 // include inode base for any inodes whose scatterlocks may have updated
6063 for (set
<CInode
*>::iterator p
= rejoin_potential_updated_scatterlocks
.begin();
6064 p
!= rejoin_potential_updated_scatterlocks
.end();
6067 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= in
->replicas_begin();
6068 r
!= in
->replicas_end();
6070 auto it
= acks
.find(r
->first
);
6071 if (it
== acks
.end())
6073 it
->second
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
6078 for (auto p
= acks
.begin(); p
!= acks
.end(); ++p
) {
6079 ::encode(rejoin_imported_caps
[p
->first
], p
->second
->imported_caps
);
6080 mds
->send_message_mds(p
->second
, p
->first
);
6083 rejoin_imported_caps
.clear();
6087 void MDCache::reissue_all_caps()
6089 dout(10) << "reissue_all_caps" << dendl
;
6091 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
6092 p
!= inode_map
.end();
6094 CInode
*in
= p
->second
;
6095 if (in
->is_head() && in
->is_any_caps()) {
6096 if (!mds
->locker
->eval(in
, CEPH_CAP_LOCKS
))
6097 mds
->locker
->issue_caps(in
);
6103 // ===============================================================================
6105 struct C_MDC_QueuedCow
: public MDCacheContext
{
6108 C_MDC_QueuedCow(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) :
6109 MDCacheContext(mdc
), in(i
), mut(m
) {}
6110 void finish(int r
) override
{
6111 mdcache
->_queued_file_recover_cow(in
, mut
);
6116 void MDCache::queue_file_recover(CInode
*in
)
6118 dout(10) << "queue_file_recover " << *in
<< dendl
;
6119 assert(in
->is_auth());
6123 SnapRealm *realm = in->find_snaprealm();
6124 set<snapid_t> s = realm->get_snaps();
6125 while (!s.empty() && *s.begin() < in->first)
6127 while (!s.empty() && *s.rbegin() > in->last)
6128 s.erase(*s.rbegin());
6129 dout(10) << " snaps in [" << in->first << "," << in->last << "] are " << s << dendl;
6131 inode_t *pi = in->project_inode();
6132 pi->version = in->pre_dirty();
6134 auto mut(std::make_shared<MutationImpl>());
6135 mut->ls = mds->mdlog->get_current_segment();
6136 EUpdate *le = new EUpdate(mds->mdlog, "queue_file_recover cow");
6137 mds->mdlog->start_entry(le);
6138 predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY);
6140 s.erase(*s.begin());
6141 while (!s.empty()) {
6142 snapid_t snapid = *s.begin();
6143 CInode *cow_inode = 0;
6144 journal_cow_inode(mut, &le->metablob, in, snapid-1, &cow_inode);
6146 recovery_queue.enqueue(cow_inode);
6147 s.erase(*s.begin());
6150 in->parent->first = in->first;
6151 le->metablob.add_primary_dentry(in->parent, in, true);
6152 mds->mdlog->submit_entry(le, new C_MDC_QueuedCow(this, in, mut));
6153 mds->mdlog->flush();
6157 recovery_queue
.enqueue(in
);
6160 void MDCache::_queued_file_recover_cow(CInode
*in
, MutationRef
& mut
)
6162 in
->pop_and_dirty_projected_inode(mut
->ls
);
6164 mds
->locker
->drop_locks(mut
.get());
6170 * called after recovery to recover file sizes for previously opened (for write)
6171 * files. that is, those where max_size > size.
6173 void MDCache::identify_files_to_recover()
6175 dout(10) << "identify_files_to_recover" << dendl
;
6176 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
6177 p
!= inode_map
.end();
6179 CInode
*in
= p
->second
;
6183 if (in
->last
!= CEPH_NOSNAP
)
6186 // Only normal files need file size recovery
6187 if (!in
->is_file()) {
6191 bool recover
= false;
6192 for (map
<client_t
,client_writeable_range_t
>::iterator p
= in
->inode
.client_ranges
.begin();
6193 p
!= in
->inode
.client_ranges
.end();
6195 Capability
*cap
= in
->get_client_cap(p
->first
);
6197 dout(10) << " client." << p
->first
<< " has range " << p
->second
<< " but no cap on " << *in
<< dendl
;
6204 if (in
->filelock
.is_stable()) {
6205 in
->auth_pin(&in
->filelock
);
6207 assert(in
->filelock
.get_state() == LOCK_XLOCKSNAP
);
6209 in
->filelock
.set_state(LOCK_PRE_SCAN
);
6210 rejoin_recover_q
.push_back(in
);
6212 rejoin_check_q
.push_back(in
);
6217 void MDCache::start_files_to_recover()
6219 for (CInode
*in
: rejoin_check_q
) {
6220 if (in
->filelock
.get_state() == LOCK_XLOCKSNAP
)
6221 mds
->locker
->issue_caps(in
);
6222 mds
->locker
->check_inode_max_size(in
);
6224 rejoin_check_q
.clear();
6225 for (CInode
*in
: rejoin_recover_q
) {
6226 mds
->locker
->file_recover(&in
->filelock
);
6228 if (!rejoin_recover_q
.empty()) {
6229 rejoin_recover_q
.clear();
6234 void MDCache::do_file_recover()
6236 recovery_queue
.advance();
6239 // ===============================================================================
6242 // ----------------------------
6245 class C_MDC_RetryTruncate
: public MDCacheContext
{
6249 C_MDC_RetryTruncate(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6250 MDCacheContext(c
), in(i
), ls(l
) {}
6251 void finish(int r
) override
{
6252 mdcache
->_truncate_inode(in
, ls
);
6256 void MDCache::truncate_inode(CInode
*in
, LogSegment
*ls
)
6258 inode_t
*pi
= in
->get_projected_inode();
6259 dout(10) << "truncate_inode "
6260 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6264 ls
->truncating_inodes
.insert(in
);
6265 in
->get(CInode::PIN_TRUNCATING
);
6268 if (!in
->client_need_snapflush
.empty() &&
6269 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6270 assert(in
->filelock
.is_xlocked());
6271 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6272 mds
->locker
->issue_caps(in
);
6276 _truncate_inode(in
, ls
);
6279 struct C_IO_MDC_TruncateFinish
: public MDCacheIOContext
{
6282 C_IO_MDC_TruncateFinish(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6283 MDCacheIOContext(c
), in(i
), ls(l
) {}
6284 void finish(int r
) override
{
6285 assert(r
== 0 || r
== -ENOENT
);
6286 mdcache
->truncate_inode_finish(in
, ls
);
6290 void MDCache::_truncate_inode(CInode
*in
, LogSegment
*ls
)
6292 inode_t
*pi
= &in
->inode
;
6293 dout(10) << "_truncate_inode "
6294 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6295 << " on " << *in
<< dendl
;
6297 assert(pi
->is_truncating());
6298 assert(pi
->truncate_size
< (1ULL << 63));
6299 assert(pi
->truncate_from
< (1ULL << 63));
6300 assert(pi
->truncate_size
< pi
->truncate_from
);
6303 SnapRealm
*realm
= in
->find_snaprealm();
6304 SnapContext nullsnap
;
6305 const SnapContext
*snapc
;
6307 dout(10) << " realm " << *realm
<< dendl
;
6308 snapc
= &realm
->get_snap_context();
6310 dout(10) << " NO realm, using null context" << dendl
;
6312 assert(in
->last
== CEPH_NOSNAP
);
6314 dout(10) << "_truncate_inode snapc " << snapc
<< " on " << *in
<< dendl
;
6315 filer
.truncate(in
->inode
.ino
, &in
->inode
.layout
, *snapc
,
6316 pi
->truncate_size
, pi
->truncate_from
-pi
->truncate_size
,
6317 pi
->truncate_seq
, ceph::real_time::min(), 0,
6318 new C_OnFinisher(new C_IO_MDC_TruncateFinish(this, in
, ls
),
6322 struct C_MDC_TruncateLogged
: public MDCacheLogContext
{
6325 C_MDC_TruncateLogged(MDCache
*m
, CInode
*i
, MutationRef
& mu
) :
6326 MDCacheLogContext(m
), in(i
), mut(mu
) {}
6327 void finish(int r
) override
{
6328 mdcache
->truncate_inode_logged(in
, mut
);
6332 void MDCache::truncate_inode_finish(CInode
*in
, LogSegment
*ls
)
6334 dout(10) << "truncate_inode_finish " << *in
<< dendl
;
6336 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6337 assert(p
!= ls
->truncating_inodes
.end());
6338 ls
->truncating_inodes
.erase(p
);
6341 inode_t
*pi
= in
->project_inode();
6342 pi
->version
= in
->pre_dirty();
6343 pi
->truncate_from
= 0;
6344 pi
->truncate_pending
--;
6346 MutationRef
mut(new MutationImpl());
6347 mut
->ls
= mds
->mdlog
->get_current_segment();
6348 mut
->add_projected_inode(in
);
6350 EUpdate
*le
= new EUpdate(mds
->mdlog
, "truncate finish");
6351 mds
->mdlog
->start_entry(le
);
6352 CDentry
*dn
= in
->get_projected_parent_dn();
6353 le
->metablob
.add_dir_context(dn
->get_dir());
6354 le
->metablob
.add_primary_dentry(dn
, in
, true);
6355 le
->metablob
.add_truncate_finish(in
->ino(), ls
->seq
);
6357 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
6358 mds
->mdlog
->submit_entry(le
, new C_MDC_TruncateLogged(this, in
, mut
));
6360 // flush immediately if there are readers/writers waiting
6361 if (in
->is_waiter_for(CInode::WAIT_TRUNC
) ||
6362 (in
->get_caps_wanted() & (CEPH_CAP_FILE_RD
|CEPH_CAP_FILE_WR
)))
6363 mds
->mdlog
->flush();
6366 void MDCache::truncate_inode_logged(CInode
*in
, MutationRef
& mut
)
6368 dout(10) << "truncate_inode_logged " << *in
<< dendl
;
6370 mds
->locker
->drop_locks(mut
.get());
6373 in
->put(CInode::PIN_TRUNCATING
);
6374 in
->auth_unpin(this);
6376 list
<MDSInternalContextBase
*> waiters
;
6377 in
->take_waiting(CInode::WAIT_TRUNC
, waiters
);
6378 mds
->queue_waiters(waiters
);
6382 void MDCache::add_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6384 dout(20) << "add_recovered_truncate " << *in
<< " in log segment "
6385 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6386 ls
->truncating_inodes
.insert(in
);
6387 in
->get(CInode::PIN_TRUNCATING
);
6390 void MDCache::remove_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6392 dout(20) << "remove_recovered_truncate " << *in
<< " in log segment "
6393 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6394 // if we have the logseg the truncate started in, it must be in our list.
6395 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6396 assert(p
!= ls
->truncating_inodes
.end());
6397 ls
->truncating_inodes
.erase(p
);
6398 in
->put(CInode::PIN_TRUNCATING
);
6401 void MDCache::start_recovered_truncates()
6403 dout(10) << "start_recovered_truncates" << dendl
;
6404 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
6405 p
!= mds
->mdlog
->segments
.end();
6407 LogSegment
*ls
= p
->second
;
6408 for (set
<CInode
*>::iterator q
= ls
->truncating_inodes
.begin();
6409 q
!= ls
->truncating_inodes
.end();
6414 if (!in
->client_need_snapflush
.empty() &&
6415 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6416 assert(in
->filelock
.is_stable());
6417 in
->filelock
.set_state(LOCK_XLOCKDONE
);
6418 in
->auth_pin(&in
->filelock
);
6419 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6420 // start_files_to_recover will revoke caps
6423 _truncate_inode(in
, ls
);
6433 // ================================================================================
6438 * note: only called while MDS is active or stopping... NOT during recovery.
6439 * however, we may expire a replica whose authority is recovering.
6442 bool MDCache::trim(int max
, int count
)
6446 max
= lru
.lru_get_size() - count
;
6449 } else if (max
< 0) {
6450 max
= g_conf
->mds_cache_size
;
6454 dout(7) << "trim max=" << max
<< " cur=" << lru
.lru_get_size()
6455 << "/" << bottom_lru
.lru_get_size() << dendl
;
6457 // process delayed eval_stray()
6458 stray_manager
.advance_delayed();
6460 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
6461 bool is_standby_replay
= mds
->is_standby_replay();
6462 int unexpirable
= 0;
6463 list
<CDentry
*> unexpirables
;
6466 CDentry
*dn
= static_cast<CDentry
*>(bottom_lru
.lru_expire());
6469 if (trim_dentry(dn
, expiremap
)) {
6470 unexpirables
.push_back(dn
);
6475 for(auto dn
: unexpirables
)
6476 bottom_lru
.lru_insert_mid(dn
);
6477 unexpirables
.clear();
6479 // trim dentries from the LRU: only enough to satisfy `max`,
6480 while (lru
.lru_get_size() + unexpirable
> (unsigned)max
) {
6481 CDentry
*dn
= static_cast<CDentry
*>(lru
.lru_expire());
6485 if ((is_standby_replay
&& dn
->get_linkage()->inode
&&
6486 dn
->get_linkage()->inode
->item_open_file
.is_on_list()) ||
6487 trim_dentry(dn
, expiremap
)) {
6488 unexpirables
.push_back(dn
);
6492 for(auto dn
: unexpirables
)
6493 lru
.lru_insert_mid(dn
);
6494 unexpirables
.clear();
6496 // trim non-auth, non-bound subtrees
6497 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6498 p
!= subtrees
.end();) {
6499 CDir
*dir
= p
->first
;
6501 CInode
*diri
= dir
->get_inode();
6502 if (dir
->is_auth()) {
6503 if (!diri
->is_auth() && !diri
->is_base() &&
6504 dir
->get_num_head_items() == 0) {
6505 if (dir
->state_test(CDir::STATE_EXPORTING
) ||
6506 dir
->is_freezing() || dir
->is_frozen())
6509 migrator
->export_empty_import(dir
);
6512 if (!diri
->is_auth()) {
6513 if (dir
->get_num_ref() > 1) // only subtree pin
6516 diri
->get_subtree_dirfrags(ls
);
6517 if (diri
->get_num_ref() > (int)ls
.size()) // only pinned by subtrees
6520 // don't trim subtree root if its auth MDS is recovering.
6521 // This simplify the cache rejoin code.
6522 if (dir
->is_subtree_root() &&
6523 rejoin_ack_gather
.count(dir
->get_dir_auth().first
))
6525 trim_dirfrag(dir
, 0, expiremap
);
6531 if (max
== 0 && root
) {
6533 root
->get_dirfrags(ls
);
6534 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6536 if (dir
->get_num_ref() == 1) // subtree pin
6537 trim_dirfrag(dir
, 0, expiremap
);
6539 if (root
->get_num_ref() == 0)
6540 trim_inode(0, root
, 0, expiremap
);
6543 std::set
<mds_rank_t
> stopping
;
6544 mds
->mdsmap
->get_mds_set(stopping
, MDSMap::STATE_STOPPING
);
6545 stopping
.erase(mds
->get_nodeid());
6546 for (auto rank
: stopping
) {
6547 CInode
* mdsdir_in
= get_inode(MDS_INO_MDSDIR(rank
));
6551 if (expiremap
.count(rank
) == 0) {
6552 expiremap
[rank
] = new MCacheExpire(mds
->get_nodeid());
6555 dout(20) << __func__
<< ": try expiring " << *mdsdir_in
<< " for stopping mds." << mds
<< dendl
;
6557 const bool aborted
= expire_recursive(mdsdir_in
, expiremap
);
6559 dout(20) << __func__
<< ": successfully expired mdsdir" << dendl
;
6561 mdsdir_in
->get_dirfrags(ls
);
6562 for (auto dir
: ls
) {
6563 if (dir
->get_num_ref() == 1) // subtree pin
6564 trim_dirfrag(dir
, dir
, expiremap
);
6566 if (mdsdir_in
->get_num_ref() == 0)
6567 trim_inode(NULL
, mdsdir_in
, NULL
, expiremap
);
6569 dout(20) << __func__
<< ": some unexpirable contents in mdsdir" << dendl
;
6573 // Other rank's base inodes (when I'm stopping)
6575 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
6576 p
!= base_inodes
.end(); ++p
) {
6577 if (MDS_INO_MDSDIR_OWNER((*p
)->ino()) != mds
->get_nodeid()) {
6578 dout(20) << __func__
<< ": maybe trimming base: " << *(*p
) << dendl
;
6579 if ((*p
)->get_num_ref() == 0) {
6580 trim_inode(NULL
, *p
, NULL
, expiremap
);
6586 // send any expire messages
6587 send_expire_messages(expiremap
);
6592 void MDCache::send_expire_messages(map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6595 for (map
<mds_rank_t
, MCacheExpire
*>::iterator it
= expiremap
.begin();
6596 it
!= expiremap
.end();
6598 if (mds
->is_cluster_degraded() &&
6599 (mds
->mdsmap
->get_state(it
->first
) < MDSMap::STATE_REJOIN
||
6600 (mds
->mdsmap
->get_state(it
->first
) == MDSMap::STATE_REJOIN
&&
6601 rejoin_sent
.count(it
->first
) == 0))) {
6605 dout(7) << "sending cache_expire to " << it
->first
<< dendl
;
6606 mds
->send_message_mds(it
->second
, it
->first
);
6611 bool MDCache::trim_dentry(CDentry
*dn
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6613 dout(12) << "trim_dentry " << *dn
<< dendl
;
6615 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6617 CDir
*dir
= dn
->get_dir();
6620 CDir
*con
= get_subtree_root(dir
);
6622 dout(12) << " in container " << *con
<< dendl
;
6624 dout(12) << " no container; under a not-yet-linked dir" << dendl
;
6625 assert(dn
->is_auth());
6628 // If replica dentry is not readable, it's likely we will receive
6629 // MDentryLink/MDentryUnlink message soon (It's possible we first
6630 // receive a MDentryUnlink message, then MDentryLink message)
6631 // MDentryLink message only replicates an inode, so we should
6632 // avoid trimming the inode's parent dentry. This is because that
6633 // unconnected replicas are problematic for subtree migration.
6634 if (!dn
->is_auth() && !dn
->lock
.can_read(-1) &&
6635 !dn
->get_dir()->get_inode()->is_stray())
6638 // adjust the dir state
6639 // NOTE: we can safely remove a clean, null dentry without effecting
6640 // directory completeness.
6641 // (check this _before_ we unlink the inode, below!)
6642 bool clear_complete
= false;
6643 if (!(dnl
->is_null() && dn
->is_clean()))
6644 clear_complete
= true;
6646 // unlink the dentry
6647 if (dnl
->is_remote()) {
6649 dir
->unlink_inode(dn
, false);
6650 } else if (dnl
->is_primary()) {
6651 // expire the inode, too.
6652 CInode
*in
= dnl
->get_inode();
6654 if (trim_inode(dn
, in
, con
, expiremap
))
6655 return true; // purging stray instead of trimming
6657 assert(dnl
->is_null());
6660 if (!dn
->is_auth()) {
6661 // notify dentry authority.
6662 mds_authority_t auth
= dn
->authority();
6664 for (int p
=0; p
<2; p
++) {
6665 mds_rank_t a
= auth
.first
;
6666 if (p
) a
= auth
.second
;
6667 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6668 if (mds
->get_nodeid() == auth
.second
&&
6669 con
->is_importing()) break; // don't send any expire while importing.
6670 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6672 dout(12) << " sending expire to mds." << a
<< " on " << *dn
<< dendl
;
6673 assert(a
!= mds
->get_nodeid());
6674 if (expiremap
.count(a
) == 0)
6675 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6676 expiremap
[a
]->add_dentry(con
->dirfrag(), dir
->dirfrag(), dn
->name
, dn
->last
, dn
->get_replica_nonce());
6681 if (dn
->last
== CEPH_NOSNAP
&& dir
->is_auth())
6682 dir
->add_to_bloom(dn
);
6683 dir
->remove_dentry(dn
);
6686 dir
->state_clear(CDir::STATE_COMPLETE
);
6688 if (mds
->logger
) mds
->logger
->inc(l_mds_inodes_expired
);
6693 void MDCache::trim_dirfrag(CDir
*dir
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6695 dout(15) << "trim_dirfrag " << *dir
<< dendl
;
6697 if (dir
->is_subtree_root()) {
6698 assert(!dir
->is_auth() ||
6699 (!dir
->is_replicated() && dir
->inode
->is_base()));
6700 remove_subtree(dir
); // remove from subtree map
6702 assert(dir
->get_num_ref() == 0);
6704 CInode
*in
= dir
->get_inode();
6706 if (!dir
->is_auth()) {
6707 mds_authority_t auth
= dir
->authority();
6709 // was this an auth delegation? (if so, slightly modified container)
6711 if (dir
->is_subtree_root()) {
6712 dout(12) << " subtree root, container is " << *dir
<< dendl
;
6714 condf
= dir
->dirfrag();
6716 condf
= con
->dirfrag();
6719 for (int p
=0; p
<2; p
++) {
6720 mds_rank_t a
= auth
.first
;
6721 if (p
) a
= auth
.second
;
6722 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6723 if (mds
->get_nodeid() == auth
.second
&&
6724 con
->is_importing()) break; // don't send any expire while importing.
6725 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6727 dout(12) << " sending expire to mds." << a
<< " on " << *dir
<< dendl
;
6728 assert(a
!= mds
->get_nodeid());
6729 if (expiremap
.count(a
) == 0)
6730 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6731 expiremap
[a
]->add_dir(condf
, dir
->dirfrag(), dir
->replica_nonce
);
6735 in
->close_dirfrag(dir
->dirfrag().frag
);
6739 * Try trimming an inode from the cache
6741 * @return true if the inode is still in cache, else false if it was trimmed
6743 bool MDCache::trim_inode(CDentry
*dn
, CInode
*in
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6745 dout(15) << "trim_inode " << *in
<< dendl
;
6746 assert(in
->get_num_ref() == 0);
6749 // If replica inode's dirfragtreelock is not readable, it's likely
6750 // some dirfrags of the inode are being fragmented and we will receive
6751 // MMDSFragmentNotify soon. MMDSFragmentNotify only replicates the new
6752 // dirfrags, so we should avoid trimming these dirfrags' parent inode.
6753 // This is because that unconnected replicas are problematic for
6754 // subtree migration.
6756 if (!in
->is_auth() && !in
->dirfragtreelock
.can_read(-1))
6761 in
->get_dirfrags(dfls
);
6762 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
6764 assert(!dir
->is_subtree_root());
6765 trim_dirfrag(dir
, con
? con
:dir
, expiremap
); // if no container (e.g. root dirfrag), use *p
6770 if (in
->is_auth()) {
6771 // eval stray after closing dirfrags
6772 if (dn
&& !dn
->state_test(CDentry::STATE_PURGING
)) {
6773 maybe_eval_stray(in
);
6774 if (dn
->state_test(CDentry::STATE_PURGING
) || dn
->get_num_ref() > 0)
6778 mds_authority_t auth
= in
->authority();
6782 df
= con
->dirfrag();
6784 df
= dirfrag_t(0,frag_t()); // must be a root or stray inode.
6786 for (int p
=0; p
<2; p
++) {
6787 mds_rank_t a
= auth
.first
;
6788 if (p
) a
= auth
.second
;
6789 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6790 if (con
&& mds
->get_nodeid() == auth
.second
&&
6791 con
->is_importing()) break; // don't send any expire while importing.
6792 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6794 dout(12) << " sending expire to mds." << a
<< " on " << *in
<< dendl
;
6795 assert(a
!= mds
->get_nodeid());
6796 if (expiremap
.count(a
) == 0)
6797 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6798 expiremap
[a
]->add_inode(df
, in
->vino(), in
->get_replica_nonce());
6803 if (in->is_auth()) {
6804 if (in->hack_accessed)
6805 mds->logger->inc("outt");
6807 mds->logger->inc("outut");
6808 mds->logger->fset("oututl", ceph_clock_now() - in->hack_load_stamp);
6815 dn
->get_dir()->unlink_inode(dn
, false);
6822 * trim_non_auth - remove any non-auth items from our cache
6824 * this reduces the amount of non-auth metadata in our cache, reducing the
6825 * load incurred by the rejoin phase.
6827 * the only non-auth items that remain are those that are needed to
6828 * attach our own subtrees to the root.
6830 * when we are done, all dentries will be in the top bit of the lru.
6832 * why we have to do this:
6833 * we may not have accurate linkage for non-auth items. which means we will
6834 * know which subtree it falls into, and can not be sure to declare it to the
6835 * correct authority.
6837 void MDCache::trim_non_auth()
6839 dout(7) << "trim_non_auth" << dendl
;
6841 // temporarily pin all subtree roots
6842 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6843 p
!= subtrees
.end();
6845 p
->first
->get(CDir::PIN_SUBTREETEMP
);
6847 list
<CDentry
*> auth_list
;
6849 // trim non-auth items from the lru
6852 if (bottom_lru
.lru_get_size() > 0)
6853 dn
= static_cast<CDentry
*>(bottom_lru
.lru_expire());
6854 if (!dn
&& lru
.lru_get_size() > 0)
6855 dn
= static_cast<CDentry
*>(lru
.lru_expire());
6859 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6861 if (dn
->is_auth()) {
6862 // add back into lru (at the top)
6863 auth_list
.push_back(dn
);
6865 if (dnl
->is_remote() && dnl
->get_inode() && !dnl
->get_inode()->is_auth())
6866 dn
->unlink_remote(dnl
);
6868 // non-auth. expire.
6869 CDir
*dir
= dn
->get_dir();
6872 // unlink the dentry
6873 dout(10) << " removing " << *dn
<< dendl
;
6874 if (dnl
->is_remote()) {
6875 dir
->unlink_inode(dn
, false);
6877 else if (dnl
->is_primary()) {
6878 CInode
*in
= dnl
->get_inode();
6879 dout(10) << " removing " << *in
<< dendl
;
6881 in
->get_dirfrags(ls
);
6882 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6884 assert(!subdir
->is_subtree_root());
6885 in
->close_dirfrag(subdir
->dirfrag().frag
);
6887 dir
->unlink_inode(dn
, false);
6891 assert(dnl
->is_null());
6894 assert(!dir
->has_bloom());
6895 dir
->remove_dentry(dn
);
6896 // adjust the dir state
6897 dir
->state_clear(CDir::STATE_COMPLETE
); // dir incomplete!
6898 // close empty non-auth dirfrag
6899 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0)
6900 dir
->inode
->close_dirfrag(dir
->get_frag());
6904 for (auto dn
: auth_list
) {
6905 if (dn
->state_test(CDentry::STATE_BOTTOMLRU
))
6906 bottom_lru
.lru_insert_mid(dn
);
6908 lru
.lru_insert_top(dn
);
6911 // move everything in the pintail to the top bit of the lru.
6912 lru
.lru_touch_entire_pintail();
6914 // unpin all subtrees
6915 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6916 p
!= subtrees
.end();
6918 p
->first
->put(CDir::PIN_SUBTREETEMP
);
6920 if (lru
.lru_get_size() == 0 &&
6921 bottom_lru
.lru_get_size() == 0) {
6922 // root, stray, etc.?
6923 ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
6924 while (p
!= inode_map
.end()) {
6925 ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator next
= p
;
6927 CInode
*in
= p
->second
;
6928 if (!in
->is_auth()) {
6930 in
->get_dirfrags(ls
);
6931 for (list
<CDir
*>::iterator p
= ls
.begin();
6934 dout(10) << " removing " << **p
<< dendl
;
6935 assert((*p
)->get_num_ref() == 1); // SUBTREE
6936 remove_subtree((*p
));
6937 in
->close_dirfrag((*p
)->dirfrag().frag
);
6939 dout(10) << " removing " << *in
<< dendl
;
6940 assert(!in
->get_parent_dn());
6941 assert(in
->get_num_ref() == 0);
6952 * Recursively trim the subtree rooted at directory to remove all
6953 * CInodes/CDentrys/CDirs that aren't links to remote MDSes, or ancestors
6954 * of those links. This is used to clear invalid data out of the cache.
6955 * Note that it doesn't clear the passed-in directory, since that's not
6958 bool MDCache::trim_non_auth_subtree(CDir
*dir
)
6960 dout(10) << "trim_non_auth_subtree(" << dir
<< ") " << *dir
<< dendl
;
6962 bool keep_dir
= !can_trim_non_auth_dirfrag(dir
);
6964 CDir::map_t::iterator j
= dir
->begin();
6965 CDir::map_t::iterator i
= j
;
6966 while (j
!= dir
->end()) {
6968 CDentry
*dn
= i
->second
;
6969 dout(10) << "trim_non_auth_subtree(" << dir
<< ") Checking dentry " << dn
<< dendl
;
6970 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6971 if (dnl
->is_primary()) { // check for subdirectories, etc
6972 CInode
*in
= dnl
->get_inode();
6973 bool keep_inode
= false;
6975 list
<CDir
*> subdirs
;
6976 in
->get_dirfrags(subdirs
);
6977 for (list
<CDir
*>::iterator subdir
= subdirs
.begin();
6978 subdir
!= subdirs
.end();
6980 if ((*subdir
)->is_subtree_root()) {
6982 dout(10) << "trim_non_auth_subtree(" << dir
<< ") keeping " << **subdir
<< dendl
;
6984 if (trim_non_auth_subtree(*subdir
))
6987 in
->close_dirfrag((*subdir
)->get_frag());
6988 dir
->state_clear(CDir::STATE_COMPLETE
); // now incomplete!
6994 if (!keep_inode
) { // remove it!
6995 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing inode " << in
<< " with dentry" << dn
<< dendl
;
6996 dir
->unlink_inode(dn
, false);
6998 assert(!dir
->has_bloom());
6999 dir
->remove_dentry(dn
);
7001 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping inode " << in
<< " with dentry " << dn
<<dendl
;
7002 dn
->state_clear(CDentry::STATE_AUTH
);
7003 in
->state_clear(CInode::STATE_AUTH
);
7005 } else if (keep_dir
&& dnl
->is_null()) { // keep null dentry for slave rollback
7006 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping dentry " << dn
<<dendl
;
7007 } else { // just remove it
7008 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing dentry " << dn
<< dendl
;
7009 if (dnl
->is_remote())
7010 dir
->unlink_inode(dn
, false);
7011 dir
->remove_dentry(dn
);
7014 dir
->state_clear(CDir::STATE_AUTH
);
7016 * We've now checked all our children and deleted those that need it.
7017 * Now return to caller, and tell them if *we're* a keeper.
7019 return keep_dir
|| dir
->get_num_any();
7023 * during replay, when we determine a subtree is no longer ours, we
7024 * try to trim it from our cache. because subtrees must be connected
7025 * to the root, the fact that we can trim this tree may mean that our
7026 * children or parents can also be trimmed.
7028 void MDCache::try_trim_non_auth_subtree(CDir
*dir
)
7030 dout(10) << "try_trim_nonauth_subtree " << *dir
<< dendl
;
7032 // can we now trim child subtrees?
7034 get_subtree_bounds(dir
, bounds
);
7035 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
7037 if (bd
->get_dir_auth().first
!= mds
->get_nodeid() && // we are not auth
7038 bd
->get_num_any() == 0 && // and empty
7039 can_trim_non_auth_dirfrag(bd
)) {
7040 CInode
*bi
= bd
->get_inode();
7041 dout(10) << " closing empty non-auth child subtree " << *bd
<< dendl
;
7044 bi
->close_dirfrag(bd
->get_frag());
7048 if (trim_non_auth_subtree(dir
)) {
7050 try_subtree_merge(dir
);
7052 // can we trim this subtree (and possibly our ancestors) too?
7054 CInode
*diri
= dir
->get_inode();
7055 if (diri
->is_base()) {
7056 if (!diri
->is_root() && diri
->authority().first
!= mds
->get_nodeid()) {
7057 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
7058 remove_subtree(dir
);
7060 diri
->close_dirfrag(dir
->get_frag());
7062 dout(10) << " removing " << *diri
<< dendl
;
7063 assert(!diri
->get_parent_dn());
7064 assert(diri
->get_num_ref() == 0);
7070 CDir
*psub
= get_subtree_root(diri
->get_parent_dir());
7071 dout(10) << " parent subtree is " << *psub
<< dendl
;
7072 if (psub
->get_dir_auth().first
== mds
->get_nodeid())
7073 break; // we are auth, keep.
7075 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
7076 remove_subtree(dir
);
7078 diri
->close_dirfrag(dir
->get_frag());
7080 dout(10) << " parent subtree also non-auth: " << *psub
<< dendl
;
7081 if (trim_non_auth_subtree(psub
))
7090 void MDCache::standby_trim_segment(LogSegment
*ls
)
7092 ls
->new_dirfrags
.clear_list();
7093 ls
->open_files
.clear_list();
7095 while (!ls
->dirty_dirfrags
.empty()) {
7096 CDir
*dir
= ls
->dirty_dirfrags
.front();
7099 while (!ls
->dirty_inodes
.empty()) {
7100 CInode
*in
= ls
->dirty_inodes
.front();
7103 while (!ls
->dirty_dentries
.empty()) {
7104 CDentry
*dn
= ls
->dirty_dentries
.front();
7107 while (!ls
->dirty_parent_inodes
.empty()) {
7108 CInode
*in
= ls
->dirty_parent_inodes
.front();
7109 in
->clear_dirty_parent();
7111 while (!ls
->dirty_dirfrag_dir
.empty()) {
7112 CInode
*in
= ls
->dirty_dirfrag_dir
.front();
7113 in
->filelock
.remove_dirty();
7115 while (!ls
->dirty_dirfrag_nest
.empty()) {
7116 CInode
*in
= ls
->dirty_dirfrag_nest
.front();
7117 in
->nestlock
.remove_dirty();
7119 while (!ls
->dirty_dirfrag_dirfragtree
.empty()) {
7120 CInode
*in
= ls
->dirty_dirfrag_dirfragtree
.front();
7121 in
->dirfragtreelock
.remove_dirty();
7125 /* This function DOES put the passed message before returning */
7126 void MDCache::handle_cache_expire(MCacheExpire
*m
)
7128 mds_rank_t from
= mds_rank_t(m
->get_from());
7130 dout(7) << "cache_expire from mds." << from
<< dendl
;
7132 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
7137 set
<SimpleLock
*> gather_locks
;
7139 for (map
<dirfrag_t
,MCacheExpire::realm
>::iterator p
= m
->realms
.begin();
7140 p
!= m
->realms
.end();
7143 if (p
->first
.ino
> 0) {
7144 CInode
*expired_inode
= get_inode(p
->first
.ino
);
7145 assert(expired_inode
); // we had better have this.
7146 CDir
*parent_dir
= expired_inode
->get_approx_dirfrag(p
->first
.frag
);
7149 int export_state
= -1;
7150 if (parent_dir
->is_auth() && parent_dir
->is_exporting()) {
7151 export_state
= migrator
->get_export_state(parent_dir
);
7152 assert(export_state
>= 0);
7155 if (!parent_dir
->is_auth() ||
7156 (export_state
!= -1 &&
7157 ((export_state
== Migrator::EXPORT_WARNING
&&
7158 migrator
->export_has_warned(parent_dir
,from
)) ||
7159 export_state
== Migrator::EXPORT_EXPORTING
||
7160 export_state
== Migrator::EXPORT_LOGGINGFINISH
||
7161 (export_state
== Migrator::EXPORT_NOTIFYING
&&
7162 !migrator
->export_has_notified(parent_dir
,from
))))) {
7165 dout(7) << "delaying nonauth|warned expires for " << *parent_dir
<< dendl
;
7166 assert(parent_dir
->is_frozen_tree_root());
7168 // make a message container
7169 if (delayed_expire
[parent_dir
].count(from
) == 0)
7170 delayed_expire
[parent_dir
][from
] = new MCacheExpire(from
);
7172 // merge these expires into it
7173 delayed_expire
[parent_dir
][from
]->add_realm(p
->first
, p
->second
);
7176 assert(export_state
<= Migrator::EXPORT_PREPPING
||
7177 (export_state
== Migrator::EXPORT_WARNING
&&
7178 !migrator
->export_has_warned(parent_dir
, from
)));
7180 dout(7) << "expires for " << *parent_dir
<< dendl
;
7182 dout(7) << "containerless expires (root, stray inodes)" << dendl
;
7186 for (map
<vinodeno_t
,uint32_t>::iterator it
= p
->second
.inodes
.begin();
7187 it
!= p
->second
.inodes
.end();
7189 CInode
*in
= get_inode(it
->first
);
7190 unsigned nonce
= it
->second
;
7193 dout(0) << " inode expire on " << it
->first
<< " from " << from
7194 << ", don't have it" << dendl
;
7197 assert(in
->is_auth());
7198 dout(20) << __func__
<< ": expiring inode " << *in
<< dendl
;
7201 if (nonce
== in
->get_replica_nonce(from
)) {
7202 // remove from our cached_by
7203 dout(7) << " inode expire on " << *in
<< " from mds." << from
7204 << " cached_by was " << in
->get_replicas() << dendl
;
7205 inode_remove_replica(in
, from
, false, gather_locks
);
7208 // this is an old nonce, ignore expire.
7209 dout(7) << " inode expire on " << *in
<< " from mds." << from
7210 << " with old nonce " << nonce
7211 << " (current " << in
->get_replica_nonce(from
) << "), dropping"
7217 for (map
<dirfrag_t
,uint32_t>::iterator it
= p
->second
.dirs
.begin();
7218 it
!= p
->second
.dirs
.end();
7220 CDir
*dir
= get_dirfrag(it
->first
);
7221 unsigned nonce
= it
->second
;
7224 CInode
*diri
= get_inode(it
->first
.ino
);
7226 if (mds
->is_rejoin() &&
7227 rejoin_ack_gather
.count(mds
->get_nodeid()) && // haven't sent rejoin ack yet
7228 !diri
->is_replica(from
)) {
7230 diri
->get_nested_dirfrags(ls
);
7231 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7232 << " while rejoining, inode isn't replicated" << dendl
;
7233 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
7235 if (dir
->is_replica(from
)) {
7236 dout(7) << " dir expire on " << *dir
<< " from mds." << from
<< dendl
;
7237 dir
->remove_replica(from
);
7242 CDir
*other
= diri
->get_approx_dirfrag(it
->first
.frag
);
7244 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7245 << " have " << *other
<< ", mismatched frags, dropping" << dendl
;
7249 dout(0) << " dir expire on " << it
->first
<< " from " << from
7250 << ", don't have it" << dendl
;
7253 dout(20) << __func__
<< ": expiring dirfrag " << *dir
<< dendl
;
7255 assert(dir
->is_auth());
7258 if (nonce
== dir
->get_replica_nonce(from
)) {
7259 // remove from our cached_by
7260 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7261 << " replicas was " << dir
->replica_map
<< dendl
;
7262 dir
->remove_replica(from
);
7265 // this is an old nonce, ignore expire.
7266 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7267 << " with old nonce " << nonce
<< " (current " << dir
->get_replica_nonce(from
)
7268 << "), dropping" << dendl
;
7273 for (map
<dirfrag_t
, map
<pair
<string
,snapid_t
>,uint32_t> >::iterator pd
= p
->second
.dentries
.begin();
7274 pd
!= p
->second
.dentries
.end();
7276 dout(10) << " dn expires in dir " << pd
->first
<< dendl
;
7277 CInode
*diri
= get_inode(pd
->first
.ino
);
7279 CDir
*dir
= diri
->get_dirfrag(pd
->first
.frag
);
7282 dout(0) << " dn expires on " << pd
->first
<< " from " << from
7283 << ", must have refragmented" << dendl
;
7285 assert(dir
->is_auth());
7288 for (map
<pair
<string
,snapid_t
>,uint32_t>::iterator p
= pd
->second
.begin();
7289 p
!= pd
->second
.end();
7291 unsigned nonce
= p
->second
;
7295 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7297 // which dirfrag for this dentry?
7298 CDir
*dir
= diri
->get_dirfrag(diri
->pick_dirfrag(p
->first
.first
));
7300 assert(dir
->is_auth());
7301 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7306 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< " in " << *dir
<< dendl
;
7308 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< dendl
;
7312 if (nonce
== dn
->get_replica_nonce(from
)) {
7313 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
<< dendl
;
7314 dentry_remove_replica(dn
, from
, gather_locks
);
7317 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
7318 << " with old nonce " << nonce
<< " (current " << dn
->get_replica_nonce(from
)
7319 << "), dropping" << dendl
;
7328 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
7329 if (!(*p
)->is_stable())
7330 mds
->locker
->eval_gather(*p
);
7334 void MDCache::process_delayed_expire(CDir
*dir
)
7336 dout(7) << "process_delayed_expire on " << *dir
<< dendl
;
7337 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7338 p
!= delayed_expire
[dir
].end();
7340 handle_cache_expire(p
->second
);
7341 delayed_expire
.erase(dir
);
7344 void MDCache::discard_delayed_expire(CDir
*dir
)
7346 dout(7) << "discard_delayed_expire on " << *dir
<< dendl
;
7347 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7348 p
!= delayed_expire
[dir
].end();
7351 delayed_expire
.erase(dir
);
7354 void MDCache::inode_remove_replica(CInode
*in
, mds_rank_t from
, bool rejoin
,
7355 set
<SimpleLock
*>& gather_locks
)
7357 in
->remove_replica(from
);
7358 in
->mds_caps_wanted
.erase(from
);
7360 // note: this code calls _eval more often than it needs to!
7362 if (in
->authlock
.remove_replica(from
)) gather_locks
.insert(&in
->authlock
);
7363 if (in
->linklock
.remove_replica(from
)) gather_locks
.insert(&in
->linklock
);
7364 if (in
->snaplock
.remove_replica(from
)) gather_locks
.insert(&in
->snaplock
);
7365 if (in
->xattrlock
.remove_replica(from
)) gather_locks
.insert(&in
->xattrlock
);
7366 if (in
->flocklock
.remove_replica(from
)) gather_locks
.insert(&in
->flocklock
);
7367 if (in
->policylock
.remove_replica(from
)) gather_locks
.insert(&in
->policylock
);
7369 // If 'rejoin' is true and the scatter lock is in LOCK_MIX_* state.
7370 // Don't remove the recovering mds from lock's gathering list because
7371 // it may hold rejoined wrlocks.
7372 if (in
->dirfragtreelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->dirfragtreelock
);
7373 if (in
->filelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->filelock
);
7374 if (in
->nestlock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->nestlock
);
7377 void MDCache::dentry_remove_replica(CDentry
*dn
, mds_rank_t from
, set
<SimpleLock
*>& gather_locks
)
7379 dn
->remove_replica(from
);
7382 if (dn
->lock
.remove_replica(from
))
7383 gather_locks
.insert(&dn
->lock
);
7385 // Replicated strays might now be elegible for purge
7386 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7387 if (dnl
->is_primary()) {
7388 maybe_eval_stray(dnl
->get_inode());
7392 void MDCache::trim_client_leases()
7394 utime_t now
= ceph_clock_now();
7396 dout(10) << "trim_client_leases" << dendl
;
7398 for (int pool
=0; pool
<client_lease_pools
; pool
++) {
7399 int before
= client_leases
[pool
].size();
7400 if (client_leases
[pool
].empty())
7403 while (!client_leases
[pool
].empty()) {
7404 ClientLease
*r
= client_leases
[pool
].front();
7405 if (r
->ttl
> now
) break;
7406 CDentry
*dn
= static_cast<CDentry
*>(r
->parent
);
7407 dout(10) << " expiring client." << r
->client
<< " lease of " << *dn
<< dendl
;
7408 dn
->remove_client_lease(r
, mds
->locker
);
7410 int after
= client_leases
[pool
].size();
7411 dout(10) << "trim_client_leases pool " << pool
<< " trimmed "
7412 << (before
-after
) << " leases, " << after
<< " left" << dendl
;
7417 void MDCache::check_memory_usage()
7419 static MemoryModel
mm(g_ceph_context
);
7420 static MemoryModel::snap last
;
7422 static MemoryModel::snap baseline
= last
;
7424 // check client caps
7425 assert(CInode::count() == inode_map
.size());
7426 float caps_per_inode
= 0.0;
7427 if (CInode::count())
7428 caps_per_inode
= (float)Capability::count() / (float)CInode::count();
7430 dout(2) << "check_memory_usage"
7431 << " total " << last
.get_total()
7432 << ", rss " << last
.get_rss()
7433 << ", heap " << last
.get_heap()
7434 << ", baseline " << baseline
.get_heap()
7435 << ", buffers " << (buffer::get_total_alloc() >> 10)
7436 << ", " << num_inodes_with_caps
<< " / " << CInode::count() << " inodes have caps"
7437 << ", " << Capability::count() << " caps, " << caps_per_inode
<< " caps per inode"
7440 mds
->mlogger
->set(l_mdm_rss
, last
.get_rss());
7441 mds
->mlogger
->set(l_mdm_heap
, last
.get_heap());
7443 if (num_inodes_with_caps
> g_conf
->mds_cache_size
) {
7444 float ratio
= (float)g_conf
->mds_cache_size
* .9 / (float)num_inodes_with_caps
;
7446 last_recall_state
= ceph_clock_now();
7447 mds
->server
->recall_client_state(ratio
);
7451 // If the cache size had exceeded its limit, but we're back in bounds
7452 // now, free any unused pool memory so that our memory usage isn't
7453 // permanently bloated.
7454 if (exceeded_size_limit
7455 && CInode::count() <=
7456 g_conf
->mds_cache_size
* g_conf
->mds_health_cache_threshold
) {
7457 // Only do this once we are back in bounds: otherwise the releases would
7458 // slow down whatever process caused us to exceed bounds to begin with
7459 if (ceph_using_tcmalloc()) {
7460 dout(2) << "check_memory_usage: releasing unused space from tcmalloc"
7462 ceph_heap_release_free_memory();
7464 exceeded_size_limit
= false;
7470 // =========================================================================================
7473 class C_MDC_ShutdownCheck
: public MDCacheContext
{
7475 explicit C_MDC_ShutdownCheck(MDCache
*m
) : MDCacheContext(m
) {}
7476 void finish(int) override
{
7477 mdcache
->shutdown_check();
7481 void MDCache::shutdown_check()
7483 dout(0) << "shutdown_check at " << ceph_clock_now() << dendl
;
7486 char old_val
[32] = { 0 };
7488 g_conf
->get_val("debug_mds", &o
, sizeof(old_val
));
7489 g_conf
->set_val("debug_mds", "10");
7490 g_conf
->apply_changes(NULL
);
7492 g_conf
->set_val("debug_mds", old_val
);
7493 g_conf
->apply_changes(NULL
);
7494 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7497 dout(0) << "lru size now " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7498 dout(0) << "log len " << mds
->mdlog
->get_num_events() << dendl
;
7501 if (mds
->objecter
->is_active()) {
7502 dout(0) << "objecter still active" << dendl
;
7503 mds
->objecter
->dump_active();
7508 void MDCache::shutdown_start()
7510 dout(2) << "shutdown_start" << dendl
;
7512 if (g_conf
->mds_shutdown_check
)
7513 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7515 // g_conf->debug_mds = 10;
7520 bool MDCache::shutdown_pass()
7522 dout(7) << "shutdown_pass" << dendl
;
7524 if (mds
->is_stopped()) {
7525 dout(7) << " already shut down" << dendl
;
7532 if (!shutdown_export_strays()) {
7533 dout(7) << "waiting for strays to migrate" << dendl
;
7537 // drop our reference to our stray dir inode
7538 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7540 strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
7541 strays
[i
]->state_clear(CInode::STATE_STRAYPINNED
);
7542 strays
[i
]->put(CInode::PIN_STRAY
);
7543 strays
[i
]->put_stickydirs();
7549 dout(5) << "lru size now " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7552 int num_auth_subtree
= 0;
7553 if (!subtrees
.empty() &&
7554 mds
->get_nodeid() != 0 &&
7555 migrator
->get_export_queue_size() == 0) {
7556 dout(7) << "looking for subtrees to export to mds0" << dendl
;
7558 for (map
<CDir
*, set
<CDir
*> >::iterator it
= subtrees
.begin();
7559 it
!= subtrees
.end();
7561 CDir
*dir
= it
->first
;
7562 if (dir
->get_inode()->is_mdsdir())
7564 if (dir
->is_auth()) {
7566 if (dir
->is_frozen() ||
7567 dir
->is_freezing() ||
7568 dir
->is_ambiguous_dir_auth() ||
7569 dir
->state_test(CDir::STATE_EXPORTING
))
7574 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7576 mds_rank_t dest
= dir
->get_inode()->authority().first
;
7577 if (dest
> 0 && !mds
->mdsmap
->is_active(dest
))
7579 dout(7) << "sending " << *dir
<< " back to mds." << dest
<< dendl
;
7580 migrator
->export_dir_nicely(dir
, dest
);
7584 if (num_auth_subtree
> 0) {
7585 dout(7) << "still have " << num_auth_subtree
<< " auth subtrees" << dendl
;
7590 // close out any sessions (and open files!) before we try to trim the log, etc.
7591 if (mds
->sessionmap
.have_unclosed_sessions()) {
7592 if (!mds
->server
->terminating_sessions
)
7593 mds
->server
->terminate_sessions();
7597 CDir
*mydir
= myin
? myin
->get_dirfrag(frag_t()) : NULL
;
7598 if (mydir
&& !mydir
->is_subtree_root())
7601 // subtrees map not empty yet?
7602 if (subtrees
.size() > (mydir
? 1 : 0)) {
7603 dout(7) << "still have " << num_subtrees() << " subtrees" << dendl
;
7605 migrator
->show_importing();
7606 migrator
->show_exporting();
7607 if (!migrator
->is_importing() && !migrator
->is_exporting())
7611 assert(!migrator
->is_exporting());
7612 assert(!migrator
->is_importing());
7615 // flush what we can from the log
7616 mds
->mdlog
->trim(0);
7617 if (mds
->mdlog
->get_num_segments() > 1) {
7618 dout(7) << "still >1 segments, waiting for log to trim" << dendl
;
7622 // (only do this once!)
7623 if (!mds
->mdlog
->is_capped()) {
7624 dout(7) << "capping the log" << dendl
;
7629 if (!mds
->mdlog
->empty()) {
7630 dout(7) << "waiting for log to flush.. " << mds
->mdlog
->get_num_events()
7631 << " in " << mds
->mdlog
->get_num_segments() << " segments" << dendl
;
7635 if (!did_shutdown_log_cap
) {
7636 // flush journal header
7637 dout(7) << "writing header for (now-empty) journal" << dendl
;
7638 assert(mds
->mdlog
->empty());
7639 mds
->mdlog
->write_head(0);
7640 // NOTE: filer active checker below will block us until this completes.
7641 did_shutdown_log_cap
= true;
7646 if (mds
->objecter
->is_active()) {
7647 dout(7) << "objecter still active" << dendl
;
7648 mds
->objecter
->dump_active();
7652 // trim what we can from the cache
7653 if (lru
.lru_get_size() > 0 || bottom_lru
.lru_get_size() > 0) {
7654 dout(7) << "there's still stuff in the cache: " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7660 // make mydir subtree go away
7662 if (mydir
->get_num_ref() > 1) { // subtree pin
7663 dout(7) << "there's still reference to mydir " << *mydir
<< dendl
;
7668 remove_subtree(mydir
);
7669 myin
->close_dirfrag(mydir
->get_frag());
7671 assert(subtrees
.empty());
7677 dout(2) << "shutdown done." << dendl
;
7681 bool MDCache::shutdown_export_strays()
7683 if (mds
->get_nodeid() == 0)
7686 dout(10) << "shutdown_export_strays" << dendl
;
7688 bool mds0_active
= mds
->mdsmap
->is_active(mds_rank_t(0));
7693 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7697 strays
[i
]->get_dirfrags(dfs
);
7700 for (std::list
<CDir
*>::iterator dfs_i
= dfs
.begin();
7701 dfs_i
!= dfs
.end(); ++dfs_i
)
7705 if (!dir
->is_complete()) {
7712 for (CDir::map_t::iterator p
= dir
->items
.begin();
7713 p
!= dir
->items
.end();
7715 CDentry
*dn
= p
->second
;
7716 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7723 if (dn
->state_test(CDentry::STATE_PURGING
)) {
7724 // Don't try to migrate anything that is actually
7725 // being purged right now
7729 if (shutdown_exported_strays
.count(dnl
->get_inode()->ino()) == 0) {
7730 shutdown_exported_strays
.insert(dnl
->get_inode()->ino());
7731 stray_manager
.migrate_stray(dn
, mds_rank_t(0)); // send to root!
7733 dout(10) << "already exporting " << *dn
<< dendl
;
7741 // ========= messaging ==============
7743 /* This function DOES put the passed message before returning */
7744 void MDCache::dispatch(Message
*m
)
7746 switch (m
->get_type()) {
7749 case MSG_MDS_RESOLVE
:
7750 handle_resolve(static_cast<MMDSResolve
*>(m
));
7752 case MSG_MDS_RESOLVEACK
:
7753 handle_resolve_ack(static_cast<MMDSResolveAck
*>(m
));
7757 case MSG_MDS_CACHEREJOIN
:
7758 handle_cache_rejoin(static_cast<MMDSCacheRejoin
*>(m
));
7761 case MSG_MDS_DISCOVER
:
7762 handle_discover(static_cast<MDiscover
*>(m
));
7764 case MSG_MDS_DISCOVERREPLY
:
7765 handle_discover_reply(static_cast<MDiscoverReply
*>(m
));
7768 case MSG_MDS_DIRUPDATE
:
7769 handle_dir_update(static_cast<MDirUpdate
*>(m
));
7772 case MSG_MDS_CACHEEXPIRE
:
7773 handle_cache_expire(static_cast<MCacheExpire
*>(m
));
7776 case MSG_MDS_DENTRYLINK
:
7777 handle_dentry_link(static_cast<MDentryLink
*>(m
));
7779 case MSG_MDS_DENTRYUNLINK
:
7780 handle_dentry_unlink(static_cast<MDentryUnlink
*>(m
));
7783 case MSG_MDS_FRAGMENTNOTIFY
:
7784 handle_fragment_notify(static_cast<MMDSFragmentNotify
*>(m
));
7787 case MSG_MDS_FINDINO
:
7788 handle_find_ino(static_cast<MMDSFindIno
*>(m
));
7790 case MSG_MDS_FINDINOREPLY
:
7791 handle_find_ino_reply(static_cast<MMDSFindInoReply
*>(m
));
7794 case MSG_MDS_OPENINO
:
7795 handle_open_ino(static_cast<MMDSOpenIno
*>(m
));
7797 case MSG_MDS_OPENINOREPLY
:
7798 handle_open_ino_reply(static_cast<MMDSOpenInoReply
*>(m
));
7802 derr
<< "cache unknown message " << m
->get_type() << dendl
;
7803 assert(0 == "cache unknown message");
7807 MDSInternalContextBase
*MDCache::_get_waiter(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
)
7810 dout(20) << "_get_waiter retryrequest" << dendl
;
7811 return new C_MDS_RetryRequest(this, mdr
);
7813 dout(20) << "_get_waiter retrymessage" << dendl
;
7814 return new C_MDS_RetryMessage(mds
, req
);
7820 int MDCache::path_traverse(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
, // who
7821 const filepath
& path
, // what
7822 vector
<CDentry
*> *pdnvec
, // result
7826 bool discover
= (onfail
== MDS_TRAVERSE_DISCOVER
);
7827 bool null_okay
= (onfail
== MDS_TRAVERSE_DISCOVERXLOCK
);
7828 bool forward
= (onfail
== MDS_TRAVERSE_FORWARD
);
7830 assert(mdr
|| req
|| fin
);
7831 assert(!forward
|| mdr
|| req
); // forward requires a request
7833 snapid_t snapid
= CEPH_NOSNAP
;
7835 mdr
->snapid
= snapid
;
7837 client_t client
= (mdr
&& mdr
->reqid
.name
.is_client()) ? mdr
->reqid
.name
.num() : -1;
7839 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse
);
7841 dout(7) << "traverse: opening base ino " << path
.get_ino() << " snap " << snapid
<< dendl
;
7842 CInode
*cur
= get_inode(path
.get_ino());
7844 if (MDS_INO_IS_MDSDIR(path
.get_ino()))
7845 open_foreign_mdsdir(path
.get_ino(), _get_waiter(mdr
, req
, fin
));
7847 //ceph_abort(); // hrm.. broken
7852 if (cur
->state_test(CInode::STATE_PURGING
))
7855 // make sure snaprealm are open...
7856 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
7857 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
7868 while (depth
< path
.depth()) {
7869 dout(12) << "traverse: path seg depth " << depth
<< " '" << path
[depth
]
7870 << "' snapid " << snapid
<< dendl
;
7872 if (!cur
->is_dir()) {
7873 dout(7) << "traverse: " << *cur
<< " not a dir " << dendl
;
7877 // walk into snapdir?
7878 if (path
[depth
].length() == 0) {
7879 dout(10) << "traverse: snapdir" << dendl
;
7882 snapid
= CEPH_SNAPDIR
;
7883 mdr
->snapid
= snapid
;
7887 // walk thru snapdir?
7888 if (snapid
== CEPH_SNAPDIR
) {
7891 SnapRealm
*realm
= cur
->find_snaprealm();
7892 snapid
= realm
->resolve_snapname(path
[depth
], cur
->ino());
7893 dout(10) << "traverse: snap " << path
[depth
] << " -> " << snapid
<< dendl
;
7896 mdr
->snapid
= snapid
;
7902 frag_t fg
= cur
->pick_dirfrag(path
[depth
]);
7903 CDir
*curdir
= cur
->get_dirfrag(fg
);
7905 if (cur
->is_auth()) {
7906 // parent dir frozen_dir?
7907 if (cur
->is_frozen()) {
7908 dout(7) << "traverse: " << *cur
<< " is frozen, waiting" << dendl
;
7909 cur
->add_waiter(CDir::WAIT_UNFREEZE
, _get_waiter(mdr
, req
, fin
));
7912 curdir
= cur
->get_or_open_dirfrag(this, fg
);
7915 dout(10) << "traverse: need dirfrag " << fg
<< ", doing discover from " << *cur
<< dendl
;
7916 discover_path(cur
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
7918 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
7924 #ifdef MDS_VERIFY_FRAGSTAT
7925 if (curdir
->is_complete())
7926 curdir
->verify_fragstat();
7931 if (curdir->is_frozen()) {
7933 // FIXME: traverse is allowed?
7934 dout(7) << "traverse: " << *curdir << " is frozen, waiting" << dendl;
7935 curdir->add_waiter(CDir::WAIT_UNFREEZE, _get_waiter(mdr, req, fin));
7936 if (onfinish) delete onfinish;
7941 // Before doing dirfrag->dn lookup, compare with DamageTable's
7942 // record of which dentries were unreadable
7943 if (mds
->damage_table
.is_dentry_damaged(curdir
, path
[depth
], snapid
)) {
7944 dout(4) << "traverse: stopped lookup at damaged dentry "
7945 << *curdir
<< "/" << path
[depth
] << " snap=" << snapid
<< dendl
;
7950 CDentry
*dn
= curdir
->lookup(path
[depth
], snapid
);
7951 CDentry::linkage_t
*dnl
= dn
? dn
->get_projected_linkage() : 0;
7953 // null and last_bit and xlocked by me?
7954 if (dnl
&& dnl
->is_null() && null_okay
) {
7955 dout(10) << "traverse: hit null dentry at tail of traverse, succeeding" << dendl
;
7957 pdnvec
->push_back(dn
);
7964 dn
->lock
.is_xlocked() &&
7965 dn
->lock
.get_xlock_by() != mdr
&&
7966 !dn
->lock
.can_read(client
) &&
7967 (dnl
->is_null() || forward
)) {
7968 dout(10) << "traverse: xlocked dentry at " << *dn
<< dendl
;
7969 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7970 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_lock
);
7971 mds
->mdlog
->flush();
7975 // can we conclude ENOENT?
7976 if (dnl
&& dnl
->is_null()) {
7977 if (dn
->lock
.can_read(client
) ||
7978 (dn
->lock
.is_xlocked() && dn
->lock
.get_xlock_by() == mdr
)) {
7979 dout(10) << "traverse: miss on null+readable dentry " << path
[depth
] << " " << *dn
<< dendl
;
7981 if (depth
== path
.depth() - 1)
7982 pdnvec
->push_back(dn
);
7984 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
7988 dout(10) << "miss on dentry " << *dn
<< ", can't read due to lock" << dendl
;
7989 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7994 if (dnl
&& !dnl
->is_null()) {
7995 CInode
*in
= dnl
->get_inode();
7997 // do we have inode?
7999 assert(dnl
->is_remote());
8001 in
= get_inode(dnl
->get_remote_ino());
8003 dout(7) << "linking in remote in " << *in
<< dendl
;
8004 dn
->link_remote(dnl
, in
);
8006 dout(7) << "remote link to " << dnl
->get_remote_ino() << ", which i don't have" << dendl
;
8007 assert(mdr
); // we shouldn't hit non-primary dentries doing a non-mdr traversal!
8008 if (mds
->damage_table
.is_remote_damaged(dnl
->get_remote_ino())) {
8009 dout(4) << "traverse: remote dentry points to damaged ino "
8013 open_remote_dentry(dn
, true, _get_waiter(mdr
, req
, fin
),
8014 (null_okay
&& depth
== path
.depth() - 1));
8015 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_remote_ino
);
8021 // make sure snaprealm are open...
8022 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
8023 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
8027 // add to trace, continue.
8030 pdnvec
->push_back(dn
);
8038 // MISS. dentry doesn't exist.
8039 dout(12) << "traverse: miss on dentry " << path
[depth
] << " in " << *curdir
<< dendl
;
8041 if (curdir
->is_auth()) {
8043 if (curdir
->is_complete() ||
8044 (snapid
== CEPH_NOSNAP
&&
8045 curdir
->has_bloom() &&
8046 !curdir
->is_in_bloom(path
[depth
]))){
8049 // instantiate a null dn?
8050 if (depth
< path
.depth()-1){
8051 dout(20) << " didn't traverse full path; not returning pdnvec" << dendl
;
8054 ceph_abort(); // should have fallen out in ->is_null() check above
8055 } else if (curdir
->is_frozen()) {
8056 dout(20) << " not adding null to frozen dir " << dendl
;
8057 } else if (snapid
< CEPH_MAXSNAP
) {
8058 dout(20) << " not adding null for snapid " << snapid
<< dendl
;
8060 // create a null dentry
8061 dn
= curdir
->add_null_dentry(path
[depth
]);
8062 dout(20) << " added null " << *dn
<< dendl
;
8065 pdnvec
->push_back(dn
);
8067 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
8072 // Check DamageTable for missing fragments before trying to fetch
8074 if (mds
->damage_table
.is_dirfrag_damaged(curdir
)) {
8075 dout(4) << "traverse: damaged dirfrag " << *curdir
8076 << ", blocking fetch" << dendl
;
8080 // directory isn't complete; reload
8081 dout(7) << "traverse: incomplete dir contents for " << *cur
<< ", fetching" << dendl
;
8083 curdir
->fetch(_get_waiter(mdr
, req
, fin
), path
[depth
]);
8084 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_dir_fetch
);
8088 // dirfrag/dentry is not mine.
8089 mds_authority_t dauth
= curdir
->authority();
8092 snapid
&& mdr
&& mdr
->client_request
&&
8093 (int)depth
< mdr
->client_request
->get_num_fwd()) {
8094 dout(7) << "traverse: snap " << snapid
<< " and depth " << depth
8095 << " < fwd " << mdr
->client_request
->get_num_fwd()
8096 << ", discovering instead of forwarding" << dendl
;
8100 if ((discover
|| null_okay
)) {
8101 dout(7) << "traverse: discover from " << path
[depth
] << " from " << *curdir
<< dendl
;
8102 discover_path(curdir
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
8104 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
8109 dout(7) << "traverse: not auth for " << path
<< " in " << *curdir
<< dendl
;
8111 if (curdir
->is_ambiguous_auth()) {
8113 dout(7) << "traverse: waiting for single auth in " << *curdir
<< dendl
;
8114 curdir
->add_waiter(CDir::WAIT_SINGLEAUTH
, _get_waiter(mdr
, req
, fin
));
8118 dout(7) << "traverse: forwarding, not auth for " << *curdir
<< dendl
;
8121 request_forward(mdr
, dauth
.first
);
8123 mds
->forward_message_mds(req
, dauth
.first
);
8125 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_forward
);
8126 assert(fin
== NULL
);
8131 ceph_abort(); // i shouldn't get here
8135 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_hit
);
8136 dout(10) << "path_traverse finish on snapid " << snapid
<< dendl
;
8138 assert(mdr
->snapid
== snapid
);
8142 CInode
*MDCache::cache_traverse(const filepath
& fp
)
8144 dout(10) << "cache_traverse " << fp
<< dendl
;
8148 in
= get_inode(fp
.get_ino());
8154 for (unsigned i
= 0; i
< fp
.depth(); i
++) {
8155 const string
& dname
= fp
[i
];
8156 frag_t fg
= in
->pick_dirfrag(dname
);
8157 dout(20) << " " << i
<< " " << dname
<< " frag " << fg
<< " from " << *in
<< dendl
;
8158 CDir
*curdir
= in
->get_dirfrag(fg
);
8161 CDentry
*dn
= curdir
->lookup(dname
, CEPH_NOSNAP
);
8164 in
= dn
->get_linkage()->get_inode();
8168 dout(10) << " got " << *in
<< dendl
;
8174 * open_remote_dir -- open up a remote dirfrag
8176 * @param diri base inode
8177 * @param approxfg approximate fragment.
8178 * @param fin completion callback
8180 void MDCache::open_remote_dirfrag(CInode
*diri
, frag_t approxfg
, MDSInternalContextBase
*fin
)
8182 dout(10) << "open_remote_dir on " << *diri
<< dendl
;
8183 assert(diri
->is_dir());
8184 assert(!diri
->is_auth());
8185 assert(diri
->get_dirfrag(approxfg
) == 0);
8187 discover_dir_frag(diri
, approxfg
, fin
);
8192 * get_dentry_inode - get or open inode
8194 * @param dn the dentry
8195 * @param mdr current request
8197 * will return inode for primary, or link up/open up remote link's inode as necessary.
8198 * If it's not available right now, puts mdr on wait list and returns null.
8200 CInode
*MDCache::get_dentry_inode(CDentry
*dn
, MDRequestRef
& mdr
, bool projected
)
8202 CDentry::linkage_t
*dnl
;
8204 dnl
= dn
->get_projected_linkage();
8206 dnl
= dn
->get_linkage();
8208 assert(!dnl
->is_null());
8210 if (dnl
->is_primary())
8213 assert(dnl
->is_remote());
8214 CInode
*in
= get_inode(dnl
->get_remote_ino());
8216 dout(7) << "get_dentry_inode linking in remote in " << *in
<< dendl
;
8217 dn
->link_remote(dnl
, in
);
8220 dout(10) << "get_dentry_inode on remote dn, opening inode for " << *dn
<< dendl
;
8221 open_remote_dentry(dn
, projected
, new C_MDS_RetryRequest(this, mdr
));
8226 struct C_MDC_OpenRemoteDentry
: public MDCacheContext
{
8229 MDSInternalContextBase
*onfinish
;
8231 C_MDC_OpenRemoteDentry(MDCache
*m
, CDentry
*d
, inodeno_t i
, MDSInternalContextBase
*f
, bool wx
) :
8232 MDCacheContext(m
), dn(d
), ino(i
), onfinish(f
), want_xlocked(wx
) {
8233 dn
->get(MDSCacheObject::PIN_PTRWAITER
);
8235 void finish(int r
) override
{
8236 mdcache
->_open_remote_dentry_finish(dn
, ino
, onfinish
, want_xlocked
, r
);
8237 dn
->put(MDSCacheObject::PIN_PTRWAITER
);
8241 void MDCache::open_remote_dentry(CDentry
*dn
, bool projected
, MDSInternalContextBase
*fin
, bool want_xlocked
)
8243 dout(10) << "open_remote_dentry " << *dn
<< dendl
;
8244 CDentry::linkage_t
*dnl
= projected
? dn
->get_projected_linkage() : dn
->get_linkage();
8245 inodeno_t ino
= dnl
->get_remote_ino();
8246 int64_t pool
= dnl
->get_remote_d_type() == DT_DIR
? mds
->mdsmap
->get_metadata_pool() : -1;
8248 new C_MDC_OpenRemoteDentry(this, dn
, ino
, fin
, want_xlocked
), true, want_xlocked
); // backtrace
8251 void MDCache::_open_remote_dentry_finish(CDentry
*dn
, inodeno_t ino
, MDSInternalContextBase
*fin
,
8252 bool want_xlocked
, int r
)
8255 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
8256 if (dnl
->is_remote() && dnl
->get_remote_ino() == ino
) {
8257 dout(0) << "open_remote_dentry_finish bad remote dentry " << *dn
<< dendl
;
8258 dn
->state_set(CDentry::STATE_BADREMOTEINO
);
8261 CDir
*dir
= dn
->get_dir();
8263 dir
->get_inode()->make_path_string(path
);
8264 path
= path
+ "/" + dn
->get_name();
8267 bool fatal
= mds
->damage_table
.notify_remote_damaged(ino
, path
);
8270 ceph_abort(); // unreachable, damaged() respawns us
8276 fin
->complete(r
< 0 ? r
: 0);
8280 void MDCache::make_trace(vector
<CDentry
*>& trace
, CInode
*in
)
8282 // empty trace if we're a base inode
8286 CInode
*parent
= in
->get_parent_inode();
8288 make_trace(trace
, parent
);
8290 CDentry
*dn
= in
->get_parent_dn();
8291 dout(15) << "make_trace adding " << *dn
<< dendl
;
8292 trace
.push_back(dn
);
8296 // -------------------------------------------------------------------------------
8297 // Open inode by inode number
8299 class C_IO_MDC_OpenInoBacktraceFetched
: public MDCacheIOContext
{
8303 C_IO_MDC_OpenInoBacktraceFetched(MDCache
*c
, inodeno_t i
) :
8304 MDCacheIOContext(c
), ino(i
) {}
8305 void finish(int r
) override
{
8306 mdcache
->_open_ino_backtrace_fetched(ino
, bl
, r
);
8310 struct C_MDC_OpenInoTraverseDir
: public MDCacheContext
{
8315 C_MDC_OpenInoTraverseDir(MDCache
*c
, inodeno_t i
, MMDSOpenIno
*m
, bool p
) :
8316 MDCacheContext(c
), ino(i
), msg(m
), parent(p
) {}
8317 void finish(int r
) override
{
8318 if (r
< 0 && !parent
)
8321 mdcache
->handle_open_ino(msg
, r
);
8324 assert(mdcache
->opening_inodes
.count(ino
));
8325 mdcache
->_open_ino_traverse_dir(ino
, mdcache
->opening_inodes
[ino
], r
);
8329 struct C_MDC_OpenInoParentOpened
: public MDCacheContext
{
8332 C_MDC_OpenInoParentOpened(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
8333 void finish(int r
) override
{
8334 mdcache
->_open_ino_parent_opened(ino
, r
);
8338 void MDCache::_open_ino_backtrace_fetched(inodeno_t ino
, bufferlist
& bl
, int err
)
8340 dout(10) << "_open_ino_backtrace_fetched ino " << ino
<< " errno " << err
<< dendl
;
8342 assert(opening_inodes
.count(ino
));
8343 open_ino_info_t
& info
= opening_inodes
[ino
];
8345 CInode
*in
= get_inode(ino
);
8347 dout(10) << " found cached " << *in
<< dendl
;
8348 open_ino_finish(ino
, info
, in
->authority().first
);
8352 inode_backtrace_t backtrace
;
8355 ::decode(backtrace
, bl
);
8356 } catch (const buffer::error
&decode_exc
) {
8357 derr
<< "corrupt backtrace on ino x0" << std::hex
<< ino
8358 << std::dec
<< ": " << decode_exc
<< dendl
;
8359 open_ino_finish(ino
, info
, -EIO
);
8362 if (backtrace
.pool
!= info
.pool
&& backtrace
.pool
!= -1) {
8363 dout(10) << " old object in pool " << info
.pool
8364 << ", retrying pool " << backtrace
.pool
<< dendl
;
8365 info
.pool
= backtrace
.pool
;
8366 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8367 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8368 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8369 new C_OnFinisher(fin
, mds
->finisher
));
8372 } else if (err
== -ENOENT
) {
8373 int64_t meta_pool
= mds
->mdsmap
->get_metadata_pool();
8374 if (info
.pool
!= meta_pool
) {
8375 dout(10) << " no object in pool " << info
.pool
8376 << ", retrying pool " << meta_pool
<< dendl
;
8377 info
.pool
= meta_pool
;
8378 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8379 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8380 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8381 new C_OnFinisher(fin
, mds
->finisher
));
8384 err
= 0; // backtrace.ancestors.empty() is checked below
8388 if (backtrace
.ancestors
.empty()) {
8389 dout(10) << " got empty backtrace " << dendl
;
8391 } else if (!info
.ancestors
.empty()) {
8392 if (info
.ancestors
[0] == backtrace
.ancestors
[0]) {
8393 dout(10) << " got same parents " << info
.ancestors
[0] << " 2 times" << dendl
;
8401 dout(0) << " failed to open ino " << ino
<< " err " << err
<< "/" << info
.last_err
<< dendl
;
8403 err
= info
.last_err
;
8404 open_ino_finish(ino
, info
, err
);
8408 dout(10) << " got backtrace " << backtrace
<< dendl
;
8409 info
.ancestors
= backtrace
.ancestors
;
8411 _open_ino_traverse_dir(ino
, info
, 0);
8414 void MDCache::_open_ino_parent_opened(inodeno_t ino
, int ret
)
8416 dout(10) << "_open_ino_parent_opened ino " << ino
<< " ret " << ret
<< dendl
;
8418 assert(opening_inodes
.count(ino
));
8419 open_ino_info_t
& info
= opening_inodes
[ino
];
8421 CInode
*in
= get_inode(ino
);
8423 dout(10) << " found cached " << *in
<< dendl
;
8424 open_ino_finish(ino
, info
, in
->authority().first
);
8428 if (ret
== mds
->get_nodeid()) {
8429 _open_ino_traverse_dir(ino
, info
, 0);
8432 mds_rank_t checked_rank
= mds_rank_t(ret
);
8433 info
.check_peers
= true;
8434 info
.auth_hint
= checked_rank
;
8435 info
.checked
.erase(checked_rank
);
8437 do_open_ino(ino
, info
, ret
);
8441 void MDCache::_open_ino_traverse_dir(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8443 dout(10) << __func__
<< ": ino " << ino
<< " ret " << ret
<< dendl
;
8445 CInode
*in
= get_inode(ino
);
8447 dout(10) << " found cached " << *in
<< dendl
;
8448 open_ino_finish(ino
, info
, in
->authority().first
);
8453 do_open_ino(ino
, info
, ret
);
8457 mds_rank_t hint
= info
.auth_hint
;
8458 ret
= open_ino_traverse_dir(ino
, NULL
, info
.ancestors
,
8459 info
.discover
, info
.want_xlocked
, &hint
);
8462 if (hint
!= mds
->get_nodeid())
8463 info
.auth_hint
= hint
;
8464 do_open_ino(ino
, info
, ret
);
8467 void MDCache::_open_ino_fetch_dir(inodeno_t ino
, MMDSOpenIno
*m
, CDir
*dir
, bool parent
)
8469 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
8470 assert(dir
->get_inode()->dirfragtree
.is_leaf(dir
->get_frag()));
8471 dir
->fetch(new C_MDC_OpenInoTraverseDir(this, ino
, m
, parent
));
8474 int MDCache::open_ino_traverse_dir(inodeno_t ino
, MMDSOpenIno
*m
,
8475 vector
<inode_backpointer_t
>& ancestors
,
8476 bool discover
, bool want_xlocked
, mds_rank_t
*hint
)
8478 dout(10) << "open_ino_traverse_dir ino " << ino
<< " " << ancestors
<< dendl
;
8480 for (unsigned i
= 0; i
< ancestors
.size(); i
++) {
8481 CInode
*diri
= get_inode(ancestors
[i
].dirino
);
8484 if (discover
&& MDS_INO_IS_MDSDIR(ancestors
[i
].dirino
)) {
8485 open_foreign_mdsdir(ancestors
[i
].dirino
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8491 if (diri
->state_test(CInode::STATE_REJOINUNDEF
)) {
8492 CDir
*dir
= diri
->get_parent_dir();
8493 while (dir
->state_test(CDir::STATE_REJOINUNDEF
) &&
8494 dir
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
))
8495 dir
= dir
->get_inode()->get_parent_dir();
8496 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8500 if (!diri
->is_dir()) {
8501 dout(10) << " " << *diri
<< " is not dir" << dendl
;
8507 string
&name
= ancestors
[i
].dname
;
8508 frag_t fg
= diri
->pick_dirfrag(name
);
8509 CDir
*dir
= diri
->get_dirfrag(fg
);
8511 if (diri
->is_auth()) {
8512 if (diri
->is_frozen()) {
8513 dout(10) << " " << *diri
<< " is frozen, waiting " << dendl
;
8514 diri
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8517 dir
= diri
->get_or_open_dirfrag(this, fg
);
8518 } else if (discover
) {
8519 open_remote_dirfrag(diri
, fg
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8524 inodeno_t next_ino
= i
> 0 ? ancestors
[i
- 1].dirino
: ino
;
8525 CDentry
*dn
= dir
->lookup(name
);
8526 CDentry::linkage_t
*dnl
= dn
? dn
->get_linkage() : NULL
;
8527 if (dir
->is_auth()) {
8528 if (dnl
&& dnl
->is_primary() &&
8529 dnl
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
)) {
8530 dout(10) << " fetching undef " << *dnl
->get_inode() << dendl
;
8531 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8535 if (!dnl
&& !dir
->is_complete() &&
8536 (!dir
->has_bloom() || dir
->is_in_bloom(name
))) {
8537 dout(10) << " fetching incomplete " << *dir
<< dendl
;
8538 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8542 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8545 } else if (discover
) {
8547 filepath
path(name
, 0);
8548 discover_path(dir
, CEPH_NOSNAP
, path
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0),
8549 (i
== 0 && want_xlocked
));
8552 if (dnl
->is_null() && !dn
->lock
.can_read(-1)) {
8553 dout(10) << " null " << *dn
<< " is not readable, waiting" << dendl
;
8554 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8557 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8563 *hint
= dir
? dir
->authority().first
: diri
->authority().first
;
8569 void MDCache::open_ino_finish(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8571 dout(10) << "open_ino_finish ino " << ino
<< " ret " << ret
<< dendl
;
8573 list
<MDSInternalContextBase
*> waiters
;
8574 waiters
.swap(info
.waiters
);
8575 opening_inodes
.erase(ino
);
8576 finish_contexts(g_ceph_context
, waiters
, ret
);
8579 void MDCache::do_open_ino(inodeno_t ino
, open_ino_info_t
& info
, int err
)
8581 if (err
< 0 && err
!= -EAGAIN
) {
8582 info
.checked
.clear();
8583 info
.checked
.insert(mds
->get_nodeid());
8584 info
.checking
= MDS_RANK_NONE
;
8585 info
.check_peers
= true;
8586 info
.fetch_backtrace
= true;
8587 if (info
.discover
) {
8588 info
.discover
= false;
8589 info
.ancestors
.clear();
8591 if (err
!= -ENOENT
&& err
!= -ENOTDIR
)
8592 info
.last_err
= err
;
8595 if (info
.check_peers
) {
8596 info
.check_peers
= false;
8597 info
.checking
= MDS_RANK_NONE
;
8598 do_open_ino_peer(ino
, info
);
8599 } else if (info
.fetch_backtrace
) {
8600 info
.check_peers
= true;
8601 info
.fetch_backtrace
= false;
8602 info
.checking
= mds
->get_nodeid();
8603 info
.checked
.clear();
8604 info
.checked
.insert(mds
->get_nodeid());
8605 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8606 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8607 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8608 new C_OnFinisher(fin
, mds
->finisher
));
8610 assert(!info
.ancestors
.empty());
8611 info
.checking
= mds
->get_nodeid();
8612 open_ino(info
.ancestors
[0].dirino
, mds
->mdsmap
->get_metadata_pool(),
8613 new C_MDC_OpenInoParentOpened(this, ino
), info
.want_replica
);
8617 void MDCache::do_open_ino_peer(inodeno_t ino
, open_ino_info_t
& info
)
8619 set
<mds_rank_t
> all
, active
;
8620 mds
->mdsmap
->get_mds_set(all
);
8621 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8622 if (mds
->get_state() == MDSMap::STATE_REJOIN
)
8623 mds
->mdsmap
->get_mds_set(active
, MDSMap::STATE_REJOIN
);
8625 dout(10) << "do_open_ino_peer " << ino
<< " active " << active
8626 << " all " << all
<< " checked " << info
.checked
<< dendl
;
8628 mds_rank_t peer
= MDS_RANK_NONE
;
8629 if (info
.auth_hint
>= 0) {
8630 if (active
.count(info
.auth_hint
)) {
8631 peer
= info
.auth_hint
;
8632 info
.auth_hint
= MDS_RANK_NONE
;
8635 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8636 if (*p
!= mds
->get_nodeid() && info
.checked
.count(*p
) == 0) {
8642 if (all
.size() > active
.size() && all
!= info
.checked
) {
8643 dout(10) << " waiting for more peers to be active" << dendl
;
8645 dout(10) << " all MDS peers have been checked " << dendl
;
8646 do_open_ino(ino
, info
, 0);
8649 info
.checking
= peer
;
8650 vector
<inode_backpointer_t
> *pa
= NULL
;
8651 // got backtrace from peer or backtrace just fetched
8652 if (info
.discover
|| !info
.fetch_backtrace
)
8653 pa
= &info
.ancestors
;
8654 mds
->send_message_mds(new MMDSOpenIno(info
.tid
, ino
, pa
), peer
);
8658 void MDCache::handle_open_ino(MMDSOpenIno
*m
, int err
)
8660 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
8661 mds
->get_want_state() != CEPH_MDS_STATE_REJOIN
) {
8666 dout(10) << "handle_open_ino " << *m
<< " err " << err
<< dendl
;
8668 inodeno_t ino
= m
->ino
;
8669 MMDSOpenInoReply
*reply
;
8670 CInode
*in
= get_inode(ino
);
8672 dout(10) << " have " << *in
<< dendl
;
8673 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, mds_rank_t(0));
8674 if (in
->is_auth()) {
8677 CDentry
*pdn
= in
->get_parent_dn();
8680 CInode
*diri
= pdn
->get_dir()->get_inode();
8681 reply
->ancestors
.push_back(inode_backpointer_t(diri
->ino(), pdn
->name
,
8682 in
->inode
.version
));
8686 reply
->hint
= in
->authority().first
;
8688 } else if (err
< 0) {
8689 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, MDS_RANK_NONE
, err
);
8691 mds_rank_t hint
= MDS_RANK_NONE
;
8692 int ret
= open_ino_traverse_dir(ino
, m
, m
->ancestors
, false, false, &hint
);
8695 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, hint
, ret
);
8697 m
->get_connection()->send_message(reply
);
8701 void MDCache::handle_open_ino_reply(MMDSOpenInoReply
*m
)
8703 dout(10) << "handle_open_ino_reply " << *m
<< dendl
;
8705 inodeno_t ino
= m
->ino
;
8706 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8707 auto it
= opening_inodes
.find(ino
);
8708 if (it
!= opening_inodes
.end() && it
->second
.checking
== from
) {
8709 open_ino_info_t
& info
= it
->second
;
8710 info
.checking
= MDS_RANK_NONE
;
8711 info
.checked
.insert(from
);
8713 CInode
*in
= get_inode(ino
);
8715 dout(10) << " found cached " << *in
<< dendl
;
8716 open_ino_finish(ino
, info
, in
->authority().first
);
8717 } else if (!m
->ancestors
.empty()) {
8718 dout(10) << " found ino " << ino
<< " on mds." << from
<< dendl
;
8719 if (!info
.want_replica
) {
8720 open_ino_finish(ino
, info
, from
);
8725 info
.ancestors
= m
->ancestors
;
8726 info
.auth_hint
= from
;
8727 info
.checking
= mds
->get_nodeid();
8728 info
.discover
= true;
8729 _open_ino_traverse_dir(ino
, info
, 0);
8730 } else if (m
->error
) {
8731 dout(10) << " error " << m
->error
<< " from mds." << from
<< dendl
;
8732 do_open_ino(ino
, info
, m
->error
);
8734 if (m
->hint
>= 0 && m
->hint
!= mds
->get_nodeid()) {
8735 info
.auth_hint
= m
->hint
;
8736 info
.checked
.erase(m
->hint
);
8738 do_open_ino_peer(ino
, info
);
8744 void MDCache::kick_open_ino_peers(mds_rank_t who
)
8746 dout(10) << "kick_open_ino_peers mds." << who
<< dendl
;
8748 for (map
<inodeno_t
, open_ino_info_t
>::iterator p
= opening_inodes
.begin();
8749 p
!= opening_inodes
.end();
8751 open_ino_info_t
& info
= p
->second
;
8752 if (info
.checking
== who
) {
8753 dout(10) << " kicking ino " << p
->first
<< " who was checking mds." << who
<< dendl
;
8754 info
.checking
= MDS_RANK_NONE
;
8755 do_open_ino_peer(p
->first
, info
);
8756 } else if (info
.checking
== MDS_RANK_NONE
) {
8757 dout(10) << " kicking ino " << p
->first
<< " who was waiting" << dendl
;
8758 do_open_ino_peer(p
->first
, info
);
8763 void MDCache::open_ino(inodeno_t ino
, int64_t pool
, MDSInternalContextBase
* fin
,
8764 bool want_replica
, bool want_xlocked
)
8766 dout(10) << "open_ino " << ino
<< " pool " << pool
<< " want_replica "
8767 << want_replica
<< dendl
;
8769 if (opening_inodes
.count(ino
)) {
8770 open_ino_info_t
& info
= opening_inodes
[ino
];
8772 info
.want_replica
= true;
8773 if (want_xlocked
&& !info
.want_xlocked
) {
8774 if (!info
.ancestors
.empty()) {
8775 CInode
*diri
= get_inode(info
.ancestors
[0].dirino
);
8777 frag_t fg
= diri
->pick_dirfrag(info
.ancestors
[0].dname
);
8778 CDir
*dir
= diri
->get_dirfrag(fg
);
8779 if (dir
&& !dir
->is_auth()) {
8780 filepath
path(info
.ancestors
[0].dname
, 0);
8781 discover_path(dir
, CEPH_NOSNAP
, path
, NULL
, true);
8785 info
.want_xlocked
= true;
8788 info
.waiters
.push_back(fin
);
8790 open_ino_info_t
& info
= opening_inodes
[ino
];
8791 info
.checked
.insert(mds
->get_nodeid());
8792 info
.want_replica
= want_replica
;
8793 info
.want_xlocked
= want_xlocked
;
8794 info
.tid
= ++open_ino_last_tid
;
8795 info
.pool
= pool
>= 0 ? pool
: default_file_layout
.pool_id
;
8796 info
.waiters
.push_back(fin
);
8797 do_open_ino(ino
, info
, 0);
8801 /* ---------------------------- */
8804 * search for a given inode on MDS peers. optionally start with the given node.
8808 - recover from mds node failure, recovery
8812 void MDCache::find_ino_peers(inodeno_t ino
, MDSInternalContextBase
*c
, mds_rank_t hint
)
8814 dout(5) << "find_ino_peers " << ino
<< " hint " << hint
<< dendl
;
8815 assert(!have_inode(ino
));
8817 ceph_tid_t tid
= ++find_ino_peer_last_tid
;
8818 find_ino_peer_info_t
& fip
= find_ino_peer
[tid
];
8823 fip
.checked
.insert(mds
->get_nodeid());
8824 _do_find_ino_peer(fip
);
8827 void MDCache::_do_find_ino_peer(find_ino_peer_info_t
& fip
)
8829 set
<mds_rank_t
> all
, active
;
8830 mds
->mdsmap
->get_mds_set(all
);
8831 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8833 dout(10) << "_do_find_ino_peer " << fip
.tid
<< " " << fip
.ino
8834 << " active " << active
<< " all " << all
8835 << " checked " << fip
.checked
8838 mds_rank_t m
= MDS_RANK_NONE
;
8839 if (fip
.hint
>= 0) {
8841 fip
.hint
= MDS_RANK_NONE
;
8843 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8844 if (*p
!= mds
->get_nodeid() &&
8845 fip
.checked
.count(*p
) == 0) {
8850 if (m
== MDS_RANK_NONE
) {
8851 if (all
.size() > active
.size()) {
8852 dout(10) << "_do_find_ino_peer waiting for more peers to be active" << dendl
;
8854 dout(10) << "_do_find_ino_peer failed on " << fip
.ino
<< dendl
;
8855 fip
.fin
->complete(-ESTALE
);
8856 find_ino_peer
.erase(fip
.tid
);
8860 mds
->send_message_mds(new MMDSFindIno(fip
.tid
, fip
.ino
), m
);
8864 void MDCache::handle_find_ino(MMDSFindIno
*m
)
8866 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
8871 dout(10) << "handle_find_ino " << *m
<< dendl
;
8872 MMDSFindInoReply
*r
= new MMDSFindInoReply(m
->tid
);
8873 CInode
*in
= get_inode(m
->ino
);
8875 in
->make_path(r
->path
);
8876 dout(10) << " have " << r
->path
<< " " << *in
<< dendl
;
8878 m
->get_connection()->send_message(r
);
8883 void MDCache::handle_find_ino_reply(MMDSFindInoReply
*m
)
8885 map
<ceph_tid_t
, find_ino_peer_info_t
>::iterator p
= find_ino_peer
.find(m
->tid
);
8886 if (p
!= find_ino_peer
.end()) {
8887 dout(10) << "handle_find_ino_reply " << *m
<< dendl
;
8888 find_ino_peer_info_t
& fip
= p
->second
;
8891 if (get_inode(fip
.ino
)) {
8892 dout(10) << "handle_find_ino_reply successfully found " << fip
.ino
<< dendl
;
8893 mds
->queue_waiter(fip
.fin
);
8894 find_ino_peer
.erase(p
);
8899 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8900 if (fip
.checking
== from
)
8901 fip
.checking
= MDS_RANK_NONE
;
8902 fip
.checked
.insert(from
);
8904 if (!m
->path
.empty()) {
8906 vector
<CDentry
*> trace
;
8907 MDRequestRef null_ref
;
8908 int r
= path_traverse(null_ref
, m
, NULL
, m
->path
, &trace
, NULL
, MDS_TRAVERSE_DISCOVER
);
8911 dout(0) << "handle_find_ino_reply failed with " << r
<< " on " << m
->path
8912 << ", retrying" << dendl
;
8913 fip
.checked
.clear();
8914 _do_find_ino_peer(fip
);
8917 _do_find_ino_peer(fip
);
8920 dout(10) << "handle_find_ino_reply tid " << m
->tid
<< " dne" << dendl
;
8925 void MDCache::kick_find_ino_peers(mds_rank_t who
)
8927 // find_ino_peers requests we should move on from
8928 for (map
<ceph_tid_t
,find_ino_peer_info_t
>::iterator p
= find_ino_peer
.begin();
8929 p
!= find_ino_peer
.end();
8931 find_ino_peer_info_t
& fip
= p
->second
;
8932 if (fip
.checking
== who
) {
8933 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was checking mds." << who
<< dendl
;
8934 fip
.checking
= MDS_RANK_NONE
;
8935 _do_find_ino_peer(fip
);
8936 } else if (fip
.checking
== MDS_RANK_NONE
) {
8937 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was waiting" << dendl
;
8938 _do_find_ino_peer(fip
);
8943 /* ---------------------------- */
8945 int MDCache::get_num_client_requests()
8948 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
8949 p
!= active_requests
.end();
8951 MDRequestRef
& mdr
= p
->second
;
8952 if (mdr
->reqid
.name
.is_client() && !mdr
->is_slave())
8958 /* This function takes over the reference to the passed Message */
8959 MDRequestRef
MDCache::request_start(MClientRequest
*req
)
8961 // did we win a forward race against a slave?
8962 if (active_requests
.count(req
->get_reqid())) {
8963 MDRequestRef
& mdr
= active_requests
[req
->get_reqid()];
8965 if (mdr
->is_slave()) {
8966 dout(10) << "request_start already had " << *mdr
<< ", waiting for finish" << dendl
;
8967 mdr
->more()->waiting_for_finish
.push_back(new C_MDS_RetryMessage(mds
, req
));
8969 dout(10) << "request_start already processing " << *mdr
<< ", dropping new msg" << dendl
;
8972 return MDRequestRef();
8975 // register new client request
8976 MDRequestImpl::Params params
;
8977 params
.reqid
= req
->get_reqid();
8978 params
.attempt
= req
->get_num_fwd();
8979 params
.client_req
= req
;
8980 params
.initiated
= req
->get_recv_stamp();
8981 params
.throttled
= req
->get_throttle_stamp();
8982 params
.all_read
= req
->get_recv_complete_stamp();
8983 params
.dispatched
= req
->get_dispatch_stamp();
8986 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
8987 active_requests
[params
.reqid
] = mdr
;
8988 mdr
->set_op_stamp(req
->get_stamp());
8989 dout(7) << "request_start " << *mdr
<< dendl
;
8993 MDRequestRef
MDCache::request_start_slave(metareqid_t ri
, __u32 attempt
, Message
*m
)
8995 int by
= m
->get_source().num();
8996 MDRequestImpl::Params params
;
8998 params
.attempt
= attempt
;
8999 params
.triggering_slave_req
= m
;
9000 params
.slave_to
= by
;
9001 params
.initiated
= m
->get_recv_stamp();
9002 params
.throttled
= m
->get_throttle_stamp();
9003 params
.all_read
= m
->get_recv_complete_stamp();
9004 params
.dispatched
= m
->get_dispatch_stamp();
9006 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
9007 assert(active_requests
.count(mdr
->reqid
) == 0);
9008 active_requests
[mdr
->reqid
] = mdr
;
9009 dout(7) << "request_start_slave " << *mdr
<< " by mds." << by
<< dendl
;
9013 MDRequestRef
MDCache::request_start_internal(int op
)
9015 MDRequestImpl::Params params
;
9016 params
.reqid
.name
= entity_name_t::MDS(mds
->get_nodeid());
9017 params
.reqid
.tid
= mds
->issue_tid();
9018 params
.initiated
= ceph_clock_now();
9019 params
.internal_op
= op
;
9021 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
9023 assert(active_requests
.count(mdr
->reqid
) == 0);
9024 active_requests
[mdr
->reqid
] = mdr
;
9025 dout(7) << "request_start_internal " << *mdr
<< " op " << op
<< dendl
;
9029 MDRequestRef
MDCache::request_get(metareqid_t rid
)
9031 ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.find(rid
);
9032 assert(p
!= active_requests
.end());
9033 dout(7) << "request_get " << rid
<< " " << *p
->second
<< dendl
;
9037 void MDCache::request_finish(MDRequestRef
& mdr
)
9039 dout(7) << "request_finish " << *mdr
<< dendl
;
9040 mdr
->mark_event("finishing request");
9043 if (mdr
->has_more() && mdr
->more()->slave_commit
) {
9044 Context
*fin
= mdr
->more()->slave_commit
;
9045 mdr
->more()->slave_commit
= 0;
9048 mdr
->aborted
= false;
9050 mdr
->more()->slave_rolling_back
= true;
9053 mdr
->committing
= true;
9055 fin
->complete(ret
); // this must re-call request_finish.
9059 request_cleanup(mdr
);
9063 void MDCache::request_forward(MDRequestRef
& mdr
, mds_rank_t who
, int port
)
9065 mdr
->mark_event("forwarding request");
9066 if (mdr
->client_request
&& mdr
->client_request
->get_source().is_client()) {
9067 dout(7) << "request_forward " << *mdr
<< " to mds." << who
<< " req "
9068 << *mdr
->client_request
<< dendl
;
9069 mds
->forward_message_mds(mdr
->client_request
, who
);
9070 mdr
->client_request
= 0;
9071 if (mds
->logger
) mds
->logger
->inc(l_mds_forward
);
9072 } else if (mdr
->internal_op
>= 0) {
9073 dout(10) << "request_forward on internal op; cancelling" << dendl
;
9074 mdr
->internal_op_finish
->complete(-EXDEV
);
9076 dout(7) << "request_forward drop " << *mdr
<< " req " << *mdr
->client_request
9077 << " was from mds" << dendl
;
9079 request_cleanup(mdr
);
9083 void MDCache::dispatch_request(MDRequestRef
& mdr
)
9085 if (mdr
->client_request
) {
9086 mds
->server
->dispatch_client_request(mdr
);
9087 } else if (mdr
->slave_request
) {
9088 mds
->server
->dispatch_slave_request(mdr
);
9090 switch (mdr
->internal_op
) {
9091 case CEPH_MDS_OP_FRAGMENTDIR
:
9092 dispatch_fragment_dir(mdr
);
9094 case CEPH_MDS_OP_EXPORTDIR
:
9095 migrator
->dispatch_export_dir(mdr
, 0);
9097 case CEPH_MDS_OP_ENQUEUE_SCRUB
:
9098 enqueue_scrub_work(mdr
);
9100 case CEPH_MDS_OP_FLUSH
:
9101 flush_dentry_work(mdr
);
9103 case CEPH_MDS_OP_REPAIR_FRAGSTATS
:
9104 repair_dirfrag_stats_work(mdr
);
9106 case CEPH_MDS_OP_REPAIR_INODESTATS
:
9107 repair_inode_stats_work(mdr
);
9116 void MDCache::request_drop_foreign_locks(MDRequestRef
& mdr
)
9118 if (!mdr
->has_more())
9122 // (will implicitly drop remote dn pins)
9123 for (set
<mds_rank_t
>::iterator p
= mdr
->more()->slaves
.begin();
9124 p
!= mdr
->more()->slaves
.end();
9126 MMDSSlaveRequest
*r
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
9127 MMDSSlaveRequest::OP_FINISH
);
9129 if (mdr
->killed
&& !mdr
->committing
) {
9131 } else if (mdr
->more()->srcdn_auth_mds
== *p
&&
9132 mdr
->more()->inode_import
.length() > 0) {
9133 // information about rename imported caps
9134 r
->inode_export
.claim(mdr
->more()->inode_import
);
9137 mds
->send_message_mds(r
, *p
);
9140 /* strip foreign xlocks out of lock lists, since the OP_FINISH drops them
9141 * implicitly. Note that we don't call the finishers -- there shouldn't
9142 * be any on a remote lock and the request finish wakes up all
9143 * the waiters anyway! */
9144 set
<SimpleLock
*>::iterator p
= mdr
->xlocks
.begin();
9145 while (p
!= mdr
->xlocks
.end()) {
9146 if ((*p
)->get_parent()->is_auth())
9149 dout(10) << "request_drop_foreign_locks forgetting lock " << **p
9150 << " on " << *(*p
)->get_parent() << dendl
;
9152 mdr
->locks
.erase(*p
);
9153 mdr
->xlocks
.erase(p
++);
9157 map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
9158 while (q
!= mdr
->remote_wrlocks
.end()) {
9159 dout(10) << "request_drop_foreign_locks forgetting remote_wrlock " << *q
->first
9160 << " on mds." << q
->second
9161 << " on " << *(q
->first
)->get_parent() << dendl
;
9162 mdr
->locks
.erase(q
->first
);
9163 mdr
->remote_wrlocks
.erase(q
++);
9166 mdr
->more()->slaves
.clear(); /* we no longer have requests out to them, and
9167 * leaving them in can cause double-notifies as
9168 * this function can get called more than once */
9171 void MDCache::request_drop_non_rdlocks(MDRequestRef
& mdr
)
9173 request_drop_foreign_locks(mdr
);
9174 mds
->locker
->drop_non_rdlocks(mdr
.get());
9177 void MDCache::request_drop_locks(MDRequestRef
& mdr
)
9179 request_drop_foreign_locks(mdr
);
9180 mds
->locker
->drop_locks(mdr
.get());
9183 void MDCache::request_cleanup(MDRequestRef
& mdr
)
9185 dout(15) << "request_cleanup " << *mdr
<< dendl
;
9187 if (mdr
->has_more()) {
9188 if (mdr
->more()->is_ambiguous_auth
)
9189 mdr
->clear_ambiguous_auth();
9190 if (!mdr
->more()->waiting_for_finish
.empty())
9191 mds
->queue_waiters(mdr
->more()->waiting_for_finish
);
9194 request_drop_locks(mdr
);
9196 // drop (local) auth pins
9197 mdr
->drop_local_auth_pins();
9200 for (set
<CInode
*>::iterator p
= mdr
->stickydirs
.begin();
9201 p
!= mdr
->stickydirs
.end();
9203 (*p
)->put_stickydirs();
9205 mds
->locker
->kick_cap_releases(mdr
);
9210 // remove from session
9211 mdr
->item_session_request
.remove_myself();
9214 active_requests
.erase(mdr
->reqid
);
9219 mdr
->mark_event("cleaned up request");
9222 void MDCache::request_kill(MDRequestRef
& mdr
)
9224 // rollback slave requests is tricky. just let the request proceed.
9225 if (mdr
->done_locking
&& mdr
->has_more() &&
9226 (!mdr
->more()->witnessed
.empty() || !mdr
->more()->waiting_on_slave
.empty())) {
9227 dout(10) << "request_kill " << *mdr
<< " -- already started slave requests, no-op" << dendl
;
9229 assert(mdr
->used_prealloc_ino
== 0);
9230 assert(mdr
->prealloc_inos
.empty());
9232 mdr
->session
= NULL
;
9233 mdr
->item_session_request
.remove_myself();
9238 mdr
->mark_event("killing request");
9240 if (mdr
->committing
) {
9241 dout(10) << "request_kill " << *mdr
<< " -- already committing, no-op" << dendl
;
9243 dout(10) << "request_kill " << *mdr
<< dendl
;
9244 request_cleanup(mdr
);
9248 // -------------------------------------------------------------------------------
9251 struct C_MDC_snaprealm_create_finish
: public MDCacheLogContext
{
9255 C_MDC_snaprealm_create_finish(MDCache
*c
, MDRequestRef
& m
,
9256 MutationRef
& mu
, CInode
*i
) :
9257 MDCacheLogContext(c
), mdr(m
), mut(mu
), in(i
) {}
9258 void finish(int r
) override
{
9259 mdcache
->_snaprealm_create_finish(mdr
, mut
, in
);
9263 void MDCache::snaprealm_create(MDRequestRef
& mdr
, CInode
*in
)
9265 dout(10) << "snaprealm_create " << *in
<< dendl
;
9266 assert(!in
->snaprealm
);
9269 if (!mdr
->more()->stid
) {
9270 mds
->snapclient
->prepare_create_realm(in
->ino(), &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
9271 new C_MDS_RetryRequest(this, mdr
));
9275 MutationRef
mut(new MutationImpl());
9276 mut
->ls
= mds
->mdlog
->get_current_segment();
9277 EUpdate
*le
= new EUpdate(mds
->mdlog
, "snaprealm_create");
9278 mds
->mdlog
->start_entry(le
);
9280 le
->metablob
.add_table_transaction(TABLE_SNAP
, mdr
->more()->stid
);
9282 inode_t
*pi
= in
->project_inode();
9283 pi
->version
= in
->pre_dirty();
9284 pi
->rstat
.rsnaprealms
++;
9286 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9290 sr_t
*newsnap
= in
->project_snaprealm(seq
);
9292 newsnap
->last_created
= seq
;
9294 predirty_journal_parents(mut
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
9295 journal_cow_inode(mut
, &le
->metablob
, in
);
9296 le
->metablob
.add_primary_dentry(in
->get_projected_parent_dn(), in
, true);
9298 mds
->server
->submit_mdlog_entry(le
,
9299 new C_MDC_snaprealm_create_finish(this, mdr
,
9302 mds
->mdlog
->flush();
9306 void MDCache::do_realm_invalidate_and_update_notify(CInode
*in
, int snapop
, bool nosend
)
9308 dout(10) << "do_realm_invalidate_and_update_notify " << *in
->snaprealm
<< " " << *in
<< dendl
;
9310 vector
<inodeno_t
> split_inos
;
9311 vector
<inodeno_t
> split_realms
;
9313 if (snapop
== CEPH_SNAP_OP_SPLIT
) {
9314 // notify clients of update|split
9315 for (elist
<CInode
*>::iterator p
= in
->snaprealm
->inodes_with_caps
.begin(member_offset(CInode
, item_caps
));
9317 split_inos
.push_back((*p
)->ino());
9319 for (set
<SnapRealm
*>::iterator p
= in
->snaprealm
->open_children
.begin();
9320 p
!= in
->snaprealm
->open_children
.end();
9322 split_realms
.push_back((*p
)->inode
->ino());
9326 in
->snaprealm
->build_snap_trace(snapbl
);
9328 set
<SnapRealm
*> past_children
;
9329 map
<client_t
, MClientSnap
*> updates
;
9331 q
.push_back(in
->snaprealm
);
9332 while (!q
.empty()) {
9333 SnapRealm
*realm
= q
.front();
9336 dout(10) << " realm " << *realm
<< " on " << *realm
->inode
<< dendl
;
9337 realm
->invalidate_cached_snaps();
9339 for (map
<client_t
, xlist
<Capability
*>* >::iterator p
= realm
->client_caps
.begin();
9340 p
!= realm
->client_caps
.end();
9342 assert(!p
->second
->empty());
9343 if (!nosend
&& updates
.count(p
->first
) == 0) {
9344 MClientSnap
*update
= new MClientSnap(snapop
);
9345 update
->head
.split
= in
->ino();
9346 update
->split_inos
= split_inos
;
9347 update
->split_realms
= split_realms
;
9348 update
->bl
= snapbl
;
9349 updates
[p
->first
] = update
;
9353 if (snapop
== CEPH_SNAP_OP_UPDATE
|| snapop
== CEPH_SNAP_OP_DESTROY
) {
9354 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9355 p
!= realm
->open_past_children
.end();
9357 past_children
.insert(*p
);
9360 // notify for active children, too.
9361 dout(10) << " " << realm
<< " open_children are " << realm
->open_children
<< dendl
;
9362 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9363 p
!= realm
->open_children
.end();
9369 send_snaps(updates
);
9371 // notify past children and their descendants if we update/delete old snapshots
9372 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9373 p
!= past_children
.end();
9377 while (!q
.empty()) {
9378 SnapRealm
*realm
= q
.front();
9381 realm
->invalidate_cached_snaps();
9383 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9384 p
!= realm
->open_children
.end();
9386 if (past_children
.count(*p
) == 0)
9390 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9391 p
!= realm
->open_past_children
.end();
9393 if (past_children
.count(*p
) == 0) {
9395 past_children
.insert(*p
);
9400 if (snapop
== CEPH_SNAP_OP_DESTROY
) {
9401 // eval stray inodes if we delete snapshot from their past ancestor snaprealm
9402 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9403 p
!= past_children
.end();
9405 maybe_eval_stray((*p
)->inode
, true);
9409 void MDCache::_snaprealm_create_finish(MDRequestRef
& mdr
, MutationRef
& mut
, CInode
*in
)
9411 dout(10) << "_snaprealm_create_finish " << *in
<< dendl
;
9414 in
->pop_and_dirty_projected_inode(mut
->ls
);
9416 mds
->locker
->drop_locks(mut
.get());
9419 // tell table we've committed
9420 mds
->snapclient
->commit(mdr
->more()->stid
, mut
->ls
);
9423 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9427 in
->open_snaprealm();
9428 in
->snaprealm
->srnode
.seq
= seq
;
9429 in
->snaprealm
->srnode
.created
= seq
;
9430 bool ok
= in
->snaprealm
->_open_parents(NULL
);
9433 do_realm_invalidate_and_update_notify(in
, CEPH_SNAP_OP_SPLIT
);
9436 static int count = 5;
9438 ceph_abort(); // hack test test **********
9442 mdr
->more()->stid
= 0; // caller will likely need to reuse this
9443 dispatch_request(mdr
);
9447 // -------------------------------------------------------------------------------
9450 struct C_MDC_RetryScanStray
: public MDCacheContext
{
9452 C_MDC_RetryScanStray(MDCache
*c
, dirfrag_t n
) : MDCacheContext(c
), next(n
) { }
9453 void finish(int r
) override
{
9454 mdcache
->scan_stray_dir(next
);
9458 void MDCache::scan_stray_dir(dirfrag_t next
)
9460 dout(10) << "scan_stray_dir " << next
<< dendl
;
9463 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
9464 if (strays
[i
]->ino() < next
.ino
)
9466 strays
[i
]->get_dirfrags(ls
);
9469 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
9471 if (dir
->dirfrag() < next
)
9473 if (!dir
->is_complete()) {
9474 dir
->fetch(new C_MDC_RetryScanStray(this, dir
->dirfrag()));
9477 for (CDir::map_t::iterator q
= dir
->items
.begin(); q
!= dir
->items
.end(); ++q
) {
9478 CDentry
*dn
= q
->second
;
9479 dn
->state_set(CDentry::STATE_STRAY
);
9480 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
9481 if (dnl
->is_primary()) {
9482 CInode
*in
= dnl
->get_inode();
9483 if (in
->inode
.nlink
== 0)
9484 in
->state_set(CInode::STATE_ORPHAN
);
9485 maybe_eval_stray(in
);
9491 void MDCache::fetch_backtrace(inodeno_t ino
, int64_t pool
, bufferlist
& bl
, Context
*fin
)
9493 object_t oid
= CInode::get_object_name(ino
, frag_t(), "");
9494 mds
->objecter
->getxattr(oid
, object_locator_t(pool
), "parent", CEPH_NOSNAP
, &bl
, 0, fin
);
9501 // ========================================================================================
9505 - for all discovers (except base_inos, e.g. root, stray), waiters are attached
9506 to the parent metadata object in the cache (pinning it).
9508 - all discovers are tracked by tid, so that we can ignore potentially dup replies.
9512 void MDCache::_send_discover(discover_info_t
& d
)
9514 MDiscover
*dis
= new MDiscover(d
.ino
, d
.frag
, d
.snap
, d
.want_path
,
9515 d
.want_base_dir
, d
.want_xlocked
);
9516 dis
->set_tid(d
.tid
);
9517 mds
->send_message_mds(dis
, d
.mds
);
9520 void MDCache::discover_base_ino(inodeno_t want_ino
,
9521 MDSInternalContextBase
*onfinish
,
9524 dout(7) << "discover_base_ino " << want_ino
<< " from mds." << from
<< dendl
;
9525 if (waiting_for_base_ino
[from
].count(want_ino
) == 0) {
9526 discover_info_t
& d
= _create_discover(from
);
9530 waiting_for_base_ino
[from
][want_ino
].push_back(onfinish
);
9534 void MDCache::discover_dir_frag(CInode
*base
,
9536 MDSInternalContextBase
*onfinish
,
9540 from
= base
->authority().first
;
9542 dirfrag_t
df(base
->ino(), approx_fg
);
9543 dout(7) << "discover_dir_frag " << df
9544 << " from mds." << from
<< dendl
;
9546 if (!base
->is_waiting_for_dir(approx_fg
) || !onfinish
) {
9547 discover_info_t
& d
= _create_discover(from
);
9549 d
.ino
= base
->ino();
9551 d
.want_base_dir
= true;
9556 base
->add_dir_waiter(approx_fg
, onfinish
);
9559 struct C_MDC_RetryDiscoverPath
: public MDCacheContext
{
9564 C_MDC_RetryDiscoverPath(MDCache
*c
, CInode
*b
, snapid_t s
, filepath
&p
, mds_rank_t f
) :
9565 MDCacheContext(c
), base(b
), snapid(s
), path(p
), from(f
) {}
9566 void finish(int r
) override
{
9567 mdcache
->discover_path(base
, snapid
, path
, 0, from
);
9571 void MDCache::discover_path(CInode
*base
,
9574 MDSInternalContextBase
*onfinish
,
9579 from
= base
->authority().first
;
9581 dout(7) << "discover_path " << base
->ino() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9582 << (want_xlocked
? " want_xlocked":"")
9585 if (base
->is_ambiguous_auth()) {
9586 dout(10) << " waiting for single auth on " << *base
<< dendl
;
9588 onfinish
= new C_MDC_RetryDiscoverPath(this, base
, snap
, want_path
, from
);
9589 base
->add_waiter(CInode::WAIT_SINGLEAUTH
, onfinish
);
9591 } else if (from
== mds
->get_nodeid()) {
9592 list
<MDSInternalContextBase
*> finished
;
9593 base
->take_waiting(CInode::WAIT_DIR
, finished
);
9594 mds
->queue_waiters(finished
);
9598 frag_t fg
= base
->pick_dirfrag(want_path
[0]);
9599 if ((want_xlocked
&& want_path
.depth() == 1) ||
9600 !base
->is_waiting_for_dir(fg
) || !onfinish
) {
9601 discover_info_t
& d
= _create_discover(from
);
9602 d
.ino
= base
->ino();
9606 d
.want_path
= want_path
;
9607 d
.want_base_dir
= true;
9608 d
.want_xlocked
= want_xlocked
;
9614 base
->add_dir_waiter(fg
, onfinish
);
9617 struct C_MDC_RetryDiscoverPath2
: public MDCacheContext
{
9621 C_MDC_RetryDiscoverPath2(MDCache
*c
, CDir
*b
, snapid_t s
, filepath
&p
) :
9622 MDCacheContext(c
), base(b
), snapid(s
), path(p
) {}
9623 void finish(int r
) override
{
9624 mdcache
->discover_path(base
, snapid
, path
, 0);
9628 void MDCache::discover_path(CDir
*base
,
9631 MDSInternalContextBase
*onfinish
,
9634 mds_rank_t from
= base
->authority().first
;
9636 dout(7) << "discover_path " << base
->dirfrag() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9637 << (want_xlocked
? " want_xlocked":"")
9640 if (base
->is_ambiguous_auth()) {
9641 dout(7) << " waiting for single auth on " << *base
<< dendl
;
9643 onfinish
= new C_MDC_RetryDiscoverPath2(this, base
, snap
, want_path
);
9644 base
->add_waiter(CDir::WAIT_SINGLEAUTH
, onfinish
);
9646 } else if (from
== mds
->get_nodeid()) {
9647 list
<MDSInternalContextBase
*> finished
;
9648 base
->take_sub_waiting(finished
);
9649 mds
->queue_waiters(finished
);
9653 if ((want_xlocked
&& want_path
.depth() == 1) ||
9654 !base
->is_waiting_for_dentry(want_path
[0].c_str(), snap
) || !onfinish
) {
9655 discover_info_t
& d
= _create_discover(from
);
9656 d
.ino
= base
->ino();
9657 d
.pin_base(base
->inode
);
9658 d
.frag
= base
->get_frag();
9660 d
.want_path
= want_path
;
9661 d
.want_base_dir
= false;
9662 d
.want_xlocked
= want_xlocked
;
9668 base
->add_dentry_waiter(want_path
[0], snap
, onfinish
);
9671 void MDCache::kick_discovers(mds_rank_t who
)
9673 for (map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.begin();
9674 p
!= discovers
.end();
9676 if (p
->second
.mds
!= who
)
9678 _send_discover(p
->second
);
9683 /* This function DOES put the passed message before returning */
9684 void MDCache::handle_discover(MDiscover
*dis
)
9686 mds_rank_t whoami
= mds
->get_nodeid();
9687 mds_rank_t from
= mds_rank_t(dis
->get_source().num());
9689 assert(from
!= whoami
);
9691 if (mds
->get_state() <= MDSMap::STATE_REJOIN
) {
9692 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
9693 mds
->get_want_state() != CEPH_MDS_STATE_REJOIN
) {
9698 // proceed if requester is in the REJOIN stage, the request is from parallel_fetch().
9699 // delay processing request from survivor because we may not yet choose lock states.
9700 if (!mds
->mdsmap
->is_rejoin(from
)) {
9701 dout(0) << "discover_reply not yet active(|still rejoining), delaying" << dendl
;
9702 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, dis
));
9709 MDiscoverReply
*reply
= new MDiscoverReply(dis
);
9711 snapid_t snapid
= dis
->get_snapid();
9714 if (MDS_INO_IS_BASE(dis
->get_base_ino()) &&
9715 !dis
->wants_base_dir() && dis
->get_want().depth() == 0) {
9717 dout(7) << "handle_discover from mds." << from
9718 << " wants base + " << dis
->get_want().get_path()
9719 << " snap " << snapid
9722 cur
= get_inode(dis
->get_base_ino());
9726 reply
->starts_with
= MDiscoverReply::INODE
;
9727 replicate_inode(cur
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9728 dout(10) << "added base " << *cur
<< dendl
;
9731 // there's a base inode
9732 cur
= get_inode(dis
->get_base_ino(), snapid
);
9733 if (!cur
&& snapid
!= CEPH_NOSNAP
) {
9734 cur
= get_inode(dis
->get_base_ino());
9735 if (cur
&& !cur
->is_multiversion())
9736 cur
= NULL
; // nope!
9740 dout(7) << "handle_discover mds." << from
9741 << " don't have base ino " << dis
->get_base_ino() << "." << snapid
9743 if (!dis
->wants_base_dir() && dis
->get_want().depth() > 0)
9744 reply
->set_error_dentry(dis
->get_dentry(0));
9745 reply
->set_flag_error_dir();
9746 } else if (dis
->wants_base_dir()) {
9747 dout(7) << "handle_discover mds." << from
9748 << " wants basedir+" << dis
->get_want().get_path()
9752 dout(7) << "handle_discover mds." << from
9753 << " wants " << dis
->get_want().get_path()
9762 // do some fidgeting to include a dir if they asked for the base dir, or just root.
9763 for (unsigned i
= 0;
9764 cur
&& (i
< dis
->get_want().depth() || dis
->get_want().depth() == 0);
9767 // -- figure out the dir
9769 // is *cur even a dir at all?
9770 if (!cur
->is_dir()) {
9771 dout(7) << *cur
<< " not a dir" << dendl
;
9772 reply
->set_flag_error_dir();
9778 if (dis
->get_want().depth()) {
9780 fg
= cur
->pick_dirfrag(dis
->get_dentry(i
));
9782 // requester explicity specified the frag
9783 assert(dis
->wants_base_dir() || MDS_INO_IS_BASE(dis
->get_base_ino()));
9784 fg
= dis
->get_base_dir_frag();
9785 if (!cur
->dirfragtree
.is_leaf(fg
))
9786 fg
= cur
->dirfragtree
[fg
.value()];
9788 CDir
*curdir
= cur
->get_dirfrag(fg
);
9790 if ((!curdir
&& !cur
->is_auth()) ||
9791 (curdir
&& !curdir
->is_auth())) {
9794 * ONLY set flag if empty!!
9795 * otherwise requester will wake up waiter(s) _and_ continue with discover,
9796 * resulting in duplicate discovers in flight,
9797 * which can wreak havoc when discovering rename srcdn (which may move)
9800 if (reply
->is_empty()) {
9801 // only hint if empty.
9802 // someday this could be better, but right now the waiter logic isn't smart enough.
9806 dout(7) << " not dirfrag auth, setting dir_auth_hint for " << *curdir
<< dendl
;
9807 reply
->set_dir_auth_hint(curdir
->authority().first
);
9809 dout(7) << " dirfrag not open, not inode auth, setting dir_auth_hint for "
9811 reply
->set_dir_auth_hint(cur
->authority().first
);
9814 // note error dentry, if any
9815 // NOTE: important, as it allows requester to issue an equivalent discover
9816 // to whomever we hint at.
9817 if (dis
->get_want().depth() > i
)
9818 reply
->set_error_dentry(dis
->get_dentry(i
));
9824 if (!curdir
) { // open dir?
9825 if (cur
->is_frozen()) {
9826 if (!reply
->is_empty()) {
9827 dout(7) << *cur
<< " is frozen, non-empty reply, stopping" << dendl
;
9830 dout(7) << *cur
<< " is frozen, empty reply, waiting" << dendl
;
9831 cur
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9835 curdir
= cur
->get_or_open_dirfrag(this, fg
);
9836 } else if (curdir
->is_frozen_tree() ||
9837 (curdir
->is_frozen_dir() && fragment_are_all_frozen(curdir
))) {
9838 if (!reply
->is_empty()) {
9839 dout(7) << *curdir
<< " is frozen, non-empty reply, stopping" << dendl
;
9842 if (dis
->wants_base_dir() && dis
->get_base_dir_frag() != curdir
->get_frag()) {
9843 dout(7) << *curdir
<< " is frozen, dirfrag mismatch, stopping" << dendl
;
9844 reply
->set_flag_error_dir();
9847 dout(7) << *curdir
<< " is frozen, empty reply, waiting" << dendl
;
9848 curdir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9854 if (curdir
->get_version() == 0) {
9855 // fetch newly opened dir
9856 } else if (reply
->is_empty() && !dis
->wants_base_dir()) {
9857 dout(7) << "handle_discover not adding unwanted base dir " << *curdir
<< dendl
;
9858 // make sure the base frag is correct, though, in there was a refragment since the
9859 // original request was sent.
9860 reply
->set_base_dir_frag(curdir
->get_frag());
9862 assert(!curdir
->is_ambiguous_auth()); // would be frozen.
9863 if (!reply
->trace
.length())
9864 reply
->starts_with
= MDiscoverReply::DIR;
9865 replicate_dir(curdir
, from
, reply
->trace
);
9866 dout(7) << "handle_discover added dir " << *curdir
<< dendl
;
9871 if (curdir
->get_version() == 0) {
9872 // fetch newly opened dir
9873 assert(!curdir
->has_bloom());
9874 } else if (dis
->get_want().depth() > 0) {
9876 dn
= curdir
->lookup(dis
->get_dentry(i
), snapid
);
9882 if (!curdir
->is_complete() &&
9883 (!curdir
->has_bloom() || curdir
->is_in_bloom(dis
->get_dentry(i
)))) {
9885 dout(7) << "incomplete dir contents for " << *curdir
<< ", fetching" << dendl
;
9886 if (reply
->is_empty()) {
9888 curdir
->fetch(new C_MDS_RetryMessage(mds
, dis
),
9889 dis
->wants_base_dir() && curdir
->get_version() == 0);
9893 // initiate fetch, but send what we have so far
9900 dout(7) << "dentry " << dis
->get_dentry(i
) << " dne, returning null in "
9901 << *curdir
<< dendl
;
9902 dn
= curdir
->add_null_dentry(dis
->get_dentry(i
));
9906 // don't add replica to purging dentry/inode
9907 if (dn
->state_test(CDentry::STATE_PURGING
)) {
9908 if (reply
->is_empty())
9909 reply
->set_flag_error_dn(dis
->get_dentry(i
));
9913 CDentry::linkage_t
*dnl
= dn
->get_linkage();
9916 // ...always block on non-tail items (they are unrelated)
9917 // ...allow xlocked tail disocvery _only_ if explicitly requested
9918 bool tailitem
= (dis
->get_want().depth() == 0) || (i
== dis
->get_want().depth() - 1);
9919 if (dn
->lock
.is_xlocked()) {
9920 // is this the last (tail) item in the discover traversal?
9921 if (tailitem
&& dis
->wants_xlocked()) {
9922 dout(7) << "handle_discover allowing discovery of xlocked tail " << *dn
<< dendl
;
9923 } else if (reply
->is_empty()) {
9924 dout(7) << "handle_discover blocking on xlocked " << *dn
<< dendl
;
9925 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDS_RetryMessage(mds
, dis
));
9929 dout(7) << "handle_discover non-empty reply, xlocked tail " << *dn
<< dendl
;
9935 if (dnl
->is_primary() && dnl
->get_inode()->is_frozen_inode()) {
9936 if (tailitem
&& dis
->wants_xlocked()) {
9937 dout(7) << "handle_discover allowing discovery of frozen tail " << *dnl
->get_inode() << dendl
;
9938 } else if (reply
->is_empty()) {
9939 dout(7) << *dnl
->get_inode() << " is frozen, empty reply, waiting" << dendl
;
9940 dnl
->get_inode()->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9944 dout(7) << *dnl
->get_inode() << " is frozen, non-empty reply, stopping" << dendl
;
9950 if (!reply
->trace
.length())
9951 reply
->starts_with
= MDiscoverReply::DENTRY
;
9952 replicate_dentry(dn
, from
, reply
->trace
);
9953 dout(7) << "handle_discover added dentry " << *dn
<< dendl
;
9955 if (!dnl
->is_primary()) break; // stop on null or remote link.
9958 CInode
*next
= dnl
->get_inode();
9959 assert(next
->is_auth());
9961 replicate_inode(next
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9962 dout(7) << "handle_discover added inode " << *next
<< dendl
;
9964 // descend, keep going.
9970 assert(!reply
->is_empty());
9971 dout(7) << "handle_discover sending result back to asker mds." << from
<< dendl
;
9972 mds
->send_message(reply
, dis
->get_connection());
9977 /* This function DOES put the passed message before returning */
9978 void MDCache::handle_discover_reply(MDiscoverReply
*m
)
9981 if (mds->get_state() < MDSMap::STATE_ACTIVE) {
9982 dout(0) << "discover_reply NOT ACTIVE YET" << dendl;
9987 dout(7) << "discover_reply " << *m
<< dendl
;
9988 if (m
->is_flag_error_dir())
9989 dout(7) << " flag error, dir" << dendl
;
9990 if (m
->is_flag_error_dn())
9991 dout(7) << " flag error, dentry = " << m
->get_error_dentry() << dendl
;
9993 list
<MDSInternalContextBase
*> finished
, error
;
9994 mds_rank_t from
= mds_rank_t(m
->get_source().num());
9997 CInode
*cur
= get_inode(m
->get_base_ino());
9998 bufferlist::iterator p
= m
->trace
.begin();
10000 int next
= m
->starts_with
;
10002 // decrement discover counters
10003 if (m
->get_tid()) {
10004 map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.find(m
->get_tid());
10005 if (p
!= discovers
.end()) {
10006 dout(10) << " found tid " << m
->get_tid() << dendl
;
10007 discovers
.erase(p
);
10009 dout(10) << " tid " << m
->get_tid() << " not found, must be dup reply" << dendl
;
10013 // discover may start with an inode
10014 if (!p
.end() && next
== MDiscoverReply::INODE
) {
10015 cur
= add_replica_inode(p
, NULL
, finished
);
10016 dout(7) << "discover_reply got base inode " << *cur
<< dendl
;
10017 assert(cur
->is_base());
10019 next
= MDiscoverReply::DIR;
10022 if (cur
->is_base() &&
10023 waiting_for_base_ino
[from
].count(cur
->ino())) {
10024 finished
.swap(waiting_for_base_ino
[from
][cur
->ino()]);
10025 waiting_for_base_ino
[from
].erase(cur
->ino());
10030 // loop over discover results.
10031 // indexes follow each ([[dir] dentry] inode)
10032 // can start, end with any type.
10037 if (next
== MDiscoverReply::DIR) {
10038 curdir
= add_replica_dir(p
, cur
, mds_rank_t(m
->get_source().num()), finished
);
10039 if (cur
->ino() == m
->get_base_ino() && curdir
->get_frag() != m
->get_base_dir_frag()) {
10040 assert(m
->get_wanted_base_dir());
10041 cur
->take_dir_waiting(m
->get_base_dir_frag(), finished
);
10044 // note: this can only happen our first way around this loop.
10045 if (p
.end() && m
->is_flag_error_dn()) {
10046 fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10047 curdir
= cur
->get_dirfrag(fg
);
10049 curdir
= cur
->get_dirfrag(m
->get_base_dir_frag());
10056 CDentry
*dn
= add_replica_dentry(p
, curdir
, finished
);
10062 cur
= add_replica_inode(p
, dn
, finished
);
10064 next
= MDiscoverReply::DIR;
10068 // or dir_auth hint?
10069 if (m
->is_flag_error_dir() && !cur
->is_dir()) {
10071 cur
->take_waiting(CInode::WAIT_DIR
, error
);
10072 } else if (m
->is_flag_error_dir() || m
->get_dir_auth_hint() != CDIR_AUTH_UNKNOWN
) {
10073 mds_rank_t who
= m
->get_dir_auth_hint();
10074 if (who
== mds
->get_nodeid()) who
= -1;
10076 dout(7) << " dir_auth_hint is " << m
->get_dir_auth_hint() << dendl
;
10079 if (m
->get_wanted_base_dir()) {
10080 frag_t fg
= m
->get_base_dir_frag();
10081 CDir
*dir
= cur
->get_dirfrag(fg
);
10083 if (cur
->is_waiting_for_dir(fg
)) {
10084 if (cur
->is_auth())
10085 cur
->take_waiting(CInode::WAIT_DIR
, finished
);
10086 else if (dir
|| !cur
->dirfragtree
.is_leaf(fg
))
10087 cur
->take_dir_waiting(fg
, finished
);
10089 discover_dir_frag(cur
, fg
, 0, who
);
10091 dout(7) << " doing nothing, nobody is waiting for dir" << dendl
;
10095 if (m
->get_error_dentry().length()) {
10096 frag_t fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10097 CDir
*dir
= cur
->get_dirfrag(fg
);
10099 if (dir
&& dir
->is_waiting_for_dentry(m
->get_error_dentry(), m
->get_wanted_snapid())) {
10100 if (dir
->is_auth() || dir
->lookup(m
->get_error_dentry())) {
10101 dir
->take_dentry_waiting(m
->get_error_dentry(), m
->get_wanted_snapid(),
10102 m
->get_wanted_snapid(), finished
);
10104 filepath
relpath(m
->get_error_dentry(), 0);
10105 discover_path(dir
, m
->get_wanted_snapid(), relpath
, 0, m
->get_wanted_xlocked());
10108 dout(7) << " doing nothing, have dir but nobody is waiting on dentry "
10109 << m
->get_error_dentry() << dendl
;
10111 } else if (m
->is_flag_error_dn()) {
10112 frag_t fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10113 CDir
*dir
= cur
->get_dirfrag(fg
);
10115 if (dir
->is_auth()) {
10116 dir
->take_sub_waiting(finished
);
10118 dir
->take_dentry_waiting(m
->get_error_dentry(), m
->get_wanted_snapid(),
10119 m
->get_wanted_snapid(), error
);
10125 finish_contexts(g_ceph_context
, error
, -ENOENT
); // finish errors directly
10126 mds
->queue_waiters(finished
);
10134 // ----------------------------
10137 CDir
*MDCache::add_replica_dir(bufferlist::iterator
& p
, CInode
*diri
, mds_rank_t from
,
10138 list
<MDSInternalContextBase
*>& finished
)
10143 assert(diri
->ino() == df
.ino
);
10145 // add it (_replica_)
10146 CDir
*dir
= diri
->get_dirfrag(df
.frag
);
10149 // had replica. update w/ new nonce.
10150 dir
->decode_replica(p
);
10151 dout(7) << "add_replica_dir had " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10153 // force frag to leaf in the diri tree
10154 if (!diri
->dirfragtree
.is_leaf(df
.frag
)) {
10155 dout(7) << "add_replica_dir forcing frag " << df
.frag
<< " to leaf in the fragtree "
10156 << diri
->dirfragtree
<< dendl
;
10157 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, df
.frag
);
10161 dir
= diri
->add_dirfrag( new CDir(diri
, df
.frag
, this, false) );
10162 dir
->decode_replica(p
);
10164 // is this a dir_auth delegation boundary?
10165 if (from
!= diri
->authority().first
||
10166 diri
->is_ambiguous_auth() ||
10168 adjust_subtree_auth(dir
, from
);
10170 dout(7) << "add_replica_dir added " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10173 diri
->take_dir_waiting(df
.frag
, finished
);
10179 CDentry
*MDCache::add_replica_dentry(bufferlist::iterator
& p
, CDir
*dir
, list
<MDSInternalContextBase
*>& finished
)
10186 CDentry
*dn
= dir
->lookup(name
, last
);
10190 dn
->decode_replica(p
, false);
10191 dout(7) << "add_replica_dentry had " << *dn
<< dendl
;
10193 dn
= dir
->add_null_dentry(name
, 1 /* this will get updated below */, last
);
10194 dn
->decode_replica(p
, true);
10195 dout(7) << "add_replica_dentry added " << *dn
<< dendl
;
10198 dir
->take_dentry_waiting(name
, dn
->first
, dn
->last
, finished
);
10203 CInode
*MDCache::add_replica_inode(bufferlist::iterator
& p
, CDentry
*dn
, list
<MDSInternalContextBase
*>& finished
)
10209 CInode
*in
= get_inode(ino
, last
);
10211 in
= new CInode(this, false, 1, last
);
10212 in
->decode_replica(p
, true);
10214 if (in
->ino() == MDS_INO_ROOT
)
10215 in
->inode_auth
.first
= 0;
10216 else if (in
->is_mdsdir())
10217 in
->inode_auth
.first
= in
->ino() - MDS_INO_MDSDIR_OFFSET
;
10218 dout(10) << "add_replica_inode added " << *in
<< dendl
;
10220 assert(dn
->get_linkage()->is_null());
10221 dn
->dir
->link_primary_inode(dn
, in
);
10224 in
->decode_replica(p
, false);
10225 dout(10) << "add_replica_inode had " << *in
<< dendl
;
10229 if (!dn
->get_linkage()->is_primary() || dn
->get_linkage()->get_inode() != in
)
10230 dout(10) << "add_replica_inode different linkage in dentry " << *dn
<< dendl
;
10237 void MDCache::replicate_stray(CDentry
*straydn
, mds_rank_t who
, bufferlist
& bl
)
10239 uint64_t features
= mds
->mdsmap
->get_up_features();
10240 replicate_inode(get_myin(), who
, bl
, features
);
10241 replicate_dir(straydn
->get_dir()->inode
->get_parent_dn()->get_dir(), who
, bl
);
10242 replicate_dentry(straydn
->get_dir()->inode
->get_parent_dn(), who
, bl
);
10243 replicate_inode(straydn
->get_dir()->inode
, who
, bl
, features
);
10244 replicate_dir(straydn
->get_dir(), who
, bl
);
10245 replicate_dentry(straydn
, who
, bl
);
10248 CDentry
*MDCache::add_replica_stray(bufferlist
&bl
, mds_rank_t from
)
10250 list
<MDSInternalContextBase
*> finished
;
10251 bufferlist::iterator p
= bl
.begin();
10253 CInode
*mdsin
= add_replica_inode(p
, NULL
, finished
);
10254 CDir
*mdsdir
= add_replica_dir(p
, mdsin
, from
, finished
);
10255 CDentry
*straydirdn
= add_replica_dentry(p
, mdsdir
, finished
);
10256 CInode
*strayin
= add_replica_inode(p
, straydirdn
, finished
);
10257 CDir
*straydir
= add_replica_dir(p
, strayin
, from
, finished
);
10258 CDentry
*straydn
= add_replica_dentry(p
, straydir
, finished
);
10259 if (!finished
.empty())
10260 mds
->queue_waiters(finished
);
10266 int MDCache::send_dir_updates(CDir
*dir
, bool bcast
)
10268 // this is an FYI, re: replication
10270 set
<mds_rank_t
> who
;
10272 mds
->get_mds_map()->get_active_mds_set(who
);
10274 for (compact_map
<mds_rank_t
,unsigned>::iterator p
= dir
->replicas_begin();
10275 p
!= dir
->replicas_end();
10277 who
.insert(p
->first
);
10280 dout(7) << "sending dir_update on " << *dir
<< " bcast " << bcast
<< " to " << who
<< dendl
;
10283 dir
->inode
->make_path(path
);
10285 mds_rank_t whoami
= mds
->get_nodeid();
10286 for (set
<mds_rank_t
>::iterator it
= who
.begin();
10289 if (*it
== whoami
) continue;
10290 //if (*it == except) continue;
10291 dout(7) << "sending dir_update on " << *dir
<< " to " << *it
<< dendl
;
10293 mds
->send_message_mds(new MDirUpdate(mds
->get_nodeid(),
10305 /* This function DOES put the passed message before returning */
10306 void MDCache::handle_dir_update(MDirUpdate
*m
)
10308 dirfrag_t df
= m
->get_dirfrag();
10309 CDir
*dir
= get_dirfrag(df
);
10311 dout(5) << "dir_update on " << df
<< ", don't have it" << dendl
;
10314 if (m
->should_discover()) {
10316 // this is key to avoid a fragtree update race, among other things.
10317 m
->inc_tried_discover();
10318 vector
<CDentry
*> trace
;
10320 filepath path
= m
->get_path();
10321 dout(5) << "trying discover on dir_update for " << path
<< dendl
;
10322 MDRequestRef null_ref
;
10323 int r
= path_traverse(null_ref
, m
, NULL
, path
, &trace
, &in
, MDS_TRAVERSE_DISCOVER
);
10327 in
->ino() == df
.ino
&&
10328 in
->get_approx_dirfrag(df
.frag
) == NULL
) {
10329 open_remote_dirfrag(in
, df
.frag
, new C_MDS_RetryMessage(mds
, m
));
10338 if (!m
->has_tried_discover()) {
10339 // Update if it already exists. Othwerwise it got updated by discover reply.
10340 dout(5) << "dir_update on " << *dir
<< dendl
;
10341 dir
->dir_rep
= m
->get_dir_rep();
10342 dir
->dir_rep_by
= m
->get_dir_rep_by();
10355 void MDCache::send_dentry_link(CDentry
*dn
, MDRequestRef
& mdr
)
10357 dout(7) << "send_dentry_link " << *dn
<< dendl
;
10359 CDir
*subtree
= get_subtree_root(dn
->get_dir());
10360 for (compact_map
<mds_rank_t
,unsigned>::iterator p
= dn
->replicas_begin();
10361 p
!= dn
->replicas_end();
10363 // don't tell (rename) witnesses; they already know
10364 if (mdr
.get() && mdr
->more()->witnessed
.count(p
->first
))
10366 if (mds
->mdsmap
->get_state(p
->first
) < MDSMap::STATE_REJOIN
||
10367 (mds
->mdsmap
->get_state(p
->first
) == MDSMap::STATE_REJOIN
&&
10368 rejoin_gather
.count(p
->first
)))
10370 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10371 MDentryLink
*m
= new MDentryLink(subtree
->dirfrag(), dn
->get_dir()->dirfrag(),
10372 dn
->name
, dnl
->is_primary());
10373 if (dnl
->is_primary()) {
10374 dout(10) << " primary " << *dnl
->get_inode() << dendl
;
10375 replicate_inode(dnl
->get_inode(), p
->first
, m
->bl
,
10376 mds
->mdsmap
->get_up_features());
10377 } else if (dnl
->is_remote()) {
10378 inodeno_t ino
= dnl
->get_remote_ino();
10379 __u8 d_type
= dnl
->get_remote_d_type();
10380 dout(10) << " remote " << ino
<< " " << d_type
<< dendl
;
10381 ::encode(ino
, m
->bl
);
10382 ::encode(d_type
, m
->bl
);
10384 ceph_abort(); // aie, bad caller!
10385 mds
->send_message_mds(m
, p
->first
);
10389 /* This function DOES put the passed message before returning */
10390 void MDCache::handle_dentry_link(MDentryLink
*m
)
10393 CDentry
*dn
= NULL
;
10394 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10396 dout(7) << "handle_dentry_link don't have dirfrag " << m
->get_dirfrag() << dendl
;
10398 dn
= dir
->lookup(m
->get_dn());
10400 dout(7) << "handle_dentry_link don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10402 dout(7) << "handle_dentry_link on " << *dn
<< dendl
;
10403 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10405 assert(!dn
->is_auth());
10406 assert(dnl
->is_null());
10410 bufferlist::iterator p
= m
->bl
.begin();
10411 list
<MDSInternalContextBase
*> finished
;
10413 if (m
->get_is_primary()) {
10415 add_replica_inode(p
, dn
, finished
);
10417 // remote link, easy enough.
10421 ::decode(d_type
, p
);
10422 dir
->link_remote_inode(dn
, ino
, d_type
);
10428 if (!finished
.empty())
10429 mds
->queue_waiters(finished
);
10438 void MDCache::send_dentry_unlink(CDentry
*dn
, CDentry
*straydn
, MDRequestRef
& mdr
)
10440 dout(10) << "send_dentry_unlink " << *dn
<< dendl
;
10441 // share unlink news with replicas
10442 set
<mds_rank_t
> replicas
;
10443 dn
->list_replicas(replicas
);
10445 straydn
->list_replicas(replicas
);
10446 for (set
<mds_rank_t
>::iterator it
= replicas
.begin();
10447 it
!= replicas
.end();
10449 // don't tell (rmdir) witnesses; they already know
10450 if (mdr
.get() && mdr
->more()->witnessed
.count(*it
))
10453 if (mds
->mdsmap
->get_state(*it
) < MDSMap::STATE_REJOIN
||
10454 (mds
->mdsmap
->get_state(*it
) == MDSMap::STATE_REJOIN
&&
10455 rejoin_gather
.count(*it
)))
10458 MDentryUnlink
*unlink
= new MDentryUnlink(dn
->get_dir()->dirfrag(), dn
->name
);
10460 replicate_stray(straydn
, *it
, unlink
->straybl
);
10461 mds
->send_message_mds(unlink
, *it
);
10465 /* This function DOES put the passed message before returning */
10466 void MDCache::handle_dentry_unlink(MDentryUnlink
*m
)
10469 CDentry
*straydn
= NULL
;
10470 if (m
->straybl
.length())
10471 straydn
= add_replica_stray(m
->straybl
, mds_rank_t(m
->get_source().num()));
10473 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10475 dout(7) << "handle_dentry_unlink don't have dirfrag " << m
->get_dirfrag() << dendl
;
10477 CDentry
*dn
= dir
->lookup(m
->get_dn());
10479 dout(7) << "handle_dentry_unlink don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10481 dout(7) << "handle_dentry_unlink on " << *dn
<< dendl
;
10482 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10485 if (dnl
->is_primary()) {
10486 CInode
*in
= dnl
->get_inode();
10487 dn
->dir
->unlink_inode(dn
);
10489 straydn
->dir
->link_primary_inode(straydn
, in
);
10491 // in->first is lazily updated on replica; drag it forward so
10492 // that we always keep it in sync with the dnq
10493 assert(straydn
->first
>= in
->first
);
10494 in
->first
= straydn
->first
;
10496 // update subtree map?
10498 adjust_subtree_after_rename(in
, dir
, false);
10500 // send caps to auth (if we're not already)
10501 if (in
->is_any_caps() &&
10502 !in
->state_test(CInode::STATE_EXPORTINGCAPS
))
10503 migrator
->export_caps(in
);
10508 assert(dnl
->is_remote());
10509 dn
->dir
->unlink_inode(dn
);
10511 assert(dnl
->is_null());
10515 // race with trim_dentry()
10517 assert(straydn
->get_num_ref() == 0);
10518 assert(straydn
->get_linkage()->is_null());
10519 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
10520 trim_dentry(straydn
, expiremap
);
10521 send_expire_messages(expiremap
);
10533 // ===================================================================
10537 // ===================================================================
10542 * adjust_dir_fragments -- adjust fragmentation for a directory
10544 * @param diri directory inode
10545 * @param basefrag base fragment
10546 * @param bits bit adjustment. positive for split, negative for merge.
10548 void MDCache::adjust_dir_fragments(CInode
*diri
, frag_t basefrag
, int bits
,
10549 list
<CDir
*>& resultfrags
,
10550 list
<MDSInternalContextBase
*>& waiters
,
10553 dout(10) << "adjust_dir_fragments " << basefrag
<< " " << bits
10554 << " on " << *diri
<< dendl
;
10556 list
<CDir
*> srcfrags
;
10557 diri
->get_dirfrags_under(basefrag
, srcfrags
);
10559 adjust_dir_fragments(diri
, srcfrags
, basefrag
, bits
, resultfrags
, waiters
, replay
);
10562 CDir
*MDCache::force_dir_fragment(CInode
*diri
, frag_t fg
, bool replay
)
10564 CDir
*dir
= diri
->get_dirfrag(fg
);
10568 dout(10) << "force_dir_fragment " << fg
<< " on " << *diri
<< dendl
;
10570 list
<CDir
*> src
, result
;
10571 list
<MDSInternalContextBase
*> waiters
;
10574 frag_t parent
= diri
->dirfragtree
.get_branch_or_leaf(fg
);
10576 CDir
*pdir
= diri
->get_dirfrag(parent
);
10578 int split
= fg
.bits() - parent
.bits();
10579 dout(10) << " splitting parent by " << split
<< " " << *pdir
<< dendl
;
10580 src
.push_back(pdir
);
10581 adjust_dir_fragments(diri
, src
, parent
, split
, result
, waiters
, replay
);
10582 dir
= diri
->get_dirfrag(fg
);
10584 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10588 if (parent
== frag_t())
10590 frag_t last
= parent
;
10591 parent
= parent
.parent();
10592 dout(10) << " " << last
<< " parent is " << parent
<< dendl
;
10596 // hoover up things under fg?
10597 diri
->get_dirfrags_under(fg
, src
);
10599 dout(10) << "force_dir_fragment no frags under " << fg
<< dendl
;
10601 dout(10) << " will combine frags under " << fg
<< ": " << src
<< dendl
;
10602 adjust_dir_fragments(diri
, src
, fg
, 0, result
, waiters
, replay
);
10603 dir
= result
.front();
10604 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10608 mds
->queue_waiters(waiters
);
10612 void MDCache::adjust_dir_fragments(CInode
*diri
,
10613 list
<CDir
*>& srcfrags
,
10614 frag_t basefrag
, int bits
,
10615 list
<CDir
*>& resultfrags
,
10616 list
<MDSInternalContextBase
*>& waiters
,
10619 dout(10) << "adjust_dir_fragments " << basefrag
<< " bits " << bits
10620 << " srcfrags " << srcfrags
10621 << " on " << *diri
<< dendl
;
10624 // yuck. we may have discovered the inode while it was being fragmented.
10625 if (!diri
->dirfragtree
.is_leaf(basefrag
))
10626 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, basefrag
);
10629 diri
->dirfragtree
.split(basefrag
, bits
);
10630 dout(10) << " new fragtree is " << diri
->dirfragtree
<< dendl
;
10632 if (srcfrags
.empty())
10636 CDir
*parent_dir
= diri
->get_parent_dir();
10637 CDir
*parent_subtree
= 0;
10639 parent_subtree
= get_subtree_root(parent_dir
);
10643 assert(srcfrags
.size() == 1);
10644 CDir
*dir
= srcfrags
.front();
10646 dir
->split(bits
, resultfrags
, waiters
, replay
);
10648 // did i change the subtree map?
10649 if (dir
->is_subtree_root()) {
10650 // new frags are now separate subtrees
10651 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10652 p
!= resultfrags
.end();
10654 subtrees
[*p
].clear(); // new frag is now its own subtree
10657 if (parent_subtree
) {
10658 assert(subtrees
[parent_subtree
].count(dir
));
10659 subtrees
[parent_subtree
].erase(dir
);
10660 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10661 p
!= resultfrags
.end();
10663 assert((*p
)->is_subtree_root());
10664 subtrees
[parent_subtree
].insert(*p
);
10668 // adjust my bounds.
10670 bounds
.swap(subtrees
[dir
]);
10671 subtrees
.erase(dir
);
10672 for (set
<CDir
*>::iterator p
= bounds
.begin();
10675 CDir
*frag
= get_subtree_root((*p
)->get_parent_dir());
10676 subtrees
[frag
].insert(*p
);
10681 // dir has no PIN_SUBTREE; CDir::purge_stolen() drops it.
10682 dir
->dir_auth
= CDIR_AUTH_DEFAULT
;
10685 diri
->close_dirfrag(dir
->get_frag());
10690 // are my constituent bits subtrees? if so, i will be too.
10691 // (it's all or none, actually.)
10692 bool any_subtree
= false;
10693 for (CDir
*dir
: srcfrags
) {
10694 if (dir
->is_subtree_root()) {
10695 any_subtree
= true;
10699 set
<CDir
*> new_bounds
;
10701 for (CDir
*dir
: srcfrags
) {
10702 // this simplifies the code that find subtrees underneath the dirfrag
10703 if (!dir
->is_subtree_root()) {
10704 dir
->state_set(CDir::STATE_AUXSUBTREE
);
10705 adjust_subtree_auth(dir
, mds
->get_nodeid());
10709 for (CDir
*dir
: srcfrags
) {
10710 assert(dir
->is_subtree_root());
10711 dout(10) << " taking srcfrag subtree bounds from " << *dir
<< dendl
;
10712 map
<CDir
*, set
<CDir
*> >::iterator q
= subtrees
.find(dir
);
10713 set
<CDir
*>::iterator r
= q
->second
.begin();
10714 while (r
!= subtrees
[dir
].end()) {
10715 new_bounds
.insert(*r
);
10716 subtrees
[dir
].erase(r
++);
10720 // remove myself as my parent's bound
10721 if (parent_subtree
)
10722 subtrees
[parent_subtree
].erase(dir
);
10727 CDir
*f
= new CDir(diri
, basefrag
, this, srcfrags
.front()->is_auth());
10728 f
->merge(srcfrags
, waiters
, replay
);
10731 assert(f
->is_subtree_root());
10732 subtrees
[f
].swap(new_bounds
);
10733 if (parent_subtree
)
10734 subtrees
[parent_subtree
].insert(f
);
10739 resultfrags
.push_back(f
);
10744 class C_MDC_FragmentFrozen
: public MDSInternalContext
{
10748 C_MDC_FragmentFrozen(MDCache
*m
, MDRequestRef
& r
) :
10749 MDSInternalContext(m
->mds
), mdcache(m
), mdr(r
) {}
10750 void finish(int r
) override
{
10751 mdcache
->fragment_frozen(mdr
, r
);
10755 bool MDCache::can_fragment(CInode
*diri
, list
<CDir
*>& dirs
)
10757 if (is_readonly()) {
10758 dout(7) << "can_fragment: read-only FS, no fragmenting for now" << dendl
;
10761 if (mds
->is_cluster_degraded()) {
10762 dout(7) << "can_fragment: cluster degraded, no fragmenting for now" << dendl
;
10765 if (diri
->get_parent_dir() &&
10766 diri
->get_parent_dir()->get_inode()->is_stray()) {
10767 dout(7) << "can_fragment: i won't merge|split anything in stray" << dendl
;
10770 if (diri
->is_mdsdir() || diri
->is_stray() || diri
->ino() == MDS_INO_CEPH
) {
10771 dout(7) << "can_fragment: i won't fragment the mdsdir or straydir or .ceph" << dendl
;
10775 if (diri
->scrub_is_in_progress()) {
10776 dout(7) << "can_fragment: scrub in progress" << dendl
;
10780 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10782 if (dir
->state_test(CDir::STATE_FRAGMENTING
)) {
10783 dout(7) << "can_fragment: already fragmenting " << *dir
<< dendl
;
10786 if (!dir
->is_auth()) {
10787 dout(7) << "can_fragment: not auth on " << *dir
<< dendl
;
10790 if (dir
->is_bad()) {
10791 dout(7) << "can_fragment: bad dirfrag " << *dir
<< dendl
;
10794 if (dir
->is_frozen() ||
10795 dir
->is_freezing()) {
10796 dout(7) << "can_fragment: can't merge, freezing|frozen. wait for other exports to finish first." << dendl
;
10804 void MDCache::split_dir(CDir
*dir
, int bits
)
10806 dout(7) << __func__
<< " " << *dir
<< " bits " << bits
<< dendl
;
10807 assert(dir
->is_auth());
10808 CInode
*diri
= dir
->inode
;
10811 dirs
.push_back(dir
);
10813 if (!can_fragment(diri
, dirs
)) {
10814 dout(7) << __func__
<< " cannot fragment right now, dropping" << dendl
;
10818 if (dir
->frag
.bits() + bits
> 24) {
10819 dout(7) << __func__
<< " frag bits > 24, dropping" << dendl
;
10823 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10824 mdr
->more()->fragment_base
= dir
->dirfrag();
10826 assert(fragments
.count(dir
->dirfrag()) == 0);
10827 fragment_info_t
& info
= fragments
[dir
->dirfrag()];
10829 info
.dirs
.push_back(dir
);
10831 info
.last_cum_auth_pins_change
= ceph_clock_now();
10833 fragment_freeze_dirs(dirs
);
10834 // initial mark+complete pass
10835 fragment_mark_and_complete(mdr
);
10838 void MDCache::merge_dir(CInode
*diri
, frag_t frag
)
10840 dout(7) << "merge_dir to " << frag
<< " on " << *diri
<< dendl
;
10843 if (!diri
->get_dirfrags_under(frag
, dirs
)) {
10844 dout(7) << "don't have all frags under " << frag
<< " for " << *diri
<< dendl
;
10848 if (diri
->dirfragtree
.is_leaf(frag
)) {
10849 dout(10) << " " << frag
<< " already a leaf for " << *diri
<< dendl
;
10853 if (!can_fragment(diri
, dirs
))
10856 CDir
*first
= dirs
.front();
10857 int bits
= first
->get_frag().bits() - frag
.bits();
10858 dout(10) << " we are merginb by " << bits
<< " bits" << dendl
;
10860 dirfrag_t
basedirfrag(diri
->ino(), frag
);
10861 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10862 mdr
->more()->fragment_base
= basedirfrag
;
10864 assert(fragments
.count(basedirfrag
) == 0);
10865 fragment_info_t
& info
= fragments
[basedirfrag
];
10869 info
.last_cum_auth_pins_change
= ceph_clock_now();
10871 fragment_freeze_dirs(dirs
);
10872 // initial mark+complete pass
10873 fragment_mark_and_complete(mdr
);
10876 void MDCache::fragment_freeze_dirs(list
<CDir
*>& dirs
)
10878 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10880 dir
->auth_pin(dir
); // until we mark and complete them
10881 dir
->state_set(CDir::STATE_FRAGMENTING
);
10883 assert(dir
->is_freezing_dir());
10887 class C_MDC_FragmentMarking
: public MDCacheContext
{
10890 C_MDC_FragmentMarking(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
10891 void finish(int r
) override
{
10892 mdcache
->fragment_mark_and_complete(mdr
);
10896 void MDCache::fragment_mark_and_complete(MDRequestRef
& mdr
)
10898 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
10899 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
10900 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
10901 dout(7) << "fragment_mark_and_complete " << basedirfrag
<< " must have aborted" << dendl
;
10902 request_finish(mdr
);
10906 fragment_info_t
& info
= it
->second
;
10907 CInode
*diri
= info
.dirs
.front()->get_inode();
10908 dout(10) << "fragment_mark_and_complete " << info
.dirs
<< " on " << *diri
<< dendl
;
10910 MDSGatherBuilder
gather(g_ceph_context
);
10912 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
10913 p
!= info
.dirs
.end();
10918 if (!dir
->is_complete()) {
10919 dout(15) << " fetching incomplete " << *dir
<< dendl
;
10920 dir
->fetch(gather
.new_sub(), true); // ignore authpinnability
10922 } else if (dir
->get_frag() == frag_t()) {
10923 // The COMPLETE flag gets lost if we fragment a new dirfrag, then rollback
10924 // the operation. To avoid CDir::fetch() complaining about missing object,
10925 // we commit new dirfrag first.
10926 if (dir
->state_test(CDir::STATE_CREATING
)) {
10927 dout(15) << " waiting until new dir gets journaled " << *dir
<< dendl
;
10928 dir
->add_waiter(CDir::WAIT_CREATED
, gather
.new_sub());
10930 } else if (dir
->is_new()) {
10931 dout(15) << " committing new " << *dir
<< dendl
;
10932 assert(dir
->is_dirty());
10933 dir
->commit(0, gather
.new_sub(), true);
10940 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
10941 dout(15) << " marking " << *dir
<< dendl
;
10942 for (CDir::map_t::iterator p
= dir
->items
.begin();
10943 p
!= dir
->items
.end();
10945 CDentry
*dn
= p
->second
;
10946 dn
->get(CDentry::PIN_FRAGMENTING
);
10947 assert(!dn
->state_test(CDentry::STATE_FRAGMENTING
));
10948 dn
->state_set(CDentry::STATE_FRAGMENTING
);
10950 dir
->state_set(CDir::STATE_DNPINNEDFRAG
);
10951 dir
->auth_unpin(dir
);
10953 dout(15) << " already marked " << *dir
<< dendl
;
10956 if (gather
.has_subs()) {
10957 gather
.set_finisher(new C_MDC_FragmentMarking(this, mdr
));
10962 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
10963 p
!= info
.dirs
.end();
10966 if (!dir
->is_frozen_dir()) {
10967 assert(dir
->is_freezing_dir());
10968 dir
->add_waiter(CDir::WAIT_FROZEN
, gather
.new_sub());
10971 if (gather
.has_subs()) {
10972 gather
.set_finisher(new C_MDC_FragmentFrozen(this, mdr
));
10974 // flush log so that request auth_pins are retired
10975 mds
->mdlog
->flush();
10979 fragment_frozen(mdr
, 0);
10982 void MDCache::fragment_unmark_unfreeze_dirs(list
<CDir
*>& dirs
)
10984 dout(10) << "fragment_unmark_unfreeze_dirs " << dirs
<< dendl
;
10985 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10987 dout(10) << " frag " << *dir
<< dendl
;
10989 assert(dir
->state_test(CDir::STATE_FRAGMENTING
));
10990 dir
->state_clear(CDir::STATE_FRAGMENTING
);
10992 if (dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
10993 dir
->state_clear(CDir::STATE_DNPINNEDFRAG
);
10995 for (CDir::map_t::iterator p
= dir
->items
.begin();
10996 p
!= dir
->items
.end();
10998 CDentry
*dn
= p
->second
;
10999 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
11000 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
11001 dn
->put(CDentry::PIN_FRAGMENTING
);
11004 dir
->auth_unpin(dir
);
11007 dir
->unfreeze_dir();
11011 bool MDCache::fragment_are_all_frozen(CDir
*dir
)
11013 assert(dir
->is_frozen_dir());
11014 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
11015 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
11016 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
11018 if (p
->first
.frag
.contains(dir
->get_frag()))
11019 return p
->second
.all_frozen
;
11025 void MDCache::fragment_freeze_inc_num_waiters(CDir
*dir
)
11027 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
11028 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
11029 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
11031 if (p
->first
.frag
.contains(dir
->get_frag())) {
11032 p
->second
.num_remote_waiters
++;
11039 void MDCache::find_stale_fragment_freeze()
11041 dout(10) << "find_stale_fragment_freeze" << dendl
;
11042 // see comment in Migrator::find_stale_export_freeze()
11043 utime_t now
= ceph_clock_now();
11044 utime_t cutoff
= now
;
11045 cutoff
-= g_conf
->mds_freeze_tree_timeout
;
11047 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
11048 p
!= fragments
.end(); ) {
11049 dirfrag_t df
= p
->first
;
11050 fragment_info_t
& info
= p
->second
;
11052 if (info
.all_frozen
)
11055 int total_auth_pins
= 0;
11056 for (list
<CDir
*>::iterator q
= info
.dirs
.begin();
11057 q
!= info
.dirs
.end();
11060 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
11061 total_auth_pins
= -1;
11064 if (dir
->is_frozen_dir())
11066 total_auth_pins
+= dir
->get_auth_pins() + dir
->get_dir_auth_pins();
11068 if (total_auth_pins
< 0)
11070 if (info
.last_cum_auth_pins
!= total_auth_pins
) {
11071 info
.last_cum_auth_pins
= total_auth_pins
;
11072 info
.last_cum_auth_pins_change
= now
;
11075 if (info
.last_cum_auth_pins_change
>= cutoff
)
11077 dir
= info
.dirs
.front();
11078 if (info
.num_remote_waiters
> 0 ||
11079 (!dir
->inode
->is_root() && dir
->get_parent_dir()->is_freezing())) {
11080 dout(10) << " cancel fragmenting " << df
<< " bit " << info
.bits
<< dendl
;
11082 info
.dirs
.swap(dirs
);
11083 fragments
.erase(df
);
11084 fragment_unmark_unfreeze_dirs(dirs
);
11089 class C_MDC_FragmentPrep
: public MDCacheLogContext
{
11092 C_MDC_FragmentPrep(MDCache
*m
, MDRequestRef
& r
) : MDCacheLogContext(m
), mdr(r
) {}
11093 void finish(int r
) override
{
11094 mdcache
->_fragment_logged(mdr
);
11098 class C_MDC_FragmentStore
: public MDCacheContext
{
11101 C_MDC_FragmentStore(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
11102 void finish(int r
) override
{
11103 mdcache
->_fragment_stored(mdr
);
11107 class C_MDC_FragmentCommit
: public MDCacheLogContext
{
11108 dirfrag_t basedirfrag
;
11109 list
<CDir
*> resultfrags
;
11111 C_MDC_FragmentCommit(MDCache
*m
, dirfrag_t df
, list
<CDir
*>& l
) :
11112 MDCacheLogContext(m
), basedirfrag(df
), resultfrags(l
) {}
11113 void finish(int r
) override
{
11114 mdcache
->_fragment_committed(basedirfrag
, resultfrags
);
11118 class C_IO_MDC_FragmentFinish
: public MDCacheIOContext
{
11119 dirfrag_t basedirfrag
;
11120 list
<CDir
*> resultfrags
;
11122 C_IO_MDC_FragmentFinish(MDCache
*m
, dirfrag_t f
, list
<CDir
*>& l
) :
11123 MDCacheIOContext(m
), basedirfrag(f
) {
11124 resultfrags
.swap(l
);
11126 void finish(int r
) override
{
11127 assert(r
== 0 || r
== -ENOENT
);
11128 mdcache
->_fragment_finish(basedirfrag
, resultfrags
);
11132 void MDCache::fragment_frozen(MDRequestRef
& mdr
, int r
)
11134 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11135 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11136 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11137 dout(7) << "fragment_frozen " << basedirfrag
<< " must have aborted" << dendl
;
11138 request_finish(mdr
);
11143 fragment_info_t
& info
= it
->second
;
11144 dout(10) << "fragment_frozen " << basedirfrag
.frag
<< " by " << info
.bits
11145 << " on " << info
.dirs
.front()->get_inode() << dendl
;
11147 info
.all_frozen
= true;
11148 dispatch_fragment_dir(mdr
);
11151 void MDCache::dispatch_fragment_dir(MDRequestRef
& mdr
)
11153 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11154 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11155 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11156 dout(7) << "dispatch_fragment_dir " << basedirfrag
<< " must have aborted" << dendl
;
11157 request_finish(mdr
);
11161 fragment_info_t
& info
= it
->second
;
11162 CInode
*diri
= info
.dirs
.front()->get_inode();
11164 dout(10) << "dispatch_fragment_dir " << basedirfrag
<< " bits " << info
.bits
11165 << " on " << *diri
<< dendl
;
11166 if (!mdr
->aborted
) {
11167 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
11168 wrlocks
.insert(&diri
->dirfragtreelock
);
11169 // prevent a racing gather on any other scatterlocks too
11170 wrlocks
.insert(&diri
->nestlock
);
11171 wrlocks
.insert(&diri
->filelock
);
11172 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
, NULL
, NULL
, true))
11177 if (mdr
->aborted
) {
11178 dout(10) << " can't auth_pin " << *diri
<< ", requeuing dir "
11179 << info
.dirs
.front()->dirfrag() << dendl
;
11181 mds
->balancer
->queue_split(info
.dirs
.front(), false);
11183 mds
->balancer
->queue_merge(info
.dirs
.front());
11184 fragment_unmark_unfreeze_dirs(info
.dirs
);
11185 fragments
.erase(it
);
11186 request_finish(mdr
);
11190 mdr
->ls
= mds
->mdlog
->get_current_segment();
11191 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_PREPARE
, basedirfrag
, info
.bits
);
11192 mds
->mdlog
->start_entry(le
);
11194 for (list
<CDir
*>::iterator p
= info
.dirs
.begin(); p
!= info
.dirs
.end(); ++p
) {
11196 dirfrag_rollback rollback
;
11197 rollback
.fnode
= dir
->fnode
;
11198 le
->add_orig_frag(dir
->get_frag(), &rollback
);
11202 list
<MDSInternalContextBase
*> waiters
;
11203 adjust_dir_fragments(diri
, info
.dirs
, basedirfrag
.frag
, info
.bits
,
11204 info
.resultfrags
, waiters
, false);
11205 if (g_conf
->mds_debug_frag
)
11206 diri
->verify_dirfrags();
11207 mds
->queue_waiters(waiters
);
11209 for (list
<frag_t
>::iterator p
= le
->orig_frags
.begin(); p
!= le
->orig_frags
.end(); ++p
)
11210 assert(!diri
->dirfragtree
.is_leaf(*p
));
11212 le
->metablob
.add_dir_context(*info
.resultfrags
.begin());
11213 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11214 p
!= info
.resultfrags
.end();
11216 if (diri
->is_auth()) {
11217 le
->metablob
.add_fragmented_dir(*p
, false, false);
11219 (*p
)->state_set(CDir::STATE_DIRTYDFT
);
11220 le
->metablob
.add_fragmented_dir(*p
, false, true);
11225 if (diri
->is_auth()) {
11226 // journal dirfragtree
11227 inode_t
*pi
= diri
->project_inode();
11228 pi
->version
= diri
->pre_dirty();
11229 journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
11231 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11232 mdr
->ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11233 mdr
->add_updated_lock(&diri
->dirfragtreelock
);
11238 mds->locker->mark_updated_scatterlock(&diri->filelock);
11239 mut->ls->dirty_dirfrag_dir.push_back(&diri->item_dirty_dirfrag_dir);
11240 mut->add_updated_lock(&diri->filelock);
11243 mds->locker->mark_updated_scatterlock(&diri->nestlock);
11244 mut->ls->dirty_dirfrag_nest.push_back(&diri->item_dirty_dirfrag_nest);
11245 mut->add_updated_lock(&diri->nestlock);
11248 add_uncommitted_fragment(basedirfrag
, info
.bits
, le
->orig_frags
, mdr
->ls
);
11249 mds
->server
->submit_mdlog_entry(le
, new C_MDC_FragmentPrep(this, mdr
),
11251 mds
->mdlog
->flush();
11254 void MDCache::_fragment_logged(MDRequestRef
& mdr
)
11256 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11257 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11258 assert(it
!= fragments
.end());
11259 fragment_info_t
&info
= it
->second
;
11260 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11262 dout(10) << "fragment_logged " << basedirfrag
<< " bits " << info
.bits
11263 << " on " << *diri
<< dendl
;
11265 if (diri
->is_auth())
11266 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
11268 mdr
->apply(); // mark scatterlock
11270 // store resulting frags
11271 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_FragmentStore(this, mdr
));
11273 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11274 p
!= info
.resultfrags
.end();
11277 dout(10) << " storing result frag " << *dir
<< dendl
;
11279 // freeze and store them too
11280 dir
->auth_pin(this);
11281 dir
->state_set(CDir::STATE_FRAGMENTING
);
11282 dir
->commit(0, gather
.new_sub(), true); // ignore authpinnability
11288 void MDCache::_fragment_stored(MDRequestRef
& mdr
)
11290 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11291 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11292 assert(it
!= fragments
.end());
11293 fragment_info_t
&info
= it
->second
;
11294 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11296 dout(10) << "fragment_stored " << basedirfrag
<< " bits " << info
.bits
11297 << " on " << *diri
<< dendl
;
11300 CDir
*first
= *info
.resultfrags
.begin();
11301 for (compact_map
<mds_rank_t
,unsigned>::iterator p
= first
->replicas_begin();
11302 p
!= first
->replicas_end();
11304 if (mds
->mdsmap
->get_state(p
->first
) < MDSMap::STATE_REJOIN
||
11305 (mds
->mdsmap
->get_state(p
->first
) == MDSMap::STATE_REJOIN
&&
11306 rejoin_gather
.count(p
->first
)))
11309 MMDSFragmentNotify
*notify
= new MMDSFragmentNotify(basedirfrag
, info
.bits
);
11311 // freshly replicate new dirs to peers
11312 for (list
<CDir
*>::iterator q
= info
.resultfrags
.begin();
11313 q
!= info
.resultfrags
.end();
11315 replicate_dir(*q
, p
->first
, notify
->basebl
);
11317 mds
->send_message_mds(notify
, p
->first
);
11321 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_COMMIT
, basedirfrag
, info
.bits
);
11322 mds
->mdlog
->start_submit_entry(le
, new C_MDC_FragmentCommit(this, basedirfrag
,
11323 info
.resultfrags
));
11325 mds
->locker
->drop_locks(mdr
.get());
11327 // unfreeze resulting frags
11328 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11329 p
!= info
.resultfrags
.end();
11332 dout(10) << " result frag " << *dir
<< dendl
;
11334 for (CDir::map_t::iterator p
= dir
->items
.begin();
11335 p
!= dir
->items
.end();
11337 CDentry
*dn
= p
->second
;
11338 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
11339 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
11340 dn
->put(CDentry::PIN_FRAGMENTING
);
11344 dir
->unfreeze_dir();
11347 fragments
.erase(it
);
11348 request_finish(mdr
);
11351 void MDCache::_fragment_committed(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11353 dout(10) << "fragment_committed " << basedirfrag
<< dendl
;
11354 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11355 assert(it
!= uncommitted_fragments
.end());
11356 ufragment
&uf
= it
->second
;
11358 // remove old frags
11359 C_GatherBuilder
gather(
11362 new C_IO_MDC_FragmentFinish(this, basedirfrag
, resultfrags
),
11365 SnapContext nullsnapc
;
11366 object_locator_t
oloc(mds
->mdsmap
->get_metadata_pool());
11367 for (list
<frag_t
>::iterator p
= uf
.old_frags
.begin();
11368 p
!= uf
.old_frags
.end();
11370 object_t oid
= CInode::get_object_name(basedirfrag
.ino
, *p
, "");
11371 ObjectOperation op
;
11372 if (*p
== frag_t()) {
11373 // backtrace object
11374 dout(10) << " truncate orphan dirfrag " << oid
<< dendl
;
11378 dout(10) << " removing orphan dirfrag " << oid
<< dendl
;
11381 mds
->objecter
->mutate(oid
, oloc
, op
, nullsnapc
,
11382 ceph::real_clock::now(),
11383 0, gather
.new_sub());
11386 assert(gather
.has_subs());
11390 void MDCache::_fragment_finish(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11392 dout(10) << "fragment_finish " << basedirfrag
<< "resultfrags.size="
11393 << resultfrags
.size() << dendl
;
11394 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11395 assert(it
!= uncommitted_fragments
.end());
11396 ufragment
&uf
= it
->second
;
11398 // unmark & auth_unpin
11399 for (const auto &dir
: resultfrags
) {
11400 dir
->state_clear(CDir::STATE_FRAGMENTING
);
11401 dir
->auth_unpin(this);
11403 // In case the resulting fragments are beyond the split size,
11404 // we might need to split them again right away (they could
11405 // have been taking inserts between unfreezing and getting
11407 mds
->balancer
->maybe_fragment(dir
, false);
11411 if (resultfrags
.size() > 1) {
11412 mds
->logger
->inc(l_mds_dir_split
);
11414 mds
->logger
->inc(l_mds_dir_merge
);
11418 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_FINISH
, basedirfrag
, uf
.bits
);
11419 mds
->mdlog
->start_submit_entry(le
);
11421 finish_uncommitted_fragment(basedirfrag
, EFragment::OP_FINISH
);
11424 /* This function DOES put the passed message before returning */
11425 void MDCache::handle_fragment_notify(MMDSFragmentNotify
*notify
)
11427 dout(10) << "handle_fragment_notify " << *notify
<< " from " << notify
->get_source() << dendl
;
11429 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
11434 CInode
*diri
= get_inode(notify
->get_ino());
11436 frag_t base
= notify
->get_basefrag();
11437 int bits
= notify
->get_bits();
11440 if ((bits < 0 && diri->dirfragtree.is_leaf(base)) ||
11441 (bits > 0 && !diri->dirfragtree.is_leaf(base))) {
11442 dout(10) << " dft " << diri->dirfragtree << " state doesn't match " << base << " by " << bits
11443 << ", must have found out during resolve/rejoin? ignoring. " << *diri << dendl;
11450 list
<MDSInternalContextBase
*> waiters
;
11451 list
<CDir
*> resultfrags
;
11452 adjust_dir_fragments(diri
, base
, bits
, resultfrags
, waiters
, false);
11453 if (g_conf
->mds_debug_frag
)
11454 diri
->verify_dirfrags();
11456 for (list
<CDir
*>::iterator p
= resultfrags
.begin(); p
!= resultfrags
.end(); ++p
)
11457 diri
->take_dir_waiting((*p
)->get_frag(), waiters
);
11459 // add new replica dirs values
11460 bufferlist::iterator p
= notify
->basebl
.begin();
11462 add_replica_dir(p
, diri
, mds_rank_t(notify
->get_source().num()), waiters
);
11464 mds
->queue_waiters(waiters
);
11472 void MDCache::add_uncommitted_fragment(dirfrag_t basedirfrag
, int bits
, list
<frag_t
>& old_frags
,
11473 LogSegment
*ls
, bufferlist
*rollback
)
11475 dout(10) << "add_uncommitted_fragment: base dirfrag " << basedirfrag
<< " bits " << bits
<< dendl
;
11476 assert(!uncommitted_fragments
.count(basedirfrag
));
11477 ufragment
& uf
= uncommitted_fragments
[basedirfrag
];
11478 uf
.old_frags
= old_frags
;
11481 ls
->uncommitted_fragments
.insert(basedirfrag
);
11483 uf
.rollback
.swap(*rollback
);
11486 void MDCache::finish_uncommitted_fragment(dirfrag_t basedirfrag
, int op
)
11488 dout(10) << "finish_uncommitted_fragments: base dirfrag " << basedirfrag
11489 << " op " << EFragment::op_name(op
) << dendl
;
11490 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11491 if (it
!= uncommitted_fragments
.end()) {
11492 ufragment
& uf
= it
->second
;
11493 if (op
!= EFragment::OP_FINISH
&& !uf
.old_frags
.empty()) {
11494 uf
.committed
= true;
11496 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11497 mds
->queue_waiters(uf
.waiters
);
11498 uncommitted_fragments
.erase(it
);
11503 void MDCache::rollback_uncommitted_fragment(dirfrag_t basedirfrag
, list
<frag_t
>& old_frags
)
11505 dout(10) << "rollback_uncommitted_fragment: base dirfrag " << basedirfrag
11506 << " old_frags (" << old_frags
<< ")" << dendl
;
11507 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11508 if (it
!= uncommitted_fragments
.end()) {
11509 ufragment
& uf
= it
->second
;
11510 if (!uf
.old_frags
.empty()) {
11511 uf
.old_frags
.swap(old_frags
);
11512 uf
.committed
= true;
11514 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11515 uncommitted_fragments
.erase(it
);
11520 void MDCache::rollback_uncommitted_fragments()
11522 dout(10) << "rollback_uncommitted_fragments: " << uncommitted_fragments
.size() << " pending" << dendl
;
11523 for (map
<dirfrag_t
, ufragment
>::iterator p
= uncommitted_fragments
.begin();
11524 p
!= uncommitted_fragments
.end();
11526 ufragment
&uf
= p
->second
;
11527 CInode
*diri
= get_inode(p
->first
.ino
);
11530 if (uf
.committed
) {
11532 diri
->get_dirfrags_under(p
->first
.frag
, frags
);
11533 for (list
<CDir
*>::iterator q
= frags
.begin(); q
!= frags
.end(); ++q
) {
11535 dir
->auth_pin(this);
11536 dir
->state_set(CDir::STATE_FRAGMENTING
);
11538 _fragment_committed(p
->first
, frags
);
11542 dout(10) << " rolling back " << p
->first
<< " refragment by " << uf
.bits
<< " bits" << dendl
;
11544 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
11545 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_ROLLBACK
, p
->first
, uf
.bits
);
11546 mds
->mdlog
->start_entry(le
);
11547 bool diri_auth
= (diri
->authority() != CDIR_AUTH_UNDEF
);
11549 list
<frag_t
> old_frags
;
11550 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, old_frags
);
11552 list
<CDir
*> resultfrags
;
11553 if (uf
.old_frags
.empty()) {
11554 // created by old format EFragment
11555 list
<MDSInternalContextBase
*> waiters
;
11556 adjust_dir_fragments(diri
, p
->first
.frag
, -uf
.bits
, resultfrags
, waiters
, true);
11558 bufferlist::iterator bp
= uf
.rollback
.begin();
11559 for (list
<frag_t
>::iterator q
= uf
.old_frags
.begin(); q
!= uf
.old_frags
.end(); ++q
) {
11560 CDir
*dir
= force_dir_fragment(diri
, *q
);
11561 resultfrags
.push_back(dir
);
11563 dirfrag_rollback rollback
;
11564 ::decode(rollback
, bp
);
11566 dir
->set_version(rollback
.fnode
.version
);
11567 dir
->fnode
= rollback
.fnode
;
11569 dir
->_mark_dirty(ls
);
11571 if (!(dir
->fnode
.rstat
== dir
->fnode
.accounted_rstat
)) {
11572 dout(10) << " dirty nestinfo on " << *dir
<< dendl
;
11573 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->nestlock
);
11574 ls
->dirty_dirfrag_nest
.push_back(&dir
->inode
->item_dirty_dirfrag_nest
);
11576 if (!(dir
->fnode
.fragstat
== dir
->fnode
.accounted_fragstat
)) {
11577 dout(10) << " dirty fragstat on " << *dir
<< dendl
;
11578 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->filelock
);
11579 ls
->dirty_dirfrag_dir
.push_back(&dir
->inode
->item_dirty_dirfrag_dir
);
11582 le
->add_orig_frag(dir
->get_frag());
11583 le
->metablob
.add_dir_context(dir
);
11585 le
->metablob
.add_fragmented_dir(dir
, true, false);
11587 dout(10) << " dirty dirfragtree on " << *dir
<< dendl
;
11588 dir
->state_set(CDir::STATE_DIRTYDFT
);
11589 le
->metablob
.add_fragmented_dir(dir
, true, true);
11595 diri
->project_inode()->version
= diri
->pre_dirty();
11596 diri
->pop_and_dirty_projected_inode(ls
); // hacky
11597 le
->metablob
.add_primary_dentry(diri
->get_projected_parent_dn(), diri
, true);
11599 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11600 ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11603 if (g_conf
->mds_debug_frag
)
11604 diri
->verify_dirfrags();
11606 for (list
<frag_t
>::iterator q
= old_frags
.begin(); q
!= old_frags
.end(); ++q
)
11607 assert(!diri
->dirfragtree
.is_leaf(*q
));
11609 for (list
<CDir
*>::iterator q
= resultfrags
.begin(); q
!= resultfrags
.end(); ++q
) {
11611 dir
->auth_pin(this);
11612 dir
->state_set(CDir::STATE_FRAGMENTING
);
11615 mds
->mdlog
->submit_entry(le
);
11617 uf
.old_frags
.swap(old_frags
);
11618 _fragment_committed(p
->first
, resultfrags
);
11622 void MDCache::force_readonly()
11627 dout(1) << "force file system read-only" << dendl
;
11628 mds
->clog
->warn() << "force file system read-only";
11632 mds
->server
->force_clients_readonly();
11634 // revoke write caps
11635 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
11636 p
!= inode_map
.end();
11638 CInode
*in
= p
->second
;
11640 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
);
11643 mds
->mdlog
->flush();
11647 // ==============================================================
11650 void MDCache::show_subtrees(int dbl
)
11652 if (g_conf
->mds_thrash_exports
)
11655 //dout(10) << "show_subtrees" << dendl;
11657 if (!g_conf
->subsys
.should_gather(ceph_subsys_mds
, dbl
))
11658 return; // i won't print anything.
11660 if (subtrees
.empty()) {
11661 dout(dbl
) << "show_subtrees - no subtrees" << dendl
;
11666 list
<CDir
*> basefrags
;
11667 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
11668 p
!= base_inodes
.end();
11670 (*p
)->get_dirfrags(basefrags
);
11671 //dout(15) << "show_subtrees, base dirfrags " << basefrags << dendl;
11672 dout(15) << "show_subtrees" << dendl
;
11675 list
<pair
<CDir
*,int> > q
;
11680 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11681 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11683 set
<CDir
*> subtrees_seen
;
11686 while (!q
.empty()) {
11687 CDir
*dir
= q
.front().first
;
11688 int d
= q
.front().second
;
11691 if (subtrees
.count(dir
) == 0) continue;
11693 subtrees_seen
.insert(dir
);
11695 if (d
> depth
) depth
= d
;
11698 //dout(25) << "saw depth " << d << " " << *dir << dendl;
11699 if (seen
.count(dir
)) dout(0) << "aah, already seen " << *dir
<< dendl
;
11700 assert(seen
.count(dir
) == 0);
11704 if (!subtrees
[dir
].empty()) {
11705 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11706 p
!= subtrees
[dir
].end();
11708 //dout(25) << " saw sub " << **p << dendl;
11709 q
.push_front(pair
<CDir
*,int>(*p
, d
+1));
11716 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11717 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11719 while (!q
.empty()) {
11720 CDir
*dir
= q
.front().first
;
11721 int d
= q
.front().second
;
11724 if (subtrees
.count(dir
) == 0) continue;
11727 while ((unsigned)d
< indent
.size())
11731 string pad
= "______________________________________";
11732 pad
.resize(depth
*2+1-indent
.size());
11733 if (!subtrees
[dir
].empty())
11734 pad
[0] = '.'; // parent
11738 if (dir
->is_auth())
11744 if (dir
->get_dir_auth().second
== CDIR_AUTH_UNKNOWN
)
11745 snprintf(s
, sizeof(s
), "%2d ", int(dir
->get_dir_auth().first
));
11747 snprintf(s
, sizeof(s
), "%2d,%2d", int(dir
->get_dir_auth().first
), int(dir
->get_dir_auth().second
));
11750 dout(dbl
) << indent
<< "|_" << pad
<< s
<< " " << auth
<< *dir
<< dendl
;
11752 if (dir
->ino() == MDS_INO_ROOT
)
11753 assert(dir
->inode
== root
);
11754 if (dir
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
11755 assert(dir
->inode
== myin
);
11756 if (dir
->inode
->is_stray() && (MDS_INO_STRAY_OWNER(dir
->ino()) == mds
->get_nodeid()))
11757 assert(strays
[MDS_INO_STRAY_INDEX(dir
->ino())] == dir
->inode
);
11760 if (!subtrees
[dir
].empty()) {
11761 // more at my level?
11762 if (!q
.empty() && q
.front().second
== d
)
11767 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11768 p
!= subtrees
[dir
].end();
11770 q
.push_front(pair
<CDir
*,int>(*p
, d
+2));
11774 // verify there isn't stray crap in subtree map
11776 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
11777 p
!= subtrees
.end();
11779 if (subtrees_seen
.count(p
->first
)) continue;
11780 dout(10) << "*** stray/lost entry in subtree map: " << *p
->first
<< dendl
;
11787 void MDCache::show_cache()
11789 dout(7) << "show_cache" << dendl
;
11791 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator it
= inode_map
.begin();
11792 it
!= inode_map
.end();
11795 if (!it
->second
->parent
)
11796 dout(7) << " unlinked " << *it
->second
<< dendl
;
11800 it
->second
->get_dirfrags(dfs
);
11801 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11803 dout(7) << " dirfrag " << *dir
<< dendl
;
11805 for (CDir::map_t::iterator p
= dir
->items
.begin();
11806 p
!= dir
->items
.end();
11808 CDentry
*dn
= p
->second
;
11809 dout(7) << " dentry " << *dn
<< dendl
;
11810 CDentry::linkage_t
*dnl
= dn
->get_linkage();
11811 if (dnl
->is_primary() && dnl
->get_inode())
11812 dout(7) << " inode " << *dnl
->get_inode() << dendl
;
11818 int MDCache::dump_cache(std::string
const &file_name
)
11820 return dump_cache(file_name
.c_str(), NULL
);
11823 int MDCache::dump_cache(Formatter
*f
)
11825 return dump_cache(NULL
, f
);
11828 int MDCache::dump_cache(const string
& dump_root
, int depth
, Formatter
*f
)
11830 return dump_cache(NULL
, f
, dump_root
, depth
);
11834 * Dump the metadata cache, either to a Formatter, if
11835 * provided, else to a plain text file.
11837 int MDCache::dump_cache(const char *fn
, Formatter
*f
,
11838 const string
& dump_root
, int depth
)
11844 f
->open_array_section("inodes");
11848 snprintf(deffn
, sizeof(deffn
), "cachedump.%d.mds%d", (int)mds
->mdsmap
->get_epoch(), int(mds
->get_nodeid()));
11852 dout(1) << "dump_cache to " << fn
<< dendl
;
11854 fd
= ::open(fn
, O_WRONLY
|O_CREAT
|O_EXCL
, 0600);
11856 derr
<< "failed to open " << fn
<< ": " << cpp_strerror(errno
) << dendl
;
11861 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator it
= inode_map
.begin();
11862 it
!= inode_map
.end();
11864 CInode
*in
= it
->second
;
11866 if (!dump_root
.empty()) {
11871 in
->make_path_string(ipath
);
11873 if (dump_root
.length() > ipath
.length() ||
11874 !equal(dump_root
.begin(), dump_root
.end(), ipath
.begin()))
11878 count(ipath
.begin() + dump_root
.length(), ipath
.end(), '/') > depth
)
11883 f
->open_object_section("inode");
11887 ss
<< *in
<< std::endl
;
11888 std::string s
= ss
.str();
11889 r
= safe_write(fd
, s
.c_str(), s
.length());
11896 in
->get_dirfrags(dfs
);
11898 f
->open_array_section("dirfrags");
11900 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11903 f
->open_object_section("dir");
11907 tt
<< " " << *dir
<< std::endl
;
11908 string t
= tt
.str();
11909 r
= safe_write(fd
, t
.c_str(), t
.length());
11916 f
->open_array_section("dentries");
11918 for (CDir::map_t::iterator q
= dir
->items
.begin();
11919 q
!= dir
->items
.end();
11921 CDentry
*dn
= q
->second
;
11923 f
->open_object_section("dentry");
11925 f
->close_section();
11928 uu
<< " " << *dn
<< std::endl
;
11929 string u
= uu
.str();
11930 r
= safe_write(fd
, u
.c_str(), u
.length());
11937 f
->close_section(); //dentries
11939 dir
->check_rstats();
11941 f
->close_section(); //dir
11945 f
->close_section(); // dirfrags
11949 f
->close_section(); // inode
11955 f
->close_section(); // inodes
11964 C_MDS_RetryRequest::C_MDS_RetryRequest(MDCache
*c
, MDRequestRef
& r
)
11965 : MDSInternalContext(c
->mds
), cache(c
), mdr(r
)
11968 void C_MDS_RetryRequest::finish(int r
)
11971 cache
->dispatch_request(mdr
);
11975 class C_MDS_EnqueueScrub
: public Context
11977 Formatter
*formatter
;
11978 Context
*on_finish
;
11980 ScrubHeaderRef header
;
11981 C_MDS_EnqueueScrub(Formatter
*f
, Context
*fin
) :
11982 formatter(f
), on_finish(fin
), header(nullptr) {}
11984 Context
*take_finisher() {
11985 Context
*fin
= on_finish
;
11990 void finish(int r
) override
{
11991 if (r
< 0) { // we failed the lookup or something; dump ourselves
11992 formatter
->open_object_section("results");
11993 formatter
->dump_int("return_code", r
);
11994 formatter
->close_section(); // results
11997 on_finish
->complete(r
);
12001 void MDCache::enqueue_scrub(
12002 const string
& path
,
12003 const std::string
&tag
,
12004 bool force
, bool recursive
, bool repair
,
12005 Formatter
*f
, Context
*fin
)
12007 dout(10) << __func__
<< path
<< dendl
;
12008 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_ENQUEUE_SCRUB
);
12009 filepath
fp(path
.c_str());
12010 mdr
->set_filepath(fp
);
12012 C_MDS_EnqueueScrub
*cs
= new C_MDS_EnqueueScrub(f
, fin
);
12013 cs
->header
= std::make_shared
<ScrubHeader
>(
12014 tag
, force
, recursive
, repair
, f
);
12016 mdr
->internal_op_finish
= cs
;
12017 enqueue_scrub_work(mdr
);
12020 void MDCache::enqueue_scrub_work(MDRequestRef
& mdr
)
12022 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12023 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
12027 // TODO: Remove this restriction
12028 assert(in
->is_auth());
12030 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
12034 C_MDS_EnqueueScrub
*cs
= static_cast<C_MDS_EnqueueScrub
*>(mdr
->internal_op_finish
);
12035 ScrubHeaderRef
&header
= cs
->header
;
12037 // Cannot scrub same dentry twice at same time
12038 if (in
->scrub_infop
&& in
->scrub_infop
->scrub_in_progress
) {
12039 mds
->server
->respond_to_request(mdr
, -EBUSY
);
12045 header
->set_origin(in
);
12047 // only set completion context for non-recursive scrub, because we don't
12048 // want to block asok caller on long running scrub
12049 if (!header
->get_recursive()) {
12050 Context
*fin
= cs
->take_finisher();
12051 mds
->scrubstack
->enqueue_inode_top(in
, header
,
12052 new MDSInternalContextWrapper(mds
, fin
));
12054 mds
->scrubstack
->enqueue_inode_bottom(in
, header
, NULL
);
12056 mds
->server
->respond_to_request(mdr
, 0);
12060 struct C_MDC_RepairDirfragStats
: public MDCacheLogContext
{
12062 C_MDC_RepairDirfragStats(MDCache
*c
, MDRequestRef
& m
) :
12063 MDCacheLogContext(c
), mdr(m
) {}
12064 void finish(int r
) override
{
12066 get_mds()->server
->respond_to_request(mdr
, r
);
12070 void MDCache::repair_dirfrag_stats(CDir
*dir
)
12072 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_FRAGSTATS
);
12074 mdr
->internal_op_private
= dir
;
12075 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12076 repair_dirfrag_stats_work(mdr
);
12079 void MDCache::repair_dirfrag_stats_work(MDRequestRef
& mdr
)
12081 CDir
*dir
= static_cast<CDir
*>(mdr
->internal_op_private
);
12082 dout(10) << __func__
<< " " << *dir
<< dendl
;
12084 if (!dir
->is_auth()) {
12085 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12089 if (!mdr
->is_auth_pinned(dir
) && !dir
->can_auth_pin()) {
12090 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(this, mdr
));
12092 mds
->locker
->drop_locks(mdr
.get());
12093 mdr
->drop_local_auth_pins();
12094 if (!mdr
->remote_auth_pins
.empty())
12095 mds
->locker
->notify_freeze_waiter(dir
);
12099 mdr
->auth_pin(dir
);
12101 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12102 CInode
*diri
= dir
->inode
;
12103 rdlocks
.insert(&diri
->dirfragtreelock
);
12104 wrlocks
.insert(&diri
->nestlock
);
12105 wrlocks
.insert(&diri
->filelock
);
12106 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12109 if (!dir
->is_complete()) {
12110 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12114 frag_info_t frag_info
;
12115 nest_info_t nest_info
;
12116 for (CDir::map_t::iterator it
= dir
->begin(); it
!= dir
->end(); ++it
) {
12117 CDentry
*dn
= it
->second
;
12118 if (dn
->last
!= CEPH_NOSNAP
)
12120 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
12121 if (dnl
->is_primary()) {
12122 CInode
*in
= dnl
->get_inode();
12123 nest_info
.add(in
->get_projected_inode()->accounted_rstat
);
12125 frag_info
.nsubdirs
++;
12127 frag_info
.nfiles
++;
12128 } else if (dnl
->is_remote())
12129 frag_info
.nfiles
++;
12132 fnode_t
*pf
= dir
->get_projected_fnode();
12133 bool good_fragstat
= frag_info
.same_sums(pf
->fragstat
);
12134 bool good_rstat
= nest_info
.same_sums(pf
->rstat
);
12135 if (good_fragstat
&& good_rstat
) {
12136 dout(10) << __func__
<< " no corruption found" << dendl
;
12137 mds
->server
->respond_to_request(mdr
, 0);
12141 pf
= dir
->project_fnode();
12142 pf
->version
= dir
->pre_dirty();
12143 mdr
->add_projected_fnode(dir
);
12145 mdr
->ls
= mds
->mdlog
->get_current_segment();
12146 EUpdate
*le
= new EUpdate(mds
->mdlog
, "repair_dirfrag");
12147 mds
->mdlog
->start_entry(le
);
12149 if (!good_fragstat
) {
12150 if (pf
->fragstat
.mtime
> frag_info
.mtime
)
12151 frag_info
.mtime
= pf
->fragstat
.mtime
;
12152 if (pf
->fragstat
.change_attr
> frag_info
.change_attr
)
12153 frag_info
.change_attr
= pf
->fragstat
.change_attr
;
12154 pf
->fragstat
= frag_info
;
12155 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12156 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12157 mdr
->add_updated_lock(&diri
->filelock
);
12161 if (pf
->rstat
.rctime
> nest_info
.rctime
)
12162 nest_info
.rctime
= pf
->rstat
.rctime
;
12163 pf
->rstat
= nest_info
;
12164 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12165 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12166 mdr
->add_updated_lock(&diri
->nestlock
);
12169 le
->metablob
.add_dir_context(dir
);
12170 le
->metablob
.add_dir(dir
, true);
12172 mds
->mdlog
->submit_entry(le
, new C_MDC_RepairDirfragStats(this, mdr
));
12175 void MDCache::repair_inode_stats(CInode
*diri
)
12177 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_INODESTATS
);
12179 mdr
->internal_op_private
= diri
;
12180 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12181 repair_inode_stats_work(mdr
);
12184 void MDCache::repair_inode_stats_work(MDRequestRef
& mdr
)
12186 CInode
*diri
= static_cast<CInode
*>(mdr
->internal_op_private
);
12187 dout(10) << __func__
<< " " << *diri
<< dendl
;
12189 if (!diri
->is_auth()) {
12190 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12193 if (!diri
->is_dir()) {
12194 mds
->server
->respond_to_request(mdr
, -ENOTDIR
);
12198 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12199 std::list
<frag_t
> frags
;
12201 if (mdr
->ls
) // already marked filelock/nestlock dirty ?
12204 rdlocks
.insert(&diri
->dirfragtreelock
);
12205 wrlocks
.insert(&diri
->nestlock
);
12206 wrlocks
.insert(&diri
->filelock
);
12207 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12210 // Fetch all dirfrags and mark filelock/nestlock dirty. This will tirgger
12211 // the scatter-gather process, which will fix any fragstat/rstat errors.
12212 diri
->dirfragtree
.get_leaves(frags
);
12213 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12214 CDir
*dir
= diri
->get_dirfrag(*p
);
12216 assert(mdr
->is_auth_pinned(diri
));
12217 dir
= diri
->get_or_open_dirfrag(this, *p
);
12219 if (dir
->get_version() == 0) {
12220 assert(dir
->is_auth());
12221 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12226 diri
->state_set(CInode::STATE_REPAIRSTATS
);
12227 mdr
->ls
= mds
->mdlog
->get_current_segment();
12228 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12229 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12230 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12231 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12233 mds
->locker
->drop_locks(mdr
.get());
12236 // force the scatter-gather process
12237 rdlocks
.insert(&diri
->dirfragtreelock
);
12238 rdlocks
.insert(&diri
->nestlock
);
12239 rdlocks
.insert(&diri
->filelock
);
12241 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12244 diri
->state_clear(CInode::STATE_REPAIRSTATS
);
12246 frag_info_t dir_info
;
12247 nest_info_t nest_info
;
12248 nest_info
.rsubdirs
++; // it gets one to account for self
12250 diri
->dirfragtree
.get_leaves(frags
);
12251 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12252 CDir
*dir
= diri
->get_dirfrag(*p
);
12254 assert(dir
->get_version() > 0);
12255 dir_info
.add(dir
->fnode
.accounted_fragstat
);
12256 nest_info
.add(dir
->fnode
.accounted_rstat
);
12259 if (!dir_info
.same_sums(diri
->inode
.dirstat
) ||
12260 !nest_info
.same_sums(diri
->inode
.rstat
)) {
12261 dout(10) << __func__
<< " failed to fix fragstat/rstat on "
12265 mds
->server
->respond_to_request(mdr
, 0);
12268 void MDCache::flush_dentry(const string
& path
, Context
*fin
)
12270 if (is_readonly()) {
12271 dout(10) << __func__
<< ": read-only FS" << dendl
;
12272 fin
->complete(-EROFS
);
12275 dout(10) << "flush_dentry " << path
<< dendl
;
12276 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FLUSH
);
12277 filepath
fp(path
.c_str());
12278 mdr
->set_filepath(fp
);
12279 mdr
->internal_op_finish
= fin
;
12280 flush_dentry_work(mdr
);
12283 class C_FinishIOMDR
: public MDSInternalContextBase
{
12287 MDSRank
*get_mds() override
{ return mds
; }
12289 C_FinishIOMDR(MDSRank
*mds_
, MDRequestRef
& mdr_
) : mds(mds_
), mdr(mdr_
) {}
12290 void finish(int r
) override
{ mds
->server
->respond_to_request(mdr
, r
); }
12293 void MDCache::flush_dentry_work(MDRequestRef
& mdr
)
12295 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12296 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
12300 // TODO: Is this necessary? Fix it if so
12301 assert(in
->is_auth());
12302 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
12305 in
->flush(new C_FinishIOMDR(mds
, mdr
));
12310 * Initialize performance counters with global perfcounter
12313 void MDCache::register_perfcounters()
12315 PerfCountersBuilder
pcb(g_ceph_context
,
12316 "mds_cache", l_mdc_first
, l_mdc_last
);
12318 /* Stray/purge statistics */
12319 pcb
.add_u64(l_mdc_num_strays
, "num_strays",
12320 "Stray dentries", "stry");
12321 pcb
.add_u64(l_mdc_num_strays_delayed
, "num_strays_delayed", "Stray dentries delayed");
12322 pcb
.add_u64(l_mdc_num_strays_enqueuing
, "num_strays_enqueuing", "Stray dentries enqueuing for purge");
12324 pcb
.add_u64_counter(l_mdc_strays_created
, "strays_created", "Stray dentries created");
12325 pcb
.add_u64_counter(l_mdc_strays_enqueued
, "strays_enqueued",
12326 "Stray dentries enqueued for purge");
12327 pcb
.add_u64_counter(l_mdc_strays_reintegrated
, "strays_reintegrated", "Stray dentries reintegrated");
12328 pcb
.add_u64_counter(l_mdc_strays_migrated
, "strays_migrated", "Stray dentries migrated");
12331 /* Recovery queue statistics */
12332 pcb
.add_u64(l_mdc_num_recovering_processing
, "num_recovering_processing", "Files currently being recovered");
12333 pcb
.add_u64(l_mdc_num_recovering_enqueued
, "num_recovering_enqueued",
12334 "Files waiting for recovery", "recy");
12335 pcb
.add_u64(l_mdc_num_recovering_prioritized
, "num_recovering_prioritized", "Files waiting for recovery with elevated priority");
12336 pcb
.add_u64_counter(l_mdc_recovery_started
, "recovery_started", "File recoveries started");
12337 pcb
.add_u64_counter(l_mdc_recovery_completed
, "recovery_completed",
12338 "File recoveries completed", "recd");
12340 logger
.reset(pcb
.create_perf_counters());
12341 g_ceph_context
->get_perfcounters_collection()->add(logger
.get());
12342 recovery_queue
.set_logger(logger
.get());
12343 stray_manager
.set_logger(logger
.get());
12346 void MDCache::activate_stray_manager()
12349 stray_manager
.activate();
12352 new MDSInternalContextWrapper(mds
,
12353 new FunctionContext([this](int r
){
12354 stray_manager
.activate();
12362 * Call this when putting references to an inode/dentry or
12363 * when attempting to trim it.
12365 * If this inode is no longer linked by anyone, and this MDS
12366 * rank holds the primary dentry, and that dentry is in a stray
12367 * directory, then give up the dentry to the StrayManager, never
12368 * to be seen again by MDCache.
12370 * @param delay if true, then purgeable inodes are stashed til
12371 * the next trim(), rather than being purged right
12374 void MDCache::maybe_eval_stray(CInode
*in
, bool delay
) {
12375 if (in
->inode
.nlink
> 0 || in
->is_base() || is_readonly() ||
12376 mds
->get_state() <= MDSMap::STATE_REJOIN
)
12379 CDentry
*dn
= in
->get_projected_parent_dn();
12381 if (dn
->state_test(CDentry::STATE_PURGING
)) {
12382 /* We have already entered the purging process, no need
12383 * to re-evaluate me ! */
12387 if (dn
->get_projected_linkage()->is_primary() &&
12388 dn
->get_dir()->get_inode()->is_stray()) {
12389 stray_manager
.eval_stray(dn
, delay
);
12393 void MDCache::clear_dirty_bits_for_stray(CInode
* diri
) {
12394 dout(10) << __func__
<< " " << *diri
<< dendl
;
12395 assert(diri
->get_projected_parent_dir()->inode
->is_stray());
12397 diri
->get_dirfrags(ls
);
12398 for (auto p
: ls
) {
12399 if (p
->is_auth() && !(p
->is_frozen() || p
->is_freezing()))
12400 p
->try_remove_dentries_for_stray();
12402 if (!diri
->snaprealm
) {
12403 if (diri
->is_auth())
12404 diri
->clear_dirty_rstat();
12405 diri
->clear_scatter_dirty();