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 decayrate
.set_halflife(g_conf
->mds_decay_halflife
);
210 did_shutdown_log_cap
= false;
216 g_ceph_context
->get_perfcounters_collection()->remove(logger
.get());
222 void MDCache::log_stat()
224 mds
->logger
->set(l_mds_inode_max
, g_conf
->mds_cache_size
);
225 mds
->logger
->set(l_mds_inodes
, lru
.lru_get_size());
226 mds
->logger
->set(l_mds_inodes_pinned
, lru
.lru_get_num_pinned());
227 mds
->logger
->set(l_mds_inodes_top
, lru
.lru_get_top());
228 mds
->logger
->set(l_mds_inodes_bottom
, lru
.lru_get_bot());
229 mds
->logger
->set(l_mds_inodes_pin_tail
, lru
.lru_get_pintail());
230 mds
->logger
->set(l_mds_inodes_with_caps
, num_inodes_with_caps
);
231 mds
->logger
->set(l_mds_caps
, Capability::count());
237 bool MDCache::shutdown()
239 if (lru
.lru_get_size() > 0) {
240 dout(7) << "WARNING: mdcache shutdown with non-empty cache" << dendl
;
249 // ====================================================================
250 // some inode functions
252 void MDCache::add_inode(CInode
*in
)
254 // add to lru, inode map
255 assert(inode_map
.count(in
->vino()) == 0); // should be no dup inos!
256 inode_map
[ in
->vino() ] = in
;
258 if (in
->ino() < MDS_INO_SYSTEM_BASE
) {
259 if (in
->ino() == MDS_INO_ROOT
)
261 else if (in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
263 else if (in
->is_stray()) {
264 if (MDS_INO_STRAY_OWNER(in
->ino()) == mds
->get_nodeid()) {
265 strays
[MDS_INO_STRAY_INDEX(in
->ino())] = in
;
269 base_inodes
.insert(in
);
272 if (CInode::count() >
273 g_conf
->mds_cache_size
* g_conf
->mds_health_cache_threshold
) {
274 exceeded_size_limit
= true;
278 void MDCache::remove_inode(CInode
*o
)
280 dout(14) << "remove_inode " << *o
<< dendl
;
282 if (o
->get_parent_dn()) {
283 // FIXME: multiple parents?
284 CDentry
*dn
= o
->get_parent_dn();
285 assert(!dn
->is_dirty());
286 dn
->dir
->unlink_inode(dn
); // leave dentry ... FIXME?
291 if (o
->is_dirty_parent())
292 o
->clear_dirty_parent();
294 o
->clear_scatter_dirty();
296 o
->item_open_file
.remove_myself();
298 export_pin_queue
.erase(o
);
300 // remove from inode map
301 inode_map
.erase(o
->vino());
303 if (o
->ino() < MDS_INO_SYSTEM_BASE
) {
304 if (o
== root
) root
= 0;
305 if (o
== myin
) myin
= 0;
307 if (MDS_INO_STRAY_OWNER(o
->ino()) == mds
->get_nodeid()) {
308 strays
[MDS_INO_STRAY_INDEX(o
->ino())] = 0;
312 base_inodes
.erase(o
);
316 assert(o
->get_num_ref() == 0);
320 file_layout_t
MDCache::gen_default_file_layout(const MDSMap
&mdsmap
)
322 file_layout_t result
= file_layout_t::get_default();
323 result
.pool_id
= mdsmap
.get_first_data_pool();
327 file_layout_t
MDCache::gen_default_log_layout(const MDSMap
&mdsmap
)
329 file_layout_t result
= file_layout_t::get_default();
330 result
.pool_id
= mdsmap
.get_metadata_pool();
331 if (g_conf
->mds_log_segment_size
> 0) {
332 result
.object_size
= g_conf
->mds_log_segment_size
;
333 result
.stripe_unit
= g_conf
->mds_log_segment_size
;
338 void MDCache::init_layouts()
340 default_file_layout
= gen_default_file_layout(*(mds
->mdsmap
));
341 default_log_layout
= gen_default_log_layout(*(mds
->mdsmap
));
344 void MDCache::create_unlinked_system_inode(CInode
*in
, inodeno_t ino
,
348 in
->inode
.version
= 1;
349 in
->inode
.xattr_version
= 1;
350 in
->inode
.mode
= 0500 | mode
;
354 in
->inode
.btime
= ceph_clock_now();
356 in
->inode
.truncate_size
= -1ull;
357 in
->inode
.change_attr
= 0;
358 in
->inode
.export_pin
= MDS_RANK_NONE
;
360 memset(&in
->inode
.dir_layout
, 0, sizeof(in
->inode
.dir_layout
));
361 if (in
->inode
.is_dir()) {
362 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
363 ++in
->inode
.rstat
.rsubdirs
;
365 in
->inode
.layout
= default_file_layout
;
366 ++in
->inode
.rstat
.rfiles
;
368 in
->inode
.accounted_rstat
= in
->inode
.rstat
;
372 in
->inode_auth
= mds_authority_t(mds
->get_nodeid(), CDIR_AUTH_UNKNOWN
);
374 in
->inode_auth
= mds_authority_t(mds_rank_t(in
->ino() - MDS_INO_MDSDIR_OFFSET
), CDIR_AUTH_UNKNOWN
);
375 in
->open_snaprealm(); // empty snaprealm
376 assert(!in
->snaprealm
->parent
); // created its own
377 in
->snaprealm
->srnode
.seq
= 1;
381 CInode
*MDCache::create_system_inode(inodeno_t ino
, int mode
)
383 dout(0) << "creating system inode with ino:" << ino
<< dendl
;
384 CInode
*in
= new CInode(this);
385 create_unlinked_system_inode(in
, ino
, mode
);
390 CInode
*MDCache::create_root_inode()
392 CInode
*i
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755);
393 i
->inode
.uid
= g_conf
->mds_root_ino_uid
;
394 i
->inode
.gid
= g_conf
->mds_root_ino_gid
;
395 i
->inode
.layout
= default_file_layout
;
396 i
->inode
.layout
.pool_id
= mds
->mdsmap
->get_first_data_pool();
400 void MDCache::create_empty_hierarchy(MDSGather
*gather
)
403 CInode
*root
= create_root_inode();
405 // force empty root dir
406 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
407 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
408 rootdir
->dir_rep
= CDir::REP_ALL
; //NONE;
410 rootdir
->fnode
.accounted_fragstat
= rootdir
->fnode
.fragstat
;
411 rootdir
->fnode
.accounted_rstat
= rootdir
->fnode
.rstat
;
413 root
->inode
.dirstat
= rootdir
->fnode
.fragstat
;
414 root
->inode
.rstat
= rootdir
->fnode
.rstat
;
415 ++root
->inode
.rstat
.rsubdirs
;
416 root
->inode
.accounted_rstat
= root
->inode
.rstat
;
418 rootdir
->mark_complete();
419 rootdir
->mark_dirty(rootdir
->pre_dirty(), mds
->mdlog
->get_current_segment());
420 rootdir
->commit(0, gather
->new_sub());
422 root
->store(gather
->new_sub());
425 void MDCache::create_mydir_hierarchy(MDSGather
*gather
)
428 CInode
*my
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
);
430 CDir
*mydir
= my
->get_or_open_dirfrag(this, frag_t());
431 adjust_subtree_auth(mydir
, mds
->get_nodeid());
433 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
436 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
437 CInode
*stray
= create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
);
438 CDir
*straydir
= stray
->get_or_open_dirfrag(this, frag_t());
440 name
<< "stray" << i
;
441 CDentry
*sdn
= mydir
->add_primary_dentry(name
.str(), stray
);
442 sdn
->_mark_dirty(mds
->mdlog
->get_current_segment());
444 stray
->inode
.dirstat
= straydir
->fnode
.fragstat
;
446 mydir
->fnode
.rstat
.add(stray
->inode
.rstat
);
447 mydir
->fnode
.fragstat
.nsubdirs
++;
449 straydir
->mark_complete();
450 straydir
->mark_dirty(straydir
->pre_dirty(), ls
);
451 straydir
->commit(0, gather
->new_sub());
452 stray
->_mark_dirty_parent(ls
, true);
453 stray
->store_backtrace(gather
->new_sub());
456 mydir
->fnode
.accounted_fragstat
= mydir
->fnode
.fragstat
;
457 mydir
->fnode
.accounted_rstat
= mydir
->fnode
.rstat
;
459 myin
->inode
.dirstat
= mydir
->fnode
.fragstat
;
460 myin
->inode
.rstat
= mydir
->fnode
.rstat
;
461 ++myin
->inode
.rstat
.rsubdirs
;
462 myin
->inode
.accounted_rstat
= myin
->inode
.rstat
;
464 mydir
->mark_complete();
465 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
466 mydir
->commit(0, gather
->new_sub());
468 myin
->store(gather
->new_sub());
471 struct C_MDC_CreateSystemFile
: public MDCacheLogContext
{
475 MDSInternalContextBase
*fin
;
476 C_MDC_CreateSystemFile(MDCache
*c
, MutationRef
& mu
, CDentry
*d
, version_t v
, MDSInternalContextBase
*f
) :
477 MDCacheLogContext(c
), mut(mu
), dn(d
), dpv(v
), fin(f
) {}
478 void finish(int r
) override
{
479 mdcache
->_create_system_file_finish(mut
, dn
, dpv
, fin
);
483 void MDCache::_create_system_file(CDir
*dir
, const char *name
, CInode
*in
, MDSInternalContextBase
*fin
)
485 dout(10) << "_create_system_file " << name
<< " in " << *dir
<< dendl
;
486 CDentry
*dn
= dir
->add_null_dentry(name
);
488 dn
->push_projected_linkage(in
);
489 version_t dpv
= dn
->pre_dirty();
492 if (in
->inode
.is_dir()) {
493 in
->inode
.rstat
.rsubdirs
= 1;
495 mdir
= in
->get_or_open_dirfrag(this, frag_t());
496 mdir
->mark_complete();
499 in
->inode
.rstat
.rfiles
= 1;
500 in
->inode
.version
= dn
->pre_dirty();
502 SnapRealm
*realm
= dir
->get_inode()->find_snaprealm();
503 dn
->first
= in
->first
= realm
->get_newest_seq() + 1;
505 MutationRef
mut(new MutationImpl());
507 // force some locks. hacky.
508 mds
->locker
->wrlock_force(&dir
->inode
->filelock
, mut
);
509 mds
->locker
->wrlock_force(&dir
->inode
->nestlock
, mut
);
511 mut
->ls
= mds
->mdlog
->get_current_segment();
512 EUpdate
*le
= new EUpdate(mds
->mdlog
, "create system file");
513 mds
->mdlog
->start_entry(le
);
515 if (!in
->is_mdsdir()) {
516 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
517 le
->metablob
.add_primary_dentry(dn
, in
, true);
519 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_DIR
, 1);
520 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
521 dn
->push_projected_linkage(in
->ino(), in
->d_type());
522 le
->metablob
.add_remote_dentry(dn
, true, in
->ino(), in
->d_type());
523 le
->metablob
.add_root(true, in
);
526 le
->metablob
.add_new_dir(mdir
); // dirty AND complete AND new
528 mds
->mdlog
->submit_entry(le
, new C_MDC_CreateSystemFile(this, mut
, dn
, dpv
, fin
));
532 void MDCache::_create_system_file_finish(MutationRef
& mut
, CDentry
*dn
, version_t dpv
, MDSInternalContextBase
*fin
)
534 dout(10) << "_create_system_file_finish " << *dn
<< dendl
;
536 dn
->pop_projected_linkage();
537 dn
->mark_dirty(dpv
, mut
->ls
);
539 CInode
*in
= dn
->get_linkage()->get_inode();
541 in
->mark_dirty(in
->inode
.version
+ 1, mut
->ls
);
543 if (in
->inode
.is_dir()) {
544 CDir
*dir
= in
->get_dirfrag(frag_t());
546 dir
->mark_dirty(1, mut
->ls
);
547 dir
->mark_new(mut
->ls
);
551 mds
->locker
->drop_locks(mut
.get());
556 //if (dir && MDS_INO_IS_MDSDIR(in->ino()))
557 //migrator->export_dir(dir, (int)in->ino() - MDS_INO_MDSDIR_OFFSET);
562 struct C_MDS_RetryOpenRoot
: public MDSInternalContext
{
564 explicit C_MDS_RetryOpenRoot(MDCache
*c
) : MDSInternalContext(c
->mds
), cache(c
) {}
565 void finish(int r
) override
{
567 // If we can't open root, something disastrous has happened: mark
568 // this rank damaged for operator intervention. Note that
569 // it is not okay to call suicide() here because we are in
570 // a Finisher callback.
571 cache
->mds
->damaged();
572 ceph_abort(); // damaged should never return
579 void MDCache::open_root_inode(MDSInternalContextBase
*c
)
581 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
583 in
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755); // initially inaccurate!
586 discover_base_ino(MDS_INO_ROOT
, c
, mds
->mdsmap
->get_root());
590 void MDCache::open_mydir_inode(MDSInternalContextBase
*c
)
592 MDSGatherBuilder
gather(g_ceph_context
);
594 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
595 in
->fetch(gather
.new_sub());
597 gather
.set_finisher(c
);
601 void MDCache::open_root()
603 dout(10) << "open_root" << dendl
;
606 open_root_inode(new C_MDS_RetryOpenRoot(this));
609 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
610 assert(root
->is_auth());
611 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
613 if (!rootdir
->is_subtree_root())
614 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
615 if (!rootdir
->is_complete()) {
616 rootdir
->fetch(new C_MDS_RetryOpenRoot(this));
620 assert(!root
->is_auth());
621 CDir
*rootdir
= root
->get_dirfrag(frag_t());
623 discover_dir_frag(root
, frag_t(), new C_MDS_RetryOpenRoot(this));
629 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
630 in
->fetch(new C_MDS_RetryOpenRoot(this));
633 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
635 adjust_subtree_auth(mydir
, mds
->get_nodeid());
640 void MDCache::populate_mydir()
643 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
646 dout(10) << "populate_mydir " << *mydir
<< dendl
;
648 if (!mydir
->is_complete()) {
649 mydir
->fetch(new C_MDS_RetryOpenRoot(this));
653 if (mydir
->get_version() == 0 && mydir
->state_test(CDir::STATE_BADFRAG
)) {
654 // A missing dirfrag, we will recreate it. Before that, we must dirty
655 // it before dirtying any of the strays we create within it.
656 mds
->clog
->warn() << "fragment " << mydir
->dirfrag() << " was unreadable, "
658 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
659 mydir
->state_clear(CDir::STATE_BADFRAG
);
660 mydir
->mark_complete();
661 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
664 // open or create stray
665 uint64_t num_strays
= 0;
666 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
668 name
<< "stray" << i
;
669 CDentry
*straydn
= mydir
->lookup(name
.str());
671 // allow for older fs's with stray instead of stray0
672 if (straydn
== NULL
&& i
== 0)
673 straydn
= mydir
->lookup("stray");
675 if (!straydn
|| !straydn
->get_linkage()->get_inode()) {
676 _create_system_file(mydir
, name
.str().c_str(), create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
),
677 new C_MDS_RetryOpenRoot(this));
682 // we make multiple passes through this method; make sure we only pin each stray once.
683 if (!strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
684 strays
[i
]->get(CInode::PIN_STRAY
);
685 strays
[i
]->state_set(CInode::STATE_STRAYPINNED
);
686 strays
[i
]->get_stickydirs();
688 dout(20) << " stray num " << i
<< " is " << *strays
[i
] << dendl
;
692 strays
[i
]->dirfragtree
.get_leaves(ls
);
693 for (list
<frag_t
>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
695 CDir
*dir
= strays
[i
]->get_dirfrag(fg
);
697 dir
= strays
[i
]->get_or_open_dirfrag(this, fg
);
700 // DamageTable applies special handling to strays: it will
701 // have damaged() us out if one is damaged.
702 assert(!dir
->state_test(CDir::STATE_BADFRAG
));
704 if (dir
->get_version() == 0) {
705 dir
->fetch(new C_MDS_RetryOpenRoot(this));
709 if (dir
->get_frag_size() > 0)
710 num_strays
+= dir
->get_frag_size();
714 stray_manager
.set_num_strays(num_strays
);
717 dout(10) << "populate_mydir done" << dendl
;
720 mds
->queue_waiters(waiting_for_open
);
725 void MDCache::open_foreign_mdsdir(inodeno_t ino
, MDSInternalContextBase
*fin
)
727 discover_base_ino(ino
, fin
, mds_rank_t(ino
& (MAX_MDS
-1)));
730 CDir
*MDCache::get_stray_dir(CInode
*in
)
733 in
->name_stray_dentry(straydname
);
735 CInode
*strayi
= get_stray();
737 frag_t fg
= strayi
->pick_dirfrag(straydname
);
738 CDir
*straydir
= strayi
->get_dirfrag(fg
);
743 CDentry
*MDCache::get_or_create_stray_dentry(CInode
*in
)
745 CDir
*straydir
= get_stray_dir(in
);
747 in
->name_stray_dentry(straydname
);
748 CDentry
*straydn
= straydir
->lookup(straydname
);
750 straydn
= straydir
->add_null_dentry(straydname
);
753 assert(straydn
->get_projected_linkage()->is_null());
756 straydn
->state_set(CDentry::STATE_STRAY
);
762 MDSCacheObject
*MDCache::get_object(MDSCacheObjectInfo
&info
)
766 return get_inode(info
.ino
, info
.snapid
);
769 CDir
*dir
= get_dirfrag(info
.dirfrag
);
772 if (info
.dname
.length())
773 return dir
->lookup(info
.dname
, info
.snapid
);
781 // ====================================================================
782 // subtree management
784 void MDCache::list_subtrees(list
<CDir
*>& ls
)
786 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
789 ls
.push_back(p
->first
);
793 * adjust the dir_auth of a subtree.
794 * merge with parent and/or child subtrees, if is it appropriate.
795 * merge can ONLY happen if both parent and child have unambiguous auth.
797 void MDCache::adjust_subtree_auth(CDir
*dir
, mds_authority_t auth
, bool do_eval
)
799 dout(7) << "adjust_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
800 << " on " << *dir
<< dendl
;
802 if (mds
->is_any_replay() || mds
->is_resolve())
808 if (dir
->inode
->is_base()) {
809 root
= dir
; // bootstrap hack.
810 if (subtrees
.count(root
) == 0) {
812 root
->get(CDir::PIN_SUBTREE
);
815 root
= get_subtree_root(dir
); // subtree root
818 assert(subtrees
.count(root
));
819 dout(7) << " current root is " << *root
<< dendl
;
822 // i am already a subtree.
823 dir
->set_dir_auth(auth
);
825 // i am a new subtree.
826 dout(10) << " new subtree at " << *dir
<< dendl
;
827 assert(subtrees
.count(dir
) == 0);
828 subtrees
[dir
]; // create empty subtree bounds list for me.
829 dir
->get(CDir::PIN_SUBTREE
);
832 dir
->set_dir_auth(auth
);
834 // move items nested beneath me, under me.
835 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
836 while (p
!= subtrees
[root
].end()) {
837 set
<CDir
*>::iterator next
= p
;
839 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
841 dout(10) << " claiming child bound " << **p
<< dendl
;
842 subtrees
[dir
].insert(*p
);
843 subtrees
[root
].erase(p
);
848 // i am a bound of the parent subtree.
849 subtrees
[root
].insert(dir
);
851 // i am now the subtree root.
854 // adjust recursive pop counters
855 if (dir
->is_auth()) {
856 utime_t now
= ceph_clock_now();
857 CDir
*p
= dir
->get_parent_dir();
859 p
->pop_auth_subtree
.sub(now
, decayrate
, dir
->pop_auth_subtree
);
860 if (p
->is_subtree_root()) break;
861 p
= p
->inode
->get_parent_dir();
866 eval_subtree_root(dir
->get_inode());
873 void MDCache::try_subtree_merge(CDir
*dir
)
875 dout(7) << "try_subtree_merge " << *dir
<< dendl
;
876 assert(subtrees
.count(dir
));
877 set
<CDir
*> oldbounds
= subtrees
[dir
];
879 // try merge at my root
880 try_subtree_merge_at(dir
);
882 // try merge at my old bounds
883 for (set
<CDir
*>::iterator p
= oldbounds
.begin();
884 p
!= oldbounds
.end();
886 try_subtree_merge_at(*p
);
889 class C_MDC_SubtreeMergeWB
: public MDCacheLogContext
{
893 C_MDC_SubtreeMergeWB(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) : MDCacheLogContext(mdc
), in(i
), mut(m
) {}
894 void finish(int r
) override
{
895 mdcache
->subtree_merge_writebehind_finish(in
, mut
);
899 void MDCache::try_subtree_merge_at(CDir
*dir
, bool do_eval
)
901 dout(10) << "try_subtree_merge_at " << *dir
<< dendl
;
902 assert(subtrees
.count(dir
));
904 if (mds
->is_any_replay() || mds
->is_resolve())
907 // merge with parent?
909 if (!dir
->inode
->is_base())
910 parent
= get_subtree_root(dir
->get_parent_dir());
912 if (parent
!= dir
&& // we have a parent,
913 parent
->dir_auth
== dir
->dir_auth
&& // auth matches,
914 dir
->dir_auth
.second
== CDIR_AUTH_UNKNOWN
&& // auth is unambiguous,
915 !dir
->state_test(CDir::STATE_EXPORTBOUND
) && // not an exportbound,
916 !dir
->state_test(CDir::STATE_AUXSUBTREE
)) { // not aux subtree
917 // merge with parent.
918 dout(10) << " subtree merge at " << *dir
<< dendl
;
919 dir
->set_dir_auth(CDIR_AUTH_DEFAULT
);
921 // move our bounds under the parent
922 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
923 p
!= subtrees
[dir
].end();
925 subtrees
[parent
].insert(*p
);
927 // we are no longer a subtree or bound
928 dir
->put(CDir::PIN_SUBTREE
);
930 subtrees
[parent
].erase(dir
);
932 // adjust popularity?
933 if (dir
->is_auth()) {
934 utime_t now
= ceph_clock_now();
935 CDir
*p
= dir
->get_parent_dir();
937 p
->pop_auth_subtree
.add(now
, decayrate
, dir
->pop_auth_subtree
);
938 if (p
->is_subtree_root()) break;
939 p
= p
->inode
->get_parent_dir();
944 eval_subtree_root(dir
->get_inode());
950 void MDCache::subtree_merge_writebehind_finish(CInode
*in
, MutationRef
& mut
)
952 dout(10) << "subtree_merge_writebehind_finish on " << in
<< dendl
;
953 in
->pop_and_dirty_projected_inode(mut
->ls
);
956 mds
->locker
->drop_locks(mut
.get());
959 in
->auth_unpin(this);
962 void MDCache::eval_subtree_root(CInode
*diri
)
964 // evaluate subtree inode filelock?
965 // (we should scatter the filelock on subtree bounds)
967 mds
->locker
->try_eval(diri
, CEPH_LOCK_IFILE
| CEPH_LOCK_INEST
);
971 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, set
<CDir
*>& bounds
, mds_authority_t auth
)
973 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
975 << " bounds " << bounds
981 if (dir
->ino() == MDS_INO_ROOT
) {
982 root
= dir
; // bootstrap hack.
983 if (subtrees
.count(root
) == 0) {
985 root
->get(CDir::PIN_SUBTREE
);
988 root
= get_subtree_root(dir
); // subtree root
991 assert(subtrees
.count(root
));
992 dout(7) << " current root is " << *root
<< dendl
;
994 mds_authority_t oldauth
= dir
->authority();
997 // i am already a subtree.
998 dir
->set_dir_auth(auth
);
1000 // i am a new subtree.
1001 dout(10) << " new subtree at " << *dir
<< dendl
;
1002 assert(subtrees
.count(dir
) == 0);
1003 subtrees
[dir
]; // create empty subtree bounds list for me.
1004 dir
->get(CDir::PIN_SUBTREE
);
1007 dir
->set_dir_auth(auth
);
1009 // move items nested beneath me, under me.
1010 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1011 while (p
!= subtrees
[root
].end()) {
1012 set
<CDir
*>::iterator next
= p
;
1014 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
1016 dout(10) << " claiming child bound " << **p
<< dendl
;
1017 subtrees
[dir
].insert(*p
);
1018 subtrees
[root
].erase(p
);
1023 // i am a bound of the parent subtree.
1024 subtrees
[root
].insert(dir
);
1026 // i am now the subtree root.
1030 // verify/adjust bounds.
1031 // - these may be new, or
1032 // - beneath existing ambiguous bounds (which will be collapsed),
1033 // - but NOT beneath unambiguous bounds.
1034 for (set
<CDir
*>::iterator p
= bounds
.begin();
1040 if (subtrees
[dir
].count(bound
) == 0) {
1041 if (get_subtree_root(bound
) == dir
) {
1042 dout(10) << " new bound " << *bound
<< ", adjusting auth back to old " << oldauth
<< dendl
;
1043 adjust_subtree_auth(bound
, oldauth
); // otherwise, adjust at bound.
1046 dout(10) << " want bound " << *bound
<< dendl
;
1047 CDir
*t
= get_subtree_root(bound
->get_parent_dir());
1048 if (subtrees
[t
].count(bound
) == 0) {
1050 dout(10) << " new bound " << *bound
<< dendl
;
1051 adjust_subtree_auth(bound
, t
->authority());
1053 // make sure it's nested beneath ambiguous subtree(s)
1055 while (subtrees
[dir
].count(t
) == 0)
1056 t
= get_subtree_root(t
->get_parent_dir());
1057 dout(10) << " swallowing intervening subtree at " << *t
<< dendl
;
1058 adjust_subtree_auth(t
, auth
);
1059 try_subtree_merge_at(t
);
1060 t
= get_subtree_root(bound
->get_parent_dir());
1061 if (t
== dir
) break;
1066 dout(10) << " already have bound " << *bound
<< dendl
;
1069 // merge stray bounds?
1070 while (!subtrees
[dir
].empty()) {
1071 set
<CDir
*> copy
= subtrees
[dir
];
1072 for (set
<CDir
*>::iterator p
= copy
.begin(); p
!= copy
.end(); ++p
) {
1073 if (bounds
.count(*p
) == 0) {
1075 dout(10) << " swallowing extra subtree at " << *stray
<< dendl
;
1076 adjust_subtree_auth(stray
, auth
);
1077 try_subtree_merge_at(stray
);
1080 // swallowing subtree may add new subtree bounds
1081 if (copy
== subtrees
[dir
])
1085 // bound should now match.
1086 verify_subtree_bounds(dir
, bounds
);
1093 * return a set of CDir*'s that correspond to the given bound set. Only adjust
1094 * fragmentation as necessary to get an equivalent bounding set. That is, only
1095 * split if one of our frags spans the provided bounding set. Never merge.
1097 void MDCache::get_force_dirfrag_bound_set(vector
<dirfrag_t
>& dfs
, set
<CDir
*>& bounds
)
1099 dout(10) << "get_force_dirfrag_bound_set " << dfs
<< dendl
;
1102 map
<inodeno_t
, fragset_t
> byino
;
1103 for (vector
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1104 byino
[p
->ino
].insert(p
->frag
);
1105 dout(10) << " by ino: " << byino
<< dendl
;
1107 for (map
<inodeno_t
,fragset_t
>::iterator p
= byino
.begin(); p
!= byino
.end(); ++p
) {
1108 CInode
*diri
= get_inode(p
->first
);
1111 dout(10) << " checking fragset " << p
->second
.get() << " on " << *diri
<< dendl
;
1114 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1115 tmpdft
.force_to_leaf(g_ceph_context
, *q
);
1117 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
1120 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1123 frag_t approx_fg
= diri
->dirfragtree
[fg
.value()];
1125 tmpdft
.get_leaves_under(approx_fg
, ls
);
1126 for (list
<frag_t
>::iterator r
= ls
.begin(); r
!= ls
.end(); ++r
) {
1127 if (p
->second
.get().count(*r
) == 0) {
1128 // not bound, so the resolve message is from auth MDS of the dirfrag
1129 force_dir_fragment(diri
, *r
);
1134 fgls
.push_back(approx_fg
);
1136 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1138 dout(10) << " frag " << fg
<< " contains " << fgls
<< dendl
;
1139 for (list
<frag_t
>::iterator r
= fgls
.begin(); r
!= fgls
.end(); ++r
) {
1140 CDir
*dir
= diri
->get_dirfrag(*r
);
1148 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, vector
<dirfrag_t
>& bound_dfs
, mds_authority_t auth
)
1150 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
1151 << " on " << *dir
<< " bound_dfs " << bound_dfs
<< dendl
;
1154 get_force_dirfrag_bound_set(bound_dfs
, bounds
);
1155 adjust_bounded_subtree_auth(dir
, bounds
, auth
);
1158 void MDCache::map_dirfrag_set(list
<dirfrag_t
>& dfs
, set
<CDir
*>& result
)
1160 dout(10) << "map_dirfrag_set " << dfs
<< dendl
;
1163 map
<inodeno_t
, fragset_t
> ino_fragset
;
1164 for (list
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1165 ino_fragset
[p
->ino
].insert(p
->frag
);
1168 for (map
<inodeno_t
, fragset_t
>::iterator p
= ino_fragset
.begin();
1169 p
!= ino_fragset
.end();
1171 CInode
*in
= get_inode(p
->first
);
1175 list
<frag_t
> fglist
;
1176 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1177 in
->dirfragtree
.get_leaves_under(*q
, fglist
);
1179 dout(15) << "map_dirfrag_set " << p
->second
<< " -> " << fglist
1180 << " on " << *in
<< dendl
;
1182 for (list
<frag_t
>::iterator q
= fglist
.begin(); q
!= fglist
.end(); ++q
) {
1183 CDir
*dir
= in
->get_dirfrag(*q
);
1192 CDir
*MDCache::get_subtree_root(CDir
*dir
)
1194 // find the underlying dir that delegates (or is about to delegate) auth
1196 if (dir
->is_subtree_root())
1198 dir
= dir
->get_inode()->get_parent_dir();
1204 CDir
*MDCache::get_projected_subtree_root(CDir
*dir
)
1206 // find the underlying dir that delegates (or is about to delegate) auth
1208 if (dir
->is_subtree_root())
1210 dir
= dir
->get_inode()->get_projected_parent_dir();
1216 void MDCache::remove_subtree(CDir
*dir
)
1218 dout(10) << "remove_subtree " << *dir
<< dendl
;
1219 assert(subtrees
.count(dir
));
1220 assert(subtrees
[dir
].empty());
1221 subtrees
.erase(dir
);
1222 dir
->put(CDir::PIN_SUBTREE
);
1223 if (dir
->get_parent_dir()) {
1224 CDir
*p
= get_subtree_root(dir
->get_parent_dir());
1225 assert(subtrees
[p
].count(dir
));
1226 subtrees
[p
].erase(dir
);
1230 void MDCache::get_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1232 assert(subtrees
.count(dir
));
1233 bounds
= subtrees
[dir
];
1236 void MDCache::get_wouldbe_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1238 if (subtrees
.count(dir
)) {
1239 // just copy them, dir is a subtree.
1240 get_subtree_bounds(dir
, bounds
);
1243 CDir
*root
= get_subtree_root(dir
);
1244 for (set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1245 p
!= subtrees
[root
].end();
1249 t
= t
->get_parent_dir();
1260 void MDCache::verify_subtree_bounds(CDir
*dir
, const set
<CDir
*>& bounds
)
1262 // for debugging only.
1263 assert(subtrees
.count(dir
));
1264 if (bounds
!= subtrees
[dir
]) {
1265 dout(0) << "verify_subtree_bounds failed" << dendl
;
1266 set
<CDir
*> b
= bounds
;
1267 for (auto &cd
: subtrees
[dir
]) {
1268 if (bounds
.count(cd
)) {
1272 dout(0) << " missing bound " << *cd
<< dendl
;
1274 for (const auto &cd
: b
)
1275 dout(0) << " extra bound " << *cd
<< dendl
;
1277 assert(bounds
== subtrees
[dir
]);
1280 void MDCache::verify_subtree_bounds(CDir
*dir
, const list
<dirfrag_t
>& bounds
)
1282 // for debugging only.
1283 assert(subtrees
.count(dir
));
1285 // make sure that any bounds i do have are properly noted as such.
1287 for (const auto &fg
: bounds
) {
1288 CDir
*bd
= get_dirfrag(fg
);
1290 if (subtrees
[dir
].count(bd
) == 0) {
1291 dout(0) << "verify_subtree_bounds failed: extra bound " << *bd
<< dendl
;
1295 assert(failed
== 0);
1298 void MDCache::project_subtree_rename(CInode
*diri
, CDir
*olddir
, CDir
*newdir
)
1300 dout(10) << "project_subtree_rename " << *diri
<< " from " << *olddir
1301 << " to " << *newdir
<< dendl
;
1302 projected_subtree_renames
[diri
].push_back(pair
<CDir
*,CDir
*>(olddir
, newdir
));
1305 void MDCache::adjust_subtree_after_rename(CInode
*diri
, CDir
*olddir
,
1306 bool pop
, bool imported
)
1308 dout(10) << "adjust_subtree_after_rename " << *diri
<< " from " << *olddir
<< dendl
;
1312 CDir
*newdir
= diri
->get_parent_dir();
1315 map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.find(diri
);
1316 assert(p
!= projected_subtree_renames
.end());
1317 assert(!p
->second
.empty());
1318 assert(p
->second
.front().first
== olddir
);
1319 assert(p
->second
.front().second
== newdir
);
1320 p
->second
.pop_front();
1321 if (p
->second
.empty())
1322 projected_subtree_renames
.erase(p
);
1327 // make sure subtree dirfrags are at the front of the list
1328 diri
->get_subtree_dirfrags(dfls
);
1329 diri
->get_nested_dirfrags(dfls
);
1330 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
1333 dout(10) << "dirfrag " << *dir
<< dendl
;
1334 CDir
*oldparent
= get_subtree_root(olddir
);
1335 dout(10) << " old parent " << *oldparent
<< dendl
;
1336 CDir
*newparent
= get_subtree_root(newdir
);
1337 dout(10) << " new parent " << *newparent
<< dendl
;
1339 if (oldparent
== newparent
) {
1340 dout(10) << "parent unchanged for " << *dir
<< " at " << *oldparent
<< dendl
;
1344 if (dir
->is_subtree_root()) {
1345 // children are fine. change parent.
1346 dout(10) << "moving " << *dir
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1347 assert(subtrees
[oldparent
].count(dir
));
1348 subtrees
[oldparent
].erase(dir
);
1349 assert(subtrees
.count(newparent
));
1350 subtrees
[newparent
].insert(dir
);
1351 try_subtree_merge_at(dir
, !imported
);
1355 // see if any old bounds move to the new parent.
1357 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
1358 p
!= subtrees
[oldparent
].end();
1361 CDir
*broot
= get_subtree_root(bound
->get_parent_dir());
1362 if (broot
!= oldparent
) {
1363 assert(broot
== newparent
);
1364 tomove
.push_back(bound
);
1367 for (list
<CDir
*>::iterator p
= tomove
.begin(); p
!= tomove
.end(); ++p
) {
1369 dout(10) << "moving bound " << *bound
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1370 subtrees
[oldparent
].erase(bound
);
1371 subtrees
[newparent
].insert(bound
);
1375 if (oldparent
->authority() != newparent
->authority()) {
1376 adjust_subtree_auth(dir
, oldparent
->authority(), !imported
); // caller is responsible for *diri.
1377 try_subtree_merge_at(dir
, !imported
);
1386 void MDCache::get_fullauth_subtrees(set
<CDir
*>& s
)
1388 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1389 p
!= subtrees
.end();
1391 CDir
*root
= p
->first
;
1392 if (root
->is_full_dir_auth())
1396 void MDCache::get_auth_subtrees(set
<CDir
*>& s
)
1398 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1399 p
!= subtrees
.end();
1401 CDir
*root
= p
->first
;
1402 if (root
->is_auth())
1410 int MDCache::num_subtrees()
1412 return subtrees
.size();
1415 int MDCache::num_subtrees_fullauth()
1418 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1419 p
!= subtrees
.end();
1421 CDir
*root
= p
->first
;
1422 if (root
->is_full_dir_auth())
1428 int MDCache::num_subtrees_fullnonauth()
1431 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1432 p
!= subtrees
.end();
1434 CDir
*root
= p
->first
;
1435 if (root
->is_full_dir_nonauth())
1443 // ===================================
1444 // journal and snap/cow helpers
1448 * find first inode in cache that follows given snapid. otherwise, return current.
1450 CInode
*MDCache::pick_inode_snap(CInode
*in
, snapid_t follows
)
1452 dout(10) << "pick_inode_snap follows " << follows
<< " on " << *in
<< dendl
;
1453 assert(in
->last
== CEPH_NOSNAP
);
1455 SnapRealm
*realm
= in
->find_snaprealm();
1456 const set
<snapid_t
>& snaps
= realm
->get_snaps();
1457 dout(10) << " realm " << *realm
<< " " << *realm
->inode
<< dendl
;
1458 dout(10) << " snaps " << snaps
<< dendl
;
1463 for (set
<snapid_t
>::const_iterator p
= snaps
.upper_bound(follows
); // first item > follows
1466 CInode
*t
= get_inode(in
->ino(), *p
);
1469 dout(10) << "pick_inode_snap snap " << *p
<< " found " << *in
<< dendl
;
1478 * note: i'm currently cheating wrt dirty and inode.version on cow
1479 * items. instead of doing a full dir predirty, i just take the
1480 * original item's version, and set the dirty flag (via
1481 * mutation::add_cow_{inode,dentry}() and mutation::apply(). that
1482 * means a special case in the dir commit clean sweep assertions.
1485 CInode
*MDCache::cow_inode(CInode
*in
, snapid_t last
)
1487 assert(last
>= in
->first
);
1489 SnapRealm
*realm
= in
->find_snaprealm();
1490 const set
<snapid_t
>& snaps
= realm
->get_snaps();
1492 // make sure snap inode's last match existing snapshots.
1493 // MDCache::pick_inode_snap() requires this.
1494 snapid_t last_snap
= last
;
1495 if (snaps
.count(last
) == 0) {
1496 set
<snapid_t
>::const_iterator p
= snaps
.upper_bound(last
);
1497 if (p
!= snaps
.begin()) {
1499 if (*p
>= in
->first
)
1504 CInode
*oldin
= new CInode(this, true, in
->first
, last_snap
);
1505 oldin
->inode
= *in
->get_previous_projected_inode();
1506 oldin
->symlink
= in
->symlink
;
1507 oldin
->xattrs
= *in
->get_previous_projected_xattrs();
1508 oldin
->inode
.trim_client_ranges(last
);
1510 if (in
->first
< in
->oldest_snap
)
1511 in
->oldest_snap
= in
->first
;
1515 dout(10) << "cow_inode " << *in
<< " to " << *oldin
<< dendl
;
1518 if (in
->last
!= CEPH_NOSNAP
) {
1519 CInode
*head_in
= get_inode(in
->ino());
1521 if (head_in
->split_need_snapflush(oldin
, in
)) {
1522 oldin
->client_snap_caps
= in
->client_snap_caps
;
1523 for (compact_map
<int,set
<client_t
> >::iterator p
= in
->client_snap_caps
.begin();
1524 p
!= in
->client_snap_caps
.end();
1526 SimpleLock
*lock
= oldin
->get_lock(p
->first
);
1528 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
1529 oldin
->auth_pin(lock
);
1530 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1531 lock
->get_wrlock(true);
1539 for (map
<client_t
,Capability
*>::iterator p
= in
->client_caps
.begin();
1540 p
!= in
->client_caps
.end();
1542 client_t client
= p
->first
;
1543 Capability
*cap
= p
->second
;
1544 int issued
= cap
->issued();
1545 if ((issued
& CEPH_CAP_ANY_WR
) &&
1546 cap
->client_follows
< last
) {
1548 for (int i
= 0; i
< num_cinode_locks
; i
++) {
1549 if (issued
& cinode_lock_info
[i
].wr_caps
) {
1550 int lockid
= cinode_lock_info
[i
].lock
;
1551 SimpleLock
*lock
= oldin
->get_lock(lockid
);
1553 oldin
->client_snap_caps
[lockid
].insert(client
);
1554 oldin
->auth_pin(lock
);
1555 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1556 lock
->get_wrlock(true);
1557 dout(10) << " client." << client
<< " cap " << ccap_string(issued
& cinode_lock_info
[i
].wr_caps
)
1558 << " wrlock lock " << *lock
<< " on " << *oldin
<< dendl
;
1561 cap
->client_follows
= last
;
1563 // we need snapflushes for any intervening snaps
1564 dout(10) << " snaps " << snaps
<< dendl
;
1565 for (set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(oldin
->first
);
1566 q
!= snaps
.end() && *q
<= last
;
1568 in
->add_need_snapflush(oldin
, *q
, client
);
1571 dout(10) << " ignoring client." << client
<< " cap follows " << cap
->client_follows
<< dendl
;
1578 void MDCache::journal_cow_dentry(MutationImpl
*mut
, EMetaBlob
*metablob
,
1579 CDentry
*dn
, snapid_t follows
,
1580 CInode
**pcow_inode
, CDentry::linkage_t
*dnl
)
1583 dout(10) << "journal_cow_dentry got null CDentry, returning" << dendl
;
1586 dout(10) << "journal_cow_dentry follows " << follows
<< " on " << *dn
<< dendl
;
1587 assert(dn
->is_auth());
1589 // nothing to cow on a null dentry, fix caller
1591 dnl
= dn
->get_projected_linkage();
1592 assert(!dnl
->is_null());
1594 if (dnl
->is_primary() && dnl
->get_inode()->is_multiversion()) {
1595 // multiversion inode.
1596 CInode
*in
= dnl
->get_inode();
1597 SnapRealm
*realm
= NULL
;
1599 if (in
->get_projected_parent_dn() != dn
) {
1600 assert(follows
== CEPH_NOSNAP
);
1601 realm
= dn
->dir
->inode
->find_snaprealm();
1602 snapid_t dir_follows
= realm
->get_newest_snap();
1604 if (dir_follows
+1 > dn
->first
) {
1605 snapid_t oldfirst
= dn
->first
;
1606 dn
->first
= dir_follows
+1;
1607 if (realm
->has_snaps_in_range(oldfirst
, dir_follows
)) {
1608 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->name
, in
->ino(), in
->d_type(),
1609 oldfirst
, dir_follows
);
1611 dout(10) << " olddn " << *olddn
<< dendl
;
1612 metablob
->add_remote_dentry(olddn
, true);
1613 mut
->add_cow_dentry(olddn
);
1614 // FIXME: adjust link count here? hmm.
1616 if (dir_follows
+1 > in
->first
)
1617 in
->cow_old_inode(dir_follows
, false);
1621 if (in
->snaprealm
) {
1622 realm
= in
->snaprealm
;
1623 follows
= realm
->get_newest_seq();
1625 follows
= dir_follows
;
1627 realm
= in
->find_snaprealm();
1628 if (follows
== CEPH_NOSNAP
)
1629 follows
= realm
->get_newest_seq();
1633 if (follows
< in
->first
) {
1634 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *in
<< dendl
;
1638 if (!realm
->has_snaps_in_range(in
->first
, follows
)) {
1639 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *in
<< dendl
;
1640 in
->first
= follows
+ 1;
1644 in
->cow_old_inode(follows
, false);
1647 SnapRealm
*realm
= dn
->dir
->inode
->find_snaprealm();
1648 if (follows
== CEPH_NOSNAP
)
1649 follows
= realm
->get_newest_seq();
1652 if (follows
< dn
->first
) {
1653 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *dn
<< dendl
;
1657 // update dn.first before adding old dentry to cdir's map
1658 snapid_t oldfirst
= dn
->first
;
1659 dn
->first
= follows
+1;
1661 CInode
*in
= dnl
->is_primary() ? dnl
->get_inode() : NULL
;
1663 if (!realm
->has_snaps_in_range(oldfirst
, follows
)) {
1664 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *dn
<< dendl
;
1666 in
->first
= follows
+1;
1670 dout(10) << " dn " << *dn
<< dendl
;
1672 CInode
*oldin
= cow_inode(in
, follows
);
1673 mut
->add_cow_inode(oldin
);
1675 *pcow_inode
= oldin
;
1676 CDentry
*olddn
= dn
->dir
->add_primary_dentry(dn
->name
, oldin
, oldfirst
, follows
);
1677 oldin
->inode
.version
= olddn
->pre_dirty();
1678 dout(10) << " olddn " << *olddn
<< dendl
;
1679 bool need_snapflush
= !oldin
->client_snap_caps
.empty();
1681 mut
->ls
->open_files
.push_back(&oldin
->item_open_file
);
1682 metablob
->add_primary_dentry(olddn
, 0, true, false, false, need_snapflush
);
1683 mut
->add_cow_dentry(olddn
);
1685 assert(dnl
->is_remote());
1686 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->name
, dnl
->get_remote_ino(), dnl
->get_remote_d_type(),
1689 dout(10) << " olddn " << *olddn
<< dendl
;
1690 metablob
->add_remote_dentry(olddn
, true);
1691 mut
->add_cow_dentry(olddn
);
1697 void MDCache::journal_cow_inode(MutationRef
& mut
, EMetaBlob
*metablob
,
1698 CInode
*in
, snapid_t follows
,
1699 CInode
**pcow_inode
)
1701 dout(10) << "journal_cow_inode follows " << follows
<< " on " << *in
<< dendl
;
1702 CDentry
*dn
= in
->get_projected_parent_dn();
1703 journal_cow_dentry(mut
.get(), metablob
, dn
, follows
, pcow_inode
);
1706 void MDCache::journal_dirty_inode(MutationImpl
*mut
, EMetaBlob
*metablob
, CInode
*in
, snapid_t follows
)
1708 if (in
->is_base()) {
1709 metablob
->add_root(true, in
, in
->get_projected_inode());
1711 if (follows
== CEPH_NOSNAP
&& in
->last
!= CEPH_NOSNAP
)
1712 follows
= in
->first
- 1;
1713 CDentry
*dn
= in
->get_projected_parent_dn();
1714 if (!dn
->get_projected_linkage()->is_null()) // no need to cow a null dentry
1715 journal_cow_dentry(mut
, metablob
, dn
, follows
);
1716 if (in
->get_projected_inode()->is_backtrace_updated()) {
1717 bool dirty_pool
= in
->get_projected_inode()->layout
.pool_id
!=
1718 in
->get_previous_projected_inode()->layout
.pool_id
;
1719 metablob
->add_primary_dentry(dn
, in
, true, true, dirty_pool
);
1721 metablob
->add_primary_dentry(dn
, in
, true);
1728 // nested ---------------------------------------------------------------
1730 void MDCache::project_rstat_inode_to_frag(CInode
*cur
, CDir
*parent
, snapid_t first
,
1731 int linkunlink
, SnapRealm
*prealm
)
1733 CDentry
*parentdn
= cur
->get_projected_parent_dn();
1734 inode_t
*curi
= cur
->get_projected_inode();
1736 if (cur
->first
> first
)
1739 dout(10) << "projected_rstat_inode_to_frag first " << first
<< " linkunlink " << linkunlink
1740 << " " << *cur
<< dendl
;
1741 dout(20) << " frag head is [" << parent
->first
<< ",head] " << dendl
;
1742 dout(20) << " inode update is [" << first
<< "," << cur
->last
<< "]" << dendl
;
1745 * FIXME. this incompletely propagates rstats to _old_ parents
1746 * (i.e. shortly after a directory rename). but we need full
1747 * blown hard link backpointers to make this work properly...
1749 snapid_t floor
= parentdn
->first
;
1750 dout(20) << " floor of " << floor
<< " from parent dn " << *parentdn
<< dendl
;
1753 prealm
= parent
->inode
->find_snaprealm();
1754 const set
<snapid_t
> snaps
= prealm
->get_snaps();
1756 if (cur
->last
!= CEPH_NOSNAP
) {
1757 assert(cur
->dirty_old_rstats
.empty());
1758 set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(MAX(first
, floor
));
1759 if (q
== snaps
.end() || *q
> cur
->last
)
1763 if (cur
->last
>= floor
) {
1765 if (cur
->state_test(CInode::STATE_AMBIGUOUSAUTH
) && cur
->is_auth()) {
1766 // rename src inode is not projected in the slave rename prep case. so we should
1767 // avoid updateing the inode.
1768 assert(linkunlink
< 0);
1769 assert(cur
->is_frozen_inode());
1772 _project_rstat_inode_to_frag(*curi
, MAX(first
, floor
), cur
->last
, parent
,
1773 linkunlink
, update
);
1776 if (g_conf
->mds_snap_rstat
) {
1777 for (compact_set
<snapid_t
>::iterator p
= cur
->dirty_old_rstats
.begin();
1778 p
!= cur
->dirty_old_rstats
.end();
1780 old_inode_t
& old
= cur
->old_inodes
[*p
];
1781 snapid_t ofirst
= MAX(old
.first
, floor
);
1782 set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(ofirst
);
1783 if (q
== snaps
.end() || *q
> *p
)
1786 _project_rstat_inode_to_frag(old
.inode
, ofirst
, *p
, parent
, 0, false);
1789 cur
->dirty_old_rstats
.clear();
1793 void MDCache::_project_rstat_inode_to_frag(inode_t
& inode
, snapid_t ofirst
, snapid_t last
,
1794 CDir
*parent
, int linkunlink
, bool update_inode
)
1796 dout(10) << "_project_rstat_inode_to_frag [" << ofirst
<< "," << last
<< "]" << dendl
;
1797 dout(20) << " inode rstat " << inode
.rstat
<< dendl
;
1798 dout(20) << " inode accounted_rstat " << inode
.accounted_rstat
<< dendl
;
1800 if (linkunlink
== 0) {
1801 delta
.add(inode
.rstat
);
1802 delta
.sub(inode
.accounted_rstat
);
1803 } else if (linkunlink
< 0) {
1804 delta
.sub(inode
.accounted_rstat
);
1806 delta
.add(inode
.rstat
);
1808 dout(20) << " delta " << delta
<< dendl
;
1811 inode
.accounted_rstat
= inode
.rstat
;
1813 while (last
>= ofirst
) {
1815 * pick fnode version to update. at each iteration, we want to
1816 * pick a segment ending in 'last' to update. split as necessary
1817 * to make that work. then, adjust first up so that we only
1818 * update one segment at a time. then loop to cover the whole
1819 * [ofirst,last] interval.
1821 nest_info_t
*prstat
;
1823 fnode_t
*pf
= parent
->get_projected_fnode();
1824 if (last
== CEPH_NOSNAP
) {
1825 if (g_conf
->mds_snap_rstat
)
1826 first
= MAX(ofirst
, parent
->first
);
1828 first
= parent
->first
;
1829 prstat
= &pf
->rstat
;
1830 dout(20) << " projecting to head [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1832 if (first
> parent
->first
&&
1833 !(pf
->rstat
== pf
->accounted_rstat
)) {
1834 dout(10) << " target snapped and not fully accounted, cow to dirty_old_rstat ["
1835 << parent
->first
<< "," << (first
-1) << "] "
1836 << " " << *prstat
<< "/" << pf
->accounted_rstat
1838 parent
->dirty_old_rstat
[first
-1].first
= parent
->first
;
1839 parent
->dirty_old_rstat
[first
-1].rstat
= pf
->rstat
;
1840 parent
->dirty_old_rstat
[first
-1].accounted_rstat
= pf
->accounted_rstat
;
1842 parent
->first
= first
;
1843 } else if (!g_conf
->mds_snap_rstat
) {
1844 // drop snapshots' rstats
1846 } else if (last
>= parent
->first
) {
1847 first
= parent
->first
;
1848 parent
->dirty_old_rstat
[last
].first
= first
;
1849 parent
->dirty_old_rstat
[last
].rstat
= pf
->rstat
;
1850 parent
->dirty_old_rstat
[last
].accounted_rstat
= pf
->accounted_rstat
;
1851 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1852 dout(10) << " projecting to newly split dirty_old_fnode [" << first
<< "," << last
<< "] "
1853 << " " << *prstat
<< "/" << pf
->accounted_rstat
<< dendl
;
1855 // be careful, dirty_old_rstat is a _sparse_ map.
1856 // sorry, this is ugly.
1859 // find any intersection with last
1860 compact_map
<snapid_t
,old_rstat_t
>::iterator p
= parent
->dirty_old_rstat
.lower_bound(last
);
1861 if (p
== parent
->dirty_old_rstat
.end()) {
1862 dout(20) << " no dirty_old_rstat with last >= last " << last
<< dendl
;
1863 if (!parent
->dirty_old_rstat
.empty() && parent
->dirty_old_rstat
.rbegin()->first
>= first
) {
1864 dout(20) << " last dirty_old_rstat ends at " << parent
->dirty_old_rstat
.rbegin()->first
<< dendl
;
1865 first
= parent
->dirty_old_rstat
.rbegin()->first
+1;
1868 // *p last is >= last
1869 if (p
->second
.first
<= last
) {
1870 // *p intersects [first,last]
1871 if (p
->second
.first
< first
) {
1872 dout(10) << " splitting off left bit [" << p
->second
.first
<< "," << first
-1 << "]" << dendl
;
1873 parent
->dirty_old_rstat
[first
-1] = p
->second
;
1874 p
->second
.first
= first
;
1876 if (p
->second
.first
> first
)
1877 first
= p
->second
.first
;
1878 if (last
< p
->first
) {
1879 dout(10) << " splitting off right bit [" << last
+1 << "," << p
->first
<< "]" << dendl
;
1880 parent
->dirty_old_rstat
[last
] = p
->second
;
1881 p
->second
.first
= last
+1;
1884 // *p is to the _right_ of [first,last]
1885 p
= parent
->dirty_old_rstat
.lower_bound(first
);
1886 // new *p last is >= first
1887 if (p
->second
.first
<= last
&& // new *p isn't also to the right, and
1888 p
->first
>= first
) { // it intersects our first bit,
1889 dout(10) << " staying to the right of [" << p
->second
.first
<< "," << p
->first
<< "]..." << dendl
;
1892 dout(10) << " projecting to new dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1895 dout(20) << " projecting to dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1896 parent
->dirty_old_rstat
[last
].first
= first
;
1897 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1901 dout(20) << " project to [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1902 assert(last
>= first
);
1905 inode
.accounted_rstat
= inode
.rstat
;
1906 dout(20) << " result [" << first
<< "," << last
<< "] " << *prstat
<< " " << *parent
<< dendl
;
1912 void MDCache::project_rstat_frag_to_inode(nest_info_t
& rstat
, nest_info_t
& accounted_rstat
,
1913 snapid_t ofirst
, snapid_t last
,
1914 CInode
*pin
, bool cow_head
)
1916 dout(10) << "project_rstat_frag_to_inode [" << ofirst
<< "," << last
<< "]" << dendl
;
1917 dout(20) << " frag rstat " << rstat
<< dendl
;
1918 dout(20) << " frag accounted_rstat " << accounted_rstat
<< dendl
;
1919 nest_info_t delta
= rstat
;
1920 delta
.sub(accounted_rstat
);
1921 dout(20) << " delta " << delta
<< dendl
;
1923 while (last
>= ofirst
) {
1926 if (last
== pin
->last
) {
1927 pi
= pin
->get_projected_inode();
1928 first
= MAX(ofirst
, pin
->first
);
1929 if (first
> pin
->first
) {
1930 old_inode_t
& old
= pin
->cow_old_inode(first
-1, cow_head
);
1931 dout(20) << " cloned old_inode rstat is " << old
.inode
.rstat
<< dendl
;
1934 if (last
>= pin
->first
) {
1936 pin
->cow_old_inode(last
, cow_head
);
1938 // our life is easier here because old_inodes is not sparse
1939 // (although it may not begin at snapid 1)
1940 compact_map
<snapid_t
,old_inode_t
>::iterator p
= pin
->old_inodes
.lower_bound(last
);
1941 if (p
== pin
->old_inodes
.end()) {
1942 dout(10) << " no old_inode <= " << last
<< ", done." << dendl
;
1945 first
= p
->second
.first
;
1947 dout(10) << " oldest old_inode is [" << first
<< "," << p
->first
<< "], done." << dendl
;
1948 //assert(p == pin->old_inodes.begin());
1951 if (p
->first
> last
) {
1952 dout(10) << " splitting right old_inode [" << first
<< "," << p
->first
<< "] to ["
1953 << (last
+1) << "," << p
->first
<< "]" << dendl
;
1954 pin
->old_inodes
[last
] = p
->second
;
1955 p
->second
.first
= last
+1;
1956 pin
->dirty_old_rstats
.insert(p
->first
);
1959 if (first
< ofirst
) {
1960 dout(10) << " splitting left old_inode [" << first
<< "," << last
<< "] to ["
1961 << first
<< "," << ofirst
-1 << "]" << dendl
;
1962 pin
->old_inodes
[ofirst
-1] = pin
->old_inodes
[last
];
1963 pin
->dirty_old_rstats
.insert(ofirst
-1);
1964 pin
->old_inodes
[last
].first
= first
= ofirst
;
1966 pi
= &pin
->old_inodes
[last
].inode
;
1967 pin
->dirty_old_rstats
.insert(last
);
1969 dout(20) << " projecting to [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1970 pi
->rstat
.add(delta
);
1971 dout(20) << " result [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1977 void MDCache::broadcast_quota_to_client(CInode
*in
)
1979 if (!in
->is_auth() || in
->is_frozen())
1982 inode_t
*i
= in
->get_projected_inode();
1984 if (!i
->quota
.is_enable())
1987 for (map
<client_t
,Capability
*>::iterator it
= in
->client_caps
.begin();
1988 it
!= in
->client_caps
.end();
1990 Session
*session
= mds
->get_session(it
->first
);
1991 if (!session
|| !session
->connection
||
1992 !session
->connection
->has_feature(CEPH_FEATURE_MDS_QUOTA
))
1995 Capability
*cap
= it
->second
;
1996 if (cap
->last_rbytes
== i
->rstat
.rbytes
&&
1997 cap
->last_rsize
== i
->rstat
.rsize())
2000 if (i
->quota
.max_files
> 0) {
2001 if (i
->rstat
.rsize() >= i
->quota
.max_files
)
2004 if ((abs(cap
->last_rsize
- i
->quota
.max_files
) >> 4) <
2005 abs(cap
->last_rsize
- i
->rstat
.rsize()))
2009 if (i
->quota
.max_bytes
> 0) {
2010 if (i
->rstat
.rbytes
> i
->quota
.max_bytes
- (i
->quota
.max_bytes
>> 3))
2013 if ((abs(cap
->last_rbytes
- i
->quota
.max_bytes
) >> 4) <
2014 abs(cap
->last_rbytes
- i
->rstat
.rbytes
))
2021 cap
->last_rsize
= i
->rstat
.rsize();
2022 cap
->last_rbytes
= i
->rstat
.rbytes
;
2024 MClientQuota
*msg
= new MClientQuota();
2025 msg
->ino
= in
->ino();
2026 msg
->rstat
= i
->rstat
;
2027 msg
->quota
= i
->quota
;
2028 mds
->send_message_client_counted(msg
, session
->connection
);
2030 for (compact_map
<mds_rank_t
, unsigned>::iterator it
= in
->replicas_begin();
2031 it
!= in
->replicas_end();
2033 MGatherCaps
*msg
= new MGatherCaps
;
2034 msg
->ino
= in
->ino();
2035 mds
->send_message_mds(msg
, it
->first
);
2040 * NOTE: we _have_ to delay the scatter if we are called during a
2041 * rejoin, because we can't twiddle locks between when the
2042 * rejoin_(weak|strong) is received and when we send the rejoin_ack.
2043 * normally, this isn't a problem: a recover mds doesn't twiddle locks
2044 * (no requests), and a survivor acks immediately. _except_ that
2045 * during rejoin_(weak|strong) processing, we may complete a lock
2046 * gather, and do a scatter_writebehind.. and we _can't_ twiddle the
2047 * scatterlock state in that case or the lock states will get out of
2048 * sync between the auth and replica.
2050 * the simple solution is to never do the scatter here. instead, put
2051 * the scatterlock on a list if it isn't already wrlockable. this is
2052 * probably the best plan anyway, since we avoid too many
2053 * scatters/locks under normal usage.
2056 * some notes on dirlock/nestlock scatterlock semantics:
2058 * the fragstat (dirlock) will never be updated without
2059 * dirlock+nestlock wrlock held by the caller.
2061 * the rstat (nestlock) _may_ get updated without a wrlock when nested
2062 * data is pushed up the tree. this could be changed with some
2063 * restructuring here, but in its current form we ensure that the
2064 * fragstat+rstat _always_ reflect an accurrate summation over the dir
2065 * frag, which is nice. and, we only need to track frags that need to
2066 * be nudged (and not inodes with pending rstat changes that need to
2067 * be pushed into the frag). a consequence of this is that the
2068 * accounted_rstat on scatterlock sync may not match our current
2069 * rstat. this is normal and expected.
2071 void MDCache::predirty_journal_parents(MutationRef mut
, EMetaBlob
*blob
,
2072 CInode
*in
, CDir
*parent
,
2073 int flags
, int linkunlink
,
2076 bool primary_dn
= flags
& PREDIRTY_PRIMARY
;
2077 bool do_parent_mtime
= flags
& PREDIRTY_DIR
;
2078 bool shallow
= flags
& PREDIRTY_SHALLOW
;
2080 assert(mds
->mdlog
->entry_is_open());
2082 // make sure stamp is set
2083 if (mut
->get_mds_stamp() == utime_t())
2084 mut
->set_mds_stamp(ceph_clock_now());
2089 dout(10) << "predirty_journal_parents"
2090 << (do_parent_mtime
? " do_parent_mtime":"")
2091 << " linkunlink=" << linkunlink
2092 << (primary_dn
? " primary_dn":" remote_dn")
2093 << (shallow
? " SHALLOW":"")
2094 << " follows " << cfollows
2095 << " " << *in
<< dendl
;
2099 parent
= in
->get_projected_parent_dn()->get_dir();
2102 if (flags
== 0 && linkunlink
== 0) {
2103 dout(10) << " no flags/linkunlink, just adding dir context to blob(s)" << dendl
;
2104 blob
->add_dir_context(parent
);
2108 // build list of inodes to wrlock, dirty, and update
2111 CDentry
*parentdn
= NULL
;
2114 //assert(cur->is_auth() || !primary_dn); // this breaks the rename auth twiddle hack
2115 assert(parent
->is_auth());
2117 // opportunistically adjust parent dirfrag
2118 CInode
*pin
= parent
->get_inode();
2121 mut
->auth_pin(parent
);
2122 mut
->add_projected_fnode(parent
);
2124 fnode_t
*pf
= parent
->project_fnode();
2125 pf
->version
= parent
->pre_dirty();
2127 if (do_parent_mtime
|| linkunlink
) {
2128 assert(mut
->wrlocks
.count(&pin
->filelock
));
2129 assert(mut
->wrlocks
.count(&pin
->nestlock
));
2130 assert(cfollows
== CEPH_NOSNAP
);
2132 // update stale fragstat/rstat?
2133 parent
->resync_accounted_fragstat();
2134 parent
->resync_accounted_rstat();
2136 if (do_parent_mtime
) {
2137 pf
->fragstat
.mtime
= mut
->get_op_stamp();
2138 pf
->fragstat
.change_attr
++;
2139 dout(10) << "predirty_journal_parents bumping change_attr to " << pf
->fragstat
.change_attr
<< " on " << parent
<< dendl
;
2140 if (pf
->fragstat
.mtime
> pf
->rstat
.rctime
) {
2141 dout(10) << "predirty_journal_parents updating mtime on " << *parent
<< dendl
;
2142 pf
->rstat
.rctime
= pf
->fragstat
.mtime
;
2144 dout(10) << "predirty_journal_parents updating mtime UNDERWATER on " << *parent
<< dendl
;
2148 dout(10) << "predirty_journal_parents updating size on " << *parent
<< dendl
;
2150 pf
->fragstat
.nsubdirs
+= linkunlink
;
2151 //pf->rstat.rsubdirs += linkunlink;
2153 pf
->fragstat
.nfiles
+= linkunlink
;
2154 //pf->rstat.rfiles += linkunlink;
2161 // don't update parent this pass
2162 } else if (!linkunlink
&& !(pin
->nestlock
.can_wrlock(-1) &&
2163 pin
->versionlock
.can_wrlock())) {
2164 dout(20) << " unwritable parent nestlock " << pin
->nestlock
2165 << ", marking dirty rstat on " << *cur
<< dendl
;
2166 cur
->mark_dirty_rstat();
2168 // if we don't hold a wrlock reference on this nestlock, take one,
2169 // because we are about to write into the dirfrag fnode and that needs
2170 // to commit before the lock can cycle.
2172 assert(pin
->nestlock
.get_num_wrlocks() || mut
->is_slave());
2175 if (mut
->wrlocks
.count(&pin
->nestlock
) == 0) {
2176 dout(10) << " taking wrlock on " << pin
->nestlock
<< " on " << *pin
<< dendl
;
2177 mds
->locker
->wrlock_force(&pin
->nestlock
, mut
);
2180 // now we can project the inode rstat diff the dirfrag
2181 SnapRealm
*prealm
= pin
->find_snaprealm();
2183 snapid_t follows
= cfollows
;
2184 if (follows
== CEPH_NOSNAP
)
2185 follows
= prealm
->get_newest_seq();
2187 snapid_t first
= follows
+1;
2189 // first, if the frag is stale, bring it back in sync.
2190 parent
->resync_accounted_rstat();
2192 // now push inode rstats into frag
2193 project_rstat_inode_to_frag(cur
, parent
, first
, linkunlink
, prealm
);
2194 cur
->clear_dirty_rstat();
2198 if (!pin
->is_auth() || (!mut
->is_auth_pinned(pin
) && !pin
->can_auth_pin())) {
2199 dout(10) << "predirty_journal_parents !auth or ambig or can't authpin on " << *pin
<< dendl
;
2203 // delay propagating until later?
2204 if (!stop
&& !first
&&
2205 g_conf
->mds_dirstat_min_interval
> 0) {
2206 double since_last_prop
= mut
->get_mds_stamp() - pin
->last_dirstat_prop
;
2207 if (since_last_prop
< g_conf
->mds_dirstat_min_interval
) {
2208 dout(10) << "predirty_journal_parents last prop " << since_last_prop
2209 << " < " << g_conf
->mds_dirstat_min_interval
2210 << ", stopping" << dendl
;
2213 dout(10) << "predirty_journal_parents last prop " << since_last_prop
<< " ago, continuing" << dendl
;
2217 // can cast only because i'm passing nowait=true in the sole user
2218 MDRequestRef mdmut
= static_cast<MDRequestImpl
*>(mut
.get());
2220 mut
->wrlocks
.count(&pin
->nestlock
) == 0 &&
2221 (!pin
->versionlock
.can_wrlock() || // make sure we can take versionlock, too
2223 !mds
->locker
->wrlock_start(&pin
->nestlock
, mdmut
, true)
2224 )) { // ** do not initiate.. see above comment **
2225 dout(10) << "predirty_journal_parents can't wrlock one of " << pin
->versionlock
<< " or " << pin
->nestlock
2226 << " on " << *pin
<< dendl
;
2230 dout(10) << "predirty_journal_parents stop. marking nestlock on " << *pin
<< dendl
;
2231 mds
->locker
->mark_updated_scatterlock(&pin
->nestlock
);
2232 mut
->ls
->dirty_dirfrag_nest
.push_back(&pin
->item_dirty_dirfrag_nest
);
2233 mut
->add_updated_lock(&pin
->nestlock
);
2234 if (do_parent_mtime
|| linkunlink
) {
2235 mds
->locker
->mark_updated_scatterlock(&pin
->filelock
);
2236 mut
->ls
->dirty_dirfrag_dir
.push_back(&pin
->item_dirty_dirfrag_dir
);
2237 mut
->add_updated_lock(&pin
->filelock
);
2241 if (!mut
->wrlocks
.count(&pin
->versionlock
))
2242 mds
->locker
->local_wrlock_grab(&pin
->versionlock
, mut
);
2244 assert(mut
->wrlocks
.count(&pin
->nestlock
) ||
2247 pin
->last_dirstat_prop
= mut
->get_mds_stamp();
2251 mut
->add_projected_inode(pin
);
2252 lsi
.push_front(pin
);
2254 pin
->pre_cow_old_inode(); // avoid cow mayhem!
2256 inode_t
*pi
= pin
->project_inode();
2257 pi
->version
= pin
->pre_dirty();
2260 if (do_parent_mtime
|| linkunlink
) {
2261 dout(20) << "predirty_journal_parents add_delta " << pf
->fragstat
<< dendl
;
2262 dout(20) << "predirty_journal_parents - " << pf
->accounted_fragstat
<< dendl
;
2263 bool touched_mtime
= false, touched_chattr
= false;
2264 pi
->dirstat
.add_delta(pf
->fragstat
, pf
->accounted_fragstat
, &touched_mtime
, &touched_chattr
);
2265 pf
->accounted_fragstat
= pf
->fragstat
;
2267 pi
->mtime
= pi
->ctime
= pi
->dirstat
.mtime
;
2269 pi
->change_attr
= pi
->dirstat
.change_attr
;
2270 dout(20) << "predirty_journal_parents gives " << pi
->dirstat
<< " on " << *pin
<< dendl
;
2272 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2273 if (pi
->dirstat
.size() < 0)
2274 assert(!"negative dirstat size" == g_conf
->mds_verify_scatter
);
2275 if (pi
->dirstat
.size() != pf
->fragstat
.size()) {
2276 mds
->clog
->error() << "unmatched fragstat size on single dirfrag "
2277 << parent
->dirfrag() << ", inode has " << pi
->dirstat
2278 << ", dirfrag has " << pf
->fragstat
;
2280 // trust the dirfrag for now
2281 pi
->dirstat
= pf
->fragstat
;
2283 assert(!"unmatched fragstat size" == g_conf
->mds_verify_scatter
);
2289 * the rule here is to follow the _oldest_ parent with dirty rstat
2290 * data. if we don't propagate all data, we add ourselves to the
2291 * nudge list. that way all rstat data will (eventually) get
2292 * pushed up the tree.
2294 * actually, no. for now, silently drop rstats for old parents. we need
2295 * hard link backpointers to do the above properly.
2301 parentdn
= pin
->get_projected_parent_dn();
2305 dout(10) << "predirty_journal_parents frag->inode on " << *parent
<< dendl
;
2307 // first, if the frag is stale, bring it back in sync.
2308 parent
->resync_accounted_rstat();
2310 if (g_conf
->mds_snap_rstat
) {
2311 for (compact_map
<snapid_t
,old_rstat_t
>::iterator p
= parent
->dirty_old_rstat
.begin();
2312 p
!= parent
->dirty_old_rstat
.end();
2314 project_rstat_frag_to_inode(p
->second
.rstat
, p
->second
.accounted_rstat
, p
->second
.first
,
2315 p
->first
, pin
, true);//false);
2317 parent
->dirty_old_rstat
.clear();
2318 project_rstat_frag_to_inode(pf
->rstat
, pf
->accounted_rstat
, parent
->first
, CEPH_NOSNAP
, pin
, true);//false);
2320 pf
->accounted_rstat
= pf
->rstat
;
2322 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2323 if (pi
->rstat
.rbytes
!= pf
->rstat
.rbytes
) {
2324 mds
->clog
->error() << "unmatched rstat rbytes on single dirfrag "
2325 << parent
->dirfrag() << ", inode has " << pi
->rstat
2326 << ", dirfrag has " << pf
->rstat
;
2328 // trust the dirfrag for now
2329 pi
->rstat
= pf
->rstat
;
2331 assert(!"unmatched rstat rbytes" == g_conf
->mds_verify_scatter
);
2335 parent
->check_rstats();
2336 broadcast_quota_to_client(pin
);
2339 parent
= parentdn
->get_dir();
2341 do_parent_mtime
= false;
2346 // now, stick it in the blob
2348 assert(parent
->is_auth());
2349 blob
->add_dir_context(parent
);
2350 blob
->add_dir(parent
, true);
2351 for (list
<CInode
*>::iterator p
= lsi
.begin();
2355 journal_dirty_inode(mut
.get(), blob
, cur
);
2364 // ===================================
2369 * some handlers for master requests with slaves. we need to make
2370 * sure slaves journal commits before we forget we mastered them and
2371 * remove them from the uncommitted_masters map (used during recovery
2372 * to commit|abort slaves).
2374 struct C_MDC_CommittedMaster
: public MDCacheLogContext
{
2376 C_MDC_CommittedMaster(MDCache
*s
, metareqid_t r
) : MDCacheLogContext(s
), reqid(r
) {}
2377 void finish(int r
) override
{
2378 mdcache
->_logged_master_commit(reqid
);
2382 void MDCache::log_master_commit(metareqid_t reqid
)
2384 dout(10) << "log_master_commit " << reqid
<< dendl
;
2385 uncommitted_masters
[reqid
].committing
= true;
2386 mds
->mdlog
->start_submit_entry(new ECommitted(reqid
),
2387 new C_MDC_CommittedMaster(this, reqid
));
2390 void MDCache::_logged_master_commit(metareqid_t reqid
)
2392 dout(10) << "_logged_master_commit " << reqid
<< dendl
;
2393 assert(uncommitted_masters
.count(reqid
));
2394 uncommitted_masters
[reqid
].ls
->uncommitted_masters
.erase(reqid
);
2395 mds
->queue_waiters(uncommitted_masters
[reqid
].waiters
);
2396 uncommitted_masters
.erase(reqid
);
2401 void MDCache::committed_master_slave(metareqid_t r
, mds_rank_t from
)
2403 dout(10) << "committed_master_slave mds." << from
<< " on " << r
<< dendl
;
2404 assert(uncommitted_masters
.count(r
));
2405 uncommitted_masters
[r
].slaves
.erase(from
);
2406 if (!uncommitted_masters
[r
].recovering
&& uncommitted_masters
[r
].slaves
.empty())
2407 log_master_commit(r
);
2410 void MDCache::logged_master_update(metareqid_t reqid
)
2412 dout(10) << "logged_master_update " << reqid
<< dendl
;
2413 assert(uncommitted_masters
.count(reqid
));
2414 uncommitted_masters
[reqid
].safe
= true;
2415 if (pending_masters
.count(reqid
)) {
2416 pending_masters
.erase(reqid
);
2417 if (pending_masters
.empty())
2418 process_delayed_resolve();
2423 * Master may crash after receiving all slaves' commit acks, but before journalling
2424 * the final commit. Slaves may crash after journalling the slave commit, but before
2425 * sending commit ack to the master. Commit masters with no uncommitted slave when
2428 void MDCache::finish_committed_masters()
2430 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
2431 p
!= uncommitted_masters
.end();
2433 p
->second
.recovering
= false;
2434 if (!p
->second
.committing
&& p
->second
.slaves
.empty()) {
2435 dout(10) << "finish_committed_masters " << p
->first
<< dendl
;
2436 log_master_commit(p
->first
);
2442 * at end of resolve... we must journal a commit|abort for all slave
2443 * updates, before moving on.
2445 * this is so that the master can safely journal ECommitted on ops it
2446 * masters when it reaches up:active (all other recovering nodes must
2447 * complete resolve before that happens).
2449 struct C_MDC_SlaveCommit
: public MDCacheLogContext
{
2452 C_MDC_SlaveCommit(MDCache
*c
, int f
, metareqid_t r
) : MDCacheLogContext(c
), from(f
), reqid(r
) {}
2453 void finish(int r
) override
{
2454 mdcache
->_logged_slave_commit(from
, reqid
);
2458 void MDCache::_logged_slave_commit(mds_rank_t from
, metareqid_t reqid
)
2460 dout(10) << "_logged_slave_commit from mds." << from
<< " " << reqid
<< dendl
;
2463 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(reqid
, 0, MMDSSlaveRequest::OP_COMMITTED
);
2464 mds
->send_message_mds(req
, from
);
2472 // ====================================================================
2473 // import map, recovery
2475 void MDCache::_move_subtree_map_bound(dirfrag_t df
, dirfrag_t oldparent
, dirfrag_t newparent
,
2476 map
<dirfrag_t
,vector
<dirfrag_t
> >& subtrees
)
2478 if (subtrees
.count(oldparent
)) {
2479 vector
<dirfrag_t
>& v
= subtrees
[oldparent
];
2480 dout(10) << " removing " << df
<< " from " << oldparent
<< " bounds " << v
<< dendl
;
2481 for (vector
<dirfrag_t
>::iterator it
= v
.begin(); it
!= v
.end(); ++it
)
2487 if (subtrees
.count(newparent
)) {
2488 vector
<dirfrag_t
>& v
= subtrees
[newparent
];
2489 dout(10) << " adding " << df
<< " to " << newparent
<< " bounds " << v
<< dendl
;
2494 ESubtreeMap
*MDCache::create_subtree_map()
2496 dout(10) << "create_subtree_map " << num_subtrees() << " subtrees, "
2497 << num_subtrees_fullauth() << " fullauth"
2502 ESubtreeMap
*le
= new ESubtreeMap();
2503 mds
->mdlog
->_start_entry(le
);
2505 map
<dirfrag_t
, CDir
*> dirs_to_add
;
2508 CDir
* mydir
= myin
->get_dirfrag(frag_t());
2509 dirs_to_add
[mydir
->dirfrag()] = mydir
;
2512 // include all auth subtrees, and their bounds.
2513 // and a spanning tree to tie it to the root.
2514 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
2515 p
!= subtrees
.end();
2517 CDir
*dir
= p
->first
;
2519 // journal subtree as "ours" if we are
2522 // me, !me (may be importing and ambiguous!)
2526 if (dir
->get_dir_auth().first
!= mds
->get_nodeid())
2529 if (migrator
->is_ambiguous_import(dir
->dirfrag()) ||
2530 my_ambiguous_imports
.count(dir
->dirfrag())) {
2531 dout(15) << " ambig subtree " << *dir
<< dendl
;
2532 le
->ambiguous_subtrees
.insert(dir
->dirfrag());
2534 dout(15) << " subtree " << *dir
<< dendl
;
2537 dirs_to_add
[dir
->dirfrag()] = dir
;
2538 le
->subtrees
[dir
->dirfrag()].clear();
2542 for (set
<CDir
*>::iterator q
= p
->second
.begin();
2543 q
!= p
->second
.end();
2546 dout(15) << " subtree bound " << *bound
<< dendl
;
2547 dirs_to_add
[bound
->dirfrag()] = bound
;
2548 le
->subtrees
[dir
->dirfrag()].push_back(bound
->dirfrag());
2552 // apply projected renames
2553 for (map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.begin();
2554 p
!= projected_subtree_renames
.end();
2556 for (list
<pair
<CDir
*,CDir
*> >::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
2557 CInode
*diri
= p
->first
;
2558 CDir
*olddir
= q
->first
;
2559 CDir
*newdir
= q
->second
;
2560 dout(10) << " adjusting for projected rename of " << *diri
<< " to " << *newdir
<< dendl
;
2563 diri
->get_dirfrags(dfls
);
2564 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
2566 dout(10) << "dirfrag " << dir
->dirfrag() << " " << *dir
<< dendl
;
2567 CDir
*oldparent
= get_projected_subtree_root(olddir
);
2568 dout(10) << " old parent " << oldparent
->dirfrag() << " " << *oldparent
<< dendl
;
2569 CDir
*newparent
= get_projected_subtree_root(newdir
);
2570 dout(10) << " new parent " << newparent
->dirfrag() << " " << *newparent
<< dendl
;
2572 if (oldparent
== newparent
) {
2573 dout(10) << "parent unchanged for " << dir
->dirfrag() << " at "
2574 << oldparent
->dirfrag() << dendl
;
2578 if (dir
->is_subtree_root()) {
2579 if (le
->subtrees
.count(newparent
->dirfrag()) &&
2580 oldparent
->get_dir_auth() != newparent
->get_dir_auth())
2581 dirs_to_add
[dir
->dirfrag()] = dir
;
2582 // children are fine. change parent.
2583 _move_subtree_map_bound(dir
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2588 if (oldparent
->get_dir_auth() != newparent
->get_dir_auth()) {
2589 dout(10) << " creating subtree for " << dir
->dirfrag() << dendl
;
2590 // if oldparent is auth, subtree is mine; include it.
2591 if (le
->subtrees
.count(oldparent
->dirfrag())) {
2592 dirs_to_add
[dir
->dirfrag()] = dir
;
2593 le
->subtrees
[dir
->dirfrag()].clear();
2595 // if newparent is auth, subtree is a new bound
2596 if (le
->subtrees
.count(newparent
->dirfrag())) {
2597 dirs_to_add
[dir
->dirfrag()] = dir
;
2598 le
->subtrees
[newparent
->dirfrag()].push_back(dir
->dirfrag()); // newparent is auth; new bound
2603 // see if any old bounds move to the new parent.
2604 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
2605 p
!= subtrees
[oldparent
].end();
2608 if (dir
->contains(bound
->get_parent_dir()))
2609 _move_subtree_map_bound(bound
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2617 // simplify the journaled map. our in memory map may have more
2618 // subtrees than needed due to migrations that are just getting
2619 // started or just completing. but on replay, the "live" map will
2620 // be simple and we can do a straight comparison.
2621 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= le
->subtrees
.begin(); p
!= le
->subtrees
.end(); ++p
) {
2622 if (le
->ambiguous_subtrees
.count(p
->first
))
2625 while (i
< p
->second
.size()) {
2626 dirfrag_t b
= p
->second
[i
];
2627 if (le
->subtrees
.count(b
) &&
2628 le
->ambiguous_subtrees
.count(b
) == 0) {
2629 vector
<dirfrag_t
>& bb
= le
->subtrees
[b
];
2630 dout(10) << "simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2631 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2632 p
->second
.push_back(*r
);
2633 dirs_to_add
.erase(b
);
2634 le
->subtrees
.erase(b
);
2635 p
->second
.erase(p
->second
.begin() + i
);
2642 for (auto p
: dirs_to_add
) {
2643 CDir
*dir
= p
.second
;
2644 le
->metablob
.add_dir_context(dir
, EMetaBlob::TO_ROOT
);
2645 le
->metablob
.add_dir(dir
, false);
2648 dout(15) << " subtrees " << le
->subtrees
<< dendl
;
2649 dout(15) << " ambiguous_subtrees " << le
->ambiguous_subtrees
<< dendl
;
2651 //le->metablob.print(cout);
2652 le
->expire_pos
= mds
->mdlog
->journaler
->get_expire_pos();
2656 void MDCache::dump_resolve_status(Formatter
*f
) const
2658 f
->open_object_section("resolve_status");
2659 f
->dump_stream("resolve_gather") << resolve_gather
;
2660 f
->dump_stream("resolve_ack_gather") << resolve_gather
;
2664 void MDCache::resolve_start(MDSInternalContext
*resolve_done_
)
2666 dout(10) << "resolve_start" << dendl
;
2667 assert(!resolve_done
);
2668 resolve_done
.reset(resolve_done_
);
2670 if (mds
->mdsmap
->get_root() != mds
->get_nodeid()) {
2671 // if we don't have the root dir, adjust it to UNKNOWN. during
2672 // resolve we want mds0 to explicit claim the portion of it that
2673 // it owns, so that anything beyond its bounds get left as
2675 CDir
*rootdir
= root
->get_dirfrag(frag_t());
2677 adjust_subtree_auth(rootdir
, CDIR_AUTH_UNKNOWN
);
2679 resolve_gather
= recovery_set
;
2682 void MDCache::send_resolves()
2684 send_slave_resolves();
2685 if (!resolve_ack_gather
.empty()) {
2686 dout(10) << "send_resolves still waiting for resolve ack from ("
2687 << resolve_ack_gather
<< ")" << dendl
;
2690 if (!need_resolve_rollback
.empty()) {
2691 dout(10) << "send_resolves still waiting for rollback to commit on ("
2692 << need_resolve_rollback
<< ")" << dendl
;
2695 send_subtree_resolves();
2698 void MDCache::send_slave_resolves()
2700 dout(10) << "send_slave_resolves" << dendl
;
2702 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2704 if (mds
->is_resolve()) {
2705 for (map
<mds_rank_t
, map
<metareqid_t
, MDSlaveUpdate
*> >::iterator p
= uncommitted_slave_updates
.begin();
2706 p
!= uncommitted_slave_updates
.end();
2708 resolves
[p
->first
] = new MMDSResolve
;
2709 for (map
<metareqid_t
, MDSlaveUpdate
*>::iterator q
= p
->second
.begin();
2710 q
!= p
->second
.end();
2712 dout(10) << " including uncommitted " << q
->first
<< dendl
;
2713 resolves
[p
->first
]->add_slave_request(q
->first
, false);
2717 set
<mds_rank_t
> resolve_set
;
2718 mds
->mdsmap
->get_mds_set(resolve_set
, MDSMap::STATE_RESOLVE
);
2719 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2720 p
!= active_requests
.end();
2722 MDRequestRef
& mdr
= p
->second
;
2723 if (!mdr
->is_slave())
2725 if (!mdr
->slave_did_prepare() && !mdr
->committing
) {
2728 mds_rank_t master
= mdr
->slave_to_mds
;
2729 if (resolve_set
.count(master
) || is_ambiguous_slave_update(p
->first
, master
)) {
2730 dout(10) << " including uncommitted " << *mdr
<< dendl
;
2731 if (!resolves
.count(master
))
2732 resolves
[master
] = new MMDSResolve
;
2733 if (!mdr
->committing
&&
2734 mdr
->has_more() && mdr
->more()->is_inode_exporter
) {
2735 // re-send cap exports
2736 CInode
*in
= mdr
->more()->rename_inode
;
2737 map
<client_t
, Capability::Export
> cap_map
;
2738 in
->export_client_caps(cap_map
);
2740 ::encode(in
->ino(), bl
);
2741 ::encode(cap_map
, bl
);
2742 resolves
[master
]->add_slave_request(p
->first
, bl
);
2744 resolves
[master
]->add_slave_request(p
->first
, mdr
->committing
);
2750 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2751 p
!= resolves
.end();
2753 dout(10) << "sending slave resolve to mds." << p
->first
<< dendl
;
2754 mds
->send_message_mds(p
->second
, p
->first
);
2755 resolve_ack_gather
.insert(p
->first
);
2759 void MDCache::send_subtree_resolves()
2761 dout(10) << "send_subtree_resolves" << dendl
;
2763 if (migrator
->is_exporting() || migrator
->is_importing()) {
2764 dout(7) << "send_subtree_resolves waiting, imports/exports still in progress" << dendl
;
2765 migrator
->show_importing();
2766 migrator
->show_exporting();
2767 resolves_pending
= true;
2771 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2772 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
2773 p
!= recovery_set
.end();
2775 if (*p
== mds
->get_nodeid())
2777 if (mds
->is_resolve() || mds
->mdsmap
->is_resolve(*p
))
2778 resolves
[*p
] = new MMDSResolve
;
2781 map
<dirfrag_t
, vector
<dirfrag_t
> > my_subtrees
;
2782 map
<dirfrag_t
, vector
<dirfrag_t
> > my_ambig_imports
;
2785 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
2786 p
!= subtrees
.end();
2788 CDir
*dir
= p
->first
;
2790 // only our subtrees
2791 if (dir
->authority().first
!= mds
->get_nodeid())
2794 if (mds
->is_resolve() && my_ambiguous_imports
.count(dir
->dirfrag()))
2795 continue; // we'll add it below
2797 if (migrator
->is_ambiguous_import(dir
->dirfrag())) {
2798 // ambiguous (mid-import)
2800 get_subtree_bounds(dir
, bounds
);
2801 vector
<dirfrag_t
> dfls
;
2802 for (set
<CDir
*>::iterator q
= bounds
.begin(); q
!= bounds
.end(); ++q
)
2803 dfls
.push_back((*q
)->dirfrag());
2805 my_ambig_imports
[dir
->dirfrag()] = dfls
;
2806 dout(10) << " ambig " << dir
->dirfrag() << " " << dfls
<< dendl
;
2809 for (map
<mds_rank_t
, MMDSResolve
*>::iterator q
= resolves
.begin();
2810 q
!= resolves
.end();
2812 resolves
[q
->first
]->add_subtree(dir
->dirfrag());
2814 vector
<dirfrag_t
> dfls
;
2815 for (set
<CDir
*>::iterator q
= subtrees
[dir
].begin();
2816 q
!= subtrees
[dir
].end();
2819 dfls
.push_back(bound
->dirfrag());
2822 my_subtrees
[dir
->dirfrag()] = dfls
;
2823 dout(10) << " claim " << dir
->dirfrag() << " " << dfls
<< dendl
;
2828 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
2829 p
!= my_ambiguous_imports
.end();
2831 my_ambig_imports
[p
->first
] = p
->second
;
2832 dout(10) << " ambig " << p
->first
<< " " << p
->second
<< dendl
;
2835 // simplify the claimed subtree.
2836 for (auto p
= my_subtrees
.begin(); p
!= my_subtrees
.end(); ++p
) {
2838 while (i
< p
->second
.size()) {
2839 dirfrag_t b
= p
->second
[i
];
2840 if (my_subtrees
.count(b
)) {
2841 vector
<dirfrag_t
>& bb
= my_subtrees
[b
];
2842 dout(10) << " simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2843 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2844 p
->second
.push_back(*r
);
2845 my_subtrees
.erase(b
);
2846 p
->second
.erase(p
->second
.begin() + i
);
2854 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2855 p
!= resolves
.end();
2857 MMDSResolve
* m
= p
->second
;
2858 m
->subtrees
= my_subtrees
;
2859 m
->ambiguous_imports
= my_ambig_imports
;
2860 dout(10) << "sending subtee resolve to mds." << p
->first
<< dendl
;
2861 mds
->send_message_mds(m
, p
->first
);
2863 resolves_pending
= false;
2866 void MDCache::handle_mds_failure(mds_rank_t who
)
2868 dout(7) << "handle_mds_failure mds." << who
<< dendl
;
2870 dout(1) << "handle_mds_failure mds." << who
<< " : recovery peers are " << recovery_set
<< dendl
;
2872 resolve_gather
.insert(who
);
2873 discard_delayed_resolve(who
);
2874 ambiguous_slave_updates
.erase(who
);
2876 rejoin_gather
.insert(who
);
2877 rejoin_sent
.erase(who
); // i need to send another
2878 rejoin_ack_gather
.erase(who
); // i'll need/get another.
2880 dout(10) << " resolve_gather " << resolve_gather
<< dendl
;
2881 dout(10) << " resolve_ack_gather " << resolve_ack_gather
<< dendl
;
2882 dout(10) << " rejoin_sent " << rejoin_sent
<< dendl
;
2883 dout(10) << " rejoin_gather " << rejoin_gather
<< dendl
;
2884 dout(10) << " rejoin_ack_gather " << rejoin_ack_gather
<< dendl
;
2887 // tell the migrator too.
2888 migrator
->handle_mds_failure_or_stop(who
);
2890 // clean up any requests slave to/from this node
2891 list
<MDRequestRef
> finish
;
2892 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2893 p
!= active_requests
.end();
2895 MDRequestRef
& mdr
= p
->second
;
2896 // slave to the failed node?
2897 if (mdr
->slave_to_mds
== who
) {
2898 if (mdr
->slave_did_prepare()) {
2899 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2900 if (is_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
))
2901 remove_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2903 if (!mdr
->more()->waiting_on_slave
.empty()) {
2904 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2905 // will rollback, no need to wait
2906 if (mdr
->slave_request
) {
2907 mdr
->slave_request
->put();
2908 mdr
->slave_request
= 0;
2910 mdr
->more()->waiting_on_slave
.clear();
2912 } else if (!mdr
->committing
) {
2913 dout(10) << " slave request " << *mdr
<< " has no prepare, finishing up" << dendl
;
2914 if (mdr
->slave_request
|| mdr
->slave_rolling_back())
2915 mdr
->aborted
= true;
2917 finish
.push_back(mdr
);
2921 if (mdr
->is_slave() && mdr
->slave_did_prepare()) {
2922 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2923 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2924 dout(10) << " slave request " << *mdr
<< " no longer need rename notity ack from mds."
2926 mdr
->more()->waiting_on_slave
.erase(who
);
2927 if (mdr
->more()->waiting_on_slave
.empty() && mdr
->slave_request
)
2928 mds
->queue_waiter(new C_MDS_RetryRequest(this, mdr
));
2931 if (mdr
->more()->srcdn_auth_mds
== who
&&
2932 mds
->mdsmap
->is_clientreplay_or_active_or_stopping(mdr
->slave_to_mds
)) {
2933 // rename srcdn's auth mds failed, resolve even I'm a survivor.
2934 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2935 add_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2939 // failed node is slave?
2940 if (mdr
->is_master() && !mdr
->committing
) {
2941 if (mdr
->more()->srcdn_auth_mds
== who
) {
2942 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2943 << who
<< " to recover" << dendl
;
2944 assert(mdr
->more()->witnessed
.count(who
) == 0);
2945 if (mdr
->more()->is_ambiguous_auth
)
2946 mdr
->clear_ambiguous_auth();
2947 // rename srcdn's auth mds failed, all witnesses will rollback
2948 mdr
->more()->witnessed
.clear();
2949 pending_masters
.erase(p
->first
);
2952 if (mdr
->more()->witnessed
.count(who
)) {
2953 mds_rank_t srcdn_auth
= mdr
->more()->srcdn_auth_mds
;
2954 if (srcdn_auth
>= 0 && mdr
->more()->waiting_on_slave
.count(srcdn_auth
)) {
2955 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2956 << mdr
->more()->srcdn_auth_mds
<< " to reply" << dendl
;
2957 // waiting for the slave (rename srcdn's auth mds), delay sending resolve ack
2958 // until either the request is committing or the slave also fails.
2959 assert(mdr
->more()->waiting_on_slave
.size() == 1);
2960 pending_masters
.insert(p
->first
);
2962 dout(10) << " master request " << *mdr
<< " no longer witnessed by slave mds."
2963 << who
<< " to recover" << dendl
;
2964 if (srcdn_auth
>= 0)
2965 assert(mdr
->more()->witnessed
.count(srcdn_auth
) == 0);
2967 // discard this peer's prepare (if any)
2968 mdr
->more()->witnessed
.erase(who
);
2972 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2973 dout(10) << " master request " << *mdr
<< " waiting for slave mds." << who
2974 << " to recover" << dendl
;
2975 // retry request when peer recovers
2976 mdr
->more()->waiting_on_slave
.erase(who
);
2977 if (mdr
->more()->waiting_on_slave
.empty())
2978 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(this, mdr
));
2981 if (mdr
->locking
&& mdr
->locking_target_mds
== who
)
2982 mdr
->finish_locking(mdr
->locking
);
2986 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
2987 p
!= uncommitted_masters
.end();
2989 // The failed MDS may have already committed the slave update
2990 if (p
->second
.slaves
.count(who
)) {
2991 p
->second
.recovering
= true;
2992 p
->second
.slaves
.erase(who
);
2996 while (!finish
.empty()) {
2997 dout(10) << "cleaning up slave request " << *finish
.front() << dendl
;
2998 request_finish(finish
.front());
3002 kick_find_ino_peers(who
);
3003 kick_open_ino_peers(who
);
3005 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
3006 p
!= fragments
.end(); ) {
3007 dirfrag_t df
= p
->first
;
3008 fragment_info_t
& info
= p
->second
;
3010 if (info
.is_fragmenting())
3012 dout(10) << "cancelling fragment " << df
<< " bit " << info
.bits
<< dendl
;
3014 info
.dirs
.swap(dirs
);
3015 fragments
.erase(df
);
3016 fragment_unmark_unfreeze_dirs(dirs
);
3019 // MDCache::shutdown_export_strays() always exports strays to mds.0
3020 if (who
== mds_rank_t(0))
3021 shutdown_exported_strays
.clear();
3027 * handle_mds_recovery - called on another node's transition
3028 * from resolve -> active.
3030 void MDCache::handle_mds_recovery(mds_rank_t who
)
3032 dout(7) << "handle_mds_recovery mds." << who
<< dendl
;
3034 // exclude all discover waiters. kick_discovers() will do the job
3035 static const uint64_t i_mask
= CInode::WAIT_ANY_MASK
& ~CInode::WAIT_DIR
;
3036 static const uint64_t d_mask
= CDir::WAIT_ANY_MASK
& ~CDir::WAIT_DENTRY
;
3038 list
<MDSInternalContextBase
*> waiters
;
3040 // wake up any waiters in their subtrees
3041 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3042 p
!= subtrees
.end();
3044 CDir
*dir
= p
->first
;
3046 if (dir
->authority().first
!= who
||
3047 dir
->authority().second
== mds
->get_nodeid())
3049 assert(!dir
->is_auth());
3055 while (!q
.empty()) {
3056 CDir
*d
= q
.front();
3058 d
->take_waiting(d_mask
, waiters
);
3060 // inode waiters too
3061 for (CDir::map_t::iterator p
= d
->items
.begin();
3062 p
!= d
->items
.end();
3064 CDentry
*dn
= p
->second
;
3065 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3066 if (dnl
->is_primary()) {
3067 dnl
->get_inode()->take_waiting(i_mask
, waiters
);
3071 dnl
->get_inode()->get_dirfrags(ls
);
3072 for (list
<CDir
*>::iterator p
= ls
.begin();
3076 if (!subdir
->is_subtree_root())
3077 q
.push_back(subdir
);
3084 kick_open_ino_peers(who
);
3085 kick_find_ino_peers(who
);
3088 mds
->queue_waiters(waiters
);
3091 void MDCache::set_recovery_set(set
<mds_rank_t
>& s
)
3093 dout(7) << "set_recovery_set " << s
<< dendl
;
3099 * during resolve state, we share resolves to determine who
3100 * is authoritative for which trees. we expect to get an resolve
3101 * from _everyone_ in the recovery_set (the mds cluster at the time of
3102 * the first failure).
3104 * This functions puts the passed message before returning
3106 void MDCache::handle_resolve(MMDSResolve
*m
)
3108 dout(7) << "handle_resolve from " << m
->get_source() << dendl
;
3109 mds_rank_t from
= mds_rank_t(m
->get_source().num());
3111 if (mds
->get_state() < MDSMap::STATE_RESOLVE
) {
3112 if (mds
->get_want_state() == CEPH_MDS_STATE_RESOLVE
) {
3113 mds
->wait_for_resolve(new C_MDS_RetryMessage(mds
, m
));
3116 // wait until we reach the resolve stage!
3121 discard_delayed_resolve(from
);
3123 // ambiguous slave requests?
3124 if (!m
->slave_requests
.empty()) {
3125 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3126 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3127 if (uncommitted_masters
.count(p
->first
) && !uncommitted_masters
[p
->first
].safe
) {
3128 assert(!p
->second
.committing
);
3129 pending_masters
.insert(p
->first
);
3133 if (!pending_masters
.empty()) {
3134 dout(10) << " still have pending updates, delay processing slave resolve" << dendl
;
3135 delayed_resolve
[from
] = m
;
3140 MMDSResolveAck
*ack
= new MMDSResolveAck
;
3141 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3142 if (uncommitted_masters
.count(p
->first
)) { //mds->sessionmap.have_completed_request(p->first)) {
3144 if (p
->second
.committing
) {
3145 // already committing, waiting for the OP_COMMITTED slave reply
3146 dout(10) << " already committing slave request " << *p
<< " noop "<< dendl
;
3148 dout(10) << " ambiguous slave request " << *p
<< " will COMMIT" << dendl
;
3149 ack
->add_commit(p
->first
);
3151 uncommitted_masters
[p
->first
].slaves
.insert(from
); // wait for slave OP_COMMITTED before we log ECommitted
3153 if (p
->second
.inode_caps
.length() > 0) {
3154 // slave wants to export caps (rename)
3155 assert(mds
->is_resolve());
3158 map
<client_t
,Capability::Export
> cap_exports
;
3159 bufferlist::iterator q
= p
->second
.inode_caps
.begin();
3161 ::decode(cap_exports
, q
);
3163 assert(get_inode(ino
));
3165 for (map
<client_t
,Capability::Export
>::iterator q
= cap_exports
.begin();
3166 q
!= cap_exports
.end();
3168 Capability::Import
& im
= rejoin_imported_caps
[from
][ino
][q
->first
];
3169 im
.cap_id
= ++last_cap_id
; // assign a new cap ID
3171 im
.mseq
= q
->second
.mseq
;
3174 // will process these caps in rejoin stage
3175 rejoin_slave_exports
[ino
].first
= from
;
3176 rejoin_slave_exports
[ino
].second
.swap(cap_exports
);
3178 // send information of imported caps back to slave
3179 ::encode(rejoin_imported_caps
[from
][ino
], ack
->commit
[p
->first
]);
3183 dout(10) << " ambiguous slave request " << *p
<< " will ABORT" << dendl
;
3184 assert(!p
->second
.committing
);
3185 ack
->add_abort(p
->first
);
3188 mds
->send_message(ack
, m
->get_connection());
3193 if (!resolve_ack_gather
.empty() || !need_resolve_rollback
.empty()) {
3194 dout(10) << "delay processing subtree resolve" << dendl
;
3195 delayed_resolve
[from
] = m
;
3199 bool survivor
= false;
3200 // am i a surviving ambiguous importer?
3201 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3203 // check for any import success/failure (from this node)
3204 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
3205 while (p
!= my_ambiguous_imports
.end()) {
3206 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator next
= p
;
3208 CDir
*dir
= get_dirfrag(p
->first
);
3210 dout(10) << "checking ambiguous import " << *dir
<< dendl
;
3211 if (migrator
->is_importing(dir
->dirfrag()) &&
3212 migrator
->get_import_peer(dir
->dirfrag()) == from
) {
3213 assert(migrator
->get_import_state(dir
->dirfrag()) == Migrator::IMPORT_ACKING
);
3215 // check if sender claims the subtree
3216 bool claimed_by_sender
= false;
3217 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= m
->subtrees
.begin();
3218 q
!= m
->subtrees
.end();
3220 // an ambiguous import won't race with a refragmentation; it's appropriate to force here.
3221 CDir
*base
= get_force_dirfrag(q
->first
, false);
3222 if (!base
|| !base
->contains(dir
))
3223 continue; // base not dir or an ancestor of dir, clearly doesn't claim dir.
3227 get_force_dirfrag_bound_set(q
->second
, bounds
);
3228 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
3230 if (bound
->contains(dir
)) {
3231 inside
= false; // nope, bound is dir or parent of dir, not inside.
3236 claimed_by_sender
= true;
3239 my_ambiguous_imports
.erase(p
); // no longer ambiguous.
3240 if (claimed_by_sender
) {
3241 dout(7) << "ambiguous import failed on " << *dir
<< dendl
;
3242 migrator
->import_reverse(dir
);
3244 dout(7) << "ambiguous import succeeded on " << *dir
<< dendl
;
3245 migrator
->import_finish(dir
, true);
3252 // update my dir_auth values
3253 // need to do this on recoverying nodes _and_ bystanders (to resolve ambiguous
3254 // migrations between other nodes)
3255 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->subtrees
.begin();
3256 pi
!= m
->subtrees
.end();
3258 dout(10) << "peer claims " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3259 CDir
*dir
= get_force_dirfrag(pi
->first
, !survivor
);
3262 adjust_bounded_subtree_auth(dir
, pi
->second
, from
);
3263 try_subtree_merge(dir
);
3268 // note ambiguous imports too
3269 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->ambiguous_imports
.begin();
3270 pi
!= m
->ambiguous_imports
.end();
3272 dout(10) << "noting ambiguous import on " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3273 other_ambiguous_imports
[from
][pi
->first
].swap( pi
->second
);
3276 // did i get them all?
3277 resolve_gather
.erase(from
);
3279 maybe_resolve_finish();
3284 void MDCache::process_delayed_resolve()
3286 dout(10) << "process_delayed_resolve" << dendl
;
3287 map
<mds_rank_t
, MMDSResolve
*> tmp
;
3288 tmp
.swap(delayed_resolve
);
3289 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= tmp
.begin(); p
!= tmp
.end(); ++p
)
3290 handle_resolve(p
->second
);
3293 void MDCache::discard_delayed_resolve(mds_rank_t who
)
3295 if (delayed_resolve
.count(who
)) {
3296 delayed_resolve
[who
]->put();
3297 delayed_resolve
.erase(who
);
3301 void MDCache::maybe_resolve_finish()
3303 assert(resolve_ack_gather
.empty());
3304 assert(need_resolve_rollback
.empty());
3306 if (!resolve_gather
.empty()) {
3307 dout(10) << "maybe_resolve_finish still waiting for resolves ("
3308 << resolve_gather
<< ")" << dendl
;
3312 dout(10) << "maybe_resolve_finish got all resolves+resolve_acks, done." << dendl
;
3313 disambiguate_my_imports();
3314 finish_committed_masters();
3317 assert(mds
->is_resolve());
3318 trim_unlinked_inodes();
3319 recalc_auth_bits(false);
3320 resolve_done
.release()->complete(0);
3322 maybe_send_pending_rejoins();
3326 /* This functions puts the passed message before returning */
3327 void MDCache::handle_resolve_ack(MMDSResolveAck
*ack
)
3329 dout(10) << "handle_resolve_ack " << *ack
<< " from " << ack
->get_source() << dendl
;
3330 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
3332 if (!resolve_ack_gather
.count(from
) ||
3333 mds
->mdsmap
->get_state(from
) < MDSMap::STATE_RESOLVE
) {
3338 if (ambiguous_slave_updates
.count(from
)) {
3339 assert(mds
->mdsmap
->is_clientreplay_or_active_or_stopping(from
));
3340 assert(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3343 for (map
<metareqid_t
, bufferlist
>::iterator p
= ack
->commit
.begin();
3344 p
!= ack
->commit
.end();
3346 dout(10) << " commit on slave " << p
->first
<< dendl
;
3348 if (ambiguous_slave_updates
.count(from
)) {
3349 remove_ambiguous_slave_update(p
->first
, from
);
3353 if (mds
->is_resolve()) {
3355 MDSlaveUpdate
*su
= get_uncommitted_slave_update(p
->first
, from
);
3359 mds
->mdlog
->start_submit_entry(new ESlaveUpdate(mds
->mdlog
, "unknown", p
->first
, from
,
3360 ESlaveUpdate::OP_COMMIT
, su
->origop
),
3361 new C_MDC_SlaveCommit(this, from
, p
->first
));
3362 mds
->mdlog
->flush();
3364 finish_uncommitted_slave_update(p
->first
, from
);
3366 MDRequestRef mdr
= request_get(p
->first
);
3367 // information about master imported caps
3368 if (p
->second
.length() > 0)
3369 mdr
->more()->inode_import
.claim(p
->second
);
3371 assert(mdr
->slave_request
== 0); // shouldn't be doing anything!
3372 request_finish(mdr
);
3376 for (vector
<metareqid_t
>::iterator p
= ack
->abort
.begin();
3377 p
!= ack
->abort
.end();
3379 dout(10) << " abort on slave " << *p
<< dendl
;
3381 if (mds
->is_resolve()) {
3382 MDSlaveUpdate
*su
= get_uncommitted_slave_update(*p
, from
);
3385 // perform rollback (and journal a rollback entry)
3386 // note: this will hold up the resolve a bit, until the rollback entries journal.
3387 MDRequestRef null_ref
;
3388 switch (su
->origop
) {
3389 case ESlaveUpdate::LINK
:
3390 mds
->server
->do_link_rollback(su
->rollback
, from
, null_ref
);
3392 case ESlaveUpdate::RENAME
:
3393 mds
->server
->do_rename_rollback(su
->rollback
, from
, null_ref
);
3395 case ESlaveUpdate::RMDIR
:
3396 mds
->server
->do_rmdir_rollback(su
->rollback
, from
, null_ref
);
3402 MDRequestRef mdr
= request_get(*p
);
3403 mdr
->aborted
= true;
3404 if (mdr
->slave_request
) {
3405 if (mdr
->slave_did_prepare()) // journaling slave prepare ?
3406 add_rollback(*p
, from
);
3408 request_finish(mdr
);
3413 if (!ambiguous_slave_updates
.count(from
))
3414 resolve_ack_gather
.erase(from
);
3415 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3416 send_subtree_resolves();
3417 process_delayed_resolve();
3423 void MDCache::add_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
, MDSlaveUpdate
*su
)
3425 assert(uncommitted_slave_updates
[master
].count(reqid
) == 0);
3426 uncommitted_slave_updates
[master
][reqid
] = su
;
3427 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
)
3428 uncommitted_slave_rename_olddir
[*p
]++;
3429 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
)
3430 uncommitted_slave_unlink
[*p
]++;
3433 void MDCache::finish_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3435 assert(uncommitted_slave_updates
[master
].count(reqid
));
3436 MDSlaveUpdate
* su
= uncommitted_slave_updates
[master
][reqid
];
3438 uncommitted_slave_updates
[master
].erase(reqid
);
3439 if (uncommitted_slave_updates
[master
].empty())
3440 uncommitted_slave_updates
.erase(master
);
3441 // discard the non-auth subtree we renamed out of
3442 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
) {
3444 map
<CInode
*, int>::iterator it
= uncommitted_slave_rename_olddir
.find(diri
);
3445 assert(it
!= uncommitted_slave_rename_olddir
.end());
3447 if (it
->second
== 0) {
3448 uncommitted_slave_rename_olddir
.erase(it
);
3450 diri
->get_dirfrags(ls
);
3451 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
3452 CDir
*root
= get_subtree_root(*q
);
3453 if (root
->get_dir_auth() == CDIR_AUTH_UNDEF
) {
3454 try_trim_non_auth_subtree(root
);
3460 assert(it
->second
> 0);
3462 // removed the inodes that were unlinked by slave update
3463 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
) {
3465 map
<CInode
*, int>::iterator it
= uncommitted_slave_unlink
.find(in
);
3466 assert(it
!= uncommitted_slave_unlink
.end());
3468 if (it
->second
== 0) {
3469 uncommitted_slave_unlink
.erase(it
);
3470 if (!in
->get_projected_parent_dn())
3471 mds
->mdcache
->remove_inode_recursive(in
);
3473 assert(it
->second
> 0);
3478 MDSlaveUpdate
* MDCache::get_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3481 MDSlaveUpdate
* su
= NULL
;
3482 if (uncommitted_slave_updates
.count(master
) &&
3483 uncommitted_slave_updates
[master
].count(reqid
)) {
3484 su
= uncommitted_slave_updates
[master
][reqid
];
3490 void MDCache::finish_rollback(metareqid_t reqid
) {
3491 assert(need_resolve_rollback
.count(reqid
));
3492 if (mds
->is_resolve())
3493 finish_uncommitted_slave_update(reqid
, need_resolve_rollback
[reqid
]);
3494 need_resolve_rollback
.erase(reqid
);
3495 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3496 send_subtree_resolves();
3497 process_delayed_resolve();
3501 void MDCache::disambiguate_other_imports()
3503 dout(10) << "disambiguate_other_imports" << dendl
;
3505 bool recovering
= !(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3506 // other nodes' ambiguous imports
3507 for (map
<mds_rank_t
, map
<dirfrag_t
, vector
<dirfrag_t
> > >::iterator p
= other_ambiguous_imports
.begin();
3508 p
!= other_ambiguous_imports
.end();
3510 mds_rank_t who
= p
->first
;
3511 dout(10) << "ambiguous imports for mds." << who
<< dendl
;
3513 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= p
->second
.begin();
3514 q
!= p
->second
.end();
3516 dout(10) << " ambiguous import " << q
->first
<< " bounds " << q
->second
<< dendl
;
3517 // an ambiguous import will not race with a refragmentation; it's appropriate to force here.
3518 CDir
*dir
= get_force_dirfrag(q
->first
, recovering
);
3521 if (dir
->is_ambiguous_auth() || // works for me_ambig or if i am a surviving bystander
3522 dir
->authority() == CDIR_AUTH_UNDEF
) { // resolving
3523 dout(10) << " mds." << who
<< " did import " << *dir
<< dendl
;
3524 adjust_bounded_subtree_auth(dir
, q
->second
, who
);
3525 try_subtree_merge(dir
);
3527 dout(10) << " mds." << who
<< " did not import " << *dir
<< dendl
;
3531 other_ambiguous_imports
.clear();
3534 void MDCache::disambiguate_my_imports()
3536 dout(10) << "disambiguate_my_imports" << dendl
;
3538 if (!mds
->is_resolve()) {
3539 assert(my_ambiguous_imports
.empty());
3543 disambiguate_other_imports();
3545 // my ambiguous imports
3546 mds_authority_t
me_ambig(mds
->get_nodeid(), mds
->get_nodeid());
3547 while (!my_ambiguous_imports
.empty()) {
3548 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= my_ambiguous_imports
.begin();
3550 CDir
*dir
= get_dirfrag(q
->first
);
3553 if (dir
->authority() != me_ambig
) {
3554 dout(10) << "ambiguous import auth known, must not be me " << *dir
<< dendl
;
3555 cancel_ambiguous_import(dir
);
3557 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, false));
3559 // subtree may have been swallowed by another node claiming dir
3561 CDir
*root
= get_subtree_root(dir
);
3563 dout(10) << " subtree root is " << *root
<< dendl
;
3564 assert(root
->dir_auth
.first
!= mds
->get_nodeid()); // no us!
3565 try_trim_non_auth_subtree(root
);
3567 dout(10) << "ambiguous import auth unclaimed, must be me " << *dir
<< dendl
;
3568 finish_ambiguous_import(q
->first
);
3569 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, true));
3572 assert(my_ambiguous_imports
.empty());
3573 mds
->mdlog
->flush();
3575 // verify all my subtrees are unambiguous!
3576 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3577 p
!= subtrees
.end();
3579 CDir
*dir
= p
->first
;
3580 if (dir
->is_ambiguous_dir_auth()) {
3581 dout(0) << "disambiguate_imports uh oh, dir_auth is still ambiguous for " << *dir
<< dendl
;
3583 assert(!dir
->is_ambiguous_dir_auth());
3590 void MDCache::add_ambiguous_import(dirfrag_t base
, const vector
<dirfrag_t
>& bounds
)
3592 assert(my_ambiguous_imports
.count(base
) == 0);
3593 my_ambiguous_imports
[base
] = bounds
;
3597 void MDCache::add_ambiguous_import(CDir
*base
, const set
<CDir
*>& bounds
)
3600 vector
<dirfrag_t
> binos
;
3601 for (set
<CDir
*>::iterator p
= bounds
.begin();
3604 binos
.push_back((*p
)->dirfrag());
3606 // note: this can get called twice if the exporter fails during recovery
3607 if (my_ambiguous_imports
.count(base
->dirfrag()))
3608 my_ambiguous_imports
.erase(base
->dirfrag());
3610 add_ambiguous_import(base
->dirfrag(), binos
);
3613 void MDCache::cancel_ambiguous_import(CDir
*dir
)
3615 dirfrag_t df
= dir
->dirfrag();
3616 assert(my_ambiguous_imports
.count(df
));
3617 dout(10) << "cancel_ambiguous_import " << df
3618 << " bounds " << my_ambiguous_imports
[df
]
3621 my_ambiguous_imports
.erase(df
);
3624 void MDCache::finish_ambiguous_import(dirfrag_t df
)
3626 assert(my_ambiguous_imports
.count(df
));
3627 vector
<dirfrag_t
> bounds
;
3628 bounds
.swap(my_ambiguous_imports
[df
]);
3629 my_ambiguous_imports
.erase(df
);
3631 dout(10) << "finish_ambiguous_import " << df
3632 << " bounds " << bounds
3634 CDir
*dir
= get_dirfrag(df
);
3637 // adjust dir_auth, import maps
3638 adjust_bounded_subtree_auth(dir
, bounds
, mds
->get_nodeid());
3639 try_subtree_merge(dir
);
3642 void MDCache::remove_inode_recursive(CInode
*in
)
3644 dout(10) << "remove_inode_recursive " << *in
<< dendl
;
3646 in
->get_dirfrags(ls
);
3647 list
<CDir
*>::iterator p
= ls
.begin();
3648 while (p
!= ls
.end()) {
3649 CDir
*subdir
= *p
++;
3651 dout(10) << " removing dirfrag " << subdir
<< dendl
;
3652 CDir::map_t::iterator q
= subdir
->items
.begin();
3653 while (q
!= subdir
->items
.end()) {
3654 CDentry
*dn
= q
->second
;
3656 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3657 if (dnl
->is_primary()) {
3658 CInode
*tin
= dnl
->get_inode();
3659 subdir
->unlink_inode(dn
);
3660 remove_inode_recursive(tin
);
3662 subdir
->remove_dentry(dn
);
3665 if (subdir
->is_subtree_root())
3666 remove_subtree(subdir
);
3667 in
->close_dirfrag(subdir
->dirfrag().frag
);
3672 bool MDCache::expire_recursive(
3674 map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
3676 assert(!in
->is_auth());
3678 dout(10) << __func__
<< ":" << *in
<< dendl
;
3680 // Recurse into any dirfrags beneath this inode
3682 in
->get_dirfrags(ls
);
3683 for (auto subdir
: ls
) {
3684 if (!in
->is_mdsdir() && subdir
->is_subtree_root()) {
3685 dout(10) << __func__
<< ": stray still has subtree " << *in
<< dendl
;
3689 for (auto &it
: subdir
->items
) {
3690 CDentry
*dn
= it
.second
;
3691 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3692 if (dnl
->is_primary()) {
3693 CInode
*tin
= dnl
->get_inode();
3695 /* Remote strays with linkage (i.e. hardlinks) should not be
3696 * expired, because they may be the target of
3697 * a rename() as the owning MDS shuts down */
3698 if (!tin
->is_stray() && tin
->inode
.nlink
) {
3699 dout(10) << __func__
<< ": stray still has linkage " << *tin
<< dendl
;
3703 const bool abort
= expire_recursive(tin
, expiremap
);
3708 if (dn
->lru_is_expireable()) {
3709 trim_dentry(dn
, expiremap
);
3711 dout(10) << __func__
<< ": stray dn is not expireable " << *dn
<< dendl
;
3720 void MDCache::trim_unlinked_inodes()
3722 dout(7) << "trim_unlinked_inodes" << dendl
;
3724 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
3725 p
!= inode_map
.end();
3727 CInode
*in
= p
->second
;
3728 if (in
->get_parent_dn() == NULL
&& !in
->is_base()) {
3729 dout(7) << " will trim from " << *in
<< dendl
;
3733 for (list
<CInode
*>::iterator p
= q
.begin(); p
!= q
.end(); ++p
)
3734 remove_inode_recursive(*p
);
3737 /** recalc_auth_bits()
3738 * once subtree auth is disambiguated, we need to adjust all the
3739 * auth and dirty bits in our cache before moving on.
3741 void MDCache::recalc_auth_bits(bool replay
)
3743 dout(7) << "recalc_auth_bits " << (replay
? "(replay)" : "") << dendl
;
3746 root
->inode_auth
.first
= mds
->mdsmap
->get_root();
3747 bool auth
= mds
->get_nodeid() == root
->inode_auth
.first
;
3749 root
->state_set(CInode::STATE_AUTH
);
3751 root
->state_clear(CInode::STATE_AUTH
);
3753 root
->state_set(CInode::STATE_REJOINING
);
3757 set
<CInode
*> subtree_inodes
;
3758 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3759 p
!= subtrees
.end();
3761 if (p
->first
->dir_auth
.first
== mds
->get_nodeid())
3762 subtree_inodes
.insert(p
->first
->inode
);
3765 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3766 p
!= subtrees
.end();
3768 if (p
->first
->inode
->is_mdsdir()) {
3769 CInode
*in
= p
->first
->inode
;
3770 bool auth
= in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid());
3772 in
->state_set(CInode::STATE_AUTH
);
3774 in
->state_clear(CInode::STATE_AUTH
);
3776 in
->state_set(CInode::STATE_REJOINING
);
3780 list
<CDir
*> dfq
; // dirfrag queue
3781 dfq
.push_back(p
->first
);
3783 bool auth
= p
->first
->authority().first
== mds
->get_nodeid();
3784 dout(10) << " subtree auth=" << auth
<< " for " << *p
->first
<< dendl
;
3786 while (!dfq
.empty()) {
3787 CDir
*dir
= dfq
.front();
3792 dir
->state_set(CDir::STATE_AUTH
);
3794 dir
->state_clear(CDir::STATE_AUTH
);
3796 // close empty non-auth dirfrag
3797 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0) {
3798 dir
->inode
->close_dirfrag(dir
->get_frag());
3801 dir
->state_set(CDir::STATE_REJOINING
);
3802 dir
->state_clear(CDir::STATE_COMPLETE
);
3803 if (dir
->is_dirty())
3808 // dentries in this dir
3809 for (CDir::map_t::iterator q
= dir
->items
.begin();
3810 q
!= dir
->items
.end();
3813 CDentry
*dn
= q
->second
;
3814 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3816 dn
->state_set(CDentry::STATE_AUTH
);
3818 dn
->state_clear(CDentry::STATE_AUTH
);
3820 dn
->state_set(CDentry::STATE_REJOINING
);
3826 if (dnl
->is_primary()) {
3828 CInode
*in
= dnl
->get_inode();
3830 in
->state_set(CInode::STATE_AUTH
);
3832 in
->state_clear(CInode::STATE_AUTH
);
3834 in
->state_set(CInode::STATE_REJOINING
);
3837 if (in
->is_dirty_parent())
3838 in
->clear_dirty_parent();
3839 // avoid touching scatterlocks for our subtree roots!
3840 if (subtree_inodes
.count(in
) == 0)
3841 in
->clear_scatter_dirty();
3846 in
->get_nested_dirfrags(dfq
);
3858 // ===========================================================================
3862 * notes on scatterlock recovery:
3864 * - recovering inode replica sends scatterlock data for any subtree
3865 * roots (the only ones that are possibly dirty).
3867 * - surviving auth incorporates any provided scatterlock data. any
3868 * pending gathers are then finished, as with the other lock types.
3870 * that takes care of surviving auth + (recovering replica)*.
3872 * - surviving replica sends strong_inode, which includes current
3873 * scatterlock state, AND any dirty scatterlock data. this
3874 * provides the recovering auth with everything it might need.
3876 * - recovering auth must pick initial scatterlock state based on
3877 * (weak|strong) rejoins.
3878 * - always assimilate scatterlock data (it can't hurt)
3879 * - any surviving replica in SCATTER state -> SCATTER. otherwise, SYNC.
3880 * - include base inode in ack for all inodes that saw scatterlock content
3882 * also, for scatter gather,
3884 * - auth increments {frag,r}stat.version on completion of any gather.
3886 * - auth incorporates changes in a gather _only_ if the version
3889 * - replica discards changes any time the scatterlock syncs, and
3893 void MDCache::dump_rejoin_status(Formatter
*f
) const
3895 f
->open_object_section("rejoin_status");
3896 f
->dump_stream("rejoin_gather") << rejoin_gather
;
3897 f
->dump_stream("rejoin_ack_gather") << rejoin_ack_gather
;
3898 f
->dump_unsigned("num_opening_inodes", cap_imports_num_opening
);
3902 void MDCache::rejoin_start(MDSInternalContext
*rejoin_done_
)
3904 dout(10) << "rejoin_start" << dendl
;
3905 assert(!rejoin_done
);
3906 rejoin_done
.reset(rejoin_done_
);
3908 rejoin_gather
= recovery_set
;
3909 // need finish opening cap inodes before sending cache rejoins
3910 rejoin_gather
.insert(mds
->get_nodeid());
3911 process_imported_caps();
3917 * this initiates rejoin. it shoudl be called before we get any
3918 * rejoin or rejoin_ack messages (or else mdsmap distribution is broken).
3920 * we start out by sending rejoins to everyone in the recovery set.
3922 * if we are rejoin, send for all regions in our cache.
3923 * if we are active|stopping, send only to nodes that are are rejoining.
3925 void MDCache::rejoin_send_rejoins()
3927 dout(10) << "rejoin_send_rejoins with recovery_set " << recovery_set
<< dendl
;
3929 if (rejoin_gather
.count(mds
->get_nodeid())) {
3930 dout(7) << "rejoin_send_rejoins still processing imported caps, delaying" << dendl
;
3931 rejoins_pending
= true;
3934 if (!resolve_gather
.empty()) {
3935 dout(7) << "rejoin_send_rejoins still waiting for resolves ("
3936 << resolve_gather
<< ")" << dendl
;
3937 rejoins_pending
= true;
3941 assert(!migrator
->is_importing());
3942 assert(!migrator
->is_exporting());
3944 if (!mds
->is_rejoin()) {
3945 disambiguate_other_imports();
3948 map
<mds_rank_t
, MMDSCacheRejoin
*> rejoins
;
3951 // if i am rejoining, send a rejoin to everyone.
3952 // otherwise, just send to others who are rejoining.
3953 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
3954 p
!= recovery_set
.end();
3956 if (*p
== mds
->get_nodeid()) continue; // nothing to myself!
3957 if (rejoin_sent
.count(*p
)) continue; // already sent a rejoin to this node!
3958 if (mds
->is_rejoin())
3959 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_WEAK
);
3960 else if (mds
->mdsmap
->is_rejoin(*p
))
3961 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_STRONG
);
3964 if (mds
->is_rejoin()) {
3965 map
<client_t
, set
<mds_rank_t
> > client_exports
;
3966 for (auto p
= cap_exports
.begin(); p
!= cap_exports
.end(); ++p
) {
3967 assert(cap_export_targets
.count(p
->first
));
3968 mds_rank_t target
= cap_export_targets
[p
->first
];
3969 if (rejoins
.count(target
) == 0)
3971 rejoins
[target
]->cap_exports
[p
->first
] = p
->second
;
3972 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3973 client_exports
[q
->first
].insert(target
);
3975 for (map
<client_t
, set
<mds_rank_t
> >::iterator p
= client_exports
.begin();
3976 p
!= client_exports
.end();
3978 entity_inst_t inst
= mds
->sessionmap
.get_inst(entity_name_t::CLIENT(p
->first
.v
));
3979 for (set
<mds_rank_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3980 rejoins
[*q
]->client_map
[p
->first
] = inst
;
3985 // check all subtrees
3986 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
3987 p
!= subtrees
.end();
3989 CDir
*dir
= p
->first
;
3990 assert(dir
->is_subtree_root());
3991 if (dir
->is_ambiguous_dir_auth()) {
3992 // exporter is recovering, importer is survivor.
3993 assert(rejoins
.count(dir
->authority().first
));
3994 assert(!rejoins
.count(dir
->authority().second
));
4000 continue; // skip my own regions!
4002 mds_rank_t auth
= dir
->get_dir_auth().first
;
4004 if (rejoins
.count(auth
) == 0)
4005 continue; // don't care about this node's subtrees
4007 rejoin_walk(dir
, rejoins
[auth
]);
4010 // rejoin root inodes, too
4011 for (map
<mds_rank_t
, MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4014 if (mds
->is_rejoin()) {
4016 if (p
->first
== 0 && root
) {
4017 p
->second
->add_weak_inode(root
->vino());
4018 if (root
->is_dirty_scattered()) {
4019 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4020 p
->second
->add_scatterlock_state(root
);
4023 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4025 p
->second
->add_weak_inode(in
->vino());
4029 if (p
->first
== 0 && root
) {
4030 p
->second
->add_strong_inode(root
->vino(),
4031 root
->get_replica_nonce(),
4032 root
->get_caps_wanted(),
4033 root
->filelock
.get_state(),
4034 root
->nestlock
.get_state(),
4035 root
->dirfragtreelock
.get_state());
4036 root
->state_set(CInode::STATE_REJOINING
);
4037 if (root
->is_dirty_scattered()) {
4038 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4039 p
->second
->add_scatterlock_state(root
);
4043 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4044 p
->second
->add_strong_inode(in
->vino(),
4045 in
->get_replica_nonce(),
4046 in
->get_caps_wanted(),
4047 in
->filelock
.get_state(),
4048 in
->nestlock
.get_state(),
4049 in
->dirfragtreelock
.get_state());
4050 in
->state_set(CInode::STATE_REJOINING
);
4055 if (!mds
->is_rejoin()) {
4056 // i am survivor. send strong rejoin.
4057 // note request remote_auth_pins, xlocks
4058 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
4059 p
!= active_requests
.end();
4061 MDRequestRef
& mdr
= p
->second
;
4062 if (mdr
->is_slave())
4065 for (map
<MDSCacheObject
*,mds_rank_t
>::iterator q
= mdr
->remote_auth_pins
.begin();
4066 q
!= mdr
->remote_auth_pins
.end();
4068 if (!q
->first
->is_auth()) {
4069 assert(q
->second
== q
->first
->authority().first
);
4070 if (rejoins
.count(q
->second
) == 0) continue;
4071 MMDSCacheRejoin
*rejoin
= rejoins
[q
->second
];
4073 dout(15) << " " << *mdr
<< " authpin on " << *q
->first
<< dendl
;
4074 MDSCacheObjectInfo i
;
4075 q
->first
->set_object_info(i
);
4077 rejoin
->add_inode_authpin(vinodeno_t(i
.ino
, i
.snapid
), mdr
->reqid
, mdr
->attempt
);
4079 rejoin
->add_dentry_authpin(i
.dirfrag
, i
.dname
, i
.snapid
, mdr
->reqid
, mdr
->attempt
);
4081 if (mdr
->has_more() && mdr
->more()->is_remote_frozen_authpin
&&
4082 mdr
->more()->rename_inode
== q
->first
)
4083 rejoin
->add_inode_frozen_authpin(vinodeno_t(i
.ino
, i
.snapid
),
4084 mdr
->reqid
, mdr
->attempt
);
4088 for (set
<SimpleLock
*>::iterator q
= mdr
->xlocks
.begin();
4089 q
!= mdr
->xlocks
.end();
4091 if (!(*q
)->get_parent()->is_auth()) {
4092 mds_rank_t who
= (*q
)->get_parent()->authority().first
;
4093 if (rejoins
.count(who
) == 0) continue;
4094 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4096 dout(15) << " " << *mdr
<< " xlock on " << **q
<< " " << *(*q
)->get_parent() << dendl
;
4097 MDSCacheObjectInfo i
;
4098 (*q
)->get_parent()->set_object_info(i
);
4100 rejoin
->add_inode_xlock(vinodeno_t(i
.ino
, i
.snapid
), (*q
)->get_type(),
4101 mdr
->reqid
, mdr
->attempt
);
4103 rejoin
->add_dentry_xlock(i
.dirfrag
, i
.dname
, i
.snapid
,
4104 mdr
->reqid
, mdr
->attempt
);
4108 for (map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
4109 q
!= mdr
->remote_wrlocks
.end();
4111 mds_rank_t who
= q
->second
;
4112 if (rejoins
.count(who
) == 0) continue;
4113 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4115 dout(15) << " " << *mdr
<< " wrlock on " << q
->second
4116 << " " << q
->first
->get_parent() << dendl
;
4117 MDSCacheObjectInfo i
;
4118 q
->first
->get_parent()->set_object_info(i
);
4120 rejoin
->add_inode_wrlock(vinodeno_t(i
.ino
, i
.snapid
), q
->first
->get_type(),
4121 mdr
->reqid
, mdr
->attempt
);
4126 // send the messages
4127 for (map
<mds_rank_t
,MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4130 assert(rejoin_sent
.count(p
->first
) == 0);
4131 assert(rejoin_ack_gather
.count(p
->first
) == 0);
4132 rejoin_sent
.insert(p
->first
);
4133 rejoin_ack_gather
.insert(p
->first
);
4134 mds
->send_message_mds(p
->second
, p
->first
);
4136 rejoin_ack_gather
.insert(mds
->get_nodeid()); // we need to complete rejoin_gather_finish, too
4137 rejoins_pending
= false;
4140 if (mds
->is_rejoin() && rejoins
.empty()) {
4141 dout(10) << "nothing to rejoin" << dendl
;
4142 rejoin_gather_finish();
4148 * rejoin_walk - build rejoin declarations for a subtree
4150 * @param dir subtree root
4151 * @param rejoin rejoin message
4153 * from a rejoining node:
4155 * weak dentries (w/ connectivity)
4157 * from a surviving node:
4159 * strong dentries (no connectivity!)
4162 void MDCache::rejoin_walk(CDir
*dir
, MMDSCacheRejoin
*rejoin
)
4164 dout(10) << "rejoin_walk " << *dir
<< dendl
;
4166 list
<CDir
*> nested
; // finish this dir, then do nested items
4168 if (mds
->is_rejoin()) {
4170 rejoin
->add_weak_dirfrag(dir
->dirfrag());
4171 for (CDir::map_t::iterator p
= dir
->items
.begin();
4172 p
!= dir
->items
.end();
4174 CDentry
*dn
= p
->second
;
4175 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4176 dout(15) << " add_weak_primary_dentry " << *dn
<< dendl
;
4177 assert(dnl
->is_primary());
4178 CInode
*in
= dnl
->get_inode();
4179 assert(dnl
->get_inode()->is_dir());
4180 rejoin
->add_weak_primary_dentry(dir
->ino(), dn
->name
.c_str(), dn
->first
, dn
->last
, in
->ino());
4181 in
->get_nested_dirfrags(nested
);
4182 if (in
->is_dirty_scattered()) {
4183 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4184 rejoin
->add_scatterlock_state(in
);
4189 dout(15) << " add_strong_dirfrag " << *dir
<< dendl
;
4190 rejoin
->add_strong_dirfrag(dir
->dirfrag(), dir
->get_replica_nonce(), dir
->get_dir_rep());
4191 dir
->state_set(CDir::STATE_REJOINING
);
4193 for (CDir::map_t::iterator p
= dir
->items
.begin();
4194 p
!= dir
->items
.end();
4196 CDentry
*dn
= p
->second
;
4197 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4198 dout(15) << " add_strong_dentry " << *dn
<< dendl
;
4199 rejoin
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
4200 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
4201 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
4202 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
4203 dn
->get_replica_nonce(),
4204 dn
->lock
.get_state());
4205 dn
->state_set(CDentry::STATE_REJOINING
);
4206 if (dnl
->is_primary()) {
4207 CInode
*in
= dnl
->get_inode();
4208 dout(15) << " add_strong_inode " << *in
<< dendl
;
4209 rejoin
->add_strong_inode(in
->vino(),
4210 in
->get_replica_nonce(),
4211 in
->get_caps_wanted(),
4212 in
->filelock
.get_state(),
4213 in
->nestlock
.get_state(),
4214 in
->dirfragtreelock
.get_state());
4215 in
->state_set(CInode::STATE_REJOINING
);
4216 in
->get_nested_dirfrags(nested
);
4217 if (in
->is_dirty_scattered()) {
4218 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4219 rejoin
->add_scatterlock_state(in
);
4225 // recurse into nested dirs
4226 for (list
<CDir
*>::iterator p
= nested
.begin();
4229 rejoin_walk(*p
, rejoin
);
4235 * - reply with the lockstate
4237 * if i am active|stopping,
4238 * - remove source from replica list for everything not referenced here.
4239 * This function puts the passed message before returning.
4241 void MDCache::handle_cache_rejoin(MMDSCacheRejoin
*m
)
4243 dout(7) << "handle_cache_rejoin " << *m
<< " from " << m
->get_source()
4244 << " (" << m
->get_payload().length() << " bytes)"
4248 case MMDSCacheRejoin::OP_WEAK
:
4249 handle_cache_rejoin_weak(m
);
4251 case MMDSCacheRejoin::OP_STRONG
:
4252 handle_cache_rejoin_strong(m
);
4254 case MMDSCacheRejoin::OP_ACK
:
4255 handle_cache_rejoin_ack(m
);
4266 * handle_cache_rejoin_weak
4269 * - is recovering from their journal.
4270 * - may have incorrect (out of date) inode contents
4271 * - will include weak dirfrag if sender is dirfrag auth and parent inode auth is recipient
4273 * if the sender didn't trim_non_auth(), they
4274 * - may have incorrect (out of date) dentry/inode linkage
4275 * - may have deleted/purged inodes
4276 * and i may have to go to disk to get accurate inode contents. yuck.
4277 * This functions DOES NOT put the passed message before returning
4279 void MDCache::handle_cache_rejoin_weak(MMDSCacheRejoin
*weak
)
4281 mds_rank_t from
= mds_rank_t(weak
->get_source().num());
4283 // possible response(s)
4284 MMDSCacheRejoin
*ack
= 0; // if survivor
4285 set
<vinodeno_t
> acked_inodes
; // if survivor
4286 set
<SimpleLock
*> gather_locks
; // if survivor
4287 bool survivor
= false; // am i a survivor?
4289 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
4291 dout(10) << "i am a surivivor, and will ack immediately" << dendl
;
4292 ack
= new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
4294 map
<inodeno_t
,map
<client_t
,Capability::Import
> > imported_caps
;
4296 // check cap exports
4297 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4298 CInode
*in
= get_inode(p
->first
);
4299 assert(!in
|| in
->is_auth());
4300 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4301 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< " on " << *in
<< dendl
;
4302 Capability
*cap
= rejoin_import_cap(in
, q
->first
, q
->second
, from
);
4303 Capability::Import
& im
= imported_caps
[p
->first
][q
->first
];
4305 im
.cap_id
= cap
->get_cap_id();
4306 im
.issue_seq
= cap
->get_last_seq();
4307 im
.mseq
= cap
->get_mseq();
4312 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
, true);
4315 ::encode(imported_caps
, ack
->imported_caps
);
4317 assert(mds
->is_rejoin());
4319 // we may have already received a strong rejoin from the sender.
4320 rejoin_scour_survivor_replicas(from
, NULL
, acked_inodes
, gather_locks
);
4321 assert(gather_locks
.empty());
4323 // check cap exports.
4324 rejoin_client_map
.insert(weak
->client_map
.begin(), weak
->client_map
.end());
4326 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4327 CInode
*in
= get_inode(p
->first
);
4328 assert(in
&& in
->is_auth());
4330 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4331 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< dendl
;
4332 cap_imports
[p
->first
][q
->first
][from
] = q
->second
;
4337 // assimilate any potentially dirty scatterlock state
4338 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4339 p
!= weak
->inode_scatterlocks
.end();
4341 CInode
*in
= get_inode(p
->first
);
4343 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4344 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4345 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4347 rejoin_potential_updated_scatterlocks
.insert(in
);
4350 // recovering peer may send incorrect dirfrags here. we need to
4351 // infer which dirfrag they meant. the ack will include a
4352 // strong_dirfrag that will set them straight on the fragmentation.
4355 set
<CDir
*> dirs_to_share
;
4356 for (set
<dirfrag_t
>::iterator p
= weak
->weak_dirfrags
.begin();
4357 p
!= weak
->weak_dirfrags
.end();
4359 CInode
*diri
= get_inode(p
->ino
);
4361 dout(0) << " missing dir ino " << p
->ino
<< dendl
;
4365 if (diri
->dirfragtree
.is_leaf(p
->frag
)) {
4366 ls
.push_back(p
->frag
);
4368 diri
->dirfragtree
.get_leaves_under(p
->frag
, ls
);
4370 ls
.push_back(diri
->dirfragtree
[p
->frag
.value()]);
4372 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4374 CDir
*dir
= diri
->get_dirfrag(fg
);
4376 dout(0) << " missing dir for " << p
->frag
<< " (which maps to " << fg
<< ") on " << *diri
<< dendl
;
4380 if (dirs_to_share
.count(dir
)) {
4381 dout(10) << " already have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4383 dirs_to_share
.insert(dir
);
4384 unsigned nonce
= dir
->add_replica(from
);
4385 dout(10) << " have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4387 ack
->add_strong_dirfrag(dir
->dirfrag(), nonce
, dir
->dir_rep
);
4388 ack
->add_dirfrag_base(dir
);
4394 for (map
<inodeno_t
,map
<string_snap_t
,MMDSCacheRejoin::dn_weak
> >::iterator p
= weak
->weak
.begin();
4395 p
!= weak
->weak
.end();
4397 CInode
*diri
= get_inode(p
->first
);
4399 dout(0) << " missing dir ino " << p
->first
<< dendl
;
4404 for (map
<string_snap_t
,MMDSCacheRejoin::dn_weak
>::iterator q
= p
->second
.begin();
4405 q
!= p
->second
.end();
4407 // locate proper dirfrag.
4408 // optimize for common case (one dirfrag) to avoid dirs_to_share set check
4409 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4410 if (!dir
|| dir
->get_frag() != fg
) {
4411 dir
= diri
->get_dirfrag(fg
);
4413 dout(0) << " missing dir frag " << fg
<< " on " << *diri
<< dendl
;
4415 assert(dirs_to_share
.count(dir
));
4419 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4421 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4422 assert(dnl
->is_primary());
4424 if (survivor
&& dn
->is_replica(from
))
4425 dentry_remove_replica(dn
, from
, gather_locks
);
4426 unsigned dnonce
= dn
->add_replica(from
);
4427 dout(10) << " have " << *dn
<< dendl
;
4429 ack
->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
4430 dnl
->get_inode()->ino(), inodeno_t(0), 0,
4431 dnonce
, dn
->lock
.get_replica_state());
4434 CInode
*in
= dnl
->get_inode();
4437 if (survivor
&& in
->is_replica(from
))
4438 inode_remove_replica(in
, from
, true, gather_locks
);
4439 unsigned inonce
= in
->add_replica(from
);
4440 dout(10) << " have " << *in
<< dendl
;
4442 // scatter the dirlock, just in case?
4443 if (!survivor
&& in
->is_dir() && in
->has_subtree_root_dirfrag())
4444 in
->filelock
.set_state(LOCK_MIX
);
4447 acked_inodes
.insert(in
->vino());
4448 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4450 in
->_encode_locks_state_for_rejoin(bl
, from
);
4451 ack
->add_inode_locks(in
, inonce
, bl
);
4456 // weak base inodes? (root, stray, etc.)
4457 for (set
<vinodeno_t
>::iterator p
= weak
->weak_inodes
.begin();
4458 p
!= weak
->weak_inodes
.end();
4460 CInode
*in
= get_inode(*p
);
4461 assert(in
); // hmm fixme wrt stray?
4462 if (survivor
&& in
->is_replica(from
))
4463 inode_remove_replica(in
, from
, true, gather_locks
);
4464 unsigned inonce
= in
->add_replica(from
);
4465 dout(10) << " have base " << *in
<< dendl
;
4468 acked_inodes
.insert(in
->vino());
4469 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4471 in
->_encode_locks_state_for_rejoin(bl
, from
);
4472 ack
->add_inode_locks(in
, inonce
, bl
);
4476 assert(rejoin_gather
.count(from
));
4477 rejoin_gather
.erase(from
);
4479 // survivor. do everything now.
4480 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4481 p
!= weak
->inode_scatterlocks
.end();
4483 CInode
*in
= get_inode(p
->first
);
4485 dout(10) << " including base inode (due to potential scatterlock update) " << *in
<< dendl
;
4486 acked_inodes
.insert(in
->vino());
4487 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4490 rejoin_scour_survivor_replicas(from
, ack
, acked_inodes
, gather_locks
);
4491 mds
->send_message(ack
, weak
->get_connection());
4493 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
4494 if (!(*p
)->is_stable())
4495 mds
->locker
->eval_gather(*p
);
4499 if (rejoin_gather
.empty()) {
4500 rejoin_gather_finish();
4502 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4507 class C_MDC_RejoinGatherFinish
: public MDCacheContext
{
4509 explicit C_MDC_RejoinGatherFinish(MDCache
*c
) : MDCacheContext(c
) {}
4510 void finish(int r
) override
{
4511 mdcache
->rejoin_gather_finish();
4516 * rejoin_scour_survivor_replica - remove source from replica list on unmentioned objects
4518 * all validated replicas are acked with a strong nonce, etc. if that isn't in the
4519 * ack, the replica dne, and we can remove it from our replica maps.
4521 void MDCache::rejoin_scour_survivor_replicas(mds_rank_t from
, MMDSCacheRejoin
*ack
,
4522 set
<vinodeno_t
>& acked_inodes
,
4523 set
<SimpleLock
*>& gather_locks
)
4525 dout(10) << "rejoin_scour_survivor_replicas from mds." << from
<< dendl
;
4527 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
4528 p
!= inode_map
.end();
4530 CInode
*in
= p
->second
;
4533 if (in
->is_auth() &&
4534 in
->is_replica(from
) &&
4535 (ack
== NULL
|| acked_inodes
.count(p
->second
->vino()) == 0)) {
4536 inode_remove_replica(in
, from
, false, gather_locks
);
4537 dout(10) << " rem " << *in
<< dendl
;
4540 if (!in
->is_dir()) continue;
4543 in
->get_dirfrags(dfs
);
4544 for (list
<CDir
*>::iterator p
= dfs
.begin();
4549 if (dir
->is_auth() &&
4550 dir
->is_replica(from
) &&
4551 (ack
== NULL
|| ack
->strong_dirfrags
.count(dir
->dirfrag()) == 0)) {
4552 dir
->remove_replica(from
);
4553 dout(10) << " rem " << *dir
<< dendl
;
4557 for (CDir::map_t::iterator p
= dir
->items
.begin();
4558 p
!= dir
->items
.end();
4560 CDentry
*dn
= p
->second
;
4562 if (dn
->is_replica(from
) &&
4564 ack
->strong_dentries
.count(dir
->dirfrag()) == 0 ||
4565 ack
->strong_dentries
[dir
->dirfrag()].count(string_snap_t(dn
->name
, dn
->last
)) == 0)) {
4566 dentry_remove_replica(dn
, from
, gather_locks
);
4567 dout(10) << " rem " << *dn
<< dendl
;
4575 CInode
*MDCache::rejoin_invent_inode(inodeno_t ino
, snapid_t last
)
4577 CInode
*in
= new CInode(this, true, 1, last
);
4578 in
->inode
.ino
= ino
;
4579 in
->state_set(CInode::STATE_REJOINUNDEF
);
4581 rejoin_undef_inodes
.insert(in
);
4582 dout(10) << " invented " << *in
<< dendl
;
4586 CDir
*MDCache::rejoin_invent_dirfrag(dirfrag_t df
)
4588 CInode
*in
= get_inode(df
.ino
);
4590 in
= rejoin_invent_inode(df
.ino
, CEPH_NOSNAP
);
4591 if (!in
->is_dir()) {
4592 assert(in
->state_test(CInode::STATE_REJOINUNDEF
));
4593 in
->inode
.mode
= S_IFDIR
;
4594 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4596 CDir
*dir
= in
->get_or_open_dirfrag(this, df
.frag
);
4597 dir
->state_set(CDir::STATE_REJOINUNDEF
);
4598 rejoin_undef_dirfrags
.insert(dir
);
4599 dout(10) << " invented " << *dir
<< dendl
;
4603 /* This functions DOES NOT put the passed message before returning */
4604 void MDCache::handle_cache_rejoin_strong(MMDSCacheRejoin
*strong
)
4606 mds_rank_t from
= mds_rank_t(strong
->get_source().num());
4608 // only a recovering node will get a strong rejoin.
4609 assert(mds
->is_rejoin());
4611 // assimilate any potentially dirty scatterlock state
4612 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= strong
->inode_scatterlocks
.begin();
4613 p
!= strong
->inode_scatterlocks
.end();
4615 CInode
*in
= get_inode(p
->first
);
4617 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4618 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4619 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4620 rejoin_potential_updated_scatterlocks
.insert(in
);
4623 rejoin_unlinked_inodes
[from
].clear();
4625 // surviving peer may send incorrect dirfrag here (maybe they didn't
4626 // get the fragment notify, or maybe we rolled back?). we need to
4627 // infer the right frag and get them with the program. somehow.
4628 // we don't normally send ACK.. so we'll need to bundle this with
4629 // MISSING or something.
4631 // strong dirfrags/dentries.
4632 // also process auth_pins, xlocks.
4633 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= strong
->strong_dirfrags
.begin();
4634 p
!= strong
->strong_dirfrags
.end();
4636 CInode
*diri
= get_inode(p
->first
.ino
);
4638 diri
= rejoin_invent_inode(p
->first
.ino
, CEPH_NOSNAP
);
4639 CDir
*dir
= diri
->get_dirfrag(p
->first
.frag
);
4640 bool refragged
= false;
4642 dout(10) << " have " << *dir
<< dendl
;
4644 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
4645 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), frag_t()));
4646 else if (diri
->dirfragtree
.is_leaf(p
->first
.frag
))
4647 dir
= rejoin_invent_dirfrag(p
->first
);
4650 dir
->add_replica(from
, p
->second
.nonce
);
4651 dir
->dir_rep
= p
->second
.dir_rep
;
4653 dout(10) << " frag " << p
->first
<< " doesn't match dirfragtree " << *diri
<< dendl
;
4655 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, ls
);
4657 ls
.push_back(diri
->dirfragtree
[p
->first
.frag
.value()]);
4658 dout(10) << " maps to frag(s) " << ls
<< dendl
;
4659 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4660 CDir
*dir
= diri
->get_dirfrag(*q
);
4662 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), *q
));
4664 dout(10) << " have(approx) " << *dir
<< dendl
;
4665 dir
->add_replica(from
, p
->second
.nonce
);
4666 dir
->dir_rep
= p
->second
.dir_rep
;
4671 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= strong
->strong_dentries
[p
->first
];
4672 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4677 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4679 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4680 dir
= diri
->get_dirfrag(fg
);
4682 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4685 if (q
->second
.is_remote()) {
4686 dn
= dir
->add_remote_dentry(q
->first
.name
, q
->second
.remote_ino
, q
->second
.remote_d_type
,
4687 q
->second
.first
, q
->first
.snapid
);
4688 } else if (q
->second
.is_null()) {
4689 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4691 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4692 if (!in
) in
= rejoin_invent_inode(q
->second
.ino
, q
->first
.snapid
);
4693 dn
= dir
->add_primary_dentry(q
->first
.name
, in
, q
->second
.first
, q
->first
.snapid
);
4695 dout(10) << " invented " << *dn
<< dendl
;
4697 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4700 if (strong
->authpinned_dentries
.count(p
->first
) &&
4701 strong
->authpinned_dentries
[p
->first
].count(q
->first
)) {
4702 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_dentries
[p
->first
][q
->first
].begin();
4703 r
!= strong
->authpinned_dentries
[p
->first
][q
->first
].end();
4705 dout(10) << " dn authpin by " << *r
<< " on " << *dn
<< dendl
;
4707 // get/create slave mdrequest
4709 if (have_request(r
->reqid
))
4710 mdr
= request_get(r
->reqid
);
4712 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4718 if (strong
->xlocked_dentries
.count(p
->first
) &&
4719 strong
->xlocked_dentries
[p
->first
].count(q
->first
)) {
4720 MMDSCacheRejoin::slave_reqid r
= strong
->xlocked_dentries
[p
->first
][q
->first
];
4721 dout(10) << " dn xlock by " << r
<< " on " << *dn
<< dendl
;
4722 MDRequestRef mdr
= request_get(r
.reqid
); // should have this from auth_pin above.
4723 assert(mdr
->is_auth_pinned(dn
));
4724 if (!mdr
->xlocks
.count(&dn
->versionlock
)) {
4725 assert(dn
->versionlock
.can_xlock_local());
4726 dn
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4727 mdr
->xlocks
.insert(&dn
->versionlock
);
4728 mdr
->locks
.insert(&dn
->versionlock
);
4730 if (dn
->lock
.is_stable())
4731 dn
->auth_pin(&dn
->lock
);
4732 dn
->lock
.set_state(LOCK_XLOCK
);
4733 dn
->lock
.get_xlock(mdr
, mdr
->get_client());
4734 mdr
->xlocks
.insert(&dn
->lock
);
4735 mdr
->locks
.insert(&dn
->lock
);
4738 dn
->add_replica(from
, q
->second
.nonce
);
4739 dout(10) << " have " << *dn
<< dendl
;
4741 if (dnl
->is_primary()) {
4742 if (q
->second
.is_primary()) {
4743 if (vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != dnl
->get_inode()->vino()) {
4744 // the survivor missed MDentryUnlink+MDentryLink messages ?
4745 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4746 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4748 assert(in
->get_parent_dn());
4749 rejoin_unlinked_inodes
[from
].insert(in
);
4750 dout(7) << " sender has primary dentry but wrong inode" << dendl
;
4753 // the survivor missed MDentryLink message ?
4754 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4755 dout(7) << " sender doesn't have primay dentry" << dendl
;
4758 if (q
->second
.is_primary()) {
4759 // the survivor missed MDentryUnlink message ?
4760 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4762 assert(in
->get_parent_dn());
4763 rejoin_unlinked_inodes
[from
].insert(in
);
4764 dout(7) << " sender has primary dentry but we don't" << dendl
;
4770 for (map
<vinodeno_t
, MMDSCacheRejoin::inode_strong
>::iterator p
= strong
->strong_inodes
.begin();
4771 p
!= strong
->strong_inodes
.end();
4773 CInode
*in
= get_inode(p
->first
);
4775 in
->add_replica(from
, p
->second
.nonce
);
4776 dout(10) << " have " << *in
<< dendl
;
4778 MMDSCacheRejoin::inode_strong
&is
= p
->second
;
4781 if (is
.caps_wanted
) {
4782 in
->mds_caps_wanted
[from
] = is
.caps_wanted
;
4783 dout(15) << " inode caps_wanted " << ccap_string(is
.caps_wanted
)
4784 << " on " << *in
<< dendl
;
4788 // infer state from replica state:
4789 // * go to MIX if they might have wrlocks
4790 // * go to LOCK if they are LOCK (just bc identify_files_to_recover might start twiddling filelock)
4791 in
->filelock
.infer_state_from_strong_rejoin(is
.filelock
, !in
->is_dir()); // maybe also go to LOCK
4792 in
->nestlock
.infer_state_from_strong_rejoin(is
.nestlock
, false);
4793 in
->dirfragtreelock
.infer_state_from_strong_rejoin(is
.dftlock
, false);
4796 if (strong
->authpinned_inodes
.count(in
->vino())) {
4797 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_inodes
[in
->vino()].begin();
4798 r
!= strong
->authpinned_inodes
[in
->vino()].end();
4800 dout(10) << " inode authpin by " << *r
<< " on " << *in
<< dendl
;
4802 // get/create slave mdrequest
4804 if (have_request(r
->reqid
))
4805 mdr
= request_get(r
->reqid
);
4807 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4808 if (strong
->frozen_authpin_inodes
.count(in
->vino())) {
4809 assert(!in
->get_num_auth_pins());
4810 mdr
->freeze_auth_pin(in
);
4812 assert(!in
->is_frozen_auth_pin());
4818 if (strong
->xlocked_inodes
.count(in
->vino())) {
4819 for (map
<int,MMDSCacheRejoin::slave_reqid
>::iterator q
= strong
->xlocked_inodes
[in
->vino()].begin();
4820 q
!= strong
->xlocked_inodes
[in
->vino()].end();
4822 SimpleLock
*lock
= in
->get_lock(q
->first
);
4823 dout(10) << " inode xlock by " << q
->second
<< " on " << *lock
<< " on " << *in
<< dendl
;
4824 MDRequestRef mdr
= request_get(q
->second
.reqid
); // should have this from auth_pin above.
4825 assert(mdr
->is_auth_pinned(in
));
4826 if (!mdr
->xlocks
.count(&in
->versionlock
)) {
4827 assert(in
->versionlock
.can_xlock_local());
4828 in
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4829 mdr
->xlocks
.insert(&in
->versionlock
);
4830 mdr
->locks
.insert(&in
->versionlock
);
4832 if (lock
->is_stable())
4834 lock
->set_state(LOCK_XLOCK
);
4835 if (lock
== &in
->filelock
)
4837 lock
->get_xlock(mdr
, mdr
->get_client());
4838 mdr
->xlocks
.insert(lock
);
4839 mdr
->locks
.insert(lock
);
4844 for (map
<vinodeno_t
, map
<int, list
<MMDSCacheRejoin::slave_reqid
> > >::iterator p
= strong
->wrlocked_inodes
.begin();
4845 p
!= strong
->wrlocked_inodes
.end();
4847 CInode
*in
= get_inode(p
->first
);
4848 for (map
<int, list
<MMDSCacheRejoin::slave_reqid
> >::iterator q
= p
->second
.begin();
4849 q
!= p
->second
.end();
4851 SimpleLock
*lock
= in
->get_lock(q
->first
);
4852 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= q
->second
.begin();
4853 r
!= q
->second
.end();
4855 dout(10) << " inode wrlock by " << *r
<< " on " << *lock
<< " on " << *in
<< dendl
;
4856 MDRequestRef mdr
= request_get(r
->reqid
); // should have this from auth_pin above.
4858 assert(mdr
->is_auth_pinned(in
));
4859 lock
->set_state(LOCK_MIX
);
4860 if (lock
== &in
->filelock
)
4862 lock
->get_wrlock(true);
4863 mdr
->wrlocks
.insert(lock
);
4864 mdr
->locks
.insert(lock
);
4870 assert(rejoin_gather
.count(from
));
4871 rejoin_gather
.erase(from
);
4872 if (rejoin_gather
.empty()) {
4873 rejoin_gather_finish();
4875 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4879 /* This functions DOES NOT put the passed message before returning */
4880 void MDCache::handle_cache_rejoin_ack(MMDSCacheRejoin
*ack
)
4882 dout(7) << "handle_cache_rejoin_ack from " << ack
->get_source() << dendl
;
4883 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
4885 // for sending cache expire message
4886 set
<CInode
*> isolated_inodes
;
4887 set
<CInode
*> refragged_inodes
;
4890 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= ack
->strong_dirfrags
.begin();
4891 p
!= ack
->strong_dirfrags
.end();
4893 // we may have had incorrect dir fragmentation; refragment based
4894 // on what they auth tells us.
4895 CDir
*dir
= get_dirfrag(p
->first
);
4897 dir
= get_force_dirfrag(p
->first
, false);
4899 refragged_inodes
.insert(dir
->get_inode());
4902 CInode
*diri
= get_inode(p
->first
.ino
);
4904 // barebones inode; the full inode loop below will clean up.
4905 diri
= new CInode(this, false);
4906 diri
->inode
.ino
= p
->first
.ino
;
4907 diri
->inode
.mode
= S_IFDIR
;
4908 diri
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4910 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
) {
4911 diri
->inode_auth
= mds_authority_t(from
, CDIR_AUTH_UNKNOWN
);
4912 dout(10) << " add inode " << *diri
<< dendl
;
4914 diri
->inode_auth
= CDIR_AUTH_DEFAULT
;
4915 isolated_inodes
.insert(diri
);
4916 dout(10) << " unconnected dirfrag " << p
->first
<< dendl
;
4919 // barebones dirfrag; the full dirfrag loop below will clean up.
4920 dir
= diri
->add_dirfrag(new CDir(diri
, p
->first
.frag
, this, false));
4921 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
||
4922 (dir
->authority() != CDIR_AUTH_UNDEF
&&
4923 dir
->authority().first
!= from
))
4924 adjust_subtree_auth(dir
, from
);
4925 dout(10) << " add dirfrag " << *dir
<< dendl
;
4928 dir
->set_replica_nonce(p
->second
.nonce
);
4929 dir
->state_clear(CDir::STATE_REJOINING
);
4930 dout(10) << " got " << *dir
<< dendl
;
4933 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= ack
->strong_dentries
[p
->first
];
4934 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4937 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4939 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4941 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4943 assert(dn
->last
== q
->first
.snapid
);
4944 if (dn
->first
!= q
->second
.first
) {
4945 dout(10) << " adjust dn.first " << dn
->first
<< " -> " << q
->second
.first
<< " on " << *dn
<< dendl
;
4946 dn
->first
= q
->second
.first
;
4949 // may have bad linkage if we missed dentry link/unlink messages
4950 if (dnl
->is_primary()) {
4951 CInode
*in
= dnl
->get_inode();
4952 if (!q
->second
.is_primary() ||
4953 vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != in
->vino()) {
4954 dout(10) << " had bad linkage for " << *dn
<< ", unlinking " << *in
<< dendl
;
4955 dir
->unlink_inode(dn
);
4957 } else if (dnl
->is_remote()) {
4958 if (!q
->second
.is_remote() ||
4959 q
->second
.remote_ino
!= dnl
->get_remote_ino() ||
4960 q
->second
.remote_d_type
!= dnl
->get_remote_d_type()) {
4961 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4962 dir
->unlink_inode(dn
);
4965 if (!q
->second
.is_null())
4966 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4969 // hmm, did we have the proper linkage here?
4970 if (dnl
->is_null() && !q
->second
.is_null()) {
4971 if (q
->second
.is_remote()) {
4972 dn
->dir
->link_remote_inode(dn
, q
->second
.remote_ino
, q
->second
.remote_d_type
);
4974 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4976 // barebones inode; assume it's dir, the full inode loop below will clean up.
4977 in
= new CInode(this, false, q
->second
.first
, q
->first
.snapid
);
4978 in
->inode
.ino
= q
->second
.ino
;
4979 in
->inode
.mode
= S_IFDIR
;
4980 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4982 dout(10) << " add inode " << *in
<< dendl
;
4983 } else if (in
->get_parent_dn()) {
4984 dout(10) << " had bad linkage for " << *(in
->get_parent_dn())
4985 << ", unlinking " << *in
<< dendl
;
4986 in
->get_parent_dir()->unlink_inode(in
->get_parent_dn());
4988 dn
->dir
->link_primary_inode(dn
, in
);
4989 isolated_inodes
.erase(in
);
4993 dn
->set_replica_nonce(q
->second
.nonce
);
4994 dn
->lock
.set_state_rejoin(q
->second
.lock
, rejoin_waiters
);
4995 dn
->state_clear(CDentry::STATE_REJOINING
);
4996 dout(10) << " got " << *dn
<< dendl
;
5000 for (set
<CInode
*>::iterator p
= refragged_inodes
.begin();
5001 p
!= refragged_inodes
.end();
5004 (*p
)->get_nested_dirfrags(ls
);
5005 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
5006 if ((*q
)->is_auth() || ack
->strong_dirfrags
.count((*q
)->dirfrag()))
5008 assert((*q
)->get_num_any() == 0);
5009 (*p
)->close_dirfrag((*q
)->get_frag());
5014 for (map
<dirfrag_t
, bufferlist
>::iterator p
= ack
->dirfrag_bases
.begin();
5015 p
!= ack
->dirfrag_bases
.end();
5017 CDir
*dir
= get_dirfrag(p
->first
);
5019 bufferlist::iterator q
= p
->second
.begin();
5020 dir
->_decode_base(q
);
5021 dout(10) << " got dir replica " << *dir
<< dendl
;
5025 bufferlist::iterator p
= ack
->inode_base
.begin();
5032 ::decode(basebl
, p
);
5033 CInode
*in
= get_inode(ino
, last
);
5035 bufferlist::iterator q
= basebl
.begin();
5036 in
->_decode_base(q
);
5037 dout(10) << " got inode base " << *in
<< dendl
;
5041 p
= ack
->inode_locks
.begin();
5042 //dout(10) << "inode_locks len " << ack->inode_locks.length() << " is " << ack->inode_locks << dendl;
5051 ::decode(lockbl
, p
);
5053 CInode
*in
= get_inode(ino
, last
);
5055 in
->set_replica_nonce(nonce
);
5056 bufferlist::iterator q
= lockbl
.begin();
5057 in
->_decode_locks_rejoin(q
, rejoin_waiters
, rejoin_eval_locks
);
5058 in
->state_clear(CInode::STATE_REJOINING
);
5059 dout(10) << " got inode locks " << *in
<< dendl
;
5062 // FIXME: This can happen if entire subtree, together with the inode subtree root
5063 // belongs to, were trimmed between sending cache rejoin and receiving rejoin ack.
5064 assert(isolated_inodes
.empty());
5066 map
<inodeno_t
,map
<client_t
,Capability::Import
> > peer_imported
;
5067 bufferlist::iterator bp
= ack
->imported_caps
.begin();
5068 ::decode(peer_imported
, bp
);
5070 for (map
<inodeno_t
,map
<client_t
,Capability::Import
> >::iterator p
= peer_imported
.begin();
5071 p
!= peer_imported
.end();
5073 assert(cap_exports
.count(p
->first
));
5074 assert(cap_export_targets
.count(p
->first
));
5075 assert(cap_export_targets
[p
->first
] == from
);
5076 for (map
<client_t
,Capability::Import
>::iterator q
= p
->second
.begin();
5077 q
!= p
->second
.end();
5079 assert(cap_exports
[p
->first
].count(q
->first
));
5081 dout(10) << " exporting caps for client." << q
->first
<< " ino " << p
->first
<< dendl
;
5082 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5085 // mark client caps stale.
5086 MClientCaps
*m
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0,
5087 cap_exports
[p
->first
][q
->first
].capinfo
.cap_id
, 0,
5088 mds
->get_osd_epoch_barrier());
5089 m
->set_cap_peer(q
->second
.cap_id
, q
->second
.issue_seq
, q
->second
.mseq
,
5090 (q
->second
.cap_id
> 0 ? from
: -1), 0);
5091 mds
->send_message_client_counted(m
, session
);
5093 cap_exports
[p
->first
].erase(q
->first
);
5095 assert(cap_exports
[p
->first
].empty());
5099 assert(rejoin_ack_gather
.count(from
));
5100 rejoin_ack_gather
.erase(from
);
5101 if (mds
->is_rejoin()) {
5103 if (rejoin_gather
.empty()) {
5104 // eval unstable scatter locks after all wrlocks are rejoined.
5105 while (!rejoin_eval_locks
.empty()) {
5106 SimpleLock
*lock
= rejoin_eval_locks
.front();
5107 rejoin_eval_locks
.pop_front();
5108 if (!lock
->is_stable())
5109 mds
->locker
->eval_gather(lock
);
5113 if (rejoin_gather
.empty() && // make sure we've gotten our FULL inodes, too.
5114 rejoin_ack_gather
.empty()) {
5115 // finally, kickstart past snap parent opens
5116 open_snap_parents();
5118 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")"
5119 << ", rejoin_ack from (" << rejoin_ack_gather
<< ")" << dendl
;
5123 mds
->queue_waiters(rejoin_waiters
);
5128 * rejoin_trim_undef_inodes() -- remove REJOINUNDEF flagged inodes
5130 * FIXME: wait, can this actually happen? a survivor should generate cache trim
5131 * messages that clean these guys up...
5133 void MDCache::rejoin_trim_undef_inodes()
5135 dout(10) << "rejoin_trim_undef_inodes" << dendl
;
5137 while (!rejoin_undef_inodes
.empty()) {
5138 set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5140 rejoin_undef_inodes
.erase(p
);
5142 in
->clear_replica_map();
5144 // close out dirfrags
5147 in
->get_dirfrags(dfls
);
5148 for (list
<CDir
*>::iterator p
= dfls
.begin();
5152 dir
->clear_replica_map();
5154 for (CDir::map_t::iterator p
= dir
->items
.begin();
5155 p
!= dir
->items
.end();
5157 CDentry
*dn
= p
->second
;
5158 dn
->clear_replica_map();
5160 dout(10) << " trimming " << *dn
<< dendl
;
5161 dir
->remove_dentry(dn
);
5164 dout(10) << " trimming " << *dir
<< dendl
;
5165 in
->close_dirfrag(dir
->dirfrag().frag
);
5169 CDentry
*dn
= in
->get_parent_dn();
5171 dn
->clear_replica_map();
5172 dout(10) << " trimming " << *dn
<< dendl
;
5173 dn
->dir
->remove_dentry(dn
);
5175 dout(10) << " trimming " << *in
<< dendl
;
5180 assert(rejoin_undef_inodes
.empty());
5183 void MDCache::rejoin_gather_finish()
5185 dout(10) << "rejoin_gather_finish" << dendl
;
5186 assert(mds
->is_rejoin());
5188 if (open_undef_inodes_dirfrags())
5191 if (process_imported_caps())
5194 choose_lock_states_and_reconnect_caps();
5196 identify_files_to_recover();
5199 // signal completion of fetches, rejoin_gather_finish, etc.
5200 assert(rejoin_ack_gather
.count(mds
->get_nodeid()));
5201 rejoin_ack_gather
.erase(mds
->get_nodeid());
5203 // did we already get our acks too?
5204 if (rejoin_ack_gather
.empty()) {
5205 // finally, kickstart past snap parent opens
5206 open_snap_parents();
5210 class C_MDC_RejoinOpenInoFinish
: public MDCacheContext
{
5213 C_MDC_RejoinOpenInoFinish(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
5214 void finish(int r
) override
{
5215 mdcache
->rejoin_open_ino_finish(ino
, r
);
5219 void MDCache::rejoin_open_ino_finish(inodeno_t ino
, int ret
)
5221 dout(10) << "open_caps_inode_finish ino " << ino
<< " ret " << ret
<< dendl
;
5224 cap_imports_missing
.insert(ino
);
5225 } else if (ret
== mds
->get_nodeid()) {
5226 assert(get_inode(ino
));
5228 auto p
= cap_imports
.find(ino
);
5229 assert(p
!= cap_imports
.end());
5230 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5231 assert(q
->second
.count(MDS_RANK_NONE
));
5232 assert(q
->second
.size() == 1);
5233 rejoin_export_caps(p
->first
, q
->first
, q
->second
[MDS_RANK_NONE
], ret
);
5235 cap_imports
.erase(p
);
5238 assert(cap_imports_num_opening
> 0);
5239 cap_imports_num_opening
--;
5241 if (cap_imports_num_opening
== 0) {
5242 if (rejoin_gather
.empty())
5243 rejoin_gather_finish();
5244 else if (rejoin_gather
.count(mds
->get_nodeid()))
5245 process_imported_caps();
5249 class C_MDC_RejoinSessionsOpened
: public MDCacheLogContext
{
5251 map
<client_t
,entity_inst_t
> client_map
;
5252 map
<client_t
,uint64_t> sseqmap
;
5254 C_MDC_RejoinSessionsOpened(MDCache
*c
, map
<client_t
,entity_inst_t
>& cm
) :
5255 MDCacheLogContext(c
), client_map(cm
) {}
5256 void finish(int r
) override
{
5258 mdcache
->rejoin_open_sessions_finish(client_map
, sseqmap
);
5262 void MDCache::rejoin_open_sessions_finish(map
<client_t
,entity_inst_t
> client_map
,
5263 map
<client_t
,uint64_t>& sseqmap
)
5265 dout(10) << "rejoin_open_sessions_finish" << dendl
;
5266 mds
->server
->finish_force_open_sessions(client_map
, sseqmap
);
5267 if (rejoin_gather
.empty())
5268 rejoin_gather_finish();
5271 bool MDCache::process_imported_caps()
5273 dout(10) << "process_imported_caps" << dendl
;
5275 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5276 CInode
*in
= get_inode(p
->first
);
5278 assert(in
->is_auth());
5279 cap_imports_missing
.erase(p
->first
);
5282 if (cap_imports_missing
.count(p
->first
) > 0)
5285 cap_imports_num_opening
++;
5286 dout(10) << " opening missing ino " << p
->first
<< dendl
;
5287 open_ino(p
->first
, (int64_t)-1, new C_MDC_RejoinOpenInoFinish(this, p
->first
), false);
5290 if (cap_imports_num_opening
> 0)
5293 // called by rejoin_gather_finish() ?
5294 if (rejoin_gather
.count(mds
->get_nodeid()) == 0) {
5295 // if sessions for imported caps are all open ?
5296 for (map
<client_t
,entity_inst_t
>::iterator p
= rejoin_client_map
.begin();
5297 p
!= rejoin_client_map
.end();
5299 if (!mds
->sessionmap
.have_session(entity_name_t::CLIENT(p
->first
.v
))) {
5300 C_MDC_RejoinSessionsOpened
*finish
= new C_MDC_RejoinSessionsOpened(this, rejoin_client_map
);
5301 version_t pv
= mds
->server
->prepare_force_open_sessions(rejoin_client_map
, finish
->sseqmap
);
5302 ESessions
*le
= new ESessions(pv
, rejoin_client_map
);
5303 mds
->mdlog
->start_submit_entry(le
, finish
);
5304 mds
->mdlog
->flush();
5305 rejoin_client_map
.clear();
5309 rejoin_client_map
.clear();
5311 // process caps that were exported by slave rename
5312 for (map
<inodeno_t
,pair
<mds_rank_t
,map
<client_t
,Capability::Export
> > >::iterator p
= rejoin_slave_exports
.begin();
5313 p
!= rejoin_slave_exports
.end();
5315 CInode
*in
= get_inode(p
->first
);
5317 for (map
<client_t
,Capability::Export
>::iterator q
= p
->second
.second
.begin();
5318 q
!= p
->second
.second
.end();
5320 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5323 Capability
*cap
= in
->get_client_cap(q
->first
);
5325 cap
= in
->add_client_cap(q
->first
, session
);
5326 cap
->merge(q
->second
, true);
5328 Capability::Import
& im
= rejoin_imported_caps
[p
->second
.first
][p
->first
][q
->first
];
5329 assert(cap
->get_last_seq() == im
.issue_seq
);
5330 assert(cap
->get_mseq() == im
.mseq
);
5331 cap
->set_cap_id(im
.cap_id
);
5332 // send cap import because we assigned a new cap ID
5333 do_cap_import(session
, in
, cap
, q
->second
.cap_id
, q
->second
.seq
, q
->second
.mseq
- 1,
5334 p
->second
.first
, CEPH_CAP_FLAG_AUTH
);
5337 rejoin_slave_exports
.clear();
5338 rejoin_imported_caps
.clear();
5340 // process cap imports
5341 // ino -> client -> frommds -> capex
5342 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ) {
5343 CInode
*in
= get_inode(p
->first
);
5345 dout(10) << " still missing ino " << p
->first
5346 << ", will try again after replayed client requests" << dendl
;
5350 assert(in
->is_auth());
5351 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5352 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5354 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5355 Capability
*cap
= in
->reconnect_cap(q
->first
, r
->second
, session
);
5356 add_reconnected_cap(q
->first
, in
->ino(), r
->second
);
5357 if (r
->first
>= 0) {
5358 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5360 do_cap_import(session
, in
, cap
, r
->second
.capinfo
.cap_id
, 0, 0, r
->first
, 0);
5362 Capability::Import
& im
= rejoin_imported_caps
[r
->first
][p
->first
][q
->first
];
5363 im
.cap_id
= cap
->get_cap_id();
5364 im
.issue_seq
= cap
->get_last_seq();
5365 im
.mseq
= cap
->get_mseq();
5369 cap_imports
.erase(p
++); // remove and move on
5374 rejoin_gather
.erase(mds
->get_nodeid());
5375 maybe_send_pending_rejoins();
5377 if (rejoin_gather
.empty() && rejoin_ack_gather
.count(mds
->get_nodeid()))
5378 rejoin_gather_finish();
5383 void MDCache::check_realm_past_parents(SnapRealm
*realm
, bool reconnect
)
5385 // are this realm's parents fully open?
5386 if (realm
->have_past_parents_open()) {
5387 dout(10) << " have past snap parents for realm " << *realm
5388 << " on " << *realm
->inode
<< dendl
;
5390 // finish off client snaprealm reconnects?
5391 auto p
= reconnected_snaprealms
.find(realm
->inode
->ino());
5392 if (p
!= reconnected_snaprealms
.end()) {
5393 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
5394 finish_snaprealm_reconnect(q
->first
, realm
, q
->second
);
5395 reconnected_snaprealms
.erase(p
);
5399 if (!missing_snap_parents
.count(realm
->inode
)) {
5400 dout(10) << " MISSING past snap parents for realm " << *realm
5401 << " on " << *realm
->inode
<< dendl
;
5402 realm
->inode
->get(CInode::PIN_OPENINGSNAPPARENTS
);
5403 missing_snap_parents
[realm
->inode
].size(); // just to get it into the map!
5405 dout(10) << " (already) MISSING past snap parents for realm " << *realm
5406 << " on " << *realm
->inode
<< dendl
;
5411 void MDCache::rebuild_need_snapflush(CInode
*head_in
, SnapRealm
*realm
,
5412 client_t client
, snapid_t snap_follows
)
5414 dout(10) << "rebuild_need_snapflush " << snap_follows
<< " on " << *head_in
<< dendl
;
5416 const set
<snapid_t
>& snaps
= realm
->get_snaps();
5417 snapid_t follows
= snap_follows
;
5420 CInode
*in
= pick_inode_snap(head_in
, follows
);
5423 dout(10) << " need snapflush from client." << client
<< " on " << *in
<< dendl
;
5425 /* TODO: we can check the reconnected/flushing caps to find
5426 * which locks need gathering */
5427 for (int i
= 0; i
< num_cinode_locks
; i
++) {
5428 int lockid
= cinode_lock_info
[i
].lock
;
5429 SimpleLock
*lock
= in
->get_lock(lockid
);
5431 in
->client_snap_caps
[lockid
].insert(client
);
5433 lock
->set_state(LOCK_SNAP_SYNC
);
5434 lock
->get_wrlock(true);
5437 for (auto p
= snaps
.lower_bound(in
->first
);
5438 p
!= snaps
.end() && *p
<= in
->last
;
5440 head_in
->add_need_snapflush(in
, *p
, client
);
5448 * choose lock states based on reconnected caps
5450 void MDCache::choose_lock_states_and_reconnect_caps()
5452 dout(10) << "choose_lock_states_and_reconnect_caps" << dendl
;
5454 map
<client_t
,MClientSnap
*> splits
;
5456 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator i
= inode_map
.begin();
5457 i
!= inode_map
.end();
5459 CInode
*in
= i
->second
;
5461 if (in
->last
!= CEPH_NOSNAP
)
5464 if (in
->is_auth() && !in
->is_base() && in
->inode
.is_dirty_rstat())
5465 in
->mark_dirty_rstat();
5467 auto p
= reconnected_caps
.find(in
->ino());
5470 if (p
!= reconnected_caps
.end()) {
5471 for (const auto &it
: p
->second
)
5472 dirty_caps
|= it
.second
.dirty_caps
;
5474 in
->choose_lock_states(dirty_caps
);
5475 dout(15) << " chose lock states on " << *in
<< dendl
;
5477 SnapRealm
*realm
= in
->find_snaprealm();
5479 check_realm_past_parents(realm
, realm
== in
->snaprealm
);
5481 if (p
!= reconnected_caps
.end()) {
5482 bool missing_snap_parent
= false;
5483 // also, make sure client's cap is in the correct snaprealm.
5484 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5485 if (q
->second
.snap_follows
> 0 && q
->second
.snap_follows
< in
->first
- 1) {
5486 if (realm
->have_past_parents_open()) {
5487 rebuild_need_snapflush(in
, realm
, q
->first
, q
->second
.snap_follows
);
5489 missing_snap_parent
= true;
5493 if (q
->second
.realm_ino
== realm
->inode
->ino()) {
5494 dout(15) << " client." << q
->first
<< " has correct realm " << q
->second
.realm_ino
<< dendl
;
5496 dout(15) << " client." << q
->first
<< " has wrong realm " << q
->second
.realm_ino
5497 << " != " << realm
->inode
->ino() << dendl
;
5498 if (realm
->have_past_parents_open()) {
5499 // ok, include in a split message _now_.
5500 prepare_realm_split(realm
, q
->first
, in
->ino(), splits
);
5502 // send the split later.
5503 missing_snap_parent
= true;
5507 if (missing_snap_parent
)
5508 missing_snap_parents
[realm
->inode
].insert(in
);
5515 void MDCache::prepare_realm_split(SnapRealm
*realm
, client_t client
, inodeno_t ino
,
5516 map
<client_t
,MClientSnap
*>& splits
)
5519 if (splits
.count(client
) == 0) {
5520 splits
[client
] = snap
= new MClientSnap(CEPH_SNAP_OP_SPLIT
);
5521 snap
->head
.split
= realm
->inode
->ino();
5522 realm
->build_snap_trace(snap
->bl
);
5524 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
5525 p
!= realm
->open_children
.end();
5527 snap
->split_realms
.push_back((*p
)->inode
->ino());
5530 snap
= splits
[client
];
5531 snap
->split_inos
.push_back(ino
);
5534 void MDCache::send_snaps(map
<client_t
,MClientSnap
*>& splits
)
5536 dout(10) << "send_snaps" << dendl
;
5538 for (map
<client_t
,MClientSnap
*>::iterator p
= splits
.begin();
5541 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->first
.v
));
5543 dout(10) << " client." << p
->first
5544 << " split " << p
->second
->head
.split
5545 << " inos " << p
->second
->split_inos
5547 mds
->send_message_client_counted(p
->second
, session
);
5549 dout(10) << " no session for client." << p
->first
<< dendl
;
5558 * remove any items from logsegment open_file lists that don't have
5561 void MDCache::clean_open_file_lists()
5563 dout(10) << "clean_open_file_lists" << dendl
;
5565 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
5566 p
!= mds
->mdlog
->segments
.end();
5568 LogSegment
*ls
= p
->second
;
5570 elist
<CInode
*>::iterator q
= ls
->open_files
.begin(member_offset(CInode
, item_open_file
));
5574 if (in
->last
== CEPH_NOSNAP
) {
5575 if (!in
->is_any_caps_wanted()) {
5576 dout(10) << " unlisting unwanted/capless inode " << *in
<< dendl
;
5577 in
->item_open_file
.remove_myself();
5579 } else if (in
->last
!= CEPH_NOSNAP
) {
5580 if (in
->client_snap_caps
.empty()) {
5581 dout(10) << " unlisting flushed snap inode " << *in
<< dendl
;
5582 in
->item_open_file
.remove_myself();
5591 Capability
* MDCache::rejoin_import_cap(CInode
*in
, client_t client
, const cap_reconnect_t
& icr
, mds_rank_t frommds
)
5593 dout(10) << "rejoin_import_cap for client." << client
<< " from mds." << frommds
5594 << " on " << *in
<< dendl
;
5595 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5597 dout(10) << " no session for client." << client
<< dendl
;
5601 Capability
*cap
= in
->reconnect_cap(client
, icr
, session
);
5604 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5606 do_cap_import(session
, in
, cap
, icr
.capinfo
.cap_id
, 0, 0, frommds
, 0);
5612 void MDCache::export_remaining_imported_caps()
5614 dout(10) << "export_remaining_imported_caps" << dendl
;
5616 stringstream warn_str
;
5618 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5619 warn_str
<< " ino " << p
->first
<< "\n";
5620 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5621 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5623 // mark client caps stale.
5624 MClientCaps
*stale
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0, 0, 0, mds
->get_osd_epoch_barrier());
5625 stale
->set_cap_peer(0, 0, 0, -1, 0);
5626 mds
->send_message_client_counted(stale
, q
->first
);
5630 mds
->heartbeat_reset();
5633 for (map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator p
= cap_reconnect_waiters
.begin();
5634 p
!= cap_reconnect_waiters
.end();
5636 mds
->queue_waiters(p
->second
);
5638 cap_imports
.clear();
5639 cap_reconnect_waiters
.clear();
5641 if (warn_str
.peek() != EOF
) {
5642 mds
->clog
->warn() << "failed to reconnect caps for missing inodes:";
5643 mds
->clog
->warn(warn_str
);
5647 void MDCache::try_reconnect_cap(CInode
*in
, Session
*session
)
5649 client_t client
= session
->info
.get_client();
5650 const cap_reconnect_t
*rc
= get_replay_cap_reconnect(in
->ino(), client
);
5652 in
->reconnect_cap(client
, *rc
, session
);
5653 dout(10) << "try_reconnect_cap client." << client
5654 << " reconnect wanted " << ccap_string(rc
->capinfo
.wanted
)
5655 << " issue " << ccap_string(rc
->capinfo
.issued
)
5656 << " on " << *in
<< dendl
;
5657 remove_replay_cap_reconnect(in
->ino(), client
);
5659 if (in
->is_replicated()) {
5660 mds
->locker
->try_eval(in
, CEPH_CAP_LOCKS
);
5663 auto p
= reconnected_caps
.find(in
->ino());
5664 if (p
!= reconnected_caps
.end()) {
5665 auto q
= p
->second
.find(client
);
5666 if (q
!= p
->second
.end())
5667 dirty_caps
= q
->second
.dirty_caps
;
5669 in
->choose_lock_states(dirty_caps
);
5670 dout(15) << " chose lock states on " << *in
<< dendl
;
5673 map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator it
=
5674 cap_reconnect_waiters
.find(in
->ino());
5675 if (it
!= cap_reconnect_waiters
.end()) {
5676 mds
->queue_waiters(it
->second
);
5677 cap_reconnect_waiters
.erase(it
);
5685 // cap imports and delayed snap parent opens
5687 void MDCache::do_cap_import(Session
*session
, CInode
*in
, Capability
*cap
,
5688 uint64_t p_cap_id
, ceph_seq_t p_seq
, ceph_seq_t p_mseq
,
5689 int peer
, int p_flags
)
5691 client_t client
= session
->info
.inst
.name
.num();
5692 SnapRealm
*realm
= in
->find_snaprealm();
5693 if (realm
->have_past_parents_open()) {
5694 dout(10) << "do_cap_import " << session
->info
.inst
.name
<< " mseq " << cap
->get_mseq() << " on " << *in
<< dendl
;
5695 if (cap
->get_last_seq() == 0) // reconnected cap
5696 cap
->inc_last_seq();
5697 cap
->set_last_issue();
5698 cap
->set_last_issue_stamp(ceph_clock_now());
5700 MClientCaps
*reap
= new MClientCaps(CEPH_CAP_OP_IMPORT
,
5702 realm
->inode
->ino(),
5703 cap
->get_cap_id(), cap
->get_last_seq(),
5704 cap
->pending(), cap
->wanted(), 0,
5705 cap
->get_mseq(), mds
->get_osd_epoch_barrier());
5706 in
->encode_cap_message(reap
, cap
);
5707 realm
->build_snap_trace(reap
->snapbl
);
5708 reap
->set_cap_peer(p_cap_id
, p_seq
, p_mseq
, peer
, p_flags
);
5709 mds
->send_message_client_counted(reap
, session
);
5711 dout(10) << "do_cap_import missing past snap parents, delaying " << session
->info
.inst
.name
<< " mseq "
5712 << cap
->get_mseq() << " on " << *in
<< dendl
;
5714 cap
->inc_suppress();
5715 delayed_imported_caps
[client
].insert(in
);
5716 missing_snap_parents
[in
].size();
5720 void MDCache::do_delayed_cap_imports()
5722 dout(10) << "do_delayed_cap_imports" << dendl
;
5724 assert(delayed_imported_caps
.empty());
5727 struct C_MDC_OpenSnapParents
: public MDCacheContext
{
5728 explicit C_MDC_OpenSnapParents(MDCache
*c
) : MDCacheContext(c
) {}
5729 void finish(int r
) override
{
5730 mdcache
->open_snap_parents();
5734 void MDCache::open_snap_parents()
5736 dout(10) << "open_snap_parents" << dendl
;
5738 map
<client_t
,MClientSnap
*> splits
;
5739 MDSGatherBuilder
gather(g_ceph_context
);
5741 auto p
= missing_snap_parents
.begin();
5742 while (p
!= missing_snap_parents
.end()) {
5743 CInode
*in
= p
->first
;
5744 assert(in
->snaprealm
);
5745 if (in
->snaprealm
->open_parents(gather
.new_sub())) {
5746 dout(10) << " past parents now open on " << *in
<< dendl
;
5748 for (CInode
*child
: p
->second
) {
5749 auto q
= reconnected_caps
.find(child
->ino());
5750 assert(q
!= reconnected_caps
.end());
5751 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5752 if (r
->second
.snap_follows
> 0 && r
->second
.snap_follows
< in
->first
- 1) {
5753 rebuild_need_snapflush(child
, in
->snaprealm
, r
->first
, r
->second
.snap_follows
);
5755 // make sure client's cap is in the correct snaprealm.
5756 if (r
->second
.realm_ino
!= in
->ino()) {
5757 prepare_realm_split(in
->snaprealm
, r
->first
, child
->ino(), splits
);
5762 missing_snap_parents
.erase(p
++);
5764 in
->put(CInode::PIN_OPENINGSNAPPARENTS
);
5766 // finish off client snaprealm reconnects?
5767 map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator q
= reconnected_snaprealms
.find(in
->ino());
5768 if (q
!= reconnected_snaprealms
.end()) {
5769 for (map
<client_t
,snapid_t
>::iterator r
= q
->second
.begin();
5770 r
!= q
->second
.end();
5772 finish_snaprealm_reconnect(r
->first
, in
->snaprealm
, r
->second
);
5773 reconnected_snaprealms
.erase(q
);
5776 dout(10) << " opening past parents on " << *in
<< dendl
;
5783 if (gather
.has_subs()) {
5784 dout(10) << "open_snap_parents - waiting for "
5785 << gather
.num_subs_remaining() << dendl
;
5786 gather
.set_finisher(new C_MDC_OpenSnapParents(this));
5789 if (!reconnected_snaprealms
.empty()) {
5790 stringstream warn_str
;
5791 for (map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator p
= reconnected_snaprealms
.begin();
5792 p
!= reconnected_snaprealms
.end();
5794 warn_str
<< " unconnected snaprealm " << p
->first
<< "\n";
5795 for (map
<client_t
,snapid_t
>::iterator q
= p
->second
.begin();
5796 q
!= p
->second
.end();
5798 warn_str
<< " client." << q
->first
<< " snapid " << q
->second
<< "\n";
5800 mds
->clog
->warn() << "open_snap_parents has:";
5801 mds
->clog
->warn(warn_str
);
5803 assert(rejoin_waiters
.empty());
5804 assert(missing_snap_parents
.empty());
5805 dout(10) << "open_snap_parents - all open" << dendl
;
5806 do_delayed_cap_imports();
5808 assert(rejoin_done
);
5809 rejoin_done
.release()->complete(0);
5810 reconnected_caps
.clear();
5814 bool MDCache::open_undef_inodes_dirfrags()
5816 dout(10) << "open_undef_inodes_dirfrags "
5817 << rejoin_undef_inodes
.size() << " inodes "
5818 << rejoin_undef_dirfrags
.size() << " dirfrags" << dendl
;
5820 set
<CDir
*> fetch_queue
= rejoin_undef_dirfrags
;
5822 for (set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5823 p
!= rejoin_undef_inodes
.end();
5826 assert(!in
->is_base());
5827 fetch_queue
.insert(in
->get_parent_dir());
5830 if (fetch_queue
.empty())
5833 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_RejoinGatherFinish(this));
5834 for (set
<CDir
*>::iterator p
= fetch_queue
.begin();
5835 p
!= fetch_queue
.end();
5838 CInode
*diri
= dir
->get_inode();
5839 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
5841 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
5842 assert(diri
->dirfragtree
.is_leaf(dir
->get_frag()));
5843 dir
->fetch(gather
.new_sub());
5845 assert(gather
.has_subs());
5850 void MDCache::opened_undef_inode(CInode
*in
) {
5851 dout(10) << "opened_undef_inode " << *in
<< dendl
;
5852 rejoin_undef_inodes
.erase(in
);
5854 // FIXME: re-hash dentries if necessary
5855 assert(in
->inode
.dir_layout
.dl_dir_hash
== g_conf
->mds_default_dir_hash
);
5856 if (in
->has_dirfrags() && !in
->dirfragtree
.is_leaf(frag_t())) {
5857 CDir
*dir
= in
->get_dirfrag(frag_t());
5859 rejoin_undef_dirfrags
.erase(dir
);
5860 in
->force_dirfrags();
5862 in
->get_dirfrags(ls
);
5863 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
)
5864 rejoin_undef_dirfrags
.insert(*p
);
5869 void MDCache::finish_snaprealm_reconnect(client_t client
, SnapRealm
*realm
, snapid_t seq
)
5871 if (seq
< realm
->get_newest_seq()) {
5872 dout(10) << "finish_snaprealm_reconnect client." << client
<< " has old seq " << seq
<< " < "
5873 << realm
->get_newest_seq()
5874 << " on " << *realm
<< dendl
;
5876 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5878 MClientSnap
*snap
= new MClientSnap(CEPH_SNAP_OP_UPDATE
);
5879 realm
->build_snap_trace(snap
->bl
);
5880 mds
->send_message_client_counted(snap
, session
);
5882 dout(10) << " ...or not, no session for this client!" << dendl
;
5885 dout(10) << "finish_snaprealm_reconnect client." << client
<< " up to date"
5886 << " on " << *realm
<< dendl
;
5892 void MDCache::rejoin_send_acks()
5894 dout(7) << "rejoin_send_acks" << dendl
;
5897 for (map
<mds_rank_t
, set
<CInode
*> >::iterator p
= rejoin_unlinked_inodes
.begin();
5898 p
!= rejoin_unlinked_inodes
.end();
5900 for (set
<CInode
*>::iterator q
= p
->second
.begin();
5901 q
!= p
->second
.end();
5904 dout(7) << " unlinked inode " << *in
<< dendl
;
5906 if (!in
->is_replica(p
->first
))
5909 CDentry
*dn
= in
->get_parent_dn();
5910 if (dn
->is_replica(p
->first
))
5912 dn
->add_replica(p
->first
);
5913 CDir
*dir
= dn
->get_dir();
5914 if (dir
->is_replica(p
->first
))
5916 dir
->add_replica(p
->first
);
5917 in
= dir
->get_inode();
5918 if (in
->is_replica(p
->first
))
5925 rejoin_unlinked_inodes
.clear();
5927 // send acks to everyone in the recovery set
5928 map
<mds_rank_t
,MMDSCacheRejoin
*> ack
;
5929 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
5930 p
!= recovery_set
.end();
5932 ack
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
5935 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
5936 p
!= subtrees
.end();
5938 CDir
*dir
= p
->first
;
5939 if (!dir
->is_auth())
5941 dout(10) << "subtree " << *dir
<< dendl
;
5943 // auth items in this subtree
5947 while (!dq
.empty()) {
5948 CDir
*dir
= dq
.front();
5952 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= dir
->replicas_begin();
5953 r
!= dir
->replicas_end();
5955 ack
[r
->first
]->add_strong_dirfrag(dir
->dirfrag(), ++r
->second
, dir
->dir_rep
);
5956 ack
[r
->first
]->add_dirfrag_base(dir
);
5959 for (CDir::map_t::iterator q
= dir
->items
.begin();
5960 q
!= dir
->items
.end();
5962 CDentry
*dn
= q
->second
;
5963 CDentry::linkage_t
*dnl
= dn
->get_linkage();
5967 if (dnl
->is_primary())
5968 in
= dnl
->get_inode();
5971 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= dn
->replicas_begin();
5972 r
!= dn
->replicas_end();
5974 ack
[r
->first
]->add_strong_dentry(dir
->dirfrag(), dn
->name
, dn
->first
, dn
->last
,
5975 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
5976 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
5977 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
5979 dn
->lock
.get_replica_state());
5980 // peer missed MDentrylink message ?
5981 if (in
&& !in
->is_replica(r
->first
))
5982 in
->add_replica(r
->first
);
5988 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= in
->replicas_begin();
5989 r
!= in
->replicas_end();
5991 ack
[r
->first
]->add_inode_base(in
, mds
->mdsmap
->get_up_features());
5993 in
->_encode_locks_state_for_rejoin(bl
, r
->first
);
5994 ack
[r
->first
]->add_inode_locks(in
, ++r
->second
, bl
);
5997 // subdirs in this subtree?
5998 in
->get_nested_dirfrags(dq
);
6004 if (root
&& root
->is_auth())
6005 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= root
->replicas_begin();
6006 r
!= root
->replicas_end();
6008 ack
[r
->first
]->add_inode_base(root
, mds
->mdsmap
->get_up_features());
6010 root
->_encode_locks_state_for_rejoin(bl
, r
->first
);
6011 ack
[r
->first
]->add_inode_locks(root
, ++r
->second
, bl
);
6014 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= myin
->replicas_begin();
6015 r
!= myin
->replicas_end();
6017 ack
[r
->first
]->add_inode_base(myin
, mds
->mdsmap
->get_up_features());
6019 myin
->_encode_locks_state_for_rejoin(bl
, r
->first
);
6020 ack
[r
->first
]->add_inode_locks(myin
, ++r
->second
, bl
);
6023 // include inode base for any inodes whose scatterlocks may have updated
6024 for (set
<CInode
*>::iterator p
= rejoin_potential_updated_scatterlocks
.begin();
6025 p
!= rejoin_potential_updated_scatterlocks
.end();
6028 for (compact_map
<mds_rank_t
,unsigned>::iterator r
= in
->replicas_begin();
6029 r
!= in
->replicas_end();
6031 ack
[r
->first
]->add_inode_base(in
, mds
->mdsmap
->get_up_features());
6035 for (map
<mds_rank_t
,MMDSCacheRejoin
*>::iterator p
= ack
.begin();
6038 ::encode(rejoin_imported_caps
[p
->first
], p
->second
->imported_caps
);
6039 mds
->send_message_mds(p
->second
, p
->first
);
6042 rejoin_imported_caps
.clear();
6046 void MDCache::reissue_all_caps()
6048 dout(10) << "reissue_all_caps" << dendl
;
6050 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
6051 p
!= inode_map
.end();
6053 CInode
*in
= p
->second
;
6054 if (in
->is_head() && in
->is_any_caps()) {
6055 if (!mds
->locker
->eval(in
, CEPH_CAP_LOCKS
))
6056 mds
->locker
->issue_caps(in
);
6062 // ===============================================================================
6064 struct C_MDC_QueuedCow
: public MDCacheContext
{
6067 C_MDC_QueuedCow(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) :
6068 MDCacheContext(mdc
), in(i
), mut(m
) {}
6069 void finish(int r
) override
{
6070 mdcache
->_queued_file_recover_cow(in
, mut
);
6075 void MDCache::queue_file_recover(CInode
*in
)
6077 dout(10) << "queue_file_recover " << *in
<< dendl
;
6078 assert(in
->is_auth());
6082 SnapRealm *realm = in->find_snaprealm();
6083 set<snapid_t> s = realm->get_snaps();
6084 while (!s.empty() && *s.begin() < in->first)
6086 while (!s.empty() && *s.rbegin() > in->last)
6087 s.erase(*s.rbegin());
6088 dout(10) << " snaps in [" << in->first << "," << in->last << "] are " << s << dendl;
6090 inode_t *pi = in->project_inode();
6091 pi->version = in->pre_dirty();
6093 auto mut(std::make_shared<MutationImpl>());
6094 mut->ls = mds->mdlog->get_current_segment();
6095 EUpdate *le = new EUpdate(mds->mdlog, "queue_file_recover cow");
6096 mds->mdlog->start_entry(le);
6097 predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY);
6099 s.erase(*s.begin());
6100 while (!s.empty()) {
6101 snapid_t snapid = *s.begin();
6102 CInode *cow_inode = 0;
6103 journal_cow_inode(mut, &le->metablob, in, snapid-1, &cow_inode);
6105 recovery_queue.enqueue(cow_inode);
6106 s.erase(*s.begin());
6109 in->parent->first = in->first;
6110 le->metablob.add_primary_dentry(in->parent, in, true);
6111 mds->mdlog->submit_entry(le, new C_MDC_QueuedCow(this, in, mut));
6112 mds->mdlog->flush();
6116 recovery_queue
.enqueue(in
);
6119 void MDCache::_queued_file_recover_cow(CInode
*in
, MutationRef
& mut
)
6121 in
->pop_and_dirty_projected_inode(mut
->ls
);
6123 mds
->locker
->drop_locks(mut
.get());
6129 * called after recovery to recover file sizes for previously opened (for write)
6130 * files. that is, those where max_size > size.
6132 void MDCache::identify_files_to_recover()
6134 dout(10) << "identify_files_to_recover" << dendl
;
6135 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
6136 p
!= inode_map
.end();
6138 CInode
*in
= p
->second
;
6142 if (in
->last
!= CEPH_NOSNAP
)
6145 // Only normal files need file size recovery
6146 if (!in
->is_file()) {
6150 bool recover
= false;
6151 for (map
<client_t
,client_writeable_range_t
>::iterator p
= in
->inode
.client_ranges
.begin();
6152 p
!= in
->inode
.client_ranges
.end();
6154 Capability
*cap
= in
->get_client_cap(p
->first
);
6156 dout(10) << " client." << p
->first
<< " has range " << p
->second
<< " but no cap on " << *in
<< dendl
;
6163 if (in
->filelock
.is_stable()) {
6164 in
->auth_pin(&in
->filelock
);
6166 assert(in
->filelock
.get_state() == LOCK_XLOCKSNAP
);
6168 in
->filelock
.set_state(LOCK_PRE_SCAN
);
6169 rejoin_recover_q
.push_back(in
);
6171 rejoin_check_q
.push_back(in
);
6176 void MDCache::start_files_to_recover()
6178 for (CInode
*in
: rejoin_check_q
) {
6179 if (in
->filelock
.get_state() == LOCK_XLOCKSNAP
)
6180 mds
->locker
->issue_caps(in
);
6181 mds
->locker
->check_inode_max_size(in
);
6183 rejoin_check_q
.clear();
6184 for (CInode
*in
: rejoin_recover_q
) {
6185 mds
->locker
->file_recover(&in
->filelock
);
6187 if (!rejoin_recover_q
.empty()) {
6188 rejoin_recover_q
.clear();
6193 void MDCache::do_file_recover()
6195 recovery_queue
.advance();
6198 // ===============================================================================
6201 // ----------------------------
6204 class C_MDC_RetryTruncate
: public MDCacheContext
{
6208 C_MDC_RetryTruncate(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6209 MDCacheContext(c
), in(i
), ls(l
) {}
6210 void finish(int r
) override
{
6211 mdcache
->_truncate_inode(in
, ls
);
6215 void MDCache::truncate_inode(CInode
*in
, LogSegment
*ls
)
6217 inode_t
*pi
= in
->get_projected_inode();
6218 dout(10) << "truncate_inode "
6219 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6223 ls
->truncating_inodes
.insert(in
);
6224 in
->get(CInode::PIN_TRUNCATING
);
6227 if (!in
->client_need_snapflush
.empty() &&
6228 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6229 assert(in
->filelock
.is_xlocked());
6230 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6231 mds
->locker
->issue_caps(in
);
6235 _truncate_inode(in
, ls
);
6238 struct C_IO_MDC_TruncateFinish
: public MDCacheIOContext
{
6241 C_IO_MDC_TruncateFinish(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6242 MDCacheIOContext(c
), in(i
), ls(l
) {}
6243 void finish(int r
) override
{
6244 assert(r
== 0 || r
== -ENOENT
);
6245 mdcache
->truncate_inode_finish(in
, ls
);
6249 void MDCache::_truncate_inode(CInode
*in
, LogSegment
*ls
)
6251 inode_t
*pi
= &in
->inode
;
6252 dout(10) << "_truncate_inode "
6253 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6254 << " on " << *in
<< dendl
;
6256 assert(pi
->is_truncating());
6257 assert(pi
->truncate_size
< (1ULL << 63));
6258 assert(pi
->truncate_from
< (1ULL << 63));
6259 assert(pi
->truncate_size
< pi
->truncate_from
);
6262 SnapRealm
*realm
= in
->find_snaprealm();
6263 SnapContext nullsnap
;
6264 const SnapContext
*snapc
;
6266 dout(10) << " realm " << *realm
<< dendl
;
6267 snapc
= &realm
->get_snap_context();
6269 dout(10) << " NO realm, using null context" << dendl
;
6271 assert(in
->last
== CEPH_NOSNAP
);
6273 dout(10) << "_truncate_inode snapc " << snapc
<< " on " << *in
<< dendl
;
6274 filer
.truncate(in
->inode
.ino
, &in
->inode
.layout
, *snapc
,
6275 pi
->truncate_size
, pi
->truncate_from
-pi
->truncate_size
,
6276 pi
->truncate_seq
, ceph::real_time::min(), 0,
6277 new C_OnFinisher(new C_IO_MDC_TruncateFinish(this, in
, ls
),
6281 struct C_MDC_TruncateLogged
: public MDCacheLogContext
{
6284 C_MDC_TruncateLogged(MDCache
*m
, CInode
*i
, MutationRef
& mu
) :
6285 MDCacheLogContext(m
), in(i
), mut(mu
) {}
6286 void finish(int r
) override
{
6287 mdcache
->truncate_inode_logged(in
, mut
);
6291 void MDCache::truncate_inode_finish(CInode
*in
, LogSegment
*ls
)
6293 dout(10) << "truncate_inode_finish " << *in
<< dendl
;
6295 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6296 assert(p
!= ls
->truncating_inodes
.end());
6297 ls
->truncating_inodes
.erase(p
);
6300 inode_t
*pi
= in
->project_inode();
6301 pi
->version
= in
->pre_dirty();
6302 pi
->truncate_from
= 0;
6303 pi
->truncate_pending
--;
6305 MutationRef
mut(new MutationImpl());
6306 mut
->ls
= mds
->mdlog
->get_current_segment();
6307 mut
->add_projected_inode(in
);
6309 EUpdate
*le
= new EUpdate(mds
->mdlog
, "truncate finish");
6310 mds
->mdlog
->start_entry(le
);
6311 CDentry
*dn
= in
->get_projected_parent_dn();
6312 le
->metablob
.add_dir_context(dn
->get_dir());
6313 le
->metablob
.add_primary_dentry(dn
, in
, true);
6314 le
->metablob
.add_truncate_finish(in
->ino(), ls
->seq
);
6316 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
6317 mds
->mdlog
->submit_entry(le
, new C_MDC_TruncateLogged(this, in
, mut
));
6319 // flush immediately if there are readers/writers waiting
6320 if (in
->is_waiter_for(CInode::WAIT_TRUNC
) ||
6321 (in
->get_caps_wanted() & (CEPH_CAP_FILE_RD
|CEPH_CAP_FILE_WR
)))
6322 mds
->mdlog
->flush();
6325 void MDCache::truncate_inode_logged(CInode
*in
, MutationRef
& mut
)
6327 dout(10) << "truncate_inode_logged " << *in
<< dendl
;
6329 mds
->locker
->drop_locks(mut
.get());
6332 in
->put(CInode::PIN_TRUNCATING
);
6333 in
->auth_unpin(this);
6335 list
<MDSInternalContextBase
*> waiters
;
6336 in
->take_waiting(CInode::WAIT_TRUNC
, waiters
);
6337 mds
->queue_waiters(waiters
);
6341 void MDCache::add_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6343 dout(20) << "add_recovered_truncate " << *in
<< " in log segment "
6344 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6345 ls
->truncating_inodes
.insert(in
);
6346 in
->get(CInode::PIN_TRUNCATING
);
6349 void MDCache::remove_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6351 dout(20) << "remove_recovered_truncate " << *in
<< " in log segment "
6352 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6353 // if we have the logseg the truncate started in, it must be in our list.
6354 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6355 assert(p
!= ls
->truncating_inodes
.end());
6356 ls
->truncating_inodes
.erase(p
);
6357 in
->put(CInode::PIN_TRUNCATING
);
6360 void MDCache::start_recovered_truncates()
6362 dout(10) << "start_recovered_truncates" << dendl
;
6363 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
6364 p
!= mds
->mdlog
->segments
.end();
6366 LogSegment
*ls
= p
->second
;
6367 for (set
<CInode
*>::iterator q
= ls
->truncating_inodes
.begin();
6368 q
!= ls
->truncating_inodes
.end();
6373 if (!in
->client_need_snapflush
.empty() &&
6374 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6375 assert(in
->filelock
.is_stable());
6376 in
->filelock
.set_state(LOCK_XLOCKDONE
);
6377 in
->auth_pin(&in
->filelock
);
6378 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6379 // start_files_to_recover will revoke caps
6382 _truncate_inode(in
, ls
);
6392 // ================================================================================
6397 * note: only called while MDS is active or stopping... NOT during recovery.
6398 * however, we may expire a replica whose authority is recovering.
6401 bool MDCache::trim(int max
, int count
)
6405 max
= lru
.lru_get_size() - count
;
6408 } else if (max
< 0) {
6409 max
= g_conf
->mds_cache_size
;
6413 dout(7) << "trim max=" << max
<< " cur=" << lru
.lru_get_size() << dendl
;
6415 // process delayed eval_stray()
6416 stray_manager
.advance_delayed();
6418 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
6419 bool is_standby_replay
= mds
->is_standby_replay();
6420 int unexpirable
= 0;
6421 list
<CDentry
*> unexpirables
;
6423 // trim dentries from the LRU: only enough to satisfy `max`,
6424 // unless we see null dentries at the bottom of the LRU,
6425 // in which case trim all those.
6426 bool trimming_nulls
= true;
6427 while (trimming_nulls
|| lru
.lru_get_size() + unexpirable
> (unsigned)max
) {
6428 CDentry
*dn
= static_cast<CDentry
*>(lru
.lru_expire());
6432 if (!dn
->get_linkage()->is_null()) {
6433 trimming_nulls
= false;
6434 if (lru
.lru_get_size() + unexpirable
< (unsigned)max
) {
6435 unexpirables
.push_back(dn
);
6439 if ((is_standby_replay
&& dn
->get_linkage()->inode
&&
6440 dn
->get_linkage()->inode
->item_open_file
.is_on_list()) ||
6441 trim_dentry(dn
, expiremap
)) {
6442 unexpirables
.push_back(dn
);
6446 for(list
<CDentry
*>::iterator i
= unexpirables
.begin();
6447 i
!= unexpirables
.end();
6449 lru
.lru_insert_mid(*i
);
6451 // trim non-auth, non-bound subtrees
6452 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6453 p
!= subtrees
.end();) {
6454 CDir
*dir
= p
->first
;
6456 if (!dir
->is_auth() && !dir
->get_inode()->is_auth()) {
6457 // don't trim subtree root if its auth MDS is recovering.
6458 // This simplify the cache rejoin code.
6459 if (dir
->is_subtree_root() &&
6460 rejoin_ack_gather
.count(dir
->get_dir_auth().first
))
6462 if (dir
->get_num_ref() == 1) // subtree pin
6463 trim_dirfrag(dir
, 0, expiremap
);
6468 if (max
== 0 && root
) {
6470 root
->get_dirfrags(ls
);
6471 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6473 if (dir
->get_num_ref() == 1) // subtree pin
6474 trim_dirfrag(dir
, 0, expiremap
);
6476 if (root
->get_num_ref() == 0)
6477 trim_inode(0, root
, 0, expiremap
);
6480 std::set
<mds_rank_t
> stopping
;
6481 mds
->mdsmap
->get_mds_set(stopping
, MDSMap::STATE_STOPPING
);
6482 stopping
.erase(mds
->get_nodeid());
6483 for (auto rank
: stopping
) {
6484 CInode
* mdsdir_in
= get_inode(MDS_INO_MDSDIR(rank
));
6488 if (expiremap
.count(rank
) == 0) {
6489 expiremap
[rank
] = new MCacheExpire(mds
->get_nodeid());
6492 dout(20) << __func__
<< ": try expiring " << *mdsdir_in
<< " for stopping mds." << mds
<< dendl
;
6494 const bool aborted
= expire_recursive(mdsdir_in
, expiremap
);
6496 dout(20) << __func__
<< ": successfully expired mdsdir" << dendl
;
6498 mdsdir_in
->get_dirfrags(ls
);
6499 for (auto dir
: ls
) {
6500 if (dir
->get_num_ref() == 1) // subtree pin
6501 trim_dirfrag(dir
, dir
, expiremap
);
6503 if (mdsdir_in
->get_num_ref() == 0)
6504 trim_inode(NULL
, mdsdir_in
, NULL
, expiremap
);
6506 dout(20) << __func__
<< ": some unexpirable contents in mdsdir" << dendl
;
6510 // Other rank's base inodes (when I'm stopping)
6512 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
6513 p
!= base_inodes
.end(); ++p
) {
6514 if (MDS_INO_MDSDIR_OWNER((*p
)->ino()) != mds
->get_nodeid()) {
6515 dout(20) << __func__
<< ": maybe trimming base: " << *(*p
) << dendl
;
6516 if ((*p
)->get_num_ref() == 0) {
6517 trim_inode(NULL
, *p
, NULL
, expiremap
);
6523 // send any expire messages
6524 send_expire_messages(expiremap
);
6529 void MDCache::send_expire_messages(map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6532 for (map
<mds_rank_t
, MCacheExpire
*>::iterator it
= expiremap
.begin();
6533 it
!= expiremap
.end();
6535 if (mds
->is_cluster_degraded() &&
6536 (mds
->mdsmap
->get_state(it
->first
) < MDSMap::STATE_REJOIN
||
6537 (mds
->mdsmap
->get_state(it
->first
) == MDSMap::STATE_REJOIN
&&
6538 rejoin_sent
.count(it
->first
) == 0))) {
6542 dout(7) << "sending cache_expire to " << it
->first
<< dendl
;
6543 mds
->send_message_mds(it
->second
, it
->first
);
6548 bool MDCache::trim_dentry(CDentry
*dn
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6550 dout(12) << "trim_dentry " << *dn
<< dendl
;
6552 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6554 CDir
*dir
= dn
->get_dir();
6557 CDir
*con
= get_subtree_root(dir
);
6559 dout(12) << " in container " << *con
<< dendl
;
6561 dout(12) << " no container; under a not-yet-linked dir" << dendl
;
6562 assert(dn
->is_auth());
6565 // If replica dentry is not readable, it's likely we will receive
6566 // MDentryLink/MDentryUnlink message soon (It's possible we first
6567 // receive a MDentryUnlink message, then MDentryLink message)
6568 // MDentryLink message only replicates an inode, so we should
6569 // avoid trimming the inode's parent dentry. This is because that
6570 // unconnected replicas are problematic for subtree migration.
6571 if (!dn
->is_auth() && !dn
->lock
.can_read(-1) &&
6572 !dn
->get_dir()->get_inode()->is_stray())
6575 // adjust the dir state
6576 // NOTE: we can safely remove a clean, null dentry without effecting
6577 // directory completeness.
6578 // (check this _before_ we unlink the inode, below!)
6579 bool clear_complete
= false;
6580 if (!(dnl
->is_null() && dn
->is_clean()))
6581 clear_complete
= true;
6583 // unlink the dentry
6584 if (dnl
->is_remote()) {
6586 dir
->unlink_inode(dn
);
6587 } else if (dnl
->is_primary()) {
6588 // expire the inode, too.
6589 CInode
*in
= dnl
->get_inode();
6591 if (trim_inode(dn
, in
, con
, expiremap
))
6592 return true; // purging stray instead of trimming
6594 assert(dnl
->is_null());
6597 if (!dn
->is_auth()) {
6598 // notify dentry authority.
6599 mds_authority_t auth
= dn
->authority();
6601 for (int p
=0; p
<2; p
++) {
6602 mds_rank_t a
= auth
.first
;
6603 if (p
) a
= auth
.second
;
6604 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6605 if (mds
->get_nodeid() == auth
.second
&&
6606 con
->is_importing()) break; // don't send any expire while importing.
6607 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6609 dout(12) << " sending expire to mds." << a
<< " on " << *dn
<< dendl
;
6610 assert(a
!= mds
->get_nodeid());
6611 if (expiremap
.count(a
) == 0)
6612 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6613 expiremap
[a
]->add_dentry(con
->dirfrag(), dir
->dirfrag(), dn
->name
, dn
->last
, dn
->get_replica_nonce());
6618 if (dn
->last
== CEPH_NOSNAP
&& dir
->is_auth())
6619 dir
->add_to_bloom(dn
);
6620 dir
->remove_dentry(dn
);
6623 dir
->state_clear(CDir::STATE_COMPLETE
);
6626 if (dir
->get_num_head_items() == 0 && dir
->is_subtree_root())
6627 migrator
->export_empty_import(dir
);
6629 if (mds
->logger
) mds
->logger
->inc(l_mds_inodes_expired
);
6634 void MDCache::trim_dirfrag(CDir
*dir
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6636 dout(15) << "trim_dirfrag " << *dir
<< dendl
;
6638 if (dir
->is_subtree_root()) {
6639 assert(!dir
->is_auth() ||
6640 (!dir
->is_replicated() && dir
->inode
->is_base()));
6641 remove_subtree(dir
); // remove from subtree map
6643 assert(dir
->get_num_ref() == 0);
6645 CInode
*in
= dir
->get_inode();
6647 if (!dir
->is_auth()) {
6648 mds_authority_t auth
= dir
->authority();
6650 // was this an auth delegation? (if so, slightly modified container)
6652 if (dir
->is_subtree_root()) {
6653 dout(12) << " subtree root, container is " << *dir
<< dendl
;
6655 condf
= dir
->dirfrag();
6657 condf
= con
->dirfrag();
6660 for (int p
=0; p
<2; p
++) {
6661 mds_rank_t a
= auth
.first
;
6662 if (p
) a
= auth
.second
;
6663 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6664 if (mds
->get_nodeid() == auth
.second
&&
6665 con
->is_importing()) break; // don't send any expire while importing.
6666 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6668 dout(12) << " sending expire to mds." << a
<< " on " << *dir
<< dendl
;
6669 assert(a
!= mds
->get_nodeid());
6670 if (expiremap
.count(a
) == 0)
6671 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6672 expiremap
[a
]->add_dir(condf
, dir
->dirfrag(), dir
->replica_nonce
);
6676 in
->close_dirfrag(dir
->dirfrag().frag
);
6680 * Try trimming an inode from the cache
6682 * @return true if the inode is still in cache, else false if it was trimmed
6684 bool MDCache::trim_inode(CDentry
*dn
, CInode
*in
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6686 dout(15) << "trim_inode " << *in
<< dendl
;
6687 assert(in
->get_num_ref() == 0);
6690 // If replica inode's dirfragtreelock is not readable, it's likely
6691 // some dirfrags of the inode are being fragmented and we will receive
6692 // MMDSFragmentNotify soon. MMDSFragmentNotify only replicates the new
6693 // dirfrags, so we should avoid trimming these dirfrags' parent inode.
6694 // This is because that unconnected replicas are problematic for
6695 // subtree migration.
6697 if (!in
->is_auth() && !in
->dirfragtreelock
.can_read(-1))
6702 in
->get_dirfrags(dfls
);
6703 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
6705 assert(!dir
->is_subtree_root());
6706 trim_dirfrag(dir
, con
? con
:dir
, expiremap
); // if no container (e.g. root dirfrag), use *p
6711 if (in
->is_auth()) {
6712 // eval stray after closing dirfrags
6713 if (dn
&& !dn
->state_test(CDentry::STATE_PURGING
)) {
6714 maybe_eval_stray(in
);
6715 if (dn
->state_test(CDentry::STATE_PURGING
) || dn
->get_num_ref() > 0)
6719 mds_authority_t auth
= in
->authority();
6723 df
= con
->dirfrag();
6725 df
= dirfrag_t(0,frag_t()); // must be a root or stray inode.
6727 for (int p
=0; p
<2; p
++) {
6728 mds_rank_t a
= auth
.first
;
6729 if (p
) a
= auth
.second
;
6730 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6731 if (con
&& mds
->get_nodeid() == auth
.second
&&
6732 con
->is_importing()) break; // don't send any expire while importing.
6733 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6735 dout(12) << " sending expire to mds." << a
<< " on " << *in
<< dendl
;
6736 assert(a
!= mds
->get_nodeid());
6737 if (expiremap
.count(a
) == 0)
6738 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6739 expiremap
[a
]->add_inode(df
, in
->vino(), in
->get_replica_nonce());
6744 if (in->is_auth()) {
6745 if (in->hack_accessed)
6746 mds->logger->inc("outt");
6748 mds->logger->inc("outut");
6749 mds->logger->fset("oututl", ceph_clock_now() - in->hack_load_stamp);
6756 dn
->get_dir()->unlink_inode(dn
);
6763 * trim_non_auth - remove any non-auth items from our cache
6765 * this reduces the amount of non-auth metadata in our cache, reducing the
6766 * load incurred by the rejoin phase.
6768 * the only non-auth items that remain are those that are needed to
6769 * attach our own subtrees to the root.
6771 * when we are done, all dentries will be in the top bit of the lru.
6773 * why we have to do this:
6774 * we may not have accurate linkage for non-auth items. which means we will
6775 * know which subtree it falls into, and can not be sure to declare it to the
6776 * correct authority.
6778 void MDCache::trim_non_auth()
6780 dout(7) << "trim_non_auth" << dendl
;
6782 // temporarily pin all subtree roots
6783 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6784 p
!= subtrees
.end();
6786 p
->first
->get(CDir::PIN_SUBTREETEMP
);
6788 // note first auth item we see.
6789 // when we see it the second time, stop.
6790 CDentry
*first_auth
= 0;
6792 // trim non-auth items from the lru
6793 while (lru
.lru_get_size() > 0) {
6794 CDentry
*dn
= static_cast<CDentry
*>(lru
.lru_expire());
6796 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6798 if (dn
->is_auth()) {
6799 // add back into lru (at the top)
6800 lru
.lru_insert_top(dn
);
6802 if (dnl
->is_remote() && dnl
->get_inode() && !dnl
->get_inode()->is_auth())
6803 dn
->unlink_remote(dnl
);
6808 if (first_auth
== dn
)
6812 // non-auth. expire.
6813 CDir
*dir
= dn
->get_dir();
6816 // unlink the dentry
6817 dout(10) << " removing " << *dn
<< dendl
;
6818 if (dnl
->is_remote()) {
6819 dir
->unlink_inode(dn
);
6821 else if (dnl
->is_primary()) {
6822 CInode
*in
= dnl
->get_inode();
6823 dout(10) << " removing " << *in
<< dendl
;
6825 in
->get_dirfrags(ls
);
6826 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6828 assert(!subdir
->is_subtree_root());
6829 in
->close_dirfrag(subdir
->dirfrag().frag
);
6831 dir
->unlink_inode(dn
);
6835 assert(dnl
->is_null());
6838 assert(!dir
->has_bloom());
6839 dir
->remove_dentry(dn
);
6840 // adjust the dir state
6841 dir
->state_clear(CDir::STATE_COMPLETE
); // dir incomplete!
6842 // close empty non-auth dirfrag
6843 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0)
6844 dir
->inode
->close_dirfrag(dir
->get_frag());
6848 // move everything in the pintail to the top bit of the lru.
6849 lru
.lru_touch_entire_pintail();
6851 // unpin all subtrees
6852 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6853 p
!= subtrees
.end();
6855 p
->first
->put(CDir::PIN_SUBTREETEMP
);
6857 if (lru
.lru_get_size() == 0) {
6858 // root, stray, etc.?
6859 ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
6860 while (p
!= inode_map
.end()) {
6861 ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator next
= p
;
6863 CInode
*in
= p
->second
;
6864 if (!in
->is_auth()) {
6866 in
->get_dirfrags(ls
);
6867 for (list
<CDir
*>::iterator p
= ls
.begin();
6870 dout(10) << " removing " << **p
<< dendl
;
6871 assert((*p
)->get_num_ref() == 1); // SUBTREE
6872 remove_subtree((*p
));
6873 in
->close_dirfrag((*p
)->dirfrag().frag
);
6875 dout(10) << " removing " << *in
<< dendl
;
6876 assert(!in
->get_parent_dn());
6877 assert(in
->get_num_ref() == 0);
6888 * Recursively trim the subtree rooted at directory to remove all
6889 * CInodes/CDentrys/CDirs that aren't links to remote MDSes, or ancestors
6890 * of those links. This is used to clear invalid data out of the cache.
6891 * Note that it doesn't clear the passed-in directory, since that's not
6894 bool MDCache::trim_non_auth_subtree(CDir
*dir
)
6896 dout(10) << "trim_non_auth_subtree(" << dir
<< ") " << *dir
<< dendl
;
6898 bool keep_dir
= !can_trim_non_auth_dirfrag(dir
);
6900 CDir::map_t::iterator j
= dir
->begin();
6901 CDir::map_t::iterator i
= j
;
6902 while (j
!= dir
->end()) {
6904 CDentry
*dn
= i
->second
;
6905 dout(10) << "trim_non_auth_subtree(" << dir
<< ") Checking dentry " << dn
<< dendl
;
6906 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6907 if (dnl
->is_primary()) { // check for subdirectories, etc
6908 CInode
*in
= dnl
->get_inode();
6909 bool keep_inode
= false;
6911 list
<CDir
*> subdirs
;
6912 in
->get_dirfrags(subdirs
);
6913 for (list
<CDir
*>::iterator subdir
= subdirs
.begin();
6914 subdir
!= subdirs
.end();
6916 if ((*subdir
)->is_subtree_root()) {
6918 dout(10) << "trim_non_auth_subtree(" << dir
<< ") keeping " << **subdir
<< dendl
;
6920 if (trim_non_auth_subtree(*subdir
))
6923 in
->close_dirfrag((*subdir
)->get_frag());
6924 dir
->state_clear(CDir::STATE_COMPLETE
); // now incomplete!
6930 if (!keep_inode
) { // remove it!
6931 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing inode " << in
<< " with dentry" << dn
<< dendl
;
6932 dir
->unlink_inode(dn
);
6934 assert(!dir
->has_bloom());
6935 dir
->remove_dentry(dn
);
6937 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping inode " << in
<< " with dentry " << dn
<<dendl
;
6938 dn
->state_clear(CDentry::STATE_AUTH
);
6939 in
->state_clear(CInode::STATE_AUTH
);
6941 } else if (keep_dir
&& dnl
->is_null()) { // keep null dentry for slave rollback
6942 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping dentry " << dn
<<dendl
;
6943 } else { // just remove it
6944 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing dentry " << dn
<< dendl
;
6945 if (dnl
->is_remote())
6946 dir
->unlink_inode(dn
);
6947 dir
->remove_dentry(dn
);
6950 dir
->state_clear(CDir::STATE_AUTH
);
6952 * We've now checked all our children and deleted those that need it.
6953 * Now return to caller, and tell them if *we're* a keeper.
6955 return keep_dir
|| dir
->get_num_any();
6959 * during replay, when we determine a subtree is no longer ours, we
6960 * try to trim it from our cache. because subtrees must be connected
6961 * to the root, the fact that we can trim this tree may mean that our
6962 * children or parents can also be trimmed.
6964 void MDCache::try_trim_non_auth_subtree(CDir
*dir
)
6966 dout(10) << "try_trim_nonauth_subtree " << *dir
<< dendl
;
6968 // can we now trim child subtrees?
6970 get_subtree_bounds(dir
, bounds
);
6971 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
6973 if (bd
->get_dir_auth().first
!= mds
->get_nodeid() && // we are not auth
6974 bd
->get_num_any() == 0 && // and empty
6975 can_trim_non_auth_dirfrag(bd
)) {
6976 CInode
*bi
= bd
->get_inode();
6977 dout(10) << " closing empty non-auth child subtree " << *bd
<< dendl
;
6980 bi
->close_dirfrag(bd
->get_frag());
6984 if (trim_non_auth_subtree(dir
)) {
6986 try_subtree_merge(dir
);
6988 // can we trim this subtree (and possibly our ancestors) too?
6990 CInode
*diri
= dir
->get_inode();
6991 if (diri
->is_base()) {
6992 if (!diri
->is_root() && diri
->authority().first
!= mds
->get_nodeid()) {
6993 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
6994 remove_subtree(dir
);
6996 diri
->close_dirfrag(dir
->get_frag());
6998 dout(10) << " removing " << *diri
<< dendl
;
6999 assert(!diri
->get_parent_dn());
7000 assert(diri
->get_num_ref() == 0);
7006 CDir
*psub
= get_subtree_root(diri
->get_parent_dir());
7007 dout(10) << " parent subtree is " << *psub
<< dendl
;
7008 if (psub
->get_dir_auth().first
== mds
->get_nodeid())
7009 break; // we are auth, keep.
7011 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
7012 remove_subtree(dir
);
7014 diri
->close_dirfrag(dir
->get_frag());
7016 dout(10) << " parent subtree also non-auth: " << *psub
<< dendl
;
7017 if (trim_non_auth_subtree(psub
))
7026 void MDCache::standby_trim_segment(LogSegment
*ls
)
7028 ls
->new_dirfrags
.clear_list();
7029 ls
->open_files
.clear_list();
7031 while (!ls
->dirty_dirfrags
.empty()) {
7032 CDir
*dir
= ls
->dirty_dirfrags
.front();
7035 while (!ls
->dirty_inodes
.empty()) {
7036 CInode
*in
= ls
->dirty_inodes
.front();
7039 while (!ls
->dirty_dentries
.empty()) {
7040 CDentry
*dn
= ls
->dirty_dentries
.front();
7043 while (!ls
->dirty_parent_inodes
.empty()) {
7044 CInode
*in
= ls
->dirty_parent_inodes
.front();
7045 in
->clear_dirty_parent();
7047 while (!ls
->dirty_dirfrag_dir
.empty()) {
7048 CInode
*in
= ls
->dirty_dirfrag_dir
.front();
7049 in
->filelock
.remove_dirty();
7051 while (!ls
->dirty_dirfrag_nest
.empty()) {
7052 CInode
*in
= ls
->dirty_dirfrag_nest
.front();
7053 in
->nestlock
.remove_dirty();
7055 while (!ls
->dirty_dirfrag_dirfragtree
.empty()) {
7056 CInode
*in
= ls
->dirty_dirfrag_dirfragtree
.front();
7057 in
->dirfragtreelock
.remove_dirty();
7061 /* This function DOES put the passed message before returning */
7062 void MDCache::handle_cache_expire(MCacheExpire
*m
)
7064 mds_rank_t from
= mds_rank_t(m
->get_from());
7066 dout(7) << "cache_expire from mds." << from
<< dendl
;
7068 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
7073 set
<SimpleLock
*> gather_locks
;
7075 for (map
<dirfrag_t
,MCacheExpire::realm
>::iterator p
= m
->realms
.begin();
7076 p
!= m
->realms
.end();
7079 if (p
->first
.ino
> 0) {
7080 CInode
*expired_inode
= get_inode(p
->first
.ino
);
7081 assert(expired_inode
); // we had better have this.
7082 CDir
*parent_dir
= expired_inode
->get_approx_dirfrag(p
->first
.frag
);
7085 int export_state
= -1;
7086 if (parent_dir
->is_auth() && parent_dir
->is_exporting()) {
7087 export_state
= migrator
->get_export_state(parent_dir
);
7088 assert(export_state
>= 0);
7091 if (!parent_dir
->is_auth() ||
7092 (export_state
!= -1 &&
7093 ((export_state
== Migrator::EXPORT_WARNING
&&
7094 migrator
->export_has_warned(parent_dir
,from
)) ||
7095 export_state
== Migrator::EXPORT_EXPORTING
||
7096 export_state
== Migrator::EXPORT_LOGGINGFINISH
||
7097 (export_state
== Migrator::EXPORT_NOTIFYING
&&
7098 !migrator
->export_has_notified(parent_dir
,from
))))) {
7101 dout(7) << "delaying nonauth|warned expires for " << *parent_dir
<< dendl
;
7102 assert(parent_dir
->is_frozen_tree_root());
7104 // make a message container
7105 if (delayed_expire
[parent_dir
].count(from
) == 0)
7106 delayed_expire
[parent_dir
][from
] = new MCacheExpire(from
);
7108 // merge these expires into it
7109 delayed_expire
[parent_dir
][from
]->add_realm(p
->first
, p
->second
);
7112 assert(export_state
<= Migrator::EXPORT_PREPPING
||
7113 (export_state
== Migrator::EXPORT_WARNING
&&
7114 !migrator
->export_has_warned(parent_dir
, from
)));
7116 dout(7) << "expires for " << *parent_dir
<< dendl
;
7118 dout(7) << "containerless expires (root, stray inodes)" << dendl
;
7122 for (map
<vinodeno_t
,uint32_t>::iterator it
= p
->second
.inodes
.begin();
7123 it
!= p
->second
.inodes
.end();
7125 CInode
*in
= get_inode(it
->first
);
7126 unsigned nonce
= it
->second
;
7129 dout(0) << " inode expire on " << it
->first
<< " from " << from
7130 << ", don't have it" << dendl
;
7133 assert(in
->is_auth());
7134 dout(20) << __func__
<< ": expiring inode " << *in
<< dendl
;
7137 if (nonce
== in
->get_replica_nonce(from
)) {
7138 // remove from our cached_by
7139 dout(7) << " inode expire on " << *in
<< " from mds." << from
7140 << " cached_by was " << in
->get_replicas() << dendl
;
7141 inode_remove_replica(in
, from
, false, gather_locks
);
7144 // this is an old nonce, ignore expire.
7145 dout(7) << " inode expire on " << *in
<< " from mds." << from
7146 << " with old nonce " << nonce
7147 << " (current " << in
->get_replica_nonce(from
) << "), dropping"
7153 for (map
<dirfrag_t
,uint32_t>::iterator it
= p
->second
.dirs
.begin();
7154 it
!= p
->second
.dirs
.end();
7156 CDir
*dir
= get_dirfrag(it
->first
);
7157 unsigned nonce
= it
->second
;
7160 CInode
*diri
= get_inode(it
->first
.ino
);
7162 if (mds
->is_rejoin() &&
7163 rejoin_ack_gather
.count(mds
->get_nodeid()) && // haven't sent rejoin ack yet
7164 !diri
->is_replica(from
)) {
7166 diri
->get_nested_dirfrags(ls
);
7167 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7168 << " while rejoining, inode isn't replicated" << dendl
;
7169 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
7171 if (dir
->is_replica(from
)) {
7172 dout(7) << " dir expire on " << *dir
<< " from mds." << from
<< dendl
;
7173 dir
->remove_replica(from
);
7178 CDir
*other
= diri
->get_approx_dirfrag(it
->first
.frag
);
7180 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7181 << " have " << *other
<< ", mismatched frags, dropping" << dendl
;
7185 dout(0) << " dir expire on " << it
->first
<< " from " << from
7186 << ", don't have it" << dendl
;
7189 dout(20) << __func__
<< ": expiring dirfrag " << *dir
<< dendl
;
7191 assert(dir
->is_auth());
7194 if (nonce
== dir
->get_replica_nonce(from
)) {
7195 // remove from our cached_by
7196 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7197 << " replicas was " << dir
->replica_map
<< dendl
;
7198 dir
->remove_replica(from
);
7201 // this is an old nonce, ignore expire.
7202 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7203 << " with old nonce " << nonce
<< " (current " << dir
->get_replica_nonce(from
)
7204 << "), dropping" << dendl
;
7209 for (map
<dirfrag_t
, map
<pair
<string
,snapid_t
>,uint32_t> >::iterator pd
= p
->second
.dentries
.begin();
7210 pd
!= p
->second
.dentries
.end();
7212 dout(10) << " dn expires in dir " << pd
->first
<< dendl
;
7213 CInode
*diri
= get_inode(pd
->first
.ino
);
7215 CDir
*dir
= diri
->get_dirfrag(pd
->first
.frag
);
7218 dout(0) << " dn expires on " << pd
->first
<< " from " << from
7219 << ", must have refragmented" << dendl
;
7221 assert(dir
->is_auth());
7224 for (map
<pair
<string
,snapid_t
>,uint32_t>::iterator p
= pd
->second
.begin();
7225 p
!= pd
->second
.end();
7227 unsigned nonce
= p
->second
;
7231 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7233 // which dirfrag for this dentry?
7234 CDir
*dir
= diri
->get_dirfrag(diri
->pick_dirfrag(p
->first
.first
));
7236 assert(dir
->is_auth());
7237 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7242 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< " in " << *dir
<< dendl
;
7244 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< dendl
;
7248 if (nonce
== dn
->get_replica_nonce(from
)) {
7249 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
<< dendl
;
7250 dentry_remove_replica(dn
, from
, gather_locks
);
7253 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
7254 << " with old nonce " << nonce
<< " (current " << dn
->get_replica_nonce(from
)
7255 << "), dropping" << dendl
;
7264 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
7265 if (!(*p
)->is_stable())
7266 mds
->locker
->eval_gather(*p
);
7270 void MDCache::process_delayed_expire(CDir
*dir
)
7272 dout(7) << "process_delayed_expire on " << *dir
<< dendl
;
7273 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7274 p
!= delayed_expire
[dir
].end();
7276 handle_cache_expire(p
->second
);
7277 delayed_expire
.erase(dir
);
7280 void MDCache::discard_delayed_expire(CDir
*dir
)
7282 dout(7) << "discard_delayed_expire on " << *dir
<< dendl
;
7283 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7284 p
!= delayed_expire
[dir
].end();
7287 delayed_expire
.erase(dir
);
7290 void MDCache::inode_remove_replica(CInode
*in
, mds_rank_t from
, bool rejoin
,
7291 set
<SimpleLock
*>& gather_locks
)
7293 in
->remove_replica(from
);
7294 in
->mds_caps_wanted
.erase(from
);
7296 // note: this code calls _eval more often than it needs to!
7298 if (in
->authlock
.remove_replica(from
)) gather_locks
.insert(&in
->authlock
);
7299 if (in
->linklock
.remove_replica(from
)) gather_locks
.insert(&in
->linklock
);
7300 if (in
->snaplock
.remove_replica(from
)) gather_locks
.insert(&in
->snaplock
);
7301 if (in
->xattrlock
.remove_replica(from
)) gather_locks
.insert(&in
->xattrlock
);
7302 if (in
->flocklock
.remove_replica(from
)) gather_locks
.insert(&in
->flocklock
);
7303 if (in
->policylock
.remove_replica(from
)) gather_locks
.insert(&in
->policylock
);
7305 // If 'rejoin' is true and the scatter lock is in LOCK_MIX_* state.
7306 // Don't remove the recovering mds from lock's gathering list because
7307 // it may hold rejoined wrlocks.
7308 if (in
->dirfragtreelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->dirfragtreelock
);
7309 if (in
->filelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->filelock
);
7310 if (in
->nestlock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->nestlock
);
7313 void MDCache::dentry_remove_replica(CDentry
*dn
, mds_rank_t from
, set
<SimpleLock
*>& gather_locks
)
7315 dn
->remove_replica(from
);
7318 if (dn
->lock
.remove_replica(from
))
7319 gather_locks
.insert(&dn
->lock
);
7321 // Replicated strays might now be elegible for purge
7322 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7323 if (dnl
->is_primary()) {
7324 maybe_eval_stray(dnl
->get_inode());
7328 void MDCache::trim_client_leases()
7330 utime_t now
= ceph_clock_now();
7332 dout(10) << "trim_client_leases" << dendl
;
7334 for (int pool
=0; pool
<client_lease_pools
; pool
++) {
7335 int before
= client_leases
[pool
].size();
7336 if (client_leases
[pool
].empty())
7339 while (!client_leases
[pool
].empty()) {
7340 ClientLease
*r
= client_leases
[pool
].front();
7341 if (r
->ttl
> now
) break;
7342 CDentry
*dn
= static_cast<CDentry
*>(r
->parent
);
7343 dout(10) << " expiring client." << r
->client
<< " lease of " << *dn
<< dendl
;
7344 dn
->remove_client_lease(r
, mds
->locker
);
7346 int after
= client_leases
[pool
].size();
7347 dout(10) << "trim_client_leases pool " << pool
<< " trimmed "
7348 << (before
-after
) << " leases, " << after
<< " left" << dendl
;
7353 void MDCache::check_memory_usage()
7355 static MemoryModel
mm(g_ceph_context
);
7356 static MemoryModel::snap last
;
7358 static MemoryModel::snap baseline
= last
;
7360 // check client caps
7361 assert(CInode::count() == inode_map
.size());
7362 float caps_per_inode
= 0.0;
7363 if (CInode::count())
7364 caps_per_inode
= (float)Capability::count() / (float)CInode::count();
7366 dout(2) << "check_memory_usage"
7367 << " total " << last
.get_total()
7368 << ", rss " << last
.get_rss()
7369 << ", heap " << last
.get_heap()
7370 << ", baseline " << baseline
.get_heap()
7371 << ", buffers " << (buffer::get_total_alloc() >> 10)
7372 << ", " << num_inodes_with_caps
<< " / " << CInode::count() << " inodes have caps"
7373 << ", " << Capability::count() << " caps, " << caps_per_inode
<< " caps per inode"
7376 mds
->mlogger
->set(l_mdm_rss
, last
.get_rss());
7377 mds
->mlogger
->set(l_mdm_heap
, last
.get_heap());
7379 if (num_inodes_with_caps
> g_conf
->mds_cache_size
) {
7380 float ratio
= (float)g_conf
->mds_cache_size
* .9 / (float)num_inodes_with_caps
;
7382 last_recall_state
= ceph_clock_now();
7383 mds
->server
->recall_client_state(ratio
);
7387 // If the cache size had exceeded its limit, but we're back in bounds
7388 // now, free any unused pool memory so that our memory usage isn't
7389 // permanently bloated.
7390 if (exceeded_size_limit
7391 && CInode::count() <=
7392 g_conf
->mds_cache_size
* g_conf
->mds_health_cache_threshold
) {
7393 // Only do this once we are back in bounds: otherwise the releases would
7394 // slow down whatever process caused us to exceed bounds to begin with
7395 if (ceph_using_tcmalloc()) {
7396 dout(2) << "check_memory_usage: releasing unused space from tcmalloc"
7398 ceph_heap_release_free_memory();
7400 exceeded_size_limit
= false;
7406 // =========================================================================================
7409 class C_MDC_ShutdownCheck
: public MDCacheContext
{
7411 explicit C_MDC_ShutdownCheck(MDCache
*m
) : MDCacheContext(m
) {}
7412 void finish(int) override
{
7413 mdcache
->shutdown_check();
7417 void MDCache::shutdown_check()
7419 dout(0) << "shutdown_check at " << ceph_clock_now() << dendl
;
7422 char old_val
[32] = { 0 };
7424 g_conf
->get_val("debug_mds", &o
, sizeof(old_val
));
7425 g_conf
->set_val("debug_mds", "10");
7426 g_conf
->apply_changes(NULL
);
7428 g_conf
->set_val("debug_mds", old_val
);
7429 g_conf
->apply_changes(NULL
);
7430 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7433 dout(0) << "lru size now " << lru
.lru_get_size() << dendl
;
7434 dout(0) << "log len " << mds
->mdlog
->get_num_events() << dendl
;
7437 if (mds
->objecter
->is_active()) {
7438 dout(0) << "objecter still active" << dendl
;
7439 mds
->objecter
->dump_active();
7444 void MDCache::shutdown_start()
7446 dout(2) << "shutdown_start" << dendl
;
7448 if (g_conf
->mds_shutdown_check
)
7449 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7451 // g_conf->debug_mds = 10;
7456 bool MDCache::shutdown_pass()
7458 dout(7) << "shutdown_pass" << dendl
;
7460 if (mds
->is_stopped()) {
7461 dout(7) << " already shut down" << dendl
;
7468 if (!shutdown_export_strays()) {
7469 dout(7) << "waiting for strays to migrate" << dendl
;
7473 // drop our reference to our stray dir inode
7474 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7476 strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
7477 strays
[i
]->state_clear(CInode::STATE_STRAYPINNED
);
7478 strays
[i
]->put(CInode::PIN_STRAY
);
7479 strays
[i
]->put_stickydirs();
7485 dout(5) << "lru size now " << lru
.lru_get_size() << dendl
;
7488 int num_auth_subtree
= 0;
7489 if (!subtrees
.empty() &&
7490 mds
->get_nodeid() != 0 &&
7491 migrator
->get_export_queue_size() == 0) {
7492 dout(7) << "looking for subtrees to export to mds0" << dendl
;
7494 for (map
<CDir
*, set
<CDir
*> >::iterator it
= subtrees
.begin();
7495 it
!= subtrees
.end();
7497 CDir
*dir
= it
->first
;
7498 if (dir
->get_inode()->is_mdsdir())
7500 if (dir
->is_auth()) {
7502 if (dir
->is_frozen() ||
7503 dir
->is_freezing() ||
7504 dir
->is_ambiguous_dir_auth() ||
7505 dir
->state_test(CDir::STATE_EXPORTING
))
7510 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7512 mds_rank_t dest
= dir
->get_inode()->authority().first
;
7513 if (dest
> 0 && !mds
->mdsmap
->is_active(dest
))
7515 dout(7) << "sending " << *dir
<< " back to mds." << dest
<< dendl
;
7516 migrator
->export_dir_nicely(dir
, dest
);
7520 if (num_auth_subtree
> 0) {
7521 dout(7) << "still have " << num_auth_subtree
<< " auth subtrees" << dendl
;
7526 // close out any sessions (and open files!) before we try to trim the log, etc.
7527 if (mds
->sessionmap
.have_unclosed_sessions()) {
7528 if (!mds
->server
->terminating_sessions
)
7529 mds
->server
->terminate_sessions();
7533 CDir
*mydir
= myin
? myin
->get_dirfrag(frag_t()) : NULL
;
7534 if (mydir
&& !mydir
->is_subtree_root())
7537 // subtrees map not empty yet?
7538 if (subtrees
.size() > (mydir
? 1 : 0)) {
7539 dout(7) << "still have " << num_subtrees() << " subtrees" << dendl
;
7541 migrator
->show_importing();
7542 migrator
->show_exporting();
7543 if (!migrator
->is_importing() && !migrator
->is_exporting())
7547 assert(!migrator
->is_exporting());
7548 assert(!migrator
->is_importing());
7550 // make mydir subtree go away
7552 adjust_subtree_auth(mydir
, CDIR_AUTH_UNKNOWN
);
7553 remove_subtree(mydir
);
7555 assert(subtrees
.empty());
7557 // Still replicas of mydir?
7558 if ((mydir
!= NULL
) && mydir
->inode
->is_replicated()) {
7559 // We do this because otherwise acks to locks could come in after
7561 dout(7) << "waiting for mydir replicas to release: " << *mydir
<< dendl
;
7565 // flush what we can from the log
7566 mds
->mdlog
->trim(0);
7567 if (mds
->mdlog
->get_num_segments() > 1) {
7568 dout(7) << "still >1 segments, waiting for log to trim" << dendl
;
7572 // (only do this once!)
7573 if (!mds
->mdlog
->is_capped()) {
7574 dout(7) << "capping the log" << dendl
;
7579 if (!mds
->mdlog
->empty()) {
7580 dout(7) << "waiting for log to flush.. " << mds
->mdlog
->get_num_events()
7581 << " in " << mds
->mdlog
->get_num_segments() << " segments" << dendl
;
7585 if (!did_shutdown_log_cap
) {
7586 // flush journal header
7587 dout(7) << "writing header for (now-empty) journal" << dendl
;
7588 assert(mds
->mdlog
->empty());
7589 mds
->mdlog
->write_head(0);
7590 // NOTE: filer active checker below will block us until this completes.
7591 did_shutdown_log_cap
= true;
7596 if (mds
->objecter
->is_active()) {
7597 dout(7) << "objecter still active" << dendl
;
7598 mds
->objecter
->dump_active();
7602 // trim what we can from the cache
7603 if (lru
.lru_get_size() > 0) {
7604 dout(7) << "there's still stuff in the cache: " << lru
.lru_get_size() << dendl
;
7611 dout(2) << "shutdown done." << dendl
;
7615 bool MDCache::shutdown_export_strays()
7617 if (mds
->get_nodeid() == 0)
7620 dout(10) << "shutdown_export_strays" << dendl
;
7622 bool mds0_active
= mds
->mdsmap
->is_active(mds_rank_t(0));
7627 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7631 strays
[i
]->get_dirfrags(dfs
);
7634 for (std::list
<CDir
*>::iterator dfs_i
= dfs
.begin();
7635 dfs_i
!= dfs
.end(); ++dfs_i
)
7639 if (!dir
->is_complete()) {
7646 for (CDir::map_t::iterator p
= dir
->items
.begin();
7647 p
!= dir
->items
.end();
7649 CDentry
*dn
= p
->second
;
7650 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7657 if (dn
->state_test(CDentry::STATE_PURGING
)) {
7658 // Don't try to migrate anything that is actually
7659 // being purged right now
7663 if (shutdown_exported_strays
.count(dnl
->get_inode()->ino()) == 0) {
7664 shutdown_exported_strays
.insert(dnl
->get_inode()->ino());
7665 stray_manager
.migrate_stray(dn
, mds_rank_t(0)); // send to root!
7667 dout(10) << "already exporting " << *dn
<< dendl
;
7675 // ========= messaging ==============
7677 /* This function DOES put the passed message before returning */
7678 void MDCache::dispatch(Message
*m
)
7680 switch (m
->get_type()) {
7683 case MSG_MDS_RESOLVE
:
7684 handle_resolve(static_cast<MMDSResolve
*>(m
));
7686 case MSG_MDS_RESOLVEACK
:
7687 handle_resolve_ack(static_cast<MMDSResolveAck
*>(m
));
7691 case MSG_MDS_CACHEREJOIN
:
7692 handle_cache_rejoin(static_cast<MMDSCacheRejoin
*>(m
));
7695 case MSG_MDS_DISCOVER
:
7696 handle_discover(static_cast<MDiscover
*>(m
));
7698 case MSG_MDS_DISCOVERREPLY
:
7699 handle_discover_reply(static_cast<MDiscoverReply
*>(m
));
7702 case MSG_MDS_DIRUPDATE
:
7703 handle_dir_update(static_cast<MDirUpdate
*>(m
));
7706 case MSG_MDS_CACHEEXPIRE
:
7707 handle_cache_expire(static_cast<MCacheExpire
*>(m
));
7710 case MSG_MDS_DENTRYLINK
:
7711 handle_dentry_link(static_cast<MDentryLink
*>(m
));
7713 case MSG_MDS_DENTRYUNLINK
:
7714 handle_dentry_unlink(static_cast<MDentryUnlink
*>(m
));
7717 case MSG_MDS_FRAGMENTNOTIFY
:
7718 handle_fragment_notify(static_cast<MMDSFragmentNotify
*>(m
));
7721 case MSG_MDS_FINDINO
:
7722 handle_find_ino(static_cast<MMDSFindIno
*>(m
));
7724 case MSG_MDS_FINDINOREPLY
:
7725 handle_find_ino_reply(static_cast<MMDSFindInoReply
*>(m
));
7728 case MSG_MDS_OPENINO
:
7729 handle_open_ino(static_cast<MMDSOpenIno
*>(m
));
7731 case MSG_MDS_OPENINOREPLY
:
7732 handle_open_ino_reply(static_cast<MMDSOpenInoReply
*>(m
));
7736 derr
<< "cache unknown message " << m
->get_type() << dendl
;
7737 assert(0 == "cache unknown message");
7741 MDSInternalContextBase
*MDCache::_get_waiter(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
)
7744 dout(20) << "_get_waiter retryrequest" << dendl
;
7745 return new C_MDS_RetryRequest(this, mdr
);
7747 dout(20) << "_get_waiter retrymessage" << dendl
;
7748 return new C_MDS_RetryMessage(mds
, req
);
7754 int MDCache::path_traverse(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
, // who
7755 const filepath
& path
, // what
7756 vector
<CDentry
*> *pdnvec
, // result
7760 bool discover
= (onfail
== MDS_TRAVERSE_DISCOVER
);
7761 bool null_okay
= (onfail
== MDS_TRAVERSE_DISCOVERXLOCK
);
7762 bool forward
= (onfail
== MDS_TRAVERSE_FORWARD
);
7764 assert(mdr
|| req
|| fin
);
7765 assert(!forward
|| mdr
|| req
); // forward requires a request
7767 snapid_t snapid
= CEPH_NOSNAP
;
7769 mdr
->snapid
= snapid
;
7771 client_t client
= (mdr
&& mdr
->reqid
.name
.is_client()) ? mdr
->reqid
.name
.num() : -1;
7773 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse
);
7775 dout(7) << "traverse: opening base ino " << path
.get_ino() << " snap " << snapid
<< dendl
;
7776 CInode
*cur
= get_inode(path
.get_ino());
7778 if (MDS_INO_IS_MDSDIR(path
.get_ino()))
7779 open_foreign_mdsdir(path
.get_ino(), _get_waiter(mdr
, req
, fin
));
7781 //ceph_abort(); // hrm.. broken
7786 if (cur
->state_test(CInode::STATE_PURGING
))
7789 // make sure snaprealm are open...
7790 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
7791 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
7802 while (depth
< path
.depth()) {
7803 dout(12) << "traverse: path seg depth " << depth
<< " '" << path
[depth
]
7804 << "' snapid " << snapid
<< dendl
;
7806 if (!cur
->is_dir()) {
7807 dout(7) << "traverse: " << *cur
<< " not a dir " << dendl
;
7811 // walk into snapdir?
7812 if (path
[depth
].length() == 0) {
7813 dout(10) << "traverse: snapdir" << dendl
;
7816 snapid
= CEPH_SNAPDIR
;
7817 mdr
->snapid
= snapid
;
7821 // walk thru snapdir?
7822 if (snapid
== CEPH_SNAPDIR
) {
7825 SnapRealm
*realm
= cur
->find_snaprealm();
7826 snapid
= realm
->resolve_snapname(path
[depth
], cur
->ino());
7827 dout(10) << "traverse: snap " << path
[depth
] << " -> " << snapid
<< dendl
;
7830 mdr
->snapid
= snapid
;
7836 frag_t fg
= cur
->pick_dirfrag(path
[depth
]);
7837 CDir
*curdir
= cur
->get_dirfrag(fg
);
7839 if (cur
->is_auth()) {
7840 // parent dir frozen_dir?
7841 if (cur
->is_frozen()) {
7842 dout(7) << "traverse: " << *cur
<< " is frozen, waiting" << dendl
;
7843 cur
->add_waiter(CDir::WAIT_UNFREEZE
, _get_waiter(mdr
, req
, fin
));
7846 curdir
= cur
->get_or_open_dirfrag(this, fg
);
7849 dout(10) << "traverse: need dirfrag " << fg
<< ", doing discover from " << *cur
<< dendl
;
7850 discover_path(cur
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
7852 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
7858 #ifdef MDS_VERIFY_FRAGSTAT
7859 if (curdir
->is_complete())
7860 curdir
->verify_fragstat();
7865 if (curdir->is_frozen()) {
7867 // FIXME: traverse is allowed?
7868 dout(7) << "traverse: " << *curdir << " is frozen, waiting" << dendl;
7869 curdir->add_waiter(CDir::WAIT_UNFREEZE, _get_waiter(mdr, req, fin));
7870 if (onfinish) delete onfinish;
7875 // Before doing dirfrag->dn lookup, compare with DamageTable's
7876 // record of which dentries were unreadable
7877 if (mds
->damage_table
.is_dentry_damaged(curdir
, path
[depth
], snapid
)) {
7878 dout(4) << "traverse: stopped lookup at damaged dentry "
7879 << *curdir
<< "/" << path
[depth
] << " snap=" << snapid
<< dendl
;
7884 CDentry
*dn
= curdir
->lookup(path
[depth
], snapid
);
7885 CDentry::linkage_t
*dnl
= dn
? dn
->get_projected_linkage() : 0;
7887 // null and last_bit and xlocked by me?
7888 if (dnl
&& dnl
->is_null() && null_okay
) {
7889 dout(10) << "traverse: hit null dentry at tail of traverse, succeeding" << dendl
;
7891 pdnvec
->push_back(dn
);
7898 dn
->lock
.is_xlocked() &&
7899 dn
->lock
.get_xlock_by() != mdr
&&
7900 !dn
->lock
.can_read(client
) &&
7901 (dnl
->is_null() || forward
)) {
7902 dout(10) << "traverse: xlocked dentry at " << *dn
<< dendl
;
7903 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7904 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_lock
);
7905 mds
->mdlog
->flush();
7909 // can we conclude ENOENT?
7910 if (dnl
&& dnl
->is_null()) {
7911 if (dn
->lock
.can_read(client
) ||
7912 (dn
->lock
.is_xlocked() && dn
->lock
.get_xlock_by() == mdr
)) {
7913 dout(10) << "traverse: miss on null+readable dentry " << path
[depth
] << " " << *dn
<< dendl
;
7915 if (depth
== path
.depth() - 1)
7916 pdnvec
->push_back(dn
);
7918 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
7922 dout(10) << "miss on dentry " << *dn
<< ", can't read due to lock" << dendl
;
7923 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7928 if (dnl
&& !dnl
->is_null()) {
7929 CInode
*in
= dnl
->get_inode();
7931 // do we have inode?
7933 assert(dnl
->is_remote());
7935 in
= get_inode(dnl
->get_remote_ino());
7937 dout(7) << "linking in remote in " << *in
<< dendl
;
7938 dn
->link_remote(dnl
, in
);
7940 dout(7) << "remote link to " << dnl
->get_remote_ino() << ", which i don't have" << dendl
;
7941 assert(mdr
); // we shouldn't hit non-primary dentries doing a non-mdr traversal!
7942 if (mds
->damage_table
.is_remote_damaged(dnl
->get_remote_ino())) {
7943 dout(4) << "traverse: remote dentry points to damaged ino "
7947 open_remote_dentry(dn
, true, _get_waiter(mdr
, req
, fin
),
7948 (null_okay
&& depth
== path
.depth() - 1));
7949 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_remote_ino
);
7955 // make sure snaprealm are open...
7956 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
7957 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
7961 // add to trace, continue.
7964 pdnvec
->push_back(dn
);
7972 // MISS. dentry doesn't exist.
7973 dout(12) << "traverse: miss on dentry " << path
[depth
] << " in " << *curdir
<< dendl
;
7975 if (curdir
->is_auth()) {
7977 if (curdir
->is_complete() ||
7978 (snapid
== CEPH_NOSNAP
&&
7979 curdir
->has_bloom() &&
7980 !curdir
->is_in_bloom(path
[depth
]))){
7983 // instantiate a null dn?
7984 if (depth
< path
.depth()-1){
7985 dout(20) << " didn't traverse full path; not returning pdnvec" << dendl
;
7988 ceph_abort(); // should have fallen out in ->is_null() check above
7989 } else if (curdir
->is_frozen()) {
7990 dout(20) << " not adding null to frozen dir " << dendl
;
7991 } else if (snapid
< CEPH_MAXSNAP
) {
7992 dout(20) << " not adding null for snapid " << snapid
<< dendl
;
7994 // create a null dentry
7995 dn
= curdir
->add_null_dentry(path
[depth
]);
7996 dout(20) << " added null " << *dn
<< dendl
;
7999 pdnvec
->push_back(dn
);
8001 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
8006 // Check DamageTable for missing fragments before trying to fetch
8008 if (mds
->damage_table
.is_dirfrag_damaged(curdir
)) {
8009 dout(4) << "traverse: damaged dirfrag " << *curdir
8010 << ", blocking fetch" << dendl
;
8014 // directory isn't complete; reload
8015 dout(7) << "traverse: incomplete dir contents for " << *cur
<< ", fetching" << dendl
;
8017 curdir
->fetch(_get_waiter(mdr
, req
, fin
), path
[depth
]);
8018 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_dir_fetch
);
8022 // dirfrag/dentry is not mine.
8023 mds_authority_t dauth
= curdir
->authority();
8026 snapid
&& mdr
&& mdr
->client_request
&&
8027 (int)depth
< mdr
->client_request
->get_num_fwd()) {
8028 dout(7) << "traverse: snap " << snapid
<< " and depth " << depth
8029 << " < fwd " << mdr
->client_request
->get_num_fwd()
8030 << ", discovering instead of forwarding" << dendl
;
8034 if ((discover
|| null_okay
)) {
8035 dout(7) << "traverse: discover from " << path
[depth
] << " from " << *curdir
<< dendl
;
8036 discover_path(curdir
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
8038 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
8043 dout(7) << "traverse: not auth for " << path
<< " in " << *curdir
<< dendl
;
8045 if (curdir
->is_ambiguous_auth()) {
8047 dout(7) << "traverse: waiting for single auth in " << *curdir
<< dendl
;
8048 curdir
->add_waiter(CDir::WAIT_SINGLEAUTH
, _get_waiter(mdr
, req
, fin
));
8052 dout(7) << "traverse: forwarding, not auth for " << *curdir
<< dendl
;
8055 request_forward(mdr
, dauth
.first
);
8057 mds
->forward_message_mds(req
, dauth
.first
);
8059 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_forward
);
8060 assert(fin
== NULL
);
8065 ceph_abort(); // i shouldn't get here
8069 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_hit
);
8070 dout(10) << "path_traverse finish on snapid " << snapid
<< dendl
;
8072 assert(mdr
->snapid
== snapid
);
8076 CInode
*MDCache::cache_traverse(const filepath
& fp
)
8078 dout(10) << "cache_traverse " << fp
<< dendl
;
8082 in
= get_inode(fp
.get_ino());
8088 for (unsigned i
= 0; i
< fp
.depth(); i
++) {
8089 const string
& dname
= fp
[i
];
8090 frag_t fg
= in
->pick_dirfrag(dname
);
8091 dout(20) << " " << i
<< " " << dname
<< " frag " << fg
<< " from " << *in
<< dendl
;
8092 CDir
*curdir
= in
->get_dirfrag(fg
);
8095 CDentry
*dn
= curdir
->lookup(dname
, CEPH_NOSNAP
);
8098 in
= dn
->get_linkage()->get_inode();
8102 dout(10) << " got " << *in
<< dendl
;
8108 * open_remote_dir -- open up a remote dirfrag
8110 * @param diri base inode
8111 * @param approxfg approximate fragment.
8112 * @param fin completion callback
8114 void MDCache::open_remote_dirfrag(CInode
*diri
, frag_t approxfg
, MDSInternalContextBase
*fin
)
8116 dout(10) << "open_remote_dir on " << *diri
<< dendl
;
8118 assert(diri
->is_dir());
8119 assert(!diri
->is_auth());
8120 assert(diri
->get_dirfrag(approxfg
) == 0);
8122 mds_rank_t auth
= diri
->authority().first
;
8124 if (!mds
->is_cluster_degraded() ||
8125 mds
->mdsmap
->get_state(auth
) >= MDSMap::STATE_REJOIN
) {
8126 discover_dir_frag(diri
, approxfg
, fin
);
8128 // mds is down or recovering. forge a replica!
8129 forge_replica_dir(diri
, approxfg
, auth
);
8131 mds
->queue_waiter(fin
);
8137 * get_dentry_inode - get or open inode
8139 * @param dn the dentry
8140 * @param mdr current request
8142 * will return inode for primary, or link up/open up remote link's inode as necessary.
8143 * If it's not available right now, puts mdr on wait list and returns null.
8145 CInode
*MDCache::get_dentry_inode(CDentry
*dn
, MDRequestRef
& mdr
, bool projected
)
8147 CDentry::linkage_t
*dnl
;
8149 dnl
= dn
->get_projected_linkage();
8151 dnl
= dn
->get_linkage();
8153 assert(!dnl
->is_null());
8155 if (dnl
->is_primary())
8158 assert(dnl
->is_remote());
8159 CInode
*in
= get_inode(dnl
->get_remote_ino());
8161 dout(7) << "get_dentry_inode linking in remote in " << *in
<< dendl
;
8162 dn
->link_remote(dnl
, in
);
8165 dout(10) << "get_dentry_inode on remote dn, opening inode for " << *dn
<< dendl
;
8166 open_remote_dentry(dn
, projected
, new C_MDS_RetryRequest(this, mdr
));
8171 struct C_MDC_OpenRemoteDentry
: public MDCacheContext
{
8174 MDSInternalContextBase
*onfinish
;
8176 C_MDC_OpenRemoteDentry(MDCache
*m
, CDentry
*d
, inodeno_t i
, MDSInternalContextBase
*f
, bool wx
) :
8177 MDCacheContext(m
), dn(d
), ino(i
), onfinish(f
), want_xlocked(wx
) {}
8178 void finish(int r
) override
{
8179 mdcache
->_open_remote_dentry_finish(dn
, ino
, onfinish
, want_xlocked
, r
);
8183 void MDCache::open_remote_dentry(CDentry
*dn
, bool projected
, MDSInternalContextBase
*fin
, bool want_xlocked
)
8185 dout(10) << "open_remote_dentry " << *dn
<< dendl
;
8186 CDentry::linkage_t
*dnl
= projected
? dn
->get_projected_linkage() : dn
->get_linkage();
8187 inodeno_t ino
= dnl
->get_remote_ino();
8188 int64_t pool
= dnl
->get_remote_d_type() == DT_DIR
? mds
->mdsmap
->get_metadata_pool() : -1;
8190 new C_MDC_OpenRemoteDentry(this, dn
, ino
, fin
, want_xlocked
), true, want_xlocked
); // backtrace
8193 void MDCache::_open_remote_dentry_finish(CDentry
*dn
, inodeno_t ino
, MDSInternalContextBase
*fin
,
8194 bool want_xlocked
, int r
)
8197 dout(0) << "open_remote_dentry_finish bad remote dentry " << *dn
<< dendl
;
8198 dn
->state_set(CDentry::STATE_BADREMOTEINO
);
8201 CDir
*dir
= dn
->get_dir();
8203 dir
->get_inode()->make_path_string(path
);
8204 path
= path
+ "/" + dn
->get_name();
8207 bool fatal
= mds
->damage_table
.notify_remote_damaged(
8208 dn
->get_projected_linkage()->get_remote_ino(), path
);
8211 ceph_abort(); // unreachable, damaged() respawns us
8214 fin
->complete(r
< 0 ? r
: 0);
8218 void MDCache::make_trace(vector
<CDentry
*>& trace
, CInode
*in
)
8220 // empty trace if we're a base inode
8224 CInode
*parent
= in
->get_parent_inode();
8226 make_trace(trace
, parent
);
8228 CDentry
*dn
= in
->get_parent_dn();
8229 dout(15) << "make_trace adding " << *dn
<< dendl
;
8230 trace
.push_back(dn
);
8234 // -------------------------------------------------------------------------------
8235 // Open inode by inode number
8237 class C_IO_MDC_OpenInoBacktraceFetched
: public MDCacheIOContext
{
8241 C_IO_MDC_OpenInoBacktraceFetched(MDCache
*c
, inodeno_t i
) :
8242 MDCacheIOContext(c
), ino(i
) {}
8243 void finish(int r
) override
{
8244 mdcache
->_open_ino_backtrace_fetched(ino
, bl
, r
);
8248 struct C_MDC_OpenInoTraverseDir
: public MDCacheContext
{
8253 C_MDC_OpenInoTraverseDir(MDCache
*c
, inodeno_t i
, MMDSOpenIno
*m
, bool p
) :
8254 MDCacheContext(c
), ino(i
), msg(m
), parent(p
) {}
8255 void finish(int r
) override
{
8256 if (r
< 0 && !parent
)
8259 mdcache
->handle_open_ino(msg
, r
);
8262 assert(mdcache
->opening_inodes
.count(ino
));
8263 mdcache
->_open_ino_traverse_dir(ino
, mdcache
->opening_inodes
[ino
], r
);
8267 struct C_MDC_OpenInoParentOpened
: public MDCacheContext
{
8270 C_MDC_OpenInoParentOpened(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
8271 void finish(int r
) override
{
8272 mdcache
->_open_ino_parent_opened(ino
, r
);
8276 void MDCache::_open_ino_backtrace_fetched(inodeno_t ino
, bufferlist
& bl
, int err
)
8278 dout(10) << "_open_ino_backtrace_fetched ino " << ino
<< " errno " << err
<< dendl
;
8280 assert(opening_inodes
.count(ino
));
8281 open_ino_info_t
& info
= opening_inodes
[ino
];
8283 CInode
*in
= get_inode(ino
);
8285 dout(10) << " found cached " << *in
<< dendl
;
8286 open_ino_finish(ino
, info
, in
->authority().first
);
8290 inode_backtrace_t backtrace
;
8293 ::decode(backtrace
, bl
);
8294 } catch (const buffer::error
&decode_exc
) {
8295 derr
<< "corrupt backtrace on ino x0" << std::hex
<< ino
8296 << std::dec
<< ": " << decode_exc
<< dendl
;
8297 open_ino_finish(ino
, info
, -EIO
);
8300 if (backtrace
.pool
!= info
.pool
&& backtrace
.pool
!= -1) {
8301 dout(10) << " old object in pool " << info
.pool
8302 << ", retrying pool " << backtrace
.pool
<< dendl
;
8303 info
.pool
= backtrace
.pool
;
8304 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8305 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8306 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8307 new C_OnFinisher(fin
, mds
->finisher
));
8310 } else if (err
== -ENOENT
) {
8311 int64_t meta_pool
= mds
->mdsmap
->get_metadata_pool();
8312 if (info
.pool
!= meta_pool
) {
8313 dout(10) << " no object in pool " << info
.pool
8314 << ", retrying pool " << meta_pool
<< dendl
;
8315 info
.pool
= meta_pool
;
8316 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8317 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8318 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8319 new C_OnFinisher(fin
, mds
->finisher
));
8322 err
= 0; // backtrace.ancestors.empty() is checked below
8326 if (backtrace
.ancestors
.empty()) {
8327 dout(10) << " got empty backtrace " << dendl
;
8329 } else if (!info
.ancestors
.empty()) {
8330 if (info
.ancestors
[0] == backtrace
.ancestors
[0]) {
8331 dout(10) << " got same parents " << info
.ancestors
[0] << " 2 times" << dendl
;
8339 dout(0) << " failed to open ino " << ino
<< " err " << err
<< "/" << info
.last_err
<< dendl
;
8341 err
= info
.last_err
;
8342 open_ino_finish(ino
, info
, err
);
8346 dout(10) << " got backtrace " << backtrace
<< dendl
;
8347 info
.ancestors
= backtrace
.ancestors
;
8349 _open_ino_traverse_dir(ino
, info
, 0);
8352 void MDCache::_open_ino_parent_opened(inodeno_t ino
, int ret
)
8354 dout(10) << "_open_ino_parent_opened ino " << ino
<< " ret " << ret
<< dendl
;
8356 assert(opening_inodes
.count(ino
));
8357 open_ino_info_t
& info
= opening_inodes
[ino
];
8359 CInode
*in
= get_inode(ino
);
8361 dout(10) << " found cached " << *in
<< dendl
;
8362 open_ino_finish(ino
, info
, in
->authority().first
);
8366 if (ret
== mds
->get_nodeid()) {
8367 _open_ino_traverse_dir(ino
, info
, 0);
8370 mds_rank_t checked_rank
= mds_rank_t(ret
);
8371 info
.check_peers
= true;
8372 info
.auth_hint
= checked_rank
;
8373 info
.checked
.erase(checked_rank
);
8375 do_open_ino(ino
, info
, ret
);
8379 void MDCache::_open_ino_traverse_dir(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8381 dout(10) << __func__
<< ": ino " << ino
<< " ret " << ret
<< dendl
;
8383 CInode
*in
= get_inode(ino
);
8385 dout(10) << " found cached " << *in
<< dendl
;
8386 open_ino_finish(ino
, info
, in
->authority().first
);
8391 do_open_ino(ino
, info
, ret
);
8395 mds_rank_t hint
= info
.auth_hint
;
8396 ret
= open_ino_traverse_dir(ino
, NULL
, info
.ancestors
,
8397 info
.discover
, info
.want_xlocked
, &hint
);
8400 if (hint
!= mds
->get_nodeid())
8401 info
.auth_hint
= hint
;
8402 do_open_ino(ino
, info
, ret
);
8405 void MDCache::_open_ino_fetch_dir(inodeno_t ino
, MMDSOpenIno
*m
, CDir
*dir
, bool parent
)
8407 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
8408 assert(dir
->get_inode()->dirfragtree
.is_leaf(dir
->get_frag()));
8409 dir
->fetch(new C_MDC_OpenInoTraverseDir(this, ino
, m
, parent
));
8412 int MDCache::open_ino_traverse_dir(inodeno_t ino
, MMDSOpenIno
*m
,
8413 vector
<inode_backpointer_t
>& ancestors
,
8414 bool discover
, bool want_xlocked
, mds_rank_t
*hint
)
8416 dout(10) << "open_ino_traverse_dir ino " << ino
<< " " << ancestors
<< dendl
;
8418 for (unsigned i
= 0; i
< ancestors
.size(); i
++) {
8419 CInode
*diri
= get_inode(ancestors
[i
].dirino
);
8422 if (discover
&& MDS_INO_IS_MDSDIR(ancestors
[i
].dirino
)) {
8423 open_foreign_mdsdir(ancestors
[i
].dirino
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8429 if (diri
->state_test(CInode::STATE_REJOINUNDEF
)) {
8430 CDir
*dir
= diri
->get_parent_dir();
8431 while (dir
->state_test(CDir::STATE_REJOINUNDEF
) &&
8432 dir
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
))
8433 dir
= dir
->get_inode()->get_parent_dir();
8434 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8438 if (!diri
->is_dir()) {
8439 dout(10) << " " << *diri
<< " is not dir" << dendl
;
8445 string
&name
= ancestors
[i
].dname
;
8446 frag_t fg
= diri
->pick_dirfrag(name
);
8447 CDir
*dir
= diri
->get_dirfrag(fg
);
8449 if (diri
->is_auth()) {
8450 if (diri
->is_frozen()) {
8451 dout(10) << " " << *diri
<< " is frozen, waiting " << dendl
;
8452 diri
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8455 dir
= diri
->get_or_open_dirfrag(this, fg
);
8456 } else if (discover
) {
8457 open_remote_dirfrag(diri
, fg
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8462 inodeno_t next_ino
= i
> 0 ? ancestors
[i
- 1].dirino
: ino
;
8463 CDentry
*dn
= dir
->lookup(name
);
8464 CDentry::linkage_t
*dnl
= dn
? dn
->get_linkage() : NULL
;
8465 if (dir
->is_auth()) {
8466 if (dnl
&& dnl
->is_primary() &&
8467 dnl
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
)) {
8468 dout(10) << " fetching undef " << *dnl
->get_inode() << dendl
;
8469 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8473 if (!dnl
&& !dir
->is_complete() &&
8474 (!dir
->has_bloom() || dir
->is_in_bloom(name
))) {
8475 dout(10) << " fetching incomplete " << *dir
<< dendl
;
8476 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8480 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8483 } else if (discover
) {
8485 filepath
path(name
, 0);
8486 discover_path(dir
, CEPH_NOSNAP
, path
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0),
8487 (i
== 0 && want_xlocked
));
8490 if (dnl
->is_null() && !dn
->lock
.can_read(-1)) {
8491 dout(10) << " null " << *dn
<< " is not readable, waiting" << dendl
;
8492 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8495 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8501 *hint
= dir
? dir
->authority().first
: diri
->authority().first
;
8507 void MDCache::open_ino_finish(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8509 dout(10) << "open_ino_finish ino " << ino
<< " ret " << ret
<< dendl
;
8511 list
<MDSInternalContextBase
*> waiters
;
8512 waiters
.swap(info
.waiters
);
8513 opening_inodes
.erase(ino
);
8514 finish_contexts(g_ceph_context
, waiters
, ret
);
8517 void MDCache::do_open_ino(inodeno_t ino
, open_ino_info_t
& info
, int err
)
8519 if (err
< 0 && err
!= -EAGAIN
) {
8520 info
.checked
.clear();
8521 info
.checked
.insert(mds
->get_nodeid());
8522 info
.checking
= MDS_RANK_NONE
;
8523 info
.check_peers
= true;
8524 info
.fetch_backtrace
= true;
8525 if (info
.discover
) {
8526 info
.discover
= false;
8527 info
.ancestors
.clear();
8529 if (err
!= -ENOENT
&& err
!= -ENOTDIR
)
8530 info
.last_err
= err
;
8533 if (info
.check_peers
) {
8534 info
.check_peers
= false;
8535 info
.checking
= MDS_RANK_NONE
;
8536 do_open_ino_peer(ino
, info
);
8537 } else if (info
.fetch_backtrace
) {
8538 info
.check_peers
= true;
8539 info
.fetch_backtrace
= false;
8540 info
.checking
= mds
->get_nodeid();
8541 info
.checked
.clear();
8542 info
.checked
.insert(mds
->get_nodeid());
8543 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8544 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8545 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8546 new C_OnFinisher(fin
, mds
->finisher
));
8548 assert(!info
.ancestors
.empty());
8549 info
.checking
= mds
->get_nodeid();
8550 open_ino(info
.ancestors
[0].dirino
, mds
->mdsmap
->get_metadata_pool(),
8551 new C_MDC_OpenInoParentOpened(this, ino
), info
.want_replica
);
8555 void MDCache::do_open_ino_peer(inodeno_t ino
, open_ino_info_t
& info
)
8557 set
<mds_rank_t
> all
, active
;
8558 mds
->mdsmap
->get_mds_set(all
);
8559 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8560 if (mds
->get_state() == MDSMap::STATE_REJOIN
)
8561 mds
->mdsmap
->get_mds_set(active
, MDSMap::STATE_REJOIN
);
8563 dout(10) << "do_open_ino_peer " << ino
<< " active " << active
8564 << " all " << all
<< " checked " << info
.checked
<< dendl
;
8566 mds_rank_t peer
= MDS_RANK_NONE
;
8567 if (info
.auth_hint
>= 0) {
8568 if (active
.count(info
.auth_hint
)) {
8569 peer
= info
.auth_hint
;
8570 info
.auth_hint
= MDS_RANK_NONE
;
8573 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8574 if (*p
!= mds
->get_nodeid() && info
.checked
.count(*p
) == 0) {
8580 if (all
.size() > active
.size() && all
!= info
.checked
) {
8581 dout(10) << " waiting for more peers to be active" << dendl
;
8583 dout(10) << " all MDS peers have been checked " << dendl
;
8584 do_open_ino(ino
, info
, 0);
8587 info
.checking
= peer
;
8588 vector
<inode_backpointer_t
> *pa
= NULL
;
8589 // got backtrace from peer or backtrace just fetched
8590 if (info
.discover
|| !info
.fetch_backtrace
)
8591 pa
= &info
.ancestors
;
8592 mds
->send_message_mds(new MMDSOpenIno(info
.tid
, ino
, pa
), peer
);
8596 void MDCache::handle_open_ino(MMDSOpenIno
*m
, int err
)
8598 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
8599 mds
->get_want_state() != CEPH_MDS_STATE_REJOIN
) {
8604 dout(10) << "handle_open_ino " << *m
<< " err " << err
<< dendl
;
8606 inodeno_t ino
= m
->ino
;
8607 MMDSOpenInoReply
*reply
;
8608 CInode
*in
= get_inode(ino
);
8610 dout(10) << " have " << *in
<< dendl
;
8611 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, mds_rank_t(0));
8612 if (in
->is_auth()) {
8615 CDentry
*pdn
= in
->get_parent_dn();
8618 CInode
*diri
= pdn
->get_dir()->get_inode();
8619 reply
->ancestors
.push_back(inode_backpointer_t(diri
->ino(), pdn
->name
,
8620 in
->inode
.version
));
8624 reply
->hint
= in
->authority().first
;
8626 } else if (err
< 0) {
8627 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, MDS_RANK_NONE
, err
);
8629 mds_rank_t hint
= MDS_RANK_NONE
;
8630 int ret
= open_ino_traverse_dir(ino
, m
, m
->ancestors
, false, false, &hint
);
8633 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, hint
, ret
);
8635 m
->get_connection()->send_message(reply
);
8639 void MDCache::handle_open_ino_reply(MMDSOpenInoReply
*m
)
8641 dout(10) << "handle_open_ino_reply " << *m
<< dendl
;
8643 inodeno_t ino
= m
->ino
;
8644 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8645 auto it
= opening_inodes
.find(ino
);
8646 if (it
!= opening_inodes
.end() && it
->second
.checking
== from
) {
8647 open_ino_info_t
& info
= it
->second
;
8648 info
.checking
= MDS_RANK_NONE
;
8649 info
.checked
.insert(from
);
8651 CInode
*in
= get_inode(ino
);
8653 dout(10) << " found cached " << *in
<< dendl
;
8654 open_ino_finish(ino
, info
, in
->authority().first
);
8655 } else if (!m
->ancestors
.empty()) {
8656 dout(10) << " found ino " << ino
<< " on mds." << from
<< dendl
;
8657 if (!info
.want_replica
) {
8658 open_ino_finish(ino
, info
, from
);
8663 info
.ancestors
= m
->ancestors
;
8664 info
.auth_hint
= from
;
8665 info
.checking
= mds
->get_nodeid();
8666 info
.discover
= true;
8667 _open_ino_traverse_dir(ino
, info
, 0);
8668 } else if (m
->error
) {
8669 dout(10) << " error " << m
->error
<< " from mds." << from
<< dendl
;
8670 do_open_ino(ino
, info
, m
->error
);
8672 if (m
->hint
>= 0 && m
->hint
!= mds
->get_nodeid()) {
8673 info
.auth_hint
= m
->hint
;
8674 info
.checked
.erase(m
->hint
);
8676 do_open_ino_peer(ino
, info
);
8682 void MDCache::kick_open_ino_peers(mds_rank_t who
)
8684 dout(10) << "kick_open_ino_peers mds." << who
<< dendl
;
8686 for (map
<inodeno_t
, open_ino_info_t
>::iterator p
= opening_inodes
.begin();
8687 p
!= opening_inodes
.end();
8689 open_ino_info_t
& info
= p
->second
;
8690 if (info
.checking
== who
) {
8691 dout(10) << " kicking ino " << p
->first
<< " who was checking mds." << who
<< dendl
;
8692 info
.checking
= MDS_RANK_NONE
;
8693 do_open_ino_peer(p
->first
, info
);
8694 } else if (info
.checking
== MDS_RANK_NONE
) {
8695 dout(10) << " kicking ino " << p
->first
<< " who was waiting" << dendl
;
8696 do_open_ino_peer(p
->first
, info
);
8701 void MDCache::open_ino(inodeno_t ino
, int64_t pool
, MDSInternalContextBase
* fin
,
8702 bool want_replica
, bool want_xlocked
)
8704 dout(10) << "open_ino " << ino
<< " pool " << pool
<< " want_replica "
8705 << want_replica
<< dendl
;
8707 if (opening_inodes
.count(ino
)) {
8708 open_ino_info_t
& info
= opening_inodes
[ino
];
8710 info
.want_replica
= true;
8711 if (want_xlocked
&& !info
.want_xlocked
) {
8712 if (!info
.ancestors
.empty()) {
8713 CInode
*diri
= get_inode(info
.ancestors
[0].dirino
);
8715 frag_t fg
= diri
->pick_dirfrag(info
.ancestors
[0].dname
);
8716 CDir
*dir
= diri
->get_dirfrag(fg
);
8717 if (dir
&& !dir
->is_auth()) {
8718 filepath
path(info
.ancestors
[0].dname
, 0);
8719 discover_path(dir
, CEPH_NOSNAP
, path
, NULL
, true);
8723 info
.want_xlocked
= true;
8726 info
.waiters
.push_back(fin
);
8728 open_ino_info_t
& info
= opening_inodes
[ino
];
8729 info
.checked
.insert(mds
->get_nodeid());
8730 info
.want_replica
= want_replica
;
8731 info
.want_xlocked
= want_xlocked
;
8732 info
.tid
= ++open_ino_last_tid
;
8733 info
.pool
= pool
>= 0 ? pool
: default_file_layout
.pool_id
;
8734 info
.waiters
.push_back(fin
);
8735 do_open_ino(ino
, info
, 0);
8739 /* ---------------------------- */
8742 * search for a given inode on MDS peers. optionally start with the given node.
8746 - recover from mds node failure, recovery
8750 void MDCache::find_ino_peers(inodeno_t ino
, MDSInternalContextBase
*c
, mds_rank_t hint
)
8752 dout(5) << "find_ino_peers " << ino
<< " hint " << hint
<< dendl
;
8753 assert(!have_inode(ino
));
8755 ceph_tid_t tid
= ++find_ino_peer_last_tid
;
8756 find_ino_peer_info_t
& fip
= find_ino_peer
[tid
];
8761 fip
.checked
.insert(mds
->get_nodeid());
8762 _do_find_ino_peer(fip
);
8765 void MDCache::_do_find_ino_peer(find_ino_peer_info_t
& fip
)
8767 set
<mds_rank_t
> all
, active
;
8768 mds
->mdsmap
->get_mds_set(all
);
8769 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8771 dout(10) << "_do_find_ino_peer " << fip
.tid
<< " " << fip
.ino
8772 << " active " << active
<< " all " << all
8773 << " checked " << fip
.checked
8776 mds_rank_t m
= MDS_RANK_NONE
;
8777 if (fip
.hint
>= 0) {
8779 fip
.hint
= MDS_RANK_NONE
;
8781 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8782 if (*p
!= mds
->get_nodeid() &&
8783 fip
.checked
.count(*p
) == 0) {
8788 if (m
== MDS_RANK_NONE
) {
8789 if (all
.size() > active
.size()) {
8790 dout(10) << "_do_find_ino_peer waiting for more peers to be active" << dendl
;
8792 dout(10) << "_do_find_ino_peer failed on " << fip
.ino
<< dendl
;
8793 fip
.fin
->complete(-ESTALE
);
8794 find_ino_peer
.erase(fip
.tid
);
8798 mds
->send_message_mds(new MMDSFindIno(fip
.tid
, fip
.ino
), m
);
8802 void MDCache::handle_find_ino(MMDSFindIno
*m
)
8804 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
8809 dout(10) << "handle_find_ino " << *m
<< dendl
;
8810 MMDSFindInoReply
*r
= new MMDSFindInoReply(m
->tid
);
8811 CInode
*in
= get_inode(m
->ino
);
8813 in
->make_path(r
->path
);
8814 dout(10) << " have " << r
->path
<< " " << *in
<< dendl
;
8816 m
->get_connection()->send_message(r
);
8821 void MDCache::handle_find_ino_reply(MMDSFindInoReply
*m
)
8823 map
<ceph_tid_t
, find_ino_peer_info_t
>::iterator p
= find_ino_peer
.find(m
->tid
);
8824 if (p
!= find_ino_peer
.end()) {
8825 dout(10) << "handle_find_ino_reply " << *m
<< dendl
;
8826 find_ino_peer_info_t
& fip
= p
->second
;
8829 if (get_inode(fip
.ino
)) {
8830 dout(10) << "handle_find_ino_reply successfully found " << fip
.ino
<< dendl
;
8831 mds
->queue_waiter(fip
.fin
);
8832 find_ino_peer
.erase(p
);
8837 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8838 if (fip
.checking
== from
)
8839 fip
.checking
= MDS_RANK_NONE
;
8840 fip
.checked
.insert(from
);
8842 if (!m
->path
.empty()) {
8844 vector
<CDentry
*> trace
;
8845 MDRequestRef null_ref
;
8846 int r
= path_traverse(null_ref
, m
, NULL
, m
->path
, &trace
, NULL
, MDS_TRAVERSE_DISCOVER
);
8849 dout(0) << "handle_find_ino_reply failed with " << r
<< " on " << m
->path
8850 << ", retrying" << dendl
;
8851 fip
.checked
.clear();
8852 _do_find_ino_peer(fip
);
8855 _do_find_ino_peer(fip
);
8858 dout(10) << "handle_find_ino_reply tid " << m
->tid
<< " dne" << dendl
;
8863 void MDCache::kick_find_ino_peers(mds_rank_t who
)
8865 // find_ino_peers requests we should move on from
8866 for (map
<ceph_tid_t
,find_ino_peer_info_t
>::iterator p
= find_ino_peer
.begin();
8867 p
!= find_ino_peer
.end();
8869 find_ino_peer_info_t
& fip
= p
->second
;
8870 if (fip
.checking
== who
) {
8871 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was checking mds." << who
<< dendl
;
8872 fip
.checking
= MDS_RANK_NONE
;
8873 _do_find_ino_peer(fip
);
8874 } else if (fip
.checking
== MDS_RANK_NONE
) {
8875 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was waiting" << dendl
;
8876 _do_find_ino_peer(fip
);
8881 /* ---------------------------- */
8883 int MDCache::get_num_client_requests()
8886 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
8887 p
!= active_requests
.end();
8889 MDRequestRef
& mdr
= p
->second
;
8890 if (mdr
->reqid
.name
.is_client() && !mdr
->is_slave())
8896 /* This function takes over the reference to the passed Message */
8897 MDRequestRef
MDCache::request_start(MClientRequest
*req
)
8899 // did we win a forward race against a slave?
8900 if (active_requests
.count(req
->get_reqid())) {
8901 MDRequestRef
& mdr
= active_requests
[req
->get_reqid()];
8903 if (mdr
->is_slave()) {
8904 dout(10) << "request_start already had " << *mdr
<< ", waiting for finish" << dendl
;
8905 mdr
->more()->waiting_for_finish
.push_back(new C_MDS_RetryMessage(mds
, req
));
8907 dout(10) << "request_start already processing " << *mdr
<< ", dropping new msg" << dendl
;
8910 return MDRequestRef();
8913 // register new client request
8914 MDRequestImpl::Params params
;
8915 params
.reqid
= req
->get_reqid();
8916 params
.attempt
= req
->get_num_fwd();
8917 params
.client_req
= req
;
8918 params
.initiated
= req
->get_recv_stamp();
8919 params
.throttled
= req
->get_throttle_stamp();
8920 params
.all_read
= req
->get_recv_complete_stamp();
8921 params
.dispatched
= req
->get_dispatch_stamp();
8924 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
8925 active_requests
[params
.reqid
] = mdr
;
8926 mdr
->set_op_stamp(req
->get_stamp());
8927 dout(7) << "request_start " << *mdr
<< dendl
;
8931 MDRequestRef
MDCache::request_start_slave(metareqid_t ri
, __u32 attempt
, Message
*m
)
8933 int by
= m
->get_source().num();
8934 MDRequestImpl::Params params
;
8936 params
.attempt
= attempt
;
8937 params
.triggering_slave_req
= m
;
8938 params
.slave_to
= by
;
8939 params
.initiated
= m
->get_recv_stamp();
8940 params
.throttled
= m
->get_throttle_stamp();
8941 params
.all_read
= m
->get_recv_complete_stamp();
8942 params
.dispatched
= m
->get_dispatch_stamp();
8944 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
8945 assert(active_requests
.count(mdr
->reqid
) == 0);
8946 active_requests
[mdr
->reqid
] = mdr
;
8947 dout(7) << "request_start_slave " << *mdr
<< " by mds." << by
<< dendl
;
8951 MDRequestRef
MDCache::request_start_internal(int op
)
8953 MDRequestImpl::Params params
;
8954 params
.reqid
.name
= entity_name_t::MDS(mds
->get_nodeid());
8955 params
.reqid
.tid
= mds
->issue_tid();
8956 params
.initiated
= ceph_clock_now();
8957 params
.internal_op
= op
;
8959 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
8961 assert(active_requests
.count(mdr
->reqid
) == 0);
8962 active_requests
[mdr
->reqid
] = mdr
;
8963 dout(7) << "request_start_internal " << *mdr
<< " op " << op
<< dendl
;
8967 MDRequestRef
MDCache::request_get(metareqid_t rid
)
8969 ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.find(rid
);
8970 assert(p
!= active_requests
.end());
8971 dout(7) << "request_get " << rid
<< " " << *p
->second
<< dendl
;
8975 void MDCache::request_finish(MDRequestRef
& mdr
)
8977 dout(7) << "request_finish " << *mdr
<< dendl
;
8978 mdr
->mark_event("finishing request");
8981 if (mdr
->has_more() && mdr
->more()->slave_commit
) {
8982 Context
*fin
= mdr
->more()->slave_commit
;
8983 mdr
->more()->slave_commit
= 0;
8986 mdr
->aborted
= false;
8988 mdr
->more()->slave_rolling_back
= true;
8991 mdr
->committing
= true;
8993 fin
->complete(ret
); // this must re-call request_finish.
8997 request_cleanup(mdr
);
9001 void MDCache::request_forward(MDRequestRef
& mdr
, mds_rank_t who
, int port
)
9003 mdr
->mark_event("forwarding request");
9004 if (mdr
->client_request
&& mdr
->client_request
->get_source().is_client()) {
9005 dout(7) << "request_forward " << *mdr
<< " to mds." << who
<< " req "
9006 << *mdr
->client_request
<< dendl
;
9007 mds
->forward_message_mds(mdr
->client_request
, who
);
9008 mdr
->client_request
= 0;
9009 if (mds
->logger
) mds
->logger
->inc(l_mds_forward
);
9010 } else if (mdr
->internal_op
>= 0) {
9011 dout(10) << "request_forward on internal op; cancelling" << dendl
;
9012 mdr
->internal_op_finish
->complete(-EXDEV
);
9014 dout(7) << "request_forward drop " << *mdr
<< " req " << *mdr
->client_request
9015 << " was from mds" << dendl
;
9017 request_cleanup(mdr
);
9021 void MDCache::dispatch_request(MDRequestRef
& mdr
)
9023 if (mdr
->client_request
) {
9024 mds
->server
->dispatch_client_request(mdr
);
9025 } else if (mdr
->slave_request
) {
9026 mds
->server
->dispatch_slave_request(mdr
);
9028 switch (mdr
->internal_op
) {
9029 case CEPH_MDS_OP_FRAGMENTDIR
:
9030 dispatch_fragment_dir(mdr
);
9032 case CEPH_MDS_OP_EXPORTDIR
:
9033 migrator
->dispatch_export_dir(mdr
, 0);
9035 case CEPH_MDS_OP_ENQUEUE_SCRUB
:
9036 enqueue_scrub_work(mdr
);
9038 case CEPH_MDS_OP_FLUSH
:
9039 flush_dentry_work(mdr
);
9041 case CEPH_MDS_OP_REPAIR_FRAGSTATS
:
9042 repair_dirfrag_stats_work(mdr
);
9044 case CEPH_MDS_OP_REPAIR_INODESTATS
:
9045 repair_inode_stats_work(mdr
);
9054 void MDCache::request_drop_foreign_locks(MDRequestRef
& mdr
)
9056 if (!mdr
->has_more())
9060 // (will implicitly drop remote dn pins)
9061 for (set
<mds_rank_t
>::iterator p
= mdr
->more()->slaves
.begin();
9062 p
!= mdr
->more()->slaves
.end();
9064 MMDSSlaveRequest
*r
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
9065 MMDSSlaveRequest::OP_FINISH
);
9067 if (mdr
->killed
&& !mdr
->committing
) {
9069 } else if (mdr
->more()->srcdn_auth_mds
== *p
&&
9070 mdr
->more()->inode_import
.length() > 0) {
9071 // information about rename imported caps
9072 r
->inode_export
.claim(mdr
->more()->inode_import
);
9075 mds
->send_message_mds(r
, *p
);
9078 /* strip foreign xlocks out of lock lists, since the OP_FINISH drops them
9079 * implicitly. Note that we don't call the finishers -- there shouldn't
9080 * be any on a remote lock and the request finish wakes up all
9081 * the waiters anyway! */
9082 set
<SimpleLock
*>::iterator p
= mdr
->xlocks
.begin();
9083 while (p
!= mdr
->xlocks
.end()) {
9084 if ((*p
)->get_parent()->is_auth())
9087 dout(10) << "request_drop_foreign_locks forgetting lock " << **p
9088 << " on " << *(*p
)->get_parent() << dendl
;
9090 mdr
->locks
.erase(*p
);
9091 mdr
->xlocks
.erase(p
++);
9095 map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
9096 while (q
!= mdr
->remote_wrlocks
.end()) {
9097 dout(10) << "request_drop_foreign_locks forgetting remote_wrlock " << *q
->first
9098 << " on mds." << q
->second
9099 << " on " << *(q
->first
)->get_parent() << dendl
;
9100 mdr
->locks
.erase(q
->first
);
9101 mdr
->remote_wrlocks
.erase(q
++);
9104 mdr
->more()->slaves
.clear(); /* we no longer have requests out to them, and
9105 * leaving them in can cause double-notifies as
9106 * this function can get called more than once */
9109 void MDCache::request_drop_non_rdlocks(MDRequestRef
& mdr
)
9111 request_drop_foreign_locks(mdr
);
9112 mds
->locker
->drop_non_rdlocks(mdr
.get());
9115 void MDCache::request_drop_locks(MDRequestRef
& mdr
)
9117 request_drop_foreign_locks(mdr
);
9118 mds
->locker
->drop_locks(mdr
.get());
9121 void MDCache::request_cleanup(MDRequestRef
& mdr
)
9123 dout(15) << "request_cleanup " << *mdr
<< dendl
;
9125 if (mdr
->has_more()) {
9126 if (mdr
->more()->is_ambiguous_auth
)
9127 mdr
->clear_ambiguous_auth();
9128 if (!mdr
->more()->waiting_for_finish
.empty())
9129 mds
->queue_waiters(mdr
->more()->waiting_for_finish
);
9132 request_drop_locks(mdr
);
9134 // drop (local) auth pins
9135 mdr
->drop_local_auth_pins();
9138 for (set
<CInode
*>::iterator p
= mdr
->stickydirs
.begin();
9139 p
!= mdr
->stickydirs
.end();
9141 (*p
)->put_stickydirs();
9143 mds
->locker
->kick_cap_releases(mdr
);
9148 // remove from session
9149 mdr
->item_session_request
.remove_myself();
9152 active_requests
.erase(mdr
->reqid
);
9157 mdr
->mark_event("cleaned up request");
9160 void MDCache::request_kill(MDRequestRef
& mdr
)
9162 // rollback slave requests is tricky. just let the request proceed.
9163 if (mdr
->done_locking
&& mdr
->has_more() &&
9164 (!mdr
->more()->witnessed
.empty() || !mdr
->more()->waiting_on_slave
.empty())) {
9165 dout(10) << "request_kill " << *mdr
<< " -- already started slave requests, no-op" << dendl
;
9167 assert(mdr
->used_prealloc_ino
== 0);
9168 assert(mdr
->prealloc_inos
.empty());
9170 mdr
->session
= NULL
;
9171 mdr
->item_session_request
.remove_myself();
9176 mdr
->mark_event("killing request");
9178 if (mdr
->committing
) {
9179 dout(10) << "request_kill " << *mdr
<< " -- already committing, no-op" << dendl
;
9181 dout(10) << "request_kill " << *mdr
<< dendl
;
9182 request_cleanup(mdr
);
9186 // -------------------------------------------------------------------------------
9189 struct C_MDC_snaprealm_create_finish
: public MDCacheLogContext
{
9193 C_MDC_snaprealm_create_finish(MDCache
*c
, MDRequestRef
& m
,
9194 MutationRef
& mu
, CInode
*i
) :
9195 MDCacheLogContext(c
), mdr(m
), mut(mu
), in(i
) {}
9196 void finish(int r
) override
{
9197 mdcache
->_snaprealm_create_finish(mdr
, mut
, in
);
9201 void MDCache::snaprealm_create(MDRequestRef
& mdr
, CInode
*in
)
9203 dout(10) << "snaprealm_create " << *in
<< dendl
;
9204 assert(!in
->snaprealm
);
9207 if (!mdr
->more()->stid
) {
9208 mds
->snapclient
->prepare_create_realm(in
->ino(), &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
9209 new C_MDS_RetryRequest(this, mdr
));
9213 MutationRef
mut(new MutationImpl());
9214 mut
->ls
= mds
->mdlog
->get_current_segment();
9215 EUpdate
*le
= new EUpdate(mds
->mdlog
, "snaprealm_create");
9216 mds
->mdlog
->start_entry(le
);
9218 le
->metablob
.add_table_transaction(TABLE_SNAP
, mdr
->more()->stid
);
9220 inode_t
*pi
= in
->project_inode();
9221 pi
->version
= in
->pre_dirty();
9222 pi
->rstat
.rsnaprealms
++;
9224 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9228 sr_t
*newsnap
= in
->project_snaprealm(seq
);
9230 newsnap
->last_created
= seq
;
9232 predirty_journal_parents(mut
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
9233 journal_cow_inode(mut
, &le
->metablob
, in
);
9234 le
->metablob
.add_primary_dentry(in
->get_projected_parent_dn(), in
, true);
9236 mds
->server
->submit_mdlog_entry(le
,
9237 new C_MDC_snaprealm_create_finish(this, mdr
,
9240 mds
->mdlog
->flush();
9244 void MDCache::do_realm_invalidate_and_update_notify(CInode
*in
, int snapop
, bool nosend
)
9246 dout(10) << "do_realm_invalidate_and_update_notify " << *in
->snaprealm
<< " " << *in
<< dendl
;
9248 vector
<inodeno_t
> split_inos
;
9249 vector
<inodeno_t
> split_realms
;
9251 if (snapop
== CEPH_SNAP_OP_SPLIT
) {
9252 // notify clients of update|split
9253 for (elist
<CInode
*>::iterator p
= in
->snaprealm
->inodes_with_caps
.begin(member_offset(CInode
, item_caps
));
9255 split_inos
.push_back((*p
)->ino());
9257 for (set
<SnapRealm
*>::iterator p
= in
->snaprealm
->open_children
.begin();
9258 p
!= in
->snaprealm
->open_children
.end();
9260 split_realms
.push_back((*p
)->inode
->ino());
9264 in
->snaprealm
->build_snap_trace(snapbl
);
9266 set
<SnapRealm
*> past_children
;
9267 map
<client_t
, MClientSnap
*> updates
;
9269 q
.push_back(in
->snaprealm
);
9270 while (!q
.empty()) {
9271 SnapRealm
*realm
= q
.front();
9274 dout(10) << " realm " << *realm
<< " on " << *realm
->inode
<< dendl
;
9275 realm
->invalidate_cached_snaps();
9277 for (map
<client_t
, xlist
<Capability
*>* >::iterator p
= realm
->client_caps
.begin();
9278 p
!= realm
->client_caps
.end();
9280 assert(!p
->second
->empty());
9281 if (!nosend
&& updates
.count(p
->first
) == 0) {
9282 MClientSnap
*update
= new MClientSnap(snapop
);
9283 update
->head
.split
= in
->ino();
9284 update
->split_inos
= split_inos
;
9285 update
->split_realms
= split_realms
;
9286 update
->bl
= snapbl
;
9287 updates
[p
->first
] = update
;
9291 if (snapop
== CEPH_SNAP_OP_UPDATE
|| snapop
== CEPH_SNAP_OP_DESTROY
) {
9292 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9293 p
!= realm
->open_past_children
.end();
9295 past_children
.insert(*p
);
9298 // notify for active children, too.
9299 dout(10) << " " << realm
<< " open_children are " << realm
->open_children
<< dendl
;
9300 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9301 p
!= realm
->open_children
.end();
9307 send_snaps(updates
);
9309 // notify past children and their descendants if we update/delete old snapshots
9310 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9311 p
!= past_children
.end();
9315 while (!q
.empty()) {
9316 SnapRealm
*realm
= q
.front();
9319 realm
->invalidate_cached_snaps();
9321 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9322 p
!= realm
->open_children
.end();
9324 if (past_children
.count(*p
) == 0)
9328 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9329 p
!= realm
->open_past_children
.end();
9331 if (past_children
.count(*p
) == 0) {
9333 past_children
.insert(*p
);
9338 if (snapop
== CEPH_SNAP_OP_DESTROY
) {
9339 // eval stray inodes if we delete snapshot from their past ancestor snaprealm
9340 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9341 p
!= past_children
.end();
9343 maybe_eval_stray((*p
)->inode
, true);
9347 void MDCache::_snaprealm_create_finish(MDRequestRef
& mdr
, MutationRef
& mut
, CInode
*in
)
9349 dout(10) << "_snaprealm_create_finish " << *in
<< dendl
;
9352 in
->pop_and_dirty_projected_inode(mut
->ls
);
9354 mds
->locker
->drop_locks(mut
.get());
9357 // tell table we've committed
9358 mds
->snapclient
->commit(mdr
->more()->stid
, mut
->ls
);
9361 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9365 in
->open_snaprealm();
9366 in
->snaprealm
->srnode
.seq
= seq
;
9367 in
->snaprealm
->srnode
.created
= seq
;
9368 bool ok
= in
->snaprealm
->_open_parents(NULL
);
9371 do_realm_invalidate_and_update_notify(in
, CEPH_SNAP_OP_SPLIT
);
9374 static int count = 5;
9376 ceph_abort(); // hack test test **********
9380 mdr
->more()->stid
= 0; // caller will likely need to reuse this
9381 dispatch_request(mdr
);
9385 // -------------------------------------------------------------------------------
9388 struct C_MDC_RetryScanStray
: public MDCacheContext
{
9390 C_MDC_RetryScanStray(MDCache
*c
, dirfrag_t n
) : MDCacheContext(c
), next(n
) { }
9391 void finish(int r
) override
{
9392 mdcache
->scan_stray_dir(next
);
9396 void MDCache::scan_stray_dir(dirfrag_t next
)
9398 dout(10) << "scan_stray_dir " << next
<< dendl
;
9401 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
9402 if (strays
[i
]->ino() < next
.ino
)
9404 strays
[i
]->get_dirfrags(ls
);
9407 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
9409 if (dir
->dirfrag() < next
)
9411 if (!dir
->is_complete()) {
9412 dir
->fetch(new C_MDC_RetryScanStray(this, dir
->dirfrag()));
9415 for (CDir::map_t::iterator q
= dir
->items
.begin(); q
!= dir
->items
.end(); ++q
) {
9416 CDentry
*dn
= q
->second
;
9417 dn
->state_set(CDentry::STATE_STRAY
);
9418 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
9419 if (dnl
->is_primary()) {
9420 CInode
*in
= dnl
->get_inode();
9421 if (in
->inode
.nlink
== 0)
9422 in
->state_set(CInode::STATE_ORPHAN
);
9423 maybe_eval_stray(in
);
9430 * If a remote dentry refers to an inode whose primary
9431 * dentry is a stray, then evaluate the inode for purging if
9432 * we have the auth copy, or migrate the stray to use if we
9435 void MDCache::eval_remote(CDentry
*remote_dn
)
9438 dout(10) << __func__
<< " " << *remote_dn
<< dendl
;
9440 CDentry::linkage_t
*dnl
= remote_dn
->get_projected_linkage();
9441 assert(dnl
->is_remote());
9442 CInode
*in
= dnl
->get_inode();
9445 dout(20) << __func__
<< ": no inode, cannot evaluate" << dendl
;
9449 if (remote_dn
->last
!= CEPH_NOSNAP
) {
9450 dout(20) << __func__
<< ": snap dentry, cannot evaluate" << dendl
;
9455 CDentry
*primary_dn
= in
->get_projected_parent_dn();
9456 assert(primary_dn
!= NULL
);
9457 if (primary_dn
->get_dir()->get_inode()->is_stray()) {
9458 if (in
->is_auth()) {
9459 dout(20) << __func__
<< ": have auth for inode, evaluating" << dendl
;
9461 stray_manager
.eval_remote_stray(primary_dn
, remote_dn
);
9463 dout(20) << __func__
<< ": do not have auth for inode, migrating " << dendl
;
9465 * Inodes get filed into a stray dentry when a client unlinks
9466 * the primary DN for them. However, that doesn't mean there
9467 * isn't a remote DN still in the world. The remote DN just
9468 * ends up pointing at a stray. Strays can pretty much live
9469 * forever in this scenario.
9471 * Therefore, we have a special behaviour here: migrate a stray
9472 * to <me> when <I> handle a client request with a trace referring
9473 * to a stray inode on another MDS.
9475 stray_manager
.migrate_stray(primary_dn
, mds
->get_nodeid());
9478 dout(20) << __func__
<< ": inode's primary dn not stray" << dendl
;
9482 void MDCache::fetch_backtrace(inodeno_t ino
, int64_t pool
, bufferlist
& bl
, Context
*fin
)
9484 object_t oid
= CInode::get_object_name(ino
, frag_t(), "");
9485 mds
->objecter
->getxattr(oid
, object_locator_t(pool
), "parent", CEPH_NOSNAP
, &bl
, 0, fin
);
9492 // ========================================================================================
9496 - for all discovers (except base_inos, e.g. root, stray), waiters are attached
9497 to the parent metadata object in the cache (pinning it).
9499 - all discovers are tracked by tid, so that we can ignore potentially dup replies.
9503 void MDCache::_send_discover(discover_info_t
& d
)
9505 MDiscover
*dis
= new MDiscover(d
.ino
, d
.frag
, d
.snap
, d
.want_path
,
9506 d
.want_base_dir
, d
.want_xlocked
);
9507 dis
->set_tid(d
.tid
);
9508 mds
->send_message_mds(dis
, d
.mds
);
9511 void MDCache::discover_base_ino(inodeno_t want_ino
,
9512 MDSInternalContextBase
*onfinish
,
9515 dout(7) << "discover_base_ino " << want_ino
<< " from mds." << from
<< dendl
;
9516 if (waiting_for_base_ino
[from
].count(want_ino
) == 0) {
9517 discover_info_t
& d
= _create_discover(from
);
9521 waiting_for_base_ino
[from
][want_ino
].push_back(onfinish
);
9525 void MDCache::discover_dir_frag(CInode
*base
,
9527 MDSInternalContextBase
*onfinish
,
9531 from
= base
->authority().first
;
9533 dirfrag_t
df(base
->ino(), approx_fg
);
9534 dout(7) << "discover_dir_frag " << df
9535 << " from mds." << from
<< dendl
;
9537 if (!base
->is_waiting_for_dir(approx_fg
) || !onfinish
) {
9538 discover_info_t
& d
= _create_discover(from
);
9540 d
.ino
= base
->ino();
9542 d
.want_base_dir
= true;
9547 base
->add_dir_waiter(approx_fg
, onfinish
);
9550 struct C_MDC_RetryDiscoverPath
: public MDCacheContext
{
9555 C_MDC_RetryDiscoverPath(MDCache
*c
, CInode
*b
, snapid_t s
, filepath
&p
, mds_rank_t f
) :
9556 MDCacheContext(c
), base(b
), snapid(s
), path(p
), from(f
) {}
9557 void finish(int r
) override
{
9558 mdcache
->discover_path(base
, snapid
, path
, 0, from
);
9562 void MDCache::discover_path(CInode
*base
,
9565 MDSInternalContextBase
*onfinish
,
9570 from
= base
->authority().first
;
9572 dout(7) << "discover_path " << base
->ino() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9573 << (want_xlocked
? " want_xlocked":"")
9576 if (base
->is_ambiguous_auth()) {
9577 dout(10) << " waiting for single auth on " << *base
<< dendl
;
9579 onfinish
= new C_MDC_RetryDiscoverPath(this, base
, snap
, want_path
, from
);
9580 base
->add_waiter(CInode::WAIT_SINGLEAUTH
, onfinish
);
9582 } else if (from
== mds
->get_nodeid()) {
9583 list
<MDSInternalContextBase
*> finished
;
9584 base
->take_waiting(CInode::WAIT_DIR
, finished
);
9585 mds
->queue_waiters(finished
);
9589 frag_t fg
= base
->pick_dirfrag(want_path
[0]);
9590 if ((want_xlocked
&& want_path
.depth() == 1) ||
9591 !base
->is_waiting_for_dir(fg
) || !onfinish
) {
9592 discover_info_t
& d
= _create_discover(from
);
9593 d
.ino
= base
->ino();
9597 d
.want_path
= want_path
;
9598 d
.want_base_dir
= true;
9599 d
.want_xlocked
= want_xlocked
;
9605 base
->add_dir_waiter(fg
, onfinish
);
9608 struct C_MDC_RetryDiscoverPath2
: public MDCacheContext
{
9612 C_MDC_RetryDiscoverPath2(MDCache
*c
, CDir
*b
, snapid_t s
, filepath
&p
) :
9613 MDCacheContext(c
), base(b
), snapid(s
), path(p
) {}
9614 void finish(int r
) override
{
9615 mdcache
->discover_path(base
, snapid
, path
, 0);
9619 void MDCache::discover_path(CDir
*base
,
9622 MDSInternalContextBase
*onfinish
,
9625 mds_rank_t from
= base
->authority().first
;
9627 dout(7) << "discover_path " << base
->dirfrag() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9628 << (want_xlocked
? " want_xlocked":"")
9631 if (base
->is_ambiguous_auth()) {
9632 dout(7) << " waiting for single auth on " << *base
<< dendl
;
9634 onfinish
= new C_MDC_RetryDiscoverPath2(this, base
, snap
, want_path
);
9635 base
->add_waiter(CDir::WAIT_SINGLEAUTH
, onfinish
);
9637 } else if (from
== mds
->get_nodeid()) {
9638 list
<MDSInternalContextBase
*> finished
;
9639 base
->take_sub_waiting(finished
);
9640 mds
->queue_waiters(finished
);
9644 if ((want_xlocked
&& want_path
.depth() == 1) ||
9645 !base
->is_waiting_for_dentry(want_path
[0].c_str(), snap
) || !onfinish
) {
9646 discover_info_t
& d
= _create_discover(from
);
9647 d
.ino
= base
->ino();
9649 d
.frag
= base
->get_frag();
9651 d
.want_path
= want_path
;
9652 d
.want_base_dir
= false;
9653 d
.want_xlocked
= want_xlocked
;
9659 base
->add_dentry_waiter(want_path
[0], snap
, onfinish
);
9662 void MDCache::kick_discovers(mds_rank_t who
)
9664 for (map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.begin();
9665 p
!= discovers
.end();
9667 if (p
->second
.mds
!= who
)
9669 _send_discover(p
->second
);
9674 /* This function DOES put the passed message before returning */
9675 void MDCache::handle_discover(MDiscover
*dis
)
9677 mds_rank_t whoami
= mds
->get_nodeid();
9678 mds_rank_t from
= mds_rank_t(dis
->get_source().num());
9680 assert(from
!= whoami
);
9682 if (mds
->get_state() <= MDSMap::STATE_REJOIN
) {
9683 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
9684 mds
->get_want_state() != CEPH_MDS_STATE_REJOIN
) {
9689 // proceed if requester is in the REJOIN stage, the request is from parallel_fetch().
9690 // delay processing request from survivor because we may not yet choose lock states.
9691 if (!mds
->mdsmap
->is_rejoin(from
)) {
9692 dout(0) << "discover_reply not yet active(|still rejoining), delaying" << dendl
;
9693 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, dis
));
9700 MDiscoverReply
*reply
= new MDiscoverReply(dis
);
9702 snapid_t snapid
= dis
->get_snapid();
9705 if (MDS_INO_IS_BASE(dis
->get_base_ino()) &&
9706 !dis
->wants_base_dir() && dis
->get_want().depth() == 0) {
9708 dout(7) << "handle_discover from mds." << from
9709 << " wants base + " << dis
->get_want().get_path()
9710 << " snap " << snapid
9713 cur
= get_inode(dis
->get_base_ino());
9717 reply
->starts_with
= MDiscoverReply::INODE
;
9718 replicate_inode(cur
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9719 dout(10) << "added base " << *cur
<< dendl
;
9722 // there's a base inode
9723 cur
= get_inode(dis
->get_base_ino(), snapid
);
9724 if (!cur
&& snapid
!= CEPH_NOSNAP
) {
9725 cur
= get_inode(dis
->get_base_ino());
9726 if (cur
&& !cur
->is_multiversion())
9727 cur
= NULL
; // nope!
9731 dout(7) << "handle_discover mds." << from
9732 << " don't have base ino " << dis
->get_base_ino() << "." << snapid
9734 if (!dis
->wants_base_dir() && dis
->get_want().depth() > 0)
9735 reply
->set_error_dentry(dis
->get_dentry(0));
9736 reply
->set_flag_error_dir();
9737 } else if (dis
->wants_base_dir()) {
9738 dout(7) << "handle_discover mds." << from
9739 << " wants basedir+" << dis
->get_want().get_path()
9743 dout(7) << "handle_discover mds." << from
9744 << " wants " << dis
->get_want().get_path()
9753 // do some fidgeting to include a dir if they asked for the base dir, or just root.
9754 for (unsigned i
= 0;
9755 cur
&& (i
< dis
->get_want().depth() || dis
->get_want().depth() == 0);
9758 // -- figure out the dir
9760 // is *cur even a dir at all?
9761 if (!cur
->is_dir()) {
9762 dout(7) << *cur
<< " not a dir" << dendl
;
9763 reply
->set_flag_error_dir();
9769 if (dis
->get_want().depth()) {
9771 fg
= cur
->pick_dirfrag(dis
->get_dentry(i
));
9773 // requester explicity specified the frag
9774 assert(dis
->wants_base_dir() || MDS_INO_IS_BASE(dis
->get_base_ino()));
9775 fg
= dis
->get_base_dir_frag();
9776 if (!cur
->dirfragtree
.is_leaf(fg
))
9777 fg
= cur
->dirfragtree
[fg
.value()];
9779 CDir
*curdir
= cur
->get_dirfrag(fg
);
9781 if ((!curdir
&& !cur
->is_auth()) ||
9782 (curdir
&& !curdir
->is_auth())) {
9785 * ONLY set flag if empty!!
9786 * otherwise requester will wake up waiter(s) _and_ continue with discover,
9787 * resulting in duplicate discovers in flight,
9788 * which can wreak havoc when discovering rename srcdn (which may move)
9791 if (reply
->is_empty()) {
9792 // only hint if empty.
9793 // someday this could be better, but right now the waiter logic isn't smart enough.
9797 dout(7) << " not dirfrag auth, setting dir_auth_hint for " << *curdir
<< dendl
;
9798 reply
->set_dir_auth_hint(curdir
->authority().first
);
9800 dout(7) << " dirfrag not open, not inode auth, setting dir_auth_hint for "
9802 reply
->set_dir_auth_hint(cur
->authority().first
);
9805 // note error dentry, if any
9806 // NOTE: important, as it allows requester to issue an equivalent discover
9807 // to whomever we hint at.
9808 if (dis
->get_want().depth() > i
)
9809 reply
->set_error_dentry(dis
->get_dentry(i
));
9815 if (!curdir
) { // open dir?
9816 if (cur
->is_frozen()) {
9817 if (!reply
->is_empty()) {
9818 dout(7) << *cur
<< " is frozen, non-empty reply, stopping" << dendl
;
9821 dout(7) << *cur
<< " is frozen, empty reply, waiting" << dendl
;
9822 cur
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9826 curdir
= cur
->get_or_open_dirfrag(this, fg
);
9827 } else if (curdir
->is_frozen_tree() ||
9828 (curdir
->is_frozen_dir() && fragment_are_all_frozen(curdir
))) {
9829 if (dis
->wants_base_dir() && dis
->get_base_dir_frag() != curdir
->get_frag()) {
9830 dout(7) << *curdir
<< " is frozen, dirfrag mismatch, stopping" << dendl
;
9831 reply
->set_flag_error_dir();
9834 if (!reply
->is_empty()) {
9835 dout(7) << *curdir
<< " is frozen, non-empty reply, stopping" << dendl
;
9838 dout(7) << *curdir
<< " is frozen, empty reply, waiting" << dendl
;
9839 curdir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9845 if (curdir
->get_version() == 0) {
9846 // fetch newly opened dir
9847 } else if (reply
->is_empty() && !dis
->wants_base_dir()) {
9848 dout(7) << "handle_discover not adding unwanted base dir " << *curdir
<< dendl
;
9849 // make sure the base frag is correct, though, in there was a refragment since the
9850 // original request was sent.
9851 reply
->set_base_dir_frag(curdir
->get_frag());
9853 assert(!curdir
->is_ambiguous_auth()); // would be frozen.
9854 if (!reply
->trace
.length())
9855 reply
->starts_with
= MDiscoverReply::DIR;
9856 replicate_dir(curdir
, from
, reply
->trace
);
9857 dout(7) << "handle_discover added dir " << *curdir
<< dendl
;
9862 if (curdir
->get_version() == 0) {
9863 // fetch newly opened dir
9864 } else if (dis
->get_want().depth() > 0) {
9866 dn
= curdir
->lookup(dis
->get_dentry(i
), snapid
);
9872 if (!curdir
->is_complete()) {
9874 dout(7) << "incomplete dir contents for " << *curdir
<< ", fetching" << dendl
;
9875 if (reply
->is_empty()) {
9877 curdir
->fetch(new C_MDS_RetryMessage(mds
, dis
),
9878 dis
->wants_base_dir() && curdir
->get_version() == 0);
9882 // initiate fetch, but send what we have so far
9889 dout(7) << "dentry " << dis
->get_dentry(i
) << " dne, returning null in "
9890 << *curdir
<< dendl
;
9891 dn
= curdir
->add_null_dentry(dis
->get_dentry(i
));
9895 CDentry::linkage_t
*dnl
= dn
->get_linkage();
9898 // ...always block on non-tail items (they are unrelated)
9899 // ...allow xlocked tail disocvery _only_ if explicitly requested
9900 bool tailitem
= (dis
->get_want().depth() == 0) || (i
== dis
->get_want().depth() - 1);
9901 if (dn
->lock
.is_xlocked()) {
9902 // is this the last (tail) item in the discover traversal?
9903 if (tailitem
&& dis
->wants_xlocked()) {
9904 dout(7) << "handle_discover allowing discovery of xlocked tail " << *dn
<< dendl
;
9905 } else if (reply
->is_empty()) {
9906 dout(7) << "handle_discover blocking on xlocked " << *dn
<< dendl
;
9907 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDS_RetryMessage(mds
, dis
));
9911 dout(7) << "handle_discover non-empty reply, xlocked tail " << *dn
<< dendl
;
9917 if (dnl
->is_primary() && dnl
->get_inode()->is_frozen_inode()) {
9918 if (tailitem
&& dis
->wants_xlocked()) {
9919 dout(7) << "handle_discover allowing discovery of frozen tail " << *dnl
->get_inode() << dendl
;
9920 } else if (reply
->is_empty()) {
9921 dout(7) << *dnl
->get_inode() << " is frozen, empty reply, waiting" << dendl
;
9922 dnl
->get_inode()->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9926 dout(7) << *dnl
->get_inode() << " is frozen, non-empty reply, stopping" << dendl
;
9932 if (!reply
->trace
.length())
9933 reply
->starts_with
= MDiscoverReply::DENTRY
;
9934 replicate_dentry(dn
, from
, reply
->trace
);
9935 dout(7) << "handle_discover added dentry " << *dn
<< dendl
;
9937 if (!dnl
->is_primary()) break; // stop on null or remote link.
9940 CInode
*next
= dnl
->get_inode();
9941 assert(next
->is_auth());
9943 replicate_inode(next
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9944 dout(7) << "handle_discover added inode " << *next
<< dendl
;
9946 // descend, keep going.
9952 assert(!reply
->is_empty());
9953 dout(7) << "handle_discover sending result back to asker mds." << from
<< dendl
;
9954 mds
->send_message(reply
, dis
->get_connection());
9959 /* This function DOES put the passed message before returning */
9960 void MDCache::handle_discover_reply(MDiscoverReply
*m
)
9963 if (mds->get_state() < MDSMap::STATE_ACTIVE) {
9964 dout(0) << "discover_reply NOT ACTIVE YET" << dendl;
9969 dout(7) << "discover_reply " << *m
<< dendl
;
9970 if (m
->is_flag_error_dir())
9971 dout(7) << " flag error, dir" << dendl
;
9972 if (m
->is_flag_error_dn())
9973 dout(7) << " flag error, dentry = " << m
->get_error_dentry() << dendl
;
9975 list
<MDSInternalContextBase
*> finished
, error
;
9976 mds_rank_t from
= mds_rank_t(m
->get_source().num());
9979 CInode
*cur
= get_inode(m
->get_base_ino());
9980 bufferlist::iterator p
= m
->trace
.begin();
9982 int next
= m
->starts_with
;
9984 // decrement discover counters
9986 map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.find(m
->get_tid());
9987 if (p
!= discovers
.end()) {
9988 dout(10) << " found tid " << m
->get_tid() << dendl
;
9991 dout(10) << " tid " << m
->get_tid() << " not found, must be dup reply" << dendl
;
9995 // discover may start with an inode
9996 if (!p
.end() && next
== MDiscoverReply::INODE
) {
9997 cur
= add_replica_inode(p
, NULL
, finished
);
9998 dout(7) << "discover_reply got base inode " << *cur
<< dendl
;
9999 assert(cur
->is_base());
10001 next
= MDiscoverReply::DIR;
10004 if (cur
->is_base() &&
10005 waiting_for_base_ino
[from
].count(cur
->ino())) {
10006 finished
.swap(waiting_for_base_ino
[from
][cur
->ino()]);
10007 waiting_for_base_ino
[from
].erase(cur
->ino());
10012 // loop over discover results.
10013 // indexes follow each ([[dir] dentry] inode)
10014 // can start, end with any type.
10019 if (next
== MDiscoverReply::DIR) {
10020 curdir
= add_replica_dir(p
, cur
, mds_rank_t(m
->get_source().num()), finished
);
10021 if (cur
->ino() == m
->get_base_ino() && curdir
->get_frag() != m
->get_base_dir_frag()) {
10022 assert(m
->get_wanted_base_dir());
10023 cur
->take_dir_waiting(m
->get_base_dir_frag(), finished
);
10026 // note: this can only happen our first way around this loop.
10027 if (p
.end() && m
->is_flag_error_dn()) {
10028 fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10029 curdir
= cur
->get_dirfrag(fg
);
10031 curdir
= cur
->get_dirfrag(m
->get_base_dir_frag());
10038 CDentry
*dn
= add_replica_dentry(p
, curdir
, finished
);
10044 cur
= add_replica_inode(p
, dn
, finished
);
10046 next
= MDiscoverReply::DIR;
10050 // or dir_auth hint?
10051 if (m
->is_flag_error_dir() && !cur
->is_dir()) {
10053 cur
->take_waiting(CInode::WAIT_DIR
, error
);
10054 } else if (m
->is_flag_error_dir() || m
->get_dir_auth_hint() != CDIR_AUTH_UNKNOWN
) {
10055 mds_rank_t who
= m
->get_dir_auth_hint();
10056 if (who
== mds
->get_nodeid()) who
= -1;
10058 dout(7) << " dir_auth_hint is " << m
->get_dir_auth_hint() << dendl
;
10060 frag_t fg
= m
->get_base_dir_frag();
10061 CDir
*dir
= cur
->get_dirfrag(fg
);
10063 if (m
->get_wanted_base_dir()) {
10064 if (cur
->is_waiting_for_dir(fg
)) {
10065 if (cur
->is_auth())
10066 cur
->take_waiting(CInode::WAIT_DIR
, finished
);
10067 else if (dir
|| !cur
->dirfragtree
.is_leaf(fg
))
10068 cur
->take_dir_waiting(fg
, finished
);
10070 discover_dir_frag(cur
, fg
, 0, who
);
10072 dout(7) << " doing nothing, nobody is waiting for dir" << dendl
;
10076 if (m
->get_error_dentry().length()) {
10078 if (dir
&& dir
->is_waiting_for_dentry(m
->get_error_dentry(), m
->get_wanted_snapid())) {
10079 if (dir
->is_auth() || dir
->lookup(m
->get_error_dentry())) {
10080 dir
->take_dentry_waiting(m
->get_error_dentry(), m
->get_wanted_snapid(),
10081 m
->get_wanted_snapid(), finished
);
10083 filepath
relpath(m
->get_error_dentry(), 0);
10084 discover_path(dir
, m
->get_wanted_snapid(), relpath
, 0, m
->get_wanted_xlocked());
10087 dout(7) << " doing nothing, have dir but nobody is waiting on dentry "
10088 << m
->get_error_dentry() << dendl
;
10093 finish_contexts(g_ceph_context
, error
, -ENOENT
); // finish errors directly
10094 mds
->queue_waiters(finished
);
10102 // ----------------------------
10105 CDir
*MDCache::add_replica_dir(bufferlist::iterator
& p
, CInode
*diri
, mds_rank_t from
,
10106 list
<MDSInternalContextBase
*>& finished
)
10111 assert(diri
->ino() == df
.ino
);
10113 // add it (_replica_)
10114 CDir
*dir
= diri
->get_dirfrag(df
.frag
);
10117 // had replica. update w/ new nonce.
10118 dir
->decode_replica(p
);
10119 dout(7) << "add_replica_dir had " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10121 // force frag to leaf in the diri tree
10122 if (!diri
->dirfragtree
.is_leaf(df
.frag
)) {
10123 dout(7) << "add_replica_dir forcing frag " << df
.frag
<< " to leaf in the fragtree "
10124 << diri
->dirfragtree
<< dendl
;
10125 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, df
.frag
);
10129 dir
= diri
->add_dirfrag( new CDir(diri
, df
.frag
, this, false) );
10130 dir
->decode_replica(p
);
10132 // is this a dir_auth delegation boundary?
10133 if (from
!= diri
->authority().first
||
10134 diri
->is_ambiguous_auth() ||
10136 adjust_subtree_auth(dir
, from
);
10138 dout(7) << "add_replica_dir added " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10141 diri
->take_dir_waiting(df
.frag
, finished
);
10147 CDir
*MDCache::forge_replica_dir(CInode
*diri
, frag_t fg
, mds_rank_t from
)
10149 assert(mds
->mdsmap
->get_state(from
) < MDSMap::STATE_REJOIN
);
10151 // forge a replica.
10152 CDir
*dir
= diri
->add_dirfrag( new CDir(diri
, fg
, this, false) );
10154 // i'm assuming this is a subtree root.
10155 adjust_subtree_auth(dir
, from
);
10157 dout(7) << "forge_replica_dir added " << *dir
<< " while mds." << from
<< " is down" << dendl
;
10162 CDentry
*MDCache::add_replica_dentry(bufferlist::iterator
& p
, CDir
*dir
, list
<MDSInternalContextBase
*>& finished
)
10169 CDentry
*dn
= dir
->lookup(name
, last
);
10173 dn
->decode_replica(p
, false);
10174 dout(7) << "add_replica_dentry had " << *dn
<< dendl
;
10176 dn
= dir
->add_null_dentry(name
, 1 /* this will get updated below */, last
);
10177 dn
->decode_replica(p
, true);
10178 dout(7) << "add_replica_dentry added " << *dn
<< dendl
;
10181 dir
->take_dentry_waiting(name
, dn
->first
, dn
->last
, finished
);
10186 CInode
*MDCache::add_replica_inode(bufferlist::iterator
& p
, CDentry
*dn
, list
<MDSInternalContextBase
*>& finished
)
10192 CInode
*in
= get_inode(ino
, last
);
10194 in
= new CInode(this, false, 1, last
);
10195 in
->decode_replica(p
, true);
10197 if (in
->ino() == MDS_INO_ROOT
)
10198 in
->inode_auth
.first
= 0;
10199 else if (in
->is_mdsdir())
10200 in
->inode_auth
.first
= in
->ino() - MDS_INO_MDSDIR_OFFSET
;
10201 dout(10) << "add_replica_inode added " << *in
<< dendl
;
10203 assert(dn
->get_linkage()->is_null());
10204 dn
->dir
->link_primary_inode(dn
, in
);
10207 in
->decode_replica(p
, false);
10208 dout(10) << "add_replica_inode had " << *in
<< dendl
;
10212 if (!dn
->get_linkage()->is_primary() || dn
->get_linkage()->get_inode() != in
)
10213 dout(10) << "add_replica_inode different linkage in dentry " << *dn
<< dendl
;
10220 void MDCache::replicate_stray(CDentry
*straydn
, mds_rank_t who
, bufferlist
& bl
)
10222 uint64_t features
= mds
->mdsmap
->get_up_features();
10223 replicate_inode(get_myin(), who
, bl
, features
);
10224 replicate_dir(straydn
->get_dir()->inode
->get_parent_dn()->get_dir(), who
, bl
);
10225 replicate_dentry(straydn
->get_dir()->inode
->get_parent_dn(), who
, bl
);
10226 replicate_inode(straydn
->get_dir()->inode
, who
, bl
, features
);
10227 replicate_dir(straydn
->get_dir(), who
, bl
);
10228 replicate_dentry(straydn
, who
, bl
);
10231 CDentry
*MDCache::add_replica_stray(bufferlist
&bl
, mds_rank_t from
)
10233 list
<MDSInternalContextBase
*> finished
;
10234 bufferlist::iterator p
= bl
.begin();
10236 CInode
*mdsin
= add_replica_inode(p
, NULL
, finished
);
10237 CDir
*mdsdir
= add_replica_dir(p
, mdsin
, from
, finished
);
10238 CDentry
*straydirdn
= add_replica_dentry(p
, mdsdir
, finished
);
10239 CInode
*strayin
= add_replica_inode(p
, straydirdn
, finished
);
10240 CDir
*straydir
= add_replica_dir(p
, strayin
, from
, finished
);
10241 CDentry
*straydn
= add_replica_dentry(p
, straydir
, finished
);
10242 if (!finished
.empty())
10243 mds
->queue_waiters(finished
);
10249 int MDCache::send_dir_updates(CDir
*dir
, bool bcast
)
10251 // this is an FYI, re: replication
10253 set
<mds_rank_t
> who
;
10255 mds
->get_mds_map()->get_active_mds_set(who
);
10257 for (compact_map
<mds_rank_t
,unsigned>::iterator p
= dir
->replicas_begin();
10258 p
!= dir
->replicas_end();
10260 who
.insert(p
->first
);
10263 dout(7) << "sending dir_update on " << *dir
<< " bcast " << bcast
<< " to " << who
<< dendl
;
10266 dir
->inode
->make_path(path
);
10268 mds_rank_t whoami
= mds
->get_nodeid();
10269 for (set
<mds_rank_t
>::iterator it
= who
.begin();
10272 if (*it
== whoami
) continue;
10273 //if (*it == except) continue;
10274 dout(7) << "sending dir_update on " << *dir
<< " to " << *it
<< dendl
;
10276 mds
->send_message_mds(new MDirUpdate(mds
->get_nodeid(),
10288 /* This function DOES put the passed message before returning */
10289 void MDCache::handle_dir_update(MDirUpdate
*m
)
10291 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10293 dout(5) << "dir_update on " << m
->get_dirfrag() << ", don't have it" << dendl
;
10296 if (m
->should_discover()) {
10298 // this is key to avoid a fragtree update race, among other things.
10299 m
->tried_discover();
10300 vector
<CDentry
*> trace
;
10302 filepath path
= m
->get_path();
10303 dout(5) << "trying discover on dir_update for " << path
<< dendl
;
10304 MDRequestRef null_ref
;
10305 int r
= path_traverse(null_ref
, m
, NULL
, path
, &trace
, &in
, MDS_TRAVERSE_DISCOVER
);
10309 open_remote_dirfrag(in
, m
->get_dirfrag().frag
,
10310 new C_MDS_RetryMessage(mds
, m
));
10319 dout(5) << "dir_update on " << *dir
<< dendl
;
10320 dir
->dir_rep
= m
->get_dir_rep();
10321 dir
->dir_rep_by
= m
->get_dir_rep_by();
10333 void MDCache::send_dentry_link(CDentry
*dn
, MDRequestRef
& mdr
)
10335 dout(7) << "send_dentry_link " << *dn
<< dendl
;
10337 CDir
*subtree
= get_subtree_root(dn
->get_dir());
10338 for (compact_map
<mds_rank_t
,unsigned>::iterator p
= dn
->replicas_begin();
10339 p
!= dn
->replicas_end();
10341 // don't tell (rename) witnesses; they already know
10342 if (mdr
.get() && mdr
->more()->witnessed
.count(p
->first
))
10344 if (mds
->mdsmap
->get_state(p
->first
) < MDSMap::STATE_REJOIN
||
10345 (mds
->mdsmap
->get_state(p
->first
) == MDSMap::STATE_REJOIN
&&
10346 rejoin_gather
.count(p
->first
)))
10348 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10349 MDentryLink
*m
= new MDentryLink(subtree
->dirfrag(), dn
->get_dir()->dirfrag(),
10350 dn
->name
, dnl
->is_primary());
10351 if (dnl
->is_primary()) {
10352 dout(10) << " primary " << *dnl
->get_inode() << dendl
;
10353 replicate_inode(dnl
->get_inode(), p
->first
, m
->bl
,
10354 mds
->mdsmap
->get_up_features());
10355 } else if (dnl
->is_remote()) {
10356 inodeno_t ino
= dnl
->get_remote_ino();
10357 __u8 d_type
= dnl
->get_remote_d_type();
10358 dout(10) << " remote " << ino
<< " " << d_type
<< dendl
;
10359 ::encode(ino
, m
->bl
);
10360 ::encode(d_type
, m
->bl
);
10362 ceph_abort(); // aie, bad caller!
10363 mds
->send_message_mds(m
, p
->first
);
10367 /* This function DOES put the passed message before returning */
10368 void MDCache::handle_dentry_link(MDentryLink
*m
)
10371 CDentry
*dn
= NULL
;
10372 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10374 dout(7) << "handle_dentry_link don't have dirfrag " << m
->get_dirfrag() << dendl
;
10376 dn
= dir
->lookup(m
->get_dn());
10378 dout(7) << "handle_dentry_link don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10380 dout(7) << "handle_dentry_link on " << *dn
<< dendl
;
10381 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10383 assert(!dn
->is_auth());
10384 assert(dnl
->is_null());
10388 bufferlist::iterator p
= m
->bl
.begin();
10389 list
<MDSInternalContextBase
*> finished
;
10391 if (m
->get_is_primary()) {
10393 add_replica_inode(p
, dn
, finished
);
10395 // remote link, easy enough.
10399 ::decode(d_type
, p
);
10400 dir
->link_remote_inode(dn
, ino
, d_type
);
10406 if (!finished
.empty())
10407 mds
->queue_waiters(finished
);
10416 void MDCache::send_dentry_unlink(CDentry
*dn
, CDentry
*straydn
, MDRequestRef
& mdr
)
10418 dout(10) << "send_dentry_unlink " << *dn
<< dendl
;
10419 // share unlink news with replicas
10420 set
<mds_rank_t
> replicas
;
10421 dn
->list_replicas(replicas
);
10423 straydn
->list_replicas(replicas
);
10424 for (set
<mds_rank_t
>::iterator it
= replicas
.begin();
10425 it
!= replicas
.end();
10427 // don't tell (rmdir) witnesses; they already know
10428 if (mdr
.get() && mdr
->more()->witnessed
.count(*it
))
10431 if (mds
->mdsmap
->get_state(*it
) < MDSMap::STATE_REJOIN
||
10432 (mds
->mdsmap
->get_state(*it
) == MDSMap::STATE_REJOIN
&&
10433 rejoin_gather
.count(*it
)))
10436 MDentryUnlink
*unlink
= new MDentryUnlink(dn
->get_dir()->dirfrag(), dn
->name
);
10438 replicate_stray(straydn
, *it
, unlink
->straybl
);
10439 mds
->send_message_mds(unlink
, *it
);
10443 /* This function DOES put the passed message before returning */
10444 void MDCache::handle_dentry_unlink(MDentryUnlink
*m
)
10447 CDentry
*straydn
= NULL
;
10448 if (m
->straybl
.length())
10449 straydn
= add_replica_stray(m
->straybl
, mds_rank_t(m
->get_source().num()));
10451 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10453 dout(7) << "handle_dentry_unlink don't have dirfrag " << m
->get_dirfrag() << dendl
;
10455 CDentry
*dn
= dir
->lookup(m
->get_dn());
10457 dout(7) << "handle_dentry_unlink don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10459 dout(7) << "handle_dentry_unlink on " << *dn
<< dendl
;
10460 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10463 if (dnl
->is_primary()) {
10464 CInode
*in
= dnl
->get_inode();
10465 dn
->dir
->unlink_inode(dn
);
10467 straydn
->dir
->link_primary_inode(straydn
, in
);
10469 // in->first is lazily updated on replica; drag it forward so
10470 // that we always keep it in sync with the dnq
10471 assert(straydn
->first
>= in
->first
);
10472 in
->first
= straydn
->first
;
10474 // update subtree map?
10476 adjust_subtree_after_rename(in
, dir
, false);
10478 // send caps to auth (if we're not already)
10479 if (in
->is_any_caps() &&
10480 !in
->state_test(CInode::STATE_EXPORTINGCAPS
))
10481 migrator
->export_caps(in
);
10483 touch_dentry_bottom(straydn
); // move stray to end of lru
10487 assert(dnl
->is_remote());
10488 dn
->dir
->unlink_inode(dn
);
10490 assert(dnl
->is_null());
10492 // move to bottom of lru
10493 touch_dentry_bottom(dn
);
10497 // race with trim_dentry()
10499 assert(straydn
->get_num_ref() == 0);
10500 assert(straydn
->get_linkage()->is_null());
10501 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
10502 trim_dentry(straydn
, expiremap
);
10503 send_expire_messages(expiremap
);
10515 // ===================================================================
10519 // ===================================================================
10524 * adjust_dir_fragments -- adjust fragmentation for a directory
10526 * @param diri directory inode
10527 * @param basefrag base fragment
10528 * @param bits bit adjustment. positive for split, negative for merge.
10530 void MDCache::adjust_dir_fragments(CInode
*diri
, frag_t basefrag
, int bits
,
10531 list
<CDir
*>& resultfrags
,
10532 list
<MDSInternalContextBase
*>& waiters
,
10535 dout(10) << "adjust_dir_fragments " << basefrag
<< " " << bits
10536 << " on " << *diri
<< dendl
;
10538 list
<CDir
*> srcfrags
;
10539 diri
->get_dirfrags_under(basefrag
, srcfrags
);
10541 adjust_dir_fragments(diri
, srcfrags
, basefrag
, bits
, resultfrags
, waiters
, replay
);
10544 CDir
*MDCache::force_dir_fragment(CInode
*diri
, frag_t fg
, bool replay
)
10546 CDir
*dir
= diri
->get_dirfrag(fg
);
10550 dout(10) << "force_dir_fragment " << fg
<< " on " << *diri
<< dendl
;
10552 list
<CDir
*> src
, result
;
10553 list
<MDSInternalContextBase
*> waiters
;
10556 frag_t parent
= diri
->dirfragtree
.get_branch_or_leaf(fg
);
10558 CDir
*pdir
= diri
->get_dirfrag(parent
);
10560 int split
= fg
.bits() - parent
.bits();
10561 dout(10) << " splitting parent by " << split
<< " " << *pdir
<< dendl
;
10562 src
.push_back(pdir
);
10563 adjust_dir_fragments(diri
, src
, parent
, split
, result
, waiters
, replay
);
10564 dir
= diri
->get_dirfrag(fg
);
10566 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10570 if (parent
== frag_t())
10572 frag_t last
= parent
;
10573 parent
= parent
.parent();
10574 dout(10) << " " << last
<< " parent is " << parent
<< dendl
;
10578 // hoover up things under fg?
10579 diri
->get_dirfrags_under(fg
, src
);
10581 dout(10) << "force_dir_fragment no frags under " << fg
<< dendl
;
10583 dout(10) << " will combine frags under " << fg
<< ": " << src
<< dendl
;
10584 adjust_dir_fragments(diri
, src
, fg
, 0, result
, waiters
, replay
);
10585 dir
= result
.front();
10586 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10590 mds
->queue_waiters(waiters
);
10594 void MDCache::adjust_dir_fragments(CInode
*diri
,
10595 list
<CDir
*>& srcfrags
,
10596 frag_t basefrag
, int bits
,
10597 list
<CDir
*>& resultfrags
,
10598 list
<MDSInternalContextBase
*>& waiters
,
10601 dout(10) << "adjust_dir_fragments " << basefrag
<< " bits " << bits
10602 << " srcfrags " << srcfrags
10603 << " on " << *diri
<< dendl
;
10606 // yuck. we may have discovered the inode while it was being fragmented.
10607 if (!diri
->dirfragtree
.is_leaf(basefrag
))
10608 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, basefrag
);
10611 diri
->dirfragtree
.split(basefrag
, bits
);
10612 dout(10) << " new fragtree is " << diri
->dirfragtree
<< dendl
;
10614 if (srcfrags
.empty())
10618 CDir
*parent_dir
= diri
->get_parent_dir();
10619 CDir
*parent_subtree
= 0;
10621 parent_subtree
= get_subtree_root(parent_dir
);
10625 assert(srcfrags
.size() == 1);
10626 CDir
*dir
= srcfrags
.front();
10628 dir
->split(bits
, resultfrags
, waiters
, replay
);
10630 // did i change the subtree map?
10631 if (dir
->is_subtree_root()) {
10632 // new frags are now separate subtrees
10633 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10634 p
!= resultfrags
.end();
10636 subtrees
[*p
].clear(); // new frag is now its own subtree
10639 if (parent_subtree
) {
10640 assert(subtrees
[parent_subtree
].count(dir
));
10641 subtrees
[parent_subtree
].erase(dir
);
10642 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10643 p
!= resultfrags
.end();
10645 assert((*p
)->is_subtree_root());
10646 subtrees
[parent_subtree
].insert(*p
);
10650 // adjust my bounds.
10652 bounds
.swap(subtrees
[dir
]);
10653 subtrees
.erase(dir
);
10654 for (set
<CDir
*>::iterator p
= bounds
.begin();
10657 CDir
*frag
= get_subtree_root((*p
)->get_parent_dir());
10658 subtrees
[frag
].insert(*p
);
10663 // dir has no PIN_SUBTREE; CDir::purge_stolen() drops it.
10664 dir
->dir_auth
= CDIR_AUTH_DEFAULT
;
10667 diri
->close_dirfrag(dir
->get_frag());
10672 // are my constituent bits subtrees? if so, i will be too.
10673 // (it's all or none, actually.)
10674 bool was_subtree
= false;
10675 set
<CDir
*> new_bounds
;
10676 for (list
<CDir
*>::iterator p
= srcfrags
.begin(); p
!= srcfrags
.end(); ++p
) {
10678 if (dir
->is_subtree_root()) {
10679 dout(10) << " taking srcfrag subtree bounds from " << *dir
<< dendl
;
10680 was_subtree
= true;
10681 map
<CDir
*, set
<CDir
*> >::iterator q
= subtrees
.find(dir
);
10682 set
<CDir
*>::iterator r
= q
->second
.begin();
10683 while (r
!= subtrees
[dir
].end()) {
10684 new_bounds
.insert(*r
);
10685 subtrees
[dir
].erase(r
++);
10689 // remove myself as my parent's bound
10690 if (parent_subtree
)
10691 subtrees
[parent_subtree
].erase(dir
);
10696 CDir
*f
= new CDir(diri
, basefrag
, this, srcfrags
.front()->is_auth());
10697 f
->merge(srcfrags
, waiters
, replay
);
10698 diri
->add_dirfrag(f
);
10701 assert(f
->is_subtree_root());
10702 subtrees
[f
].swap(new_bounds
);
10703 if (parent_subtree
)
10704 subtrees
[parent_subtree
].insert(f
);
10709 resultfrags
.push_back(f
);
10714 class C_MDC_FragmentFrozen
: public MDSInternalContext
{
10718 C_MDC_FragmentFrozen(MDCache
*m
, MDRequestRef
& r
) :
10719 MDSInternalContext(m
->mds
), mdcache(m
), mdr(r
) {}
10720 void finish(int r
) override
{
10721 mdcache
->fragment_frozen(mdr
, r
);
10725 bool MDCache::can_fragment(CInode
*diri
, list
<CDir
*>& dirs
)
10727 if (is_readonly()) {
10728 dout(7) << "can_fragment: read-only FS, no fragmenting for now" << dendl
;
10731 if (mds
->is_cluster_degraded()) {
10732 dout(7) << "can_fragment: cluster degraded, no fragmenting for now" << dendl
;
10735 if (diri
->get_parent_dir() &&
10736 diri
->get_parent_dir()->get_inode()->is_stray()) {
10737 dout(7) << "can_fragment: i won't merge|split anything in stray" << dendl
;
10740 if (diri
->is_mdsdir() || diri
->is_stray() || diri
->ino() == MDS_INO_CEPH
) {
10741 dout(7) << "can_fragment: i won't fragment the mdsdir or straydir or .ceph" << dendl
;
10745 if (diri
->scrub_is_in_progress()) {
10746 dout(7) << "can_fragment: scrub in progress" << dendl
;
10750 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10752 if (dir
->state_test(CDir::STATE_FRAGMENTING
)) {
10753 dout(7) << "can_fragment: already fragmenting " << *dir
<< dendl
;
10756 if (!dir
->is_auth()) {
10757 dout(7) << "can_fragment: not auth on " << *dir
<< dendl
;
10760 if (dir
->is_bad()) {
10761 dout(7) << "can_fragment: bad dirfrag " << *dir
<< dendl
;
10764 if (dir
->is_frozen() ||
10765 dir
->is_freezing()) {
10766 dout(7) << "can_fragment: can't merge, freezing|frozen. wait for other exports to finish first." << dendl
;
10774 void MDCache::split_dir(CDir
*dir
, int bits
)
10776 dout(7) << __func__
<< " " << *dir
<< " bits " << bits
<< dendl
;
10777 assert(dir
->is_auth());
10778 CInode
*diri
= dir
->inode
;
10781 dirs
.push_back(dir
);
10783 if (!can_fragment(diri
, dirs
)) {
10784 dout(7) << __func__
<< " cannot fragment right now, dropping" << dendl
;
10788 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10789 mdr
->more()->fragment_base
= dir
->dirfrag();
10791 assert(fragments
.count(dir
->dirfrag()) == 0);
10792 fragment_info_t
& info
= fragments
[dir
->dirfrag()];
10794 info
.dirs
.push_back(dir
);
10796 info
.last_cum_auth_pins_change
= ceph_clock_now();
10798 fragment_freeze_dirs(dirs
);
10799 // initial mark+complete pass
10800 fragment_mark_and_complete(mdr
);
10803 void MDCache::merge_dir(CInode
*diri
, frag_t frag
)
10805 dout(7) << "merge_dir to " << frag
<< " on " << *diri
<< dendl
;
10808 if (!diri
->get_dirfrags_under(frag
, dirs
)) {
10809 dout(7) << "don't have all frags under " << frag
<< " for " << *diri
<< dendl
;
10813 if (diri
->dirfragtree
.is_leaf(frag
)) {
10814 dout(10) << " " << frag
<< " already a leaf for " << *diri
<< dendl
;
10818 if (!can_fragment(diri
, dirs
))
10821 CDir
*first
= dirs
.front();
10822 int bits
= first
->get_frag().bits() - frag
.bits();
10823 dout(10) << " we are merginb by " << bits
<< " bits" << dendl
;
10825 dirfrag_t
basedirfrag(diri
->ino(), frag
);
10826 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10827 mdr
->more()->fragment_base
= basedirfrag
;
10829 assert(fragments
.count(basedirfrag
) == 0);
10830 fragment_info_t
& info
= fragments
[basedirfrag
];
10834 info
.last_cum_auth_pins_change
= ceph_clock_now();
10836 fragment_freeze_dirs(dirs
);
10837 // initial mark+complete pass
10838 fragment_mark_and_complete(mdr
);
10841 void MDCache::fragment_freeze_dirs(list
<CDir
*>& dirs
)
10843 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10845 dir
->auth_pin(dir
); // until we mark and complete them
10846 dir
->state_set(CDir::STATE_FRAGMENTING
);
10848 assert(dir
->is_freezing_dir());
10852 class C_MDC_FragmentMarking
: public MDCacheContext
{
10855 C_MDC_FragmentMarking(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
10856 void finish(int r
) override
{
10857 mdcache
->fragment_mark_and_complete(mdr
);
10861 void MDCache::fragment_mark_and_complete(MDRequestRef
& mdr
)
10863 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
10864 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
10865 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
10866 dout(7) << "fragment_mark_and_complete " << basedirfrag
<< " must have aborted" << dendl
;
10867 request_finish(mdr
);
10871 fragment_info_t
& info
= it
->second
;
10872 CInode
*diri
= info
.dirs
.front()->get_inode();
10873 dout(10) << "fragment_mark_and_complete " << info
.dirs
<< " on " << *diri
<< dendl
;
10875 MDSGatherBuilder
gather(g_ceph_context
);
10877 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
10878 p
!= info
.dirs
.end();
10883 if (!dir
->is_complete()) {
10884 dout(15) << " fetching incomplete " << *dir
<< dendl
;
10885 dir
->fetch(gather
.new_sub(), true); // ignore authpinnability
10887 } else if (dir
->get_frag() == frag_t()) {
10888 // The COMPLETE flag gets lost if we fragment a new dirfrag, then rollback
10889 // the operation. To avoid CDir::fetch() complaining about missing object,
10890 // we commit new dirfrag first.
10891 if (dir
->state_test(CDir::STATE_CREATING
)) {
10892 dout(15) << " waiting until new dir gets journaled " << *dir
<< dendl
;
10893 dir
->add_waiter(CDir::WAIT_CREATED
, gather
.new_sub());
10895 } else if (dir
->is_new()) {
10896 dout(15) << " committing new " << *dir
<< dendl
;
10897 assert(dir
->is_dirty());
10898 dir
->commit(0, gather
.new_sub(), true);
10905 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
10906 dout(15) << " marking " << *dir
<< dendl
;
10907 for (CDir::map_t::iterator p
= dir
->items
.begin();
10908 p
!= dir
->items
.end();
10910 CDentry
*dn
= p
->second
;
10911 dn
->get(CDentry::PIN_FRAGMENTING
);
10912 assert(!dn
->state_test(CDentry::STATE_FRAGMENTING
));
10913 dn
->state_set(CDentry::STATE_FRAGMENTING
);
10915 dir
->state_set(CDir::STATE_DNPINNEDFRAG
);
10916 dir
->auth_unpin(dir
);
10918 dout(15) << " already marked " << *dir
<< dendl
;
10921 if (gather
.has_subs()) {
10922 gather
.set_finisher(new C_MDC_FragmentMarking(this, mdr
));
10927 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
10928 p
!= info
.dirs
.end();
10931 if (!dir
->is_frozen_dir()) {
10932 assert(dir
->is_freezing_dir());
10933 dir
->add_waiter(CDir::WAIT_FROZEN
, gather
.new_sub());
10936 if (gather
.has_subs()) {
10937 gather
.set_finisher(new C_MDC_FragmentFrozen(this, mdr
));
10939 // flush log so that request auth_pins are retired
10940 mds
->mdlog
->flush();
10944 fragment_frozen(mdr
, 0);
10947 void MDCache::fragment_unmark_unfreeze_dirs(list
<CDir
*>& dirs
)
10949 dout(10) << "fragment_unmark_unfreeze_dirs " << dirs
<< dendl
;
10950 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10952 dout(10) << " frag " << *dir
<< dendl
;
10954 assert(dir
->state_test(CDir::STATE_FRAGMENTING
));
10955 dir
->state_clear(CDir::STATE_FRAGMENTING
);
10957 if (dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
10958 dir
->state_clear(CDir::STATE_DNPINNEDFRAG
);
10960 for (CDir::map_t::iterator p
= dir
->items
.begin();
10961 p
!= dir
->items
.end();
10963 CDentry
*dn
= p
->second
;
10964 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
10965 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
10966 dn
->put(CDentry::PIN_FRAGMENTING
);
10969 dir
->auth_unpin(dir
);
10972 dir
->unfreeze_dir();
10976 bool MDCache::fragment_are_all_frozen(CDir
*dir
)
10978 assert(dir
->is_frozen_dir());
10979 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
10980 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
10981 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
10983 if (p
->first
.frag
.contains(dir
->get_frag()))
10984 return p
->second
.all_frozen
;
10990 void MDCache::fragment_freeze_inc_num_waiters(CDir
*dir
)
10992 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
10993 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
10994 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
10996 if (p
->first
.frag
.contains(dir
->get_frag())) {
10997 p
->second
.num_remote_waiters
++;
11004 void MDCache::find_stale_fragment_freeze()
11006 dout(10) << "find_stale_fragment_freeze" << dendl
;
11007 // see comment in Migrator::find_stale_export_freeze()
11008 utime_t now
= ceph_clock_now();
11009 utime_t cutoff
= now
;
11010 cutoff
-= g_conf
->mds_freeze_tree_timeout
;
11012 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
11013 p
!= fragments
.end(); ) {
11014 dirfrag_t df
= p
->first
;
11015 fragment_info_t
& info
= p
->second
;
11017 if (info
.all_frozen
)
11020 int total_auth_pins
= 0;
11021 for (list
<CDir
*>::iterator q
= info
.dirs
.begin();
11022 q
!= info
.dirs
.end();
11025 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
11026 total_auth_pins
= -1;
11029 if (dir
->is_frozen_dir())
11031 total_auth_pins
+= dir
->get_auth_pins() + dir
->get_dir_auth_pins();
11033 if (total_auth_pins
< 0)
11035 if (info
.last_cum_auth_pins
!= total_auth_pins
) {
11036 info
.last_cum_auth_pins
= total_auth_pins
;
11037 info
.last_cum_auth_pins_change
= now
;
11040 if (info
.last_cum_auth_pins_change
>= cutoff
)
11042 dir
= info
.dirs
.front();
11043 if (info
.num_remote_waiters
> 0 ||
11044 (!dir
->inode
->is_root() && dir
->get_parent_dir()->is_freezing())) {
11045 dout(10) << " cancel fragmenting " << df
<< " bit " << info
.bits
<< dendl
;
11047 info
.dirs
.swap(dirs
);
11048 fragments
.erase(df
);
11049 fragment_unmark_unfreeze_dirs(dirs
);
11054 class C_MDC_FragmentPrep
: public MDCacheLogContext
{
11057 C_MDC_FragmentPrep(MDCache
*m
, MDRequestRef
& r
) : MDCacheLogContext(m
), mdr(r
) {}
11058 void finish(int r
) override
{
11059 mdcache
->_fragment_logged(mdr
);
11063 class C_MDC_FragmentStore
: public MDCacheContext
{
11066 C_MDC_FragmentStore(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
11067 void finish(int r
) override
{
11068 mdcache
->_fragment_stored(mdr
);
11072 class C_MDC_FragmentCommit
: public MDCacheLogContext
{
11073 dirfrag_t basedirfrag
;
11074 list
<CDir
*> resultfrags
;
11076 C_MDC_FragmentCommit(MDCache
*m
, dirfrag_t df
, list
<CDir
*>& l
) :
11077 MDCacheLogContext(m
), basedirfrag(df
), resultfrags(l
) {}
11078 void finish(int r
) override
{
11079 mdcache
->_fragment_committed(basedirfrag
, resultfrags
);
11083 class C_IO_MDC_FragmentFinish
: public MDCacheIOContext
{
11084 dirfrag_t basedirfrag
;
11085 list
<CDir
*> resultfrags
;
11087 C_IO_MDC_FragmentFinish(MDCache
*m
, dirfrag_t f
, list
<CDir
*>& l
) :
11088 MDCacheIOContext(m
), basedirfrag(f
) {
11089 resultfrags
.swap(l
);
11091 void finish(int r
) override
{
11092 assert(r
== 0 || r
== -ENOENT
);
11093 mdcache
->_fragment_finish(basedirfrag
, resultfrags
);
11097 void MDCache::fragment_frozen(MDRequestRef
& mdr
, int r
)
11099 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11100 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11101 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11102 dout(7) << "fragment_frozen " << basedirfrag
<< " must have aborted" << dendl
;
11103 request_finish(mdr
);
11108 fragment_info_t
& info
= it
->second
;
11109 dout(10) << "fragment_frozen " << basedirfrag
.frag
<< " by " << info
.bits
11110 << " on " << info
.dirs
.front()->get_inode() << dendl
;
11112 info
.all_frozen
= true;
11113 dispatch_fragment_dir(mdr
);
11116 void MDCache::dispatch_fragment_dir(MDRequestRef
& mdr
)
11118 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11119 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11120 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11121 dout(7) << "dispatch_fragment_dir " << basedirfrag
<< " must have aborted" << dendl
;
11122 request_finish(mdr
);
11126 fragment_info_t
& info
= it
->second
;
11127 CInode
*diri
= info
.dirs
.front()->get_inode();
11129 dout(10) << "dispatch_fragment_dir " << basedirfrag
<< " bits " << info
.bits
11130 << " on " << *diri
<< dendl
;
11131 if (!mdr
->aborted
) {
11132 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
11133 wrlocks
.insert(&diri
->dirfragtreelock
);
11134 // prevent a racing gather on any other scatterlocks too
11135 wrlocks
.insert(&diri
->nestlock
);
11136 wrlocks
.insert(&diri
->filelock
);
11137 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
, NULL
, NULL
, true))
11142 if (mdr
->aborted
) {
11143 dout(10) << " can't auth_pin " << *diri
<< ", requeuing dir "
11144 << info
.dirs
.front()->dirfrag() << dendl
;
11146 mds
->balancer
->queue_split(info
.dirs
.front(), false);
11148 mds
->balancer
->queue_merge(info
.dirs
.front());
11149 fragment_unmark_unfreeze_dirs(info
.dirs
);
11150 fragments
.erase(it
);
11151 request_finish(mdr
);
11155 mdr
->ls
= mds
->mdlog
->get_current_segment();
11156 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_PREPARE
, basedirfrag
, info
.bits
);
11157 mds
->mdlog
->start_entry(le
);
11159 for (list
<CDir
*>::iterator p
= info
.dirs
.begin(); p
!= info
.dirs
.end(); ++p
) {
11161 dirfrag_rollback rollback
;
11162 rollback
.fnode
= dir
->fnode
;
11163 le
->add_orig_frag(dir
->get_frag(), &rollback
);
11167 list
<MDSInternalContextBase
*> waiters
;
11168 adjust_dir_fragments(diri
, info
.dirs
, basedirfrag
.frag
, info
.bits
,
11169 info
.resultfrags
, waiters
, false);
11170 if (g_conf
->mds_debug_frag
)
11171 diri
->verify_dirfrags();
11172 mds
->queue_waiters(waiters
);
11174 for (list
<frag_t
>::iterator p
= le
->orig_frags
.begin(); p
!= le
->orig_frags
.end(); ++p
)
11175 assert(!diri
->dirfragtree
.is_leaf(*p
));
11177 le
->metablob
.add_dir_context(*info
.resultfrags
.begin());
11178 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11179 p
!= info
.resultfrags
.end();
11181 if (diri
->is_auth()) {
11182 le
->metablob
.add_fragmented_dir(*p
, false, false);
11184 (*p
)->state_set(CDir::STATE_DIRTYDFT
);
11185 le
->metablob
.add_fragmented_dir(*p
, false, true);
11190 if (diri
->is_auth()) {
11191 // journal dirfragtree
11192 inode_t
*pi
= diri
->project_inode();
11193 pi
->version
= diri
->pre_dirty();
11194 journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
11196 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11197 mdr
->ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11198 mdr
->add_updated_lock(&diri
->dirfragtreelock
);
11203 mds->locker->mark_updated_scatterlock(&diri->filelock);
11204 mut->ls->dirty_dirfrag_dir.push_back(&diri->item_dirty_dirfrag_dir);
11205 mut->add_updated_lock(&diri->filelock);
11208 mds->locker->mark_updated_scatterlock(&diri->nestlock);
11209 mut->ls->dirty_dirfrag_nest.push_back(&diri->item_dirty_dirfrag_nest);
11210 mut->add_updated_lock(&diri->nestlock);
11213 add_uncommitted_fragment(basedirfrag
, info
.bits
, le
->orig_frags
, mdr
->ls
);
11214 mds
->server
->submit_mdlog_entry(le
, new C_MDC_FragmentPrep(this, mdr
),
11216 mds
->mdlog
->flush();
11219 void MDCache::_fragment_logged(MDRequestRef
& mdr
)
11221 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11222 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11223 assert(it
!= fragments
.end());
11224 fragment_info_t
&info
= it
->second
;
11225 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11227 dout(10) << "fragment_logged " << basedirfrag
<< " bits " << info
.bits
11228 << " on " << *diri
<< dendl
;
11230 if (diri
->is_auth())
11231 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
11233 mdr
->apply(); // mark scatterlock
11235 // store resulting frags
11236 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_FragmentStore(this, mdr
));
11238 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11239 p
!= info
.resultfrags
.end();
11242 dout(10) << " storing result frag " << *dir
<< dendl
;
11244 // freeze and store them too
11245 dir
->auth_pin(this);
11246 dir
->state_set(CDir::STATE_FRAGMENTING
);
11247 dir
->commit(0, gather
.new_sub(), true); // ignore authpinnability
11253 void MDCache::_fragment_stored(MDRequestRef
& mdr
)
11255 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11256 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11257 assert(it
!= fragments
.end());
11258 fragment_info_t
&info
= it
->second
;
11259 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11261 dout(10) << "fragment_stored " << basedirfrag
<< " bits " << info
.bits
11262 << " on " << *diri
<< dendl
;
11265 CDir
*first
= *info
.resultfrags
.begin();
11266 for (compact_map
<mds_rank_t
,unsigned>::iterator p
= first
->replicas_begin();
11267 p
!= first
->replicas_end();
11269 if (mds
->mdsmap
->get_state(p
->first
) < MDSMap::STATE_REJOIN
||
11270 (mds
->mdsmap
->get_state(p
->first
) == MDSMap::STATE_REJOIN
&&
11271 rejoin_gather
.count(p
->first
)))
11274 MMDSFragmentNotify
*notify
= new MMDSFragmentNotify(basedirfrag
, info
.bits
);
11276 // freshly replicate new dirs to peers
11277 for (list
<CDir
*>::iterator q
= info
.resultfrags
.begin();
11278 q
!= info
.resultfrags
.end();
11280 replicate_dir(*q
, p
->first
, notify
->basebl
);
11282 mds
->send_message_mds(notify
, p
->first
);
11286 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_COMMIT
, basedirfrag
, info
.bits
);
11287 mds
->mdlog
->start_submit_entry(le
, new C_MDC_FragmentCommit(this, basedirfrag
,
11288 info
.resultfrags
));
11290 mds
->locker
->drop_locks(mdr
.get());
11292 // unfreeze resulting frags
11293 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11294 p
!= info
.resultfrags
.end();
11297 dout(10) << " result frag " << *dir
<< dendl
;
11299 for (CDir::map_t::iterator p
= dir
->items
.begin();
11300 p
!= dir
->items
.end();
11302 CDentry
*dn
= p
->second
;
11303 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
11304 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
11305 dn
->put(CDentry::PIN_FRAGMENTING
);
11309 dir
->unfreeze_dir();
11312 fragments
.erase(it
);
11313 request_finish(mdr
);
11316 void MDCache::_fragment_committed(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11318 dout(10) << "fragment_committed " << basedirfrag
<< dendl
;
11319 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11320 assert(it
!= uncommitted_fragments
.end());
11321 ufragment
&uf
= it
->second
;
11323 // remove old frags
11324 C_GatherBuilder
gather(
11327 new C_IO_MDC_FragmentFinish(this, basedirfrag
, resultfrags
),
11330 SnapContext nullsnapc
;
11331 object_locator_t
oloc(mds
->mdsmap
->get_metadata_pool());
11332 for (list
<frag_t
>::iterator p
= uf
.old_frags
.begin();
11333 p
!= uf
.old_frags
.end();
11335 object_t oid
= CInode::get_object_name(basedirfrag
.ino
, *p
, "");
11336 ObjectOperation op
;
11337 if (*p
== frag_t()) {
11338 // backtrace object
11339 dout(10) << " truncate orphan dirfrag " << oid
<< dendl
;
11343 dout(10) << " removing orphan dirfrag " << oid
<< dendl
;
11346 mds
->objecter
->mutate(oid
, oloc
, op
, nullsnapc
,
11347 ceph::real_clock::now(),
11348 0, gather
.new_sub());
11351 assert(gather
.has_subs());
11355 void MDCache::_fragment_finish(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11357 dout(10) << "fragment_finish " << basedirfrag
<< "resultfrags.size="
11358 << resultfrags
.size() << dendl
;
11359 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11360 assert(it
!= uncommitted_fragments
.end());
11361 ufragment
&uf
= it
->second
;
11363 // unmark & auth_unpin
11364 for (const auto &dir
: resultfrags
) {
11365 dir
->state_clear(CDir::STATE_FRAGMENTING
);
11366 dir
->auth_unpin(this);
11368 // In case the resulting fragments are beyond the split size,
11369 // we might need to split them again right away (they could
11370 // have been taking inserts between unfreezing and getting
11372 mds
->balancer
->maybe_fragment(dir
, false);
11376 if (resultfrags
.size() > 1) {
11377 mds
->logger
->inc(l_mds_dir_split
);
11379 mds
->logger
->inc(l_mds_dir_merge
);
11383 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_FINISH
, basedirfrag
, uf
.bits
);
11384 mds
->mdlog
->start_submit_entry(le
);
11386 finish_uncommitted_fragment(basedirfrag
, EFragment::OP_FINISH
);
11389 /* This function DOES put the passed message before returning */
11390 void MDCache::handle_fragment_notify(MMDSFragmentNotify
*notify
)
11392 dout(10) << "handle_fragment_notify " << *notify
<< " from " << notify
->get_source() << dendl
;
11394 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
11399 CInode
*diri
= get_inode(notify
->get_ino());
11401 frag_t base
= notify
->get_basefrag();
11402 int bits
= notify
->get_bits();
11405 if ((bits < 0 && diri->dirfragtree.is_leaf(base)) ||
11406 (bits > 0 && !diri->dirfragtree.is_leaf(base))) {
11407 dout(10) << " dft " << diri->dirfragtree << " state doesn't match " << base << " by " << bits
11408 << ", must have found out during resolve/rejoin? ignoring. " << *diri << dendl;
11415 list
<MDSInternalContextBase
*> waiters
;
11416 list
<CDir
*> resultfrags
;
11417 adjust_dir_fragments(diri
, base
, bits
, resultfrags
, waiters
, false);
11418 if (g_conf
->mds_debug_frag
)
11419 diri
->verify_dirfrags();
11421 for (list
<CDir
*>::iterator p
= resultfrags
.begin(); p
!= resultfrags
.end(); ++p
)
11422 diri
->take_dir_waiting((*p
)->get_frag(), waiters
);
11424 // add new replica dirs values
11425 bufferlist::iterator p
= notify
->basebl
.begin();
11427 add_replica_dir(p
, diri
, mds_rank_t(notify
->get_source().num()), waiters
);
11429 mds
->queue_waiters(waiters
);
11437 void MDCache::add_uncommitted_fragment(dirfrag_t basedirfrag
, int bits
, list
<frag_t
>& old_frags
,
11438 LogSegment
*ls
, bufferlist
*rollback
)
11440 dout(10) << "add_uncommitted_fragment: base dirfrag " << basedirfrag
<< " bits " << bits
<< dendl
;
11441 assert(!uncommitted_fragments
.count(basedirfrag
));
11442 ufragment
& uf
= uncommitted_fragments
[basedirfrag
];
11443 uf
.old_frags
= old_frags
;
11446 ls
->uncommitted_fragments
.insert(basedirfrag
);
11448 uf
.rollback
.swap(*rollback
);
11451 void MDCache::finish_uncommitted_fragment(dirfrag_t basedirfrag
, int op
)
11453 dout(10) << "finish_uncommitted_fragments: base dirfrag " << basedirfrag
11454 << " op " << EFragment::op_name(op
) << dendl
;
11455 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11456 if (it
!= uncommitted_fragments
.end()) {
11457 ufragment
& uf
= it
->second
;
11458 if (op
!= EFragment::OP_FINISH
&& !uf
.old_frags
.empty()) {
11459 uf
.committed
= true;
11461 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11462 mds
->queue_waiters(uf
.waiters
);
11463 uncommitted_fragments
.erase(it
);
11468 void MDCache::rollback_uncommitted_fragment(dirfrag_t basedirfrag
, list
<frag_t
>& old_frags
)
11470 dout(10) << "rollback_uncommitted_fragment: base dirfrag " << basedirfrag
11471 << " old_frags (" << old_frags
<< ")" << dendl
;
11472 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11473 if (it
!= uncommitted_fragments
.end()) {
11474 ufragment
& uf
= it
->second
;
11475 if (!uf
.old_frags
.empty()) {
11476 uf
.old_frags
.swap(old_frags
);
11477 uf
.committed
= true;
11479 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11480 uncommitted_fragments
.erase(it
);
11485 void MDCache::rollback_uncommitted_fragments()
11487 dout(10) << "rollback_uncommitted_fragments: " << uncommitted_fragments
.size() << " pending" << dendl
;
11488 for (map
<dirfrag_t
, ufragment
>::iterator p
= uncommitted_fragments
.begin();
11489 p
!= uncommitted_fragments
.end();
11491 ufragment
&uf
= p
->second
;
11492 CInode
*diri
= get_inode(p
->first
.ino
);
11495 if (uf
.committed
) {
11497 diri
->get_dirfrags_under(p
->first
.frag
, frags
);
11498 for (list
<CDir
*>::iterator q
= frags
.begin(); q
!= frags
.end(); ++q
) {
11500 dir
->auth_pin(this);
11501 dir
->state_set(CDir::STATE_FRAGMENTING
);
11503 _fragment_committed(p
->first
, frags
);
11507 dout(10) << " rolling back " << p
->first
<< " refragment by " << uf
.bits
<< " bits" << dendl
;
11509 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
11510 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_ROLLBACK
, p
->first
, uf
.bits
);
11511 mds
->mdlog
->start_entry(le
);
11512 bool diri_auth
= (diri
->authority() != CDIR_AUTH_UNDEF
);
11514 list
<frag_t
> old_frags
;
11515 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, old_frags
);
11517 list
<CDir
*> resultfrags
;
11518 if (uf
.old_frags
.empty()) {
11519 // created by old format EFragment
11520 list
<MDSInternalContextBase
*> waiters
;
11521 adjust_dir_fragments(diri
, p
->first
.frag
, -uf
.bits
, resultfrags
, waiters
, true);
11523 bufferlist::iterator bp
= uf
.rollback
.begin();
11524 for (list
<frag_t
>::iterator q
= uf
.old_frags
.begin(); q
!= uf
.old_frags
.end(); ++q
) {
11525 CDir
*dir
= force_dir_fragment(diri
, *q
);
11526 resultfrags
.push_back(dir
);
11528 dirfrag_rollback rollback
;
11529 ::decode(rollback
, bp
);
11531 dir
->set_version(rollback
.fnode
.version
);
11532 dir
->fnode
= rollback
.fnode
;
11534 dir
->_mark_dirty(ls
);
11536 if (!(dir
->fnode
.rstat
== dir
->fnode
.accounted_rstat
)) {
11537 dout(10) << " dirty nestinfo on " << *dir
<< dendl
;
11538 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->nestlock
);
11539 ls
->dirty_dirfrag_nest
.push_back(&dir
->inode
->item_dirty_dirfrag_nest
);
11541 if (!(dir
->fnode
.fragstat
== dir
->fnode
.accounted_fragstat
)) {
11542 dout(10) << " dirty fragstat on " << *dir
<< dendl
;
11543 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->filelock
);
11544 ls
->dirty_dirfrag_dir
.push_back(&dir
->inode
->item_dirty_dirfrag_dir
);
11547 le
->add_orig_frag(dir
->get_frag());
11548 le
->metablob
.add_dir_context(dir
);
11550 le
->metablob
.add_fragmented_dir(dir
, true, false);
11552 dout(10) << " dirty dirfragtree on " << *dir
<< dendl
;
11553 dir
->state_set(CDir::STATE_DIRTYDFT
);
11554 le
->metablob
.add_fragmented_dir(dir
, true, true);
11560 diri
->project_inode()->version
= diri
->pre_dirty();
11561 diri
->pop_and_dirty_projected_inode(ls
); // hacky
11562 le
->metablob
.add_primary_dentry(diri
->get_projected_parent_dn(), diri
, true);
11564 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11565 ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11568 if (g_conf
->mds_debug_frag
)
11569 diri
->verify_dirfrags();
11571 for (list
<frag_t
>::iterator q
= old_frags
.begin(); q
!= old_frags
.end(); ++q
)
11572 assert(!diri
->dirfragtree
.is_leaf(*q
));
11574 for (list
<CDir
*>::iterator q
= resultfrags
.begin(); q
!= resultfrags
.end(); ++q
) {
11576 dir
->auth_pin(this);
11577 dir
->state_set(CDir::STATE_FRAGMENTING
);
11580 mds
->mdlog
->submit_entry(le
);
11582 uf
.old_frags
.swap(old_frags
);
11583 _fragment_committed(p
->first
, resultfrags
);
11587 void MDCache::force_readonly()
11592 dout(1) << "force file system read-only" << dendl
;
11593 mds
->clog
->warn() << "force file system read-only";
11597 mds
->server
->force_clients_readonly();
11599 // revoke write caps
11600 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator p
= inode_map
.begin();
11601 p
!= inode_map
.end();
11603 CInode
*in
= p
->second
;
11605 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
);
11608 mds
->mdlog
->flush();
11612 // ==============================================================
11615 void MDCache::show_subtrees(int dbl
)
11617 if (g_conf
->mds_thrash_exports
)
11620 //dout(10) << "show_subtrees" << dendl;
11622 if (!g_conf
->subsys
.should_gather(ceph_subsys_mds
, dbl
))
11623 return; // i won't print anything.
11625 if (subtrees
.empty()) {
11626 dout(dbl
) << "show_subtrees - no subtrees" << dendl
;
11631 list
<CDir
*> basefrags
;
11632 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
11633 p
!= base_inodes
.end();
11635 (*p
)->get_dirfrags(basefrags
);
11636 //dout(15) << "show_subtrees, base dirfrags " << basefrags << dendl;
11637 dout(15) << "show_subtrees" << dendl
;
11640 list
<pair
<CDir
*,int> > q
;
11645 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11646 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11648 set
<CDir
*> subtrees_seen
;
11651 while (!q
.empty()) {
11652 CDir
*dir
= q
.front().first
;
11653 int d
= q
.front().second
;
11656 if (subtrees
.count(dir
) == 0) continue;
11658 subtrees_seen
.insert(dir
);
11660 if (d
> depth
) depth
= d
;
11663 //dout(25) << "saw depth " << d << " " << *dir << dendl;
11664 if (seen
.count(dir
)) dout(0) << "aah, already seen " << *dir
<< dendl
;
11665 assert(seen
.count(dir
) == 0);
11669 if (!subtrees
[dir
].empty()) {
11670 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11671 p
!= subtrees
[dir
].end();
11673 //dout(25) << " saw sub " << **p << dendl;
11674 q
.push_front(pair
<CDir
*,int>(*p
, d
+1));
11681 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11682 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11684 while (!q
.empty()) {
11685 CDir
*dir
= q
.front().first
;
11686 int d
= q
.front().second
;
11689 if (subtrees
.count(dir
) == 0) continue;
11692 while ((unsigned)d
< indent
.size())
11696 string pad
= "______________________________________";
11697 pad
.resize(depth
*2+1-indent
.size());
11698 if (!subtrees
[dir
].empty())
11699 pad
[0] = '.'; // parent
11703 if (dir
->is_auth())
11709 if (dir
->get_dir_auth().second
== CDIR_AUTH_UNKNOWN
)
11710 snprintf(s
, sizeof(s
), "%2d ", int(dir
->get_dir_auth().first
));
11712 snprintf(s
, sizeof(s
), "%2d,%2d", int(dir
->get_dir_auth().first
), int(dir
->get_dir_auth().second
));
11715 dout(dbl
) << indent
<< "|_" << pad
<< s
<< " " << auth
<< *dir
<< dendl
;
11717 if (dir
->ino() == MDS_INO_ROOT
)
11718 assert(dir
->inode
== root
);
11719 if (dir
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
11720 assert(dir
->inode
== myin
);
11721 if (dir
->inode
->is_stray() && (MDS_INO_STRAY_OWNER(dir
->ino()) == mds
->get_nodeid()))
11722 assert(strays
[MDS_INO_STRAY_INDEX(dir
->ino())] == dir
->inode
);
11725 if (!subtrees
[dir
].empty()) {
11726 // more at my level?
11727 if (!q
.empty() && q
.front().second
== d
)
11732 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11733 p
!= subtrees
[dir
].end();
11735 q
.push_front(pair
<CDir
*,int>(*p
, d
+2));
11739 // verify there isn't stray crap in subtree map
11741 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
11742 p
!= subtrees
.end();
11744 if (subtrees_seen
.count(p
->first
)) continue;
11745 dout(10) << "*** stray/lost entry in subtree map: " << *p
->first
<< dendl
;
11752 void MDCache::show_cache()
11754 dout(7) << "show_cache" << dendl
;
11756 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator it
= inode_map
.begin();
11757 it
!= inode_map
.end();
11760 if (!it
->second
->parent
)
11761 dout(7) << " unlinked " << *it
->second
<< dendl
;
11765 it
->second
->get_dirfrags(dfs
);
11766 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11768 dout(7) << " dirfrag " << *dir
<< dendl
;
11770 for (CDir::map_t::iterator p
= dir
->items
.begin();
11771 p
!= dir
->items
.end();
11773 CDentry
*dn
= p
->second
;
11774 dout(7) << " dentry " << *dn
<< dendl
;
11775 CDentry::linkage_t
*dnl
= dn
->get_linkage();
11776 if (dnl
->is_primary() && dnl
->get_inode())
11777 dout(7) << " inode " << *dnl
->get_inode() << dendl
;
11783 void MDCache::dump_cache(std::string
const &file_name
)
11785 dump_cache(file_name
.c_str(), NULL
);
11788 void MDCache::dump_cache(Formatter
*f
)
11790 dump_cache(NULL
, f
);
11793 void MDCache::dump_cache(const string
& dump_root
, int depth
, Formatter
*f
)
11795 dump_cache(NULL
, f
, dump_root
, depth
);
11799 * Dump the metadata cache, either to a Formatter, if
11800 * provided, else to a plain text file.
11802 void MDCache::dump_cache(const char *fn
, Formatter
*f
,
11803 const string
& dump_root
, int depth
)
11809 f
->open_array_section("inodes");
11813 snprintf(deffn
, sizeof(deffn
), "cachedump.%d.mds%d", (int)mds
->mdsmap
->get_epoch(), int(mds
->get_nodeid()));
11817 dout(1) << "dump_cache to " << fn
<< dendl
;
11819 fd
= ::open(fn
, O_WRONLY
|O_CREAT
|O_EXCL
, 0600);
11821 derr
<< "failed to open " << fn
<< ": " << cpp_strerror(errno
) << dendl
;
11826 for (ceph::unordered_map
<vinodeno_t
,CInode
*>::iterator it
= inode_map
.begin();
11827 it
!= inode_map
.end();
11829 CInode
*in
= it
->second
;
11831 if (!dump_root
.empty()) {
11836 in
->make_path_string(ipath
);
11838 if (dump_root
.length() > ipath
.length() ||
11839 !equal(dump_root
.begin(), dump_root
.end(), ipath
.begin()))
11843 count(ipath
.begin() + dump_root
.length(), ipath
.end(), '/') > depth
)
11848 f
->open_object_section("inode");
11852 ss
<< *in
<< std::endl
;
11853 std::string s
= ss
.str();
11854 r
= safe_write(fd
, s
.c_str(), s
.length());
11861 in
->get_dirfrags(dfs
);
11863 f
->open_array_section("dirfrags");
11865 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11868 f
->open_object_section("dir");
11872 tt
<< " " << *dir
<< std::endl
;
11873 string t
= tt
.str();
11874 r
= safe_write(fd
, t
.c_str(), t
.length());
11881 f
->open_array_section("dentries");
11883 for (CDir::map_t::iterator q
= dir
->items
.begin();
11884 q
!= dir
->items
.end();
11886 CDentry
*dn
= q
->second
;
11888 f
->open_object_section("dentry");
11890 f
->close_section();
11893 uu
<< " " << *dn
<< std::endl
;
11894 string u
= uu
.str();
11895 r
= safe_write(fd
, u
.c_str(), u
.length());
11902 f
->close_section(); //dentries
11904 dir
->check_rstats();
11906 f
->close_section(); //dir
11910 f
->close_section(); // dirfrags
11914 f
->close_section(); // inode
11920 f
->close_section(); // inodes
11928 C_MDS_RetryRequest::C_MDS_RetryRequest(MDCache
*c
, MDRequestRef
& r
)
11929 : MDSInternalContext(c
->mds
), cache(c
), mdr(r
)
11932 void C_MDS_RetryRequest::finish(int r
)
11935 cache
->dispatch_request(mdr
);
11939 class C_MDS_EnqueueScrub
: public Context
11941 Formatter
*formatter
;
11942 Context
*on_finish
;
11944 ScrubHeaderRef header
;
11945 C_MDS_EnqueueScrub(Formatter
*f
, Context
*fin
) :
11946 formatter(f
), on_finish(fin
), header(nullptr) {}
11948 Context
*take_finisher() {
11949 Context
*fin
= on_finish
;
11954 void finish(int r
) override
{
11955 if (r
< 0) { // we failed the lookup or something; dump ourselves
11956 formatter
->open_object_section("results");
11957 formatter
->dump_int("return_code", r
);
11958 formatter
->close_section(); // results
11961 on_finish
->complete(r
);
11965 void MDCache::enqueue_scrub(
11966 const string
& path
,
11967 const std::string
&tag
,
11968 bool force
, bool recursive
, bool repair
,
11969 Formatter
*f
, Context
*fin
)
11971 dout(10) << __func__
<< path
<< dendl
;
11972 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_ENQUEUE_SCRUB
);
11973 filepath
fp(path
.c_str());
11974 mdr
->set_filepath(fp
);
11976 C_MDS_EnqueueScrub
*cs
= new C_MDS_EnqueueScrub(f
, fin
);
11977 cs
->header
= std::make_shared
<ScrubHeader
>(
11978 tag
, force
, recursive
, repair
, f
);
11980 mdr
->internal_op_finish
= cs
;
11981 enqueue_scrub_work(mdr
);
11984 void MDCache::enqueue_scrub_work(MDRequestRef
& mdr
)
11986 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
11987 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
11991 // TODO: Remove this restriction
11992 assert(in
->is_auth());
11994 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
11998 C_MDS_EnqueueScrub
*cs
= static_cast<C_MDS_EnqueueScrub
*>(mdr
->internal_op_finish
);
11999 ScrubHeaderRef
&header
= cs
->header
;
12001 // Cannot scrub same dentry twice at same time
12002 if (in
->scrub_infop
&& in
->scrub_infop
->scrub_in_progress
) {
12003 mds
->server
->respond_to_request(mdr
, -EBUSY
);
12009 header
->set_origin(in
);
12011 // only set completion context for non-recursive scrub, because we don't
12012 // want to block asok caller on long running scrub
12013 if (!header
->get_recursive()) {
12014 Context
*fin
= cs
->take_finisher();
12015 mds
->scrubstack
->enqueue_inode_top(in
, header
,
12016 new MDSInternalContextWrapper(mds
, fin
));
12018 mds
->scrubstack
->enqueue_inode_bottom(in
, header
, NULL
);
12020 mds
->server
->respond_to_request(mdr
, 0);
12024 struct C_MDC_RepairDirfragStats
: public MDCacheLogContext
{
12026 C_MDC_RepairDirfragStats(MDCache
*c
, MDRequestRef
& m
) :
12027 MDCacheLogContext(c
), mdr(m
) {}
12028 void finish(int r
) override
{
12030 get_mds()->server
->respond_to_request(mdr
, r
);
12034 void MDCache::repair_dirfrag_stats(CDir
*dir
)
12036 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_FRAGSTATS
);
12038 mdr
->internal_op_private
= dir
;
12039 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12040 repair_dirfrag_stats_work(mdr
);
12043 void MDCache::repair_dirfrag_stats_work(MDRequestRef
& mdr
)
12045 CDir
*dir
= static_cast<CDir
*>(mdr
->internal_op_private
);
12046 dout(10) << __func__
<< " " << *dir
<< dendl
;
12048 if (!dir
->is_auth()) {
12049 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12053 if (!mdr
->is_auth_pinned(dir
) && !dir
->can_auth_pin()) {
12054 mds
->locker
->drop_locks(mdr
.get());
12055 mdr
->drop_local_auth_pins();
12056 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(this, mdr
));
12060 mdr
->auth_pin(dir
);
12062 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12063 CInode
*diri
= dir
->inode
;
12064 rdlocks
.insert(&diri
->dirfragtreelock
);
12065 wrlocks
.insert(&diri
->nestlock
);
12066 wrlocks
.insert(&diri
->filelock
);
12067 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12070 if (!dir
->is_complete()) {
12071 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12075 frag_info_t frag_info
;
12076 nest_info_t nest_info
;
12077 for (CDir::map_t::iterator it
= dir
->begin(); it
!= dir
->end(); ++it
) {
12078 CDentry
*dn
= it
->second
;
12079 if (dn
->last
!= CEPH_NOSNAP
)
12081 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
12082 if (dnl
->is_primary()) {
12083 CInode
*in
= dnl
->get_inode();
12084 nest_info
.add(in
->get_projected_inode()->accounted_rstat
);
12086 frag_info
.nsubdirs
++;
12088 frag_info
.nfiles
++;
12089 } else if (dnl
->is_remote())
12090 frag_info
.nfiles
++;
12093 fnode_t
*pf
= dir
->get_projected_fnode();
12094 bool good_fragstat
= frag_info
.same_sums(pf
->fragstat
);
12095 bool good_rstat
= nest_info
.same_sums(pf
->rstat
);
12096 if (good_fragstat
&& good_rstat
) {
12097 dout(10) << __func__
<< " no corruption found" << dendl
;
12098 mds
->server
->respond_to_request(mdr
, 0);
12102 pf
= dir
->project_fnode();
12103 pf
->version
= dir
->pre_dirty();
12104 mdr
->add_projected_fnode(dir
);
12106 mdr
->ls
= mds
->mdlog
->get_current_segment();
12107 EUpdate
*le
= new EUpdate(mds
->mdlog
, "repair_dirfrag");
12108 mds
->mdlog
->start_entry(le
);
12110 if (!good_fragstat
) {
12111 if (pf
->fragstat
.mtime
> frag_info
.mtime
)
12112 frag_info
.mtime
= pf
->fragstat
.mtime
;
12113 if (pf
->fragstat
.change_attr
> frag_info
.change_attr
)
12114 frag_info
.change_attr
= pf
->fragstat
.change_attr
;
12115 pf
->fragstat
= frag_info
;
12116 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12117 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12118 mdr
->add_updated_lock(&diri
->filelock
);
12122 if (pf
->rstat
.rctime
> nest_info
.rctime
)
12123 nest_info
.rctime
= pf
->rstat
.rctime
;
12124 pf
->rstat
= nest_info
;
12125 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12126 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12127 mdr
->add_updated_lock(&diri
->nestlock
);
12130 le
->metablob
.add_dir_context(dir
);
12131 le
->metablob
.add_dir(dir
, true);
12133 mds
->mdlog
->submit_entry(le
, new C_MDC_RepairDirfragStats(this, mdr
));
12136 void MDCache::repair_inode_stats(CInode
*diri
)
12138 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_INODESTATS
);
12140 mdr
->internal_op_private
= diri
;
12141 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12142 repair_inode_stats_work(mdr
);
12145 void MDCache::repair_inode_stats_work(MDRequestRef
& mdr
)
12147 CInode
*diri
= static_cast<CInode
*>(mdr
->internal_op_private
);
12148 dout(10) << __func__
<< " " << *diri
<< dendl
;
12150 if (!diri
->is_auth()) {
12151 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12154 if (!diri
->is_dir()) {
12155 mds
->server
->respond_to_request(mdr
, -ENOTDIR
);
12159 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12160 std::list
<frag_t
> frags
;
12162 if (mdr
->ls
) // already marked filelock/nestlock dirty ?
12165 rdlocks
.insert(&diri
->dirfragtreelock
);
12166 wrlocks
.insert(&diri
->nestlock
);
12167 wrlocks
.insert(&diri
->filelock
);
12168 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12171 // Fetch all dirfrags and mark filelock/nestlock dirty. This will tirgger
12172 // the scatter-gather process, which will fix any fragstat/rstat errors.
12173 diri
->dirfragtree
.get_leaves(frags
);
12174 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12175 CDir
*dir
= diri
->get_dirfrag(*p
);
12177 assert(mdr
->is_auth_pinned(diri
));
12178 dir
= diri
->get_or_open_dirfrag(this, *p
);
12180 if (dir
->get_version() == 0) {
12181 assert(dir
->is_auth());
12182 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12187 diri
->state_set(CInode::STATE_REPAIRSTATS
);
12188 mdr
->ls
= mds
->mdlog
->get_current_segment();
12189 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12190 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12191 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12192 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12194 mds
->locker
->drop_locks(mdr
.get());
12197 // force the scatter-gather process
12198 rdlocks
.insert(&diri
->dirfragtreelock
);
12199 rdlocks
.insert(&diri
->nestlock
);
12200 rdlocks
.insert(&diri
->filelock
);
12202 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12205 diri
->state_clear(CInode::STATE_REPAIRSTATS
);
12207 frag_info_t dir_info
;
12208 nest_info_t nest_info
;
12209 nest_info
.rsubdirs
++; // it gets one to account for self
12211 diri
->dirfragtree
.get_leaves(frags
);
12212 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12213 CDir
*dir
= diri
->get_dirfrag(*p
);
12215 assert(dir
->get_version() > 0);
12216 dir_info
.add(dir
->fnode
.accounted_fragstat
);
12217 nest_info
.add(dir
->fnode
.accounted_rstat
);
12220 if (!dir_info
.same_sums(diri
->inode
.dirstat
) ||
12221 !nest_info
.same_sums(diri
->inode
.rstat
)) {
12222 dout(10) << __func__
<< " failed to fix fragstat/rstat on "
12226 mds
->server
->respond_to_request(mdr
, 0);
12229 void MDCache::flush_dentry(const string
& path
, Context
*fin
)
12231 if (is_readonly()) {
12232 dout(10) << __func__
<< ": read-only FS" << dendl
;
12233 fin
->complete(-EROFS
);
12236 dout(10) << "flush_dentry " << path
<< dendl
;
12237 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FLUSH
);
12238 filepath
fp(path
.c_str());
12239 mdr
->set_filepath(fp
);
12240 mdr
->internal_op_finish
= fin
;
12241 flush_dentry_work(mdr
);
12244 class C_FinishIOMDR
: public MDSInternalContextBase
{
12248 MDSRank
*get_mds() override
{ return mds
; }
12250 C_FinishIOMDR(MDSRank
*mds_
, MDRequestRef
& mdr_
) : mds(mds_
), mdr(mdr_
) {}
12251 void finish(int r
) override
{ mds
->server
->respond_to_request(mdr
, r
); }
12254 void MDCache::flush_dentry_work(MDRequestRef
& mdr
)
12256 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12257 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
12261 // TODO: Is this necessary? Fix it if so
12262 assert(in
->is_auth());
12263 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
12266 in
->flush(new C_FinishIOMDR(mds
, mdr
));
12271 * Initialize performance counters with global perfcounter
12274 void MDCache::register_perfcounters()
12276 PerfCountersBuilder
pcb(g_ceph_context
,
12277 "mds_cache", l_mdc_first
, l_mdc_last
);
12279 /* Stray/purge statistics */
12280 pcb
.add_u64(l_mdc_num_strays
, "num_strays",
12281 "Stray dentries", "stry");
12282 pcb
.add_u64(l_mdc_num_strays_delayed
, "num_strays_delayed", "Stray dentries delayed");
12283 pcb
.add_u64(l_mdc_num_strays_enqueuing
, "num_strays_enqueuing", "Stray dentries enqueuing for purge");
12285 pcb
.add_u64_counter(l_mdc_strays_created
, "strays_created", "Stray dentries created");
12286 pcb
.add_u64_counter(l_mdc_strays_enqueued
, "strays_enqueued",
12287 "Stray dentries enqueued for purge");
12288 pcb
.add_u64_counter(l_mdc_strays_reintegrated
, "strays_reintegrated", "Stray dentries reintegrated");
12289 pcb
.add_u64_counter(l_mdc_strays_migrated
, "strays_migrated", "Stray dentries migrated");
12292 /* Recovery queue statistics */
12293 pcb
.add_u64(l_mdc_num_recovering_processing
, "num_recovering_processing", "Files currently being recovered");
12294 pcb
.add_u64(l_mdc_num_recovering_enqueued
, "num_recovering_enqueued",
12295 "Files waiting for recovery", "recy");
12296 pcb
.add_u64(l_mdc_num_recovering_prioritized
, "num_recovering_prioritized", "Files waiting for recovery with elevated priority");
12297 pcb
.add_u64_counter(l_mdc_recovery_started
, "recovery_started", "File recoveries started");
12298 pcb
.add_u64_counter(l_mdc_recovery_completed
, "recovery_completed",
12299 "File recoveries completed", "recd");
12301 logger
.reset(pcb
.create_perf_counters());
12302 g_ceph_context
->get_perfcounters_collection()->add(logger
.get());
12303 recovery_queue
.set_logger(logger
.get());
12304 stray_manager
.set_logger(logger
.get());
12307 void MDCache::activate_stray_manager()
12310 stray_manager
.activate();
12313 new MDSInternalContextWrapper(mds
,
12314 new FunctionContext([this](int r
){
12315 stray_manager
.activate();
12323 * Call this when putting references to an inode/dentry or
12324 * when attempting to trim it.
12326 * If this inode is no longer linked by anyone, and this MDS
12327 * rank holds the primary dentry, and that dentry is in a stray
12328 * directory, then give up the dentry to the StrayManager, never
12329 * to be seen again by MDCache.
12331 * @param delay if true, then purgeable inodes are stashed til
12332 * the next trim(), rather than being purged right
12335 void MDCache::maybe_eval_stray(CInode
*in
, bool delay
) {
12336 if (in
->inode
.nlink
> 0 || in
->is_base() || is_readonly() || mds
->is_standby_replay())
12338 CDentry
*dn
= in
->get_projected_parent_dn();
12340 if (dn
->state_test(CDentry::STATE_PURGING
)) {
12341 /* We have already entered the purging process, no need
12342 * to re-evaluate me ! */
12346 if (dn
->get_projected_linkage()->is_primary() &&
12347 dn
->get_dir()->get_inode()->is_stray()) {
12348 stray_manager
.eval_stray(dn
, delay
);