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.
20 #include <boost/utility/string_view.hpp>
28 #include "MDBalancer.h"
30 #include "ScrubStack.h"
32 #include "SnapClient.h"
41 #include "include/ceph_fs.h"
42 #include "include/filepath.h"
43 #include "include/util.h"
45 #include "msg/Message.h"
46 #include "msg/Messenger.h"
48 #include "common/MemoryModel.h"
49 #include "common/errno.h"
50 #include "common/perf_counters.h"
51 #include "common/safe_io.h"
53 #include "osdc/Journaler.h"
54 #include "osdc/Filer.h"
56 #include "events/ESubtreeMap.h"
57 #include "events/EUpdate.h"
58 #include "events/ESlaveUpdate.h"
59 #include "events/EImportFinish.h"
60 #include "events/EFragment.h"
61 #include "events/ECommitted.h"
62 #include "events/ESessions.h"
64 #include "messages/MGenericMessage.h"
66 #include "messages/MMDSResolve.h"
67 #include "messages/MMDSResolveAck.h"
68 #include "messages/MMDSCacheRejoin.h"
70 #include "messages/MDiscover.h"
71 #include "messages/MDiscoverReply.h"
73 //#include "messages/MInodeUpdate.h"
74 #include "messages/MDirUpdate.h"
75 #include "messages/MCacheExpire.h"
77 #include "messages/MInodeFileCaps.h"
79 #include "messages/MLock.h"
80 #include "messages/MDentryLink.h"
81 #include "messages/MDentryUnlink.h"
83 #include "messages/MMDSFindIno.h"
84 #include "messages/MMDSFindInoReply.h"
86 #include "messages/MMDSOpenIno.h"
87 #include "messages/MMDSOpenInoReply.h"
89 #include "messages/MClientRequest.h"
90 #include "messages/MClientCaps.h"
91 #include "messages/MClientSnap.h"
92 #include "messages/MClientQuota.h"
94 #include "messages/MMDSSlaveRequest.h"
96 #include "messages/MMDSFragmentNotify.h"
98 #include "messages/MGatherCaps.h"
100 #include "InoTable.h"
102 #include "common/Timer.h"
104 #include "perfglue/heap_profiler.h"
108 #include "common/config.h"
109 #include "include/assert.h"
111 #define dout_context g_ceph_context
112 #define dout_subsys ceph_subsys_mds
114 #define dout_prefix _prefix(_dout, mds)
115 static ostream
& _prefix(std::ostream
*_dout
, MDSRank
*mds
) {
116 return *_dout
<< "mds." << mds
->get_nodeid() << ".cache ";
119 set
<int> SimpleLock::empty_gather_set
;
123 * All non-I/O contexts that require a reference
124 * to an MDCache instance descend from this.
126 class MDCacheContext
: public virtual MDSInternalContextBase
{
129 MDSRank
*get_mds() override
131 assert(mdcache
!= NULL
);
135 explicit MDCacheContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
140 * Only for contexts called back from an I/O completion
142 * Note: duplication of members wrt MDCacheContext, because
143 * it'ls the lesser of two evils compared with introducing
144 * yet another piece of (multiple) inheritance.
146 class MDCacheIOContext
: public virtual MDSIOContextBase
{
149 MDSRank
*get_mds() override
151 assert(mdcache
!= NULL
);
155 explicit MDCacheIOContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
158 class MDCacheLogContext
: public virtual MDSLogContextBase
{
161 MDSRank
*get_mds() override
163 assert(mdcache
!= NULL
);
167 explicit MDCacheLogContext(MDCache
*mdc_
) : mdcache(mdc_
) {}
170 MDCache::MDCache(MDSRank
*m
, PurgeQueue
&purge_queue_
) :
172 filer(m
->objecter
, m
->finisher
),
173 exceeded_size_limit(false),
175 stray_manager(m
, purge_queue_
)
177 migrator
.reset(new Migrator(mds
, this));
183 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
187 num_shadow_inodes
= 0;
188 num_inodes_with_caps
= 0;
190 max_dir_commit_size
= g_conf
->mds_dir_max_commit_size
?
191 (g_conf
->mds_dir_max_commit_size
<< 20) :
192 (0.9 *(g_conf
->osd_max_write_size
<< 20));
194 discover_last_tid
= 0;
195 open_ino_last_tid
= 0;
196 find_ino_peer_last_tid
= 0;
200 client_lease_durations
[0] = 5.0;
201 client_lease_durations
[1] = 30.0;
202 client_lease_durations
[2] = 300.0;
204 resolves_pending
= false;
205 rejoins_pending
= false;
206 cap_imports_num_opening
= 0;
208 opening_root
= open
= false;
209 lru
.lru_set_midpoint(cache_mid());
211 bottom_lru
.lru_set_midpoint(0);
213 decayrate
.set_halflife(g_conf
->mds_decay_halflife
);
215 did_shutdown_log_cap
= false;
221 g_ceph_context
->get_perfcounters_collection()->remove(logger
.get());
227 void MDCache::log_stat()
229 mds
->logger
->set(l_mds_inode_max
, cache_limit_inodes() == 0 ? INT_MAX
: cache_limit_inodes());
230 mds
->logger
->set(l_mds_inodes
, lru
.lru_get_size());
231 mds
->logger
->set(l_mds_inodes_pinned
, lru
.lru_get_num_pinned());
232 mds
->logger
->set(l_mds_inodes_top
, lru
.lru_get_top());
233 mds
->logger
->set(l_mds_inodes_bottom
, lru
.lru_get_bot());
234 mds
->logger
->set(l_mds_inodes_pin_tail
, lru
.lru_get_pintail());
235 mds
->logger
->set(l_mds_inodes_with_caps
, num_inodes_with_caps
);
236 mds
->logger
->set(l_mds_caps
, Capability::count());
242 bool MDCache::shutdown()
244 if (lru
.lru_get_size() > 0) {
245 dout(7) << "WARNING: mdcache shutdown with non-empty cache" << dendl
;
254 // ====================================================================
255 // some inode functions
257 void MDCache::add_inode(CInode
*in
)
259 // add to lru, inode map
260 if (in
->last
== CEPH_NOSNAP
) {
261 auto &p
= inode_map
[in
->ino()];
262 assert(!p
); // should be no dup inos!
265 auto &p
= snap_inode_map
[in
->vino()];
266 assert(!p
); // should be no dup inos!
270 if (in
->ino() < MDS_INO_SYSTEM_BASE
) {
271 if (in
->ino() == MDS_INO_ROOT
)
273 else if (in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
275 else if (in
->is_stray()) {
276 if (MDS_INO_STRAY_OWNER(in
->ino()) == mds
->get_nodeid()) {
277 strays
[MDS_INO_STRAY_INDEX(in
->ino())] = in
;
281 base_inodes
.insert(in
);
284 if (cache_toofull()) {
285 exceeded_size_limit
= true;
289 void MDCache::remove_inode(CInode
*o
)
291 dout(14) << "remove_inode " << *o
<< dendl
;
293 if (o
->get_parent_dn()) {
294 // FIXME: multiple parents?
295 CDentry
*dn
= o
->get_parent_dn();
296 assert(!dn
->is_dirty());
297 dn
->dir
->unlink_inode(dn
); // leave dentry ... FIXME?
302 if (o
->is_dirty_parent())
303 o
->clear_dirty_parent();
305 o
->clear_scatter_dirty();
307 o
->item_open_file
.remove_myself();
309 if (o
->state_test(CInode::STATE_QUEUEDEXPORTPIN
))
310 export_pin_queue
.erase(o
);
312 // remove from inode map
313 if (o
->last
== CEPH_NOSNAP
)
314 inode_map
.erase(o
->ino());
316 snap_inode_map
.erase(o
->vino());
318 if (o
->ino() < MDS_INO_SYSTEM_BASE
) {
319 if (o
== root
) root
= 0;
320 if (o
== myin
) myin
= 0;
322 if (MDS_INO_STRAY_OWNER(o
->ino()) == mds
->get_nodeid()) {
323 strays
[MDS_INO_STRAY_INDEX(o
->ino())] = 0;
327 base_inodes
.erase(o
);
331 assert(o
->get_num_ref() == 0);
335 file_layout_t
MDCache::gen_default_file_layout(const MDSMap
&mdsmap
)
337 file_layout_t result
= file_layout_t::get_default();
338 result
.pool_id
= mdsmap
.get_first_data_pool();
342 file_layout_t
MDCache::gen_default_log_layout(const MDSMap
&mdsmap
)
344 file_layout_t result
= file_layout_t::get_default();
345 result
.pool_id
= mdsmap
.get_metadata_pool();
346 if (g_conf
->mds_log_segment_size
> 0) {
347 result
.object_size
= g_conf
->mds_log_segment_size
;
348 result
.stripe_unit
= g_conf
->mds_log_segment_size
;
353 void MDCache::init_layouts()
355 default_file_layout
= gen_default_file_layout(*(mds
->mdsmap
));
356 default_log_layout
= gen_default_log_layout(*(mds
->mdsmap
));
359 void MDCache::create_unlinked_system_inode(CInode
*in
, inodeno_t ino
,
363 in
->inode
.version
= 1;
364 in
->inode
.xattr_version
= 1;
365 in
->inode
.mode
= 0500 | mode
;
369 in
->inode
.btime
= ceph_clock_now();
371 in
->inode
.truncate_size
= -1ull;
372 in
->inode
.change_attr
= 0;
373 in
->inode
.export_pin
= MDS_RANK_NONE
;
375 memset(&in
->inode
.dir_layout
, 0, sizeof(in
->inode
.dir_layout
));
376 if (in
->inode
.is_dir()) {
377 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
378 ++in
->inode
.rstat
.rsubdirs
;
380 in
->inode
.layout
= default_file_layout
;
381 ++in
->inode
.rstat
.rfiles
;
383 in
->inode
.accounted_rstat
= in
->inode
.rstat
;
387 in
->inode_auth
= mds_authority_t(mds
->get_nodeid(), CDIR_AUTH_UNKNOWN
);
389 in
->inode_auth
= mds_authority_t(mds_rank_t(in
->ino() - MDS_INO_MDSDIR_OFFSET
), CDIR_AUTH_UNKNOWN
);
390 in
->open_snaprealm(); // empty snaprealm
391 assert(!in
->snaprealm
->parent
); // created its own
392 in
->snaprealm
->srnode
.seq
= 1;
396 CInode
*MDCache::create_system_inode(inodeno_t ino
, int mode
)
398 dout(0) << "creating system inode with ino:" << ino
<< dendl
;
399 CInode
*in
= new CInode(this);
400 create_unlinked_system_inode(in
, ino
, mode
);
405 CInode
*MDCache::create_root_inode()
407 CInode
*i
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755);
408 i
->inode
.uid
= g_conf
->mds_root_ino_uid
;
409 i
->inode
.gid
= g_conf
->mds_root_ino_gid
;
410 i
->inode
.layout
= default_file_layout
;
411 i
->inode
.layout
.pool_id
= mds
->mdsmap
->get_first_data_pool();
415 void MDCache::create_empty_hierarchy(MDSGather
*gather
)
418 CInode
*root
= create_root_inode();
420 // force empty root dir
421 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
422 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
423 rootdir
->dir_rep
= CDir::REP_ALL
; //NONE;
425 rootdir
->fnode
.accounted_fragstat
= rootdir
->fnode
.fragstat
;
426 rootdir
->fnode
.accounted_rstat
= rootdir
->fnode
.rstat
;
428 root
->inode
.dirstat
= rootdir
->fnode
.fragstat
;
429 root
->inode
.rstat
= rootdir
->fnode
.rstat
;
430 ++root
->inode
.rstat
.rsubdirs
;
431 root
->inode
.accounted_rstat
= root
->inode
.rstat
;
433 rootdir
->mark_complete();
434 rootdir
->mark_dirty(rootdir
->pre_dirty(), mds
->mdlog
->get_current_segment());
435 rootdir
->commit(0, gather
->new_sub());
437 root
->store(gather
->new_sub());
440 void MDCache::create_mydir_hierarchy(MDSGather
*gather
)
443 CInode
*my
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
);
445 CDir
*mydir
= my
->get_or_open_dirfrag(this, frag_t());
446 adjust_subtree_auth(mydir
, mds
->get_nodeid());
448 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
451 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
452 CInode
*stray
= create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
);
453 CDir
*straydir
= stray
->get_or_open_dirfrag(this, frag_t());
455 name
<< "stray" << i
;
456 CDentry
*sdn
= mydir
->add_primary_dentry(name
.str(), stray
);
457 sdn
->_mark_dirty(mds
->mdlog
->get_current_segment());
459 stray
->inode
.dirstat
= straydir
->fnode
.fragstat
;
461 mydir
->fnode
.rstat
.add(stray
->inode
.rstat
);
462 mydir
->fnode
.fragstat
.nsubdirs
++;
464 straydir
->mark_complete();
465 straydir
->mark_dirty(straydir
->pre_dirty(), ls
);
466 straydir
->commit(0, gather
->new_sub());
467 stray
->_mark_dirty_parent(ls
, true);
468 stray
->store_backtrace(gather
->new_sub());
471 mydir
->fnode
.accounted_fragstat
= mydir
->fnode
.fragstat
;
472 mydir
->fnode
.accounted_rstat
= mydir
->fnode
.rstat
;
474 myin
->inode
.dirstat
= mydir
->fnode
.fragstat
;
475 myin
->inode
.rstat
= mydir
->fnode
.rstat
;
476 ++myin
->inode
.rstat
.rsubdirs
;
477 myin
->inode
.accounted_rstat
= myin
->inode
.rstat
;
479 mydir
->mark_complete();
480 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
481 mydir
->commit(0, gather
->new_sub());
483 myin
->store(gather
->new_sub());
486 struct C_MDC_CreateSystemFile
: public MDCacheLogContext
{
490 MDSInternalContextBase
*fin
;
491 C_MDC_CreateSystemFile(MDCache
*c
, MutationRef
& mu
, CDentry
*d
, version_t v
, MDSInternalContextBase
*f
) :
492 MDCacheLogContext(c
), mut(mu
), dn(d
), dpv(v
), fin(f
) {}
493 void finish(int r
) override
{
494 mdcache
->_create_system_file_finish(mut
, dn
, dpv
, fin
);
498 void MDCache::_create_system_file(CDir
*dir
, const char *name
, CInode
*in
, MDSInternalContextBase
*fin
)
500 dout(10) << "_create_system_file " << name
<< " in " << *dir
<< dendl
;
501 CDentry
*dn
= dir
->add_null_dentry(name
);
503 dn
->push_projected_linkage(in
);
504 version_t dpv
= dn
->pre_dirty();
507 if (in
->inode
.is_dir()) {
508 in
->inode
.rstat
.rsubdirs
= 1;
510 mdir
= in
->get_or_open_dirfrag(this, frag_t());
511 mdir
->mark_complete();
514 in
->inode
.rstat
.rfiles
= 1;
515 in
->inode
.version
= dn
->pre_dirty();
517 SnapRealm
*realm
= dir
->get_inode()->find_snaprealm();
518 dn
->first
= in
->first
= realm
->get_newest_seq() + 1;
520 MutationRef
mut(new MutationImpl());
522 // force some locks. hacky.
523 mds
->locker
->wrlock_force(&dir
->inode
->filelock
, mut
);
524 mds
->locker
->wrlock_force(&dir
->inode
->nestlock
, mut
);
526 mut
->ls
= mds
->mdlog
->get_current_segment();
527 EUpdate
*le
= new EUpdate(mds
->mdlog
, "create system file");
528 mds
->mdlog
->start_entry(le
);
530 if (!in
->is_mdsdir()) {
531 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
532 le
->metablob
.add_primary_dentry(dn
, in
, true);
534 predirty_journal_parents(mut
, &le
->metablob
, in
, dir
, PREDIRTY_DIR
, 1);
535 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
536 dn
->push_projected_linkage(in
->ino(), in
->d_type());
537 le
->metablob
.add_remote_dentry(dn
, true, in
->ino(), in
->d_type());
538 le
->metablob
.add_root(true, in
);
541 le
->metablob
.add_new_dir(mdir
); // dirty AND complete AND new
543 mds
->mdlog
->submit_entry(le
, new C_MDC_CreateSystemFile(this, mut
, dn
, dpv
, fin
));
547 void MDCache::_create_system_file_finish(MutationRef
& mut
, CDentry
*dn
, version_t dpv
, MDSInternalContextBase
*fin
)
549 dout(10) << "_create_system_file_finish " << *dn
<< dendl
;
551 dn
->pop_projected_linkage();
552 dn
->mark_dirty(dpv
, mut
->ls
);
554 CInode
*in
= dn
->get_linkage()->get_inode();
556 in
->mark_dirty(in
->inode
.version
+ 1, mut
->ls
);
558 if (in
->inode
.is_dir()) {
559 CDir
*dir
= in
->get_dirfrag(frag_t());
561 dir
->mark_dirty(1, mut
->ls
);
562 dir
->mark_new(mut
->ls
);
566 mds
->locker
->drop_locks(mut
.get());
571 //if (dir && MDS_INO_IS_MDSDIR(in->ino()))
572 //migrator->export_dir(dir, (int)in->ino() - MDS_INO_MDSDIR_OFFSET);
577 struct C_MDS_RetryOpenRoot
: public MDSInternalContext
{
579 explicit C_MDS_RetryOpenRoot(MDCache
*c
) : MDSInternalContext(c
->mds
), cache(c
) {}
580 void finish(int r
) override
{
582 // If we can't open root, something disastrous has happened: mark
583 // this rank damaged for operator intervention. Note that
584 // it is not okay to call suicide() here because we are in
585 // a Finisher callback.
586 cache
->mds
->damaged();
587 ceph_abort(); // damaged should never return
594 void MDCache::open_root_inode(MDSInternalContextBase
*c
)
596 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
598 in
= create_system_inode(MDS_INO_ROOT
, S_IFDIR
|0755); // initially inaccurate!
601 discover_base_ino(MDS_INO_ROOT
, c
, mds
->mdsmap
->get_root());
605 void MDCache::open_mydir_inode(MDSInternalContextBase
*c
)
607 MDSGatherBuilder
gather(g_ceph_context
);
609 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
610 in
->fetch(gather
.new_sub());
612 gather
.set_finisher(c
);
616 void MDCache::open_root()
618 dout(10) << "open_root" << dendl
;
621 open_root_inode(new C_MDS_RetryOpenRoot(this));
624 if (mds
->get_nodeid() == mds
->mdsmap
->get_root()) {
625 assert(root
->is_auth());
626 CDir
*rootdir
= root
->get_or_open_dirfrag(this, frag_t());
628 if (!rootdir
->is_subtree_root())
629 adjust_subtree_auth(rootdir
, mds
->get_nodeid());
630 if (!rootdir
->is_complete()) {
631 rootdir
->fetch(new C_MDS_RetryOpenRoot(this));
635 assert(!root
->is_auth());
636 CDir
*rootdir
= root
->get_dirfrag(frag_t());
638 open_remote_dirfrag(root
, frag_t(), new C_MDS_RetryOpenRoot(this));
644 CInode
*in
= create_system_inode(MDS_INO_MDSDIR(mds
->get_nodeid()), S_IFDIR
|0755); // initially inaccurate!
645 in
->fetch(new C_MDS_RetryOpenRoot(this));
648 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
650 adjust_subtree_auth(mydir
, mds
->get_nodeid());
655 void MDCache::populate_mydir()
658 CDir
*mydir
= myin
->get_or_open_dirfrag(this, frag_t());
661 dout(10) << "populate_mydir " << *mydir
<< dendl
;
663 if (!mydir
->is_complete()) {
664 mydir
->fetch(new C_MDS_RetryOpenRoot(this));
668 if (mydir
->get_version() == 0 && mydir
->state_test(CDir::STATE_BADFRAG
)) {
669 // A missing dirfrag, we will recreate it. Before that, we must dirty
670 // it before dirtying any of the strays we create within it.
671 mds
->clog
->warn() << "fragment " << mydir
->dirfrag() << " was unreadable, "
673 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
674 mydir
->state_clear(CDir::STATE_BADFRAG
);
675 mydir
->mark_complete();
676 mydir
->mark_dirty(mydir
->pre_dirty(), ls
);
679 // open or create stray
680 uint64_t num_strays
= 0;
681 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
683 name
<< "stray" << i
;
684 CDentry
*straydn
= mydir
->lookup(name
.str());
686 // allow for older fs's with stray instead of stray0
687 if (straydn
== NULL
&& i
== 0)
688 straydn
= mydir
->lookup("stray");
690 if (!straydn
|| !straydn
->get_linkage()->get_inode()) {
691 _create_system_file(mydir
, name
.str().c_str(), create_system_inode(MDS_INO_STRAY(mds
->get_nodeid(), i
), S_IFDIR
),
692 new C_MDS_RetryOpenRoot(this));
697 // we make multiple passes through this method; make sure we only pin each stray once.
698 if (!strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
699 strays
[i
]->get(CInode::PIN_STRAY
);
700 strays
[i
]->state_set(CInode::STATE_STRAYPINNED
);
701 strays
[i
]->get_stickydirs();
703 dout(20) << " stray num " << i
<< " is " << *strays
[i
] << dendl
;
707 strays
[i
]->dirfragtree
.get_leaves(ls
);
708 for (list
<frag_t
>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
710 CDir
*dir
= strays
[i
]->get_dirfrag(fg
);
712 dir
= strays
[i
]->get_or_open_dirfrag(this, fg
);
715 // DamageTable applies special handling to strays: it will
716 // have damaged() us out if one is damaged.
717 assert(!dir
->state_test(CDir::STATE_BADFRAG
));
719 if (dir
->get_version() == 0) {
720 dir
->fetch(new C_MDS_RetryOpenRoot(this));
724 if (dir
->get_frag_size() > 0)
725 num_strays
+= dir
->get_frag_size();
729 stray_manager
.set_num_strays(num_strays
);
732 dout(10) << "populate_mydir done" << dendl
;
735 mds
->queue_waiters(waiting_for_open
);
740 void MDCache::open_foreign_mdsdir(inodeno_t ino
, MDSInternalContextBase
*fin
)
742 discover_base_ino(ino
, fin
, mds_rank_t(ino
& (MAX_MDS
-1)));
745 CDir
*MDCache::get_stray_dir(CInode
*in
)
748 in
->name_stray_dentry(straydname
);
750 CInode
*strayi
= get_stray();
752 frag_t fg
= strayi
->pick_dirfrag(straydname
);
753 CDir
*straydir
= strayi
->get_dirfrag(fg
);
758 CDentry
*MDCache::get_or_create_stray_dentry(CInode
*in
)
760 CDir
*straydir
= get_stray_dir(in
);
762 in
->name_stray_dentry(straydname
);
763 CDentry
*straydn
= straydir
->lookup(straydname
);
765 straydn
= straydir
->add_null_dentry(straydname
);
768 assert(straydn
->get_projected_linkage()->is_null());
771 straydn
->state_set(CDentry::STATE_STRAY
);
777 MDSCacheObject
*MDCache::get_object(MDSCacheObjectInfo
&info
)
781 return get_inode(info
.ino
, info
.snapid
);
784 CDir
*dir
= get_dirfrag(info
.dirfrag
);
787 if (info
.dname
.length())
788 return dir
->lookup(info
.dname
, info
.snapid
);
796 // ====================================================================
797 // subtree management
799 void MDCache::list_subtrees(list
<CDir
*>& ls
)
801 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
804 ls
.push_back(p
->first
);
808 * adjust the dir_auth of a subtree.
809 * merge with parent and/or child subtrees, if is it appropriate.
810 * merge can ONLY happen if both parent and child have unambiguous auth.
812 void MDCache::adjust_subtree_auth(CDir
*dir
, mds_authority_t auth
)
814 dout(7) << "adjust_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
815 << " on " << *dir
<< dendl
;
820 if (dir
->inode
->is_base()) {
821 root
= dir
; // bootstrap hack.
822 if (subtrees
.count(root
) == 0) {
824 root
->get(CDir::PIN_SUBTREE
);
827 root
= get_subtree_root(dir
); // subtree root
830 assert(subtrees
.count(root
));
831 dout(7) << " current root is " << *root
<< dendl
;
834 // i am already a subtree.
835 dir
->set_dir_auth(auth
);
837 // i am a new subtree.
838 dout(10) << " new subtree at " << *dir
<< dendl
;
839 assert(subtrees
.count(dir
) == 0);
840 subtrees
[dir
]; // create empty subtree bounds list for me.
841 dir
->get(CDir::PIN_SUBTREE
);
844 dir
->set_dir_auth(auth
);
846 // move items nested beneath me, under me.
847 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
848 while (p
!= subtrees
[root
].end()) {
849 set
<CDir
*>::iterator next
= p
;
851 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
853 dout(10) << " claiming child bound " << **p
<< dendl
;
854 subtrees
[dir
].insert(*p
);
855 subtrees
[root
].erase(p
);
860 // i am a bound of the parent subtree.
861 subtrees
[root
].insert(dir
);
863 // i am now the subtree root.
866 // adjust recursive pop counters
867 if (dir
->is_auth()) {
868 utime_t now
= ceph_clock_now();
869 CDir
*p
= dir
->get_parent_dir();
871 p
->pop_auth_subtree
.sub(now
, decayrate
, dir
->pop_auth_subtree
);
872 if (p
->is_subtree_root()) break;
873 p
= p
->inode
->get_parent_dir();
882 void MDCache::try_subtree_merge(CDir
*dir
)
884 dout(7) << "try_subtree_merge " << *dir
<< dendl
;
885 // record my old bounds
886 auto oldbounds
= subtrees
.at(dir
);
888 set
<CInode
*> to_eval
;
889 // try merge at my root
890 try_subtree_merge_at(dir
, &to_eval
);
892 // try merge at my old bounds
893 for (auto bound
: oldbounds
)
894 try_subtree_merge_at(bound
, &to_eval
);
896 if (!(mds
->is_any_replay() || mds
->is_resolve())) {
897 for(auto in
: to_eval
)
898 eval_subtree_root(in
);
902 class C_MDC_SubtreeMergeWB
: public MDCacheLogContext
{
906 C_MDC_SubtreeMergeWB(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) : MDCacheLogContext(mdc
), in(i
), mut(m
) {}
907 void finish(int r
) override
{
908 mdcache
->subtree_merge_writebehind_finish(in
, mut
);
912 void MDCache::try_subtree_merge_at(CDir
*dir
, set
<CInode
*> *to_eval
)
914 dout(10) << "try_subtree_merge_at " << *dir
<< dendl
;
916 if (dir
->dir_auth
.second
!= CDIR_AUTH_UNKNOWN
||
917 dir
->state_test(CDir::STATE_EXPORTBOUND
) ||
918 dir
->state_test(CDir::STATE_AUXSUBTREE
))
921 auto it
= subtrees
.find(dir
);
922 assert(it
!= subtrees
.end());
924 // merge with parent?
926 if (!dir
->inode
->is_base())
927 parent
= get_subtree_root(dir
->get_parent_dir());
929 if (parent
!= dir
&& // we have a parent,
930 parent
->dir_auth
== dir
->dir_auth
) { // auth matches,
931 // merge with parent.
932 dout(10) << " subtree merge at " << *dir
<< dendl
;
933 dir
->set_dir_auth(CDIR_AUTH_DEFAULT
);
935 // move our bounds under the parent
936 subtrees
[parent
].insert(it
->second
.begin(), it
->second
.end());
938 // we are no longer a subtree or bound
939 dir
->put(CDir::PIN_SUBTREE
);
941 subtrees
[parent
].erase(dir
);
943 // adjust popularity?
944 if (dir
->is_auth()) {
945 utime_t now
= ceph_clock_now();
946 CDir
*p
= dir
->get_parent_dir();
948 p
->pop_auth_subtree
.add(now
, decayrate
, dir
->pop_auth_subtree
);
949 if (p
->is_subtree_root()) break;
950 p
= p
->inode
->get_parent_dir();
954 if (to_eval
&& dir
->get_inode()->is_auth())
955 to_eval
->insert(dir
->get_inode());
961 void MDCache::subtree_merge_writebehind_finish(CInode
*in
, MutationRef
& mut
)
963 dout(10) << "subtree_merge_writebehind_finish on " << in
<< dendl
;
964 in
->pop_and_dirty_projected_inode(mut
->ls
);
967 mds
->locker
->drop_locks(mut
.get());
970 in
->auth_unpin(this);
973 void MDCache::eval_subtree_root(CInode
*diri
)
975 // evaluate subtree inode filelock?
976 // (we should scatter the filelock on subtree bounds)
977 assert(diri
->is_auth());
978 mds
->locker
->try_eval(diri
, CEPH_LOCK_IFILE
| CEPH_LOCK_INEST
);
982 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, set
<CDir
*>& bounds
, mds_authority_t auth
)
984 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
986 << " bounds " << bounds
992 if (dir
->ino() == MDS_INO_ROOT
) {
993 root
= dir
; // bootstrap hack.
994 if (subtrees
.count(root
) == 0) {
996 root
->get(CDir::PIN_SUBTREE
);
999 root
= get_subtree_root(dir
); // subtree root
1002 assert(subtrees
.count(root
));
1003 dout(7) << " current root is " << *root
<< dendl
;
1005 mds_authority_t oldauth
= dir
->authority();
1008 // i am already a subtree.
1009 dir
->set_dir_auth(auth
);
1011 // i am a new subtree.
1012 dout(10) << " new subtree at " << *dir
<< dendl
;
1013 assert(subtrees
.count(dir
) == 0);
1014 subtrees
[dir
]; // create empty subtree bounds list for me.
1015 dir
->get(CDir::PIN_SUBTREE
);
1018 dir
->set_dir_auth(auth
);
1020 // move items nested beneath me, under me.
1021 set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1022 while (p
!= subtrees
[root
].end()) {
1023 set
<CDir
*>::iterator next
= p
;
1025 if (get_subtree_root((*p
)->get_parent_dir()) == dir
) {
1027 dout(10) << " claiming child bound " << **p
<< dendl
;
1028 subtrees
[dir
].insert(*p
);
1029 subtrees
[root
].erase(p
);
1034 // i am a bound of the parent subtree.
1035 subtrees
[root
].insert(dir
);
1037 // i am now the subtree root.
1041 set
<CInode
*> to_eval
;
1043 // verify/adjust bounds.
1044 // - these may be new, or
1045 // - beneath existing ambiguous bounds (which will be collapsed),
1046 // - but NOT beneath unambiguous bounds.
1047 for (set
<CDir
*>::iterator p
= bounds
.begin();
1053 if (subtrees
[dir
].count(bound
) == 0) {
1054 if (get_subtree_root(bound
) == dir
) {
1055 dout(10) << " new bound " << *bound
<< ", adjusting auth back to old " << oldauth
<< dendl
;
1056 adjust_subtree_auth(bound
, oldauth
); // otherwise, adjust at bound.
1059 dout(10) << " want bound " << *bound
<< dendl
;
1060 CDir
*t
= get_subtree_root(bound
->get_parent_dir());
1061 if (subtrees
[t
].count(bound
) == 0) {
1063 dout(10) << " new bound " << *bound
<< dendl
;
1064 adjust_subtree_auth(bound
, t
->authority());
1066 // make sure it's nested beneath ambiguous subtree(s)
1068 while (subtrees
[dir
].count(t
) == 0)
1069 t
= get_subtree_root(t
->get_parent_dir());
1070 dout(10) << " swallowing intervening subtree at " << *t
<< dendl
;
1071 adjust_subtree_auth(t
, auth
);
1072 try_subtree_merge_at(t
, &to_eval
);
1073 t
= get_subtree_root(bound
->get_parent_dir());
1074 if (t
== dir
) break;
1079 dout(10) << " already have bound " << *bound
<< dendl
;
1082 // merge stray bounds?
1083 while (!subtrees
[dir
].empty()) {
1084 set
<CDir
*> copy
= subtrees
[dir
];
1085 for (set
<CDir
*>::iterator p
= copy
.begin(); p
!= copy
.end(); ++p
) {
1086 if (bounds
.count(*p
) == 0) {
1088 dout(10) << " swallowing extra subtree at " << *stray
<< dendl
;
1089 adjust_subtree_auth(stray
, auth
);
1090 try_subtree_merge_at(stray
, &to_eval
);
1093 // swallowing subtree may add new subtree bounds
1094 if (copy
== subtrees
[dir
])
1098 // bound should now match.
1099 verify_subtree_bounds(dir
, bounds
);
1103 if (!(mds
->is_any_replay() || mds
->is_resolve())) {
1104 for(auto in
: to_eval
)
1105 eval_subtree_root(in
);
1111 * return a set of CDir*'s that correspond to the given bound set. Only adjust
1112 * fragmentation as necessary to get an equivalent bounding set. That is, only
1113 * split if one of our frags spans the provided bounding set. Never merge.
1115 void MDCache::get_force_dirfrag_bound_set(vector
<dirfrag_t
>& dfs
, set
<CDir
*>& bounds
)
1117 dout(10) << "get_force_dirfrag_bound_set " << dfs
<< dendl
;
1120 map
<inodeno_t
, fragset_t
> byino
;
1121 for (vector
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1122 byino
[p
->ino
].insert(p
->frag
);
1123 dout(10) << " by ino: " << byino
<< dendl
;
1125 for (map
<inodeno_t
,fragset_t
>::iterator p
= byino
.begin(); p
!= byino
.end(); ++p
) {
1126 CInode
*diri
= get_inode(p
->first
);
1129 dout(10) << " checking fragset " << p
->second
.get() << " on " << *diri
<< dendl
;
1132 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1133 tmpdft
.force_to_leaf(g_ceph_context
, *q
);
1135 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
1138 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1141 frag_t approx_fg
= diri
->dirfragtree
[fg
.value()];
1143 tmpdft
.get_leaves_under(approx_fg
, ls
);
1144 for (list
<frag_t
>::iterator r
= ls
.begin(); r
!= ls
.end(); ++r
) {
1145 if (p
->second
.get().count(*r
) == 0) {
1146 // not bound, so the resolve message is from auth MDS of the dirfrag
1147 force_dir_fragment(diri
, *r
);
1152 fgls
.push_back(approx_fg
);
1154 diri
->dirfragtree
.get_leaves_under(fg
, fgls
);
1156 dout(10) << " frag " << fg
<< " contains " << fgls
<< dendl
;
1157 for (list
<frag_t
>::iterator r
= fgls
.begin(); r
!= fgls
.end(); ++r
) {
1158 CDir
*dir
= diri
->get_dirfrag(*r
);
1166 void MDCache::adjust_bounded_subtree_auth(CDir
*dir
, vector
<dirfrag_t
>& bound_dfs
, mds_authority_t auth
)
1168 dout(7) << "adjust_bounded_subtree_auth " << dir
->get_dir_auth() << " -> " << auth
1169 << " on " << *dir
<< " bound_dfs " << bound_dfs
<< dendl
;
1172 get_force_dirfrag_bound_set(bound_dfs
, bounds
);
1173 adjust_bounded_subtree_auth(dir
, bounds
, auth
);
1176 void MDCache::map_dirfrag_set(list
<dirfrag_t
>& dfs
, set
<CDir
*>& result
)
1178 dout(10) << "map_dirfrag_set " << dfs
<< dendl
;
1181 map
<inodeno_t
, fragset_t
> ino_fragset
;
1182 for (list
<dirfrag_t
>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
)
1183 ino_fragset
[p
->ino
].insert(p
->frag
);
1186 for (map
<inodeno_t
, fragset_t
>::iterator p
= ino_fragset
.begin();
1187 p
!= ino_fragset
.end();
1189 CInode
*in
= get_inode(p
->first
);
1193 list
<frag_t
> fglist
;
1194 for (set
<frag_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
1195 in
->dirfragtree
.get_leaves_under(*q
, fglist
);
1197 dout(15) << "map_dirfrag_set " << p
->second
<< " -> " << fglist
1198 << " on " << *in
<< dendl
;
1200 for (list
<frag_t
>::iterator q
= fglist
.begin(); q
!= fglist
.end(); ++q
) {
1201 CDir
*dir
= in
->get_dirfrag(*q
);
1210 CDir
*MDCache::get_subtree_root(CDir
*dir
)
1212 // find the underlying dir that delegates (or is about to delegate) auth
1214 if (dir
->is_subtree_root())
1216 dir
= dir
->get_inode()->get_parent_dir();
1222 CDir
*MDCache::get_projected_subtree_root(CDir
*dir
)
1224 // find the underlying dir that delegates (or is about to delegate) auth
1226 if (dir
->is_subtree_root())
1228 dir
= dir
->get_inode()->get_projected_parent_dir();
1234 void MDCache::remove_subtree(CDir
*dir
)
1236 dout(10) << "remove_subtree " << *dir
<< dendl
;
1237 assert(subtrees
.count(dir
));
1238 assert(subtrees
[dir
].empty());
1239 subtrees
.erase(dir
);
1240 dir
->put(CDir::PIN_SUBTREE
);
1241 if (dir
->get_parent_dir()) {
1242 CDir
*p
= get_subtree_root(dir
->get_parent_dir());
1243 assert(subtrees
[p
].count(dir
));
1244 subtrees
[p
].erase(dir
);
1248 void MDCache::get_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1250 assert(subtrees
.count(dir
));
1251 bounds
= subtrees
[dir
];
1254 void MDCache::get_wouldbe_subtree_bounds(CDir
*dir
, set
<CDir
*>& bounds
)
1256 if (subtrees
.count(dir
)) {
1257 // just copy them, dir is a subtree.
1258 get_subtree_bounds(dir
, bounds
);
1261 CDir
*root
= get_subtree_root(dir
);
1262 for (set
<CDir
*>::iterator p
= subtrees
[root
].begin();
1263 p
!= subtrees
[root
].end();
1267 t
= t
->get_parent_dir();
1278 void MDCache::verify_subtree_bounds(CDir
*dir
, const set
<CDir
*>& bounds
)
1280 // for debugging only.
1281 assert(subtrees
.count(dir
));
1282 if (bounds
!= subtrees
[dir
]) {
1283 dout(0) << "verify_subtree_bounds failed" << dendl
;
1284 set
<CDir
*> b
= bounds
;
1285 for (auto &cd
: subtrees
[dir
]) {
1286 if (bounds
.count(cd
)) {
1290 dout(0) << " missing bound " << *cd
<< dendl
;
1292 for (const auto &cd
: b
)
1293 dout(0) << " extra bound " << *cd
<< dendl
;
1295 assert(bounds
== subtrees
[dir
]);
1298 void MDCache::verify_subtree_bounds(CDir
*dir
, const list
<dirfrag_t
>& bounds
)
1300 // for debugging only.
1301 assert(subtrees
.count(dir
));
1303 // make sure that any bounds i do have are properly noted as such.
1305 for (const auto &fg
: bounds
) {
1306 CDir
*bd
= get_dirfrag(fg
);
1308 if (subtrees
[dir
].count(bd
) == 0) {
1309 dout(0) << "verify_subtree_bounds failed: extra bound " << *bd
<< dendl
;
1313 assert(failed
== 0);
1316 void MDCache::project_subtree_rename(CInode
*diri
, CDir
*olddir
, CDir
*newdir
)
1318 dout(10) << "project_subtree_rename " << *diri
<< " from " << *olddir
1319 << " to " << *newdir
<< dendl
;
1320 projected_subtree_renames
[diri
].push_back(pair
<CDir
*,CDir
*>(olddir
, newdir
));
1323 void MDCache::adjust_subtree_after_rename(CInode
*diri
, CDir
*olddir
, bool pop
)
1325 dout(10) << "adjust_subtree_after_rename " << *diri
<< " from " << *olddir
<< dendl
;
1329 CDir
*newdir
= diri
->get_parent_dir();
1332 map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.find(diri
);
1333 assert(p
!= projected_subtree_renames
.end());
1334 assert(!p
->second
.empty());
1335 assert(p
->second
.front().first
== olddir
);
1336 assert(p
->second
.front().second
== newdir
);
1337 p
->second
.pop_front();
1338 if (p
->second
.empty())
1339 projected_subtree_renames
.erase(p
);
1344 // make sure subtree dirfrags are at the front of the list
1345 diri
->get_subtree_dirfrags(dfls
);
1346 diri
->get_nested_dirfrags(dfls
);
1347 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
1350 dout(10) << "dirfrag " << *dir
<< dendl
;
1351 CDir
*oldparent
= get_subtree_root(olddir
);
1352 dout(10) << " old parent " << *oldparent
<< dendl
;
1353 CDir
*newparent
= get_subtree_root(newdir
);
1354 dout(10) << " new parent " << *newparent
<< dendl
;
1356 if (oldparent
== newparent
) {
1357 dout(10) << "parent unchanged for " << *dir
<< " at " << *oldparent
<< dendl
;
1361 if (dir
->is_subtree_root()) {
1362 // children are fine. change parent.
1363 dout(10) << "moving " << *dir
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1364 assert(subtrees
[oldparent
].count(dir
));
1365 subtrees
[oldparent
].erase(dir
);
1366 assert(subtrees
.count(newparent
));
1367 subtrees
[newparent
].insert(dir
);
1368 // caller is responsible for 'eval diri'
1369 try_subtree_merge_at(dir
, NULL
);
1373 // see if any old bounds move to the new parent.
1375 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
1376 p
!= subtrees
[oldparent
].end();
1379 CDir
*broot
= get_subtree_root(bound
->get_parent_dir());
1380 if (broot
!= oldparent
) {
1381 assert(broot
== newparent
);
1382 tomove
.push_back(bound
);
1385 for (list
<CDir
*>::iterator p
= tomove
.begin(); p
!= tomove
.end(); ++p
) {
1387 dout(10) << "moving bound " << *bound
<< " from " << *oldparent
<< " to " << *newparent
<< dendl
;
1388 subtrees
[oldparent
].erase(bound
);
1389 subtrees
[newparent
].insert(bound
);
1393 if (oldparent
->authority() != newparent
->authority()) {
1394 adjust_subtree_auth(dir
, oldparent
->authority());
1395 // caller is responsible for 'eval diri'
1396 try_subtree_merge_at(dir
, NULL
);
1405 void MDCache::get_fullauth_subtrees(set
<CDir
*>& s
)
1407 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1408 p
!= subtrees
.end();
1410 CDir
*root
= p
->first
;
1411 if (root
->is_full_dir_auth())
1415 void MDCache::get_auth_subtrees(set
<CDir
*>& s
)
1417 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1418 p
!= subtrees
.end();
1420 CDir
*root
= p
->first
;
1421 if (root
->is_auth())
1429 int MDCache::num_subtrees()
1431 return subtrees
.size();
1434 int MDCache::num_subtrees_fullauth()
1437 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1438 p
!= subtrees
.end();
1440 CDir
*root
= p
->first
;
1441 if (root
->is_full_dir_auth())
1447 int MDCache::num_subtrees_fullnonauth()
1450 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
1451 p
!= subtrees
.end();
1453 CDir
*root
= p
->first
;
1454 if (root
->is_full_dir_nonauth())
1462 // ===================================
1463 // journal and snap/cow helpers
1467 * find first inode in cache that follows given snapid. otherwise, return current.
1469 CInode
*MDCache::pick_inode_snap(CInode
*in
, snapid_t follows
)
1471 dout(10) << "pick_inode_snap follows " << follows
<< " on " << *in
<< dendl
;
1472 assert(in
->last
== CEPH_NOSNAP
);
1474 auto p
= snap_inode_map
.upper_bound(vinodeno_t(in
->ino(), follows
));
1475 if (p
!= snap_inode_map
.end() && p
->second
->ino() == in
->ino()) {
1476 dout(10) << "pick_inode_snap found " << *p
->second
<< dendl
;
1485 * note: i'm currently cheating wrt dirty and inode.version on cow
1486 * items. instead of doing a full dir predirty, i just take the
1487 * original item's version, and set the dirty flag (via
1488 * mutation::add_cow_{inode,dentry}() and mutation::apply(). that
1489 * means a special case in the dir commit clean sweep assertions.
1492 CInode
*MDCache::cow_inode(CInode
*in
, snapid_t last
)
1494 assert(last
>= in
->first
);
1496 CInode
*oldin
= new CInode(this, true, in
->first
, last
);
1497 oldin
->inode
= *in
->get_previous_projected_inode();
1498 oldin
->symlink
= in
->symlink
;
1499 oldin
->xattrs
= *in
->get_previous_projected_xattrs();
1500 oldin
->inode
.trim_client_ranges(last
);
1502 if (in
->first
< in
->oldest_snap
)
1503 in
->oldest_snap
= in
->first
;
1507 dout(10) << "cow_inode " << *in
<< " to " << *oldin
<< dendl
;
1510 if (in
->last
!= CEPH_NOSNAP
) {
1511 CInode
*head_in
= get_inode(in
->ino());
1513 if (head_in
->split_need_snapflush(oldin
, in
)) {
1514 oldin
->client_snap_caps
= in
->client_snap_caps
;
1515 for (const auto &p
: in
->client_snap_caps
) {
1516 SimpleLock
*lock
= oldin
->get_lock(p
.first
);
1518 for (const auto &q
: p
.second
) {
1519 oldin
->auth_pin(lock
);
1520 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1521 lock
->get_wrlock(true);
1522 (void)q
; /* unused */
1529 if (!in
->client_caps
.empty()) {
1530 const set
<snapid_t
>& snaps
= in
->find_snaprealm()->get_snaps();
1532 for (auto &p
: in
->client_caps
) {
1533 client_t client
= p
.first
;
1534 Capability
*cap
= p
.second
;
1535 int issued
= cap
->issued();
1536 if ((issued
& CEPH_CAP_ANY_WR
) &&
1537 cap
->client_follows
< last
) {
1539 for (int i
= 0; i
< num_cinode_locks
; i
++) {
1540 if (issued
& cinode_lock_info
[i
].wr_caps
) {
1541 int lockid
= cinode_lock_info
[i
].lock
;
1542 SimpleLock
*lock
= oldin
->get_lock(lockid
);
1544 oldin
->client_snap_caps
[lockid
].insert(client
);
1545 oldin
->auth_pin(lock
);
1546 lock
->set_state(LOCK_SNAP_SYNC
); // gathering
1547 lock
->get_wrlock(true);
1548 dout(10) << " client." << client
<< " cap " << ccap_string(issued
& cinode_lock_info
[i
].wr_caps
)
1549 << " wrlock lock " << *lock
<< " on " << *oldin
<< dendl
;
1552 cap
->client_follows
= last
;
1554 // we need snapflushes for any intervening snaps
1555 dout(10) << " snaps " << snaps
<< dendl
;
1556 for (auto q
= snaps
.lower_bound(oldin
->first
);
1557 q
!= snaps
.end() && *q
<= last
;
1559 in
->add_need_snapflush(oldin
, *q
, client
);
1562 dout(10) << " ignoring client." << client
<< " cap follows " << cap
->client_follows
<< dendl
;
1569 void MDCache::journal_cow_dentry(MutationImpl
*mut
, EMetaBlob
*metablob
,
1570 CDentry
*dn
, snapid_t follows
,
1571 CInode
**pcow_inode
, CDentry::linkage_t
*dnl
)
1574 dout(10) << "journal_cow_dentry got null CDentry, returning" << dendl
;
1577 dout(10) << "journal_cow_dentry follows " << follows
<< " on " << *dn
<< dendl
;
1578 assert(dn
->is_auth());
1580 // nothing to cow on a null dentry, fix caller
1582 dnl
= dn
->get_projected_linkage();
1583 assert(!dnl
->is_null());
1585 if (dnl
->is_primary() && dnl
->get_inode()->is_multiversion()) {
1586 // multiversion inode.
1587 CInode
*in
= dnl
->get_inode();
1588 SnapRealm
*realm
= NULL
;
1590 if (in
->get_projected_parent_dn() != dn
) {
1591 assert(follows
== CEPH_NOSNAP
);
1592 realm
= dn
->dir
->inode
->find_snaprealm();
1593 snapid_t dir_follows
= realm
->get_newest_snap();
1595 if (dir_follows
+1 > dn
->first
) {
1596 snapid_t oldfirst
= dn
->first
;
1597 dn
->first
= dir_follows
+1;
1598 if (realm
->has_snaps_in_range(oldfirst
, dir_follows
)) {
1599 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->get_name(), in
->ino(), in
->d_type(),
1600 oldfirst
, dir_follows
);
1602 dout(10) << " olddn " << *olddn
<< dendl
;
1603 metablob
->add_remote_dentry(olddn
, true);
1604 mut
->add_cow_dentry(olddn
);
1605 // FIXME: adjust link count here? hmm.
1607 if (dir_follows
+1 > in
->first
)
1608 in
->cow_old_inode(dir_follows
, false);
1612 if (in
->snaprealm
) {
1613 realm
= in
->snaprealm
;
1614 follows
= realm
->get_newest_seq();
1616 follows
= dir_follows
;
1618 realm
= in
->find_snaprealm();
1619 if (follows
== CEPH_NOSNAP
)
1620 follows
= realm
->get_newest_seq();
1624 if (follows
< in
->first
) {
1625 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *in
<< dendl
;
1629 if (!realm
->has_snaps_in_range(in
->first
, follows
)) {
1630 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *in
<< dendl
;
1631 in
->first
= follows
+ 1;
1635 in
->cow_old_inode(follows
, false);
1638 SnapRealm
*realm
= dn
->dir
->inode
->find_snaprealm();
1639 if (follows
== CEPH_NOSNAP
)
1640 follows
= realm
->get_newest_seq();
1643 if (follows
< dn
->first
) {
1644 dout(10) << "journal_cow_dentry follows " << follows
<< " < first on " << *dn
<< dendl
;
1648 // update dn.first before adding old dentry to cdir's map
1649 snapid_t oldfirst
= dn
->first
;
1650 dn
->first
= follows
+1;
1652 CInode
*in
= dnl
->is_primary() ? dnl
->get_inode() : NULL
;
1654 if (!realm
->has_snaps_in_range(oldfirst
, follows
)) {
1655 dout(10) << "journal_cow_dentry no snapshot follows " << follows
<< " on " << *dn
<< dendl
;
1657 in
->first
= follows
+1;
1661 dout(10) << " dn " << *dn
<< dendl
;
1663 CInode
*oldin
= cow_inode(in
, follows
);
1664 mut
->add_cow_inode(oldin
);
1666 *pcow_inode
= oldin
;
1667 CDentry
*olddn
= dn
->dir
->add_primary_dentry(dn
->get_name(), oldin
, oldfirst
, oldin
->last
);
1668 oldin
->inode
.version
= olddn
->pre_dirty();
1669 dout(10) << " olddn " << *olddn
<< dendl
;
1670 bool need_snapflush
= !oldin
->client_snap_caps
.empty();
1672 mut
->ls
->open_files
.push_back(&oldin
->item_open_file
);
1673 metablob
->add_primary_dentry(olddn
, 0, true, false, false, need_snapflush
);
1674 mut
->add_cow_dentry(olddn
);
1676 assert(dnl
->is_remote());
1677 CDentry
*olddn
= dn
->dir
->add_remote_dentry(dn
->get_name(), dnl
->get_remote_ino(), dnl
->get_remote_d_type(),
1680 dout(10) << " olddn " << *olddn
<< dendl
;
1681 metablob
->add_remote_dentry(olddn
, true);
1682 mut
->add_cow_dentry(olddn
);
1688 void MDCache::journal_cow_inode(MutationRef
& mut
, EMetaBlob
*metablob
,
1689 CInode
*in
, snapid_t follows
,
1690 CInode
**pcow_inode
)
1692 dout(10) << "journal_cow_inode follows " << follows
<< " on " << *in
<< dendl
;
1693 CDentry
*dn
= in
->get_projected_parent_dn();
1694 journal_cow_dentry(mut
.get(), metablob
, dn
, follows
, pcow_inode
);
1697 void MDCache::journal_dirty_inode(MutationImpl
*mut
, EMetaBlob
*metablob
, CInode
*in
, snapid_t follows
)
1699 if (in
->is_base()) {
1700 metablob
->add_root(true, in
, in
->get_projected_inode());
1702 if (follows
== CEPH_NOSNAP
&& in
->last
!= CEPH_NOSNAP
)
1703 follows
= in
->first
- 1;
1704 CDentry
*dn
= in
->get_projected_parent_dn();
1705 if (!dn
->get_projected_linkage()->is_null()) // no need to cow a null dentry
1706 journal_cow_dentry(mut
, metablob
, dn
, follows
);
1707 if (in
->get_projected_inode()->is_backtrace_updated()) {
1708 bool dirty_pool
= in
->get_projected_inode()->layout
.pool_id
!=
1709 in
->get_previous_projected_inode()->layout
.pool_id
;
1710 metablob
->add_primary_dentry(dn
, in
, true, true, dirty_pool
);
1712 metablob
->add_primary_dentry(dn
, in
, true);
1719 // nested ---------------------------------------------------------------
1721 void MDCache::project_rstat_inode_to_frag(CInode
*cur
, CDir
*parent
, snapid_t first
,
1722 int linkunlink
, SnapRealm
*prealm
)
1724 CDentry
*parentdn
= cur
->get_projected_parent_dn();
1725 CInode::mempool_inode
*curi
= cur
->get_projected_inode();
1727 if (cur
->first
> first
)
1730 dout(10) << "projected_rstat_inode_to_frag first " << first
<< " linkunlink " << linkunlink
1731 << " " << *cur
<< dendl
;
1732 dout(20) << " frag head is [" << parent
->first
<< ",head] " << dendl
;
1733 dout(20) << " inode update is [" << first
<< "," << cur
->last
<< "]" << dendl
;
1736 * FIXME. this incompletely propagates rstats to _old_ parents
1737 * (i.e. shortly after a directory rename). but we need full
1738 * blown hard link backpointers to make this work properly...
1740 snapid_t floor
= parentdn
->first
;
1741 dout(20) << " floor of " << floor
<< " from parent dn " << *parentdn
<< dendl
;
1744 prealm
= parent
->inode
->find_snaprealm();
1745 const set
<snapid_t
> snaps
= prealm
->get_snaps();
1747 if (cur
->last
!= CEPH_NOSNAP
) {
1748 assert(cur
->dirty_old_rstats
.empty());
1749 set
<snapid_t
>::const_iterator q
= snaps
.lower_bound(MAX(first
, floor
));
1750 if (q
== snaps
.end() || *q
> cur
->last
)
1754 if (cur
->last
>= floor
) {
1756 if (cur
->state_test(CInode::STATE_AMBIGUOUSAUTH
) && cur
->is_auth()) {
1757 // rename src inode is not projected in the slave rename prep case. so we should
1758 // avoid updateing the inode.
1759 assert(linkunlink
< 0);
1760 assert(cur
->is_frozen_inode());
1763 _project_rstat_inode_to_frag(*curi
, MAX(first
, floor
), cur
->last
, parent
,
1764 linkunlink
, update
);
1767 if (g_conf
->mds_snap_rstat
) {
1768 for (const auto &p
: cur
->dirty_old_rstats
) {
1769 auto &old
= cur
->old_inodes
[p
];
1770 snapid_t ofirst
= std::max(old
.first
, floor
);
1771 auto it
= snaps
.lower_bound(ofirst
);
1772 if (it
== snaps
.end() || *it
> p
)
1775 _project_rstat_inode_to_frag(old
.inode
, ofirst
, p
, parent
, 0, false);
1778 cur
->dirty_old_rstats
.clear();
1782 void MDCache::_project_rstat_inode_to_frag(CInode::mempool_inode
& inode
, snapid_t ofirst
, snapid_t last
,
1783 CDir
*parent
, int linkunlink
, bool update_inode
)
1785 dout(10) << "_project_rstat_inode_to_frag [" << ofirst
<< "," << last
<< "]" << dendl
;
1786 dout(20) << " inode rstat " << inode
.rstat
<< dendl
;
1787 dout(20) << " inode accounted_rstat " << inode
.accounted_rstat
<< dendl
;
1789 if (linkunlink
== 0) {
1790 delta
.add(inode
.rstat
);
1791 delta
.sub(inode
.accounted_rstat
);
1792 } else if (linkunlink
< 0) {
1793 delta
.sub(inode
.accounted_rstat
);
1795 delta
.add(inode
.rstat
);
1797 dout(20) << " delta " << delta
<< dendl
;
1800 inode
.accounted_rstat
= inode
.rstat
;
1802 while (last
>= ofirst
) {
1804 * pick fnode version to update. at each iteration, we want to
1805 * pick a segment ending in 'last' to update. split as necessary
1806 * to make that work. then, adjust first up so that we only
1807 * update one segment at a time. then loop to cover the whole
1808 * [ofirst,last] interval.
1810 nest_info_t
*prstat
;
1812 fnode_t
*pf
= parent
->get_projected_fnode();
1813 if (last
== CEPH_NOSNAP
) {
1814 if (g_conf
->mds_snap_rstat
)
1815 first
= MAX(ofirst
, parent
->first
);
1817 first
= parent
->first
;
1818 prstat
= &pf
->rstat
;
1819 dout(20) << " projecting to head [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1821 if (first
> parent
->first
&&
1822 !(pf
->rstat
== pf
->accounted_rstat
)) {
1823 dout(10) << " target snapped and not fully accounted, cow to dirty_old_rstat ["
1824 << parent
->first
<< "," << (first
-1) << "] "
1825 << " " << *prstat
<< "/" << pf
->accounted_rstat
1827 parent
->dirty_old_rstat
[first
-1].first
= parent
->first
;
1828 parent
->dirty_old_rstat
[first
-1].rstat
= pf
->rstat
;
1829 parent
->dirty_old_rstat
[first
-1].accounted_rstat
= pf
->accounted_rstat
;
1831 parent
->first
= first
;
1832 } else if (!g_conf
->mds_snap_rstat
) {
1833 // drop snapshots' rstats
1835 } else if (last
>= parent
->first
) {
1836 first
= parent
->first
;
1837 parent
->dirty_old_rstat
[last
].first
= first
;
1838 parent
->dirty_old_rstat
[last
].rstat
= pf
->rstat
;
1839 parent
->dirty_old_rstat
[last
].accounted_rstat
= pf
->accounted_rstat
;
1840 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1841 dout(10) << " projecting to newly split dirty_old_fnode [" << first
<< "," << last
<< "] "
1842 << " " << *prstat
<< "/" << pf
->accounted_rstat
<< dendl
;
1844 // be careful, dirty_old_rstat is a _sparse_ map.
1845 // sorry, this is ugly.
1848 // find any intersection with last
1849 auto it
= parent
->dirty_old_rstat
.lower_bound(last
);
1850 if (it
== parent
->dirty_old_rstat
.end()) {
1851 dout(20) << " no dirty_old_rstat with last >= last " << last
<< dendl
;
1852 if (!parent
->dirty_old_rstat
.empty() && parent
->dirty_old_rstat
.rbegin()->first
>= first
) {
1853 dout(20) << " last dirty_old_rstat ends at " << parent
->dirty_old_rstat
.rbegin()->first
<< dendl
;
1854 first
= parent
->dirty_old_rstat
.rbegin()->first
+1;
1857 // *it last is >= last
1858 if (it
->second
.first
<= last
) {
1859 // *it intersects [first,last]
1860 if (it
->second
.first
< first
) {
1861 dout(10) << " splitting off left bit [" << it
->second
.first
<< "," << first
-1 << "]" << dendl
;
1862 parent
->dirty_old_rstat
[first
-1] = it
->second
;
1863 it
->second
.first
= first
;
1865 if (it
->second
.first
> first
)
1866 first
= it
->second
.first
;
1867 if (last
< it
->first
) {
1868 dout(10) << " splitting off right bit [" << last
+1 << "," << it
->first
<< "]" << dendl
;
1869 parent
->dirty_old_rstat
[last
] = it
->second
;
1870 it
->second
.first
= last
+1;
1873 // *it is to the _right_ of [first,last]
1874 it
= parent
->dirty_old_rstat
.lower_bound(first
);
1875 // new *it last is >= first
1876 if (it
->second
.first
<= last
&& // new *it isn't also to the right, and
1877 it
->first
>= first
) { // it intersects our first bit,
1878 dout(10) << " staying to the right of [" << it
->second
.first
<< "," << it
->first
<< "]..." << dendl
;
1879 first
= it
->first
+1;
1881 dout(10) << " projecting to new dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1884 dout(20) << " projecting to dirty_old_rstat [" << first
<< "," << last
<< "]" << dendl
;
1885 parent
->dirty_old_rstat
[last
].first
= first
;
1886 prstat
= &parent
->dirty_old_rstat
[last
].rstat
;
1890 dout(20) << " project to [" << first
<< "," << last
<< "] " << *prstat
<< dendl
;
1891 assert(last
>= first
);
1894 inode
.accounted_rstat
= inode
.rstat
;
1895 dout(20) << " result [" << first
<< "," << last
<< "] " << *prstat
<< " " << *parent
<< dendl
;
1901 void MDCache::project_rstat_frag_to_inode(nest_info_t
& rstat
, nest_info_t
& accounted_rstat
,
1902 snapid_t ofirst
, snapid_t last
,
1903 CInode
*pin
, bool cow_head
)
1905 dout(10) << "project_rstat_frag_to_inode [" << ofirst
<< "," << last
<< "]" << dendl
;
1906 dout(20) << " frag rstat " << rstat
<< dendl
;
1907 dout(20) << " frag accounted_rstat " << accounted_rstat
<< dendl
;
1908 nest_info_t delta
= rstat
;
1909 delta
.sub(accounted_rstat
);
1910 dout(20) << " delta " << delta
<< dendl
;
1912 while (last
>= ofirst
) {
1913 CInode::mempool_inode
*pi
;
1915 if (last
== pin
->last
) {
1916 pi
= pin
->get_projected_inode();
1917 first
= MAX(ofirst
, pin
->first
);
1918 if (first
> pin
->first
) {
1919 auto &old
= pin
->cow_old_inode(first
-1, cow_head
);
1920 dout(20) << " cloned old_inode rstat is " << old
.inode
.rstat
<< dendl
;
1923 if (last
>= pin
->first
) {
1925 pin
->cow_old_inode(last
, cow_head
);
1927 // our life is easier here because old_inodes is not sparse
1928 // (although it may not begin at snapid 1)
1929 auto it
= pin
->old_inodes
.lower_bound(last
);
1930 if (it
== pin
->old_inodes
.end()) {
1931 dout(10) << " no old_inode <= " << last
<< ", done." << dendl
;
1934 first
= it
->second
.first
;
1936 dout(10) << " oldest old_inode is [" << first
<< "," << it
->first
<< "], done." << dendl
;
1937 //assert(p == pin->old_inodes.begin());
1940 if (it
->first
> last
) {
1941 dout(10) << " splitting right old_inode [" << first
<< "," << it
->first
<< "] to ["
1942 << (last
+1) << "," << it
->first
<< "]" << dendl
;
1943 pin
->old_inodes
[last
] = it
->second
;
1944 it
->second
.first
= last
+1;
1945 pin
->dirty_old_rstats
.insert(it
->first
);
1948 if (first
< ofirst
) {
1949 dout(10) << " splitting left old_inode [" << first
<< "," << last
<< "] to ["
1950 << first
<< "," << ofirst
-1 << "]" << dendl
;
1951 pin
->old_inodes
[ofirst
-1] = pin
->old_inodes
[last
];
1952 pin
->dirty_old_rstats
.insert(ofirst
-1);
1953 pin
->old_inodes
[last
].first
= first
= ofirst
;
1955 pi
= &pin
->old_inodes
[last
].inode
;
1956 pin
->dirty_old_rstats
.insert(last
);
1958 dout(20) << " projecting to [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1959 pi
->rstat
.add(delta
);
1960 dout(20) << " result [" << first
<< "," << last
<< "] " << pi
->rstat
<< dendl
;
1966 void MDCache::broadcast_quota_to_client(CInode
*in
)
1968 if (!in
->is_auth() || in
->is_frozen())
1971 auto i
= in
->get_projected_inode();
1973 if (!i
->quota
.is_enable())
1976 for (map
<client_t
,Capability
*>::iterator it
= in
->client_caps
.begin();
1977 it
!= in
->client_caps
.end();
1979 Session
*session
= mds
->get_session(it
->first
);
1980 if (!session
|| !session
->connection
||
1981 !session
->connection
->has_feature(CEPH_FEATURE_MDS_QUOTA
))
1984 Capability
*cap
= it
->second
;
1985 if (cap
->last_rbytes
== i
->rstat
.rbytes
&&
1986 cap
->last_rsize
== i
->rstat
.rsize())
1989 if (i
->quota
.max_files
> 0) {
1990 if (i
->rstat
.rsize() >= i
->quota
.max_files
)
1993 if ((abs(cap
->last_rsize
- i
->quota
.max_files
) >> 4) <
1994 abs(cap
->last_rsize
- i
->rstat
.rsize()))
1998 if (i
->quota
.max_bytes
> 0) {
1999 if (i
->rstat
.rbytes
> i
->quota
.max_bytes
- (i
->quota
.max_bytes
>> 3))
2002 if ((abs(cap
->last_rbytes
- i
->quota
.max_bytes
) >> 4) <
2003 abs(cap
->last_rbytes
- i
->rstat
.rbytes
))
2010 cap
->last_rsize
= i
->rstat
.rsize();
2011 cap
->last_rbytes
= i
->rstat
.rbytes
;
2013 MClientQuota
*msg
= new MClientQuota();
2014 msg
->ino
= in
->ino();
2015 msg
->rstat
= i
->rstat
;
2016 msg
->quota
= i
->quota
;
2017 mds
->send_message_client_counted(msg
, session
->connection
);
2019 for (const auto &it
: in
->get_replicas()) {
2020 MGatherCaps
*msg
= new MGatherCaps
;
2021 msg
->ino
= in
->ino();
2022 mds
->send_message_mds(msg
, it
.first
);
2027 * NOTE: we _have_ to delay the scatter if we are called during a
2028 * rejoin, because we can't twiddle locks between when the
2029 * rejoin_(weak|strong) is received and when we send the rejoin_ack.
2030 * normally, this isn't a problem: a recover mds doesn't twiddle locks
2031 * (no requests), and a survivor acks immediately. _except_ that
2032 * during rejoin_(weak|strong) processing, we may complete a lock
2033 * gather, and do a scatter_writebehind.. and we _can't_ twiddle the
2034 * scatterlock state in that case or the lock states will get out of
2035 * sync between the auth and replica.
2037 * the simple solution is to never do the scatter here. instead, put
2038 * the scatterlock on a list if it isn't already wrlockable. this is
2039 * probably the best plan anyway, since we avoid too many
2040 * scatters/locks under normal usage.
2043 * some notes on dirlock/nestlock scatterlock semantics:
2045 * the fragstat (dirlock) will never be updated without
2046 * dirlock+nestlock wrlock held by the caller.
2048 * the rstat (nestlock) _may_ get updated without a wrlock when nested
2049 * data is pushed up the tree. this could be changed with some
2050 * restructuring here, but in its current form we ensure that the
2051 * fragstat+rstat _always_ reflect an accurrate summation over the dir
2052 * frag, which is nice. and, we only need to track frags that need to
2053 * be nudged (and not inodes with pending rstat changes that need to
2054 * be pushed into the frag). a consequence of this is that the
2055 * accounted_rstat on scatterlock sync may not match our current
2056 * rstat. this is normal and expected.
2058 void MDCache::predirty_journal_parents(MutationRef mut
, EMetaBlob
*blob
,
2059 CInode
*in
, CDir
*parent
,
2060 int flags
, int linkunlink
,
2063 bool primary_dn
= flags
& PREDIRTY_PRIMARY
;
2064 bool do_parent_mtime
= flags
& PREDIRTY_DIR
;
2065 bool shallow
= flags
& PREDIRTY_SHALLOW
;
2067 assert(mds
->mdlog
->entry_is_open());
2069 // make sure stamp is set
2070 if (mut
->get_mds_stamp() == utime_t())
2071 mut
->set_mds_stamp(ceph_clock_now());
2076 dout(10) << "predirty_journal_parents"
2077 << (do_parent_mtime
? " do_parent_mtime":"")
2078 << " linkunlink=" << linkunlink
2079 << (primary_dn
? " primary_dn":" remote_dn")
2080 << (shallow
? " SHALLOW":"")
2081 << " follows " << cfollows
2082 << " " << *in
<< dendl
;
2086 parent
= in
->get_projected_parent_dn()->get_dir();
2089 if (flags
== 0 && linkunlink
== 0) {
2090 dout(10) << " no flags/linkunlink, just adding dir context to blob(s)" << dendl
;
2091 blob
->add_dir_context(parent
);
2095 // build list of inodes to wrlock, dirty, and update
2098 CDentry
*parentdn
= NULL
;
2101 //assert(cur->is_auth() || !primary_dn); // this breaks the rename auth twiddle hack
2102 assert(parent
->is_auth());
2104 // opportunistically adjust parent dirfrag
2105 CInode
*pin
= parent
->get_inode();
2108 mut
->auth_pin(parent
);
2109 mut
->add_projected_fnode(parent
);
2111 fnode_t
*pf
= parent
->project_fnode();
2112 pf
->version
= parent
->pre_dirty();
2114 if (do_parent_mtime
|| linkunlink
) {
2115 assert(mut
->wrlocks
.count(&pin
->filelock
));
2116 assert(mut
->wrlocks
.count(&pin
->nestlock
));
2117 assert(cfollows
== CEPH_NOSNAP
);
2119 // update stale fragstat/rstat?
2120 parent
->resync_accounted_fragstat();
2121 parent
->resync_accounted_rstat();
2123 if (do_parent_mtime
) {
2124 pf
->fragstat
.mtime
= mut
->get_op_stamp();
2125 pf
->fragstat
.change_attr
++;
2126 dout(10) << "predirty_journal_parents bumping change_attr to " << pf
->fragstat
.change_attr
<< " on " << parent
<< dendl
;
2127 if (pf
->fragstat
.mtime
> pf
->rstat
.rctime
) {
2128 dout(10) << "predirty_journal_parents updating mtime on " << *parent
<< dendl
;
2129 pf
->rstat
.rctime
= pf
->fragstat
.mtime
;
2131 dout(10) << "predirty_journal_parents updating mtime UNDERWATER on " << *parent
<< dendl
;
2135 dout(10) << "predirty_journal_parents updating size on " << *parent
<< dendl
;
2137 pf
->fragstat
.nsubdirs
+= linkunlink
;
2138 //pf->rstat.rsubdirs += linkunlink;
2140 pf
->fragstat
.nfiles
+= linkunlink
;
2141 //pf->rstat.rfiles += linkunlink;
2148 // don't update parent this pass
2149 } else if (!linkunlink
&& !(pin
->nestlock
.can_wrlock(-1) &&
2150 pin
->versionlock
.can_wrlock())) {
2151 dout(20) << " unwritable parent nestlock " << pin
->nestlock
2152 << ", marking dirty rstat on " << *cur
<< dendl
;
2153 cur
->mark_dirty_rstat();
2155 // if we don't hold a wrlock reference on this nestlock, take one,
2156 // because we are about to write into the dirfrag fnode and that needs
2157 // to commit before the lock can cycle.
2159 assert(pin
->nestlock
.get_num_wrlocks() || mut
->is_slave());
2162 if (mut
->wrlocks
.count(&pin
->nestlock
) == 0) {
2163 dout(10) << " taking wrlock on " << pin
->nestlock
<< " on " << *pin
<< dendl
;
2164 mds
->locker
->wrlock_force(&pin
->nestlock
, mut
);
2167 // now we can project the inode rstat diff the dirfrag
2168 SnapRealm
*prealm
= pin
->find_snaprealm();
2170 snapid_t follows
= cfollows
;
2171 if (follows
== CEPH_NOSNAP
)
2172 follows
= prealm
->get_newest_seq();
2174 snapid_t first
= follows
+1;
2176 // first, if the frag is stale, bring it back in sync.
2177 parent
->resync_accounted_rstat();
2179 // now push inode rstats into frag
2180 project_rstat_inode_to_frag(cur
, parent
, first
, linkunlink
, prealm
);
2181 cur
->clear_dirty_rstat();
2185 if (!pin
->is_auth() || (!mut
->is_auth_pinned(pin
) && !pin
->can_auth_pin())) {
2186 dout(10) << "predirty_journal_parents !auth or ambig or can't authpin on " << *pin
<< dendl
;
2190 // delay propagating until later?
2191 if (!stop
&& !first
&&
2192 g_conf
->mds_dirstat_min_interval
> 0) {
2193 double since_last_prop
= mut
->get_mds_stamp() - pin
->last_dirstat_prop
;
2194 if (since_last_prop
< g_conf
->mds_dirstat_min_interval
) {
2195 dout(10) << "predirty_journal_parents last prop " << since_last_prop
2196 << " < " << g_conf
->mds_dirstat_min_interval
2197 << ", stopping" << dendl
;
2200 dout(10) << "predirty_journal_parents last prop " << since_last_prop
<< " ago, continuing" << dendl
;
2204 // can cast only because i'm passing nowait=true in the sole user
2205 MDRequestRef mdmut
= static_cast<MDRequestImpl
*>(mut
.get());
2207 mut
->wrlocks
.count(&pin
->nestlock
) == 0 &&
2208 (!pin
->versionlock
.can_wrlock() || // make sure we can take versionlock, too
2210 !mds
->locker
->wrlock_start(&pin
->nestlock
, mdmut
, true)
2211 )) { // ** do not initiate.. see above comment **
2212 dout(10) << "predirty_journal_parents can't wrlock one of " << pin
->versionlock
<< " or " << pin
->nestlock
2213 << " on " << *pin
<< dendl
;
2217 dout(10) << "predirty_journal_parents stop. marking nestlock on " << *pin
<< dendl
;
2218 mds
->locker
->mark_updated_scatterlock(&pin
->nestlock
);
2219 mut
->ls
->dirty_dirfrag_nest
.push_back(&pin
->item_dirty_dirfrag_nest
);
2220 mut
->add_updated_lock(&pin
->nestlock
);
2221 if (do_parent_mtime
|| linkunlink
) {
2222 mds
->locker
->mark_updated_scatterlock(&pin
->filelock
);
2223 mut
->ls
->dirty_dirfrag_dir
.push_back(&pin
->item_dirty_dirfrag_dir
);
2224 mut
->add_updated_lock(&pin
->filelock
);
2228 if (!mut
->wrlocks
.count(&pin
->versionlock
))
2229 mds
->locker
->local_wrlock_grab(&pin
->versionlock
, mut
);
2231 assert(mut
->wrlocks
.count(&pin
->nestlock
) ||
2234 pin
->last_dirstat_prop
= mut
->get_mds_stamp();
2238 mut
->add_projected_inode(pin
);
2239 lsi
.push_front(pin
);
2241 pin
->pre_cow_old_inode(); // avoid cow mayhem!
2243 auto &pi
= pin
->project_inode();
2244 pi
.inode
.version
= pin
->pre_dirty();
2247 if (do_parent_mtime
|| linkunlink
) {
2248 dout(20) << "predirty_journal_parents add_delta " << pf
->fragstat
<< dendl
;
2249 dout(20) << "predirty_journal_parents - " << pf
->accounted_fragstat
<< dendl
;
2250 bool touched_mtime
= false, touched_chattr
= false;
2251 pi
.inode
.dirstat
.add_delta(pf
->fragstat
, pf
->accounted_fragstat
, &touched_mtime
, &touched_chattr
);
2252 pf
->accounted_fragstat
= pf
->fragstat
;
2254 pi
.inode
.mtime
= pi
.inode
.ctime
= pi
.inode
.dirstat
.mtime
;
2256 pi
.inode
.change_attr
= pi
.inode
.dirstat
.change_attr
;
2257 dout(20) << "predirty_journal_parents gives " << pi
.inode
.dirstat
<< " on " << *pin
<< dendl
;
2259 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2260 if (pi
.inode
.dirstat
.size() < 0)
2261 assert(!"negative dirstat size" == g_conf
->mds_verify_scatter
);
2262 if (pi
.inode
.dirstat
.size() != pf
->fragstat
.size()) {
2263 mds
->clog
->error() << "unmatched fragstat size on single dirfrag "
2264 << parent
->dirfrag() << ", inode has " << pi
.inode
.dirstat
2265 << ", dirfrag has " << pf
->fragstat
;
2267 // trust the dirfrag for now
2268 pi
.inode
.dirstat
= pf
->fragstat
;
2270 assert(!"unmatched fragstat size" == g_conf
->mds_verify_scatter
);
2276 * the rule here is to follow the _oldest_ parent with dirty rstat
2277 * data. if we don't propagate all data, we add ourselves to the
2278 * nudge list. that way all rstat data will (eventually) get
2279 * pushed up the tree.
2281 * actually, no. for now, silently drop rstats for old parents. we need
2282 * hard link backpointers to do the above properly.
2288 parentdn
= pin
->get_projected_parent_dn();
2292 dout(10) << "predirty_journal_parents frag->inode on " << *parent
<< dendl
;
2294 // first, if the frag is stale, bring it back in sync.
2295 parent
->resync_accounted_rstat();
2297 if (g_conf
->mds_snap_rstat
) {
2298 for (auto &p
: parent
->dirty_old_rstat
) {
2299 project_rstat_frag_to_inode(p
.second
.rstat
, p
.second
.accounted_rstat
, p
.second
.first
,
2300 p
.first
, pin
, true);
2303 parent
->dirty_old_rstat
.clear();
2304 project_rstat_frag_to_inode(pf
->rstat
, pf
->accounted_rstat
, parent
->first
, CEPH_NOSNAP
, pin
, true);//false);
2306 pf
->accounted_rstat
= pf
->rstat
;
2308 if (parent
->get_frag() == frag_t()) { // i.e., we are the only frag
2309 if (pi
.inode
.rstat
.rbytes
!= pf
->rstat
.rbytes
) {
2310 mds
->clog
->error() << "unmatched rstat rbytes on single dirfrag "
2311 << parent
->dirfrag() << ", inode has " << pi
.inode
.rstat
2312 << ", dirfrag has " << pf
->rstat
;
2314 // trust the dirfrag for now
2315 pi
.inode
.rstat
= pf
->rstat
;
2317 assert(!"unmatched rstat rbytes" == g_conf
->mds_verify_scatter
);
2321 parent
->check_rstats();
2322 broadcast_quota_to_client(pin
);
2325 parent
= parentdn
->get_dir();
2327 do_parent_mtime
= false;
2332 // now, stick it in the blob
2334 assert(parent
->is_auth());
2335 blob
->add_dir_context(parent
);
2336 blob
->add_dir(parent
, true);
2337 for (list
<CInode
*>::iterator p
= lsi
.begin();
2341 journal_dirty_inode(mut
.get(), blob
, cur
);
2350 // ===================================
2355 * some handlers for master requests with slaves. we need to make
2356 * sure slaves journal commits before we forget we mastered them and
2357 * remove them from the uncommitted_masters map (used during recovery
2358 * to commit|abort slaves).
2360 struct C_MDC_CommittedMaster
: public MDCacheLogContext
{
2362 C_MDC_CommittedMaster(MDCache
*s
, metareqid_t r
) : MDCacheLogContext(s
), reqid(r
) {}
2363 void finish(int r
) override
{
2364 mdcache
->_logged_master_commit(reqid
);
2368 void MDCache::log_master_commit(metareqid_t reqid
)
2370 dout(10) << "log_master_commit " << reqid
<< dendl
;
2371 uncommitted_masters
[reqid
].committing
= true;
2372 mds
->mdlog
->start_submit_entry(new ECommitted(reqid
),
2373 new C_MDC_CommittedMaster(this, reqid
));
2376 void MDCache::_logged_master_commit(metareqid_t reqid
)
2378 dout(10) << "_logged_master_commit " << reqid
<< dendl
;
2379 assert(uncommitted_masters
.count(reqid
));
2380 uncommitted_masters
[reqid
].ls
->uncommitted_masters
.erase(reqid
);
2381 mds
->queue_waiters(uncommitted_masters
[reqid
].waiters
);
2382 uncommitted_masters
.erase(reqid
);
2387 void MDCache::committed_master_slave(metareqid_t r
, mds_rank_t from
)
2389 dout(10) << "committed_master_slave mds." << from
<< " on " << r
<< dendl
;
2390 assert(uncommitted_masters
.count(r
));
2391 uncommitted_masters
[r
].slaves
.erase(from
);
2392 if (!uncommitted_masters
[r
].recovering
&& uncommitted_masters
[r
].slaves
.empty())
2393 log_master_commit(r
);
2396 void MDCache::logged_master_update(metareqid_t reqid
)
2398 dout(10) << "logged_master_update " << reqid
<< dendl
;
2399 assert(uncommitted_masters
.count(reqid
));
2400 uncommitted_masters
[reqid
].safe
= true;
2401 if (pending_masters
.count(reqid
)) {
2402 pending_masters
.erase(reqid
);
2403 if (pending_masters
.empty())
2404 process_delayed_resolve();
2409 * Master may crash after receiving all slaves' commit acks, but before journalling
2410 * the final commit. Slaves may crash after journalling the slave commit, but before
2411 * sending commit ack to the master. Commit masters with no uncommitted slave when
2414 void MDCache::finish_committed_masters()
2416 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
2417 p
!= uncommitted_masters
.end();
2419 p
->second
.recovering
= false;
2420 if (!p
->second
.committing
&& p
->second
.slaves
.empty()) {
2421 dout(10) << "finish_committed_masters " << p
->first
<< dendl
;
2422 log_master_commit(p
->first
);
2428 * at end of resolve... we must journal a commit|abort for all slave
2429 * updates, before moving on.
2431 * this is so that the master can safely journal ECommitted on ops it
2432 * masters when it reaches up:active (all other recovering nodes must
2433 * complete resolve before that happens).
2435 struct C_MDC_SlaveCommit
: public MDCacheLogContext
{
2438 C_MDC_SlaveCommit(MDCache
*c
, int f
, metareqid_t r
) : MDCacheLogContext(c
), from(f
), reqid(r
) {}
2439 void finish(int r
) override
{
2440 mdcache
->_logged_slave_commit(from
, reqid
);
2444 void MDCache::_logged_slave_commit(mds_rank_t from
, metareqid_t reqid
)
2446 dout(10) << "_logged_slave_commit from mds." << from
<< " " << reqid
<< dendl
;
2449 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(reqid
, 0, MMDSSlaveRequest::OP_COMMITTED
);
2450 mds
->send_message_mds(req
, from
);
2458 // ====================================================================
2459 // import map, recovery
2461 void MDCache::_move_subtree_map_bound(dirfrag_t df
, dirfrag_t oldparent
, dirfrag_t newparent
,
2462 map
<dirfrag_t
,vector
<dirfrag_t
> >& subtrees
)
2464 if (subtrees
.count(oldparent
)) {
2465 vector
<dirfrag_t
>& v
= subtrees
[oldparent
];
2466 dout(10) << " removing " << df
<< " from " << oldparent
<< " bounds " << v
<< dendl
;
2467 for (vector
<dirfrag_t
>::iterator it
= v
.begin(); it
!= v
.end(); ++it
)
2473 if (subtrees
.count(newparent
)) {
2474 vector
<dirfrag_t
>& v
= subtrees
[newparent
];
2475 dout(10) << " adding " << df
<< " to " << newparent
<< " bounds " << v
<< dendl
;
2480 ESubtreeMap
*MDCache::create_subtree_map()
2482 dout(10) << "create_subtree_map " << num_subtrees() << " subtrees, "
2483 << num_subtrees_fullauth() << " fullauth"
2488 ESubtreeMap
*le
= new ESubtreeMap();
2489 mds
->mdlog
->_start_entry(le
);
2491 map
<dirfrag_t
, CDir
*> dirs_to_add
;
2494 CDir
* mydir
= myin
->get_dirfrag(frag_t());
2495 dirs_to_add
[mydir
->dirfrag()] = mydir
;
2498 // include all auth subtrees, and their bounds.
2499 // and a spanning tree to tie it to the root.
2500 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
2501 p
!= subtrees
.end();
2503 CDir
*dir
= p
->first
;
2505 // journal subtree as "ours" if we are
2508 // me, !me (may be importing and ambiguous!)
2512 if (dir
->get_dir_auth().first
!= mds
->get_nodeid())
2515 if (migrator
->is_ambiguous_import(dir
->dirfrag()) ||
2516 my_ambiguous_imports
.count(dir
->dirfrag())) {
2517 dout(15) << " ambig subtree " << *dir
<< dendl
;
2518 le
->ambiguous_subtrees
.insert(dir
->dirfrag());
2520 dout(15) << " subtree " << *dir
<< dendl
;
2523 dirs_to_add
[dir
->dirfrag()] = dir
;
2524 le
->subtrees
[dir
->dirfrag()].clear();
2528 for (set
<CDir
*>::iterator q
= p
->second
.begin();
2529 q
!= p
->second
.end();
2532 dout(15) << " subtree bound " << *bound
<< dendl
;
2533 dirs_to_add
[bound
->dirfrag()] = bound
;
2534 le
->subtrees
[dir
->dirfrag()].push_back(bound
->dirfrag());
2538 // apply projected renames
2539 for (map
<CInode
*,list
<pair
<CDir
*,CDir
*> > >::iterator p
= projected_subtree_renames
.begin();
2540 p
!= projected_subtree_renames
.end();
2542 for (list
<pair
<CDir
*,CDir
*> >::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
2543 CInode
*diri
= p
->first
;
2544 CDir
*olddir
= q
->first
;
2545 CDir
*newdir
= q
->second
;
2546 dout(10) << " adjusting for projected rename of " << *diri
<< " to " << *newdir
<< dendl
;
2549 diri
->get_dirfrags(dfls
);
2550 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
2552 dout(10) << "dirfrag " << dir
->dirfrag() << " " << *dir
<< dendl
;
2553 CDir
*oldparent
= get_projected_subtree_root(olddir
);
2554 dout(10) << " old parent " << oldparent
->dirfrag() << " " << *oldparent
<< dendl
;
2555 CDir
*newparent
= get_projected_subtree_root(newdir
);
2556 dout(10) << " new parent " << newparent
->dirfrag() << " " << *newparent
<< dendl
;
2558 if (oldparent
== newparent
) {
2559 dout(10) << "parent unchanged for " << dir
->dirfrag() << " at "
2560 << oldparent
->dirfrag() << dendl
;
2564 if (dir
->is_subtree_root()) {
2565 if (le
->subtrees
.count(newparent
->dirfrag()) &&
2566 oldparent
->get_dir_auth() != newparent
->get_dir_auth())
2567 dirs_to_add
[dir
->dirfrag()] = dir
;
2568 // children are fine. change parent.
2569 _move_subtree_map_bound(dir
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2574 if (oldparent
->get_dir_auth() != newparent
->get_dir_auth()) {
2575 dout(10) << " creating subtree for " << dir
->dirfrag() << dendl
;
2576 // if oldparent is auth, subtree is mine; include it.
2577 if (le
->subtrees
.count(oldparent
->dirfrag())) {
2578 dirs_to_add
[dir
->dirfrag()] = dir
;
2579 le
->subtrees
[dir
->dirfrag()].clear();
2581 // if newparent is auth, subtree is a new bound
2582 if (le
->subtrees
.count(newparent
->dirfrag())) {
2583 dirs_to_add
[dir
->dirfrag()] = dir
;
2584 le
->subtrees
[newparent
->dirfrag()].push_back(dir
->dirfrag()); // newparent is auth; new bound
2589 // see if any old bounds move to the new parent.
2590 for (set
<CDir
*>::iterator p
= subtrees
[oldparent
].begin();
2591 p
!= subtrees
[oldparent
].end();
2594 if (dir
->contains(bound
->get_parent_dir()))
2595 _move_subtree_map_bound(bound
->dirfrag(), oldparent
->dirfrag(), newparent
->dirfrag(),
2603 // simplify the journaled map. our in memory map may have more
2604 // subtrees than needed due to migrations that are just getting
2605 // started or just completing. but on replay, the "live" map will
2606 // be simple and we can do a straight comparison.
2607 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= le
->subtrees
.begin(); p
!= le
->subtrees
.end(); ++p
) {
2608 if (le
->ambiguous_subtrees
.count(p
->first
))
2611 while (i
< p
->second
.size()) {
2612 dirfrag_t b
= p
->second
[i
];
2613 if (le
->subtrees
.count(b
) &&
2614 le
->ambiguous_subtrees
.count(b
) == 0) {
2615 vector
<dirfrag_t
>& bb
= le
->subtrees
[b
];
2616 dout(10) << "simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2617 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2618 p
->second
.push_back(*r
);
2619 dirs_to_add
.erase(b
);
2620 le
->subtrees
.erase(b
);
2621 p
->second
.erase(p
->second
.begin() + i
);
2628 for (auto &p
: dirs_to_add
) {
2629 CDir
*dir
= p
.second
;
2630 le
->metablob
.add_dir_context(dir
, EMetaBlob::TO_ROOT
);
2631 le
->metablob
.add_dir(dir
, false);
2634 dout(15) << " subtrees " << le
->subtrees
<< dendl
;
2635 dout(15) << " ambiguous_subtrees " << le
->ambiguous_subtrees
<< dendl
;
2637 //le->metablob.print(cout);
2638 le
->expire_pos
= mds
->mdlog
->journaler
->get_expire_pos();
2642 void MDCache::dump_resolve_status(Formatter
*f
) const
2644 f
->open_object_section("resolve_status");
2645 f
->dump_stream("resolve_gather") << resolve_gather
;
2646 f
->dump_stream("resolve_ack_gather") << resolve_gather
;
2650 void MDCache::resolve_start(MDSInternalContext
*resolve_done_
)
2652 dout(10) << "resolve_start" << dendl
;
2653 assert(!resolve_done
);
2654 resolve_done
.reset(resolve_done_
);
2656 if (mds
->mdsmap
->get_root() != mds
->get_nodeid()) {
2657 // if we don't have the root dir, adjust it to UNKNOWN. during
2658 // resolve we want mds0 to explicit claim the portion of it that
2659 // it owns, so that anything beyond its bounds get left as
2661 CDir
*rootdir
= root
->get_dirfrag(frag_t());
2663 adjust_subtree_auth(rootdir
, CDIR_AUTH_UNKNOWN
);
2665 resolve_gather
= recovery_set
;
2668 void MDCache::send_resolves()
2670 send_slave_resolves();
2671 if (!resolve_ack_gather
.empty()) {
2672 dout(10) << "send_resolves still waiting for resolve ack from ("
2673 << resolve_ack_gather
<< ")" << dendl
;
2676 if (!need_resolve_rollback
.empty()) {
2677 dout(10) << "send_resolves still waiting for rollback to commit on ("
2678 << need_resolve_rollback
<< ")" << dendl
;
2681 send_subtree_resolves();
2684 void MDCache::send_slave_resolves()
2686 dout(10) << "send_slave_resolves" << dendl
;
2688 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2690 if (mds
->is_resolve()) {
2691 for (map
<mds_rank_t
, map
<metareqid_t
, MDSlaveUpdate
*> >::iterator p
= uncommitted_slave_updates
.begin();
2692 p
!= uncommitted_slave_updates
.end();
2694 resolves
[p
->first
] = new MMDSResolve
;
2695 for (map
<metareqid_t
, MDSlaveUpdate
*>::iterator q
= p
->second
.begin();
2696 q
!= p
->second
.end();
2698 dout(10) << " including uncommitted " << q
->first
<< dendl
;
2699 resolves
[p
->first
]->add_slave_request(q
->first
, false);
2703 set
<mds_rank_t
> resolve_set
;
2704 mds
->mdsmap
->get_mds_set(resolve_set
, MDSMap::STATE_RESOLVE
);
2705 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2706 p
!= active_requests
.end();
2708 MDRequestRef
& mdr
= p
->second
;
2709 if (!mdr
->is_slave())
2711 if (!mdr
->slave_did_prepare() && !mdr
->committing
) {
2714 mds_rank_t master
= mdr
->slave_to_mds
;
2715 if (resolve_set
.count(master
) || is_ambiguous_slave_update(p
->first
, master
)) {
2716 dout(10) << " including uncommitted " << *mdr
<< dendl
;
2717 if (!resolves
.count(master
))
2718 resolves
[master
] = new MMDSResolve
;
2719 if (!mdr
->committing
&&
2720 mdr
->has_more() && mdr
->more()->is_inode_exporter
) {
2721 // re-send cap exports
2722 CInode
*in
= mdr
->more()->rename_inode
;
2723 map
<client_t
, Capability::Export
> cap_map
;
2724 in
->export_client_caps(cap_map
);
2726 ::encode(in
->ino(), bl
);
2727 ::encode(cap_map
, bl
);
2728 resolves
[master
]->add_slave_request(p
->first
, bl
);
2730 resolves
[master
]->add_slave_request(p
->first
, mdr
->committing
);
2736 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2737 p
!= resolves
.end();
2739 dout(10) << "sending slave resolve to mds." << p
->first
<< dendl
;
2740 mds
->send_message_mds(p
->second
, p
->first
);
2741 resolve_ack_gather
.insert(p
->first
);
2745 void MDCache::send_subtree_resolves()
2747 dout(10) << "send_subtree_resolves" << dendl
;
2749 if (migrator
->is_exporting() || migrator
->is_importing()) {
2750 dout(7) << "send_subtree_resolves waiting, imports/exports still in progress" << dendl
;
2751 migrator
->show_importing();
2752 migrator
->show_exporting();
2753 resolves_pending
= true;
2757 map
<mds_rank_t
, MMDSResolve
*> resolves
;
2758 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
2759 p
!= recovery_set
.end();
2761 if (*p
== mds
->get_nodeid())
2763 if (mds
->is_resolve() || mds
->mdsmap
->is_resolve(*p
))
2764 resolves
[*p
] = new MMDSResolve
;
2767 map
<dirfrag_t
, vector
<dirfrag_t
> > my_subtrees
;
2768 map
<dirfrag_t
, vector
<dirfrag_t
> > my_ambig_imports
;
2771 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
2772 p
!= subtrees
.end();
2774 CDir
*dir
= p
->first
;
2776 // only our subtrees
2777 if (dir
->authority().first
!= mds
->get_nodeid())
2780 if (mds
->is_resolve() && my_ambiguous_imports
.count(dir
->dirfrag()))
2781 continue; // we'll add it below
2783 if (migrator
->is_ambiguous_import(dir
->dirfrag())) {
2784 // ambiguous (mid-import)
2786 get_subtree_bounds(dir
, bounds
);
2787 vector
<dirfrag_t
> dfls
;
2788 for (set
<CDir
*>::iterator q
= bounds
.begin(); q
!= bounds
.end(); ++q
)
2789 dfls
.push_back((*q
)->dirfrag());
2791 my_ambig_imports
[dir
->dirfrag()] = dfls
;
2792 dout(10) << " ambig " << dir
->dirfrag() << " " << dfls
<< dendl
;
2795 for (map
<mds_rank_t
, MMDSResolve
*>::iterator q
= resolves
.begin();
2796 q
!= resolves
.end();
2798 resolves
[q
->first
]->add_subtree(dir
->dirfrag());
2800 vector
<dirfrag_t
> dfls
;
2801 for (set
<CDir
*>::iterator q
= subtrees
[dir
].begin();
2802 q
!= subtrees
[dir
].end();
2805 dfls
.push_back(bound
->dirfrag());
2808 my_subtrees
[dir
->dirfrag()] = dfls
;
2809 dout(10) << " claim " << dir
->dirfrag() << " " << dfls
<< dendl
;
2814 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
2815 p
!= my_ambiguous_imports
.end();
2817 my_ambig_imports
[p
->first
] = p
->second
;
2818 dout(10) << " ambig " << p
->first
<< " " << p
->second
<< dendl
;
2821 // simplify the claimed subtree.
2822 for (auto p
= my_subtrees
.begin(); p
!= my_subtrees
.end(); ++p
) {
2824 while (i
< p
->second
.size()) {
2825 dirfrag_t b
= p
->second
[i
];
2826 if (my_subtrees
.count(b
)) {
2827 vector
<dirfrag_t
>& bb
= my_subtrees
[b
];
2828 dout(10) << " simplify: " << p
->first
<< " swallowing " << b
<< " with bounds " << bb
<< dendl
;
2829 for (vector
<dirfrag_t
>::iterator r
= bb
.begin(); r
!= bb
.end(); ++r
)
2830 p
->second
.push_back(*r
);
2831 my_subtrees
.erase(b
);
2832 p
->second
.erase(p
->second
.begin() + i
);
2840 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= resolves
.begin();
2841 p
!= resolves
.end();
2843 MMDSResolve
* m
= p
->second
;
2844 m
->subtrees
= my_subtrees
;
2845 m
->ambiguous_imports
= my_ambig_imports
;
2846 dout(10) << "sending subtee resolve to mds." << p
->first
<< dendl
;
2847 mds
->send_message_mds(m
, p
->first
);
2849 resolves_pending
= false;
2852 void MDCache::handle_mds_failure(mds_rank_t who
)
2854 dout(7) << "handle_mds_failure mds." << who
<< dendl
;
2856 dout(1) << "handle_mds_failure mds." << who
<< " : recovery peers are " << recovery_set
<< dendl
;
2858 resolve_gather
.insert(who
);
2859 discard_delayed_resolve(who
);
2860 ambiguous_slave_updates
.erase(who
);
2862 rejoin_gather
.insert(who
);
2863 rejoin_sent
.erase(who
); // i need to send another
2864 rejoin_ack_sent
.erase(who
); // i need to send another
2865 rejoin_ack_gather
.erase(who
); // i'll need/get another.
2867 dout(10) << " resolve_gather " << resolve_gather
<< dendl
;
2868 dout(10) << " resolve_ack_gather " << resolve_ack_gather
<< dendl
;
2869 dout(10) << " rejoin_sent " << rejoin_sent
<< dendl
;
2870 dout(10) << " rejoin_gather " << rejoin_gather
<< dendl
;
2871 dout(10) << " rejoin_ack_gather " << rejoin_ack_gather
<< dendl
;
2874 // tell the migrator too.
2875 migrator
->handle_mds_failure_or_stop(who
);
2877 // tell the balancer too.
2878 mds
->balancer
->handle_mds_failure(who
);
2880 // clean up any requests slave to/from this node
2881 list
<MDRequestRef
> finish
;
2882 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
2883 p
!= active_requests
.end();
2885 MDRequestRef
& mdr
= p
->second
;
2886 // slave to the failed node?
2887 if (mdr
->slave_to_mds
== who
) {
2888 if (mdr
->slave_did_prepare()) {
2889 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2890 if (is_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
))
2891 remove_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2893 if (!mdr
->more()->waiting_on_slave
.empty()) {
2894 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2895 // will rollback, no need to wait
2896 if (mdr
->slave_request
) {
2897 mdr
->slave_request
->put();
2898 mdr
->slave_request
= 0;
2900 mdr
->more()->waiting_on_slave
.clear();
2902 } else if (!mdr
->committing
) {
2903 dout(10) << " slave request " << *mdr
<< " has no prepare, finishing up" << dendl
;
2904 if (mdr
->slave_request
|| mdr
->slave_rolling_back())
2905 mdr
->aborted
= true;
2907 finish
.push_back(mdr
);
2911 if (mdr
->is_slave() && mdr
->slave_did_prepare()) {
2912 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2913 assert(mdr
->more()->srcdn_auth_mds
== mds
->get_nodeid());
2914 dout(10) << " slave request " << *mdr
<< " no longer need rename notity ack from mds."
2916 mdr
->more()->waiting_on_slave
.erase(who
);
2917 if (mdr
->more()->waiting_on_slave
.empty() && mdr
->slave_request
)
2918 mds
->queue_waiter(new C_MDS_RetryRequest(this, mdr
));
2921 if (mdr
->more()->srcdn_auth_mds
== who
&&
2922 mds
->mdsmap
->is_clientreplay_or_active_or_stopping(mdr
->slave_to_mds
)) {
2923 // rename srcdn's auth mds failed, resolve even I'm a survivor.
2924 dout(10) << " slave request " << *mdr
<< " uncommitted, will resolve shortly" << dendl
;
2925 add_ambiguous_slave_update(p
->first
, mdr
->slave_to_mds
);
2927 } else if (mdr
->slave_request
) {
2928 MMDSSlaveRequest
*slave_req
= mdr
->slave_request
;
2929 // FIXME: Slave rename request can arrive after we notice mds failure.
2930 // This can cause mds to crash (does not affect integrity of FS).
2931 if (slave_req
->get_op() == MMDSSlaveRequest::OP_RENAMEPREP
&&
2932 slave_req
->srcdn_auth
== who
)
2933 slave_req
->mark_interrupted();
2936 // failed node is slave?
2937 if (mdr
->is_master() && !mdr
->committing
) {
2938 if (mdr
->more()->srcdn_auth_mds
== who
) {
2939 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2940 << who
<< " to recover" << dendl
;
2941 assert(mdr
->more()->witnessed
.count(who
) == 0);
2942 if (mdr
->more()->is_ambiguous_auth
)
2943 mdr
->clear_ambiguous_auth();
2944 // rename srcdn's auth mds failed, all witnesses will rollback
2945 mdr
->more()->witnessed
.clear();
2946 pending_masters
.erase(p
->first
);
2949 if (mdr
->more()->witnessed
.count(who
)) {
2950 mds_rank_t srcdn_auth
= mdr
->more()->srcdn_auth_mds
;
2951 if (srcdn_auth
>= 0 && mdr
->more()->waiting_on_slave
.count(srcdn_auth
)) {
2952 dout(10) << " master request " << *mdr
<< " waiting for rename srcdn's auth mds."
2953 << mdr
->more()->srcdn_auth_mds
<< " to reply" << dendl
;
2954 // waiting for the slave (rename srcdn's auth mds), delay sending resolve ack
2955 // until either the request is committing or the slave also fails.
2956 assert(mdr
->more()->waiting_on_slave
.size() == 1);
2957 pending_masters
.insert(p
->first
);
2959 dout(10) << " master request " << *mdr
<< " no longer witnessed by slave mds."
2960 << who
<< " to recover" << dendl
;
2961 if (srcdn_auth
>= 0)
2962 assert(mdr
->more()->witnessed
.count(srcdn_auth
) == 0);
2964 // discard this peer's prepare (if any)
2965 mdr
->more()->witnessed
.erase(who
);
2969 if (mdr
->more()->waiting_on_slave
.count(who
)) {
2970 dout(10) << " master request " << *mdr
<< " waiting for slave mds." << who
2971 << " to recover" << dendl
;
2972 // retry request when peer recovers
2973 mdr
->more()->waiting_on_slave
.erase(who
);
2974 if (mdr
->more()->waiting_on_slave
.empty())
2975 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(this, mdr
));
2978 if (mdr
->locking
&& mdr
->locking_target_mds
== who
)
2979 mdr
->finish_locking(mdr
->locking
);
2983 for (map
<metareqid_t
, umaster
>::iterator p
= uncommitted_masters
.begin();
2984 p
!= uncommitted_masters
.end();
2986 // The failed MDS may have already committed the slave update
2987 if (p
->second
.slaves
.count(who
)) {
2988 p
->second
.recovering
= true;
2989 p
->second
.slaves
.erase(who
);
2993 while (!finish
.empty()) {
2994 dout(10) << "cleaning up slave request " << *finish
.front() << dendl
;
2995 request_finish(finish
.front());
2999 kick_find_ino_peers(who
);
3000 kick_open_ino_peers(who
);
3002 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
3003 p
!= fragments
.end(); ) {
3004 dirfrag_t df
= p
->first
;
3005 fragment_info_t
& info
= p
->second
;
3007 if (info
.is_fragmenting())
3009 dout(10) << "cancelling fragment " << df
<< " bit " << info
.bits
<< dendl
;
3011 info
.dirs
.swap(dirs
);
3012 fragments
.erase(df
);
3013 fragment_unmark_unfreeze_dirs(dirs
);
3016 // MDCache::shutdown_export_strays() always exports strays to mds.0
3017 if (who
== mds_rank_t(0))
3018 shutdown_exported_strays
.clear();
3024 * handle_mds_recovery - called on another node's transition
3025 * from resolve -> active.
3027 void MDCache::handle_mds_recovery(mds_rank_t who
)
3029 dout(7) << "handle_mds_recovery mds." << who
<< dendl
;
3031 // exclude all discover waiters. kick_discovers() will do the job
3032 static const uint64_t i_mask
= CInode::WAIT_ANY_MASK
& ~CInode::WAIT_DIR
;
3033 static const uint64_t d_mask
= CDir::WAIT_ANY_MASK
& ~CDir::WAIT_DENTRY
;
3035 list
<MDSInternalContextBase
*> waiters
;
3037 // wake up any waiters in their subtrees
3038 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3039 p
!= subtrees
.end();
3041 CDir
*dir
= p
->first
;
3043 if (dir
->authority().first
!= who
||
3044 dir
->authority().second
== mds
->get_nodeid())
3046 assert(!dir
->is_auth());
3052 while (!q
.empty()) {
3053 CDir
*d
= q
.front();
3055 d
->take_waiting(d_mask
, waiters
);
3057 // inode waiters too
3058 for (auto &p
: d
->items
) {
3059 CDentry
*dn
= p
.second
;
3060 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3061 if (dnl
->is_primary()) {
3062 dnl
->get_inode()->take_waiting(i_mask
, waiters
);
3066 dnl
->get_inode()->get_dirfrags(ls
);
3067 for (list
<CDir
*>::iterator p
= ls
.begin();
3071 if (!subdir
->is_subtree_root())
3072 q
.push_back(subdir
);
3079 kick_open_ino_peers(who
);
3080 kick_find_ino_peers(who
);
3083 mds
->queue_waiters(waiters
);
3086 void MDCache::set_recovery_set(set
<mds_rank_t
>& s
)
3088 dout(7) << "set_recovery_set " << s
<< dendl
;
3094 * during resolve state, we share resolves to determine who
3095 * is authoritative for which trees. we expect to get an resolve
3096 * from _everyone_ in the recovery_set (the mds cluster at the time of
3097 * the first failure).
3099 * This functions puts the passed message before returning
3101 void MDCache::handle_resolve(MMDSResolve
*m
)
3103 dout(7) << "handle_resolve from " << m
->get_source() << dendl
;
3104 mds_rank_t from
= mds_rank_t(m
->get_source().num());
3106 if (mds
->get_state() < MDSMap::STATE_RESOLVE
) {
3107 if (mds
->get_want_state() == CEPH_MDS_STATE_RESOLVE
) {
3108 mds
->wait_for_resolve(new C_MDS_RetryMessage(mds
, m
));
3111 // wait until we reach the resolve stage!
3116 discard_delayed_resolve(from
);
3118 // ambiguous slave requests?
3119 if (!m
->slave_requests
.empty()) {
3120 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3121 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3122 if (uncommitted_masters
.count(p
->first
) && !uncommitted_masters
[p
->first
].safe
) {
3123 assert(!p
->second
.committing
);
3124 pending_masters
.insert(p
->first
);
3128 if (!pending_masters
.empty()) {
3129 dout(10) << " still have pending updates, delay processing slave resolve" << dendl
;
3130 delayed_resolve
[from
] = m
;
3135 MMDSResolveAck
*ack
= new MMDSResolveAck
;
3136 for (auto p
= m
->slave_requests
.begin(); p
!= m
->slave_requests
.end(); ++p
) {
3137 if (uncommitted_masters
.count(p
->first
)) { //mds->sessionmap.have_completed_request(p->first)) {
3139 if (p
->second
.committing
) {
3140 // already committing, waiting for the OP_COMMITTED slave reply
3141 dout(10) << " already committing slave request " << *p
<< " noop "<< dendl
;
3143 dout(10) << " ambiguous slave request " << *p
<< " will COMMIT" << dendl
;
3144 ack
->add_commit(p
->first
);
3146 uncommitted_masters
[p
->first
].slaves
.insert(from
); // wait for slave OP_COMMITTED before we log ECommitted
3148 if (p
->second
.inode_caps
.length() > 0) {
3149 // slave wants to export caps (rename)
3150 assert(mds
->is_resolve());
3153 map
<client_t
,Capability::Export
> cap_exports
;
3154 bufferlist::iterator q
= p
->second
.inode_caps
.begin();
3156 ::decode(cap_exports
, q
);
3158 assert(get_inode(ino
));
3160 for (map
<client_t
,Capability::Export
>::iterator q
= cap_exports
.begin();
3161 q
!= cap_exports
.end();
3163 Capability::Import
& im
= rejoin_imported_caps
[from
][ino
][q
->first
];
3164 im
.cap_id
= ++last_cap_id
; // assign a new cap ID
3166 im
.mseq
= q
->second
.mseq
;
3169 // will process these caps in rejoin stage
3170 rejoin_slave_exports
[ino
].first
= from
;
3171 rejoin_slave_exports
[ino
].second
.swap(cap_exports
);
3173 // send information of imported caps back to slave
3174 ::encode(rejoin_imported_caps
[from
][ino
], ack
->commit
[p
->first
]);
3178 dout(10) << " ambiguous slave request " << *p
<< " will ABORT" << dendl
;
3179 assert(!p
->second
.committing
);
3180 ack
->add_abort(p
->first
);
3183 mds
->send_message(ack
, m
->get_connection());
3188 if (!resolve_ack_gather
.empty() || !need_resolve_rollback
.empty()) {
3189 dout(10) << "delay processing subtree resolve" << dendl
;
3190 delayed_resolve
[from
] = m
;
3194 bool survivor
= false;
3195 // am i a surviving ambiguous importer?
3196 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
3198 // check for any import success/failure (from this node)
3199 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator p
= my_ambiguous_imports
.begin();
3200 while (p
!= my_ambiguous_imports
.end()) {
3201 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator next
= p
;
3203 CDir
*dir
= get_dirfrag(p
->first
);
3205 dout(10) << "checking ambiguous import " << *dir
<< dendl
;
3206 if (migrator
->is_importing(dir
->dirfrag()) &&
3207 migrator
->get_import_peer(dir
->dirfrag()) == from
) {
3208 assert(migrator
->get_import_state(dir
->dirfrag()) == Migrator::IMPORT_ACKING
);
3210 // check if sender claims the subtree
3211 bool claimed_by_sender
= false;
3212 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= m
->subtrees
.begin();
3213 q
!= m
->subtrees
.end();
3215 // an ambiguous import won't race with a refragmentation; it's appropriate to force here.
3216 CDir
*base
= get_force_dirfrag(q
->first
, false);
3217 if (!base
|| !base
->contains(dir
))
3218 continue; // base not dir or an ancestor of dir, clearly doesn't claim dir.
3222 get_force_dirfrag_bound_set(q
->second
, bounds
);
3223 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
3225 if (bound
->contains(dir
)) {
3226 inside
= false; // nope, bound is dir or parent of dir, not inside.
3231 claimed_by_sender
= true;
3234 my_ambiguous_imports
.erase(p
); // no longer ambiguous.
3235 if (claimed_by_sender
) {
3236 dout(7) << "ambiguous import failed on " << *dir
<< dendl
;
3237 migrator
->import_reverse(dir
);
3239 dout(7) << "ambiguous import succeeded on " << *dir
<< dendl
;
3240 migrator
->import_finish(dir
, true);
3247 // update my dir_auth values
3248 // need to do this on recoverying nodes _and_ bystanders (to resolve ambiguous
3249 // migrations between other nodes)
3250 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->subtrees
.begin();
3251 pi
!= m
->subtrees
.end();
3253 dout(10) << "peer claims " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3254 CDir
*dir
= get_force_dirfrag(pi
->first
, !survivor
);
3257 adjust_bounded_subtree_auth(dir
, pi
->second
, from
);
3258 try_subtree_merge(dir
);
3263 // note ambiguous imports too
3264 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator pi
= m
->ambiguous_imports
.begin();
3265 pi
!= m
->ambiguous_imports
.end();
3267 dout(10) << "noting ambiguous import on " << pi
->first
<< " bounds " << pi
->second
<< dendl
;
3268 other_ambiguous_imports
[from
][pi
->first
].swap( pi
->second
);
3271 // did i get them all?
3272 resolve_gather
.erase(from
);
3274 maybe_resolve_finish();
3279 void MDCache::process_delayed_resolve()
3281 dout(10) << "process_delayed_resolve" << dendl
;
3282 map
<mds_rank_t
, MMDSResolve
*> tmp
;
3283 tmp
.swap(delayed_resolve
);
3284 for (map
<mds_rank_t
, MMDSResolve
*>::iterator p
= tmp
.begin(); p
!= tmp
.end(); ++p
)
3285 handle_resolve(p
->second
);
3288 void MDCache::discard_delayed_resolve(mds_rank_t who
)
3290 if (delayed_resolve
.count(who
)) {
3291 delayed_resolve
[who
]->put();
3292 delayed_resolve
.erase(who
);
3296 void MDCache::maybe_resolve_finish()
3298 assert(resolve_ack_gather
.empty());
3299 assert(need_resolve_rollback
.empty());
3301 if (!resolve_gather
.empty()) {
3302 dout(10) << "maybe_resolve_finish still waiting for resolves ("
3303 << resolve_gather
<< ")" << dendl
;
3307 dout(10) << "maybe_resolve_finish got all resolves+resolve_acks, done." << dendl
;
3308 disambiguate_my_imports();
3309 finish_committed_masters();
3312 assert(mds
->is_resolve());
3313 trim_unlinked_inodes();
3314 recalc_auth_bits(false);
3315 resolve_done
.release()->complete(0);
3317 maybe_send_pending_rejoins();
3321 /* This functions puts the passed message before returning */
3322 void MDCache::handle_resolve_ack(MMDSResolveAck
*ack
)
3324 dout(10) << "handle_resolve_ack " << *ack
<< " from " << ack
->get_source() << dendl
;
3325 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
3327 if (!resolve_ack_gather
.count(from
) ||
3328 mds
->mdsmap
->get_state(from
) < MDSMap::STATE_RESOLVE
) {
3333 if (ambiguous_slave_updates
.count(from
)) {
3334 assert(mds
->mdsmap
->is_clientreplay_or_active_or_stopping(from
));
3335 assert(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3338 for (map
<metareqid_t
, bufferlist
>::iterator p
= ack
->commit
.begin();
3339 p
!= ack
->commit
.end();
3341 dout(10) << " commit on slave " << p
->first
<< dendl
;
3343 if (ambiguous_slave_updates
.count(from
)) {
3344 remove_ambiguous_slave_update(p
->first
, from
);
3348 if (mds
->is_resolve()) {
3350 MDSlaveUpdate
*su
= get_uncommitted_slave_update(p
->first
, from
);
3354 mds
->mdlog
->start_submit_entry(new ESlaveUpdate(mds
->mdlog
, "unknown", p
->first
, from
,
3355 ESlaveUpdate::OP_COMMIT
, su
->origop
),
3356 new C_MDC_SlaveCommit(this, from
, p
->first
));
3357 mds
->mdlog
->flush();
3359 finish_uncommitted_slave_update(p
->first
, from
);
3361 MDRequestRef mdr
= request_get(p
->first
);
3362 // information about master imported caps
3363 if (p
->second
.length() > 0)
3364 mdr
->more()->inode_import
.claim(p
->second
);
3366 assert(mdr
->slave_request
== 0); // shouldn't be doing anything!
3367 request_finish(mdr
);
3371 for (vector
<metareqid_t
>::iterator p
= ack
->abort
.begin();
3372 p
!= ack
->abort
.end();
3374 dout(10) << " abort on slave " << *p
<< dendl
;
3376 if (mds
->is_resolve()) {
3377 MDSlaveUpdate
*su
= get_uncommitted_slave_update(*p
, from
);
3380 // perform rollback (and journal a rollback entry)
3381 // note: this will hold up the resolve a bit, until the rollback entries journal.
3382 MDRequestRef null_ref
;
3383 switch (su
->origop
) {
3384 case ESlaveUpdate::LINK
:
3385 mds
->server
->do_link_rollback(su
->rollback
, from
, null_ref
);
3387 case ESlaveUpdate::RENAME
:
3388 mds
->server
->do_rename_rollback(su
->rollback
, from
, null_ref
);
3390 case ESlaveUpdate::RMDIR
:
3391 mds
->server
->do_rmdir_rollback(su
->rollback
, from
, null_ref
);
3397 MDRequestRef mdr
= request_get(*p
);
3398 mdr
->aborted
= true;
3399 if (mdr
->slave_request
) {
3400 if (mdr
->slave_did_prepare()) // journaling slave prepare ?
3401 add_rollback(*p
, from
);
3403 request_finish(mdr
);
3408 if (!ambiguous_slave_updates
.count(from
))
3409 resolve_ack_gather
.erase(from
);
3410 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3411 send_subtree_resolves();
3412 process_delayed_resolve();
3418 void MDCache::add_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
, MDSlaveUpdate
*su
)
3420 assert(uncommitted_slave_updates
[master
].count(reqid
) == 0);
3421 uncommitted_slave_updates
[master
][reqid
] = su
;
3422 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
)
3423 uncommitted_slave_rename_olddir
[*p
]++;
3424 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
)
3425 uncommitted_slave_unlink
[*p
]++;
3428 void MDCache::finish_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3430 assert(uncommitted_slave_updates
[master
].count(reqid
));
3431 MDSlaveUpdate
* su
= uncommitted_slave_updates
[master
][reqid
];
3433 uncommitted_slave_updates
[master
].erase(reqid
);
3434 if (uncommitted_slave_updates
[master
].empty())
3435 uncommitted_slave_updates
.erase(master
);
3436 // discard the non-auth subtree we renamed out of
3437 for(set
<CInode
*>::iterator p
= su
->olddirs
.begin(); p
!= su
->olddirs
.end(); ++p
) {
3439 map
<CInode
*, int>::iterator it
= uncommitted_slave_rename_olddir
.find(diri
);
3440 assert(it
!= uncommitted_slave_rename_olddir
.end());
3442 if (it
->second
== 0) {
3443 uncommitted_slave_rename_olddir
.erase(it
);
3445 diri
->get_dirfrags(ls
);
3446 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
3447 CDir
*root
= get_subtree_root(*q
);
3448 if (root
->get_dir_auth() == CDIR_AUTH_UNDEF
) {
3449 try_trim_non_auth_subtree(root
);
3455 assert(it
->second
> 0);
3457 // removed the inodes that were unlinked by slave update
3458 for(set
<CInode
*>::iterator p
= su
->unlinked
.begin(); p
!= su
->unlinked
.end(); ++p
) {
3460 map
<CInode
*, int>::iterator it
= uncommitted_slave_unlink
.find(in
);
3461 assert(it
!= uncommitted_slave_unlink
.end());
3463 if (it
->second
== 0) {
3464 uncommitted_slave_unlink
.erase(it
);
3465 if (!in
->get_projected_parent_dn())
3466 mds
->mdcache
->remove_inode_recursive(in
);
3468 assert(it
->second
> 0);
3473 MDSlaveUpdate
* MDCache::get_uncommitted_slave_update(metareqid_t reqid
, mds_rank_t master
)
3476 MDSlaveUpdate
* su
= NULL
;
3477 if (uncommitted_slave_updates
.count(master
) &&
3478 uncommitted_slave_updates
[master
].count(reqid
)) {
3479 su
= uncommitted_slave_updates
[master
][reqid
];
3485 void MDCache::finish_rollback(metareqid_t reqid
) {
3486 assert(need_resolve_rollback
.count(reqid
));
3487 if (mds
->is_resolve())
3488 finish_uncommitted_slave_update(reqid
, need_resolve_rollback
[reqid
]);
3489 need_resolve_rollback
.erase(reqid
);
3490 if (resolve_ack_gather
.empty() && need_resolve_rollback
.empty()) {
3491 send_subtree_resolves();
3492 process_delayed_resolve();
3496 void MDCache::disambiguate_other_imports()
3498 dout(10) << "disambiguate_other_imports" << dendl
;
3500 bool recovering
= !(mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping());
3501 // other nodes' ambiguous imports
3502 for (map
<mds_rank_t
, map
<dirfrag_t
, vector
<dirfrag_t
> > >::iterator p
= other_ambiguous_imports
.begin();
3503 p
!= other_ambiguous_imports
.end();
3505 mds_rank_t who
= p
->first
;
3506 dout(10) << "ambiguous imports for mds." << who
<< dendl
;
3508 for (map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= p
->second
.begin();
3509 q
!= p
->second
.end();
3511 dout(10) << " ambiguous import " << q
->first
<< " bounds " << q
->second
<< dendl
;
3512 // an ambiguous import will not race with a refragmentation; it's appropriate to force here.
3513 CDir
*dir
= get_force_dirfrag(q
->first
, recovering
);
3516 if (dir
->is_ambiguous_auth() || // works for me_ambig or if i am a surviving bystander
3517 dir
->authority() == CDIR_AUTH_UNDEF
) { // resolving
3518 dout(10) << " mds." << who
<< " did import " << *dir
<< dendl
;
3519 adjust_bounded_subtree_auth(dir
, q
->second
, who
);
3520 try_subtree_merge(dir
);
3522 dout(10) << " mds." << who
<< " did not import " << *dir
<< dendl
;
3526 other_ambiguous_imports
.clear();
3529 void MDCache::disambiguate_my_imports()
3531 dout(10) << "disambiguate_my_imports" << dendl
;
3533 if (!mds
->is_resolve()) {
3534 assert(my_ambiguous_imports
.empty());
3538 disambiguate_other_imports();
3540 // my ambiguous imports
3541 mds_authority_t
me_ambig(mds
->get_nodeid(), mds
->get_nodeid());
3542 while (!my_ambiguous_imports
.empty()) {
3543 map
<dirfrag_t
, vector
<dirfrag_t
> >::iterator q
= my_ambiguous_imports
.begin();
3545 CDir
*dir
= get_dirfrag(q
->first
);
3548 if (dir
->authority() != me_ambig
) {
3549 dout(10) << "ambiguous import auth known, must not be me " << *dir
<< dendl
;
3550 cancel_ambiguous_import(dir
);
3552 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, false));
3554 // subtree may have been swallowed by another node claiming dir
3556 CDir
*root
= get_subtree_root(dir
);
3558 dout(10) << " subtree root is " << *root
<< dendl
;
3559 assert(root
->dir_auth
.first
!= mds
->get_nodeid()); // no us!
3560 try_trim_non_auth_subtree(root
);
3562 dout(10) << "ambiguous import auth unclaimed, must be me " << *dir
<< dendl
;
3563 finish_ambiguous_import(q
->first
);
3564 mds
->mdlog
->start_submit_entry(new EImportFinish(dir
, true));
3567 assert(my_ambiguous_imports
.empty());
3568 mds
->mdlog
->flush();
3570 // verify all my subtrees are unambiguous!
3571 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3572 p
!= subtrees
.end();
3574 CDir
*dir
= p
->first
;
3575 if (dir
->is_ambiguous_dir_auth()) {
3576 dout(0) << "disambiguate_imports uh oh, dir_auth is still ambiguous for " << *dir
<< dendl
;
3578 assert(!dir
->is_ambiguous_dir_auth());
3585 void MDCache::add_ambiguous_import(dirfrag_t base
, const vector
<dirfrag_t
>& bounds
)
3587 assert(my_ambiguous_imports
.count(base
) == 0);
3588 my_ambiguous_imports
[base
] = bounds
;
3592 void MDCache::add_ambiguous_import(CDir
*base
, const set
<CDir
*>& bounds
)
3595 vector
<dirfrag_t
> binos
;
3596 for (set
<CDir
*>::iterator p
= bounds
.begin();
3599 binos
.push_back((*p
)->dirfrag());
3601 // note: this can get called twice if the exporter fails during recovery
3602 if (my_ambiguous_imports
.count(base
->dirfrag()))
3603 my_ambiguous_imports
.erase(base
->dirfrag());
3605 add_ambiguous_import(base
->dirfrag(), binos
);
3608 void MDCache::cancel_ambiguous_import(CDir
*dir
)
3610 dirfrag_t df
= dir
->dirfrag();
3611 assert(my_ambiguous_imports
.count(df
));
3612 dout(10) << "cancel_ambiguous_import " << df
3613 << " bounds " << my_ambiguous_imports
[df
]
3616 my_ambiguous_imports
.erase(df
);
3619 void MDCache::finish_ambiguous_import(dirfrag_t df
)
3621 assert(my_ambiguous_imports
.count(df
));
3622 vector
<dirfrag_t
> bounds
;
3623 bounds
.swap(my_ambiguous_imports
[df
]);
3624 my_ambiguous_imports
.erase(df
);
3626 dout(10) << "finish_ambiguous_import " << df
3627 << " bounds " << bounds
3629 CDir
*dir
= get_dirfrag(df
);
3632 // adjust dir_auth, import maps
3633 adjust_bounded_subtree_auth(dir
, bounds
, mds
->get_nodeid());
3634 try_subtree_merge(dir
);
3637 void MDCache::remove_inode_recursive(CInode
*in
)
3639 dout(10) << "remove_inode_recursive " << *in
<< dendl
;
3641 in
->get_dirfrags(ls
);
3642 list
<CDir
*>::iterator p
= ls
.begin();
3643 while (p
!= ls
.end()) {
3644 CDir
*subdir
= *p
++;
3646 dout(10) << " removing dirfrag " << subdir
<< dendl
;
3647 auto it
= subdir
->items
.begin();
3648 while (it
!= subdir
->items
.end()) {
3649 CDentry
*dn
= it
->second
;
3651 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3652 if (dnl
->is_primary()) {
3653 CInode
*tin
= dnl
->get_inode();
3654 subdir
->unlink_inode(dn
, false);
3655 remove_inode_recursive(tin
);
3657 subdir
->remove_dentry(dn
);
3660 if (subdir
->is_subtree_root())
3661 remove_subtree(subdir
);
3662 in
->close_dirfrag(subdir
->dirfrag().frag
);
3667 bool MDCache::expire_recursive(
3669 map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
3671 assert(!in
->is_auth());
3673 dout(10) << __func__
<< ":" << *in
<< dendl
;
3675 // Recurse into any dirfrags beneath this inode
3677 in
->get_dirfrags(ls
);
3678 for (auto subdir
: ls
) {
3679 if (!in
->is_mdsdir() && subdir
->is_subtree_root()) {
3680 dout(10) << __func__
<< ": stray still has subtree " << *in
<< dendl
;
3684 for (auto &it
: subdir
->items
) {
3685 CDentry
*dn
= it
.second
;
3686 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3687 if (dnl
->is_primary()) {
3688 CInode
*tin
= dnl
->get_inode();
3690 /* Remote strays with linkage (i.e. hardlinks) should not be
3691 * expired, because they may be the target of
3692 * a rename() as the owning MDS shuts down */
3693 if (!tin
->is_stray() && tin
->inode
.nlink
) {
3694 dout(10) << __func__
<< ": stray still has linkage " << *tin
<< dendl
;
3698 const bool abort
= expire_recursive(tin
, expiremap
);
3703 if (dn
->lru_is_expireable()) {
3704 trim_dentry(dn
, expiremap
);
3706 dout(10) << __func__
<< ": stray dn is not expireable " << *dn
<< dendl
;
3715 void MDCache::trim_unlinked_inodes()
3717 dout(7) << "trim_unlinked_inodes" << dendl
;
3719 for (auto &p
: inode_map
) {
3720 CInode
*in
= p
.second
;
3721 if (in
->get_parent_dn() == NULL
&& !in
->is_base()) {
3722 dout(7) << " will trim from " << *in
<< dendl
;
3726 for (list
<CInode
*>::iterator p
= q
.begin(); p
!= q
.end(); ++p
)
3727 remove_inode_recursive(*p
);
3730 /** recalc_auth_bits()
3731 * once subtree auth is disambiguated, we need to adjust all the
3732 * auth and dirty bits in our cache before moving on.
3734 void MDCache::recalc_auth_bits(bool replay
)
3736 dout(7) << "recalc_auth_bits " << (replay
? "(replay)" : "") << dendl
;
3739 root
->inode_auth
.first
= mds
->mdsmap
->get_root();
3740 bool auth
= mds
->get_nodeid() == root
->inode_auth
.first
;
3742 root
->state_set(CInode::STATE_AUTH
);
3744 root
->state_clear(CInode::STATE_AUTH
);
3746 root
->state_set(CInode::STATE_REJOINING
);
3750 set
<CInode
*> subtree_inodes
;
3751 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3752 p
!= subtrees
.end();
3754 if (p
->first
->dir_auth
.first
== mds
->get_nodeid())
3755 subtree_inodes
.insert(p
->first
->inode
);
3758 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
3759 p
!= subtrees
.end();
3761 if (p
->first
->inode
->is_mdsdir()) {
3762 CInode
*in
= p
->first
->inode
;
3763 bool auth
= in
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid());
3765 in
->state_set(CInode::STATE_AUTH
);
3767 in
->state_clear(CInode::STATE_AUTH
);
3769 in
->state_set(CInode::STATE_REJOINING
);
3773 list
<CDir
*> dfq
; // dirfrag queue
3774 dfq
.push_back(p
->first
);
3776 bool auth
= p
->first
->authority().first
== mds
->get_nodeid();
3777 dout(10) << " subtree auth=" << auth
<< " for " << *p
->first
<< dendl
;
3779 while (!dfq
.empty()) {
3780 CDir
*dir
= dfq
.front();
3785 dir
->state_set(CDir::STATE_AUTH
);
3787 dir
->state_clear(CDir::STATE_AUTH
);
3789 // close empty non-auth dirfrag
3790 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0) {
3791 dir
->inode
->close_dirfrag(dir
->get_frag());
3794 dir
->state_set(CDir::STATE_REJOINING
);
3795 dir
->state_clear(CDir::STATE_COMPLETE
);
3796 if (dir
->is_dirty())
3801 // dentries in this dir
3802 for (auto &p
: dir
->items
) {
3804 CDentry
*dn
= p
.second
;
3805 CDentry::linkage_t
*dnl
= dn
->get_linkage();
3807 dn
->state_set(CDentry::STATE_AUTH
);
3809 dn
->state_clear(CDentry::STATE_AUTH
);
3811 dn
->state_set(CDentry::STATE_REJOINING
);
3817 if (dnl
->is_primary()) {
3819 CInode
*in
= dnl
->get_inode();
3821 in
->state_set(CInode::STATE_AUTH
);
3823 in
->state_clear(CInode::STATE_AUTH
);
3825 in
->state_set(CInode::STATE_REJOINING
);
3828 if (in
->is_dirty_parent())
3829 in
->clear_dirty_parent();
3830 // avoid touching scatterlocks for our subtree roots!
3831 if (subtree_inodes
.count(in
) == 0)
3832 in
->clear_scatter_dirty();
3837 in
->get_nested_dirfrags(dfq
);
3849 // ===========================================================================
3853 * notes on scatterlock recovery:
3855 * - recovering inode replica sends scatterlock data for any subtree
3856 * roots (the only ones that are possibly dirty).
3858 * - surviving auth incorporates any provided scatterlock data. any
3859 * pending gathers are then finished, as with the other lock types.
3861 * that takes care of surviving auth + (recovering replica)*.
3863 * - surviving replica sends strong_inode, which includes current
3864 * scatterlock state, AND any dirty scatterlock data. this
3865 * provides the recovering auth with everything it might need.
3867 * - recovering auth must pick initial scatterlock state based on
3868 * (weak|strong) rejoins.
3869 * - always assimilate scatterlock data (it can't hurt)
3870 * - any surviving replica in SCATTER state -> SCATTER. otherwise, SYNC.
3871 * - include base inode in ack for all inodes that saw scatterlock content
3873 * also, for scatter gather,
3875 * - auth increments {frag,r}stat.version on completion of any gather.
3877 * - auth incorporates changes in a gather _only_ if the version
3880 * - replica discards changes any time the scatterlock syncs, and
3884 void MDCache::dump_rejoin_status(Formatter
*f
) const
3886 f
->open_object_section("rejoin_status");
3887 f
->dump_stream("rejoin_gather") << rejoin_gather
;
3888 f
->dump_stream("rejoin_ack_gather") << rejoin_ack_gather
;
3889 f
->dump_unsigned("num_opening_inodes", cap_imports_num_opening
);
3893 void MDCache::rejoin_start(MDSInternalContext
*rejoin_done_
)
3895 dout(10) << "rejoin_start" << dendl
;
3896 assert(!rejoin_done
);
3897 rejoin_done
.reset(rejoin_done_
);
3899 rejoin_gather
= recovery_set
;
3900 // need finish opening cap inodes before sending cache rejoins
3901 rejoin_gather
.insert(mds
->get_nodeid());
3902 process_imported_caps();
3908 * this initiates rejoin. it shoudl be called before we get any
3909 * rejoin or rejoin_ack messages (or else mdsmap distribution is broken).
3911 * we start out by sending rejoins to everyone in the recovery set.
3913 * if we are rejoin, send for all regions in our cache.
3914 * if we are active|stopping, send only to nodes that are are rejoining.
3916 void MDCache::rejoin_send_rejoins()
3918 dout(10) << "rejoin_send_rejoins with recovery_set " << recovery_set
<< dendl
;
3920 if (rejoin_gather
.count(mds
->get_nodeid())) {
3921 dout(7) << "rejoin_send_rejoins still processing imported caps, delaying" << dendl
;
3922 rejoins_pending
= true;
3925 if (!resolve_gather
.empty()) {
3926 dout(7) << "rejoin_send_rejoins still waiting for resolves ("
3927 << resolve_gather
<< ")" << dendl
;
3928 rejoins_pending
= true;
3932 assert(!migrator
->is_importing());
3933 assert(!migrator
->is_exporting());
3935 if (!mds
->is_rejoin()) {
3936 disambiguate_other_imports();
3939 map
<mds_rank_t
, MMDSCacheRejoin
*> rejoins
;
3942 // if i am rejoining, send a rejoin to everyone.
3943 // otherwise, just send to others who are rejoining.
3944 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
3945 p
!= recovery_set
.end();
3947 if (*p
== mds
->get_nodeid()) continue; // nothing to myself!
3948 if (rejoin_sent
.count(*p
)) continue; // already sent a rejoin to this node!
3949 if (mds
->is_rejoin())
3950 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_WEAK
);
3951 else if (mds
->mdsmap
->is_rejoin(*p
))
3952 rejoins
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_STRONG
);
3955 if (mds
->is_rejoin()) {
3956 map
<client_t
, set
<mds_rank_t
> > client_exports
;
3957 for (auto p
= cap_exports
.begin(); p
!= cap_exports
.end(); ++p
) {
3958 assert(cap_export_targets
.count(p
->first
));
3959 mds_rank_t target
= cap_export_targets
[p
->first
];
3960 if (rejoins
.count(target
) == 0)
3962 rejoins
[target
]->cap_exports
[p
->first
] = p
->second
;
3963 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3964 client_exports
[q
->first
].insert(target
);
3966 for (map
<client_t
, set
<mds_rank_t
> >::iterator p
= client_exports
.begin();
3967 p
!= client_exports
.end();
3969 entity_inst_t inst
= mds
->sessionmap
.get_inst(entity_name_t::CLIENT(p
->first
.v
));
3970 for (set
<mds_rank_t
>::iterator q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
3971 rejoins
[*q
]->client_map
[p
->first
] = inst
;
3976 // check all subtrees
3977 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
3978 p
!= subtrees
.end();
3980 CDir
*dir
= p
->first
;
3981 assert(dir
->is_subtree_root());
3982 if (dir
->is_ambiguous_dir_auth()) {
3983 // exporter is recovering, importer is survivor.
3984 assert(rejoins
.count(dir
->authority().first
));
3985 assert(!rejoins
.count(dir
->authority().second
));
3991 continue; // skip my own regions!
3993 mds_rank_t auth
= dir
->get_dir_auth().first
;
3995 if (rejoins
.count(auth
) == 0)
3996 continue; // don't care about this node's subtrees
3998 rejoin_walk(dir
, rejoins
[auth
]);
4001 // rejoin root inodes, too
4002 for (map
<mds_rank_t
, MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4005 if (mds
->is_rejoin()) {
4007 if (p
->first
== 0 && root
) {
4008 p
->second
->add_weak_inode(root
->vino());
4009 if (root
->is_dirty_scattered()) {
4010 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4011 p
->second
->add_scatterlock_state(root
);
4014 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4016 p
->second
->add_weak_inode(in
->vino());
4020 if (p
->first
== 0 && root
) {
4021 p
->second
->add_strong_inode(root
->vino(),
4022 root
->get_replica_nonce(),
4023 root
->get_caps_wanted(),
4024 root
->filelock
.get_state(),
4025 root
->nestlock
.get_state(),
4026 root
->dirfragtreelock
.get_state());
4027 root
->state_set(CInode::STATE_REJOINING
);
4028 if (root
->is_dirty_scattered()) {
4029 dout(10) << " sending scatterlock state on root " << *root
<< dendl
;
4030 p
->second
->add_scatterlock_state(root
);
4034 if (CInode
*in
= get_inode(MDS_INO_MDSDIR(p
->first
))) {
4035 p
->second
->add_strong_inode(in
->vino(),
4036 in
->get_replica_nonce(),
4037 in
->get_caps_wanted(),
4038 in
->filelock
.get_state(),
4039 in
->nestlock
.get_state(),
4040 in
->dirfragtreelock
.get_state());
4041 in
->state_set(CInode::STATE_REJOINING
);
4046 if (!mds
->is_rejoin()) {
4047 // i am survivor. send strong rejoin.
4048 // note request remote_auth_pins, xlocks
4049 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
4050 p
!= active_requests
.end();
4052 MDRequestRef
& mdr
= p
->second
;
4053 if (mdr
->is_slave())
4056 for (map
<MDSCacheObject
*,mds_rank_t
>::iterator q
= mdr
->remote_auth_pins
.begin();
4057 q
!= mdr
->remote_auth_pins
.end();
4059 if (!q
->first
->is_auth()) {
4060 assert(q
->second
== q
->first
->authority().first
);
4061 if (rejoins
.count(q
->second
) == 0) continue;
4062 MMDSCacheRejoin
*rejoin
= rejoins
[q
->second
];
4064 dout(15) << " " << *mdr
<< " authpin on " << *q
->first
<< dendl
;
4065 MDSCacheObjectInfo i
;
4066 q
->first
->set_object_info(i
);
4068 rejoin
->add_inode_authpin(vinodeno_t(i
.ino
, i
.snapid
), mdr
->reqid
, mdr
->attempt
);
4070 rejoin
->add_dentry_authpin(i
.dirfrag
, i
.dname
, i
.snapid
, mdr
->reqid
, mdr
->attempt
);
4072 if (mdr
->has_more() && mdr
->more()->is_remote_frozen_authpin
&&
4073 mdr
->more()->rename_inode
== q
->first
)
4074 rejoin
->add_inode_frozen_authpin(vinodeno_t(i
.ino
, i
.snapid
),
4075 mdr
->reqid
, mdr
->attempt
);
4079 for (set
<SimpleLock
*>::iterator q
= mdr
->xlocks
.begin();
4080 q
!= mdr
->xlocks
.end();
4082 if (!(*q
)->get_parent()->is_auth()) {
4083 mds_rank_t who
= (*q
)->get_parent()->authority().first
;
4084 if (rejoins
.count(who
) == 0) continue;
4085 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4087 dout(15) << " " << *mdr
<< " xlock on " << **q
<< " " << *(*q
)->get_parent() << dendl
;
4088 MDSCacheObjectInfo i
;
4089 (*q
)->get_parent()->set_object_info(i
);
4091 rejoin
->add_inode_xlock(vinodeno_t(i
.ino
, i
.snapid
), (*q
)->get_type(),
4092 mdr
->reqid
, mdr
->attempt
);
4094 rejoin
->add_dentry_xlock(i
.dirfrag
, i
.dname
, i
.snapid
,
4095 mdr
->reqid
, mdr
->attempt
);
4099 for (map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
4100 q
!= mdr
->remote_wrlocks
.end();
4102 mds_rank_t who
= q
->second
;
4103 if (rejoins
.count(who
) == 0) continue;
4104 MMDSCacheRejoin
*rejoin
= rejoins
[who
];
4106 dout(15) << " " << *mdr
<< " wrlock on " << q
->second
4107 << " " << q
->first
->get_parent() << dendl
;
4108 MDSCacheObjectInfo i
;
4109 q
->first
->get_parent()->set_object_info(i
);
4111 rejoin
->add_inode_wrlock(vinodeno_t(i
.ino
, i
.snapid
), q
->first
->get_type(),
4112 mdr
->reqid
, mdr
->attempt
);
4117 // send the messages
4118 for (map
<mds_rank_t
,MMDSCacheRejoin
*>::iterator p
= rejoins
.begin();
4121 assert(rejoin_sent
.count(p
->first
) == 0);
4122 assert(rejoin_ack_gather
.count(p
->first
) == 0);
4123 rejoin_sent
.insert(p
->first
);
4124 rejoin_ack_gather
.insert(p
->first
);
4125 mds
->send_message_mds(p
->second
, p
->first
);
4127 rejoin_ack_gather
.insert(mds
->get_nodeid()); // we need to complete rejoin_gather_finish, too
4128 rejoins_pending
= false;
4131 if (mds
->is_rejoin() && rejoins
.empty()) {
4132 dout(10) << "nothing to rejoin" << dendl
;
4133 rejoin_gather_finish();
4139 * rejoin_walk - build rejoin declarations for a subtree
4141 * @param dir subtree root
4142 * @param rejoin rejoin message
4144 * from a rejoining node:
4146 * weak dentries (w/ connectivity)
4148 * from a surviving node:
4150 * strong dentries (no connectivity!)
4153 void MDCache::rejoin_walk(CDir
*dir
, MMDSCacheRejoin
*rejoin
)
4155 dout(10) << "rejoin_walk " << *dir
<< dendl
;
4157 list
<CDir
*> nested
; // finish this dir, then do nested items
4159 if (mds
->is_rejoin()) {
4161 rejoin
->add_weak_dirfrag(dir
->dirfrag());
4162 for (auto &p
: dir
->items
) {
4163 CDentry
*dn
= p
.second
;
4164 assert(dn
->last
== CEPH_NOSNAP
);
4165 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4166 dout(15) << " add_weak_primary_dentry " << *dn
<< dendl
;
4167 assert(dnl
->is_primary());
4168 CInode
*in
= dnl
->get_inode();
4169 assert(dnl
->get_inode()->is_dir());
4170 rejoin
->add_weak_primary_dentry(dir
->ino(), dn
->get_name(), dn
->first
, dn
->last
, in
->ino());
4171 in
->get_nested_dirfrags(nested
);
4172 if (in
->is_dirty_scattered()) {
4173 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4174 rejoin
->add_scatterlock_state(in
);
4179 dout(15) << " add_strong_dirfrag " << *dir
<< dendl
;
4180 rejoin
->add_strong_dirfrag(dir
->dirfrag(), dir
->get_replica_nonce(), dir
->get_dir_rep());
4181 dir
->state_set(CDir::STATE_REJOINING
);
4183 for (auto it
= dir
->items
.begin(); it
!= dir
->items
.end(); ++it
) {
4184 CDentry
*dn
= it
->second
;
4185 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4186 dout(15) << " add_strong_dentry " << *dn
<< dendl
;
4187 rejoin
->add_strong_dentry(dir
->dirfrag(), dn
->get_name(), dn
->first
, dn
->last
,
4188 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
4189 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
4190 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
4191 dn
->get_replica_nonce(),
4192 dn
->lock
.get_state());
4193 dn
->state_set(CDentry::STATE_REJOINING
);
4194 if (dnl
->is_primary()) {
4195 CInode
*in
= dnl
->get_inode();
4196 dout(15) << " add_strong_inode " << *in
<< dendl
;
4197 rejoin
->add_strong_inode(in
->vino(),
4198 in
->get_replica_nonce(),
4199 in
->get_caps_wanted(),
4200 in
->filelock
.get_state(),
4201 in
->nestlock
.get_state(),
4202 in
->dirfragtreelock
.get_state());
4203 in
->state_set(CInode::STATE_REJOINING
);
4204 in
->get_nested_dirfrags(nested
);
4205 if (in
->is_dirty_scattered()) {
4206 dout(10) << " sending scatterlock state on " << *in
<< dendl
;
4207 rejoin
->add_scatterlock_state(in
);
4213 // recurse into nested dirs
4214 for (list
<CDir
*>::iterator p
= nested
.begin();
4217 rejoin_walk(*p
, rejoin
);
4223 * - reply with the lockstate
4225 * if i am active|stopping,
4226 * - remove source from replica list for everything not referenced here.
4227 * This function puts the passed message before returning.
4229 void MDCache::handle_cache_rejoin(MMDSCacheRejoin
*m
)
4231 dout(7) << "handle_cache_rejoin " << *m
<< " from " << m
->get_source()
4232 << " (" << m
->get_payload().length() << " bytes)"
4236 case MMDSCacheRejoin::OP_WEAK
:
4237 handle_cache_rejoin_weak(m
);
4239 case MMDSCacheRejoin::OP_STRONG
:
4240 handle_cache_rejoin_strong(m
);
4242 case MMDSCacheRejoin::OP_ACK
:
4243 handle_cache_rejoin_ack(m
);
4254 * handle_cache_rejoin_weak
4257 * - is recovering from their journal.
4258 * - may have incorrect (out of date) inode contents
4259 * - will include weak dirfrag if sender is dirfrag auth and parent inode auth is recipient
4261 * if the sender didn't trim_non_auth(), they
4262 * - may have incorrect (out of date) dentry/inode linkage
4263 * - may have deleted/purged inodes
4264 * and i may have to go to disk to get accurate inode contents. yuck.
4265 * This functions DOES NOT put the passed message before returning
4267 void MDCache::handle_cache_rejoin_weak(MMDSCacheRejoin
*weak
)
4269 mds_rank_t from
= mds_rank_t(weak
->get_source().num());
4271 // possible response(s)
4272 MMDSCacheRejoin
*ack
= 0; // if survivor
4273 set
<vinodeno_t
> acked_inodes
; // if survivor
4274 set
<SimpleLock
*> gather_locks
; // if survivor
4275 bool survivor
= false; // am i a survivor?
4277 if (mds
->is_clientreplay() || mds
->is_active() || mds
->is_stopping()) {
4279 dout(10) << "i am a surivivor, and will ack immediately" << dendl
;
4280 ack
= new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
4282 map
<inodeno_t
,map
<client_t
,Capability::Import
> > imported_caps
;
4284 // check cap exports
4285 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4286 CInode
*in
= get_inode(p
->first
);
4287 assert(!in
|| in
->is_auth());
4288 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4289 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< " on " << *in
<< dendl
;
4290 Capability
*cap
= rejoin_import_cap(in
, q
->first
, q
->second
, from
);
4291 Capability::Import
& im
= imported_caps
[p
->first
][q
->first
];
4293 im
.cap_id
= cap
->get_cap_id();
4294 im
.issue_seq
= cap
->get_last_seq();
4295 im
.mseq
= cap
->get_mseq();
4300 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
, true);
4303 ::encode(imported_caps
, ack
->imported_caps
);
4305 assert(mds
->is_rejoin());
4307 // we may have already received a strong rejoin from the sender.
4308 rejoin_scour_survivor_replicas(from
, NULL
, acked_inodes
, gather_locks
);
4309 assert(gather_locks
.empty());
4311 // check cap exports.
4312 rejoin_client_map
.insert(weak
->client_map
.begin(), weak
->client_map
.end());
4314 for (auto p
= weak
->cap_exports
.begin(); p
!= weak
->cap_exports
.end(); ++p
) {
4315 CInode
*in
= get_inode(p
->first
);
4316 assert(!in
|| in
->is_auth());
4318 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
4319 dout(10) << " claiming cap import " << p
->first
<< " client." << q
->first
<< dendl
;
4320 cap_imports
[p
->first
][q
->first
][from
] = q
->second
;
4325 // assimilate any potentially dirty scatterlock state
4326 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4327 p
!= weak
->inode_scatterlocks
.end();
4329 CInode
*in
= get_inode(p
->first
);
4331 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4332 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4333 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4335 rejoin_potential_updated_scatterlocks
.insert(in
);
4338 // recovering peer may send incorrect dirfrags here. we need to
4339 // infer which dirfrag they meant. the ack will include a
4340 // strong_dirfrag that will set them straight on the fragmentation.
4343 set
<CDir
*> dirs_to_share
;
4344 for (set
<dirfrag_t
>::iterator p
= weak
->weak_dirfrags
.begin();
4345 p
!= weak
->weak_dirfrags
.end();
4347 CInode
*diri
= get_inode(p
->ino
);
4349 dout(0) << " missing dir ino " << p
->ino
<< dendl
;
4353 if (diri
->dirfragtree
.is_leaf(p
->frag
)) {
4354 ls
.push_back(p
->frag
);
4356 diri
->dirfragtree
.get_leaves_under(p
->frag
, ls
);
4358 ls
.push_back(diri
->dirfragtree
[p
->frag
.value()]);
4360 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4362 CDir
*dir
= diri
->get_dirfrag(fg
);
4364 dout(0) << " missing dir for " << p
->frag
<< " (which maps to " << fg
<< ") on " << *diri
<< dendl
;
4368 if (dirs_to_share
.count(dir
)) {
4369 dout(10) << " already have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4371 dirs_to_share
.insert(dir
);
4372 unsigned nonce
= dir
->add_replica(from
);
4373 dout(10) << " have " << p
->frag
<< " -> " << fg
<< " " << *dir
<< dendl
;
4375 ack
->add_strong_dirfrag(dir
->dirfrag(), nonce
, dir
->dir_rep
);
4376 ack
->add_dirfrag_base(dir
);
4382 for (map
<inodeno_t
,map
<string_snap_t
,MMDSCacheRejoin::dn_weak
> >::iterator p
= weak
->weak
.begin();
4383 p
!= weak
->weak
.end();
4385 CInode
*diri
= get_inode(p
->first
);
4387 dout(0) << " missing dir ino " << p
->first
<< dendl
;
4392 for (map
<string_snap_t
,MMDSCacheRejoin::dn_weak
>::iterator q
= p
->second
.begin();
4393 q
!= p
->second
.end();
4395 // locate proper dirfrag.
4396 // optimize for common case (one dirfrag) to avoid dirs_to_share set check
4397 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4398 if (!dir
|| dir
->get_frag() != fg
) {
4399 dir
= diri
->get_dirfrag(fg
);
4401 dout(0) << " missing dir frag " << fg
<< " on " << *diri
<< dendl
;
4403 assert(dirs_to_share
.count(dir
));
4407 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4409 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4410 assert(dnl
->is_primary());
4412 if (survivor
&& dn
->is_replica(from
))
4413 dentry_remove_replica(dn
, from
, gather_locks
);
4414 unsigned dnonce
= dn
->add_replica(from
);
4415 dout(10) << " have " << *dn
<< dendl
;
4417 ack
->add_strong_dentry(dir
->dirfrag(), dn
->get_name(), dn
->first
, dn
->last
,
4418 dnl
->get_inode()->ino(), inodeno_t(0), 0,
4419 dnonce
, dn
->lock
.get_replica_state());
4422 CInode
*in
= dnl
->get_inode();
4425 if (survivor
&& in
->is_replica(from
))
4426 inode_remove_replica(in
, from
, true, gather_locks
);
4427 unsigned inonce
= in
->add_replica(from
);
4428 dout(10) << " have " << *in
<< dendl
;
4430 // scatter the dirlock, just in case?
4431 if (!survivor
&& in
->is_dir() && in
->has_subtree_root_dirfrag())
4432 in
->filelock
.set_state(LOCK_MIX
);
4435 acked_inodes
.insert(in
->vino());
4436 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4438 in
->_encode_locks_state_for_rejoin(bl
, from
);
4439 ack
->add_inode_locks(in
, inonce
, bl
);
4444 // weak base inodes? (root, stray, etc.)
4445 for (set
<vinodeno_t
>::iterator p
= weak
->weak_inodes
.begin();
4446 p
!= weak
->weak_inodes
.end();
4448 CInode
*in
= get_inode(*p
);
4449 assert(in
); // hmm fixme wrt stray?
4450 if (survivor
&& in
->is_replica(from
))
4451 inode_remove_replica(in
, from
, true, gather_locks
);
4452 unsigned inonce
= in
->add_replica(from
);
4453 dout(10) << " have base " << *in
<< dendl
;
4456 acked_inodes
.insert(in
->vino());
4457 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4459 in
->_encode_locks_state_for_rejoin(bl
, from
);
4460 ack
->add_inode_locks(in
, inonce
, bl
);
4464 assert(rejoin_gather
.count(from
));
4465 rejoin_gather
.erase(from
);
4467 // survivor. do everything now.
4468 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= weak
->inode_scatterlocks
.begin();
4469 p
!= weak
->inode_scatterlocks
.end();
4471 CInode
*in
= get_inode(p
->first
);
4473 dout(10) << " including base inode (due to potential scatterlock update) " << *in
<< dendl
;
4474 acked_inodes
.insert(in
->vino());
4475 ack
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
4478 rejoin_scour_survivor_replicas(from
, ack
, acked_inodes
, gather_locks
);
4479 mds
->send_message(ack
, weak
->get_connection());
4481 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
4482 if (!(*p
)->is_stable())
4483 mds
->locker
->eval_gather(*p
);
4487 if (rejoin_gather
.empty()) {
4488 rejoin_gather_finish();
4490 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4495 class C_MDC_RejoinGatherFinish
: public MDCacheContext
{
4497 explicit C_MDC_RejoinGatherFinish(MDCache
*c
) : MDCacheContext(c
) {}
4498 void finish(int r
) override
{
4499 mdcache
->rejoin_gather_finish();
4504 * rejoin_scour_survivor_replica - remove source from replica list on unmentioned objects
4506 * all validated replicas are acked with a strong nonce, etc. if that isn't in the
4507 * ack, the replica dne, and we can remove it from our replica maps.
4509 void MDCache::rejoin_scour_survivor_replicas(mds_rank_t from
, MMDSCacheRejoin
*ack
,
4510 set
<vinodeno_t
>& acked_inodes
,
4511 set
<SimpleLock
*>& gather_locks
)
4513 dout(10) << "rejoin_scour_survivor_replicas from mds." << from
<< dendl
;
4515 auto scour_func
= [this, from
, ack
, &acked_inodes
, &gather_locks
] (CInode
*in
) {
4517 if (in
->is_auth() &&
4518 in
->is_replica(from
) &&
4519 (ack
== NULL
|| acked_inodes
.count(in
->vino()) == 0)) {
4520 inode_remove_replica(in
, from
, false, gather_locks
);
4521 dout(10) << " rem " << *in
<< dendl
;
4528 in
->get_dirfrags(dfs
);
4529 for (list
<CDir
*>::iterator p
= dfs
.begin();
4533 if (!dir
->is_auth())
4536 if (dir
->is_replica(from
) &&
4537 (ack
== NULL
|| ack
->strong_dirfrags
.count(dir
->dirfrag()) == 0)) {
4538 dir
->remove_replica(from
);
4539 dout(10) << " rem " << *dir
<< dendl
;
4543 for (auto &p
: dir
->items
) {
4544 CDentry
*dn
= p
.second
;
4546 if (dn
->is_replica(from
) &&
4548 ack
->strong_dentries
.count(dir
->dirfrag()) == 0 ||
4549 ack
->strong_dentries
[dir
->dirfrag()].count(string_snap_t(dn
->get_name(), dn
->last
)) == 0)) {
4550 dentry_remove_replica(dn
, from
, gather_locks
);
4551 dout(10) << " rem " << *dn
<< dendl
;
4557 for (auto &p
: inode_map
)
4558 scour_func(p
.second
);
4559 for (auto &p
: snap_inode_map
)
4560 scour_func(p
.second
);
4564 CInode
*MDCache::rejoin_invent_inode(inodeno_t ino
, snapid_t last
)
4566 CInode
*in
= new CInode(this, true, 1, last
);
4567 in
->inode
.ino
= ino
;
4568 in
->state_set(CInode::STATE_REJOINUNDEF
);
4570 rejoin_undef_inodes
.insert(in
);
4571 dout(10) << " invented " << *in
<< dendl
;
4575 CDir
*MDCache::rejoin_invent_dirfrag(dirfrag_t df
)
4577 CInode
*in
= get_inode(df
.ino
);
4579 in
= rejoin_invent_inode(df
.ino
, CEPH_NOSNAP
);
4580 if (!in
->is_dir()) {
4581 assert(in
->state_test(CInode::STATE_REJOINUNDEF
));
4582 in
->inode
.mode
= S_IFDIR
;
4583 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4585 CDir
*dir
= in
->get_or_open_dirfrag(this, df
.frag
);
4586 dir
->state_set(CDir::STATE_REJOINUNDEF
);
4587 rejoin_undef_dirfrags
.insert(dir
);
4588 dout(10) << " invented " << *dir
<< dendl
;
4592 /* This functions DOES NOT put the passed message before returning */
4593 void MDCache::handle_cache_rejoin_strong(MMDSCacheRejoin
*strong
)
4595 mds_rank_t from
= mds_rank_t(strong
->get_source().num());
4597 // only a recovering node will get a strong rejoin.
4598 assert(mds
->is_rejoin());
4600 // assimilate any potentially dirty scatterlock state
4601 for (map
<inodeno_t
,MMDSCacheRejoin::lock_bls
>::iterator p
= strong
->inode_scatterlocks
.begin();
4602 p
!= strong
->inode_scatterlocks
.end();
4604 CInode
*in
= get_inode(p
->first
);
4606 in
->decode_lock_state(CEPH_LOCK_IFILE
, p
->second
.file
);
4607 in
->decode_lock_state(CEPH_LOCK_INEST
, p
->second
.nest
);
4608 in
->decode_lock_state(CEPH_LOCK_IDFT
, p
->second
.dft
);
4609 rejoin_potential_updated_scatterlocks
.insert(in
);
4612 rejoin_unlinked_inodes
[from
].clear();
4614 // surviving peer may send incorrect dirfrag here (maybe they didn't
4615 // get the fragment notify, or maybe we rolled back?). we need to
4616 // infer the right frag and get them with the program. somehow.
4617 // we don't normally send ACK.. so we'll need to bundle this with
4618 // MISSING or something.
4620 // strong dirfrags/dentries.
4621 // also process auth_pins, xlocks.
4622 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= strong
->strong_dirfrags
.begin();
4623 p
!= strong
->strong_dirfrags
.end();
4625 CInode
*diri
= get_inode(p
->first
.ino
);
4627 diri
= rejoin_invent_inode(p
->first
.ino
, CEPH_NOSNAP
);
4628 CDir
*dir
= diri
->get_dirfrag(p
->first
.frag
);
4629 bool refragged
= false;
4631 dout(10) << " have " << *dir
<< dendl
;
4633 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
4634 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), frag_t()));
4635 else if (diri
->dirfragtree
.is_leaf(p
->first
.frag
))
4636 dir
= rejoin_invent_dirfrag(p
->first
);
4639 dir
->add_replica(from
, p
->second
.nonce
);
4640 dir
->dir_rep
= p
->second
.dir_rep
;
4642 dout(10) << " frag " << p
->first
<< " doesn't match dirfragtree " << *diri
<< dendl
;
4644 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, ls
);
4646 ls
.push_back(diri
->dirfragtree
[p
->first
.frag
.value()]);
4647 dout(10) << " maps to frag(s) " << ls
<< dendl
;
4648 for (list
<frag_t
>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4649 CDir
*dir
= diri
->get_dirfrag(*q
);
4651 dir
= rejoin_invent_dirfrag(dirfrag_t(diri
->ino(), *q
));
4653 dout(10) << " have(approx) " << *dir
<< dendl
;
4654 dir
->add_replica(from
, p
->second
.nonce
);
4655 dir
->dir_rep
= p
->second
.dir_rep
;
4660 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= strong
->strong_dentries
[p
->first
];
4661 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4666 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4668 frag_t fg
= diri
->pick_dirfrag(q
->first
.name
);
4669 dir
= diri
->get_dirfrag(fg
);
4671 dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4674 if (q
->second
.is_remote()) {
4675 dn
= dir
->add_remote_dentry(q
->first
.name
, q
->second
.remote_ino
, q
->second
.remote_d_type
,
4676 q
->second
.first
, q
->first
.snapid
);
4677 } else if (q
->second
.is_null()) {
4678 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4680 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4681 if (!in
) in
= rejoin_invent_inode(q
->second
.ino
, q
->first
.snapid
);
4682 dn
= dir
->add_primary_dentry(q
->first
.name
, in
, q
->second
.first
, q
->first
.snapid
);
4684 dout(10) << " invented " << *dn
<< dendl
;
4686 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4689 if (strong
->authpinned_dentries
.count(p
->first
) &&
4690 strong
->authpinned_dentries
[p
->first
].count(q
->first
)) {
4691 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_dentries
[p
->first
][q
->first
].begin();
4692 r
!= strong
->authpinned_dentries
[p
->first
][q
->first
].end();
4694 dout(10) << " dn authpin by " << *r
<< " on " << *dn
<< dendl
;
4696 // get/create slave mdrequest
4698 if (have_request(r
->reqid
))
4699 mdr
= request_get(r
->reqid
);
4701 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4707 if (strong
->xlocked_dentries
.count(p
->first
) &&
4708 strong
->xlocked_dentries
[p
->first
].count(q
->first
)) {
4709 MMDSCacheRejoin::slave_reqid r
= strong
->xlocked_dentries
[p
->first
][q
->first
];
4710 dout(10) << " dn xlock by " << r
<< " on " << *dn
<< dendl
;
4711 MDRequestRef mdr
= request_get(r
.reqid
); // should have this from auth_pin above.
4712 assert(mdr
->is_auth_pinned(dn
));
4713 if (!mdr
->xlocks
.count(&dn
->versionlock
)) {
4714 assert(dn
->versionlock
.can_xlock_local());
4715 dn
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4716 mdr
->xlocks
.insert(&dn
->versionlock
);
4717 mdr
->locks
.insert(&dn
->versionlock
);
4719 if (dn
->lock
.is_stable())
4720 dn
->auth_pin(&dn
->lock
);
4721 dn
->lock
.set_state(LOCK_XLOCK
);
4722 dn
->lock
.get_xlock(mdr
, mdr
->get_client());
4723 mdr
->xlocks
.insert(&dn
->lock
);
4724 mdr
->locks
.insert(&dn
->lock
);
4727 dn
->add_replica(from
, q
->second
.nonce
);
4728 dout(10) << " have " << *dn
<< dendl
;
4730 if (dnl
->is_primary()) {
4731 if (q
->second
.is_primary()) {
4732 if (vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != dnl
->get_inode()->vino()) {
4733 // the survivor missed MDentryUnlink+MDentryLink messages ?
4734 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4735 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4737 assert(in
->get_parent_dn());
4738 rejoin_unlinked_inodes
[from
].insert(in
);
4739 dout(7) << " sender has primary dentry but wrong inode" << dendl
;
4742 // the survivor missed MDentryLink message ?
4743 assert(strong
->strong_inodes
.count(dnl
->get_inode()->vino()) == 0);
4744 dout(7) << " sender doesn't have primay dentry" << dendl
;
4747 if (q
->second
.is_primary()) {
4748 // the survivor missed MDentryUnlink message ?
4749 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4751 assert(in
->get_parent_dn());
4752 rejoin_unlinked_inodes
[from
].insert(in
);
4753 dout(7) << " sender has primary dentry but we don't" << dendl
;
4759 for (map
<vinodeno_t
, MMDSCacheRejoin::inode_strong
>::iterator p
= strong
->strong_inodes
.begin();
4760 p
!= strong
->strong_inodes
.end();
4762 CInode
*in
= get_inode(p
->first
);
4764 in
->add_replica(from
, p
->second
.nonce
);
4765 dout(10) << " have " << *in
<< dendl
;
4767 MMDSCacheRejoin::inode_strong
&is
= p
->second
;
4770 if (is
.caps_wanted
) {
4771 in
->mds_caps_wanted
[from
] = is
.caps_wanted
;
4772 dout(15) << " inode caps_wanted " << ccap_string(is
.caps_wanted
)
4773 << " on " << *in
<< dendl
;
4777 // infer state from replica state:
4778 // * go to MIX if they might have wrlocks
4779 // * go to LOCK if they are LOCK (just bc identify_files_to_recover might start twiddling filelock)
4780 in
->filelock
.infer_state_from_strong_rejoin(is
.filelock
, !in
->is_dir()); // maybe also go to LOCK
4781 in
->nestlock
.infer_state_from_strong_rejoin(is
.nestlock
, false);
4782 in
->dirfragtreelock
.infer_state_from_strong_rejoin(is
.dftlock
, false);
4785 if (strong
->authpinned_inodes
.count(in
->vino())) {
4786 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= strong
->authpinned_inodes
[in
->vino()].begin();
4787 r
!= strong
->authpinned_inodes
[in
->vino()].end();
4789 dout(10) << " inode authpin by " << *r
<< " on " << *in
<< dendl
;
4791 // get/create slave mdrequest
4793 if (have_request(r
->reqid
))
4794 mdr
= request_get(r
->reqid
);
4796 mdr
= request_start_slave(r
->reqid
, r
->attempt
, strong
);
4797 if (strong
->frozen_authpin_inodes
.count(in
->vino())) {
4798 assert(!in
->get_num_auth_pins());
4799 mdr
->freeze_auth_pin(in
);
4801 assert(!in
->is_frozen_auth_pin());
4807 if (strong
->xlocked_inodes
.count(in
->vino())) {
4808 for (map
<int,MMDSCacheRejoin::slave_reqid
>::iterator q
= strong
->xlocked_inodes
[in
->vino()].begin();
4809 q
!= strong
->xlocked_inodes
[in
->vino()].end();
4811 SimpleLock
*lock
= in
->get_lock(q
->first
);
4812 dout(10) << " inode xlock by " << q
->second
<< " on " << *lock
<< " on " << *in
<< dendl
;
4813 MDRequestRef mdr
= request_get(q
->second
.reqid
); // should have this from auth_pin above.
4814 assert(mdr
->is_auth_pinned(in
));
4815 if (!mdr
->xlocks
.count(&in
->versionlock
)) {
4816 assert(in
->versionlock
.can_xlock_local());
4817 in
->versionlock
.get_xlock(mdr
, mdr
->get_client());
4818 mdr
->xlocks
.insert(&in
->versionlock
);
4819 mdr
->locks
.insert(&in
->versionlock
);
4821 if (lock
->is_stable())
4823 lock
->set_state(LOCK_XLOCK
);
4824 if (lock
== &in
->filelock
)
4826 lock
->get_xlock(mdr
, mdr
->get_client());
4827 mdr
->xlocks
.insert(lock
);
4828 mdr
->locks
.insert(lock
);
4833 for (map
<vinodeno_t
, map
<int, list
<MMDSCacheRejoin::slave_reqid
> > >::iterator p
= strong
->wrlocked_inodes
.begin();
4834 p
!= strong
->wrlocked_inodes
.end();
4836 CInode
*in
= get_inode(p
->first
);
4837 for (map
<int, list
<MMDSCacheRejoin::slave_reqid
> >::iterator q
= p
->second
.begin();
4838 q
!= p
->second
.end();
4840 SimpleLock
*lock
= in
->get_lock(q
->first
);
4841 for (list
<MMDSCacheRejoin::slave_reqid
>::iterator r
= q
->second
.begin();
4842 r
!= q
->second
.end();
4844 dout(10) << " inode wrlock by " << *r
<< " on " << *lock
<< " on " << *in
<< dendl
;
4845 MDRequestRef mdr
= request_get(r
->reqid
); // should have this from auth_pin above.
4847 assert(mdr
->is_auth_pinned(in
));
4848 lock
->set_state(LOCK_MIX
);
4849 if (lock
== &in
->filelock
)
4851 lock
->get_wrlock(true);
4852 mdr
->wrlocks
.insert(lock
);
4853 mdr
->locks
.insert(lock
);
4859 assert(rejoin_gather
.count(from
));
4860 rejoin_gather
.erase(from
);
4861 if (rejoin_gather
.empty()) {
4862 rejoin_gather_finish();
4864 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")" << dendl
;
4868 /* This functions DOES NOT put the passed message before returning */
4869 void MDCache::handle_cache_rejoin_ack(MMDSCacheRejoin
*ack
)
4871 dout(7) << "handle_cache_rejoin_ack from " << ack
->get_source() << dendl
;
4872 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
4874 assert(mds
->get_state() >= MDSMap::STATE_REJOIN
);
4875 bool survivor
= !mds
->is_rejoin();
4877 // for sending cache expire message
4878 set
<CInode
*> isolated_inodes
;
4879 set
<CInode
*> refragged_inodes
;
4882 for (map
<dirfrag_t
, MMDSCacheRejoin::dirfrag_strong
>::iterator p
= ack
->strong_dirfrags
.begin();
4883 p
!= ack
->strong_dirfrags
.end();
4885 // we may have had incorrect dir fragmentation; refragment based
4886 // on what they auth tells us.
4887 CDir
*dir
= get_dirfrag(p
->first
);
4889 dir
= get_force_dirfrag(p
->first
, false);
4891 refragged_inodes
.insert(dir
->get_inode());
4894 CInode
*diri
= get_inode(p
->first
.ino
);
4896 // barebones inode; the full inode loop below will clean up.
4897 diri
= new CInode(this, false);
4898 diri
->inode
.ino
= p
->first
.ino
;
4899 diri
->inode
.mode
= S_IFDIR
;
4900 diri
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4902 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
) {
4903 diri
->inode_auth
= mds_authority_t(from
, CDIR_AUTH_UNKNOWN
);
4904 dout(10) << " add inode " << *diri
<< dendl
;
4906 diri
->inode_auth
= CDIR_AUTH_DEFAULT
;
4907 isolated_inodes
.insert(diri
);
4908 dout(10) << " unconnected dirfrag " << p
->first
<< dendl
;
4911 // barebones dirfrag; the full dirfrag loop below will clean up.
4912 dir
= diri
->add_dirfrag(new CDir(diri
, p
->first
.frag
, this, false));
4913 if (MDS_INO_MDSDIR(from
) == p
->first
.ino
||
4914 (dir
->authority() != CDIR_AUTH_UNDEF
&&
4915 dir
->authority().first
!= from
))
4916 adjust_subtree_auth(dir
, from
);
4917 dout(10) << " add dirfrag " << *dir
<< dendl
;
4920 dir
->set_replica_nonce(p
->second
.nonce
);
4921 dir
->state_clear(CDir::STATE_REJOINING
);
4922 dout(10) << " got " << *dir
<< dendl
;
4925 map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>& dmap
= ack
->strong_dentries
[p
->first
];
4926 for (map
<string_snap_t
,MMDSCacheRejoin::dn_strong
>::iterator q
= dmap
.begin();
4929 CDentry
*dn
= dir
->lookup(q
->first
.name
, q
->first
.snapid
);
4931 dn
= dir
->add_null_dentry(q
->first
.name
, q
->second
.first
, q
->first
.snapid
);
4933 CDentry::linkage_t
*dnl
= dn
->get_linkage();
4935 assert(dn
->last
== q
->first
.snapid
);
4936 if (dn
->first
!= q
->second
.first
) {
4937 dout(10) << " adjust dn.first " << dn
->first
<< " -> " << q
->second
.first
<< " on " << *dn
<< dendl
;
4938 dn
->first
= q
->second
.first
;
4941 // may have bad linkage if we missed dentry link/unlink messages
4942 if (dnl
->is_primary()) {
4943 CInode
*in
= dnl
->get_inode();
4944 if (!q
->second
.is_primary() ||
4945 vinodeno_t(q
->second
.ino
, q
->first
.snapid
) != in
->vino()) {
4946 dout(10) << " had bad linkage for " << *dn
<< ", unlinking " << *in
<< dendl
;
4947 dir
->unlink_inode(dn
);
4949 } else if (dnl
->is_remote()) {
4950 if (!q
->second
.is_remote() ||
4951 q
->second
.remote_ino
!= dnl
->get_remote_ino() ||
4952 q
->second
.remote_d_type
!= dnl
->get_remote_d_type()) {
4953 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4954 dir
->unlink_inode(dn
);
4957 if (!q
->second
.is_null())
4958 dout(10) << " had bad linkage for " << *dn
<< dendl
;
4961 // hmm, did we have the proper linkage here?
4962 if (dnl
->is_null() && !q
->second
.is_null()) {
4963 if (q
->second
.is_remote()) {
4964 dn
->dir
->link_remote_inode(dn
, q
->second
.remote_ino
, q
->second
.remote_d_type
);
4966 CInode
*in
= get_inode(q
->second
.ino
, q
->first
.snapid
);
4968 // barebones inode; assume it's dir, the full inode loop below will clean up.
4969 in
= new CInode(this, false, q
->second
.first
, q
->first
.snapid
);
4970 in
->inode
.ino
= q
->second
.ino
;
4971 in
->inode
.mode
= S_IFDIR
;
4972 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
4974 dout(10) << " add inode " << *in
<< dendl
;
4975 } else if (in
->get_parent_dn()) {
4976 dout(10) << " had bad linkage for " << *(in
->get_parent_dn())
4977 << ", unlinking " << *in
<< dendl
;
4978 in
->get_parent_dir()->unlink_inode(in
->get_parent_dn());
4980 dn
->dir
->link_primary_inode(dn
, in
);
4981 isolated_inodes
.erase(in
);
4985 dn
->set_replica_nonce(q
->second
.nonce
);
4986 dn
->lock
.set_state_rejoin(q
->second
.lock
, rejoin_waiters
, survivor
);
4987 dn
->state_clear(CDentry::STATE_REJOINING
);
4988 dout(10) << " got " << *dn
<< dendl
;
4992 for (set
<CInode
*>::iterator p
= refragged_inodes
.begin();
4993 p
!= refragged_inodes
.end();
4996 (*p
)->get_nested_dirfrags(ls
);
4997 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
4998 if ((*q
)->is_auth() || ack
->strong_dirfrags
.count((*q
)->dirfrag()))
5000 assert((*q
)->get_num_any() == 0);
5001 (*p
)->close_dirfrag((*q
)->get_frag());
5006 for (map
<dirfrag_t
, bufferlist
>::iterator p
= ack
->dirfrag_bases
.begin();
5007 p
!= ack
->dirfrag_bases
.end();
5009 CDir
*dir
= get_dirfrag(p
->first
);
5011 bufferlist::iterator q
= p
->second
.begin();
5012 dir
->_decode_base(q
);
5013 dout(10) << " got dir replica " << *dir
<< dendl
;
5017 bufferlist::iterator p
= ack
->inode_base
.begin();
5024 ::decode(basebl
, p
);
5025 CInode
*in
= get_inode(ino
, last
);
5027 bufferlist::iterator q
= basebl
.begin();
5028 in
->_decode_base(q
);
5029 dout(10) << " got inode base " << *in
<< dendl
;
5033 p
= ack
->inode_locks
.begin();
5034 //dout(10) << "inode_locks len " << ack->inode_locks.length() << " is " << ack->inode_locks << dendl;
5043 ::decode(lockbl
, p
);
5045 CInode
*in
= get_inode(ino
, last
);
5047 in
->set_replica_nonce(nonce
);
5048 bufferlist::iterator q
= lockbl
.begin();
5049 in
->_decode_locks_rejoin(q
, rejoin_waiters
, rejoin_eval_locks
, survivor
);
5050 in
->state_clear(CInode::STATE_REJOINING
);
5051 dout(10) << " got inode locks " << *in
<< dendl
;
5054 // FIXME: This can happen if entire subtree, together with the inode subtree root
5055 // belongs to, were trimmed between sending cache rejoin and receiving rejoin ack.
5056 assert(isolated_inodes
.empty());
5058 map
<inodeno_t
,map
<client_t
,Capability::Import
> > peer_imported
;
5059 bufferlist::iterator bp
= ack
->imported_caps
.begin();
5060 ::decode(peer_imported
, bp
);
5062 for (map
<inodeno_t
,map
<client_t
,Capability::Import
> >::iterator p
= peer_imported
.begin();
5063 p
!= peer_imported
.end();
5065 assert(cap_exports
.count(p
->first
));
5066 assert(cap_export_targets
.count(p
->first
));
5067 assert(cap_export_targets
[p
->first
] == from
);
5068 for (map
<client_t
,Capability::Import
>::iterator q
= p
->second
.begin();
5069 q
!= p
->second
.end();
5071 assert(cap_exports
[p
->first
].count(q
->first
));
5073 dout(10) << " exporting caps for client." << q
->first
<< " ino " << p
->first
<< dendl
;
5074 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5077 // mark client caps stale.
5078 MClientCaps
*m
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0,
5079 cap_exports
[p
->first
][q
->first
].capinfo
.cap_id
, 0,
5080 mds
->get_osd_epoch_barrier());
5081 m
->set_cap_peer(q
->second
.cap_id
, q
->second
.issue_seq
, q
->second
.mseq
,
5082 (q
->second
.cap_id
> 0 ? from
: -1), 0);
5083 mds
->send_message_client_counted(m
, session
);
5085 cap_exports
[p
->first
].erase(q
->first
);
5087 assert(cap_exports
[p
->first
].empty());
5091 assert(rejoin_ack_gather
.count(from
));
5092 rejoin_ack_gather
.erase(from
);
5095 if (rejoin_gather
.empty()) {
5096 // eval unstable scatter locks after all wrlocks are rejoined.
5097 while (!rejoin_eval_locks
.empty()) {
5098 SimpleLock
*lock
= rejoin_eval_locks
.front();
5099 rejoin_eval_locks
.pop_front();
5100 if (!lock
->is_stable())
5101 mds
->locker
->eval_gather(lock
);
5105 if (rejoin_gather
.empty() && // make sure we've gotten our FULL inodes, too.
5106 rejoin_ack_gather
.empty()) {
5107 // finally, kickstart past snap parent opens
5108 open_snap_parents();
5110 dout(7) << "still need rejoin from (" << rejoin_gather
<< ")"
5111 << ", rejoin_ack from (" << rejoin_ack_gather
<< ")" << dendl
;
5115 mds
->queue_waiters(rejoin_waiters
);
5120 * rejoin_trim_undef_inodes() -- remove REJOINUNDEF flagged inodes
5122 * FIXME: wait, can this actually happen? a survivor should generate cache trim
5123 * messages that clean these guys up...
5125 void MDCache::rejoin_trim_undef_inodes()
5127 dout(10) << "rejoin_trim_undef_inodes" << dendl
;
5129 while (!rejoin_undef_inodes
.empty()) {
5130 set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5132 rejoin_undef_inodes
.erase(p
);
5134 in
->clear_replica_map();
5136 // close out dirfrags
5139 in
->get_dirfrags(dfls
);
5140 for (list
<CDir
*>::iterator p
= dfls
.begin();
5144 dir
->clear_replica_map();
5146 for (auto &p
: dir
->items
) {
5147 CDentry
*dn
= p
.second
;
5148 dn
->clear_replica_map();
5150 dout(10) << " trimming " << *dn
<< dendl
;
5151 dir
->remove_dentry(dn
);
5154 dout(10) << " trimming " << *dir
<< dendl
;
5155 in
->close_dirfrag(dir
->dirfrag().frag
);
5159 CDentry
*dn
= in
->get_parent_dn();
5161 dn
->clear_replica_map();
5162 dout(10) << " trimming " << *dn
<< dendl
;
5163 dn
->dir
->remove_dentry(dn
);
5165 dout(10) << " trimming " << *in
<< dendl
;
5170 assert(rejoin_undef_inodes
.empty());
5173 void MDCache::rejoin_gather_finish()
5175 dout(10) << "rejoin_gather_finish" << dendl
;
5176 assert(mds
->is_rejoin());
5178 if (open_undef_inodes_dirfrags())
5181 if (process_imported_caps())
5184 choose_lock_states_and_reconnect_caps();
5186 identify_files_to_recover();
5189 // signal completion of fetches, rejoin_gather_finish, etc.
5190 assert(rejoin_ack_gather
.count(mds
->get_nodeid()));
5191 rejoin_ack_gather
.erase(mds
->get_nodeid());
5193 // did we already get our acks too?
5194 if (rejoin_ack_gather
.empty()) {
5195 // finally, kickstart past snap parent opens
5196 open_snap_parents();
5200 class C_MDC_RejoinOpenInoFinish
: public MDCacheContext
{
5203 C_MDC_RejoinOpenInoFinish(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
5204 void finish(int r
) override
{
5205 mdcache
->rejoin_open_ino_finish(ino
, r
);
5209 void MDCache::rejoin_open_ino_finish(inodeno_t ino
, int ret
)
5211 dout(10) << "open_caps_inode_finish ino " << ino
<< " ret " << ret
<< dendl
;
5214 cap_imports_missing
.insert(ino
);
5215 } else if (ret
== mds
->get_nodeid()) {
5216 assert(get_inode(ino
));
5218 auto p
= cap_imports
.find(ino
);
5219 assert(p
!= cap_imports
.end());
5220 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5221 assert(q
->second
.count(MDS_RANK_NONE
));
5222 assert(q
->second
.size() == 1);
5223 rejoin_export_caps(p
->first
, q
->first
, q
->second
[MDS_RANK_NONE
], ret
);
5225 cap_imports
.erase(p
);
5228 assert(cap_imports_num_opening
> 0);
5229 cap_imports_num_opening
--;
5231 if (cap_imports_num_opening
== 0) {
5232 if (rejoin_gather
.empty())
5233 rejoin_gather_finish();
5234 else if (rejoin_gather
.count(mds
->get_nodeid()))
5235 process_imported_caps();
5239 class C_MDC_RejoinSessionsOpened
: public MDCacheLogContext
{
5241 map
<client_t
,entity_inst_t
> client_map
;
5242 map
<client_t
,uint64_t> sseqmap
;
5244 C_MDC_RejoinSessionsOpened(MDCache
*c
, map
<client_t
,entity_inst_t
>& cm
) :
5245 MDCacheLogContext(c
), client_map(cm
) {}
5246 void finish(int r
) override
{
5248 mdcache
->rejoin_open_sessions_finish(client_map
, sseqmap
);
5252 void MDCache::rejoin_open_sessions_finish(map
<client_t
,entity_inst_t
> client_map
,
5253 map
<client_t
,uint64_t>& sseqmap
)
5255 dout(10) << "rejoin_open_sessions_finish" << dendl
;
5256 mds
->server
->finish_force_open_sessions(client_map
, sseqmap
);
5257 if (rejoin_gather
.empty())
5258 rejoin_gather_finish();
5261 bool MDCache::process_imported_caps()
5263 dout(10) << "process_imported_caps" << dendl
;
5265 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5266 CInode
*in
= get_inode(p
->first
);
5268 assert(in
->is_auth());
5269 cap_imports_missing
.erase(p
->first
);
5272 if (cap_imports_missing
.count(p
->first
) > 0)
5275 cap_imports_num_opening
++;
5276 dout(10) << " opening missing ino " << p
->first
<< dendl
;
5277 open_ino(p
->first
, (int64_t)-1, new C_MDC_RejoinOpenInoFinish(this, p
->first
), false);
5280 if (cap_imports_num_opening
> 0)
5283 // called by rejoin_gather_finish() ?
5284 if (rejoin_gather
.count(mds
->get_nodeid()) == 0) {
5285 // if sessions for imported caps are all open ?
5286 for (map
<client_t
,entity_inst_t
>::iterator p
= rejoin_client_map
.begin();
5287 p
!= rejoin_client_map
.end();
5289 if (!mds
->sessionmap
.have_session(entity_name_t::CLIENT(p
->first
.v
))) {
5290 C_MDC_RejoinSessionsOpened
*finish
= new C_MDC_RejoinSessionsOpened(this, rejoin_client_map
);
5291 version_t pv
= mds
->server
->prepare_force_open_sessions(rejoin_client_map
, finish
->sseqmap
);
5292 ESessions
*le
= new ESessions(pv
, rejoin_client_map
);
5293 mds
->mdlog
->start_submit_entry(le
, finish
);
5294 mds
->mdlog
->flush();
5295 rejoin_client_map
.clear();
5299 rejoin_client_map
.clear();
5301 // process caps that were exported by slave rename
5302 for (map
<inodeno_t
,pair
<mds_rank_t
,map
<client_t
,Capability::Export
> > >::iterator p
= rejoin_slave_exports
.begin();
5303 p
!= rejoin_slave_exports
.end();
5305 CInode
*in
= get_inode(p
->first
);
5307 for (map
<client_t
,Capability::Export
>::iterator q
= p
->second
.second
.begin();
5308 q
!= p
->second
.second
.end();
5310 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5313 Capability
*cap
= in
->get_client_cap(q
->first
);
5315 cap
= in
->add_client_cap(q
->first
, session
);
5316 cap
->merge(q
->second
, true);
5318 Capability::Import
& im
= rejoin_imported_caps
[p
->second
.first
][p
->first
][q
->first
];
5319 assert(cap
->get_last_seq() == im
.issue_seq
);
5320 assert(cap
->get_mseq() == im
.mseq
);
5321 cap
->set_cap_id(im
.cap_id
);
5322 // send cap import because we assigned a new cap ID
5323 do_cap_import(session
, in
, cap
, q
->second
.cap_id
, q
->second
.seq
, q
->second
.mseq
- 1,
5324 p
->second
.first
, CEPH_CAP_FLAG_AUTH
);
5327 rejoin_slave_exports
.clear();
5328 rejoin_imported_caps
.clear();
5330 // process cap imports
5331 // ino -> client -> frommds -> capex
5332 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ) {
5333 CInode
*in
= get_inode(p
->first
);
5335 dout(10) << " still missing ino " << p
->first
5336 << ", will try again after replayed client requests" << dendl
;
5340 assert(in
->is_auth());
5341 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5342 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5344 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5345 Capability
*cap
= in
->reconnect_cap(q
->first
, r
->second
, session
);
5346 add_reconnected_cap(q
->first
, in
->ino(), r
->second
);
5347 if (r
->first
>= 0) {
5348 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5350 do_cap_import(session
, in
, cap
, r
->second
.capinfo
.cap_id
, 0, 0, r
->first
, 0);
5352 Capability::Import
& im
= rejoin_imported_caps
[r
->first
][p
->first
][q
->first
];
5353 im
.cap_id
= cap
->get_cap_id();
5354 im
.issue_seq
= cap
->get_last_seq();
5355 im
.mseq
= cap
->get_mseq();
5359 cap_imports
.erase(p
++); // remove and move on
5364 rejoin_gather
.erase(mds
->get_nodeid());
5365 maybe_send_pending_rejoins();
5367 if (rejoin_gather
.empty() && rejoin_ack_gather
.count(mds
->get_nodeid()))
5368 rejoin_gather_finish();
5373 void MDCache::check_realm_past_parents(SnapRealm
*realm
, bool reconnect
)
5375 // are this realm's parents fully open?
5376 if (realm
->have_past_parents_open()) {
5377 dout(10) << " have past snap parents for realm " << *realm
5378 << " on " << *realm
->inode
<< dendl
;
5380 // finish off client snaprealm reconnects?
5381 auto p
= reconnected_snaprealms
.find(realm
->inode
->ino());
5382 if (p
!= reconnected_snaprealms
.end()) {
5383 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
)
5384 finish_snaprealm_reconnect(q
->first
, realm
, q
->second
);
5385 reconnected_snaprealms
.erase(p
);
5389 if (!missing_snap_parents
.count(realm
->inode
)) {
5390 dout(10) << " MISSING past snap parents for realm " << *realm
5391 << " on " << *realm
->inode
<< dendl
;
5392 realm
->inode
->get(CInode::PIN_OPENINGSNAPPARENTS
);
5393 missing_snap_parents
[realm
->inode
].size(); // just to get it into the map!
5395 dout(10) << " (already) MISSING past snap parents for realm " << *realm
5396 << " on " << *realm
->inode
<< dendl
;
5401 void MDCache::rebuild_need_snapflush(CInode
*head_in
, SnapRealm
*realm
,
5402 client_t client
, snapid_t snap_follows
)
5404 dout(10) << "rebuild_need_snapflush " << snap_follows
<< " on " << *head_in
<< dendl
;
5406 const set
<snapid_t
>& snaps
= realm
->get_snaps();
5407 snapid_t follows
= snap_follows
;
5410 CInode
*in
= pick_inode_snap(head_in
, follows
);
5413 dout(10) << " need snapflush from client." << client
<< " on " << *in
<< dendl
;
5415 /* TODO: we can check the reconnected/flushing caps to find
5416 * which locks need gathering */
5417 for (int i
= 0; i
< num_cinode_locks
; i
++) {
5418 int lockid
= cinode_lock_info
[i
].lock
;
5419 SimpleLock
*lock
= in
->get_lock(lockid
);
5421 in
->client_snap_caps
[lockid
].insert(client
);
5423 lock
->set_state(LOCK_SNAP_SYNC
);
5424 lock
->get_wrlock(true);
5427 for (auto p
= snaps
.lower_bound(in
->first
);
5428 p
!= snaps
.end() && *p
<= in
->last
;
5430 head_in
->add_need_snapflush(in
, *p
, client
);
5438 * choose lock states based on reconnected caps
5440 void MDCache::choose_lock_states_and_reconnect_caps()
5442 dout(10) << "choose_lock_states_and_reconnect_caps" << dendl
;
5444 map
<client_t
,MClientSnap
*> splits
;
5446 for (auto i
: inode_map
) {
5447 CInode
*in
= i
.second
;
5449 if (in
->last
!= CEPH_NOSNAP
)
5452 if (in
->is_auth() && !in
->is_base() && in
->inode
.is_dirty_rstat())
5453 in
->mark_dirty_rstat();
5456 auto p
= reconnected_caps
.find(in
->ino());
5457 if (p
!= reconnected_caps
.end()) {
5458 for (const auto &it
: p
->second
)
5459 dirty_caps
|= it
.second
.dirty_caps
;
5461 in
->choose_lock_states(dirty_caps
);
5462 dout(15) << " chose lock states on " << *in
<< dendl
;
5464 SnapRealm
*realm
= in
->find_snaprealm();
5466 check_realm_past_parents(realm
, realm
== in
->snaprealm
);
5468 if (p
!= reconnected_caps
.end()) {
5469 bool missing_snap_parent
= false;
5470 // also, make sure client's cap is in the correct snaprealm.
5471 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5472 if (q
->second
.snap_follows
> 0 && q
->second
.snap_follows
< in
->first
- 1) {
5473 if (realm
->have_past_parents_open()) {
5474 rebuild_need_snapflush(in
, realm
, q
->first
, q
->second
.snap_follows
);
5476 missing_snap_parent
= true;
5480 if (q
->second
.realm_ino
== realm
->inode
->ino()) {
5481 dout(15) << " client." << q
->first
<< " has correct realm " << q
->second
.realm_ino
<< dendl
;
5483 dout(15) << " client." << q
->first
<< " has wrong realm " << q
->second
.realm_ino
5484 << " != " << realm
->inode
->ino() << dendl
;
5485 if (realm
->have_past_parents_open()) {
5486 // ok, include in a split message _now_.
5487 prepare_realm_split(realm
, q
->first
, in
->ino(), splits
);
5489 // send the split later.
5490 missing_snap_parent
= true;
5494 if (missing_snap_parent
)
5495 missing_snap_parents
[realm
->inode
].insert(in
);
5502 void MDCache::prepare_realm_split(SnapRealm
*realm
, client_t client
, inodeno_t ino
,
5503 map
<client_t
,MClientSnap
*>& splits
)
5506 if (splits
.count(client
) == 0) {
5507 splits
[client
] = snap
= new MClientSnap(CEPH_SNAP_OP_SPLIT
);
5508 snap
->head
.split
= realm
->inode
->ino();
5509 realm
->build_snap_trace(snap
->bl
);
5511 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
5512 p
!= realm
->open_children
.end();
5514 snap
->split_realms
.push_back((*p
)->inode
->ino());
5517 snap
= splits
[client
];
5518 snap
->split_inos
.push_back(ino
);
5521 void MDCache::send_snaps(map
<client_t
,MClientSnap
*>& splits
)
5523 dout(10) << "send_snaps" << dendl
;
5525 for (map
<client_t
,MClientSnap
*>::iterator p
= splits
.begin();
5528 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->first
.v
));
5530 dout(10) << " client." << p
->first
5531 << " split " << p
->second
->head
.split
5532 << " inos " << p
->second
->split_inos
5534 mds
->send_message_client_counted(p
->second
, session
);
5536 dout(10) << " no session for client." << p
->first
<< dendl
;
5545 * remove any items from logsegment open_file lists that don't have
5548 void MDCache::clean_open_file_lists()
5550 dout(10) << "clean_open_file_lists" << dendl
;
5552 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
5553 p
!= mds
->mdlog
->segments
.end();
5555 LogSegment
*ls
= p
->second
;
5557 elist
<CInode
*>::iterator q
= ls
->open_files
.begin(member_offset(CInode
, item_open_file
));
5561 if (in
->last
== CEPH_NOSNAP
) {
5562 if (!in
->is_any_caps_wanted()) {
5563 dout(10) << " unlisting unwanted/capless inode " << *in
<< dendl
;
5564 in
->item_open_file
.remove_myself();
5566 } else if (in
->last
!= CEPH_NOSNAP
) {
5567 if (in
->client_snap_caps
.empty()) {
5568 dout(10) << " unlisting flushed snap inode " << *in
<< dendl
;
5569 in
->item_open_file
.remove_myself();
5578 Capability
* MDCache::rejoin_import_cap(CInode
*in
, client_t client
, const cap_reconnect_t
& icr
, mds_rank_t frommds
)
5580 dout(10) << "rejoin_import_cap for client." << client
<< " from mds." << frommds
5581 << " on " << *in
<< dendl
;
5582 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5584 dout(10) << " no session for client." << client
<< dendl
;
5588 Capability
*cap
= in
->reconnect_cap(client
, icr
, session
);
5591 if (cap
->get_last_seq() == 0) // don't increase mseq if cap already exists
5593 do_cap_import(session
, in
, cap
, icr
.capinfo
.cap_id
, 0, 0, frommds
, 0);
5599 void MDCache::export_remaining_imported_caps()
5601 dout(10) << "export_remaining_imported_caps" << dendl
;
5603 stringstream warn_str
;
5605 for (auto p
= cap_imports
.begin(); p
!= cap_imports
.end(); ++p
) {
5606 warn_str
<< " ino " << p
->first
<< "\n";
5607 for (auto q
= p
->second
.begin(); q
!= p
->second
.end(); ++q
) {
5608 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(q
->first
.v
));
5610 // mark client caps stale.
5611 MClientCaps
*stale
= new MClientCaps(CEPH_CAP_OP_EXPORT
, p
->first
, 0, 0, 0, mds
->get_osd_epoch_barrier());
5612 stale
->set_cap_peer(0, 0, 0, -1, 0);
5613 mds
->send_message_client_counted(stale
, q
->first
);
5617 mds
->heartbeat_reset();
5620 for (map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator p
= cap_reconnect_waiters
.begin();
5621 p
!= cap_reconnect_waiters
.end();
5623 mds
->queue_waiters(p
->second
);
5625 cap_imports
.clear();
5626 cap_reconnect_waiters
.clear();
5628 if (warn_str
.peek() != EOF
) {
5629 mds
->clog
->warn() << "failed to reconnect caps for missing inodes:";
5630 mds
->clog
->warn(warn_str
);
5634 void MDCache::try_reconnect_cap(CInode
*in
, Session
*session
)
5636 client_t client
= session
->info
.get_client();
5637 const cap_reconnect_t
*rc
= get_replay_cap_reconnect(in
->ino(), client
);
5639 in
->reconnect_cap(client
, *rc
, session
);
5640 dout(10) << "try_reconnect_cap client." << client
5641 << " reconnect wanted " << ccap_string(rc
->capinfo
.wanted
)
5642 << " issue " << ccap_string(rc
->capinfo
.issued
)
5643 << " on " << *in
<< dendl
;
5644 remove_replay_cap_reconnect(in
->ino(), client
);
5646 if (in
->is_replicated()) {
5647 mds
->locker
->try_eval(in
, CEPH_CAP_LOCKS
);
5650 auto p
= reconnected_caps
.find(in
->ino());
5651 if (p
!= reconnected_caps
.end()) {
5652 auto q
= p
->second
.find(client
);
5653 if (q
!= p
->second
.end())
5654 dirty_caps
= q
->second
.dirty_caps
;
5656 in
->choose_lock_states(dirty_caps
);
5657 dout(15) << " chose lock states on " << *in
<< dendl
;
5660 map
<inodeno_t
, list
<MDSInternalContextBase
*> >::iterator it
=
5661 cap_reconnect_waiters
.find(in
->ino());
5662 if (it
!= cap_reconnect_waiters
.end()) {
5663 mds
->queue_waiters(it
->second
);
5664 cap_reconnect_waiters
.erase(it
);
5672 // cap imports and delayed snap parent opens
5674 void MDCache::do_cap_import(Session
*session
, CInode
*in
, Capability
*cap
,
5675 uint64_t p_cap_id
, ceph_seq_t p_seq
, ceph_seq_t p_mseq
,
5676 int peer
, int p_flags
)
5678 client_t client
= session
->info
.inst
.name
.num();
5679 SnapRealm
*realm
= in
->find_snaprealm();
5680 if (realm
->have_past_parents_open()) {
5681 dout(10) << "do_cap_import " << session
->info
.inst
.name
<< " mseq " << cap
->get_mseq() << " on " << *in
<< dendl
;
5682 if (cap
->get_last_seq() == 0) // reconnected cap
5683 cap
->inc_last_seq();
5684 cap
->set_last_issue();
5685 cap
->set_last_issue_stamp(ceph_clock_now());
5687 MClientCaps
*reap
= new MClientCaps(CEPH_CAP_OP_IMPORT
,
5689 realm
->inode
->ino(),
5690 cap
->get_cap_id(), cap
->get_last_seq(),
5691 cap
->pending(), cap
->wanted(), 0,
5692 cap
->get_mseq(), mds
->get_osd_epoch_barrier());
5693 in
->encode_cap_message(reap
, cap
);
5694 realm
->build_snap_trace(reap
->snapbl
);
5695 reap
->set_cap_peer(p_cap_id
, p_seq
, p_mseq
, peer
, p_flags
);
5696 mds
->send_message_client_counted(reap
, session
);
5698 dout(10) << "do_cap_import missing past snap parents, delaying " << session
->info
.inst
.name
<< " mseq "
5699 << cap
->get_mseq() << " on " << *in
<< dendl
;
5701 cap
->inc_suppress();
5702 delayed_imported_caps
[client
].insert(in
);
5703 missing_snap_parents
[in
].size();
5707 void MDCache::do_delayed_cap_imports()
5709 dout(10) << "do_delayed_cap_imports" << dendl
;
5711 assert(delayed_imported_caps
.empty());
5714 struct C_MDC_OpenSnapParents
: public MDCacheContext
{
5715 explicit C_MDC_OpenSnapParents(MDCache
*c
) : MDCacheContext(c
) {}
5716 void finish(int r
) override
{
5717 mdcache
->open_snap_parents();
5721 void MDCache::open_snap_parents()
5723 dout(10) << "open_snap_parents" << dendl
;
5725 map
<client_t
,MClientSnap
*> splits
;
5726 MDSGatherBuilder
gather(g_ceph_context
);
5728 auto p
= missing_snap_parents
.begin();
5729 while (p
!= missing_snap_parents
.end()) {
5730 CInode
*in
= p
->first
;
5731 assert(in
->snaprealm
);
5732 if (in
->snaprealm
->open_parents(gather
.new_sub())) {
5733 dout(10) << " past parents now open on " << *in
<< dendl
;
5735 for (CInode
*child
: p
->second
) {
5736 auto q
= reconnected_caps
.find(child
->ino());
5737 assert(q
!= reconnected_caps
.end());
5738 for (auto r
= q
->second
.begin(); r
!= q
->second
.end(); ++r
) {
5739 if (r
->second
.snap_follows
> 0 && r
->second
.snap_follows
< in
->first
- 1) {
5740 rebuild_need_snapflush(child
, in
->snaprealm
, r
->first
, r
->second
.snap_follows
);
5742 // make sure client's cap is in the correct snaprealm.
5743 if (r
->second
.realm_ino
!= in
->ino()) {
5744 prepare_realm_split(in
->snaprealm
, r
->first
, child
->ino(), splits
);
5749 missing_snap_parents
.erase(p
++);
5751 in
->put(CInode::PIN_OPENINGSNAPPARENTS
);
5753 // finish off client snaprealm reconnects?
5754 map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator q
= reconnected_snaprealms
.find(in
->ino());
5755 if (q
!= reconnected_snaprealms
.end()) {
5756 for (map
<client_t
,snapid_t
>::iterator r
= q
->second
.begin();
5757 r
!= q
->second
.end();
5759 finish_snaprealm_reconnect(r
->first
, in
->snaprealm
, r
->second
);
5760 reconnected_snaprealms
.erase(q
);
5763 dout(10) << " opening past parents on " << *in
<< dendl
;
5770 if (gather
.has_subs()) {
5771 dout(10) << "open_snap_parents - waiting for "
5772 << gather
.num_subs_remaining() << dendl
;
5773 gather
.set_finisher(new C_MDC_OpenSnapParents(this));
5776 if (!reconnected_snaprealms
.empty()) {
5777 stringstream warn_str
;
5778 for (map
<inodeno_t
,map
<client_t
,snapid_t
> >::iterator p
= reconnected_snaprealms
.begin();
5779 p
!= reconnected_snaprealms
.end();
5781 warn_str
<< " unconnected snaprealm " << p
->first
<< "\n";
5782 for (map
<client_t
,snapid_t
>::iterator q
= p
->second
.begin();
5783 q
!= p
->second
.end();
5785 warn_str
<< " client." << q
->first
<< " snapid " << q
->second
<< "\n";
5787 mds
->clog
->warn() << "open_snap_parents has:";
5788 mds
->clog
->warn(warn_str
);
5790 assert(rejoin_waiters
.empty());
5791 assert(missing_snap_parents
.empty());
5792 dout(10) << "open_snap_parents - all open" << dendl
;
5793 do_delayed_cap_imports();
5795 assert(rejoin_done
);
5796 rejoin_done
.release()->complete(0);
5797 reconnected_caps
.clear();
5801 bool MDCache::open_undef_inodes_dirfrags()
5803 dout(10) << "open_undef_inodes_dirfrags "
5804 << rejoin_undef_inodes
.size() << " inodes "
5805 << rejoin_undef_dirfrags
.size() << " dirfrags" << dendl
;
5807 set
<CDir
*> fetch_queue
= rejoin_undef_dirfrags
;
5809 for (set
<CInode
*>::iterator p
= rejoin_undef_inodes
.begin();
5810 p
!= rejoin_undef_inodes
.end();
5813 assert(!in
->is_base());
5814 fetch_queue
.insert(in
->get_parent_dir());
5817 if (fetch_queue
.empty())
5820 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_RejoinGatherFinish(this));
5821 for (set
<CDir
*>::iterator p
= fetch_queue
.begin();
5822 p
!= fetch_queue
.end();
5825 CInode
*diri
= dir
->get_inode();
5826 if (diri
->state_test(CInode::STATE_REJOINUNDEF
))
5828 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
5829 assert(diri
->dirfragtree
.is_leaf(dir
->get_frag()));
5830 dir
->fetch(gather
.new_sub());
5832 assert(gather
.has_subs());
5837 void MDCache::opened_undef_inode(CInode
*in
) {
5838 dout(10) << "opened_undef_inode " << *in
<< dendl
;
5839 rejoin_undef_inodes
.erase(in
);
5841 // FIXME: re-hash dentries if necessary
5842 assert(in
->inode
.dir_layout
.dl_dir_hash
== g_conf
->mds_default_dir_hash
);
5843 if (in
->has_dirfrags() && !in
->dirfragtree
.is_leaf(frag_t())) {
5844 CDir
*dir
= in
->get_dirfrag(frag_t());
5846 rejoin_undef_dirfrags
.erase(dir
);
5847 in
->force_dirfrags();
5849 in
->get_dirfrags(ls
);
5850 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
)
5851 rejoin_undef_dirfrags
.insert(*p
);
5856 void MDCache::finish_snaprealm_reconnect(client_t client
, SnapRealm
*realm
, snapid_t seq
)
5858 if (seq
< realm
->get_newest_seq()) {
5859 dout(10) << "finish_snaprealm_reconnect client." << client
<< " has old seq " << seq
<< " < "
5860 << realm
->get_newest_seq()
5861 << " on " << *realm
<< dendl
;
5863 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(client
.v
));
5865 MClientSnap
*snap
= new MClientSnap(CEPH_SNAP_OP_UPDATE
);
5866 realm
->build_snap_trace(snap
->bl
);
5867 mds
->send_message_client_counted(snap
, session
);
5869 dout(10) << " ...or not, no session for this client!" << dendl
;
5872 dout(10) << "finish_snaprealm_reconnect client." << client
<< " up to date"
5873 << " on " << *realm
<< dendl
;
5879 void MDCache::rejoin_send_acks()
5881 dout(7) << "rejoin_send_acks" << dendl
;
5884 for (map
<mds_rank_t
, set
<CInode
*> >::iterator p
= rejoin_unlinked_inodes
.begin();
5885 p
!= rejoin_unlinked_inodes
.end();
5887 for (set
<CInode
*>::iterator q
= p
->second
.begin();
5888 q
!= p
->second
.end();
5891 dout(7) << " unlinked inode " << *in
<< dendl
;
5893 if (!in
->is_replica(p
->first
))
5896 CDentry
*dn
= in
->get_parent_dn();
5897 if (dn
->is_replica(p
->first
))
5899 dn
->add_replica(p
->first
);
5900 CDir
*dir
= dn
->get_dir();
5901 if (dir
->is_replica(p
->first
))
5903 dir
->add_replica(p
->first
);
5904 in
= dir
->get_inode();
5905 if (in
->is_replica(p
->first
))
5907 in
->add_replica(p
->first
);
5913 rejoin_unlinked_inodes
.clear();
5915 // send acks to everyone in the recovery set
5916 map
<mds_rank_t
,MMDSCacheRejoin
*> acks
;
5917 for (set
<mds_rank_t
>::iterator p
= recovery_set
.begin();
5918 p
!= recovery_set
.end();
5920 if (rejoin_ack_sent
.count(*p
))
5922 acks
[*p
] = new MMDSCacheRejoin(MMDSCacheRejoin::OP_ACK
);
5925 rejoin_ack_sent
= recovery_set
;
5928 for (map
<CDir
*,set
<CDir
*> >::iterator p
= subtrees
.begin();
5929 p
!= subtrees
.end();
5931 CDir
*dir
= p
->first
;
5932 if (!dir
->is_auth())
5934 dout(10) << "subtree " << *dir
<< dendl
;
5936 // auth items in this subtree
5940 while (!dq
.empty()) {
5941 CDir
*dir
= dq
.front();
5945 for (auto &r
: dir
->get_replicas()) {
5946 auto it
= acks
.find(r
.first
);
5947 if (it
== acks
.end())
5949 it
->second
->add_strong_dirfrag(dir
->dirfrag(), ++r
.second
, dir
->dir_rep
);
5950 it
->second
->add_dirfrag_base(dir
);
5953 for (auto &p
: dir
->items
) {
5954 CDentry
*dn
= p
.second
;
5955 CDentry::linkage_t
*dnl
= dn
->get_linkage();
5959 if (dnl
->is_primary())
5960 in
= dnl
->get_inode();
5963 for (auto &r
: dn
->get_replicas()) {
5964 auto it
= acks
.find(r
.first
);
5965 if (it
== acks
.end())
5967 it
->second
->add_strong_dentry(dir
->dirfrag(), dn
->get_name(), dn
->first
, dn
->last
,
5968 dnl
->is_primary() ? dnl
->get_inode()->ino():inodeno_t(0),
5969 dnl
->is_remote() ? dnl
->get_remote_ino():inodeno_t(0),
5970 dnl
->is_remote() ? dnl
->get_remote_d_type():0,
5972 dn
->lock
.get_replica_state());
5973 // peer missed MDentrylink message ?
5974 if (in
&& !in
->is_replica(r
.first
))
5975 in
->add_replica(r
.first
);
5981 for (auto &r
: in
->get_replicas()) {
5982 auto it
= acks
.find(r
.first
);
5983 if (it
== acks
.end())
5985 it
->second
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
5987 in
->_encode_locks_state_for_rejoin(bl
, r
.first
);
5988 it
->second
->add_inode_locks(in
, ++r
.second
, bl
);
5991 // subdirs in this subtree?
5992 in
->get_nested_dirfrags(dq
);
5998 if (root
&& root
->is_auth())
5999 for (auto &r
: root
->get_replicas()) {
6000 auto it
= acks
.find(r
.first
);
6001 if (it
== acks
.end())
6003 it
->second
->add_inode_base(root
, mds
->mdsmap
->get_up_features());
6005 root
->_encode_locks_state_for_rejoin(bl
, r
.first
);
6006 it
->second
->add_inode_locks(root
, ++r
.second
, bl
);
6009 for (auto &r
: myin
->get_replicas()) {
6010 auto it
= acks
.find(r
.first
);
6011 if (it
== acks
.end())
6013 it
->second
->add_inode_base(myin
, mds
->mdsmap
->get_up_features());
6015 myin
->_encode_locks_state_for_rejoin(bl
, r
.first
);
6016 it
->second
->add_inode_locks(myin
, ++r
.second
, bl
);
6019 // include inode base for any inodes whose scatterlocks may have updated
6020 for (set
<CInode
*>::iterator p
= rejoin_potential_updated_scatterlocks
.begin();
6021 p
!= rejoin_potential_updated_scatterlocks
.end();
6024 for (const auto &r
: in
->get_replicas()) {
6025 auto it
= acks
.find(r
.first
);
6026 if (it
== acks
.end())
6028 it
->second
->add_inode_base(in
, mds
->mdsmap
->get_up_features());
6033 for (auto p
= acks
.begin(); p
!= acks
.end(); ++p
) {
6034 ::encode(rejoin_imported_caps
[p
->first
], p
->second
->imported_caps
);
6035 mds
->send_message_mds(p
->second
, p
->first
);
6038 rejoin_imported_caps
.clear();
6041 class C_MDC_ReIssueCaps
: public MDCacheContext
{
6044 C_MDC_ReIssueCaps(MDCache
*mdc
, CInode
*i
) :
6045 MDCacheContext(mdc
), in(i
)
6047 in
->get(CInode::PIN_PTRWAITER
);
6049 void finish(int r
) override
{
6050 if (!mdcache
->mds
->locker
->eval(in
, CEPH_CAP_LOCKS
))
6051 mdcache
->mds
->locker
->issue_caps(in
);
6052 in
->put(CInode::PIN_PTRWAITER
);
6056 void MDCache::reissue_all_caps()
6058 dout(10) << "reissue_all_caps" << dendl
;
6060 for (auto &p
: inode_map
) {
6061 CInode
*in
= p
.second
;
6062 if (in
->is_head() && in
->is_any_caps()) {
6063 // called by MDSRank::active_start(). There shouldn't be any frozen subtree.
6064 if (in
->is_frozen_inode()) {
6065 in
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDC_ReIssueCaps(this, in
));
6068 if (!mds
->locker
->eval(in
, CEPH_CAP_LOCKS
))
6069 mds
->locker
->issue_caps(in
);
6075 // ===============================================================================
6077 struct C_MDC_QueuedCow
: public MDCacheContext
{
6080 C_MDC_QueuedCow(MDCache
*mdc
, CInode
*i
, MutationRef
& m
) :
6081 MDCacheContext(mdc
), in(i
), mut(m
) {}
6082 void finish(int r
) override
{
6083 mdcache
->_queued_file_recover_cow(in
, mut
);
6088 void MDCache::queue_file_recover(CInode
*in
)
6090 dout(10) << "queue_file_recover " << *in
<< dendl
;
6091 assert(in
->is_auth());
6095 SnapRealm *realm = in->find_snaprealm();
6096 set<snapid_t> s = realm->get_snaps();
6097 while (!s.empty() && *s.begin() < in->first)
6099 while (!s.empty() && *s.rbegin() > in->last)
6100 s.erase(*s.rbegin());
6101 dout(10) << " snaps in [" << in->first << "," << in->last << "] are " << s << dendl;
6103 CInode::mempool_inode pi = in->project_inode();
6104 pi->version = in->pre_dirty();
6106 auto mut(std::make_shared<MutationImpl>());
6107 mut->ls = mds->mdlog->get_current_segment();
6108 EUpdate *le = new EUpdate(mds->mdlog, "queue_file_recover cow");
6109 mds->mdlog->start_entry(le);
6110 predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY);
6112 s.erase(*s.begin());
6113 while (!s.empty()) {
6114 snapid_t snapid = *s.begin();
6115 CInode *cow_inode = 0;
6116 journal_cow_inode(mut, &le->metablob, in, snapid-1, &cow_inode);
6118 recovery_queue.enqueue(cow_inode);
6119 s.erase(*s.begin());
6122 in->parent->first = in->first;
6123 le->metablob.add_primary_dentry(in->parent, in, true);
6124 mds->mdlog->submit_entry(le, new C_MDC_QueuedCow(this, in, mut));
6125 mds->mdlog->flush();
6129 recovery_queue
.enqueue(in
);
6132 void MDCache::_queued_file_recover_cow(CInode
*in
, MutationRef
& mut
)
6134 in
->pop_and_dirty_projected_inode(mut
->ls
);
6136 mds
->locker
->drop_locks(mut
.get());
6142 * called after recovery to recover file sizes for previously opened (for write)
6143 * files. that is, those where max_size > size.
6145 void MDCache::identify_files_to_recover()
6147 dout(10) << "identify_files_to_recover" << dendl
;
6148 for (auto &p
: inode_map
) {
6149 CInode
*in
= p
.second
;
6153 if (in
->last
!= CEPH_NOSNAP
)
6156 // Only normal files need file size recovery
6157 if (!in
->is_file()) {
6161 bool recover
= false;
6162 for (map
<client_t
,client_writeable_range_t
>::iterator p
= in
->inode
.client_ranges
.begin();
6163 p
!= in
->inode
.client_ranges
.end();
6165 Capability
*cap
= in
->get_client_cap(p
->first
);
6167 dout(10) << " client." << p
->first
<< " has range " << p
->second
<< " but no cap on " << *in
<< dendl
;
6174 if (in
->filelock
.is_stable()) {
6175 in
->auth_pin(&in
->filelock
);
6177 assert(in
->filelock
.get_state() == LOCK_XLOCKSNAP
);
6179 in
->filelock
.set_state(LOCK_PRE_SCAN
);
6180 rejoin_recover_q
.push_back(in
);
6182 rejoin_check_q
.push_back(in
);
6187 void MDCache::start_files_to_recover()
6189 for (CInode
*in
: rejoin_check_q
) {
6190 if (in
->filelock
.get_state() == LOCK_XLOCKSNAP
)
6191 mds
->locker
->issue_caps(in
);
6192 mds
->locker
->check_inode_max_size(in
);
6194 rejoin_check_q
.clear();
6195 for (CInode
*in
: rejoin_recover_q
) {
6196 mds
->locker
->file_recover(&in
->filelock
);
6198 if (!rejoin_recover_q
.empty()) {
6199 rejoin_recover_q
.clear();
6204 void MDCache::do_file_recover()
6206 recovery_queue
.advance();
6209 // ===============================================================================
6212 // ----------------------------
6215 class C_MDC_RetryTruncate
: public MDCacheContext
{
6219 C_MDC_RetryTruncate(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6220 MDCacheContext(c
), in(i
), ls(l
) {}
6221 void finish(int r
) override
{
6222 mdcache
->_truncate_inode(in
, ls
);
6226 void MDCache::truncate_inode(CInode
*in
, LogSegment
*ls
)
6228 auto pi
= in
->get_projected_inode();
6229 dout(10) << "truncate_inode "
6230 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6234 ls
->truncating_inodes
.insert(in
);
6235 in
->get(CInode::PIN_TRUNCATING
);
6238 if (!in
->client_need_snapflush
.empty() &&
6239 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6240 assert(in
->filelock
.is_xlocked());
6241 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6242 mds
->locker
->issue_caps(in
);
6246 _truncate_inode(in
, ls
);
6249 struct C_IO_MDC_TruncateFinish
: public MDCacheIOContext
{
6252 C_IO_MDC_TruncateFinish(MDCache
*c
, CInode
*i
, LogSegment
*l
) :
6253 MDCacheIOContext(c
), in(i
), ls(l
) {}
6254 void finish(int r
) override
{
6255 assert(r
== 0 || r
== -ENOENT
);
6256 mdcache
->truncate_inode_finish(in
, ls
);
6260 void MDCache::_truncate_inode(CInode
*in
, LogSegment
*ls
)
6262 auto pi
= &in
->inode
;
6263 dout(10) << "_truncate_inode "
6264 << pi
->truncate_from
<< " -> " << pi
->truncate_size
6265 << " on " << *in
<< dendl
;
6267 assert(pi
->is_truncating());
6268 assert(pi
->truncate_size
< (1ULL << 63));
6269 assert(pi
->truncate_from
< (1ULL << 63));
6270 assert(pi
->truncate_size
< pi
->truncate_from
);
6273 SnapRealm
*realm
= in
->find_snaprealm();
6274 SnapContext nullsnap
;
6275 const SnapContext
*snapc
;
6277 dout(10) << " realm " << *realm
<< dendl
;
6278 snapc
= &realm
->get_snap_context();
6280 dout(10) << " NO realm, using null context" << dendl
;
6282 assert(in
->last
== CEPH_NOSNAP
);
6284 dout(10) << "_truncate_inode snapc " << snapc
<< " on " << *in
<< dendl
;
6285 filer
.truncate(in
->inode
.ino
, &in
->inode
.layout
, *snapc
,
6286 pi
->truncate_size
, pi
->truncate_from
-pi
->truncate_size
,
6287 pi
->truncate_seq
, ceph::real_time::min(), 0,
6288 new C_OnFinisher(new C_IO_MDC_TruncateFinish(this, in
, ls
),
6292 struct C_MDC_TruncateLogged
: public MDCacheLogContext
{
6295 C_MDC_TruncateLogged(MDCache
*m
, CInode
*i
, MutationRef
& mu
) :
6296 MDCacheLogContext(m
), in(i
), mut(mu
) {}
6297 void finish(int r
) override
{
6298 mdcache
->truncate_inode_logged(in
, mut
);
6302 void MDCache::truncate_inode_finish(CInode
*in
, LogSegment
*ls
)
6304 dout(10) << "truncate_inode_finish " << *in
<< dendl
;
6306 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6307 assert(p
!= ls
->truncating_inodes
.end());
6308 ls
->truncating_inodes
.erase(p
);
6311 auto &pi
= in
->project_inode();
6312 pi
.inode
.version
= in
->pre_dirty();
6313 pi
.inode
.truncate_from
= 0;
6314 pi
.inode
.truncate_pending
--;
6316 MutationRef
mut(new MutationImpl());
6317 mut
->ls
= mds
->mdlog
->get_current_segment();
6318 mut
->add_projected_inode(in
);
6320 EUpdate
*le
= new EUpdate(mds
->mdlog
, "truncate finish");
6321 mds
->mdlog
->start_entry(le
);
6322 CDentry
*dn
= in
->get_projected_parent_dn();
6323 le
->metablob
.add_dir_context(dn
->get_dir());
6324 le
->metablob
.add_primary_dentry(dn
, in
, true);
6325 le
->metablob
.add_truncate_finish(in
->ino(), ls
->seq
);
6327 journal_dirty_inode(mut
.get(), &le
->metablob
, in
);
6328 mds
->mdlog
->submit_entry(le
, new C_MDC_TruncateLogged(this, in
, mut
));
6330 // flush immediately if there are readers/writers waiting
6331 if (in
->is_waiter_for(CInode::WAIT_TRUNC
) ||
6332 (in
->get_caps_wanted() & (CEPH_CAP_FILE_RD
|CEPH_CAP_FILE_WR
)))
6333 mds
->mdlog
->flush();
6336 void MDCache::truncate_inode_logged(CInode
*in
, MutationRef
& mut
)
6338 dout(10) << "truncate_inode_logged " << *in
<< dendl
;
6340 mds
->locker
->drop_locks(mut
.get());
6343 in
->put(CInode::PIN_TRUNCATING
);
6344 in
->auth_unpin(this);
6346 list
<MDSInternalContextBase
*> waiters
;
6347 in
->take_waiting(CInode::WAIT_TRUNC
, waiters
);
6348 mds
->queue_waiters(waiters
);
6352 void MDCache::add_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6354 dout(20) << "add_recovered_truncate " << *in
<< " in log segment "
6355 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6356 ls
->truncating_inodes
.insert(in
);
6357 in
->get(CInode::PIN_TRUNCATING
);
6360 void MDCache::remove_recovered_truncate(CInode
*in
, LogSegment
*ls
)
6362 dout(20) << "remove_recovered_truncate " << *in
<< " in log segment "
6363 << ls
->seq
<< "/" << ls
->offset
<< dendl
;
6364 // if we have the logseg the truncate started in, it must be in our list.
6365 set
<CInode
*>::iterator p
= ls
->truncating_inodes
.find(in
);
6366 assert(p
!= ls
->truncating_inodes
.end());
6367 ls
->truncating_inodes
.erase(p
);
6368 in
->put(CInode::PIN_TRUNCATING
);
6371 void MDCache::start_recovered_truncates()
6373 dout(10) << "start_recovered_truncates" << dendl
;
6374 for (map
<uint64_t,LogSegment
*>::iterator p
= mds
->mdlog
->segments
.begin();
6375 p
!= mds
->mdlog
->segments
.end();
6377 LogSegment
*ls
= p
->second
;
6378 for (set
<CInode
*>::iterator q
= ls
->truncating_inodes
.begin();
6379 q
!= ls
->truncating_inodes
.end();
6384 if (!in
->client_need_snapflush
.empty() &&
6385 (in
->get_caps_issued() & CEPH_CAP_FILE_BUFFER
)) {
6386 assert(in
->filelock
.is_stable());
6387 in
->filelock
.set_state(LOCK_XLOCKDONE
);
6388 in
->auth_pin(&in
->filelock
);
6389 in
->filelock
.set_xlock_snap_sync(new C_MDC_RetryTruncate(this, in
, ls
));
6390 // start_files_to_recover will revoke caps
6393 _truncate_inode(in
, ls
);
6403 // ================================================================================
6406 void MDCache::trim_lru(uint64_t count
, map
<mds_rank_t
, MCacheExpire
*> &expiremap
)
6408 bool is_standby_replay
= mds
->is_standby_replay();
6409 std::vector
<CDentry
*> unexpirables
;
6410 uint64_t trimmed
= 0;
6412 dout(7) << "trim_lru trimming " << count
6413 << " items from LRU"
6414 << " size=" << lru
.lru_get_size()
6415 << " mid=" << lru
.lru_get_top()
6416 << " pintail=" << lru
.lru_get_pintail()
6417 << " pinned=" << lru
.lru_get_num_pinned()
6421 CDentry
*dn
= static_cast<CDentry
*>(bottom_lru
.lru_expire());
6424 if (trim_dentry(dn
, expiremap
)) {
6425 unexpirables
.push_back(dn
);
6431 for (auto &dn
: unexpirables
) {
6432 bottom_lru
.lru_insert_mid(dn
);
6434 unexpirables
.clear();
6436 // trim dentries from the LRU until count is reached
6437 while (cache_toofull() || count
> 0) {
6438 CDentry
*dn
= static_cast<CDentry
*>(lru
.lru_expire());
6442 if ((is_standby_replay
&& dn
->get_linkage()->inode
&&
6443 dn
->get_linkage()->inode
->item_open_file
.is_on_list())) {
6444 unexpirables
.push_back(dn
);
6445 } else if (trim_dentry(dn
, expiremap
)) {
6446 unexpirables
.push_back(dn
);
6449 if (count
> 0) count
--;
6453 for (auto &dn
: unexpirables
) {
6454 lru
.lru_insert_mid(dn
);
6456 unexpirables
.clear();
6458 dout(7) << "trim_lru trimmed " << trimmed
<< " items" << dendl
;
6462 * note: only called while MDS is active or stopping... NOT during recovery.
6463 * however, we may expire a replica whose authority is recovering.
6465 * @param count is number of dentries to try to expire
6467 bool MDCache::trim(uint64_t count
)
6469 uint64_t used
= cache_size();
6470 uint64_t limit
= cache_limit_memory();
6471 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
6473 dout(7) << "trim bytes_used=" << bytes2str(used
)
6474 << " limit=" << bytes2str(limit
)
6475 << " reservation=" << cache_reservation()
6476 << "% count=" << count
<< dendl
;
6478 // process delayed eval_stray()
6479 stray_manager
.advance_delayed();
6481 trim_lru(count
, expiremap
);
6483 // trim non-auth, non-bound subtrees
6484 for (auto p
= subtrees
.begin(); p
!= subtrees
.end();) {
6485 CDir
*dir
= p
->first
;
6487 CInode
*diri
= dir
->get_inode();
6488 if (dir
->is_auth()) {
6489 if (!diri
->is_auth() && !diri
->is_base() &&
6490 dir
->get_num_head_items() == 0) {
6491 if (dir
->state_test(CDir::STATE_EXPORTING
) ||
6492 !(mds
->is_active() || mds
->is_stopping()) ||
6493 dir
->is_freezing() || dir
->is_frozen())
6496 migrator
->export_empty_import(dir
);
6499 if (!diri
->is_auth()) {
6500 if (dir
->get_num_ref() > 1) // only subtree pin
6503 diri
->get_subtree_dirfrags(ls
);
6504 if (diri
->get_num_ref() > (int)ls
.size()) // only pinned by subtrees
6507 // don't trim subtree root if its auth MDS is recovering.
6508 // This simplify the cache rejoin code.
6509 if (dir
->is_subtree_root() &&
6510 rejoin_ack_gather
.count(dir
->get_dir_auth().first
))
6512 trim_dirfrag(dir
, 0, expiremap
);
6518 if (mds
->is_stopping() && root
) {
6520 root
->get_dirfrags(ls
);
6521 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6523 if (dir
->get_num_ref() == 1) // subtree pin
6524 trim_dirfrag(dir
, 0, expiremap
);
6526 if (root
->get_num_ref() == 0)
6527 trim_inode(0, root
, 0, expiremap
);
6530 std::set
<mds_rank_t
> stopping
;
6531 mds
->mdsmap
->get_mds_set(stopping
, MDSMap::STATE_STOPPING
);
6532 stopping
.erase(mds
->get_nodeid());
6533 for (auto rank
: stopping
) {
6534 CInode
* mdsdir_in
= get_inode(MDS_INO_MDSDIR(rank
));
6538 if (expiremap
.count(rank
) == 0) {
6539 expiremap
[rank
] = new MCacheExpire(mds
->get_nodeid());
6542 dout(20) << __func__
<< ": try expiring " << *mdsdir_in
<< " for stopping mds." << mds
<< dendl
;
6544 const bool aborted
= expire_recursive(mdsdir_in
, expiremap
);
6546 dout(20) << __func__
<< ": successfully expired mdsdir" << dendl
;
6548 mdsdir_in
->get_dirfrags(ls
);
6549 for (auto dir
: ls
) {
6550 if (dir
->get_num_ref() == 1) // subtree pin
6551 trim_dirfrag(dir
, dir
, expiremap
);
6553 if (mdsdir_in
->get_num_ref() == 0)
6554 trim_inode(NULL
, mdsdir_in
, NULL
, expiremap
);
6556 dout(20) << __func__
<< ": some unexpirable contents in mdsdir" << dendl
;
6560 // Other rank's base inodes (when I'm stopping)
6561 if (mds
->is_stopping()) {
6562 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
6563 p
!= base_inodes
.end(); ++p
) {
6564 if (MDS_INO_MDSDIR_OWNER((*p
)->ino()) != mds
->get_nodeid()) {
6565 dout(20) << __func__
<< ": maybe trimming base: " << *(*p
) << dendl
;
6566 if ((*p
)->get_num_ref() == 0) {
6567 trim_inode(NULL
, *p
, NULL
, expiremap
);
6573 // send any expire messages
6574 send_expire_messages(expiremap
);
6579 void MDCache::send_expire_messages(map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6582 for (map
<mds_rank_t
, MCacheExpire
*>::iterator it
= expiremap
.begin();
6583 it
!= expiremap
.end();
6585 if (mds
->is_cluster_degraded() &&
6586 (mds
->mdsmap
->get_state(it
->first
) < MDSMap::STATE_REJOIN
||
6587 (mds
->mdsmap
->get_state(it
->first
) == MDSMap::STATE_REJOIN
&&
6588 rejoin_sent
.count(it
->first
) == 0))) {
6592 dout(7) << "sending cache_expire to " << it
->first
<< dendl
;
6593 mds
->send_message_mds(it
->second
, it
->first
);
6598 bool MDCache::trim_dentry(CDentry
*dn
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6600 dout(12) << "trim_dentry " << *dn
<< dendl
;
6602 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6604 CDir
*dir
= dn
->get_dir();
6607 CDir
*con
= get_subtree_root(dir
);
6609 dout(12) << " in container " << *con
<< dendl
;
6611 dout(12) << " no container; under a not-yet-linked dir" << dendl
;
6612 assert(dn
->is_auth());
6615 // If replica dentry is not readable, it's likely we will receive
6616 // MDentryLink/MDentryUnlink message soon (It's possible we first
6617 // receive a MDentryUnlink message, then MDentryLink message)
6618 // MDentryLink message only replicates an inode, so we should
6619 // avoid trimming the inode's parent dentry. This is because that
6620 // unconnected replicas are problematic for subtree migration.
6621 if (!dn
->is_auth() && !dn
->lock
.can_read(-1) &&
6622 !dn
->get_dir()->get_inode()->is_stray())
6625 // adjust the dir state
6626 // NOTE: we can safely remove a clean, null dentry without effecting
6627 // directory completeness.
6628 // (check this _before_ we unlink the inode, below!)
6629 bool clear_complete
= false;
6630 if (!(dnl
->is_null() && dn
->is_clean()))
6631 clear_complete
= true;
6633 // unlink the dentry
6634 if (dnl
->is_remote()) {
6636 dir
->unlink_inode(dn
, false);
6637 } else if (dnl
->is_primary()) {
6638 // expire the inode, too.
6639 CInode
*in
= dnl
->get_inode();
6641 if (trim_inode(dn
, in
, con
, expiremap
))
6642 return true; // purging stray instead of trimming
6644 assert(dnl
->is_null());
6647 if (!dn
->is_auth()) {
6648 // notify dentry authority.
6649 mds_authority_t auth
= dn
->authority();
6651 for (int p
=0; p
<2; p
++) {
6652 mds_rank_t a
= auth
.first
;
6653 if (p
) a
= auth
.second
;
6654 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6655 if (mds
->get_nodeid() == auth
.second
&&
6656 con
->is_importing()) break; // don't send any expire while importing.
6657 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6659 dout(12) << " sending expire to mds." << a
<< " on " << *dn
<< dendl
;
6660 assert(a
!= mds
->get_nodeid());
6661 if (expiremap
.count(a
) == 0)
6662 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6663 expiremap
[a
]->add_dentry(con
->dirfrag(), dir
->dirfrag(), dn
->get_name(), dn
->last
, dn
->get_replica_nonce());
6668 if (dn
->last
== CEPH_NOSNAP
&& dir
->is_auth())
6669 dir
->add_to_bloom(dn
);
6670 dir
->remove_dentry(dn
);
6673 dir
->state_clear(CDir::STATE_COMPLETE
);
6675 if (mds
->logger
) mds
->logger
->inc(l_mds_inodes_expired
);
6680 void MDCache::trim_dirfrag(CDir
*dir
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6682 dout(15) << "trim_dirfrag " << *dir
<< dendl
;
6684 if (dir
->is_subtree_root()) {
6685 assert(!dir
->is_auth() ||
6686 (!dir
->is_replicated() && dir
->inode
->is_base()));
6687 remove_subtree(dir
); // remove from subtree map
6689 assert(dir
->get_num_ref() == 0);
6691 CInode
*in
= dir
->get_inode();
6693 if (!dir
->is_auth()) {
6694 mds_authority_t auth
= dir
->authority();
6696 // was this an auth delegation? (if so, slightly modified container)
6698 if (dir
->is_subtree_root()) {
6699 dout(12) << " subtree root, container is " << *dir
<< dendl
;
6701 condf
= dir
->dirfrag();
6703 condf
= con
->dirfrag();
6706 for (int p
=0; p
<2; p
++) {
6707 mds_rank_t a
= auth
.first
;
6708 if (p
) a
= auth
.second
;
6709 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6710 if (mds
->get_nodeid() == auth
.second
&&
6711 con
->is_importing()) break; // don't send any expire while importing.
6712 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6714 dout(12) << " sending expire to mds." << a
<< " on " << *dir
<< dendl
;
6715 assert(a
!= mds
->get_nodeid());
6716 if (expiremap
.count(a
) == 0)
6717 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6718 expiremap
[a
]->add_dir(condf
, dir
->dirfrag(), dir
->replica_nonce
);
6722 in
->close_dirfrag(dir
->dirfrag().frag
);
6726 * Try trimming an inode from the cache
6728 * @return true if the inode is still in cache, else false if it was trimmed
6730 bool MDCache::trim_inode(CDentry
*dn
, CInode
*in
, CDir
*con
, map
<mds_rank_t
, MCacheExpire
*>& expiremap
)
6732 dout(15) << "trim_inode " << *in
<< dendl
;
6733 assert(in
->get_num_ref() == 0);
6736 // If replica inode's dirfragtreelock is not readable, it's likely
6737 // some dirfrags of the inode are being fragmented and we will receive
6738 // MMDSFragmentNotify soon. MMDSFragmentNotify only replicates the new
6739 // dirfrags, so we should avoid trimming these dirfrags' parent inode.
6740 // This is because that unconnected replicas are problematic for
6741 // subtree migration.
6743 if (!in
->is_auth() && !in
->dirfragtreelock
.can_read(-1))
6748 in
->get_dirfrags(dfls
);
6749 for (list
<CDir
*>::iterator p
= dfls
.begin(); p
!= dfls
.end(); ++p
) {
6751 assert(!dir
->is_subtree_root());
6752 trim_dirfrag(dir
, con
? con
:dir
, expiremap
); // if no container (e.g. root dirfrag), use *p
6757 if (in
->is_auth()) {
6758 // eval stray after closing dirfrags
6759 if (dn
&& !dn
->state_test(CDentry::STATE_PURGING
)) {
6760 maybe_eval_stray(in
);
6761 if (dn
->state_test(CDentry::STATE_PURGING
) || dn
->get_num_ref() > 0)
6765 mds_authority_t auth
= in
->authority();
6769 df
= con
->dirfrag();
6771 df
= dirfrag_t(0,frag_t()); // must be a root or stray inode.
6773 for (int p
=0; p
<2; p
++) {
6774 mds_rank_t a
= auth
.first
;
6775 if (p
) a
= auth
.second
;
6776 if (a
< 0 || (p
== 1 && auth
.second
== auth
.first
)) break;
6777 if (con
&& mds
->get_nodeid() == auth
.second
&&
6778 con
->is_importing()) break; // don't send any expire while importing.
6779 if (a
== mds
->get_nodeid()) continue; // on export, ignore myself.
6781 dout(12) << " sending expire to mds." << a
<< " on " << *in
<< dendl
;
6782 assert(a
!= mds
->get_nodeid());
6783 if (expiremap
.count(a
) == 0)
6784 expiremap
[a
] = new MCacheExpire(mds
->get_nodeid());
6785 expiremap
[a
]->add_inode(df
, in
->vino(), in
->get_replica_nonce());
6790 if (in->is_auth()) {
6791 if (in->hack_accessed)
6792 mds->logger->inc("outt");
6794 mds->logger->inc("outut");
6795 mds->logger->fset("oututl", ceph_clock_now() - in->hack_load_stamp);
6802 dn
->get_dir()->unlink_inode(dn
, false);
6809 * trim_non_auth - remove any non-auth items from our cache
6811 * this reduces the amount of non-auth metadata in our cache, reducing the
6812 * load incurred by the rejoin phase.
6814 * the only non-auth items that remain are those that are needed to
6815 * attach our own subtrees to the root.
6817 * when we are done, all dentries will be in the top bit of the lru.
6819 * why we have to do this:
6820 * we may not have accurate linkage for non-auth items. which means we will
6821 * know which subtree it falls into, and can not be sure to declare it to the
6822 * correct authority.
6824 void MDCache::trim_non_auth()
6826 dout(7) << "trim_non_auth" << dendl
;
6828 // temporarily pin all subtree roots
6829 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6830 p
!= subtrees
.end();
6832 p
->first
->get(CDir::PIN_SUBTREETEMP
);
6834 list
<CDentry
*> auth_list
;
6836 // trim non-auth items from the lru
6839 if (bottom_lru
.lru_get_size() > 0)
6840 dn
= static_cast<CDentry
*>(bottom_lru
.lru_expire());
6841 if (!dn
&& lru
.lru_get_size() > 0)
6842 dn
= static_cast<CDentry
*>(lru
.lru_expire());
6846 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6848 if (dn
->is_auth()) {
6849 // add back into lru (at the top)
6850 auth_list
.push_back(dn
);
6852 if (dnl
->is_remote() && dnl
->get_inode() && !dnl
->get_inode()->is_auth())
6853 dn
->unlink_remote(dnl
);
6855 // non-auth. expire.
6856 CDir
*dir
= dn
->get_dir();
6859 // unlink the dentry
6860 dout(10) << " removing " << *dn
<< dendl
;
6861 if (dnl
->is_remote()) {
6862 dir
->unlink_inode(dn
, false);
6864 else if (dnl
->is_primary()) {
6865 CInode
*in
= dnl
->get_inode();
6866 dout(10) << " removing " << *in
<< dendl
;
6868 in
->get_dirfrags(ls
);
6869 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6871 assert(!subdir
->is_subtree_root());
6872 in
->close_dirfrag(subdir
->dirfrag().frag
);
6874 dir
->unlink_inode(dn
, false);
6878 assert(dnl
->is_null());
6881 assert(!dir
->has_bloom());
6882 dir
->remove_dentry(dn
);
6883 // adjust the dir state
6884 dir
->state_clear(CDir::STATE_COMPLETE
); // dir incomplete!
6885 // close empty non-auth dirfrag
6886 if (!dir
->is_subtree_root() && dir
->get_num_any() == 0)
6887 dir
->inode
->close_dirfrag(dir
->get_frag());
6891 for (auto dn
: auth_list
) {
6892 if (dn
->state_test(CDentry::STATE_BOTTOMLRU
))
6893 bottom_lru
.lru_insert_mid(dn
);
6895 lru
.lru_insert_top(dn
);
6898 // move everything in the pintail to the top bit of the lru.
6899 lru
.lru_touch_entire_pintail();
6901 // unpin all subtrees
6902 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
6903 p
!= subtrees
.end();
6905 p
->first
->put(CDir::PIN_SUBTREETEMP
);
6907 if (lru
.lru_get_size() == 0 &&
6908 bottom_lru
.lru_get_size() == 0) {
6909 // root, stray, etc.?
6910 auto p
= inode_map
.begin();
6911 while (p
!= inode_map
.end()) {
6912 CInode
*in
= p
->second
;
6914 if (!in
->is_auth()) {
6916 in
->get_dirfrags(ls
);
6917 for (list
<CDir
*>::iterator p
= ls
.begin();
6920 dout(10) << " removing " << **p
<< dendl
;
6921 assert((*p
)->get_num_ref() == 1); // SUBTREE
6922 remove_subtree((*p
));
6923 in
->close_dirfrag((*p
)->dirfrag().frag
);
6925 dout(10) << " removing " << *in
<< dendl
;
6926 assert(!in
->get_parent_dn());
6927 assert(in
->get_num_ref() == 0);
6937 * Recursively trim the subtree rooted at directory to remove all
6938 * CInodes/CDentrys/CDirs that aren't links to remote MDSes, or ancestors
6939 * of those links. This is used to clear invalid data out of the cache.
6940 * Note that it doesn't clear the passed-in directory, since that's not
6943 bool MDCache::trim_non_auth_subtree(CDir
*dir
)
6945 dout(10) << "trim_non_auth_subtree(" << dir
<< ") " << *dir
<< dendl
;
6947 bool keep_dir
= !can_trim_non_auth_dirfrag(dir
);
6949 auto j
= dir
->begin();
6951 while (j
!= dir
->end()) {
6953 CDentry
*dn
= i
->second
;
6954 dout(10) << "trim_non_auth_subtree(" << dir
<< ") Checking dentry " << dn
<< dendl
;
6955 CDentry::linkage_t
*dnl
= dn
->get_linkage();
6956 if (dnl
->is_primary()) { // check for subdirectories, etc
6957 CInode
*in
= dnl
->get_inode();
6958 bool keep_inode
= false;
6960 list
<CDir
*> subdirs
;
6961 in
->get_dirfrags(subdirs
);
6962 for (list
<CDir
*>::iterator subdir
= subdirs
.begin();
6963 subdir
!= subdirs
.end();
6965 if ((*subdir
)->is_subtree_root()) {
6967 dout(10) << "trim_non_auth_subtree(" << dir
<< ") keeping " << **subdir
<< dendl
;
6969 if (trim_non_auth_subtree(*subdir
))
6972 in
->close_dirfrag((*subdir
)->get_frag());
6973 dir
->state_clear(CDir::STATE_COMPLETE
); // now incomplete!
6979 if (!keep_inode
) { // remove it!
6980 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing inode " << in
<< " with dentry" << dn
<< dendl
;
6981 dir
->unlink_inode(dn
, false);
6983 assert(!dir
->has_bloom());
6984 dir
->remove_dentry(dn
);
6986 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping inode " << in
<< " with dentry " << dn
<<dendl
;
6987 dn
->state_clear(CDentry::STATE_AUTH
);
6988 in
->state_clear(CInode::STATE_AUTH
);
6990 } else if (keep_dir
&& dnl
->is_null()) { // keep null dentry for slave rollback
6991 dout(20) << "trim_non_auth_subtree(" << dir
<< ") keeping dentry " << dn
<<dendl
;
6992 } else { // just remove it
6993 dout(20) << "trim_non_auth_subtree(" << dir
<< ") removing dentry " << dn
<< dendl
;
6994 if (dnl
->is_remote())
6995 dir
->unlink_inode(dn
, false);
6996 dir
->remove_dentry(dn
);
6999 dir
->state_clear(CDir::STATE_AUTH
);
7001 * We've now checked all our children and deleted those that need it.
7002 * Now return to caller, and tell them if *we're* a keeper.
7004 return keep_dir
|| dir
->get_num_any();
7008 * during replay, when we determine a subtree is no longer ours, we
7009 * try to trim it from our cache. because subtrees must be connected
7010 * to the root, the fact that we can trim this tree may mean that our
7011 * children or parents can also be trimmed.
7013 void MDCache::try_trim_non_auth_subtree(CDir
*dir
)
7015 dout(10) << "try_trim_nonauth_subtree " << *dir
<< dendl
;
7017 // can we now trim child subtrees?
7019 get_subtree_bounds(dir
, bounds
);
7020 for (set
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
) {
7022 if (bd
->get_dir_auth().first
!= mds
->get_nodeid() && // we are not auth
7023 bd
->get_num_any() == 0 && // and empty
7024 can_trim_non_auth_dirfrag(bd
)) {
7025 CInode
*bi
= bd
->get_inode();
7026 dout(10) << " closing empty non-auth child subtree " << *bd
<< dendl
;
7029 bi
->close_dirfrag(bd
->get_frag());
7033 if (trim_non_auth_subtree(dir
)) {
7035 try_subtree_merge(dir
);
7037 // can we trim this subtree (and possibly our ancestors) too?
7039 CInode
*diri
= dir
->get_inode();
7040 if (diri
->is_base()) {
7041 if (!diri
->is_root() && diri
->authority().first
!= mds
->get_nodeid()) {
7042 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
7043 remove_subtree(dir
);
7045 diri
->close_dirfrag(dir
->get_frag());
7047 dout(10) << " removing " << *diri
<< dendl
;
7048 assert(!diri
->get_parent_dn());
7049 assert(diri
->get_num_ref() == 0);
7055 CDir
*psub
= get_subtree_root(diri
->get_parent_dir());
7056 dout(10) << " parent subtree is " << *psub
<< dendl
;
7057 if (psub
->get_dir_auth().first
== mds
->get_nodeid())
7058 break; // we are auth, keep.
7060 dout(10) << " closing empty non-auth subtree " << *dir
<< dendl
;
7061 remove_subtree(dir
);
7063 diri
->close_dirfrag(dir
->get_frag());
7065 dout(10) << " parent subtree also non-auth: " << *psub
<< dendl
;
7066 if (trim_non_auth_subtree(psub
))
7075 void MDCache::standby_trim_segment(LogSegment
*ls
)
7077 ls
->new_dirfrags
.clear_list();
7078 ls
->open_files
.clear_list();
7080 while (!ls
->dirty_dirfrags
.empty()) {
7081 CDir
*dir
= ls
->dirty_dirfrags
.front();
7084 while (!ls
->dirty_inodes
.empty()) {
7085 CInode
*in
= ls
->dirty_inodes
.front();
7088 while (!ls
->dirty_dentries
.empty()) {
7089 CDentry
*dn
= ls
->dirty_dentries
.front();
7092 while (!ls
->dirty_parent_inodes
.empty()) {
7093 CInode
*in
= ls
->dirty_parent_inodes
.front();
7094 in
->clear_dirty_parent();
7096 while (!ls
->dirty_dirfrag_dir
.empty()) {
7097 CInode
*in
= ls
->dirty_dirfrag_dir
.front();
7098 in
->filelock
.remove_dirty();
7100 while (!ls
->dirty_dirfrag_nest
.empty()) {
7101 CInode
*in
= ls
->dirty_dirfrag_nest
.front();
7102 in
->nestlock
.remove_dirty();
7104 while (!ls
->dirty_dirfrag_dirfragtree
.empty()) {
7105 CInode
*in
= ls
->dirty_dirfrag_dirfragtree
.front();
7106 in
->dirfragtreelock
.remove_dirty();
7110 /* This function DOES put the passed message before returning */
7111 void MDCache::handle_cache_expire(MCacheExpire
*m
)
7113 mds_rank_t from
= mds_rank_t(m
->get_from());
7115 dout(7) << "cache_expire from mds." << from
<< dendl
;
7117 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
7122 set
<SimpleLock
*> gather_locks
;
7124 for (map
<dirfrag_t
,MCacheExpire::realm
>::iterator p
= m
->realms
.begin();
7125 p
!= m
->realms
.end();
7128 if (p
->first
.ino
> 0) {
7129 CInode
*expired_inode
= get_inode(p
->first
.ino
);
7130 assert(expired_inode
); // we had better have this.
7131 CDir
*parent_dir
= expired_inode
->get_approx_dirfrag(p
->first
.frag
);
7134 int export_state
= -1;
7135 if (parent_dir
->is_auth() && parent_dir
->is_exporting()) {
7136 export_state
= migrator
->get_export_state(parent_dir
);
7137 assert(export_state
>= 0);
7140 if (!parent_dir
->is_auth() ||
7141 (export_state
!= -1 &&
7142 ((export_state
== Migrator::EXPORT_WARNING
&&
7143 migrator
->export_has_warned(parent_dir
,from
)) ||
7144 export_state
== Migrator::EXPORT_EXPORTING
||
7145 export_state
== Migrator::EXPORT_LOGGINGFINISH
||
7146 (export_state
== Migrator::EXPORT_NOTIFYING
&&
7147 !migrator
->export_has_notified(parent_dir
,from
))))) {
7150 dout(7) << "delaying nonauth|warned expires for " << *parent_dir
<< dendl
;
7151 assert(parent_dir
->is_frozen_tree_root());
7153 // make a message container
7154 if (delayed_expire
[parent_dir
].count(from
) == 0)
7155 delayed_expire
[parent_dir
][from
] = new MCacheExpire(from
);
7157 // merge these expires into it
7158 delayed_expire
[parent_dir
][from
]->add_realm(p
->first
, p
->second
);
7161 assert(export_state
<= Migrator::EXPORT_PREPPING
||
7162 (export_state
== Migrator::EXPORT_WARNING
&&
7163 !migrator
->export_has_warned(parent_dir
, from
)));
7165 dout(7) << "expires for " << *parent_dir
<< dendl
;
7167 dout(7) << "containerless expires (root, stray inodes)" << dendl
;
7171 for (map
<vinodeno_t
,uint32_t>::iterator it
= p
->second
.inodes
.begin();
7172 it
!= p
->second
.inodes
.end();
7174 CInode
*in
= get_inode(it
->first
);
7175 unsigned nonce
= it
->second
;
7178 dout(0) << " inode expire on " << it
->first
<< " from " << from
7179 << ", don't have it" << dendl
;
7182 assert(in
->is_auth());
7183 dout(20) << __func__
<< ": expiring inode " << *in
<< dendl
;
7186 if (nonce
== in
->get_replica_nonce(from
)) {
7187 // remove from our cached_by
7188 dout(7) << " inode expire on " << *in
<< " from mds." << from
7189 << " cached_by was " << in
->get_replicas() << dendl
;
7190 inode_remove_replica(in
, from
, false, gather_locks
);
7193 // this is an old nonce, ignore expire.
7194 dout(7) << " inode expire on " << *in
<< " from mds." << from
7195 << " with old nonce " << nonce
7196 << " (current " << in
->get_replica_nonce(from
) << "), dropping"
7202 for (map
<dirfrag_t
,uint32_t>::iterator it
= p
->second
.dirs
.begin();
7203 it
!= p
->second
.dirs
.end();
7205 CDir
*dir
= get_dirfrag(it
->first
);
7206 unsigned nonce
= it
->second
;
7209 CInode
*diri
= get_inode(it
->first
.ino
);
7211 if (mds
->is_rejoin() &&
7212 rejoin_ack_gather
.count(mds
->get_nodeid()) && // haven't sent rejoin ack yet
7213 !diri
->is_replica(from
)) {
7215 diri
->get_nested_dirfrags(ls
);
7216 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7217 << " while rejoining, inode isn't replicated" << dendl
;
7218 for (list
<CDir
*>::iterator q
= ls
.begin(); q
!= ls
.end(); ++q
) {
7220 if (dir
->is_replica(from
)) {
7221 dout(7) << " dir expire on " << *dir
<< " from mds." << from
<< dendl
;
7222 dir
->remove_replica(from
);
7227 CDir
*other
= diri
->get_approx_dirfrag(it
->first
.frag
);
7229 dout(7) << " dir expire on dirfrag " << it
->first
<< " from mds." << from
7230 << " have " << *other
<< ", mismatched frags, dropping" << dendl
;
7234 dout(0) << " dir expire on " << it
->first
<< " from " << from
7235 << ", don't have it" << dendl
;
7238 dout(20) << __func__
<< ": expiring dirfrag " << *dir
<< dendl
;
7240 assert(dir
->is_auth());
7243 if (nonce
== dir
->get_replica_nonce(from
)) {
7244 // remove from our cached_by
7245 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7246 << " replicas was " << dir
->get_replicas() << dendl
;
7247 dir
->remove_replica(from
);
7250 // this is an old nonce, ignore expire.
7251 dout(7) << " dir expire on " << *dir
<< " from mds." << from
7252 << " with old nonce " << nonce
<< " (current " << dir
->get_replica_nonce(from
)
7253 << "), dropping" << dendl
;
7258 for (map
<dirfrag_t
, map
<pair
<string
,snapid_t
>,uint32_t> >::iterator pd
= p
->second
.dentries
.begin();
7259 pd
!= p
->second
.dentries
.end();
7261 dout(10) << " dn expires in dir " << pd
->first
<< dendl
;
7262 CInode
*diri
= get_inode(pd
->first
.ino
);
7264 CDir
*dir
= diri
->get_dirfrag(pd
->first
.frag
);
7267 dout(0) << " dn expires on " << pd
->first
<< " from " << from
7268 << ", must have refragmented" << dendl
;
7270 assert(dir
->is_auth());
7273 for (map
<pair
<string
,snapid_t
>,uint32_t>::iterator p
= pd
->second
.begin();
7274 p
!= pd
->second
.end();
7276 unsigned nonce
= p
->second
;
7280 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7282 // which dirfrag for this dentry?
7283 CDir
*dir
= diri
->get_dirfrag(diri
->pick_dirfrag(p
->first
.first
));
7285 assert(dir
->is_auth());
7286 dn
= dir
->lookup(p
->first
.first
, p
->first
.second
);
7291 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< " in " << *dir
<< dendl
;
7293 dout(0) << " missing dentry for " << p
->first
.first
<< " snap " << p
->first
.second
<< dendl
;
7297 if (nonce
== dn
->get_replica_nonce(from
)) {
7298 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
<< dendl
;
7299 dentry_remove_replica(dn
, from
, gather_locks
);
7302 dout(7) << " dentry_expire on " << *dn
<< " from mds." << from
7303 << " with old nonce " << nonce
<< " (current " << dn
->get_replica_nonce(from
)
7304 << "), dropping" << dendl
;
7313 for (set
<SimpleLock
*>::iterator p
= gather_locks
.begin(); p
!= gather_locks
.end(); ++p
) {
7314 if (!(*p
)->is_stable())
7315 mds
->locker
->eval_gather(*p
);
7319 void MDCache::process_delayed_expire(CDir
*dir
)
7321 dout(7) << "process_delayed_expire on " << *dir
<< dendl
;
7322 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7323 p
!= delayed_expire
[dir
].end();
7325 handle_cache_expire(p
->second
);
7326 delayed_expire
.erase(dir
);
7329 void MDCache::discard_delayed_expire(CDir
*dir
)
7331 dout(7) << "discard_delayed_expire on " << *dir
<< dendl
;
7332 for (map
<mds_rank_t
,MCacheExpire
*>::iterator p
= delayed_expire
[dir
].begin();
7333 p
!= delayed_expire
[dir
].end();
7336 delayed_expire
.erase(dir
);
7339 void MDCache::inode_remove_replica(CInode
*in
, mds_rank_t from
, bool rejoin
,
7340 set
<SimpleLock
*>& gather_locks
)
7342 in
->remove_replica(from
);
7343 in
->mds_caps_wanted
.erase(from
);
7345 // note: this code calls _eval more often than it needs to!
7347 if (in
->authlock
.remove_replica(from
)) gather_locks
.insert(&in
->authlock
);
7348 if (in
->linklock
.remove_replica(from
)) gather_locks
.insert(&in
->linklock
);
7349 if (in
->snaplock
.remove_replica(from
)) gather_locks
.insert(&in
->snaplock
);
7350 if (in
->xattrlock
.remove_replica(from
)) gather_locks
.insert(&in
->xattrlock
);
7351 if (in
->flocklock
.remove_replica(from
)) gather_locks
.insert(&in
->flocklock
);
7352 if (in
->policylock
.remove_replica(from
)) gather_locks
.insert(&in
->policylock
);
7354 // If 'rejoin' is true and the scatter lock is in LOCK_MIX_* state.
7355 // Don't remove the recovering mds from lock's gathering list because
7356 // it may hold rejoined wrlocks.
7357 if (in
->dirfragtreelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->dirfragtreelock
);
7358 if (in
->filelock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->filelock
);
7359 if (in
->nestlock
.remove_replica(from
, rejoin
)) gather_locks
.insert(&in
->nestlock
);
7362 void MDCache::dentry_remove_replica(CDentry
*dn
, mds_rank_t from
, set
<SimpleLock
*>& gather_locks
)
7364 dn
->remove_replica(from
);
7367 if (dn
->lock
.remove_replica(from
))
7368 gather_locks
.insert(&dn
->lock
);
7370 // Replicated strays might now be elegible for purge
7371 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7372 if (dnl
->is_primary()) {
7373 maybe_eval_stray(dnl
->get_inode());
7377 void MDCache::trim_client_leases()
7379 utime_t now
= ceph_clock_now();
7381 dout(10) << "trim_client_leases" << dendl
;
7383 for (int pool
=0; pool
<client_lease_pools
; pool
++) {
7384 int before
= client_leases
[pool
].size();
7385 if (client_leases
[pool
].empty())
7388 while (!client_leases
[pool
].empty()) {
7389 ClientLease
*r
= client_leases
[pool
].front();
7390 if (r
->ttl
> now
) break;
7391 CDentry
*dn
= static_cast<CDentry
*>(r
->parent
);
7392 dout(10) << " expiring client." << r
->client
<< " lease of " << *dn
<< dendl
;
7393 dn
->remove_client_lease(r
, mds
->locker
);
7395 int after
= client_leases
[pool
].size();
7396 dout(10) << "trim_client_leases pool " << pool
<< " trimmed "
7397 << (before
-after
) << " leases, " << after
<< " left" << dendl
;
7402 void MDCache::check_memory_usage()
7404 static MemoryModel
mm(g_ceph_context
);
7405 static MemoryModel::snap last
;
7407 static MemoryModel::snap baseline
= last
;
7409 // check client caps
7410 assert(CInode::count() == inode_map
.size() + snap_inode_map
.size() + num_shadow_inodes
);
7411 double caps_per_inode
= 0.0;
7412 if (CInode::count())
7413 caps_per_inode
= (double)Capability::count() / (double)CInode::count();
7415 dout(2) << "check_memory_usage"
7416 << " total " << last
.get_total()
7417 << ", rss " << last
.get_rss()
7418 << ", heap " << last
.get_heap()
7419 << ", baseline " << baseline
.get_heap()
7420 << ", buffers " << (buffer::get_total_alloc() >> 10)
7421 << ", " << num_inodes_with_caps
<< " / " << CInode::count() << " inodes have caps"
7422 << ", " << Capability::count() << " caps, " << caps_per_inode
<< " caps per inode"
7425 mds
->update_mlogger();
7426 mds
->mlogger
->set(l_mdm_rss
, last
.get_rss());
7427 mds
->mlogger
->set(l_mdm_heap
, last
.get_heap());
7429 if (cache_toofull()) {
7430 last_recall_state
= ceph_clock_now();
7431 mds
->server
->recall_client_state();
7434 // If the cache size had exceeded its limit, but we're back in bounds
7435 // now, free any unused pool memory so that our memory usage isn't
7436 // permanently bloated.
7437 if (exceeded_size_limit
&& !cache_toofull()) {
7438 // Only do this once we are back in bounds: otherwise the releases would
7439 // slow down whatever process caused us to exceed bounds to begin with
7440 if (ceph_using_tcmalloc()) {
7441 dout(2) << "check_memory_usage: releasing unused space from tcmalloc"
7443 ceph_heap_release_free_memory();
7445 exceeded_size_limit
= false;
7451 // =========================================================================================
7454 class C_MDC_ShutdownCheck
: public MDCacheContext
{
7456 explicit C_MDC_ShutdownCheck(MDCache
*m
) : MDCacheContext(m
) {}
7457 void finish(int) override
{
7458 mdcache
->shutdown_check();
7462 void MDCache::shutdown_check()
7464 dout(0) << "shutdown_check at " << ceph_clock_now() << dendl
;
7467 char old_val
[32] = { 0 };
7469 g_conf
->get_val("debug_mds", &o
, sizeof(old_val
));
7470 g_conf
->set_val("debug_mds", "10");
7471 g_conf
->apply_changes(NULL
);
7473 g_conf
->set_val("debug_mds", old_val
);
7474 g_conf
->apply_changes(NULL
);
7475 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7478 dout(0) << "lru size now " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7479 dout(0) << "log len " << mds
->mdlog
->get_num_events() << dendl
;
7482 if (mds
->objecter
->is_active()) {
7483 dout(0) << "objecter still active" << dendl
;
7484 mds
->objecter
->dump_active();
7489 void MDCache::shutdown_start()
7491 dout(2) << "shutdown_start" << dendl
;
7493 if (g_conf
->mds_shutdown_check
)
7494 mds
->timer
.add_event_after(g_conf
->mds_shutdown_check
, new C_MDC_ShutdownCheck(this));
7496 // g_conf->debug_mds = 10;
7501 bool MDCache::shutdown_pass()
7503 dout(7) << "shutdown_pass" << dendl
;
7505 if (mds
->is_stopped()) {
7506 dout(7) << " already shut down" << dendl
;
7513 if (!shutdown_export_strays()) {
7514 dout(7) << "waiting for strays to migrate" << dendl
;
7518 // drop our reference to our stray dir inode
7519 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7521 strays
[i
]->state_test(CInode::STATE_STRAYPINNED
)) {
7522 strays
[i
]->state_clear(CInode::STATE_STRAYPINNED
);
7523 strays
[i
]->put(CInode::PIN_STRAY
);
7524 strays
[i
]->put_stickydirs();
7530 dout(5) << "lru size now " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7533 int num_auth_subtree
= 0;
7534 if (!subtrees
.empty() &&
7535 mds
->get_nodeid() != 0 &&
7536 migrator
->get_export_queue_size() == 0) {
7537 dout(7) << "looking for subtrees to export to mds0" << dendl
;
7539 for (map
<CDir
*, set
<CDir
*> >::iterator it
= subtrees
.begin();
7540 it
!= subtrees
.end();
7542 CDir
*dir
= it
->first
;
7543 if (dir
->get_inode()->is_mdsdir())
7545 if (dir
->is_auth()) {
7547 if (dir
->is_frozen() ||
7548 dir
->is_freezing() ||
7549 dir
->is_ambiguous_dir_auth() ||
7550 dir
->state_test(CDir::STATE_EXPORTING
))
7555 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7557 mds_rank_t dest
= dir
->get_inode()->authority().first
;
7558 if (dest
> 0 && !mds
->mdsmap
->is_active(dest
))
7560 dout(7) << "sending " << *dir
<< " back to mds." << dest
<< dendl
;
7561 migrator
->export_dir_nicely(dir
, dest
);
7565 if (num_auth_subtree
> 0) {
7566 dout(7) << "still have " << num_auth_subtree
<< " auth subtrees" << dendl
;
7571 // close out any sessions (and open files!) before we try to trim the log, etc.
7572 if (mds
->sessionmap
.have_unclosed_sessions()) {
7573 if (!mds
->server
->terminating_sessions
)
7574 mds
->server
->terminate_sessions();
7578 CDir
*mydir
= myin
? myin
->get_dirfrag(frag_t()) : NULL
;
7579 if (mydir
&& !mydir
->is_subtree_root())
7582 // subtrees map not empty yet?
7583 if (subtrees
.size() > (mydir
? 1 : 0)) {
7584 dout(7) << "still have " << num_subtrees() << " subtrees" << dendl
;
7586 migrator
->show_importing();
7587 migrator
->show_exporting();
7588 if (!migrator
->is_importing() && !migrator
->is_exporting())
7592 assert(!migrator
->is_exporting());
7593 assert(!migrator
->is_importing());
7595 // flush what we can from the log
7596 mds
->mdlog
->trim(0);
7597 if (mds
->mdlog
->get_num_segments() > 1) {
7598 dout(7) << "still >1 segments, waiting for log to trim" << dendl
;
7602 if ((myin
&& myin
->is_auth_pinned()) ||
7603 (mydir
&& mydir
->is_auth_pinned())) {
7604 dout(7) << "still have auth pinned objects" << dendl
;
7608 // (only do this once!)
7609 if (!mds
->mdlog
->is_capped()) {
7610 dout(7) << "capping the log" << dendl
;
7615 if (!mds
->mdlog
->empty()) {
7616 dout(7) << "waiting for log to flush.. " << mds
->mdlog
->get_num_events()
7617 << " in " << mds
->mdlog
->get_num_segments() << " segments" << dendl
;
7621 if (!did_shutdown_log_cap
) {
7622 // flush journal header
7623 dout(7) << "writing header for (now-empty) journal" << dendl
;
7624 assert(mds
->mdlog
->empty());
7625 mds
->mdlog
->write_head(0);
7626 // NOTE: filer active checker below will block us until this completes.
7627 did_shutdown_log_cap
= true;
7632 if (mds
->objecter
->is_active()) {
7633 dout(7) << "objecter still active" << dendl
;
7634 mds
->objecter
->dump_active();
7638 // trim what we can from the cache
7639 if (lru
.lru_get_size() > 0 || bottom_lru
.lru_get_size() > 0) {
7640 dout(7) << "there's still stuff in the cache: " << lru
.lru_get_size() << "/" << bottom_lru
.lru_get_size() << dendl
;
7646 // make mydir subtree go away
7648 if (mydir
->get_num_ref() > 1) { // subtree pin
7649 dout(7) << "there's still reference to mydir " << *mydir
<< dendl
;
7654 remove_subtree(mydir
);
7655 myin
->close_dirfrag(mydir
->get_frag());
7657 assert(subtrees
.empty());
7663 dout(2) << "shutdown done." << dendl
;
7667 bool MDCache::shutdown_export_strays()
7669 if (mds
->get_nodeid() == 0)
7672 dout(10) << "shutdown_export_strays" << dendl
;
7674 bool mds0_active
= mds
->mdsmap
->is_active(mds_rank_t(0));
7679 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
7683 strays
[i
]->get_dirfrags(dfs
);
7686 for (std::list
<CDir
*>::iterator dfs_i
= dfs
.begin();
7687 dfs_i
!= dfs
.end(); ++dfs_i
)
7691 if (!dir
->is_complete()) {
7698 for (auto &p
: dir
->items
) {
7699 CDentry
*dn
= p
.second
;
7700 CDentry::linkage_t
*dnl
= dn
->get_linkage();
7707 if (dn
->state_test(CDentry::STATE_PURGING
)) {
7708 // Don't try to migrate anything that is actually
7709 // being purged right now
7713 if (shutdown_exported_strays
.count(dnl
->get_inode()->ino()) == 0) {
7714 shutdown_exported_strays
.insert(dnl
->get_inode()->ino());
7715 stray_manager
.migrate_stray(dn
, mds_rank_t(0)); // send to root!
7717 dout(10) << "already exporting " << *dn
<< dendl
;
7725 // ========= messaging ==============
7727 /* This function DOES put the passed message before returning */
7728 void MDCache::dispatch(Message
*m
)
7730 switch (m
->get_type()) {
7733 case MSG_MDS_RESOLVE
:
7734 handle_resolve(static_cast<MMDSResolve
*>(m
));
7736 case MSG_MDS_RESOLVEACK
:
7737 handle_resolve_ack(static_cast<MMDSResolveAck
*>(m
));
7741 case MSG_MDS_CACHEREJOIN
:
7742 handle_cache_rejoin(static_cast<MMDSCacheRejoin
*>(m
));
7745 case MSG_MDS_DISCOVER
:
7746 handle_discover(static_cast<MDiscover
*>(m
));
7748 case MSG_MDS_DISCOVERREPLY
:
7749 handle_discover_reply(static_cast<MDiscoverReply
*>(m
));
7752 case MSG_MDS_DIRUPDATE
:
7753 handle_dir_update(static_cast<MDirUpdate
*>(m
));
7756 case MSG_MDS_CACHEEXPIRE
:
7757 handle_cache_expire(static_cast<MCacheExpire
*>(m
));
7760 case MSG_MDS_DENTRYLINK
:
7761 handle_dentry_link(static_cast<MDentryLink
*>(m
));
7763 case MSG_MDS_DENTRYUNLINK
:
7764 handle_dentry_unlink(static_cast<MDentryUnlink
*>(m
));
7767 case MSG_MDS_FRAGMENTNOTIFY
:
7768 handle_fragment_notify(static_cast<MMDSFragmentNotify
*>(m
));
7771 case MSG_MDS_FINDINO
:
7772 handle_find_ino(static_cast<MMDSFindIno
*>(m
));
7774 case MSG_MDS_FINDINOREPLY
:
7775 handle_find_ino_reply(static_cast<MMDSFindInoReply
*>(m
));
7778 case MSG_MDS_OPENINO
:
7779 handle_open_ino(static_cast<MMDSOpenIno
*>(m
));
7781 case MSG_MDS_OPENINOREPLY
:
7782 handle_open_ino_reply(static_cast<MMDSOpenInoReply
*>(m
));
7786 derr
<< "cache unknown message " << m
->get_type() << dendl
;
7787 assert(0 == "cache unknown message");
7791 MDSInternalContextBase
*MDCache::_get_waiter(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
)
7794 dout(20) << "_get_waiter retryrequest" << dendl
;
7795 return new C_MDS_RetryRequest(this, mdr
);
7797 dout(20) << "_get_waiter retrymessage" << dendl
;
7798 return new C_MDS_RetryMessage(mds
, req
);
7804 int MDCache::path_traverse(MDRequestRef
& mdr
, Message
*req
, MDSInternalContextBase
*fin
, // who
7805 const filepath
& path
, // what
7806 vector
<CDentry
*> *pdnvec
, // result
7810 bool discover
= (onfail
== MDS_TRAVERSE_DISCOVER
);
7811 bool null_okay
= (onfail
== MDS_TRAVERSE_DISCOVERXLOCK
);
7812 bool forward
= (onfail
== MDS_TRAVERSE_FORWARD
);
7814 assert(mdr
|| req
|| fin
);
7815 assert(!forward
|| mdr
|| req
); // forward requires a request
7817 snapid_t snapid
= CEPH_NOSNAP
;
7819 mdr
->snapid
= snapid
;
7821 client_t client
= (mdr
&& mdr
->reqid
.name
.is_client()) ? mdr
->reqid
.name
.num() : -1;
7823 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse
);
7825 dout(7) << "traverse: opening base ino " << path
.get_ino() << " snap " << snapid
<< dendl
;
7826 CInode
*cur
= get_inode(path
.get_ino());
7828 if (MDS_INO_IS_MDSDIR(path
.get_ino()))
7829 open_foreign_mdsdir(path
.get_ino(), _get_waiter(mdr
, req
, fin
));
7831 //ceph_abort(); // hrm.. broken
7836 if (cur
->state_test(CInode::STATE_PURGING
))
7839 // make sure snaprealm are open...
7840 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
7841 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
7852 while (depth
< path
.depth()) {
7853 dout(12) << "traverse: path seg depth " << depth
<< " '" << path
[depth
]
7854 << "' snapid " << snapid
<< dendl
;
7856 if (!cur
->is_dir()) {
7857 dout(7) << "traverse: " << *cur
<< " not a dir " << dendl
;
7861 // walk into snapdir?
7862 if (path
[depth
].length() == 0) {
7863 dout(10) << "traverse: snapdir" << dendl
;
7866 snapid
= CEPH_SNAPDIR
;
7867 mdr
->snapid
= snapid
;
7871 // walk thru snapdir?
7872 if (snapid
== CEPH_SNAPDIR
) {
7875 SnapRealm
*realm
= cur
->find_snaprealm();
7876 snapid
= realm
->resolve_snapname(path
[depth
], cur
->ino());
7877 dout(10) << "traverse: snap " << path
[depth
] << " -> " << snapid
<< dendl
;
7880 mdr
->snapid
= snapid
;
7886 frag_t fg
= cur
->pick_dirfrag(path
[depth
]);
7887 CDir
*curdir
= cur
->get_dirfrag(fg
);
7889 if (cur
->is_auth()) {
7890 // parent dir frozen_dir?
7891 if (cur
->is_frozen()) {
7892 dout(7) << "traverse: " << *cur
<< " is frozen, waiting" << dendl
;
7893 cur
->add_waiter(CDir::WAIT_UNFREEZE
, _get_waiter(mdr
, req
, fin
));
7896 curdir
= cur
->get_or_open_dirfrag(this, fg
);
7899 dout(10) << "traverse: need dirfrag " << fg
<< ", doing discover from " << *cur
<< dendl
;
7900 discover_path(cur
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
7902 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
7908 #ifdef MDS_VERIFY_FRAGSTAT
7909 if (curdir
->is_complete())
7910 curdir
->verify_fragstat();
7915 if (curdir->is_frozen()) {
7917 // FIXME: traverse is allowed?
7918 dout(7) << "traverse: " << *curdir << " is frozen, waiting" << dendl;
7919 curdir->add_waiter(CDir::WAIT_UNFREEZE, _get_waiter(mdr, req, fin));
7920 if (onfinish) delete onfinish;
7925 // Before doing dirfrag->dn lookup, compare with DamageTable's
7926 // record of which dentries were unreadable
7927 if (mds
->damage_table
.is_dentry_damaged(curdir
, path
[depth
], snapid
)) {
7928 dout(4) << "traverse: stopped lookup at damaged dentry "
7929 << *curdir
<< "/" << path
[depth
] << " snap=" << snapid
<< dendl
;
7934 CDentry
*dn
= curdir
->lookup(path
[depth
], snapid
);
7935 CDentry::linkage_t
*dnl
= dn
? dn
->get_projected_linkage() : 0;
7937 // null and last_bit and xlocked by me?
7938 if (dnl
&& dnl
->is_null() && null_okay
) {
7939 dout(10) << "traverse: hit null dentry at tail of traverse, succeeding" << dendl
;
7941 pdnvec
->push_back(dn
);
7948 dn
->lock
.is_xlocked() &&
7949 dn
->lock
.get_xlock_by() != mdr
&&
7950 !dn
->lock
.can_read(client
) &&
7951 (dnl
->is_null() || forward
)) {
7952 dout(10) << "traverse: xlocked dentry at " << *dn
<< dendl
;
7953 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7954 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_lock
);
7955 mds
->mdlog
->flush();
7959 // can we conclude ENOENT?
7960 if (dnl
&& dnl
->is_null()) {
7961 if (dn
->lock
.can_read(client
) ||
7962 (dn
->lock
.is_xlocked() && dn
->lock
.get_xlock_by() == mdr
)) {
7963 dout(10) << "traverse: miss on null+readable dentry " << path
[depth
] << " " << *dn
<< dendl
;
7965 if (depth
== path
.depth() - 1)
7966 pdnvec
->push_back(dn
);
7968 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
7972 dout(10) << "miss on dentry " << *dn
<< ", can't read due to lock" << dendl
;
7973 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, _get_waiter(mdr
, req
, fin
));
7978 if (dnl
&& !dnl
->is_null()) {
7979 CInode
*in
= dnl
->get_inode();
7981 // do we have inode?
7983 assert(dnl
->is_remote());
7985 in
= get_inode(dnl
->get_remote_ino());
7987 dout(7) << "linking in remote in " << *in
<< dendl
;
7988 dn
->link_remote(dnl
, in
);
7990 dout(7) << "remote link to " << dnl
->get_remote_ino() << ", which i don't have" << dendl
;
7991 assert(mdr
); // we shouldn't hit non-primary dentries doing a non-mdr traversal!
7992 if (mds
->damage_table
.is_remote_damaged(dnl
->get_remote_ino())) {
7993 dout(4) << "traverse: remote dentry points to damaged ino "
7997 open_remote_dentry(dn
, true, _get_waiter(mdr
, req
, fin
),
7998 (null_okay
&& depth
== path
.depth() - 1));
7999 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_remote_ino
);
8005 // make sure snaprealm are open...
8006 if (mdr
&& cur
->snaprealm
&& !cur
->snaprealm
->is_open() &&
8007 !cur
->snaprealm
->open_parents(_get_waiter(mdr
, req
, fin
))) {
8011 // add to trace, continue.
8014 pdnvec
->push_back(dn
);
8022 // MISS. dentry doesn't exist.
8023 dout(12) << "traverse: miss on dentry " << path
[depth
] << " in " << *curdir
<< dendl
;
8025 if (curdir
->is_auth()) {
8027 if (curdir
->is_complete() ||
8028 (snapid
== CEPH_NOSNAP
&&
8029 curdir
->has_bloom() &&
8030 !curdir
->is_in_bloom(path
[depth
]))){
8033 // instantiate a null dn?
8034 if (depth
< path
.depth()-1){
8035 dout(20) << " didn't traverse full path; not returning pdnvec" << dendl
;
8038 ceph_abort(); // should have fallen out in ->is_null() check above
8039 } else if (curdir
->is_frozen()) {
8040 dout(20) << " not adding null to frozen dir " << dendl
;
8041 } else if (snapid
< CEPH_MAXSNAP
) {
8042 dout(20) << " not adding null for snapid " << snapid
<< dendl
;
8044 // create a null dentry
8045 dn
= curdir
->add_null_dentry(path
[depth
]);
8046 dout(20) << " added null " << *dn
<< dendl
;
8049 pdnvec
->push_back(dn
);
8051 pdnvec
->clear(); // do not confuse likes of rdlock_path_pin_ref();
8056 // Check DamageTable for missing fragments before trying to fetch
8058 if (mds
->damage_table
.is_dirfrag_damaged(curdir
)) {
8059 dout(4) << "traverse: damaged dirfrag " << *curdir
8060 << ", blocking fetch" << dendl
;
8064 // directory isn't complete; reload
8065 dout(7) << "traverse: incomplete dir contents for " << *cur
<< ", fetching" << dendl
;
8067 curdir
->fetch(_get_waiter(mdr
, req
, fin
), path
[depth
]);
8068 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_dir_fetch
);
8072 // dirfrag/dentry is not mine.
8073 mds_authority_t dauth
= curdir
->authority();
8076 snapid
&& mdr
&& mdr
->client_request
&&
8077 (int)depth
< mdr
->client_request
->get_num_fwd()) {
8078 dout(7) << "traverse: snap " << snapid
<< " and depth " << depth
8079 << " < fwd " << mdr
->client_request
->get_num_fwd()
8080 << ", discovering instead of forwarding" << dendl
;
8084 if ((discover
|| null_okay
)) {
8085 dout(7) << "traverse: discover from " << path
[depth
] << " from " << *curdir
<< dendl
;
8086 discover_path(curdir
, snapid
, path
.postfixpath(depth
), _get_waiter(mdr
, req
, fin
),
8088 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_discover
);
8093 dout(7) << "traverse: not auth for " << path
<< " in " << *curdir
<< dendl
;
8095 if (curdir
->is_ambiguous_auth()) {
8097 dout(7) << "traverse: waiting for single auth in " << *curdir
<< dendl
;
8098 curdir
->add_waiter(CDir::WAIT_SINGLEAUTH
, _get_waiter(mdr
, req
, fin
));
8102 dout(7) << "traverse: forwarding, not auth for " << *curdir
<< dendl
;
8105 request_forward(mdr
, dauth
.first
);
8107 mds
->forward_message_mds(req
, dauth
.first
);
8109 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_forward
);
8110 assert(fin
== NULL
);
8115 ceph_abort(); // i shouldn't get here
8119 if (mds
->logger
) mds
->logger
->inc(l_mds_traverse_hit
);
8120 dout(10) << "path_traverse finish on snapid " << snapid
<< dendl
;
8122 assert(mdr
->snapid
== snapid
);
8126 CInode
*MDCache::cache_traverse(const filepath
& fp
)
8128 dout(10) << "cache_traverse " << fp
<< dendl
;
8132 in
= get_inode(fp
.get_ino());
8138 for (unsigned i
= 0; i
< fp
.depth(); i
++) {
8139 boost::string_view dname
= fp
[i
];
8140 frag_t fg
= in
->pick_dirfrag(dname
);
8141 dout(20) << " " << i
<< " " << dname
<< " frag " << fg
<< " from " << *in
<< dendl
;
8142 CDir
*curdir
= in
->get_dirfrag(fg
);
8145 CDentry
*dn
= curdir
->lookup(dname
, CEPH_NOSNAP
);
8148 in
= dn
->get_linkage()->get_inode();
8152 dout(10) << " got " << *in
<< dendl
;
8158 * open_remote_dir -- open up a remote dirfrag
8160 * @param diri base inode
8161 * @param approxfg approximate fragment.
8162 * @param fin completion callback
8164 void MDCache::open_remote_dirfrag(CInode
*diri
, frag_t approxfg
, MDSInternalContextBase
*fin
)
8166 dout(10) << "open_remote_dir on " << *diri
<< dendl
;
8167 assert(diri
->is_dir());
8168 assert(!diri
->is_auth());
8169 assert(diri
->get_dirfrag(approxfg
) == 0);
8171 discover_dir_frag(diri
, approxfg
, fin
);
8176 * get_dentry_inode - get or open inode
8178 * @param dn the dentry
8179 * @param mdr current request
8181 * will return inode for primary, or link up/open up remote link's inode as necessary.
8182 * If it's not available right now, puts mdr on wait list and returns null.
8184 CInode
*MDCache::get_dentry_inode(CDentry
*dn
, MDRequestRef
& mdr
, bool projected
)
8186 CDentry::linkage_t
*dnl
;
8188 dnl
= dn
->get_projected_linkage();
8190 dnl
= dn
->get_linkage();
8192 assert(!dnl
->is_null());
8194 if (dnl
->is_primary())
8197 assert(dnl
->is_remote());
8198 CInode
*in
= get_inode(dnl
->get_remote_ino());
8200 dout(7) << "get_dentry_inode linking in remote in " << *in
<< dendl
;
8201 dn
->link_remote(dnl
, in
);
8204 dout(10) << "get_dentry_inode on remote dn, opening inode for " << *dn
<< dendl
;
8205 open_remote_dentry(dn
, projected
, new C_MDS_RetryRequest(this, mdr
));
8210 struct C_MDC_OpenRemoteDentry
: public MDCacheContext
{
8213 MDSInternalContextBase
*onfinish
;
8215 C_MDC_OpenRemoteDentry(MDCache
*m
, CDentry
*d
, inodeno_t i
, MDSInternalContextBase
*f
, bool wx
) :
8216 MDCacheContext(m
), dn(d
), ino(i
), onfinish(f
), want_xlocked(wx
) {
8217 dn
->get(MDSCacheObject::PIN_PTRWAITER
);
8219 void finish(int r
) override
{
8220 mdcache
->_open_remote_dentry_finish(dn
, ino
, onfinish
, want_xlocked
, r
);
8221 dn
->put(MDSCacheObject::PIN_PTRWAITER
);
8225 void MDCache::open_remote_dentry(CDentry
*dn
, bool projected
, MDSInternalContextBase
*fin
, bool want_xlocked
)
8227 dout(10) << "open_remote_dentry " << *dn
<< dendl
;
8228 CDentry::linkage_t
*dnl
= projected
? dn
->get_projected_linkage() : dn
->get_linkage();
8229 inodeno_t ino
= dnl
->get_remote_ino();
8230 int64_t pool
= dnl
->get_remote_d_type() == DT_DIR
? mds
->mdsmap
->get_metadata_pool() : -1;
8232 new C_MDC_OpenRemoteDentry(this, dn
, ino
, fin
, want_xlocked
), true, want_xlocked
); // backtrace
8235 void MDCache::_open_remote_dentry_finish(CDentry
*dn
, inodeno_t ino
, MDSInternalContextBase
*fin
,
8236 bool want_xlocked
, int r
)
8239 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
8240 if (dnl
->is_remote() && dnl
->get_remote_ino() == ino
) {
8241 dout(0) << "open_remote_dentry_finish bad remote dentry " << *dn
<< dendl
;
8242 dn
->state_set(CDentry::STATE_BADREMOTEINO
);
8245 CDir
*dir
= dn
->get_dir();
8247 dir
->get_inode()->make_path_string(path
);
8249 path
+= std::string(dn
->get_name());
8252 bool fatal
= mds
->damage_table
.notify_remote_damaged(ino
, path
);
8255 ceph_abort(); // unreachable, damaged() respawns us
8261 fin
->complete(r
< 0 ? r
: 0);
8265 void MDCache::make_trace(vector
<CDentry
*>& trace
, CInode
*in
)
8267 // empty trace if we're a base inode
8271 CInode
*parent
= in
->get_parent_inode();
8273 make_trace(trace
, parent
);
8275 CDentry
*dn
= in
->get_parent_dn();
8276 dout(15) << "make_trace adding " << *dn
<< dendl
;
8277 trace
.push_back(dn
);
8281 // -------------------------------------------------------------------------------
8282 // Open inode by inode number
8284 class C_IO_MDC_OpenInoBacktraceFetched
: public MDCacheIOContext
{
8288 C_IO_MDC_OpenInoBacktraceFetched(MDCache
*c
, inodeno_t i
) :
8289 MDCacheIOContext(c
), ino(i
) {}
8290 void finish(int r
) override
{
8291 mdcache
->_open_ino_backtrace_fetched(ino
, bl
, r
);
8295 struct C_MDC_OpenInoTraverseDir
: public MDCacheContext
{
8300 C_MDC_OpenInoTraverseDir(MDCache
*c
, inodeno_t i
, MMDSOpenIno
*m
, bool p
) :
8301 MDCacheContext(c
), ino(i
), msg(m
), parent(p
) {}
8302 void finish(int r
) override
{
8303 if (r
< 0 && !parent
)
8306 mdcache
->handle_open_ino(msg
, r
);
8309 assert(mdcache
->opening_inodes
.count(ino
));
8310 mdcache
->_open_ino_traverse_dir(ino
, mdcache
->opening_inodes
[ino
], r
);
8314 struct C_MDC_OpenInoParentOpened
: public MDCacheContext
{
8317 C_MDC_OpenInoParentOpened(MDCache
*c
, inodeno_t i
) : MDCacheContext(c
), ino(i
) {}
8318 void finish(int r
) override
{
8319 mdcache
->_open_ino_parent_opened(ino
, r
);
8323 void MDCache::_open_ino_backtrace_fetched(inodeno_t ino
, bufferlist
& bl
, int err
)
8325 dout(10) << "_open_ino_backtrace_fetched ino " << ino
<< " errno " << err
<< dendl
;
8327 assert(opening_inodes
.count(ino
));
8328 open_ino_info_t
& info
= opening_inodes
[ino
];
8330 CInode
*in
= get_inode(ino
);
8332 dout(10) << " found cached " << *in
<< dendl
;
8333 open_ino_finish(ino
, info
, in
->authority().first
);
8337 inode_backtrace_t backtrace
;
8340 ::decode(backtrace
, bl
);
8341 } catch (const buffer::error
&decode_exc
) {
8342 derr
<< "corrupt backtrace on ino x0" << std::hex
<< ino
8343 << std::dec
<< ": " << decode_exc
<< dendl
;
8344 open_ino_finish(ino
, info
, -EIO
);
8347 if (backtrace
.pool
!= info
.pool
&& backtrace
.pool
!= -1) {
8348 dout(10) << " old object in pool " << info
.pool
8349 << ", retrying pool " << backtrace
.pool
<< dendl
;
8350 info
.pool
= backtrace
.pool
;
8351 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8352 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8353 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8354 new C_OnFinisher(fin
, mds
->finisher
));
8357 } else if (err
== -ENOENT
) {
8358 int64_t meta_pool
= mds
->mdsmap
->get_metadata_pool();
8359 if (info
.pool
!= meta_pool
) {
8360 dout(10) << " no object in pool " << info
.pool
8361 << ", retrying pool " << meta_pool
<< dendl
;
8362 info
.pool
= meta_pool
;
8363 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8364 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8365 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8366 new C_OnFinisher(fin
, mds
->finisher
));
8369 err
= 0; // backtrace.ancestors.empty() is checked below
8373 if (backtrace
.ancestors
.empty()) {
8374 dout(10) << " got empty backtrace " << dendl
;
8376 } else if (!info
.ancestors
.empty()) {
8377 if (info
.ancestors
[0] == backtrace
.ancestors
[0]) {
8378 dout(10) << " got same parents " << info
.ancestors
[0] << " 2 times" << dendl
;
8386 dout(0) << " failed to open ino " << ino
<< " err " << err
<< "/" << info
.last_err
<< dendl
;
8388 err
= info
.last_err
;
8389 open_ino_finish(ino
, info
, err
);
8393 dout(10) << " got backtrace " << backtrace
<< dendl
;
8394 info
.ancestors
= backtrace
.ancestors
;
8396 _open_ino_traverse_dir(ino
, info
, 0);
8399 void MDCache::_open_ino_parent_opened(inodeno_t ino
, int ret
)
8401 dout(10) << "_open_ino_parent_opened ino " << ino
<< " ret " << ret
<< dendl
;
8403 assert(opening_inodes
.count(ino
));
8404 open_ino_info_t
& info
= opening_inodes
[ino
];
8406 CInode
*in
= get_inode(ino
);
8408 dout(10) << " found cached " << *in
<< dendl
;
8409 open_ino_finish(ino
, info
, in
->authority().first
);
8413 if (ret
== mds
->get_nodeid()) {
8414 _open_ino_traverse_dir(ino
, info
, 0);
8417 mds_rank_t checked_rank
= mds_rank_t(ret
);
8418 info
.check_peers
= true;
8419 info
.auth_hint
= checked_rank
;
8420 info
.checked
.erase(checked_rank
);
8422 do_open_ino(ino
, info
, ret
);
8426 void MDCache::_open_ino_traverse_dir(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8428 dout(10) << __func__
<< ": ino " << ino
<< " ret " << ret
<< dendl
;
8430 CInode
*in
= get_inode(ino
);
8432 dout(10) << " found cached " << *in
<< dendl
;
8433 open_ino_finish(ino
, info
, in
->authority().first
);
8438 do_open_ino(ino
, info
, ret
);
8442 mds_rank_t hint
= info
.auth_hint
;
8443 ret
= open_ino_traverse_dir(ino
, NULL
, info
.ancestors
,
8444 info
.discover
, info
.want_xlocked
, &hint
);
8447 if (hint
!= mds
->get_nodeid())
8448 info
.auth_hint
= hint
;
8449 do_open_ino(ino
, info
, ret
);
8452 void MDCache::_open_ino_fetch_dir(inodeno_t ino
, MMDSOpenIno
*m
, CDir
*dir
, bool parent
)
8454 if (dir
->state_test(CDir::STATE_REJOINUNDEF
))
8455 assert(dir
->get_inode()->dirfragtree
.is_leaf(dir
->get_frag()));
8456 dir
->fetch(new C_MDC_OpenInoTraverseDir(this, ino
, m
, parent
));
8459 int MDCache::open_ino_traverse_dir(inodeno_t ino
, MMDSOpenIno
*m
,
8460 vector
<inode_backpointer_t
>& ancestors
,
8461 bool discover
, bool want_xlocked
, mds_rank_t
*hint
)
8463 dout(10) << "open_ino_traverse_dir ino " << ino
<< " " << ancestors
<< dendl
;
8465 for (unsigned i
= 0; i
< ancestors
.size(); i
++) {
8466 CInode
*diri
= get_inode(ancestors
[i
].dirino
);
8469 if (discover
&& MDS_INO_IS_MDSDIR(ancestors
[i
].dirino
)) {
8470 open_foreign_mdsdir(ancestors
[i
].dirino
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8476 if (diri
->state_test(CInode::STATE_REJOINUNDEF
)) {
8477 CDir
*dir
= diri
->get_parent_dir();
8478 while (dir
->state_test(CDir::STATE_REJOINUNDEF
) &&
8479 dir
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
))
8480 dir
= dir
->get_inode()->get_parent_dir();
8481 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8485 if (!diri
->is_dir()) {
8486 dout(10) << " " << *diri
<< " is not dir" << dendl
;
8492 string
&name
= ancestors
[i
].dname
;
8493 frag_t fg
= diri
->pick_dirfrag(name
);
8494 CDir
*dir
= diri
->get_dirfrag(fg
);
8496 if (diri
->is_auth()) {
8497 if (diri
->is_frozen()) {
8498 dout(10) << " " << *diri
<< " is frozen, waiting " << dendl
;
8499 diri
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8502 dir
= diri
->get_or_open_dirfrag(this, fg
);
8503 } else if (discover
) {
8504 open_remote_dirfrag(diri
, fg
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8509 inodeno_t next_ino
= i
> 0 ? ancestors
[i
- 1].dirino
: ino
;
8510 CDentry
*dn
= dir
->lookup(name
);
8511 CDentry::linkage_t
*dnl
= dn
? dn
->get_linkage() : NULL
;
8512 if (dir
->is_auth()) {
8513 if (dnl
&& dnl
->is_primary() &&
8514 dnl
->get_inode()->state_test(CInode::STATE_REJOINUNDEF
)) {
8515 dout(10) << " fetching undef " << *dnl
->get_inode() << dendl
;
8516 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8520 if (!dnl
&& !dir
->is_complete() &&
8521 (!dir
->has_bloom() || dir
->is_in_bloom(name
))) {
8522 dout(10) << " fetching incomplete " << *dir
<< dendl
;
8523 _open_ino_fetch_dir(ino
, m
, dir
, i
== 0);
8527 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8530 } else if (discover
) {
8532 filepath
path(name
, 0);
8533 discover_path(dir
, CEPH_NOSNAP
, path
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0),
8534 (i
== 0 && want_xlocked
));
8537 if (dnl
->is_null() && !dn
->lock
.can_read(-1)) {
8538 dout(10) << " null " << *dn
<< " is not readable, waiting" << dendl
;
8539 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDC_OpenInoTraverseDir(this, ino
, m
, i
== 0));
8542 dout(10) << " no ino " << next_ino
<< " in " << *dir
<< dendl
;
8548 *hint
= dir
? dir
->authority().first
: diri
->authority().first
;
8554 void MDCache::open_ino_finish(inodeno_t ino
, open_ino_info_t
& info
, int ret
)
8556 dout(10) << "open_ino_finish ino " << ino
<< " ret " << ret
<< dendl
;
8558 list
<MDSInternalContextBase
*> waiters
;
8559 waiters
.swap(info
.waiters
);
8560 opening_inodes
.erase(ino
);
8561 finish_contexts(g_ceph_context
, waiters
, ret
);
8564 void MDCache::do_open_ino(inodeno_t ino
, open_ino_info_t
& info
, int err
)
8566 if (err
< 0 && err
!= -EAGAIN
) {
8567 info
.checked
.clear();
8568 info
.checking
= MDS_RANK_NONE
;
8569 info
.check_peers
= true;
8570 info
.fetch_backtrace
= true;
8571 if (info
.discover
) {
8572 info
.discover
= false;
8573 info
.ancestors
.clear();
8575 if (err
!= -ENOENT
&& err
!= -ENOTDIR
)
8576 info
.last_err
= err
;
8579 if (info
.check_peers
|| info
.discover
) {
8580 if (info
.discover
) {
8581 // got backtrace from peer, but failed to find inode. re-check peers
8582 info
.discover
= false;
8583 info
.ancestors
.clear();
8584 info
.checked
.clear();
8586 info
.check_peers
= false;
8587 info
.checking
= MDS_RANK_NONE
;
8588 do_open_ino_peer(ino
, info
);
8589 } else if (info
.fetch_backtrace
) {
8590 info
.check_peers
= true;
8591 info
.fetch_backtrace
= false;
8592 info
.checking
= mds
->get_nodeid();
8593 info
.checked
.clear();
8594 C_IO_MDC_OpenInoBacktraceFetched
*fin
=
8595 new C_IO_MDC_OpenInoBacktraceFetched(this, ino
);
8596 fetch_backtrace(ino
, info
.pool
, fin
->bl
,
8597 new C_OnFinisher(fin
, mds
->finisher
));
8599 assert(!info
.ancestors
.empty());
8600 info
.checking
= mds
->get_nodeid();
8601 open_ino(info
.ancestors
[0].dirino
, mds
->mdsmap
->get_metadata_pool(),
8602 new C_MDC_OpenInoParentOpened(this, ino
), info
.want_replica
);
8606 void MDCache::do_open_ino_peer(inodeno_t ino
, open_ino_info_t
& info
)
8608 set
<mds_rank_t
> all
, active
;
8609 mds
->mdsmap
->get_mds_set(all
);
8610 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8611 if (mds
->get_state() == MDSMap::STATE_REJOIN
)
8612 mds
->mdsmap
->get_mds_set(active
, MDSMap::STATE_REJOIN
);
8614 dout(10) << "do_open_ino_peer " << ino
<< " active " << active
8615 << " all " << all
<< " checked " << info
.checked
<< dendl
;
8617 mds_rank_t peer
= MDS_RANK_NONE
;
8618 if (info
.auth_hint
>= 0) {
8619 if (active
.count(info
.auth_hint
)) {
8620 peer
= info
.auth_hint
;
8621 info
.auth_hint
= MDS_RANK_NONE
;
8624 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8625 if (*p
!= mds
->get_nodeid() && info
.checked
.count(*p
) == 0) {
8631 all
.erase(mds
->get_nodeid());
8632 if (all
!= info
.checked
) {
8633 dout(10) << " waiting for more peers to be active" << dendl
;
8635 dout(10) << " all MDS peers have been checked " << dendl
;
8636 do_open_ino(ino
, info
, 0);
8639 info
.checking
= peer
;
8640 vector
<inode_backpointer_t
> *pa
= NULL
;
8641 // got backtrace from peer or backtrace just fetched
8642 if (info
.discover
|| !info
.fetch_backtrace
)
8643 pa
= &info
.ancestors
;
8644 mds
->send_message_mds(new MMDSOpenIno(info
.tid
, ino
, pa
), peer
);
8648 void MDCache::handle_open_ino(MMDSOpenIno
*m
, int err
)
8650 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
8651 mds
->get_want_state() != CEPH_MDS_STATE_REJOIN
) {
8656 dout(10) << "handle_open_ino " << *m
<< " err " << err
<< dendl
;
8658 inodeno_t ino
= m
->ino
;
8659 MMDSOpenInoReply
*reply
;
8660 CInode
*in
= get_inode(ino
);
8662 dout(10) << " have " << *in
<< dendl
;
8663 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, mds_rank_t(0));
8664 if (in
->is_auth()) {
8667 CDentry
*pdn
= in
->get_parent_dn();
8670 CInode
*diri
= pdn
->get_dir()->get_inode();
8671 reply
->ancestors
.push_back(inode_backpointer_t(diri
->ino(), pdn
->get_name(),
8672 in
->inode
.version
));
8676 reply
->hint
= in
->authority().first
;
8678 } else if (err
< 0) {
8679 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, MDS_RANK_NONE
, err
);
8681 mds_rank_t hint
= MDS_RANK_NONE
;
8682 int ret
= open_ino_traverse_dir(ino
, m
, m
->ancestors
, false, false, &hint
);
8685 reply
= new MMDSOpenInoReply(m
->get_tid(), ino
, hint
, ret
);
8687 m
->get_connection()->send_message(reply
);
8691 void MDCache::handle_open_ino_reply(MMDSOpenInoReply
*m
)
8693 dout(10) << "handle_open_ino_reply " << *m
<< dendl
;
8695 inodeno_t ino
= m
->ino
;
8696 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8697 auto it
= opening_inodes
.find(ino
);
8698 if (it
!= opening_inodes
.end() && it
->second
.checking
== from
) {
8699 open_ino_info_t
& info
= it
->second
;
8700 info
.checking
= MDS_RANK_NONE
;
8701 info
.checked
.insert(from
);
8703 CInode
*in
= get_inode(ino
);
8705 dout(10) << " found cached " << *in
<< dendl
;
8706 open_ino_finish(ino
, info
, in
->authority().first
);
8707 } else if (!m
->ancestors
.empty()) {
8708 dout(10) << " found ino " << ino
<< " on mds." << from
<< dendl
;
8709 if (!info
.want_replica
) {
8710 open_ino_finish(ino
, info
, from
);
8715 info
.ancestors
= m
->ancestors
;
8716 info
.auth_hint
= from
;
8717 info
.checking
= mds
->get_nodeid();
8718 info
.discover
= true;
8719 _open_ino_traverse_dir(ino
, info
, 0);
8720 } else if (m
->error
) {
8721 dout(10) << " error " << m
->error
<< " from mds." << from
<< dendl
;
8722 do_open_ino(ino
, info
, m
->error
);
8724 if (m
->hint
>= 0 && m
->hint
!= mds
->get_nodeid()) {
8725 info
.auth_hint
= m
->hint
;
8726 info
.checked
.erase(m
->hint
);
8728 do_open_ino_peer(ino
, info
);
8734 void MDCache::kick_open_ino_peers(mds_rank_t who
)
8736 dout(10) << "kick_open_ino_peers mds." << who
<< dendl
;
8738 for (map
<inodeno_t
, open_ino_info_t
>::iterator p
= opening_inodes
.begin();
8739 p
!= opening_inodes
.end();
8741 open_ino_info_t
& info
= p
->second
;
8742 if (info
.checking
== who
) {
8743 dout(10) << " kicking ino " << p
->first
<< " who was checking mds." << who
<< dendl
;
8744 info
.checking
= MDS_RANK_NONE
;
8745 do_open_ino_peer(p
->first
, info
);
8746 } else if (info
.checking
== MDS_RANK_NONE
) {
8747 dout(10) << " kicking ino " << p
->first
<< " who was waiting" << dendl
;
8748 do_open_ino_peer(p
->first
, info
);
8753 void MDCache::open_ino(inodeno_t ino
, int64_t pool
, MDSInternalContextBase
* fin
,
8754 bool want_replica
, bool want_xlocked
)
8756 dout(10) << "open_ino " << ino
<< " pool " << pool
<< " want_replica "
8757 << want_replica
<< dendl
;
8759 if (opening_inodes
.count(ino
)) {
8760 open_ino_info_t
& info
= opening_inodes
[ino
];
8762 info
.want_replica
= true;
8763 if (want_xlocked
&& !info
.want_xlocked
) {
8764 if (!info
.ancestors
.empty()) {
8765 CInode
*diri
= get_inode(info
.ancestors
[0].dirino
);
8767 frag_t fg
= diri
->pick_dirfrag(info
.ancestors
[0].dname
);
8768 CDir
*dir
= diri
->get_dirfrag(fg
);
8769 if (dir
&& !dir
->is_auth()) {
8770 filepath
path(info
.ancestors
[0].dname
, 0);
8771 discover_path(dir
, CEPH_NOSNAP
, path
, NULL
, true);
8775 info
.want_xlocked
= true;
8778 info
.waiters
.push_back(fin
);
8780 open_ino_info_t
& info
= opening_inodes
[ino
];
8781 info
.want_replica
= want_replica
;
8782 info
.want_xlocked
= want_xlocked
;
8783 info
.tid
= ++open_ino_last_tid
;
8784 info
.pool
= pool
>= 0 ? pool
: default_file_layout
.pool_id
;
8785 info
.waiters
.push_back(fin
);
8786 do_open_ino(ino
, info
, 0);
8790 /* ---------------------------- */
8793 * search for a given inode on MDS peers. optionally start with the given node.
8797 - recover from mds node failure, recovery
8801 void MDCache::find_ino_peers(inodeno_t ino
, MDSInternalContextBase
*c
, mds_rank_t hint
)
8803 dout(5) << "find_ino_peers " << ino
<< " hint " << hint
<< dendl
;
8804 CInode
*in
= get_inode(ino
);
8805 if (in
&& in
->state_test(CInode::STATE_PURGING
)) {
8806 c
->complete(-ESTALE
);
8811 ceph_tid_t tid
= ++find_ino_peer_last_tid
;
8812 find_ino_peer_info_t
& fip
= find_ino_peer
[tid
];
8817 _do_find_ino_peer(fip
);
8820 void MDCache::_do_find_ino_peer(find_ino_peer_info_t
& fip
)
8822 set
<mds_rank_t
> all
, active
;
8823 mds
->mdsmap
->get_mds_set(all
);
8824 mds
->mdsmap
->get_clientreplay_or_active_or_stopping_mds_set(active
);
8826 dout(10) << "_do_find_ino_peer " << fip
.tid
<< " " << fip
.ino
8827 << " active " << active
<< " all " << all
8828 << " checked " << fip
.checked
8831 mds_rank_t m
= MDS_RANK_NONE
;
8832 if (fip
.hint
>= 0) {
8834 fip
.hint
= MDS_RANK_NONE
;
8836 for (set
<mds_rank_t
>::iterator p
= active
.begin(); p
!= active
.end(); ++p
)
8837 if (*p
!= mds
->get_nodeid() &&
8838 fip
.checked
.count(*p
) == 0) {
8843 if (m
== MDS_RANK_NONE
) {
8844 all
.erase(mds
->get_nodeid());
8845 if (all
!= fip
.checked
) {
8846 dout(10) << "_do_find_ino_peer waiting for more peers to be active" << dendl
;
8848 dout(10) << "_do_find_ino_peer failed on " << fip
.ino
<< dendl
;
8849 fip
.fin
->complete(-ESTALE
);
8850 find_ino_peer
.erase(fip
.tid
);
8854 mds
->send_message_mds(new MMDSFindIno(fip
.tid
, fip
.ino
), m
);
8858 void MDCache::handle_find_ino(MMDSFindIno
*m
)
8860 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
8865 dout(10) << "handle_find_ino " << *m
<< dendl
;
8866 MMDSFindInoReply
*r
= new MMDSFindInoReply(m
->tid
);
8867 CInode
*in
= get_inode(m
->ino
);
8869 in
->make_path(r
->path
);
8870 dout(10) << " have " << r
->path
<< " " << *in
<< dendl
;
8872 m
->get_connection()->send_message(r
);
8877 void MDCache::handle_find_ino_reply(MMDSFindInoReply
*m
)
8879 map
<ceph_tid_t
, find_ino_peer_info_t
>::iterator p
= find_ino_peer
.find(m
->tid
);
8880 if (p
!= find_ino_peer
.end()) {
8881 dout(10) << "handle_find_ino_reply " << *m
<< dendl
;
8882 find_ino_peer_info_t
& fip
= p
->second
;
8885 if (get_inode(fip
.ino
)) {
8886 dout(10) << "handle_find_ino_reply successfully found " << fip
.ino
<< dendl
;
8887 mds
->queue_waiter(fip
.fin
);
8888 find_ino_peer
.erase(p
);
8893 mds_rank_t from
= mds_rank_t(m
->get_source().num());
8894 if (fip
.checking
== from
)
8895 fip
.checking
= MDS_RANK_NONE
;
8896 fip
.checked
.insert(from
);
8898 if (!m
->path
.empty()) {
8900 vector
<CDentry
*> trace
;
8901 MDRequestRef null_ref
;
8902 int r
= path_traverse(null_ref
, m
, NULL
, m
->path
, &trace
, NULL
, MDS_TRAVERSE_DISCOVER
);
8905 dout(0) << "handle_find_ino_reply failed with " << r
<< " on " << m
->path
8906 << ", retrying" << dendl
;
8907 fip
.checked
.clear();
8908 _do_find_ino_peer(fip
);
8911 _do_find_ino_peer(fip
);
8914 dout(10) << "handle_find_ino_reply tid " << m
->tid
<< " dne" << dendl
;
8919 void MDCache::kick_find_ino_peers(mds_rank_t who
)
8921 // find_ino_peers requests we should move on from
8922 for (map
<ceph_tid_t
,find_ino_peer_info_t
>::iterator p
= find_ino_peer
.begin();
8923 p
!= find_ino_peer
.end();
8925 find_ino_peer_info_t
& fip
= p
->second
;
8926 if (fip
.checking
== who
) {
8927 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was checking mds." << who
<< dendl
;
8928 fip
.checking
= MDS_RANK_NONE
;
8929 _do_find_ino_peer(fip
);
8930 } else if (fip
.checking
== MDS_RANK_NONE
) {
8931 dout(10) << "kicking find_ino_peer " << fip
.tid
<< " who was waiting" << dendl
;
8932 _do_find_ino_peer(fip
);
8937 /* ---------------------------- */
8939 int MDCache::get_num_client_requests()
8942 for (ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.begin();
8943 p
!= active_requests
.end();
8945 MDRequestRef
& mdr
= p
->second
;
8946 if (mdr
->reqid
.name
.is_client() && !mdr
->is_slave())
8952 /* This function takes over the reference to the passed Message */
8953 MDRequestRef
MDCache::request_start(MClientRequest
*req
)
8955 // did we win a forward race against a slave?
8956 if (active_requests
.count(req
->get_reqid())) {
8957 MDRequestRef
& mdr
= active_requests
[req
->get_reqid()];
8959 if (mdr
->is_slave()) {
8960 dout(10) << "request_start already had " << *mdr
<< ", waiting for finish" << dendl
;
8961 mdr
->more()->waiting_for_finish
.push_back(new C_MDS_RetryMessage(mds
, req
));
8963 dout(10) << "request_start already processing " << *mdr
<< ", dropping new msg" << dendl
;
8966 return MDRequestRef();
8969 // register new client request
8970 MDRequestImpl::Params params
;
8971 params
.reqid
= req
->get_reqid();
8972 params
.attempt
= req
->get_num_fwd();
8973 params
.client_req
= req
;
8974 params
.initiated
= req
->get_recv_stamp();
8975 params
.throttled
= req
->get_throttle_stamp();
8976 params
.all_read
= req
->get_recv_complete_stamp();
8977 params
.dispatched
= req
->get_dispatch_stamp();
8980 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
8981 active_requests
[params
.reqid
] = mdr
;
8982 mdr
->set_op_stamp(req
->get_stamp());
8983 dout(7) << "request_start " << *mdr
<< dendl
;
8987 MDRequestRef
MDCache::request_start_slave(metareqid_t ri
, __u32 attempt
, Message
*m
)
8989 int by
= m
->get_source().num();
8990 MDRequestImpl::Params params
;
8992 params
.attempt
= attempt
;
8993 params
.triggering_slave_req
= m
;
8994 params
.slave_to
= by
;
8995 params
.initiated
= m
->get_recv_stamp();
8996 params
.throttled
= m
->get_throttle_stamp();
8997 params
.all_read
= m
->get_recv_complete_stamp();
8998 params
.dispatched
= m
->get_dispatch_stamp();
9000 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
9001 assert(active_requests
.count(mdr
->reqid
) == 0);
9002 active_requests
[mdr
->reqid
] = mdr
;
9003 dout(7) << "request_start_slave " << *mdr
<< " by mds." << by
<< dendl
;
9007 MDRequestRef
MDCache::request_start_internal(int op
)
9009 MDRequestImpl::Params params
;
9010 params
.reqid
.name
= entity_name_t::MDS(mds
->get_nodeid());
9011 params
.reqid
.tid
= mds
->issue_tid();
9012 params
.initiated
= ceph_clock_now();
9013 params
.internal_op
= op
;
9015 mds
->op_tracker
.create_request
<MDRequestImpl
,MDRequestImpl::Params
>(params
);
9017 assert(active_requests
.count(mdr
->reqid
) == 0);
9018 active_requests
[mdr
->reqid
] = mdr
;
9019 dout(7) << "request_start_internal " << *mdr
<< " op " << op
<< dendl
;
9023 MDRequestRef
MDCache::request_get(metareqid_t rid
)
9025 ceph::unordered_map
<metareqid_t
, MDRequestRef
>::iterator p
= active_requests
.find(rid
);
9026 assert(p
!= active_requests
.end());
9027 dout(7) << "request_get " << rid
<< " " << *p
->second
<< dendl
;
9031 void MDCache::request_finish(MDRequestRef
& mdr
)
9033 dout(7) << "request_finish " << *mdr
<< dendl
;
9034 mdr
->mark_event("finishing request");
9037 if (mdr
->has_more() && mdr
->more()->slave_commit
) {
9038 Context
*fin
= mdr
->more()->slave_commit
;
9039 mdr
->more()->slave_commit
= 0;
9042 mdr
->aborted
= false;
9044 mdr
->more()->slave_rolling_back
= true;
9047 mdr
->committing
= true;
9049 fin
->complete(ret
); // this must re-call request_finish.
9053 switch(mdr
->internal_op
) {
9054 case CEPH_MDS_OP_FRAGMENTDIR
:
9055 logger
->inc(l_mdss_ireq_fragmentdir
);
9057 case CEPH_MDS_OP_EXPORTDIR
:
9058 logger
->inc(l_mdss_ireq_exportdir
);
9060 case CEPH_MDS_OP_ENQUEUE_SCRUB
:
9061 logger
->inc(l_mdss_ireq_enqueue_scrub
);
9063 case CEPH_MDS_OP_FLUSH
:
9064 logger
->inc(l_mdss_ireq_flush
);
9066 case CEPH_MDS_OP_REPAIR_FRAGSTATS
:
9067 logger
->inc(l_mdss_ireq_fragstats
);
9069 case CEPH_MDS_OP_REPAIR_INODESTATS
:
9070 logger
->inc(l_mdss_ireq_inodestats
);
9074 request_cleanup(mdr
);
9078 void MDCache::request_forward(MDRequestRef
& mdr
, mds_rank_t who
, int port
)
9080 mdr
->mark_event("forwarding request");
9081 if (mdr
->client_request
&& mdr
->client_request
->get_source().is_client()) {
9082 dout(7) << "request_forward " << *mdr
<< " to mds." << who
<< " req "
9083 << *mdr
->client_request
<< dendl
;
9084 mds
->forward_message_mds(mdr
->client_request
, who
);
9085 mdr
->client_request
= 0;
9086 if (mds
->logger
) mds
->logger
->inc(l_mds_forward
);
9087 } else if (mdr
->internal_op
>= 0) {
9088 dout(10) << "request_forward on internal op; cancelling" << dendl
;
9089 mdr
->internal_op_finish
->complete(-EXDEV
);
9091 dout(7) << "request_forward drop " << *mdr
<< " req " << *mdr
->client_request
9092 << " was from mds" << dendl
;
9094 request_cleanup(mdr
);
9098 void MDCache::dispatch_request(MDRequestRef
& mdr
)
9100 if (mdr
->client_request
) {
9101 mds
->server
->dispatch_client_request(mdr
);
9102 } else if (mdr
->slave_request
) {
9103 mds
->server
->dispatch_slave_request(mdr
);
9105 switch (mdr
->internal_op
) {
9106 case CEPH_MDS_OP_FRAGMENTDIR
:
9107 dispatch_fragment_dir(mdr
);
9109 case CEPH_MDS_OP_EXPORTDIR
:
9110 migrator
->dispatch_export_dir(mdr
, 0);
9112 case CEPH_MDS_OP_ENQUEUE_SCRUB
:
9113 enqueue_scrub_work(mdr
);
9115 case CEPH_MDS_OP_FLUSH
:
9116 flush_dentry_work(mdr
);
9118 case CEPH_MDS_OP_REPAIR_FRAGSTATS
:
9119 repair_dirfrag_stats_work(mdr
);
9121 case CEPH_MDS_OP_REPAIR_INODESTATS
:
9122 repair_inode_stats_work(mdr
);
9131 void MDCache::request_drop_foreign_locks(MDRequestRef
& mdr
)
9133 if (!mdr
->has_more())
9137 // (will implicitly drop remote dn pins)
9138 for (set
<mds_rank_t
>::iterator p
= mdr
->more()->slaves
.begin();
9139 p
!= mdr
->more()->slaves
.end();
9141 MMDSSlaveRequest
*r
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
9142 MMDSSlaveRequest::OP_FINISH
);
9144 if (mdr
->killed
&& !mdr
->committing
) {
9146 } else if (mdr
->more()->srcdn_auth_mds
== *p
&&
9147 mdr
->more()->inode_import
.length() > 0) {
9148 // information about rename imported caps
9149 r
->inode_export
.claim(mdr
->more()->inode_import
);
9152 mds
->send_message_mds(r
, *p
);
9155 /* strip foreign xlocks out of lock lists, since the OP_FINISH drops them
9156 * implicitly. Note that we don't call the finishers -- there shouldn't
9157 * be any on a remote lock and the request finish wakes up all
9158 * the waiters anyway! */
9159 set
<SimpleLock
*>::iterator p
= mdr
->xlocks
.begin();
9160 while (p
!= mdr
->xlocks
.end()) {
9161 if ((*p
)->get_parent()->is_auth())
9164 dout(10) << "request_drop_foreign_locks forgetting lock " << **p
9165 << " on " << *(*p
)->get_parent() << dendl
;
9167 mdr
->locks
.erase(*p
);
9168 mdr
->xlocks
.erase(p
++);
9172 map
<SimpleLock
*, mds_rank_t
>::iterator q
= mdr
->remote_wrlocks
.begin();
9173 while (q
!= mdr
->remote_wrlocks
.end()) {
9174 dout(10) << "request_drop_foreign_locks forgetting remote_wrlock " << *q
->first
9175 << " on mds." << q
->second
9176 << " on " << *(q
->first
)->get_parent() << dendl
;
9177 mdr
->locks
.erase(q
->first
);
9178 mdr
->remote_wrlocks
.erase(q
++);
9181 mdr
->more()->slaves
.clear(); /* we no longer have requests out to them, and
9182 * leaving them in can cause double-notifies as
9183 * this function can get called more than once */
9186 void MDCache::request_drop_non_rdlocks(MDRequestRef
& mdr
)
9188 request_drop_foreign_locks(mdr
);
9189 mds
->locker
->drop_non_rdlocks(mdr
.get());
9192 void MDCache::request_drop_locks(MDRequestRef
& mdr
)
9194 request_drop_foreign_locks(mdr
);
9195 mds
->locker
->drop_locks(mdr
.get());
9198 void MDCache::request_cleanup(MDRequestRef
& mdr
)
9200 dout(15) << "request_cleanup " << *mdr
<< dendl
;
9202 if (mdr
->has_more()) {
9203 if (mdr
->more()->is_ambiguous_auth
)
9204 mdr
->clear_ambiguous_auth();
9205 if (!mdr
->more()->waiting_for_finish
.empty())
9206 mds
->queue_waiters(mdr
->more()->waiting_for_finish
);
9209 request_drop_locks(mdr
);
9211 // drop (local) auth pins
9212 mdr
->drop_local_auth_pins();
9215 for (set
<CInode
*>::iterator p
= mdr
->stickydirs
.begin();
9216 p
!= mdr
->stickydirs
.end();
9218 (*p
)->put_stickydirs();
9220 mds
->locker
->kick_cap_releases(mdr
);
9225 // remove from session
9226 mdr
->item_session_request
.remove_myself();
9229 active_requests
.erase(mdr
->reqid
);
9234 mdr
->mark_event("cleaned up request");
9237 void MDCache::request_kill(MDRequestRef
& mdr
)
9239 // rollback slave requests is tricky. just let the request proceed.
9240 if (mdr
->has_more() &&
9241 (!mdr
->more()->witnessed
.empty() || !mdr
->more()->waiting_on_slave
.empty())) {
9242 if (!mdr
->done_locking
) {
9243 assert(mdr
->more()->witnessed
.empty());
9244 mdr
->aborted
= true;
9245 dout(10) << "request_kill " << *mdr
<< " -- waiting for slave reply, delaying" << dendl
;
9247 dout(10) << "request_kill " << *mdr
<< " -- already started slave prep, no-op" << dendl
;
9250 assert(mdr
->used_prealloc_ino
== 0);
9251 assert(mdr
->prealloc_inos
.empty());
9253 mdr
->session
= NULL
;
9254 mdr
->item_session_request
.remove_myself();
9259 mdr
->mark_event("killing request");
9261 if (mdr
->committing
) {
9262 dout(10) << "request_kill " << *mdr
<< " -- already committing, no-op" << dendl
;
9264 dout(10) << "request_kill " << *mdr
<< dendl
;
9265 request_cleanup(mdr
);
9269 // -------------------------------------------------------------------------------
9272 struct C_MDC_snaprealm_create_finish
: public MDCacheLogContext
{
9276 C_MDC_snaprealm_create_finish(MDCache
*c
, MDRequestRef
& m
,
9277 MutationRef
& mu
, CInode
*i
) :
9278 MDCacheLogContext(c
), mdr(m
), mut(mu
), in(i
) {}
9279 void finish(int r
) override
{
9280 mdcache
->_snaprealm_create_finish(mdr
, mut
, in
);
9284 void MDCache::snaprealm_create(MDRequestRef
& mdr
, CInode
*in
)
9286 dout(10) << "snaprealm_create " << *in
<< dendl
;
9287 assert(!in
->snaprealm
);
9290 if (!mdr
->more()->stid
) {
9291 mds
->snapclient
->prepare_create_realm(in
->ino(), &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
9292 new C_MDS_RetryRequest(this, mdr
));
9296 MutationRef
mut(new MutationImpl());
9297 mut
->ls
= mds
->mdlog
->get_current_segment();
9298 EUpdate
*le
= new EUpdate(mds
->mdlog
, "snaprealm_create");
9299 mds
->mdlog
->start_entry(le
);
9301 le
->metablob
.add_table_transaction(TABLE_SNAP
, mdr
->more()->stid
);
9303 auto &pi
= in
->project_inode(false, true);
9304 pi
.inode
.version
= in
->pre_dirty();
9305 pi
.inode
.rstat
.rsnaprealms
++;
9307 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9311 auto &newsnap
= *pi
.snapnode
;
9312 newsnap
.created
= seq
;
9314 newsnap
.last_created
= seq
;
9316 predirty_journal_parents(mut
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
9317 journal_cow_inode(mut
, &le
->metablob
, in
);
9318 le
->metablob
.add_primary_dentry(in
->get_projected_parent_dn(), in
, true);
9320 mds
->server
->submit_mdlog_entry(le
,
9321 new C_MDC_snaprealm_create_finish(this, mdr
,
9324 mds
->mdlog
->flush();
9328 void MDCache::do_realm_invalidate_and_update_notify(CInode
*in
, int snapop
, bool nosend
)
9330 dout(10) << "do_realm_invalidate_and_update_notify " << *in
->snaprealm
<< " " << *in
<< dendl
;
9332 vector
<inodeno_t
> split_inos
;
9333 vector
<inodeno_t
> split_realms
;
9335 if (snapop
== CEPH_SNAP_OP_SPLIT
) {
9336 // notify clients of update|split
9337 for (elist
<CInode
*>::iterator p
= in
->snaprealm
->inodes_with_caps
.begin(member_offset(CInode
, item_caps
));
9339 split_inos
.push_back((*p
)->ino());
9341 for (set
<SnapRealm
*>::iterator p
= in
->snaprealm
->open_children
.begin();
9342 p
!= in
->snaprealm
->open_children
.end();
9344 split_realms
.push_back((*p
)->inode
->ino());
9348 in
->snaprealm
->build_snap_trace(snapbl
);
9350 set
<SnapRealm
*> past_children
;
9351 map
<client_t
, MClientSnap
*> updates
;
9353 q
.push_back(in
->snaprealm
);
9354 while (!q
.empty()) {
9355 SnapRealm
*realm
= q
.front();
9358 dout(10) << " realm " << *realm
<< " on " << *realm
->inode
<< dendl
;
9359 realm
->invalidate_cached_snaps();
9361 for (map
<client_t
, xlist
<Capability
*>* >::iterator p
= realm
->client_caps
.begin();
9362 p
!= realm
->client_caps
.end();
9364 assert(!p
->second
->empty());
9365 if (!nosend
&& updates
.count(p
->first
) == 0) {
9366 MClientSnap
*update
= new MClientSnap(snapop
);
9367 update
->head
.split
= in
->ino();
9368 update
->split_inos
= split_inos
;
9369 update
->split_realms
= split_realms
;
9370 update
->bl
= snapbl
;
9371 updates
[p
->first
] = update
;
9375 if (snapop
== CEPH_SNAP_OP_UPDATE
|| snapop
== CEPH_SNAP_OP_DESTROY
) {
9376 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9377 p
!= realm
->open_past_children
.end();
9379 past_children
.insert(*p
);
9382 // notify for active children, too.
9383 dout(10) << " " << realm
<< " open_children are " << realm
->open_children
<< dendl
;
9384 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9385 p
!= realm
->open_children
.end();
9391 send_snaps(updates
);
9393 // notify past children and their descendants if we update/delete old snapshots
9394 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9395 p
!= past_children
.end();
9399 while (!q
.empty()) {
9400 SnapRealm
*realm
= q
.front();
9403 realm
->invalidate_cached_snaps();
9405 for (set
<SnapRealm
*>::iterator p
= realm
->open_children
.begin();
9406 p
!= realm
->open_children
.end();
9408 if (past_children
.count(*p
) == 0)
9412 for (set
<SnapRealm
*>::iterator p
= realm
->open_past_children
.begin();
9413 p
!= realm
->open_past_children
.end();
9415 if (past_children
.count(*p
) == 0) {
9417 past_children
.insert(*p
);
9422 if (snapop
== CEPH_SNAP_OP_DESTROY
) {
9423 // eval stray inodes if we delete snapshot from their past ancestor snaprealm
9424 for (set
<SnapRealm
*>::iterator p
= past_children
.begin();
9425 p
!= past_children
.end();
9427 maybe_eval_stray((*p
)->inode
, true);
9431 void MDCache::_snaprealm_create_finish(MDRequestRef
& mdr
, MutationRef
& mut
, CInode
*in
)
9433 dout(10) << "_snaprealm_create_finish " << *in
<< dendl
;
9436 in
->pop_and_dirty_projected_inode(mut
->ls
);
9438 mds
->locker
->drop_locks(mut
.get());
9441 // tell table we've committed
9442 mds
->snapclient
->commit(mdr
->more()->stid
, mut
->ls
);
9445 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
9449 in
->open_snaprealm();
9450 in
->snaprealm
->srnode
.seq
= seq
;
9451 in
->snaprealm
->srnode
.created
= seq
;
9452 bool ok
= in
->snaprealm
->_open_parents(NULL
);
9455 do_realm_invalidate_and_update_notify(in
, CEPH_SNAP_OP_SPLIT
);
9458 static int count = 5;
9460 ceph_abort(); // hack test test **********
9464 mdr
->more()->stid
= 0; // caller will likely need to reuse this
9465 dispatch_request(mdr
);
9469 // -------------------------------------------------------------------------------
9472 struct C_MDC_RetryScanStray
: public MDCacheContext
{
9474 C_MDC_RetryScanStray(MDCache
*c
, dirfrag_t n
) : MDCacheContext(c
), next(n
) { }
9475 void finish(int r
) override
{
9476 mdcache
->scan_stray_dir(next
);
9480 void MDCache::scan_stray_dir(dirfrag_t next
)
9482 dout(10) << "scan_stray_dir " << next
<< dendl
;
9485 for (int i
= 0; i
< NUM_STRAY
; ++i
) {
9486 if (strays
[i
]->ino() < next
.ino
)
9488 strays
[i
]->get_dirfrags(ls
);
9491 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
9493 if (dir
->dirfrag() < next
)
9495 if (!dir
->is_complete()) {
9496 dir
->fetch(new C_MDC_RetryScanStray(this, dir
->dirfrag()));
9499 for (auto &p
: dir
->items
) {
9500 CDentry
*dn
= p
.second
;
9501 dn
->state_set(CDentry::STATE_STRAY
);
9502 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
9503 if (dnl
->is_primary()) {
9504 CInode
*in
= dnl
->get_inode();
9505 if (in
->inode
.nlink
== 0)
9506 in
->state_set(CInode::STATE_ORPHAN
);
9507 maybe_eval_stray(in
);
9513 void MDCache::fetch_backtrace(inodeno_t ino
, int64_t pool
, bufferlist
& bl
, Context
*fin
)
9515 object_t oid
= CInode::get_object_name(ino
, frag_t(), "");
9516 mds
->objecter
->getxattr(oid
, object_locator_t(pool
), "parent", CEPH_NOSNAP
, &bl
, 0, fin
);
9523 // ========================================================================================
9527 - for all discovers (except base_inos, e.g. root, stray), waiters are attached
9528 to the parent metadata object in the cache (pinning it).
9530 - all discovers are tracked by tid, so that we can ignore potentially dup replies.
9534 void MDCache::_send_discover(discover_info_t
& d
)
9536 MDiscover
*dis
= new MDiscover(d
.ino
, d
.frag
, d
.snap
, d
.want_path
,
9537 d
.want_base_dir
, d
.want_xlocked
);
9538 dis
->set_tid(d
.tid
);
9539 mds
->send_message_mds(dis
, d
.mds
);
9542 void MDCache::discover_base_ino(inodeno_t want_ino
,
9543 MDSInternalContextBase
*onfinish
,
9546 dout(7) << "discover_base_ino " << want_ino
<< " from mds." << from
<< dendl
;
9547 if (waiting_for_base_ino
[from
].count(want_ino
) == 0) {
9548 discover_info_t
& d
= _create_discover(from
);
9552 waiting_for_base_ino
[from
][want_ino
].push_back(onfinish
);
9556 void MDCache::discover_dir_frag(CInode
*base
,
9558 MDSInternalContextBase
*onfinish
,
9562 from
= base
->authority().first
;
9564 dirfrag_t
df(base
->ino(), approx_fg
);
9565 dout(7) << "discover_dir_frag " << df
9566 << " from mds." << from
<< dendl
;
9568 if (!base
->is_waiting_for_dir(approx_fg
) || !onfinish
) {
9569 discover_info_t
& d
= _create_discover(from
);
9571 d
.ino
= base
->ino();
9573 d
.want_base_dir
= true;
9578 base
->add_dir_waiter(approx_fg
, onfinish
);
9581 struct C_MDC_RetryDiscoverPath
: public MDCacheContext
{
9586 C_MDC_RetryDiscoverPath(MDCache
*c
, CInode
*b
, snapid_t s
, filepath
&p
, mds_rank_t f
) :
9587 MDCacheContext(c
), base(b
), snapid(s
), path(p
), from(f
) {}
9588 void finish(int r
) override
{
9589 mdcache
->discover_path(base
, snapid
, path
, 0, from
);
9593 void MDCache::discover_path(CInode
*base
,
9596 MDSInternalContextBase
*onfinish
,
9601 from
= base
->authority().first
;
9603 dout(7) << "discover_path " << base
->ino() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9604 << (want_xlocked
? " want_xlocked":"")
9607 if (base
->is_ambiguous_auth()) {
9608 dout(10) << " waiting for single auth on " << *base
<< dendl
;
9610 onfinish
= new C_MDC_RetryDiscoverPath(this, base
, snap
, want_path
, from
);
9611 base
->add_waiter(CInode::WAIT_SINGLEAUTH
, onfinish
);
9613 } else if (from
== mds
->get_nodeid()) {
9614 list
<MDSInternalContextBase
*> finished
;
9615 base
->take_waiting(CInode::WAIT_DIR
, finished
);
9616 mds
->queue_waiters(finished
);
9620 frag_t fg
= base
->pick_dirfrag(want_path
[0]);
9621 if ((want_xlocked
&& want_path
.depth() == 1) ||
9622 !base
->is_waiting_for_dir(fg
) || !onfinish
) {
9623 discover_info_t
& d
= _create_discover(from
);
9624 d
.ino
= base
->ino();
9628 d
.want_path
= want_path
;
9629 d
.want_base_dir
= true;
9630 d
.want_xlocked
= want_xlocked
;
9636 base
->add_dir_waiter(fg
, onfinish
);
9639 struct C_MDC_RetryDiscoverPath2
: public MDCacheContext
{
9643 C_MDC_RetryDiscoverPath2(MDCache
*c
, CDir
*b
, snapid_t s
, filepath
&p
) :
9644 MDCacheContext(c
), base(b
), snapid(s
), path(p
) {}
9645 void finish(int r
) override
{
9646 mdcache
->discover_path(base
, snapid
, path
, 0);
9650 void MDCache::discover_path(CDir
*base
,
9653 MDSInternalContextBase
*onfinish
,
9656 mds_rank_t from
= base
->authority().first
;
9658 dout(7) << "discover_path " << base
->dirfrag() << " " << want_path
<< " snap " << snap
<< " from mds." << from
9659 << (want_xlocked
? " want_xlocked":"")
9662 if (base
->is_ambiguous_auth()) {
9663 dout(7) << " waiting for single auth on " << *base
<< dendl
;
9665 onfinish
= new C_MDC_RetryDiscoverPath2(this, base
, snap
, want_path
);
9666 base
->add_waiter(CDir::WAIT_SINGLEAUTH
, onfinish
);
9668 } else if (from
== mds
->get_nodeid()) {
9669 list
<MDSInternalContextBase
*> finished
;
9670 base
->take_sub_waiting(finished
);
9671 mds
->queue_waiters(finished
);
9675 if ((want_xlocked
&& want_path
.depth() == 1) ||
9676 !base
->is_waiting_for_dentry(want_path
[0].c_str(), snap
) || !onfinish
) {
9677 discover_info_t
& d
= _create_discover(from
);
9678 d
.ino
= base
->ino();
9679 d
.pin_base(base
->inode
);
9680 d
.frag
= base
->get_frag();
9682 d
.want_path
= want_path
;
9683 d
.want_base_dir
= false;
9684 d
.want_xlocked
= want_xlocked
;
9690 base
->add_dentry_waiter(want_path
[0], snap
, onfinish
);
9693 void MDCache::kick_discovers(mds_rank_t who
)
9695 for (map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.begin();
9696 p
!= discovers
.end();
9698 if (p
->second
.mds
!= who
)
9700 _send_discover(p
->second
);
9705 /* This function DOES put the passed message before returning */
9706 void MDCache::handle_discover(MDiscover
*dis
)
9708 mds_rank_t whoami
= mds
->get_nodeid();
9709 mds_rank_t from
= mds_rank_t(dis
->get_source().num());
9711 assert(from
!= whoami
);
9713 if (mds
->get_state() <= MDSMap::STATE_REJOIN
) {
9714 if (mds
->get_state() < MDSMap::STATE_REJOIN
&&
9715 mds
->get_want_state() < CEPH_MDS_STATE_REJOIN
) {
9720 // proceed if requester is in the REJOIN stage, the request is from parallel_fetch().
9721 // delay processing request from survivor because we may not yet choose lock states.
9722 if (!mds
->mdsmap
->is_rejoin(from
)) {
9723 dout(0) << "discover_reply not yet active(|still rejoining), delaying" << dendl
;
9724 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, dis
));
9731 MDiscoverReply
*reply
= new MDiscoverReply(dis
);
9733 snapid_t snapid
= dis
->get_snapid();
9736 if (MDS_INO_IS_BASE(dis
->get_base_ino()) &&
9737 !dis
->wants_base_dir() && dis
->get_want().depth() == 0) {
9739 dout(7) << "handle_discover from mds." << from
9740 << " wants base + " << dis
->get_want().get_path()
9741 << " snap " << snapid
9744 cur
= get_inode(dis
->get_base_ino());
9748 reply
->starts_with
= MDiscoverReply::INODE
;
9749 replicate_inode(cur
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9750 dout(10) << "added base " << *cur
<< dendl
;
9753 // there's a base inode
9754 cur
= get_inode(dis
->get_base_ino(), snapid
);
9755 if (!cur
&& snapid
!= CEPH_NOSNAP
) {
9756 cur
= get_inode(dis
->get_base_ino());
9757 if (cur
&& !cur
->is_multiversion())
9758 cur
= NULL
; // nope!
9762 dout(7) << "handle_discover mds." << from
9763 << " don't have base ino " << dis
->get_base_ino() << "." << snapid
9765 if (!dis
->wants_base_dir() && dis
->get_want().depth() > 0)
9766 reply
->set_error_dentry(dis
->get_dentry(0));
9767 reply
->set_flag_error_dir();
9768 } else if (dis
->wants_base_dir()) {
9769 dout(7) << "handle_discover mds." << from
9770 << " wants basedir+" << dis
->get_want().get_path()
9774 dout(7) << "handle_discover mds." << from
9775 << " wants " << dis
->get_want().get_path()
9784 // do some fidgeting to include a dir if they asked for the base dir, or just root.
9785 for (unsigned i
= 0;
9786 cur
&& (i
< dis
->get_want().depth() || dis
->get_want().depth() == 0);
9789 // -- figure out the dir
9791 // is *cur even a dir at all?
9792 if (!cur
->is_dir()) {
9793 dout(7) << *cur
<< " not a dir" << dendl
;
9794 reply
->set_flag_error_dir();
9800 if (dis
->get_want().depth()) {
9802 fg
= cur
->pick_dirfrag(dis
->get_dentry(i
));
9804 // requester explicity specified the frag
9805 assert(dis
->wants_base_dir() || MDS_INO_IS_BASE(dis
->get_base_ino()));
9806 fg
= dis
->get_base_dir_frag();
9807 if (!cur
->dirfragtree
.is_leaf(fg
))
9808 fg
= cur
->dirfragtree
[fg
.value()];
9810 CDir
*curdir
= cur
->get_dirfrag(fg
);
9812 if ((!curdir
&& !cur
->is_auth()) ||
9813 (curdir
&& !curdir
->is_auth())) {
9816 * ONLY set flag if empty!!
9817 * otherwise requester will wake up waiter(s) _and_ continue with discover,
9818 * resulting in duplicate discovers in flight,
9819 * which can wreak havoc when discovering rename srcdn (which may move)
9822 if (reply
->is_empty()) {
9823 // only hint if empty.
9824 // someday this could be better, but right now the waiter logic isn't smart enough.
9828 dout(7) << " not dirfrag auth, setting dir_auth_hint for " << *curdir
<< dendl
;
9829 reply
->set_dir_auth_hint(curdir
->authority().first
);
9831 dout(7) << " dirfrag not open, not inode auth, setting dir_auth_hint for "
9833 reply
->set_dir_auth_hint(cur
->authority().first
);
9836 // note error dentry, if any
9837 // NOTE: important, as it allows requester to issue an equivalent discover
9838 // to whomever we hint at.
9839 if (dis
->get_want().depth() > i
)
9840 reply
->set_error_dentry(dis
->get_dentry(i
));
9846 if (!curdir
) { // open dir?
9847 if (cur
->is_frozen()) {
9848 if (!reply
->is_empty()) {
9849 dout(7) << *cur
<< " is frozen, non-empty reply, stopping" << dendl
;
9852 dout(7) << *cur
<< " is frozen, empty reply, waiting" << dendl
;
9853 cur
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9857 curdir
= cur
->get_or_open_dirfrag(this, fg
);
9858 } else if (curdir
->is_frozen_tree() ||
9859 (curdir
->is_frozen_dir() && fragment_are_all_frozen(curdir
))) {
9860 if (!reply
->is_empty()) {
9861 dout(7) << *curdir
<< " is frozen, non-empty reply, stopping" << dendl
;
9864 if (dis
->wants_base_dir() && dis
->get_base_dir_frag() != curdir
->get_frag()) {
9865 dout(7) << *curdir
<< " is frozen, dirfrag mismatch, stopping" << dendl
;
9866 reply
->set_flag_error_dir();
9869 dout(7) << *curdir
<< " is frozen, empty reply, waiting" << dendl
;
9870 curdir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9876 if (curdir
->get_version() == 0) {
9877 // fetch newly opened dir
9878 } else if (reply
->is_empty() && !dis
->wants_base_dir()) {
9879 dout(7) << "handle_discover not adding unwanted base dir " << *curdir
<< dendl
;
9880 // make sure the base frag is correct, though, in there was a refragment since the
9881 // original request was sent.
9882 reply
->set_base_dir_frag(curdir
->get_frag());
9884 assert(!curdir
->is_ambiguous_auth()); // would be frozen.
9885 if (!reply
->trace
.length())
9886 reply
->starts_with
= MDiscoverReply::DIR;
9887 replicate_dir(curdir
, from
, reply
->trace
);
9888 dout(7) << "handle_discover added dir " << *curdir
<< dendl
;
9893 if (curdir
->get_version() == 0) {
9894 // fetch newly opened dir
9895 assert(!curdir
->has_bloom());
9896 } else if (dis
->get_want().depth() > 0) {
9898 dn
= curdir
->lookup(dis
->get_dentry(i
), snapid
);
9904 if (!curdir
->is_complete() &&
9905 (!curdir
->has_bloom() || curdir
->is_in_bloom(dis
->get_dentry(i
)))) {
9907 dout(7) << "incomplete dir contents for " << *curdir
<< ", fetching" << dendl
;
9908 if (reply
->is_empty()) {
9910 curdir
->fetch(new C_MDS_RetryMessage(mds
, dis
),
9911 dis
->wants_base_dir() && curdir
->get_version() == 0);
9915 // initiate fetch, but send what we have so far
9922 dout(7) << "dentry " << dis
->get_dentry(i
) << " dne, returning null in "
9923 << *curdir
<< dendl
;
9924 dn
= curdir
->add_null_dentry(dis
->get_dentry(i
));
9928 // don't add replica to purging dentry/inode
9929 if (dn
->state_test(CDentry::STATE_PURGING
)) {
9930 if (reply
->is_empty())
9931 reply
->set_flag_error_dn(dis
->get_dentry(i
));
9935 CDentry::linkage_t
*dnl
= dn
->get_linkage();
9938 // ...always block on non-tail items (they are unrelated)
9939 // ...allow xlocked tail disocvery _only_ if explicitly requested
9940 bool tailitem
= (dis
->get_want().depth() == 0) || (i
== dis
->get_want().depth() - 1);
9941 if (dn
->lock
.is_xlocked()) {
9942 // is this the last (tail) item in the discover traversal?
9943 if (tailitem
&& dis
->wants_xlocked()) {
9944 dout(7) << "handle_discover allowing discovery of xlocked tail " << *dn
<< dendl
;
9945 } else if (reply
->is_empty()) {
9946 dout(7) << "handle_discover blocking on xlocked " << *dn
<< dendl
;
9947 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDS_RetryMessage(mds
, dis
));
9951 dout(7) << "handle_discover non-empty reply, xlocked tail " << *dn
<< dendl
;
9957 if (dnl
->is_primary() && dnl
->get_inode()->is_frozen_inode()) {
9958 if (tailitem
&& dis
->wants_xlocked()) {
9959 dout(7) << "handle_discover allowing discovery of frozen tail " << *dnl
->get_inode() << dendl
;
9960 } else if (reply
->is_empty()) {
9961 dout(7) << *dnl
->get_inode() << " is frozen, empty reply, waiting" << dendl
;
9962 dnl
->get_inode()->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryMessage(mds
, dis
));
9966 dout(7) << *dnl
->get_inode() << " is frozen, non-empty reply, stopping" << dendl
;
9972 if (!reply
->trace
.length())
9973 reply
->starts_with
= MDiscoverReply::DENTRY
;
9974 replicate_dentry(dn
, from
, reply
->trace
);
9975 dout(7) << "handle_discover added dentry " << *dn
<< dendl
;
9977 if (!dnl
->is_primary()) break; // stop on null or remote link.
9980 CInode
*next
= dnl
->get_inode();
9981 assert(next
->is_auth());
9983 replicate_inode(next
, from
, reply
->trace
, mds
->mdsmap
->get_up_features());
9984 dout(7) << "handle_discover added inode " << *next
<< dendl
;
9986 // descend, keep going.
9992 assert(!reply
->is_empty());
9993 dout(7) << "handle_discover sending result back to asker mds." << from
<< dendl
;
9994 mds
->send_message(reply
, dis
->get_connection());
9999 /* This function DOES put the passed message before returning */
10000 void MDCache::handle_discover_reply(MDiscoverReply
*m
)
10003 if (mds->get_state() < MDSMap::STATE_ACTIVE) {
10004 dout(0) << "discover_reply NOT ACTIVE YET" << dendl;
10009 dout(7) << "discover_reply " << *m
<< dendl
;
10010 if (m
->is_flag_error_dir())
10011 dout(7) << " flag error, dir" << dendl
;
10012 if (m
->is_flag_error_dn())
10013 dout(7) << " flag error, dentry = " << m
->get_error_dentry() << dendl
;
10015 list
<MDSInternalContextBase
*> finished
, error
;
10016 mds_rank_t from
= mds_rank_t(m
->get_source().num());
10019 CInode
*cur
= get_inode(m
->get_base_ino());
10020 bufferlist::iterator p
= m
->trace
.begin();
10022 int next
= m
->starts_with
;
10024 // decrement discover counters
10025 if (m
->get_tid()) {
10026 map
<ceph_tid_t
,discover_info_t
>::iterator p
= discovers
.find(m
->get_tid());
10027 if (p
!= discovers
.end()) {
10028 dout(10) << " found tid " << m
->get_tid() << dendl
;
10029 discovers
.erase(p
);
10031 dout(10) << " tid " << m
->get_tid() << " not found, must be dup reply" << dendl
;
10035 // discover may start with an inode
10036 if (!p
.end() && next
== MDiscoverReply::INODE
) {
10037 cur
= add_replica_inode(p
, NULL
, finished
);
10038 dout(7) << "discover_reply got base inode " << *cur
<< dendl
;
10039 assert(cur
->is_base());
10041 next
= MDiscoverReply::DIR;
10044 if (cur
->is_base() &&
10045 waiting_for_base_ino
[from
].count(cur
->ino())) {
10046 finished
.swap(waiting_for_base_ino
[from
][cur
->ino()]);
10047 waiting_for_base_ino
[from
].erase(cur
->ino());
10052 // loop over discover results.
10053 // indexes follow each ([[dir] dentry] inode)
10054 // can start, end with any type.
10059 if (next
== MDiscoverReply::DIR) {
10060 curdir
= add_replica_dir(p
, cur
, mds_rank_t(m
->get_source().num()), finished
);
10061 if (cur
->ino() == m
->get_base_ino() && curdir
->get_frag() != m
->get_base_dir_frag()) {
10062 assert(m
->get_wanted_base_dir());
10063 cur
->take_dir_waiting(m
->get_base_dir_frag(), finished
);
10066 // note: this can only happen our first way around this loop.
10067 if (p
.end() && m
->is_flag_error_dn()) {
10068 fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10069 curdir
= cur
->get_dirfrag(fg
);
10071 curdir
= cur
->get_dirfrag(m
->get_base_dir_frag());
10078 CDentry
*dn
= add_replica_dentry(p
, curdir
, finished
);
10084 cur
= add_replica_inode(p
, dn
, finished
);
10086 next
= MDiscoverReply::DIR;
10090 // or dir_auth hint?
10091 if (m
->is_flag_error_dir() && !cur
->is_dir()) {
10093 cur
->take_waiting(CInode::WAIT_DIR
, error
);
10094 } else if (m
->is_flag_error_dir() || m
->get_dir_auth_hint() != CDIR_AUTH_UNKNOWN
) {
10095 mds_rank_t who
= m
->get_dir_auth_hint();
10096 if (who
== mds
->get_nodeid()) who
= -1;
10098 dout(7) << " dir_auth_hint is " << m
->get_dir_auth_hint() << dendl
;
10101 if (m
->get_wanted_base_dir()) {
10102 frag_t fg
= m
->get_base_dir_frag();
10103 CDir
*dir
= cur
->get_dirfrag(fg
);
10105 if (cur
->is_waiting_for_dir(fg
)) {
10106 if (cur
->is_auth())
10107 cur
->take_waiting(CInode::WAIT_DIR
, finished
);
10108 else if (dir
|| !cur
->dirfragtree
.is_leaf(fg
))
10109 cur
->take_dir_waiting(fg
, finished
);
10111 discover_dir_frag(cur
, fg
, 0, who
);
10113 dout(7) << " doing nothing, nobody is waiting for dir" << dendl
;
10117 if (m
->get_error_dentry().length()) {
10118 frag_t fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10119 CDir
*dir
= cur
->get_dirfrag(fg
);
10121 if (dir
&& dir
->is_waiting_for_dentry(m
->get_error_dentry(), m
->get_wanted_snapid())) {
10122 if (dir
->is_auth() || dir
->lookup(m
->get_error_dentry())) {
10123 dir
->take_dentry_waiting(m
->get_error_dentry(), m
->get_wanted_snapid(),
10124 m
->get_wanted_snapid(), finished
);
10126 filepath
relpath(m
->get_error_dentry(), 0);
10127 discover_path(dir
, m
->get_wanted_snapid(), relpath
, 0, m
->get_wanted_xlocked());
10130 dout(7) << " doing nothing, have dir but nobody is waiting on dentry "
10131 << m
->get_error_dentry() << dendl
;
10133 } else if (m
->is_flag_error_dn()) {
10134 frag_t fg
= cur
->pick_dirfrag(m
->get_error_dentry());
10135 CDir
*dir
= cur
->get_dirfrag(fg
);
10137 if (dir
->is_auth()) {
10138 dir
->take_sub_waiting(finished
);
10140 dir
->take_dentry_waiting(m
->get_error_dentry(), m
->get_wanted_snapid(),
10141 m
->get_wanted_snapid(), error
);
10147 finish_contexts(g_ceph_context
, error
, -ENOENT
); // finish errors directly
10148 mds
->queue_waiters(finished
);
10156 // ----------------------------
10160 void MDCache::replicate_dir(CDir
*dir
, mds_rank_t to
, bufferlist
& bl
)
10162 dirfrag_t df
= dir
->dirfrag();
10164 dir
->encode_replica(to
, bl
);
10167 void MDCache::replicate_dentry(CDentry
*dn
, mds_rank_t to
, bufferlist
& bl
)
10169 ::encode(dn
->get_name(), bl
);
10170 ::encode(dn
->last
, bl
);
10171 dn
->encode_replica(to
, bl
, mds
->get_state() < MDSMap::STATE_ACTIVE
);
10174 void MDCache::replicate_inode(CInode
*in
, mds_rank_t to
, bufferlist
& bl
,
10177 ::encode(in
->inode
.ino
, bl
); // bleh, minor assymetry here
10178 ::encode(in
->last
, bl
);
10179 in
->encode_replica(to
, bl
, features
, mds
->get_state() < MDSMap::STATE_ACTIVE
);
10182 CDir
*MDCache::add_replica_dir(bufferlist::iterator
& p
, CInode
*diri
, mds_rank_t from
,
10183 list
<MDSInternalContextBase
*>& finished
)
10188 assert(diri
->ino() == df
.ino
);
10190 // add it (_replica_)
10191 CDir
*dir
= diri
->get_dirfrag(df
.frag
);
10194 // had replica. update w/ new nonce.
10195 dir
->decode_replica(p
);
10196 dout(7) << "add_replica_dir had " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10198 // force frag to leaf in the diri tree
10199 if (!diri
->dirfragtree
.is_leaf(df
.frag
)) {
10200 dout(7) << "add_replica_dir forcing frag " << df
.frag
<< " to leaf in the fragtree "
10201 << diri
->dirfragtree
<< dendl
;
10202 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, df
.frag
);
10206 dir
= diri
->add_dirfrag( new CDir(diri
, df
.frag
, this, false) );
10207 dir
->decode_replica(p
);
10209 // is this a dir_auth delegation boundary?
10210 if (from
!= diri
->authority().first
||
10211 diri
->is_ambiguous_auth() ||
10213 adjust_subtree_auth(dir
, from
);
10215 dout(7) << "add_replica_dir added " << *dir
<< " nonce " << dir
->replica_nonce
<< dendl
;
10218 diri
->take_dir_waiting(df
.frag
, finished
);
10224 CDentry
*MDCache::add_replica_dentry(bufferlist::iterator
& p
, CDir
*dir
, list
<MDSInternalContextBase
*>& finished
)
10231 CDentry
*dn
= dir
->lookup(name
, last
);
10235 dn
->decode_replica(p
, false);
10236 dout(7) << "add_replica_dentry had " << *dn
<< dendl
;
10238 dn
= dir
->add_null_dentry(name
, 1 /* this will get updated below */, last
);
10239 dn
->decode_replica(p
, true);
10240 dout(7) << "add_replica_dentry added " << *dn
<< dendl
;
10243 dir
->take_dentry_waiting(name
, dn
->first
, dn
->last
, finished
);
10248 CInode
*MDCache::add_replica_inode(bufferlist::iterator
& p
, CDentry
*dn
, list
<MDSInternalContextBase
*>& finished
)
10254 CInode
*in
= get_inode(ino
, last
);
10256 in
= new CInode(this, false, 1, last
);
10257 in
->decode_replica(p
, true);
10259 if (in
->ino() == MDS_INO_ROOT
)
10260 in
->inode_auth
.first
= 0;
10261 else if (in
->is_mdsdir())
10262 in
->inode_auth
.first
= in
->ino() - MDS_INO_MDSDIR_OFFSET
;
10263 dout(10) << "add_replica_inode added " << *in
<< dendl
;
10265 assert(dn
->get_linkage()->is_null());
10266 dn
->dir
->link_primary_inode(dn
, in
);
10269 in
->decode_replica(p
, false);
10270 dout(10) << "add_replica_inode had " << *in
<< dendl
;
10274 if (!dn
->get_linkage()->is_primary() || dn
->get_linkage()->get_inode() != in
)
10275 dout(10) << "add_replica_inode different linkage in dentry " << *dn
<< dendl
;
10282 void MDCache::replicate_stray(CDentry
*straydn
, mds_rank_t who
, bufferlist
& bl
)
10284 uint64_t features
= mds
->mdsmap
->get_up_features();
10285 replicate_inode(get_myin(), who
, bl
, features
);
10286 replicate_dir(straydn
->get_dir()->inode
->get_parent_dn()->get_dir(), who
, bl
);
10287 replicate_dentry(straydn
->get_dir()->inode
->get_parent_dn(), who
, bl
);
10288 replicate_inode(straydn
->get_dir()->inode
, who
, bl
, features
);
10289 replicate_dir(straydn
->get_dir(), who
, bl
);
10290 replicate_dentry(straydn
, who
, bl
);
10293 CDentry
*MDCache::add_replica_stray(bufferlist
&bl
, mds_rank_t from
)
10295 list
<MDSInternalContextBase
*> finished
;
10296 bufferlist::iterator p
= bl
.begin();
10298 CInode
*mdsin
= add_replica_inode(p
, NULL
, finished
);
10299 CDir
*mdsdir
= add_replica_dir(p
, mdsin
, from
, finished
);
10300 CDentry
*straydirdn
= add_replica_dentry(p
, mdsdir
, finished
);
10301 CInode
*strayin
= add_replica_inode(p
, straydirdn
, finished
);
10302 CDir
*straydir
= add_replica_dir(p
, strayin
, from
, finished
);
10303 CDentry
*straydn
= add_replica_dentry(p
, straydir
, finished
);
10304 if (!finished
.empty())
10305 mds
->queue_waiters(finished
);
10311 int MDCache::send_dir_updates(CDir
*dir
, bool bcast
)
10313 // this is an FYI, re: replication
10315 set
<mds_rank_t
> who
;
10317 mds
->get_mds_map()->get_active_mds_set(who
);
10319 for (const auto &p
: dir
->get_replicas()) {
10320 who
.insert(p
.first
);
10324 dout(7) << "sending dir_update on " << *dir
<< " bcast " << bcast
<< " to " << who
<< dendl
;
10327 dir
->inode
->make_path(path
);
10329 mds_rank_t whoami
= mds
->get_nodeid();
10330 for (set
<mds_rank_t
>::iterator it
= who
.begin();
10333 if (*it
== whoami
) continue;
10334 //if (*it == except) continue;
10335 dout(7) << "sending dir_update on " << *dir
<< " to " << *it
<< dendl
;
10337 std::set
<int32_t> s
;
10338 for (const auto &r
: dir
->dir_rep_by
) {
10341 mds
->send_message_mds(new MDirUpdate(mds
->get_nodeid(),
10353 /* This function DOES put the passed message before returning */
10354 void MDCache::handle_dir_update(MDirUpdate
*m
)
10356 dirfrag_t df
= m
->get_dirfrag();
10357 CDir
*dir
= get_dirfrag(df
);
10359 dout(5) << "dir_update on " << df
<< ", don't have it" << dendl
;
10362 if (m
->should_discover()) {
10364 // this is key to avoid a fragtree update race, among other things.
10365 m
->inc_tried_discover();
10366 vector
<CDentry
*> trace
;
10368 filepath path
= m
->get_path();
10369 dout(5) << "trying discover on dir_update for " << path
<< dendl
;
10370 MDRequestRef null_ref
;
10371 int r
= path_traverse(null_ref
, m
, NULL
, path
, &trace
, &in
, MDS_TRAVERSE_DISCOVER
);
10375 in
->ino() == df
.ino
&&
10376 in
->get_approx_dirfrag(df
.frag
) == NULL
) {
10377 open_remote_dirfrag(in
, df
.frag
, new C_MDS_RetryMessage(mds
, m
));
10386 if (!m
->has_tried_discover()) {
10387 // Update if it already exists. Othwerwise it got updated by discover reply.
10388 dout(5) << "dir_update on " << *dir
<< dendl
;
10389 dir
->dir_rep
= m
->get_dir_rep();
10390 dir
->dir_rep_by
.clear();
10391 for (const auto &e
: m
->get_dir_rep_by()) {
10392 dir
->dir_rep_by
.insert(e
);
10406 void MDCache::send_dentry_link(CDentry
*dn
, MDRequestRef
& mdr
)
10408 dout(7) << "send_dentry_link " << *dn
<< dendl
;
10410 CDir
*subtree
= get_subtree_root(dn
->get_dir());
10411 for (const auto &p
: dn
->get_replicas()) {
10412 // don't tell (rename) witnesses; they already know
10413 if (mdr
.get() && mdr
->more()->witnessed
.count(p
.first
))
10415 if (mds
->mdsmap
->get_state(p
.first
) < MDSMap::STATE_REJOIN
||
10416 (mds
->mdsmap
->get_state(p
.first
) == MDSMap::STATE_REJOIN
&&
10417 rejoin_gather
.count(p
.first
)))
10419 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10420 MDentryLink
*m
= new MDentryLink(subtree
->dirfrag(), dn
->get_dir()->dirfrag(),
10421 dn
->get_name(), dnl
->is_primary());
10422 if (dnl
->is_primary()) {
10423 dout(10) << " primary " << *dnl
->get_inode() << dendl
;
10424 replicate_inode(dnl
->get_inode(), p
.first
, m
->bl
,
10425 mds
->mdsmap
->get_up_features());
10426 } else if (dnl
->is_remote()) {
10427 inodeno_t ino
= dnl
->get_remote_ino();
10428 __u8 d_type
= dnl
->get_remote_d_type();
10429 dout(10) << " remote " << ino
<< " " << d_type
<< dendl
;
10430 ::encode(ino
, m
->bl
);
10431 ::encode(d_type
, m
->bl
);
10433 ceph_abort(); // aie, bad caller!
10434 mds
->send_message_mds(m
, p
.first
);
10438 /* This function DOES put the passed message before returning */
10439 void MDCache::handle_dentry_link(MDentryLink
*m
)
10442 CDentry
*dn
= NULL
;
10443 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10445 dout(7) << "handle_dentry_link don't have dirfrag " << m
->get_dirfrag() << dendl
;
10447 dn
= dir
->lookup(m
->get_dn());
10449 dout(7) << "handle_dentry_link don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10451 dout(7) << "handle_dentry_link on " << *dn
<< dendl
;
10452 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10454 assert(!dn
->is_auth());
10455 assert(dnl
->is_null());
10459 bufferlist::iterator p
= m
->bl
.begin();
10460 list
<MDSInternalContextBase
*> finished
;
10462 if (m
->get_is_primary()) {
10464 add_replica_inode(p
, dn
, finished
);
10466 // remote link, easy enough.
10470 ::decode(d_type
, p
);
10471 dir
->link_remote_inode(dn
, ino
, d_type
);
10477 if (!finished
.empty())
10478 mds
->queue_waiters(finished
);
10487 void MDCache::send_dentry_unlink(CDentry
*dn
, CDentry
*straydn
, MDRequestRef
& mdr
)
10489 dout(10) << "send_dentry_unlink " << *dn
<< dendl
;
10490 // share unlink news with replicas
10491 set
<mds_rank_t
> replicas
;
10492 dn
->list_replicas(replicas
);
10494 straydn
->list_replicas(replicas
);
10495 for (set
<mds_rank_t
>::iterator it
= replicas
.begin();
10496 it
!= replicas
.end();
10498 // don't tell (rmdir) witnesses; they already know
10499 if (mdr
.get() && mdr
->more()->witnessed
.count(*it
))
10502 if (mds
->mdsmap
->get_state(*it
) < MDSMap::STATE_REJOIN
||
10503 (mds
->mdsmap
->get_state(*it
) == MDSMap::STATE_REJOIN
&&
10504 rejoin_gather
.count(*it
)))
10507 MDentryUnlink
*unlink
= new MDentryUnlink(dn
->get_dir()->dirfrag(), dn
->get_name());
10509 replicate_stray(straydn
, *it
, unlink
->straybl
);
10510 mds
->send_message_mds(unlink
, *it
);
10514 /* This function DOES put the passed message before returning */
10515 void MDCache::handle_dentry_unlink(MDentryUnlink
*m
)
10518 CDentry
*straydn
= NULL
;
10519 if (m
->straybl
.length())
10520 straydn
= add_replica_stray(m
->straybl
, mds_rank_t(m
->get_source().num()));
10522 CDir
*dir
= get_dirfrag(m
->get_dirfrag());
10524 dout(7) << "handle_dentry_unlink don't have dirfrag " << m
->get_dirfrag() << dendl
;
10526 CDentry
*dn
= dir
->lookup(m
->get_dn());
10528 dout(7) << "handle_dentry_unlink don't have dentry " << *dir
<< " dn " << m
->get_dn() << dendl
;
10530 dout(7) << "handle_dentry_unlink on " << *dn
<< dendl
;
10531 CDentry::linkage_t
*dnl
= dn
->get_linkage();
10534 if (dnl
->is_primary()) {
10535 CInode
*in
= dnl
->get_inode();
10536 dn
->dir
->unlink_inode(dn
);
10538 straydn
->dir
->link_primary_inode(straydn
, in
);
10540 // in->first is lazily updated on replica; drag it forward so
10541 // that we always keep it in sync with the dnq
10542 assert(straydn
->first
>= in
->first
);
10543 in
->first
= straydn
->first
;
10545 // update subtree map?
10547 adjust_subtree_after_rename(in
, dir
, false);
10549 // send caps to auth (if we're not already)
10550 if (in
->is_any_caps() &&
10551 !in
->state_test(CInode::STATE_EXPORTINGCAPS
))
10552 migrator
->export_caps(in
);
10557 assert(dnl
->is_remote());
10558 dn
->dir
->unlink_inode(dn
);
10560 assert(dnl
->is_null());
10564 // race with trim_dentry()
10566 assert(straydn
->get_num_ref() == 0);
10567 assert(straydn
->get_linkage()->is_null());
10568 map
<mds_rank_t
, MCacheExpire
*> expiremap
;
10569 trim_dentry(straydn
, expiremap
);
10570 send_expire_messages(expiremap
);
10582 // ===================================================================
10586 // ===================================================================
10591 * adjust_dir_fragments -- adjust fragmentation for a directory
10593 * @param diri directory inode
10594 * @param basefrag base fragment
10595 * @param bits bit adjustment. positive for split, negative for merge.
10597 void MDCache::adjust_dir_fragments(CInode
*diri
, frag_t basefrag
, int bits
,
10598 list
<CDir
*>& resultfrags
,
10599 list
<MDSInternalContextBase
*>& waiters
,
10602 dout(10) << "adjust_dir_fragments " << basefrag
<< " " << bits
10603 << " on " << *diri
<< dendl
;
10605 list
<CDir
*> srcfrags
;
10606 diri
->get_dirfrags_under(basefrag
, srcfrags
);
10608 adjust_dir_fragments(diri
, srcfrags
, basefrag
, bits
, resultfrags
, waiters
, replay
);
10611 CDir
*MDCache::force_dir_fragment(CInode
*diri
, frag_t fg
, bool replay
)
10613 CDir
*dir
= diri
->get_dirfrag(fg
);
10617 dout(10) << "force_dir_fragment " << fg
<< " on " << *diri
<< dendl
;
10619 list
<CDir
*> src
, result
;
10620 list
<MDSInternalContextBase
*> waiters
;
10623 frag_t parent
= diri
->dirfragtree
.get_branch_or_leaf(fg
);
10625 CDir
*pdir
= diri
->get_dirfrag(parent
);
10627 int split
= fg
.bits() - parent
.bits();
10628 dout(10) << " splitting parent by " << split
<< " " << *pdir
<< dendl
;
10629 src
.push_back(pdir
);
10630 adjust_dir_fragments(diri
, src
, parent
, split
, result
, waiters
, replay
);
10631 dir
= diri
->get_dirfrag(fg
);
10633 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10637 if (parent
== frag_t())
10639 frag_t last
= parent
;
10640 parent
= parent
.parent();
10641 dout(10) << " " << last
<< " parent is " << parent
<< dendl
;
10645 // hoover up things under fg?
10646 diri
->get_dirfrags_under(fg
, src
);
10648 dout(10) << "force_dir_fragment no frags under " << fg
<< dendl
;
10650 dout(10) << " will combine frags under " << fg
<< ": " << src
<< dendl
;
10651 adjust_dir_fragments(diri
, src
, fg
, 0, result
, waiters
, replay
);
10652 dir
= result
.front();
10653 dout(10) << "force_dir_fragment result " << *dir
<< dendl
;
10657 mds
->queue_waiters(waiters
);
10661 void MDCache::adjust_dir_fragments(CInode
*diri
,
10662 list
<CDir
*>& srcfrags
,
10663 frag_t basefrag
, int bits
,
10664 list
<CDir
*>& resultfrags
,
10665 list
<MDSInternalContextBase
*>& waiters
,
10668 dout(10) << "adjust_dir_fragments " << basefrag
<< " bits " << bits
10669 << " srcfrags " << srcfrags
10670 << " on " << *diri
<< dendl
;
10673 // yuck. we may have discovered the inode while it was being fragmented.
10674 if (!diri
->dirfragtree
.is_leaf(basefrag
))
10675 diri
->dirfragtree
.force_to_leaf(g_ceph_context
, basefrag
);
10678 diri
->dirfragtree
.split(basefrag
, bits
);
10679 dout(10) << " new fragtree is " << diri
->dirfragtree
<< dendl
;
10681 if (srcfrags
.empty())
10685 CDir
*parent_dir
= diri
->get_parent_dir();
10686 CDir
*parent_subtree
= 0;
10688 parent_subtree
= get_subtree_root(parent_dir
);
10692 assert(srcfrags
.size() == 1);
10693 CDir
*dir
= srcfrags
.front();
10695 dir
->split(bits
, resultfrags
, waiters
, replay
);
10697 // did i change the subtree map?
10698 if (dir
->is_subtree_root()) {
10699 // new frags are now separate subtrees
10700 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10701 p
!= resultfrags
.end();
10703 subtrees
[*p
].clear(); // new frag is now its own subtree
10706 if (parent_subtree
) {
10707 assert(subtrees
[parent_subtree
].count(dir
));
10708 subtrees
[parent_subtree
].erase(dir
);
10709 for (list
<CDir
*>::iterator p
= resultfrags
.begin();
10710 p
!= resultfrags
.end();
10712 assert((*p
)->is_subtree_root());
10713 subtrees
[parent_subtree
].insert(*p
);
10717 // adjust my bounds.
10719 bounds
.swap(subtrees
[dir
]);
10720 subtrees
.erase(dir
);
10721 for (set
<CDir
*>::iterator p
= bounds
.begin();
10724 CDir
*frag
= get_subtree_root((*p
)->get_parent_dir());
10725 subtrees
[frag
].insert(*p
);
10730 // dir has no PIN_SUBTREE; CDir::purge_stolen() drops it.
10731 dir
->dir_auth
= CDIR_AUTH_DEFAULT
;
10734 diri
->close_dirfrag(dir
->get_frag());
10739 // are my constituent bits subtrees? if so, i will be too.
10740 // (it's all or none, actually.)
10741 bool any_subtree
= false;
10742 for (CDir
*dir
: srcfrags
) {
10743 if (dir
->is_subtree_root()) {
10744 any_subtree
= true;
10748 set
<CDir
*> new_bounds
;
10750 for (CDir
*dir
: srcfrags
) {
10751 // this simplifies the code that find subtrees underneath the dirfrag
10752 if (!dir
->is_subtree_root()) {
10753 dir
->state_set(CDir::STATE_AUXSUBTREE
);
10754 adjust_subtree_auth(dir
, mds
->get_nodeid());
10758 for (CDir
*dir
: srcfrags
) {
10759 assert(dir
->is_subtree_root());
10760 dout(10) << " taking srcfrag subtree bounds from " << *dir
<< dendl
;
10761 map
<CDir
*, set
<CDir
*> >::iterator q
= subtrees
.find(dir
);
10762 set
<CDir
*>::iterator r
= q
->second
.begin();
10763 while (r
!= subtrees
[dir
].end()) {
10764 new_bounds
.insert(*r
);
10765 subtrees
[dir
].erase(r
++);
10769 // remove myself as my parent's bound
10770 if (parent_subtree
)
10771 subtrees
[parent_subtree
].erase(dir
);
10776 CDir
*f
= new CDir(diri
, basefrag
, this, srcfrags
.front()->is_auth());
10777 f
->merge(srcfrags
, waiters
, replay
);
10780 assert(f
->is_subtree_root());
10781 subtrees
[f
].swap(new_bounds
);
10782 if (parent_subtree
)
10783 subtrees
[parent_subtree
].insert(f
);
10788 resultfrags
.push_back(f
);
10793 class C_MDC_FragmentFrozen
: public MDSInternalContext
{
10797 C_MDC_FragmentFrozen(MDCache
*m
, MDRequestRef
& r
) :
10798 MDSInternalContext(m
->mds
), mdcache(m
), mdr(r
) {}
10799 void finish(int r
) override
{
10800 mdcache
->fragment_frozen(mdr
, r
);
10804 bool MDCache::can_fragment(CInode
*diri
, list
<CDir
*>& dirs
)
10806 if (is_readonly()) {
10807 dout(7) << "can_fragment: read-only FS, no fragmenting for now" << dendl
;
10810 if (mds
->is_cluster_degraded()) {
10811 dout(7) << "can_fragment: cluster degraded, no fragmenting for now" << dendl
;
10814 if (diri
->get_parent_dir() &&
10815 diri
->get_parent_dir()->get_inode()->is_stray()) {
10816 dout(7) << "can_fragment: i won't merge|split anything in stray" << dendl
;
10819 if (diri
->is_mdsdir() || diri
->is_stray() || diri
->ino() == MDS_INO_CEPH
) {
10820 dout(7) << "can_fragment: i won't fragment the mdsdir or straydir or .ceph" << dendl
;
10824 if (diri
->scrub_is_in_progress()) {
10825 dout(7) << "can_fragment: scrub in progress" << dendl
;
10829 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10831 if (dir
->state_test(CDir::STATE_FRAGMENTING
)) {
10832 dout(7) << "can_fragment: already fragmenting " << *dir
<< dendl
;
10835 if (!dir
->is_auth()) {
10836 dout(7) << "can_fragment: not auth on " << *dir
<< dendl
;
10839 if (dir
->is_bad()) {
10840 dout(7) << "can_fragment: bad dirfrag " << *dir
<< dendl
;
10843 if (dir
->is_frozen() ||
10844 dir
->is_freezing()) {
10845 dout(7) << "can_fragment: can't merge, freezing|frozen. wait for other exports to finish first." << dendl
;
10853 void MDCache::split_dir(CDir
*dir
, int bits
)
10855 dout(7) << __func__
<< " " << *dir
<< " bits " << bits
<< dendl
;
10856 assert(dir
->is_auth());
10857 CInode
*diri
= dir
->inode
;
10860 dirs
.push_back(dir
);
10862 if (!can_fragment(diri
, dirs
)) {
10863 dout(7) << __func__
<< " cannot fragment right now, dropping" << dendl
;
10867 if (dir
->frag
.bits() + bits
> 24) {
10868 dout(7) << __func__
<< " frag bits > 24, dropping" << dendl
;
10872 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10873 mdr
->more()->fragment_base
= dir
->dirfrag();
10875 assert(fragments
.count(dir
->dirfrag()) == 0);
10876 fragment_info_t
& info
= fragments
[dir
->dirfrag()];
10878 info
.dirs
.push_back(dir
);
10880 info
.last_cum_auth_pins_change
= ceph_clock_now();
10882 fragment_freeze_dirs(dirs
);
10883 // initial mark+complete pass
10884 fragment_mark_and_complete(mdr
);
10887 void MDCache::merge_dir(CInode
*diri
, frag_t frag
)
10889 dout(7) << "merge_dir to " << frag
<< " on " << *diri
<< dendl
;
10892 if (!diri
->get_dirfrags_under(frag
, dirs
)) {
10893 dout(7) << "don't have all frags under " << frag
<< " for " << *diri
<< dendl
;
10897 if (diri
->dirfragtree
.is_leaf(frag
)) {
10898 dout(10) << " " << frag
<< " already a leaf for " << *diri
<< dendl
;
10902 if (!can_fragment(diri
, dirs
))
10905 CDir
*first
= dirs
.front();
10906 int bits
= first
->get_frag().bits() - frag
.bits();
10907 dout(10) << " we are merginb by " << bits
<< " bits" << dendl
;
10909 dirfrag_t
basedirfrag(diri
->ino(), frag
);
10910 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FRAGMENTDIR
);
10911 mdr
->more()->fragment_base
= basedirfrag
;
10913 assert(fragments
.count(basedirfrag
) == 0);
10914 fragment_info_t
& info
= fragments
[basedirfrag
];
10918 info
.last_cum_auth_pins_change
= ceph_clock_now();
10920 fragment_freeze_dirs(dirs
);
10921 // initial mark+complete pass
10922 fragment_mark_and_complete(mdr
);
10925 void MDCache::fragment_freeze_dirs(list
<CDir
*>& dirs
)
10927 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
10929 dir
->auth_pin(dir
); // until we mark and complete them
10930 dir
->state_set(CDir::STATE_FRAGMENTING
);
10932 assert(dir
->is_freezing_dir());
10936 class C_MDC_FragmentMarking
: public MDCacheContext
{
10939 C_MDC_FragmentMarking(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
10940 void finish(int r
) override
{
10941 mdcache
->fragment_mark_and_complete(mdr
);
10945 void MDCache::fragment_mark_and_complete(MDRequestRef
& mdr
)
10947 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
10948 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
10949 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
10950 dout(7) << "fragment_mark_and_complete " << basedirfrag
<< " must have aborted" << dendl
;
10951 request_finish(mdr
);
10955 fragment_info_t
& info
= it
->second
;
10956 CInode
*diri
= info
.dirs
.front()->get_inode();
10957 dout(10) << "fragment_mark_and_complete " << info
.dirs
<< " on " << *diri
<< dendl
;
10959 MDSGatherBuilder
gather(g_ceph_context
);
10961 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
10962 p
!= info
.dirs
.end();
10967 if (!dir
->is_complete()) {
10968 dout(15) << " fetching incomplete " << *dir
<< dendl
;
10969 dir
->fetch(gather
.new_sub(), true); // ignore authpinnability
10971 } else if (dir
->get_frag() == frag_t()) {
10972 // The COMPLETE flag gets lost if we fragment a new dirfrag, then rollback
10973 // the operation. To avoid CDir::fetch() complaining about missing object,
10974 // we commit new dirfrag first.
10975 if (dir
->state_test(CDir::STATE_CREATING
)) {
10976 dout(15) << " waiting until new dir gets journaled " << *dir
<< dendl
;
10977 dir
->add_waiter(CDir::WAIT_CREATED
, gather
.new_sub());
10979 } else if (dir
->is_new()) {
10980 dout(15) << " committing new " << *dir
<< dendl
;
10981 assert(dir
->is_dirty());
10982 dir
->commit(0, gather
.new_sub(), true);
10989 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
10990 dout(15) << " marking " << *dir
<< dendl
;
10991 for (auto &p
: dir
->items
) {
10992 CDentry
*dn
= p
.second
;
10993 dn
->get(CDentry::PIN_FRAGMENTING
);
10994 assert(!dn
->state_test(CDentry::STATE_FRAGMENTING
));
10995 dn
->state_set(CDentry::STATE_FRAGMENTING
);
10997 dir
->state_set(CDir::STATE_DNPINNEDFRAG
);
10998 dir
->auth_unpin(dir
);
11000 dout(15) << " already marked " << *dir
<< dendl
;
11003 if (gather
.has_subs()) {
11004 gather
.set_finisher(new C_MDC_FragmentMarking(this, mdr
));
11009 for (list
<CDir
*>::iterator p
= info
.dirs
.begin();
11010 p
!= info
.dirs
.end();
11013 if (!dir
->is_frozen_dir()) {
11014 assert(dir
->is_freezing_dir());
11015 dir
->add_waiter(CDir::WAIT_FROZEN
, gather
.new_sub());
11018 if (gather
.has_subs()) {
11019 gather
.set_finisher(new C_MDC_FragmentFrozen(this, mdr
));
11021 // flush log so that request auth_pins are retired
11022 mds
->mdlog
->flush();
11026 fragment_frozen(mdr
, 0);
11029 void MDCache::fragment_unmark_unfreeze_dirs(list
<CDir
*>& dirs
)
11031 dout(10) << "fragment_unmark_unfreeze_dirs " << dirs
<< dendl
;
11032 for (list
<CDir
*>::iterator p
= dirs
.begin(); p
!= dirs
.end(); ++p
) {
11034 dout(10) << " frag " << *dir
<< dendl
;
11036 assert(dir
->state_test(CDir::STATE_FRAGMENTING
));
11037 dir
->state_clear(CDir::STATE_FRAGMENTING
);
11039 if (dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
11040 dir
->state_clear(CDir::STATE_DNPINNEDFRAG
);
11042 for (auto &p
: dir
->items
) {
11043 CDentry
*dn
= p
.second
;
11044 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
11045 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
11046 dn
->put(CDentry::PIN_FRAGMENTING
);
11049 dir
->auth_unpin(dir
);
11052 dir
->unfreeze_dir();
11056 bool MDCache::fragment_are_all_frozen(CDir
*dir
)
11058 assert(dir
->is_frozen_dir());
11059 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
11060 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
11061 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
11063 if (p
->first
.frag
.contains(dir
->get_frag()))
11064 return p
->second
.all_frozen
;
11070 void MDCache::fragment_freeze_inc_num_waiters(CDir
*dir
)
11072 map
<dirfrag_t
,fragment_info_t
>::iterator p
;
11073 for (p
= fragments
.lower_bound(dirfrag_t(dir
->ino(), 0));
11074 p
!= fragments
.end() && p
->first
.ino
== dir
->ino();
11076 if (p
->first
.frag
.contains(dir
->get_frag())) {
11077 p
->second
.num_remote_waiters
++;
11084 void MDCache::find_stale_fragment_freeze()
11086 dout(10) << "find_stale_fragment_freeze" << dendl
;
11087 // see comment in Migrator::find_stale_export_freeze()
11088 utime_t now
= ceph_clock_now();
11089 utime_t cutoff
= now
;
11090 cutoff
-= g_conf
->mds_freeze_tree_timeout
;
11092 for (map
<dirfrag_t
,fragment_info_t
>::iterator p
= fragments
.begin();
11093 p
!= fragments
.end(); ) {
11094 dirfrag_t df
= p
->first
;
11095 fragment_info_t
& info
= p
->second
;
11097 if (info
.all_frozen
)
11100 int total_auth_pins
= 0;
11101 for (list
<CDir
*>::iterator q
= info
.dirs
.begin();
11102 q
!= info
.dirs
.end();
11105 if (!dir
->state_test(CDir::STATE_DNPINNEDFRAG
)) {
11106 total_auth_pins
= -1;
11109 if (dir
->is_frozen_dir())
11111 total_auth_pins
+= dir
->get_auth_pins() + dir
->get_dir_auth_pins();
11113 if (total_auth_pins
< 0)
11115 if (info
.last_cum_auth_pins
!= total_auth_pins
) {
11116 info
.last_cum_auth_pins
= total_auth_pins
;
11117 info
.last_cum_auth_pins_change
= now
;
11120 if (info
.last_cum_auth_pins_change
>= cutoff
)
11122 dir
= info
.dirs
.front();
11123 if (info
.num_remote_waiters
> 0 ||
11124 (!dir
->inode
->is_root() && dir
->get_parent_dir()->is_freezing())) {
11125 dout(10) << " cancel fragmenting " << df
<< " bit " << info
.bits
<< dendl
;
11127 info
.dirs
.swap(dirs
);
11128 fragments
.erase(df
);
11129 fragment_unmark_unfreeze_dirs(dirs
);
11134 class C_MDC_FragmentPrep
: public MDCacheLogContext
{
11137 C_MDC_FragmentPrep(MDCache
*m
, MDRequestRef
& r
) : MDCacheLogContext(m
), mdr(r
) {}
11138 void finish(int r
) override
{
11139 mdcache
->_fragment_logged(mdr
);
11143 class C_MDC_FragmentStore
: public MDCacheContext
{
11146 C_MDC_FragmentStore(MDCache
*m
, MDRequestRef
& r
) : MDCacheContext(m
), mdr(r
) {}
11147 void finish(int r
) override
{
11148 mdcache
->_fragment_stored(mdr
);
11152 class C_MDC_FragmentCommit
: public MDCacheLogContext
{
11153 dirfrag_t basedirfrag
;
11154 list
<CDir
*> resultfrags
;
11156 C_MDC_FragmentCommit(MDCache
*m
, dirfrag_t df
, list
<CDir
*>& l
) :
11157 MDCacheLogContext(m
), basedirfrag(df
), resultfrags(l
) {}
11158 void finish(int r
) override
{
11159 mdcache
->_fragment_committed(basedirfrag
, resultfrags
);
11163 class C_IO_MDC_FragmentFinish
: public MDCacheIOContext
{
11164 dirfrag_t basedirfrag
;
11165 list
<CDir
*> resultfrags
;
11167 C_IO_MDC_FragmentFinish(MDCache
*m
, dirfrag_t f
, list
<CDir
*>& l
) :
11168 MDCacheIOContext(m
), basedirfrag(f
) {
11169 resultfrags
.swap(l
);
11171 void finish(int r
) override
{
11172 assert(r
== 0 || r
== -ENOENT
);
11173 mdcache
->_fragment_finish(basedirfrag
, resultfrags
);
11177 void MDCache::fragment_frozen(MDRequestRef
& mdr
, int r
)
11179 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11180 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11181 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11182 dout(7) << "fragment_frozen " << basedirfrag
<< " must have aborted" << dendl
;
11183 request_finish(mdr
);
11188 fragment_info_t
& info
= it
->second
;
11189 dout(10) << "fragment_frozen " << basedirfrag
.frag
<< " by " << info
.bits
11190 << " on " << info
.dirs
.front()->get_inode() << dendl
;
11192 info
.all_frozen
= true;
11193 dispatch_fragment_dir(mdr
);
11196 void MDCache::dispatch_fragment_dir(MDRequestRef
& mdr
)
11198 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11199 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11200 if (it
== fragments
.end() || it
->second
.mdr
!= mdr
) {
11201 dout(7) << "dispatch_fragment_dir " << basedirfrag
<< " must have aborted" << dendl
;
11202 request_finish(mdr
);
11206 fragment_info_t
& info
= it
->second
;
11207 CInode
*diri
= info
.dirs
.front()->get_inode();
11209 dout(10) << "dispatch_fragment_dir " << basedirfrag
<< " bits " << info
.bits
11210 << " on " << *diri
<< dendl
;
11211 if (!mdr
->aborted
) {
11212 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
11213 wrlocks
.insert(&diri
->dirfragtreelock
);
11214 // prevent a racing gather on any other scatterlocks too
11215 wrlocks
.insert(&diri
->nestlock
);
11216 wrlocks
.insert(&diri
->filelock
);
11217 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
, NULL
, NULL
, true))
11222 if (mdr
->aborted
) {
11223 dout(10) << " can't auth_pin " << *diri
<< ", requeuing dir "
11224 << info
.dirs
.front()->dirfrag() << dendl
;
11226 mds
->balancer
->queue_split(info
.dirs
.front(), false);
11228 mds
->balancer
->queue_merge(info
.dirs
.front());
11229 fragment_unmark_unfreeze_dirs(info
.dirs
);
11230 fragments
.erase(it
);
11231 request_finish(mdr
);
11235 mdr
->ls
= mds
->mdlog
->get_current_segment();
11236 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_PREPARE
, basedirfrag
, info
.bits
);
11237 mds
->mdlog
->start_entry(le
);
11239 for (list
<CDir
*>::iterator p
= info
.dirs
.begin(); p
!= info
.dirs
.end(); ++p
) {
11241 dirfrag_rollback rollback
;
11242 rollback
.fnode
= dir
->fnode
;
11243 le
->add_orig_frag(dir
->get_frag(), &rollback
);
11247 list
<MDSInternalContextBase
*> waiters
;
11248 adjust_dir_fragments(diri
, info
.dirs
, basedirfrag
.frag
, info
.bits
,
11249 info
.resultfrags
, waiters
, false);
11250 if (g_conf
->mds_debug_frag
)
11251 diri
->verify_dirfrags();
11252 mds
->queue_waiters(waiters
);
11254 for (list
<frag_t
>::iterator p
= le
->orig_frags
.begin(); p
!= le
->orig_frags
.end(); ++p
)
11255 assert(!diri
->dirfragtree
.is_leaf(*p
));
11257 le
->metablob
.add_dir_context(*info
.resultfrags
.begin());
11258 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11259 p
!= info
.resultfrags
.end();
11261 if (diri
->is_auth()) {
11262 le
->metablob
.add_fragmented_dir(*p
, false, false);
11264 (*p
)->state_set(CDir::STATE_DIRTYDFT
);
11265 le
->metablob
.add_fragmented_dir(*p
, false, true);
11270 if (diri
->is_auth()) {
11271 // journal dirfragtree
11272 auto &pi
= diri
->project_inode();
11273 pi
.inode
.version
= diri
->pre_dirty();
11274 journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
11276 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11277 mdr
->ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11278 mdr
->add_updated_lock(&diri
->dirfragtreelock
);
11283 mds->locker->mark_updated_scatterlock(&diri->filelock);
11284 mut->ls->dirty_dirfrag_dir.push_back(&diri->item_dirty_dirfrag_dir);
11285 mut->add_updated_lock(&diri->filelock);
11288 mds->locker->mark_updated_scatterlock(&diri->nestlock);
11289 mut->ls->dirty_dirfrag_nest.push_back(&diri->item_dirty_dirfrag_nest);
11290 mut->add_updated_lock(&diri->nestlock);
11293 add_uncommitted_fragment(basedirfrag
, info
.bits
, le
->orig_frags
, mdr
->ls
);
11294 mds
->server
->submit_mdlog_entry(le
, new C_MDC_FragmentPrep(this, mdr
),
11296 mds
->mdlog
->flush();
11299 void MDCache::_fragment_logged(MDRequestRef
& mdr
)
11301 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11302 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11303 assert(it
!= fragments
.end());
11304 fragment_info_t
&info
= it
->second
;
11305 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11307 dout(10) << "fragment_logged " << basedirfrag
<< " bits " << info
.bits
11308 << " on " << *diri
<< dendl
;
11310 if (diri
->is_auth())
11311 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
11313 mdr
->apply(); // mark scatterlock
11315 // store resulting frags
11316 MDSGatherBuilder
gather(g_ceph_context
, new C_MDC_FragmentStore(this, mdr
));
11318 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11319 p
!= info
.resultfrags
.end();
11322 dout(10) << " storing result frag " << *dir
<< dendl
;
11324 // freeze and store them too
11325 dir
->auth_pin(this);
11326 dir
->state_set(CDir::STATE_FRAGMENTING
);
11327 dir
->commit(0, gather
.new_sub(), true); // ignore authpinnability
11333 void MDCache::_fragment_stored(MDRequestRef
& mdr
)
11335 dirfrag_t basedirfrag
= mdr
->more()->fragment_base
;
11336 map
<dirfrag_t
,fragment_info_t
>::iterator it
= fragments
.find(basedirfrag
);
11337 assert(it
!= fragments
.end());
11338 fragment_info_t
&info
= it
->second
;
11339 CInode
*diri
= info
.resultfrags
.front()->get_inode();
11341 dout(10) << "fragment_stored " << basedirfrag
<< " bits " << info
.bits
11342 << " on " << *diri
<< dendl
;
11345 CDir
*first
= *info
.resultfrags
.begin();
11346 for (const auto &p
: first
->get_replicas()) {
11347 if (mds
->mdsmap
->get_state(p
.first
) < MDSMap::STATE_REJOIN
||
11348 (mds
->mdsmap
->get_state(p
.first
) == MDSMap::STATE_REJOIN
&&
11349 rejoin_gather
.count(p
.first
)))
11352 MMDSFragmentNotify
*notify
= new MMDSFragmentNotify(basedirfrag
, info
.bits
);
11354 // freshly replicate new dirs to peers
11355 for (list
<CDir
*>::iterator q
= info
.resultfrags
.begin();
11356 q
!= info
.resultfrags
.end();
11358 replicate_dir(*q
, p
.first
, notify
->basebl
);
11360 mds
->send_message_mds(notify
, p
.first
);
11364 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_COMMIT
, basedirfrag
, info
.bits
);
11365 mds
->mdlog
->start_submit_entry(le
, new C_MDC_FragmentCommit(this, basedirfrag
,
11366 info
.resultfrags
));
11368 mds
->locker
->drop_locks(mdr
.get());
11370 // unfreeze resulting frags
11371 for (list
<CDir
*>::iterator p
= info
.resultfrags
.begin();
11372 p
!= info
.resultfrags
.end();
11375 dout(10) << " result frag " << *dir
<< dendl
;
11377 for (auto &p
: dir
->items
) {
11378 CDentry
*dn
= p
.second
;
11379 assert(dn
->state_test(CDentry::STATE_FRAGMENTING
));
11380 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
11381 dn
->put(CDentry::PIN_FRAGMENTING
);
11385 dir
->unfreeze_dir();
11388 fragments
.erase(it
);
11389 request_finish(mdr
);
11392 void MDCache::_fragment_committed(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11394 dout(10) << "fragment_committed " << basedirfrag
<< dendl
;
11395 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11396 assert(it
!= uncommitted_fragments
.end());
11397 ufragment
&uf
= it
->second
;
11399 // remove old frags
11400 C_GatherBuilder
gather(
11403 new C_IO_MDC_FragmentFinish(this, basedirfrag
, resultfrags
),
11406 SnapContext nullsnapc
;
11407 object_locator_t
oloc(mds
->mdsmap
->get_metadata_pool());
11408 for (list
<frag_t
>::iterator p
= uf
.old_frags
.begin();
11409 p
!= uf
.old_frags
.end();
11411 object_t oid
= CInode::get_object_name(basedirfrag
.ino
, *p
, "");
11412 ObjectOperation op
;
11413 if (*p
== frag_t()) {
11414 // backtrace object
11415 dout(10) << " truncate orphan dirfrag " << oid
<< dendl
;
11419 dout(10) << " removing orphan dirfrag " << oid
<< dendl
;
11422 mds
->objecter
->mutate(oid
, oloc
, op
, nullsnapc
,
11423 ceph::real_clock::now(),
11424 0, gather
.new_sub());
11427 assert(gather
.has_subs());
11431 void MDCache::_fragment_finish(dirfrag_t basedirfrag
, list
<CDir
*>& resultfrags
)
11433 dout(10) << "fragment_finish " << basedirfrag
<< "resultfrags.size="
11434 << resultfrags
.size() << dendl
;
11435 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11436 assert(it
!= uncommitted_fragments
.end());
11437 ufragment
&uf
= it
->second
;
11439 // unmark & auth_unpin
11440 for (const auto &dir
: resultfrags
) {
11441 dir
->state_clear(CDir::STATE_FRAGMENTING
);
11442 dir
->auth_unpin(this);
11444 // In case the resulting fragments are beyond the split size,
11445 // we might need to split them again right away (they could
11446 // have been taking inserts between unfreezing and getting
11448 mds
->balancer
->maybe_fragment(dir
, false);
11452 if (resultfrags
.size() > 1) {
11453 mds
->logger
->inc(l_mds_dir_split
);
11455 mds
->logger
->inc(l_mds_dir_merge
);
11459 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_FINISH
, basedirfrag
, uf
.bits
);
11460 mds
->mdlog
->start_submit_entry(le
);
11462 finish_uncommitted_fragment(basedirfrag
, EFragment::OP_FINISH
);
11465 /* This function DOES put the passed message before returning */
11466 void MDCache::handle_fragment_notify(MMDSFragmentNotify
*notify
)
11468 dout(10) << "handle_fragment_notify " << *notify
<< " from " << notify
->get_source() << dendl
;
11470 if (mds
->get_state() < MDSMap::STATE_REJOIN
) {
11475 CInode
*diri
= get_inode(notify
->get_ino());
11477 frag_t base
= notify
->get_basefrag();
11478 int bits
= notify
->get_bits();
11481 if ((bits < 0 && diri->dirfragtree.is_leaf(base)) ||
11482 (bits > 0 && !diri->dirfragtree.is_leaf(base))) {
11483 dout(10) << " dft " << diri->dirfragtree << " state doesn't match " << base << " by " << bits
11484 << ", must have found out during resolve/rejoin? ignoring. " << *diri << dendl;
11491 list
<MDSInternalContextBase
*> waiters
;
11492 list
<CDir
*> resultfrags
;
11493 adjust_dir_fragments(diri
, base
, bits
, resultfrags
, waiters
, false);
11494 if (g_conf
->mds_debug_frag
)
11495 diri
->verify_dirfrags();
11497 for (list
<CDir
*>::iterator p
= resultfrags
.begin(); p
!= resultfrags
.end(); ++p
)
11498 diri
->take_dir_waiting((*p
)->get_frag(), waiters
);
11500 // add new replica dirs values
11501 bufferlist::iterator p
= notify
->basebl
.begin();
11503 add_replica_dir(p
, diri
, mds_rank_t(notify
->get_source().num()), waiters
);
11505 mds
->queue_waiters(waiters
);
11513 void MDCache::add_uncommitted_fragment(dirfrag_t basedirfrag
, int bits
, list
<frag_t
>& old_frags
,
11514 LogSegment
*ls
, bufferlist
*rollback
)
11516 dout(10) << "add_uncommitted_fragment: base dirfrag " << basedirfrag
<< " bits " << bits
<< dendl
;
11517 assert(!uncommitted_fragments
.count(basedirfrag
));
11518 ufragment
& uf
= uncommitted_fragments
[basedirfrag
];
11519 uf
.old_frags
= old_frags
;
11522 ls
->uncommitted_fragments
.insert(basedirfrag
);
11524 uf
.rollback
.swap(*rollback
);
11527 void MDCache::finish_uncommitted_fragment(dirfrag_t basedirfrag
, int op
)
11529 dout(10) << "finish_uncommitted_fragments: base dirfrag " << basedirfrag
11530 << " op " << EFragment::op_name(op
) << dendl
;
11531 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11532 if (it
!= uncommitted_fragments
.end()) {
11533 ufragment
& uf
= it
->second
;
11534 if (op
!= EFragment::OP_FINISH
&& !uf
.old_frags
.empty()) {
11535 uf
.committed
= true;
11537 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11538 mds
->queue_waiters(uf
.waiters
);
11539 uncommitted_fragments
.erase(it
);
11544 void MDCache::rollback_uncommitted_fragment(dirfrag_t basedirfrag
, list
<frag_t
>& old_frags
)
11546 dout(10) << "rollback_uncommitted_fragment: base dirfrag " << basedirfrag
11547 << " old_frags (" << old_frags
<< ")" << dendl
;
11548 map
<dirfrag_t
, ufragment
>::iterator it
= uncommitted_fragments
.find(basedirfrag
);
11549 if (it
!= uncommitted_fragments
.end()) {
11550 ufragment
& uf
= it
->second
;
11551 if (!uf
.old_frags
.empty()) {
11552 uf
.old_frags
.swap(old_frags
);
11553 uf
.committed
= true;
11555 uf
.ls
->uncommitted_fragments
.erase(basedirfrag
);
11556 uncommitted_fragments
.erase(it
);
11561 void MDCache::rollback_uncommitted_fragments()
11563 dout(10) << "rollback_uncommitted_fragments: " << uncommitted_fragments
.size() << " pending" << dendl
;
11564 for (map
<dirfrag_t
, ufragment
>::iterator p
= uncommitted_fragments
.begin();
11565 p
!= uncommitted_fragments
.end();
11567 ufragment
&uf
= p
->second
;
11568 CInode
*diri
= get_inode(p
->first
.ino
);
11571 if (uf
.committed
) {
11573 diri
->get_dirfrags_under(p
->first
.frag
, frags
);
11574 for (list
<CDir
*>::iterator q
= frags
.begin(); q
!= frags
.end(); ++q
) {
11576 dir
->auth_pin(this);
11577 dir
->state_set(CDir::STATE_FRAGMENTING
);
11579 _fragment_committed(p
->first
, frags
);
11583 dout(10) << " rolling back " << p
->first
<< " refragment by " << uf
.bits
<< " bits" << dendl
;
11585 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
11586 EFragment
*le
= new EFragment(mds
->mdlog
, EFragment::OP_ROLLBACK
, p
->first
, uf
.bits
);
11587 mds
->mdlog
->start_entry(le
);
11588 bool diri_auth
= (diri
->authority() != CDIR_AUTH_UNDEF
);
11590 list
<frag_t
> old_frags
;
11591 diri
->dirfragtree
.get_leaves_under(p
->first
.frag
, old_frags
);
11593 list
<CDir
*> resultfrags
;
11594 if (uf
.old_frags
.empty()) {
11595 // created by old format EFragment
11596 list
<MDSInternalContextBase
*> waiters
;
11597 adjust_dir_fragments(diri
, p
->first
.frag
, -uf
.bits
, resultfrags
, waiters
, true);
11599 bufferlist::iterator bp
= uf
.rollback
.begin();
11600 for (list
<frag_t
>::iterator q
= uf
.old_frags
.begin(); q
!= uf
.old_frags
.end(); ++q
) {
11601 CDir
*dir
= force_dir_fragment(diri
, *q
);
11602 resultfrags
.push_back(dir
);
11604 dirfrag_rollback rollback
;
11605 ::decode(rollback
, bp
);
11607 dir
->set_version(rollback
.fnode
.version
);
11608 dir
->fnode
= rollback
.fnode
;
11610 dir
->_mark_dirty(ls
);
11612 if (!(dir
->fnode
.rstat
== dir
->fnode
.accounted_rstat
)) {
11613 dout(10) << " dirty nestinfo on " << *dir
<< dendl
;
11614 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->nestlock
);
11615 ls
->dirty_dirfrag_nest
.push_back(&dir
->inode
->item_dirty_dirfrag_nest
);
11617 if (!(dir
->fnode
.fragstat
== dir
->fnode
.accounted_fragstat
)) {
11618 dout(10) << " dirty fragstat on " << *dir
<< dendl
;
11619 mds
->locker
->mark_updated_scatterlock(&dir
->inode
->filelock
);
11620 ls
->dirty_dirfrag_dir
.push_back(&dir
->inode
->item_dirty_dirfrag_dir
);
11623 le
->add_orig_frag(dir
->get_frag());
11624 le
->metablob
.add_dir_context(dir
);
11626 le
->metablob
.add_fragmented_dir(dir
, true, false);
11628 dout(10) << " dirty dirfragtree on " << *dir
<< dendl
;
11629 dir
->state_set(CDir::STATE_DIRTYDFT
);
11630 le
->metablob
.add_fragmented_dir(dir
, true, true);
11636 auto &pi
= diri
->project_inode();
11637 pi
.inode
.version
= diri
->pre_dirty();
11638 diri
->pop_and_dirty_projected_inode(ls
); // hacky
11639 le
->metablob
.add_primary_dentry(diri
->get_projected_parent_dn(), diri
, true);
11641 mds
->locker
->mark_updated_scatterlock(&diri
->dirfragtreelock
);
11642 ls
->dirty_dirfrag_dirfragtree
.push_back(&diri
->item_dirty_dirfrag_dirfragtree
);
11645 if (g_conf
->mds_debug_frag
)
11646 diri
->verify_dirfrags();
11648 for (list
<frag_t
>::iterator q
= old_frags
.begin(); q
!= old_frags
.end(); ++q
)
11649 assert(!diri
->dirfragtree
.is_leaf(*q
));
11651 for (list
<CDir
*>::iterator q
= resultfrags
.begin(); q
!= resultfrags
.end(); ++q
) {
11653 dir
->auth_pin(this);
11654 dir
->state_set(CDir::STATE_FRAGMENTING
);
11657 mds
->mdlog
->submit_entry(le
);
11659 uf
.old_frags
.swap(old_frags
);
11660 _fragment_committed(p
->first
, resultfrags
);
11664 void MDCache::force_readonly()
11669 dout(1) << "force file system read-only" << dendl
;
11670 mds
->clog
->warn() << "force file system read-only";
11674 mds
->server
->force_clients_readonly();
11676 // revoke write caps
11677 for (auto &p
: inode_map
) {
11678 CInode
*in
= p
.second
;
11680 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
);
11683 mds
->mdlog
->flush();
11687 // ==============================================================
11690 void MDCache::show_subtrees(int dbl
)
11692 if (g_conf
->mds_thrash_exports
)
11695 //dout(10) << "show_subtrees" << dendl;
11697 if (!g_conf
->subsys
.should_gather(ceph_subsys_mds
, dbl
))
11698 return; // i won't print anything.
11700 if (subtrees
.empty()) {
11701 dout(dbl
) << "show_subtrees - no subtrees" << dendl
;
11706 list
<CDir
*> basefrags
;
11707 for (set
<CInode
*>::iterator p
= base_inodes
.begin();
11708 p
!= base_inodes
.end();
11710 (*p
)->get_dirfrags(basefrags
);
11711 //dout(15) << "show_subtrees, base dirfrags " << basefrags << dendl;
11712 dout(15) << "show_subtrees" << dendl
;
11715 list
<pair
<CDir
*,int> > q
;
11720 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11721 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11723 set
<CDir
*> subtrees_seen
;
11726 while (!q
.empty()) {
11727 CDir
*dir
= q
.front().first
;
11728 int d
= q
.front().second
;
11731 if (subtrees
.count(dir
) == 0) continue;
11733 subtrees_seen
.insert(dir
);
11735 if (d
> depth
) depth
= d
;
11738 //dout(25) << "saw depth " << d << " " << *dir << dendl;
11739 if (seen
.count(dir
)) dout(0) << "aah, already seen " << *dir
<< dendl
;
11740 assert(seen
.count(dir
) == 0);
11744 if (!subtrees
[dir
].empty()) {
11745 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11746 p
!= subtrees
[dir
].end();
11748 //dout(25) << " saw sub " << **p << dendl;
11749 q
.push_front(pair
<CDir
*,int>(*p
, d
+1));
11756 for (list
<CDir
*>::iterator p
= basefrags
.begin(); p
!= basefrags
.end(); ++p
)
11757 q
.push_back(pair
<CDir
*,int>(*p
, 0));
11759 while (!q
.empty()) {
11760 CDir
*dir
= q
.front().first
;
11761 int d
= q
.front().second
;
11764 if (subtrees
.count(dir
) == 0) continue;
11767 while ((unsigned)d
< indent
.size())
11771 string pad
= "______________________________________";
11772 pad
.resize(depth
*2+1-indent
.size());
11773 if (!subtrees
[dir
].empty())
11774 pad
[0] = '.'; // parent
11778 if (dir
->is_auth())
11784 if (dir
->get_dir_auth().second
== CDIR_AUTH_UNKNOWN
)
11785 snprintf(s
, sizeof(s
), "%2d ", int(dir
->get_dir_auth().first
));
11787 snprintf(s
, sizeof(s
), "%2d,%2d", int(dir
->get_dir_auth().first
), int(dir
->get_dir_auth().second
));
11790 dout(dbl
) << indent
<< "|_" << pad
<< s
<< " " << auth
<< *dir
<< dendl
;
11792 if (dir
->ino() == MDS_INO_ROOT
)
11793 assert(dir
->inode
== root
);
11794 if (dir
->ino() == MDS_INO_MDSDIR(mds
->get_nodeid()))
11795 assert(dir
->inode
== myin
);
11796 if (dir
->inode
->is_stray() && (MDS_INO_STRAY_OWNER(dir
->ino()) == mds
->get_nodeid()))
11797 assert(strays
[MDS_INO_STRAY_INDEX(dir
->ino())] == dir
->inode
);
11800 if (!subtrees
[dir
].empty()) {
11801 // more at my level?
11802 if (!q
.empty() && q
.front().second
== d
)
11807 for (set
<CDir
*>::iterator p
= subtrees
[dir
].begin();
11808 p
!= subtrees
[dir
].end();
11810 q
.push_front(pair
<CDir
*,int>(*p
, d
+2));
11814 // verify there isn't stray crap in subtree map
11816 for (map
<CDir
*, set
<CDir
*> >::iterator p
= subtrees
.begin();
11817 p
!= subtrees
.end();
11819 if (subtrees_seen
.count(p
->first
)) continue;
11820 dout(10) << "*** stray/lost entry in subtree map: " << *p
->first
<< dendl
;
11826 void MDCache::show_cache()
11828 dout(7) << "show_cache" << dendl
;
11830 auto show_func
= [this](CInode
*in
) {
11833 dout(7) << " unlinked " << *in
<< dendl
;
11837 in
->get_dirfrags(dfs
);
11838 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11840 dout(7) << " dirfrag " << *dir
<< dendl
;
11842 for (auto &p
: dir
->items
) {
11843 CDentry
*dn
= p
.second
;
11844 dout(7) << " dentry " << *dn
<< dendl
;
11845 CDentry::linkage_t
*dnl
= dn
->get_linkage();
11846 if (dnl
->is_primary() && dnl
->get_inode())
11847 dout(7) << " inode " << *dnl
->get_inode() << dendl
;
11852 for (auto &p
: inode_map
)
11853 show_func(p
.second
);
11854 for (auto &p
: snap_inode_map
)
11855 show_func(p
.second
);
11858 int MDCache::cache_status(Formatter
*f
)
11860 f
->open_object_section("cache");
11862 f
->open_object_section("pool");
11863 mempool::get_pool(mempool::mds_co::id
).dump(f
);
11864 f
->close_section();
11866 f
->close_section();
11870 int MDCache::dump_cache(boost::string_view file_name
)
11872 return dump_cache(file_name
, NULL
);
11875 int MDCache::dump_cache(Formatter
*f
)
11877 return dump_cache(boost::string_view(""), f
);
11880 int MDCache::dump_cache(boost::string_view dump_root
, int depth
, Formatter
*f
)
11882 return dump_cache(boost::string_view(""), f
, dump_root
, depth
);
11886 * Dump the metadata cache, either to a Formatter, if
11887 * provided, else to a plain text file.
11889 int MDCache::dump_cache(boost::string_view fn
, Formatter
*f
,
11890 boost::string_view dump_root
, int depth
)
11896 f
->open_array_section("inodes");
11898 char path
[PATH_MAX
] = "";
11900 snprintf(path
, sizeof path
, "%s", fn
.data());
11902 snprintf(path
, sizeof path
, "cachedump.%d.mds%d", (int)mds
->mdsmap
->get_epoch(), int(mds
->get_nodeid()));
11905 dout(1) << "dump_cache to " << path
<< dendl
;
11907 fd
= ::open(path
, O_WRONLY
|O_CREAT
|O_EXCL
, 0600);
11909 derr
<< "failed to open " << path
<< ": " << cpp_strerror(errno
) << dendl
;
11914 auto dump_func
= [this, fd
, f
, depth
, &dump_root
](CInode
*in
) {
11916 if (!dump_root
.empty()) {
11921 in
->make_path_string(ipath
);
11923 if (dump_root
.length() > ipath
.length() ||
11924 !equal(dump_root
.begin(), dump_root
.end(), ipath
.begin()))
11928 count(ipath
.begin() + dump_root
.length(), ipath
.end(), '/') > depth
)
11933 f
->open_object_section("inode");
11937 ss
<< *in
<< std::endl
;
11938 std::string s
= ss
.str();
11939 r
= safe_write(fd
, s
.c_str(), s
.length());
11945 in
->get_dirfrags(dfs
);
11947 f
->open_array_section("dirfrags");
11949 for (list
<CDir
*>::iterator p
= dfs
.begin(); p
!= dfs
.end(); ++p
) {
11952 f
->open_object_section("dir");
11956 tt
<< " " << *dir
<< std::endl
;
11957 string t
= tt
.str();
11958 r
= safe_write(fd
, t
.c_str(), t
.length());
11964 f
->open_array_section("dentries");
11966 for (auto &p
: dir
->items
) {
11967 CDentry
*dn
= p
.second
;
11969 f
->open_object_section("dentry");
11971 f
->close_section();
11974 uu
<< " " << *dn
<< std::endl
;
11975 string u
= uu
.str();
11976 r
= safe_write(fd
, u
.c_str(), u
.length());
11982 f
->close_section(); //dentries
11984 dir
->check_rstats();
11986 f
->close_section(); //dir
11990 f
->close_section(); // dirfrags
11994 f
->close_section(); // inode
11999 for (auto &p
: inode_map
) {
12000 r
= dump_func(p
.second
);
12004 for (auto &p
: snap_inode_map
) {
12005 r
= dump_func(p
.second
);
12013 f
->close_section(); // inodes
12022 C_MDS_RetryRequest::C_MDS_RetryRequest(MDCache
*c
, MDRequestRef
& r
)
12023 : MDSInternalContext(c
->mds
), cache(c
), mdr(r
)
12026 void C_MDS_RetryRequest::finish(int r
)
12029 cache
->dispatch_request(mdr
);
12033 class C_MDS_EnqueueScrub
: public Context
12035 Formatter
*formatter
;
12036 Context
*on_finish
;
12038 ScrubHeaderRef header
;
12039 C_MDS_EnqueueScrub(Formatter
*f
, Context
*fin
) :
12040 formatter(f
), on_finish(fin
), header(nullptr) {}
12042 Context
*take_finisher() {
12043 Context
*fin
= on_finish
;
12048 void finish(int r
) override
{
12049 if (r
< 0) { // we failed the lookup or something; dump ourselves
12050 formatter
->open_object_section("results");
12051 formatter
->dump_int("return_code", r
);
12052 formatter
->close_section(); // results
12055 on_finish
->complete(r
);
12059 void MDCache::enqueue_scrub(
12060 boost::string_view path
,
12061 boost::string_view tag
,
12062 bool force
, bool recursive
, bool repair
,
12063 Formatter
*f
, Context
*fin
)
12065 dout(10) << __func__
<< path
<< dendl
;
12066 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_ENQUEUE_SCRUB
);
12068 mdr
->set_filepath(fp
);
12070 C_MDS_EnqueueScrub
*cs
= new C_MDS_EnqueueScrub(f
, fin
);
12071 cs
->header
= std::make_shared
<ScrubHeader
>(
12072 tag
, force
, recursive
, repair
, f
);
12074 mdr
->internal_op_finish
= cs
;
12075 enqueue_scrub_work(mdr
);
12078 void MDCache::enqueue_scrub_work(MDRequestRef
& mdr
)
12080 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12081 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
12085 // TODO: Remove this restriction
12086 assert(in
->is_auth());
12088 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
12092 C_MDS_EnqueueScrub
*cs
= static_cast<C_MDS_EnqueueScrub
*>(mdr
->internal_op_finish
);
12093 ScrubHeaderRef
&header
= cs
->header
;
12095 // Cannot scrub same dentry twice at same time
12096 if (in
->scrub_infop
&& in
->scrub_infop
->scrub_in_progress
) {
12097 mds
->server
->respond_to_request(mdr
, -EBUSY
);
12103 header
->set_origin(in
);
12105 Context
*fin
= nullptr;
12106 if (!header
->get_recursive()) {
12107 fin
= cs
->take_finisher();
12110 // If the scrub did some repair, then flush the journal at the end of
12111 // the scrub. Otherwise in the case of e.g. rewriting a backtrace
12112 // the on disk state will still look damaged.
12113 auto expiry_fin
= new FunctionContext([this, header
, fin
](int r
){
12114 if (header
->get_repaired()) {
12115 dout(4) << "Flushing journal because scrub did some repairs" << dendl
;
12116 mds
->mdlog
->start_new_segment();
12117 mds
->mdlog
->trim_all();
12119 MDSGatherBuilder
expiry_gather(g_ceph_context
);
12120 const std::set
<LogSegment
*> &expiring_segments
= mds
->mdlog
->get_expiring_segments();
12121 for (std::set
<LogSegment
*>::const_iterator i
= expiring_segments
.begin();
12122 i
!= expiring_segments
.end(); ++i
) {
12123 (*i
)->wait_for_expiry(expiry_gather
.new_sub());
12125 expiry_gather
.set_finisher(new MDSInternalContextWrapper(mds
, fin
));
12126 expiry_gather
.activate();
12135 if (!header
->get_recursive()) {
12136 mds
->scrubstack
->enqueue_inode_top(in
, header
,
12137 new MDSInternalContextWrapper(mds
,
12140 mds
->scrubstack
->enqueue_inode_bottom(in
, header
,
12141 new MDSInternalContextWrapper(mds
,
12145 mds
->server
->respond_to_request(mdr
, 0);
12149 struct C_MDC_RepairDirfragStats
: public MDCacheLogContext
{
12151 C_MDC_RepairDirfragStats(MDCache
*c
, MDRequestRef
& m
) :
12152 MDCacheLogContext(c
), mdr(m
) {}
12153 void finish(int r
) override
{
12155 get_mds()->server
->respond_to_request(mdr
, r
);
12159 void MDCache::repair_dirfrag_stats(CDir
*dir
)
12161 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_FRAGSTATS
);
12163 mdr
->internal_op_private
= dir
;
12164 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12165 repair_dirfrag_stats_work(mdr
);
12168 void MDCache::repair_dirfrag_stats_work(MDRequestRef
& mdr
)
12170 CDir
*dir
= static_cast<CDir
*>(mdr
->internal_op_private
);
12171 dout(10) << __func__
<< " " << *dir
<< dendl
;
12173 if (!dir
->is_auth()) {
12174 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12178 if (!mdr
->is_auth_pinned(dir
) && !dir
->can_auth_pin()) {
12179 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(this, mdr
));
12181 mds
->locker
->drop_locks(mdr
.get());
12182 mdr
->drop_local_auth_pins();
12183 if (!mdr
->remote_auth_pins
.empty())
12184 mds
->locker
->notify_freeze_waiter(dir
);
12188 mdr
->auth_pin(dir
);
12190 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12191 CInode
*diri
= dir
->inode
;
12192 rdlocks
.insert(&diri
->dirfragtreelock
);
12193 wrlocks
.insert(&diri
->nestlock
);
12194 wrlocks
.insert(&diri
->filelock
);
12195 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12198 if (!dir
->is_complete()) {
12199 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12203 frag_info_t frag_info
;
12204 nest_info_t nest_info
;
12205 for (auto it
= dir
->begin(); it
!= dir
->end(); ++it
) {
12206 CDentry
*dn
= it
->second
;
12207 if (dn
->last
!= CEPH_NOSNAP
)
12209 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
12210 if (dnl
->is_primary()) {
12211 CInode
*in
= dnl
->get_inode();
12212 nest_info
.add(in
->get_projected_inode()->accounted_rstat
);
12214 frag_info
.nsubdirs
++;
12216 frag_info
.nfiles
++;
12217 } else if (dnl
->is_remote())
12218 frag_info
.nfiles
++;
12221 fnode_t
*pf
= dir
->get_projected_fnode();
12222 bool good_fragstat
= frag_info
.same_sums(pf
->fragstat
);
12223 bool good_rstat
= nest_info
.same_sums(pf
->rstat
);
12224 if (good_fragstat
&& good_rstat
) {
12225 dout(10) << __func__
<< " no corruption found" << dendl
;
12226 mds
->server
->respond_to_request(mdr
, 0);
12230 pf
= dir
->project_fnode();
12231 pf
->version
= dir
->pre_dirty();
12232 mdr
->add_projected_fnode(dir
);
12234 mdr
->ls
= mds
->mdlog
->get_current_segment();
12235 EUpdate
*le
= new EUpdate(mds
->mdlog
, "repair_dirfrag");
12236 mds
->mdlog
->start_entry(le
);
12238 if (!good_fragstat
) {
12239 if (pf
->fragstat
.mtime
> frag_info
.mtime
)
12240 frag_info
.mtime
= pf
->fragstat
.mtime
;
12241 if (pf
->fragstat
.change_attr
> frag_info
.change_attr
)
12242 frag_info
.change_attr
= pf
->fragstat
.change_attr
;
12243 pf
->fragstat
= frag_info
;
12244 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12245 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12246 mdr
->add_updated_lock(&diri
->filelock
);
12250 if (pf
->rstat
.rctime
> nest_info
.rctime
)
12251 nest_info
.rctime
= pf
->rstat
.rctime
;
12252 pf
->rstat
= nest_info
;
12253 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12254 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12255 mdr
->add_updated_lock(&diri
->nestlock
);
12258 le
->metablob
.add_dir_context(dir
);
12259 le
->metablob
.add_dir(dir
, true);
12261 mds
->mdlog
->submit_entry(le
, new C_MDC_RepairDirfragStats(this, mdr
));
12264 void MDCache::repair_inode_stats(CInode
*diri
)
12266 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_REPAIR_INODESTATS
);
12268 mdr
->internal_op_private
= diri
;
12269 mdr
->internal_op_finish
= new C_MDSInternalNoop
;
12270 repair_inode_stats_work(mdr
);
12273 void MDCache::repair_inode_stats_work(MDRequestRef
& mdr
)
12275 CInode
*diri
= static_cast<CInode
*>(mdr
->internal_op_private
);
12276 dout(10) << __func__
<< " " << *diri
<< dendl
;
12278 if (!diri
->is_auth()) {
12279 mds
->server
->respond_to_request(mdr
, -ESTALE
);
12282 if (!diri
->is_dir()) {
12283 mds
->server
->respond_to_request(mdr
, -ENOTDIR
);
12287 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12288 std::list
<frag_t
> frags
;
12290 if (mdr
->ls
) // already marked filelock/nestlock dirty ?
12293 rdlocks
.insert(&diri
->dirfragtreelock
);
12294 wrlocks
.insert(&diri
->nestlock
);
12295 wrlocks
.insert(&diri
->filelock
);
12296 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12299 // Fetch all dirfrags and mark filelock/nestlock dirty. This will tirgger
12300 // the scatter-gather process, which will fix any fragstat/rstat errors.
12301 diri
->dirfragtree
.get_leaves(frags
);
12302 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12303 CDir
*dir
= diri
->get_dirfrag(*p
);
12305 assert(mdr
->is_auth_pinned(diri
));
12306 dir
= diri
->get_or_open_dirfrag(this, *p
);
12308 if (dir
->get_version() == 0) {
12309 assert(dir
->is_auth());
12310 dir
->fetch(new C_MDS_RetryRequest(this, mdr
));
12315 diri
->state_set(CInode::STATE_REPAIRSTATS
);
12316 mdr
->ls
= mds
->mdlog
->get_current_segment();
12317 mds
->locker
->mark_updated_scatterlock(&diri
->filelock
);
12318 mdr
->ls
->dirty_dirfrag_dir
.push_back(&diri
->item_dirty_dirfrag_dir
);
12319 mds
->locker
->mark_updated_scatterlock(&diri
->nestlock
);
12320 mdr
->ls
->dirty_dirfrag_nest
.push_back(&diri
->item_dirty_dirfrag_nest
);
12322 mds
->locker
->drop_locks(mdr
.get());
12325 // force the scatter-gather process
12326 rdlocks
.insert(&diri
->dirfragtreelock
);
12327 rdlocks
.insert(&diri
->nestlock
);
12328 rdlocks
.insert(&diri
->filelock
);
12330 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
12333 diri
->state_clear(CInode::STATE_REPAIRSTATS
);
12335 frag_info_t dir_info
;
12336 nest_info_t nest_info
;
12337 nest_info
.rsubdirs
++; // it gets one to account for self
12339 diri
->dirfragtree
.get_leaves(frags
);
12340 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
12341 CDir
*dir
= diri
->get_dirfrag(*p
);
12343 assert(dir
->get_version() > 0);
12344 dir_info
.add(dir
->fnode
.accounted_fragstat
);
12345 nest_info
.add(dir
->fnode
.accounted_rstat
);
12348 if (!dir_info
.same_sums(diri
->inode
.dirstat
) ||
12349 !nest_info
.same_sums(diri
->inode
.rstat
)) {
12350 dout(10) << __func__
<< " failed to fix fragstat/rstat on "
12354 mds
->server
->respond_to_request(mdr
, 0);
12357 void MDCache::flush_dentry(boost::string_view path
, Context
*fin
)
12359 if (is_readonly()) {
12360 dout(10) << __func__
<< ": read-only FS" << dendl
;
12361 fin
->complete(-EROFS
);
12364 dout(10) << "flush_dentry " << path
<< dendl
;
12365 MDRequestRef mdr
= request_start_internal(CEPH_MDS_OP_FLUSH
);
12367 mdr
->set_filepath(fp
);
12368 mdr
->internal_op_finish
= fin
;
12369 flush_dentry_work(mdr
);
12372 class C_FinishIOMDR
: public MDSInternalContextBase
{
12376 MDSRank
*get_mds() override
{ return mds
; }
12378 C_FinishIOMDR(MDSRank
*mds_
, MDRequestRef
& mdr_
) : mds(mds_
), mdr(mdr_
) {}
12379 void finish(int r
) override
{ mds
->server
->respond_to_request(mdr
, r
); }
12382 void MDCache::flush_dentry_work(MDRequestRef
& mdr
)
12384 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
12385 CInode
*in
= mds
->server
->rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
12389 // TODO: Is this necessary? Fix it if so
12390 assert(in
->is_auth());
12391 bool locked
= mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
);
12394 in
->flush(new C_FinishIOMDR(mds
, mdr
));
12399 * Initialize performance counters with global perfcounter
12402 void MDCache::register_perfcounters()
12404 PerfCountersBuilder
pcb(g_ceph_context
,
12405 "mds_cache", l_mdc_first
, l_mdc_last
);
12407 /* Stray/purge statistics */
12408 pcb
.add_u64(l_mdc_num_strays
, "num_strays",
12409 "Stray dentries", "stry", PerfCountersBuilder::PRIO_INTERESTING
);
12410 pcb
.add_u64(l_mdc_num_strays_delayed
, "num_strays_delayed", "Stray dentries delayed");
12411 pcb
.add_u64(l_mdc_num_strays_enqueuing
, "num_strays_enqueuing", "Stray dentries enqueuing for purge");
12413 pcb
.add_u64_counter(l_mdc_strays_created
, "strays_created", "Stray dentries created");
12414 pcb
.add_u64_counter(l_mdc_strays_enqueued
, "strays_enqueued",
12415 "Stray dentries enqueued for purge");
12416 pcb
.add_u64_counter(l_mdc_strays_reintegrated
, "strays_reintegrated", "Stray dentries reintegrated");
12417 pcb
.add_u64_counter(l_mdc_strays_migrated
, "strays_migrated", "Stray dentries migrated");
12420 /* Recovery queue statistics */
12421 pcb
.add_u64(l_mdc_num_recovering_processing
, "num_recovering_processing", "Files currently being recovered");
12422 pcb
.add_u64(l_mdc_num_recovering_enqueued
, "num_recovering_enqueued",
12423 "Files waiting for recovery", "recy", PerfCountersBuilder::PRIO_INTERESTING
);
12424 pcb
.add_u64(l_mdc_num_recovering_prioritized
, "num_recovering_prioritized", "Files waiting for recovery with elevated priority");
12425 pcb
.add_u64_counter(l_mdc_recovery_started
, "recovery_started", "File recoveries started");
12426 pcb
.add_u64_counter(l_mdc_recovery_completed
, "recovery_completed",
12427 "File recoveries completed", "recd", PerfCountersBuilder::PRIO_INTERESTING
);
12429 pcb
.add_u64_counter(l_mdss_ireq_enqueue_scrub
, "ireq_enqueue_scrub",
12430 "Internal Request type enqueue scrub");
12431 pcb
.add_u64_counter(l_mdss_ireq_exportdir
, "ireq_exportdir",
12432 "Internal Request type export dir");
12433 pcb
.add_u64_counter(l_mdss_ireq_flush
, "ireq_flush",
12434 "Internal Request type flush");
12435 pcb
.add_u64_counter(l_mdss_ireq_fragmentdir
, "ireq_fragmentdir",
12436 "Internal Request type fragmentdir");
12437 pcb
.add_u64_counter(l_mdss_ireq_fragstats
, "ireq_fragstats",
12438 "Internal Request type frag stats");
12439 pcb
.add_u64_counter(l_mdss_ireq_inodestats
, "ireq_inodestats",
12440 "Internal Request type inode stats");
12442 logger
.reset(pcb
.create_perf_counters());
12443 g_ceph_context
->get_perfcounters_collection()->add(logger
.get());
12444 recovery_queue
.set_logger(logger
.get());
12445 stray_manager
.set_logger(logger
.get());
12448 void MDCache::activate_stray_manager()
12451 stray_manager
.activate();
12454 new MDSInternalContextWrapper(mds
,
12455 new FunctionContext([this](int r
){
12456 stray_manager
.activate();
12464 * Call this when putting references to an inode/dentry or
12465 * when attempting to trim it.
12467 * If this inode is no longer linked by anyone, and this MDS
12468 * rank holds the primary dentry, and that dentry is in a stray
12469 * directory, then give up the dentry to the StrayManager, never
12470 * to be seen again by MDCache.
12472 * @param delay if true, then purgeable inodes are stashed til
12473 * the next trim(), rather than being purged right
12476 void MDCache::maybe_eval_stray(CInode
*in
, bool delay
) {
12477 if (in
->inode
.nlink
> 0 || in
->is_base() || is_readonly() ||
12478 mds
->get_state() <= MDSMap::STATE_REJOIN
)
12481 CDentry
*dn
= in
->get_projected_parent_dn();
12483 if (dn
->state_test(CDentry::STATE_PURGING
)) {
12484 /* We have already entered the purging process, no need
12485 * to re-evaluate me ! */
12489 if (dn
->get_projected_linkage()->is_primary() &&
12490 dn
->get_dir()->get_inode()->is_stray()) {
12491 stray_manager
.eval_stray(dn
, delay
);
12495 void MDCache::clear_dirty_bits_for_stray(CInode
* diri
) {
12496 dout(10) << __func__
<< " " << *diri
<< dendl
;
12497 assert(diri
->get_projected_parent_dir()->inode
->is_stray());
12499 diri
->get_dirfrags(ls
);
12500 for (auto &p
: ls
) {
12501 if (p
->is_auth() && !(p
->is_frozen() || p
->is_freezing()))
12502 p
->try_remove_dentries_for_stray();
12504 if (!diri
->snaprealm
) {
12505 if (diri
->is_auth())
12506 diri
->clear_dirty_rstat();
12507 diri
->clear_scatter_dirty();