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.
16 #include "include/types.h"
28 #include "LogSegment.h"
30 #include "common/bloom_filter.hpp"
31 #include "include/Context.h"
32 #include "common/Clock.h"
34 #include "osdc/Objecter.h"
36 #include "common/config.h"
37 #include "include/assert.h"
38 #include "include/compat.h"
40 #define dout_context g_ceph_context
41 #define dout_subsys ceph_subsys_mds
43 #define dout_prefix *_dout << "mds." << cache->mds->get_nodeid() << ".cache.dir(" << this->dirfrag() << ") "
45 int CDir::num_frozen_trees
= 0;
46 int CDir::num_freezing_trees
= 0;
48 class CDirContext
: public MDSInternalContextBase
52 MDSRank
* get_mds() override
{return dir
->cache
->mds
;}
55 explicit CDirContext(CDir
*d
) : dir(d
) {
61 class CDirIOContext
: public MDSIOContextBase
65 MDSRank
* get_mds() override
{return dir
->cache
->mds
;}
68 explicit CDirIOContext(CDir
*d
) : dir(d
) {
75 //int cdir_pins[CDIR_NUM_PINS] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
78 ostream
& operator<<(ostream
& out
, const CDir
& dir
)
80 out
<< "[dir " << dir
.dirfrag() << " " << dir
.get_path() << "/"
81 << " [" << dir
.first
<< ",head]";
84 if (dir
.is_replicated())
85 out
<< dir
.get_replicas();
87 if (dir
.is_projected())
88 out
<< " pv=" << dir
.get_projected_version();
89 out
<< " v=" << dir
.get_version();
90 out
<< " cv=" << dir
.get_committing_version();
91 out
<< "/" << dir
.get_committed_version();
93 mds_authority_t a
= dir
.authority();
94 out
<< " rep@" << a
.first
;
95 if (a
.second
!= CDIR_AUTH_UNKNOWN
)
96 out
<< "," << a
.second
;
97 out
<< "." << dir
.get_replica_nonce();
100 if (dir
.is_rep()) out
<< " REP";
102 if (dir
.get_dir_auth() != CDIR_AUTH_DEFAULT
) {
103 if (dir
.get_dir_auth().second
== CDIR_AUTH_UNKNOWN
)
104 out
<< " dir_auth=" << dir
.get_dir_auth().first
;
106 out
<< " dir_auth=" << dir
.get_dir_auth();
109 if (dir
.get_cum_auth_pins())
110 out
<< " ap=" << dir
.get_auth_pins()
111 << "+" << dir
.get_dir_auth_pins()
112 << "+" << dir
.get_nested_auth_pins();
114 out
<< " state=" << dir
.get_state();
115 if (dir
.state_test(CDir::STATE_COMPLETE
)) out
<< "|complete";
116 if (dir
.state_test(CDir::STATE_FREEZINGTREE
)) out
<< "|freezingtree";
117 if (dir
.state_test(CDir::STATE_FROZENTREE
)) out
<< "|frozentree";
118 if (dir
.state_test(CDir::STATE_AUXSUBTREE
)) out
<< "|auxsubtree";
119 //if (dir.state_test(CDir::STATE_FROZENTREELEAF)) out << "|frozentreeleaf";
120 if (dir
.state_test(CDir::STATE_FROZENDIR
)) out
<< "|frozendir";
121 if (dir
.state_test(CDir::STATE_FREEZINGDIR
)) out
<< "|freezingdir";
122 if (dir
.state_test(CDir::STATE_EXPORTBOUND
)) out
<< "|exportbound";
123 if (dir
.state_test(CDir::STATE_IMPORTBOUND
)) out
<< "|importbound";
124 if (dir
.state_test(CDir::STATE_BADFRAG
)) out
<< "|badfrag";
125 if (dir
.state_test(CDir::STATE_FRAGMENTING
)) out
<< "|fragmenting";
128 out
<< " " << dir
.fnode
.fragstat
;
129 if (!(dir
.fnode
.fragstat
== dir
.fnode
.accounted_fragstat
))
130 out
<< "/" << dir
.fnode
.accounted_fragstat
;
131 if (g_conf
->mds_debug_scatterstat
&& dir
.is_projected()) {
132 const fnode_t
*pf
= dir
.get_projected_fnode();
133 out
<< "->" << pf
->fragstat
;
134 if (!(pf
->fragstat
== pf
->accounted_fragstat
))
135 out
<< "/" << pf
->accounted_fragstat
;
139 out
<< " " << dir
.fnode
.rstat
;
140 if (!(dir
.fnode
.rstat
== dir
.fnode
.accounted_rstat
))
141 out
<< "/" << dir
.fnode
.accounted_rstat
;
142 if (g_conf
->mds_debug_scatterstat
&& dir
.is_projected()) {
143 const fnode_t
*pf
= dir
.get_projected_fnode();
144 out
<< "->" << pf
->rstat
;
145 if (!(pf
->rstat
== pf
->accounted_rstat
))
146 out
<< "/" << pf
->accounted_rstat
;
149 out
<< " hs=" << dir
.get_num_head_items() << "+" << dir
.get_num_head_null();
150 out
<< ",ss=" << dir
.get_num_snap_items() << "+" << dir
.get_num_snap_null();
151 if (dir
.get_num_dirty())
152 out
<< " dirty=" << dir
.get_num_dirty();
154 if (dir
.get_num_ref()) {
156 dir
.print_pin_set(out
);
164 void CDir::print(ostream
& out
)
172 ostream
& CDir::print_db_line_prefix(ostream
& out
)
174 return out
<< ceph_clock_now() << " mds." << cache
->mds
->get_nodeid() << ".cache.dir(" << this->dirfrag() << ") ";
179 // -------------------------------------------------------------------
182 CDir::CDir(CInode
*in
, frag_t fg
, MDCache
*mdcache
, bool auth
) :
183 cache(mdcache
), inode(in
), frag(fg
),
185 dirty_rstat_inodes(member_offset(CInode
, dirty_rstat_item
)),
186 projected_version(0), item_dirty(this), item_new(this),
187 num_head_items(0), num_head_null(0),
188 num_snap_items(0), num_snap_null(0),
189 num_dirty(0), committing_version(0), committed_version(0),
190 dir_auth_pins(0), request_pins(0),
192 pop_me(ceph_clock_now()),
193 pop_nested(ceph_clock_now()),
194 pop_auth_subtree(ceph_clock_now()),
195 pop_auth_subtree_nested(ceph_clock_now()),
196 num_dentries_nested(0), num_dentries_auth_subtree(0),
197 num_dentries_auth_subtree_nested(0),
198 dir_auth(CDIR_AUTH_DEFAULT
)
200 state
= STATE_INITIAL
;
202 memset(&fnode
, 0, sizeof(fnode
));
205 assert(in
->is_dir());
211 * Check the recursive statistics on size for consistency.
212 * If mds_debug_scatterstat is enabled, assert for correctness,
213 * otherwise just print out the mismatch and continue.
215 bool CDir::check_rstats(bool scrub
)
217 if (!g_conf
->mds_debug_scatterstat
&& !scrub
)
220 dout(25) << "check_rstats on " << this << dendl
;
221 if (!is_complete() || !is_auth() || is_frozen()) {
223 dout(10) << "check_rstats bailing out -- incomplete or non-auth or frozen dir!" << dendl
;
227 frag_info_t frag_info
;
228 nest_info_t nest_info
;
229 for (map_t::iterator i
= items
.begin(); i
!= items
.end(); ++i
) {
230 if (i
->second
->last
!= CEPH_NOSNAP
)
232 CDentry::linkage_t
*dnl
= i
->second
->get_linkage();
233 if (dnl
->is_primary()) {
234 CInode
*in
= dnl
->get_inode();
235 nest_info
.add(in
->inode
.accounted_rstat
);
237 frag_info
.nsubdirs
++;
240 } else if (dnl
->is_remote())
246 if(!frag_info
.same_sums(fnode
.fragstat
)) {
247 dout(1) << "mismatch between head items and fnode.fragstat! printing dentries" << dendl
;
248 dout(1) << "get_num_head_items() = " << get_num_head_items()
249 << "; fnode.fragstat.nfiles=" << fnode
.fragstat
.nfiles
250 << " fnode.fragstat.nsubdirs=" << fnode
.fragstat
.nsubdirs
<< dendl
;
253 dout(20) << "get_num_head_items() = " << get_num_head_items()
254 << "; fnode.fragstat.nfiles=" << fnode
.fragstat
.nfiles
255 << " fnode.fragstat.nsubdirs=" << fnode
.fragstat
.nsubdirs
<< dendl
;
259 if (!nest_info
.same_sums(fnode
.rstat
)) {
260 dout(1) << "mismatch between child accounted_rstats and my rstats!" << dendl
;
261 dout(1) << "total of child dentrys: " << nest_info
<< dendl
;
262 dout(1) << "my rstats: " << fnode
.rstat
<< dendl
;
265 dout(20) << "total of child dentrys: " << nest_info
<< dendl
;
266 dout(20) << "my rstats: " << fnode
.rstat
<< dendl
;
271 for (map_t::iterator i
= items
.begin(); i
!= items
.end(); ++i
) {
272 CDentry
*dn
= i
->second
;
273 if (dn
->get_linkage()->is_primary()) {
274 CInode
*in
= dn
->get_linkage()->inode
;
275 dout(1) << *dn
<< " rstat " << in
->inode
.accounted_rstat
<< dendl
;
277 dout(1) << *dn
<< dendl
;
281 assert(frag_info
.nfiles
== fnode
.fragstat
.nfiles
);
282 assert(frag_info
.nsubdirs
== fnode
.fragstat
.nsubdirs
);
283 assert(nest_info
.rbytes
== fnode
.rstat
.rbytes
);
284 assert(nest_info
.rfiles
== fnode
.rstat
.rfiles
);
285 assert(nest_info
.rsubdirs
== fnode
.rstat
.rsubdirs
);
288 dout(10) << "check_rstats complete on " << this << dendl
;
292 CDentry
*CDir::lookup(const string
& name
, snapid_t snap
)
294 dout(20) << "lookup (" << snap
<< ", '" << name
<< "')" << dendl
;
295 map_t::iterator iter
= items
.lower_bound(dentry_key_t(snap
, name
.c_str(),
296 inode
->hash_dentry_name(name
)));
297 if (iter
== items
.end())
299 if (iter
->second
->name
== name
&&
300 iter
->second
->first
<= snap
&&
301 iter
->second
->last
>= snap
) {
302 dout(20) << " hit -> " << iter
->first
<< dendl
;
305 dout(20) << " miss -> " << iter
->first
<< dendl
;
309 CDentry
*CDir::lookup_exact_snap(const string
& name
, snapid_t last
) {
310 map_t::iterator p
= items
.find(dentry_key_t(last
, name
.c_str(),
311 inode
->hash_dentry_name(name
)));
312 if (p
== items
.end())
321 CDentry
* CDir::add_null_dentry(const string
& dname
,
322 snapid_t first
, snapid_t last
)
325 assert(lookup_exact_snap(dname
, last
) == 0);
328 CDentry
* dn
= new CDentry(dname
, inode
->hash_dentry_name(dname
), first
, last
);
330 dn
->state_set(CDentry::STATE_AUTH
);
332 cache
->bottom_lru
.lru_insert_mid(dn
);
333 dn
->state_set(CDentry::STATE_BOTTOMLRU
);
336 dn
->version
= get_projected_version();
339 assert(items
.count(dn
->key()) == 0);
340 //assert(null_items.count(dn->name) == 0);
342 items
[dn
->key()] = dn
;
343 if (last
== CEPH_NOSNAP
)
348 if (state_test(CDir::STATE_DNPINNEDFRAG
)) {
349 dn
->get(CDentry::PIN_FRAGMENTING
);
350 dn
->state_set(CDentry::STATE_FRAGMENTING
);
353 dout(12) << "add_null_dentry " << *dn
<< dendl
;
356 if (get_num_any() == 1)
359 assert(get_num_any() == items
.size());
364 CDentry
* CDir::add_primary_dentry(const string
& dname
, CInode
*in
,
365 snapid_t first
, snapid_t last
)
368 assert(lookup_exact_snap(dname
, last
) == 0);
371 CDentry
* dn
= new CDentry(dname
, inode
->hash_dentry_name(dname
), first
, last
);
373 dn
->state_set(CDentry::STATE_AUTH
);
374 if (is_auth() || !inode
->is_stray()) {
375 cache
->lru
.lru_insert_mid(dn
);
377 cache
->bottom_lru
.lru_insert_mid(dn
);
378 dn
->state_set(CDentry::STATE_BOTTOMLRU
);
382 dn
->version
= get_projected_version();
385 assert(items
.count(dn
->key()) == 0);
386 //assert(null_items.count(dn->name) == 0);
388 items
[dn
->key()] = dn
;
390 dn
->get_linkage()->inode
= in
;
391 in
->set_primary_parent(dn
);
393 link_inode_work(dn
, in
);
395 if (dn
->last
== CEPH_NOSNAP
)
400 if (state_test(CDir::STATE_DNPINNEDFRAG
)) {
401 dn
->get(CDentry::PIN_FRAGMENTING
);
402 dn
->state_set(CDentry::STATE_FRAGMENTING
);
405 dout(12) << "add_primary_dentry " << *dn
<< dendl
;
408 if (get_num_any() == 1)
410 assert(get_num_any() == items
.size());
414 CDentry
* CDir::add_remote_dentry(const string
& dname
, inodeno_t ino
, unsigned char d_type
,
415 snapid_t first
, snapid_t last
)
418 assert(lookup_exact_snap(dname
, last
) == 0);
421 CDentry
* dn
= new CDentry(dname
, inode
->hash_dentry_name(dname
), ino
, d_type
, first
, last
);
423 dn
->state_set(CDentry::STATE_AUTH
);
424 cache
->lru
.lru_insert_mid(dn
);
427 dn
->version
= get_projected_version();
430 assert(items
.count(dn
->key()) == 0);
431 //assert(null_items.count(dn->name) == 0);
433 items
[dn
->key()] = dn
;
434 if (last
== CEPH_NOSNAP
)
439 if (state_test(CDir::STATE_DNPINNEDFRAG
)) {
440 dn
->get(CDentry::PIN_FRAGMENTING
);
441 dn
->state_set(CDentry::STATE_FRAGMENTING
);
444 dout(12) << "add_remote_dentry " << *dn
<< dendl
;
447 if (get_num_any() == 1)
450 assert(get_num_any() == items
.size());
456 void CDir::remove_dentry(CDentry
*dn
)
458 dout(12) << "remove_dentry " << *dn
<< dendl
;
460 // there should be no client leases at this point!
461 assert(dn
->client_lease_map
.empty());
463 if (state_test(CDir::STATE_DNPINNEDFRAG
)) {
464 dn
->put(CDentry::PIN_FRAGMENTING
);
465 dn
->state_clear(CDentry::STATE_FRAGMENTING
);
468 if (dn
->get_linkage()->is_null()) {
469 if (dn
->last
== CEPH_NOSNAP
)
474 if (dn
->last
== CEPH_NOSNAP
)
480 if (!dn
->get_linkage()->is_null())
481 // detach inode and dentry
482 unlink_inode_work(dn
);
485 assert(items
.count(dn
->key()) == 1);
486 items
.erase(dn
->key());
492 if (dn
->state_test(CDentry::STATE_BOTTOMLRU
))
493 cache
->bottom_lru
.lru_remove(dn
);
495 cache
->lru
.lru_remove(dn
);
499 if (get_num_any() == 0)
501 assert(get_num_any() == items
.size());
504 void CDir::link_remote_inode(CDentry
*dn
, CInode
*in
)
506 link_remote_inode(dn
, in
->ino(), IFTODT(in
->get_projected_inode()->mode
));
509 void CDir::link_remote_inode(CDentry
*dn
, inodeno_t ino
, unsigned char d_type
)
511 dout(12) << "link_remote_inode " << *dn
<< " remote " << ino
<< dendl
;
512 assert(dn
->get_linkage()->is_null());
514 dn
->get_linkage()->set_remote(ino
, d_type
);
516 if (dn
->state_test(CDentry::STATE_BOTTOMLRU
)) {
517 cache
->bottom_lru
.lru_remove(dn
);
518 cache
->lru
.lru_insert_mid(dn
);
519 dn
->state_clear(CDentry::STATE_BOTTOMLRU
);
522 if (dn
->last
== CEPH_NOSNAP
) {
529 assert(get_num_any() == items
.size());
532 void CDir::link_primary_inode(CDentry
*dn
, CInode
*in
)
534 dout(12) << "link_primary_inode " << *dn
<< " " << *in
<< dendl
;
535 assert(dn
->get_linkage()->is_null());
537 dn
->get_linkage()->inode
= in
;
538 in
->set_primary_parent(dn
);
540 link_inode_work(dn
, in
);
542 if (dn
->state_test(CDentry::STATE_BOTTOMLRU
) &&
543 (is_auth() || !inode
->is_stray())) {
544 cache
->bottom_lru
.lru_remove(dn
);
545 cache
->lru
.lru_insert_mid(dn
);
546 dn
->state_clear(CDentry::STATE_BOTTOMLRU
);
549 if (dn
->last
== CEPH_NOSNAP
) {
557 assert(get_num_any() == items
.size());
560 void CDir::link_inode_work( CDentry
*dn
, CInode
*in
)
562 assert(dn
->get_linkage()->get_inode() == in
);
563 assert(in
->get_parent_dn() == dn
);
566 //in->inode.version = dn->get_version();
569 if (in
->get_num_ref())
570 dn
->get(CDentry::PIN_INODEPIN
);
572 // adjust auth pin count
573 if (in
->auth_pins
+ in
->nested_auth_pins
)
574 dn
->adjust_nested_auth_pins(in
->auth_pins
+ in
->nested_auth_pins
, in
->auth_pins
, NULL
);
576 // verify open snaprealm parent
578 in
->snaprealm
->adjust_parent();
579 else if (in
->is_any_caps())
580 in
->move_to_realm(inode
->find_snaprealm());
583 void CDir::unlink_inode(CDentry
*dn
, bool adjust_lru
)
585 if (dn
->get_linkage()->is_primary()) {
586 dout(12) << "unlink_inode " << *dn
<< " " << *dn
->get_linkage()->get_inode() << dendl
;
588 dout(12) << "unlink_inode " << *dn
<< dendl
;
591 unlink_inode_work(dn
);
593 if (adjust_lru
&& !dn
->state_test(CDentry::STATE_BOTTOMLRU
)) {
594 cache
->lru
.lru_remove(dn
);
595 cache
->bottom_lru
.lru_insert_mid(dn
);
596 dn
->state_set(CDentry::STATE_BOTTOMLRU
);
599 if (dn
->last
== CEPH_NOSNAP
) {
606 assert(get_num_any() == items
.size());
610 void CDir::try_remove_unlinked_dn(CDentry
*dn
)
612 assert(dn
->dir
== this);
613 assert(dn
->get_linkage()->is_null());
615 // no pins (besides dirty)?
616 if (dn
->get_num_ref() != dn
->is_dirty())
621 dout(10) << "try_remove_unlinked_dn " << *dn
<< " in " << *this << dendl
;
626 // NOTE: we may not have any more dirty dentries, but the fnode
627 // still changed, so the directory must remain dirty.
632 void CDir::unlink_inode_work( CDentry
*dn
)
634 CInode
*in
= dn
->get_linkage()->get_inode();
636 if (dn
->get_linkage()->is_remote()) {
639 dn
->unlink_remote(dn
->get_linkage());
641 dn
->get_linkage()->set_remote(0, 0);
642 } else if (dn
->get_linkage()->is_primary()) {
645 if (in
->get_num_ref())
646 dn
->put(CDentry::PIN_INODEPIN
);
648 // unlink auth_pin count
649 if (in
->auth_pins
+ in
->nested_auth_pins
)
650 dn
->adjust_nested_auth_pins(0 - (in
->auth_pins
+ in
->nested_auth_pins
), 0 - in
->auth_pins
, NULL
);
653 in
->remove_primary_parent(dn
);
654 dn
->get_linkage()->inode
= 0;
656 assert(!dn
->get_linkage()->is_null());
660 void CDir::add_to_bloom(CDentry
*dn
)
662 assert(dn
->last
== CEPH_NOSNAP
);
664 /* not create bloom filter for incomplete dir that was added by log replay */
668 /* don't maintain bloom filters in standby replay (saves cycles, and also
669 * avoids need to implement clearing it in EExport for #16924) */
670 if (cache
->mds
->is_standby_replay()) {
674 unsigned size
= get_num_head_items() + get_num_snap_items();
675 if (size
< 100) size
= 100;
676 bloom
.reset(new bloom_filter(size
, 1.0 / size
, 0));
678 /* This size and false positive probability is completely random.*/
679 bloom
->insert(dn
->name
.c_str(), dn
->name
.size());
682 bool CDir::is_in_bloom(const string
& name
)
686 return bloom
->contains(name
.c_str(), name
.size());
689 void CDir::remove_null_dentries() {
690 dout(12) << "remove_null_dentries " << *this << dendl
;
692 CDir::map_t::iterator p
= items
.begin();
693 while (p
!= items
.end()) {
694 CDentry
*dn
= p
->second
;
696 if (dn
->get_linkage()->is_null() && !dn
->is_projected())
700 assert(num_snap_null
== 0);
701 assert(num_head_null
== 0);
702 assert(get_num_any() == items
.size());
705 /** remove dirty null dentries for deleted directory. the dirfrag will be
706 * deleted soon, so it's safe to not commit dirty dentries.
708 * This is called when a directory is being deleted, a prerequisite
709 * of which is that its children have been unlinked: we expect to only see
710 * null, unprojected dentries here.
712 void CDir::try_remove_dentries_for_stray()
714 dout(10) << __func__
<< dendl
;
715 assert(get_parent_dir()->inode
->is_stray());
717 // clear dirty only when the directory was not snapshotted
718 bool clear_dirty
= !inode
->snaprealm
;
720 CDir::map_t::iterator p
= items
.begin();
721 while (p
!= items
.end()) {
722 CDentry
*dn
= p
->second
;
724 if (dn
->last
== CEPH_NOSNAP
) {
725 assert(!dn
->is_projected());
726 assert(dn
->get_linkage()->is_null());
727 if (clear_dirty
&& dn
->is_dirty())
729 // It's OK to remove lease prematurely because we will never link
730 // the dentry to inode again.
731 if (dn
->is_any_leases())
732 dn
->remove_client_leases(cache
->mds
->locker
);
733 if (dn
->get_num_ref() == 0)
736 assert(!dn
->is_projected());
737 CDentry::linkage_t
*dnl
= dn
->get_linkage();
739 if (dnl
->is_primary()) {
740 in
= dnl
->get_inode();
741 if (clear_dirty
&& in
->is_dirty())
744 if (clear_dirty
&& dn
->is_dirty())
746 if (dn
->get_num_ref() == 0) {
749 cache
->remove_inode(in
);
754 if (clear_dirty
&& is_dirty())
758 bool CDir::try_trim_snap_dentry(CDentry
*dn
, const set
<snapid_t
>& snaps
)
760 assert(dn
->last
!= CEPH_NOSNAP
);
761 set
<snapid_t
>::const_iterator p
= snaps
.lower_bound(dn
->first
);
762 CDentry::linkage_t
*dnl
= dn
->get_linkage();
764 if (dnl
->is_primary())
765 in
= dnl
->get_inode();
766 if ((p
== snaps
.end() || *p
> dn
->last
) &&
767 (dn
->get_num_ref() == dn
->is_dirty()) &&
768 (!in
|| in
->get_num_ref() == in
->is_dirty())) {
769 dout(10) << " purging snapped " << *dn
<< dendl
;
770 if (in
&& in
->is_dirty())
774 dout(10) << " purging snapped " << *in
<< dendl
;
775 cache
->remove_inode(in
);
783 void CDir::purge_stale_snap_data(const set
<snapid_t
>& snaps
)
785 dout(10) << "purge_stale_snap_data " << snaps
<< dendl
;
787 CDir::map_t::iterator p
= items
.begin();
788 while (p
!= items
.end()) {
789 CDentry
*dn
= p
->second
;
792 if (dn
->last
== CEPH_NOSNAP
)
795 try_trim_snap_dentry(dn
, snaps
);
801 * steal_dentry -- semi-violently move a dentry from one CDir to another
802 * (*) violently, in that nitems, most pins, etc. are not correctly maintained
803 * on the old CDir corpse; must call finish_old_fragment() when finished.
805 void CDir::steal_dentry(CDentry
*dn
)
807 dout(15) << "steal_dentry " << *dn
<< dendl
;
809 items
[dn
->key()] = dn
;
811 dn
->dir
->items
.erase(dn
->key());
812 if (dn
->dir
->items
.empty())
813 dn
->dir
->put(PIN_CHILD
);
815 if (get_num_any() == 0)
817 if (dn
->get_linkage()->is_null()) {
818 if (dn
->last
== CEPH_NOSNAP
)
822 } else if (dn
->last
== CEPH_NOSNAP
) {
825 if (dn
->get_linkage()->is_primary()) {
826 CInode
*in
= dn
->get_linkage()->get_inode();
827 inode_t
*pi
= in
->get_projected_inode();
828 if (dn
->get_linkage()->get_inode()->is_dir())
829 fnode
.fragstat
.nsubdirs
++;
831 fnode
.fragstat
.nfiles
++;
832 fnode
.rstat
.rbytes
+= pi
->accounted_rstat
.rbytes
;
833 fnode
.rstat
.rfiles
+= pi
->accounted_rstat
.rfiles
;
834 fnode
.rstat
.rsubdirs
+= pi
->accounted_rstat
.rsubdirs
;
835 fnode
.rstat
.rsnaprealms
+= pi
->accounted_rstat
.rsnaprealms
;
836 if (pi
->accounted_rstat
.rctime
> fnode
.rstat
.rctime
)
837 fnode
.rstat
.rctime
= pi
->accounted_rstat
.rctime
;
839 // move dirty inode rstat to new dirfrag
840 if (in
->is_dirty_rstat())
841 dirty_rstat_inodes
.push_back(&in
->dirty_rstat_item
);
842 } else if (dn
->get_linkage()->is_remote()) {
843 if (dn
->get_linkage()->get_remote_d_type() == DT_DIR
)
844 fnode
.fragstat
.nsubdirs
++;
846 fnode
.fragstat
.nfiles
++;
850 if (dn
->get_linkage()->is_primary()) {
851 CInode
*in
= dn
->get_linkage()->get_inode();
852 if (in
->is_dirty_rstat())
853 dirty_rstat_inodes
.push_back(&in
->dirty_rstat_item
);
857 if (dn
->auth_pins
|| dn
->nested_auth_pins
) {
858 // use the helpers here to maintain the auth_pin invariants on the dir inode
859 int ap
= dn
->get_num_auth_pins() + dn
->get_num_nested_auth_pins();
860 int dap
= dn
->get_num_dir_auth_pins();
862 adjust_nested_auth_pins(ap
, dap
, NULL
);
863 dn
->dir
->adjust_nested_auth_pins(-ap
, -dap
, NULL
);
872 void CDir::prepare_old_fragment(map
<string_snap_t
, std::list
<MDSInternalContextBase
*> >& dentry_waiters
, bool replay
)
874 // auth_pin old fragment for duration so that any auth_pinning
875 // during the dentry migration doesn't trigger side effects
876 if (!replay
&& is_auth())
879 if (!waiting_on_dentry
.empty()) {
880 for (auto p
= waiting_on_dentry
.begin(); p
!= waiting_on_dentry
.end(); ++p
)
881 dentry_waiters
[p
->first
].swap(p
->second
);
882 waiting_on_dentry
.clear();
887 void CDir::prepare_new_fragment(bool replay
)
889 if (!replay
&& is_auth()) {
893 inode
->add_dirfrag(this);
896 void CDir::finish_old_fragment(list
<MDSInternalContextBase
*>& waiters
, bool replay
)
898 // take waiters _before_ unfreeze...
900 take_waiting(WAIT_ANY_MASK
, waiters
);
902 auth_unpin(this); // pinned in prepare_old_fragment
903 assert(is_frozen_dir());
908 assert(nested_auth_pins
== 0);
909 assert(dir_auth_pins
== 0);
910 assert(auth_pins
== 0);
912 num_head_items
= num_head_null
= 0;
913 num_snap_items
= num_snap_null
= 0;
915 // this mirrors init_fragment_pins()
920 if (state_test(STATE_IMPORTBOUND
))
921 put(PIN_IMPORTBOUND
);
922 if (state_test(STATE_EXPORTBOUND
))
923 put(PIN_EXPORTBOUND
);
924 if (is_subtree_root())
930 assert(get_num_ref() == (state_test(STATE_STICKY
) ? 1:0));
933 void CDir::init_fragment_pins()
935 if (!replica_map
.empty())
937 if (state_test(STATE_DIRTY
))
939 if (state_test(STATE_EXPORTBOUND
))
940 get(PIN_EXPORTBOUND
);
941 if (state_test(STATE_IMPORTBOUND
))
942 get(PIN_IMPORTBOUND
);
943 if (is_subtree_root())
947 void CDir::split(int bits
, list
<CDir
*>& subs
, list
<MDSInternalContextBase
*>& waiters
, bool replay
)
949 dout(10) << "split by " << bits
<< " bits on " << *this << dendl
;
951 assert(replay
|| is_complete() || !is_auth());
954 frag
.split(bits
, frags
);
956 vector
<CDir
*> subfrags(1 << bits
);
958 double fac
= 1.0 / (double)(1 << bits
); // for scaling load vecs
960 version_t rstat_version
= inode
->get_projected_inode()->rstat
.version
;
961 version_t dirstat_version
= inode
->get_projected_inode()->dirstat
.version
;
963 nest_info_t rstatdiff
;
964 frag_info_t fragstatdiff
;
965 if (fnode
.accounted_rstat
.version
== rstat_version
)
966 rstatdiff
.add_delta(fnode
.accounted_rstat
, fnode
.rstat
);
967 if (fnode
.accounted_fragstat
.version
== dirstat_version
)
968 fragstatdiff
.add_delta(fnode
.accounted_fragstat
, fnode
.fragstat
);
969 dout(10) << " rstatdiff " << rstatdiff
<< " fragstatdiff " << fragstatdiff
<< dendl
;
971 map
<string_snap_t
, std::list
<MDSInternalContextBase
*> > dentry_waiters
;
972 prepare_old_fragment(dentry_waiters
, replay
);
974 // create subfrag dirs
976 for (list
<frag_t
>::iterator p
= frags
.begin(); p
!= frags
.end(); ++p
) {
977 CDir
*f
= new CDir(inode
, *p
, cache
, is_auth());
978 f
->state_set(state
& (MASK_STATE_FRAGMENT_KEPT
| STATE_COMPLETE
));
979 f
->replica_map
= replica_map
;
980 f
->dir_auth
= dir_auth
;
981 f
->init_fragment_pins();
982 f
->set_version(get_version());
985 f
->pop_me
.scale(fac
);
987 // FIXME; this is an approximation
988 f
->pop_nested
= pop_nested
;
989 f
->pop_nested
.scale(fac
);
990 f
->pop_auth_subtree
= pop_auth_subtree
;
991 f
->pop_auth_subtree
.scale(fac
);
992 f
->pop_auth_subtree_nested
= pop_auth_subtree_nested
;
993 f
->pop_auth_subtree_nested
.scale(fac
);
995 dout(10) << " subfrag " << *p
<< " " << *f
<< dendl
;
999 f
->set_dir_auth(get_dir_auth());
1000 f
->prepare_new_fragment(replay
);
1003 // repartition dentries
1004 while (!items
.empty()) {
1005 CDir::map_t::iterator p
= items
.begin();
1007 CDentry
*dn
= p
->second
;
1008 frag_t subfrag
= inode
->pick_dirfrag(dn
->name
);
1009 int n
= (subfrag
.value() & (subfrag
.mask() ^ frag
.mask())) >> subfrag
.mask_shift();
1010 dout(15) << " subfrag " << subfrag
<< " n=" << n
<< " for " << p
->first
<< dendl
;
1011 CDir
*f
= subfrags
[n
];
1012 f
->steal_dentry(dn
);
1015 for (auto& p
: dentry_waiters
) {
1016 frag_t subfrag
= inode
->pick_dirfrag(p
.first
.name
);
1017 int n
= (subfrag
.value() & (subfrag
.mask() ^ frag
.mask())) >> subfrag
.mask_shift();
1018 CDir
*f
= subfrags
[n
];
1020 if (f
->waiting_on_dentry
.empty())
1021 f
->get(PIN_DNWAITER
);
1022 f
->waiting_on_dentry
[p
.first
].swap(p
.second
);
1025 // FIXME: handle dirty old rstat
1027 // fix up new frag fragstats
1028 for (int i
=0; i
<n
; i
++) {
1029 CDir
*f
= subfrags
[i
];
1030 f
->fnode
.rstat
.version
= rstat_version
;
1031 f
->fnode
.accounted_rstat
= f
->fnode
.rstat
;
1032 f
->fnode
.fragstat
.version
= dirstat_version
;
1033 f
->fnode
.accounted_fragstat
= f
->fnode
.fragstat
;
1034 dout(10) << " rstat " << f
->fnode
.rstat
<< " fragstat " << f
->fnode
.fragstat
1035 << " on " << *f
<< dendl
;
1038 // give any outstanding frag stat differential to first frag
1039 dout(10) << " giving rstatdiff " << rstatdiff
<< " fragstatdiff" << fragstatdiff
1040 << " to " << *subfrags
[0] << dendl
;
1041 subfrags
[0]->fnode
.accounted_rstat
.add(rstatdiff
);
1042 subfrags
[0]->fnode
.accounted_fragstat
.add(fragstatdiff
);
1044 finish_old_fragment(waiters
, replay
);
1047 void CDir::merge(list
<CDir
*>& subs
, list
<MDSInternalContextBase
*>& waiters
, bool replay
)
1049 dout(10) << "merge " << subs
<< dendl
;
1051 mds_authority_t new_auth
= CDIR_AUTH_DEFAULT
;
1052 for (auto dir
: subs
) {
1053 if (dir
->get_dir_auth() != CDIR_AUTH_DEFAULT
&&
1054 dir
->get_dir_auth() != new_auth
) {
1055 assert(new_auth
== CDIR_AUTH_DEFAULT
);
1056 new_auth
= dir
->get_dir_auth();
1060 set_dir_auth(new_auth
);
1061 prepare_new_fragment(replay
);
1063 nest_info_t rstatdiff
;
1064 frag_info_t fragstatdiff
;
1065 bool touched_mtime
, touched_chattr
;
1066 version_t rstat_version
= inode
->get_projected_inode()->rstat
.version
;
1067 version_t dirstat_version
= inode
->get_projected_inode()->dirstat
.version
;
1069 map
<string_snap_t
, std::list
<MDSInternalContextBase
*> > dentry_waiters
;
1071 for (auto dir
: subs
) {
1072 dout(10) << " subfrag " << dir
->get_frag() << " " << *dir
<< dendl
;
1073 assert(!dir
->is_auth() || dir
->is_complete() || replay
);
1075 if (dir
->fnode
.accounted_rstat
.version
== rstat_version
)
1076 rstatdiff
.add_delta(dir
->fnode
.accounted_rstat
, dir
->fnode
.rstat
);
1077 if (dir
->fnode
.accounted_fragstat
.version
== dirstat_version
)
1078 fragstatdiff
.add_delta(dir
->fnode
.accounted_fragstat
, dir
->fnode
.fragstat
,
1079 &touched_mtime
, &touched_chattr
);
1081 dir
->prepare_old_fragment(dentry_waiters
, replay
);
1084 while (!dir
->items
.empty())
1085 steal_dentry(dir
->items
.begin()->second
);
1087 // merge replica map
1088 for (compact_map
<mds_rank_t
,unsigned>::iterator p
= dir
->replicas_begin();
1089 p
!= dir
->replicas_end();
1091 unsigned cur
= replica_map
[p
->first
];
1092 if (p
->second
> cur
)
1093 replica_map
[p
->first
] = p
->second
;
1097 if (dir
->get_version() > get_version())
1098 set_version(dir
->get_version());
1101 state_set(dir
->get_state() & MASK_STATE_FRAGMENT_KEPT
);
1103 dir
->finish_old_fragment(waiters
, replay
);
1104 inode
->close_dirfrag(dir
->get_frag());
1107 if (!dentry_waiters
.empty()) {
1109 for (auto& p
: dentry_waiters
) {
1110 waiting_on_dentry
[p
.first
].swap(p
.second
);
1114 if (is_auth() && !replay
)
1117 // FIXME: merge dirty old rstat
1118 fnode
.rstat
.version
= rstat_version
;
1119 fnode
.accounted_rstat
= fnode
.rstat
;
1120 fnode
.accounted_rstat
.add(rstatdiff
);
1122 fnode
.fragstat
.version
= dirstat_version
;
1123 fnode
.accounted_fragstat
= fnode
.fragstat
;
1124 fnode
.accounted_fragstat
.add(fragstatdiff
);
1126 init_fragment_pins();
1132 void CDir::resync_accounted_fragstat()
1134 fnode_t
*pf
= get_projected_fnode();
1135 inode_t
*pi
= inode
->get_projected_inode();
1137 if (pf
->accounted_fragstat
.version
!= pi
->dirstat
.version
) {
1138 pf
->fragstat
.version
= pi
->dirstat
.version
;
1139 dout(10) << "resync_accounted_fragstat " << pf
->accounted_fragstat
<< " -> " << pf
->fragstat
<< dendl
;
1140 pf
->accounted_fragstat
= pf
->fragstat
;
1145 * resync rstat and accounted_rstat with inode
1147 void CDir::resync_accounted_rstat()
1149 fnode_t
*pf
= get_projected_fnode();
1150 inode_t
*pi
= inode
->get_projected_inode();
1152 if (pf
->accounted_rstat
.version
!= pi
->rstat
.version
) {
1153 pf
->rstat
.version
= pi
->rstat
.version
;
1154 dout(10) << "resync_accounted_rstat " << pf
->accounted_rstat
<< " -> " << pf
->rstat
<< dendl
;
1155 pf
->accounted_rstat
= pf
->rstat
;
1156 dirty_old_rstat
.clear();
1160 void CDir::assimilate_dirty_rstat_inodes()
1162 dout(10) << "assimilate_dirty_rstat_inodes" << dendl
;
1163 for (elist
<CInode
*>::iterator p
= dirty_rstat_inodes
.begin_use_current();
1166 assert(in
->is_auth());
1167 if (in
->is_frozen())
1170 inode_t
*pi
= in
->project_inode();
1171 pi
->version
= in
->pre_dirty();
1173 inode
->mdcache
->project_rstat_inode_to_frag(in
, this, 0, 0, NULL
);
1175 state_set(STATE_ASSIMRSTAT
);
1176 dout(10) << "assimilate_dirty_rstat_inodes done" << dendl
;
1179 void CDir::assimilate_dirty_rstat_inodes_finish(MutationRef
& mut
, EMetaBlob
*blob
)
1181 if (!state_test(STATE_ASSIMRSTAT
))
1183 state_clear(STATE_ASSIMRSTAT
);
1184 dout(10) << "assimilate_dirty_rstat_inodes_finish" << dendl
;
1185 elist
<CInode
*>::iterator p
= dirty_rstat_inodes
.begin_use_current();
1190 if (in
->is_frozen())
1193 CDentry
*dn
= in
->get_projected_parent_dn();
1196 mut
->add_projected_inode(in
);
1198 in
->clear_dirty_rstat();
1199 blob
->add_primary_dentry(dn
, in
, true);
1202 if (!dirty_rstat_inodes
.empty())
1203 inode
->mdcache
->mds
->locker
->mark_updated_scatterlock(&inode
->nestlock
);
1209 /****************************************
1213 void CDir::add_dentry_waiter(const string
& dname
, snapid_t snapid
, MDSInternalContextBase
*c
)
1215 if (waiting_on_dentry
.empty())
1217 waiting_on_dentry
[string_snap_t(dname
, snapid
)].push_back(c
);
1218 dout(10) << "add_dentry_waiter dentry " << dname
1219 << " snap " << snapid
1220 << " " << c
<< " on " << *this << dendl
;
1223 void CDir::take_dentry_waiting(const string
& dname
, snapid_t first
, snapid_t last
,
1224 list
<MDSInternalContextBase
*>& ls
)
1226 if (waiting_on_dentry
.empty())
1229 string_snap_t
lb(dname
, first
);
1230 string_snap_t
ub(dname
, last
);
1231 compact_map
<string_snap_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_on_dentry
.lower_bound(lb
);
1232 while (p
!= waiting_on_dentry
.end() &&
1234 dout(10) << "take_dentry_waiting dentry " << dname
1235 << " [" << first
<< "," << last
<< "] found waiter on snap "
1237 << " on " << *this << dendl
;
1238 ls
.splice(ls
.end(), p
->second
);
1239 waiting_on_dentry
.erase(p
++);
1242 if (waiting_on_dentry
.empty())
1246 void CDir::take_sub_waiting(list
<MDSInternalContextBase
*>& ls
)
1248 dout(10) << "take_sub_waiting" << dendl
;
1249 if (!waiting_on_dentry
.empty()) {
1250 for (compact_map
<string_snap_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_on_dentry
.begin();
1251 p
!= waiting_on_dentry
.end();
1253 ls
.splice(ls
.end(), p
->second
);
1254 waiting_on_dentry
.clear();
1261 void CDir::add_waiter(uint64_t tag
, MDSInternalContextBase
*c
)
1266 if (tag
& WAIT_ATFREEZEROOT
) {
1267 if (!(is_freezing_tree_root() || is_frozen_tree_root() ||
1268 is_freezing_dir() || is_frozen_dir())) {
1270 dout(10) << "add_waiter " << std::hex
<< tag
<< std::dec
<< " " << c
<< " should be ATFREEZEROOT, " << *this << " is not root, trying parent" << dendl
;
1271 inode
->parent
->dir
->add_waiter(tag
, c
);
1277 if (tag
& WAIT_ATSUBTREEROOT
) {
1278 if (!is_subtree_root()) {
1280 dout(10) << "add_waiter " << std::hex
<< tag
<< std::dec
<< " " << c
<< " should be ATSUBTREEROOT, " << *this << " is not root, trying parent" << dendl
;
1281 inode
->parent
->dir
->add_waiter(tag
, c
);
1286 assert(!(tag
& WAIT_CREATED
) || state_test(STATE_CREATING
));
1288 MDSCacheObject::add_waiter(tag
, c
);
1293 /* NOTE: this checks dentry waiters too */
1294 void CDir::take_waiting(uint64_t mask
, list
<MDSInternalContextBase
*>& ls
)
1296 if ((mask
& WAIT_DENTRY
) && !waiting_on_dentry
.empty()) {
1297 // take all dentry waiters
1298 while (!waiting_on_dentry
.empty()) {
1299 compact_map
<string_snap_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_on_dentry
.begin();
1300 dout(10) << "take_waiting dentry " << p
->first
.name
1301 << " snap " << p
->first
.snapid
<< " on " << *this << dendl
;
1302 ls
.splice(ls
.end(), p
->second
);
1303 waiting_on_dentry
.erase(p
);
1309 MDSCacheObject::take_waiting(mask
, ls
);
1313 void CDir::finish_waiting(uint64_t mask
, int result
)
1315 dout(11) << "finish_waiting mask " << hex
<< mask
<< dec
<< " result " << result
<< " on " << *this << dendl
;
1317 list
<MDSInternalContextBase
*> finished
;
1318 take_waiting(mask
, finished
);
1320 finish_contexts(g_ceph_context
, finished
, result
);
1322 cache
->mds
->queue_waiters(finished
);
1329 fnode_t
*CDir::project_fnode()
1331 assert(get_version() != 0);
1332 fnode_t
*p
= new fnode_t
;
1333 *p
= *get_projected_fnode();
1334 projected_fnode
.push_back(p
);
1336 if (scrub_infop
&& scrub_infop
->last_scrub_dirty
) {
1337 p
->localized_scrub_stamp
= scrub_infop
->last_local
.time
;
1338 p
->localized_scrub_version
= scrub_infop
->last_local
.version
;
1339 p
->recursive_scrub_stamp
= scrub_infop
->last_recursive
.time
;
1340 p
->recursive_scrub_version
= scrub_infop
->last_recursive
.version
;
1341 scrub_infop
->last_scrub_dirty
= false;
1342 scrub_maybe_delete_info();
1345 dout(10) << "project_fnode " << p
<< dendl
;
1349 void CDir::pop_and_dirty_projected_fnode(LogSegment
*ls
)
1351 assert(!projected_fnode
.empty());
1352 dout(15) << "pop_and_dirty_projected_fnode " << projected_fnode
.front()
1353 << " v" << projected_fnode
.front()->version
<< dendl
;
1354 fnode
= *projected_fnode
.front();
1356 delete projected_fnode
.front();
1357 projected_fnode
.pop_front();
1361 version_t
CDir::pre_dirty(version_t min
)
1363 if (min
> projected_version
)
1364 projected_version
= min
;
1365 ++projected_version
;
1366 dout(10) << "pre_dirty " << projected_version
<< dendl
;
1367 return projected_version
;
1370 void CDir::mark_dirty(version_t pv
, LogSegment
*ls
)
1372 assert(get_version() < pv
);
1373 assert(pv
<= projected_version
);
1378 void CDir::_mark_dirty(LogSegment
*ls
)
1380 if (!state_test(STATE_DIRTY
)) {
1381 dout(10) << "mark_dirty (was clean) " << *this << " version " << get_version() << dendl
;
1385 dout(10) << "mark_dirty (already dirty) " << *this << " version " << get_version() << dendl
;
1388 ls
->dirty_dirfrags
.push_back(&item_dirty
);
1390 // if i've never committed, i need to be before _any_ mention of me is trimmed from the journal.
1391 if (committed_version
== 0 && !item_new
.is_on_list())
1392 ls
->new_dirfrags
.push_back(&item_new
);
1396 void CDir::mark_new(LogSegment
*ls
)
1398 ls
->new_dirfrags
.push_back(&item_new
);
1399 state_clear(STATE_CREATING
);
1401 list
<MDSInternalContextBase
*> waiters
;
1402 take_waiting(CDir::WAIT_CREATED
, waiters
);
1403 cache
->mds
->queue_waiters(waiters
);
1406 void CDir::mark_clean()
1408 dout(10) << "mark_clean " << *this << " version " << get_version() << dendl
;
1409 if (state_test(STATE_DIRTY
)) {
1410 item_dirty
.remove_myself();
1411 item_new
.remove_myself();
1413 state_clear(STATE_DIRTY
);
1418 // caller should hold auth pin of this
1419 void CDir::log_mark_dirty()
1421 if (is_dirty() || is_projected())
1422 return; // noop if it is already dirty or will be dirty
1424 version_t pv
= pre_dirty();
1425 mark_dirty(pv
, cache
->mds
->mdlog
->get_current_segment());
1428 void CDir::mark_complete() {
1429 state_set(STATE_COMPLETE
);
1433 void CDir::first_get()
1435 inode
->get(CInode::PIN_DIRFRAG
);
1438 void CDir::last_put()
1440 inode
->put(CInode::PIN_DIRFRAG
);
1445 /******************************************************************************
1449 // -----------------------
1451 void CDir::fetch(MDSInternalContextBase
*c
, bool ignore_authpinnability
)
1454 return fetch(c
, want
, ignore_authpinnability
);
1457 void CDir::fetch(MDSInternalContextBase
*c
, const string
& want_dn
, bool ignore_authpinnability
)
1459 dout(10) << "fetch on " << *this << dendl
;
1462 assert(!is_complete());
1464 if (!can_auth_pin() && !ignore_authpinnability
) {
1466 dout(7) << "fetch waiting for authpinnable" << dendl
;
1467 add_waiter(WAIT_UNFREEZE
, c
);
1469 dout(7) << "fetch not authpinnable and no context" << dendl
;
1473 // unlinked directory inode shouldn't have any entry
1474 if (!inode
->is_base() && get_parent_dir()->inode
->is_stray() &&
1475 !inode
->snaprealm
) {
1476 dout(7) << "fetch dirfrag for unlinked directory, mark complete" << dendl
;
1477 if (get_version() == 0) {
1478 assert(inode
->is_auth());
1481 if (state_test(STATE_REJOINUNDEF
)) {
1482 assert(cache
->mds
->is_rejoin());
1483 state_clear(STATE_REJOINUNDEF
);
1484 cache
->opened_undef_dirfrag(this);
1490 cache
->mds
->queue_waiter(c
);
1494 if (c
) add_waiter(WAIT_COMPLETE
, c
);
1495 if (!want_dn
.empty()) wanted_items
.insert(want_dn
);
1497 // already fetching?
1498 if (state_test(CDir::STATE_FETCHING
)) {
1499 dout(7) << "already fetching; waiting" << dendl
;
1504 state_set(CDir::STATE_FETCHING
);
1506 if (cache
->mds
->logger
) cache
->mds
->logger
->inc(l_mds_dir_fetch
);
1508 std::set
<dentry_key_t
> empty
;
1509 _omap_fetch(NULL
, empty
);
1512 void CDir::fetch(MDSInternalContextBase
*c
, const std::set
<dentry_key_t
>& keys
)
1514 dout(10) << "fetch " << keys
.size() << " keys on " << *this << dendl
;
1517 assert(!is_complete());
1519 if (!can_auth_pin()) {
1520 dout(7) << "fetch keys waiting for authpinnable" << dendl
;
1521 add_waiter(WAIT_UNFREEZE
, c
);
1524 if (state_test(CDir::STATE_FETCHING
)) {
1525 dout(7) << "fetch keys waiting for full fetch" << dendl
;
1526 add_waiter(WAIT_COMPLETE
, c
);
1531 if (cache
->mds
->logger
) cache
->mds
->logger
->inc(l_mds_dir_fetch
);
1533 _omap_fetch(c
, keys
);
1536 class C_IO_Dir_OMAP_FetchedMore
: public CDirIOContext
{
1537 MDSInternalContextBase
*fin
;
1541 map
<string
, bufferlist
> omap
; ///< carry-over from before
1542 map
<string
, bufferlist
> omap_more
; ///< new batch
1544 C_IO_Dir_OMAP_FetchedMore(CDir
*d
, MDSInternalContextBase
*f
) :
1545 CDirIOContext(d
), fin(f
), ret(0) { }
1546 void finish(int r
) {
1549 omap
.swap(omap_more
);
1551 omap
.insert(omap_more
.begin(), omap_more
.end());
1554 dir
->_omap_fetch_more(hdrbl
, omap
, fin
);
1556 dir
->_omap_fetched(hdrbl
, omap
, !fin
, r
);
1563 class C_IO_Dir_OMAP_Fetched
: public CDirIOContext
{
1564 MDSInternalContextBase
*fin
;
1568 map
<string
, bufferlist
> omap
;
1570 int ret1
, ret2
, ret3
;
1572 C_IO_Dir_OMAP_Fetched(CDir
*d
, MDSInternalContextBase
*f
) :
1573 CDirIOContext(d
), fin(f
), ret1(0), ret2(0), ret3(0) { }
1574 void finish(int r
) override
{
1575 // check the correctness of backtrace
1576 if (r
>= 0 && ret3
!= -ECANCELED
)
1577 dir
->inode
->verify_diri_backtrace(btbl
, ret3
);
1578 if (r
>= 0) r
= ret1
;
1579 if (r
>= 0) r
= ret2
;
1581 dir
->_omap_fetch_more(hdrbl
, omap
, fin
);
1583 dir
->_omap_fetched(hdrbl
, omap
, !fin
, r
);
1590 void CDir::_omap_fetch(MDSInternalContextBase
*c
, const std::set
<dentry_key_t
>& keys
)
1592 C_IO_Dir_OMAP_Fetched
*fin
= new C_IO_Dir_OMAP_Fetched(this, c
);
1593 object_t oid
= get_ondisk_object();
1594 object_locator_t
oloc(cache
->mds
->mdsmap
->get_metadata_pool());
1596 rd
.omap_get_header(&fin
->hdrbl
, &fin
->ret1
);
1599 rd
.omap_get_vals("", "", g_conf
->mds_dir_keys_per_op
,
1600 &fin
->omap
, &fin
->more
, &fin
->ret2
);
1603 std::set
<std::string
> str_keys
;
1604 for (auto p
= keys
.begin(); p
!= keys
.end(); ++p
) {
1607 str_keys
.insert(str
);
1609 rd
.omap_get_vals_by_keys(str_keys
, &fin
->omap
, &fin
->ret2
);
1611 // check the correctness of backtrace
1612 if (g_conf
->mds_verify_backtrace
> 0 && frag
== frag_t()) {
1613 rd
.getxattr("parent", &fin
->btbl
, &fin
->ret3
);
1614 rd
.set_last_op_flags(CEPH_OSD_OP_FLAG_FAILOK
);
1616 fin
->ret3
= -ECANCELED
;
1619 cache
->mds
->objecter
->read(oid
, oloc
, rd
, CEPH_NOSNAP
, NULL
, 0,
1620 new C_OnFinisher(fin
, cache
->mds
->finisher
));
1623 void CDir::_omap_fetch_more(
1625 map
<string
, bufferlist
>& omap
,
1626 MDSInternalContextBase
*c
)
1628 // we have more omap keys to fetch!
1629 object_t oid
= get_ondisk_object();
1630 object_locator_t
oloc(cache
->mds
->mdsmap
->get_metadata_pool());
1631 C_IO_Dir_OMAP_FetchedMore
*fin
= new C_IO_Dir_OMAP_FetchedMore(this, c
);
1632 fin
->hdrbl
.claim(hdrbl
);
1633 fin
->omap
.swap(omap
);
1635 rd
.omap_get_vals(fin
->omap
.rbegin()->first
,
1636 "", /* filter prefix */
1637 g_conf
->mds_dir_keys_per_op
,
1641 cache
->mds
->objecter
->read(oid
, oloc
, rd
, CEPH_NOSNAP
, NULL
, 0,
1642 new C_OnFinisher(fin
, cache
->mds
->finisher
));
1645 CDentry
*CDir::_load_dentry(
1646 const std::string
&key
,
1647 const std::string
&dname
,
1648 const snapid_t last
,
1651 const std::set
<snapid_t
> *snaps
,
1653 list
<CInode
*> *undef_inodes
)
1655 bufferlist::iterator q
= bl
.begin();
1664 dout(20) << "_fetched pos " << pos
<< " marker '" << type
<< "' dname '" << dname
1665 << " [" << first
<< "," << last
<< "]"
1669 if (snaps
&& last
!= CEPH_NOSNAP
) {
1670 set
<snapid_t
>::const_iterator p
= snaps
->lower_bound(first
);
1671 if (p
== snaps
->end() || *p
> last
) {
1672 dout(10) << " skipping stale dentry on [" << first
<< "," << last
<< "]" << dendl
;
1678 * look for existing dentry for _last_ snap, because unlink +
1679 * create may leave a "hole" (epochs during which the dentry
1680 * doesn't exist) but for which no explicit negative dentry is in
1685 dn
= lookup_exact_snap(dname
, last
);
1687 dn
= lookup(dname
, last
);
1692 unsigned char d_type
;
1694 ::decode(d_type
, q
);
1698 stale_items
.insert(key
);
1699 *force_dirty
= true;
1705 if (dn
->get_linkage()->get_inode() == 0) {
1706 dout(12) << "_fetched had NEG dentry " << *dn
<< dendl
;
1708 dout(12) << "_fetched had dentry " << *dn
<< dendl
;
1712 dn
= add_remote_dentry(dname
, ino
, d_type
, first
, last
);
1715 CInode
*in
= cache
->get_inode(ino
); // we may or may not have it.
1717 dn
->link_remote(dn
->get_linkage(), in
);
1718 dout(12) << "_fetched got remote link " << ino
<< " which we have " << *in
<< dendl
;
1720 dout(12) << "_fetched got remote link " << ino
<< " (dont' have it)" << dendl
;
1724 else if (type
== 'I') {
1727 // Load inode data before looking up or constructing CInode
1728 InodeStore inode_data
;
1729 inode_data
.decode_bare(q
);
1733 stale_items
.insert(key
);
1734 *force_dirty
= true;
1739 bool undef_inode
= false;
1741 CInode
*in
= dn
->get_linkage()->get_inode();
1743 dout(12) << "_fetched had dentry " << *dn
<< dendl
;
1744 if (in
->state_test(CInode::STATE_REJOINUNDEF
)) {
1745 undef_inodes
->push_back(in
);
1749 dout(12) << "_fetched had NEG dentry " << *dn
<< dendl
;
1752 if (!dn
|| undef_inode
) {
1754 CInode
*in
= cache
->get_inode(inode_data
.inode
.ino
, last
);
1755 if (!in
|| undef_inode
) {
1756 if (undef_inode
&& in
)
1759 in
= new CInode(cache
, true, first
, last
);
1761 in
->inode
= inode_data
.inode
;
1763 if (in
->is_symlink())
1764 in
->symlink
= inode_data
.symlink
;
1766 in
->dirfragtree
.swap(inode_data
.dirfragtree
);
1767 in
->xattrs
.swap(inode_data
.xattrs
);
1768 in
->old_inodes
.swap(inode_data
.old_inodes
);
1769 if (!in
->old_inodes
.empty()) {
1770 snapid_t min_first
= in
->old_inodes
.rbegin()->first
+ 1;
1771 if (min_first
> in
->first
)
1772 in
->first
= min_first
;
1775 in
->oldest_snap
= inode_data
.oldest_snap
;
1776 in
->decode_snap_blob(inode_data
.snap_blob
);
1777 if (snaps
&& !in
->snaprealm
)
1778 in
->purge_stale_snap_data(*snaps
);
1781 cache
->add_inode(in
); // add
1782 dn
= add_primary_dentry(dname
, in
, first
, last
); // link
1784 dout(12) << "_fetched got " << *dn
<< " " << *in
<< dendl
;
1786 if (in
->inode
.is_dirty_rstat())
1787 in
->mark_dirty_rstat();
1789 //in->hack_accessed = false;
1790 //in->hack_load_stamp = ceph_clock_now();
1791 //num_new_inodes_loaded++;
1793 dout(0) << "_fetched badness: got (but i already had) " << *in
1794 << " mode " << in
->inode
.mode
1795 << " mtime " << in
->inode
.mtime
<< dendl
;
1796 string dirpath
, inopath
;
1797 this->inode
->make_path_string(dirpath
);
1798 in
->make_path_string(inopath
);
1799 cache
->mds
->clog
->error() << "loaded dup inode " << inode_data
.inode
.ino
1800 << " [" << first
<< "," << last
<< "] v" << inode_data
.inode
.version
1801 << " at " << dirpath
<< "/" << dname
1802 << ", but inode " << in
->vino() << " v" << in
->inode
.version
1803 << " already exists at " << inopath
;
1808 std::ostringstream oss
;
1809 oss
<< "Invalid tag char '" << type
<< "' pos " << pos
;
1810 throw buffer::malformed_input(oss
.str());
1816 void CDir::_omap_fetched(bufferlist
& hdrbl
, map
<string
, bufferlist
>& omap
,
1817 bool complete
, int r
)
1819 LogChannelRef clog
= cache
->mds
->clog
;
1820 dout(10) << "_fetched header " << hdrbl
.length() << " bytes "
1821 << omap
.size() << " keys for " << *this << dendl
;
1823 assert(r
== 0 || r
== -ENOENT
|| r
== -ENODATA
);
1825 assert(!is_frozen());
1827 if (hdrbl
.length() == 0) {
1828 dout(0) << "_fetched missing object for " << *this << dendl
;
1830 clog
->error() << "dir " << dirfrag() << " object missing on disk; some "
1831 "files may be lost (" << get_path() << ")";
1839 bufferlist::iterator p
= hdrbl
.begin();
1841 ::decode(got_fnode
, p
);
1842 } catch (const buffer::error
&err
) {
1843 derr
<< "Corrupt fnode in dirfrag " << dirfrag()
1844 << ": " << err
<< dendl
;
1845 clog
->warn() << "Corrupt fnode header in " << dirfrag() << ": "
1846 << err
<< " (" << get_path() << ")";
1851 clog
->warn() << "header buffer of dir " << dirfrag() << " has "
1852 << hdrbl
.length() - p
.get_off() << " extra bytes ("
1853 << get_path() << ")";
1859 dout(10) << "_fetched version " << got_fnode
.version
<< dendl
;
1861 // take the loaded fnode?
1862 // only if we are a fresh CDir* with no prior state.
1863 if (get_version() == 0) {
1864 assert(!is_projected());
1865 assert(!state_test(STATE_COMMITTING
));
1867 projected_version
= committing_version
= committed_version
= got_fnode
.version
;
1869 if (state_test(STATE_REJOINUNDEF
)) {
1870 assert(cache
->mds
->is_rejoin());
1871 state_clear(STATE_REJOINUNDEF
);
1872 cache
->opened_undef_dirfrag(this);
1876 list
<CInode
*> undef_inodes
;
1878 // purge stale snaps?
1879 // only if we have past_parents open!
1880 bool force_dirty
= false;
1881 const set
<snapid_t
> *snaps
= NULL
;
1882 SnapRealm
*realm
= inode
->find_snaprealm();
1883 if (!realm
->have_past_parents_open()) {
1884 dout(10) << " no snap purge, one or more past parents NOT open" << dendl
;
1885 } else if (fnode
.snap_purged_thru
< realm
->get_last_destroyed()) {
1886 snaps
= &realm
->get_snaps();
1887 dout(10) << " snap_purged_thru " << fnode
.snap_purged_thru
1888 << " < " << realm
->get_last_destroyed()
1889 << ", snap purge based on " << *snaps
<< dendl
;
1890 if (get_num_snap_items() == 0) {
1891 fnode
.snap_purged_thru
= realm
->get_last_destroyed();
1896 unsigned pos
= omap
.size() - 1;
1897 for (map
<string
, bufferlist
>::reverse_iterator p
= omap
.rbegin();
1902 dentry_key_t::decode_helper(p
->first
, dname
, last
);
1907 p
->first
, dname
, last
, p
->second
, pos
, snaps
,
1908 &force_dirty
, &undef_inodes
);
1909 } catch (const buffer::error
&err
) {
1910 cache
->mds
->clog
->warn() << "Corrupt dentry '" << dname
<< "' in "
1911 "dir frag " << dirfrag() << ": "
1912 << err
<< "(" << get_path() << ")";
1914 // Remember that this dentry is damaged. Subsequent operations
1915 // that try to act directly on it will get their EIOs, but this
1916 // dirfrag as a whole will continue to look okay (minus the
1917 // mysteriously-missing dentry)
1918 go_bad_dentry(last
, dname
);
1920 // Anyone who was WAIT_DENTRY for this guy will get kicked
1921 // to RetryRequest, and hit the DamageTable-interrogating path.
1922 // Stats will now be bogus because we will think we're complete,
1923 // but have 1 or more missing dentries.
1927 if (dn
&& (wanted_items
.count(dname
) > 0 || !complete
)) {
1928 dout(10) << " touching wanted dn " << *dn
<< dendl
;
1929 inode
->mdcache
->touch_dentry(dn
);
1932 /** clean underwater item?
1933 * Underwater item is something that is dirty in our cache from
1934 * journal replay, but was previously flushed to disk before the
1937 * We only do this is committed_version == 0. that implies either
1938 * - this is a fetch after from a clean/empty CDir is created
1939 * (and has no effect, since the dn won't exist); or
1940 * - this is a fetch after _recovery_, which is what we're worried
1941 * about. Items that are marked dirty from the journal should be
1942 * marked clean if they appear on disk.
1944 if (committed_version
== 0 &&
1946 dn
->get_version() <= got_fnode
.version
&&
1948 dout(10) << "_fetched had underwater dentry " << *dn
<< ", marking clean" << dendl
;
1951 if (dn
->get_linkage()->is_primary()) {
1952 assert(dn
->get_linkage()->get_inode()->get_version() <= got_fnode
.version
);
1953 dout(10) << "_fetched had underwater inode " << *dn
->get_linkage()->get_inode() << ", marking clean" << dendl
;
1954 dn
->get_linkage()->get_inode()->mark_clean();
1959 //cache->mds->logger->inc("newin", num_new_inodes_loaded);
1961 // mark complete, !fetching
1963 wanted_items
.clear();
1965 state_clear(STATE_FETCHING
);
1967 if (scrub_infop
&& scrub_infop
->need_scrub_local
) {
1968 scrub_infop
->need_scrub_local
= false;
1973 // open & force frags
1974 while (!undef_inodes
.empty()) {
1975 CInode
*in
= undef_inodes
.front();
1976 undef_inodes
.pop_front();
1977 in
->state_clear(CInode::STATE_REJOINUNDEF
);
1978 cache
->opened_undef_inode(in
);
1981 // dirty myself to remove stale snap dentries
1982 if (force_dirty
&& !inode
->mdcache
->is_readonly())
1989 finish_waiting(WAIT_COMPLETE
, 0);
1993 void CDir::_go_bad()
1995 if (get_version() == 0)
1997 state_set(STATE_BADFRAG
);
1998 // mark complete, !fetching
2000 state_clear(STATE_FETCHING
);
2004 finish_waiting(WAIT_COMPLETE
, -EIO
);
2007 void CDir::go_bad_dentry(snapid_t last
, const std::string
&dname
)
2009 dout(10) << "go_bad_dentry " << dname
<< dendl
;
2010 const bool fatal
= cache
->mds
->damage_table
.notify_dentry(
2011 inode
->ino(), frag
, last
, dname
, get_path() + "/" + dname
);
2013 cache
->mds
->damaged();
2014 ceph_abort(); // unreachable, damaged() respawns us
2018 void CDir::go_bad(bool complete
)
2020 dout(10) << "go_bad " << frag
<< dendl
;
2021 const bool fatal
= cache
->mds
->damage_table
.notify_dirfrag(
2022 inode
->ino(), frag
, get_path());
2024 cache
->mds
->damaged();
2025 ceph_abort(); // unreachable, damaged() respawns us
2034 // -----------------------
2040 * @param want - min version i want committed
2041 * @param c - callback for completion
2043 void CDir::commit(version_t want
, MDSInternalContextBase
*c
, bool ignore_authpinnability
, int op_prio
)
2045 dout(10) << "commit want " << want
<< " on " << *this << dendl
;
2046 if (want
== 0) want
= get_version();
2049 assert(want
<= get_version() || get_version() == 0); // can't commit the future
2050 assert(want
> committed_version
); // the caller is stupid
2052 assert(ignore_authpinnability
|| can_auth_pin());
2054 // note: queue up a noop if necessary, so that we always
2057 c
= new C_MDSInternalNoop
;
2059 // auth_pin on first waiter
2060 if (waiting_for_commit
.empty())
2062 waiting_for_commit
[want
].push_back(c
);
2065 _commit(want
, op_prio
);
2068 class C_IO_Dir_Committed
: public CDirIOContext
{
2071 C_IO_Dir_Committed(CDir
*d
, version_t v
) : CDirIOContext(d
), version(v
) { }
2072 void finish(int r
) override
{
2073 dir
->_committed(r
, version
);
2078 * Flush out the modified dentries in this dir. Keep the bufferlist
2079 * below max_write_size;
2081 void CDir::_omap_commit(int op_prio
)
2083 dout(10) << "_omap_commit" << dendl
;
2085 unsigned max_write_size
= cache
->max_dir_commit_size
;
2086 unsigned write_size
= 0;
2089 op_prio
= CEPH_MSG_PRIO_DEFAULT
;
2092 const set
<snapid_t
> *snaps
= NULL
;
2093 SnapRealm
*realm
= inode
->find_snaprealm();
2094 if (!realm
->have_past_parents_open()) {
2095 dout(10) << " no snap purge, one or more past parents NOT open" << dendl
;
2096 } else if (fnode
.snap_purged_thru
< realm
->get_last_destroyed()) {
2097 snaps
= &realm
->get_snaps();
2098 dout(10) << " snap_purged_thru " << fnode
.snap_purged_thru
2099 << " < " << realm
->get_last_destroyed()
2100 << ", snap purge based on " << *snaps
<< dendl
;
2101 // fnode.snap_purged_thru = realm->get_last_destroyed();
2104 set
<string
> to_remove
;
2105 map
<string
, bufferlist
> to_set
;
2107 C_GatherBuilder
gather(g_ceph_context
,
2108 new C_OnFinisher(new C_IO_Dir_Committed(this,
2110 cache
->mds
->finisher
));
2113 object_t oid
= get_ondisk_object();
2114 object_locator_t
oloc(cache
->mds
->mdsmap
->get_metadata_pool());
2116 if (!stale_items
.empty()) {
2117 for (compact_set
<string
>::iterator p
= stale_items
.begin();
2118 p
!= stale_items
.end();
2120 to_remove
.insert(*p
);
2121 write_size
+= (*p
).length();
2123 stale_items
.clear();
2126 for (map_t::iterator p
= items
.begin();
2127 p
!= items
.end(); ) {
2128 CDentry
*dn
= p
->second
;
2132 dn
->key().encode(key
);
2134 if (dn
->last
!= CEPH_NOSNAP
&&
2135 snaps
&& try_trim_snap_dentry(dn
, *snaps
)) {
2136 dout(10) << " rm " << key
<< dendl
;
2137 write_size
+= key
.length();
2138 to_remove
.insert(key
);
2142 if (!dn
->is_dirty() &&
2143 (!dn
->state_test(CDentry::STATE_FRAGMENTING
) || dn
->get_linkage()->is_null()))
2144 continue; // skip clean dentries
2146 if (dn
->get_linkage()->is_null()) {
2147 dout(10) << " rm " << dn
->name
<< " " << *dn
<< dendl
;
2148 write_size
+= key
.length();
2149 to_remove
.insert(key
);
2151 dout(10) << " set " << dn
->name
<< " " << *dn
<< dendl
;
2153 _encode_dentry(dn
, dnbl
, snaps
);
2154 write_size
+= key
.length() + dnbl
.length();
2155 to_set
[key
].swap(dnbl
);
2158 if (write_size
>= max_write_size
) {
2160 op
.priority
= op_prio
;
2162 // don't create new dirfrag blindly
2163 if (!is_new() && !state_test(CDir::STATE_FRAGMENTING
))
2164 op
.stat(NULL
, (ceph::real_time
*) NULL
, NULL
);
2166 if (!to_set
.empty())
2167 op
.omap_set(to_set
);
2168 if (!to_remove
.empty())
2169 op
.omap_rm_keys(to_remove
);
2171 cache
->mds
->objecter
->mutate(oid
, oloc
, op
, snapc
,
2172 ceph::real_clock::now(),
2173 0, gather
.new_sub());
2182 op
.priority
= op_prio
;
2184 // don't create new dirfrag blindly
2185 if (!is_new() && !state_test(CDir::STATE_FRAGMENTING
))
2186 op
.stat(NULL
, (ceph::real_time
*)NULL
, NULL
);
2189 * save the header at the last moment.. If we were to send it off before other
2190 * updates, but die before sending them all, we'd think that the on-disk state
2191 * was fully committed even though it wasn't! However, since the messages are
2192 * strictly ordered between the MDS and the OSD, and since messages to a given
2193 * PG are strictly ordered, if we simply send the message containing the header
2194 * off last, we cannot get our header into an incorrect state.
2197 ::encode(fnode
, header
);
2198 op
.omap_set_header(header
);
2200 if (!to_set
.empty())
2201 op
.omap_set(to_set
);
2202 if (!to_remove
.empty())
2203 op
.omap_rm_keys(to_remove
);
2205 cache
->mds
->objecter
->mutate(oid
, oloc
, op
, snapc
,
2206 ceph::real_clock::now(),
2207 0, gather
.new_sub());
2212 void CDir::_encode_dentry(CDentry
*dn
, bufferlist
& bl
,
2213 const set
<snapid_t
> *snaps
)
2215 // clear dentry NEW flag, if any. we can no longer silently drop it.
2218 ::encode(dn
->first
, bl
);
2220 // primary or remote?
2221 if (dn
->linkage
.is_remote()) {
2222 inodeno_t ino
= dn
->linkage
.get_remote_ino();
2223 unsigned char d_type
= dn
->linkage
.get_remote_d_type();
2224 dout(14) << " pos " << bl
.length() << " dn '" << dn
->name
<< "' remote ino " << ino
<< dendl
;
2226 // marker, name, ino
2227 bl
.append('L'); // remote link
2229 ::encode(d_type
, bl
);
2230 } else if (dn
->linkage
.is_primary()) {
2232 CInode
*in
= dn
->linkage
.get_inode();
2235 dout(14) << " pos " << bl
.length() << " dn '" << dn
->name
<< "' inode " << *in
<< dendl
;
2237 // marker, name, inode, [symlink string]
2238 bl
.append('I'); // inode
2240 if (in
->is_multiversion()) {
2241 if (!in
->snaprealm
) {
2243 in
->purge_stale_snap_data(*snaps
);
2244 } else if (in
->snaprealm
->have_past_parents_open()) {
2245 in
->purge_stale_snap_data(in
->snaprealm
->get_snaps());
2249 bufferlist snap_blob
;
2250 in
->encode_snap_blob(snap_blob
);
2251 in
->encode_bare(bl
, cache
->mds
->mdsmap
->get_up_features(), &snap_blob
);
2253 assert(!dn
->linkage
.is_null());
2257 void CDir::_commit(version_t want
, int op_prio
)
2259 dout(10) << "_commit want " << want
<< " on " << *this << dendl
;
2261 // we can't commit things in the future.
2262 // (even the projected future.)
2263 assert(want
<= get_version() || get_version() == 0);
2265 // check pre+postconditions.
2268 // already committed?
2269 if (committed_version
>= want
) {
2270 dout(10) << "already committed " << committed_version
<< " >= " << want
<< dendl
;
2273 // already committing >= want?
2274 if (committing_version
>= want
) {
2275 dout(10) << "already committing " << committing_version
<< " >= " << want
<< dendl
;
2276 assert(state_test(STATE_COMMITTING
));
2280 // alrady committed an older version?
2281 if (committing_version
> committed_version
) {
2282 dout(10) << "already committing older " << committing_version
<< ", waiting for that to finish" << dendl
;
2287 committing_version
= get_version();
2289 // mark committing (if not already)
2290 if (!state_test(STATE_COMMITTING
)) {
2291 dout(10) << "marking committing" << dendl
;
2292 state_set(STATE_COMMITTING
);
2295 if (cache
->mds
->logger
) cache
->mds
->logger
->inc(l_mds_dir_commit
);
2297 _omap_commit(op_prio
);
2304 * @param v version i just committed
2306 void CDir::_committed(int r
, version_t v
)
2309 // the directory could be partly purged during MDS failover
2310 if (r
== -ENOENT
&& committed_version
== 0 &&
2311 !inode
->is_base() && get_parent_dir()->inode
->is_stray()) {
2313 if (inode
->snaprealm
)
2314 inode
->state_set(CInode::STATE_MISSINGOBJS
);
2317 dout(1) << "commit error " << r
<< " v " << v
<< dendl
;
2318 cache
->mds
->clog
->error() << "failed to commit dir " << dirfrag() << " object,"
2320 cache
->mds
->handle_write_error(r
);
2325 dout(10) << "_committed v " << v
<< " on " << *this << dendl
;
2328 bool stray
= inode
->is_stray();
2331 assert(v
> committed_version
);
2332 assert(v
<= committing_version
);
2333 committed_version
= v
;
2335 // _all_ commits done?
2336 if (committing_version
== committed_version
)
2337 state_clear(CDir::STATE_COMMITTING
);
2339 // _any_ commit, even if we've been redirtied, means we're no longer new.
2340 item_new
.remove_myself();
2343 if (committed_version
== get_version())
2347 for (map_t::iterator it
= items
.begin();
2348 it
!= items
.end(); ) {
2349 CDentry
*dn
= it
->second
;
2353 if (dn
->linkage
.is_primary()) {
2354 CInode
*in
= dn
->linkage
.get_inode();
2356 assert(in
->is_auth());
2358 if (committed_version
>= in
->get_version()) {
2359 if (in
->is_dirty()) {
2360 dout(15) << " dir " << committed_version
<< " >= inode " << in
->get_version() << " now clean " << *in
<< dendl
;
2364 dout(15) << " dir " << committed_version
<< " < inode " << in
->get_version() << " still dirty " << *in
<< dendl
;
2365 assert(in
->is_dirty() || in
->last
< CEPH_NOSNAP
); // special case for cow snap items (not predirtied)
2370 if (committed_version
>= dn
->get_version()) {
2371 if (dn
->is_dirty()) {
2372 dout(15) << " dir " << committed_version
<< " >= dn " << dn
->get_version() << " now clean " << *dn
<< dendl
;
2375 // drop clean null stray dentries immediately
2377 dn
->get_num_ref() == 0 &&
2378 !dn
->is_projected() &&
2379 dn
->get_linkage()->is_null())
2383 dout(15) << " dir " << committed_version
<< " < dn " << dn
->get_version() << " still dirty " << *dn
<< dendl
;
2388 bool were_waiters
= !waiting_for_commit
.empty();
2390 compact_map
<version_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_for_commit
.begin();
2391 while (p
!= waiting_for_commit
.end()) {
2392 compact_map
<version_t
, list
<MDSInternalContextBase
*> >::iterator n
= p
;
2394 if (p
->first
> committed_version
) {
2395 dout(10) << " there are waiters for " << p
->first
<< ", committing again" << dendl
;
2396 _commit(p
->first
, -1);
2399 cache
->mds
->queue_waiters(p
->second
);
2400 waiting_for_commit
.erase(p
);
2404 // try drop dentries in this dirfrag if it's about to be purged
2405 if (!inode
->is_base() && get_parent_dir()->inode
->is_stray() &&
2407 cache
->maybe_eval_stray(inode
, true);
2409 // unpin if we kicked the last waiter.
2411 waiting_for_commit
.empty())
2420 void CDir::encode_export(bufferlist
& bl
)
2422 assert(!is_projected());
2423 ::encode(first
, bl
);
2424 ::encode(fnode
, bl
);
2425 ::encode(dirty_old_rstat
, bl
);
2426 ::encode(committed_version
, bl
);
2428 ::encode(state
, bl
);
2429 ::encode(dir_rep
, bl
);
2431 ::encode(pop_me
, bl
);
2432 ::encode(pop_auth_subtree
, bl
);
2434 ::encode(dir_rep_by
, bl
);
2435 ::encode(replica_map
, bl
);
2437 get(PIN_TEMPEXPORTING
);
2440 void CDir::finish_export(utime_t now
)
2442 state
&= MASK_STATE_EXPORT_KEPT
;
2443 pop_auth_subtree_nested
.sub(now
, cache
->decayrate
, pop_auth_subtree
);
2445 pop_auth_subtree
.zero(now
);
2446 put(PIN_TEMPEXPORTING
);
2447 dirty_old_rstat
.clear();
2450 void CDir::decode_import(bufferlist::iterator
& blp
, utime_t now
, LogSegment
*ls
)
2452 ::decode(first
, blp
);
2453 ::decode(fnode
, blp
);
2454 ::decode(dirty_old_rstat
, blp
);
2455 projected_version
= fnode
.version
;
2456 ::decode(committed_version
, blp
);
2457 committing_version
= committed_version
;
2461 state
&= MASK_STATE_IMPORT_KEPT
;
2462 state_set(STATE_AUTH
| (s
& MASK_STATE_EXPORTED
));
2469 ::decode(dir_rep
, blp
);
2471 ::decode(pop_me
, now
, blp
);
2472 ::decode(pop_auth_subtree
, now
, blp
);
2473 pop_auth_subtree_nested
.add(now
, cache
->decayrate
, pop_auth_subtree
);
2475 ::decode(dir_rep_by
, blp
);
2476 ::decode(replica_map
, blp
);
2477 if (!replica_map
.empty()) get(PIN_REPLICATED
);
2479 replica_nonce
= 0; // no longer defined
2481 // did we import some dirty scatterlock data?
2482 if (dirty_old_rstat
.size() ||
2483 !(fnode
.rstat
== fnode
.accounted_rstat
)) {
2484 cache
->mds
->locker
->mark_updated_scatterlock(&inode
->nestlock
);
2485 ls
->dirty_dirfrag_nest
.push_back(&inode
->item_dirty_dirfrag_nest
);
2487 if (!(fnode
.fragstat
== fnode
.accounted_fragstat
)) {
2488 cache
->mds
->locker
->mark_updated_scatterlock(&inode
->filelock
);
2489 ls
->dirty_dirfrag_dir
.push_back(&inode
->item_dirty_dirfrag_dir
);
2491 if (is_dirty_dft()) {
2492 if (inode
->dirfragtreelock
.get_state() != LOCK_MIX
&&
2493 inode
->dirfragtreelock
.is_stable()) {
2494 // clear stale dirtydft
2495 state_clear(STATE_DIRTYDFT
);
2497 cache
->mds
->locker
->mark_updated_scatterlock(&inode
->dirfragtreelock
);
2498 ls
->dirty_dirfrag_dirfragtree
.push_back(&inode
->item_dirty_dirfrag_dirfragtree
);
2506 /********************************
2511 * if dir_auth.first == parent, auth is same as inode.
2512 * unless .second != unknown, in which case that sticks.
2514 mds_authority_t
CDir::authority() const
2516 if (is_subtree_root())
2519 return inode
->authority();
2522 /** is_subtree_root()
2523 * true if this is an auth delegation point.
2524 * that is, dir_auth != default (parent,unknown)
2526 * some key observations:
2528 * - any region bound will be an export, or frozen.
2530 * note that this DOES heed dir_auth.pending
2533 bool CDir::is_subtree_root()
2535 if (dir_auth == CDIR_AUTH_DEFAULT) {
2536 //dout(10) << "is_subtree_root false " << dir_auth << " != " << CDIR_AUTH_DEFAULT
2537 //<< " on " << ino() << dendl;
2540 //dout(10) << "is_subtree_root true " << dir_auth << " != " << CDIR_AUTH_DEFAULT
2541 //<< " on " << ino() << dendl;
2548 * true if we are x, or an ancestor of x
2550 bool CDir::contains(CDir
*x
)
2555 x
= x
->get_inode()->get_projected_parent_dir();
2565 void CDir::set_dir_auth(mds_authority_t a
)
2567 dout(10) << "setting dir_auth=" << a
2568 << " from " << dir_auth
2569 << " on " << *this << dendl
;
2571 bool was_subtree
= is_subtree_root();
2572 bool was_ambiguous
= dir_auth
.second
>= 0;
2577 // new subtree root?
2578 if (!was_subtree
&& is_subtree_root()) {
2579 dout(10) << " new subtree root, adjusting auth_pins" << dendl
;
2581 // adjust nested auth pins
2582 if (get_cum_auth_pins())
2583 inode
->adjust_nested_auth_pins(-1, NULL
);
2585 // unpin parent of frozen dir/tree?
2586 if (inode
->is_auth() && (is_frozen_tree_root() || is_frozen_dir()))
2587 inode
->auth_unpin(this);
2589 if (was_subtree
&& !is_subtree_root()) {
2590 dout(10) << " old subtree root, adjusting auth_pins" << dendl
;
2592 // adjust nested auth pins
2593 if (get_cum_auth_pins())
2594 inode
->adjust_nested_auth_pins(1, NULL
);
2596 // pin parent of frozen dir/tree?
2597 if (inode
->is_auth() && (is_frozen_tree_root() || is_frozen_dir()))
2598 inode
->auth_pin(this);
2601 // newly single auth?
2602 if (was_ambiguous
&& dir_auth
.second
== CDIR_AUTH_UNKNOWN
) {
2603 list
<MDSInternalContextBase
*> ls
;
2604 take_waiting(WAIT_SINGLEAUTH
, ls
);
2605 cache
->mds
->queue_waiters(ls
);
2610 /*****************************************
2611 * AUTH PINS and FREEZING
2613 * the basic plan is that auth_pins only exist in auth regions, and they
2614 * prevent a freeze (and subsequent auth change).
2616 * however, we also need to prevent a parent from freezing if a child is frozen.
2617 * for that reason, the parent inode of a frozen directory is auth_pinned.
2619 * the oddity is when the frozen directory is a subtree root. if that's the case,
2620 * the parent inode isn't frozen. which means that when subtree authority is adjusted
2621 * at the bounds, inodes for any frozen bound directories need to get auth_pins at that
2626 void CDir::auth_pin(void *by
)
2632 #ifdef MDS_AUTHPIN_SET
2633 auth_pin_set
.insert(by
);
2636 dout(10) << "auth_pin by " << by
2638 << " count now " << auth_pins
<< " + " << nested_auth_pins
<< dendl
;
2641 if (!is_subtree_root() &&
2642 get_cum_auth_pins() == 1)
2643 inode
->adjust_nested_auth_pins(1, by
);
2646 void CDir::auth_unpin(void *by
)
2650 #ifdef MDS_AUTHPIN_SET
2651 assert(auth_pin_set
.count(by
));
2652 auth_pin_set
.erase(auth_pin_set
.find(by
));
2657 dout(10) << "auth_unpin by " << by
2659 << " count now " << auth_pins
<< " + " << nested_auth_pins
<< dendl
;
2660 assert(auth_pins
>= 0);
2662 int newcum
= get_cum_auth_pins();
2664 maybe_finish_freeze(); // pending freeze?
2667 if (!is_subtree_root() &&
2669 inode
->adjust_nested_auth_pins(-1, by
);
2672 void CDir::adjust_nested_auth_pins(int inc
, int dirinc
, void *by
)
2675 nested_auth_pins
+= inc
;
2676 dir_auth_pins
+= dirinc
;
2678 dout(15) << "adjust_nested_auth_pins " << inc
<< "/" << dirinc
<< " on " << *this
2679 << " by " << by
<< " count now "
2680 << auth_pins
<< " + " << nested_auth_pins
<< dendl
;
2681 assert(nested_auth_pins
>= 0);
2682 assert(dir_auth_pins
>= 0);
2684 int newcum
= get_cum_auth_pins();
2686 maybe_finish_freeze(); // pending freeze?
2689 if (!is_subtree_root()) {
2691 inode
->adjust_nested_auth_pins(-1, by
);
2692 else if (newcum
== inc
)
2693 inode
->adjust_nested_auth_pins(1, by
);
2697 #ifdef MDS_VERIFY_FRAGSTAT
2698 void CDir::verify_fragstat()
2700 assert(is_complete());
2701 if (inode
->is_stray())
2705 memset(&c
, 0, sizeof(c
));
2707 for (map_t::iterator it
= items
.begin();
2710 CDentry
*dn
= it
->second
;
2714 dout(10) << " " << *dn
<< dendl
;
2715 if (dn
->is_primary())
2716 dout(10) << " " << *dn
->inode
<< dendl
;
2718 if (dn
->is_primary()) {
2719 if (dn
->inode
->is_dir())
2724 if (dn
->is_remote()) {
2725 if (dn
->get_remote_d_type() == DT_DIR
)
2732 if (c
.nsubdirs
!= fnode
.fragstat
.nsubdirs
||
2733 c
.nfiles
!= fnode
.fragstat
.nfiles
) {
2734 dout(0) << "verify_fragstat failed " << fnode
.fragstat
<< " on " << *this << dendl
;
2735 dout(0) << " i count " << c
<< dendl
;
2738 dout(0) << "verify_fragstat ok " << fnode
.fragstat
<< " on " << *this << dendl
;
2743 /*****************************************************************************
2749 bool CDir::freeze_tree()
2751 assert(!is_frozen());
2752 assert(!is_freezing());
2755 if (is_freezeable(true)) {
2760 state_set(STATE_FREEZINGTREE
);
2761 ++num_freezing_trees
;
2762 dout(10) << "freeze_tree waiting " << *this << dendl
;
2767 void CDir::_freeze_tree()
2769 dout(10) << "_freeze_tree " << *this << dendl
;
2770 assert(is_freezeable(true));
2773 if (state_test(STATE_FREEZINGTREE
)) {
2774 state_clear(STATE_FREEZINGTREE
); // actually, this may get set again by next context?
2775 --num_freezing_trees
;
2777 state_set(STATE_FROZENTREE
);
2781 // auth_pin inode for duration of freeze, if we are not a subtree root.
2782 if (is_auth() && !is_subtree_root())
2783 inode
->auth_pin(this);
2786 void CDir::unfreeze_tree()
2788 dout(10) << "unfreeze_tree " << *this << dendl
;
2790 if (state_test(STATE_FROZENTREE
)) {
2791 // frozen. unfreeze.
2792 state_clear(STATE_FROZENTREE
);
2797 // unpin (may => FREEZEABLE) FIXME: is this order good?
2798 if (is_auth() && !is_subtree_root())
2799 inode
->auth_unpin(this);
2802 finish_waiting(WAIT_UNFREEZE
);
2804 finish_waiting(WAIT_FROZEN
, -1);
2806 // freezing. stop it.
2807 assert(state_test(STATE_FREEZINGTREE
));
2808 state_clear(STATE_FREEZINGTREE
);
2809 --num_freezing_trees
;
2812 finish_waiting(WAIT_UNFREEZE
);
2816 bool CDir::is_freezing_tree() const
2818 if (num_freezing_trees
== 0)
2820 const CDir
*dir
= this;
2822 if (dir
->is_freezing_tree_root()) return true;
2823 if (dir
->is_subtree_root()) return false;
2824 if (dir
->inode
->parent
)
2825 dir
= dir
->inode
->parent
->dir
;
2827 return false; // root on replica
2831 bool CDir::is_frozen_tree() const
2833 if (num_frozen_trees
== 0)
2835 const CDir
*dir
= this;
2837 if (dir
->is_frozen_tree_root()) return true;
2838 if (dir
->is_subtree_root()) return false;
2839 if (dir
->inode
->parent
)
2840 dir
= dir
->inode
->parent
->dir
;
2842 return false; // root on replica
2846 CDir
*CDir::get_frozen_tree_root()
2848 assert(is_frozen());
2851 if (dir
->is_frozen_tree_root())
2853 if (dir
->inode
->parent
)
2854 dir
= dir
->inode
->parent
->dir
;
2860 class C_Dir_AuthUnpin
: public CDirContext
{
2862 explicit C_Dir_AuthUnpin(CDir
*d
) : CDirContext(d
) {}
2863 void finish(int r
) override
{
2864 dir
->auth_unpin(dir
->get_inode());
2868 void CDir::maybe_finish_freeze()
2870 if (auth_pins
!= 1 || dir_auth_pins
!= 0)
2873 // we can freeze the _dir_ even with nested pins...
2874 if (state_test(STATE_FREEZINGDIR
)) {
2877 finish_waiting(WAIT_FROZEN
);
2880 if (nested_auth_pins
!= 0)
2883 if (state_test(STATE_FREEZINGTREE
)) {
2884 if (!is_subtree_root() && inode
->is_frozen()) {
2885 dout(10) << "maybe_finish_freeze !subtree root and frozen inode, waiting for unfreeze on " << inode
<< dendl
;
2886 // retake an auth_pin...
2888 // and release it when the parent inode unfreezes
2889 inode
->add_waiter(WAIT_UNFREEZE
, new C_Dir_AuthUnpin(this));
2895 finish_waiting(WAIT_FROZEN
);
2903 bool CDir::freeze_dir()
2905 assert(!is_frozen());
2906 assert(!is_freezing());
2909 if (is_freezeable_dir(true)) {
2914 state_set(STATE_FREEZINGDIR
);
2915 dout(10) << "freeze_dir + wait " << *this << dendl
;
2920 void CDir::_freeze_dir()
2922 dout(10) << "_freeze_dir " << *this << dendl
;
2923 //assert(is_freezeable_dir(true));
2924 // not always true during split because the original fragment may have frozen a while
2925 // ago and we're just now getting around to breaking it up.
2927 state_clear(STATE_FREEZINGDIR
);
2928 state_set(STATE_FROZENDIR
);
2931 if (is_auth() && !is_subtree_root())
2932 inode
->auth_pin(this); // auth_pin for duration of freeze
2936 void CDir::unfreeze_dir()
2938 dout(10) << "unfreeze_dir " << *this << dendl
;
2940 if (state_test(STATE_FROZENDIR
)) {
2941 state_clear(STATE_FROZENDIR
);
2944 // unpin (may => FREEZEABLE) FIXME: is this order good?
2945 if (is_auth() && !is_subtree_root())
2946 inode
->auth_unpin(this);
2948 finish_waiting(WAIT_UNFREEZE
);
2950 finish_waiting(WAIT_FROZEN
, -1);
2952 // still freezing. stop.
2953 assert(state_test(STATE_FREEZINGDIR
));
2954 state_clear(STATE_FREEZINGDIR
);
2957 finish_waiting(WAIT_UNFREEZE
);
2962 * Slightly less complete than operator<<, because this is intended
2963 * for identifying a directory and its state rather than for dumping
2966 void CDir::dump(Formatter
*f
) const
2970 f
->dump_stream("path") << get_path();
2972 f
->dump_stream("dirfrag") << dirfrag();
2973 f
->dump_int("snapid_first", first
);
2975 f
->dump_stream("projected_version") << get_projected_version();
2976 f
->dump_stream("version") << get_version();
2977 f
->dump_stream("committing_version") << get_committing_version();
2978 f
->dump_stream("committed_version") << get_committed_version();
2980 f
->dump_bool("is_rep", is_rep());
2982 if (get_dir_auth() != CDIR_AUTH_DEFAULT
) {
2983 if (get_dir_auth().second
== CDIR_AUTH_UNKNOWN
) {
2984 f
->dump_stream("dir_auth") << get_dir_auth().first
;
2986 f
->dump_stream("dir_auth") << get_dir_auth();
2989 f
->dump_string("dir_auth", "");
2992 f
->open_array_section("states");
2993 MDSCacheObject::dump_states(f
);
2994 if (state_test(CDir::STATE_COMPLETE
)) f
->dump_string("state", "complete");
2995 if (state_test(CDir::STATE_FREEZINGTREE
)) f
->dump_string("state", "freezingtree");
2996 if (state_test(CDir::STATE_FROZENTREE
)) f
->dump_string("state", "frozentree");
2997 if (state_test(CDir::STATE_FROZENDIR
)) f
->dump_string("state", "frozendir");
2998 if (state_test(CDir::STATE_FREEZINGDIR
)) f
->dump_string("state", "freezingdir");
2999 if (state_test(CDir::STATE_EXPORTBOUND
)) f
->dump_string("state", "exportbound");
3000 if (state_test(CDir::STATE_IMPORTBOUND
)) f
->dump_string("state", "importbound");
3001 if (state_test(CDir::STATE_BADFRAG
)) f
->dump_string("state", "badfrag");
3004 MDSCacheObject::dump(f
);
3007 /****** Scrub Stuff *******/
3009 void CDir::scrub_info_create() const
3011 assert(!scrub_infop
);
3013 // break out of const-land to set up implicit initial state
3014 CDir
*me
= const_cast<CDir
*>(this);
3015 fnode_t
*fn
= me
->get_projected_fnode();
3017 std::unique_ptr
<scrub_info_t
> si(new scrub_info_t());
3019 si
->last_recursive
.version
= si
->recursive_start
.version
=
3020 fn
->recursive_scrub_version
;
3021 si
->last_recursive
.time
= si
->recursive_start
.time
=
3022 fn
->recursive_scrub_stamp
;
3024 si
->last_local
.version
= fn
->localized_scrub_version
;
3025 si
->last_local
.time
= fn
->localized_scrub_stamp
;
3027 me
->scrub_infop
.swap(si
);
3030 void CDir::scrub_initialize(const ScrubHeaderRefConst
& header
)
3032 dout(20) << __func__
<< dendl
;
3033 assert(is_complete());
3034 assert(header
!= nullptr);
3036 // FIXME: weird implicit construction, is someone else meant
3037 // to be calling scrub_info_create first?
3039 assert(scrub_infop
&& !scrub_infop
->directory_scrubbing
);
3041 scrub_infop
->recursive_start
.version
= get_projected_version();
3042 scrub_infop
->recursive_start
.time
= ceph_clock_now();
3044 scrub_infop
->directories_to_scrub
.clear();
3045 scrub_infop
->directories_scrubbing
.clear();
3046 scrub_infop
->directories_scrubbed
.clear();
3047 scrub_infop
->others_to_scrub
.clear();
3048 scrub_infop
->others_scrubbing
.clear();
3049 scrub_infop
->others_scrubbed
.clear();
3051 for (map_t::iterator i
= items
.begin();
3054 // TODO: handle snapshot scrubbing
3055 if (i
->first
.snapid
!= CEPH_NOSNAP
)
3058 CDentry::linkage_t
*dnl
= i
->second
->get_projected_linkage();
3059 if (dnl
->is_primary()) {
3060 if (dnl
->get_inode()->is_dir())
3061 scrub_infop
->directories_to_scrub
.insert(i
->first
);
3063 scrub_infop
->others_to_scrub
.insert(i
->first
);
3064 } else if (dnl
->is_remote()) {
3065 // TODO: check remote linkage
3068 scrub_infop
->directory_scrubbing
= true;
3069 scrub_infop
->header
= header
;
3072 void CDir::scrub_finished()
3074 dout(20) << __func__
<< dendl
;
3075 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3077 assert(scrub_infop
->directories_to_scrub
.empty());
3078 assert(scrub_infop
->directories_scrubbing
.empty());
3079 scrub_infop
->directories_scrubbed
.clear();
3080 assert(scrub_infop
->others_to_scrub
.empty());
3081 assert(scrub_infop
->others_scrubbing
.empty());
3082 scrub_infop
->others_scrubbed
.clear();
3083 scrub_infop
->directory_scrubbing
= false;
3085 scrub_infop
->last_recursive
= scrub_infop
->recursive_start
;
3086 scrub_infop
->last_scrub_dirty
= true;
3089 int CDir::_next_dentry_on_set(set
<dentry_key_t
>& dns
, bool missing_okay
,
3090 MDSInternalContext
*cb
, CDentry
**dnout
)
3095 while (!dns
.empty()) {
3096 set
<dentry_key_t
>::iterator front
= dns
.begin();
3098 dn
= lookup(dnkey
.name
);
3100 if (!is_complete() &&
3101 (!has_bloom() || is_in_bloom(dnkey
.name
))) {
3102 // need to re-read this dirfrag
3108 dout(15) << " we no longer have directory dentry "
3109 << dnkey
.name
<< ", assuming it got renamed" << dendl
;
3113 dout(5) << " we lost dentry " << dnkey
.name
3114 << ", bailing out because that's impossible!" << dendl
;
3118 // okay, we got a dentry
3121 if (dn
->get_projected_version() < scrub_infop
->last_recursive
.version
&&
3122 !(scrub_infop
->header
->get_force())) {
3123 dout(15) << " skip dentry " << dnkey
.name
3124 << ", no change since last scrub" << dendl
;
3135 int CDir::scrub_dentry_next(MDSInternalContext
*cb
, CDentry
**dnout
)
3137 dout(20) << __func__
<< dendl
;
3138 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3140 dout(20) << "trying to scrub directories underneath us" << dendl
;
3141 int rval
= _next_dentry_on_set(scrub_infop
->directories_to_scrub
, true,
3144 dout(20) << __func__
<< " inserted to directories scrubbing: "
3146 scrub_infop
->directories_scrubbing
.insert((*dnout
)->key());
3147 } else if (rval
== EAGAIN
) {
3148 // we don't need to do anything else
3149 } else { // we emptied out the directory scrub set
3150 assert(rval
== ENOENT
);
3151 dout(20) << "no directories left, moving on to other kinds of dentries"
3154 rval
= _next_dentry_on_set(scrub_infop
->others_to_scrub
, false, cb
, dnout
);
3156 dout(20) << __func__
<< " inserted to others scrubbing: "
3158 scrub_infop
->others_scrubbing
.insert((*dnout
)->key());
3161 dout(20) << " returning " << rval
<< " with dn=" << *dnout
<< dendl
;
3165 void CDir::scrub_dentries_scrubbing(list
<CDentry
*> *out_dentries
)
3167 dout(20) << __func__
<< dendl
;
3168 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3170 for (set
<dentry_key_t
>::iterator i
=
3171 scrub_infop
->directories_scrubbing
.begin();
3172 i
!= scrub_infop
->directories_scrubbing
.end();
3174 CDentry
*d
= lookup(i
->name
, i
->snapid
);
3176 out_dentries
->push_back(d
);
3178 for (set
<dentry_key_t
>::iterator i
= scrub_infop
->others_scrubbing
.begin();
3179 i
!= scrub_infop
->others_scrubbing
.end();
3181 CDentry
*d
= lookup(i
->name
, i
->snapid
);
3183 out_dentries
->push_back(d
);
3187 void CDir::scrub_dentry_finished(CDentry
*dn
)
3189 dout(20) << __func__
<< " on dn " << *dn
<< dendl
;
3190 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3191 dentry_key_t dn_key
= dn
->key();
3192 if (scrub_infop
->directories_scrubbing
.erase(dn_key
)) {
3193 scrub_infop
->directories_scrubbed
.insert(dn_key
);
3195 assert(scrub_infop
->others_scrubbing
.count(dn_key
));
3196 scrub_infop
->others_scrubbing
.erase(dn_key
);
3197 scrub_infop
->others_scrubbed
.insert(dn_key
);
3201 void CDir::scrub_maybe_delete_info()
3204 !scrub_infop
->directory_scrubbing
&&
3205 !scrub_infop
->need_scrub_local
&&
3206 !scrub_infop
->last_scrub_dirty
&&
3207 !scrub_infop
->pending_scrub_error
&&
3208 scrub_infop
->dirty_scrub_stamps
.empty()) {
3209 scrub_infop
.reset();
3213 bool CDir::scrub_local()
3215 assert(is_complete());
3216 bool rval
= check_rstats(true);
3220 scrub_infop
->last_local
.time
= ceph_clock_now();
3221 scrub_infop
->last_local
.version
= get_projected_version();
3222 scrub_infop
->pending_scrub_error
= false;
3223 scrub_infop
->last_scrub_dirty
= true;
3225 scrub_infop
->pending_scrub_error
= true;
3226 if (scrub_infop
->header
->get_repair())
3227 cache
->repair_dirfrag_stats(this);
3232 std::string
CDir::get_path() const
3235 get_inode()->make_path_string(path
, true);
3239 bool CDir::should_split_fast() const
3241 // Max size a fragment can be before trigger fast splitting
3242 int fast_limit
= g_conf
->mds_bal_split_size
* g_conf
->mds_bal_fragment_fast_factor
;
3244 // Fast path: the sum of accounted size and null dentries does not
3245 // exceed threshold: we definitely are not over it.
3246 if (get_frag_size() + get_num_head_null() <= fast_limit
) {
3250 // Fast path: the accounted size of the frag exceeds threshold: we
3251 // definitely are over it
3252 if (get_frag_size() > fast_limit
) {
3256 int64_t effective_size
= 0;
3258 for (const auto &p
: items
) {
3259 const CDentry
*dn
= p
.second
;
3260 if (!dn
->get_projected_linkage()->is_null()) {
3265 return effective_size
> fast_limit
;