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()
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
->get_replicas() = get_replicas();
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 (const auto &p
: dir
->get_replicas()) {
1089 unsigned cur
= get_replicas()[p
.first
];
1091 get_replicas()[p
.first
] = p
.second
;
1095 if (dir
->get_version() > get_version())
1096 set_version(dir
->get_version());
1099 state_set(dir
->get_state() & MASK_STATE_FRAGMENT_KEPT
);
1101 dir
->finish_old_fragment(waiters
, replay
);
1102 inode
->close_dirfrag(dir
->get_frag());
1105 if (!dentry_waiters
.empty()) {
1107 for (auto& p
: dentry_waiters
) {
1108 waiting_on_dentry
[p
.first
].swap(p
.second
);
1112 if (is_auth() && !replay
)
1115 // FIXME: merge dirty old rstat
1116 fnode
.rstat
.version
= rstat_version
;
1117 fnode
.accounted_rstat
= fnode
.rstat
;
1118 fnode
.accounted_rstat
.add(rstatdiff
);
1120 fnode
.fragstat
.version
= dirstat_version
;
1121 fnode
.accounted_fragstat
= fnode
.fragstat
;
1122 fnode
.accounted_fragstat
.add(fragstatdiff
);
1124 init_fragment_pins();
1130 void CDir::resync_accounted_fragstat()
1132 fnode_t
*pf
= get_projected_fnode();
1133 inode_t
*pi
= inode
->get_projected_inode();
1135 if (pf
->accounted_fragstat
.version
!= pi
->dirstat
.version
) {
1136 pf
->fragstat
.version
= pi
->dirstat
.version
;
1137 dout(10) << "resync_accounted_fragstat " << pf
->accounted_fragstat
<< " -> " << pf
->fragstat
<< dendl
;
1138 pf
->accounted_fragstat
= pf
->fragstat
;
1143 * resync rstat and accounted_rstat with inode
1145 void CDir::resync_accounted_rstat()
1147 fnode_t
*pf
= get_projected_fnode();
1148 inode_t
*pi
= inode
->get_projected_inode();
1150 if (pf
->accounted_rstat
.version
!= pi
->rstat
.version
) {
1151 pf
->rstat
.version
= pi
->rstat
.version
;
1152 dout(10) << "resync_accounted_rstat " << pf
->accounted_rstat
<< " -> " << pf
->rstat
<< dendl
;
1153 pf
->accounted_rstat
= pf
->rstat
;
1154 dirty_old_rstat
.clear();
1158 void CDir::assimilate_dirty_rstat_inodes()
1160 dout(10) << "assimilate_dirty_rstat_inodes" << dendl
;
1161 for (elist
<CInode
*>::iterator p
= dirty_rstat_inodes
.begin_use_current();
1164 assert(in
->is_auth());
1165 if (in
->is_frozen())
1168 inode_t
*pi
= in
->project_inode();
1169 pi
->version
= in
->pre_dirty();
1171 inode
->mdcache
->project_rstat_inode_to_frag(in
, this, 0, 0, NULL
);
1173 state_set(STATE_ASSIMRSTAT
);
1174 dout(10) << "assimilate_dirty_rstat_inodes done" << dendl
;
1177 void CDir::assimilate_dirty_rstat_inodes_finish(MutationRef
& mut
, EMetaBlob
*blob
)
1179 if (!state_test(STATE_ASSIMRSTAT
))
1181 state_clear(STATE_ASSIMRSTAT
);
1182 dout(10) << "assimilate_dirty_rstat_inodes_finish" << dendl
;
1183 elist
<CInode
*>::iterator p
= dirty_rstat_inodes
.begin_use_current();
1188 if (in
->is_frozen())
1191 CDentry
*dn
= in
->get_projected_parent_dn();
1194 mut
->add_projected_inode(in
);
1196 in
->clear_dirty_rstat();
1197 blob
->add_primary_dentry(dn
, in
, true);
1200 if (!dirty_rstat_inodes
.empty())
1201 inode
->mdcache
->mds
->locker
->mark_updated_scatterlock(&inode
->nestlock
);
1207 /****************************************
1211 void CDir::add_dentry_waiter(const string
& dname
, snapid_t snapid
, MDSInternalContextBase
*c
)
1213 if (waiting_on_dentry
.empty())
1215 waiting_on_dentry
[string_snap_t(dname
, snapid
)].push_back(c
);
1216 dout(10) << "add_dentry_waiter dentry " << dname
1217 << " snap " << snapid
1218 << " " << c
<< " on " << *this << dendl
;
1221 void CDir::take_dentry_waiting(const string
& dname
, snapid_t first
, snapid_t last
,
1222 list
<MDSInternalContextBase
*>& ls
)
1224 if (waiting_on_dentry
.empty())
1227 string_snap_t
lb(dname
, first
);
1228 string_snap_t
ub(dname
, last
);
1229 compact_map
<string_snap_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_on_dentry
.lower_bound(lb
);
1230 while (p
!= waiting_on_dentry
.end() &&
1232 dout(10) << "take_dentry_waiting dentry " << dname
1233 << " [" << first
<< "," << last
<< "] found waiter on snap "
1235 << " on " << *this << dendl
;
1236 ls
.splice(ls
.end(), p
->second
);
1237 waiting_on_dentry
.erase(p
++);
1240 if (waiting_on_dentry
.empty())
1244 void CDir::take_sub_waiting(list
<MDSInternalContextBase
*>& ls
)
1246 dout(10) << "take_sub_waiting" << dendl
;
1247 if (!waiting_on_dentry
.empty()) {
1248 for (compact_map
<string_snap_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_on_dentry
.begin();
1249 p
!= waiting_on_dentry
.end();
1251 ls
.splice(ls
.end(), p
->second
);
1252 waiting_on_dentry
.clear();
1259 void CDir::add_waiter(uint64_t tag
, MDSInternalContextBase
*c
)
1264 if (tag
& WAIT_ATFREEZEROOT
) {
1265 if (!(is_freezing_tree_root() || is_frozen_tree_root() ||
1266 is_freezing_dir() || is_frozen_dir())) {
1268 dout(10) << "add_waiter " << std::hex
<< tag
<< std::dec
<< " " << c
<< " should be ATFREEZEROOT, " << *this << " is not root, trying parent" << dendl
;
1269 inode
->parent
->dir
->add_waiter(tag
, c
);
1275 if (tag
& WAIT_ATSUBTREEROOT
) {
1276 if (!is_subtree_root()) {
1278 dout(10) << "add_waiter " << std::hex
<< tag
<< std::dec
<< " " << c
<< " should be ATSUBTREEROOT, " << *this << " is not root, trying parent" << dendl
;
1279 inode
->parent
->dir
->add_waiter(tag
, c
);
1284 assert(!(tag
& WAIT_CREATED
) || state_test(STATE_CREATING
));
1286 MDSCacheObject::add_waiter(tag
, c
);
1291 /* NOTE: this checks dentry waiters too */
1292 void CDir::take_waiting(uint64_t mask
, list
<MDSInternalContextBase
*>& ls
)
1294 if ((mask
& WAIT_DENTRY
) && !waiting_on_dentry
.empty()) {
1295 // take all dentry waiters
1296 while (!waiting_on_dentry
.empty()) {
1297 compact_map
<string_snap_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_on_dentry
.begin();
1298 dout(10) << "take_waiting dentry " << p
->first
.name
1299 << " snap " << p
->first
.snapid
<< " on " << *this << dendl
;
1300 ls
.splice(ls
.end(), p
->second
);
1301 waiting_on_dentry
.erase(p
);
1307 MDSCacheObject::take_waiting(mask
, ls
);
1311 void CDir::finish_waiting(uint64_t mask
, int result
)
1313 dout(11) << "finish_waiting mask " << hex
<< mask
<< dec
<< " result " << result
<< " on " << *this << dendl
;
1315 list
<MDSInternalContextBase
*> finished
;
1316 take_waiting(mask
, finished
);
1318 finish_contexts(g_ceph_context
, finished
, result
);
1320 cache
->mds
->queue_waiters(finished
);
1327 fnode_t
*CDir::project_fnode()
1329 assert(get_version() != 0);
1330 fnode_t
*p
= new fnode_t
;
1331 *p
= *get_projected_fnode();
1332 projected_fnode
.push_back(p
);
1334 if (scrub_infop
&& scrub_infop
->last_scrub_dirty
) {
1335 p
->localized_scrub_stamp
= scrub_infop
->last_local
.time
;
1336 p
->localized_scrub_version
= scrub_infop
->last_local
.version
;
1337 p
->recursive_scrub_stamp
= scrub_infop
->last_recursive
.time
;
1338 p
->recursive_scrub_version
= scrub_infop
->last_recursive
.version
;
1339 scrub_infop
->last_scrub_dirty
= false;
1340 scrub_maybe_delete_info();
1343 dout(10) << "project_fnode " << p
<< dendl
;
1347 void CDir::pop_and_dirty_projected_fnode(LogSegment
*ls
)
1349 assert(!projected_fnode
.empty());
1350 dout(15) << "pop_and_dirty_projected_fnode " << projected_fnode
.front()
1351 << " v" << projected_fnode
.front()->version
<< dendl
;
1352 fnode
= *projected_fnode
.front();
1354 delete projected_fnode
.front();
1355 projected_fnode
.pop_front();
1359 version_t
CDir::pre_dirty(version_t min
)
1361 if (min
> projected_version
)
1362 projected_version
= min
;
1363 ++projected_version
;
1364 dout(10) << "pre_dirty " << projected_version
<< dendl
;
1365 return projected_version
;
1368 void CDir::mark_dirty(version_t pv
, LogSegment
*ls
)
1370 assert(get_version() < pv
);
1371 assert(pv
<= projected_version
);
1376 void CDir::_mark_dirty(LogSegment
*ls
)
1378 if (!state_test(STATE_DIRTY
)) {
1379 dout(10) << "mark_dirty (was clean) " << *this << " version " << get_version() << dendl
;
1383 dout(10) << "mark_dirty (already dirty) " << *this << " version " << get_version() << dendl
;
1386 ls
->dirty_dirfrags
.push_back(&item_dirty
);
1388 // if i've never committed, i need to be before _any_ mention of me is trimmed from the journal.
1389 if (committed_version
== 0 && !item_new
.is_on_list())
1390 ls
->new_dirfrags
.push_back(&item_new
);
1394 void CDir::mark_new(LogSegment
*ls
)
1396 ls
->new_dirfrags
.push_back(&item_new
);
1397 state_clear(STATE_CREATING
);
1399 list
<MDSInternalContextBase
*> waiters
;
1400 take_waiting(CDir::WAIT_CREATED
, waiters
);
1401 cache
->mds
->queue_waiters(waiters
);
1404 void CDir::mark_clean()
1406 dout(10) << "mark_clean " << *this << " version " << get_version() << dendl
;
1407 if (state_test(STATE_DIRTY
)) {
1408 item_dirty
.remove_myself();
1409 item_new
.remove_myself();
1411 state_clear(STATE_DIRTY
);
1416 // caller should hold auth pin of this
1417 void CDir::log_mark_dirty()
1419 if (is_dirty() || is_projected())
1420 return; // noop if it is already dirty or will be dirty
1422 version_t pv
= pre_dirty();
1423 mark_dirty(pv
, cache
->mds
->mdlog
->get_current_segment());
1426 void CDir::mark_complete() {
1427 state_set(STATE_COMPLETE
);
1431 void CDir::first_get()
1433 inode
->get(CInode::PIN_DIRFRAG
);
1436 void CDir::last_put()
1438 inode
->put(CInode::PIN_DIRFRAG
);
1443 /******************************************************************************
1447 // -----------------------
1449 void CDir::fetch(MDSInternalContextBase
*c
, bool ignore_authpinnability
)
1452 return fetch(c
, want
, ignore_authpinnability
);
1455 void CDir::fetch(MDSInternalContextBase
*c
, const string
& want_dn
, bool ignore_authpinnability
)
1457 dout(10) << "fetch on " << *this << dendl
;
1460 assert(!is_complete());
1462 if (!can_auth_pin() && !ignore_authpinnability
) {
1464 dout(7) << "fetch waiting for authpinnable" << dendl
;
1465 add_waiter(WAIT_UNFREEZE
, c
);
1467 dout(7) << "fetch not authpinnable and no context" << dendl
;
1471 // unlinked directory inode shouldn't have any entry
1472 if (!inode
->is_base() && get_parent_dir()->inode
->is_stray() &&
1473 !inode
->snaprealm
) {
1474 dout(7) << "fetch dirfrag for unlinked directory, mark complete" << dendl
;
1475 if (get_version() == 0) {
1476 assert(inode
->is_auth());
1479 if (state_test(STATE_REJOINUNDEF
)) {
1480 assert(cache
->mds
->is_rejoin());
1481 state_clear(STATE_REJOINUNDEF
);
1482 cache
->opened_undef_dirfrag(this);
1488 cache
->mds
->queue_waiter(c
);
1492 if (c
) add_waiter(WAIT_COMPLETE
, c
);
1493 if (!want_dn
.empty()) wanted_items
.insert(want_dn
);
1495 // already fetching?
1496 if (state_test(CDir::STATE_FETCHING
)) {
1497 dout(7) << "already fetching; waiting" << dendl
;
1502 state_set(CDir::STATE_FETCHING
);
1504 if (cache
->mds
->logger
) cache
->mds
->logger
->inc(l_mds_dir_fetch
);
1506 std::set
<dentry_key_t
> empty
;
1507 _omap_fetch(NULL
, empty
);
1510 void CDir::fetch(MDSInternalContextBase
*c
, const std::set
<dentry_key_t
>& keys
)
1512 dout(10) << "fetch " << keys
.size() << " keys on " << *this << dendl
;
1515 assert(!is_complete());
1517 if (!can_auth_pin()) {
1518 dout(7) << "fetch keys waiting for authpinnable" << dendl
;
1519 add_waiter(WAIT_UNFREEZE
, c
);
1522 if (state_test(CDir::STATE_FETCHING
)) {
1523 dout(7) << "fetch keys waiting for full fetch" << dendl
;
1524 add_waiter(WAIT_COMPLETE
, c
);
1529 if (cache
->mds
->logger
) cache
->mds
->logger
->inc(l_mds_dir_fetch
);
1531 _omap_fetch(c
, keys
);
1534 class C_IO_Dir_OMAP_FetchedMore
: public CDirIOContext
{
1535 MDSInternalContextBase
*fin
;
1539 map
<string
, bufferlist
> omap
; ///< carry-over from before
1540 map
<string
, bufferlist
> omap_more
; ///< new batch
1542 C_IO_Dir_OMAP_FetchedMore(CDir
*d
, MDSInternalContextBase
*f
) :
1543 CDirIOContext(d
), fin(f
), ret(0) { }
1544 void finish(int r
) {
1547 omap
.swap(omap_more
);
1549 omap
.insert(omap_more
.begin(), omap_more
.end());
1552 dir
->_omap_fetch_more(hdrbl
, omap
, fin
);
1554 dir
->_omap_fetched(hdrbl
, omap
, !fin
, r
);
1561 class C_IO_Dir_OMAP_Fetched
: public CDirIOContext
{
1562 MDSInternalContextBase
*fin
;
1566 map
<string
, bufferlist
> omap
;
1568 int ret1
, ret2
, ret3
;
1570 C_IO_Dir_OMAP_Fetched(CDir
*d
, MDSInternalContextBase
*f
) :
1571 CDirIOContext(d
), fin(f
), ret1(0), ret2(0), ret3(0) { }
1572 void finish(int r
) override
{
1573 // check the correctness of backtrace
1574 if (r
>= 0 && ret3
!= -ECANCELED
)
1575 dir
->inode
->verify_diri_backtrace(btbl
, ret3
);
1576 if (r
>= 0) r
= ret1
;
1577 if (r
>= 0) r
= ret2
;
1579 dir
->_omap_fetch_more(hdrbl
, omap
, fin
);
1581 dir
->_omap_fetched(hdrbl
, omap
, !fin
, r
);
1588 void CDir::_omap_fetch(MDSInternalContextBase
*c
, const std::set
<dentry_key_t
>& keys
)
1590 C_IO_Dir_OMAP_Fetched
*fin
= new C_IO_Dir_OMAP_Fetched(this, c
);
1591 object_t oid
= get_ondisk_object();
1592 object_locator_t
oloc(cache
->mds
->mdsmap
->get_metadata_pool());
1594 rd
.omap_get_header(&fin
->hdrbl
, &fin
->ret1
);
1597 rd
.omap_get_vals("", "", g_conf
->mds_dir_keys_per_op
,
1598 &fin
->omap
, &fin
->more
, &fin
->ret2
);
1601 std::set
<std::string
> str_keys
;
1602 for (auto p
= keys
.begin(); p
!= keys
.end(); ++p
) {
1605 str_keys
.insert(str
);
1607 rd
.omap_get_vals_by_keys(str_keys
, &fin
->omap
, &fin
->ret2
);
1609 // check the correctness of backtrace
1610 if (g_conf
->mds_verify_backtrace
> 0 && frag
== frag_t()) {
1611 rd
.getxattr("parent", &fin
->btbl
, &fin
->ret3
);
1612 rd
.set_last_op_flags(CEPH_OSD_OP_FLAG_FAILOK
);
1614 fin
->ret3
= -ECANCELED
;
1617 cache
->mds
->objecter
->read(oid
, oloc
, rd
, CEPH_NOSNAP
, NULL
, 0,
1618 new C_OnFinisher(fin
, cache
->mds
->finisher
));
1621 void CDir::_omap_fetch_more(
1623 map
<string
, bufferlist
>& omap
,
1624 MDSInternalContextBase
*c
)
1626 // we have more omap keys to fetch!
1627 object_t oid
= get_ondisk_object();
1628 object_locator_t
oloc(cache
->mds
->mdsmap
->get_metadata_pool());
1629 C_IO_Dir_OMAP_FetchedMore
*fin
= new C_IO_Dir_OMAP_FetchedMore(this, c
);
1630 fin
->hdrbl
.claim(hdrbl
);
1631 fin
->omap
.swap(omap
);
1633 rd
.omap_get_vals(fin
->omap
.rbegin()->first
,
1634 "", /* filter prefix */
1635 g_conf
->mds_dir_keys_per_op
,
1639 cache
->mds
->objecter
->read(oid
, oloc
, rd
, CEPH_NOSNAP
, NULL
, 0,
1640 new C_OnFinisher(fin
, cache
->mds
->finisher
));
1643 CDentry
*CDir::_load_dentry(
1644 const std::string
&key
,
1645 const std::string
&dname
,
1646 const snapid_t last
,
1649 const std::set
<snapid_t
> *snaps
,
1651 list
<CInode
*> *undef_inodes
)
1653 bufferlist::iterator q
= bl
.begin();
1662 dout(20) << "_fetched pos " << pos
<< " marker '" << type
<< "' dname '" << dname
1663 << " [" << first
<< "," << last
<< "]"
1667 if (snaps
&& last
!= CEPH_NOSNAP
) {
1668 set
<snapid_t
>::const_iterator p
= snaps
->lower_bound(first
);
1669 if (p
== snaps
->end() || *p
> last
) {
1670 dout(10) << " skipping stale dentry on [" << first
<< "," << last
<< "]" << dendl
;
1676 * look for existing dentry for _last_ snap, because unlink +
1677 * create may leave a "hole" (epochs during which the dentry
1678 * doesn't exist) but for which no explicit negative dentry is in
1683 dn
= lookup_exact_snap(dname
, last
);
1685 dn
= lookup(dname
, last
);
1690 unsigned char d_type
;
1692 ::decode(d_type
, q
);
1696 stale_items
.insert(key
);
1697 *force_dirty
= true;
1703 if (dn
->get_linkage()->get_inode() == 0) {
1704 dout(12) << "_fetched had NEG dentry " << *dn
<< dendl
;
1706 dout(12) << "_fetched had dentry " << *dn
<< dendl
;
1710 dn
= add_remote_dentry(dname
, ino
, d_type
, first
, last
);
1713 CInode
*in
= cache
->get_inode(ino
); // we may or may not have it.
1715 dn
->link_remote(dn
->get_linkage(), in
);
1716 dout(12) << "_fetched got remote link " << ino
<< " which we have " << *in
<< dendl
;
1718 dout(12) << "_fetched got remote link " << ino
<< " (dont' have it)" << dendl
;
1722 else if (type
== 'I') {
1725 // Load inode data before looking up or constructing CInode
1726 InodeStore inode_data
;
1727 inode_data
.decode_bare(q
);
1731 stale_items
.insert(key
);
1732 *force_dirty
= true;
1737 bool undef_inode
= false;
1739 CInode
*in
= dn
->get_linkage()->get_inode();
1741 dout(12) << "_fetched had dentry " << *dn
<< dendl
;
1742 if (in
->state_test(CInode::STATE_REJOINUNDEF
)) {
1743 undef_inodes
->push_back(in
);
1747 dout(12) << "_fetched had NEG dentry " << *dn
<< dendl
;
1750 if (!dn
|| undef_inode
) {
1752 CInode
*in
= cache
->get_inode(inode_data
.inode
.ino
, last
);
1753 if (!in
|| undef_inode
) {
1754 if (undef_inode
&& in
)
1757 in
= new CInode(cache
, true, first
, last
);
1759 in
->inode
= inode_data
.inode
;
1761 if (in
->is_symlink())
1762 in
->symlink
= inode_data
.symlink
;
1764 in
->dirfragtree
.swap(inode_data
.dirfragtree
);
1765 in
->xattrs
.swap(inode_data
.xattrs
);
1766 in
->old_inodes
.swap(inode_data
.old_inodes
);
1767 if (!in
->old_inodes
.empty()) {
1768 snapid_t min_first
= in
->old_inodes
.rbegin()->first
+ 1;
1769 if (min_first
> in
->first
)
1770 in
->first
= min_first
;
1773 in
->oldest_snap
= inode_data
.oldest_snap
;
1774 in
->decode_snap_blob(inode_data
.snap_blob
);
1775 if (snaps
&& !in
->snaprealm
)
1776 in
->purge_stale_snap_data(*snaps
);
1779 cache
->add_inode(in
); // add
1780 dn
= add_primary_dentry(dname
, in
, first
, last
); // link
1782 dout(12) << "_fetched got " << *dn
<< " " << *in
<< dendl
;
1784 if (in
->inode
.is_dirty_rstat())
1785 in
->mark_dirty_rstat();
1787 //in->hack_accessed = false;
1788 //in->hack_load_stamp = ceph_clock_now();
1789 //num_new_inodes_loaded++;
1791 dout(0) << "_fetched badness: got (but i already had) " << *in
1792 << " mode " << in
->inode
.mode
1793 << " mtime " << in
->inode
.mtime
<< dendl
;
1794 string dirpath
, inopath
;
1795 this->inode
->make_path_string(dirpath
);
1796 in
->make_path_string(inopath
);
1797 cache
->mds
->clog
->error() << "loaded dup inode " << inode_data
.inode
.ino
1798 << " [" << first
<< "," << last
<< "] v" << inode_data
.inode
.version
1799 << " at " << dirpath
<< "/" << dname
1800 << ", but inode " << in
->vino() << " v" << in
->inode
.version
1801 << " already exists at " << inopath
;
1806 std::ostringstream oss
;
1807 oss
<< "Invalid tag char '" << type
<< "' pos " << pos
;
1808 throw buffer::malformed_input(oss
.str());
1814 void CDir::_omap_fetched(bufferlist
& hdrbl
, map
<string
, bufferlist
>& omap
,
1815 bool complete
, int r
)
1817 LogChannelRef clog
= cache
->mds
->clog
;
1818 dout(10) << "_fetched header " << hdrbl
.length() << " bytes "
1819 << omap
.size() << " keys for " << *this << dendl
;
1821 assert(r
== 0 || r
== -ENOENT
|| r
== -ENODATA
);
1823 assert(!is_frozen());
1825 if (hdrbl
.length() == 0) {
1826 dout(0) << "_fetched missing object for " << *this << dendl
;
1828 clog
->error() << "dir " << dirfrag() << " object missing on disk; some "
1829 "files may be lost (" << get_path() << ")";
1837 bufferlist::iterator p
= hdrbl
.begin();
1839 ::decode(got_fnode
, p
);
1840 } catch (const buffer::error
&err
) {
1841 derr
<< "Corrupt fnode in dirfrag " << dirfrag()
1842 << ": " << err
<< dendl
;
1843 clog
->warn() << "Corrupt fnode header in " << dirfrag() << ": "
1844 << err
<< " (" << get_path() << ")";
1849 clog
->warn() << "header buffer of dir " << dirfrag() << " has "
1850 << hdrbl
.length() - p
.get_off() << " extra bytes ("
1851 << get_path() << ")";
1857 dout(10) << "_fetched version " << got_fnode
.version
<< dendl
;
1859 // take the loaded fnode?
1860 // only if we are a fresh CDir* with no prior state.
1861 if (get_version() == 0) {
1862 assert(!is_projected());
1863 assert(!state_test(STATE_COMMITTING
));
1865 projected_version
= committing_version
= committed_version
= got_fnode
.version
;
1867 if (state_test(STATE_REJOINUNDEF
)) {
1868 assert(cache
->mds
->is_rejoin());
1869 state_clear(STATE_REJOINUNDEF
);
1870 cache
->opened_undef_dirfrag(this);
1874 list
<CInode
*> undef_inodes
;
1876 // purge stale snaps?
1877 // only if we have past_parents open!
1878 bool force_dirty
= false;
1879 const set
<snapid_t
> *snaps
= NULL
;
1880 SnapRealm
*realm
= inode
->find_snaprealm();
1881 if (!realm
->have_past_parents_open()) {
1882 dout(10) << " no snap purge, one or more past parents NOT open" << dendl
;
1883 } else if (fnode
.snap_purged_thru
< realm
->get_last_destroyed()) {
1884 snaps
= &realm
->get_snaps();
1885 dout(10) << " snap_purged_thru " << fnode
.snap_purged_thru
1886 << " < " << realm
->get_last_destroyed()
1887 << ", snap purge based on " << *snaps
<< dendl
;
1888 if (get_num_snap_items() == 0) {
1889 fnode
.snap_purged_thru
= realm
->get_last_destroyed();
1894 unsigned pos
= omap
.size() - 1;
1895 for (map
<string
, bufferlist
>::reverse_iterator p
= omap
.rbegin();
1900 dentry_key_t::decode_helper(p
->first
, dname
, last
);
1905 p
->first
, dname
, last
, p
->second
, pos
, snaps
,
1906 &force_dirty
, &undef_inodes
);
1907 } catch (const buffer::error
&err
) {
1908 cache
->mds
->clog
->warn() << "Corrupt dentry '" << dname
<< "' in "
1909 "dir frag " << dirfrag() << ": "
1910 << err
<< "(" << get_path() << ")";
1912 // Remember that this dentry is damaged. Subsequent operations
1913 // that try to act directly on it will get their EIOs, but this
1914 // dirfrag as a whole will continue to look okay (minus the
1915 // mysteriously-missing dentry)
1916 go_bad_dentry(last
, dname
);
1918 // Anyone who was WAIT_DENTRY for this guy will get kicked
1919 // to RetryRequest, and hit the DamageTable-interrogating path.
1920 // Stats will now be bogus because we will think we're complete,
1921 // but have 1 or more missing dentries.
1925 if (dn
&& (wanted_items
.count(dname
) > 0 || !complete
)) {
1926 dout(10) << " touching wanted dn " << *dn
<< dendl
;
1927 inode
->mdcache
->touch_dentry(dn
);
1930 /** clean underwater item?
1931 * Underwater item is something that is dirty in our cache from
1932 * journal replay, but was previously flushed to disk before the
1935 * We only do this is committed_version == 0. that implies either
1936 * - this is a fetch after from a clean/empty CDir is created
1937 * (and has no effect, since the dn won't exist); or
1938 * - this is a fetch after _recovery_, which is what we're worried
1939 * about. Items that are marked dirty from the journal should be
1940 * marked clean if they appear on disk.
1942 if (committed_version
== 0 &&
1944 dn
->get_version() <= got_fnode
.version
&&
1946 dout(10) << "_fetched had underwater dentry " << *dn
<< ", marking clean" << dendl
;
1949 if (dn
->get_linkage()->is_primary()) {
1950 assert(dn
->get_linkage()->get_inode()->get_version() <= got_fnode
.version
);
1951 dout(10) << "_fetched had underwater inode " << *dn
->get_linkage()->get_inode() << ", marking clean" << dendl
;
1952 dn
->get_linkage()->get_inode()->mark_clean();
1957 //cache->mds->logger->inc("newin", num_new_inodes_loaded);
1959 // mark complete, !fetching
1961 wanted_items
.clear();
1963 state_clear(STATE_FETCHING
);
1965 if (scrub_infop
&& scrub_infop
->need_scrub_local
) {
1966 scrub_infop
->need_scrub_local
= false;
1971 // open & force frags
1972 while (!undef_inodes
.empty()) {
1973 CInode
*in
= undef_inodes
.front();
1974 undef_inodes
.pop_front();
1975 in
->state_clear(CInode::STATE_REJOINUNDEF
);
1976 cache
->opened_undef_inode(in
);
1979 // dirty myself to remove stale snap dentries
1980 if (force_dirty
&& !inode
->mdcache
->is_readonly())
1987 finish_waiting(WAIT_COMPLETE
, 0);
1991 void CDir::_go_bad()
1993 if (get_version() == 0)
1995 state_set(STATE_BADFRAG
);
1996 // mark complete, !fetching
1998 state_clear(STATE_FETCHING
);
2002 finish_waiting(WAIT_COMPLETE
, -EIO
);
2005 void CDir::go_bad_dentry(snapid_t last
, const std::string
&dname
)
2007 dout(10) << "go_bad_dentry " << dname
<< dendl
;
2008 const bool fatal
= cache
->mds
->damage_table
.notify_dentry(
2009 inode
->ino(), frag
, last
, dname
, get_path() + "/" + dname
);
2011 cache
->mds
->damaged();
2012 ceph_abort(); // unreachable, damaged() respawns us
2016 void CDir::go_bad(bool complete
)
2018 dout(10) << "go_bad " << frag
<< dendl
;
2019 const bool fatal
= cache
->mds
->damage_table
.notify_dirfrag(
2020 inode
->ino(), frag
, get_path());
2022 cache
->mds
->damaged();
2023 ceph_abort(); // unreachable, damaged() respawns us
2032 // -----------------------
2038 * @param want - min version i want committed
2039 * @param c - callback for completion
2041 void CDir::commit(version_t want
, MDSInternalContextBase
*c
, bool ignore_authpinnability
, int op_prio
)
2043 dout(10) << "commit want " << want
<< " on " << *this << dendl
;
2044 if (want
== 0) want
= get_version();
2047 assert(want
<= get_version() || get_version() == 0); // can't commit the future
2048 assert(want
> committed_version
); // the caller is stupid
2050 assert(ignore_authpinnability
|| can_auth_pin());
2052 // note: queue up a noop if necessary, so that we always
2055 c
= new C_MDSInternalNoop
;
2057 // auth_pin on first waiter
2058 if (waiting_for_commit
.empty())
2060 waiting_for_commit
[want
].push_back(c
);
2063 _commit(want
, op_prio
);
2066 class C_IO_Dir_Committed
: public CDirIOContext
{
2069 C_IO_Dir_Committed(CDir
*d
, version_t v
) : CDirIOContext(d
), version(v
) { }
2070 void finish(int r
) override
{
2071 dir
->_committed(r
, version
);
2076 * Flush out the modified dentries in this dir. Keep the bufferlist
2077 * below max_write_size;
2079 void CDir::_omap_commit(int op_prio
)
2081 dout(10) << "_omap_commit" << dendl
;
2083 unsigned max_write_size
= cache
->max_dir_commit_size
;
2084 unsigned write_size
= 0;
2087 op_prio
= CEPH_MSG_PRIO_DEFAULT
;
2090 const set
<snapid_t
> *snaps
= NULL
;
2091 SnapRealm
*realm
= inode
->find_snaprealm();
2092 if (!realm
->have_past_parents_open()) {
2093 dout(10) << " no snap purge, one or more past parents NOT open" << dendl
;
2094 } else if (fnode
.snap_purged_thru
< realm
->get_last_destroyed()) {
2095 snaps
= &realm
->get_snaps();
2096 dout(10) << " snap_purged_thru " << fnode
.snap_purged_thru
2097 << " < " << realm
->get_last_destroyed()
2098 << ", snap purge based on " << *snaps
<< dendl
;
2099 // fnode.snap_purged_thru = realm->get_last_destroyed();
2102 set
<string
> to_remove
;
2103 map
<string
, bufferlist
> to_set
;
2105 C_GatherBuilder
gather(g_ceph_context
,
2106 new C_OnFinisher(new C_IO_Dir_Committed(this,
2108 cache
->mds
->finisher
));
2111 object_t oid
= get_ondisk_object();
2112 object_locator_t
oloc(cache
->mds
->mdsmap
->get_metadata_pool());
2114 if (!stale_items
.empty()) {
2115 for (compact_set
<string
>::iterator p
= stale_items
.begin();
2116 p
!= stale_items
.end();
2118 to_remove
.insert(*p
);
2119 write_size
+= (*p
).length();
2121 stale_items
.clear();
2124 for (map_t::iterator p
= items
.begin();
2125 p
!= items
.end(); ) {
2126 CDentry
*dn
= p
->second
;
2130 dn
->key().encode(key
);
2132 if (dn
->last
!= CEPH_NOSNAP
&&
2133 snaps
&& try_trim_snap_dentry(dn
, *snaps
)) {
2134 dout(10) << " rm " << key
<< dendl
;
2135 write_size
+= key
.length();
2136 to_remove
.insert(key
);
2140 if (!dn
->is_dirty() &&
2141 (!dn
->state_test(CDentry::STATE_FRAGMENTING
) || dn
->get_linkage()->is_null()))
2142 continue; // skip clean dentries
2144 if (dn
->get_linkage()->is_null()) {
2145 dout(10) << " rm " << dn
->name
<< " " << *dn
<< dendl
;
2146 write_size
+= key
.length();
2147 to_remove
.insert(key
);
2149 dout(10) << " set " << dn
->name
<< " " << *dn
<< dendl
;
2151 _encode_dentry(dn
, dnbl
, snaps
);
2152 write_size
+= key
.length() + dnbl
.length();
2153 to_set
[key
].swap(dnbl
);
2156 if (write_size
>= max_write_size
) {
2158 op
.priority
= op_prio
;
2160 // don't create new dirfrag blindly
2161 if (!is_new() && !state_test(CDir::STATE_FRAGMENTING
))
2162 op
.stat(NULL
, (ceph::real_time
*) NULL
, NULL
);
2164 if (!to_set
.empty())
2165 op
.omap_set(to_set
);
2166 if (!to_remove
.empty())
2167 op
.omap_rm_keys(to_remove
);
2169 cache
->mds
->objecter
->mutate(oid
, oloc
, op
, snapc
,
2170 ceph::real_clock::now(),
2171 0, gather
.new_sub());
2180 op
.priority
= op_prio
;
2182 // don't create new dirfrag blindly
2183 if (!is_new() && !state_test(CDir::STATE_FRAGMENTING
))
2184 op
.stat(NULL
, (ceph::real_time
*)NULL
, NULL
);
2187 * save the header at the last moment.. If we were to send it off before other
2188 * updates, but die before sending them all, we'd think that the on-disk state
2189 * was fully committed even though it wasn't! However, since the messages are
2190 * strictly ordered between the MDS and the OSD, and since messages to a given
2191 * PG are strictly ordered, if we simply send the message containing the header
2192 * off last, we cannot get our header into an incorrect state.
2195 ::encode(fnode
, header
);
2196 op
.omap_set_header(header
);
2198 if (!to_set
.empty())
2199 op
.omap_set(to_set
);
2200 if (!to_remove
.empty())
2201 op
.omap_rm_keys(to_remove
);
2203 cache
->mds
->objecter
->mutate(oid
, oloc
, op
, snapc
,
2204 ceph::real_clock::now(),
2205 0, gather
.new_sub());
2210 void CDir::_encode_dentry(CDentry
*dn
, bufferlist
& bl
,
2211 const set
<snapid_t
> *snaps
)
2213 // clear dentry NEW flag, if any. we can no longer silently drop it.
2216 ::encode(dn
->first
, bl
);
2218 // primary or remote?
2219 if (dn
->linkage
.is_remote()) {
2220 inodeno_t ino
= dn
->linkage
.get_remote_ino();
2221 unsigned char d_type
= dn
->linkage
.get_remote_d_type();
2222 dout(14) << " pos " << bl
.length() << " dn '" << dn
->name
<< "' remote ino " << ino
<< dendl
;
2224 // marker, name, ino
2225 bl
.append('L'); // remote link
2227 ::encode(d_type
, bl
);
2228 } else if (dn
->linkage
.is_primary()) {
2230 CInode
*in
= dn
->linkage
.get_inode();
2233 dout(14) << " pos " << bl
.length() << " dn '" << dn
->name
<< "' inode " << *in
<< dendl
;
2235 // marker, name, inode, [symlink string]
2236 bl
.append('I'); // inode
2238 if (in
->is_multiversion()) {
2239 if (!in
->snaprealm
) {
2241 in
->purge_stale_snap_data(*snaps
);
2242 } else if (in
->snaprealm
->have_past_parents_open()) {
2243 in
->purge_stale_snap_data(in
->snaprealm
->get_snaps());
2247 bufferlist snap_blob
;
2248 in
->encode_snap_blob(snap_blob
);
2249 in
->encode_bare(bl
, cache
->mds
->mdsmap
->get_up_features(), &snap_blob
);
2251 assert(!dn
->linkage
.is_null());
2255 void CDir::_commit(version_t want
, int op_prio
)
2257 dout(10) << "_commit want " << want
<< " on " << *this << dendl
;
2259 // we can't commit things in the future.
2260 // (even the projected future.)
2261 assert(want
<= get_version() || get_version() == 0);
2263 // check pre+postconditions.
2266 // already committed?
2267 if (committed_version
>= want
) {
2268 dout(10) << "already committed " << committed_version
<< " >= " << want
<< dendl
;
2271 // already committing >= want?
2272 if (committing_version
>= want
) {
2273 dout(10) << "already committing " << committing_version
<< " >= " << want
<< dendl
;
2274 assert(state_test(STATE_COMMITTING
));
2278 // alrady committed an older version?
2279 if (committing_version
> committed_version
) {
2280 dout(10) << "already committing older " << committing_version
<< ", waiting for that to finish" << dendl
;
2285 committing_version
= get_version();
2287 // mark committing (if not already)
2288 if (!state_test(STATE_COMMITTING
)) {
2289 dout(10) << "marking committing" << dendl
;
2290 state_set(STATE_COMMITTING
);
2293 if (cache
->mds
->logger
) cache
->mds
->logger
->inc(l_mds_dir_commit
);
2295 _omap_commit(op_prio
);
2302 * @param v version i just committed
2304 void CDir::_committed(int r
, version_t v
)
2307 // the directory could be partly purged during MDS failover
2308 if (r
== -ENOENT
&& committed_version
== 0 &&
2309 !inode
->is_base() && get_parent_dir()->inode
->is_stray()) {
2311 if (inode
->snaprealm
)
2312 inode
->state_set(CInode::STATE_MISSINGOBJS
);
2315 dout(1) << "commit error " << r
<< " v " << v
<< dendl
;
2316 cache
->mds
->clog
->error() << "failed to commit dir " << dirfrag() << " object,"
2318 cache
->mds
->handle_write_error(r
);
2323 dout(10) << "_committed v " << v
<< " on " << *this << dendl
;
2326 bool stray
= inode
->is_stray();
2329 assert(v
> committed_version
);
2330 assert(v
<= committing_version
);
2331 committed_version
= v
;
2333 // _all_ commits done?
2334 if (committing_version
== committed_version
)
2335 state_clear(CDir::STATE_COMMITTING
);
2337 // _any_ commit, even if we've been redirtied, means we're no longer new.
2338 item_new
.remove_myself();
2341 if (committed_version
== get_version())
2345 for (map_t::iterator it
= items
.begin();
2346 it
!= items
.end(); ) {
2347 CDentry
*dn
= it
->second
;
2351 if (dn
->linkage
.is_primary()) {
2352 CInode
*in
= dn
->linkage
.get_inode();
2354 assert(in
->is_auth());
2356 if (committed_version
>= in
->get_version()) {
2357 if (in
->is_dirty()) {
2358 dout(15) << " dir " << committed_version
<< " >= inode " << in
->get_version() << " now clean " << *in
<< dendl
;
2362 dout(15) << " dir " << committed_version
<< " < inode " << in
->get_version() << " still dirty " << *in
<< dendl
;
2363 assert(in
->is_dirty() || in
->last
< CEPH_NOSNAP
); // special case for cow snap items (not predirtied)
2368 if (committed_version
>= dn
->get_version()) {
2369 if (dn
->is_dirty()) {
2370 dout(15) << " dir " << committed_version
<< " >= dn " << dn
->get_version() << " now clean " << *dn
<< dendl
;
2373 // drop clean null stray dentries immediately
2375 dn
->get_num_ref() == 0 &&
2376 !dn
->is_projected() &&
2377 dn
->get_linkage()->is_null())
2381 dout(15) << " dir " << committed_version
<< " < dn " << dn
->get_version() << " still dirty " << *dn
<< dendl
;
2386 bool were_waiters
= !waiting_for_commit
.empty();
2388 compact_map
<version_t
, list
<MDSInternalContextBase
*> >::iterator p
= waiting_for_commit
.begin();
2389 while (p
!= waiting_for_commit
.end()) {
2390 compact_map
<version_t
, list
<MDSInternalContextBase
*> >::iterator n
= p
;
2392 if (p
->first
> committed_version
) {
2393 dout(10) << " there are waiters for " << p
->first
<< ", committing again" << dendl
;
2394 _commit(p
->first
, -1);
2397 cache
->mds
->queue_waiters(p
->second
);
2398 waiting_for_commit
.erase(p
);
2402 // try drop dentries in this dirfrag if it's about to be purged
2403 if (!inode
->is_base() && get_parent_dir()->inode
->is_stray() &&
2405 cache
->maybe_eval_stray(inode
, true);
2407 // unpin if we kicked the last waiter.
2409 waiting_for_commit
.empty())
2418 void CDir::encode_export(bufferlist
& bl
)
2420 assert(!is_projected());
2421 ::encode(first
, bl
);
2422 ::encode(fnode
, bl
);
2423 ::encode(dirty_old_rstat
, bl
);
2424 ::encode(committed_version
, bl
);
2426 ::encode(state
, bl
);
2427 ::encode(dir_rep
, bl
);
2429 ::encode(pop_me
, bl
);
2430 ::encode(pop_auth_subtree
, bl
);
2432 ::encode(dir_rep_by
, bl
);
2433 ::encode(get_replicas(), bl
);
2435 get(PIN_TEMPEXPORTING
);
2438 void CDir::finish_export(utime_t now
)
2440 state
&= MASK_STATE_EXPORT_KEPT
;
2441 pop_auth_subtree_nested
.sub(now
, cache
->decayrate
, pop_auth_subtree
);
2443 pop_auth_subtree
.zero(now
);
2444 put(PIN_TEMPEXPORTING
);
2445 dirty_old_rstat
.clear();
2448 void CDir::decode_import(bufferlist::iterator
& blp
, utime_t now
, LogSegment
*ls
)
2450 ::decode(first
, blp
);
2451 ::decode(fnode
, blp
);
2452 ::decode(dirty_old_rstat
, blp
);
2453 projected_version
= fnode
.version
;
2454 ::decode(committed_version
, blp
);
2455 committing_version
= committed_version
;
2459 state
&= MASK_STATE_IMPORT_KEPT
;
2460 state_set(STATE_AUTH
| (s
& MASK_STATE_EXPORTED
));
2467 ::decode(dir_rep
, blp
);
2469 ::decode(pop_me
, now
, blp
);
2470 ::decode(pop_auth_subtree
, now
, blp
);
2471 pop_auth_subtree_nested
.add(now
, cache
->decayrate
, pop_auth_subtree
);
2473 ::decode(dir_rep_by
, blp
);
2474 ::decode(get_replicas(), blp
);
2475 if (is_replicated()) get(PIN_REPLICATED
);
2477 replica_nonce
= 0; // no longer defined
2479 // did we import some dirty scatterlock data?
2480 if (dirty_old_rstat
.size() ||
2481 !(fnode
.rstat
== fnode
.accounted_rstat
)) {
2482 cache
->mds
->locker
->mark_updated_scatterlock(&inode
->nestlock
);
2483 ls
->dirty_dirfrag_nest
.push_back(&inode
->item_dirty_dirfrag_nest
);
2485 if (!(fnode
.fragstat
== fnode
.accounted_fragstat
)) {
2486 cache
->mds
->locker
->mark_updated_scatterlock(&inode
->filelock
);
2487 ls
->dirty_dirfrag_dir
.push_back(&inode
->item_dirty_dirfrag_dir
);
2489 if (is_dirty_dft()) {
2490 if (inode
->dirfragtreelock
.get_state() != LOCK_MIX
&&
2491 inode
->dirfragtreelock
.is_stable()) {
2492 // clear stale dirtydft
2493 state_clear(STATE_DIRTYDFT
);
2495 cache
->mds
->locker
->mark_updated_scatterlock(&inode
->dirfragtreelock
);
2496 ls
->dirty_dirfrag_dirfragtree
.push_back(&inode
->item_dirty_dirfrag_dirfragtree
);
2504 /********************************
2509 * if dir_auth.first == parent, auth is same as inode.
2510 * unless .second != unknown, in which case that sticks.
2512 mds_authority_t
CDir::authority() const
2514 if (is_subtree_root())
2517 return inode
->authority();
2520 /** is_subtree_root()
2521 * true if this is an auth delegation point.
2522 * that is, dir_auth != default (parent,unknown)
2524 * some key observations:
2526 * - any region bound will be an export, or frozen.
2528 * note that this DOES heed dir_auth.pending
2531 bool CDir::is_subtree_root()
2533 if (dir_auth == CDIR_AUTH_DEFAULT) {
2534 //dout(10) << "is_subtree_root false " << dir_auth << " != " << CDIR_AUTH_DEFAULT
2535 //<< " on " << ino() << dendl;
2538 //dout(10) << "is_subtree_root true " << dir_auth << " != " << CDIR_AUTH_DEFAULT
2539 //<< " on " << ino() << dendl;
2546 * true if we are x, or an ancestor of x
2548 bool CDir::contains(CDir
*x
)
2553 x
= x
->get_inode()->get_projected_parent_dir();
2563 void CDir::set_dir_auth(mds_authority_t a
)
2565 dout(10) << "setting dir_auth=" << a
2566 << " from " << dir_auth
2567 << " on " << *this << dendl
;
2569 bool was_subtree
= is_subtree_root();
2570 bool was_ambiguous
= dir_auth
.second
>= 0;
2575 // new subtree root?
2576 if (!was_subtree
&& is_subtree_root()) {
2577 dout(10) << " new subtree root, adjusting auth_pins" << dendl
;
2579 // adjust nested auth pins
2580 if (get_cum_auth_pins())
2581 inode
->adjust_nested_auth_pins(-1, NULL
);
2583 // unpin parent of frozen dir/tree?
2584 if (inode
->is_auth()) {
2585 assert(!is_frozen_tree_root());
2586 if (is_frozen_dir())
2587 inode
->auth_unpin(this);
2590 if (was_subtree
&& !is_subtree_root()) {
2591 dout(10) << " old subtree root, adjusting auth_pins" << dendl
;
2593 // adjust nested auth pins
2594 if (get_cum_auth_pins())
2595 inode
->adjust_nested_auth_pins(1, NULL
);
2597 // pin parent of frozen dir/tree?
2598 if (inode
->is_auth()) {
2599 assert(!is_frozen_tree_root());
2600 if (is_frozen_dir())
2601 inode
->auth_pin(this);
2605 // newly single auth?
2606 if (was_ambiguous
&& dir_auth
.second
== CDIR_AUTH_UNKNOWN
) {
2607 list
<MDSInternalContextBase
*> ls
;
2608 take_waiting(WAIT_SINGLEAUTH
, ls
);
2609 cache
->mds
->queue_waiters(ls
);
2614 /*****************************************
2615 * AUTH PINS and FREEZING
2617 * the basic plan is that auth_pins only exist in auth regions, and they
2618 * prevent a freeze (and subsequent auth change).
2620 * however, we also need to prevent a parent from freezing if a child is frozen.
2621 * for that reason, the parent inode of a frozen directory is auth_pinned.
2623 * the oddity is when the frozen directory is a subtree root. if that's the case,
2624 * the parent inode isn't frozen. which means that when subtree authority is adjusted
2625 * at the bounds, inodes for any frozen bound directories need to get auth_pins at that
2630 void CDir::auth_pin(void *by
)
2636 #ifdef MDS_AUTHPIN_SET
2637 auth_pin_set
.insert(by
);
2640 dout(10) << "auth_pin by " << by
2642 << " count now " << auth_pins
<< " + " << nested_auth_pins
<< dendl
;
2645 if (!is_subtree_root() &&
2646 get_cum_auth_pins() == 1)
2647 inode
->adjust_nested_auth_pins(1, by
);
2650 void CDir::auth_unpin(void *by
)
2654 #ifdef MDS_AUTHPIN_SET
2655 assert(auth_pin_set
.count(by
));
2656 auth_pin_set
.erase(auth_pin_set
.find(by
));
2661 dout(10) << "auth_unpin by " << by
2663 << " count now " << auth_pins
<< " + " << nested_auth_pins
<< dendl
;
2664 assert(auth_pins
>= 0);
2666 int newcum
= get_cum_auth_pins();
2668 maybe_finish_freeze(); // pending freeze?
2671 if (!is_subtree_root() &&
2673 inode
->adjust_nested_auth_pins(-1, by
);
2676 void CDir::adjust_nested_auth_pins(int inc
, int dirinc
, void *by
)
2679 nested_auth_pins
+= inc
;
2680 dir_auth_pins
+= dirinc
;
2682 dout(15) << "adjust_nested_auth_pins " << inc
<< "/" << dirinc
<< " on " << *this
2683 << " by " << by
<< " count now "
2684 << auth_pins
<< " + " << nested_auth_pins
<< dendl
;
2685 assert(nested_auth_pins
>= 0);
2686 assert(dir_auth_pins
>= 0);
2688 int newcum
= get_cum_auth_pins();
2690 maybe_finish_freeze(); // pending freeze?
2693 if (!is_subtree_root()) {
2695 inode
->adjust_nested_auth_pins(-1, by
);
2696 else if (newcum
== inc
)
2697 inode
->adjust_nested_auth_pins(1, by
);
2701 #ifdef MDS_VERIFY_FRAGSTAT
2702 void CDir::verify_fragstat()
2704 assert(is_complete());
2705 if (inode
->is_stray())
2709 memset(&c
, 0, sizeof(c
));
2711 for (map_t::iterator it
= items
.begin();
2714 CDentry
*dn
= it
->second
;
2718 dout(10) << " " << *dn
<< dendl
;
2719 if (dn
->is_primary())
2720 dout(10) << " " << *dn
->inode
<< dendl
;
2722 if (dn
->is_primary()) {
2723 if (dn
->inode
->is_dir())
2728 if (dn
->is_remote()) {
2729 if (dn
->get_remote_d_type() == DT_DIR
)
2736 if (c
.nsubdirs
!= fnode
.fragstat
.nsubdirs
||
2737 c
.nfiles
!= fnode
.fragstat
.nfiles
) {
2738 dout(0) << "verify_fragstat failed " << fnode
.fragstat
<< " on " << *this << dendl
;
2739 dout(0) << " i count " << c
<< dendl
;
2742 dout(0) << "verify_fragstat ok " << fnode
.fragstat
<< " on " << *this << dendl
;
2747 /*****************************************************************************
2753 bool CDir::freeze_tree()
2755 assert(!is_frozen());
2756 assert(!is_freezing());
2759 if (is_freezeable(true)) {
2764 state_set(STATE_FREEZINGTREE
);
2765 ++num_freezing_trees
;
2766 dout(10) << "freeze_tree waiting " << *this << dendl
;
2771 void CDir::_freeze_tree()
2773 dout(10) << "_freeze_tree " << *this << dendl
;
2774 assert(is_freezeable(true));
2777 if (state_test(STATE_FREEZINGTREE
)) {
2778 state_clear(STATE_FREEZINGTREE
); // actually, this may get set again by next context?
2779 --num_freezing_trees
;
2783 mds_authority_t auth
;
2784 bool was_subtree
= is_subtree_root();
2786 auth
= get_dir_auth();
2788 // temporarily prevent parent subtree from becoming frozen.
2789 inode
->auth_pin(this);
2790 // create new subtree
2794 assert(auth
.first
>= 0);
2795 assert(auth
.second
== CDIR_AUTH_UNKNOWN
);
2796 auth
.second
= auth
.first
;
2797 inode
->mdcache
->adjust_subtree_auth(this, auth
);
2799 inode
->auth_unpin(this);
2802 state_set(STATE_FROZENTREE
);
2807 void CDir::unfreeze_tree()
2809 dout(10) << "unfreeze_tree " << *this << dendl
;
2811 if (state_test(STATE_FROZENTREE
)) {
2812 // frozen. unfreeze.
2813 state_clear(STATE_FROZENTREE
);
2820 assert(is_subtree_root());
2821 // for debug purpose, caller should ensure 'dir_auth.second == dir_auth.first'
2822 mds_authority_t auth
= get_dir_auth();
2823 assert(auth
.first
>= 0);
2824 assert(auth
.second
== auth
.first
);
2825 auth
.second
= CDIR_AUTH_UNKNOWN
;
2826 inode
->mdcache
->adjust_subtree_auth(this, auth
);
2830 finish_waiting(WAIT_UNFREEZE
);
2832 finish_waiting(WAIT_FROZEN
, -1);
2834 // freezing. stop it.
2835 assert(state_test(STATE_FREEZINGTREE
));
2836 state_clear(STATE_FREEZINGTREE
);
2837 --num_freezing_trees
;
2840 finish_waiting(WAIT_UNFREEZE
);
2844 bool CDir::is_freezing_tree() const
2846 if (num_freezing_trees
== 0)
2848 const CDir
*dir
= this;
2850 if (dir
->is_freezing_tree_root()) return true;
2851 if (dir
->is_subtree_root()) return false;
2852 if (dir
->inode
->parent
)
2853 dir
= dir
->inode
->parent
->dir
;
2855 return false; // root on replica
2859 bool CDir::is_frozen_tree() const
2861 if (num_frozen_trees
== 0)
2863 const CDir
*dir
= this;
2865 if (dir
->is_frozen_tree_root()) return true;
2866 if (dir
->is_subtree_root()) return false;
2867 if (dir
->inode
->parent
)
2868 dir
= dir
->inode
->parent
->dir
;
2870 return false; // root on replica
2874 CDir
*CDir::get_frozen_tree_root()
2876 assert(is_frozen());
2879 if (dir
->is_frozen_tree_root())
2881 if (dir
->inode
->parent
)
2882 dir
= dir
->inode
->parent
->dir
;
2888 class C_Dir_AuthUnpin
: public CDirContext
{
2890 explicit C_Dir_AuthUnpin(CDir
*d
) : CDirContext(d
) {}
2891 void finish(int r
) override
{
2892 dir
->auth_unpin(dir
->get_inode());
2896 void CDir::maybe_finish_freeze()
2898 if (auth_pins
!= 1 || dir_auth_pins
!= 0)
2901 // we can freeze the _dir_ even with nested pins...
2902 if (state_test(STATE_FREEZINGDIR
)) {
2905 finish_waiting(WAIT_FROZEN
);
2908 if (nested_auth_pins
!= 0)
2911 if (state_test(STATE_FREEZINGTREE
)) {
2912 if (!is_subtree_root() && inode
->is_frozen()) {
2913 dout(10) << "maybe_finish_freeze !subtree root and frozen inode, waiting for unfreeze on " << inode
<< dendl
;
2914 // retake an auth_pin...
2916 // and release it when the parent inode unfreezes
2917 inode
->add_waiter(WAIT_UNFREEZE
, new C_Dir_AuthUnpin(this));
2923 finish_waiting(WAIT_FROZEN
);
2931 bool CDir::freeze_dir()
2933 assert(!is_frozen());
2934 assert(!is_freezing());
2937 if (is_freezeable_dir(true)) {
2942 state_set(STATE_FREEZINGDIR
);
2943 dout(10) << "freeze_dir + wait " << *this << dendl
;
2948 void CDir::_freeze_dir()
2950 dout(10) << "_freeze_dir " << *this << dendl
;
2951 //assert(is_freezeable_dir(true));
2952 // not always true during split because the original fragment may have frozen a while
2953 // ago and we're just now getting around to breaking it up.
2955 state_clear(STATE_FREEZINGDIR
);
2956 state_set(STATE_FROZENDIR
);
2959 if (is_auth() && !is_subtree_root())
2960 inode
->auth_pin(this); // auth_pin for duration of freeze
2964 void CDir::unfreeze_dir()
2966 dout(10) << "unfreeze_dir " << *this << dendl
;
2968 if (state_test(STATE_FROZENDIR
)) {
2969 state_clear(STATE_FROZENDIR
);
2972 // unpin (may => FREEZEABLE) FIXME: is this order good?
2973 if (is_auth() && !is_subtree_root())
2974 inode
->auth_unpin(this);
2976 finish_waiting(WAIT_UNFREEZE
);
2978 finish_waiting(WAIT_FROZEN
, -1);
2980 // still freezing. stop.
2981 assert(state_test(STATE_FREEZINGDIR
));
2982 state_clear(STATE_FREEZINGDIR
);
2985 finish_waiting(WAIT_UNFREEZE
);
2990 * Slightly less complete than operator<<, because this is intended
2991 * for identifying a directory and its state rather than for dumping
2994 void CDir::dump(Formatter
*f
) const
2998 f
->dump_stream("path") << get_path();
3000 f
->dump_stream("dirfrag") << dirfrag();
3001 f
->dump_int("snapid_first", first
);
3003 f
->dump_stream("projected_version") << get_projected_version();
3004 f
->dump_stream("version") << get_version();
3005 f
->dump_stream("committing_version") << get_committing_version();
3006 f
->dump_stream("committed_version") << get_committed_version();
3008 f
->dump_bool("is_rep", is_rep());
3010 if (get_dir_auth() != CDIR_AUTH_DEFAULT
) {
3011 if (get_dir_auth().second
== CDIR_AUTH_UNKNOWN
) {
3012 f
->dump_stream("dir_auth") << get_dir_auth().first
;
3014 f
->dump_stream("dir_auth") << get_dir_auth();
3017 f
->dump_string("dir_auth", "");
3020 f
->open_array_section("states");
3021 MDSCacheObject::dump_states(f
);
3022 if (state_test(CDir::STATE_COMPLETE
)) f
->dump_string("state", "complete");
3023 if (state_test(CDir::STATE_FREEZINGTREE
)) f
->dump_string("state", "freezingtree");
3024 if (state_test(CDir::STATE_FROZENTREE
)) f
->dump_string("state", "frozentree");
3025 if (state_test(CDir::STATE_FROZENDIR
)) f
->dump_string("state", "frozendir");
3026 if (state_test(CDir::STATE_FREEZINGDIR
)) f
->dump_string("state", "freezingdir");
3027 if (state_test(CDir::STATE_EXPORTBOUND
)) f
->dump_string("state", "exportbound");
3028 if (state_test(CDir::STATE_IMPORTBOUND
)) f
->dump_string("state", "importbound");
3029 if (state_test(CDir::STATE_BADFRAG
)) f
->dump_string("state", "badfrag");
3032 MDSCacheObject::dump(f
);
3035 /****** Scrub Stuff *******/
3037 void CDir::scrub_info_create() const
3039 assert(!scrub_infop
);
3041 // break out of const-land to set up implicit initial state
3042 CDir
*me
= const_cast<CDir
*>(this);
3043 fnode_t
*fn
= me
->get_projected_fnode();
3045 std::unique_ptr
<scrub_info_t
> si(new scrub_info_t());
3047 si
->last_recursive
.version
= si
->recursive_start
.version
=
3048 fn
->recursive_scrub_version
;
3049 si
->last_recursive
.time
= si
->recursive_start
.time
=
3050 fn
->recursive_scrub_stamp
;
3052 si
->last_local
.version
= fn
->localized_scrub_version
;
3053 si
->last_local
.time
= fn
->localized_scrub_stamp
;
3055 me
->scrub_infop
.swap(si
);
3058 void CDir::scrub_initialize(const ScrubHeaderRefConst
& header
)
3060 dout(20) << __func__
<< dendl
;
3061 assert(is_complete());
3062 assert(header
!= nullptr);
3064 // FIXME: weird implicit construction, is someone else meant
3065 // to be calling scrub_info_create first?
3067 assert(scrub_infop
&& !scrub_infop
->directory_scrubbing
);
3069 scrub_infop
->recursive_start
.version
= get_projected_version();
3070 scrub_infop
->recursive_start
.time
= ceph_clock_now();
3072 scrub_infop
->directories_to_scrub
.clear();
3073 scrub_infop
->directories_scrubbing
.clear();
3074 scrub_infop
->directories_scrubbed
.clear();
3075 scrub_infop
->others_to_scrub
.clear();
3076 scrub_infop
->others_scrubbing
.clear();
3077 scrub_infop
->others_scrubbed
.clear();
3079 for (map_t::iterator i
= items
.begin();
3082 // TODO: handle snapshot scrubbing
3083 if (i
->first
.snapid
!= CEPH_NOSNAP
)
3086 CDentry::linkage_t
*dnl
= i
->second
->get_projected_linkage();
3087 if (dnl
->is_primary()) {
3088 if (dnl
->get_inode()->is_dir())
3089 scrub_infop
->directories_to_scrub
.insert(i
->first
);
3091 scrub_infop
->others_to_scrub
.insert(i
->first
);
3092 } else if (dnl
->is_remote()) {
3093 // TODO: check remote linkage
3096 scrub_infop
->directory_scrubbing
= true;
3097 scrub_infop
->header
= header
;
3100 void CDir::scrub_finished()
3102 dout(20) << __func__
<< dendl
;
3103 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3105 assert(scrub_infop
->directories_to_scrub
.empty());
3106 assert(scrub_infop
->directories_scrubbing
.empty());
3107 scrub_infop
->directories_scrubbed
.clear();
3108 assert(scrub_infop
->others_to_scrub
.empty());
3109 assert(scrub_infop
->others_scrubbing
.empty());
3110 scrub_infop
->others_scrubbed
.clear();
3111 scrub_infop
->directory_scrubbing
= false;
3113 scrub_infop
->last_recursive
= scrub_infop
->recursive_start
;
3114 scrub_infop
->last_scrub_dirty
= true;
3117 int CDir::_next_dentry_on_set(set
<dentry_key_t
>& dns
, bool missing_okay
,
3118 MDSInternalContext
*cb
, CDentry
**dnout
)
3123 while (!dns
.empty()) {
3124 set
<dentry_key_t
>::iterator front
= dns
.begin();
3126 dn
= lookup(dnkey
.name
);
3128 if (!is_complete() &&
3129 (!has_bloom() || is_in_bloom(dnkey
.name
))) {
3130 // need to re-read this dirfrag
3136 dout(15) << " we no longer have directory dentry "
3137 << dnkey
.name
<< ", assuming it got renamed" << dendl
;
3141 dout(5) << " we lost dentry " << dnkey
.name
3142 << ", bailing out because that's impossible!" << dendl
;
3146 // okay, we got a dentry
3149 if (dn
->get_projected_version() < scrub_infop
->last_recursive
.version
&&
3150 !(scrub_infop
->header
->get_force())) {
3151 dout(15) << " skip dentry " << dnkey
.name
3152 << ", no change since last scrub" << dendl
;
3163 int CDir::scrub_dentry_next(MDSInternalContext
*cb
, CDentry
**dnout
)
3165 dout(20) << __func__
<< dendl
;
3166 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3168 dout(20) << "trying to scrub directories underneath us" << dendl
;
3169 int rval
= _next_dentry_on_set(scrub_infop
->directories_to_scrub
, true,
3172 dout(20) << __func__
<< " inserted to directories scrubbing: "
3174 scrub_infop
->directories_scrubbing
.insert((*dnout
)->key());
3175 } else if (rval
== EAGAIN
) {
3176 // we don't need to do anything else
3177 } else { // we emptied out the directory scrub set
3178 assert(rval
== ENOENT
);
3179 dout(20) << "no directories left, moving on to other kinds of dentries"
3182 rval
= _next_dentry_on_set(scrub_infop
->others_to_scrub
, false, cb
, dnout
);
3184 dout(20) << __func__
<< " inserted to others scrubbing: "
3186 scrub_infop
->others_scrubbing
.insert((*dnout
)->key());
3189 dout(20) << " returning " << rval
<< " with dn=" << *dnout
<< dendl
;
3193 void CDir::scrub_dentries_scrubbing(list
<CDentry
*> *out_dentries
)
3195 dout(20) << __func__
<< dendl
;
3196 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3198 for (set
<dentry_key_t
>::iterator i
=
3199 scrub_infop
->directories_scrubbing
.begin();
3200 i
!= scrub_infop
->directories_scrubbing
.end();
3202 CDentry
*d
= lookup(i
->name
, i
->snapid
);
3204 out_dentries
->push_back(d
);
3206 for (set
<dentry_key_t
>::iterator i
= scrub_infop
->others_scrubbing
.begin();
3207 i
!= scrub_infop
->others_scrubbing
.end();
3209 CDentry
*d
= lookup(i
->name
, i
->snapid
);
3211 out_dentries
->push_back(d
);
3215 void CDir::scrub_dentry_finished(CDentry
*dn
)
3217 dout(20) << __func__
<< " on dn " << *dn
<< dendl
;
3218 assert(scrub_infop
&& scrub_infop
->directory_scrubbing
);
3219 dentry_key_t dn_key
= dn
->key();
3220 if (scrub_infop
->directories_scrubbing
.erase(dn_key
)) {
3221 scrub_infop
->directories_scrubbed
.insert(dn_key
);
3223 assert(scrub_infop
->others_scrubbing
.count(dn_key
));
3224 scrub_infop
->others_scrubbing
.erase(dn_key
);
3225 scrub_infop
->others_scrubbed
.insert(dn_key
);
3229 void CDir::scrub_maybe_delete_info()
3232 !scrub_infop
->directory_scrubbing
&&
3233 !scrub_infop
->need_scrub_local
&&
3234 !scrub_infop
->last_scrub_dirty
&&
3235 !scrub_infop
->pending_scrub_error
&&
3236 scrub_infop
->dirty_scrub_stamps
.empty()) {
3237 scrub_infop
.reset();
3241 bool CDir::scrub_local()
3243 assert(is_complete());
3244 bool rval
= check_rstats(true);
3248 scrub_infop
->last_local
.time
= ceph_clock_now();
3249 scrub_infop
->last_local
.version
= get_projected_version();
3250 scrub_infop
->pending_scrub_error
= false;
3251 scrub_infop
->last_scrub_dirty
= true;
3253 scrub_infop
->pending_scrub_error
= true;
3254 if (scrub_infop
->header
->get_repair())
3255 cache
->repair_dirfrag_stats(this);
3260 std::string
CDir::get_path() const
3263 get_inode()->make_path_string(path
, true);
3267 bool CDir::should_split_fast() const
3269 // Max size a fragment can be before trigger fast splitting
3270 int fast_limit
= g_conf
->mds_bal_split_size
* g_conf
->mds_bal_fragment_fast_factor
;
3272 // Fast path: the sum of accounted size and null dentries does not
3273 // exceed threshold: we definitely are not over it.
3274 if (get_frag_size() + get_num_head_null() <= fast_limit
) {
3278 // Fast path: the accounted size of the frag exceeds threshold: we
3279 // definitely are over it
3280 if (get_frag_size() > fast_limit
) {
3284 int64_t effective_size
= 0;
3286 for (const auto &p
: items
) {
3287 const CDentry
*dn
= p
.second
;
3288 if (!dn
->get_projected_linkage()->is_null()) {
3293 return effective_size
> fast_limit
;
3296 MEMPOOL_DEFINE_OBJECT_FACTORY(CDir
, co_dir
, mds_co
);