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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> | |
7 | * | |
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. | |
12 | * | |
13 | */ | |
14 | ||
11fdf7f2 | 15 | #include <string_view> |
f67539c2 | 16 | #include <algorithm> |
7c673cae FG |
17 | |
18 | #include "include/types.h" | |
19 | ||
20 | #include "CDir.h" | |
21 | #include "CDentry.h" | |
22 | #include "CInode.h" | |
23 | #include "Mutation.h" | |
24 | ||
25 | #include "MDSMap.h" | |
26 | #include "MDSRank.h" | |
27 | #include "MDCache.h" | |
28 | #include "Locker.h" | |
29 | #include "MDLog.h" | |
30 | #include "LogSegment.h" | |
522d829b | 31 | #include "MDBalancer.h" |
7c673cae FG |
32 | |
33 | #include "common/bloom_filter.hpp" | |
34 | #include "include/Context.h" | |
35 | #include "common/Clock.h" | |
36 | ||
37 | #include "osdc/Objecter.h" | |
38 | ||
39 | #include "common/config.h" | |
11fdf7f2 | 40 | #include "include/ceph_assert.h" |
7c673cae FG |
41 | #include "include/compat.h" |
42 | ||
43 | #define dout_context g_ceph_context | |
44 | #define dout_subsys ceph_subsys_mds | |
45 | #undef dout_prefix | |
f67539c2 | 46 | #define dout_prefix *_dout << "mds." << mdcache->mds->get_nodeid() << ".cache.dir(" << this->dirfrag() << ") " |
7c673cae FG |
47 | |
48 | int CDir::num_frozen_trees = 0; | |
49 | int CDir::num_freezing_trees = 0; | |
50 | ||
f67539c2 TL |
51 | CDir::fnode_const_ptr CDir::empty_fnode = CDir::allocate_fnode(); |
52 | ||
11fdf7f2 | 53 | class CDirContext : public MDSContext |
7c673cae FG |
54 | { |
55 | protected: | |
56 | CDir *dir; | |
f67539c2 | 57 | MDSRank* get_mds() override {return dir->mdcache->mds;} |
7c673cae FG |
58 | |
59 | public: | |
60 | explicit CDirContext(CDir *d) : dir(d) { | |
11fdf7f2 | 61 | ceph_assert(dir != NULL); |
7c673cae FG |
62 | } |
63 | }; | |
64 | ||
65 | ||
66 | class CDirIOContext : public MDSIOContextBase | |
67 | { | |
68 | protected: | |
69 | CDir *dir; | |
f67539c2 | 70 | MDSRank* get_mds() override {return dir->mdcache->mds;} |
7c673cae FG |
71 | |
72 | public: | |
73 | explicit CDirIOContext(CDir *d) : dir(d) { | |
11fdf7f2 | 74 | ceph_assert(dir != NULL); |
7c673cae FG |
75 | } |
76 | }; | |
77 | ||
78 | ||
79 | // PINS | |
80 | //int cdir_pins[CDIR_NUM_PINS] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0 }; | |
81 | ||
82 | ||
83 | ostream& operator<<(ostream& out, const CDir& dir) | |
84 | { | |
85 | out << "[dir " << dir.dirfrag() << " " << dir.get_path() << "/" | |
86 | << " [" << dir.first << ",head]"; | |
87 | if (dir.is_auth()) { | |
88 | out << " auth"; | |
89 | if (dir.is_replicated()) | |
90 | out << dir.get_replicas(); | |
91 | ||
92 | if (dir.is_projected()) | |
93 | out << " pv=" << dir.get_projected_version(); | |
94 | out << " v=" << dir.get_version(); | |
95 | out << " cv=" << dir.get_committing_version(); | |
96 | out << "/" << dir.get_committed_version(); | |
97 | } else { | |
98 | mds_authority_t a = dir.authority(); | |
99 | out << " rep@" << a.first; | |
100 | if (a.second != CDIR_AUTH_UNKNOWN) | |
101 | out << "," << a.second; | |
102 | out << "." << dir.get_replica_nonce(); | |
103 | } | |
104 | ||
105 | if (dir.is_rep()) out << " REP"; | |
106 | ||
107 | if (dir.get_dir_auth() != CDIR_AUTH_DEFAULT) { | |
108 | if (dir.get_dir_auth().second == CDIR_AUTH_UNKNOWN) | |
109 | out << " dir_auth=" << dir.get_dir_auth().first; | |
110 | else | |
111 | out << " dir_auth=" << dir.get_dir_auth(); | |
112 | } | |
113 | ||
11fdf7f2 | 114 | if (dir.get_auth_pins() || dir.get_dir_auth_pins()) { |
7c673cae | 115 | out << " ap=" << dir.get_auth_pins() |
11fdf7f2 TL |
116 | << "+" << dir.get_dir_auth_pins(); |
117 | #ifdef MDS_AUTHPIN_SET | |
118 | dir.print_authpin_set(out); | |
119 | #endif | |
120 | } | |
7c673cae FG |
121 | |
122 | out << " state=" << dir.get_state(); | |
123 | if (dir.state_test(CDir::STATE_COMPLETE)) out << "|complete"; | |
124 | if (dir.state_test(CDir::STATE_FREEZINGTREE)) out << "|freezingtree"; | |
125 | if (dir.state_test(CDir::STATE_FROZENTREE)) out << "|frozentree"; | |
126 | if (dir.state_test(CDir::STATE_AUXSUBTREE)) out << "|auxsubtree"; | |
7c673cae FG |
127 | if (dir.state_test(CDir::STATE_FROZENDIR)) out << "|frozendir"; |
128 | if (dir.state_test(CDir::STATE_FREEZINGDIR)) out << "|freezingdir"; | |
129 | if (dir.state_test(CDir::STATE_EXPORTBOUND)) out << "|exportbound"; | |
130 | if (dir.state_test(CDir::STATE_IMPORTBOUND)) out << "|importbound"; | |
131 | if (dir.state_test(CDir::STATE_BADFRAG)) out << "|badfrag"; | |
132 | if (dir.state_test(CDir::STATE_FRAGMENTING)) out << "|fragmenting"; | |
11fdf7f2 TL |
133 | if (dir.state_test(CDir::STATE_CREATING)) out << "|creating"; |
134 | if (dir.state_test(CDir::STATE_COMMITTING)) out << "|committing"; | |
135 | if (dir.state_test(CDir::STATE_FETCHING)) out << "|fetching"; | |
136 | if (dir.state_test(CDir::STATE_EXPORTING)) out << "|exporting"; | |
137 | if (dir.state_test(CDir::STATE_IMPORTING)) out << "|importing"; | |
138 | if (dir.state_test(CDir::STATE_STICKY)) out << "|sticky"; | |
139 | if (dir.state_test(CDir::STATE_DNPINNEDFRAG)) out << "|dnpinnedfrag"; | |
140 | if (dir.state_test(CDir::STATE_ASSIMRSTAT)) out << "|assimrstat"; | |
7c673cae FG |
141 | |
142 | // fragstat | |
f67539c2 TL |
143 | out << " " << dir.get_fnode()->fragstat; |
144 | if (!(dir.get_fnode()->fragstat == dir.get_fnode()->accounted_fragstat)) | |
145 | out << "/" << dir.get_fnode()->accounted_fragstat; | |
11fdf7f2 | 146 | if (g_conf()->mds_debug_scatterstat && dir.is_projected()) { |
f67539c2 | 147 | const auto& pf = dir.get_projected_fnode(); |
7c673cae FG |
148 | out << "->" << pf->fragstat; |
149 | if (!(pf->fragstat == pf->accounted_fragstat)) | |
150 | out << "/" << pf->accounted_fragstat; | |
151 | } | |
152 | ||
153 | // rstat | |
f67539c2 TL |
154 | out << " " << dir.get_fnode()->rstat; |
155 | if (!(dir.get_fnode()->rstat == dir.get_fnode()->accounted_rstat)) | |
156 | out << "/" << dir.get_fnode()->accounted_rstat; | |
11fdf7f2 | 157 | if (g_conf()->mds_debug_scatterstat && dir.is_projected()) { |
f67539c2 | 158 | const auto& pf = dir.get_projected_fnode(); |
7c673cae FG |
159 | out << "->" << pf->rstat; |
160 | if (!(pf->rstat == pf->accounted_rstat)) | |
161 | out << "/" << pf->accounted_rstat; | |
162 | } | |
163 | ||
164 | out << " hs=" << dir.get_num_head_items() << "+" << dir.get_num_head_null(); | |
165 | out << ",ss=" << dir.get_num_snap_items() << "+" << dir.get_num_snap_null(); | |
166 | if (dir.get_num_dirty()) | |
167 | out << " dirty=" << dir.get_num_dirty(); | |
168 | ||
169 | if (dir.get_num_ref()) { | |
170 | out << " |"; | |
171 | dir.print_pin_set(out); | |
172 | } | |
173 | ||
174 | out << " " << &dir; | |
175 | return out << "]"; | |
176 | } | |
177 | ||
178 | ||
179 | void CDir::print(ostream& out) | |
180 | { | |
181 | out << *this; | |
182 | } | |
183 | ||
184 | ||
185 | ||
186 | ||
187 | ostream& CDir::print_db_line_prefix(ostream& out) | |
188 | { | |
f67539c2 | 189 | return out << ceph_clock_now() << " mds." << mdcache->mds->get_nodeid() << ".cache.dir(" << this->dirfrag() << ") "; |
7c673cae FG |
190 | } |
191 | ||
192 | ||
193 | ||
194 | // ------------------------------------------------------------------- | |
195 | // CDir | |
196 | ||
f67539c2 TL |
197 | CDir::CDir(CInode *in, frag_t fg, MDCache *mdc, bool auth) : |
198 | mdcache(mdc), inode(in), frag(fg), | |
7c673cae | 199 | dirty_rstat_inodes(member_offset(CInode, dirty_rstat_item)), |
b32b8144 FG |
200 | dirty_dentries(member_offset(CDentry, item_dir_dirty)), |
201 | item_dirty(this), item_new(this), | |
9f95a23c TL |
202 | lock_caches_with_auth_pins(member_offset(MDLockCache::DirItem, item_dir)), |
203 | freezing_inodes(member_offset(CInode, item_freezing_inode)), | |
7c673cae | 204 | dir_rep(REP_NONE), |
f67539c2 TL |
205 | pop_me(mdc->decayrate), |
206 | pop_nested(mdc->decayrate), | |
207 | pop_auth_subtree(mdc->decayrate), | |
208 | pop_auth_subtree_nested(mdc->decayrate), | |
209 | pop_spread(mdc->decayrate), | |
28e407b8 | 210 | pop_lru_subdirs(member_offset(CInode, item_pop_lru)), |
7c673cae FG |
211 | dir_auth(CDIR_AUTH_DEFAULT) |
212 | { | |
7c673cae | 213 | // auth |
11fdf7f2 | 214 | ceph_assert(in->is_dir()); |
f67539c2 TL |
215 | if (auth) |
216 | state_set(STATE_AUTH); | |
7c673cae FG |
217 | } |
218 | ||
219 | /** | |
220 | * Check the recursive statistics on size for consistency. | |
221 | * If mds_debug_scatterstat is enabled, assert for correctness, | |
222 | * otherwise just print out the mismatch and continue. | |
223 | */ | |
224 | bool CDir::check_rstats(bool scrub) | |
225 | { | |
11fdf7f2 | 226 | if (!g_conf()->mds_debug_scatterstat && !scrub) |
7c673cae FG |
227 | return true; |
228 | ||
229 | dout(25) << "check_rstats on " << this << dendl; | |
230 | if (!is_complete() || !is_auth() || is_frozen()) { | |
92f5a8d4 TL |
231 | dout(3) << "check_rstats " << (scrub ? "(scrub) " : "") |
232 | << "bailing out -- incomplete or non-auth or frozen dir on " | |
233 | << *this << dendl; | |
234 | return !scrub; | |
7c673cae FG |
235 | } |
236 | ||
237 | frag_info_t frag_info; | |
238 | nest_info_t nest_info; | |
94b18763 | 239 | for (auto i = items.begin(); i != items.end(); ++i) { |
7c673cae FG |
240 | if (i->second->last != CEPH_NOSNAP) |
241 | continue; | |
242 | CDentry::linkage_t *dnl = i->second->get_linkage(); | |
243 | if (dnl->is_primary()) { | |
244 | CInode *in = dnl->get_inode(); | |
f67539c2 | 245 | nest_info.add(in->get_inode()->accounted_rstat); |
7c673cae FG |
246 | if (in->is_dir()) |
247 | frag_info.nsubdirs++; | |
248 | else | |
249 | frag_info.nfiles++; | |
250 | } else if (dnl->is_remote()) | |
251 | frag_info.nfiles++; | |
252 | } | |
253 | ||
254 | bool good = true; | |
255 | // fragstat | |
f67539c2 | 256 | if(!frag_info.same_sums(fnode->fragstat)) { |
7c673cae FG |
257 | dout(1) << "mismatch between head items and fnode.fragstat! printing dentries" << dendl; |
258 | dout(1) << "get_num_head_items() = " << get_num_head_items() | |
f67539c2 TL |
259 | << "; fnode.fragstat.nfiles=" << fnode->fragstat.nfiles |
260 | << " fnode.fragstat.nsubdirs=" << fnode->fragstat.nsubdirs << dendl; | |
7c673cae FG |
261 | good = false; |
262 | } else { | |
263 | dout(20) << "get_num_head_items() = " << get_num_head_items() | |
f67539c2 TL |
264 | << "; fnode.fragstat.nfiles=" << fnode->fragstat.nfiles |
265 | << " fnode.fragstat.nsubdirs=" << fnode->fragstat.nsubdirs << dendl; | |
7c673cae FG |
266 | } |
267 | ||
268 | // rstat | |
f67539c2 | 269 | if (!nest_info.same_sums(fnode->rstat)) { |
7c673cae | 270 | dout(1) << "mismatch between child accounted_rstats and my rstats!" << dendl; |
f67539c2 TL |
271 | dout(1) << "total of child dentries: " << nest_info << dendl; |
272 | dout(1) << "my rstats: " << fnode->rstat << dendl; | |
7c673cae FG |
273 | good = false; |
274 | } else { | |
f67539c2 TL |
275 | dout(20) << "total of child dentries: " << nest_info << dendl; |
276 | dout(20) << "my rstats: " << fnode->rstat << dendl; | |
7c673cae FG |
277 | } |
278 | ||
279 | if (!good) { | |
280 | if (!scrub) { | |
94b18763 | 281 | for (auto i = items.begin(); i != items.end(); ++i) { |
7c673cae FG |
282 | CDentry *dn = i->second; |
283 | if (dn->get_linkage()->is_primary()) { | |
284 | CInode *in = dn->get_linkage()->inode; | |
f67539c2 | 285 | dout(1) << *dn << " rstat " << in->get_inode()->accounted_rstat << dendl; |
7c673cae FG |
286 | } else { |
287 | dout(1) << *dn << dendl; | |
288 | } | |
289 | } | |
290 | ||
f67539c2 TL |
291 | ceph_assert(frag_info.nfiles == fnode->fragstat.nfiles); |
292 | ceph_assert(frag_info.nsubdirs == fnode->fragstat.nsubdirs); | |
293 | ceph_assert(nest_info.rbytes == fnode->rstat.rbytes); | |
294 | ceph_assert(nest_info.rfiles == fnode->rstat.rfiles); | |
295 | ceph_assert(nest_info.rsubdirs == fnode->rstat.rsubdirs); | |
7c673cae FG |
296 | } |
297 | } | |
298 | dout(10) << "check_rstats complete on " << this << dendl; | |
299 | return good; | |
300 | } | |
301 | ||
11fdf7f2 TL |
302 | void CDir::adjust_num_inodes_with_caps(int d) |
303 | { | |
304 | // FIXME: smarter way to decide if adding 'this' to open file table | |
305 | if (num_inodes_with_caps == 0 && d > 0) | |
f67539c2 | 306 | mdcache->open_file_table.add_dirfrag(this); |
11fdf7f2 | 307 | else if (num_inodes_with_caps > 0 && num_inodes_with_caps == -d) |
f67539c2 | 308 | mdcache->open_file_table.remove_dirfrag(this); |
11fdf7f2 TL |
309 | |
310 | num_inodes_with_caps += d; | |
311 | ceph_assert(num_inodes_with_caps >= 0); | |
312 | } | |
313 | ||
314 | CDentry *CDir::lookup(std::string_view name, snapid_t snap) | |
7c673cae FG |
315 | { |
316 | dout(20) << "lookup (" << snap << ", '" << name << "')" << dendl; | |
94b18763 | 317 | auto iter = items.lower_bound(dentry_key_t(snap, name, inode->hash_dentry_name(name))); |
7c673cae FG |
318 | if (iter == items.end()) |
319 | return 0; | |
94b18763 | 320 | if (iter->second->get_name() == name && |
7c673cae FG |
321 | iter->second->first <= snap && |
322 | iter->second->last >= snap) { | |
323 | dout(20) << " hit -> " << iter->first << dendl; | |
324 | return iter->second; | |
325 | } | |
326 | dout(20) << " miss -> " << iter->first << dendl; | |
327 | return 0; | |
328 | } | |
329 | ||
11fdf7f2 TL |
330 | CDentry *CDir::lookup_exact_snap(std::string_view name, snapid_t last) { |
331 | dout(20) << __func__ << " (" << last << ", '" << name << "')" << dendl; | |
94b18763 | 332 | auto p = items.find(dentry_key_t(last, name, inode->hash_dentry_name(name))); |
7c673cae FG |
333 | if (p == items.end()) |
334 | return NULL; | |
335 | return p->second; | |
336 | } | |
337 | ||
338 | /*** | |
339 | * linking fun | |
340 | */ | |
341 | ||
11fdf7f2 | 342 | CDentry* CDir::add_null_dentry(std::string_view dname, |
7c673cae FG |
343 | snapid_t first, snapid_t last) |
344 | { | |
345 | // foreign | |
11fdf7f2 | 346 | ceph_assert(lookup_exact_snap(dname, last) == 0); |
7c673cae FG |
347 | |
348 | // create dentry | |
f67539c2 | 349 | CDentry* dn = new CDentry(dname, inode->hash_dentry_name(dname), "", first, last); |
7c673cae FG |
350 | if (is_auth()) |
351 | dn->state_set(CDentry::STATE_AUTH); | |
31f18b77 | 352 | |
f67539c2 | 353 | mdcache->bottom_lru.lru_insert_mid(dn); |
31f18b77 | 354 | dn->state_set(CDentry::STATE_BOTTOMLRU); |
7c673cae FG |
355 | |
356 | dn->dir = this; | |
357 | dn->version = get_projected_version(); | |
358 | ||
359 | // add to dir | |
11fdf7f2 | 360 | ceph_assert(items.count(dn->key()) == 0); |
94b18763 | 361 | //assert(null_items.count(dn->get_name()) == 0); |
7c673cae FG |
362 | |
363 | items[dn->key()] = dn; | |
364 | if (last == CEPH_NOSNAP) | |
365 | num_head_null++; | |
366 | else | |
367 | num_snap_null++; | |
368 | ||
369 | if (state_test(CDir::STATE_DNPINNEDFRAG)) { | |
370 | dn->get(CDentry::PIN_FRAGMENTING); | |
371 | dn->state_set(CDentry::STATE_FRAGMENTING); | |
372 | } | |
373 | ||
11fdf7f2 | 374 | dout(12) << __func__ << " " << *dn << dendl; |
7c673cae FG |
375 | |
376 | // pin? | |
377 | if (get_num_any() == 1) | |
378 | get(PIN_CHILD); | |
379 | ||
11fdf7f2 | 380 | ceph_assert(get_num_any() == items.size()); |
7c673cae FG |
381 | return dn; |
382 | } | |
383 | ||
384 | ||
11fdf7f2 | 385 | CDentry* CDir::add_primary_dentry(std::string_view dname, CInode *in, |
f67539c2 | 386 | mempool::mds_co::string alternate_name, |
7c673cae FG |
387 | snapid_t first, snapid_t last) |
388 | { | |
389 | // primary | |
11fdf7f2 | 390 | ceph_assert(lookup_exact_snap(dname, last) == 0); |
7c673cae FG |
391 | |
392 | // create dentry | |
f67539c2 | 393 | CDentry* dn = new CDentry(dname, inode->hash_dentry_name(dname), std::move(alternate_name), first, last); |
7c673cae FG |
394 | if (is_auth()) |
395 | dn->state_set(CDentry::STATE_AUTH); | |
31f18b77 | 396 | if (is_auth() || !inode->is_stray()) { |
f67539c2 | 397 | mdcache->lru.lru_insert_mid(dn); |
31f18b77 | 398 | } else { |
f67539c2 | 399 | mdcache->bottom_lru.lru_insert_mid(dn); |
31f18b77 FG |
400 | dn->state_set(CDentry::STATE_BOTTOMLRU); |
401 | } | |
7c673cae FG |
402 | |
403 | dn->dir = this; | |
404 | dn->version = get_projected_version(); | |
405 | ||
406 | // add to dir | |
11fdf7f2 | 407 | ceph_assert(items.count(dn->key()) == 0); |
94b18763 | 408 | //assert(null_items.count(dn->get_name()) == 0); |
7c673cae FG |
409 | |
410 | items[dn->key()] = dn; | |
411 | ||
412 | dn->get_linkage()->inode = in; | |
7c673cae FG |
413 | |
414 | link_inode_work(dn, in); | |
415 | ||
416 | if (dn->last == CEPH_NOSNAP) | |
417 | num_head_items++; | |
418 | else | |
419 | num_snap_items++; | |
420 | ||
421 | if (state_test(CDir::STATE_DNPINNEDFRAG)) { | |
422 | dn->get(CDentry::PIN_FRAGMENTING); | |
423 | dn->state_set(CDentry::STATE_FRAGMENTING); | |
424 | } | |
425 | ||
11fdf7f2 | 426 | dout(12) << __func__ << " " << *dn << dendl; |
7c673cae FG |
427 | |
428 | // pin? | |
429 | if (get_num_any() == 1) | |
430 | get(PIN_CHILD); | |
11fdf7f2 | 431 | ceph_assert(get_num_any() == items.size()); |
7c673cae FG |
432 | return dn; |
433 | } | |
434 | ||
11fdf7f2 | 435 | CDentry* CDir::add_remote_dentry(std::string_view dname, inodeno_t ino, unsigned char d_type, |
f67539c2 | 436 | mempool::mds_co::string alternate_name, |
7c673cae FG |
437 | snapid_t first, snapid_t last) |
438 | { | |
439 | // foreign | |
11fdf7f2 | 440 | ceph_assert(lookup_exact_snap(dname, last) == 0); |
7c673cae FG |
441 | |
442 | // create dentry | |
f67539c2 | 443 | CDentry* dn = new CDentry(dname, inode->hash_dentry_name(dname), std::move(alternate_name), ino, d_type, first, last); |
7c673cae FG |
444 | if (is_auth()) |
445 | dn->state_set(CDentry::STATE_AUTH); | |
f67539c2 | 446 | mdcache->lru.lru_insert_mid(dn); |
7c673cae FG |
447 | |
448 | dn->dir = this; | |
449 | dn->version = get_projected_version(); | |
450 | ||
451 | // add to dir | |
11fdf7f2 | 452 | ceph_assert(items.count(dn->key()) == 0); |
94b18763 | 453 | //assert(null_items.count(dn->get_name()) == 0); |
7c673cae FG |
454 | |
455 | items[dn->key()] = dn; | |
456 | if (last == CEPH_NOSNAP) | |
457 | num_head_items++; | |
458 | else | |
459 | num_snap_items++; | |
460 | ||
461 | if (state_test(CDir::STATE_DNPINNEDFRAG)) { | |
462 | dn->get(CDentry::PIN_FRAGMENTING); | |
463 | dn->state_set(CDentry::STATE_FRAGMENTING); | |
464 | } | |
465 | ||
11fdf7f2 | 466 | dout(12) << __func__ << " " << *dn << dendl; |
7c673cae FG |
467 | |
468 | // pin? | |
469 | if (get_num_any() == 1) | |
470 | get(PIN_CHILD); | |
471 | ||
11fdf7f2 | 472 | ceph_assert(get_num_any() == items.size()); |
7c673cae FG |
473 | return dn; |
474 | } | |
475 | ||
476 | ||
477 | ||
478 | void CDir::remove_dentry(CDentry *dn) | |
479 | { | |
11fdf7f2 | 480 | dout(12) << __func__ << " " << *dn << dendl; |
7c673cae FG |
481 | |
482 | // there should be no client leases at this point! | |
11fdf7f2 | 483 | ceph_assert(dn->client_lease_map.empty()); |
7c673cae FG |
484 | |
485 | if (state_test(CDir::STATE_DNPINNEDFRAG)) { | |
486 | dn->put(CDentry::PIN_FRAGMENTING); | |
487 | dn->state_clear(CDentry::STATE_FRAGMENTING); | |
488 | } | |
489 | ||
490 | if (dn->get_linkage()->is_null()) { | |
491 | if (dn->last == CEPH_NOSNAP) | |
492 | num_head_null--; | |
493 | else | |
494 | num_snap_null--; | |
495 | } else { | |
496 | if (dn->last == CEPH_NOSNAP) | |
497 | num_head_items--; | |
498 | else | |
499 | num_snap_items--; | |
500 | } | |
501 | ||
502 | if (!dn->get_linkage()->is_null()) | |
503 | // detach inode and dentry | |
504 | unlink_inode_work(dn); | |
505 | ||
506 | // remove from list | |
11fdf7f2 | 507 | ceph_assert(items.count(dn->key()) == 1); |
7c673cae FG |
508 | items.erase(dn->key()); |
509 | ||
510 | // clean? | |
511 | if (dn->is_dirty()) | |
512 | dn->mark_clean(); | |
513 | ||
31f18b77 | 514 | if (dn->state_test(CDentry::STATE_BOTTOMLRU)) |
f67539c2 | 515 | mdcache->bottom_lru.lru_remove(dn); |
31f18b77 | 516 | else |
f67539c2 | 517 | mdcache->lru.lru_remove(dn); |
7c673cae FG |
518 | delete dn; |
519 | ||
520 | // unpin? | |
521 | if (get_num_any() == 0) | |
522 | put(PIN_CHILD); | |
11fdf7f2 | 523 | ceph_assert(get_num_any() == items.size()); |
7c673cae FG |
524 | } |
525 | ||
526 | void CDir::link_remote_inode(CDentry *dn, CInode *in) | |
527 | { | |
528 | link_remote_inode(dn, in->ino(), IFTODT(in->get_projected_inode()->mode)); | |
529 | } | |
530 | ||
531 | void CDir::link_remote_inode(CDentry *dn, inodeno_t ino, unsigned char d_type) | |
532 | { | |
11fdf7f2 TL |
533 | dout(12) << __func__ << " " << *dn << " remote " << ino << dendl; |
534 | ceph_assert(dn->get_linkage()->is_null()); | |
7c673cae FG |
535 | |
536 | dn->get_linkage()->set_remote(ino, d_type); | |
537 | ||
31f18b77 | 538 | if (dn->state_test(CDentry::STATE_BOTTOMLRU)) { |
f67539c2 TL |
539 | mdcache->bottom_lru.lru_remove(dn); |
540 | mdcache->lru.lru_insert_mid(dn); | |
31f18b77 FG |
541 | dn->state_clear(CDentry::STATE_BOTTOMLRU); |
542 | } | |
543 | ||
7c673cae FG |
544 | if (dn->last == CEPH_NOSNAP) { |
545 | num_head_items++; | |
546 | num_head_null--; | |
547 | } else { | |
548 | num_snap_items++; | |
549 | num_snap_null--; | |
550 | } | |
11fdf7f2 | 551 | ceph_assert(get_num_any() == items.size()); |
7c673cae FG |
552 | } |
553 | ||
554 | void CDir::link_primary_inode(CDentry *dn, CInode *in) | |
555 | { | |
11fdf7f2 TL |
556 | dout(12) << __func__ << " " << *dn << " " << *in << dendl; |
557 | ceph_assert(dn->get_linkage()->is_null()); | |
7c673cae FG |
558 | |
559 | dn->get_linkage()->inode = in; | |
7c673cae FG |
560 | |
561 | link_inode_work(dn, in); | |
31f18b77 FG |
562 | |
563 | if (dn->state_test(CDentry::STATE_BOTTOMLRU) && | |
564 | (is_auth() || !inode->is_stray())) { | |
f67539c2 TL |
565 | mdcache->bottom_lru.lru_remove(dn); |
566 | mdcache->lru.lru_insert_mid(dn); | |
31f18b77 FG |
567 | dn->state_clear(CDentry::STATE_BOTTOMLRU); |
568 | } | |
7c673cae FG |
569 | |
570 | if (dn->last == CEPH_NOSNAP) { | |
571 | num_head_items++; | |
572 | num_head_null--; | |
573 | } else { | |
574 | num_snap_items++; | |
575 | num_snap_null--; | |
576 | } | |
577 | ||
11fdf7f2 | 578 | ceph_assert(get_num_any() == items.size()); |
7c673cae FG |
579 | } |
580 | ||
581 | void CDir::link_inode_work( CDentry *dn, CInode *in) | |
582 | { | |
11fdf7f2 | 583 | ceph_assert(dn->get_linkage()->get_inode() == in); |
28e407b8 | 584 | in->set_primary_parent(dn); |
7c673cae FG |
585 | |
586 | // set inode version | |
587 | //in->inode.version = dn->get_version(); | |
588 | ||
589 | // pin dentry? | |
590 | if (in->get_num_ref()) | |
591 | dn->get(CDentry::PIN_INODEPIN); | |
11fdf7f2 TL |
592 | |
593 | if (in->state_test(CInode::STATE_TRACKEDBYOFT)) | |
f67539c2 | 594 | mdcache->open_file_table.notify_link(in); |
11fdf7f2 TL |
595 | if (in->is_any_caps()) |
596 | adjust_num_inodes_with_caps(1); | |
7c673cae FG |
597 | |
598 | // adjust auth pin count | |
11fdf7f2 TL |
599 | if (in->auth_pins) |
600 | dn->adjust_nested_auth_pins(in->auth_pins, NULL); | |
7c673cae | 601 | |
9f95a23c TL |
602 | if (in->is_freezing_inode()) |
603 | freezing_inodes.push_back(&in->item_freezing_inode); | |
604 | else if (in->is_frozen_inode() || in->is_frozen_auth_pin()) | |
605 | num_frozen_inodes++; | |
606 | ||
7c673cae FG |
607 | // verify open snaprealm parent |
608 | if (in->snaprealm) | |
609 | in->snaprealm->adjust_parent(); | |
610 | else if (in->is_any_caps()) | |
611 | in->move_to_realm(inode->find_snaprealm()); | |
612 | } | |
613 | ||
31f18b77 | 614 | void CDir::unlink_inode(CDentry *dn, bool adjust_lru) |
7c673cae FG |
615 | { |
616 | if (dn->get_linkage()->is_primary()) { | |
11fdf7f2 | 617 | dout(12) << __func__ << " " << *dn << " " << *dn->get_linkage()->get_inode() << dendl; |
7c673cae | 618 | } else { |
11fdf7f2 | 619 | dout(12) << __func__ << " " << *dn << dendl; |
7c673cae FG |
620 | } |
621 | ||
622 | unlink_inode_work(dn); | |
623 | ||
31f18b77 | 624 | if (adjust_lru && !dn->state_test(CDentry::STATE_BOTTOMLRU)) { |
f67539c2 TL |
625 | mdcache->lru.lru_remove(dn); |
626 | mdcache->bottom_lru.lru_insert_mid(dn); | |
31f18b77 FG |
627 | dn->state_set(CDentry::STATE_BOTTOMLRU); |
628 | } | |
629 | ||
7c673cae FG |
630 | if (dn->last == CEPH_NOSNAP) { |
631 | num_head_items--; | |
632 | num_head_null++; | |
633 | } else { | |
634 | num_snap_items--; | |
635 | num_snap_null++; | |
636 | } | |
11fdf7f2 | 637 | ceph_assert(get_num_any() == items.size()); |
7c673cae FG |
638 | } |
639 | ||
640 | ||
641 | void CDir::try_remove_unlinked_dn(CDentry *dn) | |
642 | { | |
11fdf7f2 TL |
643 | ceph_assert(dn->dir == this); |
644 | ceph_assert(dn->get_linkage()->is_null()); | |
7c673cae FG |
645 | |
646 | // no pins (besides dirty)? | |
647 | if (dn->get_num_ref() != dn->is_dirty()) | |
648 | return; | |
649 | ||
650 | // was the dn new? | |
651 | if (dn->is_new()) { | |
11fdf7f2 | 652 | dout(10) << __func__ << " " << *dn << " in " << *this << dendl; |
7c673cae FG |
653 | if (dn->is_dirty()) |
654 | dn->mark_clean(); | |
655 | remove_dentry(dn); | |
656 | ||
657 | // NOTE: we may not have any more dirty dentries, but the fnode | |
658 | // still changed, so the directory must remain dirty. | |
659 | } | |
660 | } | |
661 | ||
662 | ||
11fdf7f2 | 663 | void CDir::unlink_inode_work(CDentry *dn) |
7c673cae FG |
664 | { |
665 | CInode *in = dn->get_linkage()->get_inode(); | |
666 | ||
667 | if (dn->get_linkage()->is_remote()) { | |
668 | // remote | |
669 | if (in) | |
670 | dn->unlink_remote(dn->get_linkage()); | |
671 | ||
672 | dn->get_linkage()->set_remote(0, 0); | |
673 | } else if (dn->get_linkage()->is_primary()) { | |
674 | // primary | |
675 | // unpin dentry? | |
676 | if (in->get_num_ref()) | |
677 | dn->put(CDentry::PIN_INODEPIN); | |
11fdf7f2 TL |
678 | |
679 | if (in->state_test(CInode::STATE_TRACKEDBYOFT)) | |
f67539c2 | 680 | mdcache->open_file_table.notify_unlink(in); |
11fdf7f2 TL |
681 | if (in->is_any_caps()) |
682 | adjust_num_inodes_with_caps(-1); | |
7c673cae FG |
683 | |
684 | // unlink auth_pin count | |
11fdf7f2 TL |
685 | if (in->auth_pins) |
686 | dn->adjust_nested_auth_pins(-in->auth_pins, nullptr); | |
28e407b8 | 687 | |
9f95a23c TL |
688 | if (in->is_freezing_inode()) |
689 | in->item_freezing_inode.remove_myself(); | |
690 | else if (in->is_frozen_inode() || in->is_frozen_auth_pin()) | |
691 | num_frozen_inodes--; | |
692 | ||
7c673cae FG |
693 | // detach inode |
694 | in->remove_primary_parent(dn); | |
28e407b8 AA |
695 | if (in->is_dir()) |
696 | in->item_pop_lru.remove_myself(); | |
7c673cae FG |
697 | dn->get_linkage()->inode = 0; |
698 | } else { | |
11fdf7f2 | 699 | ceph_assert(!dn->get_linkage()->is_null()); |
7c673cae FG |
700 | } |
701 | } | |
702 | ||
703 | void CDir::add_to_bloom(CDentry *dn) | |
704 | { | |
11fdf7f2 | 705 | ceph_assert(dn->last == CEPH_NOSNAP); |
7c673cae FG |
706 | if (!bloom) { |
707 | /* not create bloom filter for incomplete dir that was added by log replay */ | |
708 | if (!is_complete()) | |
709 | return; | |
710 | ||
711 | /* don't maintain bloom filters in standby replay (saves cycles, and also | |
712 | * avoids need to implement clearing it in EExport for #16924) */ | |
f67539c2 | 713 | if (mdcache->mds->is_standby_replay()) { |
7c673cae FG |
714 | return; |
715 | } | |
716 | ||
717 | unsigned size = get_num_head_items() + get_num_snap_items(); | |
718 | if (size < 100) size = 100; | |
719 | bloom.reset(new bloom_filter(size, 1.0 / size, 0)); | |
720 | } | |
721 | /* This size and false positive probability is completely random.*/ | |
94b18763 | 722 | bloom->insert(dn->get_name().data(), dn->get_name().size()); |
7c673cae FG |
723 | } |
724 | ||
11fdf7f2 | 725 | bool CDir::is_in_bloom(std::string_view name) |
7c673cae FG |
726 | { |
727 | if (!bloom) | |
728 | return false; | |
94b18763 | 729 | return bloom->contains(name.data(), name.size()); |
7c673cae FG |
730 | } |
731 | ||
732 | void CDir::remove_null_dentries() { | |
11fdf7f2 | 733 | dout(12) << __func__ << " " << *this << dendl; |
7c673cae | 734 | |
94b18763 | 735 | auto p = items.begin(); |
7c673cae FG |
736 | while (p != items.end()) { |
737 | CDentry *dn = p->second; | |
738 | ++p; | |
739 | if (dn->get_linkage()->is_null() && !dn->is_projected()) | |
740 | remove_dentry(dn); | |
741 | } | |
742 | ||
11fdf7f2 TL |
743 | ceph_assert(num_snap_null == 0); |
744 | ceph_assert(num_head_null == 0); | |
745 | ceph_assert(get_num_any() == items.size()); | |
7c673cae FG |
746 | } |
747 | ||
748 | /** remove dirty null dentries for deleted directory. the dirfrag will be | |
749 | * deleted soon, so it's safe to not commit dirty dentries. | |
750 | * | |
751 | * This is called when a directory is being deleted, a prerequisite | |
752 | * of which is that its children have been unlinked: we expect to only see | |
753 | * null, unprojected dentries here. | |
754 | */ | |
755 | void CDir::try_remove_dentries_for_stray() | |
756 | { | |
757 | dout(10) << __func__ << dendl; | |
11fdf7f2 | 758 | ceph_assert(get_parent_dir()->inode->is_stray()); |
7c673cae FG |
759 | |
760 | // clear dirty only when the directory was not snapshotted | |
761 | bool clear_dirty = !inode->snaprealm; | |
762 | ||
94b18763 | 763 | auto p = items.begin(); |
7c673cae FG |
764 | while (p != items.end()) { |
765 | CDentry *dn = p->second; | |
766 | ++p; | |
767 | if (dn->last == CEPH_NOSNAP) { | |
11fdf7f2 TL |
768 | ceph_assert(!dn->is_projected()); |
769 | ceph_assert(dn->get_linkage()->is_null()); | |
7c673cae FG |
770 | if (clear_dirty && dn->is_dirty()) |
771 | dn->mark_clean(); | |
772 | // It's OK to remove lease prematurely because we will never link | |
773 | // the dentry to inode again. | |
774 | if (dn->is_any_leases()) | |
f67539c2 | 775 | dn->remove_client_leases(mdcache->mds->locker); |
7c673cae FG |
776 | if (dn->get_num_ref() == 0) |
777 | remove_dentry(dn); | |
778 | } else { | |
11fdf7f2 | 779 | ceph_assert(!dn->is_projected()); |
7c673cae FG |
780 | CDentry::linkage_t *dnl= dn->get_linkage(); |
781 | CInode *in = NULL; | |
782 | if (dnl->is_primary()) { | |
783 | in = dnl->get_inode(); | |
784 | if (clear_dirty && in->is_dirty()) | |
785 | in->mark_clean(); | |
786 | } | |
787 | if (clear_dirty && dn->is_dirty()) | |
788 | dn->mark_clean(); | |
789 | if (dn->get_num_ref() == 0) { | |
790 | remove_dentry(dn); | |
791 | if (in) | |
f67539c2 | 792 | mdcache->remove_inode(in); |
7c673cae FG |
793 | } |
794 | } | |
795 | } | |
796 | ||
797 | if (clear_dirty && is_dirty()) | |
798 | mark_clean(); | |
799 | } | |
800 | ||
7c673cae FG |
801 | bool CDir::try_trim_snap_dentry(CDentry *dn, const set<snapid_t>& snaps) |
802 | { | |
11fdf7f2 | 803 | ceph_assert(dn->last != CEPH_NOSNAP); |
7c673cae FG |
804 | set<snapid_t>::const_iterator p = snaps.lower_bound(dn->first); |
805 | CDentry::linkage_t *dnl= dn->get_linkage(); | |
806 | CInode *in = 0; | |
807 | if (dnl->is_primary()) | |
808 | in = dnl->get_inode(); | |
809 | if ((p == snaps.end() || *p > dn->last) && | |
810 | (dn->get_num_ref() == dn->is_dirty()) && | |
811 | (!in || in->get_num_ref() == in->is_dirty())) { | |
812 | dout(10) << " purging snapped " << *dn << dendl; | |
813 | if (in && in->is_dirty()) | |
814 | in->mark_clean(); | |
815 | remove_dentry(dn); | |
816 | if (in) { | |
817 | dout(10) << " purging snapped " << *in << dendl; | |
f67539c2 | 818 | mdcache->remove_inode(in); |
7c673cae FG |
819 | } |
820 | return true; | |
821 | } | |
822 | return false; | |
823 | } | |
824 | ||
825 | ||
826 | void CDir::purge_stale_snap_data(const set<snapid_t>& snaps) | |
827 | { | |
11fdf7f2 | 828 | dout(10) << __func__ << " " << snaps << dendl; |
7c673cae | 829 | |
94b18763 | 830 | auto p = items.begin(); |
7c673cae FG |
831 | while (p != items.end()) { |
832 | CDentry *dn = p->second; | |
833 | ++p; | |
834 | ||
835 | if (dn->last == CEPH_NOSNAP) | |
836 | continue; | |
837 | ||
838 | try_trim_snap_dentry(dn, snaps); | |
839 | } | |
840 | } | |
841 | ||
842 | ||
843 | /** | |
844 | * steal_dentry -- semi-violently move a dentry from one CDir to another | |
845 | * (*) violently, in that nitems, most pins, etc. are not correctly maintained | |
846 | * on the old CDir corpse; must call finish_old_fragment() when finished. | |
847 | */ | |
848 | void CDir::steal_dentry(CDentry *dn) | |
849 | { | |
11fdf7f2 | 850 | dout(15) << __func__ << " " << *dn << dendl; |
7c673cae FG |
851 | |
852 | items[dn->key()] = dn; | |
853 | ||
854 | dn->dir->items.erase(dn->key()); | |
855 | if (dn->dir->items.empty()) | |
856 | dn->dir->put(PIN_CHILD); | |
857 | ||
858 | if (get_num_any() == 0) | |
859 | get(PIN_CHILD); | |
860 | if (dn->get_linkage()->is_null()) { | |
861 | if (dn->last == CEPH_NOSNAP) | |
862 | num_head_null++; | |
863 | else | |
864 | num_snap_null++; | |
865 | } else if (dn->last == CEPH_NOSNAP) { | |
866 | num_head_items++; | |
867 | ||
f67539c2 TL |
868 | auto _fnode = _get_fnode(); |
869 | ||
7c673cae FG |
870 | if (dn->get_linkage()->is_primary()) { |
871 | CInode *in = dn->get_linkage()->get_inode(); | |
f67539c2 | 872 | const auto& pi = in->get_projected_inode(); |
28e407b8 | 873 | if (in->is_dir()) { |
f67539c2 | 874 | _fnode->fragstat.nsubdirs++; |
28e407b8 AA |
875 | if (in->item_pop_lru.is_on_list()) |
876 | pop_lru_subdirs.push_back(&in->item_pop_lru); | |
877 | } else { | |
f67539c2 | 878 | _fnode->fragstat.nfiles++; |
28e407b8 | 879 | } |
f67539c2 TL |
880 | _fnode->rstat.rbytes += pi->accounted_rstat.rbytes; |
881 | _fnode->rstat.rfiles += pi->accounted_rstat.rfiles; | |
882 | _fnode->rstat.rsubdirs += pi->accounted_rstat.rsubdirs; | |
883 | _fnode->rstat.rsnaps += pi->accounted_rstat.rsnaps; | |
884 | if (pi->accounted_rstat.rctime > fnode->rstat.rctime) | |
885 | _fnode->rstat.rctime = pi->accounted_rstat.rctime; | |
7c673cae | 886 | |
11fdf7f2 TL |
887 | if (in->is_any_caps()) |
888 | adjust_num_inodes_with_caps(1); | |
889 | ||
7c673cae FG |
890 | // move dirty inode rstat to new dirfrag |
891 | if (in->is_dirty_rstat()) | |
892 | dirty_rstat_inodes.push_back(&in->dirty_rstat_item); | |
893 | } else if (dn->get_linkage()->is_remote()) { | |
894 | if (dn->get_linkage()->get_remote_d_type() == DT_DIR) | |
f67539c2 | 895 | _fnode->fragstat.nsubdirs++; |
7c673cae | 896 | else |
f67539c2 | 897 | _fnode->fragstat.nfiles++; |
7c673cae FG |
898 | } |
899 | } else { | |
900 | num_snap_items++; | |
901 | if (dn->get_linkage()->is_primary()) { | |
902 | CInode *in = dn->get_linkage()->get_inode(); | |
903 | if (in->is_dirty_rstat()) | |
904 | dirty_rstat_inodes.push_back(&in->dirty_rstat_item); | |
905 | } | |
906 | } | |
907 | ||
11fdf7f2 | 908 | { |
7c673cae | 909 | int dap = dn->get_num_dir_auth_pins(); |
11fdf7f2 TL |
910 | if (dap) { |
911 | adjust_nested_auth_pins(dap, NULL); | |
912 | dn->dir->adjust_nested_auth_pins(-dap, NULL); | |
913 | } | |
7c673cae FG |
914 | } |
915 | ||
b32b8144 FG |
916 | if (dn->is_dirty()) { |
917 | dirty_dentries.push_back(&dn->item_dir_dirty); | |
7c673cae | 918 | num_dirty++; |
b32b8144 | 919 | } |
7c673cae FG |
920 | |
921 | dn->dir = this; | |
922 | } | |
923 | ||
11fdf7f2 | 924 | void CDir::prepare_old_fragment(map<string_snap_t, MDSContext::vec >& dentry_waiters, bool replay) |
7c673cae FG |
925 | { |
926 | // auth_pin old fragment for duration so that any auth_pinning | |
927 | // during the dentry migration doesn't trigger side effects | |
928 | if (!replay && is_auth()) | |
929 | auth_pin(this); | |
31f18b77 FG |
930 | |
931 | if (!waiting_on_dentry.empty()) { | |
94b18763 FG |
932 | for (const auto &p : waiting_on_dentry) { |
933 | auto &e = dentry_waiters[p.first]; | |
934 | for (const auto &waiter : p.second) { | |
935 | e.push_back(waiter); | |
936 | } | |
937 | } | |
31f18b77 FG |
938 | waiting_on_dentry.clear(); |
939 | put(PIN_DNWAITER); | |
940 | } | |
7c673cae FG |
941 | } |
942 | ||
943 | void CDir::prepare_new_fragment(bool replay) | |
944 | { | |
945 | if (!replay && is_auth()) { | |
946 | _freeze_dir(); | |
947 | mark_complete(); | |
948 | } | |
31f18b77 | 949 | inode->add_dirfrag(this); |
7c673cae FG |
950 | } |
951 | ||
11fdf7f2 | 952 | void CDir::finish_old_fragment(MDSContext::vec& waiters, bool replay) |
7c673cae FG |
953 | { |
954 | // take waiters _before_ unfreeze... | |
955 | if (!replay) { | |
956 | take_waiting(WAIT_ANY_MASK, waiters); | |
957 | if (is_auth()) { | |
958 | auth_unpin(this); // pinned in prepare_old_fragment | |
11fdf7f2 | 959 | ceph_assert(is_frozen_dir()); |
7c673cae FG |
960 | unfreeze_dir(); |
961 | } | |
962 | } | |
963 | ||
11fdf7f2 TL |
964 | ceph_assert(dir_auth_pins == 0); |
965 | ceph_assert(auth_pins == 0); | |
7c673cae FG |
966 | |
967 | num_head_items = num_head_null = 0; | |
968 | num_snap_items = num_snap_null = 0; | |
11fdf7f2 | 969 | adjust_num_inodes_with_caps(-num_inodes_with_caps); |
7c673cae FG |
970 | |
971 | // this mirrors init_fragment_pins() | |
972 | if (is_auth()) | |
973 | clear_replica_map(); | |
974 | if (is_dirty()) | |
975 | mark_clean(); | |
976 | if (state_test(STATE_IMPORTBOUND)) | |
977 | put(PIN_IMPORTBOUND); | |
978 | if (state_test(STATE_EXPORTBOUND)) | |
979 | put(PIN_EXPORTBOUND); | |
980 | if (is_subtree_root()) | |
981 | put(PIN_SUBTREE); | |
982 | ||
983 | if (auth_pins > 0) | |
984 | put(PIN_AUTHPIN); | |
985 | ||
11fdf7f2 | 986 | ceph_assert(get_num_ref() == (state_test(STATE_STICKY) ? 1:0)); |
7c673cae FG |
987 | } |
988 | ||
989 | void CDir::init_fragment_pins() | |
990 | { | |
181888fb | 991 | if (is_replicated()) |
7c673cae FG |
992 | get(PIN_REPLICATED); |
993 | if (state_test(STATE_DIRTY)) | |
994 | get(PIN_DIRTY); | |
995 | if (state_test(STATE_EXPORTBOUND)) | |
996 | get(PIN_EXPORTBOUND); | |
997 | if (state_test(STATE_IMPORTBOUND)) | |
998 | get(PIN_IMPORTBOUND); | |
999 | if (is_subtree_root()) | |
1000 | get(PIN_SUBTREE); | |
1001 | } | |
1002 | ||
9f95a23c | 1003 | void CDir::split(int bits, std::vector<CDir*>* subs, MDSContext::vec& waiters, bool replay) |
7c673cae FG |
1004 | { |
1005 | dout(10) << "split by " << bits << " bits on " << *this << dendl; | |
1006 | ||
11fdf7f2 | 1007 | ceph_assert(replay || is_complete() || !is_auth()); |
7c673cae | 1008 | |
11fdf7f2 | 1009 | frag_vec_t frags; |
7c673cae FG |
1010 | frag.split(bits, frags); |
1011 | ||
1012 | vector<CDir*> subfrags(1 << bits); | |
1013 | ||
1014 | double fac = 1.0 / (double)(1 << bits); // for scaling load vecs | |
1015 | ||
1016 | version_t rstat_version = inode->get_projected_inode()->rstat.version; | |
1017 | version_t dirstat_version = inode->get_projected_inode()->dirstat.version; | |
1018 | ||
1019 | nest_info_t rstatdiff; | |
1020 | frag_info_t fragstatdiff; | |
f67539c2 TL |
1021 | if (fnode->accounted_rstat.version == rstat_version) |
1022 | rstatdiff.add_delta(fnode->accounted_rstat, fnode->rstat); | |
1023 | if (fnode->accounted_fragstat.version == dirstat_version) | |
1024 | fragstatdiff.add_delta(fnode->accounted_fragstat, fnode->fragstat); | |
7c673cae FG |
1025 | dout(10) << " rstatdiff " << rstatdiff << " fragstatdiff " << fragstatdiff << dendl; |
1026 | ||
11fdf7f2 | 1027 | map<string_snap_t, MDSContext::vec > dentry_waiters; |
31f18b77 | 1028 | prepare_old_fragment(dentry_waiters, replay); |
7c673cae FG |
1029 | |
1030 | // create subfrag dirs | |
1031 | int n = 0; | |
11fdf7f2 | 1032 | for (const auto& fg : frags) { |
f67539c2 | 1033 | CDir *f = new CDir(inode, fg, mdcache, is_auth()); |
7c673cae | 1034 | f->state_set(state & (MASK_STATE_FRAGMENT_KEPT | STATE_COMPLETE)); |
181888fb | 1035 | f->get_replicas() = get_replicas(); |
7c673cae FG |
1036 | f->pop_me = pop_me; |
1037 | f->pop_me.scale(fac); | |
1038 | ||
1039 | // FIXME; this is an approximation | |
1040 | f->pop_nested = pop_nested; | |
1041 | f->pop_nested.scale(fac); | |
1042 | f->pop_auth_subtree = pop_auth_subtree; | |
1043 | f->pop_auth_subtree.scale(fac); | |
1044 | f->pop_auth_subtree_nested = pop_auth_subtree_nested; | |
1045 | f->pop_auth_subtree_nested.scale(fac); | |
1046 | ||
11fdf7f2 | 1047 | dout(10) << " subfrag " << fg << " " << *f << dendl; |
7c673cae | 1048 | subfrags[n++] = f; |
9f95a23c | 1049 | subs->push_back(f); |
7c673cae FG |
1050 | |
1051 | f->set_dir_auth(get_dir_auth()); | |
11fdf7f2 | 1052 | f->freeze_tree_state = freeze_tree_state; |
7c673cae | 1053 | f->prepare_new_fragment(replay); |
1adf2230 | 1054 | f->init_fragment_pins(); |
7c673cae FG |
1055 | } |
1056 | ||
1057 | // repartition dentries | |
1058 | while (!items.empty()) { | |
94b18763 | 1059 | auto p = items.begin(); |
7c673cae FG |
1060 | |
1061 | CDentry *dn = p->second; | |
94b18763 | 1062 | frag_t subfrag = inode->pick_dirfrag(dn->get_name()); |
7c673cae FG |
1063 | int n = (subfrag.value() & (subfrag.mask() ^ frag.mask())) >> subfrag.mask_shift(); |
1064 | dout(15) << " subfrag " << subfrag << " n=" << n << " for " << p->first << dendl; | |
1065 | CDir *f = subfrags[n]; | |
1066 | f->steal_dentry(dn); | |
1067 | } | |
1068 | ||
94b18763 | 1069 | for (const auto &p : dentry_waiters) { |
31f18b77 FG |
1070 | frag_t subfrag = inode->pick_dirfrag(p.first.name); |
1071 | int n = (subfrag.value() & (subfrag.mask() ^ frag.mask())) >> subfrag.mask_shift(); | |
1072 | CDir *f = subfrags[n]; | |
1073 | ||
1074 | if (f->waiting_on_dentry.empty()) | |
1075 | f->get(PIN_DNWAITER); | |
94b18763 FG |
1076 | auto &e = f->waiting_on_dentry[p.first]; |
1077 | for (const auto &waiter : p.second) { | |
1078 | e.push_back(waiter); | |
1079 | } | |
31f18b77 FG |
1080 | } |
1081 | ||
7c673cae FG |
1082 | // FIXME: handle dirty old rstat |
1083 | ||
1084 | // fix up new frag fragstats | |
f67539c2 | 1085 | for (int i = 0; i < n; i++) { |
7c673cae | 1086 | CDir *f = subfrags[i]; |
f67539c2 TL |
1087 | auto _fnode = f->_get_fnode(); |
1088 | _fnode->version = f->projected_version = get_version(); | |
1089 | _fnode->rstat.version = rstat_version; | |
1090 | _fnode->accounted_rstat = _fnode->rstat; | |
1091 | _fnode->fragstat.version = dirstat_version; | |
1092 | _fnode->accounted_fragstat = _fnode->fragstat; | |
1093 | dout(10) << " rstat " << _fnode->rstat << " fragstat " << _fnode->fragstat | |
7c673cae | 1094 | << " on " << *f << dendl; |
7c673cae | 1095 | |
f67539c2 TL |
1096 | if (i == 0) { |
1097 | // give any outstanding frag stat differential to first frag | |
1098 | dout(10) << " giving rstatdiff " << rstatdiff << " fragstatdiff" << fragstatdiff | |
1099 | << " to " << *subfrags[0] << dendl; | |
1100 | _fnode->accounted_rstat.add(rstatdiff); | |
1101 | _fnode->accounted_fragstat.add(fragstatdiff); | |
1102 | } | |
1103 | } | |
7c673cae FG |
1104 | |
1105 | finish_old_fragment(waiters, replay); | |
1106 | } | |
1107 | ||
9f95a23c | 1108 | void CDir::merge(const std::vector<CDir*>& subs, MDSContext::vec& waiters, bool replay) |
7c673cae FG |
1109 | { |
1110 | dout(10) << "merge " << subs << dendl; | |
1111 | ||
9f95a23c TL |
1112 | ceph_assert(subs.size() > 0); |
1113 | ||
11fdf7f2 TL |
1114 | set_dir_auth(subs.front()->get_dir_auth()); |
1115 | freeze_tree_state = subs.front()->freeze_tree_state; | |
1116 | ||
9f95a23c | 1117 | for (const auto& dir : subs) { |
11fdf7f2 TL |
1118 | ceph_assert(get_dir_auth() == dir->get_dir_auth()); |
1119 | ceph_assert(freeze_tree_state == dir->freeze_tree_state); | |
7c673cae FG |
1120 | } |
1121 | ||
7c673cae FG |
1122 | prepare_new_fragment(replay); |
1123 | ||
f67539c2 TL |
1124 | auto _fnode = _get_fnode(); |
1125 | ||
7c673cae FG |
1126 | nest_info_t rstatdiff; |
1127 | frag_info_t fragstatdiff; | |
1128 | bool touched_mtime, touched_chattr; | |
1129 | version_t rstat_version = inode->get_projected_inode()->rstat.version; | |
1130 | version_t dirstat_version = inode->get_projected_inode()->dirstat.version; | |
1131 | ||
11fdf7f2 | 1132 | map<string_snap_t, MDSContext::vec > dentry_waiters; |
31f18b77 | 1133 | |
9f95a23c | 1134 | for (const auto& dir : subs) { |
7c673cae | 1135 | dout(10) << " subfrag " << dir->get_frag() << " " << *dir << dendl; |
11fdf7f2 | 1136 | ceph_assert(!dir->is_auth() || dir->is_complete() || replay); |
7c673cae | 1137 | |
f67539c2 TL |
1138 | if (dir->get_fnode()->accounted_rstat.version == rstat_version) |
1139 | rstatdiff.add_delta(dir->get_fnode()->accounted_rstat, dir->get_fnode()->rstat); | |
1140 | if (dir->get_fnode()->accounted_fragstat.version == dirstat_version) | |
1141 | fragstatdiff.add_delta(dir->get_fnode()->accounted_fragstat, dir->get_fnode()->fragstat, | |
7c673cae FG |
1142 | &touched_mtime, &touched_chattr); |
1143 | ||
31f18b77 | 1144 | dir->prepare_old_fragment(dentry_waiters, replay); |
7c673cae FG |
1145 | |
1146 | // steal dentries | |
1147 | while (!dir->items.empty()) | |
1148 | steal_dentry(dir->items.begin()->second); | |
1149 | ||
1150 | // merge replica map | |
181888fb FG |
1151 | for (const auto &p : dir->get_replicas()) { |
1152 | unsigned cur = get_replicas()[p.first]; | |
1153 | if (p.second > cur) | |
1154 | get_replicas()[p.first] = p.second; | |
7c673cae FG |
1155 | } |
1156 | ||
1157 | // merge version | |
f67539c2 TL |
1158 | if (dir->get_version() > _fnode->version) |
1159 | _fnode->version = projected_version = dir->get_version(); | |
7c673cae FG |
1160 | |
1161 | // merge state | |
1162 | state_set(dir->get_state() & MASK_STATE_FRAGMENT_KEPT); | |
7c673cae FG |
1163 | |
1164 | dir->finish_old_fragment(waiters, replay); | |
1165 | inode->close_dirfrag(dir->get_frag()); | |
1166 | } | |
1167 | ||
31f18b77 FG |
1168 | if (!dentry_waiters.empty()) { |
1169 | get(PIN_DNWAITER); | |
94b18763 FG |
1170 | for (const auto &p : dentry_waiters) { |
1171 | auto &e = waiting_on_dentry[p.first]; | |
1172 | for (const auto &waiter : p.second) { | |
1173 | e.push_back(waiter); | |
1174 | } | |
31f18b77 FG |
1175 | } |
1176 | } | |
1177 | ||
7c673cae FG |
1178 | if (is_auth() && !replay) |
1179 | mark_complete(); | |
1180 | ||
1181 | // FIXME: merge dirty old rstat | |
f67539c2 TL |
1182 | _fnode->rstat.version = rstat_version; |
1183 | _fnode->accounted_rstat = _fnode->rstat; | |
1184 | _fnode->accounted_rstat.add(rstatdiff); | |
7c673cae | 1185 | |
f67539c2 TL |
1186 | _fnode->fragstat.version = dirstat_version; |
1187 | _fnode->accounted_fragstat = _fnode->fragstat; | |
1188 | _fnode->accounted_fragstat.add(fragstatdiff); | |
7c673cae FG |
1189 | |
1190 | init_fragment_pins(); | |
1191 | } | |
1192 | ||
1193 | ||
1194 | ||
1195 | ||
1196 | void CDir::resync_accounted_fragstat() | |
1197 | { | |
f67539c2 TL |
1198 | auto pf = _get_projected_fnode(); |
1199 | const auto& pi = inode->get_projected_inode(); | |
7c673cae FG |
1200 | |
1201 | if (pf->accounted_fragstat.version != pi->dirstat.version) { | |
1202 | pf->fragstat.version = pi->dirstat.version; | |
11fdf7f2 | 1203 | dout(10) << __func__ << " " << pf->accounted_fragstat << " -> " << pf->fragstat << dendl; |
7c673cae FG |
1204 | pf->accounted_fragstat = pf->fragstat; |
1205 | } | |
1206 | } | |
1207 | ||
1208 | /* | |
1209 | * resync rstat and accounted_rstat with inode | |
1210 | */ | |
1211 | void CDir::resync_accounted_rstat() | |
1212 | { | |
f67539c2 TL |
1213 | auto pf = _get_projected_fnode(); |
1214 | const auto& pi = inode->get_projected_inode(); | |
7c673cae FG |
1215 | |
1216 | if (pf->accounted_rstat.version != pi->rstat.version) { | |
1217 | pf->rstat.version = pi->rstat.version; | |
11fdf7f2 | 1218 | dout(10) << __func__ << " " << pf->accounted_rstat << " -> " << pf->rstat << dendl; |
7c673cae FG |
1219 | pf->accounted_rstat = pf->rstat; |
1220 | dirty_old_rstat.clear(); | |
1221 | } | |
1222 | } | |
1223 | ||
f67539c2 | 1224 | void CDir::assimilate_dirty_rstat_inodes(MutationRef& mut) |
7c673cae | 1225 | { |
11fdf7f2 | 1226 | dout(10) << __func__ << dendl; |
7c673cae FG |
1227 | for (elist<CInode*>::iterator p = dirty_rstat_inodes.begin_use_current(); |
1228 | !p.end(); ++p) { | |
1229 | CInode *in = *p; | |
11fdf7f2 | 1230 | ceph_assert(in->is_auth()); |
7c673cae FG |
1231 | if (in->is_frozen()) |
1232 | continue; | |
1233 | ||
f67539c2 TL |
1234 | mut->auth_pin(in); |
1235 | ||
1236 | auto pi = in->project_inode(mut); | |
1237 | pi.inode->version = in->pre_dirty(); | |
7c673cae | 1238 | |
f67539c2 | 1239 | mdcache->project_rstat_inode_to_frag(mut, in, this, 0, 0, nullptr); |
7c673cae FG |
1240 | } |
1241 | state_set(STATE_ASSIMRSTAT); | |
11fdf7f2 | 1242 | dout(10) << __func__ << " done" << dendl; |
7c673cae FG |
1243 | } |
1244 | ||
f67539c2 | 1245 | void CDir::assimilate_dirty_rstat_inodes_finish(EMetaBlob *blob) |
7c673cae FG |
1246 | { |
1247 | if (!state_test(STATE_ASSIMRSTAT)) | |
1248 | return; | |
1249 | state_clear(STATE_ASSIMRSTAT); | |
11fdf7f2 | 1250 | dout(10) << __func__ << dendl; |
7c673cae FG |
1251 | elist<CInode*>::iterator p = dirty_rstat_inodes.begin_use_current(); |
1252 | while (!p.end()) { | |
1253 | CInode *in = *p; | |
1254 | ++p; | |
1255 | ||
1256 | if (in->is_frozen()) | |
1257 | continue; | |
1258 | ||
1259 | CDentry *dn = in->get_projected_parent_dn(); | |
1260 | ||
7c673cae FG |
1261 | in->clear_dirty_rstat(); |
1262 | blob->add_primary_dentry(dn, in, true); | |
1263 | } | |
1264 | ||
1265 | if (!dirty_rstat_inodes.empty()) | |
f67539c2 | 1266 | mdcache->mds->locker->mark_updated_scatterlock(&inode->nestlock); |
7c673cae FG |
1267 | } |
1268 | ||
1269 | ||
1270 | ||
1271 | ||
1272 | /**************************************** | |
1273 | * WAITING | |
1274 | */ | |
1275 | ||
11fdf7f2 | 1276 | void CDir::add_dentry_waiter(std::string_view dname, snapid_t snapid, MDSContext *c) |
7c673cae FG |
1277 | { |
1278 | if (waiting_on_dentry.empty()) | |
1279 | get(PIN_DNWAITER); | |
1280 | waiting_on_dentry[string_snap_t(dname, snapid)].push_back(c); | |
11fdf7f2 | 1281 | dout(10) << __func__ << " dentry " << dname |
7c673cae FG |
1282 | << " snap " << snapid |
1283 | << " " << c << " on " << *this << dendl; | |
1284 | } | |
1285 | ||
11fdf7f2 TL |
1286 | void CDir::take_dentry_waiting(std::string_view dname, snapid_t first, snapid_t last, |
1287 | MDSContext::vec& ls) | |
7c673cae FG |
1288 | { |
1289 | if (waiting_on_dentry.empty()) | |
1290 | return; | |
1291 | ||
1292 | string_snap_t lb(dname, first); | |
1293 | string_snap_t ub(dname, last); | |
94b18763 FG |
1294 | auto it = waiting_on_dentry.lower_bound(lb); |
1295 | while (it != waiting_on_dentry.end() && | |
1296 | !(ub < it->first)) { | |
11fdf7f2 | 1297 | dout(10) << __func__ << " " << dname |
7c673cae | 1298 | << " [" << first << "," << last << "] found waiter on snap " |
94b18763 | 1299 | << it->first.snapid |
7c673cae | 1300 | << " on " << *this << dendl; |
94b18763 FG |
1301 | for (const auto &waiter : it->second) { |
1302 | ls.push_back(waiter); | |
1303 | } | |
1304 | waiting_on_dentry.erase(it++); | |
7c673cae FG |
1305 | } |
1306 | ||
1307 | if (waiting_on_dentry.empty()) | |
1308 | put(PIN_DNWAITER); | |
1309 | } | |
1310 | ||
11fdf7f2 | 1311 | void CDir::take_sub_waiting(MDSContext::vec& ls) |
7c673cae | 1312 | { |
11fdf7f2 | 1313 | dout(10) << __func__ << dendl; |
7c673cae | 1314 | if (!waiting_on_dentry.empty()) { |
94b18763 FG |
1315 | for (const auto &p : waiting_on_dentry) { |
1316 | for (const auto &waiter : p.second) { | |
1317 | ls.push_back(waiter); | |
1318 | } | |
1319 | } | |
7c673cae FG |
1320 | waiting_on_dentry.clear(); |
1321 | put(PIN_DNWAITER); | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | ||
1326 | ||
11fdf7f2 | 1327 | void CDir::add_waiter(uint64_t tag, MDSContext *c) |
7c673cae FG |
1328 | { |
1329 | // hierarchical? | |
7c673cae FG |
1330 | |
1331 | // at subtree root? | |
1332 | if (tag & WAIT_ATSUBTREEROOT) { | |
1333 | if (!is_subtree_root()) { | |
1334 | // try parent | |
1335 | dout(10) << "add_waiter " << std::hex << tag << std::dec << " " << c << " should be ATSUBTREEROOT, " << *this << " is not root, trying parent" << dendl; | |
1336 | inode->parent->dir->add_waiter(tag, c); | |
1337 | return; | |
1338 | } | |
1339 | } | |
1340 | ||
11fdf7f2 | 1341 | ceph_assert(!(tag & WAIT_CREATED) || state_test(STATE_CREATING)); |
7c673cae FG |
1342 | |
1343 | MDSCacheObject::add_waiter(tag, c); | |
1344 | } | |
1345 | ||
1346 | ||
1347 | ||
1348 | /* NOTE: this checks dentry waiters too */ | |
11fdf7f2 | 1349 | void CDir::take_waiting(uint64_t mask, MDSContext::vec& ls) |
7c673cae FG |
1350 | { |
1351 | if ((mask & WAIT_DENTRY) && !waiting_on_dentry.empty()) { | |
1352 | // take all dentry waiters | |
94b18763 FG |
1353 | for (const auto &p : waiting_on_dentry) { |
1354 | dout(10) << "take_waiting dentry " << p.first.name | |
1355 | << " snap " << p.first.snapid << " on " << *this << dendl; | |
1356 | for (const auto &waiter : p.second) { | |
1357 | ls.push_back(waiter); | |
1358 | } | |
7c673cae | 1359 | } |
94b18763 | 1360 | waiting_on_dentry.clear(); |
7c673cae FG |
1361 | put(PIN_DNWAITER); |
1362 | } | |
1363 | ||
1364 | // waiting | |
1365 | MDSCacheObject::take_waiting(mask, ls); | |
1366 | } | |
1367 | ||
1368 | ||
1369 | void CDir::finish_waiting(uint64_t mask, int result) | |
1370 | { | |
11fdf7f2 | 1371 | dout(11) << __func__ << " mask " << hex << mask << dec << " result " << result << " on " << *this << dendl; |
7c673cae | 1372 | |
11fdf7f2 | 1373 | MDSContext::vec finished; |
7c673cae FG |
1374 | take_waiting(mask, finished); |
1375 | if (result < 0) | |
1376 | finish_contexts(g_ceph_context, finished, result); | |
1377 | else | |
f67539c2 | 1378 | mdcache->mds->queue_waiters(finished); |
7c673cae FG |
1379 | } |
1380 | ||
1381 | ||
1382 | ||
1383 | // dirty/clean | |
1384 | ||
f67539c2 | 1385 | CDir::fnode_ptr CDir::project_fnode(const MutationRef& mut) |
7c673cae | 1386 | { |
11fdf7f2 | 1387 | ceph_assert(get_version() != 0); |
f67539c2 TL |
1388 | |
1389 | if (mut && mut->is_projected(this)) | |
1390 | return std::const_pointer_cast<fnode_t>(projected_fnode.back()); | |
1391 | ||
1392 | auto pf = allocate_fnode(*get_projected_fnode()); | |
7c673cae FG |
1393 | |
1394 | if (scrub_infop && scrub_infop->last_scrub_dirty) { | |
f67539c2 TL |
1395 | pf->localized_scrub_stamp = scrub_infop->last_local.time; |
1396 | pf->localized_scrub_version = scrub_infop->last_local.version; | |
1397 | pf->recursive_scrub_stamp = scrub_infop->last_recursive.time; | |
1398 | pf->recursive_scrub_version = scrub_infop->last_recursive.version; | |
7c673cae FG |
1399 | scrub_infop->last_scrub_dirty = false; |
1400 | scrub_maybe_delete_info(); | |
1401 | } | |
1402 | ||
f67539c2 TL |
1403 | projected_fnode.emplace_back(pf); |
1404 | if (mut) | |
1405 | mut->add_projected_node(this); | |
1406 | dout(10) << __func__ << " " << pf.get() << dendl; | |
1407 | return pf; | |
7c673cae FG |
1408 | } |
1409 | ||
f67539c2 | 1410 | void CDir::pop_and_dirty_projected_fnode(LogSegment *ls, const MutationRef& mut) |
7c673cae | 1411 | { |
11fdf7f2 | 1412 | ceph_assert(!projected_fnode.empty()); |
f67539c2 TL |
1413 | auto pf = std::move(projected_fnode.front()); |
1414 | dout(15) << __func__ << " " << pf.get() << " v" << pf->version << dendl; | |
1415 | ||
7c673cae | 1416 | projected_fnode.pop_front(); |
f67539c2 TL |
1417 | if (mut) |
1418 | mut->remove_projected_node(this); | |
7c673cae | 1419 | |
f67539c2 TL |
1420 | reset_fnode(std::move(pf)); |
1421 | _mark_dirty(ls); | |
1422 | } | |
7c673cae FG |
1423 | |
1424 | version_t CDir::pre_dirty(version_t min) | |
1425 | { | |
1426 | if (min > projected_version) | |
1427 | projected_version = min; | |
1428 | ++projected_version; | |
11fdf7f2 | 1429 | dout(10) << __func__ << " " << projected_version << dendl; |
7c673cae FG |
1430 | return projected_version; |
1431 | } | |
1432 | ||
f67539c2 | 1433 | void CDir::mark_dirty(LogSegment *ls, version_t pv) |
7c673cae | 1434 | { |
f67539c2 TL |
1435 | ceph_assert(is_auth()); |
1436 | ||
1437 | if (pv) { | |
1438 | ceph_assert(get_version() < pv); | |
1439 | ceph_assert(pv <= projected_version); | |
1440 | ceph_assert(!projected_fnode.empty() && | |
1441 | pv <= projected_fnode.front()->version); | |
1442 | } | |
1443 | ||
7c673cae FG |
1444 | _mark_dirty(ls); |
1445 | } | |
1446 | ||
1447 | void CDir::_mark_dirty(LogSegment *ls) | |
1448 | { | |
1449 | if (!state_test(STATE_DIRTY)) { | |
11fdf7f2 | 1450 | dout(10) << __func__ << " (was clean) " << *this << " version " << get_version() << dendl; |
7c673cae | 1451 | _set_dirty_flag(); |
11fdf7f2 | 1452 | ceph_assert(ls); |
7c673cae | 1453 | } else { |
11fdf7f2 | 1454 | dout(10) << __func__ << " (already dirty) " << *this << " version " << get_version() << dendl; |
7c673cae FG |
1455 | } |
1456 | if (ls) { | |
1457 | ls->dirty_dirfrags.push_back(&item_dirty); | |
1458 | ||
1459 | // if i've never committed, i need to be before _any_ mention of me is trimmed from the journal. | |
1460 | if (committed_version == 0 && !item_new.is_on_list()) | |
1461 | ls->new_dirfrags.push_back(&item_new); | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | void CDir::mark_new(LogSegment *ls) | |
1466 | { | |
1467 | ls->new_dirfrags.push_back(&item_new); | |
1468 | state_clear(STATE_CREATING); | |
1469 | ||
11fdf7f2 | 1470 | MDSContext::vec waiters; |
7c673cae | 1471 | take_waiting(CDir::WAIT_CREATED, waiters); |
f67539c2 | 1472 | mdcache->mds->queue_waiters(waiters); |
7c673cae FG |
1473 | } |
1474 | ||
1475 | void CDir::mark_clean() | |
1476 | { | |
11fdf7f2 | 1477 | dout(10) << __func__ << " " << *this << " version " << get_version() << dendl; |
7c673cae FG |
1478 | if (state_test(STATE_DIRTY)) { |
1479 | item_dirty.remove_myself(); | |
1480 | item_new.remove_myself(); | |
1481 | ||
1482 | state_clear(STATE_DIRTY); | |
1483 | put(PIN_DIRTY); | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | // caller should hold auth pin of this | |
1488 | void CDir::log_mark_dirty() | |
1489 | { | |
b32b8144 | 1490 | if (is_dirty() || projected_version > get_version()) |
7c673cae FG |
1491 | return; // noop if it is already dirty or will be dirty |
1492 | ||
f67539c2 TL |
1493 | auto _fnode = allocate_fnode(*get_fnode()); |
1494 | _fnode->version = pre_dirty(); | |
1495 | reset_fnode(std::move(_fnode)); | |
1496 | mark_dirty(mdcache->mds->mdlog->get_current_segment()); | |
7c673cae FG |
1497 | } |
1498 | ||
1499 | void CDir::mark_complete() { | |
1500 | state_set(STATE_COMPLETE); | |
1501 | bloom.reset(); | |
1502 | } | |
1503 | ||
1504 | void CDir::first_get() | |
1505 | { | |
1506 | inode->get(CInode::PIN_DIRFRAG); | |
1507 | } | |
1508 | ||
1509 | void CDir::last_put() | |
1510 | { | |
1511 | inode->put(CInode::PIN_DIRFRAG); | |
1512 | } | |
1513 | ||
1514 | ||
1515 | ||
1516 | /****************************************************************************** | |
1517 | * FETCH and COMMIT | |
1518 | */ | |
1519 | ||
1520 | // ----------------------- | |
1521 | // FETCH | |
11fdf7f2 | 1522 | void CDir::fetch(MDSContext *c, bool ignore_authpinnability) |
7c673cae FG |
1523 | { |
1524 | string want; | |
1525 | return fetch(c, want, ignore_authpinnability); | |
1526 | } | |
1527 | ||
11fdf7f2 | 1528 | void CDir::fetch(MDSContext *c, std::string_view want_dn, bool ignore_authpinnability) |
7c673cae FG |
1529 | { |
1530 | dout(10) << "fetch on " << *this << dendl; | |
1531 | ||
11fdf7f2 TL |
1532 | ceph_assert(is_auth()); |
1533 | ceph_assert(!is_complete()); | |
7c673cae FG |
1534 | |
1535 | if (!can_auth_pin() && !ignore_authpinnability) { | |
1536 | if (c) { | |
1537 | dout(7) << "fetch waiting for authpinnable" << dendl; | |
1538 | add_waiter(WAIT_UNFREEZE, c); | |
1539 | } else | |
1540 | dout(7) << "fetch not authpinnable and no context" << dendl; | |
1541 | return; | |
1542 | } | |
1543 | ||
1544 | // unlinked directory inode shouldn't have any entry | |
31f18b77 FG |
1545 | if (!inode->is_base() && get_parent_dir()->inode->is_stray() && |
1546 | !inode->snaprealm) { | |
7c673cae FG |
1547 | dout(7) << "fetch dirfrag for unlinked directory, mark complete" << dendl; |
1548 | if (get_version() == 0) { | |
11fdf7f2 | 1549 | ceph_assert(inode->is_auth()); |
f67539c2 TL |
1550 | auto _fnode = allocate_fnode(); |
1551 | _fnode->version = 1; | |
1552 | reset_fnode(std::move(_fnode)); | |
7c673cae FG |
1553 | |
1554 | if (state_test(STATE_REJOINUNDEF)) { | |
f67539c2 | 1555 | ceph_assert(mdcache->mds->is_rejoin()); |
7c673cae | 1556 | state_clear(STATE_REJOINUNDEF); |
f67539c2 | 1557 | mdcache->opened_undef_dirfrag(this); |
7c673cae FG |
1558 | } |
1559 | } | |
1560 | mark_complete(); | |
1561 | ||
1562 | if (c) | |
f67539c2 | 1563 | mdcache->mds->queue_waiter(c); |
7c673cae FG |
1564 | return; |
1565 | } | |
1566 | ||
1567 | if (c) add_waiter(WAIT_COMPLETE, c); | |
94b18763 | 1568 | if (!want_dn.empty()) wanted_items.insert(mempool::mds_co::string(want_dn)); |
7c673cae FG |
1569 | |
1570 | // already fetching? | |
1571 | if (state_test(CDir::STATE_FETCHING)) { | |
1572 | dout(7) << "already fetching; waiting" << dendl; | |
1573 | return; | |
1574 | } | |
1575 | ||
1576 | auth_pin(this); | |
1577 | state_set(CDir::STATE_FETCHING); | |
1578 | ||
f67539c2 | 1579 | if (mdcache->mds->logger) mdcache->mds->logger->inc(l_mds_dir_fetch); |
7c673cae | 1580 | |
522d829b TL |
1581 | mdcache->mds->balancer->hit_dir(this, META_POP_FETCH); |
1582 | ||
7c673cae FG |
1583 | std::set<dentry_key_t> empty; |
1584 | _omap_fetch(NULL, empty); | |
1585 | } | |
1586 | ||
11fdf7f2 | 1587 | void CDir::fetch(MDSContext *c, const std::set<dentry_key_t>& keys) |
7c673cae FG |
1588 | { |
1589 | dout(10) << "fetch " << keys.size() << " keys on " << *this << dendl; | |
1590 | ||
11fdf7f2 TL |
1591 | ceph_assert(is_auth()); |
1592 | ceph_assert(!is_complete()); | |
7c673cae FG |
1593 | |
1594 | if (!can_auth_pin()) { | |
1595 | dout(7) << "fetch keys waiting for authpinnable" << dendl; | |
1596 | add_waiter(WAIT_UNFREEZE, c); | |
1597 | return; | |
1598 | } | |
1599 | if (state_test(CDir::STATE_FETCHING)) { | |
1600 | dout(7) << "fetch keys waiting for full fetch" << dendl; | |
1601 | add_waiter(WAIT_COMPLETE, c); | |
1602 | return; | |
1603 | } | |
1604 | ||
1605 | auth_pin(this); | |
f67539c2 | 1606 | if (mdcache->mds->logger) mdcache->mds->logger->inc(l_mds_dir_fetch); |
7c673cae | 1607 | |
522d829b TL |
1608 | mdcache->mds->balancer->hit_dir(this, META_POP_FETCH); |
1609 | ||
7c673cae FG |
1610 | _omap_fetch(c, keys); |
1611 | } | |
1612 | ||
1613 | class C_IO_Dir_OMAP_FetchedMore : public CDirIOContext { | |
11fdf7f2 | 1614 | MDSContext *fin; |
7c673cae | 1615 | public: |
f67539c2 | 1616 | const version_t omap_version; |
7c673cae FG |
1617 | bufferlist hdrbl; |
1618 | bool more = false; | |
1619 | map<string, bufferlist> omap; ///< carry-over from before | |
1620 | map<string, bufferlist> omap_more; ///< new batch | |
1621 | int ret; | |
f67539c2 TL |
1622 | C_IO_Dir_OMAP_FetchedMore(CDir *d, version_t v, MDSContext *f) : |
1623 | CDirIOContext(d), fin(f), omap_version(v), ret(0) { } | |
7c673cae | 1624 | void finish(int r) { |
f67539c2 TL |
1625 | if (omap_version < dir->get_committed_version()) { |
1626 | omap.clear(); | |
1627 | dir->_omap_fetch(fin, {}); | |
1628 | return; | |
1629 | } | |
1630 | ||
7c673cae FG |
1631 | // merge results |
1632 | if (omap.empty()) { | |
1633 | omap.swap(omap_more); | |
1634 | } else { | |
1635 | omap.insert(omap_more.begin(), omap_more.end()); | |
1636 | } | |
1637 | if (more) { | |
f67539c2 | 1638 | dir->_omap_fetch_more(omap_version, hdrbl, omap, fin); |
7c673cae FG |
1639 | } else { |
1640 | dir->_omap_fetched(hdrbl, omap, !fin, r); | |
1641 | if (fin) | |
1642 | fin->complete(r); | |
1643 | } | |
1644 | } | |
91327a77 AA |
1645 | void print(ostream& out) const override { |
1646 | out << "dirfrag_fetch_more(" << dir->dirfrag() << ")"; | |
1647 | } | |
7c673cae FG |
1648 | }; |
1649 | ||
1650 | class C_IO_Dir_OMAP_Fetched : public CDirIOContext { | |
11fdf7f2 | 1651 | MDSContext *fin; |
7c673cae | 1652 | public: |
f67539c2 | 1653 | const version_t omap_version; |
7c673cae FG |
1654 | bufferlist hdrbl; |
1655 | bool more = false; | |
1656 | map<string, bufferlist> omap; | |
1657 | bufferlist btbl; | |
1658 | int ret1, ret2, ret3; | |
1659 | ||
11fdf7f2 | 1660 | C_IO_Dir_OMAP_Fetched(CDir *d, MDSContext *f) : |
f67539c2 TL |
1661 | CDirIOContext(d), fin(f), |
1662 | omap_version(d->get_committing_version()), | |
1663 | ret1(0), ret2(0), ret3(0) { } | |
7c673cae FG |
1664 | void finish(int r) override { |
1665 | // check the correctness of backtrace | |
f67539c2 | 1666 | if (r >= 0 && ret3 != -CEPHFS_ECANCELED) |
7c673cae FG |
1667 | dir->inode->verify_diri_backtrace(btbl, ret3); |
1668 | if (r >= 0) r = ret1; | |
1669 | if (r >= 0) r = ret2; | |
f67539c2 | 1670 | |
7c673cae | 1671 | if (more) { |
f67539c2 TL |
1672 | if (omap_version < dir->get_committed_version()) { |
1673 | omap.clear(); | |
1674 | dir->_omap_fetch(fin, {}); | |
1675 | } else { | |
1676 | dir->_omap_fetch_more(omap_version, hdrbl, omap, fin); | |
1677 | } | |
1678 | return; | |
7c673cae | 1679 | } |
f67539c2 TL |
1680 | |
1681 | dir->_omap_fetched(hdrbl, omap, !fin, r); | |
1682 | if (fin) | |
1683 | fin->complete(r); | |
1684 | ||
7c673cae | 1685 | } |
91327a77 AA |
1686 | void print(ostream& out) const override { |
1687 | out << "dirfrag_fetch(" << dir->dirfrag() << ")"; | |
1688 | } | |
7c673cae FG |
1689 | }; |
1690 | ||
11fdf7f2 | 1691 | void CDir::_omap_fetch(MDSContext *c, const std::set<dentry_key_t>& keys) |
7c673cae FG |
1692 | { |
1693 | C_IO_Dir_OMAP_Fetched *fin = new C_IO_Dir_OMAP_Fetched(this, c); | |
1694 | object_t oid = get_ondisk_object(); | |
f67539c2 | 1695 | object_locator_t oloc(mdcache->mds->mdsmap->get_metadata_pool()); |
7c673cae FG |
1696 | ObjectOperation rd; |
1697 | rd.omap_get_header(&fin->hdrbl, &fin->ret1); | |
1698 | if (keys.empty()) { | |
11fdf7f2 TL |
1699 | ceph_assert(!c); |
1700 | rd.omap_get_vals("", "", g_conf()->mds_dir_keys_per_op, | |
7c673cae FG |
1701 | &fin->omap, &fin->more, &fin->ret2); |
1702 | } else { | |
11fdf7f2 | 1703 | ceph_assert(c); |
7c673cae | 1704 | std::set<std::string> str_keys; |
94b18763 | 1705 | for (auto p : keys) { |
7c673cae | 1706 | string str; |
94b18763 | 1707 | p.encode(str); |
7c673cae FG |
1708 | str_keys.insert(str); |
1709 | } | |
1710 | rd.omap_get_vals_by_keys(str_keys, &fin->omap, &fin->ret2); | |
1711 | } | |
1712 | // check the correctness of backtrace | |
11fdf7f2 | 1713 | if (g_conf()->mds_verify_backtrace > 0 && frag == frag_t()) { |
7c673cae FG |
1714 | rd.getxattr("parent", &fin->btbl, &fin->ret3); |
1715 | rd.set_last_op_flags(CEPH_OSD_OP_FLAG_FAILOK); | |
1716 | } else { | |
f67539c2 | 1717 | fin->ret3 = -CEPHFS_ECANCELED; |
7c673cae FG |
1718 | } |
1719 | ||
f67539c2 TL |
1720 | mdcache->mds->objecter->read(oid, oloc, rd, CEPH_NOSNAP, NULL, 0, |
1721 | new C_OnFinisher(fin, mdcache->mds->finisher)); | |
7c673cae FG |
1722 | } |
1723 | ||
f67539c2 TL |
1724 | void CDir::_omap_fetch_more(version_t omap_version, bufferlist& hdrbl, |
1725 | map<string, bufferlist>& omap, MDSContext *c) | |
7c673cae FG |
1726 | { |
1727 | // we have more omap keys to fetch! | |
1728 | object_t oid = get_ondisk_object(); | |
f67539c2 TL |
1729 | object_locator_t oloc(mdcache->mds->mdsmap->get_metadata_pool()); |
1730 | auto fin = new C_IO_Dir_OMAP_FetchedMore(this, omap_version, c); | |
1731 | fin->hdrbl = std::move(hdrbl); | |
7c673cae FG |
1732 | fin->omap.swap(omap); |
1733 | ObjectOperation rd; | |
1734 | rd.omap_get_vals(fin->omap.rbegin()->first, | |
1735 | "", /* filter prefix */ | |
11fdf7f2 | 1736 | g_conf()->mds_dir_keys_per_op, |
7c673cae FG |
1737 | &fin->omap_more, |
1738 | &fin->more, | |
1739 | &fin->ret); | |
f67539c2 TL |
1740 | mdcache->mds->objecter->read(oid, oloc, rd, CEPH_NOSNAP, NULL, 0, |
1741 | new C_OnFinisher(fin, mdcache->mds->finisher)); | |
7c673cae FG |
1742 | } |
1743 | ||
1744 | CDentry *CDir::_load_dentry( | |
11fdf7f2 TL |
1745 | std::string_view key, |
1746 | std::string_view dname, | |
7c673cae FG |
1747 | const snapid_t last, |
1748 | bufferlist &bl, | |
1749 | const int pos, | |
1750 | const std::set<snapid_t> *snaps, | |
f91f0fd5 | 1751 | double rand_threshold, |
28e407b8 | 1752 | bool *force_dirty) |
7c673cae | 1753 | { |
11fdf7f2 | 1754 | auto q = bl.cbegin(); |
7c673cae FG |
1755 | |
1756 | snapid_t first; | |
11fdf7f2 | 1757 | decode(first, q); |
7c673cae FG |
1758 | |
1759 | // marker | |
1760 | char type; | |
11fdf7f2 | 1761 | decode(type, q); |
7c673cae FG |
1762 | |
1763 | dout(20) << "_fetched pos " << pos << " marker '" << type << "' dname '" << dname | |
1764 | << " [" << first << "," << last << "]" | |
1765 | << dendl; | |
1766 | ||
1767 | bool stale = false; | |
1768 | if (snaps && last != CEPH_NOSNAP) { | |
1769 | set<snapid_t>::const_iterator p = snaps->lower_bound(first); | |
1770 | if (p == snaps->end() || *p > last) { | |
1771 | dout(10) << " skipping stale dentry on [" << first << "," << last << "]" << dendl; | |
1772 | stale = true; | |
1773 | } | |
1774 | } | |
f67539c2 | 1775 | |
7c673cae FG |
1776 | /* |
1777 | * look for existing dentry for _last_ snap, because unlink + | |
1778 | * create may leave a "hole" (epochs during which the dentry | |
1779 | * doesn't exist) but for which no explicit negative dentry is in | |
1780 | * the cache. | |
1781 | */ | |
1782 | CDentry *dn; | |
1783 | if (stale) | |
1784 | dn = lookup_exact_snap(dname, last); | |
1785 | else | |
1786 | dn = lookup(dname, last); | |
1787 | ||
f67539c2 | 1788 | if (type == 'L' || type == 'l') { |
7c673cae FG |
1789 | // hard link |
1790 | inodeno_t ino; | |
1791 | unsigned char d_type; | |
f67539c2 TL |
1792 | mempool::mds_co::string alternate_name; |
1793 | ||
1794 | CDentry::decode_remote(type, ino, d_type, alternate_name, q); | |
7c673cae FG |
1795 | |
1796 | if (stale) { | |
1797 | if (!dn) { | |
94b18763 | 1798 | stale_items.insert(mempool::mds_co::string(key)); |
7c673cae FG |
1799 | *force_dirty = true; |
1800 | } | |
1801 | return dn; | |
1802 | } | |
1803 | ||
1804 | if (dn) { | |
28e407b8 AA |
1805 | CDentry::linkage_t *dnl = dn->get_linkage(); |
1806 | dout(12) << "_fetched had " << (dnl->is_null() ? "NEG" : "") << " dentry " << *dn << dendl; | |
1807 | if (committed_version == 0 && | |
1808 | dnl->is_remote() && | |
1809 | dn->is_dirty() && | |
1810 | ino == dnl->get_remote_ino() && | |
f67539c2 TL |
1811 | d_type == dnl->get_remote_d_type() && |
1812 | alternate_name == dn->get_alternate_name()) { | |
28e407b8 AA |
1813 | // see comment below |
1814 | dout(10) << "_fetched had underwater dentry " << *dn << ", marking clean" << dendl; | |
1815 | dn->mark_clean(); | |
7c673cae FG |
1816 | } |
1817 | } else { | |
1818 | // (remote) link | |
f67539c2 TL |
1819 | dn = add_remote_dentry(dname, ino, d_type, std::move(alternate_name), first, last); |
1820 | ||
7c673cae | 1821 | // link to inode? |
f67539c2 | 1822 | CInode *in = mdcache->get_inode(ino); // we may or may not have it. |
7c673cae FG |
1823 | if (in) { |
1824 | dn->link_remote(dn->get_linkage(), in); | |
1825 | dout(12) << "_fetched got remote link " << ino << " which we have " << *in << dendl; | |
1826 | } else { | |
11fdf7f2 | 1827 | dout(12) << "_fetched got remote link " << ino << " (don't have it)" << dendl; |
7c673cae FG |
1828 | } |
1829 | } | |
f67539c2 TL |
1830 | } |
1831 | else if (type == 'I' || type == 'i') { | |
1832 | InodeStore inode_data; | |
1833 | mempool::mds_co::string alternate_name; | |
7c673cae | 1834 | // inode |
7c673cae | 1835 | // Load inode data before looking up or constructing CInode |
f67539c2 TL |
1836 | if (type == 'i') { |
1837 | DECODE_START(2, q); | |
1838 | if (struct_v >= 2) { | |
1839 | decode(alternate_name, q); | |
1840 | } | |
1841 | inode_data.decode(q); | |
1842 | DECODE_FINISH(q); | |
1843 | } else { | |
1844 | inode_data.decode_bare(q); | |
1845 | } | |
1846 | ||
7c673cae FG |
1847 | if (stale) { |
1848 | if (!dn) { | |
94b18763 | 1849 | stale_items.insert(mempool::mds_co::string(key)); |
7c673cae FG |
1850 | *force_dirty = true; |
1851 | } | |
1852 | return dn; | |
1853 | } | |
1854 | ||
1855 | bool undef_inode = false; | |
1856 | if (dn) { | |
28e407b8 AA |
1857 | CDentry::linkage_t *dnl = dn->get_linkage(); |
1858 | dout(12) << "_fetched had " << (dnl->is_null() ? "NEG" : "") << " dentry " << *dn << dendl; | |
1859 | ||
1860 | if (dnl->is_primary()) { | |
1861 | CInode *in = dnl->get_inode(); | |
1862 | if (in->state_test(CInode::STATE_REJOINUNDEF)) { | |
1863 | undef_inode = true; | |
1864 | } else if (committed_version == 0 && | |
1865 | dn->is_dirty() && | |
f67539c2 TL |
1866 | inode_data.inode->ino == in->ino() && |
1867 | inode_data.inode->version == in->get_version()) { | |
28e407b8 AA |
1868 | /* clean underwater item? |
1869 | * Underwater item is something that is dirty in our cache from | |
1870 | * journal replay, but was previously flushed to disk before the | |
1871 | * mds failed. | |
1872 | * | |
1873 | * We only do this is committed_version == 0. that implies either | |
1874 | * - this is a fetch after from a clean/empty CDir is created | |
1875 | * (and has no effect, since the dn won't exist); or | |
1876 | * - this is a fetch after _recovery_, which is what we're worried | |
1877 | * about. Items that are marked dirty from the journal should be | |
1878 | * marked clean if they appear on disk. | |
1879 | */ | |
1880 | dout(10) << "_fetched had underwater dentry " << *dn << ", marking clean" << dendl; | |
1881 | dn->mark_clean(); | |
1882 | dout(10) << "_fetched had underwater inode " << *dnl->get_inode() << ", marking clean" << dendl; | |
1883 | in->mark_clean(); | |
1884 | } | |
1885 | } | |
7c673cae FG |
1886 | } |
1887 | ||
1888 | if (!dn || undef_inode) { | |
1889 | // add inode | |
f67539c2 | 1890 | CInode *in = mdcache->get_inode(inode_data.inode->ino, last); |
7c673cae FG |
1891 | if (!in || undef_inode) { |
1892 | if (undef_inode && in) | |
1893 | in->first = first; | |
1894 | else | |
f67539c2 | 1895 | in = new CInode(mdcache, true, first, last); |
7c673cae | 1896 | |
f67539c2 TL |
1897 | in->reset_inode(std::move(inode_data.inode)); |
1898 | in->reset_xattrs(std::move(inode_data.xattrs)); | |
7c673cae FG |
1899 | // symlink? |
1900 | if (in->is_symlink()) | |
1901 | in->symlink = inode_data.symlink; | |
1902 | ||
1903 | in->dirfragtree.swap(inode_data.dirfragtree); | |
f67539c2 TL |
1904 | in->reset_old_inodes(std::move(inode_data.old_inodes)); |
1905 | if (in->is_any_old_inodes()) { | |
1906 | snapid_t min_first = in->get_old_inodes()->rbegin()->first + 1; | |
7c673cae FG |
1907 | if (min_first > in->first) |
1908 | in->first = min_first; | |
1909 | } | |
1910 | ||
1911 | in->oldest_snap = inode_data.oldest_snap; | |
1912 | in->decode_snap_blob(inode_data.snap_blob); | |
1913 | if (snaps && !in->snaprealm) | |
1914 | in->purge_stale_snap_data(*snaps); | |
1915 | ||
1916 | if (!undef_inode) { | |
f67539c2 TL |
1917 | mdcache->add_inode(in); // add |
1918 | dn = add_primary_dentry(dname, in, std::move(alternate_name), first, last); // link | |
7c673cae FG |
1919 | } |
1920 | dout(12) << "_fetched got " << *dn << " " << *in << dendl; | |
1921 | ||
f67539c2 | 1922 | if (in->get_inode()->is_dirty_rstat()) |
7c673cae FG |
1923 | in->mark_dirty_rstat(); |
1924 | ||
f67539c2 | 1925 | in->maybe_ephemeral_rand(rand_threshold); |
7c673cae FG |
1926 | //in->hack_accessed = false; |
1927 | //in->hack_load_stamp = ceph_clock_now(); | |
1928 | //num_new_inodes_loaded++; | |
11fdf7f2 | 1929 | } else if (g_conf().get_val<bool>("mds_hack_allow_loading_invalid_metadata")) { |
94b18763 | 1930 | dout(20) << "hack: adding duplicate dentry for " << *in << dendl; |
f67539c2 | 1931 | dn = add_primary_dentry(dname, in, std::move(alternate_name), first, last); |
7c673cae FG |
1932 | } else { |
1933 | dout(0) << "_fetched badness: got (but i already had) " << *in | |
f67539c2 TL |
1934 | << " mode " << in->get_inode()->mode |
1935 | << " mtime " << in->get_inode()->mtime << dendl; | |
7c673cae FG |
1936 | string dirpath, inopath; |
1937 | this->inode->make_path_string(dirpath); | |
1938 | in->make_path_string(inopath); | |
f67539c2 TL |
1939 | mdcache->mds->clog->error() << "loaded dup inode " << inode_data.inode->ino |
1940 | << " [" << first << "," << last << "] v" << inode_data.inode->version | |
7c673cae | 1941 | << " at " << dirpath << "/" << dname |
f67539c2 | 1942 | << ", but inode " << in->vino() << " v" << in->get_version() |
7c673cae FG |
1943 | << " already exists at " << inopath; |
1944 | return dn; | |
1945 | } | |
1946 | } | |
1947 | } else { | |
f67539c2 TL |
1948 | CachedStackStringStream css; |
1949 | *css << "Invalid tag char '" << type << "' pos " << pos; | |
1950 | throw buffer::malformed_input(css->str()); | |
7c673cae FG |
1951 | } |
1952 | ||
1953 | return dn; | |
1954 | } | |
1955 | ||
1956 | void CDir::_omap_fetched(bufferlist& hdrbl, map<string, bufferlist>& omap, | |
1957 | bool complete, int r) | |
1958 | { | |
f67539c2 | 1959 | LogChannelRef clog = mdcache->mds->clog; |
7c673cae FG |
1960 | dout(10) << "_fetched header " << hdrbl.length() << " bytes " |
1961 | << omap.size() << " keys for " << *this << dendl; | |
1962 | ||
f67539c2 | 1963 | ceph_assert(r == 0 || r == -CEPHFS_ENOENT || r == -CEPHFS_ENODATA); |
11fdf7f2 TL |
1964 | ceph_assert(is_auth()); |
1965 | ceph_assert(!is_frozen()); | |
7c673cae FG |
1966 | |
1967 | if (hdrbl.length() == 0) { | |
1968 | dout(0) << "_fetched missing object for " << *this << dendl; | |
1969 | ||
1970 | clog->error() << "dir " << dirfrag() << " object missing on disk; some " | |
1971 | "files may be lost (" << get_path() << ")"; | |
1972 | ||
1973 | go_bad(complete); | |
1974 | return; | |
1975 | } | |
1976 | ||
1977 | fnode_t got_fnode; | |
1978 | { | |
11fdf7f2 | 1979 | auto p = hdrbl.cbegin(); |
7c673cae | 1980 | try { |
11fdf7f2 | 1981 | decode(got_fnode, p); |
7c673cae FG |
1982 | } catch (const buffer::error &err) { |
1983 | derr << "Corrupt fnode in dirfrag " << dirfrag() | |
f67539c2 | 1984 | << ": " << err.what() << dendl; |
7c673cae | 1985 | clog->warn() << "Corrupt fnode header in " << dirfrag() << ": " |
f67539c2 | 1986 | << err.what() << " (" << get_path() << ")"; |
7c673cae FG |
1987 | go_bad(complete); |
1988 | return; | |
1989 | } | |
1990 | if (!p.end()) { | |
1991 | clog->warn() << "header buffer of dir " << dirfrag() << " has " | |
1992 | << hdrbl.length() - p.get_off() << " extra bytes (" | |
1993 | << get_path() << ")"; | |
1994 | go_bad(complete); | |
1995 | return; | |
1996 | } | |
1997 | } | |
1998 | ||
1999 | dout(10) << "_fetched version " << got_fnode.version << dendl; | |
2000 | ||
2001 | // take the loaded fnode? | |
2002 | // only if we are a fresh CDir* with no prior state. | |
2003 | if (get_version() == 0) { | |
11fdf7f2 TL |
2004 | ceph_assert(!is_projected()); |
2005 | ceph_assert(!state_test(STATE_COMMITTING)); | |
f67539c2 TL |
2006 | auto _fnode = allocate_fnode(got_fnode); |
2007 | reset_fnode(std::move(_fnode)); | |
2008 | projected_version = committing_version = committed_version = get_version(); | |
7c673cae FG |
2009 | |
2010 | if (state_test(STATE_REJOINUNDEF)) { | |
f67539c2 | 2011 | ceph_assert(mdcache->mds->is_rejoin()); |
7c673cae | 2012 | state_clear(STATE_REJOINUNDEF); |
f67539c2 | 2013 | mdcache->opened_undef_dirfrag(this); |
7c673cae FG |
2014 | } |
2015 | } | |
2016 | ||
2017 | list<CInode*> undef_inodes; | |
2018 | ||
2019 | // purge stale snaps? | |
7c673cae FG |
2020 | bool force_dirty = false; |
2021 | const set<snapid_t> *snaps = NULL; | |
2022 | SnapRealm *realm = inode->find_snaprealm(); | |
f67539c2 | 2023 | if (fnode->snap_purged_thru < realm->get_last_destroyed()) { |
7c673cae | 2024 | snaps = &realm->get_snaps(); |
f67539c2 | 2025 | dout(10) << " snap_purged_thru " << fnode->snap_purged_thru |
7c673cae FG |
2026 | << " < " << realm->get_last_destroyed() |
2027 | << ", snap purge based on " << *snaps << dendl; | |
2028 | if (get_num_snap_items() == 0) { | |
f67539c2 | 2029 | const_cast<snapid_t&>(fnode->snap_purged_thru) = realm->get_last_destroyed(); |
7c673cae FG |
2030 | force_dirty = true; |
2031 | } | |
2032 | } | |
2033 | ||
2034 | unsigned pos = omap.size() - 1; | |
f91f0fd5 | 2035 | double rand_threshold = get_inode()->get_ephemeral_rand(); |
7c673cae FG |
2036 | for (map<string, bufferlist>::reverse_iterator p = omap.rbegin(); |
2037 | p != omap.rend(); | |
2038 | ++p, --pos) { | |
2039 | string dname; | |
2040 | snapid_t last; | |
2041 | dentry_key_t::decode_helper(p->first, dname, last); | |
2042 | ||
2043 | CDentry *dn = NULL; | |
2044 | try { | |
2045 | dn = _load_dentry( | |
2046 | p->first, dname, last, p->second, pos, snaps, | |
f91f0fd5 | 2047 | rand_threshold, &force_dirty); |
7c673cae | 2048 | } catch (const buffer::error &err) { |
f67539c2 | 2049 | mdcache->mds->clog->warn() << "Corrupt dentry '" << dname << "' in " |
7c673cae | 2050 | "dir frag " << dirfrag() << ": " |
f67539c2 | 2051 | << err.what() << "(" << get_path() << ")"; |
7c673cae FG |
2052 | |
2053 | // Remember that this dentry is damaged. Subsequent operations | |
f67539c2 | 2054 | // that try to act directly on it will get their CEPHFS_EIOs, but this |
7c673cae FG |
2055 | // dirfrag as a whole will continue to look okay (minus the |
2056 | // mysteriously-missing dentry) | |
2057 | go_bad_dentry(last, dname); | |
2058 | ||
2059 | // Anyone who was WAIT_DENTRY for this guy will get kicked | |
2060 | // to RetryRequest, and hit the DamageTable-interrogating path. | |
2061 | // Stats will now be bogus because we will think we're complete, | |
2062 | // but have 1 or more missing dentries. | |
2063 | continue; | |
2064 | } | |
2065 | ||
28e407b8 AA |
2066 | if (!dn) |
2067 | continue; | |
7c673cae | 2068 | |
28e407b8 AA |
2069 | CDentry::linkage_t *dnl = dn->get_linkage(); |
2070 | if (dnl->is_primary() && dnl->get_inode()->state_test(CInode::STATE_REJOINUNDEF)) | |
2071 | undef_inodes.push_back(dnl->get_inode()); | |
7c673cae | 2072 | |
11fdf7f2 | 2073 | if (wanted_items.count(mempool::mds_co::string(dname)) > 0 || !complete) { |
28e407b8 | 2074 | dout(10) << " touching wanted dn " << *dn << dendl; |
f67539c2 | 2075 | mdcache->touch_dentry(dn); |
7c673cae FG |
2076 | } |
2077 | } | |
2078 | ||
2079 | //cache->mds->logger->inc("newin", num_new_inodes_loaded); | |
2080 | ||
2081 | // mark complete, !fetching | |
2082 | if (complete) { | |
2083 | wanted_items.clear(); | |
2084 | mark_complete(); | |
2085 | state_clear(STATE_FETCHING); | |
7c673cae FG |
2086 | } |
2087 | ||
2088 | // open & force frags | |
2089 | while (!undef_inodes.empty()) { | |
2090 | CInode *in = undef_inodes.front(); | |
2091 | undef_inodes.pop_front(); | |
2092 | in->state_clear(CInode::STATE_REJOINUNDEF); | |
f67539c2 | 2093 | mdcache->opened_undef_inode(in); |
7c673cae FG |
2094 | } |
2095 | ||
2096 | // dirty myself to remove stale snap dentries | |
f67539c2 | 2097 | if (force_dirty && !mdcache->is_readonly()) |
7c673cae FG |
2098 | log_mark_dirty(); |
2099 | ||
2100 | auth_unpin(this); | |
2101 | ||
2102 | if (complete) { | |
2103 | // kick waiters | |
2104 | finish_waiting(WAIT_COMPLETE, 0); | |
2105 | } | |
2106 | } | |
2107 | ||
11fdf7f2 | 2108 | void CDir::go_bad_dentry(snapid_t last, std::string_view dname) |
7c673cae | 2109 | { |
94b18763 FG |
2110 | dout(10) << __func__ << " " << dname << dendl; |
2111 | std::string path(get_path()); | |
2112 | path += "/"; | |
11fdf7f2 | 2113 | path += dname; |
f67539c2 | 2114 | const bool fatal = mdcache->mds->damage_table.notify_dentry( |
94b18763 | 2115 | inode->ino(), frag, last, dname, path); |
7c673cae | 2116 | if (fatal) { |
f67539c2 | 2117 | mdcache->mds->damaged(); |
7c673cae FG |
2118 | ceph_abort(); // unreachable, damaged() respawns us |
2119 | } | |
2120 | } | |
2121 | ||
2122 | void CDir::go_bad(bool complete) | |
2123 | { | |
11fdf7f2 | 2124 | dout(10) << __func__ << " " << frag << dendl; |
f67539c2 | 2125 | const bool fatal = mdcache->mds->damage_table.notify_dirfrag( |
7c673cae FG |
2126 | inode->ino(), frag, get_path()); |
2127 | if (fatal) { | |
f67539c2 | 2128 | mdcache->mds->damaged(); |
7c673cae FG |
2129 | ceph_abort(); // unreachable, damaged() respawns us |
2130 | } | |
2131 | ||
f91f0fd5 | 2132 | if (complete) { |
f67539c2 TL |
2133 | if (get_version() == 0) { |
2134 | auto _fnode = allocate_fnode(); | |
2135 | _fnode->version = 1; | |
2136 | reset_fnode(std::move(_fnode)); | |
2137 | } | |
f91f0fd5 TL |
2138 | |
2139 | state_set(STATE_BADFRAG); | |
2140 | mark_complete(); | |
2141 | } | |
2142 | ||
2143 | state_clear(STATE_FETCHING); | |
2144 | auth_unpin(this); | |
f67539c2 | 2145 | finish_waiting(WAIT_COMPLETE, -CEPHFS_EIO); |
7c673cae FG |
2146 | } |
2147 | ||
2148 | // ----------------------- | |
2149 | // COMMIT | |
2150 | ||
2151 | /** | |
2152 | * commit | |
2153 | * | |
2154 | * @param want - min version i want committed | |
2155 | * @param c - callback for completion | |
2156 | */ | |
11fdf7f2 | 2157 | void CDir::commit(version_t want, MDSContext *c, bool ignore_authpinnability, int op_prio) |
7c673cae FG |
2158 | { |
2159 | dout(10) << "commit want " << want << " on " << *this << dendl; | |
2160 | if (want == 0) want = get_version(); | |
2161 | ||
2162 | // preconditions | |
11fdf7f2 TL |
2163 | ceph_assert(want <= get_version() || get_version() == 0); // can't commit the future |
2164 | ceph_assert(want > committed_version); // the caller is stupid | |
2165 | ceph_assert(is_auth()); | |
2166 | ceph_assert(ignore_authpinnability || can_auth_pin()); | |
7c673cae | 2167 | |
7c673cae FG |
2168 | // note: queue up a noop if necessary, so that we always |
2169 | // get an auth_pin. | |
2170 | if (!c) | |
2171 | c = new C_MDSInternalNoop; | |
2172 | ||
2173 | // auth_pin on first waiter | |
2174 | if (waiting_for_commit.empty()) | |
2175 | auth_pin(this); | |
2176 | waiting_for_commit[want].push_back(c); | |
2177 | ||
2178 | // ok. | |
2179 | _commit(want, op_prio); | |
2180 | } | |
2181 | ||
2182 | class C_IO_Dir_Committed : public CDirIOContext { | |
2183 | version_t version; | |
2184 | public: | |
2185 | C_IO_Dir_Committed(CDir *d, version_t v) : CDirIOContext(d), version(v) { } | |
2186 | void finish(int r) override { | |
2187 | dir->_committed(r, version); | |
2188 | } | |
91327a77 | 2189 | void print(ostream& out) const override { |
f67539c2 TL |
2190 | out << "dirfrag_committed(" << dir->dirfrag() << ")"; |
2191 | } | |
2192 | }; | |
2193 | ||
2194 | class C_IO_Dir_Commit_Ops : public Context { | |
2195 | public: | |
2196 | C_IO_Dir_Commit_Ops(CDir *d, int pr, | |
2197 | vector<CDir::dentry_commit_item> &&s, bufferlist &&bl, | |
2198 | vector<string> &&r, | |
2199 | mempool::mds_co::compact_set<mempool::mds_co::string> &&stales) : | |
2200 | dir(d), op_prio(pr) { | |
b3b6e05e | 2201 | metapool = dir->mdcache->mds->get_metadata_pool(); |
f67539c2 TL |
2202 | version = dir->get_version(); |
2203 | is_new = dir->is_new(); | |
2204 | to_set.swap(s); | |
2205 | dfts.swap(bl); | |
2206 | to_remove.swap(r); | |
2207 | stale_items.swap(stales); | |
91327a77 | 2208 | } |
f67539c2 TL |
2209 | |
2210 | void finish(int r) override { | |
2211 | dir->_omap_commit_ops(r, op_prio, metapool, version, is_new, to_set, dfts, | |
2212 | to_remove, stale_items); | |
2213 | } | |
2214 | ||
2215 | private: | |
2216 | CDir *dir; | |
2217 | int op_prio; | |
2218 | int64_t metapool; | |
2219 | version_t version; | |
2220 | bool is_new; | |
2221 | vector<CDir::dentry_commit_item> to_set; | |
2222 | bufferlist dfts; | |
2223 | vector<string> to_remove; | |
2224 | mempool::mds_co::compact_set<mempool::mds_co::string> stale_items; | |
7c673cae FG |
2225 | }; |
2226 | ||
f67539c2 TL |
2227 | // This is doing the same thing with the InodeStoreBase::encode() |
2228 | void CDir::_encode_primary_inode_base(dentry_commit_item &item, bufferlist &dfts, | |
2229 | bufferlist &bl) | |
2230 | { | |
2231 | ENCODE_START(6, 4, bl); | |
2232 | encode(*item.inode, bl, item.features); | |
2233 | ||
2234 | if (!item.symlink.empty()) | |
2235 | encode(item.symlink, bl); | |
2236 | ||
2237 | // dirfragtree | |
2238 | dfts.splice(0, item.dft_len, &bl); | |
2239 | ||
2240 | if (item.xattrs) | |
2241 | encode(*item.xattrs, bl); | |
2242 | else | |
2243 | encode((__u32)0, bl); | |
2244 | ||
2245 | if (item.snaprealm) { | |
2246 | bufferlist snapr_bl; | |
2247 | encode(item.srnode, snapr_bl); | |
2248 | encode(snapr_bl, bl); | |
2249 | } else { | |
2250 | encode(bufferlist(), bl); | |
2251 | } | |
2252 | ||
2253 | if (item.old_inodes) | |
2254 | encode(*item.old_inodes, bl, item.features); | |
2255 | else | |
2256 | encode((__u32)0, bl); | |
2257 | ||
2258 | encode(item.oldest_snap, bl); | |
2259 | encode(item.damage_flags, bl); | |
2260 | ENCODE_FINISH(bl); | |
2261 | } | |
2262 | ||
2263 | // This is not locked by mds_lock | |
2264 | void CDir::_omap_commit_ops(int r, int op_prio, int64_t metapool, version_t version, bool _new, | |
2265 | vector<dentry_commit_item> &to_set, bufferlist &dfts, | |
2266 | vector<string>& to_remove, | |
2267 | mempool::mds_co::compact_set<mempool::mds_co::string> &stales) | |
2268 | { | |
2269 | dout(10) << __func__ << dendl; | |
2270 | ||
2271 | if (r < 0) { | |
2272 | mdcache->mds->handle_write_error_with_lock(r); | |
2273 | return; | |
2274 | } | |
2275 | ||
2276 | C_GatherBuilder gather(g_ceph_context, | |
2277 | new C_OnFinisher(new C_IO_Dir_Committed(this, version), | |
2278 | mdcache->mds->finisher)); | |
2279 | ||
2280 | SnapContext snapc; | |
2281 | object_t oid = get_ondisk_object(); | |
2282 | object_locator_t oloc(metapool); | |
2283 | ||
2284 | map<string, bufferlist> _set; | |
2285 | set<string> _rm; | |
2286 | ||
2287 | unsigned max_write_size = mdcache->max_dir_commit_size; | |
2288 | unsigned write_size = 0; | |
2289 | ||
2290 | auto commit_one = [&](bool header=false) { | |
2291 | ObjectOperation op; | |
2292 | ||
2293 | // don't create new dirfrag blindly | |
2294 | if (!_new) | |
2295 | op.stat(nullptr, nullptr, nullptr); | |
2296 | ||
2297 | /* | |
2298 | * save the header at the last moment.. If we were to send it off before | |
2299 | * other updates, but die before sending them all, we'd think that the | |
2300 | * on-disk state was fully committed even though it wasn't! However, since | |
2301 | * the messages are strictly ordered between the MDS and the OSD, and | |
2302 | * since messages to a given PG are strictly ordered, if we simply send | |
2303 | * the message containing the header off last, we cannot get our header | |
2304 | * into an incorrect state. | |
2305 | */ | |
2306 | if (header) { | |
2307 | bufferlist header; | |
2308 | encode(*fnode, header); | |
2309 | op.omap_set_header(header); | |
2310 | } | |
2311 | ||
2312 | op.priority = op_prio; | |
2313 | if (!_set.empty()) | |
2314 | op.omap_set(_set); | |
2315 | if (!_rm.empty()) | |
2316 | op.omap_rm_keys(_rm); | |
2317 | mdcache->mds->objecter->mutate(oid, oloc, op, snapc, | |
2318 | ceph::real_clock::now(), | |
2319 | 0, gather.new_sub()); | |
2320 | write_size = 0; | |
2321 | _set.clear(); | |
2322 | _rm.clear(); | |
2323 | }; | |
2324 | ||
2325 | for (auto &key : stales) { | |
2326 | unsigned size = key.length() + sizeof(__u32); | |
2327 | if (write_size + size > max_write_size) | |
2328 | commit_one(); | |
2329 | ||
2330 | write_size += size; | |
2331 | _rm.emplace(key); | |
2332 | } | |
2333 | ||
2334 | for (auto &key : to_remove) { | |
2335 | unsigned size = key.length() + sizeof(__u32); | |
2336 | if (write_size + size > max_write_size) | |
2337 | commit_one(); | |
2338 | ||
2339 | write_size += size; | |
2340 | _rm.emplace(std::move(key)); | |
2341 | } | |
2342 | ||
2343 | uint64_t off = 0; | |
2344 | bufferlist bl; | |
2345 | using ceph::encode; | |
2346 | for (auto &item : to_set) { | |
2347 | encode(item.first, bl); | |
2348 | if (item.is_remote) { | |
2349 | // remote link | |
2350 | CDentry::encode_remote(item.ino, item.d_type, item.alternate_name, bl); | |
2351 | } else { | |
2352 | // marker, name, inode, [symlink string] | |
2353 | bl.append('i'); // inode | |
2354 | ||
2355 | ENCODE_START(2, 1, bl); | |
2356 | encode(item.alternate_name, bl); | |
2357 | _encode_primary_inode_base(item, dfts, bl); | |
2358 | ENCODE_FINISH(bl); | |
2359 | } | |
2360 | off += item.dft_len; | |
2361 | ||
2362 | unsigned size = item.key.length() + bl.length() + 2 * sizeof(__u32); | |
2363 | if (write_size + size > max_write_size) | |
2364 | commit_one(); | |
2365 | ||
2366 | write_size += size; | |
2367 | _set[std::move(item.key)].swap(bl); | |
2368 | } | |
2369 | ||
2370 | commit_one(true); | |
2371 | gather.activate(); | |
2372 | } | |
2373 | ||
7c673cae FG |
2374 | /** |
2375 | * Flush out the modified dentries in this dir. Keep the bufferlist | |
2376 | * below max_write_size; | |
2377 | */ | |
2378 | void CDir::_omap_commit(int op_prio) | |
2379 | { | |
11fdf7f2 | 2380 | dout(10) << __func__ << dendl; |
7c673cae | 2381 | |
7c673cae FG |
2382 | if (op_prio < 0) |
2383 | op_prio = CEPH_MSG_PRIO_DEFAULT; | |
2384 | ||
2385 | // snap purge? | |
2386 | const set<snapid_t> *snaps = NULL; | |
2387 | SnapRealm *realm = inode->find_snaprealm(); | |
f67539c2 | 2388 | if (fnode->snap_purged_thru < realm->get_last_destroyed()) { |
7c673cae | 2389 | snaps = &realm->get_snaps(); |
f67539c2 | 2390 | dout(10) << " snap_purged_thru " << fnode->snap_purged_thru |
7c673cae FG |
2391 | << " < " << realm->get_last_destroyed() |
2392 | << ", snap purge based on " << *snaps << dendl; | |
2393 | // fnode.snap_purged_thru = realm->get_last_destroyed(); | |
2394 | } | |
2395 | ||
f67539c2 TL |
2396 | size_t count = 0; |
2397 | if (state_test(CDir::STATE_FRAGMENTING) && is_new()) { | |
2398 | count = get_num_head_items() + get_num_snap_items(); | |
2399 | } else { | |
2400 | for (elist<CDentry*>::iterator it = dirty_dentries.begin(); !it.end(); ++it) | |
2401 | ++count; | |
2402 | } | |
7c673cae | 2403 | |
f67539c2 TL |
2404 | vector<string> to_remove; |
2405 | // reverve enough memories, which maybe larger than the actually needed | |
2406 | to_remove.reserve(count); | |
7c673cae | 2407 | |
f67539c2 TL |
2408 | vector<dentry_commit_item> to_set; |
2409 | // reverve enough memories, which maybe larger than the actually needed | |
2410 | to_set.reserve(count); | |
7c673cae | 2411 | |
f67539c2 TL |
2412 | // for dir fragtrees |
2413 | bufferlist dfts(CEPH_PAGE_SIZE); | |
7c673cae | 2414 | |
b32b8144 | 2415 | auto write_one = [&](CDentry *dn) { |
7c673cae FG |
2416 | string key; |
2417 | dn->key().encode(key); | |
2418 | ||
2419 | if (dn->last != CEPH_NOSNAP && | |
2420 | snaps && try_trim_snap_dentry(dn, *snaps)) { | |
2421 | dout(10) << " rm " << key << dendl; | |
f67539c2 | 2422 | to_remove.emplace_back(std::move(key)); |
b32b8144 | 2423 | return; |
7c673cae FG |
2424 | } |
2425 | ||
7c673cae | 2426 | if (dn->get_linkage()->is_null()) { |
94b18763 | 2427 | dout(10) << " rm " << dn->get_name() << " " << *dn << dendl; |
f67539c2 | 2428 | to_remove.emplace_back(std::move(key)); |
7c673cae | 2429 | } else { |
94b18763 | 2430 | dout(10) << " set " << dn->get_name() << " " << *dn << dendl; |
7c673cae | 2431 | |
f67539c2 TL |
2432 | uint64_t off = dfts.length(); |
2433 | // try to reserve new size if there has less | |
2434 | // than 1/8 page space | |
2435 | uint64_t left = CEPH_PAGE_SIZE - off % CEPH_PAGE_SIZE; | |
2436 | if (left < CEPH_PAGE_SIZE / 8) | |
2437 | dfts.reserve(left + CEPH_PAGE_SIZE); | |
7c673cae | 2438 | |
f67539c2 TL |
2439 | auto& item = to_set.emplace_back(); |
2440 | item.key = std::move(key); | |
2441 | _parse_dentry(dn, item, snaps, dfts); | |
2442 | item.dft_len = dfts.length() - off; | |
7c673cae | 2443 | } |
b32b8144 FG |
2444 | }; |
2445 | ||
f91f0fd5 TL |
2446 | if (state_test(CDir::STATE_FRAGMENTING) && is_new()) { |
2447 | assert(committed_version == 0); | |
b32b8144 FG |
2448 | for (auto p = items.begin(); p != items.end(); ) { |
2449 | CDentry *dn = p->second; | |
2450 | ++p; | |
f91f0fd5 | 2451 | if (dn->get_linkage()->is_null()) |
b32b8144 FG |
2452 | continue; |
2453 | write_one(dn); | |
2454 | } | |
2455 | } else { | |
2456 | for (auto p = dirty_dentries.begin(); !p.end(); ) { | |
2457 | CDentry *dn = *p; | |
2458 | ++p; | |
2459 | write_one(dn); | |
2460 | } | |
7c673cae FG |
2461 | } |
2462 | ||
f67539c2 TL |
2463 | auto c = new C_IO_Dir_Commit_Ops(this, op_prio, std::move(to_set), std::move(dfts), |
2464 | std::move(to_remove), std::move(stale_items)); | |
2465 | stale_items.clear(); | |
2466 | mdcache->mds->finisher->queue(c); | |
7c673cae FG |
2467 | } |
2468 | ||
f67539c2 TL |
2469 | void CDir::_parse_dentry(CDentry *dn, dentry_commit_item &item, |
2470 | const set<snapid_t> *snaps, bufferlist &bl) | |
7c673cae FG |
2471 | { |
2472 | // clear dentry NEW flag, if any. we can no longer silently drop it. | |
2473 | dn->clear_new(); | |
2474 | ||
f67539c2 | 2475 | item.first = dn->first; |
7c673cae FG |
2476 | |
2477 | // primary or remote? | |
f67539c2 TL |
2478 | auto& linkage = dn->linkage; |
2479 | item.alternate_name = dn->get_alternate_name(); | |
2480 | if (linkage.is_remote()) { | |
2481 | item.is_remote = true; | |
2482 | item.ino = linkage.get_remote_ino(); | |
2483 | item.d_type = linkage.get_remote_d_type(); | |
2484 | dout(14) << " dn '" << dn->get_name() << "' remote ino " << item.ino << dendl; | |
2485 | } else if (linkage.is_primary()) { | |
7c673cae | 2486 | // primary link |
f67539c2 | 2487 | CInode *in = linkage.get_inode(); |
11fdf7f2 | 2488 | ceph_assert(in); |
f67539c2 TL |
2489 | |
2490 | dout(14) << " dn '" << dn->get_name() << "' inode " << *in << dendl; | |
7c673cae FG |
2491 | |
2492 | if (in->is_multiversion()) { | |
2493 | if (!in->snaprealm) { | |
2494 | if (snaps) | |
2495 | in->purge_stale_snap_data(*snaps); | |
f67539c2 | 2496 | } else { |
7c673cae FG |
2497 | in->purge_stale_snap_data(in->snaprealm->get_snaps()); |
2498 | } | |
2499 | } | |
2500 | ||
f67539c2 TL |
2501 | if (in->snaprealm) { |
2502 | item.snaprealm = true; | |
2503 | item.srnode = in->snaprealm->srnode; | |
2504 | } | |
2505 | item.features = mdcache->mds->mdsmap->get_up_features(); | |
2506 | item.inode = in->inode; | |
2507 | if (in->inode->is_symlink()) | |
2508 | item.symlink = in->symlink; | |
2509 | using ceph::encode; | |
2510 | encode(in->dirfragtree, bl); | |
2511 | item.xattrs = in->xattrs; | |
2512 | item.old_inodes = in->old_inodes; | |
2513 | item.oldest_snap = in->oldest_snap; | |
2514 | item.damage_flags = in->damage_flags; | |
7c673cae | 2515 | } else { |
f67539c2 | 2516 | ceph_assert(!linkage.is_null()); |
7c673cae FG |
2517 | } |
2518 | } | |
2519 | ||
2520 | void CDir::_commit(version_t want, int op_prio) | |
2521 | { | |
2522 | dout(10) << "_commit want " << want << " on " << *this << dendl; | |
2523 | ||
2524 | // we can't commit things in the future. | |
2525 | // (even the projected future.) | |
11fdf7f2 | 2526 | ceph_assert(want <= get_version() || get_version() == 0); |
7c673cae FG |
2527 | |
2528 | // check pre+postconditions. | |
11fdf7f2 | 2529 | ceph_assert(is_auth()); |
7c673cae FG |
2530 | |
2531 | // already committed? | |
2532 | if (committed_version >= want) { | |
2533 | dout(10) << "already committed " << committed_version << " >= " << want << dendl; | |
2534 | return; | |
2535 | } | |
2536 | // already committing >= want? | |
2537 | if (committing_version >= want) { | |
2538 | dout(10) << "already committing " << committing_version << " >= " << want << dendl; | |
11fdf7f2 | 2539 | ceph_assert(state_test(STATE_COMMITTING)); |
7c673cae FG |
2540 | return; |
2541 | } | |
2542 | ||
2543 | // alrady committed an older version? | |
2544 | if (committing_version > committed_version) { | |
2545 | dout(10) << "already committing older " << committing_version << ", waiting for that to finish" << dendl; | |
2546 | return; | |
2547 | } | |
2548 | ||
2549 | // commit. | |
2550 | committing_version = get_version(); | |
2551 | ||
2552 | // mark committing (if not already) | |
2553 | if (!state_test(STATE_COMMITTING)) { | |
2554 | dout(10) << "marking committing" << dendl; | |
2555 | state_set(STATE_COMMITTING); | |
2556 | } | |
2557 | ||
f67539c2 | 2558 | if (mdcache->mds->logger) mdcache->mds->logger->inc(l_mds_dir_commit); |
7c673cae | 2559 | |
522d829b TL |
2560 | mdcache->mds->balancer->hit_dir(this, META_POP_STORE); |
2561 | ||
7c673cae FG |
2562 | _omap_commit(op_prio); |
2563 | } | |
2564 | ||
2565 | ||
2566 | /** | |
2567 | * _committed | |
2568 | * | |
2569 | * @param v version i just committed | |
2570 | */ | |
2571 | void CDir::_committed(int r, version_t v) | |
2572 | { | |
2573 | if (r < 0) { | |
2574 | // the directory could be partly purged during MDS failover | |
f67539c2 | 2575 | if (r == -CEPHFS_ENOENT && committed_version == 0 && |
31f18b77 | 2576 | !inode->is_base() && get_parent_dir()->inode->is_stray()) { |
7c673cae | 2577 | r = 0; |
31f18b77 FG |
2578 | if (inode->snaprealm) |
2579 | inode->state_set(CInode::STATE_MISSINGOBJS); | |
7c673cae FG |
2580 | } |
2581 | if (r < 0) { | |
2582 | dout(1) << "commit error " << r << " v " << v << dendl; | |
f67539c2 | 2583 | mdcache->mds->clog->error() << "failed to commit dir " << dirfrag() << " object," |
7c673cae | 2584 | << " errno " << r; |
f67539c2 | 2585 | mdcache->mds->handle_write_error(r); |
7c673cae FG |
2586 | return; |
2587 | } | |
2588 | } | |
2589 | ||
2590 | dout(10) << "_committed v " << v << " on " << *this << dendl; | |
11fdf7f2 | 2591 | ceph_assert(is_auth()); |
7c673cae FG |
2592 | |
2593 | bool stray = inode->is_stray(); | |
2594 | ||
2595 | // take note. | |
11fdf7f2 TL |
2596 | ceph_assert(v > committed_version); |
2597 | ceph_assert(v <= committing_version); | |
7c673cae FG |
2598 | committed_version = v; |
2599 | ||
2600 | // _all_ commits done? | |
2601 | if (committing_version == committed_version) | |
2602 | state_clear(CDir::STATE_COMMITTING); | |
2603 | ||
2604 | // _any_ commit, even if we've been redirtied, means we're no longer new. | |
2605 | item_new.remove_myself(); | |
2606 | ||
2607 | // dir clean? | |
2608 | if (committed_version == get_version()) | |
2609 | mark_clean(); | |
2610 | ||
2611 | // dentries clean? | |
b32b8144 FG |
2612 | for (auto p = dirty_dentries.begin(); !p.end(); ) { |
2613 | CDentry *dn = *p; | |
2614 | ++p; | |
7c673cae FG |
2615 | |
2616 | // inode? | |
2617 | if (dn->linkage.is_primary()) { | |
2618 | CInode *in = dn->linkage.get_inode(); | |
11fdf7f2 TL |
2619 | ceph_assert(in); |
2620 | ceph_assert(in->is_auth()); | |
7c673cae FG |
2621 | |
2622 | if (committed_version >= in->get_version()) { | |
2623 | if (in->is_dirty()) { | |
2624 | dout(15) << " dir " << committed_version << " >= inode " << in->get_version() << " now clean " << *in << dendl; | |
2625 | in->mark_clean(); | |
2626 | } | |
2627 | } else { | |
2628 | dout(15) << " dir " << committed_version << " < inode " << in->get_version() << " still dirty " << *in << dendl; | |
11fdf7f2 | 2629 | ceph_assert(in->is_dirty() || in->last < CEPH_NOSNAP); // special case for cow snap items (not predirtied) |
7c673cae FG |
2630 | } |
2631 | } | |
2632 | ||
2633 | // dentry | |
2634 | if (committed_version >= dn->get_version()) { | |
b32b8144 FG |
2635 | dout(15) << " dir " << committed_version << " >= dn " << dn->get_version() << " now clean " << *dn << dendl; |
2636 | dn->mark_clean(); | |
7c673cae | 2637 | |
b32b8144 FG |
2638 | // drop clean null stray dentries immediately |
2639 | if (stray && | |
2640 | dn->get_num_ref() == 0 && | |
2641 | !dn->is_projected() && | |
2642 | dn->get_linkage()->is_null()) | |
2643 | remove_dentry(dn); | |
7c673cae FG |
2644 | } else { |
2645 | dout(15) << " dir " << committed_version << " < dn " << dn->get_version() << " still dirty " << *dn << dendl; | |
11fdf7f2 | 2646 | ceph_assert(dn->is_dirty()); |
7c673cae FG |
2647 | } |
2648 | } | |
2649 | ||
2650 | // finishers? | |
2651 | bool were_waiters = !waiting_for_commit.empty(); | |
2652 | ||
94b18763 FG |
2653 | auto it = waiting_for_commit.begin(); |
2654 | while (it != waiting_for_commit.end()) { | |
2655 | auto _it = it; | |
2656 | ++_it; | |
2657 | if (it->first > committed_version) { | |
2658 | dout(10) << " there are waiters for " << it->first << ", committing again" << dendl; | |
2659 | _commit(it->first, -1); | |
7c673cae FG |
2660 | break; |
2661 | } | |
11fdf7f2 | 2662 | MDSContext::vec t; |
94b18763 FG |
2663 | for (const auto &waiter : it->second) |
2664 | t.push_back(waiter); | |
f67539c2 | 2665 | mdcache->mds->queue_waiters(t); |
94b18763 FG |
2666 | waiting_for_commit.erase(it); |
2667 | it = _it; | |
7c673cae FG |
2668 | } |
2669 | ||
2670 | // try drop dentries in this dirfrag if it's about to be purged | |
31f18b77 FG |
2671 | if (!inode->is_base() && get_parent_dir()->inode->is_stray() && |
2672 | inode->snaprealm) | |
f67539c2 | 2673 | mdcache->maybe_eval_stray(inode, true); |
7c673cae FG |
2674 | |
2675 | // unpin if we kicked the last waiter. | |
2676 | if (were_waiters && | |
2677 | waiting_for_commit.empty()) | |
2678 | auth_unpin(this); | |
2679 | } | |
2680 | ||
2681 | ||
2682 | ||
2683 | ||
2684 | // IMPORT/EXPORT | |
2685 | ||
f67539c2 TL |
2686 | mds_rank_t CDir::get_export_pin(bool inherit) const |
2687 | { | |
2688 | mds_rank_t export_pin = inode->get_export_pin(inherit); | |
2689 | if (export_pin == MDS_RANK_EPHEMERAL_DIST) | |
2690 | export_pin = mdcache->hash_into_rank_bucket(ino(), get_frag()); | |
2691 | else if (export_pin == MDS_RANK_EPHEMERAL_RAND) | |
2692 | export_pin = mdcache->hash_into_rank_bucket(ino()); | |
2693 | return export_pin; | |
2694 | } | |
2695 | ||
2696 | bool CDir::is_exportable(mds_rank_t dest) const | |
2697 | { | |
2698 | mds_rank_t export_pin = get_export_pin(); | |
2699 | if (export_pin == dest) | |
2700 | return true; | |
2701 | if (export_pin >= 0) | |
2702 | return false; | |
2703 | return true; | |
2704 | } | |
2705 | ||
7c673cae FG |
2706 | void CDir::encode_export(bufferlist& bl) |
2707 | { | |
9f95a23c | 2708 | ENCODE_START(1, 1, bl); |
11fdf7f2 TL |
2709 | ceph_assert(!is_projected()); |
2710 | encode(first, bl); | |
f67539c2 | 2711 | encode(*fnode, bl); |
11fdf7f2 TL |
2712 | encode(dirty_old_rstat, bl); |
2713 | encode(committed_version, bl); | |
7c673cae | 2714 | |
11fdf7f2 TL |
2715 | encode(state, bl); |
2716 | encode(dir_rep, bl); | |
7c673cae | 2717 | |
11fdf7f2 TL |
2718 | encode(pop_me, bl); |
2719 | encode(pop_auth_subtree, bl); | |
7c673cae | 2720 | |
11fdf7f2 TL |
2721 | encode(dir_rep_by, bl); |
2722 | encode(get_replicas(), bl); | |
7c673cae FG |
2723 | |
2724 | get(PIN_TEMPEXPORTING); | |
9f95a23c | 2725 | ENCODE_FINISH(bl); |
7c673cae FG |
2726 | } |
2727 | ||
11fdf7f2 | 2728 | void CDir::finish_export() |
7c673cae FG |
2729 | { |
2730 | state &= MASK_STATE_EXPORT_KEPT; | |
11fdf7f2 TL |
2731 | pop_nested.sub(pop_auth_subtree); |
2732 | pop_auth_subtree_nested.sub(pop_auth_subtree); | |
2733 | pop_me.zero(); | |
2734 | pop_auth_subtree.zero(); | |
7c673cae FG |
2735 | put(PIN_TEMPEXPORTING); |
2736 | dirty_old_rstat.clear(); | |
2737 | } | |
2738 | ||
11fdf7f2 | 2739 | void CDir::decode_import(bufferlist::const_iterator& blp, LogSegment *ls) |
7c673cae | 2740 | { |
9f95a23c | 2741 | DECODE_START(1, blp); |
11fdf7f2 | 2742 | decode(first, blp); |
f67539c2 TL |
2743 | { |
2744 | auto _fnode = allocate_fnode(); | |
2745 | decode(*_fnode, blp); | |
2746 | reset_fnode(std::move(_fnode)); | |
2747 | } | |
2748 | update_projected_version(); | |
2749 | ||
11fdf7f2 | 2750 | decode(dirty_old_rstat, blp); |
11fdf7f2 | 2751 | decode(committed_version, blp); |
7c673cae FG |
2752 | committing_version = committed_version; |
2753 | ||
2754 | unsigned s; | |
11fdf7f2 | 2755 | decode(s, blp); |
7c673cae FG |
2756 | state &= MASK_STATE_IMPORT_KEPT; |
2757 | state_set(STATE_AUTH | (s & MASK_STATE_EXPORTED)); | |
2758 | ||
2759 | if (is_dirty()) { | |
2760 | get(PIN_DIRTY); | |
2761 | _mark_dirty(ls); | |
2762 | } | |
2763 | ||
11fdf7f2 | 2764 | decode(dir_rep, blp); |
7c673cae | 2765 | |
11fdf7f2 TL |
2766 | decode(pop_me, blp); |
2767 | decode(pop_auth_subtree, blp); | |
2768 | pop_nested.add(pop_auth_subtree); | |
2769 | pop_auth_subtree_nested.add(pop_auth_subtree); | |
7c673cae | 2770 | |
11fdf7f2 TL |
2771 | decode(dir_rep_by, blp); |
2772 | decode(get_replicas(), blp); | |
181888fb | 2773 | if (is_replicated()) get(PIN_REPLICATED); |
7c673cae FG |
2774 | |
2775 | replica_nonce = 0; // no longer defined | |
2776 | ||
2777 | // did we import some dirty scatterlock data? | |
2778 | if (dirty_old_rstat.size() || | |
f67539c2 TL |
2779 | !(fnode->rstat == fnode->accounted_rstat)) { |
2780 | mdcache->mds->locker->mark_updated_scatterlock(&inode->nestlock); | |
7c673cae FG |
2781 | ls->dirty_dirfrag_nest.push_back(&inode->item_dirty_dirfrag_nest); |
2782 | } | |
f67539c2 TL |
2783 | if (!(fnode->fragstat == fnode->accounted_fragstat)) { |
2784 | mdcache->mds->locker->mark_updated_scatterlock(&inode->filelock); | |
7c673cae FG |
2785 | ls->dirty_dirfrag_dir.push_back(&inode->item_dirty_dirfrag_dir); |
2786 | } | |
2787 | if (is_dirty_dft()) { | |
2788 | if (inode->dirfragtreelock.get_state() != LOCK_MIX && | |
2789 | inode->dirfragtreelock.is_stable()) { | |
2790 | // clear stale dirtydft | |
2791 | state_clear(STATE_DIRTYDFT); | |
2792 | } else { | |
f67539c2 | 2793 | mdcache->mds->locker->mark_updated_scatterlock(&inode->dirfragtreelock); |
7c673cae FG |
2794 | ls->dirty_dirfrag_dirfragtree.push_back(&inode->item_dirty_dirfrag_dirfragtree); |
2795 | } | |
2796 | } | |
9f95a23c | 2797 | DECODE_FINISH(blp); |
7c673cae FG |
2798 | } |
2799 | ||
11fdf7f2 TL |
2800 | void CDir::abort_import() |
2801 | { | |
2802 | ceph_assert(is_auth()); | |
2803 | state_clear(CDir::STATE_AUTH); | |
2804 | remove_bloom(); | |
2805 | clear_replica_map(); | |
2806 | set_replica_nonce(CDir::EXPORT_NONCE); | |
2807 | if (is_dirty()) | |
2808 | mark_clean(); | |
7c673cae | 2809 | |
11fdf7f2 TL |
2810 | pop_nested.sub(pop_auth_subtree); |
2811 | pop_auth_subtree_nested.sub(pop_auth_subtree); | |
2812 | pop_me.zero(); | |
2813 | pop_auth_subtree.zero(); | |
2814 | } | |
7c673cae | 2815 | |
11fdf7f2 TL |
2816 | void CDir::encode_dirstat(bufferlist& bl, const session_info_t& info, const DirStat& ds) { |
2817 | if (info.has_feature(CEPHFS_FEATURE_REPLY_ENCODING)) { | |
2818 | ENCODE_START(1, 1, bl); | |
2819 | encode(ds.frag, bl); | |
2820 | encode(ds.auth, bl); | |
2821 | encode(ds.dist, bl); | |
2822 | ENCODE_FINISH(bl); | |
2823 | } | |
2824 | else { | |
2825 | encode(ds.frag, bl); | |
2826 | encode(ds.auth, bl); | |
2827 | encode(ds.dist, bl); | |
2828 | } | |
2829 | } | |
7c673cae FG |
2830 | |
2831 | /******************************** | |
2832 | * AUTHORITY | |
2833 | */ | |
2834 | ||
2835 | /* | |
2836 | * if dir_auth.first == parent, auth is same as inode. | |
2837 | * unless .second != unknown, in which case that sticks. | |
2838 | */ | |
2839 | mds_authority_t CDir::authority() const | |
2840 | { | |
2841 | if (is_subtree_root()) | |
2842 | return dir_auth; | |
2843 | else | |
2844 | return inode->authority(); | |
2845 | } | |
2846 | ||
2847 | /** is_subtree_root() | |
2848 | * true if this is an auth delegation point. | |
2849 | * that is, dir_auth != default (parent,unknown) | |
2850 | * | |
2851 | * some key observations: | |
2852 | * if i am auth: | |
2853 | * - any region bound will be an export, or frozen. | |
2854 | * | |
2855 | * note that this DOES heed dir_auth.pending | |
2856 | */ | |
2857 | /* | |
2858 | bool CDir::is_subtree_root() | |
2859 | { | |
2860 | if (dir_auth == CDIR_AUTH_DEFAULT) { | |
2861 | //dout(10) << "is_subtree_root false " << dir_auth << " != " << CDIR_AUTH_DEFAULT | |
2862 | //<< " on " << ino() << dendl; | |
2863 | return false; | |
2864 | } else { | |
2865 | //dout(10) << "is_subtree_root true " << dir_auth << " != " << CDIR_AUTH_DEFAULT | |
2866 | //<< " on " << ino() << dendl; | |
2867 | return true; | |
2868 | } | |
2869 | } | |
2870 | */ | |
2871 | ||
2872 | /** contains(x) | |
2873 | * true if we are x, or an ancestor of x | |
2874 | */ | |
2875 | bool CDir::contains(CDir *x) | |
2876 | { | |
2877 | while (1) { | |
2878 | if (x == this) | |
2879 | return true; | |
2880 | x = x->get_inode()->get_projected_parent_dir(); | |
2881 | if (x == 0) | |
2882 | return false; | |
2883 | } | |
2884 | } | |
2885 | ||
f67539c2 TL |
2886 | bool CDir::can_rep() const |
2887 | { | |
2888 | if (!is_rep()) | |
2889 | return true; | |
2890 | ||
2891 | unsigned mds_num = mdcache->mds->get_mds_map()->get_num_mds(MDSMap::STATE_ACTIVE); | |
2892 | if ((mds_num - 1) > get_replicas().size()) | |
2893 | return true; | |
2894 | ||
2895 | return false; | |
2896 | } | |
7c673cae FG |
2897 | |
2898 | ||
2899 | /** set_dir_auth | |
2900 | */ | |
11fdf7f2 | 2901 | void CDir::set_dir_auth(const mds_authority_t &a) |
7c673cae FG |
2902 | { |
2903 | dout(10) << "setting dir_auth=" << a | |
2904 | << " from " << dir_auth | |
2905 | << " on " << *this << dendl; | |
2906 | ||
2907 | bool was_subtree = is_subtree_root(); | |
2908 | bool was_ambiguous = dir_auth.second >= 0; | |
2909 | ||
2910 | // set it. | |
2911 | dir_auth = a; | |
2912 | ||
2913 | // new subtree root? | |
2914 | if (!was_subtree && is_subtree_root()) { | |
2915 | dout(10) << " new subtree root, adjusting auth_pins" << dendl; | |
1adf2230 | 2916 | |
11fdf7f2 TL |
2917 | if (freeze_tree_state) { |
2918 | // only by CDir::_freeze_tree() | |
2919 | ceph_assert(is_freezing_tree_root()); | |
2920 | } | |
1adf2230 | 2921 | |
11fdf7f2 | 2922 | inode->num_subtree_roots++; |
7c673cae FG |
2923 | |
2924 | // unpin parent of frozen dir/tree? | |
224ce89b | 2925 | if (inode->is_auth()) { |
11fdf7f2 | 2926 | ceph_assert(!is_frozen_tree_root()); |
224ce89b WB |
2927 | if (is_frozen_dir()) |
2928 | inode->auth_unpin(this); | |
2929 | } | |
7c673cae FG |
2930 | } |
2931 | if (was_subtree && !is_subtree_root()) { | |
2932 | dout(10) << " old subtree root, adjusting auth_pins" << dendl; | |
1adf2230 AA |
2933 | |
2934 | inode->num_subtree_roots--; | |
7c673cae FG |
2935 | |
2936 | // pin parent of frozen dir/tree? | |
224ce89b | 2937 | if (inode->is_auth()) { |
11fdf7f2 | 2938 | ceph_assert(!is_frozen_tree_root()); |
224ce89b WB |
2939 | if (is_frozen_dir()) |
2940 | inode->auth_pin(this); | |
2941 | } | |
7c673cae FG |
2942 | } |
2943 | ||
2944 | // newly single auth? | |
2945 | if (was_ambiguous && dir_auth.second == CDIR_AUTH_UNKNOWN) { | |
11fdf7f2 | 2946 | MDSContext::vec ls; |
7c673cae | 2947 | take_waiting(WAIT_SINGLEAUTH, ls); |
f67539c2 | 2948 | mdcache->mds->queue_waiters(ls); |
7c673cae FG |
2949 | } |
2950 | } | |
2951 | ||
7c673cae FG |
2952 | /***************************************** |
2953 | * AUTH PINS and FREEZING | |
2954 | * | |
2955 | * the basic plan is that auth_pins only exist in auth regions, and they | |
2956 | * prevent a freeze (and subsequent auth change). | |
2957 | * | |
2958 | * however, we also need to prevent a parent from freezing if a child is frozen. | |
2959 | * for that reason, the parent inode of a frozen directory is auth_pinned. | |
2960 | * | |
2961 | * the oddity is when the frozen directory is a subtree root. if that's the case, | |
2962 | * the parent inode isn't frozen. which means that when subtree authority is adjusted | |
2963 | * at the bounds, inodes for any frozen bound directories need to get auth_pins at that | |
2964 | * time. | |
2965 | * | |
2966 | */ | |
2967 | ||
2968 | void CDir::auth_pin(void *by) | |
2969 | { | |
2970 | if (auth_pins == 0) | |
2971 | get(PIN_AUTHPIN); | |
2972 | auth_pins++; | |
2973 | ||
2974 | #ifdef MDS_AUTHPIN_SET | |
2975 | auth_pin_set.insert(by); | |
2976 | #endif | |
2977 | ||
11fdf7f2 | 2978 | dout(10) << "auth_pin by " << by << " on " << *this << " count now " << auth_pins << dendl; |
7c673cae | 2979 | |
11fdf7f2 TL |
2980 | if (freeze_tree_state) |
2981 | freeze_tree_state->auth_pins += 1; | |
7c673cae FG |
2982 | } |
2983 | ||
2984 | void CDir::auth_unpin(void *by) | |
2985 | { | |
2986 | auth_pins--; | |
2987 | ||
2988 | #ifdef MDS_AUTHPIN_SET | |
11fdf7f2 TL |
2989 | { |
2990 | auto it = auth_pin_set.find(by); | |
2991 | ceph_assert(it != auth_pin_set.end()); | |
2992 | auth_pin_set.erase(it); | |
2993 | } | |
7c673cae FG |
2994 | #endif |
2995 | if (auth_pins == 0) | |
2996 | put(PIN_AUTHPIN); | |
2997 | ||
11fdf7f2 TL |
2998 | dout(10) << "auth_unpin by " << by << " on " << *this << " count now " << auth_pins << dendl; |
2999 | ceph_assert(auth_pins >= 0); | |
3000 | ||
3001 | if (freeze_tree_state) | |
3002 | freeze_tree_state->auth_pins -= 1; | |
7c673cae FG |
3003 | |
3004 | maybe_finish_freeze(); // pending freeze? | |
7c673cae FG |
3005 | } |
3006 | ||
11fdf7f2 | 3007 | void CDir::adjust_nested_auth_pins(int dirinc, void *by) |
7c673cae | 3008 | { |
11fdf7f2 | 3009 | ceph_assert(dirinc); |
7c673cae FG |
3010 | dir_auth_pins += dirinc; |
3011 | ||
11fdf7f2 | 3012 | dout(15) << __func__ << " " << dirinc << " on " << *this |
7c673cae | 3013 | << " by " << by << " count now " |
11fdf7f2 TL |
3014 | << auth_pins << "/" << dir_auth_pins << dendl; |
3015 | ceph_assert(dir_auth_pins >= 0); | |
7c673cae | 3016 | |
11fdf7f2 TL |
3017 | if (freeze_tree_state) |
3018 | freeze_tree_state->auth_pins += dirinc; | |
7c673cae | 3019 | |
11fdf7f2 TL |
3020 | if (dirinc < 0) |
3021 | maybe_finish_freeze(); // pending freeze? | |
7c673cae FG |
3022 | } |
3023 | ||
3024 | #ifdef MDS_VERIFY_FRAGSTAT | |
3025 | void CDir::verify_fragstat() | |
3026 | { | |
11fdf7f2 | 3027 | ceph_assert(is_complete()); |
7c673cae FG |
3028 | if (inode->is_stray()) |
3029 | return; | |
3030 | ||
3031 | frag_info_t c; | |
3032 | memset(&c, 0, sizeof(c)); | |
3033 | ||
94b18763 | 3034 | for (auto it = items.begin(); |
7c673cae FG |
3035 | it != items.end(); |
3036 | ++it) { | |
3037 | CDentry *dn = it->second; | |
3038 | if (dn->is_null()) | |
3039 | continue; | |
3040 | ||
3041 | dout(10) << " " << *dn << dendl; | |
3042 | if (dn->is_primary()) | |
3043 | dout(10) << " " << *dn->inode << dendl; | |
3044 | ||
3045 | if (dn->is_primary()) { | |
3046 | if (dn->inode->is_dir()) | |
3047 | c.nsubdirs++; | |
3048 | else | |
3049 | c.nfiles++; | |
3050 | } | |
3051 | if (dn->is_remote()) { | |
3052 | if (dn->get_remote_d_type() == DT_DIR) | |
3053 | c.nsubdirs++; | |
3054 | else | |
3055 | c.nfiles++; | |
3056 | } | |
3057 | } | |
3058 | ||
f67539c2 TL |
3059 | if (c.nsubdirs != fnode->fragstat.nsubdirs || |
3060 | c.nfiles != fnode->fragstat.nfiles) { | |
3061 | dout(0) << "verify_fragstat failed " << fnode->fragstat << " on " << *this << dendl; | |
7c673cae FG |
3062 | dout(0) << " i count " << c << dendl; |
3063 | ceph_abort(); | |
3064 | } else { | |
f67539c2 | 3065 | dout(0) << "verify_fragstat ok " << fnode->fragstat << " on " << *this << dendl; |
7c673cae FG |
3066 | } |
3067 | } | |
3068 | #endif | |
3069 | ||
3070 | /***************************************************************************** | |
3071 | * FREEZING | |
3072 | */ | |
3073 | ||
3074 | // FREEZE TREE | |
3075 | ||
11fdf7f2 TL |
3076 | void CDir::_walk_tree(std::function<bool(CDir*)> callback) |
3077 | { | |
11fdf7f2 TL |
3078 | deque<CDir*> dfq; |
3079 | dfq.push_back(this); | |
3080 | ||
11fdf7f2 TL |
3081 | while (!dfq.empty()) { |
3082 | CDir *dir = dfq.front(); | |
3083 | dfq.pop_front(); | |
3084 | ||
3085 | for (auto& p : *dir) { | |
3086 | CDentry *dn = p.second; | |
3087 | if (!dn->get_linkage()->is_primary()) | |
3088 | continue; | |
3089 | CInode *in = dn->get_linkage()->get_inode(); | |
3090 | if (!in->is_dir()) | |
3091 | continue; | |
3092 | ||
9f95a23c | 3093 | auto&& dfv = in->get_nested_dirfrags(); |
11fdf7f2 TL |
3094 | for (auto& dir : dfv) { |
3095 | auto ret = callback(dir); | |
3096 | if (ret) | |
3097 | dfq.push_back(dir); | |
3098 | } | |
11fdf7f2 TL |
3099 | } |
3100 | } | |
3101 | } | |
3102 | ||
7c673cae FG |
3103 | bool CDir::freeze_tree() |
3104 | { | |
11fdf7f2 TL |
3105 | ceph_assert(!is_frozen()); |
3106 | ceph_assert(!is_freezing()); | |
3107 | ceph_assert(!freeze_tree_state); | |
7c673cae FG |
3108 | |
3109 | auth_pin(this); | |
11fdf7f2 TL |
3110 | |
3111 | // Travese the subtree to mark dirfrags as 'freezing' (set freeze_tree_state) | |
3112 | // and to accumulate auth pins and record total count in freeze_tree_state. | |
3113 | // when auth unpin an 'freezing' object, the counter in freeze_tree_state also | |
3114 | // gets decreased. Subtree become 'frozen' when the counter reaches zero. | |
3115 | freeze_tree_state = std::make_shared<freeze_tree_state_t>(this); | |
3116 | freeze_tree_state->auth_pins += get_auth_pins() + get_dir_auth_pins(); | |
9f95a23c | 3117 | if (!lock_caches_with_auth_pins.empty()) |
f67539c2 | 3118 | mdcache->mds->locker->invalidate_lock_caches(this); |
11fdf7f2 TL |
3119 | |
3120 | _walk_tree([this](CDir *dir) { | |
3121 | if (dir->freeze_tree_state) | |
3122 | return false; | |
3123 | dir->freeze_tree_state = freeze_tree_state; | |
3124 | freeze_tree_state->auth_pins += dir->get_auth_pins() + dir->get_dir_auth_pins(); | |
9f95a23c | 3125 | if (!dir->lock_caches_with_auth_pins.empty()) |
f67539c2 | 3126 | mdcache->mds->locker->invalidate_lock_caches(dir); |
11fdf7f2 | 3127 | return true; |
9f95a23c | 3128 | } |
11fdf7f2 TL |
3129 | ); |
3130 | ||
7c673cae FG |
3131 | if (is_freezeable(true)) { |
3132 | _freeze_tree(); | |
3133 | auth_unpin(this); | |
3134 | return true; | |
3135 | } else { | |
3136 | state_set(STATE_FREEZINGTREE); | |
3137 | ++num_freezing_trees; | |
3138 | dout(10) << "freeze_tree waiting " << *this << dendl; | |
3139 | return false; | |
3140 | } | |
3141 | } | |
3142 | ||
3143 | void CDir::_freeze_tree() | |
3144 | { | |
11fdf7f2 TL |
3145 | dout(10) << __func__ << " " << *this << dendl; |
3146 | ceph_assert(is_freezeable(true)); | |
7c673cae | 3147 | |
11fdf7f2 TL |
3148 | if (freeze_tree_state) { |
3149 | ceph_assert(is_auth()); | |
3150 | } else { | |
3151 | ceph_assert(!is_auth()); | |
3152 | freeze_tree_state = std::make_shared<freeze_tree_state_t>(this); | |
7c673cae | 3153 | } |
11fdf7f2 | 3154 | freeze_tree_state->frozen = true; |
224ce89b WB |
3155 | |
3156 | if (is_auth()) { | |
3157 | mds_authority_t auth; | |
3158 | bool was_subtree = is_subtree_root(); | |
3159 | if (was_subtree) { | |
3160 | auth = get_dir_auth(); | |
3161 | } else { | |
3162 | // temporarily prevent parent subtree from becoming frozen. | |
3163 | inode->auth_pin(this); | |
3164 | // create new subtree | |
3165 | auth = authority(); | |
3166 | } | |
3167 | ||
11fdf7f2 TL |
3168 | _walk_tree([this, &auth] (CDir *dir) { |
3169 | if (dir->freeze_tree_state != freeze_tree_state) { | |
f67539c2 | 3170 | mdcache->adjust_subtree_auth(dir, auth); |
11fdf7f2 TL |
3171 | return false; |
3172 | } | |
3173 | return true; | |
3174 | } | |
3175 | ); | |
3176 | ||
3177 | ceph_assert(auth.first >= 0); | |
3178 | ceph_assert(auth.second == CDIR_AUTH_UNKNOWN); | |
224ce89b | 3179 | auth.second = auth.first; |
f67539c2 | 3180 | mdcache->adjust_subtree_auth(this, auth); |
224ce89b WB |
3181 | if (!was_subtree) |
3182 | inode->auth_unpin(this); | |
11fdf7f2 TL |
3183 | } else { |
3184 | // importing subtree ? | |
3185 | _walk_tree([this] (CDir *dir) { | |
3186 | ceph_assert(!dir->freeze_tree_state); | |
3187 | dir->freeze_tree_state = freeze_tree_state; | |
3188 | return true; | |
3189 | } | |
3190 | ); | |
3191 | } | |
3192 | ||
3193 | // twiddle state | |
3194 | if (state_test(STATE_FREEZINGTREE)) { | |
3195 | state_clear(STATE_FREEZINGTREE); | |
3196 | --num_freezing_trees; | |
224ce89b WB |
3197 | } |
3198 | ||
7c673cae FG |
3199 | state_set(STATE_FROZENTREE); |
3200 | ++num_frozen_trees; | |
3201 | get(PIN_FROZEN); | |
7c673cae FG |
3202 | } |
3203 | ||
3204 | void CDir::unfreeze_tree() | |
3205 | { | |
11fdf7f2 TL |
3206 | dout(10) << __func__ << " " << *this << dendl; |
3207 | ||
3208 | MDSContext::vec unfreeze_waiters; | |
3209 | take_waiting(WAIT_UNFREEZE, unfreeze_waiters); | |
3210 | ||
3211 | if (freeze_tree_state) { | |
3212 | _walk_tree([this, &unfreeze_waiters](CDir *dir) { | |
3213 | if (dir->freeze_tree_state != freeze_tree_state) | |
3214 | return false; | |
3215 | dir->freeze_tree_state.reset(); | |
3216 | dir->take_waiting(WAIT_UNFREEZE, unfreeze_waiters); | |
3217 | return true; | |
3218 | } | |
3219 | ); | |
3220 | } | |
7c673cae FG |
3221 | |
3222 | if (state_test(STATE_FROZENTREE)) { | |
3223 | // frozen. unfreeze. | |
3224 | state_clear(STATE_FROZENTREE); | |
3225 | --num_frozen_trees; | |
3226 | ||
3227 | put(PIN_FROZEN); | |
3228 | ||
224ce89b WB |
3229 | if (is_auth()) { |
3230 | // must be subtree | |
11fdf7f2 | 3231 | ceph_assert(is_subtree_root()); |
224ce89b WB |
3232 | // for debug purpose, caller should ensure 'dir_auth.second == dir_auth.first' |
3233 | mds_authority_t auth = get_dir_auth(); | |
11fdf7f2 TL |
3234 | ceph_assert(auth.first >= 0); |
3235 | ceph_assert(auth.second == auth.first); | |
224ce89b | 3236 | auth.second = CDIR_AUTH_UNKNOWN; |
f67539c2 | 3237 | mdcache->adjust_subtree_auth(this, auth); |
224ce89b | 3238 | } |
11fdf7f2 | 3239 | freeze_tree_state.reset(); |
7c673cae | 3240 | } else { |
11fdf7f2 | 3241 | ceph_assert(state_test(STATE_FREEZINGTREE)); |
7c673cae FG |
3242 | |
3243 | // freezing. stop it. | |
7c673cae FG |
3244 | state_clear(STATE_FREEZINGTREE); |
3245 | --num_freezing_trees; | |
11fdf7f2 TL |
3246 | freeze_tree_state.reset(); |
3247 | ||
3248 | finish_waiting(WAIT_FROZEN, -1); | |
7c673cae | 3249 | auth_unpin(this); |
7c673cae | 3250 | } |
11fdf7f2 | 3251 | |
f67539c2 | 3252 | mdcache->mds->queue_waiters(unfreeze_waiters); |
11fdf7f2 TL |
3253 | } |
3254 | ||
3255 | void CDir::adjust_freeze_after_rename(CDir *dir) | |
3256 | { | |
3257 | if (!freeze_tree_state || dir->freeze_tree_state != freeze_tree_state) | |
3258 | return; | |
3259 | CDir *newdir = dir->get_inode()->get_parent_dir(); | |
3260 | if (newdir == this || newdir->freeze_tree_state == freeze_tree_state) | |
3261 | return; | |
3262 | ||
3263 | ceph_assert(!freeze_tree_state->frozen); | |
3264 | ceph_assert(get_dir_auth_pins() > 0); | |
3265 | ||
3266 | MDSContext::vec unfreeze_waiters; | |
3267 | ||
3268 | auto unfreeze = [this, &unfreeze_waiters](CDir *dir) { | |
3269 | if (dir->freeze_tree_state != freeze_tree_state) | |
3270 | return false; | |
3271 | int dec = dir->get_auth_pins() + dir->get_dir_auth_pins(); | |
3272 | // shouldn't become zero because srcdn of rename was auth pinned | |
3273 | ceph_assert(freeze_tree_state->auth_pins > dec); | |
3274 | freeze_tree_state->auth_pins -= dec; | |
3275 | dir->freeze_tree_state.reset(); | |
3276 | dir->take_waiting(WAIT_UNFREEZE, unfreeze_waiters); | |
3277 | return true; | |
3278 | }; | |
3279 | ||
3280 | unfreeze(dir); | |
3281 | dir->_walk_tree(unfreeze); | |
3282 | ||
f67539c2 | 3283 | mdcache->mds->queue_waiters(unfreeze_waiters); |
7c673cae FG |
3284 | } |
3285 | ||
91327a77 | 3286 | bool CDir::can_auth_pin(int *err_ret) const |
7c673cae | 3287 | { |
91327a77 AA |
3288 | int err; |
3289 | if (!is_auth()) { | |
3290 | err = ERR_NOT_AUTH; | |
3291 | } else if (is_freezing_dir() || is_frozen_dir()) { | |
3292 | err = ERR_FRAGMENTING_DIR; | |
3293 | } else { | |
3294 | auto p = is_freezing_or_frozen_tree(); | |
3295 | if (p.first || p.second) { | |
3296 | err = ERR_EXPORTING_TREE; | |
3297 | } else { | |
3298 | err = 0; | |
3299 | } | |
3300 | } | |
3301 | if (err && err_ret) | |
3302 | *err_ret = err; | |
3303 | return !err; | |
3304 | } | |
3305 | ||
7c673cae FG |
3306 | class C_Dir_AuthUnpin : public CDirContext { |
3307 | public: | |
3308 | explicit C_Dir_AuthUnpin(CDir *d) : CDirContext(d) {} | |
3309 | void finish(int r) override { | |
3310 | dir->auth_unpin(dir->get_inode()); | |
3311 | } | |
3312 | }; | |
3313 | ||
3314 | void CDir::maybe_finish_freeze() | |
3315 | { | |
11fdf7f2 | 3316 | if (dir_auth_pins != 0) |
7c673cae FG |
3317 | return; |
3318 | ||
3319 | // we can freeze the _dir_ even with nested pins... | |
3320 | if (state_test(STATE_FREEZINGDIR)) { | |
11fdf7f2 TL |
3321 | if (auth_pins == 1) { |
3322 | _freeze_dir(); | |
3323 | auth_unpin(this); | |
3324 | finish_waiting(WAIT_FROZEN); | |
3325 | } | |
7c673cae FG |
3326 | } |
3327 | ||
11fdf7f2 TL |
3328 | if (freeze_tree_state) { |
3329 | if (freeze_tree_state->frozen || | |
3330 | freeze_tree_state->auth_pins != 1) | |
3331 | return; | |
3332 | ||
3333 | if (freeze_tree_state->dir != this) { | |
3334 | freeze_tree_state->dir->maybe_finish_freeze(); | |
3335 | return; | |
3336 | } | |
3337 | ||
3338 | ceph_assert(state_test(STATE_FREEZINGTREE)); | |
7c673cae | 3339 | |
7c673cae | 3340 | if (!is_subtree_root() && inode->is_frozen()) { |
11fdf7f2 | 3341 | dout(10) << __func__ << " !subtree root and frozen inode, waiting for unfreeze on " << inode << dendl; |
7c673cae FG |
3342 | // retake an auth_pin... |
3343 | auth_pin(inode); | |
3344 | // and release it when the parent inode unfreezes | |
3345 | inode->add_waiter(WAIT_UNFREEZE, new C_Dir_AuthUnpin(this)); | |
3346 | return; | |
3347 | } | |
3348 | ||
3349 | _freeze_tree(); | |
3350 | auth_unpin(this); | |
3351 | finish_waiting(WAIT_FROZEN); | |
3352 | } | |
3353 | } | |
3354 | ||
3355 | ||
3356 | ||
3357 | // FREEZE DIR | |
3358 | ||
3359 | bool CDir::freeze_dir() | |
3360 | { | |
11fdf7f2 TL |
3361 | ceph_assert(!is_frozen()); |
3362 | ceph_assert(!is_freezing()); | |
7c673cae FG |
3363 | |
3364 | auth_pin(this); | |
3365 | if (is_freezeable_dir(true)) { | |
3366 | _freeze_dir(); | |
3367 | auth_unpin(this); | |
3368 | return true; | |
3369 | } else { | |
3370 | state_set(STATE_FREEZINGDIR); | |
9f95a23c | 3371 | if (!lock_caches_with_auth_pins.empty()) |
f67539c2 | 3372 | mdcache->mds->locker->invalidate_lock_caches(this); |
7c673cae FG |
3373 | dout(10) << "freeze_dir + wait " << *this << dendl; |
3374 | return false; | |
3375 | } | |
3376 | } | |
3377 | ||
3378 | void CDir::_freeze_dir() | |
3379 | { | |
11fdf7f2 | 3380 | dout(10) << __func__ << " " << *this << dendl; |
7c673cae FG |
3381 | //assert(is_freezeable_dir(true)); |
3382 | // not always true during split because the original fragment may have frozen a while | |
3383 | // ago and we're just now getting around to breaking it up. | |
3384 | ||
3385 | state_clear(STATE_FREEZINGDIR); | |
3386 | state_set(STATE_FROZENDIR); | |
3387 | get(PIN_FROZEN); | |
3388 | ||
3389 | if (is_auth() && !is_subtree_root()) | |
3390 | inode->auth_pin(this); // auth_pin for duration of freeze | |
3391 | } | |
3392 | ||
3393 | ||
3394 | void CDir::unfreeze_dir() | |
3395 | { | |
11fdf7f2 | 3396 | dout(10) << __func__ << " " << *this << dendl; |
7c673cae FG |
3397 | |
3398 | if (state_test(STATE_FROZENDIR)) { | |
3399 | state_clear(STATE_FROZENDIR); | |
3400 | put(PIN_FROZEN); | |
3401 | ||
3402 | // unpin (may => FREEZEABLE) FIXME: is this order good? | |
3403 | if (is_auth() && !is_subtree_root()) | |
3404 | inode->auth_unpin(this); | |
3405 | ||
3406 | finish_waiting(WAIT_UNFREEZE); | |
3407 | } else { | |
3408 | finish_waiting(WAIT_FROZEN, -1); | |
3409 | ||
3410 | // still freezing. stop. | |
11fdf7f2 | 3411 | ceph_assert(state_test(STATE_FREEZINGDIR)); |
7c673cae FG |
3412 | state_clear(STATE_FREEZINGDIR); |
3413 | auth_unpin(this); | |
3414 | ||
3415 | finish_waiting(WAIT_UNFREEZE); | |
3416 | } | |
3417 | } | |
3418 | ||
9f95a23c TL |
3419 | void CDir::enable_frozen_inode() |
3420 | { | |
3421 | ceph_assert(frozen_inode_suppressed > 0); | |
3422 | if (--frozen_inode_suppressed == 0) { | |
3423 | for (auto p = freezing_inodes.begin(); !p.end(); ) { | |
3424 | CInode *in = *p; | |
3425 | ++p; | |
3426 | ceph_assert(in->is_freezing_inode()); | |
3427 | in->maybe_finish_freeze_inode(); | |
3428 | } | |
3429 | } | |
3430 | } | |
3431 | ||
7c673cae FG |
3432 | /** |
3433 | * Slightly less complete than operator<<, because this is intended | |
3434 | * for identifying a directory and its state rather than for dumping | |
3435 | * debug output. | |
3436 | */ | |
11fdf7f2 | 3437 | void CDir::dump(Formatter *f, int flags) const |
7c673cae | 3438 | { |
11fdf7f2 TL |
3439 | ceph_assert(f != NULL); |
3440 | if (flags & DUMP_PATH) { | |
3441 | f->dump_stream("path") << get_path(); | |
3442 | } | |
3443 | if (flags & DUMP_DIRFRAG) { | |
3444 | f->dump_stream("dirfrag") << dirfrag(); | |
3445 | } | |
3446 | if (flags & DUMP_SNAPID_FIRST) { | |
3447 | f->dump_int("snapid_first", first); | |
3448 | } | |
3449 | if (flags & DUMP_VERSIONS) { | |
3450 | f->dump_stream("projected_version") << get_projected_version(); | |
3451 | f->dump_stream("version") << get_version(); | |
3452 | f->dump_stream("committing_version") << get_committing_version(); | |
3453 | f->dump_stream("committed_version") << get_committed_version(); | |
3454 | } | |
3455 | if (flags & DUMP_REP) { | |
3456 | f->dump_bool("is_rep", is_rep()); | |
3457 | } | |
3458 | if (flags & DUMP_DIR_AUTH) { | |
3459 | if (get_dir_auth() != CDIR_AUTH_DEFAULT) { | |
3460 | if (get_dir_auth().second == CDIR_AUTH_UNKNOWN) { | |
3461 | f->dump_stream("dir_auth") << get_dir_auth().first; | |
3462 | } else { | |
3463 | f->dump_stream("dir_auth") << get_dir_auth(); | |
3464 | } | |
7c673cae | 3465 | } else { |
11fdf7f2 | 3466 | f->dump_string("dir_auth", ""); |
7c673cae | 3467 | } |
11fdf7f2 TL |
3468 | } |
3469 | if (flags & DUMP_STATES) { | |
3470 | f->open_array_section("states"); | |
3471 | MDSCacheObject::dump_states(f); | |
3472 | if (state_test(CDir::STATE_COMPLETE)) f->dump_string("state", "complete"); | |
3473 | if (state_test(CDir::STATE_FREEZINGTREE)) f->dump_string("state", "freezingtree"); | |
3474 | if (state_test(CDir::STATE_FROZENTREE)) f->dump_string("state", "frozentree"); | |
3475 | if (state_test(CDir::STATE_FROZENDIR)) f->dump_string("state", "frozendir"); | |
3476 | if (state_test(CDir::STATE_FREEZINGDIR)) f->dump_string("state", "freezingdir"); | |
3477 | if (state_test(CDir::STATE_EXPORTBOUND)) f->dump_string("state", "exportbound"); | |
3478 | if (state_test(CDir::STATE_IMPORTBOUND)) f->dump_string("state", "importbound"); | |
3479 | if (state_test(CDir::STATE_BADFRAG)) f->dump_string("state", "badfrag"); | |
3480 | f->close_section(); | |
3481 | } | |
3482 | if (flags & DUMP_MDS_CACHE_OBJECT) { | |
3483 | MDSCacheObject::dump(f); | |
3484 | } | |
3485 | if (flags & DUMP_ITEMS) { | |
3486 | f->open_array_section("dentries"); | |
3487 | for (auto &p : items) { | |
3488 | CDentry *dn = p.second; | |
3489 | f->open_object_section("dentry"); | |
3490 | dn->dump(f); | |
3491 | f->close_section(); | |
3492 | } | |
3493 | f->close_section(); | |
3494 | } | |
7c673cae FG |
3495 | } |
3496 | ||
11fdf7f2 | 3497 | void CDir::dump_load(Formatter *f) |
28e407b8 AA |
3498 | { |
3499 | f->dump_stream("path") << get_path(); | |
3500 | f->dump_stream("dirfrag") << dirfrag(); | |
3501 | ||
3502 | f->open_object_section("pop_me"); | |
11fdf7f2 | 3503 | pop_me.dump(f); |
28e407b8 AA |
3504 | f->close_section(); |
3505 | ||
3506 | f->open_object_section("pop_nested"); | |
11fdf7f2 | 3507 | pop_nested.dump(f); |
28e407b8 AA |
3508 | f->close_section(); |
3509 | ||
3510 | f->open_object_section("pop_auth_subtree"); | |
11fdf7f2 | 3511 | pop_auth_subtree.dump(f); |
28e407b8 AA |
3512 | f->close_section(); |
3513 | ||
3514 | f->open_object_section("pop_auth_subtree_nested"); | |
11fdf7f2 | 3515 | pop_auth_subtree_nested.dump(f); |
28e407b8 AA |
3516 | f->close_section(); |
3517 | } | |
3518 | ||
7c673cae FG |
3519 | /****** Scrub Stuff *******/ |
3520 | ||
3521 | void CDir::scrub_info_create() const | |
3522 | { | |
11fdf7f2 | 3523 | ceph_assert(!scrub_infop); |
7c673cae FG |
3524 | |
3525 | // break out of const-land to set up implicit initial state | |
3526 | CDir *me = const_cast<CDir*>(this); | |
f67539c2 | 3527 | const auto& pf = me->get_projected_fnode(); |
7c673cae FG |
3528 | |
3529 | std::unique_ptr<scrub_info_t> si(new scrub_info_t()); | |
3530 | ||
f67539c2 TL |
3531 | si->last_recursive.version = pf->recursive_scrub_version; |
3532 | si->last_recursive.time = pf->recursive_scrub_stamp; | |
7c673cae | 3533 | |
f67539c2 TL |
3534 | si->last_local.version = pf->localized_scrub_version; |
3535 | si->last_local.time = pf->localized_scrub_stamp; | |
7c673cae FG |
3536 | |
3537 | me->scrub_infop.swap(si); | |
3538 | } | |
3539 | ||
f67539c2 | 3540 | void CDir::scrub_initialize(const ScrubHeaderRef& header) |
7c673cae | 3541 | { |
f67539c2 | 3542 | ceph_assert(header); |
7c673cae FG |
3543 | // FIXME: weird implicit construction, is someone else meant |
3544 | // to be calling scrub_info_create first? | |
3545 | scrub_info(); | |
7c673cae FG |
3546 | scrub_infop->directory_scrubbing = true; |
3547 | scrub_infop->header = header; | |
f67539c2 | 3548 | header->inc_num_pending(); |
7c673cae FG |
3549 | } |
3550 | ||
f67539c2 | 3551 | void CDir::scrub_aborted() { |
7c673cae | 3552 | dout(20) << __func__ << dendl; |
f67539c2 | 3553 | ceph_assert(scrub_is_in_progress()); |
7c673cae | 3554 | |
f67539c2 TL |
3555 | scrub_infop->last_scrub_dirty = false; |
3556 | scrub_infop->directory_scrubbing = false; | |
3557 | scrub_infop->header->dec_num_pending(); | |
3558 | scrub_infop.reset(); | |
7c673cae FG |
3559 | } |
3560 | ||
f67539c2 | 3561 | void CDir::scrub_finished() |
7c673cae FG |
3562 | { |
3563 | dout(20) << __func__ << dendl; | |
f67539c2 | 3564 | ceph_assert(scrub_is_in_progress()); |
7c673cae | 3565 | |
f67539c2 TL |
3566 | scrub_infop->last_local.time = ceph_clock_now(); |
3567 | scrub_infop->last_local.version = get_version(); | |
3568 | if (scrub_infop->header->get_recursive()) | |
3569 | scrub_infop->last_recursive = scrub_infop->last_local; | |
7c673cae | 3570 | |
f67539c2 | 3571 | scrub_infop->last_scrub_dirty = true; |
7c673cae | 3572 | |
f67539c2 TL |
3573 | scrub_infop->directory_scrubbing = false; |
3574 | scrub_infop->header->dec_num_pending(); | |
7c673cae FG |
3575 | } |
3576 | ||
3577 | void CDir::scrub_maybe_delete_info() | |
3578 | { | |
3579 | if (scrub_infop && | |
3580 | !scrub_infop->directory_scrubbing && | |
f67539c2 | 3581 | !scrub_infop->last_scrub_dirty) |
7c673cae | 3582 | scrub_infop.reset(); |
7c673cae FG |
3583 | } |
3584 | ||
3585 | bool CDir::scrub_local() | |
3586 | { | |
11fdf7f2 | 3587 | ceph_assert(is_complete()); |
f67539c2 TL |
3588 | bool good = check_rstats(true); |
3589 | if (!good && scrub_infop->header->get_repair()) { | |
3590 | mdcache->repair_dirfrag_stats(this); | |
3591 | scrub_infop->header->set_repaired(); | |
7c673cae | 3592 | } |
f67539c2 | 3593 | return good; |
7c673cae FG |
3594 | } |
3595 | ||
3596 | std::string CDir::get_path() const | |
3597 | { | |
3598 | std::string path; | |
3599 | get_inode()->make_path_string(path, true); | |
3600 | return path; | |
3601 | } | |
3602 | ||
3603 | bool CDir::should_split_fast() const | |
3604 | { | |
3605 | // Max size a fragment can be before trigger fast splitting | |
11fdf7f2 | 3606 | int fast_limit = g_conf()->mds_bal_split_size * g_conf()->mds_bal_fragment_fast_factor; |
7c673cae FG |
3607 | |
3608 | // Fast path: the sum of accounted size and null dentries does not | |
3609 | // exceed threshold: we definitely are not over it. | |
3610 | if (get_frag_size() + get_num_head_null() <= fast_limit) { | |
3611 | return false; | |
3612 | } | |
3613 | ||
3614 | // Fast path: the accounted size of the frag exceeds threshold: we | |
3615 | // definitely are over it | |
3616 | if (get_frag_size() > fast_limit) { | |
3617 | return true; | |
3618 | } | |
3619 | ||
3620 | int64_t effective_size = 0; | |
3621 | ||
3622 | for (const auto &p : items) { | |
3623 | const CDentry *dn = p.second; | |
3624 | if (!dn->get_projected_linkage()->is_null()) { | |
3625 | effective_size++; | |
3626 | } | |
3627 | } | |
3628 | ||
3629 | return effective_size > fast_limit; | |
3630 | } | |
3631 | ||
f67539c2 TL |
3632 | bool CDir::should_merge() const |
3633 | { | |
3634 | if (get_frag() == frag_t()) | |
3635 | return false; | |
3636 | ||
3637 | if (inode->is_ephemeral_dist()) { | |
3638 | unsigned min_frag_bits = mdcache->get_ephemeral_dist_frag_bits(); | |
3639 | if (min_frag_bits > 0 && get_frag().bits() < min_frag_bits + 1) | |
3640 | return false; | |
3641 | } | |
3642 | ||
3643 | return (int)get_frag_size() < g_conf()->mds_bal_merge_size; | |
3644 | } | |
3645 | ||
181888fb | 3646 | MEMPOOL_DEFINE_OBJECT_FACTORY(CDir, co_dir, mds_co); |
f91f0fd5 | 3647 | MEMPOOL_DEFINE_OBJECT_FACTORY(CDir::scrub_info_t, scrub_info_t, mds_co) |