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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * journal.c | |
5 | * | |
6 | * Defines functions of journalling api | |
7 | * | |
8 | * Copyright (C) 2003, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/fs.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/highmem.h> | |
30 | #include <linux/kthread.h> | |
83273932 SE |
31 | #include <linux/time.h> |
32 | #include <linux/random.h> | |
55b465b6 | 33 | #include <linux/delay.h> |
ccd979bd | 34 | |
ccd979bd MF |
35 | #include <cluster/masklog.h> |
36 | ||
37 | #include "ocfs2.h" | |
38 | ||
39 | #include "alloc.h" | |
50655ae9 | 40 | #include "blockcheck.h" |
316f4b9f | 41 | #include "dir.h" |
ccd979bd MF |
42 | #include "dlmglue.h" |
43 | #include "extent_map.h" | |
44 | #include "heartbeat.h" | |
45 | #include "inode.h" | |
46 | #include "journal.h" | |
47 | #include "localalloc.h" | |
ccd979bd MF |
48 | #include "slot_map.h" |
49 | #include "super.h" | |
ccd979bd | 50 | #include "sysfile.h" |
0cf2f763 | 51 | #include "uptodate.h" |
2205363d | 52 | #include "quota.h" |
ed460cff JQ |
53 | #include "file.h" |
54 | #include "namei.h" | |
ccd979bd MF |
55 | |
56 | #include "buffer_head_io.h" | |
b4107950 | 57 | #include "ocfs2_trace.h" |
ccd979bd | 58 | |
34af946a | 59 | DEFINE_SPINLOCK(trans_inc_lock); |
ccd979bd | 60 | |
83273932 SE |
61 | #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 |
62 | ||
ccd979bd MF |
63 | static int ocfs2_force_read_journal(struct inode *inode); |
64 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 65 | int node_num, int slot_num); |
ccd979bd MF |
66 | static int __ocfs2_recovery_thread(void *arg); |
67 | static int ocfs2_commit_cache(struct ocfs2_super *osb); | |
19ece546 | 68 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); |
ccd979bd | 69 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 70 | int dirty, int replayed); |
ccd979bd MF |
71 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
72 | int slot_num); | |
73 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
ed460cff JQ |
74 | int slot, |
75 | enum ocfs2_orphan_reco_type orphan_reco_type); | |
ccd979bd | 76 | static int ocfs2_commit_thread(void *arg); |
9140db04 SE |
77 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
78 | int slot_num, | |
79 | struct ocfs2_dinode *la_dinode, | |
80 | struct ocfs2_dinode *tl_dinode, | |
ed460cff JQ |
81 | struct ocfs2_quota_recovery *qrec, |
82 | enum ocfs2_orphan_reco_type orphan_reco_type); | |
ccd979bd | 83 | |
19ece546 JK |
84 | static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) |
85 | { | |
86 | return __ocfs2_wait_on_mount(osb, 0); | |
87 | } | |
88 | ||
89 | static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) | |
90 | { | |
91 | return __ocfs2_wait_on_mount(osb, 1); | |
92 | } | |
93 | ||
9140db04 SE |
94 | /* |
95 | * This replay_map is to track online/offline slots, so we could recover | |
96 | * offline slots during recovery and mount | |
97 | */ | |
98 | ||
99 | enum ocfs2_replay_state { | |
100 | REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ | |
101 | REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ | |
102 | REPLAY_DONE /* Replay was already queued */ | |
103 | }; | |
104 | ||
105 | struct ocfs2_replay_map { | |
106 | unsigned int rm_slots; | |
107 | enum ocfs2_replay_state rm_state; | |
108 | unsigned char rm_replay_slots[0]; | |
109 | }; | |
110 | ||
b519ea6d | 111 | static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) |
9140db04 SE |
112 | { |
113 | if (!osb->replay_map) | |
114 | return; | |
115 | ||
116 | /* If we've already queued the replay, we don't have any more to do */ | |
117 | if (osb->replay_map->rm_state == REPLAY_DONE) | |
118 | return; | |
119 | ||
120 | osb->replay_map->rm_state = state; | |
121 | } | |
122 | ||
123 | int ocfs2_compute_replay_slots(struct ocfs2_super *osb) | |
124 | { | |
125 | struct ocfs2_replay_map *replay_map; | |
126 | int i, node_num; | |
127 | ||
128 | /* If replay map is already set, we don't do it again */ | |
129 | if (osb->replay_map) | |
130 | return 0; | |
131 | ||
132 | replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + | |
133 | (osb->max_slots * sizeof(char)), GFP_KERNEL); | |
134 | ||
135 | if (!replay_map) { | |
136 | mlog_errno(-ENOMEM); | |
137 | return -ENOMEM; | |
138 | } | |
139 | ||
140 | spin_lock(&osb->osb_lock); | |
141 | ||
142 | replay_map->rm_slots = osb->max_slots; | |
143 | replay_map->rm_state = REPLAY_UNNEEDED; | |
144 | ||
145 | /* set rm_replay_slots for offline slot(s) */ | |
146 | for (i = 0; i < replay_map->rm_slots; i++) { | |
147 | if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT) | |
148 | replay_map->rm_replay_slots[i] = 1; | |
149 | } | |
150 | ||
151 | osb->replay_map = replay_map; | |
152 | spin_unlock(&osb->osb_lock); | |
153 | return 0; | |
154 | } | |
155 | ||
b519ea6d | 156 | static void ocfs2_queue_replay_slots(struct ocfs2_super *osb, |
ed460cff | 157 | enum ocfs2_orphan_reco_type orphan_reco_type) |
9140db04 SE |
158 | { |
159 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
160 | int i; | |
161 | ||
162 | if (!replay_map) | |
163 | return; | |
164 | ||
165 | if (replay_map->rm_state != REPLAY_NEEDED) | |
166 | return; | |
167 | ||
168 | for (i = 0; i < replay_map->rm_slots; i++) | |
169 | if (replay_map->rm_replay_slots[i]) | |
170 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, | |
ed460cff JQ |
171 | NULL, NULL, |
172 | orphan_reco_type); | |
9140db04 SE |
173 | replay_map->rm_state = REPLAY_DONE; |
174 | } | |
175 | ||
b519ea6d | 176 | static void ocfs2_free_replay_slots(struct ocfs2_super *osb) |
9140db04 SE |
177 | { |
178 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
179 | ||
180 | if (!osb->replay_map) | |
181 | return; | |
182 | ||
183 | kfree(replay_map); | |
184 | osb->replay_map = NULL; | |
185 | } | |
186 | ||
553abd04 JB |
187 | int ocfs2_recovery_init(struct ocfs2_super *osb) |
188 | { | |
189 | struct ocfs2_recovery_map *rm; | |
190 | ||
191 | mutex_init(&osb->recovery_lock); | |
192 | osb->disable_recovery = 0; | |
193 | osb->recovery_thread_task = NULL; | |
194 | init_waitqueue_head(&osb->recovery_event); | |
195 | ||
196 | rm = kzalloc(sizeof(struct ocfs2_recovery_map) + | |
197 | osb->max_slots * sizeof(unsigned int), | |
198 | GFP_KERNEL); | |
199 | if (!rm) { | |
200 | mlog_errno(-ENOMEM); | |
201 | return -ENOMEM; | |
202 | } | |
203 | ||
204 | rm->rm_entries = (unsigned int *)((char *)rm + | |
205 | sizeof(struct ocfs2_recovery_map)); | |
206 | osb->recovery_map = rm; | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
211 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
212 | * memory barriers to make sure that we'll see the null task before | |
213 | * being woken up */ | |
214 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
215 | { | |
216 | mb(); | |
217 | return osb->recovery_thread_task != NULL; | |
218 | } | |
219 | ||
220 | void ocfs2_recovery_exit(struct ocfs2_super *osb) | |
221 | { | |
222 | struct ocfs2_recovery_map *rm; | |
223 | ||
224 | /* disable any new recovery threads and wait for any currently | |
225 | * running ones to exit. Do this before setting the vol_state. */ | |
226 | mutex_lock(&osb->recovery_lock); | |
227 | osb->disable_recovery = 1; | |
228 | mutex_unlock(&osb->recovery_lock); | |
229 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); | |
230 | ||
231 | /* At this point, we know that no more recovery threads can be | |
232 | * launched, so wait for any recovery completion work to | |
233 | * complete. */ | |
35ddf78e | 234 | flush_workqueue(osb->ocfs2_wq); |
553abd04 JB |
235 | |
236 | /* | |
237 | * Now that recovery is shut down, and the osb is about to be | |
238 | * freed, the osb_lock is not taken here. | |
239 | */ | |
240 | rm = osb->recovery_map; | |
241 | /* XXX: Should we bug if there are dirty entries? */ | |
242 | ||
243 | kfree(rm); | |
244 | } | |
245 | ||
246 | static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, | |
247 | unsigned int node_num) | |
248 | { | |
249 | int i; | |
250 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
251 | ||
252 | assert_spin_locked(&osb->osb_lock); | |
253 | ||
254 | for (i = 0; i < rm->rm_used; i++) { | |
255 | if (rm->rm_entries[i] == node_num) | |
256 | return 1; | |
257 | } | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
262 | /* Behaves like test-and-set. Returns the previous value */ | |
263 | static int ocfs2_recovery_map_set(struct ocfs2_super *osb, | |
264 | unsigned int node_num) | |
265 | { | |
266 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
267 | ||
268 | spin_lock(&osb->osb_lock); | |
269 | if (__ocfs2_recovery_map_test(osb, node_num)) { | |
270 | spin_unlock(&osb->osb_lock); | |
271 | return 1; | |
272 | } | |
273 | ||
274 | /* XXX: Can this be exploited? Not from o2dlm... */ | |
275 | BUG_ON(rm->rm_used >= osb->max_slots); | |
276 | ||
277 | rm->rm_entries[rm->rm_used] = node_num; | |
278 | rm->rm_used++; | |
279 | spin_unlock(&osb->osb_lock); | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, | |
285 | unsigned int node_num) | |
286 | { | |
287 | int i; | |
288 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
289 | ||
290 | spin_lock(&osb->osb_lock); | |
291 | ||
292 | for (i = 0; i < rm->rm_used; i++) { | |
293 | if (rm->rm_entries[i] == node_num) | |
294 | break; | |
295 | } | |
296 | ||
297 | if (i < rm->rm_used) { | |
298 | /* XXX: be careful with the pointer math */ | |
299 | memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), | |
300 | (rm->rm_used - i - 1) * sizeof(unsigned int)); | |
301 | rm->rm_used--; | |
302 | } | |
303 | ||
304 | spin_unlock(&osb->osb_lock); | |
305 | } | |
306 | ||
ccd979bd MF |
307 | static int ocfs2_commit_cache(struct ocfs2_super *osb) |
308 | { | |
309 | int status = 0; | |
310 | unsigned int flushed; | |
ccd979bd MF |
311 | struct ocfs2_journal *journal = NULL; |
312 | ||
ccd979bd MF |
313 | journal = osb->journal; |
314 | ||
315 | /* Flush all pending commits and checkpoint the journal. */ | |
316 | down_write(&journal->j_trans_barrier); | |
317 | ||
b4107950 TM |
318 | flushed = atomic_read(&journal->j_num_trans); |
319 | trace_ocfs2_commit_cache_begin(flushed); | |
320 | if (flushed == 0) { | |
ccd979bd | 321 | up_write(&journal->j_trans_barrier); |
ccd979bd MF |
322 | goto finally; |
323 | } | |
324 | ||
2b4e30fb JB |
325 | jbd2_journal_lock_updates(journal->j_journal); |
326 | status = jbd2_journal_flush(journal->j_journal); | |
327 | jbd2_journal_unlock_updates(journal->j_journal); | |
ccd979bd MF |
328 | if (status < 0) { |
329 | up_write(&journal->j_trans_barrier); | |
330 | mlog_errno(status); | |
331 | goto finally; | |
332 | } | |
333 | ||
f9c57ada | 334 | ocfs2_inc_trans_id(journal); |
ccd979bd MF |
335 | |
336 | flushed = atomic_read(&journal->j_num_trans); | |
337 | atomic_set(&journal->j_num_trans, 0); | |
338 | up_write(&journal->j_trans_barrier); | |
339 | ||
b4107950 | 340 | trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed); |
ccd979bd | 341 | |
34d024f8 | 342 | ocfs2_wake_downconvert_thread(osb); |
ccd979bd MF |
343 | wake_up(&journal->j_checkpointed); |
344 | finally: | |
ccd979bd MF |
345 | return status; |
346 | } | |
347 | ||
1fabe148 | 348 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
ccd979bd | 349 | { |
ccd979bd | 350 | journal_t *journal = osb->journal->j_journal; |
1fabe148 | 351 | handle_t *handle; |
ccd979bd | 352 | |
ebdec83b | 353 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd | 354 | |
65eff9cc MF |
355 | if (ocfs2_is_hard_readonly(osb)) |
356 | return ERR_PTR(-EROFS); | |
ccd979bd MF |
357 | |
358 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
359 | BUG_ON(max_buffs <= 0); | |
360 | ||
90e86a63 JK |
361 | /* Nested transaction? Just return the handle... */ |
362 | if (journal_current_handle()) | |
363 | return jbd2_journal_start(journal, max_buffs); | |
ccd979bd | 364 | |
fef6925c JK |
365 | sb_start_intwrite(osb->sb); |
366 | ||
ccd979bd MF |
367 | down_read(&osb->journal->j_trans_barrier); |
368 | ||
2b4e30fb | 369 | handle = jbd2_journal_start(journal, max_buffs); |
1fabe148 | 370 | if (IS_ERR(handle)) { |
ccd979bd | 371 | up_read(&osb->journal->j_trans_barrier); |
fef6925c | 372 | sb_end_intwrite(osb->sb); |
ccd979bd | 373 | |
1fabe148 | 374 | mlog_errno(PTR_ERR(handle)); |
ccd979bd MF |
375 | |
376 | if (is_journal_aborted(journal)) { | |
7ecef14a | 377 | ocfs2_abort(osb->sb, "Detected aborted journal\n"); |
1fabe148 | 378 | handle = ERR_PTR(-EROFS); |
ccd979bd | 379 | } |
c271c5c2 SM |
380 | } else { |
381 | if (!ocfs2_mount_local(osb)) | |
382 | atomic_inc(&(osb->journal->j_num_trans)); | |
383 | } | |
ccd979bd | 384 | |
ccd979bd | 385 | return handle; |
ccd979bd MF |
386 | } |
387 | ||
1fabe148 MF |
388 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
389 | handle_t *handle) | |
ccd979bd | 390 | { |
90e86a63 | 391 | int ret, nested; |
02dc1af4 | 392 | struct ocfs2_journal *journal = osb->journal; |
ccd979bd MF |
393 | |
394 | BUG_ON(!handle); | |
395 | ||
90e86a63 | 396 | nested = handle->h_ref > 1; |
2b4e30fb | 397 | ret = jbd2_journal_stop(handle); |
1fabe148 MF |
398 | if (ret < 0) |
399 | mlog_errno(ret); | |
ccd979bd | 400 | |
fef6925c | 401 | if (!nested) { |
90e86a63 | 402 | up_read(&journal->j_trans_barrier); |
fef6925c JK |
403 | sb_end_intwrite(osb->sb); |
404 | } | |
ccd979bd | 405 | |
1fabe148 | 406 | return ret; |
ccd979bd MF |
407 | } |
408 | ||
409 | /* | |
c901fb00 | 410 | * 'nblocks' is what you want to add to the current transaction. |
ccd979bd | 411 | * |
2b4e30fb | 412 | * This might call jbd2_journal_restart() which will commit dirty buffers |
e8aed345 MF |
413 | * and then restart the transaction. Before calling |
414 | * ocfs2_extend_trans(), any changed blocks should have been | |
415 | * dirtied. After calling it, all blocks which need to be changed must | |
416 | * go through another set of journal_access/journal_dirty calls. | |
417 | * | |
ccd979bd MF |
418 | * WARNING: This will not release any semaphores or disk locks taken |
419 | * during the transaction, so make sure they were taken *before* | |
420 | * start_trans or we'll have ordering deadlocks. | |
421 | * | |
422 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
423 | * good because transaction ids haven't yet been recorded on the | |
424 | * cluster locks associated with this handle. | |
425 | */ | |
1fc58146 | 426 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
ccd979bd | 427 | { |
c901fb00 | 428 | int status, old_nblocks; |
ccd979bd MF |
429 | |
430 | BUG_ON(!handle); | |
c901fb00 | 431 | BUG_ON(nblocks < 0); |
ccd979bd | 432 | |
c901fb00 TM |
433 | if (!nblocks) |
434 | return 0; | |
435 | ||
436 | old_nblocks = handle->h_buffer_credits; | |
ccd979bd | 437 | |
b4107950 | 438 | trace_ocfs2_extend_trans(old_nblocks, nblocks); |
ccd979bd | 439 | |
e407e397 | 440 | #ifdef CONFIG_OCFS2_DEBUG_FS |
0879c584 MF |
441 | status = 1; |
442 | #else | |
2b4e30fb | 443 | status = jbd2_journal_extend(handle, nblocks); |
ccd979bd MF |
444 | if (status < 0) { |
445 | mlog_errno(status); | |
446 | goto bail; | |
447 | } | |
0879c584 | 448 | #endif |
ccd979bd MF |
449 | |
450 | if (status > 0) { | |
b4107950 | 451 | trace_ocfs2_extend_trans_restart(old_nblocks + nblocks); |
c901fb00 TM |
452 | status = jbd2_journal_restart(handle, |
453 | old_nblocks + nblocks); | |
ccd979bd | 454 | if (status < 0) { |
ccd979bd MF |
455 | mlog_errno(status); |
456 | goto bail; | |
457 | } | |
01ddf1e1 | 458 | } |
ccd979bd MF |
459 | |
460 | status = 0; | |
461 | bail: | |
ccd979bd MF |
462 | return status; |
463 | } | |
464 | ||
2b1e55c3 YL |
465 | /* |
466 | * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA. | |
467 | * If that fails, restart the transaction & regain write access for the | |
468 | * buffer head which is used for metadata modifications. | |
469 | * Taken from Ext4: extend_or_restart_transaction() | |
470 | */ | |
471 | int ocfs2_allocate_extend_trans(handle_t *handle, int thresh) | |
472 | { | |
473 | int status, old_nblks; | |
474 | ||
475 | BUG_ON(!handle); | |
476 | ||
477 | old_nblks = handle->h_buffer_credits; | |
478 | trace_ocfs2_allocate_extend_trans(old_nblks, thresh); | |
479 | ||
480 | if (old_nblks < thresh) | |
481 | return 0; | |
482 | ||
483 | status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA); | |
484 | if (status < 0) { | |
485 | mlog_errno(status); | |
486 | goto bail; | |
487 | } | |
488 | ||
489 | if (status > 0) { | |
490 | status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA); | |
491 | if (status < 0) | |
492 | mlog_errno(status); | |
493 | } | |
494 | ||
495 | bail: | |
496 | return status; | |
497 | } | |
498 | ||
499 | ||
50655ae9 JB |
500 | struct ocfs2_triggers { |
501 | struct jbd2_buffer_trigger_type ot_triggers; | |
502 | int ot_offset; | |
503 | }; | |
504 | ||
505 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) | |
506 | { | |
507 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); | |
508 | } | |
509 | ||
13ceef09 | 510 | static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
511 | struct buffer_head *bh, |
512 | void *data, size_t size) | |
513 | { | |
514 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); | |
515 | ||
516 | /* | |
517 | * We aren't guaranteed to have the superblock here, so we | |
518 | * must unconditionally compute the ecc data. | |
519 | * __ocfs2_journal_access() will only set the triggers if | |
520 | * metaecc is enabled. | |
521 | */ | |
522 | ocfs2_block_check_compute(data, size, data + ot->ot_offset); | |
523 | } | |
524 | ||
525 | /* | |
526 | * Quota blocks have their own trigger because the struct ocfs2_block_check | |
527 | * offset depends on the blocksize. | |
528 | */ | |
13ceef09 | 529 | static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
530 | struct buffer_head *bh, |
531 | void *data, size_t size) | |
532 | { | |
533 | struct ocfs2_disk_dqtrailer *dqt = | |
534 | ocfs2_block_dqtrailer(size, data); | |
535 | ||
536 | /* | |
537 | * We aren't guaranteed to have the superblock here, so we | |
538 | * must unconditionally compute the ecc data. | |
539 | * __ocfs2_journal_access() will only set the triggers if | |
540 | * metaecc is enabled. | |
541 | */ | |
542 | ocfs2_block_check_compute(data, size, &dqt->dq_check); | |
543 | } | |
544 | ||
c175a518 JB |
545 | /* |
546 | * Directory blocks also have their own trigger because the | |
547 | * struct ocfs2_block_check offset depends on the blocksize. | |
548 | */ | |
13ceef09 | 549 | static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
c175a518 JB |
550 | struct buffer_head *bh, |
551 | void *data, size_t size) | |
552 | { | |
553 | struct ocfs2_dir_block_trailer *trailer = | |
554 | ocfs2_dir_trailer_from_size(size, data); | |
555 | ||
556 | /* | |
557 | * We aren't guaranteed to have the superblock here, so we | |
558 | * must unconditionally compute the ecc data. | |
559 | * __ocfs2_journal_access() will only set the triggers if | |
560 | * metaecc is enabled. | |
561 | */ | |
562 | ocfs2_block_check_compute(data, size, &trailer->db_check); | |
563 | } | |
564 | ||
50655ae9 JB |
565 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
566 | struct buffer_head *bh) | |
567 | { | |
568 | mlog(ML_ERROR, | |
569 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " | |
570 | "bh->b_blocknr = %llu\n", | |
571 | (unsigned long)bh, | |
572 | (unsigned long long)bh->b_blocknr); | |
573 | ||
74e364ad | 574 | ocfs2_error(bh->b_bdev->bd_super, |
50655ae9 JB |
575 | "JBD2 has aborted our journal, ocfs2 cannot continue\n"); |
576 | } | |
577 | ||
578 | static struct ocfs2_triggers di_triggers = { | |
579 | .ot_triggers = { | |
13ceef09 | 580 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
581 | .t_abort = ocfs2_abort_trigger, |
582 | }, | |
583 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), | |
584 | }; | |
585 | ||
586 | static struct ocfs2_triggers eb_triggers = { | |
587 | .ot_triggers = { | |
13ceef09 | 588 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
589 | .t_abort = ocfs2_abort_trigger, |
590 | }, | |
591 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), | |
592 | }; | |
593 | ||
93c97087 TM |
594 | static struct ocfs2_triggers rb_triggers = { |
595 | .ot_triggers = { | |
13ceef09 | 596 | .t_frozen = ocfs2_frozen_trigger, |
93c97087 TM |
597 | .t_abort = ocfs2_abort_trigger, |
598 | }, | |
599 | .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), | |
600 | }; | |
601 | ||
50655ae9 JB |
602 | static struct ocfs2_triggers gd_triggers = { |
603 | .ot_triggers = { | |
13ceef09 | 604 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
605 | .t_abort = ocfs2_abort_trigger, |
606 | }, | |
607 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), | |
608 | }; | |
609 | ||
c175a518 JB |
610 | static struct ocfs2_triggers db_triggers = { |
611 | .ot_triggers = { | |
13ceef09 | 612 | .t_frozen = ocfs2_db_frozen_trigger, |
c175a518 JB |
613 | .t_abort = ocfs2_abort_trigger, |
614 | }, | |
615 | }; | |
616 | ||
50655ae9 JB |
617 | static struct ocfs2_triggers xb_triggers = { |
618 | .ot_triggers = { | |
13ceef09 | 619 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
620 | .t_abort = ocfs2_abort_trigger, |
621 | }, | |
622 | .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), | |
623 | }; | |
624 | ||
625 | static struct ocfs2_triggers dq_triggers = { | |
626 | .ot_triggers = { | |
13ceef09 | 627 | .t_frozen = ocfs2_dq_frozen_trigger, |
50655ae9 JB |
628 | .t_abort = ocfs2_abort_trigger, |
629 | }, | |
630 | }; | |
631 | ||
9b7895ef MF |
632 | static struct ocfs2_triggers dr_triggers = { |
633 | .ot_triggers = { | |
13ceef09 | 634 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
635 | .t_abort = ocfs2_abort_trigger, |
636 | }, | |
637 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), | |
638 | }; | |
639 | ||
640 | static struct ocfs2_triggers dl_triggers = { | |
641 | .ot_triggers = { | |
13ceef09 | 642 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
643 | .t_abort = ocfs2_abort_trigger, |
644 | }, | |
645 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), | |
646 | }; | |
647 | ||
50655ae9 | 648 | static int __ocfs2_journal_access(handle_t *handle, |
0cf2f763 | 649 | struct ocfs2_caching_info *ci, |
50655ae9 JB |
650 | struct buffer_head *bh, |
651 | struct ocfs2_triggers *triggers, | |
652 | int type) | |
ccd979bd MF |
653 | { |
654 | int status; | |
0cf2f763 JB |
655 | struct ocfs2_super *osb = |
656 | OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); | |
ccd979bd | 657 | |
0cf2f763 | 658 | BUG_ON(!ci || !ci->ci_ops); |
ccd979bd MF |
659 | BUG_ON(!handle); |
660 | BUG_ON(!bh); | |
ccd979bd | 661 | |
b4107950 TM |
662 | trace_ocfs2_journal_access( |
663 | (unsigned long long)ocfs2_metadata_cache_owner(ci), | |
664 | (unsigned long long)bh->b_blocknr, type, bh->b_size); | |
ccd979bd MF |
665 | |
666 | /* we can safely remove this assertion after testing. */ | |
667 | if (!buffer_uptodate(bh)) { | |
668 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
669 | mlog(ML_ERROR, "b_blocknr=%llu\n", | |
670 | (unsigned long long)bh->b_blocknr); | |
acf8fdbe JQ |
671 | |
672 | lock_buffer(bh); | |
673 | /* | |
674 | * A previous attempt to write this buffer head failed. | |
675 | * Nothing we can do but to retry the write and hope for | |
676 | * the best. | |
677 | */ | |
678 | if (buffer_write_io_error(bh) && !buffer_uptodate(bh)) { | |
679 | clear_buffer_write_io_error(bh); | |
680 | set_buffer_uptodate(bh); | |
681 | } | |
682 | ||
683 | if (!buffer_uptodate(bh)) { | |
684 | unlock_buffer(bh); | |
685 | return -EIO; | |
686 | } | |
687 | unlock_buffer(bh); | |
ccd979bd MF |
688 | } |
689 | ||
0cf2f763 | 690 | /* Set the current transaction information on the ci so |
ccd979bd | 691 | * that the locking code knows whether it can drop it's locks |
0cf2f763 | 692 | * on this ci or not. We're protected from the commit |
ccd979bd MF |
693 | * thread updating the current transaction id until |
694 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
695 | * j_trans_barrier for us. */ | |
0cf2f763 | 696 | ocfs2_set_ci_lock_trans(osb->journal, ci); |
ccd979bd | 697 | |
0cf2f763 | 698 | ocfs2_metadata_cache_io_lock(ci); |
ccd979bd MF |
699 | switch (type) { |
700 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
701 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
2b4e30fb | 702 | status = jbd2_journal_get_write_access(handle, bh); |
ccd979bd MF |
703 | break; |
704 | ||
705 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
2b4e30fb | 706 | status = jbd2_journal_get_undo_access(handle, bh); |
ccd979bd MF |
707 | break; |
708 | ||
709 | default: | |
710 | status = -EINVAL; | |
af901ca1 | 711 | mlog(ML_ERROR, "Unknown access type!\n"); |
ccd979bd | 712 | } |
0cf2f763 | 713 | if (!status && ocfs2_meta_ecc(osb) && triggers) |
50655ae9 | 714 | jbd2_journal_set_triggers(bh, &triggers->ot_triggers); |
0cf2f763 | 715 | ocfs2_metadata_cache_io_unlock(ci); |
ccd979bd MF |
716 | |
717 | if (status < 0) | |
718 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
719 | status, type); | |
720 | ||
ccd979bd MF |
721 | return status; |
722 | } | |
723 | ||
0cf2f763 JB |
724 | int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, |
725 | struct buffer_head *bh, int type) | |
50655ae9 | 726 | { |
0cf2f763 | 727 | return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type); |
50655ae9 JB |
728 | } |
729 | ||
0cf2f763 | 730 | int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
731 | struct buffer_head *bh, int type) |
732 | { | |
0cf2f763 | 733 | return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type); |
50655ae9 JB |
734 | } |
735 | ||
93c97087 TM |
736 | int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, |
737 | struct buffer_head *bh, int type) | |
738 | { | |
739 | return __ocfs2_journal_access(handle, ci, bh, &rb_triggers, | |
740 | type); | |
741 | } | |
742 | ||
0cf2f763 | 743 | int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
744 | struct buffer_head *bh, int type) |
745 | { | |
0cf2f763 | 746 | return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type); |
50655ae9 JB |
747 | } |
748 | ||
0cf2f763 | 749 | int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
750 | struct buffer_head *bh, int type) |
751 | { | |
0cf2f763 | 752 | return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type); |
50655ae9 JB |
753 | } |
754 | ||
0cf2f763 | 755 | int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
756 | struct buffer_head *bh, int type) |
757 | { | |
0cf2f763 | 758 | return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type); |
50655ae9 JB |
759 | } |
760 | ||
0cf2f763 | 761 | int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
762 | struct buffer_head *bh, int type) |
763 | { | |
0cf2f763 | 764 | return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type); |
50655ae9 JB |
765 | } |
766 | ||
0cf2f763 | 767 | int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
768 | struct buffer_head *bh, int type) |
769 | { | |
0cf2f763 | 770 | return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type); |
9b7895ef MF |
771 | } |
772 | ||
0cf2f763 | 773 | int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
774 | struct buffer_head *bh, int type) |
775 | { | |
0cf2f763 | 776 | return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type); |
9b7895ef MF |
777 | } |
778 | ||
0cf2f763 | 779 | int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
780 | struct buffer_head *bh, int type) |
781 | { | |
0cf2f763 | 782 | return __ocfs2_journal_access(handle, ci, bh, NULL, type); |
50655ae9 JB |
783 | } |
784 | ||
ec20cec7 | 785 | void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) |
ccd979bd MF |
786 | { |
787 | int status; | |
788 | ||
b4107950 | 789 | trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr); |
ccd979bd | 790 | |
2b4e30fb | 791 | status = jbd2_journal_dirty_metadata(handle, bh); |
e272e7f0 JQ |
792 | if (status) { |
793 | mlog_errno(status); | |
794 | if (!is_handle_aborted(handle)) { | |
795 | journal_t *journal = handle->h_transaction->t_journal; | |
796 | struct super_block *sb = bh->b_bdev->bd_super; | |
797 | ||
798 | mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. " | |
799 | "Aborting transaction and journal.\n"); | |
800 | handle->h_err = status; | |
801 | jbd2_journal_abort_handle(handle); | |
802 | jbd2_journal_abort(journal, status); | |
803 | ocfs2_abort(sb, "Journal already aborted.\n"); | |
804 | } | |
805 | } | |
ccd979bd MF |
806 | } |
807 | ||
2b4e30fb | 808 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
ccd979bd MF |
809 | |
810 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
811 | { | |
812 | journal_t *journal = osb->journal->j_journal; | |
d147b3d6 MF |
813 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
814 | ||
815 | if (osb->osb_commit_interval) | |
816 | commit_interval = osb->osb_commit_interval; | |
ccd979bd | 817 | |
a931da6a | 818 | write_lock(&journal->j_state_lock); |
d147b3d6 | 819 | journal->j_commit_interval = commit_interval; |
ccd979bd | 820 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
2b4e30fb | 821 | journal->j_flags |= JBD2_BARRIER; |
ccd979bd | 822 | else |
2b4e30fb | 823 | journal->j_flags &= ~JBD2_BARRIER; |
a931da6a | 824 | write_unlock(&journal->j_state_lock); |
ccd979bd MF |
825 | } |
826 | ||
827 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
828 | { | |
829 | int status = -1; | |
830 | struct inode *inode = NULL; /* the journal inode */ | |
831 | journal_t *j_journal = NULL; | |
832 | struct ocfs2_dinode *di = NULL; | |
833 | struct buffer_head *bh = NULL; | |
834 | struct ocfs2_super *osb; | |
e63aecb6 | 835 | int inode_lock = 0; |
ccd979bd | 836 | |
ccd979bd MF |
837 | BUG_ON(!journal); |
838 | ||
839 | osb = journal->j_osb; | |
840 | ||
841 | /* already have the inode for our journal */ | |
842 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
843 | osb->slot_num); | |
844 | if (inode == NULL) { | |
845 | status = -EACCES; | |
846 | mlog_errno(status); | |
847 | goto done; | |
848 | } | |
849 | if (is_bad_inode(inode)) { | |
850 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
851 | iput(inode); | |
852 | inode = NULL; | |
853 | status = -EACCES; | |
854 | goto done; | |
855 | } | |
856 | ||
857 | SET_INODE_JOURNAL(inode); | |
858 | OCFS2_I(inode)->ip_open_count++; | |
859 | ||
6eff5790 MF |
860 | /* Skip recovery waits here - journal inode metadata never |
861 | * changes in a live cluster so it can be considered an | |
862 | * exception to the rule. */ | |
e63aecb6 | 863 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd MF |
864 | if (status < 0) { |
865 | if (status != -ERESTARTSYS) | |
866 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
867 | goto done; | |
868 | } | |
869 | ||
e63aecb6 | 870 | inode_lock = 1; |
ccd979bd MF |
871 | di = (struct ocfs2_dinode *)bh->b_data; |
872 | ||
f17c20dd | 873 | if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) { |
ccd979bd | 874 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", |
f17c20dd | 875 | i_size_read(inode)); |
ccd979bd MF |
876 | status = -EINVAL; |
877 | goto done; | |
878 | } | |
879 | ||
f17c20dd | 880 | trace_ocfs2_journal_init(i_size_read(inode), |
b4107950 TM |
881 | (unsigned long long)inode->i_blocks, |
882 | OCFS2_I(inode)->ip_clusters); | |
ccd979bd MF |
883 | |
884 | /* call the kernels journal init function now */ | |
2b4e30fb | 885 | j_journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
886 | if (j_journal == NULL) { |
887 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
888 | status = -EINVAL; | |
889 | goto done; | |
890 | } | |
891 | ||
b4107950 | 892 | trace_ocfs2_journal_init_maxlen(j_journal->j_maxlen); |
ccd979bd MF |
893 | |
894 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
895 | OCFS2_JOURNAL_DIRTY_FL); | |
896 | ||
897 | journal->j_journal = j_journal; | |
898 | journal->j_inode = inode; | |
899 | journal->j_bh = bh; | |
900 | ||
901 | ocfs2_set_journal_params(osb); | |
902 | ||
903 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
904 | ||
905 | status = 0; | |
906 | done: | |
907 | if (status < 0) { | |
e63aecb6 MF |
908 | if (inode_lock) |
909 | ocfs2_inode_unlock(inode, 1); | |
a81cb88b | 910 | brelse(bh); |
ccd979bd MF |
911 | if (inode) { |
912 | OCFS2_I(inode)->ip_open_count--; | |
913 | iput(inode); | |
914 | } | |
915 | } | |
916 | ||
ccd979bd MF |
917 | return status; |
918 | } | |
919 | ||
539d8264 SM |
920 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
921 | { | |
922 | le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); | |
923 | } | |
924 | ||
925 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) | |
926 | { | |
927 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); | |
928 | } | |
929 | ||
ccd979bd | 930 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 931 | int dirty, int replayed) |
ccd979bd MF |
932 | { |
933 | int status; | |
934 | unsigned int flags; | |
935 | struct ocfs2_journal *journal = osb->journal; | |
936 | struct buffer_head *bh = journal->j_bh; | |
937 | struct ocfs2_dinode *fe; | |
938 | ||
ccd979bd | 939 | fe = (struct ocfs2_dinode *)bh->b_data; |
10995aa2 JB |
940 | |
941 | /* The journal bh on the osb always comes from ocfs2_journal_init() | |
942 | * and was validated there inside ocfs2_inode_lock_full(). It's a | |
943 | * code bug if we mess it up. */ | |
944 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
ccd979bd MF |
945 | |
946 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
947 | if (dirty) | |
948 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
949 | else | |
950 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
951 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
952 | ||
539d8264 SM |
953 | if (replayed) |
954 | ocfs2_bump_recovery_generation(fe); | |
955 | ||
13723d00 | 956 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 957 | status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); |
ccd979bd MF |
958 | if (status < 0) |
959 | mlog_errno(status); | |
960 | ||
ccd979bd MF |
961 | return status; |
962 | } | |
963 | ||
964 | /* | |
965 | * If the journal has been kmalloc'd it needs to be freed after this | |
966 | * call. | |
967 | */ | |
968 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
969 | { | |
970 | struct ocfs2_journal *journal = NULL; | |
971 | int status = 0; | |
972 | struct inode *inode = NULL; | |
973 | int num_running_trans = 0; | |
974 | ||
ebdec83b | 975 | BUG_ON(!osb); |
ccd979bd MF |
976 | |
977 | journal = osb->journal; | |
978 | if (!journal) | |
979 | goto done; | |
980 | ||
981 | inode = journal->j_inode; | |
982 | ||
983 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
984 | goto done; | |
985 | ||
2b4e30fb | 986 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
ccd979bd MF |
987 | if (!igrab(inode)) |
988 | BUG(); | |
989 | ||
990 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
b4107950 | 991 | trace_ocfs2_journal_shutdown(num_running_trans); |
ccd979bd MF |
992 | |
993 | /* Do a commit_cache here. It will flush our journal, *and* | |
994 | * release any locks that are still held. | |
995 | * set the SHUTDOWN flag and release the trans lock. | |
996 | * the commit thread will take the trans lock for us below. */ | |
997 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
998 | ||
999 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
1000 | * drop the trans_lock (which we want to hold until we | |
1001 | * completely destroy the journal. */ | |
1002 | if (osb->commit_task) { | |
1003 | /* Wait for the commit thread */ | |
b4107950 | 1004 | trace_ocfs2_journal_shutdown_wait(osb->commit_task); |
ccd979bd MF |
1005 | kthread_stop(osb->commit_task); |
1006 | osb->commit_task = NULL; | |
1007 | } | |
1008 | ||
1009 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
1010 | ||
c271c5c2 | 1011 | if (ocfs2_mount_local(osb)) { |
2b4e30fb JB |
1012 | jbd2_journal_lock_updates(journal->j_journal); |
1013 | status = jbd2_journal_flush(journal->j_journal); | |
1014 | jbd2_journal_unlock_updates(journal->j_journal); | |
c271c5c2 SM |
1015 | if (status < 0) |
1016 | mlog_errno(status); | |
1017 | } | |
1018 | ||
1019 | if (status == 0) { | |
1020 | /* | |
1021 | * Do not toggle if flush was unsuccessful otherwise | |
1022 | * will leave dirty metadata in a "clean" journal | |
1023 | */ | |
539d8264 | 1024 | status = ocfs2_journal_toggle_dirty(osb, 0, 0); |
c271c5c2 SM |
1025 | if (status < 0) |
1026 | mlog_errno(status); | |
1027 | } | |
ccd979bd MF |
1028 | |
1029 | /* Shutdown the kernel journal system */ | |
2b4e30fb | 1030 | jbd2_journal_destroy(journal->j_journal); |
ae0dff68 | 1031 | journal->j_journal = NULL; |
ccd979bd MF |
1032 | |
1033 | OCFS2_I(inode)->ip_open_count--; | |
1034 | ||
1035 | /* unlock our journal */ | |
e63aecb6 | 1036 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1037 | |
1038 | brelse(journal->j_bh); | |
1039 | journal->j_bh = NULL; | |
1040 | ||
1041 | journal->j_state = OCFS2_JOURNAL_FREE; | |
1042 | ||
1043 | // up_write(&journal->j_trans_barrier); | |
1044 | done: | |
72865d92 | 1045 | iput(inode); |
ccd979bd MF |
1046 | } |
1047 | ||
1048 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
1049 | journal_t *journal, | |
1050 | int slot) | |
1051 | { | |
1052 | int olderr; | |
1053 | ||
2b4e30fb | 1054 | olderr = jbd2_journal_errno(journal); |
ccd979bd MF |
1055 | if (olderr) { |
1056 | mlog(ML_ERROR, "File system error %d recorded in " | |
1057 | "journal %u.\n", olderr, slot); | |
1058 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
1059 | sb->s_id); | |
1060 | ||
2b4e30fb JB |
1061 | jbd2_journal_ack_err(journal); |
1062 | jbd2_journal_clear_err(journal); | |
ccd979bd MF |
1063 | } |
1064 | } | |
1065 | ||
539d8264 | 1066 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
ccd979bd MF |
1067 | { |
1068 | int status = 0; | |
1069 | struct ocfs2_super *osb; | |
1070 | ||
b1f3550f | 1071 | BUG_ON(!journal); |
ccd979bd MF |
1072 | |
1073 | osb = journal->j_osb; | |
1074 | ||
2b4e30fb | 1075 | status = jbd2_journal_load(journal->j_journal); |
ccd979bd MF |
1076 | if (status < 0) { |
1077 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
1078 | goto done; | |
1079 | } | |
1080 | ||
1081 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
1082 | ||
539d8264 | 1083 | status = ocfs2_journal_toggle_dirty(osb, 1, replayed); |
ccd979bd MF |
1084 | if (status < 0) { |
1085 | mlog_errno(status); | |
1086 | goto done; | |
1087 | } | |
1088 | ||
1089 | /* Launch the commit thread */ | |
c271c5c2 SM |
1090 | if (!local) { |
1091 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, | |
5afc44e2 | 1092 | "ocfs2cmt-%s", osb->uuid_str); |
c271c5c2 SM |
1093 | if (IS_ERR(osb->commit_task)) { |
1094 | status = PTR_ERR(osb->commit_task); | |
1095 | osb->commit_task = NULL; | |
1096 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " | |
1097 | "error=%d", status); | |
1098 | goto done; | |
1099 | } | |
1100 | } else | |
ccd979bd | 1101 | osb->commit_task = NULL; |
ccd979bd MF |
1102 | |
1103 | done: | |
ccd979bd MF |
1104 | return status; |
1105 | } | |
1106 | ||
1107 | ||
1108 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
1109 | * mark the journal clean */ | |
1110 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
1111 | { | |
1112 | int status; | |
1113 | ||
ebdec83b | 1114 | BUG_ON(!journal); |
ccd979bd | 1115 | |
2b4e30fb | 1116 | status = jbd2_journal_wipe(journal->j_journal, full); |
ccd979bd MF |
1117 | if (status < 0) { |
1118 | mlog_errno(status); | |
1119 | goto bail; | |
1120 | } | |
1121 | ||
539d8264 | 1122 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); |
ccd979bd MF |
1123 | if (status < 0) |
1124 | mlog_errno(status); | |
1125 | ||
1126 | bail: | |
ccd979bd MF |
1127 | return status; |
1128 | } | |
1129 | ||
553abd04 JB |
1130 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1131 | { | |
1132 | int empty; | |
1133 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
1134 | ||
1135 | spin_lock(&osb->osb_lock); | |
1136 | empty = (rm->rm_used == 0); | |
1137 | spin_unlock(&osb->osb_lock); | |
1138 | ||
1139 | return empty; | |
1140 | } | |
1141 | ||
1142 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) | |
1143 | { | |
1144 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); | |
1145 | } | |
1146 | ||
ccd979bd MF |
1147 | /* |
1148 | * JBD Might read a cached version of another nodes journal file. We | |
1149 | * don't want this as this file changes often and we get no | |
1150 | * notification on those changes. The only way to be sure that we've | |
1151 | * got the most up to date version of those blocks then is to force | |
1152 | * read them off disk. Just searching through the buffer cache won't | |
1153 | * work as there may be pages backing this file which are still marked | |
1154 | * up to date. We know things can't change on this file underneath us | |
1155 | * as we have the lock by now :) | |
1156 | */ | |
1157 | static int ocfs2_force_read_journal(struct inode *inode) | |
1158 | { | |
1159 | int status = 0; | |
4f902c37 | 1160 | int i; |
8110b073 | 1161 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
4f902c37 | 1162 | #define CONCURRENT_JOURNAL_FILL 32ULL |
ccd979bd MF |
1163 | struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; |
1164 | ||
ccd979bd MF |
1165 | memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); |
1166 | ||
f17c20dd | 1167 | num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode)); |
ccd979bd | 1168 | v_blkno = 0; |
8110b073 | 1169 | while (v_blkno < num_blocks) { |
ccd979bd | 1170 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
49cb8d2d | 1171 | &p_blkno, &p_blocks, NULL); |
ccd979bd MF |
1172 | if (status < 0) { |
1173 | mlog_errno(status); | |
1174 | goto bail; | |
1175 | } | |
1176 | ||
1177 | if (p_blocks > CONCURRENT_JOURNAL_FILL) | |
1178 | p_blocks = CONCURRENT_JOURNAL_FILL; | |
1179 | ||
dd4a2c2b MF |
1180 | /* We are reading journal data which should not |
1181 | * be put in the uptodate cache */ | |
da1e9098 JB |
1182 | status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), |
1183 | p_blkno, p_blocks, bhs); | |
ccd979bd MF |
1184 | if (status < 0) { |
1185 | mlog_errno(status); | |
1186 | goto bail; | |
1187 | } | |
1188 | ||
1189 | for(i = 0; i < p_blocks; i++) { | |
1190 | brelse(bhs[i]); | |
1191 | bhs[i] = NULL; | |
1192 | } | |
1193 | ||
1194 | v_blkno += p_blocks; | |
1195 | } | |
1196 | ||
1197 | bail: | |
1198 | for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) | |
a81cb88b | 1199 | brelse(bhs[i]); |
ccd979bd MF |
1200 | return status; |
1201 | } | |
1202 | ||
1203 | struct ocfs2_la_recovery_item { | |
1204 | struct list_head lri_list; | |
1205 | int lri_slot; | |
1206 | struct ocfs2_dinode *lri_la_dinode; | |
1207 | struct ocfs2_dinode *lri_tl_dinode; | |
2205363d | 1208 | struct ocfs2_quota_recovery *lri_qrec; |
ed460cff | 1209 | enum ocfs2_orphan_reco_type lri_orphan_reco_type; |
ccd979bd MF |
1210 | }; |
1211 | ||
1212 | /* Does the second half of the recovery process. By this point, the | |
1213 | * node is marked clean and can actually be considered recovered, | |
1214 | * hence it's no longer in the recovery map, but there's still some | |
1215 | * cleanup we can do which shouldn't happen within the recovery thread | |
1216 | * as locking in that context becomes very difficult if we are to take | |
1217 | * recovering nodes into account. | |
1218 | * | |
1219 | * NOTE: This function can and will sleep on recovery of other nodes | |
1220 | * during cluster locking, just like any other ocfs2 process. | |
1221 | */ | |
c4028958 | 1222 | void ocfs2_complete_recovery(struct work_struct *work) |
ccd979bd | 1223 | { |
b4107950 | 1224 | int ret = 0; |
c4028958 DH |
1225 | struct ocfs2_journal *journal = |
1226 | container_of(work, struct ocfs2_journal, j_recovery_work); | |
1227 | struct ocfs2_super *osb = journal->j_osb; | |
ccd979bd | 1228 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
800deef3 | 1229 | struct ocfs2_la_recovery_item *item, *n; |
2205363d | 1230 | struct ocfs2_quota_recovery *qrec; |
ed460cff | 1231 | enum ocfs2_orphan_reco_type orphan_reco_type; |
ccd979bd MF |
1232 | LIST_HEAD(tmp_la_list); |
1233 | ||
b4107950 TM |
1234 | trace_ocfs2_complete_recovery( |
1235 | (unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno); | |
ccd979bd MF |
1236 | |
1237 | spin_lock(&journal->j_lock); | |
1238 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
1239 | spin_unlock(&journal->j_lock); | |
1240 | ||
800deef3 | 1241 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
ccd979bd MF |
1242 | list_del_init(&item->lri_list); |
1243 | ||
19ece546 JK |
1244 | ocfs2_wait_on_quotas(osb); |
1245 | ||
ccd979bd | 1246 | la_dinode = item->lri_la_dinode; |
b4107950 TM |
1247 | tl_dinode = item->lri_tl_dinode; |
1248 | qrec = item->lri_qrec; | |
ed460cff | 1249 | orphan_reco_type = item->lri_orphan_reco_type; |
ccd979bd | 1250 | |
b4107950 TM |
1251 | trace_ocfs2_complete_recovery_slot(item->lri_slot, |
1252 | la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0, | |
1253 | tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0, | |
1254 | qrec); | |
1255 | ||
1256 | if (la_dinode) { | |
ccd979bd MF |
1257 | ret = ocfs2_complete_local_alloc_recovery(osb, |
1258 | la_dinode); | |
1259 | if (ret < 0) | |
1260 | mlog_errno(ret); | |
1261 | ||
1262 | kfree(la_dinode); | |
1263 | } | |
1264 | ||
ccd979bd | 1265 | if (tl_dinode) { |
ccd979bd MF |
1266 | ret = ocfs2_complete_truncate_log_recovery(osb, |
1267 | tl_dinode); | |
1268 | if (ret < 0) | |
1269 | mlog_errno(ret); | |
1270 | ||
1271 | kfree(tl_dinode); | |
1272 | } | |
1273 | ||
ed460cff JQ |
1274 | ret = ocfs2_recover_orphans(osb, item->lri_slot, |
1275 | orphan_reco_type); | |
ccd979bd MF |
1276 | if (ret < 0) |
1277 | mlog_errno(ret); | |
1278 | ||
2205363d | 1279 | if (qrec) { |
2205363d JK |
1280 | ret = ocfs2_finish_quota_recovery(osb, qrec, |
1281 | item->lri_slot); | |
1282 | if (ret < 0) | |
1283 | mlog_errno(ret); | |
1284 | /* Recovery info is already freed now */ | |
1285 | } | |
1286 | ||
ccd979bd MF |
1287 | kfree(item); |
1288 | } | |
1289 | ||
b4107950 | 1290 | trace_ocfs2_complete_recovery_end(ret); |
ccd979bd MF |
1291 | } |
1292 | ||
1293 | /* NOTE: This function always eats your references to la_dinode and | |
1294 | * tl_dinode, either manually on error, or by passing them to | |
1295 | * ocfs2_complete_recovery */ | |
1296 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
1297 | int slot_num, | |
1298 | struct ocfs2_dinode *la_dinode, | |
2205363d | 1299 | struct ocfs2_dinode *tl_dinode, |
ed460cff JQ |
1300 | struct ocfs2_quota_recovery *qrec, |
1301 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
ccd979bd MF |
1302 | { |
1303 | struct ocfs2_la_recovery_item *item; | |
1304 | ||
afae00ab | 1305 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
1306 | if (!item) { |
1307 | /* Though we wish to avoid it, we are in fact safe in | |
1308 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
1309 | * than capable of reclaiming unused space. */ | |
d787ab09 TG |
1310 | kfree(la_dinode); |
1311 | kfree(tl_dinode); | |
ccd979bd | 1312 | |
2205363d JK |
1313 | if (qrec) |
1314 | ocfs2_free_quota_recovery(qrec); | |
1315 | ||
ccd979bd MF |
1316 | mlog_errno(-ENOMEM); |
1317 | return; | |
1318 | } | |
1319 | ||
1320 | INIT_LIST_HEAD(&item->lri_list); | |
1321 | item->lri_la_dinode = la_dinode; | |
1322 | item->lri_slot = slot_num; | |
1323 | item->lri_tl_dinode = tl_dinode; | |
2205363d | 1324 | item->lri_qrec = qrec; |
ed460cff | 1325 | item->lri_orphan_reco_type = orphan_reco_type; |
ccd979bd MF |
1326 | |
1327 | spin_lock(&journal->j_lock); | |
1328 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
35ddf78e | 1329 | queue_work(journal->j_osb->ocfs2_wq, &journal->j_recovery_work); |
ccd979bd MF |
1330 | spin_unlock(&journal->j_lock); |
1331 | } | |
1332 | ||
1333 | /* Called by the mount code to queue recovery the last part of | |
9140db04 | 1334 | * recovery for it's own and offline slot(s). */ |
ccd979bd MF |
1335 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1336 | { | |
1337 | struct ocfs2_journal *journal = osb->journal; | |
1338 | ||
10b3dd76 SM |
1339 | if (ocfs2_is_hard_readonly(osb)) |
1340 | return; | |
1341 | ||
9140db04 SE |
1342 | /* No need to queue up our truncate_log as regular cleanup will catch |
1343 | * that */ | |
1344 | ocfs2_queue_recovery_completion(journal, osb->slot_num, | |
ed460cff JQ |
1345 | osb->local_alloc_copy, NULL, NULL, |
1346 | ORPHAN_NEED_TRUNCATE); | |
9140db04 | 1347 | ocfs2_schedule_truncate_log_flush(osb, 0); |
ccd979bd | 1348 | |
9140db04 SE |
1349 | osb->local_alloc_copy = NULL; |
1350 | osb->dirty = 0; | |
1351 | ||
1352 | /* queue to recover orphan slots for all offline slots */ | |
1353 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
ed460cff | 1354 | ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); |
9140db04 | 1355 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1356 | } |
1357 | ||
2205363d JK |
1358 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1359 | { | |
1360 | if (osb->quota_rec) { | |
1361 | ocfs2_queue_recovery_completion(osb->journal, | |
1362 | osb->slot_num, | |
1363 | NULL, | |
1364 | NULL, | |
ed460cff JQ |
1365 | osb->quota_rec, |
1366 | ORPHAN_NEED_TRUNCATE); | |
2205363d JK |
1367 | osb->quota_rec = NULL; |
1368 | } | |
1369 | } | |
1370 | ||
ccd979bd MF |
1371 | static int __ocfs2_recovery_thread(void *arg) |
1372 | { | |
2205363d | 1373 | int status, node_num, slot_num; |
ccd979bd | 1374 | struct ocfs2_super *osb = arg; |
553abd04 | 1375 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
2205363d JK |
1376 | int *rm_quota = NULL; |
1377 | int rm_quota_used = 0, i; | |
1378 | struct ocfs2_quota_recovery *qrec; | |
ccd979bd | 1379 | |
ccd979bd MF |
1380 | status = ocfs2_wait_on_mount(osb); |
1381 | if (status < 0) { | |
1382 | goto bail; | |
1383 | } | |
1384 | ||
2205363d JK |
1385 | rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS); |
1386 | if (!rm_quota) { | |
1387 | status = -ENOMEM; | |
1388 | goto bail; | |
1389 | } | |
ccd979bd MF |
1390 | restart: |
1391 | status = ocfs2_super_lock(osb, 1); | |
1392 | if (status < 0) { | |
1393 | mlog_errno(status); | |
1394 | goto bail; | |
1395 | } | |
1396 | ||
9140db04 SE |
1397 | status = ocfs2_compute_replay_slots(osb); |
1398 | if (status < 0) | |
1399 | mlog_errno(status); | |
1400 | ||
1401 | /* queue recovery for our own slot */ | |
1402 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
ed460cff | 1403 | NULL, NULL, ORPHAN_NO_NEED_TRUNCATE); |
9140db04 | 1404 | |
553abd04 JB |
1405 | spin_lock(&osb->osb_lock); |
1406 | while (rm->rm_used) { | |
1407 | /* It's always safe to remove entry zero, as we won't | |
1408 | * clear it until ocfs2_recover_node() has succeeded. */ | |
1409 | node_num = rm->rm_entries[0]; | |
1410 | spin_unlock(&osb->osb_lock); | |
2205363d | 1411 | slot_num = ocfs2_node_num_to_slot(osb, node_num); |
b4107950 | 1412 | trace_ocfs2_recovery_thread_node(node_num, slot_num); |
2205363d JK |
1413 | if (slot_num == -ENOENT) { |
1414 | status = 0; | |
2205363d JK |
1415 | goto skip_recovery; |
1416 | } | |
2205363d JK |
1417 | |
1418 | /* It is a bit subtle with quota recovery. We cannot do it | |
1419 | * immediately because we have to obtain cluster locks from | |
1420 | * quota files and we also don't want to just skip it because | |
1421 | * then quota usage would be out of sync until some node takes | |
1422 | * the slot. So we remember which nodes need quota recovery | |
1423 | * and when everything else is done, we recover quotas. */ | |
1424 | for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++); | |
1425 | if (i == rm_quota_used) | |
1426 | rm_quota[rm_quota_used++] = slot_num; | |
1427 | ||
1428 | status = ocfs2_recover_node(osb, node_num, slot_num); | |
1429 | skip_recovery: | |
553abd04 JB |
1430 | if (!status) { |
1431 | ocfs2_recovery_map_clear(osb, node_num); | |
1432 | } else { | |
ccd979bd MF |
1433 | mlog(ML_ERROR, |
1434 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1435 | status, node_num, | |
1436 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1437 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
ccd979bd MF |
1438 | } |
1439 | ||
553abd04 | 1440 | spin_lock(&osb->osb_lock); |
ccd979bd | 1441 | } |
553abd04 | 1442 | spin_unlock(&osb->osb_lock); |
b4107950 | 1443 | trace_ocfs2_recovery_thread_end(status); |
553abd04 | 1444 | |
539d8264 SM |
1445 | /* Refresh all journal recovery generations from disk */ |
1446 | status = ocfs2_check_journals_nolocks(osb); | |
1447 | status = (status == -EROFS) ? 0 : status; | |
1448 | if (status < 0) | |
1449 | mlog_errno(status); | |
1450 | ||
2205363d | 1451 | /* Now it is right time to recover quotas... We have to do this under |
25985edc | 1452 | * superblock lock so that no one can start using the slot (and crash) |
2205363d JK |
1453 | * before we recover it */ |
1454 | for (i = 0; i < rm_quota_used; i++) { | |
1455 | qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); | |
1456 | if (IS_ERR(qrec)) { | |
1457 | status = PTR_ERR(qrec); | |
1458 | mlog_errno(status); | |
1459 | continue; | |
1460 | } | |
1461 | ocfs2_queue_recovery_completion(osb->journal, rm_quota[i], | |
ed460cff JQ |
1462 | NULL, NULL, qrec, |
1463 | ORPHAN_NEED_TRUNCATE); | |
2205363d JK |
1464 | } |
1465 | ||
ccd979bd MF |
1466 | ocfs2_super_unlock(osb, 1); |
1467 | ||
9140db04 | 1468 | /* queue recovery for offline slots */ |
ed460cff | 1469 | ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); |
ccd979bd MF |
1470 | |
1471 | bail: | |
c74ec2f7 | 1472 | mutex_lock(&osb->recovery_lock); |
553abd04 | 1473 | if (!status && !ocfs2_recovery_completed(osb)) { |
c74ec2f7 | 1474 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1475 | goto restart; |
1476 | } | |
1477 | ||
9140db04 | 1478 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1479 | osb->recovery_thread_task = NULL; |
1480 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1481 | wake_up(&osb->recovery_event); | |
1482 | ||
c74ec2f7 | 1483 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1484 | |
d787ab09 | 1485 | kfree(rm_quota); |
2205363d | 1486 | |
ccd979bd MF |
1487 | /* no one is callint kthread_stop() for us so the kthread() api |
1488 | * requires that we call do_exit(). And it isn't exported, but | |
1489 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1490 | complete_and_exit(NULL, status); | |
ccd979bd MF |
1491 | } |
1492 | ||
1493 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1494 | { | |
c74ec2f7 | 1495 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1496 | |
b4107950 TM |
1497 | trace_ocfs2_recovery_thread(node_num, osb->node_num, |
1498 | osb->disable_recovery, osb->recovery_thread_task, | |
1499 | osb->disable_recovery ? | |
1500 | -1 : ocfs2_recovery_map_set(osb, node_num)); | |
ccd979bd | 1501 | |
b4107950 TM |
1502 | if (osb->disable_recovery) |
1503 | goto out; | |
ccd979bd MF |
1504 | |
1505 | if (osb->recovery_thread_task) | |
1506 | goto out; | |
1507 | ||
1508 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
5afc44e2 | 1509 | "ocfs2rec-%s", osb->uuid_str); |
ccd979bd MF |
1510 | if (IS_ERR(osb->recovery_thread_task)) { |
1511 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1512 | osb->recovery_thread_task = NULL; | |
1513 | } | |
1514 | ||
1515 | out: | |
c74ec2f7 | 1516 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1517 | wake_up(&osb->recovery_event); |
ccd979bd MF |
1518 | } |
1519 | ||
539d8264 SM |
1520 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1521 | int slot_num, | |
1522 | struct buffer_head **bh, | |
1523 | struct inode **ret_inode) | |
1524 | { | |
1525 | int status = -EACCES; | |
1526 | struct inode *inode = NULL; | |
1527 | ||
1528 | BUG_ON(slot_num >= osb->max_slots); | |
1529 | ||
1530 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1531 | slot_num); | |
1532 | if (!inode || is_bad_inode(inode)) { | |
1533 | mlog_errno(status); | |
1534 | goto bail; | |
1535 | } | |
1536 | SET_INODE_JOURNAL(inode); | |
1537 | ||
b657c95c | 1538 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
539d8264 SM |
1539 | if (status < 0) { |
1540 | mlog_errno(status); | |
1541 | goto bail; | |
1542 | } | |
1543 | ||
1544 | status = 0; | |
1545 | ||
1546 | bail: | |
1547 | if (inode) { | |
1548 | if (status || !ret_inode) | |
1549 | iput(inode); | |
1550 | else | |
1551 | *ret_inode = inode; | |
1552 | } | |
1553 | return status; | |
1554 | } | |
1555 | ||
ccd979bd MF |
1556 | /* Does the actual journal replay and marks the journal inode as |
1557 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1558 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1559 | int node_num, | |
1560 | int slot_num) | |
1561 | { | |
1562 | int status; | |
1563 | int got_lock = 0; | |
1564 | unsigned int flags; | |
1565 | struct inode *inode = NULL; | |
1566 | struct ocfs2_dinode *fe; | |
1567 | journal_t *journal = NULL; | |
1568 | struct buffer_head *bh = NULL; | |
539d8264 | 1569 | u32 slot_reco_gen; |
ccd979bd | 1570 | |
539d8264 SM |
1571 | status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); |
1572 | if (status) { | |
ccd979bd MF |
1573 | mlog_errno(status); |
1574 | goto done; | |
1575 | } | |
539d8264 SM |
1576 | |
1577 | fe = (struct ocfs2_dinode *)bh->b_data; | |
1578 | slot_reco_gen = ocfs2_get_recovery_generation(fe); | |
1579 | brelse(bh); | |
1580 | bh = NULL; | |
1581 | ||
1582 | /* | |
1583 | * As the fs recovery is asynchronous, there is a small chance that | |
1584 | * another node mounted (and recovered) the slot before the recovery | |
1585 | * thread could get the lock. To handle that, we dirty read the journal | |
1586 | * inode for that slot to get the recovery generation. If it is | |
1587 | * different than what we expected, the slot has been recovered. | |
1588 | * If not, it needs recovery. | |
1589 | */ | |
1590 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { | |
b4107950 | 1591 | trace_ocfs2_replay_journal_recovered(slot_num, |
539d8264 SM |
1592 | osb->slot_recovery_generations[slot_num], slot_reco_gen); |
1593 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
1594 | status = -EBUSY; | |
ccd979bd MF |
1595 | goto done; |
1596 | } | |
539d8264 SM |
1597 | |
1598 | /* Continue with recovery as the journal has not yet been recovered */ | |
ccd979bd | 1599 | |
e63aecb6 | 1600 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd | 1601 | if (status < 0) { |
b4107950 | 1602 | trace_ocfs2_replay_journal_lock_err(status); |
ccd979bd MF |
1603 | if (status != -ERESTARTSYS) |
1604 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1605 | goto done; | |
1606 | } | |
1607 | got_lock = 1; | |
1608 | ||
1609 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1610 | ||
1611 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
539d8264 | 1612 | slot_reco_gen = ocfs2_get_recovery_generation(fe); |
ccd979bd MF |
1613 | |
1614 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
b4107950 | 1615 | trace_ocfs2_replay_journal_skip(node_num); |
539d8264 SM |
1616 | /* Refresh recovery generation for the slot */ |
1617 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
ccd979bd MF |
1618 | goto done; |
1619 | } | |
1620 | ||
9140db04 SE |
1621 | /* we need to run complete recovery for offline orphan slots */ |
1622 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1623 | ||
619c200d SM |
1624 | printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\ |
1625 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1626 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1627 | |
1628 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1629 | ||
1630 | status = ocfs2_force_read_journal(inode); | |
1631 | if (status < 0) { | |
1632 | mlog_errno(status); | |
1633 | goto done; | |
1634 | } | |
1635 | ||
2b4e30fb | 1636 | journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
1637 | if (journal == NULL) { |
1638 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1639 | status = -EIO; | |
1640 | goto done; | |
1641 | } | |
1642 | ||
2b4e30fb | 1643 | status = jbd2_journal_load(journal); |
ccd979bd MF |
1644 | if (status < 0) { |
1645 | mlog_errno(status); | |
1646 | if (!igrab(inode)) | |
1647 | BUG(); | |
2b4e30fb | 1648 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1649 | goto done; |
1650 | } | |
1651 | ||
1652 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1653 | ||
1654 | /* wipe the journal */ | |
2b4e30fb JB |
1655 | jbd2_journal_lock_updates(journal); |
1656 | status = jbd2_journal_flush(journal); | |
1657 | jbd2_journal_unlock_updates(journal); | |
ccd979bd MF |
1658 | if (status < 0) |
1659 | mlog_errno(status); | |
1660 | ||
1661 | /* This will mark the node clean */ | |
1662 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1663 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1664 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1665 | ||
539d8264 SM |
1666 | /* Increment recovery generation to indicate successful recovery */ |
1667 | ocfs2_bump_recovery_generation(fe); | |
1668 | osb->slot_recovery_generations[slot_num] = | |
1669 | ocfs2_get_recovery_generation(fe); | |
1670 | ||
13723d00 | 1671 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 1672 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); |
ccd979bd MF |
1673 | if (status < 0) |
1674 | mlog_errno(status); | |
1675 | ||
1676 | if (!igrab(inode)) | |
1677 | BUG(); | |
1678 | ||
2b4e30fb | 1679 | jbd2_journal_destroy(journal); |
ccd979bd | 1680 | |
619c200d SM |
1681 | printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\ |
1682 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1683 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1684 | done: |
1685 | /* drop the lock on this nodes journal */ | |
1686 | if (got_lock) | |
e63aecb6 | 1687 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1688 | |
72865d92 | 1689 | iput(inode); |
a81cb88b | 1690 | brelse(bh); |
ccd979bd | 1691 | |
ccd979bd MF |
1692 | return status; |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * Do the most important parts of node recovery: | |
1697 | * - Replay it's journal | |
1698 | * - Stamp a clean local allocator file | |
1699 | * - Stamp a clean truncate log | |
1700 | * - Mark the node clean | |
1701 | * | |
1702 | * If this function completes without error, a node in OCFS2 can be | |
1703 | * said to have been safely recovered. As a result, failure during the | |
1704 | * second part of a nodes recovery process (local alloc recovery) is | |
1705 | * far less concerning. | |
1706 | */ | |
1707 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 1708 | int node_num, int slot_num) |
ccd979bd MF |
1709 | { |
1710 | int status = 0; | |
ccd979bd MF |
1711 | struct ocfs2_dinode *la_copy = NULL; |
1712 | struct ocfs2_dinode *tl_copy = NULL; | |
1713 | ||
b4107950 | 1714 | trace_ocfs2_recover_node(node_num, slot_num, osb->node_num); |
ccd979bd MF |
1715 | |
1716 | /* Should not ever be called to recover ourselves -- in that | |
1717 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1718 | BUG_ON(osb->node_num == node_num); |
ccd979bd | 1719 | |
ccd979bd MF |
1720 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1721 | if (status < 0) { | |
539d8264 | 1722 | if (status == -EBUSY) { |
b4107950 | 1723 | trace_ocfs2_recover_node_skip(slot_num, node_num); |
539d8264 SM |
1724 | status = 0; |
1725 | goto done; | |
1726 | } | |
ccd979bd MF |
1727 | mlog_errno(status); |
1728 | goto done; | |
1729 | } | |
1730 | ||
1731 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1732 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1733 | if (status < 0) { | |
1734 | mlog_errno(status); | |
1735 | goto done; | |
1736 | } | |
1737 | ||
1738 | /* An error from begin_truncate_log_recovery is not | |
1739 | * serious enough to warrant halting the rest of | |
1740 | * recovery. */ | |
1741 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1742 | if (status < 0) | |
1743 | mlog_errno(status); | |
1744 | ||
1745 | /* Likewise, this would be a strange but ultimately not so | |
1746 | * harmful place to get an error... */ | |
8e8a4603 | 1747 | status = ocfs2_clear_slot(osb, slot_num); |
ccd979bd MF |
1748 | if (status < 0) |
1749 | mlog_errno(status); | |
1750 | ||
1751 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1752 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
ed460cff | 1753 | tl_copy, NULL, ORPHAN_NEED_TRUNCATE); |
ccd979bd MF |
1754 | |
1755 | status = 0; | |
1756 | done: | |
1757 | ||
ccd979bd MF |
1758 | return status; |
1759 | } | |
1760 | ||
1761 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1762 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1763 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1764 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1765 | int slot_num) | |
1766 | { | |
1767 | int status, flags; | |
1768 | struct inode *inode = NULL; | |
1769 | ||
1770 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1771 | slot_num); | |
1772 | if (inode == NULL) { | |
1773 | mlog(ML_ERROR, "access error\n"); | |
1774 | status = -EACCES; | |
1775 | goto bail; | |
1776 | } | |
1777 | if (is_bad_inode(inode)) { | |
1778 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1779 | iput(inode); | |
1780 | inode = NULL; | |
1781 | status = -EACCES; | |
1782 | goto bail; | |
1783 | } | |
1784 | SET_INODE_JOURNAL(inode); | |
1785 | ||
1786 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
e63aecb6 | 1787 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
ccd979bd MF |
1788 | if (status < 0) { |
1789 | if (status != -EAGAIN) | |
1790 | mlog_errno(status); | |
1791 | goto bail; | |
1792 | } | |
1793 | ||
e63aecb6 | 1794 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1795 | bail: |
72865d92 | 1796 | iput(inode); |
ccd979bd MF |
1797 | |
1798 | return status; | |
1799 | } | |
1800 | ||
1801 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1802 | * slot info struct has been updated from disk. */ | |
1803 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1804 | { | |
d85b20e4 JB |
1805 | unsigned int node_num; |
1806 | int status, i; | |
a1af7d15 | 1807 | u32 gen; |
539d8264 SM |
1808 | struct buffer_head *bh = NULL; |
1809 | struct ocfs2_dinode *di; | |
ccd979bd MF |
1810 | |
1811 | /* This is called with the super block cluster lock, so we | |
1812 | * know that the slot map can't change underneath us. */ | |
1813 | ||
d85b20e4 | 1814 | for (i = 0; i < osb->max_slots; i++) { |
539d8264 SM |
1815 | /* Read journal inode to get the recovery generation */ |
1816 | status = ocfs2_read_journal_inode(osb, i, &bh, NULL); | |
1817 | if (status) { | |
1818 | mlog_errno(status); | |
1819 | goto bail; | |
1820 | } | |
1821 | di = (struct ocfs2_dinode *)bh->b_data; | |
a1af7d15 | 1822 | gen = ocfs2_get_recovery_generation(di); |
539d8264 SM |
1823 | brelse(bh); |
1824 | bh = NULL; | |
1825 | ||
a1af7d15 MF |
1826 | spin_lock(&osb->osb_lock); |
1827 | osb->slot_recovery_generations[i] = gen; | |
1828 | ||
b4107950 TM |
1829 | trace_ocfs2_mark_dead_nodes(i, |
1830 | osb->slot_recovery_generations[i]); | |
539d8264 | 1831 | |
a1af7d15 MF |
1832 | if (i == osb->slot_num) { |
1833 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1834 | continue; |
a1af7d15 | 1835 | } |
d85b20e4 JB |
1836 | |
1837 | status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); | |
a1af7d15 MF |
1838 | if (status == -ENOENT) { |
1839 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1840 | continue; |
a1af7d15 | 1841 | } |
ccd979bd | 1842 | |
a1af7d15 MF |
1843 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1844 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1845 | continue; |
a1af7d15 | 1846 | } |
d85b20e4 | 1847 | spin_unlock(&osb->osb_lock); |
ccd979bd MF |
1848 | |
1849 | /* Ok, we have a slot occupied by another node which | |
1850 | * is not in the recovery map. We trylock his journal | |
1851 | * file here to test if he's alive. */ | |
1852 | status = ocfs2_trylock_journal(osb, i); | |
1853 | if (!status) { | |
1854 | /* Since we're called from mount, we know that | |
1855 | * the recovery thread can't race us on | |
1856 | * setting / checking the recovery bits. */ | |
1857 | ocfs2_recovery_thread(osb, node_num); | |
1858 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1859 | mlog_errno(status); | |
1860 | goto bail; | |
1861 | } | |
ccd979bd | 1862 | } |
ccd979bd MF |
1863 | |
1864 | status = 0; | |
1865 | bail: | |
ccd979bd MF |
1866 | return status; |
1867 | } | |
1868 | ||
83273932 SE |
1869 | /* |
1870 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some | |
1871 | * randomness to the timeout to minimize multple nodes firing the timer at the | |
1872 | * same time. | |
1873 | */ | |
1874 | static inline unsigned long ocfs2_orphan_scan_timeout(void) | |
1875 | { | |
1876 | unsigned long time; | |
1877 | ||
1878 | get_random_bytes(&time, sizeof(time)); | |
1879 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); | |
1880 | return msecs_to_jiffies(time); | |
1881 | } | |
1882 | ||
1883 | /* | |
1884 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for | |
1885 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This | |
1886 | * is done to catch any orphans that are left over in orphan directories. | |
1887 | * | |
a035bff6 SM |
1888 | * It scans all slots, even ones that are in use. It does so to handle the |
1889 | * case described below: | |
1890 | * | |
1891 | * Node 1 has an inode it was using. The dentry went away due to memory | |
1892 | * pressure. Node 1 closes the inode, but it's on the free list. The node | |
1893 | * has the open lock. | |
1894 | * Node 2 unlinks the inode. It grabs the dentry lock to notify others, | |
1895 | * but node 1 has no dentry and doesn't get the message. It trylocks the | |
1896 | * open lock, sees that another node has a PR, and does nothing. | |
1897 | * Later node 2 runs its orphan dir. It igets the inode, trylocks the | |
1898 | * open lock, sees the PR still, and does nothing. | |
1899 | * Basically, we have to trigger an orphan iput on node 1. The only way | |
1900 | * for this to happen is if node 1 runs node 2's orphan dir. | |
1901 | * | |
83273932 SE |
1902 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT |
1903 | * seconds. It gets an EX lock on os_lockres and checks sequence number | |
1904 | * stored in LVB. If the sequence number has changed, it means some other | |
1905 | * node has done the scan. This node skips the scan and tracks the | |
1906 | * sequence number. If the sequence number didn't change, it means a scan | |
1907 | * hasn't happened. The node queues a scan and increments the | |
1908 | * sequence number in the LVB. | |
1909 | */ | |
b519ea6d | 1910 | static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) |
83273932 SE |
1911 | { |
1912 | struct ocfs2_orphan_scan *os; | |
1913 | int status, i; | |
1914 | u32 seqno = 0; | |
1915 | ||
1916 | os = &osb->osb_orphan_scan; | |
1917 | ||
692684e1 SM |
1918 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
1919 | goto out; | |
1920 | ||
b4107950 TM |
1921 | trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno, |
1922 | atomic_read(&os->os_state)); | |
1923 | ||
df152c24 | 1924 | status = ocfs2_orphan_scan_lock(osb, &seqno); |
83273932 SE |
1925 | if (status < 0) { |
1926 | if (status != -EAGAIN) | |
1927 | mlog_errno(status); | |
1928 | goto out; | |
1929 | } | |
1930 | ||
692684e1 SM |
1931 | /* Do no queue the tasks if the volume is being umounted */ |
1932 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
1933 | goto unlock; | |
1934 | ||
83273932 SE |
1935 | if (os->os_seqno != seqno) { |
1936 | os->os_seqno = seqno; | |
1937 | goto unlock; | |
1938 | } | |
1939 | ||
1940 | for (i = 0; i < osb->max_slots; i++) | |
1941 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, | |
ed460cff | 1942 | NULL, ORPHAN_NO_NEED_TRUNCATE); |
83273932 SE |
1943 | /* |
1944 | * We queued a recovery on orphan slots, increment the sequence | |
1945 | * number and update LVB so other node will skip the scan for a while | |
1946 | */ | |
1947 | seqno++; | |
15633a22 SE |
1948 | os->os_count++; |
1949 | os->os_scantime = CURRENT_TIME; | |
83273932 | 1950 | unlock: |
df152c24 | 1951 | ocfs2_orphan_scan_unlock(osb, seqno); |
83273932 | 1952 | out: |
b4107950 TM |
1953 | trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno, |
1954 | atomic_read(&os->os_state)); | |
83273932 SE |
1955 | return; |
1956 | } | |
1957 | ||
1958 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ | |
b519ea6d | 1959 | static void ocfs2_orphan_scan_work(struct work_struct *work) |
83273932 SE |
1960 | { |
1961 | struct ocfs2_orphan_scan *os; | |
1962 | struct ocfs2_super *osb; | |
1963 | ||
1964 | os = container_of(work, struct ocfs2_orphan_scan, | |
1965 | os_orphan_scan_work.work); | |
1966 | osb = os->os_osb; | |
1967 | ||
1968 | mutex_lock(&os->os_lock); | |
1969 | ocfs2_queue_orphan_scan(osb); | |
692684e1 | 1970 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) |
35ddf78e | 1971 | queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work, |
692684e1 | 1972 | ocfs2_orphan_scan_timeout()); |
83273932 SE |
1973 | mutex_unlock(&os->os_lock); |
1974 | } | |
1975 | ||
1976 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) | |
1977 | { | |
1978 | struct ocfs2_orphan_scan *os; | |
1979 | ||
1980 | os = &osb->osb_orphan_scan; | |
df152c24 SM |
1981 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { |
1982 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1983 | mutex_lock(&os->os_lock); | |
1984 | cancel_delayed_work(&os->os_orphan_scan_work); | |
1985 | mutex_unlock(&os->os_lock); | |
1986 | } | |
83273932 SE |
1987 | } |
1988 | ||
df152c24 | 1989 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
83273932 SE |
1990 | { |
1991 | struct ocfs2_orphan_scan *os; | |
1992 | ||
1993 | os = &osb->osb_orphan_scan; | |
1994 | os->os_osb = osb; | |
15633a22 | 1995 | os->os_count = 0; |
3211949f | 1996 | os->os_seqno = 0; |
83273932 | 1997 | mutex_init(&os->os_lock); |
df152c24 | 1998 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
8b712cd5 | 1999 | } |
83273932 | 2000 | |
8b712cd5 JM |
2001 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
2002 | { | |
2003 | struct ocfs2_orphan_scan *os; | |
2004 | ||
2005 | os = &osb->osb_orphan_scan; | |
2006 | os->os_scantime = CURRENT_TIME; | |
df152c24 SM |
2007 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
2008 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
2009 | else { | |
2010 | atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); | |
35ddf78e | 2011 | queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work, |
40f165f4 | 2012 | ocfs2_orphan_scan_timeout()); |
df152c24 | 2013 | } |
83273932 SE |
2014 | } |
2015 | ||
5eae5b96 | 2016 | struct ocfs2_orphan_filldir_priv { |
3704412b | 2017 | struct dir_context ctx; |
5eae5b96 MF |
2018 | struct inode *head; |
2019 | struct ocfs2_super *osb; | |
30edc43c | 2020 | enum ocfs2_orphan_reco_type orphan_reco_type; |
5eae5b96 MF |
2021 | }; |
2022 | ||
ac7576f4 MS |
2023 | static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name, |
2024 | int name_len, loff_t pos, u64 ino, | |
2025 | unsigned type) | |
5eae5b96 | 2026 | { |
ac7576f4 MS |
2027 | struct ocfs2_orphan_filldir_priv *p = |
2028 | container_of(ctx, struct ocfs2_orphan_filldir_priv, ctx); | |
5eae5b96 MF |
2029 | struct inode *iter; |
2030 | ||
2031 | if (name_len == 1 && !strncmp(".", name, 1)) | |
2032 | return 0; | |
2033 | if (name_len == 2 && !strncmp("..", name, 2)) | |
2034 | return 0; | |
2035 | ||
30edc43c JQ |
2036 | /* do not include dio entry in case of orphan scan */ |
2037 | if ((p->orphan_reco_type == ORPHAN_NO_NEED_TRUNCATE) && | |
2038 | (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, | |
2039 | OCFS2_DIO_ORPHAN_PREFIX_LEN))) | |
2040 | return 0; | |
2041 | ||
5eae5b96 MF |
2042 | /* Skip bad inodes so that recovery can continue */ |
2043 | iter = ocfs2_iget(p->osb, ino, | |
5fa0613e | 2044 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); |
5eae5b96 MF |
2045 | if (IS_ERR(iter)) |
2046 | return 0; | |
2047 | ||
93d911fc JQ |
2048 | if (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, |
2049 | OCFS2_DIO_ORPHAN_PREFIX_LEN)) | |
2050 | OCFS2_I(iter)->ip_flags |= OCFS2_INODE_DIO_ORPHAN_ENTRY; | |
2051 | ||
ed460cff JQ |
2052 | /* Skip inodes which are already added to recover list, since dio may |
2053 | * happen concurrently with unlink/rename */ | |
2054 | if (OCFS2_I(iter)->ip_next_orphan) { | |
2055 | iput(iter); | |
2056 | return 0; | |
2057 | } | |
2058 | ||
b4107950 | 2059 | trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno); |
5eae5b96 MF |
2060 | /* No locking is required for the next_orphan queue as there |
2061 | * is only ever a single process doing orphan recovery. */ | |
2062 | OCFS2_I(iter)->ip_next_orphan = p->head; | |
2063 | p->head = iter; | |
2064 | ||
2065 | return 0; | |
2066 | } | |
2067 | ||
b4df6ed8 MF |
2068 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
2069 | int slot, | |
30edc43c JQ |
2070 | struct inode **head, |
2071 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
ccd979bd | 2072 | { |
b4df6ed8 | 2073 | int status; |
ccd979bd | 2074 | struct inode *orphan_dir_inode = NULL; |
3704412b AV |
2075 | struct ocfs2_orphan_filldir_priv priv = { |
2076 | .ctx.actor = ocfs2_orphan_filldir, | |
2077 | .osb = osb, | |
30edc43c JQ |
2078 | .head = *head, |
2079 | .orphan_reco_type = orphan_reco_type | |
3704412b | 2080 | }; |
ccd979bd MF |
2081 | |
2082 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2083 | ORPHAN_DIR_SYSTEM_INODE, | |
2084 | slot); | |
2085 | if (!orphan_dir_inode) { | |
2086 | status = -ENOENT; | |
2087 | mlog_errno(status); | |
b4df6ed8 | 2088 | return status; |
2bd63216 | 2089 | } |
ccd979bd | 2090 | |
5955102c | 2091 | inode_lock(orphan_dir_inode); |
e63aecb6 | 2092 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
ccd979bd | 2093 | if (status < 0) { |
ccd979bd MF |
2094 | mlog_errno(status); |
2095 | goto out; | |
2096 | } | |
ccd979bd | 2097 | |
3704412b | 2098 | status = ocfs2_dir_foreach(orphan_dir_inode, &priv.ctx); |
5eae5b96 MF |
2099 | if (status) { |
2100 | mlog_errno(status); | |
a86370fb | 2101 | goto out_cluster; |
ccd979bd | 2102 | } |
ccd979bd | 2103 | |
5eae5b96 MF |
2104 | *head = priv.head; |
2105 | ||
a86370fb | 2106 | out_cluster: |
e63aecb6 | 2107 | ocfs2_inode_unlock(orphan_dir_inode, 0); |
b4df6ed8 | 2108 | out: |
5955102c | 2109 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2110 | iput(orphan_dir_inode); |
b4df6ed8 MF |
2111 | return status; |
2112 | } | |
2113 | ||
2114 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
2115 | int slot) | |
2116 | { | |
2117 | int ret; | |
2118 | ||
2119 | spin_lock(&osb->osb_lock); | |
2120 | ret = !osb->osb_orphan_wipes[slot]; | |
2121 | spin_unlock(&osb->osb_lock); | |
2122 | return ret; | |
2123 | } | |
2124 | ||
2125 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
2126 | int slot) | |
2127 | { | |
2128 | spin_lock(&osb->osb_lock); | |
2129 | /* Mark ourselves such that new processes in delete_inode() | |
2130 | * know to quit early. */ | |
2131 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2132 | while (osb->osb_orphan_wipes[slot]) { | |
2133 | /* If any processes are already in the middle of an | |
2134 | * orphan wipe on this dir, then we need to wait for | |
2135 | * them. */ | |
2136 | spin_unlock(&osb->osb_lock); | |
2137 | wait_event_interruptible(osb->osb_wipe_event, | |
2138 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
2139 | spin_lock(&osb->osb_lock); | |
2140 | } | |
2141 | spin_unlock(&osb->osb_lock); | |
2142 | } | |
2143 | ||
2144 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
2145 | int slot) | |
2146 | { | |
2147 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2148 | } | |
2149 | ||
2150 | /* | |
2151 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
2152 | * must run during recovery. Our strategy here is to build a list of | |
2153 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
2154 | * (most) of the rest of the work. | |
2155 | * | |
2156 | * Orphan recovery can happen at any time, not just mount so we have a | |
2157 | * couple of extra considerations. | |
2158 | * | |
2159 | * - We grab as many inodes as we can under the orphan dir lock - | |
2160 | * doing iget() outside the orphan dir risks getting a reference on | |
2161 | * an invalid inode. | |
2162 | * - We must be sure not to deadlock with other processes on the | |
2163 | * system wanting to run delete_inode(). This can happen when they go | |
2164 | * to lock the orphan dir and the orphan recovery process attempts to | |
2165 | * iget() inside the orphan dir lock. This can be avoided by | |
2166 | * advertising our state to ocfs2_delete_inode(). | |
2167 | */ | |
2168 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
ed460cff JQ |
2169 | int slot, |
2170 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
b4df6ed8 MF |
2171 | { |
2172 | int ret = 0; | |
2173 | struct inode *inode = NULL; | |
2174 | struct inode *iter; | |
2175 | struct ocfs2_inode_info *oi; | |
cf1776a9 JQ |
2176 | struct buffer_head *di_bh = NULL; |
2177 | struct ocfs2_dinode *di = NULL; | |
b4df6ed8 | 2178 | |
b4107950 | 2179 | trace_ocfs2_recover_orphans(slot); |
b4df6ed8 MF |
2180 | |
2181 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
30edc43c | 2182 | ret = ocfs2_queue_orphans(osb, slot, &inode, orphan_reco_type); |
b4df6ed8 MF |
2183 | ocfs2_clear_recovering_orphan_dir(osb, slot); |
2184 | ||
2185 | /* Error here should be noted, but we want to continue with as | |
2186 | * many queued inodes as we've got. */ | |
2187 | if (ret) | |
2188 | mlog_errno(ret); | |
ccd979bd MF |
2189 | |
2190 | while (inode) { | |
2191 | oi = OCFS2_I(inode); | |
b4107950 TM |
2192 | trace_ocfs2_recover_orphans_iput( |
2193 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
2194 | |
2195 | iter = oi->ip_next_orphan; | |
ed460cff | 2196 | oi->ip_next_orphan = NULL; |
ccd979bd | 2197 | |
93d911fc | 2198 | if (oi->ip_flags & OCFS2_INODE_DIO_ORPHAN_ENTRY) { |
5955102c | 2199 | inode_lock(inode); |
93d911fc JQ |
2200 | ret = ocfs2_rw_lock(inode, 1); |
2201 | if (ret < 0) { | |
2202 | mlog_errno(ret); | |
2203 | goto unlock_mutex; | |
2204 | } | |
2205 | /* | |
2206 | * We need to take and drop the inode lock to | |
2207 | * force read inode from disk. | |
2208 | */ | |
2209 | ret = ocfs2_inode_lock(inode, &di_bh, 1); | |
2210 | if (ret) { | |
2211 | mlog_errno(ret); | |
2212 | goto unlock_rw; | |
2213 | } | |
2214 | ||
2215 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2216 | ||
2217 | if (di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)) { | |
2218 | ret = ocfs2_truncate_file(inode, di_bh, | |
2219 | i_size_read(inode)); | |
2220 | if (ret < 0) { | |
2221 | if (ret != -ENOSPC) | |
2222 | mlog_errno(ret); | |
2223 | goto unlock_inode; | |
2224 | } | |
cf1776a9 | 2225 | |
93d911fc JQ |
2226 | ret = ocfs2_del_inode_from_orphan(osb, inode, |
2227 | di_bh, 0, 0); | |
2228 | if (ret) | |
2229 | mlog_errno(ret); | |
2230 | } | |
2231 | unlock_inode: | |
2232 | ocfs2_inode_unlock(inode, 1); | |
2233 | brelse(di_bh); | |
2234 | di_bh = NULL; | |
2235 | unlock_rw: | |
2236 | ocfs2_rw_unlock(inode, 1); | |
2237 | unlock_mutex: | |
5955102c | 2238 | inode_unlock(inode); |
ed460cff | 2239 | |
93d911fc JQ |
2240 | /* clear dio flag in ocfs2_inode_info */ |
2241 | oi->ip_flags &= ~OCFS2_INODE_DIO_ORPHAN_ENTRY; | |
2242 | } else { | |
ed460cff JQ |
2243 | spin_lock(&oi->ip_lock); |
2244 | /* Set the proper information to get us going into | |
2245 | * ocfs2_delete_inode. */ | |
2246 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
2247 | spin_unlock(&oi->ip_lock); | |
ad694821 JQ |
2248 | } |
2249 | ||
ccd979bd | 2250 | iput(inode); |
ccd979bd MF |
2251 | inode = iter; |
2252 | } | |
2253 | ||
b4df6ed8 | 2254 | return ret; |
ccd979bd MF |
2255 | } |
2256 | ||
19ece546 | 2257 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
ccd979bd MF |
2258 | { |
2259 | /* This check is good because ocfs2 will wait on our recovery | |
2260 | * thread before changing it to something other than MOUNTED | |
2261 | * or DISABLED. */ | |
2262 | wait_event(osb->osb_mount_event, | |
19ece546 JK |
2263 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2264 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || | |
ccd979bd MF |
2265 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2266 | ||
2267 | /* If there's an error on mount, then we may never get to the | |
2268 | * MOUNTED flag, but this is set right before | |
2269 | * dismount_volume() so we can trust it. */ | |
2270 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
b4107950 | 2271 | trace_ocfs2_wait_on_mount(VOLUME_DISABLED); |
ccd979bd MF |
2272 | mlog(0, "mount error, exiting!\n"); |
2273 | return -EBUSY; | |
2274 | } | |
2275 | ||
2276 | return 0; | |
2277 | } | |
2278 | ||
2279 | static int ocfs2_commit_thread(void *arg) | |
2280 | { | |
2281 | int status; | |
2282 | struct ocfs2_super *osb = arg; | |
2283 | struct ocfs2_journal *journal = osb->journal; | |
2284 | ||
2285 | /* we can trust j_num_trans here because _should_stop() is only set in | |
2286 | * shutdown and nobody other than ourselves should be able to start | |
2287 | * transactions. committing on shutdown might take a few iterations | |
2288 | * as final transactions put deleted inodes on the list */ | |
2289 | while (!(kthread_should_stop() && | |
2290 | atomic_read(&journal->j_num_trans) == 0)) { | |
2291 | ||
745ae8ba MF |
2292 | wait_event_interruptible(osb->checkpoint_event, |
2293 | atomic_read(&journal->j_num_trans) | |
2294 | || kthread_should_stop()); | |
ccd979bd MF |
2295 | |
2296 | status = ocfs2_commit_cache(osb); | |
55b465b6 JQ |
2297 | if (status < 0) { |
2298 | static unsigned long abort_warn_time; | |
2299 | ||
2300 | /* Warn about this once per minute */ | |
2301 | if (printk_timed_ratelimit(&abort_warn_time, 60*HZ)) | |
2302 | mlog(ML_ERROR, "status = %d, journal is " | |
2303 | "already aborted.\n", status); | |
2304 | /* | |
2305 | * After ocfs2_commit_cache() fails, j_num_trans has a | |
2306 | * non-zero value. Sleep here to avoid a busy-wait | |
2307 | * loop. | |
2308 | */ | |
2309 | msleep_interruptible(1000); | |
2310 | } | |
ccd979bd MF |
2311 | |
2312 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
2313 | mlog(ML_KTHREAD, | |
2314 | "commit_thread: %u transactions pending on " | |
2315 | "shutdown\n", | |
2316 | atomic_read(&journal->j_num_trans)); | |
2317 | } | |
2318 | } | |
2319 | ||
2320 | return 0; | |
2321 | } | |
2322 | ||
539d8264 SM |
2323 | /* Reads all the journal inodes without taking any cluster locks. Used |
2324 | * for hard readonly access to determine whether any journal requires | |
2325 | * recovery. Also used to refresh the recovery generation numbers after | |
2326 | * a journal has been recovered by another node. | |
2327 | */ | |
ccd979bd MF |
2328 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2329 | { | |
2330 | int ret = 0; | |
2331 | unsigned int slot; | |
539d8264 | 2332 | struct buffer_head *di_bh = NULL; |
ccd979bd | 2333 | struct ocfs2_dinode *di; |
539d8264 | 2334 | int journal_dirty = 0; |
ccd979bd MF |
2335 | |
2336 | for(slot = 0; slot < osb->max_slots; slot++) { | |
539d8264 SM |
2337 | ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); |
2338 | if (ret) { | |
ccd979bd MF |
2339 | mlog_errno(ret); |
2340 | goto out; | |
2341 | } | |
2342 | ||
2343 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2344 | ||
539d8264 SM |
2345 | osb->slot_recovery_generations[slot] = |
2346 | ocfs2_get_recovery_generation(di); | |
2347 | ||
ccd979bd MF |
2348 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2349 | OCFS2_JOURNAL_DIRTY_FL) | |
539d8264 | 2350 | journal_dirty = 1; |
ccd979bd MF |
2351 | |
2352 | brelse(di_bh); | |
539d8264 | 2353 | di_bh = NULL; |
ccd979bd MF |
2354 | } |
2355 | ||
2356 | out: | |
539d8264 SM |
2357 | if (journal_dirty) |
2358 | ret = -EROFS; | |
ccd979bd MF |
2359 | return ret; |
2360 | } |