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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
fa60ce2c | 2 | /* |
ccd979bd MF |
3 | * journal.c |
4 | * | |
5 | * Defines functions of journalling api | |
6 | * | |
7 | * Copyright (C) 2003, 2004 Oracle. All rights reserved. | |
ccd979bd MF |
8 | */ |
9 | ||
10 | #include <linux/fs.h> | |
11 | #include <linux/types.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/highmem.h> | |
14 | #include <linux/kthread.h> | |
83273932 SE |
15 | #include <linux/time.h> |
16 | #include <linux/random.h> | |
55b465b6 | 17 | #include <linux/delay.h> |
ccd979bd | 18 | |
ccd979bd MF |
19 | #include <cluster/masklog.h> |
20 | ||
21 | #include "ocfs2.h" | |
22 | ||
23 | #include "alloc.h" | |
50655ae9 | 24 | #include "blockcheck.h" |
316f4b9f | 25 | #include "dir.h" |
ccd979bd MF |
26 | #include "dlmglue.h" |
27 | #include "extent_map.h" | |
28 | #include "heartbeat.h" | |
29 | #include "inode.h" | |
30 | #include "journal.h" | |
31 | #include "localalloc.h" | |
ccd979bd MF |
32 | #include "slot_map.h" |
33 | #include "super.h" | |
ccd979bd | 34 | #include "sysfile.h" |
0cf2f763 | 35 | #include "uptodate.h" |
2205363d | 36 | #include "quota.h" |
ed460cff JQ |
37 | #include "file.h" |
38 | #include "namei.h" | |
ccd979bd MF |
39 | |
40 | #include "buffer_head_io.h" | |
b4107950 | 41 | #include "ocfs2_trace.h" |
ccd979bd | 42 | |
34af946a | 43 | DEFINE_SPINLOCK(trans_inc_lock); |
ccd979bd | 44 | |
83273932 SE |
45 | #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 |
46 | ||
ccd979bd MF |
47 | static int ocfs2_force_read_journal(struct inode *inode); |
48 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 49 | int node_num, int slot_num); |
ccd979bd MF |
50 | static int __ocfs2_recovery_thread(void *arg); |
51 | static int ocfs2_commit_cache(struct ocfs2_super *osb); | |
19ece546 | 52 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); |
ccd979bd | 53 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 54 | int dirty, int replayed); |
ccd979bd MF |
55 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
56 | int slot_num); | |
57 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
ed460cff JQ |
58 | int slot, |
59 | enum ocfs2_orphan_reco_type orphan_reco_type); | |
ccd979bd | 60 | static int ocfs2_commit_thread(void *arg); |
9140db04 SE |
61 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
62 | int slot_num, | |
63 | struct ocfs2_dinode *la_dinode, | |
64 | struct ocfs2_dinode *tl_dinode, | |
ed460cff JQ |
65 | struct ocfs2_quota_recovery *qrec, |
66 | enum ocfs2_orphan_reco_type orphan_reco_type); | |
ccd979bd | 67 | |
19ece546 JK |
68 | static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) |
69 | { | |
70 | return __ocfs2_wait_on_mount(osb, 0); | |
71 | } | |
72 | ||
73 | static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) | |
74 | { | |
75 | return __ocfs2_wait_on_mount(osb, 1); | |
76 | } | |
77 | ||
9140db04 SE |
78 | /* |
79 | * This replay_map is to track online/offline slots, so we could recover | |
80 | * offline slots during recovery and mount | |
81 | */ | |
82 | ||
83 | enum ocfs2_replay_state { | |
84 | REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ | |
85 | REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ | |
86 | REPLAY_DONE /* Replay was already queued */ | |
87 | }; | |
88 | ||
89 | struct ocfs2_replay_map { | |
90 | unsigned int rm_slots; | |
91 | enum ocfs2_replay_state rm_state; | |
3c9210d4 | 92 | unsigned char rm_replay_slots[]; |
9140db04 SE |
93 | }; |
94 | ||
b519ea6d | 95 | static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) |
9140db04 SE |
96 | { |
97 | if (!osb->replay_map) | |
98 | return; | |
99 | ||
100 | /* If we've already queued the replay, we don't have any more to do */ | |
101 | if (osb->replay_map->rm_state == REPLAY_DONE) | |
102 | return; | |
103 | ||
104 | osb->replay_map->rm_state = state; | |
105 | } | |
106 | ||
107 | int ocfs2_compute_replay_slots(struct ocfs2_super *osb) | |
108 | { | |
109 | struct ocfs2_replay_map *replay_map; | |
110 | int i, node_num; | |
111 | ||
112 | /* If replay map is already set, we don't do it again */ | |
113 | if (osb->replay_map) | |
114 | return 0; | |
115 | ||
116 | replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + | |
117 | (osb->max_slots * sizeof(char)), GFP_KERNEL); | |
118 | ||
119 | if (!replay_map) { | |
120 | mlog_errno(-ENOMEM); | |
121 | return -ENOMEM; | |
122 | } | |
123 | ||
124 | spin_lock(&osb->osb_lock); | |
125 | ||
126 | replay_map->rm_slots = osb->max_slots; | |
127 | replay_map->rm_state = REPLAY_UNNEEDED; | |
128 | ||
129 | /* set rm_replay_slots for offline slot(s) */ | |
130 | for (i = 0; i < replay_map->rm_slots; i++) { | |
131 | if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT) | |
132 | replay_map->rm_replay_slots[i] = 1; | |
133 | } | |
134 | ||
135 | osb->replay_map = replay_map; | |
136 | spin_unlock(&osb->osb_lock); | |
137 | return 0; | |
138 | } | |
139 | ||
b519ea6d | 140 | static void ocfs2_queue_replay_slots(struct ocfs2_super *osb, |
ed460cff | 141 | enum ocfs2_orphan_reco_type orphan_reco_type) |
9140db04 SE |
142 | { |
143 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
144 | int i; | |
145 | ||
146 | if (!replay_map) | |
147 | return; | |
148 | ||
149 | if (replay_map->rm_state != REPLAY_NEEDED) | |
150 | return; | |
151 | ||
152 | for (i = 0; i < replay_map->rm_slots; i++) | |
153 | if (replay_map->rm_replay_slots[i]) | |
154 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, | |
ed460cff JQ |
155 | NULL, NULL, |
156 | orphan_reco_type); | |
9140db04 SE |
157 | replay_map->rm_state = REPLAY_DONE; |
158 | } | |
159 | ||
b519ea6d | 160 | static void ocfs2_free_replay_slots(struct ocfs2_super *osb) |
9140db04 SE |
161 | { |
162 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
163 | ||
164 | if (!osb->replay_map) | |
165 | return; | |
166 | ||
167 | kfree(replay_map); | |
168 | osb->replay_map = NULL; | |
169 | } | |
170 | ||
553abd04 JB |
171 | int ocfs2_recovery_init(struct ocfs2_super *osb) |
172 | { | |
173 | struct ocfs2_recovery_map *rm; | |
174 | ||
175 | mutex_init(&osb->recovery_lock); | |
176 | osb->disable_recovery = 0; | |
177 | osb->recovery_thread_task = NULL; | |
178 | init_waitqueue_head(&osb->recovery_event); | |
179 | ||
180 | rm = kzalloc(sizeof(struct ocfs2_recovery_map) + | |
181 | osb->max_slots * sizeof(unsigned int), | |
182 | GFP_KERNEL); | |
183 | if (!rm) { | |
184 | mlog_errno(-ENOMEM); | |
185 | return -ENOMEM; | |
186 | } | |
187 | ||
188 | rm->rm_entries = (unsigned int *)((char *)rm + | |
189 | sizeof(struct ocfs2_recovery_map)); | |
190 | osb->recovery_map = rm; | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
195 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
196 | * memory barriers to make sure that we'll see the null task before | |
197 | * being woken up */ | |
198 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
199 | { | |
200 | mb(); | |
201 | return osb->recovery_thread_task != NULL; | |
202 | } | |
203 | ||
204 | void ocfs2_recovery_exit(struct ocfs2_super *osb) | |
205 | { | |
206 | struct ocfs2_recovery_map *rm; | |
207 | ||
208 | /* disable any new recovery threads and wait for any currently | |
209 | * running ones to exit. Do this before setting the vol_state. */ | |
210 | mutex_lock(&osb->recovery_lock); | |
211 | osb->disable_recovery = 1; | |
212 | mutex_unlock(&osb->recovery_lock); | |
213 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); | |
214 | ||
215 | /* At this point, we know that no more recovery threads can be | |
216 | * launched, so wait for any recovery completion work to | |
217 | * complete. */ | |
b918c430 YL |
218 | if (osb->ocfs2_wq) |
219 | flush_workqueue(osb->ocfs2_wq); | |
553abd04 JB |
220 | |
221 | /* | |
222 | * Now that recovery is shut down, and the osb is about to be | |
223 | * freed, the osb_lock is not taken here. | |
224 | */ | |
225 | rm = osb->recovery_map; | |
226 | /* XXX: Should we bug if there are dirty entries? */ | |
227 | ||
228 | kfree(rm); | |
229 | } | |
230 | ||
231 | static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, | |
232 | unsigned int node_num) | |
233 | { | |
234 | int i; | |
235 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
236 | ||
237 | assert_spin_locked(&osb->osb_lock); | |
238 | ||
239 | for (i = 0; i < rm->rm_used; i++) { | |
240 | if (rm->rm_entries[i] == node_num) | |
241 | return 1; | |
242 | } | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | /* Behaves like test-and-set. Returns the previous value */ | |
248 | static int ocfs2_recovery_map_set(struct ocfs2_super *osb, | |
249 | unsigned int node_num) | |
250 | { | |
251 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
252 | ||
253 | spin_lock(&osb->osb_lock); | |
254 | if (__ocfs2_recovery_map_test(osb, node_num)) { | |
255 | spin_unlock(&osb->osb_lock); | |
256 | return 1; | |
257 | } | |
258 | ||
259 | /* XXX: Can this be exploited? Not from o2dlm... */ | |
260 | BUG_ON(rm->rm_used >= osb->max_slots); | |
261 | ||
262 | rm->rm_entries[rm->rm_used] = node_num; | |
263 | rm->rm_used++; | |
264 | spin_unlock(&osb->osb_lock); | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
269 | static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, | |
270 | unsigned int node_num) | |
271 | { | |
272 | int i; | |
273 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
274 | ||
275 | spin_lock(&osb->osb_lock); | |
276 | ||
277 | for (i = 0; i < rm->rm_used; i++) { | |
278 | if (rm->rm_entries[i] == node_num) | |
279 | break; | |
280 | } | |
281 | ||
282 | if (i < rm->rm_used) { | |
283 | /* XXX: be careful with the pointer math */ | |
284 | memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), | |
285 | (rm->rm_used - i - 1) * sizeof(unsigned int)); | |
286 | rm->rm_used--; | |
287 | } | |
288 | ||
289 | spin_unlock(&osb->osb_lock); | |
290 | } | |
291 | ||
ccd979bd MF |
292 | static int ocfs2_commit_cache(struct ocfs2_super *osb) |
293 | { | |
294 | int status = 0; | |
295 | unsigned int flushed; | |
ccd979bd MF |
296 | struct ocfs2_journal *journal = NULL; |
297 | ||
ccd979bd MF |
298 | journal = osb->journal; |
299 | ||
300 | /* Flush all pending commits and checkpoint the journal. */ | |
301 | down_write(&journal->j_trans_barrier); | |
302 | ||
b4107950 TM |
303 | flushed = atomic_read(&journal->j_num_trans); |
304 | trace_ocfs2_commit_cache_begin(flushed); | |
305 | if (flushed == 0) { | |
ccd979bd | 306 | up_write(&journal->j_trans_barrier); |
ccd979bd MF |
307 | goto finally; |
308 | } | |
309 | ||
2b4e30fb JB |
310 | jbd2_journal_lock_updates(journal->j_journal); |
311 | status = jbd2_journal_flush(journal->j_journal); | |
312 | jbd2_journal_unlock_updates(journal->j_journal); | |
ccd979bd MF |
313 | if (status < 0) { |
314 | up_write(&journal->j_trans_barrier); | |
315 | mlog_errno(status); | |
316 | goto finally; | |
317 | } | |
318 | ||
f9c57ada | 319 | ocfs2_inc_trans_id(journal); |
ccd979bd MF |
320 | |
321 | flushed = atomic_read(&journal->j_num_trans); | |
322 | atomic_set(&journal->j_num_trans, 0); | |
323 | up_write(&journal->j_trans_barrier); | |
324 | ||
b4107950 | 325 | trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed); |
ccd979bd | 326 | |
34d024f8 | 327 | ocfs2_wake_downconvert_thread(osb); |
ccd979bd MF |
328 | wake_up(&journal->j_checkpointed); |
329 | finally: | |
ccd979bd MF |
330 | return status; |
331 | } | |
332 | ||
1fabe148 | 333 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
ccd979bd | 334 | { |
ccd979bd | 335 | journal_t *journal = osb->journal->j_journal; |
1fabe148 | 336 | handle_t *handle; |
ccd979bd | 337 | |
ebdec83b | 338 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd | 339 | |
65eff9cc MF |
340 | if (ocfs2_is_hard_readonly(osb)) |
341 | return ERR_PTR(-EROFS); | |
ccd979bd MF |
342 | |
343 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
344 | BUG_ON(max_buffs <= 0); | |
345 | ||
90e86a63 JK |
346 | /* Nested transaction? Just return the handle... */ |
347 | if (journal_current_handle()) | |
348 | return jbd2_journal_start(journal, max_buffs); | |
ccd979bd | 349 | |
fef6925c JK |
350 | sb_start_intwrite(osb->sb); |
351 | ||
ccd979bd MF |
352 | down_read(&osb->journal->j_trans_barrier); |
353 | ||
2b4e30fb | 354 | handle = jbd2_journal_start(journal, max_buffs); |
1fabe148 | 355 | if (IS_ERR(handle)) { |
ccd979bd | 356 | up_read(&osb->journal->j_trans_barrier); |
fef6925c | 357 | sb_end_intwrite(osb->sb); |
ccd979bd | 358 | |
1fabe148 | 359 | mlog_errno(PTR_ERR(handle)); |
ccd979bd MF |
360 | |
361 | if (is_journal_aborted(journal)) { | |
7ecef14a | 362 | ocfs2_abort(osb->sb, "Detected aborted journal\n"); |
1fabe148 | 363 | handle = ERR_PTR(-EROFS); |
ccd979bd | 364 | } |
c271c5c2 SM |
365 | } else { |
366 | if (!ocfs2_mount_local(osb)) | |
367 | atomic_inc(&(osb->journal->j_num_trans)); | |
368 | } | |
ccd979bd | 369 | |
ccd979bd | 370 | return handle; |
ccd979bd MF |
371 | } |
372 | ||
1fabe148 MF |
373 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
374 | handle_t *handle) | |
ccd979bd | 375 | { |
90e86a63 | 376 | int ret, nested; |
02dc1af4 | 377 | struct ocfs2_journal *journal = osb->journal; |
ccd979bd MF |
378 | |
379 | BUG_ON(!handle); | |
380 | ||
90e86a63 | 381 | nested = handle->h_ref > 1; |
2b4e30fb | 382 | ret = jbd2_journal_stop(handle); |
1fabe148 MF |
383 | if (ret < 0) |
384 | mlog_errno(ret); | |
ccd979bd | 385 | |
fef6925c | 386 | if (!nested) { |
90e86a63 | 387 | up_read(&journal->j_trans_barrier); |
fef6925c JK |
388 | sb_end_intwrite(osb->sb); |
389 | } | |
ccd979bd | 390 | |
1fabe148 | 391 | return ret; |
ccd979bd MF |
392 | } |
393 | ||
394 | /* | |
c901fb00 | 395 | * 'nblocks' is what you want to add to the current transaction. |
ccd979bd | 396 | * |
2b4e30fb | 397 | * This might call jbd2_journal_restart() which will commit dirty buffers |
e8aed345 MF |
398 | * and then restart the transaction. Before calling |
399 | * ocfs2_extend_trans(), any changed blocks should have been | |
400 | * dirtied. After calling it, all blocks which need to be changed must | |
401 | * go through another set of journal_access/journal_dirty calls. | |
402 | * | |
ccd979bd MF |
403 | * WARNING: This will not release any semaphores or disk locks taken |
404 | * during the transaction, so make sure they were taken *before* | |
405 | * start_trans or we'll have ordering deadlocks. | |
406 | * | |
407 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
408 | * good because transaction ids haven't yet been recorded on the | |
409 | * cluster locks associated with this handle. | |
410 | */ | |
1fc58146 | 411 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
ccd979bd | 412 | { |
c901fb00 | 413 | int status, old_nblocks; |
ccd979bd MF |
414 | |
415 | BUG_ON(!handle); | |
c901fb00 | 416 | BUG_ON(nblocks < 0); |
ccd979bd | 417 | |
c901fb00 TM |
418 | if (!nblocks) |
419 | return 0; | |
420 | ||
9797a902 | 421 | old_nblocks = jbd2_handle_buffer_credits(handle); |
ccd979bd | 422 | |
b4107950 | 423 | trace_ocfs2_extend_trans(old_nblocks, nblocks); |
ccd979bd | 424 | |
e407e397 | 425 | #ifdef CONFIG_OCFS2_DEBUG_FS |
0879c584 MF |
426 | status = 1; |
427 | #else | |
fdc3ef88 | 428 | status = jbd2_journal_extend(handle, nblocks, 0); |
ccd979bd MF |
429 | if (status < 0) { |
430 | mlog_errno(status); | |
431 | goto bail; | |
432 | } | |
0879c584 | 433 | #endif |
ccd979bd MF |
434 | |
435 | if (status > 0) { | |
b4107950 | 436 | trace_ocfs2_extend_trans_restart(old_nblocks + nblocks); |
c901fb00 TM |
437 | status = jbd2_journal_restart(handle, |
438 | old_nblocks + nblocks); | |
ccd979bd | 439 | if (status < 0) { |
ccd979bd MF |
440 | mlog_errno(status); |
441 | goto bail; | |
442 | } | |
01ddf1e1 | 443 | } |
ccd979bd MF |
444 | |
445 | status = 0; | |
446 | bail: | |
ccd979bd MF |
447 | return status; |
448 | } | |
449 | ||
2b1e55c3 YL |
450 | /* |
451 | * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA. | |
452 | * If that fails, restart the transaction & regain write access for the | |
453 | * buffer head which is used for metadata modifications. | |
454 | * Taken from Ext4: extend_or_restart_transaction() | |
455 | */ | |
456 | int ocfs2_allocate_extend_trans(handle_t *handle, int thresh) | |
457 | { | |
458 | int status, old_nblks; | |
459 | ||
460 | BUG_ON(!handle); | |
461 | ||
9797a902 | 462 | old_nblks = jbd2_handle_buffer_credits(handle); |
2b1e55c3 YL |
463 | trace_ocfs2_allocate_extend_trans(old_nblks, thresh); |
464 | ||
465 | if (old_nblks < thresh) | |
466 | return 0; | |
467 | ||
fdc3ef88 | 468 | status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA, 0); |
2b1e55c3 YL |
469 | if (status < 0) { |
470 | mlog_errno(status); | |
471 | goto bail; | |
472 | } | |
473 | ||
474 | if (status > 0) { | |
475 | status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA); | |
476 | if (status < 0) | |
477 | mlog_errno(status); | |
478 | } | |
479 | ||
480 | bail: | |
481 | return status; | |
482 | } | |
483 | ||
484 | ||
50655ae9 JB |
485 | struct ocfs2_triggers { |
486 | struct jbd2_buffer_trigger_type ot_triggers; | |
487 | int ot_offset; | |
488 | }; | |
489 | ||
490 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) | |
491 | { | |
492 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); | |
493 | } | |
494 | ||
13ceef09 | 495 | static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
496 | struct buffer_head *bh, |
497 | void *data, size_t size) | |
498 | { | |
499 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); | |
500 | ||
501 | /* | |
502 | * We aren't guaranteed to have the superblock here, so we | |
503 | * must unconditionally compute the ecc data. | |
504 | * __ocfs2_journal_access() will only set the triggers if | |
505 | * metaecc is enabled. | |
506 | */ | |
507 | ocfs2_block_check_compute(data, size, data + ot->ot_offset); | |
508 | } | |
509 | ||
510 | /* | |
511 | * Quota blocks have their own trigger because the struct ocfs2_block_check | |
512 | * offset depends on the blocksize. | |
513 | */ | |
13ceef09 | 514 | static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
515 | struct buffer_head *bh, |
516 | void *data, size_t size) | |
517 | { | |
518 | struct ocfs2_disk_dqtrailer *dqt = | |
519 | ocfs2_block_dqtrailer(size, data); | |
520 | ||
521 | /* | |
522 | * We aren't guaranteed to have the superblock here, so we | |
523 | * must unconditionally compute the ecc data. | |
524 | * __ocfs2_journal_access() will only set the triggers if | |
525 | * metaecc is enabled. | |
526 | */ | |
527 | ocfs2_block_check_compute(data, size, &dqt->dq_check); | |
528 | } | |
529 | ||
c175a518 JB |
530 | /* |
531 | * Directory blocks also have their own trigger because the | |
532 | * struct ocfs2_block_check offset depends on the blocksize. | |
533 | */ | |
13ceef09 | 534 | static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
c175a518 JB |
535 | struct buffer_head *bh, |
536 | void *data, size_t size) | |
537 | { | |
538 | struct ocfs2_dir_block_trailer *trailer = | |
539 | ocfs2_dir_trailer_from_size(size, data); | |
540 | ||
541 | /* | |
542 | * We aren't guaranteed to have the superblock here, so we | |
543 | * must unconditionally compute the ecc data. | |
544 | * __ocfs2_journal_access() will only set the triggers if | |
545 | * metaecc is enabled. | |
546 | */ | |
547 | ocfs2_block_check_compute(data, size, &trailer->db_check); | |
548 | } | |
549 | ||
50655ae9 JB |
550 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
551 | struct buffer_head *bh) | |
552 | { | |
553 | mlog(ML_ERROR, | |
554 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " | |
555 | "bh->b_blocknr = %llu\n", | |
556 | (unsigned long)bh, | |
557 | (unsigned long long)bh->b_blocknr); | |
558 | ||
74e364ad | 559 | ocfs2_error(bh->b_bdev->bd_super, |
50655ae9 JB |
560 | "JBD2 has aborted our journal, ocfs2 cannot continue\n"); |
561 | } | |
562 | ||
563 | static struct ocfs2_triggers di_triggers = { | |
564 | .ot_triggers = { | |
13ceef09 | 565 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
566 | .t_abort = ocfs2_abort_trigger, |
567 | }, | |
568 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), | |
569 | }; | |
570 | ||
571 | static struct ocfs2_triggers eb_triggers = { | |
572 | .ot_triggers = { | |
13ceef09 | 573 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
574 | .t_abort = ocfs2_abort_trigger, |
575 | }, | |
576 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), | |
577 | }; | |
578 | ||
93c97087 TM |
579 | static struct ocfs2_triggers rb_triggers = { |
580 | .ot_triggers = { | |
13ceef09 | 581 | .t_frozen = ocfs2_frozen_trigger, |
93c97087 TM |
582 | .t_abort = ocfs2_abort_trigger, |
583 | }, | |
584 | .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), | |
585 | }; | |
586 | ||
50655ae9 JB |
587 | static struct ocfs2_triggers gd_triggers = { |
588 | .ot_triggers = { | |
13ceef09 | 589 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
590 | .t_abort = ocfs2_abort_trigger, |
591 | }, | |
592 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), | |
593 | }; | |
594 | ||
c175a518 JB |
595 | static struct ocfs2_triggers db_triggers = { |
596 | .ot_triggers = { | |
13ceef09 | 597 | .t_frozen = ocfs2_db_frozen_trigger, |
c175a518 JB |
598 | .t_abort = ocfs2_abort_trigger, |
599 | }, | |
600 | }; | |
601 | ||
50655ae9 JB |
602 | static struct ocfs2_triggers xb_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_xattr_block, xb_check), | |
608 | }; | |
609 | ||
610 | static struct ocfs2_triggers dq_triggers = { | |
611 | .ot_triggers = { | |
13ceef09 | 612 | .t_frozen = ocfs2_dq_frozen_trigger, |
50655ae9 JB |
613 | .t_abort = ocfs2_abort_trigger, |
614 | }, | |
615 | }; | |
616 | ||
9b7895ef MF |
617 | static struct ocfs2_triggers dr_triggers = { |
618 | .ot_triggers = { | |
13ceef09 | 619 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
620 | .t_abort = ocfs2_abort_trigger, |
621 | }, | |
622 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), | |
623 | }; | |
624 | ||
625 | static struct ocfs2_triggers dl_triggers = { | |
626 | .ot_triggers = { | |
13ceef09 | 627 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
628 | .t_abort = ocfs2_abort_trigger, |
629 | }, | |
630 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), | |
631 | }; | |
632 | ||
50655ae9 | 633 | static int __ocfs2_journal_access(handle_t *handle, |
0cf2f763 | 634 | struct ocfs2_caching_info *ci, |
50655ae9 JB |
635 | struct buffer_head *bh, |
636 | struct ocfs2_triggers *triggers, | |
637 | int type) | |
ccd979bd MF |
638 | { |
639 | int status; | |
0cf2f763 JB |
640 | struct ocfs2_super *osb = |
641 | OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); | |
ccd979bd | 642 | |
0cf2f763 | 643 | BUG_ON(!ci || !ci->ci_ops); |
ccd979bd MF |
644 | BUG_ON(!handle); |
645 | BUG_ON(!bh); | |
ccd979bd | 646 | |
b4107950 TM |
647 | trace_ocfs2_journal_access( |
648 | (unsigned long long)ocfs2_metadata_cache_owner(ci), | |
649 | (unsigned long long)bh->b_blocknr, type, bh->b_size); | |
ccd979bd MF |
650 | |
651 | /* we can safely remove this assertion after testing. */ | |
652 | if (!buffer_uptodate(bh)) { | |
653 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
d984187e | 654 | mlog(ML_ERROR, "b_blocknr=%llu, b_state=0x%lx\n", |
655 | (unsigned long long)bh->b_blocknr, bh->b_state); | |
acf8fdbe JQ |
656 | |
657 | lock_buffer(bh); | |
658 | /* | |
d984187e | 659 | * A previous transaction with a couple of buffer heads fail |
660 | * to checkpoint, so all the bhs are marked as BH_Write_EIO. | |
661 | * For current transaction, the bh is just among those error | |
662 | * bhs which previous transaction handle. We can't just clear | |
663 | * its BH_Write_EIO and reuse directly, since other bhs are | |
664 | * not written to disk yet and that will cause metadata | |
665 | * inconsistency. So we should set fs read-only to avoid | |
666 | * further damage. | |
acf8fdbe JQ |
667 | */ |
668 | if (buffer_write_io_error(bh) && !buffer_uptodate(bh)) { | |
acf8fdbe | 669 | unlock_buffer(bh); |
d984187e | 670 | return ocfs2_error(osb->sb, "A previous attempt to " |
671 | "write this buffer head failed\n"); | |
acf8fdbe JQ |
672 | } |
673 | unlock_buffer(bh); | |
ccd979bd MF |
674 | } |
675 | ||
0cf2f763 | 676 | /* Set the current transaction information on the ci so |
ccd979bd | 677 | * that the locking code knows whether it can drop it's locks |
0cf2f763 | 678 | * on this ci or not. We're protected from the commit |
ccd979bd MF |
679 | * thread updating the current transaction id until |
680 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
681 | * j_trans_barrier for us. */ | |
0cf2f763 | 682 | ocfs2_set_ci_lock_trans(osb->journal, ci); |
ccd979bd | 683 | |
0cf2f763 | 684 | ocfs2_metadata_cache_io_lock(ci); |
ccd979bd MF |
685 | switch (type) { |
686 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
687 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
2b4e30fb | 688 | status = jbd2_journal_get_write_access(handle, bh); |
ccd979bd MF |
689 | break; |
690 | ||
691 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
2b4e30fb | 692 | status = jbd2_journal_get_undo_access(handle, bh); |
ccd979bd MF |
693 | break; |
694 | ||
695 | default: | |
696 | status = -EINVAL; | |
af901ca1 | 697 | mlog(ML_ERROR, "Unknown access type!\n"); |
ccd979bd | 698 | } |
0cf2f763 | 699 | if (!status && ocfs2_meta_ecc(osb) && triggers) |
50655ae9 | 700 | jbd2_journal_set_triggers(bh, &triggers->ot_triggers); |
0cf2f763 | 701 | ocfs2_metadata_cache_io_unlock(ci); |
ccd979bd MF |
702 | |
703 | if (status < 0) | |
704 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
705 | status, type); | |
706 | ||
ccd979bd MF |
707 | return status; |
708 | } | |
709 | ||
0cf2f763 JB |
710 | int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, |
711 | struct buffer_head *bh, int type) | |
50655ae9 | 712 | { |
0cf2f763 | 713 | return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type); |
50655ae9 JB |
714 | } |
715 | ||
0cf2f763 | 716 | int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
717 | struct buffer_head *bh, int type) |
718 | { | |
0cf2f763 | 719 | return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type); |
50655ae9 JB |
720 | } |
721 | ||
93c97087 TM |
722 | int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, |
723 | struct buffer_head *bh, int type) | |
724 | { | |
725 | return __ocfs2_journal_access(handle, ci, bh, &rb_triggers, | |
726 | type); | |
727 | } | |
728 | ||
0cf2f763 | 729 | int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
730 | struct buffer_head *bh, int type) |
731 | { | |
0cf2f763 | 732 | return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type); |
50655ae9 JB |
733 | } |
734 | ||
0cf2f763 | 735 | int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
736 | struct buffer_head *bh, int type) |
737 | { | |
0cf2f763 | 738 | return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type); |
50655ae9 JB |
739 | } |
740 | ||
0cf2f763 | 741 | int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
742 | struct buffer_head *bh, int type) |
743 | { | |
0cf2f763 | 744 | return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type); |
50655ae9 JB |
745 | } |
746 | ||
0cf2f763 | 747 | int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
748 | struct buffer_head *bh, int type) |
749 | { | |
0cf2f763 | 750 | return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type); |
50655ae9 JB |
751 | } |
752 | ||
0cf2f763 | 753 | int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
754 | struct buffer_head *bh, int type) |
755 | { | |
0cf2f763 | 756 | return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type); |
9b7895ef MF |
757 | } |
758 | ||
0cf2f763 | 759 | int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
760 | struct buffer_head *bh, int type) |
761 | { | |
0cf2f763 | 762 | return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type); |
9b7895ef MF |
763 | } |
764 | ||
0cf2f763 | 765 | int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
766 | struct buffer_head *bh, int type) |
767 | { | |
0cf2f763 | 768 | return __ocfs2_journal_access(handle, ci, bh, NULL, type); |
50655ae9 JB |
769 | } |
770 | ||
ec20cec7 | 771 | void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) |
ccd979bd MF |
772 | { |
773 | int status; | |
774 | ||
b4107950 | 775 | trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr); |
ccd979bd | 776 | |
2b4e30fb | 777 | status = jbd2_journal_dirty_metadata(handle, bh); |
e272e7f0 JQ |
778 | if (status) { |
779 | mlog_errno(status); | |
780 | if (!is_handle_aborted(handle)) { | |
781 | journal_t *journal = handle->h_transaction->t_journal; | |
782 | struct super_block *sb = bh->b_bdev->bd_super; | |
783 | ||
784 | mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. " | |
785 | "Aborting transaction and journal.\n"); | |
786 | handle->h_err = status; | |
787 | jbd2_journal_abort_handle(handle); | |
788 | jbd2_journal_abort(journal, status); | |
789 | ocfs2_abort(sb, "Journal already aborted.\n"); | |
790 | } | |
791 | } | |
ccd979bd MF |
792 | } |
793 | ||
2b4e30fb | 794 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
ccd979bd MF |
795 | |
796 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
797 | { | |
798 | journal_t *journal = osb->journal->j_journal; | |
d147b3d6 MF |
799 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
800 | ||
801 | if (osb->osb_commit_interval) | |
802 | commit_interval = osb->osb_commit_interval; | |
ccd979bd | 803 | |
a931da6a | 804 | write_lock(&journal->j_state_lock); |
d147b3d6 | 805 | journal->j_commit_interval = commit_interval; |
ccd979bd | 806 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
2b4e30fb | 807 | journal->j_flags |= JBD2_BARRIER; |
ccd979bd | 808 | else |
2b4e30fb | 809 | journal->j_flags &= ~JBD2_BARRIER; |
a931da6a | 810 | write_unlock(&journal->j_state_lock); |
ccd979bd MF |
811 | } |
812 | ||
813 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
814 | { | |
815 | int status = -1; | |
816 | struct inode *inode = NULL; /* the journal inode */ | |
817 | journal_t *j_journal = NULL; | |
818 | struct ocfs2_dinode *di = NULL; | |
819 | struct buffer_head *bh = NULL; | |
820 | struct ocfs2_super *osb; | |
e63aecb6 | 821 | int inode_lock = 0; |
ccd979bd | 822 | |
ccd979bd MF |
823 | BUG_ON(!journal); |
824 | ||
825 | osb = journal->j_osb; | |
826 | ||
827 | /* already have the inode for our journal */ | |
828 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
829 | osb->slot_num); | |
830 | if (inode == NULL) { | |
831 | status = -EACCES; | |
832 | mlog_errno(status); | |
833 | goto done; | |
834 | } | |
835 | if (is_bad_inode(inode)) { | |
836 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
837 | iput(inode); | |
838 | inode = NULL; | |
839 | status = -EACCES; | |
840 | goto done; | |
841 | } | |
842 | ||
843 | SET_INODE_JOURNAL(inode); | |
844 | OCFS2_I(inode)->ip_open_count++; | |
845 | ||
6eff5790 MF |
846 | /* Skip recovery waits here - journal inode metadata never |
847 | * changes in a live cluster so it can be considered an | |
848 | * exception to the rule. */ | |
e63aecb6 | 849 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd MF |
850 | if (status < 0) { |
851 | if (status != -ERESTARTSYS) | |
852 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
853 | goto done; | |
854 | } | |
855 | ||
e63aecb6 | 856 | inode_lock = 1; |
ccd979bd MF |
857 | di = (struct ocfs2_dinode *)bh->b_data; |
858 | ||
f17c20dd | 859 | if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) { |
ccd979bd | 860 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", |
f17c20dd | 861 | i_size_read(inode)); |
ccd979bd MF |
862 | status = -EINVAL; |
863 | goto done; | |
864 | } | |
865 | ||
f17c20dd | 866 | trace_ocfs2_journal_init(i_size_read(inode), |
b4107950 TM |
867 | (unsigned long long)inode->i_blocks, |
868 | OCFS2_I(inode)->ip_clusters); | |
ccd979bd MF |
869 | |
870 | /* call the kernels journal init function now */ | |
2b4e30fb | 871 | j_journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
872 | if (j_journal == NULL) { |
873 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
874 | status = -EINVAL; | |
875 | goto done; | |
876 | } | |
877 | ||
ede7dc7f | 878 | trace_ocfs2_journal_init_maxlen(j_journal->j_total_len); |
ccd979bd MF |
879 | |
880 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
881 | OCFS2_JOURNAL_DIRTY_FL); | |
882 | ||
883 | journal->j_journal = j_journal; | |
342af94e MFO |
884 | journal->j_journal->j_submit_inode_data_buffers = |
885 | jbd2_journal_submit_inode_data_buffers; | |
886 | journal->j_journal->j_finish_inode_data_buffers = | |
887 | jbd2_journal_finish_inode_data_buffers; | |
ccd979bd MF |
888 | journal->j_inode = inode; |
889 | journal->j_bh = bh; | |
890 | ||
891 | ocfs2_set_journal_params(osb); | |
892 | ||
893 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
894 | ||
895 | status = 0; | |
896 | done: | |
897 | if (status < 0) { | |
e63aecb6 MF |
898 | if (inode_lock) |
899 | ocfs2_inode_unlock(inode, 1); | |
a81cb88b | 900 | brelse(bh); |
ccd979bd MF |
901 | if (inode) { |
902 | OCFS2_I(inode)->ip_open_count--; | |
903 | iput(inode); | |
904 | } | |
905 | } | |
906 | ||
ccd979bd MF |
907 | return status; |
908 | } | |
909 | ||
539d8264 SM |
910 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
911 | { | |
912 | le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); | |
913 | } | |
914 | ||
915 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) | |
916 | { | |
917 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); | |
918 | } | |
919 | ||
ccd979bd | 920 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 921 | int dirty, int replayed) |
ccd979bd MF |
922 | { |
923 | int status; | |
924 | unsigned int flags; | |
925 | struct ocfs2_journal *journal = osb->journal; | |
926 | struct buffer_head *bh = journal->j_bh; | |
927 | struct ocfs2_dinode *fe; | |
928 | ||
ccd979bd | 929 | fe = (struct ocfs2_dinode *)bh->b_data; |
10995aa2 JB |
930 | |
931 | /* The journal bh on the osb always comes from ocfs2_journal_init() | |
932 | * and was validated there inside ocfs2_inode_lock_full(). It's a | |
933 | * code bug if we mess it up. */ | |
934 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
ccd979bd MF |
935 | |
936 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
937 | if (dirty) | |
938 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
939 | else | |
940 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
941 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
942 | ||
539d8264 SM |
943 | if (replayed) |
944 | ocfs2_bump_recovery_generation(fe); | |
945 | ||
13723d00 | 946 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 947 | status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); |
ccd979bd MF |
948 | if (status < 0) |
949 | mlog_errno(status); | |
950 | ||
ccd979bd MF |
951 | return status; |
952 | } | |
953 | ||
954 | /* | |
955 | * If the journal has been kmalloc'd it needs to be freed after this | |
956 | * call. | |
957 | */ | |
958 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
959 | { | |
960 | struct ocfs2_journal *journal = NULL; | |
961 | int status = 0; | |
962 | struct inode *inode = NULL; | |
963 | int num_running_trans = 0; | |
964 | ||
ebdec83b | 965 | BUG_ON(!osb); |
ccd979bd MF |
966 | |
967 | journal = osb->journal; | |
968 | if (!journal) | |
969 | goto done; | |
970 | ||
971 | inode = journal->j_inode; | |
972 | ||
973 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
974 | goto done; | |
975 | ||
2b4e30fb | 976 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
ccd979bd MF |
977 | if (!igrab(inode)) |
978 | BUG(); | |
979 | ||
980 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
b4107950 | 981 | trace_ocfs2_journal_shutdown(num_running_trans); |
ccd979bd MF |
982 | |
983 | /* Do a commit_cache here. It will flush our journal, *and* | |
984 | * release any locks that are still held. | |
985 | * set the SHUTDOWN flag and release the trans lock. | |
986 | * the commit thread will take the trans lock for us below. */ | |
987 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
988 | ||
989 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
990 | * drop the trans_lock (which we want to hold until we | |
991 | * completely destroy the journal. */ | |
992 | if (osb->commit_task) { | |
993 | /* Wait for the commit thread */ | |
b4107950 | 994 | trace_ocfs2_journal_shutdown_wait(osb->commit_task); |
ccd979bd MF |
995 | kthread_stop(osb->commit_task); |
996 | osb->commit_task = NULL; | |
997 | } | |
998 | ||
999 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
1000 | ||
c271c5c2 | 1001 | if (ocfs2_mount_local(osb)) { |
2b4e30fb JB |
1002 | jbd2_journal_lock_updates(journal->j_journal); |
1003 | status = jbd2_journal_flush(journal->j_journal); | |
1004 | jbd2_journal_unlock_updates(journal->j_journal); | |
c271c5c2 SM |
1005 | if (status < 0) |
1006 | mlog_errno(status); | |
1007 | } | |
1008 | ||
d85400af JB |
1009 | /* Shutdown the kernel journal system */ |
1010 | if (!jbd2_journal_destroy(journal->j_journal) && !status) { | |
c271c5c2 SM |
1011 | /* |
1012 | * Do not toggle if flush was unsuccessful otherwise | |
1013 | * will leave dirty metadata in a "clean" journal | |
1014 | */ | |
539d8264 | 1015 | status = ocfs2_journal_toggle_dirty(osb, 0, 0); |
c271c5c2 SM |
1016 | if (status < 0) |
1017 | mlog_errno(status); | |
1018 | } | |
ae0dff68 | 1019 | journal->j_journal = NULL; |
ccd979bd MF |
1020 | |
1021 | OCFS2_I(inode)->ip_open_count--; | |
1022 | ||
1023 | /* unlock our journal */ | |
e63aecb6 | 1024 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1025 | |
1026 | brelse(journal->j_bh); | |
1027 | journal->j_bh = NULL; | |
1028 | ||
1029 | journal->j_state = OCFS2_JOURNAL_FREE; | |
1030 | ||
1031 | // up_write(&journal->j_trans_barrier); | |
1032 | done: | |
72865d92 | 1033 | iput(inode); |
ccd979bd MF |
1034 | } |
1035 | ||
1036 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
1037 | journal_t *journal, | |
1038 | int slot) | |
1039 | { | |
1040 | int olderr; | |
1041 | ||
2b4e30fb | 1042 | olderr = jbd2_journal_errno(journal); |
ccd979bd MF |
1043 | if (olderr) { |
1044 | mlog(ML_ERROR, "File system error %d recorded in " | |
1045 | "journal %u.\n", olderr, slot); | |
1046 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
1047 | sb->s_id); | |
1048 | ||
2b4e30fb JB |
1049 | jbd2_journal_ack_err(journal); |
1050 | jbd2_journal_clear_err(journal); | |
ccd979bd MF |
1051 | } |
1052 | } | |
1053 | ||
539d8264 | 1054 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
ccd979bd MF |
1055 | { |
1056 | int status = 0; | |
1057 | struct ocfs2_super *osb; | |
1058 | ||
b1f3550f | 1059 | BUG_ON(!journal); |
ccd979bd MF |
1060 | |
1061 | osb = journal->j_osb; | |
1062 | ||
2b4e30fb | 1063 | status = jbd2_journal_load(journal->j_journal); |
ccd979bd MF |
1064 | if (status < 0) { |
1065 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
1066 | goto done; | |
1067 | } | |
1068 | ||
1069 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
1070 | ||
397eac17 KL |
1071 | if (replayed) { |
1072 | jbd2_journal_lock_updates(journal->j_journal); | |
1073 | status = jbd2_journal_flush(journal->j_journal); | |
1074 | jbd2_journal_unlock_updates(journal->j_journal); | |
1075 | if (status < 0) | |
1076 | mlog_errno(status); | |
1077 | } | |
1078 | ||
539d8264 | 1079 | status = ocfs2_journal_toggle_dirty(osb, 1, replayed); |
ccd979bd MF |
1080 | if (status < 0) { |
1081 | mlog_errno(status); | |
1082 | goto done; | |
1083 | } | |
1084 | ||
1085 | /* Launch the commit thread */ | |
c271c5c2 SM |
1086 | if (!local) { |
1087 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, | |
5afc44e2 | 1088 | "ocfs2cmt-%s", osb->uuid_str); |
c271c5c2 SM |
1089 | if (IS_ERR(osb->commit_task)) { |
1090 | status = PTR_ERR(osb->commit_task); | |
1091 | osb->commit_task = NULL; | |
1092 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " | |
1093 | "error=%d", status); | |
1094 | goto done; | |
1095 | } | |
1096 | } else | |
ccd979bd | 1097 | osb->commit_task = NULL; |
ccd979bd MF |
1098 | |
1099 | done: | |
ccd979bd MF |
1100 | return status; |
1101 | } | |
1102 | ||
1103 | ||
1104 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
1105 | * mark the journal clean */ | |
1106 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
1107 | { | |
1108 | int status; | |
1109 | ||
ebdec83b | 1110 | BUG_ON(!journal); |
ccd979bd | 1111 | |
2b4e30fb | 1112 | status = jbd2_journal_wipe(journal->j_journal, full); |
ccd979bd MF |
1113 | if (status < 0) { |
1114 | mlog_errno(status); | |
1115 | goto bail; | |
1116 | } | |
1117 | ||
539d8264 | 1118 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); |
ccd979bd MF |
1119 | if (status < 0) |
1120 | mlog_errno(status); | |
1121 | ||
1122 | bail: | |
ccd979bd MF |
1123 | return status; |
1124 | } | |
1125 | ||
553abd04 JB |
1126 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1127 | { | |
1128 | int empty; | |
1129 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
1130 | ||
1131 | spin_lock(&osb->osb_lock); | |
1132 | empty = (rm->rm_used == 0); | |
1133 | spin_unlock(&osb->osb_lock); | |
1134 | ||
1135 | return empty; | |
1136 | } | |
1137 | ||
1138 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) | |
1139 | { | |
1140 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); | |
1141 | } | |
1142 | ||
ccd979bd MF |
1143 | /* |
1144 | * JBD Might read a cached version of another nodes journal file. We | |
1145 | * don't want this as this file changes often and we get no | |
1146 | * notification on those changes. The only way to be sure that we've | |
1147 | * got the most up to date version of those blocks then is to force | |
1148 | * read them off disk. Just searching through the buffer cache won't | |
1149 | * work as there may be pages backing this file which are still marked | |
1150 | * up to date. We know things can't change on this file underneath us | |
1151 | * as we have the lock by now :) | |
1152 | */ | |
1153 | static int ocfs2_force_read_journal(struct inode *inode) | |
1154 | { | |
1155 | int status = 0; | |
4f902c37 | 1156 | int i; |
8110b073 | 1157 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
0b492f68 JB |
1158 | struct buffer_head *bh = NULL; |
1159 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
ccd979bd | 1160 | |
f17c20dd | 1161 | num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode)); |
ccd979bd | 1162 | v_blkno = 0; |
8110b073 | 1163 | while (v_blkno < num_blocks) { |
ccd979bd | 1164 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
49cb8d2d | 1165 | &p_blkno, &p_blocks, NULL); |
ccd979bd MF |
1166 | if (status < 0) { |
1167 | mlog_errno(status); | |
1168 | goto bail; | |
1169 | } | |
1170 | ||
0b492f68 JB |
1171 | for (i = 0; i < p_blocks; i++, p_blkno++) { |
1172 | bh = __find_get_block(osb->sb->s_bdev, p_blkno, | |
1173 | osb->sb->s_blocksize); | |
1174 | /* block not cached. */ | |
1175 | if (!bh) | |
1176 | continue; | |
1177 | ||
1178 | brelse(bh); | |
1179 | bh = NULL; | |
1180 | /* We are reading journal data which should not | |
1181 | * be put in the uptodate cache. | |
1182 | */ | |
1183 | status = ocfs2_read_blocks_sync(osb, p_blkno, 1, &bh); | |
1184 | if (status < 0) { | |
1185 | mlog_errno(status); | |
1186 | goto bail; | |
1187 | } | |
1188 | ||
1189 | brelse(bh); | |
1190 | bh = NULL; | |
ccd979bd MF |
1191 | } |
1192 | ||
1193 | v_blkno += p_blocks; | |
1194 | } | |
1195 | ||
1196 | bail: | |
ccd979bd MF |
1197 | return status; |
1198 | } | |
1199 | ||
1200 | struct ocfs2_la_recovery_item { | |
1201 | struct list_head lri_list; | |
1202 | int lri_slot; | |
1203 | struct ocfs2_dinode *lri_la_dinode; | |
1204 | struct ocfs2_dinode *lri_tl_dinode; | |
2205363d | 1205 | struct ocfs2_quota_recovery *lri_qrec; |
ed460cff | 1206 | enum ocfs2_orphan_reco_type lri_orphan_reco_type; |
ccd979bd MF |
1207 | }; |
1208 | ||
1209 | /* Does the second half of the recovery process. By this point, the | |
1210 | * node is marked clean and can actually be considered recovered, | |
1211 | * hence it's no longer in the recovery map, but there's still some | |
1212 | * cleanup we can do which shouldn't happen within the recovery thread | |
1213 | * as locking in that context becomes very difficult if we are to take | |
1214 | * recovering nodes into account. | |
1215 | * | |
1216 | * NOTE: This function can and will sleep on recovery of other nodes | |
1217 | * during cluster locking, just like any other ocfs2 process. | |
1218 | */ | |
c4028958 | 1219 | void ocfs2_complete_recovery(struct work_struct *work) |
ccd979bd | 1220 | { |
b4107950 | 1221 | int ret = 0; |
c4028958 DH |
1222 | struct ocfs2_journal *journal = |
1223 | container_of(work, struct ocfs2_journal, j_recovery_work); | |
1224 | struct ocfs2_super *osb = journal->j_osb; | |
ccd979bd | 1225 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
800deef3 | 1226 | struct ocfs2_la_recovery_item *item, *n; |
2205363d | 1227 | struct ocfs2_quota_recovery *qrec; |
ed460cff | 1228 | enum ocfs2_orphan_reco_type orphan_reco_type; |
ccd979bd MF |
1229 | LIST_HEAD(tmp_la_list); |
1230 | ||
b4107950 TM |
1231 | trace_ocfs2_complete_recovery( |
1232 | (unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno); | |
ccd979bd MF |
1233 | |
1234 | spin_lock(&journal->j_lock); | |
1235 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
1236 | spin_unlock(&journal->j_lock); | |
1237 | ||
800deef3 | 1238 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
ccd979bd MF |
1239 | list_del_init(&item->lri_list); |
1240 | ||
19ece546 JK |
1241 | ocfs2_wait_on_quotas(osb); |
1242 | ||
ccd979bd | 1243 | la_dinode = item->lri_la_dinode; |
b4107950 TM |
1244 | tl_dinode = item->lri_tl_dinode; |
1245 | qrec = item->lri_qrec; | |
ed460cff | 1246 | orphan_reco_type = item->lri_orphan_reco_type; |
ccd979bd | 1247 | |
b4107950 TM |
1248 | trace_ocfs2_complete_recovery_slot(item->lri_slot, |
1249 | la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0, | |
1250 | tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0, | |
1251 | qrec); | |
1252 | ||
1253 | if (la_dinode) { | |
ccd979bd MF |
1254 | ret = ocfs2_complete_local_alloc_recovery(osb, |
1255 | la_dinode); | |
1256 | if (ret < 0) | |
1257 | mlog_errno(ret); | |
1258 | ||
1259 | kfree(la_dinode); | |
1260 | } | |
1261 | ||
ccd979bd | 1262 | if (tl_dinode) { |
ccd979bd MF |
1263 | ret = ocfs2_complete_truncate_log_recovery(osb, |
1264 | tl_dinode); | |
1265 | if (ret < 0) | |
1266 | mlog_errno(ret); | |
1267 | ||
1268 | kfree(tl_dinode); | |
1269 | } | |
1270 | ||
ed460cff JQ |
1271 | ret = ocfs2_recover_orphans(osb, item->lri_slot, |
1272 | orphan_reco_type); | |
ccd979bd MF |
1273 | if (ret < 0) |
1274 | mlog_errno(ret); | |
1275 | ||
2205363d | 1276 | if (qrec) { |
2205363d JK |
1277 | ret = ocfs2_finish_quota_recovery(osb, qrec, |
1278 | item->lri_slot); | |
1279 | if (ret < 0) | |
1280 | mlog_errno(ret); | |
1281 | /* Recovery info is already freed now */ | |
1282 | } | |
1283 | ||
ccd979bd MF |
1284 | kfree(item); |
1285 | } | |
1286 | ||
b4107950 | 1287 | trace_ocfs2_complete_recovery_end(ret); |
ccd979bd MF |
1288 | } |
1289 | ||
1290 | /* NOTE: This function always eats your references to la_dinode and | |
1291 | * tl_dinode, either manually on error, or by passing them to | |
1292 | * ocfs2_complete_recovery */ | |
1293 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
1294 | int slot_num, | |
1295 | struct ocfs2_dinode *la_dinode, | |
2205363d | 1296 | struct ocfs2_dinode *tl_dinode, |
ed460cff JQ |
1297 | struct ocfs2_quota_recovery *qrec, |
1298 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
ccd979bd MF |
1299 | { |
1300 | struct ocfs2_la_recovery_item *item; | |
1301 | ||
afae00ab | 1302 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
1303 | if (!item) { |
1304 | /* Though we wish to avoid it, we are in fact safe in | |
1305 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
1306 | * than capable of reclaiming unused space. */ | |
d787ab09 TG |
1307 | kfree(la_dinode); |
1308 | kfree(tl_dinode); | |
ccd979bd | 1309 | |
2205363d JK |
1310 | if (qrec) |
1311 | ocfs2_free_quota_recovery(qrec); | |
1312 | ||
ccd979bd MF |
1313 | mlog_errno(-ENOMEM); |
1314 | return; | |
1315 | } | |
1316 | ||
1317 | INIT_LIST_HEAD(&item->lri_list); | |
1318 | item->lri_la_dinode = la_dinode; | |
1319 | item->lri_slot = slot_num; | |
1320 | item->lri_tl_dinode = tl_dinode; | |
2205363d | 1321 | item->lri_qrec = qrec; |
ed460cff | 1322 | item->lri_orphan_reco_type = orphan_reco_type; |
ccd979bd MF |
1323 | |
1324 | spin_lock(&journal->j_lock); | |
1325 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
35ddf78e | 1326 | queue_work(journal->j_osb->ocfs2_wq, &journal->j_recovery_work); |
ccd979bd MF |
1327 | spin_unlock(&journal->j_lock); |
1328 | } | |
1329 | ||
1330 | /* Called by the mount code to queue recovery the last part of | |
9140db04 | 1331 | * recovery for it's own and offline slot(s). */ |
ccd979bd MF |
1332 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1333 | { | |
1334 | struct ocfs2_journal *journal = osb->journal; | |
1335 | ||
10b3dd76 SM |
1336 | if (ocfs2_is_hard_readonly(osb)) |
1337 | return; | |
1338 | ||
9140db04 SE |
1339 | /* No need to queue up our truncate_log as regular cleanup will catch |
1340 | * that */ | |
1341 | ocfs2_queue_recovery_completion(journal, osb->slot_num, | |
ed460cff JQ |
1342 | osb->local_alloc_copy, NULL, NULL, |
1343 | ORPHAN_NEED_TRUNCATE); | |
9140db04 | 1344 | ocfs2_schedule_truncate_log_flush(osb, 0); |
ccd979bd | 1345 | |
9140db04 | 1346 | osb->local_alloc_copy = NULL; |
9140db04 SE |
1347 | |
1348 | /* queue to recover orphan slots for all offline slots */ | |
1349 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
ed460cff | 1350 | ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); |
9140db04 | 1351 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1352 | } |
1353 | ||
2205363d JK |
1354 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1355 | { | |
1356 | if (osb->quota_rec) { | |
1357 | ocfs2_queue_recovery_completion(osb->journal, | |
1358 | osb->slot_num, | |
1359 | NULL, | |
1360 | NULL, | |
ed460cff JQ |
1361 | osb->quota_rec, |
1362 | ORPHAN_NEED_TRUNCATE); | |
2205363d JK |
1363 | osb->quota_rec = NULL; |
1364 | } | |
1365 | } | |
1366 | ||
ccd979bd MF |
1367 | static int __ocfs2_recovery_thread(void *arg) |
1368 | { | |
2205363d | 1369 | int status, node_num, slot_num; |
ccd979bd | 1370 | struct ocfs2_super *osb = arg; |
553abd04 | 1371 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
2205363d JK |
1372 | int *rm_quota = NULL; |
1373 | int rm_quota_used = 0, i; | |
1374 | struct ocfs2_quota_recovery *qrec; | |
ccd979bd | 1375 | |
21158ca8 G |
1376 | /* Whether the quota supported. */ |
1377 | int quota_enabled = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, | |
1378 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
1379 | || OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, | |
1380 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA); | |
1381 | ||
ccd979bd MF |
1382 | status = ocfs2_wait_on_mount(osb); |
1383 | if (status < 0) { | |
1384 | goto bail; | |
1385 | } | |
1386 | ||
21158ca8 G |
1387 | if (quota_enabled) { |
1388 | rm_quota = kcalloc(osb->max_slots, sizeof(int), GFP_NOFS); | |
1389 | if (!rm_quota) { | |
1390 | status = -ENOMEM; | |
1391 | goto bail; | |
1392 | } | |
2205363d | 1393 | } |
ccd979bd MF |
1394 | restart: |
1395 | status = ocfs2_super_lock(osb, 1); | |
1396 | if (status < 0) { | |
1397 | mlog_errno(status); | |
1398 | goto bail; | |
1399 | } | |
1400 | ||
9140db04 SE |
1401 | status = ocfs2_compute_replay_slots(osb); |
1402 | if (status < 0) | |
1403 | mlog_errno(status); | |
1404 | ||
1405 | /* queue recovery for our own slot */ | |
1406 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
ed460cff | 1407 | NULL, NULL, ORPHAN_NO_NEED_TRUNCATE); |
9140db04 | 1408 | |
553abd04 JB |
1409 | spin_lock(&osb->osb_lock); |
1410 | while (rm->rm_used) { | |
1411 | /* It's always safe to remove entry zero, as we won't | |
1412 | * clear it until ocfs2_recover_node() has succeeded. */ | |
1413 | node_num = rm->rm_entries[0]; | |
1414 | spin_unlock(&osb->osb_lock); | |
2205363d | 1415 | slot_num = ocfs2_node_num_to_slot(osb, node_num); |
b4107950 | 1416 | trace_ocfs2_recovery_thread_node(node_num, slot_num); |
2205363d JK |
1417 | if (slot_num == -ENOENT) { |
1418 | status = 0; | |
2205363d JK |
1419 | goto skip_recovery; |
1420 | } | |
2205363d JK |
1421 | |
1422 | /* It is a bit subtle with quota recovery. We cannot do it | |
1423 | * immediately because we have to obtain cluster locks from | |
1424 | * quota files and we also don't want to just skip it because | |
1425 | * then quota usage would be out of sync until some node takes | |
1426 | * the slot. So we remember which nodes need quota recovery | |
1427 | * and when everything else is done, we recover quotas. */ | |
21158ca8 G |
1428 | if (quota_enabled) { |
1429 | for (i = 0; i < rm_quota_used | |
1430 | && rm_quota[i] != slot_num; i++) | |
1431 | ; | |
1432 | ||
1433 | if (i == rm_quota_used) | |
1434 | rm_quota[rm_quota_used++] = slot_num; | |
1435 | } | |
2205363d JK |
1436 | |
1437 | status = ocfs2_recover_node(osb, node_num, slot_num); | |
1438 | skip_recovery: | |
553abd04 JB |
1439 | if (!status) { |
1440 | ocfs2_recovery_map_clear(osb, node_num); | |
1441 | } else { | |
ccd979bd MF |
1442 | mlog(ML_ERROR, |
1443 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1444 | status, node_num, | |
1445 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1446 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
ccd979bd MF |
1447 | } |
1448 | ||
553abd04 | 1449 | spin_lock(&osb->osb_lock); |
ccd979bd | 1450 | } |
553abd04 | 1451 | spin_unlock(&osb->osb_lock); |
b4107950 | 1452 | trace_ocfs2_recovery_thread_end(status); |
553abd04 | 1453 | |
539d8264 SM |
1454 | /* Refresh all journal recovery generations from disk */ |
1455 | status = ocfs2_check_journals_nolocks(osb); | |
1456 | status = (status == -EROFS) ? 0 : status; | |
1457 | if (status < 0) | |
1458 | mlog_errno(status); | |
1459 | ||
2205363d | 1460 | /* Now it is right time to recover quotas... We have to do this under |
25985edc | 1461 | * superblock lock so that no one can start using the slot (and crash) |
2205363d | 1462 | * before we recover it */ |
21158ca8 G |
1463 | if (quota_enabled) { |
1464 | for (i = 0; i < rm_quota_used; i++) { | |
1465 | qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); | |
1466 | if (IS_ERR(qrec)) { | |
1467 | status = PTR_ERR(qrec); | |
1468 | mlog_errno(status); | |
1469 | continue; | |
1470 | } | |
1471 | ocfs2_queue_recovery_completion(osb->journal, | |
1472 | rm_quota[i], | |
1473 | NULL, NULL, qrec, | |
1474 | ORPHAN_NEED_TRUNCATE); | |
2205363d | 1475 | } |
2205363d JK |
1476 | } |
1477 | ||
ccd979bd MF |
1478 | ocfs2_super_unlock(osb, 1); |
1479 | ||
9140db04 | 1480 | /* queue recovery for offline slots */ |
ed460cff | 1481 | ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); |
ccd979bd MF |
1482 | |
1483 | bail: | |
c74ec2f7 | 1484 | mutex_lock(&osb->recovery_lock); |
553abd04 | 1485 | if (!status && !ocfs2_recovery_completed(osb)) { |
c74ec2f7 | 1486 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1487 | goto restart; |
1488 | } | |
1489 | ||
9140db04 | 1490 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1491 | osb->recovery_thread_task = NULL; |
1492 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1493 | wake_up(&osb->recovery_event); | |
1494 | ||
c74ec2f7 | 1495 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1496 | |
21158ca8 G |
1497 | if (quota_enabled) |
1498 | kfree(rm_quota); | |
2205363d | 1499 | |
ccd979bd MF |
1500 | /* no one is callint kthread_stop() for us so the kthread() api |
1501 | * requires that we call do_exit(). And it isn't exported, but | |
1502 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1503 | complete_and_exit(NULL, status); | |
ccd979bd MF |
1504 | } |
1505 | ||
1506 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1507 | { | |
c74ec2f7 | 1508 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1509 | |
b4107950 TM |
1510 | trace_ocfs2_recovery_thread(node_num, osb->node_num, |
1511 | osb->disable_recovery, osb->recovery_thread_task, | |
1512 | osb->disable_recovery ? | |
1513 | -1 : ocfs2_recovery_map_set(osb, node_num)); | |
ccd979bd | 1514 | |
b4107950 TM |
1515 | if (osb->disable_recovery) |
1516 | goto out; | |
ccd979bd MF |
1517 | |
1518 | if (osb->recovery_thread_task) | |
1519 | goto out; | |
1520 | ||
1521 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
5afc44e2 | 1522 | "ocfs2rec-%s", osb->uuid_str); |
ccd979bd MF |
1523 | if (IS_ERR(osb->recovery_thread_task)) { |
1524 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1525 | osb->recovery_thread_task = NULL; | |
1526 | } | |
1527 | ||
1528 | out: | |
c74ec2f7 | 1529 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1530 | wake_up(&osb->recovery_event); |
ccd979bd MF |
1531 | } |
1532 | ||
539d8264 SM |
1533 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1534 | int slot_num, | |
1535 | struct buffer_head **bh, | |
1536 | struct inode **ret_inode) | |
1537 | { | |
1538 | int status = -EACCES; | |
1539 | struct inode *inode = NULL; | |
1540 | ||
1541 | BUG_ON(slot_num >= osb->max_slots); | |
1542 | ||
1543 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1544 | slot_num); | |
1545 | if (!inode || is_bad_inode(inode)) { | |
1546 | mlog_errno(status); | |
1547 | goto bail; | |
1548 | } | |
1549 | SET_INODE_JOURNAL(inode); | |
1550 | ||
b657c95c | 1551 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
539d8264 SM |
1552 | if (status < 0) { |
1553 | mlog_errno(status); | |
1554 | goto bail; | |
1555 | } | |
1556 | ||
1557 | status = 0; | |
1558 | ||
1559 | bail: | |
1560 | if (inode) { | |
1561 | if (status || !ret_inode) | |
1562 | iput(inode); | |
1563 | else | |
1564 | *ret_inode = inode; | |
1565 | } | |
1566 | return status; | |
1567 | } | |
1568 | ||
ccd979bd MF |
1569 | /* Does the actual journal replay and marks the journal inode as |
1570 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1571 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1572 | int node_num, | |
1573 | int slot_num) | |
1574 | { | |
1575 | int status; | |
1576 | int got_lock = 0; | |
1577 | unsigned int flags; | |
1578 | struct inode *inode = NULL; | |
1579 | struct ocfs2_dinode *fe; | |
1580 | journal_t *journal = NULL; | |
1581 | struct buffer_head *bh = NULL; | |
539d8264 | 1582 | u32 slot_reco_gen; |
ccd979bd | 1583 | |
539d8264 SM |
1584 | status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); |
1585 | if (status) { | |
ccd979bd MF |
1586 | mlog_errno(status); |
1587 | goto done; | |
1588 | } | |
539d8264 SM |
1589 | |
1590 | fe = (struct ocfs2_dinode *)bh->b_data; | |
1591 | slot_reco_gen = ocfs2_get_recovery_generation(fe); | |
1592 | brelse(bh); | |
1593 | bh = NULL; | |
1594 | ||
1595 | /* | |
1596 | * As the fs recovery is asynchronous, there is a small chance that | |
1597 | * another node mounted (and recovered) the slot before the recovery | |
1598 | * thread could get the lock. To handle that, we dirty read the journal | |
1599 | * inode for that slot to get the recovery generation. If it is | |
1600 | * different than what we expected, the slot has been recovered. | |
1601 | * If not, it needs recovery. | |
1602 | */ | |
1603 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { | |
b4107950 | 1604 | trace_ocfs2_replay_journal_recovered(slot_num, |
539d8264 SM |
1605 | osb->slot_recovery_generations[slot_num], slot_reco_gen); |
1606 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
1607 | status = -EBUSY; | |
ccd979bd MF |
1608 | goto done; |
1609 | } | |
539d8264 SM |
1610 | |
1611 | /* Continue with recovery as the journal has not yet been recovered */ | |
ccd979bd | 1612 | |
e63aecb6 | 1613 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd | 1614 | if (status < 0) { |
b4107950 | 1615 | trace_ocfs2_replay_journal_lock_err(status); |
ccd979bd MF |
1616 | if (status != -ERESTARTSYS) |
1617 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1618 | goto done; | |
1619 | } | |
1620 | got_lock = 1; | |
1621 | ||
1622 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1623 | ||
1624 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
539d8264 | 1625 | slot_reco_gen = ocfs2_get_recovery_generation(fe); |
ccd979bd MF |
1626 | |
1627 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
b4107950 | 1628 | trace_ocfs2_replay_journal_skip(node_num); |
539d8264 SM |
1629 | /* Refresh recovery generation for the slot */ |
1630 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
ccd979bd MF |
1631 | goto done; |
1632 | } | |
1633 | ||
9140db04 SE |
1634 | /* we need to run complete recovery for offline orphan slots */ |
1635 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1636 | ||
619c200d SM |
1637 | printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\ |
1638 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1639 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1640 | |
1641 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1642 | ||
1643 | status = ocfs2_force_read_journal(inode); | |
1644 | if (status < 0) { | |
1645 | mlog_errno(status); | |
1646 | goto done; | |
1647 | } | |
1648 | ||
2b4e30fb | 1649 | journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
1650 | if (journal == NULL) { |
1651 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1652 | status = -EIO; | |
1653 | goto done; | |
1654 | } | |
1655 | ||
2b4e30fb | 1656 | status = jbd2_journal_load(journal); |
ccd979bd MF |
1657 | if (status < 0) { |
1658 | mlog_errno(status); | |
1659 | if (!igrab(inode)) | |
1660 | BUG(); | |
2b4e30fb | 1661 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1662 | goto done; |
1663 | } | |
1664 | ||
1665 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1666 | ||
1667 | /* wipe the journal */ | |
2b4e30fb JB |
1668 | jbd2_journal_lock_updates(journal); |
1669 | status = jbd2_journal_flush(journal); | |
1670 | jbd2_journal_unlock_updates(journal); | |
ccd979bd MF |
1671 | if (status < 0) |
1672 | mlog_errno(status); | |
1673 | ||
1674 | /* This will mark the node clean */ | |
1675 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1676 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1677 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1678 | ||
539d8264 SM |
1679 | /* Increment recovery generation to indicate successful recovery */ |
1680 | ocfs2_bump_recovery_generation(fe); | |
1681 | osb->slot_recovery_generations[slot_num] = | |
1682 | ocfs2_get_recovery_generation(fe); | |
1683 | ||
13723d00 | 1684 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 1685 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); |
ccd979bd MF |
1686 | if (status < 0) |
1687 | mlog_errno(status); | |
1688 | ||
1689 | if (!igrab(inode)) | |
1690 | BUG(); | |
1691 | ||
2b4e30fb | 1692 | jbd2_journal_destroy(journal); |
ccd979bd | 1693 | |
619c200d SM |
1694 | printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\ |
1695 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1696 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1697 | done: |
1698 | /* drop the lock on this nodes journal */ | |
1699 | if (got_lock) | |
e63aecb6 | 1700 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1701 | |
72865d92 | 1702 | iput(inode); |
a81cb88b | 1703 | brelse(bh); |
ccd979bd | 1704 | |
ccd979bd MF |
1705 | return status; |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * Do the most important parts of node recovery: | |
1710 | * - Replay it's journal | |
1711 | * - Stamp a clean local allocator file | |
1712 | * - Stamp a clean truncate log | |
1713 | * - Mark the node clean | |
1714 | * | |
1715 | * If this function completes without error, a node in OCFS2 can be | |
1716 | * said to have been safely recovered. As a result, failure during the | |
1717 | * second part of a nodes recovery process (local alloc recovery) is | |
1718 | * far less concerning. | |
1719 | */ | |
1720 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 1721 | int node_num, int slot_num) |
ccd979bd MF |
1722 | { |
1723 | int status = 0; | |
ccd979bd MF |
1724 | struct ocfs2_dinode *la_copy = NULL; |
1725 | struct ocfs2_dinode *tl_copy = NULL; | |
1726 | ||
b4107950 | 1727 | trace_ocfs2_recover_node(node_num, slot_num, osb->node_num); |
ccd979bd MF |
1728 | |
1729 | /* Should not ever be called to recover ourselves -- in that | |
1730 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1731 | BUG_ON(osb->node_num == node_num); |
ccd979bd | 1732 | |
ccd979bd MF |
1733 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1734 | if (status < 0) { | |
539d8264 | 1735 | if (status == -EBUSY) { |
b4107950 | 1736 | trace_ocfs2_recover_node_skip(slot_num, node_num); |
539d8264 SM |
1737 | status = 0; |
1738 | goto done; | |
1739 | } | |
ccd979bd MF |
1740 | mlog_errno(status); |
1741 | goto done; | |
1742 | } | |
1743 | ||
1744 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1745 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1746 | if (status < 0) { | |
1747 | mlog_errno(status); | |
1748 | goto done; | |
1749 | } | |
1750 | ||
1751 | /* An error from begin_truncate_log_recovery is not | |
1752 | * serious enough to warrant halting the rest of | |
1753 | * recovery. */ | |
1754 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1755 | if (status < 0) | |
1756 | mlog_errno(status); | |
1757 | ||
1758 | /* Likewise, this would be a strange but ultimately not so | |
1759 | * harmful place to get an error... */ | |
8e8a4603 | 1760 | status = ocfs2_clear_slot(osb, slot_num); |
ccd979bd MF |
1761 | if (status < 0) |
1762 | mlog_errno(status); | |
1763 | ||
1764 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1765 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
ed460cff | 1766 | tl_copy, NULL, ORPHAN_NEED_TRUNCATE); |
ccd979bd MF |
1767 | |
1768 | status = 0; | |
1769 | done: | |
1770 | ||
ccd979bd MF |
1771 | return status; |
1772 | } | |
1773 | ||
1774 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1775 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1776 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1777 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1778 | int slot_num) | |
1779 | { | |
1780 | int status, flags; | |
1781 | struct inode *inode = NULL; | |
1782 | ||
1783 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1784 | slot_num); | |
1785 | if (inode == NULL) { | |
1786 | mlog(ML_ERROR, "access error\n"); | |
1787 | status = -EACCES; | |
1788 | goto bail; | |
1789 | } | |
1790 | if (is_bad_inode(inode)) { | |
1791 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1792 | iput(inode); | |
1793 | inode = NULL; | |
1794 | status = -EACCES; | |
1795 | goto bail; | |
1796 | } | |
1797 | SET_INODE_JOURNAL(inode); | |
1798 | ||
1799 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
e63aecb6 | 1800 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
ccd979bd MF |
1801 | if (status < 0) { |
1802 | if (status != -EAGAIN) | |
1803 | mlog_errno(status); | |
1804 | goto bail; | |
1805 | } | |
1806 | ||
e63aecb6 | 1807 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1808 | bail: |
72865d92 | 1809 | iput(inode); |
ccd979bd MF |
1810 | |
1811 | return status; | |
1812 | } | |
1813 | ||
1814 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1815 | * slot info struct has been updated from disk. */ | |
1816 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1817 | { | |
d85b20e4 JB |
1818 | unsigned int node_num; |
1819 | int status, i; | |
a1af7d15 | 1820 | u32 gen; |
539d8264 SM |
1821 | struct buffer_head *bh = NULL; |
1822 | struct ocfs2_dinode *di; | |
ccd979bd MF |
1823 | |
1824 | /* This is called with the super block cluster lock, so we | |
1825 | * know that the slot map can't change underneath us. */ | |
1826 | ||
d85b20e4 | 1827 | for (i = 0; i < osb->max_slots; i++) { |
539d8264 SM |
1828 | /* Read journal inode to get the recovery generation */ |
1829 | status = ocfs2_read_journal_inode(osb, i, &bh, NULL); | |
1830 | if (status) { | |
1831 | mlog_errno(status); | |
1832 | goto bail; | |
1833 | } | |
1834 | di = (struct ocfs2_dinode *)bh->b_data; | |
a1af7d15 | 1835 | gen = ocfs2_get_recovery_generation(di); |
539d8264 SM |
1836 | brelse(bh); |
1837 | bh = NULL; | |
1838 | ||
a1af7d15 MF |
1839 | spin_lock(&osb->osb_lock); |
1840 | osb->slot_recovery_generations[i] = gen; | |
1841 | ||
b4107950 TM |
1842 | trace_ocfs2_mark_dead_nodes(i, |
1843 | osb->slot_recovery_generations[i]); | |
539d8264 | 1844 | |
a1af7d15 MF |
1845 | if (i == osb->slot_num) { |
1846 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1847 | continue; |
a1af7d15 | 1848 | } |
d85b20e4 JB |
1849 | |
1850 | status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); | |
a1af7d15 MF |
1851 | if (status == -ENOENT) { |
1852 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1853 | continue; |
a1af7d15 | 1854 | } |
ccd979bd | 1855 | |
a1af7d15 MF |
1856 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1857 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1858 | continue; |
a1af7d15 | 1859 | } |
d85b20e4 | 1860 | spin_unlock(&osb->osb_lock); |
ccd979bd MF |
1861 | |
1862 | /* Ok, we have a slot occupied by another node which | |
1863 | * is not in the recovery map. We trylock his journal | |
1864 | * file here to test if he's alive. */ | |
1865 | status = ocfs2_trylock_journal(osb, i); | |
1866 | if (!status) { | |
1867 | /* Since we're called from mount, we know that | |
1868 | * the recovery thread can't race us on | |
1869 | * setting / checking the recovery bits. */ | |
1870 | ocfs2_recovery_thread(osb, node_num); | |
1871 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1872 | mlog_errno(status); | |
1873 | goto bail; | |
1874 | } | |
ccd979bd | 1875 | } |
ccd979bd MF |
1876 | |
1877 | status = 0; | |
1878 | bail: | |
ccd979bd MF |
1879 | return status; |
1880 | } | |
1881 | ||
83273932 SE |
1882 | /* |
1883 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some | |
1884 | * randomness to the timeout to minimize multple nodes firing the timer at the | |
1885 | * same time. | |
1886 | */ | |
1887 | static inline unsigned long ocfs2_orphan_scan_timeout(void) | |
1888 | { | |
1889 | unsigned long time; | |
1890 | ||
1891 | get_random_bytes(&time, sizeof(time)); | |
1892 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); | |
1893 | return msecs_to_jiffies(time); | |
1894 | } | |
1895 | ||
1896 | /* | |
1897 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for | |
1898 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This | |
1899 | * is done to catch any orphans that are left over in orphan directories. | |
1900 | * | |
a035bff6 SM |
1901 | * It scans all slots, even ones that are in use. It does so to handle the |
1902 | * case described below: | |
1903 | * | |
1904 | * Node 1 has an inode it was using. The dentry went away due to memory | |
1905 | * pressure. Node 1 closes the inode, but it's on the free list. The node | |
1906 | * has the open lock. | |
1907 | * Node 2 unlinks the inode. It grabs the dentry lock to notify others, | |
1908 | * but node 1 has no dentry and doesn't get the message. It trylocks the | |
1909 | * open lock, sees that another node has a PR, and does nothing. | |
1910 | * Later node 2 runs its orphan dir. It igets the inode, trylocks the | |
1911 | * open lock, sees the PR still, and does nothing. | |
1912 | * Basically, we have to trigger an orphan iput on node 1. The only way | |
1913 | * for this to happen is if node 1 runs node 2's orphan dir. | |
1914 | * | |
83273932 SE |
1915 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT |
1916 | * seconds. It gets an EX lock on os_lockres and checks sequence number | |
1917 | * stored in LVB. If the sequence number has changed, it means some other | |
1918 | * node has done the scan. This node skips the scan and tracks the | |
1919 | * sequence number. If the sequence number didn't change, it means a scan | |
1920 | * hasn't happened. The node queues a scan and increments the | |
1921 | * sequence number in the LVB. | |
1922 | */ | |
b519ea6d | 1923 | static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) |
83273932 SE |
1924 | { |
1925 | struct ocfs2_orphan_scan *os; | |
1926 | int status, i; | |
1927 | u32 seqno = 0; | |
1928 | ||
1929 | os = &osb->osb_orphan_scan; | |
1930 | ||
692684e1 SM |
1931 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
1932 | goto out; | |
1933 | ||
b4107950 TM |
1934 | trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno, |
1935 | atomic_read(&os->os_state)); | |
1936 | ||
df152c24 | 1937 | status = ocfs2_orphan_scan_lock(osb, &seqno); |
83273932 SE |
1938 | if (status < 0) { |
1939 | if (status != -EAGAIN) | |
1940 | mlog_errno(status); | |
1941 | goto out; | |
1942 | } | |
1943 | ||
692684e1 SM |
1944 | /* Do no queue the tasks if the volume is being umounted */ |
1945 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
1946 | goto unlock; | |
1947 | ||
83273932 SE |
1948 | if (os->os_seqno != seqno) { |
1949 | os->os_seqno = seqno; | |
1950 | goto unlock; | |
1951 | } | |
1952 | ||
1953 | for (i = 0; i < osb->max_slots; i++) | |
1954 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, | |
ed460cff | 1955 | NULL, ORPHAN_NO_NEED_TRUNCATE); |
83273932 SE |
1956 | /* |
1957 | * We queued a recovery on orphan slots, increment the sequence | |
1958 | * number and update LVB so other node will skip the scan for a while | |
1959 | */ | |
1960 | seqno++; | |
15633a22 | 1961 | os->os_count++; |
395627b0 | 1962 | os->os_scantime = ktime_get_seconds(); |
83273932 | 1963 | unlock: |
df152c24 | 1964 | ocfs2_orphan_scan_unlock(osb, seqno); |
83273932 | 1965 | out: |
b4107950 TM |
1966 | trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno, |
1967 | atomic_read(&os->os_state)); | |
83273932 SE |
1968 | return; |
1969 | } | |
1970 | ||
1971 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ | |
b519ea6d | 1972 | static void ocfs2_orphan_scan_work(struct work_struct *work) |
83273932 SE |
1973 | { |
1974 | struct ocfs2_orphan_scan *os; | |
1975 | struct ocfs2_super *osb; | |
1976 | ||
1977 | os = container_of(work, struct ocfs2_orphan_scan, | |
1978 | os_orphan_scan_work.work); | |
1979 | osb = os->os_osb; | |
1980 | ||
1981 | mutex_lock(&os->os_lock); | |
1982 | ocfs2_queue_orphan_scan(osb); | |
692684e1 | 1983 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) |
35ddf78e | 1984 | queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work, |
692684e1 | 1985 | ocfs2_orphan_scan_timeout()); |
83273932 SE |
1986 | mutex_unlock(&os->os_lock); |
1987 | } | |
1988 | ||
1989 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) | |
1990 | { | |
1991 | struct ocfs2_orphan_scan *os; | |
1992 | ||
1993 | os = &osb->osb_orphan_scan; | |
df152c24 SM |
1994 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { |
1995 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1996 | mutex_lock(&os->os_lock); | |
1997 | cancel_delayed_work(&os->os_orphan_scan_work); | |
1998 | mutex_unlock(&os->os_lock); | |
1999 | } | |
83273932 SE |
2000 | } |
2001 | ||
df152c24 | 2002 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
83273932 SE |
2003 | { |
2004 | struct ocfs2_orphan_scan *os; | |
2005 | ||
2006 | os = &osb->osb_orphan_scan; | |
2007 | os->os_osb = osb; | |
15633a22 | 2008 | os->os_count = 0; |
3211949f | 2009 | os->os_seqno = 0; |
83273932 | 2010 | mutex_init(&os->os_lock); |
df152c24 | 2011 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
8b712cd5 | 2012 | } |
83273932 | 2013 | |
8b712cd5 JM |
2014 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
2015 | { | |
2016 | struct ocfs2_orphan_scan *os; | |
2017 | ||
2018 | os = &osb->osb_orphan_scan; | |
395627b0 | 2019 | os->os_scantime = ktime_get_seconds(); |
df152c24 SM |
2020 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
2021 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
2022 | else { | |
2023 | atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); | |
35ddf78e | 2024 | queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work, |
40f165f4 | 2025 | ocfs2_orphan_scan_timeout()); |
df152c24 | 2026 | } |
83273932 SE |
2027 | } |
2028 | ||
5eae5b96 | 2029 | struct ocfs2_orphan_filldir_priv { |
3704412b | 2030 | struct dir_context ctx; |
5eae5b96 MF |
2031 | struct inode *head; |
2032 | struct ocfs2_super *osb; | |
30edc43c | 2033 | enum ocfs2_orphan_reco_type orphan_reco_type; |
5eae5b96 MF |
2034 | }; |
2035 | ||
ac7576f4 MS |
2036 | static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name, |
2037 | int name_len, loff_t pos, u64 ino, | |
2038 | unsigned type) | |
5eae5b96 | 2039 | { |
ac7576f4 MS |
2040 | struct ocfs2_orphan_filldir_priv *p = |
2041 | container_of(ctx, struct ocfs2_orphan_filldir_priv, ctx); | |
5eae5b96 MF |
2042 | struct inode *iter; |
2043 | ||
2044 | if (name_len == 1 && !strncmp(".", name, 1)) | |
2045 | return 0; | |
2046 | if (name_len == 2 && !strncmp("..", name, 2)) | |
2047 | return 0; | |
2048 | ||
30edc43c JQ |
2049 | /* do not include dio entry in case of orphan scan */ |
2050 | if ((p->orphan_reco_type == ORPHAN_NO_NEED_TRUNCATE) && | |
2051 | (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, | |
2052 | OCFS2_DIO_ORPHAN_PREFIX_LEN))) | |
2053 | return 0; | |
2054 | ||
5eae5b96 MF |
2055 | /* Skip bad inodes so that recovery can continue */ |
2056 | iter = ocfs2_iget(p->osb, ino, | |
5fa0613e | 2057 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); |
5eae5b96 MF |
2058 | if (IS_ERR(iter)) |
2059 | return 0; | |
2060 | ||
93d911fc JQ |
2061 | if (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, |
2062 | OCFS2_DIO_ORPHAN_PREFIX_LEN)) | |
2063 | OCFS2_I(iter)->ip_flags |= OCFS2_INODE_DIO_ORPHAN_ENTRY; | |
2064 | ||
ed460cff JQ |
2065 | /* Skip inodes which are already added to recover list, since dio may |
2066 | * happen concurrently with unlink/rename */ | |
2067 | if (OCFS2_I(iter)->ip_next_orphan) { | |
2068 | iput(iter); | |
2069 | return 0; | |
2070 | } | |
2071 | ||
b4107950 | 2072 | trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno); |
5eae5b96 MF |
2073 | /* No locking is required for the next_orphan queue as there |
2074 | * is only ever a single process doing orphan recovery. */ | |
2075 | OCFS2_I(iter)->ip_next_orphan = p->head; | |
2076 | p->head = iter; | |
2077 | ||
2078 | return 0; | |
2079 | } | |
2080 | ||
b4df6ed8 MF |
2081 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
2082 | int slot, | |
30edc43c JQ |
2083 | struct inode **head, |
2084 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
ccd979bd | 2085 | { |
b4df6ed8 | 2086 | int status; |
ccd979bd | 2087 | struct inode *orphan_dir_inode = NULL; |
3704412b AV |
2088 | struct ocfs2_orphan_filldir_priv priv = { |
2089 | .ctx.actor = ocfs2_orphan_filldir, | |
2090 | .osb = osb, | |
30edc43c JQ |
2091 | .head = *head, |
2092 | .orphan_reco_type = orphan_reco_type | |
3704412b | 2093 | }; |
ccd979bd MF |
2094 | |
2095 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2096 | ORPHAN_DIR_SYSTEM_INODE, | |
2097 | slot); | |
2098 | if (!orphan_dir_inode) { | |
2099 | status = -ENOENT; | |
2100 | mlog_errno(status); | |
b4df6ed8 | 2101 | return status; |
2bd63216 | 2102 | } |
ccd979bd | 2103 | |
5955102c | 2104 | inode_lock(orphan_dir_inode); |
e63aecb6 | 2105 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
ccd979bd | 2106 | if (status < 0) { |
ccd979bd MF |
2107 | mlog_errno(status); |
2108 | goto out; | |
2109 | } | |
ccd979bd | 2110 | |
3704412b | 2111 | status = ocfs2_dir_foreach(orphan_dir_inode, &priv.ctx); |
5eae5b96 MF |
2112 | if (status) { |
2113 | mlog_errno(status); | |
a86370fb | 2114 | goto out_cluster; |
ccd979bd | 2115 | } |
ccd979bd | 2116 | |
5eae5b96 MF |
2117 | *head = priv.head; |
2118 | ||
a86370fb | 2119 | out_cluster: |
e63aecb6 | 2120 | ocfs2_inode_unlock(orphan_dir_inode, 0); |
b4df6ed8 | 2121 | out: |
5955102c | 2122 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2123 | iput(orphan_dir_inode); |
b4df6ed8 MF |
2124 | return status; |
2125 | } | |
2126 | ||
2127 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
2128 | int slot) | |
2129 | { | |
2130 | int ret; | |
2131 | ||
2132 | spin_lock(&osb->osb_lock); | |
2133 | ret = !osb->osb_orphan_wipes[slot]; | |
2134 | spin_unlock(&osb->osb_lock); | |
2135 | return ret; | |
2136 | } | |
2137 | ||
2138 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
2139 | int slot) | |
2140 | { | |
2141 | spin_lock(&osb->osb_lock); | |
2142 | /* Mark ourselves such that new processes in delete_inode() | |
2143 | * know to quit early. */ | |
2144 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2145 | while (osb->osb_orphan_wipes[slot]) { | |
2146 | /* If any processes are already in the middle of an | |
2147 | * orphan wipe on this dir, then we need to wait for | |
2148 | * them. */ | |
2149 | spin_unlock(&osb->osb_lock); | |
2150 | wait_event_interruptible(osb->osb_wipe_event, | |
2151 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
2152 | spin_lock(&osb->osb_lock); | |
2153 | } | |
2154 | spin_unlock(&osb->osb_lock); | |
2155 | } | |
2156 | ||
2157 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
2158 | int slot) | |
2159 | { | |
2160 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2161 | } | |
2162 | ||
2163 | /* | |
2164 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
2165 | * must run during recovery. Our strategy here is to build a list of | |
2166 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
2167 | * (most) of the rest of the work. | |
2168 | * | |
2169 | * Orphan recovery can happen at any time, not just mount so we have a | |
2170 | * couple of extra considerations. | |
2171 | * | |
2172 | * - We grab as many inodes as we can under the orphan dir lock - | |
2173 | * doing iget() outside the orphan dir risks getting a reference on | |
2174 | * an invalid inode. | |
2175 | * - We must be sure not to deadlock with other processes on the | |
2176 | * system wanting to run delete_inode(). This can happen when they go | |
2177 | * to lock the orphan dir and the orphan recovery process attempts to | |
2178 | * iget() inside the orphan dir lock. This can be avoided by | |
2179 | * advertising our state to ocfs2_delete_inode(). | |
2180 | */ | |
2181 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
ed460cff JQ |
2182 | int slot, |
2183 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
b4df6ed8 MF |
2184 | { |
2185 | int ret = 0; | |
2186 | struct inode *inode = NULL; | |
2187 | struct inode *iter; | |
2188 | struct ocfs2_inode_info *oi; | |
cf1776a9 JQ |
2189 | struct buffer_head *di_bh = NULL; |
2190 | struct ocfs2_dinode *di = NULL; | |
b4df6ed8 | 2191 | |
b4107950 | 2192 | trace_ocfs2_recover_orphans(slot); |
b4df6ed8 MF |
2193 | |
2194 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
30edc43c | 2195 | ret = ocfs2_queue_orphans(osb, slot, &inode, orphan_reco_type); |
b4df6ed8 MF |
2196 | ocfs2_clear_recovering_orphan_dir(osb, slot); |
2197 | ||
2198 | /* Error here should be noted, but we want to continue with as | |
2199 | * many queued inodes as we've got. */ | |
2200 | if (ret) | |
2201 | mlog_errno(ret); | |
ccd979bd MF |
2202 | |
2203 | while (inode) { | |
2204 | oi = OCFS2_I(inode); | |
b4107950 TM |
2205 | trace_ocfs2_recover_orphans_iput( |
2206 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
2207 | |
2208 | iter = oi->ip_next_orphan; | |
ed460cff | 2209 | oi->ip_next_orphan = NULL; |
ccd979bd | 2210 | |
93d911fc | 2211 | if (oi->ip_flags & OCFS2_INODE_DIO_ORPHAN_ENTRY) { |
5955102c | 2212 | inode_lock(inode); |
93d911fc JQ |
2213 | ret = ocfs2_rw_lock(inode, 1); |
2214 | if (ret < 0) { | |
2215 | mlog_errno(ret); | |
2216 | goto unlock_mutex; | |
2217 | } | |
2218 | /* | |
2219 | * We need to take and drop the inode lock to | |
2220 | * force read inode from disk. | |
2221 | */ | |
2222 | ret = ocfs2_inode_lock(inode, &di_bh, 1); | |
2223 | if (ret) { | |
2224 | mlog_errno(ret); | |
2225 | goto unlock_rw; | |
2226 | } | |
2227 | ||
2228 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2229 | ||
2230 | if (di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)) { | |
2231 | ret = ocfs2_truncate_file(inode, di_bh, | |
2232 | i_size_read(inode)); | |
2233 | if (ret < 0) { | |
2234 | if (ret != -ENOSPC) | |
2235 | mlog_errno(ret); | |
2236 | goto unlock_inode; | |
2237 | } | |
cf1776a9 | 2238 | |
93d911fc JQ |
2239 | ret = ocfs2_del_inode_from_orphan(osb, inode, |
2240 | di_bh, 0, 0); | |
2241 | if (ret) | |
2242 | mlog_errno(ret); | |
2243 | } | |
2244 | unlock_inode: | |
2245 | ocfs2_inode_unlock(inode, 1); | |
2246 | brelse(di_bh); | |
2247 | di_bh = NULL; | |
2248 | unlock_rw: | |
2249 | ocfs2_rw_unlock(inode, 1); | |
2250 | unlock_mutex: | |
5955102c | 2251 | inode_unlock(inode); |
ed460cff | 2252 | |
93d911fc JQ |
2253 | /* clear dio flag in ocfs2_inode_info */ |
2254 | oi->ip_flags &= ~OCFS2_INODE_DIO_ORPHAN_ENTRY; | |
2255 | } else { | |
ed460cff JQ |
2256 | spin_lock(&oi->ip_lock); |
2257 | /* Set the proper information to get us going into | |
2258 | * ocfs2_delete_inode. */ | |
2259 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
2260 | spin_unlock(&oi->ip_lock); | |
ad694821 JQ |
2261 | } |
2262 | ||
ccd979bd | 2263 | iput(inode); |
ccd979bd MF |
2264 | inode = iter; |
2265 | } | |
2266 | ||
b4df6ed8 | 2267 | return ret; |
ccd979bd MF |
2268 | } |
2269 | ||
19ece546 | 2270 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
ccd979bd MF |
2271 | { |
2272 | /* This check is good because ocfs2 will wait on our recovery | |
2273 | * thread before changing it to something other than MOUNTED | |
2274 | * or DISABLED. */ | |
2275 | wait_event(osb->osb_mount_event, | |
19ece546 JK |
2276 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2277 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || | |
ccd979bd MF |
2278 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2279 | ||
2280 | /* If there's an error on mount, then we may never get to the | |
2281 | * MOUNTED flag, but this is set right before | |
2282 | * dismount_volume() so we can trust it. */ | |
2283 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
b4107950 | 2284 | trace_ocfs2_wait_on_mount(VOLUME_DISABLED); |
ccd979bd MF |
2285 | mlog(0, "mount error, exiting!\n"); |
2286 | return -EBUSY; | |
2287 | } | |
2288 | ||
2289 | return 0; | |
2290 | } | |
2291 | ||
2292 | static int ocfs2_commit_thread(void *arg) | |
2293 | { | |
2294 | int status; | |
2295 | struct ocfs2_super *osb = arg; | |
2296 | struct ocfs2_journal *journal = osb->journal; | |
2297 | ||
2298 | /* we can trust j_num_trans here because _should_stop() is only set in | |
2299 | * shutdown and nobody other than ourselves should be able to start | |
2300 | * transactions. committing on shutdown might take a few iterations | |
2301 | * as final transactions put deleted inodes on the list */ | |
2302 | while (!(kthread_should_stop() && | |
2303 | atomic_read(&journal->j_num_trans) == 0)) { | |
2304 | ||
745ae8ba MF |
2305 | wait_event_interruptible(osb->checkpoint_event, |
2306 | atomic_read(&journal->j_num_trans) | |
2307 | || kthread_should_stop()); | |
ccd979bd MF |
2308 | |
2309 | status = ocfs2_commit_cache(osb); | |
55b465b6 JQ |
2310 | if (status < 0) { |
2311 | static unsigned long abort_warn_time; | |
2312 | ||
2313 | /* Warn about this once per minute */ | |
2314 | if (printk_timed_ratelimit(&abort_warn_time, 60*HZ)) | |
2315 | mlog(ML_ERROR, "status = %d, journal is " | |
2316 | "already aborted.\n", status); | |
2317 | /* | |
2318 | * After ocfs2_commit_cache() fails, j_num_trans has a | |
2319 | * non-zero value. Sleep here to avoid a busy-wait | |
2320 | * loop. | |
2321 | */ | |
2322 | msleep_interruptible(1000); | |
2323 | } | |
ccd979bd MF |
2324 | |
2325 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
2326 | mlog(ML_KTHREAD, | |
2327 | "commit_thread: %u transactions pending on " | |
2328 | "shutdown\n", | |
2329 | atomic_read(&journal->j_num_trans)); | |
2330 | } | |
2331 | } | |
2332 | ||
2333 | return 0; | |
2334 | } | |
2335 | ||
539d8264 SM |
2336 | /* Reads all the journal inodes without taking any cluster locks. Used |
2337 | * for hard readonly access to determine whether any journal requires | |
2338 | * recovery. Also used to refresh the recovery generation numbers after | |
2339 | * a journal has been recovered by another node. | |
2340 | */ | |
ccd979bd MF |
2341 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2342 | { | |
2343 | int ret = 0; | |
2344 | unsigned int slot; | |
539d8264 | 2345 | struct buffer_head *di_bh = NULL; |
ccd979bd | 2346 | struct ocfs2_dinode *di; |
539d8264 | 2347 | int journal_dirty = 0; |
ccd979bd MF |
2348 | |
2349 | for(slot = 0; slot < osb->max_slots; slot++) { | |
539d8264 SM |
2350 | ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); |
2351 | if (ret) { | |
ccd979bd MF |
2352 | mlog_errno(ret); |
2353 | goto out; | |
2354 | } | |
2355 | ||
2356 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2357 | ||
539d8264 SM |
2358 | osb->slot_recovery_generations[slot] = |
2359 | ocfs2_get_recovery_generation(di); | |
2360 | ||
ccd979bd MF |
2361 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2362 | OCFS2_JOURNAL_DIRTY_FL) | |
539d8264 | 2363 | journal_dirty = 1; |
ccd979bd MF |
2364 | |
2365 | brelse(di_bh); | |
539d8264 | 2366 | di_bh = NULL; |
ccd979bd MF |
2367 | } |
2368 | ||
2369 | out: | |
539d8264 SM |
2370 | if (journal_dirty) |
2371 | ret = -EROFS; | |
ccd979bd MF |
2372 | return ret; |
2373 | } |