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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
ccd979bd MF |
2 | /* -*- mode: c; c-basic-offset: 8; -*- |
3 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
4 | * | |
5 | * journal.c | |
6 | * | |
7 | * Defines functions of journalling api | |
8 | * | |
9 | * Copyright (C) 2003, 2004 Oracle. All rights reserved. | |
ccd979bd MF |
10 | */ |
11 | ||
12 | #include <linux/fs.h> | |
13 | #include <linux/types.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/highmem.h> | |
16 | #include <linux/kthread.h> | |
83273932 SE |
17 | #include <linux/time.h> |
18 | #include <linux/random.h> | |
55b465b6 | 19 | #include <linux/delay.h> |
ccd979bd | 20 | |
ccd979bd MF |
21 | #include <cluster/masklog.h> |
22 | ||
23 | #include "ocfs2.h" | |
24 | ||
25 | #include "alloc.h" | |
50655ae9 | 26 | #include "blockcheck.h" |
316f4b9f | 27 | #include "dir.h" |
ccd979bd MF |
28 | #include "dlmglue.h" |
29 | #include "extent_map.h" | |
30 | #include "heartbeat.h" | |
31 | #include "inode.h" | |
32 | #include "journal.h" | |
33 | #include "localalloc.h" | |
ccd979bd MF |
34 | #include "slot_map.h" |
35 | #include "super.h" | |
ccd979bd | 36 | #include "sysfile.h" |
0cf2f763 | 37 | #include "uptodate.h" |
2205363d | 38 | #include "quota.h" |
ed460cff JQ |
39 | #include "file.h" |
40 | #include "namei.h" | |
ccd979bd MF |
41 | |
42 | #include "buffer_head_io.h" | |
b4107950 | 43 | #include "ocfs2_trace.h" |
ccd979bd | 44 | |
34af946a | 45 | DEFINE_SPINLOCK(trans_inc_lock); |
ccd979bd | 46 | |
83273932 SE |
47 | #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 |
48 | ||
ccd979bd MF |
49 | static int ocfs2_force_read_journal(struct inode *inode); |
50 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 51 | int node_num, int slot_num); |
ccd979bd MF |
52 | static int __ocfs2_recovery_thread(void *arg); |
53 | static int ocfs2_commit_cache(struct ocfs2_super *osb); | |
19ece546 | 54 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); |
ccd979bd | 55 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 56 | int dirty, int replayed); |
ccd979bd MF |
57 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
58 | int slot_num); | |
59 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
ed460cff JQ |
60 | int slot, |
61 | enum ocfs2_orphan_reco_type orphan_reco_type); | |
ccd979bd | 62 | static int ocfs2_commit_thread(void *arg); |
9140db04 SE |
63 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
64 | int slot_num, | |
65 | struct ocfs2_dinode *la_dinode, | |
66 | struct ocfs2_dinode *tl_dinode, | |
ed460cff JQ |
67 | struct ocfs2_quota_recovery *qrec, |
68 | enum ocfs2_orphan_reco_type orphan_reco_type); | |
ccd979bd | 69 | |
19ece546 JK |
70 | static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) |
71 | { | |
72 | return __ocfs2_wait_on_mount(osb, 0); | |
73 | } | |
74 | ||
75 | static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) | |
76 | { | |
77 | return __ocfs2_wait_on_mount(osb, 1); | |
78 | } | |
79 | ||
9140db04 SE |
80 | /* |
81 | * This replay_map is to track online/offline slots, so we could recover | |
82 | * offline slots during recovery and mount | |
83 | */ | |
84 | ||
85 | enum ocfs2_replay_state { | |
86 | REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ | |
87 | REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ | |
88 | REPLAY_DONE /* Replay was already queued */ | |
89 | }; | |
90 | ||
91 | struct ocfs2_replay_map { | |
92 | unsigned int rm_slots; | |
93 | enum ocfs2_replay_state rm_state; | |
3c9210d4 | 94 | unsigned char rm_replay_slots[]; |
9140db04 SE |
95 | }; |
96 | ||
b519ea6d | 97 | static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) |
9140db04 SE |
98 | { |
99 | if (!osb->replay_map) | |
100 | return; | |
101 | ||
102 | /* If we've already queued the replay, we don't have any more to do */ | |
103 | if (osb->replay_map->rm_state == REPLAY_DONE) | |
104 | return; | |
105 | ||
106 | osb->replay_map->rm_state = state; | |
107 | } | |
108 | ||
109 | int ocfs2_compute_replay_slots(struct ocfs2_super *osb) | |
110 | { | |
111 | struct ocfs2_replay_map *replay_map; | |
112 | int i, node_num; | |
113 | ||
114 | /* If replay map is already set, we don't do it again */ | |
115 | if (osb->replay_map) | |
116 | return 0; | |
117 | ||
118 | replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + | |
119 | (osb->max_slots * sizeof(char)), GFP_KERNEL); | |
120 | ||
121 | if (!replay_map) { | |
122 | mlog_errno(-ENOMEM); | |
123 | return -ENOMEM; | |
124 | } | |
125 | ||
126 | spin_lock(&osb->osb_lock); | |
127 | ||
128 | replay_map->rm_slots = osb->max_slots; | |
129 | replay_map->rm_state = REPLAY_UNNEEDED; | |
130 | ||
131 | /* set rm_replay_slots for offline slot(s) */ | |
132 | for (i = 0; i < replay_map->rm_slots; i++) { | |
133 | if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT) | |
134 | replay_map->rm_replay_slots[i] = 1; | |
135 | } | |
136 | ||
137 | osb->replay_map = replay_map; | |
138 | spin_unlock(&osb->osb_lock); | |
139 | return 0; | |
140 | } | |
141 | ||
b519ea6d | 142 | static void ocfs2_queue_replay_slots(struct ocfs2_super *osb, |
ed460cff | 143 | enum ocfs2_orphan_reco_type orphan_reco_type) |
9140db04 SE |
144 | { |
145 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
146 | int i; | |
147 | ||
148 | if (!replay_map) | |
149 | return; | |
150 | ||
151 | if (replay_map->rm_state != REPLAY_NEEDED) | |
152 | return; | |
153 | ||
154 | for (i = 0; i < replay_map->rm_slots; i++) | |
155 | if (replay_map->rm_replay_slots[i]) | |
156 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, | |
ed460cff JQ |
157 | NULL, NULL, |
158 | orphan_reco_type); | |
9140db04 SE |
159 | replay_map->rm_state = REPLAY_DONE; |
160 | } | |
161 | ||
b519ea6d | 162 | static void ocfs2_free_replay_slots(struct ocfs2_super *osb) |
9140db04 SE |
163 | { |
164 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
165 | ||
166 | if (!osb->replay_map) | |
167 | return; | |
168 | ||
169 | kfree(replay_map); | |
170 | osb->replay_map = NULL; | |
171 | } | |
172 | ||
553abd04 JB |
173 | int ocfs2_recovery_init(struct ocfs2_super *osb) |
174 | { | |
175 | struct ocfs2_recovery_map *rm; | |
176 | ||
177 | mutex_init(&osb->recovery_lock); | |
178 | osb->disable_recovery = 0; | |
179 | osb->recovery_thread_task = NULL; | |
180 | init_waitqueue_head(&osb->recovery_event); | |
181 | ||
182 | rm = kzalloc(sizeof(struct ocfs2_recovery_map) + | |
183 | osb->max_slots * sizeof(unsigned int), | |
184 | GFP_KERNEL); | |
185 | if (!rm) { | |
186 | mlog_errno(-ENOMEM); | |
187 | return -ENOMEM; | |
188 | } | |
189 | ||
190 | rm->rm_entries = (unsigned int *)((char *)rm + | |
191 | sizeof(struct ocfs2_recovery_map)); | |
192 | osb->recovery_map = rm; | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
198 | * memory barriers to make sure that we'll see the null task before | |
199 | * being woken up */ | |
200 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
201 | { | |
202 | mb(); | |
203 | return osb->recovery_thread_task != NULL; | |
204 | } | |
205 | ||
206 | void ocfs2_recovery_exit(struct ocfs2_super *osb) | |
207 | { | |
208 | struct ocfs2_recovery_map *rm; | |
209 | ||
210 | /* disable any new recovery threads and wait for any currently | |
211 | * running ones to exit. Do this before setting the vol_state. */ | |
212 | mutex_lock(&osb->recovery_lock); | |
213 | osb->disable_recovery = 1; | |
214 | mutex_unlock(&osb->recovery_lock); | |
215 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); | |
216 | ||
217 | /* At this point, we know that no more recovery threads can be | |
218 | * launched, so wait for any recovery completion work to | |
219 | * complete. */ | |
b918c430 YL |
220 | if (osb->ocfs2_wq) |
221 | flush_workqueue(osb->ocfs2_wq); | |
553abd04 JB |
222 | |
223 | /* | |
224 | * Now that recovery is shut down, and the osb is about to be | |
225 | * freed, the osb_lock is not taken here. | |
226 | */ | |
227 | rm = osb->recovery_map; | |
228 | /* XXX: Should we bug if there are dirty entries? */ | |
229 | ||
230 | kfree(rm); | |
231 | } | |
232 | ||
233 | static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, | |
234 | unsigned int node_num) | |
235 | { | |
236 | int i; | |
237 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
238 | ||
239 | assert_spin_locked(&osb->osb_lock); | |
240 | ||
241 | for (i = 0; i < rm->rm_used; i++) { | |
242 | if (rm->rm_entries[i] == node_num) | |
243 | return 1; | |
244 | } | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | /* Behaves like test-and-set. Returns the previous value */ | |
250 | static int ocfs2_recovery_map_set(struct ocfs2_super *osb, | |
251 | unsigned int node_num) | |
252 | { | |
253 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
254 | ||
255 | spin_lock(&osb->osb_lock); | |
256 | if (__ocfs2_recovery_map_test(osb, node_num)) { | |
257 | spin_unlock(&osb->osb_lock); | |
258 | return 1; | |
259 | } | |
260 | ||
261 | /* XXX: Can this be exploited? Not from o2dlm... */ | |
262 | BUG_ON(rm->rm_used >= osb->max_slots); | |
263 | ||
264 | rm->rm_entries[rm->rm_used] = node_num; | |
265 | rm->rm_used++; | |
266 | spin_unlock(&osb->osb_lock); | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, | |
272 | unsigned int node_num) | |
273 | { | |
274 | int i; | |
275 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
276 | ||
277 | spin_lock(&osb->osb_lock); | |
278 | ||
279 | for (i = 0; i < rm->rm_used; i++) { | |
280 | if (rm->rm_entries[i] == node_num) | |
281 | break; | |
282 | } | |
283 | ||
284 | if (i < rm->rm_used) { | |
285 | /* XXX: be careful with the pointer math */ | |
286 | memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), | |
287 | (rm->rm_used - i - 1) * sizeof(unsigned int)); | |
288 | rm->rm_used--; | |
289 | } | |
290 | ||
291 | spin_unlock(&osb->osb_lock); | |
292 | } | |
293 | ||
ccd979bd MF |
294 | static int ocfs2_commit_cache(struct ocfs2_super *osb) |
295 | { | |
296 | int status = 0; | |
297 | unsigned int flushed; | |
ccd979bd MF |
298 | struct ocfs2_journal *journal = NULL; |
299 | ||
ccd979bd MF |
300 | journal = osb->journal; |
301 | ||
302 | /* Flush all pending commits and checkpoint the journal. */ | |
303 | down_write(&journal->j_trans_barrier); | |
304 | ||
b4107950 TM |
305 | flushed = atomic_read(&journal->j_num_trans); |
306 | trace_ocfs2_commit_cache_begin(flushed); | |
307 | if (flushed == 0) { | |
ccd979bd | 308 | up_write(&journal->j_trans_barrier); |
ccd979bd MF |
309 | goto finally; |
310 | } | |
311 | ||
2b4e30fb JB |
312 | jbd2_journal_lock_updates(journal->j_journal); |
313 | status = jbd2_journal_flush(journal->j_journal); | |
314 | jbd2_journal_unlock_updates(journal->j_journal); | |
ccd979bd MF |
315 | if (status < 0) { |
316 | up_write(&journal->j_trans_barrier); | |
317 | mlog_errno(status); | |
318 | goto finally; | |
319 | } | |
320 | ||
f9c57ada | 321 | ocfs2_inc_trans_id(journal); |
ccd979bd MF |
322 | |
323 | flushed = atomic_read(&journal->j_num_trans); | |
324 | atomic_set(&journal->j_num_trans, 0); | |
325 | up_write(&journal->j_trans_barrier); | |
326 | ||
b4107950 | 327 | trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed); |
ccd979bd | 328 | |
34d024f8 | 329 | ocfs2_wake_downconvert_thread(osb); |
ccd979bd MF |
330 | wake_up(&journal->j_checkpointed); |
331 | finally: | |
ccd979bd MF |
332 | return status; |
333 | } | |
334 | ||
1fabe148 | 335 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
ccd979bd | 336 | { |
ccd979bd | 337 | journal_t *journal = osb->journal->j_journal; |
1fabe148 | 338 | handle_t *handle; |
ccd979bd | 339 | |
ebdec83b | 340 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd | 341 | |
65eff9cc MF |
342 | if (ocfs2_is_hard_readonly(osb)) |
343 | return ERR_PTR(-EROFS); | |
ccd979bd MF |
344 | |
345 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
346 | BUG_ON(max_buffs <= 0); | |
347 | ||
90e86a63 JK |
348 | /* Nested transaction? Just return the handle... */ |
349 | if (journal_current_handle()) | |
350 | return jbd2_journal_start(journal, max_buffs); | |
ccd979bd | 351 | |
fef6925c JK |
352 | sb_start_intwrite(osb->sb); |
353 | ||
ccd979bd MF |
354 | down_read(&osb->journal->j_trans_barrier); |
355 | ||
2b4e30fb | 356 | handle = jbd2_journal_start(journal, max_buffs); |
1fabe148 | 357 | if (IS_ERR(handle)) { |
ccd979bd | 358 | up_read(&osb->journal->j_trans_barrier); |
fef6925c | 359 | sb_end_intwrite(osb->sb); |
ccd979bd | 360 | |
1fabe148 | 361 | mlog_errno(PTR_ERR(handle)); |
ccd979bd MF |
362 | |
363 | if (is_journal_aborted(journal)) { | |
7ecef14a | 364 | ocfs2_abort(osb->sb, "Detected aborted journal\n"); |
1fabe148 | 365 | handle = ERR_PTR(-EROFS); |
ccd979bd | 366 | } |
c271c5c2 SM |
367 | } else { |
368 | if (!ocfs2_mount_local(osb)) | |
369 | atomic_inc(&(osb->journal->j_num_trans)); | |
370 | } | |
ccd979bd | 371 | |
ccd979bd | 372 | return handle; |
ccd979bd MF |
373 | } |
374 | ||
1fabe148 MF |
375 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
376 | handle_t *handle) | |
ccd979bd | 377 | { |
90e86a63 | 378 | int ret, nested; |
02dc1af4 | 379 | struct ocfs2_journal *journal = osb->journal; |
ccd979bd MF |
380 | |
381 | BUG_ON(!handle); | |
382 | ||
90e86a63 | 383 | nested = handle->h_ref > 1; |
2b4e30fb | 384 | ret = jbd2_journal_stop(handle); |
1fabe148 MF |
385 | if (ret < 0) |
386 | mlog_errno(ret); | |
ccd979bd | 387 | |
fef6925c | 388 | if (!nested) { |
90e86a63 | 389 | up_read(&journal->j_trans_barrier); |
fef6925c JK |
390 | sb_end_intwrite(osb->sb); |
391 | } | |
ccd979bd | 392 | |
1fabe148 | 393 | return ret; |
ccd979bd MF |
394 | } |
395 | ||
396 | /* | |
c901fb00 | 397 | * 'nblocks' is what you want to add to the current transaction. |
ccd979bd | 398 | * |
2b4e30fb | 399 | * This might call jbd2_journal_restart() which will commit dirty buffers |
e8aed345 MF |
400 | * and then restart the transaction. Before calling |
401 | * ocfs2_extend_trans(), any changed blocks should have been | |
402 | * dirtied. After calling it, all blocks which need to be changed must | |
403 | * go through another set of journal_access/journal_dirty calls. | |
404 | * | |
ccd979bd MF |
405 | * WARNING: This will not release any semaphores or disk locks taken |
406 | * during the transaction, so make sure they were taken *before* | |
407 | * start_trans or we'll have ordering deadlocks. | |
408 | * | |
409 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
410 | * good because transaction ids haven't yet been recorded on the | |
411 | * cluster locks associated with this handle. | |
412 | */ | |
1fc58146 | 413 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
ccd979bd | 414 | { |
c901fb00 | 415 | int status, old_nblocks; |
ccd979bd MF |
416 | |
417 | BUG_ON(!handle); | |
c901fb00 | 418 | BUG_ON(nblocks < 0); |
ccd979bd | 419 | |
c901fb00 TM |
420 | if (!nblocks) |
421 | return 0; | |
422 | ||
9797a902 | 423 | old_nblocks = jbd2_handle_buffer_credits(handle); |
ccd979bd | 424 | |
b4107950 | 425 | trace_ocfs2_extend_trans(old_nblocks, nblocks); |
ccd979bd | 426 | |
e407e397 | 427 | #ifdef CONFIG_OCFS2_DEBUG_FS |
0879c584 MF |
428 | status = 1; |
429 | #else | |
fdc3ef88 | 430 | status = jbd2_journal_extend(handle, nblocks, 0); |
ccd979bd MF |
431 | if (status < 0) { |
432 | mlog_errno(status); | |
433 | goto bail; | |
434 | } | |
0879c584 | 435 | #endif |
ccd979bd MF |
436 | |
437 | if (status > 0) { | |
b4107950 | 438 | trace_ocfs2_extend_trans_restart(old_nblocks + nblocks); |
c901fb00 TM |
439 | status = jbd2_journal_restart(handle, |
440 | old_nblocks + nblocks); | |
ccd979bd | 441 | if (status < 0) { |
ccd979bd MF |
442 | mlog_errno(status); |
443 | goto bail; | |
444 | } | |
01ddf1e1 | 445 | } |
ccd979bd MF |
446 | |
447 | status = 0; | |
448 | bail: | |
ccd979bd MF |
449 | return status; |
450 | } | |
451 | ||
2b1e55c3 YL |
452 | /* |
453 | * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA. | |
454 | * If that fails, restart the transaction & regain write access for the | |
455 | * buffer head which is used for metadata modifications. | |
456 | * Taken from Ext4: extend_or_restart_transaction() | |
457 | */ | |
458 | int ocfs2_allocate_extend_trans(handle_t *handle, int thresh) | |
459 | { | |
460 | int status, old_nblks; | |
461 | ||
462 | BUG_ON(!handle); | |
463 | ||
9797a902 | 464 | old_nblks = jbd2_handle_buffer_credits(handle); |
2b1e55c3 YL |
465 | trace_ocfs2_allocate_extend_trans(old_nblks, thresh); |
466 | ||
467 | if (old_nblks < thresh) | |
468 | return 0; | |
469 | ||
fdc3ef88 | 470 | status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA, 0); |
2b1e55c3 YL |
471 | if (status < 0) { |
472 | mlog_errno(status); | |
473 | goto bail; | |
474 | } | |
475 | ||
476 | if (status > 0) { | |
477 | status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA); | |
478 | if (status < 0) | |
479 | mlog_errno(status); | |
480 | } | |
481 | ||
482 | bail: | |
483 | return status; | |
484 | } | |
485 | ||
486 | ||
50655ae9 JB |
487 | struct ocfs2_triggers { |
488 | struct jbd2_buffer_trigger_type ot_triggers; | |
489 | int ot_offset; | |
490 | }; | |
491 | ||
492 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) | |
493 | { | |
494 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); | |
495 | } | |
496 | ||
13ceef09 | 497 | static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
498 | struct buffer_head *bh, |
499 | void *data, size_t size) | |
500 | { | |
501 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); | |
502 | ||
503 | /* | |
504 | * We aren't guaranteed to have the superblock here, so we | |
505 | * must unconditionally compute the ecc data. | |
506 | * __ocfs2_journal_access() will only set the triggers if | |
507 | * metaecc is enabled. | |
508 | */ | |
509 | ocfs2_block_check_compute(data, size, data + ot->ot_offset); | |
510 | } | |
511 | ||
512 | /* | |
513 | * Quota blocks have their own trigger because the struct ocfs2_block_check | |
514 | * offset depends on the blocksize. | |
515 | */ | |
13ceef09 | 516 | static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
517 | struct buffer_head *bh, |
518 | void *data, size_t size) | |
519 | { | |
520 | struct ocfs2_disk_dqtrailer *dqt = | |
521 | ocfs2_block_dqtrailer(size, data); | |
522 | ||
523 | /* | |
524 | * We aren't guaranteed to have the superblock here, so we | |
525 | * must unconditionally compute the ecc data. | |
526 | * __ocfs2_journal_access() will only set the triggers if | |
527 | * metaecc is enabled. | |
528 | */ | |
529 | ocfs2_block_check_compute(data, size, &dqt->dq_check); | |
530 | } | |
531 | ||
c175a518 JB |
532 | /* |
533 | * Directory blocks also have their own trigger because the | |
534 | * struct ocfs2_block_check offset depends on the blocksize. | |
535 | */ | |
13ceef09 | 536 | static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
c175a518 JB |
537 | struct buffer_head *bh, |
538 | void *data, size_t size) | |
539 | { | |
540 | struct ocfs2_dir_block_trailer *trailer = | |
541 | ocfs2_dir_trailer_from_size(size, data); | |
542 | ||
543 | /* | |
544 | * We aren't guaranteed to have the superblock here, so we | |
545 | * must unconditionally compute the ecc data. | |
546 | * __ocfs2_journal_access() will only set the triggers if | |
547 | * metaecc is enabled. | |
548 | */ | |
549 | ocfs2_block_check_compute(data, size, &trailer->db_check); | |
550 | } | |
551 | ||
50655ae9 JB |
552 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
553 | struct buffer_head *bh) | |
554 | { | |
555 | mlog(ML_ERROR, | |
556 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " | |
557 | "bh->b_blocknr = %llu\n", | |
558 | (unsigned long)bh, | |
559 | (unsigned long long)bh->b_blocknr); | |
560 | ||
74e364ad | 561 | ocfs2_error(bh->b_bdev->bd_super, |
50655ae9 JB |
562 | "JBD2 has aborted our journal, ocfs2 cannot continue\n"); |
563 | } | |
564 | ||
565 | static struct ocfs2_triggers di_triggers = { | |
566 | .ot_triggers = { | |
13ceef09 | 567 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
568 | .t_abort = ocfs2_abort_trigger, |
569 | }, | |
570 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), | |
571 | }; | |
572 | ||
573 | static struct ocfs2_triggers eb_triggers = { | |
574 | .ot_triggers = { | |
13ceef09 | 575 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
576 | .t_abort = ocfs2_abort_trigger, |
577 | }, | |
578 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), | |
579 | }; | |
580 | ||
93c97087 TM |
581 | static struct ocfs2_triggers rb_triggers = { |
582 | .ot_triggers = { | |
13ceef09 | 583 | .t_frozen = ocfs2_frozen_trigger, |
93c97087 TM |
584 | .t_abort = ocfs2_abort_trigger, |
585 | }, | |
586 | .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), | |
587 | }; | |
588 | ||
50655ae9 JB |
589 | static struct ocfs2_triggers gd_triggers = { |
590 | .ot_triggers = { | |
13ceef09 | 591 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
592 | .t_abort = ocfs2_abort_trigger, |
593 | }, | |
594 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), | |
595 | }; | |
596 | ||
c175a518 JB |
597 | static struct ocfs2_triggers db_triggers = { |
598 | .ot_triggers = { | |
13ceef09 | 599 | .t_frozen = ocfs2_db_frozen_trigger, |
c175a518 JB |
600 | .t_abort = ocfs2_abort_trigger, |
601 | }, | |
602 | }; | |
603 | ||
50655ae9 JB |
604 | static struct ocfs2_triggers xb_triggers = { |
605 | .ot_triggers = { | |
13ceef09 | 606 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
607 | .t_abort = ocfs2_abort_trigger, |
608 | }, | |
609 | .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), | |
610 | }; | |
611 | ||
612 | static struct ocfs2_triggers dq_triggers = { | |
613 | .ot_triggers = { | |
13ceef09 | 614 | .t_frozen = ocfs2_dq_frozen_trigger, |
50655ae9 JB |
615 | .t_abort = ocfs2_abort_trigger, |
616 | }, | |
617 | }; | |
618 | ||
9b7895ef MF |
619 | static struct ocfs2_triggers dr_triggers = { |
620 | .ot_triggers = { | |
13ceef09 | 621 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
622 | .t_abort = ocfs2_abort_trigger, |
623 | }, | |
624 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), | |
625 | }; | |
626 | ||
627 | static struct ocfs2_triggers dl_triggers = { | |
628 | .ot_triggers = { | |
13ceef09 | 629 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
630 | .t_abort = ocfs2_abort_trigger, |
631 | }, | |
632 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), | |
633 | }; | |
634 | ||
50655ae9 | 635 | static int __ocfs2_journal_access(handle_t *handle, |
0cf2f763 | 636 | struct ocfs2_caching_info *ci, |
50655ae9 JB |
637 | struct buffer_head *bh, |
638 | struct ocfs2_triggers *triggers, | |
639 | int type) | |
ccd979bd MF |
640 | { |
641 | int status; | |
0cf2f763 JB |
642 | struct ocfs2_super *osb = |
643 | OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); | |
ccd979bd | 644 | |
0cf2f763 | 645 | BUG_ON(!ci || !ci->ci_ops); |
ccd979bd MF |
646 | BUG_ON(!handle); |
647 | BUG_ON(!bh); | |
ccd979bd | 648 | |
b4107950 TM |
649 | trace_ocfs2_journal_access( |
650 | (unsigned long long)ocfs2_metadata_cache_owner(ci), | |
651 | (unsigned long long)bh->b_blocknr, type, bh->b_size); | |
ccd979bd MF |
652 | |
653 | /* we can safely remove this assertion after testing. */ | |
654 | if (!buffer_uptodate(bh)) { | |
655 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
d984187e | 656 | mlog(ML_ERROR, "b_blocknr=%llu, b_state=0x%lx\n", |
657 | (unsigned long long)bh->b_blocknr, bh->b_state); | |
acf8fdbe JQ |
658 | |
659 | lock_buffer(bh); | |
660 | /* | |
d984187e | 661 | * A previous transaction with a couple of buffer heads fail |
662 | * to checkpoint, so all the bhs are marked as BH_Write_EIO. | |
663 | * For current transaction, the bh is just among those error | |
664 | * bhs which previous transaction handle. We can't just clear | |
665 | * its BH_Write_EIO and reuse directly, since other bhs are | |
666 | * not written to disk yet and that will cause metadata | |
667 | * inconsistency. So we should set fs read-only to avoid | |
668 | * further damage. | |
acf8fdbe JQ |
669 | */ |
670 | if (buffer_write_io_error(bh) && !buffer_uptodate(bh)) { | |
acf8fdbe | 671 | unlock_buffer(bh); |
d984187e | 672 | return ocfs2_error(osb->sb, "A previous attempt to " |
673 | "write this buffer head failed\n"); | |
acf8fdbe JQ |
674 | } |
675 | unlock_buffer(bh); | |
ccd979bd MF |
676 | } |
677 | ||
0cf2f763 | 678 | /* Set the current transaction information on the ci so |
ccd979bd | 679 | * that the locking code knows whether it can drop it's locks |
0cf2f763 | 680 | * on this ci or not. We're protected from the commit |
ccd979bd MF |
681 | * thread updating the current transaction id until |
682 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
683 | * j_trans_barrier for us. */ | |
0cf2f763 | 684 | ocfs2_set_ci_lock_trans(osb->journal, ci); |
ccd979bd | 685 | |
0cf2f763 | 686 | ocfs2_metadata_cache_io_lock(ci); |
ccd979bd MF |
687 | switch (type) { |
688 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
689 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
2b4e30fb | 690 | status = jbd2_journal_get_write_access(handle, bh); |
ccd979bd MF |
691 | break; |
692 | ||
693 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
2b4e30fb | 694 | status = jbd2_journal_get_undo_access(handle, bh); |
ccd979bd MF |
695 | break; |
696 | ||
697 | default: | |
698 | status = -EINVAL; | |
af901ca1 | 699 | mlog(ML_ERROR, "Unknown access type!\n"); |
ccd979bd | 700 | } |
0cf2f763 | 701 | if (!status && ocfs2_meta_ecc(osb) && triggers) |
50655ae9 | 702 | jbd2_journal_set_triggers(bh, &triggers->ot_triggers); |
0cf2f763 | 703 | ocfs2_metadata_cache_io_unlock(ci); |
ccd979bd MF |
704 | |
705 | if (status < 0) | |
706 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
707 | status, type); | |
708 | ||
ccd979bd MF |
709 | return status; |
710 | } | |
711 | ||
0cf2f763 JB |
712 | int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, |
713 | struct buffer_head *bh, int type) | |
50655ae9 | 714 | { |
0cf2f763 | 715 | return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type); |
50655ae9 JB |
716 | } |
717 | ||
0cf2f763 | 718 | int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
719 | struct buffer_head *bh, int type) |
720 | { | |
0cf2f763 | 721 | return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type); |
50655ae9 JB |
722 | } |
723 | ||
93c97087 TM |
724 | int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, |
725 | struct buffer_head *bh, int type) | |
726 | { | |
727 | return __ocfs2_journal_access(handle, ci, bh, &rb_triggers, | |
728 | type); | |
729 | } | |
730 | ||
0cf2f763 | 731 | int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
732 | struct buffer_head *bh, int type) |
733 | { | |
0cf2f763 | 734 | return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type); |
50655ae9 JB |
735 | } |
736 | ||
0cf2f763 | 737 | int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
738 | struct buffer_head *bh, int type) |
739 | { | |
0cf2f763 | 740 | return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type); |
50655ae9 JB |
741 | } |
742 | ||
0cf2f763 | 743 | int ocfs2_journal_access_xb(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, &xb_triggers, type); |
50655ae9 JB |
747 | } |
748 | ||
0cf2f763 | 749 | int ocfs2_journal_access_dq(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, &dq_triggers, type); |
50655ae9 JB |
753 | } |
754 | ||
0cf2f763 | 755 | int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
756 | struct buffer_head *bh, int type) |
757 | { | |
0cf2f763 | 758 | return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type); |
9b7895ef MF |
759 | } |
760 | ||
0cf2f763 | 761 | int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
762 | struct buffer_head *bh, int type) |
763 | { | |
0cf2f763 | 764 | return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type); |
9b7895ef MF |
765 | } |
766 | ||
0cf2f763 | 767 | int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
768 | struct buffer_head *bh, int type) |
769 | { | |
0cf2f763 | 770 | return __ocfs2_journal_access(handle, ci, bh, NULL, type); |
50655ae9 JB |
771 | } |
772 | ||
ec20cec7 | 773 | void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) |
ccd979bd MF |
774 | { |
775 | int status; | |
776 | ||
b4107950 | 777 | trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr); |
ccd979bd | 778 | |
2b4e30fb | 779 | status = jbd2_journal_dirty_metadata(handle, bh); |
e272e7f0 JQ |
780 | if (status) { |
781 | mlog_errno(status); | |
782 | if (!is_handle_aborted(handle)) { | |
783 | journal_t *journal = handle->h_transaction->t_journal; | |
784 | struct super_block *sb = bh->b_bdev->bd_super; | |
785 | ||
786 | mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. " | |
787 | "Aborting transaction and journal.\n"); | |
788 | handle->h_err = status; | |
789 | jbd2_journal_abort_handle(handle); | |
790 | jbd2_journal_abort(journal, status); | |
791 | ocfs2_abort(sb, "Journal already aborted.\n"); | |
792 | } | |
793 | } | |
ccd979bd MF |
794 | } |
795 | ||
2b4e30fb | 796 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
ccd979bd MF |
797 | |
798 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
799 | { | |
800 | journal_t *journal = osb->journal->j_journal; | |
d147b3d6 MF |
801 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
802 | ||
803 | if (osb->osb_commit_interval) | |
804 | commit_interval = osb->osb_commit_interval; | |
ccd979bd | 805 | |
a931da6a | 806 | write_lock(&journal->j_state_lock); |
d147b3d6 | 807 | journal->j_commit_interval = commit_interval; |
ccd979bd | 808 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
2b4e30fb | 809 | journal->j_flags |= JBD2_BARRIER; |
ccd979bd | 810 | else |
2b4e30fb | 811 | journal->j_flags &= ~JBD2_BARRIER; |
a931da6a | 812 | write_unlock(&journal->j_state_lock); |
ccd979bd MF |
813 | } |
814 | ||
815 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
816 | { | |
817 | int status = -1; | |
818 | struct inode *inode = NULL; /* the journal inode */ | |
819 | journal_t *j_journal = NULL; | |
820 | struct ocfs2_dinode *di = NULL; | |
821 | struct buffer_head *bh = NULL; | |
822 | struct ocfs2_super *osb; | |
e63aecb6 | 823 | int inode_lock = 0; |
ccd979bd | 824 | |
ccd979bd MF |
825 | BUG_ON(!journal); |
826 | ||
827 | osb = journal->j_osb; | |
828 | ||
829 | /* already have the inode for our journal */ | |
830 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
831 | osb->slot_num); | |
832 | if (inode == NULL) { | |
833 | status = -EACCES; | |
834 | mlog_errno(status); | |
835 | goto done; | |
836 | } | |
837 | if (is_bad_inode(inode)) { | |
838 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
839 | iput(inode); | |
840 | inode = NULL; | |
841 | status = -EACCES; | |
842 | goto done; | |
843 | } | |
844 | ||
845 | SET_INODE_JOURNAL(inode); | |
846 | OCFS2_I(inode)->ip_open_count++; | |
847 | ||
6eff5790 MF |
848 | /* Skip recovery waits here - journal inode metadata never |
849 | * changes in a live cluster so it can be considered an | |
850 | * exception to the rule. */ | |
e63aecb6 | 851 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd MF |
852 | if (status < 0) { |
853 | if (status != -ERESTARTSYS) | |
854 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
855 | goto done; | |
856 | } | |
857 | ||
e63aecb6 | 858 | inode_lock = 1; |
ccd979bd MF |
859 | di = (struct ocfs2_dinode *)bh->b_data; |
860 | ||
f17c20dd | 861 | if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) { |
ccd979bd | 862 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", |
f17c20dd | 863 | i_size_read(inode)); |
ccd979bd MF |
864 | status = -EINVAL; |
865 | goto done; | |
866 | } | |
867 | ||
f17c20dd | 868 | trace_ocfs2_journal_init(i_size_read(inode), |
b4107950 TM |
869 | (unsigned long long)inode->i_blocks, |
870 | OCFS2_I(inode)->ip_clusters); | |
ccd979bd MF |
871 | |
872 | /* call the kernels journal init function now */ | |
2b4e30fb | 873 | j_journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
874 | if (j_journal == NULL) { |
875 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
876 | status = -EINVAL; | |
877 | goto done; | |
878 | } | |
879 | ||
ede7dc7f | 880 | trace_ocfs2_journal_init_maxlen(j_journal->j_total_len); |
ccd979bd MF |
881 | |
882 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
883 | OCFS2_JOURNAL_DIRTY_FL); | |
884 | ||
885 | journal->j_journal = j_journal; | |
342af94e MFO |
886 | journal->j_journal->j_submit_inode_data_buffers = |
887 | jbd2_journal_submit_inode_data_buffers; | |
888 | journal->j_journal->j_finish_inode_data_buffers = | |
889 | jbd2_journal_finish_inode_data_buffers; | |
ccd979bd MF |
890 | journal->j_inode = inode; |
891 | journal->j_bh = bh; | |
892 | ||
893 | ocfs2_set_journal_params(osb); | |
894 | ||
895 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
896 | ||
897 | status = 0; | |
898 | done: | |
899 | if (status < 0) { | |
e63aecb6 MF |
900 | if (inode_lock) |
901 | ocfs2_inode_unlock(inode, 1); | |
a81cb88b | 902 | brelse(bh); |
ccd979bd MF |
903 | if (inode) { |
904 | OCFS2_I(inode)->ip_open_count--; | |
905 | iput(inode); | |
906 | } | |
907 | } | |
908 | ||
ccd979bd MF |
909 | return status; |
910 | } | |
911 | ||
539d8264 SM |
912 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
913 | { | |
914 | le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); | |
915 | } | |
916 | ||
917 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) | |
918 | { | |
919 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); | |
920 | } | |
921 | ||
ccd979bd | 922 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 923 | int dirty, int replayed) |
ccd979bd MF |
924 | { |
925 | int status; | |
926 | unsigned int flags; | |
927 | struct ocfs2_journal *journal = osb->journal; | |
928 | struct buffer_head *bh = journal->j_bh; | |
929 | struct ocfs2_dinode *fe; | |
930 | ||
ccd979bd | 931 | fe = (struct ocfs2_dinode *)bh->b_data; |
10995aa2 JB |
932 | |
933 | /* The journal bh on the osb always comes from ocfs2_journal_init() | |
934 | * and was validated there inside ocfs2_inode_lock_full(). It's a | |
935 | * code bug if we mess it up. */ | |
936 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
ccd979bd MF |
937 | |
938 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
939 | if (dirty) | |
940 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
941 | else | |
942 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
943 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
944 | ||
539d8264 SM |
945 | if (replayed) |
946 | ocfs2_bump_recovery_generation(fe); | |
947 | ||
13723d00 | 948 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 949 | status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); |
ccd979bd MF |
950 | if (status < 0) |
951 | mlog_errno(status); | |
952 | ||
ccd979bd MF |
953 | return status; |
954 | } | |
955 | ||
956 | /* | |
957 | * If the journal has been kmalloc'd it needs to be freed after this | |
958 | * call. | |
959 | */ | |
960 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
961 | { | |
962 | struct ocfs2_journal *journal = NULL; | |
963 | int status = 0; | |
964 | struct inode *inode = NULL; | |
965 | int num_running_trans = 0; | |
966 | ||
ebdec83b | 967 | BUG_ON(!osb); |
ccd979bd MF |
968 | |
969 | journal = osb->journal; | |
970 | if (!journal) | |
971 | goto done; | |
972 | ||
973 | inode = journal->j_inode; | |
974 | ||
975 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
976 | goto done; | |
977 | ||
2b4e30fb | 978 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
ccd979bd MF |
979 | if (!igrab(inode)) |
980 | BUG(); | |
981 | ||
982 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
b4107950 | 983 | trace_ocfs2_journal_shutdown(num_running_trans); |
ccd979bd MF |
984 | |
985 | /* Do a commit_cache here. It will flush our journal, *and* | |
986 | * release any locks that are still held. | |
987 | * set the SHUTDOWN flag and release the trans lock. | |
988 | * the commit thread will take the trans lock for us below. */ | |
989 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
990 | ||
991 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
992 | * drop the trans_lock (which we want to hold until we | |
993 | * completely destroy the journal. */ | |
994 | if (osb->commit_task) { | |
995 | /* Wait for the commit thread */ | |
b4107950 | 996 | trace_ocfs2_journal_shutdown_wait(osb->commit_task); |
ccd979bd MF |
997 | kthread_stop(osb->commit_task); |
998 | osb->commit_task = NULL; | |
999 | } | |
1000 | ||
1001 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
1002 | ||
c271c5c2 | 1003 | if (ocfs2_mount_local(osb)) { |
2b4e30fb JB |
1004 | jbd2_journal_lock_updates(journal->j_journal); |
1005 | status = jbd2_journal_flush(journal->j_journal); | |
1006 | jbd2_journal_unlock_updates(journal->j_journal); | |
c271c5c2 SM |
1007 | if (status < 0) |
1008 | mlog_errno(status); | |
1009 | } | |
1010 | ||
d85400af JB |
1011 | /* Shutdown the kernel journal system */ |
1012 | if (!jbd2_journal_destroy(journal->j_journal) && !status) { | |
c271c5c2 SM |
1013 | /* |
1014 | * Do not toggle if flush was unsuccessful otherwise | |
1015 | * will leave dirty metadata in a "clean" journal | |
1016 | */ | |
539d8264 | 1017 | status = ocfs2_journal_toggle_dirty(osb, 0, 0); |
c271c5c2 SM |
1018 | if (status < 0) |
1019 | mlog_errno(status); | |
1020 | } | |
ae0dff68 | 1021 | journal->j_journal = NULL; |
ccd979bd MF |
1022 | |
1023 | OCFS2_I(inode)->ip_open_count--; | |
1024 | ||
1025 | /* unlock our journal */ | |
e63aecb6 | 1026 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1027 | |
1028 | brelse(journal->j_bh); | |
1029 | journal->j_bh = NULL; | |
1030 | ||
1031 | journal->j_state = OCFS2_JOURNAL_FREE; | |
1032 | ||
1033 | // up_write(&journal->j_trans_barrier); | |
1034 | done: | |
72865d92 | 1035 | iput(inode); |
ccd979bd MF |
1036 | } |
1037 | ||
1038 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
1039 | journal_t *journal, | |
1040 | int slot) | |
1041 | { | |
1042 | int olderr; | |
1043 | ||
2b4e30fb | 1044 | olderr = jbd2_journal_errno(journal); |
ccd979bd MF |
1045 | if (olderr) { |
1046 | mlog(ML_ERROR, "File system error %d recorded in " | |
1047 | "journal %u.\n", olderr, slot); | |
1048 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
1049 | sb->s_id); | |
1050 | ||
2b4e30fb JB |
1051 | jbd2_journal_ack_err(journal); |
1052 | jbd2_journal_clear_err(journal); | |
ccd979bd MF |
1053 | } |
1054 | } | |
1055 | ||
539d8264 | 1056 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
ccd979bd MF |
1057 | { |
1058 | int status = 0; | |
1059 | struct ocfs2_super *osb; | |
1060 | ||
b1f3550f | 1061 | BUG_ON(!journal); |
ccd979bd MF |
1062 | |
1063 | osb = journal->j_osb; | |
1064 | ||
2b4e30fb | 1065 | status = jbd2_journal_load(journal->j_journal); |
ccd979bd MF |
1066 | if (status < 0) { |
1067 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
1068 | goto done; | |
1069 | } | |
1070 | ||
1071 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
1072 | ||
397eac17 KL |
1073 | if (replayed) { |
1074 | jbd2_journal_lock_updates(journal->j_journal); | |
1075 | status = jbd2_journal_flush(journal->j_journal); | |
1076 | jbd2_journal_unlock_updates(journal->j_journal); | |
1077 | if (status < 0) | |
1078 | mlog_errno(status); | |
1079 | } | |
1080 | ||
539d8264 | 1081 | status = ocfs2_journal_toggle_dirty(osb, 1, replayed); |
ccd979bd MF |
1082 | if (status < 0) { |
1083 | mlog_errno(status); | |
1084 | goto done; | |
1085 | } | |
1086 | ||
1087 | /* Launch the commit thread */ | |
c271c5c2 SM |
1088 | if (!local) { |
1089 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, | |
5afc44e2 | 1090 | "ocfs2cmt-%s", osb->uuid_str); |
c271c5c2 SM |
1091 | if (IS_ERR(osb->commit_task)) { |
1092 | status = PTR_ERR(osb->commit_task); | |
1093 | osb->commit_task = NULL; | |
1094 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " | |
1095 | "error=%d", status); | |
1096 | goto done; | |
1097 | } | |
1098 | } else | |
ccd979bd | 1099 | osb->commit_task = NULL; |
ccd979bd MF |
1100 | |
1101 | done: | |
ccd979bd MF |
1102 | return status; |
1103 | } | |
1104 | ||
1105 | ||
1106 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
1107 | * mark the journal clean */ | |
1108 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
1109 | { | |
1110 | int status; | |
1111 | ||
ebdec83b | 1112 | BUG_ON(!journal); |
ccd979bd | 1113 | |
2b4e30fb | 1114 | status = jbd2_journal_wipe(journal->j_journal, full); |
ccd979bd MF |
1115 | if (status < 0) { |
1116 | mlog_errno(status); | |
1117 | goto bail; | |
1118 | } | |
1119 | ||
539d8264 | 1120 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); |
ccd979bd MF |
1121 | if (status < 0) |
1122 | mlog_errno(status); | |
1123 | ||
1124 | bail: | |
ccd979bd MF |
1125 | return status; |
1126 | } | |
1127 | ||
553abd04 JB |
1128 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1129 | { | |
1130 | int empty; | |
1131 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
1132 | ||
1133 | spin_lock(&osb->osb_lock); | |
1134 | empty = (rm->rm_used == 0); | |
1135 | spin_unlock(&osb->osb_lock); | |
1136 | ||
1137 | return empty; | |
1138 | } | |
1139 | ||
1140 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) | |
1141 | { | |
1142 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); | |
1143 | } | |
1144 | ||
ccd979bd MF |
1145 | /* |
1146 | * JBD Might read a cached version of another nodes journal file. We | |
1147 | * don't want this as this file changes often and we get no | |
1148 | * notification on those changes. The only way to be sure that we've | |
1149 | * got the most up to date version of those blocks then is to force | |
1150 | * read them off disk. Just searching through the buffer cache won't | |
1151 | * work as there may be pages backing this file which are still marked | |
1152 | * up to date. We know things can't change on this file underneath us | |
1153 | * as we have the lock by now :) | |
1154 | */ | |
1155 | static int ocfs2_force_read_journal(struct inode *inode) | |
1156 | { | |
1157 | int status = 0; | |
4f902c37 | 1158 | int i; |
8110b073 | 1159 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
0b492f68 JB |
1160 | struct buffer_head *bh = NULL; |
1161 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
ccd979bd | 1162 | |
f17c20dd | 1163 | num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode)); |
ccd979bd | 1164 | v_blkno = 0; |
8110b073 | 1165 | while (v_blkno < num_blocks) { |
ccd979bd | 1166 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
49cb8d2d | 1167 | &p_blkno, &p_blocks, NULL); |
ccd979bd MF |
1168 | if (status < 0) { |
1169 | mlog_errno(status); | |
1170 | goto bail; | |
1171 | } | |
1172 | ||
0b492f68 JB |
1173 | for (i = 0; i < p_blocks; i++, p_blkno++) { |
1174 | bh = __find_get_block(osb->sb->s_bdev, p_blkno, | |
1175 | osb->sb->s_blocksize); | |
1176 | /* block not cached. */ | |
1177 | if (!bh) | |
1178 | continue; | |
1179 | ||
1180 | brelse(bh); | |
1181 | bh = NULL; | |
1182 | /* We are reading journal data which should not | |
1183 | * be put in the uptodate cache. | |
1184 | */ | |
1185 | status = ocfs2_read_blocks_sync(osb, p_blkno, 1, &bh); | |
1186 | if (status < 0) { | |
1187 | mlog_errno(status); | |
1188 | goto bail; | |
1189 | } | |
1190 | ||
1191 | brelse(bh); | |
1192 | bh = NULL; | |
ccd979bd MF |
1193 | } |
1194 | ||
1195 | v_blkno += p_blocks; | |
1196 | } | |
1197 | ||
1198 | bail: | |
ccd979bd MF |
1199 | return status; |
1200 | } | |
1201 | ||
1202 | struct ocfs2_la_recovery_item { | |
1203 | struct list_head lri_list; | |
1204 | int lri_slot; | |
1205 | struct ocfs2_dinode *lri_la_dinode; | |
1206 | struct ocfs2_dinode *lri_tl_dinode; | |
2205363d | 1207 | struct ocfs2_quota_recovery *lri_qrec; |
ed460cff | 1208 | enum ocfs2_orphan_reco_type lri_orphan_reco_type; |
ccd979bd MF |
1209 | }; |
1210 | ||
1211 | /* Does the second half of the recovery process. By this point, the | |
1212 | * node is marked clean and can actually be considered recovered, | |
1213 | * hence it's no longer in the recovery map, but there's still some | |
1214 | * cleanup we can do which shouldn't happen within the recovery thread | |
1215 | * as locking in that context becomes very difficult if we are to take | |
1216 | * recovering nodes into account. | |
1217 | * | |
1218 | * NOTE: This function can and will sleep on recovery of other nodes | |
1219 | * during cluster locking, just like any other ocfs2 process. | |
1220 | */ | |
c4028958 | 1221 | void ocfs2_complete_recovery(struct work_struct *work) |
ccd979bd | 1222 | { |
b4107950 | 1223 | int ret = 0; |
c4028958 DH |
1224 | struct ocfs2_journal *journal = |
1225 | container_of(work, struct ocfs2_journal, j_recovery_work); | |
1226 | struct ocfs2_super *osb = journal->j_osb; | |
ccd979bd | 1227 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
800deef3 | 1228 | struct ocfs2_la_recovery_item *item, *n; |
2205363d | 1229 | struct ocfs2_quota_recovery *qrec; |
ed460cff | 1230 | enum ocfs2_orphan_reco_type orphan_reco_type; |
ccd979bd MF |
1231 | LIST_HEAD(tmp_la_list); |
1232 | ||
b4107950 TM |
1233 | trace_ocfs2_complete_recovery( |
1234 | (unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno); | |
ccd979bd MF |
1235 | |
1236 | spin_lock(&journal->j_lock); | |
1237 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
1238 | spin_unlock(&journal->j_lock); | |
1239 | ||
800deef3 | 1240 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
ccd979bd MF |
1241 | list_del_init(&item->lri_list); |
1242 | ||
19ece546 JK |
1243 | ocfs2_wait_on_quotas(osb); |
1244 | ||
ccd979bd | 1245 | la_dinode = item->lri_la_dinode; |
b4107950 TM |
1246 | tl_dinode = item->lri_tl_dinode; |
1247 | qrec = item->lri_qrec; | |
ed460cff | 1248 | orphan_reco_type = item->lri_orphan_reco_type; |
ccd979bd | 1249 | |
b4107950 TM |
1250 | trace_ocfs2_complete_recovery_slot(item->lri_slot, |
1251 | la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0, | |
1252 | tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0, | |
1253 | qrec); | |
1254 | ||
1255 | if (la_dinode) { | |
ccd979bd MF |
1256 | ret = ocfs2_complete_local_alloc_recovery(osb, |
1257 | la_dinode); | |
1258 | if (ret < 0) | |
1259 | mlog_errno(ret); | |
1260 | ||
1261 | kfree(la_dinode); | |
1262 | } | |
1263 | ||
ccd979bd | 1264 | if (tl_dinode) { |
ccd979bd MF |
1265 | ret = ocfs2_complete_truncate_log_recovery(osb, |
1266 | tl_dinode); | |
1267 | if (ret < 0) | |
1268 | mlog_errno(ret); | |
1269 | ||
1270 | kfree(tl_dinode); | |
1271 | } | |
1272 | ||
ed460cff JQ |
1273 | ret = ocfs2_recover_orphans(osb, item->lri_slot, |
1274 | orphan_reco_type); | |
ccd979bd MF |
1275 | if (ret < 0) |
1276 | mlog_errno(ret); | |
1277 | ||
2205363d | 1278 | if (qrec) { |
2205363d JK |
1279 | ret = ocfs2_finish_quota_recovery(osb, qrec, |
1280 | item->lri_slot); | |
1281 | if (ret < 0) | |
1282 | mlog_errno(ret); | |
1283 | /* Recovery info is already freed now */ | |
1284 | } | |
1285 | ||
ccd979bd MF |
1286 | kfree(item); |
1287 | } | |
1288 | ||
b4107950 | 1289 | trace_ocfs2_complete_recovery_end(ret); |
ccd979bd MF |
1290 | } |
1291 | ||
1292 | /* NOTE: This function always eats your references to la_dinode and | |
1293 | * tl_dinode, either manually on error, or by passing them to | |
1294 | * ocfs2_complete_recovery */ | |
1295 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
1296 | int slot_num, | |
1297 | struct ocfs2_dinode *la_dinode, | |
2205363d | 1298 | struct ocfs2_dinode *tl_dinode, |
ed460cff JQ |
1299 | struct ocfs2_quota_recovery *qrec, |
1300 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
ccd979bd MF |
1301 | { |
1302 | struct ocfs2_la_recovery_item *item; | |
1303 | ||
afae00ab | 1304 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
1305 | if (!item) { |
1306 | /* Though we wish to avoid it, we are in fact safe in | |
1307 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
1308 | * than capable of reclaiming unused space. */ | |
d787ab09 TG |
1309 | kfree(la_dinode); |
1310 | kfree(tl_dinode); | |
ccd979bd | 1311 | |
2205363d JK |
1312 | if (qrec) |
1313 | ocfs2_free_quota_recovery(qrec); | |
1314 | ||
ccd979bd MF |
1315 | mlog_errno(-ENOMEM); |
1316 | return; | |
1317 | } | |
1318 | ||
1319 | INIT_LIST_HEAD(&item->lri_list); | |
1320 | item->lri_la_dinode = la_dinode; | |
1321 | item->lri_slot = slot_num; | |
1322 | item->lri_tl_dinode = tl_dinode; | |
2205363d | 1323 | item->lri_qrec = qrec; |
ed460cff | 1324 | item->lri_orphan_reco_type = orphan_reco_type; |
ccd979bd MF |
1325 | |
1326 | spin_lock(&journal->j_lock); | |
1327 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
35ddf78e | 1328 | queue_work(journal->j_osb->ocfs2_wq, &journal->j_recovery_work); |
ccd979bd MF |
1329 | spin_unlock(&journal->j_lock); |
1330 | } | |
1331 | ||
1332 | /* Called by the mount code to queue recovery the last part of | |
9140db04 | 1333 | * recovery for it's own and offline slot(s). */ |
ccd979bd MF |
1334 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1335 | { | |
1336 | struct ocfs2_journal *journal = osb->journal; | |
1337 | ||
10b3dd76 SM |
1338 | if (ocfs2_is_hard_readonly(osb)) |
1339 | return; | |
1340 | ||
9140db04 SE |
1341 | /* No need to queue up our truncate_log as regular cleanup will catch |
1342 | * that */ | |
1343 | ocfs2_queue_recovery_completion(journal, osb->slot_num, | |
ed460cff JQ |
1344 | osb->local_alloc_copy, NULL, NULL, |
1345 | ORPHAN_NEED_TRUNCATE); | |
9140db04 | 1346 | ocfs2_schedule_truncate_log_flush(osb, 0); |
ccd979bd | 1347 | |
9140db04 | 1348 | osb->local_alloc_copy = NULL; |
9140db04 SE |
1349 | |
1350 | /* queue to recover orphan slots for all offline slots */ | |
1351 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
ed460cff | 1352 | ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); |
9140db04 | 1353 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1354 | } |
1355 | ||
2205363d JK |
1356 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1357 | { | |
1358 | if (osb->quota_rec) { | |
1359 | ocfs2_queue_recovery_completion(osb->journal, | |
1360 | osb->slot_num, | |
1361 | NULL, | |
1362 | NULL, | |
ed460cff JQ |
1363 | osb->quota_rec, |
1364 | ORPHAN_NEED_TRUNCATE); | |
2205363d JK |
1365 | osb->quota_rec = NULL; |
1366 | } | |
1367 | } | |
1368 | ||
ccd979bd MF |
1369 | static int __ocfs2_recovery_thread(void *arg) |
1370 | { | |
2205363d | 1371 | int status, node_num, slot_num; |
ccd979bd | 1372 | struct ocfs2_super *osb = arg; |
553abd04 | 1373 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
2205363d JK |
1374 | int *rm_quota = NULL; |
1375 | int rm_quota_used = 0, i; | |
1376 | struct ocfs2_quota_recovery *qrec; | |
ccd979bd | 1377 | |
21158ca8 G |
1378 | /* Whether the quota supported. */ |
1379 | int quota_enabled = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, | |
1380 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
1381 | || OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, | |
1382 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA); | |
1383 | ||
ccd979bd MF |
1384 | status = ocfs2_wait_on_mount(osb); |
1385 | if (status < 0) { | |
1386 | goto bail; | |
1387 | } | |
1388 | ||
21158ca8 G |
1389 | if (quota_enabled) { |
1390 | rm_quota = kcalloc(osb->max_slots, sizeof(int), GFP_NOFS); | |
1391 | if (!rm_quota) { | |
1392 | status = -ENOMEM; | |
1393 | goto bail; | |
1394 | } | |
2205363d | 1395 | } |
ccd979bd MF |
1396 | restart: |
1397 | status = ocfs2_super_lock(osb, 1); | |
1398 | if (status < 0) { | |
1399 | mlog_errno(status); | |
1400 | goto bail; | |
1401 | } | |
1402 | ||
9140db04 SE |
1403 | status = ocfs2_compute_replay_slots(osb); |
1404 | if (status < 0) | |
1405 | mlog_errno(status); | |
1406 | ||
1407 | /* queue recovery for our own slot */ | |
1408 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
ed460cff | 1409 | NULL, NULL, ORPHAN_NO_NEED_TRUNCATE); |
9140db04 | 1410 | |
553abd04 JB |
1411 | spin_lock(&osb->osb_lock); |
1412 | while (rm->rm_used) { | |
1413 | /* It's always safe to remove entry zero, as we won't | |
1414 | * clear it until ocfs2_recover_node() has succeeded. */ | |
1415 | node_num = rm->rm_entries[0]; | |
1416 | spin_unlock(&osb->osb_lock); | |
2205363d | 1417 | slot_num = ocfs2_node_num_to_slot(osb, node_num); |
b4107950 | 1418 | trace_ocfs2_recovery_thread_node(node_num, slot_num); |
2205363d JK |
1419 | if (slot_num == -ENOENT) { |
1420 | status = 0; | |
2205363d JK |
1421 | goto skip_recovery; |
1422 | } | |
2205363d JK |
1423 | |
1424 | /* It is a bit subtle with quota recovery. We cannot do it | |
1425 | * immediately because we have to obtain cluster locks from | |
1426 | * quota files and we also don't want to just skip it because | |
1427 | * then quota usage would be out of sync until some node takes | |
1428 | * the slot. So we remember which nodes need quota recovery | |
1429 | * and when everything else is done, we recover quotas. */ | |
21158ca8 G |
1430 | if (quota_enabled) { |
1431 | for (i = 0; i < rm_quota_used | |
1432 | && rm_quota[i] != slot_num; i++) | |
1433 | ; | |
1434 | ||
1435 | if (i == rm_quota_used) | |
1436 | rm_quota[rm_quota_used++] = slot_num; | |
1437 | } | |
2205363d JK |
1438 | |
1439 | status = ocfs2_recover_node(osb, node_num, slot_num); | |
1440 | skip_recovery: | |
553abd04 JB |
1441 | if (!status) { |
1442 | ocfs2_recovery_map_clear(osb, node_num); | |
1443 | } else { | |
ccd979bd MF |
1444 | mlog(ML_ERROR, |
1445 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1446 | status, node_num, | |
1447 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1448 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
ccd979bd MF |
1449 | } |
1450 | ||
553abd04 | 1451 | spin_lock(&osb->osb_lock); |
ccd979bd | 1452 | } |
553abd04 | 1453 | spin_unlock(&osb->osb_lock); |
b4107950 | 1454 | trace_ocfs2_recovery_thread_end(status); |
553abd04 | 1455 | |
539d8264 SM |
1456 | /* Refresh all journal recovery generations from disk */ |
1457 | status = ocfs2_check_journals_nolocks(osb); | |
1458 | status = (status == -EROFS) ? 0 : status; | |
1459 | if (status < 0) | |
1460 | mlog_errno(status); | |
1461 | ||
2205363d | 1462 | /* Now it is right time to recover quotas... We have to do this under |
25985edc | 1463 | * superblock lock so that no one can start using the slot (and crash) |
2205363d | 1464 | * before we recover it */ |
21158ca8 G |
1465 | if (quota_enabled) { |
1466 | for (i = 0; i < rm_quota_used; i++) { | |
1467 | qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); | |
1468 | if (IS_ERR(qrec)) { | |
1469 | status = PTR_ERR(qrec); | |
1470 | mlog_errno(status); | |
1471 | continue; | |
1472 | } | |
1473 | ocfs2_queue_recovery_completion(osb->journal, | |
1474 | rm_quota[i], | |
1475 | NULL, NULL, qrec, | |
1476 | ORPHAN_NEED_TRUNCATE); | |
2205363d | 1477 | } |
2205363d JK |
1478 | } |
1479 | ||
ccd979bd MF |
1480 | ocfs2_super_unlock(osb, 1); |
1481 | ||
9140db04 | 1482 | /* queue recovery for offline slots */ |
ed460cff | 1483 | ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); |
ccd979bd MF |
1484 | |
1485 | bail: | |
c74ec2f7 | 1486 | mutex_lock(&osb->recovery_lock); |
553abd04 | 1487 | if (!status && !ocfs2_recovery_completed(osb)) { |
c74ec2f7 | 1488 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1489 | goto restart; |
1490 | } | |
1491 | ||
9140db04 | 1492 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1493 | osb->recovery_thread_task = NULL; |
1494 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1495 | wake_up(&osb->recovery_event); | |
1496 | ||
c74ec2f7 | 1497 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1498 | |
21158ca8 G |
1499 | if (quota_enabled) |
1500 | kfree(rm_quota); | |
2205363d | 1501 | |
ccd979bd MF |
1502 | /* no one is callint kthread_stop() for us so the kthread() api |
1503 | * requires that we call do_exit(). And it isn't exported, but | |
1504 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1505 | complete_and_exit(NULL, status); | |
ccd979bd MF |
1506 | } |
1507 | ||
1508 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1509 | { | |
c74ec2f7 | 1510 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1511 | |
b4107950 TM |
1512 | trace_ocfs2_recovery_thread(node_num, osb->node_num, |
1513 | osb->disable_recovery, osb->recovery_thread_task, | |
1514 | osb->disable_recovery ? | |
1515 | -1 : ocfs2_recovery_map_set(osb, node_num)); | |
ccd979bd | 1516 | |
b4107950 TM |
1517 | if (osb->disable_recovery) |
1518 | goto out; | |
ccd979bd MF |
1519 | |
1520 | if (osb->recovery_thread_task) | |
1521 | goto out; | |
1522 | ||
1523 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
5afc44e2 | 1524 | "ocfs2rec-%s", osb->uuid_str); |
ccd979bd MF |
1525 | if (IS_ERR(osb->recovery_thread_task)) { |
1526 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1527 | osb->recovery_thread_task = NULL; | |
1528 | } | |
1529 | ||
1530 | out: | |
c74ec2f7 | 1531 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1532 | wake_up(&osb->recovery_event); |
ccd979bd MF |
1533 | } |
1534 | ||
539d8264 SM |
1535 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1536 | int slot_num, | |
1537 | struct buffer_head **bh, | |
1538 | struct inode **ret_inode) | |
1539 | { | |
1540 | int status = -EACCES; | |
1541 | struct inode *inode = NULL; | |
1542 | ||
1543 | BUG_ON(slot_num >= osb->max_slots); | |
1544 | ||
1545 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1546 | slot_num); | |
1547 | if (!inode || is_bad_inode(inode)) { | |
1548 | mlog_errno(status); | |
1549 | goto bail; | |
1550 | } | |
1551 | SET_INODE_JOURNAL(inode); | |
1552 | ||
b657c95c | 1553 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
539d8264 SM |
1554 | if (status < 0) { |
1555 | mlog_errno(status); | |
1556 | goto bail; | |
1557 | } | |
1558 | ||
1559 | status = 0; | |
1560 | ||
1561 | bail: | |
1562 | if (inode) { | |
1563 | if (status || !ret_inode) | |
1564 | iput(inode); | |
1565 | else | |
1566 | *ret_inode = inode; | |
1567 | } | |
1568 | return status; | |
1569 | } | |
1570 | ||
ccd979bd MF |
1571 | /* Does the actual journal replay and marks the journal inode as |
1572 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1573 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1574 | int node_num, | |
1575 | int slot_num) | |
1576 | { | |
1577 | int status; | |
1578 | int got_lock = 0; | |
1579 | unsigned int flags; | |
1580 | struct inode *inode = NULL; | |
1581 | struct ocfs2_dinode *fe; | |
1582 | journal_t *journal = NULL; | |
1583 | struct buffer_head *bh = NULL; | |
539d8264 | 1584 | u32 slot_reco_gen; |
ccd979bd | 1585 | |
539d8264 SM |
1586 | status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); |
1587 | if (status) { | |
ccd979bd MF |
1588 | mlog_errno(status); |
1589 | goto done; | |
1590 | } | |
539d8264 SM |
1591 | |
1592 | fe = (struct ocfs2_dinode *)bh->b_data; | |
1593 | slot_reco_gen = ocfs2_get_recovery_generation(fe); | |
1594 | brelse(bh); | |
1595 | bh = NULL; | |
1596 | ||
1597 | /* | |
1598 | * As the fs recovery is asynchronous, there is a small chance that | |
1599 | * another node mounted (and recovered) the slot before the recovery | |
1600 | * thread could get the lock. To handle that, we dirty read the journal | |
1601 | * inode for that slot to get the recovery generation. If it is | |
1602 | * different than what we expected, the slot has been recovered. | |
1603 | * If not, it needs recovery. | |
1604 | */ | |
1605 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { | |
b4107950 | 1606 | trace_ocfs2_replay_journal_recovered(slot_num, |
539d8264 SM |
1607 | osb->slot_recovery_generations[slot_num], slot_reco_gen); |
1608 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
1609 | status = -EBUSY; | |
ccd979bd MF |
1610 | goto done; |
1611 | } | |
539d8264 SM |
1612 | |
1613 | /* Continue with recovery as the journal has not yet been recovered */ | |
ccd979bd | 1614 | |
e63aecb6 | 1615 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd | 1616 | if (status < 0) { |
b4107950 | 1617 | trace_ocfs2_replay_journal_lock_err(status); |
ccd979bd MF |
1618 | if (status != -ERESTARTSYS) |
1619 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1620 | goto done; | |
1621 | } | |
1622 | got_lock = 1; | |
1623 | ||
1624 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1625 | ||
1626 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
539d8264 | 1627 | slot_reco_gen = ocfs2_get_recovery_generation(fe); |
ccd979bd MF |
1628 | |
1629 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
b4107950 | 1630 | trace_ocfs2_replay_journal_skip(node_num); |
539d8264 SM |
1631 | /* Refresh recovery generation for the slot */ |
1632 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
ccd979bd MF |
1633 | goto done; |
1634 | } | |
1635 | ||
9140db04 SE |
1636 | /* we need to run complete recovery for offline orphan slots */ |
1637 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1638 | ||
619c200d SM |
1639 | printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\ |
1640 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1641 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1642 | |
1643 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1644 | ||
1645 | status = ocfs2_force_read_journal(inode); | |
1646 | if (status < 0) { | |
1647 | mlog_errno(status); | |
1648 | goto done; | |
1649 | } | |
1650 | ||
2b4e30fb | 1651 | journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
1652 | if (journal == NULL) { |
1653 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1654 | status = -EIO; | |
1655 | goto done; | |
1656 | } | |
1657 | ||
2b4e30fb | 1658 | status = jbd2_journal_load(journal); |
ccd979bd MF |
1659 | if (status < 0) { |
1660 | mlog_errno(status); | |
1661 | if (!igrab(inode)) | |
1662 | BUG(); | |
2b4e30fb | 1663 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1664 | goto done; |
1665 | } | |
1666 | ||
1667 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1668 | ||
1669 | /* wipe the journal */ | |
2b4e30fb JB |
1670 | jbd2_journal_lock_updates(journal); |
1671 | status = jbd2_journal_flush(journal); | |
1672 | jbd2_journal_unlock_updates(journal); | |
ccd979bd MF |
1673 | if (status < 0) |
1674 | mlog_errno(status); | |
1675 | ||
1676 | /* This will mark the node clean */ | |
1677 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1678 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1679 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1680 | ||
539d8264 SM |
1681 | /* Increment recovery generation to indicate successful recovery */ |
1682 | ocfs2_bump_recovery_generation(fe); | |
1683 | osb->slot_recovery_generations[slot_num] = | |
1684 | ocfs2_get_recovery_generation(fe); | |
1685 | ||
13723d00 | 1686 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 1687 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); |
ccd979bd MF |
1688 | if (status < 0) |
1689 | mlog_errno(status); | |
1690 | ||
1691 | if (!igrab(inode)) | |
1692 | BUG(); | |
1693 | ||
2b4e30fb | 1694 | jbd2_journal_destroy(journal); |
ccd979bd | 1695 | |
619c200d SM |
1696 | printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\ |
1697 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1698 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1699 | done: |
1700 | /* drop the lock on this nodes journal */ | |
1701 | if (got_lock) | |
e63aecb6 | 1702 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1703 | |
72865d92 | 1704 | iput(inode); |
a81cb88b | 1705 | brelse(bh); |
ccd979bd | 1706 | |
ccd979bd MF |
1707 | return status; |
1708 | } | |
1709 | ||
1710 | /* | |
1711 | * Do the most important parts of node recovery: | |
1712 | * - Replay it's journal | |
1713 | * - Stamp a clean local allocator file | |
1714 | * - Stamp a clean truncate log | |
1715 | * - Mark the node clean | |
1716 | * | |
1717 | * If this function completes without error, a node in OCFS2 can be | |
1718 | * said to have been safely recovered. As a result, failure during the | |
1719 | * second part of a nodes recovery process (local alloc recovery) is | |
1720 | * far less concerning. | |
1721 | */ | |
1722 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 1723 | int node_num, int slot_num) |
ccd979bd MF |
1724 | { |
1725 | int status = 0; | |
ccd979bd MF |
1726 | struct ocfs2_dinode *la_copy = NULL; |
1727 | struct ocfs2_dinode *tl_copy = NULL; | |
1728 | ||
b4107950 | 1729 | trace_ocfs2_recover_node(node_num, slot_num, osb->node_num); |
ccd979bd MF |
1730 | |
1731 | /* Should not ever be called to recover ourselves -- in that | |
1732 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1733 | BUG_ON(osb->node_num == node_num); |
ccd979bd | 1734 | |
ccd979bd MF |
1735 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1736 | if (status < 0) { | |
539d8264 | 1737 | if (status == -EBUSY) { |
b4107950 | 1738 | trace_ocfs2_recover_node_skip(slot_num, node_num); |
539d8264 SM |
1739 | status = 0; |
1740 | goto done; | |
1741 | } | |
ccd979bd MF |
1742 | mlog_errno(status); |
1743 | goto done; | |
1744 | } | |
1745 | ||
1746 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1747 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1748 | if (status < 0) { | |
1749 | mlog_errno(status); | |
1750 | goto done; | |
1751 | } | |
1752 | ||
1753 | /* An error from begin_truncate_log_recovery is not | |
1754 | * serious enough to warrant halting the rest of | |
1755 | * recovery. */ | |
1756 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1757 | if (status < 0) | |
1758 | mlog_errno(status); | |
1759 | ||
1760 | /* Likewise, this would be a strange but ultimately not so | |
1761 | * harmful place to get an error... */ | |
8e8a4603 | 1762 | status = ocfs2_clear_slot(osb, slot_num); |
ccd979bd MF |
1763 | if (status < 0) |
1764 | mlog_errno(status); | |
1765 | ||
1766 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1767 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
ed460cff | 1768 | tl_copy, NULL, ORPHAN_NEED_TRUNCATE); |
ccd979bd MF |
1769 | |
1770 | status = 0; | |
1771 | done: | |
1772 | ||
ccd979bd MF |
1773 | return status; |
1774 | } | |
1775 | ||
1776 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1777 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1778 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1779 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1780 | int slot_num) | |
1781 | { | |
1782 | int status, flags; | |
1783 | struct inode *inode = NULL; | |
1784 | ||
1785 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1786 | slot_num); | |
1787 | if (inode == NULL) { | |
1788 | mlog(ML_ERROR, "access error\n"); | |
1789 | status = -EACCES; | |
1790 | goto bail; | |
1791 | } | |
1792 | if (is_bad_inode(inode)) { | |
1793 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1794 | iput(inode); | |
1795 | inode = NULL; | |
1796 | status = -EACCES; | |
1797 | goto bail; | |
1798 | } | |
1799 | SET_INODE_JOURNAL(inode); | |
1800 | ||
1801 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
e63aecb6 | 1802 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
ccd979bd MF |
1803 | if (status < 0) { |
1804 | if (status != -EAGAIN) | |
1805 | mlog_errno(status); | |
1806 | goto bail; | |
1807 | } | |
1808 | ||
e63aecb6 | 1809 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1810 | bail: |
72865d92 | 1811 | iput(inode); |
ccd979bd MF |
1812 | |
1813 | return status; | |
1814 | } | |
1815 | ||
1816 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1817 | * slot info struct has been updated from disk. */ | |
1818 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1819 | { | |
d85b20e4 JB |
1820 | unsigned int node_num; |
1821 | int status, i; | |
a1af7d15 | 1822 | u32 gen; |
539d8264 SM |
1823 | struct buffer_head *bh = NULL; |
1824 | struct ocfs2_dinode *di; | |
ccd979bd MF |
1825 | |
1826 | /* This is called with the super block cluster lock, so we | |
1827 | * know that the slot map can't change underneath us. */ | |
1828 | ||
d85b20e4 | 1829 | for (i = 0; i < osb->max_slots; i++) { |
539d8264 SM |
1830 | /* Read journal inode to get the recovery generation */ |
1831 | status = ocfs2_read_journal_inode(osb, i, &bh, NULL); | |
1832 | if (status) { | |
1833 | mlog_errno(status); | |
1834 | goto bail; | |
1835 | } | |
1836 | di = (struct ocfs2_dinode *)bh->b_data; | |
a1af7d15 | 1837 | gen = ocfs2_get_recovery_generation(di); |
539d8264 SM |
1838 | brelse(bh); |
1839 | bh = NULL; | |
1840 | ||
a1af7d15 MF |
1841 | spin_lock(&osb->osb_lock); |
1842 | osb->slot_recovery_generations[i] = gen; | |
1843 | ||
b4107950 TM |
1844 | trace_ocfs2_mark_dead_nodes(i, |
1845 | osb->slot_recovery_generations[i]); | |
539d8264 | 1846 | |
a1af7d15 MF |
1847 | if (i == osb->slot_num) { |
1848 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1849 | continue; |
a1af7d15 | 1850 | } |
d85b20e4 JB |
1851 | |
1852 | status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); | |
a1af7d15 MF |
1853 | if (status == -ENOENT) { |
1854 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1855 | continue; |
a1af7d15 | 1856 | } |
ccd979bd | 1857 | |
a1af7d15 MF |
1858 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1859 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1860 | continue; |
a1af7d15 | 1861 | } |
d85b20e4 | 1862 | spin_unlock(&osb->osb_lock); |
ccd979bd MF |
1863 | |
1864 | /* Ok, we have a slot occupied by another node which | |
1865 | * is not in the recovery map. We trylock his journal | |
1866 | * file here to test if he's alive. */ | |
1867 | status = ocfs2_trylock_journal(osb, i); | |
1868 | if (!status) { | |
1869 | /* Since we're called from mount, we know that | |
1870 | * the recovery thread can't race us on | |
1871 | * setting / checking the recovery bits. */ | |
1872 | ocfs2_recovery_thread(osb, node_num); | |
1873 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1874 | mlog_errno(status); | |
1875 | goto bail; | |
1876 | } | |
ccd979bd | 1877 | } |
ccd979bd MF |
1878 | |
1879 | status = 0; | |
1880 | bail: | |
ccd979bd MF |
1881 | return status; |
1882 | } | |
1883 | ||
83273932 SE |
1884 | /* |
1885 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some | |
1886 | * randomness to the timeout to minimize multple nodes firing the timer at the | |
1887 | * same time. | |
1888 | */ | |
1889 | static inline unsigned long ocfs2_orphan_scan_timeout(void) | |
1890 | { | |
1891 | unsigned long time; | |
1892 | ||
1893 | get_random_bytes(&time, sizeof(time)); | |
1894 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); | |
1895 | return msecs_to_jiffies(time); | |
1896 | } | |
1897 | ||
1898 | /* | |
1899 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for | |
1900 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This | |
1901 | * is done to catch any orphans that are left over in orphan directories. | |
1902 | * | |
a035bff6 SM |
1903 | * It scans all slots, even ones that are in use. It does so to handle the |
1904 | * case described below: | |
1905 | * | |
1906 | * Node 1 has an inode it was using. The dentry went away due to memory | |
1907 | * pressure. Node 1 closes the inode, but it's on the free list. The node | |
1908 | * has the open lock. | |
1909 | * Node 2 unlinks the inode. It grabs the dentry lock to notify others, | |
1910 | * but node 1 has no dentry and doesn't get the message. It trylocks the | |
1911 | * open lock, sees that another node has a PR, and does nothing. | |
1912 | * Later node 2 runs its orphan dir. It igets the inode, trylocks the | |
1913 | * open lock, sees the PR still, and does nothing. | |
1914 | * Basically, we have to trigger an orphan iput on node 1. The only way | |
1915 | * for this to happen is if node 1 runs node 2's orphan dir. | |
1916 | * | |
83273932 SE |
1917 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT |
1918 | * seconds. It gets an EX lock on os_lockres and checks sequence number | |
1919 | * stored in LVB. If the sequence number has changed, it means some other | |
1920 | * node has done the scan. This node skips the scan and tracks the | |
1921 | * sequence number. If the sequence number didn't change, it means a scan | |
1922 | * hasn't happened. The node queues a scan and increments the | |
1923 | * sequence number in the LVB. | |
1924 | */ | |
b519ea6d | 1925 | static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) |
83273932 SE |
1926 | { |
1927 | struct ocfs2_orphan_scan *os; | |
1928 | int status, i; | |
1929 | u32 seqno = 0; | |
1930 | ||
1931 | os = &osb->osb_orphan_scan; | |
1932 | ||
692684e1 SM |
1933 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
1934 | goto out; | |
1935 | ||
b4107950 TM |
1936 | trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno, |
1937 | atomic_read(&os->os_state)); | |
1938 | ||
df152c24 | 1939 | status = ocfs2_orphan_scan_lock(osb, &seqno); |
83273932 SE |
1940 | if (status < 0) { |
1941 | if (status != -EAGAIN) | |
1942 | mlog_errno(status); | |
1943 | goto out; | |
1944 | } | |
1945 | ||
692684e1 SM |
1946 | /* Do no queue the tasks if the volume is being umounted */ |
1947 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
1948 | goto unlock; | |
1949 | ||
83273932 SE |
1950 | if (os->os_seqno != seqno) { |
1951 | os->os_seqno = seqno; | |
1952 | goto unlock; | |
1953 | } | |
1954 | ||
1955 | for (i = 0; i < osb->max_slots; i++) | |
1956 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, | |
ed460cff | 1957 | NULL, ORPHAN_NO_NEED_TRUNCATE); |
83273932 SE |
1958 | /* |
1959 | * We queued a recovery on orphan slots, increment the sequence | |
1960 | * number and update LVB so other node will skip the scan for a while | |
1961 | */ | |
1962 | seqno++; | |
15633a22 | 1963 | os->os_count++; |
395627b0 | 1964 | os->os_scantime = ktime_get_seconds(); |
83273932 | 1965 | unlock: |
df152c24 | 1966 | ocfs2_orphan_scan_unlock(osb, seqno); |
83273932 | 1967 | out: |
b4107950 TM |
1968 | trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno, |
1969 | atomic_read(&os->os_state)); | |
83273932 SE |
1970 | return; |
1971 | } | |
1972 | ||
1973 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ | |
b519ea6d | 1974 | static void ocfs2_orphan_scan_work(struct work_struct *work) |
83273932 SE |
1975 | { |
1976 | struct ocfs2_orphan_scan *os; | |
1977 | struct ocfs2_super *osb; | |
1978 | ||
1979 | os = container_of(work, struct ocfs2_orphan_scan, | |
1980 | os_orphan_scan_work.work); | |
1981 | osb = os->os_osb; | |
1982 | ||
1983 | mutex_lock(&os->os_lock); | |
1984 | ocfs2_queue_orphan_scan(osb); | |
692684e1 | 1985 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) |
35ddf78e | 1986 | queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work, |
692684e1 | 1987 | ocfs2_orphan_scan_timeout()); |
83273932 SE |
1988 | mutex_unlock(&os->os_lock); |
1989 | } | |
1990 | ||
1991 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) | |
1992 | { | |
1993 | struct ocfs2_orphan_scan *os; | |
1994 | ||
1995 | os = &osb->osb_orphan_scan; | |
df152c24 SM |
1996 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { |
1997 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1998 | mutex_lock(&os->os_lock); | |
1999 | cancel_delayed_work(&os->os_orphan_scan_work); | |
2000 | mutex_unlock(&os->os_lock); | |
2001 | } | |
83273932 SE |
2002 | } |
2003 | ||
df152c24 | 2004 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
83273932 SE |
2005 | { |
2006 | struct ocfs2_orphan_scan *os; | |
2007 | ||
2008 | os = &osb->osb_orphan_scan; | |
2009 | os->os_osb = osb; | |
15633a22 | 2010 | os->os_count = 0; |
3211949f | 2011 | os->os_seqno = 0; |
83273932 | 2012 | mutex_init(&os->os_lock); |
df152c24 | 2013 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
8b712cd5 | 2014 | } |
83273932 | 2015 | |
8b712cd5 JM |
2016 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
2017 | { | |
2018 | struct ocfs2_orphan_scan *os; | |
2019 | ||
2020 | os = &osb->osb_orphan_scan; | |
395627b0 | 2021 | os->os_scantime = ktime_get_seconds(); |
df152c24 SM |
2022 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
2023 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
2024 | else { | |
2025 | atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); | |
35ddf78e | 2026 | queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work, |
40f165f4 | 2027 | ocfs2_orphan_scan_timeout()); |
df152c24 | 2028 | } |
83273932 SE |
2029 | } |
2030 | ||
5eae5b96 | 2031 | struct ocfs2_orphan_filldir_priv { |
3704412b | 2032 | struct dir_context ctx; |
5eae5b96 MF |
2033 | struct inode *head; |
2034 | struct ocfs2_super *osb; | |
30edc43c | 2035 | enum ocfs2_orphan_reco_type orphan_reco_type; |
5eae5b96 MF |
2036 | }; |
2037 | ||
ac7576f4 MS |
2038 | static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name, |
2039 | int name_len, loff_t pos, u64 ino, | |
2040 | unsigned type) | |
5eae5b96 | 2041 | { |
ac7576f4 MS |
2042 | struct ocfs2_orphan_filldir_priv *p = |
2043 | container_of(ctx, struct ocfs2_orphan_filldir_priv, ctx); | |
5eae5b96 MF |
2044 | struct inode *iter; |
2045 | ||
2046 | if (name_len == 1 && !strncmp(".", name, 1)) | |
2047 | return 0; | |
2048 | if (name_len == 2 && !strncmp("..", name, 2)) | |
2049 | return 0; | |
2050 | ||
30edc43c JQ |
2051 | /* do not include dio entry in case of orphan scan */ |
2052 | if ((p->orphan_reco_type == ORPHAN_NO_NEED_TRUNCATE) && | |
2053 | (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, | |
2054 | OCFS2_DIO_ORPHAN_PREFIX_LEN))) | |
2055 | return 0; | |
2056 | ||
5eae5b96 MF |
2057 | /* Skip bad inodes so that recovery can continue */ |
2058 | iter = ocfs2_iget(p->osb, ino, | |
5fa0613e | 2059 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); |
5eae5b96 MF |
2060 | if (IS_ERR(iter)) |
2061 | return 0; | |
2062 | ||
93d911fc JQ |
2063 | if (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, |
2064 | OCFS2_DIO_ORPHAN_PREFIX_LEN)) | |
2065 | OCFS2_I(iter)->ip_flags |= OCFS2_INODE_DIO_ORPHAN_ENTRY; | |
2066 | ||
ed460cff JQ |
2067 | /* Skip inodes which are already added to recover list, since dio may |
2068 | * happen concurrently with unlink/rename */ | |
2069 | if (OCFS2_I(iter)->ip_next_orphan) { | |
2070 | iput(iter); | |
2071 | return 0; | |
2072 | } | |
2073 | ||
b4107950 | 2074 | trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno); |
5eae5b96 MF |
2075 | /* No locking is required for the next_orphan queue as there |
2076 | * is only ever a single process doing orphan recovery. */ | |
2077 | OCFS2_I(iter)->ip_next_orphan = p->head; | |
2078 | p->head = iter; | |
2079 | ||
2080 | return 0; | |
2081 | } | |
2082 | ||
b4df6ed8 MF |
2083 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
2084 | int slot, | |
30edc43c JQ |
2085 | struct inode **head, |
2086 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
ccd979bd | 2087 | { |
b4df6ed8 | 2088 | int status; |
ccd979bd | 2089 | struct inode *orphan_dir_inode = NULL; |
3704412b AV |
2090 | struct ocfs2_orphan_filldir_priv priv = { |
2091 | .ctx.actor = ocfs2_orphan_filldir, | |
2092 | .osb = osb, | |
30edc43c JQ |
2093 | .head = *head, |
2094 | .orphan_reco_type = orphan_reco_type | |
3704412b | 2095 | }; |
ccd979bd MF |
2096 | |
2097 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2098 | ORPHAN_DIR_SYSTEM_INODE, | |
2099 | slot); | |
2100 | if (!orphan_dir_inode) { | |
2101 | status = -ENOENT; | |
2102 | mlog_errno(status); | |
b4df6ed8 | 2103 | return status; |
2bd63216 | 2104 | } |
ccd979bd | 2105 | |
5955102c | 2106 | inode_lock(orphan_dir_inode); |
e63aecb6 | 2107 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
ccd979bd | 2108 | if (status < 0) { |
ccd979bd MF |
2109 | mlog_errno(status); |
2110 | goto out; | |
2111 | } | |
ccd979bd | 2112 | |
3704412b | 2113 | status = ocfs2_dir_foreach(orphan_dir_inode, &priv.ctx); |
5eae5b96 MF |
2114 | if (status) { |
2115 | mlog_errno(status); | |
a86370fb | 2116 | goto out_cluster; |
ccd979bd | 2117 | } |
ccd979bd | 2118 | |
5eae5b96 MF |
2119 | *head = priv.head; |
2120 | ||
a86370fb | 2121 | out_cluster: |
e63aecb6 | 2122 | ocfs2_inode_unlock(orphan_dir_inode, 0); |
b4df6ed8 | 2123 | out: |
5955102c | 2124 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2125 | iput(orphan_dir_inode); |
b4df6ed8 MF |
2126 | return status; |
2127 | } | |
2128 | ||
2129 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
2130 | int slot) | |
2131 | { | |
2132 | int ret; | |
2133 | ||
2134 | spin_lock(&osb->osb_lock); | |
2135 | ret = !osb->osb_orphan_wipes[slot]; | |
2136 | spin_unlock(&osb->osb_lock); | |
2137 | return ret; | |
2138 | } | |
2139 | ||
2140 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
2141 | int slot) | |
2142 | { | |
2143 | spin_lock(&osb->osb_lock); | |
2144 | /* Mark ourselves such that new processes in delete_inode() | |
2145 | * know to quit early. */ | |
2146 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2147 | while (osb->osb_orphan_wipes[slot]) { | |
2148 | /* If any processes are already in the middle of an | |
2149 | * orphan wipe on this dir, then we need to wait for | |
2150 | * them. */ | |
2151 | spin_unlock(&osb->osb_lock); | |
2152 | wait_event_interruptible(osb->osb_wipe_event, | |
2153 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
2154 | spin_lock(&osb->osb_lock); | |
2155 | } | |
2156 | spin_unlock(&osb->osb_lock); | |
2157 | } | |
2158 | ||
2159 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
2160 | int slot) | |
2161 | { | |
2162 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2163 | } | |
2164 | ||
2165 | /* | |
2166 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
2167 | * must run during recovery. Our strategy here is to build a list of | |
2168 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
2169 | * (most) of the rest of the work. | |
2170 | * | |
2171 | * Orphan recovery can happen at any time, not just mount so we have a | |
2172 | * couple of extra considerations. | |
2173 | * | |
2174 | * - We grab as many inodes as we can under the orphan dir lock - | |
2175 | * doing iget() outside the orphan dir risks getting a reference on | |
2176 | * an invalid inode. | |
2177 | * - We must be sure not to deadlock with other processes on the | |
2178 | * system wanting to run delete_inode(). This can happen when they go | |
2179 | * to lock the orphan dir and the orphan recovery process attempts to | |
2180 | * iget() inside the orphan dir lock. This can be avoided by | |
2181 | * advertising our state to ocfs2_delete_inode(). | |
2182 | */ | |
2183 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
ed460cff JQ |
2184 | int slot, |
2185 | enum ocfs2_orphan_reco_type orphan_reco_type) | |
b4df6ed8 MF |
2186 | { |
2187 | int ret = 0; | |
2188 | struct inode *inode = NULL; | |
2189 | struct inode *iter; | |
2190 | struct ocfs2_inode_info *oi; | |
cf1776a9 JQ |
2191 | struct buffer_head *di_bh = NULL; |
2192 | struct ocfs2_dinode *di = NULL; | |
b4df6ed8 | 2193 | |
b4107950 | 2194 | trace_ocfs2_recover_orphans(slot); |
b4df6ed8 MF |
2195 | |
2196 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
30edc43c | 2197 | ret = ocfs2_queue_orphans(osb, slot, &inode, orphan_reco_type); |
b4df6ed8 MF |
2198 | ocfs2_clear_recovering_orphan_dir(osb, slot); |
2199 | ||
2200 | /* Error here should be noted, but we want to continue with as | |
2201 | * many queued inodes as we've got. */ | |
2202 | if (ret) | |
2203 | mlog_errno(ret); | |
ccd979bd MF |
2204 | |
2205 | while (inode) { | |
2206 | oi = OCFS2_I(inode); | |
b4107950 TM |
2207 | trace_ocfs2_recover_orphans_iput( |
2208 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
2209 | |
2210 | iter = oi->ip_next_orphan; | |
ed460cff | 2211 | oi->ip_next_orphan = NULL; |
ccd979bd | 2212 | |
93d911fc | 2213 | if (oi->ip_flags & OCFS2_INODE_DIO_ORPHAN_ENTRY) { |
5955102c | 2214 | inode_lock(inode); |
93d911fc JQ |
2215 | ret = ocfs2_rw_lock(inode, 1); |
2216 | if (ret < 0) { | |
2217 | mlog_errno(ret); | |
2218 | goto unlock_mutex; | |
2219 | } | |
2220 | /* | |
2221 | * We need to take and drop the inode lock to | |
2222 | * force read inode from disk. | |
2223 | */ | |
2224 | ret = ocfs2_inode_lock(inode, &di_bh, 1); | |
2225 | if (ret) { | |
2226 | mlog_errno(ret); | |
2227 | goto unlock_rw; | |
2228 | } | |
2229 | ||
2230 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2231 | ||
2232 | if (di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)) { | |
2233 | ret = ocfs2_truncate_file(inode, di_bh, | |
2234 | i_size_read(inode)); | |
2235 | if (ret < 0) { | |
2236 | if (ret != -ENOSPC) | |
2237 | mlog_errno(ret); | |
2238 | goto unlock_inode; | |
2239 | } | |
cf1776a9 | 2240 | |
93d911fc JQ |
2241 | ret = ocfs2_del_inode_from_orphan(osb, inode, |
2242 | di_bh, 0, 0); | |
2243 | if (ret) | |
2244 | mlog_errno(ret); | |
2245 | } | |
2246 | unlock_inode: | |
2247 | ocfs2_inode_unlock(inode, 1); | |
2248 | brelse(di_bh); | |
2249 | di_bh = NULL; | |
2250 | unlock_rw: | |
2251 | ocfs2_rw_unlock(inode, 1); | |
2252 | unlock_mutex: | |
5955102c | 2253 | inode_unlock(inode); |
ed460cff | 2254 | |
93d911fc JQ |
2255 | /* clear dio flag in ocfs2_inode_info */ |
2256 | oi->ip_flags &= ~OCFS2_INODE_DIO_ORPHAN_ENTRY; | |
2257 | } else { | |
ed460cff JQ |
2258 | spin_lock(&oi->ip_lock); |
2259 | /* Set the proper information to get us going into | |
2260 | * ocfs2_delete_inode. */ | |
2261 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
2262 | spin_unlock(&oi->ip_lock); | |
ad694821 JQ |
2263 | } |
2264 | ||
ccd979bd | 2265 | iput(inode); |
ccd979bd MF |
2266 | inode = iter; |
2267 | } | |
2268 | ||
b4df6ed8 | 2269 | return ret; |
ccd979bd MF |
2270 | } |
2271 | ||
19ece546 | 2272 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
ccd979bd MF |
2273 | { |
2274 | /* This check is good because ocfs2 will wait on our recovery | |
2275 | * thread before changing it to something other than MOUNTED | |
2276 | * or DISABLED. */ | |
2277 | wait_event(osb->osb_mount_event, | |
19ece546 JK |
2278 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2279 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || | |
ccd979bd MF |
2280 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2281 | ||
2282 | /* If there's an error on mount, then we may never get to the | |
2283 | * MOUNTED flag, but this is set right before | |
2284 | * dismount_volume() so we can trust it. */ | |
2285 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
b4107950 | 2286 | trace_ocfs2_wait_on_mount(VOLUME_DISABLED); |
ccd979bd MF |
2287 | mlog(0, "mount error, exiting!\n"); |
2288 | return -EBUSY; | |
2289 | } | |
2290 | ||
2291 | return 0; | |
2292 | } | |
2293 | ||
2294 | static int ocfs2_commit_thread(void *arg) | |
2295 | { | |
2296 | int status; | |
2297 | struct ocfs2_super *osb = arg; | |
2298 | struct ocfs2_journal *journal = osb->journal; | |
2299 | ||
2300 | /* we can trust j_num_trans here because _should_stop() is only set in | |
2301 | * shutdown and nobody other than ourselves should be able to start | |
2302 | * transactions. committing on shutdown might take a few iterations | |
2303 | * as final transactions put deleted inodes on the list */ | |
2304 | while (!(kthread_should_stop() && | |
2305 | atomic_read(&journal->j_num_trans) == 0)) { | |
2306 | ||
745ae8ba MF |
2307 | wait_event_interruptible(osb->checkpoint_event, |
2308 | atomic_read(&journal->j_num_trans) | |
2309 | || kthread_should_stop()); | |
ccd979bd MF |
2310 | |
2311 | status = ocfs2_commit_cache(osb); | |
55b465b6 JQ |
2312 | if (status < 0) { |
2313 | static unsigned long abort_warn_time; | |
2314 | ||
2315 | /* Warn about this once per minute */ | |
2316 | if (printk_timed_ratelimit(&abort_warn_time, 60*HZ)) | |
2317 | mlog(ML_ERROR, "status = %d, journal is " | |
2318 | "already aborted.\n", status); | |
2319 | /* | |
2320 | * After ocfs2_commit_cache() fails, j_num_trans has a | |
2321 | * non-zero value. Sleep here to avoid a busy-wait | |
2322 | * loop. | |
2323 | */ | |
2324 | msleep_interruptible(1000); | |
2325 | } | |
ccd979bd MF |
2326 | |
2327 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
2328 | mlog(ML_KTHREAD, | |
2329 | "commit_thread: %u transactions pending on " | |
2330 | "shutdown\n", | |
2331 | atomic_read(&journal->j_num_trans)); | |
2332 | } | |
2333 | } | |
2334 | ||
2335 | return 0; | |
2336 | } | |
2337 | ||
539d8264 SM |
2338 | /* Reads all the journal inodes without taking any cluster locks. Used |
2339 | * for hard readonly access to determine whether any journal requires | |
2340 | * recovery. Also used to refresh the recovery generation numbers after | |
2341 | * a journal has been recovered by another node. | |
2342 | */ | |
ccd979bd MF |
2343 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2344 | { | |
2345 | int ret = 0; | |
2346 | unsigned int slot; | |
539d8264 | 2347 | struct buffer_head *di_bh = NULL; |
ccd979bd | 2348 | struct ocfs2_dinode *di; |
539d8264 | 2349 | int journal_dirty = 0; |
ccd979bd MF |
2350 | |
2351 | for(slot = 0; slot < osb->max_slots; slot++) { | |
539d8264 SM |
2352 | ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); |
2353 | if (ret) { | |
ccd979bd MF |
2354 | mlog_errno(ret); |
2355 | goto out; | |
2356 | } | |
2357 | ||
2358 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2359 | ||
539d8264 SM |
2360 | osb->slot_recovery_generations[slot] = |
2361 | ocfs2_get_recovery_generation(di); | |
2362 | ||
ccd979bd MF |
2363 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2364 | OCFS2_JOURNAL_DIRTY_FL) | |
539d8264 | 2365 | journal_dirty = 1; |
ccd979bd MF |
2366 | |
2367 | brelse(di_bh); | |
539d8264 | 2368 | di_bh = NULL; |
ccd979bd MF |
2369 | } |
2370 | ||
2371 | out: | |
539d8264 SM |
2372 | if (journal_dirty) |
2373 | ret = -EROFS; | |
ccd979bd MF |
2374 | return ret; |
2375 | } |