Commit | Line | Data |
---|---|---|
ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * journal.c | |
5 | * | |
6 | * Defines functions of journalling api | |
7 | * | |
8 | * Copyright (C) 2003, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/fs.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/highmem.h> | |
30 | #include <linux/kthread.h> | |
83273932 SE |
31 | #include <linux/time.h> |
32 | #include <linux/random.h> | |
ccd979bd MF |
33 | |
34 | #define MLOG_MASK_PREFIX ML_JOURNAL | |
35 | #include <cluster/masklog.h> | |
36 | ||
37 | #include "ocfs2.h" | |
38 | ||
39 | #include "alloc.h" | |
50655ae9 | 40 | #include "blockcheck.h" |
316f4b9f | 41 | #include "dir.h" |
ccd979bd MF |
42 | #include "dlmglue.h" |
43 | #include "extent_map.h" | |
44 | #include "heartbeat.h" | |
45 | #include "inode.h" | |
46 | #include "journal.h" | |
47 | #include "localalloc.h" | |
ccd979bd MF |
48 | #include "slot_map.h" |
49 | #include "super.h" | |
ccd979bd | 50 | #include "sysfile.h" |
2205363d | 51 | #include "quota.h" |
ccd979bd MF |
52 | |
53 | #include "buffer_head_io.h" | |
54 | ||
34af946a | 55 | DEFINE_SPINLOCK(trans_inc_lock); |
ccd979bd | 56 | |
83273932 SE |
57 | #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 |
58 | ||
ccd979bd MF |
59 | static int ocfs2_force_read_journal(struct inode *inode); |
60 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 61 | int node_num, int slot_num); |
ccd979bd MF |
62 | static int __ocfs2_recovery_thread(void *arg); |
63 | static int ocfs2_commit_cache(struct ocfs2_super *osb); | |
19ece546 | 64 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); |
ccd979bd | 65 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 66 | int dirty, int replayed); |
ccd979bd MF |
67 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
68 | int slot_num); | |
69 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
70 | int slot); | |
71 | static int ocfs2_commit_thread(void *arg); | |
9140db04 SE |
72 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
73 | int slot_num, | |
74 | struct ocfs2_dinode *la_dinode, | |
75 | struct ocfs2_dinode *tl_dinode, | |
76 | struct ocfs2_quota_recovery *qrec); | |
ccd979bd | 77 | |
19ece546 JK |
78 | static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) |
79 | { | |
80 | return __ocfs2_wait_on_mount(osb, 0); | |
81 | } | |
82 | ||
83 | static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) | |
84 | { | |
85 | return __ocfs2_wait_on_mount(osb, 1); | |
86 | } | |
87 | ||
9140db04 SE |
88 | /* |
89 | * This replay_map is to track online/offline slots, so we could recover | |
90 | * offline slots during recovery and mount | |
91 | */ | |
92 | ||
93 | enum ocfs2_replay_state { | |
94 | REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ | |
95 | REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ | |
96 | REPLAY_DONE /* Replay was already queued */ | |
97 | }; | |
98 | ||
99 | struct ocfs2_replay_map { | |
100 | unsigned int rm_slots; | |
101 | enum ocfs2_replay_state rm_state; | |
102 | unsigned char rm_replay_slots[0]; | |
103 | }; | |
104 | ||
105 | void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) | |
106 | { | |
107 | if (!osb->replay_map) | |
108 | return; | |
109 | ||
110 | /* If we've already queued the replay, we don't have any more to do */ | |
111 | if (osb->replay_map->rm_state == REPLAY_DONE) | |
112 | return; | |
113 | ||
114 | osb->replay_map->rm_state = state; | |
115 | } | |
116 | ||
117 | int ocfs2_compute_replay_slots(struct ocfs2_super *osb) | |
118 | { | |
119 | struct ocfs2_replay_map *replay_map; | |
120 | int i, node_num; | |
121 | ||
122 | /* If replay map is already set, we don't do it again */ | |
123 | if (osb->replay_map) | |
124 | return 0; | |
125 | ||
126 | replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + | |
127 | (osb->max_slots * sizeof(char)), GFP_KERNEL); | |
128 | ||
129 | if (!replay_map) { | |
130 | mlog_errno(-ENOMEM); | |
131 | return -ENOMEM; | |
132 | } | |
133 | ||
134 | spin_lock(&osb->osb_lock); | |
135 | ||
136 | replay_map->rm_slots = osb->max_slots; | |
137 | replay_map->rm_state = REPLAY_UNNEEDED; | |
138 | ||
139 | /* set rm_replay_slots for offline slot(s) */ | |
140 | for (i = 0; i < replay_map->rm_slots; i++) { | |
141 | if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT) | |
142 | replay_map->rm_replay_slots[i] = 1; | |
143 | } | |
144 | ||
145 | osb->replay_map = replay_map; | |
146 | spin_unlock(&osb->osb_lock); | |
147 | return 0; | |
148 | } | |
149 | ||
150 | void ocfs2_queue_replay_slots(struct ocfs2_super *osb) | |
151 | { | |
152 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
153 | int i; | |
154 | ||
155 | if (!replay_map) | |
156 | return; | |
157 | ||
158 | if (replay_map->rm_state != REPLAY_NEEDED) | |
159 | return; | |
160 | ||
161 | for (i = 0; i < replay_map->rm_slots; i++) | |
162 | if (replay_map->rm_replay_slots[i]) | |
163 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, | |
164 | NULL, NULL); | |
165 | replay_map->rm_state = REPLAY_DONE; | |
166 | } | |
167 | ||
168 | void ocfs2_free_replay_slots(struct ocfs2_super *osb) | |
169 | { | |
170 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
171 | ||
172 | if (!osb->replay_map) | |
173 | return; | |
174 | ||
175 | kfree(replay_map); | |
176 | osb->replay_map = NULL; | |
177 | } | |
178 | ||
553abd04 JB |
179 | int ocfs2_recovery_init(struct ocfs2_super *osb) |
180 | { | |
181 | struct ocfs2_recovery_map *rm; | |
182 | ||
183 | mutex_init(&osb->recovery_lock); | |
184 | osb->disable_recovery = 0; | |
185 | osb->recovery_thread_task = NULL; | |
186 | init_waitqueue_head(&osb->recovery_event); | |
187 | ||
188 | rm = kzalloc(sizeof(struct ocfs2_recovery_map) + | |
189 | osb->max_slots * sizeof(unsigned int), | |
190 | GFP_KERNEL); | |
191 | if (!rm) { | |
192 | mlog_errno(-ENOMEM); | |
193 | return -ENOMEM; | |
194 | } | |
195 | ||
196 | rm->rm_entries = (unsigned int *)((char *)rm + | |
197 | sizeof(struct ocfs2_recovery_map)); | |
198 | osb->recovery_map = rm; | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
204 | * memory barriers to make sure that we'll see the null task before | |
205 | * being woken up */ | |
206 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
207 | { | |
208 | mb(); | |
209 | return osb->recovery_thread_task != NULL; | |
210 | } | |
211 | ||
212 | void ocfs2_recovery_exit(struct ocfs2_super *osb) | |
213 | { | |
214 | struct ocfs2_recovery_map *rm; | |
215 | ||
216 | /* disable any new recovery threads and wait for any currently | |
217 | * running ones to exit. Do this before setting the vol_state. */ | |
218 | mutex_lock(&osb->recovery_lock); | |
219 | osb->disable_recovery = 1; | |
220 | mutex_unlock(&osb->recovery_lock); | |
221 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); | |
222 | ||
223 | /* At this point, we know that no more recovery threads can be | |
224 | * launched, so wait for any recovery completion work to | |
225 | * complete. */ | |
226 | flush_workqueue(ocfs2_wq); | |
227 | ||
228 | /* | |
229 | * Now that recovery is shut down, and the osb is about to be | |
230 | * freed, the osb_lock is not taken here. | |
231 | */ | |
232 | rm = osb->recovery_map; | |
233 | /* XXX: Should we bug if there are dirty entries? */ | |
234 | ||
235 | kfree(rm); | |
236 | } | |
237 | ||
238 | static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, | |
239 | unsigned int node_num) | |
240 | { | |
241 | int i; | |
242 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
243 | ||
244 | assert_spin_locked(&osb->osb_lock); | |
245 | ||
246 | for (i = 0; i < rm->rm_used; i++) { | |
247 | if (rm->rm_entries[i] == node_num) | |
248 | return 1; | |
249 | } | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | /* Behaves like test-and-set. Returns the previous value */ | |
255 | static int ocfs2_recovery_map_set(struct ocfs2_super *osb, | |
256 | unsigned int node_num) | |
257 | { | |
258 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
259 | ||
260 | spin_lock(&osb->osb_lock); | |
261 | if (__ocfs2_recovery_map_test(osb, node_num)) { | |
262 | spin_unlock(&osb->osb_lock); | |
263 | return 1; | |
264 | } | |
265 | ||
266 | /* XXX: Can this be exploited? Not from o2dlm... */ | |
267 | BUG_ON(rm->rm_used >= osb->max_slots); | |
268 | ||
269 | rm->rm_entries[rm->rm_used] = node_num; | |
270 | rm->rm_used++; | |
271 | spin_unlock(&osb->osb_lock); | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, | |
277 | unsigned int node_num) | |
278 | { | |
279 | int i; | |
280 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
281 | ||
282 | spin_lock(&osb->osb_lock); | |
283 | ||
284 | for (i = 0; i < rm->rm_used; i++) { | |
285 | if (rm->rm_entries[i] == node_num) | |
286 | break; | |
287 | } | |
288 | ||
289 | if (i < rm->rm_used) { | |
290 | /* XXX: be careful with the pointer math */ | |
291 | memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), | |
292 | (rm->rm_used - i - 1) * sizeof(unsigned int)); | |
293 | rm->rm_used--; | |
294 | } | |
295 | ||
296 | spin_unlock(&osb->osb_lock); | |
297 | } | |
298 | ||
ccd979bd MF |
299 | static int ocfs2_commit_cache(struct ocfs2_super *osb) |
300 | { | |
301 | int status = 0; | |
302 | unsigned int flushed; | |
303 | unsigned long old_id; | |
304 | struct ocfs2_journal *journal = NULL; | |
305 | ||
306 | mlog_entry_void(); | |
307 | ||
308 | journal = osb->journal; | |
309 | ||
310 | /* Flush all pending commits and checkpoint the journal. */ | |
311 | down_write(&journal->j_trans_barrier); | |
312 | ||
313 | if (atomic_read(&journal->j_num_trans) == 0) { | |
314 | up_write(&journal->j_trans_barrier); | |
315 | mlog(0, "No transactions for me to flush!\n"); | |
316 | goto finally; | |
317 | } | |
318 | ||
2b4e30fb JB |
319 | jbd2_journal_lock_updates(journal->j_journal); |
320 | status = jbd2_journal_flush(journal->j_journal); | |
321 | jbd2_journal_unlock_updates(journal->j_journal); | |
ccd979bd MF |
322 | if (status < 0) { |
323 | up_write(&journal->j_trans_barrier); | |
324 | mlog_errno(status); | |
325 | goto finally; | |
326 | } | |
327 | ||
328 | old_id = ocfs2_inc_trans_id(journal); | |
329 | ||
330 | flushed = atomic_read(&journal->j_num_trans); | |
331 | atomic_set(&journal->j_num_trans, 0); | |
332 | up_write(&journal->j_trans_barrier); | |
333 | ||
334 | mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n", | |
335 | journal->j_trans_id, flushed); | |
336 | ||
34d024f8 | 337 | ocfs2_wake_downconvert_thread(osb); |
ccd979bd MF |
338 | wake_up(&journal->j_checkpointed); |
339 | finally: | |
340 | mlog_exit(status); | |
341 | return status; | |
342 | } | |
343 | ||
ccd979bd MF |
344 | /* pass it NULL and it will allocate a new handle object for you. If |
345 | * you pass it a handle however, it may still return error, in which | |
346 | * case it has free'd the passed handle for you. */ | |
1fabe148 | 347 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
ccd979bd | 348 | { |
ccd979bd | 349 | journal_t *journal = osb->journal->j_journal; |
1fabe148 | 350 | handle_t *handle; |
ccd979bd | 351 | |
ebdec83b | 352 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd | 353 | |
65eff9cc MF |
354 | if (ocfs2_is_hard_readonly(osb)) |
355 | return ERR_PTR(-EROFS); | |
ccd979bd MF |
356 | |
357 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
358 | BUG_ON(max_buffs <= 0); | |
359 | ||
90e86a63 JK |
360 | /* Nested transaction? Just return the handle... */ |
361 | if (journal_current_handle()) | |
362 | return jbd2_journal_start(journal, max_buffs); | |
ccd979bd | 363 | |
ccd979bd MF |
364 | down_read(&osb->journal->j_trans_barrier); |
365 | ||
2b4e30fb | 366 | handle = jbd2_journal_start(journal, max_buffs); |
1fabe148 | 367 | if (IS_ERR(handle)) { |
ccd979bd MF |
368 | up_read(&osb->journal->j_trans_barrier); |
369 | ||
1fabe148 | 370 | mlog_errno(PTR_ERR(handle)); |
ccd979bd MF |
371 | |
372 | if (is_journal_aborted(journal)) { | |
373 | ocfs2_abort(osb->sb, "Detected aborted journal"); | |
1fabe148 | 374 | handle = ERR_PTR(-EROFS); |
ccd979bd | 375 | } |
c271c5c2 SM |
376 | } else { |
377 | if (!ocfs2_mount_local(osb)) | |
378 | atomic_inc(&(osb->journal->j_num_trans)); | |
379 | } | |
ccd979bd | 380 | |
ccd979bd | 381 | return handle; |
ccd979bd MF |
382 | } |
383 | ||
1fabe148 MF |
384 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
385 | handle_t *handle) | |
ccd979bd | 386 | { |
90e86a63 | 387 | int ret, nested; |
02dc1af4 | 388 | struct ocfs2_journal *journal = osb->journal; |
ccd979bd MF |
389 | |
390 | BUG_ON(!handle); | |
391 | ||
90e86a63 | 392 | nested = handle->h_ref > 1; |
2b4e30fb | 393 | ret = jbd2_journal_stop(handle); |
1fabe148 MF |
394 | if (ret < 0) |
395 | mlog_errno(ret); | |
ccd979bd | 396 | |
90e86a63 JK |
397 | if (!nested) |
398 | up_read(&journal->j_trans_barrier); | |
ccd979bd | 399 | |
1fabe148 | 400 | return ret; |
ccd979bd MF |
401 | } |
402 | ||
403 | /* | |
404 | * 'nblocks' is what you want to add to the current | |
405 | * transaction. extend_trans will either extend the current handle by | |
406 | * nblocks, or commit it and start a new one with nblocks credits. | |
407 | * | |
2b4e30fb | 408 | * This might call jbd2_journal_restart() which will commit dirty buffers |
e8aed345 MF |
409 | * and then restart the transaction. Before calling |
410 | * ocfs2_extend_trans(), any changed blocks should have been | |
411 | * dirtied. After calling it, all blocks which need to be changed must | |
412 | * go through another set of journal_access/journal_dirty calls. | |
413 | * | |
ccd979bd MF |
414 | * WARNING: This will not release any semaphores or disk locks taken |
415 | * during the transaction, so make sure they were taken *before* | |
416 | * start_trans or we'll have ordering deadlocks. | |
417 | * | |
418 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
419 | * good because transaction ids haven't yet been recorded on the | |
420 | * cluster locks associated with this handle. | |
421 | */ | |
1fc58146 | 422 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
ccd979bd MF |
423 | { |
424 | int status; | |
425 | ||
426 | BUG_ON(!handle); | |
ccd979bd MF |
427 | BUG_ON(!nblocks); |
428 | ||
429 | mlog_entry_void(); | |
430 | ||
431 | mlog(0, "Trying to extend transaction by %d blocks\n", nblocks); | |
432 | ||
e407e397 | 433 | #ifdef CONFIG_OCFS2_DEBUG_FS |
0879c584 MF |
434 | status = 1; |
435 | #else | |
2b4e30fb | 436 | status = jbd2_journal_extend(handle, nblocks); |
ccd979bd MF |
437 | if (status < 0) { |
438 | mlog_errno(status); | |
439 | goto bail; | |
440 | } | |
0879c584 | 441 | #endif |
ccd979bd MF |
442 | |
443 | if (status > 0) { | |
2b4e30fb JB |
444 | mlog(0, |
445 | "jbd2_journal_extend failed, trying " | |
446 | "jbd2_journal_restart\n"); | |
447 | status = jbd2_journal_restart(handle, nblocks); | |
ccd979bd | 448 | if (status < 0) { |
ccd979bd MF |
449 | mlog_errno(status); |
450 | goto bail; | |
451 | } | |
01ddf1e1 | 452 | } |
ccd979bd MF |
453 | |
454 | status = 0; | |
455 | bail: | |
456 | ||
457 | mlog_exit(status); | |
458 | return status; | |
459 | } | |
460 | ||
50655ae9 JB |
461 | struct ocfs2_triggers { |
462 | struct jbd2_buffer_trigger_type ot_triggers; | |
463 | int ot_offset; | |
464 | }; | |
465 | ||
466 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) | |
467 | { | |
468 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); | |
469 | } | |
470 | ||
471 | static void ocfs2_commit_trigger(struct jbd2_buffer_trigger_type *triggers, | |
472 | struct buffer_head *bh, | |
473 | void *data, size_t size) | |
474 | { | |
475 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); | |
476 | ||
477 | /* | |
478 | * We aren't guaranteed to have the superblock here, so we | |
479 | * must unconditionally compute the ecc data. | |
480 | * __ocfs2_journal_access() will only set the triggers if | |
481 | * metaecc is enabled. | |
482 | */ | |
483 | ocfs2_block_check_compute(data, size, data + ot->ot_offset); | |
484 | } | |
485 | ||
486 | /* | |
487 | * Quota blocks have their own trigger because the struct ocfs2_block_check | |
488 | * offset depends on the blocksize. | |
489 | */ | |
490 | static void ocfs2_dq_commit_trigger(struct jbd2_buffer_trigger_type *triggers, | |
491 | struct buffer_head *bh, | |
492 | void *data, size_t size) | |
493 | { | |
494 | struct ocfs2_disk_dqtrailer *dqt = | |
495 | ocfs2_block_dqtrailer(size, data); | |
496 | ||
497 | /* | |
498 | * We aren't guaranteed to have the superblock here, so we | |
499 | * must unconditionally compute the ecc data. | |
500 | * __ocfs2_journal_access() will only set the triggers if | |
501 | * metaecc is enabled. | |
502 | */ | |
503 | ocfs2_block_check_compute(data, size, &dqt->dq_check); | |
504 | } | |
505 | ||
c175a518 JB |
506 | /* |
507 | * Directory blocks also have their own trigger because the | |
508 | * struct ocfs2_block_check offset depends on the blocksize. | |
509 | */ | |
510 | static void ocfs2_db_commit_trigger(struct jbd2_buffer_trigger_type *triggers, | |
511 | struct buffer_head *bh, | |
512 | void *data, size_t size) | |
513 | { | |
514 | struct ocfs2_dir_block_trailer *trailer = | |
515 | ocfs2_dir_trailer_from_size(size, data); | |
516 | ||
517 | /* | |
518 | * We aren't guaranteed to have the superblock here, so we | |
519 | * must unconditionally compute the ecc data. | |
520 | * __ocfs2_journal_access() will only set the triggers if | |
521 | * metaecc is enabled. | |
522 | */ | |
523 | ocfs2_block_check_compute(data, size, &trailer->db_check); | |
524 | } | |
525 | ||
50655ae9 JB |
526 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
527 | struct buffer_head *bh) | |
528 | { | |
529 | mlog(ML_ERROR, | |
530 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " | |
531 | "bh->b_blocknr = %llu\n", | |
532 | (unsigned long)bh, | |
533 | (unsigned long long)bh->b_blocknr); | |
534 | ||
535 | /* We aren't guaranteed to have the superblock here - but if we | |
536 | * don't, it'll just crash. */ | |
537 | ocfs2_error(bh->b_assoc_map->host->i_sb, | |
538 | "JBD2 has aborted our journal, ocfs2 cannot continue\n"); | |
539 | } | |
540 | ||
541 | static struct ocfs2_triggers di_triggers = { | |
542 | .ot_triggers = { | |
543 | .t_commit = ocfs2_commit_trigger, | |
544 | .t_abort = ocfs2_abort_trigger, | |
545 | }, | |
546 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), | |
547 | }; | |
548 | ||
549 | static struct ocfs2_triggers eb_triggers = { | |
550 | .ot_triggers = { | |
551 | .t_commit = ocfs2_commit_trigger, | |
552 | .t_abort = ocfs2_abort_trigger, | |
553 | }, | |
554 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), | |
555 | }; | |
556 | ||
557 | static struct ocfs2_triggers gd_triggers = { | |
558 | .ot_triggers = { | |
559 | .t_commit = ocfs2_commit_trigger, | |
560 | .t_abort = ocfs2_abort_trigger, | |
561 | }, | |
562 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), | |
563 | }; | |
564 | ||
c175a518 JB |
565 | static struct ocfs2_triggers db_triggers = { |
566 | .ot_triggers = { | |
567 | .t_commit = ocfs2_db_commit_trigger, | |
568 | .t_abort = ocfs2_abort_trigger, | |
569 | }, | |
570 | }; | |
571 | ||
50655ae9 JB |
572 | static struct ocfs2_triggers xb_triggers = { |
573 | .ot_triggers = { | |
574 | .t_commit = ocfs2_commit_trigger, | |
575 | .t_abort = ocfs2_abort_trigger, | |
576 | }, | |
577 | .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), | |
578 | }; | |
579 | ||
580 | static struct ocfs2_triggers dq_triggers = { | |
581 | .ot_triggers = { | |
582 | .t_commit = ocfs2_dq_commit_trigger, | |
583 | .t_abort = ocfs2_abort_trigger, | |
584 | }, | |
585 | }; | |
586 | ||
9b7895ef MF |
587 | static struct ocfs2_triggers dr_triggers = { |
588 | .ot_triggers = { | |
589 | .t_commit = ocfs2_commit_trigger, | |
590 | .t_abort = ocfs2_abort_trigger, | |
591 | }, | |
592 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), | |
593 | }; | |
594 | ||
595 | static struct ocfs2_triggers dl_triggers = { | |
596 | .ot_triggers = { | |
597 | .t_commit = ocfs2_commit_trigger, | |
598 | .t_abort = ocfs2_abort_trigger, | |
599 | }, | |
600 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), | |
601 | }; | |
602 | ||
50655ae9 JB |
603 | static int __ocfs2_journal_access(handle_t *handle, |
604 | struct inode *inode, | |
605 | struct buffer_head *bh, | |
606 | struct ocfs2_triggers *triggers, | |
607 | int type) | |
ccd979bd MF |
608 | { |
609 | int status; | |
610 | ||
611 | BUG_ON(!inode); | |
612 | BUG_ON(!handle); | |
613 | BUG_ON(!bh); | |
ccd979bd | 614 | |
205f87f6 | 615 | mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n", |
ccd979bd MF |
616 | (unsigned long long)bh->b_blocknr, type, |
617 | (type == OCFS2_JOURNAL_ACCESS_CREATE) ? | |
618 | "OCFS2_JOURNAL_ACCESS_CREATE" : | |
619 | "OCFS2_JOURNAL_ACCESS_WRITE", | |
620 | bh->b_size); | |
621 | ||
622 | /* we can safely remove this assertion after testing. */ | |
623 | if (!buffer_uptodate(bh)) { | |
624 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
625 | mlog(ML_ERROR, "b_blocknr=%llu\n", | |
626 | (unsigned long long)bh->b_blocknr); | |
627 | BUG(); | |
628 | } | |
629 | ||
630 | /* Set the current transaction information on the inode so | |
631 | * that the locking code knows whether it can drop it's locks | |
632 | * on this inode or not. We're protected from the commit | |
633 | * thread updating the current transaction id until | |
634 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
635 | * j_trans_barrier for us. */ | |
636 | ocfs2_set_inode_lock_trans(OCFS2_SB(inode->i_sb)->journal, inode); | |
637 | ||
251b6ecc | 638 | mutex_lock(&OCFS2_I(inode)->ip_io_mutex); |
ccd979bd MF |
639 | switch (type) { |
640 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
641 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
2b4e30fb | 642 | status = jbd2_journal_get_write_access(handle, bh); |
ccd979bd MF |
643 | break; |
644 | ||
645 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
2b4e30fb | 646 | status = jbd2_journal_get_undo_access(handle, bh); |
ccd979bd MF |
647 | break; |
648 | ||
649 | default: | |
650 | status = -EINVAL; | |
651 | mlog(ML_ERROR, "Uknown access type!\n"); | |
652 | } | |
50655ae9 JB |
653 | if (!status && ocfs2_meta_ecc(OCFS2_SB(inode->i_sb)) && triggers) |
654 | jbd2_journal_set_triggers(bh, &triggers->ot_triggers); | |
251b6ecc | 655 | mutex_unlock(&OCFS2_I(inode)->ip_io_mutex); |
ccd979bd MF |
656 | |
657 | if (status < 0) | |
658 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
659 | status, type); | |
660 | ||
661 | mlog_exit(status); | |
662 | return status; | |
663 | } | |
664 | ||
50655ae9 JB |
665 | int ocfs2_journal_access_di(handle_t *handle, struct inode *inode, |
666 | struct buffer_head *bh, int type) | |
667 | { | |
668 | return __ocfs2_journal_access(handle, inode, bh, &di_triggers, | |
669 | type); | |
670 | } | |
671 | ||
672 | int ocfs2_journal_access_eb(handle_t *handle, struct inode *inode, | |
673 | struct buffer_head *bh, int type) | |
674 | { | |
675 | return __ocfs2_journal_access(handle, inode, bh, &eb_triggers, | |
676 | type); | |
677 | } | |
678 | ||
679 | int ocfs2_journal_access_gd(handle_t *handle, struct inode *inode, | |
680 | struct buffer_head *bh, int type) | |
681 | { | |
682 | return __ocfs2_journal_access(handle, inode, bh, &gd_triggers, | |
683 | type); | |
684 | } | |
685 | ||
686 | int ocfs2_journal_access_db(handle_t *handle, struct inode *inode, | |
687 | struct buffer_head *bh, int type) | |
688 | { | |
c175a518 JB |
689 | return __ocfs2_journal_access(handle, inode, bh, &db_triggers, |
690 | type); | |
50655ae9 JB |
691 | } |
692 | ||
693 | int ocfs2_journal_access_xb(handle_t *handle, struct inode *inode, | |
694 | struct buffer_head *bh, int type) | |
695 | { | |
696 | return __ocfs2_journal_access(handle, inode, bh, &xb_triggers, | |
697 | type); | |
698 | } | |
699 | ||
700 | int ocfs2_journal_access_dq(handle_t *handle, struct inode *inode, | |
701 | struct buffer_head *bh, int type) | |
702 | { | |
703 | return __ocfs2_journal_access(handle, inode, bh, &dq_triggers, | |
704 | type); | |
705 | } | |
706 | ||
9b7895ef MF |
707 | int ocfs2_journal_access_dr(handle_t *handle, struct inode *inode, |
708 | struct buffer_head *bh, int type) | |
709 | { | |
710 | return __ocfs2_journal_access(handle, inode, bh, &dr_triggers, | |
711 | type); | |
712 | } | |
713 | ||
714 | int ocfs2_journal_access_dl(handle_t *handle, struct inode *inode, | |
715 | struct buffer_head *bh, int type) | |
716 | { | |
717 | return __ocfs2_journal_access(handle, inode, bh, &dl_triggers, | |
718 | type); | |
719 | } | |
720 | ||
50655ae9 JB |
721 | int ocfs2_journal_access(handle_t *handle, struct inode *inode, |
722 | struct buffer_head *bh, int type) | |
723 | { | |
724 | return __ocfs2_journal_access(handle, inode, bh, NULL, type); | |
725 | } | |
726 | ||
1fabe148 | 727 | int ocfs2_journal_dirty(handle_t *handle, |
ccd979bd MF |
728 | struct buffer_head *bh) |
729 | { | |
730 | int status; | |
731 | ||
ccd979bd MF |
732 | mlog_entry("(bh->b_blocknr=%llu)\n", |
733 | (unsigned long long)bh->b_blocknr); | |
734 | ||
2b4e30fb | 735 | status = jbd2_journal_dirty_metadata(handle, bh); |
ccd979bd MF |
736 | if (status < 0) |
737 | mlog(ML_ERROR, "Could not dirty metadata buffer. " | |
738 | "(bh->b_blocknr=%llu)\n", | |
739 | (unsigned long long)bh->b_blocknr); | |
740 | ||
741 | mlog_exit(status); | |
742 | return status; | |
743 | } | |
744 | ||
2b4e30fb | 745 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
ccd979bd MF |
746 | |
747 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
748 | { | |
749 | journal_t *journal = osb->journal->j_journal; | |
d147b3d6 MF |
750 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
751 | ||
752 | if (osb->osb_commit_interval) | |
753 | commit_interval = osb->osb_commit_interval; | |
ccd979bd MF |
754 | |
755 | spin_lock(&journal->j_state_lock); | |
d147b3d6 | 756 | journal->j_commit_interval = commit_interval; |
ccd979bd | 757 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
2b4e30fb | 758 | journal->j_flags |= JBD2_BARRIER; |
ccd979bd | 759 | else |
2b4e30fb | 760 | journal->j_flags &= ~JBD2_BARRIER; |
ccd979bd MF |
761 | spin_unlock(&journal->j_state_lock); |
762 | } | |
763 | ||
764 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
765 | { | |
766 | int status = -1; | |
767 | struct inode *inode = NULL; /* the journal inode */ | |
768 | journal_t *j_journal = NULL; | |
769 | struct ocfs2_dinode *di = NULL; | |
770 | struct buffer_head *bh = NULL; | |
771 | struct ocfs2_super *osb; | |
e63aecb6 | 772 | int inode_lock = 0; |
ccd979bd MF |
773 | |
774 | mlog_entry_void(); | |
775 | ||
776 | BUG_ON(!journal); | |
777 | ||
778 | osb = journal->j_osb; | |
779 | ||
780 | /* already have the inode for our journal */ | |
781 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
782 | osb->slot_num); | |
783 | if (inode == NULL) { | |
784 | status = -EACCES; | |
785 | mlog_errno(status); | |
786 | goto done; | |
787 | } | |
788 | if (is_bad_inode(inode)) { | |
789 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
790 | iput(inode); | |
791 | inode = NULL; | |
792 | status = -EACCES; | |
793 | goto done; | |
794 | } | |
795 | ||
796 | SET_INODE_JOURNAL(inode); | |
797 | OCFS2_I(inode)->ip_open_count++; | |
798 | ||
6eff5790 MF |
799 | /* Skip recovery waits here - journal inode metadata never |
800 | * changes in a live cluster so it can be considered an | |
801 | * exception to the rule. */ | |
e63aecb6 | 802 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd MF |
803 | if (status < 0) { |
804 | if (status != -ERESTARTSYS) | |
805 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
806 | goto done; | |
807 | } | |
808 | ||
e63aecb6 | 809 | inode_lock = 1; |
ccd979bd MF |
810 | di = (struct ocfs2_dinode *)bh->b_data; |
811 | ||
812 | if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) { | |
813 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", | |
814 | inode->i_size); | |
815 | status = -EINVAL; | |
816 | goto done; | |
817 | } | |
818 | ||
819 | mlog(0, "inode->i_size = %lld\n", inode->i_size); | |
5515eff8 AM |
820 | mlog(0, "inode->i_blocks = %llu\n", |
821 | (unsigned long long)inode->i_blocks); | |
ccd979bd MF |
822 | mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters); |
823 | ||
824 | /* call the kernels journal init function now */ | |
2b4e30fb | 825 | j_journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
826 | if (j_journal == NULL) { |
827 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
828 | status = -EINVAL; | |
829 | goto done; | |
830 | } | |
831 | ||
2b4e30fb | 832 | mlog(0, "Returned from jbd2_journal_init_inode\n"); |
ccd979bd MF |
833 | mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen); |
834 | ||
835 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
836 | OCFS2_JOURNAL_DIRTY_FL); | |
837 | ||
838 | journal->j_journal = j_journal; | |
839 | journal->j_inode = inode; | |
840 | journal->j_bh = bh; | |
841 | ||
842 | ocfs2_set_journal_params(osb); | |
843 | ||
844 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
845 | ||
846 | status = 0; | |
847 | done: | |
848 | if (status < 0) { | |
e63aecb6 MF |
849 | if (inode_lock) |
850 | ocfs2_inode_unlock(inode, 1); | |
a81cb88b | 851 | brelse(bh); |
ccd979bd MF |
852 | if (inode) { |
853 | OCFS2_I(inode)->ip_open_count--; | |
854 | iput(inode); | |
855 | } | |
856 | } | |
857 | ||
858 | mlog_exit(status); | |
859 | return status; | |
860 | } | |
861 | ||
539d8264 SM |
862 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
863 | { | |
864 | le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); | |
865 | } | |
866 | ||
867 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) | |
868 | { | |
869 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); | |
870 | } | |
871 | ||
ccd979bd | 872 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 873 | int dirty, int replayed) |
ccd979bd MF |
874 | { |
875 | int status; | |
876 | unsigned int flags; | |
877 | struct ocfs2_journal *journal = osb->journal; | |
878 | struct buffer_head *bh = journal->j_bh; | |
879 | struct ocfs2_dinode *fe; | |
880 | ||
881 | mlog_entry_void(); | |
882 | ||
883 | fe = (struct ocfs2_dinode *)bh->b_data; | |
10995aa2 JB |
884 | |
885 | /* The journal bh on the osb always comes from ocfs2_journal_init() | |
886 | * and was validated there inside ocfs2_inode_lock_full(). It's a | |
887 | * code bug if we mess it up. */ | |
888 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
ccd979bd MF |
889 | |
890 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
891 | if (dirty) | |
892 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
893 | else | |
894 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
895 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
896 | ||
539d8264 SM |
897 | if (replayed) |
898 | ocfs2_bump_recovery_generation(fe); | |
899 | ||
13723d00 | 900 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 901 | status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); |
ccd979bd MF |
902 | if (status < 0) |
903 | mlog_errno(status); | |
904 | ||
ccd979bd MF |
905 | mlog_exit(status); |
906 | return status; | |
907 | } | |
908 | ||
909 | /* | |
910 | * If the journal has been kmalloc'd it needs to be freed after this | |
911 | * call. | |
912 | */ | |
913 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
914 | { | |
915 | struct ocfs2_journal *journal = NULL; | |
916 | int status = 0; | |
917 | struct inode *inode = NULL; | |
918 | int num_running_trans = 0; | |
919 | ||
920 | mlog_entry_void(); | |
921 | ||
ebdec83b | 922 | BUG_ON(!osb); |
ccd979bd MF |
923 | |
924 | journal = osb->journal; | |
925 | if (!journal) | |
926 | goto done; | |
927 | ||
928 | inode = journal->j_inode; | |
929 | ||
930 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
931 | goto done; | |
932 | ||
2b4e30fb | 933 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
ccd979bd MF |
934 | if (!igrab(inode)) |
935 | BUG(); | |
936 | ||
937 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
938 | if (num_running_trans > 0) | |
939 | mlog(0, "Shutting down journal: must wait on %d " | |
940 | "running transactions!\n", | |
941 | num_running_trans); | |
942 | ||
943 | /* Do a commit_cache here. It will flush our journal, *and* | |
944 | * release any locks that are still held. | |
945 | * set the SHUTDOWN flag and release the trans lock. | |
946 | * the commit thread will take the trans lock for us below. */ | |
947 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
948 | ||
949 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
950 | * drop the trans_lock (which we want to hold until we | |
951 | * completely destroy the journal. */ | |
952 | if (osb->commit_task) { | |
953 | /* Wait for the commit thread */ | |
954 | mlog(0, "Waiting for ocfs2commit to exit....\n"); | |
955 | kthread_stop(osb->commit_task); | |
956 | osb->commit_task = NULL; | |
957 | } | |
958 | ||
959 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
960 | ||
c271c5c2 | 961 | if (ocfs2_mount_local(osb)) { |
2b4e30fb JB |
962 | jbd2_journal_lock_updates(journal->j_journal); |
963 | status = jbd2_journal_flush(journal->j_journal); | |
964 | jbd2_journal_unlock_updates(journal->j_journal); | |
c271c5c2 SM |
965 | if (status < 0) |
966 | mlog_errno(status); | |
967 | } | |
968 | ||
969 | if (status == 0) { | |
970 | /* | |
971 | * Do not toggle if flush was unsuccessful otherwise | |
972 | * will leave dirty metadata in a "clean" journal | |
973 | */ | |
539d8264 | 974 | status = ocfs2_journal_toggle_dirty(osb, 0, 0); |
c271c5c2 SM |
975 | if (status < 0) |
976 | mlog_errno(status); | |
977 | } | |
ccd979bd MF |
978 | |
979 | /* Shutdown the kernel journal system */ | |
2b4e30fb | 980 | jbd2_journal_destroy(journal->j_journal); |
ae0dff68 | 981 | journal->j_journal = NULL; |
ccd979bd MF |
982 | |
983 | OCFS2_I(inode)->ip_open_count--; | |
984 | ||
985 | /* unlock our journal */ | |
e63aecb6 | 986 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
987 | |
988 | brelse(journal->j_bh); | |
989 | journal->j_bh = NULL; | |
990 | ||
991 | journal->j_state = OCFS2_JOURNAL_FREE; | |
992 | ||
993 | // up_write(&journal->j_trans_barrier); | |
994 | done: | |
995 | if (inode) | |
996 | iput(inode); | |
997 | mlog_exit_void(); | |
998 | } | |
999 | ||
1000 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
1001 | journal_t *journal, | |
1002 | int slot) | |
1003 | { | |
1004 | int olderr; | |
1005 | ||
2b4e30fb | 1006 | olderr = jbd2_journal_errno(journal); |
ccd979bd MF |
1007 | if (olderr) { |
1008 | mlog(ML_ERROR, "File system error %d recorded in " | |
1009 | "journal %u.\n", olderr, slot); | |
1010 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
1011 | sb->s_id); | |
1012 | ||
2b4e30fb JB |
1013 | jbd2_journal_ack_err(journal); |
1014 | jbd2_journal_clear_err(journal); | |
ccd979bd MF |
1015 | } |
1016 | } | |
1017 | ||
539d8264 | 1018 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
ccd979bd MF |
1019 | { |
1020 | int status = 0; | |
1021 | struct ocfs2_super *osb; | |
1022 | ||
1023 | mlog_entry_void(); | |
1024 | ||
b1f3550f | 1025 | BUG_ON(!journal); |
ccd979bd MF |
1026 | |
1027 | osb = journal->j_osb; | |
1028 | ||
2b4e30fb | 1029 | status = jbd2_journal_load(journal->j_journal); |
ccd979bd MF |
1030 | if (status < 0) { |
1031 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
1032 | goto done; | |
1033 | } | |
1034 | ||
1035 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
1036 | ||
539d8264 | 1037 | status = ocfs2_journal_toggle_dirty(osb, 1, replayed); |
ccd979bd MF |
1038 | if (status < 0) { |
1039 | mlog_errno(status); | |
1040 | goto done; | |
1041 | } | |
1042 | ||
1043 | /* Launch the commit thread */ | |
c271c5c2 SM |
1044 | if (!local) { |
1045 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, | |
1046 | "ocfs2cmt"); | |
1047 | if (IS_ERR(osb->commit_task)) { | |
1048 | status = PTR_ERR(osb->commit_task); | |
1049 | osb->commit_task = NULL; | |
1050 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " | |
1051 | "error=%d", status); | |
1052 | goto done; | |
1053 | } | |
1054 | } else | |
ccd979bd | 1055 | osb->commit_task = NULL; |
ccd979bd MF |
1056 | |
1057 | done: | |
1058 | mlog_exit(status); | |
1059 | return status; | |
1060 | } | |
1061 | ||
1062 | ||
1063 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
1064 | * mark the journal clean */ | |
1065 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
1066 | { | |
1067 | int status; | |
1068 | ||
1069 | mlog_entry_void(); | |
1070 | ||
ebdec83b | 1071 | BUG_ON(!journal); |
ccd979bd | 1072 | |
2b4e30fb | 1073 | status = jbd2_journal_wipe(journal->j_journal, full); |
ccd979bd MF |
1074 | if (status < 0) { |
1075 | mlog_errno(status); | |
1076 | goto bail; | |
1077 | } | |
1078 | ||
539d8264 | 1079 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); |
ccd979bd MF |
1080 | if (status < 0) |
1081 | mlog_errno(status); | |
1082 | ||
1083 | bail: | |
1084 | mlog_exit(status); | |
1085 | return status; | |
1086 | } | |
1087 | ||
553abd04 JB |
1088 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1089 | { | |
1090 | int empty; | |
1091 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
1092 | ||
1093 | spin_lock(&osb->osb_lock); | |
1094 | empty = (rm->rm_used == 0); | |
1095 | spin_unlock(&osb->osb_lock); | |
1096 | ||
1097 | return empty; | |
1098 | } | |
1099 | ||
1100 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) | |
1101 | { | |
1102 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); | |
1103 | } | |
1104 | ||
ccd979bd MF |
1105 | /* |
1106 | * JBD Might read a cached version of another nodes journal file. We | |
1107 | * don't want this as this file changes often and we get no | |
1108 | * notification on those changes. The only way to be sure that we've | |
1109 | * got the most up to date version of those blocks then is to force | |
1110 | * read them off disk. Just searching through the buffer cache won't | |
1111 | * work as there may be pages backing this file which are still marked | |
1112 | * up to date. We know things can't change on this file underneath us | |
1113 | * as we have the lock by now :) | |
1114 | */ | |
1115 | static int ocfs2_force_read_journal(struct inode *inode) | |
1116 | { | |
1117 | int status = 0; | |
4f902c37 | 1118 | int i; |
8110b073 | 1119 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
4f902c37 | 1120 | #define CONCURRENT_JOURNAL_FILL 32ULL |
ccd979bd MF |
1121 | struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; |
1122 | ||
1123 | mlog_entry_void(); | |
1124 | ||
ccd979bd MF |
1125 | memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); |
1126 | ||
8110b073 | 1127 | num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, inode->i_size); |
ccd979bd | 1128 | v_blkno = 0; |
8110b073 | 1129 | while (v_blkno < num_blocks) { |
ccd979bd | 1130 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
49cb8d2d | 1131 | &p_blkno, &p_blocks, NULL); |
ccd979bd MF |
1132 | if (status < 0) { |
1133 | mlog_errno(status); | |
1134 | goto bail; | |
1135 | } | |
1136 | ||
1137 | if (p_blocks > CONCURRENT_JOURNAL_FILL) | |
1138 | p_blocks = CONCURRENT_JOURNAL_FILL; | |
1139 | ||
dd4a2c2b MF |
1140 | /* We are reading journal data which should not |
1141 | * be put in the uptodate cache */ | |
da1e9098 JB |
1142 | status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), |
1143 | p_blkno, p_blocks, bhs); | |
ccd979bd MF |
1144 | if (status < 0) { |
1145 | mlog_errno(status); | |
1146 | goto bail; | |
1147 | } | |
1148 | ||
1149 | for(i = 0; i < p_blocks; i++) { | |
1150 | brelse(bhs[i]); | |
1151 | bhs[i] = NULL; | |
1152 | } | |
1153 | ||
1154 | v_blkno += p_blocks; | |
1155 | } | |
1156 | ||
1157 | bail: | |
1158 | for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) | |
a81cb88b | 1159 | brelse(bhs[i]); |
ccd979bd MF |
1160 | mlog_exit(status); |
1161 | return status; | |
1162 | } | |
1163 | ||
1164 | struct ocfs2_la_recovery_item { | |
1165 | struct list_head lri_list; | |
1166 | int lri_slot; | |
1167 | struct ocfs2_dinode *lri_la_dinode; | |
1168 | struct ocfs2_dinode *lri_tl_dinode; | |
2205363d | 1169 | struct ocfs2_quota_recovery *lri_qrec; |
ccd979bd MF |
1170 | }; |
1171 | ||
1172 | /* Does the second half of the recovery process. By this point, the | |
1173 | * node is marked clean and can actually be considered recovered, | |
1174 | * hence it's no longer in the recovery map, but there's still some | |
1175 | * cleanup we can do which shouldn't happen within the recovery thread | |
1176 | * as locking in that context becomes very difficult if we are to take | |
1177 | * recovering nodes into account. | |
1178 | * | |
1179 | * NOTE: This function can and will sleep on recovery of other nodes | |
1180 | * during cluster locking, just like any other ocfs2 process. | |
1181 | */ | |
c4028958 | 1182 | void ocfs2_complete_recovery(struct work_struct *work) |
ccd979bd MF |
1183 | { |
1184 | int ret; | |
c4028958 DH |
1185 | struct ocfs2_journal *journal = |
1186 | container_of(work, struct ocfs2_journal, j_recovery_work); | |
1187 | struct ocfs2_super *osb = journal->j_osb; | |
ccd979bd | 1188 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
800deef3 | 1189 | struct ocfs2_la_recovery_item *item, *n; |
2205363d | 1190 | struct ocfs2_quota_recovery *qrec; |
ccd979bd MF |
1191 | LIST_HEAD(tmp_la_list); |
1192 | ||
1193 | mlog_entry_void(); | |
1194 | ||
1195 | mlog(0, "completing recovery from keventd\n"); | |
1196 | ||
1197 | spin_lock(&journal->j_lock); | |
1198 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
1199 | spin_unlock(&journal->j_lock); | |
1200 | ||
800deef3 | 1201 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
ccd979bd MF |
1202 | list_del_init(&item->lri_list); |
1203 | ||
1204 | mlog(0, "Complete recovery for slot %d\n", item->lri_slot); | |
1205 | ||
19ece546 JK |
1206 | ocfs2_wait_on_quotas(osb); |
1207 | ||
ccd979bd MF |
1208 | la_dinode = item->lri_la_dinode; |
1209 | if (la_dinode) { | |
b0697053 | 1210 | mlog(0, "Clean up local alloc %llu\n", |
1ca1a111 | 1211 | (unsigned long long)le64_to_cpu(la_dinode->i_blkno)); |
ccd979bd MF |
1212 | |
1213 | ret = ocfs2_complete_local_alloc_recovery(osb, | |
1214 | la_dinode); | |
1215 | if (ret < 0) | |
1216 | mlog_errno(ret); | |
1217 | ||
1218 | kfree(la_dinode); | |
1219 | } | |
1220 | ||
1221 | tl_dinode = item->lri_tl_dinode; | |
1222 | if (tl_dinode) { | |
b0697053 | 1223 | mlog(0, "Clean up truncate log %llu\n", |
1ca1a111 | 1224 | (unsigned long long)le64_to_cpu(tl_dinode->i_blkno)); |
ccd979bd MF |
1225 | |
1226 | ret = ocfs2_complete_truncate_log_recovery(osb, | |
1227 | tl_dinode); | |
1228 | if (ret < 0) | |
1229 | mlog_errno(ret); | |
1230 | ||
1231 | kfree(tl_dinode); | |
1232 | } | |
1233 | ||
1234 | ret = ocfs2_recover_orphans(osb, item->lri_slot); | |
1235 | if (ret < 0) | |
1236 | mlog_errno(ret); | |
1237 | ||
2205363d JK |
1238 | qrec = item->lri_qrec; |
1239 | if (qrec) { | |
1240 | mlog(0, "Recovering quota files"); | |
1241 | ret = ocfs2_finish_quota_recovery(osb, qrec, | |
1242 | item->lri_slot); | |
1243 | if (ret < 0) | |
1244 | mlog_errno(ret); | |
1245 | /* Recovery info is already freed now */ | |
1246 | } | |
1247 | ||
ccd979bd MF |
1248 | kfree(item); |
1249 | } | |
1250 | ||
1251 | mlog(0, "Recovery completion\n"); | |
1252 | mlog_exit_void(); | |
1253 | } | |
1254 | ||
1255 | /* NOTE: This function always eats your references to la_dinode and | |
1256 | * tl_dinode, either manually on error, or by passing them to | |
1257 | * ocfs2_complete_recovery */ | |
1258 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
1259 | int slot_num, | |
1260 | struct ocfs2_dinode *la_dinode, | |
2205363d JK |
1261 | struct ocfs2_dinode *tl_dinode, |
1262 | struct ocfs2_quota_recovery *qrec) | |
ccd979bd MF |
1263 | { |
1264 | struct ocfs2_la_recovery_item *item; | |
1265 | ||
afae00ab | 1266 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
1267 | if (!item) { |
1268 | /* Though we wish to avoid it, we are in fact safe in | |
1269 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
1270 | * than capable of reclaiming unused space. */ | |
1271 | if (la_dinode) | |
1272 | kfree(la_dinode); | |
1273 | ||
1274 | if (tl_dinode) | |
1275 | kfree(tl_dinode); | |
1276 | ||
2205363d JK |
1277 | if (qrec) |
1278 | ocfs2_free_quota_recovery(qrec); | |
1279 | ||
ccd979bd MF |
1280 | mlog_errno(-ENOMEM); |
1281 | return; | |
1282 | } | |
1283 | ||
1284 | INIT_LIST_HEAD(&item->lri_list); | |
1285 | item->lri_la_dinode = la_dinode; | |
1286 | item->lri_slot = slot_num; | |
1287 | item->lri_tl_dinode = tl_dinode; | |
2205363d | 1288 | item->lri_qrec = qrec; |
ccd979bd MF |
1289 | |
1290 | spin_lock(&journal->j_lock); | |
1291 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
1292 | queue_work(ocfs2_wq, &journal->j_recovery_work); | |
1293 | spin_unlock(&journal->j_lock); | |
1294 | } | |
1295 | ||
1296 | /* Called by the mount code to queue recovery the last part of | |
9140db04 | 1297 | * recovery for it's own and offline slot(s). */ |
ccd979bd MF |
1298 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1299 | { | |
1300 | struct ocfs2_journal *journal = osb->journal; | |
1301 | ||
9140db04 SE |
1302 | /* No need to queue up our truncate_log as regular cleanup will catch |
1303 | * that */ | |
1304 | ocfs2_queue_recovery_completion(journal, osb->slot_num, | |
1305 | osb->local_alloc_copy, NULL, NULL); | |
1306 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
ccd979bd | 1307 | |
9140db04 SE |
1308 | osb->local_alloc_copy = NULL; |
1309 | osb->dirty = 0; | |
1310 | ||
1311 | /* queue to recover orphan slots for all offline slots */ | |
1312 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1313 | ocfs2_queue_replay_slots(osb); | |
1314 | ocfs2_free_replay_slots(osb); | |
ccd979bd MF |
1315 | } |
1316 | ||
2205363d JK |
1317 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1318 | { | |
1319 | if (osb->quota_rec) { | |
1320 | ocfs2_queue_recovery_completion(osb->journal, | |
1321 | osb->slot_num, | |
1322 | NULL, | |
1323 | NULL, | |
1324 | osb->quota_rec); | |
1325 | osb->quota_rec = NULL; | |
1326 | } | |
1327 | } | |
1328 | ||
ccd979bd MF |
1329 | static int __ocfs2_recovery_thread(void *arg) |
1330 | { | |
2205363d | 1331 | int status, node_num, slot_num; |
ccd979bd | 1332 | struct ocfs2_super *osb = arg; |
553abd04 | 1333 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
2205363d JK |
1334 | int *rm_quota = NULL; |
1335 | int rm_quota_used = 0, i; | |
1336 | struct ocfs2_quota_recovery *qrec; | |
ccd979bd MF |
1337 | |
1338 | mlog_entry_void(); | |
1339 | ||
1340 | status = ocfs2_wait_on_mount(osb); | |
1341 | if (status < 0) { | |
1342 | goto bail; | |
1343 | } | |
1344 | ||
2205363d JK |
1345 | rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS); |
1346 | if (!rm_quota) { | |
1347 | status = -ENOMEM; | |
1348 | goto bail; | |
1349 | } | |
ccd979bd MF |
1350 | restart: |
1351 | status = ocfs2_super_lock(osb, 1); | |
1352 | if (status < 0) { | |
1353 | mlog_errno(status); | |
1354 | goto bail; | |
1355 | } | |
1356 | ||
9140db04 SE |
1357 | status = ocfs2_compute_replay_slots(osb); |
1358 | if (status < 0) | |
1359 | mlog_errno(status); | |
1360 | ||
1361 | /* queue recovery for our own slot */ | |
1362 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
1363 | NULL, NULL); | |
1364 | ||
553abd04 JB |
1365 | spin_lock(&osb->osb_lock); |
1366 | while (rm->rm_used) { | |
1367 | /* It's always safe to remove entry zero, as we won't | |
1368 | * clear it until ocfs2_recover_node() has succeeded. */ | |
1369 | node_num = rm->rm_entries[0]; | |
1370 | spin_unlock(&osb->osb_lock); | |
2205363d JK |
1371 | mlog(0, "checking node %d\n", node_num); |
1372 | slot_num = ocfs2_node_num_to_slot(osb, node_num); | |
1373 | if (slot_num == -ENOENT) { | |
1374 | status = 0; | |
1375 | mlog(0, "no slot for this node, so no recovery" | |
1376 | "required.\n"); | |
1377 | goto skip_recovery; | |
1378 | } | |
1379 | mlog(0, "node %d was using slot %d\n", node_num, slot_num); | |
1380 | ||
1381 | /* It is a bit subtle with quota recovery. We cannot do it | |
1382 | * immediately because we have to obtain cluster locks from | |
1383 | * quota files and we also don't want to just skip it because | |
1384 | * then quota usage would be out of sync until some node takes | |
1385 | * the slot. So we remember which nodes need quota recovery | |
1386 | * and when everything else is done, we recover quotas. */ | |
1387 | for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++); | |
1388 | if (i == rm_quota_used) | |
1389 | rm_quota[rm_quota_used++] = slot_num; | |
1390 | ||
1391 | status = ocfs2_recover_node(osb, node_num, slot_num); | |
1392 | skip_recovery: | |
553abd04 JB |
1393 | if (!status) { |
1394 | ocfs2_recovery_map_clear(osb, node_num); | |
1395 | } else { | |
ccd979bd MF |
1396 | mlog(ML_ERROR, |
1397 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1398 | status, node_num, | |
1399 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1400 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
ccd979bd MF |
1401 | } |
1402 | ||
553abd04 | 1403 | spin_lock(&osb->osb_lock); |
ccd979bd | 1404 | } |
553abd04 JB |
1405 | spin_unlock(&osb->osb_lock); |
1406 | mlog(0, "All nodes recovered\n"); | |
1407 | ||
539d8264 SM |
1408 | /* Refresh all journal recovery generations from disk */ |
1409 | status = ocfs2_check_journals_nolocks(osb); | |
1410 | status = (status == -EROFS) ? 0 : status; | |
1411 | if (status < 0) | |
1412 | mlog_errno(status); | |
1413 | ||
2205363d JK |
1414 | /* Now it is right time to recover quotas... We have to do this under |
1415 | * superblock lock so that noone can start using the slot (and crash) | |
1416 | * before we recover it */ | |
1417 | for (i = 0; i < rm_quota_used; i++) { | |
1418 | qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); | |
1419 | if (IS_ERR(qrec)) { | |
1420 | status = PTR_ERR(qrec); | |
1421 | mlog_errno(status); | |
1422 | continue; | |
1423 | } | |
1424 | ocfs2_queue_recovery_completion(osb->journal, rm_quota[i], | |
1425 | NULL, NULL, qrec); | |
1426 | } | |
1427 | ||
ccd979bd MF |
1428 | ocfs2_super_unlock(osb, 1); |
1429 | ||
9140db04 SE |
1430 | /* queue recovery for offline slots */ |
1431 | ocfs2_queue_replay_slots(osb); | |
ccd979bd MF |
1432 | |
1433 | bail: | |
c74ec2f7 | 1434 | mutex_lock(&osb->recovery_lock); |
553abd04 | 1435 | if (!status && !ocfs2_recovery_completed(osb)) { |
c74ec2f7 | 1436 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1437 | goto restart; |
1438 | } | |
1439 | ||
9140db04 | 1440 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1441 | osb->recovery_thread_task = NULL; |
1442 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1443 | wake_up(&osb->recovery_event); | |
1444 | ||
c74ec2f7 | 1445 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1446 | |
2205363d JK |
1447 | if (rm_quota) |
1448 | kfree(rm_quota); | |
1449 | ||
ccd979bd MF |
1450 | mlog_exit(status); |
1451 | /* no one is callint kthread_stop() for us so the kthread() api | |
1452 | * requires that we call do_exit(). And it isn't exported, but | |
1453 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1454 | complete_and_exit(NULL, status); | |
1455 | return status; | |
1456 | } | |
1457 | ||
1458 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1459 | { | |
1460 | mlog_entry("(node_num=%d, osb->node_num = %d)\n", | |
1461 | node_num, osb->node_num); | |
1462 | ||
c74ec2f7 | 1463 | mutex_lock(&osb->recovery_lock); |
ccd979bd MF |
1464 | if (osb->disable_recovery) |
1465 | goto out; | |
1466 | ||
1467 | /* People waiting on recovery will wait on | |
1468 | * the recovery map to empty. */ | |
553abd04 JB |
1469 | if (ocfs2_recovery_map_set(osb, node_num)) |
1470 | mlog(0, "node %d already in recovery map.\n", node_num); | |
ccd979bd MF |
1471 | |
1472 | mlog(0, "starting recovery thread...\n"); | |
1473 | ||
1474 | if (osb->recovery_thread_task) | |
1475 | goto out; | |
1476 | ||
1477 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
78427043 | 1478 | "ocfs2rec"); |
ccd979bd MF |
1479 | if (IS_ERR(osb->recovery_thread_task)) { |
1480 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1481 | osb->recovery_thread_task = NULL; | |
1482 | } | |
1483 | ||
1484 | out: | |
c74ec2f7 | 1485 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1486 | wake_up(&osb->recovery_event); |
1487 | ||
1488 | mlog_exit_void(); | |
1489 | } | |
1490 | ||
539d8264 SM |
1491 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1492 | int slot_num, | |
1493 | struct buffer_head **bh, | |
1494 | struct inode **ret_inode) | |
1495 | { | |
1496 | int status = -EACCES; | |
1497 | struct inode *inode = NULL; | |
1498 | ||
1499 | BUG_ON(slot_num >= osb->max_slots); | |
1500 | ||
1501 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1502 | slot_num); | |
1503 | if (!inode || is_bad_inode(inode)) { | |
1504 | mlog_errno(status); | |
1505 | goto bail; | |
1506 | } | |
1507 | SET_INODE_JOURNAL(inode); | |
1508 | ||
b657c95c | 1509 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
539d8264 SM |
1510 | if (status < 0) { |
1511 | mlog_errno(status); | |
1512 | goto bail; | |
1513 | } | |
1514 | ||
1515 | status = 0; | |
1516 | ||
1517 | bail: | |
1518 | if (inode) { | |
1519 | if (status || !ret_inode) | |
1520 | iput(inode); | |
1521 | else | |
1522 | *ret_inode = inode; | |
1523 | } | |
1524 | return status; | |
1525 | } | |
1526 | ||
ccd979bd MF |
1527 | /* Does the actual journal replay and marks the journal inode as |
1528 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1529 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1530 | int node_num, | |
1531 | int slot_num) | |
1532 | { | |
1533 | int status; | |
1534 | int got_lock = 0; | |
1535 | unsigned int flags; | |
1536 | struct inode *inode = NULL; | |
1537 | struct ocfs2_dinode *fe; | |
1538 | journal_t *journal = NULL; | |
1539 | struct buffer_head *bh = NULL; | |
539d8264 | 1540 | u32 slot_reco_gen; |
ccd979bd | 1541 | |
539d8264 SM |
1542 | status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); |
1543 | if (status) { | |
ccd979bd MF |
1544 | mlog_errno(status); |
1545 | goto done; | |
1546 | } | |
539d8264 SM |
1547 | |
1548 | fe = (struct ocfs2_dinode *)bh->b_data; | |
1549 | slot_reco_gen = ocfs2_get_recovery_generation(fe); | |
1550 | brelse(bh); | |
1551 | bh = NULL; | |
1552 | ||
1553 | /* | |
1554 | * As the fs recovery is asynchronous, there is a small chance that | |
1555 | * another node mounted (and recovered) the slot before the recovery | |
1556 | * thread could get the lock. To handle that, we dirty read the journal | |
1557 | * inode for that slot to get the recovery generation. If it is | |
1558 | * different than what we expected, the slot has been recovered. | |
1559 | * If not, it needs recovery. | |
1560 | */ | |
1561 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { | |
1562 | mlog(0, "Slot %u already recovered (old/new=%u/%u)\n", slot_num, | |
1563 | osb->slot_recovery_generations[slot_num], slot_reco_gen); | |
1564 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
1565 | status = -EBUSY; | |
ccd979bd MF |
1566 | goto done; |
1567 | } | |
539d8264 SM |
1568 | |
1569 | /* Continue with recovery as the journal has not yet been recovered */ | |
ccd979bd | 1570 | |
e63aecb6 | 1571 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd | 1572 | if (status < 0) { |
e63aecb6 | 1573 | mlog(0, "status returned from ocfs2_inode_lock=%d\n", status); |
ccd979bd MF |
1574 | if (status != -ERESTARTSYS) |
1575 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1576 | goto done; | |
1577 | } | |
1578 | got_lock = 1; | |
1579 | ||
1580 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1581 | ||
1582 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
539d8264 | 1583 | slot_reco_gen = ocfs2_get_recovery_generation(fe); |
ccd979bd MF |
1584 | |
1585 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
1586 | mlog(0, "No recovery required for node %d\n", node_num); | |
539d8264 SM |
1587 | /* Refresh recovery generation for the slot */ |
1588 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
ccd979bd MF |
1589 | goto done; |
1590 | } | |
1591 | ||
9140db04 SE |
1592 | /* we need to run complete recovery for offline orphan slots */ |
1593 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1594 | ||
ccd979bd MF |
1595 | mlog(ML_NOTICE, "Recovering node %d from slot %d on device (%u,%u)\n", |
1596 | node_num, slot_num, | |
1597 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1598 | ||
1599 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1600 | ||
1601 | status = ocfs2_force_read_journal(inode); | |
1602 | if (status < 0) { | |
1603 | mlog_errno(status); | |
1604 | goto done; | |
1605 | } | |
1606 | ||
1607 | mlog(0, "calling journal_init_inode\n"); | |
2b4e30fb | 1608 | journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
1609 | if (journal == NULL) { |
1610 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1611 | status = -EIO; | |
1612 | goto done; | |
1613 | } | |
1614 | ||
2b4e30fb | 1615 | status = jbd2_journal_load(journal); |
ccd979bd MF |
1616 | if (status < 0) { |
1617 | mlog_errno(status); | |
1618 | if (!igrab(inode)) | |
1619 | BUG(); | |
2b4e30fb | 1620 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1621 | goto done; |
1622 | } | |
1623 | ||
1624 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1625 | ||
1626 | /* wipe the journal */ | |
1627 | mlog(0, "flushing the journal.\n"); | |
2b4e30fb JB |
1628 | jbd2_journal_lock_updates(journal); |
1629 | status = jbd2_journal_flush(journal); | |
1630 | jbd2_journal_unlock_updates(journal); | |
ccd979bd MF |
1631 | if (status < 0) |
1632 | mlog_errno(status); | |
1633 | ||
1634 | /* This will mark the node clean */ | |
1635 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1636 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1637 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1638 | ||
539d8264 SM |
1639 | /* Increment recovery generation to indicate successful recovery */ |
1640 | ocfs2_bump_recovery_generation(fe); | |
1641 | osb->slot_recovery_generations[slot_num] = | |
1642 | ocfs2_get_recovery_generation(fe); | |
1643 | ||
13723d00 | 1644 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 1645 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); |
ccd979bd MF |
1646 | if (status < 0) |
1647 | mlog_errno(status); | |
1648 | ||
1649 | if (!igrab(inode)) | |
1650 | BUG(); | |
1651 | ||
2b4e30fb | 1652 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1653 | |
1654 | done: | |
1655 | /* drop the lock on this nodes journal */ | |
1656 | if (got_lock) | |
e63aecb6 | 1657 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1658 | |
1659 | if (inode) | |
1660 | iput(inode); | |
1661 | ||
a81cb88b | 1662 | brelse(bh); |
ccd979bd MF |
1663 | |
1664 | mlog_exit(status); | |
1665 | return status; | |
1666 | } | |
1667 | ||
1668 | /* | |
1669 | * Do the most important parts of node recovery: | |
1670 | * - Replay it's journal | |
1671 | * - Stamp a clean local allocator file | |
1672 | * - Stamp a clean truncate log | |
1673 | * - Mark the node clean | |
1674 | * | |
1675 | * If this function completes without error, a node in OCFS2 can be | |
1676 | * said to have been safely recovered. As a result, failure during the | |
1677 | * second part of a nodes recovery process (local alloc recovery) is | |
1678 | * far less concerning. | |
1679 | */ | |
1680 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 1681 | int node_num, int slot_num) |
ccd979bd MF |
1682 | { |
1683 | int status = 0; | |
ccd979bd MF |
1684 | struct ocfs2_dinode *la_copy = NULL; |
1685 | struct ocfs2_dinode *tl_copy = NULL; | |
1686 | ||
2205363d JK |
1687 | mlog_entry("(node_num=%d, slot_num=%d, osb->node_num = %d)\n", |
1688 | node_num, slot_num, osb->node_num); | |
ccd979bd MF |
1689 | |
1690 | /* Should not ever be called to recover ourselves -- in that | |
1691 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1692 | BUG_ON(osb->node_num == node_num); |
ccd979bd | 1693 | |
ccd979bd MF |
1694 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1695 | if (status < 0) { | |
539d8264 SM |
1696 | if (status == -EBUSY) { |
1697 | mlog(0, "Skipping recovery for slot %u (node %u) " | |
1698 | "as another node has recovered it\n", slot_num, | |
1699 | node_num); | |
1700 | status = 0; | |
1701 | goto done; | |
1702 | } | |
ccd979bd MF |
1703 | mlog_errno(status); |
1704 | goto done; | |
1705 | } | |
1706 | ||
1707 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1708 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1709 | if (status < 0) { | |
1710 | mlog_errno(status); | |
1711 | goto done; | |
1712 | } | |
1713 | ||
1714 | /* An error from begin_truncate_log_recovery is not | |
1715 | * serious enough to warrant halting the rest of | |
1716 | * recovery. */ | |
1717 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1718 | if (status < 0) | |
1719 | mlog_errno(status); | |
1720 | ||
1721 | /* Likewise, this would be a strange but ultimately not so | |
1722 | * harmful place to get an error... */ | |
8e8a4603 | 1723 | status = ocfs2_clear_slot(osb, slot_num); |
ccd979bd MF |
1724 | if (status < 0) |
1725 | mlog_errno(status); | |
1726 | ||
1727 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1728 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
2205363d | 1729 | tl_copy, NULL); |
ccd979bd MF |
1730 | |
1731 | status = 0; | |
1732 | done: | |
1733 | ||
1734 | mlog_exit(status); | |
1735 | return status; | |
1736 | } | |
1737 | ||
1738 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1739 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1740 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1741 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1742 | int slot_num) | |
1743 | { | |
1744 | int status, flags; | |
1745 | struct inode *inode = NULL; | |
1746 | ||
1747 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1748 | slot_num); | |
1749 | if (inode == NULL) { | |
1750 | mlog(ML_ERROR, "access error\n"); | |
1751 | status = -EACCES; | |
1752 | goto bail; | |
1753 | } | |
1754 | if (is_bad_inode(inode)) { | |
1755 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1756 | iput(inode); | |
1757 | inode = NULL; | |
1758 | status = -EACCES; | |
1759 | goto bail; | |
1760 | } | |
1761 | SET_INODE_JOURNAL(inode); | |
1762 | ||
1763 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
e63aecb6 | 1764 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
ccd979bd MF |
1765 | if (status < 0) { |
1766 | if (status != -EAGAIN) | |
1767 | mlog_errno(status); | |
1768 | goto bail; | |
1769 | } | |
1770 | ||
e63aecb6 | 1771 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1772 | bail: |
1773 | if (inode) | |
1774 | iput(inode); | |
1775 | ||
1776 | return status; | |
1777 | } | |
1778 | ||
1779 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1780 | * slot info struct has been updated from disk. */ | |
1781 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1782 | { | |
d85b20e4 JB |
1783 | unsigned int node_num; |
1784 | int status, i; | |
a1af7d15 | 1785 | u32 gen; |
539d8264 SM |
1786 | struct buffer_head *bh = NULL; |
1787 | struct ocfs2_dinode *di; | |
ccd979bd MF |
1788 | |
1789 | /* This is called with the super block cluster lock, so we | |
1790 | * know that the slot map can't change underneath us. */ | |
1791 | ||
d85b20e4 | 1792 | for (i = 0; i < osb->max_slots; i++) { |
539d8264 SM |
1793 | /* Read journal inode to get the recovery generation */ |
1794 | status = ocfs2_read_journal_inode(osb, i, &bh, NULL); | |
1795 | if (status) { | |
1796 | mlog_errno(status); | |
1797 | goto bail; | |
1798 | } | |
1799 | di = (struct ocfs2_dinode *)bh->b_data; | |
a1af7d15 | 1800 | gen = ocfs2_get_recovery_generation(di); |
539d8264 SM |
1801 | brelse(bh); |
1802 | bh = NULL; | |
1803 | ||
a1af7d15 MF |
1804 | spin_lock(&osb->osb_lock); |
1805 | osb->slot_recovery_generations[i] = gen; | |
1806 | ||
539d8264 SM |
1807 | mlog(0, "Slot %u recovery generation is %u\n", i, |
1808 | osb->slot_recovery_generations[i]); | |
1809 | ||
a1af7d15 MF |
1810 | if (i == osb->slot_num) { |
1811 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1812 | continue; |
a1af7d15 | 1813 | } |
d85b20e4 JB |
1814 | |
1815 | status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); | |
a1af7d15 MF |
1816 | if (status == -ENOENT) { |
1817 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1818 | continue; |
a1af7d15 | 1819 | } |
ccd979bd | 1820 | |
a1af7d15 MF |
1821 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1822 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1823 | continue; |
a1af7d15 | 1824 | } |
d85b20e4 | 1825 | spin_unlock(&osb->osb_lock); |
ccd979bd MF |
1826 | |
1827 | /* Ok, we have a slot occupied by another node which | |
1828 | * is not in the recovery map. We trylock his journal | |
1829 | * file here to test if he's alive. */ | |
1830 | status = ocfs2_trylock_journal(osb, i); | |
1831 | if (!status) { | |
1832 | /* Since we're called from mount, we know that | |
1833 | * the recovery thread can't race us on | |
1834 | * setting / checking the recovery bits. */ | |
1835 | ocfs2_recovery_thread(osb, node_num); | |
1836 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1837 | mlog_errno(status); | |
1838 | goto bail; | |
1839 | } | |
ccd979bd | 1840 | } |
ccd979bd MF |
1841 | |
1842 | status = 0; | |
1843 | bail: | |
1844 | mlog_exit(status); | |
1845 | return status; | |
1846 | } | |
1847 | ||
83273932 SE |
1848 | /* |
1849 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some | |
1850 | * randomness to the timeout to minimize multple nodes firing the timer at the | |
1851 | * same time. | |
1852 | */ | |
1853 | static inline unsigned long ocfs2_orphan_scan_timeout(void) | |
1854 | { | |
1855 | unsigned long time; | |
1856 | ||
1857 | get_random_bytes(&time, sizeof(time)); | |
1858 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); | |
1859 | return msecs_to_jiffies(time); | |
1860 | } | |
1861 | ||
1862 | /* | |
1863 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for | |
1864 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This | |
1865 | * is done to catch any orphans that are left over in orphan directories. | |
1866 | * | |
1867 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT | |
1868 | * seconds. It gets an EX lock on os_lockres and checks sequence number | |
1869 | * stored in LVB. If the sequence number has changed, it means some other | |
1870 | * node has done the scan. This node skips the scan and tracks the | |
1871 | * sequence number. If the sequence number didn't change, it means a scan | |
1872 | * hasn't happened. The node queues a scan and increments the | |
1873 | * sequence number in the LVB. | |
1874 | */ | |
1875 | void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) | |
1876 | { | |
1877 | struct ocfs2_orphan_scan *os; | |
1878 | int status, i; | |
1879 | u32 seqno = 0; | |
1880 | ||
1881 | os = &osb->osb_orphan_scan; | |
1882 | ||
692684e1 SM |
1883 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
1884 | goto out; | |
1885 | ||
df152c24 | 1886 | status = ocfs2_orphan_scan_lock(osb, &seqno); |
83273932 SE |
1887 | if (status < 0) { |
1888 | if (status != -EAGAIN) | |
1889 | mlog_errno(status); | |
1890 | goto out; | |
1891 | } | |
1892 | ||
692684e1 SM |
1893 | /* Do no queue the tasks if the volume is being umounted */ |
1894 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
1895 | goto unlock; | |
1896 | ||
83273932 SE |
1897 | if (os->os_seqno != seqno) { |
1898 | os->os_seqno = seqno; | |
1899 | goto unlock; | |
1900 | } | |
1901 | ||
1902 | for (i = 0; i < osb->max_slots; i++) | |
1903 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, | |
1904 | NULL); | |
1905 | /* | |
1906 | * We queued a recovery on orphan slots, increment the sequence | |
1907 | * number and update LVB so other node will skip the scan for a while | |
1908 | */ | |
1909 | seqno++; | |
15633a22 SE |
1910 | os->os_count++; |
1911 | os->os_scantime = CURRENT_TIME; | |
83273932 | 1912 | unlock: |
df152c24 | 1913 | ocfs2_orphan_scan_unlock(osb, seqno); |
83273932 SE |
1914 | out: |
1915 | return; | |
1916 | } | |
1917 | ||
1918 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ | |
1919 | void ocfs2_orphan_scan_work(struct work_struct *work) | |
1920 | { | |
1921 | struct ocfs2_orphan_scan *os; | |
1922 | struct ocfs2_super *osb; | |
1923 | ||
1924 | os = container_of(work, struct ocfs2_orphan_scan, | |
1925 | os_orphan_scan_work.work); | |
1926 | osb = os->os_osb; | |
1927 | ||
1928 | mutex_lock(&os->os_lock); | |
1929 | ocfs2_queue_orphan_scan(osb); | |
692684e1 SM |
1930 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) |
1931 | schedule_delayed_work(&os->os_orphan_scan_work, | |
1932 | ocfs2_orphan_scan_timeout()); | |
83273932 SE |
1933 | mutex_unlock(&os->os_lock); |
1934 | } | |
1935 | ||
1936 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) | |
1937 | { | |
1938 | struct ocfs2_orphan_scan *os; | |
1939 | ||
1940 | os = &osb->osb_orphan_scan; | |
df152c24 SM |
1941 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { |
1942 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1943 | mutex_lock(&os->os_lock); | |
1944 | cancel_delayed_work(&os->os_orphan_scan_work); | |
1945 | mutex_unlock(&os->os_lock); | |
1946 | } | |
83273932 SE |
1947 | } |
1948 | ||
df152c24 | 1949 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
83273932 SE |
1950 | { |
1951 | struct ocfs2_orphan_scan *os; | |
1952 | ||
1953 | os = &osb->osb_orphan_scan; | |
1954 | os->os_osb = osb; | |
15633a22 | 1955 | os->os_count = 0; |
3211949f | 1956 | os->os_seqno = 0; |
83273932 | 1957 | mutex_init(&os->os_lock); |
df152c24 | 1958 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
8b712cd5 | 1959 | } |
83273932 | 1960 | |
8b712cd5 JM |
1961 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
1962 | { | |
1963 | struct ocfs2_orphan_scan *os; | |
1964 | ||
1965 | os = &osb->osb_orphan_scan; | |
1966 | os->os_scantime = CURRENT_TIME; | |
df152c24 SM |
1967 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
1968 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1969 | else { | |
1970 | atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); | |
1971 | schedule_delayed_work(&os->os_orphan_scan_work, | |
1972 | ocfs2_orphan_scan_timeout()); | |
1973 | } | |
83273932 SE |
1974 | } |
1975 | ||
5eae5b96 MF |
1976 | struct ocfs2_orphan_filldir_priv { |
1977 | struct inode *head; | |
1978 | struct ocfs2_super *osb; | |
1979 | }; | |
1980 | ||
1981 | static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len, | |
1982 | loff_t pos, u64 ino, unsigned type) | |
1983 | { | |
1984 | struct ocfs2_orphan_filldir_priv *p = priv; | |
1985 | struct inode *iter; | |
1986 | ||
1987 | if (name_len == 1 && !strncmp(".", name, 1)) | |
1988 | return 0; | |
1989 | if (name_len == 2 && !strncmp("..", name, 2)) | |
1990 | return 0; | |
1991 | ||
1992 | /* Skip bad inodes so that recovery can continue */ | |
1993 | iter = ocfs2_iget(p->osb, ino, | |
5fa0613e | 1994 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); |
5eae5b96 MF |
1995 | if (IS_ERR(iter)) |
1996 | return 0; | |
1997 | ||
1998 | mlog(0, "queue orphan %llu\n", | |
1999 | (unsigned long long)OCFS2_I(iter)->ip_blkno); | |
2000 | /* No locking is required for the next_orphan queue as there | |
2001 | * is only ever a single process doing orphan recovery. */ | |
2002 | OCFS2_I(iter)->ip_next_orphan = p->head; | |
2003 | p->head = iter; | |
2004 | ||
2005 | return 0; | |
2006 | } | |
2007 | ||
b4df6ed8 MF |
2008 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
2009 | int slot, | |
2010 | struct inode **head) | |
ccd979bd | 2011 | { |
b4df6ed8 | 2012 | int status; |
ccd979bd | 2013 | struct inode *orphan_dir_inode = NULL; |
5eae5b96 MF |
2014 | struct ocfs2_orphan_filldir_priv priv; |
2015 | loff_t pos = 0; | |
2016 | ||
2017 | priv.osb = osb; | |
2018 | priv.head = *head; | |
ccd979bd MF |
2019 | |
2020 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2021 | ORPHAN_DIR_SYSTEM_INODE, | |
2022 | slot); | |
2023 | if (!orphan_dir_inode) { | |
2024 | status = -ENOENT; | |
2025 | mlog_errno(status); | |
b4df6ed8 MF |
2026 | return status; |
2027 | } | |
ccd979bd | 2028 | |
1b1dcc1b | 2029 | mutex_lock(&orphan_dir_inode->i_mutex); |
e63aecb6 | 2030 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
ccd979bd | 2031 | if (status < 0) { |
ccd979bd MF |
2032 | mlog_errno(status); |
2033 | goto out; | |
2034 | } | |
ccd979bd | 2035 | |
5eae5b96 MF |
2036 | status = ocfs2_dir_foreach(orphan_dir_inode, &pos, &priv, |
2037 | ocfs2_orphan_filldir); | |
2038 | if (status) { | |
2039 | mlog_errno(status); | |
a86370fb | 2040 | goto out_cluster; |
ccd979bd | 2041 | } |
ccd979bd | 2042 | |
5eae5b96 MF |
2043 | *head = priv.head; |
2044 | ||
a86370fb | 2045 | out_cluster: |
e63aecb6 | 2046 | ocfs2_inode_unlock(orphan_dir_inode, 0); |
b4df6ed8 MF |
2047 | out: |
2048 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 2049 | iput(orphan_dir_inode); |
b4df6ed8 MF |
2050 | return status; |
2051 | } | |
2052 | ||
2053 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
2054 | int slot) | |
2055 | { | |
2056 | int ret; | |
2057 | ||
2058 | spin_lock(&osb->osb_lock); | |
2059 | ret = !osb->osb_orphan_wipes[slot]; | |
2060 | spin_unlock(&osb->osb_lock); | |
2061 | return ret; | |
2062 | } | |
2063 | ||
2064 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
2065 | int slot) | |
2066 | { | |
2067 | spin_lock(&osb->osb_lock); | |
2068 | /* Mark ourselves such that new processes in delete_inode() | |
2069 | * know to quit early. */ | |
2070 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2071 | while (osb->osb_orphan_wipes[slot]) { | |
2072 | /* If any processes are already in the middle of an | |
2073 | * orphan wipe on this dir, then we need to wait for | |
2074 | * them. */ | |
2075 | spin_unlock(&osb->osb_lock); | |
2076 | wait_event_interruptible(osb->osb_wipe_event, | |
2077 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
2078 | spin_lock(&osb->osb_lock); | |
2079 | } | |
2080 | spin_unlock(&osb->osb_lock); | |
2081 | } | |
2082 | ||
2083 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
2084 | int slot) | |
2085 | { | |
2086 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2087 | } | |
2088 | ||
2089 | /* | |
2090 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
2091 | * must run during recovery. Our strategy here is to build a list of | |
2092 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
2093 | * (most) of the rest of the work. | |
2094 | * | |
2095 | * Orphan recovery can happen at any time, not just mount so we have a | |
2096 | * couple of extra considerations. | |
2097 | * | |
2098 | * - We grab as many inodes as we can under the orphan dir lock - | |
2099 | * doing iget() outside the orphan dir risks getting a reference on | |
2100 | * an invalid inode. | |
2101 | * - We must be sure not to deadlock with other processes on the | |
2102 | * system wanting to run delete_inode(). This can happen when they go | |
2103 | * to lock the orphan dir and the orphan recovery process attempts to | |
2104 | * iget() inside the orphan dir lock. This can be avoided by | |
2105 | * advertising our state to ocfs2_delete_inode(). | |
2106 | */ | |
2107 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
2108 | int slot) | |
2109 | { | |
2110 | int ret = 0; | |
2111 | struct inode *inode = NULL; | |
2112 | struct inode *iter; | |
2113 | struct ocfs2_inode_info *oi; | |
2114 | ||
2115 | mlog(0, "Recover inodes from orphan dir in slot %d\n", slot); | |
2116 | ||
2117 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
2118 | ret = ocfs2_queue_orphans(osb, slot, &inode); | |
2119 | ocfs2_clear_recovering_orphan_dir(osb, slot); | |
2120 | ||
2121 | /* Error here should be noted, but we want to continue with as | |
2122 | * many queued inodes as we've got. */ | |
2123 | if (ret) | |
2124 | mlog_errno(ret); | |
ccd979bd MF |
2125 | |
2126 | while (inode) { | |
2127 | oi = OCFS2_I(inode); | |
b0697053 | 2128 | mlog(0, "iput orphan %llu\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
2129 | |
2130 | iter = oi->ip_next_orphan; | |
2131 | ||
2132 | spin_lock(&oi->ip_lock); | |
34d024f8 MF |
2133 | /* The remote delete code may have set these on the |
2134 | * assumption that the other node would wipe them | |
2135 | * successfully. If they are still in the node's | |
2136 | * orphan dir, we need to reset that state. */ | |
ccd979bd MF |
2137 | oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); |
2138 | ||
2139 | /* Set the proper information to get us going into | |
2140 | * ocfs2_delete_inode. */ | |
2141 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
2142 | spin_unlock(&oi->ip_lock); |
2143 | ||
2144 | iput(inode); | |
2145 | ||
2146 | inode = iter; | |
2147 | } | |
2148 | ||
b4df6ed8 | 2149 | return ret; |
ccd979bd MF |
2150 | } |
2151 | ||
19ece546 | 2152 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
ccd979bd MF |
2153 | { |
2154 | /* This check is good because ocfs2 will wait on our recovery | |
2155 | * thread before changing it to something other than MOUNTED | |
2156 | * or DISABLED. */ | |
2157 | wait_event(osb->osb_mount_event, | |
19ece546 JK |
2158 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2159 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || | |
ccd979bd MF |
2160 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2161 | ||
2162 | /* If there's an error on mount, then we may never get to the | |
2163 | * MOUNTED flag, but this is set right before | |
2164 | * dismount_volume() so we can trust it. */ | |
2165 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
2166 | mlog(0, "mount error, exiting!\n"); | |
2167 | return -EBUSY; | |
2168 | } | |
2169 | ||
2170 | return 0; | |
2171 | } | |
2172 | ||
2173 | static int ocfs2_commit_thread(void *arg) | |
2174 | { | |
2175 | int status; | |
2176 | struct ocfs2_super *osb = arg; | |
2177 | struct ocfs2_journal *journal = osb->journal; | |
2178 | ||
2179 | /* we can trust j_num_trans here because _should_stop() is only set in | |
2180 | * shutdown and nobody other than ourselves should be able to start | |
2181 | * transactions. committing on shutdown might take a few iterations | |
2182 | * as final transactions put deleted inodes on the list */ | |
2183 | while (!(kthread_should_stop() && | |
2184 | atomic_read(&journal->j_num_trans) == 0)) { | |
2185 | ||
745ae8ba MF |
2186 | wait_event_interruptible(osb->checkpoint_event, |
2187 | atomic_read(&journal->j_num_trans) | |
2188 | || kthread_should_stop()); | |
ccd979bd MF |
2189 | |
2190 | status = ocfs2_commit_cache(osb); | |
2191 | if (status < 0) | |
2192 | mlog_errno(status); | |
2193 | ||
2194 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
2195 | mlog(ML_KTHREAD, | |
2196 | "commit_thread: %u transactions pending on " | |
2197 | "shutdown\n", | |
2198 | atomic_read(&journal->j_num_trans)); | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | return 0; | |
2203 | } | |
2204 | ||
539d8264 SM |
2205 | /* Reads all the journal inodes without taking any cluster locks. Used |
2206 | * for hard readonly access to determine whether any journal requires | |
2207 | * recovery. Also used to refresh the recovery generation numbers after | |
2208 | * a journal has been recovered by another node. | |
2209 | */ | |
ccd979bd MF |
2210 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2211 | { | |
2212 | int ret = 0; | |
2213 | unsigned int slot; | |
539d8264 | 2214 | struct buffer_head *di_bh = NULL; |
ccd979bd | 2215 | struct ocfs2_dinode *di; |
539d8264 | 2216 | int journal_dirty = 0; |
ccd979bd MF |
2217 | |
2218 | for(slot = 0; slot < osb->max_slots; slot++) { | |
539d8264 SM |
2219 | ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); |
2220 | if (ret) { | |
ccd979bd MF |
2221 | mlog_errno(ret); |
2222 | goto out; | |
2223 | } | |
2224 | ||
2225 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2226 | ||
539d8264 SM |
2227 | osb->slot_recovery_generations[slot] = |
2228 | ocfs2_get_recovery_generation(di); | |
2229 | ||
ccd979bd MF |
2230 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2231 | OCFS2_JOURNAL_DIRTY_FL) | |
539d8264 | 2232 | journal_dirty = 1; |
ccd979bd MF |
2233 | |
2234 | brelse(di_bh); | |
539d8264 | 2235 | di_bh = NULL; |
ccd979bd MF |
2236 | } |
2237 | ||
2238 | out: | |
539d8264 SM |
2239 | if (journal_dirty) |
2240 | ret = -EROFS; | |
ccd979bd MF |
2241 | return ret; |
2242 | } |