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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * journal.c | |
5 | * | |
6 | * Defines functions of journalling api | |
7 | * | |
8 | * Copyright (C) 2003, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/fs.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/highmem.h> | |
30 | #include <linux/kthread.h> | |
83273932 SE |
31 | #include <linux/time.h> |
32 | #include <linux/random.h> | |
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" |
0cf2f763 | 51 | #include "uptodate.h" |
2205363d | 52 | #include "quota.h" |
ccd979bd MF |
53 | |
54 | #include "buffer_head_io.h" | |
55 | ||
34af946a | 56 | DEFINE_SPINLOCK(trans_inc_lock); |
ccd979bd | 57 | |
83273932 SE |
58 | #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 |
59 | ||
ccd979bd MF |
60 | static int ocfs2_force_read_journal(struct inode *inode); |
61 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 62 | int node_num, int slot_num); |
ccd979bd MF |
63 | static int __ocfs2_recovery_thread(void *arg); |
64 | static int ocfs2_commit_cache(struct ocfs2_super *osb); | |
19ece546 | 65 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); |
ccd979bd | 66 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 67 | int dirty, int replayed); |
ccd979bd MF |
68 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
69 | int slot_num); | |
70 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
71 | int slot); | |
72 | static int ocfs2_commit_thread(void *arg); | |
9140db04 SE |
73 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
74 | int slot_num, | |
75 | struct ocfs2_dinode *la_dinode, | |
76 | struct ocfs2_dinode *tl_dinode, | |
77 | struct ocfs2_quota_recovery *qrec); | |
ccd979bd | 78 | |
19ece546 JK |
79 | static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) |
80 | { | |
81 | return __ocfs2_wait_on_mount(osb, 0); | |
82 | } | |
83 | ||
84 | static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) | |
85 | { | |
86 | return __ocfs2_wait_on_mount(osb, 1); | |
87 | } | |
88 | ||
9140db04 SE |
89 | /* |
90 | * This replay_map is to track online/offline slots, so we could recover | |
91 | * offline slots during recovery and mount | |
92 | */ | |
93 | ||
94 | enum ocfs2_replay_state { | |
95 | REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ | |
96 | REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ | |
97 | REPLAY_DONE /* Replay was already queued */ | |
98 | }; | |
99 | ||
100 | struct ocfs2_replay_map { | |
101 | unsigned int rm_slots; | |
102 | enum ocfs2_replay_state rm_state; | |
103 | unsigned char rm_replay_slots[0]; | |
104 | }; | |
105 | ||
106 | void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) | |
107 | { | |
108 | if (!osb->replay_map) | |
109 | return; | |
110 | ||
111 | /* If we've already queued the replay, we don't have any more to do */ | |
112 | if (osb->replay_map->rm_state == REPLAY_DONE) | |
113 | return; | |
114 | ||
115 | osb->replay_map->rm_state = state; | |
116 | } | |
117 | ||
118 | int ocfs2_compute_replay_slots(struct ocfs2_super *osb) | |
119 | { | |
120 | struct ocfs2_replay_map *replay_map; | |
121 | int i, node_num; | |
122 | ||
123 | /* If replay map is already set, we don't do it again */ | |
124 | if (osb->replay_map) | |
125 | return 0; | |
126 | ||
127 | replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + | |
128 | (osb->max_slots * sizeof(char)), GFP_KERNEL); | |
129 | ||
130 | if (!replay_map) { | |
131 | mlog_errno(-ENOMEM); | |
132 | return -ENOMEM; | |
133 | } | |
134 | ||
135 | spin_lock(&osb->osb_lock); | |
136 | ||
137 | replay_map->rm_slots = osb->max_slots; | |
138 | replay_map->rm_state = REPLAY_UNNEEDED; | |
139 | ||
140 | /* set rm_replay_slots for offline slot(s) */ | |
141 | for (i = 0; i < replay_map->rm_slots; i++) { | |
142 | if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT) | |
143 | replay_map->rm_replay_slots[i] = 1; | |
144 | } | |
145 | ||
146 | osb->replay_map = replay_map; | |
147 | spin_unlock(&osb->osb_lock); | |
148 | return 0; | |
149 | } | |
150 | ||
151 | void ocfs2_queue_replay_slots(struct ocfs2_super *osb) | |
152 | { | |
153 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
154 | int i; | |
155 | ||
156 | if (!replay_map) | |
157 | return; | |
158 | ||
159 | if (replay_map->rm_state != REPLAY_NEEDED) | |
160 | return; | |
161 | ||
162 | for (i = 0; i < replay_map->rm_slots; i++) | |
163 | if (replay_map->rm_replay_slots[i]) | |
164 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, | |
165 | NULL, NULL); | |
166 | replay_map->rm_state = REPLAY_DONE; | |
167 | } | |
168 | ||
169 | void ocfs2_free_replay_slots(struct ocfs2_super *osb) | |
170 | { | |
171 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
172 | ||
173 | if (!osb->replay_map) | |
174 | return; | |
175 | ||
176 | kfree(replay_map); | |
177 | osb->replay_map = NULL; | |
178 | } | |
179 | ||
553abd04 JB |
180 | int ocfs2_recovery_init(struct ocfs2_super *osb) |
181 | { | |
182 | struct ocfs2_recovery_map *rm; | |
183 | ||
184 | mutex_init(&osb->recovery_lock); | |
185 | osb->disable_recovery = 0; | |
186 | osb->recovery_thread_task = NULL; | |
187 | init_waitqueue_head(&osb->recovery_event); | |
188 | ||
189 | rm = kzalloc(sizeof(struct ocfs2_recovery_map) + | |
190 | osb->max_slots * sizeof(unsigned int), | |
191 | GFP_KERNEL); | |
192 | if (!rm) { | |
193 | mlog_errno(-ENOMEM); | |
194 | return -ENOMEM; | |
195 | } | |
196 | ||
197 | rm->rm_entries = (unsigned int *)((char *)rm + | |
198 | sizeof(struct ocfs2_recovery_map)); | |
199 | osb->recovery_map = rm; | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
205 | * memory barriers to make sure that we'll see the null task before | |
206 | * being woken up */ | |
207 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
208 | { | |
209 | mb(); | |
210 | return osb->recovery_thread_task != NULL; | |
211 | } | |
212 | ||
213 | void ocfs2_recovery_exit(struct ocfs2_super *osb) | |
214 | { | |
215 | struct ocfs2_recovery_map *rm; | |
216 | ||
217 | /* disable any new recovery threads and wait for any currently | |
218 | * running ones to exit. Do this before setting the vol_state. */ | |
219 | mutex_lock(&osb->recovery_lock); | |
220 | osb->disable_recovery = 1; | |
221 | mutex_unlock(&osb->recovery_lock); | |
222 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); | |
223 | ||
224 | /* At this point, we know that no more recovery threads can be | |
225 | * launched, so wait for any recovery completion work to | |
226 | * complete. */ | |
227 | flush_workqueue(ocfs2_wq); | |
228 | ||
229 | /* | |
230 | * Now that recovery is shut down, and the osb is about to be | |
231 | * freed, the osb_lock is not taken here. | |
232 | */ | |
233 | rm = osb->recovery_map; | |
234 | /* XXX: Should we bug if there are dirty entries? */ | |
235 | ||
236 | kfree(rm); | |
237 | } | |
238 | ||
239 | static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, | |
240 | unsigned int node_num) | |
241 | { | |
242 | int i; | |
243 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
244 | ||
245 | assert_spin_locked(&osb->osb_lock); | |
246 | ||
247 | for (i = 0; i < rm->rm_used; i++) { | |
248 | if (rm->rm_entries[i] == node_num) | |
249 | return 1; | |
250 | } | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | /* Behaves like test-and-set. Returns the previous value */ | |
256 | static int ocfs2_recovery_map_set(struct ocfs2_super *osb, | |
257 | unsigned int node_num) | |
258 | { | |
259 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
260 | ||
261 | spin_lock(&osb->osb_lock); | |
262 | if (__ocfs2_recovery_map_test(osb, node_num)) { | |
263 | spin_unlock(&osb->osb_lock); | |
264 | return 1; | |
265 | } | |
266 | ||
267 | /* XXX: Can this be exploited? Not from o2dlm... */ | |
268 | BUG_ON(rm->rm_used >= osb->max_slots); | |
269 | ||
270 | rm->rm_entries[rm->rm_used] = node_num; | |
271 | rm->rm_used++; | |
272 | spin_unlock(&osb->osb_lock); | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, | |
278 | unsigned int node_num) | |
279 | { | |
280 | int i; | |
281 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
282 | ||
283 | spin_lock(&osb->osb_lock); | |
284 | ||
285 | for (i = 0; i < rm->rm_used; i++) { | |
286 | if (rm->rm_entries[i] == node_num) | |
287 | break; | |
288 | } | |
289 | ||
290 | if (i < rm->rm_used) { | |
291 | /* XXX: be careful with the pointer math */ | |
292 | memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), | |
293 | (rm->rm_used - i - 1) * sizeof(unsigned int)); | |
294 | rm->rm_used--; | |
295 | } | |
296 | ||
297 | spin_unlock(&osb->osb_lock); | |
298 | } | |
299 | ||
ccd979bd MF |
300 | static int ocfs2_commit_cache(struct ocfs2_super *osb) |
301 | { | |
302 | int status = 0; | |
303 | unsigned int flushed; | |
ccd979bd MF |
304 | struct ocfs2_journal *journal = NULL; |
305 | ||
ccd979bd MF |
306 | journal = osb->journal; |
307 | ||
308 | /* Flush all pending commits and checkpoint the journal. */ | |
309 | down_write(&journal->j_trans_barrier); | |
310 | ||
311 | if (atomic_read(&journal->j_num_trans) == 0) { | |
312 | up_write(&journal->j_trans_barrier); | |
313 | mlog(0, "No transactions for me to flush!\n"); | |
314 | goto finally; | |
315 | } | |
316 | ||
2b4e30fb JB |
317 | jbd2_journal_lock_updates(journal->j_journal); |
318 | status = jbd2_journal_flush(journal->j_journal); | |
319 | jbd2_journal_unlock_updates(journal->j_journal); | |
ccd979bd MF |
320 | if (status < 0) { |
321 | up_write(&journal->j_trans_barrier); | |
322 | mlog_errno(status); | |
323 | goto finally; | |
324 | } | |
325 | ||
f9c57ada | 326 | ocfs2_inc_trans_id(journal); |
ccd979bd MF |
327 | |
328 | flushed = atomic_read(&journal->j_num_trans); | |
329 | atomic_set(&journal->j_num_trans, 0); | |
330 | up_write(&journal->j_trans_barrier); | |
331 | ||
332 | mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n", | |
333 | journal->j_trans_id, flushed); | |
334 | ||
34d024f8 | 335 | ocfs2_wake_downconvert_thread(osb); |
ccd979bd MF |
336 | wake_up(&journal->j_checkpointed); |
337 | finally: | |
ccd979bd MF |
338 | return status; |
339 | } | |
340 | ||
1fabe148 | 341 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
ccd979bd | 342 | { |
ccd979bd | 343 | journal_t *journal = osb->journal->j_journal; |
1fabe148 | 344 | handle_t *handle; |
ccd979bd | 345 | |
ebdec83b | 346 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd | 347 | |
65eff9cc MF |
348 | if (ocfs2_is_hard_readonly(osb)) |
349 | return ERR_PTR(-EROFS); | |
ccd979bd MF |
350 | |
351 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
352 | BUG_ON(max_buffs <= 0); | |
353 | ||
90e86a63 JK |
354 | /* Nested transaction? Just return the handle... */ |
355 | if (journal_current_handle()) | |
356 | return jbd2_journal_start(journal, max_buffs); | |
ccd979bd | 357 | |
ccd979bd MF |
358 | down_read(&osb->journal->j_trans_barrier); |
359 | ||
2b4e30fb | 360 | handle = jbd2_journal_start(journal, max_buffs); |
1fabe148 | 361 | if (IS_ERR(handle)) { |
ccd979bd MF |
362 | up_read(&osb->journal->j_trans_barrier); |
363 | ||
1fabe148 | 364 | mlog_errno(PTR_ERR(handle)); |
ccd979bd MF |
365 | |
366 | if (is_journal_aborted(journal)) { | |
367 | ocfs2_abort(osb->sb, "Detected aborted journal"); | |
1fabe148 | 368 | handle = ERR_PTR(-EROFS); |
ccd979bd | 369 | } |
c271c5c2 SM |
370 | } else { |
371 | if (!ocfs2_mount_local(osb)) | |
372 | atomic_inc(&(osb->journal->j_num_trans)); | |
373 | } | |
ccd979bd | 374 | |
ccd979bd | 375 | return handle; |
ccd979bd MF |
376 | } |
377 | ||
1fabe148 MF |
378 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
379 | handle_t *handle) | |
ccd979bd | 380 | { |
90e86a63 | 381 | int ret, nested; |
02dc1af4 | 382 | struct ocfs2_journal *journal = osb->journal; |
ccd979bd MF |
383 | |
384 | BUG_ON(!handle); | |
385 | ||
90e86a63 | 386 | nested = handle->h_ref > 1; |
2b4e30fb | 387 | ret = jbd2_journal_stop(handle); |
1fabe148 MF |
388 | if (ret < 0) |
389 | mlog_errno(ret); | |
ccd979bd | 390 | |
90e86a63 JK |
391 | if (!nested) |
392 | up_read(&journal->j_trans_barrier); | |
ccd979bd | 393 | |
1fabe148 | 394 | return ret; |
ccd979bd MF |
395 | } |
396 | ||
397 | /* | |
c901fb00 | 398 | * 'nblocks' is what you want to add to the current transaction. |
ccd979bd | 399 | * |
2b4e30fb | 400 | * This might call jbd2_journal_restart() which will commit dirty buffers |
e8aed345 MF |
401 | * and then restart the transaction. Before calling |
402 | * ocfs2_extend_trans(), any changed blocks should have been | |
403 | * dirtied. After calling it, all blocks which need to be changed must | |
404 | * go through another set of journal_access/journal_dirty calls. | |
405 | * | |
ccd979bd MF |
406 | * WARNING: This will not release any semaphores or disk locks taken |
407 | * during the transaction, so make sure they were taken *before* | |
408 | * start_trans or we'll have ordering deadlocks. | |
409 | * | |
410 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
411 | * good because transaction ids haven't yet been recorded on the | |
412 | * cluster locks associated with this handle. | |
413 | */ | |
1fc58146 | 414 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
ccd979bd | 415 | { |
c901fb00 | 416 | int status, old_nblocks; |
ccd979bd MF |
417 | |
418 | BUG_ON(!handle); | |
c901fb00 | 419 | BUG_ON(nblocks < 0); |
ccd979bd | 420 | |
c901fb00 TM |
421 | if (!nblocks) |
422 | return 0; | |
423 | ||
424 | old_nblocks = handle->h_buffer_credits; | |
ccd979bd MF |
425 | |
426 | mlog(0, "Trying to extend transaction by %d blocks\n", nblocks); | |
427 | ||
e407e397 | 428 | #ifdef CONFIG_OCFS2_DEBUG_FS |
0879c584 MF |
429 | status = 1; |
430 | #else | |
2b4e30fb | 431 | status = jbd2_journal_extend(handle, nblocks); |
ccd979bd MF |
432 | if (status < 0) { |
433 | mlog_errno(status); | |
434 | goto bail; | |
435 | } | |
0879c584 | 436 | #endif |
ccd979bd MF |
437 | |
438 | if (status > 0) { | |
2b4e30fb JB |
439 | mlog(0, |
440 | "jbd2_journal_extend failed, trying " | |
441 | "jbd2_journal_restart\n"); | |
c901fb00 TM |
442 | status = jbd2_journal_restart(handle, |
443 | old_nblocks + nblocks); | |
ccd979bd | 444 | if (status < 0) { |
ccd979bd MF |
445 | mlog_errno(status); |
446 | goto bail; | |
447 | } | |
01ddf1e1 | 448 | } |
ccd979bd MF |
449 | |
450 | status = 0; | |
451 | bail: | |
ccd979bd MF |
452 | return status; |
453 | } | |
454 | ||
50655ae9 JB |
455 | struct ocfs2_triggers { |
456 | struct jbd2_buffer_trigger_type ot_triggers; | |
457 | int ot_offset; | |
458 | }; | |
459 | ||
460 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) | |
461 | { | |
462 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); | |
463 | } | |
464 | ||
13ceef09 | 465 | static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
466 | struct buffer_head *bh, |
467 | void *data, size_t size) | |
468 | { | |
469 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); | |
470 | ||
471 | /* | |
472 | * We aren't guaranteed to have the superblock here, so we | |
473 | * must unconditionally compute the ecc data. | |
474 | * __ocfs2_journal_access() will only set the triggers if | |
475 | * metaecc is enabled. | |
476 | */ | |
477 | ocfs2_block_check_compute(data, size, data + ot->ot_offset); | |
478 | } | |
479 | ||
480 | /* | |
481 | * Quota blocks have their own trigger because the struct ocfs2_block_check | |
482 | * offset depends on the blocksize. | |
483 | */ | |
13ceef09 | 484 | static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
485 | struct buffer_head *bh, |
486 | void *data, size_t size) | |
487 | { | |
488 | struct ocfs2_disk_dqtrailer *dqt = | |
489 | ocfs2_block_dqtrailer(size, data); | |
490 | ||
491 | /* | |
492 | * We aren't guaranteed to have the superblock here, so we | |
493 | * must unconditionally compute the ecc data. | |
494 | * __ocfs2_journal_access() will only set the triggers if | |
495 | * metaecc is enabled. | |
496 | */ | |
497 | ocfs2_block_check_compute(data, size, &dqt->dq_check); | |
498 | } | |
499 | ||
c175a518 JB |
500 | /* |
501 | * Directory blocks also have their own trigger because the | |
502 | * struct ocfs2_block_check offset depends on the blocksize. | |
503 | */ | |
13ceef09 | 504 | static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
c175a518 JB |
505 | struct buffer_head *bh, |
506 | void *data, size_t size) | |
507 | { | |
508 | struct ocfs2_dir_block_trailer *trailer = | |
509 | ocfs2_dir_trailer_from_size(size, data); | |
510 | ||
511 | /* | |
512 | * We aren't guaranteed to have the superblock here, so we | |
513 | * must unconditionally compute the ecc data. | |
514 | * __ocfs2_journal_access() will only set the triggers if | |
515 | * metaecc is enabled. | |
516 | */ | |
517 | ocfs2_block_check_compute(data, size, &trailer->db_check); | |
518 | } | |
519 | ||
50655ae9 JB |
520 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
521 | struct buffer_head *bh) | |
522 | { | |
523 | mlog(ML_ERROR, | |
524 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " | |
525 | "bh->b_blocknr = %llu\n", | |
526 | (unsigned long)bh, | |
527 | (unsigned long long)bh->b_blocknr); | |
528 | ||
529 | /* We aren't guaranteed to have the superblock here - but if we | |
530 | * don't, it'll just crash. */ | |
531 | ocfs2_error(bh->b_assoc_map->host->i_sb, | |
532 | "JBD2 has aborted our journal, ocfs2 cannot continue\n"); | |
533 | } | |
534 | ||
535 | static struct ocfs2_triggers di_triggers = { | |
536 | .ot_triggers = { | |
13ceef09 | 537 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
538 | .t_abort = ocfs2_abort_trigger, |
539 | }, | |
540 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), | |
541 | }; | |
542 | ||
543 | static struct ocfs2_triggers eb_triggers = { | |
544 | .ot_triggers = { | |
13ceef09 | 545 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
546 | .t_abort = ocfs2_abort_trigger, |
547 | }, | |
548 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), | |
549 | }; | |
550 | ||
93c97087 TM |
551 | static struct ocfs2_triggers rb_triggers = { |
552 | .ot_triggers = { | |
13ceef09 | 553 | .t_frozen = ocfs2_frozen_trigger, |
93c97087 TM |
554 | .t_abort = ocfs2_abort_trigger, |
555 | }, | |
556 | .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), | |
557 | }; | |
558 | ||
50655ae9 JB |
559 | static struct ocfs2_triggers gd_triggers = { |
560 | .ot_triggers = { | |
13ceef09 | 561 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
562 | .t_abort = ocfs2_abort_trigger, |
563 | }, | |
564 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), | |
565 | }; | |
566 | ||
c175a518 JB |
567 | static struct ocfs2_triggers db_triggers = { |
568 | .ot_triggers = { | |
13ceef09 | 569 | .t_frozen = ocfs2_db_frozen_trigger, |
c175a518 JB |
570 | .t_abort = ocfs2_abort_trigger, |
571 | }, | |
572 | }; | |
573 | ||
50655ae9 JB |
574 | static struct ocfs2_triggers xb_triggers = { |
575 | .ot_triggers = { | |
13ceef09 | 576 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
577 | .t_abort = ocfs2_abort_trigger, |
578 | }, | |
579 | .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), | |
580 | }; | |
581 | ||
582 | static struct ocfs2_triggers dq_triggers = { | |
583 | .ot_triggers = { | |
13ceef09 | 584 | .t_frozen = ocfs2_dq_frozen_trigger, |
50655ae9 JB |
585 | .t_abort = ocfs2_abort_trigger, |
586 | }, | |
587 | }; | |
588 | ||
9b7895ef MF |
589 | static struct ocfs2_triggers dr_triggers = { |
590 | .ot_triggers = { | |
13ceef09 | 591 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
592 | .t_abort = ocfs2_abort_trigger, |
593 | }, | |
594 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), | |
595 | }; | |
596 | ||
597 | static struct ocfs2_triggers dl_triggers = { | |
598 | .ot_triggers = { | |
13ceef09 | 599 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
600 | .t_abort = ocfs2_abort_trigger, |
601 | }, | |
602 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), | |
603 | }; | |
604 | ||
50655ae9 | 605 | static int __ocfs2_journal_access(handle_t *handle, |
0cf2f763 | 606 | struct ocfs2_caching_info *ci, |
50655ae9 JB |
607 | struct buffer_head *bh, |
608 | struct ocfs2_triggers *triggers, | |
609 | int type) | |
ccd979bd MF |
610 | { |
611 | int status; | |
0cf2f763 JB |
612 | struct ocfs2_super *osb = |
613 | OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); | |
ccd979bd | 614 | |
0cf2f763 | 615 | BUG_ON(!ci || !ci->ci_ops); |
ccd979bd MF |
616 | BUG_ON(!handle); |
617 | BUG_ON(!bh); | |
ccd979bd | 618 | |
ef6b689b TM |
619 | mlog(0, "bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n", |
620 | (unsigned long long)bh->b_blocknr, type, | |
621 | (type == OCFS2_JOURNAL_ACCESS_CREATE) ? | |
622 | "OCFS2_JOURNAL_ACCESS_CREATE" : | |
623 | "OCFS2_JOURNAL_ACCESS_WRITE", | |
624 | bh->b_size); | |
ccd979bd MF |
625 | |
626 | /* we can safely remove this assertion after testing. */ | |
627 | if (!buffer_uptodate(bh)) { | |
628 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
629 | mlog(ML_ERROR, "b_blocknr=%llu\n", | |
630 | (unsigned long long)bh->b_blocknr); | |
631 | BUG(); | |
632 | } | |
633 | ||
0cf2f763 | 634 | /* Set the current transaction information on the ci so |
ccd979bd | 635 | * that the locking code knows whether it can drop it's locks |
0cf2f763 | 636 | * on this ci or not. We're protected from the commit |
ccd979bd MF |
637 | * thread updating the current transaction id until |
638 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
639 | * j_trans_barrier for us. */ | |
0cf2f763 | 640 | ocfs2_set_ci_lock_trans(osb->journal, ci); |
ccd979bd | 641 | |
0cf2f763 | 642 | ocfs2_metadata_cache_io_lock(ci); |
ccd979bd MF |
643 | switch (type) { |
644 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
645 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
2b4e30fb | 646 | status = jbd2_journal_get_write_access(handle, bh); |
ccd979bd MF |
647 | break; |
648 | ||
649 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
2b4e30fb | 650 | status = jbd2_journal_get_undo_access(handle, bh); |
ccd979bd MF |
651 | break; |
652 | ||
653 | default: | |
654 | status = -EINVAL; | |
af901ca1 | 655 | mlog(ML_ERROR, "Unknown access type!\n"); |
ccd979bd | 656 | } |
0cf2f763 | 657 | if (!status && ocfs2_meta_ecc(osb) && triggers) |
50655ae9 | 658 | jbd2_journal_set_triggers(bh, &triggers->ot_triggers); |
0cf2f763 | 659 | ocfs2_metadata_cache_io_unlock(ci); |
ccd979bd MF |
660 | |
661 | if (status < 0) | |
662 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
663 | status, type); | |
664 | ||
ccd979bd MF |
665 | return status; |
666 | } | |
667 | ||
0cf2f763 JB |
668 | int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, |
669 | struct buffer_head *bh, int type) | |
50655ae9 | 670 | { |
0cf2f763 | 671 | return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type); |
50655ae9 JB |
672 | } |
673 | ||
0cf2f763 | 674 | int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
675 | struct buffer_head *bh, int type) |
676 | { | |
0cf2f763 | 677 | return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type); |
50655ae9 JB |
678 | } |
679 | ||
93c97087 TM |
680 | int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, |
681 | struct buffer_head *bh, int type) | |
682 | { | |
683 | return __ocfs2_journal_access(handle, ci, bh, &rb_triggers, | |
684 | type); | |
685 | } | |
686 | ||
0cf2f763 | 687 | int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
688 | struct buffer_head *bh, int type) |
689 | { | |
0cf2f763 | 690 | return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type); |
50655ae9 JB |
691 | } |
692 | ||
0cf2f763 | 693 | int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
694 | struct buffer_head *bh, int type) |
695 | { | |
0cf2f763 | 696 | return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type); |
50655ae9 JB |
697 | } |
698 | ||
0cf2f763 | 699 | int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
700 | struct buffer_head *bh, int type) |
701 | { | |
0cf2f763 | 702 | return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type); |
50655ae9 JB |
703 | } |
704 | ||
0cf2f763 | 705 | int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
706 | struct buffer_head *bh, int type) |
707 | { | |
0cf2f763 | 708 | return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type); |
50655ae9 JB |
709 | } |
710 | ||
0cf2f763 | 711 | int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
712 | struct buffer_head *bh, int type) |
713 | { | |
0cf2f763 | 714 | return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type); |
9b7895ef MF |
715 | } |
716 | ||
0cf2f763 | 717 | int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
718 | struct buffer_head *bh, int type) |
719 | { | |
0cf2f763 | 720 | return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type); |
9b7895ef MF |
721 | } |
722 | ||
0cf2f763 | 723 | int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
724 | struct buffer_head *bh, int type) |
725 | { | |
0cf2f763 | 726 | return __ocfs2_journal_access(handle, ci, bh, NULL, type); |
50655ae9 JB |
727 | } |
728 | ||
ec20cec7 | 729 | void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) |
ccd979bd MF |
730 | { |
731 | int status; | |
732 | ||
ef6b689b TM |
733 | mlog(0, "(bh->b_blocknr=%llu)\n", |
734 | (unsigned long long)bh->b_blocknr); | |
ccd979bd | 735 | |
2b4e30fb | 736 | status = jbd2_journal_dirty_metadata(handle, bh); |
ec20cec7 | 737 | BUG_ON(status); |
ccd979bd MF |
738 | } |
739 | ||
2b4e30fb | 740 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
ccd979bd MF |
741 | |
742 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
743 | { | |
744 | journal_t *journal = osb->journal->j_journal; | |
d147b3d6 MF |
745 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
746 | ||
747 | if (osb->osb_commit_interval) | |
748 | commit_interval = osb->osb_commit_interval; | |
ccd979bd | 749 | |
a931da6a | 750 | write_lock(&journal->j_state_lock); |
d147b3d6 | 751 | journal->j_commit_interval = commit_interval; |
ccd979bd | 752 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
2b4e30fb | 753 | journal->j_flags |= JBD2_BARRIER; |
ccd979bd | 754 | else |
2b4e30fb | 755 | journal->j_flags &= ~JBD2_BARRIER; |
a931da6a | 756 | write_unlock(&journal->j_state_lock); |
ccd979bd MF |
757 | } |
758 | ||
759 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
760 | { | |
761 | int status = -1; | |
762 | struct inode *inode = NULL; /* the journal inode */ | |
763 | journal_t *j_journal = NULL; | |
764 | struct ocfs2_dinode *di = NULL; | |
765 | struct buffer_head *bh = NULL; | |
766 | struct ocfs2_super *osb; | |
e63aecb6 | 767 | int inode_lock = 0; |
ccd979bd | 768 | |
ccd979bd MF |
769 | BUG_ON(!journal); |
770 | ||
771 | osb = journal->j_osb; | |
772 | ||
773 | /* already have the inode for our journal */ | |
774 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
775 | osb->slot_num); | |
776 | if (inode == NULL) { | |
777 | status = -EACCES; | |
778 | mlog_errno(status); | |
779 | goto done; | |
780 | } | |
781 | if (is_bad_inode(inode)) { | |
782 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
783 | iput(inode); | |
784 | inode = NULL; | |
785 | status = -EACCES; | |
786 | goto done; | |
787 | } | |
788 | ||
789 | SET_INODE_JOURNAL(inode); | |
790 | OCFS2_I(inode)->ip_open_count++; | |
791 | ||
6eff5790 MF |
792 | /* Skip recovery waits here - journal inode metadata never |
793 | * changes in a live cluster so it can be considered an | |
794 | * exception to the rule. */ | |
e63aecb6 | 795 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd MF |
796 | if (status < 0) { |
797 | if (status != -ERESTARTSYS) | |
798 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
799 | goto done; | |
800 | } | |
801 | ||
e63aecb6 | 802 | inode_lock = 1; |
ccd979bd MF |
803 | di = (struct ocfs2_dinode *)bh->b_data; |
804 | ||
805 | if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) { | |
806 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", | |
807 | inode->i_size); | |
808 | status = -EINVAL; | |
809 | goto done; | |
810 | } | |
811 | ||
812 | mlog(0, "inode->i_size = %lld\n", inode->i_size); | |
5515eff8 AM |
813 | mlog(0, "inode->i_blocks = %llu\n", |
814 | (unsigned long long)inode->i_blocks); | |
ccd979bd MF |
815 | mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters); |
816 | ||
817 | /* call the kernels journal init function now */ | |
2b4e30fb | 818 | j_journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
819 | if (j_journal == NULL) { |
820 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
821 | status = -EINVAL; | |
822 | goto done; | |
823 | } | |
824 | ||
2b4e30fb | 825 | mlog(0, "Returned from jbd2_journal_init_inode\n"); |
ccd979bd MF |
826 | mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen); |
827 | ||
828 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
829 | OCFS2_JOURNAL_DIRTY_FL); | |
830 | ||
831 | journal->j_journal = j_journal; | |
832 | journal->j_inode = inode; | |
833 | journal->j_bh = bh; | |
834 | ||
835 | ocfs2_set_journal_params(osb); | |
836 | ||
837 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
838 | ||
839 | status = 0; | |
840 | done: | |
841 | if (status < 0) { | |
e63aecb6 MF |
842 | if (inode_lock) |
843 | ocfs2_inode_unlock(inode, 1); | |
a81cb88b | 844 | brelse(bh); |
ccd979bd MF |
845 | if (inode) { |
846 | OCFS2_I(inode)->ip_open_count--; | |
847 | iput(inode); | |
848 | } | |
849 | } | |
850 | ||
ccd979bd MF |
851 | return status; |
852 | } | |
853 | ||
539d8264 SM |
854 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
855 | { | |
856 | le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); | |
857 | } | |
858 | ||
859 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) | |
860 | { | |
861 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); | |
862 | } | |
863 | ||
ccd979bd | 864 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 865 | int dirty, int replayed) |
ccd979bd MF |
866 | { |
867 | int status; | |
868 | unsigned int flags; | |
869 | struct ocfs2_journal *journal = osb->journal; | |
870 | struct buffer_head *bh = journal->j_bh; | |
871 | struct ocfs2_dinode *fe; | |
872 | ||
ccd979bd | 873 | fe = (struct ocfs2_dinode *)bh->b_data; |
10995aa2 JB |
874 | |
875 | /* The journal bh on the osb always comes from ocfs2_journal_init() | |
876 | * and was validated there inside ocfs2_inode_lock_full(). It's a | |
877 | * code bug if we mess it up. */ | |
878 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
ccd979bd MF |
879 | |
880 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
881 | if (dirty) | |
882 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
883 | else | |
884 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
885 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
886 | ||
539d8264 SM |
887 | if (replayed) |
888 | ocfs2_bump_recovery_generation(fe); | |
889 | ||
13723d00 | 890 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 891 | status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); |
ccd979bd MF |
892 | if (status < 0) |
893 | mlog_errno(status); | |
894 | ||
ccd979bd MF |
895 | return status; |
896 | } | |
897 | ||
898 | /* | |
899 | * If the journal has been kmalloc'd it needs to be freed after this | |
900 | * call. | |
901 | */ | |
902 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
903 | { | |
904 | struct ocfs2_journal *journal = NULL; | |
905 | int status = 0; | |
906 | struct inode *inode = NULL; | |
907 | int num_running_trans = 0; | |
908 | ||
ebdec83b | 909 | BUG_ON(!osb); |
ccd979bd MF |
910 | |
911 | journal = osb->journal; | |
912 | if (!journal) | |
913 | goto done; | |
914 | ||
915 | inode = journal->j_inode; | |
916 | ||
917 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
918 | goto done; | |
919 | ||
2b4e30fb | 920 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
ccd979bd MF |
921 | if (!igrab(inode)) |
922 | BUG(); | |
923 | ||
924 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
925 | if (num_running_trans > 0) | |
926 | mlog(0, "Shutting down journal: must wait on %d " | |
927 | "running transactions!\n", | |
928 | num_running_trans); | |
929 | ||
930 | /* Do a commit_cache here. It will flush our journal, *and* | |
931 | * release any locks that are still held. | |
932 | * set the SHUTDOWN flag and release the trans lock. | |
933 | * the commit thread will take the trans lock for us below. */ | |
934 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
935 | ||
936 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
937 | * drop the trans_lock (which we want to hold until we | |
938 | * completely destroy the journal. */ | |
939 | if (osb->commit_task) { | |
940 | /* Wait for the commit thread */ | |
941 | mlog(0, "Waiting for ocfs2commit to exit....\n"); | |
942 | kthread_stop(osb->commit_task); | |
943 | osb->commit_task = NULL; | |
944 | } | |
945 | ||
946 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
947 | ||
c271c5c2 | 948 | if (ocfs2_mount_local(osb)) { |
2b4e30fb JB |
949 | jbd2_journal_lock_updates(journal->j_journal); |
950 | status = jbd2_journal_flush(journal->j_journal); | |
951 | jbd2_journal_unlock_updates(journal->j_journal); | |
c271c5c2 SM |
952 | if (status < 0) |
953 | mlog_errno(status); | |
954 | } | |
955 | ||
956 | if (status == 0) { | |
957 | /* | |
958 | * Do not toggle if flush was unsuccessful otherwise | |
959 | * will leave dirty metadata in a "clean" journal | |
960 | */ | |
539d8264 | 961 | status = ocfs2_journal_toggle_dirty(osb, 0, 0); |
c271c5c2 SM |
962 | if (status < 0) |
963 | mlog_errno(status); | |
964 | } | |
ccd979bd MF |
965 | |
966 | /* Shutdown the kernel journal system */ | |
2b4e30fb | 967 | jbd2_journal_destroy(journal->j_journal); |
ae0dff68 | 968 | journal->j_journal = NULL; |
ccd979bd MF |
969 | |
970 | OCFS2_I(inode)->ip_open_count--; | |
971 | ||
972 | /* unlock our journal */ | |
e63aecb6 | 973 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
974 | |
975 | brelse(journal->j_bh); | |
976 | journal->j_bh = NULL; | |
977 | ||
978 | journal->j_state = OCFS2_JOURNAL_FREE; | |
979 | ||
980 | // up_write(&journal->j_trans_barrier); | |
981 | done: | |
982 | if (inode) | |
983 | iput(inode); | |
ccd979bd MF |
984 | } |
985 | ||
986 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
987 | journal_t *journal, | |
988 | int slot) | |
989 | { | |
990 | int olderr; | |
991 | ||
2b4e30fb | 992 | olderr = jbd2_journal_errno(journal); |
ccd979bd MF |
993 | if (olderr) { |
994 | mlog(ML_ERROR, "File system error %d recorded in " | |
995 | "journal %u.\n", olderr, slot); | |
996 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
997 | sb->s_id); | |
998 | ||
2b4e30fb JB |
999 | jbd2_journal_ack_err(journal); |
1000 | jbd2_journal_clear_err(journal); | |
ccd979bd MF |
1001 | } |
1002 | } | |
1003 | ||
539d8264 | 1004 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
ccd979bd MF |
1005 | { |
1006 | int status = 0; | |
1007 | struct ocfs2_super *osb; | |
1008 | ||
b1f3550f | 1009 | BUG_ON(!journal); |
ccd979bd MF |
1010 | |
1011 | osb = journal->j_osb; | |
1012 | ||
2b4e30fb | 1013 | status = jbd2_journal_load(journal->j_journal); |
ccd979bd MF |
1014 | if (status < 0) { |
1015 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
1016 | goto done; | |
1017 | } | |
1018 | ||
1019 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
1020 | ||
539d8264 | 1021 | status = ocfs2_journal_toggle_dirty(osb, 1, replayed); |
ccd979bd MF |
1022 | if (status < 0) { |
1023 | mlog_errno(status); | |
1024 | goto done; | |
1025 | } | |
1026 | ||
1027 | /* Launch the commit thread */ | |
c271c5c2 SM |
1028 | if (!local) { |
1029 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, | |
1030 | "ocfs2cmt"); | |
1031 | if (IS_ERR(osb->commit_task)) { | |
1032 | status = PTR_ERR(osb->commit_task); | |
1033 | osb->commit_task = NULL; | |
1034 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " | |
1035 | "error=%d", status); | |
1036 | goto done; | |
1037 | } | |
1038 | } else | |
ccd979bd | 1039 | osb->commit_task = NULL; |
ccd979bd MF |
1040 | |
1041 | done: | |
ccd979bd MF |
1042 | return status; |
1043 | } | |
1044 | ||
1045 | ||
1046 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
1047 | * mark the journal clean */ | |
1048 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
1049 | { | |
1050 | int status; | |
1051 | ||
ebdec83b | 1052 | BUG_ON(!journal); |
ccd979bd | 1053 | |
2b4e30fb | 1054 | status = jbd2_journal_wipe(journal->j_journal, full); |
ccd979bd MF |
1055 | if (status < 0) { |
1056 | mlog_errno(status); | |
1057 | goto bail; | |
1058 | } | |
1059 | ||
539d8264 | 1060 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); |
ccd979bd MF |
1061 | if (status < 0) |
1062 | mlog_errno(status); | |
1063 | ||
1064 | bail: | |
ccd979bd MF |
1065 | return status; |
1066 | } | |
1067 | ||
553abd04 JB |
1068 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1069 | { | |
1070 | int empty; | |
1071 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
1072 | ||
1073 | spin_lock(&osb->osb_lock); | |
1074 | empty = (rm->rm_used == 0); | |
1075 | spin_unlock(&osb->osb_lock); | |
1076 | ||
1077 | return empty; | |
1078 | } | |
1079 | ||
1080 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) | |
1081 | { | |
1082 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); | |
1083 | } | |
1084 | ||
ccd979bd MF |
1085 | /* |
1086 | * JBD Might read a cached version of another nodes journal file. We | |
1087 | * don't want this as this file changes often and we get no | |
1088 | * notification on those changes. The only way to be sure that we've | |
1089 | * got the most up to date version of those blocks then is to force | |
1090 | * read them off disk. Just searching through the buffer cache won't | |
1091 | * work as there may be pages backing this file which are still marked | |
1092 | * up to date. We know things can't change on this file underneath us | |
1093 | * as we have the lock by now :) | |
1094 | */ | |
1095 | static int ocfs2_force_read_journal(struct inode *inode) | |
1096 | { | |
1097 | int status = 0; | |
4f902c37 | 1098 | int i; |
8110b073 | 1099 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
4f902c37 | 1100 | #define CONCURRENT_JOURNAL_FILL 32ULL |
ccd979bd MF |
1101 | struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; |
1102 | ||
ccd979bd MF |
1103 | memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); |
1104 | ||
8110b073 | 1105 | num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, inode->i_size); |
ccd979bd | 1106 | v_blkno = 0; |
8110b073 | 1107 | while (v_blkno < num_blocks) { |
ccd979bd | 1108 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
49cb8d2d | 1109 | &p_blkno, &p_blocks, NULL); |
ccd979bd MF |
1110 | if (status < 0) { |
1111 | mlog_errno(status); | |
1112 | goto bail; | |
1113 | } | |
1114 | ||
1115 | if (p_blocks > CONCURRENT_JOURNAL_FILL) | |
1116 | p_blocks = CONCURRENT_JOURNAL_FILL; | |
1117 | ||
dd4a2c2b MF |
1118 | /* We are reading journal data which should not |
1119 | * be put in the uptodate cache */ | |
da1e9098 JB |
1120 | status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), |
1121 | p_blkno, p_blocks, bhs); | |
ccd979bd MF |
1122 | if (status < 0) { |
1123 | mlog_errno(status); | |
1124 | goto bail; | |
1125 | } | |
1126 | ||
1127 | for(i = 0; i < p_blocks; i++) { | |
1128 | brelse(bhs[i]); | |
1129 | bhs[i] = NULL; | |
1130 | } | |
1131 | ||
1132 | v_blkno += p_blocks; | |
1133 | } | |
1134 | ||
1135 | bail: | |
1136 | for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) | |
a81cb88b | 1137 | brelse(bhs[i]); |
ccd979bd MF |
1138 | return status; |
1139 | } | |
1140 | ||
1141 | struct ocfs2_la_recovery_item { | |
1142 | struct list_head lri_list; | |
1143 | int lri_slot; | |
1144 | struct ocfs2_dinode *lri_la_dinode; | |
1145 | struct ocfs2_dinode *lri_tl_dinode; | |
2205363d | 1146 | struct ocfs2_quota_recovery *lri_qrec; |
ccd979bd MF |
1147 | }; |
1148 | ||
1149 | /* Does the second half of the recovery process. By this point, the | |
1150 | * node is marked clean and can actually be considered recovered, | |
1151 | * hence it's no longer in the recovery map, but there's still some | |
1152 | * cleanup we can do which shouldn't happen within the recovery thread | |
1153 | * as locking in that context becomes very difficult if we are to take | |
1154 | * recovering nodes into account. | |
1155 | * | |
1156 | * NOTE: This function can and will sleep on recovery of other nodes | |
1157 | * during cluster locking, just like any other ocfs2 process. | |
1158 | */ | |
c4028958 | 1159 | void ocfs2_complete_recovery(struct work_struct *work) |
ccd979bd MF |
1160 | { |
1161 | int ret; | |
c4028958 DH |
1162 | struct ocfs2_journal *journal = |
1163 | container_of(work, struct ocfs2_journal, j_recovery_work); | |
1164 | struct ocfs2_super *osb = journal->j_osb; | |
ccd979bd | 1165 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
800deef3 | 1166 | struct ocfs2_la_recovery_item *item, *n; |
2205363d | 1167 | struct ocfs2_quota_recovery *qrec; |
ccd979bd MF |
1168 | LIST_HEAD(tmp_la_list); |
1169 | ||
ccd979bd MF |
1170 | mlog(0, "completing recovery from keventd\n"); |
1171 | ||
1172 | spin_lock(&journal->j_lock); | |
1173 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
1174 | spin_unlock(&journal->j_lock); | |
1175 | ||
800deef3 | 1176 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
ccd979bd MF |
1177 | list_del_init(&item->lri_list); |
1178 | ||
1179 | mlog(0, "Complete recovery for slot %d\n", item->lri_slot); | |
1180 | ||
19ece546 JK |
1181 | ocfs2_wait_on_quotas(osb); |
1182 | ||
ccd979bd MF |
1183 | la_dinode = item->lri_la_dinode; |
1184 | if (la_dinode) { | |
b0697053 | 1185 | mlog(0, "Clean up local alloc %llu\n", |
1ca1a111 | 1186 | (unsigned long long)le64_to_cpu(la_dinode->i_blkno)); |
ccd979bd MF |
1187 | |
1188 | ret = ocfs2_complete_local_alloc_recovery(osb, | |
1189 | la_dinode); | |
1190 | if (ret < 0) | |
1191 | mlog_errno(ret); | |
1192 | ||
1193 | kfree(la_dinode); | |
1194 | } | |
1195 | ||
1196 | tl_dinode = item->lri_tl_dinode; | |
1197 | if (tl_dinode) { | |
b0697053 | 1198 | mlog(0, "Clean up truncate log %llu\n", |
1ca1a111 | 1199 | (unsigned long long)le64_to_cpu(tl_dinode->i_blkno)); |
ccd979bd MF |
1200 | |
1201 | ret = ocfs2_complete_truncate_log_recovery(osb, | |
1202 | tl_dinode); | |
1203 | if (ret < 0) | |
1204 | mlog_errno(ret); | |
1205 | ||
1206 | kfree(tl_dinode); | |
1207 | } | |
1208 | ||
1209 | ret = ocfs2_recover_orphans(osb, item->lri_slot); | |
1210 | if (ret < 0) | |
1211 | mlog_errno(ret); | |
1212 | ||
2205363d JK |
1213 | qrec = item->lri_qrec; |
1214 | if (qrec) { | |
1215 | mlog(0, "Recovering quota files"); | |
1216 | ret = ocfs2_finish_quota_recovery(osb, qrec, | |
1217 | item->lri_slot); | |
1218 | if (ret < 0) | |
1219 | mlog_errno(ret); | |
1220 | /* Recovery info is already freed now */ | |
1221 | } | |
1222 | ||
ccd979bd MF |
1223 | kfree(item); |
1224 | } | |
1225 | ||
1226 | mlog(0, "Recovery completion\n"); | |
ccd979bd MF |
1227 | } |
1228 | ||
1229 | /* NOTE: This function always eats your references to la_dinode and | |
1230 | * tl_dinode, either manually on error, or by passing them to | |
1231 | * ocfs2_complete_recovery */ | |
1232 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
1233 | int slot_num, | |
1234 | struct ocfs2_dinode *la_dinode, | |
2205363d JK |
1235 | struct ocfs2_dinode *tl_dinode, |
1236 | struct ocfs2_quota_recovery *qrec) | |
ccd979bd MF |
1237 | { |
1238 | struct ocfs2_la_recovery_item *item; | |
1239 | ||
afae00ab | 1240 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
1241 | if (!item) { |
1242 | /* Though we wish to avoid it, we are in fact safe in | |
1243 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
1244 | * than capable of reclaiming unused space. */ | |
1245 | if (la_dinode) | |
1246 | kfree(la_dinode); | |
1247 | ||
1248 | if (tl_dinode) | |
1249 | kfree(tl_dinode); | |
1250 | ||
2205363d JK |
1251 | if (qrec) |
1252 | ocfs2_free_quota_recovery(qrec); | |
1253 | ||
ccd979bd MF |
1254 | mlog_errno(-ENOMEM); |
1255 | return; | |
1256 | } | |
1257 | ||
1258 | INIT_LIST_HEAD(&item->lri_list); | |
1259 | item->lri_la_dinode = la_dinode; | |
1260 | item->lri_slot = slot_num; | |
1261 | item->lri_tl_dinode = tl_dinode; | |
2205363d | 1262 | item->lri_qrec = qrec; |
ccd979bd MF |
1263 | |
1264 | spin_lock(&journal->j_lock); | |
1265 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
1266 | queue_work(ocfs2_wq, &journal->j_recovery_work); | |
1267 | spin_unlock(&journal->j_lock); | |
1268 | } | |
1269 | ||
1270 | /* Called by the mount code to queue recovery the last part of | |
9140db04 | 1271 | * recovery for it's own and offline slot(s). */ |
ccd979bd MF |
1272 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1273 | { | |
1274 | struct ocfs2_journal *journal = osb->journal; | |
1275 | ||
9140db04 SE |
1276 | /* No need to queue up our truncate_log as regular cleanup will catch |
1277 | * that */ | |
1278 | ocfs2_queue_recovery_completion(journal, osb->slot_num, | |
1279 | osb->local_alloc_copy, NULL, NULL); | |
1280 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
ccd979bd | 1281 | |
9140db04 SE |
1282 | osb->local_alloc_copy = NULL; |
1283 | osb->dirty = 0; | |
1284 | ||
1285 | /* queue to recover orphan slots for all offline slots */ | |
1286 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1287 | ocfs2_queue_replay_slots(osb); | |
1288 | ocfs2_free_replay_slots(osb); | |
ccd979bd MF |
1289 | } |
1290 | ||
2205363d JK |
1291 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1292 | { | |
1293 | if (osb->quota_rec) { | |
1294 | ocfs2_queue_recovery_completion(osb->journal, | |
1295 | osb->slot_num, | |
1296 | NULL, | |
1297 | NULL, | |
1298 | osb->quota_rec); | |
1299 | osb->quota_rec = NULL; | |
1300 | } | |
1301 | } | |
1302 | ||
ccd979bd MF |
1303 | static int __ocfs2_recovery_thread(void *arg) |
1304 | { | |
2205363d | 1305 | int status, node_num, slot_num; |
ccd979bd | 1306 | struct ocfs2_super *osb = arg; |
553abd04 | 1307 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
2205363d JK |
1308 | int *rm_quota = NULL; |
1309 | int rm_quota_used = 0, i; | |
1310 | struct ocfs2_quota_recovery *qrec; | |
ccd979bd | 1311 | |
ccd979bd MF |
1312 | status = ocfs2_wait_on_mount(osb); |
1313 | if (status < 0) { | |
1314 | goto bail; | |
1315 | } | |
1316 | ||
2205363d JK |
1317 | rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS); |
1318 | if (!rm_quota) { | |
1319 | status = -ENOMEM; | |
1320 | goto bail; | |
1321 | } | |
ccd979bd MF |
1322 | restart: |
1323 | status = ocfs2_super_lock(osb, 1); | |
1324 | if (status < 0) { | |
1325 | mlog_errno(status); | |
1326 | goto bail; | |
1327 | } | |
1328 | ||
9140db04 SE |
1329 | status = ocfs2_compute_replay_slots(osb); |
1330 | if (status < 0) | |
1331 | mlog_errno(status); | |
1332 | ||
1333 | /* queue recovery for our own slot */ | |
1334 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
1335 | NULL, NULL); | |
1336 | ||
553abd04 JB |
1337 | spin_lock(&osb->osb_lock); |
1338 | while (rm->rm_used) { | |
1339 | /* It's always safe to remove entry zero, as we won't | |
1340 | * clear it until ocfs2_recover_node() has succeeded. */ | |
1341 | node_num = rm->rm_entries[0]; | |
1342 | spin_unlock(&osb->osb_lock); | |
2205363d JK |
1343 | mlog(0, "checking node %d\n", node_num); |
1344 | slot_num = ocfs2_node_num_to_slot(osb, node_num); | |
1345 | if (slot_num == -ENOENT) { | |
1346 | status = 0; | |
1347 | mlog(0, "no slot for this node, so no recovery" | |
1348 | "required.\n"); | |
1349 | goto skip_recovery; | |
1350 | } | |
1351 | mlog(0, "node %d was using slot %d\n", node_num, slot_num); | |
1352 | ||
1353 | /* It is a bit subtle with quota recovery. We cannot do it | |
1354 | * immediately because we have to obtain cluster locks from | |
1355 | * quota files and we also don't want to just skip it because | |
1356 | * then quota usage would be out of sync until some node takes | |
1357 | * the slot. So we remember which nodes need quota recovery | |
1358 | * and when everything else is done, we recover quotas. */ | |
1359 | for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++); | |
1360 | if (i == rm_quota_used) | |
1361 | rm_quota[rm_quota_used++] = slot_num; | |
1362 | ||
1363 | status = ocfs2_recover_node(osb, node_num, slot_num); | |
1364 | skip_recovery: | |
553abd04 JB |
1365 | if (!status) { |
1366 | ocfs2_recovery_map_clear(osb, node_num); | |
1367 | } else { | |
ccd979bd MF |
1368 | mlog(ML_ERROR, |
1369 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1370 | status, node_num, | |
1371 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1372 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
ccd979bd MF |
1373 | } |
1374 | ||
553abd04 | 1375 | spin_lock(&osb->osb_lock); |
ccd979bd | 1376 | } |
553abd04 JB |
1377 | spin_unlock(&osb->osb_lock); |
1378 | mlog(0, "All nodes recovered\n"); | |
1379 | ||
539d8264 SM |
1380 | /* Refresh all journal recovery generations from disk */ |
1381 | status = ocfs2_check_journals_nolocks(osb); | |
1382 | status = (status == -EROFS) ? 0 : status; | |
1383 | if (status < 0) | |
1384 | mlog_errno(status); | |
1385 | ||
2205363d JK |
1386 | /* Now it is right time to recover quotas... We have to do this under |
1387 | * superblock lock so that noone can start using the slot (and crash) | |
1388 | * before we recover it */ | |
1389 | for (i = 0; i < rm_quota_used; i++) { | |
1390 | qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); | |
1391 | if (IS_ERR(qrec)) { | |
1392 | status = PTR_ERR(qrec); | |
1393 | mlog_errno(status); | |
1394 | continue; | |
1395 | } | |
1396 | ocfs2_queue_recovery_completion(osb->journal, rm_quota[i], | |
1397 | NULL, NULL, qrec); | |
1398 | } | |
1399 | ||
ccd979bd MF |
1400 | ocfs2_super_unlock(osb, 1); |
1401 | ||
9140db04 SE |
1402 | /* queue recovery for offline slots */ |
1403 | ocfs2_queue_replay_slots(osb); | |
ccd979bd MF |
1404 | |
1405 | bail: | |
c74ec2f7 | 1406 | mutex_lock(&osb->recovery_lock); |
553abd04 | 1407 | if (!status && !ocfs2_recovery_completed(osb)) { |
c74ec2f7 | 1408 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1409 | goto restart; |
1410 | } | |
1411 | ||
9140db04 | 1412 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1413 | osb->recovery_thread_task = NULL; |
1414 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1415 | wake_up(&osb->recovery_event); | |
1416 | ||
c74ec2f7 | 1417 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1418 | |
2205363d JK |
1419 | if (rm_quota) |
1420 | kfree(rm_quota); | |
1421 | ||
ccd979bd MF |
1422 | /* no one is callint kthread_stop() for us so the kthread() api |
1423 | * requires that we call do_exit(). And it isn't exported, but | |
1424 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1425 | complete_and_exit(NULL, status); | |
1426 | return status; | |
1427 | } | |
1428 | ||
1429 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1430 | { | |
ef6b689b TM |
1431 | mlog(0, "(node_num=%d, osb->node_num = %d)\n", |
1432 | node_num, osb->node_num); | |
ccd979bd | 1433 | |
c74ec2f7 | 1434 | mutex_lock(&osb->recovery_lock); |
ccd979bd MF |
1435 | if (osb->disable_recovery) |
1436 | goto out; | |
1437 | ||
1438 | /* People waiting on recovery will wait on | |
1439 | * the recovery map to empty. */ | |
553abd04 JB |
1440 | if (ocfs2_recovery_map_set(osb, node_num)) |
1441 | mlog(0, "node %d already in recovery map.\n", node_num); | |
ccd979bd MF |
1442 | |
1443 | mlog(0, "starting recovery thread...\n"); | |
1444 | ||
1445 | if (osb->recovery_thread_task) | |
1446 | goto out; | |
1447 | ||
1448 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
78427043 | 1449 | "ocfs2rec"); |
ccd979bd MF |
1450 | if (IS_ERR(osb->recovery_thread_task)) { |
1451 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1452 | osb->recovery_thread_task = NULL; | |
1453 | } | |
1454 | ||
1455 | out: | |
c74ec2f7 | 1456 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1457 | wake_up(&osb->recovery_event); |
ccd979bd MF |
1458 | } |
1459 | ||
539d8264 SM |
1460 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1461 | int slot_num, | |
1462 | struct buffer_head **bh, | |
1463 | struct inode **ret_inode) | |
1464 | { | |
1465 | int status = -EACCES; | |
1466 | struct inode *inode = NULL; | |
1467 | ||
1468 | BUG_ON(slot_num >= osb->max_slots); | |
1469 | ||
1470 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1471 | slot_num); | |
1472 | if (!inode || is_bad_inode(inode)) { | |
1473 | mlog_errno(status); | |
1474 | goto bail; | |
1475 | } | |
1476 | SET_INODE_JOURNAL(inode); | |
1477 | ||
b657c95c | 1478 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
539d8264 SM |
1479 | if (status < 0) { |
1480 | mlog_errno(status); | |
1481 | goto bail; | |
1482 | } | |
1483 | ||
1484 | status = 0; | |
1485 | ||
1486 | bail: | |
1487 | if (inode) { | |
1488 | if (status || !ret_inode) | |
1489 | iput(inode); | |
1490 | else | |
1491 | *ret_inode = inode; | |
1492 | } | |
1493 | return status; | |
1494 | } | |
1495 | ||
ccd979bd MF |
1496 | /* Does the actual journal replay and marks the journal inode as |
1497 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1498 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1499 | int node_num, | |
1500 | int slot_num) | |
1501 | { | |
1502 | int status; | |
1503 | int got_lock = 0; | |
1504 | unsigned int flags; | |
1505 | struct inode *inode = NULL; | |
1506 | struct ocfs2_dinode *fe; | |
1507 | journal_t *journal = NULL; | |
1508 | struct buffer_head *bh = NULL; | |
539d8264 | 1509 | u32 slot_reco_gen; |
ccd979bd | 1510 | |
539d8264 SM |
1511 | status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); |
1512 | if (status) { | |
ccd979bd MF |
1513 | mlog_errno(status); |
1514 | goto done; | |
1515 | } | |
539d8264 SM |
1516 | |
1517 | fe = (struct ocfs2_dinode *)bh->b_data; | |
1518 | slot_reco_gen = ocfs2_get_recovery_generation(fe); | |
1519 | brelse(bh); | |
1520 | bh = NULL; | |
1521 | ||
1522 | /* | |
1523 | * As the fs recovery is asynchronous, there is a small chance that | |
1524 | * another node mounted (and recovered) the slot before the recovery | |
1525 | * thread could get the lock. To handle that, we dirty read the journal | |
1526 | * inode for that slot to get the recovery generation. If it is | |
1527 | * different than what we expected, the slot has been recovered. | |
1528 | * If not, it needs recovery. | |
1529 | */ | |
1530 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { | |
1531 | mlog(0, "Slot %u already recovered (old/new=%u/%u)\n", slot_num, | |
1532 | osb->slot_recovery_generations[slot_num], slot_reco_gen); | |
1533 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
1534 | status = -EBUSY; | |
ccd979bd MF |
1535 | goto done; |
1536 | } | |
539d8264 SM |
1537 | |
1538 | /* Continue with recovery as the journal has not yet been recovered */ | |
ccd979bd | 1539 | |
e63aecb6 | 1540 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd | 1541 | if (status < 0) { |
e63aecb6 | 1542 | mlog(0, "status returned from ocfs2_inode_lock=%d\n", status); |
ccd979bd MF |
1543 | if (status != -ERESTARTSYS) |
1544 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1545 | goto done; | |
1546 | } | |
1547 | got_lock = 1; | |
1548 | ||
1549 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1550 | ||
1551 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
539d8264 | 1552 | slot_reco_gen = ocfs2_get_recovery_generation(fe); |
ccd979bd MF |
1553 | |
1554 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
1555 | mlog(0, "No recovery required for node %d\n", node_num); | |
539d8264 SM |
1556 | /* Refresh recovery generation for the slot */ |
1557 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
ccd979bd MF |
1558 | goto done; |
1559 | } | |
1560 | ||
9140db04 SE |
1561 | /* we need to run complete recovery for offline orphan slots */ |
1562 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1563 | ||
ccd979bd MF |
1564 | mlog(ML_NOTICE, "Recovering node %d from slot %d on device (%u,%u)\n", |
1565 | node_num, slot_num, | |
1566 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1567 | ||
1568 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1569 | ||
1570 | status = ocfs2_force_read_journal(inode); | |
1571 | if (status < 0) { | |
1572 | mlog_errno(status); | |
1573 | goto done; | |
1574 | } | |
1575 | ||
1576 | mlog(0, "calling journal_init_inode\n"); | |
2b4e30fb | 1577 | journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
1578 | if (journal == NULL) { |
1579 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1580 | status = -EIO; | |
1581 | goto done; | |
1582 | } | |
1583 | ||
2b4e30fb | 1584 | status = jbd2_journal_load(journal); |
ccd979bd MF |
1585 | if (status < 0) { |
1586 | mlog_errno(status); | |
1587 | if (!igrab(inode)) | |
1588 | BUG(); | |
2b4e30fb | 1589 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1590 | goto done; |
1591 | } | |
1592 | ||
1593 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1594 | ||
1595 | /* wipe the journal */ | |
1596 | mlog(0, "flushing the journal.\n"); | |
2b4e30fb JB |
1597 | jbd2_journal_lock_updates(journal); |
1598 | status = jbd2_journal_flush(journal); | |
1599 | jbd2_journal_unlock_updates(journal); | |
ccd979bd MF |
1600 | if (status < 0) |
1601 | mlog_errno(status); | |
1602 | ||
1603 | /* This will mark the node clean */ | |
1604 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1605 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1606 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1607 | ||
539d8264 SM |
1608 | /* Increment recovery generation to indicate successful recovery */ |
1609 | ocfs2_bump_recovery_generation(fe); | |
1610 | osb->slot_recovery_generations[slot_num] = | |
1611 | ocfs2_get_recovery_generation(fe); | |
1612 | ||
13723d00 | 1613 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 1614 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); |
ccd979bd MF |
1615 | if (status < 0) |
1616 | mlog_errno(status); | |
1617 | ||
1618 | if (!igrab(inode)) | |
1619 | BUG(); | |
1620 | ||
2b4e30fb | 1621 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1622 | |
1623 | done: | |
1624 | /* drop the lock on this nodes journal */ | |
1625 | if (got_lock) | |
e63aecb6 | 1626 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1627 | |
1628 | if (inode) | |
1629 | iput(inode); | |
1630 | ||
a81cb88b | 1631 | brelse(bh); |
ccd979bd | 1632 | |
ccd979bd MF |
1633 | return status; |
1634 | } | |
1635 | ||
1636 | /* | |
1637 | * Do the most important parts of node recovery: | |
1638 | * - Replay it's journal | |
1639 | * - Stamp a clean local allocator file | |
1640 | * - Stamp a clean truncate log | |
1641 | * - Mark the node clean | |
1642 | * | |
1643 | * If this function completes without error, a node in OCFS2 can be | |
1644 | * said to have been safely recovered. As a result, failure during the | |
1645 | * second part of a nodes recovery process (local alloc recovery) is | |
1646 | * far less concerning. | |
1647 | */ | |
1648 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 1649 | int node_num, int slot_num) |
ccd979bd MF |
1650 | { |
1651 | int status = 0; | |
ccd979bd MF |
1652 | struct ocfs2_dinode *la_copy = NULL; |
1653 | struct ocfs2_dinode *tl_copy = NULL; | |
1654 | ||
ef6b689b TM |
1655 | mlog(0, "(node_num=%d, slot_num=%d, osb->node_num = %d)\n", |
1656 | node_num, slot_num, osb->node_num); | |
ccd979bd MF |
1657 | |
1658 | /* Should not ever be called to recover ourselves -- in that | |
1659 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1660 | BUG_ON(osb->node_num == node_num); |
ccd979bd | 1661 | |
ccd979bd MF |
1662 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1663 | if (status < 0) { | |
539d8264 SM |
1664 | if (status == -EBUSY) { |
1665 | mlog(0, "Skipping recovery for slot %u (node %u) " | |
1666 | "as another node has recovered it\n", slot_num, | |
1667 | node_num); | |
1668 | status = 0; | |
1669 | goto done; | |
1670 | } | |
ccd979bd MF |
1671 | mlog_errno(status); |
1672 | goto done; | |
1673 | } | |
1674 | ||
1675 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1676 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1677 | if (status < 0) { | |
1678 | mlog_errno(status); | |
1679 | goto done; | |
1680 | } | |
1681 | ||
1682 | /* An error from begin_truncate_log_recovery is not | |
1683 | * serious enough to warrant halting the rest of | |
1684 | * recovery. */ | |
1685 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1686 | if (status < 0) | |
1687 | mlog_errno(status); | |
1688 | ||
1689 | /* Likewise, this would be a strange but ultimately not so | |
1690 | * harmful place to get an error... */ | |
8e8a4603 | 1691 | status = ocfs2_clear_slot(osb, slot_num); |
ccd979bd MF |
1692 | if (status < 0) |
1693 | mlog_errno(status); | |
1694 | ||
1695 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1696 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
2205363d | 1697 | tl_copy, NULL); |
ccd979bd MF |
1698 | |
1699 | status = 0; | |
1700 | done: | |
1701 | ||
ccd979bd MF |
1702 | return status; |
1703 | } | |
1704 | ||
1705 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1706 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1707 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1708 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1709 | int slot_num) | |
1710 | { | |
1711 | int status, flags; | |
1712 | struct inode *inode = NULL; | |
1713 | ||
1714 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1715 | slot_num); | |
1716 | if (inode == NULL) { | |
1717 | mlog(ML_ERROR, "access error\n"); | |
1718 | status = -EACCES; | |
1719 | goto bail; | |
1720 | } | |
1721 | if (is_bad_inode(inode)) { | |
1722 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1723 | iput(inode); | |
1724 | inode = NULL; | |
1725 | status = -EACCES; | |
1726 | goto bail; | |
1727 | } | |
1728 | SET_INODE_JOURNAL(inode); | |
1729 | ||
1730 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
e63aecb6 | 1731 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
ccd979bd MF |
1732 | if (status < 0) { |
1733 | if (status != -EAGAIN) | |
1734 | mlog_errno(status); | |
1735 | goto bail; | |
1736 | } | |
1737 | ||
e63aecb6 | 1738 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1739 | bail: |
1740 | if (inode) | |
1741 | iput(inode); | |
1742 | ||
1743 | return status; | |
1744 | } | |
1745 | ||
1746 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1747 | * slot info struct has been updated from disk. */ | |
1748 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1749 | { | |
d85b20e4 JB |
1750 | unsigned int node_num; |
1751 | int status, i; | |
a1af7d15 | 1752 | u32 gen; |
539d8264 SM |
1753 | struct buffer_head *bh = NULL; |
1754 | struct ocfs2_dinode *di; | |
ccd979bd MF |
1755 | |
1756 | /* This is called with the super block cluster lock, so we | |
1757 | * know that the slot map can't change underneath us. */ | |
1758 | ||
d85b20e4 | 1759 | for (i = 0; i < osb->max_slots; i++) { |
539d8264 SM |
1760 | /* Read journal inode to get the recovery generation */ |
1761 | status = ocfs2_read_journal_inode(osb, i, &bh, NULL); | |
1762 | if (status) { | |
1763 | mlog_errno(status); | |
1764 | goto bail; | |
1765 | } | |
1766 | di = (struct ocfs2_dinode *)bh->b_data; | |
a1af7d15 | 1767 | gen = ocfs2_get_recovery_generation(di); |
539d8264 SM |
1768 | brelse(bh); |
1769 | bh = NULL; | |
1770 | ||
a1af7d15 MF |
1771 | spin_lock(&osb->osb_lock); |
1772 | osb->slot_recovery_generations[i] = gen; | |
1773 | ||
539d8264 SM |
1774 | mlog(0, "Slot %u recovery generation is %u\n", i, |
1775 | osb->slot_recovery_generations[i]); | |
1776 | ||
a1af7d15 MF |
1777 | if (i == osb->slot_num) { |
1778 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1779 | continue; |
a1af7d15 | 1780 | } |
d85b20e4 JB |
1781 | |
1782 | status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); | |
a1af7d15 MF |
1783 | if (status == -ENOENT) { |
1784 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1785 | continue; |
a1af7d15 | 1786 | } |
ccd979bd | 1787 | |
a1af7d15 MF |
1788 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1789 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1790 | continue; |
a1af7d15 | 1791 | } |
d85b20e4 | 1792 | spin_unlock(&osb->osb_lock); |
ccd979bd MF |
1793 | |
1794 | /* Ok, we have a slot occupied by another node which | |
1795 | * is not in the recovery map. We trylock his journal | |
1796 | * file here to test if he's alive. */ | |
1797 | status = ocfs2_trylock_journal(osb, i); | |
1798 | if (!status) { | |
1799 | /* Since we're called from mount, we know that | |
1800 | * the recovery thread can't race us on | |
1801 | * setting / checking the recovery bits. */ | |
1802 | ocfs2_recovery_thread(osb, node_num); | |
1803 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1804 | mlog_errno(status); | |
1805 | goto bail; | |
1806 | } | |
ccd979bd | 1807 | } |
ccd979bd MF |
1808 | |
1809 | status = 0; | |
1810 | bail: | |
ccd979bd MF |
1811 | return status; |
1812 | } | |
1813 | ||
83273932 SE |
1814 | /* |
1815 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some | |
1816 | * randomness to the timeout to minimize multple nodes firing the timer at the | |
1817 | * same time. | |
1818 | */ | |
1819 | static inline unsigned long ocfs2_orphan_scan_timeout(void) | |
1820 | { | |
1821 | unsigned long time; | |
1822 | ||
1823 | get_random_bytes(&time, sizeof(time)); | |
1824 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); | |
1825 | return msecs_to_jiffies(time); | |
1826 | } | |
1827 | ||
1828 | /* | |
1829 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for | |
1830 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This | |
1831 | * is done to catch any orphans that are left over in orphan directories. | |
1832 | * | |
1833 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT | |
1834 | * seconds. It gets an EX lock on os_lockres and checks sequence number | |
1835 | * stored in LVB. If the sequence number has changed, it means some other | |
1836 | * node has done the scan. This node skips the scan and tracks the | |
1837 | * sequence number. If the sequence number didn't change, it means a scan | |
1838 | * hasn't happened. The node queues a scan and increments the | |
1839 | * sequence number in the LVB. | |
1840 | */ | |
1841 | void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) | |
1842 | { | |
1843 | struct ocfs2_orphan_scan *os; | |
1844 | int status, i; | |
1845 | u32 seqno = 0; | |
1846 | ||
1847 | os = &osb->osb_orphan_scan; | |
1848 | ||
3c3f20c9 TM |
1849 | mlog(0, "Begin orphan scan\n"); |
1850 | ||
692684e1 SM |
1851 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
1852 | goto out; | |
1853 | ||
df152c24 | 1854 | status = ocfs2_orphan_scan_lock(osb, &seqno); |
83273932 SE |
1855 | if (status < 0) { |
1856 | if (status != -EAGAIN) | |
1857 | mlog_errno(status); | |
1858 | goto out; | |
1859 | } | |
1860 | ||
692684e1 SM |
1861 | /* Do no queue the tasks if the volume is being umounted */ |
1862 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
1863 | goto unlock; | |
1864 | ||
83273932 SE |
1865 | if (os->os_seqno != seqno) { |
1866 | os->os_seqno = seqno; | |
1867 | goto unlock; | |
1868 | } | |
1869 | ||
1870 | for (i = 0; i < osb->max_slots; i++) | |
1871 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, | |
1872 | NULL); | |
1873 | /* | |
1874 | * We queued a recovery on orphan slots, increment the sequence | |
1875 | * number and update LVB so other node will skip the scan for a while | |
1876 | */ | |
1877 | seqno++; | |
15633a22 SE |
1878 | os->os_count++; |
1879 | os->os_scantime = CURRENT_TIME; | |
83273932 | 1880 | unlock: |
df152c24 | 1881 | ocfs2_orphan_scan_unlock(osb, seqno); |
83273932 | 1882 | out: |
3c3f20c9 | 1883 | mlog(0, "Orphan scan completed\n"); |
83273932 SE |
1884 | return; |
1885 | } | |
1886 | ||
1887 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ | |
1888 | void ocfs2_orphan_scan_work(struct work_struct *work) | |
1889 | { | |
1890 | struct ocfs2_orphan_scan *os; | |
1891 | struct ocfs2_super *osb; | |
1892 | ||
1893 | os = container_of(work, struct ocfs2_orphan_scan, | |
1894 | os_orphan_scan_work.work); | |
1895 | osb = os->os_osb; | |
1896 | ||
1897 | mutex_lock(&os->os_lock); | |
1898 | ocfs2_queue_orphan_scan(osb); | |
692684e1 | 1899 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) |
40f165f4 | 1900 | queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work, |
692684e1 | 1901 | ocfs2_orphan_scan_timeout()); |
83273932 SE |
1902 | mutex_unlock(&os->os_lock); |
1903 | } | |
1904 | ||
1905 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) | |
1906 | { | |
1907 | struct ocfs2_orphan_scan *os; | |
1908 | ||
1909 | os = &osb->osb_orphan_scan; | |
df152c24 SM |
1910 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { |
1911 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1912 | mutex_lock(&os->os_lock); | |
1913 | cancel_delayed_work(&os->os_orphan_scan_work); | |
1914 | mutex_unlock(&os->os_lock); | |
1915 | } | |
83273932 SE |
1916 | } |
1917 | ||
df152c24 | 1918 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
83273932 SE |
1919 | { |
1920 | struct ocfs2_orphan_scan *os; | |
1921 | ||
1922 | os = &osb->osb_orphan_scan; | |
1923 | os->os_osb = osb; | |
15633a22 | 1924 | os->os_count = 0; |
3211949f | 1925 | os->os_seqno = 0; |
83273932 | 1926 | mutex_init(&os->os_lock); |
df152c24 | 1927 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
8b712cd5 | 1928 | } |
83273932 | 1929 | |
8b712cd5 JM |
1930 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
1931 | { | |
1932 | struct ocfs2_orphan_scan *os; | |
1933 | ||
1934 | os = &osb->osb_orphan_scan; | |
1935 | os->os_scantime = CURRENT_TIME; | |
df152c24 SM |
1936 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
1937 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1938 | else { | |
1939 | atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); | |
40f165f4 TM |
1940 | queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work, |
1941 | ocfs2_orphan_scan_timeout()); | |
df152c24 | 1942 | } |
83273932 SE |
1943 | } |
1944 | ||
5eae5b96 MF |
1945 | struct ocfs2_orphan_filldir_priv { |
1946 | struct inode *head; | |
1947 | struct ocfs2_super *osb; | |
1948 | }; | |
1949 | ||
1950 | static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len, | |
1951 | loff_t pos, u64 ino, unsigned type) | |
1952 | { | |
1953 | struct ocfs2_orphan_filldir_priv *p = priv; | |
1954 | struct inode *iter; | |
1955 | ||
1956 | if (name_len == 1 && !strncmp(".", name, 1)) | |
1957 | return 0; | |
1958 | if (name_len == 2 && !strncmp("..", name, 2)) | |
1959 | return 0; | |
1960 | ||
1961 | /* Skip bad inodes so that recovery can continue */ | |
1962 | iter = ocfs2_iget(p->osb, ino, | |
5fa0613e | 1963 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); |
5eae5b96 MF |
1964 | if (IS_ERR(iter)) |
1965 | return 0; | |
1966 | ||
1967 | mlog(0, "queue orphan %llu\n", | |
1968 | (unsigned long long)OCFS2_I(iter)->ip_blkno); | |
1969 | /* No locking is required for the next_orphan queue as there | |
1970 | * is only ever a single process doing orphan recovery. */ | |
1971 | OCFS2_I(iter)->ip_next_orphan = p->head; | |
1972 | p->head = iter; | |
1973 | ||
1974 | return 0; | |
1975 | } | |
1976 | ||
b4df6ed8 MF |
1977 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
1978 | int slot, | |
1979 | struct inode **head) | |
ccd979bd | 1980 | { |
b4df6ed8 | 1981 | int status; |
ccd979bd | 1982 | struct inode *orphan_dir_inode = NULL; |
5eae5b96 MF |
1983 | struct ocfs2_orphan_filldir_priv priv; |
1984 | loff_t pos = 0; | |
1985 | ||
1986 | priv.osb = osb; | |
1987 | priv.head = *head; | |
ccd979bd MF |
1988 | |
1989 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1990 | ORPHAN_DIR_SYSTEM_INODE, | |
1991 | slot); | |
1992 | if (!orphan_dir_inode) { | |
1993 | status = -ENOENT; | |
1994 | mlog_errno(status); | |
b4df6ed8 | 1995 | return status; |
2bd63216 | 1996 | } |
ccd979bd | 1997 | |
1b1dcc1b | 1998 | mutex_lock(&orphan_dir_inode->i_mutex); |
e63aecb6 | 1999 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
ccd979bd | 2000 | if (status < 0) { |
ccd979bd MF |
2001 | mlog_errno(status); |
2002 | goto out; | |
2003 | } | |
ccd979bd | 2004 | |
5eae5b96 MF |
2005 | status = ocfs2_dir_foreach(orphan_dir_inode, &pos, &priv, |
2006 | ocfs2_orphan_filldir); | |
2007 | if (status) { | |
2008 | mlog_errno(status); | |
a86370fb | 2009 | goto out_cluster; |
ccd979bd | 2010 | } |
ccd979bd | 2011 | |
5eae5b96 MF |
2012 | *head = priv.head; |
2013 | ||
a86370fb | 2014 | out_cluster: |
e63aecb6 | 2015 | ocfs2_inode_unlock(orphan_dir_inode, 0); |
b4df6ed8 MF |
2016 | out: |
2017 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 2018 | iput(orphan_dir_inode); |
b4df6ed8 MF |
2019 | return status; |
2020 | } | |
2021 | ||
2022 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
2023 | int slot) | |
2024 | { | |
2025 | int ret; | |
2026 | ||
2027 | spin_lock(&osb->osb_lock); | |
2028 | ret = !osb->osb_orphan_wipes[slot]; | |
2029 | spin_unlock(&osb->osb_lock); | |
2030 | return ret; | |
2031 | } | |
2032 | ||
2033 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
2034 | int slot) | |
2035 | { | |
2036 | spin_lock(&osb->osb_lock); | |
2037 | /* Mark ourselves such that new processes in delete_inode() | |
2038 | * know to quit early. */ | |
2039 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2040 | while (osb->osb_orphan_wipes[slot]) { | |
2041 | /* If any processes are already in the middle of an | |
2042 | * orphan wipe on this dir, then we need to wait for | |
2043 | * them. */ | |
2044 | spin_unlock(&osb->osb_lock); | |
2045 | wait_event_interruptible(osb->osb_wipe_event, | |
2046 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
2047 | spin_lock(&osb->osb_lock); | |
2048 | } | |
2049 | spin_unlock(&osb->osb_lock); | |
2050 | } | |
2051 | ||
2052 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
2053 | int slot) | |
2054 | { | |
2055 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2056 | } | |
2057 | ||
2058 | /* | |
2059 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
2060 | * must run during recovery. Our strategy here is to build a list of | |
2061 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
2062 | * (most) of the rest of the work. | |
2063 | * | |
2064 | * Orphan recovery can happen at any time, not just mount so we have a | |
2065 | * couple of extra considerations. | |
2066 | * | |
2067 | * - We grab as many inodes as we can under the orphan dir lock - | |
2068 | * doing iget() outside the orphan dir risks getting a reference on | |
2069 | * an invalid inode. | |
2070 | * - We must be sure not to deadlock with other processes on the | |
2071 | * system wanting to run delete_inode(). This can happen when they go | |
2072 | * to lock the orphan dir and the orphan recovery process attempts to | |
2073 | * iget() inside the orphan dir lock. This can be avoided by | |
2074 | * advertising our state to ocfs2_delete_inode(). | |
2075 | */ | |
2076 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
2077 | int slot) | |
2078 | { | |
2079 | int ret = 0; | |
2080 | struct inode *inode = NULL; | |
2081 | struct inode *iter; | |
2082 | struct ocfs2_inode_info *oi; | |
2083 | ||
2084 | mlog(0, "Recover inodes from orphan dir in slot %d\n", slot); | |
2085 | ||
2086 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
2087 | ret = ocfs2_queue_orphans(osb, slot, &inode); | |
2088 | ocfs2_clear_recovering_orphan_dir(osb, slot); | |
2089 | ||
2090 | /* Error here should be noted, but we want to continue with as | |
2091 | * many queued inodes as we've got. */ | |
2092 | if (ret) | |
2093 | mlog_errno(ret); | |
ccd979bd MF |
2094 | |
2095 | while (inode) { | |
2096 | oi = OCFS2_I(inode); | |
b0697053 | 2097 | mlog(0, "iput orphan %llu\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
2098 | |
2099 | iter = oi->ip_next_orphan; | |
2100 | ||
2101 | spin_lock(&oi->ip_lock); | |
34d024f8 MF |
2102 | /* The remote delete code may have set these on the |
2103 | * assumption that the other node would wipe them | |
2104 | * successfully. If they are still in the node's | |
2105 | * orphan dir, we need to reset that state. */ | |
ccd979bd MF |
2106 | oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); |
2107 | ||
2108 | /* Set the proper information to get us going into | |
2109 | * ocfs2_delete_inode. */ | |
2110 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
2111 | spin_unlock(&oi->ip_lock); |
2112 | ||
2113 | iput(inode); | |
2114 | ||
2115 | inode = iter; | |
2116 | } | |
2117 | ||
b4df6ed8 | 2118 | return ret; |
ccd979bd MF |
2119 | } |
2120 | ||
19ece546 | 2121 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
ccd979bd MF |
2122 | { |
2123 | /* This check is good because ocfs2 will wait on our recovery | |
2124 | * thread before changing it to something other than MOUNTED | |
2125 | * or DISABLED. */ | |
2126 | wait_event(osb->osb_mount_event, | |
19ece546 JK |
2127 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2128 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || | |
ccd979bd MF |
2129 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2130 | ||
2131 | /* If there's an error on mount, then we may never get to the | |
2132 | * MOUNTED flag, but this is set right before | |
2133 | * dismount_volume() so we can trust it. */ | |
2134 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
2135 | mlog(0, "mount error, exiting!\n"); | |
2136 | return -EBUSY; | |
2137 | } | |
2138 | ||
2139 | return 0; | |
2140 | } | |
2141 | ||
2142 | static int ocfs2_commit_thread(void *arg) | |
2143 | { | |
2144 | int status; | |
2145 | struct ocfs2_super *osb = arg; | |
2146 | struct ocfs2_journal *journal = osb->journal; | |
2147 | ||
2148 | /* we can trust j_num_trans here because _should_stop() is only set in | |
2149 | * shutdown and nobody other than ourselves should be able to start | |
2150 | * transactions. committing on shutdown might take a few iterations | |
2151 | * as final transactions put deleted inodes on the list */ | |
2152 | while (!(kthread_should_stop() && | |
2153 | atomic_read(&journal->j_num_trans) == 0)) { | |
2154 | ||
745ae8ba MF |
2155 | wait_event_interruptible(osb->checkpoint_event, |
2156 | atomic_read(&journal->j_num_trans) | |
2157 | || kthread_should_stop()); | |
ccd979bd MF |
2158 | |
2159 | status = ocfs2_commit_cache(osb); | |
2160 | if (status < 0) | |
2161 | mlog_errno(status); | |
2162 | ||
2163 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
2164 | mlog(ML_KTHREAD, | |
2165 | "commit_thread: %u transactions pending on " | |
2166 | "shutdown\n", | |
2167 | atomic_read(&journal->j_num_trans)); | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | return 0; | |
2172 | } | |
2173 | ||
539d8264 SM |
2174 | /* Reads all the journal inodes without taking any cluster locks. Used |
2175 | * for hard readonly access to determine whether any journal requires | |
2176 | * recovery. Also used to refresh the recovery generation numbers after | |
2177 | * a journal has been recovered by another node. | |
2178 | */ | |
ccd979bd MF |
2179 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2180 | { | |
2181 | int ret = 0; | |
2182 | unsigned int slot; | |
539d8264 | 2183 | struct buffer_head *di_bh = NULL; |
ccd979bd | 2184 | struct ocfs2_dinode *di; |
539d8264 | 2185 | int journal_dirty = 0; |
ccd979bd MF |
2186 | |
2187 | for(slot = 0; slot < osb->max_slots; slot++) { | |
539d8264 SM |
2188 | ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); |
2189 | if (ret) { | |
ccd979bd MF |
2190 | mlog_errno(ret); |
2191 | goto out; | |
2192 | } | |
2193 | ||
2194 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2195 | ||
539d8264 SM |
2196 | osb->slot_recovery_generations[slot] = |
2197 | ocfs2_get_recovery_generation(di); | |
2198 | ||
ccd979bd MF |
2199 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2200 | OCFS2_JOURNAL_DIRTY_FL) | |
539d8264 | 2201 | journal_dirty = 1; |
ccd979bd MF |
2202 | |
2203 | brelse(di_bh); | |
539d8264 | 2204 | di_bh = NULL; |
ccd979bd MF |
2205 | } |
2206 | ||
2207 | out: | |
539d8264 SM |
2208 | if (journal_dirty) |
2209 | ret = -EROFS; | |
ccd979bd MF |
2210 | return ret; |
2211 | } |