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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; | |
304 | unsigned long old_id; | |
305 | struct ocfs2_journal *journal = NULL; | |
306 | ||
307 | mlog_entry_void(); | |
308 | ||
309 | journal = osb->journal; | |
310 | ||
311 | /* Flush all pending commits and checkpoint the journal. */ | |
312 | down_write(&journal->j_trans_barrier); | |
313 | ||
314 | if (atomic_read(&journal->j_num_trans) == 0) { | |
315 | up_write(&journal->j_trans_barrier); | |
316 | mlog(0, "No transactions for me to flush!\n"); | |
317 | goto finally; | |
318 | } | |
319 | ||
2b4e30fb JB |
320 | jbd2_journal_lock_updates(journal->j_journal); |
321 | status = jbd2_journal_flush(journal->j_journal); | |
322 | jbd2_journal_unlock_updates(journal->j_journal); | |
ccd979bd MF |
323 | if (status < 0) { |
324 | up_write(&journal->j_trans_barrier); | |
325 | mlog_errno(status); | |
326 | goto finally; | |
327 | } | |
328 | ||
329 | old_id = ocfs2_inc_trans_id(journal); | |
330 | ||
331 | flushed = atomic_read(&journal->j_num_trans); | |
332 | atomic_set(&journal->j_num_trans, 0); | |
333 | up_write(&journal->j_trans_barrier); | |
334 | ||
335 | mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n", | |
336 | journal->j_trans_id, flushed); | |
337 | ||
34d024f8 | 338 | ocfs2_wake_downconvert_thread(osb); |
ccd979bd MF |
339 | wake_up(&journal->j_checkpointed); |
340 | finally: | |
341 | mlog_exit(status); | |
342 | return status; | |
343 | } | |
344 | ||
ccd979bd MF |
345 | /* pass it NULL and it will allocate a new handle object for you. If |
346 | * you pass it a handle however, it may still return error, in which | |
347 | * case it has free'd the passed handle for you. */ | |
1fabe148 | 348 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
ccd979bd | 349 | { |
ccd979bd | 350 | journal_t *journal = osb->journal->j_journal; |
1fabe148 | 351 | handle_t *handle; |
ccd979bd | 352 | |
ebdec83b | 353 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd | 354 | |
65eff9cc MF |
355 | if (ocfs2_is_hard_readonly(osb)) |
356 | return ERR_PTR(-EROFS); | |
ccd979bd MF |
357 | |
358 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
359 | BUG_ON(max_buffs <= 0); | |
360 | ||
90e86a63 JK |
361 | /* Nested transaction? Just return the handle... */ |
362 | if (journal_current_handle()) | |
363 | return jbd2_journal_start(journal, max_buffs); | |
ccd979bd | 364 | |
ccd979bd MF |
365 | down_read(&osb->journal->j_trans_barrier); |
366 | ||
2b4e30fb | 367 | handle = jbd2_journal_start(journal, max_buffs); |
1fabe148 | 368 | if (IS_ERR(handle)) { |
ccd979bd MF |
369 | up_read(&osb->journal->j_trans_barrier); |
370 | ||
1fabe148 | 371 | mlog_errno(PTR_ERR(handle)); |
ccd979bd MF |
372 | |
373 | if (is_journal_aborted(journal)) { | |
374 | ocfs2_abort(osb->sb, "Detected aborted journal"); | |
1fabe148 | 375 | handle = ERR_PTR(-EROFS); |
ccd979bd | 376 | } |
c271c5c2 SM |
377 | } else { |
378 | if (!ocfs2_mount_local(osb)) | |
379 | atomic_inc(&(osb->journal->j_num_trans)); | |
380 | } | |
ccd979bd | 381 | |
ccd979bd | 382 | return handle; |
ccd979bd MF |
383 | } |
384 | ||
1fabe148 MF |
385 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
386 | handle_t *handle) | |
ccd979bd | 387 | { |
90e86a63 | 388 | int ret, nested; |
02dc1af4 | 389 | struct ocfs2_journal *journal = osb->journal; |
ccd979bd MF |
390 | |
391 | BUG_ON(!handle); | |
392 | ||
90e86a63 | 393 | nested = handle->h_ref > 1; |
2b4e30fb | 394 | ret = jbd2_journal_stop(handle); |
1fabe148 MF |
395 | if (ret < 0) |
396 | mlog_errno(ret); | |
ccd979bd | 397 | |
90e86a63 JK |
398 | if (!nested) |
399 | up_read(&journal->j_trans_barrier); | |
ccd979bd | 400 | |
1fabe148 | 401 | return ret; |
ccd979bd MF |
402 | } |
403 | ||
404 | /* | |
405 | * 'nblocks' is what you want to add to the current | |
406 | * transaction. extend_trans will either extend the current handle by | |
407 | * nblocks, or commit it and start a new one with nblocks credits. | |
408 | * | |
2b4e30fb | 409 | * This might call jbd2_journal_restart() which will commit dirty buffers |
e8aed345 MF |
410 | * and then restart the transaction. Before calling |
411 | * ocfs2_extend_trans(), any changed blocks should have been | |
412 | * dirtied. After calling it, all blocks which need to be changed must | |
413 | * go through another set of journal_access/journal_dirty calls. | |
414 | * | |
ccd979bd MF |
415 | * WARNING: This will not release any semaphores or disk locks taken |
416 | * during the transaction, so make sure they were taken *before* | |
417 | * start_trans or we'll have ordering deadlocks. | |
418 | * | |
419 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
420 | * good because transaction ids haven't yet been recorded on the | |
421 | * cluster locks associated with this handle. | |
422 | */ | |
1fc58146 | 423 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
ccd979bd MF |
424 | { |
425 | int status; | |
426 | ||
427 | BUG_ON(!handle); | |
ccd979bd MF |
428 | BUG_ON(!nblocks); |
429 | ||
430 | mlog_entry_void(); | |
431 | ||
432 | mlog(0, "Trying to extend transaction by %d blocks\n", nblocks); | |
433 | ||
e407e397 | 434 | #ifdef CONFIG_OCFS2_DEBUG_FS |
0879c584 MF |
435 | status = 1; |
436 | #else | |
2b4e30fb | 437 | status = jbd2_journal_extend(handle, nblocks); |
ccd979bd MF |
438 | if (status < 0) { |
439 | mlog_errno(status); | |
440 | goto bail; | |
441 | } | |
0879c584 | 442 | #endif |
ccd979bd MF |
443 | |
444 | if (status > 0) { | |
2b4e30fb JB |
445 | mlog(0, |
446 | "jbd2_journal_extend failed, trying " | |
447 | "jbd2_journal_restart\n"); | |
448 | status = jbd2_journal_restart(handle, nblocks); | |
ccd979bd | 449 | if (status < 0) { |
ccd979bd MF |
450 | mlog_errno(status); |
451 | goto bail; | |
452 | } | |
01ddf1e1 | 453 | } |
ccd979bd MF |
454 | |
455 | status = 0; | |
456 | bail: | |
457 | ||
458 | mlog_exit(status); | |
459 | return status; | |
460 | } | |
461 | ||
50655ae9 JB |
462 | struct ocfs2_triggers { |
463 | struct jbd2_buffer_trigger_type ot_triggers; | |
464 | int ot_offset; | |
465 | }; | |
466 | ||
467 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) | |
468 | { | |
469 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); | |
470 | } | |
471 | ||
472 | static void ocfs2_commit_trigger(struct jbd2_buffer_trigger_type *triggers, | |
473 | struct buffer_head *bh, | |
474 | void *data, size_t size) | |
475 | { | |
476 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); | |
477 | ||
478 | /* | |
479 | * We aren't guaranteed to have the superblock here, so we | |
480 | * must unconditionally compute the ecc data. | |
481 | * __ocfs2_journal_access() will only set the triggers if | |
482 | * metaecc is enabled. | |
483 | */ | |
484 | ocfs2_block_check_compute(data, size, data + ot->ot_offset); | |
485 | } | |
486 | ||
487 | /* | |
488 | * Quota blocks have their own trigger because the struct ocfs2_block_check | |
489 | * offset depends on the blocksize. | |
490 | */ | |
491 | static void ocfs2_dq_commit_trigger(struct jbd2_buffer_trigger_type *triggers, | |
492 | struct buffer_head *bh, | |
493 | void *data, size_t size) | |
494 | { | |
495 | struct ocfs2_disk_dqtrailer *dqt = | |
496 | ocfs2_block_dqtrailer(size, data); | |
497 | ||
498 | /* | |
499 | * We aren't guaranteed to have the superblock here, so we | |
500 | * must unconditionally compute the ecc data. | |
501 | * __ocfs2_journal_access() will only set the triggers if | |
502 | * metaecc is enabled. | |
503 | */ | |
504 | ocfs2_block_check_compute(data, size, &dqt->dq_check); | |
505 | } | |
506 | ||
c175a518 JB |
507 | /* |
508 | * Directory blocks also have their own trigger because the | |
509 | * struct ocfs2_block_check offset depends on the blocksize. | |
510 | */ | |
511 | static void ocfs2_db_commit_trigger(struct jbd2_buffer_trigger_type *triggers, | |
512 | struct buffer_head *bh, | |
513 | void *data, size_t size) | |
514 | { | |
515 | struct ocfs2_dir_block_trailer *trailer = | |
516 | ocfs2_dir_trailer_from_size(size, data); | |
517 | ||
518 | /* | |
519 | * We aren't guaranteed to have the superblock here, so we | |
520 | * must unconditionally compute the ecc data. | |
521 | * __ocfs2_journal_access() will only set the triggers if | |
522 | * metaecc is enabled. | |
523 | */ | |
524 | ocfs2_block_check_compute(data, size, &trailer->db_check); | |
525 | } | |
526 | ||
50655ae9 JB |
527 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
528 | struct buffer_head *bh) | |
529 | { | |
530 | mlog(ML_ERROR, | |
531 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " | |
532 | "bh->b_blocknr = %llu\n", | |
533 | (unsigned long)bh, | |
534 | (unsigned long long)bh->b_blocknr); | |
535 | ||
536 | /* We aren't guaranteed to have the superblock here - but if we | |
537 | * don't, it'll just crash. */ | |
538 | ocfs2_error(bh->b_assoc_map->host->i_sb, | |
539 | "JBD2 has aborted our journal, ocfs2 cannot continue\n"); | |
540 | } | |
541 | ||
542 | static struct ocfs2_triggers di_triggers = { | |
543 | .ot_triggers = { | |
544 | .t_commit = ocfs2_commit_trigger, | |
545 | .t_abort = ocfs2_abort_trigger, | |
546 | }, | |
547 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), | |
548 | }; | |
549 | ||
550 | static struct ocfs2_triggers eb_triggers = { | |
551 | .ot_triggers = { | |
552 | .t_commit = ocfs2_commit_trigger, | |
553 | .t_abort = ocfs2_abort_trigger, | |
554 | }, | |
555 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), | |
556 | }; | |
557 | ||
93c97087 TM |
558 | static struct ocfs2_triggers rb_triggers = { |
559 | .ot_triggers = { | |
560 | .t_commit = ocfs2_commit_trigger, | |
561 | .t_abort = ocfs2_abort_trigger, | |
562 | }, | |
563 | .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), | |
564 | }; | |
565 | ||
50655ae9 JB |
566 | static struct ocfs2_triggers gd_triggers = { |
567 | .ot_triggers = { | |
568 | .t_commit = ocfs2_commit_trigger, | |
569 | .t_abort = ocfs2_abort_trigger, | |
570 | }, | |
571 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), | |
572 | }; | |
573 | ||
c175a518 JB |
574 | static struct ocfs2_triggers db_triggers = { |
575 | .ot_triggers = { | |
576 | .t_commit = ocfs2_db_commit_trigger, | |
577 | .t_abort = ocfs2_abort_trigger, | |
578 | }, | |
579 | }; | |
580 | ||
50655ae9 JB |
581 | static struct ocfs2_triggers xb_triggers = { |
582 | .ot_triggers = { | |
583 | .t_commit = ocfs2_commit_trigger, | |
584 | .t_abort = ocfs2_abort_trigger, | |
585 | }, | |
586 | .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), | |
587 | }; | |
588 | ||
589 | static struct ocfs2_triggers dq_triggers = { | |
590 | .ot_triggers = { | |
591 | .t_commit = ocfs2_dq_commit_trigger, | |
592 | .t_abort = ocfs2_abort_trigger, | |
593 | }, | |
594 | }; | |
595 | ||
9b7895ef MF |
596 | static struct ocfs2_triggers dr_triggers = { |
597 | .ot_triggers = { | |
598 | .t_commit = ocfs2_commit_trigger, | |
599 | .t_abort = ocfs2_abort_trigger, | |
600 | }, | |
601 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), | |
602 | }; | |
603 | ||
604 | static struct ocfs2_triggers dl_triggers = { | |
605 | .ot_triggers = { | |
606 | .t_commit = ocfs2_commit_trigger, | |
607 | .t_abort = ocfs2_abort_trigger, | |
608 | }, | |
609 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), | |
610 | }; | |
611 | ||
50655ae9 | 612 | static int __ocfs2_journal_access(handle_t *handle, |
0cf2f763 | 613 | struct ocfs2_caching_info *ci, |
50655ae9 JB |
614 | struct buffer_head *bh, |
615 | struct ocfs2_triggers *triggers, | |
616 | int type) | |
ccd979bd MF |
617 | { |
618 | int status; | |
0cf2f763 JB |
619 | struct ocfs2_super *osb = |
620 | OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); | |
ccd979bd | 621 | |
0cf2f763 | 622 | BUG_ON(!ci || !ci->ci_ops); |
ccd979bd MF |
623 | BUG_ON(!handle); |
624 | BUG_ON(!bh); | |
ccd979bd | 625 | |
205f87f6 | 626 | mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n", |
ccd979bd MF |
627 | (unsigned long long)bh->b_blocknr, type, |
628 | (type == OCFS2_JOURNAL_ACCESS_CREATE) ? | |
629 | "OCFS2_JOURNAL_ACCESS_CREATE" : | |
630 | "OCFS2_JOURNAL_ACCESS_WRITE", | |
631 | bh->b_size); | |
632 | ||
633 | /* we can safely remove this assertion after testing. */ | |
634 | if (!buffer_uptodate(bh)) { | |
635 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
636 | mlog(ML_ERROR, "b_blocknr=%llu\n", | |
637 | (unsigned long long)bh->b_blocknr); | |
638 | BUG(); | |
639 | } | |
640 | ||
0cf2f763 | 641 | /* Set the current transaction information on the ci so |
ccd979bd | 642 | * that the locking code knows whether it can drop it's locks |
0cf2f763 | 643 | * on this ci or not. We're protected from the commit |
ccd979bd MF |
644 | * thread updating the current transaction id until |
645 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
646 | * j_trans_barrier for us. */ | |
0cf2f763 | 647 | ocfs2_set_ci_lock_trans(osb->journal, ci); |
ccd979bd | 648 | |
0cf2f763 | 649 | ocfs2_metadata_cache_io_lock(ci); |
ccd979bd MF |
650 | switch (type) { |
651 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
652 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
2b4e30fb | 653 | status = jbd2_journal_get_write_access(handle, bh); |
ccd979bd MF |
654 | break; |
655 | ||
656 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
2b4e30fb | 657 | status = jbd2_journal_get_undo_access(handle, bh); |
ccd979bd MF |
658 | break; |
659 | ||
660 | default: | |
661 | status = -EINVAL; | |
af901ca1 | 662 | mlog(ML_ERROR, "Unknown access type!\n"); |
ccd979bd | 663 | } |
0cf2f763 | 664 | if (!status && ocfs2_meta_ecc(osb) && triggers) |
50655ae9 | 665 | jbd2_journal_set_triggers(bh, &triggers->ot_triggers); |
0cf2f763 | 666 | ocfs2_metadata_cache_io_unlock(ci); |
ccd979bd MF |
667 | |
668 | if (status < 0) | |
669 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
670 | status, type); | |
671 | ||
672 | mlog_exit(status); | |
673 | return status; | |
674 | } | |
675 | ||
0cf2f763 JB |
676 | int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, |
677 | struct buffer_head *bh, int type) | |
50655ae9 | 678 | { |
0cf2f763 | 679 | return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type); |
50655ae9 JB |
680 | } |
681 | ||
0cf2f763 | 682 | int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
683 | struct buffer_head *bh, int type) |
684 | { | |
0cf2f763 | 685 | return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type); |
50655ae9 JB |
686 | } |
687 | ||
93c97087 TM |
688 | int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, |
689 | struct buffer_head *bh, int type) | |
690 | { | |
691 | return __ocfs2_journal_access(handle, ci, bh, &rb_triggers, | |
692 | type); | |
693 | } | |
694 | ||
0cf2f763 | 695 | int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
696 | struct buffer_head *bh, int type) |
697 | { | |
0cf2f763 | 698 | return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type); |
50655ae9 JB |
699 | } |
700 | ||
0cf2f763 | 701 | int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
702 | struct buffer_head *bh, int type) |
703 | { | |
0cf2f763 | 704 | return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type); |
50655ae9 JB |
705 | } |
706 | ||
0cf2f763 | 707 | int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
708 | struct buffer_head *bh, int type) |
709 | { | |
0cf2f763 | 710 | return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type); |
50655ae9 JB |
711 | } |
712 | ||
0cf2f763 | 713 | int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
714 | struct buffer_head *bh, int type) |
715 | { | |
0cf2f763 | 716 | return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type); |
50655ae9 JB |
717 | } |
718 | ||
0cf2f763 | 719 | int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
720 | struct buffer_head *bh, int type) |
721 | { | |
0cf2f763 | 722 | return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type); |
9b7895ef MF |
723 | } |
724 | ||
0cf2f763 | 725 | int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
726 | struct buffer_head *bh, int type) |
727 | { | |
0cf2f763 | 728 | return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type); |
9b7895ef MF |
729 | } |
730 | ||
0cf2f763 | 731 | int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
732 | struct buffer_head *bh, int type) |
733 | { | |
0cf2f763 | 734 | return __ocfs2_journal_access(handle, ci, bh, NULL, type); |
50655ae9 JB |
735 | } |
736 | ||
ec20cec7 | 737 | void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) |
ccd979bd MF |
738 | { |
739 | int status; | |
740 | ||
ccd979bd MF |
741 | mlog_entry("(bh->b_blocknr=%llu)\n", |
742 | (unsigned long long)bh->b_blocknr); | |
743 | ||
2b4e30fb | 744 | status = jbd2_journal_dirty_metadata(handle, bh); |
ec20cec7 | 745 | BUG_ON(status); |
ccd979bd | 746 | |
ec20cec7 | 747 | mlog_exit_void(); |
ccd979bd MF |
748 | } |
749 | ||
2b4e30fb | 750 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
ccd979bd MF |
751 | |
752 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
753 | { | |
754 | journal_t *journal = osb->journal->j_journal; | |
d147b3d6 MF |
755 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
756 | ||
757 | if (osb->osb_commit_interval) | |
758 | commit_interval = osb->osb_commit_interval; | |
ccd979bd MF |
759 | |
760 | spin_lock(&journal->j_state_lock); | |
d147b3d6 | 761 | journal->j_commit_interval = commit_interval; |
ccd979bd | 762 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
2b4e30fb | 763 | journal->j_flags |= JBD2_BARRIER; |
ccd979bd | 764 | else |
2b4e30fb | 765 | journal->j_flags &= ~JBD2_BARRIER; |
ccd979bd MF |
766 | spin_unlock(&journal->j_state_lock); |
767 | } | |
768 | ||
769 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
770 | { | |
771 | int status = -1; | |
772 | struct inode *inode = NULL; /* the journal inode */ | |
773 | journal_t *j_journal = NULL; | |
774 | struct ocfs2_dinode *di = NULL; | |
775 | struct buffer_head *bh = NULL; | |
776 | struct ocfs2_super *osb; | |
e63aecb6 | 777 | int inode_lock = 0; |
ccd979bd MF |
778 | |
779 | mlog_entry_void(); | |
780 | ||
781 | BUG_ON(!journal); | |
782 | ||
783 | osb = journal->j_osb; | |
784 | ||
785 | /* already have the inode for our journal */ | |
786 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
787 | osb->slot_num); | |
788 | if (inode == NULL) { | |
789 | status = -EACCES; | |
790 | mlog_errno(status); | |
791 | goto done; | |
792 | } | |
793 | if (is_bad_inode(inode)) { | |
794 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
795 | iput(inode); | |
796 | inode = NULL; | |
797 | status = -EACCES; | |
798 | goto done; | |
799 | } | |
800 | ||
801 | SET_INODE_JOURNAL(inode); | |
802 | OCFS2_I(inode)->ip_open_count++; | |
803 | ||
6eff5790 MF |
804 | /* Skip recovery waits here - journal inode metadata never |
805 | * changes in a live cluster so it can be considered an | |
806 | * exception to the rule. */ | |
e63aecb6 | 807 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd MF |
808 | if (status < 0) { |
809 | if (status != -ERESTARTSYS) | |
810 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
811 | goto done; | |
812 | } | |
813 | ||
e63aecb6 | 814 | inode_lock = 1; |
ccd979bd MF |
815 | di = (struct ocfs2_dinode *)bh->b_data; |
816 | ||
817 | if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) { | |
818 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", | |
819 | inode->i_size); | |
820 | status = -EINVAL; | |
821 | goto done; | |
822 | } | |
823 | ||
824 | mlog(0, "inode->i_size = %lld\n", inode->i_size); | |
5515eff8 AM |
825 | mlog(0, "inode->i_blocks = %llu\n", |
826 | (unsigned long long)inode->i_blocks); | |
ccd979bd MF |
827 | mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters); |
828 | ||
829 | /* call the kernels journal init function now */ | |
2b4e30fb | 830 | j_journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
831 | if (j_journal == NULL) { |
832 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
833 | status = -EINVAL; | |
834 | goto done; | |
835 | } | |
836 | ||
2b4e30fb | 837 | mlog(0, "Returned from jbd2_journal_init_inode\n"); |
ccd979bd MF |
838 | mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen); |
839 | ||
840 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
841 | OCFS2_JOURNAL_DIRTY_FL); | |
842 | ||
843 | journal->j_journal = j_journal; | |
844 | journal->j_inode = inode; | |
845 | journal->j_bh = bh; | |
846 | ||
847 | ocfs2_set_journal_params(osb); | |
848 | ||
849 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
850 | ||
851 | status = 0; | |
852 | done: | |
853 | if (status < 0) { | |
e63aecb6 MF |
854 | if (inode_lock) |
855 | ocfs2_inode_unlock(inode, 1); | |
a81cb88b | 856 | brelse(bh); |
ccd979bd MF |
857 | if (inode) { |
858 | OCFS2_I(inode)->ip_open_count--; | |
859 | iput(inode); | |
860 | } | |
861 | } | |
862 | ||
863 | mlog_exit(status); | |
864 | return status; | |
865 | } | |
866 | ||
539d8264 SM |
867 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
868 | { | |
869 | le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); | |
870 | } | |
871 | ||
872 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) | |
873 | { | |
874 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); | |
875 | } | |
876 | ||
ccd979bd | 877 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 878 | int dirty, int replayed) |
ccd979bd MF |
879 | { |
880 | int status; | |
881 | unsigned int flags; | |
882 | struct ocfs2_journal *journal = osb->journal; | |
883 | struct buffer_head *bh = journal->j_bh; | |
884 | struct ocfs2_dinode *fe; | |
885 | ||
886 | mlog_entry_void(); | |
887 | ||
888 | fe = (struct ocfs2_dinode *)bh->b_data; | |
10995aa2 JB |
889 | |
890 | /* The journal bh on the osb always comes from ocfs2_journal_init() | |
891 | * and was validated there inside ocfs2_inode_lock_full(). It's a | |
892 | * code bug if we mess it up. */ | |
893 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
ccd979bd MF |
894 | |
895 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
896 | if (dirty) | |
897 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
898 | else | |
899 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
900 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
901 | ||
539d8264 SM |
902 | if (replayed) |
903 | ocfs2_bump_recovery_generation(fe); | |
904 | ||
13723d00 | 905 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 906 | status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); |
ccd979bd MF |
907 | if (status < 0) |
908 | mlog_errno(status); | |
909 | ||
ccd979bd MF |
910 | mlog_exit(status); |
911 | return status; | |
912 | } | |
913 | ||
914 | /* | |
915 | * If the journal has been kmalloc'd it needs to be freed after this | |
916 | * call. | |
917 | */ | |
918 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
919 | { | |
920 | struct ocfs2_journal *journal = NULL; | |
921 | int status = 0; | |
922 | struct inode *inode = NULL; | |
923 | int num_running_trans = 0; | |
924 | ||
925 | mlog_entry_void(); | |
926 | ||
ebdec83b | 927 | BUG_ON(!osb); |
ccd979bd MF |
928 | |
929 | journal = osb->journal; | |
930 | if (!journal) | |
931 | goto done; | |
932 | ||
933 | inode = journal->j_inode; | |
934 | ||
935 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
936 | goto done; | |
937 | ||
2b4e30fb | 938 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
ccd979bd MF |
939 | if (!igrab(inode)) |
940 | BUG(); | |
941 | ||
942 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
943 | if (num_running_trans > 0) | |
944 | mlog(0, "Shutting down journal: must wait on %d " | |
945 | "running transactions!\n", | |
946 | num_running_trans); | |
947 | ||
948 | /* Do a commit_cache here. It will flush our journal, *and* | |
949 | * release any locks that are still held. | |
950 | * set the SHUTDOWN flag and release the trans lock. | |
951 | * the commit thread will take the trans lock for us below. */ | |
952 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
953 | ||
954 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
955 | * drop the trans_lock (which we want to hold until we | |
956 | * completely destroy the journal. */ | |
957 | if (osb->commit_task) { | |
958 | /* Wait for the commit thread */ | |
959 | mlog(0, "Waiting for ocfs2commit to exit....\n"); | |
960 | kthread_stop(osb->commit_task); | |
961 | osb->commit_task = NULL; | |
962 | } | |
963 | ||
964 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
965 | ||
c271c5c2 | 966 | if (ocfs2_mount_local(osb)) { |
2b4e30fb JB |
967 | jbd2_journal_lock_updates(journal->j_journal); |
968 | status = jbd2_journal_flush(journal->j_journal); | |
969 | jbd2_journal_unlock_updates(journal->j_journal); | |
c271c5c2 SM |
970 | if (status < 0) |
971 | mlog_errno(status); | |
972 | } | |
973 | ||
974 | if (status == 0) { | |
975 | /* | |
976 | * Do not toggle if flush was unsuccessful otherwise | |
977 | * will leave dirty metadata in a "clean" journal | |
978 | */ | |
539d8264 | 979 | status = ocfs2_journal_toggle_dirty(osb, 0, 0); |
c271c5c2 SM |
980 | if (status < 0) |
981 | mlog_errno(status); | |
982 | } | |
ccd979bd MF |
983 | |
984 | /* Shutdown the kernel journal system */ | |
2b4e30fb | 985 | jbd2_journal_destroy(journal->j_journal); |
ae0dff68 | 986 | journal->j_journal = NULL; |
ccd979bd MF |
987 | |
988 | OCFS2_I(inode)->ip_open_count--; | |
989 | ||
990 | /* unlock our journal */ | |
e63aecb6 | 991 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
992 | |
993 | brelse(journal->j_bh); | |
994 | journal->j_bh = NULL; | |
995 | ||
996 | journal->j_state = OCFS2_JOURNAL_FREE; | |
997 | ||
998 | // up_write(&journal->j_trans_barrier); | |
999 | done: | |
1000 | if (inode) | |
1001 | iput(inode); | |
1002 | mlog_exit_void(); | |
1003 | } | |
1004 | ||
1005 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
1006 | journal_t *journal, | |
1007 | int slot) | |
1008 | { | |
1009 | int olderr; | |
1010 | ||
2b4e30fb | 1011 | olderr = jbd2_journal_errno(journal); |
ccd979bd MF |
1012 | if (olderr) { |
1013 | mlog(ML_ERROR, "File system error %d recorded in " | |
1014 | "journal %u.\n", olderr, slot); | |
1015 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
1016 | sb->s_id); | |
1017 | ||
2b4e30fb JB |
1018 | jbd2_journal_ack_err(journal); |
1019 | jbd2_journal_clear_err(journal); | |
ccd979bd MF |
1020 | } |
1021 | } | |
1022 | ||
539d8264 | 1023 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
ccd979bd MF |
1024 | { |
1025 | int status = 0; | |
1026 | struct ocfs2_super *osb; | |
1027 | ||
1028 | mlog_entry_void(); | |
1029 | ||
b1f3550f | 1030 | BUG_ON(!journal); |
ccd979bd MF |
1031 | |
1032 | osb = journal->j_osb; | |
1033 | ||
2b4e30fb | 1034 | status = jbd2_journal_load(journal->j_journal); |
ccd979bd MF |
1035 | if (status < 0) { |
1036 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
1037 | goto done; | |
1038 | } | |
1039 | ||
1040 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
1041 | ||
539d8264 | 1042 | status = ocfs2_journal_toggle_dirty(osb, 1, replayed); |
ccd979bd MF |
1043 | if (status < 0) { |
1044 | mlog_errno(status); | |
1045 | goto done; | |
1046 | } | |
1047 | ||
1048 | /* Launch the commit thread */ | |
c271c5c2 SM |
1049 | if (!local) { |
1050 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, | |
1051 | "ocfs2cmt"); | |
1052 | if (IS_ERR(osb->commit_task)) { | |
1053 | status = PTR_ERR(osb->commit_task); | |
1054 | osb->commit_task = NULL; | |
1055 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " | |
1056 | "error=%d", status); | |
1057 | goto done; | |
1058 | } | |
1059 | } else | |
ccd979bd | 1060 | osb->commit_task = NULL; |
ccd979bd MF |
1061 | |
1062 | done: | |
1063 | mlog_exit(status); | |
1064 | return status; | |
1065 | } | |
1066 | ||
1067 | ||
1068 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
1069 | * mark the journal clean */ | |
1070 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
1071 | { | |
1072 | int status; | |
1073 | ||
1074 | mlog_entry_void(); | |
1075 | ||
ebdec83b | 1076 | BUG_ON(!journal); |
ccd979bd | 1077 | |
2b4e30fb | 1078 | status = jbd2_journal_wipe(journal->j_journal, full); |
ccd979bd MF |
1079 | if (status < 0) { |
1080 | mlog_errno(status); | |
1081 | goto bail; | |
1082 | } | |
1083 | ||
539d8264 | 1084 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); |
ccd979bd MF |
1085 | if (status < 0) |
1086 | mlog_errno(status); | |
1087 | ||
1088 | bail: | |
1089 | mlog_exit(status); | |
1090 | return status; | |
1091 | } | |
1092 | ||
553abd04 JB |
1093 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1094 | { | |
1095 | int empty; | |
1096 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
1097 | ||
1098 | spin_lock(&osb->osb_lock); | |
1099 | empty = (rm->rm_used == 0); | |
1100 | spin_unlock(&osb->osb_lock); | |
1101 | ||
1102 | return empty; | |
1103 | } | |
1104 | ||
1105 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) | |
1106 | { | |
1107 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); | |
1108 | } | |
1109 | ||
ccd979bd MF |
1110 | /* |
1111 | * JBD Might read a cached version of another nodes journal file. We | |
1112 | * don't want this as this file changes often and we get no | |
1113 | * notification on those changes. The only way to be sure that we've | |
1114 | * got the most up to date version of those blocks then is to force | |
1115 | * read them off disk. Just searching through the buffer cache won't | |
1116 | * work as there may be pages backing this file which are still marked | |
1117 | * up to date. We know things can't change on this file underneath us | |
1118 | * as we have the lock by now :) | |
1119 | */ | |
1120 | static int ocfs2_force_read_journal(struct inode *inode) | |
1121 | { | |
1122 | int status = 0; | |
4f902c37 | 1123 | int i; |
8110b073 | 1124 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
4f902c37 | 1125 | #define CONCURRENT_JOURNAL_FILL 32ULL |
ccd979bd MF |
1126 | struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; |
1127 | ||
1128 | mlog_entry_void(); | |
1129 | ||
ccd979bd MF |
1130 | memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); |
1131 | ||
8110b073 | 1132 | num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, inode->i_size); |
ccd979bd | 1133 | v_blkno = 0; |
8110b073 | 1134 | while (v_blkno < num_blocks) { |
ccd979bd | 1135 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
49cb8d2d | 1136 | &p_blkno, &p_blocks, NULL); |
ccd979bd MF |
1137 | if (status < 0) { |
1138 | mlog_errno(status); | |
1139 | goto bail; | |
1140 | } | |
1141 | ||
1142 | if (p_blocks > CONCURRENT_JOURNAL_FILL) | |
1143 | p_blocks = CONCURRENT_JOURNAL_FILL; | |
1144 | ||
dd4a2c2b MF |
1145 | /* We are reading journal data which should not |
1146 | * be put in the uptodate cache */ | |
da1e9098 JB |
1147 | status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), |
1148 | p_blkno, p_blocks, bhs); | |
ccd979bd MF |
1149 | if (status < 0) { |
1150 | mlog_errno(status); | |
1151 | goto bail; | |
1152 | } | |
1153 | ||
1154 | for(i = 0; i < p_blocks; i++) { | |
1155 | brelse(bhs[i]); | |
1156 | bhs[i] = NULL; | |
1157 | } | |
1158 | ||
1159 | v_blkno += p_blocks; | |
1160 | } | |
1161 | ||
1162 | bail: | |
1163 | for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) | |
a81cb88b | 1164 | brelse(bhs[i]); |
ccd979bd MF |
1165 | mlog_exit(status); |
1166 | return status; | |
1167 | } | |
1168 | ||
1169 | struct ocfs2_la_recovery_item { | |
1170 | struct list_head lri_list; | |
1171 | int lri_slot; | |
1172 | struct ocfs2_dinode *lri_la_dinode; | |
1173 | struct ocfs2_dinode *lri_tl_dinode; | |
2205363d | 1174 | struct ocfs2_quota_recovery *lri_qrec; |
ccd979bd MF |
1175 | }; |
1176 | ||
1177 | /* Does the second half of the recovery process. By this point, the | |
1178 | * node is marked clean and can actually be considered recovered, | |
1179 | * hence it's no longer in the recovery map, but there's still some | |
1180 | * cleanup we can do which shouldn't happen within the recovery thread | |
1181 | * as locking in that context becomes very difficult if we are to take | |
1182 | * recovering nodes into account. | |
1183 | * | |
1184 | * NOTE: This function can and will sleep on recovery of other nodes | |
1185 | * during cluster locking, just like any other ocfs2 process. | |
1186 | */ | |
c4028958 | 1187 | void ocfs2_complete_recovery(struct work_struct *work) |
ccd979bd MF |
1188 | { |
1189 | int ret; | |
c4028958 DH |
1190 | struct ocfs2_journal *journal = |
1191 | container_of(work, struct ocfs2_journal, j_recovery_work); | |
1192 | struct ocfs2_super *osb = journal->j_osb; | |
ccd979bd | 1193 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
800deef3 | 1194 | struct ocfs2_la_recovery_item *item, *n; |
2205363d | 1195 | struct ocfs2_quota_recovery *qrec; |
ccd979bd MF |
1196 | LIST_HEAD(tmp_la_list); |
1197 | ||
1198 | mlog_entry_void(); | |
1199 | ||
1200 | mlog(0, "completing recovery from keventd\n"); | |
1201 | ||
1202 | spin_lock(&journal->j_lock); | |
1203 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
1204 | spin_unlock(&journal->j_lock); | |
1205 | ||
800deef3 | 1206 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
ccd979bd MF |
1207 | list_del_init(&item->lri_list); |
1208 | ||
1209 | mlog(0, "Complete recovery for slot %d\n", item->lri_slot); | |
1210 | ||
19ece546 JK |
1211 | ocfs2_wait_on_quotas(osb); |
1212 | ||
ccd979bd MF |
1213 | la_dinode = item->lri_la_dinode; |
1214 | if (la_dinode) { | |
b0697053 | 1215 | mlog(0, "Clean up local alloc %llu\n", |
1ca1a111 | 1216 | (unsigned long long)le64_to_cpu(la_dinode->i_blkno)); |
ccd979bd MF |
1217 | |
1218 | ret = ocfs2_complete_local_alloc_recovery(osb, | |
1219 | la_dinode); | |
1220 | if (ret < 0) | |
1221 | mlog_errno(ret); | |
1222 | ||
1223 | kfree(la_dinode); | |
1224 | } | |
1225 | ||
1226 | tl_dinode = item->lri_tl_dinode; | |
1227 | if (tl_dinode) { | |
b0697053 | 1228 | mlog(0, "Clean up truncate log %llu\n", |
1ca1a111 | 1229 | (unsigned long long)le64_to_cpu(tl_dinode->i_blkno)); |
ccd979bd MF |
1230 | |
1231 | ret = ocfs2_complete_truncate_log_recovery(osb, | |
1232 | tl_dinode); | |
1233 | if (ret < 0) | |
1234 | mlog_errno(ret); | |
1235 | ||
1236 | kfree(tl_dinode); | |
1237 | } | |
1238 | ||
1239 | ret = ocfs2_recover_orphans(osb, item->lri_slot); | |
1240 | if (ret < 0) | |
1241 | mlog_errno(ret); | |
1242 | ||
2205363d JK |
1243 | qrec = item->lri_qrec; |
1244 | if (qrec) { | |
1245 | mlog(0, "Recovering quota files"); | |
1246 | ret = ocfs2_finish_quota_recovery(osb, qrec, | |
1247 | item->lri_slot); | |
1248 | if (ret < 0) | |
1249 | mlog_errno(ret); | |
1250 | /* Recovery info is already freed now */ | |
1251 | } | |
1252 | ||
ccd979bd MF |
1253 | kfree(item); |
1254 | } | |
1255 | ||
1256 | mlog(0, "Recovery completion\n"); | |
1257 | mlog_exit_void(); | |
1258 | } | |
1259 | ||
1260 | /* NOTE: This function always eats your references to la_dinode and | |
1261 | * tl_dinode, either manually on error, or by passing them to | |
1262 | * ocfs2_complete_recovery */ | |
1263 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
1264 | int slot_num, | |
1265 | struct ocfs2_dinode *la_dinode, | |
2205363d JK |
1266 | struct ocfs2_dinode *tl_dinode, |
1267 | struct ocfs2_quota_recovery *qrec) | |
ccd979bd MF |
1268 | { |
1269 | struct ocfs2_la_recovery_item *item; | |
1270 | ||
afae00ab | 1271 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
1272 | if (!item) { |
1273 | /* Though we wish to avoid it, we are in fact safe in | |
1274 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
1275 | * than capable of reclaiming unused space. */ | |
1276 | if (la_dinode) | |
1277 | kfree(la_dinode); | |
1278 | ||
1279 | if (tl_dinode) | |
1280 | kfree(tl_dinode); | |
1281 | ||
2205363d JK |
1282 | if (qrec) |
1283 | ocfs2_free_quota_recovery(qrec); | |
1284 | ||
ccd979bd MF |
1285 | mlog_errno(-ENOMEM); |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | INIT_LIST_HEAD(&item->lri_list); | |
1290 | item->lri_la_dinode = la_dinode; | |
1291 | item->lri_slot = slot_num; | |
1292 | item->lri_tl_dinode = tl_dinode; | |
2205363d | 1293 | item->lri_qrec = qrec; |
ccd979bd MF |
1294 | |
1295 | spin_lock(&journal->j_lock); | |
1296 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
1297 | queue_work(ocfs2_wq, &journal->j_recovery_work); | |
1298 | spin_unlock(&journal->j_lock); | |
1299 | } | |
1300 | ||
1301 | /* Called by the mount code to queue recovery the last part of | |
9140db04 | 1302 | * recovery for it's own and offline slot(s). */ |
ccd979bd MF |
1303 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1304 | { | |
1305 | struct ocfs2_journal *journal = osb->journal; | |
1306 | ||
9140db04 SE |
1307 | /* No need to queue up our truncate_log as regular cleanup will catch |
1308 | * that */ | |
1309 | ocfs2_queue_recovery_completion(journal, osb->slot_num, | |
1310 | osb->local_alloc_copy, NULL, NULL); | |
1311 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
ccd979bd | 1312 | |
9140db04 SE |
1313 | osb->local_alloc_copy = NULL; |
1314 | osb->dirty = 0; | |
1315 | ||
1316 | /* queue to recover orphan slots for all offline slots */ | |
1317 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1318 | ocfs2_queue_replay_slots(osb); | |
1319 | ocfs2_free_replay_slots(osb); | |
ccd979bd MF |
1320 | } |
1321 | ||
2205363d JK |
1322 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1323 | { | |
1324 | if (osb->quota_rec) { | |
1325 | ocfs2_queue_recovery_completion(osb->journal, | |
1326 | osb->slot_num, | |
1327 | NULL, | |
1328 | NULL, | |
1329 | osb->quota_rec); | |
1330 | osb->quota_rec = NULL; | |
1331 | } | |
1332 | } | |
1333 | ||
ccd979bd MF |
1334 | static int __ocfs2_recovery_thread(void *arg) |
1335 | { | |
2205363d | 1336 | int status, node_num, slot_num; |
ccd979bd | 1337 | struct ocfs2_super *osb = arg; |
553abd04 | 1338 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
2205363d JK |
1339 | int *rm_quota = NULL; |
1340 | int rm_quota_used = 0, i; | |
1341 | struct ocfs2_quota_recovery *qrec; | |
ccd979bd MF |
1342 | |
1343 | mlog_entry_void(); | |
1344 | ||
1345 | status = ocfs2_wait_on_mount(osb); | |
1346 | if (status < 0) { | |
1347 | goto bail; | |
1348 | } | |
1349 | ||
2205363d JK |
1350 | rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS); |
1351 | if (!rm_quota) { | |
1352 | status = -ENOMEM; | |
1353 | goto bail; | |
1354 | } | |
ccd979bd MF |
1355 | restart: |
1356 | status = ocfs2_super_lock(osb, 1); | |
1357 | if (status < 0) { | |
1358 | mlog_errno(status); | |
1359 | goto bail; | |
1360 | } | |
1361 | ||
9140db04 SE |
1362 | status = ocfs2_compute_replay_slots(osb); |
1363 | if (status < 0) | |
1364 | mlog_errno(status); | |
1365 | ||
1366 | /* queue recovery for our own slot */ | |
1367 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
1368 | NULL, NULL); | |
1369 | ||
553abd04 JB |
1370 | spin_lock(&osb->osb_lock); |
1371 | while (rm->rm_used) { | |
1372 | /* It's always safe to remove entry zero, as we won't | |
1373 | * clear it until ocfs2_recover_node() has succeeded. */ | |
1374 | node_num = rm->rm_entries[0]; | |
1375 | spin_unlock(&osb->osb_lock); | |
2205363d JK |
1376 | mlog(0, "checking node %d\n", node_num); |
1377 | slot_num = ocfs2_node_num_to_slot(osb, node_num); | |
1378 | if (slot_num == -ENOENT) { | |
1379 | status = 0; | |
1380 | mlog(0, "no slot for this node, so no recovery" | |
1381 | "required.\n"); | |
1382 | goto skip_recovery; | |
1383 | } | |
1384 | mlog(0, "node %d was using slot %d\n", node_num, slot_num); | |
1385 | ||
1386 | /* It is a bit subtle with quota recovery. We cannot do it | |
1387 | * immediately because we have to obtain cluster locks from | |
1388 | * quota files and we also don't want to just skip it because | |
1389 | * then quota usage would be out of sync until some node takes | |
1390 | * the slot. So we remember which nodes need quota recovery | |
1391 | * and when everything else is done, we recover quotas. */ | |
1392 | for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++); | |
1393 | if (i == rm_quota_used) | |
1394 | rm_quota[rm_quota_used++] = slot_num; | |
1395 | ||
1396 | status = ocfs2_recover_node(osb, node_num, slot_num); | |
1397 | skip_recovery: | |
553abd04 JB |
1398 | if (!status) { |
1399 | ocfs2_recovery_map_clear(osb, node_num); | |
1400 | } else { | |
ccd979bd MF |
1401 | mlog(ML_ERROR, |
1402 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1403 | status, node_num, | |
1404 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1405 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
ccd979bd MF |
1406 | } |
1407 | ||
553abd04 | 1408 | spin_lock(&osb->osb_lock); |
ccd979bd | 1409 | } |
553abd04 JB |
1410 | spin_unlock(&osb->osb_lock); |
1411 | mlog(0, "All nodes recovered\n"); | |
1412 | ||
539d8264 SM |
1413 | /* Refresh all journal recovery generations from disk */ |
1414 | status = ocfs2_check_journals_nolocks(osb); | |
1415 | status = (status == -EROFS) ? 0 : status; | |
1416 | if (status < 0) | |
1417 | mlog_errno(status); | |
1418 | ||
2205363d JK |
1419 | /* Now it is right time to recover quotas... We have to do this under |
1420 | * superblock lock so that noone can start using the slot (and crash) | |
1421 | * before we recover it */ | |
1422 | for (i = 0; i < rm_quota_used; i++) { | |
1423 | qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); | |
1424 | if (IS_ERR(qrec)) { | |
1425 | status = PTR_ERR(qrec); | |
1426 | mlog_errno(status); | |
1427 | continue; | |
1428 | } | |
1429 | ocfs2_queue_recovery_completion(osb->journal, rm_quota[i], | |
1430 | NULL, NULL, qrec); | |
1431 | } | |
1432 | ||
ccd979bd MF |
1433 | ocfs2_super_unlock(osb, 1); |
1434 | ||
9140db04 SE |
1435 | /* queue recovery for offline slots */ |
1436 | ocfs2_queue_replay_slots(osb); | |
ccd979bd MF |
1437 | |
1438 | bail: | |
c74ec2f7 | 1439 | mutex_lock(&osb->recovery_lock); |
553abd04 | 1440 | if (!status && !ocfs2_recovery_completed(osb)) { |
c74ec2f7 | 1441 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1442 | goto restart; |
1443 | } | |
1444 | ||
9140db04 | 1445 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1446 | osb->recovery_thread_task = NULL; |
1447 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1448 | wake_up(&osb->recovery_event); | |
1449 | ||
c74ec2f7 | 1450 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1451 | |
2205363d JK |
1452 | if (rm_quota) |
1453 | kfree(rm_quota); | |
1454 | ||
ccd979bd MF |
1455 | mlog_exit(status); |
1456 | /* no one is callint kthread_stop() for us so the kthread() api | |
1457 | * requires that we call do_exit(). And it isn't exported, but | |
1458 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1459 | complete_and_exit(NULL, status); | |
1460 | return status; | |
1461 | } | |
1462 | ||
1463 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1464 | { | |
1465 | mlog_entry("(node_num=%d, osb->node_num = %d)\n", | |
1466 | node_num, osb->node_num); | |
1467 | ||
c74ec2f7 | 1468 | mutex_lock(&osb->recovery_lock); |
ccd979bd MF |
1469 | if (osb->disable_recovery) |
1470 | goto out; | |
1471 | ||
1472 | /* People waiting on recovery will wait on | |
1473 | * the recovery map to empty. */ | |
553abd04 JB |
1474 | if (ocfs2_recovery_map_set(osb, node_num)) |
1475 | mlog(0, "node %d already in recovery map.\n", node_num); | |
ccd979bd MF |
1476 | |
1477 | mlog(0, "starting recovery thread...\n"); | |
1478 | ||
1479 | if (osb->recovery_thread_task) | |
1480 | goto out; | |
1481 | ||
1482 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
78427043 | 1483 | "ocfs2rec"); |
ccd979bd MF |
1484 | if (IS_ERR(osb->recovery_thread_task)) { |
1485 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1486 | osb->recovery_thread_task = NULL; | |
1487 | } | |
1488 | ||
1489 | out: | |
c74ec2f7 | 1490 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1491 | wake_up(&osb->recovery_event); |
1492 | ||
1493 | mlog_exit_void(); | |
1494 | } | |
1495 | ||
539d8264 SM |
1496 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1497 | int slot_num, | |
1498 | struct buffer_head **bh, | |
1499 | struct inode **ret_inode) | |
1500 | { | |
1501 | int status = -EACCES; | |
1502 | struct inode *inode = NULL; | |
1503 | ||
1504 | BUG_ON(slot_num >= osb->max_slots); | |
1505 | ||
1506 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1507 | slot_num); | |
1508 | if (!inode || is_bad_inode(inode)) { | |
1509 | mlog_errno(status); | |
1510 | goto bail; | |
1511 | } | |
1512 | SET_INODE_JOURNAL(inode); | |
1513 | ||
b657c95c | 1514 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
539d8264 SM |
1515 | if (status < 0) { |
1516 | mlog_errno(status); | |
1517 | goto bail; | |
1518 | } | |
1519 | ||
1520 | status = 0; | |
1521 | ||
1522 | bail: | |
1523 | if (inode) { | |
1524 | if (status || !ret_inode) | |
1525 | iput(inode); | |
1526 | else | |
1527 | *ret_inode = inode; | |
1528 | } | |
1529 | return status; | |
1530 | } | |
1531 | ||
ccd979bd MF |
1532 | /* Does the actual journal replay and marks the journal inode as |
1533 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1534 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1535 | int node_num, | |
1536 | int slot_num) | |
1537 | { | |
1538 | int status; | |
1539 | int got_lock = 0; | |
1540 | unsigned int flags; | |
1541 | struct inode *inode = NULL; | |
1542 | struct ocfs2_dinode *fe; | |
1543 | journal_t *journal = NULL; | |
1544 | struct buffer_head *bh = NULL; | |
539d8264 | 1545 | u32 slot_reco_gen; |
ccd979bd | 1546 | |
539d8264 SM |
1547 | status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); |
1548 | if (status) { | |
ccd979bd MF |
1549 | mlog_errno(status); |
1550 | goto done; | |
1551 | } | |
539d8264 SM |
1552 | |
1553 | fe = (struct ocfs2_dinode *)bh->b_data; | |
1554 | slot_reco_gen = ocfs2_get_recovery_generation(fe); | |
1555 | brelse(bh); | |
1556 | bh = NULL; | |
1557 | ||
1558 | /* | |
1559 | * As the fs recovery is asynchronous, there is a small chance that | |
1560 | * another node mounted (and recovered) the slot before the recovery | |
1561 | * thread could get the lock. To handle that, we dirty read the journal | |
1562 | * inode for that slot to get the recovery generation. If it is | |
1563 | * different than what we expected, the slot has been recovered. | |
1564 | * If not, it needs recovery. | |
1565 | */ | |
1566 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { | |
1567 | mlog(0, "Slot %u already recovered (old/new=%u/%u)\n", slot_num, | |
1568 | osb->slot_recovery_generations[slot_num], slot_reco_gen); | |
1569 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
1570 | status = -EBUSY; | |
ccd979bd MF |
1571 | goto done; |
1572 | } | |
539d8264 SM |
1573 | |
1574 | /* Continue with recovery as the journal has not yet been recovered */ | |
ccd979bd | 1575 | |
e63aecb6 | 1576 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd | 1577 | if (status < 0) { |
e63aecb6 | 1578 | mlog(0, "status returned from ocfs2_inode_lock=%d\n", status); |
ccd979bd MF |
1579 | if (status != -ERESTARTSYS) |
1580 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1581 | goto done; | |
1582 | } | |
1583 | got_lock = 1; | |
1584 | ||
1585 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1586 | ||
1587 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
539d8264 | 1588 | slot_reco_gen = ocfs2_get_recovery_generation(fe); |
ccd979bd MF |
1589 | |
1590 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
1591 | mlog(0, "No recovery required for node %d\n", node_num); | |
539d8264 SM |
1592 | /* Refresh recovery generation for the slot */ |
1593 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
ccd979bd MF |
1594 | goto done; |
1595 | } | |
1596 | ||
9140db04 SE |
1597 | /* we need to run complete recovery for offline orphan slots */ |
1598 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1599 | ||
ccd979bd MF |
1600 | mlog(ML_NOTICE, "Recovering node %d from slot %d on device (%u,%u)\n", |
1601 | node_num, slot_num, | |
1602 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1603 | ||
1604 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1605 | ||
1606 | status = ocfs2_force_read_journal(inode); | |
1607 | if (status < 0) { | |
1608 | mlog_errno(status); | |
1609 | goto done; | |
1610 | } | |
1611 | ||
1612 | mlog(0, "calling journal_init_inode\n"); | |
2b4e30fb | 1613 | journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
1614 | if (journal == NULL) { |
1615 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1616 | status = -EIO; | |
1617 | goto done; | |
1618 | } | |
1619 | ||
2b4e30fb | 1620 | status = jbd2_journal_load(journal); |
ccd979bd MF |
1621 | if (status < 0) { |
1622 | mlog_errno(status); | |
1623 | if (!igrab(inode)) | |
1624 | BUG(); | |
2b4e30fb | 1625 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1626 | goto done; |
1627 | } | |
1628 | ||
1629 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1630 | ||
1631 | /* wipe the journal */ | |
1632 | mlog(0, "flushing the journal.\n"); | |
2b4e30fb JB |
1633 | jbd2_journal_lock_updates(journal); |
1634 | status = jbd2_journal_flush(journal); | |
1635 | jbd2_journal_unlock_updates(journal); | |
ccd979bd MF |
1636 | if (status < 0) |
1637 | mlog_errno(status); | |
1638 | ||
1639 | /* This will mark the node clean */ | |
1640 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1641 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1642 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1643 | ||
539d8264 SM |
1644 | /* Increment recovery generation to indicate successful recovery */ |
1645 | ocfs2_bump_recovery_generation(fe); | |
1646 | osb->slot_recovery_generations[slot_num] = | |
1647 | ocfs2_get_recovery_generation(fe); | |
1648 | ||
13723d00 | 1649 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 1650 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); |
ccd979bd MF |
1651 | if (status < 0) |
1652 | mlog_errno(status); | |
1653 | ||
1654 | if (!igrab(inode)) | |
1655 | BUG(); | |
1656 | ||
2b4e30fb | 1657 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1658 | |
1659 | done: | |
1660 | /* drop the lock on this nodes journal */ | |
1661 | if (got_lock) | |
e63aecb6 | 1662 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1663 | |
1664 | if (inode) | |
1665 | iput(inode); | |
1666 | ||
a81cb88b | 1667 | brelse(bh); |
ccd979bd MF |
1668 | |
1669 | mlog_exit(status); | |
1670 | return status; | |
1671 | } | |
1672 | ||
1673 | /* | |
1674 | * Do the most important parts of node recovery: | |
1675 | * - Replay it's journal | |
1676 | * - Stamp a clean local allocator file | |
1677 | * - Stamp a clean truncate log | |
1678 | * - Mark the node clean | |
1679 | * | |
1680 | * If this function completes without error, a node in OCFS2 can be | |
1681 | * said to have been safely recovered. As a result, failure during the | |
1682 | * second part of a nodes recovery process (local alloc recovery) is | |
1683 | * far less concerning. | |
1684 | */ | |
1685 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 1686 | int node_num, int slot_num) |
ccd979bd MF |
1687 | { |
1688 | int status = 0; | |
ccd979bd MF |
1689 | struct ocfs2_dinode *la_copy = NULL; |
1690 | struct ocfs2_dinode *tl_copy = NULL; | |
1691 | ||
2205363d JK |
1692 | mlog_entry("(node_num=%d, slot_num=%d, osb->node_num = %d)\n", |
1693 | node_num, slot_num, osb->node_num); | |
ccd979bd MF |
1694 | |
1695 | /* Should not ever be called to recover ourselves -- in that | |
1696 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1697 | BUG_ON(osb->node_num == node_num); |
ccd979bd | 1698 | |
ccd979bd MF |
1699 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1700 | if (status < 0) { | |
539d8264 SM |
1701 | if (status == -EBUSY) { |
1702 | mlog(0, "Skipping recovery for slot %u (node %u) " | |
1703 | "as another node has recovered it\n", slot_num, | |
1704 | node_num); | |
1705 | status = 0; | |
1706 | goto done; | |
1707 | } | |
ccd979bd MF |
1708 | mlog_errno(status); |
1709 | goto done; | |
1710 | } | |
1711 | ||
1712 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1713 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1714 | if (status < 0) { | |
1715 | mlog_errno(status); | |
1716 | goto done; | |
1717 | } | |
1718 | ||
1719 | /* An error from begin_truncate_log_recovery is not | |
1720 | * serious enough to warrant halting the rest of | |
1721 | * recovery. */ | |
1722 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1723 | if (status < 0) | |
1724 | mlog_errno(status); | |
1725 | ||
1726 | /* Likewise, this would be a strange but ultimately not so | |
1727 | * harmful place to get an error... */ | |
8e8a4603 | 1728 | status = ocfs2_clear_slot(osb, slot_num); |
ccd979bd MF |
1729 | if (status < 0) |
1730 | mlog_errno(status); | |
1731 | ||
1732 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1733 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
2205363d | 1734 | tl_copy, NULL); |
ccd979bd MF |
1735 | |
1736 | status = 0; | |
1737 | done: | |
1738 | ||
1739 | mlog_exit(status); | |
1740 | return status; | |
1741 | } | |
1742 | ||
1743 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1744 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1745 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1746 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1747 | int slot_num) | |
1748 | { | |
1749 | int status, flags; | |
1750 | struct inode *inode = NULL; | |
1751 | ||
1752 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1753 | slot_num); | |
1754 | if (inode == NULL) { | |
1755 | mlog(ML_ERROR, "access error\n"); | |
1756 | status = -EACCES; | |
1757 | goto bail; | |
1758 | } | |
1759 | if (is_bad_inode(inode)) { | |
1760 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1761 | iput(inode); | |
1762 | inode = NULL; | |
1763 | status = -EACCES; | |
1764 | goto bail; | |
1765 | } | |
1766 | SET_INODE_JOURNAL(inode); | |
1767 | ||
1768 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
e63aecb6 | 1769 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
ccd979bd MF |
1770 | if (status < 0) { |
1771 | if (status != -EAGAIN) | |
1772 | mlog_errno(status); | |
1773 | goto bail; | |
1774 | } | |
1775 | ||
e63aecb6 | 1776 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1777 | bail: |
1778 | if (inode) | |
1779 | iput(inode); | |
1780 | ||
1781 | return status; | |
1782 | } | |
1783 | ||
1784 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1785 | * slot info struct has been updated from disk. */ | |
1786 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1787 | { | |
d85b20e4 JB |
1788 | unsigned int node_num; |
1789 | int status, i; | |
a1af7d15 | 1790 | u32 gen; |
539d8264 SM |
1791 | struct buffer_head *bh = NULL; |
1792 | struct ocfs2_dinode *di; | |
ccd979bd MF |
1793 | |
1794 | /* This is called with the super block cluster lock, so we | |
1795 | * know that the slot map can't change underneath us. */ | |
1796 | ||
d85b20e4 | 1797 | for (i = 0; i < osb->max_slots; i++) { |
539d8264 SM |
1798 | /* Read journal inode to get the recovery generation */ |
1799 | status = ocfs2_read_journal_inode(osb, i, &bh, NULL); | |
1800 | if (status) { | |
1801 | mlog_errno(status); | |
1802 | goto bail; | |
1803 | } | |
1804 | di = (struct ocfs2_dinode *)bh->b_data; | |
a1af7d15 | 1805 | gen = ocfs2_get_recovery_generation(di); |
539d8264 SM |
1806 | brelse(bh); |
1807 | bh = NULL; | |
1808 | ||
a1af7d15 MF |
1809 | spin_lock(&osb->osb_lock); |
1810 | osb->slot_recovery_generations[i] = gen; | |
1811 | ||
539d8264 SM |
1812 | mlog(0, "Slot %u recovery generation is %u\n", i, |
1813 | osb->slot_recovery_generations[i]); | |
1814 | ||
a1af7d15 MF |
1815 | if (i == osb->slot_num) { |
1816 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1817 | continue; |
a1af7d15 | 1818 | } |
d85b20e4 JB |
1819 | |
1820 | status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); | |
a1af7d15 MF |
1821 | if (status == -ENOENT) { |
1822 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1823 | continue; |
a1af7d15 | 1824 | } |
ccd979bd | 1825 | |
a1af7d15 MF |
1826 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1827 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1828 | continue; |
a1af7d15 | 1829 | } |
d85b20e4 | 1830 | spin_unlock(&osb->osb_lock); |
ccd979bd MF |
1831 | |
1832 | /* Ok, we have a slot occupied by another node which | |
1833 | * is not in the recovery map. We trylock his journal | |
1834 | * file here to test if he's alive. */ | |
1835 | status = ocfs2_trylock_journal(osb, i); | |
1836 | if (!status) { | |
1837 | /* Since we're called from mount, we know that | |
1838 | * the recovery thread can't race us on | |
1839 | * setting / checking the recovery bits. */ | |
1840 | ocfs2_recovery_thread(osb, node_num); | |
1841 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1842 | mlog_errno(status); | |
1843 | goto bail; | |
1844 | } | |
ccd979bd | 1845 | } |
ccd979bd MF |
1846 | |
1847 | status = 0; | |
1848 | bail: | |
1849 | mlog_exit(status); | |
1850 | return status; | |
1851 | } | |
1852 | ||
83273932 SE |
1853 | /* |
1854 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some | |
1855 | * randomness to the timeout to minimize multple nodes firing the timer at the | |
1856 | * same time. | |
1857 | */ | |
1858 | static inline unsigned long ocfs2_orphan_scan_timeout(void) | |
1859 | { | |
1860 | unsigned long time; | |
1861 | ||
1862 | get_random_bytes(&time, sizeof(time)); | |
1863 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); | |
1864 | return msecs_to_jiffies(time); | |
1865 | } | |
1866 | ||
1867 | /* | |
1868 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for | |
1869 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This | |
1870 | * is done to catch any orphans that are left over in orphan directories. | |
1871 | * | |
1872 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT | |
1873 | * seconds. It gets an EX lock on os_lockres and checks sequence number | |
1874 | * stored in LVB. If the sequence number has changed, it means some other | |
1875 | * node has done the scan. This node skips the scan and tracks the | |
1876 | * sequence number. If the sequence number didn't change, it means a scan | |
1877 | * hasn't happened. The node queues a scan and increments the | |
1878 | * sequence number in the LVB. | |
1879 | */ | |
1880 | void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) | |
1881 | { | |
1882 | struct ocfs2_orphan_scan *os; | |
1883 | int status, i; | |
1884 | u32 seqno = 0; | |
1885 | ||
1886 | os = &osb->osb_orphan_scan; | |
1887 | ||
692684e1 SM |
1888 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
1889 | goto out; | |
1890 | ||
df152c24 | 1891 | status = ocfs2_orphan_scan_lock(osb, &seqno); |
83273932 SE |
1892 | if (status < 0) { |
1893 | if (status != -EAGAIN) | |
1894 | mlog_errno(status); | |
1895 | goto out; | |
1896 | } | |
1897 | ||
692684e1 SM |
1898 | /* Do no queue the tasks if the volume is being umounted */ |
1899 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
1900 | goto unlock; | |
1901 | ||
83273932 SE |
1902 | if (os->os_seqno != seqno) { |
1903 | os->os_seqno = seqno; | |
1904 | goto unlock; | |
1905 | } | |
1906 | ||
1907 | for (i = 0; i < osb->max_slots; i++) | |
1908 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, | |
1909 | NULL); | |
1910 | /* | |
1911 | * We queued a recovery on orphan slots, increment the sequence | |
1912 | * number and update LVB so other node will skip the scan for a while | |
1913 | */ | |
1914 | seqno++; | |
15633a22 SE |
1915 | os->os_count++; |
1916 | os->os_scantime = CURRENT_TIME; | |
83273932 | 1917 | unlock: |
df152c24 | 1918 | ocfs2_orphan_scan_unlock(osb, seqno); |
83273932 SE |
1919 | out: |
1920 | return; | |
1921 | } | |
1922 | ||
1923 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ | |
1924 | void ocfs2_orphan_scan_work(struct work_struct *work) | |
1925 | { | |
1926 | struct ocfs2_orphan_scan *os; | |
1927 | struct ocfs2_super *osb; | |
1928 | ||
1929 | os = container_of(work, struct ocfs2_orphan_scan, | |
1930 | os_orphan_scan_work.work); | |
1931 | osb = os->os_osb; | |
1932 | ||
1933 | mutex_lock(&os->os_lock); | |
1934 | ocfs2_queue_orphan_scan(osb); | |
692684e1 SM |
1935 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) |
1936 | schedule_delayed_work(&os->os_orphan_scan_work, | |
1937 | ocfs2_orphan_scan_timeout()); | |
83273932 SE |
1938 | mutex_unlock(&os->os_lock); |
1939 | } | |
1940 | ||
1941 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) | |
1942 | { | |
1943 | struct ocfs2_orphan_scan *os; | |
1944 | ||
1945 | os = &osb->osb_orphan_scan; | |
df152c24 SM |
1946 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { |
1947 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1948 | mutex_lock(&os->os_lock); | |
1949 | cancel_delayed_work(&os->os_orphan_scan_work); | |
1950 | mutex_unlock(&os->os_lock); | |
1951 | } | |
83273932 SE |
1952 | } |
1953 | ||
df152c24 | 1954 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
83273932 SE |
1955 | { |
1956 | struct ocfs2_orphan_scan *os; | |
1957 | ||
1958 | os = &osb->osb_orphan_scan; | |
1959 | os->os_osb = osb; | |
15633a22 | 1960 | os->os_count = 0; |
3211949f | 1961 | os->os_seqno = 0; |
83273932 | 1962 | mutex_init(&os->os_lock); |
df152c24 | 1963 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
8b712cd5 | 1964 | } |
83273932 | 1965 | |
8b712cd5 JM |
1966 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
1967 | { | |
1968 | struct ocfs2_orphan_scan *os; | |
1969 | ||
1970 | os = &osb->osb_orphan_scan; | |
1971 | os->os_scantime = CURRENT_TIME; | |
df152c24 SM |
1972 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
1973 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1974 | else { | |
1975 | atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); | |
1976 | schedule_delayed_work(&os->os_orphan_scan_work, | |
1977 | ocfs2_orphan_scan_timeout()); | |
1978 | } | |
83273932 SE |
1979 | } |
1980 | ||
5eae5b96 MF |
1981 | struct ocfs2_orphan_filldir_priv { |
1982 | struct inode *head; | |
1983 | struct ocfs2_super *osb; | |
1984 | }; | |
1985 | ||
1986 | static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len, | |
1987 | loff_t pos, u64 ino, unsigned type) | |
1988 | { | |
1989 | struct ocfs2_orphan_filldir_priv *p = priv; | |
1990 | struct inode *iter; | |
1991 | ||
1992 | if (name_len == 1 && !strncmp(".", name, 1)) | |
1993 | return 0; | |
1994 | if (name_len == 2 && !strncmp("..", name, 2)) | |
1995 | return 0; | |
1996 | ||
1997 | /* Skip bad inodes so that recovery can continue */ | |
1998 | iter = ocfs2_iget(p->osb, ino, | |
5fa0613e | 1999 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); |
5eae5b96 MF |
2000 | if (IS_ERR(iter)) |
2001 | return 0; | |
2002 | ||
2003 | mlog(0, "queue orphan %llu\n", | |
2004 | (unsigned long long)OCFS2_I(iter)->ip_blkno); | |
2005 | /* No locking is required for the next_orphan queue as there | |
2006 | * is only ever a single process doing orphan recovery. */ | |
2007 | OCFS2_I(iter)->ip_next_orphan = p->head; | |
2008 | p->head = iter; | |
2009 | ||
2010 | return 0; | |
2011 | } | |
2012 | ||
b4df6ed8 MF |
2013 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
2014 | int slot, | |
2015 | struct inode **head) | |
ccd979bd | 2016 | { |
b4df6ed8 | 2017 | int status; |
ccd979bd | 2018 | struct inode *orphan_dir_inode = NULL; |
5eae5b96 MF |
2019 | struct ocfs2_orphan_filldir_priv priv; |
2020 | loff_t pos = 0; | |
2021 | ||
2022 | priv.osb = osb; | |
2023 | priv.head = *head; | |
ccd979bd MF |
2024 | |
2025 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2026 | ORPHAN_DIR_SYSTEM_INODE, | |
2027 | slot); | |
2028 | if (!orphan_dir_inode) { | |
2029 | status = -ENOENT; | |
2030 | mlog_errno(status); | |
b4df6ed8 | 2031 | return status; |
2bd63216 | 2032 | } |
ccd979bd | 2033 | |
1b1dcc1b | 2034 | mutex_lock(&orphan_dir_inode->i_mutex); |
e63aecb6 | 2035 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
ccd979bd | 2036 | if (status < 0) { |
ccd979bd MF |
2037 | mlog_errno(status); |
2038 | goto out; | |
2039 | } | |
ccd979bd | 2040 | |
5eae5b96 MF |
2041 | status = ocfs2_dir_foreach(orphan_dir_inode, &pos, &priv, |
2042 | ocfs2_orphan_filldir); | |
2043 | if (status) { | |
2044 | mlog_errno(status); | |
a86370fb | 2045 | goto out_cluster; |
ccd979bd | 2046 | } |
ccd979bd | 2047 | |
5eae5b96 MF |
2048 | *head = priv.head; |
2049 | ||
a86370fb | 2050 | out_cluster: |
e63aecb6 | 2051 | ocfs2_inode_unlock(orphan_dir_inode, 0); |
b4df6ed8 MF |
2052 | out: |
2053 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 2054 | iput(orphan_dir_inode); |
b4df6ed8 MF |
2055 | return status; |
2056 | } | |
2057 | ||
2058 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
2059 | int slot) | |
2060 | { | |
2061 | int ret; | |
2062 | ||
2063 | spin_lock(&osb->osb_lock); | |
2064 | ret = !osb->osb_orphan_wipes[slot]; | |
2065 | spin_unlock(&osb->osb_lock); | |
2066 | return ret; | |
2067 | } | |
2068 | ||
2069 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
2070 | int slot) | |
2071 | { | |
2072 | spin_lock(&osb->osb_lock); | |
2073 | /* Mark ourselves such that new processes in delete_inode() | |
2074 | * know to quit early. */ | |
2075 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2076 | while (osb->osb_orphan_wipes[slot]) { | |
2077 | /* If any processes are already in the middle of an | |
2078 | * orphan wipe on this dir, then we need to wait for | |
2079 | * them. */ | |
2080 | spin_unlock(&osb->osb_lock); | |
2081 | wait_event_interruptible(osb->osb_wipe_event, | |
2082 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
2083 | spin_lock(&osb->osb_lock); | |
2084 | } | |
2085 | spin_unlock(&osb->osb_lock); | |
2086 | } | |
2087 | ||
2088 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
2089 | int slot) | |
2090 | { | |
2091 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2092 | } | |
2093 | ||
2094 | /* | |
2095 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
2096 | * must run during recovery. Our strategy here is to build a list of | |
2097 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
2098 | * (most) of the rest of the work. | |
2099 | * | |
2100 | * Orphan recovery can happen at any time, not just mount so we have a | |
2101 | * couple of extra considerations. | |
2102 | * | |
2103 | * - We grab as many inodes as we can under the orphan dir lock - | |
2104 | * doing iget() outside the orphan dir risks getting a reference on | |
2105 | * an invalid inode. | |
2106 | * - We must be sure not to deadlock with other processes on the | |
2107 | * system wanting to run delete_inode(). This can happen when they go | |
2108 | * to lock the orphan dir and the orphan recovery process attempts to | |
2109 | * iget() inside the orphan dir lock. This can be avoided by | |
2110 | * advertising our state to ocfs2_delete_inode(). | |
2111 | */ | |
2112 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
2113 | int slot) | |
2114 | { | |
2115 | int ret = 0; | |
2116 | struct inode *inode = NULL; | |
2117 | struct inode *iter; | |
2118 | struct ocfs2_inode_info *oi; | |
2119 | ||
2120 | mlog(0, "Recover inodes from orphan dir in slot %d\n", slot); | |
2121 | ||
2122 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
2123 | ret = ocfs2_queue_orphans(osb, slot, &inode); | |
2124 | ocfs2_clear_recovering_orphan_dir(osb, slot); | |
2125 | ||
2126 | /* Error here should be noted, but we want to continue with as | |
2127 | * many queued inodes as we've got. */ | |
2128 | if (ret) | |
2129 | mlog_errno(ret); | |
ccd979bd MF |
2130 | |
2131 | while (inode) { | |
2132 | oi = OCFS2_I(inode); | |
b0697053 | 2133 | mlog(0, "iput orphan %llu\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
2134 | |
2135 | iter = oi->ip_next_orphan; | |
2136 | ||
2137 | spin_lock(&oi->ip_lock); | |
34d024f8 MF |
2138 | /* The remote delete code may have set these on the |
2139 | * assumption that the other node would wipe them | |
2140 | * successfully. If they are still in the node's | |
2141 | * orphan dir, we need to reset that state. */ | |
ccd979bd MF |
2142 | oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); |
2143 | ||
2144 | /* Set the proper information to get us going into | |
2145 | * ocfs2_delete_inode. */ | |
2146 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
2147 | spin_unlock(&oi->ip_lock); |
2148 | ||
2149 | iput(inode); | |
2150 | ||
2151 | inode = iter; | |
2152 | } | |
2153 | ||
b4df6ed8 | 2154 | return ret; |
ccd979bd MF |
2155 | } |
2156 | ||
19ece546 | 2157 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
ccd979bd MF |
2158 | { |
2159 | /* This check is good because ocfs2 will wait on our recovery | |
2160 | * thread before changing it to something other than MOUNTED | |
2161 | * or DISABLED. */ | |
2162 | wait_event(osb->osb_mount_event, | |
19ece546 JK |
2163 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2164 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || | |
ccd979bd MF |
2165 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2166 | ||
2167 | /* If there's an error on mount, then we may never get to the | |
2168 | * MOUNTED flag, but this is set right before | |
2169 | * dismount_volume() so we can trust it. */ | |
2170 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
2171 | mlog(0, "mount error, exiting!\n"); | |
2172 | return -EBUSY; | |
2173 | } | |
2174 | ||
2175 | return 0; | |
2176 | } | |
2177 | ||
2178 | static int ocfs2_commit_thread(void *arg) | |
2179 | { | |
2180 | int status; | |
2181 | struct ocfs2_super *osb = arg; | |
2182 | struct ocfs2_journal *journal = osb->journal; | |
2183 | ||
2184 | /* we can trust j_num_trans here because _should_stop() is only set in | |
2185 | * shutdown and nobody other than ourselves should be able to start | |
2186 | * transactions. committing on shutdown might take a few iterations | |
2187 | * as final transactions put deleted inodes on the list */ | |
2188 | while (!(kthread_should_stop() && | |
2189 | atomic_read(&journal->j_num_trans) == 0)) { | |
2190 | ||
745ae8ba MF |
2191 | wait_event_interruptible(osb->checkpoint_event, |
2192 | atomic_read(&journal->j_num_trans) | |
2193 | || kthread_should_stop()); | |
ccd979bd MF |
2194 | |
2195 | status = ocfs2_commit_cache(osb); | |
2196 | if (status < 0) | |
2197 | mlog_errno(status); | |
2198 | ||
2199 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
2200 | mlog(ML_KTHREAD, | |
2201 | "commit_thread: %u transactions pending on " | |
2202 | "shutdown\n", | |
2203 | atomic_read(&journal->j_num_trans)); | |
2204 | } | |
2205 | } | |
2206 | ||
2207 | return 0; | |
2208 | } | |
2209 | ||
539d8264 SM |
2210 | /* Reads all the journal inodes without taking any cluster locks. Used |
2211 | * for hard readonly access to determine whether any journal requires | |
2212 | * recovery. Also used to refresh the recovery generation numbers after | |
2213 | * a journal has been recovered by another node. | |
2214 | */ | |
ccd979bd MF |
2215 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2216 | { | |
2217 | int ret = 0; | |
2218 | unsigned int slot; | |
539d8264 | 2219 | struct buffer_head *di_bh = NULL; |
ccd979bd | 2220 | struct ocfs2_dinode *di; |
539d8264 | 2221 | int journal_dirty = 0; |
ccd979bd MF |
2222 | |
2223 | for(slot = 0; slot < osb->max_slots; slot++) { | |
539d8264 SM |
2224 | ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); |
2225 | if (ret) { | |
ccd979bd MF |
2226 | mlog_errno(ret); |
2227 | goto out; | |
2228 | } | |
2229 | ||
2230 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2231 | ||
539d8264 SM |
2232 | osb->slot_recovery_generations[slot] = |
2233 | ocfs2_get_recovery_generation(di); | |
2234 | ||
ccd979bd MF |
2235 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2236 | OCFS2_JOURNAL_DIRTY_FL) | |
539d8264 | 2237 | journal_dirty = 1; |
ccd979bd MF |
2238 | |
2239 | brelse(di_bh); | |
539d8264 | 2240 | di_bh = NULL; |
ccd979bd MF |
2241 | } |
2242 | ||
2243 | out: | |
539d8264 SM |
2244 | if (journal_dirty) |
2245 | ret = -EROFS; | |
ccd979bd MF |
2246 | return ret; |
2247 | } |