blob: 0a42ae96dca7d4a0f662505e0e51206895ce4156 [file] [log] [blame]
Mark Fashehccd979b2005-12-15 14:31:24 -08001/* -*- 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>
Srinivas Eeda83273932009-06-03 17:02:55 -070031#include <linux/time.h>
32#include <linux/random.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080033
Mark Fashehccd979b2005-12-15 14:31:24 -080034#include <cluster/masklog.h>
35
36#include "ocfs2.h"
37
38#include "alloc.h"
Joel Becker50655ae2008-09-11 15:53:07 -070039#include "blockcheck.h"
Mark Fasheh316f4b92007-09-07 18:21:26 -070040#include "dir.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080041#include "dlmglue.h"
42#include "extent_map.h"
43#include "heartbeat.h"
44#include "inode.h"
45#include "journal.h"
46#include "localalloc.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080047#include "slot_map.h"
48#include "super.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080049#include "sysfile.h"
Joel Becker0cf2f762009-02-12 16:41:25 -080050#include "uptodate.h"
Jan Kara22053632008-10-20 23:50:38 +020051#include "quota.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080052
53#include "buffer_head_io.h"
Tao Mab4107952011-02-24 14:15:35 +080054#include "ocfs2_trace.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080055
Ingo Molnar34af9462006-06-27 02:53:55 -070056DEFINE_SPINLOCK(trans_inc_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -080057
Srinivas Eeda83273932009-06-03 17:02:55 -070058#define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000
59
Mark Fashehccd979b2005-12-15 14:31:24 -080060static int ocfs2_force_read_journal(struct inode *inode);
61static int ocfs2_recover_node(struct ocfs2_super *osb,
Jan Kara22053632008-10-20 23:50:38 +020062 int node_num, int slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -080063static int __ocfs2_recovery_thread(void *arg);
64static int ocfs2_commit_cache(struct ocfs2_super *osb);
Jan Kara19ece542008-08-21 20:13:17 +020065static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota);
Mark Fashehccd979b2005-12-15 14:31:24 -080066static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
Sunil Mushran539d8262008-07-14 17:31:10 -070067 int dirty, int replayed);
Mark Fashehccd979b2005-12-15 14:31:24 -080068static int ocfs2_trylock_journal(struct ocfs2_super *osb,
69 int slot_num);
70static int ocfs2_recover_orphans(struct ocfs2_super *osb,
71 int slot);
72static int ocfs2_commit_thread(void *arg);
Srinivas Eeda9140db02009-03-06 14:21:46 -080073static 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);
Mark Fashehccd979b2005-12-15 14:31:24 -080078
Jan Kara19ece542008-08-21 20:13:17 +020079static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb)
80{
81 return __ocfs2_wait_on_mount(osb, 0);
82}
83
84static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb)
85{
86 return __ocfs2_wait_on_mount(osb, 1);
87}
88
Srinivas Eeda9140db02009-03-06 14:21:46 -080089/*
90 * This replay_map is to track online/offline slots, so we could recover
91 * offline slots during recovery and mount
92 */
93
94enum 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
100struct ocfs2_replay_map {
101 unsigned int rm_slots;
102 enum ocfs2_replay_state rm_state;
103 unsigned char rm_replay_slots[0];
104};
105
106void 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
118int 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
151void 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
169void 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
Joel Becker553abd02008-02-01 12:03:57 -0800180int 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 */
207static int ocfs2_recovery_thread_running(struct ocfs2_super *osb)
208{
209 mb();
210 return osb->recovery_thread_task != NULL;
211}
212
213void 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
239static 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 */
256static 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
277static 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
Mark Fashehccd979b2005-12-15 14:31:24 -0800300static int ocfs2_commit_cache(struct ocfs2_super *osb)
301{
302 int status = 0;
303 unsigned int flushed;
Mark Fashehccd979b2005-12-15 14:31:24 -0800304 struct ocfs2_journal *journal = NULL;
305
Mark Fashehccd979b2005-12-15 14:31:24 -0800306 journal = osb->journal;
307
308 /* Flush all pending commits and checkpoint the journal. */
309 down_write(&journal->j_trans_barrier);
310
Tao Mab4107952011-02-24 14:15:35 +0800311 flushed = atomic_read(&journal->j_num_trans);
312 trace_ocfs2_commit_cache_begin(flushed);
313 if (flushed == 0) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800314 up_write(&journal->j_trans_barrier);
Mark Fashehccd979b2005-12-15 14:31:24 -0800315 goto finally;
316 }
317
Joel Becker2b4e30f2008-09-03 20:03:41 -0700318 jbd2_journal_lock_updates(journal->j_journal);
319 status = jbd2_journal_flush(journal->j_journal);
320 jbd2_journal_unlock_updates(journal->j_journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800321 if (status < 0) {
322 up_write(&journal->j_trans_barrier);
323 mlog_errno(status);
324 goto finally;
325 }
326
Tao Maf9c57ad2010-08-02 11:02:13 +0800327 ocfs2_inc_trans_id(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800328
329 flushed = atomic_read(&journal->j_num_trans);
330 atomic_set(&journal->j_num_trans, 0);
331 up_write(&journal->j_trans_barrier);
332
Tao Mab4107952011-02-24 14:15:35 +0800333 trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed);
Mark Fashehccd979b2005-12-15 14:31:24 -0800334
Mark Fasheh34d024f2007-09-24 15:56:19 -0700335 ocfs2_wake_downconvert_thread(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800336 wake_up(&journal->j_checkpointed);
337finally:
Mark Fashehccd979b2005-12-15 14:31:24 -0800338 return status;
339}
340
Mark Fasheh1fabe142006-10-09 18:11:45 -0700341handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
Mark Fashehccd979b2005-12-15 14:31:24 -0800342{
Mark Fashehccd979b2005-12-15 14:31:24 -0800343 journal_t *journal = osb->journal->j_journal;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700344 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800345
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +0100346 BUG_ON(!osb || !osb->journal->j_journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800347
Mark Fasheh65eff9c2006-10-09 17:26:22 -0700348 if (ocfs2_is_hard_readonly(osb))
349 return ERR_PTR(-EROFS);
Mark Fashehccd979b2005-12-15 14:31:24 -0800350
351 BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
352 BUG_ON(max_buffs <= 0);
353
Jan Kara90e86a62008-08-27 22:30:28 +0200354 /* Nested transaction? Just return the handle... */
355 if (journal_current_handle())
356 return jbd2_journal_start(journal, max_buffs);
Mark Fashehccd979b2005-12-15 14:31:24 -0800357
Mark Fashehccd979b2005-12-15 14:31:24 -0800358 down_read(&osb->journal->j_trans_barrier);
359
Joel Becker2b4e30f2008-09-03 20:03:41 -0700360 handle = jbd2_journal_start(journal, max_buffs);
Mark Fasheh1fabe142006-10-09 18:11:45 -0700361 if (IS_ERR(handle)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800362 up_read(&osb->journal->j_trans_barrier);
363
Mark Fasheh1fabe142006-10-09 18:11:45 -0700364 mlog_errno(PTR_ERR(handle));
Mark Fashehccd979b2005-12-15 14:31:24 -0800365
366 if (is_journal_aborted(journal)) {
367 ocfs2_abort(osb->sb, "Detected aborted journal");
Mark Fasheh1fabe142006-10-09 18:11:45 -0700368 handle = ERR_PTR(-EROFS);
Mark Fashehccd979b2005-12-15 14:31:24 -0800369 }
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800370 } else {
371 if (!ocfs2_mount_local(osb))
372 atomic_inc(&(osb->journal->j_num_trans));
373 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800374
Mark Fashehccd979b2005-12-15 14:31:24 -0800375 return handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800376}
377
Mark Fasheh1fabe142006-10-09 18:11:45 -0700378int ocfs2_commit_trans(struct ocfs2_super *osb,
379 handle_t *handle)
Mark Fashehccd979b2005-12-15 14:31:24 -0800380{
Jan Kara90e86a62008-08-27 22:30:28 +0200381 int ret, nested;
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700382 struct ocfs2_journal *journal = osb->journal;
Mark Fashehccd979b2005-12-15 14:31:24 -0800383
384 BUG_ON(!handle);
385
Jan Kara90e86a62008-08-27 22:30:28 +0200386 nested = handle->h_ref > 1;
Joel Becker2b4e30f2008-09-03 20:03:41 -0700387 ret = jbd2_journal_stop(handle);
Mark Fasheh1fabe142006-10-09 18:11:45 -0700388 if (ret < 0)
389 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800390
Jan Kara90e86a62008-08-27 22:30:28 +0200391 if (!nested)
392 up_read(&journal->j_trans_barrier);
Mark Fashehccd979b2005-12-15 14:31:24 -0800393
Mark Fasheh1fabe142006-10-09 18:11:45 -0700394 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -0800395}
396
397/*
Tao Mac901fb02010-04-26 14:34:57 +0800398 * 'nblocks' is what you want to add to the current transaction.
Mark Fashehccd979b2005-12-15 14:31:24 -0800399 *
Joel Becker2b4e30f2008-09-03 20:03:41 -0700400 * This might call jbd2_journal_restart() which will commit dirty buffers
Mark Fashehe8aed342007-12-03 16:43:01 -0800401 * 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 *
Mark Fashehccd979b2005-12-15 14:31:24 -0800406 * 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 */
Mark Fasheh1fc58142006-10-05 14:15:36 -0700414int ocfs2_extend_trans(handle_t *handle, int nblocks)
Mark Fashehccd979b2005-12-15 14:31:24 -0800415{
Tao Mac901fb02010-04-26 14:34:57 +0800416 int status, old_nblocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800417
418 BUG_ON(!handle);
Tao Mac901fb02010-04-26 14:34:57 +0800419 BUG_ON(nblocks < 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800420
Tao Mac901fb02010-04-26 14:34:57 +0800421 if (!nblocks)
422 return 0;
423
424 old_nblocks = handle->h_buffer_credits;
Mark Fashehccd979b2005-12-15 14:31:24 -0800425
Tao Mab4107952011-02-24 14:15:35 +0800426 trace_ocfs2_extend_trans(old_nblocks, nblocks);
Mark Fashehccd979b2005-12-15 14:31:24 -0800427
Joel Beckere407e392008-06-12 22:35:39 -0700428#ifdef CONFIG_OCFS2_DEBUG_FS
Mark Fasheh0879c582007-12-03 16:42:19 -0800429 status = 1;
430#else
Joel Becker2b4e30f2008-09-03 20:03:41 -0700431 status = jbd2_journal_extend(handle, nblocks);
Mark Fashehccd979b2005-12-15 14:31:24 -0800432 if (status < 0) {
433 mlog_errno(status);
434 goto bail;
435 }
Mark Fasheh0879c582007-12-03 16:42:19 -0800436#endif
Mark Fashehccd979b2005-12-15 14:31:24 -0800437
438 if (status > 0) {
Tao Mab4107952011-02-24 14:15:35 +0800439 trace_ocfs2_extend_trans_restart(old_nblocks + nblocks);
Tao Mac901fb02010-04-26 14:34:57 +0800440 status = jbd2_journal_restart(handle,
441 old_nblocks + nblocks);
Mark Fashehccd979b2005-12-15 14:31:24 -0800442 if (status < 0) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800443 mlog_errno(status);
444 goto bail;
445 }
Mark Fasheh01ddf1e2006-10-05 13:54:39 -0700446 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800447
448 status = 0;
449bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800450 return status;
451}
452
Joel Becker50655ae2008-09-11 15:53:07 -0700453struct ocfs2_triggers {
454 struct jbd2_buffer_trigger_type ot_triggers;
455 int ot_offset;
456};
457
458static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers)
459{
460 return container_of(triggers, struct ocfs2_triggers, ot_triggers);
461}
462
Jan Kara13ceef02010-07-14 07:56:33 +0200463static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
Joel Becker50655ae2008-09-11 15:53:07 -0700464 struct buffer_head *bh,
465 void *data, size_t size)
466{
467 struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers);
468
469 /*
470 * We aren't guaranteed to have the superblock here, so we
471 * must unconditionally compute the ecc data.
472 * __ocfs2_journal_access() will only set the triggers if
473 * metaecc is enabled.
474 */
475 ocfs2_block_check_compute(data, size, data + ot->ot_offset);
476}
477
478/*
479 * Quota blocks have their own trigger because the struct ocfs2_block_check
480 * offset depends on the blocksize.
481 */
Jan Kara13ceef02010-07-14 07:56:33 +0200482static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
Joel Becker50655ae2008-09-11 15:53:07 -0700483 struct buffer_head *bh,
484 void *data, size_t size)
485{
486 struct ocfs2_disk_dqtrailer *dqt =
487 ocfs2_block_dqtrailer(size, data);
488
489 /*
490 * We aren't guaranteed to have the superblock here, so we
491 * must unconditionally compute the ecc data.
492 * __ocfs2_journal_access() will only set the triggers if
493 * metaecc is enabled.
494 */
495 ocfs2_block_check_compute(data, size, &dqt->dq_check);
496}
497
Joel Beckerc175a512008-12-10 17:58:22 -0800498/*
499 * Directory blocks also have their own trigger because the
500 * struct ocfs2_block_check offset depends on the blocksize.
501 */
Jan Kara13ceef02010-07-14 07:56:33 +0200502static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
Joel Beckerc175a512008-12-10 17:58:22 -0800503 struct buffer_head *bh,
504 void *data, size_t size)
505{
506 struct ocfs2_dir_block_trailer *trailer =
507 ocfs2_dir_trailer_from_size(size, data);
508
509 /*
510 * We aren't guaranteed to have the superblock here, so we
511 * must unconditionally compute the ecc data.
512 * __ocfs2_journal_access() will only set the triggers if
513 * metaecc is enabled.
514 */
515 ocfs2_block_check_compute(data, size, &trailer->db_check);
516}
517
Joel Becker50655ae2008-09-11 15:53:07 -0700518static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers,
519 struct buffer_head *bh)
520{
521 mlog(ML_ERROR,
522 "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, "
523 "bh->b_blocknr = %llu\n",
524 (unsigned long)bh,
525 (unsigned long long)bh->b_blocknr);
526
527 /* We aren't guaranteed to have the superblock here - but if we
528 * don't, it'll just crash. */
529 ocfs2_error(bh->b_assoc_map->host->i_sb,
530 "JBD2 has aborted our journal, ocfs2 cannot continue\n");
531}
532
533static struct ocfs2_triggers di_triggers = {
534 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200535 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700536 .t_abort = ocfs2_abort_trigger,
537 },
538 .ot_offset = offsetof(struct ocfs2_dinode, i_check),
539};
540
541static struct ocfs2_triggers eb_triggers = {
542 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200543 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700544 .t_abort = ocfs2_abort_trigger,
545 },
546 .ot_offset = offsetof(struct ocfs2_extent_block, h_check),
547};
548
Tao Ma93c97082009-08-18 11:19:20 +0800549static struct ocfs2_triggers rb_triggers = {
550 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200551 .t_frozen = ocfs2_frozen_trigger,
Tao Ma93c97082009-08-18 11:19:20 +0800552 .t_abort = ocfs2_abort_trigger,
553 },
554 .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check),
555};
556
Joel Becker50655ae2008-09-11 15:53:07 -0700557static struct ocfs2_triggers gd_triggers = {
558 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200559 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700560 .t_abort = ocfs2_abort_trigger,
561 },
562 .ot_offset = offsetof(struct ocfs2_group_desc, bg_check),
563};
564
Joel Beckerc175a512008-12-10 17:58:22 -0800565static struct ocfs2_triggers db_triggers = {
566 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200567 .t_frozen = ocfs2_db_frozen_trigger,
Joel Beckerc175a512008-12-10 17:58:22 -0800568 .t_abort = ocfs2_abort_trigger,
569 },
570};
571
Joel Becker50655ae2008-09-11 15:53:07 -0700572static struct ocfs2_triggers xb_triggers = {
573 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200574 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700575 .t_abort = ocfs2_abort_trigger,
576 },
577 .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check),
578};
579
580static struct ocfs2_triggers dq_triggers = {
581 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200582 .t_frozen = ocfs2_dq_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700583 .t_abort = ocfs2_abort_trigger,
584 },
585};
586
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800587static struct ocfs2_triggers dr_triggers = {
588 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200589 .t_frozen = ocfs2_frozen_trigger,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800590 .t_abort = ocfs2_abort_trigger,
591 },
592 .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check),
593};
594
595static struct ocfs2_triggers dl_triggers = {
596 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200597 .t_frozen = ocfs2_frozen_trigger,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800598 .t_abort = ocfs2_abort_trigger,
599 },
600 .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check),
601};
602
Joel Becker50655ae2008-09-11 15:53:07 -0700603static int __ocfs2_journal_access(handle_t *handle,
Joel Becker0cf2f762009-02-12 16:41:25 -0800604 struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700605 struct buffer_head *bh,
606 struct ocfs2_triggers *triggers,
607 int type)
Mark Fashehccd979b2005-12-15 14:31:24 -0800608{
609 int status;
Joel Becker0cf2f762009-02-12 16:41:25 -0800610 struct ocfs2_super *osb =
611 OCFS2_SB(ocfs2_metadata_cache_get_super(ci));
Mark Fashehccd979b2005-12-15 14:31:24 -0800612
Joel Becker0cf2f762009-02-12 16:41:25 -0800613 BUG_ON(!ci || !ci->ci_ops);
Mark Fashehccd979b2005-12-15 14:31:24 -0800614 BUG_ON(!handle);
615 BUG_ON(!bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800616
Tao Mab4107952011-02-24 14:15:35 +0800617 trace_ocfs2_journal_access(
618 (unsigned long long)ocfs2_metadata_cache_owner(ci),
619 (unsigned long long)bh->b_blocknr, type, bh->b_size);
Mark Fashehccd979b2005-12-15 14:31:24 -0800620
621 /* we can safely remove this assertion after testing. */
622 if (!buffer_uptodate(bh)) {
623 mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n");
624 mlog(ML_ERROR, "b_blocknr=%llu\n",
625 (unsigned long long)bh->b_blocknr);
626 BUG();
627 }
628
Joel Becker0cf2f762009-02-12 16:41:25 -0800629 /* Set the current transaction information on the ci so
Mark Fashehccd979b2005-12-15 14:31:24 -0800630 * that the locking code knows whether it can drop it's locks
Joel Becker0cf2f762009-02-12 16:41:25 -0800631 * on this ci or not. We're protected from the commit
Mark Fashehccd979b2005-12-15 14:31:24 -0800632 * thread updating the current transaction id until
633 * ocfs2_commit_trans() because ocfs2_start_trans() took
634 * j_trans_barrier for us. */
Joel Becker0cf2f762009-02-12 16:41:25 -0800635 ocfs2_set_ci_lock_trans(osb->journal, ci);
Mark Fashehccd979b2005-12-15 14:31:24 -0800636
Joel Becker0cf2f762009-02-12 16:41:25 -0800637 ocfs2_metadata_cache_io_lock(ci);
Mark Fashehccd979b2005-12-15 14:31:24 -0800638 switch (type) {
639 case OCFS2_JOURNAL_ACCESS_CREATE:
640 case OCFS2_JOURNAL_ACCESS_WRITE:
Joel Becker2b4e30f2008-09-03 20:03:41 -0700641 status = jbd2_journal_get_write_access(handle, bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800642 break;
643
644 case OCFS2_JOURNAL_ACCESS_UNDO:
Joel Becker2b4e30f2008-09-03 20:03:41 -0700645 status = jbd2_journal_get_undo_access(handle, bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800646 break;
647
648 default:
649 status = -EINVAL;
André Goddard Rosaaf901ca2009-11-14 13:09:05 -0200650 mlog(ML_ERROR, "Unknown access type!\n");
Mark Fashehccd979b2005-12-15 14:31:24 -0800651 }
Joel Becker0cf2f762009-02-12 16:41:25 -0800652 if (!status && ocfs2_meta_ecc(osb) && triggers)
Joel Becker50655ae2008-09-11 15:53:07 -0700653 jbd2_journal_set_triggers(bh, &triggers->ot_triggers);
Joel Becker0cf2f762009-02-12 16:41:25 -0800654 ocfs2_metadata_cache_io_unlock(ci);
Mark Fashehccd979b2005-12-15 14:31:24 -0800655
656 if (status < 0)
657 mlog(ML_ERROR, "Error %d getting %d access to buffer!\n",
658 status, type);
659
Mark Fashehccd979b2005-12-15 14:31:24 -0800660 return status;
661}
662
Joel Becker0cf2f762009-02-12 16:41:25 -0800663int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700664 struct buffer_head *bh, int type)
665{
Joel Becker0cf2f762009-02-12 16:41:25 -0800666 return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700667}
668
Joel Becker0cf2f762009-02-12 16:41:25 -0800669int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700670 struct buffer_head *bh, int type)
671{
Joel Becker0cf2f762009-02-12 16:41:25 -0800672 return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700673}
674
Tao Ma93c97082009-08-18 11:19:20 +0800675int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci,
676 struct buffer_head *bh, int type)
677{
678 return __ocfs2_journal_access(handle, ci, bh, &rb_triggers,
679 type);
680}
681
Joel Becker0cf2f762009-02-12 16:41:25 -0800682int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700683 struct buffer_head *bh, int type)
684{
Joel Becker0cf2f762009-02-12 16:41:25 -0800685 return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700686}
687
Joel Becker0cf2f762009-02-12 16:41:25 -0800688int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700689 struct buffer_head *bh, int type)
690{
Joel Becker0cf2f762009-02-12 16:41:25 -0800691 return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700692}
693
Joel Becker0cf2f762009-02-12 16:41:25 -0800694int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700695 struct buffer_head *bh, int type)
696{
Joel Becker0cf2f762009-02-12 16:41:25 -0800697 return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700698}
699
Joel Becker0cf2f762009-02-12 16:41:25 -0800700int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800701 struct buffer_head *bh, int type)
702{
Joel Becker0cf2f762009-02-12 16:41:25 -0800703 return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type);
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800704}
705
Joel Becker0cf2f762009-02-12 16:41:25 -0800706int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800707 struct buffer_head *bh, int type)
708{
Joel Becker0cf2f762009-02-12 16:41:25 -0800709 return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type);
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800710}
711
Joel Becker0cf2f762009-02-12 16:41:25 -0800712int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci,
713 struct buffer_head *bh, int type)
714{
715 return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type);
716}
717
718int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700719 struct buffer_head *bh, int type)
720{
Joel Becker0cf2f762009-02-12 16:41:25 -0800721 return __ocfs2_journal_access(handle, ci, bh, NULL, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700722}
723
Joel Beckerec20cec2010-03-19 14:13:52 -0700724void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh)
Mark Fashehccd979b2005-12-15 14:31:24 -0800725{
726 int status;
727
Tao Mab4107952011-02-24 14:15:35 +0800728 trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr);
Mark Fashehccd979b2005-12-15 14:31:24 -0800729
Joel Becker2b4e30f2008-09-03 20:03:41 -0700730 status = jbd2_journal_dirty_metadata(handle, bh);
Joel Beckerec20cec2010-03-19 14:13:52 -0700731 BUG_ON(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800732}
733
Joel Becker2b4e30f2008-09-03 20:03:41 -0700734#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE)
Mark Fashehccd979b2005-12-15 14:31:24 -0800735
736void ocfs2_set_journal_params(struct ocfs2_super *osb)
737{
738 journal_t *journal = osb->journal->j_journal;
Mark Fashehd147b3d2007-11-07 14:40:36 -0800739 unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL;
740
741 if (osb->osb_commit_interval)
742 commit_interval = osb->osb_commit_interval;
Mark Fashehccd979b2005-12-15 14:31:24 -0800743
Theodore Ts'oa931da62010-08-03 21:35:12 -0400744 write_lock(&journal->j_state_lock);
Mark Fashehd147b3d2007-11-07 14:40:36 -0800745 journal->j_commit_interval = commit_interval;
Mark Fashehccd979b2005-12-15 14:31:24 -0800746 if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER)
Joel Becker2b4e30f2008-09-03 20:03:41 -0700747 journal->j_flags |= JBD2_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -0800748 else
Joel Becker2b4e30f2008-09-03 20:03:41 -0700749 journal->j_flags &= ~JBD2_BARRIER;
Theodore Ts'oa931da62010-08-03 21:35:12 -0400750 write_unlock(&journal->j_state_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -0800751}
752
753int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
754{
755 int status = -1;
756 struct inode *inode = NULL; /* the journal inode */
757 journal_t *j_journal = NULL;
758 struct ocfs2_dinode *di = NULL;
759 struct buffer_head *bh = NULL;
760 struct ocfs2_super *osb;
Mark Fashehe63aecb62007-10-18 15:30:42 -0700761 int inode_lock = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800762
Mark Fashehccd979b2005-12-15 14:31:24 -0800763 BUG_ON(!journal);
764
765 osb = journal->j_osb;
766
767 /* already have the inode for our journal */
768 inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
769 osb->slot_num);
770 if (inode == NULL) {
771 status = -EACCES;
772 mlog_errno(status);
773 goto done;
774 }
775 if (is_bad_inode(inode)) {
776 mlog(ML_ERROR, "access error (bad inode)\n");
777 iput(inode);
778 inode = NULL;
779 status = -EACCES;
780 goto done;
781 }
782
783 SET_INODE_JOURNAL(inode);
784 OCFS2_I(inode)->ip_open_count++;
785
Mark Fasheh6eff5792006-01-18 10:31:47 -0800786 /* Skip recovery waits here - journal inode metadata never
787 * changes in a live cluster so it can be considered an
788 * exception to the rule. */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700789 status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
Mark Fashehccd979b2005-12-15 14:31:24 -0800790 if (status < 0) {
791 if (status != -ERESTARTSYS)
792 mlog(ML_ERROR, "Could not get lock on journal!\n");
793 goto done;
794 }
795
Mark Fashehe63aecb62007-10-18 15:30:42 -0700796 inode_lock = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800797 di = (struct ocfs2_dinode *)bh->b_data;
798
799 if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) {
800 mlog(ML_ERROR, "Journal file size (%lld) is too small!\n",
801 inode->i_size);
802 status = -EINVAL;
803 goto done;
804 }
805
Tao Mab4107952011-02-24 14:15:35 +0800806 trace_ocfs2_journal_init(inode->i_size,
807 (unsigned long long)inode->i_blocks,
808 OCFS2_I(inode)->ip_clusters);
Mark Fashehccd979b2005-12-15 14:31:24 -0800809
810 /* call the kernels journal init function now */
Joel Becker2b4e30f2008-09-03 20:03:41 -0700811 j_journal = jbd2_journal_init_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800812 if (j_journal == NULL) {
813 mlog(ML_ERROR, "Linux journal layer error\n");
814 status = -EINVAL;
815 goto done;
816 }
817
Tao Mab4107952011-02-24 14:15:35 +0800818 trace_ocfs2_journal_init_maxlen(j_journal->j_maxlen);
Mark Fashehccd979b2005-12-15 14:31:24 -0800819
820 *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) &
821 OCFS2_JOURNAL_DIRTY_FL);
822
823 journal->j_journal = j_journal;
824 journal->j_inode = inode;
825 journal->j_bh = bh;
826
827 ocfs2_set_journal_params(osb);
828
829 journal->j_state = OCFS2_JOURNAL_LOADED;
830
831 status = 0;
832done:
833 if (status < 0) {
Mark Fashehe63aecb62007-10-18 15:30:42 -0700834 if (inode_lock)
835 ocfs2_inode_unlock(inode, 1);
Mark Fasheha81cb882008-10-07 14:25:16 -0700836 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800837 if (inode) {
838 OCFS2_I(inode)->ip_open_count--;
839 iput(inode);
840 }
841 }
842
Mark Fashehccd979b2005-12-15 14:31:24 -0800843 return status;
844}
845
Sunil Mushran539d8262008-07-14 17:31:10 -0700846static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di)
847{
848 le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1);
849}
850
851static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di)
852{
853 return le32_to_cpu(di->id1.journal1.ij_recovery_generation);
854}
855
Mark Fashehccd979b2005-12-15 14:31:24 -0800856static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
Sunil Mushran539d8262008-07-14 17:31:10 -0700857 int dirty, int replayed)
Mark Fashehccd979b2005-12-15 14:31:24 -0800858{
859 int status;
860 unsigned int flags;
861 struct ocfs2_journal *journal = osb->journal;
862 struct buffer_head *bh = journal->j_bh;
863 struct ocfs2_dinode *fe;
864
Mark Fashehccd979b2005-12-15 14:31:24 -0800865 fe = (struct ocfs2_dinode *)bh->b_data;
Joel Becker10995aa2008-11-13 14:49:12 -0800866
867 /* The journal bh on the osb always comes from ocfs2_journal_init()
868 * and was validated there inside ocfs2_inode_lock_full(). It's a
869 * code bug if we mess it up. */
870 BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
Mark Fashehccd979b2005-12-15 14:31:24 -0800871
872 flags = le32_to_cpu(fe->id1.journal1.ij_flags);
873 if (dirty)
874 flags |= OCFS2_JOURNAL_DIRTY_FL;
875 else
876 flags &= ~OCFS2_JOURNAL_DIRTY_FL;
877 fe->id1.journal1.ij_flags = cpu_to_le32(flags);
878
Sunil Mushran539d8262008-07-14 17:31:10 -0700879 if (replayed)
880 ocfs2_bump_recovery_generation(fe);
881
Joel Becker13723d02008-10-17 19:25:01 -0700882 ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
Joel Becker8cb471e2009-02-10 20:00:41 -0800883 status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode));
Mark Fashehccd979b2005-12-15 14:31:24 -0800884 if (status < 0)
885 mlog_errno(status);
886
Mark Fashehccd979b2005-12-15 14:31:24 -0800887 return status;
888}
889
890/*
891 * If the journal has been kmalloc'd it needs to be freed after this
892 * call.
893 */
894void ocfs2_journal_shutdown(struct ocfs2_super *osb)
895{
896 struct ocfs2_journal *journal = NULL;
897 int status = 0;
898 struct inode *inode = NULL;
899 int num_running_trans = 0;
900
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +0100901 BUG_ON(!osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800902
903 journal = osb->journal;
904 if (!journal)
905 goto done;
906
907 inode = journal->j_inode;
908
909 if (journal->j_state != OCFS2_JOURNAL_LOADED)
910 goto done;
911
Joel Becker2b4e30f2008-09-03 20:03:41 -0700912 /* need to inc inode use count - jbd2_journal_destroy will iput. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800913 if (!igrab(inode))
914 BUG();
915
916 num_running_trans = atomic_read(&(osb->journal->j_num_trans));
Tao Mab4107952011-02-24 14:15:35 +0800917 trace_ocfs2_journal_shutdown(num_running_trans);
Mark Fashehccd979b2005-12-15 14:31:24 -0800918
919 /* Do a commit_cache here. It will flush our journal, *and*
920 * release any locks that are still held.
921 * set the SHUTDOWN flag and release the trans lock.
922 * the commit thread will take the trans lock for us below. */
923 journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN;
924
925 /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not
926 * drop the trans_lock (which we want to hold until we
927 * completely destroy the journal. */
928 if (osb->commit_task) {
929 /* Wait for the commit thread */
Tao Mab4107952011-02-24 14:15:35 +0800930 trace_ocfs2_journal_shutdown_wait(osb->commit_task);
Mark Fashehccd979b2005-12-15 14:31:24 -0800931 kthread_stop(osb->commit_task);
932 osb->commit_task = NULL;
933 }
934
935 BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0);
936
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800937 if (ocfs2_mount_local(osb)) {
Joel Becker2b4e30f2008-09-03 20:03:41 -0700938 jbd2_journal_lock_updates(journal->j_journal);
939 status = jbd2_journal_flush(journal->j_journal);
940 jbd2_journal_unlock_updates(journal->j_journal);
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800941 if (status < 0)
942 mlog_errno(status);
943 }
944
945 if (status == 0) {
946 /*
947 * Do not toggle if flush was unsuccessful otherwise
948 * will leave dirty metadata in a "clean" journal
949 */
Sunil Mushran539d8262008-07-14 17:31:10 -0700950 status = ocfs2_journal_toggle_dirty(osb, 0, 0);
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800951 if (status < 0)
952 mlog_errno(status);
953 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800954
955 /* Shutdown the kernel journal system */
Joel Becker2b4e30f2008-09-03 20:03:41 -0700956 jbd2_journal_destroy(journal->j_journal);
Sunil Mushranae0dff62008-10-22 13:24:29 -0700957 journal->j_journal = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800958
959 OCFS2_I(inode)->ip_open_count--;
960
961 /* unlock our journal */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700962 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800963
964 brelse(journal->j_bh);
965 journal->j_bh = NULL;
966
967 journal->j_state = OCFS2_JOURNAL_FREE;
968
969// up_write(&journal->j_trans_barrier);
970done:
971 if (inode)
972 iput(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800973}
974
975static void ocfs2_clear_journal_error(struct super_block *sb,
976 journal_t *journal,
977 int slot)
978{
979 int olderr;
980
Joel Becker2b4e30f2008-09-03 20:03:41 -0700981 olderr = jbd2_journal_errno(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800982 if (olderr) {
983 mlog(ML_ERROR, "File system error %d recorded in "
984 "journal %u.\n", olderr, slot);
985 mlog(ML_ERROR, "File system on device %s needs checking.\n",
986 sb->s_id);
987
Joel Becker2b4e30f2008-09-03 20:03:41 -0700988 jbd2_journal_ack_err(journal);
989 jbd2_journal_clear_err(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800990 }
991}
992
Sunil Mushran539d8262008-07-14 17:31:10 -0700993int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed)
Mark Fashehccd979b2005-12-15 14:31:24 -0800994{
995 int status = 0;
996 struct ocfs2_super *osb;
997
Julia Lawallb1f35502008-03-04 15:21:05 -0800998 BUG_ON(!journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800999
1000 osb = journal->j_osb;
1001
Joel Becker2b4e30f2008-09-03 20:03:41 -07001002 status = jbd2_journal_load(journal->j_journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001003 if (status < 0) {
1004 mlog(ML_ERROR, "Failed to load journal!\n");
1005 goto done;
1006 }
1007
1008 ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num);
1009
Sunil Mushran539d8262008-07-14 17:31:10 -07001010 status = ocfs2_journal_toggle_dirty(osb, 1, replayed);
Mark Fashehccd979b2005-12-15 14:31:24 -08001011 if (status < 0) {
1012 mlog_errno(status);
1013 goto done;
1014 }
1015
1016 /* Launch the commit thread */
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001017 if (!local) {
1018 osb->commit_task = kthread_run(ocfs2_commit_thread, osb,
1019 "ocfs2cmt");
1020 if (IS_ERR(osb->commit_task)) {
1021 status = PTR_ERR(osb->commit_task);
1022 osb->commit_task = NULL;
1023 mlog(ML_ERROR, "unable to launch ocfs2commit thread, "
1024 "error=%d", status);
1025 goto done;
1026 }
1027 } else
Mark Fashehccd979b2005-12-15 14:31:24 -08001028 osb->commit_task = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001029
1030done:
Mark Fashehccd979b2005-12-15 14:31:24 -08001031 return status;
1032}
1033
1034
1035/* 'full' flag tells us whether we clear out all blocks or if we just
1036 * mark the journal clean */
1037int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full)
1038{
1039 int status;
1040
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +01001041 BUG_ON(!journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001042
Joel Becker2b4e30f2008-09-03 20:03:41 -07001043 status = jbd2_journal_wipe(journal->j_journal, full);
Mark Fashehccd979b2005-12-15 14:31:24 -08001044 if (status < 0) {
1045 mlog_errno(status);
1046 goto bail;
1047 }
1048
Sunil Mushran539d8262008-07-14 17:31:10 -07001049 status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001050 if (status < 0)
1051 mlog_errno(status);
1052
1053bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001054 return status;
1055}
1056
Joel Becker553abd02008-02-01 12:03:57 -08001057static int ocfs2_recovery_completed(struct ocfs2_super *osb)
1058{
1059 int empty;
1060 struct ocfs2_recovery_map *rm = osb->recovery_map;
1061
1062 spin_lock(&osb->osb_lock);
1063 empty = (rm->rm_used == 0);
1064 spin_unlock(&osb->osb_lock);
1065
1066 return empty;
1067}
1068
1069void ocfs2_wait_for_recovery(struct ocfs2_super *osb)
1070{
1071 wait_event(osb->recovery_event, ocfs2_recovery_completed(osb));
1072}
1073
Mark Fashehccd979b2005-12-15 14:31:24 -08001074/*
1075 * JBD Might read a cached version of another nodes journal file. We
1076 * don't want this as this file changes often and we get no
1077 * notification on those changes. The only way to be sure that we've
1078 * got the most up to date version of those blocks then is to force
1079 * read them off disk. Just searching through the buffer cache won't
1080 * work as there may be pages backing this file which are still marked
1081 * up to date. We know things can't change on this file underneath us
1082 * as we have the lock by now :)
1083 */
1084static int ocfs2_force_read_journal(struct inode *inode)
1085{
1086 int status = 0;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001087 int i;
Mark Fasheh8110b072007-03-22 16:53:23 -07001088 u64 v_blkno, p_blkno, p_blocks, num_blocks;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001089#define CONCURRENT_JOURNAL_FILL 32ULL
Mark Fashehccd979b2005-12-15 14:31:24 -08001090 struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL];
1091
Mark Fashehccd979b2005-12-15 14:31:24 -08001092 memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL);
1093
Mark Fasheh8110b072007-03-22 16:53:23 -07001094 num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, inode->i_size);
Mark Fashehccd979b2005-12-15 14:31:24 -08001095 v_blkno = 0;
Mark Fasheh8110b072007-03-22 16:53:23 -07001096 while (v_blkno < num_blocks) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001097 status = ocfs2_extent_map_get_blocks(inode, v_blkno,
Mark Fasheh49cb8d22007-03-09 16:21:46 -08001098 &p_blkno, &p_blocks, NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001099 if (status < 0) {
1100 mlog_errno(status);
1101 goto bail;
1102 }
1103
1104 if (p_blocks > CONCURRENT_JOURNAL_FILL)
1105 p_blocks = CONCURRENT_JOURNAL_FILL;
1106
Mark Fashehdd4a2c22006-04-12 14:24:05 -07001107 /* We are reading journal data which should not
1108 * be put in the uptodate cache */
Joel Beckerda1e9092008-10-09 17:20:29 -07001109 status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb),
1110 p_blkno, p_blocks, bhs);
Mark Fashehccd979b2005-12-15 14:31:24 -08001111 if (status < 0) {
1112 mlog_errno(status);
1113 goto bail;
1114 }
1115
1116 for(i = 0; i < p_blocks; i++) {
1117 brelse(bhs[i]);
1118 bhs[i] = NULL;
1119 }
1120
1121 v_blkno += p_blocks;
1122 }
1123
1124bail:
1125 for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++)
Mark Fasheha81cb882008-10-07 14:25:16 -07001126 brelse(bhs[i]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001127 return status;
1128}
1129
1130struct ocfs2_la_recovery_item {
1131 struct list_head lri_list;
1132 int lri_slot;
1133 struct ocfs2_dinode *lri_la_dinode;
1134 struct ocfs2_dinode *lri_tl_dinode;
Jan Kara22053632008-10-20 23:50:38 +02001135 struct ocfs2_quota_recovery *lri_qrec;
Mark Fashehccd979b2005-12-15 14:31:24 -08001136};
1137
1138/* Does the second half of the recovery process. By this point, the
1139 * node is marked clean and can actually be considered recovered,
1140 * hence it's no longer in the recovery map, but there's still some
1141 * cleanup we can do which shouldn't happen within the recovery thread
1142 * as locking in that context becomes very difficult if we are to take
1143 * recovering nodes into account.
1144 *
1145 * NOTE: This function can and will sleep on recovery of other nodes
1146 * during cluster locking, just like any other ocfs2 process.
1147 */
David Howellsc4028952006-11-22 14:57:56 +00001148void ocfs2_complete_recovery(struct work_struct *work)
Mark Fashehccd979b2005-12-15 14:31:24 -08001149{
Tao Mab4107952011-02-24 14:15:35 +08001150 int ret = 0;
David Howellsc4028952006-11-22 14:57:56 +00001151 struct ocfs2_journal *journal =
1152 container_of(work, struct ocfs2_journal, j_recovery_work);
1153 struct ocfs2_super *osb = journal->j_osb;
Mark Fashehccd979b2005-12-15 14:31:24 -08001154 struct ocfs2_dinode *la_dinode, *tl_dinode;
Christoph Hellwig800deef2007-05-17 16:03:13 +02001155 struct ocfs2_la_recovery_item *item, *n;
Jan Kara22053632008-10-20 23:50:38 +02001156 struct ocfs2_quota_recovery *qrec;
Mark Fashehccd979b2005-12-15 14:31:24 -08001157 LIST_HEAD(tmp_la_list);
1158
Tao Mab4107952011-02-24 14:15:35 +08001159 trace_ocfs2_complete_recovery(
1160 (unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001161
1162 spin_lock(&journal->j_lock);
1163 list_splice_init(&journal->j_la_cleanups, &tmp_la_list);
1164 spin_unlock(&journal->j_lock);
1165
Christoph Hellwig800deef2007-05-17 16:03:13 +02001166 list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001167 list_del_init(&item->lri_list);
1168
Jan Kara19ece542008-08-21 20:13:17 +02001169 ocfs2_wait_on_quotas(osb);
1170
Mark Fashehccd979b2005-12-15 14:31:24 -08001171 la_dinode = item->lri_la_dinode;
Tao Mab4107952011-02-24 14:15:35 +08001172 tl_dinode = item->lri_tl_dinode;
1173 qrec = item->lri_qrec;
Mark Fashehccd979b2005-12-15 14:31:24 -08001174
Tao Mab4107952011-02-24 14:15:35 +08001175 trace_ocfs2_complete_recovery_slot(item->lri_slot,
1176 la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0,
1177 tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0,
1178 qrec);
1179
1180 if (la_dinode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001181 ret = ocfs2_complete_local_alloc_recovery(osb,
1182 la_dinode);
1183 if (ret < 0)
1184 mlog_errno(ret);
1185
1186 kfree(la_dinode);
1187 }
1188
Mark Fashehccd979b2005-12-15 14:31:24 -08001189 if (tl_dinode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001190 ret = ocfs2_complete_truncate_log_recovery(osb,
1191 tl_dinode);
1192 if (ret < 0)
1193 mlog_errno(ret);
1194
1195 kfree(tl_dinode);
1196 }
1197
1198 ret = ocfs2_recover_orphans(osb, item->lri_slot);
1199 if (ret < 0)
1200 mlog_errno(ret);
1201
Jan Kara22053632008-10-20 23:50:38 +02001202 if (qrec) {
Jan Kara22053632008-10-20 23:50:38 +02001203 ret = ocfs2_finish_quota_recovery(osb, qrec,
1204 item->lri_slot);
1205 if (ret < 0)
1206 mlog_errno(ret);
1207 /* Recovery info is already freed now */
1208 }
1209
Mark Fashehccd979b2005-12-15 14:31:24 -08001210 kfree(item);
1211 }
1212
Tao Mab4107952011-02-24 14:15:35 +08001213 trace_ocfs2_complete_recovery_end(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -08001214}
1215
1216/* NOTE: This function always eats your references to la_dinode and
1217 * tl_dinode, either manually on error, or by passing them to
1218 * ocfs2_complete_recovery */
1219static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
1220 int slot_num,
1221 struct ocfs2_dinode *la_dinode,
Jan Kara22053632008-10-20 23:50:38 +02001222 struct ocfs2_dinode *tl_dinode,
1223 struct ocfs2_quota_recovery *qrec)
Mark Fashehccd979b2005-12-15 14:31:24 -08001224{
1225 struct ocfs2_la_recovery_item *item;
1226
Sunil Mushranafae00ab2006-04-12 14:37:00 -07001227 item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS);
Mark Fashehccd979b2005-12-15 14:31:24 -08001228 if (!item) {
1229 /* Though we wish to avoid it, we are in fact safe in
1230 * skipping local alloc cleanup as fsck.ocfs2 is more
1231 * than capable of reclaiming unused space. */
1232 if (la_dinode)
1233 kfree(la_dinode);
1234
1235 if (tl_dinode)
1236 kfree(tl_dinode);
1237
Jan Kara22053632008-10-20 23:50:38 +02001238 if (qrec)
1239 ocfs2_free_quota_recovery(qrec);
1240
Mark Fashehccd979b2005-12-15 14:31:24 -08001241 mlog_errno(-ENOMEM);
1242 return;
1243 }
1244
1245 INIT_LIST_HEAD(&item->lri_list);
1246 item->lri_la_dinode = la_dinode;
1247 item->lri_slot = slot_num;
1248 item->lri_tl_dinode = tl_dinode;
Jan Kara22053632008-10-20 23:50:38 +02001249 item->lri_qrec = qrec;
Mark Fashehccd979b2005-12-15 14:31:24 -08001250
1251 spin_lock(&journal->j_lock);
1252 list_add_tail(&item->lri_list, &journal->j_la_cleanups);
1253 queue_work(ocfs2_wq, &journal->j_recovery_work);
1254 spin_unlock(&journal->j_lock);
1255}
1256
1257/* Called by the mount code to queue recovery the last part of
Srinivas Eeda9140db02009-03-06 14:21:46 -08001258 * recovery for it's own and offline slot(s). */
Mark Fashehccd979b2005-12-15 14:31:24 -08001259void ocfs2_complete_mount_recovery(struct ocfs2_super *osb)
1260{
1261 struct ocfs2_journal *journal = osb->journal;
1262
Sunil Mushran10b3dd72011-05-04 10:28:02 -07001263 if (ocfs2_is_hard_readonly(osb))
1264 return;
1265
Srinivas Eeda9140db02009-03-06 14:21:46 -08001266 /* No need to queue up our truncate_log as regular cleanup will catch
1267 * that */
1268 ocfs2_queue_recovery_completion(journal, osb->slot_num,
1269 osb->local_alloc_copy, NULL, NULL);
1270 ocfs2_schedule_truncate_log_flush(osb, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001271
Srinivas Eeda9140db02009-03-06 14:21:46 -08001272 osb->local_alloc_copy = NULL;
1273 osb->dirty = 0;
1274
1275 /* queue to recover orphan slots for all offline slots */
1276 ocfs2_replay_map_set_state(osb, REPLAY_NEEDED);
1277 ocfs2_queue_replay_slots(osb);
1278 ocfs2_free_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001279}
1280
Jan Kara22053632008-10-20 23:50:38 +02001281void ocfs2_complete_quota_recovery(struct ocfs2_super *osb)
1282{
1283 if (osb->quota_rec) {
1284 ocfs2_queue_recovery_completion(osb->journal,
1285 osb->slot_num,
1286 NULL,
1287 NULL,
1288 osb->quota_rec);
1289 osb->quota_rec = NULL;
1290 }
1291}
1292
Mark Fashehccd979b2005-12-15 14:31:24 -08001293static int __ocfs2_recovery_thread(void *arg)
1294{
Jan Kara22053632008-10-20 23:50:38 +02001295 int status, node_num, slot_num;
Mark Fashehccd979b2005-12-15 14:31:24 -08001296 struct ocfs2_super *osb = arg;
Joel Becker553abd02008-02-01 12:03:57 -08001297 struct ocfs2_recovery_map *rm = osb->recovery_map;
Jan Kara22053632008-10-20 23:50:38 +02001298 int *rm_quota = NULL;
1299 int rm_quota_used = 0, i;
1300 struct ocfs2_quota_recovery *qrec;
Mark Fashehccd979b2005-12-15 14:31:24 -08001301
Mark Fashehccd979b2005-12-15 14:31:24 -08001302 status = ocfs2_wait_on_mount(osb);
1303 if (status < 0) {
1304 goto bail;
1305 }
1306
Jan Kara22053632008-10-20 23:50:38 +02001307 rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS);
1308 if (!rm_quota) {
1309 status = -ENOMEM;
1310 goto bail;
1311 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001312restart:
1313 status = ocfs2_super_lock(osb, 1);
1314 if (status < 0) {
1315 mlog_errno(status);
1316 goto bail;
1317 }
1318
Srinivas Eeda9140db02009-03-06 14:21:46 -08001319 status = ocfs2_compute_replay_slots(osb);
1320 if (status < 0)
1321 mlog_errno(status);
1322
1323 /* queue recovery for our own slot */
1324 ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL,
1325 NULL, NULL);
1326
Joel Becker553abd02008-02-01 12:03:57 -08001327 spin_lock(&osb->osb_lock);
1328 while (rm->rm_used) {
1329 /* It's always safe to remove entry zero, as we won't
1330 * clear it until ocfs2_recover_node() has succeeded. */
1331 node_num = rm->rm_entries[0];
1332 spin_unlock(&osb->osb_lock);
Jan Kara22053632008-10-20 23:50:38 +02001333 slot_num = ocfs2_node_num_to_slot(osb, node_num);
Tao Mab4107952011-02-24 14:15:35 +08001334 trace_ocfs2_recovery_thread_node(node_num, slot_num);
Jan Kara22053632008-10-20 23:50:38 +02001335 if (slot_num == -ENOENT) {
1336 status = 0;
Jan Kara22053632008-10-20 23:50:38 +02001337 goto skip_recovery;
1338 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001339
Jan Kara22053632008-10-20 23:50:38 +02001340 /* It is a bit subtle with quota recovery. We cannot do it
1341 * immediately because we have to obtain cluster locks from
1342 * quota files and we also don't want to just skip it because
1343 * then quota usage would be out of sync until some node takes
1344 * the slot. So we remember which nodes need quota recovery
1345 * and when everything else is done, we recover quotas. */
1346 for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++);
1347 if (i == rm_quota_used)
1348 rm_quota[rm_quota_used++] = slot_num;
1349
1350 status = ocfs2_recover_node(osb, node_num, slot_num);
1351skip_recovery:
Joel Becker553abd02008-02-01 12:03:57 -08001352 if (!status) {
1353 ocfs2_recovery_map_clear(osb, node_num);
1354 } else {
Mark Fashehccd979b2005-12-15 14:31:24 -08001355 mlog(ML_ERROR,
1356 "Error %d recovering node %d on device (%u,%u)!\n",
1357 status, node_num,
1358 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
1359 mlog(ML_ERROR, "Volume requires unmount.\n");
Mark Fashehccd979b2005-12-15 14:31:24 -08001360 }
1361
Joel Becker553abd02008-02-01 12:03:57 -08001362 spin_lock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001363 }
Joel Becker553abd02008-02-01 12:03:57 -08001364 spin_unlock(&osb->osb_lock);
Tao Mab4107952011-02-24 14:15:35 +08001365 trace_ocfs2_recovery_thread_end(status);
Joel Becker553abd02008-02-01 12:03:57 -08001366
Sunil Mushran539d8262008-07-14 17:31:10 -07001367 /* Refresh all journal recovery generations from disk */
1368 status = ocfs2_check_journals_nolocks(osb);
1369 status = (status == -EROFS) ? 0 : status;
1370 if (status < 0)
1371 mlog_errno(status);
1372
Jan Kara22053632008-10-20 23:50:38 +02001373 /* Now it is right time to recover quotas... We have to do this under
Lucas De Marchi25985ed2011-03-30 22:57:33 -03001374 * superblock lock so that no one can start using the slot (and crash)
Jan Kara22053632008-10-20 23:50:38 +02001375 * before we recover it */
1376 for (i = 0; i < rm_quota_used; i++) {
1377 qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]);
1378 if (IS_ERR(qrec)) {
1379 status = PTR_ERR(qrec);
1380 mlog_errno(status);
1381 continue;
1382 }
1383 ocfs2_queue_recovery_completion(osb->journal, rm_quota[i],
1384 NULL, NULL, qrec);
1385 }
1386
Mark Fashehccd979b2005-12-15 14:31:24 -08001387 ocfs2_super_unlock(osb, 1);
1388
Srinivas Eeda9140db02009-03-06 14:21:46 -08001389 /* queue recovery for offline slots */
1390 ocfs2_queue_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001391
1392bail:
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001393 mutex_lock(&osb->recovery_lock);
Joel Becker553abd02008-02-01 12:03:57 -08001394 if (!status && !ocfs2_recovery_completed(osb)) {
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001395 mutex_unlock(&osb->recovery_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001396 goto restart;
1397 }
1398
Srinivas Eeda9140db02009-03-06 14:21:46 -08001399 ocfs2_free_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001400 osb->recovery_thread_task = NULL;
1401 mb(); /* sync with ocfs2_recovery_thread_running */
1402 wake_up(&osb->recovery_event);
1403
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001404 mutex_unlock(&osb->recovery_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001405
Jan Kara22053632008-10-20 23:50:38 +02001406 if (rm_quota)
1407 kfree(rm_quota);
1408
Mark Fashehccd979b2005-12-15 14:31:24 -08001409 /* no one is callint kthread_stop() for us so the kthread() api
1410 * requires that we call do_exit(). And it isn't exported, but
1411 * complete_and_exit() seems to be a minimal wrapper around it. */
1412 complete_and_exit(NULL, status);
1413 return status;
1414}
1415
1416void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
1417{
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001418 mutex_lock(&osb->recovery_lock);
Tao Mab4107952011-02-24 14:15:35 +08001419
1420 trace_ocfs2_recovery_thread(node_num, osb->node_num,
1421 osb->disable_recovery, osb->recovery_thread_task,
1422 osb->disable_recovery ?
1423 -1 : ocfs2_recovery_map_set(osb, node_num));
1424
Mark Fashehccd979b2005-12-15 14:31:24 -08001425 if (osb->disable_recovery)
1426 goto out;
1427
Mark Fashehccd979b2005-12-15 14:31:24 -08001428 if (osb->recovery_thread_task)
1429 goto out;
1430
1431 osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb,
Mark Fasheh78427042006-05-04 12:03:26 -07001432 "ocfs2rec");
Mark Fashehccd979b2005-12-15 14:31:24 -08001433 if (IS_ERR(osb->recovery_thread_task)) {
1434 mlog_errno((int)PTR_ERR(osb->recovery_thread_task));
1435 osb->recovery_thread_task = NULL;
1436 }
1437
1438out:
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001439 mutex_unlock(&osb->recovery_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001440 wake_up(&osb->recovery_event);
Mark Fashehccd979b2005-12-15 14:31:24 -08001441}
1442
Sunil Mushran539d8262008-07-14 17:31:10 -07001443static int ocfs2_read_journal_inode(struct ocfs2_super *osb,
1444 int slot_num,
1445 struct buffer_head **bh,
1446 struct inode **ret_inode)
1447{
1448 int status = -EACCES;
1449 struct inode *inode = NULL;
1450
1451 BUG_ON(slot_num >= osb->max_slots);
1452
1453 inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
1454 slot_num);
1455 if (!inode || is_bad_inode(inode)) {
1456 mlog_errno(status);
1457 goto bail;
1458 }
1459 SET_INODE_JOURNAL(inode);
1460
Joel Beckerb657c952008-11-13 14:49:11 -08001461 status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE);
Sunil Mushran539d8262008-07-14 17:31:10 -07001462 if (status < 0) {
1463 mlog_errno(status);
1464 goto bail;
1465 }
1466
1467 status = 0;
1468
1469bail:
1470 if (inode) {
1471 if (status || !ret_inode)
1472 iput(inode);
1473 else
1474 *ret_inode = inode;
1475 }
1476 return status;
1477}
1478
Mark Fashehccd979b2005-12-15 14:31:24 -08001479/* Does the actual journal replay and marks the journal inode as
1480 * clean. Will only replay if the journal inode is marked dirty. */
1481static int ocfs2_replay_journal(struct ocfs2_super *osb,
1482 int node_num,
1483 int slot_num)
1484{
1485 int status;
1486 int got_lock = 0;
1487 unsigned int flags;
1488 struct inode *inode = NULL;
1489 struct ocfs2_dinode *fe;
1490 journal_t *journal = NULL;
1491 struct buffer_head *bh = NULL;
Sunil Mushran539d8262008-07-14 17:31:10 -07001492 u32 slot_reco_gen;
Mark Fashehccd979b2005-12-15 14:31:24 -08001493
Sunil Mushran539d8262008-07-14 17:31:10 -07001494 status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode);
1495 if (status) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001496 mlog_errno(status);
1497 goto done;
1498 }
Sunil Mushran539d8262008-07-14 17:31:10 -07001499
1500 fe = (struct ocfs2_dinode *)bh->b_data;
1501 slot_reco_gen = ocfs2_get_recovery_generation(fe);
1502 brelse(bh);
1503 bh = NULL;
1504
1505 /*
1506 * As the fs recovery is asynchronous, there is a small chance that
1507 * another node mounted (and recovered) the slot before the recovery
1508 * thread could get the lock. To handle that, we dirty read the journal
1509 * inode for that slot to get the recovery generation. If it is
1510 * different than what we expected, the slot has been recovered.
1511 * If not, it needs recovery.
1512 */
1513 if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) {
Tao Mab4107952011-02-24 14:15:35 +08001514 trace_ocfs2_replay_journal_recovered(slot_num,
Sunil Mushran539d8262008-07-14 17:31:10 -07001515 osb->slot_recovery_generations[slot_num], slot_reco_gen);
1516 osb->slot_recovery_generations[slot_num] = slot_reco_gen;
1517 status = -EBUSY;
Mark Fashehccd979b2005-12-15 14:31:24 -08001518 goto done;
1519 }
Sunil Mushran539d8262008-07-14 17:31:10 -07001520
1521 /* Continue with recovery as the journal has not yet been recovered */
Mark Fashehccd979b2005-12-15 14:31:24 -08001522
Mark Fashehe63aecb62007-10-18 15:30:42 -07001523 status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
Mark Fashehccd979b2005-12-15 14:31:24 -08001524 if (status < 0) {
Tao Mab4107952011-02-24 14:15:35 +08001525 trace_ocfs2_replay_journal_lock_err(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001526 if (status != -ERESTARTSYS)
1527 mlog(ML_ERROR, "Could not lock journal!\n");
1528 goto done;
1529 }
1530 got_lock = 1;
1531
1532 fe = (struct ocfs2_dinode *) bh->b_data;
1533
1534 flags = le32_to_cpu(fe->id1.journal1.ij_flags);
Sunil Mushran539d8262008-07-14 17:31:10 -07001535 slot_reco_gen = ocfs2_get_recovery_generation(fe);
Mark Fashehccd979b2005-12-15 14:31:24 -08001536
1537 if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) {
Tao Mab4107952011-02-24 14:15:35 +08001538 trace_ocfs2_replay_journal_skip(node_num);
Sunil Mushran539d8262008-07-14 17:31:10 -07001539 /* Refresh recovery generation for the slot */
1540 osb->slot_recovery_generations[slot_num] = slot_reco_gen;
Mark Fashehccd979b2005-12-15 14:31:24 -08001541 goto done;
1542 }
1543
Srinivas Eeda9140db02009-03-06 14:21:46 -08001544 /* we need to run complete recovery for offline orphan slots */
1545 ocfs2_replay_map_set_state(osb, REPLAY_NEEDED);
1546
Sunil Mushran619c2002011-07-24 10:34:54 -07001547 printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\
1548 "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev),
1549 MINOR(osb->sb->s_dev));
Mark Fashehccd979b2005-12-15 14:31:24 -08001550
1551 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
1552
1553 status = ocfs2_force_read_journal(inode);
1554 if (status < 0) {
1555 mlog_errno(status);
1556 goto done;
1557 }
1558
Joel Becker2b4e30f2008-09-03 20:03:41 -07001559 journal = jbd2_journal_init_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001560 if (journal == NULL) {
1561 mlog(ML_ERROR, "Linux journal layer error\n");
1562 status = -EIO;
1563 goto done;
1564 }
1565
Joel Becker2b4e30f2008-09-03 20:03:41 -07001566 status = jbd2_journal_load(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001567 if (status < 0) {
1568 mlog_errno(status);
1569 if (!igrab(inode))
1570 BUG();
Joel Becker2b4e30f2008-09-03 20:03:41 -07001571 jbd2_journal_destroy(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001572 goto done;
1573 }
1574
1575 ocfs2_clear_journal_error(osb->sb, journal, slot_num);
1576
1577 /* wipe the journal */
Joel Becker2b4e30f2008-09-03 20:03:41 -07001578 jbd2_journal_lock_updates(journal);
1579 status = jbd2_journal_flush(journal);
1580 jbd2_journal_unlock_updates(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001581 if (status < 0)
1582 mlog_errno(status);
1583
1584 /* This will mark the node clean */
1585 flags = le32_to_cpu(fe->id1.journal1.ij_flags);
1586 flags &= ~OCFS2_JOURNAL_DIRTY_FL;
1587 fe->id1.journal1.ij_flags = cpu_to_le32(flags);
1588
Sunil Mushran539d8262008-07-14 17:31:10 -07001589 /* Increment recovery generation to indicate successful recovery */
1590 ocfs2_bump_recovery_generation(fe);
1591 osb->slot_recovery_generations[slot_num] =
1592 ocfs2_get_recovery_generation(fe);
1593
Joel Becker13723d02008-10-17 19:25:01 -07001594 ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
Joel Becker8cb471e2009-02-10 20:00:41 -08001595 status = ocfs2_write_block(osb, bh, INODE_CACHE(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001596 if (status < 0)
1597 mlog_errno(status);
1598
1599 if (!igrab(inode))
1600 BUG();
1601
Joel Becker2b4e30f2008-09-03 20:03:41 -07001602 jbd2_journal_destroy(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001603
Sunil Mushran619c2002011-07-24 10:34:54 -07001604 printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\
1605 "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev),
1606 MINOR(osb->sb->s_dev));
Mark Fashehccd979b2005-12-15 14:31:24 -08001607done:
1608 /* drop the lock on this nodes journal */
1609 if (got_lock)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001610 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001611
1612 if (inode)
1613 iput(inode);
1614
Mark Fasheha81cb882008-10-07 14:25:16 -07001615 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001616
Mark Fashehccd979b2005-12-15 14:31:24 -08001617 return status;
1618}
1619
1620/*
1621 * Do the most important parts of node recovery:
1622 * - Replay it's journal
1623 * - Stamp a clean local allocator file
1624 * - Stamp a clean truncate log
1625 * - Mark the node clean
1626 *
1627 * If this function completes without error, a node in OCFS2 can be
1628 * said to have been safely recovered. As a result, failure during the
1629 * second part of a nodes recovery process (local alloc recovery) is
1630 * far less concerning.
1631 */
1632static int ocfs2_recover_node(struct ocfs2_super *osb,
Jan Kara22053632008-10-20 23:50:38 +02001633 int node_num, int slot_num)
Mark Fashehccd979b2005-12-15 14:31:24 -08001634{
1635 int status = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001636 struct ocfs2_dinode *la_copy = NULL;
1637 struct ocfs2_dinode *tl_copy = NULL;
1638
Tao Mab4107952011-02-24 14:15:35 +08001639 trace_ocfs2_recover_node(node_num, slot_num, osb->node_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001640
1641 /* Should not ever be called to recover ourselves -- in that
1642 * case we should've called ocfs2_journal_load instead. */
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +01001643 BUG_ON(osb->node_num == node_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001644
Mark Fashehccd979b2005-12-15 14:31:24 -08001645 status = ocfs2_replay_journal(osb, node_num, slot_num);
1646 if (status < 0) {
Sunil Mushran539d8262008-07-14 17:31:10 -07001647 if (status == -EBUSY) {
Tao Mab4107952011-02-24 14:15:35 +08001648 trace_ocfs2_recover_node_skip(slot_num, node_num);
Sunil Mushran539d8262008-07-14 17:31:10 -07001649 status = 0;
1650 goto done;
1651 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001652 mlog_errno(status);
1653 goto done;
1654 }
1655
1656 /* Stamp a clean local alloc file AFTER recovering the journal... */
1657 status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy);
1658 if (status < 0) {
1659 mlog_errno(status);
1660 goto done;
1661 }
1662
1663 /* An error from begin_truncate_log_recovery is not
1664 * serious enough to warrant halting the rest of
1665 * recovery. */
1666 status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy);
1667 if (status < 0)
1668 mlog_errno(status);
1669
1670 /* Likewise, this would be a strange but ultimately not so
1671 * harmful place to get an error... */
Mark Fasheh8e8a4602008-02-01 11:59:09 -08001672 status = ocfs2_clear_slot(osb, slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001673 if (status < 0)
1674 mlog_errno(status);
1675
1676 /* This will kfree the memory pointed to by la_copy and tl_copy */
1677 ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy,
Jan Kara22053632008-10-20 23:50:38 +02001678 tl_copy, NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001679
1680 status = 0;
1681done:
1682
Mark Fashehccd979b2005-12-15 14:31:24 -08001683 return status;
1684}
1685
1686/* Test node liveness by trylocking his journal. If we get the lock,
1687 * we drop it here. Return 0 if we got the lock, -EAGAIN if node is
1688 * still alive (we couldn't get the lock) and < 0 on error. */
1689static int ocfs2_trylock_journal(struct ocfs2_super *osb,
1690 int slot_num)
1691{
1692 int status, flags;
1693 struct inode *inode = NULL;
1694
1695 inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
1696 slot_num);
1697 if (inode == NULL) {
1698 mlog(ML_ERROR, "access error\n");
1699 status = -EACCES;
1700 goto bail;
1701 }
1702 if (is_bad_inode(inode)) {
1703 mlog(ML_ERROR, "access error (bad inode)\n");
1704 iput(inode);
1705 inode = NULL;
1706 status = -EACCES;
1707 goto bail;
1708 }
1709 SET_INODE_JOURNAL(inode);
1710
1711 flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE;
Mark Fashehe63aecb62007-10-18 15:30:42 -07001712 status = ocfs2_inode_lock_full(inode, NULL, 1, flags);
Mark Fashehccd979b2005-12-15 14:31:24 -08001713 if (status < 0) {
1714 if (status != -EAGAIN)
1715 mlog_errno(status);
1716 goto bail;
1717 }
1718
Mark Fashehe63aecb62007-10-18 15:30:42 -07001719 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001720bail:
1721 if (inode)
1722 iput(inode);
1723
1724 return status;
1725}
1726
1727/* Call this underneath ocfs2_super_lock. It also assumes that the
1728 * slot info struct has been updated from disk. */
1729int ocfs2_mark_dead_nodes(struct ocfs2_super *osb)
1730{
Joel Beckerd85b20e2008-02-01 12:01:05 -08001731 unsigned int node_num;
1732 int status, i;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001733 u32 gen;
Sunil Mushran539d8262008-07-14 17:31:10 -07001734 struct buffer_head *bh = NULL;
1735 struct ocfs2_dinode *di;
Mark Fashehccd979b2005-12-15 14:31:24 -08001736
1737 /* This is called with the super block cluster lock, so we
1738 * know that the slot map can't change underneath us. */
1739
Joel Beckerd85b20e2008-02-01 12:01:05 -08001740 for (i = 0; i < osb->max_slots; i++) {
Sunil Mushran539d8262008-07-14 17:31:10 -07001741 /* Read journal inode to get the recovery generation */
1742 status = ocfs2_read_journal_inode(osb, i, &bh, NULL);
1743 if (status) {
1744 mlog_errno(status);
1745 goto bail;
1746 }
1747 di = (struct ocfs2_dinode *)bh->b_data;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001748 gen = ocfs2_get_recovery_generation(di);
Sunil Mushran539d8262008-07-14 17:31:10 -07001749 brelse(bh);
1750 bh = NULL;
1751
Mark Fasheha1af7d12008-08-19 17:20:28 -07001752 spin_lock(&osb->osb_lock);
1753 osb->slot_recovery_generations[i] = gen;
1754
Tao Mab4107952011-02-24 14:15:35 +08001755 trace_ocfs2_mark_dead_nodes(i,
1756 osb->slot_recovery_generations[i]);
Sunil Mushran539d8262008-07-14 17:31:10 -07001757
Mark Fasheha1af7d12008-08-19 17:20:28 -07001758 if (i == osb->slot_num) {
1759 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001760 continue;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001761 }
Joel Beckerd85b20e2008-02-01 12:01:05 -08001762
1763 status = ocfs2_slot_to_node_num_locked(osb, i, &node_num);
Mark Fasheha1af7d12008-08-19 17:20:28 -07001764 if (status == -ENOENT) {
1765 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001766 continue;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001767 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001768
Mark Fasheha1af7d12008-08-19 17:20:28 -07001769 if (__ocfs2_recovery_map_test(osb, node_num)) {
1770 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001771 continue;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001772 }
Joel Beckerd85b20e2008-02-01 12:01:05 -08001773 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001774
1775 /* Ok, we have a slot occupied by another node which
1776 * is not in the recovery map. We trylock his journal
1777 * file here to test if he's alive. */
1778 status = ocfs2_trylock_journal(osb, i);
1779 if (!status) {
1780 /* Since we're called from mount, we know that
1781 * the recovery thread can't race us on
1782 * setting / checking the recovery bits. */
1783 ocfs2_recovery_thread(osb, node_num);
1784 } else if ((status < 0) && (status != -EAGAIN)) {
1785 mlog_errno(status);
1786 goto bail;
1787 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001788 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001789
1790 status = 0;
1791bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001792 return status;
1793}
1794
Srinivas Eeda83273932009-06-03 17:02:55 -07001795/*
1796 * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some
1797 * randomness to the timeout to minimize multple nodes firing the timer at the
1798 * same time.
1799 */
1800static inline unsigned long ocfs2_orphan_scan_timeout(void)
1801{
1802 unsigned long time;
1803
1804 get_random_bytes(&time, sizeof(time));
1805 time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000);
1806 return msecs_to_jiffies(time);
1807}
1808
1809/*
1810 * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for
1811 * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This
1812 * is done to catch any orphans that are left over in orphan directories.
1813 *
Sunil Mushrana035bff2011-07-24 10:35:54 -07001814 * It scans all slots, even ones that are in use. It does so to handle the
1815 * case described below:
1816 *
1817 * Node 1 has an inode it was using. The dentry went away due to memory
1818 * pressure. Node 1 closes the inode, but it's on the free list. The node
1819 * has the open lock.
1820 * Node 2 unlinks the inode. It grabs the dentry lock to notify others,
1821 * but node 1 has no dentry and doesn't get the message. It trylocks the
1822 * open lock, sees that another node has a PR, and does nothing.
1823 * Later node 2 runs its orphan dir. It igets the inode, trylocks the
1824 * open lock, sees the PR still, and does nothing.
1825 * Basically, we have to trigger an orphan iput on node 1. The only way
1826 * for this to happen is if node 1 runs node 2's orphan dir.
1827 *
Srinivas Eeda83273932009-06-03 17:02:55 -07001828 * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT
1829 * seconds. It gets an EX lock on os_lockres and checks sequence number
1830 * stored in LVB. If the sequence number has changed, it means some other
1831 * node has done the scan. This node skips the scan and tracks the
1832 * sequence number. If the sequence number didn't change, it means a scan
1833 * hasn't happened. The node queues a scan and increments the
1834 * sequence number in the LVB.
1835 */
1836void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
1837{
1838 struct ocfs2_orphan_scan *os;
1839 int status, i;
1840 u32 seqno = 0;
1841
1842 os = &osb->osb_orphan_scan;
1843
Sunil Mushran692684e2009-06-19 16:53:17 -07001844 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
1845 goto out;
1846
Tao Mab4107952011-02-24 14:15:35 +08001847 trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno,
1848 atomic_read(&os->os_state));
1849
Sunil Mushrandf152c22009-06-22 11:40:07 -07001850 status = ocfs2_orphan_scan_lock(osb, &seqno);
Srinivas Eeda83273932009-06-03 17:02:55 -07001851 if (status < 0) {
1852 if (status != -EAGAIN)
1853 mlog_errno(status);
1854 goto out;
1855 }
1856
Sunil Mushran692684e2009-06-19 16:53:17 -07001857 /* Do no queue the tasks if the volume is being umounted */
1858 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
1859 goto unlock;
1860
Srinivas Eeda83273932009-06-03 17:02:55 -07001861 if (os->os_seqno != seqno) {
1862 os->os_seqno = seqno;
1863 goto unlock;
1864 }
1865
1866 for (i = 0; i < osb->max_slots; i++)
1867 ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL,
1868 NULL);
1869 /*
1870 * We queued a recovery on orphan slots, increment the sequence
1871 * number and update LVB so other node will skip the scan for a while
1872 */
1873 seqno++;
Srinivas Eeda15633a22009-06-03 17:02:56 -07001874 os->os_count++;
1875 os->os_scantime = CURRENT_TIME;
Srinivas Eeda83273932009-06-03 17:02:55 -07001876unlock:
Sunil Mushrandf152c22009-06-22 11:40:07 -07001877 ocfs2_orphan_scan_unlock(osb, seqno);
Srinivas Eeda83273932009-06-03 17:02:55 -07001878out:
Tao Mab4107952011-02-24 14:15:35 +08001879 trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno,
1880 atomic_read(&os->os_state));
Srinivas Eeda83273932009-06-03 17:02:55 -07001881 return;
1882}
1883
1884/* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */
1885void ocfs2_orphan_scan_work(struct work_struct *work)
1886{
1887 struct ocfs2_orphan_scan *os;
1888 struct ocfs2_super *osb;
1889
1890 os = container_of(work, struct ocfs2_orphan_scan,
1891 os_orphan_scan_work.work);
1892 osb = os->os_osb;
1893
1894 mutex_lock(&os->os_lock);
1895 ocfs2_queue_orphan_scan(osb);
Sunil Mushran692684e2009-06-19 16:53:17 -07001896 if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE)
Tao Ma40f165f2010-05-28 14:22:59 +08001897 queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work,
Sunil Mushran692684e2009-06-19 16:53:17 -07001898 ocfs2_orphan_scan_timeout());
Srinivas Eeda83273932009-06-03 17:02:55 -07001899 mutex_unlock(&os->os_lock);
1900}
1901
1902void ocfs2_orphan_scan_stop(struct ocfs2_super *osb)
1903{
1904 struct ocfs2_orphan_scan *os;
1905
1906 os = &osb->osb_orphan_scan;
Sunil Mushrandf152c22009-06-22 11:40:07 -07001907 if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) {
1908 atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
1909 mutex_lock(&os->os_lock);
1910 cancel_delayed_work(&os->os_orphan_scan_work);
1911 mutex_unlock(&os->os_lock);
1912 }
Srinivas Eeda83273932009-06-03 17:02:55 -07001913}
1914
Sunil Mushrandf152c22009-06-22 11:40:07 -07001915void ocfs2_orphan_scan_init(struct ocfs2_super *osb)
Srinivas Eeda83273932009-06-03 17:02:55 -07001916{
1917 struct ocfs2_orphan_scan *os;
1918
1919 os = &osb->osb_orphan_scan;
1920 os->os_osb = osb;
Srinivas Eeda15633a22009-06-03 17:02:56 -07001921 os->os_count = 0;
Sunil Mushran32119492009-06-19 16:53:18 -07001922 os->os_seqno = 0;
Srinivas Eeda83273932009-06-03 17:02:55 -07001923 mutex_init(&os->os_lock);
Sunil Mushrandf152c22009-06-22 11:40:07 -07001924 INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work);
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04001925}
Srinivas Eeda83273932009-06-03 17:02:55 -07001926
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04001927void ocfs2_orphan_scan_start(struct ocfs2_super *osb)
1928{
1929 struct ocfs2_orphan_scan *os;
1930
1931 os = &osb->osb_orphan_scan;
1932 os->os_scantime = CURRENT_TIME;
Sunil Mushrandf152c22009-06-22 11:40:07 -07001933 if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb))
1934 atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
1935 else {
1936 atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE);
Tao Ma40f165f2010-05-28 14:22:59 +08001937 queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work,
1938 ocfs2_orphan_scan_timeout());
Sunil Mushrandf152c22009-06-22 11:40:07 -07001939 }
Srinivas Eeda83273932009-06-03 17:02:55 -07001940}
1941
Mark Fasheh5eae5b92007-09-10 17:50:51 -07001942struct ocfs2_orphan_filldir_priv {
1943 struct inode *head;
1944 struct ocfs2_super *osb;
1945};
1946
1947static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len,
1948 loff_t pos, u64 ino, unsigned type)
1949{
1950 struct ocfs2_orphan_filldir_priv *p = priv;
1951 struct inode *iter;
1952
1953 if (name_len == 1 && !strncmp(".", name, 1))
1954 return 0;
1955 if (name_len == 2 && !strncmp("..", name, 2))
1956 return 0;
1957
1958 /* Skip bad inodes so that recovery can continue */
1959 iter = ocfs2_iget(p->osb, ino,
Jan Kara5fa06132008-01-11 00:11:45 +01001960 OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0);
Mark Fasheh5eae5b92007-09-10 17:50:51 -07001961 if (IS_ERR(iter))
1962 return 0;
1963
Tao Mab4107952011-02-24 14:15:35 +08001964 trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno);
Mark Fasheh5eae5b92007-09-10 17:50:51 -07001965 /* No locking is required for the next_orphan queue as there
1966 * is only ever a single process doing orphan recovery. */
1967 OCFS2_I(iter)->ip_next_orphan = p->head;
1968 p->head = iter;
1969
1970 return 0;
1971}
1972
Mark Fashehb4df6ed2006-02-22 17:35:08 -08001973static int ocfs2_queue_orphans(struct ocfs2_super *osb,
1974 int slot,
1975 struct inode **head)
Mark Fashehccd979b2005-12-15 14:31:24 -08001976{
Mark Fashehb4df6ed2006-02-22 17:35:08 -08001977 int status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001978 struct inode *orphan_dir_inode = NULL;
Mark Fasheh5eae5b92007-09-10 17:50:51 -07001979 struct ocfs2_orphan_filldir_priv priv;
1980 loff_t pos = 0;
1981
1982 priv.osb = osb;
1983 priv.head = *head;
Mark Fashehccd979b2005-12-15 14:31:24 -08001984
1985 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
1986 ORPHAN_DIR_SYSTEM_INODE,
1987 slot);
1988 if (!orphan_dir_inode) {
1989 status = -ENOENT;
1990 mlog_errno(status);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08001991 return status;
Sunil Mushran2bd63212010-01-25 16:57:38 -08001992 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001993
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08001994 mutex_lock(&orphan_dir_inode->i_mutex);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001995 status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001996 if (status < 0) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001997 mlog_errno(status);
1998 goto out;
1999 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002000
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002001 status = ocfs2_dir_foreach(orphan_dir_inode, &pos, &priv,
2002 ocfs2_orphan_filldir);
2003 if (status) {
2004 mlog_errno(status);
Mark Fasheha86370f2007-12-03 14:06:23 -08002005 goto out_cluster;
Mark Fashehccd979b2005-12-15 14:31:24 -08002006 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002007
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002008 *head = priv.head;
2009
Mark Fasheha86370f2007-12-03 14:06:23 -08002010out_cluster:
Mark Fashehe63aecb62007-10-18 15:30:42 -07002011 ocfs2_inode_unlock(orphan_dir_inode, 0);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002012out:
2013 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08002014 iput(orphan_dir_inode);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002015 return status;
2016}
2017
2018static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb,
2019 int slot)
2020{
2021 int ret;
2022
2023 spin_lock(&osb->osb_lock);
2024 ret = !osb->osb_orphan_wipes[slot];
2025 spin_unlock(&osb->osb_lock);
2026 return ret;
2027}
2028
2029static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb,
2030 int slot)
2031{
2032 spin_lock(&osb->osb_lock);
2033 /* Mark ourselves such that new processes in delete_inode()
2034 * know to quit early. */
2035 ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot);
2036 while (osb->osb_orphan_wipes[slot]) {
2037 /* If any processes are already in the middle of an
2038 * orphan wipe on this dir, then we need to wait for
2039 * them. */
2040 spin_unlock(&osb->osb_lock);
2041 wait_event_interruptible(osb->osb_wipe_event,
2042 ocfs2_orphan_recovery_can_continue(osb, slot));
2043 spin_lock(&osb->osb_lock);
2044 }
2045 spin_unlock(&osb->osb_lock);
2046}
2047
2048static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb,
2049 int slot)
2050{
2051 ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot);
2052}
2053
2054/*
2055 * Orphan recovery. Each mounted node has it's own orphan dir which we
2056 * must run during recovery. Our strategy here is to build a list of
2057 * the inodes in the orphan dir and iget/iput them. The VFS does
2058 * (most) of the rest of the work.
2059 *
2060 * Orphan recovery can happen at any time, not just mount so we have a
2061 * couple of extra considerations.
2062 *
2063 * - We grab as many inodes as we can under the orphan dir lock -
2064 * doing iget() outside the orphan dir risks getting a reference on
2065 * an invalid inode.
2066 * - We must be sure not to deadlock with other processes on the
2067 * system wanting to run delete_inode(). This can happen when they go
2068 * to lock the orphan dir and the orphan recovery process attempts to
2069 * iget() inside the orphan dir lock. This can be avoided by
2070 * advertising our state to ocfs2_delete_inode().
2071 */
2072static int ocfs2_recover_orphans(struct ocfs2_super *osb,
2073 int slot)
2074{
2075 int ret = 0;
2076 struct inode *inode = NULL;
2077 struct inode *iter;
2078 struct ocfs2_inode_info *oi;
2079
Tao Mab4107952011-02-24 14:15:35 +08002080 trace_ocfs2_recover_orphans(slot);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002081
2082 ocfs2_mark_recovering_orphan_dir(osb, slot);
2083 ret = ocfs2_queue_orphans(osb, slot, &inode);
2084 ocfs2_clear_recovering_orphan_dir(osb, slot);
2085
2086 /* Error here should be noted, but we want to continue with as
2087 * many queued inodes as we've got. */
2088 if (ret)
2089 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -08002090
2091 while (inode) {
2092 oi = OCFS2_I(inode);
Tao Mab4107952011-02-24 14:15:35 +08002093 trace_ocfs2_recover_orphans_iput(
2094 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002095
2096 iter = oi->ip_next_orphan;
2097
2098 spin_lock(&oi->ip_lock);
Mark Fasheh34d024f2007-09-24 15:56:19 -07002099 /* The remote delete code may have set these on the
2100 * assumption that the other node would wipe them
2101 * successfully. If they are still in the node's
2102 * orphan dir, we need to reset that state. */
Mark Fashehccd979b2005-12-15 14:31:24 -08002103 oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE);
2104
2105 /* Set the proper information to get us going into
2106 * ocfs2_delete_inode. */
2107 oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED;
Mark Fashehccd979b2005-12-15 14:31:24 -08002108 spin_unlock(&oi->ip_lock);
2109
2110 iput(inode);
2111
2112 inode = iter;
2113 }
2114
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002115 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002116}
2117
Jan Kara19ece542008-08-21 20:13:17 +02002118static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota)
Mark Fashehccd979b2005-12-15 14:31:24 -08002119{
2120 /* This check is good because ocfs2 will wait on our recovery
2121 * thread before changing it to something other than MOUNTED
2122 * or DISABLED. */
2123 wait_event(osb->osb_mount_event,
Jan Kara19ece542008-08-21 20:13:17 +02002124 (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) ||
2125 atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS ||
Mark Fashehccd979b2005-12-15 14:31:24 -08002126 atomic_read(&osb->vol_state) == VOLUME_DISABLED);
2127
2128 /* If there's an error on mount, then we may never get to the
2129 * MOUNTED flag, but this is set right before
2130 * dismount_volume() so we can trust it. */
2131 if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) {
Tao Mab4107952011-02-24 14:15:35 +08002132 trace_ocfs2_wait_on_mount(VOLUME_DISABLED);
Mark Fashehccd979b2005-12-15 14:31:24 -08002133 mlog(0, "mount error, exiting!\n");
2134 return -EBUSY;
2135 }
2136
2137 return 0;
2138}
2139
2140static int ocfs2_commit_thread(void *arg)
2141{
2142 int status;
2143 struct ocfs2_super *osb = arg;
2144 struct ocfs2_journal *journal = osb->journal;
2145
2146 /* we can trust j_num_trans here because _should_stop() is only set in
2147 * shutdown and nobody other than ourselves should be able to start
2148 * transactions. committing on shutdown might take a few iterations
2149 * as final transactions put deleted inodes on the list */
2150 while (!(kthread_should_stop() &&
2151 atomic_read(&journal->j_num_trans) == 0)) {
2152
Mark Fasheh745ae8ba2006-02-09 13:23:39 -08002153 wait_event_interruptible(osb->checkpoint_event,
2154 atomic_read(&journal->j_num_trans)
2155 || kthread_should_stop());
Mark Fashehccd979b2005-12-15 14:31:24 -08002156
2157 status = ocfs2_commit_cache(osb);
2158 if (status < 0)
2159 mlog_errno(status);
2160
2161 if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){
2162 mlog(ML_KTHREAD,
2163 "commit_thread: %u transactions pending on "
2164 "shutdown\n",
2165 atomic_read(&journal->j_num_trans));
2166 }
2167 }
2168
2169 return 0;
2170}
2171
Sunil Mushran539d8262008-07-14 17:31:10 -07002172/* Reads all the journal inodes without taking any cluster locks. Used
2173 * for hard readonly access to determine whether any journal requires
2174 * recovery. Also used to refresh the recovery generation numbers after
2175 * a journal has been recovered by another node.
2176 */
Mark Fashehccd979b2005-12-15 14:31:24 -08002177int ocfs2_check_journals_nolocks(struct ocfs2_super *osb)
2178{
2179 int ret = 0;
2180 unsigned int slot;
Sunil Mushran539d8262008-07-14 17:31:10 -07002181 struct buffer_head *di_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002182 struct ocfs2_dinode *di;
Sunil Mushran539d8262008-07-14 17:31:10 -07002183 int journal_dirty = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002184
2185 for(slot = 0; slot < osb->max_slots; slot++) {
Sunil Mushran539d8262008-07-14 17:31:10 -07002186 ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL);
2187 if (ret) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002188 mlog_errno(ret);
2189 goto out;
2190 }
2191
2192 di = (struct ocfs2_dinode *) di_bh->b_data;
2193
Sunil Mushran539d8262008-07-14 17:31:10 -07002194 osb->slot_recovery_generations[slot] =
2195 ocfs2_get_recovery_generation(di);
2196
Mark Fashehccd979b2005-12-15 14:31:24 -08002197 if (le32_to_cpu(di->id1.journal1.ij_flags) &
2198 OCFS2_JOURNAL_DIRTY_FL)
Sunil Mushran539d8262008-07-14 17:31:10 -07002199 journal_dirty = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08002200
2201 brelse(di_bh);
Sunil Mushran539d8262008-07-14 17:31:10 -07002202 di_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002203 }
2204
2205out:
Sunil Mushran539d8262008-07-14 17:31:10 -07002206 if (journal_dirty)
2207 ret = -EROFS;
Mark Fashehccd979b2005-12-15 14:31:24 -08002208 return ret;
2209}