1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Defines functions of journalling api
7 * Copyright (C) 2003, 2004 Oracle. All rights reserved.
11 #include <linux/types.h>
12 #include <linux/slab.h>
13 #include <linux/highmem.h>
14 #include <linux/kthread.h>
15 #include <linux/time.h>
16 #include <linux/random.h>
17 #include <linux/delay.h>
19 #include <cluster/masklog.h>
24 #include "blockcheck.h"
27 #include "extent_map.h"
28 #include "heartbeat.h"
31 #include "localalloc.h"
40 #include "buffer_head_io.h"
41 #include "ocfs2_trace.h"
43 DEFINE_SPINLOCK(trans_inc_lock
);
45 #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000
47 static int ocfs2_force_read_journal(struct inode
*inode
);
48 static int ocfs2_recover_node(struct ocfs2_super
*osb
,
49 int node_num
, int slot_num
);
50 static int __ocfs2_recovery_thread(void *arg
);
51 static int ocfs2_commit_cache(struct ocfs2_super
*osb
);
52 static int __ocfs2_wait_on_mount(struct ocfs2_super
*osb
, int quota
);
53 static int ocfs2_journal_toggle_dirty(struct ocfs2_super
*osb
,
54 int dirty
, int replayed
);
55 static int ocfs2_trylock_journal(struct ocfs2_super
*osb
,
57 static int ocfs2_recover_orphans(struct ocfs2_super
*osb
,
59 enum ocfs2_orphan_reco_type orphan_reco_type
);
60 static int ocfs2_commit_thread(void *arg
);
61 static void ocfs2_queue_recovery_completion(struct ocfs2_journal
*journal
,
63 struct ocfs2_dinode
*la_dinode
,
64 struct ocfs2_dinode
*tl_dinode
,
65 struct ocfs2_quota_recovery
*qrec
,
66 enum ocfs2_orphan_reco_type orphan_reco_type
);
68 static inline int ocfs2_wait_on_mount(struct ocfs2_super
*osb
)
70 return __ocfs2_wait_on_mount(osb
, 0);
73 static inline int ocfs2_wait_on_quotas(struct ocfs2_super
*osb
)
75 return __ocfs2_wait_on_mount(osb
, 1);
79 * This replay_map is to track online/offline slots, so we could recover
80 * offline slots during recovery and mount
83 enum ocfs2_replay_state
{
84 REPLAY_UNNEEDED
= 0, /* Replay is not needed, so ignore this map */
85 REPLAY_NEEDED
, /* Replay slots marked in rm_replay_slots */
86 REPLAY_DONE
/* Replay was already queued */
89 struct ocfs2_replay_map
{
90 unsigned int rm_slots
;
91 enum ocfs2_replay_state rm_state
;
92 unsigned char rm_replay_slots
[];
95 static void ocfs2_replay_map_set_state(struct ocfs2_super
*osb
, int state
)
100 /* If we've already queued the replay, we don't have any more to do */
101 if (osb
->replay_map
->rm_state
== REPLAY_DONE
)
104 osb
->replay_map
->rm_state
= state
;
107 int ocfs2_compute_replay_slots(struct ocfs2_super
*osb
)
109 struct ocfs2_replay_map
*replay_map
;
112 /* If replay map is already set, we don't do it again */
116 replay_map
= kzalloc(sizeof(struct ocfs2_replay_map
) +
117 (osb
->max_slots
* sizeof(char)), GFP_KERNEL
);
124 spin_lock(&osb
->osb_lock
);
126 replay_map
->rm_slots
= osb
->max_slots
;
127 replay_map
->rm_state
= REPLAY_UNNEEDED
;
129 /* set rm_replay_slots for offline slot(s) */
130 for (i
= 0; i
< replay_map
->rm_slots
; i
++) {
131 if (ocfs2_slot_to_node_num_locked(osb
, i
, &node_num
) == -ENOENT
)
132 replay_map
->rm_replay_slots
[i
] = 1;
135 osb
->replay_map
= replay_map
;
136 spin_unlock(&osb
->osb_lock
);
140 static void ocfs2_queue_replay_slots(struct ocfs2_super
*osb
,
141 enum ocfs2_orphan_reco_type orphan_reco_type
)
143 struct ocfs2_replay_map
*replay_map
= osb
->replay_map
;
149 if (replay_map
->rm_state
!= REPLAY_NEEDED
)
152 for (i
= 0; i
< replay_map
->rm_slots
; i
++)
153 if (replay_map
->rm_replay_slots
[i
])
154 ocfs2_queue_recovery_completion(osb
->journal
, i
, NULL
,
157 replay_map
->rm_state
= REPLAY_DONE
;
160 static void ocfs2_free_replay_slots(struct ocfs2_super
*osb
)
162 struct ocfs2_replay_map
*replay_map
= osb
->replay_map
;
164 if (!osb
->replay_map
)
168 osb
->replay_map
= NULL
;
171 int ocfs2_recovery_init(struct ocfs2_super
*osb
)
173 struct ocfs2_recovery_map
*rm
;
175 mutex_init(&osb
->recovery_lock
);
176 osb
->disable_recovery
= 0;
177 osb
->recovery_thread_task
= NULL
;
178 init_waitqueue_head(&osb
->recovery_event
);
180 rm
= kzalloc(sizeof(struct ocfs2_recovery_map
) +
181 osb
->max_slots
* sizeof(unsigned int),
188 rm
->rm_entries
= (unsigned int *)((char *)rm
+
189 sizeof(struct ocfs2_recovery_map
));
190 osb
->recovery_map
= rm
;
195 /* we can't grab the goofy sem lock from inside wait_event, so we use
196 * memory barriers to make sure that we'll see the null task before
198 static int ocfs2_recovery_thread_running(struct ocfs2_super
*osb
)
201 return osb
->recovery_thread_task
!= NULL
;
204 void ocfs2_recovery_exit(struct ocfs2_super
*osb
)
206 struct ocfs2_recovery_map
*rm
;
208 /* disable any new recovery threads and wait for any currently
209 * running ones to exit. Do this before setting the vol_state. */
210 mutex_lock(&osb
->recovery_lock
);
211 osb
->disable_recovery
= 1;
212 mutex_unlock(&osb
->recovery_lock
);
213 wait_event(osb
->recovery_event
, !ocfs2_recovery_thread_running(osb
));
215 /* At this point, we know that no more recovery threads can be
216 * launched, so wait for any recovery completion work to
219 flush_workqueue(osb
->ocfs2_wq
);
222 * Now that recovery is shut down, and the osb is about to be
223 * freed, the osb_lock is not taken here.
225 rm
= osb
->recovery_map
;
226 /* XXX: Should we bug if there are dirty entries? */
231 static int __ocfs2_recovery_map_test(struct ocfs2_super
*osb
,
232 unsigned int node_num
)
235 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
237 assert_spin_locked(&osb
->osb_lock
);
239 for (i
= 0; i
< rm
->rm_used
; i
++) {
240 if (rm
->rm_entries
[i
] == node_num
)
247 /* Behaves like test-and-set. Returns the previous value */
248 static int ocfs2_recovery_map_set(struct ocfs2_super
*osb
,
249 unsigned int node_num
)
251 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
253 spin_lock(&osb
->osb_lock
);
254 if (__ocfs2_recovery_map_test(osb
, node_num
)) {
255 spin_unlock(&osb
->osb_lock
);
259 /* XXX: Can this be exploited? Not from o2dlm... */
260 BUG_ON(rm
->rm_used
>= osb
->max_slots
);
262 rm
->rm_entries
[rm
->rm_used
] = node_num
;
264 spin_unlock(&osb
->osb_lock
);
269 static void ocfs2_recovery_map_clear(struct ocfs2_super
*osb
,
270 unsigned int node_num
)
273 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
275 spin_lock(&osb
->osb_lock
);
277 for (i
= 0; i
< rm
->rm_used
; i
++) {
278 if (rm
->rm_entries
[i
] == node_num
)
282 if (i
< rm
->rm_used
) {
283 /* XXX: be careful with the pointer math */
284 memmove(&(rm
->rm_entries
[i
]), &(rm
->rm_entries
[i
+ 1]),
285 (rm
->rm_used
- i
- 1) * sizeof(unsigned int));
289 spin_unlock(&osb
->osb_lock
);
292 static int ocfs2_commit_cache(struct ocfs2_super
*osb
)
295 unsigned int flushed
;
296 struct ocfs2_journal
*journal
= NULL
;
298 journal
= osb
->journal
;
300 /* Flush all pending commits and checkpoint the journal. */
301 down_write(&journal
->j_trans_barrier
);
303 flushed
= atomic_read(&journal
->j_num_trans
);
304 trace_ocfs2_commit_cache_begin(flushed
);
306 up_write(&journal
->j_trans_barrier
);
310 jbd2_journal_lock_updates(journal
->j_journal
);
311 status
= jbd2_journal_flush(journal
->j_journal
, 0);
312 jbd2_journal_unlock_updates(journal
->j_journal
);
314 up_write(&journal
->j_trans_barrier
);
319 ocfs2_inc_trans_id(journal
);
321 flushed
= atomic_read(&journal
->j_num_trans
);
322 atomic_set(&journal
->j_num_trans
, 0);
323 up_write(&journal
->j_trans_barrier
);
325 trace_ocfs2_commit_cache_end(journal
->j_trans_id
, flushed
);
327 ocfs2_wake_downconvert_thread(osb
);
328 wake_up(&journal
->j_checkpointed
);
333 handle_t
*ocfs2_start_trans(struct ocfs2_super
*osb
, int max_buffs
)
335 journal_t
*journal
= osb
->journal
->j_journal
;
338 BUG_ON(!osb
|| !osb
->journal
->j_journal
);
340 if (ocfs2_is_hard_readonly(osb
))
341 return ERR_PTR(-EROFS
);
343 BUG_ON(osb
->journal
->j_state
== OCFS2_JOURNAL_FREE
);
344 BUG_ON(max_buffs
<= 0);
346 /* Nested transaction? Just return the handle... */
347 if (journal_current_handle())
348 return jbd2_journal_start(journal
, max_buffs
);
350 sb_start_intwrite(osb
->sb
);
352 down_read(&osb
->journal
->j_trans_barrier
);
354 handle
= jbd2_journal_start(journal
, max_buffs
);
355 if (IS_ERR(handle
)) {
356 up_read(&osb
->journal
->j_trans_barrier
);
357 sb_end_intwrite(osb
->sb
);
359 mlog_errno(PTR_ERR(handle
));
361 if (is_journal_aborted(journal
)) {
362 ocfs2_abort(osb
->sb
, "Detected aborted journal\n");
363 handle
= ERR_PTR(-EROFS
);
366 if (!ocfs2_mount_local(osb
))
367 atomic_inc(&(osb
->journal
->j_num_trans
));
373 int ocfs2_commit_trans(struct ocfs2_super
*osb
,
377 struct ocfs2_journal
*journal
= osb
->journal
;
381 nested
= handle
->h_ref
> 1;
382 ret
= jbd2_journal_stop(handle
);
387 up_read(&journal
->j_trans_barrier
);
388 sb_end_intwrite(osb
->sb
);
395 * 'nblocks' is what you want to add to the current transaction.
397 * This might call jbd2_journal_restart() which will commit dirty buffers
398 * and then restart the transaction. Before calling
399 * ocfs2_extend_trans(), any changed blocks should have been
400 * dirtied. After calling it, all blocks which need to be changed must
401 * go through another set of journal_access/journal_dirty calls.
403 * WARNING: This will not release any semaphores or disk locks taken
404 * during the transaction, so make sure they were taken *before*
405 * start_trans or we'll have ordering deadlocks.
407 * WARNING2: Note that we do *not* drop j_trans_barrier here. This is
408 * good because transaction ids haven't yet been recorded on the
409 * cluster locks associated with this handle.
411 int ocfs2_extend_trans(handle_t
*handle
, int nblocks
)
413 int status
, old_nblocks
;
421 old_nblocks
= jbd2_handle_buffer_credits(handle
);
423 trace_ocfs2_extend_trans(old_nblocks
, nblocks
);
425 #ifdef CONFIG_OCFS2_DEBUG_FS
428 status
= jbd2_journal_extend(handle
, nblocks
, 0);
436 trace_ocfs2_extend_trans_restart(old_nblocks
+ nblocks
);
437 status
= jbd2_journal_restart(handle
,
438 old_nblocks
+ nblocks
);
451 * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA.
452 * If that fails, restart the transaction & regain write access for the
453 * buffer head which is used for metadata modifications.
454 * Taken from Ext4: extend_or_restart_transaction()
456 int ocfs2_allocate_extend_trans(handle_t
*handle
, int thresh
)
458 int status
, old_nblks
;
462 old_nblks
= jbd2_handle_buffer_credits(handle
);
463 trace_ocfs2_allocate_extend_trans(old_nblks
, thresh
);
465 if (old_nblks
< thresh
)
468 status
= jbd2_journal_extend(handle
, OCFS2_MAX_TRANS_DATA
, 0);
475 status
= jbd2_journal_restart(handle
, OCFS2_MAX_TRANS_DATA
);
485 struct ocfs2_triggers
{
486 struct jbd2_buffer_trigger_type ot_triggers
;
490 static inline struct ocfs2_triggers
*to_ocfs2_trigger(struct jbd2_buffer_trigger_type
*triggers
)
492 return container_of(triggers
, struct ocfs2_triggers
, ot_triggers
);
495 static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type
*triggers
,
496 struct buffer_head
*bh
,
497 void *data
, size_t size
)
499 struct ocfs2_triggers
*ot
= to_ocfs2_trigger(triggers
);
502 * We aren't guaranteed to have the superblock here, so we
503 * must unconditionally compute the ecc data.
504 * __ocfs2_journal_access() will only set the triggers if
505 * metaecc is enabled.
507 ocfs2_block_check_compute(data
, size
, data
+ ot
->ot_offset
);
511 * Quota blocks have their own trigger because the struct ocfs2_block_check
512 * offset depends on the blocksize.
514 static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type
*triggers
,
515 struct buffer_head
*bh
,
516 void *data
, size_t size
)
518 struct ocfs2_disk_dqtrailer
*dqt
=
519 ocfs2_block_dqtrailer(size
, data
);
522 * We aren't guaranteed to have the superblock here, so we
523 * must unconditionally compute the ecc data.
524 * __ocfs2_journal_access() will only set the triggers if
525 * metaecc is enabled.
527 ocfs2_block_check_compute(data
, size
, &dqt
->dq_check
);
531 * Directory blocks also have their own trigger because the
532 * struct ocfs2_block_check offset depends on the blocksize.
534 static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type
*triggers
,
535 struct buffer_head
*bh
,
536 void *data
, size_t size
)
538 struct ocfs2_dir_block_trailer
*trailer
=
539 ocfs2_dir_trailer_from_size(size
, data
);
542 * We aren't guaranteed to have the superblock here, so we
543 * must unconditionally compute the ecc data.
544 * __ocfs2_journal_access() will only set the triggers if
545 * metaecc is enabled.
547 ocfs2_block_check_compute(data
, size
, &trailer
->db_check
);
550 static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type
*triggers
,
551 struct buffer_head
*bh
)
554 "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, "
555 "bh->b_blocknr = %llu\n",
557 (unsigned long long)bh
->b_blocknr
);
559 ocfs2_error(bh
->b_bdev
->bd_super
,
560 "JBD2 has aborted our journal, ocfs2 cannot continue\n");
563 static struct ocfs2_triggers di_triggers
= {
565 .t_frozen
= ocfs2_frozen_trigger
,
566 .t_abort
= ocfs2_abort_trigger
,
568 .ot_offset
= offsetof(struct ocfs2_dinode
, i_check
),
571 static struct ocfs2_triggers eb_triggers
= {
573 .t_frozen
= ocfs2_frozen_trigger
,
574 .t_abort
= ocfs2_abort_trigger
,
576 .ot_offset
= offsetof(struct ocfs2_extent_block
, h_check
),
579 static struct ocfs2_triggers rb_triggers
= {
581 .t_frozen
= ocfs2_frozen_trigger
,
582 .t_abort
= ocfs2_abort_trigger
,
584 .ot_offset
= offsetof(struct ocfs2_refcount_block
, rf_check
),
587 static struct ocfs2_triggers gd_triggers
= {
589 .t_frozen
= ocfs2_frozen_trigger
,
590 .t_abort
= ocfs2_abort_trigger
,
592 .ot_offset
= offsetof(struct ocfs2_group_desc
, bg_check
),
595 static struct ocfs2_triggers db_triggers
= {
597 .t_frozen
= ocfs2_db_frozen_trigger
,
598 .t_abort
= ocfs2_abort_trigger
,
602 static struct ocfs2_triggers xb_triggers
= {
604 .t_frozen
= ocfs2_frozen_trigger
,
605 .t_abort
= ocfs2_abort_trigger
,
607 .ot_offset
= offsetof(struct ocfs2_xattr_block
, xb_check
),
610 static struct ocfs2_triggers dq_triggers
= {
612 .t_frozen
= ocfs2_dq_frozen_trigger
,
613 .t_abort
= ocfs2_abort_trigger
,
617 static struct ocfs2_triggers dr_triggers
= {
619 .t_frozen
= ocfs2_frozen_trigger
,
620 .t_abort
= ocfs2_abort_trigger
,
622 .ot_offset
= offsetof(struct ocfs2_dx_root_block
, dr_check
),
625 static struct ocfs2_triggers dl_triggers
= {
627 .t_frozen
= ocfs2_frozen_trigger
,
628 .t_abort
= ocfs2_abort_trigger
,
630 .ot_offset
= offsetof(struct ocfs2_dx_leaf
, dl_check
),
633 static int __ocfs2_journal_access(handle_t
*handle
,
634 struct ocfs2_caching_info
*ci
,
635 struct buffer_head
*bh
,
636 struct ocfs2_triggers
*triggers
,
640 struct ocfs2_super
*osb
=
641 OCFS2_SB(ocfs2_metadata_cache_get_super(ci
));
643 BUG_ON(!ci
|| !ci
->ci_ops
);
647 trace_ocfs2_journal_access(
648 (unsigned long long)ocfs2_metadata_cache_owner(ci
),
649 (unsigned long long)bh
->b_blocknr
, type
, bh
->b_size
);
651 /* we can safely remove this assertion after testing. */
652 if (!buffer_uptodate(bh
)) {
653 mlog(ML_ERROR
, "giving me a buffer that's not uptodate!\n");
654 mlog(ML_ERROR
, "b_blocknr=%llu, b_state=0x%lx\n",
655 (unsigned long long)bh
->b_blocknr
, bh
->b_state
);
659 * A previous transaction with a couple of buffer heads fail
660 * to checkpoint, so all the bhs are marked as BH_Write_EIO.
661 * For current transaction, the bh is just among those error
662 * bhs which previous transaction handle. We can't just clear
663 * its BH_Write_EIO and reuse directly, since other bhs are
664 * not written to disk yet and that will cause metadata
665 * inconsistency. So we should set fs read-only to avoid
668 if (buffer_write_io_error(bh
) && !buffer_uptodate(bh
)) {
670 return ocfs2_error(osb
->sb
, "A previous attempt to "
671 "write this buffer head failed\n");
676 /* Set the current transaction information on the ci so
677 * that the locking code knows whether it can drop it's locks
678 * on this ci or not. We're protected from the commit
679 * thread updating the current transaction id until
680 * ocfs2_commit_trans() because ocfs2_start_trans() took
681 * j_trans_barrier for us. */
682 ocfs2_set_ci_lock_trans(osb
->journal
, ci
);
684 ocfs2_metadata_cache_io_lock(ci
);
686 case OCFS2_JOURNAL_ACCESS_CREATE
:
687 case OCFS2_JOURNAL_ACCESS_WRITE
:
688 status
= jbd2_journal_get_write_access(handle
, bh
);
691 case OCFS2_JOURNAL_ACCESS_UNDO
:
692 status
= jbd2_journal_get_undo_access(handle
, bh
);
697 mlog(ML_ERROR
, "Unknown access type!\n");
699 if (!status
&& ocfs2_meta_ecc(osb
) && triggers
)
700 jbd2_journal_set_triggers(bh
, &triggers
->ot_triggers
);
701 ocfs2_metadata_cache_io_unlock(ci
);
704 mlog(ML_ERROR
, "Error %d getting %d access to buffer!\n",
710 int ocfs2_journal_access_di(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
711 struct buffer_head
*bh
, int type
)
713 return __ocfs2_journal_access(handle
, ci
, bh
, &di_triggers
, type
);
716 int ocfs2_journal_access_eb(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
717 struct buffer_head
*bh
, int type
)
719 return __ocfs2_journal_access(handle
, ci
, bh
, &eb_triggers
, type
);
722 int ocfs2_journal_access_rb(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
723 struct buffer_head
*bh
, int type
)
725 return __ocfs2_journal_access(handle
, ci
, bh
, &rb_triggers
,
729 int ocfs2_journal_access_gd(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
730 struct buffer_head
*bh
, int type
)
732 return __ocfs2_journal_access(handle
, ci
, bh
, &gd_triggers
, type
);
735 int ocfs2_journal_access_db(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
736 struct buffer_head
*bh
, int type
)
738 return __ocfs2_journal_access(handle
, ci
, bh
, &db_triggers
, type
);
741 int ocfs2_journal_access_xb(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
742 struct buffer_head
*bh
, int type
)
744 return __ocfs2_journal_access(handle
, ci
, bh
, &xb_triggers
, type
);
747 int ocfs2_journal_access_dq(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
748 struct buffer_head
*bh
, int type
)
750 return __ocfs2_journal_access(handle
, ci
, bh
, &dq_triggers
, type
);
753 int ocfs2_journal_access_dr(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
754 struct buffer_head
*bh
, int type
)
756 return __ocfs2_journal_access(handle
, ci
, bh
, &dr_triggers
, type
);
759 int ocfs2_journal_access_dl(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
760 struct buffer_head
*bh
, int type
)
762 return __ocfs2_journal_access(handle
, ci
, bh
, &dl_triggers
, type
);
765 int ocfs2_journal_access(handle_t
*handle
, struct ocfs2_caching_info
*ci
,
766 struct buffer_head
*bh
, int type
)
768 return __ocfs2_journal_access(handle
, ci
, bh
, NULL
, type
);
771 void ocfs2_journal_dirty(handle_t
*handle
, struct buffer_head
*bh
)
775 trace_ocfs2_journal_dirty((unsigned long long)bh
->b_blocknr
);
777 status
= jbd2_journal_dirty_metadata(handle
, bh
);
780 if (!is_handle_aborted(handle
)) {
781 journal_t
*journal
= handle
->h_transaction
->t_journal
;
782 struct super_block
*sb
= bh
->b_bdev
->bd_super
;
784 mlog(ML_ERROR
, "jbd2_journal_dirty_metadata failed. "
785 "Aborting transaction and journal.\n");
786 handle
->h_err
= status
;
787 jbd2_journal_abort_handle(handle
);
788 jbd2_journal_abort(journal
, status
);
789 ocfs2_abort(sb
, "Journal already aborted.\n");
794 #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE)
796 void ocfs2_set_journal_params(struct ocfs2_super
*osb
)
798 journal_t
*journal
= osb
->journal
->j_journal
;
799 unsigned long commit_interval
= OCFS2_DEFAULT_COMMIT_INTERVAL
;
801 if (osb
->osb_commit_interval
)
802 commit_interval
= osb
->osb_commit_interval
;
804 write_lock(&journal
->j_state_lock
);
805 journal
->j_commit_interval
= commit_interval
;
806 if (osb
->s_mount_opt
& OCFS2_MOUNT_BARRIER
)
807 journal
->j_flags
|= JBD2_BARRIER
;
809 journal
->j_flags
&= ~JBD2_BARRIER
;
810 write_unlock(&journal
->j_state_lock
);
813 int ocfs2_journal_init(struct ocfs2_journal
*journal
, int *dirty
)
816 struct inode
*inode
= NULL
; /* the journal inode */
817 journal_t
*j_journal
= NULL
;
818 struct ocfs2_dinode
*di
= NULL
;
819 struct buffer_head
*bh
= NULL
;
820 struct ocfs2_super
*osb
;
825 osb
= journal
->j_osb
;
827 /* already have the inode for our journal */
828 inode
= ocfs2_get_system_file_inode(osb
, JOURNAL_SYSTEM_INODE
,
835 if (is_bad_inode(inode
)) {
836 mlog(ML_ERROR
, "access error (bad inode)\n");
843 SET_INODE_JOURNAL(inode
);
844 OCFS2_I(inode
)->ip_open_count
++;
846 /* Skip recovery waits here - journal inode metadata never
847 * changes in a live cluster so it can be considered an
848 * exception to the rule. */
849 status
= ocfs2_inode_lock_full(inode
, &bh
, 1, OCFS2_META_LOCK_RECOVERY
);
851 if (status
!= -ERESTARTSYS
)
852 mlog(ML_ERROR
, "Could not get lock on journal!\n");
857 di
= (struct ocfs2_dinode
*)bh
->b_data
;
859 if (i_size_read(inode
) < OCFS2_MIN_JOURNAL_SIZE
) {
860 mlog(ML_ERROR
, "Journal file size (%lld) is too small!\n",
866 trace_ocfs2_journal_init(i_size_read(inode
),
867 (unsigned long long)inode
->i_blocks
,
868 OCFS2_I(inode
)->ip_clusters
);
870 /* call the kernels journal init function now */
871 j_journal
= jbd2_journal_init_inode(inode
);
872 if (j_journal
== NULL
) {
873 mlog(ML_ERROR
, "Linux journal layer error\n");
878 trace_ocfs2_journal_init_maxlen(j_journal
->j_total_len
);
880 *dirty
= (le32_to_cpu(di
->id1
.journal1
.ij_flags
) &
881 OCFS2_JOURNAL_DIRTY_FL
);
883 journal
->j_journal
= j_journal
;
884 journal
->j_journal
->j_submit_inode_data_buffers
=
885 jbd2_journal_submit_inode_data_buffers
;
886 journal
->j_journal
->j_finish_inode_data_buffers
=
887 jbd2_journal_finish_inode_data_buffers
;
888 journal
->j_inode
= inode
;
891 ocfs2_set_journal_params(osb
);
893 journal
->j_state
= OCFS2_JOURNAL_LOADED
;
899 ocfs2_inode_unlock(inode
, 1);
902 OCFS2_I(inode
)->ip_open_count
--;
910 static void ocfs2_bump_recovery_generation(struct ocfs2_dinode
*di
)
912 le32_add_cpu(&(di
->id1
.journal1
.ij_recovery_generation
), 1);
915 static u32
ocfs2_get_recovery_generation(struct ocfs2_dinode
*di
)
917 return le32_to_cpu(di
->id1
.journal1
.ij_recovery_generation
);
920 static int ocfs2_journal_toggle_dirty(struct ocfs2_super
*osb
,
921 int dirty
, int replayed
)
925 struct ocfs2_journal
*journal
= osb
->journal
;
926 struct buffer_head
*bh
= journal
->j_bh
;
927 struct ocfs2_dinode
*fe
;
929 fe
= (struct ocfs2_dinode
*)bh
->b_data
;
931 /* The journal bh on the osb always comes from ocfs2_journal_init()
932 * and was validated there inside ocfs2_inode_lock_full(). It's a
933 * code bug if we mess it up. */
934 BUG_ON(!OCFS2_IS_VALID_DINODE(fe
));
936 flags
= le32_to_cpu(fe
->id1
.journal1
.ij_flags
);
938 flags
|= OCFS2_JOURNAL_DIRTY_FL
;
940 flags
&= ~OCFS2_JOURNAL_DIRTY_FL
;
941 fe
->id1
.journal1
.ij_flags
= cpu_to_le32(flags
);
944 ocfs2_bump_recovery_generation(fe
);
946 ocfs2_compute_meta_ecc(osb
->sb
, bh
->b_data
, &fe
->i_check
);
947 status
= ocfs2_write_block(osb
, bh
, INODE_CACHE(journal
->j_inode
));
955 * If the journal has been kmalloc'd it needs to be freed after this
958 void ocfs2_journal_shutdown(struct ocfs2_super
*osb
)
960 struct ocfs2_journal
*journal
= NULL
;
962 struct inode
*inode
= NULL
;
963 int num_running_trans
= 0;
967 journal
= osb
->journal
;
971 inode
= journal
->j_inode
;
973 if (journal
->j_state
!= OCFS2_JOURNAL_LOADED
)
976 /* need to inc inode use count - jbd2_journal_destroy will iput. */
980 num_running_trans
= atomic_read(&(osb
->journal
->j_num_trans
));
981 trace_ocfs2_journal_shutdown(num_running_trans
);
983 /* Do a commit_cache here. It will flush our journal, *and*
984 * release any locks that are still held.
985 * set the SHUTDOWN flag and release the trans lock.
986 * the commit thread will take the trans lock for us below. */
987 journal
->j_state
= OCFS2_JOURNAL_IN_SHUTDOWN
;
989 /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not
990 * drop the trans_lock (which we want to hold until we
991 * completely destroy the journal. */
992 if (osb
->commit_task
) {
993 /* Wait for the commit thread */
994 trace_ocfs2_journal_shutdown_wait(osb
->commit_task
);
995 kthread_stop(osb
->commit_task
);
996 osb
->commit_task
= NULL
;
999 BUG_ON(atomic_read(&(osb
->journal
->j_num_trans
)) != 0);
1001 if (ocfs2_mount_local(osb
)) {
1002 jbd2_journal_lock_updates(journal
->j_journal
);
1003 status
= jbd2_journal_flush(journal
->j_journal
, 0);
1004 jbd2_journal_unlock_updates(journal
->j_journal
);
1009 /* Shutdown the kernel journal system */
1010 if (!jbd2_journal_destroy(journal
->j_journal
) && !status
) {
1012 * Do not toggle if flush was unsuccessful otherwise
1013 * will leave dirty metadata in a "clean" journal
1015 status
= ocfs2_journal_toggle_dirty(osb
, 0, 0);
1019 journal
->j_journal
= NULL
;
1021 OCFS2_I(inode
)->ip_open_count
--;
1023 /* unlock our journal */
1024 ocfs2_inode_unlock(inode
, 1);
1026 brelse(journal
->j_bh
);
1027 journal
->j_bh
= NULL
;
1029 journal
->j_state
= OCFS2_JOURNAL_FREE
;
1031 // up_write(&journal->j_trans_barrier);
1036 static void ocfs2_clear_journal_error(struct super_block
*sb
,
1042 olderr
= jbd2_journal_errno(journal
);
1044 mlog(ML_ERROR
, "File system error %d recorded in "
1045 "journal %u.\n", olderr
, slot
);
1046 mlog(ML_ERROR
, "File system on device %s needs checking.\n",
1049 jbd2_journal_ack_err(journal
);
1050 jbd2_journal_clear_err(journal
);
1054 int ocfs2_journal_load(struct ocfs2_journal
*journal
, int local
, int replayed
)
1057 struct ocfs2_super
*osb
;
1061 osb
= journal
->j_osb
;
1063 status
= jbd2_journal_load(journal
->j_journal
);
1065 mlog(ML_ERROR
, "Failed to load journal!\n");
1069 ocfs2_clear_journal_error(osb
->sb
, journal
->j_journal
, osb
->slot_num
);
1072 jbd2_journal_lock_updates(journal
->j_journal
);
1073 status
= jbd2_journal_flush(journal
->j_journal
, 0);
1074 jbd2_journal_unlock_updates(journal
->j_journal
);
1079 status
= ocfs2_journal_toggle_dirty(osb
, 1, replayed
);
1085 /* Launch the commit thread */
1087 osb
->commit_task
= kthread_run(ocfs2_commit_thread
, osb
,
1088 "ocfs2cmt-%s", osb
->uuid_str
);
1089 if (IS_ERR(osb
->commit_task
)) {
1090 status
= PTR_ERR(osb
->commit_task
);
1091 osb
->commit_task
= NULL
;
1092 mlog(ML_ERROR
, "unable to launch ocfs2commit thread, "
1093 "error=%d", status
);
1097 osb
->commit_task
= NULL
;
1104 /* 'full' flag tells us whether we clear out all blocks or if we just
1105 * mark the journal clean */
1106 int ocfs2_journal_wipe(struct ocfs2_journal
*journal
, int full
)
1112 status
= jbd2_journal_wipe(journal
->j_journal
, full
);
1118 status
= ocfs2_journal_toggle_dirty(journal
->j_osb
, 0, 0);
1126 static int ocfs2_recovery_completed(struct ocfs2_super
*osb
)
1129 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
1131 spin_lock(&osb
->osb_lock
);
1132 empty
= (rm
->rm_used
== 0);
1133 spin_unlock(&osb
->osb_lock
);
1138 void ocfs2_wait_for_recovery(struct ocfs2_super
*osb
)
1140 wait_event(osb
->recovery_event
, ocfs2_recovery_completed(osb
));
1144 * JBD Might read a cached version of another nodes journal file. We
1145 * don't want this as this file changes often and we get no
1146 * notification on those changes. The only way to be sure that we've
1147 * got the most up to date version of those blocks then is to force
1148 * read them off disk. Just searching through the buffer cache won't
1149 * work as there may be pages backing this file which are still marked
1150 * up to date. We know things can't change on this file underneath us
1151 * as we have the lock by now :)
1153 static int ocfs2_force_read_journal(struct inode
*inode
)
1157 u64 v_blkno
, p_blkno
, p_blocks
, num_blocks
;
1158 struct buffer_head
*bh
= NULL
;
1159 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
1161 num_blocks
= ocfs2_blocks_for_bytes(inode
->i_sb
, i_size_read(inode
));
1163 while (v_blkno
< num_blocks
) {
1164 status
= ocfs2_extent_map_get_blocks(inode
, v_blkno
,
1165 &p_blkno
, &p_blocks
, NULL
);
1171 for (i
= 0; i
< p_blocks
; i
++, p_blkno
++) {
1172 bh
= __find_get_block(osb
->sb
->s_bdev
, p_blkno
,
1173 osb
->sb
->s_blocksize
);
1174 /* block not cached. */
1180 /* We are reading journal data which should not
1181 * be put in the uptodate cache.
1183 status
= ocfs2_read_blocks_sync(osb
, p_blkno
, 1, &bh
);
1193 v_blkno
+= p_blocks
;
1200 struct ocfs2_la_recovery_item
{
1201 struct list_head lri_list
;
1203 struct ocfs2_dinode
*lri_la_dinode
;
1204 struct ocfs2_dinode
*lri_tl_dinode
;
1205 struct ocfs2_quota_recovery
*lri_qrec
;
1206 enum ocfs2_orphan_reco_type lri_orphan_reco_type
;
1209 /* Does the second half of the recovery process. By this point, the
1210 * node is marked clean and can actually be considered recovered,
1211 * hence it's no longer in the recovery map, but there's still some
1212 * cleanup we can do which shouldn't happen within the recovery thread
1213 * as locking in that context becomes very difficult if we are to take
1214 * recovering nodes into account.
1216 * NOTE: This function can and will sleep on recovery of other nodes
1217 * during cluster locking, just like any other ocfs2 process.
1219 void ocfs2_complete_recovery(struct work_struct
*work
)
1222 struct ocfs2_journal
*journal
=
1223 container_of(work
, struct ocfs2_journal
, j_recovery_work
);
1224 struct ocfs2_super
*osb
= journal
->j_osb
;
1225 struct ocfs2_dinode
*la_dinode
, *tl_dinode
;
1226 struct ocfs2_la_recovery_item
*item
, *n
;
1227 struct ocfs2_quota_recovery
*qrec
;
1228 enum ocfs2_orphan_reco_type orphan_reco_type
;
1229 LIST_HEAD(tmp_la_list
);
1231 trace_ocfs2_complete_recovery(
1232 (unsigned long long)OCFS2_I(journal
->j_inode
)->ip_blkno
);
1234 spin_lock(&journal
->j_lock
);
1235 list_splice_init(&journal
->j_la_cleanups
, &tmp_la_list
);
1236 spin_unlock(&journal
->j_lock
);
1238 list_for_each_entry_safe(item
, n
, &tmp_la_list
, lri_list
) {
1239 list_del_init(&item
->lri_list
);
1241 ocfs2_wait_on_quotas(osb
);
1243 la_dinode
= item
->lri_la_dinode
;
1244 tl_dinode
= item
->lri_tl_dinode
;
1245 qrec
= item
->lri_qrec
;
1246 orphan_reco_type
= item
->lri_orphan_reco_type
;
1248 trace_ocfs2_complete_recovery_slot(item
->lri_slot
,
1249 la_dinode
? le64_to_cpu(la_dinode
->i_blkno
) : 0,
1250 tl_dinode
? le64_to_cpu(tl_dinode
->i_blkno
) : 0,
1254 ret
= ocfs2_complete_local_alloc_recovery(osb
,
1263 ret
= ocfs2_complete_truncate_log_recovery(osb
,
1271 ret
= ocfs2_recover_orphans(osb
, item
->lri_slot
,
1277 ret
= ocfs2_finish_quota_recovery(osb
, qrec
,
1281 /* Recovery info is already freed now */
1287 trace_ocfs2_complete_recovery_end(ret
);
1290 /* NOTE: This function always eats your references to la_dinode and
1291 * tl_dinode, either manually on error, or by passing them to
1292 * ocfs2_complete_recovery */
1293 static void ocfs2_queue_recovery_completion(struct ocfs2_journal
*journal
,
1295 struct ocfs2_dinode
*la_dinode
,
1296 struct ocfs2_dinode
*tl_dinode
,
1297 struct ocfs2_quota_recovery
*qrec
,
1298 enum ocfs2_orphan_reco_type orphan_reco_type
)
1300 struct ocfs2_la_recovery_item
*item
;
1302 item
= kmalloc(sizeof(struct ocfs2_la_recovery_item
), GFP_NOFS
);
1304 /* Though we wish to avoid it, we are in fact safe in
1305 * skipping local alloc cleanup as fsck.ocfs2 is more
1306 * than capable of reclaiming unused space. */
1311 ocfs2_free_quota_recovery(qrec
);
1313 mlog_errno(-ENOMEM
);
1317 INIT_LIST_HEAD(&item
->lri_list
);
1318 item
->lri_la_dinode
= la_dinode
;
1319 item
->lri_slot
= slot_num
;
1320 item
->lri_tl_dinode
= tl_dinode
;
1321 item
->lri_qrec
= qrec
;
1322 item
->lri_orphan_reco_type
= orphan_reco_type
;
1324 spin_lock(&journal
->j_lock
);
1325 list_add_tail(&item
->lri_list
, &journal
->j_la_cleanups
);
1326 queue_work(journal
->j_osb
->ocfs2_wq
, &journal
->j_recovery_work
);
1327 spin_unlock(&journal
->j_lock
);
1330 /* Called by the mount code to queue recovery the last part of
1331 * recovery for it's own and offline slot(s). */
1332 void ocfs2_complete_mount_recovery(struct ocfs2_super
*osb
)
1334 struct ocfs2_journal
*journal
= osb
->journal
;
1336 if (ocfs2_is_hard_readonly(osb
))
1339 /* No need to queue up our truncate_log as regular cleanup will catch
1341 ocfs2_queue_recovery_completion(journal
, osb
->slot_num
,
1342 osb
->local_alloc_copy
, NULL
, NULL
,
1343 ORPHAN_NEED_TRUNCATE
);
1344 ocfs2_schedule_truncate_log_flush(osb
, 0);
1346 osb
->local_alloc_copy
= NULL
;
1348 /* queue to recover orphan slots for all offline slots */
1349 ocfs2_replay_map_set_state(osb
, REPLAY_NEEDED
);
1350 ocfs2_queue_replay_slots(osb
, ORPHAN_NEED_TRUNCATE
);
1351 ocfs2_free_replay_slots(osb
);
1354 void ocfs2_complete_quota_recovery(struct ocfs2_super
*osb
)
1356 if (osb
->quota_rec
) {
1357 ocfs2_queue_recovery_completion(osb
->journal
,
1362 ORPHAN_NEED_TRUNCATE
);
1363 osb
->quota_rec
= NULL
;
1367 static int __ocfs2_recovery_thread(void *arg
)
1369 int status
, node_num
, slot_num
;
1370 struct ocfs2_super
*osb
= arg
;
1371 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
1372 int *rm_quota
= NULL
;
1373 int rm_quota_used
= 0, i
;
1374 struct ocfs2_quota_recovery
*qrec
;
1376 /* Whether the quota supported. */
1377 int quota_enabled
= OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
,
1378 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)
1379 || OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
,
1380 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
);
1382 status
= ocfs2_wait_on_mount(osb
);
1387 if (quota_enabled
) {
1388 rm_quota
= kcalloc(osb
->max_slots
, sizeof(int), GFP_NOFS
);
1395 status
= ocfs2_super_lock(osb
, 1);
1401 status
= ocfs2_compute_replay_slots(osb
);
1405 /* queue recovery for our own slot */
1406 ocfs2_queue_recovery_completion(osb
->journal
, osb
->slot_num
, NULL
,
1407 NULL
, NULL
, ORPHAN_NO_NEED_TRUNCATE
);
1409 spin_lock(&osb
->osb_lock
);
1410 while (rm
->rm_used
) {
1411 /* It's always safe to remove entry zero, as we won't
1412 * clear it until ocfs2_recover_node() has succeeded. */
1413 node_num
= rm
->rm_entries
[0];
1414 spin_unlock(&osb
->osb_lock
);
1415 slot_num
= ocfs2_node_num_to_slot(osb
, node_num
);
1416 trace_ocfs2_recovery_thread_node(node_num
, slot_num
);
1417 if (slot_num
== -ENOENT
) {
1422 /* It is a bit subtle with quota recovery. We cannot do it
1423 * immediately because we have to obtain cluster locks from
1424 * quota files and we also don't want to just skip it because
1425 * then quota usage would be out of sync until some node takes
1426 * the slot. So we remember which nodes need quota recovery
1427 * and when everything else is done, we recover quotas. */
1428 if (quota_enabled
) {
1429 for (i
= 0; i
< rm_quota_used
1430 && rm_quota
[i
] != slot_num
; i
++)
1433 if (i
== rm_quota_used
)
1434 rm_quota
[rm_quota_used
++] = slot_num
;
1437 status
= ocfs2_recover_node(osb
, node_num
, slot_num
);
1440 ocfs2_recovery_map_clear(osb
, node_num
);
1443 "Error %d recovering node %d on device (%u,%u)!\n",
1445 MAJOR(osb
->sb
->s_dev
), MINOR(osb
->sb
->s_dev
));
1446 mlog(ML_ERROR
, "Volume requires unmount.\n");
1449 spin_lock(&osb
->osb_lock
);
1451 spin_unlock(&osb
->osb_lock
);
1452 trace_ocfs2_recovery_thread_end(status
);
1454 /* Refresh all journal recovery generations from disk */
1455 status
= ocfs2_check_journals_nolocks(osb
);
1456 status
= (status
== -EROFS
) ? 0 : status
;
1460 /* Now it is right time to recover quotas... We have to do this under
1461 * superblock lock so that no one can start using the slot (and crash)
1462 * before we recover it */
1463 if (quota_enabled
) {
1464 for (i
= 0; i
< rm_quota_used
; i
++) {
1465 qrec
= ocfs2_begin_quota_recovery(osb
, rm_quota
[i
]);
1467 status
= PTR_ERR(qrec
);
1471 ocfs2_queue_recovery_completion(osb
->journal
,
1474 ORPHAN_NEED_TRUNCATE
);
1478 ocfs2_super_unlock(osb
, 1);
1480 /* queue recovery for offline slots */
1481 ocfs2_queue_replay_slots(osb
, ORPHAN_NEED_TRUNCATE
);
1484 mutex_lock(&osb
->recovery_lock
);
1485 if (!status
&& !ocfs2_recovery_completed(osb
)) {
1486 mutex_unlock(&osb
->recovery_lock
);
1490 ocfs2_free_replay_slots(osb
);
1491 osb
->recovery_thread_task
= NULL
;
1492 mb(); /* sync with ocfs2_recovery_thread_running */
1493 wake_up(&osb
->recovery_event
);
1495 mutex_unlock(&osb
->recovery_lock
);
1500 /* no one is callint kthread_stop() for us so the kthread() api
1501 * requires that we call do_exit(). And it isn't exported, but
1502 * complete_and_exit() seems to be a minimal wrapper around it. */
1503 complete_and_exit(NULL
, status
);
1506 void ocfs2_recovery_thread(struct ocfs2_super
*osb
, int node_num
)
1508 mutex_lock(&osb
->recovery_lock
);
1510 trace_ocfs2_recovery_thread(node_num
, osb
->node_num
,
1511 osb
->disable_recovery
, osb
->recovery_thread_task
,
1512 osb
->disable_recovery
?
1513 -1 : ocfs2_recovery_map_set(osb
, node_num
));
1515 if (osb
->disable_recovery
)
1518 if (osb
->recovery_thread_task
)
1521 osb
->recovery_thread_task
= kthread_run(__ocfs2_recovery_thread
, osb
,
1522 "ocfs2rec-%s", osb
->uuid_str
);
1523 if (IS_ERR(osb
->recovery_thread_task
)) {
1524 mlog_errno((int)PTR_ERR(osb
->recovery_thread_task
));
1525 osb
->recovery_thread_task
= NULL
;
1529 mutex_unlock(&osb
->recovery_lock
);
1530 wake_up(&osb
->recovery_event
);
1533 static int ocfs2_read_journal_inode(struct ocfs2_super
*osb
,
1535 struct buffer_head
**bh
,
1536 struct inode
**ret_inode
)
1538 int status
= -EACCES
;
1539 struct inode
*inode
= NULL
;
1541 BUG_ON(slot_num
>= osb
->max_slots
);
1543 inode
= ocfs2_get_system_file_inode(osb
, JOURNAL_SYSTEM_INODE
,
1545 if (!inode
|| is_bad_inode(inode
)) {
1549 SET_INODE_JOURNAL(inode
);
1551 status
= ocfs2_read_inode_block_full(inode
, bh
, OCFS2_BH_IGNORE_CACHE
);
1561 if (status
|| !ret_inode
)
1569 /* Does the actual journal replay and marks the journal inode as
1570 * clean. Will only replay if the journal inode is marked dirty. */
1571 static int ocfs2_replay_journal(struct ocfs2_super
*osb
,
1578 struct inode
*inode
= NULL
;
1579 struct ocfs2_dinode
*fe
;
1580 journal_t
*journal
= NULL
;
1581 struct buffer_head
*bh
= NULL
;
1584 status
= ocfs2_read_journal_inode(osb
, slot_num
, &bh
, &inode
);
1590 fe
= (struct ocfs2_dinode
*)bh
->b_data
;
1591 slot_reco_gen
= ocfs2_get_recovery_generation(fe
);
1596 * As the fs recovery is asynchronous, there is a small chance that
1597 * another node mounted (and recovered) the slot before the recovery
1598 * thread could get the lock. To handle that, we dirty read the journal
1599 * inode for that slot to get the recovery generation. If it is
1600 * different than what we expected, the slot has been recovered.
1601 * If not, it needs recovery.
1603 if (osb
->slot_recovery_generations
[slot_num
] != slot_reco_gen
) {
1604 trace_ocfs2_replay_journal_recovered(slot_num
,
1605 osb
->slot_recovery_generations
[slot_num
], slot_reco_gen
);
1606 osb
->slot_recovery_generations
[slot_num
] = slot_reco_gen
;
1611 /* Continue with recovery as the journal has not yet been recovered */
1613 status
= ocfs2_inode_lock_full(inode
, &bh
, 1, OCFS2_META_LOCK_RECOVERY
);
1615 trace_ocfs2_replay_journal_lock_err(status
);
1616 if (status
!= -ERESTARTSYS
)
1617 mlog(ML_ERROR
, "Could not lock journal!\n");
1622 fe
= (struct ocfs2_dinode
*) bh
->b_data
;
1624 flags
= le32_to_cpu(fe
->id1
.journal1
.ij_flags
);
1625 slot_reco_gen
= ocfs2_get_recovery_generation(fe
);
1627 if (!(flags
& OCFS2_JOURNAL_DIRTY_FL
)) {
1628 trace_ocfs2_replay_journal_skip(node_num
);
1629 /* Refresh recovery generation for the slot */
1630 osb
->slot_recovery_generations
[slot_num
] = slot_reco_gen
;
1634 /* we need to run complete recovery for offline orphan slots */
1635 ocfs2_replay_map_set_state(osb
, REPLAY_NEEDED
);
1637 printk(KERN_NOTICE
"ocfs2: Begin replay journal (node %d, slot %d) on "\
1638 "device (%u,%u)\n", node_num
, slot_num
, MAJOR(osb
->sb
->s_dev
),
1639 MINOR(osb
->sb
->s_dev
));
1641 OCFS2_I(inode
)->ip_clusters
= le32_to_cpu(fe
->i_clusters
);
1643 status
= ocfs2_force_read_journal(inode
);
1649 journal
= jbd2_journal_init_inode(inode
);
1650 if (journal
== NULL
) {
1651 mlog(ML_ERROR
, "Linux journal layer error\n");
1656 status
= jbd2_journal_load(journal
);
1661 jbd2_journal_destroy(journal
);
1665 ocfs2_clear_journal_error(osb
->sb
, journal
, slot_num
);
1667 /* wipe the journal */
1668 jbd2_journal_lock_updates(journal
);
1669 status
= jbd2_journal_flush(journal
, 0);
1670 jbd2_journal_unlock_updates(journal
);
1674 /* This will mark the node clean */
1675 flags
= le32_to_cpu(fe
->id1
.journal1
.ij_flags
);
1676 flags
&= ~OCFS2_JOURNAL_DIRTY_FL
;
1677 fe
->id1
.journal1
.ij_flags
= cpu_to_le32(flags
);
1679 /* Increment recovery generation to indicate successful recovery */
1680 ocfs2_bump_recovery_generation(fe
);
1681 osb
->slot_recovery_generations
[slot_num
] =
1682 ocfs2_get_recovery_generation(fe
);
1684 ocfs2_compute_meta_ecc(osb
->sb
, bh
->b_data
, &fe
->i_check
);
1685 status
= ocfs2_write_block(osb
, bh
, INODE_CACHE(inode
));
1692 jbd2_journal_destroy(journal
);
1694 printk(KERN_NOTICE
"ocfs2: End replay journal (node %d, slot %d) on "\
1695 "device (%u,%u)\n", node_num
, slot_num
, MAJOR(osb
->sb
->s_dev
),
1696 MINOR(osb
->sb
->s_dev
));
1698 /* drop the lock on this nodes journal */
1700 ocfs2_inode_unlock(inode
, 1);
1709 * Do the most important parts of node recovery:
1710 * - Replay it's journal
1711 * - Stamp a clean local allocator file
1712 * - Stamp a clean truncate log
1713 * - Mark the node clean
1715 * If this function completes without error, a node in OCFS2 can be
1716 * said to have been safely recovered. As a result, failure during the
1717 * second part of a nodes recovery process (local alloc recovery) is
1718 * far less concerning.
1720 static int ocfs2_recover_node(struct ocfs2_super
*osb
,
1721 int node_num
, int slot_num
)
1724 struct ocfs2_dinode
*la_copy
= NULL
;
1725 struct ocfs2_dinode
*tl_copy
= NULL
;
1727 trace_ocfs2_recover_node(node_num
, slot_num
, osb
->node_num
);
1729 /* Should not ever be called to recover ourselves -- in that
1730 * case we should've called ocfs2_journal_load instead. */
1731 BUG_ON(osb
->node_num
== node_num
);
1733 status
= ocfs2_replay_journal(osb
, node_num
, slot_num
);
1735 if (status
== -EBUSY
) {
1736 trace_ocfs2_recover_node_skip(slot_num
, node_num
);
1744 /* Stamp a clean local alloc file AFTER recovering the journal... */
1745 status
= ocfs2_begin_local_alloc_recovery(osb
, slot_num
, &la_copy
);
1751 /* An error from begin_truncate_log_recovery is not
1752 * serious enough to warrant halting the rest of
1754 status
= ocfs2_begin_truncate_log_recovery(osb
, slot_num
, &tl_copy
);
1758 /* Likewise, this would be a strange but ultimately not so
1759 * harmful place to get an error... */
1760 status
= ocfs2_clear_slot(osb
, slot_num
);
1764 /* This will kfree the memory pointed to by la_copy and tl_copy */
1765 ocfs2_queue_recovery_completion(osb
->journal
, slot_num
, la_copy
,
1766 tl_copy
, NULL
, ORPHAN_NEED_TRUNCATE
);
1774 /* Test node liveness by trylocking his journal. If we get the lock,
1775 * we drop it here. Return 0 if we got the lock, -EAGAIN if node is
1776 * still alive (we couldn't get the lock) and < 0 on error. */
1777 static int ocfs2_trylock_journal(struct ocfs2_super
*osb
,
1781 struct inode
*inode
= NULL
;
1783 inode
= ocfs2_get_system_file_inode(osb
, JOURNAL_SYSTEM_INODE
,
1785 if (inode
== NULL
) {
1786 mlog(ML_ERROR
, "access error\n");
1790 if (is_bad_inode(inode
)) {
1791 mlog(ML_ERROR
, "access error (bad inode)\n");
1797 SET_INODE_JOURNAL(inode
);
1799 flags
= OCFS2_META_LOCK_RECOVERY
| OCFS2_META_LOCK_NOQUEUE
;
1800 status
= ocfs2_inode_lock_full(inode
, NULL
, 1, flags
);
1802 if (status
!= -EAGAIN
)
1807 ocfs2_inode_unlock(inode
, 1);
1814 /* Call this underneath ocfs2_super_lock. It also assumes that the
1815 * slot info struct has been updated from disk. */
1816 int ocfs2_mark_dead_nodes(struct ocfs2_super
*osb
)
1818 unsigned int node_num
;
1821 struct buffer_head
*bh
= NULL
;
1822 struct ocfs2_dinode
*di
;
1824 /* This is called with the super block cluster lock, so we
1825 * know that the slot map can't change underneath us. */
1827 for (i
= 0; i
< osb
->max_slots
; i
++) {
1828 /* Read journal inode to get the recovery generation */
1829 status
= ocfs2_read_journal_inode(osb
, i
, &bh
, NULL
);
1834 di
= (struct ocfs2_dinode
*)bh
->b_data
;
1835 gen
= ocfs2_get_recovery_generation(di
);
1839 spin_lock(&osb
->osb_lock
);
1840 osb
->slot_recovery_generations
[i
] = gen
;
1842 trace_ocfs2_mark_dead_nodes(i
,
1843 osb
->slot_recovery_generations
[i
]);
1845 if (i
== osb
->slot_num
) {
1846 spin_unlock(&osb
->osb_lock
);
1850 status
= ocfs2_slot_to_node_num_locked(osb
, i
, &node_num
);
1851 if (status
== -ENOENT
) {
1852 spin_unlock(&osb
->osb_lock
);
1856 if (__ocfs2_recovery_map_test(osb
, node_num
)) {
1857 spin_unlock(&osb
->osb_lock
);
1860 spin_unlock(&osb
->osb_lock
);
1862 /* Ok, we have a slot occupied by another node which
1863 * is not in the recovery map. We trylock his journal
1864 * file here to test if he's alive. */
1865 status
= ocfs2_trylock_journal(osb
, i
);
1867 /* Since we're called from mount, we know that
1868 * the recovery thread can't race us on
1869 * setting / checking the recovery bits. */
1870 ocfs2_recovery_thread(osb
, node_num
);
1871 } else if ((status
< 0) && (status
!= -EAGAIN
)) {
1883 * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some
1884 * randomness to the timeout to minimize multple nodes firing the timer at the
1887 static inline unsigned long ocfs2_orphan_scan_timeout(void)
1891 get_random_bytes(&time
, sizeof(time
));
1892 time
= ORPHAN_SCAN_SCHEDULE_TIMEOUT
+ (time
% 5000);
1893 return msecs_to_jiffies(time
);
1897 * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for
1898 * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This
1899 * is done to catch any orphans that are left over in orphan directories.
1901 * It scans all slots, even ones that are in use. It does so to handle the
1902 * case described below:
1904 * Node 1 has an inode it was using. The dentry went away due to memory
1905 * pressure. Node 1 closes the inode, but it's on the free list. The node
1906 * has the open lock.
1907 * Node 2 unlinks the inode. It grabs the dentry lock to notify others,
1908 * but node 1 has no dentry and doesn't get the message. It trylocks the
1909 * open lock, sees that another node has a PR, and does nothing.
1910 * Later node 2 runs its orphan dir. It igets the inode, trylocks the
1911 * open lock, sees the PR still, and does nothing.
1912 * Basically, we have to trigger an orphan iput on node 1. The only way
1913 * for this to happen is if node 1 runs node 2's orphan dir.
1915 * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT
1916 * seconds. It gets an EX lock on os_lockres and checks sequence number
1917 * stored in LVB. If the sequence number has changed, it means some other
1918 * node has done the scan. This node skips the scan and tracks the
1919 * sequence number. If the sequence number didn't change, it means a scan
1920 * hasn't happened. The node queues a scan and increments the
1921 * sequence number in the LVB.
1923 static void ocfs2_queue_orphan_scan(struct ocfs2_super
*osb
)
1925 struct ocfs2_orphan_scan
*os
;
1929 os
= &osb
->osb_orphan_scan
;
1931 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_INACTIVE
)
1934 trace_ocfs2_queue_orphan_scan_begin(os
->os_count
, os
->os_seqno
,
1935 atomic_read(&os
->os_state
));
1937 status
= ocfs2_orphan_scan_lock(osb
, &seqno
);
1939 if (status
!= -EAGAIN
)
1944 /* Do no queue the tasks if the volume is being umounted */
1945 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_INACTIVE
)
1948 if (os
->os_seqno
!= seqno
) {
1949 os
->os_seqno
= seqno
;
1953 for (i
= 0; i
< osb
->max_slots
; i
++)
1954 ocfs2_queue_recovery_completion(osb
->journal
, i
, NULL
, NULL
,
1955 NULL
, ORPHAN_NO_NEED_TRUNCATE
);
1957 * We queued a recovery on orphan slots, increment the sequence
1958 * number and update LVB so other node will skip the scan for a while
1962 os
->os_scantime
= ktime_get_seconds();
1964 ocfs2_orphan_scan_unlock(osb
, seqno
);
1966 trace_ocfs2_queue_orphan_scan_end(os
->os_count
, os
->os_seqno
,
1967 atomic_read(&os
->os_state
));
1971 /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */
1972 static void ocfs2_orphan_scan_work(struct work_struct
*work
)
1974 struct ocfs2_orphan_scan
*os
;
1975 struct ocfs2_super
*osb
;
1977 os
= container_of(work
, struct ocfs2_orphan_scan
,
1978 os_orphan_scan_work
.work
);
1981 mutex_lock(&os
->os_lock
);
1982 ocfs2_queue_orphan_scan(osb
);
1983 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_ACTIVE
)
1984 queue_delayed_work(osb
->ocfs2_wq
, &os
->os_orphan_scan_work
,
1985 ocfs2_orphan_scan_timeout());
1986 mutex_unlock(&os
->os_lock
);
1989 void ocfs2_orphan_scan_stop(struct ocfs2_super
*osb
)
1991 struct ocfs2_orphan_scan
*os
;
1993 os
= &osb
->osb_orphan_scan
;
1994 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_ACTIVE
) {
1995 atomic_set(&os
->os_state
, ORPHAN_SCAN_INACTIVE
);
1996 mutex_lock(&os
->os_lock
);
1997 cancel_delayed_work(&os
->os_orphan_scan_work
);
1998 mutex_unlock(&os
->os_lock
);
2002 void ocfs2_orphan_scan_init(struct ocfs2_super
*osb
)
2004 struct ocfs2_orphan_scan
*os
;
2006 os
= &osb
->osb_orphan_scan
;
2010 mutex_init(&os
->os_lock
);
2011 INIT_DELAYED_WORK(&os
->os_orphan_scan_work
, ocfs2_orphan_scan_work
);
2014 void ocfs2_orphan_scan_start(struct ocfs2_super
*osb
)
2016 struct ocfs2_orphan_scan
*os
;
2018 os
= &osb
->osb_orphan_scan
;
2019 os
->os_scantime
= ktime_get_seconds();
2020 if (ocfs2_is_hard_readonly(osb
) || ocfs2_mount_local(osb
))
2021 atomic_set(&os
->os_state
, ORPHAN_SCAN_INACTIVE
);
2023 atomic_set(&os
->os_state
, ORPHAN_SCAN_ACTIVE
);
2024 queue_delayed_work(osb
->ocfs2_wq
, &os
->os_orphan_scan_work
,
2025 ocfs2_orphan_scan_timeout());
2029 struct ocfs2_orphan_filldir_priv
{
2030 struct dir_context ctx
;
2032 struct ocfs2_super
*osb
;
2033 enum ocfs2_orphan_reco_type orphan_reco_type
;
2036 static int ocfs2_orphan_filldir(struct dir_context
*ctx
, const char *name
,
2037 int name_len
, loff_t pos
, u64 ino
,
2040 struct ocfs2_orphan_filldir_priv
*p
=
2041 container_of(ctx
, struct ocfs2_orphan_filldir_priv
, ctx
);
2044 if (name_len
== 1 && !strncmp(".", name
, 1))
2046 if (name_len
== 2 && !strncmp("..", name
, 2))
2049 /* do not include dio entry in case of orphan scan */
2050 if ((p
->orphan_reco_type
== ORPHAN_NO_NEED_TRUNCATE
) &&
2051 (!strncmp(name
, OCFS2_DIO_ORPHAN_PREFIX
,
2052 OCFS2_DIO_ORPHAN_PREFIX_LEN
)))
2055 /* Skip bad inodes so that recovery can continue */
2056 iter
= ocfs2_iget(p
->osb
, ino
,
2057 OCFS2_FI_FLAG_ORPHAN_RECOVERY
, 0);
2061 if (!strncmp(name
, OCFS2_DIO_ORPHAN_PREFIX
,
2062 OCFS2_DIO_ORPHAN_PREFIX_LEN
))
2063 OCFS2_I(iter
)->ip_flags
|= OCFS2_INODE_DIO_ORPHAN_ENTRY
;
2065 /* Skip inodes which are already added to recover list, since dio may
2066 * happen concurrently with unlink/rename */
2067 if (OCFS2_I(iter
)->ip_next_orphan
) {
2072 trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter
)->ip_blkno
);
2073 /* No locking is required for the next_orphan queue as there
2074 * is only ever a single process doing orphan recovery. */
2075 OCFS2_I(iter
)->ip_next_orphan
= p
->head
;
2081 static int ocfs2_queue_orphans(struct ocfs2_super
*osb
,
2083 struct inode
**head
,
2084 enum ocfs2_orphan_reco_type orphan_reco_type
)
2087 struct inode
*orphan_dir_inode
= NULL
;
2088 struct ocfs2_orphan_filldir_priv priv
= {
2089 .ctx
.actor
= ocfs2_orphan_filldir
,
2092 .orphan_reco_type
= orphan_reco_type
2095 orphan_dir_inode
= ocfs2_get_system_file_inode(osb
,
2096 ORPHAN_DIR_SYSTEM_INODE
,
2098 if (!orphan_dir_inode
) {
2104 inode_lock(orphan_dir_inode
);
2105 status
= ocfs2_inode_lock(orphan_dir_inode
, NULL
, 0);
2111 status
= ocfs2_dir_foreach(orphan_dir_inode
, &priv
.ctx
);
2120 ocfs2_inode_unlock(orphan_dir_inode
, 0);
2122 inode_unlock(orphan_dir_inode
);
2123 iput(orphan_dir_inode
);
2127 static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super
*osb
,
2132 spin_lock(&osb
->osb_lock
);
2133 ret
= !osb
->osb_orphan_wipes
[slot
];
2134 spin_unlock(&osb
->osb_lock
);
2138 static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super
*osb
,
2141 spin_lock(&osb
->osb_lock
);
2142 /* Mark ourselves such that new processes in delete_inode()
2143 * know to quit early. */
2144 ocfs2_node_map_set_bit(osb
, &osb
->osb_recovering_orphan_dirs
, slot
);
2145 while (osb
->osb_orphan_wipes
[slot
]) {
2146 /* If any processes are already in the middle of an
2147 * orphan wipe on this dir, then we need to wait for
2149 spin_unlock(&osb
->osb_lock
);
2150 wait_event_interruptible(osb
->osb_wipe_event
,
2151 ocfs2_orphan_recovery_can_continue(osb
, slot
));
2152 spin_lock(&osb
->osb_lock
);
2154 spin_unlock(&osb
->osb_lock
);
2157 static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super
*osb
,
2160 ocfs2_node_map_clear_bit(osb
, &osb
->osb_recovering_orphan_dirs
, slot
);
2164 * Orphan recovery. Each mounted node has it's own orphan dir which we
2165 * must run during recovery. Our strategy here is to build a list of
2166 * the inodes in the orphan dir and iget/iput them. The VFS does
2167 * (most) of the rest of the work.
2169 * Orphan recovery can happen at any time, not just mount so we have a
2170 * couple of extra considerations.
2172 * - We grab as many inodes as we can under the orphan dir lock -
2173 * doing iget() outside the orphan dir risks getting a reference on
2175 * - We must be sure not to deadlock with other processes on the
2176 * system wanting to run delete_inode(). This can happen when they go
2177 * to lock the orphan dir and the orphan recovery process attempts to
2178 * iget() inside the orphan dir lock. This can be avoided by
2179 * advertising our state to ocfs2_delete_inode().
2181 static int ocfs2_recover_orphans(struct ocfs2_super
*osb
,
2183 enum ocfs2_orphan_reco_type orphan_reco_type
)
2186 struct inode
*inode
= NULL
;
2188 struct ocfs2_inode_info
*oi
;
2189 struct buffer_head
*di_bh
= NULL
;
2190 struct ocfs2_dinode
*di
= NULL
;
2192 trace_ocfs2_recover_orphans(slot
);
2194 ocfs2_mark_recovering_orphan_dir(osb
, slot
);
2195 ret
= ocfs2_queue_orphans(osb
, slot
, &inode
, orphan_reco_type
);
2196 ocfs2_clear_recovering_orphan_dir(osb
, slot
);
2198 /* Error here should be noted, but we want to continue with as
2199 * many queued inodes as we've got. */
2204 oi
= OCFS2_I(inode
);
2205 trace_ocfs2_recover_orphans_iput(
2206 (unsigned long long)oi
->ip_blkno
);
2208 iter
= oi
->ip_next_orphan
;
2209 oi
->ip_next_orphan
= NULL
;
2211 if (oi
->ip_flags
& OCFS2_INODE_DIO_ORPHAN_ENTRY
) {
2213 ret
= ocfs2_rw_lock(inode
, 1);
2219 * We need to take and drop the inode lock to
2220 * force read inode from disk.
2222 ret
= ocfs2_inode_lock(inode
, &di_bh
, 1);
2228 di
= (struct ocfs2_dinode
*)di_bh
->b_data
;
2230 if (di
->i_flags
& cpu_to_le32(OCFS2_DIO_ORPHANED_FL
)) {
2231 ret
= ocfs2_truncate_file(inode
, di_bh
,
2232 i_size_read(inode
));
2239 ret
= ocfs2_del_inode_from_orphan(osb
, inode
,
2245 ocfs2_inode_unlock(inode
, 1);
2249 ocfs2_rw_unlock(inode
, 1);
2251 inode_unlock(inode
);
2253 /* clear dio flag in ocfs2_inode_info */
2254 oi
->ip_flags
&= ~OCFS2_INODE_DIO_ORPHAN_ENTRY
;
2256 spin_lock(&oi
->ip_lock
);
2257 /* Set the proper information to get us going into
2258 * ocfs2_delete_inode. */
2259 oi
->ip_flags
|= OCFS2_INODE_MAYBE_ORPHANED
;
2260 spin_unlock(&oi
->ip_lock
);
2270 static int __ocfs2_wait_on_mount(struct ocfs2_super
*osb
, int quota
)
2272 /* This check is good because ocfs2 will wait on our recovery
2273 * thread before changing it to something other than MOUNTED
2275 wait_event(osb
->osb_mount_event
,
2276 (!quota
&& atomic_read(&osb
->vol_state
) == VOLUME_MOUNTED
) ||
2277 atomic_read(&osb
->vol_state
) == VOLUME_MOUNTED_QUOTAS
||
2278 atomic_read(&osb
->vol_state
) == VOLUME_DISABLED
);
2280 /* If there's an error on mount, then we may never get to the
2281 * MOUNTED flag, but this is set right before
2282 * dismount_volume() so we can trust it. */
2283 if (atomic_read(&osb
->vol_state
) == VOLUME_DISABLED
) {
2284 trace_ocfs2_wait_on_mount(VOLUME_DISABLED
);
2285 mlog(0, "mount error, exiting!\n");
2292 static int ocfs2_commit_thread(void *arg
)
2295 struct ocfs2_super
*osb
= arg
;
2296 struct ocfs2_journal
*journal
= osb
->journal
;
2298 /* we can trust j_num_trans here because _should_stop() is only set in
2299 * shutdown and nobody other than ourselves should be able to start
2300 * transactions. committing on shutdown might take a few iterations
2301 * as final transactions put deleted inodes on the list */
2302 while (!(kthread_should_stop() &&
2303 atomic_read(&journal
->j_num_trans
) == 0)) {
2305 wait_event_interruptible(osb
->checkpoint_event
,
2306 atomic_read(&journal
->j_num_trans
)
2307 || kthread_should_stop());
2309 status
= ocfs2_commit_cache(osb
);
2311 static unsigned long abort_warn_time
;
2313 /* Warn about this once per minute */
2314 if (printk_timed_ratelimit(&abort_warn_time
, 60*HZ
))
2315 mlog(ML_ERROR
, "status = %d, journal is "
2316 "already aborted.\n", status
);
2318 * After ocfs2_commit_cache() fails, j_num_trans has a
2319 * non-zero value. Sleep here to avoid a busy-wait
2322 msleep_interruptible(1000);
2325 if (kthread_should_stop() && atomic_read(&journal
->j_num_trans
)){
2327 "commit_thread: %u transactions pending on "
2329 atomic_read(&journal
->j_num_trans
));
2336 /* Reads all the journal inodes without taking any cluster locks. Used
2337 * for hard readonly access to determine whether any journal requires
2338 * recovery. Also used to refresh the recovery generation numbers after
2339 * a journal has been recovered by another node.
2341 int ocfs2_check_journals_nolocks(struct ocfs2_super
*osb
)
2345 struct buffer_head
*di_bh
= NULL
;
2346 struct ocfs2_dinode
*di
;
2347 int journal_dirty
= 0;
2349 for(slot
= 0; slot
< osb
->max_slots
; slot
++) {
2350 ret
= ocfs2_read_journal_inode(osb
, slot
, &di_bh
, NULL
);
2356 di
= (struct ocfs2_dinode
*) di_bh
->b_data
;
2358 osb
->slot_recovery_generations
[slot
] =
2359 ocfs2_get_recovery_generation(di
);
2361 if (le32_to_cpu(di
->id1
.journal1
.ij_flags
) &
2362 OCFS2_JOURNAL_DIRTY_FL
)