1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
7 * load/unload driver, mount/dismount volumes
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
12 #include <linux/module.h>
14 #include <linux/types.h>
15 #include <linux/slab.h>
16 #include <linux/highmem.h>
17 #include <linux/init.h>
18 #include <linux/random.h>
19 #include <linux/statfs.h>
20 #include <linux/moduleparam.h>
21 #include <linux/blkdev.h>
22 #include <linux/socket.h>
23 #include <linux/inet.h>
24 #include <linux/parser.h>
25 #include <linux/crc32.h>
26 #include <linux/debugfs.h>
27 #include <linux/mount.h>
28 #include <linux/seq_file.h>
29 #include <linux/quotaops.h>
30 #include <linux/cleancache.h>
31 #include <linux/signal.h>
33 #define CREATE_TRACE_POINTS
34 #include "ocfs2_trace.h"
36 #include <cluster/masklog.h>
40 /* this should be the only file to include a version 1 header */
41 #include "ocfs1_fs_compat.h"
45 #include "blockcheck.h"
48 #include "extent_map.h"
49 #include "heartbeat.h"
52 #include "localalloc.h"
60 #include "refcounttree.h"
63 #include "buffer_head_io.h"
64 #include "filecheck.h"
66 static struct kmem_cache
*ocfs2_inode_cachep
;
67 struct kmem_cache
*ocfs2_dquot_cachep
;
68 struct kmem_cache
*ocfs2_qf_chunk_cachep
;
70 static struct dentry
*ocfs2_debugfs_root
;
72 MODULE_AUTHOR("Oracle");
73 MODULE_LICENSE("GPL");
74 MODULE_DESCRIPTION("OCFS2 cluster file system");
78 unsigned long commit_interval
;
79 unsigned long mount_opt
;
80 unsigned int atime_quantum
;
83 unsigned int resv_level
;
85 char cluster_stack
[OCFS2_STACK_LABEL_LEN
+ 1];
88 static int ocfs2_parse_options(struct super_block
*sb
, char *options
,
89 struct mount_options
*mopt
,
91 static int ocfs2_check_set_options(struct super_block
*sb
,
92 struct mount_options
*options
);
93 static int ocfs2_show_options(struct seq_file
*s
, struct dentry
*root
);
94 static void ocfs2_put_super(struct super_block
*sb
);
95 static int ocfs2_mount_volume(struct super_block
*sb
);
96 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
);
97 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
);
98 static int ocfs2_initialize_mem_caches(void);
99 static void ocfs2_free_mem_caches(void);
100 static void ocfs2_delete_osb(struct ocfs2_super
*osb
);
102 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
);
104 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
);
106 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
);
107 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
);
108 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
);
109 static int ocfs2_check_volume(struct ocfs2_super
*osb
);
110 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
111 struct buffer_head
*bh
,
113 struct ocfs2_blockcheck_stats
*stats
);
114 static int ocfs2_initialize_super(struct super_block
*sb
,
115 struct buffer_head
*bh
,
117 struct ocfs2_blockcheck_stats
*stats
);
118 static int ocfs2_get_sector(struct super_block
*sb
,
119 struct buffer_head
**bh
,
122 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
);
123 static void ocfs2_free_inode(struct inode
*inode
);
124 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
);
125 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
);
126 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
);
128 static struct dquot
**ocfs2_get_dquots(struct inode
*inode
)
130 return OCFS2_I(inode
)->i_dquot
;
133 static const struct super_operations ocfs2_sops
= {
134 .statfs
= ocfs2_statfs
,
135 .alloc_inode
= ocfs2_alloc_inode
,
136 .free_inode
= ocfs2_free_inode
,
137 .drop_inode
= ocfs2_drop_inode
,
138 .evict_inode
= ocfs2_evict_inode
,
139 .sync_fs
= ocfs2_sync_fs
,
140 .put_super
= ocfs2_put_super
,
141 .remount_fs
= ocfs2_remount
,
142 .show_options
= ocfs2_show_options
,
143 .quota_read
= ocfs2_quota_read
,
144 .quota_write
= ocfs2_quota_write
,
145 .get_dquots
= ocfs2_get_dquots
,
172 Opt_coherency_buffered
,
176 Opt_journal_async_commit
,
182 static const match_table_t tokens
= {
183 {Opt_barrier
, "barrier=%u"},
184 {Opt_err_panic
, "errors=panic"},
185 {Opt_err_ro
, "errors=remount-ro"},
187 {Opt_nointr
, "nointr"},
188 {Opt_hb_none
, OCFS2_HB_NONE
},
189 {Opt_hb_local
, OCFS2_HB_LOCAL
},
190 {Opt_hb_global
, OCFS2_HB_GLOBAL
},
191 {Opt_data_ordered
, "data=ordered"},
192 {Opt_data_writeback
, "data=writeback"},
193 {Opt_atime_quantum
, "atime_quantum=%u"},
194 {Opt_slot
, "preferred_slot=%u"},
195 {Opt_commit
, "commit=%u"},
196 {Opt_localalloc
, "localalloc=%d"},
197 {Opt_localflocks
, "localflocks"},
198 {Opt_stack
, "cluster_stack=%s"},
199 {Opt_user_xattr
, "user_xattr"},
200 {Opt_nouser_xattr
, "nouser_xattr"},
201 {Opt_inode64
, "inode64"},
203 {Opt_noacl
, "noacl"},
204 {Opt_usrquota
, "usrquota"},
205 {Opt_grpquota
, "grpquota"},
206 {Opt_coherency_buffered
, "coherency=buffered"},
207 {Opt_coherency_full
, "coherency=full"},
208 {Opt_resv_level
, "resv_level=%u"},
209 {Opt_dir_resv_level
, "dir_resv_level=%u"},
210 {Opt_journal_async_commit
, "journal_async_commit"},
211 {Opt_err_cont
, "errors=continue"},
212 {Opt_nocluster
, "nocluster"},
216 #ifdef CONFIG_DEBUG_FS
217 static int ocfs2_osb_dump(struct ocfs2_super
*osb
, char *buf
, int len
)
219 struct ocfs2_cluster_connection
*cconn
= osb
->cconn
;
220 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
221 struct ocfs2_orphan_scan
*os
= &osb
->osb_orphan_scan
;
225 out
+= scnprintf(buf
+ out
, len
- out
,
226 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
227 "Device", osb
->dev_str
, osb
->uuid_str
,
228 osb
->fs_generation
, osb
->vol_label
);
230 out
+= scnprintf(buf
+ out
, len
- out
,
231 "%10s => State: %d Flags: 0x%lX\n", "Volume",
232 atomic_read(&osb
->vol_state
), osb
->osb_flags
);
234 out
+= scnprintf(buf
+ out
, len
- out
,
235 "%10s => Block: %lu Cluster: %d\n", "Sizes",
236 osb
->sb
->s_blocksize
, osb
->s_clustersize
);
238 out
+= scnprintf(buf
+ out
, len
- out
,
239 "%10s => Compat: 0x%X Incompat: 0x%X "
241 "Features", osb
->s_feature_compat
,
242 osb
->s_feature_incompat
, osb
->s_feature_ro_compat
);
244 out
+= scnprintf(buf
+ out
, len
- out
,
245 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
246 osb
->s_mount_opt
, osb
->s_atime_quantum
);
249 out
+= scnprintf(buf
+ out
, len
- out
,
250 "%10s => Stack: %s Name: %*s "
251 "Version: %d.%d\n", "Cluster",
252 (*osb
->osb_cluster_stack
== '\0' ?
253 "o2cb" : osb
->osb_cluster_stack
),
254 cconn
->cc_namelen
, cconn
->cc_name
,
255 cconn
->cc_version
.pv_major
,
256 cconn
->cc_version
.pv_minor
);
259 spin_lock_irqsave(&osb
->dc_task_lock
, flags
);
260 out
+= scnprintf(buf
+ out
, len
- out
,
261 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
262 "WorkSeq: %lu\n", "DownCnvt",
263 (osb
->dc_task
? task_pid_nr(osb
->dc_task
) : -1),
264 osb
->blocked_lock_count
, osb
->dc_wake_sequence
,
265 osb
->dc_work_sequence
);
266 spin_unlock_irqrestore(&osb
->dc_task_lock
, flags
);
268 spin_lock(&osb
->osb_lock
);
269 out
+= scnprintf(buf
+ out
, len
- out
, "%10s => Pid: %d Nodes:",
271 (osb
->recovery_thread_task
?
272 task_pid_nr(osb
->recovery_thread_task
) : -1));
273 if (rm
->rm_used
== 0)
274 out
+= scnprintf(buf
+ out
, len
- out
, " None\n");
276 for (i
= 0; i
< rm
->rm_used
; i
++)
277 out
+= scnprintf(buf
+ out
, len
- out
, " %d",
279 out
+= scnprintf(buf
+ out
, len
- out
, "\n");
281 spin_unlock(&osb
->osb_lock
);
283 out
+= scnprintf(buf
+ out
, len
- out
,
284 "%10s => Pid: %d Interval: %lu\n", "Commit",
285 (osb
->commit_task
? task_pid_nr(osb
->commit_task
) : -1),
286 osb
->osb_commit_interval
);
288 out
+= scnprintf(buf
+ out
, len
- out
,
289 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
290 "Journal", osb
->journal
->j_state
,
291 osb
->journal
->j_trans_id
,
292 atomic_read(&osb
->journal
->j_num_trans
));
294 out
+= scnprintf(buf
+ out
, len
- out
,
295 "%10s => GlobalAllocs: %d LocalAllocs: %d "
296 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
298 atomic_read(&osb
->alloc_stats
.bitmap_data
),
299 atomic_read(&osb
->alloc_stats
.local_data
),
300 atomic_read(&osb
->alloc_stats
.bg_allocs
),
301 atomic_read(&osb
->alloc_stats
.moves
),
302 atomic_read(&osb
->alloc_stats
.bg_extends
));
304 out
+= scnprintf(buf
+ out
, len
- out
,
305 "%10s => State: %u Descriptor: %llu Size: %u bits "
306 "Default: %u bits\n",
307 "LocalAlloc", osb
->local_alloc_state
,
308 (unsigned long long)osb
->la_last_gd
,
309 osb
->local_alloc_bits
, osb
->local_alloc_default_bits
);
311 spin_lock(&osb
->osb_lock
);
312 out
+= scnprintf(buf
+ out
, len
- out
,
313 "%10s => InodeSlot: %d StolenInodes: %d, "
314 "MetaSlot: %d StolenMeta: %d\n", "Steal",
315 osb
->s_inode_steal_slot
,
316 atomic_read(&osb
->s_num_inodes_stolen
),
317 osb
->s_meta_steal_slot
,
318 atomic_read(&osb
->s_num_meta_stolen
));
319 spin_unlock(&osb
->osb_lock
);
321 out
+= scnprintf(buf
+ out
, len
- out
, "OrphanScan => ");
322 out
+= scnprintf(buf
+ out
, len
- out
, "Local: %u Global: %u ",
323 os
->os_count
, os
->os_seqno
);
324 out
+= scnprintf(buf
+ out
, len
- out
, " Last Scan: ");
325 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_INACTIVE
)
326 out
+= scnprintf(buf
+ out
, len
- out
, "Disabled\n");
328 out
+= scnprintf(buf
+ out
, len
- out
, "%lu seconds ago\n",
329 (unsigned long)(ktime_get_seconds() - os
->os_scantime
));
331 out
+= scnprintf(buf
+ out
, len
- out
, "%10s => %3s %10s\n",
332 "Slots", "Num", "RecoGen");
333 for (i
= 0; i
< osb
->max_slots
; ++i
) {
334 out
+= scnprintf(buf
+ out
, len
- out
,
335 "%10s %c %3d %10d\n",
337 (i
== osb
->slot_num
? '*' : ' '),
338 i
, osb
->slot_recovery_generations
[i
]);
344 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
346 struct ocfs2_super
*osb
= inode
->i_private
;
349 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
353 i_size_write(inode
, ocfs2_osb_dump(osb
, buf
, PAGE_SIZE
));
355 file
->private_data
= buf
;
362 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
364 kfree(file
->private_data
);
368 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
369 size_t nbytes
, loff_t
*ppos
)
371 return simple_read_from_buffer(buf
, nbytes
, ppos
, file
->private_data
,
372 i_size_read(file
->f_mapping
->host
));
375 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
379 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
383 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
384 size_t nbytes
, loff_t
*ppos
)
388 #endif /* CONFIG_DEBUG_FS */
390 static const struct file_operations ocfs2_osb_debug_fops
= {
391 .open
= ocfs2_osb_debug_open
,
392 .release
= ocfs2_debug_release
,
393 .read
= ocfs2_debug_read
,
394 .llseek
= generic_file_llseek
,
397 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
)
401 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
403 if (ocfs2_is_hard_readonly(osb
))
407 status
= ocfs2_flush_truncate_log(osb
);
411 ocfs2_schedule_truncate_log_flush(osb
, 0);
414 if (jbd2_journal_start_commit(osb
->journal
->j_journal
,
417 jbd2_log_wait_commit(osb
->journal
->j_journal
,
423 static int ocfs2_need_system_inode(struct ocfs2_super
*osb
, int ino
)
425 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)
426 && (ino
== USER_QUOTA_SYSTEM_INODE
427 || ino
== LOCAL_USER_QUOTA_SYSTEM_INODE
))
429 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)
430 && (ino
== GROUP_QUOTA_SYSTEM_INODE
431 || ino
== LOCAL_GROUP_QUOTA_SYSTEM_INODE
))
436 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
)
438 struct inode
*new = NULL
;
442 new = ocfs2_iget(osb
, osb
->root_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
444 status
= PTR_ERR(new);
448 osb
->root_inode
= new;
450 new = ocfs2_iget(osb
, osb
->system_dir_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
452 status
= PTR_ERR(new);
456 osb
->sys_root_inode
= new;
458 for (i
= OCFS2_FIRST_ONLINE_SYSTEM_INODE
;
459 i
<= OCFS2_LAST_GLOBAL_SYSTEM_INODE
; i
++) {
460 if (!ocfs2_need_system_inode(osb
, i
))
462 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
464 ocfs2_release_system_inodes(osb
);
465 status
= ocfs2_is_soft_readonly(osb
) ? -EROFS
: -EINVAL
;
467 mlog(ML_ERROR
, "Unable to load system inode %d, "
468 "possibly corrupt fs?", i
);
471 // the array now has one ref, so drop this one
481 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
)
483 struct inode
*new = NULL
;
487 for (i
= OCFS2_LAST_GLOBAL_SYSTEM_INODE
+ 1;
488 i
< NUM_SYSTEM_INODES
;
490 if (!ocfs2_need_system_inode(osb
, i
))
492 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
494 ocfs2_release_system_inodes(osb
);
495 status
= ocfs2_is_soft_readonly(osb
) ? -EROFS
: -EINVAL
;
496 mlog(ML_ERROR
, "status=%d, sysfile=%d, slot=%d\n",
497 status
, i
, osb
->slot_num
);
500 /* the array now has one ref, so drop this one */
510 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
)
515 for (i
= 0; i
< NUM_GLOBAL_SYSTEM_INODES
; i
++) {
516 inode
= osb
->global_system_inodes
[i
];
519 osb
->global_system_inodes
[i
] = NULL
;
523 inode
= osb
->sys_root_inode
;
526 osb
->sys_root_inode
= NULL
;
529 inode
= osb
->root_inode
;
532 osb
->root_inode
= NULL
;
535 if (!osb
->local_system_inodes
)
538 for (i
= 0; i
< NUM_LOCAL_SYSTEM_INODES
* osb
->max_slots
; i
++) {
539 if (osb
->local_system_inodes
[i
]) {
540 iput(osb
->local_system_inodes
[i
]);
541 osb
->local_system_inodes
[i
] = NULL
;
545 kfree(osb
->local_system_inodes
);
546 osb
->local_system_inodes
= NULL
;
549 /* We're allocating fs objects, use GFP_NOFS */
550 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
)
552 struct ocfs2_inode_info
*oi
;
554 oi
= kmem_cache_alloc(ocfs2_inode_cachep
, GFP_NOFS
);
559 oi
->i_datasync_tid
= 0;
560 memset(&oi
->i_dquot
, 0, sizeof(oi
->i_dquot
));
562 jbd2_journal_init_jbd_inode(&oi
->ip_jinode
, &oi
->vfs_inode
);
563 return &oi
->vfs_inode
;
566 static void ocfs2_free_inode(struct inode
*inode
)
568 kmem_cache_free(ocfs2_inode_cachep
, OCFS2_I(inode
));
571 static unsigned long long ocfs2_max_file_offset(unsigned int bbits
,
574 unsigned int bytes
= 1 << cbits
;
575 unsigned int trim
= bytes
;
576 unsigned int bitshift
= 32;
579 * i_size and all block offsets in ocfs2 are always 64 bits
580 * wide. i_clusters is 32 bits, in cluster-sized units. So on
581 * 64 bit platforms, cluster size will be the limiting factor.
584 #if BITS_PER_LONG == 32
585 BUILD_BUG_ON(sizeof(sector_t
) != 8);
587 * We might be limited by page cache size.
589 if (bytes
> PAGE_SIZE
) {
593 * Shift by 31 here so that we don't get larger than
601 * Trim by a whole cluster when we can actually approach the
602 * on-disk limits. Otherwise we can overflow i_clusters when
603 * an extent start is at the max offset.
605 return (((unsigned long long)bytes
) << bitshift
) - trim
;
608 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
)
610 int incompat_features
;
612 struct mount_options parsed_options
;
613 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
618 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 1) ||
619 !ocfs2_check_set_options(sb
, &parsed_options
)) {
624 tmp
= OCFS2_MOUNT_NOCLUSTER
;
625 if ((osb
->s_mount_opt
& tmp
) != (parsed_options
.mount_opt
& tmp
)) {
627 mlog(ML_ERROR
, "Cannot change nocluster option on remount\n");
631 tmp
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
|
633 if ((osb
->s_mount_opt
& tmp
) != (parsed_options
.mount_opt
& tmp
)) {
635 mlog(ML_ERROR
, "Cannot change heartbeat mode on remount\n");
639 if ((osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
) !=
640 (parsed_options
.mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
)) {
642 mlog(ML_ERROR
, "Cannot change data mode on remount\n");
646 /* Probably don't want this on remount; it might
647 * mess with other nodes */
648 if (!(osb
->s_mount_opt
& OCFS2_MOUNT_INODE64
) &&
649 (parsed_options
.mount_opt
& OCFS2_MOUNT_INODE64
)) {
651 mlog(ML_ERROR
, "Cannot enable inode64 on remount\n");
655 /* We're going to/from readonly mode. */
656 if ((bool)(*flags
& SB_RDONLY
) != sb_rdonly(sb
)) {
657 /* Disable quota accounting before remounting RO */
658 if (*flags
& SB_RDONLY
) {
659 ret
= ocfs2_susp_quotas(osb
, 0);
663 /* Lock here so the check of HARD_RO and the potential
664 * setting of SOFT_RO is atomic. */
665 spin_lock(&osb
->osb_lock
);
666 if (osb
->osb_flags
& OCFS2_OSB_HARD_RO
) {
667 mlog(ML_ERROR
, "Remount on readonly device is forbidden.\n");
672 if (*flags
& SB_RDONLY
) {
673 sb
->s_flags
|= SB_RDONLY
;
674 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
676 if (osb
->osb_flags
& OCFS2_OSB_ERROR_FS
) {
677 mlog(ML_ERROR
, "Cannot remount RDWR "
678 "filesystem due to previous errors.\n");
682 incompat_features
= OCFS2_HAS_RO_COMPAT_FEATURE(sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
);
683 if (incompat_features
) {
684 mlog(ML_ERROR
, "Cannot remount RDWR because "
685 "of unsupported optional features "
686 "(%x).\n", incompat_features
);
690 sb
->s_flags
&= ~SB_RDONLY
;
691 osb
->osb_flags
&= ~OCFS2_OSB_SOFT_RO
;
693 trace_ocfs2_remount(sb
->s_flags
, osb
->osb_flags
, *flags
);
695 spin_unlock(&osb
->osb_lock
);
696 /* Enable quota accounting after remounting RW */
697 if (!ret
&& !(*flags
& SB_RDONLY
)) {
698 if (sb_any_quota_suspended(sb
))
699 ret
= ocfs2_susp_quotas(osb
, 1);
701 ret
= ocfs2_enable_quotas(osb
);
703 /* Return back changes... */
704 spin_lock(&osb
->osb_lock
);
705 sb
->s_flags
|= SB_RDONLY
;
706 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
707 spin_unlock(&osb
->osb_lock
);
714 /* Only save off the new mount options in case of a successful
716 osb
->s_mount_opt
= parsed_options
.mount_opt
;
717 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
718 osb
->preferred_slot
= parsed_options
.slot
;
719 if (parsed_options
.commit_interval
)
720 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
722 if (!ocfs2_is_hard_readonly(osb
))
723 ocfs2_set_journal_params(osb
);
725 sb
->s_flags
= (sb
->s_flags
& ~SB_POSIXACL
) |
726 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ?
733 static int ocfs2_sb_probe(struct super_block
*sb
,
734 struct buffer_head
**bh
,
736 struct ocfs2_blockcheck_stats
*stats
)
739 struct ocfs1_vol_disk_hdr
*hdr
;
740 struct ocfs2_dinode
*di
;
746 *sector_size
= bdev_logical_block_size(sb
->s_bdev
);
747 if (*sector_size
> OCFS2_MAX_BLOCKSIZE
) {
748 mlog(ML_ERROR
, "Hardware sector size too large: %d (max=%d)\n",
749 *sector_size
, OCFS2_MAX_BLOCKSIZE
);
754 /* Can this really happen? */
755 if (*sector_size
< OCFS2_MIN_BLOCKSIZE
)
756 *sector_size
= OCFS2_MIN_BLOCKSIZE
;
758 /* check block zero for old format */
759 status
= ocfs2_get_sector(sb
, bh
, 0, *sector_size
);
764 hdr
= (struct ocfs1_vol_disk_hdr
*) (*bh
)->b_data
;
765 if (hdr
->major_version
== OCFS1_MAJOR_VERSION
) {
766 mlog(ML_ERROR
, "incompatible version: %u.%u\n",
767 hdr
->major_version
, hdr
->minor_version
);
770 if (memcmp(hdr
->signature
, OCFS1_VOLUME_SIGNATURE
,
771 strlen(OCFS1_VOLUME_SIGNATURE
)) == 0) {
772 mlog(ML_ERROR
, "incompatible volume signature: %8s\n",
779 mlog(ML_ERROR
, "This is an ocfs v1 filesystem which must be "
780 "upgraded before mounting with ocfs v2\n");
785 * Now check at magic offset for 512, 1024, 2048, 4096
786 * blocksizes. 4096 is the maximum blocksize because it is
787 * the minimum clustersize.
790 for (blksize
= *sector_size
;
791 blksize
<= OCFS2_MAX_BLOCKSIZE
;
793 tmpstat
= ocfs2_get_sector(sb
, bh
,
794 OCFS2_SUPER_BLOCK_BLKNO
,
801 di
= (struct ocfs2_dinode
*) (*bh
)->b_data
;
802 memset(stats
, 0, sizeof(struct ocfs2_blockcheck_stats
));
803 spin_lock_init(&stats
->b_lock
);
804 tmpstat
= ocfs2_verify_volume(di
, *bh
, blksize
, stats
);
809 if (tmpstat
!= -EAGAIN
) {
819 static int ocfs2_verify_heartbeat(struct ocfs2_super
*osb
)
821 u32 hb_enabled
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
;
823 if (osb
->s_mount_opt
& hb_enabled
) {
824 if (ocfs2_mount_local(osb
)) {
825 mlog(ML_ERROR
, "Cannot heartbeat on a locally "
826 "mounted device.\n");
829 if (ocfs2_userspace_stack(osb
)) {
830 mlog(ML_ERROR
, "Userspace stack expected, but "
831 "o2cb heartbeat arguments passed to mount\n");
834 if (((osb
->s_mount_opt
& OCFS2_MOUNT_HB_GLOBAL
) &&
835 !ocfs2_cluster_o2cb_global_heartbeat(osb
)) ||
836 ((osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) &&
837 ocfs2_cluster_o2cb_global_heartbeat(osb
))) {
838 mlog(ML_ERROR
, "Mismatching o2cb heartbeat modes\n");
843 if (!(osb
->s_mount_opt
& hb_enabled
)) {
844 if (!ocfs2_mount_local(osb
) && !ocfs2_is_hard_readonly(osb
) &&
845 !ocfs2_userspace_stack(osb
)) {
846 mlog(ML_ERROR
, "Heartbeat has to be started to mount "
847 "a read-write clustered device.\n");
856 * If we're using a userspace stack, mount should have passed
857 * a name that matches the disk. If not, mount should not
858 * have passed a stack.
860 static int ocfs2_verify_userspace_stack(struct ocfs2_super
*osb
,
861 struct mount_options
*mopt
)
863 if (!ocfs2_userspace_stack(osb
) && mopt
->cluster_stack
[0]) {
865 "cluster stack passed to mount, but this filesystem "
866 "does not support it\n");
870 if (ocfs2_userspace_stack(osb
) &&
871 !(osb
->s_mount_opt
& OCFS2_MOUNT_NOCLUSTER
) &&
872 strncmp(osb
->osb_cluster_stack
, mopt
->cluster_stack
,
873 OCFS2_STACK_LABEL_LEN
)) {
875 "cluster stack passed to mount (\"%s\") does not "
876 "match the filesystem (\"%s\")\n",
878 osb
->osb_cluster_stack
);
885 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
)
888 struct super_block
*sb
= osb
->sb
;
889 unsigned int feature
[OCFS2_MAXQUOTAS
] = {
890 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
891 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
894 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++) {
895 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
898 status
= dquot_resume(sb
, type
);
900 struct ocfs2_mem_dqinfo
*oinfo
;
902 /* Cancel periodic syncing before suspending */
903 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
904 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
905 status
= dquot_suspend(sb
, type
);
911 mlog(ML_ERROR
, "Failed to suspend/unsuspend quotas on "
912 "remount (error = %d).\n", status
);
916 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
)
918 struct inode
*inode
[OCFS2_MAXQUOTAS
] = { NULL
, NULL
};
919 struct super_block
*sb
= osb
->sb
;
920 unsigned int feature
[OCFS2_MAXQUOTAS
] = {
921 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
922 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
923 unsigned int ino
[OCFS2_MAXQUOTAS
] = {
924 LOCAL_USER_QUOTA_SYSTEM_INODE
,
925 LOCAL_GROUP_QUOTA_SYSTEM_INODE
};
929 sb_dqopt(sb
)->flags
|= DQUOT_QUOTA_SYS_FILE
| DQUOT_NEGATIVE_USAGE
;
930 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++) {
931 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
933 inode
[type
] = ocfs2_get_system_file_inode(osb
, ino
[type
],
939 status
= dquot_load_quota_inode(inode
[type
], type
, QFMT_OCFS2
,
940 DQUOT_USAGE_ENABLED
);
945 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++)
949 ocfs2_disable_quotas(osb
);
950 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++)
956 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
)
960 struct super_block
*sb
= osb
->sb
;
961 struct ocfs2_mem_dqinfo
*oinfo
;
963 /* We mostly ignore errors in this function because there's not much
964 * we can do when we see them */
965 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++) {
966 if (!sb_has_quota_loaded(sb
, type
))
968 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
969 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
970 inode
= igrab(sb
->s_dquot
.files
[type
]);
971 /* Turn off quotas. This will remove all dquot structures from
972 * memory and so they will be automatically synced to global
974 dquot_disable(sb
, type
, DQUOT_USAGE_ENABLED
|
975 DQUOT_LIMITS_ENABLED
);
982 static int ocfs2_fill_super(struct super_block
*sb
, void *data
, int silent
)
985 int status
, sector_size
;
986 struct mount_options parsed_options
;
987 struct inode
*inode
= NULL
;
988 struct ocfs2_super
*osb
= NULL
;
989 struct buffer_head
*bh
= NULL
;
991 struct ocfs2_blockcheck_stats stats
;
993 trace_ocfs2_fill_super(sb
, data
, silent
);
995 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 0)) {
997 goto read_super_error
;
1000 /* probe for superblock */
1001 status
= ocfs2_sb_probe(sb
, &bh
, §or_size
, &stats
);
1003 mlog(ML_ERROR
, "superblock probe failed!\n");
1004 goto read_super_error
;
1007 status
= ocfs2_initialize_super(sb
, bh
, sector_size
, &stats
);
1011 goto read_super_error
;
1016 if (!ocfs2_check_set_options(sb
, &parsed_options
)) {
1018 goto read_super_error
;
1020 osb
->s_mount_opt
= parsed_options
.mount_opt
;
1021 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
1022 osb
->preferred_slot
= parsed_options
.slot
;
1023 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
1025 ocfs2_la_set_sizes(osb
, parsed_options
.localalloc_opt
);
1026 osb
->osb_resv_level
= parsed_options
.resv_level
;
1027 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1028 if (parsed_options
.dir_resv_level
== -1)
1029 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1031 osb
->osb_dir_resv_level
= parsed_options
.dir_resv_level
;
1033 status
= ocfs2_verify_userspace_stack(osb
, &parsed_options
);
1035 goto read_super_error
;
1037 sb
->s_magic
= OCFS2_SUPER_MAGIC
;
1039 sb
->s_flags
= (sb
->s_flags
& ~(SB_POSIXACL
| SB_NOSEC
)) |
1040 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ? SB_POSIXACL
: 0);
1042 /* Hard readonly mode only if: bdev_read_only, SB_RDONLY,
1044 if (bdev_read_only(sb
->s_bdev
)) {
1045 if (!sb_rdonly(sb
)) {
1047 mlog(ML_ERROR
, "Readonly device detected but readonly "
1048 "mount was not specified.\n");
1049 goto read_super_error
;
1052 /* You should not be able to start a local heartbeat
1053 * on a readonly device. */
1054 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
1056 mlog(ML_ERROR
, "Local heartbeat specified on readonly "
1058 goto read_super_error
;
1061 status
= ocfs2_check_journals_nolocks(osb
);
1063 if (status
== -EROFS
)
1064 mlog(ML_ERROR
, "Recovery required on readonly "
1065 "file system, but write access is "
1069 goto read_super_error
;
1072 ocfs2_set_ro_flag(osb
, 1);
1074 printk(KERN_NOTICE
"ocfs2: Readonly device (%s) detected. "
1075 "Cluster services will not be used for this mount. "
1076 "Recovery will be skipped.\n", osb
->dev_str
);
1079 if (!ocfs2_is_hard_readonly(osb
)) {
1081 ocfs2_set_ro_flag(osb
, 0);
1084 status
= ocfs2_verify_heartbeat(osb
);
1087 goto read_super_error
;
1090 osb
->osb_debug_root
= debugfs_create_dir(osb
->uuid_str
,
1091 ocfs2_debugfs_root
);
1093 debugfs_create_file("fs_state", S_IFREG
|S_IRUSR
, osb
->osb_debug_root
,
1094 osb
, &ocfs2_osb_debug_fops
);
1096 if (ocfs2_meta_ecc(osb
))
1097 ocfs2_blockcheck_stats_debugfs_install( &osb
->osb_ecc_stats
,
1098 osb
->osb_debug_root
);
1100 status
= ocfs2_mount_volume(sb
);
1102 goto read_super_error
;
1104 if (osb
->root_inode
)
1105 inode
= igrab(osb
->root_inode
);
1110 goto read_super_error
;
1113 root
= d_make_root(inode
);
1117 goto read_super_error
;
1122 ocfs2_complete_mount_recovery(osb
);
1124 osb
->osb_dev_kset
= kset_create_and_add(sb
->s_id
, NULL
,
1126 if (!osb
->osb_dev_kset
) {
1128 mlog(ML_ERROR
, "Unable to create device kset %s.\n", sb
->s_id
);
1129 goto read_super_error
;
1132 /* Create filecheck sysfs related directories/files at
1133 * /sys/fs/ocfs2/<devname>/filecheck */
1134 if (ocfs2_filecheck_create_sysfs(osb
)) {
1136 mlog(ML_ERROR
, "Unable to create filecheck sysfs directory at "
1137 "/sys/fs/ocfs2/%s/filecheck.\n", sb
->s_id
);
1138 goto read_super_error
;
1141 if (ocfs2_mount_local(osb
))
1142 snprintf(nodestr
, sizeof(nodestr
), "local");
1144 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1146 printk(KERN_INFO
"ocfs2: Mounting device (%s) on (node %s, slot %d) "
1147 "with %s data mode.\n",
1148 osb
->dev_str
, nodestr
, osb
->slot_num
,
1149 osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
? "writeback" :
1152 if ((osb
->s_mount_opt
& OCFS2_MOUNT_NOCLUSTER
) &&
1153 !(osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT
))
1154 printk(KERN_NOTICE
"ocfs2: The shared device (%s) is mounted "
1155 "without cluster aware mode.\n", osb
->dev_str
);
1157 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED
);
1158 wake_up(&osb
->osb_mount_event
);
1160 /* Now we can initialize quotas because we can afford to wait
1161 * for cluster locks recovery now. That also means that truncation
1162 * log recovery can happen but that waits for proper quota setup */
1163 if (!sb_rdonly(sb
)) {
1164 status
= ocfs2_enable_quotas(osb
);
1166 /* We have to err-out specially here because
1167 * s_root is already set */
1169 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1170 wake_up(&osb
->osb_mount_event
);
1175 ocfs2_complete_quota_recovery(osb
);
1177 /* Now we wake up again for processes waiting for quotas */
1178 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED_QUOTAS
);
1179 wake_up(&osb
->osb_mount_event
);
1181 /* Start this when the mount is almost sure of being successful */
1182 ocfs2_orphan_scan_start(osb
);
1193 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1194 wake_up(&osb
->osb_mount_event
);
1195 ocfs2_dismount_volume(sb
, 1);
1201 static struct dentry
*ocfs2_mount(struct file_system_type
*fs_type
,
1203 const char *dev_name
,
1206 return mount_bdev(fs_type
, flags
, dev_name
, data
, ocfs2_fill_super
);
1209 static struct file_system_type ocfs2_fs_type
= {
1210 .owner
= THIS_MODULE
,
1212 .mount
= ocfs2_mount
,
1213 .kill_sb
= kill_block_super
,
1214 .fs_flags
= FS_REQUIRES_DEV
|FS_RENAME_DOES_D_MOVE
,
1217 MODULE_ALIAS_FS("ocfs2");
1219 static int ocfs2_check_set_options(struct super_block
*sb
,
1220 struct mount_options
*options
)
1222 if (options
->mount_opt
& OCFS2_MOUNT_USRQUOTA
&&
1223 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1224 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)) {
1225 mlog(ML_ERROR
, "User quotas were requested, but this "
1226 "filesystem does not have the feature enabled.\n");
1229 if (options
->mount_opt
& OCFS2_MOUNT_GRPQUOTA
&&
1230 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1231 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)) {
1232 mlog(ML_ERROR
, "Group quotas were requested, but this "
1233 "filesystem does not have the feature enabled.\n");
1236 if (options
->mount_opt
& OCFS2_MOUNT_POSIX_ACL
&&
1237 !OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
)) {
1238 mlog(ML_ERROR
, "ACL support requested but extended attributes "
1239 "feature is not enabled\n");
1242 /* No ACL setting specified? Use XATTR feature... */
1243 if (!(options
->mount_opt
& (OCFS2_MOUNT_POSIX_ACL
|
1244 OCFS2_MOUNT_NO_POSIX_ACL
))) {
1245 if (OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
))
1246 options
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1248 options
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1253 static int ocfs2_parse_options(struct super_block
*sb
,
1255 struct mount_options
*mopt
,
1258 int status
, user_stack
= 0;
1262 substring_t args
[MAX_OPT_ARGS
];
1264 trace_ocfs2_parse_options(is_remount
, options
? options
: "(none)");
1266 mopt
->commit_interval
= 0;
1267 mopt
->mount_opt
= OCFS2_MOUNT_NOINTR
;
1268 mopt
->atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
1269 mopt
->slot
= OCFS2_INVALID_SLOT
;
1270 mopt
->localalloc_opt
= -1;
1271 mopt
->cluster_stack
[0] = '\0';
1272 mopt
->resv_level
= OCFS2_DEFAULT_RESV_LEVEL
;
1273 mopt
->dir_resv_level
= -1;
1280 while ((p
= strsep(&options
, ",")) != NULL
) {
1284 token
= match_token(p
, tokens
, args
);
1287 mopt
->mount_opt
|= OCFS2_MOUNT_HB_LOCAL
;
1290 mopt
->mount_opt
|= OCFS2_MOUNT_HB_NONE
;
1293 mopt
->mount_opt
|= OCFS2_MOUNT_HB_GLOBAL
;
1296 if (match_int(&args
[0], &option
)) {
1301 mopt
->mount_opt
|= OCFS2_MOUNT_BARRIER
;
1303 mopt
->mount_opt
&= ~OCFS2_MOUNT_BARRIER
;
1306 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOINTR
;
1309 mopt
->mount_opt
|= OCFS2_MOUNT_NOINTR
;
1312 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_CONT
;
1313 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_ROFS
;
1314 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
1317 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_CONT
;
1318 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1319 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_ROFS
;
1322 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_ROFS
;
1323 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1324 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_CONT
;
1326 case Opt_data_ordered
:
1327 mopt
->mount_opt
&= ~OCFS2_MOUNT_DATA_WRITEBACK
;
1329 case Opt_data_writeback
:
1330 mopt
->mount_opt
|= OCFS2_MOUNT_DATA_WRITEBACK
;
1332 case Opt_user_xattr
:
1333 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOUSERXATTR
;
1335 case Opt_nouser_xattr
:
1336 mopt
->mount_opt
|= OCFS2_MOUNT_NOUSERXATTR
;
1338 case Opt_atime_quantum
:
1339 if (match_int(&args
[0], &option
)) {
1344 mopt
->atime_quantum
= option
;
1347 if (match_int(&args
[0], &option
)) {
1352 mopt
->slot
= (u16
)option
;
1355 if (match_int(&args
[0], &option
)) {
1362 option
= JBD2_DEFAULT_MAX_COMMIT_AGE
;
1363 mopt
->commit_interval
= HZ
* option
;
1365 case Opt_localalloc
:
1366 if (match_int(&args
[0], &option
)) {
1371 mopt
->localalloc_opt
= option
;
1373 case Opt_localflocks
:
1375 * Changing this during remount could race
1376 * flock() requests, or "unbalance" existing
1377 * ones (e.g., a lock is taken in one mode but
1378 * dropped in the other). If users care enough
1379 * to flip locking modes during remount, we
1380 * could add a "local" flag to individual
1381 * flock structures for proper tracking of
1385 mopt
->mount_opt
|= OCFS2_MOUNT_LOCALFLOCKS
;
1388 /* Check both that the option we were passed
1389 * is of the right length and that it is a proper
1390 * string of the right length.
1392 if (((args
[0].to
- args
[0].from
) !=
1393 OCFS2_STACK_LABEL_LEN
) ||
1394 (strnlen(args
[0].from
,
1395 OCFS2_STACK_LABEL_LEN
) !=
1396 OCFS2_STACK_LABEL_LEN
)) {
1398 "Invalid cluster_stack option\n");
1402 memcpy(mopt
->cluster_stack
, args
[0].from
,
1403 OCFS2_STACK_LABEL_LEN
);
1404 mopt
->cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
1406 * Open code the memcmp here as we don't have
1408 * ocfs2_userspace_stack().
1410 if (memcmp(mopt
->cluster_stack
,
1411 OCFS2_CLASSIC_CLUSTER_STACK
,
1412 OCFS2_STACK_LABEL_LEN
))
1416 mopt
->mount_opt
|= OCFS2_MOUNT_INODE64
;
1419 mopt
->mount_opt
|= OCFS2_MOUNT_USRQUOTA
;
1422 mopt
->mount_opt
|= OCFS2_MOUNT_GRPQUOTA
;
1424 case Opt_coherency_buffered
:
1425 mopt
->mount_opt
|= OCFS2_MOUNT_COHERENCY_BUFFERED
;
1427 case Opt_coherency_full
:
1428 mopt
->mount_opt
&= ~OCFS2_MOUNT_COHERENCY_BUFFERED
;
1431 mopt
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1432 mopt
->mount_opt
&= ~OCFS2_MOUNT_NO_POSIX_ACL
;
1435 mopt
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1436 mopt
->mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
1438 case Opt_resv_level
:
1441 if (match_int(&args
[0], &option
)) {
1445 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1446 option
< OCFS2_MAX_RESV_LEVEL
)
1447 mopt
->resv_level
= option
;
1449 case Opt_dir_resv_level
:
1452 if (match_int(&args
[0], &option
)) {
1456 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1457 option
< OCFS2_MAX_RESV_LEVEL
)
1458 mopt
->dir_resv_level
= option
;
1460 case Opt_journal_async_commit
:
1461 mopt
->mount_opt
|= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT
;
1464 mopt
->mount_opt
|= OCFS2_MOUNT_NOCLUSTER
;
1468 "Unrecognized mount option \"%s\" "
1469 "or missing value\n", p
);
1475 if (user_stack
== 0) {
1476 /* Ensure only one heartbeat mode */
1477 tmp
= mopt
->mount_opt
& (OCFS2_MOUNT_HB_LOCAL
|
1478 OCFS2_MOUNT_HB_GLOBAL
|
1479 OCFS2_MOUNT_HB_NONE
);
1480 if (hweight32(tmp
) != 1) {
1481 mlog(ML_ERROR
, "Invalid heartbeat mount options\n");
1493 static int ocfs2_show_options(struct seq_file
*s
, struct dentry
*root
)
1495 struct ocfs2_super
*osb
= OCFS2_SB(root
->d_sb
);
1496 unsigned long opts
= osb
->s_mount_opt
;
1497 unsigned int local_alloc_megs
;
1499 if (opts
& (OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
)) {
1500 seq_printf(s
, ",_netdev");
1501 if (opts
& OCFS2_MOUNT_HB_LOCAL
)
1502 seq_printf(s
, ",%s", OCFS2_HB_LOCAL
);
1504 seq_printf(s
, ",%s", OCFS2_HB_GLOBAL
);
1506 seq_printf(s
, ",%s", OCFS2_HB_NONE
);
1508 if (opts
& OCFS2_MOUNT_NOINTR
)
1509 seq_printf(s
, ",nointr");
1511 if (opts
& OCFS2_MOUNT_DATA_WRITEBACK
)
1512 seq_printf(s
, ",data=writeback");
1514 seq_printf(s
, ",data=ordered");
1516 if (opts
& OCFS2_MOUNT_BARRIER
)
1517 seq_printf(s
, ",barrier=1");
1519 if (opts
& OCFS2_MOUNT_ERRORS_PANIC
)
1520 seq_printf(s
, ",errors=panic");
1521 else if (opts
& OCFS2_MOUNT_ERRORS_CONT
)
1522 seq_printf(s
, ",errors=continue");
1524 seq_printf(s
, ",errors=remount-ro");
1526 if (osb
->preferred_slot
!= OCFS2_INVALID_SLOT
)
1527 seq_printf(s
, ",preferred_slot=%d", osb
->preferred_slot
);
1529 seq_printf(s
, ",atime_quantum=%u", osb
->s_atime_quantum
);
1531 if (osb
->osb_commit_interval
)
1532 seq_printf(s
, ",commit=%u",
1533 (unsigned) (osb
->osb_commit_interval
/ HZ
));
1535 local_alloc_megs
= osb
->local_alloc_bits
>> (20 - osb
->s_clustersize_bits
);
1536 if (local_alloc_megs
!= ocfs2_la_default_mb(osb
))
1537 seq_printf(s
, ",localalloc=%d", local_alloc_megs
);
1539 if (opts
& OCFS2_MOUNT_LOCALFLOCKS
)
1540 seq_printf(s
, ",localflocks,");
1542 if (osb
->osb_cluster_stack
[0])
1543 seq_show_option_n(s
, "cluster_stack", osb
->osb_cluster_stack
,
1544 OCFS2_STACK_LABEL_LEN
);
1545 if (opts
& OCFS2_MOUNT_USRQUOTA
)
1546 seq_printf(s
, ",usrquota");
1547 if (opts
& OCFS2_MOUNT_GRPQUOTA
)
1548 seq_printf(s
, ",grpquota");
1550 if (opts
& OCFS2_MOUNT_COHERENCY_BUFFERED
)
1551 seq_printf(s
, ",coherency=buffered");
1553 seq_printf(s
, ",coherency=full");
1555 if (opts
& OCFS2_MOUNT_NOUSERXATTR
)
1556 seq_printf(s
, ",nouser_xattr");
1558 seq_printf(s
, ",user_xattr");
1560 if (opts
& OCFS2_MOUNT_INODE64
)
1561 seq_printf(s
, ",inode64");
1563 if (opts
& OCFS2_MOUNT_POSIX_ACL
)
1564 seq_printf(s
, ",acl");
1566 seq_printf(s
, ",noacl");
1568 if (osb
->osb_resv_level
!= OCFS2_DEFAULT_RESV_LEVEL
)
1569 seq_printf(s
, ",resv_level=%d", osb
->osb_resv_level
);
1571 if (osb
->osb_dir_resv_level
!= osb
->osb_resv_level
)
1572 seq_printf(s
, ",dir_resv_level=%d", osb
->osb_resv_level
);
1574 if (opts
& OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT
)
1575 seq_printf(s
, ",journal_async_commit");
1577 if (opts
& OCFS2_MOUNT_NOCLUSTER
)
1578 seq_printf(s
, ",nocluster");
1583 static int __init
ocfs2_init(void)
1587 status
= init_ocfs2_uptodate_cache();
1591 status
= ocfs2_initialize_mem_caches();
1595 ocfs2_debugfs_root
= debugfs_create_dir("ocfs2", NULL
);
1597 ocfs2_set_locking_protocol();
1599 status
= register_quota_format(&ocfs2_quota_format
);
1602 status
= register_filesystem(&ocfs2_fs_type
);
1606 unregister_quota_format(&ocfs2_quota_format
);
1608 debugfs_remove(ocfs2_debugfs_root
);
1609 ocfs2_free_mem_caches();
1611 exit_ocfs2_uptodate_cache();
1617 static void __exit
ocfs2_exit(void)
1619 unregister_quota_format(&ocfs2_quota_format
);
1621 debugfs_remove(ocfs2_debugfs_root
);
1623 ocfs2_free_mem_caches();
1625 unregister_filesystem(&ocfs2_fs_type
);
1627 exit_ocfs2_uptodate_cache();
1630 static void ocfs2_put_super(struct super_block
*sb
)
1632 trace_ocfs2_put_super(sb
);
1634 ocfs2_sync_blockdev(sb
);
1635 ocfs2_dismount_volume(sb
, 0);
1638 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1640 struct ocfs2_super
*osb
;
1641 u32 numbits
, freebits
;
1643 struct ocfs2_dinode
*bm_lock
;
1644 struct buffer_head
*bh
= NULL
;
1645 struct inode
*inode
= NULL
;
1647 trace_ocfs2_statfs(dentry
->d_sb
, buf
);
1649 osb
= OCFS2_SB(dentry
->d_sb
);
1651 inode
= ocfs2_get_system_file_inode(osb
,
1652 GLOBAL_BITMAP_SYSTEM_INODE
,
1653 OCFS2_INVALID_SLOT
);
1655 mlog(ML_ERROR
, "failed to get bitmap inode\n");
1660 status
= ocfs2_inode_lock(inode
, &bh
, 0);
1666 bm_lock
= (struct ocfs2_dinode
*) bh
->b_data
;
1668 numbits
= le32_to_cpu(bm_lock
->id1
.bitmap1
.i_total
);
1669 freebits
= numbits
- le32_to_cpu(bm_lock
->id1
.bitmap1
.i_used
);
1671 buf
->f_type
= OCFS2_SUPER_MAGIC
;
1672 buf
->f_bsize
= dentry
->d_sb
->s_blocksize
;
1673 buf
->f_namelen
= OCFS2_MAX_FILENAME_LEN
;
1674 buf
->f_blocks
= ((sector_t
) numbits
) *
1675 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1676 buf
->f_bfree
= ((sector_t
) freebits
) *
1677 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1678 buf
->f_bavail
= buf
->f_bfree
;
1679 buf
->f_files
= numbits
;
1680 buf
->f_ffree
= freebits
;
1681 buf
->f_fsid
.val
[0] = crc32_le(0, osb
->uuid_str
, OCFS2_VOL_UUID_LEN
)
1683 buf
->f_fsid
.val
[1] = crc32_le(0, osb
->uuid_str
+ OCFS2_VOL_UUID_LEN
,
1684 OCFS2_VOL_UUID_LEN
) & 0xFFFFFFFFUL
;
1688 ocfs2_inode_unlock(inode
, 0);
1699 static void ocfs2_inode_init_once(void *data
)
1701 struct ocfs2_inode_info
*oi
= data
;
1704 oi
->ip_open_count
= 0;
1705 spin_lock_init(&oi
->ip_lock
);
1706 ocfs2_extent_map_init(&oi
->vfs_inode
);
1707 INIT_LIST_HEAD(&oi
->ip_io_markers
);
1708 INIT_LIST_HEAD(&oi
->ip_unwritten_list
);
1709 oi
->ip_dir_start_lookup
= 0;
1710 init_rwsem(&oi
->ip_alloc_sem
);
1711 init_rwsem(&oi
->ip_xattr_sem
);
1712 mutex_init(&oi
->ip_io_mutex
);
1714 oi
->ip_blkno
= 0ULL;
1715 oi
->ip_clusters
= 0;
1716 oi
->ip_next_orphan
= NULL
;
1718 ocfs2_resv_init_once(&oi
->ip_la_data_resv
);
1720 ocfs2_lock_res_init_once(&oi
->ip_rw_lockres
);
1721 ocfs2_lock_res_init_once(&oi
->ip_inode_lockres
);
1722 ocfs2_lock_res_init_once(&oi
->ip_open_lockres
);
1724 ocfs2_metadata_cache_init(INODE_CACHE(&oi
->vfs_inode
),
1725 &ocfs2_inode_caching_ops
);
1727 inode_init_once(&oi
->vfs_inode
);
1730 static int ocfs2_initialize_mem_caches(void)
1732 ocfs2_inode_cachep
= kmem_cache_create("ocfs2_inode_cache",
1733 sizeof(struct ocfs2_inode_info
),
1735 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1736 SLAB_MEM_SPREAD
|SLAB_ACCOUNT
),
1737 ocfs2_inode_init_once
);
1738 ocfs2_dquot_cachep
= kmem_cache_create("ocfs2_dquot_cache",
1739 sizeof(struct ocfs2_dquot
),
1741 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1744 ocfs2_qf_chunk_cachep
= kmem_cache_create("ocfs2_qf_chunk_cache",
1745 sizeof(struct ocfs2_quota_chunk
),
1747 (SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
),
1749 if (!ocfs2_inode_cachep
|| !ocfs2_dquot_cachep
||
1750 !ocfs2_qf_chunk_cachep
) {
1751 kmem_cache_destroy(ocfs2_inode_cachep
);
1752 kmem_cache_destroy(ocfs2_dquot_cachep
);
1753 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1760 static void ocfs2_free_mem_caches(void)
1763 * Make sure all delayed rcu free inodes are flushed before we
1767 kmem_cache_destroy(ocfs2_inode_cachep
);
1768 ocfs2_inode_cachep
= NULL
;
1770 kmem_cache_destroy(ocfs2_dquot_cachep
);
1771 ocfs2_dquot_cachep
= NULL
;
1773 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1774 ocfs2_qf_chunk_cachep
= NULL
;
1777 static int ocfs2_get_sector(struct super_block
*sb
,
1778 struct buffer_head
**bh
,
1782 if (!sb_set_blocksize(sb
, sect_size
)) {
1783 mlog(ML_ERROR
, "unable to set blocksize\n");
1787 *bh
= sb_getblk(sb
, block
);
1789 mlog_errno(-ENOMEM
);
1793 if (!buffer_dirty(*bh
))
1794 clear_buffer_uptodate(*bh
);
1796 ll_rw_block(REQ_OP_READ
, 0, 1, bh
);
1797 wait_on_buffer(*bh
);
1798 if (!buffer_uptodate(*bh
)) {
1808 static int ocfs2_mount_volume(struct super_block
*sb
)
1811 int unlock_super
= 0;
1812 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1814 if (ocfs2_is_hard_readonly(osb
))
1817 mutex_init(&osb
->obs_trim_fs_mutex
);
1819 status
= ocfs2_dlm_init(osb
);
1822 if (status
== -EBADR
&& ocfs2_userspace_stack(osb
))
1823 mlog(ML_ERROR
, "couldn't mount because cluster name on"
1824 " disk does not match the running cluster name.\n");
1828 status
= ocfs2_super_lock(osb
, 1);
1835 /* This will load up the node map and add ourselves to it. */
1836 status
= ocfs2_find_slot(osb
);
1842 /* load all node-local system inodes */
1843 status
= ocfs2_init_local_system_inodes(osb
);
1849 status
= ocfs2_check_volume(osb
);
1855 status
= ocfs2_truncate_log_init(osb
);
1861 ocfs2_super_unlock(osb
, 1);
1866 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
)
1868 int tmp
, hangup_needed
= 0;
1869 struct ocfs2_super
*osb
= NULL
;
1872 trace_ocfs2_dismount_volume(sb
);
1878 /* Remove file check sysfs related directores/files,
1879 * and wait for the pending file check operations */
1880 ocfs2_filecheck_remove_sysfs(osb
);
1882 kset_unregister(osb
->osb_dev_kset
);
1884 /* Orphan scan should be stopped as early as possible */
1885 ocfs2_orphan_scan_stop(osb
);
1887 ocfs2_disable_quotas(osb
);
1889 /* All dquots should be freed by now */
1890 WARN_ON(!llist_empty(&osb
->dquot_drop_list
));
1891 /* Wait for worker to be done with the work structure in osb */
1892 cancel_work_sync(&osb
->dquot_drop_work
);
1894 ocfs2_shutdown_local_alloc(osb
);
1896 ocfs2_truncate_log_shutdown(osb
);
1898 /* This will disable recovery and flush any recovery work. */
1899 ocfs2_recovery_exit(osb
);
1901 ocfs2_journal_shutdown(osb
);
1903 ocfs2_sync_blockdev(sb
);
1905 ocfs2_purge_refcount_trees(osb
);
1907 /* No cluster connection means we've failed during mount, so skip
1908 * all the steps which depended on that to complete. */
1910 tmp
= ocfs2_super_lock(osb
, 1);
1917 if (osb
->slot_num
!= OCFS2_INVALID_SLOT
)
1918 ocfs2_put_slot(osb
);
1921 ocfs2_super_unlock(osb
, 1);
1923 ocfs2_release_system_inodes(osb
);
1926 * If we're dismounting due to mount error, mount.ocfs2 will clean
1927 * up heartbeat. If we're a local mount, there is no heartbeat.
1928 * If we failed before we got a uuid_str yet, we can't stop
1929 * heartbeat. Otherwise, do it.
1931 if (!mnt_err
&& !ocfs2_mount_local(osb
) && osb
->uuid_str
&&
1932 !ocfs2_is_hard_readonly(osb
))
1936 ocfs2_dlm_shutdown(osb
, hangup_needed
);
1938 ocfs2_blockcheck_stats_debugfs_remove(&osb
->osb_ecc_stats
);
1939 debugfs_remove_recursive(osb
->osb_debug_root
);
1942 ocfs2_cluster_hangup(osb
->uuid_str
, strlen(osb
->uuid_str
));
1944 atomic_set(&osb
->vol_state
, VOLUME_DISMOUNTED
);
1946 if (ocfs2_mount_local(osb
))
1947 snprintf(nodestr
, sizeof(nodestr
), "local");
1949 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1951 printk(KERN_INFO
"ocfs2: Unmounting device (%s) on (node %s)\n",
1952 osb
->dev_str
, nodestr
);
1954 ocfs2_delete_osb(osb
);
1957 sb
->s_fs_info
= NULL
;
1960 static int ocfs2_setup_osb_uuid(struct ocfs2_super
*osb
, const unsigned char *uuid
,
1961 unsigned uuid_bytes
)
1966 BUG_ON(uuid_bytes
!= OCFS2_VOL_UUID_LEN
);
1968 osb
->uuid_str
= kzalloc(OCFS2_VOL_UUID_LEN
* 2 + 1, GFP_KERNEL
);
1969 if (osb
->uuid_str
== NULL
)
1972 for (i
= 0, ptr
= osb
->uuid_str
; i
< OCFS2_VOL_UUID_LEN
; i
++) {
1973 /* print with null */
1974 ret
= snprintf(ptr
, 3, "%02X", uuid
[i
]);
1975 if (ret
!= 2) /* drop super cleans up */
1977 /* then only advance past the last char */
1984 /* Make sure entire volume is addressable by our journal. Requires
1985 osb_clusters_at_boot to be valid and for the journal to have been
1986 initialized by ocfs2_journal_init(). */
1987 static int ocfs2_journal_addressable(struct ocfs2_super
*osb
)
1991 ocfs2_clusters_to_blocks(osb
->sb
,
1992 osb
->osb_clusters_at_boot
) - 1;
1994 /* 32-bit block number is always OK. */
1995 if (max_block
<= (u32
)~0ULL)
1998 /* Volume is "huge", so see if our journal is new enough to
2000 if (!(OCFS2_HAS_COMPAT_FEATURE(osb
->sb
,
2001 OCFS2_FEATURE_COMPAT_JBD2_SB
) &&
2002 jbd2_journal_check_used_features(osb
->journal
->j_journal
, 0, 0,
2003 JBD2_FEATURE_INCOMPAT_64BIT
))) {
2004 mlog(ML_ERROR
, "The journal cannot address the entire volume. "
2005 "Enable the 'block64' journal option with tunefs.ocfs2");
2014 static int ocfs2_initialize_super(struct super_block
*sb
,
2015 struct buffer_head
*bh
,
2017 struct ocfs2_blockcheck_stats
*stats
)
2020 int i
, cbits
, bbits
;
2021 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*)bh
->b_data
;
2022 struct inode
*inode
= NULL
;
2023 struct ocfs2_journal
*journal
;
2024 struct ocfs2_super
*osb
;
2027 osb
= kzalloc(sizeof(struct ocfs2_super
), GFP_KERNEL
);
2034 sb
->s_fs_info
= osb
;
2035 sb
->s_op
= &ocfs2_sops
;
2036 sb
->s_d_op
= &ocfs2_dentry_ops
;
2037 sb
->s_export_op
= &ocfs2_export_ops
;
2038 sb
->s_qcop
= &dquot_quotactl_sysfile_ops
;
2039 sb
->dq_op
= &ocfs2_quota_operations
;
2040 sb
->s_quota_types
= QTYPE_MASK_USR
| QTYPE_MASK_GRP
;
2041 sb
->s_xattr
= ocfs2_xattr_handlers
;
2042 sb
->s_time_gran
= 1;
2043 sb
->s_flags
|= SB_NOATIME
;
2044 /* this is needed to support O_LARGEFILE */
2045 cbits
= le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2046 bbits
= le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
);
2047 sb
->s_maxbytes
= ocfs2_max_file_offset(bbits
, cbits
);
2048 memcpy(&sb
->s_uuid
, di
->id2
.i_super
.s_uuid
,
2049 sizeof(di
->id2
.i_super
.s_uuid
));
2051 osb
->osb_dx_mask
= (1 << (cbits
- bbits
)) - 1;
2053 for (i
= 0; i
< 3; i
++)
2054 osb
->osb_dx_seed
[i
] = le32_to_cpu(di
->id2
.i_super
.s_dx_seed
[i
]);
2055 osb
->osb_dx_seed
[3] = le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2058 osb
->s_sectsize_bits
= blksize_bits(sector_size
);
2059 BUG_ON(!osb
->s_sectsize_bits
);
2061 spin_lock_init(&osb
->dc_task_lock
);
2062 init_waitqueue_head(&osb
->dc_event
);
2063 osb
->dc_work_sequence
= 0;
2064 osb
->dc_wake_sequence
= 0;
2065 INIT_LIST_HEAD(&osb
->blocked_lock_list
);
2066 osb
->blocked_lock_count
= 0;
2067 spin_lock_init(&osb
->osb_lock
);
2068 spin_lock_init(&osb
->osb_xattr_lock
);
2069 ocfs2_init_steal_slots(osb
);
2071 mutex_init(&osb
->system_file_mutex
);
2073 atomic_set(&osb
->alloc_stats
.moves
, 0);
2074 atomic_set(&osb
->alloc_stats
.local_data
, 0);
2075 atomic_set(&osb
->alloc_stats
.bitmap_data
, 0);
2076 atomic_set(&osb
->alloc_stats
.bg_allocs
, 0);
2077 atomic_set(&osb
->alloc_stats
.bg_extends
, 0);
2079 /* Copy the blockcheck stats from the superblock probe */
2080 osb
->osb_ecc_stats
= *stats
;
2082 ocfs2_init_node_maps(osb
);
2084 snprintf(osb
->dev_str
, sizeof(osb
->dev_str
), "%u,%u",
2085 MAJOR(osb
->sb
->s_dev
), MINOR(osb
->sb
->s_dev
));
2087 osb
->max_slots
= le16_to_cpu(di
->id2
.i_super
.s_max_slots
);
2088 if (osb
->max_slots
> OCFS2_MAX_SLOTS
|| osb
->max_slots
== 0) {
2089 mlog(ML_ERROR
, "Invalid number of node slots (%u)\n",
2095 ocfs2_orphan_scan_init(osb
);
2097 status
= ocfs2_recovery_init(osb
);
2099 mlog(ML_ERROR
, "Unable to initialize recovery state\n");
2104 init_waitqueue_head(&osb
->checkpoint_event
);
2106 osb
->s_atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
2108 osb
->slot_num
= OCFS2_INVALID_SLOT
;
2110 osb
->s_xattr_inline_size
= le16_to_cpu(
2111 di
->id2
.i_super
.s_xattr_inline_size
);
2113 osb
->local_alloc_state
= OCFS2_LA_UNUSED
;
2114 osb
->local_alloc_bh
= NULL
;
2115 INIT_DELAYED_WORK(&osb
->la_enable_wq
, ocfs2_la_enable_worker
);
2117 init_waitqueue_head(&osb
->osb_mount_event
);
2119 status
= ocfs2_resmap_init(osb
, &osb
->osb_la_resmap
);
2125 osb
->vol_label
= kmalloc(OCFS2_MAX_VOL_LABEL_LEN
, GFP_KERNEL
);
2126 if (!osb
->vol_label
) {
2127 mlog(ML_ERROR
, "unable to alloc vol label\n");
2132 osb
->slot_recovery_generations
=
2133 kcalloc(osb
->max_slots
, sizeof(*osb
->slot_recovery_generations
),
2135 if (!osb
->slot_recovery_generations
) {
2141 init_waitqueue_head(&osb
->osb_wipe_event
);
2142 osb
->osb_orphan_wipes
= kcalloc(osb
->max_slots
,
2143 sizeof(*osb
->osb_orphan_wipes
),
2145 if (!osb
->osb_orphan_wipes
) {
2151 osb
->osb_rf_lock_tree
= RB_ROOT
;
2153 osb
->s_feature_compat
=
2154 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_compat
);
2155 osb
->s_feature_ro_compat
=
2156 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_ro_compat
);
2157 osb
->s_feature_incompat
=
2158 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_incompat
);
2160 if ((i
= OCFS2_HAS_INCOMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_INCOMPAT_SUPP
))) {
2161 mlog(ML_ERROR
, "couldn't mount because of unsupported "
2162 "optional features (%x).\n", i
);
2166 if (!sb_rdonly(osb
->sb
) && (i
= OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
))) {
2167 mlog(ML_ERROR
, "couldn't mount RDWR because of "
2168 "unsupported optional features (%x).\n", i
);
2173 if (ocfs2_clusterinfo_valid(osb
)) {
2174 osb
->osb_stackflags
=
2175 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stackflags
;
2176 strlcpy(osb
->osb_cluster_stack
,
2177 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stack
,
2178 OCFS2_STACK_LABEL_LEN
+ 1);
2179 if (strlen(osb
->osb_cluster_stack
) != OCFS2_STACK_LABEL_LEN
) {
2181 "couldn't mount because of an invalid "
2182 "cluster stack label (%s) \n",
2183 osb
->osb_cluster_stack
);
2187 strlcpy(osb
->osb_cluster_name
,
2188 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_cluster
,
2189 OCFS2_CLUSTER_NAME_LEN
+ 1);
2191 /* The empty string is identical with classic tools that
2192 * don't know about s_cluster_info. */
2193 osb
->osb_cluster_stack
[0] = '\0';
2196 get_random_bytes(&osb
->s_next_generation
, sizeof(u32
));
2199 * This should be done in ocfs2_journal_init(), but unknown
2200 * ordering issues will cause the filesystem to crash.
2201 * If anyone wants to figure out what part of the code
2202 * refers to osb->journal before ocfs2_journal_init() is run,
2205 /* initialize our journal structure */
2207 journal
= kzalloc(sizeof(struct ocfs2_journal
), GFP_KERNEL
);
2209 mlog(ML_ERROR
, "unable to alloc journal\n");
2213 osb
->journal
= journal
;
2214 journal
->j_osb
= osb
;
2216 atomic_set(&journal
->j_num_trans
, 0);
2217 init_rwsem(&journal
->j_trans_barrier
);
2218 init_waitqueue_head(&journal
->j_checkpointed
);
2219 spin_lock_init(&journal
->j_lock
);
2220 journal
->j_trans_id
= (unsigned long) 1;
2221 INIT_LIST_HEAD(&journal
->j_la_cleanups
);
2222 INIT_WORK(&journal
->j_recovery_work
, ocfs2_complete_recovery
);
2223 journal
->j_state
= OCFS2_JOURNAL_FREE
;
2225 INIT_WORK(&osb
->dquot_drop_work
, ocfs2_drop_dquot_refs
);
2226 init_llist_head(&osb
->dquot_drop_list
);
2228 /* get some pseudo constants for clustersize bits */
2229 osb
->s_clustersize_bits
=
2230 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2231 osb
->s_clustersize
= 1 << osb
->s_clustersize_bits
;
2233 if (osb
->s_clustersize
< OCFS2_MIN_CLUSTERSIZE
||
2234 osb
->s_clustersize
> OCFS2_MAX_CLUSTERSIZE
) {
2235 mlog(ML_ERROR
, "Volume has invalid cluster size (%d)\n",
2236 osb
->s_clustersize
);
2241 total_blocks
= ocfs2_clusters_to_blocks(osb
->sb
,
2242 le32_to_cpu(di
->i_clusters
));
2244 status
= generic_check_addressable(osb
->sb
->s_blocksize_bits
,
2247 mlog(ML_ERROR
, "Volume too large "
2248 "to mount safely on this system");
2253 if (ocfs2_setup_osb_uuid(osb
, di
->id2
.i_super
.s_uuid
,
2254 sizeof(di
->id2
.i_super
.s_uuid
))) {
2255 mlog(ML_ERROR
, "Out of memory trying to setup our uuid.\n");
2260 strlcpy(osb
->vol_label
, di
->id2
.i_super
.s_label
,
2261 OCFS2_MAX_VOL_LABEL_LEN
);
2262 osb
->root_blkno
= le64_to_cpu(di
->id2
.i_super
.s_root_blkno
);
2263 osb
->system_dir_blkno
= le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
);
2264 osb
->first_cluster_group_blkno
=
2265 le64_to_cpu(di
->id2
.i_super
.s_first_cluster_group
);
2266 osb
->fs_generation
= le32_to_cpu(di
->i_fs_generation
);
2267 osb
->uuid_hash
= le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2268 trace_ocfs2_initialize_super(osb
->vol_label
, osb
->uuid_str
,
2269 (unsigned long long)osb
->root_blkno
,
2270 (unsigned long long)osb
->system_dir_blkno
,
2271 osb
->s_clustersize_bits
);
2273 osb
->osb_dlm_debug
= ocfs2_new_dlm_debug();
2274 if (!osb
->osb_dlm_debug
) {
2280 atomic_set(&osb
->vol_state
, VOLUME_INIT
);
2282 /* load root, system_dir, and all global system inodes */
2283 status
= ocfs2_init_global_system_inodes(osb
);
2292 inode
= ocfs2_get_system_file_inode(osb
, GLOBAL_BITMAP_SYSTEM_INODE
,
2293 OCFS2_INVALID_SLOT
);
2300 osb
->bitmap_blkno
= OCFS2_I(inode
)->ip_blkno
;
2301 osb
->osb_clusters_at_boot
= OCFS2_I(inode
)->ip_clusters
;
2304 osb
->bitmap_cpg
= ocfs2_group_bitmap_size(sb
, 0,
2305 osb
->s_feature_incompat
) * 8;
2307 status
= ocfs2_init_slot_info(osb
);
2312 cleancache_init_shared_fs(sb
);
2314 osb
->ocfs2_wq
= alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM
);
2315 if (!osb
->ocfs2_wq
) {
2325 * will return: -EAGAIN if it is ok to keep searching for superblocks
2326 * -EINVAL if there is a bad superblock
2329 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
2330 struct buffer_head
*bh
,
2332 struct ocfs2_blockcheck_stats
*stats
)
2334 int status
= -EAGAIN
;
2336 if (memcmp(di
->i_signature
, OCFS2_SUPER_BLOCK_SIGNATURE
,
2337 strlen(OCFS2_SUPER_BLOCK_SIGNATURE
)) == 0) {
2338 /* We have to do a raw check of the feature here */
2339 if (le32_to_cpu(di
->id2
.i_super
.s_feature_incompat
) &
2340 OCFS2_FEATURE_INCOMPAT_META_ECC
) {
2341 status
= ocfs2_block_check_validate(bh
->b_data
,
2349 if ((1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
)) != blksz
) {
2350 mlog(ML_ERROR
, "found superblock with incorrect block "
2351 "size: found %u, should be %u\n",
2352 1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
),
2354 } else if (le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
) !=
2355 OCFS2_MAJOR_REV_LEVEL
||
2356 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
) !=
2357 OCFS2_MINOR_REV_LEVEL
) {
2358 mlog(ML_ERROR
, "found superblock with bad version: "
2359 "found %u.%u, should be %u.%u\n",
2360 le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
),
2361 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
),
2362 OCFS2_MAJOR_REV_LEVEL
,
2363 OCFS2_MINOR_REV_LEVEL
);
2364 } else if (bh
->b_blocknr
!= le64_to_cpu(di
->i_blkno
)) {
2365 mlog(ML_ERROR
, "bad block number on superblock: "
2366 "found %llu, should be %llu\n",
2367 (unsigned long long)le64_to_cpu(di
->i_blkno
),
2368 (unsigned long long)bh
->b_blocknr
);
2369 } else if (le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) < 12 ||
2370 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) > 20) {
2371 mlog(ML_ERROR
, "bad cluster size found: %u\n",
2372 1 << le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
));
2373 } else if (!le64_to_cpu(di
->id2
.i_super
.s_root_blkno
)) {
2374 mlog(ML_ERROR
, "bad root_blkno: 0\n");
2375 } else if (!le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
)) {
2376 mlog(ML_ERROR
, "bad system_dir_blkno: 0\n");
2377 } else if (le16_to_cpu(di
->id2
.i_super
.s_max_slots
) > OCFS2_MAX_SLOTS
) {
2379 "Superblock slots found greater than file system "
2380 "maximum: found %u, max %u\n",
2381 le16_to_cpu(di
->id2
.i_super
.s_max_slots
),
2390 if (status
&& status
!= -EAGAIN
)
2395 static int ocfs2_check_volume(struct ocfs2_super
*osb
)
2400 struct ocfs2_dinode
*local_alloc
= NULL
; /* only used if we
2404 /* Init our journal object. */
2405 status
= ocfs2_journal_init(osb
->journal
, &dirty
);
2407 mlog(ML_ERROR
, "Could not initialize journal!\n");
2411 /* Now that journal has been initialized, check to make sure
2412 entire volume is addressable. */
2413 status
= ocfs2_journal_addressable(osb
);
2417 /* If the journal was unmounted cleanly then we don't want to
2418 * recover anything. Otherwise, journal_load will do that
2419 * dirty work for us :) */
2421 status
= ocfs2_journal_wipe(osb
->journal
, 0);
2427 printk(KERN_NOTICE
"ocfs2: File system on device (%s) was not "
2428 "unmounted cleanly, recovering it.\n", osb
->dev_str
);
2431 local
= ocfs2_mount_local(osb
);
2433 /* will play back anything left in the journal. */
2434 status
= ocfs2_journal_load(osb
->journal
, local
, dirty
);
2436 mlog(ML_ERROR
, "ocfs2 journal load failed! %d\n", status
);
2440 if (osb
->s_mount_opt
& OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT
)
2441 jbd2_journal_set_features(osb
->journal
->j_journal
,
2442 JBD2_FEATURE_COMPAT_CHECKSUM
, 0,
2443 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT
);
2445 jbd2_journal_clear_features(osb
->journal
->j_journal
,
2446 JBD2_FEATURE_COMPAT_CHECKSUM
, 0,
2447 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT
);
2450 /* recover my local alloc if we didn't unmount cleanly. */
2451 status
= ocfs2_begin_local_alloc_recovery(osb
,
2458 /* we complete the recovery process after we've marked
2459 * ourselves as mounted. */
2462 status
= ocfs2_load_local_alloc(osb
);
2469 /* Recovery will be completed after we've mounted the
2470 * rest of the volume. */
2471 osb
->local_alloc_copy
= local_alloc
;
2475 /* go through each journal, trylock it and if you get the
2476 * lock, and it's marked as dirty, set the bit in the recover
2477 * map and launch a recovery thread for it. */
2478 status
= ocfs2_mark_dead_nodes(osb
);
2484 status
= ocfs2_compute_replay_slots(osb
);
2497 * The routine gets called from dismount or close whenever a dismount on
2498 * volume is requested and the osb open count becomes 1.
2499 * It will remove the osb from the global list and also free up all the
2500 * initialized resources and fileobject.
2502 static void ocfs2_delete_osb(struct ocfs2_super
*osb
)
2504 /* This function assumes that the caller has the main osb resource */
2506 /* ocfs2_initializer_super have already created this workqueue */
2508 destroy_workqueue(osb
->ocfs2_wq
);
2510 ocfs2_free_slot_info(osb
);
2512 kfree(osb
->osb_orphan_wipes
);
2513 kfree(osb
->slot_recovery_generations
);
2515 * This belongs in journal shutdown, but because we have to
2516 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2519 kfree(osb
->journal
);
2520 kfree(osb
->local_alloc_copy
);
2521 kfree(osb
->uuid_str
);
2522 kfree(osb
->vol_label
);
2523 ocfs2_put_dlm_debug(osb
->osb_dlm_debug
);
2524 memset(osb
, 0, sizeof(struct ocfs2_super
));
2527 /* Depending on the mount option passed, perform one of the following:
2528 * Put OCFS2 into a readonly state (default)
2529 * Return EIO so that only the process errs
2530 * Fix the error as if fsck.ocfs2 -y
2533 static int ocfs2_handle_error(struct super_block
*sb
)
2535 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
2538 ocfs2_set_osb_flag(osb
, OCFS2_OSB_ERROR_FS
);
2539 pr_crit("On-disk corruption discovered. "
2540 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
2542 if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_PANIC
) {
2543 panic("OCFS2: (device %s): panic forced after error\n",
2545 } else if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_CONT
) {
2546 pr_crit("OCFS2: Returning error to the calling process.\n");
2548 } else { /* default option */
2550 if (sb_rdonly(sb
) && (ocfs2_is_soft_readonly(osb
) || ocfs2_is_hard_readonly(osb
)))
2553 pr_crit("OCFS2: File system is now read-only.\n");
2554 sb
->s_flags
|= SB_RDONLY
;
2555 ocfs2_set_ro_flag(osb
, 0);
2561 int __ocfs2_error(struct super_block
*sb
, const char *function
,
2562 const char *fmt
, ...)
2564 struct va_format vaf
;
2567 va_start(args
, fmt
);
2571 /* Not using mlog here because we want to show the actual
2572 * function the error came from. */
2573 printk(KERN_CRIT
"OCFS2: ERROR (device %s): %s: %pV",
2574 sb
->s_id
, function
, &vaf
);
2578 return ocfs2_handle_error(sb
);
2581 /* Handle critical errors. This is intentionally more drastic than
2582 * ocfs2_handle_error, so we only use for things like journal errors,
2584 void __ocfs2_abort(struct super_block
*sb
, const char *function
,
2585 const char *fmt
, ...)
2587 struct va_format vaf
;
2590 va_start(args
, fmt
);
2595 printk(KERN_CRIT
"OCFS2: abort (device %s): %s: %pV",
2596 sb
->s_id
, function
, &vaf
);
2600 /* We don't have the cluster support yet to go straight to
2601 * hard readonly in here. Until then, we want to keep
2602 * ocfs2_abort() so that we can at least mark critical
2605 * TODO: This should abort the journal and alert other nodes
2606 * that our slot needs recovery. */
2608 /* Force a panic(). This stinks, but it's better than letting
2609 * things continue without having a proper hard readonly
2611 if (!ocfs2_mount_local(OCFS2_SB(sb
)))
2612 OCFS2_SB(sb
)->s_mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
2613 ocfs2_handle_error(sb
);
2617 * Void signal blockers, because in-kernel sigprocmask() only fails
2618 * when SIG_* is wrong.
2620 void ocfs2_block_signals(sigset_t
*oldset
)
2625 sigfillset(&blocked
);
2626 rc
= sigprocmask(SIG_BLOCK
, &blocked
, oldset
);
2630 void ocfs2_unblock_signals(sigset_t
*oldset
)
2632 int rc
= sigprocmask(SIG_SETMASK
, oldset
, NULL
);
2636 module_init(ocfs2_init
);
2637 module_exit(ocfs2_exit
);