1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * load/unload driver, mount/dismount volumes
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
26 #include <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/slab.h>
30 #include <linux/highmem.h>
31 #include <linux/init.h>
32 #include <linux/random.h>
33 #include <linux/statfs.h>
34 #include <linux/moduleparam.h>
35 #include <linux/blkdev.h>
36 #include <linux/socket.h>
37 #include <linux/inet.h>
38 #include <linux/parser.h>
39 #include <linux/crc32.h>
40 #include <linux/debugfs.h>
41 #include <linux/mount.h>
42 #include <linux/seq_file.h>
43 #include <linux/quotaops.h>
44 #include <linux/cleancache.h>
45 #include <linux/signal.h>
47 #define CREATE_TRACE_POINTS
48 #include "ocfs2_trace.h"
50 #include <cluster/masklog.h>
54 /* this should be the only file to include a version 1 header */
55 #include "ocfs1_fs_compat.h"
59 #include "blockcheck.h"
62 #include "extent_map.h"
63 #include "heartbeat.h"
66 #include "localalloc.h"
74 #include "refcounttree.h"
77 #include "buffer_head_io.h"
78 #include "filecheck.h"
80 static struct kmem_cache
*ocfs2_inode_cachep
;
81 struct kmem_cache
*ocfs2_dquot_cachep
;
82 struct kmem_cache
*ocfs2_qf_chunk_cachep
;
84 static struct dentry
*ocfs2_debugfs_root
;
86 MODULE_AUTHOR("Oracle");
87 MODULE_LICENSE("GPL");
88 MODULE_DESCRIPTION("OCFS2 cluster file system");
92 unsigned long commit_interval
;
93 unsigned long mount_opt
;
94 unsigned int atime_quantum
;
97 unsigned int resv_level
;
99 char cluster_stack
[OCFS2_STACK_LABEL_LEN
+ 1];
102 static int ocfs2_parse_options(struct super_block
*sb
, char *options
,
103 struct mount_options
*mopt
,
105 static int ocfs2_check_set_options(struct super_block
*sb
,
106 struct mount_options
*options
);
107 static int ocfs2_show_options(struct seq_file
*s
, struct dentry
*root
);
108 static void ocfs2_put_super(struct super_block
*sb
);
109 static int ocfs2_mount_volume(struct super_block
*sb
);
110 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
);
111 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
);
112 static int ocfs2_initialize_mem_caches(void);
113 static void ocfs2_free_mem_caches(void);
114 static void ocfs2_delete_osb(struct ocfs2_super
*osb
);
116 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
);
118 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
);
120 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
);
121 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
);
122 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
);
123 static int ocfs2_check_volume(struct ocfs2_super
*osb
);
124 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
125 struct buffer_head
*bh
,
127 struct ocfs2_blockcheck_stats
*stats
);
128 static int ocfs2_initialize_super(struct super_block
*sb
,
129 struct buffer_head
*bh
,
131 struct ocfs2_blockcheck_stats
*stats
);
132 static int ocfs2_get_sector(struct super_block
*sb
,
133 struct buffer_head
**bh
,
136 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
);
137 static void ocfs2_destroy_inode(struct inode
*inode
);
138 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
);
139 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
);
140 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
);
142 static struct dquot
**ocfs2_get_dquots(struct inode
*inode
)
144 return OCFS2_I(inode
)->i_dquot
;
147 static const struct super_operations ocfs2_sops
= {
148 .statfs
= ocfs2_statfs
,
149 .alloc_inode
= ocfs2_alloc_inode
,
150 .destroy_inode
= ocfs2_destroy_inode
,
151 .drop_inode
= ocfs2_drop_inode
,
152 .evict_inode
= ocfs2_evict_inode
,
153 .sync_fs
= ocfs2_sync_fs
,
154 .put_super
= ocfs2_put_super
,
155 .remount_fs
= ocfs2_remount
,
156 .show_options
= ocfs2_show_options
,
157 .quota_read
= ocfs2_quota_read
,
158 .quota_write
= ocfs2_quota_write
,
159 .get_dquots
= ocfs2_get_dquots
,
186 Opt_coherency_buffered
,
190 Opt_journal_async_commit
,
195 static const match_table_t tokens
= {
196 {Opt_barrier
, "barrier=%u"},
197 {Opt_err_panic
, "errors=panic"},
198 {Opt_err_ro
, "errors=remount-ro"},
200 {Opt_nointr
, "nointr"},
201 {Opt_hb_none
, OCFS2_HB_NONE
},
202 {Opt_hb_local
, OCFS2_HB_LOCAL
},
203 {Opt_hb_global
, OCFS2_HB_GLOBAL
},
204 {Opt_data_ordered
, "data=ordered"},
205 {Opt_data_writeback
, "data=writeback"},
206 {Opt_atime_quantum
, "atime_quantum=%u"},
207 {Opt_slot
, "preferred_slot=%u"},
208 {Opt_commit
, "commit=%u"},
209 {Opt_localalloc
, "localalloc=%d"},
210 {Opt_localflocks
, "localflocks"},
211 {Opt_stack
, "cluster_stack=%s"},
212 {Opt_user_xattr
, "user_xattr"},
213 {Opt_nouser_xattr
, "nouser_xattr"},
214 {Opt_inode64
, "inode64"},
216 {Opt_noacl
, "noacl"},
217 {Opt_usrquota
, "usrquota"},
218 {Opt_grpquota
, "grpquota"},
219 {Opt_coherency_buffered
, "coherency=buffered"},
220 {Opt_coherency_full
, "coherency=full"},
221 {Opt_resv_level
, "resv_level=%u"},
222 {Opt_dir_resv_level
, "dir_resv_level=%u"},
223 {Opt_journal_async_commit
, "journal_async_commit"},
224 {Opt_err_cont
, "errors=continue"},
228 #ifdef CONFIG_DEBUG_FS
229 static int ocfs2_osb_dump(struct ocfs2_super
*osb
, char *buf
, int len
)
231 struct ocfs2_cluster_connection
*cconn
= osb
->cconn
;
232 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
233 struct ocfs2_orphan_scan
*os
= &osb
->osb_orphan_scan
;
237 out
+= snprintf(buf
+ out
, len
- out
,
238 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
239 "Device", osb
->dev_str
, osb
->uuid_str
,
240 osb
->fs_generation
, osb
->vol_label
);
242 out
+= snprintf(buf
+ out
, len
- out
,
243 "%10s => State: %d Flags: 0x%lX\n", "Volume",
244 atomic_read(&osb
->vol_state
), osb
->osb_flags
);
246 out
+= snprintf(buf
+ out
, len
- out
,
247 "%10s => Block: %lu Cluster: %d\n", "Sizes",
248 osb
->sb
->s_blocksize
, osb
->s_clustersize
);
250 out
+= snprintf(buf
+ out
, len
- out
,
251 "%10s => Compat: 0x%X Incompat: 0x%X "
253 "Features", osb
->s_feature_compat
,
254 osb
->s_feature_incompat
, osb
->s_feature_ro_compat
);
256 out
+= snprintf(buf
+ out
, len
- out
,
257 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
258 osb
->s_mount_opt
, osb
->s_atime_quantum
);
261 out
+= snprintf(buf
+ out
, len
- out
,
262 "%10s => Stack: %s Name: %*s "
263 "Version: %d.%d\n", "Cluster",
264 (*osb
->osb_cluster_stack
== '\0' ?
265 "o2cb" : osb
->osb_cluster_stack
),
266 cconn
->cc_namelen
, cconn
->cc_name
,
267 cconn
->cc_version
.pv_major
,
268 cconn
->cc_version
.pv_minor
);
271 spin_lock_irqsave(&osb
->dc_task_lock
, flags
);
272 out
+= snprintf(buf
+ out
, len
- out
,
273 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
274 "WorkSeq: %lu\n", "DownCnvt",
275 (osb
->dc_task
? task_pid_nr(osb
->dc_task
) : -1),
276 osb
->blocked_lock_count
, osb
->dc_wake_sequence
,
277 osb
->dc_work_sequence
);
278 spin_unlock_irqrestore(&osb
->dc_task_lock
, flags
);
280 spin_lock(&osb
->osb_lock
);
281 out
+= snprintf(buf
+ out
, len
- out
, "%10s => Pid: %d Nodes:",
283 (osb
->recovery_thread_task
?
284 task_pid_nr(osb
->recovery_thread_task
) : -1));
285 if (rm
->rm_used
== 0)
286 out
+= snprintf(buf
+ out
, len
- out
, " None\n");
288 for (i
= 0; i
< rm
->rm_used
; i
++)
289 out
+= snprintf(buf
+ out
, len
- out
, " %d",
291 out
+= snprintf(buf
+ out
, len
- out
, "\n");
293 spin_unlock(&osb
->osb_lock
);
295 out
+= snprintf(buf
+ out
, len
- out
,
296 "%10s => Pid: %d Interval: %lu\n", "Commit",
297 (osb
->commit_task
? task_pid_nr(osb
->commit_task
) : -1),
298 osb
->osb_commit_interval
);
300 out
+= snprintf(buf
+ out
, len
- out
,
301 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
302 "Journal", osb
->journal
->j_state
,
303 osb
->journal
->j_trans_id
,
304 atomic_read(&osb
->journal
->j_num_trans
));
306 out
+= snprintf(buf
+ out
, len
- out
,
307 "%10s => GlobalAllocs: %d LocalAllocs: %d "
308 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
310 atomic_read(&osb
->alloc_stats
.bitmap_data
),
311 atomic_read(&osb
->alloc_stats
.local_data
),
312 atomic_read(&osb
->alloc_stats
.bg_allocs
),
313 atomic_read(&osb
->alloc_stats
.moves
),
314 atomic_read(&osb
->alloc_stats
.bg_extends
));
316 out
+= snprintf(buf
+ out
, len
- out
,
317 "%10s => State: %u Descriptor: %llu Size: %u bits "
318 "Default: %u bits\n",
319 "LocalAlloc", osb
->local_alloc_state
,
320 (unsigned long long)osb
->la_last_gd
,
321 osb
->local_alloc_bits
, osb
->local_alloc_default_bits
);
323 spin_lock(&osb
->osb_lock
);
324 out
+= snprintf(buf
+ out
, len
- out
,
325 "%10s => InodeSlot: %d StolenInodes: %d, "
326 "MetaSlot: %d StolenMeta: %d\n", "Steal",
327 osb
->s_inode_steal_slot
,
328 atomic_read(&osb
->s_num_inodes_stolen
),
329 osb
->s_meta_steal_slot
,
330 atomic_read(&osb
->s_num_meta_stolen
));
331 spin_unlock(&osb
->osb_lock
);
333 out
+= snprintf(buf
+ out
, len
- out
, "OrphanScan => ");
334 out
+= snprintf(buf
+ out
, len
- out
, "Local: %u Global: %u ",
335 os
->os_count
, os
->os_seqno
);
336 out
+= snprintf(buf
+ out
, len
- out
, " Last Scan: ");
337 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_INACTIVE
)
338 out
+= snprintf(buf
+ out
, len
- out
, "Disabled\n");
340 out
+= snprintf(buf
+ out
, len
- out
, "%lu seconds ago\n",
341 (unsigned long)(ktime_get_seconds() - os
->os_scantime
));
343 out
+= snprintf(buf
+ out
, len
- out
, "%10s => %3s %10s\n",
344 "Slots", "Num", "RecoGen");
345 for (i
= 0; i
< osb
->max_slots
; ++i
) {
346 out
+= snprintf(buf
+ out
, len
- out
,
347 "%10s %c %3d %10d\n",
349 (i
== osb
->slot_num
? '*' : ' '),
350 i
, osb
->slot_recovery_generations
[i
]);
356 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
358 struct ocfs2_super
*osb
= inode
->i_private
;
361 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
365 i_size_write(inode
, ocfs2_osb_dump(osb
, buf
, PAGE_SIZE
));
367 file
->private_data
= buf
;
374 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
376 kfree(file
->private_data
);
380 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
381 size_t nbytes
, loff_t
*ppos
)
383 return simple_read_from_buffer(buf
, nbytes
, ppos
, file
->private_data
,
384 i_size_read(file
->f_mapping
->host
));
387 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
391 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
395 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
396 size_t nbytes
, loff_t
*ppos
)
400 #endif /* CONFIG_DEBUG_FS */
402 static const struct file_operations ocfs2_osb_debug_fops
= {
403 .open
= ocfs2_osb_debug_open
,
404 .release
= ocfs2_debug_release
,
405 .read
= ocfs2_debug_read
,
406 .llseek
= generic_file_llseek
,
409 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
)
413 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
415 if (ocfs2_is_hard_readonly(osb
))
419 status
= ocfs2_flush_truncate_log(osb
);
423 ocfs2_schedule_truncate_log_flush(osb
, 0);
426 if (jbd2_journal_start_commit(OCFS2_SB(sb
)->journal
->j_journal
,
429 jbd2_log_wait_commit(OCFS2_SB(sb
)->journal
->j_journal
,
435 static int ocfs2_need_system_inode(struct ocfs2_super
*osb
, int ino
)
437 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)
438 && (ino
== USER_QUOTA_SYSTEM_INODE
439 || ino
== LOCAL_USER_QUOTA_SYSTEM_INODE
))
441 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)
442 && (ino
== GROUP_QUOTA_SYSTEM_INODE
443 || ino
== LOCAL_GROUP_QUOTA_SYSTEM_INODE
))
448 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
)
450 struct inode
*new = NULL
;
454 new = ocfs2_iget(osb
, osb
->root_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
456 status
= PTR_ERR(new);
460 osb
->root_inode
= new;
462 new = ocfs2_iget(osb
, osb
->system_dir_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
464 status
= PTR_ERR(new);
468 osb
->sys_root_inode
= new;
470 for (i
= OCFS2_FIRST_ONLINE_SYSTEM_INODE
;
471 i
<= OCFS2_LAST_GLOBAL_SYSTEM_INODE
; i
++) {
472 if (!ocfs2_need_system_inode(osb
, i
))
474 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
476 ocfs2_release_system_inodes(osb
);
479 /* FIXME: Should ERROR_RO_FS */
480 mlog(ML_ERROR
, "Unable to load system inode %d, "
481 "possibly corrupt fs?", i
);
484 // the array now has one ref, so drop this one
494 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
)
496 struct inode
*new = NULL
;
500 for (i
= OCFS2_LAST_GLOBAL_SYSTEM_INODE
+ 1;
501 i
< NUM_SYSTEM_INODES
;
503 if (!ocfs2_need_system_inode(osb
, i
))
505 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
507 ocfs2_release_system_inodes(osb
);
509 mlog(ML_ERROR
, "status=%d, sysfile=%d, slot=%d\n",
510 status
, i
, osb
->slot_num
);
513 /* the array now has one ref, so drop this one */
523 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
)
528 for (i
= 0; i
< NUM_GLOBAL_SYSTEM_INODES
; i
++) {
529 inode
= osb
->global_system_inodes
[i
];
532 osb
->global_system_inodes
[i
] = NULL
;
536 inode
= osb
->sys_root_inode
;
539 osb
->sys_root_inode
= NULL
;
542 inode
= osb
->root_inode
;
545 osb
->root_inode
= NULL
;
548 if (!osb
->local_system_inodes
)
551 for (i
= 0; i
< NUM_LOCAL_SYSTEM_INODES
* osb
->max_slots
; i
++) {
552 if (osb
->local_system_inodes
[i
]) {
553 iput(osb
->local_system_inodes
[i
]);
554 osb
->local_system_inodes
[i
] = NULL
;
558 kfree(osb
->local_system_inodes
);
559 osb
->local_system_inodes
= NULL
;
562 /* We're allocating fs objects, use GFP_NOFS */
563 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
)
565 struct ocfs2_inode_info
*oi
;
567 oi
= kmem_cache_alloc(ocfs2_inode_cachep
, GFP_NOFS
);
572 oi
->i_datasync_tid
= 0;
573 memset(&oi
->i_dquot
, 0, sizeof(oi
->i_dquot
));
575 jbd2_journal_init_jbd_inode(&oi
->ip_jinode
, &oi
->vfs_inode
);
576 return &oi
->vfs_inode
;
579 static void ocfs2_i_callback(struct rcu_head
*head
)
581 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
582 kmem_cache_free(ocfs2_inode_cachep
, OCFS2_I(inode
));
585 static void ocfs2_destroy_inode(struct inode
*inode
)
587 call_rcu(&inode
->i_rcu
, ocfs2_i_callback
);
590 static unsigned long long ocfs2_max_file_offset(unsigned int bbits
,
593 unsigned int bytes
= 1 << cbits
;
594 unsigned int trim
= bytes
;
595 unsigned int bitshift
= 32;
598 * i_size and all block offsets in ocfs2 are always 64 bits
599 * wide. i_clusters is 32 bits, in cluster-sized units. So on
600 * 64 bit platforms, cluster size will be the limiting factor.
603 #if BITS_PER_LONG == 32
604 # if defined(CONFIG_LBDAF)
605 BUILD_BUG_ON(sizeof(sector_t
) != 8);
607 * We might be limited by page cache size.
609 if (bytes
> PAGE_SIZE
) {
613 * Shift by 31 here so that we don't get larger than
620 * We are limited by the size of sector_t. Use block size, as
621 * that's what we expose to the VFS.
630 * Trim by a whole cluster when we can actually approach the
631 * on-disk limits. Otherwise we can overflow i_clusters when
632 * an extent start is at the max offset.
634 return (((unsigned long long)bytes
) << bitshift
) - trim
;
637 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
)
639 int incompat_features
;
641 struct mount_options parsed_options
;
642 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
647 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 1) ||
648 !ocfs2_check_set_options(sb
, &parsed_options
)) {
653 tmp
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
|
655 if ((osb
->s_mount_opt
& tmp
) != (parsed_options
.mount_opt
& tmp
)) {
657 mlog(ML_ERROR
, "Cannot change heartbeat mode on remount\n");
661 if ((osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
) !=
662 (parsed_options
.mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
)) {
664 mlog(ML_ERROR
, "Cannot change data mode on remount\n");
668 /* Probably don't want this on remount; it might
669 * mess with other nodes */
670 if (!(osb
->s_mount_opt
& OCFS2_MOUNT_INODE64
) &&
671 (parsed_options
.mount_opt
& OCFS2_MOUNT_INODE64
)) {
673 mlog(ML_ERROR
, "Cannot enable inode64 on remount\n");
677 /* We're going to/from readonly mode. */
678 if ((*flags
& MS_RDONLY
) != (sb
->s_flags
& MS_RDONLY
)) {
679 /* Disable quota accounting before remounting RO */
680 if (*flags
& MS_RDONLY
) {
681 ret
= ocfs2_susp_quotas(osb
, 0);
685 /* Lock here so the check of HARD_RO and the potential
686 * setting of SOFT_RO is atomic. */
687 spin_lock(&osb
->osb_lock
);
688 if (osb
->osb_flags
& OCFS2_OSB_HARD_RO
) {
689 mlog(ML_ERROR
, "Remount on readonly device is forbidden.\n");
694 if (*flags
& MS_RDONLY
) {
695 sb
->s_flags
|= MS_RDONLY
;
696 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
698 if (osb
->osb_flags
& OCFS2_OSB_ERROR_FS
) {
699 mlog(ML_ERROR
, "Cannot remount RDWR "
700 "filesystem due to previous errors.\n");
704 incompat_features
= OCFS2_HAS_RO_COMPAT_FEATURE(sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
);
705 if (incompat_features
) {
706 mlog(ML_ERROR
, "Cannot remount RDWR because "
707 "of unsupported optional features "
708 "(%x).\n", incompat_features
);
712 sb
->s_flags
&= ~MS_RDONLY
;
713 osb
->osb_flags
&= ~OCFS2_OSB_SOFT_RO
;
715 trace_ocfs2_remount(sb
->s_flags
, osb
->osb_flags
, *flags
);
717 spin_unlock(&osb
->osb_lock
);
718 /* Enable quota accounting after remounting RW */
719 if (!ret
&& !(*flags
& MS_RDONLY
)) {
720 if (sb_any_quota_suspended(sb
))
721 ret
= ocfs2_susp_quotas(osb
, 1);
723 ret
= ocfs2_enable_quotas(osb
);
725 /* Return back changes... */
726 spin_lock(&osb
->osb_lock
);
727 sb
->s_flags
|= MS_RDONLY
;
728 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
729 spin_unlock(&osb
->osb_lock
);
736 /* Only save off the new mount options in case of a successful
738 osb
->s_mount_opt
= parsed_options
.mount_opt
;
739 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
740 osb
->preferred_slot
= parsed_options
.slot
;
741 if (parsed_options
.commit_interval
)
742 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
744 if (!ocfs2_is_hard_readonly(osb
))
745 ocfs2_set_journal_params(osb
);
747 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
748 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ?
755 static int ocfs2_sb_probe(struct super_block
*sb
,
756 struct buffer_head
**bh
,
758 struct ocfs2_blockcheck_stats
*stats
)
761 struct ocfs1_vol_disk_hdr
*hdr
;
762 struct ocfs2_dinode
*di
;
768 *sector_size
= bdev_logical_block_size(sb
->s_bdev
);
769 if (*sector_size
> OCFS2_MAX_BLOCKSIZE
) {
770 mlog(ML_ERROR
, "Hardware sector size too large: %d (max=%d)\n",
771 *sector_size
, OCFS2_MAX_BLOCKSIZE
);
776 /* Can this really happen? */
777 if (*sector_size
< OCFS2_MIN_BLOCKSIZE
)
778 *sector_size
= OCFS2_MIN_BLOCKSIZE
;
780 /* check block zero for old format */
781 status
= ocfs2_get_sector(sb
, bh
, 0, *sector_size
);
786 hdr
= (struct ocfs1_vol_disk_hdr
*) (*bh
)->b_data
;
787 if (hdr
->major_version
== OCFS1_MAJOR_VERSION
) {
788 mlog(ML_ERROR
, "incompatible version: %u.%u\n",
789 hdr
->major_version
, hdr
->minor_version
);
792 if (memcmp(hdr
->signature
, OCFS1_VOLUME_SIGNATURE
,
793 strlen(OCFS1_VOLUME_SIGNATURE
)) == 0) {
794 mlog(ML_ERROR
, "incompatible volume signature: %8s\n",
801 mlog(ML_ERROR
, "This is an ocfs v1 filesystem which must be "
802 "upgraded before mounting with ocfs v2\n");
807 * Now check at magic offset for 512, 1024, 2048, 4096
808 * blocksizes. 4096 is the maximum blocksize because it is
809 * the minimum clustersize.
812 for (blksize
= *sector_size
;
813 blksize
<= OCFS2_MAX_BLOCKSIZE
;
815 tmpstat
= ocfs2_get_sector(sb
, bh
,
816 OCFS2_SUPER_BLOCK_BLKNO
,
823 di
= (struct ocfs2_dinode
*) (*bh
)->b_data
;
824 memset(stats
, 0, sizeof(struct ocfs2_blockcheck_stats
));
825 spin_lock_init(&stats
->b_lock
);
826 tmpstat
= ocfs2_verify_volume(di
, *bh
, blksize
, stats
);
831 if (tmpstat
!= -EAGAIN
) {
841 static int ocfs2_verify_heartbeat(struct ocfs2_super
*osb
)
843 u32 hb_enabled
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
;
845 if (osb
->s_mount_opt
& hb_enabled
) {
846 if (ocfs2_mount_local(osb
)) {
847 mlog(ML_ERROR
, "Cannot heartbeat on a locally "
848 "mounted device.\n");
851 if (ocfs2_userspace_stack(osb
)) {
852 mlog(ML_ERROR
, "Userspace stack expected, but "
853 "o2cb heartbeat arguments passed to mount\n");
856 if (((osb
->s_mount_opt
& OCFS2_MOUNT_HB_GLOBAL
) &&
857 !ocfs2_cluster_o2cb_global_heartbeat(osb
)) ||
858 ((osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) &&
859 ocfs2_cluster_o2cb_global_heartbeat(osb
))) {
860 mlog(ML_ERROR
, "Mismatching o2cb heartbeat modes\n");
865 if (!(osb
->s_mount_opt
& hb_enabled
)) {
866 if (!ocfs2_mount_local(osb
) && !ocfs2_is_hard_readonly(osb
) &&
867 !ocfs2_userspace_stack(osb
)) {
868 mlog(ML_ERROR
, "Heartbeat has to be started to mount "
869 "a read-write clustered device.\n");
878 * If we're using a userspace stack, mount should have passed
879 * a name that matches the disk. If not, mount should not
880 * have passed a stack.
882 static int ocfs2_verify_userspace_stack(struct ocfs2_super
*osb
,
883 struct mount_options
*mopt
)
885 if (!ocfs2_userspace_stack(osb
) && mopt
->cluster_stack
[0]) {
887 "cluster stack passed to mount, but this filesystem "
888 "does not support it\n");
892 if (ocfs2_userspace_stack(osb
) &&
893 strncmp(osb
->osb_cluster_stack
, mopt
->cluster_stack
,
894 OCFS2_STACK_LABEL_LEN
)) {
896 "cluster stack passed to mount (\"%s\") does not "
897 "match the filesystem (\"%s\")\n",
899 osb
->osb_cluster_stack
);
906 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
)
909 struct super_block
*sb
= osb
->sb
;
910 unsigned int feature
[OCFS2_MAXQUOTAS
] = {
911 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
912 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
915 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++) {
916 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
919 status
= dquot_resume(sb
, type
);
921 struct ocfs2_mem_dqinfo
*oinfo
;
923 /* Cancel periodic syncing before suspending */
924 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
925 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
926 status
= dquot_suspend(sb
, type
);
932 mlog(ML_ERROR
, "Failed to suspend/unsuspend quotas on "
933 "remount (error = %d).\n", status
);
937 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
)
939 struct inode
*inode
[OCFS2_MAXQUOTAS
] = { NULL
, NULL
};
940 struct super_block
*sb
= osb
->sb
;
941 unsigned int feature
[OCFS2_MAXQUOTAS
] = {
942 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
943 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
944 unsigned int ino
[OCFS2_MAXQUOTAS
] = {
945 LOCAL_USER_QUOTA_SYSTEM_INODE
,
946 LOCAL_GROUP_QUOTA_SYSTEM_INODE
};
950 sb_dqopt(sb
)->flags
|= DQUOT_QUOTA_SYS_FILE
| DQUOT_NEGATIVE_USAGE
;
951 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++) {
952 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
954 inode
[type
] = ocfs2_get_system_file_inode(osb
, ino
[type
],
960 status
= dquot_enable(inode
[type
], type
, QFMT_OCFS2
,
961 DQUOT_USAGE_ENABLED
);
966 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++)
970 ocfs2_disable_quotas(osb
);
971 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++)
977 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
)
981 struct super_block
*sb
= osb
->sb
;
982 struct ocfs2_mem_dqinfo
*oinfo
;
984 /* We mostly ignore errors in this function because there's not much
985 * we can do when we see them */
986 for (type
= 0; type
< OCFS2_MAXQUOTAS
; type
++) {
987 if (!sb_has_quota_loaded(sb
, type
))
989 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
990 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
991 inode
= igrab(sb
->s_dquot
.files
[type
]);
992 /* Turn off quotas. This will remove all dquot structures from
993 * memory and so they will be automatically synced to global
995 dquot_disable(sb
, type
, DQUOT_USAGE_ENABLED
|
996 DQUOT_LIMITS_ENABLED
);
1003 static int ocfs2_fill_super(struct super_block
*sb
, void *data
, int silent
)
1005 struct dentry
*root
;
1006 int status
, sector_size
;
1007 struct mount_options parsed_options
;
1008 struct inode
*inode
= NULL
;
1009 struct ocfs2_super
*osb
= NULL
;
1010 struct buffer_head
*bh
= NULL
;
1012 struct ocfs2_blockcheck_stats stats
;
1014 trace_ocfs2_fill_super(sb
, data
, silent
);
1016 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 0)) {
1018 goto read_super_error
;
1021 /* probe for superblock */
1022 status
= ocfs2_sb_probe(sb
, &bh
, §or_size
, &stats
);
1024 mlog(ML_ERROR
, "superblock probe failed!\n");
1025 goto read_super_error
;
1028 status
= ocfs2_initialize_super(sb
, bh
, sector_size
, &stats
);
1032 goto read_super_error
;
1037 if (!ocfs2_check_set_options(sb
, &parsed_options
)) {
1039 goto read_super_error
;
1041 osb
->s_mount_opt
= parsed_options
.mount_opt
;
1042 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
1043 osb
->preferred_slot
= parsed_options
.slot
;
1044 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
1046 ocfs2_la_set_sizes(osb
, parsed_options
.localalloc_opt
);
1047 osb
->osb_resv_level
= parsed_options
.resv_level
;
1048 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1049 if (parsed_options
.dir_resv_level
== -1)
1050 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1052 osb
->osb_dir_resv_level
= parsed_options
.dir_resv_level
;
1054 status
= ocfs2_verify_userspace_stack(osb
, &parsed_options
);
1056 goto read_super_error
;
1058 sb
->s_magic
= OCFS2_SUPER_MAGIC
;
1060 sb
->s_flags
= (sb
->s_flags
& ~(MS_POSIXACL
| MS_NOSEC
)) |
1061 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ? MS_POSIXACL
: 0);
1063 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1065 if (bdev_read_only(sb
->s_bdev
)) {
1066 if (!(sb
->s_flags
& MS_RDONLY
)) {
1068 mlog(ML_ERROR
, "Readonly device detected but readonly "
1069 "mount was not specified.\n");
1070 goto read_super_error
;
1073 /* You should not be able to start a local heartbeat
1074 * on a readonly device. */
1075 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
1077 mlog(ML_ERROR
, "Local heartbeat specified on readonly "
1079 goto read_super_error
;
1082 status
= ocfs2_check_journals_nolocks(osb
);
1084 if (status
== -EROFS
)
1085 mlog(ML_ERROR
, "Recovery required on readonly "
1086 "file system, but write access is "
1090 goto read_super_error
;
1093 ocfs2_set_ro_flag(osb
, 1);
1095 printk(KERN_NOTICE
"ocfs2: Readonly device (%s) detected. "
1096 "Cluster services will not be used for this mount. "
1097 "Recovery will be skipped.\n", osb
->dev_str
);
1100 if (!ocfs2_is_hard_readonly(osb
)) {
1101 if (sb
->s_flags
& MS_RDONLY
)
1102 ocfs2_set_ro_flag(osb
, 0);
1105 status
= ocfs2_verify_heartbeat(osb
);
1108 goto read_super_error
;
1111 osb
->osb_debug_root
= debugfs_create_dir(osb
->uuid_str
,
1112 ocfs2_debugfs_root
);
1113 if (!osb
->osb_debug_root
) {
1115 mlog(ML_ERROR
, "Unable to create per-mount debugfs root.\n");
1116 goto read_super_error
;
1119 osb
->osb_ctxt
= debugfs_create_file("fs_state", S_IFREG
|S_IRUSR
,
1120 osb
->osb_debug_root
,
1122 &ocfs2_osb_debug_fops
);
1123 if (!osb
->osb_ctxt
) {
1126 goto read_super_error
;
1129 if (ocfs2_meta_ecc(osb
)) {
1130 status
= ocfs2_blockcheck_stats_debugfs_install(
1131 &osb
->osb_ecc_stats
,
1132 osb
->osb_debug_root
);
1135 "Unable to create blockcheck statistics "
1137 goto read_super_error
;
1141 status
= ocfs2_mount_volume(sb
);
1143 goto read_super_error
;
1145 if (osb
->root_inode
)
1146 inode
= igrab(osb
->root_inode
);
1151 goto read_super_error
;
1154 root
= d_make_root(inode
);
1158 goto read_super_error
;
1163 ocfs2_complete_mount_recovery(osb
);
1165 if (ocfs2_mount_local(osb
))
1166 snprintf(nodestr
, sizeof(nodestr
), "local");
1168 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1170 printk(KERN_INFO
"ocfs2: Mounting device (%s) on (node %s, slot %d) "
1171 "with %s data mode.\n",
1172 osb
->dev_str
, nodestr
, osb
->slot_num
,
1173 osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
? "writeback" :
1176 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED
);
1177 wake_up(&osb
->osb_mount_event
);
1179 /* Now we can initialize quotas because we can afford to wait
1180 * for cluster locks recovery now. That also means that truncation
1181 * log recovery can happen but that waits for proper quota setup */
1182 if (!(sb
->s_flags
& MS_RDONLY
)) {
1183 status
= ocfs2_enable_quotas(osb
);
1185 /* We have to err-out specially here because
1186 * s_root is already set */
1188 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1189 wake_up(&osb
->osb_mount_event
);
1194 ocfs2_complete_quota_recovery(osb
);
1196 /* Now we wake up again for processes waiting for quotas */
1197 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED_QUOTAS
);
1198 wake_up(&osb
->osb_mount_event
);
1200 /* Start this when the mount is almost sure of being successful */
1201 ocfs2_orphan_scan_start(osb
);
1203 /* Create filecheck sysfile /sys/fs/ocfs2/<devname>/filecheck */
1204 ocfs2_filecheck_create_sysfs(sb
);
1212 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1213 wake_up(&osb
->osb_mount_event
);
1214 ocfs2_dismount_volume(sb
, 1);
1222 static struct dentry
*ocfs2_mount(struct file_system_type
*fs_type
,
1224 const char *dev_name
,
1227 return mount_bdev(fs_type
, flags
, dev_name
, data
, ocfs2_fill_super
);
1230 static struct file_system_type ocfs2_fs_type
= {
1231 .owner
= THIS_MODULE
,
1233 .mount
= ocfs2_mount
,
1234 .kill_sb
= kill_block_super
,
1235 .fs_flags
= FS_REQUIRES_DEV
|FS_RENAME_DOES_D_MOVE
,
1238 MODULE_ALIAS_FS("ocfs2");
1240 static int ocfs2_check_set_options(struct super_block
*sb
,
1241 struct mount_options
*options
)
1243 if (options
->mount_opt
& OCFS2_MOUNT_USRQUOTA
&&
1244 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1245 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)) {
1246 mlog(ML_ERROR
, "User quotas were requested, but this "
1247 "filesystem does not have the feature enabled.\n");
1250 if (options
->mount_opt
& OCFS2_MOUNT_GRPQUOTA
&&
1251 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1252 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)) {
1253 mlog(ML_ERROR
, "Group quotas were requested, but this "
1254 "filesystem does not have the feature enabled.\n");
1257 if (options
->mount_opt
& OCFS2_MOUNT_POSIX_ACL
&&
1258 !OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
)) {
1259 mlog(ML_ERROR
, "ACL support requested but extended attributes "
1260 "feature is not enabled\n");
1263 /* No ACL setting specified? Use XATTR feature... */
1264 if (!(options
->mount_opt
& (OCFS2_MOUNT_POSIX_ACL
|
1265 OCFS2_MOUNT_NO_POSIX_ACL
))) {
1266 if (OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
))
1267 options
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1269 options
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1274 static int ocfs2_parse_options(struct super_block
*sb
,
1276 struct mount_options
*mopt
,
1279 int status
, user_stack
= 0;
1283 substring_t args
[MAX_OPT_ARGS
];
1285 trace_ocfs2_parse_options(is_remount
, options
? options
: "(none)");
1287 mopt
->commit_interval
= 0;
1288 mopt
->mount_opt
= OCFS2_MOUNT_NOINTR
;
1289 mopt
->atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
1290 mopt
->slot
= OCFS2_INVALID_SLOT
;
1291 mopt
->localalloc_opt
= -1;
1292 mopt
->cluster_stack
[0] = '\0';
1293 mopt
->resv_level
= OCFS2_DEFAULT_RESV_LEVEL
;
1294 mopt
->dir_resv_level
= -1;
1301 while ((p
= strsep(&options
, ",")) != NULL
) {
1305 token
= match_token(p
, tokens
, args
);
1308 mopt
->mount_opt
|= OCFS2_MOUNT_HB_LOCAL
;
1311 mopt
->mount_opt
|= OCFS2_MOUNT_HB_NONE
;
1314 mopt
->mount_opt
|= OCFS2_MOUNT_HB_GLOBAL
;
1317 if (match_int(&args
[0], &option
)) {
1322 mopt
->mount_opt
|= OCFS2_MOUNT_BARRIER
;
1324 mopt
->mount_opt
&= ~OCFS2_MOUNT_BARRIER
;
1327 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOINTR
;
1330 mopt
->mount_opt
|= OCFS2_MOUNT_NOINTR
;
1333 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_CONT
;
1334 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_ROFS
;
1335 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
1338 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_CONT
;
1339 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1340 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_ROFS
;
1343 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_ROFS
;
1344 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1345 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_CONT
;
1347 case Opt_data_ordered
:
1348 mopt
->mount_opt
&= ~OCFS2_MOUNT_DATA_WRITEBACK
;
1350 case Opt_data_writeback
:
1351 mopt
->mount_opt
|= OCFS2_MOUNT_DATA_WRITEBACK
;
1353 case Opt_user_xattr
:
1354 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOUSERXATTR
;
1356 case Opt_nouser_xattr
:
1357 mopt
->mount_opt
|= OCFS2_MOUNT_NOUSERXATTR
;
1359 case Opt_atime_quantum
:
1360 if (match_int(&args
[0], &option
)) {
1365 mopt
->atime_quantum
= option
;
1368 if (match_int(&args
[0], &option
)) {
1373 mopt
->slot
= (s16
)option
;
1376 if (match_int(&args
[0], &option
)) {
1383 option
= JBD2_DEFAULT_MAX_COMMIT_AGE
;
1384 mopt
->commit_interval
= HZ
* option
;
1386 case Opt_localalloc
:
1387 if (match_int(&args
[0], &option
)) {
1392 mopt
->localalloc_opt
= option
;
1394 case Opt_localflocks
:
1396 * Changing this during remount could race
1397 * flock() requests, or "unbalance" existing
1398 * ones (e.g., a lock is taken in one mode but
1399 * dropped in the other). If users care enough
1400 * to flip locking modes during remount, we
1401 * could add a "local" flag to individual
1402 * flock structures for proper tracking of
1406 mopt
->mount_opt
|= OCFS2_MOUNT_LOCALFLOCKS
;
1409 /* Check both that the option we were passed
1410 * is of the right length and that it is a proper
1411 * string of the right length.
1413 if (((args
[0].to
- args
[0].from
) !=
1414 OCFS2_STACK_LABEL_LEN
) ||
1415 (strnlen(args
[0].from
,
1416 OCFS2_STACK_LABEL_LEN
) !=
1417 OCFS2_STACK_LABEL_LEN
)) {
1419 "Invalid cluster_stack option\n");
1423 memcpy(mopt
->cluster_stack
, args
[0].from
,
1424 OCFS2_STACK_LABEL_LEN
);
1425 mopt
->cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
1427 * Open code the memcmp here as we don't have
1429 * ocfs2_userspace_stack().
1431 if (memcmp(mopt
->cluster_stack
,
1432 OCFS2_CLASSIC_CLUSTER_STACK
,
1433 OCFS2_STACK_LABEL_LEN
))
1437 mopt
->mount_opt
|= OCFS2_MOUNT_INODE64
;
1440 mopt
->mount_opt
|= OCFS2_MOUNT_USRQUOTA
;
1443 mopt
->mount_opt
|= OCFS2_MOUNT_GRPQUOTA
;
1445 case Opt_coherency_buffered
:
1446 mopt
->mount_opt
|= OCFS2_MOUNT_COHERENCY_BUFFERED
;
1448 case Opt_coherency_full
:
1449 mopt
->mount_opt
&= ~OCFS2_MOUNT_COHERENCY_BUFFERED
;
1452 mopt
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1453 mopt
->mount_opt
&= ~OCFS2_MOUNT_NO_POSIX_ACL
;
1456 mopt
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1457 mopt
->mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
1459 case Opt_resv_level
:
1462 if (match_int(&args
[0], &option
)) {
1466 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1467 option
< OCFS2_MAX_RESV_LEVEL
)
1468 mopt
->resv_level
= option
;
1470 case Opt_dir_resv_level
:
1473 if (match_int(&args
[0], &option
)) {
1477 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1478 option
< OCFS2_MAX_RESV_LEVEL
)
1479 mopt
->dir_resv_level
= option
;
1481 case Opt_journal_async_commit
:
1482 mopt
->mount_opt
|= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT
;
1486 "Unrecognized mount option \"%s\" "
1487 "or missing value\n", p
);
1493 if (user_stack
== 0) {
1494 /* Ensure only one heartbeat mode */
1495 tmp
= mopt
->mount_opt
& (OCFS2_MOUNT_HB_LOCAL
|
1496 OCFS2_MOUNT_HB_GLOBAL
|
1497 OCFS2_MOUNT_HB_NONE
);
1498 if (hweight32(tmp
) != 1) {
1499 mlog(ML_ERROR
, "Invalid heartbeat mount options\n");
1511 static int ocfs2_show_options(struct seq_file
*s
, struct dentry
*root
)
1513 struct ocfs2_super
*osb
= OCFS2_SB(root
->d_sb
);
1514 unsigned long opts
= osb
->s_mount_opt
;
1515 unsigned int local_alloc_megs
;
1517 if (opts
& (OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
)) {
1518 seq_printf(s
, ",_netdev");
1519 if (opts
& OCFS2_MOUNT_HB_LOCAL
)
1520 seq_printf(s
, ",%s", OCFS2_HB_LOCAL
);
1522 seq_printf(s
, ",%s", OCFS2_HB_GLOBAL
);
1524 seq_printf(s
, ",%s", OCFS2_HB_NONE
);
1526 if (opts
& OCFS2_MOUNT_NOINTR
)
1527 seq_printf(s
, ",nointr");
1529 if (opts
& OCFS2_MOUNT_DATA_WRITEBACK
)
1530 seq_printf(s
, ",data=writeback");
1532 seq_printf(s
, ",data=ordered");
1534 if (opts
& OCFS2_MOUNT_BARRIER
)
1535 seq_printf(s
, ",barrier=1");
1537 if (opts
& OCFS2_MOUNT_ERRORS_PANIC
)
1538 seq_printf(s
, ",errors=panic");
1539 else if (opts
& OCFS2_MOUNT_ERRORS_CONT
)
1540 seq_printf(s
, ",errors=continue");
1542 seq_printf(s
, ",errors=remount-ro");
1544 if (osb
->preferred_slot
!= OCFS2_INVALID_SLOT
)
1545 seq_printf(s
, ",preferred_slot=%d", osb
->preferred_slot
);
1547 seq_printf(s
, ",atime_quantum=%u", osb
->s_atime_quantum
);
1549 if (osb
->osb_commit_interval
)
1550 seq_printf(s
, ",commit=%u",
1551 (unsigned) (osb
->osb_commit_interval
/ HZ
));
1553 local_alloc_megs
= osb
->local_alloc_bits
>> (20 - osb
->s_clustersize_bits
);
1554 if (local_alloc_megs
!= ocfs2_la_default_mb(osb
))
1555 seq_printf(s
, ",localalloc=%d", local_alloc_megs
);
1557 if (opts
& OCFS2_MOUNT_LOCALFLOCKS
)
1558 seq_printf(s
, ",localflocks,");
1560 if (osb
->osb_cluster_stack
[0])
1561 seq_show_option_n(s
, "cluster_stack", osb
->osb_cluster_stack
,
1562 OCFS2_STACK_LABEL_LEN
);
1563 if (opts
& OCFS2_MOUNT_USRQUOTA
)
1564 seq_printf(s
, ",usrquota");
1565 if (opts
& OCFS2_MOUNT_GRPQUOTA
)
1566 seq_printf(s
, ",grpquota");
1568 if (opts
& OCFS2_MOUNT_COHERENCY_BUFFERED
)
1569 seq_printf(s
, ",coherency=buffered");
1571 seq_printf(s
, ",coherency=full");
1573 if (opts
& OCFS2_MOUNT_NOUSERXATTR
)
1574 seq_printf(s
, ",nouser_xattr");
1576 seq_printf(s
, ",user_xattr");
1578 if (opts
& OCFS2_MOUNT_INODE64
)
1579 seq_printf(s
, ",inode64");
1581 if (opts
& OCFS2_MOUNT_POSIX_ACL
)
1582 seq_printf(s
, ",acl");
1584 seq_printf(s
, ",noacl");
1586 if (osb
->osb_resv_level
!= OCFS2_DEFAULT_RESV_LEVEL
)
1587 seq_printf(s
, ",resv_level=%d", osb
->osb_resv_level
);
1589 if (osb
->osb_dir_resv_level
!= osb
->osb_resv_level
)
1590 seq_printf(s
, ",dir_resv_level=%d", osb
->osb_resv_level
);
1592 if (opts
& OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT
)
1593 seq_printf(s
, ",journal_async_commit");
1598 static int __init
ocfs2_init(void)
1602 status
= init_ocfs2_uptodate_cache();
1606 status
= ocfs2_initialize_mem_caches();
1610 ocfs2_debugfs_root
= debugfs_create_dir("ocfs2", NULL
);
1611 if (!ocfs2_debugfs_root
) {
1613 mlog(ML_ERROR
, "Unable to create ocfs2 debugfs root.\n");
1617 ocfs2_set_locking_protocol();
1619 status
= register_quota_format(&ocfs2_quota_format
);
1622 status
= register_filesystem(&ocfs2_fs_type
);
1626 unregister_quota_format(&ocfs2_quota_format
);
1628 debugfs_remove(ocfs2_debugfs_root
);
1629 ocfs2_free_mem_caches();
1631 exit_ocfs2_uptodate_cache();
1637 static void __exit
ocfs2_exit(void)
1639 unregister_quota_format(&ocfs2_quota_format
);
1641 debugfs_remove(ocfs2_debugfs_root
);
1643 ocfs2_free_mem_caches();
1645 unregister_filesystem(&ocfs2_fs_type
);
1647 exit_ocfs2_uptodate_cache();
1650 static void ocfs2_put_super(struct super_block
*sb
)
1652 trace_ocfs2_put_super(sb
);
1654 ocfs2_sync_blockdev(sb
);
1655 ocfs2_dismount_volume(sb
, 0);
1656 ocfs2_filecheck_remove_sysfs(sb
);
1659 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1661 struct ocfs2_super
*osb
;
1662 u32 numbits
, freebits
;
1664 struct ocfs2_dinode
*bm_lock
;
1665 struct buffer_head
*bh
= NULL
;
1666 struct inode
*inode
= NULL
;
1668 trace_ocfs2_statfs(dentry
->d_sb
, buf
);
1670 osb
= OCFS2_SB(dentry
->d_sb
);
1672 inode
= ocfs2_get_system_file_inode(osb
,
1673 GLOBAL_BITMAP_SYSTEM_INODE
,
1674 OCFS2_INVALID_SLOT
);
1676 mlog(ML_ERROR
, "failed to get bitmap inode\n");
1681 status
= ocfs2_inode_lock(inode
, &bh
, 0);
1687 bm_lock
= (struct ocfs2_dinode
*) bh
->b_data
;
1689 numbits
= le32_to_cpu(bm_lock
->id1
.bitmap1
.i_total
);
1690 freebits
= numbits
- le32_to_cpu(bm_lock
->id1
.bitmap1
.i_used
);
1692 buf
->f_type
= OCFS2_SUPER_MAGIC
;
1693 buf
->f_bsize
= dentry
->d_sb
->s_blocksize
;
1694 buf
->f_namelen
= OCFS2_MAX_FILENAME_LEN
;
1695 buf
->f_blocks
= ((sector_t
) numbits
) *
1696 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1697 buf
->f_bfree
= ((sector_t
) freebits
) *
1698 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1699 buf
->f_bavail
= buf
->f_bfree
;
1700 buf
->f_files
= numbits
;
1701 buf
->f_ffree
= freebits
;
1702 buf
->f_fsid
.val
[0] = crc32_le(0, osb
->uuid_str
, OCFS2_VOL_UUID_LEN
)
1704 buf
->f_fsid
.val
[1] = crc32_le(0, osb
->uuid_str
+ OCFS2_VOL_UUID_LEN
,
1705 OCFS2_VOL_UUID_LEN
) & 0xFFFFFFFFUL
;
1709 ocfs2_inode_unlock(inode
, 0);
1720 static void ocfs2_inode_init_once(void *data
)
1722 struct ocfs2_inode_info
*oi
= data
;
1725 oi
->ip_open_count
= 0;
1726 spin_lock_init(&oi
->ip_lock
);
1727 ocfs2_extent_map_init(&oi
->vfs_inode
);
1728 INIT_LIST_HEAD(&oi
->ip_io_markers
);
1729 INIT_LIST_HEAD(&oi
->ip_unwritten_list
);
1730 oi
->ip_dir_start_lookup
= 0;
1731 init_rwsem(&oi
->ip_alloc_sem
);
1732 init_rwsem(&oi
->ip_xattr_sem
);
1733 mutex_init(&oi
->ip_io_mutex
);
1735 oi
->ip_blkno
= 0ULL;
1736 oi
->ip_clusters
= 0;
1738 ocfs2_resv_init_once(&oi
->ip_la_data_resv
);
1740 ocfs2_lock_res_init_once(&oi
->ip_rw_lockres
);
1741 ocfs2_lock_res_init_once(&oi
->ip_inode_lockres
);
1742 ocfs2_lock_res_init_once(&oi
->ip_open_lockres
);
1744 ocfs2_metadata_cache_init(INODE_CACHE(&oi
->vfs_inode
),
1745 &ocfs2_inode_caching_ops
);
1747 inode_init_once(&oi
->vfs_inode
);
1750 static int ocfs2_initialize_mem_caches(void)
1752 ocfs2_inode_cachep
= kmem_cache_create("ocfs2_inode_cache",
1753 sizeof(struct ocfs2_inode_info
),
1755 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1756 SLAB_MEM_SPREAD
|SLAB_ACCOUNT
),
1757 ocfs2_inode_init_once
);
1758 ocfs2_dquot_cachep
= kmem_cache_create("ocfs2_dquot_cache",
1759 sizeof(struct ocfs2_dquot
),
1761 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1764 ocfs2_qf_chunk_cachep
= kmem_cache_create("ocfs2_qf_chunk_cache",
1765 sizeof(struct ocfs2_quota_chunk
),
1767 (SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
),
1769 if (!ocfs2_inode_cachep
|| !ocfs2_dquot_cachep
||
1770 !ocfs2_qf_chunk_cachep
) {
1771 if (ocfs2_inode_cachep
)
1772 kmem_cache_destroy(ocfs2_inode_cachep
);
1773 if (ocfs2_dquot_cachep
)
1774 kmem_cache_destroy(ocfs2_dquot_cachep
);
1775 if (ocfs2_qf_chunk_cachep
)
1776 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1783 static void ocfs2_free_mem_caches(void)
1786 * Make sure all delayed rcu free inodes are flushed before we
1790 if (ocfs2_inode_cachep
)
1791 kmem_cache_destroy(ocfs2_inode_cachep
);
1792 ocfs2_inode_cachep
= NULL
;
1794 if (ocfs2_dquot_cachep
)
1795 kmem_cache_destroy(ocfs2_dquot_cachep
);
1796 ocfs2_dquot_cachep
= NULL
;
1798 if (ocfs2_qf_chunk_cachep
)
1799 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1800 ocfs2_qf_chunk_cachep
= NULL
;
1803 static int ocfs2_get_sector(struct super_block
*sb
,
1804 struct buffer_head
**bh
,
1808 if (!sb_set_blocksize(sb
, sect_size
)) {
1809 mlog(ML_ERROR
, "unable to set blocksize\n");
1813 *bh
= sb_getblk(sb
, block
);
1815 mlog_errno(-ENOMEM
);
1819 if (!buffer_dirty(*bh
))
1820 clear_buffer_uptodate(*bh
);
1822 ll_rw_block(REQ_OP_READ
, 0, 1, bh
);
1823 wait_on_buffer(*bh
);
1824 if (!buffer_uptodate(*bh
)) {
1834 static int ocfs2_mount_volume(struct super_block
*sb
)
1837 int unlock_super
= 0;
1838 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1840 if (ocfs2_is_hard_readonly(osb
))
1843 status
= ocfs2_dlm_init(osb
);
1849 status
= ocfs2_super_lock(osb
, 1);
1856 /* This will load up the node map and add ourselves to it. */
1857 status
= ocfs2_find_slot(osb
);
1863 /* load all node-local system inodes */
1864 status
= ocfs2_init_local_system_inodes(osb
);
1870 status
= ocfs2_check_volume(osb
);
1876 status
= ocfs2_truncate_log_init(osb
);
1882 ocfs2_super_unlock(osb
, 1);
1887 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
)
1889 int tmp
, hangup_needed
= 0;
1890 struct ocfs2_super
*osb
= NULL
;
1893 trace_ocfs2_dismount_volume(sb
);
1899 debugfs_remove(osb
->osb_ctxt
);
1901 /* Orphan scan should be stopped as early as possible */
1902 ocfs2_orphan_scan_stop(osb
);
1904 ocfs2_disable_quotas(osb
);
1906 /* All dquots should be freed by now */
1907 WARN_ON(!llist_empty(&osb
->dquot_drop_list
));
1908 /* Wait for worker to be done with the work structure in osb */
1909 cancel_work_sync(&osb
->dquot_drop_work
);
1911 ocfs2_shutdown_local_alloc(osb
);
1913 ocfs2_truncate_log_shutdown(osb
);
1915 /* This will disable recovery and flush any recovery work. */
1916 ocfs2_recovery_exit(osb
);
1918 ocfs2_journal_shutdown(osb
);
1920 ocfs2_sync_blockdev(sb
);
1922 ocfs2_purge_refcount_trees(osb
);
1924 /* No cluster connection means we've failed during mount, so skip
1925 * all the steps which depended on that to complete. */
1927 tmp
= ocfs2_super_lock(osb
, 1);
1934 if (osb
->slot_num
!= OCFS2_INVALID_SLOT
)
1935 ocfs2_put_slot(osb
);
1938 ocfs2_super_unlock(osb
, 1);
1940 ocfs2_release_system_inodes(osb
);
1943 * If we're dismounting due to mount error, mount.ocfs2 will clean
1944 * up heartbeat. If we're a local mount, there is no heartbeat.
1945 * If we failed before we got a uuid_str yet, we can't stop
1946 * heartbeat. Otherwise, do it.
1948 if (!mnt_err
&& !ocfs2_mount_local(osb
) && osb
->uuid_str
&&
1949 !ocfs2_is_hard_readonly(osb
))
1953 ocfs2_dlm_shutdown(osb
, hangup_needed
);
1955 ocfs2_blockcheck_stats_debugfs_remove(&osb
->osb_ecc_stats
);
1956 debugfs_remove(osb
->osb_debug_root
);
1959 ocfs2_cluster_hangup(osb
->uuid_str
, strlen(osb
->uuid_str
));
1961 atomic_set(&osb
->vol_state
, VOLUME_DISMOUNTED
);
1963 if (ocfs2_mount_local(osb
))
1964 snprintf(nodestr
, sizeof(nodestr
), "local");
1966 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1968 printk(KERN_INFO
"ocfs2: Unmounting device (%s) on (node %s)\n",
1969 osb
->dev_str
, nodestr
);
1971 ocfs2_delete_osb(osb
);
1974 sb
->s_fs_info
= NULL
;
1977 static int ocfs2_setup_osb_uuid(struct ocfs2_super
*osb
, const unsigned char *uuid
,
1978 unsigned uuid_bytes
)
1983 BUG_ON(uuid_bytes
!= OCFS2_VOL_UUID_LEN
);
1985 osb
->uuid_str
= kzalloc(OCFS2_VOL_UUID_LEN
* 2 + 1, GFP_KERNEL
);
1986 if (osb
->uuid_str
== NULL
)
1989 for (i
= 0, ptr
= osb
->uuid_str
; i
< OCFS2_VOL_UUID_LEN
; i
++) {
1990 /* print with null */
1991 ret
= snprintf(ptr
, 3, "%02X", uuid
[i
]);
1992 if (ret
!= 2) /* drop super cleans up */
1994 /* then only advance past the last char */
2001 /* Make sure entire volume is addressable by our journal. Requires
2002 osb_clusters_at_boot to be valid and for the journal to have been
2003 initialized by ocfs2_journal_init(). */
2004 static int ocfs2_journal_addressable(struct ocfs2_super
*osb
)
2008 ocfs2_clusters_to_blocks(osb
->sb
,
2009 osb
->osb_clusters_at_boot
) - 1;
2011 /* 32-bit block number is always OK. */
2012 if (max_block
<= (u32
)~0ULL)
2015 /* Volume is "huge", so see if our journal is new enough to
2017 if (!(OCFS2_HAS_COMPAT_FEATURE(osb
->sb
,
2018 OCFS2_FEATURE_COMPAT_JBD2_SB
) &&
2019 jbd2_journal_check_used_features(osb
->journal
->j_journal
, 0, 0,
2020 JBD2_FEATURE_INCOMPAT_64BIT
))) {
2021 mlog(ML_ERROR
, "The journal cannot address the entire volume. "
2022 "Enable the 'block64' journal option with tunefs.ocfs2");
2031 static int ocfs2_initialize_super(struct super_block
*sb
,
2032 struct buffer_head
*bh
,
2034 struct ocfs2_blockcheck_stats
*stats
)
2037 int i
, cbits
, bbits
;
2038 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*)bh
->b_data
;
2039 struct inode
*inode
= NULL
;
2040 struct ocfs2_journal
*journal
;
2041 struct ocfs2_super
*osb
;
2044 osb
= kzalloc(sizeof(struct ocfs2_super
), GFP_KERNEL
);
2051 sb
->s_fs_info
= osb
;
2052 sb
->s_op
= &ocfs2_sops
;
2053 sb
->s_d_op
= &ocfs2_dentry_ops
;
2054 sb
->s_export_op
= &ocfs2_export_ops
;
2055 sb
->s_qcop
= &dquot_quotactl_sysfile_ops
;
2056 sb
->dq_op
= &ocfs2_quota_operations
;
2057 sb
->s_quota_types
= QTYPE_MASK_USR
| QTYPE_MASK_GRP
;
2058 sb
->s_xattr
= ocfs2_xattr_handlers
;
2059 sb
->s_time_gran
= 1;
2060 sb
->s_flags
|= MS_NOATIME
;
2061 /* this is needed to support O_LARGEFILE */
2062 cbits
= le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2063 bbits
= le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
);
2064 sb
->s_maxbytes
= ocfs2_max_file_offset(bbits
, cbits
);
2065 memcpy(sb
->s_uuid
, di
->id2
.i_super
.s_uuid
,
2066 sizeof(di
->id2
.i_super
.s_uuid
));
2068 osb
->osb_dx_mask
= (1 << (cbits
- bbits
)) - 1;
2070 for (i
= 0; i
< 3; i
++)
2071 osb
->osb_dx_seed
[i
] = le32_to_cpu(di
->id2
.i_super
.s_dx_seed
[i
]);
2072 osb
->osb_dx_seed
[3] = le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2075 osb
->s_sectsize_bits
= blksize_bits(sector_size
);
2076 BUG_ON(!osb
->s_sectsize_bits
);
2078 spin_lock_init(&osb
->dc_task_lock
);
2079 init_waitqueue_head(&osb
->dc_event
);
2080 osb
->dc_work_sequence
= 0;
2081 osb
->dc_wake_sequence
= 0;
2082 INIT_LIST_HEAD(&osb
->blocked_lock_list
);
2083 osb
->blocked_lock_count
= 0;
2084 spin_lock_init(&osb
->osb_lock
);
2085 spin_lock_init(&osb
->osb_xattr_lock
);
2086 ocfs2_init_steal_slots(osb
);
2088 mutex_init(&osb
->system_file_mutex
);
2090 atomic_set(&osb
->alloc_stats
.moves
, 0);
2091 atomic_set(&osb
->alloc_stats
.local_data
, 0);
2092 atomic_set(&osb
->alloc_stats
.bitmap_data
, 0);
2093 atomic_set(&osb
->alloc_stats
.bg_allocs
, 0);
2094 atomic_set(&osb
->alloc_stats
.bg_extends
, 0);
2096 /* Copy the blockcheck stats from the superblock probe */
2097 osb
->osb_ecc_stats
= *stats
;
2099 ocfs2_init_node_maps(osb
);
2101 snprintf(osb
->dev_str
, sizeof(osb
->dev_str
), "%u,%u",
2102 MAJOR(osb
->sb
->s_dev
), MINOR(osb
->sb
->s_dev
));
2104 osb
->max_slots
= le16_to_cpu(di
->id2
.i_super
.s_max_slots
);
2105 if (osb
->max_slots
> OCFS2_MAX_SLOTS
|| osb
->max_slots
== 0) {
2106 mlog(ML_ERROR
, "Invalid number of node slots (%u)\n",
2112 ocfs2_orphan_scan_init(osb
);
2114 status
= ocfs2_recovery_init(osb
);
2116 mlog(ML_ERROR
, "Unable to initialize recovery state\n");
2121 init_waitqueue_head(&osb
->checkpoint_event
);
2123 osb
->s_atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
2125 osb
->slot_num
= OCFS2_INVALID_SLOT
;
2127 osb
->s_xattr_inline_size
= le16_to_cpu(
2128 di
->id2
.i_super
.s_xattr_inline_size
);
2130 osb
->local_alloc_state
= OCFS2_LA_UNUSED
;
2131 osb
->local_alloc_bh
= NULL
;
2132 INIT_DELAYED_WORK(&osb
->la_enable_wq
, ocfs2_la_enable_worker
);
2134 init_waitqueue_head(&osb
->osb_mount_event
);
2136 status
= ocfs2_resmap_init(osb
, &osb
->osb_la_resmap
);
2142 osb
->vol_label
= kmalloc(OCFS2_MAX_VOL_LABEL_LEN
, GFP_KERNEL
);
2143 if (!osb
->vol_label
) {
2144 mlog(ML_ERROR
, "unable to alloc vol label\n");
2149 osb
->slot_recovery_generations
=
2150 kcalloc(osb
->max_slots
, sizeof(*osb
->slot_recovery_generations
),
2152 if (!osb
->slot_recovery_generations
) {
2158 init_waitqueue_head(&osb
->osb_wipe_event
);
2159 osb
->osb_orphan_wipes
= kcalloc(osb
->max_slots
,
2160 sizeof(*osb
->osb_orphan_wipes
),
2162 if (!osb
->osb_orphan_wipes
) {
2168 osb
->osb_rf_lock_tree
= RB_ROOT
;
2170 osb
->s_feature_compat
=
2171 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_compat
);
2172 osb
->s_feature_ro_compat
=
2173 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_ro_compat
);
2174 osb
->s_feature_incompat
=
2175 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_incompat
);
2177 if ((i
= OCFS2_HAS_INCOMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_INCOMPAT_SUPP
))) {
2178 mlog(ML_ERROR
, "couldn't mount because of unsupported "
2179 "optional features (%x).\n", i
);
2183 if (!(osb
->sb
->s_flags
& MS_RDONLY
) &&
2184 (i
= OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
))) {
2185 mlog(ML_ERROR
, "couldn't mount RDWR because of "
2186 "unsupported optional features (%x).\n", i
);
2191 if (ocfs2_clusterinfo_valid(osb
)) {
2192 osb
->osb_stackflags
=
2193 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stackflags
;
2194 strlcpy(osb
->osb_cluster_stack
,
2195 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stack
,
2196 OCFS2_STACK_LABEL_LEN
+ 1);
2197 if (strlen(osb
->osb_cluster_stack
) != OCFS2_STACK_LABEL_LEN
) {
2199 "couldn't mount because of an invalid "
2200 "cluster stack label (%s) \n",
2201 osb
->osb_cluster_stack
);
2205 strlcpy(osb
->osb_cluster_name
,
2206 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_cluster
,
2207 OCFS2_CLUSTER_NAME_LEN
+ 1);
2209 /* The empty string is identical with classic tools that
2210 * don't know about s_cluster_info. */
2211 osb
->osb_cluster_stack
[0] = '\0';
2214 get_random_bytes(&osb
->s_next_generation
, sizeof(u32
));
2217 * This should be done in ocfs2_journal_init(), but unknown
2218 * ordering issues will cause the filesystem to crash.
2219 * If anyone wants to figure out what part of the code
2220 * refers to osb->journal before ocfs2_journal_init() is run,
2223 /* initialize our journal structure */
2225 journal
= kzalloc(sizeof(struct ocfs2_journal
), GFP_KERNEL
);
2227 mlog(ML_ERROR
, "unable to alloc journal\n");
2231 osb
->journal
= journal
;
2232 journal
->j_osb
= osb
;
2234 atomic_set(&journal
->j_num_trans
, 0);
2235 init_rwsem(&journal
->j_trans_barrier
);
2236 init_waitqueue_head(&journal
->j_checkpointed
);
2237 spin_lock_init(&journal
->j_lock
);
2238 journal
->j_trans_id
= (unsigned long) 1;
2239 INIT_LIST_HEAD(&journal
->j_la_cleanups
);
2240 INIT_WORK(&journal
->j_recovery_work
, ocfs2_complete_recovery
);
2241 journal
->j_state
= OCFS2_JOURNAL_FREE
;
2243 INIT_WORK(&osb
->dquot_drop_work
, ocfs2_drop_dquot_refs
);
2244 init_llist_head(&osb
->dquot_drop_list
);
2246 /* get some pseudo constants for clustersize bits */
2247 osb
->s_clustersize_bits
=
2248 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2249 osb
->s_clustersize
= 1 << osb
->s_clustersize_bits
;
2251 if (osb
->s_clustersize
< OCFS2_MIN_CLUSTERSIZE
||
2252 osb
->s_clustersize
> OCFS2_MAX_CLUSTERSIZE
) {
2253 mlog(ML_ERROR
, "Volume has invalid cluster size (%d)\n",
2254 osb
->s_clustersize
);
2259 total_blocks
= ocfs2_clusters_to_blocks(osb
->sb
,
2260 le32_to_cpu(di
->i_clusters
));
2262 status
= generic_check_addressable(osb
->sb
->s_blocksize_bits
,
2265 mlog(ML_ERROR
, "Volume too large "
2266 "to mount safely on this system");
2271 if (ocfs2_setup_osb_uuid(osb
, di
->id2
.i_super
.s_uuid
,
2272 sizeof(di
->id2
.i_super
.s_uuid
))) {
2273 mlog(ML_ERROR
, "Out of memory trying to setup our uuid.\n");
2278 strlcpy(osb
->vol_label
, di
->id2
.i_super
.s_label
,
2279 OCFS2_MAX_VOL_LABEL_LEN
);
2280 osb
->root_blkno
= le64_to_cpu(di
->id2
.i_super
.s_root_blkno
);
2281 osb
->system_dir_blkno
= le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
);
2282 osb
->first_cluster_group_blkno
=
2283 le64_to_cpu(di
->id2
.i_super
.s_first_cluster_group
);
2284 osb
->fs_generation
= le32_to_cpu(di
->i_fs_generation
);
2285 osb
->uuid_hash
= le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2286 trace_ocfs2_initialize_super(osb
->vol_label
, osb
->uuid_str
,
2287 (unsigned long long)osb
->root_blkno
,
2288 (unsigned long long)osb
->system_dir_blkno
,
2289 osb
->s_clustersize_bits
);
2291 osb
->osb_dlm_debug
= ocfs2_new_dlm_debug();
2292 if (!osb
->osb_dlm_debug
) {
2298 atomic_set(&osb
->vol_state
, VOLUME_INIT
);
2300 /* load root, system_dir, and all global system inodes */
2301 status
= ocfs2_init_global_system_inodes(osb
);
2310 inode
= ocfs2_get_system_file_inode(osb
, GLOBAL_BITMAP_SYSTEM_INODE
,
2311 OCFS2_INVALID_SLOT
);
2318 osb
->bitmap_blkno
= OCFS2_I(inode
)->ip_blkno
;
2319 osb
->osb_clusters_at_boot
= OCFS2_I(inode
)->ip_clusters
;
2322 osb
->bitmap_cpg
= ocfs2_group_bitmap_size(sb
, 0,
2323 osb
->s_feature_incompat
) * 8;
2325 status
= ocfs2_init_slot_info(osb
);
2330 cleancache_init_shared_fs(sb
);
2332 osb
->ocfs2_wq
= alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM
);
2333 if (!osb
->ocfs2_wq
) {
2343 * will return: -EAGAIN if it is ok to keep searching for superblocks
2344 * -EINVAL if there is a bad superblock
2347 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
2348 struct buffer_head
*bh
,
2350 struct ocfs2_blockcheck_stats
*stats
)
2352 int status
= -EAGAIN
;
2354 if (memcmp(di
->i_signature
, OCFS2_SUPER_BLOCK_SIGNATURE
,
2355 strlen(OCFS2_SUPER_BLOCK_SIGNATURE
)) == 0) {
2356 /* We have to do a raw check of the feature here */
2357 if (le32_to_cpu(di
->id2
.i_super
.s_feature_incompat
) &
2358 OCFS2_FEATURE_INCOMPAT_META_ECC
) {
2359 status
= ocfs2_block_check_validate(bh
->b_data
,
2367 if ((1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
)) != blksz
) {
2368 mlog(ML_ERROR
, "found superblock with incorrect block "
2369 "size: found %u, should be %u\n",
2370 1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
),
2372 } else if (le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
) !=
2373 OCFS2_MAJOR_REV_LEVEL
||
2374 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
) !=
2375 OCFS2_MINOR_REV_LEVEL
) {
2376 mlog(ML_ERROR
, "found superblock with bad version: "
2377 "found %u.%u, should be %u.%u\n",
2378 le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
),
2379 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
),
2380 OCFS2_MAJOR_REV_LEVEL
,
2381 OCFS2_MINOR_REV_LEVEL
);
2382 } else if (bh
->b_blocknr
!= le64_to_cpu(di
->i_blkno
)) {
2383 mlog(ML_ERROR
, "bad block number on superblock: "
2384 "found %llu, should be %llu\n",
2385 (unsigned long long)le64_to_cpu(di
->i_blkno
),
2386 (unsigned long long)bh
->b_blocknr
);
2387 } else if (le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) < 12 ||
2388 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) > 20) {
2389 mlog(ML_ERROR
, "bad cluster size found: %u\n",
2390 1 << le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
));
2391 } else if (!le64_to_cpu(di
->id2
.i_super
.s_root_blkno
)) {
2392 mlog(ML_ERROR
, "bad root_blkno: 0\n");
2393 } else if (!le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
)) {
2394 mlog(ML_ERROR
, "bad system_dir_blkno: 0\n");
2395 } else if (le16_to_cpu(di
->id2
.i_super
.s_max_slots
) > OCFS2_MAX_SLOTS
) {
2397 "Superblock slots found greater than file system "
2398 "maximum: found %u, max %u\n",
2399 le16_to_cpu(di
->id2
.i_super
.s_max_slots
),
2408 if (status
&& status
!= -EAGAIN
)
2413 static int ocfs2_check_volume(struct ocfs2_super
*osb
)
2418 struct ocfs2_dinode
*local_alloc
= NULL
; /* only used if we
2422 /* Init our journal object. */
2423 status
= ocfs2_journal_init(osb
->journal
, &dirty
);
2425 mlog(ML_ERROR
, "Could not initialize journal!\n");
2429 /* Now that journal has been initialized, check to make sure
2430 entire volume is addressable. */
2431 status
= ocfs2_journal_addressable(osb
);
2435 /* If the journal was unmounted cleanly then we don't want to
2436 * recover anything. Otherwise, journal_load will do that
2437 * dirty work for us :) */
2439 status
= ocfs2_journal_wipe(osb
->journal
, 0);
2445 printk(KERN_NOTICE
"ocfs2: File system on device (%s) was not "
2446 "unmounted cleanly, recovering it.\n", osb
->dev_str
);
2449 local
= ocfs2_mount_local(osb
);
2451 /* will play back anything left in the journal. */
2452 status
= ocfs2_journal_load(osb
->journal
, local
, dirty
);
2454 mlog(ML_ERROR
, "ocfs2 journal load failed! %d\n", status
);
2458 if (osb
->s_mount_opt
& OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT
)
2459 jbd2_journal_set_features(osb
->journal
->j_journal
,
2460 JBD2_FEATURE_COMPAT_CHECKSUM
, 0,
2461 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT
);
2463 jbd2_journal_clear_features(osb
->journal
->j_journal
,
2464 JBD2_FEATURE_COMPAT_CHECKSUM
, 0,
2465 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT
);
2468 /* recover my local alloc if we didn't unmount cleanly. */
2469 status
= ocfs2_begin_local_alloc_recovery(osb
,
2476 /* we complete the recovery process after we've marked
2477 * ourselves as mounted. */
2480 status
= ocfs2_load_local_alloc(osb
);
2487 /* Recovery will be completed after we've mounted the
2488 * rest of the volume. */
2490 osb
->local_alloc_copy
= local_alloc
;
2494 /* go through each journal, trylock it and if you get the
2495 * lock, and it's marked as dirty, set the bit in the recover
2496 * map and launch a recovery thread for it. */
2497 status
= ocfs2_mark_dead_nodes(osb
);
2503 status
= ocfs2_compute_replay_slots(osb
);
2516 * The routine gets called from dismount or close whenever a dismount on
2517 * volume is requested and the osb open count becomes 1.
2518 * It will remove the osb from the global list and also free up all the
2519 * initialized resources and fileobject.
2521 static void ocfs2_delete_osb(struct ocfs2_super
*osb
)
2523 /* This function assumes that the caller has the main osb resource */
2525 /* ocfs2_initializer_super have already created this workqueue */
2526 if (osb
->ocfs2_wq
) {
2527 flush_workqueue(osb
->ocfs2_wq
);
2528 destroy_workqueue(osb
->ocfs2_wq
);
2531 ocfs2_free_slot_info(osb
);
2533 kfree(osb
->osb_orphan_wipes
);
2534 kfree(osb
->slot_recovery_generations
);
2536 * This belongs in journal shutdown, but because we have to
2537 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2540 kfree(osb
->journal
);
2541 kfree(osb
->local_alloc_copy
);
2542 kfree(osb
->uuid_str
);
2543 kfree(osb
->vol_label
);
2544 ocfs2_put_dlm_debug(osb
->osb_dlm_debug
);
2545 memset(osb
, 0, sizeof(struct ocfs2_super
));
2548 /* Depending on the mount option passed, perform one of the following:
2549 * Put OCFS2 into a readonly state (default)
2550 * Return EIO so that only the process errs
2551 * Fix the error as if fsck.ocfs2 -y
2554 static int ocfs2_handle_error(struct super_block
*sb
)
2556 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
2559 ocfs2_set_osb_flag(osb
, OCFS2_OSB_ERROR_FS
);
2560 pr_crit("On-disk corruption discovered. "
2561 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
2563 if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_PANIC
) {
2564 panic("OCFS2: (device %s): panic forced after error\n",
2566 } else if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_CONT
) {
2567 pr_crit("OCFS2: Returning error to the calling process.\n");
2569 } else { /* default option */
2571 if (sb
->s_flags
& MS_RDONLY
&&
2572 (ocfs2_is_soft_readonly(osb
) ||
2573 ocfs2_is_hard_readonly(osb
)))
2576 pr_crit("OCFS2: File system is now read-only.\n");
2577 sb
->s_flags
|= MS_RDONLY
;
2578 ocfs2_set_ro_flag(osb
, 0);
2584 int __ocfs2_error(struct super_block
*sb
, const char *function
,
2585 const char *fmt
, ...)
2587 struct va_format vaf
;
2590 va_start(args
, fmt
);
2594 /* Not using mlog here because we want to show the actual
2595 * function the error came from. */
2596 printk(KERN_CRIT
"OCFS2: ERROR (device %s): %s: %pV",
2597 sb
->s_id
, function
, &vaf
);
2601 return ocfs2_handle_error(sb
);
2604 /* Handle critical errors. This is intentionally more drastic than
2605 * ocfs2_handle_error, so we only use for things like journal errors,
2607 void __ocfs2_abort(struct super_block
*sb
, const char *function
,
2608 const char *fmt
, ...)
2610 struct va_format vaf
;
2613 va_start(args
, fmt
);
2618 printk(KERN_CRIT
"OCFS2: abort (device %s): %s: %pV",
2619 sb
->s_id
, function
, &vaf
);
2623 /* We don't have the cluster support yet to go straight to
2624 * hard readonly in here. Until then, we want to keep
2625 * ocfs2_abort() so that we can at least mark critical
2628 * TODO: This should abort the journal and alert other nodes
2629 * that our slot needs recovery. */
2631 /* Force a panic(). This stinks, but it's better than letting
2632 * things continue without having a proper hard readonly
2634 if (!ocfs2_mount_local(OCFS2_SB(sb
)))
2635 OCFS2_SB(sb
)->s_mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
2636 ocfs2_handle_error(sb
);
2640 * Void signal blockers, because in-kernel sigprocmask() only fails
2641 * when SIG_* is wrong.
2643 void ocfs2_block_signals(sigset_t
*oldset
)
2648 sigfillset(&blocked
);
2649 rc
= sigprocmask(SIG_BLOCK
, &blocked
, oldset
);
2653 void ocfs2_unblock_signals(sigset_t
*oldset
)
2655 int rc
= sigprocmask(SIG_SETMASK
, oldset
, NULL
);
2659 module_init(ocfs2_init
);
2660 module_exit(ocfs2_exit
);