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/utsname.h>
32 #include <linux/init.h>
33 #include <linux/random.h>
34 #include <linux/statfs.h>
35 #include <linux/moduleparam.h>
36 #include <linux/blkdev.h>
37 #include <linux/socket.h>
38 #include <linux/inet.h>
39 #include <linux/parser.h>
40 #include <linux/crc32.h>
41 #include <linux/debugfs.h>
42 #include <linux/mount.h>
43 #include <linux/seq_file.h>
44 #include <linux/quotaops.h>
46 #define MLOG_MASK_PREFIX ML_SUPER
47 #include <cluster/masklog.h>
51 /* this should be the only file to include a version 1 header */
52 #include "ocfs1_fs_compat.h"
55 #include "blockcheck.h"
58 #include "extent_map.h"
59 #include "heartbeat.h"
62 #include "localalloc.h"
72 #include "buffer_head_io.h"
74 static struct kmem_cache
*ocfs2_inode_cachep
= NULL
;
75 struct kmem_cache
*ocfs2_dquot_cachep
;
76 struct kmem_cache
*ocfs2_qf_chunk_cachep
;
78 /* OCFS2 needs to schedule several differnt types of work which
79 * require cluster locking, disk I/O, recovery waits, etc. Since these
80 * types of work tend to be heavy we avoid using the kernel events
81 * workqueue and schedule on our own. */
82 struct workqueue_struct
*ocfs2_wq
= NULL
;
84 static struct dentry
*ocfs2_debugfs_root
= NULL
;
86 MODULE_AUTHOR("Oracle");
87 MODULE_LICENSE("GPL");
91 unsigned long commit_interval
;
92 unsigned long mount_opt
;
93 unsigned int atime_quantum
;
95 unsigned int localalloc_opt
;
96 char cluster_stack
[OCFS2_STACK_LABEL_LEN
+ 1];
99 static int ocfs2_parse_options(struct super_block
*sb
, char *options
,
100 struct mount_options
*mopt
,
102 static int ocfs2_show_options(struct seq_file
*s
, struct vfsmount
*mnt
);
103 static void ocfs2_put_super(struct super_block
*sb
);
104 static int ocfs2_mount_volume(struct super_block
*sb
);
105 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
);
106 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
);
107 static int ocfs2_initialize_mem_caches(void);
108 static void ocfs2_free_mem_caches(void);
109 static void ocfs2_delete_osb(struct ocfs2_super
*osb
);
111 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
);
113 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
);
115 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
);
116 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
);
117 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
);
118 static int ocfs2_check_volume(struct ocfs2_super
*osb
);
119 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
120 struct buffer_head
*bh
,
122 static int ocfs2_initialize_super(struct super_block
*sb
,
123 struct buffer_head
*bh
,
125 static int ocfs2_get_sector(struct super_block
*sb
,
126 struct buffer_head
**bh
,
129 static void ocfs2_write_super(struct super_block
*sb
);
130 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
);
131 static void ocfs2_destroy_inode(struct inode
*inode
);
132 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
);
133 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
);
134 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
);
136 static const struct super_operations ocfs2_sops
= {
137 .statfs
= ocfs2_statfs
,
138 .alloc_inode
= ocfs2_alloc_inode
,
139 .destroy_inode
= ocfs2_destroy_inode
,
140 .drop_inode
= ocfs2_drop_inode
,
141 .clear_inode
= ocfs2_clear_inode
,
142 .delete_inode
= ocfs2_delete_inode
,
143 .sync_fs
= ocfs2_sync_fs
,
144 .write_super
= ocfs2_write_super
,
145 .put_super
= ocfs2_put_super
,
146 .remount_fs
= ocfs2_remount
,
147 .show_options
= ocfs2_show_options
,
148 .quota_read
= ocfs2_quota_read
,
149 .quota_write
= ocfs2_quota_write
,
178 static const match_table_t tokens
= {
179 {Opt_barrier
, "barrier=%u"},
180 {Opt_err_panic
, "errors=panic"},
181 {Opt_err_ro
, "errors=remount-ro"},
183 {Opt_nointr
, "nointr"},
184 {Opt_hb_none
, OCFS2_HB_NONE
},
185 {Opt_hb_local
, OCFS2_HB_LOCAL
},
186 {Opt_data_ordered
, "data=ordered"},
187 {Opt_data_writeback
, "data=writeback"},
188 {Opt_atime_quantum
, "atime_quantum=%u"},
189 {Opt_slot
, "preferred_slot=%u"},
190 {Opt_commit
, "commit=%u"},
191 {Opt_localalloc
, "localalloc=%d"},
192 {Opt_localflocks
, "localflocks"},
193 {Opt_stack
, "cluster_stack=%s"},
194 {Opt_user_xattr
, "user_xattr"},
195 {Opt_nouser_xattr
, "nouser_xattr"},
196 {Opt_inode64
, "inode64"},
198 {Opt_noacl
, "noacl"},
199 {Opt_usrquota
, "usrquota"},
200 {Opt_grpquota
, "grpquota"},
204 #ifdef CONFIG_DEBUG_FS
205 static int ocfs2_osb_dump(struct ocfs2_super
*osb
, char *buf
, int len
)
209 struct ocfs2_cluster_connection
*cconn
= osb
->cconn
;
210 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
212 out
+= snprintf(buf
+ out
, len
- out
,
213 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
214 "Device", osb
->dev_str
, osb
->uuid_str
,
215 osb
->fs_generation
, osb
->vol_label
);
217 out
+= snprintf(buf
+ out
, len
- out
,
218 "%10s => State: %d Flags: 0x%lX\n", "Volume",
219 atomic_read(&osb
->vol_state
), osb
->osb_flags
);
221 out
+= snprintf(buf
+ out
, len
- out
,
222 "%10s => Block: %lu Cluster: %d\n", "Sizes",
223 osb
->sb
->s_blocksize
, osb
->s_clustersize
);
225 out
+= snprintf(buf
+ out
, len
- out
,
226 "%10s => Compat: 0x%X Incompat: 0x%X "
228 "Features", osb
->s_feature_compat
,
229 osb
->s_feature_incompat
, osb
->s_feature_ro_compat
);
231 out
+= snprintf(buf
+ out
, len
- out
,
232 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
233 osb
->s_mount_opt
, osb
->s_atime_quantum
);
236 out
+= snprintf(buf
+ out
, len
- out
,
237 "%10s => Stack: %s Name: %*s "
238 "Version: %d.%d\n", "Cluster",
239 (*osb
->osb_cluster_stack
== '\0' ?
240 "o2cb" : osb
->osb_cluster_stack
),
241 cconn
->cc_namelen
, cconn
->cc_name
,
242 cconn
->cc_version
.pv_major
,
243 cconn
->cc_version
.pv_minor
);
246 spin_lock(&osb
->dc_task_lock
);
247 out
+= snprintf(buf
+ out
, len
- out
,
248 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
249 "WorkSeq: %lu\n", "DownCnvt",
250 (osb
->dc_task
? task_pid_nr(osb
->dc_task
) : -1),
251 osb
->blocked_lock_count
, osb
->dc_wake_sequence
,
252 osb
->dc_work_sequence
);
253 spin_unlock(&osb
->dc_task_lock
);
255 spin_lock(&osb
->osb_lock
);
256 out
+= snprintf(buf
+ out
, len
- out
, "%10s => Pid: %d Nodes:",
258 (osb
->recovery_thread_task
?
259 task_pid_nr(osb
->recovery_thread_task
) : -1));
260 if (rm
->rm_used
== 0)
261 out
+= snprintf(buf
+ out
, len
- out
, " None\n");
263 for (i
= 0; i
< rm
->rm_used
; i
++)
264 out
+= snprintf(buf
+ out
, len
- out
, " %d",
266 out
+= snprintf(buf
+ out
, len
- out
, "\n");
268 spin_unlock(&osb
->osb_lock
);
270 out
+= snprintf(buf
+ out
, len
- out
,
271 "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit",
272 (osb
->commit_task
? task_pid_nr(osb
->commit_task
) : -1),
273 osb
->osb_commit_interval
,
274 atomic_read(&osb
->needs_checkpoint
));
276 out
+= snprintf(buf
+ out
, len
- out
,
277 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
278 "Journal", osb
->journal
->j_state
,
279 osb
->journal
->j_trans_id
,
280 atomic_read(&osb
->journal
->j_num_trans
));
282 out
+= snprintf(buf
+ out
, len
- out
,
283 "%10s => GlobalAllocs: %d LocalAllocs: %d "
284 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
286 atomic_read(&osb
->alloc_stats
.bitmap_data
),
287 atomic_read(&osb
->alloc_stats
.local_data
),
288 atomic_read(&osb
->alloc_stats
.bg_allocs
),
289 atomic_read(&osb
->alloc_stats
.moves
),
290 atomic_read(&osb
->alloc_stats
.bg_extends
));
292 out
+= snprintf(buf
+ out
, len
- out
,
293 "%10s => State: %u Descriptor: %llu Size: %u bits "
294 "Default: %u bits\n",
295 "LocalAlloc", osb
->local_alloc_state
,
296 (unsigned long long)osb
->la_last_gd
,
297 osb
->local_alloc_bits
, osb
->local_alloc_default_bits
);
299 spin_lock(&osb
->osb_lock
);
300 out
+= snprintf(buf
+ out
, len
- out
,
301 "%10s => Slot: %d NumStolen: %d\n", "Steal",
302 osb
->s_inode_steal_slot
,
303 atomic_read(&osb
->s_num_inodes_stolen
));
304 spin_unlock(&osb
->osb_lock
);
306 out
+= snprintf(buf
+ out
, len
- out
, "%10s => %3s %10s\n",
307 "Slots", "Num", "RecoGen");
308 for (i
= 0; i
< osb
->max_slots
; ++i
) {
309 out
+= snprintf(buf
+ out
, len
- out
,
310 "%10s %c %3d %10d\n",
312 (i
== osb
->slot_num
? '*' : ' '),
313 i
, osb
->slot_recovery_generations
[i
]);
319 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
321 struct ocfs2_super
*osb
= inode
->i_private
;
324 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
328 i_size_write(inode
, ocfs2_osb_dump(osb
, buf
, PAGE_SIZE
));
330 file
->private_data
= buf
;
337 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
339 kfree(file
->private_data
);
343 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
344 size_t nbytes
, loff_t
*ppos
)
346 return simple_read_from_buffer(buf
, nbytes
, ppos
, file
->private_data
,
347 i_size_read(file
->f_mapping
->host
));
350 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
354 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
358 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
359 size_t nbytes
, loff_t
*ppos
)
363 #endif /* CONFIG_DEBUG_FS */
365 static struct file_operations ocfs2_osb_debug_fops
= {
366 .open
= ocfs2_osb_debug_open
,
367 .release
= ocfs2_debug_release
,
368 .read
= ocfs2_debug_read
,
369 .llseek
= generic_file_llseek
,
373 * write_super and sync_fs ripped right out of ext3.
375 static void ocfs2_write_super(struct super_block
*sb
)
377 if (mutex_trylock(&sb
->s_lock
) != 0)
382 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
)
386 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
390 if (ocfs2_is_hard_readonly(osb
))
394 status
= ocfs2_flush_truncate_log(osb
);
398 ocfs2_schedule_truncate_log_flush(osb
, 0);
401 if (jbd2_journal_start_commit(OCFS2_SB(sb
)->journal
->j_journal
,
404 jbd2_log_wait_commit(OCFS2_SB(sb
)->journal
->j_journal
,
410 static int ocfs2_need_system_inode(struct ocfs2_super
*osb
, int ino
)
412 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)
413 && (ino
== USER_QUOTA_SYSTEM_INODE
414 || ino
== LOCAL_USER_QUOTA_SYSTEM_INODE
))
416 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)
417 && (ino
== GROUP_QUOTA_SYSTEM_INODE
418 || ino
== LOCAL_GROUP_QUOTA_SYSTEM_INODE
))
423 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
)
425 struct inode
*new = NULL
;
431 new = ocfs2_iget(osb
, osb
->root_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
433 status
= PTR_ERR(new);
437 osb
->root_inode
= new;
439 new = ocfs2_iget(osb
, osb
->system_dir_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
441 status
= PTR_ERR(new);
445 osb
->sys_root_inode
= new;
447 for (i
= OCFS2_FIRST_ONLINE_SYSTEM_INODE
;
448 i
<= OCFS2_LAST_GLOBAL_SYSTEM_INODE
; i
++) {
449 if (!ocfs2_need_system_inode(osb
, i
))
451 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
453 ocfs2_release_system_inodes(osb
);
456 /* FIXME: Should ERROR_RO_FS */
457 mlog(ML_ERROR
, "Unable to load system inode %d, "
458 "possibly corrupt fs?", i
);
461 // the array now has one ref, so drop this one
470 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
)
472 struct inode
*new = NULL
;
478 for (i
= OCFS2_LAST_GLOBAL_SYSTEM_INODE
+ 1;
479 i
< NUM_SYSTEM_INODES
;
481 if (!ocfs2_need_system_inode(osb
, i
))
483 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
485 ocfs2_release_system_inodes(osb
);
487 mlog(ML_ERROR
, "status=%d, sysfile=%d, slot=%d\n",
488 status
, i
, osb
->slot_num
);
491 /* the array now has one ref, so drop this one */
500 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
)
507 for (i
= 0; i
< NUM_SYSTEM_INODES
; i
++) {
508 inode
= osb
->system_inodes
[i
];
511 osb
->system_inodes
[i
] = NULL
;
515 inode
= osb
->sys_root_inode
;
518 osb
->sys_root_inode
= NULL
;
521 inode
= osb
->root_inode
;
524 osb
->root_inode
= NULL
;
530 /* We're allocating fs objects, use GFP_NOFS */
531 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
)
533 struct ocfs2_inode_info
*oi
;
535 oi
= kmem_cache_alloc(ocfs2_inode_cachep
, GFP_NOFS
);
539 jbd2_journal_init_jbd_inode(&oi
->ip_jinode
, &oi
->vfs_inode
);
540 return &oi
->vfs_inode
;
543 static void ocfs2_destroy_inode(struct inode
*inode
)
545 kmem_cache_free(ocfs2_inode_cachep
, OCFS2_I(inode
));
548 static unsigned long long ocfs2_max_file_offset(unsigned int bbits
,
551 unsigned int bytes
= 1 << cbits
;
552 unsigned int trim
= bytes
;
553 unsigned int bitshift
= 32;
556 * i_size and all block offsets in ocfs2 are always 64 bits
557 * wide. i_clusters is 32 bits, in cluster-sized units. So on
558 * 64 bit platforms, cluster size will be the limiting factor.
561 #if BITS_PER_LONG == 32
562 # if defined(CONFIG_LBD)
563 BUILD_BUG_ON(sizeof(sector_t
) != 8);
565 * We might be limited by page cache size.
567 if (bytes
> PAGE_CACHE_SIZE
) {
568 bytes
= PAGE_CACHE_SIZE
;
571 * Shift by 31 here so that we don't get larger than
578 * We are limited by the size of sector_t. Use block size, as
579 * that's what we expose to the VFS.
588 * Trim by a whole cluster when we can actually approach the
589 * on-disk limits. Otherwise we can overflow i_clusters when
590 * an extent start is at the max offset.
592 return (((unsigned long long)bytes
) << bitshift
) - trim
;
595 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
)
597 int incompat_features
;
599 struct mount_options parsed_options
;
600 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
602 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 1)) {
607 if ((osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) !=
608 (parsed_options
.mount_opt
& OCFS2_MOUNT_HB_LOCAL
)) {
610 mlog(ML_ERROR
, "Cannot change heartbeat mode on remount\n");
614 if ((osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
) !=
615 (parsed_options
.mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
)) {
617 mlog(ML_ERROR
, "Cannot change data mode on remount\n");
621 /* Probably don't want this on remount; it might
622 * mess with other nodes */
623 if (!(osb
->s_mount_opt
& OCFS2_MOUNT_INODE64
) &&
624 (parsed_options
.mount_opt
& OCFS2_MOUNT_INODE64
)) {
626 mlog(ML_ERROR
, "Cannot enable inode64 on remount\n");
630 /* We're going to/from readonly mode. */
631 if ((*flags
& MS_RDONLY
) != (sb
->s_flags
& MS_RDONLY
)) {
632 /* Disable quota accounting before remounting RO */
633 if (*flags
& MS_RDONLY
) {
634 ret
= ocfs2_susp_quotas(osb
, 0);
638 /* Lock here so the check of HARD_RO and the potential
639 * setting of SOFT_RO is atomic. */
640 spin_lock(&osb
->osb_lock
);
641 if (osb
->osb_flags
& OCFS2_OSB_HARD_RO
) {
642 mlog(ML_ERROR
, "Remount on readonly device is forbidden.\n");
647 if (*flags
& MS_RDONLY
) {
648 mlog(0, "Going to ro mode.\n");
649 sb
->s_flags
|= MS_RDONLY
;
650 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
652 mlog(0, "Making ro filesystem writeable.\n");
654 if (osb
->osb_flags
& OCFS2_OSB_ERROR_FS
) {
655 mlog(ML_ERROR
, "Cannot remount RDWR "
656 "filesystem due to previous errors.\n");
660 incompat_features
= OCFS2_HAS_RO_COMPAT_FEATURE(sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
);
661 if (incompat_features
) {
662 mlog(ML_ERROR
, "Cannot remount RDWR because "
663 "of unsupported optional features "
664 "(%x).\n", incompat_features
);
668 sb
->s_flags
&= ~MS_RDONLY
;
669 osb
->osb_flags
&= ~OCFS2_OSB_SOFT_RO
;
672 spin_unlock(&osb
->osb_lock
);
673 /* Enable quota accounting after remounting RW */
674 if (!ret
&& !(*flags
& MS_RDONLY
)) {
675 if (sb_any_quota_suspended(sb
))
676 ret
= ocfs2_susp_quotas(osb
, 1);
678 ret
= ocfs2_enable_quotas(osb
);
680 /* Return back changes... */
681 spin_lock(&osb
->osb_lock
);
682 sb
->s_flags
|= MS_RDONLY
;
683 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
684 spin_unlock(&osb
->osb_lock
);
691 /* Only save off the new mount options in case of a successful
693 if (!(osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_XATTR
))
694 parsed_options
.mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
695 osb
->s_mount_opt
= parsed_options
.mount_opt
;
696 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
697 osb
->preferred_slot
= parsed_options
.slot
;
698 if (parsed_options
.commit_interval
)
699 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
701 if (!ocfs2_is_hard_readonly(osb
))
702 ocfs2_set_journal_params(osb
);
708 static int ocfs2_sb_probe(struct super_block
*sb
,
709 struct buffer_head
**bh
,
713 struct ocfs1_vol_disk_hdr
*hdr
;
714 struct ocfs2_dinode
*di
;
720 *sector_size
= bdev_hardsect_size(sb
->s_bdev
);
721 if (*sector_size
> OCFS2_MAX_BLOCKSIZE
) {
722 mlog(ML_ERROR
, "Hardware sector size too large: %d (max=%d)\n",
723 *sector_size
, OCFS2_MAX_BLOCKSIZE
);
728 /* Can this really happen? */
729 if (*sector_size
< OCFS2_MIN_BLOCKSIZE
)
730 *sector_size
= OCFS2_MIN_BLOCKSIZE
;
732 /* check block zero for old format */
733 status
= ocfs2_get_sector(sb
, bh
, 0, *sector_size
);
738 hdr
= (struct ocfs1_vol_disk_hdr
*) (*bh
)->b_data
;
739 if (hdr
->major_version
== OCFS1_MAJOR_VERSION
) {
740 mlog(ML_ERROR
, "incompatible version: %u.%u\n",
741 hdr
->major_version
, hdr
->minor_version
);
744 if (memcmp(hdr
->signature
, OCFS1_VOLUME_SIGNATURE
,
745 strlen(OCFS1_VOLUME_SIGNATURE
)) == 0) {
746 mlog(ML_ERROR
, "incompatible volume signature: %8s\n",
753 mlog(ML_ERROR
, "This is an ocfs v1 filesystem which must be "
754 "upgraded before mounting with ocfs v2\n");
759 * Now check at magic offset for 512, 1024, 2048, 4096
760 * blocksizes. 4096 is the maximum blocksize because it is
761 * the minimum clustersize.
764 for (blksize
= *sector_size
;
765 blksize
<= OCFS2_MAX_BLOCKSIZE
;
767 tmpstat
= ocfs2_get_sector(sb
, bh
,
768 OCFS2_SUPER_BLOCK_BLKNO
,
775 di
= (struct ocfs2_dinode
*) (*bh
)->b_data
;
776 status
= ocfs2_verify_volume(di
, *bh
, blksize
);
781 if (status
!= -EAGAIN
)
789 static int ocfs2_verify_heartbeat(struct ocfs2_super
*osb
)
791 if (ocfs2_mount_local(osb
)) {
792 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
793 mlog(ML_ERROR
, "Cannot heartbeat on a locally "
794 "mounted device.\n");
799 if (ocfs2_userspace_stack(osb
)) {
800 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
801 mlog(ML_ERROR
, "Userspace stack expected, but "
802 "o2cb heartbeat arguments passed to mount\n");
807 if (!(osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
)) {
808 if (!ocfs2_mount_local(osb
) && !ocfs2_is_hard_readonly(osb
) &&
809 !ocfs2_userspace_stack(osb
)) {
810 mlog(ML_ERROR
, "Heartbeat has to be started to mount "
811 "a read-write clustered device.\n");
820 * If we're using a userspace stack, mount should have passed
821 * a name that matches the disk. If not, mount should not
822 * have passed a stack.
824 static int ocfs2_verify_userspace_stack(struct ocfs2_super
*osb
,
825 struct mount_options
*mopt
)
827 if (!ocfs2_userspace_stack(osb
) && mopt
->cluster_stack
[0]) {
829 "cluster stack passed to mount, but this filesystem "
830 "does not support it\n");
834 if (ocfs2_userspace_stack(osb
) &&
835 strncmp(osb
->osb_cluster_stack
, mopt
->cluster_stack
,
836 OCFS2_STACK_LABEL_LEN
)) {
838 "cluster stack passed to mount (\"%s\") does not "
839 "match the filesystem (\"%s\")\n",
841 osb
->osb_cluster_stack
);
848 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
)
851 struct super_block
*sb
= osb
->sb
;
852 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
853 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
856 for (type
= 0; type
< MAXQUOTAS
; type
++) {
857 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
860 status
= vfs_quota_enable(
861 sb_dqopt(sb
)->files
[type
],
865 status
= vfs_quota_disable(sb
, type
,
871 mlog(ML_ERROR
, "Failed to suspend/unsuspend quotas on "
872 "remount (error = %d).\n", status
);
876 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
)
878 struct inode
*inode
[MAXQUOTAS
] = { NULL
, NULL
};
879 struct super_block
*sb
= osb
->sb
;
880 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
881 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
882 unsigned int ino
[MAXQUOTAS
] = { LOCAL_USER_QUOTA_SYSTEM_INODE
,
883 LOCAL_GROUP_QUOTA_SYSTEM_INODE
};
887 sb_dqopt(sb
)->flags
|= DQUOT_QUOTA_SYS_FILE
| DQUOT_NEGATIVE_USAGE
;
888 for (type
= 0; type
< MAXQUOTAS
; type
++) {
889 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
891 inode
[type
] = ocfs2_get_system_file_inode(osb
, ino
[type
],
897 status
= vfs_quota_enable(inode
[type
], type
, QFMT_OCFS2
,
898 DQUOT_USAGE_ENABLED
);
903 for (type
= 0; type
< MAXQUOTAS
; type
++)
907 ocfs2_disable_quotas(osb
);
908 for (type
= 0; type
< MAXQUOTAS
; type
++)
914 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
)
918 struct super_block
*sb
= osb
->sb
;
920 /* We mostly ignore errors in this function because there's not much
921 * we can do when we see them */
922 for (type
= 0; type
< MAXQUOTAS
; type
++) {
923 if (!sb_has_quota_loaded(sb
, type
))
925 inode
= igrab(sb
->s_dquot
.files
[type
]);
926 /* Turn off quotas. This will remove all dquot structures from
927 * memory and so they will be automatically synced to global
929 vfs_quota_disable(sb
, type
, DQUOT_USAGE_ENABLED
|
930 DQUOT_LIMITS_ENABLED
);
937 /* Handle quota on quotactl */
938 static int ocfs2_quota_on(struct super_block
*sb
, int type
, int format_id
,
939 char *path
, int remount
)
941 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
942 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
944 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
948 return 0; /* Just ignore it has been handled in
950 return vfs_quota_enable(sb_dqopt(sb
)->files
[type
], type
,
951 format_id
, DQUOT_LIMITS_ENABLED
);
954 /* Handle quota off quotactl */
955 static int ocfs2_quota_off(struct super_block
*sb
, int type
, int remount
)
958 return 0; /* Ignore now and handle later in
960 return vfs_quota_disable(sb
, type
, DQUOT_LIMITS_ENABLED
);
963 static struct quotactl_ops ocfs2_quotactl_ops
= {
964 .quota_on
= ocfs2_quota_on
,
965 .quota_off
= ocfs2_quota_off
,
966 .quota_sync
= vfs_quota_sync
,
967 .get_info
= vfs_get_dqinfo
,
968 .set_info
= vfs_set_dqinfo
,
969 .get_dqblk
= vfs_get_dqblk
,
970 .set_dqblk
= vfs_set_dqblk
,
973 static int ocfs2_fill_super(struct super_block
*sb
, void *data
, int silent
)
976 int status
, sector_size
;
977 struct mount_options parsed_options
;
978 struct inode
*inode
= NULL
;
979 struct ocfs2_super
*osb
= NULL
;
980 struct buffer_head
*bh
= NULL
;
983 mlog_entry("%p, %p, %i", sb
, data
, silent
);
985 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 0)) {
987 goto read_super_error
;
990 /* probe for superblock */
991 status
= ocfs2_sb_probe(sb
, &bh
, §or_size
);
993 mlog(ML_ERROR
, "superblock probe failed!\n");
994 goto read_super_error
;
997 status
= ocfs2_initialize_super(sb
, bh
, sector_size
);
1001 goto read_super_error
;
1006 if (!(osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_XATTR
))
1007 parsed_options
.mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
1009 osb
->s_mount_opt
= parsed_options
.mount_opt
;
1010 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
1011 osb
->preferred_slot
= parsed_options
.slot
;
1012 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
1013 osb
->local_alloc_default_bits
= ocfs2_megabytes_to_clusters(sb
, parsed_options
.localalloc_opt
);
1014 osb
->local_alloc_bits
= osb
->local_alloc_default_bits
;
1015 if (osb
->s_mount_opt
& OCFS2_MOUNT_USRQUOTA
&&
1016 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1017 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)) {
1019 mlog(ML_ERROR
, "User quotas were requested, but this "
1020 "filesystem does not have the feature enabled.\n");
1021 goto read_super_error
;
1023 if (osb
->s_mount_opt
& OCFS2_MOUNT_GRPQUOTA
&&
1024 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1025 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)) {
1027 mlog(ML_ERROR
, "Group quotas were requested, but this "
1028 "filesystem does not have the feature enabled.\n");
1029 goto read_super_error
;
1032 status
= ocfs2_verify_userspace_stack(osb
, &parsed_options
);
1034 goto read_super_error
;
1036 sb
->s_magic
= OCFS2_SUPER_MAGIC
;
1038 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
1039 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ? MS_POSIXACL
: 0);
1041 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1043 if (bdev_read_only(sb
->s_bdev
)) {
1044 if (!(sb
->s_flags
& MS_RDONLY
)) {
1046 mlog(ML_ERROR
, "Readonly device detected but readonly "
1047 "mount was not specified.\n");
1048 goto read_super_error
;
1051 /* You should not be able to start a local heartbeat
1052 * on a readonly device. */
1053 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
1055 mlog(ML_ERROR
, "Local heartbeat specified on readonly "
1057 goto read_super_error
;
1060 status
= ocfs2_check_journals_nolocks(osb
);
1062 if (status
== -EROFS
)
1063 mlog(ML_ERROR
, "Recovery required on readonly "
1064 "file system, but write access is "
1068 goto read_super_error
;
1071 ocfs2_set_ro_flag(osb
, 1);
1073 printk(KERN_NOTICE
"Readonly device detected. No cluster "
1074 "services will be utilized for this mount. Recovery "
1075 "will be skipped.\n");
1078 if (!ocfs2_is_hard_readonly(osb
)) {
1079 if (sb
->s_flags
& MS_RDONLY
)
1080 ocfs2_set_ro_flag(osb
, 0);
1083 status
= ocfs2_verify_heartbeat(osb
);
1086 goto read_super_error
;
1089 osb
->osb_debug_root
= debugfs_create_dir(osb
->uuid_str
,
1090 ocfs2_debugfs_root
);
1091 if (!osb
->osb_debug_root
) {
1093 mlog(ML_ERROR
, "Unable to create per-mount debugfs root.\n");
1094 goto read_super_error
;
1097 osb
->osb_ctxt
= debugfs_create_file("fs_state", S_IFREG
|S_IRUSR
,
1098 osb
->osb_debug_root
,
1100 &ocfs2_osb_debug_fops
);
1101 if (!osb
->osb_ctxt
) {
1104 goto read_super_error
;
1107 status
= ocfs2_mount_volume(sb
);
1108 if (osb
->root_inode
)
1109 inode
= igrab(osb
->root_inode
);
1112 goto read_super_error
;
1117 goto read_super_error
;
1120 root
= d_alloc_root(inode
);
1124 goto read_super_error
;
1129 ocfs2_complete_mount_recovery(osb
);
1131 if (ocfs2_mount_local(osb
))
1132 snprintf(nodestr
, sizeof(nodestr
), "local");
1134 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1136 printk(KERN_INFO
"ocfs2: Mounting device (%s) on (node %s, slot %d) "
1137 "with %s data mode.\n",
1138 osb
->dev_str
, nodestr
, osb
->slot_num
,
1139 osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
? "writeback" :
1142 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED
);
1143 wake_up(&osb
->osb_mount_event
);
1145 /* Now we can initialize quotas because we can afford to wait
1146 * for cluster locks recovery now. That also means that truncation
1147 * log recovery can happen but that waits for proper quota setup */
1148 if (!(sb
->s_flags
& MS_RDONLY
)) {
1149 status
= ocfs2_enable_quotas(osb
);
1151 /* We have to err-out specially here because
1152 * s_root is already set */
1154 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1155 wake_up(&osb
->osb_mount_event
);
1161 ocfs2_complete_quota_recovery(osb
);
1163 /* Now we wake up again for processes waiting for quotas */
1164 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED_QUOTAS
);
1165 wake_up(&osb
->osb_mount_event
);
1177 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1178 wake_up(&osb
->osb_mount_event
);
1179 ocfs2_dismount_volume(sb
, 1);
1186 static int ocfs2_get_sb(struct file_system_type
*fs_type
,
1188 const char *dev_name
,
1190 struct vfsmount
*mnt
)
1192 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, ocfs2_fill_super
,
1196 static struct file_system_type ocfs2_fs_type
= {
1197 .owner
= THIS_MODULE
,
1199 .get_sb
= ocfs2_get_sb
, /* is this called when we mount
1201 .kill_sb
= kill_block_super
, /* set to the generic one
1202 * right now, but do we
1203 * need to change that? */
1204 .fs_flags
= FS_REQUIRES_DEV
|FS_RENAME_DOES_D_MOVE
,
1208 static int ocfs2_parse_options(struct super_block
*sb
,
1210 struct mount_options
*mopt
,
1216 mlog_entry("remount: %d, options: \"%s\"\n", is_remount
,
1217 options
? options
: "(none)");
1219 mopt
->commit_interval
= 0;
1220 mopt
->mount_opt
= 0;
1221 mopt
->atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
1222 mopt
->slot
= OCFS2_INVALID_SLOT
;
1223 mopt
->localalloc_opt
= OCFS2_DEFAULT_LOCAL_ALLOC_SIZE
;
1224 mopt
->cluster_stack
[0] = '\0';
1231 while ((p
= strsep(&options
, ",")) != NULL
) {
1233 substring_t args
[MAX_OPT_ARGS
];
1238 token
= match_token(p
, tokens
, args
);
1241 mopt
->mount_opt
|= OCFS2_MOUNT_HB_LOCAL
;
1244 mopt
->mount_opt
&= ~OCFS2_MOUNT_HB_LOCAL
;
1247 if (match_int(&args
[0], &option
)) {
1252 mopt
->mount_opt
|= OCFS2_MOUNT_BARRIER
;
1254 mopt
->mount_opt
&= ~OCFS2_MOUNT_BARRIER
;
1257 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOINTR
;
1260 mopt
->mount_opt
|= OCFS2_MOUNT_NOINTR
;
1263 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
1266 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1268 case Opt_data_ordered
:
1269 mopt
->mount_opt
&= ~OCFS2_MOUNT_DATA_WRITEBACK
;
1271 case Opt_data_writeback
:
1272 mopt
->mount_opt
|= OCFS2_MOUNT_DATA_WRITEBACK
;
1274 case Opt_user_xattr
:
1275 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOUSERXATTR
;
1277 case Opt_nouser_xattr
:
1278 mopt
->mount_opt
|= OCFS2_MOUNT_NOUSERXATTR
;
1280 case Opt_atime_quantum
:
1281 if (match_int(&args
[0], &option
)) {
1286 mopt
->atime_quantum
= option
;
1290 if (match_int(&args
[0], &option
)) {
1295 mopt
->slot
= (s16
)option
;
1299 if (match_int(&args
[0], &option
)) {
1306 option
= JBD2_DEFAULT_MAX_COMMIT_AGE
;
1307 mopt
->commit_interval
= HZ
* option
;
1309 case Opt_localalloc
:
1311 if (match_int(&args
[0], &option
)) {
1315 if (option
>= 0 && (option
<= ocfs2_local_alloc_size(sb
) * 8))
1316 mopt
->localalloc_opt
= option
;
1318 case Opt_localflocks
:
1320 * Changing this during remount could race
1321 * flock() requests, or "unbalance" existing
1322 * ones (e.g., a lock is taken in one mode but
1323 * dropped in the other). If users care enough
1324 * to flip locking modes during remount, we
1325 * could add a "local" flag to individual
1326 * flock structures for proper tracking of
1330 mopt
->mount_opt
|= OCFS2_MOUNT_LOCALFLOCKS
;
1333 /* Check both that the option we were passed
1334 * is of the right length and that it is a proper
1335 * string of the right length.
1337 if (((args
[0].to
- args
[0].from
) !=
1338 OCFS2_STACK_LABEL_LEN
) ||
1339 (strnlen(args
[0].from
,
1340 OCFS2_STACK_LABEL_LEN
) !=
1341 OCFS2_STACK_LABEL_LEN
)) {
1343 "Invalid cluster_stack option\n");
1347 memcpy(mopt
->cluster_stack
, args
[0].from
,
1348 OCFS2_STACK_LABEL_LEN
);
1349 mopt
->cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
1352 mopt
->mount_opt
|= OCFS2_MOUNT_INODE64
;
1355 /* We check only on remount, otherwise features
1356 * aren't yet initialized. */
1357 if (is_remount
&& !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1358 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)) {
1359 mlog(ML_ERROR
, "User quota requested but "
1360 "filesystem feature is not set\n");
1364 mopt
->mount_opt
|= OCFS2_MOUNT_USRQUOTA
;
1367 if (is_remount
&& !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1368 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)) {
1369 mlog(ML_ERROR
, "Group quota requested but "
1370 "filesystem feature is not set\n");
1374 mopt
->mount_opt
|= OCFS2_MOUNT_GRPQUOTA
;
1376 #ifdef CONFIG_OCFS2_FS_POSIX_ACL
1378 mopt
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1381 mopt
->mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
1386 printk(KERN_INFO
"ocfs2 (no)acl options not supported\n");
1391 "Unrecognized mount option \"%s\" "
1392 "or missing value\n", p
);
1405 static int ocfs2_show_options(struct seq_file
*s
, struct vfsmount
*mnt
)
1407 struct ocfs2_super
*osb
= OCFS2_SB(mnt
->mnt_sb
);
1408 unsigned long opts
= osb
->s_mount_opt
;
1409 unsigned int local_alloc_megs
;
1411 if (opts
& OCFS2_MOUNT_HB_LOCAL
)
1412 seq_printf(s
, ",_netdev,heartbeat=local");
1414 seq_printf(s
, ",heartbeat=none");
1416 if (opts
& OCFS2_MOUNT_NOINTR
)
1417 seq_printf(s
, ",nointr");
1419 if (opts
& OCFS2_MOUNT_DATA_WRITEBACK
)
1420 seq_printf(s
, ",data=writeback");
1422 seq_printf(s
, ",data=ordered");
1424 if (opts
& OCFS2_MOUNT_BARRIER
)
1425 seq_printf(s
, ",barrier=1");
1427 if (opts
& OCFS2_MOUNT_ERRORS_PANIC
)
1428 seq_printf(s
, ",errors=panic");
1430 seq_printf(s
, ",errors=remount-ro");
1432 if (osb
->preferred_slot
!= OCFS2_INVALID_SLOT
)
1433 seq_printf(s
, ",preferred_slot=%d", osb
->preferred_slot
);
1435 if (osb
->s_atime_quantum
!= OCFS2_DEFAULT_ATIME_QUANTUM
)
1436 seq_printf(s
, ",atime_quantum=%u", osb
->s_atime_quantum
);
1438 if (osb
->osb_commit_interval
)
1439 seq_printf(s
, ",commit=%u",
1440 (unsigned) (osb
->osb_commit_interval
/ HZ
));
1442 local_alloc_megs
= osb
->local_alloc_bits
>> (20 - osb
->s_clustersize_bits
);
1443 if (local_alloc_megs
!= OCFS2_DEFAULT_LOCAL_ALLOC_SIZE
)
1444 seq_printf(s
, ",localalloc=%d", local_alloc_megs
);
1446 if (opts
& OCFS2_MOUNT_LOCALFLOCKS
)
1447 seq_printf(s
, ",localflocks,");
1449 if (osb
->osb_cluster_stack
[0])
1450 seq_printf(s
, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN
,
1451 osb
->osb_cluster_stack
);
1452 if (opts
& OCFS2_MOUNT_USRQUOTA
)
1453 seq_printf(s
, ",usrquota");
1454 if (opts
& OCFS2_MOUNT_GRPQUOTA
)
1455 seq_printf(s
, ",grpquota");
1457 if (opts
& OCFS2_MOUNT_NOUSERXATTR
)
1458 seq_printf(s
, ",nouser_xattr");
1460 seq_printf(s
, ",user_xattr");
1462 if (opts
& OCFS2_MOUNT_INODE64
)
1463 seq_printf(s
, ",inode64");
1465 #ifdef CONFIG_OCFS2_FS_POSIX_ACL
1466 if (opts
& OCFS2_MOUNT_POSIX_ACL
)
1467 seq_printf(s
, ",acl");
1469 seq_printf(s
, ",noacl");
1475 static int __init
ocfs2_init(void)
1481 ocfs2_print_version();
1483 status
= init_ocfs2_uptodate_cache();
1489 status
= ocfs2_initialize_mem_caches();
1495 ocfs2_wq
= create_singlethread_workqueue("ocfs2_wq");
1501 ocfs2_debugfs_root
= debugfs_create_dir("ocfs2", NULL
);
1502 if (!ocfs2_debugfs_root
) {
1504 mlog(ML_ERROR
, "Unable to create ocfs2 debugfs root.\n");
1507 status
= ocfs2_quota_setup();
1511 ocfs2_set_locking_protocol();
1513 status
= register_quota_format(&ocfs2_quota_format
);
1516 ocfs2_quota_shutdown();
1517 ocfs2_free_mem_caches();
1518 exit_ocfs2_uptodate_cache();
1524 return register_filesystem(&ocfs2_fs_type
);
1529 static void __exit
ocfs2_exit(void)
1533 ocfs2_quota_shutdown();
1536 flush_workqueue(ocfs2_wq
);
1537 destroy_workqueue(ocfs2_wq
);
1540 unregister_quota_format(&ocfs2_quota_format
);
1542 debugfs_remove(ocfs2_debugfs_root
);
1544 ocfs2_free_mem_caches();
1546 unregister_filesystem(&ocfs2_fs_type
);
1548 exit_ocfs2_uptodate_cache();
1553 static void ocfs2_put_super(struct super_block
*sb
)
1555 mlog_entry("(0x%p)\n", sb
);
1557 ocfs2_sync_blockdev(sb
);
1558 ocfs2_dismount_volume(sb
, 0);
1563 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1565 struct ocfs2_super
*osb
;
1566 u32 numbits
, freebits
;
1568 struct ocfs2_dinode
*bm_lock
;
1569 struct buffer_head
*bh
= NULL
;
1570 struct inode
*inode
= NULL
;
1572 mlog_entry("(%p, %p)\n", dentry
->d_sb
, buf
);
1574 osb
= OCFS2_SB(dentry
->d_sb
);
1576 inode
= ocfs2_get_system_file_inode(osb
,
1577 GLOBAL_BITMAP_SYSTEM_INODE
,
1578 OCFS2_INVALID_SLOT
);
1580 mlog(ML_ERROR
, "failed to get bitmap inode\n");
1585 status
= ocfs2_inode_lock(inode
, &bh
, 0);
1591 bm_lock
= (struct ocfs2_dinode
*) bh
->b_data
;
1593 numbits
= le32_to_cpu(bm_lock
->id1
.bitmap1
.i_total
);
1594 freebits
= numbits
- le32_to_cpu(bm_lock
->id1
.bitmap1
.i_used
);
1596 buf
->f_type
= OCFS2_SUPER_MAGIC
;
1597 buf
->f_bsize
= dentry
->d_sb
->s_blocksize
;
1598 buf
->f_namelen
= OCFS2_MAX_FILENAME_LEN
;
1599 buf
->f_blocks
= ((sector_t
) numbits
) *
1600 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1601 buf
->f_bfree
= ((sector_t
) freebits
) *
1602 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1603 buf
->f_bavail
= buf
->f_bfree
;
1604 buf
->f_files
= numbits
;
1605 buf
->f_ffree
= freebits
;
1609 ocfs2_inode_unlock(inode
, 0);
1620 static void ocfs2_inode_init_once(void *data
)
1622 struct ocfs2_inode_info
*oi
= data
;
1625 oi
->ip_open_count
= 0;
1626 spin_lock_init(&oi
->ip_lock
);
1627 ocfs2_extent_map_init(&oi
->vfs_inode
);
1628 INIT_LIST_HEAD(&oi
->ip_io_markers
);
1629 oi
->ip_created_trans
= 0;
1630 oi
->ip_last_trans
= 0;
1631 oi
->ip_dir_start_lookup
= 0;
1633 init_rwsem(&oi
->ip_alloc_sem
);
1634 init_rwsem(&oi
->ip_xattr_sem
);
1635 mutex_init(&oi
->ip_io_mutex
);
1637 oi
->ip_blkno
= 0ULL;
1638 oi
->ip_clusters
= 0;
1640 ocfs2_lock_res_init_once(&oi
->ip_rw_lockres
);
1641 ocfs2_lock_res_init_once(&oi
->ip_inode_lockres
);
1642 ocfs2_lock_res_init_once(&oi
->ip_open_lockres
);
1644 ocfs2_metadata_cache_init(&oi
->vfs_inode
);
1646 inode_init_once(&oi
->vfs_inode
);
1649 static int ocfs2_initialize_mem_caches(void)
1651 ocfs2_inode_cachep
= kmem_cache_create("ocfs2_inode_cache",
1652 sizeof(struct ocfs2_inode_info
),
1654 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1656 ocfs2_inode_init_once
);
1657 ocfs2_dquot_cachep
= kmem_cache_create("ocfs2_dquot_cache",
1658 sizeof(struct ocfs2_dquot
),
1660 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1663 ocfs2_qf_chunk_cachep
= kmem_cache_create("ocfs2_qf_chunk_cache",
1664 sizeof(struct ocfs2_quota_chunk
),
1666 (SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
),
1668 if (!ocfs2_inode_cachep
|| !ocfs2_dquot_cachep
||
1669 !ocfs2_qf_chunk_cachep
) {
1670 if (ocfs2_inode_cachep
)
1671 kmem_cache_destroy(ocfs2_inode_cachep
);
1672 if (ocfs2_dquot_cachep
)
1673 kmem_cache_destroy(ocfs2_dquot_cachep
);
1674 if (ocfs2_qf_chunk_cachep
)
1675 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1682 static void ocfs2_free_mem_caches(void)
1684 if (ocfs2_inode_cachep
)
1685 kmem_cache_destroy(ocfs2_inode_cachep
);
1686 ocfs2_inode_cachep
= NULL
;
1688 if (ocfs2_dquot_cachep
)
1689 kmem_cache_destroy(ocfs2_dquot_cachep
);
1690 ocfs2_dquot_cachep
= NULL
;
1692 if (ocfs2_qf_chunk_cachep
)
1693 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1694 ocfs2_qf_chunk_cachep
= NULL
;
1697 static int ocfs2_get_sector(struct super_block
*sb
,
1698 struct buffer_head
**bh
,
1702 if (!sb_set_blocksize(sb
, sect_size
)) {
1703 mlog(ML_ERROR
, "unable to set blocksize\n");
1707 *bh
= sb_getblk(sb
, block
);
1713 if (!buffer_dirty(*bh
))
1714 clear_buffer_uptodate(*bh
);
1716 ll_rw_block(READ
, 1, bh
);
1717 wait_on_buffer(*bh
);
1718 if (!buffer_uptodate(*bh
)) {
1728 static int ocfs2_mount_volume(struct super_block
*sb
)
1731 int unlock_super
= 0;
1732 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1736 if (ocfs2_is_hard_readonly(osb
))
1739 status
= ocfs2_dlm_init(osb
);
1745 status
= ocfs2_super_lock(osb
, 1);
1752 /* This will load up the node map and add ourselves to it. */
1753 status
= ocfs2_find_slot(osb
);
1759 /* load all node-local system inodes */
1760 status
= ocfs2_init_local_system_inodes(osb
);
1766 status
= ocfs2_check_volume(osb
);
1772 status
= ocfs2_truncate_log_init(osb
);
1778 if (ocfs2_mount_local(osb
))
1783 ocfs2_super_unlock(osb
, 1);
1789 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
)
1791 int tmp
, hangup_needed
= 0;
1792 struct ocfs2_super
*osb
= NULL
;
1795 mlog_entry("(0x%p)\n", sb
);
1801 debugfs_remove(osb
->osb_ctxt
);
1803 ocfs2_disable_quotas(osb
);
1805 ocfs2_shutdown_local_alloc(osb
);
1807 ocfs2_truncate_log_shutdown(osb
);
1809 /* This will disable recovery and flush any recovery work. */
1810 ocfs2_recovery_exit(osb
);
1812 ocfs2_journal_shutdown(osb
);
1814 ocfs2_sync_blockdev(sb
);
1816 /* No cluster connection means we've failed during mount, so skip
1817 * all the steps which depended on that to complete. */
1819 tmp
= ocfs2_super_lock(osb
, 1);
1826 if (osb
->slot_num
!= OCFS2_INVALID_SLOT
)
1827 ocfs2_put_slot(osb
);
1830 ocfs2_super_unlock(osb
, 1);
1832 ocfs2_release_system_inodes(osb
);
1835 * If we're dismounting due to mount error, mount.ocfs2 will clean
1836 * up heartbeat. If we're a local mount, there is no heartbeat.
1837 * If we failed before we got a uuid_str yet, we can't stop
1838 * heartbeat. Otherwise, do it.
1840 if (!mnt_err
&& !ocfs2_mount_local(osb
) && osb
->uuid_str
)
1844 ocfs2_dlm_shutdown(osb
, hangup_needed
);
1846 debugfs_remove(osb
->osb_debug_root
);
1849 ocfs2_cluster_hangup(osb
->uuid_str
, strlen(osb
->uuid_str
));
1851 atomic_set(&osb
->vol_state
, VOLUME_DISMOUNTED
);
1853 if (ocfs2_mount_local(osb
))
1854 snprintf(nodestr
, sizeof(nodestr
), "local");
1856 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1858 printk(KERN_INFO
"ocfs2: Unmounting device (%s) on (node %s)\n",
1859 osb
->dev_str
, nodestr
);
1861 ocfs2_delete_osb(osb
);
1864 sb
->s_fs_info
= NULL
;
1867 static int ocfs2_setup_osb_uuid(struct ocfs2_super
*osb
, const unsigned char *uuid
,
1868 unsigned uuid_bytes
)
1873 BUG_ON(uuid_bytes
!= OCFS2_VOL_UUID_LEN
);
1875 osb
->uuid_str
= kzalloc(OCFS2_VOL_UUID_LEN
* 2 + 1, GFP_KERNEL
);
1876 if (osb
->uuid_str
== NULL
)
1879 for (i
= 0, ptr
= osb
->uuid_str
; i
< OCFS2_VOL_UUID_LEN
; i
++) {
1880 /* print with null */
1881 ret
= snprintf(ptr
, 3, "%02X", uuid
[i
]);
1882 if (ret
!= 2) /* drop super cleans up */
1884 /* then only advance past the last char */
1891 static int ocfs2_initialize_super(struct super_block
*sb
,
1892 struct buffer_head
*bh
,
1896 int i
, cbits
, bbits
;
1897 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*)bh
->b_data
;
1898 struct inode
*inode
= NULL
;
1899 struct ocfs2_journal
*journal
;
1900 __le32 uuid_net_key
;
1901 struct ocfs2_super
*osb
;
1905 osb
= kzalloc(sizeof(struct ocfs2_super
), GFP_KERNEL
);
1912 sb
->s_fs_info
= osb
;
1913 sb
->s_op
= &ocfs2_sops
;
1914 sb
->s_export_op
= &ocfs2_export_ops
;
1915 sb
->s_qcop
= &ocfs2_quotactl_ops
;
1916 sb
->dq_op
= &ocfs2_quota_operations
;
1917 sb
->s_xattr
= ocfs2_xattr_handlers
;
1918 sb
->s_time_gran
= 1;
1919 sb
->s_flags
|= MS_NOATIME
;
1920 /* this is needed to support O_LARGEFILE */
1921 cbits
= le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
1922 bbits
= le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
);
1923 sb
->s_maxbytes
= ocfs2_max_file_offset(bbits
, cbits
);
1925 osb
->osb_dx_mask
= (1 << (cbits
- bbits
)) - 1;
1927 for (i
= 0; i
< 3; i
++)
1928 osb
->osb_dx_seed
[i
] = le32_to_cpu(di
->id2
.i_super
.s_dx_seed
[i
]);
1929 osb
->osb_dx_seed
[3] = le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
1932 /* Save off for ocfs2_rw_direct */
1933 osb
->s_sectsize_bits
= blksize_bits(sector_size
);
1934 BUG_ON(!osb
->s_sectsize_bits
);
1936 spin_lock_init(&osb
->dc_task_lock
);
1937 init_waitqueue_head(&osb
->dc_event
);
1938 osb
->dc_work_sequence
= 0;
1939 osb
->dc_wake_sequence
= 0;
1940 INIT_LIST_HEAD(&osb
->blocked_lock_list
);
1941 osb
->blocked_lock_count
= 0;
1942 spin_lock_init(&osb
->osb_lock
);
1943 spin_lock_init(&osb
->osb_xattr_lock
);
1944 ocfs2_init_inode_steal_slot(osb
);
1946 atomic_set(&osb
->alloc_stats
.moves
, 0);
1947 atomic_set(&osb
->alloc_stats
.local_data
, 0);
1948 atomic_set(&osb
->alloc_stats
.bitmap_data
, 0);
1949 atomic_set(&osb
->alloc_stats
.bg_allocs
, 0);
1950 atomic_set(&osb
->alloc_stats
.bg_extends
, 0);
1952 ocfs2_init_node_maps(osb
);
1954 snprintf(osb
->dev_str
, sizeof(osb
->dev_str
), "%u,%u",
1955 MAJOR(osb
->sb
->s_dev
), MINOR(osb
->sb
->s_dev
));
1957 status
= ocfs2_recovery_init(osb
);
1959 mlog(ML_ERROR
, "Unable to initialize recovery state\n");
1964 init_waitqueue_head(&osb
->checkpoint_event
);
1965 atomic_set(&osb
->needs_checkpoint
, 0);
1967 osb
->s_atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
1969 osb
->slot_num
= OCFS2_INVALID_SLOT
;
1971 osb
->s_xattr_inline_size
= le16_to_cpu(
1972 di
->id2
.i_super
.s_xattr_inline_size
);
1974 osb
->local_alloc_state
= OCFS2_LA_UNUSED
;
1975 osb
->local_alloc_bh
= NULL
;
1976 INIT_DELAYED_WORK(&osb
->la_enable_wq
, ocfs2_la_enable_worker
);
1978 init_waitqueue_head(&osb
->osb_mount_event
);
1980 osb
->vol_label
= kmalloc(OCFS2_MAX_VOL_LABEL_LEN
, GFP_KERNEL
);
1981 if (!osb
->vol_label
) {
1982 mlog(ML_ERROR
, "unable to alloc vol label\n");
1987 osb
->max_slots
= le16_to_cpu(di
->id2
.i_super
.s_max_slots
);
1988 if (osb
->max_slots
> OCFS2_MAX_SLOTS
|| osb
->max_slots
== 0) {
1989 mlog(ML_ERROR
, "Invalid number of node slots (%u)\n",
1994 mlog(0, "max_slots for this device: %u\n", osb
->max_slots
);
1996 osb
->slot_recovery_generations
=
1997 kcalloc(osb
->max_slots
, sizeof(*osb
->slot_recovery_generations
),
1999 if (!osb
->slot_recovery_generations
) {
2005 init_waitqueue_head(&osb
->osb_wipe_event
);
2006 osb
->osb_orphan_wipes
= kcalloc(osb
->max_slots
,
2007 sizeof(*osb
->osb_orphan_wipes
),
2009 if (!osb
->osb_orphan_wipes
) {
2015 osb
->s_feature_compat
=
2016 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_compat
);
2017 osb
->s_feature_ro_compat
=
2018 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_ro_compat
);
2019 osb
->s_feature_incompat
=
2020 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_incompat
);
2022 if ((i
= OCFS2_HAS_INCOMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_INCOMPAT_SUPP
))) {
2023 mlog(ML_ERROR
, "couldn't mount because of unsupported "
2024 "optional features (%x).\n", i
);
2028 if (!(osb
->sb
->s_flags
& MS_RDONLY
) &&
2029 (i
= OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
))) {
2030 mlog(ML_ERROR
, "couldn't mount RDWR because of "
2031 "unsupported optional features (%x).\n", i
);
2036 if (ocfs2_userspace_stack(osb
)) {
2037 memcpy(osb
->osb_cluster_stack
,
2038 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stack
,
2039 OCFS2_STACK_LABEL_LEN
);
2040 osb
->osb_cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
2041 if (strlen(osb
->osb_cluster_stack
) != OCFS2_STACK_LABEL_LEN
) {
2043 "couldn't mount because of an invalid "
2044 "cluster stack label (%s) \n",
2045 osb
->osb_cluster_stack
);
2050 /* The empty string is identical with classic tools that
2051 * don't know about s_cluster_info. */
2052 osb
->osb_cluster_stack
[0] = '\0';
2055 get_random_bytes(&osb
->s_next_generation
, sizeof(u32
));
2058 * This should be done in ocfs2_journal_init(), but unknown
2059 * ordering issues will cause the filesystem to crash.
2060 * If anyone wants to figure out what part of the code
2061 * refers to osb->journal before ocfs2_journal_init() is run,
2064 /* initialize our journal structure */
2066 journal
= kzalloc(sizeof(struct ocfs2_journal
), GFP_KERNEL
);
2068 mlog(ML_ERROR
, "unable to alloc journal\n");
2072 osb
->journal
= journal
;
2073 journal
->j_osb
= osb
;
2075 atomic_set(&journal
->j_num_trans
, 0);
2076 init_rwsem(&journal
->j_trans_barrier
);
2077 init_waitqueue_head(&journal
->j_checkpointed
);
2078 spin_lock_init(&journal
->j_lock
);
2079 journal
->j_trans_id
= (unsigned long) 1;
2080 INIT_LIST_HEAD(&journal
->j_la_cleanups
);
2081 INIT_WORK(&journal
->j_recovery_work
, ocfs2_complete_recovery
);
2082 journal
->j_state
= OCFS2_JOURNAL_FREE
;
2084 INIT_WORK(&osb
->dentry_lock_work
, ocfs2_drop_dl_inodes
);
2085 osb
->dentry_lock_list
= NULL
;
2087 /* get some pseudo constants for clustersize bits */
2088 osb
->s_clustersize_bits
=
2089 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2090 osb
->s_clustersize
= 1 << osb
->s_clustersize_bits
;
2091 mlog(0, "clusterbits=%d\n", osb
->s_clustersize_bits
);
2093 if (osb
->s_clustersize
< OCFS2_MIN_CLUSTERSIZE
||
2094 osb
->s_clustersize
> OCFS2_MAX_CLUSTERSIZE
) {
2095 mlog(ML_ERROR
, "Volume has invalid cluster size (%d)\n",
2096 osb
->s_clustersize
);
2101 if (ocfs2_clusters_to_blocks(osb
->sb
, le32_to_cpu(di
->i_clusters
) - 1)
2103 mlog(ML_ERROR
, "Volume might try to write to blocks beyond "
2104 "what jbd can address in 32 bits.\n");
2109 if (ocfs2_setup_osb_uuid(osb
, di
->id2
.i_super
.s_uuid
,
2110 sizeof(di
->id2
.i_super
.s_uuid
))) {
2111 mlog(ML_ERROR
, "Out of memory trying to setup our uuid.\n");
2116 memcpy(&uuid_net_key
, di
->id2
.i_super
.s_uuid
, sizeof(uuid_net_key
));
2118 strncpy(osb
->vol_label
, di
->id2
.i_super
.s_label
, 63);
2119 osb
->vol_label
[63] = '\0';
2120 osb
->root_blkno
= le64_to_cpu(di
->id2
.i_super
.s_root_blkno
);
2121 osb
->system_dir_blkno
= le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
);
2122 osb
->first_cluster_group_blkno
=
2123 le64_to_cpu(di
->id2
.i_super
.s_first_cluster_group
);
2124 osb
->fs_generation
= le32_to_cpu(di
->i_fs_generation
);
2125 osb
->uuid_hash
= le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2126 mlog(0, "vol_label: %s\n", osb
->vol_label
);
2127 mlog(0, "uuid: %s\n", osb
->uuid_str
);
2128 mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n",
2129 (unsigned long long)osb
->root_blkno
,
2130 (unsigned long long)osb
->system_dir_blkno
);
2132 osb
->osb_dlm_debug
= ocfs2_new_dlm_debug();
2133 if (!osb
->osb_dlm_debug
) {
2139 atomic_set(&osb
->vol_state
, VOLUME_INIT
);
2141 /* load root, system_dir, and all global system inodes */
2142 status
= ocfs2_init_global_system_inodes(osb
);
2151 inode
= ocfs2_get_system_file_inode(osb
, GLOBAL_BITMAP_SYSTEM_INODE
,
2152 OCFS2_INVALID_SLOT
);
2159 osb
->bitmap_blkno
= OCFS2_I(inode
)->ip_blkno
;
2162 osb
->bitmap_cpg
= ocfs2_group_bitmap_size(sb
) * 8;
2164 status
= ocfs2_init_slot_info(osb
);
2176 * will return: -EAGAIN if it is ok to keep searching for superblocks
2177 * -EINVAL if there is a bad superblock
2180 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
2181 struct buffer_head
*bh
,
2184 int status
= -EAGAIN
;
2188 if (memcmp(di
->i_signature
, OCFS2_SUPER_BLOCK_SIGNATURE
,
2189 strlen(OCFS2_SUPER_BLOCK_SIGNATURE
)) == 0) {
2190 /* We have to do a raw check of the feature here */
2191 if (le32_to_cpu(di
->id2
.i_super
.s_feature_incompat
) &
2192 OCFS2_FEATURE_INCOMPAT_META_ECC
) {
2193 status
= ocfs2_block_check_validate(bh
->b_data
,
2200 if ((1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
)) != blksz
) {
2201 mlog(ML_ERROR
, "found superblock with incorrect block "
2202 "size: found %u, should be %u\n",
2203 1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
),
2205 } else if (le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
) !=
2206 OCFS2_MAJOR_REV_LEVEL
||
2207 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
) !=
2208 OCFS2_MINOR_REV_LEVEL
) {
2209 mlog(ML_ERROR
, "found superblock with bad version: "
2210 "found %u.%u, should be %u.%u\n",
2211 le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
),
2212 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
),
2213 OCFS2_MAJOR_REV_LEVEL
,
2214 OCFS2_MINOR_REV_LEVEL
);
2215 } else if (bh
->b_blocknr
!= le64_to_cpu(di
->i_blkno
)) {
2216 mlog(ML_ERROR
, "bad block number on superblock: "
2217 "found %llu, should be %llu\n",
2218 (unsigned long long)le64_to_cpu(di
->i_blkno
),
2219 (unsigned long long)bh
->b_blocknr
);
2220 } else if (le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) < 12 ||
2221 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) > 20) {
2222 mlog(ML_ERROR
, "bad cluster size found: %u\n",
2223 1 << le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
));
2224 } else if (!le64_to_cpu(di
->id2
.i_super
.s_root_blkno
)) {
2225 mlog(ML_ERROR
, "bad root_blkno: 0\n");
2226 } else if (!le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
)) {
2227 mlog(ML_ERROR
, "bad system_dir_blkno: 0\n");
2228 } else if (le16_to_cpu(di
->id2
.i_super
.s_max_slots
) > OCFS2_MAX_SLOTS
) {
2230 "Superblock slots found greater than file system "
2231 "maximum: found %u, max %u\n",
2232 le16_to_cpu(di
->id2
.i_super
.s_max_slots
),
2245 static int ocfs2_check_volume(struct ocfs2_super
*osb
)
2250 struct ocfs2_dinode
*local_alloc
= NULL
; /* only used if we
2256 /* Init our journal object. */
2257 status
= ocfs2_journal_init(osb
->journal
, &dirty
);
2259 mlog(ML_ERROR
, "Could not initialize journal!\n");
2263 /* If the journal was unmounted cleanly then we don't want to
2264 * recover anything. Otherwise, journal_load will do that
2265 * dirty work for us :) */
2267 status
= ocfs2_journal_wipe(osb
->journal
, 0);
2273 mlog(ML_NOTICE
, "File system was not unmounted cleanly, "
2274 "recovering volume.\n");
2277 local
= ocfs2_mount_local(osb
);
2279 /* will play back anything left in the journal. */
2280 status
= ocfs2_journal_load(osb
->journal
, local
, dirty
);
2282 mlog(ML_ERROR
, "ocfs2 journal load failed! %d\n", status
);
2287 /* recover my local alloc if we didn't unmount cleanly. */
2288 status
= ocfs2_begin_local_alloc_recovery(osb
,
2295 /* we complete the recovery process after we've marked
2296 * ourselves as mounted. */
2299 mlog(0, "Journal loaded.\n");
2301 status
= ocfs2_load_local_alloc(osb
);
2308 /* Recovery will be completed after we've mounted the
2309 * rest of the volume. */
2311 osb
->local_alloc_copy
= local_alloc
;
2315 /* go through each journal, trylock it and if you get the
2316 * lock, and it's marked as dirty, set the bit in the recover
2317 * map and launch a recovery thread for it. */
2318 status
= ocfs2_mark_dead_nodes(osb
);
2324 status
= ocfs2_compute_replay_slots(osb
);
2337 * The routine gets called from dismount or close whenever a dismount on
2338 * volume is requested and the osb open count becomes 1.
2339 * It will remove the osb from the global list and also free up all the
2340 * initialized resources and fileobject.
2342 static void ocfs2_delete_osb(struct ocfs2_super
*osb
)
2346 /* This function assumes that the caller has the main osb resource */
2348 ocfs2_free_slot_info(osb
);
2350 kfree(osb
->osb_orphan_wipes
);
2351 kfree(osb
->slot_recovery_generations
);
2353 * This belongs in journal shutdown, but because we have to
2354 * allocate osb->journal at the start of ocfs2_initalize_osb(),
2357 kfree(osb
->journal
);
2358 if (osb
->local_alloc_copy
)
2359 kfree(osb
->local_alloc_copy
);
2360 kfree(osb
->uuid_str
);
2361 ocfs2_put_dlm_debug(osb
->osb_dlm_debug
);
2362 memset(osb
, 0, sizeof(struct ocfs2_super
));
2367 /* Put OCFS2 into a readonly state, or (if the user specifies it),
2368 * panic(). We do not support continue-on-error operation. */
2369 static void ocfs2_handle_error(struct super_block
*sb
)
2371 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
2373 if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_PANIC
)
2374 panic("OCFS2: (device %s): panic forced after error\n",
2377 ocfs2_set_osb_flag(osb
, OCFS2_OSB_ERROR_FS
);
2379 if (sb
->s_flags
& MS_RDONLY
&&
2380 (ocfs2_is_soft_readonly(osb
) ||
2381 ocfs2_is_hard_readonly(osb
)))
2384 printk(KERN_CRIT
"File system is now read-only due to the potential "
2385 "of on-disk corruption. Please run fsck.ocfs2 once the file "
2386 "system is unmounted.\n");
2387 sb
->s_flags
|= MS_RDONLY
;
2388 ocfs2_set_ro_flag(osb
, 0);
2391 static char error_buf
[1024];
2393 void __ocfs2_error(struct super_block
*sb
,
2394 const char *function
,
2395 const char *fmt
, ...)
2399 va_start(args
, fmt
);
2400 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2403 /* Not using mlog here because we want to show the actual
2404 * function the error came from. */
2405 printk(KERN_CRIT
"OCFS2: ERROR (device %s): %s: %s\n",
2406 sb
->s_id
, function
, error_buf
);
2408 ocfs2_handle_error(sb
);
2411 /* Handle critical errors. This is intentionally more drastic than
2412 * ocfs2_handle_error, so we only use for things like journal errors,
2414 void __ocfs2_abort(struct super_block
* sb
,
2415 const char *function
,
2416 const char *fmt
, ...)
2420 va_start(args
, fmt
);
2421 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2424 printk(KERN_CRIT
"OCFS2: abort (device %s): %s: %s\n",
2425 sb
->s_id
, function
, error_buf
);
2427 /* We don't have the cluster support yet to go straight to
2428 * hard readonly in here. Until then, we want to keep
2429 * ocfs2_abort() so that we can at least mark critical
2432 * TODO: This should abort the journal and alert other nodes
2433 * that our slot needs recovery. */
2435 /* Force a panic(). This stinks, but it's better than letting
2436 * things continue without having a proper hard readonly
2438 OCFS2_SB(sb
)->s_mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
2439 ocfs2_handle_error(sb
);
2442 module_init(ocfs2_init
);
2443 module_exit(ocfs2_exit
);