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/smp_lock.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"
71 #include "refcounttree.h"
74 #include "buffer_head_io.h"
76 static struct kmem_cache
*ocfs2_inode_cachep
= NULL
;
77 struct kmem_cache
*ocfs2_dquot_cachep
;
78 struct kmem_cache
*ocfs2_qf_chunk_cachep
;
80 /* OCFS2 needs to schedule several differnt types of work which
81 * require cluster locking, disk I/O, recovery waits, etc. Since these
82 * types of work tend to be heavy we avoid using the kernel events
83 * workqueue and schedule on our own. */
84 struct workqueue_struct
*ocfs2_wq
= NULL
;
86 static struct dentry
*ocfs2_debugfs_root
= NULL
;
88 MODULE_AUTHOR("Oracle");
89 MODULE_LICENSE("GPL");
93 unsigned long commit_interval
;
94 unsigned long mount_opt
;
95 unsigned int atime_quantum
;
98 unsigned int resv_level
;
100 char cluster_stack
[OCFS2_STACK_LABEL_LEN
+ 1];
103 static int ocfs2_parse_options(struct super_block
*sb
, char *options
,
104 struct mount_options
*mopt
,
106 static int ocfs2_check_set_options(struct super_block
*sb
,
107 struct mount_options
*options
);
108 static int ocfs2_show_options(struct seq_file
*s
, struct vfsmount
*mnt
);
109 static void ocfs2_put_super(struct super_block
*sb
);
110 static int ocfs2_mount_volume(struct super_block
*sb
);
111 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
);
112 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
);
113 static int ocfs2_initialize_mem_caches(void);
114 static void ocfs2_free_mem_caches(void);
115 static void ocfs2_delete_osb(struct ocfs2_super
*osb
);
117 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
);
119 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
);
121 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
);
122 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
);
123 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
);
124 static int ocfs2_check_volume(struct ocfs2_super
*osb
);
125 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
126 struct buffer_head
*bh
,
128 struct ocfs2_blockcheck_stats
*stats
);
129 static int ocfs2_initialize_super(struct super_block
*sb
,
130 struct buffer_head
*bh
,
132 struct ocfs2_blockcheck_stats
*stats
);
133 static int ocfs2_get_sector(struct super_block
*sb
,
134 struct buffer_head
**bh
,
137 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
);
138 static void ocfs2_destroy_inode(struct inode
*inode
);
139 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
);
140 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
);
141 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
);
143 static const struct super_operations ocfs2_sops
= {
144 .statfs
= ocfs2_statfs
,
145 .alloc_inode
= ocfs2_alloc_inode
,
146 .destroy_inode
= ocfs2_destroy_inode
,
147 .drop_inode
= ocfs2_drop_inode
,
148 .evict_inode
= ocfs2_evict_inode
,
149 .sync_fs
= ocfs2_sync_fs
,
150 .put_super
= ocfs2_put_super
,
151 .remount_fs
= ocfs2_remount
,
152 .show_options
= ocfs2_show_options
,
153 .quota_read
= ocfs2_quota_read
,
154 .quota_write
= ocfs2_quota_write
,
181 Opt_coherency_buffered
,
188 static const match_table_t tokens
= {
189 {Opt_barrier
, "barrier=%u"},
190 {Opt_err_panic
, "errors=panic"},
191 {Opt_err_ro
, "errors=remount-ro"},
193 {Opt_nointr
, "nointr"},
194 {Opt_hb_none
, OCFS2_HB_NONE
},
195 {Opt_hb_local
, OCFS2_HB_LOCAL
},
196 {Opt_hb_global
, OCFS2_HB_GLOBAL
},
197 {Opt_data_ordered
, "data=ordered"},
198 {Opt_data_writeback
, "data=writeback"},
199 {Opt_atime_quantum
, "atime_quantum=%u"},
200 {Opt_slot
, "preferred_slot=%u"},
201 {Opt_commit
, "commit=%u"},
202 {Opt_localalloc
, "localalloc=%d"},
203 {Opt_localflocks
, "localflocks"},
204 {Opt_stack
, "cluster_stack=%s"},
205 {Opt_user_xattr
, "user_xattr"},
206 {Opt_nouser_xattr
, "nouser_xattr"},
207 {Opt_inode64
, "inode64"},
209 {Opt_noacl
, "noacl"},
210 {Opt_usrquota
, "usrquota"},
211 {Opt_grpquota
, "grpquota"},
212 {Opt_coherency_buffered
, "coherency=buffered"},
213 {Opt_coherency_full
, "coherency=full"},
214 {Opt_resv_level
, "resv_level=%u"},
215 {Opt_dir_resv_level
, "dir_resv_level=%u"},
219 #ifdef CONFIG_DEBUG_FS
220 static int ocfs2_osb_dump(struct ocfs2_super
*osb
, char *buf
, int len
)
222 struct ocfs2_cluster_connection
*cconn
= osb
->cconn
;
223 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
224 struct ocfs2_orphan_scan
*os
= &osb
->osb_orphan_scan
;
227 out
+= snprintf(buf
+ out
, len
- out
,
228 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
229 "Device", osb
->dev_str
, osb
->uuid_str
,
230 osb
->fs_generation
, osb
->vol_label
);
232 out
+= snprintf(buf
+ out
, len
- out
,
233 "%10s => State: %d Flags: 0x%lX\n", "Volume",
234 atomic_read(&osb
->vol_state
), osb
->osb_flags
);
236 out
+= snprintf(buf
+ out
, len
- out
,
237 "%10s => Block: %lu Cluster: %d\n", "Sizes",
238 osb
->sb
->s_blocksize
, osb
->s_clustersize
);
240 out
+= snprintf(buf
+ out
, len
- out
,
241 "%10s => Compat: 0x%X Incompat: 0x%X "
243 "Features", osb
->s_feature_compat
,
244 osb
->s_feature_incompat
, osb
->s_feature_ro_compat
);
246 out
+= snprintf(buf
+ out
, len
- out
,
247 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
248 osb
->s_mount_opt
, osb
->s_atime_quantum
);
251 out
+= snprintf(buf
+ out
, len
- out
,
252 "%10s => Stack: %s Name: %*s "
253 "Version: %d.%d\n", "Cluster",
254 (*osb
->osb_cluster_stack
== '\0' ?
255 "o2cb" : osb
->osb_cluster_stack
),
256 cconn
->cc_namelen
, cconn
->cc_name
,
257 cconn
->cc_version
.pv_major
,
258 cconn
->cc_version
.pv_minor
);
261 spin_lock(&osb
->dc_task_lock
);
262 out
+= snprintf(buf
+ out
, len
- out
,
263 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
264 "WorkSeq: %lu\n", "DownCnvt",
265 (osb
->dc_task
? task_pid_nr(osb
->dc_task
) : -1),
266 osb
->blocked_lock_count
, osb
->dc_wake_sequence
,
267 osb
->dc_work_sequence
);
268 spin_unlock(&osb
->dc_task_lock
);
270 spin_lock(&osb
->osb_lock
);
271 out
+= snprintf(buf
+ out
, len
- out
, "%10s => Pid: %d Nodes:",
273 (osb
->recovery_thread_task
?
274 task_pid_nr(osb
->recovery_thread_task
) : -1));
275 if (rm
->rm_used
== 0)
276 out
+= snprintf(buf
+ out
, len
- out
, " None\n");
278 for (i
= 0; i
< rm
->rm_used
; i
++)
279 out
+= snprintf(buf
+ out
, len
- out
, " %d",
281 out
+= snprintf(buf
+ out
, len
- out
, "\n");
283 spin_unlock(&osb
->osb_lock
);
285 out
+= snprintf(buf
+ out
, len
- out
,
286 "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit",
287 (osb
->commit_task
? task_pid_nr(osb
->commit_task
) : -1),
288 osb
->osb_commit_interval
,
289 atomic_read(&osb
->needs_checkpoint
));
291 out
+= snprintf(buf
+ out
, len
- out
,
292 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
293 "Journal", osb
->journal
->j_state
,
294 osb
->journal
->j_trans_id
,
295 atomic_read(&osb
->journal
->j_num_trans
));
297 out
+= snprintf(buf
+ out
, len
- out
,
298 "%10s => GlobalAllocs: %d LocalAllocs: %d "
299 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
301 atomic_read(&osb
->alloc_stats
.bitmap_data
),
302 atomic_read(&osb
->alloc_stats
.local_data
),
303 atomic_read(&osb
->alloc_stats
.bg_allocs
),
304 atomic_read(&osb
->alloc_stats
.moves
),
305 atomic_read(&osb
->alloc_stats
.bg_extends
));
307 out
+= snprintf(buf
+ out
, len
- out
,
308 "%10s => State: %u Descriptor: %llu Size: %u bits "
309 "Default: %u bits\n",
310 "LocalAlloc", osb
->local_alloc_state
,
311 (unsigned long long)osb
->la_last_gd
,
312 osb
->local_alloc_bits
, osb
->local_alloc_default_bits
);
314 spin_lock(&osb
->osb_lock
);
315 out
+= snprintf(buf
+ out
, len
- out
,
316 "%10s => InodeSlot: %d StolenInodes: %d, "
317 "MetaSlot: %d StolenMeta: %d\n", "Steal",
318 osb
->s_inode_steal_slot
,
319 atomic_read(&osb
->s_num_inodes_stolen
),
320 osb
->s_meta_steal_slot
,
321 atomic_read(&osb
->s_num_meta_stolen
));
322 spin_unlock(&osb
->osb_lock
);
324 out
+= snprintf(buf
+ out
, len
- out
, "OrphanScan => ");
325 out
+= snprintf(buf
+ out
, len
- out
, "Local: %u Global: %u ",
326 os
->os_count
, os
->os_seqno
);
327 out
+= snprintf(buf
+ out
, len
- out
, " Last Scan: ");
328 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_INACTIVE
)
329 out
+= snprintf(buf
+ out
, len
- out
, "Disabled\n");
331 out
+= snprintf(buf
+ out
, len
- out
, "%lu seconds ago\n",
332 (get_seconds() - os
->os_scantime
.tv_sec
));
334 out
+= snprintf(buf
+ out
, len
- out
, "%10s => %3s %10s\n",
335 "Slots", "Num", "RecoGen");
336 for (i
= 0; i
< osb
->max_slots
; ++i
) {
337 out
+= snprintf(buf
+ out
, len
- out
,
338 "%10s %c %3d %10d\n",
340 (i
== osb
->slot_num
? '*' : ' '),
341 i
, osb
->slot_recovery_generations
[i
]);
347 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
349 struct ocfs2_super
*osb
= inode
->i_private
;
352 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
356 i_size_write(inode
, ocfs2_osb_dump(osb
, buf
, PAGE_SIZE
));
358 file
->private_data
= buf
;
365 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
367 kfree(file
->private_data
);
371 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
372 size_t nbytes
, loff_t
*ppos
)
374 return simple_read_from_buffer(buf
, nbytes
, ppos
, file
->private_data
,
375 i_size_read(file
->f_mapping
->host
));
378 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
382 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
386 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
387 size_t nbytes
, loff_t
*ppos
)
391 #endif /* CONFIG_DEBUG_FS */
393 static const struct file_operations ocfs2_osb_debug_fops
= {
394 .open
= ocfs2_osb_debug_open
,
395 .release
= ocfs2_debug_release
,
396 .read
= ocfs2_debug_read
,
397 .llseek
= generic_file_llseek
,
400 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
)
404 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
406 if (ocfs2_is_hard_readonly(osb
))
410 status
= ocfs2_flush_truncate_log(osb
);
414 ocfs2_schedule_truncate_log_flush(osb
, 0);
417 if (jbd2_journal_start_commit(OCFS2_SB(sb
)->journal
->j_journal
,
420 jbd2_log_wait_commit(OCFS2_SB(sb
)->journal
->j_journal
,
426 static int ocfs2_need_system_inode(struct ocfs2_super
*osb
, int ino
)
428 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)
429 && (ino
== USER_QUOTA_SYSTEM_INODE
430 || ino
== LOCAL_USER_QUOTA_SYSTEM_INODE
))
432 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)
433 && (ino
== GROUP_QUOTA_SYSTEM_INODE
434 || ino
== LOCAL_GROUP_QUOTA_SYSTEM_INODE
))
439 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
)
441 struct inode
*new = NULL
;
447 new = ocfs2_iget(osb
, osb
->root_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
449 status
= PTR_ERR(new);
453 osb
->root_inode
= new;
455 new = ocfs2_iget(osb
, osb
->system_dir_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
457 status
= PTR_ERR(new);
461 osb
->sys_root_inode
= new;
463 for (i
= OCFS2_FIRST_ONLINE_SYSTEM_INODE
;
464 i
<= OCFS2_LAST_GLOBAL_SYSTEM_INODE
; i
++) {
465 if (!ocfs2_need_system_inode(osb
, i
))
467 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
469 ocfs2_release_system_inodes(osb
);
472 /* FIXME: Should ERROR_RO_FS */
473 mlog(ML_ERROR
, "Unable to load system inode %d, "
474 "possibly corrupt fs?", i
);
477 // the array now has one ref, so drop this one
486 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
)
488 struct inode
*new = NULL
;
494 for (i
= OCFS2_LAST_GLOBAL_SYSTEM_INODE
+ 1;
495 i
< NUM_SYSTEM_INODES
;
497 if (!ocfs2_need_system_inode(osb
, i
))
499 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
501 ocfs2_release_system_inodes(osb
);
503 mlog(ML_ERROR
, "status=%d, sysfile=%d, slot=%d\n",
504 status
, i
, osb
->slot_num
);
507 /* the array now has one ref, so drop this one */
516 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
)
523 for (i
= 0; i
< NUM_GLOBAL_SYSTEM_INODES
; i
++) {
524 inode
= osb
->global_system_inodes
[i
];
527 osb
->global_system_inodes
[i
] = NULL
;
531 inode
= osb
->sys_root_inode
;
534 osb
->sys_root_inode
= NULL
;
537 inode
= osb
->root_inode
;
540 osb
->root_inode
= NULL
;
543 if (!osb
->local_system_inodes
)
546 for (i
= 0; i
< NUM_LOCAL_SYSTEM_INODES
* osb
->max_slots
; i
++) {
547 if (osb
->local_system_inodes
[i
]) {
548 iput(osb
->local_system_inodes
[i
]);
549 osb
->local_system_inodes
[i
] = NULL
;
553 kfree(osb
->local_system_inodes
);
554 osb
->local_system_inodes
= NULL
;
560 /* We're allocating fs objects, use GFP_NOFS */
561 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
)
563 struct ocfs2_inode_info
*oi
;
565 oi
= kmem_cache_alloc(ocfs2_inode_cachep
, GFP_NOFS
);
569 jbd2_journal_init_jbd_inode(&oi
->ip_jinode
, &oi
->vfs_inode
);
570 return &oi
->vfs_inode
;
573 static void ocfs2_destroy_inode(struct inode
*inode
)
575 kmem_cache_free(ocfs2_inode_cachep
, OCFS2_I(inode
));
578 static unsigned long long ocfs2_max_file_offset(unsigned int bbits
,
581 unsigned int bytes
= 1 << cbits
;
582 unsigned int trim
= bytes
;
583 unsigned int bitshift
= 32;
586 * i_size and all block offsets in ocfs2 are always 64 bits
587 * wide. i_clusters is 32 bits, in cluster-sized units. So on
588 * 64 bit platforms, cluster size will be the limiting factor.
591 #if BITS_PER_LONG == 32
592 # if defined(CONFIG_LBDAF)
593 BUILD_BUG_ON(sizeof(sector_t
) != 8);
595 * We might be limited by page cache size.
597 if (bytes
> PAGE_CACHE_SIZE
) {
598 bytes
= PAGE_CACHE_SIZE
;
601 * Shift by 31 here so that we don't get larger than
608 * We are limited by the size of sector_t. Use block size, as
609 * that's what we expose to the VFS.
618 * Trim by a whole cluster when we can actually approach the
619 * on-disk limits. Otherwise we can overflow i_clusters when
620 * an extent start is at the max offset.
622 return (((unsigned long long)bytes
) << bitshift
) - trim
;
625 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
)
627 int incompat_features
;
629 struct mount_options parsed_options
;
630 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
633 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 1) ||
634 !ocfs2_check_set_options(sb
, &parsed_options
)) {
639 tmp
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
|
641 if ((osb
->s_mount_opt
& tmp
) != (parsed_options
.mount_opt
& tmp
)) {
643 mlog(ML_ERROR
, "Cannot change heartbeat mode on remount\n");
647 if ((osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
) !=
648 (parsed_options
.mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
)) {
650 mlog(ML_ERROR
, "Cannot change data mode on remount\n");
654 /* Probably don't want this on remount; it might
655 * mess with other nodes */
656 if (!(osb
->s_mount_opt
& OCFS2_MOUNT_INODE64
) &&
657 (parsed_options
.mount_opt
& OCFS2_MOUNT_INODE64
)) {
659 mlog(ML_ERROR
, "Cannot enable inode64 on remount\n");
663 /* We're going to/from readonly mode. */
664 if ((*flags
& MS_RDONLY
) != (sb
->s_flags
& MS_RDONLY
)) {
665 /* Disable quota accounting before remounting RO */
666 if (*flags
& MS_RDONLY
) {
667 ret
= ocfs2_susp_quotas(osb
, 0);
671 /* Lock here so the check of HARD_RO and the potential
672 * setting of SOFT_RO is atomic. */
673 spin_lock(&osb
->osb_lock
);
674 if (osb
->osb_flags
& OCFS2_OSB_HARD_RO
) {
675 mlog(ML_ERROR
, "Remount on readonly device is forbidden.\n");
680 if (*flags
& MS_RDONLY
) {
681 mlog(0, "Going to ro mode.\n");
682 sb
->s_flags
|= MS_RDONLY
;
683 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
685 mlog(0, "Making ro filesystem writeable.\n");
687 if (osb
->osb_flags
& OCFS2_OSB_ERROR_FS
) {
688 mlog(ML_ERROR
, "Cannot remount RDWR "
689 "filesystem due to previous errors.\n");
693 incompat_features
= OCFS2_HAS_RO_COMPAT_FEATURE(sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
);
694 if (incompat_features
) {
695 mlog(ML_ERROR
, "Cannot remount RDWR because "
696 "of unsupported optional features "
697 "(%x).\n", incompat_features
);
701 sb
->s_flags
&= ~MS_RDONLY
;
702 osb
->osb_flags
&= ~OCFS2_OSB_SOFT_RO
;
705 spin_unlock(&osb
->osb_lock
);
706 /* Enable quota accounting after remounting RW */
707 if (!ret
&& !(*flags
& MS_RDONLY
)) {
708 if (sb_any_quota_suspended(sb
))
709 ret
= ocfs2_susp_quotas(osb
, 1);
711 ret
= ocfs2_enable_quotas(osb
);
713 /* Return back changes... */
714 spin_lock(&osb
->osb_lock
);
715 sb
->s_flags
|= MS_RDONLY
;
716 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
717 spin_unlock(&osb
->osb_lock
);
724 /* Only save off the new mount options in case of a successful
726 osb
->s_mount_opt
= parsed_options
.mount_opt
;
727 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
728 osb
->preferred_slot
= parsed_options
.slot
;
729 if (parsed_options
.commit_interval
)
730 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
732 if (!ocfs2_is_hard_readonly(osb
))
733 ocfs2_set_journal_params(osb
);
735 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
736 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ?
743 static int ocfs2_sb_probe(struct super_block
*sb
,
744 struct buffer_head
**bh
,
746 struct ocfs2_blockcheck_stats
*stats
)
749 struct ocfs1_vol_disk_hdr
*hdr
;
750 struct ocfs2_dinode
*di
;
756 *sector_size
= bdev_logical_block_size(sb
->s_bdev
);
757 if (*sector_size
> OCFS2_MAX_BLOCKSIZE
) {
758 mlog(ML_ERROR
, "Hardware sector size too large: %d (max=%d)\n",
759 *sector_size
, OCFS2_MAX_BLOCKSIZE
);
764 /* Can this really happen? */
765 if (*sector_size
< OCFS2_MIN_BLOCKSIZE
)
766 *sector_size
= OCFS2_MIN_BLOCKSIZE
;
768 /* check block zero for old format */
769 status
= ocfs2_get_sector(sb
, bh
, 0, *sector_size
);
774 hdr
= (struct ocfs1_vol_disk_hdr
*) (*bh
)->b_data
;
775 if (hdr
->major_version
== OCFS1_MAJOR_VERSION
) {
776 mlog(ML_ERROR
, "incompatible version: %u.%u\n",
777 hdr
->major_version
, hdr
->minor_version
);
780 if (memcmp(hdr
->signature
, OCFS1_VOLUME_SIGNATURE
,
781 strlen(OCFS1_VOLUME_SIGNATURE
)) == 0) {
782 mlog(ML_ERROR
, "incompatible volume signature: %8s\n",
789 mlog(ML_ERROR
, "This is an ocfs v1 filesystem which must be "
790 "upgraded before mounting with ocfs v2\n");
795 * Now check at magic offset for 512, 1024, 2048, 4096
796 * blocksizes. 4096 is the maximum blocksize because it is
797 * the minimum clustersize.
800 for (blksize
= *sector_size
;
801 blksize
<= OCFS2_MAX_BLOCKSIZE
;
803 tmpstat
= ocfs2_get_sector(sb
, bh
,
804 OCFS2_SUPER_BLOCK_BLKNO
,
811 di
= (struct ocfs2_dinode
*) (*bh
)->b_data
;
812 memset(stats
, 0, sizeof(struct ocfs2_blockcheck_stats
));
813 spin_lock_init(&stats
->b_lock
);
814 tmpstat
= ocfs2_verify_volume(di
, *bh
, blksize
, stats
);
819 if (tmpstat
!= -EAGAIN
) {
829 static int ocfs2_verify_heartbeat(struct ocfs2_super
*osb
)
831 u32 hb_enabled
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
;
833 if (osb
->s_mount_opt
& hb_enabled
) {
834 if (ocfs2_mount_local(osb
)) {
835 mlog(ML_ERROR
, "Cannot heartbeat on a locally "
836 "mounted device.\n");
839 if (ocfs2_userspace_stack(osb
)) {
840 mlog(ML_ERROR
, "Userspace stack expected, but "
841 "o2cb heartbeat arguments passed to mount\n");
844 if (((osb
->s_mount_opt
& OCFS2_MOUNT_HB_GLOBAL
) &&
845 !ocfs2_cluster_o2cb_global_heartbeat(osb
)) ||
846 ((osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) &&
847 ocfs2_cluster_o2cb_global_heartbeat(osb
))) {
848 mlog(ML_ERROR
, "Mismatching o2cb heartbeat modes\n");
853 if (!(osb
->s_mount_opt
& hb_enabled
)) {
854 if (!ocfs2_mount_local(osb
) && !ocfs2_is_hard_readonly(osb
) &&
855 !ocfs2_userspace_stack(osb
)) {
856 mlog(ML_ERROR
, "Heartbeat has to be started to mount "
857 "a read-write clustered device.\n");
866 * If we're using a userspace stack, mount should have passed
867 * a name that matches the disk. If not, mount should not
868 * have passed a stack.
870 static int ocfs2_verify_userspace_stack(struct ocfs2_super
*osb
,
871 struct mount_options
*mopt
)
873 if (!ocfs2_userspace_stack(osb
) && mopt
->cluster_stack
[0]) {
875 "cluster stack passed to mount, but this filesystem "
876 "does not support it\n");
880 if (ocfs2_userspace_stack(osb
) &&
881 strncmp(osb
->osb_cluster_stack
, mopt
->cluster_stack
,
882 OCFS2_STACK_LABEL_LEN
)) {
884 "cluster stack passed to mount (\"%s\") does not "
885 "match the filesystem (\"%s\")\n",
887 osb
->osb_cluster_stack
);
894 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
)
897 struct super_block
*sb
= osb
->sb
;
898 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
899 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
902 for (type
= 0; type
< MAXQUOTAS
; type
++) {
903 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
906 status
= dquot_resume(sb
, type
);
908 struct ocfs2_mem_dqinfo
*oinfo
;
910 /* Cancel periodic syncing before suspending */
911 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
912 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
913 status
= dquot_suspend(sb
, type
);
919 mlog(ML_ERROR
, "Failed to suspend/unsuspend quotas on "
920 "remount (error = %d).\n", status
);
924 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
)
926 struct inode
*inode
[MAXQUOTAS
] = { NULL
, NULL
};
927 struct super_block
*sb
= osb
->sb
;
928 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
929 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
930 unsigned int ino
[MAXQUOTAS
] = { LOCAL_USER_QUOTA_SYSTEM_INODE
,
931 LOCAL_GROUP_QUOTA_SYSTEM_INODE
};
935 sb_dqopt(sb
)->flags
|= DQUOT_QUOTA_SYS_FILE
| DQUOT_NEGATIVE_USAGE
;
936 for (type
= 0; type
< MAXQUOTAS
; type
++) {
937 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
939 inode
[type
] = ocfs2_get_system_file_inode(osb
, ino
[type
],
945 status
= dquot_enable(inode
[type
], type
, QFMT_OCFS2
,
946 DQUOT_USAGE_ENABLED
);
951 for (type
= 0; type
< MAXQUOTAS
; type
++)
955 ocfs2_disable_quotas(osb
);
956 for (type
= 0; type
< MAXQUOTAS
; type
++)
962 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
)
966 struct super_block
*sb
= osb
->sb
;
967 struct ocfs2_mem_dqinfo
*oinfo
;
969 /* We mostly ignore errors in this function because there's not much
970 * we can do when we see them */
971 for (type
= 0; type
< MAXQUOTAS
; type
++) {
972 if (!sb_has_quota_loaded(sb
, type
))
974 /* Cancel periodic syncing before we grab dqonoff_mutex */
975 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
976 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
977 inode
= igrab(sb
->s_dquot
.files
[type
]);
978 /* Turn off quotas. This will remove all dquot structures from
979 * memory and so they will be automatically synced to global
981 dquot_disable(sb
, type
, DQUOT_USAGE_ENABLED
|
982 DQUOT_LIMITS_ENABLED
);
989 /* Handle quota on quotactl */
990 static int ocfs2_quota_on(struct super_block
*sb
, int type
, int format_id
,
993 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
994 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
996 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
999 return dquot_enable(sb_dqopt(sb
)->files
[type
], type
,
1000 format_id
, DQUOT_LIMITS_ENABLED
);
1003 /* Handle quota off quotactl */
1004 static int ocfs2_quota_off(struct super_block
*sb
, int type
)
1006 return dquot_disable(sb
, type
, DQUOT_LIMITS_ENABLED
);
1009 static const struct quotactl_ops ocfs2_quotactl_ops
= {
1010 .quota_on
= ocfs2_quota_on
,
1011 .quota_off
= ocfs2_quota_off
,
1012 .quota_sync
= dquot_quota_sync
,
1013 .get_info
= dquot_get_dqinfo
,
1014 .set_info
= dquot_set_dqinfo
,
1015 .get_dqblk
= dquot_get_dqblk
,
1016 .set_dqblk
= dquot_set_dqblk
,
1019 static int ocfs2_fill_super(struct super_block
*sb
, void *data
, int silent
)
1021 struct dentry
*root
;
1022 int status
, sector_size
;
1023 struct mount_options parsed_options
;
1024 struct inode
*inode
= NULL
;
1025 struct ocfs2_super
*osb
= NULL
;
1026 struct buffer_head
*bh
= NULL
;
1028 struct ocfs2_blockcheck_stats stats
;
1030 mlog_entry("%p, %p, %i", sb
, data
, silent
);
1032 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 0)) {
1034 goto read_super_error
;
1037 /* probe for superblock */
1038 status
= ocfs2_sb_probe(sb
, &bh
, §or_size
, &stats
);
1040 mlog(ML_ERROR
, "superblock probe failed!\n");
1041 goto read_super_error
;
1044 status
= ocfs2_initialize_super(sb
, bh
, sector_size
, &stats
);
1048 goto read_super_error
;
1053 if (!ocfs2_check_set_options(sb
, &parsed_options
)) {
1055 goto read_super_error
;
1057 osb
->s_mount_opt
= parsed_options
.mount_opt
;
1058 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
1059 osb
->preferred_slot
= parsed_options
.slot
;
1060 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
1062 ocfs2_la_set_sizes(osb
, parsed_options
.localalloc_opt
);
1063 osb
->osb_resv_level
= parsed_options
.resv_level
;
1064 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1065 if (parsed_options
.dir_resv_level
== -1)
1066 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1068 osb
->osb_dir_resv_level
= parsed_options
.dir_resv_level
;
1070 status
= ocfs2_verify_userspace_stack(osb
, &parsed_options
);
1072 goto read_super_error
;
1074 sb
->s_magic
= OCFS2_SUPER_MAGIC
;
1076 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
1077 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ? MS_POSIXACL
: 0);
1079 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1081 if (bdev_read_only(sb
->s_bdev
)) {
1082 if (!(sb
->s_flags
& MS_RDONLY
)) {
1084 mlog(ML_ERROR
, "Readonly device detected but readonly "
1085 "mount was not specified.\n");
1086 goto read_super_error
;
1089 /* You should not be able to start a local heartbeat
1090 * on a readonly device. */
1091 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
1093 mlog(ML_ERROR
, "Local heartbeat specified on readonly "
1095 goto read_super_error
;
1098 status
= ocfs2_check_journals_nolocks(osb
);
1100 if (status
== -EROFS
)
1101 mlog(ML_ERROR
, "Recovery required on readonly "
1102 "file system, but write access is "
1106 goto read_super_error
;
1109 ocfs2_set_ro_flag(osb
, 1);
1111 printk(KERN_NOTICE
"Readonly device detected. No cluster "
1112 "services will be utilized for this mount. Recovery "
1113 "will be skipped.\n");
1116 if (!ocfs2_is_hard_readonly(osb
)) {
1117 if (sb
->s_flags
& MS_RDONLY
)
1118 ocfs2_set_ro_flag(osb
, 0);
1121 status
= ocfs2_verify_heartbeat(osb
);
1124 goto read_super_error
;
1127 osb
->osb_debug_root
= debugfs_create_dir(osb
->uuid_str
,
1128 ocfs2_debugfs_root
);
1129 if (!osb
->osb_debug_root
) {
1131 mlog(ML_ERROR
, "Unable to create per-mount debugfs root.\n");
1132 goto read_super_error
;
1135 osb
->osb_ctxt
= debugfs_create_file("fs_state", S_IFREG
|S_IRUSR
,
1136 osb
->osb_debug_root
,
1138 &ocfs2_osb_debug_fops
);
1139 if (!osb
->osb_ctxt
) {
1142 goto read_super_error
;
1145 if (ocfs2_meta_ecc(osb
)) {
1146 status
= ocfs2_blockcheck_stats_debugfs_install(
1147 &osb
->osb_ecc_stats
,
1148 osb
->osb_debug_root
);
1151 "Unable to create blockcheck statistics "
1153 goto read_super_error
;
1157 status
= ocfs2_mount_volume(sb
);
1158 if (osb
->root_inode
)
1159 inode
= igrab(osb
->root_inode
);
1162 goto read_super_error
;
1167 goto read_super_error
;
1170 root
= d_alloc_root(inode
);
1174 goto read_super_error
;
1179 ocfs2_complete_mount_recovery(osb
);
1181 if (ocfs2_mount_local(osb
))
1182 snprintf(nodestr
, sizeof(nodestr
), "local");
1184 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1186 printk(KERN_INFO
"ocfs2: Mounting device (%s) on (node %s, slot %d) "
1187 "with %s data mode.\n",
1188 osb
->dev_str
, nodestr
, osb
->slot_num
,
1189 osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
? "writeback" :
1192 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED
);
1193 wake_up(&osb
->osb_mount_event
);
1195 /* Now we can initialize quotas because we can afford to wait
1196 * for cluster locks recovery now. That also means that truncation
1197 * log recovery can happen but that waits for proper quota setup */
1198 if (!(sb
->s_flags
& MS_RDONLY
)) {
1199 status
= ocfs2_enable_quotas(osb
);
1201 /* We have to err-out specially here because
1202 * s_root is already set */
1204 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1205 wake_up(&osb
->osb_mount_event
);
1211 ocfs2_complete_quota_recovery(osb
);
1213 /* Now we wake up again for processes waiting for quotas */
1214 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED_QUOTAS
);
1215 wake_up(&osb
->osb_mount_event
);
1217 /* Start this when the mount is almost sure of being successful */
1218 ocfs2_orphan_scan_start(osb
);
1230 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1231 wake_up(&osb
->osb_mount_event
);
1232 ocfs2_dismount_volume(sb
, 1);
1239 static struct dentry
*ocfs2_mount(struct file_system_type
*fs_type
,
1241 const char *dev_name
,
1244 return mount_bdev(fs_type
, flags
, dev_name
, data
, ocfs2_fill_super
);
1247 static void ocfs2_kill_sb(struct super_block
*sb
)
1249 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1252 if (!osb
|| atomic_read(&osb
->vol_state
) == VOLUME_DISABLED
)
1255 /* Prevent further queueing of inode drop events */
1256 spin_lock(&dentry_list_lock
);
1257 ocfs2_set_osb_flag(osb
, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED
);
1258 spin_unlock(&dentry_list_lock
);
1259 /* Wait for work to finish and/or remove it */
1260 cancel_work_sync(&osb
->dentry_lock_work
);
1262 kill_block_super(sb
);
1265 static struct file_system_type ocfs2_fs_type
= {
1266 .owner
= THIS_MODULE
,
1268 .mount
= ocfs2_mount
,
1269 .kill_sb
= ocfs2_kill_sb
,
1271 .fs_flags
= FS_REQUIRES_DEV
|FS_RENAME_DOES_D_MOVE
,
1275 static int ocfs2_check_set_options(struct super_block
*sb
,
1276 struct mount_options
*options
)
1278 if (options
->mount_opt
& OCFS2_MOUNT_USRQUOTA
&&
1279 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1280 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)) {
1281 mlog(ML_ERROR
, "User quotas were requested, but this "
1282 "filesystem does not have the feature enabled.\n");
1285 if (options
->mount_opt
& OCFS2_MOUNT_GRPQUOTA
&&
1286 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1287 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)) {
1288 mlog(ML_ERROR
, "Group quotas were requested, but this "
1289 "filesystem does not have the feature enabled.\n");
1292 if (options
->mount_opt
& OCFS2_MOUNT_POSIX_ACL
&&
1293 !OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
)) {
1294 mlog(ML_ERROR
, "ACL support requested but extended attributes "
1295 "feature is not enabled\n");
1298 /* No ACL setting specified? Use XATTR feature... */
1299 if (!(options
->mount_opt
& (OCFS2_MOUNT_POSIX_ACL
|
1300 OCFS2_MOUNT_NO_POSIX_ACL
))) {
1301 if (OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
))
1302 options
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1304 options
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1309 static int ocfs2_parse_options(struct super_block
*sb
,
1311 struct mount_options
*mopt
,
1318 mlog_entry("remount: %d, options: \"%s\"\n", is_remount
,
1319 options
? options
: "(none)");
1321 mopt
->commit_interval
= 0;
1322 mopt
->mount_opt
= OCFS2_MOUNT_NOINTR
;
1323 mopt
->atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
1324 mopt
->slot
= OCFS2_INVALID_SLOT
;
1325 mopt
->localalloc_opt
= -1;
1326 mopt
->cluster_stack
[0] = '\0';
1327 mopt
->resv_level
= OCFS2_DEFAULT_RESV_LEVEL
;
1328 mopt
->dir_resv_level
= -1;
1335 while ((p
= strsep(&options
, ",")) != NULL
) {
1337 substring_t args
[MAX_OPT_ARGS
];
1342 token
= match_token(p
, tokens
, args
);
1345 mopt
->mount_opt
|= OCFS2_MOUNT_HB_LOCAL
;
1348 mopt
->mount_opt
|= OCFS2_MOUNT_HB_NONE
;
1351 mopt
->mount_opt
|= OCFS2_MOUNT_HB_GLOBAL
;
1354 if (match_int(&args
[0], &option
)) {
1359 mopt
->mount_opt
|= OCFS2_MOUNT_BARRIER
;
1361 mopt
->mount_opt
&= ~OCFS2_MOUNT_BARRIER
;
1364 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOINTR
;
1367 mopt
->mount_opt
|= OCFS2_MOUNT_NOINTR
;
1370 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
1373 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1375 case Opt_data_ordered
:
1376 mopt
->mount_opt
&= ~OCFS2_MOUNT_DATA_WRITEBACK
;
1378 case Opt_data_writeback
:
1379 mopt
->mount_opt
|= OCFS2_MOUNT_DATA_WRITEBACK
;
1381 case Opt_user_xattr
:
1382 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOUSERXATTR
;
1384 case Opt_nouser_xattr
:
1385 mopt
->mount_opt
|= OCFS2_MOUNT_NOUSERXATTR
;
1387 case Opt_atime_quantum
:
1388 if (match_int(&args
[0], &option
)) {
1393 mopt
->atime_quantum
= option
;
1397 if (match_int(&args
[0], &option
)) {
1402 mopt
->slot
= (s16
)option
;
1406 if (match_int(&args
[0], &option
)) {
1413 option
= JBD2_DEFAULT_MAX_COMMIT_AGE
;
1414 mopt
->commit_interval
= HZ
* option
;
1416 case Opt_localalloc
:
1418 if (match_int(&args
[0], &option
)) {
1423 mopt
->localalloc_opt
= option
;
1425 case Opt_localflocks
:
1427 * Changing this during remount could race
1428 * flock() requests, or "unbalance" existing
1429 * ones (e.g., a lock is taken in one mode but
1430 * dropped in the other). If users care enough
1431 * to flip locking modes during remount, we
1432 * could add a "local" flag to individual
1433 * flock structures for proper tracking of
1437 mopt
->mount_opt
|= OCFS2_MOUNT_LOCALFLOCKS
;
1440 /* Check both that the option we were passed
1441 * is of the right length and that it is a proper
1442 * string of the right length.
1444 if (((args
[0].to
- args
[0].from
) !=
1445 OCFS2_STACK_LABEL_LEN
) ||
1446 (strnlen(args
[0].from
,
1447 OCFS2_STACK_LABEL_LEN
) !=
1448 OCFS2_STACK_LABEL_LEN
)) {
1450 "Invalid cluster_stack option\n");
1454 memcpy(mopt
->cluster_stack
, args
[0].from
,
1455 OCFS2_STACK_LABEL_LEN
);
1456 mopt
->cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
1459 mopt
->mount_opt
|= OCFS2_MOUNT_INODE64
;
1462 mopt
->mount_opt
|= OCFS2_MOUNT_USRQUOTA
;
1465 mopt
->mount_opt
|= OCFS2_MOUNT_GRPQUOTA
;
1467 case Opt_coherency_buffered
:
1468 mopt
->mount_opt
|= OCFS2_MOUNT_COHERENCY_BUFFERED
;
1470 case Opt_coherency_full
:
1471 mopt
->mount_opt
&= ~OCFS2_MOUNT_COHERENCY_BUFFERED
;
1474 mopt
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1475 mopt
->mount_opt
&= ~OCFS2_MOUNT_NO_POSIX_ACL
;
1478 mopt
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1479 mopt
->mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
1481 case Opt_resv_level
:
1484 if (match_int(&args
[0], &option
)) {
1488 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1489 option
< OCFS2_MAX_RESV_LEVEL
)
1490 mopt
->resv_level
= option
;
1492 case Opt_dir_resv_level
:
1495 if (match_int(&args
[0], &option
)) {
1499 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1500 option
< OCFS2_MAX_RESV_LEVEL
)
1501 mopt
->dir_resv_level
= option
;
1505 "Unrecognized mount option \"%s\" "
1506 "or missing value\n", p
);
1512 /* Ensure only one heartbeat mode */
1513 tmp
= mopt
->mount_opt
& (OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
|
1514 OCFS2_MOUNT_HB_NONE
);
1515 if (hweight32(tmp
) != 1) {
1516 mlog(ML_ERROR
, "Invalid heartbeat mount options\n");
1528 static int ocfs2_show_options(struct seq_file
*s
, struct vfsmount
*mnt
)
1530 struct ocfs2_super
*osb
= OCFS2_SB(mnt
->mnt_sb
);
1531 unsigned long opts
= osb
->s_mount_opt
;
1532 unsigned int local_alloc_megs
;
1534 if (opts
& (OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
)) {
1535 seq_printf(s
, ",_netdev");
1536 if (opts
& OCFS2_MOUNT_HB_LOCAL
)
1537 seq_printf(s
, ",%s", OCFS2_HB_LOCAL
);
1539 seq_printf(s
, ",%s", OCFS2_HB_GLOBAL
);
1541 seq_printf(s
, ",%s", OCFS2_HB_NONE
);
1543 if (opts
& OCFS2_MOUNT_NOINTR
)
1544 seq_printf(s
, ",nointr");
1546 if (opts
& OCFS2_MOUNT_DATA_WRITEBACK
)
1547 seq_printf(s
, ",data=writeback");
1549 seq_printf(s
, ",data=ordered");
1551 if (opts
& OCFS2_MOUNT_BARRIER
)
1552 seq_printf(s
, ",barrier=1");
1554 if (opts
& OCFS2_MOUNT_ERRORS_PANIC
)
1555 seq_printf(s
, ",errors=panic");
1557 seq_printf(s
, ",errors=remount-ro");
1559 if (osb
->preferred_slot
!= OCFS2_INVALID_SLOT
)
1560 seq_printf(s
, ",preferred_slot=%d", osb
->preferred_slot
);
1562 if (osb
->s_atime_quantum
!= OCFS2_DEFAULT_ATIME_QUANTUM
)
1563 seq_printf(s
, ",atime_quantum=%u", osb
->s_atime_quantum
);
1565 if (osb
->osb_commit_interval
)
1566 seq_printf(s
, ",commit=%u",
1567 (unsigned) (osb
->osb_commit_interval
/ HZ
));
1569 local_alloc_megs
= osb
->local_alloc_bits
>> (20 - osb
->s_clustersize_bits
);
1570 if (local_alloc_megs
!= ocfs2_la_default_mb(osb
))
1571 seq_printf(s
, ",localalloc=%d", local_alloc_megs
);
1573 if (opts
& OCFS2_MOUNT_LOCALFLOCKS
)
1574 seq_printf(s
, ",localflocks,");
1576 if (osb
->osb_cluster_stack
[0])
1577 seq_printf(s
, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN
,
1578 osb
->osb_cluster_stack
);
1579 if (opts
& OCFS2_MOUNT_USRQUOTA
)
1580 seq_printf(s
, ",usrquota");
1581 if (opts
& OCFS2_MOUNT_GRPQUOTA
)
1582 seq_printf(s
, ",grpquota");
1584 if (opts
& OCFS2_MOUNT_COHERENCY_BUFFERED
)
1585 seq_printf(s
, ",coherency=buffered");
1587 seq_printf(s
, ",coherency=full");
1589 if (opts
& OCFS2_MOUNT_NOUSERXATTR
)
1590 seq_printf(s
, ",nouser_xattr");
1592 seq_printf(s
, ",user_xattr");
1594 if (opts
& OCFS2_MOUNT_INODE64
)
1595 seq_printf(s
, ",inode64");
1597 if (opts
& OCFS2_MOUNT_POSIX_ACL
)
1598 seq_printf(s
, ",acl");
1600 seq_printf(s
, ",noacl");
1602 if (osb
->osb_resv_level
!= OCFS2_DEFAULT_RESV_LEVEL
)
1603 seq_printf(s
, ",resv_level=%d", osb
->osb_resv_level
);
1605 if (osb
->osb_dir_resv_level
!= osb
->osb_resv_level
)
1606 seq_printf(s
, ",dir_resv_level=%d", osb
->osb_resv_level
);
1611 static int __init
ocfs2_init(void)
1617 ocfs2_print_version();
1619 status
= init_ocfs2_uptodate_cache();
1625 status
= ocfs2_initialize_mem_caches();
1631 ocfs2_wq
= create_singlethread_workqueue("ocfs2_wq");
1637 ocfs2_debugfs_root
= debugfs_create_dir("ocfs2", NULL
);
1638 if (!ocfs2_debugfs_root
) {
1640 mlog(ML_ERROR
, "Unable to create ocfs2 debugfs root.\n");
1643 status
= ocfs2_quota_setup();
1647 ocfs2_set_locking_protocol();
1649 status
= register_quota_format(&ocfs2_quota_format
);
1652 ocfs2_quota_shutdown();
1653 ocfs2_free_mem_caches();
1654 exit_ocfs2_uptodate_cache();
1660 return register_filesystem(&ocfs2_fs_type
);
1665 static void __exit
ocfs2_exit(void)
1669 ocfs2_quota_shutdown();
1672 flush_workqueue(ocfs2_wq
);
1673 destroy_workqueue(ocfs2_wq
);
1676 unregister_quota_format(&ocfs2_quota_format
);
1678 debugfs_remove(ocfs2_debugfs_root
);
1680 ocfs2_free_mem_caches();
1682 unregister_filesystem(&ocfs2_fs_type
);
1684 exit_ocfs2_uptodate_cache();
1689 static void ocfs2_put_super(struct super_block
*sb
)
1691 mlog_entry("(0x%p)\n", sb
);
1693 ocfs2_sync_blockdev(sb
);
1694 ocfs2_dismount_volume(sb
, 0);
1699 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1701 struct ocfs2_super
*osb
;
1702 u32 numbits
, freebits
;
1704 struct ocfs2_dinode
*bm_lock
;
1705 struct buffer_head
*bh
= NULL
;
1706 struct inode
*inode
= NULL
;
1708 mlog_entry("(%p, %p)\n", dentry
->d_sb
, buf
);
1710 osb
= OCFS2_SB(dentry
->d_sb
);
1712 inode
= ocfs2_get_system_file_inode(osb
,
1713 GLOBAL_BITMAP_SYSTEM_INODE
,
1714 OCFS2_INVALID_SLOT
);
1716 mlog(ML_ERROR
, "failed to get bitmap inode\n");
1721 status
= ocfs2_inode_lock(inode
, &bh
, 0);
1727 bm_lock
= (struct ocfs2_dinode
*) bh
->b_data
;
1729 numbits
= le32_to_cpu(bm_lock
->id1
.bitmap1
.i_total
);
1730 freebits
= numbits
- le32_to_cpu(bm_lock
->id1
.bitmap1
.i_used
);
1732 buf
->f_type
= OCFS2_SUPER_MAGIC
;
1733 buf
->f_bsize
= dentry
->d_sb
->s_blocksize
;
1734 buf
->f_namelen
= OCFS2_MAX_FILENAME_LEN
;
1735 buf
->f_blocks
= ((sector_t
) numbits
) *
1736 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1737 buf
->f_bfree
= ((sector_t
) freebits
) *
1738 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1739 buf
->f_bavail
= buf
->f_bfree
;
1740 buf
->f_files
= numbits
;
1741 buf
->f_ffree
= freebits
;
1742 buf
->f_fsid
.val
[0] = crc32_le(0, osb
->uuid_str
, OCFS2_VOL_UUID_LEN
)
1744 buf
->f_fsid
.val
[1] = crc32_le(0, osb
->uuid_str
+ OCFS2_VOL_UUID_LEN
,
1745 OCFS2_VOL_UUID_LEN
) & 0xFFFFFFFFUL
;
1749 ocfs2_inode_unlock(inode
, 0);
1760 static void ocfs2_inode_init_once(void *data
)
1762 struct ocfs2_inode_info
*oi
= data
;
1765 oi
->ip_open_count
= 0;
1766 spin_lock_init(&oi
->ip_lock
);
1767 ocfs2_extent_map_init(&oi
->vfs_inode
);
1768 INIT_LIST_HEAD(&oi
->ip_io_markers
);
1769 oi
->ip_dir_start_lookup
= 0;
1771 init_rwsem(&oi
->ip_alloc_sem
);
1772 init_rwsem(&oi
->ip_xattr_sem
);
1773 mutex_init(&oi
->ip_io_mutex
);
1775 oi
->ip_blkno
= 0ULL;
1776 oi
->ip_clusters
= 0;
1778 ocfs2_resv_init_once(&oi
->ip_la_data_resv
);
1780 ocfs2_lock_res_init_once(&oi
->ip_rw_lockres
);
1781 ocfs2_lock_res_init_once(&oi
->ip_inode_lockres
);
1782 ocfs2_lock_res_init_once(&oi
->ip_open_lockres
);
1784 ocfs2_metadata_cache_init(INODE_CACHE(&oi
->vfs_inode
),
1785 &ocfs2_inode_caching_ops
);
1787 inode_init_once(&oi
->vfs_inode
);
1790 static int ocfs2_initialize_mem_caches(void)
1792 ocfs2_inode_cachep
= kmem_cache_create("ocfs2_inode_cache",
1793 sizeof(struct ocfs2_inode_info
),
1795 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1797 ocfs2_inode_init_once
);
1798 ocfs2_dquot_cachep
= kmem_cache_create("ocfs2_dquot_cache",
1799 sizeof(struct ocfs2_dquot
),
1801 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1804 ocfs2_qf_chunk_cachep
= kmem_cache_create("ocfs2_qf_chunk_cache",
1805 sizeof(struct ocfs2_quota_chunk
),
1807 (SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
),
1809 if (!ocfs2_inode_cachep
|| !ocfs2_dquot_cachep
||
1810 !ocfs2_qf_chunk_cachep
) {
1811 if (ocfs2_inode_cachep
)
1812 kmem_cache_destroy(ocfs2_inode_cachep
);
1813 if (ocfs2_dquot_cachep
)
1814 kmem_cache_destroy(ocfs2_dquot_cachep
);
1815 if (ocfs2_qf_chunk_cachep
)
1816 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1823 static void ocfs2_free_mem_caches(void)
1825 if (ocfs2_inode_cachep
)
1826 kmem_cache_destroy(ocfs2_inode_cachep
);
1827 ocfs2_inode_cachep
= NULL
;
1829 if (ocfs2_dquot_cachep
)
1830 kmem_cache_destroy(ocfs2_dquot_cachep
);
1831 ocfs2_dquot_cachep
= NULL
;
1833 if (ocfs2_qf_chunk_cachep
)
1834 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1835 ocfs2_qf_chunk_cachep
= NULL
;
1838 static int ocfs2_get_sector(struct super_block
*sb
,
1839 struct buffer_head
**bh
,
1843 if (!sb_set_blocksize(sb
, sect_size
)) {
1844 mlog(ML_ERROR
, "unable to set blocksize\n");
1848 *bh
= sb_getblk(sb
, block
);
1854 if (!buffer_dirty(*bh
))
1855 clear_buffer_uptodate(*bh
);
1857 ll_rw_block(READ
, 1, bh
);
1858 wait_on_buffer(*bh
);
1859 if (!buffer_uptodate(*bh
)) {
1869 static int ocfs2_mount_volume(struct super_block
*sb
)
1872 int unlock_super
= 0;
1873 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1877 if (ocfs2_is_hard_readonly(osb
))
1880 status
= ocfs2_dlm_init(osb
);
1886 status
= ocfs2_super_lock(osb
, 1);
1893 /* This will load up the node map and add ourselves to it. */
1894 status
= ocfs2_find_slot(osb
);
1900 /* load all node-local system inodes */
1901 status
= ocfs2_init_local_system_inodes(osb
);
1907 status
= ocfs2_check_volume(osb
);
1913 status
= ocfs2_truncate_log_init(osb
);
1919 ocfs2_super_unlock(osb
, 1);
1925 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
)
1927 int tmp
, hangup_needed
= 0;
1928 struct ocfs2_super
*osb
= NULL
;
1931 mlog_entry("(0x%p)\n", sb
);
1937 debugfs_remove(osb
->osb_ctxt
);
1940 * Flush inode dropping work queue so that deletes are
1941 * performed while the filesystem is still working
1943 ocfs2_drop_all_dl_inodes(osb
);
1945 /* Orphan scan should be stopped as early as possible */
1946 ocfs2_orphan_scan_stop(osb
);
1948 ocfs2_disable_quotas(osb
);
1950 ocfs2_shutdown_local_alloc(osb
);
1952 ocfs2_truncate_log_shutdown(osb
);
1954 /* This will disable recovery and flush any recovery work. */
1955 ocfs2_recovery_exit(osb
);
1957 ocfs2_journal_shutdown(osb
);
1959 ocfs2_sync_blockdev(sb
);
1961 ocfs2_purge_refcount_trees(osb
);
1963 /* No cluster connection means we've failed during mount, so skip
1964 * all the steps which depended on that to complete. */
1966 tmp
= ocfs2_super_lock(osb
, 1);
1973 if (osb
->slot_num
!= OCFS2_INVALID_SLOT
)
1974 ocfs2_put_slot(osb
);
1977 ocfs2_super_unlock(osb
, 1);
1979 ocfs2_release_system_inodes(osb
);
1982 * If we're dismounting due to mount error, mount.ocfs2 will clean
1983 * up heartbeat. If we're a local mount, there is no heartbeat.
1984 * If we failed before we got a uuid_str yet, we can't stop
1985 * heartbeat. Otherwise, do it.
1987 if (!mnt_err
&& !ocfs2_mount_local(osb
) && osb
->uuid_str
)
1991 ocfs2_dlm_shutdown(osb
, hangup_needed
);
1993 ocfs2_blockcheck_stats_debugfs_remove(&osb
->osb_ecc_stats
);
1994 debugfs_remove(osb
->osb_debug_root
);
1997 ocfs2_cluster_hangup(osb
->uuid_str
, strlen(osb
->uuid_str
));
1999 atomic_set(&osb
->vol_state
, VOLUME_DISMOUNTED
);
2001 if (ocfs2_mount_local(osb
))
2002 snprintf(nodestr
, sizeof(nodestr
), "local");
2004 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
2006 printk(KERN_INFO
"ocfs2: Unmounting device (%s) on (node %s)\n",
2007 osb
->dev_str
, nodestr
);
2009 ocfs2_delete_osb(osb
);
2012 sb
->s_fs_info
= NULL
;
2015 static int ocfs2_setup_osb_uuid(struct ocfs2_super
*osb
, const unsigned char *uuid
,
2016 unsigned uuid_bytes
)
2021 BUG_ON(uuid_bytes
!= OCFS2_VOL_UUID_LEN
);
2023 osb
->uuid_str
= kzalloc(OCFS2_VOL_UUID_LEN
* 2 + 1, GFP_KERNEL
);
2024 if (osb
->uuid_str
== NULL
)
2027 for (i
= 0, ptr
= osb
->uuid_str
; i
< OCFS2_VOL_UUID_LEN
; i
++) {
2028 /* print with null */
2029 ret
= snprintf(ptr
, 3, "%02X", uuid
[i
]);
2030 if (ret
!= 2) /* drop super cleans up */
2032 /* then only advance past the last char */
2039 /* Make sure entire volume is addressable by our journal. Requires
2040 osb_clusters_at_boot to be valid and for the journal to have been
2041 initialized by ocfs2_journal_init(). */
2042 static int ocfs2_journal_addressable(struct ocfs2_super
*osb
)
2046 ocfs2_clusters_to_blocks(osb
->sb
,
2047 osb
->osb_clusters_at_boot
) - 1;
2049 /* 32-bit block number is always OK. */
2050 if (max_block
<= (u32
)~0ULL)
2053 /* Volume is "huge", so see if our journal is new enough to
2055 if (!(OCFS2_HAS_COMPAT_FEATURE(osb
->sb
,
2056 OCFS2_FEATURE_COMPAT_JBD2_SB
) &&
2057 jbd2_journal_check_used_features(osb
->journal
->j_journal
, 0, 0,
2058 JBD2_FEATURE_INCOMPAT_64BIT
))) {
2059 mlog(ML_ERROR
, "The journal cannot address the entire volume. "
2060 "Enable the 'block64' journal option with tunefs.ocfs2");
2069 static int ocfs2_initialize_super(struct super_block
*sb
,
2070 struct buffer_head
*bh
,
2072 struct ocfs2_blockcheck_stats
*stats
)
2075 int i
, cbits
, bbits
;
2076 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*)bh
->b_data
;
2077 struct inode
*inode
= NULL
;
2078 struct ocfs2_journal
*journal
;
2079 __le32 uuid_net_key
;
2080 struct ocfs2_super
*osb
;
2085 osb
= kzalloc(sizeof(struct ocfs2_super
), GFP_KERNEL
);
2092 sb
->s_fs_info
= osb
;
2093 sb
->s_op
= &ocfs2_sops
;
2094 sb
->s_export_op
= &ocfs2_export_ops
;
2095 sb
->s_qcop
= &ocfs2_quotactl_ops
;
2096 sb
->dq_op
= &ocfs2_quota_operations
;
2097 sb
->s_xattr
= ocfs2_xattr_handlers
;
2098 sb
->s_time_gran
= 1;
2099 sb
->s_flags
|= MS_NOATIME
;
2100 /* this is needed to support O_LARGEFILE */
2101 cbits
= le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2102 bbits
= le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
);
2103 sb
->s_maxbytes
= ocfs2_max_file_offset(bbits
, cbits
);
2105 osb
->osb_dx_mask
= (1 << (cbits
- bbits
)) - 1;
2107 for (i
= 0; i
< 3; i
++)
2108 osb
->osb_dx_seed
[i
] = le32_to_cpu(di
->id2
.i_super
.s_dx_seed
[i
]);
2109 osb
->osb_dx_seed
[3] = le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2112 /* Save off for ocfs2_rw_direct */
2113 osb
->s_sectsize_bits
= blksize_bits(sector_size
);
2114 BUG_ON(!osb
->s_sectsize_bits
);
2116 spin_lock_init(&osb
->dc_task_lock
);
2117 init_waitqueue_head(&osb
->dc_event
);
2118 osb
->dc_work_sequence
= 0;
2119 osb
->dc_wake_sequence
= 0;
2120 INIT_LIST_HEAD(&osb
->blocked_lock_list
);
2121 osb
->blocked_lock_count
= 0;
2122 spin_lock_init(&osb
->osb_lock
);
2123 spin_lock_init(&osb
->osb_xattr_lock
);
2124 ocfs2_init_steal_slots(osb
);
2126 atomic_set(&osb
->alloc_stats
.moves
, 0);
2127 atomic_set(&osb
->alloc_stats
.local_data
, 0);
2128 atomic_set(&osb
->alloc_stats
.bitmap_data
, 0);
2129 atomic_set(&osb
->alloc_stats
.bg_allocs
, 0);
2130 atomic_set(&osb
->alloc_stats
.bg_extends
, 0);
2132 /* Copy the blockcheck stats from the superblock probe */
2133 osb
->osb_ecc_stats
= *stats
;
2135 ocfs2_init_node_maps(osb
);
2137 snprintf(osb
->dev_str
, sizeof(osb
->dev_str
), "%u,%u",
2138 MAJOR(osb
->sb
->s_dev
), MINOR(osb
->sb
->s_dev
));
2140 osb
->max_slots
= le16_to_cpu(di
->id2
.i_super
.s_max_slots
);
2141 if (osb
->max_slots
> OCFS2_MAX_SLOTS
|| osb
->max_slots
== 0) {
2142 mlog(ML_ERROR
, "Invalid number of node slots (%u)\n",
2147 mlog(0, "max_slots for this device: %u\n", osb
->max_slots
);
2149 ocfs2_orphan_scan_init(osb
);
2151 status
= ocfs2_recovery_init(osb
);
2153 mlog(ML_ERROR
, "Unable to initialize recovery state\n");
2158 init_waitqueue_head(&osb
->checkpoint_event
);
2159 atomic_set(&osb
->needs_checkpoint
, 0);
2161 osb
->s_atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
2163 osb
->slot_num
= OCFS2_INVALID_SLOT
;
2165 osb
->s_xattr_inline_size
= le16_to_cpu(
2166 di
->id2
.i_super
.s_xattr_inline_size
);
2168 osb
->local_alloc_state
= OCFS2_LA_UNUSED
;
2169 osb
->local_alloc_bh
= NULL
;
2170 INIT_DELAYED_WORK(&osb
->la_enable_wq
, ocfs2_la_enable_worker
);
2172 init_waitqueue_head(&osb
->osb_mount_event
);
2174 status
= ocfs2_resmap_init(osb
, &osb
->osb_la_resmap
);
2180 osb
->vol_label
= kmalloc(OCFS2_MAX_VOL_LABEL_LEN
, GFP_KERNEL
);
2181 if (!osb
->vol_label
) {
2182 mlog(ML_ERROR
, "unable to alloc vol label\n");
2187 osb
->slot_recovery_generations
=
2188 kcalloc(osb
->max_slots
, sizeof(*osb
->slot_recovery_generations
),
2190 if (!osb
->slot_recovery_generations
) {
2196 init_waitqueue_head(&osb
->osb_wipe_event
);
2197 osb
->osb_orphan_wipes
= kcalloc(osb
->max_slots
,
2198 sizeof(*osb
->osb_orphan_wipes
),
2200 if (!osb
->osb_orphan_wipes
) {
2206 osb
->osb_rf_lock_tree
= RB_ROOT
;
2208 osb
->s_feature_compat
=
2209 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_compat
);
2210 osb
->s_feature_ro_compat
=
2211 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_ro_compat
);
2212 osb
->s_feature_incompat
=
2213 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_incompat
);
2215 if ((i
= OCFS2_HAS_INCOMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_INCOMPAT_SUPP
))) {
2216 mlog(ML_ERROR
, "couldn't mount because of unsupported "
2217 "optional features (%x).\n", i
);
2221 if (!(osb
->sb
->s_flags
& MS_RDONLY
) &&
2222 (i
= OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
))) {
2223 mlog(ML_ERROR
, "couldn't mount RDWR because of "
2224 "unsupported optional features (%x).\n", i
);
2229 if (ocfs2_clusterinfo_valid(osb
)) {
2230 osb
->osb_stackflags
=
2231 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stackflags
;
2232 memcpy(osb
->osb_cluster_stack
,
2233 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stack
,
2234 OCFS2_STACK_LABEL_LEN
);
2235 osb
->osb_cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
2236 if (strlen(osb
->osb_cluster_stack
) != OCFS2_STACK_LABEL_LEN
) {
2238 "couldn't mount because of an invalid "
2239 "cluster stack label (%s) \n",
2240 osb
->osb_cluster_stack
);
2245 /* The empty string is identical with classic tools that
2246 * don't know about s_cluster_info. */
2247 osb
->osb_cluster_stack
[0] = '\0';
2250 get_random_bytes(&osb
->s_next_generation
, sizeof(u32
));
2253 * This should be done in ocfs2_journal_init(), but unknown
2254 * ordering issues will cause the filesystem to crash.
2255 * If anyone wants to figure out what part of the code
2256 * refers to osb->journal before ocfs2_journal_init() is run,
2259 /* initialize our journal structure */
2261 journal
= kzalloc(sizeof(struct ocfs2_journal
), GFP_KERNEL
);
2263 mlog(ML_ERROR
, "unable to alloc journal\n");
2267 osb
->journal
= journal
;
2268 journal
->j_osb
= osb
;
2270 atomic_set(&journal
->j_num_trans
, 0);
2271 init_rwsem(&journal
->j_trans_barrier
);
2272 init_waitqueue_head(&journal
->j_checkpointed
);
2273 spin_lock_init(&journal
->j_lock
);
2274 journal
->j_trans_id
= (unsigned long) 1;
2275 INIT_LIST_HEAD(&journal
->j_la_cleanups
);
2276 INIT_WORK(&journal
->j_recovery_work
, ocfs2_complete_recovery
);
2277 journal
->j_state
= OCFS2_JOURNAL_FREE
;
2279 INIT_WORK(&osb
->dentry_lock_work
, ocfs2_drop_dl_inodes
);
2280 osb
->dentry_lock_list
= NULL
;
2282 /* get some pseudo constants for clustersize bits */
2283 osb
->s_clustersize_bits
=
2284 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2285 osb
->s_clustersize
= 1 << osb
->s_clustersize_bits
;
2286 mlog(0, "clusterbits=%d\n", osb
->s_clustersize_bits
);
2288 if (osb
->s_clustersize
< OCFS2_MIN_CLUSTERSIZE
||
2289 osb
->s_clustersize
> OCFS2_MAX_CLUSTERSIZE
) {
2290 mlog(ML_ERROR
, "Volume has invalid cluster size (%d)\n",
2291 osb
->s_clustersize
);
2296 total_blocks
= ocfs2_clusters_to_blocks(osb
->sb
,
2297 le32_to_cpu(di
->i_clusters
));
2299 status
= generic_check_addressable(osb
->sb
->s_blocksize_bits
,
2302 mlog(ML_ERROR
, "Volume too large "
2303 "to mount safely on this system");
2308 if (ocfs2_setup_osb_uuid(osb
, di
->id2
.i_super
.s_uuid
,
2309 sizeof(di
->id2
.i_super
.s_uuid
))) {
2310 mlog(ML_ERROR
, "Out of memory trying to setup our uuid.\n");
2315 memcpy(&uuid_net_key
, di
->id2
.i_super
.s_uuid
, sizeof(uuid_net_key
));
2317 strncpy(osb
->vol_label
, di
->id2
.i_super
.s_label
, 63);
2318 osb
->vol_label
[63] = '\0';
2319 osb
->root_blkno
= le64_to_cpu(di
->id2
.i_super
.s_root_blkno
);
2320 osb
->system_dir_blkno
= le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
);
2321 osb
->first_cluster_group_blkno
=
2322 le64_to_cpu(di
->id2
.i_super
.s_first_cluster_group
);
2323 osb
->fs_generation
= le32_to_cpu(di
->i_fs_generation
);
2324 osb
->uuid_hash
= le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2325 mlog(0, "vol_label: %s\n", osb
->vol_label
);
2326 mlog(0, "uuid: %s\n", osb
->uuid_str
);
2327 mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n",
2328 (unsigned long long)osb
->root_blkno
,
2329 (unsigned long long)osb
->system_dir_blkno
);
2331 osb
->osb_dlm_debug
= ocfs2_new_dlm_debug();
2332 if (!osb
->osb_dlm_debug
) {
2338 atomic_set(&osb
->vol_state
, VOLUME_INIT
);
2340 /* load root, system_dir, and all global system inodes */
2341 status
= ocfs2_init_global_system_inodes(osb
);
2350 inode
= ocfs2_get_system_file_inode(osb
, GLOBAL_BITMAP_SYSTEM_INODE
,
2351 OCFS2_INVALID_SLOT
);
2358 osb
->bitmap_blkno
= OCFS2_I(inode
)->ip_blkno
;
2359 osb
->osb_clusters_at_boot
= OCFS2_I(inode
)->ip_clusters
;
2362 osb
->bitmap_cpg
= ocfs2_group_bitmap_size(sb
, 0,
2363 osb
->s_feature_incompat
) * 8;
2365 status
= ocfs2_init_slot_info(osb
);
2377 * will return: -EAGAIN if it is ok to keep searching for superblocks
2378 * -EINVAL if there is a bad superblock
2381 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
2382 struct buffer_head
*bh
,
2384 struct ocfs2_blockcheck_stats
*stats
)
2386 int status
= -EAGAIN
;
2390 if (memcmp(di
->i_signature
, OCFS2_SUPER_BLOCK_SIGNATURE
,
2391 strlen(OCFS2_SUPER_BLOCK_SIGNATURE
)) == 0) {
2392 /* We have to do a raw check of the feature here */
2393 if (le32_to_cpu(di
->id2
.i_super
.s_feature_incompat
) &
2394 OCFS2_FEATURE_INCOMPAT_META_ECC
) {
2395 status
= ocfs2_block_check_validate(bh
->b_data
,
2403 if ((1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
)) != blksz
) {
2404 mlog(ML_ERROR
, "found superblock with incorrect block "
2405 "size: found %u, should be %u\n",
2406 1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
),
2408 } else if (le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
) !=
2409 OCFS2_MAJOR_REV_LEVEL
||
2410 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
) !=
2411 OCFS2_MINOR_REV_LEVEL
) {
2412 mlog(ML_ERROR
, "found superblock with bad version: "
2413 "found %u.%u, should be %u.%u\n",
2414 le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
),
2415 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
),
2416 OCFS2_MAJOR_REV_LEVEL
,
2417 OCFS2_MINOR_REV_LEVEL
);
2418 } else if (bh
->b_blocknr
!= le64_to_cpu(di
->i_blkno
)) {
2419 mlog(ML_ERROR
, "bad block number on superblock: "
2420 "found %llu, should be %llu\n",
2421 (unsigned long long)le64_to_cpu(di
->i_blkno
),
2422 (unsigned long long)bh
->b_blocknr
);
2423 } else if (le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) < 12 ||
2424 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) > 20) {
2425 mlog(ML_ERROR
, "bad cluster size found: %u\n",
2426 1 << le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
));
2427 } else if (!le64_to_cpu(di
->id2
.i_super
.s_root_blkno
)) {
2428 mlog(ML_ERROR
, "bad root_blkno: 0\n");
2429 } else if (!le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
)) {
2430 mlog(ML_ERROR
, "bad system_dir_blkno: 0\n");
2431 } else if (le16_to_cpu(di
->id2
.i_super
.s_max_slots
) > OCFS2_MAX_SLOTS
) {
2433 "Superblock slots found greater than file system "
2434 "maximum: found %u, max %u\n",
2435 le16_to_cpu(di
->id2
.i_super
.s_max_slots
),
2448 static int ocfs2_check_volume(struct ocfs2_super
*osb
)
2453 struct ocfs2_dinode
*local_alloc
= NULL
; /* only used if we
2459 /* Init our journal object. */
2460 status
= ocfs2_journal_init(osb
->journal
, &dirty
);
2462 mlog(ML_ERROR
, "Could not initialize journal!\n");
2466 /* Now that journal has been initialized, check to make sure
2467 entire volume is addressable. */
2468 status
= ocfs2_journal_addressable(osb
);
2472 /* If the journal was unmounted cleanly then we don't want to
2473 * recover anything. Otherwise, journal_load will do that
2474 * dirty work for us :) */
2476 status
= ocfs2_journal_wipe(osb
->journal
, 0);
2482 mlog(ML_NOTICE
, "File system was not unmounted cleanly, "
2483 "recovering volume.\n");
2486 local
= ocfs2_mount_local(osb
);
2488 /* will play back anything left in the journal. */
2489 status
= ocfs2_journal_load(osb
->journal
, local
, dirty
);
2491 mlog(ML_ERROR
, "ocfs2 journal load failed! %d\n", status
);
2496 /* recover my local alloc if we didn't unmount cleanly. */
2497 status
= ocfs2_begin_local_alloc_recovery(osb
,
2504 /* we complete the recovery process after we've marked
2505 * ourselves as mounted. */
2508 mlog(0, "Journal loaded.\n");
2510 status
= ocfs2_load_local_alloc(osb
);
2517 /* Recovery will be completed after we've mounted the
2518 * rest of the volume. */
2520 osb
->local_alloc_copy
= local_alloc
;
2524 /* go through each journal, trylock it and if you get the
2525 * lock, and it's marked as dirty, set the bit in the recover
2526 * map and launch a recovery thread for it. */
2527 status
= ocfs2_mark_dead_nodes(osb
);
2533 status
= ocfs2_compute_replay_slots(osb
);
2546 * The routine gets called from dismount or close whenever a dismount on
2547 * volume is requested and the osb open count becomes 1.
2548 * It will remove the osb from the global list and also free up all the
2549 * initialized resources and fileobject.
2551 static void ocfs2_delete_osb(struct ocfs2_super
*osb
)
2555 /* This function assumes that the caller has the main osb resource */
2557 ocfs2_free_slot_info(osb
);
2559 kfree(osb
->osb_orphan_wipes
);
2560 kfree(osb
->slot_recovery_generations
);
2562 * This belongs in journal shutdown, but because we have to
2563 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2566 kfree(osb
->journal
);
2567 if (osb
->local_alloc_copy
)
2568 kfree(osb
->local_alloc_copy
);
2569 kfree(osb
->uuid_str
);
2570 ocfs2_put_dlm_debug(osb
->osb_dlm_debug
);
2571 memset(osb
, 0, sizeof(struct ocfs2_super
));
2576 /* Put OCFS2 into a readonly state, or (if the user specifies it),
2577 * panic(). We do not support continue-on-error operation. */
2578 static void ocfs2_handle_error(struct super_block
*sb
)
2580 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
2582 if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_PANIC
)
2583 panic("OCFS2: (device %s): panic forced after error\n",
2586 ocfs2_set_osb_flag(osb
, OCFS2_OSB_ERROR_FS
);
2588 if (sb
->s_flags
& MS_RDONLY
&&
2589 (ocfs2_is_soft_readonly(osb
) ||
2590 ocfs2_is_hard_readonly(osb
)))
2593 printk(KERN_CRIT
"File system is now read-only due to the potential "
2594 "of on-disk corruption. Please run fsck.ocfs2 once the file "
2595 "system is unmounted.\n");
2596 sb
->s_flags
|= MS_RDONLY
;
2597 ocfs2_set_ro_flag(osb
, 0);
2600 static char error_buf
[1024];
2602 void __ocfs2_error(struct super_block
*sb
,
2603 const char *function
,
2604 const char *fmt
, ...)
2608 va_start(args
, fmt
);
2609 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2612 /* Not using mlog here because we want to show the actual
2613 * function the error came from. */
2614 printk(KERN_CRIT
"OCFS2: ERROR (device %s): %s: %s\n",
2615 sb
->s_id
, function
, error_buf
);
2617 ocfs2_handle_error(sb
);
2620 /* Handle critical errors. This is intentionally more drastic than
2621 * ocfs2_handle_error, so we only use for things like journal errors,
2623 void __ocfs2_abort(struct super_block
* sb
,
2624 const char *function
,
2625 const char *fmt
, ...)
2629 va_start(args
, fmt
);
2630 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2633 printk(KERN_CRIT
"OCFS2: abort (device %s): %s: %s\n",
2634 sb
->s_id
, function
, error_buf
);
2636 /* We don't have the cluster support yet to go straight to
2637 * hard readonly in here. Until then, we want to keep
2638 * ocfs2_abort() so that we can at least mark critical
2641 * TODO: This should abort the journal and alert other nodes
2642 * that our slot needs recovery. */
2644 /* Force a panic(). This stinks, but it's better than letting
2645 * things continue without having a proper hard readonly
2647 if (!ocfs2_mount_local(OCFS2_SB(sb
)))
2648 OCFS2_SB(sb
)->s_mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
2649 ocfs2_handle_error(sb
);
2653 * Void signal blockers, because in-kernel sigprocmask() only fails
2654 * when SIG_* is wrong.
2656 void ocfs2_block_signals(sigset_t
*oldset
)
2661 sigfillset(&blocked
);
2662 rc
= sigprocmask(SIG_BLOCK
, &blocked
, oldset
);
2666 void ocfs2_unblock_signals(sigset_t
*oldset
)
2668 int rc
= sigprocmask(SIG_SETMASK
, oldset
, NULL
);
2672 module_init(ocfs2_init
);
2673 module_exit(ocfs2_exit
);