1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * load/unload driver, mount/dismount volumes
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
26 #include <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/slab.h>
30 #include <linux/highmem.h>
31 #include <linux/init.h>
32 #include <linux/random.h>
33 #include <linux/statfs.h>
34 #include <linux/moduleparam.h>
35 #include <linux/blkdev.h>
36 #include <linux/socket.h>
37 #include <linux/inet.h>
38 #include <linux/parser.h>
39 #include <linux/crc32.h>
40 #include <linux/debugfs.h>
41 #include <linux/mount.h>
42 #include <linux/seq_file.h>
43 #include <linux/quotaops.h>
44 #include <linux/cleancache.h>
46 #define CREATE_TRACE_POINTS
47 #include "ocfs2_trace.h"
49 #include <cluster/masklog.h>
53 /* this should be the only file to include a version 1 header */
54 #include "ocfs1_fs_compat.h"
58 #include "blockcheck.h"
61 #include "extent_map.h"
62 #include "heartbeat.h"
65 #include "localalloc.h"
74 #include "refcounttree.h"
77 #include "buffer_head_io.h"
79 static struct kmem_cache
*ocfs2_inode_cachep
= NULL
;
80 struct kmem_cache
*ocfs2_dquot_cachep
;
81 struct kmem_cache
*ocfs2_qf_chunk_cachep
;
83 /* OCFS2 needs to schedule several different types of work which
84 * require cluster locking, disk I/O, recovery waits, etc. Since these
85 * types of work tend to be heavy we avoid using the kernel events
86 * workqueue and schedule on our own. */
87 struct workqueue_struct
*ocfs2_wq
= NULL
;
89 static struct dentry
*ocfs2_debugfs_root
= NULL
;
91 MODULE_AUTHOR("Oracle");
92 MODULE_LICENSE("GPL");
96 unsigned long commit_interval
;
97 unsigned long mount_opt
;
98 unsigned int atime_quantum
;
101 unsigned int resv_level
;
103 char cluster_stack
[OCFS2_STACK_LABEL_LEN
+ 1];
106 static int ocfs2_parse_options(struct super_block
*sb
, char *options
,
107 struct mount_options
*mopt
,
109 static int ocfs2_check_set_options(struct super_block
*sb
,
110 struct mount_options
*options
);
111 static int ocfs2_show_options(struct seq_file
*s
, struct dentry
*root
);
112 static void ocfs2_put_super(struct super_block
*sb
);
113 static int ocfs2_mount_volume(struct super_block
*sb
);
114 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
);
115 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
);
116 static int ocfs2_initialize_mem_caches(void);
117 static void ocfs2_free_mem_caches(void);
118 static void ocfs2_delete_osb(struct ocfs2_super
*osb
);
120 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
);
122 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
);
124 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
);
125 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
);
126 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
);
127 static int ocfs2_check_volume(struct ocfs2_super
*osb
);
128 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
129 struct buffer_head
*bh
,
131 struct ocfs2_blockcheck_stats
*stats
);
132 static int ocfs2_initialize_super(struct super_block
*sb
,
133 struct buffer_head
*bh
,
135 struct ocfs2_blockcheck_stats
*stats
);
136 static int ocfs2_get_sector(struct super_block
*sb
,
137 struct buffer_head
**bh
,
140 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
);
141 static void ocfs2_destroy_inode(struct inode
*inode
);
142 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
);
143 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
);
144 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
);
146 static const struct super_operations ocfs2_sops
= {
147 .statfs
= ocfs2_statfs
,
148 .alloc_inode
= ocfs2_alloc_inode
,
149 .destroy_inode
= ocfs2_destroy_inode
,
150 .drop_inode
= ocfs2_drop_inode
,
151 .evict_inode
= ocfs2_evict_inode
,
152 .sync_fs
= ocfs2_sync_fs
,
153 .put_super
= ocfs2_put_super
,
154 .remount_fs
= ocfs2_remount
,
155 .show_options
= ocfs2_show_options
,
156 .quota_read
= ocfs2_quota_read
,
157 .quota_write
= ocfs2_quota_write
,
184 Opt_coherency_buffered
,
191 static const match_table_t tokens
= {
192 {Opt_barrier
, "barrier=%u"},
193 {Opt_err_panic
, "errors=panic"},
194 {Opt_err_ro
, "errors=remount-ro"},
196 {Opt_nointr
, "nointr"},
197 {Opt_hb_none
, OCFS2_HB_NONE
},
198 {Opt_hb_local
, OCFS2_HB_LOCAL
},
199 {Opt_hb_global
, OCFS2_HB_GLOBAL
},
200 {Opt_data_ordered
, "data=ordered"},
201 {Opt_data_writeback
, "data=writeback"},
202 {Opt_atime_quantum
, "atime_quantum=%u"},
203 {Opt_slot
, "preferred_slot=%u"},
204 {Opt_commit
, "commit=%u"},
205 {Opt_localalloc
, "localalloc=%d"},
206 {Opt_localflocks
, "localflocks"},
207 {Opt_stack
, "cluster_stack=%s"},
208 {Opt_user_xattr
, "user_xattr"},
209 {Opt_nouser_xattr
, "nouser_xattr"},
210 {Opt_inode64
, "inode64"},
212 {Opt_noacl
, "noacl"},
213 {Opt_usrquota
, "usrquota"},
214 {Opt_grpquota
, "grpquota"},
215 {Opt_coherency_buffered
, "coherency=buffered"},
216 {Opt_coherency_full
, "coherency=full"},
217 {Opt_resv_level
, "resv_level=%u"},
218 {Opt_dir_resv_level
, "dir_resv_level=%u"},
222 #ifdef CONFIG_DEBUG_FS
223 static int ocfs2_osb_dump(struct ocfs2_super
*osb
, char *buf
, int len
)
225 struct ocfs2_cluster_connection
*cconn
= osb
->cconn
;
226 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
227 struct ocfs2_orphan_scan
*os
= &osb
->osb_orphan_scan
;
230 out
+= snprintf(buf
+ out
, len
- out
,
231 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
232 "Device", osb
->dev_str
, osb
->uuid_str
,
233 osb
->fs_generation
, osb
->vol_label
);
235 out
+= snprintf(buf
+ out
, len
- out
,
236 "%10s => State: %d Flags: 0x%lX\n", "Volume",
237 atomic_read(&osb
->vol_state
), osb
->osb_flags
);
239 out
+= snprintf(buf
+ out
, len
- out
,
240 "%10s => Block: %lu Cluster: %d\n", "Sizes",
241 osb
->sb
->s_blocksize
, osb
->s_clustersize
);
243 out
+= snprintf(buf
+ out
, len
- out
,
244 "%10s => Compat: 0x%X Incompat: 0x%X "
246 "Features", osb
->s_feature_compat
,
247 osb
->s_feature_incompat
, osb
->s_feature_ro_compat
);
249 out
+= snprintf(buf
+ out
, len
- out
,
250 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
251 osb
->s_mount_opt
, osb
->s_atime_quantum
);
254 out
+= snprintf(buf
+ out
, len
- out
,
255 "%10s => Stack: %s Name: %*s "
256 "Version: %d.%d\n", "Cluster",
257 (*osb
->osb_cluster_stack
== '\0' ?
258 "o2cb" : osb
->osb_cluster_stack
),
259 cconn
->cc_namelen
, cconn
->cc_name
,
260 cconn
->cc_version
.pv_major
,
261 cconn
->cc_version
.pv_minor
);
264 spin_lock(&osb
->dc_task_lock
);
265 out
+= snprintf(buf
+ out
, len
- out
,
266 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
267 "WorkSeq: %lu\n", "DownCnvt",
268 (osb
->dc_task
? task_pid_nr(osb
->dc_task
) : -1),
269 osb
->blocked_lock_count
, osb
->dc_wake_sequence
,
270 osb
->dc_work_sequence
);
271 spin_unlock(&osb
->dc_task_lock
);
273 spin_lock(&osb
->osb_lock
);
274 out
+= snprintf(buf
+ out
, len
- out
, "%10s => Pid: %d Nodes:",
276 (osb
->recovery_thread_task
?
277 task_pid_nr(osb
->recovery_thread_task
) : -1));
278 if (rm
->rm_used
== 0)
279 out
+= snprintf(buf
+ out
, len
- out
, " None\n");
281 for (i
= 0; i
< rm
->rm_used
; i
++)
282 out
+= snprintf(buf
+ out
, len
- out
, " %d",
284 out
+= snprintf(buf
+ out
, len
- out
, "\n");
286 spin_unlock(&osb
->osb_lock
);
288 out
+= snprintf(buf
+ out
, len
- out
,
289 "%10s => Pid: %d Interval: %lu\n", "Commit",
290 (osb
->commit_task
? task_pid_nr(osb
->commit_task
) : -1),
291 osb
->osb_commit_interval
);
293 out
+= snprintf(buf
+ out
, len
- out
,
294 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
295 "Journal", osb
->journal
->j_state
,
296 osb
->journal
->j_trans_id
,
297 atomic_read(&osb
->journal
->j_num_trans
));
299 out
+= snprintf(buf
+ out
, len
- out
,
300 "%10s => GlobalAllocs: %d LocalAllocs: %d "
301 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
303 atomic_read(&osb
->alloc_stats
.bitmap_data
),
304 atomic_read(&osb
->alloc_stats
.local_data
),
305 atomic_read(&osb
->alloc_stats
.bg_allocs
),
306 atomic_read(&osb
->alloc_stats
.moves
),
307 atomic_read(&osb
->alloc_stats
.bg_extends
));
309 out
+= snprintf(buf
+ out
, len
- out
,
310 "%10s => State: %u Descriptor: %llu Size: %u bits "
311 "Default: %u bits\n",
312 "LocalAlloc", osb
->local_alloc_state
,
313 (unsigned long long)osb
->la_last_gd
,
314 osb
->local_alloc_bits
, osb
->local_alloc_default_bits
);
316 spin_lock(&osb
->osb_lock
);
317 out
+= snprintf(buf
+ out
, len
- out
,
318 "%10s => InodeSlot: %d StolenInodes: %d, "
319 "MetaSlot: %d StolenMeta: %d\n", "Steal",
320 osb
->s_inode_steal_slot
,
321 atomic_read(&osb
->s_num_inodes_stolen
),
322 osb
->s_meta_steal_slot
,
323 atomic_read(&osb
->s_num_meta_stolen
));
324 spin_unlock(&osb
->osb_lock
);
326 out
+= snprintf(buf
+ out
, len
- out
, "OrphanScan => ");
327 out
+= snprintf(buf
+ out
, len
- out
, "Local: %u Global: %u ",
328 os
->os_count
, os
->os_seqno
);
329 out
+= snprintf(buf
+ out
, len
- out
, " Last Scan: ");
330 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_INACTIVE
)
331 out
+= snprintf(buf
+ out
, len
- out
, "Disabled\n");
333 out
+= snprintf(buf
+ out
, len
- out
, "%lu seconds ago\n",
334 (get_seconds() - os
->os_scantime
.tv_sec
));
336 out
+= snprintf(buf
+ out
, len
- out
, "%10s => %3s %10s\n",
337 "Slots", "Num", "RecoGen");
338 for (i
= 0; i
< osb
->max_slots
; ++i
) {
339 out
+= snprintf(buf
+ out
, len
- out
,
340 "%10s %c %3d %10d\n",
342 (i
== osb
->slot_num
? '*' : ' '),
343 i
, osb
->slot_recovery_generations
[i
]);
349 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
351 struct ocfs2_super
*osb
= inode
->i_private
;
354 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
358 i_size_write(inode
, ocfs2_osb_dump(osb
, buf
, PAGE_SIZE
));
360 file
->private_data
= buf
;
367 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
369 kfree(file
->private_data
);
373 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
374 size_t nbytes
, loff_t
*ppos
)
376 return simple_read_from_buffer(buf
, nbytes
, ppos
, file
->private_data
,
377 i_size_read(file
->f_mapping
->host
));
380 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
384 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
388 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
389 size_t nbytes
, loff_t
*ppos
)
393 #endif /* CONFIG_DEBUG_FS */
395 static const struct file_operations ocfs2_osb_debug_fops
= {
396 .open
= ocfs2_osb_debug_open
,
397 .release
= ocfs2_debug_release
,
398 .read
= ocfs2_debug_read
,
399 .llseek
= generic_file_llseek
,
402 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
)
406 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
408 if (ocfs2_is_hard_readonly(osb
))
412 status
= ocfs2_flush_truncate_log(osb
);
416 ocfs2_schedule_truncate_log_flush(osb
, 0);
419 if (jbd2_journal_start_commit(OCFS2_SB(sb
)->journal
->j_journal
,
422 jbd2_log_wait_commit(OCFS2_SB(sb
)->journal
->j_journal
,
428 static int ocfs2_need_system_inode(struct ocfs2_super
*osb
, int ino
)
430 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)
431 && (ino
== USER_QUOTA_SYSTEM_INODE
432 || ino
== LOCAL_USER_QUOTA_SYSTEM_INODE
))
434 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)
435 && (ino
== GROUP_QUOTA_SYSTEM_INODE
436 || ino
== LOCAL_GROUP_QUOTA_SYSTEM_INODE
))
441 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
)
443 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
487 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
)
489 struct inode
*new = NULL
;
493 for (i
= OCFS2_LAST_GLOBAL_SYSTEM_INODE
+ 1;
494 i
< NUM_SYSTEM_INODES
;
496 if (!ocfs2_need_system_inode(osb
, i
))
498 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
500 ocfs2_release_system_inodes(osb
);
502 mlog(ML_ERROR
, "status=%d, sysfile=%d, slot=%d\n",
503 status
, i
, osb
->slot_num
);
506 /* the array now has one ref, so drop this one */
516 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
)
521 for (i
= 0; i
< NUM_GLOBAL_SYSTEM_INODES
; i
++) {
522 inode
= osb
->global_system_inodes
[i
];
525 osb
->global_system_inodes
[i
] = NULL
;
529 inode
= osb
->sys_root_inode
;
532 osb
->sys_root_inode
= NULL
;
535 inode
= osb
->root_inode
;
538 osb
->root_inode
= NULL
;
541 if (!osb
->local_system_inodes
)
544 for (i
= 0; i
< NUM_LOCAL_SYSTEM_INODES
* osb
->max_slots
; i
++) {
545 if (osb
->local_system_inodes
[i
]) {
546 iput(osb
->local_system_inodes
[i
]);
547 osb
->local_system_inodes
[i
] = NULL
;
551 kfree(osb
->local_system_inodes
);
552 osb
->local_system_inodes
= NULL
;
555 /* We're allocating fs objects, use GFP_NOFS */
556 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
)
558 struct ocfs2_inode_info
*oi
;
560 oi
= kmem_cache_alloc(ocfs2_inode_cachep
, GFP_NOFS
);
564 jbd2_journal_init_jbd_inode(&oi
->ip_jinode
, &oi
->vfs_inode
);
565 return &oi
->vfs_inode
;
568 static void ocfs2_i_callback(struct rcu_head
*head
)
570 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
571 kmem_cache_free(ocfs2_inode_cachep
, OCFS2_I(inode
));
574 static void ocfs2_destroy_inode(struct inode
*inode
)
576 call_rcu(&inode
->i_rcu
, ocfs2_i_callback
);
579 static unsigned long long ocfs2_max_file_offset(unsigned int bbits
,
582 unsigned int bytes
= 1 << cbits
;
583 unsigned int trim
= bytes
;
584 unsigned int bitshift
= 32;
587 * i_size and all block offsets in ocfs2 are always 64 bits
588 * wide. i_clusters is 32 bits, in cluster-sized units. So on
589 * 64 bit platforms, cluster size will be the limiting factor.
592 #if BITS_PER_LONG == 32
593 # if defined(CONFIG_LBDAF)
594 BUILD_BUG_ON(sizeof(sector_t
) != 8);
596 * We might be limited by page cache size.
598 if (bytes
> PAGE_CACHE_SIZE
) {
599 bytes
= PAGE_CACHE_SIZE
;
602 * Shift by 31 here so that we don't get larger than
609 * We are limited by the size of sector_t. Use block size, as
610 * that's what we expose to the VFS.
619 * Trim by a whole cluster when we can actually approach the
620 * on-disk limits. Otherwise we can overflow i_clusters when
621 * an extent start is at the max offset.
623 return (((unsigned long long)bytes
) << bitshift
) - trim
;
626 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
)
628 int incompat_features
;
630 struct mount_options parsed_options
;
631 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
634 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 1) ||
635 !ocfs2_check_set_options(sb
, &parsed_options
)) {
640 tmp
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
|
642 if ((osb
->s_mount_opt
& tmp
) != (parsed_options
.mount_opt
& tmp
)) {
644 mlog(ML_ERROR
, "Cannot change heartbeat mode on remount\n");
648 if ((osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
) !=
649 (parsed_options
.mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
)) {
651 mlog(ML_ERROR
, "Cannot change data mode on remount\n");
655 /* Probably don't want this on remount; it might
656 * mess with other nodes */
657 if (!(osb
->s_mount_opt
& OCFS2_MOUNT_INODE64
) &&
658 (parsed_options
.mount_opt
& OCFS2_MOUNT_INODE64
)) {
660 mlog(ML_ERROR
, "Cannot enable inode64 on remount\n");
664 /* We're going to/from readonly mode. */
665 if ((*flags
& MS_RDONLY
) != (sb
->s_flags
& MS_RDONLY
)) {
666 /* Disable quota accounting before remounting RO */
667 if (*flags
& MS_RDONLY
) {
668 ret
= ocfs2_susp_quotas(osb
, 0);
672 /* Lock here so the check of HARD_RO and the potential
673 * setting of SOFT_RO is atomic. */
674 spin_lock(&osb
->osb_lock
);
675 if (osb
->osb_flags
& OCFS2_OSB_HARD_RO
) {
676 mlog(ML_ERROR
, "Remount on readonly device is forbidden.\n");
681 if (*flags
& MS_RDONLY
) {
682 sb
->s_flags
|= MS_RDONLY
;
683 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
685 if (osb
->osb_flags
& OCFS2_OSB_ERROR_FS
) {
686 mlog(ML_ERROR
, "Cannot remount RDWR "
687 "filesystem due to previous errors.\n");
691 incompat_features
= OCFS2_HAS_RO_COMPAT_FEATURE(sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
);
692 if (incompat_features
) {
693 mlog(ML_ERROR
, "Cannot remount RDWR because "
694 "of unsupported optional features "
695 "(%x).\n", incompat_features
);
699 sb
->s_flags
&= ~MS_RDONLY
;
700 osb
->osb_flags
&= ~OCFS2_OSB_SOFT_RO
;
702 trace_ocfs2_remount(sb
->s_flags
, osb
->osb_flags
, *flags
);
704 spin_unlock(&osb
->osb_lock
);
705 /* Enable quota accounting after remounting RW */
706 if (!ret
&& !(*flags
& MS_RDONLY
)) {
707 if (sb_any_quota_suspended(sb
))
708 ret
= ocfs2_susp_quotas(osb
, 1);
710 ret
= ocfs2_enable_quotas(osb
);
712 /* Return back changes... */
713 spin_lock(&osb
->osb_lock
);
714 sb
->s_flags
|= MS_RDONLY
;
715 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
716 spin_unlock(&osb
->osb_lock
);
723 /* Only save off the new mount options in case of a successful
725 osb
->s_mount_opt
= parsed_options
.mount_opt
;
726 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
727 osb
->preferred_slot
= parsed_options
.slot
;
728 if (parsed_options
.commit_interval
)
729 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
731 if (!ocfs2_is_hard_readonly(osb
))
732 ocfs2_set_journal_params(osb
);
734 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
735 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ?
742 static int ocfs2_sb_probe(struct super_block
*sb
,
743 struct buffer_head
**bh
,
745 struct ocfs2_blockcheck_stats
*stats
)
748 struct ocfs1_vol_disk_hdr
*hdr
;
749 struct ocfs2_dinode
*di
;
755 *sector_size
= bdev_logical_block_size(sb
->s_bdev
);
756 if (*sector_size
> OCFS2_MAX_BLOCKSIZE
) {
757 mlog(ML_ERROR
, "Hardware sector size too large: %d (max=%d)\n",
758 *sector_size
, OCFS2_MAX_BLOCKSIZE
);
763 /* Can this really happen? */
764 if (*sector_size
< OCFS2_MIN_BLOCKSIZE
)
765 *sector_size
= OCFS2_MIN_BLOCKSIZE
;
767 /* check block zero for old format */
768 status
= ocfs2_get_sector(sb
, bh
, 0, *sector_size
);
773 hdr
= (struct ocfs1_vol_disk_hdr
*) (*bh
)->b_data
;
774 if (hdr
->major_version
== OCFS1_MAJOR_VERSION
) {
775 mlog(ML_ERROR
, "incompatible version: %u.%u\n",
776 hdr
->major_version
, hdr
->minor_version
);
779 if (memcmp(hdr
->signature
, OCFS1_VOLUME_SIGNATURE
,
780 strlen(OCFS1_VOLUME_SIGNATURE
)) == 0) {
781 mlog(ML_ERROR
, "incompatible volume signature: %8s\n",
788 mlog(ML_ERROR
, "This is an ocfs v1 filesystem which must be "
789 "upgraded before mounting with ocfs v2\n");
794 * Now check at magic offset for 512, 1024, 2048, 4096
795 * blocksizes. 4096 is the maximum blocksize because it is
796 * the minimum clustersize.
799 for (blksize
= *sector_size
;
800 blksize
<= OCFS2_MAX_BLOCKSIZE
;
802 tmpstat
= ocfs2_get_sector(sb
, bh
,
803 OCFS2_SUPER_BLOCK_BLKNO
,
810 di
= (struct ocfs2_dinode
*) (*bh
)->b_data
;
811 memset(stats
, 0, sizeof(struct ocfs2_blockcheck_stats
));
812 spin_lock_init(&stats
->b_lock
);
813 tmpstat
= ocfs2_verify_volume(di
, *bh
, blksize
, stats
);
818 if (tmpstat
!= -EAGAIN
) {
828 static int ocfs2_verify_heartbeat(struct ocfs2_super
*osb
)
830 u32 hb_enabled
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
;
832 if (osb
->s_mount_opt
& hb_enabled
) {
833 if (ocfs2_mount_local(osb
)) {
834 mlog(ML_ERROR
, "Cannot heartbeat on a locally "
835 "mounted device.\n");
838 if (ocfs2_userspace_stack(osb
)) {
839 mlog(ML_ERROR
, "Userspace stack expected, but "
840 "o2cb heartbeat arguments passed to mount\n");
843 if (((osb
->s_mount_opt
& OCFS2_MOUNT_HB_GLOBAL
) &&
844 !ocfs2_cluster_o2cb_global_heartbeat(osb
)) ||
845 ((osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) &&
846 ocfs2_cluster_o2cb_global_heartbeat(osb
))) {
847 mlog(ML_ERROR
, "Mismatching o2cb heartbeat modes\n");
852 if (!(osb
->s_mount_opt
& hb_enabled
)) {
853 if (!ocfs2_mount_local(osb
) && !ocfs2_is_hard_readonly(osb
) &&
854 !ocfs2_userspace_stack(osb
)) {
855 mlog(ML_ERROR
, "Heartbeat has to be started to mount "
856 "a read-write clustered device.\n");
865 * If we're using a userspace stack, mount should have passed
866 * a name that matches the disk. If not, mount should not
867 * have passed a stack.
869 static int ocfs2_verify_userspace_stack(struct ocfs2_super
*osb
,
870 struct mount_options
*mopt
)
872 if (!ocfs2_userspace_stack(osb
) && mopt
->cluster_stack
[0]) {
874 "cluster stack passed to mount, but this filesystem "
875 "does not support it\n");
879 if (ocfs2_userspace_stack(osb
) &&
880 strncmp(osb
->osb_cluster_stack
, mopt
->cluster_stack
,
881 OCFS2_STACK_LABEL_LEN
)) {
883 "cluster stack passed to mount (\"%s\") does not "
884 "match the filesystem (\"%s\")\n",
886 osb
->osb_cluster_stack
);
893 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
)
896 struct super_block
*sb
= osb
->sb
;
897 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
898 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
901 for (type
= 0; type
< MAXQUOTAS
; type
++) {
902 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
905 status
= dquot_resume(sb
, type
);
907 struct ocfs2_mem_dqinfo
*oinfo
;
909 /* Cancel periodic syncing before suspending */
910 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
911 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
912 status
= dquot_suspend(sb
, type
);
918 mlog(ML_ERROR
, "Failed to suspend/unsuspend quotas on "
919 "remount (error = %d).\n", status
);
923 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
)
925 struct inode
*inode
[MAXQUOTAS
] = { NULL
, NULL
};
926 struct super_block
*sb
= osb
->sb
;
927 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
928 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
929 unsigned int ino
[MAXQUOTAS
] = { LOCAL_USER_QUOTA_SYSTEM_INODE
,
930 LOCAL_GROUP_QUOTA_SYSTEM_INODE
};
934 sb_dqopt(sb
)->flags
|= DQUOT_QUOTA_SYS_FILE
| DQUOT_NEGATIVE_USAGE
;
935 for (type
= 0; type
< MAXQUOTAS
; type
++) {
936 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
938 inode
[type
] = ocfs2_get_system_file_inode(osb
, ino
[type
],
944 status
= dquot_enable(inode
[type
], type
, QFMT_OCFS2
,
945 DQUOT_USAGE_ENABLED
);
950 for (type
= 0; type
< MAXQUOTAS
; type
++)
954 ocfs2_disable_quotas(osb
);
955 for (type
= 0; type
< MAXQUOTAS
; type
++)
961 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
)
965 struct super_block
*sb
= osb
->sb
;
966 struct ocfs2_mem_dqinfo
*oinfo
;
968 /* We mostly ignore errors in this function because there's not much
969 * we can do when we see them */
970 for (type
= 0; type
< MAXQUOTAS
; type
++) {
971 if (!sb_has_quota_loaded(sb
, type
))
973 /* Cancel periodic syncing before we grab dqonoff_mutex */
974 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
975 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
976 inode
= igrab(sb
->s_dquot
.files
[type
]);
977 /* Turn off quotas. This will remove all dquot structures from
978 * memory and so they will be automatically synced to global
980 dquot_disable(sb
, type
, DQUOT_USAGE_ENABLED
|
981 DQUOT_LIMITS_ENABLED
);
988 /* Handle quota on quotactl */
989 static int ocfs2_quota_on(struct super_block
*sb
, int type
, int format_id
)
991 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
992 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
994 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
997 return dquot_enable(sb_dqopt(sb
)->files
[type
], type
,
998 format_id
, DQUOT_LIMITS_ENABLED
);
1001 /* Handle quota off quotactl */
1002 static int ocfs2_quota_off(struct super_block
*sb
, int type
)
1004 return dquot_disable(sb
, type
, DQUOT_LIMITS_ENABLED
);
1007 static const struct quotactl_ops ocfs2_quotactl_ops
= {
1008 .quota_on_meta
= ocfs2_quota_on
,
1009 .quota_off
= ocfs2_quota_off
,
1010 .quota_sync
= dquot_quota_sync
,
1011 .get_info
= dquot_get_dqinfo
,
1012 .set_info
= dquot_set_dqinfo
,
1013 .get_dqblk
= dquot_get_dqblk
,
1014 .set_dqblk
= dquot_set_dqblk
,
1017 static int ocfs2_fill_super(struct super_block
*sb
, void *data
, int silent
)
1019 struct dentry
*root
;
1020 int status
, sector_size
;
1021 struct mount_options parsed_options
;
1022 struct inode
*inode
= NULL
;
1023 struct ocfs2_super
*osb
= NULL
;
1024 struct buffer_head
*bh
= NULL
;
1026 struct ocfs2_blockcheck_stats stats
;
1028 trace_ocfs2_fill_super(sb
, data
, silent
);
1030 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 0)) {
1032 goto read_super_error
;
1035 /* probe for superblock */
1036 status
= ocfs2_sb_probe(sb
, &bh
, §or_size
, &stats
);
1038 mlog(ML_ERROR
, "superblock probe failed!\n");
1039 goto read_super_error
;
1042 status
= ocfs2_initialize_super(sb
, bh
, sector_size
, &stats
);
1046 goto read_super_error
;
1051 if (!ocfs2_check_set_options(sb
, &parsed_options
)) {
1053 goto read_super_error
;
1055 osb
->s_mount_opt
= parsed_options
.mount_opt
;
1056 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
1057 osb
->preferred_slot
= parsed_options
.slot
;
1058 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
1060 ocfs2_la_set_sizes(osb
, parsed_options
.localalloc_opt
);
1061 osb
->osb_resv_level
= parsed_options
.resv_level
;
1062 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1063 if (parsed_options
.dir_resv_level
== -1)
1064 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1066 osb
->osb_dir_resv_level
= parsed_options
.dir_resv_level
;
1068 status
= ocfs2_verify_userspace_stack(osb
, &parsed_options
);
1070 goto read_super_error
;
1072 sb
->s_magic
= OCFS2_SUPER_MAGIC
;
1074 sb
->s_flags
= (sb
->s_flags
& ~(MS_POSIXACL
| MS_NOSEC
)) |
1075 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ? MS_POSIXACL
: 0);
1077 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1079 if (bdev_read_only(sb
->s_bdev
)) {
1080 if (!(sb
->s_flags
& MS_RDONLY
)) {
1082 mlog(ML_ERROR
, "Readonly device detected but readonly "
1083 "mount was not specified.\n");
1084 goto read_super_error
;
1087 /* You should not be able to start a local heartbeat
1088 * on a readonly device. */
1089 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
1091 mlog(ML_ERROR
, "Local heartbeat specified on readonly "
1093 goto read_super_error
;
1096 status
= ocfs2_check_journals_nolocks(osb
);
1098 if (status
== -EROFS
)
1099 mlog(ML_ERROR
, "Recovery required on readonly "
1100 "file system, but write access is "
1104 goto read_super_error
;
1107 ocfs2_set_ro_flag(osb
, 1);
1109 printk(KERN_NOTICE
"ocfs2: Readonly device (%s) detected. "
1110 "Cluster services will not be used for this mount. "
1111 "Recovery will be skipped.\n", osb
->dev_str
);
1114 if (!ocfs2_is_hard_readonly(osb
)) {
1115 if (sb
->s_flags
& MS_RDONLY
)
1116 ocfs2_set_ro_flag(osb
, 0);
1119 status
= ocfs2_verify_heartbeat(osb
);
1122 goto read_super_error
;
1125 osb
->osb_debug_root
= debugfs_create_dir(osb
->uuid_str
,
1126 ocfs2_debugfs_root
);
1127 if (!osb
->osb_debug_root
) {
1129 mlog(ML_ERROR
, "Unable to create per-mount debugfs root.\n");
1130 goto read_super_error
;
1133 osb
->osb_ctxt
= debugfs_create_file("fs_state", S_IFREG
|S_IRUSR
,
1134 osb
->osb_debug_root
,
1136 &ocfs2_osb_debug_fops
);
1137 if (!osb
->osb_ctxt
) {
1140 goto read_super_error
;
1143 if (ocfs2_meta_ecc(osb
)) {
1144 status
= ocfs2_blockcheck_stats_debugfs_install(
1145 &osb
->osb_ecc_stats
,
1146 osb
->osb_debug_root
);
1149 "Unable to create blockcheck statistics "
1151 goto read_super_error
;
1155 status
= ocfs2_mount_volume(sb
);
1157 goto read_super_error
;
1159 if (osb
->root_inode
)
1160 inode
= igrab(osb
->root_inode
);
1165 goto read_super_error
;
1168 root
= d_make_root(inode
);
1172 goto read_super_error
;
1177 ocfs2_complete_mount_recovery(osb
);
1179 if (ocfs2_mount_local(osb
))
1180 snprintf(nodestr
, sizeof(nodestr
), "local");
1182 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1184 printk(KERN_INFO
"ocfs2: Mounting device (%s) on (node %s, slot %d) "
1185 "with %s data mode.\n",
1186 osb
->dev_str
, nodestr
, osb
->slot_num
,
1187 osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
? "writeback" :
1190 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED
);
1191 wake_up(&osb
->osb_mount_event
);
1193 /* Now we can initialize quotas because we can afford to wait
1194 * for cluster locks recovery now. That also means that truncation
1195 * log recovery can happen but that waits for proper quota setup */
1196 if (!(sb
->s_flags
& MS_RDONLY
)) {
1197 status
= ocfs2_enable_quotas(osb
);
1199 /* We have to err-out specially here because
1200 * s_root is already set */
1202 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1203 wake_up(&osb
->osb_mount_event
);
1208 ocfs2_complete_quota_recovery(osb
);
1210 /* Now we wake up again for processes waiting for quotas */
1211 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED_QUOTAS
);
1212 wake_up(&osb
->osb_mount_event
);
1214 /* Start this when the mount is almost sure of being successful */
1215 ocfs2_orphan_scan_start(osb
);
1223 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1224 wake_up(&osb
->osb_mount_event
);
1225 ocfs2_dismount_volume(sb
, 1);
1233 static struct dentry
*ocfs2_mount(struct file_system_type
*fs_type
,
1235 const char *dev_name
,
1238 return mount_bdev(fs_type
, flags
, dev_name
, data
, ocfs2_fill_super
);
1241 static void ocfs2_kill_sb(struct super_block
*sb
)
1243 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1246 if (!osb
|| atomic_read(&osb
->vol_state
) == VOLUME_DISABLED
)
1249 /* Prevent further queueing of inode drop events */
1250 spin_lock(&dentry_list_lock
);
1251 ocfs2_set_osb_flag(osb
, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED
);
1252 spin_unlock(&dentry_list_lock
);
1253 /* Wait for work to finish and/or remove it */
1254 cancel_work_sync(&osb
->dentry_lock_work
);
1256 kill_block_super(sb
);
1259 static struct file_system_type ocfs2_fs_type
= {
1260 .owner
= THIS_MODULE
,
1262 .mount
= ocfs2_mount
,
1263 .kill_sb
= ocfs2_kill_sb
,
1265 .fs_flags
= FS_REQUIRES_DEV
|FS_RENAME_DOES_D_MOVE
,
1268 MODULE_ALIAS_FS("ocfs2");
1270 static int ocfs2_check_set_options(struct super_block
*sb
,
1271 struct mount_options
*options
)
1273 if (options
->mount_opt
& OCFS2_MOUNT_USRQUOTA
&&
1274 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1275 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)) {
1276 mlog(ML_ERROR
, "User quotas were requested, but this "
1277 "filesystem does not have the feature enabled.\n");
1280 if (options
->mount_opt
& OCFS2_MOUNT_GRPQUOTA
&&
1281 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1282 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)) {
1283 mlog(ML_ERROR
, "Group quotas were requested, but this "
1284 "filesystem does not have the feature enabled.\n");
1287 if (options
->mount_opt
& OCFS2_MOUNT_POSIX_ACL
&&
1288 !OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
)) {
1289 mlog(ML_ERROR
, "ACL support requested but extended attributes "
1290 "feature is not enabled\n");
1293 /* No ACL setting specified? Use XATTR feature... */
1294 if (!(options
->mount_opt
& (OCFS2_MOUNT_POSIX_ACL
|
1295 OCFS2_MOUNT_NO_POSIX_ACL
))) {
1296 if (OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
))
1297 options
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1299 options
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1304 static int ocfs2_parse_options(struct super_block
*sb
,
1306 struct mount_options
*mopt
,
1309 int status
, user_stack
= 0;
1313 trace_ocfs2_parse_options(is_remount
, options
? options
: "(none)");
1315 mopt
->commit_interval
= 0;
1316 mopt
->mount_opt
= OCFS2_MOUNT_NOINTR
;
1317 mopt
->atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
1318 mopt
->slot
= OCFS2_INVALID_SLOT
;
1319 mopt
->localalloc_opt
= -1;
1320 mopt
->cluster_stack
[0] = '\0';
1321 mopt
->resv_level
= OCFS2_DEFAULT_RESV_LEVEL
;
1322 mopt
->dir_resv_level
= -1;
1329 while ((p
= strsep(&options
, ",")) != NULL
) {
1331 substring_t args
[MAX_OPT_ARGS
];
1336 token
= match_token(p
, tokens
, args
);
1339 mopt
->mount_opt
|= OCFS2_MOUNT_HB_LOCAL
;
1342 mopt
->mount_opt
|= OCFS2_MOUNT_HB_NONE
;
1345 mopt
->mount_opt
|= OCFS2_MOUNT_HB_GLOBAL
;
1348 if (match_int(&args
[0], &option
)) {
1353 mopt
->mount_opt
|= OCFS2_MOUNT_BARRIER
;
1355 mopt
->mount_opt
&= ~OCFS2_MOUNT_BARRIER
;
1358 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOINTR
;
1361 mopt
->mount_opt
|= OCFS2_MOUNT_NOINTR
;
1364 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
1367 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1369 case Opt_data_ordered
:
1370 mopt
->mount_opt
&= ~OCFS2_MOUNT_DATA_WRITEBACK
;
1372 case Opt_data_writeback
:
1373 mopt
->mount_opt
|= OCFS2_MOUNT_DATA_WRITEBACK
;
1375 case Opt_user_xattr
:
1376 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOUSERXATTR
;
1378 case Opt_nouser_xattr
:
1379 mopt
->mount_opt
|= OCFS2_MOUNT_NOUSERXATTR
;
1381 case Opt_atime_quantum
:
1382 if (match_int(&args
[0], &option
)) {
1387 mopt
->atime_quantum
= option
;
1391 if (match_int(&args
[0], &option
)) {
1396 mopt
->slot
= (s16
)option
;
1400 if (match_int(&args
[0], &option
)) {
1407 option
= JBD2_DEFAULT_MAX_COMMIT_AGE
;
1408 mopt
->commit_interval
= HZ
* option
;
1410 case Opt_localalloc
:
1412 if (match_int(&args
[0], &option
)) {
1417 mopt
->localalloc_opt
= option
;
1419 case Opt_localflocks
:
1421 * Changing this during remount could race
1422 * flock() requests, or "unbalance" existing
1423 * ones (e.g., a lock is taken in one mode but
1424 * dropped in the other). If users care enough
1425 * to flip locking modes during remount, we
1426 * could add a "local" flag to individual
1427 * flock structures for proper tracking of
1431 mopt
->mount_opt
|= OCFS2_MOUNT_LOCALFLOCKS
;
1434 /* Check both that the option we were passed
1435 * is of the right length and that it is a proper
1436 * string of the right length.
1438 if (((args
[0].to
- args
[0].from
) !=
1439 OCFS2_STACK_LABEL_LEN
) ||
1440 (strnlen(args
[0].from
,
1441 OCFS2_STACK_LABEL_LEN
) !=
1442 OCFS2_STACK_LABEL_LEN
)) {
1444 "Invalid cluster_stack option\n");
1448 memcpy(mopt
->cluster_stack
, args
[0].from
,
1449 OCFS2_STACK_LABEL_LEN
);
1450 mopt
->cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
1452 * Open code the memcmp here as we don't have
1454 * ocfs2_userspace_stack().
1456 if (memcmp(mopt
->cluster_stack
,
1457 OCFS2_CLASSIC_CLUSTER_STACK
,
1458 OCFS2_STACK_LABEL_LEN
))
1462 mopt
->mount_opt
|= OCFS2_MOUNT_INODE64
;
1465 mopt
->mount_opt
|= OCFS2_MOUNT_USRQUOTA
;
1468 mopt
->mount_opt
|= OCFS2_MOUNT_GRPQUOTA
;
1470 case Opt_coherency_buffered
:
1471 mopt
->mount_opt
|= OCFS2_MOUNT_COHERENCY_BUFFERED
;
1473 case Opt_coherency_full
:
1474 mopt
->mount_opt
&= ~OCFS2_MOUNT_COHERENCY_BUFFERED
;
1477 mopt
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1478 mopt
->mount_opt
&= ~OCFS2_MOUNT_NO_POSIX_ACL
;
1481 mopt
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1482 mopt
->mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
1484 case Opt_resv_level
:
1487 if (match_int(&args
[0], &option
)) {
1491 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1492 option
< OCFS2_MAX_RESV_LEVEL
)
1493 mopt
->resv_level
= option
;
1495 case Opt_dir_resv_level
:
1498 if (match_int(&args
[0], &option
)) {
1502 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1503 option
< OCFS2_MAX_RESV_LEVEL
)
1504 mopt
->dir_resv_level
= option
;
1508 "Unrecognized mount option \"%s\" "
1509 "or missing value\n", p
);
1515 if (user_stack
== 0) {
1516 /* Ensure only one heartbeat mode */
1517 tmp
= mopt
->mount_opt
& (OCFS2_MOUNT_HB_LOCAL
|
1518 OCFS2_MOUNT_HB_GLOBAL
|
1519 OCFS2_MOUNT_HB_NONE
);
1520 if (hweight32(tmp
) != 1) {
1521 mlog(ML_ERROR
, "Invalid heartbeat mount options\n");
1533 static int ocfs2_show_options(struct seq_file
*s
, struct dentry
*root
)
1535 struct ocfs2_super
*osb
= OCFS2_SB(root
->d_sb
);
1536 unsigned long opts
= osb
->s_mount_opt
;
1537 unsigned int local_alloc_megs
;
1539 if (opts
& (OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
)) {
1540 seq_printf(s
, ",_netdev");
1541 if (opts
& OCFS2_MOUNT_HB_LOCAL
)
1542 seq_printf(s
, ",%s", OCFS2_HB_LOCAL
);
1544 seq_printf(s
, ",%s", OCFS2_HB_GLOBAL
);
1546 seq_printf(s
, ",%s", OCFS2_HB_NONE
);
1548 if (opts
& OCFS2_MOUNT_NOINTR
)
1549 seq_printf(s
, ",nointr");
1551 if (opts
& OCFS2_MOUNT_DATA_WRITEBACK
)
1552 seq_printf(s
, ",data=writeback");
1554 seq_printf(s
, ",data=ordered");
1556 if (opts
& OCFS2_MOUNT_BARRIER
)
1557 seq_printf(s
, ",barrier=1");
1559 if (opts
& OCFS2_MOUNT_ERRORS_PANIC
)
1560 seq_printf(s
, ",errors=panic");
1562 seq_printf(s
, ",errors=remount-ro");
1564 if (osb
->preferred_slot
!= OCFS2_INVALID_SLOT
)
1565 seq_printf(s
, ",preferred_slot=%d", osb
->preferred_slot
);
1567 seq_printf(s
, ",atime_quantum=%u", osb
->s_atime_quantum
);
1569 if (osb
->osb_commit_interval
)
1570 seq_printf(s
, ",commit=%u",
1571 (unsigned) (osb
->osb_commit_interval
/ HZ
));
1573 local_alloc_megs
= osb
->local_alloc_bits
>> (20 - osb
->s_clustersize_bits
);
1574 if (local_alloc_megs
!= ocfs2_la_default_mb(osb
))
1575 seq_printf(s
, ",localalloc=%d", local_alloc_megs
);
1577 if (opts
& OCFS2_MOUNT_LOCALFLOCKS
)
1578 seq_printf(s
, ",localflocks,");
1580 if (osb
->osb_cluster_stack
[0])
1581 seq_printf(s
, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN
,
1582 osb
->osb_cluster_stack
);
1583 if (opts
& OCFS2_MOUNT_USRQUOTA
)
1584 seq_printf(s
, ",usrquota");
1585 if (opts
& OCFS2_MOUNT_GRPQUOTA
)
1586 seq_printf(s
, ",grpquota");
1588 if (opts
& OCFS2_MOUNT_COHERENCY_BUFFERED
)
1589 seq_printf(s
, ",coherency=buffered");
1591 seq_printf(s
, ",coherency=full");
1593 if (opts
& OCFS2_MOUNT_NOUSERXATTR
)
1594 seq_printf(s
, ",nouser_xattr");
1596 seq_printf(s
, ",user_xattr");
1598 if (opts
& OCFS2_MOUNT_INODE64
)
1599 seq_printf(s
, ",inode64");
1601 if (opts
& OCFS2_MOUNT_POSIX_ACL
)
1602 seq_printf(s
, ",acl");
1604 seq_printf(s
, ",noacl");
1606 if (osb
->osb_resv_level
!= OCFS2_DEFAULT_RESV_LEVEL
)
1607 seq_printf(s
, ",resv_level=%d", osb
->osb_resv_level
);
1609 if (osb
->osb_dir_resv_level
!= osb
->osb_resv_level
)
1610 seq_printf(s
, ",dir_resv_level=%d", osb
->osb_resv_level
);
1615 wait_queue_head_t ocfs2__ioend_wq
[OCFS2_IOEND_WQ_HASH_SZ
];
1617 static int __init
ocfs2_init(void)
1621 ocfs2_print_version();
1623 for (i
= 0; i
< OCFS2_IOEND_WQ_HASH_SZ
; i
++)
1624 init_waitqueue_head(&ocfs2__ioend_wq
[i
]);
1626 status
= init_ocfs2_uptodate_cache();
1630 status
= ocfs2_initialize_mem_caches();
1634 ocfs2_wq
= create_singlethread_workqueue("ocfs2_wq");
1640 ocfs2_debugfs_root
= debugfs_create_dir("ocfs2", NULL
);
1641 if (!ocfs2_debugfs_root
) {
1643 mlog(ML_ERROR
, "Unable to create ocfs2 debugfs root.\n");
1646 ocfs2_set_locking_protocol();
1648 status
= register_quota_format(&ocfs2_quota_format
);
1651 status
= register_filesystem(&ocfs2_fs_type
);
1655 unregister_quota_format(&ocfs2_quota_format
);
1657 destroy_workqueue(ocfs2_wq
);
1658 debugfs_remove(ocfs2_debugfs_root
);
1660 ocfs2_free_mem_caches();
1662 exit_ocfs2_uptodate_cache();
1668 static void __exit
ocfs2_exit(void)
1671 flush_workqueue(ocfs2_wq
);
1672 destroy_workqueue(ocfs2_wq
);
1675 unregister_quota_format(&ocfs2_quota_format
);
1677 debugfs_remove(ocfs2_debugfs_root
);
1679 ocfs2_free_mem_caches();
1681 unregister_filesystem(&ocfs2_fs_type
);
1683 exit_ocfs2_uptodate_cache();
1686 static void ocfs2_put_super(struct super_block
*sb
)
1688 trace_ocfs2_put_super(sb
);
1690 ocfs2_sync_blockdev(sb
);
1691 ocfs2_dismount_volume(sb
, 0);
1694 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1696 struct ocfs2_super
*osb
;
1697 u32 numbits
, freebits
;
1699 struct ocfs2_dinode
*bm_lock
;
1700 struct buffer_head
*bh
= NULL
;
1701 struct inode
*inode
= NULL
;
1703 trace_ocfs2_statfs(dentry
->d_sb
, buf
);
1705 osb
= OCFS2_SB(dentry
->d_sb
);
1707 inode
= ocfs2_get_system_file_inode(osb
,
1708 GLOBAL_BITMAP_SYSTEM_INODE
,
1709 OCFS2_INVALID_SLOT
);
1711 mlog(ML_ERROR
, "failed to get bitmap inode\n");
1716 status
= ocfs2_inode_lock(inode
, &bh
, 0);
1722 bm_lock
= (struct ocfs2_dinode
*) bh
->b_data
;
1724 numbits
= le32_to_cpu(bm_lock
->id1
.bitmap1
.i_total
);
1725 freebits
= numbits
- le32_to_cpu(bm_lock
->id1
.bitmap1
.i_used
);
1727 buf
->f_type
= OCFS2_SUPER_MAGIC
;
1728 buf
->f_bsize
= dentry
->d_sb
->s_blocksize
;
1729 buf
->f_namelen
= OCFS2_MAX_FILENAME_LEN
;
1730 buf
->f_blocks
= ((sector_t
) numbits
) *
1731 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1732 buf
->f_bfree
= ((sector_t
) freebits
) *
1733 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1734 buf
->f_bavail
= buf
->f_bfree
;
1735 buf
->f_files
= numbits
;
1736 buf
->f_ffree
= freebits
;
1737 buf
->f_fsid
.val
[0] = crc32_le(0, osb
->uuid_str
, OCFS2_VOL_UUID_LEN
)
1739 buf
->f_fsid
.val
[1] = crc32_le(0, osb
->uuid_str
+ OCFS2_VOL_UUID_LEN
,
1740 OCFS2_VOL_UUID_LEN
) & 0xFFFFFFFFUL
;
1744 ocfs2_inode_unlock(inode
, 0);
1756 static void ocfs2_inode_init_once(void *data
)
1758 struct ocfs2_inode_info
*oi
= data
;
1761 oi
->ip_open_count
= 0;
1762 spin_lock_init(&oi
->ip_lock
);
1763 ocfs2_extent_map_init(&oi
->vfs_inode
);
1764 INIT_LIST_HEAD(&oi
->ip_io_markers
);
1765 oi
->ip_dir_start_lookup
= 0;
1766 atomic_set(&oi
->ip_unaligned_aio
, 0);
1767 init_rwsem(&oi
->ip_alloc_sem
);
1768 init_rwsem(&oi
->ip_xattr_sem
);
1769 mutex_init(&oi
->ip_io_mutex
);
1771 oi
->ip_blkno
= 0ULL;
1772 oi
->ip_clusters
= 0;
1774 ocfs2_resv_init_once(&oi
->ip_la_data_resv
);
1776 ocfs2_lock_res_init_once(&oi
->ip_rw_lockres
);
1777 ocfs2_lock_res_init_once(&oi
->ip_inode_lockres
);
1778 ocfs2_lock_res_init_once(&oi
->ip_open_lockres
);
1780 ocfs2_metadata_cache_init(INODE_CACHE(&oi
->vfs_inode
),
1781 &ocfs2_inode_caching_ops
);
1783 inode_init_once(&oi
->vfs_inode
);
1786 static int ocfs2_initialize_mem_caches(void)
1788 ocfs2_inode_cachep
= kmem_cache_create("ocfs2_inode_cache",
1789 sizeof(struct ocfs2_inode_info
),
1791 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1793 ocfs2_inode_init_once
);
1794 ocfs2_dquot_cachep
= kmem_cache_create("ocfs2_dquot_cache",
1795 sizeof(struct ocfs2_dquot
),
1797 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1800 ocfs2_qf_chunk_cachep
= kmem_cache_create("ocfs2_qf_chunk_cache",
1801 sizeof(struct ocfs2_quota_chunk
),
1803 (SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
),
1805 if (!ocfs2_inode_cachep
|| !ocfs2_dquot_cachep
||
1806 !ocfs2_qf_chunk_cachep
) {
1807 if (ocfs2_inode_cachep
)
1808 kmem_cache_destroy(ocfs2_inode_cachep
);
1809 if (ocfs2_dquot_cachep
)
1810 kmem_cache_destroy(ocfs2_dquot_cachep
);
1811 if (ocfs2_qf_chunk_cachep
)
1812 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1819 static void ocfs2_free_mem_caches(void)
1822 * Make sure all delayed rcu free inodes are flushed before we
1826 if (ocfs2_inode_cachep
)
1827 kmem_cache_destroy(ocfs2_inode_cachep
);
1828 ocfs2_inode_cachep
= NULL
;
1830 if (ocfs2_dquot_cachep
)
1831 kmem_cache_destroy(ocfs2_dquot_cachep
);
1832 ocfs2_dquot_cachep
= NULL
;
1834 if (ocfs2_qf_chunk_cachep
)
1835 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1836 ocfs2_qf_chunk_cachep
= NULL
;
1839 static int ocfs2_get_sector(struct super_block
*sb
,
1840 struct buffer_head
**bh
,
1844 if (!sb_set_blocksize(sb
, sect_size
)) {
1845 mlog(ML_ERROR
, "unable to set blocksize\n");
1849 *bh
= sb_getblk(sb
, block
);
1851 mlog_errno(-ENOMEM
);
1855 if (!buffer_dirty(*bh
))
1856 clear_buffer_uptodate(*bh
);
1858 ll_rw_block(READ
, 1, bh
);
1859 wait_on_buffer(*bh
);
1860 if (!buffer_uptodate(*bh
)) {
1870 static int ocfs2_mount_volume(struct super_block
*sb
)
1873 int unlock_super
= 0;
1874 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1876 if (ocfs2_is_hard_readonly(osb
))
1879 status
= ocfs2_dlm_init(osb
);
1885 status
= ocfs2_super_lock(osb
, 1);
1892 /* This will load up the node map and add ourselves to it. */
1893 status
= ocfs2_find_slot(osb
);
1899 /* load all node-local system inodes */
1900 status
= ocfs2_init_local_system_inodes(osb
);
1906 status
= ocfs2_check_volume(osb
);
1912 status
= ocfs2_truncate_log_init(osb
);
1918 ocfs2_super_unlock(osb
, 1);
1923 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
)
1925 int tmp
, hangup_needed
= 0;
1926 struct ocfs2_super
*osb
= NULL
;
1929 trace_ocfs2_dismount_volume(sb
);
1935 debugfs_remove(osb
->osb_ctxt
);
1938 * Flush inode dropping work queue so that deletes are
1939 * performed while the filesystem is still working
1941 ocfs2_drop_all_dl_inodes(osb
);
1943 /* Orphan scan should be stopped as early as possible */
1944 ocfs2_orphan_scan_stop(osb
);
1946 ocfs2_disable_quotas(osb
);
1948 ocfs2_shutdown_local_alloc(osb
);
1950 ocfs2_truncate_log_shutdown(osb
);
1952 /* This will disable recovery and flush any recovery work. */
1953 ocfs2_recovery_exit(osb
);
1955 ocfs2_journal_shutdown(osb
);
1957 ocfs2_sync_blockdev(sb
);
1959 ocfs2_purge_refcount_trees(osb
);
1961 /* No cluster connection means we've failed during mount, so skip
1962 * all the steps which depended on that to complete. */
1964 tmp
= ocfs2_super_lock(osb
, 1);
1971 if (osb
->slot_num
!= OCFS2_INVALID_SLOT
)
1972 ocfs2_put_slot(osb
);
1975 ocfs2_super_unlock(osb
, 1);
1977 ocfs2_release_system_inodes(osb
);
1980 * If we're dismounting due to mount error, mount.ocfs2 will clean
1981 * up heartbeat. If we're a local mount, there is no heartbeat.
1982 * If we failed before we got a uuid_str yet, we can't stop
1983 * heartbeat. Otherwise, do it.
1985 if (!mnt_err
&& !ocfs2_mount_local(osb
) && osb
->uuid_str
&&
1986 !ocfs2_is_hard_readonly(osb
))
1990 ocfs2_dlm_shutdown(osb
, hangup_needed
);
1992 ocfs2_blockcheck_stats_debugfs_remove(&osb
->osb_ecc_stats
);
1993 debugfs_remove(osb
->osb_debug_root
);
1996 ocfs2_cluster_hangup(osb
->uuid_str
, strlen(osb
->uuid_str
));
1998 atomic_set(&osb
->vol_state
, VOLUME_DISMOUNTED
);
2000 if (ocfs2_mount_local(osb
))
2001 snprintf(nodestr
, sizeof(nodestr
), "local");
2003 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
2005 printk(KERN_INFO
"ocfs2: Unmounting device (%s) on (node %s)\n",
2006 osb
->dev_str
, nodestr
);
2008 ocfs2_delete_osb(osb
);
2011 sb
->s_fs_info
= NULL
;
2014 static int ocfs2_setup_osb_uuid(struct ocfs2_super
*osb
, const unsigned char *uuid
,
2015 unsigned uuid_bytes
)
2020 BUG_ON(uuid_bytes
!= OCFS2_VOL_UUID_LEN
);
2022 osb
->uuid_str
= kzalloc(OCFS2_VOL_UUID_LEN
* 2 + 1, GFP_KERNEL
);
2023 if (osb
->uuid_str
== NULL
)
2026 for (i
= 0, ptr
= osb
->uuid_str
; i
< OCFS2_VOL_UUID_LEN
; i
++) {
2027 /* print with null */
2028 ret
= snprintf(ptr
, 3, "%02X", uuid
[i
]);
2029 if (ret
!= 2) /* drop super cleans up */
2031 /* then only advance past the last char */
2038 /* Make sure entire volume is addressable by our journal. Requires
2039 osb_clusters_at_boot to be valid and for the journal to have been
2040 initialized by ocfs2_journal_init(). */
2041 static int ocfs2_journal_addressable(struct ocfs2_super
*osb
)
2045 ocfs2_clusters_to_blocks(osb
->sb
,
2046 osb
->osb_clusters_at_boot
) - 1;
2048 /* 32-bit block number is always OK. */
2049 if (max_block
<= (u32
)~0ULL)
2052 /* Volume is "huge", so see if our journal is new enough to
2054 if (!(OCFS2_HAS_COMPAT_FEATURE(osb
->sb
,
2055 OCFS2_FEATURE_COMPAT_JBD2_SB
) &&
2056 jbd2_journal_check_used_features(osb
->journal
->j_journal
, 0, 0,
2057 JBD2_FEATURE_INCOMPAT_64BIT
))) {
2058 mlog(ML_ERROR
, "The journal cannot address the entire volume. "
2059 "Enable the 'block64' journal option with tunefs.ocfs2");
2068 static int ocfs2_initialize_super(struct super_block
*sb
,
2069 struct buffer_head
*bh
,
2071 struct ocfs2_blockcheck_stats
*stats
)
2074 int i
, cbits
, bbits
;
2075 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*)bh
->b_data
;
2076 struct inode
*inode
= NULL
;
2077 struct ocfs2_journal
*journal
;
2078 __le32 uuid_net_key
;
2079 struct ocfs2_super
*osb
;
2082 osb
= kzalloc(sizeof(struct ocfs2_super
), GFP_KERNEL
);
2089 sb
->s_fs_info
= osb
;
2090 sb
->s_op
= &ocfs2_sops
;
2091 sb
->s_d_op
= &ocfs2_dentry_ops
;
2092 sb
->s_export_op
= &ocfs2_export_ops
;
2093 sb
->s_qcop
= &ocfs2_quotactl_ops
;
2094 sb
->dq_op
= &ocfs2_quota_operations
;
2095 sb
->s_xattr
= ocfs2_xattr_handlers
;
2096 sb
->s_time_gran
= 1;
2097 sb
->s_flags
|= MS_NOATIME
;
2098 /* this is needed to support O_LARGEFILE */
2099 cbits
= le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2100 bbits
= le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
);
2101 sb
->s_maxbytes
= ocfs2_max_file_offset(bbits
, cbits
);
2103 osb
->osb_dx_mask
= (1 << (cbits
- bbits
)) - 1;
2105 for (i
= 0; i
< 3; i
++)
2106 osb
->osb_dx_seed
[i
] = le32_to_cpu(di
->id2
.i_super
.s_dx_seed
[i
]);
2107 osb
->osb_dx_seed
[3] = le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2110 /* Save off for ocfs2_rw_direct */
2111 osb
->s_sectsize_bits
= blksize_bits(sector_size
);
2112 BUG_ON(!osb
->s_sectsize_bits
);
2114 spin_lock_init(&osb
->dc_task_lock
);
2115 init_waitqueue_head(&osb
->dc_event
);
2116 osb
->dc_work_sequence
= 0;
2117 osb
->dc_wake_sequence
= 0;
2118 INIT_LIST_HEAD(&osb
->blocked_lock_list
);
2119 osb
->blocked_lock_count
= 0;
2120 spin_lock_init(&osb
->osb_lock
);
2121 spin_lock_init(&osb
->osb_xattr_lock
);
2122 ocfs2_init_steal_slots(osb
);
2124 atomic_set(&osb
->alloc_stats
.moves
, 0);
2125 atomic_set(&osb
->alloc_stats
.local_data
, 0);
2126 atomic_set(&osb
->alloc_stats
.bitmap_data
, 0);
2127 atomic_set(&osb
->alloc_stats
.bg_allocs
, 0);
2128 atomic_set(&osb
->alloc_stats
.bg_extends
, 0);
2130 /* Copy the blockcheck stats from the superblock probe */
2131 osb
->osb_ecc_stats
= *stats
;
2133 ocfs2_init_node_maps(osb
);
2135 snprintf(osb
->dev_str
, sizeof(osb
->dev_str
), "%u,%u",
2136 MAJOR(osb
->sb
->s_dev
), MINOR(osb
->sb
->s_dev
));
2138 osb
->max_slots
= le16_to_cpu(di
->id2
.i_super
.s_max_slots
);
2139 if (osb
->max_slots
> OCFS2_MAX_SLOTS
|| osb
->max_slots
== 0) {
2140 mlog(ML_ERROR
, "Invalid number of node slots (%u)\n",
2146 ocfs2_orphan_scan_init(osb
);
2148 status
= ocfs2_recovery_init(osb
);
2150 mlog(ML_ERROR
, "Unable to initialize recovery state\n");
2155 init_waitqueue_head(&osb
->checkpoint_event
);
2157 osb
->s_atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
2159 osb
->slot_num
= OCFS2_INVALID_SLOT
;
2161 osb
->s_xattr_inline_size
= le16_to_cpu(
2162 di
->id2
.i_super
.s_xattr_inline_size
);
2164 osb
->local_alloc_state
= OCFS2_LA_UNUSED
;
2165 osb
->local_alloc_bh
= NULL
;
2166 INIT_DELAYED_WORK(&osb
->la_enable_wq
, ocfs2_la_enable_worker
);
2168 init_waitqueue_head(&osb
->osb_mount_event
);
2170 status
= ocfs2_resmap_init(osb
, &osb
->osb_la_resmap
);
2176 osb
->vol_label
= kmalloc(OCFS2_MAX_VOL_LABEL_LEN
, GFP_KERNEL
);
2177 if (!osb
->vol_label
) {
2178 mlog(ML_ERROR
, "unable to alloc vol label\n");
2183 osb
->slot_recovery_generations
=
2184 kcalloc(osb
->max_slots
, sizeof(*osb
->slot_recovery_generations
),
2186 if (!osb
->slot_recovery_generations
) {
2192 init_waitqueue_head(&osb
->osb_wipe_event
);
2193 osb
->osb_orphan_wipes
= kcalloc(osb
->max_slots
,
2194 sizeof(*osb
->osb_orphan_wipes
),
2196 if (!osb
->osb_orphan_wipes
) {
2202 osb
->osb_rf_lock_tree
= RB_ROOT
;
2204 osb
->s_feature_compat
=
2205 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_compat
);
2206 osb
->s_feature_ro_compat
=
2207 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_ro_compat
);
2208 osb
->s_feature_incompat
=
2209 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_incompat
);
2211 if ((i
= OCFS2_HAS_INCOMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_INCOMPAT_SUPP
))) {
2212 mlog(ML_ERROR
, "couldn't mount because of unsupported "
2213 "optional features (%x).\n", i
);
2217 if (!(osb
->sb
->s_flags
& MS_RDONLY
) &&
2218 (i
= OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
))) {
2219 mlog(ML_ERROR
, "couldn't mount RDWR because of "
2220 "unsupported optional features (%x).\n", i
);
2225 if (ocfs2_clusterinfo_valid(osb
)) {
2226 osb
->osb_stackflags
=
2227 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stackflags
;
2228 memcpy(osb
->osb_cluster_stack
,
2229 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stack
,
2230 OCFS2_STACK_LABEL_LEN
);
2231 osb
->osb_cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
2232 if (strlen(osb
->osb_cluster_stack
) != OCFS2_STACK_LABEL_LEN
) {
2234 "couldn't mount because of an invalid "
2235 "cluster stack label (%s) \n",
2236 osb
->osb_cluster_stack
);
2241 /* The empty string is identical with classic tools that
2242 * don't know about s_cluster_info. */
2243 osb
->osb_cluster_stack
[0] = '\0';
2246 get_random_bytes(&osb
->s_next_generation
, sizeof(u32
));
2249 * This should be done in ocfs2_journal_init(), but unknown
2250 * ordering issues will cause the filesystem to crash.
2251 * If anyone wants to figure out what part of the code
2252 * refers to osb->journal before ocfs2_journal_init() is run,
2255 /* initialize our journal structure */
2257 journal
= kzalloc(sizeof(struct ocfs2_journal
), GFP_KERNEL
);
2259 mlog(ML_ERROR
, "unable to alloc journal\n");
2263 osb
->journal
= journal
;
2264 journal
->j_osb
= osb
;
2266 atomic_set(&journal
->j_num_trans
, 0);
2267 init_rwsem(&journal
->j_trans_barrier
);
2268 init_waitqueue_head(&journal
->j_checkpointed
);
2269 spin_lock_init(&journal
->j_lock
);
2270 journal
->j_trans_id
= (unsigned long) 1;
2271 INIT_LIST_HEAD(&journal
->j_la_cleanups
);
2272 INIT_WORK(&journal
->j_recovery_work
, ocfs2_complete_recovery
);
2273 journal
->j_state
= OCFS2_JOURNAL_FREE
;
2275 INIT_WORK(&osb
->dentry_lock_work
, ocfs2_drop_dl_inodes
);
2276 osb
->dentry_lock_list
= NULL
;
2278 /* get some pseudo constants for clustersize bits */
2279 osb
->s_clustersize_bits
=
2280 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2281 osb
->s_clustersize
= 1 << osb
->s_clustersize_bits
;
2283 if (osb
->s_clustersize
< OCFS2_MIN_CLUSTERSIZE
||
2284 osb
->s_clustersize
> OCFS2_MAX_CLUSTERSIZE
) {
2285 mlog(ML_ERROR
, "Volume has invalid cluster size (%d)\n",
2286 osb
->s_clustersize
);
2291 total_blocks
= ocfs2_clusters_to_blocks(osb
->sb
,
2292 le32_to_cpu(di
->i_clusters
));
2294 status
= generic_check_addressable(osb
->sb
->s_blocksize_bits
,
2297 mlog(ML_ERROR
, "Volume too large "
2298 "to mount safely on this system");
2303 if (ocfs2_setup_osb_uuid(osb
, di
->id2
.i_super
.s_uuid
,
2304 sizeof(di
->id2
.i_super
.s_uuid
))) {
2305 mlog(ML_ERROR
, "Out of memory trying to setup our uuid.\n");
2310 memcpy(&uuid_net_key
, di
->id2
.i_super
.s_uuid
, sizeof(uuid_net_key
));
2312 strncpy(osb
->vol_label
, di
->id2
.i_super
.s_label
, 63);
2313 osb
->vol_label
[63] = '\0';
2314 osb
->root_blkno
= le64_to_cpu(di
->id2
.i_super
.s_root_blkno
);
2315 osb
->system_dir_blkno
= le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
);
2316 osb
->first_cluster_group_blkno
=
2317 le64_to_cpu(di
->id2
.i_super
.s_first_cluster_group
);
2318 osb
->fs_generation
= le32_to_cpu(di
->i_fs_generation
);
2319 osb
->uuid_hash
= le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2320 trace_ocfs2_initialize_super(osb
->vol_label
, osb
->uuid_str
,
2321 (unsigned long long)osb
->root_blkno
,
2322 (unsigned long long)osb
->system_dir_blkno
,
2323 osb
->s_clustersize_bits
);
2325 osb
->osb_dlm_debug
= ocfs2_new_dlm_debug();
2326 if (!osb
->osb_dlm_debug
) {
2332 atomic_set(&osb
->vol_state
, VOLUME_INIT
);
2334 /* load root, system_dir, and all global system inodes */
2335 status
= ocfs2_init_global_system_inodes(osb
);
2344 inode
= ocfs2_get_system_file_inode(osb
, GLOBAL_BITMAP_SYSTEM_INODE
,
2345 OCFS2_INVALID_SLOT
);
2352 osb
->bitmap_blkno
= OCFS2_I(inode
)->ip_blkno
;
2353 osb
->osb_clusters_at_boot
= OCFS2_I(inode
)->ip_clusters
;
2356 osb
->bitmap_cpg
= ocfs2_group_bitmap_size(sb
, 0,
2357 osb
->s_feature_incompat
) * 8;
2359 status
= ocfs2_init_slot_info(osb
);
2364 cleancache_init_shared_fs((char *)&di
->id2
.i_super
.s_uuid
, sb
);
2371 * will return: -EAGAIN if it is ok to keep searching for superblocks
2372 * -EINVAL if there is a bad superblock
2375 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
2376 struct buffer_head
*bh
,
2378 struct ocfs2_blockcheck_stats
*stats
)
2380 int status
= -EAGAIN
;
2382 if (memcmp(di
->i_signature
, OCFS2_SUPER_BLOCK_SIGNATURE
,
2383 strlen(OCFS2_SUPER_BLOCK_SIGNATURE
)) == 0) {
2384 /* We have to do a raw check of the feature here */
2385 if (le32_to_cpu(di
->id2
.i_super
.s_feature_incompat
) &
2386 OCFS2_FEATURE_INCOMPAT_META_ECC
) {
2387 status
= ocfs2_block_check_validate(bh
->b_data
,
2395 if ((1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
)) != blksz
) {
2396 mlog(ML_ERROR
, "found superblock with incorrect block "
2397 "size: found %u, should be %u\n",
2398 1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
),
2400 } else if (le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
) !=
2401 OCFS2_MAJOR_REV_LEVEL
||
2402 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
) !=
2403 OCFS2_MINOR_REV_LEVEL
) {
2404 mlog(ML_ERROR
, "found superblock with bad version: "
2405 "found %u.%u, should be %u.%u\n",
2406 le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
),
2407 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
),
2408 OCFS2_MAJOR_REV_LEVEL
,
2409 OCFS2_MINOR_REV_LEVEL
);
2410 } else if (bh
->b_blocknr
!= le64_to_cpu(di
->i_blkno
)) {
2411 mlog(ML_ERROR
, "bad block number on superblock: "
2412 "found %llu, should be %llu\n",
2413 (unsigned long long)le64_to_cpu(di
->i_blkno
),
2414 (unsigned long long)bh
->b_blocknr
);
2415 } else if (le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) < 12 ||
2416 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) > 20) {
2417 mlog(ML_ERROR
, "bad cluster size found: %u\n",
2418 1 << le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
));
2419 } else if (!le64_to_cpu(di
->id2
.i_super
.s_root_blkno
)) {
2420 mlog(ML_ERROR
, "bad root_blkno: 0\n");
2421 } else if (!le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
)) {
2422 mlog(ML_ERROR
, "bad system_dir_blkno: 0\n");
2423 } else if (le16_to_cpu(di
->id2
.i_super
.s_max_slots
) > OCFS2_MAX_SLOTS
) {
2425 "Superblock slots found greater than file system "
2426 "maximum: found %u, max %u\n",
2427 le16_to_cpu(di
->id2
.i_super
.s_max_slots
),
2436 if (status
&& status
!= -EAGAIN
)
2441 static int ocfs2_check_volume(struct ocfs2_super
*osb
)
2446 struct ocfs2_dinode
*local_alloc
= NULL
; /* only used if we
2450 /* Init our journal object. */
2451 status
= ocfs2_journal_init(osb
->journal
, &dirty
);
2453 mlog(ML_ERROR
, "Could not initialize journal!\n");
2457 /* Now that journal has been initialized, check to make sure
2458 entire volume is addressable. */
2459 status
= ocfs2_journal_addressable(osb
);
2463 /* If the journal was unmounted cleanly then we don't want to
2464 * recover anything. Otherwise, journal_load will do that
2465 * dirty work for us :) */
2467 status
= ocfs2_journal_wipe(osb
->journal
, 0);
2473 printk(KERN_NOTICE
"ocfs2: File system on device (%s) was not "
2474 "unmounted cleanly, recovering it.\n", osb
->dev_str
);
2477 local
= ocfs2_mount_local(osb
);
2479 /* will play back anything left in the journal. */
2480 status
= ocfs2_journal_load(osb
->journal
, local
, dirty
);
2482 mlog(ML_ERROR
, "ocfs2 journal load failed! %d\n", status
);
2487 /* recover my local alloc if we didn't unmount cleanly. */
2488 status
= ocfs2_begin_local_alloc_recovery(osb
,
2495 /* we complete the recovery process after we've marked
2496 * ourselves as mounted. */
2499 status
= ocfs2_load_local_alloc(osb
);
2506 /* Recovery will be completed after we've mounted the
2507 * rest of the volume. */
2509 osb
->local_alloc_copy
= local_alloc
;
2513 /* go through each journal, trylock it and if you get the
2514 * lock, and it's marked as dirty, set the bit in the recover
2515 * map and launch a recovery thread for it. */
2516 status
= ocfs2_mark_dead_nodes(osb
);
2522 status
= ocfs2_compute_replay_slots(osb
);
2535 * The routine gets called from dismount or close whenever a dismount on
2536 * volume is requested and the osb open count becomes 1.
2537 * It will remove the osb from the global list and also free up all the
2538 * initialized resources and fileobject.
2540 static void ocfs2_delete_osb(struct ocfs2_super
*osb
)
2542 /* This function assumes that the caller has the main osb resource */
2544 ocfs2_free_slot_info(osb
);
2546 kfree(osb
->osb_orphan_wipes
);
2547 kfree(osb
->slot_recovery_generations
);
2549 * This belongs in journal shutdown, but because we have to
2550 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2553 kfree(osb
->journal
);
2554 kfree(osb
->local_alloc_copy
);
2555 kfree(osb
->uuid_str
);
2556 ocfs2_put_dlm_debug(osb
->osb_dlm_debug
);
2557 memset(osb
, 0, sizeof(struct ocfs2_super
));
2560 /* Put OCFS2 into a readonly state, or (if the user specifies it),
2561 * panic(). We do not support continue-on-error operation. */
2562 static void ocfs2_handle_error(struct super_block
*sb
)
2564 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
2566 if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_PANIC
)
2567 panic("OCFS2: (device %s): panic forced after error\n",
2570 ocfs2_set_osb_flag(osb
, OCFS2_OSB_ERROR_FS
);
2572 if (sb
->s_flags
& MS_RDONLY
&&
2573 (ocfs2_is_soft_readonly(osb
) ||
2574 ocfs2_is_hard_readonly(osb
)))
2577 printk(KERN_CRIT
"File system is now read-only due to the potential "
2578 "of on-disk corruption. Please run fsck.ocfs2 once the file "
2579 "system is unmounted.\n");
2580 sb
->s_flags
|= MS_RDONLY
;
2581 ocfs2_set_ro_flag(osb
, 0);
2584 static char error_buf
[1024];
2586 void __ocfs2_error(struct super_block
*sb
,
2587 const char *function
,
2588 const char *fmt
, ...)
2592 va_start(args
, fmt
);
2593 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2596 /* Not using mlog here because we want to show the actual
2597 * function the error came from. */
2598 printk(KERN_CRIT
"OCFS2: ERROR (device %s): %s: %s\n",
2599 sb
->s_id
, function
, error_buf
);
2601 ocfs2_handle_error(sb
);
2604 /* Handle critical errors. This is intentionally more drastic than
2605 * ocfs2_handle_error, so we only use for things like journal errors,
2607 void __ocfs2_abort(struct super_block
* sb
,
2608 const char *function
,
2609 const char *fmt
, ...)
2613 va_start(args
, fmt
);
2614 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2617 printk(KERN_CRIT
"OCFS2: abort (device %s): %s: %s\n",
2618 sb
->s_id
, function
, error_buf
);
2620 /* We don't have the cluster support yet to go straight to
2621 * hard readonly in here. Until then, we want to keep
2622 * ocfs2_abort() so that we can at least mark critical
2625 * TODO: This should abort the journal and alert other nodes
2626 * that our slot needs recovery. */
2628 /* Force a panic(). This stinks, but it's better than letting
2629 * things continue without having a proper hard readonly
2631 if (!ocfs2_mount_local(OCFS2_SB(sb
)))
2632 OCFS2_SB(sb
)->s_mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
2633 ocfs2_handle_error(sb
);
2637 * Void signal blockers, because in-kernel sigprocmask() only fails
2638 * when SIG_* is wrong.
2640 void ocfs2_block_signals(sigset_t
*oldset
)
2645 sigfillset(&blocked
);
2646 rc
= sigprocmask(SIG_BLOCK
, &blocked
, oldset
);
2650 void ocfs2_unblock_signals(sigset_t
*oldset
)
2652 int rc
= sigprocmask(SIG_SETMASK
, oldset
, NULL
);
2656 module_init(ocfs2_init
);
2657 module_exit(ocfs2_exit
);