1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * load/unload driver, mount/dismount volumes
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
26 #include <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/slab.h>
30 #include <linux/highmem.h>
31 #include <linux/init.h>
32 #include <linux/random.h>
33 #include <linux/statfs.h>
34 #include <linux/moduleparam.h>
35 #include <linux/blkdev.h>
36 #include <linux/socket.h>
37 #include <linux/inet.h>
38 #include <linux/parser.h>
39 #include <linux/crc32.h>
40 #include <linux/debugfs.h>
41 #include <linux/mount.h>
42 #include <linux/seq_file.h>
43 #include <linux/quotaops.h>
44 #include <linux/cleancache.h>
45 #include <linux/signal.h>
47 #define CREATE_TRACE_POINTS
48 #include "ocfs2_trace.h"
50 #include <cluster/masklog.h>
54 /* this should be the only file to include a version 1 header */
55 #include "ocfs1_fs_compat.h"
59 #include "blockcheck.h"
62 #include "extent_map.h"
63 #include "heartbeat.h"
66 #include "localalloc.h"
74 #include "refcounttree.h"
77 #include "buffer_head_io.h"
78 #include "filecheck.h"
80 static struct kmem_cache *ocfs2_inode_cachep;
81 struct kmem_cache *ocfs2_dquot_cachep;
82 struct kmem_cache *ocfs2_qf_chunk_cachep;
84 static struct dentry *ocfs2_debugfs_root;
86 MODULE_AUTHOR("Oracle");
87 MODULE_LICENSE("GPL");
88 MODULE_DESCRIPTION("OCFS2 cluster file system");
92 unsigned long commit_interval;
93 unsigned long mount_opt;
94 unsigned int atime_quantum;
97 unsigned int resv_level;
99 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
102 static int ocfs2_parse_options(struct super_block *sb, char *options,
103 struct mount_options *mopt,
105 static int ocfs2_check_set_options(struct super_block *sb,
106 struct mount_options *options);
107 static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
108 static void ocfs2_put_super(struct super_block *sb);
109 static int ocfs2_mount_volume(struct super_block *sb);
110 static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
111 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
112 static int ocfs2_initialize_mem_caches(void);
113 static void ocfs2_free_mem_caches(void);
114 static void ocfs2_delete_osb(struct ocfs2_super *osb);
116 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
118 static int ocfs2_sync_fs(struct super_block *sb, int wait);
120 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
121 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
122 static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
123 static int ocfs2_check_volume(struct ocfs2_super *osb);
124 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
125 struct buffer_head *bh,
127 struct ocfs2_blockcheck_stats *stats);
128 static int ocfs2_initialize_super(struct super_block *sb,
129 struct buffer_head *bh,
131 struct ocfs2_blockcheck_stats *stats);
132 static int ocfs2_get_sector(struct super_block *sb,
133 struct buffer_head **bh,
136 static struct inode *ocfs2_alloc_inode(struct super_block *sb);
137 static void ocfs2_free_inode(struct inode *inode);
138 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
139 static int ocfs2_enable_quotas(struct ocfs2_super *osb);
140 static void ocfs2_disable_quotas(struct ocfs2_super *osb);
142 static struct dquot **ocfs2_get_dquots(struct inode *inode)
144 return OCFS2_I(inode)->i_dquot;
147 static const struct super_operations ocfs2_sops = {
148 .statfs = ocfs2_statfs,
149 .alloc_inode = ocfs2_alloc_inode,
150 .free_inode = ocfs2_free_inode,
151 .drop_inode = ocfs2_drop_inode,
152 .evict_inode = ocfs2_evict_inode,
153 .sync_fs = ocfs2_sync_fs,
154 .put_super = ocfs2_put_super,
155 .remount_fs = ocfs2_remount,
156 .show_options = ocfs2_show_options,
157 .quota_read = ocfs2_quota_read,
158 .quota_write = ocfs2_quota_write,
159 .get_dquots = ocfs2_get_dquots,
186 Opt_coherency_buffered,
190 Opt_journal_async_commit,
195 static const match_table_t tokens = {
196 {Opt_barrier, "barrier=%u"},
197 {Opt_err_panic, "errors=panic"},
198 {Opt_err_ro, "errors=remount-ro"},
200 {Opt_nointr, "nointr"},
201 {Opt_hb_none, OCFS2_HB_NONE},
202 {Opt_hb_local, OCFS2_HB_LOCAL},
203 {Opt_hb_global, OCFS2_HB_GLOBAL},
204 {Opt_data_ordered, "data=ordered"},
205 {Opt_data_writeback, "data=writeback"},
206 {Opt_atime_quantum, "atime_quantum=%u"},
207 {Opt_slot, "preferred_slot=%u"},
208 {Opt_commit, "commit=%u"},
209 {Opt_localalloc, "localalloc=%d"},
210 {Opt_localflocks, "localflocks"},
211 {Opt_stack, "cluster_stack=%s"},
212 {Opt_user_xattr, "user_xattr"},
213 {Opt_nouser_xattr, "nouser_xattr"},
214 {Opt_inode64, "inode64"},
216 {Opt_noacl, "noacl"},
217 {Opt_usrquota, "usrquota"},
218 {Opt_grpquota, "grpquota"},
219 {Opt_coherency_buffered, "coherency=buffered"},
220 {Opt_coherency_full, "coherency=full"},
221 {Opt_resv_level, "resv_level=%u"},
222 {Opt_dir_resv_level, "dir_resv_level=%u"},
223 {Opt_journal_async_commit, "journal_async_commit"},
224 {Opt_err_cont, "errors=continue"},
228 #ifdef CONFIG_DEBUG_FS
229 static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
231 struct ocfs2_cluster_connection *cconn = osb->cconn;
232 struct ocfs2_recovery_map *rm = osb->recovery_map;
233 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
237 out += snprintf(buf + out, len - out,
238 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
239 "Device", osb->dev_str, osb->uuid_str,
240 osb->fs_generation, osb->vol_label);
242 out += snprintf(buf + out, len - out,
243 "%10s => State: %d Flags: 0x%lX\n", "Volume",
244 atomic_read(&osb->vol_state), osb->osb_flags);
246 out += snprintf(buf + out, len - out,
247 "%10s => Block: %lu Cluster: %d\n", "Sizes",
248 osb->sb->s_blocksize, osb->s_clustersize);
250 out += snprintf(buf + out, len - out,
251 "%10s => Compat: 0x%X Incompat: 0x%X "
253 "Features", osb->s_feature_compat,
254 osb->s_feature_incompat, osb->s_feature_ro_compat);
256 out += snprintf(buf + out, len - out,
257 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
258 osb->s_mount_opt, osb->s_atime_quantum);
261 out += snprintf(buf + out, len - out,
262 "%10s => Stack: %s Name: %*s "
263 "Version: %d.%d\n", "Cluster",
264 (*osb->osb_cluster_stack == '\0' ?
265 "o2cb" : osb->osb_cluster_stack),
266 cconn->cc_namelen, cconn->cc_name,
267 cconn->cc_version.pv_major,
268 cconn->cc_version.pv_minor);
271 spin_lock_irqsave(&osb->dc_task_lock, flags);
272 out += snprintf(buf + out, len - out,
273 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
274 "WorkSeq: %lu\n", "DownCnvt",
275 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
276 osb->blocked_lock_count, osb->dc_wake_sequence,
277 osb->dc_work_sequence);
278 spin_unlock_irqrestore(&osb->dc_task_lock, flags);
280 spin_lock(&osb->osb_lock);
281 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
283 (osb->recovery_thread_task ?
284 task_pid_nr(osb->recovery_thread_task) : -1));
285 if (rm->rm_used == 0)
286 out += snprintf(buf + out, len - out, " None\n");
288 for (i = 0; i < rm->rm_used; i++)
289 out += snprintf(buf + out, len - out, " %d",
291 out += snprintf(buf + out, len - out, "\n");
293 spin_unlock(&osb->osb_lock);
295 out += snprintf(buf + out, len - out,
296 "%10s => Pid: %d Interval: %lu\n", "Commit",
297 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
298 osb->osb_commit_interval);
300 out += snprintf(buf + out, len - out,
301 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
302 "Journal", osb->journal->j_state,
303 osb->journal->j_trans_id,
304 atomic_read(&osb->journal->j_num_trans));
306 out += snprintf(buf + out, len - out,
307 "%10s => GlobalAllocs: %d LocalAllocs: %d "
308 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
310 atomic_read(&osb->alloc_stats.bitmap_data),
311 atomic_read(&osb->alloc_stats.local_data),
312 atomic_read(&osb->alloc_stats.bg_allocs),
313 atomic_read(&osb->alloc_stats.moves),
314 atomic_read(&osb->alloc_stats.bg_extends));
316 out += snprintf(buf + out, len - out,
317 "%10s => State: %u Descriptor: %llu Size: %u bits "
318 "Default: %u bits\n",
319 "LocalAlloc", osb->local_alloc_state,
320 (unsigned long long)osb->la_last_gd,
321 osb->local_alloc_bits, osb->local_alloc_default_bits);
323 spin_lock(&osb->osb_lock);
324 out += snprintf(buf + out, len - out,
325 "%10s => InodeSlot: %d StolenInodes: %d, "
326 "MetaSlot: %d StolenMeta: %d\n", "Steal",
327 osb->s_inode_steal_slot,
328 atomic_read(&osb->s_num_inodes_stolen),
329 osb->s_meta_steal_slot,
330 atomic_read(&osb->s_num_meta_stolen));
331 spin_unlock(&osb->osb_lock);
333 out += snprintf(buf + out, len - out, "OrphanScan => ");
334 out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
335 os->os_count, os->os_seqno);
336 out += snprintf(buf + out, len - out, " Last Scan: ");
337 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
338 out += snprintf(buf + out, len - out, "Disabled\n");
340 out += snprintf(buf + out, len - out, "%lu seconds ago\n",
341 (unsigned long)(ktime_get_seconds() - os->os_scantime));
343 out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
344 "Slots", "Num", "RecoGen");
345 for (i = 0; i < osb->max_slots; ++i) {
346 out += snprintf(buf + out, len - out,
347 "%10s %c %3d %10d\n",
349 (i == osb->slot_num ? '*' : ' '),
350 i, osb->slot_recovery_generations[i]);
356 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
358 struct ocfs2_super *osb = inode->i_private;
361 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
365 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
367 file->private_data = buf;
374 static int ocfs2_debug_release(struct inode *inode, struct file *file)
376 kfree(file->private_data);
380 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
381 size_t nbytes, loff_t *ppos)
383 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
384 i_size_read(file->f_mapping->host));
387 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
391 static int ocfs2_debug_release(struct inode *inode, struct file *file)
395 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
396 size_t nbytes, loff_t *ppos)
400 #endif /* CONFIG_DEBUG_FS */
402 static const struct file_operations ocfs2_osb_debug_fops = {
403 .open = ocfs2_osb_debug_open,
404 .release = ocfs2_debug_release,
405 .read = ocfs2_debug_read,
406 .llseek = generic_file_llseek,
409 static int ocfs2_sync_fs(struct super_block *sb, int wait)
413 struct ocfs2_super *osb = OCFS2_SB(sb);
415 if (ocfs2_is_hard_readonly(osb))
419 status = ocfs2_flush_truncate_log(osb);
423 ocfs2_schedule_truncate_log_flush(osb, 0);
426 if (jbd2_journal_start_commit(osb->journal->j_journal,
429 jbd2_log_wait_commit(osb->journal->j_journal,
435 static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
437 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
438 && (ino == USER_QUOTA_SYSTEM_INODE
439 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
441 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
442 && (ino == GROUP_QUOTA_SYSTEM_INODE
443 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
448 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
450 struct inode *new = NULL;
454 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
456 status = PTR_ERR(new);
460 osb->root_inode = new;
462 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
464 status = PTR_ERR(new);
468 osb->sys_root_inode = new;
470 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
471 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
472 if (!ocfs2_need_system_inode(osb, i))
474 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
476 ocfs2_release_system_inodes(osb);
477 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
479 mlog(ML_ERROR, "Unable to load system inode %d, "
480 "possibly corrupt fs?", i);
483 // the array now has one ref, so drop this one
493 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
495 struct inode *new = NULL;
499 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
500 i < NUM_SYSTEM_INODES;
502 if (!ocfs2_need_system_inode(osb, i))
504 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
506 ocfs2_release_system_inodes(osb);
507 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
508 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
509 status, i, osb->slot_num);
512 /* the array now has one ref, so drop this one */
522 static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
527 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
528 inode = osb->global_system_inodes[i];
531 osb->global_system_inodes[i] = NULL;
535 inode = osb->sys_root_inode;
538 osb->sys_root_inode = NULL;
541 inode = osb->root_inode;
544 osb->root_inode = NULL;
547 if (!osb->local_system_inodes)
550 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
551 if (osb->local_system_inodes[i]) {
552 iput(osb->local_system_inodes[i]);
553 osb->local_system_inodes[i] = NULL;
557 kfree(osb->local_system_inodes);
558 osb->local_system_inodes = NULL;
561 /* We're allocating fs objects, use GFP_NOFS */
562 static struct inode *ocfs2_alloc_inode(struct super_block *sb)
564 struct ocfs2_inode_info *oi;
566 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
571 oi->i_datasync_tid = 0;
572 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
574 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
575 return &oi->vfs_inode;
578 static void ocfs2_free_inode(struct inode *inode)
580 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
583 static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
586 unsigned int bytes = 1 << cbits;
587 unsigned int trim = bytes;
588 unsigned int bitshift = 32;
591 * i_size and all block offsets in ocfs2 are always 64 bits
592 * wide. i_clusters is 32 bits, in cluster-sized units. So on
593 * 64 bit platforms, cluster size will be the limiting factor.
596 #if BITS_PER_LONG == 32
597 BUILD_BUG_ON(sizeof(sector_t) != 8);
599 * We might be limited by page cache size.
601 if (bytes > PAGE_SIZE) {
605 * Shift by 31 here so that we don't get larger than
613 * Trim by a whole cluster when we can actually approach the
614 * on-disk limits. Otherwise we can overflow i_clusters when
615 * an extent start is at the max offset.
617 return (((unsigned long long)bytes) << bitshift) - trim;
620 static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
622 int incompat_features;
624 struct mount_options parsed_options;
625 struct ocfs2_super *osb = OCFS2_SB(sb);
630 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
631 !ocfs2_check_set_options(sb, &parsed_options)) {
636 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
638 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
640 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
644 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
645 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
647 mlog(ML_ERROR, "Cannot change data mode on remount\n");
651 /* Probably don't want this on remount; it might
652 * mess with other nodes */
653 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
654 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
656 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
660 /* We're going to/from readonly mode. */
661 if ((bool)(*flags & SB_RDONLY) != sb_rdonly(sb)) {
662 /* Disable quota accounting before remounting RO */
663 if (*flags & SB_RDONLY) {
664 ret = ocfs2_susp_quotas(osb, 0);
668 /* Lock here so the check of HARD_RO and the potential
669 * setting of SOFT_RO is atomic. */
670 spin_lock(&osb->osb_lock);
671 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
672 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
677 if (*flags & SB_RDONLY) {
678 sb->s_flags |= SB_RDONLY;
679 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
681 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
682 mlog(ML_ERROR, "Cannot remount RDWR "
683 "filesystem due to previous errors.\n");
687 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
688 if (incompat_features) {
689 mlog(ML_ERROR, "Cannot remount RDWR because "
690 "of unsupported optional features "
691 "(%x).\n", incompat_features);
695 sb->s_flags &= ~SB_RDONLY;
696 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
698 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
700 spin_unlock(&osb->osb_lock);
701 /* Enable quota accounting after remounting RW */
702 if (!ret && !(*flags & SB_RDONLY)) {
703 if (sb_any_quota_suspended(sb))
704 ret = ocfs2_susp_quotas(osb, 1);
706 ret = ocfs2_enable_quotas(osb);
708 /* Return back changes... */
709 spin_lock(&osb->osb_lock);
710 sb->s_flags |= SB_RDONLY;
711 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
712 spin_unlock(&osb->osb_lock);
719 /* Only save off the new mount options in case of a successful
721 osb->s_mount_opt = parsed_options.mount_opt;
722 osb->s_atime_quantum = parsed_options.atime_quantum;
723 osb->preferred_slot = parsed_options.slot;
724 if (parsed_options.commit_interval)
725 osb->osb_commit_interval = parsed_options.commit_interval;
727 if (!ocfs2_is_hard_readonly(osb))
728 ocfs2_set_journal_params(osb);
730 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
731 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
738 static int ocfs2_sb_probe(struct super_block *sb,
739 struct buffer_head **bh,
741 struct ocfs2_blockcheck_stats *stats)
744 struct ocfs1_vol_disk_hdr *hdr;
745 struct ocfs2_dinode *di;
751 *sector_size = bdev_logical_block_size(sb->s_bdev);
752 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
753 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
754 *sector_size, OCFS2_MAX_BLOCKSIZE);
759 /* Can this really happen? */
760 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
761 *sector_size = OCFS2_MIN_BLOCKSIZE;
763 /* check block zero for old format */
764 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
769 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
770 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
771 mlog(ML_ERROR, "incompatible version: %u.%u\n",
772 hdr->major_version, hdr->minor_version);
775 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
776 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
777 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
784 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
785 "upgraded before mounting with ocfs v2\n");
790 * Now check at magic offset for 512, 1024, 2048, 4096
791 * blocksizes. 4096 is the maximum blocksize because it is
792 * the minimum clustersize.
795 for (blksize = *sector_size;
796 blksize <= OCFS2_MAX_BLOCKSIZE;
798 tmpstat = ocfs2_get_sector(sb, bh,
799 OCFS2_SUPER_BLOCK_BLKNO,
806 di = (struct ocfs2_dinode *) (*bh)->b_data;
807 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
808 spin_lock_init(&stats->b_lock);
809 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
814 if (tmpstat != -EAGAIN) {
824 static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
826 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
828 if (osb->s_mount_opt & hb_enabled) {
829 if (ocfs2_mount_local(osb)) {
830 mlog(ML_ERROR, "Cannot heartbeat on a locally "
831 "mounted device.\n");
834 if (ocfs2_userspace_stack(osb)) {
835 mlog(ML_ERROR, "Userspace stack expected, but "
836 "o2cb heartbeat arguments passed to mount\n");
839 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
840 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
841 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
842 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
843 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
848 if (!(osb->s_mount_opt & hb_enabled)) {
849 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
850 !ocfs2_userspace_stack(osb)) {
851 mlog(ML_ERROR, "Heartbeat has to be started to mount "
852 "a read-write clustered device.\n");
861 * If we're using a userspace stack, mount should have passed
862 * a name that matches the disk. If not, mount should not
863 * have passed a stack.
865 static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
866 struct mount_options *mopt)
868 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
870 "cluster stack passed to mount, but this filesystem "
871 "does not support it\n");
875 if (ocfs2_userspace_stack(osb) &&
876 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
877 OCFS2_STACK_LABEL_LEN)) {
879 "cluster stack passed to mount (\"%s\") does not "
880 "match the filesystem (\"%s\")\n",
882 osb->osb_cluster_stack);
889 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
892 struct super_block *sb = osb->sb;
893 unsigned int feature[OCFS2_MAXQUOTAS] = {
894 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
895 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
898 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
899 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
902 status = dquot_resume(sb, type);
904 struct ocfs2_mem_dqinfo *oinfo;
906 /* Cancel periodic syncing before suspending */
907 oinfo = sb_dqinfo(sb, type)->dqi_priv;
908 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
909 status = dquot_suspend(sb, type);
915 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
916 "remount (error = %d).\n", status);
920 static int ocfs2_enable_quotas(struct ocfs2_super *osb)
922 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
923 struct super_block *sb = osb->sb;
924 unsigned int feature[OCFS2_MAXQUOTAS] = {
925 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
926 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
927 unsigned int ino[OCFS2_MAXQUOTAS] = {
928 LOCAL_USER_QUOTA_SYSTEM_INODE,
929 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
933 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
934 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
935 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
937 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
943 status = dquot_enable(inode[type], type, QFMT_OCFS2,
944 DQUOT_USAGE_ENABLED);
949 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
953 ocfs2_disable_quotas(osb);
954 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
960 static void ocfs2_disable_quotas(struct ocfs2_super *osb)
964 struct super_block *sb = osb->sb;
965 struct ocfs2_mem_dqinfo *oinfo;
967 /* We mostly ignore errors in this function because there's not much
968 * we can do when we see them */
969 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
970 if (!sb_has_quota_loaded(sb, type))
972 oinfo = sb_dqinfo(sb, type)->dqi_priv;
973 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
974 inode = igrab(sb->s_dquot.files[type]);
975 /* Turn off quotas. This will remove all dquot structures from
976 * memory and so they will be automatically synced to global
978 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
979 DQUOT_LIMITS_ENABLED);
986 static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
989 int status, sector_size;
990 struct mount_options parsed_options;
991 struct inode *inode = NULL;
992 struct ocfs2_super *osb = NULL;
993 struct buffer_head *bh = NULL;
995 struct ocfs2_blockcheck_stats stats;
997 trace_ocfs2_fill_super(sb, data, silent);
999 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
1001 goto read_super_error;
1004 /* probe for superblock */
1005 status = ocfs2_sb_probe(sb, &bh, §or_size, &stats);
1007 mlog(ML_ERROR, "superblock probe failed!\n");
1008 goto read_super_error;
1011 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
1015 goto read_super_error;
1020 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1022 goto read_super_error;
1024 osb->s_mount_opt = parsed_options.mount_opt;
1025 osb->s_atime_quantum = parsed_options.atime_quantum;
1026 osb->preferred_slot = parsed_options.slot;
1027 osb->osb_commit_interval = parsed_options.commit_interval;
1029 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
1030 osb->osb_resv_level = parsed_options.resv_level;
1031 osb->osb_dir_resv_level = parsed_options.resv_level;
1032 if (parsed_options.dir_resv_level == -1)
1033 osb->osb_dir_resv_level = parsed_options.resv_level;
1035 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
1037 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1039 goto read_super_error;
1041 sb->s_magic = OCFS2_SUPER_MAGIC;
1043 sb->s_flags = (sb->s_flags & ~(SB_POSIXACL | SB_NOSEC)) |
1044 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? SB_POSIXACL : 0);
1046 /* Hard readonly mode only if: bdev_read_only, SB_RDONLY,
1048 if (bdev_read_only(sb->s_bdev)) {
1049 if (!sb_rdonly(sb)) {
1051 mlog(ML_ERROR, "Readonly device detected but readonly "
1052 "mount was not specified.\n");
1053 goto read_super_error;
1056 /* You should not be able to start a local heartbeat
1057 * on a readonly device. */
1058 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1060 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1062 goto read_super_error;
1065 status = ocfs2_check_journals_nolocks(osb);
1067 if (status == -EROFS)
1068 mlog(ML_ERROR, "Recovery required on readonly "
1069 "file system, but write access is "
1073 goto read_super_error;
1076 ocfs2_set_ro_flag(osb, 1);
1078 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1079 "Cluster services will not be used for this mount. "
1080 "Recovery will be skipped.\n", osb->dev_str);
1083 if (!ocfs2_is_hard_readonly(osb)) {
1085 ocfs2_set_ro_flag(osb, 0);
1088 status = ocfs2_verify_heartbeat(osb);
1091 goto read_super_error;
1094 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1095 ocfs2_debugfs_root);
1096 if (!osb->osb_debug_root) {
1098 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1099 goto read_super_error;
1102 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1103 osb->osb_debug_root,
1105 &ocfs2_osb_debug_fops);
1106 if (!osb->osb_ctxt) {
1109 goto read_super_error;
1112 if (ocfs2_meta_ecc(osb)) {
1113 status = ocfs2_blockcheck_stats_debugfs_install(
1114 &osb->osb_ecc_stats,
1115 osb->osb_debug_root);
1118 "Unable to create blockcheck statistics "
1120 goto read_super_error;
1124 status = ocfs2_mount_volume(sb);
1126 goto read_super_error;
1128 if (osb->root_inode)
1129 inode = igrab(osb->root_inode);
1134 goto read_super_error;
1137 root = d_make_root(inode);
1141 goto read_super_error;
1146 ocfs2_complete_mount_recovery(osb);
1148 osb->osb_dev_kset = kset_create_and_add(sb->s_id, NULL,
1150 if (!osb->osb_dev_kset) {
1152 mlog(ML_ERROR, "Unable to create device kset %s.\n", sb->s_id);
1153 goto read_super_error;
1156 /* Create filecheck sysfs related directories/files at
1157 * /sys/fs/ocfs2/<devname>/filecheck */
1158 if (ocfs2_filecheck_create_sysfs(osb)) {
1160 mlog(ML_ERROR, "Unable to create filecheck sysfs directory at "
1161 "/sys/fs/ocfs2/%s/filecheck.\n", sb->s_id);
1162 goto read_super_error;
1165 if (ocfs2_mount_local(osb))
1166 snprintf(nodestr, sizeof(nodestr), "local");
1168 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1170 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
1171 "with %s data mode.\n",
1172 osb->dev_str, nodestr, osb->slot_num,
1173 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1176 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1177 wake_up(&osb->osb_mount_event);
1179 /* Now we can initialize quotas because we can afford to wait
1180 * for cluster locks recovery now. That also means that truncation
1181 * log recovery can happen but that waits for proper quota setup */
1182 if (!sb_rdonly(sb)) {
1183 status = ocfs2_enable_quotas(osb);
1185 /* We have to err-out specially here because
1186 * s_root is already set */
1188 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1189 wake_up(&osb->osb_mount_event);
1194 ocfs2_complete_quota_recovery(osb);
1196 /* Now we wake up again for processes waiting for quotas */
1197 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1198 wake_up(&osb->osb_mount_event);
1200 /* Start this when the mount is almost sure of being successful */
1201 ocfs2_orphan_scan_start(osb);
1212 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1213 wake_up(&osb->osb_mount_event);
1214 ocfs2_dismount_volume(sb, 1);
1220 static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
1222 const char *dev_name,
1225 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
1228 static struct file_system_type ocfs2_fs_type = {
1229 .owner = THIS_MODULE,
1231 .mount = ocfs2_mount,
1232 .kill_sb = kill_block_super,
1233 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
1236 MODULE_ALIAS_FS("ocfs2");
1238 static int ocfs2_check_set_options(struct super_block *sb,
1239 struct mount_options *options)
1241 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1242 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1243 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1244 mlog(ML_ERROR, "User quotas were requested, but this "
1245 "filesystem does not have the feature enabled.\n");
1248 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1249 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1250 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1251 mlog(ML_ERROR, "Group quotas were requested, but this "
1252 "filesystem does not have the feature enabled.\n");
1255 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1256 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1257 mlog(ML_ERROR, "ACL support requested but extended attributes "
1258 "feature is not enabled\n");
1261 /* No ACL setting specified? Use XATTR feature... */
1262 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1263 OCFS2_MOUNT_NO_POSIX_ACL))) {
1264 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1265 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1267 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1272 static int ocfs2_parse_options(struct super_block *sb,
1274 struct mount_options *mopt,
1277 int status, user_stack = 0;
1281 substring_t args[MAX_OPT_ARGS];
1283 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
1285 mopt->commit_interval = 0;
1286 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
1287 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1288 mopt->slot = OCFS2_INVALID_SLOT;
1289 mopt->localalloc_opt = -1;
1290 mopt->cluster_stack[0] = '\0';
1291 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
1292 mopt->dir_resv_level = -1;
1299 while ((p = strsep(&options, ",")) != NULL) {
1303 token = match_token(p, tokens, args);
1306 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
1309 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1312 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
1315 if (match_int(&args[0], &option)) {
1320 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
1322 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
1325 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
1328 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
1331 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1332 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1333 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
1336 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1337 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1338 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_ROFS;
1341 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1342 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1343 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_CONT;
1345 case Opt_data_ordered:
1346 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
1348 case Opt_data_writeback:
1349 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
1351 case Opt_user_xattr:
1352 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1354 case Opt_nouser_xattr:
1355 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1357 case Opt_atime_quantum:
1358 if (match_int(&args[0], &option)) {
1363 mopt->atime_quantum = option;
1366 if (match_int(&args[0], &option)) {
1371 mopt->slot = (s16)option;
1374 if (match_int(&args[0], &option)) {
1381 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
1382 mopt->commit_interval = HZ * option;
1384 case Opt_localalloc:
1385 if (match_int(&args[0], &option)) {
1390 mopt->localalloc_opt = option;
1392 case Opt_localflocks:
1394 * Changing this during remount could race
1395 * flock() requests, or "unbalance" existing
1396 * ones (e.g., a lock is taken in one mode but
1397 * dropped in the other). If users care enough
1398 * to flip locking modes during remount, we
1399 * could add a "local" flag to individual
1400 * flock structures for proper tracking of
1404 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1407 /* Check both that the option we were passed
1408 * is of the right length and that it is a proper
1409 * string of the right length.
1411 if (((args[0].to - args[0].from) !=
1412 OCFS2_STACK_LABEL_LEN) ||
1413 (strnlen(args[0].from,
1414 OCFS2_STACK_LABEL_LEN) !=
1415 OCFS2_STACK_LABEL_LEN)) {
1417 "Invalid cluster_stack option\n");
1421 memcpy(mopt->cluster_stack, args[0].from,
1422 OCFS2_STACK_LABEL_LEN);
1423 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
1425 * Open code the memcmp here as we don't have
1427 * ocfs2_userspace_stack().
1429 if (memcmp(mopt->cluster_stack,
1430 OCFS2_CLASSIC_CLUSTER_STACK,
1431 OCFS2_STACK_LABEL_LEN))
1435 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1438 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1441 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1443 case Opt_coherency_buffered:
1444 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1446 case Opt_coherency_full:
1447 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1450 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1451 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
1454 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1455 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1457 case Opt_resv_level:
1460 if (match_int(&args[0], &option)) {
1464 if (option >= OCFS2_MIN_RESV_LEVEL &&
1465 option < OCFS2_MAX_RESV_LEVEL)
1466 mopt->resv_level = option;
1468 case Opt_dir_resv_level:
1471 if (match_int(&args[0], &option)) {
1475 if (option >= OCFS2_MIN_RESV_LEVEL &&
1476 option < OCFS2_MAX_RESV_LEVEL)
1477 mopt->dir_resv_level = option;
1479 case Opt_journal_async_commit:
1480 mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
1484 "Unrecognized mount option \"%s\" "
1485 "or missing value\n", p);
1491 if (user_stack == 0) {
1492 /* Ensure only one heartbeat mode */
1493 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1494 OCFS2_MOUNT_HB_GLOBAL |
1495 OCFS2_MOUNT_HB_NONE);
1496 if (hweight32(tmp) != 1) {
1497 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1509 static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
1511 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
1512 unsigned long opts = osb->s_mount_opt;
1513 unsigned int local_alloc_megs;
1515 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1516 seq_printf(s, ",_netdev");
1517 if (opts & OCFS2_MOUNT_HB_LOCAL)
1518 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1520 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1522 seq_printf(s, ",%s", OCFS2_HB_NONE);
1524 if (opts & OCFS2_MOUNT_NOINTR)
1525 seq_printf(s, ",nointr");
1527 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1528 seq_printf(s, ",data=writeback");
1530 seq_printf(s, ",data=ordered");
1532 if (opts & OCFS2_MOUNT_BARRIER)
1533 seq_printf(s, ",barrier=1");
1535 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1536 seq_printf(s, ",errors=panic");
1537 else if (opts & OCFS2_MOUNT_ERRORS_CONT)
1538 seq_printf(s, ",errors=continue");
1540 seq_printf(s, ",errors=remount-ro");
1542 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1543 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1545 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
1547 if (osb->osb_commit_interval)
1548 seq_printf(s, ",commit=%u",
1549 (unsigned) (osb->osb_commit_interval / HZ));
1551 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
1552 if (local_alloc_megs != ocfs2_la_default_mb(osb))
1553 seq_printf(s, ",localalloc=%d", local_alloc_megs);
1555 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1556 seq_printf(s, ",localflocks,");
1558 if (osb->osb_cluster_stack[0])
1559 seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack,
1560 OCFS2_STACK_LABEL_LEN);
1561 if (opts & OCFS2_MOUNT_USRQUOTA)
1562 seq_printf(s, ",usrquota");
1563 if (opts & OCFS2_MOUNT_GRPQUOTA)
1564 seq_printf(s, ",grpquota");
1566 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1567 seq_printf(s, ",coherency=buffered");
1569 seq_printf(s, ",coherency=full");
1571 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1572 seq_printf(s, ",nouser_xattr");
1574 seq_printf(s, ",user_xattr");
1576 if (opts & OCFS2_MOUNT_INODE64)
1577 seq_printf(s, ",inode64");
1579 if (opts & OCFS2_MOUNT_POSIX_ACL)
1580 seq_printf(s, ",acl");
1582 seq_printf(s, ",noacl");
1584 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1585 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1587 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1588 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1590 if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
1591 seq_printf(s, ",journal_async_commit");
1596 static int __init ocfs2_init(void)
1600 status = init_ocfs2_uptodate_cache();
1604 status = ocfs2_initialize_mem_caches();
1608 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1609 if (!ocfs2_debugfs_root) {
1611 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
1615 ocfs2_set_locking_protocol();
1617 status = register_quota_format(&ocfs2_quota_format);
1620 status = register_filesystem(&ocfs2_fs_type);
1624 unregister_quota_format(&ocfs2_quota_format);
1626 debugfs_remove(ocfs2_debugfs_root);
1627 ocfs2_free_mem_caches();
1629 exit_ocfs2_uptodate_cache();
1635 static void __exit ocfs2_exit(void)
1637 unregister_quota_format(&ocfs2_quota_format);
1639 debugfs_remove(ocfs2_debugfs_root);
1641 ocfs2_free_mem_caches();
1643 unregister_filesystem(&ocfs2_fs_type);
1645 exit_ocfs2_uptodate_cache();
1648 static void ocfs2_put_super(struct super_block *sb)
1650 trace_ocfs2_put_super(sb);
1652 ocfs2_sync_blockdev(sb);
1653 ocfs2_dismount_volume(sb, 0);
1656 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
1658 struct ocfs2_super *osb;
1659 u32 numbits, freebits;
1661 struct ocfs2_dinode *bm_lock;
1662 struct buffer_head *bh = NULL;
1663 struct inode *inode = NULL;
1665 trace_ocfs2_statfs(dentry->d_sb, buf);
1667 osb = OCFS2_SB(dentry->d_sb);
1669 inode = ocfs2_get_system_file_inode(osb,
1670 GLOBAL_BITMAP_SYSTEM_INODE,
1671 OCFS2_INVALID_SLOT);
1673 mlog(ML_ERROR, "failed to get bitmap inode\n");
1678 status = ocfs2_inode_lock(inode, &bh, 0);
1684 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1686 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1687 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1689 buf->f_type = OCFS2_SUPER_MAGIC;
1690 buf->f_bsize = dentry->d_sb->s_blocksize;
1691 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1692 buf->f_blocks = ((sector_t) numbits) *
1693 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1694 buf->f_bfree = ((sector_t) freebits) *
1695 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1696 buf->f_bavail = buf->f_bfree;
1697 buf->f_files = numbits;
1698 buf->f_ffree = freebits;
1699 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1701 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1702 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
1706 ocfs2_inode_unlock(inode, 0);
1717 static void ocfs2_inode_init_once(void *data)
1719 struct ocfs2_inode_info *oi = data;
1722 oi->ip_open_count = 0;
1723 spin_lock_init(&oi->ip_lock);
1724 ocfs2_extent_map_init(&oi->vfs_inode);
1725 INIT_LIST_HEAD(&oi->ip_io_markers);
1726 INIT_LIST_HEAD(&oi->ip_unwritten_list);
1727 oi->ip_dir_start_lookup = 0;
1728 init_rwsem(&oi->ip_alloc_sem);
1729 init_rwsem(&oi->ip_xattr_sem);
1730 mutex_init(&oi->ip_io_mutex);
1732 oi->ip_blkno = 0ULL;
1733 oi->ip_clusters = 0;
1735 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1737 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
1738 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
1739 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
1741 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
1742 &ocfs2_inode_caching_ops);
1744 inode_init_once(&oi->vfs_inode);
1747 static int ocfs2_initialize_mem_caches(void)
1749 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
1750 sizeof(struct ocfs2_inode_info),
1752 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1753 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
1754 ocfs2_inode_init_once);
1755 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1756 sizeof(struct ocfs2_dquot),
1758 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1761 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1762 sizeof(struct ocfs2_quota_chunk),
1764 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1766 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1767 !ocfs2_qf_chunk_cachep) {
1768 kmem_cache_destroy(ocfs2_inode_cachep);
1769 kmem_cache_destroy(ocfs2_dquot_cachep);
1770 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1777 static void ocfs2_free_mem_caches(void)
1780 * Make sure all delayed rcu free inodes are flushed before we
1784 kmem_cache_destroy(ocfs2_inode_cachep);
1785 ocfs2_inode_cachep = NULL;
1787 kmem_cache_destroy(ocfs2_dquot_cachep);
1788 ocfs2_dquot_cachep = NULL;
1790 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1791 ocfs2_qf_chunk_cachep = NULL;
1794 static int ocfs2_get_sector(struct super_block *sb,
1795 struct buffer_head **bh,
1799 if (!sb_set_blocksize(sb, sect_size)) {
1800 mlog(ML_ERROR, "unable to set blocksize\n");
1804 *bh = sb_getblk(sb, block);
1806 mlog_errno(-ENOMEM);
1810 if (!buffer_dirty(*bh))
1811 clear_buffer_uptodate(*bh);
1813 ll_rw_block(REQ_OP_READ, 0, 1, bh);
1814 wait_on_buffer(*bh);
1815 if (!buffer_uptodate(*bh)) {
1825 static int ocfs2_mount_volume(struct super_block *sb)
1828 int unlock_super = 0;
1829 struct ocfs2_super *osb = OCFS2_SB(sb);
1831 if (ocfs2_is_hard_readonly(osb))
1834 mutex_init(&osb->obs_trim_fs_mutex);
1836 status = ocfs2_dlm_init(osb);
1839 if (status == -EBADR && ocfs2_userspace_stack(osb))
1840 mlog(ML_ERROR, "couldn't mount because cluster name on"
1841 " disk does not match the running cluster name.\n");
1845 status = ocfs2_super_lock(osb, 1);
1852 /* This will load up the node map and add ourselves to it. */
1853 status = ocfs2_find_slot(osb);
1859 /* load all node-local system inodes */
1860 status = ocfs2_init_local_system_inodes(osb);
1866 status = ocfs2_check_volume(osb);
1872 status = ocfs2_truncate_log_init(osb);
1878 ocfs2_super_unlock(osb, 1);
1883 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1885 int tmp, hangup_needed = 0;
1886 struct ocfs2_super *osb = NULL;
1889 trace_ocfs2_dismount_volume(sb);
1895 /* Remove file check sysfs related directores/files,
1896 * and wait for the pending file check operations */
1897 ocfs2_filecheck_remove_sysfs(osb);
1899 kset_unregister(osb->osb_dev_kset);
1901 debugfs_remove(osb->osb_ctxt);
1903 /* Orphan scan should be stopped as early as possible */
1904 ocfs2_orphan_scan_stop(osb);
1906 ocfs2_disable_quotas(osb);
1908 /* All dquots should be freed by now */
1909 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1910 /* Wait for worker to be done with the work structure in osb */
1911 cancel_work_sync(&osb->dquot_drop_work);
1913 ocfs2_shutdown_local_alloc(osb);
1915 ocfs2_truncate_log_shutdown(osb);
1917 /* This will disable recovery and flush any recovery work. */
1918 ocfs2_recovery_exit(osb);
1920 ocfs2_journal_shutdown(osb);
1922 ocfs2_sync_blockdev(sb);
1924 ocfs2_purge_refcount_trees(osb);
1926 /* No cluster connection means we've failed during mount, so skip
1927 * all the steps which depended on that to complete. */
1929 tmp = ocfs2_super_lock(osb, 1);
1936 if (osb->slot_num != OCFS2_INVALID_SLOT)
1937 ocfs2_put_slot(osb);
1940 ocfs2_super_unlock(osb, 1);
1942 ocfs2_release_system_inodes(osb);
1945 * If we're dismounting due to mount error, mount.ocfs2 will clean
1946 * up heartbeat. If we're a local mount, there is no heartbeat.
1947 * If we failed before we got a uuid_str yet, we can't stop
1948 * heartbeat. Otherwise, do it.
1950 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1951 !ocfs2_is_hard_readonly(osb))
1955 ocfs2_dlm_shutdown(osb, hangup_needed);
1957 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
1958 debugfs_remove(osb->osb_debug_root);
1961 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
1963 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1965 if (ocfs2_mount_local(osb))
1966 snprintf(nodestr, sizeof(nodestr), "local");
1968 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1970 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1971 osb->dev_str, nodestr);
1973 ocfs2_delete_osb(osb);
1976 sb->s_fs_info = NULL;
1979 static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1980 unsigned uuid_bytes)
1985 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1987 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
1988 if (osb->uuid_str == NULL)
1991 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
1992 /* print with null */
1993 ret = snprintf(ptr, 3, "%02X", uuid[i]);
1994 if (ret != 2) /* drop super cleans up */
1996 /* then only advance past the last char */
2003 /* Make sure entire volume is addressable by our journal. Requires
2004 osb_clusters_at_boot to be valid and for the journal to have been
2005 initialized by ocfs2_journal_init(). */
2006 static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2010 ocfs2_clusters_to_blocks(osb->sb,
2011 osb->osb_clusters_at_boot) - 1;
2013 /* 32-bit block number is always OK. */
2014 if (max_block <= (u32)~0ULL)
2017 /* Volume is "huge", so see if our journal is new enough to
2019 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2020 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2021 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2022 JBD2_FEATURE_INCOMPAT_64BIT))) {
2023 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2024 "Enable the 'block64' journal option with tunefs.ocfs2");
2033 static int ocfs2_initialize_super(struct super_block *sb,
2034 struct buffer_head *bh,
2036 struct ocfs2_blockcheck_stats *stats)
2039 int i, cbits, bbits;
2040 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
2041 struct inode *inode = NULL;
2042 struct ocfs2_journal *journal;
2043 struct ocfs2_super *osb;
2046 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
2053 sb->s_fs_info = osb;
2054 sb->s_op = &ocfs2_sops;
2055 sb->s_d_op = &ocfs2_dentry_ops;
2056 sb->s_export_op = &ocfs2_export_ops;
2057 sb->s_qcop = &dquot_quotactl_sysfile_ops;
2058 sb->dq_op = &ocfs2_quota_operations;
2059 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
2060 sb->s_xattr = ocfs2_xattr_handlers;
2061 sb->s_time_gran = 1;
2062 sb->s_flags |= SB_NOATIME;
2063 /* this is needed to support O_LARGEFILE */
2064 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2065 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2066 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
2067 memcpy(&sb->s_uuid, di->id2.i_super.s_uuid,
2068 sizeof(di->id2.i_super.s_uuid));
2070 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2072 for (i = 0; i < 3; i++)
2073 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2074 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2077 osb->s_sectsize_bits = blksize_bits(sector_size);
2078 BUG_ON(!osb->s_sectsize_bits);
2080 spin_lock_init(&osb->dc_task_lock);
2081 init_waitqueue_head(&osb->dc_event);
2082 osb->dc_work_sequence = 0;
2083 osb->dc_wake_sequence = 0;
2084 INIT_LIST_HEAD(&osb->blocked_lock_list);
2085 osb->blocked_lock_count = 0;
2086 spin_lock_init(&osb->osb_lock);
2087 spin_lock_init(&osb->osb_xattr_lock);
2088 ocfs2_init_steal_slots(osb);
2090 mutex_init(&osb->system_file_mutex);
2092 atomic_set(&osb->alloc_stats.moves, 0);
2093 atomic_set(&osb->alloc_stats.local_data, 0);
2094 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2095 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2096 atomic_set(&osb->alloc_stats.bg_extends, 0);
2098 /* Copy the blockcheck stats from the superblock probe */
2099 osb->osb_ecc_stats = *stats;
2101 ocfs2_init_node_maps(osb);
2103 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2104 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2106 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2107 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2108 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2114 ocfs2_orphan_scan_init(osb);
2116 status = ocfs2_recovery_init(osb);
2118 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2123 init_waitqueue_head(&osb->checkpoint_event);
2125 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2127 osb->slot_num = OCFS2_INVALID_SLOT;
2129 osb->s_xattr_inline_size = le16_to_cpu(
2130 di->id2.i_super.s_xattr_inline_size);
2132 osb->local_alloc_state = OCFS2_LA_UNUSED;
2133 osb->local_alloc_bh = NULL;
2134 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
2136 init_waitqueue_head(&osb->osb_mount_event);
2138 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2144 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2145 if (!osb->vol_label) {
2146 mlog(ML_ERROR, "unable to alloc vol label\n");
2151 osb->slot_recovery_generations =
2152 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2154 if (!osb->slot_recovery_generations) {
2160 init_waitqueue_head(&osb->osb_wipe_event);
2161 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2162 sizeof(*osb->osb_orphan_wipes),
2164 if (!osb->osb_orphan_wipes) {
2170 osb->osb_rf_lock_tree = RB_ROOT;
2172 osb->s_feature_compat =
2173 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2174 osb->s_feature_ro_compat =
2175 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2176 osb->s_feature_incompat =
2177 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2179 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2180 mlog(ML_ERROR, "couldn't mount because of unsupported "
2181 "optional features (%x).\n", i);
2185 if (!sb_rdonly(osb->sb) && (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
2186 mlog(ML_ERROR, "couldn't mount RDWR because of "
2187 "unsupported optional features (%x).\n", i);
2192 if (ocfs2_clusterinfo_valid(osb)) {
2193 osb->osb_stackflags =
2194 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
2195 strlcpy(osb->osb_cluster_stack,
2196 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
2197 OCFS2_STACK_LABEL_LEN + 1);
2198 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2200 "couldn't mount because of an invalid "
2201 "cluster stack label (%s) \n",
2202 osb->osb_cluster_stack);
2206 strlcpy(osb->osb_cluster_name,
2207 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
2208 OCFS2_CLUSTER_NAME_LEN + 1);
2210 /* The empty string is identical with classic tools that
2211 * don't know about s_cluster_info. */
2212 osb->osb_cluster_stack[0] = '\0';
2215 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2218 * This should be done in ocfs2_journal_init(), but unknown
2219 * ordering issues will cause the filesystem to crash.
2220 * If anyone wants to figure out what part of the code
2221 * refers to osb->journal before ocfs2_journal_init() is run,
2224 /* initialize our journal structure */
2226 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
2228 mlog(ML_ERROR, "unable to alloc journal\n");
2232 osb->journal = journal;
2233 journal->j_osb = osb;
2235 atomic_set(&journal->j_num_trans, 0);
2236 init_rwsem(&journal->j_trans_barrier);
2237 init_waitqueue_head(&journal->j_checkpointed);
2238 spin_lock_init(&journal->j_lock);
2239 journal->j_trans_id = (unsigned long) 1;
2240 INIT_LIST_HEAD(&journal->j_la_cleanups);
2241 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
2242 journal->j_state = OCFS2_JOURNAL_FREE;
2244 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2245 init_llist_head(&osb->dquot_drop_list);
2247 /* get some pseudo constants for clustersize bits */
2248 osb->s_clustersize_bits =
2249 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2250 osb->s_clustersize = 1 << osb->s_clustersize_bits;
2252 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2253 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2254 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2255 osb->s_clustersize);
2260 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2261 le32_to_cpu(di->i_clusters));
2263 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2266 mlog(ML_ERROR, "Volume too large "
2267 "to mount safely on this system");
2272 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2273 sizeof(di->id2.i_super.s_uuid))) {
2274 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2279 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2280 OCFS2_MAX_VOL_LABEL_LEN);
2281 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2282 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2283 osb->first_cluster_group_blkno =
2284 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2285 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
2286 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2287 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2288 (unsigned long long)osb->root_blkno,
2289 (unsigned long long)osb->system_dir_blkno,
2290 osb->s_clustersize_bits);
2292 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2293 if (!osb->osb_dlm_debug) {
2299 atomic_set(&osb->vol_state, VOLUME_INIT);
2301 /* load root, system_dir, and all global system inodes */
2302 status = ocfs2_init_global_system_inodes(osb);
2311 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2312 OCFS2_INVALID_SLOT);
2319 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
2320 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
2323 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2324 osb->s_feature_incompat) * 8;
2326 status = ocfs2_init_slot_info(osb);
2331 cleancache_init_shared_fs(sb);
2333 osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
2334 if (!osb->ocfs2_wq) {
2344 * will return: -EAGAIN if it is ok to keep searching for superblocks
2345 * -EINVAL if there is a bad superblock
2348 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2349 struct buffer_head *bh,
2351 struct ocfs2_blockcheck_stats *stats)
2353 int status = -EAGAIN;
2355 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2356 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
2357 /* We have to do a raw check of the feature here */
2358 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2359 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2360 status = ocfs2_block_check_validate(bh->b_data,
2368 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2369 mlog(ML_ERROR, "found superblock with incorrect block "
2370 "size: found %u, should be %u\n",
2371 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2373 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2374 OCFS2_MAJOR_REV_LEVEL ||
2375 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2376 OCFS2_MINOR_REV_LEVEL) {
2377 mlog(ML_ERROR, "found superblock with bad version: "
2378 "found %u.%u, should be %u.%u\n",
2379 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2380 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2381 OCFS2_MAJOR_REV_LEVEL,
2382 OCFS2_MINOR_REV_LEVEL);
2383 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2384 mlog(ML_ERROR, "bad block number on superblock: "
2385 "found %llu, should be %llu\n",
2386 (unsigned long long)le64_to_cpu(di->i_blkno),
2387 (unsigned long long)bh->b_blocknr);
2388 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2389 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2390 mlog(ML_ERROR, "bad cluster size found: %u\n",
2391 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2392 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2393 mlog(ML_ERROR, "bad root_blkno: 0\n");
2394 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2395 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2396 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2398 "Superblock slots found greater than file system "
2399 "maximum: found %u, max %u\n",
2400 le16_to_cpu(di->id2.i_super.s_max_slots),
2409 if (status && status != -EAGAIN)
2414 static int ocfs2_check_volume(struct ocfs2_super *osb)
2419 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2423 /* Init our journal object. */
2424 status = ocfs2_journal_init(osb->journal, &dirty);
2426 mlog(ML_ERROR, "Could not initialize journal!\n");
2430 /* Now that journal has been initialized, check to make sure
2431 entire volume is addressable. */
2432 status = ocfs2_journal_addressable(osb);
2436 /* If the journal was unmounted cleanly then we don't want to
2437 * recover anything. Otherwise, journal_load will do that
2438 * dirty work for us :) */
2440 status = ocfs2_journal_wipe(osb->journal, 0);
2446 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2447 "unmounted cleanly, recovering it.\n", osb->dev_str);
2450 local = ocfs2_mount_local(osb);
2452 /* will play back anything left in the journal. */
2453 status = ocfs2_journal_load(osb->journal, local, dirty);
2455 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2459 if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
2460 jbd2_journal_set_features(osb->journal->j_journal,
2461 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2462 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2464 jbd2_journal_clear_features(osb->journal->j_journal,
2465 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2466 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2469 /* recover my local alloc if we didn't unmount cleanly. */
2470 status = ocfs2_begin_local_alloc_recovery(osb,
2477 /* we complete the recovery process after we've marked
2478 * ourselves as mounted. */
2481 status = ocfs2_load_local_alloc(osb);
2488 /* Recovery will be completed after we've mounted the
2489 * rest of the volume. */
2490 osb->local_alloc_copy = local_alloc;
2494 /* go through each journal, trylock it and if you get the
2495 * lock, and it's marked as dirty, set the bit in the recover
2496 * map and launch a recovery thread for it. */
2497 status = ocfs2_mark_dead_nodes(osb);
2503 status = ocfs2_compute_replay_slots(osb);
2516 * The routine gets called from dismount or close whenever a dismount on
2517 * volume is requested and the osb open count becomes 1.
2518 * It will remove the osb from the global list and also free up all the
2519 * initialized resources and fileobject.
2521 static void ocfs2_delete_osb(struct ocfs2_super *osb)
2523 /* This function assumes that the caller has the main osb resource */
2525 /* ocfs2_initializer_super have already created this workqueue */
2527 destroy_workqueue(osb->ocfs2_wq);
2529 ocfs2_free_slot_info(osb);
2531 kfree(osb->osb_orphan_wipes);
2532 kfree(osb->slot_recovery_generations);
2534 * This belongs in journal shutdown, but because we have to
2535 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2538 kfree(osb->journal);
2539 kfree(osb->local_alloc_copy);
2540 kfree(osb->uuid_str);
2541 kfree(osb->vol_label);
2542 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2543 memset(osb, 0, sizeof(struct ocfs2_super));
2546 /* Depending on the mount option passed, perform one of the following:
2547 * Put OCFS2 into a readonly state (default)
2548 * Return EIO so that only the process errs
2549 * Fix the error as if fsck.ocfs2 -y
2552 static int ocfs2_handle_error(struct super_block *sb)
2554 struct ocfs2_super *osb = OCFS2_SB(sb);
2557 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2558 pr_crit("On-disk corruption discovered. "
2559 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
2561 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) {
2562 panic("OCFS2: (device %s): panic forced after error\n",
2564 } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) {
2565 pr_crit("OCFS2: Returning error to the calling process.\n");
2567 } else { /* default option */
2569 if (sb_rdonly(sb) && (ocfs2_is_soft_readonly(osb) || ocfs2_is_hard_readonly(osb)))
2572 pr_crit("OCFS2: File system is now read-only.\n");
2573 sb->s_flags |= SB_RDONLY;
2574 ocfs2_set_ro_flag(osb, 0);
2580 int __ocfs2_error(struct super_block *sb, const char *function,
2581 const char *fmt, ...)
2583 struct va_format vaf;
2586 va_start(args, fmt);
2590 /* Not using mlog here because we want to show the actual
2591 * function the error came from. */
2592 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV",
2593 sb->s_id, function, &vaf);
2597 return ocfs2_handle_error(sb);
2600 /* Handle critical errors. This is intentionally more drastic than
2601 * ocfs2_handle_error, so we only use for things like journal errors,
2603 void __ocfs2_abort(struct super_block *sb, const char *function,
2604 const char *fmt, ...)
2606 struct va_format vaf;
2609 va_start(args, fmt);
2614 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV",
2615 sb->s_id, function, &vaf);
2619 /* We don't have the cluster support yet to go straight to
2620 * hard readonly in here. Until then, we want to keep
2621 * ocfs2_abort() so that we can at least mark critical
2624 * TODO: This should abort the journal and alert other nodes
2625 * that our slot needs recovery. */
2627 /* Force a panic(). This stinks, but it's better than letting
2628 * things continue without having a proper hard readonly
2630 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2631 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
2632 ocfs2_handle_error(sb);
2636 * Void signal blockers, because in-kernel sigprocmask() only fails
2637 * when SIG_* is wrong.
2639 void ocfs2_block_signals(sigset_t *oldset)
2644 sigfillset(&blocked);
2645 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2649 void ocfs2_unblock_signals(sigset_t *oldset)
2651 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2655 module_init(ocfs2_init);
2656 module_exit(ocfs2_exit);