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"
73 #include "refcounttree.h"
76 #include "buffer_head_io.h"
78 static struct kmem_cache *ocfs2_inode_cachep;
79 struct kmem_cache *ocfs2_dquot_cachep;
80 struct kmem_cache *ocfs2_qf_chunk_cachep;
82 /* OCFS2 needs to schedule several different types of work which
83 * require cluster locking, disk I/O, recovery waits, etc. Since these
84 * types of work tend to be heavy we avoid using the kernel events
85 * workqueue and schedule on our own. */
86 struct workqueue_struct *ocfs2_wq = NULL;
88 static struct dentry *ocfs2_debugfs_root;
90 MODULE_AUTHOR("Oracle");
91 MODULE_LICENSE("GPL");
92 MODULE_DESCRIPTION("OCFS2 cluster file system");
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 struct dquot **ocfs2_get_dquots(struct inode *inode)
148 return OCFS2_I(inode)->i_dquot;
151 static const struct super_operations ocfs2_sops = {
152 .statfs = ocfs2_statfs,
153 .alloc_inode = ocfs2_alloc_inode,
154 .destroy_inode = ocfs2_destroy_inode,
155 .drop_inode = ocfs2_drop_inode,
156 .evict_inode = ocfs2_evict_inode,
157 .sync_fs = ocfs2_sync_fs,
158 .put_super = ocfs2_put_super,
159 .remount_fs = ocfs2_remount,
160 .show_options = ocfs2_show_options,
161 .quota_read = ocfs2_quota_read,
162 .quota_write = ocfs2_quota_write,
163 .get_dquots = ocfs2_get_dquots,
190 Opt_coherency_buffered,
194 Opt_journal_async_commit,
199 static const match_table_t tokens = {
200 {Opt_barrier, "barrier=%u"},
201 {Opt_err_panic, "errors=panic"},
202 {Opt_err_ro, "errors=remount-ro"},
204 {Opt_nointr, "nointr"},
205 {Opt_hb_none, OCFS2_HB_NONE},
206 {Opt_hb_local, OCFS2_HB_LOCAL},
207 {Opt_hb_global, OCFS2_HB_GLOBAL},
208 {Opt_data_ordered, "data=ordered"},
209 {Opt_data_writeback, "data=writeback"},
210 {Opt_atime_quantum, "atime_quantum=%u"},
211 {Opt_slot, "preferred_slot=%u"},
212 {Opt_commit, "commit=%u"},
213 {Opt_localalloc, "localalloc=%d"},
214 {Opt_localflocks, "localflocks"},
215 {Opt_stack, "cluster_stack=%s"},
216 {Opt_user_xattr, "user_xattr"},
217 {Opt_nouser_xattr, "nouser_xattr"},
218 {Opt_inode64, "inode64"},
220 {Opt_noacl, "noacl"},
221 {Opt_usrquota, "usrquota"},
222 {Opt_grpquota, "grpquota"},
223 {Opt_coherency_buffered, "coherency=buffered"},
224 {Opt_coherency_full, "coherency=full"},
225 {Opt_resv_level, "resv_level=%u"},
226 {Opt_dir_resv_level, "dir_resv_level=%u"},
227 {Opt_journal_async_commit, "journal_async_commit"},
228 {Opt_err_cont, "errors=continue"},
232 #ifdef CONFIG_DEBUG_FS
233 static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
235 struct ocfs2_cluster_connection *cconn = osb->cconn;
236 struct ocfs2_recovery_map *rm = osb->recovery_map;
237 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
241 out += snprintf(buf + out, len - out,
242 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
243 "Device", osb->dev_str, osb->uuid_str,
244 osb->fs_generation, osb->vol_label);
246 out += snprintf(buf + out, len - out,
247 "%10s => State: %d Flags: 0x%lX\n", "Volume",
248 atomic_read(&osb->vol_state), osb->osb_flags);
250 out += snprintf(buf + out, len - out,
251 "%10s => Block: %lu Cluster: %d\n", "Sizes",
252 osb->sb->s_blocksize, osb->s_clustersize);
254 out += snprintf(buf + out, len - out,
255 "%10s => Compat: 0x%X Incompat: 0x%X "
257 "Features", osb->s_feature_compat,
258 osb->s_feature_incompat, osb->s_feature_ro_compat);
260 out += snprintf(buf + out, len - out,
261 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
262 osb->s_mount_opt, osb->s_atime_quantum);
265 out += snprintf(buf + out, len - out,
266 "%10s => Stack: %s Name: %*s "
267 "Version: %d.%d\n", "Cluster",
268 (*osb->osb_cluster_stack == '\0' ?
269 "o2cb" : osb->osb_cluster_stack),
270 cconn->cc_namelen, cconn->cc_name,
271 cconn->cc_version.pv_major,
272 cconn->cc_version.pv_minor);
275 spin_lock_irqsave(&osb->dc_task_lock, flags);
276 out += snprintf(buf + out, len - out,
277 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
278 "WorkSeq: %lu\n", "DownCnvt",
279 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
280 osb->blocked_lock_count, osb->dc_wake_sequence,
281 osb->dc_work_sequence);
282 spin_unlock_irqrestore(&osb->dc_task_lock, flags);
284 spin_lock(&osb->osb_lock);
285 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
287 (osb->recovery_thread_task ?
288 task_pid_nr(osb->recovery_thread_task) : -1));
289 if (rm->rm_used == 0)
290 out += snprintf(buf + out, len - out, " None\n");
292 for (i = 0; i < rm->rm_used; i++)
293 out += snprintf(buf + out, len - out, " %d",
295 out += snprintf(buf + out, len - out, "\n");
297 spin_unlock(&osb->osb_lock);
299 out += snprintf(buf + out, len - out,
300 "%10s => Pid: %d Interval: %lu\n", "Commit",
301 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
302 osb->osb_commit_interval);
304 out += snprintf(buf + out, len - out,
305 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
306 "Journal", osb->journal->j_state,
307 osb->journal->j_trans_id,
308 atomic_read(&osb->journal->j_num_trans));
310 out += snprintf(buf + out, len - out,
311 "%10s => GlobalAllocs: %d LocalAllocs: %d "
312 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
314 atomic_read(&osb->alloc_stats.bitmap_data),
315 atomic_read(&osb->alloc_stats.local_data),
316 atomic_read(&osb->alloc_stats.bg_allocs),
317 atomic_read(&osb->alloc_stats.moves),
318 atomic_read(&osb->alloc_stats.bg_extends));
320 out += snprintf(buf + out, len - out,
321 "%10s => State: %u Descriptor: %llu Size: %u bits "
322 "Default: %u bits\n",
323 "LocalAlloc", osb->local_alloc_state,
324 (unsigned long long)osb->la_last_gd,
325 osb->local_alloc_bits, osb->local_alloc_default_bits);
327 spin_lock(&osb->osb_lock);
328 out += snprintf(buf + out, len - out,
329 "%10s => InodeSlot: %d StolenInodes: %d, "
330 "MetaSlot: %d StolenMeta: %d\n", "Steal",
331 osb->s_inode_steal_slot,
332 atomic_read(&osb->s_num_inodes_stolen),
333 osb->s_meta_steal_slot,
334 atomic_read(&osb->s_num_meta_stolen));
335 spin_unlock(&osb->osb_lock);
337 out += snprintf(buf + out, len - out, "OrphanScan => ");
338 out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
339 os->os_count, os->os_seqno);
340 out += snprintf(buf + out, len - out, " Last Scan: ");
341 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
342 out += snprintf(buf + out, len - out, "Disabled\n");
344 out += snprintf(buf + out, len - out, "%lu seconds ago\n",
345 (get_seconds() - os->os_scantime.tv_sec));
347 out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
348 "Slots", "Num", "RecoGen");
349 for (i = 0; i < osb->max_slots; ++i) {
350 out += snprintf(buf + out, len - out,
351 "%10s %c %3d %10d\n",
353 (i == osb->slot_num ? '*' : ' '),
354 i, osb->slot_recovery_generations[i]);
360 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
362 struct ocfs2_super *osb = inode->i_private;
365 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
369 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
371 file->private_data = buf;
378 static int ocfs2_debug_release(struct inode *inode, struct file *file)
380 kfree(file->private_data);
384 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
385 size_t nbytes, loff_t *ppos)
387 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
388 i_size_read(file->f_mapping->host));
391 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
395 static int ocfs2_debug_release(struct inode *inode, struct file *file)
399 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
400 size_t nbytes, loff_t *ppos)
404 #endif /* CONFIG_DEBUG_FS */
406 static const struct file_operations ocfs2_osb_debug_fops = {
407 .open = ocfs2_osb_debug_open,
408 .release = ocfs2_debug_release,
409 .read = ocfs2_debug_read,
410 .llseek = generic_file_llseek,
413 static int ocfs2_sync_fs(struct super_block *sb, int wait)
417 struct ocfs2_super *osb = OCFS2_SB(sb);
419 if (ocfs2_is_hard_readonly(osb))
423 status = ocfs2_flush_truncate_log(osb);
427 ocfs2_schedule_truncate_log_flush(osb, 0);
430 if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal,
433 jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal,
439 static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
441 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
442 && (ino == USER_QUOTA_SYSTEM_INODE
443 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
445 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
446 && (ino == GROUP_QUOTA_SYSTEM_INODE
447 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
452 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
454 struct inode *new = NULL;
458 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
460 status = PTR_ERR(new);
464 osb->root_inode = new;
466 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
468 status = PTR_ERR(new);
472 osb->sys_root_inode = new;
474 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
475 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
476 if (!ocfs2_need_system_inode(osb, i))
478 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
480 ocfs2_release_system_inodes(osb);
483 /* FIXME: Should ERROR_RO_FS */
484 mlog(ML_ERROR, "Unable to load system inode %d, "
485 "possibly corrupt fs?", i);
488 // the array now has one ref, so drop this one
498 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
500 struct inode *new = NULL;
504 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
505 i < NUM_SYSTEM_INODES;
507 if (!ocfs2_need_system_inode(osb, i))
509 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
511 ocfs2_release_system_inodes(osb);
513 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
514 status, i, osb->slot_num);
517 /* the array now has one ref, so drop this one */
527 static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
532 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
533 inode = osb->global_system_inodes[i];
536 osb->global_system_inodes[i] = NULL;
540 inode = osb->sys_root_inode;
543 osb->sys_root_inode = NULL;
546 inode = osb->root_inode;
549 osb->root_inode = NULL;
552 if (!osb->local_system_inodes)
555 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
556 if (osb->local_system_inodes[i]) {
557 iput(osb->local_system_inodes[i]);
558 osb->local_system_inodes[i] = NULL;
562 kfree(osb->local_system_inodes);
563 osb->local_system_inodes = NULL;
566 /* We're allocating fs objects, use GFP_NOFS */
567 static struct inode *ocfs2_alloc_inode(struct super_block *sb)
569 struct ocfs2_inode_info *oi;
571 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
576 oi->i_datasync_tid = 0;
577 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
579 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
580 return &oi->vfs_inode;
583 static void ocfs2_i_callback(struct rcu_head *head)
585 struct inode *inode = container_of(head, struct inode, i_rcu);
586 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
589 static void ocfs2_destroy_inode(struct inode *inode)
591 call_rcu(&inode->i_rcu, ocfs2_i_callback);
594 static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
597 unsigned int bytes = 1 << cbits;
598 unsigned int trim = bytes;
599 unsigned int bitshift = 32;
602 * i_size and all block offsets in ocfs2 are always 64 bits
603 * wide. i_clusters is 32 bits, in cluster-sized units. So on
604 * 64 bit platforms, cluster size will be the limiting factor.
607 #if BITS_PER_LONG == 32
608 # if defined(CONFIG_LBDAF)
609 BUILD_BUG_ON(sizeof(sector_t) != 8);
611 * We might be limited by page cache size.
613 if (bytes > PAGE_CACHE_SIZE) {
614 bytes = PAGE_CACHE_SIZE;
617 * Shift by 31 here so that we don't get larger than
624 * We are limited by the size of sector_t. Use block size, as
625 * that's what we expose to the VFS.
634 * Trim by a whole cluster when we can actually approach the
635 * on-disk limits. Otherwise we can overflow i_clusters when
636 * an extent start is at the max offset.
638 return (((unsigned long long)bytes) << bitshift) - trim;
641 static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
643 int incompat_features;
645 struct mount_options parsed_options;
646 struct ocfs2_super *osb = OCFS2_SB(sb);
651 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
652 !ocfs2_check_set_options(sb, &parsed_options)) {
657 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
659 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
661 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
665 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
666 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
668 mlog(ML_ERROR, "Cannot change data mode on remount\n");
672 /* Probably don't want this on remount; it might
673 * mess with other nodes */
674 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
675 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
677 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
681 /* We're going to/from readonly mode. */
682 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
683 /* Disable quota accounting before remounting RO */
684 if (*flags & MS_RDONLY) {
685 ret = ocfs2_susp_quotas(osb, 0);
689 /* Lock here so the check of HARD_RO and the potential
690 * setting of SOFT_RO is atomic. */
691 spin_lock(&osb->osb_lock);
692 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
693 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
698 if (*flags & MS_RDONLY) {
699 sb->s_flags |= MS_RDONLY;
700 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
702 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
703 mlog(ML_ERROR, "Cannot remount RDWR "
704 "filesystem due to previous errors.\n");
708 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
709 if (incompat_features) {
710 mlog(ML_ERROR, "Cannot remount RDWR because "
711 "of unsupported optional features "
712 "(%x).\n", incompat_features);
716 sb->s_flags &= ~MS_RDONLY;
717 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
719 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
721 spin_unlock(&osb->osb_lock);
722 /* Enable quota accounting after remounting RW */
723 if (!ret && !(*flags & MS_RDONLY)) {
724 if (sb_any_quota_suspended(sb))
725 ret = ocfs2_susp_quotas(osb, 1);
727 ret = ocfs2_enable_quotas(osb);
729 /* Return back changes... */
730 spin_lock(&osb->osb_lock);
731 sb->s_flags |= MS_RDONLY;
732 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
733 spin_unlock(&osb->osb_lock);
740 /* Only save off the new mount options in case of a successful
742 osb->s_mount_opt = parsed_options.mount_opt;
743 osb->s_atime_quantum = parsed_options.atime_quantum;
744 osb->preferred_slot = parsed_options.slot;
745 if (parsed_options.commit_interval)
746 osb->osb_commit_interval = parsed_options.commit_interval;
748 if (!ocfs2_is_hard_readonly(osb))
749 ocfs2_set_journal_params(osb);
751 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
752 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
759 static int ocfs2_sb_probe(struct super_block *sb,
760 struct buffer_head **bh,
762 struct ocfs2_blockcheck_stats *stats)
765 struct ocfs1_vol_disk_hdr *hdr;
766 struct ocfs2_dinode *di;
772 *sector_size = bdev_logical_block_size(sb->s_bdev);
773 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
774 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
775 *sector_size, OCFS2_MAX_BLOCKSIZE);
780 /* Can this really happen? */
781 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
782 *sector_size = OCFS2_MIN_BLOCKSIZE;
784 /* check block zero for old format */
785 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
790 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
791 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
792 mlog(ML_ERROR, "incompatible version: %u.%u\n",
793 hdr->major_version, hdr->minor_version);
796 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
797 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
798 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
805 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
806 "upgraded before mounting with ocfs v2\n");
811 * Now check at magic offset for 512, 1024, 2048, 4096
812 * blocksizes. 4096 is the maximum blocksize because it is
813 * the minimum clustersize.
816 for (blksize = *sector_size;
817 blksize <= OCFS2_MAX_BLOCKSIZE;
819 tmpstat = ocfs2_get_sector(sb, bh,
820 OCFS2_SUPER_BLOCK_BLKNO,
827 di = (struct ocfs2_dinode *) (*bh)->b_data;
828 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
829 spin_lock_init(&stats->b_lock);
830 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
835 if (tmpstat != -EAGAIN) {
845 static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
847 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
849 if (osb->s_mount_opt & hb_enabled) {
850 if (ocfs2_mount_local(osb)) {
851 mlog(ML_ERROR, "Cannot heartbeat on a locally "
852 "mounted device.\n");
855 if (ocfs2_userspace_stack(osb)) {
856 mlog(ML_ERROR, "Userspace stack expected, but "
857 "o2cb heartbeat arguments passed to mount\n");
860 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
861 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
862 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
863 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
864 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
869 if (!(osb->s_mount_opt & hb_enabled)) {
870 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
871 !ocfs2_userspace_stack(osb)) {
872 mlog(ML_ERROR, "Heartbeat has to be started to mount "
873 "a read-write clustered device.\n");
882 * If we're using a userspace stack, mount should have passed
883 * a name that matches the disk. If not, mount should not
884 * have passed a stack.
886 static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
887 struct mount_options *mopt)
889 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
891 "cluster stack passed to mount, but this filesystem "
892 "does not support it\n");
896 if (ocfs2_userspace_stack(osb) &&
897 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
898 OCFS2_STACK_LABEL_LEN)) {
900 "cluster stack passed to mount (\"%s\") does not "
901 "match the filesystem (\"%s\")\n",
903 osb->osb_cluster_stack);
910 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
913 struct super_block *sb = osb->sb;
914 unsigned int feature[OCFS2_MAXQUOTAS] = {
915 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
916 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
919 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
920 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
923 status = dquot_resume(sb, type);
925 struct ocfs2_mem_dqinfo *oinfo;
927 /* Cancel periodic syncing before suspending */
928 oinfo = sb_dqinfo(sb, type)->dqi_priv;
929 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
930 status = dquot_suspend(sb, type);
936 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
937 "remount (error = %d).\n", status);
941 static int ocfs2_enable_quotas(struct ocfs2_super *osb)
943 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
944 struct super_block *sb = osb->sb;
945 unsigned int feature[OCFS2_MAXQUOTAS] = {
946 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
947 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
948 unsigned int ino[OCFS2_MAXQUOTAS] = {
949 LOCAL_USER_QUOTA_SYSTEM_INODE,
950 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
954 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
955 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
956 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
958 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
964 status = dquot_enable(inode[type], type, QFMT_OCFS2,
965 DQUOT_USAGE_ENABLED);
970 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
974 ocfs2_disable_quotas(osb);
975 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
981 static void ocfs2_disable_quotas(struct ocfs2_super *osb)
985 struct super_block *sb = osb->sb;
986 struct ocfs2_mem_dqinfo *oinfo;
988 /* We mostly ignore errors in this function because there's not much
989 * we can do when we see them */
990 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
991 if (!sb_has_quota_loaded(sb, type))
993 /* Cancel periodic syncing before we grab dqonoff_mutex */
994 oinfo = sb_dqinfo(sb, type)->dqi_priv;
995 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
996 inode = igrab(sb->s_dquot.files[type]);
997 /* Turn off quotas. This will remove all dquot structures from
998 * memory and so they will be automatically synced to global
1000 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
1001 DQUOT_LIMITS_ENABLED);
1008 static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
1010 struct dentry *root;
1011 int status, sector_size;
1012 struct mount_options parsed_options;
1013 struct inode *inode = NULL;
1014 struct ocfs2_super *osb = NULL;
1015 struct buffer_head *bh = NULL;
1017 struct ocfs2_blockcheck_stats stats;
1019 trace_ocfs2_fill_super(sb, data, silent);
1021 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
1023 goto read_super_error;
1026 /* probe for superblock */
1027 status = ocfs2_sb_probe(sb, &bh, §or_size, &stats);
1029 mlog(ML_ERROR, "superblock probe failed!\n");
1030 goto read_super_error;
1033 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
1037 goto read_super_error;
1042 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1044 goto read_super_error;
1046 osb->s_mount_opt = parsed_options.mount_opt;
1047 osb->s_atime_quantum = parsed_options.atime_quantum;
1048 osb->preferred_slot = parsed_options.slot;
1049 osb->osb_commit_interval = parsed_options.commit_interval;
1051 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
1052 osb->osb_resv_level = parsed_options.resv_level;
1053 osb->osb_dir_resv_level = parsed_options.resv_level;
1054 if (parsed_options.dir_resv_level == -1)
1055 osb->osb_dir_resv_level = parsed_options.resv_level;
1057 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
1059 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1061 goto read_super_error;
1063 sb->s_magic = OCFS2_SUPER_MAGIC;
1065 sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) |
1066 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
1068 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1070 if (bdev_read_only(sb->s_bdev)) {
1071 if (!(sb->s_flags & MS_RDONLY)) {
1073 mlog(ML_ERROR, "Readonly device detected but readonly "
1074 "mount was not specified.\n");
1075 goto read_super_error;
1078 /* You should not be able to start a local heartbeat
1079 * on a readonly device. */
1080 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1082 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1084 goto read_super_error;
1087 status = ocfs2_check_journals_nolocks(osb);
1089 if (status == -EROFS)
1090 mlog(ML_ERROR, "Recovery required on readonly "
1091 "file system, but write access is "
1095 goto read_super_error;
1098 ocfs2_set_ro_flag(osb, 1);
1100 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1101 "Cluster services will not be used for this mount. "
1102 "Recovery will be skipped.\n", osb->dev_str);
1105 if (!ocfs2_is_hard_readonly(osb)) {
1106 if (sb->s_flags & MS_RDONLY)
1107 ocfs2_set_ro_flag(osb, 0);
1110 status = ocfs2_verify_heartbeat(osb);
1113 goto read_super_error;
1116 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1117 ocfs2_debugfs_root);
1118 if (!osb->osb_debug_root) {
1120 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1121 goto read_super_error;
1124 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1125 osb->osb_debug_root,
1127 &ocfs2_osb_debug_fops);
1128 if (!osb->osb_ctxt) {
1131 goto read_super_error;
1134 if (ocfs2_meta_ecc(osb)) {
1135 status = ocfs2_blockcheck_stats_debugfs_install(
1136 &osb->osb_ecc_stats,
1137 osb->osb_debug_root);
1140 "Unable to create blockcheck statistics "
1142 goto read_super_error;
1146 status = ocfs2_mount_volume(sb);
1148 goto read_super_error;
1150 if (osb->root_inode)
1151 inode = igrab(osb->root_inode);
1156 goto read_super_error;
1159 root = d_make_root(inode);
1163 goto read_super_error;
1168 ocfs2_complete_mount_recovery(osb);
1170 if (ocfs2_mount_local(osb))
1171 snprintf(nodestr, sizeof(nodestr), "local");
1173 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1175 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
1176 "with %s data mode.\n",
1177 osb->dev_str, nodestr, osb->slot_num,
1178 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1181 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1182 wake_up(&osb->osb_mount_event);
1184 /* Now we can initialize quotas because we can afford to wait
1185 * for cluster locks recovery now. That also means that truncation
1186 * log recovery can happen but that waits for proper quota setup */
1187 if (!(sb->s_flags & MS_RDONLY)) {
1188 status = ocfs2_enable_quotas(osb);
1190 /* We have to err-out specially here because
1191 * s_root is already set */
1193 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1194 wake_up(&osb->osb_mount_event);
1199 ocfs2_complete_quota_recovery(osb);
1201 /* Now we wake up again for processes waiting for quotas */
1202 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1203 wake_up(&osb->osb_mount_event);
1205 /* Start this when the mount is almost sure of being successful */
1206 ocfs2_orphan_scan_start(osb);
1214 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1215 wake_up(&osb->osb_mount_event);
1216 ocfs2_dismount_volume(sb, 1);
1224 static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
1226 const char *dev_name,
1229 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
1232 static struct file_system_type ocfs2_fs_type = {
1233 .owner = THIS_MODULE,
1235 .mount = ocfs2_mount,
1236 .kill_sb = kill_block_super,
1237 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
1240 MODULE_ALIAS_FS("ocfs2");
1242 static int ocfs2_check_set_options(struct super_block *sb,
1243 struct mount_options *options)
1245 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1246 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1247 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1248 mlog(ML_ERROR, "User quotas were requested, but this "
1249 "filesystem does not have the feature enabled.\n");
1252 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1253 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1254 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1255 mlog(ML_ERROR, "Group quotas were requested, but this "
1256 "filesystem does not have the feature enabled.\n");
1259 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1260 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1261 mlog(ML_ERROR, "ACL support requested but extended attributes "
1262 "feature is not enabled\n");
1265 /* No ACL setting specified? Use XATTR feature... */
1266 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1267 OCFS2_MOUNT_NO_POSIX_ACL))) {
1268 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1269 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1271 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1276 static int ocfs2_parse_options(struct super_block *sb,
1278 struct mount_options *mopt,
1281 int status, user_stack = 0;
1285 substring_t args[MAX_OPT_ARGS];
1287 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
1289 mopt->commit_interval = 0;
1290 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
1291 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1292 mopt->slot = OCFS2_INVALID_SLOT;
1293 mopt->localalloc_opt = -1;
1294 mopt->cluster_stack[0] = '\0';
1295 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
1296 mopt->dir_resv_level = -1;
1303 while ((p = strsep(&options, ",")) != NULL) {
1307 token = match_token(p, tokens, args);
1310 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
1313 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1316 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
1319 if (match_int(&args[0], &option)) {
1324 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
1326 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
1329 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
1332 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
1335 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1336 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1337 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
1340 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1341 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1342 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_ROFS;
1345 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1346 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1347 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_CONT;
1349 case Opt_data_ordered:
1350 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
1352 case Opt_data_writeback:
1353 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
1355 case Opt_user_xattr:
1356 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1358 case Opt_nouser_xattr:
1359 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1361 case Opt_atime_quantum:
1362 if (match_int(&args[0], &option)) {
1367 mopt->atime_quantum = option;
1370 if (match_int(&args[0], &option)) {
1375 mopt->slot = (s16)option;
1378 if (match_int(&args[0], &option)) {
1385 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
1386 mopt->commit_interval = HZ * option;
1388 case Opt_localalloc:
1389 if (match_int(&args[0], &option)) {
1394 mopt->localalloc_opt = option;
1396 case Opt_localflocks:
1398 * Changing this during remount could race
1399 * flock() requests, or "unbalance" existing
1400 * ones (e.g., a lock is taken in one mode but
1401 * dropped in the other). If users care enough
1402 * to flip locking modes during remount, we
1403 * could add a "local" flag to individual
1404 * flock structures for proper tracking of
1408 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1411 /* Check both that the option we were passed
1412 * is of the right length and that it is a proper
1413 * string of the right length.
1415 if (((args[0].to - args[0].from) !=
1416 OCFS2_STACK_LABEL_LEN) ||
1417 (strnlen(args[0].from,
1418 OCFS2_STACK_LABEL_LEN) !=
1419 OCFS2_STACK_LABEL_LEN)) {
1421 "Invalid cluster_stack option\n");
1425 memcpy(mopt->cluster_stack, args[0].from,
1426 OCFS2_STACK_LABEL_LEN);
1427 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
1429 * Open code the memcmp here as we don't have
1431 * ocfs2_userspace_stack().
1433 if (memcmp(mopt->cluster_stack,
1434 OCFS2_CLASSIC_CLUSTER_STACK,
1435 OCFS2_STACK_LABEL_LEN))
1439 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1442 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1445 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1447 case Opt_coherency_buffered:
1448 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1450 case Opt_coherency_full:
1451 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1454 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1455 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
1458 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1459 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1461 case Opt_resv_level:
1464 if (match_int(&args[0], &option)) {
1468 if (option >= OCFS2_MIN_RESV_LEVEL &&
1469 option < OCFS2_MAX_RESV_LEVEL)
1470 mopt->resv_level = option;
1472 case Opt_dir_resv_level:
1475 if (match_int(&args[0], &option)) {
1479 if (option >= OCFS2_MIN_RESV_LEVEL &&
1480 option < OCFS2_MAX_RESV_LEVEL)
1481 mopt->dir_resv_level = option;
1483 case Opt_journal_async_commit:
1484 mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
1488 "Unrecognized mount option \"%s\" "
1489 "or missing value\n", p);
1495 if (user_stack == 0) {
1496 /* Ensure only one heartbeat mode */
1497 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1498 OCFS2_MOUNT_HB_GLOBAL |
1499 OCFS2_MOUNT_HB_NONE);
1500 if (hweight32(tmp) != 1) {
1501 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1513 static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
1515 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
1516 unsigned long opts = osb->s_mount_opt;
1517 unsigned int local_alloc_megs;
1519 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1520 seq_printf(s, ",_netdev");
1521 if (opts & OCFS2_MOUNT_HB_LOCAL)
1522 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1524 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1526 seq_printf(s, ",%s", OCFS2_HB_NONE);
1528 if (opts & OCFS2_MOUNT_NOINTR)
1529 seq_printf(s, ",nointr");
1531 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1532 seq_printf(s, ",data=writeback");
1534 seq_printf(s, ",data=ordered");
1536 if (opts & OCFS2_MOUNT_BARRIER)
1537 seq_printf(s, ",barrier=1");
1539 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1540 seq_printf(s, ",errors=panic");
1541 else if (opts & OCFS2_MOUNT_ERRORS_CONT)
1542 seq_printf(s, ",errors=continue");
1544 seq_printf(s, ",errors=remount-ro");
1546 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1547 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1549 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
1551 if (osb->osb_commit_interval)
1552 seq_printf(s, ",commit=%u",
1553 (unsigned) (osb->osb_commit_interval / HZ));
1555 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
1556 if (local_alloc_megs != ocfs2_la_default_mb(osb))
1557 seq_printf(s, ",localalloc=%d", local_alloc_megs);
1559 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1560 seq_printf(s, ",localflocks,");
1562 if (osb->osb_cluster_stack[0])
1563 seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack,
1564 OCFS2_STACK_LABEL_LEN);
1565 if (opts & OCFS2_MOUNT_USRQUOTA)
1566 seq_printf(s, ",usrquota");
1567 if (opts & OCFS2_MOUNT_GRPQUOTA)
1568 seq_printf(s, ",grpquota");
1570 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1571 seq_printf(s, ",coherency=buffered");
1573 seq_printf(s, ",coherency=full");
1575 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1576 seq_printf(s, ",nouser_xattr");
1578 seq_printf(s, ",user_xattr");
1580 if (opts & OCFS2_MOUNT_INODE64)
1581 seq_printf(s, ",inode64");
1583 if (opts & OCFS2_MOUNT_POSIX_ACL)
1584 seq_printf(s, ",acl");
1586 seq_printf(s, ",noacl");
1588 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1589 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1591 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1592 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1594 if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
1595 seq_printf(s, ",journal_async_commit");
1600 static int __init ocfs2_init(void)
1604 status = init_ocfs2_uptodate_cache();
1608 status = ocfs2_initialize_mem_caches();
1612 ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
1618 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1619 if (!ocfs2_debugfs_root) {
1621 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
1625 ocfs2_set_locking_protocol();
1627 status = register_quota_format(&ocfs2_quota_format);
1630 status = register_filesystem(&ocfs2_fs_type);
1634 unregister_quota_format(&ocfs2_quota_format);
1636 destroy_workqueue(ocfs2_wq);
1637 debugfs_remove(ocfs2_debugfs_root);
1639 ocfs2_free_mem_caches();
1641 exit_ocfs2_uptodate_cache();
1647 static void __exit ocfs2_exit(void)
1650 flush_workqueue(ocfs2_wq);
1651 destroy_workqueue(ocfs2_wq);
1654 unregister_quota_format(&ocfs2_quota_format);
1656 debugfs_remove(ocfs2_debugfs_root);
1658 ocfs2_free_mem_caches();
1660 unregister_filesystem(&ocfs2_fs_type);
1662 exit_ocfs2_uptodate_cache();
1665 static void ocfs2_put_super(struct super_block *sb)
1667 trace_ocfs2_put_super(sb);
1669 ocfs2_sync_blockdev(sb);
1670 ocfs2_dismount_volume(sb, 0);
1673 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
1675 struct ocfs2_super *osb;
1676 u32 numbits, freebits;
1678 struct ocfs2_dinode *bm_lock;
1679 struct buffer_head *bh = NULL;
1680 struct inode *inode = NULL;
1682 trace_ocfs2_statfs(dentry->d_sb, buf);
1684 osb = OCFS2_SB(dentry->d_sb);
1686 inode = ocfs2_get_system_file_inode(osb,
1687 GLOBAL_BITMAP_SYSTEM_INODE,
1688 OCFS2_INVALID_SLOT);
1690 mlog(ML_ERROR, "failed to get bitmap inode\n");
1695 status = ocfs2_inode_lock(inode, &bh, 0);
1701 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1703 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1704 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1706 buf->f_type = OCFS2_SUPER_MAGIC;
1707 buf->f_bsize = dentry->d_sb->s_blocksize;
1708 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1709 buf->f_blocks = ((sector_t) numbits) *
1710 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1711 buf->f_bfree = ((sector_t) freebits) *
1712 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1713 buf->f_bavail = buf->f_bfree;
1714 buf->f_files = numbits;
1715 buf->f_ffree = freebits;
1716 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1718 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1719 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
1723 ocfs2_inode_unlock(inode, 0);
1734 static void ocfs2_inode_init_once(void *data)
1736 struct ocfs2_inode_info *oi = data;
1739 oi->ip_open_count = 0;
1740 spin_lock_init(&oi->ip_lock);
1741 ocfs2_extent_map_init(&oi->vfs_inode);
1742 INIT_LIST_HEAD(&oi->ip_io_markers);
1743 oi->ip_dir_start_lookup = 0;
1744 mutex_init(&oi->ip_unaligned_aio);
1745 init_rwsem(&oi->ip_alloc_sem);
1746 init_rwsem(&oi->ip_xattr_sem);
1747 mutex_init(&oi->ip_io_mutex);
1749 oi->ip_blkno = 0ULL;
1750 oi->ip_clusters = 0;
1752 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1754 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
1755 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
1756 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
1758 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
1759 &ocfs2_inode_caching_ops);
1761 inode_init_once(&oi->vfs_inode);
1764 static int ocfs2_initialize_mem_caches(void)
1766 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
1767 sizeof(struct ocfs2_inode_info),
1769 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1770 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
1771 ocfs2_inode_init_once);
1772 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1773 sizeof(struct ocfs2_dquot),
1775 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1778 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1779 sizeof(struct ocfs2_quota_chunk),
1781 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1783 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1784 !ocfs2_qf_chunk_cachep) {
1785 if (ocfs2_inode_cachep)
1786 kmem_cache_destroy(ocfs2_inode_cachep);
1787 if (ocfs2_dquot_cachep)
1788 kmem_cache_destroy(ocfs2_dquot_cachep);
1789 if (ocfs2_qf_chunk_cachep)
1790 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1797 static void ocfs2_free_mem_caches(void)
1800 * Make sure all delayed rcu free inodes are flushed before we
1804 if (ocfs2_inode_cachep)
1805 kmem_cache_destroy(ocfs2_inode_cachep);
1806 ocfs2_inode_cachep = NULL;
1808 if (ocfs2_dquot_cachep)
1809 kmem_cache_destroy(ocfs2_dquot_cachep);
1810 ocfs2_dquot_cachep = NULL;
1812 if (ocfs2_qf_chunk_cachep)
1813 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1814 ocfs2_qf_chunk_cachep = NULL;
1817 static int ocfs2_get_sector(struct super_block *sb,
1818 struct buffer_head **bh,
1822 if (!sb_set_blocksize(sb, sect_size)) {
1823 mlog(ML_ERROR, "unable to set blocksize\n");
1827 *bh = sb_getblk(sb, block);
1829 mlog_errno(-ENOMEM);
1833 if (!buffer_dirty(*bh))
1834 clear_buffer_uptodate(*bh);
1836 ll_rw_block(READ, 1, bh);
1837 wait_on_buffer(*bh);
1838 if (!buffer_uptodate(*bh)) {
1848 static int ocfs2_mount_volume(struct super_block *sb)
1851 int unlock_super = 0;
1852 struct ocfs2_super *osb = OCFS2_SB(sb);
1854 if (ocfs2_is_hard_readonly(osb))
1857 status = ocfs2_dlm_init(osb);
1863 status = ocfs2_super_lock(osb, 1);
1870 /* This will load up the node map and add ourselves to it. */
1871 status = ocfs2_find_slot(osb);
1877 /* load all node-local system inodes */
1878 status = ocfs2_init_local_system_inodes(osb);
1884 status = ocfs2_check_volume(osb);
1890 status = ocfs2_truncate_log_init(osb);
1896 ocfs2_super_unlock(osb, 1);
1901 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1903 int tmp, hangup_needed = 0;
1904 struct ocfs2_super *osb = NULL;
1907 trace_ocfs2_dismount_volume(sb);
1913 debugfs_remove(osb->osb_ctxt);
1915 /* Orphan scan should be stopped as early as possible */
1916 ocfs2_orphan_scan_stop(osb);
1918 ocfs2_disable_quotas(osb);
1920 /* All dquots should be freed by now */
1921 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1922 /* Wait for worker to be done with the work structure in osb */
1923 cancel_work_sync(&osb->dquot_drop_work);
1925 ocfs2_shutdown_local_alloc(osb);
1927 ocfs2_truncate_log_shutdown(osb);
1929 /* This will disable recovery and flush any recovery work. */
1930 ocfs2_recovery_exit(osb);
1932 ocfs2_journal_shutdown(osb);
1934 ocfs2_sync_blockdev(sb);
1936 ocfs2_purge_refcount_trees(osb);
1938 /* No cluster connection means we've failed during mount, so skip
1939 * all the steps which depended on that to complete. */
1941 tmp = ocfs2_super_lock(osb, 1);
1948 if (osb->slot_num != OCFS2_INVALID_SLOT)
1949 ocfs2_put_slot(osb);
1952 ocfs2_super_unlock(osb, 1);
1954 ocfs2_release_system_inodes(osb);
1957 * If we're dismounting due to mount error, mount.ocfs2 will clean
1958 * up heartbeat. If we're a local mount, there is no heartbeat.
1959 * If we failed before we got a uuid_str yet, we can't stop
1960 * heartbeat. Otherwise, do it.
1962 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1963 !ocfs2_is_hard_readonly(osb))
1967 ocfs2_dlm_shutdown(osb, hangup_needed);
1969 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
1970 debugfs_remove(osb->osb_debug_root);
1973 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
1975 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1977 if (ocfs2_mount_local(osb))
1978 snprintf(nodestr, sizeof(nodestr), "local");
1980 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1982 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1983 osb->dev_str, nodestr);
1985 ocfs2_delete_osb(osb);
1988 sb->s_fs_info = NULL;
1991 static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1992 unsigned uuid_bytes)
1997 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1999 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
2000 if (osb->uuid_str == NULL)
2003 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
2004 /* print with null */
2005 ret = snprintf(ptr, 3, "%02X", uuid[i]);
2006 if (ret != 2) /* drop super cleans up */
2008 /* then only advance past the last char */
2015 /* Make sure entire volume is addressable by our journal. Requires
2016 osb_clusters_at_boot to be valid and for the journal to have been
2017 initialized by ocfs2_journal_init(). */
2018 static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2022 ocfs2_clusters_to_blocks(osb->sb,
2023 osb->osb_clusters_at_boot) - 1;
2025 /* 32-bit block number is always OK. */
2026 if (max_block <= (u32)~0ULL)
2029 /* Volume is "huge", so see if our journal is new enough to
2031 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2032 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2033 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2034 JBD2_FEATURE_INCOMPAT_64BIT))) {
2035 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2036 "Enable the 'block64' journal option with tunefs.ocfs2");
2045 static int ocfs2_initialize_super(struct super_block *sb,
2046 struct buffer_head *bh,
2048 struct ocfs2_blockcheck_stats *stats)
2051 int i, cbits, bbits;
2052 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
2053 struct inode *inode = NULL;
2054 struct ocfs2_journal *journal;
2055 struct ocfs2_super *osb;
2058 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
2065 sb->s_fs_info = osb;
2066 sb->s_op = &ocfs2_sops;
2067 sb->s_d_op = &ocfs2_dentry_ops;
2068 sb->s_export_op = &ocfs2_export_ops;
2069 sb->s_qcop = &dquot_quotactl_sysfile_ops;
2070 sb->dq_op = &ocfs2_quota_operations;
2071 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
2072 sb->s_xattr = ocfs2_xattr_handlers;
2073 sb->s_time_gran = 1;
2074 sb->s_flags |= MS_NOATIME;
2075 /* this is needed to support O_LARGEFILE */
2076 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2077 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2078 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
2079 memcpy(sb->s_uuid, di->id2.i_super.s_uuid,
2080 sizeof(di->id2.i_super.s_uuid));
2082 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2084 for (i = 0; i < 3; i++)
2085 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2086 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2089 /* Save off for ocfs2_rw_direct */
2090 osb->s_sectsize_bits = blksize_bits(sector_size);
2091 BUG_ON(!osb->s_sectsize_bits);
2093 spin_lock_init(&osb->dc_task_lock);
2094 init_waitqueue_head(&osb->dc_event);
2095 osb->dc_work_sequence = 0;
2096 osb->dc_wake_sequence = 0;
2097 INIT_LIST_HEAD(&osb->blocked_lock_list);
2098 osb->blocked_lock_count = 0;
2099 spin_lock_init(&osb->osb_lock);
2100 spin_lock_init(&osb->osb_xattr_lock);
2101 ocfs2_init_steal_slots(osb);
2103 mutex_init(&osb->system_file_mutex);
2105 atomic_set(&osb->alloc_stats.moves, 0);
2106 atomic_set(&osb->alloc_stats.local_data, 0);
2107 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2108 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2109 atomic_set(&osb->alloc_stats.bg_extends, 0);
2111 /* Copy the blockcheck stats from the superblock probe */
2112 osb->osb_ecc_stats = *stats;
2114 ocfs2_init_node_maps(osb);
2116 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2117 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2119 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2120 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2121 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2127 ocfs2_orphan_scan_init(osb);
2129 status = ocfs2_recovery_init(osb);
2131 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2136 init_waitqueue_head(&osb->checkpoint_event);
2138 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2140 osb->slot_num = OCFS2_INVALID_SLOT;
2142 osb->s_xattr_inline_size = le16_to_cpu(
2143 di->id2.i_super.s_xattr_inline_size);
2145 osb->local_alloc_state = OCFS2_LA_UNUSED;
2146 osb->local_alloc_bh = NULL;
2147 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
2149 init_waitqueue_head(&osb->osb_mount_event);
2151 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2157 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2158 if (!osb->vol_label) {
2159 mlog(ML_ERROR, "unable to alloc vol label\n");
2164 osb->slot_recovery_generations =
2165 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2167 if (!osb->slot_recovery_generations) {
2173 init_waitqueue_head(&osb->osb_wipe_event);
2174 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2175 sizeof(*osb->osb_orphan_wipes),
2177 if (!osb->osb_orphan_wipes) {
2183 osb->osb_rf_lock_tree = RB_ROOT;
2185 osb->s_feature_compat =
2186 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2187 osb->s_feature_ro_compat =
2188 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2189 osb->s_feature_incompat =
2190 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2192 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2193 mlog(ML_ERROR, "couldn't mount because of unsupported "
2194 "optional features (%x).\n", i);
2198 if (!(osb->sb->s_flags & MS_RDONLY) &&
2199 (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
2200 mlog(ML_ERROR, "couldn't mount RDWR because of "
2201 "unsupported optional features (%x).\n", i);
2206 if (ocfs2_clusterinfo_valid(osb)) {
2207 osb->osb_stackflags =
2208 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
2209 strlcpy(osb->osb_cluster_stack,
2210 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
2211 OCFS2_STACK_LABEL_LEN + 1);
2212 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2214 "couldn't mount because of an invalid "
2215 "cluster stack label (%s) \n",
2216 osb->osb_cluster_stack);
2220 strlcpy(osb->osb_cluster_name,
2221 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
2222 OCFS2_CLUSTER_NAME_LEN + 1);
2224 /* The empty string is identical with classic tools that
2225 * don't know about s_cluster_info. */
2226 osb->osb_cluster_stack[0] = '\0';
2229 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2232 * This should be done in ocfs2_journal_init(), but unknown
2233 * ordering issues will cause the filesystem to crash.
2234 * If anyone wants to figure out what part of the code
2235 * refers to osb->journal before ocfs2_journal_init() is run,
2238 /* initialize our journal structure */
2240 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
2242 mlog(ML_ERROR, "unable to alloc journal\n");
2246 osb->journal = journal;
2247 journal->j_osb = osb;
2249 atomic_set(&journal->j_num_trans, 0);
2250 init_rwsem(&journal->j_trans_barrier);
2251 init_waitqueue_head(&journal->j_checkpointed);
2252 spin_lock_init(&journal->j_lock);
2253 journal->j_trans_id = (unsigned long) 1;
2254 INIT_LIST_HEAD(&journal->j_la_cleanups);
2255 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
2256 journal->j_state = OCFS2_JOURNAL_FREE;
2258 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2259 init_llist_head(&osb->dquot_drop_list);
2261 /* get some pseudo constants for clustersize bits */
2262 osb->s_clustersize_bits =
2263 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2264 osb->s_clustersize = 1 << osb->s_clustersize_bits;
2266 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2267 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2268 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2269 osb->s_clustersize);
2274 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2275 le32_to_cpu(di->i_clusters));
2277 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2280 mlog(ML_ERROR, "Volume too large "
2281 "to mount safely on this system");
2286 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2287 sizeof(di->id2.i_super.s_uuid))) {
2288 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2293 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2294 OCFS2_MAX_VOL_LABEL_LEN);
2295 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2296 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2297 osb->first_cluster_group_blkno =
2298 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2299 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
2300 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2301 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2302 (unsigned long long)osb->root_blkno,
2303 (unsigned long long)osb->system_dir_blkno,
2304 osb->s_clustersize_bits);
2306 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2307 if (!osb->osb_dlm_debug) {
2313 atomic_set(&osb->vol_state, VOLUME_INIT);
2315 /* load root, system_dir, and all global system inodes */
2316 status = ocfs2_init_global_system_inodes(osb);
2325 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2326 OCFS2_INVALID_SLOT);
2333 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
2334 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
2337 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2338 osb->s_feature_incompat) * 8;
2340 status = ocfs2_init_slot_info(osb);
2345 cleancache_init_shared_fs(sb);
2352 * will return: -EAGAIN if it is ok to keep searching for superblocks
2353 * -EINVAL if there is a bad superblock
2356 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2357 struct buffer_head *bh,
2359 struct ocfs2_blockcheck_stats *stats)
2361 int status = -EAGAIN;
2363 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2364 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
2365 /* We have to do a raw check of the feature here */
2366 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2367 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2368 status = ocfs2_block_check_validate(bh->b_data,
2376 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2377 mlog(ML_ERROR, "found superblock with incorrect block "
2378 "size: found %u, should be %u\n",
2379 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2381 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2382 OCFS2_MAJOR_REV_LEVEL ||
2383 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2384 OCFS2_MINOR_REV_LEVEL) {
2385 mlog(ML_ERROR, "found superblock with bad version: "
2386 "found %u.%u, should be %u.%u\n",
2387 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2388 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2389 OCFS2_MAJOR_REV_LEVEL,
2390 OCFS2_MINOR_REV_LEVEL);
2391 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2392 mlog(ML_ERROR, "bad block number on superblock: "
2393 "found %llu, should be %llu\n",
2394 (unsigned long long)le64_to_cpu(di->i_blkno),
2395 (unsigned long long)bh->b_blocknr);
2396 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2397 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2398 mlog(ML_ERROR, "bad cluster size found: %u\n",
2399 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2400 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2401 mlog(ML_ERROR, "bad root_blkno: 0\n");
2402 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2403 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2404 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2406 "Superblock slots found greater than file system "
2407 "maximum: found %u, max %u\n",
2408 le16_to_cpu(di->id2.i_super.s_max_slots),
2417 if (status && status != -EAGAIN)
2422 static int ocfs2_check_volume(struct ocfs2_super *osb)
2427 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2431 /* Init our journal object. */
2432 status = ocfs2_journal_init(osb->journal, &dirty);
2434 mlog(ML_ERROR, "Could not initialize journal!\n");
2438 /* Now that journal has been initialized, check to make sure
2439 entire volume is addressable. */
2440 status = ocfs2_journal_addressable(osb);
2444 /* If the journal was unmounted cleanly then we don't want to
2445 * recover anything. Otherwise, journal_load will do that
2446 * dirty work for us :) */
2448 status = ocfs2_journal_wipe(osb->journal, 0);
2454 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2455 "unmounted cleanly, recovering it.\n", osb->dev_str);
2458 local = ocfs2_mount_local(osb);
2460 /* will play back anything left in the journal. */
2461 status = ocfs2_journal_load(osb->journal, local, dirty);
2463 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2467 if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
2468 jbd2_journal_set_features(osb->journal->j_journal,
2469 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2470 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2472 jbd2_journal_clear_features(osb->journal->j_journal,
2473 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2474 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2477 /* recover my local alloc if we didn't unmount cleanly. */
2478 status = ocfs2_begin_local_alloc_recovery(osb,
2485 /* we complete the recovery process after we've marked
2486 * ourselves as mounted. */
2489 status = ocfs2_load_local_alloc(osb);
2496 /* Recovery will be completed after we've mounted the
2497 * rest of the volume. */
2499 osb->local_alloc_copy = local_alloc;
2503 /* go through each journal, trylock it and if you get the
2504 * lock, and it's marked as dirty, set the bit in the recover
2505 * map and launch a recovery thread for it. */
2506 status = ocfs2_mark_dead_nodes(osb);
2512 status = ocfs2_compute_replay_slots(osb);
2525 * The routine gets called from dismount or close whenever a dismount on
2526 * volume is requested and the osb open count becomes 1.
2527 * It will remove the osb from the global list and also free up all the
2528 * initialized resources and fileobject.
2530 static void ocfs2_delete_osb(struct ocfs2_super *osb)
2532 /* This function assumes that the caller has the main osb resource */
2534 ocfs2_free_slot_info(osb);
2536 kfree(osb->osb_orphan_wipes);
2537 kfree(osb->slot_recovery_generations);
2539 * This belongs in journal shutdown, but because we have to
2540 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2543 kfree(osb->journal);
2544 kfree(osb->local_alloc_copy);
2545 kfree(osb->uuid_str);
2546 kfree(osb->vol_label);
2547 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2548 memset(osb, 0, sizeof(struct ocfs2_super));
2551 /* Depending on the mount option passed, perform one of the following:
2552 * Put OCFS2 into a readonly state (default)
2553 * Return EIO so that only the process errs
2554 * Fix the error as if fsck.ocfs2 -y
2557 static int ocfs2_handle_error(struct super_block *sb)
2559 struct ocfs2_super *osb = OCFS2_SB(sb);
2562 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2563 pr_crit("On-disk corruption discovered. "
2564 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
2566 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) {
2567 panic("OCFS2: (device %s): panic forced after error\n",
2569 } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) {
2570 pr_crit("OCFS2: Returning error to the calling process.\n");
2572 } else { /* default option */
2574 if (sb->s_flags & MS_RDONLY &&
2575 (ocfs2_is_soft_readonly(osb) ||
2576 ocfs2_is_hard_readonly(osb)))
2579 pr_crit("OCFS2: File system is now read-only.\n");
2580 sb->s_flags |= MS_RDONLY;
2581 ocfs2_set_ro_flag(osb, 0);
2587 int __ocfs2_error(struct super_block *sb, const char *function,
2588 const char *fmt, ...)
2590 struct va_format vaf;
2593 va_start(args, fmt);
2597 /* Not using mlog here because we want to show the actual
2598 * function the error came from. */
2599 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV",
2600 sb->s_id, function, &vaf);
2604 return ocfs2_handle_error(sb);
2607 /* Handle critical errors. This is intentionally more drastic than
2608 * ocfs2_handle_error, so we only use for things like journal errors,
2610 void __ocfs2_abort(struct super_block *sb, const char *function,
2611 const char *fmt, ...)
2613 struct va_format vaf;
2616 va_start(args, fmt);
2621 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV",
2622 sb->s_id, function, &vaf);
2626 /* We don't have the cluster support yet to go straight to
2627 * hard readonly in here. Until then, we want to keep
2628 * ocfs2_abort() so that we can at least mark critical
2631 * TODO: This should abort the journal and alert other nodes
2632 * that our slot needs recovery. */
2634 /* Force a panic(). This stinks, but it's better than letting
2635 * things continue without having a proper hard readonly
2637 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2638 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
2639 ocfs2_handle_error(sb);
2643 * Void signal blockers, because in-kernel sigprocmask() only fails
2644 * when SIG_* is wrong.
2646 void ocfs2_block_signals(sigset_t *oldset)
2651 sigfillset(&blocked);
2652 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2656 void ocfs2_unblock_signals(sigset_t *oldset)
2658 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2662 module_init(ocfs2_init);
2663 module_exit(ocfs2_exit);