1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
7 * load/unload driver, mount/dismount volumes
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
12 #include <linux/module.h>
14 #include <linux/types.h>
15 #include <linux/slab.h>
16 #include <linux/highmem.h>
17 #include <linux/init.h>
18 #include <linux/random.h>
19 #include <linux/statfs.h>
20 #include <linux/moduleparam.h>
21 #include <linux/blkdev.h>
22 #include <linux/socket.h>
23 #include <linux/inet.h>
24 #include <linux/parser.h>
25 #include <linux/crc32.h>
26 #include <linux/debugfs.h>
27 #include <linux/mount.h>
28 #include <linux/seq_file.h>
29 #include <linux/quotaops.h>
30 #include <linux/cleancache.h>
31 #include <linux/signal.h>
33 #define CREATE_TRACE_POINTS
34 #include "ocfs2_trace.h"
36 #include <cluster/masklog.h>
40 /* this should be the only file to include a version 1 header */
41 #include "ocfs1_fs_compat.h"
45 #include "blockcheck.h"
48 #include "extent_map.h"
49 #include "heartbeat.h"
52 #include "localalloc.h"
60 #include "refcounttree.h"
63 #include "buffer_head_io.h"
64 #include "filecheck.h"
66 static struct kmem_cache *ocfs2_inode_cachep;
67 struct kmem_cache *ocfs2_dquot_cachep;
68 struct kmem_cache *ocfs2_qf_chunk_cachep;
70 static struct dentry *ocfs2_debugfs_root;
72 MODULE_AUTHOR("Oracle");
73 MODULE_LICENSE("GPL");
74 MODULE_DESCRIPTION("OCFS2 cluster file system");
78 unsigned long commit_interval;
79 unsigned long mount_opt;
80 unsigned int atime_quantum;
83 unsigned int resv_level;
85 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
88 static int ocfs2_parse_options(struct super_block *sb, char *options,
89 struct mount_options *mopt,
91 static int ocfs2_check_set_options(struct super_block *sb,
92 struct mount_options *options);
93 static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
94 static void ocfs2_put_super(struct super_block *sb);
95 static int ocfs2_mount_volume(struct super_block *sb);
96 static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
97 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
98 static int ocfs2_initialize_mem_caches(void);
99 static void ocfs2_free_mem_caches(void);
100 static void ocfs2_delete_osb(struct ocfs2_super *osb);
102 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
104 static int ocfs2_sync_fs(struct super_block *sb, int wait);
106 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
107 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
108 static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
109 static int ocfs2_check_volume(struct ocfs2_super *osb);
110 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
111 struct buffer_head *bh,
113 struct ocfs2_blockcheck_stats *stats);
114 static int ocfs2_initialize_super(struct super_block *sb,
115 struct buffer_head *bh,
117 struct ocfs2_blockcheck_stats *stats);
118 static int ocfs2_get_sector(struct super_block *sb,
119 struct buffer_head **bh,
122 static struct inode *ocfs2_alloc_inode(struct super_block *sb);
123 static void ocfs2_free_inode(struct inode *inode);
124 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
125 static int ocfs2_enable_quotas(struct ocfs2_super *osb);
126 static void ocfs2_disable_quotas(struct ocfs2_super *osb);
128 static struct dquot **ocfs2_get_dquots(struct inode *inode)
130 return OCFS2_I(inode)->i_dquot;
133 static const struct super_operations ocfs2_sops = {
134 .statfs = ocfs2_statfs,
135 .alloc_inode = ocfs2_alloc_inode,
136 .free_inode = ocfs2_free_inode,
137 .drop_inode = ocfs2_drop_inode,
138 .evict_inode = ocfs2_evict_inode,
139 .sync_fs = ocfs2_sync_fs,
140 .put_super = ocfs2_put_super,
141 .remount_fs = ocfs2_remount,
142 .show_options = ocfs2_show_options,
143 .quota_read = ocfs2_quota_read,
144 .quota_write = ocfs2_quota_write,
145 .get_dquots = ocfs2_get_dquots,
172 Opt_coherency_buffered,
176 Opt_journal_async_commit,
182 static const match_table_t tokens = {
183 {Opt_barrier, "barrier=%u"},
184 {Opt_err_panic, "errors=panic"},
185 {Opt_err_ro, "errors=remount-ro"},
187 {Opt_nointr, "nointr"},
188 {Opt_hb_none, OCFS2_HB_NONE},
189 {Opt_hb_local, OCFS2_HB_LOCAL},
190 {Opt_hb_global, OCFS2_HB_GLOBAL},
191 {Opt_data_ordered, "data=ordered"},
192 {Opt_data_writeback, "data=writeback"},
193 {Opt_atime_quantum, "atime_quantum=%u"},
194 {Opt_slot, "preferred_slot=%u"},
195 {Opt_commit, "commit=%u"},
196 {Opt_localalloc, "localalloc=%d"},
197 {Opt_localflocks, "localflocks"},
198 {Opt_stack, "cluster_stack=%s"},
199 {Opt_user_xattr, "user_xattr"},
200 {Opt_nouser_xattr, "nouser_xattr"},
201 {Opt_inode64, "inode64"},
203 {Opt_noacl, "noacl"},
204 {Opt_usrquota, "usrquota"},
205 {Opt_grpquota, "grpquota"},
206 {Opt_coherency_buffered, "coherency=buffered"},
207 {Opt_coherency_full, "coherency=full"},
208 {Opt_resv_level, "resv_level=%u"},
209 {Opt_dir_resv_level, "dir_resv_level=%u"},
210 {Opt_journal_async_commit, "journal_async_commit"},
211 {Opt_err_cont, "errors=continue"},
212 {Opt_nocluster, "nocluster"},
216 #ifdef CONFIG_DEBUG_FS
217 static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
219 struct ocfs2_cluster_connection *cconn = osb->cconn;
220 struct ocfs2_recovery_map *rm = osb->recovery_map;
221 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
225 out += scnprintf(buf + out, len - out,
226 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
227 "Device", osb->dev_str, osb->uuid_str,
228 osb->fs_generation, osb->vol_label);
230 out += scnprintf(buf + out, len - out,
231 "%10s => State: %d Flags: 0x%lX\n", "Volume",
232 atomic_read(&osb->vol_state), osb->osb_flags);
234 out += scnprintf(buf + out, len - out,
235 "%10s => Block: %lu Cluster: %d\n", "Sizes",
236 osb->sb->s_blocksize, osb->s_clustersize);
238 out += scnprintf(buf + out, len - out,
239 "%10s => Compat: 0x%X Incompat: 0x%X "
241 "Features", osb->s_feature_compat,
242 osb->s_feature_incompat, osb->s_feature_ro_compat);
244 out += scnprintf(buf + out, len - out,
245 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
246 osb->s_mount_opt, osb->s_atime_quantum);
249 out += scnprintf(buf + out, len - out,
250 "%10s => Stack: %s Name: %*s "
251 "Version: %d.%d\n", "Cluster",
252 (*osb->osb_cluster_stack == '\0' ?
253 "o2cb" : osb->osb_cluster_stack),
254 cconn->cc_namelen, cconn->cc_name,
255 cconn->cc_version.pv_major,
256 cconn->cc_version.pv_minor);
259 spin_lock_irqsave(&osb->dc_task_lock, flags);
260 out += scnprintf(buf + out, len - out,
261 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
262 "WorkSeq: %lu\n", "DownCnvt",
263 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
264 osb->blocked_lock_count, osb->dc_wake_sequence,
265 osb->dc_work_sequence);
266 spin_unlock_irqrestore(&osb->dc_task_lock, flags);
268 spin_lock(&osb->osb_lock);
269 out += scnprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
271 (osb->recovery_thread_task ?
272 task_pid_nr(osb->recovery_thread_task) : -1));
273 if (rm->rm_used == 0)
274 out += scnprintf(buf + out, len - out, " None\n");
276 for (i = 0; i < rm->rm_used; i++)
277 out += scnprintf(buf + out, len - out, " %d",
279 out += scnprintf(buf + out, len - out, "\n");
281 spin_unlock(&osb->osb_lock);
283 out += scnprintf(buf + out, len - out,
284 "%10s => Pid: %d Interval: %lu\n", "Commit",
285 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
286 osb->osb_commit_interval);
288 out += scnprintf(buf + out, len - out,
289 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
290 "Journal", osb->journal->j_state,
291 osb->journal->j_trans_id,
292 atomic_read(&osb->journal->j_num_trans));
294 out += scnprintf(buf + out, len - out,
295 "%10s => GlobalAllocs: %d LocalAllocs: %d "
296 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
298 atomic_read(&osb->alloc_stats.bitmap_data),
299 atomic_read(&osb->alloc_stats.local_data),
300 atomic_read(&osb->alloc_stats.bg_allocs),
301 atomic_read(&osb->alloc_stats.moves),
302 atomic_read(&osb->alloc_stats.bg_extends));
304 out += scnprintf(buf + out, len - out,
305 "%10s => State: %u Descriptor: %llu Size: %u bits "
306 "Default: %u bits\n",
307 "LocalAlloc", osb->local_alloc_state,
308 (unsigned long long)osb->la_last_gd,
309 osb->local_alloc_bits, osb->local_alloc_default_bits);
311 spin_lock(&osb->osb_lock);
312 out += scnprintf(buf + out, len - out,
313 "%10s => InodeSlot: %d StolenInodes: %d, "
314 "MetaSlot: %d StolenMeta: %d\n", "Steal",
315 osb->s_inode_steal_slot,
316 atomic_read(&osb->s_num_inodes_stolen),
317 osb->s_meta_steal_slot,
318 atomic_read(&osb->s_num_meta_stolen));
319 spin_unlock(&osb->osb_lock);
321 out += scnprintf(buf + out, len - out, "OrphanScan => ");
322 out += scnprintf(buf + out, len - out, "Local: %u Global: %u ",
323 os->os_count, os->os_seqno);
324 out += scnprintf(buf + out, len - out, " Last Scan: ");
325 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
326 out += scnprintf(buf + out, len - out, "Disabled\n");
328 out += scnprintf(buf + out, len - out, "%lu seconds ago\n",
329 (unsigned long)(ktime_get_seconds() - os->os_scantime));
331 out += scnprintf(buf + out, len - out, "%10s => %3s %10s\n",
332 "Slots", "Num", "RecoGen");
333 for (i = 0; i < osb->max_slots; ++i) {
334 out += scnprintf(buf + out, len - out,
335 "%10s %c %3d %10d\n",
337 (i == osb->slot_num ? '*' : ' '),
338 i, osb->slot_recovery_generations[i]);
344 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
346 struct ocfs2_super *osb = inode->i_private;
349 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
353 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
355 file->private_data = buf;
362 static int ocfs2_debug_release(struct inode *inode, struct file *file)
364 kfree(file->private_data);
368 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
369 size_t nbytes, loff_t *ppos)
371 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
372 i_size_read(file->f_mapping->host));
375 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
379 static int ocfs2_debug_release(struct inode *inode, struct file *file)
383 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
384 size_t nbytes, loff_t *ppos)
388 #endif /* CONFIG_DEBUG_FS */
390 static const struct file_operations ocfs2_osb_debug_fops = {
391 .open = ocfs2_osb_debug_open,
392 .release = ocfs2_debug_release,
393 .read = ocfs2_debug_read,
394 .llseek = generic_file_llseek,
397 static int ocfs2_sync_fs(struct super_block *sb, int wait)
401 struct ocfs2_super *osb = OCFS2_SB(sb);
403 if (ocfs2_is_hard_readonly(osb))
407 status = ocfs2_flush_truncate_log(osb);
411 ocfs2_schedule_truncate_log_flush(osb, 0);
414 if (jbd2_journal_start_commit(osb->journal->j_journal,
417 jbd2_log_wait_commit(osb->journal->j_journal,
423 static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
425 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
426 && (ino == USER_QUOTA_SYSTEM_INODE
427 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
429 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
430 && (ino == GROUP_QUOTA_SYSTEM_INODE
431 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
436 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
438 struct inode *new = NULL;
442 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
444 status = PTR_ERR(new);
448 osb->root_inode = new;
450 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
452 status = PTR_ERR(new);
456 osb->sys_root_inode = new;
458 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
459 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
460 if (!ocfs2_need_system_inode(osb, i))
462 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
464 ocfs2_release_system_inodes(osb);
465 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
467 mlog(ML_ERROR, "Unable to load system inode %d, "
468 "possibly corrupt fs?", i);
471 // the array now has one ref, so drop this one
481 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
483 struct inode *new = NULL;
487 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
488 i < NUM_SYSTEM_INODES;
490 if (!ocfs2_need_system_inode(osb, i))
492 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
494 ocfs2_release_system_inodes(osb);
495 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
496 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
497 status, i, osb->slot_num);
500 /* the array now has one ref, so drop this one */
510 static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
515 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
516 inode = osb->global_system_inodes[i];
519 osb->global_system_inodes[i] = NULL;
523 inode = osb->sys_root_inode;
526 osb->sys_root_inode = NULL;
529 inode = osb->root_inode;
532 osb->root_inode = NULL;
535 if (!osb->local_system_inodes)
538 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
539 if (osb->local_system_inodes[i]) {
540 iput(osb->local_system_inodes[i]);
541 osb->local_system_inodes[i] = NULL;
545 kfree(osb->local_system_inodes);
546 osb->local_system_inodes = NULL;
549 /* We're allocating fs objects, use GFP_NOFS */
550 static struct inode *ocfs2_alloc_inode(struct super_block *sb)
552 struct ocfs2_inode_info *oi;
554 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
559 oi->i_datasync_tid = 0;
560 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
562 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
563 return &oi->vfs_inode;
566 static void ocfs2_free_inode(struct inode *inode)
568 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
571 static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
574 unsigned int bytes = 1 << cbits;
575 unsigned int trim = bytes;
576 unsigned int bitshift = 32;
579 * i_size and all block offsets in ocfs2 are always 64 bits
580 * wide. i_clusters is 32 bits, in cluster-sized units. So on
581 * 64 bit platforms, cluster size will be the limiting factor.
584 #if BITS_PER_LONG == 32
585 BUILD_BUG_ON(sizeof(sector_t) != 8);
587 * We might be limited by page cache size.
589 if (bytes > PAGE_SIZE) {
593 * Shift by 31 here so that we don't get larger than
601 * Trim by a whole cluster when we can actually approach the
602 * on-disk limits. Otherwise we can overflow i_clusters when
603 * an extent start is at the max offset.
605 return (((unsigned long long)bytes) << bitshift) - trim;
608 static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
610 int incompat_features;
612 struct mount_options parsed_options;
613 struct ocfs2_super *osb = OCFS2_SB(sb);
618 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
619 !ocfs2_check_set_options(sb, &parsed_options)) {
624 tmp = OCFS2_MOUNT_NOCLUSTER;
625 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
627 mlog(ML_ERROR, "Cannot change nocluster option on remount\n");
631 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
633 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
635 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
639 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
640 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
642 mlog(ML_ERROR, "Cannot change data mode on remount\n");
646 /* Probably don't want this on remount; it might
647 * mess with other nodes */
648 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
649 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
651 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
655 /* We're going to/from readonly mode. */
656 if ((bool)(*flags & SB_RDONLY) != sb_rdonly(sb)) {
657 /* Disable quota accounting before remounting RO */
658 if (*flags & SB_RDONLY) {
659 ret = ocfs2_susp_quotas(osb, 0);
663 /* Lock here so the check of HARD_RO and the potential
664 * setting of SOFT_RO is atomic. */
665 spin_lock(&osb->osb_lock);
666 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
667 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
672 if (*flags & SB_RDONLY) {
673 sb->s_flags |= SB_RDONLY;
674 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
676 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
677 mlog(ML_ERROR, "Cannot remount RDWR "
678 "filesystem due to previous errors.\n");
682 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
683 if (incompat_features) {
684 mlog(ML_ERROR, "Cannot remount RDWR because "
685 "of unsupported optional features "
686 "(%x).\n", incompat_features);
690 sb->s_flags &= ~SB_RDONLY;
691 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
693 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
695 spin_unlock(&osb->osb_lock);
696 /* Enable quota accounting after remounting RW */
697 if (!ret && !(*flags & SB_RDONLY)) {
698 if (sb_any_quota_suspended(sb))
699 ret = ocfs2_susp_quotas(osb, 1);
701 ret = ocfs2_enable_quotas(osb);
703 /* Return back changes... */
704 spin_lock(&osb->osb_lock);
705 sb->s_flags |= SB_RDONLY;
706 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
707 spin_unlock(&osb->osb_lock);
714 /* Only save off the new mount options in case of a successful
716 osb->s_mount_opt = parsed_options.mount_opt;
717 osb->s_atime_quantum = parsed_options.atime_quantum;
718 osb->preferred_slot = parsed_options.slot;
719 if (parsed_options.commit_interval)
720 osb->osb_commit_interval = parsed_options.commit_interval;
722 if (!ocfs2_is_hard_readonly(osb))
723 ocfs2_set_journal_params(osb);
725 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
726 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
733 static int ocfs2_sb_probe(struct super_block *sb,
734 struct buffer_head **bh,
736 struct ocfs2_blockcheck_stats *stats)
739 struct ocfs1_vol_disk_hdr *hdr;
740 struct ocfs2_dinode *di;
746 *sector_size = bdev_logical_block_size(sb->s_bdev);
747 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
748 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
749 *sector_size, OCFS2_MAX_BLOCKSIZE);
754 /* Can this really happen? */
755 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
756 *sector_size = OCFS2_MIN_BLOCKSIZE;
758 /* check block zero for old format */
759 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
764 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
765 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
766 mlog(ML_ERROR, "incompatible version: %u.%u\n",
767 hdr->major_version, hdr->minor_version);
770 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
771 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
772 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
779 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
780 "upgraded before mounting with ocfs v2\n");
785 * Now check at magic offset for 512, 1024, 2048, 4096
786 * blocksizes. 4096 is the maximum blocksize because it is
787 * the minimum clustersize.
790 for (blksize = *sector_size;
791 blksize <= OCFS2_MAX_BLOCKSIZE;
793 tmpstat = ocfs2_get_sector(sb, bh,
794 OCFS2_SUPER_BLOCK_BLKNO,
801 di = (struct ocfs2_dinode *) (*bh)->b_data;
802 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
803 spin_lock_init(&stats->b_lock);
804 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
809 if (tmpstat != -EAGAIN) {
819 static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
821 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
823 if (osb->s_mount_opt & hb_enabled) {
824 if (ocfs2_mount_local(osb)) {
825 mlog(ML_ERROR, "Cannot heartbeat on a locally "
826 "mounted device.\n");
829 if (ocfs2_userspace_stack(osb)) {
830 mlog(ML_ERROR, "Userspace stack expected, but "
831 "o2cb heartbeat arguments passed to mount\n");
834 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
835 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
836 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
837 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
838 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
843 if (!(osb->s_mount_opt & hb_enabled)) {
844 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
845 !ocfs2_userspace_stack(osb)) {
846 mlog(ML_ERROR, "Heartbeat has to be started to mount "
847 "a read-write clustered device.\n");
856 * If we're using a userspace stack, mount should have passed
857 * a name that matches the disk. If not, mount should not
858 * have passed a stack.
860 static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
861 struct mount_options *mopt)
863 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
865 "cluster stack passed to mount, but this filesystem "
866 "does not support it\n");
870 if (ocfs2_userspace_stack(osb) &&
871 !(osb->s_mount_opt & OCFS2_MOUNT_NOCLUSTER) &&
872 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
873 OCFS2_STACK_LABEL_LEN)) {
875 "cluster stack passed to mount (\"%s\") does not "
876 "match the filesystem (\"%s\")\n",
878 osb->osb_cluster_stack);
885 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
888 struct super_block *sb = osb->sb;
889 unsigned int feature[OCFS2_MAXQUOTAS] = {
890 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
891 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
894 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
895 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
898 status = dquot_resume(sb, type);
900 struct ocfs2_mem_dqinfo *oinfo;
902 /* Cancel periodic syncing before suspending */
903 oinfo = sb_dqinfo(sb, type)->dqi_priv;
904 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
905 status = dquot_suspend(sb, type);
911 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
912 "remount (error = %d).\n", status);
916 static int ocfs2_enable_quotas(struct ocfs2_super *osb)
918 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
919 struct super_block *sb = osb->sb;
920 unsigned int feature[OCFS2_MAXQUOTAS] = {
921 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
922 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
923 unsigned int ino[OCFS2_MAXQUOTAS] = {
924 LOCAL_USER_QUOTA_SYSTEM_INODE,
925 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
929 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
930 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
931 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
933 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
939 status = dquot_load_quota_inode(inode[type], type, QFMT_OCFS2,
940 DQUOT_USAGE_ENABLED);
945 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
949 ocfs2_disable_quotas(osb);
950 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
956 static void ocfs2_disable_quotas(struct ocfs2_super *osb)
960 struct super_block *sb = osb->sb;
961 struct ocfs2_mem_dqinfo *oinfo;
963 /* We mostly ignore errors in this function because there's not much
964 * we can do when we see them */
965 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
966 if (!sb_has_quota_loaded(sb, type))
968 oinfo = sb_dqinfo(sb, type)->dqi_priv;
969 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
970 inode = igrab(sb->s_dquot.files[type]);
971 /* Turn off quotas. This will remove all dquot structures from
972 * memory and so they will be automatically synced to global
974 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
975 DQUOT_LIMITS_ENABLED);
980 static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
983 int status, sector_size;
984 struct mount_options parsed_options;
985 struct inode *inode = NULL;
986 struct ocfs2_super *osb = NULL;
987 struct buffer_head *bh = NULL;
989 struct ocfs2_blockcheck_stats stats;
991 trace_ocfs2_fill_super(sb, data, silent);
993 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
995 goto read_super_error;
998 /* probe for superblock */
999 status = ocfs2_sb_probe(sb, &bh, §or_size, &stats);
1001 mlog(ML_ERROR, "superblock probe failed!\n");
1002 goto read_super_error;
1005 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
1009 goto read_super_error;
1014 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1016 goto read_super_error;
1018 osb->s_mount_opt = parsed_options.mount_opt;
1019 osb->s_atime_quantum = parsed_options.atime_quantum;
1020 osb->preferred_slot = parsed_options.slot;
1021 osb->osb_commit_interval = parsed_options.commit_interval;
1023 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
1024 osb->osb_resv_level = parsed_options.resv_level;
1025 osb->osb_dir_resv_level = parsed_options.resv_level;
1026 if (parsed_options.dir_resv_level == -1)
1027 osb->osb_dir_resv_level = parsed_options.resv_level;
1029 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
1031 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1033 goto read_super_error;
1035 sb->s_magic = OCFS2_SUPER_MAGIC;
1037 sb->s_flags = (sb->s_flags & ~(SB_POSIXACL | SB_NOSEC)) |
1038 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? SB_POSIXACL : 0);
1040 /* Hard readonly mode only if: bdev_read_only, SB_RDONLY,
1042 if (bdev_read_only(sb->s_bdev)) {
1043 if (!sb_rdonly(sb)) {
1045 mlog(ML_ERROR, "Readonly device detected but readonly "
1046 "mount was not specified.\n");
1047 goto read_super_error;
1050 /* You should not be able to start a local heartbeat
1051 * on a readonly device. */
1052 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1054 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1056 goto read_super_error;
1059 status = ocfs2_check_journals_nolocks(osb);
1061 if (status == -EROFS)
1062 mlog(ML_ERROR, "Recovery required on readonly "
1063 "file system, but write access is "
1067 goto read_super_error;
1070 ocfs2_set_ro_flag(osb, 1);
1072 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1073 "Cluster services will not be used for this mount. "
1074 "Recovery will be skipped.\n", osb->dev_str);
1077 if (!ocfs2_is_hard_readonly(osb)) {
1079 ocfs2_set_ro_flag(osb, 0);
1082 status = ocfs2_verify_heartbeat(osb);
1085 goto read_super_error;
1088 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1089 ocfs2_debugfs_root);
1091 debugfs_create_file("fs_state", S_IFREG|S_IRUSR, osb->osb_debug_root,
1092 osb, &ocfs2_osb_debug_fops);
1094 if (ocfs2_meta_ecc(osb))
1095 ocfs2_blockcheck_stats_debugfs_install( &osb->osb_ecc_stats,
1096 osb->osb_debug_root);
1098 status = ocfs2_mount_volume(sb);
1100 goto read_super_error;
1102 if (osb->root_inode)
1103 inode = igrab(osb->root_inode);
1108 goto read_super_error;
1111 root = d_make_root(inode);
1115 goto read_super_error;
1120 ocfs2_complete_mount_recovery(osb);
1122 osb->osb_dev_kset = kset_create_and_add(sb->s_id, NULL,
1124 if (!osb->osb_dev_kset) {
1126 mlog(ML_ERROR, "Unable to create device kset %s.\n", sb->s_id);
1127 goto read_super_error;
1130 /* Create filecheck sysfs related directories/files at
1131 * /sys/fs/ocfs2/<devname>/filecheck */
1132 if (ocfs2_filecheck_create_sysfs(osb)) {
1134 mlog(ML_ERROR, "Unable to create filecheck sysfs directory at "
1135 "/sys/fs/ocfs2/%s/filecheck.\n", sb->s_id);
1136 goto read_super_error;
1139 if (ocfs2_mount_local(osb))
1140 snprintf(nodestr, sizeof(nodestr), "local");
1142 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1144 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
1145 "with %s data mode.\n",
1146 osb->dev_str, nodestr, osb->slot_num,
1147 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1150 if ((osb->s_mount_opt & OCFS2_MOUNT_NOCLUSTER) &&
1151 !(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT))
1152 printk(KERN_NOTICE "ocfs2: The shared device (%s) is mounted "
1153 "without cluster aware mode.\n", osb->dev_str);
1155 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1156 wake_up(&osb->osb_mount_event);
1158 /* Now we can initialize quotas because we can afford to wait
1159 * for cluster locks recovery now. That also means that truncation
1160 * log recovery can happen but that waits for proper quota setup */
1161 if (!sb_rdonly(sb)) {
1162 status = ocfs2_enable_quotas(osb);
1164 /* We have to err-out specially here because
1165 * s_root is already set */
1167 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1168 wake_up(&osb->osb_mount_event);
1173 ocfs2_complete_quota_recovery(osb);
1175 /* Now we wake up again for processes waiting for quotas */
1176 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1177 wake_up(&osb->osb_mount_event);
1179 /* Start this when the mount is almost sure of being successful */
1180 ocfs2_orphan_scan_start(osb);
1191 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1192 wake_up(&osb->osb_mount_event);
1193 ocfs2_dismount_volume(sb, 1);
1199 static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
1201 const char *dev_name,
1204 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
1207 static struct file_system_type ocfs2_fs_type = {
1208 .owner = THIS_MODULE,
1210 .mount = ocfs2_mount,
1211 .kill_sb = kill_block_super,
1212 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
1215 MODULE_ALIAS_FS("ocfs2");
1217 static int ocfs2_check_set_options(struct super_block *sb,
1218 struct mount_options *options)
1220 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1221 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1222 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1223 mlog(ML_ERROR, "User quotas were requested, but this "
1224 "filesystem does not have the feature enabled.\n");
1227 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1228 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1229 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1230 mlog(ML_ERROR, "Group quotas were requested, but this "
1231 "filesystem does not have the feature enabled.\n");
1234 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1235 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1236 mlog(ML_ERROR, "ACL support requested but extended attributes "
1237 "feature is not enabled\n");
1240 /* No ACL setting specified? Use XATTR feature... */
1241 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1242 OCFS2_MOUNT_NO_POSIX_ACL))) {
1243 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1244 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1246 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1251 static int ocfs2_parse_options(struct super_block *sb,
1253 struct mount_options *mopt,
1256 int status, user_stack = 0;
1260 substring_t args[MAX_OPT_ARGS];
1262 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
1264 mopt->commit_interval = 0;
1265 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
1266 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1267 mopt->slot = OCFS2_INVALID_SLOT;
1268 mopt->localalloc_opt = -1;
1269 mopt->cluster_stack[0] = '\0';
1270 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
1271 mopt->dir_resv_level = -1;
1278 while ((p = strsep(&options, ",")) != NULL) {
1282 token = match_token(p, tokens, args);
1285 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
1288 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1291 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
1294 if (match_int(&args[0], &option)) {
1299 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
1301 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
1304 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
1307 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
1310 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1311 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1312 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
1315 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1316 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1317 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_ROFS;
1320 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1321 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1322 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_CONT;
1324 case Opt_data_ordered:
1325 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
1327 case Opt_data_writeback:
1328 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
1330 case Opt_user_xattr:
1331 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1333 case Opt_nouser_xattr:
1334 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1336 case Opt_atime_quantum:
1337 if (match_int(&args[0], &option)) {
1342 mopt->atime_quantum = option;
1345 if (match_int(&args[0], &option)) {
1350 mopt->slot = (u16)option;
1353 if (match_int(&args[0], &option)) {
1360 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
1361 mopt->commit_interval = HZ * option;
1363 case Opt_localalloc:
1364 if (match_int(&args[0], &option)) {
1369 mopt->localalloc_opt = option;
1371 case Opt_localflocks:
1373 * Changing this during remount could race
1374 * flock() requests, or "unbalance" existing
1375 * ones (e.g., a lock is taken in one mode but
1376 * dropped in the other). If users care enough
1377 * to flip locking modes during remount, we
1378 * could add a "local" flag to individual
1379 * flock structures for proper tracking of
1383 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1386 /* Check both that the option we were passed
1387 * is of the right length and that it is a proper
1388 * string of the right length.
1390 if (((args[0].to - args[0].from) !=
1391 OCFS2_STACK_LABEL_LEN) ||
1392 (strnlen(args[0].from,
1393 OCFS2_STACK_LABEL_LEN) !=
1394 OCFS2_STACK_LABEL_LEN)) {
1396 "Invalid cluster_stack option\n");
1400 memcpy(mopt->cluster_stack, args[0].from,
1401 OCFS2_STACK_LABEL_LEN);
1402 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
1404 * Open code the memcmp here as we don't have
1406 * ocfs2_userspace_stack().
1408 if (memcmp(mopt->cluster_stack,
1409 OCFS2_CLASSIC_CLUSTER_STACK,
1410 OCFS2_STACK_LABEL_LEN))
1414 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1417 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1420 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1422 case Opt_coherency_buffered:
1423 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1425 case Opt_coherency_full:
1426 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1429 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1430 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
1433 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1434 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1436 case Opt_resv_level:
1439 if (match_int(&args[0], &option)) {
1443 if (option >= OCFS2_MIN_RESV_LEVEL &&
1444 option < OCFS2_MAX_RESV_LEVEL)
1445 mopt->resv_level = option;
1447 case Opt_dir_resv_level:
1450 if (match_int(&args[0], &option)) {
1454 if (option >= OCFS2_MIN_RESV_LEVEL &&
1455 option < OCFS2_MAX_RESV_LEVEL)
1456 mopt->dir_resv_level = option;
1458 case Opt_journal_async_commit:
1459 mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
1462 mopt->mount_opt |= OCFS2_MOUNT_NOCLUSTER;
1466 "Unrecognized mount option \"%s\" "
1467 "or missing value\n", p);
1473 if (user_stack == 0) {
1474 /* Ensure only one heartbeat mode */
1475 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1476 OCFS2_MOUNT_HB_GLOBAL |
1477 OCFS2_MOUNT_HB_NONE);
1478 if (hweight32(tmp) != 1) {
1479 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1491 static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
1493 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
1494 unsigned long opts = osb->s_mount_opt;
1495 unsigned int local_alloc_megs;
1497 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1498 seq_printf(s, ",_netdev");
1499 if (opts & OCFS2_MOUNT_HB_LOCAL)
1500 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1502 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1504 seq_printf(s, ",%s", OCFS2_HB_NONE);
1506 if (opts & OCFS2_MOUNT_NOINTR)
1507 seq_printf(s, ",nointr");
1509 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1510 seq_printf(s, ",data=writeback");
1512 seq_printf(s, ",data=ordered");
1514 if (opts & OCFS2_MOUNT_BARRIER)
1515 seq_printf(s, ",barrier=1");
1517 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1518 seq_printf(s, ",errors=panic");
1519 else if (opts & OCFS2_MOUNT_ERRORS_CONT)
1520 seq_printf(s, ",errors=continue");
1522 seq_printf(s, ",errors=remount-ro");
1524 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1525 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1527 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
1529 if (osb->osb_commit_interval)
1530 seq_printf(s, ",commit=%u",
1531 (unsigned) (osb->osb_commit_interval / HZ));
1533 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
1534 if (local_alloc_megs != ocfs2_la_default_mb(osb))
1535 seq_printf(s, ",localalloc=%d", local_alloc_megs);
1537 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1538 seq_printf(s, ",localflocks,");
1540 if (osb->osb_cluster_stack[0])
1541 seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack,
1542 OCFS2_STACK_LABEL_LEN);
1543 if (opts & OCFS2_MOUNT_USRQUOTA)
1544 seq_printf(s, ",usrquota");
1545 if (opts & OCFS2_MOUNT_GRPQUOTA)
1546 seq_printf(s, ",grpquota");
1548 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1549 seq_printf(s, ",coherency=buffered");
1551 seq_printf(s, ",coherency=full");
1553 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1554 seq_printf(s, ",nouser_xattr");
1556 seq_printf(s, ",user_xattr");
1558 if (opts & OCFS2_MOUNT_INODE64)
1559 seq_printf(s, ",inode64");
1561 if (opts & OCFS2_MOUNT_POSIX_ACL)
1562 seq_printf(s, ",acl");
1564 seq_printf(s, ",noacl");
1566 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1567 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1569 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1570 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1572 if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
1573 seq_printf(s, ",journal_async_commit");
1575 if (opts & OCFS2_MOUNT_NOCLUSTER)
1576 seq_printf(s, ",nocluster");
1581 static int __init ocfs2_init(void)
1585 status = init_ocfs2_uptodate_cache();
1589 status = ocfs2_initialize_mem_caches();
1593 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1595 ocfs2_set_locking_protocol();
1597 status = register_quota_format(&ocfs2_quota_format);
1600 status = register_filesystem(&ocfs2_fs_type);
1604 unregister_quota_format(&ocfs2_quota_format);
1606 debugfs_remove(ocfs2_debugfs_root);
1607 ocfs2_free_mem_caches();
1609 exit_ocfs2_uptodate_cache();
1615 static void __exit ocfs2_exit(void)
1617 unregister_quota_format(&ocfs2_quota_format);
1619 debugfs_remove(ocfs2_debugfs_root);
1621 ocfs2_free_mem_caches();
1623 unregister_filesystem(&ocfs2_fs_type);
1625 exit_ocfs2_uptodate_cache();
1628 static void ocfs2_put_super(struct super_block *sb)
1630 trace_ocfs2_put_super(sb);
1632 ocfs2_sync_blockdev(sb);
1633 ocfs2_dismount_volume(sb, 0);
1636 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
1638 struct ocfs2_super *osb;
1639 u32 numbits, freebits;
1641 struct ocfs2_dinode *bm_lock;
1642 struct buffer_head *bh = NULL;
1643 struct inode *inode = NULL;
1645 trace_ocfs2_statfs(dentry->d_sb, buf);
1647 osb = OCFS2_SB(dentry->d_sb);
1649 inode = ocfs2_get_system_file_inode(osb,
1650 GLOBAL_BITMAP_SYSTEM_INODE,
1651 OCFS2_INVALID_SLOT);
1653 mlog(ML_ERROR, "failed to get bitmap inode\n");
1658 status = ocfs2_inode_lock(inode, &bh, 0);
1664 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1666 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1667 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1669 buf->f_type = OCFS2_SUPER_MAGIC;
1670 buf->f_bsize = dentry->d_sb->s_blocksize;
1671 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1672 buf->f_blocks = ((sector_t) numbits) *
1673 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1674 buf->f_bfree = ((sector_t) freebits) *
1675 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1676 buf->f_bavail = buf->f_bfree;
1677 buf->f_files = numbits;
1678 buf->f_ffree = freebits;
1679 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1681 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1682 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
1686 ocfs2_inode_unlock(inode, 0);
1697 static void ocfs2_inode_init_once(void *data)
1699 struct ocfs2_inode_info *oi = data;
1702 oi->ip_open_count = 0;
1703 spin_lock_init(&oi->ip_lock);
1704 ocfs2_extent_map_init(&oi->vfs_inode);
1705 INIT_LIST_HEAD(&oi->ip_io_markers);
1706 INIT_LIST_HEAD(&oi->ip_unwritten_list);
1707 oi->ip_dir_start_lookup = 0;
1708 init_rwsem(&oi->ip_alloc_sem);
1709 init_rwsem(&oi->ip_xattr_sem);
1710 mutex_init(&oi->ip_io_mutex);
1712 oi->ip_blkno = 0ULL;
1713 oi->ip_clusters = 0;
1714 oi->ip_next_orphan = NULL;
1716 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1718 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
1719 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
1720 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
1722 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
1723 &ocfs2_inode_caching_ops);
1725 inode_init_once(&oi->vfs_inode);
1728 static int ocfs2_initialize_mem_caches(void)
1730 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
1731 sizeof(struct ocfs2_inode_info),
1733 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1734 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
1735 ocfs2_inode_init_once);
1736 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1737 sizeof(struct ocfs2_dquot),
1739 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1742 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1743 sizeof(struct ocfs2_quota_chunk),
1745 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1747 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1748 !ocfs2_qf_chunk_cachep) {
1749 kmem_cache_destroy(ocfs2_inode_cachep);
1750 kmem_cache_destroy(ocfs2_dquot_cachep);
1751 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1758 static void ocfs2_free_mem_caches(void)
1761 * Make sure all delayed rcu free inodes are flushed before we
1765 kmem_cache_destroy(ocfs2_inode_cachep);
1766 ocfs2_inode_cachep = NULL;
1768 kmem_cache_destroy(ocfs2_dquot_cachep);
1769 ocfs2_dquot_cachep = NULL;
1771 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1772 ocfs2_qf_chunk_cachep = NULL;
1775 static int ocfs2_get_sector(struct super_block *sb,
1776 struct buffer_head **bh,
1780 if (!sb_set_blocksize(sb, sect_size)) {
1781 mlog(ML_ERROR, "unable to set blocksize\n");
1785 *bh = sb_getblk(sb, block);
1787 mlog_errno(-ENOMEM);
1791 if (!buffer_dirty(*bh))
1792 clear_buffer_uptodate(*bh);
1794 ll_rw_block(REQ_OP_READ, 0, 1, bh);
1795 wait_on_buffer(*bh);
1796 if (!buffer_uptodate(*bh)) {
1806 static int ocfs2_mount_volume(struct super_block *sb)
1809 int unlock_super = 0;
1810 struct ocfs2_super *osb = OCFS2_SB(sb);
1812 if (ocfs2_is_hard_readonly(osb))
1815 mutex_init(&osb->obs_trim_fs_mutex);
1817 status = ocfs2_dlm_init(osb);
1820 if (status == -EBADR && ocfs2_userspace_stack(osb))
1821 mlog(ML_ERROR, "couldn't mount because cluster name on"
1822 " disk does not match the running cluster name.\n");
1826 status = ocfs2_super_lock(osb, 1);
1833 /* This will load up the node map and add ourselves to it. */
1834 status = ocfs2_find_slot(osb);
1840 /* load all node-local system inodes */
1841 status = ocfs2_init_local_system_inodes(osb);
1847 status = ocfs2_check_volume(osb);
1853 status = ocfs2_truncate_log_init(osb);
1859 ocfs2_super_unlock(osb, 1);
1864 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1866 int tmp, hangup_needed = 0;
1867 struct ocfs2_super *osb = NULL;
1870 trace_ocfs2_dismount_volume(sb);
1876 /* Remove file check sysfs related directores/files,
1877 * and wait for the pending file check operations */
1878 ocfs2_filecheck_remove_sysfs(osb);
1880 kset_unregister(osb->osb_dev_kset);
1882 /* Orphan scan should be stopped as early as possible */
1883 ocfs2_orphan_scan_stop(osb);
1885 ocfs2_disable_quotas(osb);
1887 /* All dquots should be freed by now */
1888 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1889 /* Wait for worker to be done with the work structure in osb */
1890 cancel_work_sync(&osb->dquot_drop_work);
1892 ocfs2_shutdown_local_alloc(osb);
1894 ocfs2_truncate_log_shutdown(osb);
1896 /* This will disable recovery and flush any recovery work. */
1897 ocfs2_recovery_exit(osb);
1899 ocfs2_journal_shutdown(osb);
1901 ocfs2_sync_blockdev(sb);
1903 ocfs2_purge_refcount_trees(osb);
1905 /* No cluster connection means we've failed during mount, so skip
1906 * all the steps which depended on that to complete. */
1908 tmp = ocfs2_super_lock(osb, 1);
1915 if (osb->slot_num != OCFS2_INVALID_SLOT)
1916 ocfs2_put_slot(osb);
1919 ocfs2_super_unlock(osb, 1);
1921 ocfs2_release_system_inodes(osb);
1924 * If we're dismounting due to mount error, mount.ocfs2 will clean
1925 * up heartbeat. If we're a local mount, there is no heartbeat.
1926 * If we failed before we got a uuid_str yet, we can't stop
1927 * heartbeat. Otherwise, do it.
1929 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1930 !ocfs2_is_hard_readonly(osb))
1934 ocfs2_dlm_shutdown(osb, hangup_needed);
1936 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
1937 debugfs_remove_recursive(osb->osb_debug_root);
1940 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
1942 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1944 if (ocfs2_mount_local(osb))
1945 snprintf(nodestr, sizeof(nodestr), "local");
1947 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1949 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1950 osb->dev_str, nodestr);
1952 ocfs2_delete_osb(osb);
1955 sb->s_fs_info = NULL;
1958 static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1959 unsigned uuid_bytes)
1964 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1966 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
1967 if (osb->uuid_str == NULL)
1970 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
1971 /* print with null */
1972 ret = snprintf(ptr, 3, "%02X", uuid[i]);
1973 if (ret != 2) /* drop super cleans up */
1975 /* then only advance past the last char */
1982 /* Make sure entire volume is addressable by our journal. Requires
1983 osb_clusters_at_boot to be valid and for the journal to have been
1984 initialized by ocfs2_journal_init(). */
1985 static int ocfs2_journal_addressable(struct ocfs2_super *osb)
1989 ocfs2_clusters_to_blocks(osb->sb,
1990 osb->osb_clusters_at_boot) - 1;
1992 /* 32-bit block number is always OK. */
1993 if (max_block <= (u32)~0ULL)
1996 /* Volume is "huge", so see if our journal is new enough to
1998 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
1999 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2000 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2001 JBD2_FEATURE_INCOMPAT_64BIT))) {
2002 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2003 "Enable the 'block64' journal option with tunefs.ocfs2");
2012 static int ocfs2_initialize_super(struct super_block *sb,
2013 struct buffer_head *bh,
2015 struct ocfs2_blockcheck_stats *stats)
2018 int i, cbits, bbits;
2019 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
2020 struct inode *inode = NULL;
2021 struct ocfs2_journal *journal;
2022 struct ocfs2_super *osb;
2025 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
2032 sb->s_fs_info = osb;
2033 sb->s_op = &ocfs2_sops;
2034 sb->s_d_op = &ocfs2_dentry_ops;
2035 sb->s_export_op = &ocfs2_export_ops;
2036 sb->s_qcop = &dquot_quotactl_sysfile_ops;
2037 sb->dq_op = &ocfs2_quota_operations;
2038 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
2039 sb->s_xattr = ocfs2_xattr_handlers;
2040 sb->s_time_gran = 1;
2041 sb->s_flags |= SB_NOATIME;
2042 /* this is needed to support O_LARGEFILE */
2043 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2044 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2045 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
2046 memcpy(&sb->s_uuid, di->id2.i_super.s_uuid,
2047 sizeof(di->id2.i_super.s_uuid));
2049 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2051 for (i = 0; i < 3; i++)
2052 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2053 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2056 osb->s_sectsize_bits = blksize_bits(sector_size);
2057 BUG_ON(!osb->s_sectsize_bits);
2059 spin_lock_init(&osb->dc_task_lock);
2060 init_waitqueue_head(&osb->dc_event);
2061 osb->dc_work_sequence = 0;
2062 osb->dc_wake_sequence = 0;
2063 INIT_LIST_HEAD(&osb->blocked_lock_list);
2064 osb->blocked_lock_count = 0;
2065 spin_lock_init(&osb->osb_lock);
2066 spin_lock_init(&osb->osb_xattr_lock);
2067 ocfs2_init_steal_slots(osb);
2069 mutex_init(&osb->system_file_mutex);
2071 atomic_set(&osb->alloc_stats.moves, 0);
2072 atomic_set(&osb->alloc_stats.local_data, 0);
2073 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2074 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2075 atomic_set(&osb->alloc_stats.bg_extends, 0);
2077 /* Copy the blockcheck stats from the superblock probe */
2078 osb->osb_ecc_stats = *stats;
2080 ocfs2_init_node_maps(osb);
2082 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2083 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2085 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2086 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2087 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2093 ocfs2_orphan_scan_init(osb);
2095 status = ocfs2_recovery_init(osb);
2097 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2102 init_waitqueue_head(&osb->checkpoint_event);
2104 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2106 osb->slot_num = OCFS2_INVALID_SLOT;
2108 osb->s_xattr_inline_size = le16_to_cpu(
2109 di->id2.i_super.s_xattr_inline_size);
2111 osb->local_alloc_state = OCFS2_LA_UNUSED;
2112 osb->local_alloc_bh = NULL;
2113 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
2115 init_waitqueue_head(&osb->osb_mount_event);
2117 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2123 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2124 if (!osb->vol_label) {
2125 mlog(ML_ERROR, "unable to alloc vol label\n");
2130 osb->slot_recovery_generations =
2131 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2133 if (!osb->slot_recovery_generations) {
2139 init_waitqueue_head(&osb->osb_wipe_event);
2140 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2141 sizeof(*osb->osb_orphan_wipes),
2143 if (!osb->osb_orphan_wipes) {
2149 osb->osb_rf_lock_tree = RB_ROOT;
2151 osb->s_feature_compat =
2152 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2153 osb->s_feature_ro_compat =
2154 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2155 osb->s_feature_incompat =
2156 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2158 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2159 mlog(ML_ERROR, "couldn't mount because of unsupported "
2160 "optional features (%x).\n", i);
2164 if (!sb_rdonly(osb->sb) && (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
2165 mlog(ML_ERROR, "couldn't mount RDWR because of "
2166 "unsupported optional features (%x).\n", i);
2171 if (ocfs2_clusterinfo_valid(osb)) {
2172 osb->osb_stackflags =
2173 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
2174 strlcpy(osb->osb_cluster_stack,
2175 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
2176 OCFS2_STACK_LABEL_LEN + 1);
2177 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2179 "couldn't mount because of an invalid "
2180 "cluster stack label (%s) \n",
2181 osb->osb_cluster_stack);
2185 strlcpy(osb->osb_cluster_name,
2186 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
2187 OCFS2_CLUSTER_NAME_LEN + 1);
2189 /* The empty string is identical with classic tools that
2190 * don't know about s_cluster_info. */
2191 osb->osb_cluster_stack[0] = '\0';
2194 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2197 * This should be done in ocfs2_journal_init(), but unknown
2198 * ordering issues will cause the filesystem to crash.
2199 * If anyone wants to figure out what part of the code
2200 * refers to osb->journal before ocfs2_journal_init() is run,
2203 /* initialize our journal structure */
2205 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
2207 mlog(ML_ERROR, "unable to alloc journal\n");
2211 osb->journal = journal;
2212 journal->j_osb = osb;
2214 atomic_set(&journal->j_num_trans, 0);
2215 init_rwsem(&journal->j_trans_barrier);
2216 init_waitqueue_head(&journal->j_checkpointed);
2217 spin_lock_init(&journal->j_lock);
2218 journal->j_trans_id = (unsigned long) 1;
2219 INIT_LIST_HEAD(&journal->j_la_cleanups);
2220 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
2221 journal->j_state = OCFS2_JOURNAL_FREE;
2223 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2224 init_llist_head(&osb->dquot_drop_list);
2226 /* get some pseudo constants for clustersize bits */
2227 osb->s_clustersize_bits =
2228 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2229 osb->s_clustersize = 1 << osb->s_clustersize_bits;
2231 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2232 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2233 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2234 osb->s_clustersize);
2239 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2240 le32_to_cpu(di->i_clusters));
2242 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2245 mlog(ML_ERROR, "Volume too large "
2246 "to mount safely on this system");
2251 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2252 sizeof(di->id2.i_super.s_uuid))) {
2253 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2258 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2259 OCFS2_MAX_VOL_LABEL_LEN);
2260 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2261 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2262 osb->first_cluster_group_blkno =
2263 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2264 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
2265 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2266 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2267 (unsigned long long)osb->root_blkno,
2268 (unsigned long long)osb->system_dir_blkno,
2269 osb->s_clustersize_bits);
2271 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2272 if (!osb->osb_dlm_debug) {
2278 atomic_set(&osb->vol_state, VOLUME_INIT);
2280 /* load root, system_dir, and all global system inodes */
2281 status = ocfs2_init_global_system_inodes(osb);
2290 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2291 OCFS2_INVALID_SLOT);
2298 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
2299 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
2302 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2303 osb->s_feature_incompat) * 8;
2305 status = ocfs2_init_slot_info(osb);
2310 cleancache_init_shared_fs(sb);
2312 osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
2313 if (!osb->ocfs2_wq) {
2323 * will return: -EAGAIN if it is ok to keep searching for superblocks
2324 * -EINVAL if there is a bad superblock
2327 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2328 struct buffer_head *bh,
2330 struct ocfs2_blockcheck_stats *stats)
2332 int status = -EAGAIN;
2334 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2335 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
2336 /* We have to do a raw check of the feature here */
2337 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2338 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2339 status = ocfs2_block_check_validate(bh->b_data,
2347 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2348 mlog(ML_ERROR, "found superblock with incorrect block "
2349 "size: found %u, should be %u\n",
2350 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2352 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2353 OCFS2_MAJOR_REV_LEVEL ||
2354 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2355 OCFS2_MINOR_REV_LEVEL) {
2356 mlog(ML_ERROR, "found superblock with bad version: "
2357 "found %u.%u, should be %u.%u\n",
2358 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2359 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2360 OCFS2_MAJOR_REV_LEVEL,
2361 OCFS2_MINOR_REV_LEVEL);
2362 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2363 mlog(ML_ERROR, "bad block number on superblock: "
2364 "found %llu, should be %llu\n",
2365 (unsigned long long)le64_to_cpu(di->i_blkno),
2366 (unsigned long long)bh->b_blocknr);
2367 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2368 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2369 mlog(ML_ERROR, "bad cluster size found: %u\n",
2370 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2371 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2372 mlog(ML_ERROR, "bad root_blkno: 0\n");
2373 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2374 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2375 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2377 "Superblock slots found greater than file system "
2378 "maximum: found %u, max %u\n",
2379 le16_to_cpu(di->id2.i_super.s_max_slots),
2388 if (status && status != -EAGAIN)
2393 static int ocfs2_check_volume(struct ocfs2_super *osb)
2398 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2402 /* Init our journal object. */
2403 status = ocfs2_journal_init(osb->journal, &dirty);
2405 mlog(ML_ERROR, "Could not initialize journal!\n");
2409 /* Now that journal has been initialized, check to make sure
2410 entire volume is addressable. */
2411 status = ocfs2_journal_addressable(osb);
2415 /* If the journal was unmounted cleanly then we don't want to
2416 * recover anything. Otherwise, journal_load will do that
2417 * dirty work for us :) */
2419 status = ocfs2_journal_wipe(osb->journal, 0);
2425 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2426 "unmounted cleanly, recovering it.\n", osb->dev_str);
2429 local = ocfs2_mount_local(osb);
2431 /* will play back anything left in the journal. */
2432 status = ocfs2_journal_load(osb->journal, local, dirty);
2434 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2438 if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
2439 jbd2_journal_set_features(osb->journal->j_journal,
2440 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2441 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2443 jbd2_journal_clear_features(osb->journal->j_journal,
2444 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2445 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2448 /* recover my local alloc if we didn't unmount cleanly. */
2449 status = ocfs2_begin_local_alloc_recovery(osb,
2456 /* we complete the recovery process after we've marked
2457 * ourselves as mounted. */
2460 status = ocfs2_load_local_alloc(osb);
2467 /* Recovery will be completed after we've mounted the
2468 * rest of the volume. */
2469 osb->local_alloc_copy = local_alloc;
2473 /* go through each journal, trylock it and if you get the
2474 * lock, and it's marked as dirty, set the bit in the recover
2475 * map and launch a recovery thread for it. */
2476 status = ocfs2_mark_dead_nodes(osb);
2482 status = ocfs2_compute_replay_slots(osb);
2495 * The routine gets called from dismount or close whenever a dismount on
2496 * volume is requested and the osb open count becomes 1.
2497 * It will remove the osb from the global list and also free up all the
2498 * initialized resources and fileobject.
2500 static void ocfs2_delete_osb(struct ocfs2_super *osb)
2502 /* This function assumes that the caller has the main osb resource */
2504 /* ocfs2_initializer_super have already created this workqueue */
2506 destroy_workqueue(osb->ocfs2_wq);
2508 ocfs2_free_slot_info(osb);
2510 kfree(osb->osb_orphan_wipes);
2511 kfree(osb->slot_recovery_generations);
2513 * This belongs in journal shutdown, but because we have to
2514 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2517 kfree(osb->journal);
2518 kfree(osb->local_alloc_copy);
2519 kfree(osb->uuid_str);
2520 kfree(osb->vol_label);
2521 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2522 memset(osb, 0, sizeof(struct ocfs2_super));
2525 /* Depending on the mount option passed, perform one of the following:
2526 * Put OCFS2 into a readonly state (default)
2527 * Return EIO so that only the process errs
2528 * Fix the error as if fsck.ocfs2 -y
2531 static int ocfs2_handle_error(struct super_block *sb)
2533 struct ocfs2_super *osb = OCFS2_SB(sb);
2536 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2537 pr_crit("On-disk corruption discovered. "
2538 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
2540 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) {
2541 panic("OCFS2: (device %s): panic forced after error\n",
2543 } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) {
2544 pr_crit("OCFS2: Returning error to the calling process.\n");
2546 } else { /* default option */
2548 if (sb_rdonly(sb) && (ocfs2_is_soft_readonly(osb) || ocfs2_is_hard_readonly(osb)))
2551 pr_crit("OCFS2: File system is now read-only.\n");
2552 sb->s_flags |= SB_RDONLY;
2553 ocfs2_set_ro_flag(osb, 0);
2559 int __ocfs2_error(struct super_block *sb, const char *function,
2560 const char *fmt, ...)
2562 struct va_format vaf;
2565 va_start(args, fmt);
2569 /* Not using mlog here because we want to show the actual
2570 * function the error came from. */
2571 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV",
2572 sb->s_id, function, &vaf);
2576 return ocfs2_handle_error(sb);
2579 /* Handle critical errors. This is intentionally more drastic than
2580 * ocfs2_handle_error, so we only use for things like journal errors,
2582 void __ocfs2_abort(struct super_block *sb, const char *function,
2583 const char *fmt, ...)
2585 struct va_format vaf;
2588 va_start(args, fmt);
2593 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV",
2594 sb->s_id, function, &vaf);
2598 /* We don't have the cluster support yet to go straight to
2599 * hard readonly in here. Until then, we want to keep
2600 * ocfs2_abort() so that we can at least mark critical
2603 * TODO: This should abort the journal and alert other nodes
2604 * that our slot needs recovery. */
2606 /* Force a panic(). This stinks, but it's better than letting
2607 * things continue without having a proper hard readonly
2609 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2610 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
2611 ocfs2_handle_error(sb);
2615 * Void signal blockers, because in-kernel sigprocmask() only fails
2616 * when SIG_* is wrong.
2618 void ocfs2_block_signals(sigset_t *oldset)
2623 sigfillset(&blocked);
2624 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2628 void ocfs2_unblock_signals(sigset_t *oldset)
2630 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2634 module_init(ocfs2_init);
2635 module_exit(ocfs2_exit);