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"
77 #include "filecheck.h"
79 static struct kmem_cache *ocfs2_inode_cachep;
80 struct kmem_cache *ocfs2_dquot_cachep;
81 struct kmem_cache *ocfs2_qf_chunk_cachep;
83 /* OCFS2 needs to schedule several different types of work which
84 * require cluster locking, disk I/O, recovery waits, etc. Since these
85 * types of work tend to be heavy we avoid using the kernel events
86 * workqueue and schedule on our own. */
87 struct workqueue_struct *ocfs2_wq = NULL;
89 static struct dentry *ocfs2_debugfs_root;
91 MODULE_AUTHOR("Oracle");
92 MODULE_LICENSE("GPL");
93 MODULE_DESCRIPTION("OCFS2 cluster file system");
97 unsigned long commit_interval;
98 unsigned long mount_opt;
99 unsigned int atime_quantum;
102 unsigned int resv_level;
104 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
107 static int ocfs2_parse_options(struct super_block *sb, char *options,
108 struct mount_options *mopt,
110 static int ocfs2_check_set_options(struct super_block *sb,
111 struct mount_options *options);
112 static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
113 static void ocfs2_put_super(struct super_block *sb);
114 static int ocfs2_mount_volume(struct super_block *sb);
115 static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
116 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
117 static int ocfs2_initialize_mem_caches(void);
118 static void ocfs2_free_mem_caches(void);
119 static void ocfs2_delete_osb(struct ocfs2_super *osb);
121 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
123 static int ocfs2_sync_fs(struct super_block *sb, int wait);
125 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
126 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
127 static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
128 static int ocfs2_check_volume(struct ocfs2_super *osb);
129 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
130 struct buffer_head *bh,
132 struct ocfs2_blockcheck_stats *stats);
133 static int ocfs2_initialize_super(struct super_block *sb,
134 struct buffer_head *bh,
136 struct ocfs2_blockcheck_stats *stats);
137 static int ocfs2_get_sector(struct super_block *sb,
138 struct buffer_head **bh,
141 static struct inode *ocfs2_alloc_inode(struct super_block *sb);
142 static void ocfs2_destroy_inode(struct inode *inode);
143 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
144 static int ocfs2_enable_quotas(struct ocfs2_super *osb);
145 static void ocfs2_disable_quotas(struct ocfs2_super *osb);
147 static struct dquot **ocfs2_get_dquots(struct inode *inode)
149 return OCFS2_I(inode)->i_dquot;
152 static const struct super_operations ocfs2_sops = {
153 .statfs = ocfs2_statfs,
154 .alloc_inode = ocfs2_alloc_inode,
155 .destroy_inode = ocfs2_destroy_inode,
156 .drop_inode = ocfs2_drop_inode,
157 .evict_inode = ocfs2_evict_inode,
158 .sync_fs = ocfs2_sync_fs,
159 .put_super = ocfs2_put_super,
160 .remount_fs = ocfs2_remount,
161 .show_options = ocfs2_show_options,
162 .quota_read = ocfs2_quota_read,
163 .quota_write = ocfs2_quota_write,
164 .get_dquots = ocfs2_get_dquots,
191 Opt_coherency_buffered,
195 Opt_journal_async_commit,
200 static const match_table_t tokens = {
201 {Opt_barrier, "barrier=%u"},
202 {Opt_err_panic, "errors=panic"},
203 {Opt_err_ro, "errors=remount-ro"},
205 {Opt_nointr, "nointr"},
206 {Opt_hb_none, OCFS2_HB_NONE},
207 {Opt_hb_local, OCFS2_HB_LOCAL},
208 {Opt_hb_global, OCFS2_HB_GLOBAL},
209 {Opt_data_ordered, "data=ordered"},
210 {Opt_data_writeback, "data=writeback"},
211 {Opt_atime_quantum, "atime_quantum=%u"},
212 {Opt_slot, "preferred_slot=%u"},
213 {Opt_commit, "commit=%u"},
214 {Opt_localalloc, "localalloc=%d"},
215 {Opt_localflocks, "localflocks"},
216 {Opt_stack, "cluster_stack=%s"},
217 {Opt_user_xattr, "user_xattr"},
218 {Opt_nouser_xattr, "nouser_xattr"},
219 {Opt_inode64, "inode64"},
221 {Opt_noacl, "noacl"},
222 {Opt_usrquota, "usrquota"},
223 {Opt_grpquota, "grpquota"},
224 {Opt_coherency_buffered, "coherency=buffered"},
225 {Opt_coherency_full, "coherency=full"},
226 {Opt_resv_level, "resv_level=%u"},
227 {Opt_dir_resv_level, "dir_resv_level=%u"},
228 {Opt_journal_async_commit, "journal_async_commit"},
229 {Opt_err_cont, "errors=continue"},
233 #ifdef CONFIG_DEBUG_FS
234 static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
236 struct ocfs2_cluster_connection *cconn = osb->cconn;
237 struct ocfs2_recovery_map *rm = osb->recovery_map;
238 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
242 out += snprintf(buf + out, len - out,
243 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
244 "Device", osb->dev_str, osb->uuid_str,
245 osb->fs_generation, osb->vol_label);
247 out += snprintf(buf + out, len - out,
248 "%10s => State: %d Flags: 0x%lX\n", "Volume",
249 atomic_read(&osb->vol_state), osb->osb_flags);
251 out += snprintf(buf + out, len - out,
252 "%10s => Block: %lu Cluster: %d\n", "Sizes",
253 osb->sb->s_blocksize, osb->s_clustersize);
255 out += snprintf(buf + out, len - out,
256 "%10s => Compat: 0x%X Incompat: 0x%X "
258 "Features", osb->s_feature_compat,
259 osb->s_feature_incompat, osb->s_feature_ro_compat);
261 out += snprintf(buf + out, len - out,
262 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
263 osb->s_mount_opt, osb->s_atime_quantum);
266 out += snprintf(buf + out, len - out,
267 "%10s => Stack: %s Name: %*s "
268 "Version: %d.%d\n", "Cluster",
269 (*osb->osb_cluster_stack == '\0' ?
270 "o2cb" : osb->osb_cluster_stack),
271 cconn->cc_namelen, cconn->cc_name,
272 cconn->cc_version.pv_major,
273 cconn->cc_version.pv_minor);
276 spin_lock_irqsave(&osb->dc_task_lock, flags);
277 out += snprintf(buf + out, len - out,
278 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
279 "WorkSeq: %lu\n", "DownCnvt",
280 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
281 osb->blocked_lock_count, osb->dc_wake_sequence,
282 osb->dc_work_sequence);
283 spin_unlock_irqrestore(&osb->dc_task_lock, flags);
285 spin_lock(&osb->osb_lock);
286 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
288 (osb->recovery_thread_task ?
289 task_pid_nr(osb->recovery_thread_task) : -1));
290 if (rm->rm_used == 0)
291 out += snprintf(buf + out, len - out, " None\n");
293 for (i = 0; i < rm->rm_used; i++)
294 out += snprintf(buf + out, len - out, " %d",
296 out += snprintf(buf + out, len - out, "\n");
298 spin_unlock(&osb->osb_lock);
300 out += snprintf(buf + out, len - out,
301 "%10s => Pid: %d Interval: %lu\n", "Commit",
302 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
303 osb->osb_commit_interval);
305 out += snprintf(buf + out, len - out,
306 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
307 "Journal", osb->journal->j_state,
308 osb->journal->j_trans_id,
309 atomic_read(&osb->journal->j_num_trans));
311 out += snprintf(buf + out, len - out,
312 "%10s => GlobalAllocs: %d LocalAllocs: %d "
313 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
315 atomic_read(&osb->alloc_stats.bitmap_data),
316 atomic_read(&osb->alloc_stats.local_data),
317 atomic_read(&osb->alloc_stats.bg_allocs),
318 atomic_read(&osb->alloc_stats.moves),
319 atomic_read(&osb->alloc_stats.bg_extends));
321 out += snprintf(buf + out, len - out,
322 "%10s => State: %u Descriptor: %llu Size: %u bits "
323 "Default: %u bits\n",
324 "LocalAlloc", osb->local_alloc_state,
325 (unsigned long long)osb->la_last_gd,
326 osb->local_alloc_bits, osb->local_alloc_default_bits);
328 spin_lock(&osb->osb_lock);
329 out += snprintf(buf + out, len - out,
330 "%10s => InodeSlot: %d StolenInodes: %d, "
331 "MetaSlot: %d StolenMeta: %d\n", "Steal",
332 osb->s_inode_steal_slot,
333 atomic_read(&osb->s_num_inodes_stolen),
334 osb->s_meta_steal_slot,
335 atomic_read(&osb->s_num_meta_stolen));
336 spin_unlock(&osb->osb_lock);
338 out += snprintf(buf + out, len - out, "OrphanScan => ");
339 out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
340 os->os_count, os->os_seqno);
341 out += snprintf(buf + out, len - out, " Last Scan: ");
342 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
343 out += snprintf(buf + out, len - out, "Disabled\n");
345 out += snprintf(buf + out, len - out, "%lu seconds ago\n",
346 (get_seconds() - os->os_scantime.tv_sec));
348 out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
349 "Slots", "Num", "RecoGen");
350 for (i = 0; i < osb->max_slots; ++i) {
351 out += snprintf(buf + out, len - out,
352 "%10s %c %3d %10d\n",
354 (i == osb->slot_num ? '*' : ' '),
355 i, osb->slot_recovery_generations[i]);
361 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
363 struct ocfs2_super *osb = inode->i_private;
366 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
370 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
372 file->private_data = buf;
379 static int ocfs2_debug_release(struct inode *inode, struct file *file)
381 kfree(file->private_data);
385 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
386 size_t nbytes, loff_t *ppos)
388 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
389 i_size_read(file->f_mapping->host));
392 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
396 static int ocfs2_debug_release(struct inode *inode, struct file *file)
400 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
401 size_t nbytes, loff_t *ppos)
405 #endif /* CONFIG_DEBUG_FS */
407 static const struct file_operations ocfs2_osb_debug_fops = {
408 .open = ocfs2_osb_debug_open,
409 .release = ocfs2_debug_release,
410 .read = ocfs2_debug_read,
411 .llseek = generic_file_llseek,
414 static int ocfs2_sync_fs(struct super_block *sb, int wait)
418 struct ocfs2_super *osb = OCFS2_SB(sb);
420 if (ocfs2_is_hard_readonly(osb))
424 status = ocfs2_flush_truncate_log(osb);
428 ocfs2_schedule_truncate_log_flush(osb, 0);
431 if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal,
434 jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal,
440 static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
442 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
443 && (ino == USER_QUOTA_SYSTEM_INODE
444 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
446 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
447 && (ino == GROUP_QUOTA_SYSTEM_INODE
448 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
453 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
455 struct inode *new = NULL;
459 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
461 status = PTR_ERR(new);
465 osb->root_inode = new;
467 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
469 status = PTR_ERR(new);
473 osb->sys_root_inode = new;
475 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
476 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
477 if (!ocfs2_need_system_inode(osb, i))
479 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
481 ocfs2_release_system_inodes(osb);
484 /* FIXME: Should ERROR_RO_FS */
485 mlog(ML_ERROR, "Unable to load system inode %d, "
486 "possibly corrupt fs?", i);
489 // the array now has one ref, so drop this one
499 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
501 struct inode *new = NULL;
505 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
506 i < NUM_SYSTEM_INODES;
508 if (!ocfs2_need_system_inode(osb, i))
510 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
512 ocfs2_release_system_inodes(osb);
514 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
515 status, i, osb->slot_num);
518 /* the array now has one ref, so drop this one */
528 static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
533 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
534 inode = osb->global_system_inodes[i];
537 osb->global_system_inodes[i] = NULL;
541 inode = osb->sys_root_inode;
544 osb->sys_root_inode = NULL;
547 inode = osb->root_inode;
550 osb->root_inode = NULL;
553 if (!osb->local_system_inodes)
556 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
557 if (osb->local_system_inodes[i]) {
558 iput(osb->local_system_inodes[i]);
559 osb->local_system_inodes[i] = NULL;
563 kfree(osb->local_system_inodes);
564 osb->local_system_inodes = NULL;
567 /* We're allocating fs objects, use GFP_NOFS */
568 static struct inode *ocfs2_alloc_inode(struct super_block *sb)
570 struct ocfs2_inode_info *oi;
572 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
577 oi->i_datasync_tid = 0;
578 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
580 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
581 return &oi->vfs_inode;
584 static void ocfs2_i_callback(struct rcu_head *head)
586 struct inode *inode = container_of(head, struct inode, i_rcu);
587 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
590 static void ocfs2_destroy_inode(struct inode *inode)
592 call_rcu(&inode->i_rcu, ocfs2_i_callback);
595 static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
598 unsigned int bytes = 1 << cbits;
599 unsigned int trim = bytes;
600 unsigned int bitshift = 32;
603 * i_size and all block offsets in ocfs2 are always 64 bits
604 * wide. i_clusters is 32 bits, in cluster-sized units. So on
605 * 64 bit platforms, cluster size will be the limiting factor.
608 #if BITS_PER_LONG == 32
609 # if defined(CONFIG_LBDAF)
610 BUILD_BUG_ON(sizeof(sector_t) != 8);
612 * We might be limited by page cache size.
614 if (bytes > PAGE_CACHE_SIZE) {
615 bytes = PAGE_CACHE_SIZE;
618 * Shift by 31 here so that we don't get larger than
625 * We are limited by the size of sector_t. Use block size, as
626 * that's what we expose to the VFS.
635 * Trim by a whole cluster when we can actually approach the
636 * on-disk limits. Otherwise we can overflow i_clusters when
637 * an extent start is at the max offset.
639 return (((unsigned long long)bytes) << bitshift) - trim;
642 static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
644 int incompat_features;
646 struct mount_options parsed_options;
647 struct ocfs2_super *osb = OCFS2_SB(sb);
652 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
653 !ocfs2_check_set_options(sb, &parsed_options)) {
658 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
660 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
662 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
666 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
667 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
669 mlog(ML_ERROR, "Cannot change data mode on remount\n");
673 /* Probably don't want this on remount; it might
674 * mess with other nodes */
675 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
676 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
678 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
682 /* We're going to/from readonly mode. */
683 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
684 /* Disable quota accounting before remounting RO */
685 if (*flags & MS_RDONLY) {
686 ret = ocfs2_susp_quotas(osb, 0);
690 /* Lock here so the check of HARD_RO and the potential
691 * setting of SOFT_RO is atomic. */
692 spin_lock(&osb->osb_lock);
693 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
694 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
699 if (*flags & MS_RDONLY) {
700 sb->s_flags |= MS_RDONLY;
701 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
703 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
704 mlog(ML_ERROR, "Cannot remount RDWR "
705 "filesystem due to previous errors.\n");
709 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
710 if (incompat_features) {
711 mlog(ML_ERROR, "Cannot remount RDWR because "
712 "of unsupported optional features "
713 "(%x).\n", incompat_features);
717 sb->s_flags &= ~MS_RDONLY;
718 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
720 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
722 spin_unlock(&osb->osb_lock);
723 /* Enable quota accounting after remounting RW */
724 if (!ret && !(*flags & MS_RDONLY)) {
725 if (sb_any_quota_suspended(sb))
726 ret = ocfs2_susp_quotas(osb, 1);
728 ret = ocfs2_enable_quotas(osb);
730 /* Return back changes... */
731 spin_lock(&osb->osb_lock);
732 sb->s_flags |= MS_RDONLY;
733 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
734 spin_unlock(&osb->osb_lock);
741 /* Only save off the new mount options in case of a successful
743 osb->s_mount_opt = parsed_options.mount_opt;
744 osb->s_atime_quantum = parsed_options.atime_quantum;
745 osb->preferred_slot = parsed_options.slot;
746 if (parsed_options.commit_interval)
747 osb->osb_commit_interval = parsed_options.commit_interval;
749 if (!ocfs2_is_hard_readonly(osb))
750 ocfs2_set_journal_params(osb);
752 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
753 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
760 static int ocfs2_sb_probe(struct super_block *sb,
761 struct buffer_head **bh,
763 struct ocfs2_blockcheck_stats *stats)
766 struct ocfs1_vol_disk_hdr *hdr;
767 struct ocfs2_dinode *di;
773 *sector_size = bdev_logical_block_size(sb->s_bdev);
774 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
775 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
776 *sector_size, OCFS2_MAX_BLOCKSIZE);
781 /* Can this really happen? */
782 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
783 *sector_size = OCFS2_MIN_BLOCKSIZE;
785 /* check block zero for old format */
786 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
791 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
792 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
793 mlog(ML_ERROR, "incompatible version: %u.%u\n",
794 hdr->major_version, hdr->minor_version);
797 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
798 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
799 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
806 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
807 "upgraded before mounting with ocfs v2\n");
812 * Now check at magic offset for 512, 1024, 2048, 4096
813 * blocksizes. 4096 is the maximum blocksize because it is
814 * the minimum clustersize.
817 for (blksize = *sector_size;
818 blksize <= OCFS2_MAX_BLOCKSIZE;
820 tmpstat = ocfs2_get_sector(sb, bh,
821 OCFS2_SUPER_BLOCK_BLKNO,
828 di = (struct ocfs2_dinode *) (*bh)->b_data;
829 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
830 spin_lock_init(&stats->b_lock);
831 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
836 if (tmpstat != -EAGAIN) {
846 static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
848 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
850 if (osb->s_mount_opt & hb_enabled) {
851 if (ocfs2_mount_local(osb)) {
852 mlog(ML_ERROR, "Cannot heartbeat on a locally "
853 "mounted device.\n");
856 if (ocfs2_userspace_stack(osb)) {
857 mlog(ML_ERROR, "Userspace stack expected, but "
858 "o2cb heartbeat arguments passed to mount\n");
861 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
862 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
863 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
864 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
865 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
870 if (!(osb->s_mount_opt & hb_enabled)) {
871 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
872 !ocfs2_userspace_stack(osb)) {
873 mlog(ML_ERROR, "Heartbeat has to be started to mount "
874 "a read-write clustered device.\n");
883 * If we're using a userspace stack, mount should have passed
884 * a name that matches the disk. If not, mount should not
885 * have passed a stack.
887 static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
888 struct mount_options *mopt)
890 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
892 "cluster stack passed to mount, but this filesystem "
893 "does not support it\n");
897 if (ocfs2_userspace_stack(osb) &&
898 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
899 OCFS2_STACK_LABEL_LEN)) {
901 "cluster stack passed to mount (\"%s\") does not "
902 "match the filesystem (\"%s\")\n",
904 osb->osb_cluster_stack);
911 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
914 struct super_block *sb = osb->sb;
915 unsigned int feature[OCFS2_MAXQUOTAS] = {
916 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
917 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
920 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
921 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
924 status = dquot_resume(sb, type);
926 struct ocfs2_mem_dqinfo *oinfo;
928 /* Cancel periodic syncing before suspending */
929 oinfo = sb_dqinfo(sb, type)->dqi_priv;
930 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
931 status = dquot_suspend(sb, type);
937 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
938 "remount (error = %d).\n", status);
942 static int ocfs2_enable_quotas(struct ocfs2_super *osb)
944 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
945 struct super_block *sb = osb->sb;
946 unsigned int feature[OCFS2_MAXQUOTAS] = {
947 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
948 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
949 unsigned int ino[OCFS2_MAXQUOTAS] = {
950 LOCAL_USER_QUOTA_SYSTEM_INODE,
951 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
955 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
956 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
957 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
959 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
965 status = dquot_enable(inode[type], type, QFMT_OCFS2,
966 DQUOT_USAGE_ENABLED);
971 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
975 ocfs2_disable_quotas(osb);
976 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
982 static void ocfs2_disable_quotas(struct ocfs2_super *osb)
986 struct super_block *sb = osb->sb;
987 struct ocfs2_mem_dqinfo *oinfo;
989 /* We mostly ignore errors in this function because there's not much
990 * we can do when we see them */
991 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
992 if (!sb_has_quota_loaded(sb, type))
994 /* Cancel periodic syncing before we grab dqonoff_mutex */
995 oinfo = sb_dqinfo(sb, type)->dqi_priv;
996 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
997 inode = igrab(sb->s_dquot.files[type]);
998 /* Turn off quotas. This will remove all dquot structures from
999 * memory and so they will be automatically synced to global
1001 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
1002 DQUOT_LIMITS_ENABLED);
1009 static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
1011 struct dentry *root;
1012 int status, sector_size;
1013 struct mount_options parsed_options;
1014 struct inode *inode = NULL;
1015 struct ocfs2_super *osb = NULL;
1016 struct buffer_head *bh = NULL;
1018 struct ocfs2_blockcheck_stats stats;
1020 trace_ocfs2_fill_super(sb, data, silent);
1022 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
1024 goto read_super_error;
1027 /* probe for superblock */
1028 status = ocfs2_sb_probe(sb, &bh, §or_size, &stats);
1030 mlog(ML_ERROR, "superblock probe failed!\n");
1031 goto read_super_error;
1034 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
1038 goto read_super_error;
1043 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1045 goto read_super_error;
1047 osb->s_mount_opt = parsed_options.mount_opt;
1048 osb->s_atime_quantum = parsed_options.atime_quantum;
1049 osb->preferred_slot = parsed_options.slot;
1050 osb->osb_commit_interval = parsed_options.commit_interval;
1052 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
1053 osb->osb_resv_level = parsed_options.resv_level;
1054 osb->osb_dir_resv_level = parsed_options.resv_level;
1055 if (parsed_options.dir_resv_level == -1)
1056 osb->osb_dir_resv_level = parsed_options.resv_level;
1058 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
1060 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1062 goto read_super_error;
1064 sb->s_magic = OCFS2_SUPER_MAGIC;
1066 sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) |
1067 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
1069 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1071 if (bdev_read_only(sb->s_bdev)) {
1072 if (!(sb->s_flags & MS_RDONLY)) {
1074 mlog(ML_ERROR, "Readonly device detected but readonly "
1075 "mount was not specified.\n");
1076 goto read_super_error;
1079 /* You should not be able to start a local heartbeat
1080 * on a readonly device. */
1081 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1083 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1085 goto read_super_error;
1088 status = ocfs2_check_journals_nolocks(osb);
1090 if (status == -EROFS)
1091 mlog(ML_ERROR, "Recovery required on readonly "
1092 "file system, but write access is "
1096 goto read_super_error;
1099 ocfs2_set_ro_flag(osb, 1);
1101 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1102 "Cluster services will not be used for this mount. "
1103 "Recovery will be skipped.\n", osb->dev_str);
1106 if (!ocfs2_is_hard_readonly(osb)) {
1107 if (sb->s_flags & MS_RDONLY)
1108 ocfs2_set_ro_flag(osb, 0);
1111 status = ocfs2_verify_heartbeat(osb);
1114 goto read_super_error;
1117 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1118 ocfs2_debugfs_root);
1119 if (!osb->osb_debug_root) {
1121 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1122 goto read_super_error;
1125 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1126 osb->osb_debug_root,
1128 &ocfs2_osb_debug_fops);
1129 if (!osb->osb_ctxt) {
1132 goto read_super_error;
1135 if (ocfs2_meta_ecc(osb)) {
1136 status = ocfs2_blockcheck_stats_debugfs_install(
1137 &osb->osb_ecc_stats,
1138 osb->osb_debug_root);
1141 "Unable to create blockcheck statistics "
1143 goto read_super_error;
1147 status = ocfs2_mount_volume(sb);
1149 goto read_super_error;
1151 if (osb->root_inode)
1152 inode = igrab(osb->root_inode);
1157 goto read_super_error;
1160 root = d_make_root(inode);
1164 goto read_super_error;
1169 ocfs2_complete_mount_recovery(osb);
1171 if (ocfs2_mount_local(osb))
1172 snprintf(nodestr, sizeof(nodestr), "local");
1174 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1176 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
1177 "with %s data mode.\n",
1178 osb->dev_str, nodestr, osb->slot_num,
1179 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1182 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1183 wake_up(&osb->osb_mount_event);
1185 /* Now we can initialize quotas because we can afford to wait
1186 * for cluster locks recovery now. That also means that truncation
1187 * log recovery can happen but that waits for proper quota setup */
1188 if (!(sb->s_flags & MS_RDONLY)) {
1189 status = ocfs2_enable_quotas(osb);
1191 /* We have to err-out specially here because
1192 * s_root is already set */
1194 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1195 wake_up(&osb->osb_mount_event);
1200 ocfs2_complete_quota_recovery(osb);
1202 /* Now we wake up again for processes waiting for quotas */
1203 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1204 wake_up(&osb->osb_mount_event);
1206 /* Start this when the mount is almost sure of being successful */
1207 ocfs2_orphan_scan_start(osb);
1209 /* Create filecheck sysfile /sys/fs/ocfs2/<devname>/filecheck */
1210 ocfs2_filecheck_create_sysfs(sb);
1218 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1219 wake_up(&osb->osb_mount_event);
1220 ocfs2_dismount_volume(sb, 1);
1228 static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
1230 const char *dev_name,
1233 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
1236 static struct file_system_type ocfs2_fs_type = {
1237 .owner = THIS_MODULE,
1239 .mount = ocfs2_mount,
1240 .kill_sb = kill_block_super,
1241 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
1244 MODULE_ALIAS_FS("ocfs2");
1246 static int ocfs2_check_set_options(struct super_block *sb,
1247 struct mount_options *options)
1249 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1250 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1251 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1252 mlog(ML_ERROR, "User quotas were requested, but this "
1253 "filesystem does not have the feature enabled.\n");
1256 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1257 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1258 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1259 mlog(ML_ERROR, "Group quotas were requested, but this "
1260 "filesystem does not have the feature enabled.\n");
1263 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1264 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1265 mlog(ML_ERROR, "ACL support requested but extended attributes "
1266 "feature is not enabled\n");
1269 /* No ACL setting specified? Use XATTR feature... */
1270 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1271 OCFS2_MOUNT_NO_POSIX_ACL))) {
1272 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1273 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1275 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1280 static int ocfs2_parse_options(struct super_block *sb,
1282 struct mount_options *mopt,
1285 int status, user_stack = 0;
1289 substring_t args[MAX_OPT_ARGS];
1291 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
1293 mopt->commit_interval = 0;
1294 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
1295 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1296 mopt->slot = OCFS2_INVALID_SLOT;
1297 mopt->localalloc_opt = -1;
1298 mopt->cluster_stack[0] = '\0';
1299 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
1300 mopt->dir_resv_level = -1;
1307 while ((p = strsep(&options, ",")) != NULL) {
1311 token = match_token(p, tokens, args);
1314 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
1317 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1320 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
1323 if (match_int(&args[0], &option)) {
1328 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
1330 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
1333 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
1336 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
1339 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1340 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1341 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
1344 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1345 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1346 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_ROFS;
1349 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1350 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1351 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_CONT;
1353 case Opt_data_ordered:
1354 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
1356 case Opt_data_writeback:
1357 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
1359 case Opt_user_xattr:
1360 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1362 case Opt_nouser_xattr:
1363 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1365 case Opt_atime_quantum:
1366 if (match_int(&args[0], &option)) {
1371 mopt->atime_quantum = option;
1374 if (match_int(&args[0], &option)) {
1379 mopt->slot = (s16)option;
1382 if (match_int(&args[0], &option)) {
1389 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
1390 mopt->commit_interval = HZ * option;
1392 case Opt_localalloc:
1393 if (match_int(&args[0], &option)) {
1398 mopt->localalloc_opt = option;
1400 case Opt_localflocks:
1402 * Changing this during remount could race
1403 * flock() requests, or "unbalance" existing
1404 * ones (e.g., a lock is taken in one mode but
1405 * dropped in the other). If users care enough
1406 * to flip locking modes during remount, we
1407 * could add a "local" flag to individual
1408 * flock structures for proper tracking of
1412 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1415 /* Check both that the option we were passed
1416 * is of the right length and that it is a proper
1417 * string of the right length.
1419 if (((args[0].to - args[0].from) !=
1420 OCFS2_STACK_LABEL_LEN) ||
1421 (strnlen(args[0].from,
1422 OCFS2_STACK_LABEL_LEN) !=
1423 OCFS2_STACK_LABEL_LEN)) {
1425 "Invalid cluster_stack option\n");
1429 memcpy(mopt->cluster_stack, args[0].from,
1430 OCFS2_STACK_LABEL_LEN);
1431 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
1433 * Open code the memcmp here as we don't have
1435 * ocfs2_userspace_stack().
1437 if (memcmp(mopt->cluster_stack,
1438 OCFS2_CLASSIC_CLUSTER_STACK,
1439 OCFS2_STACK_LABEL_LEN))
1443 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1446 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1449 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1451 case Opt_coherency_buffered:
1452 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1454 case Opt_coherency_full:
1455 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1458 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1459 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
1462 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1463 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1465 case Opt_resv_level:
1468 if (match_int(&args[0], &option)) {
1472 if (option >= OCFS2_MIN_RESV_LEVEL &&
1473 option < OCFS2_MAX_RESV_LEVEL)
1474 mopt->resv_level = option;
1476 case Opt_dir_resv_level:
1479 if (match_int(&args[0], &option)) {
1483 if (option >= OCFS2_MIN_RESV_LEVEL &&
1484 option < OCFS2_MAX_RESV_LEVEL)
1485 mopt->dir_resv_level = option;
1487 case Opt_journal_async_commit:
1488 mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
1492 "Unrecognized mount option \"%s\" "
1493 "or missing value\n", p);
1499 if (user_stack == 0) {
1500 /* Ensure only one heartbeat mode */
1501 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1502 OCFS2_MOUNT_HB_GLOBAL |
1503 OCFS2_MOUNT_HB_NONE);
1504 if (hweight32(tmp) != 1) {
1505 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1517 static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
1519 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
1520 unsigned long opts = osb->s_mount_opt;
1521 unsigned int local_alloc_megs;
1523 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1524 seq_printf(s, ",_netdev");
1525 if (opts & OCFS2_MOUNT_HB_LOCAL)
1526 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1528 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1530 seq_printf(s, ",%s", OCFS2_HB_NONE);
1532 if (opts & OCFS2_MOUNT_NOINTR)
1533 seq_printf(s, ",nointr");
1535 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1536 seq_printf(s, ",data=writeback");
1538 seq_printf(s, ",data=ordered");
1540 if (opts & OCFS2_MOUNT_BARRIER)
1541 seq_printf(s, ",barrier=1");
1543 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1544 seq_printf(s, ",errors=panic");
1545 else if (opts & OCFS2_MOUNT_ERRORS_CONT)
1546 seq_printf(s, ",errors=continue");
1548 seq_printf(s, ",errors=remount-ro");
1550 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1551 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1553 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
1555 if (osb->osb_commit_interval)
1556 seq_printf(s, ",commit=%u",
1557 (unsigned) (osb->osb_commit_interval / HZ));
1559 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
1560 if (local_alloc_megs != ocfs2_la_default_mb(osb))
1561 seq_printf(s, ",localalloc=%d", local_alloc_megs);
1563 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1564 seq_printf(s, ",localflocks,");
1566 if (osb->osb_cluster_stack[0])
1567 seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack,
1568 OCFS2_STACK_LABEL_LEN);
1569 if (opts & OCFS2_MOUNT_USRQUOTA)
1570 seq_printf(s, ",usrquota");
1571 if (opts & OCFS2_MOUNT_GRPQUOTA)
1572 seq_printf(s, ",grpquota");
1574 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1575 seq_printf(s, ",coherency=buffered");
1577 seq_printf(s, ",coherency=full");
1579 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1580 seq_printf(s, ",nouser_xattr");
1582 seq_printf(s, ",user_xattr");
1584 if (opts & OCFS2_MOUNT_INODE64)
1585 seq_printf(s, ",inode64");
1587 if (opts & OCFS2_MOUNT_POSIX_ACL)
1588 seq_printf(s, ",acl");
1590 seq_printf(s, ",noacl");
1592 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1593 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1595 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1596 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1598 if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
1599 seq_printf(s, ",journal_async_commit");
1604 static int __init ocfs2_init(void)
1608 status = init_ocfs2_uptodate_cache();
1612 status = ocfs2_initialize_mem_caches();
1616 ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
1622 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1623 if (!ocfs2_debugfs_root) {
1625 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
1629 ocfs2_set_locking_protocol();
1631 status = register_quota_format(&ocfs2_quota_format);
1634 status = register_filesystem(&ocfs2_fs_type);
1638 unregister_quota_format(&ocfs2_quota_format);
1640 destroy_workqueue(ocfs2_wq);
1641 debugfs_remove(ocfs2_debugfs_root);
1643 ocfs2_free_mem_caches();
1645 exit_ocfs2_uptodate_cache();
1651 static void __exit ocfs2_exit(void)
1654 flush_workqueue(ocfs2_wq);
1655 destroy_workqueue(ocfs2_wq);
1658 unregister_quota_format(&ocfs2_quota_format);
1660 debugfs_remove(ocfs2_debugfs_root);
1662 ocfs2_free_mem_caches();
1664 unregister_filesystem(&ocfs2_fs_type);
1666 exit_ocfs2_uptodate_cache();
1669 static void ocfs2_put_super(struct super_block *sb)
1671 trace_ocfs2_put_super(sb);
1673 ocfs2_sync_blockdev(sb);
1674 ocfs2_dismount_volume(sb, 0);
1675 ocfs2_filecheck_remove_sysfs(sb);
1678 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
1680 struct ocfs2_super *osb;
1681 u32 numbits, freebits;
1683 struct ocfs2_dinode *bm_lock;
1684 struct buffer_head *bh = NULL;
1685 struct inode *inode = NULL;
1687 trace_ocfs2_statfs(dentry->d_sb, buf);
1689 osb = OCFS2_SB(dentry->d_sb);
1691 inode = ocfs2_get_system_file_inode(osb,
1692 GLOBAL_BITMAP_SYSTEM_INODE,
1693 OCFS2_INVALID_SLOT);
1695 mlog(ML_ERROR, "failed to get bitmap inode\n");
1700 status = ocfs2_inode_lock(inode, &bh, 0);
1706 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1708 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1709 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1711 buf->f_type = OCFS2_SUPER_MAGIC;
1712 buf->f_bsize = dentry->d_sb->s_blocksize;
1713 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1714 buf->f_blocks = ((sector_t) numbits) *
1715 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1716 buf->f_bfree = ((sector_t) freebits) *
1717 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1718 buf->f_bavail = buf->f_bfree;
1719 buf->f_files = numbits;
1720 buf->f_ffree = freebits;
1721 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1723 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1724 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
1728 ocfs2_inode_unlock(inode, 0);
1739 static void ocfs2_inode_init_once(void *data)
1741 struct ocfs2_inode_info *oi = data;
1744 oi->ip_open_count = 0;
1745 spin_lock_init(&oi->ip_lock);
1746 ocfs2_extent_map_init(&oi->vfs_inode);
1747 INIT_LIST_HEAD(&oi->ip_io_markers);
1748 oi->ip_dir_start_lookup = 0;
1749 mutex_init(&oi->ip_unaligned_aio);
1750 init_rwsem(&oi->ip_alloc_sem);
1751 init_rwsem(&oi->ip_xattr_sem);
1752 mutex_init(&oi->ip_io_mutex);
1754 oi->ip_blkno = 0ULL;
1755 oi->ip_clusters = 0;
1757 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1759 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
1760 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
1761 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
1763 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
1764 &ocfs2_inode_caching_ops);
1766 inode_init_once(&oi->vfs_inode);
1769 static int ocfs2_initialize_mem_caches(void)
1771 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
1772 sizeof(struct ocfs2_inode_info),
1774 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1775 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
1776 ocfs2_inode_init_once);
1777 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1778 sizeof(struct ocfs2_dquot),
1780 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1783 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1784 sizeof(struct ocfs2_quota_chunk),
1786 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1788 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1789 !ocfs2_qf_chunk_cachep) {
1790 if (ocfs2_inode_cachep)
1791 kmem_cache_destroy(ocfs2_inode_cachep);
1792 if (ocfs2_dquot_cachep)
1793 kmem_cache_destroy(ocfs2_dquot_cachep);
1794 if (ocfs2_qf_chunk_cachep)
1795 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1802 static void ocfs2_free_mem_caches(void)
1805 * Make sure all delayed rcu free inodes are flushed before we
1809 if (ocfs2_inode_cachep)
1810 kmem_cache_destroy(ocfs2_inode_cachep);
1811 ocfs2_inode_cachep = NULL;
1813 if (ocfs2_dquot_cachep)
1814 kmem_cache_destroy(ocfs2_dquot_cachep);
1815 ocfs2_dquot_cachep = NULL;
1817 if (ocfs2_qf_chunk_cachep)
1818 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1819 ocfs2_qf_chunk_cachep = NULL;
1822 static int ocfs2_get_sector(struct super_block *sb,
1823 struct buffer_head **bh,
1827 if (!sb_set_blocksize(sb, sect_size)) {
1828 mlog(ML_ERROR, "unable to set blocksize\n");
1832 *bh = sb_getblk(sb, block);
1834 mlog_errno(-ENOMEM);
1838 if (!buffer_dirty(*bh))
1839 clear_buffer_uptodate(*bh);
1841 ll_rw_block(READ, 1, bh);
1842 wait_on_buffer(*bh);
1843 if (!buffer_uptodate(*bh)) {
1853 static int ocfs2_mount_volume(struct super_block *sb)
1856 int unlock_super = 0;
1857 struct ocfs2_super *osb = OCFS2_SB(sb);
1859 if (ocfs2_is_hard_readonly(osb))
1862 status = ocfs2_dlm_init(osb);
1868 status = ocfs2_super_lock(osb, 1);
1875 /* This will load up the node map and add ourselves to it. */
1876 status = ocfs2_find_slot(osb);
1882 /* load all node-local system inodes */
1883 status = ocfs2_init_local_system_inodes(osb);
1889 status = ocfs2_check_volume(osb);
1895 status = ocfs2_truncate_log_init(osb);
1901 ocfs2_super_unlock(osb, 1);
1906 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1908 int tmp, hangup_needed = 0;
1909 struct ocfs2_super *osb = NULL;
1912 trace_ocfs2_dismount_volume(sb);
1918 debugfs_remove(osb->osb_ctxt);
1920 /* Orphan scan should be stopped as early as possible */
1921 ocfs2_orphan_scan_stop(osb);
1923 ocfs2_disable_quotas(osb);
1925 /* All dquots should be freed by now */
1926 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1927 /* Wait for worker to be done with the work structure in osb */
1928 cancel_work_sync(&osb->dquot_drop_work);
1930 ocfs2_shutdown_local_alloc(osb);
1932 ocfs2_truncate_log_shutdown(osb);
1934 /* This will disable recovery and flush any recovery work. */
1935 ocfs2_recovery_exit(osb);
1937 ocfs2_journal_shutdown(osb);
1939 ocfs2_sync_blockdev(sb);
1941 ocfs2_purge_refcount_trees(osb);
1943 /* No cluster connection means we've failed during mount, so skip
1944 * all the steps which depended on that to complete. */
1946 tmp = ocfs2_super_lock(osb, 1);
1953 if (osb->slot_num != OCFS2_INVALID_SLOT)
1954 ocfs2_put_slot(osb);
1957 ocfs2_super_unlock(osb, 1);
1959 ocfs2_release_system_inodes(osb);
1962 * If we're dismounting due to mount error, mount.ocfs2 will clean
1963 * up heartbeat. If we're a local mount, there is no heartbeat.
1964 * If we failed before we got a uuid_str yet, we can't stop
1965 * heartbeat. Otherwise, do it.
1967 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1968 !ocfs2_is_hard_readonly(osb))
1972 ocfs2_dlm_shutdown(osb, hangup_needed);
1974 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
1975 debugfs_remove(osb->osb_debug_root);
1978 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
1980 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1982 if (ocfs2_mount_local(osb))
1983 snprintf(nodestr, sizeof(nodestr), "local");
1985 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1987 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1988 osb->dev_str, nodestr);
1990 ocfs2_delete_osb(osb);
1993 sb->s_fs_info = NULL;
1996 static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1997 unsigned uuid_bytes)
2002 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
2004 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
2005 if (osb->uuid_str == NULL)
2008 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
2009 /* print with null */
2010 ret = snprintf(ptr, 3, "%02X", uuid[i]);
2011 if (ret != 2) /* drop super cleans up */
2013 /* then only advance past the last char */
2020 /* Make sure entire volume is addressable by our journal. Requires
2021 osb_clusters_at_boot to be valid and for the journal to have been
2022 initialized by ocfs2_journal_init(). */
2023 static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2027 ocfs2_clusters_to_blocks(osb->sb,
2028 osb->osb_clusters_at_boot) - 1;
2030 /* 32-bit block number is always OK. */
2031 if (max_block <= (u32)~0ULL)
2034 /* Volume is "huge", so see if our journal is new enough to
2036 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2037 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2038 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2039 JBD2_FEATURE_INCOMPAT_64BIT))) {
2040 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2041 "Enable the 'block64' journal option with tunefs.ocfs2");
2050 static int ocfs2_initialize_super(struct super_block *sb,
2051 struct buffer_head *bh,
2053 struct ocfs2_blockcheck_stats *stats)
2056 int i, cbits, bbits;
2057 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
2058 struct inode *inode = NULL;
2059 struct ocfs2_journal *journal;
2060 struct ocfs2_super *osb;
2063 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
2070 sb->s_fs_info = osb;
2071 sb->s_op = &ocfs2_sops;
2072 sb->s_d_op = &ocfs2_dentry_ops;
2073 sb->s_export_op = &ocfs2_export_ops;
2074 sb->s_qcop = &dquot_quotactl_sysfile_ops;
2075 sb->dq_op = &ocfs2_quota_operations;
2076 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
2077 sb->s_xattr = ocfs2_xattr_handlers;
2078 sb->s_time_gran = 1;
2079 sb->s_flags |= MS_NOATIME;
2080 /* this is needed to support O_LARGEFILE */
2081 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2082 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2083 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
2084 memcpy(sb->s_uuid, di->id2.i_super.s_uuid,
2085 sizeof(di->id2.i_super.s_uuid));
2087 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2089 for (i = 0; i < 3; i++)
2090 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2091 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2094 /* Save off for ocfs2_rw_direct */
2095 osb->s_sectsize_bits = blksize_bits(sector_size);
2096 BUG_ON(!osb->s_sectsize_bits);
2098 spin_lock_init(&osb->dc_task_lock);
2099 init_waitqueue_head(&osb->dc_event);
2100 osb->dc_work_sequence = 0;
2101 osb->dc_wake_sequence = 0;
2102 INIT_LIST_HEAD(&osb->blocked_lock_list);
2103 osb->blocked_lock_count = 0;
2104 spin_lock_init(&osb->osb_lock);
2105 spin_lock_init(&osb->osb_xattr_lock);
2106 ocfs2_init_steal_slots(osb);
2108 mutex_init(&osb->system_file_mutex);
2110 atomic_set(&osb->alloc_stats.moves, 0);
2111 atomic_set(&osb->alloc_stats.local_data, 0);
2112 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2113 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2114 atomic_set(&osb->alloc_stats.bg_extends, 0);
2116 /* Copy the blockcheck stats from the superblock probe */
2117 osb->osb_ecc_stats = *stats;
2119 ocfs2_init_node_maps(osb);
2121 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2122 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2124 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2125 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2126 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2132 ocfs2_orphan_scan_init(osb);
2134 status = ocfs2_recovery_init(osb);
2136 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2141 init_waitqueue_head(&osb->checkpoint_event);
2143 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2145 osb->slot_num = OCFS2_INVALID_SLOT;
2147 osb->s_xattr_inline_size = le16_to_cpu(
2148 di->id2.i_super.s_xattr_inline_size);
2150 osb->local_alloc_state = OCFS2_LA_UNUSED;
2151 osb->local_alloc_bh = NULL;
2152 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
2154 init_waitqueue_head(&osb->osb_mount_event);
2156 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2162 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2163 if (!osb->vol_label) {
2164 mlog(ML_ERROR, "unable to alloc vol label\n");
2169 osb->slot_recovery_generations =
2170 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2172 if (!osb->slot_recovery_generations) {
2178 init_waitqueue_head(&osb->osb_wipe_event);
2179 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2180 sizeof(*osb->osb_orphan_wipes),
2182 if (!osb->osb_orphan_wipes) {
2188 osb->osb_rf_lock_tree = RB_ROOT;
2190 osb->s_feature_compat =
2191 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2192 osb->s_feature_ro_compat =
2193 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2194 osb->s_feature_incompat =
2195 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2197 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2198 mlog(ML_ERROR, "couldn't mount because of unsupported "
2199 "optional features (%x).\n", i);
2203 if (!(osb->sb->s_flags & MS_RDONLY) &&
2204 (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
2205 mlog(ML_ERROR, "couldn't mount RDWR because of "
2206 "unsupported optional features (%x).\n", i);
2211 if (ocfs2_clusterinfo_valid(osb)) {
2212 osb->osb_stackflags =
2213 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
2214 strlcpy(osb->osb_cluster_stack,
2215 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
2216 OCFS2_STACK_LABEL_LEN + 1);
2217 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2219 "couldn't mount because of an invalid "
2220 "cluster stack label (%s) \n",
2221 osb->osb_cluster_stack);
2225 strlcpy(osb->osb_cluster_name,
2226 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
2227 OCFS2_CLUSTER_NAME_LEN + 1);
2229 /* The empty string is identical with classic tools that
2230 * don't know about s_cluster_info. */
2231 osb->osb_cluster_stack[0] = '\0';
2234 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2237 * This should be done in ocfs2_journal_init(), but unknown
2238 * ordering issues will cause the filesystem to crash.
2239 * If anyone wants to figure out what part of the code
2240 * refers to osb->journal before ocfs2_journal_init() is run,
2243 /* initialize our journal structure */
2245 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
2247 mlog(ML_ERROR, "unable to alloc journal\n");
2251 osb->journal = journal;
2252 journal->j_osb = osb;
2254 atomic_set(&journal->j_num_trans, 0);
2255 init_rwsem(&journal->j_trans_barrier);
2256 init_waitqueue_head(&journal->j_checkpointed);
2257 spin_lock_init(&journal->j_lock);
2258 journal->j_trans_id = (unsigned long) 1;
2259 INIT_LIST_HEAD(&journal->j_la_cleanups);
2260 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
2261 journal->j_state = OCFS2_JOURNAL_FREE;
2263 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2264 init_llist_head(&osb->dquot_drop_list);
2266 /* get some pseudo constants for clustersize bits */
2267 osb->s_clustersize_bits =
2268 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2269 osb->s_clustersize = 1 << osb->s_clustersize_bits;
2271 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2272 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2273 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2274 osb->s_clustersize);
2279 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2280 le32_to_cpu(di->i_clusters));
2282 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2285 mlog(ML_ERROR, "Volume too large "
2286 "to mount safely on this system");
2291 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2292 sizeof(di->id2.i_super.s_uuid))) {
2293 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2298 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2299 OCFS2_MAX_VOL_LABEL_LEN);
2300 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2301 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2302 osb->first_cluster_group_blkno =
2303 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2304 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
2305 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2306 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2307 (unsigned long long)osb->root_blkno,
2308 (unsigned long long)osb->system_dir_blkno,
2309 osb->s_clustersize_bits);
2311 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2312 if (!osb->osb_dlm_debug) {
2318 atomic_set(&osb->vol_state, VOLUME_INIT);
2320 /* load root, system_dir, and all global system inodes */
2321 status = ocfs2_init_global_system_inodes(osb);
2330 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2331 OCFS2_INVALID_SLOT);
2338 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
2339 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
2342 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2343 osb->s_feature_incompat) * 8;
2345 status = ocfs2_init_slot_info(osb);
2350 cleancache_init_shared_fs(sb);
2357 * will return: -EAGAIN if it is ok to keep searching for superblocks
2358 * -EINVAL if there is a bad superblock
2361 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2362 struct buffer_head *bh,
2364 struct ocfs2_blockcheck_stats *stats)
2366 int status = -EAGAIN;
2368 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2369 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
2370 /* We have to do a raw check of the feature here */
2371 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2372 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2373 status = ocfs2_block_check_validate(bh->b_data,
2381 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2382 mlog(ML_ERROR, "found superblock with incorrect block "
2383 "size: found %u, should be %u\n",
2384 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2386 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2387 OCFS2_MAJOR_REV_LEVEL ||
2388 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2389 OCFS2_MINOR_REV_LEVEL) {
2390 mlog(ML_ERROR, "found superblock with bad version: "
2391 "found %u.%u, should be %u.%u\n",
2392 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2393 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2394 OCFS2_MAJOR_REV_LEVEL,
2395 OCFS2_MINOR_REV_LEVEL);
2396 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2397 mlog(ML_ERROR, "bad block number on superblock: "
2398 "found %llu, should be %llu\n",
2399 (unsigned long long)le64_to_cpu(di->i_blkno),
2400 (unsigned long long)bh->b_blocknr);
2401 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2402 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2403 mlog(ML_ERROR, "bad cluster size found: %u\n",
2404 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2405 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2406 mlog(ML_ERROR, "bad root_blkno: 0\n");
2407 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2408 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2409 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2411 "Superblock slots found greater than file system "
2412 "maximum: found %u, max %u\n",
2413 le16_to_cpu(di->id2.i_super.s_max_slots),
2422 if (status && status != -EAGAIN)
2427 static int ocfs2_check_volume(struct ocfs2_super *osb)
2432 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2436 /* Init our journal object. */
2437 status = ocfs2_journal_init(osb->journal, &dirty);
2439 mlog(ML_ERROR, "Could not initialize journal!\n");
2443 /* Now that journal has been initialized, check to make sure
2444 entire volume is addressable. */
2445 status = ocfs2_journal_addressable(osb);
2449 /* If the journal was unmounted cleanly then we don't want to
2450 * recover anything. Otherwise, journal_load will do that
2451 * dirty work for us :) */
2453 status = ocfs2_journal_wipe(osb->journal, 0);
2459 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2460 "unmounted cleanly, recovering it.\n", osb->dev_str);
2463 local = ocfs2_mount_local(osb);
2465 /* will play back anything left in the journal. */
2466 status = ocfs2_journal_load(osb->journal, local, dirty);
2468 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2472 if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
2473 jbd2_journal_set_features(osb->journal->j_journal,
2474 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2475 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2477 jbd2_journal_clear_features(osb->journal->j_journal,
2478 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2479 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2482 /* recover my local alloc if we didn't unmount cleanly. */
2483 status = ocfs2_begin_local_alloc_recovery(osb,
2490 /* we complete the recovery process after we've marked
2491 * ourselves as mounted. */
2494 status = ocfs2_load_local_alloc(osb);
2501 /* Recovery will be completed after we've mounted the
2502 * rest of the volume. */
2504 osb->local_alloc_copy = local_alloc;
2508 /* go through each journal, trylock it and if you get the
2509 * lock, and it's marked as dirty, set the bit in the recover
2510 * map and launch a recovery thread for it. */
2511 status = ocfs2_mark_dead_nodes(osb);
2517 status = ocfs2_compute_replay_slots(osb);
2530 * The routine gets called from dismount or close whenever a dismount on
2531 * volume is requested and the osb open count becomes 1.
2532 * It will remove the osb from the global list and also free up all the
2533 * initialized resources and fileobject.
2535 static void ocfs2_delete_osb(struct ocfs2_super *osb)
2537 /* This function assumes that the caller has the main osb resource */
2539 ocfs2_free_slot_info(osb);
2541 kfree(osb->osb_orphan_wipes);
2542 kfree(osb->slot_recovery_generations);
2544 * This belongs in journal shutdown, but because we have to
2545 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2548 kfree(osb->journal);
2549 kfree(osb->local_alloc_copy);
2550 kfree(osb->uuid_str);
2551 kfree(osb->vol_label);
2552 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2553 memset(osb, 0, sizeof(struct ocfs2_super));
2556 /* Depending on the mount option passed, perform one of the following:
2557 * Put OCFS2 into a readonly state (default)
2558 * Return EIO so that only the process errs
2559 * Fix the error as if fsck.ocfs2 -y
2562 static int ocfs2_handle_error(struct super_block *sb)
2564 struct ocfs2_super *osb = OCFS2_SB(sb);
2567 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2568 pr_crit("On-disk corruption discovered. "
2569 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
2571 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) {
2572 panic("OCFS2: (device %s): panic forced after error\n",
2574 } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) {
2575 pr_crit("OCFS2: Returning error to the calling process.\n");
2577 } else { /* default option */
2579 if (sb->s_flags & MS_RDONLY &&
2580 (ocfs2_is_soft_readonly(osb) ||
2581 ocfs2_is_hard_readonly(osb)))
2584 pr_crit("OCFS2: File system is now read-only.\n");
2585 sb->s_flags |= MS_RDONLY;
2586 ocfs2_set_ro_flag(osb, 0);
2592 int __ocfs2_error(struct super_block *sb, const char *function,
2593 const char *fmt, ...)
2595 struct va_format vaf;
2598 va_start(args, fmt);
2602 /* Not using mlog here because we want to show the actual
2603 * function the error came from. */
2604 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV",
2605 sb->s_id, function, &vaf);
2609 return ocfs2_handle_error(sb);
2612 /* Handle critical errors. This is intentionally more drastic than
2613 * ocfs2_handle_error, so we only use for things like journal errors,
2615 void __ocfs2_abort(struct super_block *sb, const char *function,
2616 const char *fmt, ...)
2618 struct va_format vaf;
2621 va_start(args, fmt);
2626 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV",
2627 sb->s_id, function, &vaf);
2631 /* We don't have the cluster support yet to go straight to
2632 * hard readonly in here. Until then, we want to keep
2633 * ocfs2_abort() so that we can at least mark critical
2636 * TODO: This should abort the journal and alert other nodes
2637 * that our slot needs recovery. */
2639 /* Force a panic(). This stinks, but it's better than letting
2640 * things continue without having a proper hard readonly
2642 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2643 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
2644 ocfs2_handle_error(sb);
2648 * Void signal blockers, because in-kernel sigprocmask() only fails
2649 * when SIG_* is wrong.
2651 void ocfs2_block_signals(sigset_t *oldset)
2656 sigfillset(&blocked);
2657 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2661 void ocfs2_unblock_signals(sigset_t *oldset)
2663 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2667 module_init(ocfs2_init);
2668 module_exit(ocfs2_exit);