1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * load/unload driver, mount/dismount volumes
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
26 #include <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/slab.h>
30 #include <linux/highmem.h>
31 #include <linux/init.h>
32 #include <linux/random.h>
33 #include <linux/statfs.h>
34 #include <linux/moduleparam.h>
35 #include <linux/blkdev.h>
36 #include <linux/socket.h>
37 #include <linux/inet.h>
38 #include <linux/parser.h>
39 #include <linux/crc32.h>
40 #include <linux/debugfs.h>
41 #include <linux/mount.h>
42 #include <linux/seq_file.h>
43 #include <linux/quotaops.h>
44 #include <linux/cleancache.h>
46 #define CREATE_TRACE_POINTS
47 #include "ocfs2_trace.h"
49 #include <cluster/masklog.h>
53 /* this should be the only file to include a version 1 header */
54 #include "ocfs1_fs_compat.h"
58 #include "blockcheck.h"
61 #include "extent_map.h"
62 #include "heartbeat.h"
65 #include "localalloc.h"
73 #include "refcounttree.h"
76 #include "buffer_head_io.h"
78 static struct kmem_cache *ocfs2_inode_cachep;
79 struct kmem_cache *ocfs2_dquot_cachep;
80 struct kmem_cache *ocfs2_qf_chunk_cachep;
82 /* OCFS2 needs to schedule several different types of work which
83 * require cluster locking, disk I/O, recovery waits, etc. Since these
84 * types of work tend to be heavy we avoid using the kernel events
85 * workqueue and schedule on our own. */
86 struct workqueue_struct *ocfs2_wq = NULL;
88 static struct dentry *ocfs2_debugfs_root;
90 MODULE_AUTHOR("Oracle");
91 MODULE_LICENSE("GPL");
92 MODULE_DESCRIPTION("OCFS2 cluster file system");
96 unsigned long commit_interval;
97 unsigned long mount_opt;
98 unsigned int atime_quantum;
101 unsigned int resv_level;
103 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
106 static int ocfs2_parse_options(struct super_block *sb, char *options,
107 struct mount_options *mopt,
109 static int ocfs2_check_set_options(struct super_block *sb,
110 struct mount_options *options);
111 static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
112 static void ocfs2_put_super(struct super_block *sb);
113 static int ocfs2_mount_volume(struct super_block *sb);
114 static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
115 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
116 static int ocfs2_initialize_mem_caches(void);
117 static void ocfs2_free_mem_caches(void);
118 static void ocfs2_delete_osb(struct ocfs2_super *osb);
120 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
122 static int ocfs2_sync_fs(struct super_block *sb, int wait);
124 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
125 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
126 static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
127 static int ocfs2_check_volume(struct ocfs2_super *osb);
128 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
129 struct buffer_head *bh,
131 struct ocfs2_blockcheck_stats *stats);
132 static int ocfs2_initialize_super(struct super_block *sb,
133 struct buffer_head *bh,
135 struct ocfs2_blockcheck_stats *stats);
136 static int ocfs2_get_sector(struct super_block *sb,
137 struct buffer_head **bh,
140 static struct inode *ocfs2_alloc_inode(struct super_block *sb);
141 static void ocfs2_destroy_inode(struct inode *inode);
142 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
143 static int ocfs2_enable_quotas(struct ocfs2_super *osb);
144 static void ocfs2_disable_quotas(struct ocfs2_super *osb);
146 static struct dquot **ocfs2_get_dquots(struct inode *inode)
148 return OCFS2_I(inode)->i_dquot;
151 static const struct super_operations ocfs2_sops = {
152 .statfs = ocfs2_statfs,
153 .alloc_inode = ocfs2_alloc_inode,
154 .destroy_inode = ocfs2_destroy_inode,
155 .drop_inode = ocfs2_drop_inode,
156 .evict_inode = ocfs2_evict_inode,
157 .sync_fs = ocfs2_sync_fs,
158 .put_super = ocfs2_put_super,
159 .remount_fs = ocfs2_remount,
160 .show_options = ocfs2_show_options,
161 .quota_read = ocfs2_quota_read,
162 .quota_write = ocfs2_quota_write,
163 .get_dquots = ocfs2_get_dquots,
190 Opt_coherency_buffered,
194 Opt_journal_async_commit,
199 static const match_table_t tokens = {
200 {Opt_barrier, "barrier=%u"},
201 {Opt_err_panic, "errors=panic"},
202 {Opt_err_ro, "errors=remount-ro"},
204 {Opt_nointr, "nointr"},
205 {Opt_hb_none, OCFS2_HB_NONE},
206 {Opt_hb_local, OCFS2_HB_LOCAL},
207 {Opt_hb_global, OCFS2_HB_GLOBAL},
208 {Opt_data_ordered, "data=ordered"},
209 {Opt_data_writeback, "data=writeback"},
210 {Opt_atime_quantum, "atime_quantum=%u"},
211 {Opt_slot, "preferred_slot=%u"},
212 {Opt_commit, "commit=%u"},
213 {Opt_localalloc, "localalloc=%d"},
214 {Opt_localflocks, "localflocks"},
215 {Opt_stack, "cluster_stack=%s"},
216 {Opt_user_xattr, "user_xattr"},
217 {Opt_nouser_xattr, "nouser_xattr"},
218 {Opt_inode64, "inode64"},
220 {Opt_noacl, "noacl"},
221 {Opt_usrquota, "usrquota"},
222 {Opt_grpquota, "grpquota"},
223 {Opt_coherency_buffered, "coherency=buffered"},
224 {Opt_coherency_full, "coherency=full"},
225 {Opt_resv_level, "resv_level=%u"},
226 {Opt_dir_resv_level, "dir_resv_level=%u"},
227 {Opt_journal_async_commit, "journal_async_commit"},
228 {Opt_err_cont, "errors=continue"},
232 #ifdef CONFIG_DEBUG_FS
233 static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
235 struct ocfs2_cluster_connection *cconn = osb->cconn;
236 struct ocfs2_recovery_map *rm = osb->recovery_map;
237 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
240 out += snprintf(buf + out, len - out,
241 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
242 "Device", osb->dev_str, osb->uuid_str,
243 osb->fs_generation, osb->vol_label);
245 out += snprintf(buf + out, len - out,
246 "%10s => State: %d Flags: 0x%lX\n", "Volume",
247 atomic_read(&osb->vol_state), osb->osb_flags);
249 out += snprintf(buf + out, len - out,
250 "%10s => Block: %lu Cluster: %d\n", "Sizes",
251 osb->sb->s_blocksize, osb->s_clustersize);
253 out += snprintf(buf + out, len - out,
254 "%10s => Compat: 0x%X Incompat: 0x%X "
256 "Features", osb->s_feature_compat,
257 osb->s_feature_incompat, osb->s_feature_ro_compat);
259 out += snprintf(buf + out, len - out,
260 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
261 osb->s_mount_opt, osb->s_atime_quantum);
264 out += snprintf(buf + out, len - out,
265 "%10s => Stack: %s Name: %*s "
266 "Version: %d.%d\n", "Cluster",
267 (*osb->osb_cluster_stack == '\0' ?
268 "o2cb" : osb->osb_cluster_stack),
269 cconn->cc_namelen, cconn->cc_name,
270 cconn->cc_version.pv_major,
271 cconn->cc_version.pv_minor);
274 spin_lock(&osb->dc_task_lock);
275 out += snprintf(buf + out, len - out,
276 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
277 "WorkSeq: %lu\n", "DownCnvt",
278 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
279 osb->blocked_lock_count, osb->dc_wake_sequence,
280 osb->dc_work_sequence);
281 spin_unlock(&osb->dc_task_lock);
283 spin_lock(&osb->osb_lock);
284 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
286 (osb->recovery_thread_task ?
287 task_pid_nr(osb->recovery_thread_task) : -1));
288 if (rm->rm_used == 0)
289 out += snprintf(buf + out, len - out, " None\n");
291 for (i = 0; i < rm->rm_used; i++)
292 out += snprintf(buf + out, len - out, " %d",
294 out += snprintf(buf + out, len - out, "\n");
296 spin_unlock(&osb->osb_lock);
298 out += snprintf(buf + out, len - out,
299 "%10s => Pid: %d Interval: %lu\n", "Commit",
300 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
301 osb->osb_commit_interval);
303 out += snprintf(buf + out, len - out,
304 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
305 "Journal", osb->journal->j_state,
306 osb->journal->j_trans_id,
307 atomic_read(&osb->journal->j_num_trans));
309 out += snprintf(buf + out, len - out,
310 "%10s => GlobalAllocs: %d LocalAllocs: %d "
311 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
313 atomic_read(&osb->alloc_stats.bitmap_data),
314 atomic_read(&osb->alloc_stats.local_data),
315 atomic_read(&osb->alloc_stats.bg_allocs),
316 atomic_read(&osb->alloc_stats.moves),
317 atomic_read(&osb->alloc_stats.bg_extends));
319 out += snprintf(buf + out, len - out,
320 "%10s => State: %u Descriptor: %llu Size: %u bits "
321 "Default: %u bits\n",
322 "LocalAlloc", osb->local_alloc_state,
323 (unsigned long long)osb->la_last_gd,
324 osb->local_alloc_bits, osb->local_alloc_default_bits);
326 spin_lock(&osb->osb_lock);
327 out += snprintf(buf + out, len - out,
328 "%10s => InodeSlot: %d StolenInodes: %d, "
329 "MetaSlot: %d StolenMeta: %d\n", "Steal",
330 osb->s_inode_steal_slot,
331 atomic_read(&osb->s_num_inodes_stolen),
332 osb->s_meta_steal_slot,
333 atomic_read(&osb->s_num_meta_stolen));
334 spin_unlock(&osb->osb_lock);
336 out += snprintf(buf + out, len - out, "OrphanScan => ");
337 out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
338 os->os_count, os->os_seqno);
339 out += snprintf(buf + out, len - out, " Last Scan: ");
340 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
341 out += snprintf(buf + out, len - out, "Disabled\n");
343 out += snprintf(buf + out, len - out, "%lu seconds ago\n",
344 (get_seconds() - os->os_scantime.tv_sec));
346 out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
347 "Slots", "Num", "RecoGen");
348 for (i = 0; i < osb->max_slots; ++i) {
349 out += snprintf(buf + out, len - out,
350 "%10s %c %3d %10d\n",
352 (i == osb->slot_num ? '*' : ' '),
353 i, osb->slot_recovery_generations[i]);
359 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
361 struct ocfs2_super *osb = inode->i_private;
364 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
368 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
370 file->private_data = buf;
377 static int ocfs2_debug_release(struct inode *inode, struct file *file)
379 kfree(file->private_data);
383 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
384 size_t nbytes, loff_t *ppos)
386 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
387 i_size_read(file->f_mapping->host));
390 static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
394 static int ocfs2_debug_release(struct inode *inode, struct file *file)
398 static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
399 size_t nbytes, loff_t *ppos)
403 #endif /* CONFIG_DEBUG_FS */
405 static const struct file_operations ocfs2_osb_debug_fops = {
406 .open = ocfs2_osb_debug_open,
407 .release = ocfs2_debug_release,
408 .read = ocfs2_debug_read,
409 .llseek = generic_file_llseek,
412 static int ocfs2_sync_fs(struct super_block *sb, int wait)
416 struct ocfs2_super *osb = OCFS2_SB(sb);
418 if (ocfs2_is_hard_readonly(osb))
422 status = ocfs2_flush_truncate_log(osb);
426 ocfs2_schedule_truncate_log_flush(osb, 0);
429 if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal,
432 jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal,
438 static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
440 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
441 && (ino == USER_QUOTA_SYSTEM_INODE
442 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
444 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
445 && (ino == GROUP_QUOTA_SYSTEM_INODE
446 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
451 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
453 struct inode *new = NULL;
457 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
459 status = PTR_ERR(new);
463 osb->root_inode = new;
465 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
467 status = PTR_ERR(new);
471 osb->sys_root_inode = new;
473 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
474 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
475 if (!ocfs2_need_system_inode(osb, i))
477 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
479 ocfs2_release_system_inodes(osb);
482 /* FIXME: Should ERROR_RO_FS */
483 mlog(ML_ERROR, "Unable to load system inode %d, "
484 "possibly corrupt fs?", i);
487 // the array now has one ref, so drop this one
497 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
499 struct inode *new = NULL;
503 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
504 i < NUM_SYSTEM_INODES;
506 if (!ocfs2_need_system_inode(osb, i))
508 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
510 ocfs2_release_system_inodes(osb);
512 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
513 status, i, osb->slot_num);
516 /* the array now has one ref, so drop this one */
526 static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
531 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
532 inode = osb->global_system_inodes[i];
535 osb->global_system_inodes[i] = NULL;
539 inode = osb->sys_root_inode;
542 osb->sys_root_inode = NULL;
545 inode = osb->root_inode;
548 osb->root_inode = NULL;
551 if (!osb->local_system_inodes)
554 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
555 if (osb->local_system_inodes[i]) {
556 iput(osb->local_system_inodes[i]);
557 osb->local_system_inodes[i] = NULL;
561 kfree(osb->local_system_inodes);
562 osb->local_system_inodes = NULL;
565 /* We're allocating fs objects, use GFP_NOFS */
566 static struct inode *ocfs2_alloc_inode(struct super_block *sb)
568 struct ocfs2_inode_info *oi;
570 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
575 oi->i_datasync_tid = 0;
576 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
578 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
579 return &oi->vfs_inode;
582 static void ocfs2_i_callback(struct rcu_head *head)
584 struct inode *inode = container_of(head, struct inode, i_rcu);
585 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
588 static void ocfs2_destroy_inode(struct inode *inode)
590 call_rcu(&inode->i_rcu, ocfs2_i_callback);
593 static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
596 unsigned int bytes = 1 << cbits;
597 unsigned int trim = bytes;
598 unsigned int bitshift = 32;
601 * i_size and all block offsets in ocfs2 are always 64 bits
602 * wide. i_clusters is 32 bits, in cluster-sized units. So on
603 * 64 bit platforms, cluster size will be the limiting factor.
606 #if BITS_PER_LONG == 32
607 # if defined(CONFIG_LBDAF)
608 BUILD_BUG_ON(sizeof(sector_t) != 8);
610 * We might be limited by page cache size.
612 if (bytes > PAGE_CACHE_SIZE) {
613 bytes = PAGE_CACHE_SIZE;
616 * Shift by 31 here so that we don't get larger than
623 * We are limited by the size of sector_t. Use block size, as
624 * that's what we expose to the VFS.
633 * Trim by a whole cluster when we can actually approach the
634 * on-disk limits. Otherwise we can overflow i_clusters when
635 * an extent start is at the max offset.
637 return (((unsigned long long)bytes) << bitshift) - trim;
640 static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
642 int incompat_features;
644 struct mount_options parsed_options;
645 struct ocfs2_super *osb = OCFS2_SB(sb);
650 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
651 !ocfs2_check_set_options(sb, &parsed_options)) {
656 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
658 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
660 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
664 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
665 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
667 mlog(ML_ERROR, "Cannot change data mode on remount\n");
671 /* Probably don't want this on remount; it might
672 * mess with other nodes */
673 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
674 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
676 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
680 /* We're going to/from readonly mode. */
681 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
682 /* Disable quota accounting before remounting RO */
683 if (*flags & MS_RDONLY) {
684 ret = ocfs2_susp_quotas(osb, 0);
688 /* Lock here so the check of HARD_RO and the potential
689 * setting of SOFT_RO is atomic. */
690 spin_lock(&osb->osb_lock);
691 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
692 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
697 if (*flags & MS_RDONLY) {
698 sb->s_flags |= MS_RDONLY;
699 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
701 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
702 mlog(ML_ERROR, "Cannot remount RDWR "
703 "filesystem due to previous errors.\n");
707 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
708 if (incompat_features) {
709 mlog(ML_ERROR, "Cannot remount RDWR because "
710 "of unsupported optional features "
711 "(%x).\n", incompat_features);
715 sb->s_flags &= ~MS_RDONLY;
716 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
718 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
720 spin_unlock(&osb->osb_lock);
721 /* Enable quota accounting after remounting RW */
722 if (!ret && !(*flags & MS_RDONLY)) {
723 if (sb_any_quota_suspended(sb))
724 ret = ocfs2_susp_quotas(osb, 1);
726 ret = ocfs2_enable_quotas(osb);
728 /* Return back changes... */
729 spin_lock(&osb->osb_lock);
730 sb->s_flags |= MS_RDONLY;
731 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
732 spin_unlock(&osb->osb_lock);
739 /* Only save off the new mount options in case of a successful
741 osb->s_mount_opt = parsed_options.mount_opt;
742 osb->s_atime_quantum = parsed_options.atime_quantum;
743 osb->preferred_slot = parsed_options.slot;
744 if (parsed_options.commit_interval)
745 osb->osb_commit_interval = parsed_options.commit_interval;
747 if (!ocfs2_is_hard_readonly(osb))
748 ocfs2_set_journal_params(osb);
750 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
751 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
758 static int ocfs2_sb_probe(struct super_block *sb,
759 struct buffer_head **bh,
761 struct ocfs2_blockcheck_stats *stats)
764 struct ocfs1_vol_disk_hdr *hdr;
765 struct ocfs2_dinode *di;
771 *sector_size = bdev_logical_block_size(sb->s_bdev);
772 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
773 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
774 *sector_size, OCFS2_MAX_BLOCKSIZE);
779 /* Can this really happen? */
780 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
781 *sector_size = OCFS2_MIN_BLOCKSIZE;
783 /* check block zero for old format */
784 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
789 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
790 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
791 mlog(ML_ERROR, "incompatible version: %u.%u\n",
792 hdr->major_version, hdr->minor_version);
795 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
796 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
797 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
804 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
805 "upgraded before mounting with ocfs v2\n");
810 * Now check at magic offset for 512, 1024, 2048, 4096
811 * blocksizes. 4096 is the maximum blocksize because it is
812 * the minimum clustersize.
815 for (blksize = *sector_size;
816 blksize <= OCFS2_MAX_BLOCKSIZE;
818 tmpstat = ocfs2_get_sector(sb, bh,
819 OCFS2_SUPER_BLOCK_BLKNO,
826 di = (struct ocfs2_dinode *) (*bh)->b_data;
827 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
828 spin_lock_init(&stats->b_lock);
829 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
834 if (tmpstat != -EAGAIN) {
844 static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
846 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
848 if (osb->s_mount_opt & hb_enabled) {
849 if (ocfs2_mount_local(osb)) {
850 mlog(ML_ERROR, "Cannot heartbeat on a locally "
851 "mounted device.\n");
854 if (ocfs2_userspace_stack(osb)) {
855 mlog(ML_ERROR, "Userspace stack expected, but "
856 "o2cb heartbeat arguments passed to mount\n");
859 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
860 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
861 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
862 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
863 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
868 if (!(osb->s_mount_opt & hb_enabled)) {
869 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
870 !ocfs2_userspace_stack(osb)) {
871 mlog(ML_ERROR, "Heartbeat has to be started to mount "
872 "a read-write clustered device.\n");
881 * If we're using a userspace stack, mount should have passed
882 * a name that matches the disk. If not, mount should not
883 * have passed a stack.
885 static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
886 struct mount_options *mopt)
888 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
890 "cluster stack passed to mount, but this filesystem "
891 "does not support it\n");
895 if (ocfs2_userspace_stack(osb) &&
896 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
897 OCFS2_STACK_LABEL_LEN)) {
899 "cluster stack passed to mount (\"%s\") does not "
900 "match the filesystem (\"%s\")\n",
902 osb->osb_cluster_stack);
909 static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
912 struct super_block *sb = osb->sb;
913 unsigned int feature[OCFS2_MAXQUOTAS] = {
914 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
915 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
918 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
919 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
922 status = dquot_resume(sb, type);
924 struct ocfs2_mem_dqinfo *oinfo;
926 /* Cancel periodic syncing before suspending */
927 oinfo = sb_dqinfo(sb, type)->dqi_priv;
928 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
929 status = dquot_suspend(sb, type);
935 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
936 "remount (error = %d).\n", status);
940 static int ocfs2_enable_quotas(struct ocfs2_super *osb)
942 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
943 struct super_block *sb = osb->sb;
944 unsigned int feature[OCFS2_MAXQUOTAS] = {
945 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
946 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
947 unsigned int ino[OCFS2_MAXQUOTAS] = {
948 LOCAL_USER_QUOTA_SYSTEM_INODE,
949 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
953 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
954 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
955 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
957 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
963 status = dquot_enable(inode[type], type, QFMT_OCFS2,
964 DQUOT_USAGE_ENABLED);
969 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
973 ocfs2_disable_quotas(osb);
974 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
980 static void ocfs2_disable_quotas(struct ocfs2_super *osb)
984 struct super_block *sb = osb->sb;
985 struct ocfs2_mem_dqinfo *oinfo;
987 /* We mostly ignore errors in this function because there's not much
988 * we can do when we see them */
989 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
990 if (!sb_has_quota_loaded(sb, type))
992 /* Cancel periodic syncing before we grab dqonoff_mutex */
993 oinfo = sb_dqinfo(sb, type)->dqi_priv;
994 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
995 inode = igrab(sb->s_dquot.files[type]);
996 /* Turn off quotas. This will remove all dquot structures from
997 * memory and so they will be automatically synced to global
999 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
1000 DQUOT_LIMITS_ENABLED);
1007 static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
1009 struct dentry *root;
1010 int status, sector_size;
1011 struct mount_options parsed_options;
1012 struct inode *inode = NULL;
1013 struct ocfs2_super *osb = NULL;
1014 struct buffer_head *bh = NULL;
1016 struct ocfs2_blockcheck_stats stats;
1018 trace_ocfs2_fill_super(sb, data, silent);
1020 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
1022 goto read_super_error;
1025 /* probe for superblock */
1026 status = ocfs2_sb_probe(sb, &bh, §or_size, &stats);
1028 mlog(ML_ERROR, "superblock probe failed!\n");
1029 goto read_super_error;
1032 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
1036 goto read_super_error;
1041 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1043 goto read_super_error;
1045 osb->s_mount_opt = parsed_options.mount_opt;
1046 osb->s_atime_quantum = parsed_options.atime_quantum;
1047 osb->preferred_slot = parsed_options.slot;
1048 osb->osb_commit_interval = parsed_options.commit_interval;
1050 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
1051 osb->osb_resv_level = parsed_options.resv_level;
1052 osb->osb_dir_resv_level = parsed_options.resv_level;
1053 if (parsed_options.dir_resv_level == -1)
1054 osb->osb_dir_resv_level = parsed_options.resv_level;
1056 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
1058 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1060 goto read_super_error;
1062 sb->s_magic = OCFS2_SUPER_MAGIC;
1064 sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) |
1065 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
1067 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1069 if (bdev_read_only(sb->s_bdev)) {
1070 if (!(sb->s_flags & MS_RDONLY)) {
1072 mlog(ML_ERROR, "Readonly device detected but readonly "
1073 "mount was not specified.\n");
1074 goto read_super_error;
1077 /* You should not be able to start a local heartbeat
1078 * on a readonly device. */
1079 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1081 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1083 goto read_super_error;
1086 status = ocfs2_check_journals_nolocks(osb);
1088 if (status == -EROFS)
1089 mlog(ML_ERROR, "Recovery required on readonly "
1090 "file system, but write access is "
1094 goto read_super_error;
1097 ocfs2_set_ro_flag(osb, 1);
1099 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1100 "Cluster services will not be used for this mount. "
1101 "Recovery will be skipped.\n", osb->dev_str);
1104 if (!ocfs2_is_hard_readonly(osb)) {
1105 if (sb->s_flags & MS_RDONLY)
1106 ocfs2_set_ro_flag(osb, 0);
1109 status = ocfs2_verify_heartbeat(osb);
1112 goto read_super_error;
1115 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1116 ocfs2_debugfs_root);
1117 if (!osb->osb_debug_root) {
1119 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1120 goto read_super_error;
1123 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1124 osb->osb_debug_root,
1126 &ocfs2_osb_debug_fops);
1127 if (!osb->osb_ctxt) {
1130 goto read_super_error;
1133 if (ocfs2_meta_ecc(osb)) {
1134 status = ocfs2_blockcheck_stats_debugfs_install(
1135 &osb->osb_ecc_stats,
1136 osb->osb_debug_root);
1139 "Unable to create blockcheck statistics "
1141 goto read_super_error;
1145 status = ocfs2_mount_volume(sb);
1147 goto read_super_error;
1149 if (osb->root_inode)
1150 inode = igrab(osb->root_inode);
1155 goto read_super_error;
1158 root = d_make_root(inode);
1162 goto read_super_error;
1167 ocfs2_complete_mount_recovery(osb);
1169 if (ocfs2_mount_local(osb))
1170 snprintf(nodestr, sizeof(nodestr), "local");
1172 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1174 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
1175 "with %s data mode.\n",
1176 osb->dev_str, nodestr, osb->slot_num,
1177 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1180 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1181 wake_up(&osb->osb_mount_event);
1183 /* Now we can initialize quotas because we can afford to wait
1184 * for cluster locks recovery now. That also means that truncation
1185 * log recovery can happen but that waits for proper quota setup */
1186 if (!(sb->s_flags & MS_RDONLY)) {
1187 status = ocfs2_enable_quotas(osb);
1189 /* We have to err-out specially here because
1190 * s_root is already set */
1192 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1193 wake_up(&osb->osb_mount_event);
1198 ocfs2_complete_quota_recovery(osb);
1200 /* Now we wake up again for processes waiting for quotas */
1201 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1202 wake_up(&osb->osb_mount_event);
1204 /* Start this when the mount is almost sure of being successful */
1205 ocfs2_orphan_scan_start(osb);
1213 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1214 wake_up(&osb->osb_mount_event);
1215 ocfs2_dismount_volume(sb, 1);
1223 static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
1225 const char *dev_name,
1228 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
1231 static struct file_system_type ocfs2_fs_type = {
1232 .owner = THIS_MODULE,
1234 .mount = ocfs2_mount,
1235 .kill_sb = kill_block_super,
1236 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
1239 MODULE_ALIAS_FS("ocfs2");
1241 static int ocfs2_check_set_options(struct super_block *sb,
1242 struct mount_options *options)
1244 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1245 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1246 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1247 mlog(ML_ERROR, "User quotas were requested, but this "
1248 "filesystem does not have the feature enabled.\n");
1251 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1252 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1253 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1254 mlog(ML_ERROR, "Group quotas were requested, but this "
1255 "filesystem does not have the feature enabled.\n");
1258 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1259 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1260 mlog(ML_ERROR, "ACL support requested but extended attributes "
1261 "feature is not enabled\n");
1264 /* No ACL setting specified? Use XATTR feature... */
1265 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1266 OCFS2_MOUNT_NO_POSIX_ACL))) {
1267 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1268 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1270 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1275 static int ocfs2_parse_options(struct super_block *sb,
1277 struct mount_options *mopt,
1280 int status, user_stack = 0;
1284 substring_t args[MAX_OPT_ARGS];
1286 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
1288 mopt->commit_interval = 0;
1289 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
1290 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1291 mopt->slot = OCFS2_INVALID_SLOT;
1292 mopt->localalloc_opt = -1;
1293 mopt->cluster_stack[0] = '\0';
1294 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
1295 mopt->dir_resv_level = -1;
1302 while ((p = strsep(&options, ",")) != NULL) {
1306 token = match_token(p, tokens, args);
1309 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
1312 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1315 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
1318 if (match_int(&args[0], &option)) {
1323 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
1325 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
1328 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
1331 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
1334 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1335 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1336 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
1339 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1340 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1341 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_ROFS;
1344 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1345 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1346 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_CONT;
1348 case Opt_data_ordered:
1349 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
1351 case Opt_data_writeback:
1352 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
1354 case Opt_user_xattr:
1355 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1357 case Opt_nouser_xattr:
1358 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1360 case Opt_atime_quantum:
1361 if (match_int(&args[0], &option)) {
1366 mopt->atime_quantum = option;
1369 if (match_int(&args[0], &option)) {
1374 mopt->slot = (s16)option;
1377 if (match_int(&args[0], &option)) {
1384 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
1385 mopt->commit_interval = HZ * option;
1387 case Opt_localalloc:
1388 if (match_int(&args[0], &option)) {
1393 mopt->localalloc_opt = option;
1395 case Opt_localflocks:
1397 * Changing this during remount could race
1398 * flock() requests, or "unbalance" existing
1399 * ones (e.g., a lock is taken in one mode but
1400 * dropped in the other). If users care enough
1401 * to flip locking modes during remount, we
1402 * could add a "local" flag to individual
1403 * flock structures for proper tracking of
1407 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1410 /* Check both that the option we were passed
1411 * is of the right length and that it is a proper
1412 * string of the right length.
1414 if (((args[0].to - args[0].from) !=
1415 OCFS2_STACK_LABEL_LEN) ||
1416 (strnlen(args[0].from,
1417 OCFS2_STACK_LABEL_LEN) !=
1418 OCFS2_STACK_LABEL_LEN)) {
1420 "Invalid cluster_stack option\n");
1424 memcpy(mopt->cluster_stack, args[0].from,
1425 OCFS2_STACK_LABEL_LEN);
1426 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
1428 * Open code the memcmp here as we don't have
1430 * ocfs2_userspace_stack().
1432 if (memcmp(mopt->cluster_stack,
1433 OCFS2_CLASSIC_CLUSTER_STACK,
1434 OCFS2_STACK_LABEL_LEN))
1438 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1441 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1444 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1446 case Opt_coherency_buffered:
1447 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1449 case Opt_coherency_full:
1450 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1453 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1454 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
1457 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1458 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1460 case Opt_resv_level:
1463 if (match_int(&args[0], &option)) {
1467 if (option >= OCFS2_MIN_RESV_LEVEL &&
1468 option < OCFS2_MAX_RESV_LEVEL)
1469 mopt->resv_level = option;
1471 case Opt_dir_resv_level:
1474 if (match_int(&args[0], &option)) {
1478 if (option >= OCFS2_MIN_RESV_LEVEL &&
1479 option < OCFS2_MAX_RESV_LEVEL)
1480 mopt->dir_resv_level = option;
1482 case Opt_journal_async_commit:
1483 mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
1487 "Unrecognized mount option \"%s\" "
1488 "or missing value\n", p);
1494 if (user_stack == 0) {
1495 /* Ensure only one heartbeat mode */
1496 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1497 OCFS2_MOUNT_HB_GLOBAL |
1498 OCFS2_MOUNT_HB_NONE);
1499 if (hweight32(tmp) != 1) {
1500 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1512 static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
1514 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
1515 unsigned long opts = osb->s_mount_opt;
1516 unsigned int local_alloc_megs;
1518 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1519 seq_printf(s, ",_netdev");
1520 if (opts & OCFS2_MOUNT_HB_LOCAL)
1521 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1523 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1525 seq_printf(s, ",%s", OCFS2_HB_NONE);
1527 if (opts & OCFS2_MOUNT_NOINTR)
1528 seq_printf(s, ",nointr");
1530 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1531 seq_printf(s, ",data=writeback");
1533 seq_printf(s, ",data=ordered");
1535 if (opts & OCFS2_MOUNT_BARRIER)
1536 seq_printf(s, ",barrier=1");
1538 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1539 seq_printf(s, ",errors=panic");
1540 else if (opts & OCFS2_MOUNT_ERRORS_CONT)
1541 seq_printf(s, ",errors=continue");
1543 seq_printf(s, ",errors=remount-ro");
1545 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1546 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1548 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
1550 if (osb->osb_commit_interval)
1551 seq_printf(s, ",commit=%u",
1552 (unsigned) (osb->osb_commit_interval / HZ));
1554 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
1555 if (local_alloc_megs != ocfs2_la_default_mb(osb))
1556 seq_printf(s, ",localalloc=%d", local_alloc_megs);
1558 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1559 seq_printf(s, ",localflocks,");
1561 if (osb->osb_cluster_stack[0])
1562 seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack,
1563 OCFS2_STACK_LABEL_LEN);
1564 if (opts & OCFS2_MOUNT_USRQUOTA)
1565 seq_printf(s, ",usrquota");
1566 if (opts & OCFS2_MOUNT_GRPQUOTA)
1567 seq_printf(s, ",grpquota");
1569 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1570 seq_printf(s, ",coherency=buffered");
1572 seq_printf(s, ",coherency=full");
1574 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1575 seq_printf(s, ",nouser_xattr");
1577 seq_printf(s, ",user_xattr");
1579 if (opts & OCFS2_MOUNT_INODE64)
1580 seq_printf(s, ",inode64");
1582 if (opts & OCFS2_MOUNT_POSIX_ACL)
1583 seq_printf(s, ",acl");
1585 seq_printf(s, ",noacl");
1587 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1588 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1590 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1591 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1593 if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
1594 seq_printf(s, ",journal_async_commit");
1599 static int __init ocfs2_init(void)
1603 status = init_ocfs2_uptodate_cache();
1607 status = ocfs2_initialize_mem_caches();
1611 ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
1617 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1618 if (!ocfs2_debugfs_root) {
1620 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
1624 ocfs2_set_locking_protocol();
1626 status = register_quota_format(&ocfs2_quota_format);
1629 status = register_filesystem(&ocfs2_fs_type);
1633 unregister_quota_format(&ocfs2_quota_format);
1635 destroy_workqueue(ocfs2_wq);
1636 debugfs_remove(ocfs2_debugfs_root);
1638 ocfs2_free_mem_caches();
1640 exit_ocfs2_uptodate_cache();
1646 static void __exit ocfs2_exit(void)
1649 flush_workqueue(ocfs2_wq);
1650 destroy_workqueue(ocfs2_wq);
1653 unregister_quota_format(&ocfs2_quota_format);
1655 debugfs_remove(ocfs2_debugfs_root);
1657 ocfs2_free_mem_caches();
1659 unregister_filesystem(&ocfs2_fs_type);
1661 exit_ocfs2_uptodate_cache();
1664 static void ocfs2_put_super(struct super_block *sb)
1666 trace_ocfs2_put_super(sb);
1668 ocfs2_sync_blockdev(sb);
1669 ocfs2_dismount_volume(sb, 0);
1672 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
1674 struct ocfs2_super *osb;
1675 u32 numbits, freebits;
1677 struct ocfs2_dinode *bm_lock;
1678 struct buffer_head *bh = NULL;
1679 struct inode *inode = NULL;
1681 trace_ocfs2_statfs(dentry->d_sb, buf);
1683 osb = OCFS2_SB(dentry->d_sb);
1685 inode = ocfs2_get_system_file_inode(osb,
1686 GLOBAL_BITMAP_SYSTEM_INODE,
1687 OCFS2_INVALID_SLOT);
1689 mlog(ML_ERROR, "failed to get bitmap inode\n");
1694 status = ocfs2_inode_lock(inode, &bh, 0);
1700 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1702 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1703 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1705 buf->f_type = OCFS2_SUPER_MAGIC;
1706 buf->f_bsize = dentry->d_sb->s_blocksize;
1707 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1708 buf->f_blocks = ((sector_t) numbits) *
1709 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1710 buf->f_bfree = ((sector_t) freebits) *
1711 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1712 buf->f_bavail = buf->f_bfree;
1713 buf->f_files = numbits;
1714 buf->f_ffree = freebits;
1715 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1717 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1718 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
1722 ocfs2_inode_unlock(inode, 0);
1733 static void ocfs2_inode_init_once(void *data)
1735 struct ocfs2_inode_info *oi = data;
1738 oi->ip_open_count = 0;
1739 spin_lock_init(&oi->ip_lock);
1740 ocfs2_extent_map_init(&oi->vfs_inode);
1741 INIT_LIST_HEAD(&oi->ip_io_markers);
1742 oi->ip_dir_start_lookup = 0;
1743 mutex_init(&oi->ip_unaligned_aio);
1744 init_rwsem(&oi->ip_alloc_sem);
1745 init_rwsem(&oi->ip_xattr_sem);
1746 mutex_init(&oi->ip_io_mutex);
1748 oi->ip_blkno = 0ULL;
1749 oi->ip_clusters = 0;
1751 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1753 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
1754 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
1755 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
1757 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
1758 &ocfs2_inode_caching_ops);
1760 inode_init_once(&oi->vfs_inode);
1763 static int ocfs2_initialize_mem_caches(void)
1765 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
1766 sizeof(struct ocfs2_inode_info),
1768 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1769 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
1770 ocfs2_inode_init_once);
1771 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1772 sizeof(struct ocfs2_dquot),
1774 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1777 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1778 sizeof(struct ocfs2_quota_chunk),
1780 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1782 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1783 !ocfs2_qf_chunk_cachep) {
1784 if (ocfs2_inode_cachep)
1785 kmem_cache_destroy(ocfs2_inode_cachep);
1786 if (ocfs2_dquot_cachep)
1787 kmem_cache_destroy(ocfs2_dquot_cachep);
1788 if (ocfs2_qf_chunk_cachep)
1789 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1796 static void ocfs2_free_mem_caches(void)
1799 * Make sure all delayed rcu free inodes are flushed before we
1803 if (ocfs2_inode_cachep)
1804 kmem_cache_destroy(ocfs2_inode_cachep);
1805 ocfs2_inode_cachep = NULL;
1807 if (ocfs2_dquot_cachep)
1808 kmem_cache_destroy(ocfs2_dquot_cachep);
1809 ocfs2_dquot_cachep = NULL;
1811 if (ocfs2_qf_chunk_cachep)
1812 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1813 ocfs2_qf_chunk_cachep = NULL;
1816 static int ocfs2_get_sector(struct super_block *sb,
1817 struct buffer_head **bh,
1821 if (!sb_set_blocksize(sb, sect_size)) {
1822 mlog(ML_ERROR, "unable to set blocksize\n");
1826 *bh = sb_getblk(sb, block);
1828 mlog_errno(-ENOMEM);
1832 if (!buffer_dirty(*bh))
1833 clear_buffer_uptodate(*bh);
1835 ll_rw_block(READ, 1, bh);
1836 wait_on_buffer(*bh);
1837 if (!buffer_uptodate(*bh)) {
1847 static int ocfs2_mount_volume(struct super_block *sb)
1850 int unlock_super = 0;
1851 struct ocfs2_super *osb = OCFS2_SB(sb);
1853 if (ocfs2_is_hard_readonly(osb))
1856 status = ocfs2_dlm_init(osb);
1862 status = ocfs2_super_lock(osb, 1);
1869 /* This will load up the node map and add ourselves to it. */
1870 status = ocfs2_find_slot(osb);
1876 /* load all node-local system inodes */
1877 status = ocfs2_init_local_system_inodes(osb);
1883 status = ocfs2_check_volume(osb);
1889 status = ocfs2_truncate_log_init(osb);
1895 ocfs2_super_unlock(osb, 1);
1900 static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1902 int tmp, hangup_needed = 0;
1903 struct ocfs2_super *osb = NULL;
1906 trace_ocfs2_dismount_volume(sb);
1912 debugfs_remove(osb->osb_ctxt);
1914 /* Orphan scan should be stopped as early as possible */
1915 ocfs2_orphan_scan_stop(osb);
1917 ocfs2_disable_quotas(osb);
1919 /* All dquots should be freed by now */
1920 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1921 /* Wait for worker to be done with the work structure in osb */
1922 cancel_work_sync(&osb->dquot_drop_work);
1924 ocfs2_shutdown_local_alloc(osb);
1926 ocfs2_truncate_log_shutdown(osb);
1928 /* This will disable recovery and flush any recovery work. */
1929 ocfs2_recovery_exit(osb);
1931 ocfs2_journal_shutdown(osb);
1933 ocfs2_sync_blockdev(sb);
1935 ocfs2_purge_refcount_trees(osb);
1937 /* No cluster connection means we've failed during mount, so skip
1938 * all the steps which depended on that to complete. */
1940 tmp = ocfs2_super_lock(osb, 1);
1947 if (osb->slot_num != OCFS2_INVALID_SLOT)
1948 ocfs2_put_slot(osb);
1951 ocfs2_super_unlock(osb, 1);
1953 ocfs2_release_system_inodes(osb);
1956 * If we're dismounting due to mount error, mount.ocfs2 will clean
1957 * up heartbeat. If we're a local mount, there is no heartbeat.
1958 * If we failed before we got a uuid_str yet, we can't stop
1959 * heartbeat. Otherwise, do it.
1961 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1962 !ocfs2_is_hard_readonly(osb))
1966 ocfs2_dlm_shutdown(osb, hangup_needed);
1968 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
1969 debugfs_remove(osb->osb_debug_root);
1972 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
1974 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1976 if (ocfs2_mount_local(osb))
1977 snprintf(nodestr, sizeof(nodestr), "local");
1979 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
1981 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1982 osb->dev_str, nodestr);
1984 ocfs2_delete_osb(osb);
1987 sb->s_fs_info = NULL;
1990 static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1991 unsigned uuid_bytes)
1996 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1998 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
1999 if (osb->uuid_str == NULL)
2002 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
2003 /* print with null */
2004 ret = snprintf(ptr, 3, "%02X", uuid[i]);
2005 if (ret != 2) /* drop super cleans up */
2007 /* then only advance past the last char */
2014 /* Make sure entire volume is addressable by our journal. Requires
2015 osb_clusters_at_boot to be valid and for the journal to have been
2016 initialized by ocfs2_journal_init(). */
2017 static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2021 ocfs2_clusters_to_blocks(osb->sb,
2022 osb->osb_clusters_at_boot) - 1;
2024 /* 32-bit block number is always OK. */
2025 if (max_block <= (u32)~0ULL)
2028 /* Volume is "huge", so see if our journal is new enough to
2030 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2031 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2032 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2033 JBD2_FEATURE_INCOMPAT_64BIT))) {
2034 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2035 "Enable the 'block64' journal option with tunefs.ocfs2");
2044 static int ocfs2_initialize_super(struct super_block *sb,
2045 struct buffer_head *bh,
2047 struct ocfs2_blockcheck_stats *stats)
2050 int i, cbits, bbits;
2051 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
2052 struct inode *inode = NULL;
2053 struct ocfs2_journal *journal;
2054 struct ocfs2_super *osb;
2057 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
2064 sb->s_fs_info = osb;
2065 sb->s_op = &ocfs2_sops;
2066 sb->s_d_op = &ocfs2_dentry_ops;
2067 sb->s_export_op = &ocfs2_export_ops;
2068 sb->s_qcop = &dquot_quotactl_sysfile_ops;
2069 sb->dq_op = &ocfs2_quota_operations;
2070 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
2071 sb->s_xattr = ocfs2_xattr_handlers;
2072 sb->s_time_gran = 1;
2073 sb->s_flags |= MS_NOATIME;
2074 /* this is needed to support O_LARGEFILE */
2075 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2076 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2077 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
2078 memcpy(sb->s_uuid, di->id2.i_super.s_uuid,
2079 sizeof(di->id2.i_super.s_uuid));
2081 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2083 for (i = 0; i < 3; i++)
2084 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2085 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2088 /* Save off for ocfs2_rw_direct */
2089 osb->s_sectsize_bits = blksize_bits(sector_size);
2090 BUG_ON(!osb->s_sectsize_bits);
2092 spin_lock_init(&osb->dc_task_lock);
2093 init_waitqueue_head(&osb->dc_event);
2094 osb->dc_work_sequence = 0;
2095 osb->dc_wake_sequence = 0;
2096 INIT_LIST_HEAD(&osb->blocked_lock_list);
2097 osb->blocked_lock_count = 0;
2098 spin_lock_init(&osb->osb_lock);
2099 spin_lock_init(&osb->osb_xattr_lock);
2100 ocfs2_init_steal_slots(osb);
2102 mutex_init(&osb->system_file_mutex);
2104 atomic_set(&osb->alloc_stats.moves, 0);
2105 atomic_set(&osb->alloc_stats.local_data, 0);
2106 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2107 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2108 atomic_set(&osb->alloc_stats.bg_extends, 0);
2110 /* Copy the blockcheck stats from the superblock probe */
2111 osb->osb_ecc_stats = *stats;
2113 ocfs2_init_node_maps(osb);
2115 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2116 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2118 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2119 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2120 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2126 ocfs2_orphan_scan_init(osb);
2128 status = ocfs2_recovery_init(osb);
2130 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2135 init_waitqueue_head(&osb->checkpoint_event);
2137 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2139 osb->slot_num = OCFS2_INVALID_SLOT;
2141 osb->s_xattr_inline_size = le16_to_cpu(
2142 di->id2.i_super.s_xattr_inline_size);
2144 osb->local_alloc_state = OCFS2_LA_UNUSED;
2145 osb->local_alloc_bh = NULL;
2146 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
2148 init_waitqueue_head(&osb->osb_mount_event);
2150 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2156 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2157 if (!osb->vol_label) {
2158 mlog(ML_ERROR, "unable to alloc vol label\n");
2163 osb->slot_recovery_generations =
2164 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2166 if (!osb->slot_recovery_generations) {
2172 init_waitqueue_head(&osb->osb_wipe_event);
2173 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2174 sizeof(*osb->osb_orphan_wipes),
2176 if (!osb->osb_orphan_wipes) {
2182 osb->osb_rf_lock_tree = RB_ROOT;
2184 osb->s_feature_compat =
2185 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2186 osb->s_feature_ro_compat =
2187 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2188 osb->s_feature_incompat =
2189 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2191 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2192 mlog(ML_ERROR, "couldn't mount because of unsupported "
2193 "optional features (%x).\n", i);
2197 if (!(osb->sb->s_flags & MS_RDONLY) &&
2198 (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
2199 mlog(ML_ERROR, "couldn't mount RDWR because of "
2200 "unsupported optional features (%x).\n", i);
2205 if (ocfs2_clusterinfo_valid(osb)) {
2206 osb->osb_stackflags =
2207 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
2208 strlcpy(osb->osb_cluster_stack,
2209 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
2210 OCFS2_STACK_LABEL_LEN + 1);
2211 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2213 "couldn't mount because of an invalid "
2214 "cluster stack label (%s) \n",
2215 osb->osb_cluster_stack);
2219 strlcpy(osb->osb_cluster_name,
2220 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
2221 OCFS2_CLUSTER_NAME_LEN + 1);
2223 /* The empty string is identical with classic tools that
2224 * don't know about s_cluster_info. */
2225 osb->osb_cluster_stack[0] = '\0';
2228 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2231 * This should be done in ocfs2_journal_init(), but unknown
2232 * ordering issues will cause the filesystem to crash.
2233 * If anyone wants to figure out what part of the code
2234 * refers to osb->journal before ocfs2_journal_init() is run,
2237 /* initialize our journal structure */
2239 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
2241 mlog(ML_ERROR, "unable to alloc journal\n");
2245 osb->journal = journal;
2246 journal->j_osb = osb;
2248 atomic_set(&journal->j_num_trans, 0);
2249 init_rwsem(&journal->j_trans_barrier);
2250 init_waitqueue_head(&journal->j_checkpointed);
2251 spin_lock_init(&journal->j_lock);
2252 journal->j_trans_id = (unsigned long) 1;
2253 INIT_LIST_HEAD(&journal->j_la_cleanups);
2254 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
2255 journal->j_state = OCFS2_JOURNAL_FREE;
2257 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2258 init_llist_head(&osb->dquot_drop_list);
2260 /* get some pseudo constants for clustersize bits */
2261 osb->s_clustersize_bits =
2262 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2263 osb->s_clustersize = 1 << osb->s_clustersize_bits;
2265 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2266 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2267 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2268 osb->s_clustersize);
2273 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2274 le32_to_cpu(di->i_clusters));
2276 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2279 mlog(ML_ERROR, "Volume too large "
2280 "to mount safely on this system");
2285 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2286 sizeof(di->id2.i_super.s_uuid))) {
2287 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2292 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2293 OCFS2_MAX_VOL_LABEL_LEN);
2294 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2295 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2296 osb->first_cluster_group_blkno =
2297 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2298 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
2299 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2300 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2301 (unsigned long long)osb->root_blkno,
2302 (unsigned long long)osb->system_dir_blkno,
2303 osb->s_clustersize_bits);
2305 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2306 if (!osb->osb_dlm_debug) {
2312 atomic_set(&osb->vol_state, VOLUME_INIT);
2314 /* load root, system_dir, and all global system inodes */
2315 status = ocfs2_init_global_system_inodes(osb);
2324 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2325 OCFS2_INVALID_SLOT);
2332 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
2333 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
2336 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2337 osb->s_feature_incompat) * 8;
2339 status = ocfs2_init_slot_info(osb);
2344 cleancache_init_shared_fs(sb);
2351 * will return: -EAGAIN if it is ok to keep searching for superblocks
2352 * -EINVAL if there is a bad superblock
2355 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2356 struct buffer_head *bh,
2358 struct ocfs2_blockcheck_stats *stats)
2360 int status = -EAGAIN;
2362 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2363 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
2364 /* We have to do a raw check of the feature here */
2365 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2366 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2367 status = ocfs2_block_check_validate(bh->b_data,
2375 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2376 mlog(ML_ERROR, "found superblock with incorrect block "
2377 "size: found %u, should be %u\n",
2378 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2380 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2381 OCFS2_MAJOR_REV_LEVEL ||
2382 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2383 OCFS2_MINOR_REV_LEVEL) {
2384 mlog(ML_ERROR, "found superblock with bad version: "
2385 "found %u.%u, should be %u.%u\n",
2386 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2387 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2388 OCFS2_MAJOR_REV_LEVEL,
2389 OCFS2_MINOR_REV_LEVEL);
2390 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2391 mlog(ML_ERROR, "bad block number on superblock: "
2392 "found %llu, should be %llu\n",
2393 (unsigned long long)le64_to_cpu(di->i_blkno),
2394 (unsigned long long)bh->b_blocknr);
2395 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2396 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2397 mlog(ML_ERROR, "bad cluster size found: %u\n",
2398 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2399 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2400 mlog(ML_ERROR, "bad root_blkno: 0\n");
2401 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2402 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2403 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2405 "Superblock slots found greater than file system "
2406 "maximum: found %u, max %u\n",
2407 le16_to_cpu(di->id2.i_super.s_max_slots),
2416 if (status && status != -EAGAIN)
2421 static int ocfs2_check_volume(struct ocfs2_super *osb)
2426 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2430 /* Init our journal object. */
2431 status = ocfs2_journal_init(osb->journal, &dirty);
2433 mlog(ML_ERROR, "Could not initialize journal!\n");
2437 /* Now that journal has been initialized, check to make sure
2438 entire volume is addressable. */
2439 status = ocfs2_journal_addressable(osb);
2443 /* If the journal was unmounted cleanly then we don't want to
2444 * recover anything. Otherwise, journal_load will do that
2445 * dirty work for us :) */
2447 status = ocfs2_journal_wipe(osb->journal, 0);
2453 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2454 "unmounted cleanly, recovering it.\n", osb->dev_str);
2457 local = ocfs2_mount_local(osb);
2459 /* will play back anything left in the journal. */
2460 status = ocfs2_journal_load(osb->journal, local, dirty);
2462 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2466 if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
2467 jbd2_journal_set_features(osb->journal->j_journal,
2468 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2469 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2471 jbd2_journal_clear_features(osb->journal->j_journal,
2472 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2473 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2476 /* recover my local alloc if we didn't unmount cleanly. */
2477 status = ocfs2_begin_local_alloc_recovery(osb,
2484 /* we complete the recovery process after we've marked
2485 * ourselves as mounted. */
2488 status = ocfs2_load_local_alloc(osb);
2495 /* Recovery will be completed after we've mounted the
2496 * rest of the volume. */
2498 osb->local_alloc_copy = local_alloc;
2502 /* go through each journal, trylock it and if you get the
2503 * lock, and it's marked as dirty, set the bit in the recover
2504 * map and launch a recovery thread for it. */
2505 status = ocfs2_mark_dead_nodes(osb);
2511 status = ocfs2_compute_replay_slots(osb);
2524 * The routine gets called from dismount or close whenever a dismount on
2525 * volume is requested and the osb open count becomes 1.
2526 * It will remove the osb from the global list and also free up all the
2527 * initialized resources and fileobject.
2529 static void ocfs2_delete_osb(struct ocfs2_super *osb)
2531 /* This function assumes that the caller has the main osb resource */
2533 ocfs2_free_slot_info(osb);
2535 kfree(osb->osb_orphan_wipes);
2536 kfree(osb->slot_recovery_generations);
2538 * This belongs in journal shutdown, but because we have to
2539 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2542 kfree(osb->journal);
2543 kfree(osb->local_alloc_copy);
2544 kfree(osb->uuid_str);
2545 kfree(osb->vol_label);
2546 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2547 memset(osb, 0, sizeof(struct ocfs2_super));
2550 /* Depending on the mount option passed, perform one of the following:
2551 * Put OCFS2 into a readonly state (default)
2552 * Return EIO so that only the process errs
2553 * Fix the error as if fsck.ocfs2 -y
2556 static int ocfs2_handle_error(struct super_block *sb)
2558 struct ocfs2_super *osb = OCFS2_SB(sb);
2561 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2562 pr_crit("On-disk corruption discovered. "
2563 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
2565 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) {
2566 panic("OCFS2: (device %s): panic forced after error\n",
2568 } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) {
2569 pr_crit("OCFS2: Returning error to the calling process.\n");
2571 } else { /* default option */
2573 if (sb->s_flags & MS_RDONLY &&
2574 (ocfs2_is_soft_readonly(osb) ||
2575 ocfs2_is_hard_readonly(osb)))
2578 pr_crit("OCFS2: File system is now read-only.\n");
2579 sb->s_flags |= MS_RDONLY;
2580 ocfs2_set_ro_flag(osb, 0);
2586 int __ocfs2_error(struct super_block *sb, const char *function,
2587 const char *fmt, ...)
2589 struct va_format vaf;
2592 va_start(args, fmt);
2596 /* Not using mlog here because we want to show the actual
2597 * function the error came from. */
2598 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV",
2599 sb->s_id, function, &vaf);
2603 return ocfs2_handle_error(sb);
2606 /* Handle critical errors. This is intentionally more drastic than
2607 * ocfs2_handle_error, so we only use for things like journal errors,
2609 void __ocfs2_abort(struct super_block *sb, const char *function,
2610 const char *fmt, ...)
2612 struct va_format vaf;
2615 va_start(args, fmt);
2620 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV",
2621 sb->s_id, function, &vaf);
2625 /* We don't have the cluster support yet to go straight to
2626 * hard readonly in here. Until then, we want to keep
2627 * ocfs2_abort() so that we can at least mark critical
2630 * TODO: This should abort the journal and alert other nodes
2631 * that our slot needs recovery. */
2633 /* Force a panic(). This stinks, but it's better than letting
2634 * things continue without having a proper hard readonly
2636 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2637 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
2638 ocfs2_handle_error(sb);
2642 * Void signal blockers, because in-kernel sigprocmask() only fails
2643 * when SIG_* is wrong.
2645 void ocfs2_block_signals(sigset_t *oldset)
2650 sigfillset(&blocked);
2651 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2655 void ocfs2_unblock_signals(sigset_t *oldset)
2657 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2661 module_init(ocfs2_init);
2662 module_exit(ocfs2_exit);