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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * super.c | |
5 | * | |
6 | * load/unload driver, mount/dismount volumes | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
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. | |
14 | * | |
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. | |
19 | * | |
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. | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/fs.h> | |
28 | #include <linux/types.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/highmem.h> | |
31 | #include <linux/utsname.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/random.h> | |
34 | #include <linux/statfs.h> | |
35 | #include <linux/moduleparam.h> | |
36 | #include <linux/blkdev.h> | |
37 | #include <linux/socket.h> | |
38 | #include <linux/inet.h> | |
39 | #include <linux/parser.h> | |
40 | #include <linux/crc32.h> | |
41 | #include <linux/debugfs.h> | |
d550071c | 42 | #include <linux/mount.h> |
ccd979bd MF |
43 | |
44 | #include <cluster/nodemanager.h> | |
45 | ||
46 | #define MLOG_MASK_PREFIX ML_SUPER | |
47 | #include <cluster/masklog.h> | |
48 | ||
49 | #include "ocfs2.h" | |
50 | ||
51 | /* this should be the only file to include a version 1 header */ | |
52 | #include "ocfs1_fs_compat.h" | |
53 | ||
54 | #include "alloc.h" | |
55 | #include "dlmglue.h" | |
56 | #include "export.h" | |
57 | #include "extent_map.h" | |
58 | #include "heartbeat.h" | |
59 | #include "inode.h" | |
60 | #include "journal.h" | |
61 | #include "localalloc.h" | |
62 | #include "namei.h" | |
63 | #include "slot_map.h" | |
64 | #include "super.h" | |
65 | #include "sysfile.h" | |
66 | #include "uptodate.h" | |
67 | #include "ver.h" | |
ccd979bd MF |
68 | |
69 | #include "buffer_head_io.h" | |
70 | ||
e18b890b | 71 | static struct kmem_cache *ocfs2_inode_cachep = NULL; |
ccd979bd | 72 | |
ccd979bd MF |
73 | /* OCFS2 needs to schedule several differnt types of work which |
74 | * require cluster locking, disk I/O, recovery waits, etc. Since these | |
75 | * types of work tend to be heavy we avoid using the kernel events | |
76 | * workqueue and schedule on our own. */ | |
77 | struct workqueue_struct *ocfs2_wq = NULL; | |
78 | ||
79 | static struct dentry *ocfs2_debugfs_root = NULL; | |
80 | ||
81 | MODULE_AUTHOR("Oracle"); | |
82 | MODULE_LICENSE("GPL"); | |
83 | ||
c0123ade TY |
84 | struct mount_options |
85 | { | |
d147b3d6 | 86 | unsigned long commit_interval; |
c0123ade TY |
87 | unsigned long mount_opt; |
88 | unsigned int atime_quantum; | |
89 | signed short slot; | |
90 | }; | |
91 | ||
ccd979bd | 92 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 93 | struct mount_options *mopt, |
baf4661a | 94 | int is_remount); |
d550071c | 95 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); |
ccd979bd MF |
96 | static void ocfs2_put_super(struct super_block *sb); |
97 | static int ocfs2_mount_volume(struct super_block *sb); | |
98 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
99 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
100 | static int ocfs2_initialize_mem_caches(void); | |
101 | static void ocfs2_free_mem_caches(void); | |
102 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
103 | ||
726c3342 | 104 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
105 | |
106 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
107 | ||
108 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
109 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
bddb8eb3 | 110 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
ccd979bd MF |
111 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb); |
112 | static int ocfs2_check_volume(struct ocfs2_super *osb); | |
113 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
114 | struct buffer_head *bh, | |
115 | u32 sectsize); | |
116 | static int ocfs2_initialize_super(struct super_block *sb, | |
117 | struct buffer_head *bh, | |
118 | int sector_size); | |
119 | static int ocfs2_get_sector(struct super_block *sb, | |
120 | struct buffer_head **bh, | |
121 | int block, | |
122 | int sect_size); | |
123 | static void ocfs2_write_super(struct super_block *sb); | |
124 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
125 | static void ocfs2_destroy_inode(struct inode *inode); | |
126 | ||
ee9b6d61 | 127 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
128 | .statfs = ocfs2_statfs, |
129 | .alloc_inode = ocfs2_alloc_inode, | |
130 | .destroy_inode = ocfs2_destroy_inode, | |
131 | .drop_inode = ocfs2_drop_inode, | |
132 | .clear_inode = ocfs2_clear_inode, | |
133 | .delete_inode = ocfs2_delete_inode, | |
134 | .sync_fs = ocfs2_sync_fs, | |
135 | .write_super = ocfs2_write_super, | |
136 | .put_super = ocfs2_put_super, | |
137 | .remount_fs = ocfs2_remount, | |
d550071c | 138 | .show_options = ocfs2_show_options, |
ccd979bd MF |
139 | }; |
140 | ||
141 | enum { | |
142 | Opt_barrier, | |
143 | Opt_err_panic, | |
144 | Opt_err_ro, | |
145 | Opt_intr, | |
146 | Opt_nointr, | |
147 | Opt_hb_none, | |
148 | Opt_hb_local, | |
149 | Opt_data_ordered, | |
150 | Opt_data_writeback, | |
7f1a37e3 | 151 | Opt_atime_quantum, |
baf4661a | 152 | Opt_slot, |
d147b3d6 | 153 | Opt_commit, |
ccd979bd MF |
154 | Opt_err, |
155 | }; | |
156 | ||
157 | static match_table_t tokens = { | |
158 | {Opt_barrier, "barrier=%u"}, | |
159 | {Opt_err_panic, "errors=panic"}, | |
160 | {Opt_err_ro, "errors=remount-ro"}, | |
161 | {Opt_intr, "intr"}, | |
162 | {Opt_nointr, "nointr"}, | |
163 | {Opt_hb_none, OCFS2_HB_NONE}, | |
164 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
165 | {Opt_data_ordered, "data=ordered"}, | |
166 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 167 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 168 | {Opt_slot, "preferred_slot=%u"}, |
d147b3d6 | 169 | {Opt_commit, "commit=%u"}, |
ccd979bd MF |
170 | {Opt_err, NULL} |
171 | }; | |
172 | ||
173 | /* | |
174 | * write_super and sync_fs ripped right out of ext3. | |
175 | */ | |
176 | static void ocfs2_write_super(struct super_block *sb) | |
177 | { | |
7892f2f4 | 178 | if (mutex_trylock(&sb->s_lock) != 0) |
ccd979bd MF |
179 | BUG(); |
180 | sb->s_dirt = 0; | |
181 | } | |
182 | ||
183 | static int ocfs2_sync_fs(struct super_block *sb, int wait) | |
184 | { | |
bddb8eb3 | 185 | int status; |
ccd979bd MF |
186 | tid_t target; |
187 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
188 | ||
189 | sb->s_dirt = 0; | |
190 | ||
191 | if (ocfs2_is_hard_readonly(osb)) | |
192 | return -EROFS; | |
193 | ||
194 | if (wait) { | |
195 | status = ocfs2_flush_truncate_log(osb); | |
196 | if (status < 0) | |
197 | mlog_errno(status); | |
198 | } else { | |
199 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
200 | } | |
201 | ||
202 | if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { | |
203 | if (wait) | |
204 | log_wait_commit(OCFS2_SB(sb)->journal->j_journal, | |
205 | target); | |
206 | } | |
207 | return 0; | |
208 | } | |
209 | ||
210 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) | |
211 | { | |
212 | struct inode *new = NULL; | |
213 | int status = 0; | |
214 | int i; | |
215 | ||
216 | mlog_entry_void(); | |
217 | ||
24c19ef4 | 218 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE); |
ccd979bd MF |
219 | if (IS_ERR(new)) { |
220 | status = PTR_ERR(new); | |
221 | mlog_errno(status); | |
222 | goto bail; | |
223 | } | |
224 | osb->root_inode = new; | |
225 | ||
24c19ef4 | 226 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE); |
ccd979bd MF |
227 | if (IS_ERR(new)) { |
228 | status = PTR_ERR(new); | |
229 | mlog_errno(status); | |
230 | goto bail; | |
231 | } | |
232 | osb->sys_root_inode = new; | |
233 | ||
234 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
235 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
236 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
237 | if (!new) { | |
238 | ocfs2_release_system_inodes(osb); | |
239 | status = -EINVAL; | |
240 | mlog_errno(status); | |
241 | /* FIXME: Should ERROR_RO_FS */ | |
242 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
243 | "possibly corrupt fs?", i); | |
244 | goto bail; | |
245 | } | |
246 | // the array now has one ref, so drop this one | |
247 | iput(new); | |
248 | } | |
249 | ||
250 | bail: | |
251 | mlog_exit(status); | |
252 | return status; | |
253 | } | |
254 | ||
255 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
256 | { | |
257 | struct inode *new = NULL; | |
258 | int status = 0; | |
259 | int i; | |
260 | ||
261 | mlog_entry_void(); | |
262 | ||
263 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
264 | i < NUM_SYSTEM_INODES; | |
265 | i++) { | |
266 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
267 | if (!new) { | |
268 | ocfs2_release_system_inodes(osb); | |
269 | status = -EINVAL; | |
270 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
271 | status, i, osb->slot_num); | |
272 | goto bail; | |
273 | } | |
274 | /* the array now has one ref, so drop this one */ | |
275 | iput(new); | |
276 | } | |
277 | ||
278 | bail: | |
279 | mlog_exit(status); | |
280 | return status; | |
281 | } | |
282 | ||
bddb8eb3 | 283 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 284 | { |
bddb8eb3 | 285 | int i; |
ccd979bd MF |
286 | struct inode *inode; |
287 | ||
288 | mlog_entry_void(); | |
289 | ||
290 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
291 | inode = osb->system_inodes[i]; | |
292 | if (inode) { | |
293 | iput(inode); | |
294 | osb->system_inodes[i] = NULL; | |
295 | } | |
296 | } | |
297 | ||
298 | inode = osb->sys_root_inode; | |
299 | if (inode) { | |
300 | iput(inode); | |
301 | osb->sys_root_inode = NULL; | |
302 | } | |
303 | ||
304 | inode = osb->root_inode; | |
305 | if (inode) { | |
306 | iput(inode); | |
307 | osb->root_inode = NULL; | |
308 | } | |
309 | ||
bddb8eb3 | 310 | mlog_exit(0); |
ccd979bd MF |
311 | } |
312 | ||
313 | /* We're allocating fs objects, use GFP_NOFS */ | |
314 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
315 | { | |
316 | struct ocfs2_inode_info *oi; | |
317 | ||
e6b4f8da | 318 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
319 | if (!oi) |
320 | return NULL; | |
321 | ||
322 | return &oi->vfs_inode; | |
323 | } | |
324 | ||
325 | static void ocfs2_destroy_inode(struct inode *inode) | |
326 | { | |
327 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
328 | } | |
329 | ||
5a254031 MF |
330 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
331 | unsigned int cbits) | |
ccd979bd | 332 | { |
5a254031 MF |
333 | unsigned int bytes = 1 << cbits; |
334 | unsigned int trim = bytes; | |
335 | unsigned int bitshift = 32; | |
336 | ||
337 | /* | |
338 | * i_size and all block offsets in ocfs2 are always 64 bits | |
339 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
340 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
341 | */ |
342 | ||
343 | #if BITS_PER_LONG == 32 | |
344 | # if defined(CONFIG_LBD) | |
2ecd05ae | 345 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
346 | /* |
347 | * We might be limited by page cache size. | |
348 | */ | |
349 | if (bytes > PAGE_CACHE_SIZE) { | |
350 | bytes = PAGE_CACHE_SIZE; | |
351 | trim = 1; | |
352 | /* | |
353 | * Shift by 31 here so that we don't get larger than | |
354 | * MAX_LFS_FILESIZE | |
355 | */ | |
356 | bitshift = 31; | |
357 | } | |
ccd979bd | 358 | # else |
5a254031 MF |
359 | /* |
360 | * We are limited by the size of sector_t. Use block size, as | |
361 | * that's what we expose to the VFS. | |
362 | */ | |
363 | bytes = 1 << bbits; | |
364 | trim = 1; | |
365 | bitshift = 31; | |
ccd979bd MF |
366 | # endif |
367 | #endif | |
368 | ||
5a254031 MF |
369 | /* |
370 | * Trim by a whole cluster when we can actually approach the | |
371 | * on-disk limits. Otherwise we can overflow i_clusters when | |
372 | * an extent start is at the max offset. | |
373 | */ | |
374 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
375 | } |
376 | ||
377 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
378 | { | |
379 | int incompat_features; | |
380 | int ret = 0; | |
c0123ade | 381 | struct mount_options parsed_options; |
ccd979bd MF |
382 | struct ocfs2_super *osb = OCFS2_SB(sb); |
383 | ||
c0123ade | 384 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { |
ccd979bd MF |
385 | ret = -EINVAL; |
386 | goto out; | |
387 | } | |
388 | ||
389 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
c0123ade | 390 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
ccd979bd MF |
391 | ret = -EINVAL; |
392 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
393 | goto out; | |
394 | } | |
395 | ||
396 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 397 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
398 | ret = -EINVAL; |
399 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
400 | goto out; | |
401 | } | |
402 | ||
403 | /* We're going to/from readonly mode. */ | |
404 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
405 | /* Lock here so the check of HARD_RO and the potential | |
406 | * setting of SOFT_RO is atomic. */ | |
407 | spin_lock(&osb->osb_lock); | |
408 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
409 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
410 | ret = -EROFS; | |
411 | goto unlock_osb; | |
412 | } | |
413 | ||
414 | if (*flags & MS_RDONLY) { | |
415 | mlog(0, "Going to ro mode.\n"); | |
416 | sb->s_flags |= MS_RDONLY; | |
417 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
418 | } else { | |
419 | mlog(0, "Making ro filesystem writeable.\n"); | |
420 | ||
421 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
422 | mlog(ML_ERROR, "Cannot remount RDWR " | |
423 | "filesystem due to previous errors.\n"); | |
424 | ret = -EROFS; | |
425 | goto unlock_osb; | |
426 | } | |
427 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
428 | if (incompat_features) { | |
429 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
430 | "of unsupported optional features " | |
431 | "(%x).\n", incompat_features); | |
432 | ret = -EINVAL; | |
433 | goto unlock_osb; | |
434 | } | |
435 | sb->s_flags &= ~MS_RDONLY; | |
436 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
437 | } | |
438 | unlock_osb: | |
439 | spin_unlock(&osb->osb_lock); | |
440 | } | |
441 | ||
442 | if (!ret) { | |
ccd979bd MF |
443 | /* Only save off the new mount options in case of a successful |
444 | * remount. */ | |
c0123ade TY |
445 | osb->s_mount_opt = parsed_options.mount_opt; |
446 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
447 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
448 | if (parsed_options.commit_interval) |
449 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
450 | |
451 | if (!ocfs2_is_hard_readonly(osb)) | |
452 | ocfs2_set_journal_params(osb); | |
ccd979bd MF |
453 | } |
454 | out: | |
455 | return ret; | |
456 | } | |
457 | ||
458 | static int ocfs2_sb_probe(struct super_block *sb, | |
459 | struct buffer_head **bh, | |
460 | int *sector_size) | |
461 | { | |
bddb8eb3 | 462 | int status, tmpstat; |
ccd979bd MF |
463 | struct ocfs1_vol_disk_hdr *hdr; |
464 | struct ocfs2_dinode *di; | |
465 | int blksize; | |
466 | ||
467 | *bh = NULL; | |
468 | ||
469 | /* may be > 512 */ | |
470 | *sector_size = bdev_hardsect_size(sb->s_bdev); | |
471 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { | |
472 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
473 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
474 | status = -EINVAL; | |
475 | goto bail; | |
476 | } | |
477 | ||
478 | /* Can this really happen? */ | |
479 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
480 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
481 | ||
482 | /* check block zero for old format */ | |
483 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
484 | if (status < 0) { | |
485 | mlog_errno(status); | |
486 | goto bail; | |
487 | } | |
488 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
489 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
490 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
491 | hdr->major_version, hdr->minor_version); | |
492 | status = -EINVAL; | |
493 | } | |
494 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
495 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
496 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
497 | hdr->signature); | |
498 | status = -EINVAL; | |
499 | } | |
500 | brelse(*bh); | |
501 | *bh = NULL; | |
502 | if (status < 0) { | |
503 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
504 | "upgraded before mounting with ocfs v2\n"); | |
505 | goto bail; | |
506 | } | |
507 | ||
508 | /* | |
509 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
510 | * blocksizes. 4096 is the maximum blocksize because it is | |
511 | * the minimum clustersize. | |
512 | */ | |
513 | status = -EINVAL; | |
514 | for (blksize = *sector_size; | |
515 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
516 | blksize <<= 1) { | |
517 | tmpstat = ocfs2_get_sector(sb, bh, | |
518 | OCFS2_SUPER_BLOCK_BLKNO, | |
519 | blksize); | |
520 | if (tmpstat < 0) { | |
521 | status = tmpstat; | |
522 | mlog_errno(status); | |
523 | goto bail; | |
524 | } | |
525 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
526 | status = ocfs2_verify_volume(di, *bh, blksize); | |
527 | if (status >= 0) | |
528 | goto bail; | |
529 | brelse(*bh); | |
530 | *bh = NULL; | |
531 | if (status != -EAGAIN) | |
532 | break; | |
533 | } | |
534 | ||
535 | bail: | |
536 | return status; | |
537 | } | |
538 | ||
c271c5c2 SM |
539 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
540 | { | |
541 | if (ocfs2_mount_local(osb)) { | |
542 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
543 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
544 | "mounted device.\n"); | |
545 | return -EINVAL; | |
546 | } | |
547 | } | |
548 | ||
549 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { | |
550 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb)) { | |
551 | mlog(ML_ERROR, "Heartbeat has to be started to mount " | |
552 | "a read-write clustered device.\n"); | |
553 | return -EINVAL; | |
554 | } | |
555 | } | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
ccd979bd MF |
560 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
561 | { | |
562 | struct dentry *root; | |
563 | int status, sector_size; | |
c0123ade | 564 | struct mount_options parsed_options; |
ccd979bd MF |
565 | struct inode *inode = NULL; |
566 | struct ocfs2_super *osb = NULL; | |
567 | struct buffer_head *bh = NULL; | |
c271c5c2 | 568 | char nodestr[8]; |
ccd979bd MF |
569 | |
570 | mlog_entry("%p, %p, %i", sb, data, silent); | |
571 | ||
c0123ade | 572 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
573 | status = -EINVAL; |
574 | goto read_super_error; | |
575 | } | |
576 | ||
c271c5c2 SM |
577 | /* for now we only have one cluster/node, make sure we see it |
578 | * in the heartbeat universe */ | |
c0123ade | 579 | if (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL) { |
c271c5c2 SM |
580 | if (!o2hb_check_local_node_heartbeating()) { |
581 | status = -EINVAL; | |
582 | goto read_super_error; | |
583 | } | |
584 | } | |
585 | ||
ccd979bd MF |
586 | /* probe for superblock */ |
587 | status = ocfs2_sb_probe(sb, &bh, §or_size); | |
588 | if (status < 0) { | |
589 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
590 | goto read_super_error; | |
591 | } | |
592 | ||
593 | status = ocfs2_initialize_super(sb, bh, sector_size); | |
594 | osb = OCFS2_SB(sb); | |
595 | if (status < 0) { | |
596 | mlog_errno(status); | |
597 | goto read_super_error; | |
598 | } | |
599 | brelse(bh); | |
600 | bh = NULL; | |
c0123ade TY |
601 | osb->s_mount_opt = parsed_options.mount_opt; |
602 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
603 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 604 | osb->osb_commit_interval = parsed_options.commit_interval; |
ccd979bd MF |
605 | |
606 | sb->s_magic = OCFS2_SUPER_MAGIC; | |
607 | ||
608 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, | |
609 | * heartbeat=none */ | |
610 | if (bdev_read_only(sb->s_bdev)) { | |
611 | if (!(sb->s_flags & MS_RDONLY)) { | |
612 | status = -EACCES; | |
613 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
614 | "mount was not specified.\n"); | |
615 | goto read_super_error; | |
616 | } | |
617 | ||
618 | /* You should not be able to start a local heartbeat | |
619 | * on a readonly device. */ | |
620 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
621 | status = -EROFS; | |
622 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
623 | "device.\n"); | |
624 | goto read_super_error; | |
625 | } | |
626 | ||
627 | status = ocfs2_check_journals_nolocks(osb); | |
628 | if (status < 0) { | |
629 | if (status == -EROFS) | |
630 | mlog(ML_ERROR, "Recovery required on readonly " | |
631 | "file system, but write access is " | |
632 | "unavailable.\n"); | |
633 | else | |
634 | mlog_errno(status); | |
635 | goto read_super_error; | |
636 | } | |
637 | ||
638 | ocfs2_set_ro_flag(osb, 1); | |
639 | ||
640 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
641 | "services will be utilized for this mount. Recovery " | |
642 | "will be skipped.\n"); | |
643 | } | |
644 | ||
645 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
646 | if (sb->s_flags & MS_RDONLY) |
647 | ocfs2_set_ro_flag(osb, 0); | |
648 | } | |
649 | ||
c271c5c2 SM |
650 | status = ocfs2_verify_heartbeat(osb); |
651 | if (status < 0) { | |
652 | mlog_errno(status); | |
653 | goto read_super_error; | |
654 | } | |
655 | ||
ccd979bd MF |
656 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
657 | ocfs2_debugfs_root); | |
658 | if (!osb->osb_debug_root) { | |
659 | status = -EINVAL; | |
660 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
661 | goto read_super_error; | |
662 | } | |
663 | ||
664 | status = ocfs2_mount_volume(sb); | |
665 | if (osb->root_inode) | |
666 | inode = igrab(osb->root_inode); | |
667 | ||
668 | if (status < 0) | |
669 | goto read_super_error; | |
670 | ||
671 | if (!inode) { | |
672 | status = -EIO; | |
673 | mlog_errno(status); | |
674 | goto read_super_error; | |
675 | } | |
676 | ||
677 | root = d_alloc_root(inode); | |
678 | if (!root) { | |
679 | status = -ENOMEM; | |
680 | mlog_errno(status); | |
681 | goto read_super_error; | |
682 | } | |
683 | ||
684 | sb->s_root = root; | |
685 | ||
686 | ocfs2_complete_mount_recovery(osb); | |
687 | ||
c271c5c2 SM |
688 | if (ocfs2_mount_local(osb)) |
689 | snprintf(nodestr, sizeof(nodestr), "local"); | |
690 | else | |
691 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
692 | ||
693 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 694 | "with %s data mode.\n", |
c271c5c2 | 695 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
696 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
697 | "ordered"); | |
698 | ||
699 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
700 | wake_up(&osb->osb_mount_event); | |
701 | ||
702 | mlog_exit(status); | |
703 | return status; | |
704 | ||
705 | read_super_error: | |
706 | if (bh != NULL) | |
707 | brelse(bh); | |
708 | ||
709 | if (inode) | |
710 | iput(inode); | |
711 | ||
712 | if (osb) { | |
713 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
714 | wake_up(&osb->osb_mount_event); | |
715 | ocfs2_dismount_volume(sb, 1); | |
716 | } | |
717 | ||
718 | mlog_exit(status); | |
719 | return status; | |
720 | } | |
721 | ||
454e2398 DH |
722 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
723 | int flags, | |
724 | const char *dev_name, | |
725 | void *data, | |
726 | struct vfsmount *mnt) | |
ccd979bd | 727 | { |
454e2398 DH |
728 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
729 | mnt); | |
ccd979bd MF |
730 | } |
731 | ||
732 | static struct file_system_type ocfs2_fs_type = { | |
733 | .owner = THIS_MODULE, | |
734 | .name = "ocfs2", | |
735 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
736 | * the fs? */ | |
737 | .kill_sb = kill_block_super, /* set to the generic one | |
738 | * right now, but do we | |
739 | * need to change that? */ | |
1ba9da2f | 740 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
741 | .next = NULL |
742 | }; | |
743 | ||
744 | static int ocfs2_parse_options(struct super_block *sb, | |
745 | char *options, | |
c0123ade | 746 | struct mount_options *mopt, |
ccd979bd MF |
747 | int is_remount) |
748 | { | |
749 | int status; | |
750 | char *p; | |
751 | ||
752 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
753 | options ? options : "(none)"); | |
754 | ||
d147b3d6 | 755 | mopt->commit_interval = 0; |
c0123ade TY |
756 | mopt->mount_opt = 0; |
757 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
758 | mopt->slot = OCFS2_INVALID_SLOT; | |
ccd979bd MF |
759 | |
760 | if (!options) { | |
761 | status = 1; | |
762 | goto bail; | |
763 | } | |
764 | ||
765 | while ((p = strsep(&options, ",")) != NULL) { | |
766 | int token, option; | |
767 | substring_t args[MAX_OPT_ARGS]; | |
768 | ||
769 | if (!*p) | |
770 | continue; | |
771 | ||
772 | token = match_token(p, tokens, args); | |
773 | switch (token) { | |
774 | case Opt_hb_local: | |
c0123ade | 775 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
776 | break; |
777 | case Opt_hb_none: | |
c0123ade | 778 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
779 | break; |
780 | case Opt_barrier: | |
781 | if (match_int(&args[0], &option)) { | |
782 | status = 0; | |
783 | goto bail; | |
784 | } | |
785 | if (option) | |
c0123ade | 786 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 787 | else |
c0123ade | 788 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
789 | break; |
790 | case Opt_intr: | |
c0123ade | 791 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
792 | break; |
793 | case Opt_nointr: | |
c0123ade | 794 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
795 | break; |
796 | case Opt_err_panic: | |
c0123ade | 797 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
798 | break; |
799 | case Opt_err_ro: | |
c0123ade | 800 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
801 | break; |
802 | case Opt_data_ordered: | |
c0123ade | 803 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
804 | break; |
805 | case Opt_data_writeback: | |
c0123ade | 806 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 807 | break; |
7f1a37e3 TY |
808 | case Opt_atime_quantum: |
809 | if (match_int(&args[0], &option)) { | |
810 | status = 0; | |
811 | goto bail; | |
812 | } | |
813 | if (option >= 0) | |
c0123ade | 814 | mopt->atime_quantum = option; |
7f1a37e3 | 815 | break; |
baf4661a SM |
816 | case Opt_slot: |
817 | option = 0; | |
818 | if (match_int(&args[0], &option)) { | |
819 | status = 0; | |
820 | goto bail; | |
821 | } | |
822 | if (option) | |
c0123ade | 823 | mopt->slot = (s16)option; |
baf4661a | 824 | break; |
d147b3d6 MF |
825 | case Opt_commit: |
826 | option = 0; | |
827 | if (match_int(&args[0], &option)) { | |
828 | status = 0; | |
829 | goto bail; | |
830 | } | |
831 | if (option < 0) | |
832 | return 0; | |
833 | if (option == 0) | |
834 | option = JBD_DEFAULT_MAX_COMMIT_AGE; | |
835 | mopt->commit_interval = HZ * option; | |
836 | break; | |
ccd979bd MF |
837 | default: |
838 | mlog(ML_ERROR, | |
839 | "Unrecognized mount option \"%s\" " | |
840 | "or missing value\n", p); | |
841 | status = 0; | |
842 | goto bail; | |
843 | } | |
844 | } | |
845 | ||
846 | status = 1; | |
847 | ||
848 | bail: | |
849 | mlog_exit(status); | |
850 | return status; | |
851 | } | |
852 | ||
d550071c SM |
853 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) |
854 | { | |
855 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
856 | unsigned long opts = osb->s_mount_opt; | |
857 | ||
858 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
859 | seq_printf(s, ",_netdev,heartbeat=local"); | |
860 | else | |
861 | seq_printf(s, ",heartbeat=none"); | |
862 | ||
863 | if (opts & OCFS2_MOUNT_NOINTR) | |
864 | seq_printf(s, ",nointr"); | |
865 | ||
866 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
867 | seq_printf(s, ",data=writeback"); | |
868 | else | |
869 | seq_printf(s, ",data=ordered"); | |
870 | ||
871 | if (opts & OCFS2_MOUNT_BARRIER) | |
872 | seq_printf(s, ",barrier=1"); | |
873 | ||
874 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
875 | seq_printf(s, ",errors=panic"); | |
876 | else | |
877 | seq_printf(s, ",errors=remount-ro"); | |
878 | ||
879 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
880 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
881 | ||
882 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
883 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
884 | ||
d147b3d6 MF |
885 | if (osb->osb_commit_interval) |
886 | seq_printf(s, ",commit=%u", | |
887 | (unsigned) (osb->osb_commit_interval / HZ)); | |
888 | ||
d550071c SM |
889 | return 0; |
890 | } | |
891 | ||
ccd979bd MF |
892 | static int __init ocfs2_init(void) |
893 | { | |
894 | int status; | |
895 | ||
896 | mlog_entry_void(); | |
897 | ||
898 | ocfs2_print_version(); | |
899 | ||
ccd979bd MF |
900 | status = init_ocfs2_uptodate_cache(); |
901 | if (status < 0) { | |
902 | mlog_errno(status); | |
903 | goto leave; | |
904 | } | |
905 | ||
906 | status = ocfs2_initialize_mem_caches(); | |
907 | if (status < 0) { | |
908 | mlog_errno(status); | |
909 | goto leave; | |
910 | } | |
911 | ||
912 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
913 | if (!ocfs2_wq) { | |
914 | status = -ENOMEM; | |
915 | goto leave; | |
916 | } | |
917 | ||
ccd979bd MF |
918 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
919 | if (!ocfs2_debugfs_root) { | |
920 | status = -EFAULT; | |
921 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
922 | } | |
923 | ||
924 | leave: | |
925 | if (status < 0) { | |
926 | ocfs2_free_mem_caches(); | |
927 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
928 | } |
929 | ||
930 | mlog_exit(status); | |
931 | ||
932 | if (status >= 0) { | |
933 | return register_filesystem(&ocfs2_fs_type); | |
934 | } else | |
935 | return -1; | |
936 | } | |
937 | ||
938 | static void __exit ocfs2_exit(void) | |
939 | { | |
940 | mlog_entry_void(); | |
941 | ||
942 | if (ocfs2_wq) { | |
943 | flush_workqueue(ocfs2_wq); | |
944 | destroy_workqueue(ocfs2_wq); | |
945 | } | |
946 | ||
947 | debugfs_remove(ocfs2_debugfs_root); | |
948 | ||
949 | ocfs2_free_mem_caches(); | |
950 | ||
951 | unregister_filesystem(&ocfs2_fs_type); | |
952 | ||
ccd979bd MF |
953 | exit_ocfs2_uptodate_cache(); |
954 | ||
955 | mlog_exit_void(); | |
956 | } | |
957 | ||
958 | static void ocfs2_put_super(struct super_block *sb) | |
959 | { | |
960 | mlog_entry("(0x%p)\n", sb); | |
961 | ||
962 | ocfs2_sync_blockdev(sb); | |
963 | ocfs2_dismount_volume(sb, 0); | |
964 | ||
965 | mlog_exit_void(); | |
966 | } | |
967 | ||
726c3342 | 968 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
969 | { |
970 | struct ocfs2_super *osb; | |
971 | u32 numbits, freebits; | |
972 | int status; | |
973 | struct ocfs2_dinode *bm_lock; | |
974 | struct buffer_head *bh = NULL; | |
975 | struct inode *inode = NULL; | |
976 | ||
726c3342 | 977 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 978 | |
726c3342 | 979 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
980 | |
981 | inode = ocfs2_get_system_file_inode(osb, | |
982 | GLOBAL_BITMAP_SYSTEM_INODE, | |
983 | OCFS2_INVALID_SLOT); | |
984 | if (!inode) { | |
985 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
986 | status = -EIO; | |
987 | goto bail; | |
988 | } | |
989 | ||
e63aecb6 | 990 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
991 | if (status < 0) { |
992 | mlog_errno(status); | |
993 | goto bail; | |
994 | } | |
995 | ||
996 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
997 | ||
998 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
999 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1000 | ||
1001 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1002 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1003 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1004 | buf->f_blocks = ((sector_t) numbits) * | |
1005 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1006 | buf->f_bfree = ((sector_t) freebits) * | |
1007 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1008 | buf->f_bavail = buf->f_bfree; | |
1009 | buf->f_files = numbits; | |
1010 | buf->f_ffree = freebits; | |
1011 | ||
1012 | brelse(bh); | |
1013 | ||
e63aecb6 | 1014 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1015 | status = 0; |
1016 | bail: | |
1017 | if (inode) | |
1018 | iput(inode); | |
1019 | ||
1020 | mlog_exit(status); | |
1021 | ||
1022 | return status; | |
1023 | } | |
1024 | ||
4ba9b9d0 | 1025 | static void ocfs2_inode_init_once(struct kmem_cache *cachep, void *data) |
ccd979bd MF |
1026 | { |
1027 | struct ocfs2_inode_info *oi = data; | |
1028 | ||
a35afb83 CL |
1029 | oi->ip_flags = 0; |
1030 | oi->ip_open_count = 0; | |
1031 | spin_lock_init(&oi->ip_lock); | |
1032 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1033 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
1034 | oi->ip_created_trans = 0; | |
1035 | oi->ip_last_trans = 0; | |
1036 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 1037 | |
a35afb83 CL |
1038 | init_rwsem(&oi->ip_alloc_sem); |
1039 | mutex_init(&oi->ip_io_mutex); | |
ccd979bd | 1040 | |
a35afb83 CL |
1041 | oi->ip_blkno = 0ULL; |
1042 | oi->ip_clusters = 0; | |
ccd979bd | 1043 | |
a35afb83 | 1044 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1045 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1046 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1047 | |
a35afb83 | 1048 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 1049 | |
a35afb83 | 1050 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1051 | } |
1052 | ||
1053 | static int ocfs2_initialize_mem_caches(void) | |
1054 | { | |
1055 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1056 | sizeof(struct ocfs2_inode_info), |
1057 | 0, | |
1058 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1059 | SLAB_MEM_SPREAD), | |
20c2df83 | 1060 | ocfs2_inode_init_once); |
ccd979bd MF |
1061 | if (!ocfs2_inode_cachep) |
1062 | return -ENOMEM; | |
1063 | ||
ccd979bd MF |
1064 | return 0; |
1065 | } | |
1066 | ||
1067 | static void ocfs2_free_mem_caches(void) | |
1068 | { | |
1069 | if (ocfs2_inode_cachep) | |
1070 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd MF |
1071 | |
1072 | ocfs2_inode_cachep = NULL; | |
ccd979bd MF |
1073 | } |
1074 | ||
1075 | static int ocfs2_get_sector(struct super_block *sb, | |
1076 | struct buffer_head **bh, | |
1077 | int block, | |
1078 | int sect_size) | |
1079 | { | |
1080 | if (!sb_set_blocksize(sb, sect_size)) { | |
1081 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1082 | return -EIO; | |
1083 | } | |
1084 | ||
1085 | *bh = sb_getblk(sb, block); | |
1086 | if (!*bh) { | |
1087 | mlog_errno(-EIO); | |
1088 | return -EIO; | |
1089 | } | |
1090 | lock_buffer(*bh); | |
1091 | if (!buffer_dirty(*bh)) | |
1092 | clear_buffer_uptodate(*bh); | |
1093 | unlock_buffer(*bh); | |
1094 | ll_rw_block(READ, 1, bh); | |
1095 | wait_on_buffer(*bh); | |
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | /* ocfs2 1.0 only allows one cluster and node identity per kernel image. */ | |
1100 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb) | |
1101 | { | |
1102 | int status; | |
1103 | ||
1104 | /* XXX hold a ref on the node while mounte? easy enough, if | |
1105 | * desirable. */ | |
c271c5c2 SM |
1106 | if (ocfs2_mount_local(osb)) |
1107 | osb->node_num = 0; | |
1108 | else | |
1109 | osb->node_num = o2nm_this_node(); | |
1110 | ||
ccd979bd MF |
1111 | if (osb->node_num == O2NM_MAX_NODES) { |
1112 | mlog(ML_ERROR, "could not find this host's node number\n"); | |
1113 | status = -ENOENT; | |
1114 | goto bail; | |
1115 | } | |
1116 | ||
781ee3e2 | 1117 | mlog(0, "I am node %d\n", osb->node_num); |
ccd979bd MF |
1118 | |
1119 | status = 0; | |
1120 | bail: | |
1121 | return status; | |
1122 | } | |
1123 | ||
1124 | static int ocfs2_mount_volume(struct super_block *sb) | |
1125 | { | |
1126 | int status = 0; | |
1127 | int unlock_super = 0; | |
1128 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1129 | ||
1130 | mlog_entry_void(); | |
1131 | ||
1132 | if (ocfs2_is_hard_readonly(osb)) | |
1133 | goto leave; | |
1134 | ||
1135 | status = ocfs2_fill_local_node_info(osb); | |
1136 | if (status < 0) { | |
1137 | mlog_errno(status); | |
1138 | goto leave; | |
1139 | } | |
1140 | ||
ccd979bd MF |
1141 | status = ocfs2_dlm_init(osb); |
1142 | if (status < 0) { | |
1143 | mlog_errno(status); | |
1144 | goto leave; | |
1145 | } | |
1146 | ||
ccd979bd MF |
1147 | status = ocfs2_super_lock(osb, 1); |
1148 | if (status < 0) { | |
1149 | mlog_errno(status); | |
1150 | goto leave; | |
1151 | } | |
1152 | unlock_super = 1; | |
1153 | ||
1154 | /* This will load up the node map and add ourselves to it. */ | |
1155 | status = ocfs2_find_slot(osb); | |
1156 | if (status < 0) { | |
1157 | mlog_errno(status); | |
1158 | goto leave; | |
1159 | } | |
1160 | ||
ccd979bd MF |
1161 | /* load all node-local system inodes */ |
1162 | status = ocfs2_init_local_system_inodes(osb); | |
1163 | if (status < 0) { | |
1164 | mlog_errno(status); | |
1165 | goto leave; | |
1166 | } | |
1167 | ||
1168 | status = ocfs2_check_volume(osb); | |
1169 | if (status < 0) { | |
1170 | mlog_errno(status); | |
1171 | goto leave; | |
1172 | } | |
1173 | ||
1174 | status = ocfs2_truncate_log_init(osb); | |
1175 | if (status < 0) { | |
1176 | mlog_errno(status); | |
1177 | goto leave; | |
1178 | } | |
1179 | ||
c271c5c2 SM |
1180 | if (ocfs2_mount_local(osb)) |
1181 | goto leave; | |
1182 | ||
ccd979bd MF |
1183 | leave: |
1184 | if (unlock_super) | |
1185 | ocfs2_super_unlock(osb, 1); | |
1186 | ||
1187 | mlog_exit(status); | |
1188 | return status; | |
1189 | } | |
1190 | ||
1191 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
1192 | * memory barriers to make sure that we'll see the null task before | |
1193 | * being woken up */ | |
1194 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
1195 | { | |
1196 | mb(); | |
1197 | return osb->recovery_thread_task != NULL; | |
1198 | } | |
1199 | ||
1200 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) | |
1201 | { | |
1202 | int tmp; | |
1203 | struct ocfs2_super *osb = NULL; | |
c271c5c2 | 1204 | char nodestr[8]; |
ccd979bd MF |
1205 | |
1206 | mlog_entry("(0x%p)\n", sb); | |
1207 | ||
1208 | BUG_ON(!sb); | |
1209 | osb = OCFS2_SB(sb); | |
1210 | BUG_ON(!osb); | |
1211 | ||
1212 | ocfs2_shutdown_local_alloc(osb); | |
1213 | ||
1214 | ocfs2_truncate_log_shutdown(osb); | |
1215 | ||
1216 | /* disable any new recovery threads and wait for any currently | |
1217 | * running ones to exit. Do this before setting the vol_state. */ | |
c74ec2f7 | 1218 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1219 | osb->disable_recovery = 1; |
c74ec2f7 | 1220 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1221 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); |
1222 | ||
1223 | /* At this point, we know that no more recovery threads can be | |
1224 | * launched, so wait for any recovery completion work to | |
1225 | * complete. */ | |
1226 | flush_workqueue(ocfs2_wq); | |
1227 | ||
1228 | ocfs2_journal_shutdown(osb); | |
1229 | ||
1230 | ocfs2_sync_blockdev(sb); | |
1231 | ||
1232 | /* No dlm means we've failed during mount, so skip all the | |
1233 | * steps which depended on that to complete. */ | |
1234 | if (osb->dlm) { | |
1235 | tmp = ocfs2_super_lock(osb, 1); | |
1236 | if (tmp < 0) { | |
1237 | mlog_errno(tmp); | |
1238 | return; | |
1239 | } | |
19b613d4 | 1240 | } |
ccd979bd | 1241 | |
19b613d4 MF |
1242 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1243 | ocfs2_put_slot(osb); | |
ccd979bd | 1244 | |
19b613d4 | 1245 | if (osb->dlm) |
ccd979bd | 1246 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1247 | |
1248 | ocfs2_release_system_inodes(osb); | |
1249 | ||
34d024f8 | 1250 | if (osb->dlm) |
ccd979bd | 1251 | ocfs2_dlm_shutdown(osb); |
ccd979bd | 1252 | |
ccd979bd MF |
1253 | debugfs_remove(osb->osb_debug_root); |
1254 | ||
1255 | if (!mnt_err) | |
1256 | ocfs2_stop_heartbeat(osb); | |
1257 | ||
1258 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1259 | ||
c271c5c2 SM |
1260 | if (ocfs2_mount_local(osb)) |
1261 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1262 | else | |
1263 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
1264 | ||
1265 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1266 | osb->dev_str, nodestr); | |
ccd979bd MF |
1267 | |
1268 | ocfs2_delete_osb(osb); | |
1269 | kfree(osb); | |
1270 | sb->s_dev = 0; | |
1271 | sb->s_fs_info = NULL; | |
1272 | } | |
1273 | ||
1274 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1275 | unsigned uuid_bytes) | |
1276 | { | |
1277 | int i, ret; | |
1278 | char *ptr; | |
1279 | ||
1280 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1281 | ||
cd861280 | 1282 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1283 | if (osb->uuid_str == NULL) |
1284 | return -ENOMEM; | |
1285 | ||
ccd979bd MF |
1286 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1287 | /* print with null */ | |
1288 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1289 | if (ret != 2) /* drop super cleans up */ | |
1290 | return -EINVAL; | |
1291 | /* then only advance past the last char */ | |
1292 | ptr += 2; | |
1293 | } | |
1294 | ||
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | static int ocfs2_initialize_super(struct super_block *sb, | |
1299 | struct buffer_head *bh, | |
1300 | int sector_size) | |
1301 | { | |
bddb8eb3 | 1302 | int status; |
5a254031 MF |
1303 | int i, cbits, bbits; |
1304 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 1305 | struct inode *inode = NULL; |
ccd979bd MF |
1306 | struct ocfs2_journal *journal; |
1307 | __le32 uuid_net_key; | |
1308 | struct ocfs2_super *osb; | |
1309 | ||
1310 | mlog_entry_void(); | |
1311 | ||
cd861280 | 1312 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1313 | if (!osb) { |
1314 | status = -ENOMEM; | |
1315 | mlog_errno(status); | |
1316 | goto bail; | |
1317 | } | |
1318 | ||
1319 | sb->s_fs_info = osb; | |
1320 | sb->s_op = &ocfs2_sops; | |
1321 | sb->s_export_op = &ocfs2_export_ops; | |
e0dceaf0 | 1322 | sb->s_time_gran = 1; |
ccd979bd MF |
1323 | sb->s_flags |= MS_NOATIME; |
1324 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
1325 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
1326 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1327 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd MF |
1328 | |
1329 | osb->sb = sb; | |
1330 | /* Save off for ocfs2_rw_direct */ | |
1331 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1332 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 1333 | |
ccd979bd | 1334 | init_waitqueue_head(&osb->recovery_event); |
34d024f8 MF |
1335 | spin_lock_init(&osb->dc_task_lock); |
1336 | init_waitqueue_head(&osb->dc_event); | |
1337 | osb->dc_work_sequence = 0; | |
1338 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
1339 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
1340 | osb->blocked_lock_count = 0; | |
ccd979bd MF |
1341 | spin_lock_init(&osb->osb_lock); |
1342 | ||
1343 | atomic_set(&osb->alloc_stats.moves, 0); | |
1344 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1345 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1346 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1347 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1348 | ||
1349 | ocfs2_init_node_maps(osb); | |
1350 | ||
1351 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1352 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1353 | ||
c74ec2f7 | 1354 | mutex_init(&osb->recovery_lock); |
ccd979bd MF |
1355 | |
1356 | osb->disable_recovery = 0; | |
1357 | osb->recovery_thread_task = NULL; | |
1358 | ||
1359 | init_waitqueue_head(&osb->checkpoint_event); | |
1360 | atomic_set(&osb->needs_checkpoint, 0); | |
1361 | ||
7f1a37e3 TY |
1362 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1363 | ||
ccd979bd MF |
1364 | osb->node_num = O2NM_INVALID_NODE_NUM; |
1365 | osb->slot_num = OCFS2_INVALID_SLOT; | |
1366 | ||
1367 | osb->local_alloc_state = OCFS2_LA_UNUSED; | |
1368 | osb->local_alloc_bh = NULL; | |
1369 | ||
1370 | ocfs2_setup_hb_callbacks(osb); | |
1371 | ||
1372 | init_waitqueue_head(&osb->osb_mount_event); | |
1373 | ||
1374 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
1375 | if (!osb->vol_label) { | |
1376 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
1377 | status = -ENOMEM; | |
1378 | goto bail; | |
1379 | } | |
1380 | ||
ccd979bd MF |
1381 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
1382 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
1383 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
1384 | osb->max_slots); | |
1385 | status = -EINVAL; | |
1386 | goto bail; | |
1387 | } | |
781ee3e2 | 1388 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 1389 | |
b4df6ed8 MF |
1390 | init_waitqueue_head(&osb->osb_wipe_event); |
1391 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
1392 | sizeof(*osb->osb_orphan_wipes), | |
1393 | GFP_KERNEL); | |
1394 | if (!osb->osb_orphan_wipes) { | |
1395 | status = -ENOMEM; | |
1396 | mlog_errno(status); | |
1397 | goto bail; | |
1398 | } | |
1399 | ||
ccd979bd MF |
1400 | osb->s_feature_compat = |
1401 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
1402 | osb->s_feature_ro_compat = | |
1403 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
1404 | osb->s_feature_incompat = | |
1405 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
1406 | ||
1407 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
1408 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
1409 | "optional features (%x).\n", i); | |
1410 | status = -EINVAL; | |
1411 | goto bail; | |
1412 | } | |
1413 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
1414 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
1415 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
1416 | "unsupported optional features (%x).\n", i); | |
1417 | status = -EINVAL; | |
1418 | goto bail; | |
1419 | } | |
1420 | ||
1421 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); | |
1422 | ||
1423 | /* FIXME | |
1424 | * This should be done in ocfs2_journal_init(), but unknown | |
1425 | * ordering issues will cause the filesystem to crash. | |
1426 | * If anyone wants to figure out what part of the code | |
1427 | * refers to osb->journal before ocfs2_journal_init() is run, | |
1428 | * be my guest. | |
1429 | */ | |
1430 | /* initialize our journal structure */ | |
1431 | ||
cd861280 | 1432 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
1433 | if (!journal) { |
1434 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
1435 | status = -ENOMEM; | |
1436 | goto bail; | |
1437 | } | |
1438 | osb->journal = journal; | |
1439 | journal->j_osb = osb; | |
1440 | ||
1441 | atomic_set(&journal->j_num_trans, 0); | |
1442 | init_rwsem(&journal->j_trans_barrier); | |
1443 | init_waitqueue_head(&journal->j_checkpointed); | |
1444 | spin_lock_init(&journal->j_lock); | |
1445 | journal->j_trans_id = (unsigned long) 1; | |
1446 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 1447 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
1448 | journal->j_state = OCFS2_JOURNAL_FREE; |
1449 | ||
1450 | /* get some pseudo constants for clustersize bits */ | |
1451 | osb->s_clustersize_bits = | |
1452 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
1453 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
1454 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
1455 | ||
1456 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
1457 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
1458 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
1459 | osb->s_clustersize); | |
1460 | status = -EINVAL; | |
1461 | goto bail; | |
1462 | } | |
1463 | ||
1464 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
1465 | > (u32)~0UL) { | |
1466 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
1467 | "what jbd can address in 32 bits.\n"); | |
1468 | status = -EINVAL; | |
1469 | goto bail; | |
1470 | } | |
1471 | ||
1472 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
1473 | sizeof(di->id2.i_super.s_uuid))) { | |
1474 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
1475 | status = -ENOMEM; | |
1476 | goto bail; | |
1477 | } | |
1478 | ||
78427043 | 1479 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
1480 | |
1481 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
1482 | osb->vol_label[63] = '\0'; | |
1483 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
1484 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
1485 | osb->first_cluster_group_blkno = | |
1486 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
1487 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
1488 | mlog(0, "vol_label: %s\n", osb->vol_label); | |
1489 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
1490 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
1491 | (unsigned long long)osb->root_blkno, | |
1492 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
1493 | |
1494 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
1495 | if (!osb->osb_dlm_debug) { | |
1496 | status = -ENOMEM; | |
1497 | mlog_errno(status); | |
1498 | goto bail; | |
1499 | } | |
1500 | ||
1501 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
1502 | ||
1503 | /* load root, system_dir, and all global system inodes */ | |
1504 | status = ocfs2_init_global_system_inodes(osb); | |
1505 | if (status < 0) { | |
1506 | mlog_errno(status); | |
1507 | goto bail; | |
1508 | } | |
1509 | ||
1510 | /* | |
1511 | * global bitmap | |
1512 | */ | |
1513 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
1514 | OCFS2_INVALID_SLOT); | |
1515 | if (!inode) { | |
1516 | status = -EINVAL; | |
1517 | mlog_errno(status); | |
1518 | goto bail; | |
1519 | } | |
1520 | ||
1521 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
ccd979bd | 1522 | iput(inode); |
ccd979bd | 1523 | |
e9d578a8 | 1524 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; |
ccd979bd MF |
1525 | |
1526 | status = ocfs2_init_slot_info(osb); | |
1527 | if (status < 0) { | |
1528 | mlog_errno(status); | |
1529 | goto bail; | |
1530 | } | |
1531 | ||
ccd979bd MF |
1532 | bail: |
1533 | mlog_exit(status); | |
1534 | return status; | |
1535 | } | |
1536 | ||
1537 | /* | |
1538 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
1539 | * -EINVAL if there is a bad superblock | |
1540 | * 0 on success | |
1541 | */ | |
1542 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
1543 | struct buffer_head *bh, | |
1544 | u32 blksz) | |
1545 | { | |
1546 | int status = -EAGAIN; | |
1547 | ||
1548 | mlog_entry_void(); | |
1549 | ||
1550 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
1551 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
1552 | status = -EINVAL; | |
1553 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
1554 | mlog(ML_ERROR, "found superblock with incorrect block " | |
1555 | "size: found %u, should be %u\n", | |
1556 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
1557 | blksz); | |
1558 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
1559 | OCFS2_MAJOR_REV_LEVEL || | |
1560 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
1561 | OCFS2_MINOR_REV_LEVEL) { | |
1562 | mlog(ML_ERROR, "found superblock with bad version: " | |
1563 | "found %u.%u, should be %u.%u\n", | |
1564 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
1565 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
1566 | OCFS2_MAJOR_REV_LEVEL, | |
1567 | OCFS2_MINOR_REV_LEVEL); | |
1568 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
1569 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 1570 | "found %llu, should be %llu\n", |
1ca1a111 | 1571 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 1572 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
1573 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
1574 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
1575 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
1576 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
1577 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
1578 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
1579 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
1580 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
1581 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
1582 | mlog(ML_ERROR, | |
1583 | "Superblock slots found greater than file system " | |
1584 | "maximum: found %u, max %u\n", | |
1585 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
1586 | OCFS2_MAX_SLOTS); | |
1587 | } else { | |
1588 | /* found it! */ | |
1589 | status = 0; | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | mlog_exit(status); | |
1594 | return status; | |
1595 | } | |
1596 | ||
1597 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
1598 | { | |
bddb8eb3 | 1599 | int status; |
ccd979bd | 1600 | int dirty; |
c271c5c2 | 1601 | int local; |
ccd979bd MF |
1602 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
1603 | * recover | |
1604 | * ourselves. */ | |
1605 | ||
1606 | mlog_entry_void(); | |
1607 | ||
1608 | /* Init our journal object. */ | |
1609 | status = ocfs2_journal_init(osb->journal, &dirty); | |
1610 | if (status < 0) { | |
1611 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
1612 | goto finally; | |
1613 | } | |
1614 | ||
1615 | /* If the journal was unmounted cleanly then we don't want to | |
1616 | * recover anything. Otherwise, journal_load will do that | |
1617 | * dirty work for us :) */ | |
1618 | if (!dirty) { | |
1619 | status = ocfs2_journal_wipe(osb->journal, 0); | |
1620 | if (status < 0) { | |
1621 | mlog_errno(status); | |
1622 | goto finally; | |
1623 | } | |
1624 | } else { | |
1625 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
1626 | "recovering volume.\n"); | |
1627 | } | |
1628 | ||
c271c5c2 SM |
1629 | local = ocfs2_mount_local(osb); |
1630 | ||
ccd979bd | 1631 | /* will play back anything left in the journal. */ |
c271c5c2 | 1632 | ocfs2_journal_load(osb->journal, local); |
ccd979bd MF |
1633 | |
1634 | if (dirty) { | |
1635 | /* recover my local alloc if we didn't unmount cleanly. */ | |
1636 | status = ocfs2_begin_local_alloc_recovery(osb, | |
1637 | osb->slot_num, | |
1638 | &local_alloc); | |
1639 | if (status < 0) { | |
1640 | mlog_errno(status); | |
1641 | goto finally; | |
1642 | } | |
1643 | /* we complete the recovery process after we've marked | |
1644 | * ourselves as mounted. */ | |
1645 | } | |
1646 | ||
1647 | mlog(0, "Journal loaded.\n"); | |
1648 | ||
1649 | status = ocfs2_load_local_alloc(osb); | |
1650 | if (status < 0) { | |
1651 | mlog_errno(status); | |
1652 | goto finally; | |
1653 | } | |
1654 | ||
1655 | if (dirty) { | |
1656 | /* Recovery will be completed after we've mounted the | |
1657 | * rest of the volume. */ | |
1658 | osb->dirty = 1; | |
1659 | osb->local_alloc_copy = local_alloc; | |
1660 | local_alloc = NULL; | |
1661 | } | |
1662 | ||
1663 | /* go through each journal, trylock it and if you get the | |
1664 | * lock, and it's marked as dirty, set the bit in the recover | |
1665 | * map and launch a recovery thread for it. */ | |
1666 | status = ocfs2_mark_dead_nodes(osb); | |
1667 | if (status < 0) | |
1668 | mlog_errno(status); | |
1669 | ||
1670 | finally: | |
1671 | if (local_alloc) | |
1672 | kfree(local_alloc); | |
1673 | ||
1674 | mlog_exit(status); | |
1675 | return status; | |
1676 | } | |
1677 | ||
1678 | /* | |
1679 | * The routine gets called from dismount or close whenever a dismount on | |
1680 | * volume is requested and the osb open count becomes 1. | |
1681 | * It will remove the osb from the global list and also free up all the | |
1682 | * initialized resources and fileobject. | |
1683 | */ | |
1684 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
1685 | { | |
1686 | mlog_entry_void(); | |
1687 | ||
1688 | /* This function assumes that the caller has the main osb resource */ | |
1689 | ||
1690 | if (osb->slot_info) | |
1691 | ocfs2_free_slot_info(osb->slot_info); | |
1692 | ||
b4df6ed8 | 1693 | kfree(osb->osb_orphan_wipes); |
ccd979bd MF |
1694 | /* FIXME |
1695 | * This belongs in journal shutdown, but because we have to | |
1696 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
1697 | * we free it here. | |
1698 | */ | |
1699 | kfree(osb->journal); | |
1700 | if (osb->local_alloc_copy) | |
1701 | kfree(osb->local_alloc_copy); | |
1702 | kfree(osb->uuid_str); | |
1703 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
1704 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
1705 | ||
1706 | mlog_exit_void(); | |
1707 | } | |
1708 | ||
1709 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
1710 | * panic(). We do not support continue-on-error operation. */ | |
1711 | static void ocfs2_handle_error(struct super_block *sb) | |
1712 | { | |
1713 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1714 | ||
1715 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
1716 | panic("OCFS2: (device %s): panic forced after error\n", | |
1717 | sb->s_id); | |
1718 | ||
1719 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
1720 | ||
1721 | if (sb->s_flags & MS_RDONLY && | |
1722 | (ocfs2_is_soft_readonly(osb) || | |
1723 | ocfs2_is_hard_readonly(osb))) | |
1724 | return; | |
1725 | ||
1726 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
1727 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
1728 | "system is unmounted.\n"); | |
1729 | sb->s_flags |= MS_RDONLY; | |
1730 | ocfs2_set_ro_flag(osb, 0); | |
1731 | } | |
1732 | ||
1733 | static char error_buf[1024]; | |
1734 | ||
1735 | void __ocfs2_error(struct super_block *sb, | |
1736 | const char *function, | |
1737 | const char *fmt, ...) | |
1738 | { | |
1739 | va_list args; | |
1740 | ||
1741 | va_start(args, fmt); | |
4a6e617a | 1742 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1743 | va_end(args); |
1744 | ||
1745 | /* Not using mlog here because we want to show the actual | |
1746 | * function the error came from. */ | |
1747 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
1748 | sb->s_id, function, error_buf); | |
1749 | ||
1750 | ocfs2_handle_error(sb); | |
1751 | } | |
1752 | ||
1753 | /* Handle critical errors. This is intentionally more drastic than | |
1754 | * ocfs2_handle_error, so we only use for things like journal errors, | |
1755 | * etc. */ | |
1756 | void __ocfs2_abort(struct super_block* sb, | |
1757 | const char *function, | |
1758 | const char *fmt, ...) | |
1759 | { | |
1760 | va_list args; | |
1761 | ||
1762 | va_start(args, fmt); | |
4a6e617a | 1763 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1764 | va_end(args); |
1765 | ||
1766 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
1767 | sb->s_id, function, error_buf); | |
1768 | ||
1769 | /* We don't have the cluster support yet to go straight to | |
1770 | * hard readonly in here. Until then, we want to keep | |
1771 | * ocfs2_abort() so that we can at least mark critical | |
1772 | * errors. | |
1773 | * | |
1774 | * TODO: This should abort the journal and alert other nodes | |
1775 | * that our slot needs recovery. */ | |
1776 | ||
1777 | /* Force a panic(). This stinks, but it's better than letting | |
1778 | * things continue without having a proper hard readonly | |
1779 | * here. */ | |
1780 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
1781 | ocfs2_handle_error(sb); | |
1782 | } | |
1783 | ||
1784 | module_init(ocfs2_init); | |
1785 | module_exit(ocfs2_exit); |