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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; | |
2fbe8d1e | 90 | unsigned int localalloc_opt; |
c0123ade TY |
91 | }; |
92 | ||
ccd979bd | 93 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 94 | struct mount_options *mopt, |
baf4661a | 95 | int is_remount); |
d550071c | 96 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); |
ccd979bd MF |
97 | static void ocfs2_put_super(struct super_block *sb); |
98 | static int ocfs2_mount_volume(struct super_block *sb); | |
99 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
100 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
101 | static int ocfs2_initialize_mem_caches(void); | |
102 | static void ocfs2_free_mem_caches(void); | |
103 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
104 | ||
726c3342 | 105 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
106 | |
107 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
108 | ||
109 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
110 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
bddb8eb3 | 111 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
ccd979bd MF |
112 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb); |
113 | static int ocfs2_check_volume(struct ocfs2_super *osb); | |
114 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
115 | struct buffer_head *bh, | |
116 | u32 sectsize); | |
117 | static int ocfs2_initialize_super(struct super_block *sb, | |
118 | struct buffer_head *bh, | |
119 | int sector_size); | |
120 | static int ocfs2_get_sector(struct super_block *sb, | |
121 | struct buffer_head **bh, | |
122 | int block, | |
123 | int sect_size); | |
124 | static void ocfs2_write_super(struct super_block *sb); | |
125 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
126 | static void ocfs2_destroy_inode(struct inode *inode); | |
127 | ||
ee9b6d61 | 128 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
129 | .statfs = ocfs2_statfs, |
130 | .alloc_inode = ocfs2_alloc_inode, | |
131 | .destroy_inode = ocfs2_destroy_inode, | |
132 | .drop_inode = ocfs2_drop_inode, | |
133 | .clear_inode = ocfs2_clear_inode, | |
134 | .delete_inode = ocfs2_delete_inode, | |
135 | .sync_fs = ocfs2_sync_fs, | |
136 | .write_super = ocfs2_write_super, | |
137 | .put_super = ocfs2_put_super, | |
138 | .remount_fs = ocfs2_remount, | |
d550071c | 139 | .show_options = ocfs2_show_options, |
ccd979bd MF |
140 | }; |
141 | ||
142 | enum { | |
143 | Opt_barrier, | |
144 | Opt_err_panic, | |
145 | Opt_err_ro, | |
146 | Opt_intr, | |
147 | Opt_nointr, | |
148 | Opt_hb_none, | |
149 | Opt_hb_local, | |
150 | Opt_data_ordered, | |
151 | Opt_data_writeback, | |
7f1a37e3 | 152 | Opt_atime_quantum, |
baf4661a | 153 | Opt_slot, |
d147b3d6 | 154 | Opt_commit, |
2fbe8d1e | 155 | Opt_localalloc, |
ccd979bd MF |
156 | Opt_err, |
157 | }; | |
158 | ||
159 | static match_table_t tokens = { | |
160 | {Opt_barrier, "barrier=%u"}, | |
161 | {Opt_err_panic, "errors=panic"}, | |
162 | {Opt_err_ro, "errors=remount-ro"}, | |
163 | {Opt_intr, "intr"}, | |
164 | {Opt_nointr, "nointr"}, | |
165 | {Opt_hb_none, OCFS2_HB_NONE}, | |
166 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
167 | {Opt_data_ordered, "data=ordered"}, | |
168 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 169 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 170 | {Opt_slot, "preferred_slot=%u"}, |
d147b3d6 | 171 | {Opt_commit, "commit=%u"}, |
2fbe8d1e | 172 | {Opt_localalloc, "localalloc=%d"}, |
ccd979bd MF |
173 | {Opt_err, NULL} |
174 | }; | |
175 | ||
176 | /* | |
177 | * write_super and sync_fs ripped right out of ext3. | |
178 | */ | |
179 | static void ocfs2_write_super(struct super_block *sb) | |
180 | { | |
7892f2f4 | 181 | if (mutex_trylock(&sb->s_lock) != 0) |
ccd979bd MF |
182 | BUG(); |
183 | sb->s_dirt = 0; | |
184 | } | |
185 | ||
186 | static int ocfs2_sync_fs(struct super_block *sb, int wait) | |
187 | { | |
bddb8eb3 | 188 | int status; |
ccd979bd MF |
189 | tid_t target; |
190 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
191 | ||
192 | sb->s_dirt = 0; | |
193 | ||
194 | if (ocfs2_is_hard_readonly(osb)) | |
195 | return -EROFS; | |
196 | ||
197 | if (wait) { | |
198 | status = ocfs2_flush_truncate_log(osb); | |
199 | if (status < 0) | |
200 | mlog_errno(status); | |
201 | } else { | |
202 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
203 | } | |
204 | ||
205 | if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { | |
206 | if (wait) | |
207 | log_wait_commit(OCFS2_SB(sb)->journal->j_journal, | |
208 | target); | |
209 | } | |
210 | return 0; | |
211 | } | |
212 | ||
213 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) | |
214 | { | |
215 | struct inode *new = NULL; | |
216 | int status = 0; | |
217 | int i; | |
218 | ||
219 | mlog_entry_void(); | |
220 | ||
24c19ef4 | 221 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE); |
ccd979bd MF |
222 | if (IS_ERR(new)) { |
223 | status = PTR_ERR(new); | |
224 | mlog_errno(status); | |
225 | goto bail; | |
226 | } | |
227 | osb->root_inode = new; | |
228 | ||
24c19ef4 | 229 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE); |
ccd979bd MF |
230 | if (IS_ERR(new)) { |
231 | status = PTR_ERR(new); | |
232 | mlog_errno(status); | |
233 | goto bail; | |
234 | } | |
235 | osb->sys_root_inode = new; | |
236 | ||
237 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
238 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
239 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
240 | if (!new) { | |
241 | ocfs2_release_system_inodes(osb); | |
242 | status = -EINVAL; | |
243 | mlog_errno(status); | |
244 | /* FIXME: Should ERROR_RO_FS */ | |
245 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
246 | "possibly corrupt fs?", i); | |
247 | goto bail; | |
248 | } | |
249 | // the array now has one ref, so drop this one | |
250 | iput(new); | |
251 | } | |
252 | ||
253 | bail: | |
254 | mlog_exit(status); | |
255 | return status; | |
256 | } | |
257 | ||
258 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
259 | { | |
260 | struct inode *new = NULL; | |
261 | int status = 0; | |
262 | int i; | |
263 | ||
264 | mlog_entry_void(); | |
265 | ||
266 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
267 | i < NUM_SYSTEM_INODES; | |
268 | i++) { | |
269 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
270 | if (!new) { | |
271 | ocfs2_release_system_inodes(osb); | |
272 | status = -EINVAL; | |
273 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
274 | status, i, osb->slot_num); | |
275 | goto bail; | |
276 | } | |
277 | /* the array now has one ref, so drop this one */ | |
278 | iput(new); | |
279 | } | |
280 | ||
281 | bail: | |
282 | mlog_exit(status); | |
283 | return status; | |
284 | } | |
285 | ||
bddb8eb3 | 286 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 287 | { |
bddb8eb3 | 288 | int i; |
ccd979bd MF |
289 | struct inode *inode; |
290 | ||
291 | mlog_entry_void(); | |
292 | ||
293 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
294 | inode = osb->system_inodes[i]; | |
295 | if (inode) { | |
296 | iput(inode); | |
297 | osb->system_inodes[i] = NULL; | |
298 | } | |
299 | } | |
300 | ||
301 | inode = osb->sys_root_inode; | |
302 | if (inode) { | |
303 | iput(inode); | |
304 | osb->sys_root_inode = NULL; | |
305 | } | |
306 | ||
307 | inode = osb->root_inode; | |
308 | if (inode) { | |
309 | iput(inode); | |
310 | osb->root_inode = NULL; | |
311 | } | |
312 | ||
bddb8eb3 | 313 | mlog_exit(0); |
ccd979bd MF |
314 | } |
315 | ||
316 | /* We're allocating fs objects, use GFP_NOFS */ | |
317 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
318 | { | |
319 | struct ocfs2_inode_info *oi; | |
320 | ||
e6b4f8da | 321 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
322 | if (!oi) |
323 | return NULL; | |
324 | ||
325 | return &oi->vfs_inode; | |
326 | } | |
327 | ||
328 | static void ocfs2_destroy_inode(struct inode *inode) | |
329 | { | |
330 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
331 | } | |
332 | ||
5a254031 MF |
333 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
334 | unsigned int cbits) | |
ccd979bd | 335 | { |
5a254031 MF |
336 | unsigned int bytes = 1 << cbits; |
337 | unsigned int trim = bytes; | |
338 | unsigned int bitshift = 32; | |
339 | ||
340 | /* | |
341 | * i_size and all block offsets in ocfs2 are always 64 bits | |
342 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
343 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
344 | */ |
345 | ||
346 | #if BITS_PER_LONG == 32 | |
347 | # if defined(CONFIG_LBD) | |
2ecd05ae | 348 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
349 | /* |
350 | * We might be limited by page cache size. | |
351 | */ | |
352 | if (bytes > PAGE_CACHE_SIZE) { | |
353 | bytes = PAGE_CACHE_SIZE; | |
354 | trim = 1; | |
355 | /* | |
356 | * Shift by 31 here so that we don't get larger than | |
357 | * MAX_LFS_FILESIZE | |
358 | */ | |
359 | bitshift = 31; | |
360 | } | |
ccd979bd | 361 | # else |
5a254031 MF |
362 | /* |
363 | * We are limited by the size of sector_t. Use block size, as | |
364 | * that's what we expose to the VFS. | |
365 | */ | |
366 | bytes = 1 << bbits; | |
367 | trim = 1; | |
368 | bitshift = 31; | |
ccd979bd MF |
369 | # endif |
370 | #endif | |
371 | ||
5a254031 MF |
372 | /* |
373 | * Trim by a whole cluster when we can actually approach the | |
374 | * on-disk limits. Otherwise we can overflow i_clusters when | |
375 | * an extent start is at the max offset. | |
376 | */ | |
377 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
378 | } |
379 | ||
380 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
381 | { | |
382 | int incompat_features; | |
383 | int ret = 0; | |
c0123ade | 384 | struct mount_options parsed_options; |
ccd979bd MF |
385 | struct ocfs2_super *osb = OCFS2_SB(sb); |
386 | ||
c0123ade | 387 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { |
ccd979bd MF |
388 | ret = -EINVAL; |
389 | goto out; | |
390 | } | |
391 | ||
392 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
c0123ade | 393 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
ccd979bd MF |
394 | ret = -EINVAL; |
395 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
396 | goto out; | |
397 | } | |
398 | ||
399 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 400 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
401 | ret = -EINVAL; |
402 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
403 | goto out; | |
404 | } | |
405 | ||
406 | /* We're going to/from readonly mode. */ | |
407 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
408 | /* Lock here so the check of HARD_RO and the potential | |
409 | * setting of SOFT_RO is atomic. */ | |
410 | spin_lock(&osb->osb_lock); | |
411 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
412 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
413 | ret = -EROFS; | |
414 | goto unlock_osb; | |
415 | } | |
416 | ||
417 | if (*flags & MS_RDONLY) { | |
418 | mlog(0, "Going to ro mode.\n"); | |
419 | sb->s_flags |= MS_RDONLY; | |
420 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
421 | } else { | |
422 | mlog(0, "Making ro filesystem writeable.\n"); | |
423 | ||
424 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
425 | mlog(ML_ERROR, "Cannot remount RDWR " | |
426 | "filesystem due to previous errors.\n"); | |
427 | ret = -EROFS; | |
428 | goto unlock_osb; | |
429 | } | |
430 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
431 | if (incompat_features) { | |
432 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
433 | "of unsupported optional features " | |
434 | "(%x).\n", incompat_features); | |
435 | ret = -EINVAL; | |
436 | goto unlock_osb; | |
437 | } | |
438 | sb->s_flags &= ~MS_RDONLY; | |
439 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
440 | } | |
441 | unlock_osb: | |
442 | spin_unlock(&osb->osb_lock); | |
443 | } | |
444 | ||
445 | if (!ret) { | |
ccd979bd MF |
446 | /* Only save off the new mount options in case of a successful |
447 | * remount. */ | |
c0123ade TY |
448 | osb->s_mount_opt = parsed_options.mount_opt; |
449 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
450 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
451 | if (parsed_options.commit_interval) |
452 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
453 | |
454 | if (!ocfs2_is_hard_readonly(osb)) | |
455 | ocfs2_set_journal_params(osb); | |
ccd979bd MF |
456 | } |
457 | out: | |
458 | return ret; | |
459 | } | |
460 | ||
461 | static int ocfs2_sb_probe(struct super_block *sb, | |
462 | struct buffer_head **bh, | |
463 | int *sector_size) | |
464 | { | |
bddb8eb3 | 465 | int status, tmpstat; |
ccd979bd MF |
466 | struct ocfs1_vol_disk_hdr *hdr; |
467 | struct ocfs2_dinode *di; | |
468 | int blksize; | |
469 | ||
470 | *bh = NULL; | |
471 | ||
472 | /* may be > 512 */ | |
473 | *sector_size = bdev_hardsect_size(sb->s_bdev); | |
474 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { | |
475 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
476 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
477 | status = -EINVAL; | |
478 | goto bail; | |
479 | } | |
480 | ||
481 | /* Can this really happen? */ | |
482 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
483 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
484 | ||
485 | /* check block zero for old format */ | |
486 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
487 | if (status < 0) { | |
488 | mlog_errno(status); | |
489 | goto bail; | |
490 | } | |
491 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
492 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
493 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
494 | hdr->major_version, hdr->minor_version); | |
495 | status = -EINVAL; | |
496 | } | |
497 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
498 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
499 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
500 | hdr->signature); | |
501 | status = -EINVAL; | |
502 | } | |
503 | brelse(*bh); | |
504 | *bh = NULL; | |
505 | if (status < 0) { | |
506 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
507 | "upgraded before mounting with ocfs v2\n"); | |
508 | goto bail; | |
509 | } | |
510 | ||
511 | /* | |
512 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
513 | * blocksizes. 4096 is the maximum blocksize because it is | |
514 | * the minimum clustersize. | |
515 | */ | |
516 | status = -EINVAL; | |
517 | for (blksize = *sector_size; | |
518 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
519 | blksize <<= 1) { | |
520 | tmpstat = ocfs2_get_sector(sb, bh, | |
521 | OCFS2_SUPER_BLOCK_BLKNO, | |
522 | blksize); | |
523 | if (tmpstat < 0) { | |
524 | status = tmpstat; | |
525 | mlog_errno(status); | |
526 | goto bail; | |
527 | } | |
528 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
529 | status = ocfs2_verify_volume(di, *bh, blksize); | |
530 | if (status >= 0) | |
531 | goto bail; | |
532 | brelse(*bh); | |
533 | *bh = NULL; | |
534 | if (status != -EAGAIN) | |
535 | break; | |
536 | } | |
537 | ||
538 | bail: | |
539 | return status; | |
540 | } | |
541 | ||
c271c5c2 SM |
542 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
543 | { | |
544 | if (ocfs2_mount_local(osb)) { | |
545 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
546 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
547 | "mounted device.\n"); | |
548 | return -EINVAL; | |
549 | } | |
550 | } | |
551 | ||
552 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { | |
553 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb)) { | |
554 | mlog(ML_ERROR, "Heartbeat has to be started to mount " | |
555 | "a read-write clustered device.\n"); | |
556 | return -EINVAL; | |
557 | } | |
558 | } | |
559 | ||
560 | return 0; | |
561 | } | |
562 | ||
ccd979bd MF |
563 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
564 | { | |
565 | struct dentry *root; | |
566 | int status, sector_size; | |
c0123ade | 567 | struct mount_options parsed_options; |
ccd979bd MF |
568 | struct inode *inode = NULL; |
569 | struct ocfs2_super *osb = NULL; | |
570 | struct buffer_head *bh = NULL; | |
c271c5c2 | 571 | char nodestr[8]; |
ccd979bd MF |
572 | |
573 | mlog_entry("%p, %p, %i", sb, data, silent); | |
574 | ||
c0123ade | 575 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
576 | status = -EINVAL; |
577 | goto read_super_error; | |
578 | } | |
579 | ||
c271c5c2 SM |
580 | /* for now we only have one cluster/node, make sure we see it |
581 | * in the heartbeat universe */ | |
c0123ade | 582 | if (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL) { |
c271c5c2 SM |
583 | if (!o2hb_check_local_node_heartbeating()) { |
584 | status = -EINVAL; | |
585 | goto read_super_error; | |
586 | } | |
587 | } | |
588 | ||
ccd979bd MF |
589 | /* probe for superblock */ |
590 | status = ocfs2_sb_probe(sb, &bh, §or_size); | |
591 | if (status < 0) { | |
592 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
593 | goto read_super_error; | |
594 | } | |
595 | ||
596 | status = ocfs2_initialize_super(sb, bh, sector_size); | |
597 | osb = OCFS2_SB(sb); | |
598 | if (status < 0) { | |
599 | mlog_errno(status); | |
600 | goto read_super_error; | |
601 | } | |
602 | brelse(bh); | |
603 | bh = NULL; | |
c0123ade TY |
604 | osb->s_mount_opt = parsed_options.mount_opt; |
605 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
606 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 607 | osb->osb_commit_interval = parsed_options.commit_interval; |
2fbe8d1e | 608 | osb->local_alloc_size = parsed_options.localalloc_opt; |
ccd979bd MF |
609 | |
610 | sb->s_magic = OCFS2_SUPER_MAGIC; | |
611 | ||
612 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, | |
613 | * heartbeat=none */ | |
614 | if (bdev_read_only(sb->s_bdev)) { | |
615 | if (!(sb->s_flags & MS_RDONLY)) { | |
616 | status = -EACCES; | |
617 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
618 | "mount was not specified.\n"); | |
619 | goto read_super_error; | |
620 | } | |
621 | ||
622 | /* You should not be able to start a local heartbeat | |
623 | * on a readonly device. */ | |
624 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
625 | status = -EROFS; | |
626 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
627 | "device.\n"); | |
628 | goto read_super_error; | |
629 | } | |
630 | ||
631 | status = ocfs2_check_journals_nolocks(osb); | |
632 | if (status < 0) { | |
633 | if (status == -EROFS) | |
634 | mlog(ML_ERROR, "Recovery required on readonly " | |
635 | "file system, but write access is " | |
636 | "unavailable.\n"); | |
637 | else | |
638 | mlog_errno(status); | |
639 | goto read_super_error; | |
640 | } | |
641 | ||
642 | ocfs2_set_ro_flag(osb, 1); | |
643 | ||
644 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
645 | "services will be utilized for this mount. Recovery " | |
646 | "will be skipped.\n"); | |
647 | } | |
648 | ||
649 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
650 | if (sb->s_flags & MS_RDONLY) |
651 | ocfs2_set_ro_flag(osb, 0); | |
652 | } | |
653 | ||
c271c5c2 SM |
654 | status = ocfs2_verify_heartbeat(osb); |
655 | if (status < 0) { | |
656 | mlog_errno(status); | |
657 | goto read_super_error; | |
658 | } | |
659 | ||
ccd979bd MF |
660 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
661 | ocfs2_debugfs_root); | |
662 | if (!osb->osb_debug_root) { | |
663 | status = -EINVAL; | |
664 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
665 | goto read_super_error; | |
666 | } | |
667 | ||
668 | status = ocfs2_mount_volume(sb); | |
669 | if (osb->root_inode) | |
670 | inode = igrab(osb->root_inode); | |
671 | ||
672 | if (status < 0) | |
673 | goto read_super_error; | |
674 | ||
675 | if (!inode) { | |
676 | status = -EIO; | |
677 | mlog_errno(status); | |
678 | goto read_super_error; | |
679 | } | |
680 | ||
681 | root = d_alloc_root(inode); | |
682 | if (!root) { | |
683 | status = -ENOMEM; | |
684 | mlog_errno(status); | |
685 | goto read_super_error; | |
686 | } | |
687 | ||
688 | sb->s_root = root; | |
689 | ||
690 | ocfs2_complete_mount_recovery(osb); | |
691 | ||
c271c5c2 SM |
692 | if (ocfs2_mount_local(osb)) |
693 | snprintf(nodestr, sizeof(nodestr), "local"); | |
694 | else | |
695 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
696 | ||
697 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 698 | "with %s data mode.\n", |
c271c5c2 | 699 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
700 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
701 | "ordered"); | |
702 | ||
703 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
704 | wake_up(&osb->osb_mount_event); | |
705 | ||
706 | mlog_exit(status); | |
707 | return status; | |
708 | ||
709 | read_super_error: | |
710 | if (bh != NULL) | |
711 | brelse(bh); | |
712 | ||
713 | if (inode) | |
714 | iput(inode); | |
715 | ||
716 | if (osb) { | |
717 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
718 | wake_up(&osb->osb_mount_event); | |
719 | ocfs2_dismount_volume(sb, 1); | |
720 | } | |
721 | ||
722 | mlog_exit(status); | |
723 | return status; | |
724 | } | |
725 | ||
454e2398 DH |
726 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
727 | int flags, | |
728 | const char *dev_name, | |
729 | void *data, | |
730 | struct vfsmount *mnt) | |
ccd979bd | 731 | { |
454e2398 DH |
732 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
733 | mnt); | |
ccd979bd MF |
734 | } |
735 | ||
736 | static struct file_system_type ocfs2_fs_type = { | |
737 | .owner = THIS_MODULE, | |
738 | .name = "ocfs2", | |
739 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
740 | * the fs? */ | |
741 | .kill_sb = kill_block_super, /* set to the generic one | |
742 | * right now, but do we | |
743 | * need to change that? */ | |
1ba9da2f | 744 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
745 | .next = NULL |
746 | }; | |
747 | ||
748 | static int ocfs2_parse_options(struct super_block *sb, | |
749 | char *options, | |
c0123ade | 750 | struct mount_options *mopt, |
ccd979bd MF |
751 | int is_remount) |
752 | { | |
753 | int status; | |
754 | char *p; | |
755 | ||
756 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
757 | options ? options : "(none)"); | |
758 | ||
d147b3d6 | 759 | mopt->commit_interval = 0; |
c0123ade TY |
760 | mopt->mount_opt = 0; |
761 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
762 | mopt->slot = OCFS2_INVALID_SLOT; | |
2fbe8d1e | 763 | mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; |
ccd979bd MF |
764 | |
765 | if (!options) { | |
766 | status = 1; | |
767 | goto bail; | |
768 | } | |
769 | ||
770 | while ((p = strsep(&options, ",")) != NULL) { | |
771 | int token, option; | |
772 | substring_t args[MAX_OPT_ARGS]; | |
773 | ||
774 | if (!*p) | |
775 | continue; | |
776 | ||
777 | token = match_token(p, tokens, args); | |
778 | switch (token) { | |
779 | case Opt_hb_local: | |
c0123ade | 780 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
781 | break; |
782 | case Opt_hb_none: | |
c0123ade | 783 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
784 | break; |
785 | case Opt_barrier: | |
786 | if (match_int(&args[0], &option)) { | |
787 | status = 0; | |
788 | goto bail; | |
789 | } | |
790 | if (option) | |
c0123ade | 791 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 792 | else |
c0123ade | 793 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
794 | break; |
795 | case Opt_intr: | |
c0123ade | 796 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
797 | break; |
798 | case Opt_nointr: | |
c0123ade | 799 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
800 | break; |
801 | case Opt_err_panic: | |
c0123ade | 802 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
803 | break; |
804 | case Opt_err_ro: | |
c0123ade | 805 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
806 | break; |
807 | case Opt_data_ordered: | |
c0123ade | 808 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
809 | break; |
810 | case Opt_data_writeback: | |
c0123ade | 811 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 812 | break; |
7f1a37e3 TY |
813 | case Opt_atime_quantum: |
814 | if (match_int(&args[0], &option)) { | |
815 | status = 0; | |
816 | goto bail; | |
817 | } | |
818 | if (option >= 0) | |
c0123ade | 819 | mopt->atime_quantum = option; |
7f1a37e3 | 820 | break; |
baf4661a SM |
821 | case Opt_slot: |
822 | option = 0; | |
823 | if (match_int(&args[0], &option)) { | |
824 | status = 0; | |
825 | goto bail; | |
826 | } | |
827 | if (option) | |
c0123ade | 828 | mopt->slot = (s16)option; |
baf4661a | 829 | break; |
d147b3d6 MF |
830 | case Opt_commit: |
831 | option = 0; | |
832 | if (match_int(&args[0], &option)) { | |
833 | status = 0; | |
834 | goto bail; | |
835 | } | |
836 | if (option < 0) | |
837 | return 0; | |
838 | if (option == 0) | |
839 | option = JBD_DEFAULT_MAX_COMMIT_AGE; | |
840 | mopt->commit_interval = HZ * option; | |
841 | break; | |
2fbe8d1e SM |
842 | case Opt_localalloc: |
843 | option = 0; | |
844 | if (match_int(&args[0], &option)) { | |
845 | status = 0; | |
846 | goto bail; | |
847 | } | |
848 | if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) | |
849 | mopt->localalloc_opt = option; | |
850 | break; | |
ccd979bd MF |
851 | default: |
852 | mlog(ML_ERROR, | |
853 | "Unrecognized mount option \"%s\" " | |
854 | "or missing value\n", p); | |
855 | status = 0; | |
856 | goto bail; | |
857 | } | |
858 | } | |
859 | ||
860 | status = 1; | |
861 | ||
862 | bail: | |
863 | mlog_exit(status); | |
864 | return status; | |
865 | } | |
866 | ||
d550071c SM |
867 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) |
868 | { | |
869 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
870 | unsigned long opts = osb->s_mount_opt; | |
871 | ||
872 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
873 | seq_printf(s, ",_netdev,heartbeat=local"); | |
874 | else | |
875 | seq_printf(s, ",heartbeat=none"); | |
876 | ||
877 | if (opts & OCFS2_MOUNT_NOINTR) | |
878 | seq_printf(s, ",nointr"); | |
879 | ||
880 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
881 | seq_printf(s, ",data=writeback"); | |
882 | else | |
883 | seq_printf(s, ",data=ordered"); | |
884 | ||
885 | if (opts & OCFS2_MOUNT_BARRIER) | |
886 | seq_printf(s, ",barrier=1"); | |
887 | ||
888 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
889 | seq_printf(s, ",errors=panic"); | |
890 | else | |
891 | seq_printf(s, ",errors=remount-ro"); | |
892 | ||
893 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
894 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
895 | ||
896 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
897 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
898 | ||
d147b3d6 MF |
899 | if (osb->osb_commit_interval) |
900 | seq_printf(s, ",commit=%u", | |
901 | (unsigned) (osb->osb_commit_interval / HZ)); | |
902 | ||
2fbe8d1e SM |
903 | if (osb->local_alloc_size != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) |
904 | seq_printf(s, ",localalloc=%d", osb->local_alloc_size); | |
905 | ||
d550071c SM |
906 | return 0; |
907 | } | |
908 | ||
ccd979bd MF |
909 | static int __init ocfs2_init(void) |
910 | { | |
911 | int status; | |
912 | ||
913 | mlog_entry_void(); | |
914 | ||
915 | ocfs2_print_version(); | |
916 | ||
ccd979bd MF |
917 | status = init_ocfs2_uptodate_cache(); |
918 | if (status < 0) { | |
919 | mlog_errno(status); | |
920 | goto leave; | |
921 | } | |
922 | ||
923 | status = ocfs2_initialize_mem_caches(); | |
924 | if (status < 0) { | |
925 | mlog_errno(status); | |
926 | goto leave; | |
927 | } | |
928 | ||
929 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
930 | if (!ocfs2_wq) { | |
931 | status = -ENOMEM; | |
932 | goto leave; | |
933 | } | |
934 | ||
ccd979bd MF |
935 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
936 | if (!ocfs2_debugfs_root) { | |
937 | status = -EFAULT; | |
938 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
939 | } | |
940 | ||
941 | leave: | |
942 | if (status < 0) { | |
943 | ocfs2_free_mem_caches(); | |
944 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
945 | } |
946 | ||
947 | mlog_exit(status); | |
948 | ||
949 | if (status >= 0) { | |
950 | return register_filesystem(&ocfs2_fs_type); | |
951 | } else | |
952 | return -1; | |
953 | } | |
954 | ||
955 | static void __exit ocfs2_exit(void) | |
956 | { | |
957 | mlog_entry_void(); | |
958 | ||
959 | if (ocfs2_wq) { | |
960 | flush_workqueue(ocfs2_wq); | |
961 | destroy_workqueue(ocfs2_wq); | |
962 | } | |
963 | ||
964 | debugfs_remove(ocfs2_debugfs_root); | |
965 | ||
966 | ocfs2_free_mem_caches(); | |
967 | ||
968 | unregister_filesystem(&ocfs2_fs_type); | |
969 | ||
ccd979bd MF |
970 | exit_ocfs2_uptodate_cache(); |
971 | ||
972 | mlog_exit_void(); | |
973 | } | |
974 | ||
975 | static void ocfs2_put_super(struct super_block *sb) | |
976 | { | |
977 | mlog_entry("(0x%p)\n", sb); | |
978 | ||
979 | ocfs2_sync_blockdev(sb); | |
980 | ocfs2_dismount_volume(sb, 0); | |
981 | ||
982 | mlog_exit_void(); | |
983 | } | |
984 | ||
726c3342 | 985 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
986 | { |
987 | struct ocfs2_super *osb; | |
988 | u32 numbits, freebits; | |
989 | int status; | |
990 | struct ocfs2_dinode *bm_lock; | |
991 | struct buffer_head *bh = NULL; | |
992 | struct inode *inode = NULL; | |
993 | ||
726c3342 | 994 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 995 | |
726c3342 | 996 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
997 | |
998 | inode = ocfs2_get_system_file_inode(osb, | |
999 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1000 | OCFS2_INVALID_SLOT); | |
1001 | if (!inode) { | |
1002 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1003 | status = -EIO; | |
1004 | goto bail; | |
1005 | } | |
1006 | ||
e63aecb6 | 1007 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1008 | if (status < 0) { |
1009 | mlog_errno(status); | |
1010 | goto bail; | |
1011 | } | |
1012 | ||
1013 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1014 | ||
1015 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1016 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1017 | ||
1018 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1019 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1020 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1021 | buf->f_blocks = ((sector_t) numbits) * | |
1022 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1023 | buf->f_bfree = ((sector_t) freebits) * | |
1024 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1025 | buf->f_bavail = buf->f_bfree; | |
1026 | buf->f_files = numbits; | |
1027 | buf->f_ffree = freebits; | |
1028 | ||
1029 | brelse(bh); | |
1030 | ||
e63aecb6 | 1031 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1032 | status = 0; |
1033 | bail: | |
1034 | if (inode) | |
1035 | iput(inode); | |
1036 | ||
1037 | mlog_exit(status); | |
1038 | ||
1039 | return status; | |
1040 | } | |
1041 | ||
4ba9b9d0 | 1042 | static void ocfs2_inode_init_once(struct kmem_cache *cachep, void *data) |
ccd979bd MF |
1043 | { |
1044 | struct ocfs2_inode_info *oi = data; | |
1045 | ||
a35afb83 CL |
1046 | oi->ip_flags = 0; |
1047 | oi->ip_open_count = 0; | |
1048 | spin_lock_init(&oi->ip_lock); | |
1049 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1050 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
1051 | oi->ip_created_trans = 0; | |
1052 | oi->ip_last_trans = 0; | |
1053 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 1054 | |
a35afb83 CL |
1055 | init_rwsem(&oi->ip_alloc_sem); |
1056 | mutex_init(&oi->ip_io_mutex); | |
ccd979bd | 1057 | |
a35afb83 CL |
1058 | oi->ip_blkno = 0ULL; |
1059 | oi->ip_clusters = 0; | |
ccd979bd | 1060 | |
a35afb83 | 1061 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1062 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1063 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1064 | |
a35afb83 | 1065 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 1066 | |
a35afb83 | 1067 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1068 | } |
1069 | ||
1070 | static int ocfs2_initialize_mem_caches(void) | |
1071 | { | |
1072 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1073 | sizeof(struct ocfs2_inode_info), |
1074 | 0, | |
1075 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1076 | SLAB_MEM_SPREAD), | |
20c2df83 | 1077 | ocfs2_inode_init_once); |
ccd979bd MF |
1078 | if (!ocfs2_inode_cachep) |
1079 | return -ENOMEM; | |
1080 | ||
ccd979bd MF |
1081 | return 0; |
1082 | } | |
1083 | ||
1084 | static void ocfs2_free_mem_caches(void) | |
1085 | { | |
1086 | if (ocfs2_inode_cachep) | |
1087 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd MF |
1088 | |
1089 | ocfs2_inode_cachep = NULL; | |
ccd979bd MF |
1090 | } |
1091 | ||
1092 | static int ocfs2_get_sector(struct super_block *sb, | |
1093 | struct buffer_head **bh, | |
1094 | int block, | |
1095 | int sect_size) | |
1096 | { | |
1097 | if (!sb_set_blocksize(sb, sect_size)) { | |
1098 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1099 | return -EIO; | |
1100 | } | |
1101 | ||
1102 | *bh = sb_getblk(sb, block); | |
1103 | if (!*bh) { | |
1104 | mlog_errno(-EIO); | |
1105 | return -EIO; | |
1106 | } | |
1107 | lock_buffer(*bh); | |
1108 | if (!buffer_dirty(*bh)) | |
1109 | clear_buffer_uptodate(*bh); | |
1110 | unlock_buffer(*bh); | |
1111 | ll_rw_block(READ, 1, bh); | |
1112 | wait_on_buffer(*bh); | |
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | /* ocfs2 1.0 only allows one cluster and node identity per kernel image. */ | |
1117 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb) | |
1118 | { | |
1119 | int status; | |
1120 | ||
1121 | /* XXX hold a ref on the node while mounte? easy enough, if | |
1122 | * desirable. */ | |
c271c5c2 SM |
1123 | if (ocfs2_mount_local(osb)) |
1124 | osb->node_num = 0; | |
1125 | else | |
1126 | osb->node_num = o2nm_this_node(); | |
1127 | ||
ccd979bd MF |
1128 | if (osb->node_num == O2NM_MAX_NODES) { |
1129 | mlog(ML_ERROR, "could not find this host's node number\n"); | |
1130 | status = -ENOENT; | |
1131 | goto bail; | |
1132 | } | |
1133 | ||
781ee3e2 | 1134 | mlog(0, "I am node %d\n", osb->node_num); |
ccd979bd MF |
1135 | |
1136 | status = 0; | |
1137 | bail: | |
1138 | return status; | |
1139 | } | |
1140 | ||
1141 | static int ocfs2_mount_volume(struct super_block *sb) | |
1142 | { | |
1143 | int status = 0; | |
1144 | int unlock_super = 0; | |
1145 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1146 | ||
1147 | mlog_entry_void(); | |
1148 | ||
1149 | if (ocfs2_is_hard_readonly(osb)) | |
1150 | goto leave; | |
1151 | ||
1152 | status = ocfs2_fill_local_node_info(osb); | |
1153 | if (status < 0) { | |
1154 | mlog_errno(status); | |
1155 | goto leave; | |
1156 | } | |
1157 | ||
ccd979bd MF |
1158 | status = ocfs2_dlm_init(osb); |
1159 | if (status < 0) { | |
1160 | mlog_errno(status); | |
1161 | goto leave; | |
1162 | } | |
1163 | ||
ccd979bd MF |
1164 | status = ocfs2_super_lock(osb, 1); |
1165 | if (status < 0) { | |
1166 | mlog_errno(status); | |
1167 | goto leave; | |
1168 | } | |
1169 | unlock_super = 1; | |
1170 | ||
1171 | /* This will load up the node map and add ourselves to it. */ | |
1172 | status = ocfs2_find_slot(osb); | |
1173 | if (status < 0) { | |
1174 | mlog_errno(status); | |
1175 | goto leave; | |
1176 | } | |
1177 | ||
ccd979bd MF |
1178 | /* load all node-local system inodes */ |
1179 | status = ocfs2_init_local_system_inodes(osb); | |
1180 | if (status < 0) { | |
1181 | mlog_errno(status); | |
1182 | goto leave; | |
1183 | } | |
1184 | ||
1185 | status = ocfs2_check_volume(osb); | |
1186 | if (status < 0) { | |
1187 | mlog_errno(status); | |
1188 | goto leave; | |
1189 | } | |
1190 | ||
1191 | status = ocfs2_truncate_log_init(osb); | |
1192 | if (status < 0) { | |
1193 | mlog_errno(status); | |
1194 | goto leave; | |
1195 | } | |
1196 | ||
c271c5c2 SM |
1197 | if (ocfs2_mount_local(osb)) |
1198 | goto leave; | |
1199 | ||
ccd979bd MF |
1200 | leave: |
1201 | if (unlock_super) | |
1202 | ocfs2_super_unlock(osb, 1); | |
1203 | ||
1204 | mlog_exit(status); | |
1205 | return status; | |
1206 | } | |
1207 | ||
1208 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
1209 | * memory barriers to make sure that we'll see the null task before | |
1210 | * being woken up */ | |
1211 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
1212 | { | |
1213 | mb(); | |
1214 | return osb->recovery_thread_task != NULL; | |
1215 | } | |
1216 | ||
1217 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) | |
1218 | { | |
1219 | int tmp; | |
1220 | struct ocfs2_super *osb = NULL; | |
c271c5c2 | 1221 | char nodestr[8]; |
ccd979bd MF |
1222 | |
1223 | mlog_entry("(0x%p)\n", sb); | |
1224 | ||
1225 | BUG_ON(!sb); | |
1226 | osb = OCFS2_SB(sb); | |
1227 | BUG_ON(!osb); | |
1228 | ||
1229 | ocfs2_shutdown_local_alloc(osb); | |
1230 | ||
1231 | ocfs2_truncate_log_shutdown(osb); | |
1232 | ||
1233 | /* disable any new recovery threads and wait for any currently | |
1234 | * running ones to exit. Do this before setting the vol_state. */ | |
c74ec2f7 | 1235 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1236 | osb->disable_recovery = 1; |
c74ec2f7 | 1237 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1238 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); |
1239 | ||
1240 | /* At this point, we know that no more recovery threads can be | |
1241 | * launched, so wait for any recovery completion work to | |
1242 | * complete. */ | |
1243 | flush_workqueue(ocfs2_wq); | |
1244 | ||
1245 | ocfs2_journal_shutdown(osb); | |
1246 | ||
1247 | ocfs2_sync_blockdev(sb); | |
1248 | ||
1249 | /* No dlm means we've failed during mount, so skip all the | |
1250 | * steps which depended on that to complete. */ | |
1251 | if (osb->dlm) { | |
1252 | tmp = ocfs2_super_lock(osb, 1); | |
1253 | if (tmp < 0) { | |
1254 | mlog_errno(tmp); | |
1255 | return; | |
1256 | } | |
19b613d4 | 1257 | } |
ccd979bd | 1258 | |
19b613d4 MF |
1259 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1260 | ocfs2_put_slot(osb); | |
ccd979bd | 1261 | |
19b613d4 | 1262 | if (osb->dlm) |
ccd979bd | 1263 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1264 | |
1265 | ocfs2_release_system_inodes(osb); | |
1266 | ||
34d024f8 | 1267 | if (osb->dlm) |
ccd979bd | 1268 | ocfs2_dlm_shutdown(osb); |
ccd979bd | 1269 | |
ccd979bd MF |
1270 | debugfs_remove(osb->osb_debug_root); |
1271 | ||
1272 | if (!mnt_err) | |
1273 | ocfs2_stop_heartbeat(osb); | |
1274 | ||
1275 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1276 | ||
c271c5c2 SM |
1277 | if (ocfs2_mount_local(osb)) |
1278 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1279 | else | |
1280 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
1281 | ||
1282 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1283 | osb->dev_str, nodestr); | |
ccd979bd MF |
1284 | |
1285 | ocfs2_delete_osb(osb); | |
1286 | kfree(osb); | |
1287 | sb->s_dev = 0; | |
1288 | sb->s_fs_info = NULL; | |
1289 | } | |
1290 | ||
1291 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1292 | unsigned uuid_bytes) | |
1293 | { | |
1294 | int i, ret; | |
1295 | char *ptr; | |
1296 | ||
1297 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1298 | ||
cd861280 | 1299 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1300 | if (osb->uuid_str == NULL) |
1301 | return -ENOMEM; | |
1302 | ||
ccd979bd MF |
1303 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1304 | /* print with null */ | |
1305 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1306 | if (ret != 2) /* drop super cleans up */ | |
1307 | return -EINVAL; | |
1308 | /* then only advance past the last char */ | |
1309 | ptr += 2; | |
1310 | } | |
1311 | ||
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | static int ocfs2_initialize_super(struct super_block *sb, | |
1316 | struct buffer_head *bh, | |
1317 | int sector_size) | |
1318 | { | |
bddb8eb3 | 1319 | int status; |
5a254031 MF |
1320 | int i, cbits, bbits; |
1321 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 1322 | struct inode *inode = NULL; |
ccd979bd MF |
1323 | struct ocfs2_journal *journal; |
1324 | __le32 uuid_net_key; | |
1325 | struct ocfs2_super *osb; | |
1326 | ||
1327 | mlog_entry_void(); | |
1328 | ||
cd861280 | 1329 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1330 | if (!osb) { |
1331 | status = -ENOMEM; | |
1332 | mlog_errno(status); | |
1333 | goto bail; | |
1334 | } | |
1335 | ||
1336 | sb->s_fs_info = osb; | |
1337 | sb->s_op = &ocfs2_sops; | |
1338 | sb->s_export_op = &ocfs2_export_ops; | |
e0dceaf0 | 1339 | sb->s_time_gran = 1; |
ccd979bd MF |
1340 | sb->s_flags |= MS_NOATIME; |
1341 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
1342 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
1343 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1344 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd MF |
1345 | |
1346 | osb->sb = sb; | |
1347 | /* Save off for ocfs2_rw_direct */ | |
1348 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1349 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 1350 | |
ccd979bd | 1351 | init_waitqueue_head(&osb->recovery_event); |
34d024f8 MF |
1352 | spin_lock_init(&osb->dc_task_lock); |
1353 | init_waitqueue_head(&osb->dc_event); | |
1354 | osb->dc_work_sequence = 0; | |
1355 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
1356 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
1357 | osb->blocked_lock_count = 0; | |
ccd979bd MF |
1358 | spin_lock_init(&osb->osb_lock); |
1359 | ||
1360 | atomic_set(&osb->alloc_stats.moves, 0); | |
1361 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1362 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1363 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1364 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1365 | ||
1366 | ocfs2_init_node_maps(osb); | |
1367 | ||
1368 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1369 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1370 | ||
c74ec2f7 | 1371 | mutex_init(&osb->recovery_lock); |
ccd979bd MF |
1372 | |
1373 | osb->disable_recovery = 0; | |
1374 | osb->recovery_thread_task = NULL; | |
1375 | ||
1376 | init_waitqueue_head(&osb->checkpoint_event); | |
1377 | atomic_set(&osb->needs_checkpoint, 0); | |
1378 | ||
7f1a37e3 TY |
1379 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1380 | ||
ccd979bd MF |
1381 | osb->node_num = O2NM_INVALID_NODE_NUM; |
1382 | osb->slot_num = OCFS2_INVALID_SLOT; | |
1383 | ||
1384 | osb->local_alloc_state = OCFS2_LA_UNUSED; | |
1385 | osb->local_alloc_bh = NULL; | |
1386 | ||
1387 | ocfs2_setup_hb_callbacks(osb); | |
1388 | ||
1389 | init_waitqueue_head(&osb->osb_mount_event); | |
1390 | ||
1391 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
1392 | if (!osb->vol_label) { | |
1393 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
1394 | status = -ENOMEM; | |
1395 | goto bail; | |
1396 | } | |
1397 | ||
ccd979bd MF |
1398 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
1399 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
1400 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
1401 | osb->max_slots); | |
1402 | status = -EINVAL; | |
1403 | goto bail; | |
1404 | } | |
781ee3e2 | 1405 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 1406 | |
b4df6ed8 MF |
1407 | init_waitqueue_head(&osb->osb_wipe_event); |
1408 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
1409 | sizeof(*osb->osb_orphan_wipes), | |
1410 | GFP_KERNEL); | |
1411 | if (!osb->osb_orphan_wipes) { | |
1412 | status = -ENOMEM; | |
1413 | mlog_errno(status); | |
1414 | goto bail; | |
1415 | } | |
1416 | ||
ccd979bd MF |
1417 | osb->s_feature_compat = |
1418 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
1419 | osb->s_feature_ro_compat = | |
1420 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
1421 | osb->s_feature_incompat = | |
1422 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
1423 | ||
1424 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
1425 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
1426 | "optional features (%x).\n", i); | |
1427 | status = -EINVAL; | |
1428 | goto bail; | |
1429 | } | |
1430 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
1431 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
1432 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
1433 | "unsupported optional features (%x).\n", i); | |
1434 | status = -EINVAL; | |
1435 | goto bail; | |
1436 | } | |
1437 | ||
1438 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); | |
1439 | ||
1440 | /* FIXME | |
1441 | * This should be done in ocfs2_journal_init(), but unknown | |
1442 | * ordering issues will cause the filesystem to crash. | |
1443 | * If anyone wants to figure out what part of the code | |
1444 | * refers to osb->journal before ocfs2_journal_init() is run, | |
1445 | * be my guest. | |
1446 | */ | |
1447 | /* initialize our journal structure */ | |
1448 | ||
cd861280 | 1449 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
1450 | if (!journal) { |
1451 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
1452 | status = -ENOMEM; | |
1453 | goto bail; | |
1454 | } | |
1455 | osb->journal = journal; | |
1456 | journal->j_osb = osb; | |
1457 | ||
1458 | atomic_set(&journal->j_num_trans, 0); | |
1459 | init_rwsem(&journal->j_trans_barrier); | |
1460 | init_waitqueue_head(&journal->j_checkpointed); | |
1461 | spin_lock_init(&journal->j_lock); | |
1462 | journal->j_trans_id = (unsigned long) 1; | |
1463 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 1464 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
1465 | journal->j_state = OCFS2_JOURNAL_FREE; |
1466 | ||
1467 | /* get some pseudo constants for clustersize bits */ | |
1468 | osb->s_clustersize_bits = | |
1469 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
1470 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
1471 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
1472 | ||
1473 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
1474 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
1475 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
1476 | osb->s_clustersize); | |
1477 | status = -EINVAL; | |
1478 | goto bail; | |
1479 | } | |
1480 | ||
1481 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
1482 | > (u32)~0UL) { | |
1483 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
1484 | "what jbd can address in 32 bits.\n"); | |
1485 | status = -EINVAL; | |
1486 | goto bail; | |
1487 | } | |
1488 | ||
1489 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
1490 | sizeof(di->id2.i_super.s_uuid))) { | |
1491 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
1492 | status = -ENOMEM; | |
1493 | goto bail; | |
1494 | } | |
1495 | ||
78427043 | 1496 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
1497 | |
1498 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
1499 | osb->vol_label[63] = '\0'; | |
1500 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
1501 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
1502 | osb->first_cluster_group_blkno = | |
1503 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
1504 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
1505 | mlog(0, "vol_label: %s\n", osb->vol_label); | |
1506 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
1507 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
1508 | (unsigned long long)osb->root_blkno, | |
1509 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
1510 | |
1511 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
1512 | if (!osb->osb_dlm_debug) { | |
1513 | status = -ENOMEM; | |
1514 | mlog_errno(status); | |
1515 | goto bail; | |
1516 | } | |
1517 | ||
1518 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
1519 | ||
1520 | /* load root, system_dir, and all global system inodes */ | |
1521 | status = ocfs2_init_global_system_inodes(osb); | |
1522 | if (status < 0) { | |
1523 | mlog_errno(status); | |
1524 | goto bail; | |
1525 | } | |
1526 | ||
1527 | /* | |
1528 | * global bitmap | |
1529 | */ | |
1530 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
1531 | OCFS2_INVALID_SLOT); | |
1532 | if (!inode) { | |
1533 | status = -EINVAL; | |
1534 | mlog_errno(status); | |
1535 | goto bail; | |
1536 | } | |
1537 | ||
1538 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
ccd979bd | 1539 | iput(inode); |
ccd979bd | 1540 | |
e9d578a8 | 1541 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; |
ccd979bd MF |
1542 | |
1543 | status = ocfs2_init_slot_info(osb); | |
1544 | if (status < 0) { | |
1545 | mlog_errno(status); | |
1546 | goto bail; | |
1547 | } | |
1548 | ||
ccd979bd MF |
1549 | bail: |
1550 | mlog_exit(status); | |
1551 | return status; | |
1552 | } | |
1553 | ||
1554 | /* | |
1555 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
1556 | * -EINVAL if there is a bad superblock | |
1557 | * 0 on success | |
1558 | */ | |
1559 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
1560 | struct buffer_head *bh, | |
1561 | u32 blksz) | |
1562 | { | |
1563 | int status = -EAGAIN; | |
1564 | ||
1565 | mlog_entry_void(); | |
1566 | ||
1567 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
1568 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
1569 | status = -EINVAL; | |
1570 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
1571 | mlog(ML_ERROR, "found superblock with incorrect block " | |
1572 | "size: found %u, should be %u\n", | |
1573 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
1574 | blksz); | |
1575 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
1576 | OCFS2_MAJOR_REV_LEVEL || | |
1577 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
1578 | OCFS2_MINOR_REV_LEVEL) { | |
1579 | mlog(ML_ERROR, "found superblock with bad version: " | |
1580 | "found %u.%u, should be %u.%u\n", | |
1581 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
1582 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
1583 | OCFS2_MAJOR_REV_LEVEL, | |
1584 | OCFS2_MINOR_REV_LEVEL); | |
1585 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
1586 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 1587 | "found %llu, should be %llu\n", |
1ca1a111 | 1588 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 1589 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
1590 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
1591 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
1592 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
1593 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
1594 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
1595 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
1596 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
1597 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
1598 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
1599 | mlog(ML_ERROR, | |
1600 | "Superblock slots found greater than file system " | |
1601 | "maximum: found %u, max %u\n", | |
1602 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
1603 | OCFS2_MAX_SLOTS); | |
1604 | } else { | |
1605 | /* found it! */ | |
1606 | status = 0; | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | mlog_exit(status); | |
1611 | return status; | |
1612 | } | |
1613 | ||
1614 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
1615 | { | |
bddb8eb3 | 1616 | int status; |
ccd979bd | 1617 | int dirty; |
c271c5c2 | 1618 | int local; |
ccd979bd MF |
1619 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
1620 | * recover | |
1621 | * ourselves. */ | |
1622 | ||
1623 | mlog_entry_void(); | |
1624 | ||
1625 | /* Init our journal object. */ | |
1626 | status = ocfs2_journal_init(osb->journal, &dirty); | |
1627 | if (status < 0) { | |
1628 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
1629 | goto finally; | |
1630 | } | |
1631 | ||
1632 | /* If the journal was unmounted cleanly then we don't want to | |
1633 | * recover anything. Otherwise, journal_load will do that | |
1634 | * dirty work for us :) */ | |
1635 | if (!dirty) { | |
1636 | status = ocfs2_journal_wipe(osb->journal, 0); | |
1637 | if (status < 0) { | |
1638 | mlog_errno(status); | |
1639 | goto finally; | |
1640 | } | |
1641 | } else { | |
1642 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
1643 | "recovering volume.\n"); | |
1644 | } | |
1645 | ||
c271c5c2 SM |
1646 | local = ocfs2_mount_local(osb); |
1647 | ||
ccd979bd | 1648 | /* will play back anything left in the journal. */ |
c271c5c2 | 1649 | ocfs2_journal_load(osb->journal, local); |
ccd979bd MF |
1650 | |
1651 | if (dirty) { | |
1652 | /* recover my local alloc if we didn't unmount cleanly. */ | |
1653 | status = ocfs2_begin_local_alloc_recovery(osb, | |
1654 | osb->slot_num, | |
1655 | &local_alloc); | |
1656 | if (status < 0) { | |
1657 | mlog_errno(status); | |
1658 | goto finally; | |
1659 | } | |
1660 | /* we complete the recovery process after we've marked | |
1661 | * ourselves as mounted. */ | |
1662 | } | |
1663 | ||
1664 | mlog(0, "Journal loaded.\n"); | |
1665 | ||
1666 | status = ocfs2_load_local_alloc(osb); | |
1667 | if (status < 0) { | |
1668 | mlog_errno(status); | |
1669 | goto finally; | |
1670 | } | |
1671 | ||
1672 | if (dirty) { | |
1673 | /* Recovery will be completed after we've mounted the | |
1674 | * rest of the volume. */ | |
1675 | osb->dirty = 1; | |
1676 | osb->local_alloc_copy = local_alloc; | |
1677 | local_alloc = NULL; | |
1678 | } | |
1679 | ||
1680 | /* go through each journal, trylock it and if you get the | |
1681 | * lock, and it's marked as dirty, set the bit in the recover | |
1682 | * map and launch a recovery thread for it. */ | |
1683 | status = ocfs2_mark_dead_nodes(osb); | |
1684 | if (status < 0) | |
1685 | mlog_errno(status); | |
1686 | ||
1687 | finally: | |
1688 | if (local_alloc) | |
1689 | kfree(local_alloc); | |
1690 | ||
1691 | mlog_exit(status); | |
1692 | return status; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * The routine gets called from dismount or close whenever a dismount on | |
1697 | * volume is requested and the osb open count becomes 1. | |
1698 | * It will remove the osb from the global list and also free up all the | |
1699 | * initialized resources and fileobject. | |
1700 | */ | |
1701 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
1702 | { | |
1703 | mlog_entry_void(); | |
1704 | ||
1705 | /* This function assumes that the caller has the main osb resource */ | |
1706 | ||
1707 | if (osb->slot_info) | |
1708 | ocfs2_free_slot_info(osb->slot_info); | |
1709 | ||
b4df6ed8 | 1710 | kfree(osb->osb_orphan_wipes); |
ccd979bd MF |
1711 | /* FIXME |
1712 | * This belongs in journal shutdown, but because we have to | |
1713 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
1714 | * we free it here. | |
1715 | */ | |
1716 | kfree(osb->journal); | |
1717 | if (osb->local_alloc_copy) | |
1718 | kfree(osb->local_alloc_copy); | |
1719 | kfree(osb->uuid_str); | |
1720 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
1721 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
1722 | ||
1723 | mlog_exit_void(); | |
1724 | } | |
1725 | ||
1726 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
1727 | * panic(). We do not support continue-on-error operation. */ | |
1728 | static void ocfs2_handle_error(struct super_block *sb) | |
1729 | { | |
1730 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1731 | ||
1732 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
1733 | panic("OCFS2: (device %s): panic forced after error\n", | |
1734 | sb->s_id); | |
1735 | ||
1736 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
1737 | ||
1738 | if (sb->s_flags & MS_RDONLY && | |
1739 | (ocfs2_is_soft_readonly(osb) || | |
1740 | ocfs2_is_hard_readonly(osb))) | |
1741 | return; | |
1742 | ||
1743 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
1744 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
1745 | "system is unmounted.\n"); | |
1746 | sb->s_flags |= MS_RDONLY; | |
1747 | ocfs2_set_ro_flag(osb, 0); | |
1748 | } | |
1749 | ||
1750 | static char error_buf[1024]; | |
1751 | ||
1752 | void __ocfs2_error(struct super_block *sb, | |
1753 | const char *function, | |
1754 | const char *fmt, ...) | |
1755 | { | |
1756 | va_list args; | |
1757 | ||
1758 | va_start(args, fmt); | |
4a6e617a | 1759 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1760 | va_end(args); |
1761 | ||
1762 | /* Not using mlog here because we want to show the actual | |
1763 | * function the error came from. */ | |
1764 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
1765 | sb->s_id, function, error_buf); | |
1766 | ||
1767 | ocfs2_handle_error(sb); | |
1768 | } | |
1769 | ||
1770 | /* Handle critical errors. This is intentionally more drastic than | |
1771 | * ocfs2_handle_error, so we only use for things like journal errors, | |
1772 | * etc. */ | |
1773 | void __ocfs2_abort(struct super_block* sb, | |
1774 | const char *function, | |
1775 | const char *fmt, ...) | |
1776 | { | |
1777 | va_list args; | |
1778 | ||
1779 | va_start(args, fmt); | |
4a6e617a | 1780 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1781 | va_end(args); |
1782 | ||
1783 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
1784 | sb->s_id, function, error_buf); | |
1785 | ||
1786 | /* We don't have the cluster support yet to go straight to | |
1787 | * hard readonly in here. Until then, we want to keep | |
1788 | * ocfs2_abort() so that we can at least mark critical | |
1789 | * errors. | |
1790 | * | |
1791 | * TODO: This should abort the journal and alert other nodes | |
1792 | * that our slot needs recovery. */ | |
1793 | ||
1794 | /* Force a panic(). This stinks, but it's better than letting | |
1795 | * things continue without having a proper hard readonly | |
1796 | * here. */ | |
1797 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
1798 | ocfs2_handle_error(sb); | |
1799 | } | |
1800 | ||
1801 | module_init(ocfs2_init); | |
1802 | module_exit(ocfs2_exit); |