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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> |
6953b4c0 | 43 | #include <linux/seq_file.h> |
ccd979bd MF |
44 | |
45 | #define MLOG_MASK_PREFIX ML_SUPER | |
46 | #include <cluster/masklog.h> | |
47 | ||
48 | #include "ocfs2.h" | |
49 | ||
50 | /* this should be the only file to include a version 1 header */ | |
51 | #include "ocfs1_fs_compat.h" | |
52 | ||
53 | #include "alloc.h" | |
54 | #include "dlmglue.h" | |
55 | #include "export.h" | |
56 | #include "extent_map.h" | |
57 | #include "heartbeat.h" | |
58 | #include "inode.h" | |
59 | #include "journal.h" | |
60 | #include "localalloc.h" | |
61 | #include "namei.h" | |
62 | #include "slot_map.h" | |
63 | #include "super.h" | |
64 | #include "sysfile.h" | |
65 | #include "uptodate.h" | |
66 | #include "ver.h" | |
ccd979bd MF |
67 | |
68 | #include "buffer_head_io.h" | |
69 | ||
e18b890b | 70 | static struct kmem_cache *ocfs2_inode_cachep = NULL; |
ccd979bd | 71 | |
ccd979bd MF |
72 | /* OCFS2 needs to schedule several differnt types of work which |
73 | * require cluster locking, disk I/O, recovery waits, etc. Since these | |
74 | * types of work tend to be heavy we avoid using the kernel events | |
75 | * workqueue and schedule on our own. */ | |
76 | struct workqueue_struct *ocfs2_wq = NULL; | |
77 | ||
78 | static struct dentry *ocfs2_debugfs_root = NULL; | |
79 | ||
80 | MODULE_AUTHOR("Oracle"); | |
81 | MODULE_LICENSE("GPL"); | |
82 | ||
c0123ade TY |
83 | struct mount_options |
84 | { | |
d147b3d6 | 85 | unsigned long commit_interval; |
c0123ade TY |
86 | unsigned long mount_opt; |
87 | unsigned int atime_quantum; | |
88 | signed short slot; | |
2fbe8d1e | 89 | unsigned int localalloc_opt; |
c0123ade TY |
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_check_volume(struct ocfs2_super *osb); |
112 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
113 | struct buffer_head *bh, | |
114 | u32 sectsize); | |
115 | static int ocfs2_initialize_super(struct super_block *sb, | |
116 | struct buffer_head *bh, | |
117 | int sector_size); | |
118 | static int ocfs2_get_sector(struct super_block *sb, | |
119 | struct buffer_head **bh, | |
120 | int block, | |
121 | int sect_size); | |
122 | static void ocfs2_write_super(struct super_block *sb); | |
123 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
124 | static void ocfs2_destroy_inode(struct inode *inode); | |
125 | ||
ee9b6d61 | 126 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
127 | .statfs = ocfs2_statfs, |
128 | .alloc_inode = ocfs2_alloc_inode, | |
129 | .destroy_inode = ocfs2_destroy_inode, | |
130 | .drop_inode = ocfs2_drop_inode, | |
131 | .clear_inode = ocfs2_clear_inode, | |
132 | .delete_inode = ocfs2_delete_inode, | |
133 | .sync_fs = ocfs2_sync_fs, | |
134 | .write_super = ocfs2_write_super, | |
135 | .put_super = ocfs2_put_super, | |
136 | .remount_fs = ocfs2_remount, | |
d550071c | 137 | .show_options = ocfs2_show_options, |
ccd979bd MF |
138 | }; |
139 | ||
140 | enum { | |
141 | Opt_barrier, | |
142 | Opt_err_panic, | |
143 | Opt_err_ro, | |
144 | Opt_intr, | |
145 | Opt_nointr, | |
146 | Opt_hb_none, | |
147 | Opt_hb_local, | |
148 | Opt_data_ordered, | |
149 | Opt_data_writeback, | |
7f1a37e3 | 150 | Opt_atime_quantum, |
baf4661a | 151 | Opt_slot, |
d147b3d6 | 152 | Opt_commit, |
2fbe8d1e | 153 | Opt_localalloc, |
53fc622b | 154 | Opt_localflocks, |
ccd979bd MF |
155 | Opt_err, |
156 | }; | |
157 | ||
158 | static match_table_t tokens = { | |
159 | {Opt_barrier, "barrier=%u"}, | |
160 | {Opt_err_panic, "errors=panic"}, | |
161 | {Opt_err_ro, "errors=remount-ro"}, | |
162 | {Opt_intr, "intr"}, | |
163 | {Opt_nointr, "nointr"}, | |
164 | {Opt_hb_none, OCFS2_HB_NONE}, | |
165 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
166 | {Opt_data_ordered, "data=ordered"}, | |
167 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 168 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 169 | {Opt_slot, "preferred_slot=%u"}, |
d147b3d6 | 170 | {Opt_commit, "commit=%u"}, |
2fbe8d1e | 171 | {Opt_localalloc, "localalloc=%d"}, |
53fc622b | 172 | {Opt_localflocks, "localflocks"}, |
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 | ||
5fa0613e | 221 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
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 | ||
5fa0613e | 229 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
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 | ||
580 | /* probe for superblock */ | |
581 | status = ocfs2_sb_probe(sb, &bh, §or_size); | |
582 | if (status < 0) { | |
583 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
584 | goto read_super_error; | |
585 | } | |
586 | ||
587 | status = ocfs2_initialize_super(sb, bh, sector_size); | |
588 | osb = OCFS2_SB(sb); | |
589 | if (status < 0) { | |
590 | mlog_errno(status); | |
591 | goto read_super_error; | |
592 | } | |
593 | brelse(bh); | |
594 | bh = NULL; | |
c0123ade TY |
595 | osb->s_mount_opt = parsed_options.mount_opt; |
596 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
597 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 598 | osb->osb_commit_interval = parsed_options.commit_interval; |
2fbe8d1e | 599 | osb->local_alloc_size = parsed_options.localalloc_opt; |
ccd979bd MF |
600 | |
601 | sb->s_magic = OCFS2_SUPER_MAGIC; | |
602 | ||
603 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, | |
604 | * heartbeat=none */ | |
605 | if (bdev_read_only(sb->s_bdev)) { | |
606 | if (!(sb->s_flags & MS_RDONLY)) { | |
607 | status = -EACCES; | |
608 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
609 | "mount was not specified.\n"); | |
610 | goto read_super_error; | |
611 | } | |
612 | ||
613 | /* You should not be able to start a local heartbeat | |
614 | * on a readonly device. */ | |
615 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
616 | status = -EROFS; | |
617 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
618 | "device.\n"); | |
619 | goto read_super_error; | |
620 | } | |
621 | ||
622 | status = ocfs2_check_journals_nolocks(osb); | |
623 | if (status < 0) { | |
624 | if (status == -EROFS) | |
625 | mlog(ML_ERROR, "Recovery required on readonly " | |
626 | "file system, but write access is " | |
627 | "unavailable.\n"); | |
628 | else | |
629 | mlog_errno(status); | |
630 | goto read_super_error; | |
631 | } | |
632 | ||
633 | ocfs2_set_ro_flag(osb, 1); | |
634 | ||
635 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
636 | "services will be utilized for this mount. Recovery " | |
637 | "will be skipped.\n"); | |
638 | } | |
639 | ||
640 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
641 | if (sb->s_flags & MS_RDONLY) |
642 | ocfs2_set_ro_flag(osb, 0); | |
643 | } | |
644 | ||
c271c5c2 SM |
645 | status = ocfs2_verify_heartbeat(osb); |
646 | if (status < 0) { | |
647 | mlog_errno(status); | |
648 | goto read_super_error; | |
649 | } | |
650 | ||
ccd979bd MF |
651 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
652 | ocfs2_debugfs_root); | |
653 | if (!osb->osb_debug_root) { | |
654 | status = -EINVAL; | |
655 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
656 | goto read_super_error; | |
657 | } | |
658 | ||
659 | status = ocfs2_mount_volume(sb); | |
660 | if (osb->root_inode) | |
661 | inode = igrab(osb->root_inode); | |
662 | ||
663 | if (status < 0) | |
664 | goto read_super_error; | |
665 | ||
666 | if (!inode) { | |
667 | status = -EIO; | |
668 | mlog_errno(status); | |
669 | goto read_super_error; | |
670 | } | |
671 | ||
672 | root = d_alloc_root(inode); | |
673 | if (!root) { | |
674 | status = -ENOMEM; | |
675 | mlog_errno(status); | |
676 | goto read_super_error; | |
677 | } | |
678 | ||
679 | sb->s_root = root; | |
680 | ||
681 | ocfs2_complete_mount_recovery(osb); | |
682 | ||
c271c5c2 SM |
683 | if (ocfs2_mount_local(osb)) |
684 | snprintf(nodestr, sizeof(nodestr), "local"); | |
685 | else | |
19fdb624 | 686 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
687 | |
688 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 689 | "with %s data mode.\n", |
c271c5c2 | 690 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
691 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
692 | "ordered"); | |
693 | ||
694 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
695 | wake_up(&osb->osb_mount_event); | |
696 | ||
697 | mlog_exit(status); | |
698 | return status; | |
699 | ||
700 | read_super_error: | |
701 | if (bh != NULL) | |
702 | brelse(bh); | |
703 | ||
704 | if (inode) | |
705 | iput(inode); | |
706 | ||
707 | if (osb) { | |
708 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
709 | wake_up(&osb->osb_mount_event); | |
710 | ocfs2_dismount_volume(sb, 1); | |
711 | } | |
712 | ||
713 | mlog_exit(status); | |
714 | return status; | |
715 | } | |
716 | ||
454e2398 DH |
717 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
718 | int flags, | |
719 | const char *dev_name, | |
720 | void *data, | |
721 | struct vfsmount *mnt) | |
ccd979bd | 722 | { |
454e2398 DH |
723 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
724 | mnt); | |
ccd979bd MF |
725 | } |
726 | ||
727 | static struct file_system_type ocfs2_fs_type = { | |
728 | .owner = THIS_MODULE, | |
729 | .name = "ocfs2", | |
730 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
731 | * the fs? */ | |
732 | .kill_sb = kill_block_super, /* set to the generic one | |
733 | * right now, but do we | |
734 | * need to change that? */ | |
1ba9da2f | 735 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
736 | .next = NULL |
737 | }; | |
738 | ||
739 | static int ocfs2_parse_options(struct super_block *sb, | |
740 | char *options, | |
c0123ade | 741 | struct mount_options *mopt, |
ccd979bd MF |
742 | int is_remount) |
743 | { | |
744 | int status; | |
745 | char *p; | |
746 | ||
747 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
748 | options ? options : "(none)"); | |
749 | ||
d147b3d6 | 750 | mopt->commit_interval = 0; |
c0123ade TY |
751 | mopt->mount_opt = 0; |
752 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
753 | mopt->slot = OCFS2_INVALID_SLOT; | |
2fbe8d1e | 754 | mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; |
ccd979bd MF |
755 | |
756 | if (!options) { | |
757 | status = 1; | |
758 | goto bail; | |
759 | } | |
760 | ||
761 | while ((p = strsep(&options, ",")) != NULL) { | |
762 | int token, option; | |
763 | substring_t args[MAX_OPT_ARGS]; | |
764 | ||
765 | if (!*p) | |
766 | continue; | |
767 | ||
768 | token = match_token(p, tokens, args); | |
769 | switch (token) { | |
770 | case Opt_hb_local: | |
c0123ade | 771 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
772 | break; |
773 | case Opt_hb_none: | |
c0123ade | 774 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
775 | break; |
776 | case Opt_barrier: | |
777 | if (match_int(&args[0], &option)) { | |
778 | status = 0; | |
779 | goto bail; | |
780 | } | |
781 | if (option) | |
c0123ade | 782 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 783 | else |
c0123ade | 784 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
785 | break; |
786 | case Opt_intr: | |
c0123ade | 787 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
788 | break; |
789 | case Opt_nointr: | |
c0123ade | 790 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
791 | break; |
792 | case Opt_err_panic: | |
c0123ade | 793 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
794 | break; |
795 | case Opt_err_ro: | |
c0123ade | 796 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
797 | break; |
798 | case Opt_data_ordered: | |
c0123ade | 799 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
800 | break; |
801 | case Opt_data_writeback: | |
c0123ade | 802 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 803 | break; |
7f1a37e3 TY |
804 | case Opt_atime_quantum: |
805 | if (match_int(&args[0], &option)) { | |
806 | status = 0; | |
807 | goto bail; | |
808 | } | |
809 | if (option >= 0) | |
c0123ade | 810 | mopt->atime_quantum = option; |
7f1a37e3 | 811 | break; |
baf4661a SM |
812 | case Opt_slot: |
813 | option = 0; | |
814 | if (match_int(&args[0], &option)) { | |
815 | status = 0; | |
816 | goto bail; | |
817 | } | |
818 | if (option) | |
c0123ade | 819 | mopt->slot = (s16)option; |
baf4661a | 820 | break; |
d147b3d6 MF |
821 | case Opt_commit: |
822 | option = 0; | |
823 | if (match_int(&args[0], &option)) { | |
824 | status = 0; | |
825 | goto bail; | |
826 | } | |
827 | if (option < 0) | |
828 | return 0; | |
829 | if (option == 0) | |
830 | option = JBD_DEFAULT_MAX_COMMIT_AGE; | |
831 | mopt->commit_interval = HZ * option; | |
832 | break; | |
2fbe8d1e SM |
833 | case Opt_localalloc: |
834 | option = 0; | |
835 | if (match_int(&args[0], &option)) { | |
836 | status = 0; | |
837 | goto bail; | |
838 | } | |
839 | if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) | |
840 | mopt->localalloc_opt = option; | |
841 | break; | |
53fc622b MF |
842 | case Opt_localflocks: |
843 | /* | |
844 | * Changing this during remount could race | |
845 | * flock() requests, or "unbalance" existing | |
846 | * ones (e.g., a lock is taken in one mode but | |
847 | * dropped in the other). If users care enough | |
848 | * to flip locking modes during remount, we | |
849 | * could add a "local" flag to individual | |
850 | * flock structures for proper tracking of | |
851 | * state. | |
852 | */ | |
853 | if (!is_remount) | |
854 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
855 | break; | |
ccd979bd MF |
856 | default: |
857 | mlog(ML_ERROR, | |
858 | "Unrecognized mount option \"%s\" " | |
859 | "or missing value\n", p); | |
860 | status = 0; | |
861 | goto bail; | |
862 | } | |
863 | } | |
864 | ||
865 | status = 1; | |
866 | ||
867 | bail: | |
868 | mlog_exit(status); | |
869 | return status; | |
870 | } | |
871 | ||
d550071c SM |
872 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) |
873 | { | |
874 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
875 | unsigned long opts = osb->s_mount_opt; | |
876 | ||
877 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
878 | seq_printf(s, ",_netdev,heartbeat=local"); | |
879 | else | |
880 | seq_printf(s, ",heartbeat=none"); | |
881 | ||
882 | if (opts & OCFS2_MOUNT_NOINTR) | |
883 | seq_printf(s, ",nointr"); | |
884 | ||
885 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
886 | seq_printf(s, ",data=writeback"); | |
887 | else | |
888 | seq_printf(s, ",data=ordered"); | |
889 | ||
890 | if (opts & OCFS2_MOUNT_BARRIER) | |
891 | seq_printf(s, ",barrier=1"); | |
892 | ||
893 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
894 | seq_printf(s, ",errors=panic"); | |
895 | else | |
896 | seq_printf(s, ",errors=remount-ro"); | |
897 | ||
898 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
899 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
900 | ||
901 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
902 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
903 | ||
d147b3d6 MF |
904 | if (osb->osb_commit_interval) |
905 | seq_printf(s, ",commit=%u", | |
906 | (unsigned) (osb->osb_commit_interval / HZ)); | |
907 | ||
2fbe8d1e SM |
908 | if (osb->local_alloc_size != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) |
909 | seq_printf(s, ",localalloc=%d", osb->local_alloc_size); | |
910 | ||
53fc622b MF |
911 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
912 | seq_printf(s, ",localflocks,"); | |
913 | ||
d550071c SM |
914 | return 0; |
915 | } | |
916 | ||
ccd979bd MF |
917 | static int __init ocfs2_init(void) |
918 | { | |
919 | int status; | |
920 | ||
921 | mlog_entry_void(); | |
922 | ||
923 | ocfs2_print_version(); | |
924 | ||
ccd979bd MF |
925 | status = init_ocfs2_uptodate_cache(); |
926 | if (status < 0) { | |
927 | mlog_errno(status); | |
928 | goto leave; | |
929 | } | |
930 | ||
931 | status = ocfs2_initialize_mem_caches(); | |
932 | if (status < 0) { | |
933 | mlog_errno(status); | |
934 | goto leave; | |
935 | } | |
936 | ||
937 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
938 | if (!ocfs2_wq) { | |
939 | status = -ENOMEM; | |
940 | goto leave; | |
941 | } | |
942 | ||
ccd979bd MF |
943 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
944 | if (!ocfs2_debugfs_root) { | |
945 | status = -EFAULT; | |
946 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
947 | } | |
948 | ||
63e0c48a JB |
949 | ocfs2_set_locking_protocol(); |
950 | ||
ccd979bd MF |
951 | leave: |
952 | if (status < 0) { | |
953 | ocfs2_free_mem_caches(); | |
954 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
955 | } |
956 | ||
957 | mlog_exit(status); | |
958 | ||
959 | if (status >= 0) { | |
960 | return register_filesystem(&ocfs2_fs_type); | |
961 | } else | |
962 | return -1; | |
963 | } | |
964 | ||
965 | static void __exit ocfs2_exit(void) | |
966 | { | |
967 | mlog_entry_void(); | |
968 | ||
969 | if (ocfs2_wq) { | |
970 | flush_workqueue(ocfs2_wq); | |
971 | destroy_workqueue(ocfs2_wq); | |
972 | } | |
973 | ||
974 | debugfs_remove(ocfs2_debugfs_root); | |
975 | ||
976 | ocfs2_free_mem_caches(); | |
977 | ||
978 | unregister_filesystem(&ocfs2_fs_type); | |
979 | ||
ccd979bd MF |
980 | exit_ocfs2_uptodate_cache(); |
981 | ||
982 | mlog_exit_void(); | |
983 | } | |
984 | ||
985 | static void ocfs2_put_super(struct super_block *sb) | |
986 | { | |
987 | mlog_entry("(0x%p)\n", sb); | |
988 | ||
989 | ocfs2_sync_blockdev(sb); | |
990 | ocfs2_dismount_volume(sb, 0); | |
991 | ||
992 | mlog_exit_void(); | |
993 | } | |
994 | ||
726c3342 | 995 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
996 | { |
997 | struct ocfs2_super *osb; | |
998 | u32 numbits, freebits; | |
999 | int status; | |
1000 | struct ocfs2_dinode *bm_lock; | |
1001 | struct buffer_head *bh = NULL; | |
1002 | struct inode *inode = NULL; | |
1003 | ||
726c3342 | 1004 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 1005 | |
726c3342 | 1006 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
1007 | |
1008 | inode = ocfs2_get_system_file_inode(osb, | |
1009 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1010 | OCFS2_INVALID_SLOT); | |
1011 | if (!inode) { | |
1012 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1013 | status = -EIO; | |
1014 | goto bail; | |
1015 | } | |
1016 | ||
e63aecb6 | 1017 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1018 | if (status < 0) { |
1019 | mlog_errno(status); | |
1020 | goto bail; | |
1021 | } | |
1022 | ||
1023 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1024 | ||
1025 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1026 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1027 | ||
1028 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1029 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1030 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1031 | buf->f_blocks = ((sector_t) numbits) * | |
1032 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1033 | buf->f_bfree = ((sector_t) freebits) * | |
1034 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1035 | buf->f_bavail = buf->f_bfree; | |
1036 | buf->f_files = numbits; | |
1037 | buf->f_ffree = freebits; | |
1038 | ||
1039 | brelse(bh); | |
1040 | ||
e63aecb6 | 1041 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1042 | status = 0; |
1043 | bail: | |
1044 | if (inode) | |
1045 | iput(inode); | |
1046 | ||
1047 | mlog_exit(status); | |
1048 | ||
1049 | return status; | |
1050 | } | |
1051 | ||
4ba9b9d0 | 1052 | static void ocfs2_inode_init_once(struct kmem_cache *cachep, void *data) |
ccd979bd MF |
1053 | { |
1054 | struct ocfs2_inode_info *oi = data; | |
1055 | ||
a35afb83 CL |
1056 | oi->ip_flags = 0; |
1057 | oi->ip_open_count = 0; | |
1058 | spin_lock_init(&oi->ip_lock); | |
1059 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1060 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
1061 | oi->ip_created_trans = 0; | |
1062 | oi->ip_last_trans = 0; | |
1063 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 1064 | |
a35afb83 CL |
1065 | init_rwsem(&oi->ip_alloc_sem); |
1066 | mutex_init(&oi->ip_io_mutex); | |
ccd979bd | 1067 | |
a35afb83 CL |
1068 | oi->ip_blkno = 0ULL; |
1069 | oi->ip_clusters = 0; | |
ccd979bd | 1070 | |
a35afb83 | 1071 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1072 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1073 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1074 | |
a35afb83 | 1075 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 1076 | |
a35afb83 | 1077 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1078 | } |
1079 | ||
1080 | static int ocfs2_initialize_mem_caches(void) | |
1081 | { | |
1082 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1083 | sizeof(struct ocfs2_inode_info), |
1084 | 0, | |
1085 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1086 | SLAB_MEM_SPREAD), | |
20c2df83 | 1087 | ocfs2_inode_init_once); |
ccd979bd MF |
1088 | if (!ocfs2_inode_cachep) |
1089 | return -ENOMEM; | |
1090 | ||
ccd979bd MF |
1091 | return 0; |
1092 | } | |
1093 | ||
1094 | static void ocfs2_free_mem_caches(void) | |
1095 | { | |
1096 | if (ocfs2_inode_cachep) | |
1097 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd MF |
1098 | |
1099 | ocfs2_inode_cachep = NULL; | |
ccd979bd MF |
1100 | } |
1101 | ||
1102 | static int ocfs2_get_sector(struct super_block *sb, | |
1103 | struct buffer_head **bh, | |
1104 | int block, | |
1105 | int sect_size) | |
1106 | { | |
1107 | if (!sb_set_blocksize(sb, sect_size)) { | |
1108 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1109 | return -EIO; | |
1110 | } | |
1111 | ||
1112 | *bh = sb_getblk(sb, block); | |
1113 | if (!*bh) { | |
1114 | mlog_errno(-EIO); | |
1115 | return -EIO; | |
1116 | } | |
1117 | lock_buffer(*bh); | |
1118 | if (!buffer_dirty(*bh)) | |
1119 | clear_buffer_uptodate(*bh); | |
1120 | unlock_buffer(*bh); | |
1121 | ll_rw_block(READ, 1, bh); | |
1122 | wait_on_buffer(*bh); | |
1123 | return 0; | |
1124 | } | |
1125 | ||
ccd979bd MF |
1126 | static int ocfs2_mount_volume(struct super_block *sb) |
1127 | { | |
1128 | int status = 0; | |
1129 | int unlock_super = 0; | |
1130 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1131 | ||
1132 | mlog_entry_void(); | |
1133 | ||
1134 | if (ocfs2_is_hard_readonly(osb)) | |
1135 | goto leave; | |
1136 | ||
ccd979bd MF |
1137 | status = ocfs2_dlm_init(osb); |
1138 | if (status < 0) { | |
1139 | mlog_errno(status); | |
1140 | goto leave; | |
1141 | } | |
1142 | ||
ccd979bd MF |
1143 | status = ocfs2_super_lock(osb, 1); |
1144 | if (status < 0) { | |
1145 | mlog_errno(status); | |
1146 | goto leave; | |
1147 | } | |
1148 | unlock_super = 1; | |
1149 | ||
1150 | /* This will load up the node map and add ourselves to it. */ | |
1151 | status = ocfs2_find_slot(osb); | |
1152 | if (status < 0) { | |
1153 | mlog_errno(status); | |
1154 | goto leave; | |
1155 | } | |
1156 | ||
ccd979bd MF |
1157 | /* load all node-local system inodes */ |
1158 | status = ocfs2_init_local_system_inodes(osb); | |
1159 | if (status < 0) { | |
1160 | mlog_errno(status); | |
1161 | goto leave; | |
1162 | } | |
1163 | ||
1164 | status = ocfs2_check_volume(osb); | |
1165 | if (status < 0) { | |
1166 | mlog_errno(status); | |
1167 | goto leave; | |
1168 | } | |
1169 | ||
1170 | status = ocfs2_truncate_log_init(osb); | |
1171 | if (status < 0) { | |
1172 | mlog_errno(status); | |
1173 | goto leave; | |
1174 | } | |
1175 | ||
c271c5c2 SM |
1176 | if (ocfs2_mount_local(osb)) |
1177 | goto leave; | |
1178 | ||
ccd979bd MF |
1179 | leave: |
1180 | if (unlock_super) | |
1181 | ocfs2_super_unlock(osb, 1); | |
1182 | ||
1183 | mlog_exit(status); | |
1184 | return status; | |
1185 | } | |
1186 | ||
ccd979bd MF |
1187 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
1188 | { | |
1189 | int tmp; | |
1190 | struct ocfs2_super *osb = NULL; | |
c271c5c2 | 1191 | char nodestr[8]; |
ccd979bd MF |
1192 | |
1193 | mlog_entry("(0x%p)\n", sb); | |
1194 | ||
1195 | BUG_ON(!sb); | |
1196 | osb = OCFS2_SB(sb); | |
1197 | BUG_ON(!osb); | |
1198 | ||
1199 | ocfs2_shutdown_local_alloc(osb); | |
1200 | ||
1201 | ocfs2_truncate_log_shutdown(osb); | |
1202 | ||
553abd04 JB |
1203 | /* This will disable recovery and flush any recovery work. */ |
1204 | ocfs2_recovery_exit(osb); | |
ccd979bd MF |
1205 | |
1206 | ocfs2_journal_shutdown(osb); | |
1207 | ||
1208 | ocfs2_sync_blockdev(sb); | |
1209 | ||
4670c46d JB |
1210 | /* No cluster connection means we've failed during mount, so skip |
1211 | * all the steps which depended on that to complete. */ | |
1212 | if (osb->cconn) { | |
ccd979bd MF |
1213 | tmp = ocfs2_super_lock(osb, 1); |
1214 | if (tmp < 0) { | |
1215 | mlog_errno(tmp); | |
1216 | return; | |
1217 | } | |
19b613d4 | 1218 | } |
ccd979bd | 1219 | |
19b613d4 MF |
1220 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1221 | ocfs2_put_slot(osb); | |
ccd979bd | 1222 | |
4670c46d | 1223 | if (osb->cconn) |
ccd979bd | 1224 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1225 | |
1226 | ocfs2_release_system_inodes(osb); | |
1227 | ||
4670c46d | 1228 | if (osb->cconn) |
ccd979bd | 1229 | ocfs2_dlm_shutdown(osb); |
ccd979bd | 1230 | |
ccd979bd MF |
1231 | debugfs_remove(osb->osb_debug_root); |
1232 | ||
6953b4c0 JB |
1233 | /* |
1234 | * This is a small hack to move ocfs2_hb_ctl into stackglue. | |
1235 | * If we're dismounting due to mount error, mount.ocfs2 will clean | |
1236 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1237 | * If we failed before we got a uuid_str yet, we can't stop | |
1238 | * heartbeat. Otherwise, do it. | |
1239 | */ | |
1240 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) | |
1241 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); | |
ccd979bd MF |
1242 | |
1243 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1244 | ||
c271c5c2 SM |
1245 | if (ocfs2_mount_local(osb)) |
1246 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1247 | else | |
19fdb624 | 1248 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1249 | |
1250 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1251 | osb->dev_str, nodestr); | |
ccd979bd MF |
1252 | |
1253 | ocfs2_delete_osb(osb); | |
1254 | kfree(osb); | |
1255 | sb->s_dev = 0; | |
1256 | sb->s_fs_info = NULL; | |
1257 | } | |
1258 | ||
1259 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1260 | unsigned uuid_bytes) | |
1261 | { | |
1262 | int i, ret; | |
1263 | char *ptr; | |
1264 | ||
1265 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1266 | ||
cd861280 | 1267 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1268 | if (osb->uuid_str == NULL) |
1269 | return -ENOMEM; | |
1270 | ||
ccd979bd MF |
1271 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1272 | /* print with null */ | |
1273 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1274 | if (ret != 2) /* drop super cleans up */ | |
1275 | return -EINVAL; | |
1276 | /* then only advance past the last char */ | |
1277 | ptr += 2; | |
1278 | } | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | static int ocfs2_initialize_super(struct super_block *sb, | |
1284 | struct buffer_head *bh, | |
1285 | int sector_size) | |
1286 | { | |
bddb8eb3 | 1287 | int status; |
5a254031 MF |
1288 | int i, cbits, bbits; |
1289 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 1290 | struct inode *inode = NULL; |
ccd979bd MF |
1291 | struct ocfs2_journal *journal; |
1292 | __le32 uuid_net_key; | |
1293 | struct ocfs2_super *osb; | |
1294 | ||
1295 | mlog_entry_void(); | |
1296 | ||
cd861280 | 1297 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1298 | if (!osb) { |
1299 | status = -ENOMEM; | |
1300 | mlog_errno(status); | |
1301 | goto bail; | |
1302 | } | |
1303 | ||
1304 | sb->s_fs_info = osb; | |
1305 | sb->s_op = &ocfs2_sops; | |
1306 | sb->s_export_op = &ocfs2_export_ops; | |
e0dceaf0 | 1307 | sb->s_time_gran = 1; |
ccd979bd MF |
1308 | sb->s_flags |= MS_NOATIME; |
1309 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
1310 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
1311 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1312 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd MF |
1313 | |
1314 | osb->sb = sb; | |
1315 | /* Save off for ocfs2_rw_direct */ | |
1316 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1317 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 1318 | |
34d024f8 MF |
1319 | spin_lock_init(&osb->dc_task_lock); |
1320 | init_waitqueue_head(&osb->dc_event); | |
1321 | osb->dc_work_sequence = 0; | |
1322 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
1323 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
1324 | osb->blocked_lock_count = 0; | |
ccd979bd MF |
1325 | spin_lock_init(&osb->osb_lock); |
1326 | ||
1327 | atomic_set(&osb->alloc_stats.moves, 0); | |
1328 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1329 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1330 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1331 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1332 | ||
1333 | ocfs2_init_node_maps(osb); | |
1334 | ||
1335 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1336 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1337 | ||
553abd04 JB |
1338 | status = ocfs2_recovery_init(osb); |
1339 | if (status) { | |
1340 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
1341 | mlog_errno(status); | |
1342 | goto bail; | |
1343 | } | |
ccd979bd MF |
1344 | |
1345 | init_waitqueue_head(&osb->checkpoint_event); | |
1346 | atomic_set(&osb->needs_checkpoint, 0); | |
1347 | ||
7f1a37e3 TY |
1348 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1349 | ||
ccd979bd MF |
1350 | osb->slot_num = OCFS2_INVALID_SLOT; |
1351 | ||
1352 | osb->local_alloc_state = OCFS2_LA_UNUSED; | |
1353 | osb->local_alloc_bh = NULL; | |
1354 | ||
ccd979bd MF |
1355 | init_waitqueue_head(&osb->osb_mount_event); |
1356 | ||
1357 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
1358 | if (!osb->vol_label) { | |
1359 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
1360 | status = -ENOMEM; | |
1361 | goto bail; | |
1362 | } | |
1363 | ||
ccd979bd MF |
1364 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
1365 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
1366 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
1367 | osb->max_slots); | |
1368 | status = -EINVAL; | |
1369 | goto bail; | |
1370 | } | |
781ee3e2 | 1371 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 1372 | |
b4df6ed8 MF |
1373 | init_waitqueue_head(&osb->osb_wipe_event); |
1374 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
1375 | sizeof(*osb->osb_orphan_wipes), | |
1376 | GFP_KERNEL); | |
1377 | if (!osb->osb_orphan_wipes) { | |
1378 | status = -ENOMEM; | |
1379 | mlog_errno(status); | |
1380 | goto bail; | |
1381 | } | |
1382 | ||
ccd979bd MF |
1383 | osb->s_feature_compat = |
1384 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
1385 | osb->s_feature_ro_compat = | |
1386 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
1387 | osb->s_feature_incompat = | |
1388 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
1389 | ||
1390 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
1391 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
1392 | "optional features (%x).\n", i); | |
1393 | status = -EINVAL; | |
1394 | goto bail; | |
1395 | } | |
1396 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
1397 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
1398 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
1399 | "unsupported optional features (%x).\n", i); | |
1400 | status = -EINVAL; | |
1401 | goto bail; | |
1402 | } | |
1403 | ||
1404 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); | |
1405 | ||
1406 | /* FIXME | |
1407 | * This should be done in ocfs2_journal_init(), but unknown | |
1408 | * ordering issues will cause the filesystem to crash. | |
1409 | * If anyone wants to figure out what part of the code | |
1410 | * refers to osb->journal before ocfs2_journal_init() is run, | |
1411 | * be my guest. | |
1412 | */ | |
1413 | /* initialize our journal structure */ | |
1414 | ||
cd861280 | 1415 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
1416 | if (!journal) { |
1417 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
1418 | status = -ENOMEM; | |
1419 | goto bail; | |
1420 | } | |
1421 | osb->journal = journal; | |
1422 | journal->j_osb = osb; | |
1423 | ||
1424 | atomic_set(&journal->j_num_trans, 0); | |
1425 | init_rwsem(&journal->j_trans_barrier); | |
1426 | init_waitqueue_head(&journal->j_checkpointed); | |
1427 | spin_lock_init(&journal->j_lock); | |
1428 | journal->j_trans_id = (unsigned long) 1; | |
1429 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 1430 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
1431 | journal->j_state = OCFS2_JOURNAL_FREE; |
1432 | ||
1433 | /* get some pseudo constants for clustersize bits */ | |
1434 | osb->s_clustersize_bits = | |
1435 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
1436 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
1437 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
1438 | ||
1439 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
1440 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
1441 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
1442 | osb->s_clustersize); | |
1443 | status = -EINVAL; | |
1444 | goto bail; | |
1445 | } | |
1446 | ||
1447 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
1448 | > (u32)~0UL) { | |
1449 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
1450 | "what jbd can address in 32 bits.\n"); | |
1451 | status = -EINVAL; | |
1452 | goto bail; | |
1453 | } | |
1454 | ||
1455 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
1456 | sizeof(di->id2.i_super.s_uuid))) { | |
1457 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
1458 | status = -ENOMEM; | |
1459 | goto bail; | |
1460 | } | |
1461 | ||
78427043 | 1462 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
1463 | |
1464 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
1465 | osb->vol_label[63] = '\0'; | |
1466 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
1467 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
1468 | osb->first_cluster_group_blkno = | |
1469 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
1470 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
1471 | mlog(0, "vol_label: %s\n", osb->vol_label); | |
1472 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
1473 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
1474 | (unsigned long long)osb->root_blkno, | |
1475 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
1476 | |
1477 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
1478 | if (!osb->osb_dlm_debug) { | |
1479 | status = -ENOMEM; | |
1480 | mlog_errno(status); | |
1481 | goto bail; | |
1482 | } | |
1483 | ||
1484 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
1485 | ||
1486 | /* load root, system_dir, and all global system inodes */ | |
1487 | status = ocfs2_init_global_system_inodes(osb); | |
1488 | if (status < 0) { | |
1489 | mlog_errno(status); | |
1490 | goto bail; | |
1491 | } | |
1492 | ||
1493 | /* | |
1494 | * global bitmap | |
1495 | */ | |
1496 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
1497 | OCFS2_INVALID_SLOT); | |
1498 | if (!inode) { | |
1499 | status = -EINVAL; | |
1500 | mlog_errno(status); | |
1501 | goto bail; | |
1502 | } | |
1503 | ||
1504 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
ccd979bd | 1505 | iput(inode); |
ccd979bd | 1506 | |
e9d578a8 | 1507 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; |
ccd979bd MF |
1508 | |
1509 | status = ocfs2_init_slot_info(osb); | |
1510 | if (status < 0) { | |
1511 | mlog_errno(status); | |
1512 | goto bail; | |
1513 | } | |
1514 | ||
ccd979bd MF |
1515 | bail: |
1516 | mlog_exit(status); | |
1517 | return status; | |
1518 | } | |
1519 | ||
1520 | /* | |
1521 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
1522 | * -EINVAL if there is a bad superblock | |
1523 | * 0 on success | |
1524 | */ | |
1525 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
1526 | struct buffer_head *bh, | |
1527 | u32 blksz) | |
1528 | { | |
1529 | int status = -EAGAIN; | |
1530 | ||
1531 | mlog_entry_void(); | |
1532 | ||
1533 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
1534 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
1535 | status = -EINVAL; | |
1536 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
1537 | mlog(ML_ERROR, "found superblock with incorrect block " | |
1538 | "size: found %u, should be %u\n", | |
1539 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
1540 | blksz); | |
1541 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
1542 | OCFS2_MAJOR_REV_LEVEL || | |
1543 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
1544 | OCFS2_MINOR_REV_LEVEL) { | |
1545 | mlog(ML_ERROR, "found superblock with bad version: " | |
1546 | "found %u.%u, should be %u.%u\n", | |
1547 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
1548 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
1549 | OCFS2_MAJOR_REV_LEVEL, | |
1550 | OCFS2_MINOR_REV_LEVEL); | |
1551 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
1552 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 1553 | "found %llu, should be %llu\n", |
1ca1a111 | 1554 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 1555 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
1556 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
1557 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
1558 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
1559 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
1560 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
1561 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
1562 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
1563 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
1564 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
1565 | mlog(ML_ERROR, | |
1566 | "Superblock slots found greater than file system " | |
1567 | "maximum: found %u, max %u\n", | |
1568 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
1569 | OCFS2_MAX_SLOTS); | |
1570 | } else { | |
1571 | /* found it! */ | |
1572 | status = 0; | |
1573 | } | |
1574 | } | |
1575 | ||
1576 | mlog_exit(status); | |
1577 | return status; | |
1578 | } | |
1579 | ||
1580 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
1581 | { | |
bddb8eb3 | 1582 | int status; |
ccd979bd | 1583 | int dirty; |
c271c5c2 | 1584 | int local; |
ccd979bd MF |
1585 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
1586 | * recover | |
1587 | * ourselves. */ | |
1588 | ||
1589 | mlog_entry_void(); | |
1590 | ||
1591 | /* Init our journal object. */ | |
1592 | status = ocfs2_journal_init(osb->journal, &dirty); | |
1593 | if (status < 0) { | |
1594 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
1595 | goto finally; | |
1596 | } | |
1597 | ||
1598 | /* If the journal was unmounted cleanly then we don't want to | |
1599 | * recover anything. Otherwise, journal_load will do that | |
1600 | * dirty work for us :) */ | |
1601 | if (!dirty) { | |
1602 | status = ocfs2_journal_wipe(osb->journal, 0); | |
1603 | if (status < 0) { | |
1604 | mlog_errno(status); | |
1605 | goto finally; | |
1606 | } | |
1607 | } else { | |
1608 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
1609 | "recovering volume.\n"); | |
1610 | } | |
1611 | ||
c271c5c2 SM |
1612 | local = ocfs2_mount_local(osb); |
1613 | ||
ccd979bd | 1614 | /* will play back anything left in the journal. */ |
c271c5c2 | 1615 | ocfs2_journal_load(osb->journal, local); |
ccd979bd MF |
1616 | |
1617 | if (dirty) { | |
1618 | /* recover my local alloc if we didn't unmount cleanly. */ | |
1619 | status = ocfs2_begin_local_alloc_recovery(osb, | |
1620 | osb->slot_num, | |
1621 | &local_alloc); | |
1622 | if (status < 0) { | |
1623 | mlog_errno(status); | |
1624 | goto finally; | |
1625 | } | |
1626 | /* we complete the recovery process after we've marked | |
1627 | * ourselves as mounted. */ | |
1628 | } | |
1629 | ||
1630 | mlog(0, "Journal loaded.\n"); | |
1631 | ||
1632 | status = ocfs2_load_local_alloc(osb); | |
1633 | if (status < 0) { | |
1634 | mlog_errno(status); | |
1635 | goto finally; | |
1636 | } | |
1637 | ||
1638 | if (dirty) { | |
1639 | /* Recovery will be completed after we've mounted the | |
1640 | * rest of the volume. */ | |
1641 | osb->dirty = 1; | |
1642 | osb->local_alloc_copy = local_alloc; | |
1643 | local_alloc = NULL; | |
1644 | } | |
1645 | ||
1646 | /* go through each journal, trylock it and if you get the | |
1647 | * lock, and it's marked as dirty, set the bit in the recover | |
1648 | * map and launch a recovery thread for it. */ | |
1649 | status = ocfs2_mark_dead_nodes(osb); | |
1650 | if (status < 0) | |
1651 | mlog_errno(status); | |
1652 | ||
1653 | finally: | |
1654 | if (local_alloc) | |
1655 | kfree(local_alloc); | |
1656 | ||
1657 | mlog_exit(status); | |
1658 | return status; | |
1659 | } | |
1660 | ||
1661 | /* | |
1662 | * The routine gets called from dismount or close whenever a dismount on | |
1663 | * volume is requested and the osb open count becomes 1. | |
1664 | * It will remove the osb from the global list and also free up all the | |
1665 | * initialized resources and fileobject. | |
1666 | */ | |
1667 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
1668 | { | |
1669 | mlog_entry_void(); | |
1670 | ||
1671 | /* This function assumes that the caller has the main osb resource */ | |
1672 | ||
8e8a4603 | 1673 | ocfs2_free_slot_info(osb); |
ccd979bd | 1674 | |
b4df6ed8 | 1675 | kfree(osb->osb_orphan_wipes); |
ccd979bd MF |
1676 | /* FIXME |
1677 | * This belongs in journal shutdown, but because we have to | |
1678 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
1679 | * we free it here. | |
1680 | */ | |
1681 | kfree(osb->journal); | |
1682 | if (osb->local_alloc_copy) | |
1683 | kfree(osb->local_alloc_copy); | |
1684 | kfree(osb->uuid_str); | |
1685 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
1686 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
1687 | ||
1688 | mlog_exit_void(); | |
1689 | } | |
1690 | ||
1691 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
1692 | * panic(). We do not support continue-on-error operation. */ | |
1693 | static void ocfs2_handle_error(struct super_block *sb) | |
1694 | { | |
1695 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1696 | ||
1697 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
1698 | panic("OCFS2: (device %s): panic forced after error\n", | |
1699 | sb->s_id); | |
1700 | ||
1701 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
1702 | ||
1703 | if (sb->s_flags & MS_RDONLY && | |
1704 | (ocfs2_is_soft_readonly(osb) || | |
1705 | ocfs2_is_hard_readonly(osb))) | |
1706 | return; | |
1707 | ||
1708 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
1709 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
1710 | "system is unmounted.\n"); | |
1711 | sb->s_flags |= MS_RDONLY; | |
1712 | ocfs2_set_ro_flag(osb, 0); | |
1713 | } | |
1714 | ||
1715 | static char error_buf[1024]; | |
1716 | ||
1717 | void __ocfs2_error(struct super_block *sb, | |
1718 | const char *function, | |
1719 | const char *fmt, ...) | |
1720 | { | |
1721 | va_list args; | |
1722 | ||
1723 | va_start(args, fmt); | |
4a6e617a | 1724 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1725 | va_end(args); |
1726 | ||
1727 | /* Not using mlog here because we want to show the actual | |
1728 | * function the error came from. */ | |
1729 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
1730 | sb->s_id, function, error_buf); | |
1731 | ||
1732 | ocfs2_handle_error(sb); | |
1733 | } | |
1734 | ||
1735 | /* Handle critical errors. This is intentionally more drastic than | |
1736 | * ocfs2_handle_error, so we only use for things like journal errors, | |
1737 | * etc. */ | |
1738 | void __ocfs2_abort(struct super_block* sb, | |
1739 | const char *function, | |
1740 | const char *fmt, ...) | |
1741 | { | |
1742 | va_list args; | |
1743 | ||
1744 | va_start(args, fmt); | |
4a6e617a | 1745 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1746 | va_end(args); |
1747 | ||
1748 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
1749 | sb->s_id, function, error_buf); | |
1750 | ||
1751 | /* We don't have the cluster support yet to go straight to | |
1752 | * hard readonly in here. Until then, we want to keep | |
1753 | * ocfs2_abort() so that we can at least mark critical | |
1754 | * errors. | |
1755 | * | |
1756 | * TODO: This should abort the journal and alert other nodes | |
1757 | * that our slot needs recovery. */ | |
1758 | ||
1759 | /* Force a panic(). This stinks, but it's better than letting | |
1760 | * things continue without having a proper hard readonly | |
1761 | * here. */ | |
1762 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
1763 | ocfs2_handle_error(sb); | |
1764 | } | |
1765 | ||
1766 | module_init(ocfs2_init); | |
1767 | module_exit(ocfs2_exit); |