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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> | |
42 | ||
43 | #include <cluster/nodemanager.h> | |
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" | |
67 | #include "vote.h" | |
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 | { | |
86 | unsigned long mount_opt; | |
87 | unsigned int atime_quantum; | |
88 | signed short slot; | |
89 | }; | |
90 | ||
ccd979bd | 91 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 92 | struct mount_options *mopt, |
baf4661a | 93 | int is_remount); |
ccd979bd MF |
94 | static void ocfs2_put_super(struct super_block *sb); |
95 | static int ocfs2_mount_volume(struct super_block *sb); | |
96 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
97 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
98 | static int ocfs2_initialize_mem_caches(void); | |
99 | static void ocfs2_free_mem_caches(void); | |
100 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
101 | ||
726c3342 | 102 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
103 | |
104 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
105 | ||
106 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
107 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
108 | static int ocfs2_release_system_inodes(struct ocfs2_super *osb); | |
109 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb); | |
110 | static int ocfs2_check_volume(struct ocfs2_super *osb); | |
111 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
112 | struct buffer_head *bh, | |
113 | u32 sectsize); | |
114 | static int ocfs2_initialize_super(struct super_block *sb, | |
115 | struct buffer_head *bh, | |
116 | int sector_size); | |
117 | static int ocfs2_get_sector(struct super_block *sb, | |
118 | struct buffer_head **bh, | |
119 | int block, | |
120 | int sect_size); | |
121 | static void ocfs2_write_super(struct super_block *sb); | |
122 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
123 | static void ocfs2_destroy_inode(struct inode *inode); | |
124 | ||
ee9b6d61 | 125 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
126 | .statfs = ocfs2_statfs, |
127 | .alloc_inode = ocfs2_alloc_inode, | |
128 | .destroy_inode = ocfs2_destroy_inode, | |
129 | .drop_inode = ocfs2_drop_inode, | |
130 | .clear_inode = ocfs2_clear_inode, | |
131 | .delete_inode = ocfs2_delete_inode, | |
132 | .sync_fs = ocfs2_sync_fs, | |
133 | .write_super = ocfs2_write_super, | |
134 | .put_super = ocfs2_put_super, | |
135 | .remount_fs = ocfs2_remount, | |
136 | }; | |
137 | ||
138 | enum { | |
139 | Opt_barrier, | |
140 | Opt_err_panic, | |
141 | Opt_err_ro, | |
142 | Opt_intr, | |
143 | Opt_nointr, | |
144 | Opt_hb_none, | |
145 | Opt_hb_local, | |
146 | Opt_data_ordered, | |
147 | Opt_data_writeback, | |
7f1a37e3 | 148 | Opt_atime_quantum, |
baf4661a | 149 | Opt_slot, |
ccd979bd MF |
150 | Opt_err, |
151 | }; | |
152 | ||
153 | static match_table_t tokens = { | |
154 | {Opt_barrier, "barrier=%u"}, | |
155 | {Opt_err_panic, "errors=panic"}, | |
156 | {Opt_err_ro, "errors=remount-ro"}, | |
157 | {Opt_intr, "intr"}, | |
158 | {Opt_nointr, "nointr"}, | |
159 | {Opt_hb_none, OCFS2_HB_NONE}, | |
160 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
161 | {Opt_data_ordered, "data=ordered"}, | |
162 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 163 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 164 | {Opt_slot, "preferred_slot=%u"}, |
ccd979bd MF |
165 | {Opt_err, NULL} |
166 | }; | |
167 | ||
168 | /* | |
169 | * write_super and sync_fs ripped right out of ext3. | |
170 | */ | |
171 | static void ocfs2_write_super(struct super_block *sb) | |
172 | { | |
7892f2f4 | 173 | if (mutex_trylock(&sb->s_lock) != 0) |
ccd979bd MF |
174 | BUG(); |
175 | sb->s_dirt = 0; | |
176 | } | |
177 | ||
178 | static int ocfs2_sync_fs(struct super_block *sb, int wait) | |
179 | { | |
180 | int status = 0; | |
181 | tid_t target; | |
182 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
183 | ||
184 | sb->s_dirt = 0; | |
185 | ||
186 | if (ocfs2_is_hard_readonly(osb)) | |
187 | return -EROFS; | |
188 | ||
189 | if (wait) { | |
190 | status = ocfs2_flush_truncate_log(osb); | |
191 | if (status < 0) | |
192 | mlog_errno(status); | |
193 | } else { | |
194 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
195 | } | |
196 | ||
197 | if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { | |
198 | if (wait) | |
199 | log_wait_commit(OCFS2_SB(sb)->journal->j_journal, | |
200 | target); | |
201 | } | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) | |
206 | { | |
207 | struct inode *new = NULL; | |
208 | int status = 0; | |
209 | int i; | |
210 | ||
211 | mlog_entry_void(); | |
212 | ||
24c19ef4 | 213 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE); |
ccd979bd MF |
214 | if (IS_ERR(new)) { |
215 | status = PTR_ERR(new); | |
216 | mlog_errno(status); | |
217 | goto bail; | |
218 | } | |
219 | osb->root_inode = new; | |
220 | ||
24c19ef4 | 221 | new = ocfs2_iget(osb, osb->system_dir_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->sys_root_inode = new; | |
228 | ||
229 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
230 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
231 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
232 | if (!new) { | |
233 | ocfs2_release_system_inodes(osb); | |
234 | status = -EINVAL; | |
235 | mlog_errno(status); | |
236 | /* FIXME: Should ERROR_RO_FS */ | |
237 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
238 | "possibly corrupt fs?", i); | |
239 | goto bail; | |
240 | } | |
241 | // the array now has one ref, so drop this one | |
242 | iput(new); | |
243 | } | |
244 | ||
245 | bail: | |
246 | mlog_exit(status); | |
247 | return status; | |
248 | } | |
249 | ||
250 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
251 | { | |
252 | struct inode *new = NULL; | |
253 | int status = 0; | |
254 | int i; | |
255 | ||
256 | mlog_entry_void(); | |
257 | ||
258 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
259 | i < NUM_SYSTEM_INODES; | |
260 | i++) { | |
261 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
262 | if (!new) { | |
263 | ocfs2_release_system_inodes(osb); | |
264 | status = -EINVAL; | |
265 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
266 | status, i, osb->slot_num); | |
267 | goto bail; | |
268 | } | |
269 | /* the array now has one ref, so drop this one */ | |
270 | iput(new); | |
271 | } | |
272 | ||
273 | bail: | |
274 | mlog_exit(status); | |
275 | return status; | |
276 | } | |
277 | ||
278 | static int ocfs2_release_system_inodes(struct ocfs2_super *osb) | |
279 | { | |
280 | int status = 0, i; | |
281 | struct inode *inode; | |
282 | ||
283 | mlog_entry_void(); | |
284 | ||
285 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
286 | inode = osb->system_inodes[i]; | |
287 | if (inode) { | |
288 | iput(inode); | |
289 | osb->system_inodes[i] = NULL; | |
290 | } | |
291 | } | |
292 | ||
293 | inode = osb->sys_root_inode; | |
294 | if (inode) { | |
295 | iput(inode); | |
296 | osb->sys_root_inode = NULL; | |
297 | } | |
298 | ||
299 | inode = osb->root_inode; | |
300 | if (inode) { | |
301 | iput(inode); | |
302 | osb->root_inode = NULL; | |
303 | } | |
304 | ||
305 | mlog_exit(status); | |
306 | return status; | |
307 | } | |
308 | ||
309 | /* We're allocating fs objects, use GFP_NOFS */ | |
310 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
311 | { | |
312 | struct ocfs2_inode_info *oi; | |
313 | ||
e6b4f8da | 314 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
315 | if (!oi) |
316 | return NULL; | |
317 | ||
318 | return &oi->vfs_inode; | |
319 | } | |
320 | ||
321 | static void ocfs2_destroy_inode(struct inode *inode) | |
322 | { | |
323 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
324 | } | |
325 | ||
5a254031 MF |
326 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
327 | unsigned int cbits) | |
ccd979bd | 328 | { |
5a254031 MF |
329 | unsigned int bytes = 1 << cbits; |
330 | unsigned int trim = bytes; | |
331 | unsigned int bitshift = 32; | |
332 | ||
333 | /* | |
334 | * i_size and all block offsets in ocfs2 are always 64 bits | |
335 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
336 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
337 | */ |
338 | ||
339 | #if BITS_PER_LONG == 32 | |
340 | # if defined(CONFIG_LBD) | |
2ecd05ae | 341 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
342 | /* |
343 | * We might be limited by page cache size. | |
344 | */ | |
345 | if (bytes > PAGE_CACHE_SIZE) { | |
346 | bytes = PAGE_CACHE_SIZE; | |
347 | trim = 1; | |
348 | /* | |
349 | * Shift by 31 here so that we don't get larger than | |
350 | * MAX_LFS_FILESIZE | |
351 | */ | |
352 | bitshift = 31; | |
353 | } | |
ccd979bd | 354 | # else |
5a254031 MF |
355 | /* |
356 | * We are limited by the size of sector_t. Use block size, as | |
357 | * that's what we expose to the VFS. | |
358 | */ | |
359 | bytes = 1 << bbits; | |
360 | trim = 1; | |
361 | bitshift = 31; | |
ccd979bd MF |
362 | # endif |
363 | #endif | |
364 | ||
5a254031 MF |
365 | /* |
366 | * Trim by a whole cluster when we can actually approach the | |
367 | * on-disk limits. Otherwise we can overflow i_clusters when | |
368 | * an extent start is at the max offset. | |
369 | */ | |
370 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
371 | } |
372 | ||
373 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
374 | { | |
375 | int incompat_features; | |
376 | int ret = 0; | |
c0123ade | 377 | struct mount_options parsed_options; |
ccd979bd MF |
378 | struct ocfs2_super *osb = OCFS2_SB(sb); |
379 | ||
c0123ade | 380 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { |
ccd979bd MF |
381 | ret = -EINVAL; |
382 | goto out; | |
383 | } | |
384 | ||
385 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
c0123ade | 386 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
ccd979bd MF |
387 | ret = -EINVAL; |
388 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
389 | goto out; | |
390 | } | |
391 | ||
392 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 393 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
394 | ret = -EINVAL; |
395 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
396 | goto out; | |
397 | } | |
398 | ||
399 | /* We're going to/from readonly mode. */ | |
400 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
401 | /* Lock here so the check of HARD_RO and the potential | |
402 | * setting of SOFT_RO is atomic. */ | |
403 | spin_lock(&osb->osb_lock); | |
404 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
405 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
406 | ret = -EROFS; | |
407 | goto unlock_osb; | |
408 | } | |
409 | ||
410 | if (*flags & MS_RDONLY) { | |
411 | mlog(0, "Going to ro mode.\n"); | |
412 | sb->s_flags |= MS_RDONLY; | |
413 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
414 | } else { | |
415 | mlog(0, "Making ro filesystem writeable.\n"); | |
416 | ||
417 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
418 | mlog(ML_ERROR, "Cannot remount RDWR " | |
419 | "filesystem due to previous errors.\n"); | |
420 | ret = -EROFS; | |
421 | goto unlock_osb; | |
422 | } | |
423 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
424 | if (incompat_features) { | |
425 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
426 | "of unsupported optional features " | |
427 | "(%x).\n", incompat_features); | |
428 | ret = -EINVAL; | |
429 | goto unlock_osb; | |
430 | } | |
431 | sb->s_flags &= ~MS_RDONLY; | |
432 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
433 | } | |
434 | unlock_osb: | |
435 | spin_unlock(&osb->osb_lock); | |
436 | } | |
437 | ||
438 | if (!ret) { | |
439 | if (!ocfs2_is_hard_readonly(osb)) | |
440 | ocfs2_set_journal_params(osb); | |
441 | ||
442 | /* Only save off the new mount options in case of a successful | |
443 | * remount. */ | |
c0123ade TY |
444 | osb->s_mount_opt = parsed_options.mount_opt; |
445 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
446 | osb->preferred_slot = parsed_options.slot; | |
ccd979bd MF |
447 | } |
448 | out: | |
449 | return ret; | |
450 | } | |
451 | ||
452 | static int ocfs2_sb_probe(struct super_block *sb, | |
453 | struct buffer_head **bh, | |
454 | int *sector_size) | |
455 | { | |
456 | int status = 0, tmpstat; | |
457 | struct ocfs1_vol_disk_hdr *hdr; | |
458 | struct ocfs2_dinode *di; | |
459 | int blksize; | |
460 | ||
461 | *bh = NULL; | |
462 | ||
463 | /* may be > 512 */ | |
464 | *sector_size = bdev_hardsect_size(sb->s_bdev); | |
465 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { | |
466 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
467 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
468 | status = -EINVAL; | |
469 | goto bail; | |
470 | } | |
471 | ||
472 | /* Can this really happen? */ | |
473 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
474 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
475 | ||
476 | /* check block zero for old format */ | |
477 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
478 | if (status < 0) { | |
479 | mlog_errno(status); | |
480 | goto bail; | |
481 | } | |
482 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
483 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
484 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
485 | hdr->major_version, hdr->minor_version); | |
486 | status = -EINVAL; | |
487 | } | |
488 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
489 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
490 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
491 | hdr->signature); | |
492 | status = -EINVAL; | |
493 | } | |
494 | brelse(*bh); | |
495 | *bh = NULL; | |
496 | if (status < 0) { | |
497 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
498 | "upgraded before mounting with ocfs v2\n"); | |
499 | goto bail; | |
500 | } | |
501 | ||
502 | /* | |
503 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
504 | * blocksizes. 4096 is the maximum blocksize because it is | |
505 | * the minimum clustersize. | |
506 | */ | |
507 | status = -EINVAL; | |
508 | for (blksize = *sector_size; | |
509 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
510 | blksize <<= 1) { | |
511 | tmpstat = ocfs2_get_sector(sb, bh, | |
512 | OCFS2_SUPER_BLOCK_BLKNO, | |
513 | blksize); | |
514 | if (tmpstat < 0) { | |
515 | status = tmpstat; | |
516 | mlog_errno(status); | |
517 | goto bail; | |
518 | } | |
519 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
520 | status = ocfs2_verify_volume(di, *bh, blksize); | |
521 | if (status >= 0) | |
522 | goto bail; | |
523 | brelse(*bh); | |
524 | *bh = NULL; | |
525 | if (status != -EAGAIN) | |
526 | break; | |
527 | } | |
528 | ||
529 | bail: | |
530 | return status; | |
531 | } | |
532 | ||
c271c5c2 SM |
533 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
534 | { | |
535 | if (ocfs2_mount_local(osb)) { | |
536 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
537 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
538 | "mounted device.\n"); | |
539 | return -EINVAL; | |
540 | } | |
541 | } | |
542 | ||
543 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { | |
544 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb)) { | |
545 | mlog(ML_ERROR, "Heartbeat has to be started to mount " | |
546 | "a read-write clustered device.\n"); | |
547 | return -EINVAL; | |
548 | } | |
549 | } | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
ccd979bd MF |
554 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
555 | { | |
556 | struct dentry *root; | |
557 | int status, sector_size; | |
c0123ade | 558 | struct mount_options parsed_options; |
ccd979bd MF |
559 | struct inode *inode = NULL; |
560 | struct ocfs2_super *osb = NULL; | |
561 | struct buffer_head *bh = NULL; | |
c271c5c2 | 562 | char nodestr[8]; |
ccd979bd MF |
563 | |
564 | mlog_entry("%p, %p, %i", sb, data, silent); | |
565 | ||
c0123ade | 566 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
567 | status = -EINVAL; |
568 | goto read_super_error; | |
569 | } | |
570 | ||
c271c5c2 SM |
571 | /* for now we only have one cluster/node, make sure we see it |
572 | * in the heartbeat universe */ | |
c0123ade | 573 | if (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL) { |
c271c5c2 SM |
574 | if (!o2hb_check_local_node_heartbeating()) { |
575 | status = -EINVAL; | |
576 | goto read_super_error; | |
577 | } | |
578 | } | |
579 | ||
ccd979bd MF |
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; | |
ccd979bd MF |
598 | |
599 | sb->s_magic = OCFS2_SUPER_MAGIC; | |
600 | ||
601 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, | |
602 | * heartbeat=none */ | |
603 | if (bdev_read_only(sb->s_bdev)) { | |
604 | if (!(sb->s_flags & MS_RDONLY)) { | |
605 | status = -EACCES; | |
606 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
607 | "mount was not specified.\n"); | |
608 | goto read_super_error; | |
609 | } | |
610 | ||
611 | /* You should not be able to start a local heartbeat | |
612 | * on a readonly device. */ | |
613 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
614 | status = -EROFS; | |
615 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
616 | "device.\n"); | |
617 | goto read_super_error; | |
618 | } | |
619 | ||
620 | status = ocfs2_check_journals_nolocks(osb); | |
621 | if (status < 0) { | |
622 | if (status == -EROFS) | |
623 | mlog(ML_ERROR, "Recovery required on readonly " | |
624 | "file system, but write access is " | |
625 | "unavailable.\n"); | |
626 | else | |
627 | mlog_errno(status); | |
628 | goto read_super_error; | |
629 | } | |
630 | ||
631 | ocfs2_set_ro_flag(osb, 1); | |
632 | ||
633 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
634 | "services will be utilized for this mount. Recovery " | |
635 | "will be skipped.\n"); | |
636 | } | |
637 | ||
638 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
639 | if (sb->s_flags & MS_RDONLY) |
640 | ocfs2_set_ro_flag(osb, 0); | |
641 | } | |
642 | ||
c271c5c2 SM |
643 | status = ocfs2_verify_heartbeat(osb); |
644 | if (status < 0) { | |
645 | mlog_errno(status); | |
646 | goto read_super_error; | |
647 | } | |
648 | ||
ccd979bd MF |
649 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
650 | ocfs2_debugfs_root); | |
651 | if (!osb->osb_debug_root) { | |
652 | status = -EINVAL; | |
653 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
654 | goto read_super_error; | |
655 | } | |
656 | ||
657 | status = ocfs2_mount_volume(sb); | |
658 | if (osb->root_inode) | |
659 | inode = igrab(osb->root_inode); | |
660 | ||
661 | if (status < 0) | |
662 | goto read_super_error; | |
663 | ||
664 | if (!inode) { | |
665 | status = -EIO; | |
666 | mlog_errno(status); | |
667 | goto read_super_error; | |
668 | } | |
669 | ||
670 | root = d_alloc_root(inode); | |
671 | if (!root) { | |
672 | status = -ENOMEM; | |
673 | mlog_errno(status); | |
674 | goto read_super_error; | |
675 | } | |
676 | ||
677 | sb->s_root = root; | |
678 | ||
679 | ocfs2_complete_mount_recovery(osb); | |
680 | ||
c271c5c2 SM |
681 | if (ocfs2_mount_local(osb)) |
682 | snprintf(nodestr, sizeof(nodestr), "local"); | |
683 | else | |
684 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
685 | ||
686 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 687 | "with %s data mode.\n", |
c271c5c2 | 688 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
689 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
690 | "ordered"); | |
691 | ||
692 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
693 | wake_up(&osb->osb_mount_event); | |
694 | ||
695 | mlog_exit(status); | |
696 | return status; | |
697 | ||
698 | read_super_error: | |
699 | if (bh != NULL) | |
700 | brelse(bh); | |
701 | ||
702 | if (inode) | |
703 | iput(inode); | |
704 | ||
705 | if (osb) { | |
706 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
707 | wake_up(&osb->osb_mount_event); | |
708 | ocfs2_dismount_volume(sb, 1); | |
709 | } | |
710 | ||
711 | mlog_exit(status); | |
712 | return status; | |
713 | } | |
714 | ||
454e2398 DH |
715 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
716 | int flags, | |
717 | const char *dev_name, | |
718 | void *data, | |
719 | struct vfsmount *mnt) | |
ccd979bd | 720 | { |
454e2398 DH |
721 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
722 | mnt); | |
ccd979bd MF |
723 | } |
724 | ||
725 | static struct file_system_type ocfs2_fs_type = { | |
726 | .owner = THIS_MODULE, | |
727 | .name = "ocfs2", | |
728 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
729 | * the fs? */ | |
730 | .kill_sb = kill_block_super, /* set to the generic one | |
731 | * right now, but do we | |
732 | * need to change that? */ | |
1ba9da2f | 733 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
734 | .next = NULL |
735 | }; | |
736 | ||
737 | static int ocfs2_parse_options(struct super_block *sb, | |
738 | char *options, | |
c0123ade | 739 | struct mount_options *mopt, |
ccd979bd MF |
740 | int is_remount) |
741 | { | |
742 | int status; | |
743 | char *p; | |
744 | ||
745 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
746 | options ? options : "(none)"); | |
747 | ||
c0123ade TY |
748 | mopt->mount_opt = 0; |
749 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
750 | mopt->slot = OCFS2_INVALID_SLOT; | |
ccd979bd MF |
751 | |
752 | if (!options) { | |
753 | status = 1; | |
754 | goto bail; | |
755 | } | |
756 | ||
757 | while ((p = strsep(&options, ",")) != NULL) { | |
758 | int token, option; | |
759 | substring_t args[MAX_OPT_ARGS]; | |
760 | ||
761 | if (!*p) | |
762 | continue; | |
763 | ||
764 | token = match_token(p, tokens, args); | |
765 | switch (token) { | |
766 | case Opt_hb_local: | |
c0123ade | 767 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
768 | break; |
769 | case Opt_hb_none: | |
c0123ade | 770 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
771 | break; |
772 | case Opt_barrier: | |
773 | if (match_int(&args[0], &option)) { | |
774 | status = 0; | |
775 | goto bail; | |
776 | } | |
777 | if (option) | |
c0123ade | 778 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 779 | else |
c0123ade | 780 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
781 | break; |
782 | case Opt_intr: | |
c0123ade | 783 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
784 | break; |
785 | case Opt_nointr: | |
c0123ade | 786 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
787 | break; |
788 | case Opt_err_panic: | |
c0123ade | 789 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
790 | break; |
791 | case Opt_err_ro: | |
c0123ade | 792 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
793 | break; |
794 | case Opt_data_ordered: | |
c0123ade | 795 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
796 | break; |
797 | case Opt_data_writeback: | |
c0123ade | 798 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 799 | break; |
7f1a37e3 TY |
800 | case Opt_atime_quantum: |
801 | if (match_int(&args[0], &option)) { | |
802 | status = 0; | |
803 | goto bail; | |
804 | } | |
805 | if (option >= 0) | |
c0123ade | 806 | mopt->atime_quantum = option; |
7f1a37e3 | 807 | break; |
baf4661a SM |
808 | case Opt_slot: |
809 | option = 0; | |
810 | if (match_int(&args[0], &option)) { | |
811 | status = 0; | |
812 | goto bail; | |
813 | } | |
814 | if (option) | |
c0123ade | 815 | mopt->slot = (s16)option; |
baf4661a | 816 | break; |
ccd979bd MF |
817 | default: |
818 | mlog(ML_ERROR, | |
819 | "Unrecognized mount option \"%s\" " | |
820 | "or missing value\n", p); | |
821 | status = 0; | |
822 | goto bail; | |
823 | } | |
824 | } | |
825 | ||
826 | status = 1; | |
827 | ||
828 | bail: | |
829 | mlog_exit(status); | |
830 | return status; | |
831 | } | |
832 | ||
833 | static int __init ocfs2_init(void) | |
834 | { | |
835 | int status; | |
836 | ||
837 | mlog_entry_void(); | |
838 | ||
839 | ocfs2_print_version(); | |
840 | ||
ccd979bd MF |
841 | status = init_ocfs2_uptodate_cache(); |
842 | if (status < 0) { | |
843 | mlog_errno(status); | |
844 | goto leave; | |
845 | } | |
846 | ||
847 | status = ocfs2_initialize_mem_caches(); | |
848 | if (status < 0) { | |
849 | mlog_errno(status); | |
850 | goto leave; | |
851 | } | |
852 | ||
853 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
854 | if (!ocfs2_wq) { | |
855 | status = -ENOMEM; | |
856 | goto leave; | |
857 | } | |
858 | ||
ccd979bd MF |
859 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
860 | if (!ocfs2_debugfs_root) { | |
861 | status = -EFAULT; | |
862 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
863 | } | |
864 | ||
865 | leave: | |
866 | if (status < 0) { | |
867 | ocfs2_free_mem_caches(); | |
868 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
869 | } |
870 | ||
871 | mlog_exit(status); | |
872 | ||
873 | if (status >= 0) { | |
874 | return register_filesystem(&ocfs2_fs_type); | |
875 | } else | |
876 | return -1; | |
877 | } | |
878 | ||
879 | static void __exit ocfs2_exit(void) | |
880 | { | |
881 | mlog_entry_void(); | |
882 | ||
883 | if (ocfs2_wq) { | |
884 | flush_workqueue(ocfs2_wq); | |
885 | destroy_workqueue(ocfs2_wq); | |
886 | } | |
887 | ||
888 | debugfs_remove(ocfs2_debugfs_root); | |
889 | ||
890 | ocfs2_free_mem_caches(); | |
891 | ||
892 | unregister_filesystem(&ocfs2_fs_type); | |
893 | ||
ccd979bd MF |
894 | exit_ocfs2_uptodate_cache(); |
895 | ||
896 | mlog_exit_void(); | |
897 | } | |
898 | ||
899 | static void ocfs2_put_super(struct super_block *sb) | |
900 | { | |
901 | mlog_entry("(0x%p)\n", sb); | |
902 | ||
903 | ocfs2_sync_blockdev(sb); | |
904 | ocfs2_dismount_volume(sb, 0); | |
905 | ||
906 | mlog_exit_void(); | |
907 | } | |
908 | ||
726c3342 | 909 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
910 | { |
911 | struct ocfs2_super *osb; | |
912 | u32 numbits, freebits; | |
913 | int status; | |
914 | struct ocfs2_dinode *bm_lock; | |
915 | struct buffer_head *bh = NULL; | |
916 | struct inode *inode = NULL; | |
917 | ||
726c3342 | 918 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 919 | |
726c3342 | 920 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
921 | |
922 | inode = ocfs2_get_system_file_inode(osb, | |
923 | GLOBAL_BITMAP_SYSTEM_INODE, | |
924 | OCFS2_INVALID_SLOT); | |
925 | if (!inode) { | |
926 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
927 | status = -EIO; | |
928 | goto bail; | |
929 | } | |
930 | ||
4bcec184 | 931 | status = ocfs2_meta_lock(inode, &bh, 0); |
ccd979bd MF |
932 | if (status < 0) { |
933 | mlog_errno(status); | |
934 | goto bail; | |
935 | } | |
936 | ||
937 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
938 | ||
939 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
940 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
941 | ||
942 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 943 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
944 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
945 | buf->f_blocks = ((sector_t) numbits) * | |
946 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
947 | buf->f_bfree = ((sector_t) freebits) * | |
948 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
949 | buf->f_bavail = buf->f_bfree; | |
950 | buf->f_files = numbits; | |
951 | buf->f_ffree = freebits; | |
952 | ||
953 | brelse(bh); | |
954 | ||
955 | ocfs2_meta_unlock(inode, 0); | |
956 | status = 0; | |
957 | bail: | |
958 | if (inode) | |
959 | iput(inode); | |
960 | ||
961 | mlog_exit(status); | |
962 | ||
963 | return status; | |
964 | } | |
965 | ||
966 | static void ocfs2_inode_init_once(void *data, | |
e18b890b | 967 | struct kmem_cache *cachep, |
ccd979bd MF |
968 | unsigned long flags) |
969 | { | |
970 | struct ocfs2_inode_info *oi = data; | |
971 | ||
a35afb83 CL |
972 | oi->ip_flags = 0; |
973 | oi->ip_open_count = 0; | |
974 | spin_lock_init(&oi->ip_lock); | |
975 | ocfs2_extent_map_init(&oi->vfs_inode); | |
976 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
977 | oi->ip_created_trans = 0; | |
978 | oi->ip_last_trans = 0; | |
979 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 980 | |
a35afb83 CL |
981 | init_rwsem(&oi->ip_alloc_sem); |
982 | mutex_init(&oi->ip_io_mutex); | |
ccd979bd | 983 | |
a35afb83 CL |
984 | oi->ip_blkno = 0ULL; |
985 | oi->ip_clusters = 0; | |
ccd979bd | 986 | |
a35afb83 CL |
987 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
988 | ocfs2_lock_res_init_once(&oi->ip_meta_lockres); | |
989 | ocfs2_lock_res_init_once(&oi->ip_data_lockres); | |
990 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); | |
ccd979bd | 991 | |
a35afb83 | 992 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 993 | |
a35afb83 | 994 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
995 | } |
996 | ||
997 | static int ocfs2_initialize_mem_caches(void) | |
998 | { | |
999 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1000 | sizeof(struct ocfs2_inode_info), |
1001 | 0, | |
1002 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1003 | SLAB_MEM_SPREAD), | |
20c2df83 | 1004 | ocfs2_inode_init_once); |
ccd979bd MF |
1005 | if (!ocfs2_inode_cachep) |
1006 | return -ENOMEM; | |
1007 | ||
ccd979bd MF |
1008 | return 0; |
1009 | } | |
1010 | ||
1011 | static void ocfs2_free_mem_caches(void) | |
1012 | { | |
1013 | if (ocfs2_inode_cachep) | |
1014 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd MF |
1015 | |
1016 | ocfs2_inode_cachep = NULL; | |
ccd979bd MF |
1017 | } |
1018 | ||
1019 | static int ocfs2_get_sector(struct super_block *sb, | |
1020 | struct buffer_head **bh, | |
1021 | int block, | |
1022 | int sect_size) | |
1023 | { | |
1024 | if (!sb_set_blocksize(sb, sect_size)) { | |
1025 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1026 | return -EIO; | |
1027 | } | |
1028 | ||
1029 | *bh = sb_getblk(sb, block); | |
1030 | if (!*bh) { | |
1031 | mlog_errno(-EIO); | |
1032 | return -EIO; | |
1033 | } | |
1034 | lock_buffer(*bh); | |
1035 | if (!buffer_dirty(*bh)) | |
1036 | clear_buffer_uptodate(*bh); | |
1037 | unlock_buffer(*bh); | |
1038 | ll_rw_block(READ, 1, bh); | |
1039 | wait_on_buffer(*bh); | |
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | /* ocfs2 1.0 only allows one cluster and node identity per kernel image. */ | |
1044 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb) | |
1045 | { | |
1046 | int status; | |
1047 | ||
1048 | /* XXX hold a ref on the node while mounte? easy enough, if | |
1049 | * desirable. */ | |
c271c5c2 SM |
1050 | if (ocfs2_mount_local(osb)) |
1051 | osb->node_num = 0; | |
1052 | else | |
1053 | osb->node_num = o2nm_this_node(); | |
1054 | ||
ccd979bd MF |
1055 | if (osb->node_num == O2NM_MAX_NODES) { |
1056 | mlog(ML_ERROR, "could not find this host's node number\n"); | |
1057 | status = -ENOENT; | |
1058 | goto bail; | |
1059 | } | |
1060 | ||
781ee3e2 | 1061 | mlog(0, "I am node %d\n", osb->node_num); |
ccd979bd MF |
1062 | |
1063 | status = 0; | |
1064 | bail: | |
1065 | return status; | |
1066 | } | |
1067 | ||
1068 | static int ocfs2_mount_volume(struct super_block *sb) | |
1069 | { | |
1070 | int status = 0; | |
1071 | int unlock_super = 0; | |
1072 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1073 | ||
1074 | mlog_entry_void(); | |
1075 | ||
1076 | if (ocfs2_is_hard_readonly(osb)) | |
1077 | goto leave; | |
1078 | ||
1079 | status = ocfs2_fill_local_node_info(osb); | |
1080 | if (status < 0) { | |
1081 | mlog_errno(status); | |
1082 | goto leave; | |
1083 | } | |
1084 | ||
1085 | status = ocfs2_register_hb_callbacks(osb); | |
1086 | if (status < 0) { | |
1087 | mlog_errno(status); | |
1088 | goto leave; | |
1089 | } | |
1090 | ||
1091 | status = ocfs2_dlm_init(osb); | |
1092 | if (status < 0) { | |
1093 | mlog_errno(status); | |
1094 | goto leave; | |
1095 | } | |
1096 | ||
1097 | /* requires vote_thread to be running. */ | |
1098 | status = ocfs2_register_net_handlers(osb); | |
1099 | if (status < 0) { | |
1100 | mlog_errno(status); | |
1101 | goto leave; | |
1102 | } | |
1103 | ||
1104 | status = ocfs2_super_lock(osb, 1); | |
1105 | if (status < 0) { | |
1106 | mlog_errno(status); | |
1107 | goto leave; | |
1108 | } | |
1109 | unlock_super = 1; | |
1110 | ||
1111 | /* This will load up the node map and add ourselves to it. */ | |
1112 | status = ocfs2_find_slot(osb); | |
1113 | if (status < 0) { | |
1114 | mlog_errno(status); | |
1115 | goto leave; | |
1116 | } | |
1117 | ||
1118 | ocfs2_populate_mounted_map(osb); | |
1119 | ||
1120 | /* load all node-local system inodes */ | |
1121 | status = ocfs2_init_local_system_inodes(osb); | |
1122 | if (status < 0) { | |
1123 | mlog_errno(status); | |
1124 | goto leave; | |
1125 | } | |
1126 | ||
1127 | status = ocfs2_check_volume(osb); | |
1128 | if (status < 0) { | |
1129 | mlog_errno(status); | |
1130 | goto leave; | |
1131 | } | |
1132 | ||
1133 | status = ocfs2_truncate_log_init(osb); | |
1134 | if (status < 0) { | |
1135 | mlog_errno(status); | |
1136 | goto leave; | |
1137 | } | |
1138 | ||
c271c5c2 SM |
1139 | if (ocfs2_mount_local(osb)) |
1140 | goto leave; | |
1141 | ||
ccd979bd MF |
1142 | /* This should be sent *after* we recovered our journal as it |
1143 | * will cause other nodes to unmark us as needing | |
1144 | * recovery. However, we need to send it *before* dropping the | |
1145 | * super block lock as otherwise their recovery threads might | |
1146 | * try to clean us up while we're live! */ | |
1147 | status = ocfs2_request_mount_vote(osb); | |
1148 | if (status < 0) | |
1149 | mlog_errno(status); | |
1150 | ||
1151 | leave: | |
1152 | if (unlock_super) | |
1153 | ocfs2_super_unlock(osb, 1); | |
1154 | ||
1155 | mlog_exit(status); | |
1156 | return status; | |
1157 | } | |
1158 | ||
1159 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
1160 | * memory barriers to make sure that we'll see the null task before | |
1161 | * being woken up */ | |
1162 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
1163 | { | |
1164 | mb(); | |
1165 | return osb->recovery_thread_task != NULL; | |
1166 | } | |
1167 | ||
1168 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) | |
1169 | { | |
1170 | int tmp; | |
1171 | struct ocfs2_super *osb = NULL; | |
c271c5c2 | 1172 | char nodestr[8]; |
ccd979bd MF |
1173 | |
1174 | mlog_entry("(0x%p)\n", sb); | |
1175 | ||
1176 | BUG_ON(!sb); | |
1177 | osb = OCFS2_SB(sb); | |
1178 | BUG_ON(!osb); | |
1179 | ||
1180 | ocfs2_shutdown_local_alloc(osb); | |
1181 | ||
1182 | ocfs2_truncate_log_shutdown(osb); | |
1183 | ||
1184 | /* disable any new recovery threads and wait for any currently | |
1185 | * running ones to exit. Do this before setting the vol_state. */ | |
c74ec2f7 | 1186 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1187 | osb->disable_recovery = 1; |
c74ec2f7 | 1188 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1189 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); |
1190 | ||
1191 | /* At this point, we know that no more recovery threads can be | |
1192 | * launched, so wait for any recovery completion work to | |
1193 | * complete. */ | |
1194 | flush_workqueue(ocfs2_wq); | |
1195 | ||
1196 | ocfs2_journal_shutdown(osb); | |
1197 | ||
1198 | ocfs2_sync_blockdev(sb); | |
1199 | ||
1200 | /* No dlm means we've failed during mount, so skip all the | |
1201 | * steps which depended on that to complete. */ | |
1202 | if (osb->dlm) { | |
1203 | tmp = ocfs2_super_lock(osb, 1); | |
1204 | if (tmp < 0) { | |
1205 | mlog_errno(tmp); | |
1206 | return; | |
1207 | } | |
1208 | ||
1209 | tmp = ocfs2_request_umount_vote(osb); | |
1210 | if (tmp < 0) | |
1211 | mlog_errno(tmp); | |
1212 | ||
1213 | if (osb->slot_num != OCFS2_INVALID_SLOT) | |
1214 | ocfs2_put_slot(osb); | |
1215 | ||
1216 | ocfs2_super_unlock(osb, 1); | |
1217 | } | |
1218 | ||
1219 | ocfs2_release_system_inodes(osb); | |
1220 | ||
1221 | if (osb->dlm) { | |
1222 | ocfs2_unregister_net_handlers(osb); | |
1223 | ||
1224 | ocfs2_dlm_shutdown(osb); | |
1225 | } | |
1226 | ||
1227 | ocfs2_clear_hb_callbacks(osb); | |
1228 | ||
1229 | debugfs_remove(osb->osb_debug_root); | |
1230 | ||
1231 | if (!mnt_err) | |
1232 | ocfs2_stop_heartbeat(osb); | |
1233 | ||
1234 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1235 | ||
c271c5c2 SM |
1236 | if (ocfs2_mount_local(osb)) |
1237 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1238 | else | |
1239 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
1240 | ||
1241 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1242 | osb->dev_str, nodestr); | |
ccd979bd MF |
1243 | |
1244 | ocfs2_delete_osb(osb); | |
1245 | kfree(osb); | |
1246 | sb->s_dev = 0; | |
1247 | sb->s_fs_info = NULL; | |
1248 | } | |
1249 | ||
1250 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1251 | unsigned uuid_bytes) | |
1252 | { | |
1253 | int i, ret; | |
1254 | char *ptr; | |
1255 | ||
1256 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1257 | ||
cd861280 | 1258 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1259 | if (osb->uuid_str == NULL) |
1260 | return -ENOMEM; | |
1261 | ||
ccd979bd MF |
1262 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1263 | /* print with null */ | |
1264 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1265 | if (ret != 2) /* drop super cleans up */ | |
1266 | return -EINVAL; | |
1267 | /* then only advance past the last char */ | |
1268 | ptr += 2; | |
1269 | } | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | static int ocfs2_initialize_super(struct super_block *sb, | |
1275 | struct buffer_head *bh, | |
1276 | int sector_size) | |
1277 | { | |
1278 | int status = 0; | |
5a254031 MF |
1279 | int i, cbits, bbits; |
1280 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd MF |
1281 | struct inode *inode = NULL; |
1282 | struct buffer_head *bitmap_bh = NULL; | |
1283 | struct ocfs2_journal *journal; | |
1284 | __le32 uuid_net_key; | |
1285 | struct ocfs2_super *osb; | |
1286 | ||
1287 | mlog_entry_void(); | |
1288 | ||
cd861280 | 1289 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1290 | if (!osb) { |
1291 | status = -ENOMEM; | |
1292 | mlog_errno(status); | |
1293 | goto bail; | |
1294 | } | |
1295 | ||
1296 | sb->s_fs_info = osb; | |
1297 | sb->s_op = &ocfs2_sops; | |
1298 | sb->s_export_op = &ocfs2_export_ops; | |
e0dceaf0 | 1299 | sb->s_time_gran = 1; |
ccd979bd MF |
1300 | sb->s_flags |= MS_NOATIME; |
1301 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
1302 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
1303 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1304 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd MF |
1305 | |
1306 | osb->sb = sb; | |
1307 | /* Save off for ocfs2_rw_direct */ | |
1308 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1309 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd MF |
1310 | |
1311 | osb->net_response_ids = 0; | |
1312 | spin_lock_init(&osb->net_response_lock); | |
1313 | INIT_LIST_HEAD(&osb->net_response_list); | |
1314 | ||
1315 | INIT_LIST_HEAD(&osb->osb_net_handlers); | |
1316 | init_waitqueue_head(&osb->recovery_event); | |
1317 | spin_lock_init(&osb->vote_task_lock); | |
1318 | init_waitqueue_head(&osb->vote_event); | |
1319 | osb->vote_work_sequence = 0; | |
1320 | osb->vote_wake_sequence = 0; | |
1321 | INIT_LIST_HEAD(&osb->blocked_lock_list); | |
1322 | osb->blocked_lock_count = 0; | |
1323 | INIT_LIST_HEAD(&osb->vote_list); | |
1324 | spin_lock_init(&osb->osb_lock); | |
1325 | ||
1326 | atomic_set(&osb->alloc_stats.moves, 0); | |
1327 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1328 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1329 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1330 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1331 | ||
1332 | ocfs2_init_node_maps(osb); | |
1333 | ||
1334 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1335 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1336 | ||
c74ec2f7 | 1337 | mutex_init(&osb->recovery_lock); |
ccd979bd MF |
1338 | |
1339 | osb->disable_recovery = 0; | |
1340 | osb->recovery_thread_task = NULL; | |
1341 | ||
1342 | init_waitqueue_head(&osb->checkpoint_event); | |
1343 | atomic_set(&osb->needs_checkpoint, 0); | |
1344 | ||
7f1a37e3 TY |
1345 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1346 | ||
ccd979bd MF |
1347 | osb->node_num = O2NM_INVALID_NODE_NUM; |
1348 | osb->slot_num = OCFS2_INVALID_SLOT; | |
1349 | ||
1350 | osb->local_alloc_state = OCFS2_LA_UNUSED; | |
1351 | osb->local_alloc_bh = NULL; | |
1352 | ||
1353 | ocfs2_setup_hb_callbacks(osb); | |
1354 | ||
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 | osb->net_key = le32_to_cpu(uuid_net_key); |
1464 | ||
1465 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
1466 | osb->vol_label[63] = '\0'; | |
1467 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
1468 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
1469 | osb->first_cluster_group_blkno = | |
1470 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
1471 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
1472 | mlog(0, "vol_label: %s\n", osb->vol_label); | |
1473 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
1474 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
1475 | (unsigned long long)osb->root_blkno, | |
1476 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
1477 | |
1478 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
1479 | if (!osb->osb_dlm_debug) { | |
1480 | status = -ENOMEM; | |
1481 | mlog_errno(status); | |
1482 | goto bail; | |
1483 | } | |
1484 | ||
1485 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
1486 | ||
1487 | /* load root, system_dir, and all global system inodes */ | |
1488 | status = ocfs2_init_global_system_inodes(osb); | |
1489 | if (status < 0) { | |
1490 | mlog_errno(status); | |
1491 | goto bail; | |
1492 | } | |
1493 | ||
1494 | /* | |
1495 | * global bitmap | |
1496 | */ | |
1497 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
1498 | OCFS2_INVALID_SLOT); | |
1499 | if (!inode) { | |
1500 | status = -EINVAL; | |
1501 | mlog_errno(status); | |
1502 | goto bail; | |
1503 | } | |
1504 | ||
1505 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
1506 | ||
101ebf25 MF |
1507 | /* We don't have a cluster lock on the bitmap here because |
1508 | * we're only interested in static information and the extra | |
1509 | * complexity at mount time isn't worht it. Don't pass the | |
1510 | * inode in to the read function though as we don't want it to | |
1511 | * be put in the cache. */ | |
ccd979bd | 1512 | status = ocfs2_read_block(osb, osb->bitmap_blkno, &bitmap_bh, 0, |
101ebf25 | 1513 | NULL); |
ccd979bd MF |
1514 | iput(inode); |
1515 | if (status < 0) { | |
1516 | mlog_errno(status); | |
1517 | goto bail; | |
1518 | } | |
1519 | ||
1520 | di = (struct ocfs2_dinode *) bitmap_bh->b_data; | |
1521 | osb->bitmap_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg); | |
ccd979bd | 1522 | brelse(bitmap_bh); |
b0697053 MF |
1523 | mlog(0, "cluster bitmap inode: %llu, clusters per group: %u\n", |
1524 | (unsigned long long)osb->bitmap_blkno, osb->bitmap_cpg); | |
ccd979bd MF |
1525 | |
1526 | status = ocfs2_init_slot_info(osb); | |
1527 | if (status < 0) { | |
1528 | mlog_errno(status); | |
1529 | goto bail; | |
1530 | } | |
1531 | ||
ccd979bd MF |
1532 | bail: |
1533 | mlog_exit(status); | |
1534 | return status; | |
1535 | } | |
1536 | ||
1537 | /* | |
1538 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
1539 | * -EINVAL if there is a bad superblock | |
1540 | * 0 on success | |
1541 | */ | |
1542 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
1543 | struct buffer_head *bh, | |
1544 | u32 blksz) | |
1545 | { | |
1546 | int status = -EAGAIN; | |
1547 | ||
1548 | mlog_entry_void(); | |
1549 | ||
1550 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
1551 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
1552 | status = -EINVAL; | |
1553 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
1554 | mlog(ML_ERROR, "found superblock with incorrect block " | |
1555 | "size: found %u, should be %u\n", | |
1556 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
1557 | blksz); | |
1558 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
1559 | OCFS2_MAJOR_REV_LEVEL || | |
1560 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
1561 | OCFS2_MINOR_REV_LEVEL) { | |
1562 | mlog(ML_ERROR, "found superblock with bad version: " | |
1563 | "found %u.%u, should be %u.%u\n", | |
1564 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
1565 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
1566 | OCFS2_MAJOR_REV_LEVEL, | |
1567 | OCFS2_MINOR_REV_LEVEL); | |
1568 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
1569 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 1570 | "found %llu, should be %llu\n", |
1ca1a111 | 1571 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 1572 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
1573 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
1574 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
1575 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
1576 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
1577 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
1578 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
1579 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
1580 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
1581 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
1582 | mlog(ML_ERROR, | |
1583 | "Superblock slots found greater than file system " | |
1584 | "maximum: found %u, max %u\n", | |
1585 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
1586 | OCFS2_MAX_SLOTS); | |
1587 | } else { | |
1588 | /* found it! */ | |
1589 | status = 0; | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | mlog_exit(status); | |
1594 | return status; | |
1595 | } | |
1596 | ||
1597 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
1598 | { | |
1599 | int status = 0; | |
1600 | int dirty; | |
c271c5c2 | 1601 | int local; |
ccd979bd MF |
1602 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
1603 | * recover | |
1604 | * ourselves. */ | |
1605 | ||
1606 | mlog_entry_void(); | |
1607 | ||
1608 | /* Init our journal object. */ | |
1609 | status = ocfs2_journal_init(osb->journal, &dirty); | |
1610 | if (status < 0) { | |
1611 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
1612 | goto finally; | |
1613 | } | |
1614 | ||
1615 | /* If the journal was unmounted cleanly then we don't want to | |
1616 | * recover anything. Otherwise, journal_load will do that | |
1617 | * dirty work for us :) */ | |
1618 | if (!dirty) { | |
1619 | status = ocfs2_journal_wipe(osb->journal, 0); | |
1620 | if (status < 0) { | |
1621 | mlog_errno(status); | |
1622 | goto finally; | |
1623 | } | |
1624 | } else { | |
1625 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
1626 | "recovering volume.\n"); | |
1627 | } | |
1628 | ||
c271c5c2 SM |
1629 | local = ocfs2_mount_local(osb); |
1630 | ||
ccd979bd | 1631 | /* will play back anything left in the journal. */ |
c271c5c2 | 1632 | ocfs2_journal_load(osb->journal, local); |
ccd979bd MF |
1633 | |
1634 | if (dirty) { | |
1635 | /* recover my local alloc if we didn't unmount cleanly. */ | |
1636 | status = ocfs2_begin_local_alloc_recovery(osb, | |
1637 | osb->slot_num, | |
1638 | &local_alloc); | |
1639 | if (status < 0) { | |
1640 | mlog_errno(status); | |
1641 | goto finally; | |
1642 | } | |
1643 | /* we complete the recovery process after we've marked | |
1644 | * ourselves as mounted. */ | |
1645 | } | |
1646 | ||
1647 | mlog(0, "Journal loaded.\n"); | |
1648 | ||
1649 | status = ocfs2_load_local_alloc(osb); | |
1650 | if (status < 0) { | |
1651 | mlog_errno(status); | |
1652 | goto finally; | |
1653 | } | |
1654 | ||
1655 | if (dirty) { | |
1656 | /* Recovery will be completed after we've mounted the | |
1657 | * rest of the volume. */ | |
1658 | osb->dirty = 1; | |
1659 | osb->local_alloc_copy = local_alloc; | |
1660 | local_alloc = NULL; | |
1661 | } | |
1662 | ||
1663 | /* go through each journal, trylock it and if you get the | |
1664 | * lock, and it's marked as dirty, set the bit in the recover | |
1665 | * map and launch a recovery thread for it. */ | |
1666 | status = ocfs2_mark_dead_nodes(osb); | |
1667 | if (status < 0) | |
1668 | mlog_errno(status); | |
1669 | ||
1670 | finally: | |
1671 | if (local_alloc) | |
1672 | kfree(local_alloc); | |
1673 | ||
1674 | mlog_exit(status); | |
1675 | return status; | |
1676 | } | |
1677 | ||
1678 | /* | |
1679 | * The routine gets called from dismount or close whenever a dismount on | |
1680 | * volume is requested and the osb open count becomes 1. | |
1681 | * It will remove the osb from the global list and also free up all the | |
1682 | * initialized resources and fileobject. | |
1683 | */ | |
1684 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
1685 | { | |
1686 | mlog_entry_void(); | |
1687 | ||
1688 | /* This function assumes that the caller has the main osb resource */ | |
1689 | ||
1690 | if (osb->slot_info) | |
1691 | ocfs2_free_slot_info(osb->slot_info); | |
1692 | ||
b4df6ed8 | 1693 | kfree(osb->osb_orphan_wipes); |
ccd979bd MF |
1694 | /* FIXME |
1695 | * This belongs in journal shutdown, but because we have to | |
1696 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
1697 | * we free it here. | |
1698 | */ | |
1699 | kfree(osb->journal); | |
1700 | if (osb->local_alloc_copy) | |
1701 | kfree(osb->local_alloc_copy); | |
1702 | kfree(osb->uuid_str); | |
1703 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
1704 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
1705 | ||
1706 | mlog_exit_void(); | |
1707 | } | |
1708 | ||
1709 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
1710 | * panic(). We do not support continue-on-error operation. */ | |
1711 | static void ocfs2_handle_error(struct super_block *sb) | |
1712 | { | |
1713 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1714 | ||
1715 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
1716 | panic("OCFS2: (device %s): panic forced after error\n", | |
1717 | sb->s_id); | |
1718 | ||
1719 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
1720 | ||
1721 | if (sb->s_flags & MS_RDONLY && | |
1722 | (ocfs2_is_soft_readonly(osb) || | |
1723 | ocfs2_is_hard_readonly(osb))) | |
1724 | return; | |
1725 | ||
1726 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
1727 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
1728 | "system is unmounted.\n"); | |
1729 | sb->s_flags |= MS_RDONLY; | |
1730 | ocfs2_set_ro_flag(osb, 0); | |
1731 | } | |
1732 | ||
1733 | static char error_buf[1024]; | |
1734 | ||
1735 | void __ocfs2_error(struct super_block *sb, | |
1736 | const char *function, | |
1737 | const char *fmt, ...) | |
1738 | { | |
1739 | va_list args; | |
1740 | ||
1741 | va_start(args, fmt); | |
4a6e617a | 1742 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1743 | va_end(args); |
1744 | ||
1745 | /* Not using mlog here because we want to show the actual | |
1746 | * function the error came from. */ | |
1747 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
1748 | sb->s_id, function, error_buf); | |
1749 | ||
1750 | ocfs2_handle_error(sb); | |
1751 | } | |
1752 | ||
1753 | /* Handle critical errors. This is intentionally more drastic than | |
1754 | * ocfs2_handle_error, so we only use for things like journal errors, | |
1755 | * etc. */ | |
1756 | void __ocfs2_abort(struct super_block* sb, | |
1757 | const char *function, | |
1758 | const char *fmt, ...) | |
1759 | { | |
1760 | va_list args; | |
1761 | ||
1762 | va_start(args, fmt); | |
4a6e617a | 1763 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1764 | va_end(args); |
1765 | ||
1766 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
1767 | sb->s_id, function, error_buf); | |
1768 | ||
1769 | /* We don't have the cluster support yet to go straight to | |
1770 | * hard readonly in here. Until then, we want to keep | |
1771 | * ocfs2_abort() so that we can at least mark critical | |
1772 | * errors. | |
1773 | * | |
1774 | * TODO: This should abort the journal and alert other nodes | |
1775 | * that our slot needs recovery. */ | |
1776 | ||
1777 | /* Force a panic(). This stinks, but it's better than letting | |
1778 | * things continue without having a proper hard readonly | |
1779 | * here. */ | |
1780 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
1781 | ocfs2_handle_error(sb); | |
1782 | } | |
1783 | ||
1784 | module_init(ocfs2_init); | |
1785 | module_exit(ocfs2_exit); |