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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 | ||
84 | static int ocfs2_parse_options(struct super_block *sb, char *options, | |
baf4661a SM |
85 | unsigned long *mount_opt, s16 *slot, |
86 | int is_remount); | |
ccd979bd MF |
87 | static void ocfs2_put_super(struct super_block *sb); |
88 | static int ocfs2_mount_volume(struct super_block *sb); | |
89 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
90 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
91 | static int ocfs2_initialize_mem_caches(void); | |
92 | static void ocfs2_free_mem_caches(void); | |
93 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
94 | ||
726c3342 | 95 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
96 | |
97 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
98 | ||
99 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
100 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
101 | static int ocfs2_release_system_inodes(struct ocfs2_super *osb); | |
102 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb); | |
103 | static int ocfs2_check_volume(struct ocfs2_super *osb); | |
104 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
105 | struct buffer_head *bh, | |
106 | u32 sectsize); | |
107 | static int ocfs2_initialize_super(struct super_block *sb, | |
108 | struct buffer_head *bh, | |
109 | int sector_size); | |
110 | static int ocfs2_get_sector(struct super_block *sb, | |
111 | struct buffer_head **bh, | |
112 | int block, | |
113 | int sect_size); | |
114 | static void ocfs2_write_super(struct super_block *sb); | |
115 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
116 | static void ocfs2_destroy_inode(struct inode *inode); | |
117 | ||
ee9b6d61 | 118 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
119 | .statfs = ocfs2_statfs, |
120 | .alloc_inode = ocfs2_alloc_inode, | |
121 | .destroy_inode = ocfs2_destroy_inode, | |
122 | .drop_inode = ocfs2_drop_inode, | |
123 | .clear_inode = ocfs2_clear_inode, | |
124 | .delete_inode = ocfs2_delete_inode, | |
125 | .sync_fs = ocfs2_sync_fs, | |
126 | .write_super = ocfs2_write_super, | |
127 | .put_super = ocfs2_put_super, | |
128 | .remount_fs = ocfs2_remount, | |
129 | }; | |
130 | ||
131 | enum { | |
132 | Opt_barrier, | |
133 | Opt_err_panic, | |
134 | Opt_err_ro, | |
135 | Opt_intr, | |
136 | Opt_nointr, | |
137 | Opt_hb_none, | |
138 | Opt_hb_local, | |
139 | Opt_data_ordered, | |
140 | Opt_data_writeback, | |
7f1a37e3 | 141 | Opt_atime_quantum, |
baf4661a | 142 | Opt_slot, |
ccd979bd MF |
143 | Opt_err, |
144 | }; | |
145 | ||
146 | static match_table_t tokens = { | |
147 | {Opt_barrier, "barrier=%u"}, | |
148 | {Opt_err_panic, "errors=panic"}, | |
149 | {Opt_err_ro, "errors=remount-ro"}, | |
150 | {Opt_intr, "intr"}, | |
151 | {Opt_nointr, "nointr"}, | |
152 | {Opt_hb_none, OCFS2_HB_NONE}, | |
153 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
154 | {Opt_data_ordered, "data=ordered"}, | |
155 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 156 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 157 | {Opt_slot, "preferred_slot=%u"}, |
ccd979bd MF |
158 | {Opt_err, NULL} |
159 | }; | |
160 | ||
161 | /* | |
162 | * write_super and sync_fs ripped right out of ext3. | |
163 | */ | |
164 | static void ocfs2_write_super(struct super_block *sb) | |
165 | { | |
7892f2f4 | 166 | if (mutex_trylock(&sb->s_lock) != 0) |
ccd979bd MF |
167 | BUG(); |
168 | sb->s_dirt = 0; | |
169 | } | |
170 | ||
171 | static int ocfs2_sync_fs(struct super_block *sb, int wait) | |
172 | { | |
173 | int status = 0; | |
174 | tid_t target; | |
175 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
176 | ||
177 | sb->s_dirt = 0; | |
178 | ||
179 | if (ocfs2_is_hard_readonly(osb)) | |
180 | return -EROFS; | |
181 | ||
182 | if (wait) { | |
183 | status = ocfs2_flush_truncate_log(osb); | |
184 | if (status < 0) | |
185 | mlog_errno(status); | |
186 | } else { | |
187 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
188 | } | |
189 | ||
190 | if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) { | |
191 | if (wait) | |
192 | log_wait_commit(OCFS2_SB(sb)->journal->j_journal, | |
193 | target); | |
194 | } | |
195 | return 0; | |
196 | } | |
197 | ||
198 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) | |
199 | { | |
200 | struct inode *new = NULL; | |
201 | int status = 0; | |
202 | int i; | |
203 | ||
204 | mlog_entry_void(); | |
205 | ||
24c19ef4 | 206 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE); |
ccd979bd MF |
207 | if (IS_ERR(new)) { |
208 | status = PTR_ERR(new); | |
209 | mlog_errno(status); | |
210 | goto bail; | |
211 | } | |
212 | osb->root_inode = new; | |
213 | ||
24c19ef4 | 214 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE); |
ccd979bd MF |
215 | if (IS_ERR(new)) { |
216 | status = PTR_ERR(new); | |
217 | mlog_errno(status); | |
218 | goto bail; | |
219 | } | |
220 | osb->sys_root_inode = new; | |
221 | ||
222 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
223 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
224 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
225 | if (!new) { | |
226 | ocfs2_release_system_inodes(osb); | |
227 | status = -EINVAL; | |
228 | mlog_errno(status); | |
229 | /* FIXME: Should ERROR_RO_FS */ | |
230 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
231 | "possibly corrupt fs?", i); | |
232 | goto bail; | |
233 | } | |
234 | // the array now has one ref, so drop this one | |
235 | iput(new); | |
236 | } | |
237 | ||
238 | bail: | |
239 | mlog_exit(status); | |
240 | return status; | |
241 | } | |
242 | ||
243 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
244 | { | |
245 | struct inode *new = NULL; | |
246 | int status = 0; | |
247 | int i; | |
248 | ||
249 | mlog_entry_void(); | |
250 | ||
251 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
252 | i < NUM_SYSTEM_INODES; | |
253 | i++) { | |
254 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
255 | if (!new) { | |
256 | ocfs2_release_system_inodes(osb); | |
257 | status = -EINVAL; | |
258 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
259 | status, i, osb->slot_num); | |
260 | goto bail; | |
261 | } | |
262 | /* the array now has one ref, so drop this one */ | |
263 | iput(new); | |
264 | } | |
265 | ||
266 | bail: | |
267 | mlog_exit(status); | |
268 | return status; | |
269 | } | |
270 | ||
271 | static int ocfs2_release_system_inodes(struct ocfs2_super *osb) | |
272 | { | |
273 | int status = 0, i; | |
274 | struct inode *inode; | |
275 | ||
276 | mlog_entry_void(); | |
277 | ||
278 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
279 | inode = osb->system_inodes[i]; | |
280 | if (inode) { | |
281 | iput(inode); | |
282 | osb->system_inodes[i] = NULL; | |
283 | } | |
284 | } | |
285 | ||
286 | inode = osb->sys_root_inode; | |
287 | if (inode) { | |
288 | iput(inode); | |
289 | osb->sys_root_inode = NULL; | |
290 | } | |
291 | ||
292 | inode = osb->root_inode; | |
293 | if (inode) { | |
294 | iput(inode); | |
295 | osb->root_inode = NULL; | |
296 | } | |
297 | ||
298 | mlog_exit(status); | |
299 | return status; | |
300 | } | |
301 | ||
302 | /* We're allocating fs objects, use GFP_NOFS */ | |
303 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
304 | { | |
305 | struct ocfs2_inode_info *oi; | |
306 | ||
e6b4f8da | 307 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
308 | if (!oi) |
309 | return NULL; | |
310 | ||
311 | return &oi->vfs_inode; | |
312 | } | |
313 | ||
314 | static void ocfs2_destroy_inode(struct inode *inode) | |
315 | { | |
316 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
317 | } | |
318 | ||
319 | /* From xfs_super.c:xfs_max_file_offset | |
320 | * Copyright (c) 2000-2004 Silicon Graphics, Inc. | |
321 | */ | |
a00cce35 | 322 | static unsigned long long ocfs2_max_file_offset(unsigned int blockshift) |
ccd979bd MF |
323 | { |
324 | unsigned int pagefactor = 1; | |
325 | unsigned int bitshift = BITS_PER_LONG - 1; | |
326 | ||
327 | /* Figure out maximum filesize, on Linux this can depend on | |
328 | * the filesystem blocksize (on 32 bit platforms). | |
329 | * __block_prepare_write does this in an [unsigned] long... | |
330 | * page->index << (PAGE_CACHE_SHIFT - bbits) | |
331 | * So, for page sized blocks (4K on 32 bit platforms), | |
332 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
333 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
334 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
335 | * Note1: get_block_t takes a long (implicit cast from above) | |
336 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
337 | * can optionally convert the [unsigned] long from above into | |
338 | * an [unsigned] long long. | |
339 | */ | |
340 | ||
341 | #if BITS_PER_LONG == 32 | |
342 | # if defined(CONFIG_LBD) | |
2ecd05ae | 343 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
ccd979bd MF |
344 | pagefactor = PAGE_CACHE_SIZE; |
345 | bitshift = BITS_PER_LONG; | |
346 | # else | |
347 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
348 | # endif | |
349 | #endif | |
350 | ||
351 | return (((unsigned long long)pagefactor) << bitshift) - 1; | |
352 | } | |
353 | ||
354 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
355 | { | |
356 | int incompat_features; | |
357 | int ret = 0; | |
358 | unsigned long parsed_options; | |
baf4661a | 359 | s16 slot; |
ccd979bd MF |
360 | struct ocfs2_super *osb = OCFS2_SB(sb); |
361 | ||
baf4661a | 362 | if (!ocfs2_parse_options(sb, data, &parsed_options, &slot, 1)) { |
ccd979bd MF |
363 | ret = -EINVAL; |
364 | goto out; | |
365 | } | |
366 | ||
367 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
368 | (parsed_options & OCFS2_MOUNT_HB_LOCAL)) { | |
369 | ret = -EINVAL; | |
370 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
371 | goto out; | |
372 | } | |
373 | ||
374 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
375 | (parsed_options & OCFS2_MOUNT_DATA_WRITEBACK)) { | |
376 | ret = -EINVAL; | |
377 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
378 | goto out; | |
379 | } | |
380 | ||
381 | /* We're going to/from readonly mode. */ | |
382 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
383 | /* Lock here so the check of HARD_RO and the potential | |
384 | * setting of SOFT_RO is atomic. */ | |
385 | spin_lock(&osb->osb_lock); | |
386 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
387 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
388 | ret = -EROFS; | |
389 | goto unlock_osb; | |
390 | } | |
391 | ||
392 | if (*flags & MS_RDONLY) { | |
393 | mlog(0, "Going to ro mode.\n"); | |
394 | sb->s_flags |= MS_RDONLY; | |
395 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
396 | } else { | |
397 | mlog(0, "Making ro filesystem writeable.\n"); | |
398 | ||
399 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
400 | mlog(ML_ERROR, "Cannot remount RDWR " | |
401 | "filesystem due to previous errors.\n"); | |
402 | ret = -EROFS; | |
403 | goto unlock_osb; | |
404 | } | |
405 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
406 | if (incompat_features) { | |
407 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
408 | "of unsupported optional features " | |
409 | "(%x).\n", incompat_features); | |
410 | ret = -EINVAL; | |
411 | goto unlock_osb; | |
412 | } | |
413 | sb->s_flags &= ~MS_RDONLY; | |
414 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
415 | } | |
416 | unlock_osb: | |
417 | spin_unlock(&osb->osb_lock); | |
418 | } | |
419 | ||
420 | if (!ret) { | |
421 | if (!ocfs2_is_hard_readonly(osb)) | |
422 | ocfs2_set_journal_params(osb); | |
423 | ||
424 | /* Only save off the new mount options in case of a successful | |
425 | * remount. */ | |
426 | osb->s_mount_opt = parsed_options; | |
427 | } | |
428 | out: | |
429 | return ret; | |
430 | } | |
431 | ||
432 | static int ocfs2_sb_probe(struct super_block *sb, | |
433 | struct buffer_head **bh, | |
434 | int *sector_size) | |
435 | { | |
436 | int status = 0, tmpstat; | |
437 | struct ocfs1_vol_disk_hdr *hdr; | |
438 | struct ocfs2_dinode *di; | |
439 | int blksize; | |
440 | ||
441 | *bh = NULL; | |
442 | ||
443 | /* may be > 512 */ | |
444 | *sector_size = bdev_hardsect_size(sb->s_bdev); | |
445 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { | |
446 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
447 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
448 | status = -EINVAL; | |
449 | goto bail; | |
450 | } | |
451 | ||
452 | /* Can this really happen? */ | |
453 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
454 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
455 | ||
456 | /* check block zero for old format */ | |
457 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
458 | if (status < 0) { | |
459 | mlog_errno(status); | |
460 | goto bail; | |
461 | } | |
462 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
463 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
464 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
465 | hdr->major_version, hdr->minor_version); | |
466 | status = -EINVAL; | |
467 | } | |
468 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
469 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
470 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
471 | hdr->signature); | |
472 | status = -EINVAL; | |
473 | } | |
474 | brelse(*bh); | |
475 | *bh = NULL; | |
476 | if (status < 0) { | |
477 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
478 | "upgraded before mounting with ocfs v2\n"); | |
479 | goto bail; | |
480 | } | |
481 | ||
482 | /* | |
483 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
484 | * blocksizes. 4096 is the maximum blocksize because it is | |
485 | * the minimum clustersize. | |
486 | */ | |
487 | status = -EINVAL; | |
488 | for (blksize = *sector_size; | |
489 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
490 | blksize <<= 1) { | |
491 | tmpstat = ocfs2_get_sector(sb, bh, | |
492 | OCFS2_SUPER_BLOCK_BLKNO, | |
493 | blksize); | |
494 | if (tmpstat < 0) { | |
495 | status = tmpstat; | |
496 | mlog_errno(status); | |
497 | goto bail; | |
498 | } | |
499 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
500 | status = ocfs2_verify_volume(di, *bh, blksize); | |
501 | if (status >= 0) | |
502 | goto bail; | |
503 | brelse(*bh); | |
504 | *bh = NULL; | |
505 | if (status != -EAGAIN) | |
506 | break; | |
507 | } | |
508 | ||
509 | bail: | |
510 | return status; | |
511 | } | |
512 | ||
c271c5c2 SM |
513 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
514 | { | |
515 | if (ocfs2_mount_local(osb)) { | |
516 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
517 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
518 | "mounted device.\n"); | |
519 | return -EINVAL; | |
520 | } | |
521 | } | |
522 | ||
523 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { | |
524 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb)) { | |
525 | mlog(ML_ERROR, "Heartbeat has to be started to mount " | |
526 | "a read-write clustered device.\n"); | |
527 | return -EINVAL; | |
528 | } | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
ccd979bd MF |
534 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
535 | { | |
536 | struct dentry *root; | |
537 | int status, sector_size; | |
538 | unsigned long parsed_opt; | |
baf4661a | 539 | s16 slot; |
ccd979bd MF |
540 | struct inode *inode = NULL; |
541 | struct ocfs2_super *osb = NULL; | |
542 | struct buffer_head *bh = NULL; | |
c271c5c2 | 543 | char nodestr[8]; |
ccd979bd MF |
544 | |
545 | mlog_entry("%p, %p, %i", sb, data, silent); | |
546 | ||
baf4661a | 547 | if (!ocfs2_parse_options(sb, data, &parsed_opt, &slot, 0)) { |
ccd979bd MF |
548 | status = -EINVAL; |
549 | goto read_super_error; | |
550 | } | |
551 | ||
c271c5c2 SM |
552 | /* for now we only have one cluster/node, make sure we see it |
553 | * in the heartbeat universe */ | |
554 | if (parsed_opt & OCFS2_MOUNT_HB_LOCAL) { | |
555 | if (!o2hb_check_local_node_heartbeating()) { | |
556 | status = -EINVAL; | |
557 | goto read_super_error; | |
558 | } | |
559 | } | |
560 | ||
ccd979bd MF |
561 | /* probe for superblock */ |
562 | status = ocfs2_sb_probe(sb, &bh, §or_size); | |
563 | if (status < 0) { | |
564 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
565 | goto read_super_error; | |
566 | } | |
567 | ||
568 | status = ocfs2_initialize_super(sb, bh, sector_size); | |
569 | osb = OCFS2_SB(sb); | |
570 | if (status < 0) { | |
571 | mlog_errno(status); | |
572 | goto read_super_error; | |
573 | } | |
574 | brelse(bh); | |
575 | bh = NULL; | |
ccd979bd | 576 | osb->s_mount_opt = parsed_opt; |
baf4661a | 577 | osb->preferred_slot = slot; |
ccd979bd MF |
578 | |
579 | sb->s_magic = OCFS2_SUPER_MAGIC; | |
580 | ||
581 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, | |
582 | * heartbeat=none */ | |
583 | if (bdev_read_only(sb->s_bdev)) { | |
584 | if (!(sb->s_flags & MS_RDONLY)) { | |
585 | status = -EACCES; | |
586 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
587 | "mount was not specified.\n"); | |
588 | goto read_super_error; | |
589 | } | |
590 | ||
591 | /* You should not be able to start a local heartbeat | |
592 | * on a readonly device. */ | |
593 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
594 | status = -EROFS; | |
595 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
596 | "device.\n"); | |
597 | goto read_super_error; | |
598 | } | |
599 | ||
600 | status = ocfs2_check_journals_nolocks(osb); | |
601 | if (status < 0) { | |
602 | if (status == -EROFS) | |
603 | mlog(ML_ERROR, "Recovery required on readonly " | |
604 | "file system, but write access is " | |
605 | "unavailable.\n"); | |
606 | else | |
607 | mlog_errno(status); | |
608 | goto read_super_error; | |
609 | } | |
610 | ||
611 | ocfs2_set_ro_flag(osb, 1); | |
612 | ||
613 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
614 | "services will be utilized for this mount. Recovery " | |
615 | "will be skipped.\n"); | |
616 | } | |
617 | ||
618 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
619 | if (sb->s_flags & MS_RDONLY) |
620 | ocfs2_set_ro_flag(osb, 0); | |
621 | } | |
622 | ||
c271c5c2 SM |
623 | status = ocfs2_verify_heartbeat(osb); |
624 | if (status < 0) { | |
625 | mlog_errno(status); | |
626 | goto read_super_error; | |
627 | } | |
628 | ||
ccd979bd MF |
629 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
630 | ocfs2_debugfs_root); | |
631 | if (!osb->osb_debug_root) { | |
632 | status = -EINVAL; | |
633 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
634 | goto read_super_error; | |
635 | } | |
636 | ||
637 | status = ocfs2_mount_volume(sb); | |
638 | if (osb->root_inode) | |
639 | inode = igrab(osb->root_inode); | |
640 | ||
641 | if (status < 0) | |
642 | goto read_super_error; | |
643 | ||
644 | if (!inode) { | |
645 | status = -EIO; | |
646 | mlog_errno(status); | |
647 | goto read_super_error; | |
648 | } | |
649 | ||
650 | root = d_alloc_root(inode); | |
651 | if (!root) { | |
652 | status = -ENOMEM; | |
653 | mlog_errno(status); | |
654 | goto read_super_error; | |
655 | } | |
656 | ||
657 | sb->s_root = root; | |
658 | ||
659 | ocfs2_complete_mount_recovery(osb); | |
660 | ||
c271c5c2 SM |
661 | if (ocfs2_mount_local(osb)) |
662 | snprintf(nodestr, sizeof(nodestr), "local"); | |
663 | else | |
664 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
665 | ||
666 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 667 | "with %s data mode.\n", |
c271c5c2 | 668 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
669 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
670 | "ordered"); | |
671 | ||
672 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
673 | wake_up(&osb->osb_mount_event); | |
674 | ||
675 | mlog_exit(status); | |
676 | return status; | |
677 | ||
678 | read_super_error: | |
679 | if (bh != NULL) | |
680 | brelse(bh); | |
681 | ||
682 | if (inode) | |
683 | iput(inode); | |
684 | ||
685 | if (osb) { | |
686 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
687 | wake_up(&osb->osb_mount_event); | |
688 | ocfs2_dismount_volume(sb, 1); | |
689 | } | |
690 | ||
691 | mlog_exit(status); | |
692 | return status; | |
693 | } | |
694 | ||
454e2398 DH |
695 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
696 | int flags, | |
697 | const char *dev_name, | |
698 | void *data, | |
699 | struct vfsmount *mnt) | |
ccd979bd | 700 | { |
454e2398 DH |
701 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
702 | mnt); | |
ccd979bd MF |
703 | } |
704 | ||
705 | static struct file_system_type ocfs2_fs_type = { | |
706 | .owner = THIS_MODULE, | |
707 | .name = "ocfs2", | |
708 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
709 | * the fs? */ | |
710 | .kill_sb = kill_block_super, /* set to the generic one | |
711 | * right now, but do we | |
712 | * need to change that? */ | |
1ba9da2f | 713 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
714 | .next = NULL |
715 | }; | |
716 | ||
717 | static int ocfs2_parse_options(struct super_block *sb, | |
718 | char *options, | |
719 | unsigned long *mount_opt, | |
baf4661a | 720 | s16 *slot, |
ccd979bd MF |
721 | int is_remount) |
722 | { | |
723 | int status; | |
724 | char *p; | |
725 | ||
726 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
727 | options ? options : "(none)"); | |
728 | ||
729 | *mount_opt = 0; | |
baf4661a | 730 | *slot = OCFS2_INVALID_SLOT; |
ccd979bd MF |
731 | |
732 | if (!options) { | |
733 | status = 1; | |
734 | goto bail; | |
735 | } | |
736 | ||
737 | while ((p = strsep(&options, ",")) != NULL) { | |
738 | int token, option; | |
739 | substring_t args[MAX_OPT_ARGS]; | |
7f1a37e3 | 740 | struct ocfs2_super * osb = OCFS2_SB(sb); |
ccd979bd MF |
741 | |
742 | if (!*p) | |
743 | continue; | |
744 | ||
745 | token = match_token(p, tokens, args); | |
746 | switch (token) { | |
747 | case Opt_hb_local: | |
748 | *mount_opt |= OCFS2_MOUNT_HB_LOCAL; | |
749 | break; | |
750 | case Opt_hb_none: | |
751 | *mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; | |
752 | break; | |
753 | case Opt_barrier: | |
754 | if (match_int(&args[0], &option)) { | |
755 | status = 0; | |
756 | goto bail; | |
757 | } | |
758 | if (option) | |
759 | *mount_opt |= OCFS2_MOUNT_BARRIER; | |
760 | else | |
761 | *mount_opt &= ~OCFS2_MOUNT_BARRIER; | |
762 | break; | |
763 | case Opt_intr: | |
764 | *mount_opt &= ~OCFS2_MOUNT_NOINTR; | |
765 | break; | |
766 | case Opt_nointr: | |
767 | *mount_opt |= OCFS2_MOUNT_NOINTR; | |
768 | break; | |
769 | case Opt_err_panic: | |
770 | *mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
771 | break; | |
772 | case Opt_err_ro: | |
773 | *mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; | |
774 | break; | |
775 | case Opt_data_ordered: | |
776 | *mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; | |
777 | break; | |
778 | case Opt_data_writeback: | |
779 | *mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; | |
780 | break; | |
7f1a37e3 TY |
781 | case Opt_atime_quantum: |
782 | if (match_int(&args[0], &option)) { | |
783 | status = 0; | |
784 | goto bail; | |
785 | } | |
786 | if (option >= 0) | |
787 | osb->s_atime_quantum = option; | |
788 | else | |
789 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
790 | break; | |
baf4661a SM |
791 | case Opt_slot: |
792 | option = 0; | |
793 | if (match_int(&args[0], &option)) { | |
794 | status = 0; | |
795 | goto bail; | |
796 | } | |
797 | if (option) | |
798 | *slot = (s16)option; | |
799 | break; | |
ccd979bd MF |
800 | default: |
801 | mlog(ML_ERROR, | |
802 | "Unrecognized mount option \"%s\" " | |
803 | "or missing value\n", p); | |
804 | status = 0; | |
805 | goto bail; | |
806 | } | |
807 | } | |
808 | ||
809 | status = 1; | |
810 | ||
811 | bail: | |
812 | mlog_exit(status); | |
813 | return status; | |
814 | } | |
815 | ||
816 | static int __init ocfs2_init(void) | |
817 | { | |
818 | int status; | |
819 | ||
820 | mlog_entry_void(); | |
821 | ||
822 | ocfs2_print_version(); | |
823 | ||
ccd979bd MF |
824 | status = init_ocfs2_uptodate_cache(); |
825 | if (status < 0) { | |
826 | mlog_errno(status); | |
827 | goto leave; | |
828 | } | |
829 | ||
830 | status = ocfs2_initialize_mem_caches(); | |
831 | if (status < 0) { | |
832 | mlog_errno(status); | |
833 | goto leave; | |
834 | } | |
835 | ||
836 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
837 | if (!ocfs2_wq) { | |
838 | status = -ENOMEM; | |
839 | goto leave; | |
840 | } | |
841 | ||
ccd979bd MF |
842 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
843 | if (!ocfs2_debugfs_root) { | |
844 | status = -EFAULT; | |
845 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
846 | } | |
847 | ||
848 | leave: | |
849 | if (status < 0) { | |
850 | ocfs2_free_mem_caches(); | |
851 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
852 | } |
853 | ||
854 | mlog_exit(status); | |
855 | ||
856 | if (status >= 0) { | |
857 | return register_filesystem(&ocfs2_fs_type); | |
858 | } else | |
859 | return -1; | |
860 | } | |
861 | ||
862 | static void __exit ocfs2_exit(void) | |
863 | { | |
864 | mlog_entry_void(); | |
865 | ||
866 | if (ocfs2_wq) { | |
867 | flush_workqueue(ocfs2_wq); | |
868 | destroy_workqueue(ocfs2_wq); | |
869 | } | |
870 | ||
871 | debugfs_remove(ocfs2_debugfs_root); | |
872 | ||
873 | ocfs2_free_mem_caches(); | |
874 | ||
875 | unregister_filesystem(&ocfs2_fs_type); | |
876 | ||
ccd979bd MF |
877 | exit_ocfs2_uptodate_cache(); |
878 | ||
879 | mlog_exit_void(); | |
880 | } | |
881 | ||
882 | static void ocfs2_put_super(struct super_block *sb) | |
883 | { | |
884 | mlog_entry("(0x%p)\n", sb); | |
885 | ||
886 | ocfs2_sync_blockdev(sb); | |
887 | ocfs2_dismount_volume(sb, 0); | |
888 | ||
889 | mlog_exit_void(); | |
890 | } | |
891 | ||
726c3342 | 892 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
893 | { |
894 | struct ocfs2_super *osb; | |
895 | u32 numbits, freebits; | |
896 | int status; | |
897 | struct ocfs2_dinode *bm_lock; | |
898 | struct buffer_head *bh = NULL; | |
899 | struct inode *inode = NULL; | |
900 | ||
726c3342 | 901 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 902 | |
726c3342 | 903 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
904 | |
905 | inode = ocfs2_get_system_file_inode(osb, | |
906 | GLOBAL_BITMAP_SYSTEM_INODE, | |
907 | OCFS2_INVALID_SLOT); | |
908 | if (!inode) { | |
909 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
910 | status = -EIO; | |
911 | goto bail; | |
912 | } | |
913 | ||
4bcec184 | 914 | status = ocfs2_meta_lock(inode, &bh, 0); |
ccd979bd MF |
915 | if (status < 0) { |
916 | mlog_errno(status); | |
917 | goto bail; | |
918 | } | |
919 | ||
920 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
921 | ||
922 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
923 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
924 | ||
925 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 926 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
927 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
928 | buf->f_blocks = ((sector_t) numbits) * | |
929 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
930 | buf->f_bfree = ((sector_t) freebits) * | |
931 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
932 | buf->f_bavail = buf->f_bfree; | |
933 | buf->f_files = numbits; | |
934 | buf->f_ffree = freebits; | |
935 | ||
936 | brelse(bh); | |
937 | ||
938 | ocfs2_meta_unlock(inode, 0); | |
939 | status = 0; | |
940 | bail: | |
941 | if (inode) | |
942 | iput(inode); | |
943 | ||
944 | mlog_exit(status); | |
945 | ||
946 | return status; | |
947 | } | |
948 | ||
949 | static void ocfs2_inode_init_once(void *data, | |
e18b890b | 950 | struct kmem_cache *cachep, |
ccd979bd MF |
951 | unsigned long flags) |
952 | { | |
953 | struct ocfs2_inode_info *oi = data; | |
954 | ||
a35afb83 CL |
955 | oi->ip_flags = 0; |
956 | oi->ip_open_count = 0; | |
957 | spin_lock_init(&oi->ip_lock); | |
958 | ocfs2_extent_map_init(&oi->vfs_inode); | |
959 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
960 | oi->ip_created_trans = 0; | |
961 | oi->ip_last_trans = 0; | |
962 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 963 | |
a35afb83 CL |
964 | init_rwsem(&oi->ip_alloc_sem); |
965 | mutex_init(&oi->ip_io_mutex); | |
ccd979bd | 966 | |
a35afb83 CL |
967 | oi->ip_blkno = 0ULL; |
968 | oi->ip_clusters = 0; | |
ccd979bd | 969 | |
a35afb83 CL |
970 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
971 | ocfs2_lock_res_init_once(&oi->ip_meta_lockres); | |
972 | ocfs2_lock_res_init_once(&oi->ip_data_lockres); | |
973 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); | |
ccd979bd | 974 | |
a35afb83 | 975 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 976 | |
a35afb83 | 977 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
978 | } |
979 | ||
980 | static int ocfs2_initialize_mem_caches(void) | |
981 | { | |
982 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
983 | sizeof(struct ocfs2_inode_info), |
984 | 0, | |
985 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
986 | SLAB_MEM_SPREAD), | |
20c2df83 | 987 | ocfs2_inode_init_once); |
ccd979bd MF |
988 | if (!ocfs2_inode_cachep) |
989 | return -ENOMEM; | |
990 | ||
ccd979bd MF |
991 | return 0; |
992 | } | |
993 | ||
994 | static void ocfs2_free_mem_caches(void) | |
995 | { | |
996 | if (ocfs2_inode_cachep) | |
997 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd MF |
998 | |
999 | ocfs2_inode_cachep = NULL; | |
ccd979bd MF |
1000 | } |
1001 | ||
1002 | static int ocfs2_get_sector(struct super_block *sb, | |
1003 | struct buffer_head **bh, | |
1004 | int block, | |
1005 | int sect_size) | |
1006 | { | |
1007 | if (!sb_set_blocksize(sb, sect_size)) { | |
1008 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1009 | return -EIO; | |
1010 | } | |
1011 | ||
1012 | *bh = sb_getblk(sb, block); | |
1013 | if (!*bh) { | |
1014 | mlog_errno(-EIO); | |
1015 | return -EIO; | |
1016 | } | |
1017 | lock_buffer(*bh); | |
1018 | if (!buffer_dirty(*bh)) | |
1019 | clear_buffer_uptodate(*bh); | |
1020 | unlock_buffer(*bh); | |
1021 | ll_rw_block(READ, 1, bh); | |
1022 | wait_on_buffer(*bh); | |
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | /* ocfs2 1.0 only allows one cluster and node identity per kernel image. */ | |
1027 | static int ocfs2_fill_local_node_info(struct ocfs2_super *osb) | |
1028 | { | |
1029 | int status; | |
1030 | ||
1031 | /* XXX hold a ref on the node while mounte? easy enough, if | |
1032 | * desirable. */ | |
c271c5c2 SM |
1033 | if (ocfs2_mount_local(osb)) |
1034 | osb->node_num = 0; | |
1035 | else | |
1036 | osb->node_num = o2nm_this_node(); | |
1037 | ||
ccd979bd MF |
1038 | if (osb->node_num == O2NM_MAX_NODES) { |
1039 | mlog(ML_ERROR, "could not find this host's node number\n"); | |
1040 | status = -ENOENT; | |
1041 | goto bail; | |
1042 | } | |
1043 | ||
781ee3e2 | 1044 | mlog(0, "I am node %d\n", osb->node_num); |
ccd979bd MF |
1045 | |
1046 | status = 0; | |
1047 | bail: | |
1048 | return status; | |
1049 | } | |
1050 | ||
1051 | static int ocfs2_mount_volume(struct super_block *sb) | |
1052 | { | |
1053 | int status = 0; | |
1054 | int unlock_super = 0; | |
1055 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1056 | ||
1057 | mlog_entry_void(); | |
1058 | ||
1059 | if (ocfs2_is_hard_readonly(osb)) | |
1060 | goto leave; | |
1061 | ||
1062 | status = ocfs2_fill_local_node_info(osb); | |
1063 | if (status < 0) { | |
1064 | mlog_errno(status); | |
1065 | goto leave; | |
1066 | } | |
1067 | ||
1068 | status = ocfs2_register_hb_callbacks(osb); | |
1069 | if (status < 0) { | |
1070 | mlog_errno(status); | |
1071 | goto leave; | |
1072 | } | |
1073 | ||
1074 | status = ocfs2_dlm_init(osb); | |
1075 | if (status < 0) { | |
1076 | mlog_errno(status); | |
1077 | goto leave; | |
1078 | } | |
1079 | ||
1080 | /* requires vote_thread to be running. */ | |
1081 | status = ocfs2_register_net_handlers(osb); | |
1082 | if (status < 0) { | |
1083 | mlog_errno(status); | |
1084 | goto leave; | |
1085 | } | |
1086 | ||
1087 | status = ocfs2_super_lock(osb, 1); | |
1088 | if (status < 0) { | |
1089 | mlog_errno(status); | |
1090 | goto leave; | |
1091 | } | |
1092 | unlock_super = 1; | |
1093 | ||
1094 | /* This will load up the node map and add ourselves to it. */ | |
1095 | status = ocfs2_find_slot(osb); | |
1096 | if (status < 0) { | |
1097 | mlog_errno(status); | |
1098 | goto leave; | |
1099 | } | |
1100 | ||
1101 | ocfs2_populate_mounted_map(osb); | |
1102 | ||
1103 | /* load all node-local system inodes */ | |
1104 | status = ocfs2_init_local_system_inodes(osb); | |
1105 | if (status < 0) { | |
1106 | mlog_errno(status); | |
1107 | goto leave; | |
1108 | } | |
1109 | ||
1110 | status = ocfs2_check_volume(osb); | |
1111 | if (status < 0) { | |
1112 | mlog_errno(status); | |
1113 | goto leave; | |
1114 | } | |
1115 | ||
1116 | status = ocfs2_truncate_log_init(osb); | |
1117 | if (status < 0) { | |
1118 | mlog_errno(status); | |
1119 | goto leave; | |
1120 | } | |
1121 | ||
c271c5c2 SM |
1122 | if (ocfs2_mount_local(osb)) |
1123 | goto leave; | |
1124 | ||
ccd979bd MF |
1125 | /* This should be sent *after* we recovered our journal as it |
1126 | * will cause other nodes to unmark us as needing | |
1127 | * recovery. However, we need to send it *before* dropping the | |
1128 | * super block lock as otherwise their recovery threads might | |
1129 | * try to clean us up while we're live! */ | |
1130 | status = ocfs2_request_mount_vote(osb); | |
1131 | if (status < 0) | |
1132 | mlog_errno(status); | |
1133 | ||
1134 | leave: | |
1135 | if (unlock_super) | |
1136 | ocfs2_super_unlock(osb, 1); | |
1137 | ||
1138 | mlog_exit(status); | |
1139 | return status; | |
1140 | } | |
1141 | ||
1142 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
1143 | * memory barriers to make sure that we'll see the null task before | |
1144 | * being woken up */ | |
1145 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
1146 | { | |
1147 | mb(); | |
1148 | return osb->recovery_thread_task != NULL; | |
1149 | } | |
1150 | ||
1151 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) | |
1152 | { | |
1153 | int tmp; | |
1154 | struct ocfs2_super *osb = NULL; | |
c271c5c2 | 1155 | char nodestr[8]; |
ccd979bd MF |
1156 | |
1157 | mlog_entry("(0x%p)\n", sb); | |
1158 | ||
1159 | BUG_ON(!sb); | |
1160 | osb = OCFS2_SB(sb); | |
1161 | BUG_ON(!osb); | |
1162 | ||
1163 | ocfs2_shutdown_local_alloc(osb); | |
1164 | ||
1165 | ocfs2_truncate_log_shutdown(osb); | |
1166 | ||
1167 | /* disable any new recovery threads and wait for any currently | |
1168 | * running ones to exit. Do this before setting the vol_state. */ | |
c74ec2f7 | 1169 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1170 | osb->disable_recovery = 1; |
c74ec2f7 | 1171 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1172 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); |
1173 | ||
1174 | /* At this point, we know that no more recovery threads can be | |
1175 | * launched, so wait for any recovery completion work to | |
1176 | * complete. */ | |
1177 | flush_workqueue(ocfs2_wq); | |
1178 | ||
1179 | ocfs2_journal_shutdown(osb); | |
1180 | ||
1181 | ocfs2_sync_blockdev(sb); | |
1182 | ||
1183 | /* No dlm means we've failed during mount, so skip all the | |
1184 | * steps which depended on that to complete. */ | |
1185 | if (osb->dlm) { | |
1186 | tmp = ocfs2_super_lock(osb, 1); | |
1187 | if (tmp < 0) { | |
1188 | mlog_errno(tmp); | |
1189 | return; | |
1190 | } | |
1191 | ||
1192 | tmp = ocfs2_request_umount_vote(osb); | |
1193 | if (tmp < 0) | |
1194 | mlog_errno(tmp); | |
1195 | ||
1196 | if (osb->slot_num != OCFS2_INVALID_SLOT) | |
1197 | ocfs2_put_slot(osb); | |
1198 | ||
1199 | ocfs2_super_unlock(osb, 1); | |
1200 | } | |
1201 | ||
1202 | ocfs2_release_system_inodes(osb); | |
1203 | ||
1204 | if (osb->dlm) { | |
1205 | ocfs2_unregister_net_handlers(osb); | |
1206 | ||
1207 | ocfs2_dlm_shutdown(osb); | |
1208 | } | |
1209 | ||
1210 | ocfs2_clear_hb_callbacks(osb); | |
1211 | ||
1212 | debugfs_remove(osb->osb_debug_root); | |
1213 | ||
1214 | if (!mnt_err) | |
1215 | ocfs2_stop_heartbeat(osb); | |
1216 | ||
1217 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1218 | ||
c271c5c2 SM |
1219 | if (ocfs2_mount_local(osb)) |
1220 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1221 | else | |
1222 | snprintf(nodestr, sizeof(nodestr), "%d", osb->node_num); | |
1223 | ||
1224 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1225 | osb->dev_str, nodestr); | |
ccd979bd MF |
1226 | |
1227 | ocfs2_delete_osb(osb); | |
1228 | kfree(osb); | |
1229 | sb->s_dev = 0; | |
1230 | sb->s_fs_info = NULL; | |
1231 | } | |
1232 | ||
1233 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1234 | unsigned uuid_bytes) | |
1235 | { | |
1236 | int i, ret; | |
1237 | char *ptr; | |
1238 | ||
1239 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1240 | ||
cd861280 | 1241 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1242 | if (osb->uuid_str == NULL) |
1243 | return -ENOMEM; | |
1244 | ||
ccd979bd MF |
1245 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1246 | /* print with null */ | |
1247 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1248 | if (ret != 2) /* drop super cleans up */ | |
1249 | return -EINVAL; | |
1250 | /* then only advance past the last char */ | |
1251 | ptr += 2; | |
1252 | } | |
1253 | ||
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | static int ocfs2_initialize_super(struct super_block *sb, | |
1258 | struct buffer_head *bh, | |
1259 | int sector_size) | |
1260 | { | |
1261 | int status = 0; | |
1262 | int i; | |
1263 | struct ocfs2_dinode *di = NULL; | |
1264 | struct inode *inode = NULL; | |
1265 | struct buffer_head *bitmap_bh = NULL; | |
1266 | struct ocfs2_journal *journal; | |
1267 | __le32 uuid_net_key; | |
1268 | struct ocfs2_super *osb; | |
1269 | ||
1270 | mlog_entry_void(); | |
1271 | ||
cd861280 | 1272 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1273 | if (!osb) { |
1274 | status = -ENOMEM; | |
1275 | mlog_errno(status); | |
1276 | goto bail; | |
1277 | } | |
1278 | ||
1279 | sb->s_fs_info = osb; | |
1280 | sb->s_op = &ocfs2_sops; | |
1281 | sb->s_export_op = &ocfs2_export_ops; | |
1282 | sb->s_flags |= MS_NOATIME; | |
1283 | /* this is needed to support O_LARGEFILE */ | |
1284 | sb->s_maxbytes = ocfs2_max_file_offset(sb->s_blocksize_bits); | |
1285 | ||
1286 | osb->sb = sb; | |
1287 | /* Save off for ocfs2_rw_direct */ | |
1288 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1289 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd MF |
1290 | |
1291 | osb->net_response_ids = 0; | |
1292 | spin_lock_init(&osb->net_response_lock); | |
1293 | INIT_LIST_HEAD(&osb->net_response_list); | |
1294 | ||
1295 | INIT_LIST_HEAD(&osb->osb_net_handlers); | |
1296 | init_waitqueue_head(&osb->recovery_event); | |
1297 | spin_lock_init(&osb->vote_task_lock); | |
1298 | init_waitqueue_head(&osb->vote_event); | |
1299 | osb->vote_work_sequence = 0; | |
1300 | osb->vote_wake_sequence = 0; | |
1301 | INIT_LIST_HEAD(&osb->blocked_lock_list); | |
1302 | osb->blocked_lock_count = 0; | |
1303 | INIT_LIST_HEAD(&osb->vote_list); | |
1304 | spin_lock_init(&osb->osb_lock); | |
1305 | ||
1306 | atomic_set(&osb->alloc_stats.moves, 0); | |
1307 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1308 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1309 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1310 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1311 | ||
1312 | ocfs2_init_node_maps(osb); | |
1313 | ||
1314 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1315 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1316 | ||
c74ec2f7 | 1317 | mutex_init(&osb->recovery_lock); |
ccd979bd MF |
1318 | |
1319 | osb->disable_recovery = 0; | |
1320 | osb->recovery_thread_task = NULL; | |
1321 | ||
1322 | init_waitqueue_head(&osb->checkpoint_event); | |
1323 | atomic_set(&osb->needs_checkpoint, 0); | |
1324 | ||
7f1a37e3 TY |
1325 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1326 | ||
ccd979bd MF |
1327 | osb->node_num = O2NM_INVALID_NODE_NUM; |
1328 | osb->slot_num = OCFS2_INVALID_SLOT; | |
1329 | ||
1330 | osb->local_alloc_state = OCFS2_LA_UNUSED; | |
1331 | osb->local_alloc_bh = NULL; | |
1332 | ||
1333 | ocfs2_setup_hb_callbacks(osb); | |
1334 | ||
1335 | init_waitqueue_head(&osb->osb_mount_event); | |
1336 | ||
1337 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
1338 | if (!osb->vol_label) { | |
1339 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
1340 | status = -ENOMEM; | |
1341 | goto bail; | |
1342 | } | |
1343 | ||
ccd979bd MF |
1344 | di = (struct ocfs2_dinode *)bh->b_data; |
1345 | ||
1346 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); | |
1347 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
1348 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
1349 | osb->max_slots); | |
1350 | status = -EINVAL; | |
1351 | goto bail; | |
1352 | } | |
781ee3e2 | 1353 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 1354 | |
b4df6ed8 MF |
1355 | init_waitqueue_head(&osb->osb_wipe_event); |
1356 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
1357 | sizeof(*osb->osb_orphan_wipes), | |
1358 | GFP_KERNEL); | |
1359 | if (!osb->osb_orphan_wipes) { | |
1360 | status = -ENOMEM; | |
1361 | mlog_errno(status); | |
1362 | goto bail; | |
1363 | } | |
1364 | ||
ccd979bd MF |
1365 | osb->s_feature_compat = |
1366 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
1367 | osb->s_feature_ro_compat = | |
1368 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
1369 | osb->s_feature_incompat = | |
1370 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
1371 | ||
1372 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
1373 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
1374 | "optional features (%x).\n", i); | |
1375 | status = -EINVAL; | |
1376 | goto bail; | |
1377 | } | |
1378 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
1379 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
1380 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
1381 | "unsupported optional features (%x).\n", i); | |
1382 | status = -EINVAL; | |
1383 | goto bail; | |
1384 | } | |
1385 | ||
1386 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); | |
1387 | ||
1388 | /* FIXME | |
1389 | * This should be done in ocfs2_journal_init(), but unknown | |
1390 | * ordering issues will cause the filesystem to crash. | |
1391 | * If anyone wants to figure out what part of the code | |
1392 | * refers to osb->journal before ocfs2_journal_init() is run, | |
1393 | * be my guest. | |
1394 | */ | |
1395 | /* initialize our journal structure */ | |
1396 | ||
cd861280 | 1397 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
1398 | if (!journal) { |
1399 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
1400 | status = -ENOMEM; | |
1401 | goto bail; | |
1402 | } | |
1403 | osb->journal = journal; | |
1404 | journal->j_osb = osb; | |
1405 | ||
1406 | atomic_set(&journal->j_num_trans, 0); | |
1407 | init_rwsem(&journal->j_trans_barrier); | |
1408 | init_waitqueue_head(&journal->j_checkpointed); | |
1409 | spin_lock_init(&journal->j_lock); | |
1410 | journal->j_trans_id = (unsigned long) 1; | |
1411 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 1412 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
1413 | journal->j_state = OCFS2_JOURNAL_FREE; |
1414 | ||
1415 | /* get some pseudo constants for clustersize bits */ | |
1416 | osb->s_clustersize_bits = | |
1417 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
1418 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
1419 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
1420 | ||
1421 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
1422 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
1423 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
1424 | osb->s_clustersize); | |
1425 | status = -EINVAL; | |
1426 | goto bail; | |
1427 | } | |
1428 | ||
1429 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
1430 | > (u32)~0UL) { | |
1431 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
1432 | "what jbd can address in 32 bits.\n"); | |
1433 | status = -EINVAL; | |
1434 | goto bail; | |
1435 | } | |
1436 | ||
1437 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
1438 | sizeof(di->id2.i_super.s_uuid))) { | |
1439 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
1440 | status = -ENOMEM; | |
1441 | goto bail; | |
1442 | } | |
1443 | ||
78427043 | 1444 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
1445 | osb->net_key = le32_to_cpu(uuid_net_key); |
1446 | ||
1447 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
1448 | osb->vol_label[63] = '\0'; | |
1449 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
1450 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
1451 | osb->first_cluster_group_blkno = | |
1452 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
1453 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
1454 | mlog(0, "vol_label: %s\n", osb->vol_label); | |
1455 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
1456 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
1457 | (unsigned long long)osb->root_blkno, | |
1458 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
1459 | |
1460 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
1461 | if (!osb->osb_dlm_debug) { | |
1462 | status = -ENOMEM; | |
1463 | mlog_errno(status); | |
1464 | goto bail; | |
1465 | } | |
1466 | ||
1467 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
1468 | ||
1469 | /* load root, system_dir, and all global system inodes */ | |
1470 | status = ocfs2_init_global_system_inodes(osb); | |
1471 | if (status < 0) { | |
1472 | mlog_errno(status); | |
1473 | goto bail; | |
1474 | } | |
1475 | ||
1476 | /* | |
1477 | * global bitmap | |
1478 | */ | |
1479 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
1480 | OCFS2_INVALID_SLOT); | |
1481 | if (!inode) { | |
1482 | status = -EINVAL; | |
1483 | mlog_errno(status); | |
1484 | goto bail; | |
1485 | } | |
1486 | ||
1487 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
1488 | ||
101ebf25 MF |
1489 | /* We don't have a cluster lock on the bitmap here because |
1490 | * we're only interested in static information and the extra | |
1491 | * complexity at mount time isn't worht it. Don't pass the | |
1492 | * inode in to the read function though as we don't want it to | |
1493 | * be put in the cache. */ | |
ccd979bd | 1494 | status = ocfs2_read_block(osb, osb->bitmap_blkno, &bitmap_bh, 0, |
101ebf25 | 1495 | NULL); |
ccd979bd MF |
1496 | iput(inode); |
1497 | if (status < 0) { | |
1498 | mlog_errno(status); | |
1499 | goto bail; | |
1500 | } | |
1501 | ||
1502 | di = (struct ocfs2_dinode *) bitmap_bh->b_data; | |
1503 | osb->bitmap_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg); | |
ccd979bd | 1504 | brelse(bitmap_bh); |
b0697053 MF |
1505 | mlog(0, "cluster bitmap inode: %llu, clusters per group: %u\n", |
1506 | (unsigned long long)osb->bitmap_blkno, osb->bitmap_cpg); | |
ccd979bd MF |
1507 | |
1508 | status = ocfs2_init_slot_info(osb); | |
1509 | if (status < 0) { | |
1510 | mlog_errno(status); | |
1511 | goto bail; | |
1512 | } | |
1513 | ||
ccd979bd MF |
1514 | bail: |
1515 | mlog_exit(status); | |
1516 | return status; | |
1517 | } | |
1518 | ||
1519 | /* | |
1520 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
1521 | * -EINVAL if there is a bad superblock | |
1522 | * 0 on success | |
1523 | */ | |
1524 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
1525 | struct buffer_head *bh, | |
1526 | u32 blksz) | |
1527 | { | |
1528 | int status = -EAGAIN; | |
1529 | ||
1530 | mlog_entry_void(); | |
1531 | ||
1532 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
1533 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
1534 | status = -EINVAL; | |
1535 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
1536 | mlog(ML_ERROR, "found superblock with incorrect block " | |
1537 | "size: found %u, should be %u\n", | |
1538 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
1539 | blksz); | |
1540 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
1541 | OCFS2_MAJOR_REV_LEVEL || | |
1542 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
1543 | OCFS2_MINOR_REV_LEVEL) { | |
1544 | mlog(ML_ERROR, "found superblock with bad version: " | |
1545 | "found %u.%u, should be %u.%u\n", | |
1546 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
1547 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
1548 | OCFS2_MAJOR_REV_LEVEL, | |
1549 | OCFS2_MINOR_REV_LEVEL); | |
1550 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
1551 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 1552 | "found %llu, should be %llu\n", |
1ca1a111 | 1553 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 1554 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
1555 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
1556 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
1557 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
1558 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
1559 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
1560 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
1561 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
1562 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
1563 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
1564 | mlog(ML_ERROR, | |
1565 | "Superblock slots found greater than file system " | |
1566 | "maximum: found %u, max %u\n", | |
1567 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
1568 | OCFS2_MAX_SLOTS); | |
1569 | } else { | |
1570 | /* found it! */ | |
1571 | status = 0; | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | mlog_exit(status); | |
1576 | return status; | |
1577 | } | |
1578 | ||
1579 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
1580 | { | |
1581 | int status = 0; | |
1582 | int dirty; | |
c271c5c2 | 1583 | int local; |
ccd979bd MF |
1584 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
1585 | * recover | |
1586 | * ourselves. */ | |
1587 | ||
1588 | mlog_entry_void(); | |
1589 | ||
1590 | /* Init our journal object. */ | |
1591 | status = ocfs2_journal_init(osb->journal, &dirty); | |
1592 | if (status < 0) { | |
1593 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
1594 | goto finally; | |
1595 | } | |
1596 | ||
1597 | /* If the journal was unmounted cleanly then we don't want to | |
1598 | * recover anything. Otherwise, journal_load will do that | |
1599 | * dirty work for us :) */ | |
1600 | if (!dirty) { | |
1601 | status = ocfs2_journal_wipe(osb->journal, 0); | |
1602 | if (status < 0) { | |
1603 | mlog_errno(status); | |
1604 | goto finally; | |
1605 | } | |
1606 | } else { | |
1607 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
1608 | "recovering volume.\n"); | |
1609 | } | |
1610 | ||
c271c5c2 SM |
1611 | local = ocfs2_mount_local(osb); |
1612 | ||
ccd979bd | 1613 | /* will play back anything left in the journal. */ |
c271c5c2 | 1614 | ocfs2_journal_load(osb->journal, local); |
ccd979bd MF |
1615 | |
1616 | if (dirty) { | |
1617 | /* recover my local alloc if we didn't unmount cleanly. */ | |
1618 | status = ocfs2_begin_local_alloc_recovery(osb, | |
1619 | osb->slot_num, | |
1620 | &local_alloc); | |
1621 | if (status < 0) { | |
1622 | mlog_errno(status); | |
1623 | goto finally; | |
1624 | } | |
1625 | /* we complete the recovery process after we've marked | |
1626 | * ourselves as mounted. */ | |
1627 | } | |
1628 | ||
1629 | mlog(0, "Journal loaded.\n"); | |
1630 | ||
1631 | status = ocfs2_load_local_alloc(osb); | |
1632 | if (status < 0) { | |
1633 | mlog_errno(status); | |
1634 | goto finally; | |
1635 | } | |
1636 | ||
1637 | if (dirty) { | |
1638 | /* Recovery will be completed after we've mounted the | |
1639 | * rest of the volume. */ | |
1640 | osb->dirty = 1; | |
1641 | osb->local_alloc_copy = local_alloc; | |
1642 | local_alloc = NULL; | |
1643 | } | |
1644 | ||
1645 | /* go through each journal, trylock it and if you get the | |
1646 | * lock, and it's marked as dirty, set the bit in the recover | |
1647 | * map and launch a recovery thread for it. */ | |
1648 | status = ocfs2_mark_dead_nodes(osb); | |
1649 | if (status < 0) | |
1650 | mlog_errno(status); | |
1651 | ||
1652 | finally: | |
1653 | if (local_alloc) | |
1654 | kfree(local_alloc); | |
1655 | ||
1656 | mlog_exit(status); | |
1657 | return status; | |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * The routine gets called from dismount or close whenever a dismount on | |
1662 | * volume is requested and the osb open count becomes 1. | |
1663 | * It will remove the osb from the global list and also free up all the | |
1664 | * initialized resources and fileobject. | |
1665 | */ | |
1666 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
1667 | { | |
1668 | mlog_entry_void(); | |
1669 | ||
1670 | /* This function assumes that the caller has the main osb resource */ | |
1671 | ||
1672 | if (osb->slot_info) | |
1673 | ocfs2_free_slot_info(osb->slot_info); | |
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); |