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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
cf45b752 | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
b3b94faa DT |
15 | #include <linux/blkdev.h> |
16 | #include <linux/kthread.h> | |
86384605 AD |
17 | #include <linux/namei.h> |
18 | #include <linux/mount.h> | |
5c676f6d | 19 | #include <linux/gfs2_ondisk.h> |
7d308590 | 20 | #include <linux/lm_interface.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 23 | #include "incore.h" |
da6dd40d | 24 | #include "bmap.h" |
b3b94faa DT |
25 | #include "daemon.h" |
26 | #include "glock.h" | |
27 | #include "glops.h" | |
28 | #include "inode.h" | |
b3b94faa | 29 | #include "mount.h" |
b3b94faa DT |
30 | #include "recovery.h" |
31 | #include "rgrp.h" | |
32 | #include "super.h" | |
b3b94faa | 33 | #include "sys.h" |
5c676f6d | 34 | #include "util.h" |
bb3b0e3d | 35 | #include "log.h" |
b3b94faa DT |
36 | |
37 | #define DO 0 | |
38 | #define UNDO 1 | |
39 | ||
9b8df98f SW |
40 | static const u32 gfs2_old_fs_formats[] = { |
41 | 0 | |
42 | }; | |
43 | ||
44 | static const u32 gfs2_old_multihost_formats[] = { | |
45 | 0 | |
46 | }; | |
47 | ||
48 | /** | |
49 | * gfs2_tune_init - Fill a gfs2_tune structure with default values | |
50 | * @gt: tune | |
51 | * | |
52 | */ | |
53 | ||
54 | static void gfs2_tune_init(struct gfs2_tune *gt) | |
55 | { | |
56 | spin_lock_init(>->gt_spin); | |
57 | ||
58 | gt->gt_demote_secs = 300; | |
59 | gt->gt_incore_log_blocks = 1024; | |
60 | gt->gt_log_flush_secs = 60; | |
61 | gt->gt_recoverd_secs = 60; | |
62 | gt->gt_logd_secs = 1; | |
9b8df98f SW |
63 | gt->gt_quota_simul_sync = 64; |
64 | gt->gt_quota_warn_period = 10; | |
65 | gt->gt_quota_scale_num = 1; | |
66 | gt->gt_quota_scale_den = 1; | |
67 | gt->gt_quota_cache_secs = 300; | |
68 | gt->gt_quota_quantum = 60; | |
9b8df98f SW |
69 | gt->gt_new_files_jdata = 0; |
70 | gt->gt_max_readahead = 1 << 18; | |
71 | gt->gt_stall_secs = 600; | |
72 | gt->gt_complain_secs = 10; | |
73 | gt->gt_statfs_quantum = 30; | |
74 | gt->gt_statfs_slow = 0; | |
75 | } | |
76 | ||
b3b94faa DT |
77 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
78 | { | |
79 | struct gfs2_sbd *sdp; | |
b3b94faa | 80 | |
85d1da67 | 81 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
82 | if (!sdp) |
83 | return NULL; | |
84 | ||
5c676f6d | 85 | sb->s_fs_info = sdp; |
b3b94faa DT |
86 | sdp->sd_vfs = sb; |
87 | ||
88 | gfs2_tune_init(&sdp->sd_tune); | |
89 | ||
b3b94faa DT |
90 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); |
91 | spin_lock_init(&sdp->sd_reclaim_lock); | |
92 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
b3b94faa | 93 | |
f55ab26a | 94 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 95 | spin_lock_init(&sdp->sd_statfs_spin); |
b3b94faa DT |
96 | |
97 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 98 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
99 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
100 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
b3b94faa DT |
101 | |
102 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
103 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 104 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 105 | |
b3b94faa DT |
106 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
107 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 108 | mutex_init(&sdp->sd_quota_mutex); |
37b2c837 | 109 | init_waitqueue_head(&sdp->sd_quota_wait); |
b3b94faa DT |
110 | |
111 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa | 112 | |
b3b94faa DT |
113 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
114 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
115 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
116 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
d7b616e2 | 117 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
b3b94faa | 118 | |
71b86f56 | 119 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
120 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
121 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
122 | ||
484adff8 | 123 | init_rwsem(&sdp->sd_log_flush_lock); |
16615be1 SW |
124 | atomic_set(&sdp->sd_log_in_flight, 0); |
125 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
b3b94faa DT |
126 | |
127 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
128 | ||
f55ab26a | 129 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
130 | |
131 | return sdp; | |
132 | } | |
133 | ||
b3b94faa | 134 | |
9b8df98f SW |
135 | /** |
136 | * gfs2_check_sb - Check superblock | |
137 | * @sdp: the filesystem | |
138 | * @sb: The superblock | |
139 | * @silent: Don't print a message if the check fails | |
140 | * | |
141 | * Checks the version code of the FS is one that we understand how to | |
142 | * read and that the sizes of the various on-disk structures have not | |
143 | * changed. | |
144 | */ | |
145 | ||
146 | static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent) | |
147 | { | |
148 | unsigned int x; | |
149 | ||
150 | if (sb->sb_magic != GFS2_MAGIC || | |
151 | sb->sb_type != GFS2_METATYPE_SB) { | |
152 | if (!silent) | |
153 | printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n"); | |
154 | return -EINVAL; | |
155 | } | |
156 | ||
157 | /* If format numbers match exactly, we're done. */ | |
158 | ||
159 | if (sb->sb_fs_format == GFS2_FORMAT_FS && | |
160 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) | |
161 | return 0; | |
162 | ||
163 | if (sb->sb_fs_format != GFS2_FORMAT_FS) { | |
164 | for (x = 0; gfs2_old_fs_formats[x]; x++) | |
165 | if (gfs2_old_fs_formats[x] == sb->sb_fs_format) | |
166 | break; | |
167 | ||
168 | if (!gfs2_old_fs_formats[x]) { | |
169 | printk(KERN_WARNING | |
170 | "GFS2: code version (%u, %u) is incompatible " | |
171 | "with ondisk format (%u, %u)\n", | |
172 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
173 | sb->sb_fs_format, sb->sb_multihost_format); | |
174 | printk(KERN_WARNING | |
175 | "GFS2: I don't know how to upgrade this FS\n"); | |
176 | return -EINVAL; | |
177 | } | |
178 | } | |
179 | ||
180 | if (sb->sb_multihost_format != GFS2_FORMAT_MULTI) { | |
181 | for (x = 0; gfs2_old_multihost_formats[x]; x++) | |
182 | if (gfs2_old_multihost_formats[x] == | |
183 | sb->sb_multihost_format) | |
184 | break; | |
185 | ||
186 | if (!gfs2_old_multihost_formats[x]) { | |
187 | printk(KERN_WARNING | |
188 | "GFS2: code version (%u, %u) is incompatible " | |
189 | "with ondisk format (%u, %u)\n", | |
190 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
191 | sb->sb_fs_format, sb->sb_multihost_format); | |
192 | printk(KERN_WARNING | |
193 | "GFS2: I don't know how to upgrade this FS\n"); | |
194 | return -EINVAL; | |
195 | } | |
196 | } | |
197 | ||
198 | if (!sdp->sd_args.ar_upgrade) { | |
199 | printk(KERN_WARNING | |
200 | "GFS2: code version (%u, %u) is incompatible " | |
201 | "with ondisk format (%u, %u)\n", | |
202 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
203 | sb->sb_fs_format, sb->sb_multihost_format); | |
204 | printk(KERN_INFO | |
205 | "GFS2: Use the \"upgrade\" mount option to upgrade " | |
206 | "the FS\n"); | |
207 | printk(KERN_INFO "GFS2: See the manual for more details\n"); | |
208 | return -EINVAL; | |
209 | } | |
210 | ||
211 | return 0; | |
212 | } | |
213 | ||
214 | static void end_bio_io_page(struct bio *bio, int error) | |
215 | { | |
216 | struct page *page = bio->bi_private; | |
217 | ||
218 | if (!error) | |
219 | SetPageUptodate(page); | |
220 | else | |
221 | printk(KERN_WARNING "gfs2: error %d reading superblock\n", error); | |
222 | unlock_page(page); | |
223 | } | |
224 | ||
225 | static void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) | |
226 | { | |
227 | const struct gfs2_sb *str = buf; | |
228 | ||
229 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
230 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
231 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); | |
232 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); | |
233 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
234 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
235 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
236 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
237 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
238 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
239 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
240 | ||
241 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
242 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
243 | } | |
244 | ||
245 | /** | |
246 | * gfs2_read_super - Read the gfs2 super block from disk | |
247 | * @sdp: The GFS2 super block | |
248 | * @sector: The location of the super block | |
249 | * @error: The error code to return | |
250 | * | |
251 | * This uses the bio functions to read the super block from disk | |
252 | * because we want to be 100% sure that we never read cached data. | |
253 | * A super block is read twice only during each GFS2 mount and is | |
254 | * never written to by the filesystem. The first time its read no | |
255 | * locks are held, and the only details which are looked at are those | |
256 | * relating to the locking protocol. Once locking is up and working, | |
257 | * the sb is read again under the lock to establish the location of | |
258 | * the master directory (contains pointers to journals etc) and the | |
259 | * root directory. | |
260 | * | |
261 | * Returns: 0 on success or error | |
262 | */ | |
263 | ||
264 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector) | |
265 | { | |
266 | struct super_block *sb = sdp->sd_vfs; | |
267 | struct gfs2_sb *p; | |
268 | struct page *page; | |
269 | struct bio *bio; | |
270 | ||
271 | page = alloc_page(GFP_NOFS); | |
272 | if (unlikely(!page)) | |
273 | return -ENOBUFS; | |
274 | ||
275 | ClearPageUptodate(page); | |
276 | ClearPageDirty(page); | |
277 | lock_page(page); | |
278 | ||
279 | bio = bio_alloc(GFP_NOFS, 1); | |
280 | if (unlikely(!bio)) { | |
281 | __free_page(page); | |
282 | return -ENOBUFS; | |
283 | } | |
284 | ||
285 | bio->bi_sector = sector * (sb->s_blocksize >> 9); | |
286 | bio->bi_bdev = sb->s_bdev; | |
287 | bio_add_page(bio, page, PAGE_SIZE, 0); | |
288 | ||
289 | bio->bi_end_io = end_bio_io_page; | |
290 | bio->bi_private = page; | |
291 | submit_bio(READ_SYNC | (1 << BIO_RW_META), bio); | |
292 | wait_on_page_locked(page); | |
293 | bio_put(bio); | |
294 | if (!PageUptodate(page)) { | |
295 | __free_page(page); | |
296 | return -EIO; | |
297 | } | |
298 | p = kmap(page); | |
299 | gfs2_sb_in(&sdp->sd_sb, p); | |
300 | kunmap(page); | |
301 | __free_page(page); | |
302 | return 0; | |
303 | } | |
304 | /** | |
305 | * gfs2_read_sb - Read super block | |
306 | * @sdp: The GFS2 superblock | |
307 | * @gl: the glock for the superblock (assumed to be held) | |
308 | * @silent: Don't print message if mount fails | |
309 | * | |
310 | */ | |
311 | ||
312 | static int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent) | |
313 | { | |
314 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
315 | u32 tmp_blocks; | |
316 | unsigned int x; | |
317 | int error; | |
318 | ||
319 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
320 | if (error) { | |
321 | if (!silent) | |
322 | fs_err(sdp, "can't read superblock\n"); | |
323 | return error; | |
324 | } | |
325 | ||
326 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
327 | if (error) | |
328 | return error; | |
329 | ||
330 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
331 | GFS2_BASIC_BLOCK_SHIFT; | |
332 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
333 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - | |
334 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
335 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
336 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
337 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); | |
338 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
339 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
340 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
341 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
342 | sizeof(struct gfs2_meta_header)) / | |
343 | sizeof(struct gfs2_quota_change); | |
344 | ||
345 | /* Compute maximum reservation required to add a entry to a directory */ | |
346 | ||
347 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH), | |
348 | sdp->sd_jbsize); | |
349 | ||
350 | ind_blocks = 0; | |
351 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
352 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
353 | ind_blocks += tmp_blocks; | |
354 | } | |
355 | ||
356 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
357 | ||
358 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
359 | ||
360 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
361 | sizeof(struct gfs2_dinode); | |
362 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
363 | for (x = 2;; x++) { | |
364 | u64 space, d; | |
365 | u32 m; | |
366 | ||
367 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
368 | d = space; | |
369 | m = do_div(d, sdp->sd_inptrs); | |
370 | ||
371 | if (d != sdp->sd_heightsize[x - 1] || m) | |
372 | break; | |
373 | sdp->sd_heightsize[x] = space; | |
374 | } | |
375 | sdp->sd_max_height = x; | |
376 | sdp->sd_heightsize[x] = ~0; | |
377 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
378 | ||
379 | sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize - | |
380 | sizeof(struct gfs2_dinode); | |
381 | sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs; | |
382 | for (x = 2;; x++) { | |
383 | u64 space, d; | |
384 | u32 m; | |
385 | ||
386 | space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs; | |
387 | d = space; | |
388 | m = do_div(d, sdp->sd_inptrs); | |
389 | ||
390 | if (d != sdp->sd_jheightsize[x - 1] || m) | |
391 | break; | |
392 | sdp->sd_jheightsize[x] = space; | |
393 | } | |
394 | sdp->sd_max_jheight = x; | |
395 | sdp->sd_jheightsize[x] = ~0; | |
396 | gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT); | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
b3b94faa DT |
401 | static int init_names(struct gfs2_sbd *sdp, int silent) |
402 | { | |
b3b94faa DT |
403 | char *proto, *table; |
404 | int error = 0; | |
405 | ||
406 | proto = sdp->sd_args.ar_lockproto; | |
407 | table = sdp->sd_args.ar_locktable; | |
408 | ||
409 | /* Try to autodetect */ | |
410 | ||
411 | if (!proto[0] || !table[0]) { | |
bb8d8a6f SW |
412 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
413 | if (error) | |
414 | return error; | |
3cf1e7be SW |
415 | |
416 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
b3b94faa DT |
417 | if (error) |
418 | goto out; | |
419 | ||
420 | if (!proto[0]) | |
3cf1e7be | 421 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 422 | if (!table[0]) |
3cf1e7be | 423 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
424 | } |
425 | ||
426 | if (!table[0]) | |
427 | table = sdp->sd_vfs->s_id; | |
428 | ||
00377d8e JD |
429 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
430 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); | |
b3b94faa | 431 | |
5d35e31f DC |
432 | table = sdp->sd_table_name; |
433 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
434 | *table = '_'; |
435 | ||
a91ea69f | 436 | out: |
b3b94faa DT |
437 | return error; |
438 | } | |
439 | ||
440 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
441 | int undo) | |
442 | { | |
443 | struct task_struct *p; | |
444 | int error = 0; | |
445 | ||
446 | if (undo) | |
447 | goto fail_trans; | |
448 | ||
b3b94faa DT |
449 | for (sdp->sd_glockd_num = 0; |
450 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
451 | sdp->sd_glockd_num++) { | |
452 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
453 | error = IS_ERR(p); | |
454 | if (error) { | |
455 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
456 | goto fail; | |
457 | } | |
458 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
459 | } | |
460 | ||
461 | error = gfs2_glock_nq_num(sdp, | |
462 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
463 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
464 | mount_gh); | |
465 | if (error) { | |
466 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
467 | goto fail; | |
468 | } | |
469 | ||
470 | error = gfs2_glock_nq_num(sdp, | |
471 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
472 | LM_ST_SHARED, | |
579b78a4 | 473 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
474 | &sdp->sd_live_gh); |
475 | if (error) { | |
476 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
477 | goto fail_mount; | |
478 | } | |
479 | ||
480 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
481 | CREATE, &sdp->sd_rename_gl); | |
482 | if (error) { | |
483 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
484 | goto fail_live; | |
485 | } | |
486 | ||
487 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
488 | CREATE, &sdp->sd_trans_gl); | |
489 | if (error) { | |
490 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
491 | goto fail_rename; | |
492 | } | |
493 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
494 | ||
495 | return 0; | |
496 | ||
feaa7bba | 497 | fail_trans: |
b3b94faa | 498 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 499 | fail_rename: |
b3b94faa | 500 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 501 | fail_live: |
b3b94faa | 502 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 503 | fail_mount: |
b3b94faa | 504 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 505 | fail: |
b3b94faa DT |
506 | while (sdp->sd_glockd_num--) |
507 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
508 | ||
b3b94faa DT |
509 | return error; |
510 | } | |
511 | ||
9b8df98f SW |
512 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
513 | u64 no_addr, const char *name) | |
f42faf4f | 514 | { |
9b8df98f SW |
515 | struct gfs2_sbd *sdp = sb->s_fs_info; |
516 | struct dentry *dentry; | |
517 | struct inode *inode; | |
518 | ||
519 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0); | |
520 | if (IS_ERR(inode)) { | |
521 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
522 | return PTR_ERR(inode); | |
523 | } | |
524 | dentry = d_alloc_root(inode); | |
525 | if (!dentry) { | |
526 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
527 | iput(inode); | |
528 | return -ENOMEM; | |
529 | } | |
530 | dentry->d_op = &gfs2_dops; | |
531 | *dptr = dentry; | |
532 | return 0; | |
f42faf4f SW |
533 | } |
534 | ||
9b8df98f | 535 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
536 | { |
537 | struct super_block *sb = sdp->sd_vfs; | |
538 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 539 | u64 no_addr; |
9b8df98f | 540 | int ret; |
b3b94faa | 541 | |
9b8df98f SW |
542 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
543 | LM_ST_SHARED, 0, &sb_gh); | |
544 | if (ret) { | |
545 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
546 | return ret; | |
b3b94faa | 547 | } |
907b9bce | 548 | |
9b8df98f SW |
549 | ret = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); |
550 | if (ret) { | |
551 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
552 | goto out; |
553 | } | |
554 | ||
555 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 556 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
9b8df98f | 557 | ret = -EINVAL; |
b3b94faa DT |
558 | fs_err(sdp, "FS block size (%u) is too small for device " |
559 | "block size (%u)\n", | |
560 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
561 | goto out; | |
562 | } | |
563 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 564 | ret = -EINVAL; |
b3b94faa DT |
565 | fs_err(sdp, "FS block size (%u) is too big for machine " |
566 | "page size (%u)\n", | |
567 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
568 | goto out; | |
569 | } | |
b3b94faa DT |
570 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
571 | ||
f42faf4f | 572 | /* Get the root inode */ |
dbb7cae2 | 573 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
574 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
575 | if (ret) | |
f42faf4f | 576 | goto out; |
b3b94faa | 577 | |
9b8df98f SW |
578 | /* Get the master inode */ |
579 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
580 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
581 | if (ret) { | |
582 | dput(sdp->sd_root_dir); | |
583 | goto out; | |
584 | } | |
585 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 586 | out: |
b3b94faa | 587 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 588 | return ret; |
b3b94faa DT |
589 | } |
590 | ||
da6dd40d BP |
591 | /** |
592 | * map_journal_extents - create a reusable "extent" mapping from all logical | |
593 | * blocks to all physical blocks for the given journal. This will save | |
594 | * us time when writing journal blocks. Most journals will have only one | |
595 | * extent that maps all their logical blocks. That's because gfs2.mkfs | |
596 | * arranges the journal blocks sequentially to maximize performance. | |
597 | * So the extent would map the first block for the entire file length. | |
598 | * However, gfs2_jadd can happen while file activity is happening, so | |
599 | * those journals may not be sequential. Less likely is the case where | |
600 | * the users created their own journals by mounting the metafs and | |
601 | * laying it out. But it's still possible. These journals might have | |
602 | * several extents. | |
603 | * | |
604 | * TODO: This should be done in bigger chunks rather than one block at a time, | |
605 | * but since it's only done at mount time, I'm not worried about the | |
606 | * time it takes. | |
607 | */ | |
608 | static int map_journal_extents(struct gfs2_sbd *sdp) | |
609 | { | |
610 | struct gfs2_jdesc *jd = sdp->sd_jdesc; | |
611 | unsigned int lb; | |
612 | u64 db, prev_db; /* logical block, disk block, prev disk block */ | |
613 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); | |
614 | struct gfs2_journal_extent *jext = NULL; | |
615 | struct buffer_head bh; | |
616 | int rc = 0; | |
617 | ||
da6dd40d BP |
618 | prev_db = 0; |
619 | ||
c9e98886 | 620 | for (lb = 0; lb < ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; lb++) { |
da6dd40d BP |
621 | bh.b_state = 0; |
622 | bh.b_blocknr = 0; | |
623 | bh.b_size = 1 << ip->i_inode.i_blkbits; | |
624 | rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); | |
625 | db = bh.b_blocknr; | |
626 | if (rc || !db) { | |
627 | printk(KERN_INFO "GFS2 journal mapping error %d: lb=" | |
628 | "%u db=%llu\n", rc, lb, (unsigned long long)db); | |
629 | break; | |
630 | } | |
631 | if (!prev_db || db != prev_db + 1) { | |
632 | jext = kzalloc(sizeof(struct gfs2_journal_extent), | |
633 | GFP_KERNEL); | |
634 | if (!jext) { | |
635 | printk(KERN_INFO "GFS2 error: out of memory " | |
636 | "mapping journal extents.\n"); | |
637 | rc = -ENOMEM; | |
638 | break; | |
639 | } | |
640 | jext->dblock = db; | |
641 | jext->lblock = lb; | |
642 | jext->blocks = 1; | |
643 | list_add_tail(&jext->extent_list, &jd->extent_list); | |
644 | } else { | |
645 | jext->blocks++; | |
646 | } | |
647 | prev_db = db; | |
648 | } | |
649 | return rc; | |
650 | } | |
651 | ||
da755fdb SW |
652 | static void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp) |
653 | { | |
048bca22 SW |
654 | if (!sdp->sd_lockstruct.ls_ops->lm_others_may_mount) |
655 | return; | |
da755fdb SW |
656 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags))) |
657 | sdp->sd_lockstruct.ls_ops->lm_others_may_mount( | |
658 | sdp->sd_lockstruct.ls_lockspace); | |
659 | } | |
660 | ||
b3b94faa DT |
661 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
662 | { | |
9b8df98f | 663 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
664 | struct gfs2_holder ji_gh; |
665 | struct task_struct *p; | |
5c676f6d | 666 | struct gfs2_inode *ip; |
b3b94faa DT |
667 | int jindex = 1; |
668 | int error = 0; | |
669 | ||
670 | if (undo) { | |
671 | jindex = 0; | |
672 | goto fail_recoverd; | |
673 | } | |
674 | ||
9b8df98f | 675 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 676 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 677 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 678 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 679 | } |
feaa7bba | 680 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 681 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
682 | |
683 | /* Load in the journal index special file */ | |
684 | ||
685 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
686 | if (error) { | |
687 | fs_err(sdp, "can't read journal index: %d\n", error); | |
688 | goto fail; | |
689 | } | |
690 | ||
691 | error = -EINVAL; | |
692 | if (!gfs2_jindex_size(sdp)) { | |
693 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 694 | goto fail_jindex; |
b3b94faa DT |
695 | } |
696 | ||
697 | if (sdp->sd_args.ar_spectator) { | |
698 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 699 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
b3b94faa DT |
700 | } else { |
701 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
702 | fs_err(sdp, "can't mount journal #%u\n", | |
703 | sdp->sd_lockstruct.ls_jid); | |
704 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
705 | gfs2_jindex_size(sdp), | |
706 | gfs2_jindex_size(sdp) - 1); | |
707 | goto fail_jindex; | |
708 | } | |
709 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
710 | ||
feaa7bba | 711 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
712 | &gfs2_journal_glops, |
713 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
714 | &sdp->sd_journal_gh); | |
715 | if (error) { | |
716 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
717 | goto fail_jindex; | |
718 | } | |
719 | ||
feaa7bba SW |
720 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
721 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 722 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
723 | &sdp->sd_jinode_gh); |
724 | if (error) { | |
725 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
726 | error); | |
727 | goto fail_journal_gh; | |
728 | } | |
729 | ||
730 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
731 | if (error) { | |
732 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
733 | sdp->sd_jdesc->jd_jid, error); | |
734 | goto fail_jinode_gh; | |
735 | } | |
fd041f0b | 736 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
da6dd40d BP |
737 | |
738 | /* Map the extents for this journal's blocks */ | |
739 | map_journal_extents(sdp); | |
b3b94faa DT |
740 | } |
741 | ||
742 | if (sdp->sd_lockstruct.ls_first) { | |
743 | unsigned int x; | |
744 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 745 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
746 | if (error) { |
747 | fs_err(sdp, "error recovering journal %u: %d\n", | |
748 | x, error); | |
749 | goto fail_jinode_gh; | |
750 | } | |
751 | } | |
752 | ||
753 | gfs2_lm_others_may_mount(sdp); | |
754 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 755 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
756 | if (error) { |
757 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
758 | goto fail_jinode_gh; | |
759 | } | |
760 | } | |
761 | ||
762 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
763 | gfs2_glock_dq_uninit(&ji_gh); | |
764 | jindex = 0; | |
765 | ||
b3b94faa DT |
766 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
767 | error = IS_ERR(p); | |
768 | if (error) { | |
769 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
770 | goto fail_jinode_gh; | |
771 | } | |
772 | sdp->sd_recoverd_process = p; | |
773 | ||
774 | return 0; | |
775 | ||
a91ea69f | 776 | fail_recoverd: |
b3b94faa | 777 | kthread_stop(sdp->sd_recoverd_process); |
a91ea69f | 778 | fail_jinode_gh: |
b3b94faa DT |
779 | if (!sdp->sd_args.ar_spectator) |
780 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 781 | fail_journal_gh: |
b3b94faa DT |
782 | if (!sdp->sd_args.ar_spectator) |
783 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 784 | fail_jindex: |
b3b94faa DT |
785 | gfs2_jindex_free(sdp); |
786 | if (jindex) | |
787 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 788 | fail: |
f42faf4f | 789 | iput(sdp->sd_jindex); |
b3b94faa DT |
790 | return error; |
791 | } | |
792 | ||
b3b94faa DT |
793 | |
794 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
795 | { | |
b3b94faa | 796 | int error = 0; |
5c676f6d | 797 | struct gfs2_inode *ip; |
9b8df98f | 798 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
799 | |
800 | if (undo) | |
f42faf4f SW |
801 | goto fail_qinode; |
802 | ||
f42faf4f SW |
803 | error = init_journal(sdp, undo); |
804 | if (error) | |
9b8df98f | 805 | goto fail; |
b3b94faa DT |
806 | |
807 | /* Read in the master inode number inode */ | |
9b8df98f | 808 | sdp->sd_inum_inode = gfs2_lookup_simple(master, "inum"); |
c752666c SW |
809 | if (IS_ERR(sdp->sd_inum_inode)) { |
810 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 811 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 812 | goto fail_journal; |
b3b94faa DT |
813 | } |
814 | ||
f42faf4f | 815 | |
b3b94faa | 816 | /* Read in the master statfs inode */ |
9b8df98f | 817 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
c752666c SW |
818 | if (IS_ERR(sdp->sd_statfs_inode)) { |
819 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 820 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 821 | goto fail_inum; |
b3b94faa DT |
822 | } |
823 | ||
824 | /* Read in the resource index inode */ | |
9b8df98f | 825 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
826 | if (IS_ERR(sdp->sd_rindex)) { |
827 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
828 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
829 | goto fail_statfs; | |
830 | } | |
feaa7bba | 831 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d | 832 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
cf45b752 | 833 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
834 | |
835 | /* Read in the quota inode */ | |
9b8df98f | 836 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
837 | if (IS_ERR(sdp->sd_quota_inode)) { |
838 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
839 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
840 | goto fail_rindex; | |
841 | } | |
b3b94faa DT |
842 | return 0; |
843 | ||
f42faf4f SW |
844 | fail_qinode: |
845 | iput(sdp->sd_quota_inode); | |
f42faf4f | 846 | fail_rindex: |
b3b94faa | 847 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 848 | iput(sdp->sd_rindex); |
f42faf4f SW |
849 | fail_statfs: |
850 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
851 | fail_inum: |
852 | iput(sdp->sd_inum_inode); | |
853 | fail_journal: | |
854 | init_journal(sdp, UNDO); | |
f42faf4f | 855 | fail: |
b3b94faa DT |
856 | return error; |
857 | } | |
858 | ||
859 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
860 | { | |
f42faf4f | 861 | struct inode *pn = NULL; |
b3b94faa DT |
862 | char buf[30]; |
863 | int error = 0; | |
5c676f6d | 864 | struct gfs2_inode *ip; |
9b8df98f | 865 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
866 | |
867 | if (sdp->sd_args.ar_spectator) | |
868 | return 0; | |
869 | ||
870 | if (undo) | |
871 | goto fail_qc_gh; | |
872 | ||
9b8df98f | 873 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
874 | if (IS_ERR(pn)) { |
875 | error = PTR_ERR(pn); | |
b3b94faa DT |
876 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
877 | return error; | |
878 | } | |
879 | ||
880 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
881 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
882 | if (IS_ERR(sdp->sd_ir_inode)) { | |
883 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
884 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
885 | goto fail; | |
886 | } | |
887 | ||
888 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
889 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
890 | if (IS_ERR(sdp->sd_sc_inode)) { | |
891 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
892 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
893 | goto fail_ir_i; | |
894 | } | |
895 | ||
b3b94faa | 896 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
897 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
898 | if (IS_ERR(sdp->sd_qc_inode)) { | |
899 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
900 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
901 | goto fail_ut_i; | |
902 | } | |
903 | ||
f42faf4f | 904 | iput(pn); |
b3b94faa DT |
905 | pn = NULL; |
906 | ||
feaa7bba | 907 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 908 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 909 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
910 | &sdp->sd_ir_gh); |
911 | if (error) { | |
912 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
913 | goto fail_qc_i; | |
914 | } | |
915 | ||
feaa7bba | 916 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 917 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 918 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
919 | &sdp->sd_sc_gh); |
920 | if (error) { | |
921 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
922 | goto fail_ir_gh; | |
923 | } | |
924 | ||
feaa7bba | 925 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 926 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 927 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
928 | &sdp->sd_qc_gh); |
929 | if (error) { | |
930 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
931 | goto fail_ut_gh; | |
932 | } | |
933 | ||
934 | return 0; | |
935 | ||
a91ea69f | 936 | fail_qc_gh: |
b3b94faa | 937 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 938 | fail_ut_gh: |
b3b94faa | 939 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 940 | fail_ir_gh: |
b3b94faa | 941 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
a91ea69f | 942 | fail_qc_i: |
f42faf4f | 943 | iput(sdp->sd_qc_inode); |
a91ea69f | 944 | fail_ut_i: |
f42faf4f | 945 | iput(sdp->sd_sc_inode); |
a91ea69f | 946 | fail_ir_i: |
f42faf4f | 947 | iput(sdp->sd_ir_inode); |
a91ea69f | 948 | fail: |
b3b94faa | 949 | if (pn) |
f42faf4f | 950 | iput(pn); |
b3b94faa DT |
951 | return error; |
952 | } | |
953 | ||
954 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
955 | { | |
956 | struct task_struct *p; | |
957 | int error = 0; | |
958 | ||
959 | if (undo) | |
feaa7bba | 960 | goto fail_quotad; |
b3b94faa DT |
961 | |
962 | sdp->sd_log_flush_time = jiffies; | |
963 | sdp->sd_jindex_refresh_time = jiffies; | |
964 | ||
965 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
966 | error = IS_ERR(p); | |
967 | if (error) { | |
968 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
969 | return error; | |
970 | } | |
971 | sdp->sd_logd_process = p; | |
972 | ||
b3b94faa DT |
973 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); |
974 | error = IS_ERR(p); | |
975 | if (error) { | |
976 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
977 | goto fail; | |
978 | } | |
979 | sdp->sd_quotad_process = p; | |
980 | ||
b3b94faa DT |
981 | return 0; |
982 | ||
b3b94faa | 983 | |
feaa7bba | 984 | fail_quotad: |
b3b94faa | 985 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 986 | fail: |
b3b94faa | 987 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
988 | return error; |
989 | } | |
da755fdb SW |
990 | |
991 | /** | |
992 | * gfs2_lm_mount - mount a locking protocol | |
993 | * @sdp: the filesystem | |
994 | * @args: mount arguements | |
995 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs | |
996 | * | |
997 | * Returns: errno | |
998 | */ | |
999 | ||
1000 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
1001 | { | |
1002 | char *proto = sdp->sd_proto_name; | |
1003 | char *table = sdp->sd_table_name; | |
58e9fee1 | 1004 | int flags = LM_MFLAG_CONV_NODROP; |
da755fdb SW |
1005 | int error; |
1006 | ||
1007 | if (sdp->sd_args.ar_spectator) | |
1008 | flags |= LM_MFLAG_SPECTATOR; | |
1009 | ||
1010 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
1011 | ||
1012 | error = gfs2_mount_lockproto(proto, table, sdp->sd_args.ar_hostdata, | |
1013 | gfs2_glock_cb, sdp, | |
1014 | GFS2_MIN_LVB_SIZE, flags, | |
1015 | &sdp->sd_lockstruct, &sdp->sd_kobj); | |
1016 | if (error) { | |
1017 | fs_info(sdp, "can't mount proto=%s, table=%s, hostdata=%s\n", | |
1018 | proto, table, sdp->sd_args.ar_hostdata); | |
1019 | goto out; | |
1020 | } | |
1021 | ||
048bca22 | 1022 | if (gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_ops) || |
da755fdb SW |
1023 | gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_lvb_size >= |
1024 | GFS2_MIN_LVB_SIZE)) { | |
1025 | gfs2_unmount_lockproto(&sdp->sd_lockstruct); | |
1026 | goto out; | |
1027 | } | |
1028 | ||
1029 | if (sdp->sd_args.ar_spectator) | |
1030 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table); | |
1031 | else | |
1032 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table, | |
1033 | sdp->sd_lockstruct.ls_jid); | |
1034 | ||
1035 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); | |
1036 | ||
1037 | if ((sdp->sd_lockstruct.ls_flags & LM_LSFLAG_LOCAL) && | |
1038 | !sdp->sd_args.ar_ignore_local_fs) { | |
1039 | sdp->sd_args.ar_localflocks = 1; | |
1040 | sdp->sd_args.ar_localcaching = 1; | |
1041 | } | |
1042 | ||
1043 | out: | |
1044 | return error; | |
1045 | } | |
1046 | ||
1047 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
1048 | { | |
1049 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags))) | |
1050 | gfs2_unmount_lockproto(&sdp->sd_lockstruct); | |
1051 | } | |
b3b94faa DT |
1052 | |
1053 | /** | |
1054 | * fill_super - Read in superblock | |
1055 | * @sb: The VFS superblock | |
1056 | * @data: Mount options | |
1057 | * @silent: Don't complain if it's not a GFS2 filesystem | |
1058 | * | |
1059 | * Returns: errno | |
1060 | */ | |
1061 | ||
1062 | static int fill_super(struct super_block *sb, void *data, int silent) | |
1063 | { | |
1064 | struct gfs2_sbd *sdp; | |
1065 | struct gfs2_holder mount_gh; | |
1066 | int error; | |
1067 | ||
1068 | sdp = init_sbd(sb); | |
1069 | if (!sdp) { | |
d92a8d48 | 1070 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1071 | return -ENOMEM; |
1072 | } | |
1073 | ||
1074 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
1075 | if (error) { | |
d92a8d48 | 1076 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
1077 | goto fail; |
1078 | } | |
1079 | ||
719ee344 SW |
1080 | sb->s_magic = GFS2_MAGIC; |
1081 | sb->s_op = &gfs2_super_ops; | |
1082 | sb->s_export_op = &gfs2_export_ops; | |
1083 | sb->s_time_gran = 1; | |
1084 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1085 | |
1086 | /* Set up the buffer cache and fill in some fake block size values | |
1087 | to allow us to read-in the on-disk superblock. */ | |
1088 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1089 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1090 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1091 | GFS2_BASIC_BLOCK_SHIFT; | |
1092 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
1093 | |
1094 | error = init_names(sdp, silent); | |
1095 | if (error) | |
1096 | goto fail; | |
1097 | ||
7c52b166 RP |
1098 | gfs2_create_debugfs_file(sdp); |
1099 | ||
b3b94faa DT |
1100 | error = gfs2_sys_fs_add(sdp); |
1101 | if (error) | |
1102 | goto fail; | |
1103 | ||
1104 | error = gfs2_lm_mount(sdp, silent); | |
1105 | if (error) | |
1106 | goto fail_sys; | |
1107 | ||
1108 | error = init_locking(sdp, &mount_gh, DO); | |
1109 | if (error) | |
1110 | goto fail_lm; | |
1111 | ||
9b8df98f | 1112 | error = init_sb(sdp, silent); |
b3b94faa DT |
1113 | if (error) |
1114 | goto fail_locking; | |
b3b94faa DT |
1115 | |
1116 | error = init_inodes(sdp, DO); | |
1117 | if (error) | |
f42faf4f | 1118 | goto fail_sb; |
b3b94faa DT |
1119 | |
1120 | error = init_per_node(sdp, DO); | |
1121 | if (error) | |
1122 | goto fail_inodes; | |
1123 | ||
1124 | error = gfs2_statfs_init(sdp); | |
1125 | if (error) { | |
1126 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1127 | goto fail_per_node; | |
1128 | } | |
1129 | ||
1130 | error = init_threads(sdp, DO); | |
1131 | if (error) | |
1132 | goto fail_per_node; | |
1133 | ||
1134 | if (!(sb->s_flags & MS_RDONLY)) { | |
1135 | error = gfs2_make_fs_rw(sdp); | |
1136 | if (error) { | |
1137 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
1138 | goto fail_threads; | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | gfs2_glock_dq_uninit(&mount_gh); | |
1143 | ||
1144 | return 0; | |
1145 | ||
a91ea69f | 1146 | fail_threads: |
b3b94faa | 1147 | init_threads(sdp, UNDO); |
a91ea69f | 1148 | fail_per_node: |
b3b94faa | 1149 | init_per_node(sdp, UNDO); |
a91ea69f | 1150 | fail_inodes: |
b3b94faa | 1151 | init_inodes(sdp, UNDO); |
a91ea69f | 1152 | fail_sb: |
9b8df98f SW |
1153 | if (sdp->sd_root_dir) |
1154 | dput(sdp->sd_root_dir); | |
1155 | if (sdp->sd_master_dir) | |
1156 | dput(sdp->sd_master_dir); | |
1157 | sb->s_root = NULL; | |
a91ea69f | 1158 | fail_locking: |
b3b94faa | 1159 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1160 | fail_lm: |
1bdad606 | 1161 | gfs2_gl_hash_clear(sdp); |
b3b94faa DT |
1162 | gfs2_lm_unmount(sdp); |
1163 | while (invalidate_inodes(sb)) | |
1164 | yield(); | |
a91ea69f | 1165 | fail_sys: |
b3b94faa | 1166 | gfs2_sys_fs_del(sdp); |
a91ea69f | 1167 | fail: |
5f882096 | 1168 | gfs2_delete_debugfs_file(sdp); |
a2c45807 | 1169 | kfree(sdp); |
5c676f6d | 1170 | sb->s_fs_info = NULL; |
b3b94faa DT |
1171 | return error; |
1172 | } | |
1173 | ||
ccd6efd0 | 1174 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
9b8df98f | 1175 | const char *dev_name, void *data, struct vfsmount *mnt) |
b3b94faa | 1176 | { |
9b8df98f | 1177 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); |
86384605 AD |
1178 | } |
1179 | ||
9b8df98f | 1180 | static struct super_block *get_gfs2_sb(const char *dev_name) |
86384605 | 1181 | { |
9b8df98f | 1182 | struct super_block *sb; |
86384605 | 1183 | struct nameidata nd; |
86384605 | 1184 | int error; |
907b9bce | 1185 | |
86384605 AD |
1186 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); |
1187 | if (error) { | |
9b8df98f SW |
1188 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n", |
1189 | dev_name, error); | |
1190 | return NULL; | |
86384605 | 1191 | } |
9b8df98f SW |
1192 | sb = nd.path.dentry->d_inode->i_sb; |
1193 | if (sb && (sb->s_type == &gfs2_fs_type)) | |
1194 | atomic_inc(&sb->s_active); | |
1195 | else | |
1196 | sb = NULL; | |
1d957f9b | 1197 | path_put(&nd.path); |
86384605 AD |
1198 | return sb; |
1199 | } | |
1200 | ||
1201 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
1202 | const char *dev_name, void *data, struct vfsmount *mnt) | |
1203 | { | |
9b8df98f | 1204 | struct super_block *sb = NULL; |
86384605 | 1205 | struct gfs2_sbd *sdp; |
86384605 AD |
1206 | |
1207 | sb = get_gfs2_sb(dev_name); | |
1208 | if (!sb) { | |
1209 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
9b8df98f | 1210 | return -ENOENT; |
86384605 | 1211 | } |
2d3ba1ea | 1212 | sdp = sb->s_fs_info; |
9b8df98f SW |
1213 | mnt->mnt_sb = sb; |
1214 | mnt->mnt_root = dget(sdp->sd_master_dir); | |
1215 | return 0; | |
b3b94faa DT |
1216 | } |
1217 | ||
419c93e0 | 1218 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1219 | { |
1220 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
acd2c8aa AD |
1221 | if (sdp) { |
1222 | gfs2_meta_syncfs(sdp); | |
1223 | dput(sdp->sd_root_dir); | |
1224 | dput(sdp->sd_master_dir); | |
1225 | sdp->sd_root_dir = NULL; | |
1226 | sdp->sd_master_dir = NULL; | |
1227 | } | |
9b8df98f SW |
1228 | shrink_dcache_sb(sb); |
1229 | kill_block_super(sb); | |
acd2c8aa AD |
1230 | if (sdp) |
1231 | gfs2_delete_debugfs_file(sdp); | |
86384605 AD |
1232 | } |
1233 | ||
b3b94faa DT |
1234 | struct file_system_type gfs2_fs_type = { |
1235 | .name = "gfs2", | |
1236 | .fs_flags = FS_REQUIRES_DEV, | |
1237 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
1238 | .kill_sb = gfs2_kill_sb, |
1239 | .owner = THIS_MODULE, | |
1240 | }; | |
1241 | ||
1242 | struct file_system_type gfs2meta_fs_type = { | |
1243 | .name = "gfs2meta", | |
1244 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 | 1245 | .get_sb = gfs2_get_sb_meta, |
b3b94faa DT |
1246 | .owner = THIS_MODULE, |
1247 | }; | |
1248 |