Commit | Line | Data |
---|---|---|
1c6fdbd8 KO |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * bcachefs setup/teardown code, and some metadata io - read a superblock and | |
4 | * figure out what to do with it. | |
5 | * | |
6 | * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com> | |
7 | * Copyright 2012 Google, Inc. | |
8 | */ | |
9 | ||
10 | #include "bcachefs.h" | |
7b3f84ea KO |
11 | #include "alloc_background.h" |
12 | #include "alloc_foreground.h" | |
5b8a9227 | 13 | #include "bkey_sort.h" |
1c6fdbd8 KO |
14 | #include "btree_cache.h" |
15 | #include "btree_gc.h" | |
2ca88e5a | 16 | #include "btree_key_cache.h" |
1c6fdbd8 KO |
17 | #include "btree_update_interior.h" |
18 | #include "btree_io.h" | |
21aec962 | 19 | #include "buckets_waiting_for_journal.h" |
1c6fdbd8 KO |
20 | #include "chardev.h" |
21 | #include "checksum.h" | |
22 | #include "clock.h" | |
23 | #include "compress.h" | |
104c6974 | 24 | #include "counters.h" |
1c6fdbd8 KO |
25 | #include "debug.h" |
26 | #include "disk_groups.h" | |
cd575ddf | 27 | #include "ec.h" |
d4bf5eec | 28 | #include "errcode.h" |
1c6fdbd8 KO |
29 | #include "error.h" |
30 | #include "fs.h" | |
31 | #include "fs-io.h" | |
32 | #include "fsck.h" | |
33 | #include "inode.h" | |
34 | #include "io.h" | |
35 | #include "journal.h" | |
36 | #include "journal_reclaim.h" | |
1dd7f9d9 | 37 | #include "journal_seq_blacklist.h" |
1c6fdbd8 KO |
38 | #include "move.h" |
39 | #include "migrate.h" | |
40 | #include "movinggc.h" | |
41 | #include "quota.h" | |
42 | #include "rebalance.h" | |
43 | #include "recovery.h" | |
44 | #include "replicas.h" | |
14b393ee | 45 | #include "subvolume.h" |
1c6fdbd8 KO |
46 | #include "super.h" |
47 | #include "super-io.h" | |
48 | #include "sysfs.h" | |
49 | #include "trace.h" | |
50 | ||
51 | #include <linux/backing-dev.h> | |
52 | #include <linux/blkdev.h> | |
53 | #include <linux/debugfs.h> | |
54 | #include <linux/device.h> | |
55 | #include <linux/idr.h> | |
1c6fdbd8 KO |
56 | #include <linux/module.h> |
57 | #include <linux/percpu.h> | |
58 | #include <linux/random.h> | |
59 | #include <linux/sysfs.h> | |
60 | #include <crypto/hash.h> | |
61 | ||
62 | MODULE_LICENSE("GPL"); | |
63 | MODULE_AUTHOR("Kent Overstreet <kent.overstreet@gmail.com>"); | |
64 | ||
65 | #define KTYPE(type) \ | |
66 | static const struct attribute_group type ## _group = { \ | |
67 | .attrs = type ## _files \ | |
68 | }; \ | |
69 | \ | |
70 | static const struct attribute_group *type ## _groups[] = { \ | |
71 | &type ## _group, \ | |
72 | NULL \ | |
73 | }; \ | |
74 | \ | |
75 | static const struct kobj_type type ## _ktype = { \ | |
76 | .release = type ## _release, \ | |
77 | .sysfs_ops = &type ## _sysfs_ops, \ | |
78 | .default_groups = type ## _groups \ | |
79 | } | |
80 | ||
81 | static void bch2_fs_release(struct kobject *); | |
82 | static void bch2_dev_release(struct kobject *); | |
104c6974 DH |
83 | static void bch2_fs_counters_release(struct kobject *k) |
84 | { | |
85 | } | |
1c6fdbd8 KO |
86 | |
87 | static void bch2_fs_internal_release(struct kobject *k) | |
88 | { | |
89 | } | |
90 | ||
91 | static void bch2_fs_opts_dir_release(struct kobject *k) | |
92 | { | |
93 | } | |
94 | ||
95 | static void bch2_fs_time_stats_release(struct kobject *k) | |
96 | { | |
97 | } | |
98 | ||
99 | KTYPE(bch2_fs); | |
104c6974 | 100 | KTYPE(bch2_fs_counters); |
1c6fdbd8 KO |
101 | KTYPE(bch2_fs_internal); |
102 | KTYPE(bch2_fs_opts_dir); | |
103 | KTYPE(bch2_fs_time_stats); | |
104 | KTYPE(bch2_dev); | |
105 | ||
106 | static struct kset *bcachefs_kset; | |
107 | static LIST_HEAD(bch_fs_list); | |
108 | static DEFINE_MUTEX(bch_fs_list_lock); | |
109 | ||
d94189ad | 110 | DECLARE_WAIT_QUEUE_HEAD(bch2_read_only_wait); |
1c6fdbd8 KO |
111 | |
112 | static void bch2_dev_free(struct bch_dev *); | |
113 | static int bch2_dev_alloc(struct bch_fs *, unsigned); | |
114 | static int bch2_dev_sysfs_online(struct bch_fs *, struct bch_dev *); | |
115 | static void __bch2_dev_read_only(struct bch_fs *, struct bch_dev *); | |
116 | ||
117 | struct bch_fs *bch2_dev_to_fs(dev_t dev) | |
118 | { | |
119 | struct bch_fs *c; | |
120 | struct bch_dev *ca; | |
121 | unsigned i; | |
122 | ||
123 | mutex_lock(&bch_fs_list_lock); | |
124 | rcu_read_lock(); | |
125 | ||
126 | list_for_each_entry(c, &bch_fs_list, list) | |
127 | for_each_member_device_rcu(ca, c, i, NULL) | |
ec4ab9d2 | 128 | if (ca->disk_sb.bdev && ca->disk_sb.bdev->bd_dev == dev) { |
1c6fdbd8 KO |
129 | closure_get(&c->cl); |
130 | goto found; | |
131 | } | |
132 | c = NULL; | |
133 | found: | |
134 | rcu_read_unlock(); | |
135 | mutex_unlock(&bch_fs_list_lock); | |
136 | ||
137 | return c; | |
138 | } | |
139 | ||
140 | static struct bch_fs *__bch2_uuid_to_fs(__uuid_t uuid) | |
141 | { | |
142 | struct bch_fs *c; | |
143 | ||
144 | lockdep_assert_held(&bch_fs_list_lock); | |
145 | ||
146 | list_for_each_entry(c, &bch_fs_list, list) | |
147 | if (!memcmp(&c->disk_sb.sb->uuid, &uuid, sizeof(uuid))) | |
148 | return c; | |
149 | ||
150 | return NULL; | |
151 | } | |
152 | ||
153 | struct bch_fs *bch2_uuid_to_fs(__uuid_t uuid) | |
154 | { | |
155 | struct bch_fs *c; | |
156 | ||
157 | mutex_lock(&bch_fs_list_lock); | |
158 | c = __bch2_uuid_to_fs(uuid); | |
159 | if (c) | |
160 | closure_get(&c->cl); | |
161 | mutex_unlock(&bch_fs_list_lock); | |
162 | ||
163 | return c; | |
164 | } | |
165 | ||
180fb49d KO |
166 | static void bch2_dev_usage_journal_reserve(struct bch_fs *c) |
167 | { | |
168 | struct bch_dev *ca; | |
169 | unsigned i, nr = 0, u64s = | |
4b8f89af KO |
170 | ((sizeof(struct jset_entry_dev_usage) + |
171 | sizeof(struct jset_entry_dev_usage_type) * BCH_DATA_NR)) / | |
172 | sizeof(u64); | |
180fb49d KO |
173 | |
174 | rcu_read_lock(); | |
175 | for_each_member_device_rcu(ca, c, i, NULL) | |
176 | nr++; | |
177 | rcu_read_unlock(); | |
178 | ||
179 | bch2_journal_entry_res_resize(&c->journal, | |
180 | &c->dev_usage_journal_res, u64s * nr); | |
181 | } | |
182 | ||
1c6fdbd8 KO |
183 | /* Filesystem RO/RW: */ |
184 | ||
185 | /* | |
186 | * For startup/shutdown of RW stuff, the dependencies are: | |
187 | * | |
188 | * - foreground writes depend on copygc and rebalance (to free up space) | |
189 | * | |
190 | * - copygc and rebalance depend on mark and sweep gc (they actually probably | |
191 | * don't because they either reserve ahead of time or don't block if | |
192 | * allocations fail, but allocations can require mark and sweep gc to run | |
193 | * because of generation number wraparound) | |
194 | * | |
195 | * - all of the above depends on the allocator threads | |
196 | * | |
197 | * - allocator depends on the journal (when it rewrites prios and gens) | |
198 | */ | |
199 | ||
200 | static void __bch2_fs_read_only(struct bch_fs *c) | |
201 | { | |
202 | struct bch_dev *ca; | |
d5f70c1f | 203 | unsigned i, clean_passes = 0; |
c0960603 | 204 | u64 seq = 0; |
1c6fdbd8 KO |
205 | |
206 | bch2_rebalance_stop(c); | |
e6d11615 | 207 | bch2_copygc_stop(c); |
1c6fdbd8 KO |
208 | bch2_gc_thread_stop(c); |
209 | ||
039fc4c5 | 210 | bch_verbose(c, "flushing journal and stopping allocators"); |
460651ee | 211 | |
039fc4c5 KO |
212 | do { |
213 | clean_passes++; | |
430735cd | 214 | |
c0960603 KO |
215 | if (bch2_btree_interior_updates_flush(c) || |
216 | bch2_journal_flush_all_pins(&c->journal) || | |
217 | bch2_btree_flush_all_writes(c) || | |
218 | seq != atomic64_read(&c->journal.seq)) { | |
219 | seq = atomic64_read(&c->journal.seq); | |
039fc4c5 KO |
220 | clean_passes = 0; |
221 | } | |
d5f70c1f | 222 | } while (clean_passes < 2); |
2340fd9d | 223 | |
c0960603 | 224 | bch_verbose(c, "flushing journal and stopping allocators complete"); |
00b8ccf7 | 225 | |
c0960603 KO |
226 | if (test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags) && |
227 | !test_bit(BCH_FS_EMERGENCY_RO, &c->flags)) | |
228 | set_bit(BCH_FS_CLEAN_SHUTDOWN, &c->flags); | |
1c6fdbd8 KO |
229 | bch2_fs_journal_stop(&c->journal); |
230 | ||
1c6fdbd8 KO |
231 | /* |
232 | * After stopping journal: | |
233 | */ | |
234 | for_each_member_device(ca, c, i) | |
235 | bch2_dev_allocator_remove(c, ca); | |
236 | } | |
237 | ||
d94189ad | 238 | #ifndef BCH_WRITE_REF_DEBUG |
1c6fdbd8 KO |
239 | static void bch2_writes_disabled(struct percpu_ref *writes) |
240 | { | |
241 | struct bch_fs *c = container_of(writes, struct bch_fs, writes); | |
242 | ||
243 | set_bit(BCH_FS_WRITE_DISABLE_COMPLETE, &c->flags); | |
d94189ad | 244 | wake_up(&bch2_read_only_wait); |
1c6fdbd8 | 245 | } |
d94189ad | 246 | #endif |
1c6fdbd8 KO |
247 | |
248 | void bch2_fs_read_only(struct bch_fs *c) | |
249 | { | |
134915f3 | 250 | if (!test_bit(BCH_FS_RW, &c->flags)) { |
9ae28f82 | 251 | bch2_journal_reclaim_stop(&c->journal); |
1c6fdbd8 | 252 | return; |
134915f3 | 253 | } |
1c6fdbd8 KO |
254 | |
255 | BUG_ON(test_bit(BCH_FS_WRITE_DISABLE_COMPLETE, &c->flags)); | |
256 | ||
257 | /* | |
258 | * Block new foreground-end write operations from starting - any new | |
259 | * writes will return -EROFS: | |
1c6fdbd8 | 260 | */ |
d94189ad KO |
261 | set_bit(BCH_FS_GOING_RO, &c->flags); |
262 | #ifndef BCH_WRITE_REF_DEBUG | |
1c6fdbd8 | 263 | percpu_ref_kill(&c->writes); |
d94189ad KO |
264 | #else |
265 | for (unsigned i = 0; i < BCH_WRITE_REF_NR; i++) | |
266 | bch2_write_ref_put(c, i); | |
267 | #endif | |
1c6fdbd8 | 268 | |
1c6fdbd8 KO |
269 | /* |
270 | * If we're not doing an emergency shutdown, we want to wait on | |
271 | * outstanding writes to complete so they don't see spurious errors due | |
272 | * to shutting down the allocator: | |
273 | * | |
274 | * If we are doing an emergency shutdown outstanding writes may | |
275 | * hang until we shutdown the allocator so we don't want to wait | |
276 | * on outstanding writes before shutting everything down - but | |
277 | * we do need to wait on them before returning and signalling | |
278 | * that going RO is complete: | |
279 | */ | |
d94189ad | 280 | wait_event(bch2_read_only_wait, |
1c6fdbd8 KO |
281 | test_bit(BCH_FS_WRITE_DISABLE_COMPLETE, &c->flags) || |
282 | test_bit(BCH_FS_EMERGENCY_RO, &c->flags)); | |
283 | ||
284 | __bch2_fs_read_only(c); | |
285 | ||
d94189ad | 286 | wait_event(bch2_read_only_wait, |
1c6fdbd8 KO |
287 | test_bit(BCH_FS_WRITE_DISABLE_COMPLETE, &c->flags)); |
288 | ||
289 | clear_bit(BCH_FS_WRITE_DISABLE_COMPLETE, &c->flags); | |
d94189ad | 290 | clear_bit(BCH_FS_GOING_RO, &c->flags); |
1c6fdbd8 KO |
291 | |
292 | if (!bch2_journal_error(&c->journal) && | |
293 | !test_bit(BCH_FS_ERROR, &c->flags) && | |
3aea4342 | 294 | !test_bit(BCH_FS_EMERGENCY_RO, &c->flags) && |
a0e0bda1 | 295 | test_bit(BCH_FS_STARTED, &c->flags) && |
c0960603 | 296 | test_bit(BCH_FS_CLEAN_SHUTDOWN, &c->flags) && |
b2930396 KO |
297 | !c->opts.norecovery) { |
298 | bch_verbose(c, "marking filesystem clean"); | |
134915f3 | 299 | bch2_fs_mark_clean(c); |
b2930396 | 300 | } |
1c6fdbd8 | 301 | |
134915f3 | 302 | clear_bit(BCH_FS_RW, &c->flags); |
1c6fdbd8 KO |
303 | } |
304 | ||
305 | static void bch2_fs_read_only_work(struct work_struct *work) | |
306 | { | |
307 | struct bch_fs *c = | |
308 | container_of(work, struct bch_fs, read_only_work); | |
309 | ||
1ada1606 | 310 | down_write(&c->state_lock); |
1c6fdbd8 | 311 | bch2_fs_read_only(c); |
1ada1606 | 312 | up_write(&c->state_lock); |
1c6fdbd8 KO |
313 | } |
314 | ||
315 | static void bch2_fs_read_only_async(struct bch_fs *c) | |
316 | { | |
317 | queue_work(system_long_wq, &c->read_only_work); | |
318 | } | |
319 | ||
320 | bool bch2_fs_emergency_read_only(struct bch_fs *c) | |
321 | { | |
322 | bool ret = !test_and_set_bit(BCH_FS_EMERGENCY_RO, &c->flags); | |
323 | ||
1c6fdbd8 | 324 | bch2_journal_halt(&c->journal); |
9f115ce9 | 325 | bch2_fs_read_only_async(c); |
1c6fdbd8 | 326 | |
d94189ad | 327 | wake_up(&bch2_read_only_wait); |
1c6fdbd8 KO |
328 | return ret; |
329 | } | |
330 | ||
134915f3 | 331 | static int bch2_fs_read_write_late(struct bch_fs *c) |
1c6fdbd8 | 332 | { |
134915f3 | 333 | int ret; |
1c6fdbd8 | 334 | |
134915f3 KO |
335 | ret = bch2_rebalance_start(c); |
336 | if (ret) { | |
337 | bch_err(c, "error starting rebalance thread"); | |
338 | return ret; | |
339 | } | |
340 | ||
134915f3 KO |
341 | return 0; |
342 | } | |
1c6fdbd8 | 343 | |
e731d466 | 344 | static int __bch2_fs_read_write(struct bch_fs *c, bool early) |
134915f3 KO |
345 | { |
346 | struct bch_dev *ca; | |
347 | unsigned i; | |
348 | int ret; | |
349 | ||
aae15aaf KO |
350 | if (test_bit(BCH_FS_INITIAL_GC_UNFIXED, &c->flags)) { |
351 | bch_err(c, "cannot go rw, unfixed btree errors"); | |
352 | return -EROFS; | |
353 | } | |
354 | ||
134915f3 KO |
355 | if (test_bit(BCH_FS_RW, &c->flags)) |
356 | return 0; | |
357 | ||
619f5bee KO |
358 | /* |
359 | * nochanges is used for fsck -n mode - we have to allow going rw | |
360 | * during recovery for that to work: | |
361 | */ | |
362 | if (c->opts.norecovery || | |
363 | (c->opts.nochanges && | |
364 | (!early || c->opts.read_only))) | |
365 | return -EROFS; | |
330581f1 | 366 | |
2c944fa1 KO |
367 | bch_info(c, "going read-write"); |
368 | ||
134915f3 KO |
369 | ret = bch2_fs_mark_dirty(c); |
370 | if (ret) | |
371 | goto err; | |
1c6fdbd8 | 372 | |
c0960603 | 373 | clear_bit(BCH_FS_CLEAN_SHUTDOWN, &c->flags); |
2340fd9d | 374 | |
b9004e85 KO |
375 | /* |
376 | * First journal write must be a flush write: after a clean shutdown we | |
377 | * don't read the journal, so the first journal write may end up | |
378 | * overwriting whatever was there previously, and there must always be | |
379 | * at least one non-flush write in the journal or recovery will fail: | |
380 | */ | |
381 | set_bit(JOURNAL_NEED_FLUSH_WRITE, &c->journal.flags); | |
382 | ||
1c6fdbd8 KO |
383 | for_each_rw_member(ca, c, i) |
384 | bch2_dev_allocator_add(c, ca); | |
385 | bch2_recalc_capacity(c); | |
386 | ||
5f5c7466 KO |
387 | ret = bch2_gc_thread_start(c); |
388 | if (ret) { | |
389 | bch_err(c, "error starting gc thread"); | |
390 | return ret; | |
391 | } | |
392 | ||
393 | ret = bch2_copygc_start(c); | |
394 | if (ret) { | |
395 | bch_err(c, "error starting copygc thread"); | |
396 | return ret; | |
397 | } | |
398 | ||
134915f3 KO |
399 | if (!early) { |
400 | ret = bch2_fs_read_write_late(c); | |
401 | if (ret) | |
402 | goto err; | |
403 | } | |
1c6fdbd8 | 404 | |
d94189ad | 405 | #ifndef BCH_WRITE_REF_DEBUG |
134915f3 | 406 | percpu_ref_reinit(&c->writes); |
d94189ad KO |
407 | #else |
408 | for (unsigned i = 0; i < BCH_WRITE_REF_NR; i++) { | |
409 | BUG_ON(atomic_long_read(&c->writes[i])); | |
410 | atomic_long_inc(&c->writes[i]); | |
411 | } | |
412 | #endif | |
134915f3 | 413 | set_bit(BCH_FS_RW, &c->flags); |
4932e07e | 414 | set_bit(BCH_FS_WAS_RW, &c->flags); |
dd81a060 KO |
415 | |
416 | bch2_do_discards(c); | |
417 | bch2_do_invalidates(c); | |
418 | bch2_do_stripe_deletes(c); | |
134915f3 | 419 | return 0; |
1c6fdbd8 KO |
420 | err: |
421 | __bch2_fs_read_only(c); | |
134915f3 KO |
422 | return ret; |
423 | } | |
424 | ||
425 | int bch2_fs_read_write(struct bch_fs *c) | |
426 | { | |
427 | return __bch2_fs_read_write(c, false); | |
428 | } | |
429 | ||
430 | int bch2_fs_read_write_early(struct bch_fs *c) | |
431 | { | |
432 | lockdep_assert_held(&c->state_lock); | |
433 | ||
134915f3 | 434 | return __bch2_fs_read_write(c, true); |
1c6fdbd8 KO |
435 | } |
436 | ||
437 | /* Filesystem startup/shutdown: */ | |
438 | ||
d5e4dcc2 | 439 | static void __bch2_fs_free(struct bch_fs *c) |
1c6fdbd8 KO |
440 | { |
441 | unsigned i; | |
1a21bf98 | 442 | int cpu; |
1c6fdbd8 KO |
443 | |
444 | for (i = 0; i < BCH_TIME_STAT_NR; i++) | |
445 | bch2_time_stats_exit(&c->times[i]); | |
446 | ||
104c6974 | 447 | bch2_fs_counters_exit(c); |
14b393ee | 448 | bch2_fs_snapshots_exit(c); |
1c6fdbd8 KO |
449 | bch2_fs_quota_exit(c); |
450 | bch2_fs_fsio_exit(c); | |
cd575ddf | 451 | bch2_fs_ec_exit(c); |
1c6fdbd8 KO |
452 | bch2_fs_encryption_exit(c); |
453 | bch2_fs_io_exit(c); | |
21aec962 | 454 | bch2_fs_buckets_waiting_for_journal_exit(c); |
c823c339 | 455 | bch2_fs_btree_interior_update_exit(c); |
36e9d698 | 456 | bch2_fs_btree_iter_exit(c); |
2ca88e5a | 457 | bch2_fs_btree_key_cache_exit(&c->btree_key_cache); |
1c6fdbd8 | 458 | bch2_fs_btree_cache_exit(c); |
9620c3ec | 459 | bch2_fs_replicas_exit(c); |
1c6fdbd8 KO |
460 | bch2_fs_journal_exit(&c->journal); |
461 | bch2_io_clock_exit(&c->io_clock[WRITE]); | |
462 | bch2_io_clock_exit(&c->io_clock[READ]); | |
463 | bch2_fs_compress_exit(c); | |
f1d786a0 | 464 | bch2_journal_keys_free(&c->journal_keys); |
ce6201c4 | 465 | bch2_journal_entries_free(c); |
9166b41d | 466 | percpu_free_rwsem(&c->mark_lock); |
5e82a9a1 | 467 | free_percpu(c->online_reserved); |
1a21bf98 | 468 | |
67e0dd8f | 469 | if (c->btree_paths_bufs) |
1a21bf98 | 470 | for_each_possible_cpu(cpu) |
67e0dd8f | 471 | kfree(per_cpu_ptr(c->btree_paths_bufs, cpu)->path); |
1a21bf98 | 472 | |
67e0dd8f | 473 | free_percpu(c->btree_paths_bufs); |
5663a415 | 474 | free_percpu(c->pcpu); |
35189e09 | 475 | mempool_exit(&c->large_bkey_pool); |
1c6fdbd8 KO |
476 | mempool_exit(&c->btree_bounce_pool); |
477 | bioset_exit(&c->btree_bio); | |
1c6fdbd8 | 478 | mempool_exit(&c->fill_iter); |
d94189ad | 479 | #ifndef BCH_WRITE_REF_DEBUG |
1c6fdbd8 | 480 | percpu_ref_exit(&c->writes); |
d94189ad | 481 | #endif |
1c6fdbd8 | 482 | kfree(rcu_dereference_protected(c->disk_groups, 1)); |
1dd7f9d9 | 483 | kfree(c->journal_seq_blacklist_table); |
b5e8a699 | 484 | kfree(c->unused_inode_hints); |
e6d11615 | 485 | free_heap(&c->copygc_heap); |
1c6fdbd8 | 486 | |
3e3e02e6 KO |
487 | if (c->io_complete_wq) |
488 | destroy_workqueue(c->io_complete_wq); | |
1c6fdbd8 KO |
489 | if (c->copygc_wq) |
490 | destroy_workqueue(c->copygc_wq); | |
9f1833ca KO |
491 | if (c->btree_io_complete_wq) |
492 | destroy_workqueue(c->btree_io_complete_wq); | |
731bdd2e KO |
493 | if (c->btree_update_wq) |
494 | destroy_workqueue(c->btree_update_wq); | |
1c6fdbd8 | 495 | |
9d8022db | 496 | bch2_free_super(&c->disk_sb); |
1c6fdbd8 KO |
497 | kvpfree(c, sizeof(*c)); |
498 | module_put(THIS_MODULE); | |
499 | } | |
500 | ||
501 | static void bch2_fs_release(struct kobject *kobj) | |
502 | { | |
503 | struct bch_fs *c = container_of(kobj, struct bch_fs, kobj); | |
504 | ||
d5e4dcc2 | 505 | __bch2_fs_free(c); |
1c6fdbd8 KO |
506 | } |
507 | ||
d5e4dcc2 | 508 | void __bch2_fs_stop(struct bch_fs *c) |
1c6fdbd8 KO |
509 | { |
510 | struct bch_dev *ca; | |
511 | unsigned i; | |
512 | ||
af1c6871 KO |
513 | bch_verbose(c, "shutting down"); |
514 | ||
1dd7f9d9 KO |
515 | set_bit(BCH_FS_STOPPING, &c->flags); |
516 | ||
9b6e2f1e KO |
517 | cancel_work_sync(&c->journal_seq_blacklist_gc_work); |
518 | ||
1ada1606 | 519 | down_write(&c->state_lock); |
883f1a7c | 520 | bch2_fs_read_only(c); |
1ada1606 | 521 | up_write(&c->state_lock); |
883f1a7c | 522 | |
1c6fdbd8 KO |
523 | for_each_member_device(ca, c, i) |
524 | if (ca->kobj.state_in_sysfs && | |
525 | ca->disk_sb.bdev) | |
526 | sysfs_remove_link(bdev_kobj(ca->disk_sb.bdev), "bcachefs"); | |
527 | ||
528 | if (c->kobj.state_in_sysfs) | |
529 | kobject_del(&c->kobj); | |
530 | ||
531 | bch2_fs_debug_exit(c); | |
532 | bch2_fs_chardev_exit(c); | |
533 | ||
104c6974 | 534 | kobject_put(&c->counters_kobj); |
1c6fdbd8 KO |
535 | kobject_put(&c->time_stats); |
536 | kobject_put(&c->opts_dir); | |
537 | kobject_put(&c->internal); | |
538 | ||
1c6fdbd8 KO |
539 | /* btree prefetch might have kicked off reads in the background: */ |
540 | bch2_btree_flush_all_reads(c); | |
541 | ||
542 | for_each_member_device(ca, c, i) | |
543 | cancel_work_sync(&ca->io_error_work); | |
544 | ||
1c6fdbd8 | 545 | cancel_work_sync(&c->read_only_work); |
d5e4dcc2 KO |
546 | } |
547 | ||
548 | void bch2_fs_free(struct bch_fs *c) | |
549 | { | |
550 | unsigned i; | |
551 | ||
552 | mutex_lock(&bch_fs_list_lock); | |
553 | list_del(&c->list); | |
554 | mutex_unlock(&bch_fs_list_lock); | |
555 | ||
556 | closure_sync(&c->cl); | |
557 | closure_debug_destroy(&c->cl); | |
558 | ||
559 | for (i = 0; i < c->sb.nr_devices; i++) { | |
560 | struct bch_dev *ca = rcu_dereference_protected(c->devs[i], true); | |
1c6fdbd8 | 561 | |
d5e4dcc2 KO |
562 | if (ca) { |
563 | bch2_free_super(&ca->disk_sb); | |
564 | bch2_dev_free(ca); | |
565 | } | |
566 | } | |
1c6fdbd8 | 567 | |
af1c6871 KO |
568 | bch_verbose(c, "shutdown complete"); |
569 | ||
1c6fdbd8 KO |
570 | kobject_put(&c->kobj); |
571 | } | |
572 | ||
d5e4dcc2 KO |
573 | void bch2_fs_stop(struct bch_fs *c) |
574 | { | |
575 | __bch2_fs_stop(c); | |
576 | bch2_fs_free(c); | |
577 | } | |
578 | ||
e2b60560 | 579 | static int bch2_fs_online(struct bch_fs *c) |
1c6fdbd8 KO |
580 | { |
581 | struct bch_dev *ca; | |
1c6fdbd8 | 582 | unsigned i; |
e2b60560 | 583 | int ret = 0; |
1c6fdbd8 KO |
584 | |
585 | lockdep_assert_held(&bch_fs_list_lock); | |
586 | ||
e2b60560 KO |
587 | if (__bch2_uuid_to_fs(c->sb.uuid)) { |
588 | bch_err(c, "filesystem UUID already open"); | |
589 | return -EINVAL; | |
590 | } | |
1c6fdbd8 KO |
591 | |
592 | ret = bch2_fs_chardev_init(c); | |
e2b60560 KO |
593 | if (ret) { |
594 | bch_err(c, "error creating character device"); | |
595 | return ret; | |
596 | } | |
1c6fdbd8 KO |
597 | |
598 | bch2_fs_debug_init(c); | |
599 | ||
e2b60560 KO |
600 | ret = kobject_add(&c->kobj, NULL, "%pU", c->sb.user_uuid.b) ?: |
601 | kobject_add(&c->internal, &c->kobj, "internal") ?: | |
602 | kobject_add(&c->opts_dir, &c->kobj, "options") ?: | |
603 | kobject_add(&c->time_stats, &c->kobj, "time_stats") ?: | |
104c6974 | 604 | kobject_add(&c->counters_kobj, &c->kobj, "counters") ?: |
e2b60560 KO |
605 | bch2_opts_create_sysfs_files(&c->opts_dir); |
606 | if (ret) { | |
607 | bch_err(c, "error creating sysfs objects"); | |
608 | return ret; | |
609 | } | |
1c6fdbd8 | 610 | |
1ada1606 | 611 | down_write(&c->state_lock); |
1c6fdbd8 | 612 | |
e2b60560 KO |
613 | for_each_member_device(ca, c, i) { |
614 | ret = bch2_dev_sysfs_online(c, ca); | |
615 | if (ret) { | |
616 | bch_err(c, "error creating sysfs objects"); | |
3a402c8d | 617 | percpu_ref_put(&ca->ref); |
1c6fdbd8 | 618 | goto err; |
3a402c8d | 619 | } |
e2b60560 | 620 | } |
1c6fdbd8 | 621 | |
e2b60560 | 622 | BUG_ON(!list_empty(&c->list)); |
1c6fdbd8 | 623 | list_add(&c->list, &bch_fs_list); |
1c6fdbd8 | 624 | err: |
1ada1606 | 625 | up_write(&c->state_lock); |
e2b60560 | 626 | return ret; |
1c6fdbd8 KO |
627 | } |
628 | ||
629 | static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts) | |
630 | { | |
631 | struct bch_sb_field_members *mi; | |
632 | struct bch_fs *c; | |
401ec4db | 633 | struct printbuf name = PRINTBUF; |
ecf37a4a | 634 | unsigned i, iter_size; |
7be9ab63 | 635 | int ret = 0; |
1c6fdbd8 KO |
636 | |
637 | pr_verbose_init(opts, ""); | |
638 | ||
639 | c = kvpmalloc(sizeof(struct bch_fs), GFP_KERNEL|__GFP_ZERO); | |
7be9ab63 CW |
640 | if (!c) { |
641 | c = ERR_PTR(-ENOMEM); | |
1c6fdbd8 | 642 | goto out; |
7be9ab63 | 643 | } |
1c6fdbd8 KO |
644 | |
645 | __module_get(THIS_MODULE); | |
646 | ||
505b7a4c KO |
647 | closure_init(&c->cl, NULL); |
648 | ||
649 | c->kobj.kset = bcachefs_kset; | |
650 | kobject_init(&c->kobj, &bch2_fs_ktype); | |
651 | kobject_init(&c->internal, &bch2_fs_internal_ktype); | |
652 | kobject_init(&c->opts_dir, &bch2_fs_opts_dir_ktype); | |
653 | kobject_init(&c->time_stats, &bch2_fs_time_stats_ktype); | |
104c6974 | 654 | kobject_init(&c->counters_kobj, &bch2_fs_counters_ktype); |
505b7a4c | 655 | |
1c6fdbd8 KO |
656 | c->minor = -1; |
657 | c->disk_sb.fs_sb = true; | |
658 | ||
1ada1606 | 659 | init_rwsem(&c->state_lock); |
1c6fdbd8 KO |
660 | mutex_init(&c->sb_lock); |
661 | mutex_init(&c->replicas_gc_lock); | |
662 | mutex_init(&c->btree_root_lock); | |
663 | INIT_WORK(&c->read_only_work, bch2_fs_read_only_work); | |
664 | ||
665 | init_rwsem(&c->gc_lock); | |
c45c8667 | 666 | mutex_init(&c->gc_gens_lock); |
1c6fdbd8 KO |
667 | |
668 | for (i = 0; i < BCH_TIME_STAT_NR; i++) | |
669 | bch2_time_stats_init(&c->times[i]); | |
670 | ||
e6d11615 | 671 | bch2_fs_copygc_init(c); |
2ca88e5a | 672 | bch2_fs_btree_key_cache_init_early(&c->btree_key_cache); |
b092dadd KO |
673 | bch2_fs_allocator_background_init(c); |
674 | bch2_fs_allocator_foreground_init(c); | |
1c6fdbd8 KO |
675 | bch2_fs_rebalance_init(c); |
676 | bch2_fs_quota_init(c); | |
84c72755 | 677 | bch2_fs_ec_init_early(c); |
1c6fdbd8 KO |
678 | |
679 | INIT_LIST_HEAD(&c->list); | |
680 | ||
4d8100da KO |
681 | mutex_init(&c->usage_scratch_lock); |
682 | ||
1c6fdbd8 | 683 | mutex_init(&c->bio_bounce_pages_lock); |
14b393ee | 684 | mutex_init(&c->snapshot_table_lock); |
1c6fdbd8 | 685 | |
1c6fdbd8 | 686 | spin_lock_init(&c->btree_write_error_lock); |
1c6fdbd8 | 687 | |
9b6e2f1e KO |
688 | INIT_WORK(&c->journal_seq_blacklist_gc_work, |
689 | bch2_blacklist_entries_gc); | |
690 | ||
5b593ee1 | 691 | INIT_LIST_HEAD(&c->journal_iters); |
f1d786a0 | 692 | |
1c6fdbd8 KO |
693 | INIT_LIST_HEAD(&c->fsck_errors); |
694 | mutex_init(&c->fsck_error_lock); | |
695 | ||
703e2a43 KO |
696 | INIT_LIST_HEAD(&c->ec_stripe_head_list); |
697 | mutex_init(&c->ec_stripe_head_lock); | |
698 | ||
699 | INIT_LIST_HEAD(&c->ec_stripe_new_list); | |
700 | mutex_init(&c->ec_stripe_new_lock); | |
701 | ||
8dd6ed94 BH |
702 | INIT_LIST_HEAD(&c->data_progress_list); |
703 | mutex_init(&c->data_progress_lock); | |
704 | ||
cd575ddf KO |
705 | spin_lock_init(&c->ec_stripes_heap_lock); |
706 | ||
1c6fdbd8 KO |
707 | seqcount_init(&c->gc_pos_lock); |
708 | ||
5e82a9a1 KO |
709 | seqcount_init(&c->usage_lock); |
710 | ||
ef1b2092 KO |
711 | sema_init(&c->io_in_flight, 128); |
712 | ||
1c6fdbd8 KO |
713 | c->copy_gc_enabled = 1; |
714 | c->rebalance.enabled = 1; | |
715 | c->promote_whole_extents = true; | |
716 | ||
991ba021 KO |
717 | c->journal.flush_write_time = &c->times[BCH_TIME_journal_flush_write]; |
718 | c->journal.noflush_write_time = &c->times[BCH_TIME_journal_noflush_write]; | |
719 | c->journal.blocked_time = &c->times[BCH_TIME_blocked_journal]; | |
720 | c->journal.flush_seq_time = &c->times[BCH_TIME_journal_flush_seq]; | |
1c6fdbd8 KO |
721 | |
722 | bch2_fs_btree_cache_init_early(&c->btree_cache); | |
723 | ||
fca1223c KO |
724 | mutex_init(&c->sectors_available_lock); |
725 | ||
e2b60560 KO |
726 | ret = percpu_init_rwsem(&c->mark_lock); |
727 | if (ret) | |
73e6ab95 KO |
728 | goto err; |
729 | ||
1c6fdbd8 | 730 | mutex_lock(&c->sb_lock); |
e2b60560 KO |
731 | ret = bch2_sb_to_fs(c, sb); |
732 | mutex_unlock(&c->sb_lock); | |
1c6fdbd8 | 733 | |
e2b60560 | 734 | if (ret) |
1c6fdbd8 | 735 | goto err; |
1c6fdbd8 | 736 | |
401ec4db | 737 | pr_uuid(&name, c->sb.user_uuid.b); |
3e3e02e6 | 738 | strscpy(c->name, name.buf, sizeof(c->name)); |
401ec4db KO |
739 | printbuf_exit(&name); |
740 | ||
741 | ret = name.allocation_failure ? -ENOMEM : 0; | |
742 | if (ret) | |
743 | goto err; | |
1c6fdbd8 | 744 | |
2430e72f KO |
745 | /* Compat: */ |
746 | if (sb->version <= bcachefs_metadata_version_inode_v2 && | |
747 | !BCH_SB_JOURNAL_FLUSH_DELAY(sb)) | |
748 | SET_BCH_SB_JOURNAL_FLUSH_DELAY(sb, 1000); | |
749 | ||
750 | if (sb->version <= bcachefs_metadata_version_inode_v2 && | |
751 | !BCH_SB_JOURNAL_RECLAIM_DELAY(sb)) | |
752 | SET_BCH_SB_JOURNAL_RECLAIM_DELAY(sb, 100); | |
753 | ||
1c6fdbd8 | 754 | c->opts = bch2_opts_default; |
8244f320 KO |
755 | ret = bch2_opts_from_sb(&c->opts, sb); |
756 | if (ret) | |
757 | goto err; | |
758 | ||
1c6fdbd8 KO |
759 | bch2_opts_apply(&c->opts, opts); |
760 | ||
7c8f6f98 KO |
761 | c->btree_key_cache_btrees |= 1U << BTREE_ID_alloc; |
762 | if (c->opts.inodes_use_key_cache) | |
763 | c->btree_key_cache_btrees |= 1U << BTREE_ID_inodes; | |
764 | ||
8244f320 | 765 | c->block_bits = ilog2(block_sectors(c)); |
1c6fdbd8 KO |
766 | c->btree_foreground_merge_threshold = BTREE_FOREGROUND_MERGE_THRESHOLD(c); |
767 | ||
7be9ab63 | 768 | if (bch2_fs_init_fault("fs_alloc")) { |
e2b60560 KO |
769 | bch_err(c, "fs_alloc fault injected"); |
770 | ret = -EFAULT; | |
1c6fdbd8 | 771 | goto err; |
7be9ab63 | 772 | } |
1c6fdbd8 | 773 | |
ae2f17d5 | 774 | iter_size = sizeof(struct sort_iter) + |
1c6fdbd8 | 775 | (btree_blocks(c) + 1) * 2 * |
ae2f17d5 | 776 | sizeof(struct sort_iter_set); |
1c6fdbd8 | 777 | |
b5e8a699 KO |
778 | c->inode_shard_bits = ilog2(roundup_pow_of_two(num_possible_cpus())); |
779 | ||
731bdd2e | 780 | if (!(c->btree_update_wq = alloc_workqueue("bcachefs", |
b17d3cec | 781 | WQ_FREEZABLE|WQ_UNBOUND|WQ_MEM_RECLAIM, 512)) || |
9f1833ca | 782 | !(c->btree_io_complete_wq = alloc_workqueue("bcachefs_btree_io", |
9f2772c4 | 783 | WQ_FREEZABLE|WQ_MEM_RECLAIM, 1)) || |
2f33ece9 KO |
784 | !(c->copygc_wq = alloc_workqueue("bcachefs_copygc", |
785 | WQ_FREEZABLE|WQ_MEM_RECLAIM|WQ_CPU_INTENSIVE, 1)) || | |
731bdd2e KO |
786 | !(c->io_complete_wq = alloc_workqueue("bcachefs_io", |
787 | WQ_FREEZABLE|WQ_HIGHPRI|WQ_MEM_RECLAIM, 1)) || | |
d94189ad | 788 | #ifndef BCH_WRITE_REF_DEBUG |
134915f3 KO |
789 | percpu_ref_init(&c->writes, bch2_writes_disabled, |
790 | PERCPU_REF_INIT_DEAD, GFP_KERNEL) || | |
d94189ad | 791 | #endif |
1c6fdbd8 KO |
792 | mempool_init_kmalloc_pool(&c->fill_iter, 1, iter_size) || |
793 | bioset_init(&c->btree_bio, 1, | |
794 | max(offsetof(struct btree_read_bio, bio), | |
795 | offsetof(struct btree_write_bio, wbio.bio)), | |
796 | BIOSET_NEED_BVECS) || | |
5663a415 | 797 | !(c->pcpu = alloc_percpu(struct bch_fs_pcpu)) || |
5e82a9a1 | 798 | !(c->online_reserved = alloc_percpu(u64)) || |
67e0dd8f | 799 | !(c->btree_paths_bufs = alloc_percpu(struct btree_path_buf)) || |
1c6fdbd8 KO |
800 | mempool_init_kvpmalloc_pool(&c->btree_bounce_pool, 1, |
801 | btree_bytes(c)) || | |
35189e09 | 802 | mempool_init_kmalloc_pool(&c->large_bkey_pool, 1, 2048) || |
b5e8a699 | 803 | !(c->unused_inode_hints = kcalloc(1U << c->inode_shard_bits, |
e2b60560 | 804 | sizeof(u64), GFP_KERNEL))) { |
7be9ab63 CW |
805 | ret = -ENOMEM; |
806 | goto err; | |
807 | } | |
808 | ||
f3b8403e KO |
809 | ret = bch2_fs_counters_init(c) ?: |
810 | bch2_io_clock_init(&c->io_clock[READ]) ?: | |
e2b60560 KO |
811 | bch2_io_clock_init(&c->io_clock[WRITE]) ?: |
812 | bch2_fs_journal_init(&c->journal) ?: | |
813 | bch2_fs_replicas_init(c) ?: | |
814 | bch2_fs_btree_cache_init(c) ?: | |
815 | bch2_fs_btree_key_cache_init(&c->btree_key_cache) ?: | |
816 | bch2_fs_btree_iter_init(c) ?: | |
817 | bch2_fs_btree_interior_update_init(c) ?: | |
9b688da3 | 818 | bch2_fs_buckets_waiting_for_journal_init(c) ?: |
e2b60560 KO |
819 | bch2_fs_subvolumes_init(c) ?: |
820 | bch2_fs_io_init(c) ?: | |
821 | bch2_fs_encryption_init(c) ?: | |
822 | bch2_fs_compress_init(c) ?: | |
823 | bch2_fs_ec_init(c) ?: | |
f3b8403e | 824 | bch2_fs_fsio_init(c); |
7be9ab63 | 825 | if (ret) |
1c6fdbd8 KO |
826 | goto err; |
827 | ||
828 | mi = bch2_sb_get_members(c->disk_sb.sb); | |
829 | for (i = 0; i < c->sb.nr_devices; i++) | |
830 | if (bch2_dev_exists(c->disk_sb.sb, mi, i) && | |
7be9ab63 | 831 | bch2_dev_alloc(c, i)) { |
e2b60560 | 832 | ret = -EEXIST; |
1c6fdbd8 | 833 | goto err; |
7be9ab63 | 834 | } |
1c6fdbd8 | 835 | |
4b8f89af KO |
836 | bch2_journal_entry_res_resize(&c->journal, |
837 | &c->btree_root_journal_res, | |
838 | BTREE_ID_NR * (JSET_KEYS_U64s + BKEY_BTREE_PTR_U64s_MAX)); | |
839 | bch2_dev_usage_journal_reserve(c); | |
840 | bch2_journal_entry_res_resize(&c->journal, | |
841 | &c->clock_journal_res, | |
842 | (sizeof(struct jset_entry_clock) / sizeof(u64)) * 2); | |
843 | ||
1c6fdbd8 | 844 | mutex_lock(&bch_fs_list_lock); |
e2b60560 | 845 | ret = bch2_fs_online(c); |
1c6fdbd8 | 846 | mutex_unlock(&bch_fs_list_lock); |
e2b60560 KO |
847 | |
848 | if (ret) | |
1c6fdbd8 | 849 | goto err; |
1c6fdbd8 | 850 | out: |
7be9ab63 | 851 | pr_verbose_init(opts, "ret %i", PTR_ERR_OR_ZERO(c)); |
1c6fdbd8 KO |
852 | return c; |
853 | err: | |
854 | bch2_fs_free(c); | |
7be9ab63 | 855 | c = ERR_PTR(ret); |
1c6fdbd8 KO |
856 | goto out; |
857 | } | |
858 | ||
619f5bee KO |
859 | noinline_for_stack |
860 | static void print_mount_opts(struct bch_fs *c) | |
861 | { | |
862 | enum bch_opt_id i; | |
fa8e94fa | 863 | struct printbuf p = PRINTBUF; |
619f5bee KO |
864 | bool first = true; |
865 | ||
60573ff5 KO |
866 | prt_printf(&p, "mounted version=%s", bch2_metadata_versions[c->sb.version]); |
867 | ||
619f5bee | 868 | if (c->opts.read_only) { |
60573ff5 | 869 | prt_str(&p, " opts="); |
619f5bee | 870 | first = false; |
60573ff5 | 871 | prt_printf(&p, "ro"); |
619f5bee KO |
872 | } |
873 | ||
874 | for (i = 0; i < bch2_opts_nr; i++) { | |
875 | const struct bch_option *opt = &bch2_opt_table[i]; | |
876 | u64 v = bch2_opt_get_by_id(&c->opts, i); | |
877 | ||
8244f320 | 878 | if (!(opt->flags & OPT_MOUNT)) |
619f5bee KO |
879 | continue; |
880 | ||
881 | if (v == bch2_opt_get_by_id(&bch2_opts_default, i)) | |
882 | continue; | |
883 | ||
60573ff5 | 884 | prt_str(&p, first ? " opts=" : ","); |
619f5bee | 885 | first = false; |
5521b1df | 886 | bch2_opt_to_text(&p, c, c->disk_sb.sb, opt, v, OPT_SHOW_MOUNT_STYLE); |
619f5bee KO |
887 | } |
888 | ||
60573ff5 | 889 | bch_info(c, "%s", p.buf); |
fa8e94fa | 890 | printbuf_exit(&p); |
619f5bee KO |
891 | } |
892 | ||
893 | int bch2_fs_start(struct bch_fs *c) | |
1c6fdbd8 | 894 | { |
1c6fdbd8 KO |
895 | struct bch_sb_field_members *mi; |
896 | struct bch_dev *ca; | |
a420eea6 | 897 | time64_t now = ktime_get_real_seconds(); |
1c6fdbd8 | 898 | unsigned i; |
78c0b75c | 899 | int ret; |
1c6fdbd8 | 900 | |
1ada1606 | 901 | down_write(&c->state_lock); |
1c6fdbd8 | 902 | |
134915f3 | 903 | BUG_ON(test_bit(BCH_FS_STARTED, &c->flags)); |
1c6fdbd8 KO |
904 | |
905 | mutex_lock(&c->sb_lock); | |
906 | ||
907 | for_each_online_member(ca, c, i) | |
908 | bch2_sb_from_fs(c, ca); | |
909 | ||
910 | mi = bch2_sb_get_members(c->disk_sb.sb); | |
911 | for_each_online_member(ca, c, i) | |
912 | mi->members[ca->dev_idx].last_mount = cpu_to_le64(now); | |
913 | ||
914 | mutex_unlock(&c->sb_lock); | |
915 | ||
916 | for_each_rw_member(ca, c, i) | |
917 | bch2_dev_allocator_add(c, ca); | |
918 | bch2_recalc_capacity(c); | |
919 | ||
bf8f8b20 DH |
920 | for (i = 0; i < BCH_TRANSACTIONS_NR; i++) { |
921 | mutex_lock(&c->btree_transaction_stats[i].lock); | |
922 | bch2_time_stats_init(&c->btree_transaction_stats[i].lock_hold_times); | |
923 | mutex_unlock(&c->btree_transaction_stats[i].lock); | |
924 | } | |
925 | ||
1c6fdbd8 KO |
926 | ret = BCH_SB_INITIALIZED(c->disk_sb.sb) |
927 | ? bch2_fs_recovery(c) | |
928 | : bch2_fs_initialize(c); | |
929 | if (ret) | |
930 | goto err; | |
cd575ddf KO |
931 | |
932 | ret = bch2_opts_check_may_set(c); | |
933 | if (ret) | |
934 | goto err; | |
1c6fdbd8 | 935 | |
e2b60560 KO |
936 | if (bch2_fs_init_fault("fs_start")) { |
937 | bch_err(c, "fs_start fault injected"); | |
78c0b75c | 938 | ret = -EINVAL; |
1c6fdbd8 | 939 | goto err; |
e2b60560 | 940 | } |
1c6fdbd8 | 941 | |
a9310ab0 KO |
942 | set_bit(BCH_FS_STARTED, &c->flags); |
943 | ||
619f5bee | 944 | if (c->opts.read_only || c->opts.nochanges) { |
1c6fdbd8 KO |
945 | bch2_fs_read_only(c); |
946 | } else { | |
619f5bee KO |
947 | ret = !test_bit(BCH_FS_RW, &c->flags) |
948 | ? bch2_fs_read_write(c) | |
949 | : bch2_fs_read_write_late(c); | |
950 | if (ret) | |
1c6fdbd8 KO |
951 | goto err; |
952 | } | |
953 | ||
619f5bee KO |
954 | print_mount_opts(c); |
955 | ret = 0; | |
1c6fdbd8 | 956 | out: |
1ada1606 | 957 | up_write(&c->state_lock); |
619f5bee | 958 | return ret; |
1c6fdbd8 | 959 | err: |
1ed0a5d2 | 960 | bch_err(c, "error starting filesystem: %s", bch2_err_str(ret)); |
1c6fdbd8 KO |
961 | goto out; |
962 | } | |
963 | ||
78c0b75c | 964 | static int bch2_dev_may_add(struct bch_sb *sb, struct bch_fs *c) |
1c6fdbd8 KO |
965 | { |
966 | struct bch_sb_field_members *sb_mi; | |
967 | ||
968 | sb_mi = bch2_sb_get_members(sb); | |
969 | if (!sb_mi) | |
78c0b75c | 970 | return -BCH_ERR_member_info_missing; |
1c6fdbd8 | 971 | |
8244f320 | 972 | if (le16_to_cpu(sb->block_size) != block_sectors(c)) |
78c0b75c | 973 | return -BCH_ERR_mismatched_block_size; |
1c6fdbd8 KO |
974 | |
975 | if (le16_to_cpu(sb_mi->members[sb->dev_idx].bucket_size) < | |
976 | BCH_SB_BTREE_NODE_SIZE(c->disk_sb.sb)) | |
78c0b75c | 977 | return -BCH_ERR_bucket_size_too_small; |
1c6fdbd8 | 978 | |
78c0b75c | 979 | return 0; |
1c6fdbd8 KO |
980 | } |
981 | ||
78c0b75c | 982 | static int bch2_dev_in_fs(struct bch_sb *fs, struct bch_sb *sb) |
1c6fdbd8 KO |
983 | { |
984 | struct bch_sb *newest = | |
985 | le64_to_cpu(fs->seq) > le64_to_cpu(sb->seq) ? fs : sb; | |
986 | struct bch_sb_field_members *mi = bch2_sb_get_members(newest); | |
987 | ||
988 | if (!uuid_equal(&fs->uuid, &sb->uuid)) | |
78c0b75c | 989 | return -BCH_ERR_device_not_a_member_of_filesystem; |
1c6fdbd8 KO |
990 | |
991 | if (!bch2_dev_exists(newest, mi, sb->dev_idx)) | |
78c0b75c | 992 | return -BCH_ERR_device_has_been_removed; |
1c6fdbd8 KO |
993 | |
994 | if (fs->block_size != sb->block_size) | |
78c0b75c | 995 | return -BCH_ERR_mismatched_block_size; |
1c6fdbd8 | 996 | |
78c0b75c | 997 | return 0; |
1c6fdbd8 KO |
998 | } |
999 | ||
1000 | /* Device startup/shutdown: */ | |
1001 | ||
1002 | static void bch2_dev_release(struct kobject *kobj) | |
1003 | { | |
1004 | struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj); | |
1005 | ||
1006 | kfree(ca); | |
1007 | } | |
1008 | ||
1009 | static void bch2_dev_free(struct bch_dev *ca) | |
1010 | { | |
1011 | cancel_work_sync(&ca->io_error_work); | |
1012 | ||
1013 | if (ca->kobj.state_in_sysfs && | |
1014 | ca->disk_sb.bdev) | |
1015 | sysfs_remove_link(bdev_kobj(ca->disk_sb.bdev), "bcachefs"); | |
1016 | ||
1017 | if (ca->kobj.state_in_sysfs) | |
1018 | kobject_del(&ca->kobj); | |
1019 | ||
1020 | bch2_free_super(&ca->disk_sb); | |
1021 | bch2_dev_journal_exit(ca); | |
1022 | ||
1023 | free_percpu(ca->io_done); | |
1024 | bioset_exit(&ca->replica_set); | |
1025 | bch2_dev_buckets_free(ca); | |
d1170ce5 | 1026 | free_page((unsigned long) ca->sb_read_scratch); |
1c6fdbd8 KO |
1027 | |
1028 | bch2_time_stats_exit(&ca->io_latency[WRITE]); | |
1029 | bch2_time_stats_exit(&ca->io_latency[READ]); | |
1030 | ||
1031 | percpu_ref_exit(&ca->io_ref); | |
1032 | percpu_ref_exit(&ca->ref); | |
1033 | kobject_put(&ca->kobj); | |
1034 | } | |
1035 | ||
1036 | static void __bch2_dev_offline(struct bch_fs *c, struct bch_dev *ca) | |
1037 | { | |
1038 | ||
1039 | lockdep_assert_held(&c->state_lock); | |
1040 | ||
1041 | if (percpu_ref_is_zero(&ca->io_ref)) | |
1042 | return; | |
1043 | ||
1044 | __bch2_dev_read_only(c, ca); | |
1045 | ||
1046 | reinit_completion(&ca->io_ref_completion); | |
1047 | percpu_ref_kill(&ca->io_ref); | |
1048 | wait_for_completion(&ca->io_ref_completion); | |
1049 | ||
1050 | if (ca->kobj.state_in_sysfs) { | |
1051 | sysfs_remove_link(bdev_kobj(ca->disk_sb.bdev), "bcachefs"); | |
1052 | sysfs_remove_link(&ca->kobj, "block"); | |
1053 | } | |
1054 | ||
1055 | bch2_free_super(&ca->disk_sb); | |
1056 | bch2_dev_journal_exit(ca); | |
1057 | } | |
1058 | ||
1059 | static void bch2_dev_ref_complete(struct percpu_ref *ref) | |
1060 | { | |
1061 | struct bch_dev *ca = container_of(ref, struct bch_dev, ref); | |
1062 | ||
1063 | complete(&ca->ref_completion); | |
1064 | } | |
1065 | ||
1066 | static void bch2_dev_io_ref_complete(struct percpu_ref *ref) | |
1067 | { | |
1068 | struct bch_dev *ca = container_of(ref, struct bch_dev, io_ref); | |
1069 | ||
1070 | complete(&ca->io_ref_completion); | |
1071 | } | |
1072 | ||
1073 | static int bch2_dev_sysfs_online(struct bch_fs *c, struct bch_dev *ca) | |
1074 | { | |
1075 | int ret; | |
1076 | ||
1077 | if (!c->kobj.state_in_sysfs) | |
1078 | return 0; | |
1079 | ||
1080 | if (!ca->kobj.state_in_sysfs) { | |
1081 | ret = kobject_add(&ca->kobj, &c->kobj, | |
1082 | "dev-%u", ca->dev_idx); | |
1083 | if (ret) | |
1084 | return ret; | |
1085 | } | |
1086 | ||
1087 | if (ca->disk_sb.bdev) { | |
1088 | struct kobject *block = bdev_kobj(ca->disk_sb.bdev); | |
1089 | ||
1090 | ret = sysfs_create_link(block, &ca->kobj, "bcachefs"); | |
1091 | if (ret) | |
1092 | return ret; | |
1093 | ||
1094 | ret = sysfs_create_link(&ca->kobj, block, "block"); | |
1095 | if (ret) | |
1096 | return ret; | |
1097 | } | |
1098 | ||
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | static struct bch_dev *__bch2_dev_alloc(struct bch_fs *c, | |
1103 | struct bch_member *member) | |
1104 | { | |
1105 | struct bch_dev *ca; | |
1106 | ||
1107 | ca = kzalloc(sizeof(*ca), GFP_KERNEL); | |
1108 | if (!ca) | |
1109 | return NULL; | |
1110 | ||
1111 | kobject_init(&ca->kobj, &bch2_dev_ktype); | |
1112 | init_completion(&ca->ref_completion); | |
1113 | init_completion(&ca->io_ref_completion); | |
1114 | ||
1115 | init_rwsem(&ca->bucket_lock); | |
1116 | ||
1c6fdbd8 KO |
1117 | INIT_WORK(&ca->io_error_work, bch2_io_error_work); |
1118 | ||
1119 | bch2_time_stats_init(&ca->io_latency[READ]); | |
1120 | bch2_time_stats_init(&ca->io_latency[WRITE]); | |
1121 | ||
1122 | ca->mi = bch2_mi_to_cpu(member); | |
1123 | ca->uuid = member->uuid; | |
1124 | ||
f25d8215 KO |
1125 | ca->nr_btree_reserve = DIV_ROUND_UP(BTREE_NODE_RESERVE, |
1126 | ca->mi.bucket_size / btree_sectors(c)); | |
1127 | ||
1c6fdbd8 KO |
1128 | if (percpu_ref_init(&ca->ref, bch2_dev_ref_complete, |
1129 | 0, GFP_KERNEL) || | |
1130 | percpu_ref_init(&ca->io_ref, bch2_dev_io_ref_complete, | |
1131 | PERCPU_REF_INIT_DEAD, GFP_KERNEL) || | |
d1170ce5 | 1132 | !(ca->sb_read_scratch = (void *) __get_free_page(GFP_KERNEL)) || |
1c6fdbd8 KO |
1133 | bch2_dev_buckets_alloc(c, ca) || |
1134 | bioset_init(&ca->replica_set, 4, | |
1135 | offsetof(struct bch_write_bio, bio), 0) || | |
1136 | !(ca->io_done = alloc_percpu(*ca->io_done))) | |
1137 | goto err; | |
1138 | ||
1139 | return ca; | |
1140 | err: | |
1141 | bch2_dev_free(ca); | |
1142 | return NULL; | |
1143 | } | |
1144 | ||
1145 | static void bch2_dev_attach(struct bch_fs *c, struct bch_dev *ca, | |
1146 | unsigned dev_idx) | |
1147 | { | |
1148 | ca->dev_idx = dev_idx; | |
1149 | __set_bit(ca->dev_idx, ca->self.d); | |
1150 | scnprintf(ca->name, sizeof(ca->name), "dev-%u", dev_idx); | |
1151 | ||
1152 | ca->fs = c; | |
1153 | rcu_assign_pointer(c->devs[ca->dev_idx], ca); | |
1154 | ||
1155 | if (bch2_dev_sysfs_online(c, ca)) | |
1156 | pr_warn("error creating sysfs objects"); | |
1157 | } | |
1158 | ||
1159 | static int bch2_dev_alloc(struct bch_fs *c, unsigned dev_idx) | |
1160 | { | |
1161 | struct bch_member *member = | |
1162 | bch2_sb_get_members(c->disk_sb.sb)->members + dev_idx; | |
1163 | struct bch_dev *ca = NULL; | |
1164 | int ret = 0; | |
1165 | ||
1166 | pr_verbose_init(c->opts, ""); | |
1167 | ||
1168 | if (bch2_fs_init_fault("dev_alloc")) | |
1169 | goto err; | |
1170 | ||
1171 | ca = __bch2_dev_alloc(c, member); | |
1172 | if (!ca) | |
1173 | goto err; | |
1174 | ||
220d2062 KO |
1175 | ca->fs = c; |
1176 | ||
1c6fdbd8 KO |
1177 | bch2_dev_attach(c, ca, dev_idx); |
1178 | out: | |
1179 | pr_verbose_init(c->opts, "ret %i", ret); | |
1180 | return ret; | |
1181 | err: | |
1182 | if (ca) | |
1183 | bch2_dev_free(ca); | |
1184 | ret = -ENOMEM; | |
1185 | goto out; | |
1186 | } | |
1187 | ||
1188 | static int __bch2_dev_attach_bdev(struct bch_dev *ca, struct bch_sb_handle *sb) | |
1189 | { | |
1190 | unsigned ret; | |
1191 | ||
1192 | if (bch2_dev_is_online(ca)) { | |
1193 | bch_err(ca, "already have device online in slot %u", | |
1194 | sb->sb->dev_idx); | |
78c0b75c | 1195 | return -BCH_ERR_device_already_online; |
1c6fdbd8 KO |
1196 | } |
1197 | ||
1198 | if (get_capacity(sb->bdev->bd_disk) < | |
1199 | ca->mi.bucket_size * ca->mi.nbuckets) { | |
1200 | bch_err(ca, "cannot online: device too small"); | |
78c0b75c | 1201 | return -BCH_ERR_device_size_too_small; |
1c6fdbd8 KO |
1202 | } |
1203 | ||
1204 | BUG_ON(!percpu_ref_is_zero(&ca->io_ref)); | |
1205 | ||
1c6fdbd8 KO |
1206 | ret = bch2_dev_journal_init(ca, sb->sb); |
1207 | if (ret) | |
1208 | return ret; | |
1209 | ||
1210 | /* Commit: */ | |
1211 | ca->disk_sb = *sb; | |
1212 | memset(sb, 0, sizeof(*sb)); | |
1213 | ||
eacb2574 KO |
1214 | ca->dev = ca->disk_sb.bdev->bd_dev; |
1215 | ||
1c6fdbd8 KO |
1216 | percpu_ref_reinit(&ca->io_ref); |
1217 | ||
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | static int bch2_dev_attach_bdev(struct bch_fs *c, struct bch_sb_handle *sb) | |
1222 | { | |
1223 | struct bch_dev *ca; | |
1224 | int ret; | |
1225 | ||
1226 | lockdep_assert_held(&c->state_lock); | |
1227 | ||
1228 | if (le64_to_cpu(sb->sb->seq) > | |
1229 | le64_to_cpu(c->disk_sb.sb->seq)) | |
1230 | bch2_sb_to_fs(c, sb->sb); | |
1231 | ||
1232 | BUG_ON(sb->sb->dev_idx >= c->sb.nr_devices || | |
1233 | !c->devs[sb->sb->dev_idx]); | |
1234 | ||
1235 | ca = bch_dev_locked(c, sb->sb->dev_idx); | |
1236 | ||
1237 | ret = __bch2_dev_attach_bdev(ca, sb); | |
1238 | if (ret) | |
1239 | return ret; | |
1240 | ||
1241 | bch2_dev_sysfs_online(c, ca); | |
1242 | ||
1243 | if (c->sb.nr_devices == 1) | |
1244 | snprintf(c->name, sizeof(c->name), "%pg", ca->disk_sb.bdev); | |
1245 | snprintf(ca->name, sizeof(ca->name), "%pg", ca->disk_sb.bdev); | |
1246 | ||
1247 | rebalance_wakeup(c); | |
1248 | return 0; | |
1249 | } | |
1250 | ||
1251 | /* Device management: */ | |
1252 | ||
1253 | /* | |
1254 | * Note: this function is also used by the error paths - when a particular | |
1255 | * device sees an error, we call it to determine whether we can just set the | |
1256 | * device RO, or - if this function returns false - we'll set the whole | |
1257 | * filesystem RO: | |
1258 | * | |
1259 | * XXX: maybe we should be more explicit about whether we're changing state | |
1260 | * because we got an error or what have you? | |
1261 | */ | |
1262 | bool bch2_dev_state_allowed(struct bch_fs *c, struct bch_dev *ca, | |
1263 | enum bch_member_state new_state, int flags) | |
1264 | { | |
1265 | struct bch_devs_mask new_online_devs; | |
1c6fdbd8 KO |
1266 | struct bch_dev *ca2; |
1267 | int i, nr_rw = 0, required; | |
1268 | ||
1269 | lockdep_assert_held(&c->state_lock); | |
1270 | ||
1271 | switch (new_state) { | |
2436cb9f | 1272 | case BCH_MEMBER_STATE_rw: |
1c6fdbd8 | 1273 | return true; |
2436cb9f KO |
1274 | case BCH_MEMBER_STATE_ro: |
1275 | if (ca->mi.state != BCH_MEMBER_STATE_rw) | |
1c6fdbd8 KO |
1276 | return true; |
1277 | ||
1278 | /* do we have enough devices to write to? */ | |
1279 | for_each_member_device(ca2, c, i) | |
1280 | if (ca2 != ca) | |
2436cb9f | 1281 | nr_rw += ca2->mi.state == BCH_MEMBER_STATE_rw; |
1c6fdbd8 KO |
1282 | |
1283 | required = max(!(flags & BCH_FORCE_IF_METADATA_DEGRADED) | |
1284 | ? c->opts.metadata_replicas | |
1285 | : c->opts.metadata_replicas_required, | |
1286 | !(flags & BCH_FORCE_IF_DATA_DEGRADED) | |
1287 | ? c->opts.data_replicas | |
1288 | : c->opts.data_replicas_required); | |
1289 | ||
1290 | return nr_rw >= required; | |
2436cb9f KO |
1291 | case BCH_MEMBER_STATE_failed: |
1292 | case BCH_MEMBER_STATE_spare: | |
1293 | if (ca->mi.state != BCH_MEMBER_STATE_rw && | |
1294 | ca->mi.state != BCH_MEMBER_STATE_ro) | |
1c6fdbd8 KO |
1295 | return true; |
1296 | ||
1297 | /* do we have enough devices to read from? */ | |
1298 | new_online_devs = bch2_online_devs(c); | |
1299 | __clear_bit(ca->dev_idx, new_online_devs.d); | |
1300 | ||
fcb3431b | 1301 | return bch2_have_enough_devs(c, new_online_devs, flags, false); |
1c6fdbd8 KO |
1302 | default: |
1303 | BUG(); | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | static bool bch2_fs_may_start(struct bch_fs *c) | |
1308 | { | |
1c6fdbd8 KO |
1309 | struct bch_sb_field_members *mi; |
1310 | struct bch_dev *ca; | |
fcb3431b KO |
1311 | unsigned i, flags = 0; |
1312 | ||
1313 | if (c->opts.very_degraded) | |
1314 | flags |= BCH_FORCE_IF_DEGRADED|BCH_FORCE_IF_LOST; | |
1c6fdbd8 | 1315 | |
fcb3431b KO |
1316 | if (c->opts.degraded) |
1317 | flags |= BCH_FORCE_IF_DEGRADED; | |
1318 | ||
1319 | if (!c->opts.degraded && | |
1320 | !c->opts.very_degraded) { | |
1c6fdbd8 KO |
1321 | mutex_lock(&c->sb_lock); |
1322 | mi = bch2_sb_get_members(c->disk_sb.sb); | |
1323 | ||
1324 | for (i = 0; i < c->disk_sb.sb->nr_devices; i++) { | |
1325 | if (!bch2_dev_exists(c->disk_sb.sb, mi, i)) | |
1326 | continue; | |
1327 | ||
1328 | ca = bch_dev_locked(c, i); | |
1329 | ||
1330 | if (!bch2_dev_is_online(ca) && | |
2436cb9f KO |
1331 | (ca->mi.state == BCH_MEMBER_STATE_rw || |
1332 | ca->mi.state == BCH_MEMBER_STATE_ro)) { | |
1c6fdbd8 KO |
1333 | mutex_unlock(&c->sb_lock); |
1334 | return false; | |
1335 | } | |
1336 | } | |
1337 | mutex_unlock(&c->sb_lock); | |
1338 | } | |
1339 | ||
fcb3431b | 1340 | return bch2_have_enough_devs(c, bch2_online_devs(c), flags, true); |
1c6fdbd8 KO |
1341 | } |
1342 | ||
1343 | static void __bch2_dev_read_only(struct bch_fs *c, struct bch_dev *ca) | |
1344 | { | |
74ed7e56 KO |
1345 | /* |
1346 | * Device going read only means the copygc reserve get smaller, so we | |
1347 | * don't want that happening while copygc is in progress: | |
1348 | */ | |
1349 | bch2_copygc_stop(c); | |
1350 | ||
1c6fdbd8 KO |
1351 | /* |
1352 | * The allocator thread itself allocates btree nodes, so stop it first: | |
1353 | */ | |
1c6fdbd8 KO |
1354 | bch2_dev_allocator_remove(c, ca); |
1355 | bch2_dev_journal_stop(&c->journal, ca); | |
74ed7e56 KO |
1356 | |
1357 | bch2_copygc_start(c); | |
1c6fdbd8 KO |
1358 | } |
1359 | ||
f25d8215 | 1360 | static void __bch2_dev_read_write(struct bch_fs *c, struct bch_dev *ca) |
1c6fdbd8 KO |
1361 | { |
1362 | lockdep_assert_held(&c->state_lock); | |
1363 | ||
2436cb9f | 1364 | BUG_ON(ca->mi.state != BCH_MEMBER_STATE_rw); |
1c6fdbd8 KO |
1365 | |
1366 | bch2_dev_allocator_add(c, ca); | |
1367 | bch2_recalc_capacity(c); | |
1c6fdbd8 KO |
1368 | } |
1369 | ||
1370 | int __bch2_dev_set_state(struct bch_fs *c, struct bch_dev *ca, | |
1371 | enum bch_member_state new_state, int flags) | |
1372 | { | |
1373 | struct bch_sb_field_members *mi; | |
1374 | int ret = 0; | |
1375 | ||
1376 | if (ca->mi.state == new_state) | |
1377 | return 0; | |
1378 | ||
1379 | if (!bch2_dev_state_allowed(c, ca, new_state, flags)) | |
78c0b75c | 1380 | return -BCH_ERR_device_state_not_allowed; |
1c6fdbd8 | 1381 | |
2436cb9f | 1382 | if (new_state != BCH_MEMBER_STATE_rw) |
1c6fdbd8 KO |
1383 | __bch2_dev_read_only(c, ca); |
1384 | ||
2436cb9f | 1385 | bch_notice(ca, "%s", bch2_member_states[new_state]); |
1c6fdbd8 KO |
1386 | |
1387 | mutex_lock(&c->sb_lock); | |
1388 | mi = bch2_sb_get_members(c->disk_sb.sb); | |
1389 | SET_BCH_MEMBER_STATE(&mi->members[ca->dev_idx], new_state); | |
1390 | bch2_write_super(c); | |
1391 | mutex_unlock(&c->sb_lock); | |
1392 | ||
e2b60560 | 1393 | if (new_state == BCH_MEMBER_STATE_rw) |
f25d8215 | 1394 | __bch2_dev_read_write(c, ca); |
1c6fdbd8 KO |
1395 | |
1396 | rebalance_wakeup(c); | |
1397 | ||
1398 | return ret; | |
1399 | } | |
1400 | ||
1401 | int bch2_dev_set_state(struct bch_fs *c, struct bch_dev *ca, | |
1402 | enum bch_member_state new_state, int flags) | |
1403 | { | |
1404 | int ret; | |
1405 | ||
1ada1606 | 1406 | down_write(&c->state_lock); |
1c6fdbd8 | 1407 | ret = __bch2_dev_set_state(c, ca, new_state, flags); |
1ada1606 | 1408 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1409 | |
1410 | return ret; | |
1411 | } | |
1412 | ||
1413 | /* Device add/removal: */ | |
1414 | ||
c0ebe3e4 | 1415 | static int bch2_dev_remove_alloc(struct bch_fs *c, struct bch_dev *ca) |
5d20ba48 | 1416 | { |
c6b2826c KO |
1417 | struct bpos start = POS(ca->dev_idx, 0); |
1418 | struct bpos end = POS(ca->dev_idx, U64_MAX); | |
5d20ba48 KO |
1419 | int ret; |
1420 | ||
a9c0a4cb KO |
1421 | /* |
1422 | * We clear the LRU and need_discard btrees first so that we don't race | |
1423 | * with bch2_do_invalidates() and bch2_do_discards() | |
1424 | */ | |
1425 | ret = bch2_btree_delete_range(c, BTREE_ID_lru, start, end, | |
1426 | BTREE_TRIGGER_NORUN, NULL) ?: | |
1427 | bch2_btree_delete_range(c, BTREE_ID_need_discard, start, end, | |
c6b2826c KO |
1428 | BTREE_TRIGGER_NORUN, NULL) ?: |
1429 | bch2_btree_delete_range(c, BTREE_ID_freespace, start, end, | |
1430 | BTREE_TRIGGER_NORUN, NULL) ?: | |
a9c0a4cb | 1431 | bch2_btree_delete_range(c, BTREE_ID_alloc, start, end, |
c6b2826c KO |
1432 | BTREE_TRIGGER_NORUN, NULL); |
1433 | if (ret) | |
d4bf5eec | 1434 | bch_err(c, "error removing dev alloc info: %s", bch2_err_str(ret)); |
5d20ba48 | 1435 | |
c6b2826c | 1436 | return ret; |
5d20ba48 KO |
1437 | } |
1438 | ||
1c6fdbd8 KO |
1439 | int bch2_dev_remove(struct bch_fs *c, struct bch_dev *ca, int flags) |
1440 | { | |
1441 | struct bch_sb_field_members *mi; | |
1442 | unsigned dev_idx = ca->dev_idx, data; | |
78c0b75c | 1443 | int ret; |
1c6fdbd8 | 1444 | |
1ada1606 | 1445 | down_write(&c->state_lock); |
1c6fdbd8 | 1446 | |
31ba2cd3 KO |
1447 | /* |
1448 | * We consume a reference to ca->ref, regardless of whether we succeed | |
1449 | * or fail: | |
1450 | */ | |
1451 | percpu_ref_put(&ca->ref); | |
1c6fdbd8 | 1452 | |
2436cb9f | 1453 | if (!bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_failed, flags)) { |
1c6fdbd8 | 1454 | bch_err(ca, "Cannot remove without losing data"); |
78c0b75c | 1455 | ret = -BCH_ERR_device_state_not_allowed; |
1c6fdbd8 KO |
1456 | goto err; |
1457 | } | |
1458 | ||
1459 | __bch2_dev_read_only(c, ca); | |
1460 | ||
1c6fdbd8 KO |
1461 | ret = bch2_dev_data_drop(c, ca->dev_idx, flags); |
1462 | if (ret) { | |
d4bf5eec | 1463 | bch_err(ca, "Remove failed: error dropping data: %s", bch2_err_str(ret)); |
1c6fdbd8 KO |
1464 | goto err; |
1465 | } | |
1466 | ||
a9c0a4cb | 1467 | ret = bch2_dev_remove_alloc(c, ca); |
1c6fdbd8 | 1468 | if (ret) { |
a9c0a4cb | 1469 | bch_err(ca, "Remove failed, error deleting alloc info"); |
1c6fdbd8 KO |
1470 | goto err; |
1471 | } | |
1472 | ||
a9c0a4cb | 1473 | ret = bch2_journal_flush_device_pins(&c->journal, ca->dev_idx); |
1c6fdbd8 | 1474 | if (ret) { |
d4bf5eec | 1475 | bch_err(ca, "Remove failed: error flushing journal: %s", bch2_err_str(ret)); |
1c6fdbd8 KO |
1476 | goto err; |
1477 | } | |
1478 | ||
a9c0a4cb | 1479 | ret = bch2_journal_flush(&c->journal); |
1c6fdbd8 KO |
1480 | if (ret) { |
1481 | bch_err(ca, "Remove failed, journal error"); | |
1482 | goto err; | |
1483 | } | |
1484 | ||
31ba2cd3 KO |
1485 | ret = bch2_replicas_gc2(c); |
1486 | if (ret) { | |
d4bf5eec | 1487 | bch_err(ca, "Remove failed: error from replicas gc: %s", bch2_err_str(ret)); |
31ba2cd3 KO |
1488 | goto err; |
1489 | } | |
1490 | ||
1491 | data = bch2_dev_has_data(c, ca); | |
1492 | if (data) { | |
fa8e94fa | 1493 | struct printbuf data_has = PRINTBUF; |
31ba2cd3 | 1494 | |
401ec4db | 1495 | prt_bitflags(&data_has, bch2_data_types, data); |
fa8e94fa KO |
1496 | bch_err(ca, "Remove failed, still has data (%s)", data_has.buf); |
1497 | printbuf_exit(&data_has); | |
31ba2cd3 KO |
1498 | ret = -EBUSY; |
1499 | goto err; | |
1500 | } | |
1501 | ||
1c6fdbd8 KO |
1502 | __bch2_dev_offline(c, ca); |
1503 | ||
1504 | mutex_lock(&c->sb_lock); | |
1505 | rcu_assign_pointer(c->devs[ca->dev_idx], NULL); | |
1506 | mutex_unlock(&c->sb_lock); | |
1507 | ||
1508 | percpu_ref_kill(&ca->ref); | |
1509 | wait_for_completion(&ca->ref_completion); | |
1510 | ||
1511 | bch2_dev_free(ca); | |
1512 | ||
1513 | /* | |
1514 | * Free this device's slot in the bch_member array - all pointers to | |
1515 | * this device must be gone: | |
1516 | */ | |
1517 | mutex_lock(&c->sb_lock); | |
1518 | mi = bch2_sb_get_members(c->disk_sb.sb); | |
1519 | memset(&mi->members[dev_idx].uuid, 0, sizeof(mi->members[dev_idx].uuid)); | |
1520 | ||
1521 | bch2_write_super(c); | |
1522 | ||
1523 | mutex_unlock(&c->sb_lock); | |
1ada1606 | 1524 | up_write(&c->state_lock); |
180fb49d KO |
1525 | |
1526 | bch2_dev_usage_journal_reserve(c); | |
1c6fdbd8 KO |
1527 | return 0; |
1528 | err: | |
2436cb9f | 1529 | if (ca->mi.state == BCH_MEMBER_STATE_rw && |
d3bb629d | 1530 | !percpu_ref_is_zero(&ca->io_ref)) |
1c6fdbd8 | 1531 | __bch2_dev_read_write(c, ca); |
1ada1606 | 1532 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1533 | return ret; |
1534 | } | |
1535 | ||
1536 | /* Add new device to running filesystem: */ | |
1537 | int bch2_dev_add(struct bch_fs *c, const char *path) | |
1538 | { | |
1539 | struct bch_opts opts = bch2_opts_empty(); | |
1540 | struct bch_sb_handle sb; | |
1c6fdbd8 KO |
1541 | struct bch_dev *ca = NULL; |
1542 | struct bch_sb_field_members *mi; | |
1543 | struct bch_member dev_mi; | |
1544 | unsigned dev_idx, nr_devices, u64s; | |
fa8e94fa | 1545 | struct printbuf errbuf = PRINTBUF; |
02afcb8c | 1546 | struct printbuf label = PRINTBUF; |
1c6fdbd8 KO |
1547 | int ret; |
1548 | ||
1549 | ret = bch2_read_super(path, &opts, &sb); | |
e8536925 | 1550 | if (ret) { |
d4bf5eec | 1551 | bch_err(c, "device add error: error reading super: %s", bch2_err_str(ret)); |
efe68e1d | 1552 | goto err; |
e8536925 | 1553 | } |
1c6fdbd8 KO |
1554 | |
1555 | dev_mi = bch2_sb_get_members(sb.sb)->members[sb.sb->dev_idx]; | |
1556 | ||
02afcb8c KO |
1557 | if (BCH_MEMBER_GROUP(&dev_mi)) { |
1558 | bch2_disk_path_to_text(&label, sb.sb, BCH_MEMBER_GROUP(&dev_mi) - 1); | |
1559 | if (label.allocation_failure) { | |
1560 | ret = -ENOMEM; | |
1561 | goto err; | |
1562 | } | |
1563 | } | |
1564 | ||
78c0b75c KO |
1565 | ret = bch2_dev_may_add(sb.sb, c); |
1566 | if (ret) { | |
1567 | bch_err(c, "device add error: %s", bch2_err_str(ret)); | |
efe68e1d | 1568 | goto err; |
e8536925 | 1569 | } |
1c6fdbd8 KO |
1570 | |
1571 | ca = __bch2_dev_alloc(c, &dev_mi); | |
1572 | if (!ca) { | |
1573 | bch2_free_super(&sb); | |
efe68e1d KO |
1574 | ret = -ENOMEM; |
1575 | goto err; | |
1c6fdbd8 KO |
1576 | } |
1577 | ||
822835ff KO |
1578 | bch2_dev_usage_init(ca); |
1579 | ||
1c6fdbd8 KO |
1580 | ret = __bch2_dev_attach_bdev(ca, &sb); |
1581 | if (ret) { | |
1582 | bch2_dev_free(ca); | |
efe68e1d | 1583 | goto err; |
1c6fdbd8 KO |
1584 | } |
1585 | ||
1c6fdbd8 | 1586 | ret = bch2_dev_journal_alloc(ca); |
e8536925 KO |
1587 | if (ret) { |
1588 | bch_err(c, "device add error: journal alloc failed"); | |
1c6fdbd8 | 1589 | goto err; |
e8536925 | 1590 | } |
1c6fdbd8 | 1591 | |
1ada1606 | 1592 | down_write(&c->state_lock); |
1c6fdbd8 KO |
1593 | mutex_lock(&c->sb_lock); |
1594 | ||
1c6fdbd8 | 1595 | ret = bch2_sb_from_fs(c, ca); |
e8536925 KO |
1596 | if (ret) { |
1597 | bch_err(c, "device add error: new device superblock too small"); | |
1c6fdbd8 | 1598 | goto err_unlock; |
e8536925 | 1599 | } |
1c6fdbd8 KO |
1600 | |
1601 | mi = bch2_sb_get_members(ca->disk_sb.sb); | |
1602 | ||
1603 | if (!bch2_sb_resize_members(&ca->disk_sb, | |
1604 | le32_to_cpu(mi->field.u64s) + | |
1605 | sizeof(dev_mi) / sizeof(u64))) { | |
e8536925 | 1606 | bch_err(c, "device add error: new device superblock too small"); |
098ef98d | 1607 | ret = -BCH_ERR_ENOSPC_sb_members; |
1c6fdbd8 KO |
1608 | goto err_unlock; |
1609 | } | |
1610 | ||
1611 | if (dynamic_fault("bcachefs:add:no_slot")) | |
1612 | goto no_slot; | |
1613 | ||
1614 | mi = bch2_sb_get_members(c->disk_sb.sb); | |
1615 | for (dev_idx = 0; dev_idx < BCH_SB_MEMBERS_MAX; dev_idx++) | |
1616 | if (!bch2_dev_exists(c->disk_sb.sb, mi, dev_idx)) | |
1617 | goto have_slot; | |
1618 | no_slot: | |
e8536925 | 1619 | bch_err(c, "device add error: already have maximum number of devices"); |
098ef98d | 1620 | ret = -BCH_ERR_ENOSPC_sb_members; |
1c6fdbd8 KO |
1621 | goto err_unlock; |
1622 | ||
1623 | have_slot: | |
1624 | nr_devices = max_t(unsigned, dev_idx + 1, c->sb.nr_devices); | |
1625 | u64s = (sizeof(struct bch_sb_field_members) + | |
1626 | sizeof(struct bch_member) * nr_devices) / sizeof(u64); | |
1627 | ||
1c6fdbd8 | 1628 | mi = bch2_sb_resize_members(&c->disk_sb, u64s); |
e8536925 KO |
1629 | if (!mi) { |
1630 | bch_err(c, "device add error: no room in superblock for member info"); | |
098ef98d | 1631 | ret = -BCH_ERR_ENOSPC_sb_members; |
1c6fdbd8 | 1632 | goto err_unlock; |
e8536925 | 1633 | } |
1c6fdbd8 KO |
1634 | |
1635 | /* success: */ | |
1636 | ||
1637 | mi->members[dev_idx] = dev_mi; | |
a420eea6 | 1638 | mi->members[dev_idx].last_mount = cpu_to_le64(ktime_get_real_seconds()); |
1c6fdbd8 KO |
1639 | c->disk_sb.sb->nr_devices = nr_devices; |
1640 | ||
1641 | ca->disk_sb.sb->dev_idx = dev_idx; | |
1642 | bch2_dev_attach(c, ca, dev_idx); | |
1643 | ||
02afcb8c KO |
1644 | if (BCH_MEMBER_GROUP(&dev_mi)) { |
1645 | ret = __bch2_dev_group_set(c, ca, label.buf); | |
1646 | if (ret) { | |
1647 | bch_err(c, "device add error: error setting label"); | |
1648 | goto err_unlock; | |
1649 | } | |
1650 | } | |
1651 | ||
1c6fdbd8 KO |
1652 | bch2_write_super(c); |
1653 | mutex_unlock(&c->sb_lock); | |
1654 | ||
180fb49d KO |
1655 | bch2_dev_usage_journal_reserve(c); |
1656 | ||
d62ab355 | 1657 | ret = bch2_trans_mark_dev_sb(c, ca); |
e8536925 | 1658 | if (ret) { |
d4bf5eec | 1659 | bch_err(c, "device add error: error marking new superblock: %s", bch2_err_str(ret)); |
bfcf840d | 1660 | goto err_late; |
e8536925 | 1661 | } |
8d6b6222 | 1662 | |
c6b2826c KO |
1663 | ret = bch2_fs_freespace_init(c); |
1664 | if (ret) { | |
d4bf5eec | 1665 | bch_err(c, "device add error: error initializing free space: %s", bch2_err_str(ret)); |
c6b2826c KO |
1666 | goto err_late; |
1667 | } | |
1668 | ||
09943313 KO |
1669 | ca->new_fs_bucket_idx = 0; |
1670 | ||
f25d8215 KO |
1671 | if (ca->mi.state == BCH_MEMBER_STATE_rw) |
1672 | __bch2_dev_read_write(c, ca); | |
1c6fdbd8 | 1673 | |
1ada1606 | 1674 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1675 | return 0; |
1676 | ||
1677 | err_unlock: | |
1678 | mutex_unlock(&c->sb_lock); | |
1ada1606 | 1679 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1680 | err: |
1681 | if (ca) | |
1682 | bch2_dev_free(ca); | |
1683 | bch2_free_super(&sb); | |
02afcb8c | 1684 | printbuf_exit(&label); |
fa8e94fa | 1685 | printbuf_exit(&errbuf); |
1c6fdbd8 KO |
1686 | return ret; |
1687 | err_late: | |
bfcf840d | 1688 | up_write(&c->state_lock); |
efe68e1d KO |
1689 | ca = NULL; |
1690 | goto err; | |
1c6fdbd8 KO |
1691 | } |
1692 | ||
1693 | /* Hot add existing device to running filesystem: */ | |
1694 | int bch2_dev_online(struct bch_fs *c, const char *path) | |
1695 | { | |
1696 | struct bch_opts opts = bch2_opts_empty(); | |
1697 | struct bch_sb_handle sb = { NULL }; | |
1698 | struct bch_sb_field_members *mi; | |
1699 | struct bch_dev *ca; | |
1700 | unsigned dev_idx; | |
1c6fdbd8 KO |
1701 | int ret; |
1702 | ||
1ada1606 | 1703 | down_write(&c->state_lock); |
1c6fdbd8 KO |
1704 | |
1705 | ret = bch2_read_super(path, &opts, &sb); | |
1706 | if (ret) { | |
1ada1606 | 1707 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1708 | return ret; |
1709 | } | |
1710 | ||
1711 | dev_idx = sb.sb->dev_idx; | |
1712 | ||
78c0b75c KO |
1713 | ret = bch2_dev_in_fs(c->disk_sb.sb, sb.sb); |
1714 | if (ret) { | |
1715 | bch_err(c, "error bringing %s online: %s", path, bch2_err_str(ret)); | |
1c6fdbd8 | 1716 | goto err; |
e2b60560 | 1717 | } |
1c6fdbd8 | 1718 | |
e2b60560 KO |
1719 | ret = bch2_dev_attach_bdev(c, &sb); |
1720 | if (ret) | |
1c6fdbd8 | 1721 | goto err; |
1c6fdbd8 KO |
1722 | |
1723 | ca = bch_dev_locked(c, dev_idx); | |
bfcf840d | 1724 | |
e2b60560 KO |
1725 | ret = bch2_trans_mark_dev_sb(c, ca); |
1726 | if (ret) { | |
d4bf5eec KO |
1727 | bch_err(c, "error bringing %s online: error from bch2_trans_mark_dev_sb: %s", |
1728 | path, bch2_err_str(ret)); | |
bfcf840d KO |
1729 | goto err; |
1730 | } | |
1731 | ||
f25d8215 KO |
1732 | if (ca->mi.state == BCH_MEMBER_STATE_rw) |
1733 | __bch2_dev_read_write(c, ca); | |
1c6fdbd8 KO |
1734 | |
1735 | mutex_lock(&c->sb_lock); | |
1736 | mi = bch2_sb_get_members(c->disk_sb.sb); | |
1737 | ||
1738 | mi->members[ca->dev_idx].last_mount = | |
a420eea6 | 1739 | cpu_to_le64(ktime_get_real_seconds()); |
1c6fdbd8 KO |
1740 | |
1741 | bch2_write_super(c); | |
1742 | mutex_unlock(&c->sb_lock); | |
1743 | ||
1ada1606 | 1744 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1745 | return 0; |
1746 | err: | |
1ada1606 | 1747 | up_write(&c->state_lock); |
1c6fdbd8 | 1748 | bch2_free_super(&sb); |
78c0b75c | 1749 | return ret; |
1c6fdbd8 KO |
1750 | } |
1751 | ||
1752 | int bch2_dev_offline(struct bch_fs *c, struct bch_dev *ca, int flags) | |
1753 | { | |
1ada1606 | 1754 | down_write(&c->state_lock); |
1c6fdbd8 KO |
1755 | |
1756 | if (!bch2_dev_is_online(ca)) { | |
1757 | bch_err(ca, "Already offline"); | |
1ada1606 | 1758 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1759 | return 0; |
1760 | } | |
1761 | ||
2436cb9f | 1762 | if (!bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_failed, flags)) { |
1c6fdbd8 | 1763 | bch_err(ca, "Cannot offline required disk"); |
1ada1606 | 1764 | up_write(&c->state_lock); |
78c0b75c | 1765 | return -BCH_ERR_device_state_not_allowed; |
1c6fdbd8 KO |
1766 | } |
1767 | ||
1768 | __bch2_dev_offline(c, ca); | |
1769 | ||
1ada1606 | 1770 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1771 | return 0; |
1772 | } | |
1773 | ||
1774 | int bch2_dev_resize(struct bch_fs *c, struct bch_dev *ca, u64 nbuckets) | |
1775 | { | |
1776 | struct bch_member *mi; | |
1777 | int ret = 0; | |
1778 | ||
1ada1606 | 1779 | down_write(&c->state_lock); |
1c6fdbd8 KO |
1780 | |
1781 | if (nbuckets < ca->mi.nbuckets) { | |
1782 | bch_err(ca, "Cannot shrink yet"); | |
1783 | ret = -EINVAL; | |
1784 | goto err; | |
1785 | } | |
1786 | ||
1787 | if (bch2_dev_is_online(ca) && | |
1788 | get_capacity(ca->disk_sb.bdev->bd_disk) < | |
1789 | ca->mi.bucket_size * nbuckets) { | |
1790 | bch_err(ca, "New size larger than device"); | |
78c0b75c | 1791 | ret = -BCH_ERR_device_size_too_small; |
1c6fdbd8 KO |
1792 | goto err; |
1793 | } | |
1794 | ||
1795 | ret = bch2_dev_buckets_resize(c, ca, nbuckets); | |
1796 | if (ret) { | |
d4bf5eec | 1797 | bch_err(ca, "Resize error: %s", bch2_err_str(ret)); |
1c6fdbd8 KO |
1798 | goto err; |
1799 | } | |
1800 | ||
224ec3e6 | 1801 | ret = bch2_trans_mark_dev_sb(c, ca); |
3e3e02e6 | 1802 | if (ret) |
224ec3e6 | 1803 | goto err; |
224ec3e6 | 1804 | |
1c6fdbd8 KO |
1805 | mutex_lock(&c->sb_lock); |
1806 | mi = &bch2_sb_get_members(c->disk_sb.sb)->members[ca->dev_idx]; | |
1807 | mi->nbuckets = cpu_to_le64(nbuckets); | |
1808 | ||
1809 | bch2_write_super(c); | |
1810 | mutex_unlock(&c->sb_lock); | |
1811 | ||
1812 | bch2_recalc_capacity(c); | |
1813 | err: | |
1ada1606 | 1814 | up_write(&c->state_lock); |
1c6fdbd8 KO |
1815 | return ret; |
1816 | } | |
1817 | ||
1818 | /* return with ref on ca->ref: */ | |
bf7e49a4 | 1819 | struct bch_dev *bch2_dev_lookup(struct bch_fs *c, const char *name) |
1c6fdbd8 | 1820 | { |
1c6fdbd8 | 1821 | struct bch_dev *ca; |
1c6fdbd8 | 1822 | unsigned i; |
1c6fdbd8 | 1823 | |
3a402c8d KO |
1824 | rcu_read_lock(); |
1825 | for_each_member_device_rcu(ca, c, i, NULL) | |
bf7e49a4 | 1826 | if (!strcmp(name, ca->name)) |
1c6fdbd8 | 1827 | goto found; |
1c6fdbd8 KO |
1828 | ca = ERR_PTR(-ENOENT); |
1829 | found: | |
3a402c8d KO |
1830 | rcu_read_unlock(); |
1831 | ||
1c6fdbd8 KO |
1832 | return ca; |
1833 | } | |
1834 | ||
1835 | /* Filesystem open: */ | |
1836 | ||
1837 | struct bch_fs *bch2_fs_open(char * const *devices, unsigned nr_devices, | |
1838 | struct bch_opts opts) | |
1839 | { | |
1840 | struct bch_sb_handle *sb = NULL; | |
1841 | struct bch_fs *c = NULL; | |
625104ea | 1842 | struct bch_sb_field_members *mi; |
1c6fdbd8 | 1843 | unsigned i, best_sb = 0; |
fa8e94fa | 1844 | struct printbuf errbuf = PRINTBUF; |
e2b60560 | 1845 | int ret = 0; |
1c6fdbd8 | 1846 | |
efe68e1d KO |
1847 | if (!try_module_get(THIS_MODULE)) |
1848 | return ERR_PTR(-ENODEV); | |
1849 | ||
1c6fdbd8 KO |
1850 | pr_verbose_init(opts, ""); |
1851 | ||
1852 | if (!nr_devices) { | |
efe68e1d KO |
1853 | ret = -EINVAL; |
1854 | goto err; | |
1c6fdbd8 KO |
1855 | } |
1856 | ||
1c6fdbd8 | 1857 | sb = kcalloc(nr_devices, sizeof(*sb), GFP_KERNEL); |
e2b60560 KO |
1858 | if (!sb) { |
1859 | ret = -ENOMEM; | |
1c6fdbd8 | 1860 | goto err; |
e2b60560 | 1861 | } |
1c6fdbd8 KO |
1862 | |
1863 | for (i = 0; i < nr_devices; i++) { | |
1864 | ret = bch2_read_super(devices[i], &opts, &sb[i]); | |
1865 | if (ret) | |
1866 | goto err; | |
1867 | ||
1c6fdbd8 KO |
1868 | } |
1869 | ||
1870 | for (i = 1; i < nr_devices; i++) | |
1871 | if (le64_to_cpu(sb[i].sb->seq) > | |
1872 | le64_to_cpu(sb[best_sb].sb->seq)) | |
1873 | best_sb = i; | |
1874 | ||
625104ea KO |
1875 | mi = bch2_sb_get_members(sb[best_sb].sb); |
1876 | ||
1877 | i = 0; | |
1878 | while (i < nr_devices) { | |
1879 | if (i != best_sb && | |
1880 | !bch2_dev_exists(sb[best_sb].sb, mi, sb[i].sb->dev_idx)) { | |
1881 | pr_info("%pg has been removed, skipping", sb[i].bdev); | |
1882 | bch2_free_super(&sb[i]); | |
1883 | array_remove_item(sb, nr_devices, i); | |
1884 | continue; | |
1885 | } | |
1886 | ||
78c0b75c KO |
1887 | ret = bch2_dev_in_fs(sb[best_sb].sb, sb[i].sb); |
1888 | if (ret) | |
1c6fdbd8 | 1889 | goto err_print; |
625104ea | 1890 | i++; |
1c6fdbd8 KO |
1891 | } |
1892 | ||
1c6fdbd8 | 1893 | c = bch2_fs_alloc(sb[best_sb].sb, opts); |
7be9ab63 CW |
1894 | if (IS_ERR(c)) { |
1895 | ret = PTR_ERR(c); | |
1c6fdbd8 | 1896 | goto err; |
7be9ab63 | 1897 | } |
1c6fdbd8 | 1898 | |
1ada1606 | 1899 | down_write(&c->state_lock); |
e2b60560 KO |
1900 | for (i = 0; i < nr_devices; i++) { |
1901 | ret = bch2_dev_attach_bdev(c, &sb[i]); | |
1902 | if (ret) { | |
1ada1606 | 1903 | up_write(&c->state_lock); |
e2b60560 | 1904 | goto err; |
1c6fdbd8 | 1905 | } |
e2b60560 | 1906 | } |
1ada1606 | 1907 | up_write(&c->state_lock); |
1c6fdbd8 | 1908 | |
78c0b75c KO |
1909 | if (!bch2_fs_may_start(c)) { |
1910 | ret = -BCH_ERR_insufficient_devices_to_start; | |
1c6fdbd8 | 1911 | goto err_print; |
78c0b75c | 1912 | } |
1c6fdbd8 KO |
1913 | |
1914 | if (!c->opts.nostart) { | |
619f5bee KO |
1915 | ret = bch2_fs_start(c); |
1916 | if (ret) | |
1917 | goto err; | |
1c6fdbd8 KO |
1918 | } |
1919 | out: | |
1920 | kfree(sb); | |
fa8e94fa | 1921 | printbuf_exit(&errbuf); |
1c6fdbd8 | 1922 | module_put(THIS_MODULE); |
1c6fdbd8 KO |
1923 | pr_verbose_init(opts, "ret %i", PTR_ERR_OR_ZERO(c)); |
1924 | return c; | |
1925 | err_print: | |
1926 | pr_err("bch_fs_open err opening %s: %s", | |
78c0b75c | 1927 | devices[0], bch2_err_str(ret)); |
1c6fdbd8 | 1928 | err: |
7be9ab63 | 1929 | if (!IS_ERR_OR_NULL(c)) |
1c6fdbd8 | 1930 | bch2_fs_stop(c); |
e2b60560 KO |
1931 | if (sb) |
1932 | for (i = 0; i < nr_devices; i++) | |
1933 | bch2_free_super(&sb[i]); | |
1c6fdbd8 KO |
1934 | c = ERR_PTR(ret); |
1935 | goto out; | |
1936 | } | |
1937 | ||
1c6fdbd8 KO |
1938 | /* Global interfaces/init */ |
1939 | ||
1940 | static void bcachefs_exit(void) | |
1941 | { | |
1942 | bch2_debug_exit(); | |
1943 | bch2_vfs_exit(); | |
1944 | bch2_chardev_exit(); | |
14ba3706 | 1945 | bch2_btree_key_cache_exit(); |
1c6fdbd8 KO |
1946 | if (bcachefs_kset) |
1947 | kset_unregister(bcachefs_kset); | |
1948 | } | |
1949 | ||
1950 | static int __init bcachefs_init(void) | |
1951 | { | |
1952 | bch2_bkey_pack_test(); | |
1c6fdbd8 KO |
1953 | |
1954 | if (!(bcachefs_kset = kset_create_and_add("bcachefs", NULL, fs_kobj)) || | |
14ba3706 | 1955 | bch2_btree_key_cache_init() || |
1c6fdbd8 KO |
1956 | bch2_chardev_init() || |
1957 | bch2_vfs_init() || | |
1958 | bch2_debug_init()) | |
1959 | goto err; | |
1960 | ||
1961 | return 0; | |
1962 | err: | |
1963 | bcachefs_exit(); | |
1964 | return -ENOMEM; | |
1965 | } | |
1966 | ||
1967 | #define BCH_DEBUG_PARAM(name, description) \ | |
1968 | bool bch2_##name; \ | |
1969 | module_param_named(name, bch2_##name, bool, 0644); \ | |
1970 | MODULE_PARM_DESC(name, description); | |
1971 | BCH_DEBUG_PARAMS() | |
1972 | #undef BCH_DEBUG_PARAM | |
1973 | ||
26609b61 | 1974 | unsigned bch2_metadata_version = bcachefs_metadata_version_current; |
1c6fdbd8 KO |
1975 | module_param_named(version, bch2_metadata_version, uint, 0400); |
1976 | ||
1977 | module_exit(bcachefs_exit); | |
1978 | module_init(bcachefs_init); |