1 // SPDX-License-Identifier: GPL-2.0
2
3 #include "bcachefs.h"
4 #include "alloc_background.h"
5 #include "bkey_buf.h"
6 #include "btree_journal_iter.h"
7 #include "btree_node_scan.h"
8 #include "btree_update.h"
9 #include "btree_update_interior.h"
10 #include "btree_io.h"
11 #include "buckets.h"
12 #include "dirent.h"
13 #include "disk_accounting.h"
14 #include "errcode.h"
15 #include "error.h"
16 #include "journal_io.h"
17 #include "journal_reclaim.h"
18 #include "journal_seq_blacklist.h"
19 #include "logged_ops.h"
20 #include "move.h"
21 #include "movinggc.h"
22 #include "namei.h"
23 #include "quota.h"
24 #include "rebalance.h"
25 #include "recovery.h"
26 #include "recovery_passes.h"
27 #include "replicas.h"
28 #include "sb-clean.h"
29 #include "sb-downgrade.h"
30 #include "snapshot.h"
31 #include "super-io.h"
32
33 #include <linux/sort.h>
34 #include <linux/stat.h>
35
bch2_btree_lost_data(struct bch_fs * c,struct printbuf * msg,enum btree_id btree)36 int bch2_btree_lost_data(struct bch_fs *c,
37 struct printbuf *msg,
38 enum btree_id btree)
39 {
40 u64 b = BIT_ULL(btree);
41 int ret = 0;
42
43 mutex_lock(&c->sb_lock);
44 struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
45
46 if (!(c->sb.btrees_lost_data & b)) {
47 prt_printf(msg, "flagging btree ");
48 bch2_btree_id_to_text(msg, btree);
49 prt_printf(msg, " lost data\n");
50
51 ext->btrees_lost_data |= cpu_to_le64(b);
52 }
53
54 /* Once we have runtime self healing for topology errors we won't need this: */
55 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_topology, 0) ?: ret;
56
57 /* Btree node accounting will be off: */
58 __set_bit_le64(BCH_FSCK_ERR_accounting_mismatch, ext->errors_silent);
59 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_allocations, 0) ?: ret;
60
61 #ifdef CONFIG_BCACHEFS_DEBUG
62 /*
63 * These are much more minor, and don't need to be corrected right away,
64 * but in debug mode we want the next fsck run to be clean:
65 */
66 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_lrus, 0) ?: ret;
67 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_backpointers_to_extents, 0) ?: ret;
68 #endif
69
70 switch (btree) {
71 case BTREE_ID_alloc:
72 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_alloc_info, 0) ?: ret;
73
74 __set_bit_le64(BCH_FSCK_ERR_alloc_key_data_type_wrong, ext->errors_silent);
75 __set_bit_le64(BCH_FSCK_ERR_alloc_key_gen_wrong, ext->errors_silent);
76 __set_bit_le64(BCH_FSCK_ERR_alloc_key_dirty_sectors_wrong, ext->errors_silent);
77 __set_bit_le64(BCH_FSCK_ERR_alloc_key_cached_sectors_wrong, ext->errors_silent);
78 __set_bit_le64(BCH_FSCK_ERR_alloc_key_stripe_wrong, ext->errors_silent);
79 __set_bit_le64(BCH_FSCK_ERR_alloc_key_stripe_redundancy_wrong, ext->errors_silent);
80 goto out;
81 case BTREE_ID_backpointers:
82 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_btree_backpointers, 0) ?: ret;
83 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_extents_to_backpointers, 0) ?: ret;
84 goto out;
85 case BTREE_ID_need_discard:
86 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_alloc_info, 0) ?: ret;
87 goto out;
88 case BTREE_ID_freespace:
89 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_alloc_info, 0) ?: ret;
90 goto out;
91 case BTREE_ID_bucket_gens:
92 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_alloc_info, 0) ?: ret;
93 goto out;
94 case BTREE_ID_lru:
95 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_alloc_info, 0) ?: ret;
96 goto out;
97 case BTREE_ID_accounting:
98 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_allocations, 0) ?: ret;
99 goto out;
100 case BTREE_ID_snapshots:
101 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_reconstruct_snapshots, 0) ?: ret;
102 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_topology, 0) ?: ret;
103 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_scan_for_btree_nodes, 0) ?: ret;
104 goto out;
105 default:
106 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_check_topology, 0) ?: ret;
107 ret = __bch2_run_explicit_recovery_pass(c, msg, BCH_RECOVERY_PASS_scan_for_btree_nodes, 0) ?: ret;
108 goto out;
109 }
110 out:
111 bch2_write_super(c);
112 mutex_unlock(&c->sb_lock);
113
114 return ret;
115 }
116
kill_btree(struct bch_fs * c,enum btree_id btree)117 static void kill_btree(struct bch_fs *c, enum btree_id btree)
118 {
119 bch2_btree_id_root(c, btree)->alive = false;
120 bch2_shoot_down_journal_keys(c, btree, 0, BTREE_MAX_DEPTH, POS_MIN, SPOS_MAX);
121 }
122
123 /* for -o reconstruct_alloc: */
bch2_reconstruct_alloc(struct bch_fs * c)124 void bch2_reconstruct_alloc(struct bch_fs *c)
125 {
126 mutex_lock(&c->sb_lock);
127 struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
128
129 __set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_allocations, ext->recovery_passes_required);
130 __set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_alloc_info, ext->recovery_passes_required);
131 __set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_lrus, ext->recovery_passes_required);
132 __set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_extents_to_backpointers, ext->recovery_passes_required);
133 __set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_alloc_to_lru_refs, ext->recovery_passes_required);
134
135 __set_bit_le64(BCH_FSCK_ERR_ptr_to_missing_alloc_key, ext->errors_silent);
136 __set_bit_le64(BCH_FSCK_ERR_ptr_gen_newer_than_bucket_gen, ext->errors_silent);
137 __set_bit_le64(BCH_FSCK_ERR_stale_dirty_ptr, ext->errors_silent);
138
139 __set_bit_le64(BCH_FSCK_ERR_dev_usage_buckets_wrong, ext->errors_silent);
140 __set_bit_le64(BCH_FSCK_ERR_dev_usage_sectors_wrong, ext->errors_silent);
141 __set_bit_le64(BCH_FSCK_ERR_dev_usage_fragmented_wrong, ext->errors_silent);
142
143 __set_bit_le64(BCH_FSCK_ERR_fs_usage_btree_wrong, ext->errors_silent);
144 __set_bit_le64(BCH_FSCK_ERR_fs_usage_cached_wrong, ext->errors_silent);
145 __set_bit_le64(BCH_FSCK_ERR_fs_usage_persistent_reserved_wrong, ext->errors_silent);
146 __set_bit_le64(BCH_FSCK_ERR_fs_usage_replicas_wrong, ext->errors_silent);
147
148 __set_bit_le64(BCH_FSCK_ERR_alloc_key_to_missing_lru_entry, ext->errors_silent);
149
150 __set_bit_le64(BCH_FSCK_ERR_alloc_key_data_type_wrong, ext->errors_silent);
151 __set_bit_le64(BCH_FSCK_ERR_alloc_key_gen_wrong, ext->errors_silent);
152 __set_bit_le64(BCH_FSCK_ERR_alloc_key_dirty_sectors_wrong, ext->errors_silent);
153 __set_bit_le64(BCH_FSCK_ERR_alloc_key_cached_sectors_wrong, ext->errors_silent);
154 __set_bit_le64(BCH_FSCK_ERR_alloc_key_stripe_wrong, ext->errors_silent);
155 __set_bit_le64(BCH_FSCK_ERR_alloc_key_stripe_redundancy_wrong, ext->errors_silent);
156 __set_bit_le64(BCH_FSCK_ERR_need_discard_key_wrong, ext->errors_silent);
157 __set_bit_le64(BCH_FSCK_ERR_freespace_key_wrong, ext->errors_silent);
158 __set_bit_le64(BCH_FSCK_ERR_bucket_gens_key_wrong, ext->errors_silent);
159 __set_bit_le64(BCH_FSCK_ERR_freespace_hole_missing, ext->errors_silent);
160 __set_bit_le64(BCH_FSCK_ERR_ptr_to_missing_backpointer, ext->errors_silent);
161 __set_bit_le64(BCH_FSCK_ERR_lru_entry_bad, ext->errors_silent);
162 __set_bit_le64(BCH_FSCK_ERR_accounting_mismatch, ext->errors_silent);
163 c->sb.compat &= ~(1ULL << BCH_COMPAT_alloc_info);
164
165 c->opts.recovery_passes |= bch2_recovery_passes_from_stable(le64_to_cpu(ext->recovery_passes_required[0]));
166
167 c->disk_sb.sb->features[0] &= ~cpu_to_le64(BIT_ULL(BCH_FEATURE_no_alloc_info));
168
169 bch2_write_super(c);
170 mutex_unlock(&c->sb_lock);
171
172 for (unsigned i = 0; i < btree_id_nr_alive(c); i++)
173 if (btree_id_is_alloc(i))
174 kill_btree(c, i);
175 }
176
177 /*
178 * Btree node pointers have a field to stack a pointer to the in memory btree
179 * node; we need to zero out this field when reading in btree nodes, or when
180 * reading in keys from the journal:
181 */
zero_out_btree_mem_ptr(struct journal_keys * keys)182 static void zero_out_btree_mem_ptr(struct journal_keys *keys)
183 {
184 darray_for_each(*keys, i)
185 if (i->k->k.type == KEY_TYPE_btree_ptr_v2)
186 bkey_i_to_btree_ptr_v2(i->k)->v.mem_ptr = 0;
187 }
188
189 /* journal replay: */
190
replay_now_at(struct journal * j,u64 seq)191 static void replay_now_at(struct journal *j, u64 seq)
192 {
193 BUG_ON(seq < j->replay_journal_seq);
194
195 seq = min(seq, j->replay_journal_seq_end);
196
197 while (j->replay_journal_seq < seq)
198 bch2_journal_pin_put(j, j->replay_journal_seq++);
199 }
200
bch2_journal_replay_accounting_key(struct btree_trans * trans,struct journal_key * k)201 static int bch2_journal_replay_accounting_key(struct btree_trans *trans,
202 struct journal_key *k)
203 {
204 struct btree_iter iter;
205 bch2_trans_node_iter_init(trans, &iter, k->btree_id, k->k->k.p,
206 BTREE_MAX_DEPTH, k->level,
207 BTREE_ITER_intent);
208 int ret = bch2_btree_iter_traverse(trans, &iter);
209 if (ret)
210 goto out;
211
212 struct bkey u;
213 struct bkey_s_c old = bch2_btree_path_peek_slot(btree_iter_path(trans, &iter), &u);
214
215 /* Has this delta already been applied to the btree? */
216 if (bversion_cmp(old.k->bversion, k->k->k.bversion) >= 0) {
217 ret = 0;
218 goto out;
219 }
220
221 struct bkey_i *new = k->k;
222 if (old.k->type == KEY_TYPE_accounting) {
223 new = bch2_bkey_make_mut_noupdate(trans, bkey_i_to_s_c(k->k));
224 ret = PTR_ERR_OR_ZERO(new);
225 if (ret)
226 goto out;
227
228 bch2_accounting_accumulate(bkey_i_to_accounting(new),
229 bkey_s_c_to_accounting(old));
230 }
231
232 trans->journal_res.seq = k->journal_seq;
233
234 ret = bch2_trans_update(trans, &iter, new, BTREE_TRIGGER_norun);
235 out:
236 bch2_trans_iter_exit(trans, &iter);
237 return ret;
238 }
239
bch2_journal_replay_key(struct btree_trans * trans,struct journal_key * k)240 static int bch2_journal_replay_key(struct btree_trans *trans,
241 struct journal_key *k)
242 {
243 struct btree_iter iter;
244 unsigned iter_flags =
245 BTREE_ITER_intent|
246 BTREE_ITER_not_extents;
247 unsigned update_flags = BTREE_TRIGGER_norun;
248 int ret;
249
250 if (k->overwritten)
251 return 0;
252
253 trans->journal_res.seq = k->journal_seq;
254
255 /*
256 * BTREE_UPDATE_key_cache_reclaim disables key cache lookup/update to
257 * keep the key cache coherent with the underlying btree. Nothing
258 * besides the allocator is doing updates yet so we don't need key cache
259 * coherency for non-alloc btrees, and key cache fills for snapshots
260 * btrees use BTREE_ITER_filter_snapshots, which isn't available until
261 * the snapshots recovery pass runs.
262 */
263 if (!k->level && k->btree_id == BTREE_ID_alloc)
264 iter_flags |= BTREE_ITER_cached;
265 else
266 update_flags |= BTREE_UPDATE_key_cache_reclaim;
267
268 bch2_trans_node_iter_init(trans, &iter, k->btree_id, k->k->k.p,
269 BTREE_MAX_DEPTH, k->level,
270 iter_flags);
271 ret = bch2_btree_iter_traverse(trans, &iter);
272 if (ret)
273 goto out;
274
275 struct btree_path *path = btree_iter_path(trans, &iter);
276 if (unlikely(!btree_path_node(path, k->level))) {
277 struct bch_fs *c = trans->c;
278
279 CLASS(printbuf, buf)();
280 prt_str(&buf, "btree=");
281 bch2_btree_id_to_text(&buf, k->btree_id);
282 prt_printf(&buf, " level=%u ", k->level);
283 bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(k->k));
284
285 if (!(c->recovery.passes_complete & (BIT_ULL(BCH_RECOVERY_PASS_scan_for_btree_nodes)|
286 BIT_ULL(BCH_RECOVERY_PASS_check_topology)))) {
287 bch_err(c, "have key in journal replay for btree depth that does not exist, confused\n%s",
288 buf.buf);
289 ret = -EINVAL;
290 }
291
292 if (!k->allocated) {
293 bch_notice(c, "dropping key in journal replay for depth that does not exist because we're recovering from scan\n%s",
294 buf.buf);
295 k->overwritten = true;
296 goto out;
297 }
298
299 bch2_trans_iter_exit(trans, &iter);
300 bch2_trans_node_iter_init(trans, &iter, k->btree_id, k->k->k.p,
301 BTREE_MAX_DEPTH, 0, iter_flags);
302 ret = bch2_btree_iter_traverse(trans, &iter) ?:
303 bch2_btree_increase_depth(trans, iter.path, 0) ?:
304 -BCH_ERR_transaction_restart_nested;
305 goto out;
306 }
307
308 /* Must be checked with btree locked: */
309 if (k->overwritten)
310 goto out;
311
312 if (k->k->k.type == KEY_TYPE_accounting) {
313 struct bkey_i *n = bch2_trans_subbuf_alloc(trans, &trans->accounting, k->k->k.u64s);
314 ret = PTR_ERR_OR_ZERO(n);
315 if (ret)
316 goto out;
317
318 bkey_copy(n, k->k);
319 goto out;
320 }
321
322 ret = bch2_trans_update(trans, &iter, k->k, update_flags);
323 out:
324 bch2_trans_iter_exit(trans, &iter);
325 return ret;
326 }
327
journal_sort_seq_cmp(const void * _l,const void * _r)328 static int journal_sort_seq_cmp(const void *_l, const void *_r)
329 {
330 const struct journal_key *l = *((const struct journal_key **)_l);
331 const struct journal_key *r = *((const struct journal_key **)_r);
332
333 /*
334 * Map 0 to U64_MAX, so that keys with journal_seq === 0 come last
335 *
336 * journal_seq == 0 means that the key comes from early repair, and
337 * should be inserted last so as to avoid overflowing the journal
338 */
339 return cmp_int(l->journal_seq - 1, r->journal_seq - 1);
340 }
341
bch2_journal_replay(struct bch_fs * c)342 int bch2_journal_replay(struct bch_fs *c)
343 {
344 struct journal_keys *keys = &c->journal_keys;
345 DARRAY(struct journal_key *) keys_sorted = { 0 };
346 struct journal *j = &c->journal;
347 u64 start_seq = c->journal_replay_seq_start;
348 u64 end_seq = c->journal_replay_seq_start;
349 struct btree_trans *trans = NULL;
350 bool immediate_flush = false;
351 int ret = 0;
352
353 if (keys->nr) {
354 ret = bch2_journal_log_msg(c, "Starting journal replay (%zu keys in entries %llu-%llu)",
355 keys->nr, start_seq, end_seq);
356 if (ret)
357 goto err;
358 }
359
360 BUG_ON(!atomic_read(&keys->ref));
361
362 move_gap(keys, keys->nr);
363 trans = bch2_trans_get(c);
364
365 /*
366 * Replay accounting keys first: we can't allow the write buffer to
367 * flush accounting keys until we're done
368 */
369 darray_for_each(*keys, k) {
370 if (!(k->k->k.type == KEY_TYPE_accounting && !k->allocated))
371 continue;
372
373 cond_resched();
374
375 ret = commit_do(trans, NULL, NULL,
376 BCH_TRANS_COMMIT_no_enospc|
377 BCH_TRANS_COMMIT_journal_reclaim|
378 BCH_TRANS_COMMIT_skip_accounting_apply|
379 BCH_TRANS_COMMIT_no_journal_res|
380 BCH_WATERMARK_reclaim,
381 bch2_journal_replay_accounting_key(trans, k));
382 if (bch2_fs_fatal_err_on(ret, c, "error replaying accounting; %s", bch2_err_str(ret)))
383 goto err;
384
385 k->overwritten = true;
386 }
387
388 set_bit(BCH_FS_accounting_replay_done, &c->flags);
389
390 /*
391 * First, attempt to replay keys in sorted order. This is more
392 * efficient - better locality of btree access - but some might fail if
393 * that would cause a journal deadlock.
394 */
395 darray_for_each(*keys, k) {
396 cond_resched();
397
398 /*
399 * k->allocated means the key wasn't read in from the journal,
400 * rather it was from early repair code
401 */
402 if (k->allocated)
403 immediate_flush = true;
404
405 /* Skip fastpath if we're low on space in the journal */
406 ret = c->journal.watermark ? -1 :
407 commit_do(trans, NULL, NULL,
408 BCH_TRANS_COMMIT_no_enospc|
409 BCH_TRANS_COMMIT_journal_reclaim|
410 BCH_TRANS_COMMIT_skip_accounting_apply|
411 (!k->allocated ? BCH_TRANS_COMMIT_no_journal_res : 0),
412 bch2_journal_replay_key(trans, k));
413 BUG_ON(!ret && !k->overwritten && k->k->k.type != KEY_TYPE_accounting);
414 if (ret) {
415 ret = darray_push(&keys_sorted, k);
416 if (ret)
417 goto err;
418 }
419 }
420
421 bch2_trans_unlock_long(trans);
422 /*
423 * Now, replay any remaining keys in the order in which they appear in
424 * the journal, unpinning those journal entries as we go:
425 */
426 sort_nonatomic(keys_sorted.data, keys_sorted.nr,
427 sizeof(keys_sorted.data[0]),
428 journal_sort_seq_cmp, NULL);
429
430 darray_for_each(keys_sorted, kp) {
431 cond_resched();
432
433 struct journal_key *k = *kp;
434
435 if (k->journal_seq)
436 replay_now_at(j, k->journal_seq);
437 else
438 replay_now_at(j, j->replay_journal_seq_end);
439
440 ret = commit_do(trans, NULL, NULL,
441 BCH_TRANS_COMMIT_no_enospc|
442 BCH_TRANS_COMMIT_skip_accounting_apply|
443 (!k->allocated
444 ? BCH_TRANS_COMMIT_no_journal_res|BCH_WATERMARK_reclaim
445 : 0),
446 bch2_journal_replay_key(trans, k));
447 if (ret) {
448 struct printbuf buf = PRINTBUF;
449 bch2_btree_id_level_to_text(&buf, k->btree_id, k->level);
450 bch_err_msg(c, ret, "while replaying key at %s:", buf.buf);
451 printbuf_exit(&buf);
452 goto err;
453 }
454
455 BUG_ON(k->btree_id != BTREE_ID_accounting && !k->overwritten);
456 }
457
458 /*
459 * We need to put our btree_trans before calling flush_all_pins(), since
460 * that will use a btree_trans internally
461 */
462 bch2_trans_put(trans);
463 trans = NULL;
464
465 if (!c->opts.retain_recovery_info &&
466 c->recovery.pass_done >= BCH_RECOVERY_PASS_journal_replay)
467 bch2_journal_keys_put_initial(c);
468
469 replay_now_at(j, j->replay_journal_seq_end);
470 j->replay_journal_seq = 0;
471
472 bch2_journal_set_replay_done(j);
473
474 /* if we did any repair, flush it immediately */
475 if (immediate_flush) {
476 bch2_journal_flush_all_pins(&c->journal);
477 ret = bch2_journal_meta(&c->journal);
478 }
479
480 if (keys->nr)
481 bch2_journal_log_msg(c, "journal replay finished");
482 err:
483 if (trans)
484 bch2_trans_put(trans);
485 darray_exit(&keys_sorted);
486 bch_err_fn(c, ret);
487 return ret;
488 }
489
490 /* journal replay early: */
491
journal_replay_entry_early(struct bch_fs * c,struct jset_entry * entry)492 static int journal_replay_entry_early(struct bch_fs *c,
493 struct jset_entry *entry)
494 {
495 int ret = 0;
496
497 switch (entry->type) {
498 case BCH_JSET_ENTRY_btree_root: {
499
500 if (unlikely(!entry->u64s))
501 return 0;
502
503 if (fsck_err_on(entry->btree_id >= BTREE_ID_NR_MAX,
504 c, invalid_btree_id,
505 "invalid btree id %u (max %u)",
506 entry->btree_id, BTREE_ID_NR_MAX))
507 return 0;
508
509 while (entry->btree_id >= c->btree_roots_extra.nr + BTREE_ID_NR) {
510 ret = darray_push(&c->btree_roots_extra, (struct btree_root) { NULL });
511 if (ret)
512 return ret;
513 }
514
515 struct btree_root *r = bch2_btree_id_root(c, entry->btree_id);
516
517 r->level = entry->level;
518 bkey_copy(&r->key, (struct bkey_i *) entry->start);
519 r->error = 0;
520 r->alive = true;
521 break;
522 }
523 case BCH_JSET_ENTRY_usage: {
524 struct jset_entry_usage *u =
525 container_of(entry, struct jset_entry_usage, entry);
526
527 switch (entry->btree_id) {
528 case BCH_FS_USAGE_key_version:
529 atomic64_set(&c->key_version, le64_to_cpu(u->v));
530 break;
531 }
532 break;
533 }
534 case BCH_JSET_ENTRY_blacklist: {
535 struct jset_entry_blacklist *bl_entry =
536 container_of(entry, struct jset_entry_blacklist, entry);
537
538 ret = bch2_journal_seq_blacklist_add(c,
539 le64_to_cpu(bl_entry->seq),
540 le64_to_cpu(bl_entry->seq) + 1);
541 break;
542 }
543 case BCH_JSET_ENTRY_blacklist_v2: {
544 struct jset_entry_blacklist_v2 *bl_entry =
545 container_of(entry, struct jset_entry_blacklist_v2, entry);
546
547 ret = bch2_journal_seq_blacklist_add(c,
548 le64_to_cpu(bl_entry->start),
549 le64_to_cpu(bl_entry->end) + 1);
550 break;
551 }
552 case BCH_JSET_ENTRY_clock: {
553 struct jset_entry_clock *clock =
554 container_of(entry, struct jset_entry_clock, entry);
555
556 atomic64_set(&c->io_clock[clock->rw].now, le64_to_cpu(clock->time));
557 }
558 }
559 fsck_err:
560 return ret;
561 }
562
journal_replay_early(struct bch_fs * c,struct bch_sb_field_clean * clean)563 static int journal_replay_early(struct bch_fs *c,
564 struct bch_sb_field_clean *clean)
565 {
566 if (clean) {
567 for (struct jset_entry *entry = clean->start;
568 entry != vstruct_end(&clean->field);
569 entry = vstruct_next(entry)) {
570 int ret = journal_replay_entry_early(c, entry);
571 if (ret)
572 return ret;
573 }
574 } else {
575 struct genradix_iter iter;
576 struct journal_replay *i, **_i;
577
578 genradix_for_each(&c->journal_entries, iter, _i) {
579 i = *_i;
580
581 if (journal_replay_ignore(i))
582 continue;
583
584 vstruct_for_each(&i->j, entry) {
585 int ret = journal_replay_entry_early(c, entry);
586 if (ret)
587 return ret;
588 }
589 }
590 }
591
592 return 0;
593 }
594
595 /* sb clean section: */
596
read_btree_roots(struct bch_fs * c)597 static int read_btree_roots(struct bch_fs *c)
598 {
599 struct printbuf buf = PRINTBUF;
600 int ret = 0;
601
602 for (unsigned i = 0; i < btree_id_nr_alive(c); i++) {
603 struct btree_root *r = bch2_btree_id_root(c, i);
604
605 if (!r->alive)
606 continue;
607
608 printbuf_reset(&buf);
609 bch2_btree_id_level_to_text(&buf, i, r->level);
610
611 if (mustfix_fsck_err_on((ret = r->error),
612 c, btree_root_bkey_invalid,
613 "invalid btree root %s",
614 buf.buf) ||
615 mustfix_fsck_err_on((ret = r->error = bch2_btree_root_read(c, i, &r->key, r->level)),
616 c, btree_root_read_error,
617 "error reading btree root %s: %s",
618 buf.buf, bch2_err_str(ret))) {
619 if (btree_id_is_alloc(i))
620 r->error = 0;
621 ret = 0;
622 }
623 }
624
625 for (unsigned i = 0; i < BTREE_ID_NR; i++) {
626 struct btree_root *r = bch2_btree_id_root(c, i);
627
628 if (!r->b && !r->error) {
629 r->alive = false;
630 r->level = 0;
631 bch2_btree_root_alloc_fake(c, i, 0);
632 }
633 }
634 fsck_err:
635 printbuf_exit(&buf);
636 return ret;
637 }
638
check_version_upgrade(struct bch_fs * c)639 static bool check_version_upgrade(struct bch_fs *c)
640 {
641 unsigned latest_version = bcachefs_metadata_version_current;
642 unsigned latest_compatible = min(latest_version,
643 bch2_latest_compatible_version(c->sb.version));
644 unsigned old_version = c->sb.version_upgrade_complete ?: c->sb.version;
645 unsigned new_version = 0;
646 bool ret = false;
647
648 if (old_version < bcachefs_metadata_required_upgrade_below) {
649 if (c->opts.version_upgrade == BCH_VERSION_UPGRADE_incompatible ||
650 latest_compatible < bcachefs_metadata_required_upgrade_below)
651 new_version = latest_version;
652 else
653 new_version = latest_compatible;
654 } else {
655 switch (c->opts.version_upgrade) {
656 case BCH_VERSION_UPGRADE_compatible:
657 new_version = latest_compatible;
658 break;
659 case BCH_VERSION_UPGRADE_incompatible:
660 new_version = latest_version;
661 break;
662 case BCH_VERSION_UPGRADE_none:
663 new_version = min(old_version, latest_version);
664 break;
665 }
666 }
667
668 if (new_version > old_version) {
669 struct printbuf buf = PRINTBUF;
670
671 if (old_version < bcachefs_metadata_required_upgrade_below)
672 prt_str(&buf, "Version upgrade required:\n");
673
674 if (old_version != c->sb.version) {
675 prt_str(&buf, "Version upgrade from ");
676 bch2_version_to_text(&buf, c->sb.version_upgrade_complete);
677 prt_str(&buf, " to ");
678 bch2_version_to_text(&buf, c->sb.version);
679 prt_str(&buf, " incomplete\n");
680 }
681
682 prt_printf(&buf, "Doing %s version upgrade from ",
683 BCH_VERSION_MAJOR(old_version) != BCH_VERSION_MAJOR(new_version)
684 ? "incompatible" : "compatible");
685 bch2_version_to_text(&buf, old_version);
686 prt_str(&buf, " to ");
687 bch2_version_to_text(&buf, new_version);
688 prt_newline(&buf);
689
690 struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
691 __le64 passes = ext->recovery_passes_required[0];
692 bch2_sb_set_upgrade(c, old_version, new_version);
693 passes = ext->recovery_passes_required[0] & ~passes;
694
695 if (passes) {
696 prt_str(&buf, " running recovery passes: ");
697 prt_bitflags(&buf, bch2_recovery_passes,
698 bch2_recovery_passes_from_stable(le64_to_cpu(passes)));
699 }
700
701 bch_notice(c, "%s", buf.buf);
702 printbuf_exit(&buf);
703
704 ret = true;
705 }
706
707 if (new_version > c->sb.version_incompat_allowed &&
708 c->opts.version_upgrade == BCH_VERSION_UPGRADE_incompatible) {
709 struct printbuf buf = PRINTBUF;
710
711 prt_str(&buf, "Now allowing incompatible features up to ");
712 bch2_version_to_text(&buf, new_version);
713 prt_str(&buf, ", previously allowed up to ");
714 bch2_version_to_text(&buf, c->sb.version_incompat_allowed);
715 prt_newline(&buf);
716
717 bch_notice(c, "%s", buf.buf);
718 printbuf_exit(&buf);
719
720 ret = true;
721 }
722
723 if (ret)
724 bch2_sb_upgrade(c, new_version,
725 c->opts.version_upgrade == BCH_VERSION_UPGRADE_incompatible);
726
727 return ret;
728 }
729
bch2_fs_recovery(struct bch_fs * c)730 int bch2_fs_recovery(struct bch_fs *c)
731 {
732 struct bch_sb_field_clean *clean = NULL;
733 struct jset *last_journal_entry = NULL;
734 u64 last_seq = 0, blacklist_seq, journal_seq;
735 int ret = 0;
736
737 if (c->sb.clean) {
738 clean = bch2_read_superblock_clean(c);
739 ret = PTR_ERR_OR_ZERO(clean);
740 if (ret)
741 goto err;
742
743 bch_info(c, "recovering from clean shutdown, journal seq %llu",
744 le64_to_cpu(clean->journal_seq));
745 } else {
746 bch_info(c, "recovering from unclean shutdown");
747 }
748
749 if (!(c->sb.features & (1ULL << BCH_FEATURE_new_extent_overwrite))) {
750 bch_err(c, "feature new_extent_overwrite not set, filesystem no longer supported");
751 ret = -EINVAL;
752 goto err;
753 }
754
755 if (!c->sb.clean &&
756 !(c->sb.features & (1ULL << BCH_FEATURE_extents_above_btree_updates))) {
757 bch_err(c, "filesystem needs recovery from older version; run fsck from older bcachefs-tools to fix");
758 ret = -EINVAL;
759 goto err;
760 }
761
762 if (c->opts.norecovery) {
763 c->opts.recovery_pass_last = c->opts.recovery_pass_last
764 ? min(c->opts.recovery_pass_last, BCH_RECOVERY_PASS_snapshots_read)
765 : BCH_RECOVERY_PASS_snapshots_read;
766 c->opts.nochanges = true;
767 }
768
769 if (c->opts.nochanges)
770 c->opts.read_only = true;
771
772 if (c->opts.journal_rewind) {
773 bch_info(c, "rewinding journal, fsck required");
774 c->opts.fsck = true;
775 }
776
777 if (go_rw_in_recovery(c)) {
778 /*
779 * start workqueues/kworkers early - kthread creation checks for
780 * pending signals, which is _very_ annoying
781 */
782 ret = bch2_fs_init_rw(c);
783 if (ret)
784 goto err;
785 }
786
787 mutex_lock(&c->sb_lock);
788 struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
789 bool write_sb = false;
790
791 if (BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb)) {
792 ext->recovery_passes_required[0] |=
793 cpu_to_le64(bch2_recovery_passes_to_stable(BIT_ULL(BCH_RECOVERY_PASS_check_topology)));
794 write_sb = true;
795 }
796
797 u64 sb_passes = bch2_recovery_passes_from_stable(le64_to_cpu(ext->recovery_passes_required[0]));
798 if (sb_passes) {
799 struct printbuf buf = PRINTBUF;
800 prt_str(&buf, "superblock requires following recovery passes to be run:\n ");
801 prt_bitflags(&buf, bch2_recovery_passes, sb_passes);
802 bch_info(c, "%s", buf.buf);
803 printbuf_exit(&buf);
804 }
805
806 if (bch2_check_version_downgrade(c)) {
807 struct printbuf buf = PRINTBUF;
808
809 prt_str(&buf, "Version downgrade required:");
810
811 __le64 passes = ext->recovery_passes_required[0];
812 bch2_sb_set_downgrade(c,
813 BCH_VERSION_MINOR(bcachefs_metadata_version_current),
814 BCH_VERSION_MINOR(c->sb.version));
815 passes = ext->recovery_passes_required[0] & ~passes;
816 if (passes) {
817 prt_str(&buf, "\n running recovery passes: ");
818 prt_bitflags(&buf, bch2_recovery_passes,
819 bch2_recovery_passes_from_stable(le64_to_cpu(passes)));
820 }
821
822 bch_info(c, "%s", buf.buf);
823 printbuf_exit(&buf);
824 write_sb = true;
825 }
826
827 if (check_version_upgrade(c))
828 write_sb = true;
829
830 c->opts.recovery_passes |= bch2_recovery_passes_from_stable(le64_to_cpu(ext->recovery_passes_required[0]));
831
832 if (c->sb.version_upgrade_complete < bcachefs_metadata_version_autofix_errors) {
833 SET_BCH_SB_ERROR_ACTION(c->disk_sb.sb, BCH_ON_ERROR_fix_safe);
834 write_sb = true;
835 }
836
837 if (write_sb)
838 bch2_write_super(c);
839 mutex_unlock(&c->sb_lock);
840
841 if (c->sb.clean)
842 set_bit(BCH_FS_clean_recovery, &c->flags);
843 if (c->opts.fsck)
844 set_bit(BCH_FS_in_fsck, &c->flags);
845 set_bit(BCH_FS_in_recovery, &c->flags);
846
847 ret = bch2_blacklist_table_initialize(c);
848 if (ret) {
849 bch_err(c, "error initializing blacklist table");
850 goto err;
851 }
852
853 bch2_journal_pos_from_member_info_resume(c);
854
855 if (!c->sb.clean || c->opts.retain_recovery_info) {
856 struct genradix_iter iter;
857 struct journal_replay **i;
858
859 bch_verbose(c, "starting journal read");
860 ret = bch2_journal_read(c, &last_seq, &blacklist_seq, &journal_seq);
861 if (ret)
862 goto err;
863
864 /*
865 * note: cmd_list_journal needs the blacklist table fully up to date so
866 * it can asterisk ignored journal entries:
867 */
868 if (c->opts.read_journal_only)
869 goto out;
870
871 genradix_for_each_reverse(&c->journal_entries, iter, i)
872 if (!journal_replay_ignore(*i)) {
873 last_journal_entry = &(*i)->j;
874 break;
875 }
876
877 if (mustfix_fsck_err_on(c->sb.clean &&
878 last_journal_entry &&
879 !journal_entry_empty(last_journal_entry), c,
880 clean_but_journal_not_empty,
881 "filesystem marked clean but journal not empty")) {
882 c->sb.compat &= ~(1ULL << BCH_COMPAT_alloc_info);
883 SET_BCH_SB_CLEAN(c->disk_sb.sb, false);
884 c->sb.clean = false;
885 }
886
887 if (!last_journal_entry) {
888 fsck_err_on(!c->sb.clean, c,
889 dirty_but_no_journal_entries,
890 "no journal entries found");
891 if (clean)
892 goto use_clean;
893
894 genradix_for_each_reverse(&c->journal_entries, iter, i)
895 if (*i) {
896 last_journal_entry = &(*i)->j;
897 (*i)->ignore_blacklisted = false;
898 (*i)->ignore_not_dirty= false;
899 /*
900 * This was probably a NO_FLUSH entry,
901 * so last_seq was garbage - but we know
902 * we're only using a single journal
903 * entry, set it here:
904 */
905 (*i)->j.last_seq = (*i)->j.seq;
906 break;
907 }
908 }
909
910 ret = bch2_journal_keys_sort(c);
911 if (ret)
912 goto err;
913
914 if (c->sb.clean && last_journal_entry) {
915 ret = bch2_verify_superblock_clean(c, &clean,
916 last_journal_entry);
917 if (ret)
918 goto err;
919 }
920 } else {
921 use_clean:
922 if (!clean) {
923 bch_err(c, "no superblock clean section found");
924 ret = bch_err_throw(c, fsck_repair_impossible);
925 goto err;
926
927 }
928 blacklist_seq = journal_seq = le64_to_cpu(clean->journal_seq) + 1;
929 }
930
931 c->journal_replay_seq_start = last_seq;
932 c->journal_replay_seq_end = blacklist_seq - 1;
933
934 zero_out_btree_mem_ptr(&c->journal_keys);
935
936 ret = journal_replay_early(c, clean);
937 if (ret)
938 goto err;
939
940 ret = bch2_fs_resize_on_mount(c);
941 if (ret) {
942 up_write(&c->state_lock);
943 goto err;
944 }
945
946 if (c->sb.features & BIT_ULL(BCH_FEATURE_small_image)) {
947 bch_info(c, "filesystem is an unresized image file, mounting ro");
948 c->opts.read_only = true;
949 }
950
951 if (!c->opts.read_only &&
952 (c->sb.features & BIT_ULL(BCH_FEATURE_no_alloc_info))) {
953 bch_info(c, "mounting a filesystem with no alloc info read-write; will recreate");
954
955 bch2_reconstruct_alloc(c);
956 } else if (c->opts.reconstruct_alloc) {
957 bch2_journal_log_msg(c, "dropping alloc info");
958 bch_info(c, "dropping and reconstructing all alloc info");
959
960 bch2_reconstruct_alloc(c);
961 }
962
963 if (c->sb.features & BIT_ULL(BCH_FEATURE_no_alloc_info)) {
964 /* We can't go RW to fix errors without alloc info */
965 if (c->opts.fix_errors == FSCK_FIX_yes ||
966 c->opts.fix_errors == FSCK_FIX_ask)
967 c->opts.fix_errors = FSCK_FIX_no;
968 if (c->opts.errors == BCH_ON_ERROR_fix_safe)
969 c->opts.errors = BCH_ON_ERROR_continue;
970 }
971
972 /*
973 * After an unclean shutdown, skip then next few journal sequence
974 * numbers as they may have been referenced by btree writes that
975 * happened before their corresponding journal writes - those btree
976 * writes need to be ignored, by skipping and blacklisting the next few
977 * journal sequence numbers:
978 */
979 if (!c->sb.clean)
980 journal_seq += JOURNAL_BUF_NR * 4;
981
982 if (blacklist_seq != journal_seq) {
983 ret = bch2_journal_log_msg(c, "blacklisting entries %llu-%llu",
984 blacklist_seq, journal_seq) ?:
985 bch2_journal_seq_blacklist_add(c,
986 blacklist_seq, journal_seq);
987 if (ret) {
988 bch_err_msg(c, ret, "error creating new journal seq blacklist entry");
989 goto err;
990 }
991 }
992
993 ret = bch2_journal_log_msg(c, "starting journal at entry %llu, replaying %llu-%llu",
994 journal_seq, last_seq, blacklist_seq - 1) ?:
995 bch2_fs_journal_start(&c->journal, last_seq, journal_seq);
996 if (ret)
997 goto err;
998
999 /*
1000 * Skip past versions that might have possibly been used (as nonces),
1001 * but hadn't had their pointers written:
1002 */
1003 if (c->sb.encryption_type && !c->sb.clean)
1004 atomic64_add(1 << 16, &c->key_version);
1005
1006 ret = read_btree_roots(c);
1007 if (ret)
1008 goto err;
1009
1010 set_bit(BCH_FS_btree_running, &c->flags);
1011
1012 ret = bch2_sb_set_upgrade_extra(c);
1013 if (ret)
1014 goto err;
1015
1016 ret = bch2_run_recovery_passes(c, 0);
1017 if (ret)
1018 goto err;
1019
1020 /*
1021 * Normally set by the appropriate recovery pass: when cleared, this
1022 * indicates we're in early recovery and btree updates should be done by
1023 * being applied to the journal replay keys. _Must_ be cleared before
1024 * multithreaded use:
1025 */
1026 set_bit(BCH_FS_may_go_rw, &c->flags);
1027 clear_bit(BCH_FS_in_fsck, &c->flags);
1028
1029 /* in case we don't run journal replay, i.e. norecovery mode */
1030 set_bit(BCH_FS_accounting_replay_done, &c->flags);
1031
1032 bch2_async_btree_node_rewrites_flush(c);
1033
1034 /* fsync if we fixed errors */
1035 if (test_bit(BCH_FS_errors_fixed, &c->flags)) {
1036 bch2_journal_flush_all_pins(&c->journal);
1037 bch2_journal_meta(&c->journal);
1038 }
1039
1040 /* If we fixed errors, verify that fs is actually clean now: */
1041 if (IS_ENABLED(CONFIG_BCACHEFS_DEBUG) &&
1042 test_bit(BCH_FS_errors_fixed, &c->flags) &&
1043 !test_bit(BCH_FS_errors_not_fixed, &c->flags) &&
1044 !test_bit(BCH_FS_error, &c->flags)) {
1045 bch2_flush_fsck_errs(c);
1046
1047 bch_info(c, "Fixed errors, running fsck a second time to verify fs is clean");
1048 clear_bit(BCH_FS_errors_fixed, &c->flags);
1049
1050 ret = bch2_run_recovery_passes(c,
1051 BCH_RECOVERY_PASS_check_alloc_info);
1052 if (ret)
1053 goto err;
1054
1055 if (test_bit(BCH_FS_errors_fixed, &c->flags) ||
1056 test_bit(BCH_FS_errors_not_fixed, &c->flags)) {
1057 bch_err(c, "Second fsck run was not clean");
1058 set_bit(BCH_FS_errors_not_fixed, &c->flags);
1059 }
1060
1061 set_bit(BCH_FS_errors_fixed, &c->flags);
1062 }
1063
1064 if (enabled_qtypes(c)) {
1065 bch_verbose(c, "reading quotas");
1066 ret = bch2_fs_quota_read(c);
1067 if (ret)
1068 goto err;
1069 bch_verbose(c, "quotas done");
1070 }
1071
1072 mutex_lock(&c->sb_lock);
1073 ext = bch2_sb_field_get(c->disk_sb.sb, ext);
1074 write_sb = false;
1075
1076 if (BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb) != le16_to_cpu(c->disk_sb.sb->version)) {
1077 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb, le16_to_cpu(c->disk_sb.sb->version));
1078 write_sb = true;
1079 }
1080
1081 if (!test_bit(BCH_FS_error, &c->flags) &&
1082 !(c->disk_sb.sb->compat[0] & cpu_to_le64(1ULL << BCH_COMPAT_alloc_info))) {
1083 c->disk_sb.sb->compat[0] |= cpu_to_le64(1ULL << BCH_COMPAT_alloc_info);
1084 write_sb = true;
1085 }
1086
1087 if (!test_bit(BCH_FS_error, &c->flags) &&
1088 !bch2_is_zero(ext->errors_silent, sizeof(ext->errors_silent))) {
1089 memset(ext->errors_silent, 0, sizeof(ext->errors_silent));
1090 write_sb = true;
1091 }
1092
1093 if (c->opts.fsck &&
1094 !test_bit(BCH_FS_error, &c->flags) &&
1095 c->recovery.pass_done == BCH_RECOVERY_PASS_NR - 1 &&
1096 ext->btrees_lost_data) {
1097 ext->btrees_lost_data = 0;
1098 write_sb = true;
1099 }
1100
1101 if (c->opts.fsck &&
1102 !test_bit(BCH_FS_error, &c->flags) &&
1103 !test_bit(BCH_FS_errors_not_fixed, &c->flags)) {
1104 SET_BCH_SB_HAS_ERRORS(c->disk_sb.sb, 0);
1105 SET_BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb, 0);
1106 write_sb = true;
1107 }
1108
1109 if (bch2_blacklist_entries_gc(c))
1110 write_sb = true;
1111
1112 if (write_sb)
1113 bch2_write_super(c);
1114 mutex_unlock(&c->sb_lock);
1115
1116 if (!(c->sb.compat & (1ULL << BCH_COMPAT_extents_above_btree_updates_done)) ||
1117 c->sb.version_min < bcachefs_metadata_version_btree_ptr_sectors_written) {
1118 struct bch_move_stats stats;
1119
1120 bch2_move_stats_init(&stats, "recovery");
1121
1122 struct printbuf buf = PRINTBUF;
1123 bch2_version_to_text(&buf, c->sb.version_min);
1124 bch_info(c, "scanning for old btree nodes: min_version %s", buf.buf);
1125 printbuf_exit(&buf);
1126
1127 ret = bch2_fs_read_write_early(c) ?:
1128 bch2_scan_old_btree_nodes(c, &stats);
1129 if (ret)
1130 goto err;
1131 bch_info(c, "scanning for old btree nodes done");
1132 }
1133
1134 ret = 0;
1135 out:
1136 bch2_flush_fsck_errs(c);
1137
1138 if (!ret &&
1139 test_bit(BCH_FS_need_delete_dead_snapshots, &c->flags) &&
1140 !c->opts.nochanges) {
1141 bch2_fs_read_write_early(c);
1142 bch2_delete_dead_snapshots_async(c);
1143 }
1144
1145 bch_err_fn(c, ret);
1146 final_out:
1147 if (!IS_ERR(clean))
1148 kfree(clean);
1149 return ret;
1150 err:
1151 fsck_err:
1152 {
1153 struct printbuf buf = PRINTBUF;
1154 bch2_log_msg_start(c, &buf);
1155
1156 prt_printf(&buf, "error in recovery: %s\n", bch2_err_str(ret));
1157 bch2_fs_emergency_read_only2(c, &buf);
1158
1159 bch2_print_str(c, KERN_ERR, buf.buf);
1160 printbuf_exit(&buf);
1161 }
1162 goto final_out;
1163 }
1164
bch2_fs_initialize(struct bch_fs * c)1165 int bch2_fs_initialize(struct bch_fs *c)
1166 {
1167 struct bch_inode_unpacked root_inode, lostfound_inode;
1168 struct bkey_inode_buf packed_inode;
1169 struct qstr lostfound = QSTR("lost+found");
1170 struct bch_member *m;
1171 int ret;
1172
1173 bch_notice(c, "initializing new filesystem");
1174 set_bit(BCH_FS_new_fs, &c->flags);
1175
1176 mutex_lock(&c->sb_lock);
1177 c->disk_sb.sb->compat[0] |= cpu_to_le64(1ULL << BCH_COMPAT_extents_above_btree_updates_done);
1178 c->disk_sb.sb->compat[0] |= cpu_to_le64(1ULL << BCH_COMPAT_bformat_overflow_done);
1179
1180 bch2_check_version_downgrade(c);
1181
1182 if (c->opts.version_upgrade != BCH_VERSION_UPGRADE_none) {
1183 bch2_sb_upgrade(c, bcachefs_metadata_version_current, false);
1184 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb, bcachefs_metadata_version_current);
1185 bch2_write_super(c);
1186 }
1187
1188 for_each_member_device(c, ca) {
1189 m = bch2_members_v2_get_mut(c->disk_sb.sb, ca->dev_idx);
1190 SET_BCH_MEMBER_FREESPACE_INITIALIZED(m, false);
1191 ca->mi = bch2_mi_to_cpu(m);
1192 }
1193
1194 bch2_write_super(c);
1195 mutex_unlock(&c->sb_lock);
1196
1197 set_bit(BCH_FS_btree_running, &c->flags);
1198 set_bit(BCH_FS_may_go_rw, &c->flags);
1199
1200 for (unsigned i = 0; i < BTREE_ID_NR; i++)
1201 bch2_btree_root_alloc_fake(c, i, 0);
1202
1203 ret = bch2_fs_journal_alloc(c);
1204 if (ret)
1205 goto err;
1206
1207 /*
1208 * journal_res_get() will crash if called before this has
1209 * set up the journal.pin FIFO and journal.cur pointer:
1210 */
1211 ret = bch2_fs_journal_start(&c->journal, 1, 1);
1212 if (ret)
1213 goto err;
1214
1215 ret = bch2_fs_read_write_early(c);
1216 if (ret)
1217 goto err;
1218
1219 set_bit(BCH_FS_accounting_replay_done, &c->flags);
1220 bch2_journal_set_replay_done(&c->journal);
1221
1222 for_each_member_device(c, ca) {
1223 ret = bch2_dev_usage_init(ca, false);
1224 if (ret) {
1225 bch2_dev_put(ca);
1226 goto err;
1227 }
1228 }
1229
1230 /*
1231 * Write out the superblock and journal buckets, now that we can do
1232 * btree updates
1233 */
1234 bch_verbose(c, "marking superblocks");
1235 ret = bch2_trans_mark_dev_sbs(c);
1236 bch_err_msg(c, ret, "marking superblocks");
1237 if (ret)
1238 goto err;
1239
1240 ret = bch2_fs_freespace_init(c);
1241 if (ret)
1242 goto err;
1243
1244 ret = bch2_initialize_subvolumes(c);
1245 if (ret)
1246 goto err;
1247
1248 bch_verbose(c, "reading snapshots table");
1249 ret = bch2_snapshots_read(c);
1250 if (ret)
1251 goto err;
1252 bch_verbose(c, "reading snapshots done");
1253
1254 bch2_inode_init(c, &root_inode, 0, 0, S_IFDIR|0755, 0, NULL);
1255 root_inode.bi_inum = BCACHEFS_ROOT_INO;
1256 root_inode.bi_subvol = BCACHEFS_ROOT_SUBVOL;
1257 bch2_inode_pack(&packed_inode, &root_inode);
1258 packed_inode.inode.k.p.snapshot = U32_MAX;
1259
1260 ret = bch2_btree_insert(c, BTREE_ID_inodes, &packed_inode.inode.k_i, NULL, 0, 0);
1261 bch_err_msg(c, ret, "creating root directory");
1262 if (ret)
1263 goto err;
1264
1265 bch2_inode_init_early(c, &lostfound_inode);
1266
1267 ret = bch2_trans_commit_do(c, NULL, NULL, 0,
1268 bch2_create_trans(trans,
1269 BCACHEFS_ROOT_SUBVOL_INUM,
1270 &root_inode, &lostfound_inode,
1271 &lostfound,
1272 0, 0, S_IFDIR|0700, 0,
1273 NULL, NULL, (subvol_inum) { 0 }, 0));
1274 bch_err_msg(c, ret, "creating lost+found");
1275 if (ret)
1276 goto err;
1277
1278 c->recovery.pass_done = BCH_RECOVERY_PASS_NR - 1;
1279
1280 bch2_copygc_wakeup(c);
1281 bch2_rebalance_wakeup(c);
1282
1283 if (enabled_qtypes(c)) {
1284 ret = bch2_fs_quota_read(c);
1285 if (ret)
1286 goto err;
1287 }
1288
1289 ret = bch2_journal_flush(&c->journal);
1290 bch_err_msg(c, ret, "writing first journal entry");
1291 if (ret)
1292 goto err;
1293
1294 mutex_lock(&c->sb_lock);
1295 SET_BCH_SB_INITIALIZED(c->disk_sb.sb, true);
1296 SET_BCH_SB_CLEAN(c->disk_sb.sb, false);
1297
1298 bch2_write_super(c);
1299 mutex_unlock(&c->sb_lock);
1300
1301 c->recovery.curr_pass = BCH_RECOVERY_PASS_NR;
1302 return 0;
1303 err:
1304 bch_err_fn(c, ret);
1305 return ret;
1306 }
1307