1 // SPDX-License-Identifier: GPL-2.0
4 #include "alloc_background.h"
6 #include "btree_update.h"
7 #include "btree_update_interior.h"
13 #include "fs-common.h"
15 #include "journal_io.h"
16 #include "journal_reclaim.h"
17 #include "journal_seq_blacklist.h"
23 #include <linux/sort.h>
24 #include <linux/stat.h>
26 #define QSTR(n) { { { .len = strlen(n) } }, .name = n }
28 /* iterate over keys read from the journal: */
30 static struct journal_key *journal_key_search(struct journal_keys *journal_keys,
31 enum btree_id id, unsigned level,
34 size_t l = 0, r = journal_keys->nr, m;
37 m = l + ((r - l) >> 1);
38 if ((cmp_int(id, journal_keys->d[m].btree_id) ?:
39 cmp_int(level, journal_keys->d[m].level) ?:
40 bkey_cmp(pos, journal_keys->d[m].k->k.p)) > 0)
46 BUG_ON(l < journal_keys->nr &&
47 (cmp_int(id, journal_keys->d[l].btree_id) ?:
48 cmp_int(level, journal_keys->d[l].level) ?:
49 bkey_cmp(pos, journal_keys->d[l].k->k.p)) > 0);
52 (cmp_int(id, journal_keys->d[l - 1].btree_id) ?:
53 cmp_int(level, journal_keys->d[l - 1].level) ?:
54 bkey_cmp(pos, journal_keys->d[l - 1].k->k.p)) <= 0);
56 return l < journal_keys->nr ? journal_keys->d + l : NULL;
59 static struct bkey_i *bch2_journal_iter_peek(struct journal_iter *iter)
62 iter->k < iter->keys->d + iter->keys->nr &&
63 iter->k->btree_id == iter->btree_id &&
64 iter->k->level == iter->level)
71 static void bch2_journal_iter_advance(struct journal_iter *iter)
77 static void bch2_journal_iter_init(struct journal_iter *iter,
78 struct journal_keys *journal_keys,
79 enum btree_id id, unsigned level,
84 iter->keys = journal_keys;
85 iter->k = journal_key_search(journal_keys, id, level, pos);
88 static struct bkey_s_c bch2_journal_iter_peek_btree(struct btree_and_journal_iter *iter)
91 ? bch2_btree_iter_peek(iter->btree)
92 : bch2_btree_node_iter_peek_unpack(&iter->node_iter,
93 iter->b, &iter->unpacked);
96 static void bch2_journal_iter_advance_btree(struct btree_and_journal_iter *iter)
99 bch2_btree_iter_next(iter->btree);
101 bch2_btree_node_iter_advance(&iter->node_iter, iter->b);
104 void bch2_btree_and_journal_iter_advance(struct btree_and_journal_iter *iter)
106 switch (iter->last) {
110 bch2_journal_iter_advance_btree(iter);
113 bch2_journal_iter_advance(&iter->journal);
120 struct bkey_s_c bch2_btree_and_journal_iter_peek(struct btree_and_journal_iter *iter)
125 struct bkey_s_c btree_k =
126 bch2_journal_iter_peek_btree(iter);
127 struct bkey_s_c journal_k =
128 bkey_i_to_s_c(bch2_journal_iter_peek(&iter->journal));
130 if (btree_k.k && journal_k.k) {
131 int cmp = bkey_cmp(btree_k.k->p, journal_k.k->p);
134 bch2_journal_iter_advance_btree(iter);
136 iter->last = cmp < 0 ? btree : journal;
137 } else if (btree_k.k) {
139 } else if (journal_k.k) {
140 iter->last = journal;
143 return bkey_s_c_null;
146 ret = iter->last == journal ? journal_k : btree_k;
149 bkey_cmp(ret.k->p, iter->b->data->max_key) > 0) {
150 iter->journal.k = NULL;
152 return bkey_s_c_null;
155 if (!bkey_deleted(ret.k))
158 bch2_btree_and_journal_iter_advance(iter);
164 struct bkey_s_c bch2_btree_and_journal_iter_next(struct btree_and_journal_iter *iter)
166 bch2_btree_and_journal_iter_advance(iter);
168 return bch2_btree_and_journal_iter_peek(iter);
171 void bch2_btree_and_journal_iter_init(struct btree_and_journal_iter *iter,
172 struct btree_trans *trans,
173 struct journal_keys *journal_keys,
174 enum btree_id id, struct bpos pos)
176 memset(iter, 0, sizeof(*iter));
178 iter->btree = bch2_trans_get_iter(trans, id, pos, 0);
179 bch2_journal_iter_init(&iter->journal, journal_keys, id, 0, pos);
182 void bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *iter,
183 struct journal_keys *journal_keys,
186 struct bpos start = b->data->min_key;
188 if (btree_node_type_is_extents(b->c.btree_id))
189 start = bkey_successor(start);
191 memset(iter, 0, sizeof(*iter));
194 bch2_btree_node_iter_init_from_start(&iter->node_iter, iter->b);
195 bch2_journal_iter_init(&iter->journal, journal_keys,
196 b->c.btree_id, b->c.level, start);
199 /* sort and dedup all keys in the journal: */
201 void bch2_journal_entries_free(struct list_head *list)
204 while (!list_empty(list)) {
205 struct journal_replay *i =
206 list_first_entry(list, struct journal_replay, list);
208 kvpfree(i, offsetof(struct journal_replay, j) +
209 vstruct_bytes(&i->j));
214 * When keys compare equal, oldest compares first:
216 static int journal_sort_key_cmp(const void *_l, const void *_r)
218 const struct journal_key *l = _l;
219 const struct journal_key *r = _r;
221 return cmp_int(l->btree_id, r->btree_id) ?:
222 cmp_int(l->level, r->level) ?:
223 bkey_cmp(l->k->k.p, r->k->k.p) ?:
224 cmp_int(l->journal_seq, r->journal_seq) ?:
225 cmp_int(l->journal_offset, r->journal_offset);
228 static int journal_sort_seq_cmp(const void *_l, const void *_r)
230 const struct journal_key *l = _l;
231 const struct journal_key *r = _r;
233 return cmp_int(r->level, l->level) ?:
234 cmp_int(l->journal_seq, r->journal_seq) ?:
235 cmp_int(l->btree_id, r->btree_id) ?:
236 bkey_cmp(l->k->k.p, r->k->k.p);
239 void bch2_journal_keys_free(struct journal_keys *keys)
246 static struct journal_keys journal_keys_sort(struct list_head *journal_entries)
248 struct journal_replay *p;
249 struct jset_entry *entry;
250 struct bkey_i *k, *_n;
251 struct journal_keys keys = { NULL };
252 struct journal_key *src, *dst;
255 list_for_each_entry(p, journal_entries, list)
256 for_each_jset_key(k, _n, entry, &p->j)
259 keys.journal_seq_base =
260 le64_to_cpu(list_first_entry(journal_entries,
261 struct journal_replay,
264 keys.d = kvmalloc(sizeof(keys.d[0]) * nr_keys, GFP_KERNEL);
268 list_for_each_entry(p, journal_entries, list)
269 for_each_jset_key(k, _n, entry, &p->j)
270 keys.d[keys.nr++] = (struct journal_key) {
271 .btree_id = entry->btree_id,
272 .level = entry->level,
274 .journal_seq = le64_to_cpu(p->j.seq) -
275 keys.journal_seq_base,
276 .journal_offset = k->_data - p->j._data,
279 sort(keys.d, keys.nr, sizeof(keys.d[0]), journal_sort_key_cmp, NULL);
282 while (src < keys.d + keys.nr) {
283 while (src + 1 < keys.d + keys.nr &&
284 src[0].btree_id == src[1].btree_id &&
285 src[0].level == src[1].level &&
286 !bkey_cmp(src[0].k->k.p, src[1].k->k.p))
292 keys.nr = dst - keys.d;
297 /* journal replay: */
299 static void replay_now_at(struct journal *j, u64 seq)
301 BUG_ON(seq < j->replay_journal_seq);
302 BUG_ON(seq > j->replay_journal_seq_end);
304 while (j->replay_journal_seq < seq)
305 bch2_journal_pin_put(j, j->replay_journal_seq++);
308 static int bch2_extent_replay_key(struct bch_fs *c, enum btree_id btree_id,
311 struct btree_trans trans;
312 struct btree_iter *iter, *split_iter;
314 * We might cause compressed extents to be split, so we need to pass in
315 * a disk_reservation:
317 struct disk_reservation disk_res =
318 bch2_disk_reservation_init(c, 0);
319 struct bkey_i *split;
320 struct bpos atomic_end;
322 * Some extents aren't equivalent - w.r.t. what the triggers do
323 * - if they're split:
325 bool remark_if_split = bch2_bkey_sectors_compressed(bkey_i_to_s_c(k)) ||
326 k->k.type == KEY_TYPE_reflink_p;
330 bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
332 bch2_trans_begin(&trans);
334 iter = bch2_trans_get_iter(&trans, btree_id,
335 bkey_start_pos(&k->k),
339 ret = bch2_btree_iter_traverse(iter);
343 atomic_end = bpos_min(k->k.p, iter->l[0].b->key.k.p);
345 split = bch2_trans_kmalloc(&trans, bkey_bytes(&k->k));
346 ret = PTR_ERR_OR_ZERO(split);
352 bkey_cmp(atomic_end, k->k.p) < 0) {
353 ret = bch2_disk_reservation_add(c, &disk_res,
355 bch2_bkey_nr_ptrs_allocated(bkey_i_to_s_c(k)),
356 BCH_DISK_RESERVATION_NOFAIL);
363 bch2_cut_front(iter->pos, split);
364 bch2_cut_back(atomic_end, split);
366 split_iter = bch2_trans_copy_iter(&trans, iter);
367 ret = PTR_ERR_OR_ZERO(split_iter);
372 * It's important that we don't go through the
373 * extent_handle_overwrites() and extent_update_to_keys() path
374 * here: journal replay is supposed to treat extents like
377 __bch2_btree_iter_set_pos(split_iter, split->k.p, false);
378 bch2_trans_update(&trans, split_iter, split, !remark
379 ? BTREE_TRIGGER_NORUN
380 : BTREE_TRIGGER_NOOVERWRITES);
382 bch2_btree_iter_set_pos(iter, split->k.p);
383 } while (bkey_cmp(iter->pos, k->k.p) < 0);
386 ret = bch2_trans_mark_key(&trans, bkey_i_to_s_c(k),
387 0, -((s64) k->k.size),
388 BTREE_TRIGGER_OVERWRITE);
393 ret = bch2_trans_commit(&trans, &disk_res, NULL,
395 BTREE_INSERT_LAZY_RW|
396 BTREE_INSERT_JOURNAL_REPLAY);
401 bch2_disk_reservation_put(c, &disk_res);
403 return bch2_trans_exit(&trans) ?: ret;
406 static int __bch2_journal_replay_key(struct btree_trans *trans,
407 enum btree_id id, unsigned level,
410 struct btree_iter *iter;
413 iter = bch2_trans_get_node_iter(trans, id, k->k.p,
414 BTREE_MAX_DEPTH, level,
417 return PTR_ERR(iter);
420 * iter->flags & BTREE_ITER_IS_EXTENTS triggers the update path to run
421 * extent_handle_overwrites() and extent_update_to_keys() - but we don't
422 * want that here, journal replay is supposed to treat extents like
425 __bch2_btree_iter_set_pos(iter, k->k.p, false);
427 ret = bch2_btree_iter_traverse(iter) ?:
428 bch2_trans_update(trans, iter, k, BTREE_TRIGGER_NORUN);
429 bch2_trans_iter_put(trans, iter);
433 static int bch2_journal_replay_key(struct bch_fs *c, enum btree_id id,
434 unsigned level, struct bkey_i *k)
436 return bch2_trans_do(c, NULL, NULL,
438 BTREE_INSERT_LAZY_RW|
439 BTREE_INSERT_JOURNAL_REPLAY,
440 __bch2_journal_replay_key(&trans, id, level, k));
443 static int bch2_journal_replay(struct bch_fs *c,
444 struct journal_keys keys)
446 struct journal *j = &c->journal;
447 struct journal_key *i;
450 sort(keys.d, keys.nr, sizeof(keys.d[0]), journal_sort_seq_cmp, NULL);
453 replay_now_at(j, keys.journal_seq_base);
455 for_each_journal_key(keys, i) {
457 replay_now_at(j, keys.journal_seq_base + i->journal_seq);
460 ret = bch2_journal_replay_key(c, i->btree_id, i->level, i->k);
461 if (i->btree_id == BTREE_ID_ALLOC)
462 ret = bch2_alloc_replay_key(c, i->k);
463 else if (i->k->k.size)
464 ret = bch2_extent_replay_key(c, i->btree_id, i->k);
466 ret = bch2_journal_replay_key(c, i->btree_id, i->level, i->k);
469 bch_err(c, "journal replay: error %d while replaying key",
477 replay_now_at(j, j->replay_journal_seq_end);
478 j->replay_journal_seq = 0;
480 bch2_journal_set_replay_done(j);
481 bch2_journal_flush_all_pins(j);
482 return bch2_journal_error(j);
485 static bool journal_empty(struct list_head *journal)
487 return list_empty(journal) ||
488 journal_entry_empty(&list_last_entry(journal,
489 struct journal_replay, list)->j);
493 verify_journal_entries_not_blacklisted_or_missing(struct bch_fs *c,
494 struct list_head *journal)
496 struct journal_replay *i =
497 list_last_entry(journal, struct journal_replay, list);
498 u64 start_seq = le64_to_cpu(i->j.last_seq);
499 u64 end_seq = le64_to_cpu(i->j.seq);
503 list_for_each_entry(i, journal, list) {
504 fsck_err_on(seq != le64_to_cpu(i->j.seq), c,
505 "journal entries %llu-%llu missing! (replaying %llu-%llu)",
506 seq, le64_to_cpu(i->j.seq) - 1,
509 seq = le64_to_cpu(i->j.seq);
511 fsck_err_on(bch2_journal_seq_is_blacklisted(c, seq, false), c,
512 "found blacklisted journal entry %llu", seq);
516 } while (bch2_journal_seq_is_blacklisted(c, seq, false));
522 /* journal replay early: */
524 static int journal_replay_entry_early(struct bch_fs *c,
525 struct jset_entry *entry)
529 switch (entry->type) {
530 case BCH_JSET_ENTRY_btree_root: {
531 struct btree_root *r;
533 if (entry->btree_id >= BTREE_ID_NR) {
534 bch_err(c, "filesystem has unknown btree type %u",
539 r = &c->btree_roots[entry->btree_id];
542 r->level = entry->level;
543 bkey_copy(&r->key, &entry->start[0]);
551 case BCH_JSET_ENTRY_usage: {
552 struct jset_entry_usage *u =
553 container_of(entry, struct jset_entry_usage, entry);
555 switch (entry->btree_id) {
556 case FS_USAGE_RESERVED:
557 if (entry->level < BCH_REPLICAS_MAX)
558 c->usage_base->persistent_reserved[entry->level] =
561 case FS_USAGE_INODES:
562 c->usage_base->nr_inodes = le64_to_cpu(u->v);
564 case FS_USAGE_KEY_VERSION:
565 atomic64_set(&c->key_version,
572 case BCH_JSET_ENTRY_data_usage: {
573 struct jset_entry_data_usage *u =
574 container_of(entry, struct jset_entry_data_usage, entry);
575 ret = bch2_replicas_set_usage(c, &u->r,
579 case BCH_JSET_ENTRY_blacklist: {
580 struct jset_entry_blacklist *bl_entry =
581 container_of(entry, struct jset_entry_blacklist, entry);
583 ret = bch2_journal_seq_blacklist_add(c,
584 le64_to_cpu(bl_entry->seq),
585 le64_to_cpu(bl_entry->seq) + 1);
588 case BCH_JSET_ENTRY_blacklist_v2: {
589 struct jset_entry_blacklist_v2 *bl_entry =
590 container_of(entry, struct jset_entry_blacklist_v2, entry);
592 ret = bch2_journal_seq_blacklist_add(c,
593 le64_to_cpu(bl_entry->start),
594 le64_to_cpu(bl_entry->end) + 1);
602 static int journal_replay_early(struct bch_fs *c,
603 struct bch_sb_field_clean *clean,
604 struct list_head *journal)
606 struct jset_entry *entry;
610 c->bucket_clock[READ].hand = le16_to_cpu(clean->read_clock);
611 c->bucket_clock[WRITE].hand = le16_to_cpu(clean->write_clock);
613 for (entry = clean->start;
614 entry != vstruct_end(&clean->field);
615 entry = vstruct_next(entry)) {
616 ret = journal_replay_entry_early(c, entry);
621 struct journal_replay *i =
622 list_last_entry(journal, struct journal_replay, list);
624 c->bucket_clock[READ].hand = le16_to_cpu(i->j.read_clock);
625 c->bucket_clock[WRITE].hand = le16_to_cpu(i->j.write_clock);
627 list_for_each_entry(i, journal, list)
628 vstruct_for_each(&i->j, entry) {
629 ret = journal_replay_entry_early(c, entry);
635 bch2_fs_usage_initialize(c);
640 /* sb clean section: */
642 static struct bkey_i *btree_root_find(struct bch_fs *c,
643 struct bch_sb_field_clean *clean,
645 enum btree_id id, unsigned *level)
648 struct jset_entry *entry, *start, *end;
651 start = clean->start;
652 end = vstruct_end(&clean->field);
655 end = vstruct_last(j);
658 for (entry = start; entry < end; entry = vstruct_next(entry))
659 if (entry->type == BCH_JSET_ENTRY_btree_root &&
660 entry->btree_id == id)
666 return ERR_PTR(-EINVAL);
669 *level = entry->level;
673 static int verify_superblock_clean(struct bch_fs *c,
674 struct bch_sb_field_clean **cleanp,
678 struct bch_sb_field_clean *clean = *cleanp;
681 if (!c->sb.clean || !j)
684 if (mustfix_fsck_err_on(j->seq != clean->journal_seq, c,
685 "superblock journal seq (%llu) doesn't match journal (%llu) after clean shutdown",
686 le64_to_cpu(clean->journal_seq),
687 le64_to_cpu(j->seq))) {
693 mustfix_fsck_err_on(j->read_clock != clean->read_clock, c,
694 "superblock read clock doesn't match journal after clean shutdown");
695 mustfix_fsck_err_on(j->write_clock != clean->write_clock, c,
696 "superblock read clock doesn't match journal after clean shutdown");
698 for (i = 0; i < BTREE_ID_NR; i++) {
699 struct bkey_i *k1, *k2;
700 unsigned l1 = 0, l2 = 0;
702 k1 = btree_root_find(c, clean, NULL, i, &l1);
703 k2 = btree_root_find(c, NULL, j, i, &l2);
708 mustfix_fsck_err_on(!k1 || !k2 ||
711 k1->k.u64s != k2->k.u64s ||
712 memcmp(k1, k2, bkey_bytes(k1)) ||
714 "superblock btree root doesn't match journal after clean shutdown");
720 static struct bch_sb_field_clean *read_superblock_clean(struct bch_fs *c)
722 struct bch_sb_field_clean *clean, *sb_clean;
725 mutex_lock(&c->sb_lock);
726 sb_clean = bch2_sb_get_clean(c->disk_sb.sb);
728 if (fsck_err_on(!sb_clean, c,
729 "superblock marked clean but clean section not present")) {
730 SET_BCH_SB_CLEAN(c->disk_sb.sb, false);
732 mutex_unlock(&c->sb_lock);
736 clean = kmemdup(sb_clean, vstruct_bytes(&sb_clean->field),
739 mutex_unlock(&c->sb_lock);
740 return ERR_PTR(-ENOMEM);
743 if (le16_to_cpu(c->disk_sb.sb->version) <
744 bcachefs_metadata_version_bkey_renumber)
745 bch2_sb_clean_renumber(clean, READ);
747 mutex_unlock(&c->sb_lock);
751 mutex_unlock(&c->sb_lock);
755 static int read_btree_roots(struct bch_fs *c)
760 for (i = 0; i < BTREE_ID_NR; i++) {
761 struct btree_root *r = &c->btree_roots[i];
766 if (i == BTREE_ID_ALLOC &&
767 c->opts.reconstruct_alloc) {
768 c->sb.compat &= ~(1ULL << BCH_COMPAT_FEAT_ALLOC_INFO);
774 __fsck_err(c, i == BTREE_ID_ALLOC
775 ? FSCK_CAN_IGNORE : 0,
776 "invalid btree root %s",
778 if (i == BTREE_ID_ALLOC)
779 c->sb.compat &= ~(1ULL << BCH_COMPAT_FEAT_ALLOC_INFO);
782 ret = bch2_btree_root_read(c, i, &r->key, r->level);
784 __fsck_err(c, i == BTREE_ID_ALLOC
785 ? FSCK_CAN_IGNORE : 0,
786 "error reading btree root %s",
788 if (i == BTREE_ID_ALLOC)
789 c->sb.compat &= ~(1ULL << BCH_COMPAT_FEAT_ALLOC_INFO);
793 for (i = 0; i < BTREE_ID_NR; i++)
794 if (!c->btree_roots[i].b)
795 bch2_btree_root_alloc(c, i);
800 int bch2_fs_recovery(struct bch_fs *c)
802 const char *err = "cannot allocate memory";
803 struct bch_sb_field_clean *clean = NULL;
805 bool wrote = false, write_sb = false;
809 clean = read_superblock_clean(c);
810 ret = PTR_ERR_OR_ZERO(clean);
815 bch_info(c, "recovering from clean shutdown, journal seq %llu",
816 le64_to_cpu(clean->journal_seq));
818 if (!c->replicas.entries) {
819 bch_info(c, "building replicas info");
820 set_bit(BCH_FS_REBUILD_REPLICAS, &c->flags);
823 if (!c->sb.clean || c->opts.fsck) {
826 ret = bch2_journal_read(c, &c->journal_entries);
830 if (mustfix_fsck_err_on(c->sb.clean && !journal_empty(&c->journal_entries), c,
831 "filesystem marked clean but journal not empty")) {
832 c->sb.compat &= ~(1ULL << BCH_COMPAT_FEAT_ALLOC_INFO);
833 SET_BCH_SB_CLEAN(c->disk_sb.sb, false);
837 if (!c->sb.clean && list_empty(&c->journal_entries)) {
838 bch_err(c, "no journal entries found");
839 ret = BCH_FSCK_REPAIR_IMPOSSIBLE;
843 c->journal_keys = journal_keys_sort(&c->journal_entries);
844 if (!c->journal_keys.d) {
849 j = &list_last_entry(&c->journal_entries,
850 struct journal_replay, list)->j;
852 ret = verify_superblock_clean(c, &clean, j);
856 journal_seq = le64_to_cpu(j->seq) + 1;
858 journal_seq = le64_to_cpu(clean->journal_seq) + 1;
862 !(c->sb.features & (1ULL << BCH_FEATURE_extents_above_btree_updates))) {
863 bch_err(c, "filesystem needs recovery from older version; run fsck from older bcachefs-tools to fix");
868 ret = journal_replay_early(c, clean, &c->journal_entries);
873 ret = bch2_journal_seq_blacklist_add(c,
877 bch_err(c, "error creating new journal seq blacklist entry");
884 ret = bch2_blacklist_table_initialize(c);
886 if (!list_empty(&c->journal_entries)) {
887 ret = verify_journal_entries_not_blacklisted_or_missing(c,
888 &c->journal_entries);
893 ret = bch2_fs_journal_start(&c->journal, journal_seq,
894 &c->journal_entries);
898 ret = read_btree_roots(c);
902 bch_verbose(c, "starting alloc read");
903 err = "error reading allocation information";
904 ret = bch2_alloc_read(c, &c->journal_keys);
907 bch_verbose(c, "alloc read done");
909 bch_verbose(c, "starting stripes_read");
910 err = "error reading stripes";
911 ret = bch2_stripes_read(c, &c->journal_keys);
914 bch_verbose(c, "stripes_read done");
916 set_bit(BCH_FS_ALLOC_READ_DONE, &c->flags);
918 if ((c->sb.compat & (1ULL << BCH_COMPAT_FEAT_ALLOC_INFO)) &&
919 !(c->sb.compat & (1ULL << BCH_COMPAT_FEAT_ALLOC_METADATA))) {
921 * interior btree node updates aren't consistent with the
922 * journal; after an unclean shutdown we have to walk all
923 * pointers to metadata:
925 bch_info(c, "starting metadata mark and sweep");
926 err = "error in mark and sweep";
927 ret = bch2_gc(c, &c->journal_keys, true, true);
930 bch_verbose(c, "mark and sweep done");
934 !(c->sb.compat & (1ULL << BCH_COMPAT_FEAT_ALLOC_INFO)) ||
935 test_bit(BCH_FS_REBUILD_REPLICAS, &c->flags)) {
936 bch_info(c, "starting mark and sweep");
937 err = "error in mark and sweep";
938 ret = bch2_gc(c, &c->journal_keys, true, false);
941 bch_verbose(c, "mark and sweep done");
944 clear_bit(BCH_FS_REBUILD_REPLICAS, &c->flags);
945 set_bit(BCH_FS_INITIAL_GC_DONE, &c->flags);
948 * Skip past versions that might have possibly been used (as nonces),
949 * but hadn't had their pointers written:
951 if (c->sb.encryption_type && !c->sb.clean)
952 atomic64_add(1 << 16, &c->key_version);
954 if (c->opts.norecovery)
957 bch_verbose(c, "starting journal replay");
958 err = "journal replay failed";
959 ret = bch2_journal_replay(c, c->journal_keys);
962 bch_verbose(c, "journal replay done");
964 if (!c->opts.nochanges) {
966 * note that even when filesystem was clean there might be work
967 * to do here, if we ran gc (because of fsck) which recalculated
970 bch_verbose(c, "writing allocation info");
971 err = "error writing out alloc info";
972 ret = bch2_stripes_write(c, BTREE_INSERT_LAZY_RW, &wrote) ?:
973 bch2_alloc_write(c, BTREE_INSERT_LAZY_RW, &wrote);
975 bch_err(c, "error writing alloc info");
978 bch_verbose(c, "alloc write done");
980 set_bit(BCH_FS_ALLOC_WRITTEN, &c->flags);
984 if (!(c->sb.features & (1 << BCH_FEATURE_atomic_nlink))) {
985 bch_info(c, "checking inode link counts");
986 err = "error in recovery";
987 ret = bch2_fsck_inode_nlink(c);
990 bch_verbose(c, "check inodes done");
993 bch_verbose(c, "checking for deleted inodes");
994 err = "error in recovery";
995 ret = bch2_fsck_walk_inodes_only(c);
998 bch_verbose(c, "check inodes done");
1003 bch_info(c, "starting fsck");
1004 err = "error in fsck";
1005 ret = bch2_fsck_full(c);
1008 bch_verbose(c, "fsck done");
1011 if (enabled_qtypes(c)) {
1012 bch_verbose(c, "reading quotas");
1013 ret = bch2_fs_quota_read(c);
1016 bch_verbose(c, "quotas done");
1019 mutex_lock(&c->sb_lock);
1020 if (c->opts.version_upgrade) {
1021 if (c->sb.version < bcachefs_metadata_version_new_versioning)
1022 c->disk_sb.sb->version_min =
1023 le16_to_cpu(bcachefs_metadata_version_min);
1024 c->disk_sb.sb->version = le16_to_cpu(bcachefs_metadata_version_current);
1025 c->disk_sb.sb->features[0] |= BCH_SB_FEATURES_ALL;
1029 if (!test_bit(BCH_FS_ERROR, &c->flags)) {
1030 c->disk_sb.sb->compat[0] |= 1ULL << BCH_COMPAT_FEAT_ALLOC_INFO;
1035 !test_bit(BCH_FS_ERROR, &c->flags)) {
1036 c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_atomic_nlink;
1037 SET_BCH_SB_HAS_ERRORS(c->disk_sb.sb, 0);
1042 bch2_write_super(c);
1043 mutex_unlock(&c->sb_lock);
1045 if (c->journal_seq_blacklist_table &&
1046 c->journal_seq_blacklist_table->nr > 128)
1047 queue_work(system_long_wq, &c->journal_seq_blacklist_gc_work);
1052 set_bit(BCH_FS_FSCK_DONE, &c->flags);
1053 bch2_flush_fsck_errs(c);
1055 if (!c->opts.keep_journal) {
1056 bch2_journal_keys_free(&c->journal_keys);
1057 bch2_journal_entries_free(&c->journal_entries);
1061 bch_err(c, "Error in recovery: %s (%i)", err, ret);
1063 bch_verbose(c, "ret %i", ret);
1067 int bch2_fs_initialize(struct bch_fs *c)
1069 struct bch_inode_unpacked root_inode, lostfound_inode;
1070 struct bkey_inode_buf packed_inode;
1071 struct qstr lostfound = QSTR("lost+found");
1072 const char *err = "cannot allocate memory";
1078 bch_notice(c, "initializing new filesystem");
1080 mutex_lock(&c->sb_lock);
1081 for_each_online_member(ca, c, i)
1082 bch2_mark_dev_superblock(c, ca, 0);
1083 mutex_unlock(&c->sb_lock);
1085 set_bit(BCH_FS_ALLOC_READ_DONE, &c->flags);
1086 set_bit(BCH_FS_INITIAL_GC_DONE, &c->flags);
1088 for (i = 0; i < BTREE_ID_NR; i++)
1089 bch2_btree_root_alloc(c, i);
1091 err = "unable to allocate journal buckets";
1092 for_each_online_member(ca, c, i) {
1093 ret = bch2_dev_journal_alloc(ca);
1095 percpu_ref_put(&ca->io_ref);
1101 * journal_res_get() will crash if called before this has
1102 * set up the journal.pin FIFO and journal.cur pointer:
1104 bch2_fs_journal_start(&c->journal, 1, &journal);
1105 bch2_journal_set_replay_done(&c->journal);
1107 bch2_inode_init(c, &root_inode, 0, 0,
1108 S_IFDIR|S_IRWXU|S_IRUGO|S_IXUGO, 0, NULL);
1109 root_inode.bi_inum = BCACHEFS_ROOT_INO;
1110 bch2_inode_pack(&packed_inode, &root_inode);
1112 err = "error creating root directory";
1113 ret = bch2_btree_insert(c, BTREE_ID_INODES,
1114 &packed_inode.inode.k_i,
1115 NULL, NULL, BTREE_INSERT_LAZY_RW);
1119 bch2_inode_init_early(c, &lostfound_inode);
1121 err = "error creating lost+found";
1122 ret = bch2_trans_do(c, NULL, NULL, 0,
1123 bch2_create_trans(&trans, BCACHEFS_ROOT_INO,
1124 &root_inode, &lostfound_inode,
1126 0, 0, S_IFDIR|0700, 0,
1131 if (enabled_qtypes(c)) {
1132 ret = bch2_fs_quota_read(c);
1137 err = "error writing first journal entry";
1138 ret = bch2_journal_meta(&c->journal);
1142 mutex_lock(&c->sb_lock);
1143 c->disk_sb.sb->version = c->disk_sb.sb->version_min =
1144 le16_to_cpu(bcachefs_metadata_version_current);
1145 c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_atomic_nlink;
1146 c->disk_sb.sb->features[0] |= BCH_SB_FEATURES_ALL;
1148 SET_BCH_SB_INITIALIZED(c->disk_sb.sb, true);
1149 SET_BCH_SB_CLEAN(c->disk_sb.sb, false);
1151 bch2_write_super(c);
1152 mutex_unlock(&c->sb_lock);
1156 pr_err("Error initializing new filesystem: %s (%i)", err, ret);