1 files changed, 37 insertions, 267 deletions

diff --git a/fs/bcachefs/recovery.c b/fs/bcachefs/recovery.c
index 03f9d6afe46788..e8b43400929362 100644
--- a/fs/bcachefs/recovery.c
+++ b/fs/bcachefs/recovery.c
@@ -1,35 +1,30 @@
 // SPDX-License-Identifier: GPL-2.0
 
 #include "bcachefs.h"
-#include "backpointers.h"
-#include "bkey_buf.h"
 #include "alloc_background.h"
-#include "btree_gc.h"
+#include "bkey_buf.h"
 #include "btree_journal_iter.h"
 #include "btree_update.h"
 #include "btree_update_interior.h"
 #include "btree_io.h"
 #include "buckets.h"
 #include "dirent.h"
-#include "ec.h"
 #include "errcode.h"
 #include "error.h"
 #include "fs-common.h"
-#include "fsck.h"
 #include "journal_io.h"
 #include "journal_reclaim.h"
 #include "journal_seq_blacklist.h"
-#include "lru.h"
 #include "logged_ops.h"
 #include "move.h"
 #include "quota.h"
 #include "rebalance.h"
 #include "recovery.h"
+#include "recovery_passes.h"
 #include "replicas.h"
 #include "sb-clean.h"
 #include "sb-downgrade.h"
 #include "snapshot.h"
-#include "subvolume.h"
 #include "super-io.h"
 
 #include <linux/sort.h>
@@ -186,7 +181,7 @@ static int journal_sort_seq_cmp(const void *_l, const void *_r)
 	return cmp_int(l->journal_seq, r->journal_seq);
 }
 
-static int bch2_journal_replay(struct bch_fs *c)
+int bch2_journal_replay(struct bch_fs *c)
 {
 	struct journal_keys *keys = &c->journal_keys;
 	DARRAY(struct journal_key *) keys_sorted = { 0 };
@@ -194,6 +189,7 @@ static int bch2_journal_replay(struct bch_fs *c)
 	u64 start_seq	= c->journal_replay_seq_start;
 	u64 end_seq	= c->journal_replay_seq_start;
 	struct btree_trans *trans = bch2_trans_get(c);
+	bool immediate_flush = false;
 	int ret = 0;
 
 	if (keys->nr) {
@@ -215,6 +211,13 @@ static int bch2_journal_replay(struct bch_fs *c)
 	darray_for_each(*keys, k) {
 		cond_resched();
 
+		/*
+		 * k->allocated means the key wasn't read in from the journal,
+		 * rather it was from early repair code
+		 */
+		if (k->allocated)
+			immediate_flush = true;
+
 		/* Skip fastpath if we're low on space in the journal */
 		ret = c->journal.watermark ? -1 :
 			commit_do(trans, NULL, NULL,
@@ -266,7 +269,8 @@ static int bch2_journal_replay(struct bch_fs *c)
 	bch2_trans_put(trans);
 	trans = NULL;
 
-	if (!c->opts.keep_journal)
+	if (!c->opts.keep_journal &&
+	    c->recovery_pass_done >= BCH_RECOVERY_PASS_journal_replay)
 		bch2_journal_keys_put_initial(c);
 
 	replay_now_at(j, j->replay_journal_seq_end);
@@ -274,6 +278,12 @@ static int bch2_journal_replay(struct bch_fs *c)
 
 	bch2_journal_set_replay_done(j);
 
+	/* if we did any repair, flush it immediately */
+	if (immediate_flush) {
+		bch2_journal_flush_all_pins(&c->journal);
+		ret = bch2_journal_meta(&c->journal);
+	}
+
 	if (keys->nr)
 		bch2_journal_log_msg(c, "journal replay finished");
 err:
@@ -471,150 +481,6 @@ fsck_err:
 	return ret;
 }
 
-static int bch2_initialize_subvolumes(struct bch_fs *c)
-{
-	struct bkey_i_snapshot_tree	root_tree;
-	struct bkey_i_snapshot		root_snapshot;
-	struct bkey_i_subvolume		root_volume;
-	int ret;
-
-	bkey_snapshot_tree_init(&root_tree.k_i);
-	root_tree.k.p.offset		= 1;
-	root_tree.v.master_subvol	= cpu_to_le32(1);
-	root_tree.v.root_snapshot	= cpu_to_le32(U32_MAX);
-
-	bkey_snapshot_init(&root_snapshot.k_i);
-	root_snapshot.k.p.offset = U32_MAX;
-	root_snapshot.v.flags	= 0;
-	root_snapshot.v.parent	= 0;
-	root_snapshot.v.subvol	= cpu_to_le32(BCACHEFS_ROOT_SUBVOL);
-	root_snapshot.v.tree	= cpu_to_le32(1);
-	SET_BCH_SNAPSHOT_SUBVOL(&root_snapshot.v, true);
-
-	bkey_subvolume_init(&root_volume.k_i);
-	root_volume.k.p.offset = BCACHEFS_ROOT_SUBVOL;
-	root_volume.v.flags	= 0;
-	root_volume.v.snapshot	= cpu_to_le32(U32_MAX);
-	root_volume.v.inode	= cpu_to_le64(BCACHEFS_ROOT_INO);
-
-	ret =   bch2_btree_insert(c, BTREE_ID_snapshot_trees,	&root_tree.k_i, NULL, 0) ?:
-		bch2_btree_insert(c, BTREE_ID_snapshots,	&root_snapshot.k_i, NULL, 0) ?:
-		bch2_btree_insert(c, BTREE_ID_subvolumes,	&root_volume.k_i, NULL, 0);
-	bch_err_fn(c, ret);
-	return ret;
-}
-
-static int __bch2_fs_upgrade_for_subvolumes(struct btree_trans *trans)
-{
-	struct btree_iter iter;
-	struct bkey_s_c k;
-	struct bch_inode_unpacked inode;
-	int ret;
-
-	k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_inodes,
-			       SPOS(0, BCACHEFS_ROOT_INO, U32_MAX), 0);
-	ret = bkey_err(k);
-	if (ret)
-		return ret;
-
-	if (!bkey_is_inode(k.k)) {
-		bch_err(trans->c, "root inode not found");
-		ret = -BCH_ERR_ENOENT_inode;
-		goto err;
-	}
-
-	ret = bch2_inode_unpack(k, &inode);
-	BUG_ON(ret);
-
-	inode.bi_subvol = BCACHEFS_ROOT_SUBVOL;
-
-	ret = bch2_inode_write(trans, &iter, &inode);
-err:
-	bch2_trans_iter_exit(trans, &iter);
-	return ret;
-}
-
-/* set bi_subvol on root inode */
-noinline_for_stack
-static int bch2_fs_upgrade_for_subvolumes(struct bch_fs *c)
-{
-	int ret = bch2_trans_do(c, NULL, NULL, BCH_TRANS_COMMIT_lazy_rw,
-				__bch2_fs_upgrade_for_subvolumes(trans));
-	bch_err_fn(c, ret);
-	return ret;
-}
-
-const char * const bch2_recovery_passes[] = {
-#define x(_fn, ...)	#_fn,
-	BCH_RECOVERY_PASSES()
-#undef x
-	NULL
-};
-
-static int bch2_check_allocations(struct bch_fs *c)
-{
-	return bch2_gc(c, true, c->opts.norecovery);
-}
-
-static int bch2_set_may_go_rw(struct bch_fs *c)
-{
-	struct journal_keys *keys = &c->journal_keys;
-
-	/*
-	 * After we go RW, the journal keys buffer can't be modified (except for
-	 * setting journal_key->overwritten: it will be accessed by multiple
-	 * threads
-	 */
-	move_gap(keys, keys->nr);
-
-	set_bit(BCH_FS_may_go_rw, &c->flags);
-
-	if (keys->nr || c->opts.fsck || !c->sb.clean)
-		return bch2_fs_read_write_early(c);
-	return 0;
-}
-
-struct recovery_pass_fn {
-	int		(*fn)(struct bch_fs *);
-	unsigned	when;
-};
-
-static struct recovery_pass_fn recovery_pass_fns[] = {
-#define x(_fn, _id, _when)	{ .fn = bch2_##_fn, .when = _when },
-	BCH_RECOVERY_PASSES()
-#undef x
-};
-
-u64 bch2_recovery_passes_to_stable(u64 v)
-{
-	static const u8 map[] = {
-#define x(n, id, ...)	[BCH_RECOVERY_PASS_##n] = BCH_RECOVERY_PASS_STABLE_##n,
-	BCH_RECOVERY_PASSES()
-#undef x
-	};
-
-	u64 ret = 0;
-	for (unsigned i = 0; i < ARRAY_SIZE(map); i++)
-		if (v & BIT_ULL(i))
-			ret |= BIT_ULL(map[i]);
-	return ret;
-}
-
-u64 bch2_recovery_passes_from_stable(u64 v)
-{
-	static const u8 map[] = {
-#define x(n, id, ...)	[BCH_RECOVERY_PASS_STABLE_##n] = BCH_RECOVERY_PASS_##n,
-	BCH_RECOVERY_PASSES()
-#undef x
-	};
-
-	u64 ret = 0;
-	for (unsigned i = 0; i < ARRAY_SIZE(map); i++)
-		if (v & BIT_ULL(i))
-			ret |= BIT_ULL(map[i]);
-	return ret;
-}
-
 static bool check_version_upgrade(struct bch_fs *c)
 {
 	unsigned latest_version	= bcachefs_metadata_version_current;
@@ -687,96 +553,6 @@ static bool check_version_upgrade(struct bch_fs *c)
 	return false;
 }
 
-u64 bch2_fsck_recovery_passes(void)
-{
-	u64 ret = 0;
-
-	for (unsigned i = 0; i < ARRAY_SIZE(recovery_pass_fns); i++)
-		if (recovery_pass_fns[i].when & PASS_FSCK)
-			ret |= BIT_ULL(i);
-	return ret;
-}
-
-static bool should_run_recovery_pass(struct bch_fs *c, enum bch_recovery_pass pass)
-{
-	struct recovery_pass_fn *p = recovery_pass_fns + pass;
-
-	if (c->opts.norecovery && pass > BCH_RECOVERY_PASS_snapshots_read)
-		return false;
-	if (c->recovery_passes_explicit & BIT_ULL(pass))
-		return true;
-	if ((p->when & PASS_FSCK) && c->opts.fsck)
-		return true;
-	if ((p->when & PASS_UNCLEAN) && !c->sb.clean)
-		return true;
-	if (p->when & PASS_ALWAYS)
-		return true;
-	return false;
-}
-
-static int bch2_run_recovery_pass(struct bch_fs *c, enum bch_recovery_pass pass)
-{
-	struct recovery_pass_fn *p = recovery_pass_fns + pass;
-	int ret;
-
-	if (!(p->when & PASS_SILENT))
-		bch2_print(c, KERN_INFO bch2_log_msg(c, "%s..."),
-			   bch2_recovery_passes[pass]);
-	ret = p->fn(c);
-	if (ret)
-		return ret;
-	if (!(p->when & PASS_SILENT))
-		bch2_print(c, KERN_CONT " done\n");
-
-	return 0;
-}
-
-static int bch2_run_recovery_passes(struct bch_fs *c)
-{
-	int ret = 0;
-
-	while (c->curr_recovery_pass < ARRAY_SIZE(recovery_pass_fns)) {
-		if (should_run_recovery_pass(c, c->curr_recovery_pass)) {
-			unsigned pass = c->curr_recovery_pass;
-
-			ret = bch2_run_recovery_pass(c, c->curr_recovery_pass);
-			if (bch2_err_matches(ret, BCH_ERR_restart_recovery) ||
-			    (ret && c->curr_recovery_pass < pass))
-				continue;
-			if (ret)
-				break;
-
-			c->recovery_passes_complete |= BIT_ULL(c->curr_recovery_pass);
-		}
-		c->curr_recovery_pass++;
-		c->recovery_pass_done = max(c->recovery_pass_done, c->curr_recovery_pass);
-	}
-
-	return ret;
-}
-
-int bch2_run_online_recovery_passes(struct bch_fs *c)
-{
-	int ret = 0;
-
-	for (unsigned i = 0; i < ARRAY_SIZE(recovery_pass_fns); i++) {
-		struct recovery_pass_fn *p = recovery_pass_fns + i;
-
-		if (!(p->when & PASS_ONLINE))
-			continue;
-
-		ret = bch2_run_recovery_pass(c, i);
-		if (bch2_err_matches(ret, BCH_ERR_restart_recovery)) {
-			i = c->curr_recovery_pass;
-			continue;
-		}
-		if (ret)
-			break;
-	}
-
-	return ret;
-}
-
 int bch2_fs_recovery(struct bch_fs *c)
 {
 	struct bch_sb_field_clean *clean = NULL;
@@ -809,24 +585,14 @@ int bch2_fs_recovery(struct bch_fs *c)
 		goto err;
 	}
 
-	if (c->opts.fsck && c->opts.norecovery) {
-		bch_err(c, "cannot select both norecovery and fsck");
-		ret = -EINVAL;
-		goto err;
-	}
+	if (c->opts.norecovery)
+		c->opts.recovery_pass_last = BCH_RECOVERY_PASS_journal_replay - 1;
 
 	if (!c->opts.nochanges) {
 		mutex_lock(&c->sb_lock);
+		struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
 		bool write_sb = false;
 
-		struct bch_sb_field_ext *ext =
-			bch2_sb_field_get_minsize(&c->disk_sb, ext, sizeof(*ext) / sizeof(u64));
-		if (!ext) {
-			ret = -BCH_ERR_ENOSPC_sb;
-			mutex_unlock(&c->sb_lock);
-			goto err;
-		}
-
 		if (BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb)) {
 			ext->recovery_passes_required[0] |=
 				cpu_to_le64(bch2_recovery_passes_to_stable(BIT_ULL(BCH_RECOVERY_PASS_check_topology)));
@@ -1017,6 +783,12 @@ use_clean:
 
 	clear_bit(BCH_FS_fsck_running, &c->flags);
 
+	/* fsync if we fixed errors */
+	if (test_bit(BCH_FS_errors_fixed, &c->flags)) {
+		bch2_journal_flush_all_pins(&c->journal);
+		bch2_journal_meta(&c->journal);
+	}
+
 	/* If we fixed errors, verify that fs is actually clean now: */
 	if (IS_ENABLED(CONFIG_BCACHEFS_DEBUG) &&
 	    test_bit(BCH_FS_errors_fixed, &c->flags) &&
@@ -1051,6 +823,7 @@ use_clean:
 	}
 
 	mutex_lock(&c->sb_lock);
+	struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
 	bool write_sb = false;
 
 	if (BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb) != le16_to_cpu(c->disk_sb.sb->version)) {
@@ -1064,15 +837,12 @@ use_clean:
 		write_sb = true;
 	}
 
-	if (!test_bit(BCH_FS_error, &c->flags)) {
-		struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
-		if (ext &&
-		    (!bch2_is_zero(ext->recovery_passes_required, sizeof(ext->recovery_passes_required)) ||
-		     !bch2_is_zero(ext->errors_silent, sizeof(ext->errors_silent)))) {
-			memset(ext->recovery_passes_required, 0, sizeof(ext->recovery_passes_required));
-			memset(ext->errors_silent, 0, sizeof(ext->errors_silent));
-			write_sb = true;
-		}
+	if (!test_bit(BCH_FS_error, &c->flags) &&
+	    (!bch2_is_zero(ext->recovery_passes_required, sizeof(ext->recovery_passes_required)) ||
+	     !bch2_is_zero(ext->errors_silent, sizeof(ext->errors_silent)))) {
+		memset(ext->recovery_passes_required, 0, sizeof(ext->recovery_passes_required));
+		memset(ext->errors_silent, 0, sizeof(ext->errors_silent));
+		write_sb = true;
 	}
 
 	if (c->opts.fsck &&
@@ -1155,7 +925,7 @@ int bch2_fs_initialize(struct bch_fs *c)
 	}
 	mutex_unlock(&c->sb_lock);
 
-	c->curr_recovery_pass = ARRAY_SIZE(recovery_pass_fns);
+	c->curr_recovery_pass = BCH_RECOVERY_PASS_NR;
 	set_bit(BCH_FS_may_go_rw, &c->flags);
 
 	for (unsigned i = 0; i < BTREE_ID_NR; i++)
@@ -1230,7 +1000,7 @@ int bch2_fs_initialize(struct bch_fs *c)
 	if (ret)
 		goto err;
 
-	c->recovery_pass_done = ARRAY_SIZE(recovery_pass_fns) - 1;
+	c->recovery_pass_done = BCH_RECOVERY_PASS_NR - 1;
 
 	if (enabled_qtypes(c)) {
 		ret = bch2_fs_quota_read(c);