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bcachefs: bch2_run_explicit_recovery_pass()
This introduces bch2_run_explicit_recovery_pass() and uses it for when fsck detects that we need to re-run dead snaphots cleanup, and makes dead snapshot cleanup more like a normal recovery pass. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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ef1634f0f1
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ae2e13d780
@ -680,7 +680,7 @@ enum bch_write_ref {
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x(check_snapshot_trees, PASS_FSCK) \
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x(check_snapshot_trees, PASS_FSCK) \
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x(check_snapshots, PASS_FSCK) \
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x(check_snapshots, PASS_FSCK) \
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x(check_subvols, PASS_FSCK) \
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x(check_subvols, PASS_FSCK) \
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x(delete_dead_snapshots, PASS_FSCK|PASS_UNCLEAN|PASS_SILENT) \
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x(delete_dead_snapshots, PASS_FSCK|PASS_UNCLEAN) \
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x(fs_upgrade_for_subvolumes, 0) \
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x(fs_upgrade_for_subvolumes, 0) \
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x(check_inodes, PASS_FSCK|PASS_UNCLEAN) \
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x(check_inodes, PASS_FSCK|PASS_UNCLEAN) \
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x(check_extents, PASS_FSCK) \
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x(check_extents, PASS_FSCK) \
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@ -1179,6 +1179,19 @@ static inline bool bch2_dev_exists2(const struct bch_fs *c, unsigned dev)
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return dev < c->sb.nr_devices && c->devs[dev];
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return dev < c->sb.nr_devices && c->devs[dev];
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}
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}
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/*
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* For when we need to rewind recovery passes and run a pass we skipped:
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*/
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static inline int bch2_run_explicit_recovery_pass(struct bch_fs *c,
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enum bch_recovery_pass pass)
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{
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BUG_ON(c->curr_recovery_pass < pass);
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c->recovery_passes_explicit |= BIT_ULL(pass);
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c->curr_recovery_pass = pass;
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return -BCH_ERR_restart_recovery;
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}
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#define BKEY_PADDED_ONSTACK(key, pad) \
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#define BKEY_PADDED_ONSTACK(key, pad) \
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struct { struct bkey_i key; __u64 key ## _pad[pad]; }
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struct { struct bkey_i key; __u64 key ## _pad[pad]; }
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@ -157,7 +157,7 @@
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x(BCH_ERR_fsck, fsck_errors_not_fixed) \
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x(BCH_ERR_fsck, fsck_errors_not_fixed) \
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x(BCH_ERR_fsck, fsck_repair_unimplemented) \
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x(BCH_ERR_fsck, fsck_repair_unimplemented) \
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x(BCH_ERR_fsck, fsck_repair_impossible) \
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x(BCH_ERR_fsck, fsck_repair_impossible) \
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x(0, need_snapshot_cleanup) \
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x(0, restart_recovery) \
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x(0, need_topology_repair) \
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x(0, need_topology_repair) \
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x(0, unwritten_extent_update) \
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x(0, unwritten_extent_update) \
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x(EINVAL, device_state_not_allowed) \
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x(EINVAL, device_state_not_allowed) \
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@ -500,7 +500,7 @@ static int snapshots_seen_update(struct bch_fs *c, struct snapshots_seen *s,
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bch2_btree_ids[btree_id],
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bch2_btree_ids[btree_id],
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pos.inode, pos.offset,
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pos.inode, pos.offset,
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i->id, n.id, n.equiv);
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i->id, n.id, n.equiv);
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return -BCH_ERR_need_snapshot_cleanup;
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return bch2_run_explicit_recovery_pass(c, BCH_RECOVERY_PASS_delete_dead_snapshots);
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}
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}
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}
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}
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@ -1270,11 +1270,8 @@ again:
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c->curr_recovery_pass++;
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c->curr_recovery_pass++;
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}
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}
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if (bch2_err_matches(ret, BCH_ERR_need_snapshot_cleanup)) {
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if (bch2_err_matches(ret, BCH_ERR_restart_recovery))
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set_bit(BCH_FS_HAVE_DELETED_SNAPSHOTS, &c->flags);
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c->curr_recovery_pass = BCH_RECOVERY_PASS_delete_dead_snapshots;
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goto again;
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goto again;
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}
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return ret;
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return ret;
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}
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}
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@ -331,8 +331,10 @@ int bch2_mark_snapshot(struct btree_trans *trans,
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parent - id - 1 < IS_ANCESTOR_BITMAP)
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parent - id - 1 < IS_ANCESTOR_BITMAP)
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__set_bit(parent - id - 1, t->is_ancestor);
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__set_bit(parent - id - 1, t->is_ancestor);
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if (BCH_SNAPSHOT_DELETED(s.v))
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if (BCH_SNAPSHOT_DELETED(s.v)) {
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set_bit(BCH_FS_HAVE_DELETED_SNAPSHOTS, &c->flags);
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set_bit(BCH_FS_HAVE_DELETED_SNAPSHOTS, &c->flags);
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c->recovery_passes_explicit |= BIT_ULL(BCH_RECOVERY_PASS_delete_dead_snapshots);
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}
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} else {
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} else {
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memset(t, 0, sizeof(*t));
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memset(t, 0, sizeof(*t));
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}
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}
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@ -1302,9 +1304,6 @@ int bch2_delete_dead_snapshots(struct bch_fs *c)
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u32 i, id;
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u32 i, id;
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int ret = 0;
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int ret = 0;
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if (!test_bit(BCH_FS_HAVE_DELETED_SNAPSHOTS, &c->flags))
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return 0;
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if (!test_bit(BCH_FS_STARTED, &c->flags)) {
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if (!test_bit(BCH_FS_STARTED, &c->flags)) {
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ret = bch2_fs_read_write_early(c);
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ret = bch2_fs_read_write_early(c);
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if (ret) {
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if (ret) {
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@ -1399,7 +1398,8 @@ static void bch2_delete_dead_snapshots_work(struct work_struct *work)
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{
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{
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struct bch_fs *c = container_of(work, struct bch_fs, snapshot_delete_work);
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struct bch_fs *c = container_of(work, struct bch_fs, snapshot_delete_work);
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bch2_delete_dead_snapshots(c);
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if (test_bit(BCH_FS_HAVE_DELETED_SNAPSHOTS, &c->flags))
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bch2_delete_dead_snapshots(c);
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bch2_write_ref_put(c, BCH_WRITE_REF_delete_dead_snapshots);
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bch2_write_ref_put(c, BCH_WRITE_REF_delete_dead_snapshots);
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}
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}
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