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bcachefs: check_subvol_path() now prints subvol root inode

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-09-23 22:32:47 -04:00
parent 0b0f0ad93c
commit 3a5895e3ac
2 changed files with 14 additions and 20 deletions
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32
fs/bcachefs/fsck.c
View file

@ -2371,22 +2371,6 @@ static bool darray_u32_has(darray_u32 *d, u32 v)
return false; return false;
} }
/*
* We've checked that inode backpointers point to valid dirents; here, it's
* sufficient to check that the subvolume root has a dirent:
*/
static int subvol_has_dirent(struct btree_trans *trans, struct bkey_s_c_subvolume s)
{
struct bch_inode_unpacked inode;
int ret = bch2_inode_find_by_inum_trans(trans,
(subvol_inum) { s.k->p.offset, le64_to_cpu(s.v->inode) },
&inode);
if (ret)
return ret;
return inode.bi_dir != 0;
}
static int check_subvol_path(struct btree_trans *trans, struct btree_iter *iter, struct bkey_s_c k) static int check_subvol_path(struct btree_trans *trans, struct btree_iter *iter, struct bkey_s_c k)
{ {
struct bch_fs *c = trans->c; struct bch_fs *c = trans->c;
@ -2405,14 +2389,24 @@ static int check_subvol_path(struct btree_trans *trans, struct btree_iter *iter,
struct bkey_s_c_subvolume s = bkey_s_c_to_subvolume(k); struct bkey_s_c_subvolume s = bkey_s_c_to_subvolume(k);
ret = subvol_has_dirent(trans, s); struct bch_inode_unpacked subvol_root;
if (ret < 0) ret = bch2_inode_find_by_inum_trans(trans,
(subvol_inum) { s.k->p.offset, le64_to_cpu(s.v->inode) },
&subvol_root);
if (ret)
break; break;
if (fsck_err_on(!ret, /*
* We've checked that inode backpointers point to valid dirents;
* here, it's sufficient to check that the subvolume root has a
* dirent:
*/
if (fsck_err_on(!subvol_root.bi_dir,
trans, subvol_unreachable, trans, subvol_unreachable,
"unreachable subvolume %s", "unreachable subvolume %s",
(bch2_bkey_val_to_text(&buf, c, s.s_c), (bch2_bkey_val_to_text(&buf, c, s.s_c),
prt_newline(&buf),
bch2_inode_unpacked_to_text(&buf, &subvol_root),
buf.buf))) { buf.buf))) {
ret = reattach_subvol(trans, s); ret = reattach_subvol(trans, s);
break; break;

2
fs/bcachefs/sb-errors_format.h
View file

@ -271,7 +271,7 @@ enum bch_fsck_flags {
x(subvol_children_not_set, 256, 0) \ x(subvol_children_not_set, 256, 0) \
x(subvol_children_bad, 257, 0) \ x(subvol_children_bad, 257, 0) \
x(subvol_loop, 258, 0) \ x(subvol_loop, 258, 0) \
x(subvol_unreachable, 259, 0) \ x(subvol_unreachable, 259, FSCK_AUTOFIX) \
x(btree_node_bkey_bad_u64s, 260, 0) \ x(btree_node_bkey_bad_u64s, 260, 0) \
x(btree_node_topology_empty_interior_node, 261, 0) \ x(btree_node_topology_empty_interior_node, 261, 0) \
x(btree_ptr_v2_min_key_bad, 262, 0) \ x(btree_ptr_v2_min_key_bad, 262, 0) \