return ret ?: subdirs;
}
-static int __snapshot_lookup_subvol(struct btree_trans *trans, u32 snapshot,
- u32 *subvol)
-{
- struct bch_snapshot s;
- int ret = bch2_bkey_get_val_typed(trans, BTREE_ID_snapshots,
- POS(0, snapshot), 0,
- snapshot, &s);
- if (!ret)
- *subvol = le32_to_cpu(s.subvol);
- else if (bch2_err_matches(ret, ENOENT))
- bch_err(trans->c, "snapshot %u not found", snapshot);
- return ret;
-
-}
-
-static int __subvol_lookup(struct btree_trans *trans, u32 subvol,
- u32 *snapshot, u64 *inum)
+static int subvol_lookup(struct btree_trans *trans, u32 subvol,
+ u32 *snapshot, u64 *inum)
{
struct bch_subvolume s;
int ret;
return ret;
}
-static int subvol_lookup(struct btree_trans *trans, u32 subvol,
- u32 *snapshot, u64 *inum)
-{
- return lockrestart_do(trans, __subvol_lookup(trans, subvol, snapshot, inum));
-}
-
static int lookup_first_inode(struct btree_trans *trans, u64 inode_nr,
struct bch_inode_unpacked *inode)
{
return ret;
}
-static int __lookup_inode(struct btree_trans *trans, u64 inode_nr,
+static int lookup_inode(struct btree_trans *trans, u64 inode_nr,
struct bch_inode_unpacked *inode,
u32 *snapshot)
{
return ret;
}
-static int lookup_inode(struct btree_trans *trans, u64 inode_nr,
- struct bch_inode_unpacked *inode,
- u32 *snapshot)
-{
- return lockrestart_do(trans, __lookup_inode(trans, inode_nr, inode, snapshot));
-}
-
static int __lookup_dirent(struct btree_trans *trans,
struct bch_hash_info hash_info,
subvol_inum dir, struct qstr *name,
}
/* Get lost+found, create if it doesn't exist: */
-static int lookup_lostfound(struct btree_trans *trans, u32 subvol,
+static int lookup_lostfound(struct btree_trans *trans, u32 snapshot,
struct bch_inode_unpacked *lostfound)
{
struct bch_fs *c = trans->c;
- struct bch_inode_unpacked root;
- struct bch_hash_info root_hash_info;
struct qstr lostfound_str = QSTR("lost+found");
- subvol_inum root_inum = { .subvol = subvol };
u64 inum = 0;
unsigned d_type = 0;
- u32 snapshot;
int ret;
- ret = __subvol_lookup(trans, subvol, &snapshot, &root_inum.inum);
+ struct bch_snapshot_tree st;
+ ret = bch2_snapshot_tree_lookup(trans,
+ bch2_snapshot_tree(c, snapshot), &st);
if (ret)
return ret;
- ret = __lookup_inode(trans, root_inum.inum, &root, &snapshot);
+ subvol_inum root_inum = { .subvol = le32_to_cpu(st.master_subvol) };
+ u32 subvol_snapshot;
+
+ ret = subvol_lookup(trans, le32_to_cpu(st.master_subvol),
+ &subvol_snapshot, &root_inum.inum);
+ bch_err_msg(c, ret, "looking up root subvol");
if (ret)
return ret;
- root_hash_info = bch2_hash_info_init(c, &root);
+ struct bch_inode_unpacked root_inode;
+ struct bch_hash_info root_hash_info;
+ ret = lookup_inode(trans, root_inum.inum, &root_inode, &snapshot);
+ bch_err_msg(c, ret, "looking up root inode");
+ if (ret)
+ return ret;
+
+ root_hash_info = bch2_hash_info_init(c, &root_inode);
ret = __lookup_dirent(trans, root_hash_info, root_inum,
- &lostfound_str, &inum, &d_type);
- if (bch2_err_matches(ret, ENOENT)) {
- bch_notice(c, "creating lost+found");
+ &lostfound_str, &inum, &d_type);
+ if (bch2_err_matches(ret, ENOENT))
goto create_lostfound;
- }
bch_err_fn(c, ret);
if (ret)
* The bch2_check_dirents pass has already run, dangling dirents
* shouldn't exist here:
*/
- return __lookup_inode(trans, inum, lostfound, &snapshot);
+ return lookup_inode(trans, inum, lostfound, &snapshot);
create_lostfound:
+ /*
+ * XXX: we could have a nicer log message here if we had a nice way to
+ * walk backpointers to print a path
+ */
+ bch_notice(c, "creating lost+found in snapshot %u", le32_to_cpu(st.root_snapshot));
+
+ u64 now = bch2_current_time(c);
+ struct btree_iter lostfound_iter = { NULL };
+ u64 cpu = raw_smp_processor_id();
+
bch2_inode_init_early(c, lostfound);
+ bch2_inode_init_late(lostfound, now, 0, 0, S_IFDIR|0700, 0, &root_inode);
+ lostfound->bi_dir = root_inode.bi_inum;
+
+ root_inode.bi_nlink++;
+
+ ret = bch2_inode_create(trans, &lostfound_iter, lostfound, snapshot, cpu);
+ if (ret)
+ goto err;
- ret = bch2_create_trans(trans, root_inum, &root,
- lostfound, &lostfound_str,
- 0, 0, S_IFDIR|0700, 0, NULL, NULL,
- (subvol_inum) { }, 0);
+ bch2_btree_iter_set_snapshot(&lostfound_iter, snapshot);
+ ret = bch2_btree_iter_traverse(&lostfound_iter);
+ if (ret)
+ goto err;
+
+ ret = bch2_dirent_create_snapshot(trans,
+ root_inode.bi_inum, snapshot, &root_hash_info,
+ mode_to_type(lostfound->bi_mode),
+ &lostfound_str,
+ lostfound->bi_inum,
+ &lostfound->bi_dir_offset,
+ BCH_HASH_SET_MUST_CREATE) ?:
+ bch2_inode_write_flags(trans, &lostfound_iter, lostfound,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE);
+err:
bch_err_msg(c, ret, "creating lost+found");
+ bch2_trans_iter_exit(trans, &lostfound_iter);
return ret;
}
-static int __reattach_inode(struct btree_trans *trans,
+static int reattach_inode(struct btree_trans *trans,
struct bch_inode_unpacked *inode,
u32 inode_snapshot)
{
char name_buf[20];
struct qstr name;
u64 dir_offset = 0;
- u32 subvol;
int ret;
- ret = __snapshot_lookup_subvol(trans, inode_snapshot, &subvol);
- if (ret)
- return ret;
-
- ret = lookup_lostfound(trans, subvol, &lostfound);
+ ret = lookup_lostfound(trans, inode_snapshot, &lostfound);
if (ret)
return ret;
snprintf(name_buf, sizeof(name_buf), "%llu", inode->bi_inum);
name = (struct qstr) QSTR(name_buf);
- ret = bch2_dirent_create(trans,
- (subvol_inum) {
- .subvol = subvol,
- .inum = lostfound.bi_inum,
- },
- &dir_hash,
- inode_d_type(inode),
- &name, inode->bi_inum, &dir_offset,
- BCH_HASH_SET_MUST_CREATE);
+ ret = bch2_dirent_create_snapshot(trans,
+ lostfound.bi_inum, inode_snapshot,
+ &dir_hash,
+ inode_d_type(inode),
+ &name, inode->bi_inum, &dir_offset,
+ BCH_HASH_SET_MUST_CREATE);
if (ret)
return ret;
return __write_inode(trans, inode, inode_snapshot);
}
-static int reattach_inode(struct btree_trans *trans,
- struct bch_inode_unpacked *inode,
- u32 inode_snapshot)
-{
- int ret = commit_do(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
- __reattach_inode(trans, inode, inode_snapshot));
- bch_err_msg(trans->c, ret, "reattaching inode %llu", inode->bi_inum);
- return ret;
-}
-
static int remove_backpointer(struct btree_trans *trans,
struct bch_inode_unpacked *inode)
{
return 0;
}
- if (u.bi_flags & BCH_INODE_unlinked &&
- c->sb.version >= bcachefs_metadata_version_deleted_inodes) {
+ if (u.bi_flags & BCH_INODE_unlinked) {
ret = check_inode_deleted_list(trans, k.k->p);
if (ret < 0)
return ret;
d = dirent_i_to_s_c(n);
}
- if (d.v->d_type == DT_SUBVOL &&
- target->bi_parent_subvol != le32_to_cpu(d.v->d_parent_subvol) &&
- (c->sb.version < bcachefs_metadata_version_subvol_dirent ||
- fsck_err(c, dirent_d_parent_subvol_wrong,
- "dirent has wrong d_parent_subvol field: got %u, should be %u",
- le32_to_cpu(d.v->d_parent_subvol),
- target->bi_parent_subvol))) {
+ if (fsck_err_on(d.v->d_type == DT_SUBVOL &&
+ target->bi_parent_subvol != le32_to_cpu(d.v->d_parent_subvol),
+ c, dirent_d_parent_subvol_wrong,
+ "dirent has wrong d_parent_subvol field: got %u, should be %u",
+ le32_to_cpu(d.v->d_parent_subvol),
+ target->bi_parent_subvol)) {
n = bch2_trans_kmalloc(trans, bkey_bytes(d.k));
ret = PTR_ERR_OR_ZERO(n);
if (ret)
u32 target_snapshot;
u64 target_inum;
- ret = __subvol_lookup(trans, target_subvol,
+ ret = subvol_lookup(trans, target_subvol,
&target_snapshot, &target_inum);
if (ret && !bch2_err_matches(ret, ENOENT))
goto err;
goto err;
}
- ret = __lookup_inode(trans, target_inum,
+ ret = lookup_inode(trans, target_inum,
&subvol_root, &target_snapshot);
if (ret && !bch2_err_matches(ret, ENOENT))
goto err;
u64 inum;
int ret;
- ret = __subvol_lookup(trans, BCACHEFS_ROOT_SUBVOL, &snapshot, &inum);
+ ret = subvol_lookup(trans, BCACHEFS_ROOT_SUBVOL, &snapshot, &inum);
if (ret && !bch2_err_matches(ret, ENOENT))
return ret;
goto err;
}
- ret = __lookup_inode(trans, BCACHEFS_ROOT_INO, &root_inode, &snapshot);
+ ret = lookup_inode(trans, BCACHEFS_ROOT_INO, &root_inode, &snapshot);
if (ret && !bch2_err_matches(ret, ENOENT))
return ret;
break;
}
- ret = lockrestart_do(trans,
- PTR_ERR_OR_ZERO((d = dirent_get_by_pos(trans, &dirent_iter,
- SPOS(inode->bi_dir, inode->bi_dir_offset,
- parent_snapshot))).k));
+ d = dirent_get_by_pos(trans, &dirent_iter,
+ SPOS(inode->bi_dir, inode->bi_dir_offset,
+ parent_snapshot));
+ ret = bkey_err(d.s_c);
if (ret && !bch2_err_matches(ret, ENOENT))
break;
ret = lookup_inode(trans, inode->bi_dir, inode, &snapshot);
if (ret) {
/* Should have been caught in dirents pass */
- bch_err(c, "error looking up parent directory: %i", ret);
+ if (!bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(c, "error looking up parent directory: %i", ret);
break;
}
pr_err("%llu:%u", i->inum, i->snapshot);
pr_err("%llu:%u", inode->bi_inum, snapshot);
- if (!fsck_err(c, dir_loop,
- "directory structure loop"))
+ if (!fsck_err(c, dir_loop, "directory structure loop"))
return 0;
- ret = commit_do(trans, NULL, NULL,
- BCH_TRANS_COMMIT_no_enospc,
- remove_backpointer(trans, inode));
- if (ret) {
- bch_err(c, "error removing dirent: %i", ret);
+ ret = remove_backpointer(trans, inode);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err_msg(c, ret, "removing dirent");
+ if (ret)
break;
- }
ret = reattach_inode(trans, inode, snapshot);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err_msg(c, ret, "reattaching inode %llu", inode->bi_inum);
+ break;
}
}
fsck_err:
*/
int bch2_check_directory_structure(struct bch_fs *c)
{
- struct btree_trans *trans = bch2_trans_get(c);
- struct btree_iter iter;
- struct bkey_s_c k;
struct bch_inode_unpacked u;
pathbuf path = { 0, };
int ret;
- for_each_btree_key_old(trans, iter, BTREE_ID_inodes, POS_MIN,
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
- if (!bkey_is_inode(k.k))
- continue;
+ ret = bch2_trans_run(c,
+ for_each_btree_key_commit(trans, iter, BTREE_ID_inodes, POS_MIN,
+ BTREE_ITER_INTENT|
+ BTREE_ITER_PREFETCH|
+ BTREE_ITER_ALL_SNAPSHOTS, k,
+ NULL, NULL, BCH_TRANS_COMMIT_no_enospc, ({
+ if (!bkey_is_inode(k.k))
+ continue;
- BUG_ON(bch2_inode_unpack(k, &u));
+ BUG_ON(bch2_inode_unpack(k, &u));
- if (u.bi_flags & BCH_INODE_unlinked)
- continue;
+ if (u.bi_flags & BCH_INODE_unlinked)
+ continue;
- ret = check_path(trans, &path, &u, iter.pos.snapshot);
- if (ret)
- break;
- }
- bch2_trans_iter_exit(trans, &iter);
- bch2_trans_put(trans);
+ check_path(trans, &path, &u, iter.pos.snapshot);
+ })));
darray_exit(&path);
bch_err_fn(c, ret);
projects / bcachefs-tools-debian / blobdiff