#include "bcachefs.h"
#include "bkey_buf.h"
#include "btree_update.h"
+#include "buckets.h"
#include "darray.h"
#include "dirent.h"
#include "error.h"
#define QSTR(n) { { { .len = strlen(n) } }, .name = n }
+/*
+ * XXX: this is handling transaction restarts without returning
+ * -BCH_ERR_transaction_restart_nested, this is not how we do things anymore:
+ */
static s64 bch2_count_inode_sectors(struct btree_trans *trans, u64 inum,
u32 snapshot)
{
u64 sectors = 0;
int ret;
- for_each_btree_key(trans, iter, BTREE_ID_extents,
- SPOS(inum, 0, snapshot), 0, k, ret) {
- if (k.k->p.inode != inum)
- break;
-
+ for_each_btree_key_upto(trans, iter, BTREE_ID_extents,
+ SPOS(inum, 0, snapshot),
+ POS(inum, U64_MAX),
+ 0, k, ret)
if (bkey_extent_is_allocation(k.k))
sectors += k.k->size;
- }
bch2_trans_iter_exit(trans, &iter);
u64 subdirs = 0;
int ret;
- for_each_btree_key(trans, iter, BTREE_ID_dirents,
- SPOS(inum, 0, snapshot), 0, k, ret) {
- if (k.k->p.inode != inum)
- break;
-
+ for_each_btree_key_upto(trans, iter, BTREE_ID_dirents,
+ SPOS(inum, 0, snapshot),
+ POS(inum, U64_MAX),
+ 0, k, ret) {
if (k.k->type != KEY_TYPE_dirent)
continue;
if (d.v->d_type == DT_DIR)
subdirs++;
}
-
bch2_trans_iter_exit(trans, &iter);
return ret ?: subdirs;
static int __snapshot_lookup_subvol(struct btree_trans *trans, u32 snapshot,
u32 *subvol)
{
- struct btree_iter iter;
- struct bkey_s_c k;
- int ret;
-
- bch2_trans_iter_init(trans, &iter, BTREE_ID_snapshots,
- POS(0, snapshot), 0);
- k = bch2_btree_iter_peek_slot(&iter);
- ret = bkey_err(k);
- if (ret)
- goto err;
-
- if (k.k->type != KEY_TYPE_snapshot) {
+ 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 fonud", snapshot);
- ret = -ENOENT;
- goto err;
- }
-
- *subvol = le32_to_cpu(bkey_s_c_to_snapshot(k).v->subvol);
-err:
- bch2_trans_iter_exit(trans, &iter);
return ret;
}
if (ret)
goto err;
- if (!k.k || bkey_cmp(k.k->p, POS(0, inode_nr))) {
- ret = -ENOENT;
+ if (!k.k || !bkey_eq(k.k->p, POS(0, inode_nr))) {
+ ret = -BCH_ERR_ENOENT_inode;
goto err;
}
ret = bch2_inode_unpack(k, inode);
err:
- if (ret && ret != -EINTR)
- bch_err(trans->c, "error %i fetching inode %llu",
- ret, inode_nr);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(trans->c, "error fetching inode %llu: %s",
+ inode_nr, bch2_err_str(ret));
bch2_trans_iter_exit(trans, &iter);
return ret;
}
struct bkey_s_c k;
int ret;
- bch2_trans_iter_init(trans, &iter, BTREE_ID_inodes,
- SPOS(0, inode_nr, *snapshot), 0);
- k = bch2_btree_iter_peek_slot(&iter);
+ k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_inodes,
+ SPOS(0, inode_nr, *snapshot), 0);
ret = bkey_err(k);
if (ret)
goto err;
ret = bkey_is_inode(k.k)
? bch2_inode_unpack(k, inode)
- : -ENOENT;
+ : -BCH_ERR_ENOENT_inode;
if (!ret)
*snapshot = iter.pos.snapshot;
err:
- if (ret && ret != -EINTR)
- bch_err(trans->c, "error %i fetching inode %llu:%u",
- ret, inode_nr, *snapshot);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(trans->c, "error fetching inode %llu:%u: %s",
+ inode_nr, *snapshot, bch2_err_str(ret));
bch2_trans_iter_exit(trans, &iter);
return ret;
}
struct bch_inode_unpacked *inode,
u32 snapshot)
{
- struct btree_iter iter;
- int ret;
+ struct bkey_inode_buf *inode_p =
+ bch2_trans_kmalloc(trans, sizeof(*inode_p));
- bch2_trans_iter_init(trans, &iter, BTREE_ID_inodes,
- SPOS(0, inode->bi_inum, snapshot),
- BTREE_ITER_INTENT);
+ if (IS_ERR(inode_p))
+ return PTR_ERR(inode_p);
- ret = bch2_btree_iter_traverse(&iter) ?:
- bch2_inode_write(trans, &iter, inode);
- bch2_trans_iter_exit(trans, &iter);
- return ret;
+ bch2_inode_pack(inode_p, inode);
+ inode_p->inode.k.p.snapshot = snapshot;
+
+ return bch2_btree_insert_nonextent(trans, BTREE_ID_inodes,
+ &inode_p->inode.k_i,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE);
}
static int write_inode(struct btree_trans *trans,
struct bch_inode_unpacked *inode,
u32 snapshot)
{
- int ret = __bch2_trans_do(trans, NULL, NULL,
+ int ret = commit_do(trans, NULL, NULL,
BTREE_INSERT_NOFAIL|
BTREE_INSERT_LAZY_RW,
__write_inode(trans, inode, snapshot));
if (ret)
- bch_err(trans->c, "error in fsck: error %i updating inode", ret);
+ bch_err(trans->c, "error in fsck: error updating inode: %s",
+ bch2_err_str(ret));
return ret;
}
static int fsck_inode_rm(struct btree_trans *trans, u64 inum, u32 snapshot)
{
+ struct bch_fs *c = trans->c;
struct btree_iter iter = { NULL };
struct bkey_i_inode_generation delete;
struct bch_inode_unpacked inode_u;
struct bkey_s_c k;
int ret;
- ret = bch2_btree_delete_range_trans(trans, BTREE_ID_extents,
- SPOS(inum, 0, snapshot),
- SPOS(inum, U64_MAX, snapshot),
- 0, NULL) ?:
- bch2_btree_delete_range_trans(trans, BTREE_ID_dirents,
- SPOS(inum, 0, snapshot),
- SPOS(inum, U64_MAX, snapshot),
- 0, NULL) ?:
- bch2_btree_delete_range_trans(trans, BTREE_ID_xattrs,
- SPOS(inum, 0, snapshot),
- SPOS(inum, U64_MAX, snapshot),
- 0, NULL);
+ do {
+ ret = bch2_btree_delete_range_trans(trans, BTREE_ID_extents,
+ SPOS(inum, 0, snapshot),
+ SPOS(inum, U64_MAX, snapshot),
+ 0, NULL) ?:
+ bch2_btree_delete_range_trans(trans, BTREE_ID_dirents,
+ SPOS(inum, 0, snapshot),
+ SPOS(inum, U64_MAX, snapshot),
+ 0, NULL) ?:
+ bch2_btree_delete_range_trans(trans, BTREE_ID_xattrs,
+ SPOS(inum, 0, snapshot),
+ SPOS(inum, U64_MAX, snapshot),
+ 0, NULL);
+ } while (ret == -BCH_ERR_transaction_restart_nested);
if (ret)
goto err;
retry:
bch2_trans_begin(trans);
- bch2_trans_iter_init(trans, &iter, BTREE_ID_inodes,
- SPOS(0, inum, snapshot), BTREE_ITER_INTENT);
- k = bch2_btree_iter_peek_slot(&iter);
-
+ k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_inodes,
+ SPOS(0, inum, snapshot), BTREE_ITER_INTENT);
ret = bkey_err(k);
if (ret)
goto err;
if (!bkey_is_inode(k.k)) {
- bch2_fs_inconsistent(trans->c,
+ bch2_fs_inconsistent(c,
"inode %llu:%u not found when deleting",
inum, snapshot);
ret = -EIO;
bch2_inode_unpack(k, &inode_u);
/* Subvolume root? */
- if (inode_u.bi_subvol) {
- ret = bch2_subvolume_delete(trans, inode_u.bi_subvol);
- if (ret)
- goto err;
- }
+ if (inode_u.bi_subvol)
+ bch_warn(c, "deleting inode %llu marked as unlinked, but also a subvolume root!?", inode_u.bi_inum);
bkey_inode_generation_init(&delete.k_i);
delete.k.p = iter.pos;
BTREE_INSERT_NOFAIL);
err:
bch2_trans_iter_exit(trans, &iter);
- if (ret == -EINTR)
+ if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
goto retry;
- return ret;
+ return ret ?: -BCH_ERR_transaction_restart_nested;
}
static int __remove_dirent(struct btree_trans *trans, struct bpos pos)
BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE);
bch2_trans_iter_exit(trans, &iter);
err:
- if (ret && ret != -EINTR)
- bch_err(c, "error %i from __remove_dirent()", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err_fn(c, ret);
return ret;
}
ret = __lookup_dirent(trans, root_hash_info, root_inum,
&lostfound_str, &inum, &d_type);
- if (ret == -ENOENT) {
+ if (bch2_err_matches(ret, ENOENT)) {
bch_notice(c, "creating lost+found");
goto create_lostfound;
}
- if (ret && ret != -EINTR)
- bch_err(c, "error looking up lost+found: %i", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(c, "error looking up lost+found: %s", bch2_err_str(ret));
if (ret)
return ret;
}
/*
- * The check_dirents pass has already run, dangling dirents
+ * The bch2_check_dirents pass has already run, dangling dirents
* shouldn't exist here:
*/
return __lookup_inode(trans, inum, lostfound, &snapshot);
lostfound, &lostfound_str,
0, 0, S_IFDIR|0700, 0, NULL, NULL,
(subvol_inum) { }, 0);
- if (ret && ret != -EINTR)
- bch_err(c, "error creating lost+found: %i", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(c, "error creating lost+found: %s", bch2_err_str(ret));
return ret;
}
struct bch_inode_unpacked *inode,
u32 inode_snapshot)
{
- int ret = __bch2_trans_do(trans, NULL, NULL,
+ int ret = commit_do(trans, NULL, NULL,
BTREE_INSERT_LAZY_RW|
BTREE_INSERT_NOFAIL,
__reattach_inode(trans, inode, inode_snapshot));
if (ret) {
- bch_err(trans->c, "error %i reattaching inode %llu",
- ret, inode->bi_inum);
+ bch_err(trans->c, "error reattaching inode %llu: %s",
+ inode->bi_inum, bch2_err_str(ret));
return ret;
}
struct bch_inode_unpacked *inode)
{
struct btree_iter iter;
- struct bkey_s_c k;
+ struct bkey_s_c_dirent d;
int ret;
- bch2_trans_iter_init(trans, &iter, BTREE_ID_dirents,
- POS(inode->bi_dir, inode->bi_dir_offset), 0);
- k = bch2_btree_iter_peek_slot(&iter);
- ret = bkey_err(k);
- if (ret)
- goto out;
- if (k.k->type != KEY_TYPE_dirent) {
- ret = -ENOENT;
- goto out;
+ d = bch2_bkey_get_iter_typed(trans, &iter, BTREE_ID_dirents,
+ POS(inode->bi_dir, inode->bi_dir_offset), 0,
+ dirent);
+ ret = bkey_err(d) ?:
+ __remove_dirent(trans, d.k->p);
+ bch2_trans_iter_exit(trans, &iter);
+ return ret;
+}
+
+struct snapshots_seen_entry {
+ u32 id;
+ u32 equiv;
+};
+
+struct snapshots_seen {
+ struct bpos pos;
+ DARRAY(struct snapshots_seen_entry) ids;
+};
+
+static inline void snapshots_seen_exit(struct snapshots_seen *s)
+{
+ darray_exit(&s->ids);
+}
+
+static inline void snapshots_seen_init(struct snapshots_seen *s)
+{
+ memset(s, 0, sizeof(*s));
+}
+
+static int snapshots_seen_add(struct bch_fs *c, struct snapshots_seen *s, u32 id)
+{
+ struct snapshots_seen_entry *i, n = { id, id };
+ int ret;
+
+ darray_for_each(s->ids, i) {
+ if (n.equiv < i->equiv)
+ break;
+
+ if (i->equiv == n.equiv) {
+ bch_err(c, "%s(): adding duplicate snapshot", __func__);
+ return -EINVAL;
+ }
}
- ret = __remove_dirent(trans, k.k->p);
-out:
- bch2_trans_iter_exit(trans, &iter);
+ ret = darray_insert_item(&s->ids, i - s->ids.data, n);
+ if (ret)
+ bch_err(c, "error reallocating snapshots_seen table (size %zu)",
+ s->ids.size);
return ret;
}
-static int snapshots_seen_update(struct bch_fs *c, struct snapshots_seen *s, struct bpos pos)
+static int snapshots_seen_update(struct bch_fs *c, struct snapshots_seen *s,
+ enum btree_id btree_id, struct bpos pos)
{
- pos.snapshot = snapshot_t(c, pos.snapshot)->equiv;
+ struct snapshots_seen_entry *i, n = {
+ .id = pos.snapshot,
+ .equiv = bch2_snapshot_equiv(c, pos.snapshot),
+ };
+ int ret = 0;
- if (bkey_cmp(s->pos, pos))
+ if (!bkey_eq(s->pos, pos))
s->ids.nr = 0;
+
+ pos.snapshot = n.equiv;
s->pos = pos;
- /* Might get called multiple times due to lock restarts */
- if (s->ids.nr && s->ids.data[s->ids.nr - 1] == pos.snapshot)
- return 0;
+ darray_for_each(s->ids, i)
+ if (i->equiv == n.equiv) {
+ if (fsck_err_on(i->id != n.id, c,
+ "snapshot deletion did not run correctly:\n"
+ " duplicate keys in btree %s at %llu:%llu snapshots %u, %u (equiv %u)\n",
+ bch2_btree_ids[btree_id],
+ pos.inode, pos.offset,
+ i->id, n.id, n.equiv))
+ return -BCH_ERR_need_snapshot_cleanup;
+
+ return 0;
+ }
- return snapshots_seen_add(c, s, pos.snapshot);
+ ret = darray_push(&s->ids, n);
+ if (ret)
+ bch_err(c, "error reallocating snapshots_seen table (size %zu)",
+ s->ids.size);
+fsck_err:
+ return ret;
}
/**
u32 id, u32 ancestor)
{
ssize_t i;
+ u32 top = seen->ids.nr ? seen->ids.data[seen->ids.nr - 1].equiv : 0;
BUG_ON(id > ancestor);
-
- id = snapshot_t(c, id)->equiv;
- ancestor = snapshot_t(c, ancestor)->equiv;
+ BUG_ON(!bch2_snapshot_is_equiv(c, id));
+ BUG_ON(!bch2_snapshot_is_equiv(c, ancestor));
/* @ancestor should be the snapshot most recently added to @seen */
- BUG_ON(!seen->ids.nr || seen->ids.data[seen->ids.nr - 1] != ancestor);
- BUG_ON(seen->pos.snapshot != ancestor);
+ BUG_ON(ancestor != seen->pos.snapshot);
+ BUG_ON(ancestor != top);
if (id == ancestor)
return true;
return false;
for (i = seen->ids.nr - 2;
- i >= 0 && seen->ids.data[i] >= id;
+ i >= 0 && seen->ids.data[i].equiv >= id;
--i)
- if (bch2_snapshot_is_ancestor(c, id, seen->ids.data[i]) &&
- bch2_snapshot_is_ancestor(c, seen->ids.data[i], ancestor))
+ if (bch2_snapshot_is_ancestor(c, id, seen->ids.data[i].equiv) &&
+ bch2_snapshot_is_ancestor(c, seen->ids.data[i].equiv, ancestor))
return false;
return true;
: bch2_snapshot_is_ancestor(c, src, dst);
}
-#define for_each_visible_inode(_c, _s, _w, _snapshot, _i) \
- for (_i = (_w)->inodes.data; _i < (_w)->inodes.data + (_w)->inodes.nr && (_i)->snapshot <= (_snapshot); _i++)\
+static int ref_visible2(struct bch_fs *c,
+ u32 src, struct snapshots_seen *src_seen,
+ u32 dst, struct snapshots_seen *dst_seen)
+{
+ src = bch2_snapshot_equiv(c, src);
+ dst = bch2_snapshot_equiv(c, dst);
+
+ if (dst > src) {
+ swap(dst, src);
+ swap(dst_seen, src_seen);
+ }
+ return key_visible_in_snapshot(c, src_seen, dst, src);
+}
+
+#define for_each_visible_inode(_c, _s, _w, _snapshot, _i) \
+ for (_i = (_w)->inodes.data; _i < (_w)->inodes.data + (_w)->inodes.nr && \
+ (_i)->snapshot <= (_snapshot); _i++) \
if (key_visible_in_snapshot(_c, _s, _i->snapshot, _snapshot))
struct inode_walker_entry {
return darray_push(&w->inodes, ((struct inode_walker_entry) {
.inode = u,
- .snapshot = snapshot_t(c, inode.k->p.snapshot)->equiv,
+ .snapshot = bch2_snapshot_equiv(c, inode.k->p.snapshot),
}));
}
-static int __walk_inode(struct btree_trans *trans,
- struct inode_walker *w, struct bpos pos)
+static int get_inodes_all_snapshots(struct btree_trans *trans,
+ struct inode_walker *w, u64 inum)
{
struct bch_fs *c = trans->c;
struct btree_iter iter;
struct bkey_s_c k;
- unsigned i, ancestor_pos;
+ u32 restart_count = trans->restart_count;
int ret;
- pos.snapshot = snapshot_t(c, pos.snapshot)->equiv;
-
- if (pos.inode == w->cur_inum) {
- w->first_this_inode = false;
- goto lookup_snapshot;
- }
+ if (w->cur_inum == inum)
+ return 0;
w->inodes.nr = 0;
- for_each_btree_key(trans, iter, BTREE_ID_inodes, POS(0, pos.inode),
+ for_each_btree_key(trans, iter, BTREE_ID_inodes, POS(0, inum),
BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
- if (k.k->p.offset != pos.inode)
+ if (k.k->p.offset != inum)
break;
if (bkey_is_inode(k.k))
if (ret)
return ret;
- w->cur_inum = pos.inode;
+ w->cur_inum = inum;
w->first_this_inode = true;
-lookup_snapshot:
- for (i = 0; i < w->inodes.nr; i++)
- if (bch2_snapshot_is_ancestor(c, pos.snapshot, w->inodes.data[i].snapshot))
+
+ if (trans_was_restarted(trans, restart_count))
+ return -BCH_ERR_transaction_restart_nested;
+
+ return 0;
+}
+
+static struct inode_walker_entry *
+lookup_inode_for_snapshot(struct bch_fs *c,
+ struct inode_walker *w, u32 snapshot)
+{
+ struct inode_walker_entry *i;
+
+ snapshot = bch2_snapshot_equiv(c, snapshot);
+
+ darray_for_each(w->inodes, i)
+ if (bch2_snapshot_is_ancestor(c, snapshot, i->snapshot))
goto found;
- return INT_MAX;
+
+ return NULL;
found:
- BUG_ON(pos.snapshot > w->inodes.data[i].snapshot);
+ BUG_ON(snapshot > i->snapshot);
- if (pos.snapshot != w->inodes.data[i].snapshot) {
- ancestor_pos = i;
+ if (snapshot != i->snapshot) {
+ struct inode_walker_entry new = *i;
+ int ret;
- while (i && w->inodes.data[i - 1].snapshot > pos.snapshot)
+ new.snapshot = snapshot;
+ new.count = 0;
+
+ bch_info(c, "have key for inode %llu:%u but have inode in ancestor snapshot %u",
+ w->cur_inum, snapshot, i->snapshot);
+
+ while (i > w->inodes.data && i[-1].snapshot > snapshot)
--i;
- ret = darray_insert_item(&w->inodes, i, w->inodes.data[ancestor_pos]);
+ ret = darray_insert_item(&w->inodes, i - w->inodes.data, new);
if (ret)
- return ret;
-
- w->inodes.data[i].snapshot = pos.snapshot;
- w->inodes.data[i].count = 0;
+ return ERR_PTR(ret);
}
return i;
}
+static struct inode_walker_entry *walk_inode(struct btree_trans *trans,
+ struct inode_walker *w, struct bpos pos)
+{
+ int ret = get_inodes_all_snapshots(trans, w, pos.inode);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return lookup_inode_for_snapshot(trans->c, w, pos.snapshot);
+}
+
static int __get_visible_inodes(struct btree_trans *trans,
struct inode_walker *w,
struct snapshots_seen *s,
w->inodes.nr = 0;
- for_each_btree_key(trans, iter, BTREE_ID_inodes, POS(0, inum),
+ for_each_btree_key_norestart(trans, iter, BTREE_ID_inodes, POS(0, inum),
BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
+ u32 equiv = bch2_snapshot_equiv(c, k.k->p.snapshot);
+
if (k.k->p.offset != inum)
break;
- if (!bkey_is_inode(k.k))
+ if (!ref_visible(c, s, s->pos.snapshot, equiv))
continue;
- if (ref_visible(c, s, s->pos.snapshot, k.k->p.snapshot)) {
+ if (bkey_is_inode(k.k))
add_inode(c, w, k);
- if (k.k->p.snapshot >= s->pos.snapshot)
- break;
- }
+
+ if (equiv >= s->pos.snapshot)
+ break;
}
bch2_trans_iter_exit(trans, &iter);
struct printbuf buf = PRINTBUF;
int ret = 0;
- if (mustfix_fsck_err_on(!snapshot_t(c, k.k->p.snapshot)->equiv, c,
+ if (mustfix_fsck_err_on(!bch2_snapshot_equiv(c, k.k->p.snapshot), c,
"key in missing snapshot: %s",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
ret = bch2_btree_delete_at(trans, iter,
struct bch_hash_info *hash_info,
struct btree_iter *k_iter, struct bkey_s_c k)
{
- bch_err(trans->c, "hash_redo_key() not implemented yet");
- return -EINVAL;
-#if 0
struct bkey_i *delete;
struct bkey_i *tmp;
if (IS_ERR(delete))
return PTR_ERR(delete);
- tmp = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ tmp = bch2_bkey_make_mut_noupdate(trans, k);
if (IS_ERR(tmp))
return PTR_ERR(tmp);
- bkey_reassemble(tmp, k);
-
bkey_init(&delete->k);
delete->k.p = k_iter->pos;
return bch2_btree_iter_traverse(k_iter) ?:
bch2_trans_update(trans, k_iter, delete, 0) ?:
- bch2_hash_set(trans, desc, hash_info, k_iter->pos.inode, tmp, 0);
-#endif
+ bch2_hash_set_snapshot(trans, desc, hash_info,
+ (subvol_inum) { 0, k.k->p.inode },
+ k.k->p.snapshot, tmp,
+ BCH_HASH_SET_MUST_CREATE,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE) ?:
+ bch2_trans_commit(trans, NULL, NULL,
+ BTREE_INSERT_NOFAIL|
+ BTREE_INSERT_LAZY_RW);
}
static int hash_check_key(struct btree_trans *trans,
goto bad_hash;
for_each_btree_key_norestart(trans, iter, desc.btree_id,
- POS(hash_k.k->p.inode, hash),
+ SPOS(hash_k.k->p.inode, hash, hash_k.k->p.snapshot),
BTREE_ITER_SLOTS, k, ret) {
- if (!bkey_cmp(k.k->p, hash_k.k->p))
+ if (bkey_eq(k.k->p, hash_k.k->p))
break;
if (fsck_err_on(k.k->type == desc.key_type &&
printbuf_exit(&buf);
return ret;
bad_hash:
- if (fsck_err(c, "hash table key at wrong offset: btree %s inode %llu offset %llu, "
- "hashed to %llu\n%s",
+ if (fsck_err(c, "hash table key at wrong offset: btree %s inode %llu offset %llu, hashed to %llu\n%s",
bch2_btree_ids[desc.btree_id], hash_k.k->p.inode, hash_k.k->p.offset, hash,
(printbuf_reset(&buf),
- bch2_bkey_val_to_text(&buf, c, hash_k), buf.buf)) == FSCK_ERR_IGNORE)
- return 0;
-
- ret = hash_redo_key(trans, desc, hash_info, k_iter, hash_k);
- if (ret) {
- bch_err(c, "hash_redo_key err %i", ret);
- return ret;
+ bch2_bkey_val_to_text(&buf, c, hash_k), buf.buf))) {
+ ret = hash_redo_key(trans, desc, hash_info, k_iter, hash_k);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(c, "hash_redo_key err %s", bch2_err_str(ret));
+ if (ret)
+ return ret;
+ ret = -BCH_ERR_transaction_restart_nested;
}
- ret = -EINTR;
fsck_err:
goto out;
}
static int check_inode(struct btree_trans *trans,
struct btree_iter *iter,
+ struct bkey_s_c k,
struct bch_inode_unpacked *prev,
+ struct snapshots_seen *s,
bool full)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
struct bch_inode_unpacked u;
bool do_update = false;
int ret;
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- return 0;
-
- ret = bkey_err(k);
- if (ret)
- return ret;
-
ret = check_key_has_snapshot(trans, iter, k);
if (ret < 0)
goto err;
if (ret)
return 0;
+ ret = snapshots_seen_update(c, s, iter->btree_id, k.k->p);
+ if (ret)
+ goto err;
+
/*
* if snapshot id isn't a leaf node, skip it - deletion in
* particular is not atomic, so on the internal snapshot nodes
bch2_fs_lazy_rw(c);
ret = fsck_inode_rm(trans, u.bi_inum, iter->pos.snapshot);
- if (ret)
- bch_err(c, "error in fsck: error %i while deleting inode", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(c, "error in fsck: error while deleting inode: %s",
+ bch2_err_str(ret));
return ret;
}
iter->pos.snapshot),
POS(u.bi_inum, U64_MAX),
0, NULL);
- if (ret) {
- bch_err(c, "error in fsck: error %i truncating inode", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err(c, "error in fsck: error truncating inode: %s",
+ bch2_err_str(ret));
+ if (ret)
return ret;
- }
/*
* We truncated without our normal sector accounting hook, just
sectors = bch2_count_inode_sectors(trans, u.bi_inum, iter->pos.snapshot);
if (sectors < 0) {
- bch_err(c, "error in fsck: error %i recounting inode sectors",
- (int) sectors);
+ bch_err(c, "error in fsck: error recounting inode sectors: %s",
+ bch2_err_str(sectors));
return sectors;
}
}
if (do_update) {
- ret = write_inode(trans, &u, iter->pos.snapshot);
+ ret = __write_inode(trans, &u, iter->pos.snapshot);
if (ret)
- bch_err(c, "error in fsck: error %i "
- "updating inode", ret);
+ bch_err(c, "error in fsck: error updating inode: %s",
+ bch2_err_str(ret));
}
err:
fsck_err:
if (ret)
- bch_err(c, "error %i from check_inode()", ret);
+ bch_err_fn(c, ret);
return ret;
}
noinline_for_stack
-static int check_inodes(struct bch_fs *c, bool full)
+int bch2_check_inodes(struct bch_fs *c)
{
+ bool full = c->opts.fsck;
struct btree_trans trans;
struct btree_iter iter;
struct bch_inode_unpacked prev = { 0 };
- int ret;
-
- bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
-
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_inodes, POS_MIN,
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- do {
- ret = __bch2_trans_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_inode(&trans, &iter, &prev, full));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
-
- bch2_trans_exit(&trans);
- if (ret)
- bch_err(c, "error %i from check_inodes()", ret);
- return ret;
-}
-
-static int check_subvol(struct btree_trans *trans,
- struct btree_iter *iter)
-{
+ struct snapshots_seen s;
struct bkey_s_c k;
- struct bkey_s_c_subvolume subvol;
- int ret;
-
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- return 0;
-
- ret = bkey_err(k);
- if (ret)
- return ret;
-
- if (k.k->type != KEY_TYPE_subvolume)
- return 0;
-
- subvol = bkey_s_c_to_subvolume(k);
-
- if (BCH_SUBVOLUME_UNLINKED(subvol.v)) {
- ret = bch2_subvolume_delete(trans, iter->pos.offset);
- if (ret && ret != -EINTR)
- bch_err(trans->c, "error deleting subvolume %llu: %i",
- iter->pos.offset, ret);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-noinline_for_stack
-static int check_subvols(struct bch_fs *c)
-{
- struct btree_trans trans;
- struct btree_iter iter;
int ret;
+ snapshots_seen_init(&s);
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_subvolumes,
- POS_MIN,
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH);
-
- do {
- ret = __bch2_trans_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_subvol(&trans, &iter));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_inodes,
+ POS_MIN,
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS, k,
+ NULL, NULL, BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_inode(&trans, &iter, k, &prev, &s, full));
bch2_trans_exit(&trans);
+ snapshots_seen_exit(&s);
+ if (ret)
+ bch_err_fn(c, ret);
return ret;
}
struct btree_iter *iter,
struct bpos pos)
{
- struct bkey_s_c k;
- int ret;
-
- bch2_trans_iter_init(trans, iter, BTREE_ID_dirents, pos, 0);
- k = bch2_btree_iter_peek_slot(iter);
- ret = bkey_err(k);
- if (!ret && k.k->type != KEY_TYPE_dirent)
- ret = -ENOENT;
- if (ret) {
- bch2_trans_iter_exit(trans, iter);
- return (struct bkey_s_c_dirent) { .k = ERR_PTR(ret) };
- }
-
- return bkey_s_c_to_dirent(k);
+ return bch2_bkey_get_iter_typed(trans, iter, BTREE_ID_dirents, pos, 0, dirent);
}
static bool inode_points_to_dirent(struct bch_inode_unpacked *inode,
d = dirent_get_by_pos(trans, &iter,
SPOS(inode->bi_dir, inode->bi_dir_offset, snapshot));
- ret = bkey_err(d.s_c);
+ ret = bkey_err(d);
if (ret)
- return ret == -ENOENT ? 0 : ret;
+ return bch2_err_matches(ret, ENOENT) ? 0 : ret;
ret = dirent_points_to_inode(d, inode);
bch2_trans_iter_exit(trans, &iter);
{
struct bch_fs *c = trans->c;
struct inode_walker_entry *i;
- int ret = 0, ret2 = 0;
+ u32 restart_count = trans->restart_count;
+ int ret = 0;
s64 count2;
darray_for_each(w->inodes, i) {
if (i->inode.bi_sectors == i->count)
continue;
- count2 = lockrestart_do(trans,
- bch2_count_inode_sectors(trans, w->cur_inum, i->snapshot));
+ count2 = bch2_count_inode_sectors(trans, w->cur_inum, i->snapshot);
if (i->count != count2) {
bch_err(c, "fsck counted i_sectors wrong: got %llu should be %llu",
if (fsck_err_on(!(i->inode.bi_flags & BCH_INODE_I_SECTORS_DIRTY), c,
"inode %llu:%u has incorrect i_sectors: got %llu, should be %llu",
w->cur_inum, i->snapshot,
- i->inode.bi_sectors, i->count) == FSCK_ERR_IGNORE)
+ i->inode.bi_sectors, i->count)) {
+ i->inode.bi_sectors = i->count;
+ ret = write_inode(trans, &i->inode, i->snapshot);
+ if (ret)
+ break;
+ }
+ }
+fsck_err:
+ if (ret)
+ bch_err_fn(c, ret);
+ if (!ret && trans_was_restarted(trans, restart_count))
+ ret = -BCH_ERR_transaction_restart_nested;
+ return ret;
+}
+
+struct extent_end {
+ u32 snapshot;
+ u64 offset;
+ struct snapshots_seen seen;
+};
+
+typedef DARRAY(struct extent_end) extent_ends;
+
+static int get_print_extent(struct btree_trans *trans, struct bpos pos, struct printbuf *out)
+{
+ struct btree_iter iter;
+ struct bkey_s_c k;
+ int ret;
+
+ k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_extents, pos,
+ BTREE_ITER_SLOTS|
+ BTREE_ITER_ALL_SNAPSHOTS|
+ BTREE_ITER_NOT_EXTENTS);
+ ret = bkey_err(k);
+ if (ret)
+ return ret;
+
+ bch2_bkey_val_to_text(out, trans->c, k);
+ bch2_trans_iter_exit(trans, &iter);
+ return 0;
+}
+
+static int check_overlapping_extents(struct btree_trans *trans,
+ struct snapshots_seen *seen,
+ extent_ends *extent_ends,
+ struct bkey_s_c k,
+ struct btree_iter *iter)
+{
+ struct bch_fs *c = trans->c;
+ struct extent_end *i;
+ struct printbuf buf = PRINTBUF;
+ int ret = 0;
+
+ darray_for_each(*extent_ends, i) {
+ /* duplicate, due to transaction restart: */
+ if (i->offset == k.k->p.offset &&
+ i->snapshot == k.k->p.snapshot)
continue;
- i->inode.bi_sectors = i->count;
- ret = write_inode(trans, &i->inode, i->snapshot);
+ if (!ref_visible2(c,
+ k.k->p.snapshot, seen,
+ i->snapshot, &i->seen))
+ continue;
+
+ if (i->offset <= bkey_start_offset(k.k))
+ continue;
+
+ printbuf_reset(&buf);
+ prt_str(&buf, "overlapping extents:\n ");
+ bch2_bkey_val_to_text(&buf, c, k);
+ prt_str(&buf, "\n ");
+
+ ret = get_print_extent(trans, SPOS(k.k->p.inode, i->offset, i->snapshot), &buf);
if (ret)
break;
- ret2 = -EINTR;
+
+ if (fsck_err(c, "%s", buf.buf)) {
+ struct bkey_i *update = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ if ((ret = PTR_ERR_OR_ZERO(update)))
+ goto err;
+ bkey_reassemble(update, k);
+ ret = bch2_trans_update_extent(trans, iter, update,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE);
+ if (ret)
+ goto err;
+ }
}
+err:
fsck_err:
- if (ret)
- bch_err(c, "error %i from check_i_sectors()", ret);
- return ret ?: ret2;
+ printbuf_exit(&buf);
+ return ret;
+}
+
+static int extent_ends_at(extent_ends *extent_ends,
+ struct snapshots_seen *seen,
+ struct bkey_s_c k)
+{
+ struct extent_end *i, n = (struct extent_end) {
+ .snapshot = k.k->p.snapshot,
+ .offset = k.k->p.offset,
+ .seen = *seen,
+ };
+
+ n.seen.ids.data = kmemdup(seen->ids.data,
+ sizeof(seen->ids.data[0]) * seen->ids.size,
+ GFP_KERNEL);
+ if (!n.seen.ids.data)
+ return -BCH_ERR_ENOMEM_fsck_extent_ends_at;
+
+ darray_for_each(*extent_ends, i) {
+ if (i->snapshot == k.k->p.snapshot) {
+ snapshots_seen_exit(&i->seen);
+ *i = n;
+ return 0;
+ }
+
+ if (i->snapshot >= k.k->p.snapshot)
+ break;
+ }
+
+ return darray_insert_item(extent_ends, i - extent_ends->data, n);
+}
+
+static void extent_ends_reset(extent_ends *extent_ends)
+{
+ struct extent_end *i;
+
+ darray_for_each(*extent_ends, i)
+ snapshots_seen_exit(&i->seen);
+
+ extent_ends->nr = 0;
}
static int check_extent(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k,
struct inode_walker *inode,
- struct snapshots_seen *s)
+ struct snapshots_seen *s,
+ extent_ends *extent_ends)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
struct inode_walker_entry *i;
struct printbuf buf = PRINTBUF;
+ struct bpos equiv;
int ret = 0;
-peek:
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- goto out;
-
- ret = bkey_err(k);
- if (ret)
- goto err;
ret = check_key_has_snapshot(trans, iter, k);
if (ret) {
goto out;
}
- ret = snapshots_seen_update(c, s, k.k->p);
+ equiv = k.k->p;
+ equiv.snapshot = bch2_snapshot_equiv(c, k.k->p.snapshot);
+
+ ret = snapshots_seen_update(c, s, iter->btree_id, k.k->p);
if (ret)
goto err;
ret = check_i_sectors(trans, inode);
if (ret)
goto err;
- }
- if (!iter->path->should_be_locked) {
- /*
- * hack: check_i_sectors may have handled a transaction restart,
- * it shouldn't be but we need to fix the new i_sectors check
- * code and delete the old bch2_count_inode_sectors() first
- */
- goto peek;
+ extent_ends_reset(extent_ends);
}
-#if 0
- if (bkey_cmp(prev.k->k.p, bkey_start_pos(k.k)) > 0) {
- char buf1[200];
- char buf2[200];
- bch2_bkey_val_to_text(&PBUF(buf1), c, bkey_i_to_s_c(prev.k));
- bch2_bkey_val_to_text(&PBUF(buf2), c, k);
+ BUG_ON(!iter->path->should_be_locked);
- if (fsck_err(c, "overlapping extents:\n%s\n%s", buf1, buf2)) {
- ret = fix_overlapping_extent(trans, k, prev.k->k.p) ?: -EINTR;
- goto out;
- }
- }
-#endif
- ret = __walk_inode(trans, inode, k.k->p);
- if (ret < 0)
+ ret = check_overlapping_extents(trans, s, extent_ends, k, iter);
+ if (ret)
+ goto err;
+
+ ret = extent_ends_at(extent_ends, s, k);
+ if (ret)
+ goto err;
+
+ i = walk_inode(trans, inode, equiv);
+ ret = PTR_ERR_OR_ZERO(i);
+ if (ret)
goto err;
- if (fsck_err_on(ret == INT_MAX, c,
+ if (fsck_err_on(!i, c,
"extent in missing inode:\n %s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
goto out;
}
- if (ret == INT_MAX) {
- ret = 0;
+ if (!i)
goto out;
- }
-
- i = inode->inodes.data + ret;
- ret = 0;
if (fsck_err_on(!S_ISREG(i->inode.bi_mode) &&
!S_ISLNK(i->inode.bi_mode), c,
goto out;
}
- if (!bch2_snapshot_internal_node(c, k.k->p.snapshot)) {
- for_each_visible_inode(c, s, inode, k.k->p.snapshot, i) {
- if (fsck_err_on(!(i->inode.bi_flags & BCH_INODE_I_SIZE_DIRTY) &&
- k.k->type != KEY_TYPE_reservation &&
- k.k->p.offset > round_up(i->inode.bi_size, block_bytes(c)) >> 9, c,
- "extent type %u offset %llu past end of inode %llu, i_size %llu",
- k.k->type, k.k->p.offset, k.k->p.inode, i->inode.bi_size)) {
- bch2_fs_lazy_rw(c);
- ret = bch2_btree_delete_range_trans(trans, BTREE_ID_extents,
- SPOS(k.k->p.inode, round_up(i->inode.bi_size, block_bytes(c)) >> 9,
- k.k->p.snapshot),
- POS(k.k->p.inode, U64_MAX),
- 0, NULL) ?: -EINTR;
- goto out;
+ /*
+ * Check inodes in reverse order, from oldest snapshots to newest, so
+ * that we emit the fewest number of whiteouts necessary:
+ */
+ for (i = inode->inodes.data + inode->inodes.nr - 1;
+ i >= inode->inodes.data;
+ --i) {
+ if (i->snapshot > equiv.snapshot ||
+ !key_visible_in_snapshot(c, s, i->snapshot, equiv.snapshot))
+ continue;
+
+ if (fsck_err_on(!(i->inode.bi_flags & BCH_INODE_I_SIZE_DIRTY) &&
+ k.k->p.offset > round_up(i->inode.bi_size, block_bytes(c)) >> 9 &&
+ !bkey_extent_is_reservation(k), c,
+ "extent type past end of inode %llu:%u, i_size %llu\n %s",
+ i->inode.bi_inum, i->snapshot, i->inode.bi_size,
+ (bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
+ struct btree_iter iter2;
+
+ bch2_trans_copy_iter(&iter2, iter);
+ bch2_btree_iter_set_snapshot(&iter2, i->snapshot);
+ ret = bch2_btree_iter_traverse(&iter2) ?:
+ bch2_btree_delete_at(trans, &iter2,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE);
+ bch2_trans_iter_exit(trans, &iter2);
+ if (ret)
+ goto err;
+
+ if (i->snapshot != equiv.snapshot) {
+ ret = snapshots_seen_add(c, s, i->snapshot);
+ if (ret)
+ goto err;
}
}
}
if (bkey_extent_is_allocation(k.k))
- for_each_visible_inode(c, s, inode, k.k->p.snapshot, i)
+ for_each_visible_inode(c, s, inode, equiv.snapshot, i)
i->count += k.k->size;
#if 0
bch2_bkey_buf_reassemble(&prev, c, k);
fsck_err:
printbuf_exit(&buf);
- if (ret && ret != -EINTR)
- bch_err(c, "error %i from check_extent()", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err_fn(c, ret);
return ret;
}
* Walk extents: verify that extents have a corresponding S_ISREG inode, and
* that i_size an i_sectors are consistent
*/
-noinline_for_stack
-static int check_extents(struct bch_fs *c)
+int bch2_check_extents(struct bch_fs *c)
{
struct inode_walker w = inode_walker_init();
struct snapshots_seen s;
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
+ extent_ends extent_ends = { 0 };
+ struct disk_reservation res = { 0 };
int ret = 0;
-#if 0
- struct bkey_buf prev;
- bch2_bkey_buf_init(&prev);
- prev.k->k = KEY(0, 0, 0);
-#endif
snapshots_seen_init(&s);
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch_verbose(c, "checking extents");
-
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_extents,
- POS(BCACHEFS_ROOT_INO, 0),
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_extents,
+ POS(BCACHEFS_ROOT_INO, 0),
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS, k,
+ &res, NULL,
+ BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL, ({
+ bch2_disk_reservation_put(c, &res);
+ check_extent(&trans, &iter, k, &w, &s, &extent_ends);
+ }));
- do {
- ret = __bch2_trans_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_extent(&trans, &iter, &w, &s));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
-#if 0
- bch2_bkey_buf_exit(&prev, c);
-#endif
+ bch2_disk_reservation_put(c, &res);
+ extent_ends_reset(&extent_ends);
+ darray_exit(&extent_ends);
inode_walker_exit(&w);
bch2_trans_exit(&trans);
snapshots_seen_exit(&s);
if (ret)
- bch_err(c, "error %i from check_extents()", ret);
+ bch_err_fn(c, ret);
return ret;
}
{
struct bch_fs *c = trans->c;
struct inode_walker_entry *i;
- int ret = 0, ret2 = 0;
+ u32 restart_count = trans->restart_count;
+ int ret = 0;
s64 count2;
darray_for_each(w->inodes, i) {
ret = write_inode(trans, &i->inode, i->snapshot);
if (ret)
break;
- ret2 = -EINTR;
}
}
fsck_err:
if (ret)
- bch_err(c, "error %i from check_subdir_count()", ret);
- return ret ?: ret2;
+ bch_err_fn(c, ret);
+ if (!ret && trans_was_restarted(trans, restart_count))
+ ret = -BCH_ERR_transaction_restart_nested;
+ return ret;
}
static int check_dirent_target(struct btree_trans *trans,
fsck_err:
printbuf_exit(&buf);
- if (ret && ret != -EINTR)
- bch_err(c, "error %i from check_target()", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err_fn(c, ret);
return ret;
}
static int check_dirent(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k,
struct bch_hash_info *hash_info,
struct inode_walker *dir,
struct inode_walker *target,
struct snapshots_seen *s)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
struct bkey_s_c_dirent d;
struct inode_walker_entry *i;
struct printbuf buf = PRINTBUF;
+ struct bpos equiv;
int ret = 0;
-peek:
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- goto out;
-
- ret = bkey_err(k);
- if (ret)
- goto err;
ret = check_key_has_snapshot(trans, iter, k);
if (ret) {
goto out;
}
- ret = snapshots_seen_update(c, s, k.k->p);
+ equiv = k.k->p;
+ equiv.snapshot = bch2_snapshot_equiv(c, k.k->p.snapshot);
+
+ ret = snapshots_seen_update(c, s, iter->btree_id, k.k->p);
if (ret)
goto err;
goto err;
}
- if (!iter->path->should_be_locked) {
- /* hack: see check_extent() */
- goto peek;
- }
+ BUG_ON(!iter->path->should_be_locked);
- ret = __walk_inode(trans, dir, k.k->p);
+ i = walk_inode(trans, dir, equiv);
+ ret = PTR_ERR_OR_ZERO(i);
if (ret < 0)
goto err;
- if (fsck_err_on(ret == INT_MAX, c,
+ if (dir->first_this_inode)
+ *hash_info = bch2_hash_info_init(c, &dir->inodes.data[0].inode);
+ dir->first_this_inode = false;
+
+ if (fsck_err_on(!i, c,
"dirent in nonexisting directory:\n%s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
goto out;
}
- if (ret == INT_MAX) {
- ret = 0;
+ if (!i)
goto out;
- }
-
- i = dir->inodes.data + ret;
- ret = 0;
if (fsck_err_on(!S_ISDIR(i->inode.bi_mode), c,
"dirent in non directory inode type %s:\n%s",
goto out;
}
- if (dir->first_this_inode)
- *hash_info = bch2_hash_info_init(c, &dir->inodes.data[0].inode);
-
- ret = hash_check_key(trans, bch2_dirent_hash_desc,
- hash_info, iter, k);
+ ret = hash_check_key(trans, bch2_dirent_hash_desc, hash_info, iter, k);
if (ret < 0)
goto err;
if (ret) {
ret = __subvol_lookup(trans, target_subvol,
&target_snapshot, &target_inum);
- if (ret && ret != -ENOENT)
+ if (ret && !bch2_err_matches(ret, ENOENT))
goto err;
if (fsck_err_on(ret, c,
- "dirent points to missing subvolume %llu",
- le64_to_cpu(d.v->d_child_subvol))) {
+ "dirent points to missing subvolume %u",
+ le32_to_cpu(d.v->d_child_subvol))) {
ret = __remove_dirent(trans, d.k->p);
goto err;
}
ret = __lookup_inode(trans, target_inum,
&subvol_root, &target_snapshot);
- if (ret && ret != -ENOENT)
+ if (ret && !bch2_err_matches(ret, ENOENT))
goto err;
if (fsck_err_on(ret, c,
goto err;
if (fsck_err_on(!target->inodes.nr, c,
- "dirent points to missing inode:\n%s",
+ "dirent points to missing inode: (equiv %u)\n%s",
+ equiv.snapshot,
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k),
buf.buf))) {
}
if (d.v->d_type == DT_DIR)
- for_each_visible_inode(c, s, dir, d.k->p.snapshot, i)
+ for_each_visible_inode(c, s, dir, equiv.snapshot, i)
i->count++;
out:
fsck_err:
printbuf_exit(&buf);
- if (ret && ret != -EINTR)
- bch_err(c, "error %i from check_dirent()", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err_fn(c, ret);
return ret;
}
* Walk dirents: verify that they all have a corresponding S_ISDIR inode,
* validate d_type
*/
-noinline_for_stack
-static int check_dirents(struct bch_fs *c)
+int bch2_check_dirents(struct bch_fs *c)
{
struct inode_walker dir = inode_walker_init();
struct inode_walker target = inode_walker_init();
struct bch_hash_info hash_info;
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
int ret = 0;
- bch_verbose(c, "checking dirents");
-
snapshots_seen_init(&s);
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_dirents,
- POS(BCACHEFS_ROOT_INO, 0),
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- do {
- ret = __bch2_trans_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_dirent(&trans, &iter, &hash_info,
- &dir, &target, &s));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_dirents,
+ POS(BCACHEFS_ROOT_INO, 0),
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS,
+ k,
+ NULL, NULL,
+ BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_dirent(&trans, &iter, k, &hash_info, &dir, &target, &s));
bch2_trans_exit(&trans);
snapshots_seen_exit(&s);
inode_walker_exit(&target);
if (ret)
- bch_err(c, "error %i from check_dirents()", ret);
+ bch_err_fn(c, ret);
return ret;
}
static int check_xattr(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k,
struct bch_hash_info *hash_info,
struct inode_walker *inode)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
+ struct inode_walker_entry *i;
int ret;
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- return 0;
-
- ret = bkey_err(k);
+ ret = check_key_has_snapshot(trans, iter, k);
if (ret)
return ret;
- ret = check_key_has_snapshot(trans, iter, k);
+ i = walk_inode(trans, inode, k.k->p);
+ ret = PTR_ERR_OR_ZERO(i);
if (ret)
return ret;
- ret = __walk_inode(trans, inode, k.k->p);
- if (ret < 0)
- return ret;
+ if (inode->first_this_inode)
+ *hash_info = bch2_hash_info_init(c, &inode->inodes.data[0].inode);
+ inode->first_this_inode = false;
- if (fsck_err_on(ret == INT_MAX, c,
+ if (fsck_err_on(!i, c,
"xattr for missing inode %llu",
k.k->p.inode))
return bch2_btree_delete_at(trans, iter, 0);
- if (ret == INT_MAX)
+ if (!i)
return 0;
- ret = 0;
-
- if (inode->first_this_inode)
- *hash_info = bch2_hash_info_init(c, &inode->inodes.data[0].inode);
-
ret = hash_check_key(trans, bch2_xattr_hash_desc, hash_info, iter, k);
fsck_err:
- if (ret && ret != -EINTR)
- bch_err(c, "error %i from check_xattr()", ret);
+ if (ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ bch_err_fn(c, ret);
return ret;
}
/*
* Walk xattrs: verify that they all have a corresponding inode
*/
-noinline_for_stack
-static int check_xattrs(struct bch_fs *c)
+int bch2_check_xattrs(struct bch_fs *c)
{
struct inode_walker inode = inode_walker_init();
struct bch_hash_info hash_info;
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
int ret = 0;
- bch_verbose(c, "checking xattrs");
-
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_xattrs,
- POS(BCACHEFS_ROOT_INO, 0),
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- do {
- ret = __bch2_trans_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_xattr(&trans, &iter, &hash_info,
- &inode));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_xattrs,
+ POS(BCACHEFS_ROOT_INO, 0),
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS,
+ k,
+ NULL, NULL,
+ BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_xattr(&trans, &iter, k, &hash_info, &inode));
bch2_trans_exit(&trans);
if (ret)
- bch_err(c, "error %i from check_xattrs()", ret);
+ bch_err_fn(c, ret);
return ret;
}
int ret;
ret = __subvol_lookup(trans, BCACHEFS_ROOT_SUBVOL, &snapshot, &inum);
- if (ret && ret != -ENOENT)
+ if (ret && !bch2_err_matches(ret, ENOENT))
return ret;
if (mustfix_fsck_err_on(ret, c, "root subvol missing")) {
root_subvol.v.flags = 0;
root_subvol.v.snapshot = cpu_to_le32(snapshot);
root_subvol.v.inode = cpu_to_le64(inum);
- ret = __bch2_trans_do(trans, NULL, NULL,
+ ret = commit_do(trans, NULL, NULL,
BTREE_INSERT_NOFAIL|
BTREE_INSERT_LAZY_RW,
- __bch2_btree_insert(trans, BTREE_ID_subvolumes, &root_subvol.k_i));
+ __bch2_btree_insert(trans, BTREE_ID_subvolumes,
+ &root_subvol.k_i, 0));
if (ret) {
- bch_err(c, "error writing root subvol: %i", ret);
+ bch_err(c, "error writing root subvol: %s", bch2_err_str(ret));
goto err;
}
}
ret = __lookup_inode(trans, BCACHEFS_ROOT_INO, &root_inode, &snapshot);
- if (ret && ret != -ENOENT)
+ if (ret && !bch2_err_matches(ret, ENOENT))
return ret;
if (mustfix_fsck_err_on(ret, c, "root directory missing") ||
ret = __write_inode(trans, &root_inode, snapshot);
if (ret)
- bch_err(c, "error writing root inode: %i", ret);
+ bch_err(c, "error writing root inode: %s", bch2_err_str(ret));
}
err:
fsck_err:
}
/* Get root directory, create if it doesn't exist: */
-noinline_for_stack
-static int check_root(struct bch_fs *c)
+int bch2_check_root(struct bch_fs *c)
{
- bch_verbose(c, "checking root directory");
+ int ret;
- return bch2_trans_do(c, NULL, NULL,
+ ret = bch2_trans_do(c, NULL, NULL,
BTREE_INSERT_NOFAIL|
BTREE_INSERT_LAZY_RW,
check_root_trans(&trans));
+
+ if (ret)
+ bch_err_fn(c, ret);
+ return ret;
}
struct pathbuf_entry {
struct bch_fs *c = trans->c;
int ret = 0;
- snapshot = snapshot_t(c, snapshot)->equiv;
+ snapshot = bch2_snapshot_equiv(c, snapshot);
p->nr = 0;
while (!(inode->bi_inum == BCACHEFS_ROOT_INO &&
PTR_ERR_OR_ZERO((d = dirent_get_by_pos(trans, &dirent_iter,
SPOS(inode->bi_dir, inode->bi_dir_offset,
parent_snapshot))).k));
- if (ret && ret != -ENOENT)
+ if (ret && !bch2_err_matches(ret, ENOENT))
break;
if (!ret && !dirent_points_to_inode(d, inode)) {
bch2_trans_iter_exit(trans, &dirent_iter);
- ret = -ENOENT;
+ ret = -BCH_ERR_ENOENT_dirent_doesnt_match_inode;
}
- if (ret == -ENOENT) {
+ if (bch2_err_matches(ret, ENOENT)) {
if (fsck_err(c, "unreachable inode %llu:%u, type %s nlink %u backptr %llu:%llu",
inode->bi_inum, snapshot,
bch2_d_type_str(inode_d_type(inode)),
if (!fsck_err(c, "directory structure loop"))
return 0;
- ret = __bch2_trans_do(trans, NULL, NULL,
+ ret = commit_do(trans, NULL, NULL,
BTREE_INSERT_NOFAIL|
BTREE_INSERT_LAZY_RW,
remove_backpointer(trans, inode));
}
fsck_err:
if (ret)
- bch_err(c, "%s: err %i", __func__, ret);
+ bch_err_fn(c, ret);
return ret;
}
/*
* Check for unreachable inodes, as well as loops in the directory structure:
- * After check_dirents(), if an inode backpointer doesn't exist that means it's
+ * After bch2_check_dirents(), if an inode backpointer doesn't exist that means it's
* unreachable:
*/
-noinline_for_stack
-static int check_directory_structure(struct bch_fs *c)
+int bch2_check_directory_structure(struct bch_fs *c)
{
struct btree_trans trans;
struct btree_iter iter;
break;
}
bch2_trans_iter_exit(&trans, &iter);
-
- BUG_ON(ret == -EINTR);
-
+ bch2_trans_exit(&trans);
darray_exit(&path);
- bch2_trans_exit(&trans);
+ if (ret)
+ bch_err_fn(c, ret);
return ret;
}
{
if (t->nr == t->size) {
size_t new_size = max_t(size_t, 128UL, t->size * 2);
- void *d = kvmalloc(new_size * sizeof(t->d[0]), GFP_KERNEL);
+ void *d = kvmalloc_array(new_size, sizeof(t->d[0]), GFP_KERNEL);
+
if (!d) {
bch_err(c, "fsck: error allocating memory for nlink_table, size %zu",
new_size);
- return -ENOMEM;
+ return -BCH_ERR_ENOMEM_fsck_add_nlink;
}
if (t->d)
* Backpointer and directory structure checks are sufficient for
* directories, since they can't have hardlinks:
*/
- if (S_ISDIR(le16_to_cpu(u.bi_mode)))
+ if (S_ISDIR(u.bi_mode))
continue;
if (!u.bi_nlink)
BTREE_ITER_INTENT|
BTREE_ITER_PREFETCH|
BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
- ret = snapshots_seen_update(c, &s, k.k->p);
+ ret = snapshots_seen_update(c, &s, iter.btree_id, k.k->p);
if (ret)
break;
d.v->d_type != DT_SUBVOL)
inc_link(c, &s, links, range_start, range_end,
le64_to_cpu(d.v->d_inum),
- d.k->p.snapshot);
+ bch2_snapshot_equiv(c, d.k->p.snapshot));
break;
}
}
return ret;
}
+static int check_nlinks_update_inode(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k,
+ struct nlink_table *links,
+ size_t *idx, u64 range_end)
+{
+ struct bch_fs *c = trans->c;
+ struct bch_inode_unpacked u;
+ struct nlink *link = &links->d[*idx];
+ int ret = 0;
+
+ if (k.k->p.offset >= range_end)
+ return 1;
+
+ if (!bkey_is_inode(k.k))
+ return 0;
+
+ BUG_ON(bch2_inode_unpack(k, &u));
+
+ if (S_ISDIR(u.bi_mode))
+ return 0;
+
+ if (!u.bi_nlink)
+ return 0;
+
+ while ((cmp_int(link->inum, k.k->p.offset) ?:
+ cmp_int(link->snapshot, k.k->p.snapshot)) < 0) {
+ BUG_ON(*idx == links->nr);
+ link = &links->d[++*idx];
+ }
+
+ if (fsck_err_on(bch2_inode_nlink_get(&u) != link->count, c,
+ "inode %llu type %s has wrong i_nlink (%u, should be %u)",
+ u.bi_inum, bch2_d_types[mode_to_type(u.bi_mode)],
+ bch2_inode_nlink_get(&u), link->count)) {
+ bch2_inode_nlink_set(&u, link->count);
+ ret = __write_inode(trans, &u, k.k->p.snapshot);
+ }
+fsck_err:
+ return ret;
+}
+
noinline_for_stack
static int check_nlinks_update_hardlinks(struct bch_fs *c,
struct nlink_table *links,
struct btree_trans trans;
struct btree_iter iter;
struct bkey_s_c k;
- struct bch_inode_unpacked u;
- struct nlink *link = links->d;
+ size_t idx = 0;
int ret = 0;
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- for_each_btree_key(&trans, iter, BTREE_ID_inodes,
- POS(0, range_start),
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
- if (k.k->p.offset >= range_end)
- break;
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_inodes,
+ POS(0, range_start),
+ BTREE_ITER_INTENT|BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS, k,
+ NULL, NULL, BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_nlinks_update_inode(&trans, &iter, k, links, &idx, range_end));
- if (!bkey_is_inode(k.k))
- continue;
-
- BUG_ON(bch2_inode_unpack(k, &u));
-
- if (S_ISDIR(le16_to_cpu(u.bi_mode)))
- continue;
-
- if (!u.bi_nlink)
- continue;
-
- while ((cmp_int(link->inum, k.k->p.offset) ?:
- cmp_int(link->snapshot, k.k->p.snapshot)) < 0) {
- link++;
- BUG_ON(link >= links->d + links->nr);
- }
-
- if (fsck_err_on(bch2_inode_nlink_get(&u) != link->count, c,
- "inode %llu type %s has wrong i_nlink (%u, should be %u)",
- u.bi_inum, bch2_d_types[mode_to_type(u.bi_mode)],
- bch2_inode_nlink_get(&u), link->count)) {
- bch2_inode_nlink_set(&u, link->count);
-
- ret = write_inode(&trans, &u, k.k->p.snapshot);
- if (ret)
- bch_err(c, "error in fsck: error %i updating inode", ret);
- }
- }
-fsck_err:
- bch2_trans_iter_exit(&trans, &iter);
bch2_trans_exit(&trans);
- if (ret)
+ if (ret < 0) {
bch_err(c, "error in fsck: btree error %i while walking inodes", ret);
+ return ret;
+ }
- return ret;
+ return 0;
}
-noinline_for_stack
-static int check_nlinks(struct bch_fs *c)
+int bch2_check_nlinks(struct bch_fs *c)
{
struct nlink_table links = { 0 };
u64 this_iter_range_start, next_iter_range_start = 0;
int ret = 0;
- bch_verbose(c, "checking inode nlinks");
-
do {
this_iter_range_start = next_iter_range_start;
next_iter_range_start = U64_MAX;
kvfree(links.d);
+ if (ret)
+ bch_err_fn(c, ret);
return ret;
}
-static int fix_reflink_p_key(struct btree_trans *trans, struct btree_iter *iter)
+static int fix_reflink_p_key(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k)
{
- struct bkey_s_c k;
struct bkey_s_c_reflink_p p;
struct bkey_i_reflink_p *u;
int ret;
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- return 0;
-
- ret = bkey_err(k);
- if (ret)
- return ret;
-
if (k.k->type != KEY_TYPE_reflink_p)
return 0;
return bch2_trans_update(trans, iter, &u->k_i, BTREE_TRIGGER_NORUN);
}
-noinline_for_stack
-static int fix_reflink_p(struct bch_fs *c)
+int bch2_fix_reflink_p(struct bch_fs *c)
{
- struct btree_trans trans;
struct btree_iter iter;
struct bkey_s_c k;
int ret;
if (c->sb.version >= bcachefs_metadata_version_reflink_p_fix)
return 0;
- bch_verbose(c, "fixing reflink_p keys");
-
- bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
-
- for_each_btree_key(&trans, iter, BTREE_ID_extents, POS_MIN,
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
- if (k.k->type == KEY_TYPE_reflink_p) {
- ret = __bch2_trans_do(&trans, NULL, NULL,
- BTREE_INSERT_NOFAIL|
- BTREE_INSERT_LAZY_RW,
- fix_reflink_p_key(&trans, &iter));
- if (ret)
- break;
- }
- }
- bch2_trans_iter_exit(&trans, &iter);
+ ret = bch2_trans_run(c,
+ for_each_btree_key_commit(&trans, iter,
+ BTREE_ID_extents, POS_MIN,
+ BTREE_ITER_INTENT|BTREE_ITER_PREFETCH|
+ BTREE_ITER_ALL_SNAPSHOTS, k,
+ NULL, NULL, BTREE_INSERT_NOFAIL|BTREE_INSERT_LAZY_RW,
+ fix_reflink_p_key(&trans, &iter, k)));
- bch2_trans_exit(&trans);
+ if (ret)
+ bch_err_fn(c, ret);
return ret;
}
-
-/*
- * Checks for inconsistencies that shouldn't happen, unless we have a bug.
- * Doesn't fix them yet, mainly because they haven't yet been observed:
- */
-int bch2_fsck_full(struct bch_fs *c)
-{
- return bch2_fs_snapshots_check(c) ?:
- check_inodes(c, true) ?:
- check_subvols(c) ?:
- check_extents(c) ?:
- check_dirents(c) ?:
- check_xattrs(c) ?:
- check_root(c) ?:
- check_directory_structure(c) ?:
- check_nlinks(c) ?:
- fix_reflink_p(c);
-}
-
-int bch2_fsck_walk_inodes_only(struct bch_fs *c)
-{
- return check_inodes(c, false);
-}
projects / bcachefs-tools-debian / blobdiff