struct snapshot_table *t;
bool ret;
- EBUG_ON(c->curr_recovery_pass <= BCH_RECOVERY_PASS_check_snapshots);
+ EBUG_ON(c->recovery_pass_done <= BCH_RECOVERY_PASS_check_snapshots);
rcu_read_lock();
t = rcu_dereference(c->snapshots);
mutex_unlock(&c->snapshot_table_lock);
}
-int bch2_mark_snapshot(struct btree_trans *trans,
+static int __bch2_mark_snapshot(struct btree_trans *trans,
enum btree_id btree, unsigned level,
struct bkey_s_c old, struct bkey_s_c new,
unsigned flags)
return ret;
}
+int bch2_mark_snapshot(struct btree_trans *trans,
+ enum btree_id btree, unsigned level,
+ struct bkey_s_c old, struct bkey_s new,
+ unsigned flags)
+{
+ return __bch2_mark_snapshot(trans, btree, level, old, new.s_c, flags);
+}
+
int bch2_snapshot_lookup(struct btree_trans *trans, u32 id,
struct bch_snapshot *s)
{
struct bch_fs *c = trans->c;
struct btree_iter iter;
struct bkey_s_c k;
- struct bkey_s_c_subvolume s;
bool found = false;
int ret;
if (k.k->type != KEY_TYPE_subvolume)
continue;
- s = bkey_s_c_to_subvolume(k);
+ struct bkey_s_c_subvolume s = bkey_s_c_to_subvolume(k);
if (!bch2_snapshot_is_ancestor(c, le32_to_cpu(s.v->snapshot), snapshot_root))
continue;
if (!BCH_SUBVOLUME_SNAP(s.v)) {
*/
int bch2_check_snapshot_trees(struct bch_fs *c)
{
- struct btree_iter iter;
- struct bkey_s_c k;
- int ret;
-
- ret = bch2_trans_run(c,
+ int ret = bch2_trans_run(c,
for_each_btree_key_commit(trans, iter,
BTREE_ID_snapshot_trees, POS_MIN,
BTREE_ITER_PREFETCH, k,
NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
check_snapshot_tree(trans, &iter, k)));
-
- if (ret)
- bch_err(c, "error %i checking snapshot trees", ret);
+ bch_err_fn(c, ret);
return ret;
}
real_depth = bch2_snapshot_depth(c, parent_id);
- if (le32_to_cpu(s.depth) != real_depth &&
- (c->sb.version_upgrade_complete < bcachefs_metadata_version_snapshot_skiplists ||
- fsck_err(c, snapshot_bad_depth,
- "snapshot with incorrect depth field, should be %u:\n %s",
- real_depth, (bch2_bkey_val_to_text(&buf, c, k), buf.buf)))) {
+ if (fsck_err_on(le32_to_cpu(s.depth) != real_depth,
+ c, snapshot_bad_depth,
+ "snapshot with incorrect depth field, should be %u:\n %s",
+ real_depth, (bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
u = bch2_bkey_make_mut_typed(trans, iter, &k, 0, snapshot);
ret = PTR_ERR_OR_ZERO(u);
if (ret)
if (ret < 0)
goto err;
- if (!ret &&
- (c->sb.version_upgrade_complete < bcachefs_metadata_version_snapshot_skiplists ||
- fsck_err(c, snapshot_bad_skiplist,
- "snapshot with bad skiplist field:\n %s",
- (bch2_bkey_val_to_text(&buf, c, k), buf.buf)))) {
+ if (fsck_err_on(!ret, c, snapshot_bad_skiplist,
+ "snapshot with bad skiplist field:\n %s",
+ (bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
u = bch2_bkey_make_mut_typed(trans, iter, &k, 0, snapshot);
ret = PTR_ERR_OR_ZERO(u);
if (ret)
int bch2_check_snapshots(struct bch_fs *c)
{
- struct btree_iter iter;
- struct bkey_s_c k;
- int ret;
-
/*
* We iterate backwards as checking/fixing the depth field requires that
* the parent's depth already be correct:
*/
- ret = bch2_trans_run(c,
+ int ret = bch2_trans_run(c,
for_each_btree_key_reverse_commit(trans, iter,
- BTREE_ID_snapshots, POS_MAX,
- BTREE_ITER_PREFETCH, k,
- NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
- check_snapshot(trans, &iter, k)));
- if (ret)
- bch_err_fn(c, ret);
+ BTREE_ID_snapshots, POS_MAX,
+ BTREE_ITER_PREFETCH, k,
+ NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
+ check_snapshot(trans, &iter, k)));
+ bch_err_fn(c, ret);
return ret;
}
n->v.subvol = cpu_to_le32(snapshot_subvols[i]);
n->v.tree = cpu_to_le32(tree);
n->v.depth = cpu_to_le32(depth);
+ n->v.btime.lo = cpu_to_le64(bch2_current_time(c));
+ n->v.btime.hi = 0;
for (j = 0; j < ARRAY_SIZE(n->v.skip); j++)
n->v.skip[j] = cpu_to_le32(bch2_snapshot_skiplist_get(c, parent));
bubble_sort(n->v.skip, ARRAY_SIZE(n->v.skip), cmp_le32);
SET_BCH_SNAPSHOT_SUBVOL(&n->v, true);
- ret = bch2_mark_snapshot(trans, BTREE_ID_snapshots, 0,
+ ret = __bch2_mark_snapshot(trans, BTREE_ID_snapshots, 0,
bkey_s_c_null, bkey_i_to_s_c(&n->k_i), 0);
if (ret)
goto err;
struct bch_fs *c = trans->c;
u32 nr_deleted_ancestors = 0;
struct bkey_i_snapshot *s;
- u32 *i;
int ret;
if (k.k->type != KEY_TYPE_snapshot)
int bch2_delete_dead_snapshots(struct bch_fs *c)
{
struct btree_trans *trans;
- struct btree_iter iter;
- struct bkey_s_c k;
- struct bkey_s_c_snapshot snap;
snapshot_id_list deleted = { 0 };
snapshot_id_list deleted_interior = { 0 };
- u32 *i, id;
+ u32 id;
int ret = 0;
if (!test_and_clear_bit(BCH_FS_need_delete_dead_snapshots, &c->flags))
if (!test_bit(BCH_FS_started, &c->flags)) {
ret = bch2_fs_read_write_early(c);
- if (ret) {
- bch_err_msg(c, ret, "deleting dead snapshots: error going rw");
+ bch_err_msg(c, ret, "deleting dead snapshots: error going rw");
+ if (ret)
return ret;
- }
}
trans = bch2_trans_get(c);
POS_MIN, 0, k,
NULL, NULL, 0,
bch2_delete_redundant_snapshot(trans, k));
- if (ret) {
- bch_err_msg(c, ret, "deleting redundant snapshots");
+ bch_err_msg(c, ret, "deleting redundant snapshots");
+ if (ret)
goto err;
- }
- ret = for_each_btree_key2(trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k,
+ ret = for_each_btree_key(trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k,
bch2_snapshot_set_equiv(trans, k));
- if (ret) {
- bch_err_msg(c, ret, "in bch2_snapshots_set_equiv");
+ bch_err_msg(c, ret, "in bch2_snapshots_set_equiv");
+ if (ret)
goto err;
- }
- for_each_btree_key(trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k, ret) {
+ ret = for_each_btree_key(trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k, ({
if (k.k->type != KEY_TYPE_snapshot)
continue;
- snap = bkey_s_c_to_snapshot(k);
- if (BCH_SNAPSHOT_DELETED(snap.v)) {
- ret = snapshot_list_add(c, &deleted, k.k->p.offset);
- if (ret)
- break;
- }
- }
- bch2_trans_iter_exit(trans, &iter);
-
- if (ret) {
- bch_err_msg(c, ret, "walking snapshots");
+ BCH_SNAPSHOT_DELETED(bkey_s_c_to_snapshot(k).v)
+ ? snapshot_list_add(c, &deleted, k.k->p.offset)
+ : 0;
+ }));
+ bch_err_msg(c, ret, "walking snapshots");
+ if (ret)
goto err;
- }
for (id = 0; id < BTREE_ID_NR; id++) {
struct bpos last_pos = POS_MIN;
bch2_disk_reservation_put(c, &res);
darray_exit(&equiv_seen);
- if (ret) {
- bch_err_msg(c, ret, "deleting keys from dying snapshots");
+ bch_err_msg(c, ret, "deleting keys from dying snapshots");
+ if (ret)
goto err;
- }
}
bch2_trans_unlock(trans);
down_write(&c->snapshot_create_lock);
- for_each_btree_key(trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k, ret) {
+ ret = for_each_btree_key(trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k, ({
u32 snapshot = k.k->p.offset;
u32 equiv = bch2_snapshot_equiv(c, snapshot);
- if (equiv != snapshot)
- snapshot_list_add(c, &deleted_interior, snapshot);
- }
- bch2_trans_iter_exit(trans, &iter);
+ equiv != snapshot
+ ? snapshot_list_add(c, &deleted_interior, snapshot)
+ : 0;
+ }));
+ bch_err_msg(c, ret, "walking snapshots");
if (ret)
goto err_create_lock;
darray_for_each(deleted, i) {
ret = commit_do(trans, NULL, NULL, 0,
bch2_snapshot_node_delete(trans, *i));
- if (ret) {
- bch_err_msg(c, ret, "deleting snapshot %u", *i);
+ bch_err_msg(c, ret, "deleting snapshot %u", *i);
+ if (ret)
goto err_create_lock;
- }
}
darray_for_each(deleted_interior, i) {
ret = commit_do(trans, NULL, NULL, 0,
bch2_snapshot_node_delete(trans, *i));
- if (ret) {
- bch_err_msg(c, ret, "deleting snapshot %u", *i);
+ bch_err_msg(c, ret, "deleting snapshot %u", *i);
+ if (ret)
goto err_create_lock;
- }
}
err_create_lock:
up_write(&c->snapshot_create_lock);
darray_exit(&deleted_interior);
darray_exit(&deleted);
bch2_trans_put(trans);
- if (ret)
- bch_err_fn(c, ret);
+ bch_err_fn(c, ret);
return ret;
}
int bch2_snapshots_read(struct bch_fs *c)
{
- struct btree_iter iter;
- struct bkey_s_c k;
- int ret = 0;
-
- ret = bch2_trans_run(c,
- for_each_btree_key2(trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k,
- bch2_mark_snapshot(trans, BTREE_ID_snapshots, 0, bkey_s_c_null, k, 0) ?:
+ int ret = bch2_trans_run(c,
+ for_each_btree_key(trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k,
+ __bch2_mark_snapshot(trans, BTREE_ID_snapshots, 0, bkey_s_c_null, k, 0) ?:
bch2_snapshot_set_equiv(trans, k) ?:
bch2_check_snapshot_needs_deletion(trans, k)) ?:
- for_each_btree_key2(trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k,
+ for_each_btree_key(trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k,
(set_is_ancestor_bitmap(c, k.k->p.offset), 0)));
- if (ret)
- bch_err_fn(c, ret);
+ bch_err_fn(c, ret);
return ret;
}
void bch2_fs_snapshots_exit(struct bch_fs *c)
{
- kfree(rcu_dereference_protected(c->snapshots, true));
+ kvfree(rcu_dereference_protected(c->snapshots, true));
}
projects / bcachefs-tools-debian / blobdiff