bcachefs: Fix a spurious fsck error
We were getting spurious "multiple types of data in same bucket" errors
in fsck, because the check was running for (cached) stale pointers -
oops.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
diff --git a/fs/bcachefs/btree_gc.c b/fs/bcachefs/btree_gc.c
index 66367ab9..f146673 100644
--- a/fs/bcachefs/btree_gc.c
+++ b/fs/bcachefs/btree_gc.c
@@ -504,22 +504,6 @@ static int bch2_check_fix_ptrs(struct bch_fs *c, enum btree_id btree_id,
struct bucket *g2 = PTR_BUCKET(ca, &p.ptr, false);
enum bch_data_type data_type = bch2_bkey_ptr_data_type(*k, &entry->ptr);
- if (fsck_err_on(g->mark.data_type &&
- g->mark.data_type != data_type, c,
- "bucket %u:%zu different types of data in same bucket: %s, %s\n"
- "while marking %s",
- p.ptr.dev, PTR_BUCKET_NR(ca, &p.ptr),
- bch2_data_types[g->mark.data_type],
- bch2_data_types[data_type],
- (bch2_bkey_val_to_text(&PBUF(buf), c, *k), buf))) {
- if (data_type == BCH_DATA_btree) {
- g2->_mark.data_type = g->_mark.data_type = data_type;
- set_bit(BCH_FS_NEED_ALLOC_WRITE, &c->flags);
- } else {
- do_update = true;
- }
- }
-
if (fsck_err_on(!g->gen_valid, c,
"bucket %u:%zu data type %s ptr gen %u missing in alloc btree\n"
"while marking %s",
@@ -536,6 +520,19 @@ static int bch2_check_fix_ptrs(struct bch_fs *c, enum btree_id btree_id,
}
}
+ if (fsck_err_on(data_type == BCH_DATA_btree &&
+ g->mark.gen != p.ptr.gen, c,
+ "bucket %u:%zu data type %s has metadata but wrong gen: %u != %u\n"
+ "while marking %s",
+ p.ptr.dev, PTR_BUCKET_NR(ca, &p.ptr),
+ bch2_data_types[ptr_data_type(k->k, &p.ptr)],
+ p.ptr.gen, g->mark.gen,
+ (bch2_bkey_val_to_text(&PBUF(buf), c, *k), buf))) {
+ g2->_mark.data_type = g->_mark.data_type = data_type;
+ g2->gen_valid = g->gen_valid = true;
+ set_bit(BCH_FS_NEED_ALLOC_WRITE, &c->flags);
+ }
+
if (fsck_err_on(gen_cmp(p.ptr.gen, g->mark.gen) > 0, c,
"bucket %u:%zu data type %s ptr gen in the future: %u > %u\n"
"while marking %s",
@@ -566,6 +563,26 @@ static int bch2_check_fix_ptrs(struct bch_fs *c, enum btree_id btree_id,
(bch2_bkey_val_to_text(&PBUF(buf), c, *k), buf)))
do_update = true;
+ if (p.ptr.gen != g->mark.gen)
+ continue;
+
+ if (fsck_err_on(g->mark.data_type &&
+ g->mark.data_type != data_type, c,
+ "bucket %u:%zu different types of data in same bucket: %s, %s\n"
+ "while marking %s",
+ p.ptr.dev, PTR_BUCKET_NR(ca, &p.ptr),
+ bch2_data_types[g->mark.data_type],
+ bch2_data_types[data_type],
+ (bch2_bkey_val_to_text(&PBUF(buf), c, *k), buf))) {
+ if (data_type == BCH_DATA_btree) {
+ g2->_mark.data_type = g->_mark.data_type = data_type;
+ g2->gen_valid = g->gen_valid = true;
+ set_bit(BCH_FS_NEED_ALLOC_WRITE, &c->flags);
+ } else {
+ do_update = true;
+ }
+ }
+
if (p.has_ec) {
struct stripe *m = genradix_ptr(&c->stripes[true], p.ec.idx);