diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2025-03-10 15:40:04 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2025-07-01 00:20:01 -0400 |
| commit | 55432b950667806efac94b86a41bb91d5a756493 (patch) | |
| tree | d3239d6b48f358ddee7bc3790caa00ad07eb7b57 | |
| parent | b4929554bf9e89a3cbddf50ee9db0eaa605636a3 (diff) | |
bcachefs: Read retries are after checksum errors now REQ_FUA
REQ_FUA means "skip the drive cache", and it can be used with reads to.
If there was a checksum error, we want to retry the whole read path, not
read it from cache again.
Suggested-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | fs/bcachefs/io_read.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/fs/bcachefs/io_read.c b/fs/bcachefs/io_read.c index cd184b219a65..210b6adc359f 100644 --- a/fs/bcachefs/io_read.c +++ b/fs/bcachefs/io_read.c @@ -37,12 +37,6 @@ module_param_named(read_corrupt_ratio, bch2_read_corrupt_ratio, uint, 0644); MODULE_PARM_DESC(read_corrupt_ratio, ""); #endif -static bool bch2_poison_extents_on_checksum_error; -module_param_named(poison_extents_on_checksum_error, - bch2_poison_extents_on_checksum_error, bool, 0644); -MODULE_PARM_DESC(poison_extents_on_checksum_error, - "Extents with checksum errors are marked as poisoned - unsafe without read fua support"); - #ifndef CONFIG_BCACHEFS_NO_LATENCY_ACCT static bool bch2_target_congested(struct bch_fs *c, u16 target) @@ -484,9 +478,6 @@ static void get_rbio_extent(struct btree_trans *trans, static noinline int maybe_poison_extent(struct btree_trans *trans, struct bch_read_bio *rbio, enum btree_id btree, struct bkey_s_c read_k) { - if (!bch2_poison_extents_on_checksum_error) - return 0; - struct bch_fs *c = trans->c; struct data_update *u = rbio_data_update(rbio); @@ -1232,6 +1223,10 @@ retry_pick: async_object_list_add(c, rbio, rbio, &rbio->list_idx); + /* XXX: also nvme read recovery level */ + if (unlikely(failed && bch2_dev_io_failures(failed, pick.ptr.dev))) + rbio->bio.bi_opf |= REQ_FUA; + if (rbio->bounce) trace_and_count(c, io_read_bounce, &rbio->bio); |