This patch addresses a data corruption bug in raid1 arrays using bitmaps.
Without this fix, the bitmap bits for the failed I/O end up being cleared.
Since we are in the failure leg of raid1_end_write_request, the request
either needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded).
Signed-off-by: Paul Clements <paul.clements@xxxxxxxxxxx>
---
drivers/md/raid1.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index d2378765dc15..ced076ba560e 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -478,6 +478,8 @@ static void raid1_end_write_request(struct bio *bio)
if (!test_bit(Faulty, &rdev->flags))
set_bit(R1BIO_WriteError, &r1_bio->state);
else {
+ /* Fail the request */
+ set_bit(R1BIO_Degraded, &r1_bio->state);
/* Finished with this branch */
r1_bio->bios[mirror] = NULL;
to_put = bio;
--
2.17.1
