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| author | Hannes Reinecke <hare@suse.de> | 2010-05-04 16:49:21 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-05-05 12:13:26 -0400 |
| commit | c213e1407be6b04b144794399a91472e0ef92aec (patch) | |
| tree | 008bd8d7c0840c29bac8bf159850ab317043c4eb | |
| parent | 5447ed6c968e7270b656afa273c2b79d15d82edd (diff) | |
| download | blackbird-op-linux-c213e1407be6b04b144794399a91472e0ef92aec.tar.gz blackbird-op-linux-c213e1407be6b04b144794399a91472e0ef92aec.zip | |
[SCSI] Enable retries for SYNCRONIZE_CACHE commands to fix I/O error
Some arrays are giving I/O errors with ext3 filesystems when
SYNCHRONIZE_CACHE gets a UNIT_ATTENTION. What is happening is that
these commands have no retries, so the UNIT_ATTENTION causes the
barrier to fail. We should be enable retries here to clear any
transient error and allow the barrier to succeed.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| -rw-r--r-- | drivers/scsi/sd.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 8b827f37b03e..de6c60320f6f 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1040,6 +1040,7 @@ static void sd_prepare_flush(struct request_queue *q, struct request *rq) { rq->cmd_type = REQ_TYPE_BLOCK_PC; rq->timeout = SD_TIMEOUT; + rq->retries = SD_MAX_RETRIES; rq->cmd[0] = SYNCHRONIZE_CACHE; rq->cmd_len = 10; } |
