diff mbox series

[v11,25/34] scsi: sd: Have pr commands retry UAs

Message ID 20230905231547.83945-26-michael.christie@oracle.com (mailing list archive)
State Changes Requested
Headers show
Series [v11,01/34] scsi: Add helper to prep sense during error handling | expand

Commit Message

Mike Christie Sept. 5, 2023, 11:15 p.m. UTC 
It's common to get a UA when doing PR commands. It could be due to a
target restarting, transport level relogin or other PR commands like a
release causing it. The upper layers don't get the sense and in some cases
have no idea if it's a SCSI device, so this has the sd layer retry.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 drivers/scsi/sd.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

Comments

Martin Wilck Sept. 15, 2023, 9:18 p.m. UTC | #1 
On Tue, 2023-09-05 at 18:15 -0500, Mike Christie wrote:
> It's common to get a UA when doing PR commands. It could be due to a
> target restarting, transport level relogin or other PR commands like
> a
> release causing it. The upper layers don't get the sense and in some
> cases
> have no idea if it's a SCSI device, so this has the sd layer retry.
> 
> Signed-off-by: Mike Christie <michael.christie@oracle.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>

Reviewed-by: Martin Wilck <mwilck@suse.com>
diff mbox series

Patch

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 6dd2dde75354..5b80f1df4cd9 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1718,8 +1718,19 @@  static int sd_pr_in_command(struct block_device *bdev, u8 sa,
 	struct scsi_device *sdev = sdkp->device;
 	struct scsi_sense_hdr sshdr;
 	u8 cmd[10] = { PERSISTENT_RESERVE_IN, sa };
+	struct scsi_failure failures[] = {
+		{
+			.sense = UNIT_ATTENTION,
+			.asc = SCMD_FAILURE_ASC_ANY,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = 5,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{}
+	};
 	const struct scsi_exec_args exec_args = {
 		.sshdr = &sshdr,
+		.failures = failures,
 	};
 	int result;
 
@@ -1806,8 +1817,19 @@  static int sd_pr_out_command(struct block_device *bdev, u8 sa, u64 key,
 	struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk);
 	struct scsi_device *sdev = sdkp->device;
 	struct scsi_sense_hdr sshdr;
+	struct scsi_failure failures[] = {
+		{
+			.sense = UNIT_ATTENTION,
+			.asc = SCMD_FAILURE_ASC_ANY,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = 5,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{}
+	};
 	const struct scsi_exec_args exec_args = {
 		.sshdr = &sshdr,
+		.failures = failures,
 	};
 	int result;
 	u8 cmd[16] = { 0, };