scsi: error: alua: I/O errors for ALUA state transitions

When a host is configured with a few LUNs and I/O is running, injecting
FC faults repeatedly leads to path recovery problems.  The LUNs have 4
paths each and 3 of them come back active after say an FC fault which
makes 2 of the paths go down, instead of all 4. This happens after
several iterations of continuous FC faults.

Reason here is that we're returning an I/O error whenever we're
encountering sense code 06/04/0a (LOGICAL UNIT NOT ACCESSIBLE, ASYMMETRIC
ACCESS STATE TRANSITION) instead of retrying.

Signed-off-by: Rajashekhar M A <rajs@netapp.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20250606135924.27397-1-hare@kernel.org
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 376b8897ab90a41d015e40af1e2b618469b88a29..746ff6a1f309a33bc50e44cc8cea198f7b734fea 100644 (file)
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -665,7 +665,8 @@ enum scsi_disposition scsi_check_sense(struct scsi_cmnd *scmd)
                 * if the device is in the process of becoming ready, we
                 * should retry.
                 */
-               if ((sshdr.asc == 0x04) && (sshdr.ascq == 0x01))
+               if ((sshdr.asc == 0x04) &&
+                   (sshdr.ascq == 0x01 || sshdr.ascq == 0x0a))
                        return NEEDS_RETRY;
                /*
                 * if the device is not started, we need to wake