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

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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>
This commit is contained in:
Rajashekhar M A
2025-06-06 15:59:24 +02:00
committed by Martin K. Petersen
parent b2f966568f
commit 5c3ba81923
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/scsi_error.c
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@@ -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