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[SCSI] scsi dh alua: handle report luns data changed in check sense callout

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When we switch controllers the Intel Multi-Flex reports
REPORTED_LUNS_DATA_HAS_CHANGED. This patch just has us
retry the command.

Signed-off-by: Ilgu Hong <ilgu.hong@promise.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Ilgu Hong 2009-01-30 17:00:11 -06:00 committed by James Bottomley
parent 49baef0a5d
commit 4d086f6baf
1 changed files with 9 additions and 0 deletions
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9
drivers/scsi/device_handler/scsi_dh_alua.c
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@ -461,6 +461,15 @@ static int alua_check_sense(struct scsi_device *sdev,
*/ */
return ADD_TO_MLQUEUE; return ADD_TO_MLQUEUE;
} }
if (sense_hdr->asc == 0x3f && sense_hdr->ascq == 0x0e) {
/*
* REPORTED_LUNS_DATA_HAS_CHANGED is reported
* when switching controllers on targets like
* Intel Multi-Flex. We can just retry.
*/
return ADD_TO_MLQUEUE;
}
break; break;
} }