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[SCSI] scsi_dh_alua: Enable STPG for unavailable ports 

A quote from SPC-4: "While in the unavailable primary target port
asymmetric access state, the device server shall support those of
the following commands that it supports while in the active/optimized
state: [ ... ] d) SET TARGET PORT GROUPS; [ ... ]". Hence enable
sending STPG to a target port group that is in the unavailable state.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Hannes Reinecke <hare@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Bart Van Assche 2012-08-24 09:08:41 +00:00 committed by James Bottomley
parent bc3f02a795
commit e47f8976d8
1 changed files with 1 additions and 2 deletions
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3
drivers/scsi/device_handler/scsi_dh_alua.c
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@ -641,8 +641,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h)
h->state = TPGS_STATE_STANDBY;
break;
case TPGS_STATE_OFFLINE:
case TPGS_STATE_UNAVAILABLE:
/* Path unusable for unavailable/offline */
/* Path unusable */
err = SCSI_DH_DEV_OFFLINED;
break;
default: