[ 33/33] SCSI: scsi_dh_alua: Enable STPG for unavailable ports

From: Greg Kroah-Hartman
Date: Thu Oct 04 2012 - 17:28:47 EST


3.0-stable review patch. If anyone has any objections, please let me know.

------------------

From: Bart Van Assche <bvanassche@xxxxxxx>

commit e47f8976d8e573928824a06748f7bc82c58d747f upstream.

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@xxxxxxx>
Reviewed-by: Mike Christie <michaelc@xxxxxxxxxxx>
Acked-by: Hannes Reinecke <hare@xxxxxxx>
Signed-off-by: James Bottomley <JBottomley@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/scsi/device_handler/scsi_dh_alua.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -619,8 +619,7 @@ static int alua_rtpg(struct scsi_device
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:


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