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[SCSI] ALUA: send STPG if explicit and implicit is supported 

alua_activate only sends a STPG if only explicit is suppored.
As a result, for EMC targets that support both we end up doing
a implicit failover when X commands are finally sent to
the other SP.

This patch does a AND on the h->tpgs, so we do a explicit failover
right away.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Mike Christie 2009-07-28 23:08:06 -05:00 committed by James Bottomley
parent a4a8b064dd
commit 3c0d1d94aa
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/device_handler/scsi_dh_alua.c
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@ -663,7 +663,7 @@ static int alua_activate(struct scsi_device *sdev)
goto out;
}
if (h->tpgs == TPGS_MODE_EXPLICIT && h->state != TPGS_STATE_OPTIMIZED)
if (h->tpgs & TPGS_MODE_EXPLICIT && h->state != TPGS_STATE_OPTIMIZED)
err = alua_stpg(sdev, TPGS_STATE_OPTIMIZED, h);
out: