From: Hannes Reinecke <hare@suse.de>
To: "Stewart, Sean" <Sean.Stewart@netapp.com>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"dm-devel@redhat.com" <dm-devel@redhat.com>,
"James.Bottomley@suse.de" <James.Bottomley@suse.de>,
"snitzer@redhat.com" <snitzer@redhat.com>
Subject: Re: [PATCH] scsi_dh_alua: Add module parameter to allow failover to non preferred path without STPG
Date: Sun, 31 Mar 2013 18:24:22 +0200 [thread overview]
Message-ID: <51586336.9080802@suse.de> (raw)
In-Reply-To: <8255ED565A0EAA4A960625E27D49DBF21FF906FB@SACEXCMBX04-PRD.hq.netapp.com>
On 03/28/2013 11:07 PM, Stewart, Sean wrote:
> Currently ALUA device handler sends STPG command during failover and failback.
> Failover can be optimized by implicit failover (by not to sending STPG command),
> when 1 is passed as hwhandler parameter in multipath.conf. ex "2 alua 1". We may
> need to pass the parameter through module param for alua device handler to optimize
> failover if incase retain_attached_hwhandler set in multipath.conf and hwhandler
> is set with non-tpgs device handler ex: '1 rdac'.
>
> Signed-off-by: Vijay Chauhan <vijay.chauhan@netapp.com>
> Signed-off-by: Sean Stewart <Sean.Stewart@netapp.com>
>
Acked-by: Hannes Reinecke <hare@suse.de>
Cheers,
Hannes
next prev parent reply other threads:[~2013-03-31 15:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-28 22:07 [PATCH] scsi_dh_alua: Add module parameter to allow failover to non preferred path without STPG Stewart, Sean
2013-03-31 16:24 ` Hannes Reinecke [this message]
2013-04-01 14:24 ` Ewan Milne
2013-04-01 21:18 ` Stewart, Sean
2013-04-02 12:38 ` Ewan Milne
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