[9237] in linux-scsi channel archive
concurrent commands to same LUN ?
daemon@ATHENA.MIT.EDU (Martin Peschke)
Mon Jul 24 12:15:17 2000
Date: Mon, 24 Jul 2000 18:07:39 +0200 (MET DST)
From: Martin Peschke <peschke@fh-brandenburg.de>
To: linux-scsi@vger.rutgers.edu
Message-ID: <Pine.GSO.4.10.10007241753330.5872-100000@zeus.fh-brandenburg.de>
MIME-Version: 1.0
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I am just wondering about select_queue_depths() and cmd_per_lun.
Is a HBA driver allowed to have more than one outstanding command at the
same LUN? Or is it responsible for command serialization?
I am just thinking about multiple paths in Fibre Channel environments
because of several FC adapters within a single host connected to the same
switched fabric. Are there cases where I can spread several commands to
the same LUN over multiple ports at the same time to (maybe) increase
performance?
Thanks.
Martin Peschke
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