From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wakko Warner Subject: Re: mptsas problem Date: Mon, 14 Apr 2008 17:34:20 -0400 Message-ID: <20080414213420.GA13594@animx.eu.org> References: <20080413204910.GA19651@animx.eu.org> <0631C836DBF79F42B5A60C8C8D4E8229FBE34D@NAMAIL2.ad.lsil.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from animx.eu.org ([216.98.75.249]:37835 "EHLO animx.eu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751880AbYDNVeg (ORCPT ); Mon, 14 Apr 2008 17:34:36 -0400 Content-Disposition: inline In-Reply-To: <0631C836DBF79F42B5A60C8C8D4E8229FBE34D@NAMAIL2.ad.lsil.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: "Moore, Eric" Cc: James Bottomley , Richard Scobie , linux-scsi@vger.kernel.org Moore, Eric wrote: > On Sunday, April 13, 2008 2:49 PM, Wakko Warner wrote: > > > depth of 64 it may be queueing internally as well. You could try > > > lowering the lsi queue to 31 and seeing if it makes a difference. > > > > IIRC, someone said the LSIs does queue in firmware. > > It was probably me that told you that. Anyways, the lsiutil 100 > output you sent me last week indicated youre controller has NCQ > disabled. You need new firmware and controller chip rev in order to > support NCQ. You should contact LSI support to obtain which versions of > firmware and chip rev that is required. Meanwhile your controller will > queuing commands for SATA, only sending one command across the wire at a > time. For SAS, you will not have this issue. Does "chip rev" mean software/firmware or an actual chip? Is there anyway the driver can see this and set the queue_depth to 1? -- Lab tests show that use of micro$oft causes cancer in lab animals Got Gas???