From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bokhan Artem Subject: Re: [PATCH #upstream-fixes] sata_mv: don't issue two DMA commands concurrently Date: Thu, 14 Aug 2008 00:29:50 +0700 Message-ID: <48A31A0E.4010703@ngs.ru> References: <489C19CE.6030708@ngs.ru> <489C54D1.5080901@rtr.ca> <48A29E14.3090908@gmail.com> <48A2BBDC.2090201@ngs.ru> <48A2BC5D.5060801@gmail.com> <48A2C35C.7020400@ngs.ru> <48A2C460.6040504@gmail.com> <48A2C770.2040200@ngs.ru> <48A2CB1B.4000200@gmail.com> <48A2CE09.9090806@ngs.ru> <87f94c370808130957g5aa7ac0ax881de81af8e8f926@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtpout1.ngs.ru ([195.93.186.195]:41873 "EHLO smtpout1.ngs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756379AbYHMR34 (ORCPT ); Wed, 13 Aug 2008 13:29:56 -0400 In-Reply-To: <87f94c370808130957g5aa7ac0ax881de81af8e8f926@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Greg Freemyer Cc: Tejun Heo , linux-ide@vger.kernel.org I have particular fast, simple and cheap controller(s) (MV88SX6081 8-port SATA II PCI-X) with a bunch of disks w/o sw/hw raid. I need to return an error to application ASAP if media error detected. Greg Freemyer ?????: > > > Artem, > > I'm not sure what your goal is but you might find it interesting that > "Enterprise" versions of some of the drives have fast fail logic built > into them. ie. They don't internally retry on medium errors. > > As I understand it, the concept is if you have a raid setup, you don't > want to waste time retrying a read. It is better to fail the read > ASAP and get the data from another source. > > Greg >