Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932309AbWARFF7 (ORCPT ); Wed, 18 Jan 2006 00:05:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932317AbWARFF6 (ORCPT ); Wed, 18 Jan 2006 00:05:58 -0500 Received: from c-67-177-35-222.hsd1.ut.comcast.net ([67.177.35.222]:27777 "EHLO ns1.utah-nac.org") by vger.kernel.org with ESMTP id S932309AbWARFF6 (ORCPT ); Wed, 18 Jan 2006 00:05:58 -0500 Message-ID: <43CDC44E.6080808@wolfmountaingroup.com> Date: Tue, 17 Jan 2006 21:30:06 -0700 From: "Jeff V. Merkey" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040510 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Max Waterman Cc: linux-kernel@vger.kernel.org Subject: Re: io performance... References: <43CB4CC3.4030904@fastmail.co.uk> <43CDAFE3.8050203@fastmail.co.uk> In-Reply-To: <43CDAFE3.8050203@fastmail.co.uk> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 821 Lines: 31 Max Waterman wrote: > One further question. I get these messages 'in' dmesg : > > sda: asking for cache data failed > sda: assuming drive cache: write through > > How can I force it to be 'write back'? Forcing write back is a very bad idea unless you have a battery backed up RAID controller. Jeff > > Max. > - > To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/