From owner-freebsd-current@FreeBSD.ORG Wed May 5 13:20:11 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DBE8916A579; Wed, 5 May 2004 13:20:11 -0700 (PDT) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id 272A243D2F; Wed, 5 May 2004 13:20:11 -0700 (PDT) (envelope-from scottl@freebsd.org) Received: from freebsd.org (junior-wifi.samsco.home [192.168.0.11]) by pooker.samsco.org (8.12.10/8.12.10) with ESMTP id i45KOEu6028517; Wed, 5 May 2004 14:24:15 -0600 (MDT) (envelope-from scottl@freebsd.org) Message-ID: <40994C5C.1050904@freebsd.org> Date: Wed, 05 May 2004 14:19:40 -0600 From: Scott Long User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.6) Gecko/20040304 X-Accept-Language: en-us, en MIME-Version: 1.0 To: David Schultz References: <200405041825.i44IPgVa021573@ambrisko.com> <4097F9EA.1080904@DeepCore.dk> <20040505124349.GA612@VARK.homeunix.com> <40990479.6070809@DeepCore.dk> <20040505194949.GA2443@VARK.homeunix.com> <40994763.4090203@DeepCore.dk> <20040505200911.GA2752@VARK.homeunix.com> In-Reply-To: <20040505200911.GA2752@VARK.homeunix.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=0.0 required=3.8 tests=none autolearn=no version=2.63 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on pooker.samsco.org cc: =?us-ascii@FreeBSD.ORG cc: current@freebsd.org cc: iso-8859-1?Q?S=F8ren?= Schmidt Subject: Re: Updated SATA support patches for Intel ICH & Promise cards X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 05 May 2004 20:20:12 -0000 David Schultz wrote: > On Wed, May 05, 2004, Sren Schmidt wrote: > >>David Schultz wrote: >> >>>I have two SATA drives that are mirrored via ccd(4). The >>>mirroring apparently introduced some sort of race that led to >>>problems, which started when ATAng was committed. The specific >>>symptoms changed as the ata driver evolved, and varied from kernel >>>panics in the best case and data corruption in the worst case. >>>But the details of the problem aren't as important as the fact >>>that some aspect of Doug's patch fixes them! >> >>Have you considered using atacontrol to create an ATA RAID instead ? >>Does that work ? on an unpatched kernel ? > > > This is an Intel 875P motherboard, and I think the controller only > supports striping, not mirroring. If this is not the case, I'd > happily try it, although it would take a while for me to find the > time to back up and migrate my data if there are any > incompatibilities. The ICH5 controller on the southbridge has no concept of RAID. It's just a SATA/IDE controller. Your motherboard might have a BIOS that understands striping and/or mirroring the two SATA disks, but that is a purely software function and has nothing to do with the disk controllers. I find with much chagrin how effective the marketing campaigns are for software RAID these days ;-) Scott