From owner-freebsd-hackers@FreeBSD.ORG Thu Mar 27 06:00:49 2008 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 520BB106566B for ; Thu, 27 Mar 2008 06:00:49 +0000 (UTC) (envelope-from jdc@parodius.com) Received: from mx01.sc1.parodius.com (mx01.sc1.parodius.com [72.20.106.3]) by mx1.freebsd.org (Postfix) with ESMTP id 433878FC17 for ; Thu, 27 Mar 2008 06:00:49 +0000 (UTC) (envelope-from jdc@parodius.com) Received: by mx01.sc1.parodius.com (Postfix, from userid 1000) id 1694C1CC060; Wed, 26 Mar 2008 23:00:49 -0700 (PDT) Date: Wed, 26 Mar 2008 23:00:49 -0700 From: Jeremy Chadwick To: stef@memberwebs.com Message-ID: <20080327060049.GA47731@eos.sc1.parodius.com> References: <20080320131638.7E66B94C853@mx.npubs.com> <200803220937.33552.doconnor@gsoft.com.au> <20080322045846.58F8D94C804@mx.npubs.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080322045846.58F8D94C804@mx.npubs.com> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: freebsd-hackers@freebsd.org Subject: Re: Vital Patches for ataraid with Intel Matrix RAID (ICH7) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 Mar 2008 06:00:49 -0000 On Sat, Mar 22, 2008 at 04:58:47AM +0000, Stef Walter wrote: > Daniel O'Connor wrote: > > I have seen this bug in other ATA RAID implementations (VIA & Promise) > > too. From what I can tell this part of your patch is general to all ATA > > RAID arrays, right? > > Yes, a small part. The part that will write out the RAID information > (thus updating the generation) whenever the status changes, regardless > of whether that change takes place when the machine is off or not. > > Without testing, I can't be sure whether this solves the problem on > other ataraid devices. I have access to many boxes that have two disks, support native Intel MatrixRAID, and proper hot-swap backplanes. I also have access to a Promise TX4310 card, which I can hook up to said servers (vs. using the onboard ICH7). I should be able to reproduce failure scenarios (pulling disks while in a RAID-1 configuration, etc.) on those systems and report back here. Would that be ideal? -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |