From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.62) (envelope-from ) id 1GzzyA-0004bR-PG for garchives@archives.gentoo.org; Thu, 28 Dec 2006 18:27:11 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.8/8.13.8) with SMTP id kBSIOXEq028787; Thu, 28 Dec 2006 18:24:33 GMT Received: from mail.nagafix.co.uk (mail.nagafix.co.uk [194.145.196.85]) by robin.gentoo.org (8.13.8/8.13.8) with ESMTP id kBSIOXMi022260 for ; Thu, 28 Dec 2006 18:24:33 GMT Received: from [10.0.1.2] (ANancy-151-1-79-153.w81-50.abo.wanadoo.fr [81.50.157.153]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) by mail.nagafix.co.uk (Postfix) with ESMTP id 43F27B14CB; Thu, 28 Dec 2006 18:24:32 +0000 (GMT) Subject: Re: [gentoo-amd64] SATA mdraid woes From: Antoine Martin To: gentoo-amd64@lists.gentoo.org Cc: Peter Humphrey In-Reply-To: <20061228180653.40B4A2B8ADF@smtp.nildram.co.uk> References: <20061228180653.40B4A2B8ADF@smtp.nildram.co.uk> Content-Type: text/plain Organization: Nagafix Ltd Date: Thu, 28 Dec 2006 18:17:16 +0000 Message-Id: <1167329836.3403.21.camel@localhost.localdomain> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-amd64@gentoo.org Reply-to: gentoo-amd64@lists.gentoo.org Mime-Version: 1.0 X-Mailer: Evolution 2.8.2.1 (2.8.2.1-2.fc6) Content-Transfer-Encoding: 7bit X-Archives-Salt: 4ba3c793-f7de-4084-a8c8-999fe68583c0 X-Archives-Hash: 27533272a03de1c6d68450bd0de4251d On Thu, 2006-12-28 at 18:06 +0000, Peter Humphrey wrote: > A few weeks ago I had a hardware problem, and the upshot is that I now have > a new motherboard, a SuperMicro H8DCE. I now can't boot my Gentoo system. I had a similar problem resulting from a similar upgrade. It was because of the order of the drives, which was different in the BIOS (as seen by grub) and the Linux kernel. mdadm should not care and it should be able to re-assemble the array no matter what the partitions are named (sdc|d instead of sda|b in my case) Some of the arrays were out of sync (I had mounted one of the raid-1 partitions separately for making a backup, etc) - booting using knoppix (or using a simple recovery ramdisk) allowed me to re-assemble them. Reboot, done. It can be useful to keep a ~200MB partition to install something small like Slackware/Busybox for emergencies, this would allow you to boot on a single drive and see what the kernel and mdadm tools make of your array. Hope this helps! Antoine -- gentoo-amd64@gentoo.org mailing list