From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1RkQnu-0001Lk-Nc for garchives@archives.gentoo.org; Tue, 10 Jan 2012 01:47:11 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id CC95A21C080; Tue, 10 Jan 2012 01:46:58 +0000 (UTC) Received: from oproxy3-pub.bluehost.com (oproxy3-pub.bluehost.com [69.89.21.8]) by pigeon.gentoo.org (Postfix) with SMTP id A9C1F21C029 for ; Tue, 10 Jan 2012 01:45:55 +0000 (UTC) Received: (qmail 16386 invoked by uid 0); 10 Jan 2012 01:45:54 -0000 Received: from unknown (HELO box347.bluehost.com) (69.89.31.147) by oproxy3.bluehost.com with SMTP; 10 Jan 2012 01:45:54 -0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lotussevencars.com; s=default; h=Mime-Version:Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Date:To:Reply-To:From:Subject:Message-ID; bh=MYU8WLmD0EOFxBmQIPFitutJbJhbZatk2KzBsy8Kh4I=; b=DAeh67GKgpeY6hGAQiAc9UIn8oGVFoDoJWPSNzdmHq4I8uLyBhfaoFWXD0UajsmBe9iGS9Kq7F9R7UnygMx6bCQl8tzkDQrvaRV/xreAIpoXqYK8dO+VG49GAVHyYziM; Received: from adsl-68-221-20-57.rmo.bellsouth.net ([68.221.20.57] helo=[192.168.1.65]) by box347.bluehost.com with esmtpsa (SSLv3:AES256-SHA:256) (Exim 4.76) (envelope-from ) id 1RkQmg-0005hJ-25 for gentoo-user@lists.gentoo.org; Mon, 09 Jan 2012 18:45:54 -0700 Message-ID: <1326141951.20929.8.camel@office-desktop.gateway.2wire.net> Subject: Re: [gentoo-user] How to get raid From: Jeff Cranmer To: gentoo-user@lists.gentoo.org Date: Mon, 09 Jan 2012 15:45:51 -0500 In-Reply-To: <4453289.h088Sfp3zX@localhost> References: <1325645839.4553.13.camel@laptop.limeyworld> <2000677.YtTZ8syHYz@localhost> <1325960824.4278.23.camel@laptop.limeyworld> <4453289.h088Sfp3zX@localhost> Content-Type: text/plain; charset="us-ascii" X-Mailer: Evolution 3.2.2 Content-Transfer-Encoding: 7bit Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 X-Identified-User: {793:box347.bluehost.com:lotussev:lotussevencars.com} {sentby:smtp auth 68.221.20.57 authed with jeff@lotussevencars.com} X-Archives-Salt: ea1f3ec7-f55d-45f3-b18e-af58addf04e3 X-Archives-Hash: a8f7b2bad57acd16d36346597248800f > > > > Me too. > > > > mdadm --detail /dev/md0 thinks that /dev/sdc1 is faulty. > > I'm not sure whether it's really faulty, or just that my setup for RAID > > is screwed up. > > > > How do I get rid of an existing /dev/md0? > > you stop it. Override the superblock with dd.. and lose all data on the disks. > > > > > > I'm thinking that I can try creating a RAID1 array using the two > > allegedly good disks and see if I can make that work. > > yeah > > > > > If that works, I'll get rid of it and try recreating the RAID1 with one > > good disk and the one that mdadm thinks is faulty. > > > > you don't have to. You can migrate a 2 disk raid1 to a 3 disk raid5. Howtos > are availble via google. > > > just saying - box in suspend to ram. I change the cable (and connector on > mobo) on a disk with two raid 1 partitions on it. > > One came back after starting the box. > > The other? Nothing I tried worked. At the end I dd'ed the partition.. and did > a complete 'faulty disk/replacement' resync.... > > argl. > > OK, so lesson learned. Just because it builds correctly in a RAID1 array, that doesn't mean that the drive isn't toast. I ran badblocks on the three drive components and, surprise, surprise, /dev/sdc came up faulty. I think I'll just build the two non-faulty drives as a RAID0 array until the hard drive prices come back down to pre-Thailand flood prices and backup regularly. Thanks for all the help. Jeff