From owner-freebsd-stable@FreeBSD.ORG Sun Jun 2 14:03:10 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 96964DF4 for ; Sun, 2 Jun 2013 14:03:10 +0000 (UTC) (envelope-from prvs=186543ef20=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id 25A261363 for ; Sun, 2 Jun 2013 14:03:09 +0000 (UTC) Received: from r2d2 ([82.69.141.170]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50004126202.msg for ; Sun, 02 Jun 2013 15:03:03 +0100 X-Spam-Processed: mail1.multiplay.co.uk, Sun, 02 Jun 2013 15:03:03 +0100 (not processed: message from valid local sender) X-MDDKIM-Result: neutral (mail1.multiplay.co.uk) X-MDRemoteIP: 82.69.141.170 X-Return-Path: prvs=186543ef20=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-stable@freebsd.org Message-ID: <7ABBEE71A96E411793E41BD97DA72BCE@multiplay.co.uk> From: "Steven Hartland" To: "Alban Hertroys" , References: Subject: Re: Corrupt GPT header on disk from twa array - fixable? Date: Sun, 2 Jun 2013 15:02:58 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 02 Jun 2013 14:03:10 -0000 Does "gpart recover ada4" help at all? Be warned this could edit the partition on the disk and make it worse, but I've had success in the past with it. Regards Steve ----- Original Message ----- From: "Alban Hertroys" To: Sent: Sunday, June 02, 2013 2:53 PM Subject: Corrupt GPT header on disk from twa array - fixable? > Hello list, > > I just replaced my home server and moved the disks from the old one over to the new one. In the old server, 4 of the disks were > connected to a twa (3Ware 9550) controller, which of course has it's own way of marking units/volumes on those disks. > > Before you start yelling at me, yes, of course I made backups ;) [*] > > The thing is, I have these disks in the new server and I found that I (to my surprise) I can actually mount them! But, I'm > missing a large part and I am wondering if there's some method to access those last partitions too. > > Here's what gpart show says about the problematic disk: > > # gpart show /dev/ada4 > => 34 41942972 ada4 GPT (931G) [CORRUPT] > 34 128 1 freebsd-boot (64k) > 162 1048448 2 freebsd-ufs (512M) > 1048610 6291456 3 freebsd-swap (3.0G) > 7340066 1048576 4 freebsd-ufs (512M) > 8388642 2097152 5 freebsd-ufs (1.0G) > 10485794 31457211 6 freebsd-ufs (15G) > 41943005 1 - free - (512B) > > As you can see, most (about 910GB) of the disk is missing! This disk was one half of a mirror on the twa controller, which had > those disks split in two again (I don't recall how, perhaps 2 different BSD slices?) > I already looked if that part may perhaps have ended up as a different device. On the old server, fstab was this: > > # cat /tmp/solfertje/etc/fstab > # Device Mountpoint FStype Options Dump Pass# > > # These are the partitions listed above in gpart > /dev/da0p2 / ufs rw 1 1 > /dev/da0p3 none swap sw 0 0 > /dev/da0p4 /var ufs rw 2 2 > /dev/da0p5 /tmp ufs rw 2 2 > /dev/da0p6 /usr ufs rw 2 2 > > # These are missing > /dev/da1p1 /home ufs rw 2 2 > /dev/da1p2 /media ufs rw 2 2 > > # These are on a different disk (ada2) > /dev/da2p1 /media2 ufs rw 2 2 > > > I don't _really_ need to get to those partitions, but it would be a comfortable thought if it were possible somehow. > > > [*] The reason I was trying to access those disks anyway is that I thought I forgot to backup my database tables, but it turns > out I had just misplaced that backup and it has been restored now. > > Alban Hertroys > -- > If you can't see the forest for the trees, > cut the trees and you'll find there is no forest. > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.