From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mo4-p00-ob.smtp.rzone.de ([81.169.146.219]:63963 "EHLO mo4-p00-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755372AbaDPLMs (ORCPT ); Wed, 16 Apr 2014 07:12:48 -0400 Received: from fuchsia.localnet (p57A57371.dip0.t-ipconnect.de [87.165.115.113]) by smtp.strato.de (RZmta 32.35 DYNA|AUTH) with ESMTPSA id R07d03q3GBClAcz (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) for ; Wed, 16 Apr 2014 13:12:47 +0200 (CEST) From: Michael Schuerig To: linux-btrfs@vger.kernel.org Subject: Re: Copying a disk containing a btrfs filesystem Date: Wed, 16 Apr 2014 13:12:47 +0200 Message-ID: <2723219.5o4fQymcSy@fuchsia> In-Reply-To: <5347C663.4050704@swiftspirit.co.za> References: <4783411.VVGoQz5kVU@fuchsia> <5347C663.4050704@swiftspirit.co.za> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Friday 11 April 2014 12:39:31 Brendan Hide wrote: > If you're 100% happy with your old disk's *content*/layout/etc (just > not happy with the disk's reliability), try an > overnight/over-weekend ddrescue instead Thanks again to everyone who replied and especially for suggesting ddrescue. In the meantime, I've got a suitable new disk and copied the data to it using ddrescue (it took about 12 hours for 1TB). The disk had one fault extending over a few successive sectors. For some reason, I had to repair the first partition, which I use for swap. The large second with btrfs on it seems fine. I ran btrfs scrub on it and it found one error: Apr 16 09:48:27 fuchsia kernel: [ 6792.829186] btrfs: checksum error at logical 74443923456 on dev /dev/sdb2, sector 145398288, root 1228, inode 59102093, offset 929792, length 4096, links 1 (path: usr/lib/debug/.build-id/8f/b82df57b7b6fff7033f6abd7de914b82f98160.debug) That file is part of a "historical" snapshot which I have deleted by now and thus presumably dealt with the problem. Michael -- Michael Schuerig mailto:michael@schuerig.de http://www.schuerig.de/michael/