From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sub3.mail.dreamhost.com ([69.163.253.7]:44686 "EHLO homiemail-a11.g.dreamhost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755263AbaHAMpY (ORCPT ); Fri, 1 Aug 2014 08:45:24 -0400 Message-ID: <53DB8BDF.9020509@terrorise.me.uk> Date: Fri, 01 Aug 2014 13:45:19 +0100 From: Frankie Fisher MIME-Version: 1.0 To: linux-btrfs@vger.kernel.org Subject: Re: open_ctree failed on 3.16.0 References: <53DB64CF.7060601@terrorise.me.uk> In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms090305070902070108030603" Sender: linux-btrfs-owner@vger.kernel.org List-ID: This is a cryptographically signed message in MIME format. --------------ms090305070902070108030603 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable On 01/08/14 12:29, Duncan wrote: > Frankie Fisher posted on Fri, 01 Aug 2014 10:58:39 +0100 as excerpted: > >> A circuit breaker failed a few times and now I can't mount my btrfs >> volume - it fails with open_ctree failed: > >> >> What are the next steps I should try? Should I try btrfs-zero-log? Or >> should I try btrfsck? Or something else? > > The standard advice concerning btrfs check (aka btrfsck) is that runnin= g > it without --repair or similar won't hurt as in that case it's read-onl= y, > but by the same token, it won't help, except possibly to give you an id= ea > of what's wrong. fwiw, this is the output of btrfsck: http://cwillu.com:8080/86.136.116.221/2 > Thanks for the helpful info, I will work through it. It would be nice to = be able to recover the filesystem, but if I can't recover the filesystem = it wouldn't be the end of the world as I have a backup from a few days=20 before the incident. Even if I can't recover the filesystem, if=20 reporting this issue helps btrfs be more robust in the future that would = be a good outcome. To that end I have made a copy of the filesystem with = btrfs-image which I can supply if necessary. 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