From: Jeremy Sanders Subject: Re: fsck.ext4: Group descriptors look bad... trying backup blocks... Date: Mon, 20 Apr 2009 16:53:23 +0100 (BST) Message-ID: References: <49E8B5AD.6030907@redhat.com> <20090420113534.GR19186@mit.edu> <20090420124810.GT19186@mit.edu> <49EC8B97.6010308@redhat.com> <49EC9A11.1080105@redhat.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Theodore Tso , linux-ext4@vger.kernel.org To: Eric Sandeen Return-path: Received: from ppsw-1.csi.cam.ac.uk ([131.111.8.131]:55797 "EHLO ppsw-1.csi.cam.ac.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755656AbZDTPxY (ORCPT ); Mon, 20 Apr 2009 11:53:24 -0400 In-Reply-To: <49EC9A11.1080105@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Mon, 20 Apr 2009, Eric Sandeen wrote: > Eric Sandeen wrote: >> Theodore Tso wrote: >>> On Mon, Apr 20, 2009 at 12:43:37PM +0100, Jeremy Sanders wrote: >>>> It takes a day or two to do the sync. I've only done it twice (one with >>>> the old kernel, once with the new fedora testing kernel) and it happened >>>> both times. I'm afraid the statistics are rather low number here. >>>> >>>> I did a different faster test (just copying my home directory lots of >>>> times), but I wasn't able to get it to fail. That test didn't use much >>>> disk space, however. Maybe it's worth just dd'ing a few TB of data onto >>>> the device and seeing whether that fails. >>>> >>>> I didn't reboot this time - I did last time. I just unmounted the file >>>> system and fsckd it. The filesystem is 8.2TB and the data is around >>>> 2.5TB. >> >> I think trying a filesystem with just under 8T would be a useful test too. > > One other question - do you make use of xattrs on this filesystem? No. Jeremy -- Jeremy Sanders http://www-xray.ast.cam.ac.uk/~jss/ X-Ray Group, Institute of Astronomy, University of Cambridge, UK. Public Key Server PGP Key ID: E1AAE053