From: "kaefert@gmail.com" Subject: Re: e2fsck extremly slow after: EXT4-fs.. ext4_check_descriptors: Checksum for group .. failed Date: Mon, 12 Nov 2012 17:29:31 +0100 Message-ID: References: <20121109000156.GQ19977@thunk.org> <20121112161646.GF4895@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: linux-ext4@vger.kernel.org To: "Theodore Ts'o" Return-path: Received: from mail-bk0-f46.google.com ([209.85.214.46]:36039 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751530Ab2KLQ3x (ORCPT ); Mon, 12 Nov 2012 11:29:53 -0500 Received: by mail-bk0-f46.google.com with SMTP id q16so157686bkw.19 for ; Mon, 12 Nov 2012 08:29:52 -0800 (PST) In-Reply-To: <20121112161646.GF4895@thunk.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: 2012/11/12 Theodore Ts'o : > > You said this is an external USB drive, right? How big is it? Yep, its an external USB3.0 3TB disk. > If it's affordable, something I would suggest doing is to make image copy > (i.e., using dd or dd_rescue) to another external USB drive, just to > rule out hardware issues. I'm sorry but I don't have a spare one of those lying around, but wouldn't I see hardware errors in the dmesg output? > > The Pass 1B/1C/1D errors, particularly if you are seeing the exact > same pattern after running a full e2fsck -fy run, makes me suspicious > that inode table blocks are getting written to the wrong location on > disk --- and whether this is caused by the storage device failing in > some strange way. > > Also, can you save the output of e2fsck to a file? Direct the output > to a log file, so I can look at it. There are patterns of the > "millions of entries of the same pattern" which you've elided which > can be a hint. Yep, no problem, I'll send you a complete output in an hour or two, when I'm home. I just omitted those since its really huge and it looked to me like if its only counting from the smallest number to the biggest, and skipping some numbers in between. > Also, can you disable the German translation to make > it easier for me to investigate? Could you tell me how to disable the German translations? sorry... > > Thanks, > > - Ted Thanks for looking into my issue! Regards, Thomas