From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stephen Elliott" Subject: RE: 2nd Attempt - FSCK Errors Date: Sun, 5 May 2013 12:19:30 +0100 Message-ID: <002001ce4982$6a392870$3eab7950$@ntlworld.com> References: <007b01ce45ab$0ffc24f0$2ff46ed0$@ntlworld.com> <000f01ce47ec$ca7767c0$5f663740$@ntlworld.com> <20130503131421.GC32297@thunk.org> <002701ce4802$8c4e4fc0$a4eaef40$@ntlworld.com> <20130503152914.GE32297@thunk.org> <001601ce482e$07282510$15786f30$@ntlworld.com> <20130503213132.GA6032@thunk.org> Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: "'Andreas Dilger'" , To: "'Theodore Ts'o'" Return-path: Received: from mail-wi0-f174.google.com ([209.85.212.174]:47697 "EHLO mail-wi0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750814Ab3EELTY (ORCPT ); Sun, 5 May 2013 07:19:24 -0400 Received: by mail-wi0-f174.google.com with SMTP id m6so1778830wiv.13 for ; Sun, 05 May 2013 04:19:23 -0700 (PDT) In-Reply-To: <20130503213132.GA6032@thunk.org> Content-Language: en-gb Sender: linux-ext4-owner@vger.kernel.org List-ID: Understood... When I can get a debugfs dump from the device (following advice from Netgear) I will post but this may be in 2 or 3 weeks time. -----Original Message----- From: Theodore Ts'o [mailto:tytso@mit.edu] Sent: 03 May 2013 22:32 To: Stephen Elliott Cc: 'Andreas Dilger'; linux-ext4@vger.kernel.org Subject: Re: 2nd Attempt - FSCK Errors On Fri, May 03, 2013 at 07:42:55PM +0100, Stephen Elliott wrote: > One thing maybe you could explain (and Andreas gave me his take too) > is how you can multiply assigned blocks shared with "0" files. Andreas > offered the suggestion that they may be in the same file. If this were > really the case, I would suspect there to be some file corruption issues etc... It could be that the blocks appear multiple times in the file; or it could be the storage system is returning different data on subsequent reads from the device. What we need is a debugfs dump of the inode on the file system that is having trouble. A debugfs dump of the inode from a completely underlated file system is not useful.... - Ted