From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754925Ab2JSVH3 (ORCPT ); Fri, 19 Oct 2012 17:07:29 -0400 Received: from li9-11.members.linode.com ([67.18.176.11]:56355 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754052Ab2JSVH2 convert rfc822-to-8bit (ORCPT ); Fri, 19 Oct 2012 17:07:28 -0400 Date: Fri, 19 Oct 2012 17:07:23 -0400 From: "Theodore Ts'o" To: Toralf =?iso-8859-1?Q?F=F6rster?= Cc: linux-ext4@vger.kernel.org, Linux Kernel Subject: Re: EXT4-fs error w/ external USB drive Message-ID: <20121019210723.GA4721@thunk.org> Mail-Followup-To: Theodore Ts'o , Toralf =?iso-8859-1?Q?F=F6rster?= , linux-ext4@vger.kernel.org, Linux Kernel References: <507C4BDA.20205@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <507C4BDA.20205@gmx.de> User-Agent: Mutt/1.5.21 (2010-09-15) Content-Transfer-Encoding: 8BIT X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on imap.thunk.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 15, 2012 at 07:46:02PM +0200, Toralf Förster wrote: > Even with current stable kernel 3.6.2 I sometimes get those syslog messages : > > > 2012-10-15T19:37:58.401+02:00 n22 kernel: EXT4-fs error (device sdb3): ext4_mb_generate_buddy:741: group 436, 22902 clusters in bitmap, 22901 in gd Have you run e2fsck to clean up the file system corruption? If you have, do you continually get these errors afterwards? You say this is an external USB disk; is there any possibility of the disk getting unmounted uncleanly due to the cable getting pulled out while the disk is still mounted, and then the disk getting remounted w/o having e2fsck run on the disk? - Ted