From: Theodore Ts'o Subject: Re: EXT4-fs error w/ external USB drive Date: Fri, 19 Oct 2012 17:07:23 -0400 Message-ID: <20121019210723.GA4721@thunk.org> References: <507C4BDA.20205@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-ext4@vger.kernel.org, Linux Kernel To: Toralf =?iso-8859-1?Q?F=F6rster?= Return-path: Content-Disposition: inline In-Reply-To: <507C4BDA.20205@gmx.de> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org On Mon, Oct 15, 2012 at 07:46:02PM +0200, Toralf F=F6rster wrote: > Even with current stable kernel 3.6.2 I sometimes get those syslog me= ssages : >=20 >=20 > 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, 2290= 1 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