Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754603AbYCJBqz (ORCPT ); Sun, 9 Mar 2008 21:46:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753226AbYCJBqs (ORCPT ); Sun, 9 Mar 2008 21:46:48 -0400 Received: from ns2.g-housing.de ([81.169.133.75]:59326 "EHLO mail.g-house.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752237AbYCJBqr (ORCPT ); Sun, 9 Mar 2008 21:46:47 -0400 Date: Mon, 10 Mar 2008 02:46:38 +0100 (CET) From: Christian Kujau X-X-Sender: evil@sheep.housecafe.de To: David Chinner cc: LKML , xfs@oss.sgi.com, dm-devel@redhat.com Subject: Re: INFO: task mount:11202 blocked for more than 120 seconds In-Reply-To: <20080309213441.GQ155407@sgi.com> Message-ID: References: <20080307224040.GV155259@sgi.com> <20080309213441.GQ155407@sgi.com> User-Agent: Alpine 1.00 (DEB 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1161 Lines: 28 On Mon, 10 Mar 2008, David Chinner wrote: > Oh, dm-crypt. Well, I'd definitely start looking there. XFS has a > history of exposing dm-crypt bugs, and these hangs appear to be I/O > congestion/scheduling related and not XFS. Yeah, I noticed that too, thanks for verifying this: during the 2nd bisect run, the box locked up hard when I accessed the device-mapper. I'm using a wrapper script to set up my luks/dm-crypt devices and still have to find out which command exactly triggers the lockup. So, maybe the hard lockup and the hangs are not so unrelated after all...oh well. > Also, we haven't changed > anything related to plug/unplug of block devices in XFS recently, so > that also points to some other change as well... Thanks for your assistance, David, I really appreciate it. I'll try to find out more about this dm-crypt thingy.... Christian. -- BOFH excuse #396: Mail server hit by UniSpammer. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/