From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756094Ab2ICFoJ (ORCPT ); Mon, 3 Sep 2012 01:44:09 -0400 Received: from ipmail07.adl2.internode.on.net ([150.101.137.131]:37008 "EHLO ipmail07.adl2.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756013Ab2ICFnl (ORCPT ); Mon, 3 Sep 2012 01:43:41 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AsENAMxCRFB5LHJk/2dsb2JhbABFhRy1AgEBAn+BCIIgAQEEAScTHCMFCwgDDgouFCUDIROIBwW6ARSKeS9hfDSEYwOVWIk0hmeCdQ Date: Mon, 3 Sep 2012 15:43:27 +1000 From: Dave Chinner To: Christoph Hellwig Cc: Justin Piszcz , linux-m@kvack.org, linux-kernel@vger.kernel.org, xfs@oss.sgi.com Subject: Re: 3.5.2: moving files from xfs/disk -> nfs: radix_tree_lookup_slot+0xe/0x10 Message-ID: <20120903054327.GZ15292@dastard> References: <20120901231338.GE6896@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120901231338.GE6896@infradead.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Sep 01, 2012 at 07:13:38PM -0400, Christoph Hellwig wrote: > I'd suspect it's something with the actual radix tree code, Ccing > linux-mm in case they know more. I don't think it has anything to do with the radix tree code.... > On Mon, Aug 27, 2012 at 11:00:10AM -0400, Justin Piszcz wrote: > > Hi, > > > > Moving ~276GB of files (mainly large backups) and everything has > > seemed to lockup on the client moving data to the server, it is still > > in this state.. ..... > > [75716.705720] Call Trace: > > [75716.705729] [] ? radix_tree_lookup_slot+0xe/0x10 It's just a symbol that was found in the stack. The real trace is this: > > [75716.705747] [] schedule+0x24/0x70 > > [75716.705751] [] schedule_timeout+0x1a9/0x210 > > [75716.705764] [] wait_for_common+0xc0/0x150 > > [75716.705773] [] wait_for_completion+0x18/0x20 > > [75716.705777] [] writeback_inodes_sb_nr+0x77/0xa0 > > [75716.705785] [] writeback_inodes_sb+0x29/0x40 > > [75716.705788] [] __sync_filesystem+0x47/0x90 > > [75716.705791] [] sync_one_sb+0x1b/0x20 > > [75716.705795] [] iterate_supers+0xe1/0xf0 > > [75716.705798] [] sys_sync+0x2b/0x60 > > [75716.705802] [] system_call_fastpath+0x1a/0x1f > > [75836.701197] INFO: task sync:8790 blocked for more than 120 seconds. Which simply says that writeback of the dirty data at the time of the sync call has taken longer than 120s. Cheers, Dave. -- Dave Chinner david@fromorbit.com