From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752899Ab3LMQXL (ORCPT ); Fri, 13 Dec 2013 11:23:11 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44170 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752125Ab3LMQXJ (ORCPT ); Fri, 13 Dec 2013 11:23:09 -0500 Date: Fri, 13 Dec 2013 11:22:28 -0500 From: Dave Jones To: Christoph Hellwig Cc: Dave Chinner , Linux Kernel , xfs@oss.sgi.com Subject: Re: XFS / writeback invoking soft lockup. Message-ID: <20131213162228.GA29908@redhat.com> Mail-Followup-To: Dave Jones , Christoph Hellwig , Dave Chinner , Linux Kernel , xfs@oss.sgi.com References: <20131213071407.GA6527@redhat.com> <20131213104853.GS10988@dastard> <20131213111639.GD23546@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131213111639.GD23546@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 Fri, Dec 13, 2013 at 03:16:39AM -0800, Christoph Hellwig wrote: > On Fri, Dec 13, 2013 at 09:48:53PM +1100, Dave Chinner wrote: > > All I can say is that there doesn't look to be any obvious signs > > that this is a XFS or writeback problem fom the stack trace, and > > without more information or a reproducable test case I'm not going > > to be able to understand the cause. > > > > Is the problem reproducable, or is it just a one-off? > > If it's reproducable it would be good to enable the xfs_writepage > tracepoint and get a trace-cmd log of it. I hit it pretty reliably last night. I'll make a note to look into it on monday with that enabled. Dave