Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757425Ab1D1Woq (ORCPT ); Thu, 28 Apr 2011 18:44:46 -0400 Received: from cantor2.suse.de ([195.135.220.15]:33338 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751506Ab1D1Woo (ORCPT ); Thu, 28 Apr 2011 18:44:44 -0400 Subject: Re: [BUG] fatal hang untarring 90GB file, possibly writeback related. From: James Bottomley To: Jan Kara Cc: Colin Ian King , Chris Mason , linux-fsdevel , linux-mm , linux-kernel , linux-ext4 , mgorman@novell.com In-Reply-To: <20110428224038.GG1696@quack.suse.cz> References: <1303926637.2583.17.camel@mulgrave.site> <1303934716.2583.22.camel@mulgrave.site> <1303990590.2081.9.camel@lenovo> <1303993705-sup-5213@think> <1303998140.2081.11.camel@lenovo> <1303998300-sup-4941@think> <1303999282.2081.15.camel@lenovo> <20110428142551.GD1696@quack.suse.cz> <20110428143329.GE1696@quack.suse.cz> <1304002701.2081.21.camel@lenovo> <20110428224038.GG1696@quack.suse.cz> Content-Type: text/plain; charset="UTF-8" Date: Thu, 28 Apr 2011 17:44:39 -0500 Message-ID: <1304030679.2598.43.camel@mulgrave.site> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 604 Lines: 18 On Fri, 2011-04-29 at 00:40 +0200, Jan Kara wrote: > James in the meantime identified that cgroups are somehow involved. > Are you > using systemd by any chance? Maybe cgroup IO throttling screws us? Yes, this is a FC15 system with systemd as the default. See related post: it looks like disabling the memory controller is what makes this go away. James -- 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/