From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751720Ab1GUJ2K (ORCPT ); Thu, 21 Jul 2011 05:28:10 -0400 Received: from mail.bbaw.de ([194.95.188.6]:46218 "EHLO mail.bbaw.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750834Ab1GUJ2H (ORCPT ); Thu, 21 Jul 2011 05:28:07 -0400 Date: Thu, 21 Jul 2011 11:28:04 +0200 From: Lars =?UTF-8?B?VMOkdWJlcg==?= To: Michael Brade Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.39, 3.0.0-rc7+: complete system freeze with rsync on big directory Message-Id: <20110721112804.7aa0043d.taeuber@bbaw.de> In-Reply-To: <201107211119.15496.brade@informatik.uni-muenchen.de> References: <201107211119.15496.brade@informatik.uni-muenchen.de> X-Mailer: Sylpheed 3.1.0 (GTK+ 2.24.4; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-AntiVirus: checked by Avira MailGate (version: 2.1.4-7; AVE: 7.9.6.18; VDF: 7.11.12.27; host: mailhub); id=27012-GmO9v5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Michael, I'm just curious, because I have troubles with storage IO too. Am Thu, 21 Jul 2011 11:19:15 +0200 Michael Brade schrieb: > Hi, > > this is perfectly reproducible: with vanilla 2.6.39.x and 3.0.0 from > yesterday's git my system completely freezes after a minute or so when I do > > rsync -cavSH -n /source/ /dest/ > > Watching htop, it freezes only after the caches are full but not > immediately when the caches are full. No Alt-SysRq-magic is working > anymore, nothing responds at all after the freeze. This is on tty1, no X > server running. > > Note the -n which means dry run. I also mounted both directories read-only, > so it's not the write commands. I am using XFS on both directories, one is > mounted with iscsi, the other is local and encrypted with loop-aes. The > directory size is >20 GB, 4000-6000 files. I first noticed it when a > cp -a /source /dest froze the system. > > When I go back to 2.6.37.6 it works fine. I didn't try 2.6.38 yet. > > I am running this on a Dell Vostro, amd64, 6 GB RAM, 8x Intel Core i7 CPU Q > 740 @ 1.73GHz. > > Any ideas how to debug this despite the freeze? Do you need my kernel > config? Do you need any other info? Please CC me. Could you try to capture the log via serial console? (linux/Documentation/serial-console.txt) What kind of disks/controller/driver do you use? Lars