Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262038AbUAIPhM (ORCPT ); Fri, 9 Jan 2004 10:37:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262040AbUAIPhM (ORCPT ); Fri, 9 Jan 2004 10:37:12 -0500 Received: from dial249.pm3abing3.abingdonpm.naxs.com ([216.98.75.249]:10883 "EHLO animx.eu.org") by vger.kernel.org with ESMTP id S262038AbUAIPhK (ORCPT ); Fri, 9 Jan 2004 10:37:10 -0500 Date: Fri, 9 Jan 2004 10:49:55 -0500 From: Wakko Warner To: Guennadi Liakhovetski Cc: linux-kernel@vger.kernel.org Subject: Re: Strange lockup with 2.6.0 Message-ID: <20040109104955.B6840@animx.eu.org> References: <20040109093913.A6710@animx.eu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.3i In-Reply-To: ; from Guennadi Liakhovetski on Fri, Jan 09, 2004 at 04:18:43PM +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2072 Lines: 51 Guennadi Liakhovetski wrote: > On Fri, 9 Jan 2004, Wakko Warner wrote: > > > I usually do a backup of each filesystem simply using tar. I attempted to > > backup a machine I had that's running 2.6.0 and it hard locked. > > Are sysrq-keys enabled? If so, could you catch the tar backtrace during > the lock-up (ALT-SysRq-t)? What was the latest kernel-version that worked? Yes, but the machine hard locks. sysrq does not work. I have a small utility I wrote that will set the state of the parport (I used this to tell if it locks up) using outb to the port (This does not effect it in anyway, it will lockup w/o it running) This is also the first time I backed up this machine. 2.6.0 is the first kernel I installed on it. I can test 2.4.23 later. > Can you just try to write some data over NFS? Would it lock if you write 1 I am constantly accessing NFS with this machine. Read and write. It was only when I backed it up with tar. In the event it doesn't lock, tar crashes w/o error/warning (over NFS). > byte or 1K or 1M? Does it lock immediately as you start the backup or It locks up usually at one point, but not always. > after some time (you could start some process in the background > periodically printing some info on the terminal, like vmstat, cat > /proc/interrupts, free, tcpdump on both ends to a file...) Can you try NFS I can do this I think. It's fun when running with init being bash. It will take some time to do since I can't scroll backwards. > over TCP? Are other machines, where backup works, also running 2.6, I can try TCP, but I'm not sure about the server accepting TCP (was there a compile time option for NFSD to use TCP?) These 2 machines are the only ones I have on 2.6. > 10/100mbps? 100 FD always. -- Lab tests show that use of micro$oft causes cancer in lab animals - 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/