From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261517AbVCEJHD (ORCPT ); Sat, 5 Mar 2005 04:07:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261159AbVCEJHD (ORCPT ); Sat, 5 Mar 2005 04:07:03 -0500 Received: from smtprelay02.ispgateway.de ([80.67.18.14]:6844 "EHLO smtprelay02.ispgateway.de") by vger.kernel.org with ESMTP id S261517AbVCEJGi convert rfc822-to-8bit (ORCPT ); Sat, 5 Mar 2005 04:06:38 -0500 Date: Sat, 5 Mar 2005 10:06:37 +0100 From: Florian Engelhardt To: linux-kernel@vger.kernel.org Cc: Brad Campbell Subject: Re: freezes with reiser4 in a raid1 with 2.6.11-rc5-mm1 Message-ID: <20050305100637.3aa6e1b8@discovery.hal.lan> In-Reply-To: <422597C3.5020207@wasp.net.au> References: <1109758204.422590fca7872@domainfactory-webmail.de> <422597C3.5020207@wasp.net.au> X-Mailer: Sylpheed-Claws 1.0.1cvs11.1 (GTK+ 2.6.4; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello, On Wed, 02 Mar 2005 14:38:59 +0400 Brad Campbell wrote: > Florian Engelhardt wrote: > > > > I activated the raid (/dev/md0), then mounted it, and after > > that i was starting nfs. I was able to mount the share > > on my desktop, creating direcrotys was no problem, but > > as soon as i was copying a file to the share, the server > > freezed. > > Creating files localy (while loged in via ssh) is leading > > to the process is staying in state D. > > Sometimes, when i start nfsd, the system reboots immediately, > > sometimes not. > > At the momment, most of the processes are in state D, reboot > > does not work, and i am not at home, so i am unable to reboot > > the machine manualy. > > Neat trick which I only discovered in desparation last week when > battling a RAID lockup on the -rc4-mm1 kernel on a remote box. > > I was also having hard lockup issues, but reseating all my PCI cards > appear to have rectified that one. Well, there are not much PCI-Cards in this server and reseating them didnt fix it. > As root. echo b > /proc/sysrq-trigger > > Of course only if you have alt-sysrq built in. Thanks for that, i was able to reboot the machine with that trick, but i couldnt find anything bad in the messages file. I made some further tests with the server: Deactivating the raid, and formating the hd´s (hdc and hdd) with reiser4, mounting them and sharing them via nfs and ftp worked great, no freezes, no reboots, everything perfect, even the performance. But as soon, as i activated the raid, the server freezed, or rebooted. Maybe this problem is not a bug in a single component (eg: nfs or reiser4), i think it is the combination of linux raid with reiser4, but i dont know. I will try to get the raid up and running with ext3 and/or jfs. Then we know exactly, if it is the combination of raid and reiser4. Kind regards Florian Engelhardt -- "I may have invented it, but Bill made it famous" David Bradley, who invented the (in)famous ctrl-alt-del key combination