From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 24 Jan 2002 14:50:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 24 Jan 2002 14:49:59 -0500 Received: from ns.ithnet.com ([217.64.64.10]:58386 "HELO heather.ithnet.com") by vger.kernel.org with SMTP id ; Thu, 24 Jan 2002 14:49:40 -0500 Date: Thu, 24 Jan 2002 20:49:38 +0100 From: Stephan von Krawczynski To: Sven Heinicke Cc: linux-kernel@vger.kernel.org Subject: Re: ReiserFS and RAID5 Message-Id: <20020124204938.39fa1960.skraw@ithnet.com> In-Reply-To: <15440.23830.178152.579775@abasin.nj.nec.com> In-Reply-To: <15440.22127.875361.718680@abasin.nj.nec.com> <20020124200645.53dca41c.skraw@ithnet.com> <15440.23830.178152.579775@abasin.nj.nec.com> Organization: ith Kommunikationstechnik GmbH X-Mailer: Sylpheed version 0.7.0 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 24 Jan 2002 14:14:30 -0500 (EST) Sven Heinicke wrote: > Software RAID .. Yes > > System got two: > > vendor_id : GenuineIntel > model name : Pentium III (Coppermine) > cpu MHz : 868.671 > cache size : 256 KB > > It's an ASLab system with 4 Ultra100 Cards each with 4 80G maxtor > drives. So with the video and network card the PCI slots are full. > The raid tools are raidtools-0.90-9mdk as shipped with Mandrake 7.2. Ok. If I get that right your report means that SW RAID5 is just broken, because if it wasn't reiserfs must have staid alive, but it just hung. I guess any other fs would have hung, too. And afterwards you simply fell into the obvious problem, that reiserfs must heavily rely on the underlying "hw" and gets completely confused if the lower layer is trashed for whatever reason. Is anybody out there that ever survived a hd crash in SW RAID5 config? (Meaning _without_ need to reboot) (I only try to figure out what is going on, because I am heavily interested in building RAID5 configs myself, and you would not want to touch components (SW or HW) in this case that you cannot not trust) Regards, Stephan