From owner-freebsd-current Tue Jan 7 9:13:46 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D8C2237B401 for ; Tue, 7 Jan 2003 09:13:44 -0800 (PST) Received: from encontacto.net (adsl-64-173-182-158.dsl.mtry01.pacbell.net [64.173.182.158]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8CFCD43EB2 for ; Tue, 7 Jan 2003 09:13:40 -0800 (PST) (envelope-from eculp@encontacto.net) Received: from localhost (localhost [127.0.0.1]) (uid 80) by encontacto.net with local; Tue, 07 Jan 2003 09:13:40 -0800 Received: from adsl-64-173-182-155.dsl.mtry01.pacbell.net (adsl-64-173-182-155.dsl.mtry01.pacbell.net [64.173.182.155]) by Mail.EnContacto.Net (IMP) with HTTP for ; Tue, 7 Jan 2003 09:13:39 -0800 Message-ID: <1041959619.3e1b0ac3deac9@Mail.EnContacto.Net> X-Priority: 3 (Normal) Date: Tue, 7 Jan 2003 09:13:39 -0800 From: eculp@encontacto.net To: Soeren Schmidt Cc: "current@FreeBSD.ORG" Subject: Re: mirrored root fs? References: <200301071611.h07GB9HZ057431@spider.deepcore.dk> In-Reply-To: <200301071611.h07GB9HZ057431@spider.deepcore.dk> MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Internet Messaging Program (IMP) 4.0-cvs X-Originating-IP: 64.173.182.155 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Quoting Soeren Schmidt : | man atacontrol :) I did that but it sounded too easy :) | | However if you want to use RAID1+0 and you want to be able to | boot from it you *need* a RAID capable controller BIOS, there is | no way to make a stock BIOS boot from a RAID0... | If you need it on install you probably also need at RAID capable | controller, if you define the RAID BIOS there, it will show up | in sysinstall.. The solution that pops into my mind is to have a small ad0 for boot and / partition. and ad1,ad2,ad3 as raid0+1 or ad1 and 2 as raid1 raid1 should solve my problem. Would either of these be configurable on sysinstall to have the /var and /usr partitions on the raid disks? If not that should be easy enough after a minimal install and reboot on ad0. | | > I haven't used vinum because of the root partition limitations and | > the complexity of the first configuration although I have been on the | > verge several times. BTW, is this an integration of vinum? To not | > have to be limited to hw raid by having similar flexibility and ease | > of use with software raid will be/is, IMO, fantastic. | | No, the RAID part of the ATA driver has nothing to do with vinum. | Vinum has several limitations that make it useless in this context. | Mainly that the RAID config layout on disk need to be of different | formats depending on what controller BIOS we have, and there is no | place to put all the extra volume stuff that vinum needs. | The ATA RAID code is very generic instead, with backends that converts | the internal RAID info to/from the needed info on disk depending | on controller type. Thanks for the clarification, Søren. Please forgive my basic, uninitiated questions. I really should probably have been paying more attention as these features were being added. ed ------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message