From owner-freebsd-stable@FreeBSD.ORG Fri Jun 3 22:31:23 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3DBCB16A420 for ; Fri, 3 Jun 2005 22:31:23 +0000 (GMT) (envelope-from karl@FS.denninger.net) Received: from FS.denninger.net (wsip-68-15-213-52.at.at.cox.net [68.15.213.52]) by mx1.FreeBSD.org (Postfix) with ESMTP id C944243D1D for ; Fri, 3 Jun 2005 22:31:22 +0000 (GMT) (envelope-from karl@FS.denninger.net) Received: from fs.denninger.net (localhost [127.0.0.1]) by FS.denninger.net (8.13.3/8.13.1) with SMTP id j53MVLGo060671 for ; Fri, 3 Jun 2005 17:31:21 -0500 (CDT) (envelope-from karl@FS.denninger.net) Received: from fs.denninger.net [127.0.0.1] by Spamblock-sys; Fri Jun 3 17:31:21 2005 Received: (from karl@localhost) by FS.denninger.net (8.13.3/8.13.1/Submit) id j53MVLAF060669 for freebsd-stable@freebsd.org; Fri, 3 Jun 2005 17:31:21 -0500 (CDT) (envelope-from karl) Date: Fri, 3 Jun 2005 17:31:21 -0500 From: Karl Denninger To: freebsd-stable@freebsd.org Message-ID: <20050603223121.GA60631@FS.denninger.net> Mail-Followup-To: freebsd-stable@freebsd.org References: <20050603222620.GA708@hiMolde.no> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050603222620.GA708@hiMolde.no> User-Agent: Mutt/1.4.2.1i Organization: Karl's Sushi and Packet Smashers X-Die-Spammers: Spammers cheerfully broiled for supper and served with ketchup! Subject: Re: RAID-1 as back-up X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Jun 2005 22:31:23 -0000 On Sat, Jun 04, 2005 at 12:26:20AM +0200, Hans F. Nordhaug wrote: > Dear list, > > I would like to use RAID-1 as a back-up solution. If one of the disk > breaks I would like my server to continue to run from the other disk. > I have followed the mailing list for a while and read some howtos, > but I'm not sure if this is possible (without doing all kinds of tricks > when the accidents happens - removing meta data and so on). In > addition, I thought, gvinum was the way to go, but hasn't there been > some problems with it (reported here lately)? I'm running 5.3 - what > do you recommend - gvinum, ccd, others? What is the definitive howto for > the recommend solution. Thx for your time. > > Regards, > Hans I do this using gmirror; I run a two-disk Raid1 system for normal operaton, and back up to a third device which a CRON job attaches and detaches nightly to image the system. The detached disk is removed, so it will not be detected as a valid device on boot. If the online mirror breaks (either disk) the other continues on its merry way. In a catastrophe where the system scribbles on BOTH disks, the other volume can be booted manually and with a bit of effort (couple of command-line entries from single user mode) brought online as a single device. -- -- Karl Denninger (karl@denninger.net) Internet Consultant & Kids Rights Activist http://www.denninger.net My home on the net - links to everything I do! http://scubaforum.org Your UNCENSORED place to talk about DIVING! http://www.spamcuda.net SPAM FREE mailboxes - FREE FOR A LIMITED TIME! http://genesis3.blogspot.com Musings Of A Sentient Mind