From owner-freebsd-hackers@FreeBSD.ORG Wed Mar 8 17:51:47 2006 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F3CDF16A420 for ; Wed, 8 Mar 2006 17:51:46 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from mh1.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 746DF43D64 for ; Wed, 8 Mar 2006 17:51:41 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh1.centtech.com (8.13.1/8.13.1) with ESMTP id k27DBPCm076654; Tue, 7 Mar 2006 07:11:25 -0600 (CST) (envelope-from anderson@centtech.com) Message-ID: <440D867C.5030400@centtech.com> Date: Tue, 07 Mar 2006 07:11:24 -0600 From: Eric Anderson User-Agent: Thunderbird 1.5 (X11/20060112) MIME-Version: 1.0 To: Ashley Moran References: <200603071255.10729.work@ashleymoran.me.uk> In-Reply-To: <200603071255.10729.work@ashleymoran.me.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.87.1/1317/Tue Mar 7 00:06:47 2006 on mh1.centtech.com X-Virus-Status: Clean Cc: freebsd-hackers@freebsd.org Subject: Re: NetBSD disk backup over network X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Mar 2006 17:51:47 -0000 Ashley Moran wrote: > I just saw this slashdotted article: > http://ezine.daemonnews.org/200603/dermouse.html > > Just to satisfy my curiosity, is it the sort of thing that can be implemented > as a GEOM layer? The idea is bloody clever but sounds like a bit of a hack > right now. > You can already do this with GEOM. On your server node, create a sparse file using dd, that is the same size or bigger than the partition you would like to back up. Then set it up with ggated. Now, on your machine with the partition that needs mirroring (backing up), use ggatec to connect to the backup node's shared sparse file you previously created. Then, use gmirror to mirror your partition to the now local ggatec'ed device. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------