From owner-freebsd-hackers@FreeBSD.ORG Tue Mar 7 13:43:51 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 C36A816A422 for ; Tue, 7 Mar 2006 13:43:51 +0000 (GMT) (envelope-from ticso@cicely12.cicely.de) Received: from ant.bwct.de (ant.bwct.de [85.159.14.68]) by mx1.FreeBSD.org (Postfix) with ESMTP id D43C843D45 for ; Tue, 7 Mar 2006 13:43:50 +0000 (GMT) (envelope-from ticso@cicely12.cicely.de) Received: from cicely5.cicely.de ([10.1.1.7]) by ant.bwct.de (8.12.11/8.12.11) with ESMTP id k27Dhlwf007807; Tue, 7 Mar 2006 14:43:47 +0100 (CET) Received: from cicely12.cicely.de (cicely12.cicely.de [10.1.1.14]) by cicely5.cicely.de (8.13.4/8.13.4) with ESMTP id k27DhgRI034870 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 7 Mar 2006 14:43:42 +0100 (CET) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (localhost [127.0.0.1]) by cicely12.cicely.de (8.13.4/8.13.3) with ESMTP id k27Dhfts003683; Tue, 7 Mar 2006 14:43:41 +0100 (CET) (envelope-from ticso@cicely12.cicely.de) Received: (from ticso@localhost) by cicely12.cicely.de (8.13.4/8.13.3/Submit) id k27Dheqb003682; Tue, 7 Mar 2006 14:43:40 +0100 (CET) (envelope-from ticso) Date: Tue, 7 Mar 2006 14:43:40 +0100 From: Bernd Walter To: babkin@users.sourceforge.net Message-ID: <20060307134339.GE676@cicely12.cicely.de> References: <2833016.1141737440654.JavaMail.root@vms070.mailsrvcs.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2833016.1141737440654.JavaMail.root@vms070.mailsrvcs.net> X-Operating-System: FreeBSD cicely12.cicely.de 5.4-STABLE alpha User-Agent: Mutt/1.5.9i X-Spam-Status: No, score=-5.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.0.4 X-Spam-Report: * -3.3 ALL_TRUSTED Did not pass through any untrusted hosts * -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% * [score: 0.0000] X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on cicely12.cicely.de Cc: freebsd-hackers@freebsd.org, Ashley Moran Subject: Re: NetBSD disk backup over network X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Mar 2006 13:43:51 -0000 On Tue, Mar 07, 2006 at 07:17:20AM -0600, Sergey Babkin wrote: > >From: Ashley Moran > > >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. > > Well, I've been running around with this kind of idea for > around 10 years now. Never actually implemented it though. > I can't quite believe that encryption at full disk speeds > makes no noticeable CPU overhead. This sounds as nothing more than a mirror with one disk beeing a remote file. And this is not really a new idea - remote mirror has a long standing tradition. You can already configure these things with GEOM right now. But this is in no way a backup, this just saves you from disk failures which is the purpose of a mirror. What is missing is history in the remote image so that one can access older contents. -- B.Walter http://www.bwct.de http://www.fizon.de bernd@bwct.de info@bwct.de support@fizon.de