From owner-freebsd-fs@FreeBSD.ORG Fri Apr 20 22:52:47 2007 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id DA58B16A401 for ; Fri, 20 Apr 2007 22:52:47 +0000 (UTC) (envelope-from roberto@keltia.freenix.fr) Received: from keltia.freenix.fr (keltia.freenix.org [82.230.37.243]) by mx1.freebsd.org (Postfix) with ESMTP id 9339613C4BB for ; Fri, 20 Apr 2007 22:52:47 +0000 (UTC) (envelope-from roberto@keltia.freenix.fr) Received: from localhost (localhost [127.0.0.1]) by keltia.freenix.fr (Postfix/TLS) with ESMTP id 3EA4139496 for ; Sat, 21 Apr 2007 00:52:46 +0200 (CEST) Received: from keltia.freenix.fr ([127.0.0.1]) by localhost (keltia.freenix.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 95031-08 for ; Sat, 21 Apr 2007 00:52:45 +0200 (CEST) Received: by keltia.freenix.fr (Postfix/TLS, from userid 101) id D39833940C; Sat, 21 Apr 2007 00:52:45 +0200 (CEST) Date: Sat, 21 Apr 2007 00:52:45 +0200 From: Ollivier Robert To: freebsd-fs@freebsd.org Message-ID: <20070420225245.GA95270@keltia.freenix.fr> References: <20070420232209.G4559@nux.eros.office> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070420232209.G4559@nux.eros.office> X-Operating-System: MacOS X / Macbook Pro - FreeBSD 6.2 / Dell D820 SMP User-Agent: Mutt/1.5.14 (2007-02-12) X-Virus-Scanned: amavisd-new at keltia.freenix.fr Subject: Re: lazy mirror / live backup X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Apr 2007 22:52:47 -0000 According to Mike Wolman: > The problem with zfs is you cannot layer it as u can with the geom > classes. Yes and no. It is not as versatile as all geom classes I believe but on FreeBSD it is a geom provider. > For example if you want to create a failover zfs storage pool, if you make > the zfs pool out of gmirror devices with one being a local device and the > other being a ggatec device. You would then have your zfs raidz pool > replicated on a remote host. I do not think you can do this with zfs by > itself as you are not able to layer raidz pool ontop of a load of zfs > mirrors. On plain zfs yes, you can have that. zpool create tank raidz mirror da0 da1 mirror da2 da3 mirror da4 da5. (not tested) -- Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr Darwin sidhe.keltia.net Kernel Version 8.8.2: Thu Sep 28 20:43:26 PDT 2006 i386