From owner-freebsd-fs@FreeBSD.ORG Fri Apr 20 20:47:12 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 BBEAA16A407 for ; Fri, 20 Apr 2007 20:47:12 +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 702B913C4C4 for ; Fri, 20 Apr 2007 20:47:12 +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 92B403B082 for ; Fri, 20 Apr 2007 22:27:37 +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 92496-14 for ; Fri, 20 Apr 2007 22:27:37 +0200 (CEST) Received: by keltia.freenix.fr (Postfix/TLS, from userid 101) id 2E91F3B070; Fri, 20 Apr 2007 22:27:37 +0200 (CEST) Date: Fri, 20 Apr 2007 22:27:37 +0200 From: Ollivier Robert To: freebsd-fs@freebsd.org Message-ID: <20070420202737.GA92793@keltia.freenix.fr> References: <20070420133854.G45782@nux.eros.office> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070420133854.G45782@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 20:47:12 -0000 According to Mike Wolman: > I'd like the ability to have gmirror do a more efficient re-silvering (or > re-syncing) of the mirror members when a planned disconnect occurs. This > would significantly reduce the mirror rebuild time for any component which > had been deactivated, for network mirrors using ggated devices this would > also reduce network usage and could be used for remote asynced mirrors > thus providing a live backup for laptops/workstations. Do you see that you are describing ZFS there? Considering the status of ZFS right now, I think it is not worth really trying to implement such scheme in gmirror. -- 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