From owner-freebsd-current@FreeBSD.ORG Wed Mar 4 19:15:45 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 14207106566B for ; Wed, 4 Mar 2009 19:15:45 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from tarsier.delphij.net (delphij-pt.tunnel.tserv2.fmt.ipv6.he.net [IPv6:2001:470:1f03:2c9::2]) by mx1.freebsd.org (Postfix) with ESMTP id AD9368FC16 for ; Wed, 4 Mar 2009 19:15:44 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from tarsier.geekcn.org (tarsier.geekcn.org [211.166.10.233]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by tarsier.delphij.net (Postfix) with ESMTPS id 3439D28448 for ; Thu, 5 Mar 2009 03:15:43 +0800 (CST) Received: from localhost (tarsier.geekcn.org [211.166.10.233]) by tarsier.geekcn.org (Postfix) with ESMTP id 11AD8EB3DD9; Thu, 5 Mar 2009 03:15:42 +0800 (CST) X-Virus-Scanned: amavisd-new at geekcn.org Received: from tarsier.geekcn.org ([211.166.10.233]) by localhost (mail.geekcn.org [211.166.10.233]) (amavisd-new, port 10024) with ESMTP id EVcoPVQr2A+f; Thu, 5 Mar 2009 03:15:34 +0800 (CST) Received: from charlie.delphij.net (adsl-76-237-33-62.dsl.pltn13.sbcglobal.net [76.237.33.62]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tarsier.geekcn.org (Postfix) with ESMTPSA id 7D442EB0E26; Thu, 5 Mar 2009 03:15:32 +0800 (CST) DomainKey-Signature: a=rsa-sha1; s=default; d=delphij.net; c=nofws; q=dns; h=message-id:date:from:reply-to:organization:user-agent: mime-version:to:cc:subject:references:in-reply-to: x-enigmail-version:openpgp:content-type:content-transfer-encoding; b=d34IvclqXk5s75AxqPzBMnFs/1aPfSu8HI0vZaqeu7LENmC8REG+GV9IdukIxLae3 pZimhfuNBr1YXmE3CthHQ== Message-ID: <49AED351.4050909@delphij.net> Date: Wed, 04 Mar 2009 11:15:29 -0800 From: Xin LI Organization: The FreeBSD Project User-Agent: Thunderbird 2.0.0.19 (X11/20090217) MIME-Version: 1.0 To: Cy Schubert References: <200903041834.n24IYrTo011126@cwsys.cwsent.com> In-Reply-To: <200903041834.n24IYrTo011126@cwsys.cwsent.com> X-Enigmail-Version: 0.95.7 OpenPGP: id=18EDEBA0; url=http://www.delphij.net/delphij.asc Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org Subject: Re: Sharing ZFS Zpools and Filesystems Between 7.1-STABLE and 8.0-CURRENT X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: d@delphij.net List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Mar 2009 19:15:45 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cy Schubert wrote: > Would unwise to use the same ZFS zpools on a 7.1 and 8.0 system, at > different times of course? I've done this on my testbed without any > repercussions however I don't really care if I lose data on my testbed. I'm > about to attempt this on my laptop which does contain data I do want to > keep. Given that the ZFS code in -STABLE and -CURRENT are to a degree > different, would there be any risk? If so can I manage that risk in any way? As a general rule, always backup data that you care. I have not encountered any problem using zpool that is shared between 7.1 and 8.0. What you should pay attention to is that never do 'zpool upgrade' nor 'zfs upgrade' on 8.0 system until you have decided that you won't use 7.1 anymore. Cheers, - -- Xin LI http://www.delphij.net/ FreeBSD - The Power to Serve! -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.10 (FreeBSD) iEYEARECAAYFAkmu01EACgkQi+vbBBjt66AM5ACgp/xHQv0EHQczcOx/89ckEEyv 4xsAnjrmS6j5wYAfeRtMz/oAKS+qCzNP =UMd7 -----END PGP SIGNATURE-----