From owner-freebsd-current@FreeBSD.ORG Wed Mar 4 20:00:03 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 4495C106566C for ; Wed, 4 Mar 2009 20:00:03 +0000 (UTC) (envelope-from rink@rink.nu) Received: from mx1.rink.nu (gloom.rink.nu [213.34.49.2]) by mx1.freebsd.org (Postfix) with ESMTP id EF0C58FC1A for ; Wed, 4 Mar 2009 20:00:02 +0000 (UTC) (envelope-from rink@rink.nu) Received: from localhost (localhost [127.0.0.1]) by mx1.rink.nu (Postfix) with ESMTP id 19C866D43B; Wed, 4 Mar 2009 21:00:11 +0100 (CET) X-Virus-Scanned: amavisd-new at rink.nu Received: from mx1.rink.nu ([213.34.49.2]) by localhost (gloom.rink.nu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6UYDWdpcEla2; Wed, 4 Mar 2009 21:00:07 +0100 (CET) Received: by mx1.rink.nu (Postfix, from userid 1000) id A66246D439; Wed, 4 Mar 2009 21:00:07 +0100 (CET) Date: Wed, 4 Mar 2009 21:00:07 +0100 From: Rink Springer To: d@delphij.net Message-ID: <20090304200007.GB22581@rink.nu> References: <200903041834.n24IYrTo011126@cwsys.cwsent.com> <49AED351.4050909@delphij.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49AED351.4050909@delphij.net> User-Agent: Mutt/1.5.18 (2008-05-17) 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 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 20:00:03 -0000 On Wed, Mar 04, 2009 at 11:15:29AM -0800, Xin LI wrote: > 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. One thing to note, if you intend to create zpools / zfs-es on CURRENT which should be readable on STABLE, you must use the -o version= parameter to create supported versions, i.e.: # zfs create -o version=1 ... # pool create -o version=6 ... This only applies to CURRENT, STABLE doesn't understand the 'version' parameter and will error out if you use it. Regards, -- Rink P.W. Springer - http://rink.nu "Chance favours the prepared mind" - Penn