From owner-freebsd-fs@FreeBSD.ORG Wed May 4 21:53:23 2011 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 22E36106567A for ; Wed, 4 May 2011 21:53:23 +0000 (UTC) (envelope-from mad@madpilot.net) Received: from megatron.madpilot.net (megatron.madpilot.net [88.149.173.206]) by mx1.freebsd.org (Postfix) with ESMTP id B39C68FC20 for ; Wed, 4 May 2011 21:53:22 +0000 (UTC) Received: from megatron.madpilot.net (localhost [127.0.0.1]) by megatron.madpilot.net (Postfix) with ESMTP id D468D1E73 for ; Wed, 4 May 2011 23:53:21 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=madpilot.net; h= content-transfer-encoding:content-type:content-type:in-reply-to :references:subject:subject:mime-version:user-agent:from:from :date:date:message-id:received:received; s=mail; t=1304545999; x=1306360399; bh=yVNqxY5A4TpzlaJQWHCs0kK/5P/EyTV+uYWV/XcbK3I=; b= IEC80IaegZVyw6xBLoGcwyUPfSs/Nu1s8pMHJNeN9H7LY5fsstCO5I25E3PdVCwf pHYEJx9x8aPR4GcoWeBAeuLEr5gUw+6E45y2zqREeru17n0niS8AANRpoMezNuie G9s/7MxBsClXJRgdMxhu2yV/Bc5uaSDJWxDYoIGySDo= X-Virus-Scanned: amavisd-new at madpilot.net Received: from megatron.madpilot.net ([127.0.0.1]) by megatron.madpilot.net (megatron.madpilot.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uoRNHTnq+exG for ; Wed, 4 May 2011 23:53:19 +0200 (CEST) Received: from marvin.madpilot.net (localhost [127.0.0.1]) by megatron.madpilot.net (Postfix) with ESMTP for ; Wed, 4 May 2011 23:53:19 +0200 (CEST) Message-ID: <4DC1CACF.8050506@madpilot.net> Date: Wed, 04 May 2011 23:53:19 +0200 From: Guido Falsi User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.17) Gecko/20110429 Lightning/1.0b2 Thunderbird/3.1.10 MIME-Version: 1.0 To: freebsd-fs@freebsd.org References: <4DC13260.4020905@bytecamp.net> <20110504115540.GA88625@icarus.home.lan> In-Reply-To: <20110504115540.GA88625@icarus.home.lan> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: zfs/zpool upgrade required? 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: Wed, 04 May 2011 21:53:23 -0000 On 05/04/11 13:55, Jeremy Chadwick wrote: > On Wed, May 04, 2011 at 01:02:56PM +0200, Robert Schulze wrote: >> when upgrading from 8.0 to 8-STABLE, kernel and userland support new >> versions of ZFS pool and filesystem. >> >> Is it _required_ to upgrade existing pools and filesystems or can >> that be done anytime later? > > - It can be done later, though by not upgrading you lose the ability to > use newer features. For a list of what those are, refer to the > official OpenSolaris docs. See menu on left side, near bottom: > > http://hub.opensolaris.org/bin/view/Community+Group+zfs/whatis > > - Make sure to note that the pool version and the filesystem version are > separate. Some folks remember to "zpool upgrade" but not "zfs upgrade". > > - Remember that upgrading is one-way; you cannot roll back to an older > version without destroying your pools. If you're worried, do full > backups beforehand. > I'd add, if he's booting off of zfs, that it is very important to upgrade the boot code as soon as he upgrades the pool or he will have trouble booting the system which could be a pain to recover at that point. -- Guido Falsi