From owner-freebsd-fs@FreeBSD.ORG Wed May 4 15:21:38 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 D850A1065672 for ; Wed, 4 May 2011 15:21:38 +0000 (UTC) (envelope-from kraduk@gmail.com) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id 64DB48FC14 for ; Wed, 4 May 2011 15:21:38 +0000 (UTC) Received: by wyf23 with SMTP id 23so1215889wyf.13 for ; Wed, 04 May 2011 08:21:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=XXhPHbPM5VI/aSEILoxAcJSjZAgPF3c4pY9A9/0bg2E=; b=mBGBSfyyyYRkBFql4T9Jb2rQrFPk0JyZkr57ndJVJd6QB+yQ7EjRKOcmwHak3RsjMc KkFR0AT2E8aUlny2LbTFpPsLR8qz+W0G4K71axQtlZUThcv3EzDByeITlFYN4BhQ9JvC c0hAETp7OzEhckzxq3VhJJp+IvovJ5Xi0kTVU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=crHlczAPf64FvdHpJh63zXI6y51wPe26XTtMF+aaFy0M0RmqUGhlKXtEFKszRmTFrL YDX9YOiULUp+hUV+WdGPGToql0fs6j7xccZaDfnwSFsUa6LCXxj2J+myB6BHGkELMi9F FW2BRvCkEl9+GKSP2p26X49EKNAXyavfbfexo= MIME-Version: 1.0 Received: by 10.216.143.74 with SMTP id k52mr1250647wej.0.1304522497179; Wed, 04 May 2011 08:21:37 -0700 (PDT) Received: by 10.216.15.73 with HTTP; Wed, 4 May 2011 08:21:37 -0700 (PDT) In-Reply-To: <20110504115540.GA88625@icarus.home.lan> References: <4DC13260.4020905@bytecamp.net> <20110504115540.GA88625@icarus.home.lan> Date: Wed, 4 May 2011 16:21:37 +0100 Message-ID: From: krad To: Jeremy Chadwick Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-fs@freebsd.org 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 15:21:38 -0000 On 4 May 2011 12:55, 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. > > -- > | Jeremy Chadwick jdc@parodius.com | > | Parodius Networking http://www.parodius.com/ | > | UNIX Systems Administrator Mountain View, CA, USA | > | Making life hard for others since 1977. PGP 4BD6C0CB | > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > Generally in production i would leave it on the old pool version for a while, until you are confident you are not having any issues. As previously stated you can then roll back more easily. When you are happy upgrade the pool.