From owner-freebsd-fs@FreeBSD.ORG Fri Apr 10 23:07:42 2015 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id DC78E42A for ; Fri, 10 Apr 2015 23:07:42 +0000 (UTC) Received: from mail-wi0-f182.google.com (mail-wi0-f182.google.com [209.85.212.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 73E123F7 for ; Fri, 10 Apr 2015 23:07:41 +0000 (UTC) Received: by widjs5 with SMTP id js5so25316108wid.1 for ; Fri, 10 Apr 2015 16:07:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=DdRov2gkdQiK9VrzMi/D8OUegBENC5Sf45bxWpQUEUQ=; b=Nl2ufdE2A6okaMB+RuQiG0L+XEaPiw2a2/XpSUQWAr/vgYeDOElE3wa7zhfe9YfarL dyh5AXOPorksmNVjjbOn1ca14tOQn6YGdRaxgIa45PqXbOt3iJWIPNJtkmvyOTUJqQRG 15rccNfanwBpKA2ZzoOwwyl+gJODvOnBw5mpjc8Te4iX35UoQ7nzfrre+zNymCS31gkP wmUuzDGgovIKgxeVudOx92S9a4bbkzO76m+tT+Ix/9t1FNm1reL7S/tpMwgJa1zw631B TcZqF+3iV49psgUx7om8Fe39P3qdbYpf/FS9HERMXQKwH9oGEXtAwmcTY82FT1fr79/d Hp7g== X-Gm-Message-State: ALoCoQnd9hoiRc+zmJUh0UVfpWcX53O+ea3OC6dWWExUB8KKZbD2b/9oCxPFUa9/cRX2wrojicOo X-Received: by 10.180.80.199 with SMTP id t7mr1765278wix.52.1428707254508; Fri, 10 Apr 2015 16:07:34 -0700 (PDT) Received: from [10.10.1.68] (82-69-141-170.dsl.in-addr.zen.co.uk. [82.69.141.170]) by mx.google.com with ESMTPSA id ch6sm292332wjc.3.2015.04.10.16.07.33 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 10 Apr 2015 16:07:33 -0700 (PDT) Message-ID: <552857B8.6040001@multiplay.co.uk> Date: Sat, 11 Apr 2015 00:07:36 +0100 From: Steven Hartland User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: freebsd-fs@freebsd.org Subject: Re: Migrating ZFS from 8.3 to 10.1 References: In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Apr 2015 23:07:42 -0000 We did moved from 8.3 -> 10.1 had to go via 10.0 as we did a in place source upgrade but had no issues. 10.x has block size validation which 8.3 so if your disks are 4k sectors and you didn't manually configure this on install you may end up with pools complaining about this, but that will just mean reduced performance (something you had already). Yes once your happy 10.1 is working fine you should upgrade your pools to get all the new features which are well worth having. Regards Steve On 10/04/2015 22:43, javocado wrote: > Hello, > > I am planning to migrate (upgrade) my system from FreeBSD 8.3 RELEASE to > 10.1 RELEASE (both amd64). My zfs pool exists on it's own physical > device(s) so my upgrade will consist of: > > 1. install FreeBSD 10.1 on boot device (in a temp system) > 2. remove 8.3 boot device (from production system) > 3. install new 10.1 boot device and boot up production system > 4. re-mount zfs FS > > My question is, what do I need to know about how this change will affect or > impact the zpool and datasets? Is there any chance zfs data could be lost > or destroyed? Might there be a performance loss due to version differences? > Is upgrading the zpool (once booted to 10.1) strongly advised? Any > downsides or dangers there? > > Some other info worth considering (production system): > > ZFS filesystem version 5 > ZFS storage pool version 28 > > Thanks! > _______________________________________________ > 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"