From owner-freebsd-fs@FreeBSD.ORG Sat Apr 11 08:15:39 2015 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 1F21E9D8 for ; Sat, 11 Apr 2015 08:15:39 +0000 (UTC) Received: from mail-pa0-x235.google.com (mail-pa0-x235.google.com [IPv6:2607:f8b0:400e:c03::235]) (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 DAC15FFD for ; Sat, 11 Apr 2015 08:15:38 +0000 (UTC) Received: by pacyx8 with SMTP id yx8so45356438pac.1 for ; Sat, 11 Apr 2015 01:15:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=kyS/OUIqZ1WVj6dKPoshQz3s8Tnqqc6nzhAkRVry6Rs=; b=MGXpEhGL/ww/jwDBZo1/MY1v155KR2+I2ui57HyO88f1HYEUxjae0uzM3r9WK3qq29 Hhc49BQInsH9Vk3iX7nVfz721ocs+12pQAesezNRKPAstLpc1s9DN5sRu6TxV+j5AssK ZHCgQBGfhJvUCC2Bk4KSKyWD7f+2Rl6iBmtcy8yhSb6lCHEZBobIsohhtTc3I/u0N1GV Rkl58cj+ziulfM/a9lW8MfFZ1LsBAh/UOXZiBeV2wBvPd0oUvUEWMmWHh38HIlqDVw62 k7w6xDWrKuvdvM744Oh/dBtn97naZTxPqWj8JLEQUoFS0oUPle3Yj7bGVll4vlxzZp3Q bukw== MIME-Version: 1.0 X-Received: by 10.68.167.131 with SMTP id zo3mr9179998pbb.123.1428740138441; Sat, 11 Apr 2015 01:15:38 -0700 (PDT) Received: by 10.70.104.4 with HTTP; Sat, 11 Apr 2015 01:15:38 -0700 (PDT) Received: by 10.70.104.4 with HTTP; Sat, 11 Apr 2015 01:15:38 -0700 (PDT) In-Reply-To: <552857B8.6040001@multiplay.co.uk> References: <552857B8.6040001@multiplay.co.uk> Date: Sat, 11 Apr 2015 11:15:38 +0300 Message-ID: Subject: Re: Migrating ZFS from 8.3 to 10.1 From: Sami Halabi To: Steven Hartland Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: freebsd-fs@freebsd.org 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: Sat, 11 Apr 2015 08:15:39 -0000 hi, Its worth mentioning that in 10 ZFS allocates few% (?) of disk space as reserved for fs uses that wasn't in 8/9, so if you have small ammount of free space you might end up in an full system with no free space. Sami =D7=91=D7=AA=D7=90=D7=A8=D7=99=D7=9A 11 =D7=91=D7=90=D7=A4=D7=A8=D7=B3 2015= 02:07,=E2=80=8F "Steven Hartland" =D7=9B=D7=AA=D7=91: > 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 poo= ls > 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 los= t >> 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" >> > > _______________________________________________ > 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" >