Date: Thu, 23 May 2013 09:13:39 -0400 From: Paul Kraus <paul@kraus-haus.org> To: Albert Shih <Albert.Shih@obspm.fr> Cc: Liste FreeBSD <freebsd-questions@freebsd.org> Subject: Re: ZFS install on a partition Message-ID: <B95FA749-1979-4ACF-9107-CE3E6CFA476A@kraus-haus.org> In-Reply-To: <20130523085333.GC1426@pcjas.obspm.fr> References: <F744BBF1-D98C-47BF-9546-14D1A9CB3733@todoo.biz> <5FB78660-EDA4-40DB-8A0D-B0DE23A0FB6C@kraus-haus.org> <20130523085333.GC1426@pcjas.obspm.fr>
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On May 23, 2013, at 4:53 AM, Albert Shih <Albert.Shih@obspm.fr> wrote: > Have you ever try to update a ZFS Pool on 9.0 to 9.1 ?=20 I recently upgraded my home server from 9.0 to 9.1, actually, I did = exported my data zpool (raidZ2), did a clean installation of 9.1, then = imported my data zpool. Everything went perfectly. zpool upgrade did NOT = indicate that there was a newer version of zpool so I did not even have = to upgrade the on-disk zpool format (currently 28). > I've a server with a big zpool in 9.0 I'm wonder if it's good idea to > upgrade to 9.1. If I lost the data I'm close to dead person. If I = thinking > to upgrade to 9.1 it's because I got small issue about NFSD, LACP. My data zpool is not that big, only five 1TB drives in a raidZ2 for a = net capacity of about 3TB, plus one 1TB hot spare. My suggestion is to do the following (which is how I did the "upgrade"): 1) on a different physical system install 9.1, get the OS configured how = you want it 2) on the production server, export the data zpool 3) shutdown the production server 4) remove the OS drives from the production server and replace with the = drives you just installed 9.1 on 5) booth the production server with the 9.1 OS drives, make sure = everything is working the way you want 6) import the data zpool If the import fails, you can always put the 9.0 drives back in and get = back up and running fairly quickly. My system has the OS on a mirror zpool of two drives for just the OS. -- Paul Kraus Deputy Technical Director, LoneStarCon 3 Sound Coordinator, Schenectady Light Opera Company
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