Date: Wed, 26 Feb 2014 22:02:59 -0800 From: Ross Penner <rossp@f-m.fm> To: Darren Pilgrim <list_freebsd@bluerosetech.com>, freebsd-questions@freebsd.org Subject: Re: Fresh installation on top of a old system in ZFS Message-ID: <1393480979.30572.88371385.2463FFA1@webmail.messagingengine.com> In-Reply-To: <53092660.1050004@bluerosetech.com> References: <1393099869.20690.86558389.02245411@webmail.messagingengine.com> <53092660.1050004@bluerosetech.com>
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On Sat, 22 Feb 2014, at 02:36 PM, Darren Pilgrim wrote: > On 2/22/2014 12:11 PM, Ross Penner wrote: > > I'm hoping to get some guidance on the best way to create a fresh > > FreeBSD install using my existing drives partitioned with ZFS. > > > > The old set up is with two drives of different sizes. The smaller one is > > mirrored with a partition of equal size on the larger drive to create > > one pool which is the root and boot partition. A second pool is made of > > the remaining space on the larger drive mounted at /tank/ > > > > I booted the USB image of FreeBSD 10 and I couldn't see an obvious way > > to use my old partitions as the base for the new system. Any advice that > > could be offered would be really appreciated! > > What does your ZFS dataset structure look like? If your root is not the > base dataset, you can install the new OS in parallel, change the bootfs > and mountpoints and boot into the new OS leaving the old one untouched. > For example, on a system that's been upgraded from 9.x to 10.x: > > # zfs list -o name,mountpoint > NAME MOUNTPOINT > tank none > tank/home /home > tank/logs /var/log > tank/mail /var/mail > tank/osroot9 none > tank/osroot9/tmp none > tank/osroot9/usr none > tank/osroot9/usr/local none > tank/osroot9/usr/obj none > tank/osroot9/usr/src none > tank/osroot9/var none > tank/osroot9/var/empty none > tank/osroot9/var/tmp none > tank/osroot10 / > tank/osroot10/tmp /tmp > tank/osroot10/usr /usr > tank/osroot10/usr/local /usr/local > tank/osroot10/usr/obj /usr/obj > tank/osroot10/usr/src /usr/src > tank/osroot10/var /var > tank/osroot10/var/empty /var/empty > tank/osroot10/var/tmp /var/tmp > tank/ports /usr/ports > tank/db/postgresql /usr/local/pgsql > tank/samba /samba > tank/www /usr/local/www > I think I need to add some clarity about my setup. I had a mini-itx all in one system that died on me. I bought a replacement system and attached the same harddrives. The system boots and the ZFS filesystems are available. I have two zpools. zroot which is mounted root and tank which was mounted at /tank. I'm trying to follow this (http://freebsdwiki.net/index.php/ZFS,_booting_from) guide, but my importing my zpools instead of creating them. The pools function fine when I boot off the harddrives, but I can't seem to import them from the shell. 'zpool import -f -o altroot=/mnt zroot' returns errors saying that none of the file systems are loaded. The same happens for tank. Can anybody offer any insight? Thanks
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