Date: Fri, 29 Feb 2008 15:40:03 -0600 From: Barry Pederson <bp@barryp.org> To: Forrest Aldrich <forrie@forrie.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS as / filesystem on 7.0 ? Message-ID: <47C87BB3.3010301@barryp.org> In-Reply-To: <47C8656A.6080808@forrie.com> References: <47C8656A.6080808@forrie.com>
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Forrest Aldrich wrote:
> I recently updated my existing 6.x systems to 7.0. Excited to see ZFS
> support, after looking through the current documentation, it doesn't
> appear we can use ZFS as the / filesystem, or am I mistaken (or is that
> even advisable). The sysinstall doesn't seem to provide you with the
> option for ZFS on the newly created partitions. So I could have / as
> UFS2 and /usr (et al) as ZFS.
>
> Could someone clarify? Perhaps I missed something in the documentation.
>
>
> Thanks.
You need to have /boot on a UFS partition, and then in /boot/loader.conf
you can have something like
zfs_load="YES"
vfs.root.mountfrom="zfs:tank/root"
so that the root filesystem is in ZFS. I doubt sysinstall supports any
of that, you'll have to do it manually. There's a wiki page describing
some of this.
http://wiki.freebsd.org/ZFSOnRoot
I've had good luck putting /boot on a CompactFlash device, and
dedicating the entire regular harddisk(s) to ZFS (no slices or
partitions).
glabeling the disks before putting them into a ZFS pool seems to be a
good idea too - that way they have a fixed name you can refer to that
doesn't change if they get moved to different physical ports.
Barry
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