Upgrading FreeBSd when using a zfs-only installation?

[Scott Ballantyne]

On Sun, Mar 13, 2011 at 1:37 PM, Randal L. Schwartz
<merlyn at stonehenge.com>wrote:

> >>>>> "Adam" == Adam Vande More <amvandemore at gmail.com> writes:
>
> Adam> On Sun, Mar 13, 2011 at 11:57 AM, Randal L. Schwartz
> Adam> <merlyn at stonehenge.com>wrote:
>
> >> http://forums.freebsd.org/showpost.php?p=94557&postcount=19
>
> Adam> Well those are his modified upgrade instructions, they seem
> Adam> relatively sound but the extra steps aren't required.  The gpart
> Adam> stuff is to update the boot loader which is only necessary if you
> Adam> upgrade the file system or pool eg zfs/zpool upgrade.  You should
> Adam> probably run this just to prevent potential severe pain later.
>
> No, this was *absolutely* necessary for the 8.1 upgrade, because the
> binary-installed boot loader was still ZFS ignorant.
>
> I'm just asking if it's *still* necessary for 8.2.  Does the 8.2 boot
> loader now know about ZFS if I install it from freebsd-update?
>
> Keep in mind, I'm booting straight from ZFS.  There are no UFS
> partitions on my disk.
>
> --
> Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777
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You need the new bootloader if you upgrade the zpool and zfs filesystems.
You'll get a message to that effect if you do that.