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Date:      Tue, 15 Dec 2015 08:41:55 +0000
From:      Matthew Seaman <matthew@FreeBSD.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: freebsd-update, ZFS, and ver 8.2
Message-ID:  <566FD253.5090906@FreeBSD.org>
In-Reply-To: <CALfReyfzGq7in_FnGCJXW5aPmyCqjm4z+DJ_i3ZPEkDCJZWiLg@mail.gmail.com>
References:  <20151214194012.M53329@brightstar.bomgardner.net> <CALfReyfzGq7in_FnGCJXW5aPmyCqjm4z+DJ_i3ZPEkDCJZWiLg@mail.gmail.com>

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On 15/12/2015 08:10, krad wrote:
> I would use boot environments if you are zfs root so you can fail back
> easily. I would also use a src build as that will definitely work.
>=20
> eg
>=20
> beadmn create -e old_root new_root
> beadmn mount new_root /mnt
> export DESTDIR=3D/mnt
> cd /usr/src
> make -j 12 buildworld &&
>   make -j 12 buildkernel &&
>   make installworld &&
>   make installkernel &&
>   mergemaster &&
>   beadmn umount new_root &&
>   beadmn activate new_root
>=20
> later on init 6

There's more to do to fully update ZFS after this.  ZFS has a number of
new features that are available in 10.x which you can use 'zpool
upgrade' to enable.

When you do that, it will tell you to update the boot blocks using
'gpart bootcode ....'  It is vitally important you do that, or you can
render your system unbootable.

	Cheers,

	Matthew




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