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Date:      Sat, 27 Mar 2010 16:15:07 -0700
From:      Ali Mashtizadeh <mashtizadeh@gmail.com>
To:        Aristedes Maniatis <ari@ish.com.au>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: boot code compatibility with ZFS
Message-ID:  <440b3e931003271615w1ad38306i55d01b059a306af0@mail.gmail.com>
In-Reply-To: <4BAE869C.6070601@ish.com.au>
References:  <4BAE869C.6070601@ish.com.au>

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HEAD and 8-STABLE have support for booting off of raidz volumes.
8-STABLE this was merged in 204251.

On Sat, Mar 27, 2010 at 3:28 PM, Aristedes Maniatis <ari@ish.com.au> wrote:
> FreeBSD has recently been able to boot directly from ZFS as deailed here:
>
> =C2=A0http://wiki.freebsd.org/RootOnZFS
>
> Naturally having functional boot code has been key to this, but it is ver=
y
> confusing as to why sometimes I can get FreeBSD to boot nicely and someti=
mes
> not. From comments in threads and my experience, I've got the following
> rough timeline:
>
> FreeBSD 7.1: ZFS version 6, no ZFS boot capability
> FreeBSD 7.2: ZFS version 6, zfsboot only, boot from single vdev pool only
> FreeBSD 7.3: ZFS version 13, zfsboot broken, no ZFS boot capability
>
> FreeBSD 8.0: ZFS version 13, gptzfsboot and zfsboot, boot from mirrored p=
ool
> or single vdev, RAIDZ not supported, degraded pool not supported
>
>
> My questions:
>
> 1. Is the above list correct?
>
> 2. What is the situation for the two stable branches?
>
> 3. In an effort to get a machine booting properly I tried installing the
> boot code from 8-STABLE with a 8.0 kernel. That didn't work. What is the
> situation with backward and forward compatibility of the boot code? Will
> there come a time when an OS update will require an update of the boot co=
de?
>
>
> If someone were able to put these answers on the wiki page as well, I
> believe this would help others.
>
>
> Thanks
> Ari Maniatis
>
> --
> -------------------------->
> Aristedes Maniatis
> ish
> http://www.ish.com.au
> Level 1, 30 Wilson Street Newtown 2042 Australia
> phone +61 2 9550 5001 =C2=A0 fax +61 2 9550 4001
> GPG fingerprint CBFB 84B4 738D 4E87 5E5C =C2=A05EFA EF6A 7D2E 3E49 102A
>
> --
> -------------------------->
> Aristedes Maniatis
> ish
> http://www.ish.com.au
> Level 1, 30 Wilson Street Newtown 2042 Australia
> phone +61 2 9550 5001 =C2=A0 fax +61 2 9550 4001
> GPG fingerprint CBFB 84B4 738D 4E87 5E5C =C2=A05EFA EF6A 7D2E 3E49 102A
> _______________________________________________
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>



--=20
Ali Mashtizadeh
=D8=B9=D9=84=DB=8C =D9=85=D8=B4=D8=AA=DB=8C =D8=B2=D8=A7=D8=AF=D9=87



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