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Date: Sat, 15 Feb 2014 09:18:45 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Polytropon <freebsd@edvax.de>
Subject: Re: Installing without blowing away GRUB/MBR
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 (wonkity.com [127.0.0.1]); Sat, 15 Feb 2014 09:18:45 -0700 (MST)
Cc: Mason Loring Bliss <mason@blisses.org>, freebsd-questions@freebsd.org
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On Sat, 15 Feb 2014, Polytropon wrote:
> On Fri, 14 Feb 2014 21:52:11 -0500, Mason Loring Bliss wrote:
>
>> What I'm imagining is that I'll end up with a freebsd-boot partition with
>> stage1 and stage2 in it, and then a ZFS partition with everything else. (To
>> throw a curve, I want to set up mirroring, and I assume I want either
>> manually or automatically to end up with an equivalent freebsd-boot partition
>> on the second disk.)
>
> That should be easy to prepare with gpart and gmorror.
> Warren Block wrote an article about that topic which
> you'll find helpful:
>
> http://www.wonkity.com/~wblock/docs/html/gmirror.html

That article probably does not apply to this situation (or maybe any... 
I added a warning to it last week).  A ZFS mirror is probably a better 
solution than ZFS on top of a gmirror.

Looking back on this thread, I'm confused.  The subject says MBR, but 
then the text talks about GPT.  If possible, avoid MBR and the 
"partitions inside a partition" mess of EBR or MBR slice/FreeBSD 
partitions and just use GPT.  Grub2 is supposed to handle it.