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Date: Mon, 09 Aug 2010 00:58:56 +0200
From: Philipp Wuensche <cryx-freebsd@h3q.com>
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To: Andriy Gapon <avg@icyb.net.ua>
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Cc: freebsd-fs@freebsd.org
Subject: Re: zfs loader: allow access to any filesystem in a pool
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Andriy Gapon wrote:
> This is a ZFS boot patch that I would like to present you for review and testing:
> http://people.freebsd.org/~avg/zfsboot.diff
> 
> Currently in zfsloader you can only switch between pools, but you can only
> access one predetermined filesystem within a pool - wither root dataset of a
> pool or a filesystem pointed to by bootfs pool property.
> With this patch it is possible to access any filesystem in a pool and, thus, to
> boot kernel and modules from an alternative filesystem.  This is another
> stepping stone in so called Boot Environments support.

This is great, exactly what I need for my Boot Environment stuff:
http://anonsvn.h3q.com/projects/freebsd-patches/wiki/manageBE

greetings,
philipp