From owner-freebsd-fs@FreeBSD.ORG  Fri Apr  6 09:28:35 2007
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From: Robert Watson <rwatson@FreeBSD.org>
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To: Alex Dupre <ale@FreeBSD.org>
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Cc: freebsd-fs@FreeBSD.org, freebsd-current@FreeBSD.org,
	Pawel Jakub Dawidek <pjd@FreeBSD.org>
Subject: Re: ZFS committed to the FreeBSD base.
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On Fri, 6 Apr 2007, Alex Dupre wrote:

> Pawel Jakub Dawidek wrote:
>> I'm happy to inform that the ZFS file system is now part of the FreeBSD
>> operating system.
>
> Congratulations! You're great!
>
>>   - There is no support for booting off of ZFS file system.
>
> Even booting kernel from a removable ufs media and then mounting a zfs root 
> via vfs.root.mountfrom?

I believe the key issue here is that the boot loader doesn't yet support ZFS. 
In 6.x and 7.x, the mechanism for mounting the root file system is identical 
to all other file systems, so it should be possible to use any file system as 
the root file system as long as you get can get the kernel up and running. 
And, in the case of ZFS, the ZFS module loaded (since it currently must be a 
module).

This is really exciting work and I'm very glad to see this in the tree!

Robert N M Watson
Computer Laboratory
University of Cambridge