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From: Eric Shelton <knockknock@gmail.com>
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Date: Tue, 2 Apr 2013 09:19:20 -0400
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Subject: Re: configuration for FreeBSD as domU "storage domain"?
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Of course, it is blkback, not blkfront, that I would want to use to
serve up block devices...

On Apr 1, 2013, at 5:24 PM, Eric Shelton <eshelton@pobox.com> wrote:

> Dear List,
>
> Although I understand it is possible, I have not found any clear
> examples of xl configs and how to configure FreeBSD to serve up a
> block device from a FreeBSD domU via blkfront.
>
> For example, given the following set of domains:
> 1: Linux dom0
> 2: FreeBSD HVM domU (serving up a zvol via blkfront, PCI passthrough
> of underlying storage devices)
> 3: Windows 7 HVM domU (using the zvol as its root fs)
>
> What needs to be done within FreeBSD to expose the zvol via blkfront?
>
> What does the "disks" portion of the xl config file look like for
> starting up the FreeBSD domain?  (What is the format like when a domU
> is serving up a block device?)
>
> What does the "disks" portion of the xl config file look like for
> starting up the Windows 7 domain?  (What is the format like when you
> wish to attach to block device served up by a domU, not dom0?).
>
> Thank you for your help,
> Eric