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xen-devel
Re: [Xen-devel] [RFC] Bootloader configuration
On Tuesday 28 February 2006 14:40, John Levon wrote:
> On Tue, Feb 28, 2006 at 08:31:55PM +0000, Tim Deegan wrote:
>
> > A grub port (or similar) seems like the most useful thing.
>
> Right. AFAIK nobody is working on this right now.
GRUB already implements its own read-only filesystem drivers for a variety of
filesystems. It sounds like your "readfs" would be duplicating this work.
> > The less dom0 has to understand about domU's kernel/fs peculiarities,
> > and the less fs, config and loader code that needs to be rewritten
> > just for Xen, the better.
I suppose it would also be nice not to need dom0 access to modify a domU's
kernel.
GRUB2 is conveniently very modular. You implement a block driver (Open
Firmware and BIOS drivers are already implemented), and then the filesystem
drivers "just work." You would want to write a small "blkfront" driver and
see exactly how little code you can get away with.
I am a GRUB2 developer and would be happy to help if you have questions.
--
Hollis Blanchard
IBM Linux Technology Center
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