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Re: [Xen-devel] using domain0 file as root disk for domU

Magenheimer, Dan (HP Labs Fort Collins) wrote:

I know I've seen this before but can't find it...

Can someone provide a pointer to (or if simple,
just a quick reply) how to use a domain0 file as
a root disk for a domU?

I am able to mount the file as a loopback device:

mount -o loop,offset=512 -t ext2 /var/xen/sda /mnt

But how do I specify it in xmdefconfig?  I tried:

disk = [ 'phy:/mnt,hda1,w' ]

disk = [ '/mnt,hda1,w' ]
disk = [ 'file:/var/xen/sda,hda1,w' ]

Make sure you unmount it in dom0 first! :)

Paul Larson

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