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

To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] using domain0 file as root disk for domU
From: "Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>
Date: Mon, 18 Jul 2005 13:28:58 -0700
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Thread-index: AcWKE7qikKH7hGYcTemCQx4yvgdm+gBCzOrwAC2L+3A=
Thread-topic: [Xen-devel] using domain0 file as root disk for domU
> > >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! :)
> 
> Hmmm... when I try this, I get:
> 
> Error: Error creating domain: cannot concatenate 'str' and 
> 'NoneType' objects 

In case anyone else runs into this, the problem was that
/sbin was not in my PATH and losetup is used in a script
without a path.

Dan

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