Re: [Xen-users] Best way to convert pv to hvm?

[Tim Post <tim.post@xxxxxxxxxxx>]

On Tue, 2007-06-05 at 01:08 +0100, Tony Hoyle wrote:
> Hi,
> 
> I'm trying to convert a number of PV domains to HVM domains.  The snag 
> is they're all in separate partitions, so I need to get a unified disk 
> image.
> 
> My current plan is to mount the root of dom0 inside a booted domu 
> (single user mode) and dd the entire contents of the virtual disk 
> /dev/sda into a file on the dom0 disk.  Is this likely to work?  It's
> gonna be slow I know due to the dom0->domu->dom0 translation but is 
> there perhaps a faster way?  I presume xen itself creates a partition 
> table somewhere and if I could get at that and do it entire thing in 
> dom0... is this just a python script generating it at runtime or is it 
> stored somewhere?
> 
> Tony

Why not setup the hvm guests to use nfsroots with a brand spanking new
unpartitioned image as well? Just fdisk, format, copy over adjust
config / boot paramaters and reboot.

This also lets you work the neuances you'll need to address in udev and
others when converting. Well , may need to. I have no idea what you have
or I'd make more distro specific suggestions.

Just setup the nfs server on dom-0. I don't use HVM much, but I don't
see any reason why that wouldn't work.

Seems like the easiest way to go for me. Its quite easy to break up var/
usr/ and the rest doing it like that.

Hope this helps,
--Tim


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