Re: [Xen-devel] booting from HVM (?pv?)

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Jun 24, 2013 at 10:21:48PM +0200, AL13N wrote:
> Hi,
> 
> I'm the Mageia XEN packager and during QA, we stumbled into a problem.
> 
> in fact, we wanted to test Mageia 3 installation on a HVM.
> 
> so, we had a sparse image and a iso file:
> 
> [ 'file:/opt/testhvm.img,sda,w', 'file:/opt/mageialive.iso,hdb:cdrom,r' ]
> 
> the live booted, and was able to install to disk, but it never seemed to boot 
> after the install... (for some reason)
> 
> in the end, this "worked" when we changed to:
> 
> [ 'file:/opt/testhvm.img,xvda,w', 'file:/opt/testhvm.img,sda,w' ]
> 
> apparently 'xvda' to get grub to boot the kernel; and 'sda' so that it could 
> start...
> 
> 
> any idea as to why it can't be booted with sda? is there a specific driver 
> missing?
> 

See here for more info:
http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers

This config works for both HVM and PVHVM:
disk = [ 'phy:/dev/vg01/f16pvhvm-disk0,hda,w', 
'file:/root/iso/Fedora-16-x86_64-DVD.iso,hdc:cdrom,r' ]

You can enable or disable PV drivers with:
xen_platform_pci=0|1


-- Pasi


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