Re: [Xen-devel] Question on RHEL 6 support

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Oct 21, 2011 at 02:41:36PM +0530, Alok Sinha wrote:
> Thanks Pasi. I am trying that.
> 
> By the way, I am getting following error while creating a HVM with rhel as 
> guest:
> 
> 
> "ERROR: no interface found for primary=eth0"
> 

Where do you get that error? on dom0? in domU ? When does that happen?

-- Pasi


> 
> 
> 
> On Oct 21, 2011, at 11:41 AM, Pasi Kärkkäinen wrote:
> 
> > On Fri, Oct 21, 2011 at 10:29:46AM +0530, Alok Sinha wrote:
> >> Pasi,
> >> 
> >>   Thanks for your response.
> >>   So how do I disable xen platform device for VM? Any pointers?
> >> 
> > 
> > You should be able to change it from /etc/xen/<name_of_the_vm> configfile.
> > 
> > Try:
> > xen_platform_pci=0
> > 
> > -- Pasi
> > 
> >> 
> >> On Oct 20, 2011, at 7:30 PM, Pasi Kärkkäinen wrote:
> >> 
> >>> On Thu, Oct 20, 2011 at 04:18:07PM +0530, Alok Sinha wrote:
> >>>>  Hi,
> >>> 
> >>> Hello,
> >>> 
> >>>>     I am trying to run RHEL 6 as guest over XEN (RHEL 5.6 as host)
> >>>>  hypervisor.
> >>>>     It seems that RHEL 6 loads the paravirt drivers by default and thus 
> >>>> HVM
> >>>>  mode is not working.
> >>>>     Any idea on this?
> >>> 
> >>> What do you mean with "HVM mode is not working" ?
> >>> 
> >>> PVHVM drivers (for HVM guests) are there to make disk/net performance a 
> >>> LOT better!
> >>> The default qemu-dm emulated ide controller and realtek nic are not very 
> >>> efficient..
> >>> 
> >>>>     I saw somewhere that including xen_emul_unplug=never will help. Is
> >>>>  there any other way it can be avoided?
> >>>> 
> >>> 
> >>> You can also disable the xen platform pci device for that VM from dom0, 
> >>> then the VM will not activate PVHVM drivers.
> >>> 
> >>> -- Pasi
> >>> 
> >> 
> 

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