Re: [Xen-devel] Ubuntu 11.04 (amd64 and i386) under Xen as PV on HVM guests don't load the PV drivers.

[Stefan Bader <stefan.bader@xxxxxxxxxxxxx>]

On 27.03.2012 17:11, Stefan Bader wrote:
> On 27.03.2012 16:41, Konrad Rzeszutek Wilk wrote:
>> On Mon, Mar 26, 2012 at 04:59:05PM -0400, Konrad Rzeszutek Wilk wrote:
>>> So  I tried to load the Ubuntu 11.04 - both x86 and amd64 with this
>>
>> Grrrr.. Ignore this email please. I hadn't realized that 12.xx is the new
>> one - and playing with that right now.
>>
> Yeah, unfortunately we sorted out the "better have blkfront and netfront
> built-in" too late. After the release went out and the cd/dvd images are
> not re-done for non-LTS. :(
> So installation has to be done with preventing the unplugging. Also at that
> point there still was one of the irq emulation bugs in, so NIC model should be
> e1000...
Errm, that actually was 11.10. But the unplugging was the same in 11.04 too...

> 
> -Stefan
> 

>>> little guest config:
>>>
>>> kernel = "/usr/lib/xen/boot/hvmloader"
>>> builder='hvm'
>>> memory=1024
>>> maxvcpus = 2
>>> serial='pty'
>>> vcpus = 2
>>> disk = [ 
>>> 'file:/home/konrad/Downloads/ubuntu-11.10-desktop-amd64.iso,hdc:cdrom,r','phy:/dev/vg_guest/ubuntu1110,hda,w']
>>> boot="dn"
>>> vif = [ 'type=ioemu,model=e1000,mac=00:0f:4b:00:00:66, bridge=switch' ]
>>> vnc=1
>>> vnclisten="0.0.0.0"
>>> usb=1
>>> xen_platform_pci=1
>>> usbdevice='tablet'
>>>
>>> And found out that the i386 does not have PAE built in, so the whole Xen
>>> subsystem is turned off (oops) - that actually looks like a bug b/c I think
>>> the PV drivers in HVM mode ought to work in non-PAE mode.. It means that
>>> the guest is running completly as HVM.
>>>
>>> But then I thought - surely the x86_64 should work. So botted it up, saw
>>> xen-platform-pci do the unplugging off the QEMU drivers, and .. then no
>>> network nor any disk - it looks like both xen-netfront and xen-blkfront
>>> don't get loaded? Looking in /lib/modules/*/ shows that they exist - so they
>>> are compiled in.
>>>
>>> Is that a known bug or should I open a BZ for that? Thanks.
>>>
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@xxxxxxxxxxxxx
>>> http://lists.xen.org/xen-devel
> 
> 
> 
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