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

[Stefan Bader <stefan.bader@canonical.com>]

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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...

-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@lists.xen.org
>> http://lists.xen.org/xen-devel



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