Re: [Xen-devel]xl create PV guest with qcow/qcow2 disk images fail

["Fajar A. Nugraha" <list@xxxxxxxxx>]

On Wed, Oct 19, 2011 at 5:55 PM, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx> wrote:
>> This is a PV guest configured with pygrub, correct?
>> If so, qcow/qcow2 are not supported in this scenario.
>>
>> You could:
>>
>> - avoid using pygrub (specify the kernel manually) and keep using qcow/qcow2;
>> - switch to raw disks and keep using pygrub;
>> - install a Linux kernel that support blktap2 (like the XCP kernel, see
>>   http://wiki.xen.org/xenwiki/XenDom0Kernels) and switch to VHD format.
>>
>
> The way to make it work would be to call qemu-nbd and nbd-client from xl
> so that a /dev/nbd0 comes up in dom0 and pygrub can use it to extract
> the kernel and initrd from the qcow2 image.

would pv-grub work? If yes, it would give better performance compared
to nbd workaround.

-- 
Fajar

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