Xen PV - How to enable quota on Ubuntu 12.04

Hello,

I have xen pv with fresh virtualmin installed on Ubuntu 12.04. Everytime I click to enable the Quota feature it always error.

It'a said "Quota format not supported in kernel." I have tried to install the virtual kernel but still error.

Does Ubuntu not support this quota feature? Thanks...

http://ift.tt/1dvHQ0Z