[Users] [oVirt 3.1] Export VM

Hello, I have a VM that has a 30 GB thin provisioned hard disk, but when I make an export from the GUI the process allocates 30 GB instead of the 6 GB that the disk is using now. This could be something that I have wrong or a bug ? I have installed oVirt 3.1 under CentOS 6.3 (dre repo). Also, is there any way to upgrade qemu to have the possibility of make live snapshots and exports ?! Thanks. Regards.- -- AGD