??????????????????KVM????????????????????????????????????????Agent ????qemu-img resize??????
qemu-img: This image format does not support resize ????????????qemu-img??????????qcow2????????????????????????????????????????????????resize??????qemu-img?????????????? ????????cloudstack4.2.0??????centos6.3??qemu-img????????qemu-img-0.12.1.2-2.295.el6.x86_64
