#!/bin/bash
if (( $# == 1 ));then
  cd /var/lib/libvirt/images
  qemu-img create -f qcow2 -b cirros.qcow2 ${1}.img 30G
  sed "s,node_base,${1}," node_base.xml >/etc/libvirt/qemu/${1}.xml
  virsh define /etc/libvirt/qemu/${1}.xml
else
  echo $0 vmname
fi