'Converts a raw disk to qcow2.'

@staticmethod
def _disk_raw_to_qcow2(path):

    path_qcow = (path + '_qcow')
    utils.execute('qemu-img', 'convert', '-f', 'raw', '-O', 'qcow2', path, path_qcow)
    utils.execute('mv', path_qcow, path)
