@classmethod
    def destroy_vdi(cls, session, vdi_ref):
        try:
            task = session.call_xenapi('Async.VDI.destroy', vdi_ref)
            session.wait_for_task(task)
        except cls.XenAPI.Failure, exc:
            LOG.exception(exc)
            raise StorageError(vdi_ref % _('Unable to destroy VDI %s'))
dataset/ETHPy150Open nii-cloud/dodai-compute/nova/virt/xenapi/vm_utils.py/VMHelper.destroy_vdi/swapped operands of `%`