def _WriteKVMRuntime(self, instance_name, data):
    """Write an instance's KVM runtime

    """
    try:
      utils.WriteFile(self._InstanceKVMRuntime(instance_name),
                      data=data)
    except EnvironmentError, err:
      raise errors.HypervisorError(err % "Failed to save KVM runtime file: %s")
dataset/ETHPy150Open ganeti/ganeti/lib/hypervisor/hv_kvm/__init__.py/KVMHypervisor._WriteKVMRuntime/swapped operands of `%`