Synnefo » snf-ganeti

  @classmethod

  def _UnconfigureNic(cls, instance_name, nic, only_local=True):

    """Run ifdown script for a specific NIC

    This is executed during instance cleanup and NIC hot-unplug

    @param instance_name: instance we're acting on

    @type instance_name: string

    @param nic: nic we're acting on

    @type nic: nic object

    @param only_local: whether ifdown script should reset global conf (dns)

    @type only_local: boolean

    """

    tap = cls._GetInstanceNICTap(instance_name, nic)

    env = hv_base.CreateNICEnv(instance_name, nic, tap)

    arg2 = str(only_local).lower()

    result = utils.RunCmd([pathutils.KVM_IFDOWN, tap, arg2], env=env)

    if result.failed:

      raise errors.HypervisorError("Failed to unconfigure interface %s: %s;"

                                   " network configuration script output: %s" %

                                   (tap, result.fail_reason, result.output))

  @classmethod

  def _UnconfigureInstanceNICs(cls, instance_name, info=None):

    """Get runtime NICs of an instance and unconfigure them

    """

    _, kvm_nics, __, ___ = cls._LoadKVMRuntime(instance_name, info)

    for nic in kvm_nics:

      cls._UnconfigureNic(instance_name, nic)