Synnefo » snf-ganeti

    if instance.disk_template != constants.DT_DISKLESS:

      all_lvs = instance.MapLVsByNode()

      logger.Info("Instance '%s' DISK_LAYOUT: %s" % (instance.name, all_lvs))

  def Update(self, target):

    """Notify function to be called after updates.

    This function must be called when an object (as returned by

    GetInstanceInfo, GetNodeInfo, GetCluster) has been updated and the

    caller wants the modifications saved to the backing store. Note

    that all modified objects will be saved, but the target argument

    is the one the caller wants to ensure that it's saved.

    """

    if self._config_data is None:

      raise errors.ProgrammerError, ("Configuration file not read,"

                                     " cannot save.")

    if isinstance(target, objects.Cluster):

      test = target == self._config_data.cluster

    elif isinstance(target, objects.Node):

      test = target in self._config_data.nodes.values()

    elif isinstance(target, objects.Instance):

      test = target in self._config_data.instances.values()

    else:

      raise errors.ProgrammerError, ("Invalid object type (%s) passed to"

                                     " ConfigWriter.Update" % type(target))

    if not test:

      raise errors.ConfigurationError, ("Configuration updated since object"

                                        " has been read or unknown object")

    self._WriteConfig()