Synnefo » snf-ganeti » ganeti-local

def _GetWantedNodes(lu, nodes):

  """Returns list of checked and expanded node names.

  @type lu: L{LogicalUnit}

  @param lu: the logical unit on whose behalf we execute

  @type nodes: list

  @param nodes: list of node names or None for all nodes

  @rtype: list

  @return: the list of nodes, sorted

  @raise errors.ProgrammerError: if the nodes parameter is wrong type

  """

  if nodes:

    return [_ExpandNodeName(lu.cfg, name) for name in nodes]

  return utils.NiceSort(lu.cfg.GetNodeList())

def _GetWantedInstances(lu, instances):

  """Returns list of checked and expanded instance names.

  @type lu: L{LogicalUnit}

  @param lu: the logical unit on whose behalf we execute

  @type instances: list

  @param instances: list of instance names or None for all instances

  @rtype: list

  @return: the list of instances, sorted

  @raise errors.OpPrereqError: if the instances parameter is wrong type

  @raise errors.OpPrereqError: if any of the passed instances is not found

  """

  if instances:

    wanted = [_ExpandInstanceName(lu.cfg, name) for name in instances]

  else:

    wanted = utils.NiceSort(lu.cfg.GetInstanceList())

  return wanted