Synnefo » snf-ganeti » ganeti-local

           "GetOnlineNodes",

def GetOnlineNodes(nodes, cl=None, nowarn=False):

  """Returns the names of online nodes.

  This function will also log a warning on stderr with the names of

  the online nodes.

  @param nodes: if not empty, use only this subset of nodes (minus the

      offline ones)

  @param cl: if not None, luxi client to use

  @type nowarn: boolean

  @param nowarn: by default, this function will output a note with the

      offline nodes that are skipped; if this parameter is True the

      note is not displayed

  """

  if cl is None:

    cl = GetClient()

  op = opcodes.OpQueryNodes(output_fields=["name", "offline"],

                            names=nodes)

  result = SubmitOpCode(op, cl=cl)

  offline = [row[0] for row in result if row[1]]

  if offline and not nowarn:

    ToStderr("Note: skipping offline node(s): %s" % ", ".join(offline))

  return [row[0] for row in result if not row[1]]