Synnefo » snf-ganeti » ganeti-local

  def MigrateInstance(self, instance, target, live):

    """Migrate an instance to a target node.

    Arguments:

      - instance: the name of the instance

      - target: the ip of the target node

      - live: whether to do live migration or not

    Returns: none, errors will be signaled by exception.

    The migration will not be attempted if the instance is not

    currently running.

    """

    if self.GetInstanceInfo(instance) is None:

      raise errors.HypervisorError("Instance not running, cannot migrate")

    args = ["xm", "migrate"]

    if live:

      args.append("-l")

    args.extend([instance, target])

    result = utils.RunCmd(args)

    if result.failed:

      raise errors.HypervisorError("Failed to migrate instance %s: %s" %

                                   (instance, result.output))