Synnefo » snf-ganeti

    the attach if can return success.

    """

      info = self._GetDevInfo(self._GetShowData(minor))

      match_l = self._MatchesLocal(info)

      match_r = self._MatchesNet(info)

    if not result:

      return result

    need_localdev_teardown = False

    if self._children and self._children[0] and self._children[1]:

      result = self._AssembleLocal(minor, self._children[0].dev_path,

      raise errors.ProgrammerError("Wrong template configuration")

    remote_node = secondary_nodes[0]

    (minor_pa, minor_pb,

    names = _GenerateUniqueNames(cfg, [".sda_data", ".sda_meta",

                                       ".sdb_data", ".sdb_meta"])

    feedback_fn("* creating instance disks...")

    if not _CreateDisks(self.cfg, iobj):

      _RemoveDisks(iobj, self.cfg)

      raise errors.OpExecError("Device creation failed, reverting...")

    feedback_fn("adding instance %s to cluster config" % instance)

    # Declare that we don't want to remove the instance lock anymore, as we've

    # added the instance to the config

    del self.remove_locks[locking.LEVEL_INSTANCE]

    if self.op.wait_for_sync:

      disk_abort = not _WaitForSync(self.cfg, iobj, self.proc)

    # Step 4: dbrd minors and drbd setups changes

    logging.debug("Allocated minors %s" % (minors,))

    self.proc.LogStep(4, steps_total, "changing drbd configuration")

    for dev, new_minor in zip(instance.disks, minors):

        new_logical_id = (new_node, pri_node,

                          dev.logical_id[2], new_minor, dev.logical_id[4])

      iv_names[dev.iv_name] = (dev, dev.children, new_logical_id)

      new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,

                              logical_id=new_logical_id,

                              children=dev.children)

      if not _CreateBlockDevOnSecondary(cfg, new_node, instance,

                                        new_drbd, False,

                                      _GetInstanceInfoText(instance)):

        raise errors.OpExecError("Failed to create new DRBD on"

                                 " node '%s'" % new_node)

    if not done:

      # no detaches succeeded (very unlikely)

      raise errors.OpExecError("Can't detach at least one DRBD from old node")

    # if we managed to detach at least one, we update all the disks of

      dev.logical_id = new_logical_id

      cfg.SetDiskID(dev, pri_node)

    cfg.Update(instance)

    # and now perform the drbd attach

    info("attaching primary drbds to new secondary (standalone => connected)")