Synnefo » snf-ganeti » ganeti-local

    self._UpgradeStorageTypes()

  def _UpgradeStorageTypes(self):

    """Upgrade the cluster's enabled storage types by inspecting the currently

       enabled and/or used storage types.

    """

    # enabled_storage_types in the cluster config were introduced in 2.8. Remove

    # this code once upgrading from earlier versions is deprecated.

    if not self.cluster.enabled_storage_types:

      storage_type_set = \

        set([constants.DISK_TEMPLATES_STORAGE_TYPE[inst.disk_template]

               for inst in self.instances.values()])

      # Add lvm, file and shared file storage, if they are enabled, even though

      # they might currently not be used.

      if self.cluster.volume_group_name:

        storage_type_set.add(constants.ST_LVM_VG)

      # FIXME: Adapt this when dis/enabling at configure time is removed.

      if constants.ENABLE_FILE_STORAGE:

        storage_type_set.add(constants.ST_FILE)

      if constants.ENABLE_SHARED_FILE_STORAGE:

        storage_type_set.add(constants.ST_SHARED_FILE)

      # Set enabled_storage_types to the inferred storage types. Order them

      # according to a preference list that is based on Ganeti's history of

      # supported storage types.

      self.cluster.enabled_storage_types = []

      for preferred_type in constants.STORAGE_TYPES_PREFERENCE:

        if preferred_type in storage_type_set:

          self.cluster.enabled_storage_types.append(preferred_type)

          storage_type_set.remove(preferred_type)

      self.cluster.enabled_storage_types.extend(list(storage_type_set))