Synnefo » snf-ganeti

def _GetLvmVgSpaceInfo(name, params):

  """Wrapper around C{_GetVgInfo} which checks the storage parameters.

  @type name: string

  @param name: name of the volume group

  @type params: list

  @param params: list of storage parameters, which in this case should be

    containing only one for exclusive storage

  """

  if params is None:

    raise errors.ProgrammerError("No storage parameter for LVM vg storage"

                                 " reporting is provided.")

  if not isinstance(params, list):

    raise errors.ProgrammerError("The storage parameters are not of type"

                                 " list: '%s'" % params)

  if not len(params) == 1:

    raise errors.ProgrammerError("Received more than one storage parameter:"

                                 " '%s'" % params)

  excl_stor = bool(params[0])

  return _GetVgInfo(name, excl_stor)

  constants.ST_LVM_VG: _GetLvmVgSpaceInfo,