anchor.diff:      {ok, R2} = leo_redundant_manager_api:get_redundancies_by_key(get, Key),
       case (R1#redundancies.nodes == R2#redundancies.nodes) of
           true ->
  -            void;
  +            ok;
           false ->
  +            %% ?debugVal({Key, R1#redundancies.vnode_id_to,
  +            %%            R1#redundancies.nodes, R2#redundancies.nodes})
               ?assertEqual(1, (length(R2#redundancies.nodes) -
  -                                 length(R1#redundancies.nodes))),
  -            ?debugVal({Key, R1#redundancies.vnode_id_to,
  -                       R1#redundancies.nodes, R2#redundancies.nodes})
  +                                 length(R1#redundancies.nodes)))
       end,
       attach_1_1(Index - 1).
   
  
positive.code:     end,
      redundant_1(Members, St+1, End).
  
  -endif.
  
negative.code: 
      %% execute
      {ok, Res} = leo_redundant_manager_api:rebalance(),
      ?assertEqual(true, Res =/= []),
      lists:foreach(fun(Item) ->
                            Src  = proplists:get_value('src',  Item),
                            Dest = proplists:get_value('dest', Item),
  