anchor.diff:                              Acc
                       end, {0,0,0,0}, Ret4),
   
  -    catch snmp_generic:variable_set(?SNMP_MSG_TOTAL_SIZE,  erlang:round(TSize2)),
  -    catch snmp_generic:variable_set(?SNMP_MSG_ACTIVE_SIZE, erlang:round(ASize2)),
  -    catch snmp_generic:variable_set(?SNMP_MSG_TOTAL_OBJS,  TObjs2),
  -    catch snmp_generic:variable_set(?SNMP_MSG_ACTIVE_OBJS, AObjs2),
  +    TObjs3 = check_number(TObjs2),
  +    AObjs3 = check_number(AObjs2),
  +
  +    catch snmp_generic:variable_set(?SNMP_MSG_TOTAL_SIZE,  erlang:round(TSize2/1024/1024)),
  +    catch snmp_generic:variable_set(?SNMP_MSG_ACTIVE_SIZE, erlang:round(ASize2/1024/1024)),
  +    catch snmp_generic:variable_set(?SNMP_MSG_TOTAL_OBJS,  TObjs3),
  +    catch snmp_generic:variable_set(?SNMP_MSG_ACTIVE_OBJS, AObjs3),
       ok.
  +
  +%% @private
  +check_number(Value) ->
  +    case (leo_math:power(2,32) =< Value) of
  +        true  -> 4294967296;
  +        false -> Value
  +    end.
  
positive.code: %% Callbacks
  %%--------------------------------------------------------------------
  handle_notify() ->
      ?debugVal('handle_notify'),
      {ok, {Res1, _}} = leo_mq_api:status(?QUEUE_ID_PER_OBJECT),
      {ok, {Res2, _}} = leo_mq_api:status(?QUEUE_ID_SYNC_BY_VNODE_ID),
      {ok, {Res3, _}} = leo_mq_api:status(?QUEUE_ID_REBALANCE),
  
      catch snmp_generic:variable_set(?SNMP_MSG_REPLICATE,  Res1),
      catch snmp_generic:variable_set(?SNMP_MSG_SYNC_VNODE, Res2),
      catch snmp_generic:variable_set(?SNMP_MSG_REBALANCE,  Res3),
  
      {ok, Ret4} = leo_object_storage_api:stats(),
      {TSize2, ASize2, TObjs2, AObjs2} =
          lists:foldl(fun({ok, #storage_stats{total_sizes  = TSize0,
  
negative.code: %% callback
  -export([handle_notify/0]).
  
  -define(SNMP_MSG_REPLICATE,   'num-of-msg-replicate').
  -define(SNMP_MSG_SYNC_VNODE,  'num-of-msg-sync-vnode').
  -define(SNMP_MSG_REBALANCE,   'num-of-msg-rebalance').
  -define(SNMP_MSG_ACTIVE_SIZE, 'storage-active-objects-sizes').
  -define(SNMP_MSG_ACTIVE_OBJS, 'storage-active-objects').
  -define(SNMP_MSG_TOTAL_SIZE,  'storage-total-objects-sizes').
  