anchor.diff:      {noreply,test};
   
   handle_cast(write_ringfile, State=#state{raw_ring=Ring}) ->
  -    do_write_ringfile(Ring),
  +    ok = do_write_ringfile(Ring),
       {noreply,State}.
   
   
  
positive.code:     FreshRing = riak_core_ring:fresh(),
      State2 = set_ring(FreshRing, State),
      %% Make sure the fresh ring gets written before stopping
      do_write_ringfile(FreshRing),
  
      %% Handoff is complete and fresh ring is written
      %% so we can safely stop now.
  
negative.code: 
  prune_write_ring(Ring, State) ->
      riak_core_ring:check_tainted(Ring, "Error: Persisting tainted ring"),
      ok = riak_core_ring_manager:prune_ringfiles(),
      _ = do_write_ringfile(Ring),
      State2 = set_ring(Ring, State),
      State2.
  
  