anchor.diff:                      end, [],
                       [directory,
                        {node, node(), isasl},
  -                     port_servers,
  +                     {node, node(), port_servers},
                        {node, node(), ns_log}]).
   
   upgrade_config_from_1_7_to_1_7_1() ->
  
positive.code:                               [{dbdir, "dbdir"},
                                 {bucket_engine, "new-be"},
                                 {engines, "new-engines"}]},
                               {set, port_servers,
                                [{moxi, "moxi something"},
                                 {memcached, "memcached something"}]},
                               {set, {node, node(), ns_log}, default_log}]),
  
negative.code:                   {{node, node(), memcached},
                     [{bucket_engine, "new-be"},
                      {engines, "new-engines"}]},
                    {{node, node(), port_servers},
                     [{moxi, "moxi something"},
                      {memcached, "memcached something"}]},
                    {{node, node(), ns_log}, default_log}],
  