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diff --git a/lib/mnesia/test/ext_test.erl b/lib/mnesia/test/ext_test.erl
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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1996-2014. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(ext_test).
+
+%% Initializations
+-export([init_backend/0, add_aliases/1, remove_aliases/1,
+ check_definition/4, semantics/2]).
+
+-export([
+ create_table/3, load_table/4,
+ delete_table/2, close_table/2, sync_close_table/2,
+
+ sender_init/4,
+ receiver_first_message/4, receive_data/5, receive_done/4,
+
+ index_is_consistent/3, is_index_consistent/2,
+
+ real_suffixes/0, tmp_suffixes/0,
+
+ info/3,
+ fixtable/3,
+ validate_key/6, validate_record/6,
+
+ first/2, last/2, next/3, prev/3, slot/3,
+
+ insert/3, update_counter/4,
+ lookup/3,
+ delete/3, match_delete/3,
+ select/1, select/3, select/4, repair_continuation/2
+ ]).
+
+-ifdef(DEBUG).
+-define(DBG(DATA), io:format("~p:~p: ~p~n",[?MODULE, ?LINE, DATA])).
+-define(DBG(FORMAT, ARGS), io:format("~p:~p: " ++ FORMAT,[?MODULE, ?LINE] ++ ARGS)).
+-else.
+-define(DBG(DATA), ok).
+-define(DBG(FORMAT, ARGS), ok).
+-endif.
+
+%% types() ->
+%% [{fs_copies, ?MODULE},
+%% {raw_fs_copies, ?MODULE}].
+
+semantics(ext_ets, storage) -> ram_copies;
+semantics(ext_ets, types ) -> [set, ordered_set, bag];
+semantics(ext_ets, index_types) -> [ordered];
+semantics(_Alias, _) ->
+ undefined.
+
+%% valid_op(_, _) ->
+%% true.
+
+init_backend() ->
+ ?DBG(init_backend),
+ ok.
+
+add_aliases(_As) ->
+ ?DBG(_As),
+ ok.
+
+remove_aliases(_) ->
+ ok.
+
+
+%% Table operations
+
+check_definition(ext_ets, _Tab, _Nodes, _Props) ->
+ ?DBG("~p ~p ~p~n", [_Tab, _Nodes, _Props]),
+ ok.
+
+create_table(ext_ets, Tab, Props) when is_atom(Tab) ->
+ Tid = ets:new(Tab, [public, proplists:get_value(type, Props, set), {keypos, 2}]),
+ ?DBG("~p Create: ~p(~p) ~p~n", [self(), Tab, Tid, Props]),
+ mnesia_lib:set({?MODULE, Tab}, Tid),
+ ok;
+create_table(_, Tag={Tab, index, {_Where, Type0}}, _Opts) ->
+ Type = case Type0 of
+ ordered -> ordered_set;
+ _ -> Type0
+ end,
+ Tid = ets:new(Tab, [public, Type]),
+ ?DBG("~p(~p) ~p~n", [Tab, Tid, Tag]),
+ mnesia_lib:set({?MODULE, Tag}, Tid),
+ ok;
+create_table(_, Tag={_Tab, retainer, ChkPName}, _Opts) ->
+ Tid = ets:new(ChkPName, [set, public, {keypos, 2}]),
+ ?DBG("~p(~p) ~p~n", [_Tab, Tid, Tag]),
+ mnesia_lib:set({?MODULE, Tag}, Tid),
+ ok.
+
+delete_table(ext_ets, Tab) ->
+ try
+ ets:delete(mnesia_lib:val({?MODULE,Tab})),
+ mnesia_lib:unset({?MODULE,Tab}),
+ ok
+ catch _:_ ->
+ ?DBG({double_delete, Tab}),
+ ok
+ end.
+
+load_table(ext_ets, _Tab, init_index, _Cs) -> ok;
+load_table(ext_ets, _Tab, _LoadReason, _Cs) ->
+ ?DBG("Load ~p ~p~n", [_Tab, _LoadReason]),
+ ok.
+%% mnesia_monitor:unsafe_create_external(Tab, ext_ets, ?MODULE, Cs).
+
+sender_init(Alias, Tab, _RemoteStorage, _Pid) ->
+ KeysPerTransfer = 100,
+ {standard,
+ fun() -> mnesia_lib:db_init_chunk({ext,Alias,?MODULE}, Tab, KeysPerTransfer) end,
+ fun(Cont) -> mnesia_lib:db_chunk({ext,Alias,?MODULE}, Cont) end}.
+
+receiver_first_message(Sender, {first, Size}, _Alias, Tab) ->
+ ?DBG({first,Size}),
+ {Size, {Tab, Sender}}.
+
+receive_data(Data, ext_ets, Name, _Sender, {Name, Tab, _Sender}=State) ->
+ ?DBG({Data,State}),
+ true = ets:insert(Tab, Data),
+ {more, State};
+receive_data(Data, Alias, Tab, Sender, {Name, Sender}) ->
+ receive_data(Data, Alias, Tab, Sender, {Name, mnesia_lib:val({?MODULE,Tab}), Sender}).
+
+receive_done(_Alias, _Tab, _Sender, _State) ->
+ ?DBG({done,_State}),
+ ok.
+
+close_table(Alias, Tab) -> sync_close_table(Alias, Tab).
+
+sync_close_table(ext_ets, _Tab) ->
+ ?DBG(_Tab).
+
+fixtable(ext_ets, Tab, Bool) ->
+ ?DBG({Tab,Bool}),
+ ets:safe_fixtable(mnesia_lib:val({?MODULE,Tab}), Bool).
+
+info(ext_ets, Tab, Type) ->
+ ?DBG({Tab,Type}),
+ Tid = mnesia_lib:val({?MODULE,Tab}),
+ try ets:info(Tid, Type) of
+ Val -> Val
+ catch _:_ ->
+ undefined
+ end.
+
+real_suffixes() ->
+ [".dat"].
+
+tmp_suffixes() ->
+ [].
+
+%% Index
+
+index_is_consistent(_Alias, _Ix, _Bool) -> ok. % Ignore for now
+is_index_consistent(_Alias, _Ix) -> false. % Always rebuild
+
+%% Record operations
+
+validate_record(_Alias, _Tab, RecName, Arity, Type, _Obj) ->
+ {RecName, Arity, Type}.
+
+validate_key(_Alias, _Tab, RecName, Arity, Type, _Key) ->
+ {RecName, Arity, Type}.
+
+insert(ext_ets, Tab, Obj) ->
+ ?DBG({Tab,Obj}),
+ try
+ ets:insert(mnesia_lib:val({?MODULE,Tab}), Obj),
+ ok
+ catch _:Reason ->
+ io:format("CRASH ~p ~p~n",[Reason, mnesia_lib:val({?MODULE,Tab})])
+ end.
+
+lookup(ext_ets, Tab, Key) ->
+ ets:lookup(mnesia_lib:val({?MODULE,Tab}), Key).
+
+delete(ext_ets, Tab, Key) ->
+ ets:delete(mnesia_lib:val({?MODULE,Tab}), Key).
+
+match_delete(ext_ets, Tab, Pat) ->
+ ets:match_delete(mnesia_lib:val({?MODULE,Tab}), Pat).
+
+first(ext_ets, Tab) ->
+ ets:first(mnesia_lib:val({?MODULE,Tab})).
+
+last(Alias, Tab) -> first(Alias, Tab).
+
+next(ext_ets, Tab, Key) ->
+ ets:next(mnesia_lib:val({?MODULE,Tab}), Key).
+
+prev(Alias, Tab, Key) ->
+ next(Alias, Tab, Key).
+
+slot(ext_ets, Tab, Pos) ->
+ ets:slot(mnesia_lib:val({?MODULE,Tab}), Pos).
+
+update_counter(ext_ets, Tab, C, Val) ->
+ ets:update_counter(mnesia_lib:val({?MODULE,Tab}), C, Val).
+
+select('$end_of_table' = End) -> End;
+select({ext_ets, C}) -> ets:select(C).
+
+select(Alias, Tab, Ms) ->
+ Res = select(Alias, Tab, Ms, 100000),
+ select_1(Res).
+
+select_1('$end_of_table') -> [];
+select_1({Acc, C}) ->
+ case ets:select(C) of
+ '$end_of_table' -> Acc;
+ {New, Cont} ->
+ select_1({New ++ Acc, Cont})
+ end.
+
+select(ext_ets, Tab, Ms, Limit) when is_integer(Limit); Limit =:= infinity ->
+ ets:select(mnesia_lib:val({?MODULE,Tab}), Ms, Limit).
+
+repair_continuation({Alias, Cont}, Ms) ->
+ {Alias, ets:repair_continuation(Cont, Ms)}.
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