diff options
Diffstat (limited to 'lib/mnesia/src/mnesia_dumper.erl')
| -rw-r--r-- | lib/mnesia/src/mnesia_dumper.erl | 416 |
1 files changed, 311 insertions, 105 deletions
diff --git a/lib/mnesia/src/mnesia_dumper.erl b/lib/mnesia/src/mnesia_dumper.erl index 0e954d869d..845ad0ac39 100644 --- a/lib/mnesia/src/mnesia_dumper.erl +++ b/lib/mnesia/src/mnesia_dumper.erl @@ -38,6 +38,8 @@ needs_dump_ets/1, raw_dump_table/2, raw_named_dump_table/2, + dump_to_logfile/2, + load_from_logfile/3, start_regulator/0, opt_dump_log/1, update/3, @@ -271,15 +273,25 @@ do_insert_rec(Tid, Rec, InPlace, InitBy, LogV) -> end end, D = Rec#commit.disc_copies, + ExtOps = commit_ext(Rec), insert_ops(Tid, disc_copies, D, InPlace, InitBy, LogV), + [insert_ops(Tid, Ext, Ops, InPlace, InitBy, LogV) || + {Ext, Ops} <- ExtOps, + storage_semantics(Ext) == disc_copies], case InitBy of startup -> DO = Rec#commit.disc_only_copies, - insert_ops(Tid, disc_only_copies, DO, InPlace, InitBy, LogV); + insert_ops(Tid, disc_only_copies, DO, InPlace, InitBy, LogV), + [insert_ops(Tid, Ext, Ops, InPlace, InitBy, LogV) || + {Ext, Ops} <- ExtOps, storage_semantics(Ext) == disc_only_copies]; _ -> ignore end. +commit_ext(#commit{external_copies = C}) -> + lists:foldl(fun({Ext, Op}, D) -> + orddict:append(Ext, Op, D) + end, orddict:new(), C). update(_Tid, [], _DumperMode) -> dumped; @@ -330,14 +342,15 @@ insert_ops(Tid, Storage, [Op | Ops], InPlace, InitBy, Ver) when Ver < "4.3" -> %% Normal ops disc_insert(_Tid, Storage, Tab, Key, Val, Op, InPlace, InitBy) -> - case open_files(Tab, Storage, InPlace, InitBy) of + Semantics = storage_semantics(Storage), + case open_files(Tab, Semantics, Storage, InPlace, InitBy) of true -> - case Storage of + case Semantics of disc_copies when Tab /= schema -> mnesia_log:append({?MODULE,Tab}, {{Tab, Key}, Val, Op}), ok; _ -> - dets_insert(Op,Tab,Key,Val) + dets_insert(Op,Tab,Key,Val,Storage) end; false -> ignore @@ -349,34 +362,37 @@ disc_insert(_Tid, Storage, Tab, Key, Val, Op, InPlace, InitBy) -> %% Otherwise we will get a double increment. %% This is perfect but update_counter is a dirty op. -dets_insert(Op,Tab,Key,Val) -> +dets_insert(Op,Tab,Key,Val, Storage0) -> + Storage = if Tab == schema -> disc_only_copies; + true -> Storage0 + end, case Op of write -> dets_updated(Tab,Key), - ok = dets:insert(Tab, Val); + ok = mnesia_lib:db_put(Storage, Tab, Val); delete -> dets_updated(Tab,Key), - ok = dets:delete(Tab, Key); + ok = mnesia_lib:db_erase(Storage, Tab, Key); update_counter -> case dets_incr_counter(Tab,Key) of true -> {RecName, Incr} = Val, - try _ = dets:update_counter(Tab, Key, Incr) + try _ = mnesia_lib:db_update_counter(Storage, Tab, Key, Incr) catch error:_ when Incr < 0 -> Zero = {RecName, Key, 0}, - ok = dets:insert(Tab, Zero); + ok = mnesia_lib:db_put(Storage, Tab, Zero); error:_ -> Init = {RecName, Key, Incr}, - ok = dets:insert(Tab, Init) + ok = mnesia_lib:db_put(Storage, Tab, Init) end; false -> ok end; delete_object -> dets_updated(Tab,Key), - ok = dets:delete_object(Tab, Val); + mnesia_lib:db_match_erase(Storage, Tab, Val); clear_table -> dets_cleared(Tab), - ok = dets:delete_all_objects(Tab) + ok = mnesia_lib:db_match_erase(Storage, Tab, '_') end. dets_updated(Tab,Key) -> @@ -431,23 +447,29 @@ insert(_Tid, _Storage, _Tab, _Key, [], _Op, _InPlace, _InitBy) -> ok; insert(Tid, Storage, Tab, Key, Val, Op, InPlace, InitBy) -> + Semantics = storage_semantics(Storage), Item = {{Tab, Key}, Val, Op}, case InitBy of startup -> disc_insert(Tid, Storage, Tab, Key, Val, Op, InPlace, InitBy); - _ when Storage == ram_copies -> + _ when Semantics == ram_copies -> mnesia_tm:do_update_op(Tid, Storage, Item), Snmp = mnesia_tm:prepare_snmp(Tab, Key, [Item]), mnesia_tm:do_snmp(Tid, Snmp); - _ when Storage == disc_copies -> + _ when Semantics == disc_copies -> disc_insert(Tid, Storage, Tab, Key, Val, Op, InPlace, InitBy), mnesia_tm:do_update_op(Tid, Storage, Item), Snmp = mnesia_tm:prepare_snmp(Tab, Key, [Item]), mnesia_tm:do_snmp(Tid, Snmp); - _ when Storage == disc_only_copies -> + _ when Semantics == disc_only_copies -> + mnesia_tm:do_update_op(Tid, Storage, Item), + Snmp = mnesia_tm:prepare_snmp(Tab, Key, [Item]), + mnesia_tm:do_snmp(Tid, Snmp); + + _ when element(1, Storage) == ext -> mnesia_tm:do_update_op(Tid, Storage, Item), Snmp = mnesia_tm:prepare_snmp(Tab, Key, [Item]), mnesia_tm:do_snmp(Tid, Snmp); @@ -456,6 +478,9 @@ insert(Tid, Storage, Tab, Key, Val, Op, InPlace, InitBy) -> ignore end. +disc_delete_table(Tab, {ext, Alias, Mod}) -> + Mod:close_table(Alias, Tab), + Mod:delete_table(Alias, Tab); disc_delete_table(Tab, Storage) -> case mnesia_monitor:use_dir() of true -> @@ -485,11 +510,14 @@ disc_delete_table(Tab, Storage) -> ok end. -disc_delete_indecies(_Tab, _Cs, Storage) when Storage /= disc_only_copies -> - ok; -disc_delete_indecies(Tab, Cs, disc_only_copies) -> - Indecies = Cs#cstruct.index, - mnesia_index:del_transient(Tab, Indecies, disc_only_copies). +disc_delete_indecies(Tab, Cs, Storage) -> + case storage_semantics(Storage) of + disc_only_copies -> + Indecies = Cs#cstruct.index, + mnesia_index:del_transient(Tab, Indecies, Storage); + _ -> + ok + end. insert_op(Tid, Storage, {{Tab, Key}, Val, Op}, InPlace, InitBy) -> %% Propagate to disc only @@ -515,6 +543,8 @@ insert_op(Tid, _, {op, change_table_copy_type, N, FromS, ToS, TabDef}, InPlace, Cs = mnesia_schema:list2cs(TabDef), Val = mnesia_schema:insert_cstruct(Tid, Cs, true), % Update ram only {schema, Tab, _} = Val, + FromSem = storage_semantics(FromS), + ToSem = storage_semantics(ToS), case lists:member(N, val({current, db_nodes})) of true when InitBy /= startup -> mnesia_controller:add_active_replica(Tab, N, Cs); @@ -527,62 +557,118 @@ insert_op(Tid, _, {op, change_table_copy_type, N, FromS, ToS, TabDef}, InPlace, Dat = mnesia_lib:tab2dat(Tab), Dcd = mnesia_lib:tab2dcd(Tab), Dcl = mnesia_lib:tab2dcl(Tab), + Logtmp = mnesia_lib:tab2logtmp(Tab), case {FromS, ToS} of - {ram_copies, disc_copies} when Tab == schema -> - ok = ensure_rename(Dmp, Dat); - {ram_copies, disc_copies} -> - file:delete(Dcl), - ok = ensure_rename(Dmp, Dcd); - {disc_copies, ram_copies} when Tab == schema -> - mnesia_lib:set(use_dir, false), - mnesia_monitor:unsafe_close_dets(Tab), - ok = file:delete(Dat); - {disc_copies, ram_copies} -> - _ = file:delete(Dcl), - _ = file:delete(Dcd), - ok; - {ram_copies, disc_only_copies} -> - ok = ensure_rename(Dmp, Dat), - true = open_files(Tab, disc_only_copies, InPlace, InitBy), - %% ram_delete_table must be done before init_indecies, - %% it uses info which is reset in init_indecies, - %% it doesn't matter, because init_indecies don't use - %% the ram replica of the table when creating the disc - %% index; Could be improved :) - mnesia_schema:ram_delete_table(Tab, FromS), - PosList = Cs#cstruct.index, - mnesia_index:init_indecies(Tab, disc_only_copies, PosList); - {disc_only_copies, ram_copies} -> - mnesia_monitor:unsafe_close_dets(Tab), - disc_delete_indecies(Tab, Cs, disc_only_copies), - case InitBy of - startup -> - ignore; + {{ext,_FromAlias,_FromMod},{ext,ToAlias,ToMod}} -> + disc_delete_table(Tab, FromS), + ok = ToMod:delete_table(ToAlias, Tab), + ok = ToMod:create_table(ToAlias, Tab, []), + ok = ToMod:load_table(ToAlias, Tab, {dumper,change_table_copy_type}, TabDef), + ok = load_from_logfile(ToS, Tab, Logtmp), + file:delete(Logtmp), + restore_indexes(Tab, ToS, Cs); + + {_,{ext,ToAlias,ToMod}} -> + case FromSem of + ram_copies -> + mnesia_schema:ram_delete_table(Tab, FromS); _ -> - mnesia_controller:get_disc_copy(Tab), - ok + if FromSem == disc_copies -> + mnesia_schema:ram_delete_table( + Tab, FromS); + true -> ok + end, + disc_delete_table(Tab, FromS) end, - disc_delete_table(Tab, disc_only_copies); - {disc_copies, disc_only_copies} -> - ok = ensure_rename(Dmp, Dat), - true = open_files(Tab, disc_only_copies, InPlace, InitBy), - mnesia_schema:ram_delete_table(Tab, FromS), - PosList = Cs#cstruct.index, - mnesia_index:init_indecies(Tab, disc_only_copies, PosList), - _ = file:delete(Dcl), - _ = file:delete(Dcd), - ok; - {disc_only_copies, disc_copies} -> - mnesia_monitor:unsafe_close_dets(Tab), - disc_delete_indecies(Tab, Cs, disc_only_copies), - case InitBy of - startup -> - ignore; - _ -> - mnesia_log:ets2dcd(Tab), - mnesia_controller:get_disc_copy(Tab), - disc_delete_table(Tab, disc_only_copies) - end + + ok = ToMod:delete_table(ToAlias, Tab), + ok = ToMod:create_table(ToAlias, Tab, []), + ok = ToMod:load_table(ToAlias, Tab, {dumper,change_table_copy_type}, TabDef), + ok = load_from_logfile(ToS, Tab, Logtmp), + file:delete(Logtmp), + restore_indexes(Tab, ToS, Cs); + + {{ext,_FromAlias,_FromMod} = FromS, ToS} -> + disc_delete_table(Tab, FromS), + case ToS of + ram_copies -> + change_disc_to_ram( + Tab, Cs, FromS, ToS, Logtmp, InitBy); + disc_copies -> + Args = [{keypos, 2}, public, named_table, + Cs#cstruct.type], + mnesia_monitor:mktab(Tab, Args), + ok = load_from_logfile(ToS, Tab, Logtmp), + file:delete(Logtmp); + disc_only_copies -> + %% ok = ensure_rename(Dmp, Dat), + true = open_files(Tab, ToS, InPlace, InitBy), + ok = load_from_logfile(ToS, Tab, Logtmp), + file:delete(Logtmp) + end, + restore_indexes(Tab, ToS, Cs); + + _NoneAreExt -> + + case {FromSem, ToSem} of + {ram_copies, disc_copies} when Tab == schema -> + ok = ensure_rename(Dmp, Dat); + {ram_copies, disc_copies} -> + file:delete(Dcl), + ok = ensure_rename(Dmp, Dcd); + {disc_copies, ram_copies} when Tab == schema -> + mnesia_lib:set(use_dir, false), + mnesia_monitor:unsafe_close_dets(Tab), + ok = file:delete(Dat); + {disc_copies, ram_copies} -> + _ = file:delete(Dcl), + _ = file:delete(Dcd), + ok; + {ram_copies, disc_only_copies} -> + ok = ensure_rename(Dmp, Dat), + true = open_files(Tab, ToS, InPlace, InitBy), + %% ram_delete_table must be done before + %% init_indecies, it uses info which is reset + %% in init_indecies, it doesn't matter, because + %% init_indecies don't use the ram replica of + %% the table when creating the disc index; + %% Could be improved :) + mnesia_schema:ram_delete_table(Tab, FromS), + restore_indexes(Tab, ToS, Cs); + {disc_only_copies, ram_copies} when FromS == disc_only_copies -> + mnesia_monitor:unsafe_close_dets(Tab), + disc_delete_indecies(Tab, Cs, FromS), + case InitBy of + startup -> + ignore; + _ -> + mnesia_controller:get_disc_copy(Tab), + ok + end, + disc_delete_table(Tab, FromS); + {disc_only_copies, ram_copies} when element(1, FromS) == ext -> + change_disc_to_ram( + Tab, Cs, FromS, ToS, Logtmp, InitBy); + {disc_copies, disc_only_copies} -> + ok = ensure_rename(Dmp, Dat), + true = open_files(Tab, ToS, InPlace, InitBy), + mnesia_schema:ram_delete_table(Tab, FromS), + restore_indexes(Tab, ToS, Cs), + _ = file:delete(Dcl), + _ = file:delete(Dcd), + ok; + {disc_only_copies, disc_copies} -> + mnesia_monitor:unsafe_close_dets(Tab), + disc_delete_indecies(Tab, Cs, disc_only_copies), + case InitBy of + startup -> + ignore; + _ -> + mnesia_log:ets2dcd(Tab), + mnesia_controller:get_disc_copy(Tab), + disc_delete_table(Tab, disc_only_copies) + end + end end; true -> ignore @@ -607,6 +693,9 @@ insert_op(Tid, _, {op, restore_recreate, TabDef}, InPlace, InitBy) -> Tab = Cs#cstruct.name, Type = Cs#cstruct.type, Storage = mnesia_lib:cs_to_storage_type(node(), Cs), + Semantics = if Storage==unknown -> unknown; + true -> storage_semantics(Storage) + end, %% Delete all possibly existing files and tables disc_delete_table(Tab, Storage), disc_delete_indecies(Tab, Cs, Storage), @@ -625,13 +714,13 @@ insert_op(Tid, _, {op, restore_recreate, TabDef}, InPlace, InitBy) -> %% And create new ones.. if - (InitBy == startup) or (Storage == unknown) -> + (InitBy == startup) or (Semantics == unknown) -> ignore; - Storage == ram_copies -> + Semantics == ram_copies -> EtsProps = proplists:get_value(ets, StorageProps, []), Args = [{keypos, 2}, public, named_table, Type | EtsProps], mnesia_monitor:mktab(Tab, Args); - Storage == disc_copies -> + Semantics == disc_copies -> EtsProps = proplists:get_value(ets, StorageProps, []), Args = [{keypos, 2}, public, named_table, Type | EtsProps], mnesia_monitor:mktab(Tab, Args), @@ -640,7 +729,7 @@ insert_op(Tid, _, {op, restore_recreate, TabDef}, InPlace, InitBy) -> {repair, false}, {mode, read_write}], {ok, Log} = mnesia_monitor:open_log(FArg), mnesia_monitor:unsafe_close_log(Log); - Storage == disc_only_copies -> + Storage == disc_only_copies -> % note: Storage, not Semantics File = mnesia_lib:tab2dat(Tab), file:delete(File), DetsProps = proplists:get_value(dets, StorageProps, []), @@ -649,7 +738,10 @@ insert_op(Tid, _, {op, restore_recreate, TabDef}, InPlace, InitBy) -> {keypos, 2}, {repair, mnesia_monitor:get_env(auto_repair)} | DetsProps ], - mnesia_monitor:open_dets(Tab, Args) + mnesia_monitor:open_dets(Tab, Args); + element(1,Storage) == ext -> + {ext, Alias, Mod} = Storage, + Mod:create_table(Alias, Tab, []) end, insert_op(Tid, ignore, {op, create_table, TabDef}, InPlace, InitBy); @@ -659,9 +751,10 @@ insert_op(Tid, _, {op, create_table, TabDef}, InPlace, InitBy) -> Tab = Cs#cstruct.name, Storage = mnesia_lib:cs_to_storage_type(node(), Cs), StorageProps = Cs#cstruct.storage_properties, + Semantics = storage_semantics(Storage), case InitBy of startup -> - case Storage of + case Semantics of unknown -> ignore; ram_copies -> @@ -679,20 +772,10 @@ insert_op(Tid, _, {op, create_table, TabDef}, InPlace, InitBy) -> read_write), mnesia_log:unsafe_close_log(temp) end; - _ -> + disc_only_copies -> DetsProps = proplists:get_value(dets, StorageProps, []), - Args = [{file, mnesia_lib:tab2dat(Tab)}, - {type, mnesia_lib:disk_type(Tab, Cs#cstruct.type)}, - {keypos, 2}, - {repair, mnesia_monitor:get_env(auto_repair)} - | DetsProps ], - case mnesia_monitor:open_dets(Tab, Args) of - {ok, _} -> - mnesia_monitor:unsafe_close_dets(Tab); - {error, Error} -> - exit({"Failed to create dets table", Error}) - end + try_create_disc_only_copy(Storage, Tab, Cs, DetsProps) end; _ -> Copies = mnesia_lib:copy_holders(Cs), @@ -715,7 +798,7 @@ insert_op(Tid, _, {op, create_table, TabDef}, InPlace, InitBy) -> false -> mnesia_lib:set({Tab, where_to_read}, node()) end, - case Storage of + case Semantics of ram_copies -> ignore; _ -> @@ -838,7 +921,7 @@ insert_op(Tid, _, {op, del_table_copy, Storage, Node, TabDef}, InPlace, InitBy) insert_cstruct(Tid, Cs, true, InPlace, InitBy); Tab /= schema -> mnesia_controller:del_active_replica(Tab, Node), - mnesia_lib:del({Tab, Storage}, Node), + mnesia_lib:del({Tab, storage_alias(Storage)}, Node), if Node == node() -> case Cs#cstruct.local_content of @@ -896,9 +979,10 @@ insert_op(Tid, _, {op, add_index, Pos, TabDef}, InPlace, InitBy) -> Cs = mnesia_schema:list2cs(TabDef), Tab = insert_cstruct(Tid, Cs, true, InPlace, InitBy), Storage = mnesia_lib:cs_to_storage_type(node(), Cs), + Semantics = storage_semantics(Storage), case InitBy of - startup when Storage == disc_only_copies -> - true = open_files(Tab, Storage, InPlace, InitBy), + startup when Semantics == disc_only_copies -> + true = open_files(Tab, Semantics, Storage, InPlace, InitBy), mnesia_index:init_indecies(Tab, Storage, [Pos]); startup -> ignore; @@ -919,6 +1003,8 @@ insert_op(Tid, _, {op, del_index, Pos, TabDef}, InPlace, InitBy) -> mnesia_index:del_index_table(Tab, Storage, Pos); startup -> ignore; + _ when element(1, Storage) == ext -> + mnesia_index:del_index_table(Tab, Storage, Pos); _ -> mnesia_index:del_index_table(Tab, Storage, Pos) end, @@ -958,19 +1044,68 @@ insert_op(Tid, _, {op, change_table_frag, _Change, TabDef}, InPlace, InitBy) -> Cs = mnesia_schema:list2cs(TabDef), insert_cstruct(Tid, Cs, true, InPlace, InitBy). -open_files(Tab, Storage, UpdateInPlace, InitBy) - when Storage /= unknown, Storage /= ram_copies -> + +storage_semantics({ext, Alias, Mod}) -> + Mod:semantics(Alias, storage); +storage_semantics(Storage) when is_atom(Storage) -> + Storage. + +storage_alias({ext, Alias, _}) -> + Alias; +storage_alias(Storage) when is_atom(Storage) -> + Storage. + +change_disc_to_ram(Tab, Cs, FromS, ToS, Logtmp, InitBy) -> + disc_delete_indecies(Tab, Cs, FromS), + case InitBy of + startup -> + ignore; + _ -> + %% ram table will already have been created + Tab = ets:info(Tab, name), %% assertion + load_from_logfile(ToS, Tab, Logtmp), + PosList = Cs#cstruct.index, + mnesia_index:init_indecies(Tab, ToS, PosList) + end, + disc_delete_table(Tab, FromS). + + +try_create_disc_only_copy({ext,Alias,Mod}, Tab, Cs, _) -> + Mod:create_table(Alias, Tab, mnesia_schema:cs2list(Cs)); +try_create_disc_only_copy(disc_only_copies, Tab, Cs, DetsProps) -> + Args = [{file, mnesia_lib:tab2dat(Tab)}, + {type, mnesia_lib:disk_type(Tab, Cs#cstruct.type)}, + {keypos, 2}, + {repair, mnesia_monitor:get_env(auto_repair)} + | DetsProps], + case mnesia_monitor:open_dets(Tab, Args) of + {ok, _} -> + mnesia_monitor:unsafe_close_dets(Tab); + {error, Error} -> + exit({"Failed to create dets table", Error}) + end. + +restore_indexes(Tab, ToS, Cs) -> + PosList = Cs#cstruct.index, + mnesia_index:init_indecies(Tab, ToS, PosList). + + +open_files(Tab, Storage, UpdateInPlace, InitBy) -> + open_files(Tab, storage_semantics(Storage), Storage, UpdateInPlace, InitBy). + +open_files(Tab, Semantics, Storage, UpdateInPlace, InitBy) + when Storage /= unknown, Semantics /= ram_copies -> case get({?MODULE, Tab}) of undefined -> case ?catch_val({Tab, setorbag}) of {'EXIT', _} -> false; Type -> - case Storage of - disc_copies when Tab /= schema -> + Cs = val({Tab, cstruct}), + if Semantics == disc_copies, Tab /= schema -> Bool = open_disc_copies(Tab, InitBy), Bool; - _ -> + Storage == disc_only_copies; Tab == schema -> Props = val({Tab, storage_properties}), DetsProps = proplists:get_value(dets, Props, []), Fname = prepare_open(Tab, UpdateInPlace), @@ -981,6 +1116,12 @@ open_files(Tab, Storage, UpdateInPlace, InitBy) | DetsProps], {ok, _} = mnesia_monitor:open_dets(Tab, Args), put({?MODULE, Tab}, {opened_dumper, dat}), + true; + element(1, Storage) == ext -> + {ext, Alias, Mod} = Storage, + Mod:load_table(Alias, Tab, InitBy, + mnesia_schema:cs2list(Cs)), + put({?MODULE, Tab}, {opened_dumper, ext}), true end end; @@ -989,7 +1130,7 @@ open_files(Tab, Storage, UpdateInPlace, InitBy) {opened_dumper, _} -> true end; -open_files(_Tab, _Storage, _UpdateInPlace, _InitBy) -> +open_files(_Tab, _Semantics, _Storage, _UpdateInPlace, _InitBy) -> false. open_disc_copies(Tab, InitBy) -> @@ -1076,12 +1217,13 @@ close_files(InPlace, Outcome, InitBy, [{{?MODULE, Tab}, already_dumped} | Tail]) close_files(InPlace, Outcome, InitBy, Tail); close_files(InPlace, Outcome, InitBy, [{{?MODULE, Tab}, {opened_dumper, Type}} | Tail]) -> erase({?MODULE, Tab}), - case val({Tab, storage_type}) of + Storage = val({Tab, storage_type}), + case storage_semantics(Storage) of disc_only_copies when InitBy /= startup -> ignore; - disc_copies when Tab /= schema -> + disc_copies when Storage /= unknown, Tab /= schema -> mnesia_log:close_log({?MODULE,Tab}); - Storage -> + _ -> do_close(InPlace, Outcome, Tab, Type, Storage) end, close_files(InPlace, Outcome, InitBy, Tail); @@ -1093,11 +1235,16 @@ close_files(_, _, _InitBy, []) -> %% If storage is unknown during close clean up files, this can happen if timing %% is right and dirty_write conflicts with schema operations. +do_close(_, _, Tab, ext, {ext,Alias,Mod}) -> + Mod:close_table(Alias, Tab); do_close(_, _, Tab, dcl, unknown) -> mnesia_log:close_log({?MODULE,Tab}), file:delete(mnesia_lib:tab2dcl(Tab)); do_close(_, _, Tab, dcl, _) -> %% To be safe, can it happen? mnesia_log:close_log({?MODULE,Tab}); +do_close(_, _, _Tab, ext, unknown) -> + %% Not sure what to do here, but let's not crash + ok; do_close(InPlace, Outcome, Tab, dat, Storage) -> mnesia_monitor:close_dets(Tab), @@ -1148,7 +1295,8 @@ temp_set_master_nodes() -> Tabs = val({schema, local_tables}), Masters = [{Tab, (val({Tab, disc_copies}) ++ val({Tab, ram_copies}) ++ - val({Tab, disc_only_copies})) -- [node()]} + val({Tab, disc_only_copies}) ++ + external_copies(Tab)) -- [node()]} || Tab <- Tabs], %% UseDir = false since we don't want to remember these %% masternodes and we are running (really soon anyway) since we want this @@ -1156,6 +1304,13 @@ temp_set_master_nodes() -> mnesia_recover:log_master_nodes(Masters, false, yes), ok. +external_copies(Tab) -> + case ?catch_val({Tab, external_copies}) of + {'EXIT',_} -> []; + Ext -> + lists:concat([Ns || {_, Ns} <- Ext]) + end. + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Raw dump of table. Dumper must have unique access to the ets table. @@ -1207,6 +1362,57 @@ raw_named_dump_table(Tab, Ftype) -> raw_dump_table(DetsRef, EtsRef) -> dets:from_ets(DetsRef, EtsRef). +dump_to_logfile(Storage, Tab) -> + case mnesia_monitor:use_dir() of + true -> + Logtmp = mnesia_lib:tab2logtmp(Tab), + file:delete(Logtmp), + case disk_log:open([{name, make_ref()}, + {file, Logtmp}, + {repair, false}, + {linkto, self()}]) of + {ok, Fd} -> + mnesia_lib:db_fixtable(Storage, Tab, true), + try do_dump_to_logfile(Storage, Tab, Fd) + after + mnesia_lib:db_fixtable(Storage, Tab, false) + end; + {error, _} = Error -> + Error + end; + false -> + {error, {has_no_disc, node()}} + end. + +do_dump_to_logfile(Storage, Tab, Fd) -> + Pat = [{'_',[],['$_']}], + log_terms(mnesia_lib:db_select_init(Storage, Tab, Pat, 100), Storage, Tab, Pat, Fd). + +log_terms({Objs, Cont}, Storage, Tab, Pat, Fd) -> + ok = disk_log:alog_terms(Fd, Objs), + log_terms(mnesia_lib:db_select_cont(Storage, Cont, '_'), Storage, Tab, Pat, Fd); +log_terms('$end_of_table', _, _, _, Fd) -> + disk_log:close(Fd). + +load_from_logfile(Storage, Tab, F) -> + case disk_log:open([{name, make_ref()}, + {file, F}, + {repair, true}, + {linkto, self()}]) of + {ok, Fd} -> + chunk_from_log(disk_log:chunk(Fd, start), Fd, Storage, Tab); + {error, _} = E -> + E + end. + +chunk_from_log({Cont, Terms}, Fd, Storage, Tab) -> + _ = [mnesia_lib:db_put(Storage, Tab, T) || T <- Terms], + chunk_from_log(disk_log:chunk(Fd, Cont), Fd, Storage, Tab); +chunk_from_log(eof, _, _, _) -> + ok. + + + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Load regulator %% |