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authorUlf Wiger <[email protected]>2015-11-19 13:31:23 +0100
committerDan Gudmundsson <[email protected]>2016-05-09 14:54:17 +0200
commit08bfbfe6c38a61570a2951d4cb7bff99e96f0e30 (patch)
treefc6cd1902e5b7bb814ac5d759c23a120c260a46e /lib/mnesia/src/mnesia_dumper.erl
parent81e90e829faa4fd67da77df51c9b9b82d2f11f3a (diff)
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mnesia_ext: Dumper and schema changes
Diffstat (limited to 'lib/mnesia/src/mnesia_dumper.erl')
-rw-r--r--lib/mnesia/src/mnesia_dumper.erl416
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
%%