diff options
Diffstat (limited to 'lib/mnesia/src/mnesia_schema.erl')
| -rw-r--r-- | lib/mnesia/src/mnesia_schema.erl | 104 |
1 files changed, 16 insertions, 88 deletions
diff --git a/lib/mnesia/src/mnesia_schema.erl b/lib/mnesia/src/mnesia_schema.erl index 2acddccf6e..1bd8703e1d 100644 --- a/lib/mnesia/src/mnesia_schema.erl +++ b/lib/mnesia/src/mnesia_schema.erl @@ -646,54 +646,18 @@ cs2list(Cs) when is_record(Cs, cstruct) -> rec2list(Tags, Tags, 2, Cs); cs2list(CreateList) when is_list(CreateList) -> CreateList; -%% 4.6 + +%% since 4.6 cs2list(Cs) when element(1, Cs) == cstruct, tuple_size(Cs) == 19 -> Tags = [name,type,ram_copies,disc_copies,disc_only_copies, load_order,access_mode,majority,index,snmp,local_content, record_name,attributes, user_properties,frag_properties,storage_properties, cookie,version], - rec2list(Tags, Tags, 2, Cs); -%% 4.4.19 -cs2list(Cs) when element(1, Cs) == cstruct, tuple_size(Cs) == 18 -> - Tags = [name,type,ram_copies,disc_copies,disc_only_copies, - load_order,access_mode,majority,index,snmp,local_content, - record_name,attributes,user_properties,frag_properties, - cookie,version], - rec2list(Tags, Tags, 2, Cs); -%% 4.4.18 and earlier -cs2list(Cs) when element(1, Cs) == cstruct, tuple_size(Cs) == 17 -> - Tags = [name,type,ram_copies,disc_copies,disc_only_copies, - load_order,access_mode,index,snmp,local_content, - record_name,attributes,user_properties,frag_properties, - cookie,version], rec2list(Tags, Tags, 2, Cs). cs2list(false, Cs) -> - cs2list(Cs); -cs2list(ver4_4_18, Cs) -> %% Or earlier - Orig = record_info(fields, cstruct), - Tags = [name,type,ram_copies,disc_copies,disc_only_copies, - load_order,access_mode,index,snmp,local_content, - record_name,attributes,user_properties,frag_properties, - cookie,version], - rec2list(Tags, Orig, 2, Cs); -cs2list(ver4_4_19, Cs) -> - Orig = record_info(fields, cstruct), - Tags = [name,type,ram_copies,disc_copies,disc_only_copies, - load_order,access_mode,majority,index,snmp,local_content, - record_name,attributes,user_properties,frag_properties, - cookie,version], - rec2list(Tags, Orig, 2, Cs); -cs2list(ver4_6, Cs) -> - Orig = record_info(fields, cstruct), - Tags = [name,type,ram_copies,disc_copies,disc_only_copies, - load_order,access_mode,majority,index,snmp,local_content, - record_name,attributes, - user_properties,frag_properties,storage_properties, - cookie,version], - rec2list(Tags, Orig, 2, Cs). - + cs2list(Cs). rec2list([Tag | Tags], [Tag | Orig], Pos, Rec) -> Val = element(Pos, Rec), @@ -703,19 +667,8 @@ rec2list([], _, _Pos, _Rec) -> rec2list(Tags, [_|Orig], Pos, Rec) -> rec2list(Tags, Orig, Pos+1, Rec). -normalize_cs(Cstructs, Node) -> - %% backward-compatibility hack; normalize before returning - case need_old_cstructs([Node]) of - false -> - Cstructs; - Version -> - %% some other format - [convert_cs(Version, Cs) || Cs <- Cstructs] - end. - -convert_cs(Version, Cs) -> - Fields = [Value || {_, Value} <- cs2list(Version, Cs)], - list_to_tuple([cstruct|Fields]). +normalize_cs(Cstructs, _Node) -> + Cstructs. list2cs(List) when is_list(List) -> Name = pick(unknown, name, List, must), @@ -1357,7 +1310,11 @@ do_move_table(schema, _FromNode, _ToNode) -> mnesia:abort({bad_type, schema}); do_move_table(Tab, FromNode, ToNode) when is_atom(FromNode), is_atom(ToNode) -> TidTs = get_tid_ts_and_lock(schema, write), - %% get_tid_ts_and_lock(Tab, write), write locked by load_table in mnesia_loader + AnyOld = lists:any(fun(Node) -> mnesia_monitor:needs_protocol_conversion(Node) end, + [ToNode|val({Tab, where_to_write})]), + if AnyOld -> ignore; %% Leads to deadlock on old nodes + true -> get_tid_ts_and_lock(Tab, write) + end, insert_schema_ops(TidTs, make_move_table(Tab, FromNode, ToNode)); do_move_table(Tab, FromNode, ToNode) -> mnesia:abort({badarg, Tab, FromNode, ToNode}). @@ -1965,7 +1922,7 @@ prepare_op(Tid, {op, add_table_copy, Storage, Node, TabDef}, _WaitFor) -> end, %% Tables are created by mnesia_loader get_network code insert_cstruct(Tid, Cs, true), - case mnesia_controller:get_network_copy(Tab, Cs) of + case mnesia_controller:get_network_copy(Tid, Tab, Cs) of {loaded, ok} -> {true, optional}; {not_loaded, ErrReason} -> @@ -2373,7 +2330,7 @@ undo_prepare_op(_Tid, {op, del_table_copy, _, Node, TabDef}) -> case mnesia_lib:val({Tab, where_to_read}) of nowhere -> mnesia_lib:set_remote_where_to_read(Tab); - true -> + _ -> ignore end end; @@ -2837,40 +2794,11 @@ do_merge_schema(LockTabs0) -> end. fetch_cstructs(Node) -> - case need_old_cstructs([Node]) of - false -> - rpc:call(Node, mnesia_controller, get_remote_cstructs, []); - _Ver -> - case rpc:call(Node, mnesia_controller, get_cstructs, []) of - {cstructs, Cs0, RR} -> - {cstructs, [list2cs(cs2list(Cs)) || Cs <- Cs0], RR}; - Err -> Err - end - end. + rpc:call(Node, mnesia_controller, get_remote_cstructs, []). -need_old_cstructs() -> - need_old_cstructs(val({schema, where_to_write})). - -need_old_cstructs(Nodes) -> - Filter = fun(Node) -> not mnesia_monitor:needs_protocol_conversion(Node) end, - case lists:dropwhile(Filter, Nodes) of - [] -> false; - [Node|_] -> - case rpc:call(Node, mnesia_lib, val, [{schema,cstruct}]) of - #cstruct{} -> - %% mnesia_lib:warning("Mnesia on ~p do not need to convert cstruct (~p)~n", - %% [node(), Node]), - false; - {badrpc, _} -> - need_old_cstructs(lists:delete(Node,Nodes)); - Cs when element(1, Cs) == cstruct, tuple_size(Cs) == 17 -> - ver4_4_18; % Without majority - Cs when element(1, Cs) == cstruct, tuple_size(Cs) == 18 -> - ver4_4_19; % With majority - Cs when element(1, Cs) == cstruct, tuple_size(Cs) == 19 -> - ver4_6 % With storage_properties - end - end. +need_old_cstructs() -> false. + +need_old_cstructs(_Nodes) -> false. tab_to_nodes(Tab) when is_atom(Tab) -> Cs = val({Tab, cstruct}), |