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-rw-r--r--lib/mnesia/src/mnesia_controller.erl18
-rw-r--r--lib/mnesia/src/mnesia_schema.erl181
2 files changed, 119 insertions, 80 deletions
diff --git a/lib/mnesia/src/mnesia_controller.erl b/lib/mnesia/src/mnesia_controller.erl
index 8a02fe0226..1d3bd55b48 100644
--- a/lib/mnesia/src/mnesia_controller.erl
+++ b/lib/mnesia/src/mnesia_controller.erl
@@ -287,21 +287,9 @@ get_remote_cstructs() ->
%% Old function kept for backwards compatibility; converts cstructs before sending.
get_cstructs() ->
- {cstructs, Cstructs, Running} = Reply = call(get_cstructs),
- case is_remote_call() of
- {true, Node} ->
- {cstructs, normalize_cstructs(Cstructs, Node), Running};
- false ->
- Reply
- end.
-
-is_remote_call() ->
- case node(group_leader()) of
- N when N =/= node() ->
- {true, N};
- _ ->
- false
- end.
+ {cstructs, Cstructs, Running} = call(get_cstructs),
+ Node = node(group_leader()),
+ {cstructs, normalize_cstructs(Cstructs, Node), Running}.
normalize_cstructs(Cstructs, Node) ->
%% backward-compatibility hack; normalize before returning
diff --git a/lib/mnesia/src/mnesia_schema.erl b/lib/mnesia/src/mnesia_schema.erl
index 5018fa5cba..05be474aea 100644
--- a/lib/mnesia/src/mnesia_schema.erl
+++ b/lib/mnesia/src/mnesia_schema.erl
@@ -628,15 +628,56 @@ do_insert_schema_ops(_Store, []) ->
cs2list(Cs) when is_record(Cs, cstruct) ->
Tags = record_info(fields, cstruct),
- rec2list(Tags, 2, Cs);
+ rec2list(Tags, Tags, 2, Cs);
cs2list(CreateList) when is_list(CreateList) ->
- CreateList.
-
-rec2list([Tag | Tags], Pos, Rec) ->
+ CreateList;
+%% 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) ->
+ 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).
+
+rec2list([Tag | Tags], [Tag | Orig], Pos, Rec) ->
Val = element(Pos, Rec),
- [{Tag, Val} | rec2list(Tags, Pos + 1, Rec)];
-rec2list([], _Pos, _Rec) ->
- [].
+ [{Tag, Val} | rec2list(Tags, Orig, Pos + 1, Rec)];
+rec2list([], _, _Pos, _Rec) ->
+ [];
+rec2list(Tags, [_|Orig], Pos, Rec) ->
+ rec2list(Tags, Orig, Pos+1, Rec).
+
+api_list2cs(List) when is_list(List) ->
+ Name = pick(unknown, name, List, must),
+ Keys = check_keys(Name, List, record_info(fields, cstruct)),
+ check_duplicates(Name, Keys),
+ list2cs(List);
+api_list2cs(Other) ->
+ mnesia:abort({badarg, Other}).
list2cs(List) when is_list(List) ->
Name = pick(unknown, name, List, must),
@@ -668,9 +709,6 @@ list2cs(List) when is_list(List) ->
Frag = pick(Name, frag_properties, List, []),
verify({alt, [nil, list]}, mnesia_lib:etype(Frag),
{badarg, Name, {frag_properties, Frag}}),
-
- %% Keys = check_keys(Name, List, record_info(fields, cstruct)),
- %% check_duplicates(Name, Keys),
#cstruct{name = Name,
ram_copies = Rc,
disc_copies = Dc,
@@ -687,9 +725,7 @@ list2cs(List) when is_list(List) ->
user_properties = lists:sort(UserProps),
frag_properties = lists:sort(Frag),
cookie = Cookie,
- version = Version};
-list2cs(Other) ->
- mnesia:abort({badarg, Other}).
+ version = Version}.
pick(Tab, Key, List, Default) ->
case lists:keysearch(Key, 1, List) of
@@ -970,7 +1006,7 @@ create_table(TabDef) ->
do_multi_create_table(TabDef) ->
get_tid_ts_and_lock(schema, write),
ensure_writable(schema),
- Cs = list2cs(TabDef),
+ Cs = api_list2cs(TabDef),
case Cs#cstruct.frag_properties of
[] ->
do_create_table(Cs);
@@ -2710,7 +2746,6 @@ merge_schema() ->
merge_schema(UserFun) ->
schema_transaction(fun() -> UserFun(fun(Arg) -> do_merge_schema(Arg) end) end).
-
do_merge_schema(LockTabs0) ->
{_Mod, Tid, Ts} = get_tid_ts_and_lock(schema, write),
LockTabs = [{T, tab_to_nodes(T)} || T <- LockTabs0],
@@ -2732,15 +2767,14 @@ do_merge_schema(LockTabs0) ->
[mnesia_locker:wlock_no_exist(
Tid, Store, T, mnesia_lib:intersect(Ns, OtherNodes))
|| {T,Ns} <- LockTabs],
- case rpc:call(Node, mnesia_controller, get_cstructs, []) of
- {cstructs, Cstructs0, RemoteRunning1} ->
- {Cstructs, DeleteFields} = normalize_remote_cstructs(Cstructs0, Node),
+ case fetch_cstructs(Node) of
+ {cstructs, Cstructs, RemoteRunning1} ->
LockedAlready = Running ++ [Node],
{New, Old} = mnesia_recover:connect_nodes(RemoteRunning1),
RemoteRunning = mnesia_lib:intersect(New ++ Old, RemoteRunning1),
- if
+ if
RemoteRunning /= RemoteRunning1 ->
- mnesia_lib:error("Mnesia on ~p could not connect to node(s) ~p~n",
+ mnesia_lib:error("Mnesia on ~p could not connect to node(s) ~p~n",
[node(), RemoteRunning1 -- RemoteRunning]),
mnesia:abort({node_not_running, RemoteRunning1 -- RemoteRunning});
true -> ok
@@ -2750,17 +2784,16 @@ do_merge_schema(LockTabs0) ->
[mnesia_locker:wlock_no_exist(Tid, Store, T,
mnesia_lib:intersect(Ns,NeedsLock))
|| {T,Ns} <- LockTabs],
- {value, SchemaCs} =
- lists:keysearch(schema, #cstruct.name, Cstructs),
+ NeedsConversion = need_old_cstructs(NeedsLock ++ LockedAlready),
+ {value, SchemaCs} = lists:keysearch(schema, #cstruct.name, Cstructs),
+ SchemaDef = cs2list(NeedsConversion, SchemaCs),
%% Announce that Node is running
- A = [{op, announce_im_running, node(),
- [{K,V} || {K,V} <- cs2list(SchemaCs),
- not lists:member(K, DeleteFields)], Running, RemoteRunning}],
+ A = [{op, announce_im_running, node(), SchemaDef, Running, RemoteRunning}],
do_insert_schema_ops(Store, A),
%% Introduce remote tables to local node
- do_insert_schema_ops(Store, make_merge_schema(Node, Cstructs)),
+ do_insert_schema_ops(Store, make_merge_schema(Node, NeedsConversion, Cstructs)),
%% Introduce local tables to remote nodes
Tabs = val({schema, tables}),
@@ -2784,31 +2817,49 @@ do_merge_schema(LockTabs0) ->
not_merged
end.
-normalize_remote_cstructs([#cstruct{}|_] = Cstructs, _) ->
- {Cstructs, []};
-normalize_remote_cstructs([T|_] = Cstructs, Node) when element(1,T) == cstruct ->
- Flds = [F || {F, _} <- rpc:call(Node, ?MODULE, cs2list, [T])],
- DeleteFields = record_info(fields, cstruct) -- Flds,
- NewCstructs = lists:map(
- fun(Cs) ->
- CsL = lists:zip(Flds, tl(tuple_to_list(Cs))),
- #cstruct{} = list2cs(CsL)
- end, Cstructs),
- {NewCstructs, DeleteFields}.
+fetch_cstructs(Node) ->
+ case mnesia_monitor:needs_protocol_conversion(Node) of
+ true ->
+ case rpc:call(Node, mnesia_controller, get_cstructs, []) of
+ {cstructs, Cs0, RR} ->
+ {cstructs, [list2cs(cs2list(Cs)) || Cs <- Cs0], RR};
+ Err -> Err
+ end;
+ false ->
+ rpc:call(Node, mnesia_controller, get_remote_cstructs, [])
+ end.
+
+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
+ end
+ end.
tab_to_nodes(Tab) when is_atom(Tab) ->
Cs = val({Tab, cstruct}),
mnesia_lib:cs_to_nodes(Cs).
-make_merge_schema(Node, [Cs | Cstructs]) ->
- Ops = do_make_merge_schema(Node, Cs),
- Ops ++ make_merge_schema(Node, Cstructs);
-make_merge_schema(_Node, []) ->
+make_merge_schema(Node, NeedsConv, [Cs | Cstructs]) ->
+ Ops = do_make_merge_schema(Node, NeedsConv, Cs),
+ Ops ++ make_merge_schema(Node, NeedsConv, Cstructs);
+make_merge_schema(_Node, _, []) ->
[].
%% Merge definitions of schema table
-do_make_merge_schema(Node, RemoteCs)
- when RemoteCs#cstruct.name == schema ->
+do_make_merge_schema(Node, NeedsConv, RemoteCs = #cstruct{name = schema}) ->
Cs = val({schema, cstruct}),
Masters = mnesia_recover:get_master_nodes(schema),
HasRemoteMaster = lists:member(Node, Masters),
@@ -2818,15 +2869,15 @@ do_make_merge_schema(Node, RemoteCs)
StCsLocal = mnesia_lib:cs_to_storage_type(node(), Cs),
StRcsLocal = mnesia_lib:cs_to_storage_type(node(), RemoteCs),
StCsRemote = mnesia_lib:cs_to_storage_type(Node, Cs),
- StRcsRemote = mnesia_lib:cs_to_storage_type(Node, RemoteCs),
-
+ StRcsRemote = mnesia_lib:cs_to_storage_type(Node, RemoteCs),
+
if
Cs#cstruct.cookie == RemoteCs#cstruct.cookie,
Cs#cstruct.version == RemoteCs#cstruct.version ->
%% Great, we have the same cookie and version
%% and do not need to merge cstructs
[];
-
+
Cs#cstruct.cookie /= RemoteCs#cstruct.cookie,
Cs#cstruct.disc_copies /= [],
RemoteCs#cstruct.disc_copies /= [] ->
@@ -2837,14 +2888,14 @@ do_make_merge_schema(Node, RemoteCs)
HasRemoteMaster == false ->
%% Choose local cstruct,
%% since it's the master
- [{op, merge_schema, cs2list(Cs)}];
+ [{op, merge_schema, cs2list(NeedsConv, Cs)}];
HasRemoteMaster == true,
HasLocalMaster == false ->
%% Choose remote cstruct,
%% since it's the master
- [{op, merge_schema, cs2list(RemoteCs)}];
-
+ [{op, merge_schema, cs2list(NeedsConv, RemoteCs)}];
+
true ->
Str = io_lib:format("Incompatible schema cookies. "
"Please, restart from old backup."
@@ -2852,12 +2903,12 @@ do_make_merge_schema(Node, RemoteCs)
[Node, cs2list(RemoteCs), node(), cs2list(Cs)]),
throw(Str)
end;
-
+
StCsLocal /= StRcsLocal, StRcsLocal /= unknown, StCsLocal /= ram_copies ->
Str = io_lib:format("Incompatible schema storage types (local). "
"on ~w storage ~w, on ~w storage ~w~n",
[node(), StCsLocal, Node, StRcsLocal]),
- throw(Str);
+ throw(Str);
StCsRemote /= StRcsRemote, StCsRemote /= unknown, StRcsRemote /= ram_copies ->
Str = io_lib:format("Incompatible schema storage types (remote). "
"on ~w cs ~w, on ~w rcs ~w~n",
@@ -2868,27 +2919,27 @@ do_make_merge_schema(Node, RemoteCs)
%% Choose local cstruct,
%% since it involves disc nodes
MergedCs = merge_cstructs(Cs, RemoteCs, Force),
- [{op, merge_schema, cs2list(MergedCs)}];
-
+ [{op, merge_schema, cs2list(NeedsConv, MergedCs)}];
+
RemoteCs#cstruct.disc_copies /= [] ->
%% Choose remote cstruct,
%% since it involves disc nodes
MergedCs = merge_cstructs(RemoteCs, Cs, Force),
- [{op, merge_schema, cs2list(MergedCs)}];
+ [{op, merge_schema, cs2list(NeedsConv, MergedCs)}];
Cs > RemoteCs ->
%% Choose remote cstruct
MergedCs = merge_cstructs(RemoteCs, Cs, Force),
- [{op, merge_schema, cs2list(MergedCs)}];
-
+ [{op, merge_schema, cs2list(NeedsConv, MergedCs)}];
+
true ->
%% Choose local cstruct
MergedCs = merge_cstructs(Cs, RemoteCs, Force),
- [{op, merge_schema, cs2list(MergedCs)}]
+ [{op, merge_schema, cs2list(NeedsConv, MergedCs)}]
end;
%% Merge definitions of normal table
-do_make_merge_schema(Node, RemoteCs) ->
+do_make_merge_schema(Node, NeedsConv, RemoteCs = #cstruct{}) ->
Tab = RemoteCs#cstruct.name,
Masters = mnesia_recover:get_master_nodes(schema),
HasRemoteMaster = lists:member(Node, Masters),
@@ -2897,27 +2948,27 @@ do_make_merge_schema(Node, RemoteCs) ->
case ?catch_val({Tab, cstruct}) of
{'EXIT', _} ->
%% A completely new table, created while Node was down
- [{op, merge_schema, cs2list(RemoteCs)}];
+ [{op, merge_schema, cs2list(NeedsConv, RemoteCs)}];
Cs when Cs#cstruct.cookie == RemoteCs#cstruct.cookie ->
if
Cs#cstruct.version == RemoteCs#cstruct.version ->
%% We have exactly the same version of the
%% table def
[];
-
+
Cs#cstruct.version > RemoteCs#cstruct.version ->
%% Oops, we have different versions
%% of the table def, lets merge them.
%% The only changes that may have occurred
%% is that new replicas may have been added.
MergedCs = merge_cstructs(Cs, RemoteCs, Force),
- [{op, merge_schema, cs2list(MergedCs)}];
-
+ [{op, merge_schema, cs2list(NeedsConv, MergedCs)}];
+
Cs#cstruct.version < RemoteCs#cstruct.version ->
%% Oops, we have different versions
%% of the table def, lets merge them
MergedCs = merge_cstructs(RemoteCs, Cs, Force),
- [{op, merge_schema, cs2list(MergedCs)}]
+ [{op, merge_schema, cs2list(NeedsConv, MergedCs)}]
end;
Cs ->
%% Different cookies, not possible to merge
@@ -2926,13 +2977,13 @@ do_make_merge_schema(Node, RemoteCs) ->
HasRemoteMaster == false ->
%% Choose local cstruct,
%% since it's the master
- [{op, merge_schema, cs2list(Cs)}];
+ [{op, merge_schema, cs2list(NeedsConv, Cs)}];
HasRemoteMaster == true,
HasLocalMaster == false ->
%% Choose remote cstruct,
%% since it's the master
- [{op, merge_schema, cs2list(RemoteCs)}];
+ [{op, merge_schema, cs2list(NeedsConv, RemoteCs)}];
true ->
Str = io_lib:format("Bad cookie in table definition"
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 15:24:32 +0000