diff options
| -rw-r--r-- | lib/mnesia/doc/src/mnesia.xml | 6 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia_dumper.erl | 44 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia_loader.erl | 7 | ||||
| -rw-r--r-- | lib/mnesia/src/mnesia_monitor.erl | 4 |
4 files changed, 38 insertions, 23 deletions
diff --git a/lib/mnesia/doc/src/mnesia.xml b/lib/mnesia/doc/src/mnesia.xml index 72e9bd7e8f..842f1641dd 100644 --- a/lib/mnesia/doc/src/mnesia.xml +++ b/lib/mnesia/doc/src/mnesia.xml @@ -3017,6 +3017,12 @@ raise(Name, Amount) -> totally unpredictable.</p> </item> <item> + <p><c>-mnesia dump_disc_copies_at_startup true | false</c>. + If set to false, this disables the dumping of <c>disc_copies</c> + tables during startup while tables are being loaded. The default + is true.</p> + </item> + <item> <p><c>-mnesia dump_log_load_regulation true | false</c>. Controls if the log dumps should be performed as fast as possible or if the dumper should do its own load diff --git a/lib/mnesia/src/mnesia_dumper.erl b/lib/mnesia/src/mnesia_dumper.erl index 14665797a0..b784f2aca3 100644 --- a/lib/mnesia/src/mnesia_dumper.erl +++ b/lib/mnesia/src/mnesia_dumper.erl @@ -34,6 +34,7 @@ -export([ get_log_writes/0, incr_log_writes/0, + needs_dump_ets/1, raw_dump_table/2, raw_named_dump_table/2, start_regulator/0, @@ -981,28 +982,10 @@ open_files(_Tab, _Storage, _UpdateInPlace, _InitBy) -> false. open_disc_copies(Tab, InitBy) -> - DclF = mnesia_lib:tab2dcl(Tab), - DumpEts = - case file:read_file_info(DclF) of - {error, enoent} -> - false; - {ok, DclInfo} -> - DcdF = mnesia_lib:tab2dcd(Tab), - case file:read_file_info(DcdF) of - {error, Reason} -> - mnesia_lib:dbg_out("File ~p info_error ~p ~n", - [DcdF, Reason]), - true; - {ok, DcdInfo} -> - Mul = case ?catch_val(dc_dump_limit) of - {'EXIT', _} -> ?DumpToEtsMultiplier; - Val -> Val - end, - DcdInfo#file_info.size =< (DclInfo#file_info.size * Mul) - end - end, + DumpEts = needs_dump_ets(Tab), if DumpEts == false; InitBy == startup -> + DclF = mnesia_lib:tab2dcl(Tab), mnesia_log:open_log({?MODULE,Tab}, mnesia_log:dcl_log_header(), DclF, @@ -1017,6 +1000,27 @@ open_disc_copies(Tab, InitBy) -> false end. +needs_dump_ets(Tab) -> + DclF = mnesia_lib:tab2dcl(Tab), + case file:read_file_info(DclF) of + {error, enoent} -> + false; + {ok, DclInfo} -> + DcdF = mnesia_lib:tab2dcd(Tab), + case file:read_file_info(DcdF) of + {error, Reason} -> + mnesia_lib:dbg_out("File ~p info_error ~p ~n", + [DcdF, Reason]), + true; + {ok, DcdInfo} -> + Mul = case ?catch_val(dc_dump_limit) of + {'EXIT', _} -> ?DumpToEtsMultiplier; + Val -> Val + end, + DcdInfo#file_info.size =< (DclInfo#file_info.size * Mul) + end + end. + %% Always opens the dcl file for writing overriding already_dumped %% mechanismen, used for schema transactions. open_dcl(Tab) -> diff --git a/lib/mnesia/src/mnesia_loader.erl b/lib/mnesia/src/mnesia_loader.erl index 4afbea1cc2..ebd68c226a 100644 --- a/lib/mnesia/src/mnesia_loader.erl +++ b/lib/mnesia/src/mnesia_loader.erl @@ -69,9 +69,10 @@ do_get_disc_copy2(Tab, Reason, Storage, Type) when Storage == disc_copies -> ignore; _ -> mnesia_monitor:mktab(Tab, Args), - Count = mnesia_log:dcd2ets(Tab, Repair), - case ets:info(Tab, size) of - X when X < Count * 4 -> + _Count = mnesia_log:dcd2ets(Tab, Repair), + case mnesia_monitor:get_env(dump_disc_copies_at_startup) + andalso mnesia_dumper:needs_dump_ets(Tab) of + true -> ok = mnesia_log:ets2dcd(Tab); _ -> ignore diff --git a/lib/mnesia/src/mnesia_monitor.erl b/lib/mnesia/src/mnesia_monitor.erl index 6fc1a394a6..a0e0e630ec 100644 --- a/lib/mnesia/src/mnesia_monitor.erl +++ b/lib/mnesia/src/mnesia_monitor.erl @@ -664,6 +664,7 @@ env() -> backup_module, debug, dir, + dump_disc_copies_at_startup, dump_log_load_regulation, dump_log_time_threshold, dump_log_update_in_place, @@ -692,6 +693,8 @@ default_env(debug) -> default_env(dir) -> Name = lists:concat(["Mnesia.", node()]), filename:absname(Name); +default_env(dump_disc_copies_at_startup) -> + true; default_env(dump_log_load_regulation) -> false; default_env(dump_log_time_threshold) -> @@ -741,6 +744,7 @@ do_check_type(debug, trace) -> trace; do_check_type(debug, true) -> debug; do_check_type(debug, verbose) -> verbose; do_check_type(dir, V) -> filename:absname(V); +do_check_type(dump_disc_copies_at_startup, B) -> bool(B); do_check_type(dump_log_load_regulation, B) -> bool(B); do_check_type(dump_log_time_threshold, I) when is_integer(I), I > 0 -> I; do_check_type(dump_log_update_in_place, B) -> bool(B); |