From 567a8276de0b146bfcbf6e81626d11694ca8edf8 Mon Sep 17 00:00:00 2001 From: Dan Gudmundsson Date: Thu, 27 Oct 2011 11:01:36 +0200 Subject: [mnesia] Cleanly bring down mnesia Aviods failing/wobbling testcase. Mnesia mishandled supervisors. --- lib/mnesia/src/mnesia_event.erl | 6 +++--- lib/mnesia/src/mnesia_monitor.erl | 6 +++++- 2 files changed, 8 insertions(+), 4 deletions(-) (limited to 'lib/mnesia/src') diff --git a/lib/mnesia/src/mnesia_event.erl b/lib/mnesia/src/mnesia_event.erl index ec6b99ecaa..5a060a28ff 100644 --- a/lib/mnesia/src/mnesia_event.erl +++ b/lib/mnesia/src/mnesia_event.erl @@ -121,7 +121,7 @@ handle_system_event({mnesia_up, Node}, State) -> {ok, State#state{nodes = Nodes}}; handle_system_event({mnesia_down, Node}, State) -> - case mnesia:system_info(fallback_activated) of + case mnesia:system_info(fallback_activated) andalso Node =/= node() of true -> case mnesia_monitor:get_env(fallback_error_function) of {mnesia, lkill} -> @@ -129,8 +129,8 @@ handle_system_event({mnesia_down, Node}, State) -> "must be restarted. Forcing shutdown " "after mnesia_down from ~p...~n", report_fatal(Msg, [Node], nocore, State#state.dumped_core), - mnesia:lkill(), - exit(fatal); + catch exit(whereis(mnesia_monitor), fatal), + {ok, State}; {UserMod, UserFunc} -> Msg = "Warning: A fallback is installed and Mnesia got mnesia_down " "from ~p. ~n", diff --git a/lib/mnesia/src/mnesia_monitor.erl b/lib/mnesia/src/mnesia_monitor.erl index e110ad3241..8cb2e92c08 100644 --- a/lib/mnesia/src/mnesia_monitor.erl +++ b/lib/mnesia/src/mnesia_monitor.erl @@ -536,7 +536,11 @@ handle_info({'EXIT', Pid, R}, State) when Pid == State#state.supervisor -> handle_info({'EXIT', Pid, fatal}, State) when node(Pid) == node() -> dbg_out("~p got FATAL ERROR from: ~p~n",[?MODULE, Pid]), - exit(State#state.supervisor, shutdown), + %% This may hang supervisor if a shutdown happens at the same time as an fatal + %% is in progress + %% exit(State#state.supervisor, shutdown), + %% It is better to kill an innocent process + catch exit(whereis(mnesia_locker), kill), {noreply, State}; handle_info(Msg = {'EXIT',Pid,_}, State) -> -- cgit v1.2.3