[erlang-questions] Mnesia Crash Dump

[Dan Gudmundsson]

It seems that (all?) most of mnesia have stopped, since the ets tables
are deleted, strange.

You can send it to me, and I'll take a quick look at it.

/Dan

On Mon, Feb 22, 2010 at 10:05 PM, Evans, Matthew <mevans@REDACTED> wrote:
> Hi,
>
> I have an mnesia core dump on a distributed Linux platform. The core appeared when I did an mnesia:start().
>
> I'm wondering if mnesia didn't shutdown cleanly after the node was rebooted last. We have a Linux initrd script set at run-level 6 that attempts to do an mnesia:stop() via the erl_call utility. Maybe this failed or timed-out? What is the appropriate way to shutdown mnesia on a reboot of the node?
>
> Salient portions of the mnesia dump are below, the complete dump is available upon request (it's 153KB in size and I'd rather not fill-up all your inboxes). I guess I'd like to know how things got into this state, and what we can do to prevent it.
>
> Any suggestions would be helpful
>
> Many Thanks
>
> Matt
>
>
>
>
> {version,"4.4.11"},
>  {schema,
>     {'EXIT',
>         {badarg,
>             [{ets,match_object,[schema,'_']},
>              {ets,tab2list,1},
>              {mnesia_lib,mkcore,1},
>              {mnesia_lib,fatal,2},
>              {mnesia_sp,init_proc,4},
>              {proc_lib,init_p_do_apply,3}]}}},
>  {gvar,
>     {'EXIT',
>         {badarg,
>             [{ets,match_object,[mnesia_gvar,'_']},
>              {ets,tab2list,1},
>              {mnesia_lib,mkcore,1},
>              {mnesia_lib,fatal,2},
>              {mnesia_sp,init_proc,4},
>              {proc_lib,init_p_do_apply,3}]}}},
>  {master_nodes,[]},
>
> ......
>
>
> {workers,
>     {'EXIT',
>         {function_clause,
>             [{mnesia_lib,workers,[{timeout,2000}]},
>              {mnesia_lib,mkcore,1},
>              {mnesia_lib,fatal,2},
>              {mnesia_sp,init_proc,4},
>              {proc_lib,init_p_do_apply,3}]}}},
>  {locking_procs,
>     {'EXIT',
>         {function_clause,
>             [{mnesia_lib,locking_procs,
>                  [{'EXIT',
>                       {aborted,
>                           {badarg,
>                               [{mnesia_locker,get_held_locks,0},
>                                {mnesia,system_info,1},
>                                {mnesia_lib,mkcore,1},
>                                {mnesia_lib,fatal,2},
>                                {mnesia_sp,init_proc,4},
>                                {proc_lib,init_p_do_apply,3}]}}}]},
>              {mnesia_lib,mkcore,1},
>              {mnesia_lib,fatal,2},
>              {mnesia_sp,init_proc,4},
>              {proc_lib,init_p_do_apply,3}]}}},
>  {held_locks,
>     {'EXIT',
>         {aborted,
>             {badarg,
>                 [{mnesia_locker,get_held_locks,0},
>                  {mnesia,system_info,1},
>                  {mnesia_lib,mkcore,1},
>                  {mnesia_lib,fatal,2},
>                  {mnesia_sp,init_proc,4},
>                  {proc_lib,init_p_do_apply,3}]}}}},
>  {lock_queue,
>     {'EXIT',
>         {aborted,
>             {badarg,
>                 [{mnesia_locker,get_lock_queue,0},
>                  {mnesia,system_info,1},
>                  {mnesia_lib,mkcore,1},
>                  {mnesia_lib,fatal,2},
>                  {mnesia_sp,init_proc,4},
>                  {proc_lib,init_p_do_apply,3}]}}}},
>
>
>