mpd5/Netgraph issues after upgrading to 7.4

[Eugene Grosbein]

15.06.2012 18:33, Przemyslaw Frasunek пишет:
> Dear All,
> 
> unfortunately, one of my mpd5 PPPoE access servers started panicing every few
> hours.
> 
> I'm running recent 8.3-STABLE (as of 23th May) with WITNESS, INVARIANTS and
> DEBUG_MEMGUARD compiled. Unfortunately, I'm unable to catch crashdump. For some
> reason, it is not saved on dumpdev.

The reason is that 8-STABLE fails to stop scheduler on panic
that breaks writing of crashdumps.

8.3-STABLE has new sysctl kern.stop_scheduler_on_panic.
You should set it to 1 to get crashdumps saved.

One more: does your box has PS/2 keyboard or USB? It matters too.
For systems having USB keyboard there is another patch needed to obtain
crashdumps (by Andriy Gapon):

http://www.kuzbass.ru/freebsd/patches/stop_scheduler_on_panic.usb.diff

Eugene Grosbein