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Date:      Fri, 15 Jun 2012 18:57:43 +0700
From:      Eugene Grosbein <egrosbein@rdtc.ru>
To:        Przemyslaw Frasunek <venglin@freebsd.lublin.pl>
Cc:        freebsd-net@freebsd.org, Andriy Gapon <avg@icyb.net.ua>
Subject:   Re: mpd5/Netgraph issues after upgrading to 7.4
Message-ID:  <4FDB2337.1030403@rdtc.ru>
In-Reply-To: <4FDB2180.4030609@rdtc.ru>
References:  <4DAD3824.7000500@frasunek.com>	<20110419074056.GG34767@glebius.int.ru>	<4DB47CE1.8@frasunek.com> <4DB487D2.7030104@rdtc.ru>	<4DB48B76.8050101@frasunek.com> <4DB49109.3050002@frasunek.com>	<20110425050548.GF34767@glebius.int.ru>	<4DBBBAD8.2000705@frasunek.com>	<20110513162311.GK95084@glebius.int.ru>	<4DD298AD.2060905@frasunek.com>	<20110517184613.GN74366@glebius.int.ru>	<4FDB1D71.6050908@freebsd.lublin.pl> <4FDB2180.4030609@rdtc.ru>

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15.06.2012 18:50, Eugene Grosbein пишет:

>> 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

Sorry, right URL is: http://www.grosbein.net/freebsd/patches/stop_scheduler_on_panic.usb.diff

Eugene Grosbein



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