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Date: Wed, 21 Jul 2004 09:32:20 -0700
From: Nate Lawson <nate@root.org>
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To: Roman Kurakin <rik@cronyx.ru>
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cc: cvs-src@FreeBSD.org
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cc: Robert Watson <rwatson@FreeBSD.org>
cc: cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/kern kern_shutdown.c
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Roman Kurakin wrote:
> Robert Watson wrote:
>>  FreeBSD src repository
>>
>>  Modified files:
>>    sys/kern             kern_shutdown.c  Log:
>>  Don't sync the file system on panic by default.  This seems to basically
>>  work very infrequently, and often results in a compound panic which
>>  confuses debugging; locking/SMP have made the layering violation (and
>>  risks) of this more obvious over time.
>>  
>>  Discussed with: green, bde, et al.
>>  
>>  Revision  Changes    Path
>>  1.160     +1 -1      src/sys/kern/kern_shutdown.c
 >
> How to change behavior?
> 
> rik

While Robert's followup was very detailed, I think the answer Rik is looking 
for is "sysctl kern.sync_on_panic".  :)

-Nate