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Date:      Fri, 10 Sep 2010 16:28:37 +0300
From:      Andriy Gapon <avg@icyb.net.ua>
To:        a.smith@ukgrid.net
Cc:        freebsd-fs@freebsd.org
Subject:   Re: ZFS related kernel panic
Message-ID:  <4C8A3285.3040607@icyb.net.ua>
In-Reply-To: <20100910141110.205866s50jvc8zk0@webmail2.ukgrid.net>
References:  <20100909140000.5744370gkyqv4eo0@webmail2.ukgrid.net>	<20100909182318.11133lqu4q4u1mw4@webmail2.ukgrid.net>	<4C89D6A8.1080107@icyb.net.ua> <20100910141110.205866s50jvc8zk0@webmail2.ukgrid.net>

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on 10/09/2010 16:11 a.smith@ukgrid.net said the following:
> Quoting Andriy Gapon <avg@icyb.net.ua>:
> 
>>
>> Try to add the following options to your kernel:
>> options         KDB
>> options         KDB_TRACE
>>
>> With these a backtrace should be printed before dumping and you should be able
>> take a picture of your screen.
>>
>> -- 
>> Andriy Gapon
>>
> Thanks Andiy,
> 
>   have done, but the useful info is going off the top of the screen before I can
> catch it. Am going to try again, problem is watching the screen every second for
> about an hour!

You can add DDB option, then kernel should enter it on panic instead of
automatically trying to dump and reboot.

-- 
Andriy Gapon



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