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Date:      Sun, 06 Feb 2011 01:55:50 +0600
From:      Eugene Grosbein <egrosbein@rdtc.ru>
To:        Mike Tancsa <mike@sentex.net>
Cc:        freebsd-net@freebsd.org, Alexander Motin <mav@freebsd.org>, John Baldwin <jhb@freebsd.org>
Subject:   Re: panic: bufwrite: buffer is not busy???
Message-ID:  <4D4DAB46.8080509@rdtc.ru>
In-Reply-To: <4D4D5814.80600@rdtc.ru>
References:  <4D3011DB.9050900@frasunek.com>	<4D30458D.30007@sentex.net>	<4D309983.70709@rdtc.ru>	<201101141437.55421.jhb@freebsd.org>	<4D46575A.802@rdtc.ru>	<4D4670C2.4050500@freebsd.org>	<4D48513C.40503@rdtc.ru>	<20110201185026.GB62007@glebius.int.ru>	<4D4D554B.4050407@rdtc.ru> <4D4D56DD.30902@sentex.net> <4D4D5814.80600@rdtc.ru>

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On 05.02.2011 20:00, Eugene Grosbein wrote:

>>> First: again, no dump (not even started to dump, and no "Uptime:" written to console):
>>
>> if you try and enable dumps manually from the shell,
>>
>> dumpon -v /dev/ad0s1b
>> (or whatever your swap partition is), what does dumpon return with ?
> 
> # . /etc/rc.conf
> # set -x
> # dumpon -v $dumpdev
> + dumpon -v /dev/ad0s4b
> kernel dumps on /dev/ad0s4b

Note: this is NanoBSD running from SSD. It uses ad0s1 and ad0s2 for code
and ad0s3 for /cfg, as usual, 1GB total. Other space of SSD is dedicated
to ad0s4 where I have ad0s4b (8GB) for crashdump and the rest as ad0s4a for /var/crash.

And ad0s4b is NOT configured as swap. There are 4GB of RAM and no swap here.
More than 3GB of RAM are generally free.

Eugene Grosbein



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