bird6 crashing when restarting pipes

Arnold Nipper arnold at nipper.de
Thu Mar 4 01:53:58 CET 2010


On 03.03.2010 22:46 Ondrej Zajicek wrote

> On Wed, Mar 03, 2010 at 03:48:13PM +0100, Stefan Jakob wrote:
>> Hi Ondrej,
>> 
>> Am 02.03.2010 08:09, schrieb Ondrej Zajicek:
>> > Hmm, we don't have any such bugreports. I would suggest to run
>> > bird/bird6 with enabled core dumps (ulimit -c unlimited) and
>> > non-stripped (with debug symbols, stripping is done by
>> > 'make install', just copy the binary after 'make', non-stripped
>> > binary ~ 1 MB, stripped ~ 300 kB). In the case of a crash,
>> > if you send me the core dump and the bird binary, it usually
>> > allows to locate and fix the problem.
>> 
>> Where will the dumps be stored?
> 
> It depends on OS and its configuration, usually in the current working
> directory of the dumped process.
> 
>> Is there anything else to do to activate
>> core dumps than setting a core dump size?
> 
> This should be enough. The ulimit is process-specific (and it is
> inherited from the parent) and therefore should be set for BIRD in
> bird starting scripts.
> 
> If you have some testing environment, you could try to send signal
> SIGABRT (kill -ABRT) to the BIRD to test it (this would lead to
> abort and core dump).
> 
>> Currently I limited the dump size to:
>> 
>> core file size          (blocks, -c) 10000
>> 
>> Since our daemon is consuming about 4,8GB of RAM I don't want to set
>> unlimited core dump size.
>>
>> Do you thing that is sufficient?
> 
> I think that it is not enough, because the most important info (the
> stack) is at the end of the address space and i think that the system in
> that case would store the first 10000 blocks. Therefore, i would expect
> that it is needed to have the full core dump.
> 
> BTW, on what OS (Linux or some BSD) are you running BIRD?
> 

Debian Lenny 2.6.30-bpo.2-amd64


Best regards,
Arnold
-- 
Arnold Nipper / nIPper consulting, Sandhausen, Germany
email: arnold at nipper.de       phone: +49 6224 9259 299
mobile: +49 172 2650958         fax: +49 6224 9259 333

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