On 15 Feb 2012, at 16:52, Martin Simmons wrote:
>>>>>> On Wed, 15 Feb 2012 13:31:10 +0000 (GMT), Joe Nyland said:
>>
>> On 14 Feb, 2012,at 03:47 PM, Martin Simmons <mar...@lispworks.com> wrote:
>>
>>>>>>>> On Tue, 14 Feb 2012 10:34:31 -0500, John Drescher said:
>>>>
>>>>> I've been running the SD using the following command (I know the
>>>>> combination
>>>>> of options I have used may be excessive, but I wanted as much chance of
>>>>> catching the error as I could!) since yesterday afternoon:
>>>>> sudo bacula-sd -c /etc/bacula/bacula-sd.conf -d 100 -dt -f -u bacula -g
>>>>> tape -m -v | tee -a /mnt/array/bacula-sd.screen.log
>>>>>
>>>>> However, (as luck would have it) I've not seen the behaviour I originally
>>>>> reported whilst running with debug options.
>>>>>
>>>>> Is there any way in which running the SD with the combination of options I
>>>>> have used above, could cause any different behaviour of the SD? Or
>>>>> interfere
>>>>> in any way with it? I'm asking, becuase I have re-enabled all of the
>>>>> backups
>>>>> jobs I have on the server, and I have still not seen it crash again.
>>>>>
>>>>
>>>> Could be a timing issue that the delay in writing the log causes the
>>>> bad behavior to not happen.. Those types of problems are hard to
>>>> debug.
>>>
>>> Running it under gdb without the debug options is better approach in that
>>> case.
>>>
>>> http://www.bacula.org/5.2.x-manuals/en/problems/problems/What_Do_When_Bacula.html#SECTION00640000000000000000
>>>
>>> When it 'crashes' (though it sounds more like 'hangs' is a better word),
>>> interrupt gdb with Ctrl-c to get back to the gdb shell window (as in step
>>> 8).
>>>
>>> __Martin
>>>
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>>
>>
>> Martin and John, thank you for your replies.
>>
>> I since yesterday afternoon, bacula-sd has been running under gdb using the
>> instructions in the manual for my Bacula version, however I've still not
>> seen the issue originally reported.
>>
>> I agree with you both that by running it under a debugging process, it seems
>> a delay is introduced which is suppressing the error in some way. Is my best
>> bet just to leave bacula-sd running under gdb and hope that my full backups
>> over the weekend may highlight the issue? Or is there another way I could
>> debug this?
>
> Assuming the error causes the SD to hang (rather than exit), then you could
> run it without gdb and then attach gdb to it when it hangs (use gdb -p $pid).
>
> __Martin
>
> ------------------------------------------------------------------------------
> Virtualization & Cloud Management Using Capacity Planning
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Ok, that sounds reasonable.
One question, does bacula-sd need to be running with "-s no
signals (for debugging)" or will gdb be able to provide enough info without
this option? (My default options on Ubuntu 10.04 are: -c <config file> -u
<user> -g <group>)
Would using the -s option introduce the sort of delay we mentioned earlier, and
thus limit my changes of reproducing the issue?
Thank you for your continued help.
Joe
------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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