Hi Markus,
See here: https://docs.bareos.org/Appendix/Debugging.html
> By default, *btraceback* uses *bsmtp* to send the traceback via
email. Therefore it expects a local mail transfer daemon running. It
send the traceback to root@localhost <mailto:root%40localhost> via
*localhost*.
The last line of our btraceback script is:
$ cat /usr/sbin/btraceback
...
cat ${WD}/bareos.$2.traceback | \
/usr/sbin/bsmtp -h localhost -f root -s "Bareos ${DEBUGGER} traceback of
${PNAME}" root
Feel free to replace that mail address with one of your choice, or
change the bsmtp to a different delivery method of your choosing.
It would be really helpful if we could get a copy of the traceback!
Kind Regards
Sebastian Sura
Am 11.09.25 um 10:57 schrieb Bruno Friedmann (bruno-at-bareos):
It's probably related to memory exhaust in the docker itself.
For the backtrace, if you can setup the mailing then the backtrace
might be sent out of the docker when the crash occur.
On Monday, 8 September 2025 at 19:48:31 UTC+2 Markus Dubois wrote:
after a long full backup run (16 TB), i got this on client side:
____
*** stack smashing detected ***: terminated
BAREOS interrupted by signal 6: IOT trap
bareos-fd, omvserver got signal 6 - IOT trap. Attempting traceback.
exepath=/usr/sbin/
Calling: /usr/sbin/btraceback /usr/sbin/bareos-fd 10 /var/lib/bareos
It looks like the traceback worked...
Dumping: /var/lib/bareos/omvserver.10.bactrace
___
unfortunately it´s a docker container in docker swarm, so i cannot
access the trace file (at least i do not know how)
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