Hi, I am working on a service and a part of this work is investigating a
crash that occurs only when the service program is launched via exec from
the service run script. My initial thought was to inspect the coredump but
none is created although I have verified that both my user and root can
create coredumps.
Are coredumps ever created from crashing services under s6? I have a
feeling that I am missing some s6 paradigm here. Thanks for any help.
- By default, s6 services are started with their cwd set in the
service directory. Check there, you may have a coredump.
- Depending on how and when you start the supervision tree, the run
scripts may not be inheriting the core dump settings that you have when
you log in. A supervision tree will inherit boot time settings, which
may or may not have been modified yet in the boot sequence depending on
when you start s6-svscan, and all the services will start with the
environment they inherit from s6-svscan. Check your boot scripts for
the place where your core dump parameters are set (typically a sysctl
invocation).
Good luck,
--
Laurent
