Generating coredumps used to work fine, but after switching over to systemd, I only see the messageAborted (core dumped)but no core file is generated. Has it something to do with systemd?(Background: My original question can be found here. Thanks schaiba for finding the solution. I provide this Q&A, so others can find the solution easier if they already know that it is a systemd issue.)
No more coredumps after migrating to systemd
systemd;core dump
The /proc/sys/ kernel settings are manged by sysctl(8), the system defaults live in /usr/lib/sysctl.d/, overridden by /etc/sysctl.conf or /etc/sysctl.d/. They define the name of the core files and such. Not their writing (unless the kernel is configured to allow core dumps from SUID binaries). The writing is controlled by ulimit(1), i.e., ulimit -c unlimited gives no limits. Under systemd(1) core files generated by stuff under its control are written to the journal, can be retrieved by coredumpctl(1). Normal user stuff is unchanged.systemd's systemd-sysctl.service just runs sysctl at the proper point of boot, and handles rerunning on changes.