# journalctl |grep -c 'Processing coredump'
2
# coredumpctl --no-legend | wc -l
2
# ls /var/lib/systemd/coredump/ | wc -l
12
So on the coredumpctl, after
It's worth noting that different restrictions apply to data saved
in the journal and core dump files saved in
/var/lib/systemd/coredump, see overview in systemd-coredump(8).
Thus it may very well happen that a particular core dump is still
listed in the journal while its corresponding core dump file has
already been removed.
it should also say
And it also might very well happen that a particular core dump is not
listed in the journal while its corresponding core dump file
is still indeed sitting in /var/lib/systemd/coredump.
That is because you didn't enable persistent logging in
journald. See /usr/share/doc/systemd/README.Debian.gz , and
in the meantime use ls(1) to see the coredumps made before
the last boot.
