Bug#851402: failed unmounting /var during shutdown

[Daniel Pocock]

Package: systemd
Version: 232-8
Severity: important


The box is running stretch, updated from jessie yesterday.

When the box shuts down, it unmounts all the filesystems.

When it gets to /var there is a warning: Failed unmounting /var


I wrote a little wrapper script to put in place of /bin/umount, it calls
lsof to show what is going on before the real umount call

The only open files on /var at the time of unmounting appear to be
journalctl files

Is this expected?  Is some manual configuration needed to make sure /var
is unmounted later or should systemd / journald behave better in this
situation?