Given the following mount unit, which by itself is started via the SYSTEMD_WANTS in /etc/udev/rules.d/...:
[Unit]
Description=A mount
[Mount]
What=/dev/disk/by-uuid/BBBBBBBB-BBBB-BBBB-BBBB-BBBBBBBBBBBB
Where=/mnt/path
Type=ext4
Options=defaults,ro,noauto,noatime,x-gvfs-hide
[Install]
That BBBBBB... device is a decrypted map.
Need to close it after the mount is stopped, yet the following yields no effect:
ExecStopPost=/usr/sbin/cryptsetup close /dev/disk/by-uuid/BBBBBBBB-BBBB-BBBB-BBBB-BBBBBBBBBBBB
Which is understandable, as the directive is for a systemd's service, not mount units.
With that, what is the right way to run something (close a map in this case) upon a mount unit stop?
