How to get rid of "File descriptor ... leaked on lvm invocation" message

When stopping a service you may see a message as follows

b3 ~ # /etc/init.d/apache2 stop
 * Caching service dependencies ...
File descriptor 3 (pipe:[504703]) leaked on lvm invocation. Parent PID 23467: /bin/sh
  /run/lvm/lvmetad.socket: connect failed: No such file or directory
 WARNING: Failed to connect to lvmetad. Falling back to internal scanning.                                  [ ok ]
 * Stopping apache2 ...

This is due to a new feature in LVM that is switched on by default. To disable it, edit /etc/lvm/lvm.conf and set:

use_lvmetad = 0

Now how simple was that?