I've set up a stack of collectd, graphite and grafana on my OMV system. But every time I update it breaks the configuration because it removes the lines to include the .d directory.
This is a pretty standard way to configure everything under Linux in general and Debian in particular.
We would only need to add these lines to the generation of the config file.
Every time there is an update, I have to insert this back into /etc/collectd/collectd.conf so that my other plugins will load.