I see what you mean. Also, I'm not entirely happy with this necessary `notify => Cs_shadow` but I don't see another way to fix it. I've made several attempts at trying to implement an "autonotify" similar to the currently existing autorequire, but didn't succeed in doing so. However, if that could be made to work it would be backwards compatible in this sense.

Currently I did document how to use it in the PR (https://github.com/puppetlabs/puppetlabs-corosync/pull/47), this would be better suited in the code/README.md I agree, a small fix but currently I can't make time for this, my employer's time is valuable too ;-)