I have collectd running the tail plugin and writing data out using the write_graphite plugin (via carbon). This seems to work. If I then change the tail plugin config (e.g. change the Regex or DSType), and restart collectd, graphite stops showing me anything at all.
What this really boils down to is, once I update collectd's config, what do I need to restart/change to make graphite pick up the new data?