To be clear, the `collectd_key` method in the helper of the `collectd` cookbook
```ruby
def collectd_key(option)
  return option.to_s.split('_').map{|x| x.capitalize}.join() if option.instance_of?(Symbol)
  "#{option}"
end
```
just capitalizes the Symbol and hence returns `Fstype` instead of `FSType`. It makes sense. So let's leave it the way you have.