On 2019-05-17 10:14 a.m., Axel Burri wrote:

> 
> Nevertheless I played around with it and it seems to work, I'll keep it
> in mind for the future.
> 


fi du was not implemented last time I had to do this, so I had
completely forgotten about it.  It makes much more sense to just use
that for the Excluisve disk usage of a single subvolume.

However, Qgroups does allow you to group multiple subvolumes,, so, for
example, you build a query to find out how much disk space is used
exclusively by the 10 oldest snapshots, which I find to be a more useful
question..