Open Stack

I've been doing a lot of instance creation/deletion/evacuate and I've 
noticed that if I

1)create an instance
2) power off the compute node it was running on
3) delete the instance
4) boot up the compute node

then the instance rootfs stays around in /var/lib/nova/instances/. 
Eventually this could add up to significant amounts of space.


Is this expected behaviour?  (This is on grizzly, so maybe havana is 
different.)  If not, should I file a bug for it?

I think it would make sense for the compute node to come up, query all 
the instances in /var/lib/nova/instances/, and delete the ones for 
instances that aren't in the database.

Chris