Open Stack

Hi All,

Just started experimenting with RBD (ceph) back end for ephemeral
storage on some of my compute nodes.

I have it launching instances just fine, but when I try and delete
them libvirt shows the instances are gone, but OpensStack lists them
in 'deleting' state and the rbd process on the hypervisor spins madly
at about 300% cpu ...

...and now approx 18min later they have finally fully terminated, why so long?

-Jon