Comment 4 for bug 1781255

o/ Alan /anyone else do you have a pointer to logs /job where this was failing please or was it from local setup?

The review at https://review.openstack.org/583547 is at least related and imo necessary anyway, since it updates the ceph releases to include luminous which is missing. However it would be nice to confirm that it fixes the bug since we have closes-bug on it.