Comment 5 for bug 1723155

In a lab deployment, I've got the same problem. I think it's related with ceph/cinder/glance. As result, my only lab hypervisor has "free_disk_gb = 0" (which is an error and should get ceph volume available disk) and it cannot deploy any instance:

$ openstack hypervisor stats show
+----------------------+-------+
| Field | Value |
+----------------------+-------+
| count | 1 |
| current_workload | 0 |
| disk_available_least | 0 |
| free_disk_gb | 0 |
| free_ram_mb | 9487 |
| local_gb | 0 |
| local_gb_used | 0 |
| memory_mb | 9999 |
| memory_mb_used | 512 |
| running_vms | 0 |
| vcpus | 6 |
| vcpus_used | 0 |
+----------------------+-------+