Resource tracking does not take into account the current resources on the host

[Gary Kotton]

The trace below is from the log file:

2013-10-21 04:28:27.210 INFO nova.compute.resource_tracker [-] Hypervisor: free disk (GB): 11
2013-10-21 04:28:27.263 AUDIT nova.compute.resource_tracker [-] Free ram (MB): 4898
2013-10-21 04:28:27.263 AUDIT nova.compute.resource_tracker [-] Free disk (GB): 15
2013-10-21 04:28:27.263 AUDIT nova.compute.resource_tracker [-] Free VCPUS: 4

In this specific case there is 4GB used on the hypervisor - used for image cache etc.

+----------------------+-----------------------------------------------------------------------------------------------------------------------------+
| Property | Value |
+----------------------+-----------------------------------------------------------------------------------------------------------------------------+
| hypervisor_hostname | domain-c7(Cluster31) |
| cpu_info | {"model": ["Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz"], "vendor": ["VMware, Inc."], "topology": {"cores": 4, "threads": 4}} |
| free_disk_gb | 15 |
| hypervisor_version | 51 |
| disk_available_least | None |
| local_gb | 15 |
| free_ram_mb | 4898 |
| id | 1 |
| vcpus_used | 0 |
| hypervisor_type | VMware vCenter Server |
| local_gb_used | 0 |
| memory_mb_used | 512 |
| memory_mb | 5410 |
| current_workload | 0 |
| vcpus | 4 |
| running_vms | 0 |
| service_id | 5 |
| service_host | os-devstack |
+----------------------+-----------------------------------------------------------------------------------------------------------------------------+

[Gary Kotton (garyk)]

https://review.openstack.org/52900