This is expected behavior. The ironic driver does not report free disk, RAM and memory via the 'get_available_resource' driver API [1] which means the resource tracker is essentially subtracting usage from 0. That's considered okay though [2].
In general, the 'os-hypervisors' API, which the 'nova hypervisor-show' command uses, is considered very broken and will likely be removed in a future release. You should rely on placement for an authoritative view on resource consumption. [1] https://github.com/openstack/nova/blob/e0f088c95d05e9cf32d4af4c7cfc20566b17f8e1/nova/virt/ironic/driver.py#L355-L357 [2] https://github.com/openstack/nova/blob/e0f088c95d05e9cf32d4af4c7cfc20566b17f8e1/nova/compute/resource_tracker.py#L1255 ** Changed in: nova Status: New => Won't Fix -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1894771 Title: Hypervisor shows negative numbers after launching instances on baremetal nodes Status in OpenStack Compute (nova): Won't Fix Bug description: Testing with Train version with ironic driver. Before launching instances on baremetal nodes, # nova hypervisor-show <uuid> command shows 0 for vcpus, memory and disk fields, which are set to zero in ironic.driver code. This is still acceptable as baremetal resources are counted in resource class, however, after launching instance on the baremetal node, the vcpu/mem/disk fields appear to be negative in hypervisor-show details, and the negative numbers correlate with the flavor's vcpu/mem/disk fields. [root@train ~(keystone_admin)]# nova hypervisor-show e12c91fb-4c73-406f-8b9e-b0ef3c9c829a +-------------------------+--------------------------------------+ | Property | Value | +-------------------------+--------------------------------------+ | cpu_info | {} | | current_workload | 0 | | disk_available_least | 0 | | free_disk_gb | -100 | | free_ram_mb | -16384 | | host_ip | 192.168.10.111 | | hypervisor_hostname | e12c91fb-4c73-406f-8b9e-b0ef3c9c829a | | hypervisor_type | ironic | | hypervisor_version | 1 | | id | e12c91fb-4c73-406f-8b9e-b0ef3c9c829a | | local_gb | 0 | | local_gb_used | 100 | | memory_mb | 0 | | memory_mb_used | 16384 | | running_vms | 1 | | service_disabled_reason | None | | service_host | train.ironic | | service_id | 23464515-e938-47b1-807e-fb0e3d8250e3 | | state | up | | status | enabled | | vcpus | 0 | | vcpus_used | 8 | +-------------------------+--------------------------------------+ The hypervisor detail does not affect the functions of baremetal instances, but is quite confusing. Besides, nova quotas and usages are also affected by the baremetal flavor's vcpu/mem/disk fields, which maybe not able to describe the resources that the instance occupies. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1894771/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
