I guess this shouldn't be a problem in queens because the resource tracker didn't use that provider tree to report back the inventory changes:
https://github.com/openstack/nova/blob/stable/queens/nova/compute/resource_tracker.py#L883 That was done in Rocky: https://review.openstack.org/#/c/520246/ ** No longer affects: nova/queens ** Changed in: nova/rocky Importance: Undecided => High -- 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/1799727 Title: CPU_Allocation_Ratio from nova.conf doesn't update exisiting providers Status in OpenStack Compute (nova): Confirmed Status in OpenStack Compute (nova) rocky series: Confirmed Bug description: (OpenStack 14) After changing the value of cpu_allocation_ratio in nova.conf from 16 to 1 and restarting nova containers, the ProviderTree still uses the old value (A patch with extra debugging is applied to the system for ProviderTree information: https://review.openstack.org/#/c/597560/ ) Nova.conf setting: cpu_allocation_ratio=1 [root@compute-0 ~]# docker restart nova_compute nova_libvirt nova_compute nova_libvirt Inside Nova-compute.log 2018-10-23 19:19:49.217 1 DEBUG oslo_service.service [req- 9539f623-b342-4c5d-ab93-6ffacdbd8358 - - - - -] cpu_allocation_ratio = 1.0 log_opt_values /usr/lib/python2.7/site- packages/oslo_config/cfg.py:3023 2018-10-23 19:19:51.990 1 DEBUG nova.scheduler.client.report [req-9490c7f4-2157-44ef-a81c-ea3e6bf9be21 - - - - -] Updating ProviderTree inventory for provider ca60934d-074d-4628-ae61-3c3bbc9e5543 from _refresh_and_get_inventory using data: {u'VCPU': {u'allocation_ratio': 16.0, u'total': 6, u'reserved': 0, u'step_size': 1, u'min_unit': 1, u'max_unit': 6}, u'MEMORY_MB': {u'allocation_ratio': 1.0, u'total': 6143, u'reserved': 4096, u'step_size': 1, u'min_unit': 1, u'max_unit': 6143}, u'DISK_GB': {u'allocation_ratio': 1.0, u'total': 19, u'reserved': 0, u'step_size': 1, u'min_unit': 1, u'max_unit': 19}} _refresh_and_get_inventory /usr/lib/python2.7/site-packages/nova/scheduler/client/report.py:754 2018-10-23 19:19:51.990 1 DEBUG nova.compute.provider_tree [req-9490c7f4-2157-44ef-a81c-ea3e6bf9be21 - - - - -] Updating inventory in ProviderTree for provider ca60934d-074d-4628-ae61-3c3bbc9e5543 with inventory: {u'VCPU': {u'allocation_ratio': 16.0, u'total': 6, u'reserved': 0, u'step_size': 1, u'min_unit': 1, u'max_unit': 6}, u'MEMORY_MB': {u'allocation_ratio': 1.0, u'total': 6143, u'reserved': 4096, u'step_size': 1, u'min_unit': 1, u'max_unit': 6143}, u'DISK_GB': {u'allocation_ratio': 1.0, u'total': 19, u'reserved': 0, u'step_size': 1, u'min_unit': 1, u'max_unit': 19}} update_inventory /usr/lib/python2.7/site-packages/nova/compute/provider_tree.py:172 To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1799727/+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

