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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

This is invalid since Pike when we dropped using quota usages and
reservations tables:

https://specs.openstack.org/openstack/nova-specs/specs/pike/implemented
/cells-count-resources-to-check-quota-in-api.html

** Changed in: nova
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1595369

Title:
  no spacing configuration for schedule _expire_reservations

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  Description
  ===========
  in schedule/manager.py
  The task _expire_reservations did not have a control for the schedule time.
  The default would be 60s.
  And we need a parameter to disable the task or to control the interval time for schedules.

  
  Steps to reproduce
  ==================
  In the latest source code:

      @periodic_task.periodic_task
      def _expire_reservations(self, context):
          QUOTAS.expire(context)

      @periodic_task.periodic_task(spacing=CONF.scheduler_driver_task_period,
                                   run_immediately=True)
      def _run_periodic_tasks(self, context):
          self.driver.run_periodic_tasks(context)

  
  Expected result
  ===============
  we need to control the time for the schedule of _expire_reservations

  Actual result
  =============
  The schedule run as 60s per time. And even if we set the parameter scheduler_driver_task_period to 60000, it would still run every time.

  Environment
  ===========
  1. Exact version of OpenStack you are running. See the following
    list for all releases: http://docs.openstack.org/releases/

     If this is from a distro please provide
  dpkg -l | grep nova
  ii  nova-api                            2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - API frontend
  ii  nova-cert                           2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - certificate management
  ii  nova-common                         2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - common files
  ii  nova-compute                        2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - compute node base
  ii  nova-compute-kvm                    2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - compute node (KVM)
  ii  nova-compute-libvirt                2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - compute node libvirt support
  ii  nova-conductor                      2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - conductor service
  ii  nova-consoleauth                    2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - Console Authenticator
  ii  nova-novncproxy                     2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - NoVNC proxy
  ii  nova-scheduler                      2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute - virtual machine scheduler
  ii  python-nova                         2:12.0.3-0ubuntu1~cloud0              all          OpenStack Compute Python libraries
  ii  python-novaclient                   2:2.30.1-1~cloud0                     all          client library for OpenStack Compute API

  2. Which hypervisor did you use?
  KVM

  2. Which storage type did you use?
  LVM

  3. Which networking type did you use?
  Neutron with OpenVSwitch

  Logs & Configs
  ==============
  2016-06-23 10:35:01.714 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._expire_reservations run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
  2016-06-23 10:35:12.427 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._run_periodic_tasks run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
  2016-06-23 10:36:01.715 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._expire_reservations run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
  2016-06-23 10:36:12.428 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._run_periodic_tasks run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
  2016-06-23 10:37:01.715 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._expire_reservations run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
  2016-06-23 10:37:14.419 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._run_periodic_tasks run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
  2016-06-23 10:38:02.714 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._expire_reservations run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213
  2016-06-23 10:38:14.419 112316 DEBUG oslo_service.periodic_task [req-0167a2d5-0dd2-44e7-82b6-8907dc0b4c0b - - - - -] Running periodic task SchedulerManager._run_periodic_tasks run_periodic_tasks /usr/lib/python2.7/dist-packages/oslo_service/periodic_task.py:213

  Thanks.

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