nova-compute.log display incorrect information for CPUPinningUnknown.

[Charlotte Han]

Description
===========
When nova-compute occured CPUPinningUnknown exception, the information of nova-compute.log is wrong.

Steps to reproduce
==================
* I did create 6 instances with numa topology.
  [root@ctrl3 ~]# virsh list
 Id Name State
----------------------------------------------------
 1 instance-00000002 running
 2 instance-00000006 running
 3 instance-0000000a running
 4 instance-00000008 running
 5 instance-0000000c running
 6 instance-00000004 running

[root@ctrl3 ~]# virsh vcpupin 1
VCPU: CPU Affinity
----------------------------------
   0: 28

[root@ctrl3 ~]# virsh vcpupin 2
VCPU: CPU Affinity
----------------------------------
   0: 2

[root@ctrl3 ~]# virsh vcpupin 3
VCPU: CPU Affinity
----------------------------------
   0: 44

[root@ctrl3 ~]# virsh vcpupin 4
VCPU: CPU Affinity
----------------------------------
   0: 0

[root@ctrl3 ~]# virsh vcpupin 5
VCPU: CPU Affinity
----------------------------------
   0: 16

[root@ctrl3 ~]# virsh vcpupin 6
VCPU: CPU Affinity
----------------------------------
   0: 18

* then I did modify section vcpu_pin_set in nova.conf.
   [root@ctrl3 ~]# cat /etc/nova/nova.conf | grep vcpu_pin_set
    vcpu_pin_set = "0-47,^18"

* then I did restart openstack-nova-compute service
   Log display "Error updating resources for node ctrl3.: CPUPinningUnknown: CPU set to pin [18] must be a subset of known CPU set [28]".
   But this information is wrong, known CPU set is not only [28], it should be [0, 2, 4, 6, 8, 10, 12, 14, 16, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46]

Expected result
===============
CPUPinningUnknown: CPU set to pin [18] must be a subset of known CPU set [0, 2, 4, 6, 8, 10, 12, 14, 16, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46]

Actual result
=============
 CPUPinningUnknown: CPU set to pin [18] must be a subset of known CPU set [28]

Environment
===========
1. Exact version of OpenStack you are running. See the following
  Pike version

2. Which hypervisor did you use?
  Libvirt + KVM

Logs & Configs
==============
/lockutils.py:282
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager [req-8835b3d7-a453-4f91-abfa-5ccd0c54693b - - - - -] Error updating resources for node ctrl3.: CPUPinningUnknown: CPU set to pin [18] must be a subset of known CPU set [28]
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager Traceback (most recent call last):
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 6647, in update_available_resource_for_node
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager rt.update_available_resource(context, nodename)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/compute/resource_tracker.py", line 657, in update_available_resource
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager self._update_available_resource(context, resources)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager return f(*args, **kwargs)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/compute/resource_tracker.py", line 698, in _update_available_resource
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager self._update_usage_from_instances(context, instances, nodename)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/compute/resource_tracker.py", line 1141, in _update_usage_from_instances
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager has_ocata_computes=has_ocata_computes)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/compute/resource_tracker.py", line 1077, in _update_usage_from_instance
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager sign=sign)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/compute/resource_tracker.py", line 875, in _update_usage
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager cn, usage, free)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/virt/hardware.py", line 1784, in get_host_numa_usage_from_instance
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager host_numa_topology, instance_numa_topology, free=free))
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/virt/hardware.py", line 1640, in numa_usage_from_instances
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager newcell.pin_cpus(pinned_cpus)
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager File "/usr/lib/python2.7/site-packages/nova/objects/numa.py", line 82, in pin_cpus
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager cpuset=list(self.pinned_cpus))
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager CPUPinningUnknown: CPU set to pin [18] must be a subset of known CPU set [28]
2017-11-03 14:44:01.425 32568 ERROR nova.compute.manager

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/517592

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/pike
Review: https://review.openstack.org/523644

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/517592
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=ecf12a4dd132e4aa9c2e3563a41acc0ab6d13978
Submitter: Zuul
Branch: master

commit ecf12a4dd132e4aa9c2e3563a41acc0ab6d13978
Author: zte-hanrong <email address hidden>
Date: Thu Nov 2 16:09:26 2017 +0800

    Fix incorrect known vcpuset when CPUPinningUnknown raised

    When exception.CPUPinningUnknown or exception.CPUUnPinningUnknown
    is raised, the value of known vcpuset is NUMACell's pinned_cpus,
    it should be NUMACell's cpuset.

    Close-Bug: #1729784
    Change-Id: I1902dc40623af62fd83fac222099f664d7d19ed9

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/523644
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=ae56863746cdd69e27f2e046a81f581541508168
Submitter: Zuul
Branch: stable/pike

commit ae56863746cdd69e27f2e046a81f581541508168
Author: zte-hanrong <email address hidden>
Date: Thu Nov 2 16:09:26 2017 +0800

    Fix incorrect known vcpuset when CPUPinningUnknown raised

    When exception.CPUPinningUnknown or exception.CPUUnPinningUnknown
    is raised, the value of known vcpuset is NUMACell's pinned_cpus,
    it should be NUMACell's cpuset.

    Close-Bug: #1729784
    Change-Id: I1902dc40623af62fd83fac222099f664d7d19ed9
    (cherry picked from commit ecf12a4dd132e4aa9c2e3563a41acc0ab6d13978)