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[Bug 1545675] [NEW] Shelve/unshelve fails for pinned instance

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Stephen Finucane <stephen.finucane@xxxxxxxxx>
Date: Mon, 15 Feb 2016 11:13:17 -0000
Reply-to: Bug 1545675 <1545675@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

It appears the shelve/unshelve operation does not work when an instance
is pinned. A CPUPinningInvalid exception is raised when one attempts to
do so.

    CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following
pinned set [0, 25]

---

# Steps

Testing was conducted on host containing a single-node, Fedora 23-based
(4.3.5-300.fc23.x86_64) OpenStack instance (built with DevStack). The
'12d224e' commit of Nova was used. The Tempest tests (commit 'e913b82')
were run using modified flavors, as seen below:

    nova flavor-create m1.small_nfv 420 2048 0 2
    nova flavor-create m1.medium_nfv 840 4096 0 4
    nova flavor-key 420 set "hw:numa_nodes=2"
    nova flavor-key 840 set "hw:numa_nodes=2"
    nova flavor-key 420 set "hw:cpu_policy=dedicated"
    nova flavor-key 840 set "hw:cpu_policy=dedicated"

    cd $TEMPEST_DIR
    cp etc/tempest.conf etc/tempest.conf.orig
    sed -i "s/flavor_ref = .*/flavor_ref = 420/" etc/tempest.conf
    sed -i "s/flavor_ref_alt = .*/flavor_ref_alt = 840/" etc/tempest.conf

The following tests were run:

* tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
* tempest.api.compute.servers.test_server_actions.ServerActionsTestJSON.test_shelve_unshelve_server

Like so:

    ./run_tempest.sh --
tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance

# Expected Result

The tests should pass.

# Actual Result

The tests fail. Both failing tests result in similar error messages. The
error messages for both are given below.

{0}
tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
[36.713046s] ... FAILED

 Setting instance vm_state to ERROR
 Traceback (most recent call last):
   File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
     self._delete_instance(context, instance, bdms, quotas)
   File "/opt/stack/nova/nova/hooks.py", line 149, in inner
     rv = f(*args, **kwargs)
   File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
     quotas.rollback()
   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
     self.force_reraise()
   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
     six.reraise(self.type_, self.value, self.tb)
   File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
     self._update_resource_tracker(context, instance)
   File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
     rt.update_usage(context, instance)
   File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
     return f(*args, **kwargs)
   File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
     self._update_usage_from_instance(context, instance)
   File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
     self._update_usage(instance, sign=sign)
   File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
     self.compute_node, usage, free)
   File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
     host_numa_topology, instance_numa_topology, free=free))
   File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
     newcell.unpin_cpus(pinned_cpus)
   File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
     pinned=list(self.pinned_cpus))
 CPUPinningInvalid: Cannot pin/unpin cpus [0] from the following pinned set [1]

{0}
tempest.api.compute.servers.test_server_actions.ServerActionsTestJSON.test_shelve_unshelve_server
[29.131132s] ... ok

 Traceback (most recent call last):
   File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
     self._delete_instance(context, instance, bdms, quotas)
   File "/opt/stack/nova/nova/hooks.py", line 149, in inner
     rv = f(*args, **kwargs)
   File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
     quotas.rollback()
   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
     self.force_reraise()
   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
     six.reraise(self.type_, self.value, self.tb)
   File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
     self._update_resource_tracker(context, instance)
   File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
     rt.update_usage(context, instance)
   File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
     return f(*args, **kwargs)
   File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
     self._update_usage_from_instance(context, instance)
   File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
     self._update_usage(instance, sign=sign)
   File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
     self.compute_node, usage, free)
   File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
     host_numa_topology, instance_numa_topology, free=free))
   File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
     newcell.unpin_cpus(pinned_cpus)
   File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
     pinned=list(self.pinned_cpus))
 CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following pinned set [0, 25]

** Affects: nova
     Importance: Undecided
     Assignee: Stephen Finucane (sfinucan)
         Status: In Progress


** Tags: libvirt numa

** Changed in: nova
       Status: New => In Progress

** Changed in: nova
     Assignee: (unassigned) => Stephen Finucane (sfinucan)

** Description changed:

  It appears the shelve/unshelve operation does not work when an instance
  is pinned. A CPUPinningInvalid exception is raised when one attempts to
  do so.
  
-     CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following
+     CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following
  pinned set [0, 25]
  
  ---
  
  # Steps
  
  Testing was conducted on host containing a single-node, Fedora 23-based
  (4.3.5-300.fc23.x86_64) OpenStack instance (built with DevStack). The
  '12d224e' commit of Nova was used. The Tempest tests (commit 'e913b82')
  were run using modified flavors, as seen below:
  
-     nova flavor-create m1.small_nfv 420 2048 0 2
-     nova flavor-create m1.medium_nfv 840 4096 0 4
-     nova flavor-key 420 set "hw:numa_nodes=2"
-     nova flavor-key 840 set "hw:numa_nodes=2"
-     nova flavor-key 420 set "hw:cpu_policy=dedicated"
-     nova flavor-key 840 set "hw:cpu_policy=dedicated"
+     nova flavor-create m1.small_nfv 420 2048 0 2
+     nova flavor-create m1.medium_nfv 840 4096 0 4
+     nova flavor-key 420 set "hw:numa_nodes=2"
+     nova flavor-key 840 set "hw:numa_nodes=2"
+     nova flavor-key 420 set "hw:cpu_policy=dedicated"
+     nova flavor-key 840 set "hw:cpu_policy=dedicated"
  
-     cd $TEMPEST_DIR
-     cp etc/tempest.conf etc/tempest.conf.orig
-     sed -i "s/flavor_ref = .*/flavor_ref = 420/" etc/tempest.conf
-     sed -i "s/flavor_ref_alt = .*/flavor_ref_alt = 840/" etc/tempest.conf
+     cd $TEMPEST_DIR
+     cp etc/tempest.conf etc/tempest.conf.orig
+     sed -i "s/flavor_ref = .*/flavor_ref = 420/" etc/tempest.conf
+     sed -i "s/flavor_ref_alt = .*/flavor_ref_alt = 840/" etc/tempest.conf
  
  The following tests were run:
  
  * tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
  * tempest.api.compute.servers.test_server_actions.ServerActionsTestJSON.test_shelve_unshelve_server
+ 
+ Like so:
+ 
+     ./run_tempest.sh --
+ tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
  
  # Expected Result
  
  The tests should pass.
  
  # Actual Result
  
  The tests fail. Both failing tests result in similar error messages. The
  error messages for both are given below.
  
  {0}
  tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
  [36.713046s] ... FAILED
  
-  Setting instance vm_state to ERROR
-  Traceback (most recent call last):
-    File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
-      self._delete_instance(context, instance, bdms, quotas)
-    File "/opt/stack/nova/nova/hooks.py", line 149, in inner
-      rv = f(*args, **kwargs)
-    File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
-      quotas.rollback()
-    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
-      self.force_reraise()
-    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
-      six.reraise(self.type_, self.value, self.tb)
-    File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
-      self._update_resource_tracker(context, instance)
-    File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
-      rt.update_usage(context, instance)
-    File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
-      return f(*args, **kwargs)
-    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
-      self._update_usage_from_instance(context, instance)
-    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
-      self._update_usage(instance, sign=sign)
-    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
-      self.compute_node, usage, free)
-    File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
-      host_numa_topology, instance_numa_topology, free=free))
-    File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
-      newcell.unpin_cpus(pinned_cpus)
-    File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
-      pinned=list(self.pinned_cpus))
-  CPUPinningInvalid: Cannot pin/unpin cpus [0] from the following pinned set [1]
+  Setting instance vm_state to ERROR
+  Traceback (most recent call last):
+    File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
+      self._delete_instance(context, instance, bdms, quotas)
+    File "/opt/stack/nova/nova/hooks.py", line 149, in inner
+      rv = f(*args, **kwargs)
+    File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
+      quotas.rollback()
+    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
+      self.force_reraise()
+    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
+      six.reraise(self.type_, self.value, self.tb)
+    File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
+      self._update_resource_tracker(context, instance)
+    File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
+      rt.update_usage(context, instance)
+    File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
+      return f(*args, **kwargs)
+    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
+      self._update_usage_from_instance(context, instance)
+    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
+      self._update_usage(instance, sign=sign)
+    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
+      self.compute_node, usage, free)
+    File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
+      host_numa_topology, instance_numa_topology, free=free))
+    File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
+      newcell.unpin_cpus(pinned_cpus)
+    File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
+      pinned=list(self.pinned_cpus))
+  CPUPinningInvalid: Cannot pin/unpin cpus [0] from the following pinned set [1]
  
  {0}
  tempest.api.compute.servers.test_server_actions.ServerActionsTestJSON.test_shelve_unshelve_server
  [29.131132s] ... ok
  
-  Traceback (most recent call last):
-    File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
-      self._delete_instance(context, instance, bdms, quotas)
-    File "/opt/stack/nova/nova/hooks.py", line 149, in inner
-      rv = f(*args, **kwargs)
-    File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
-      quotas.rollback()
-    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
-      self.force_reraise()
-    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
-      six.reraise(self.type_, self.value, self.tb)
-    File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
-      self._update_resource_tracker(context, instance)
-    File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
-      rt.update_usage(context, instance)
-    File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
-      return f(*args, **kwargs)
-    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
-      self._update_usage_from_instance(context, instance)
-    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
-      self._update_usage(instance, sign=sign)
-    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
-      self.compute_node, usage, free)
-    File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
-      host_numa_topology, instance_numa_topology, free=free))
-    File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
-      newcell.unpin_cpus(pinned_cpus)
-    File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
-      pinned=list(self.pinned_cpus))
-  CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following pinned set [0, 25]
+  Traceback (most recent call last):
+    File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
+      self._delete_instance(context, instance, bdms, quotas)
+    File "/opt/stack/nova/nova/hooks.py", line 149, in inner
+      rv = f(*args, **kwargs)
+    File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
+      quotas.rollback()
+    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
+      self.force_reraise()
+    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
+      six.reraise(self.type_, self.value, self.tb)
+    File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
+      self._update_resource_tracker(context, instance)
+    File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
+      rt.update_usage(context, instance)
+    File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
+      return f(*args, **kwargs)
+    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
+      self._update_usage_from_instance(context, instance)
+    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
+      self._update_usage(instance, sign=sign)
+    File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
+      self.compute_node, usage, free)
+    File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
+      host_numa_topology, instance_numa_topology, free=free))
+    File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
+      newcell.unpin_cpus(pinned_cpus)
+    File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
+      pinned=list(self.pinned_cpus))
+  CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following pinned set [0, 25]

-- 
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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1545675

Title:
  Shelve/unshelve fails for pinned instance

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  It appears the shelve/unshelve operation does not work when an
  instance is pinned. A CPUPinningInvalid exception is raised when one
  attempts to do so.

      CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following
  pinned set [0, 25]

  ---

  # Steps

  Testing was conducted on host containing a single-node, Fedora
  23-based (4.3.5-300.fc23.x86_64) OpenStack instance (built with
  DevStack). The '12d224e' commit of Nova was used. The Tempest tests
  (commit 'e913b82') were run using modified flavors, as seen below:

      nova flavor-create m1.small_nfv 420 2048 0 2
      nova flavor-create m1.medium_nfv 840 4096 0 4
      nova flavor-key 420 set "hw:numa_nodes=2"
      nova flavor-key 840 set "hw:numa_nodes=2"
      nova flavor-key 420 set "hw:cpu_policy=dedicated"
      nova flavor-key 840 set "hw:cpu_policy=dedicated"

      cd $TEMPEST_DIR
      cp etc/tempest.conf etc/tempest.conf.orig
      sed -i "s/flavor_ref = .*/flavor_ref = 420/" etc/tempest.conf
      sed -i "s/flavor_ref_alt = .*/flavor_ref_alt = 840/" etc/tempest.conf

  The following tests were run:

  * tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
  * tempest.api.compute.servers.test_server_actions.ServerActionsTestJSON.test_shelve_unshelve_server

  Like so:

      ./run_tempest.sh --
  tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance

  # Expected Result

  The tests should pass.

  # Actual Result

  The tests fail. Both failing tests result in similar error messages.
  The error messages for both are given below.

  {0}
  tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
  [36.713046s] ... FAILED

   Setting instance vm_state to ERROR
   Traceback (most recent call last):
     File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
       self._delete_instance(context, instance, bdms, quotas)
     File "/opt/stack/nova/nova/hooks.py", line 149, in inner
       rv = f(*args, **kwargs)
     File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
       quotas.rollback()
     File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
       self.force_reraise()
     File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
       six.reraise(self.type_, self.value, self.tb)
     File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
       self._update_resource_tracker(context, instance)
     File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
       rt.update_usage(context, instance)
     File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
       return f(*args, **kwargs)
     File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
       self._update_usage_from_instance(context, instance)
     File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
       self._update_usage(instance, sign=sign)
     File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
       self.compute_node, usage, free)
     File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
       host_numa_topology, instance_numa_topology, free=free))
     File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
       newcell.unpin_cpus(pinned_cpus)
     File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
       pinned=list(self.pinned_cpus))
   CPUPinningInvalid: Cannot pin/unpin cpus [0] from the following pinned set [1]

  {0}
  tempest.api.compute.servers.test_server_actions.ServerActionsTestJSON.test_shelve_unshelve_server
  [29.131132s] ... ok

   Traceback (most recent call last):
     File "/opt/stack/nova/nova/compute/manager.py", line 2474, in do_terminate_instance
       self._delete_instance(context, instance, bdms, quotas)
     File "/opt/stack/nova/nova/hooks.py", line 149, in inner
       rv = f(*args, **kwargs)
     File "/opt/stack/nova/nova/compute/manager.py", line 2437, in _delete_instance
       quotas.rollback()
     File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
       self.force_reraise()
     File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
       six.reraise(self.type_, self.value, self.tb)
     File "/opt/stack/nova/nova/compute/manager.py", line 2432, in _delete_instance
       self._update_resource_tracker(context, instance)
     File "/opt/stack/nova/nova/compute/manager.py", line 751, in _update_resource_tracker
       rt.update_usage(context, instance)
     File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 271, in inner
       return f(*args, **kwargs)
     File "/opt/stack/nova/nova/compute/resource_tracker.py", line 376, in update_usage
       self._update_usage_from_instance(context, instance)
     File "/opt/stack/nova/nova/compute/resource_tracker.py", line 863, in _update_usage_from_instance
       self._update_usage(instance, sign=sign)
     File "/opt/stack/nova/nova/compute/resource_tracker.py", line 705, in _update_usage
       self.compute_node, usage, free)
     File "/opt/stack/nova/nova/virt/hardware.py", line 1441, in get_host_numa_usage_from_instance
       host_numa_topology, instance_numa_topology, free=free))
     File "/opt/stack/nova/nova/virt/hardware.py", line 1307, in numa_usage_from_instances
       newcell.unpin_cpus(pinned_cpus)
     File "/opt/stack/nova/nova/objects/numa.py", line 93, in unpin_cpus
       pinned=list(self.pinned_cpus))
   CPUPinningInvalid: Cannot pin/unpin cpus [1] from the following pinned set [0, 25]

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Follow ups

[Bug 1545675] Re: Resizing a pinned VM results in inconsistent state
From: Stephen Finucane, 2016-09-02
[Bug 1545675] Re: Resizing a pinned VM results in inconsistent state
From: Matt Riedemann, 2016-08-03
[Bug 1545675] Re: Resizing a pinned VM results in inconsistent state
From: OpenStack Infra, 2016-03-07