Add missed accel_uuids for _poll_shelved_instances

In [1], we are supporting shelve/unshelve the instance with accelerators
bonded, but we missed to deal the interval for polling shelved instances
to offload periodic task, so we should add the 'accel_uuids' support
in _poll_shelved_instances() periodic task.

[1]https://review.opendev.org/c/openstack/nova/+/729563/

Co-Authored-By: Wenping Song <[email protected]>

Closes-Bug: #1917592

Change-Id: I2ba69d0d727cc183f4a5dc52eaf4000962caeb4a

Author: 1049965823

nova/compute/manager.py

@@ -9478,12 +9478,20 @@ def _poll_shelved_instances(self, context):
             if timeutils.is_older_than(shelved_at, CONF.shelved_offload_time):
                 to_gc.append(instance)
 
+        cyclient = cyborg.get_client(context)
         for instance in to_gc:
             try:
                 instance.task_state = task_states.SHELVING_OFFLOADING
                 instance.save(expected_task_state=(None,))
-                self.shelve_offload_instance(context, instance,
-                                             clean_shutdown=False)
+                accel_uuids = []
+                if instance.flavor.extra_specs.get('accel:device_profile'):
+                    # TODO(brinzhang): After cyborg support batch query ARQs
+                    # for more than one instances, we will improve efficiency
+                    # with this implemention.
+                    accel_uuids = cyclient.get_arq_uuids_for_instance(instance)
+                self.shelve_offload_instance(
+                    context, instance, clean_shutdown=False,
+                    accel_uuids=accel_uuids)
             except Exception:
                 LOG.exception('Periodic task failed to offload instance.',
                               instance=instance)

nova/tests/unit/compute/test_shelve.py

@@ -762,6 +762,34 @@ def fake_soi(context, instance, **kwargs):
             self.assertTrue(soi.called)
             self.assertEqual([instance2.uuid], data)
 
+    @mock.patch('nova.accelerator.cyborg._CyborgClient.'
+                'get_arq_uuids_for_instance')
+    @mock.patch('oslo_utils.timeutils.is_older_than')
+    @mock.patch('oslo_utils.timeutils.parse_strtime')
+    def test_shelved_poll_with_accel_uuids(self, mock_parse, mock_older,
+                                           mock_get_arq_uuids):
+        self.flags(shelved_offload_time=1)
+        mock_older.return_value = True
+        instance = self._create_fake_instance_obj()
+        instance.task_state = None
+        instance.vm_state = vm_states.SHELVED
+        instance.host = self.compute.host
+        instance.system_metadata = {'shelved_at': ''}
+        instance.flavor.extra_specs['accel:device_profile'] = 'dp_test'
+        mock_get_arq_uuids.return_value = [uuids.fake]
+        instance.save()
+
+        data = []
+
+        def fake_soi(context, instance, **kwargs):
+            data.append(instance.uuid)
+
+        with mock.patch.object(self.compute, 'shelve_offload_instance') as soi:
+            soi.side_effect = fake_soi
+            self.compute._poll_shelved_instances(self.context)
+            self.assertTrue(soi.called)
+            self.assertEqual([instance.uuid], data)
+
     @mock.patch('oslo_utils.timeutils.is_older_than')
     @mock.patch('oslo_utils.timeutils.parse_strtime')
     def test_shelved_poll_checks_task_state_on_save(self, mock_parse,