Add regression test for BFV+IsolatedHostsFilter failure

Creating a volume-backed server while using the IsolatedHostsFilter
results in a NoValidHost failure because the filter tries to load
the RequestSpec.image.id but when you create a server from a volume,
an image is not required directly in the server create request.

Change-Id: Id21e0afa5cec401555bee679193c256e55be863b
Related-Bug: #1746483
(cherry picked from commit 4f9667b7a92ffef4329380e39c64cf314203b06e)

1 files changed, 98 insertions, 0 deletions

diff --git a/nova/tests/functional/regressions/test_bug_1746483.py b/nova/tests/functional/regressions/test_bug_1746483.py
new file mode 100644
index 0000000000..9e55030f31
--- /dev/null
+++ b/nova/tests/functional/regressions/test_bug_1746483.py
@@ -0,0 +1,98 @@
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from nova import config
+from nova import test
+from nova.tests import fixtures as nova_fixtures
+from nova.tests.functional import integrated_helpers
+from nova.tests.unit.image import fake as image_fakes
+from nova.tests.unit import policy_fixture
+from nova import utils
+from nova.virt import fake
+
+CONF = config.CONF
+
+
+class TestBootFromVolumeIsolatedHostsFilter(
+        test.TestCase, integrated_helpers.InstanceHelperMixin):
+    """Regression test for bug #1746483
+
+    The IsolatedHostsFilter checks for images restricted to certain hosts via
+    config options. When creating a server from a root volume, the image is
+    in the volume (and it's related metadata from Cinder). When creating a
+    volume-backed server, the imageRef is not required.
+
+    The regression is that the RequestSpec.image.id field is not set and the
+    IsolatedHostsFilter blows up trying to load the image id.
+    """
+    def setUp(self):
+        super(TestBootFromVolumeIsolatedHostsFilter, self).setUp()
+
+        self.useFixture(policy_fixture.RealPolicyFixture())
+        self.useFixture(nova_fixtures.NeutronFixture(self))
+        self.useFixture(nova_fixtures.CinderFixtureNewAttachFlow(self))
+        self.useFixture(nova_fixtures.PlacementFixture())
+
+        api_fixture = self.useFixture(nova_fixtures.OSAPIFixture(
+            api_version='v2.1'))
+
+        self.api = api_fixture.admin_api
+
+        image_fakes.stub_out_image_service(self)
+        self.addCleanup(image_fakes.FakeImageService_reset)
+
+        self.start_service('conductor')
+
+        # Add the IsolatedHostsFilter to the list of enabled filters since it
+        # is not enabled by default.
+        enabled_filters = CONF.filter_scheduler.enabled_filters
+        enabled_filters.append('IsolatedHostsFilter')
+        self.flags(
+            enabled_filters=enabled_filters,
+            isolated_images=[image_fakes.AUTO_DISK_CONFIG_ENABLED_IMAGE_UUID],
+            isolated_hosts=['host1'],
+            restrict_isolated_hosts_to_isolated_images=True,
+            group='filter_scheduler')
+        self.start_service('scheduler')
+
+        # Create two compute nodes/services so we can restrict the image
+        # we'll use to one of the hosts.
+        for host in ('host1', 'host2'):
+            fake.set_nodes([host])
+            self.addCleanup(fake.restore_nodes)
+            self.start_service('compute', host=host)
+
+    def test_boot_from_volume_with_isolated_image(self):
+        # Create our server without networking just to keep things simple.
+        image_id = nova_fixtures.CinderFixtureNewAttachFlow.IMAGE_BACKED_VOL
+        server_req_body = {
+            # There is no imageRef because this is boot from volume.
+            'server': {
+                'flavorRef': '1',   # m1.tiny from DefaultFlavorsFixture,
+                'name': 'test_boot_from_volume_with_isolated_image',
+                'networks': 'none',
+                'block_device_mapping_v2': [{
+                    'boot_index': 0,
+                    'uuid': image_id,
+                    'source_type': 'volume',
+                    'destination_type': 'volume'
+                }]
+            }
+        }
+        # Note that we're using v2.1 by default but need v2.37 to use
+        # networks='none'.
+        with utils.temporary_mutation(self.api, microversion='2.37'):
+            server = self.api.post_server(server_req_body)
+        server = self._wait_for_state_change(self.api, server, 'ERROR')
+        # Due to bug 1746483 we expect scheduling to fail.
+        self.assertIn("Cannot load 'id' in the base class",
+                      server['fault']['message'])