openstack/tempest
Code Issues Proposed changes

Make scenario snapshot tests work with ephemeral|swap

Browse Source 
Currently, the create_server_snapshot and
test_image_defined_boot_from_volume methods assume that the server
being snapshotted will have only one block device mapping. However, if
the server has an ephemeral disk and/or a swap disk, it will have
multiple block device mappings.

This can cause erroneous scenario test failures if the first block
device mapping in the image service response is not the root disk.

This adjusts create_server_snapshot and
test_image_defined_boot_from_volume to check for a non-null snapshot_id
before using it.

Change-Id: I2417d5a91ae5fbb2101b64a07b6b8c74199e8fb5
This commit is contained in:
melanie witt 2023-08-22 01:43:31 +00:00
parent ab3686d28d
commit 370bea472b
2 changed files with 27 additions and 17 deletions
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28
tempest/scenario/manager.py
View File

@ -898,6 +898,19 @@ class ScenarioTest(tempest.test.BaseTestCase):
if not isinstance(exc, lib_exc.SSHTimeout):
LOG.debug('Network information on a devstack host')
def get_snapshot_id(self, bdms):
if isinstance(bdms, str):
bdms = json.loads(bdms)
snapshot_id = None
for bdm in bdms:
# Look for the block device mapping that actually has a
# snapshot. If the server has ephemeral or swap disk, their
# block device mappings will be present with snapshot_id = None
if 'snapshot_id' in bdm and bdm['snapshot_id'] is not None:
snapshot_id = bdm['snapshot_id']
break
return snapshot_id
def create_server_snapshot(self, server, name=None, **kwargs):
"""Creates server snapshot"""
# Glance client
@ -924,20 +937,19 @@ class ScenarioTest(tempest.test.BaseTestCase):
snapshot_image = _image_client.show_image(image_id)
image_props = snapshot_image
bdm = image_props.get('block_device_mapping')
if bdm:
bdm = json.loads(bdm)
if bdm and 'snapshot_id' in bdm[0]:
snapshot_id = bdm[0]['snapshot_id']
bdms = image_props.get('block_device_mapping')
if bdms:
snapshot_id = self.get_snapshot_id(bdms)
self.assertIsNotNone(snapshot_id)
self.addCleanup(
self.snapshots_client.wait_for_resource_deletion,
snapshot_id)
self.addCleanup(test_utils.call_and_ignore_notfound_exc,
self.snapshots_client.delete_snapshot,
snapshot_id)
waiters.wait_for_volume_resource_status(self.snapshots_client,
snapshot_id,
'available')
waiters.wait_for_volume_resource_status(
self.snapshots_client, snapshot_id, 'available')
image_name = snapshot_image['name']
self.assertEqual(name, image_name)
LOG.debug("Created snapshot image %s for server %s",

4
tempest/scenario/test_volume_boot_pattern.py
View File

@ -11,7 +11,6 @@
# under the License.
from oslo_log import log as logging
from oslo_serialization import jsonutils as json
import testtools
from tempest.common import utils
@ -245,8 +244,7 @@ class TestVolumeBootPattern(manager.EncryptionScenarioTest):
bdms = image.get('block_device_mapping')
if not bdms:
bdms = image['properties']['block_device_mapping']
bdms = json.loads(bdms)
snapshot_id = bdms[0]['snapshot_id']
snapshot_id = self.get_snapshot_id(bdms)
self._delete_snapshot(snapshot_id)
# Now, delete the first server which will also delete the first