openstack
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nova
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nova/nova/tests/functional/test_servers.py

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# Copyright 2011 Justin Santa Barbara
# All Rights Reserved.
#
# 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.
import datetime
import time
import zlib
import mock
from oslo_log import log as logging
from oslo_serialization import base64
from oslo_utils import timeutils
from nova.compute import api as compute_api
from nova.compute import rpcapi
from nova import context
from nova import exception
from nova import objects
from nova.objects import block_device as block_device_obj
from nova import test
from nova.tests import fixtures as nova_fixtures
from nova.tests.functional.api import client
from nova.tests.functional import integrated_helpers
from nova.tests.unit.api.openstack import fakes
from nova.tests.unit import fake_block_device
from nova.tests.unit import fake_network
from nova.tests.unit import fake_notifier
import nova.tests.unit.image.fake
from nova.tests.unit import policy_fixture
from nova.virt import fake
from nova import volume
LOG = logging.getLogger(__name__)
class ServersTestBase(integrated_helpers._IntegratedTestBase):
api_major_version = 'v2'
_force_delete_parameter = 'forceDelete'
_image_ref_parameter = 'imageRef'
_flavor_ref_parameter = 'flavorRef'
_access_ipv4_parameter = 'accessIPv4'
_access_ipv6_parameter = 'accessIPv6'
_return_resv_id_parameter = 'return_reservation_id'
_min_count_parameter = 'min_count'
def setUp(self):
super(ServersTestBase, self).setUp()
# The network service is called as part of server creates but no
# networks have been populated in the db, so stub the methods.
# The networks aren't relevant to what is being tested.
fake_network.set_stub_network_methods(self)
self.conductor = self.start_service(
'conductor', manager='nova.conductor.manager.ConductorManager')
def _wait_for_state_change(self, server, from_status):
for i in range(0, 50):
server = self.api.get_server(server['id'])
if server['status'] != from_status:
break
time.sleep(.1)
return server
def _wait_for_deletion(self, server_id):
# Wait (briefly) for deletion
for _retries in range(50):
try:
found_server = self.api.get_server(server_id)
except client.OpenStackApiNotFoundException:
found_server = None
LOG.debug("Got 404, proceeding")
break
LOG.debug("Found_server=%s", found_server)
# TODO(justinsb): Mock doesn't yet do accurate state changes
# if found_server['status'] != 'deleting':
# break
time.sleep(.1)
# Should be gone
self.assertFalse(found_server)
def _delete_server(self, server_id):
# Delete the server
self.api.delete_server(server_id)
self._wait_for_deletion(server_id)
def _get_access_ips_params(self):
return {self._access_ipv4_parameter: "172.19.0.2",
self._access_ipv6_parameter: "fe80::2"}
def _verify_access_ips(self, server):
self.assertEqual('172.19.0.2',
server[self._access_ipv4_parameter])
self.assertEqual('fe80::2', server[self._access_ipv6_parameter])
class ServersTest(ServersTestBase):
def test_get_servers(self):
# Simple check that listing servers works.
servers = self.api.get_servers()
for server in servers:
LOG.debug("server: %s", server)
def test_create_server_with_error(self):
# Create a server which will enter error state.
def throw_error(*args, **kwargs):
raise exception.BuildAbortException(reason='',
instance_uuid='fake')
self.stub_out('nova.virt.fake.FakeDriver.spawn', throw_error)
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({"server": server})
created_server_id = created_server['id']
found_server = self.api.get_server(created_server_id)
self.assertEqual(created_server_id, found_server['id'])
found_server = self._wait_for_state_change(found_server, 'BUILD')
self.assertEqual('ERROR', found_server['status'])
self._delete_server(created_server_id)
def test_create_and_delete_server(self):
# Creates and deletes a server.
# Create server
# Build the server data gradually, checking errors along the way
server = {}
good_server = self._build_minimal_create_server_request()
post = {'server': server}
# Without an imageRef, this throws 500.
# TODO(justinsb): Check whatever the spec says should be thrown here
self.assertRaises(client.OpenStackApiException,
self.api.post_server, post)
# With an invalid imageRef, this throws 500.
server[self._image_ref_parameter] = self.get_invalid_image()
# TODO(justinsb): Check whatever the spec says should be thrown here
self.assertRaises(client.OpenStackApiException,
self.api.post_server, post)
# Add a valid imageRef
server[self._image_ref_parameter] = good_server.get(
self._image_ref_parameter)
# Without flavorRef, this throws 500
# TODO(justinsb): Check whatever the spec says should be thrown here
self.assertRaises(client.OpenStackApiException,
self.api.post_server, post)
server[self._flavor_ref_parameter] = good_server.get(
self._flavor_ref_parameter)
# Without a name, this throws 500
# TODO(justinsb): Check whatever the spec says should be thrown here
self.assertRaises(client.OpenStackApiException,
self.api.post_server, post)
# Set a valid server name
server['name'] = good_server['name']
created_server = self.api.post_server(post)
LOG.debug("created_server: %s", created_server)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
# Check it's there
found_server = self.api.get_server(created_server_id)
self.assertEqual(created_server_id, found_server['id'])
# It should also be in the all-servers list
servers = self.api.get_servers()
server_ids = [s['id'] for s in servers]
self.assertIn(created_server_id, server_ids)
found_server = self._wait_for_state_change(found_server, 'BUILD')
# It should be available...
# TODO(justinsb): Mock doesn't yet do this...
self.assertEqual('ACTIVE', found_server['status'])
servers = self.api.get_servers(detail=True)
for server in servers:
self.assertIn("image", server)
self.assertIn("flavor", server)
self._delete_server(created_server_id)
def _force_reclaim(self):
# Make sure that compute manager thinks the instance is
# old enough to be expired
the_past = timeutils.utcnow() + datetime.timedelta(hours=1)
timeutils.set_time_override(override_time=the_past)
self.addCleanup(timeutils.clear_time_override)
ctxt = context.get_admin_context()
self.compute._reclaim_queued_deletes(ctxt)
def test_deferred_delete(self):
# Creates, deletes and waits for server to be reclaimed.
self.flags(reclaim_instance_interval=1)
# Create server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({'server': server})
LOG.debug("created_server: %s", created_server)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
# Wait for it to finish being created
found_server = self._wait_for_state_change(created_server, 'BUILD')
# It should be available...
self.assertEqual('ACTIVE', found_server['status'])
# Cannot restore unless instance is deleted
self.assertRaises(client.OpenStackApiException,
self.api.post_server_action, created_server_id,
{'restore': {}})
# Delete the server
self.api.delete_server(created_server_id)
# Wait for queued deletion
found_server = self._wait_for_state_change(found_server, 'ACTIVE')
self.assertEqual('SOFT_DELETED', found_server['status'])
self._force_reclaim()
# Wait for real deletion
self._wait_for_deletion(created_server_id)
def test_deferred_delete_restore(self):
# Creates, deletes and restores a server.
self.flags(reclaim_instance_interval=3600)
# Create server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({'server': server})
LOG.debug("created_server: %s", created_server)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
# Wait for it to finish being created
found_server = self._wait_for_state_change(created_server, 'BUILD')
# It should be available...
self.assertEqual('ACTIVE', found_server['status'])
# Delete the server
self.api.delete_server(created_server_id)
# Wait for queued deletion
found_server = self._wait_for_state_change(found_server, 'ACTIVE')
self.assertEqual('SOFT_DELETED', found_server['status'])
# Restore server
self.api.post_server_action(created_server_id, {'restore': {}})
# Wait for server to become active again
found_server = self._wait_for_state_change(found_server, 'DELETED')
self.assertEqual('ACTIVE', found_server['status'])
def test_deferred_delete_restore_overquota(self):
# Test that a restore that would put the user over quota fails
self.flags(instances=1, group='quota')
# Creates, deletes and restores a server.
self.flags(reclaim_instance_interval=3600)
# Create server
server = self._build_minimal_create_server_request()
created_server1 = self.api.post_server({'server': server})
LOG.debug("created_server: %s", created_server1)
self.assertTrue(created_server1['id'])
created_server_id1 = created_server1['id']
# Wait for it to finish being created
found_server1 = self._wait_for_state_change(created_server1, 'BUILD')
# It should be available...
self.assertEqual('ACTIVE', found_server1['status'])
# Delete the server
self.api.delete_server(created_server_id1)
# Wait for queued deletion
found_server1 = self._wait_for_state_change(found_server1, 'ACTIVE')
self.assertEqual('SOFT_DELETED', found_server1['status'])
# Create a second server
server = self._build_minimal_create_server_request()
created_server2 = self.api.post_server({'server': server})
LOG.debug("created_server: %s", created_server2)
self.assertTrue(created_server2['id'])
# Wait for it to finish being created
found_server2 = self._wait_for_state_change(created_server2, 'BUILD')
# It should be available...
self.assertEqual('ACTIVE', found_server2['status'])
# Try to restore the first server, it should fail
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_action,
created_server_id1, {'restore': {}})
self.assertEqual(403, ex.response.status_code)
self.assertEqual('SOFT_DELETED', found_server1['status'])
def test_deferred_delete_force(self):
# Creates, deletes and force deletes a server.
self.flags(reclaim_instance_interval=3600)
# Create server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({'server': server})
LOG.debug("created_server: %s", created_server)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
# Wait for it to finish being created
found_server = self._wait_for_state_change(created_server, 'BUILD')
# It should be available...
self.assertEqual('ACTIVE', found_server['status'])
# Delete the server
self.api.delete_server(created_server_id)
# Wait for queued deletion
found_server = self._wait_for_state_change(found_server, 'ACTIVE')
self.assertEqual('SOFT_DELETED', found_server['status'])
# Force delete server
self.api.post_server_action(created_server_id,
{self._force_delete_parameter: {}})
# Wait for real deletion
self._wait_for_deletion(created_server_id)
def test_create_server_with_metadata(self):
# Creates a server with metadata.
# Build the server data gradually, checking errors along the way
server = self._build_minimal_create_server_request()
metadata = {}
for i in range(30):
metadata['key_%s' % i] = 'value_%s' % i
server['metadata'] = metadata
post = {'server': server}
created_server = self.api.post_server(post)
LOG.debug("created_server: %s", created_server)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
found_server = self.api.get_server(created_server_id)
self.assertEqual(created_server_id, found_server['id'])
self.assertEqual(metadata, found_server.get('metadata'))
# The server should also be in the all-servers details list
servers = self.api.get_servers(detail=True)
server_map = {server['id']: server for server in servers}
found_server = server_map.get(created_server_id)
self.assertTrue(found_server)
# Details do include metadata
self.assertEqual(metadata, found_server.get('metadata'))
# The server should also be in the all-servers summary list
servers = self.api.get_servers(detail=False)
server_map = {server['id']: server for server in servers}
found_server = server_map.get(created_server_id)
self.assertTrue(found_server)
# Summary should not include metadata
self.assertFalse(found_server.get('metadata'))
# Cleanup
self._delete_server(created_server_id)
def test_server_metadata_actions_negative_invalid_state(self):
# Create server with metadata
server = self._build_minimal_create_server_request()
metadata = {'key_1': 'value_1'}
server['metadata'] = metadata
post = {'server': server}
created_server = self.api.post_server(post)
found_server = self._wait_for_state_change(created_server, 'BUILD')
self.assertEqual('ACTIVE', found_server['status'])
self.assertEqual(metadata, found_server.get('metadata'))
server_id = found_server['id']
# Change status from ACTIVE to SHELVED for negative test
self.flags(shelved_offload_time = -1)
self.api.post_server_action(server_id, {'shelve': {}})
found_server = self._wait_for_state_change(found_server, 'ACTIVE')
self.assertEqual('SHELVED', found_server['status'])
metadata = {'key_2': 'value_2'}
# Update Metadata item in SHELVED (not ACTIVE, etc.)
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_metadata,
server_id, metadata)
self.assertEqual(409, ex.response.status_code)
self.assertEqual('SHELVED', found_server['status'])
# Delete Metadata item in SHELVED (not ACTIVE, etc.)
ex = self.assertRaises(client.OpenStackApiException,
self.api.delete_server_metadata,
server_id, 'key_1')
self.assertEqual(409, ex.response.status_code)
self.assertEqual('SHELVED', found_server['status'])
# Cleanup
self._delete_server(server_id)
def test_create_and_rebuild_server(self):
# Rebuild a server with metadata.
# create a server with initially has no metadata
server = self._build_minimal_create_server_request()
server_post = {'server': server}
metadata = {}
for i in range(30):
metadata['key_%s' % i] = 'value_%s' % i
server_post['server']['metadata'] = metadata
created_server = self.api.post_server(server_post)
LOG.debug("created_server: %s", created_server)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
created_server = self._wait_for_state_change(created_server, 'BUILD')
# rebuild the server with metadata and other server attributes
post = {}
post['rebuild'] = {
self._image_ref_parameter: "76fa36fc-c930-4bf3-8c8a-ea2a2420deb6",
"name": "blah",
self._access_ipv4_parameter: "172.19.0.2",
self._access_ipv6_parameter: "fe80::2",
"metadata": {'some': 'thing'},
}
post['rebuild'].update(self._get_access_ips_params())
self.api.post_server_action(created_server_id, post)
LOG.debug("rebuilt server: %s", created_server)
self.assertTrue(created_server['id'])
found_server = self.api.get_server(created_server_id)
self.assertEqual(created_server_id, found_server['id'])
self.assertEqual({'some': 'thing'}, found_server.get('metadata'))
self.assertEqual('blah', found_server.get('name'))
self.assertEqual(post['rebuild'][self._image_ref_parameter],
found_server.get('image')['id'])
self._verify_access_ips(found_server)
# rebuild the server with empty metadata and nothing else
post = {}
post['rebuild'] = {
self._image_ref_parameter: "76fa36fc-c930-4bf3-8c8a-ea2a2420deb6",
"metadata": {},
}
self.api.post_server_action(created_server_id, post)
LOG.debug("rebuilt server: %s", created_server)
self.assertTrue(created_server['id'])
found_server = self.api.get_server(created_server_id)
self.assertEqual(created_server_id, found_server['id'])
self.assertEqual({}, found_server.get('metadata'))
self.assertEqual('blah', found_server.get('name'))
self.assertEqual(post['rebuild'][self._image_ref_parameter],
found_server.get('image')['id'])
self._verify_access_ips(found_server)
# Cleanup
self._delete_server(created_server_id)
def test_rename_server(self):
# Test building and renaming a server.
# Create a server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({'server': server})
LOG.debug("created_server: %s", created_server)
server_id = created_server['id']
self.assertTrue(server_id)
# Rename the server to 'new-name'
self.api.put_server(server_id, {'server': {'name': 'new-name'}})
# Check the name of the server
created_server = self.api.get_server(server_id)
self.assertEqual(created_server['name'], 'new-name')
# Cleanup
self._delete_server(server_id)
def test_create_multiple_servers(self):
# Creates multiple servers and checks for reservation_id.
# Create 2 servers, setting 'return_reservation_id, which should
# return a reservation_id
server = self._build_minimal_create_server_request()
server[self._min_count_parameter] = 2
server[self._return_resv_id_parameter] = True
post = {'server': server}
response = self.api.post_server(post)
self.assertIn('reservation_id', response)
reservation_id = response['reservation_id']
self.assertNotIn(reservation_id, ['', None])
# Create 1 more server, which should not return a reservation_id
server = self._build_minimal_create_server_request()
post = {'server': server}
created_server = self.api.post_server(post)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
# lookup servers created by the first request.
servers = self.api.get_servers(detail=True,
search_opts={'reservation_id': reservation_id})
server_map = {server['id']: server for server in servers}
found_server = server_map.get(created_server_id)
# The server from the 2nd request should not be there.
self.assertIsNone(found_server)
# Should have found 2 servers.
self.assertEqual(len(server_map), 2)
# Cleanup
self._delete_server(created_server_id)
for server_id in server_map:
self._delete_server(server_id)
def test_create_server_with_injected_files(self):
# Creates a server with injected_files.
personality = []
# Inject a text file
data = 'Hello, World!'
personality.append({
'path': '/helloworld.txt',
'contents': base64.encode_as_bytes(data),
})
# Inject a binary file
data = zlib.compress(b'Hello, World!')
personality.append({
'path': '/helloworld.zip',
'contents': base64.encode_as_bytes(data),
})
# Create server
server = self._build_minimal_create_server_request()
server['personality'] = personality
post = {'server': server}
created_server = self.api.post_server(post)
LOG.debug("created_server: %s", created_server)
self.assertTrue(created_server['id'])
created_server_id = created_server['id']
# Check it's there
found_server = self.api.get_server(created_server_id)
self.assertEqual(created_server_id, found_server['id'])
found_server = self._wait_for_state_change(found_server, 'BUILD')
self.assertEqual('ACTIVE', found_server['status'])
# Cleanup
self._delete_server(created_server_id)
def test_stop_start_servers_negative_invalid_state(self):
# Create server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({"server": server})
created_server_id = created_server['id']
found_server = self._wait_for_state_change(created_server, 'BUILD')
self.assertEqual('ACTIVE', found_server['status'])
# Start server in ACTIVE
# NOTE(mkoshiya): When os-start API runs, the server status
# must be SHUTOFF.
# By returning 409, I want to confirm that the ACTIVE server does not
# cause unexpected behavior.
post = {'os-start': {}}
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_action,
created_server_id, post)
self.assertEqual(409, ex.response.status_code)
self.assertEqual('ACTIVE', found_server['status'])
# Stop server
post = {'os-stop': {}}
self.api.post_server_action(created_server_id, post)
found_server = self._wait_for_state_change(found_server, 'ACTIVE')
self.assertEqual('SHUTOFF', found_server['status'])
# Stop server in SHUTOFF
# NOTE(mkoshiya): When os-stop API runs, the server status
# must be ACTIVE or ERROR.
# By returning 409, I want to confirm that the SHUTOFF server does not
# cause unexpected behavior.
post = {'os-stop': {}}
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_action,
created_server_id, post)
self.assertEqual(409, ex.response.status_code)
self.assertEqual('SHUTOFF', found_server['status'])
# Cleanup
self._delete_server(created_server_id)
def test_revert_resized_server_negative_invalid_state(self):
# Create server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({"server": server})
created_server_id = created_server['id']
found_server = self._wait_for_state_change(created_server, 'BUILD')
self.assertEqual('ACTIVE', found_server['status'])
# Revert resized server in ACTIVE
# NOTE(yatsumi): When revert resized server API runs,
# the server status must be VERIFY_RESIZE.
# By returning 409, I want to confirm that the ACTIVE server does not
# cause unexpected behavior.
post = {'revertResize': {}}
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_action,
created_server_id, post)
self.assertEqual(409, ex.response.status_code)
self.assertEqual('ACTIVE', found_server['status'])
# Cleanup
self._delete_server(created_server_id)
def test_resize_server_negative_invalid_state(self):
# Avoid migration
self.flags(allow_resize_to_same_host=True)
# Create server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({"server": server})
created_server_id = created_server['id']
found_server = self._wait_for_state_change(created_server, 'BUILD')
self.assertEqual('ACTIVE', found_server['status'])
# Resize server(flavorRef: 1 -> 2)
post = {'resize': {"flavorRef": "2", "OS-DCF:diskConfig": "AUTO"}}
self.api.post_server_action(created_server_id, post)
found_server = self._wait_for_state_change(found_server, 'RESIZE')
self.assertEqual('VERIFY_RESIZE', found_server['status'])
# Resize server in VERIFY_RESIZE(flavorRef: 2 -> 1)
# NOTE(yatsumi): When resize API runs, the server status
# must be ACTIVE or SHUTOFF.
# By returning 409, I want to confirm that the VERIFY_RESIZE server
# does not cause unexpected behavior.
post = {'resize': {"flavorRef": "1", "OS-DCF:diskConfig": "AUTO"}}
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_action,
created_server_id, post)
self.assertEqual(409, ex.response.status_code)
self.assertEqual('VERIFY_RESIZE', found_server['status'])
# Cleanup
self._delete_server(created_server_id)
def test_confirm_resized_server_negative_invalid_state(self):
# Create server
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({"server": server})
created_server_id = created_server['id']
found_server = self._wait_for_state_change(created_server, 'BUILD')
self.assertEqual('ACTIVE', found_server['status'])
# Confirm resized server in ACTIVE
# NOTE(yatsumi): When confirm resized server API runs,
# the server status must be VERIFY_RESIZE.
# By returning 409, I want to confirm that the ACTIVE server does not
# cause unexpected behavior.
post = {'confirmResize': {}}
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_action,
created_server_id, post)
self.assertEqual(409, ex.response.status_code)
self.assertEqual('ACTIVE', found_server['status'])
# Cleanup
self._delete_server(created_server_id)
def test_resize_server_overquota(self):
self.flags(cores=1, group='quota')
self.flags(ram=512, group='quota')
# Create server with default flavor, 1 core, 512 ram
server = self._build_minimal_create_server_request()
created_server = self.api.post_server({"server": server})
created_server_id = created_server['id']
found_server = self._wait_for_state_change(created_server, 'BUILD')
self.assertEqual('ACTIVE', found_server['status'])
# Try to resize to flavorid 2, 1 core, 2048 ram
post = {'resize': {'flavorRef': '2'}}
ex = self.assertRaises(client.OpenStackApiException,
self.api.post_server_action,
created_server_id, post)
self.assertEqual(403, ex.response.status_code)
class ServersTestV21(ServersTest):
api_major_version = 'v2.1'
class ServersTestV219(ServersTestBase):
api_major_version = 'v2.1'
def _create_server(self, set_desc = True, desc = None):
server = self._build_minimal_create_server_request()
if set_desc:
server['description'] = desc
post = {'server': server}
response = self.api.api_post('/servers', post).body
return (server, response['server'])
def _update_server(self, server_id, set_desc = True, desc = None):
new_name = integrated_helpers.generate_random_alphanumeric(8)
server = {'server': {'name': new_name}}
if set_desc:
server['server']['description'] = desc
self.api.api_put('/servers/%s' % server_id, server)
def _rebuild_server(self, server_id, set_desc = True, desc = None):
new_name = integrated_helpers.generate_random_alphanumeric(8)
post = {}
post['rebuild'] = {
"name": new_name,
self._image_ref_parameter: "76fa36fc-c930-4bf3-8c8a-ea2a2420deb6",
self._access_ipv4_parameter: "172.19.0.2",
self._access_ipv6_parameter: "fe80::2",
"metadata": {'some': 'thing'},
}
post['rebuild'].update(self._get_access_ips_params())
if set_desc:
post['rebuild']['description'] = desc
self.api.api_post('/servers/%s/action' % server_id, post)
def _create_server_and_verify(self, set_desc = True, expected_desc = None):
# Creates a server with a description and verifies it is
# in the GET responses.
created_server_id = self._create_server(set_desc,
expected_desc)[1]['id']
self._verify_server_description(created_server_id, expected_desc)
self._delete_server(created_server_id)
def _update_server_and_verify(self, server_id, set_desc = True,
expected_desc = None):
# Updates a server with a description and verifies it is
# in the GET responses.
self._update_server(server_id, set_desc, expected_desc)
self._verify_server_description(server_id, expected_desc)
def _rebuild_server_and_verify(self, server_id, set_desc = True,
expected_desc = None):
# Rebuilds a server with a description and verifies it is
# in the GET responses.
self._rebuild_server(server_id, set_desc, expected_desc)
self._verify_server_description(server_id, expected_desc)
def _verify_server_description(self, server_id, expected_desc = None,
desc_in_resp = True):
# Calls GET on the servers and verifies that the description
# is set as expected in the response, or not set at all.
response = self.api.api_get('/servers/%s' % server_id)
found_server = response.body['server']
self.assertEqual(server_id, found_server['id'])
if desc_in_resp:
# Verify the description is set as expected (can be None)
self.assertEqual(expected_desc, found_server.get('description'))
else:
# Verify the description is not included in the response.
self.assertNotIn('description', found_server)
servers = self.api.api_get('/servers/detail').body['servers']
server_map = {server['id']: server for server in servers}
found_server = server_map.get(server_id)
self.assertTrue(found_server)
if desc_in_resp:
# Verify the description is set as expected (can be None)
self.assertEqual(expected_desc, found_server.get('description'))
else:
# Verify the description is not included in the response.
self.assertNotIn('description', found_server)
def _create_assertRaisesRegex(self, desc):
# Verifies that a 400 error is thrown on create server
with self.assertRaisesRegex(client.OpenStackApiException,
".*Unexpected status code.*") as cm:
self._create_server(True, desc)
self.assertEqual(400, cm.exception.response.status_code)
def _update_assertRaisesRegex(self, server_id, desc):
# Verifies that a 400 error is thrown on update server
with self.assertRaisesRegex(client.OpenStackApiException,
".*Unexpected status code.*") as cm:
self._update_server(server_id, True, desc)
self.assertEqual(400, cm.exception.response.status_code)
def _rebuild_assertRaisesRegex(self, server_id, desc):
# Verifies that a 400 error is thrown on rebuild server
with self.assertRaisesRegex(client.OpenStackApiException,
".*Unexpected status code.*") as cm:
self._rebuild_server(server_id, True, desc)
self.assertEqual(400, cm.exception.response.status_code)
def test_create_server_with_description(self):
self.api.microversion = '2.19'
# Create and get a server with a description
self._create_server_and_verify(True, 'test description')
# Create and get a server with an empty description
self._create_server_and_verify(True, '')
# Create and get a server with description set to None
self._create_server_and_verify()
# Create and get a server without setting the description
self._create_server_and_verify(False)
def test_update_server_with_description(self):
self.api.microversion = '2.19'
# Create a server with an initial description
server_id = self._create_server(True, 'test desc 1')[1]['id']
# Update and get the server with a description
self._update_server_and_verify(server_id, True, 'updated desc')
# Update and get the server name without changing the description
self._update_server_and_verify(server_id, False, 'updated desc')
# Update and get the server with an empty description
self._update_server_and_verify(server_id, True, '')
# Update and get the server by removing the description (set to None)
self._update_server_and_verify(server_id)
# Update and get the server with a 2nd new description
self._update_server_and_verify(server_id, True, 'updated desc2')
# Cleanup
self._delete_server(server_id)
def test_rebuild_server_with_description(self):
self.api.microversion = '2.19'
# Create a server with an initial description
server = self._create_server(True, 'test desc 1')[1]
server_id = server['id']
self._wait_for_state_change(server, 'BUILD')
# Rebuild and get the server with a description
self._rebuild_server_and_verify(server_id, True, 'updated desc')
# Rebuild and get the server name without changing the description
self._rebuild_server_and_verify(server_id, False, 'updated desc')
# Rebuild and get the server with an empty description
self._rebuild_server_and_verify(server_id, True, '')
# Rebuild and get the server by removing the description (set to None)
self._rebuild_server_and_verify(server_id)
# Rebuild and get the server with a 2nd new description
self._rebuild_server_and_verify(server_id, True, 'updated desc2')
# Cleanup
self._delete_server(server_id)
def test_version_compatibility(self):
# Create a server with microversion v2.19 and a description.
self.api.microversion = '2.19'
server_id = self._create_server(True, 'test desc 1')[1]['id']
# Verify that the description is not included on V2.18 GETs
self.api.microversion = '2.18'
self._verify_server_description(server_id, desc_in_resp = False)
# Verify that updating the server with description on V2.18
# results in a 400 error
self._update_assertRaisesRegex(server_id, 'test update 2.18')
# Verify that rebuilding the server with description on V2.18
# results in a 400 error
self._rebuild_assertRaisesRegex(server_id, 'test rebuild 2.18')
# Cleanup
self._delete_server(server_id)
# Create a server on V2.18 and verify that the description
# defaults to the name on a V2.19 GET
server_req, response = self._create_server(False)
server_id = response['id']
self.api.microversion = '2.19'
self._verify_server_description(server_id, server_req['name'])
# Cleanup
self._delete_server(server_id)
# Verify that creating a server with description on V2.18
# results in a 400 error
self.api.microversion = '2.18'
self._create_assertRaisesRegex('test create 2.18')
def test_description_errors(self):
self.api.microversion = '2.19'
# Create servers with invalid descriptions. These throw 400.
# Invalid unicode with non-printable control char
self._create_assertRaisesRegex(u'invalid\0dstring')
# Description is longer than 255 chars
self._create_assertRaisesRegex('x' * 256)
# Update and rebuild servers with invalid descriptions.
# These throw 400.
server_id = self._create_server(True, "desc")[1]['id']
# Invalid unicode with non-printable control char
self._update_assertRaisesRegex(server_id, u'invalid\u0604string')
self._rebuild_assertRaisesRegex(server_id, u'invalid\u0604string')
# Description is longer than 255 chars
self._update_assertRaisesRegex(server_id, 'x' * 256)
self._rebuild_assertRaisesRegex(server_id, 'x' * 256)
class ServerTestV220(ServersTestBase):
api_major_version = 'v2.1'
def setUp(self):
super(ServerTestV220, self).setUp()
self.api.microversion = '2.20'
fake_network.set_stub_network_methods(self)
self.ctxt = context.get_admin_context()
def _create_server(self):
server = self._build_minimal_create_server_request()
post = {'server': server}
response = self.api.api_post('/servers', post).body
return (server, response['server'])
def _shelve_server(self):
server = self._create_server()[1]
server_id = server['id']
self._wait_for_state_change(server, 'BUILD')
self.api.post_server_action(server_id, {'shelve': None})
return self._wait_for_state_change(server, 'ACTIVE')
def _get_fake_bdms(self, ctxt):
return block_device_obj.block_device_make_list(self.ctxt,
[fake_block_device.FakeDbBlockDeviceDict(
{'device_name': '/dev/vda',
'source_type': 'volume',
'destination_type': 'volume',
'volume_id': '5d721593-f033-4f6d-ab6f-b5b067e61bc4'})])
def test_attach_detach_vol_to_shelved_server(self):
self.flags(shelved_offload_time=-1)
found_server = self._shelve_server()
self.assertEqual('SHELVED', found_server['status'])
server_id = found_server['id']
# Test attach volume
with test.nested(mock.patch.object(compute_api.API,
'_check_attach_and_reserve_volume'),
mock.patch.object(rpcapi.ComputeAPI,
'attach_volume')) as (mock_reserve,
mock_attach):
volume_attachment = {"volumeAttachment": {"volumeId":
"5d721593-f033-4f6d-ab6f-b5b067e61bc4"}}
self.api.api_post(
'/servers/%s/os-volume_attachments' % (server_id),
volume_attachment)
self.assertTrue(mock_reserve.called)
self.assertTrue(mock_attach.called)
# Test detach volume
self.stub_out('nova.volume.cinder.API.get', fakes.stub_volume_get)
with test.nested(mock.patch.object(volume.cinder.API,
'begin_detaching'),
mock.patch.object(objects.BlockDeviceMappingList,
'get_by_instance_uuid'),
mock.patch.object(rpcapi.ComputeAPI,
'detach_volume')
) as (mock_check, mock_get_bdms, mock_rpc):
mock_get_bdms.return_value = self._get_fake_bdms(self.ctxt)
attachment_id = mock_get_bdms.return_value[0]['volume_id']
self.api.api_delete('/servers/%s/os-volume_attachments/%s' %
(server_id, attachment_id))
self.assertTrue(mock_check.called)
self.assertTrue(mock_rpc.called)
self._delete_server(server_id)
def test_attach_detach_vol_to_shelved_offloaded_server(self):
self.flags(shelved_offload_time=0)
found_server = self._shelve_server()
self.assertEqual('SHELVED_OFFLOADED', found_server['status'])
server_id = found_server['id']
# Test attach volume
with test.nested(mock.patch.object(compute_api.API,
'_check_attach_and_reserve_volume'),
mock.patch.object(volume.cinder.API,
'attach')) as (mock_reserve, mock_vol):
volume_attachment = {"volumeAttachment": {"volumeId":
"5d721593-f033-4f6d-ab6f-b5b067e61bc4"}}
attach_response = self.api.api_post(
'/servers/%s/os-volume_attachments' % (server_id),
volume_attachment).body['volumeAttachment']
self.assertTrue(mock_reserve.called)
self.assertTrue(mock_vol.called)
self.assertIsNone(attach_response['device'])
# Test detach volume
self.stub_out('nova.volume.cinder.API.get', fakes.stub_volume_get)
with test.nested(mock.patch.object(volume.cinder.API,
'begin_detaching'),
mock.patch.object(objects.BlockDeviceMappingList,
'get_by_instance_uuid'),
mock.patch.object(compute_api.API,
'_local_cleanup_bdm_volumes')
) as (mock_check, mock_get_bdms, mock_clean_vols):
mock_get_bdms.return_value = self._get_fake_bdms(self.ctxt)
attachment_id = mock_get_bdms.return_value[0]['volume_id']
self.api.api_delete('/servers/%s/os-volume_attachments/%s' %
(server_id, attachment_id))
self.assertTrue(mock_check.called)
self.assertTrue(mock_clean_vols.called)
self._delete_server(server_id)
class ProviderUsageBaseTestCase(test.TestCase,
integrated_helpers.InstanceHelperMixin):
"""Base test class for functional tests that check provider usage
and consumer allocations in Placement during various operations.
Subclasses must define a **compute_driver** attribute for the virt driver
to use.
This class sets up standard fixtures and controller services but does not
start any compute services, that is left to the subclass.
"""
microversion = 'latest'
_enabled_filters = ['RetryFilter', 'ComputeFilter']
def setUp(self):
self.flags(compute_driver=self.compute_driver)
self.flags(enabled_filters=self._enabled_filters,
group='filter_scheduler')
super(ProviderUsageBaseTestCase, self).setUp()
self.useFixture(policy_fixture.RealPolicyFixture())
self.useFixture(nova_fixtures.NeutronFixture(self))
self.useFixture(nova_fixtures.AllServicesCurrent())
placement = self.useFixture(nova_fixtures.PlacementFixture())
self.placement_api = placement.api
api_fixture = self.useFixture(nova_fixtures.OSAPIFixture(
api_version='v2.1'))
self.admin_api = api_fixture.admin_api
self.admin_api.microversion = self.microversion
self.api = self.admin_api
# the image fake backend needed for image discovery
nova.tests.unit.image.fake.stub_out_image_service(self)
self.start_service('conductor')
self.start_service('scheduler')
self.addCleanup(nova.tests.unit.image.fake.FakeImageService_reset)
fake_network.set_stub_network_methods(self)
def _get_provider_uuid_by_host(self, host):
# NOTE(gibi): the compute node id is the same as the compute node
# provider uuid on that compute
resp = self.admin_api.api_get(
'os-hypervisors?hypervisor_hostname_pattern=%s' % host).body
return resp['hypervisors'][0]['id']
def _get_provider_usages(self, provider_uuid):
return self.placement_api.get(
'/resource_providers/%s/usages' % provider_uuid).body['usages']
def _get_allocations_by_server_uuid(self, server_uuid):
return self.placement_api.get(
'/allocations/%s' % server_uuid).body['allocations']
def assertFlavorMatchesAllocation(self, flavor, allocation):
self.assertEqual(flavor['vcpus'], allocation['VCPU'])
self.assertEqual(flavor['ram'], allocation['MEMORY_MB'])
self.assertEqual(flavor['disk'], allocation['DISK_GB'])
def assertFlavorsMatchAllocation(self, old_flavor, new_flavor, allocation):
self.assertEqual(old_flavor['vcpus'] + new_flavor['vcpus'],
allocation['VCPU'])
self.assertEqual(old_flavor['ram'] + new_flavor['ram'],
allocation['MEMORY_MB'])
self.assertEqual(old_flavor['disk'] + new_flavor['disk'],
allocation['DISK_GB'])
class ServerMovingTests(ProviderUsageBaseTestCase):
"""Tests moving servers while checking the resource allocations and usages
These tests use two compute hosts. Boot a server on one of them then try to
move the server to the other. At every step resource allocation of the
server and the resource usages of the computes are queried from placement
API and asserted.
"""
REQUIRES_LOCKING = True
# NOTE(danms): The test defaults to using SmallFakeDriver,
# which only has one vcpu, which can't take the doubled allocation
# we're now giving it. So, use the bigger MediumFakeDriver here.
compute_driver = 'fake.MediumFakeDriver'
def setUp(self):
super(ServerMovingTests, self).setUp()
fake_notifier.stub_notifier(self)
self.addCleanup(fake_notifier.reset)
fake.set_nodes(['host1'])
self.flags(host='host1')
self.compute1 = self.start_service('compute', host='host1')
# NOTE(sbauza): Make sure the FakeDriver returns a different nodename
# for the second compute node.
fake.set_nodes(['host2'])
self.addCleanup(fake.restore_nodes)
self.flags(host='host2')
self.compute2 = self.start_service('compute', host='host2')
flavors = self.api.get_flavors()
self.flavor1 = flavors[0]
self.flavor2 = flavors[1]
# create flavor3 which has less MEMORY_MB but more DISK_GB than flavor2
flavor_body = {'flavor':
{'name': 'test_flavor3',
'ram': int(self.flavor2['ram'] / 2),
'vcpus': 1,
'disk': self.flavor2['disk'] * 2,
'id': 'a22d5517-147c-4147-a0d1-e698df5cd4e3'
}}
self.flavor3 = self.api.post_flavor(flavor_body)
def _other_hostname(self, host):
other_host = {'host1': 'host2',
'host2': 'host1'}
return other_host[host]
def _run_periodics(self):
# NOTE(jaypipes): We always run periodics in the same order: first on
# compute1, then on compute2. However, we want to test scenarios when
# the periodics run at different times during mover operations. This is
# why we have the "reverse" tests which simply switch the source and
# dest host while keeping the order in which we run the
# periodics. This effectively allows us to test the matrix of timing
# scenarios during move operations.
ctx = context.get_admin_context()
LOG.info('Running periodic for compute1 (%s)',
self.compute1.manager.host)
self.compute1.manager.update_available_resource(ctx)
LOG.info('Running periodic for compute2 (%s)',
self.compute2.manager.host)
self.compute2.manager.update_available_resource(ctx)
LOG.info('Finished with periodics')
def test_resize_revert(self):
self._test_resize_revert(dest_hostname='host1')
def test_resize_revert_reverse(self):
self._test_resize_revert(dest_hostname='host2')
def test_resize_confirm(self):
self._test_resize_confirm(dest_hostname='host1')
def test_resize_confirm_reverse(self):
self._test_resize_confirm(dest_hostname='host2')
def _boot_and_check_allocations(self, flavor, source_hostname):
server_req = self._build_minimal_create_server_request(
self.api, 'some-server', flavor_id=flavor['id'],
image_uuid='155d900f-4e14-4e4c-a73d-069cbf4541e6',
networks=[])
server_req['availability_zone'] = 'nova:%s' % source_hostname
LOG.info('booting on %s', source_hostname)
created_server = self.api.post_server({'server': server_req})
server = self._wait_for_state_change(
self.admin_api, created_server, 'ACTIVE')
# Verify that our source host is what the server ended up on
self.assertEqual(source_hostname, server['OS-EXT-SRV-ATTR:host'])
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(
self._other_hostname(source_hostname))
# Before we run periodics, make sure that we have allocations/usages
# only on the source host
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(flavor, source_usages)
# Check that the other provider has no usage
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, dest_usages)
# Check that the server only allocates resource from the host it is
# booted on
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations),
'No allocation for the server on the host it'
'is booted on')
allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(flavor, allocation)
self._run_periodics()
# After running the periodics but before we start any resize operation,
# we should have exactly the same allocation/usage information as
# before running the periodics
# Check usages on the selected host after boot
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(flavor, source_usages)
# Check that the other provider has no usage
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, dest_usages)
# Check that the server only allocates resource from the host it is
# booted on
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations),
'No allocation for the server on the host it'
'is booted on')
allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(flavor, allocation)
return server
def _resize_and_check_allocations(self, server, old_flavor, new_flavor,
source_rp_uuid, dest_rp_uuid):
# Resize the server and check usages in VERIFY_RESIZE state
self.flags(allow_resize_to_same_host=False)
resize_req = {
'resize': {
'flavorRef': new_flavor['id']
}
}
self.api.post_server_action(server['id'], resize_req)
self._wait_for_state_change(self.api, server, 'VERIFY_RESIZE')
# OK, so the resize operation has run, but we have not yet confirmed or
# reverted the resize operation. Before we run periodics, make sure
# that we have allocations/usages on BOTH the source and the
# destination hosts (because during select_destinations(), the
# scheduler should have created a "doubled-up" allocation referencing
# both the source and destination hosts
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(old_flavor, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(new_flavor, dest_usages)
# Check that the server allocates resource from both source and dest
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(2, len(allocations),
'Expected scheduler to create doubled-up allocation')
source_alloc = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(old_flavor, source_alloc)
dest_alloc = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(new_flavor, dest_alloc)
self._run_periodics()
# the original host expected to have the old resource usage
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(old_flavor, source_usages)
# the dest host expected to have resource allocation based on
# the new flavor the server is resized to
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(new_flavor, dest_usages)
# and our server should have allocation on both providers accordingly
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(2, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(old_flavor, source_allocation)
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(new_flavor, dest_allocation)
def _delete_and_check_allocations(self, server, source_rp_uuid,
dest_rp_uuid):
# Check usages after delete
self.api.delete_server(server['id'])
self._wait_until_deleted(server)
# NOTE(gibi): The resource allocation is deleted after the instance is
# destroyed in the db so wait_until_deleted might return before the
# the resource are deleted in placement. So we need to wait for the
# instance.delete.end notification as that is emitted after the
# resources are freed.
fake_notifier.wait_for_versioned_notification('instance.delete.end')
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, dest_usages)
# and no allocations for the deleted server
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(0, len(allocations))
def _test_resize_revert(self, dest_hostname):
source_hostname = self._other_hostname(dest_hostname)
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(self.flavor1,
source_hostname)
self._resize_and_check_allocations(server, self.flavor1, self.flavor2,
source_rp_uuid, dest_rp_uuid)
# Revert the resize and check the usages
post = {'revertResize': None}
self.api.post_server_action(server['id'], post)
self._wait_for_state_change(self.api, server, 'ACTIVE')
self._run_periodics()
# the original host expected to have the old resource allocation
source_usages = self._get_provider_usages(source_rp_uuid)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, dest_usages,
'Target host %s still has usage after the resize '
'has been reverted' % dest_hostname)
# Check that the server only allocates resource from the original host
self.assertEqual(1, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, source_allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def _test_resize_confirm(self, dest_hostname):
source_hostname = self._other_hostname(dest_hostname)
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(self.flavor1,
source_hostname)
self._resize_and_check_allocations(server, self.flavor1, self.flavor2,
source_rp_uuid, dest_rp_uuid)
# Confirm the resize and check the usages
post = {'confirmResize': None}
self.api.post_server_action(
server['id'], post, check_response_status=[204])
self._wait_for_state_change(self.api, server, 'ACTIVE')
# After confirming, we should have an allocation only on the
# destination host
allocations = self._get_allocations_by_server_uuid(server['id'])
# and the server allocates only from the target host
self.assertEqual(1, len(allocations))
source_usages = self._get_provider_usages(source_rp_uuid)
dest_usages = self._get_provider_usages(dest_rp_uuid)
# and the target host allocation should be according to the new flavor
self.assertFlavorMatchesAllocation(self.flavor2, dest_usages)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, source_usages,
'The source host %s still has usages after the '
'resize has been confirmed' % source_hostname)
# and the target host allocation should be according to the new flavor
self.assertFlavorMatchesAllocation(self.flavor2, dest_usages)
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor2, dest_allocation)
self._run_periodics()
# Check we're still accurate after running the periodics
dest_usages = self._get_provider_usages(dest_rp_uuid)
source_usages = self._get_provider_usages(source_rp_uuid)
# and the target host allocation should be according to the new flavor
self.assertFlavorMatchesAllocation(self.flavor2, dest_usages)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, source_usages,
'The source host %s still has usages after the '
'resize has been confirmed' % source_hostname)
allocations = self._get_allocations_by_server_uuid(server['id'])
# and the server allocates only from the target host
self.assertEqual(1, len(allocations))
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor2, dest_allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def _resize_to_same_host_and_check_allocations(self, server, old_flavor,
new_flavor, rp_uuid):
# Resize the server to the same host and check usages in VERIFY_RESIZE
# state
self.flags(allow_resize_to_same_host=True)
resize_req = {
'resize': {
'flavorRef': new_flavor['id']
}
}
self.api.post_server_action(server['id'], resize_req)
self._wait_for_state_change(self.api, server, 'VERIFY_RESIZE')
usages = self._get_provider_usages(rp_uuid)
self.assertFlavorsMatchAllocation(old_flavor, new_flavor, usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[rp_uuid]['resources']
self.assertFlavorsMatchAllocation(old_flavor, new_flavor, allocation)
# We've resized to the same host and have doubled allocations for both
# the old and new flavor on the same host. Run the periodic on the
# compute to see if it tramples on what the scheduler did.
self._run_periodics()
usages = self._get_provider_usages(rp_uuid)
self.assertFlavorsMatchAllocation(old_flavor, new_flavor, usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[rp_uuid]['resources']
self.assertFlavorsMatchAllocation(old_flavor, new_flavor, allocation)
def test_resize_revert_same_host(self):
# make sure that the test only uses a single host
compute2_service_id = self.admin_api.get_services(
host=self.compute2.host, binary='nova-compute')[0]['id']
self.admin_api.put_service(compute2_service_id, {'status': 'disabled'})
hostname = self.compute1.manager.host
rp_uuid = self._get_provider_uuid_by_host(hostname)
server = self._boot_and_check_allocations(self.flavor2, hostname)
self._resize_to_same_host_and_check_allocations(
server, self.flavor2, self.flavor3, rp_uuid)
# Revert the resize and check the usages
post = {'revertResize': None}
self.api.post_server_action(server['id'], post)
self._wait_for_state_change(self.api, server, 'ACTIVE')
self._run_periodics()
# after revert only allocations due to the old flavor should remain
usages = self._get_provider_usages(rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor2, usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor2, allocation)
self._delete_and_check_allocations(server, rp_uuid, rp_uuid)
def test_resize_confirm_same_host(self):
# make sure that the test only uses a single host
compute2_service_id = self.admin_api.get_services(
host=self.compute2.host, binary='nova-compute')[0]['id']
self.admin_api.put_service(compute2_service_id, {'status': 'disabled'})
hostname = self.compute1.manager.host
rp_uuid = self._get_provider_uuid_by_host(hostname)
server = self._boot_and_check_allocations(self.flavor2, hostname)
self._resize_to_same_host_and_check_allocations(
server, self.flavor2, self.flavor3, rp_uuid)
# Confirm the resize and check the usages
post = {'confirmResize': None}
self.api.post_server_action(
server['id'], post, check_response_status=[204])
self._wait_for_state_change(self.api, server, 'ACTIVE')
self._run_periodics()
# after confirm only allocations due to the new flavor should remain
usages = self._get_provider_usages(rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor3, usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor3, allocation)
self._delete_and_check_allocations(server, rp_uuid, rp_uuid)
def test_resize_not_enough_resource(self):
# Try to resize to a flavor that requests more VCPU than what the
# compute hosts has available and expect the resize to fail
flavor_body = {'flavor':
{'name': 'test_too_big_flavor',
'ram': 1024,
'vcpus': fake.MediumFakeDriver.vcpus + 1,
'disk': 20,
}}
big_flavor = self.api.post_flavor(flavor_body)
dest_hostname = self.compute2.host
source_hostname = self._other_hostname(dest_hostname)
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
self.flags(allow_resize_to_same_host=False)
resize_req = {
'resize': {
'flavorRef': big_flavor['id']
}
}
resp = self.api.post_server_action(
server['id'], resize_req, check_response_status=[400])
self.assertEqual(
resp['badRequest']['message'],
"No valid host was found. No valid host found for resize")
server = self.admin_api.get_server(server['id'])
self.assertEqual(source_hostname, server['OS-EXT-SRV-ATTR:host'])
# only the source host shall have usages after the failed resize
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
# Check that the other provider has no usage
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0}, dest_usages)
# Check that the server only allocates resource from the host it is
# booted on
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def test_evacuate(self):
source_hostname = self.compute1.host
dest_hostname = self.compute2.host
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
source_compute_id = self.admin_api.get_services(
host=source_hostname, binary='nova-compute')[0]['id']
self.compute1.stop()
# force it down to avoid waiting for the service group to time out
self.admin_api.put_service(
source_compute_id, {'forced_down': 'true'})
# evacuate the server
post = {'evacuate': {}}
self.api.post_server_action(
server['id'], post)
expected_params = {'OS-EXT-SRV-ATTR:host': dest_hostname,
'status': 'ACTIVE'}
server = self._wait_for_server_parameter(self.api, server,
expected_params)
# Expect to have allocation and usages on both computes as the
# source compute is still down
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(2, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, source_allocation)
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, dest_allocation)
# start up the source compute
self.compute1.start()
self.admin_api.put_service(
source_compute_id, {'forced_down': 'false'})
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0},
source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, dest_allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def test_evacuate_forced_host(self):
"""Evacuating a server with a forced host bypasses the scheduler
which means conductor has to create the allocations against the
destination node. This test recreates the scenarios and asserts
the allocations on the source and destination nodes are as expected.
"""
source_hostname = self.compute1.host
dest_hostname = self.compute2.host
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
source_compute_id = self.admin_api.get_services(
host=source_hostname, binary='nova-compute')[0]['id']
self.compute1.stop()
# force it down to avoid waiting for the service group to time out
self.admin_api.put_service(
source_compute_id, {'forced_down': 'true'})
# evacuate the server and force the destination host which bypasses
# the scheduler
post = {
'evacuate': {
'host': dest_hostname,
'force': True
}
}
self.api.post_server_action(server['id'], post)
expected_params = {'OS-EXT-SRV-ATTR:host': dest_hostname,
'status': 'ACTIVE'}
server = self._wait_for_server_parameter(self.api, server,
expected_params)
# Run the periodics to show those don't modify allocations.
self._run_periodics()
# Expect to have allocation and usages on both computes as the
# source compute is still down
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(2, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, source_allocation)
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, dest_allocation)
# start up the source compute
self.compute1.start()
self.admin_api.put_service(
source_compute_id, {'forced_down': 'false'})
# Run the periodics again to show they don't change anything.
self._run_periodics()
# When the source node starts up, the instance has moved so the
# ResourceTracker should cleanup allocations for the source node.
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertEqual(
{'VCPU': 0, 'MEMORY_MB': 0, 'DISK_GB': 0}, source_usages)
# The usages/allocations should still exist on the destination node
# after the source node starts back up.
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, dest_allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def test_evacuate_claim_on_dest_fails(self):
"""Tests that the allocations on the destination node are cleaned up
when the rebuild move claim fails due to insufficient resources.
"""
source_hostname = self.compute1.host
dest_hostname = self.compute2.host
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
source_compute_id = self.admin_api.get_services(
host=source_hostname, binary='nova-compute')[0]['id']
self.compute1.stop()
# force it down to avoid waiting for the service group to time out
self.admin_api.put_service(
source_compute_id, {'forced_down': 'true'})
# NOTE(mriedem): This isn't great, and I'd like to fake out the driver
# to make the claim fail, by doing something like returning a too high
# memory_mb overhead, but the limits dict passed to the claim is empty
# so the claim test is considering it as unlimited and never actually
# performs a claim test. Configuring the scheduler to use the RamFilter
# to get the memory_mb limit at least seems like it should work but
# it doesn't appear to for some reason...
def fake_move_claim(*args, **kwargs):
# Assert the destination node allocation exists.
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
raise exception.ComputeResourcesUnavailable(
reason='test_evacuate_claim_on_dest_fails')
with mock.patch('nova.compute.claims.MoveClaim', fake_move_claim):
# evacuate the server
self.api.post_server_action(server['id'], {'evacuate': {}})
# the migration will fail on the dest node and the instance will
# go into error state
server = self._wait_for_state_change(self.api, server, 'ERROR')
# Run the periodics to show those don't modify allocations.
self._run_periodics()
# The allocation should still exist on the source node since it's
# still down, and the allocation on the destination node should be
# cleaned up.
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(
{'vcpus': 0, 'ram': 0, 'disk': 0}, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, source_allocation)
# start up the source compute
self.compute1.start()
self.admin_api.put_service(
source_compute_id, {'forced_down': 'false'})
# Run the periodics again to show they don't change anything.
self._run_periodics()
# The source compute shouldn't have cleaned up the allocation for
# itself since the instance didn't move.
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, source_allocation)
def test_evacuate_rebuild_on_dest_fails(self):
"""Tests that the allocations on the destination node are cleaned up
by the drop_move_claim in the ResourceTracker automatically when
the claim is made but the actual rebuild via the driver fails.
"""
source_hostname = self.compute1.host
dest_hostname = self.compute2.host
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
source_compute_id = self.admin_api.get_services(
host=source_hostname, binary='nova-compute')[0]['id']
self.compute1.stop()
# force it down to avoid waiting for the service group to time out
self.admin_api.put_service(
source_compute_id, {'forced_down': 'true'})
def fake_rebuild(*args, **kwargs):
# Assert the destination node allocation exists.
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
raise test.TestingException('test_evacuate_rebuild_on_dest_fails')
with mock.patch.object(
self.compute2.driver, 'rebuild', fake_rebuild):
# evacuate the server
self.api.post_server_action(server['id'], {'evacuate': {}})
# the migration will fail on the dest node and the instance will
# go into error state
server = self._wait_for_state_change(self.api, server, 'ERROR')
# Run the periodics to show those don't modify allocations.
self._run_periodics()
# The allocation should still exist on the source node since it's
# still down, and the allocation on the destination node should be
# cleaned up.
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(
{'vcpus': 0, 'ram': 0, 'disk': 0}, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, source_allocation)
# start up the source compute
self.compute1.start()
self.admin_api.put_service(
source_compute_id, {'forced_down': 'false'})
# Run the periodics again to show they don't change anything.
self._run_periodics()
# The source compute shouldn't have cleaned up the allocation for
# itself since the instance didn't move.
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
source_allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, source_allocation)
def _boot_then_shelve_and_check_allocations(self, hostname, rp_uuid):
# avoid automatic shelve offloading
self.flags(shelved_offload_time=-1)
server = self._boot_and_check_allocations(
self.flavor1, hostname)
req = {
'shelve': {}
}
self.api.post_server_action(server['id'], req)
self._wait_for_state_change(self.api, server, 'SHELVED')
# the host should maintain the existing allocation for this instance
# while the instance is shelved
source_usages = self._get_provider_usages(rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
# Check that the server only allocates resource from the host it is
# booted on
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, allocation)
return server
def test_shelve_unshelve(self):
source_hostname = self.compute1.host
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
server = self._boot_then_shelve_and_check_allocations(
source_hostname, source_rp_uuid)
req = {
'unshelve': {}
}
self.api.post_server_action(server['id'], req)
self._wait_for_state_change(self.api, server, 'ACTIVE')
# the host should have resource usage as the instance is ACTIVE
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
# Check that the server only allocates resource from the host it is
# booted on
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[source_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, source_rp_uuid)
def _shelve_offload_and_check_allocations(self, server, source_rp_uuid):
req = {
'shelveOffload': {}
}
self.api.post_server_action(server['id'], req)
self._wait_for_state_change(self.api, server, 'SHELVED_OFFLOADED')
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertEqual({'VCPU': 0,
'MEMORY_MB': 0,
'DISK_GB': 0},
source_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(0, len(allocations))
def test_shelve_offload_unshelve_diff_host(self):
source_hostname = self.compute1.host
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
server = self._boot_then_shelve_and_check_allocations(
source_hostname, source_rp_uuid)
self._shelve_offload_and_check_allocations(server, source_rp_uuid)
# unshelve after shelve offload will do scheduling. this test case
# wants to test the scenario when the scheduler select a different host
# to ushelve the instance. So we disable the original host.
source_service_id = self.admin_api.get_services(
host=source_hostname, binary='nova-compute')[0]['id']
self.admin_api.put_service(source_service_id, {'status': 'disabled'})
req = {
'unshelve': {}
}
self.api.post_server_action(server['id'], req)
server = self._wait_for_state_change(self.api, server, 'ACTIVE')
# unshelving an offloaded instance will call the scheduler so the
# instance might end up on a different host
current_hostname = server['OS-EXT-SRV-ATTR:host']
self.assertEqual(current_hostname, self._other_hostname(
source_hostname))
# the host running the instance should have resource usage
current_rp_uuid = self._get_provider_uuid_by_host(current_hostname)
current_usages = self._get_provider_usages(current_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, current_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[current_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, source_rp_uuid)
def test_shelve_offload_unshelve_same_host(self):
source_hostname = self.compute1.host
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
server = self._boot_then_shelve_and_check_allocations(
source_hostname, source_rp_uuid)
self._shelve_offload_and_check_allocations(server, source_rp_uuid)
# unshelve after shelve offload will do scheduling. this test case
# wants to test the scenario when the scheduler select the same host
# to ushelve the instance. So we disable the other host.
source_service_id = self.admin_api.get_services(
host=self._other_hostname(source_hostname),
binary='nova-compute')[0]['id']
self.admin_api.put_service(source_service_id, {'status': 'disabled'})
req = {
'unshelve': {}
}
self.api.post_server_action(server['id'], req)
server = self._wait_for_state_change(self.api, server, 'ACTIVE')
# unshelving an offloaded instance will call the scheduler so the
# instance might end up on a different host
current_hostname = server['OS-EXT-SRV-ATTR:host']
self.assertEqual(current_hostname, source_hostname)
# the host running the instance should have resource usage
current_rp_uuid = self._get_provider_uuid_by_host(current_hostname)
current_usages = self._get_provider_usages(current_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, current_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
allocation = allocations[current_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, source_rp_uuid)
def test_live_migrate_force(self):
source_hostname = self.compute1.host
dest_hostname = self.compute2.host
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
post = {
'os-migrateLive': {
'host': dest_hostname,
'block_migration': True,
'force': True,
}
}
self.api.post_server_action(server['id'], post)
self._wait_for_server_parameter(self.api, server,
{'OS-EXT-SRV-ATTR:host': dest_hostname,
'status': 'ACTIVE'})
self._run_periodics()
source_usages = self._get_provider_usages(source_rp_uuid)
# NOTE(danms): There should be no usage for the source
self.assertFlavorMatchesAllocation(
{'ram': 0, 'disk': 0, 'vcpus': 0}, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
# the server has an allocation on only the dest node
self.assertEqual(1, len(allocations))
self.assertNotIn(source_rp_uuid, allocations)
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, dest_allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def test_live_migrate(self):
source_hostname = self.compute1.host
dest_hostname = self.compute2.host
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
post = {
'os-migrateLive': {
'host': dest_hostname,
'block_migration': True,
}
}
self.api.post_server_action(server['id'], post)
self._wait_for_server_parameter(self.api, server,
{'OS-EXT-SRV-ATTR:host': dest_hostname,
'status': 'ACTIVE'})
self._run_periodics()
source_usages = self._get_provider_usages(source_rp_uuid)
# NOTE(danms): There should be no usage for the source
self.assertFlavorMatchesAllocation(
{'ram': 0, 'disk': 0, 'vcpus': 0}, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
self.assertEqual(1, len(allocations))
self.assertNotIn(source_rp_uuid, allocations)
dest_allocation = allocations[dest_rp_uuid]['resources']
self.assertFlavorMatchesAllocation(self.flavor1, dest_allocation)
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def _wait_for_migration_status(self, server, expected_status):
"""Waits for a migration record with the given status to be found
for the given server, else the test fails. The migration record, if
found, is returned.
"""
for attempt in range(10):
migrations = self.api.api_get('/os-migrations').body['migrations']
for migration in migrations:
if (migration['instance_uuid'] == server['id'] and
migration['status'].lower() ==
expected_status.lower()):
return migration
time.sleep(0.5)
self.fail('Timed out waiting for migration with status "%s" for '
'instance: %s' % (expected_status, server['id']))
def test_live_migrate_pre_check_fails(self):
"""Tests the case that the LiveMigrationTask in conductor has
called the scheduler which picked a host and created allocations
against it in Placement, but then when the conductor task calls
check_can_live_migrate_destination on the destination compute it
fails. The allocations on the destination compute node should be
cleaned up before the conductor task asks the scheduler for another
host to try the live migration.
"""
self.failed_hostname = None
source_hostname = self.compute1.host
dest_hostname = self.compute2.host
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
def fake_check_can_live_migrate_destination(
context, instance, src_compute_info, dst_compute_info,
block_migration=False, disk_over_commit=False):
self.failed_hostname = dst_compute_info['host']
raise exception.MigrationPreCheckError(
reason='test_live_migrate_pre_check_fails')
with mock.patch('nova.virt.fake.FakeDriver.'
'check_can_live_migrate_destination',
side_effect=fake_check_can_live_migrate_destination):
post = {
'os-migrateLive': {
'host': dest_hostname,
'block_migration': True,
}
}
self.api.post_server_action(server['id'], post)
# As there are only two computes and we failed to live migrate to
# the only other destination host, the LiveMigrationTask raises
# MaxRetriesExceeded back to the conductor manager which handles it
# generically and sets the instance back to ACTIVE status and
# clears the task_state. The migration record status is set to
# 'error', so that's what we need to look for to know when this
# is done.
migration = self._wait_for_migration_status(server, 'error')
# The source_compute should be set on the migration record, but the
# destination shouldn't be as we never made it to one.
self.assertEqual(source_hostname, migration['source_compute'])
self.assertIsNone(migration['dest_compute'])
# Make sure the destination host (the only other host) is the failed
# host.
self.assertEqual(dest_hostname, self.failed_hostname)
source_usages = self._get_provider_usages(source_rp_uuid)
# Since the instance didn't move, assert the allocations are still
# on the source node.
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
dest_usages = self._get_provider_usages(dest_rp_uuid)
# Assert the allocations, created by the scheduler, are cleaned up
# after the migration pre-check error happens.
self.assertFlavorMatchesAllocation(
{'vcpus': 0, 'ram': 0, 'disk': 0}, dest_usages)
allocations = self._get_allocations_by_server_uuid(server['id'])
# There should only be 1 allocation for the instance on the source node
self.assertEqual(1, len(allocations))
self.assertIn(source_rp_uuid, allocations)
self.assertFlavorMatchesAllocation(
self.flavor1, allocations[source_rp_uuid]['resources'])
self._delete_and_check_allocations(
server, source_rp_uuid, dest_rp_uuid)
def _wait_for_prep_resize_fail_completion(self, server, expected_action):
"""Polls instance action events for the given instance and action
until it finds the compute_prep_resize action event with an error
result.
"""
completion_event = None
for attempt in range(10):
actions = self.api.get_instance_actions(server['id'])
# Look for the migrate action.
for action in actions:
if action['action'] == expected_action:
events = (
self.api.api_get(
'/servers/%s/os-instance-actions/%s' %
(server['id'], action['request_id'])
).body['instanceAction']['events'])
# Look for the compute_prep_resize being in error state.
for event in events:
if (event['event'] == 'compute_prep_resize' and
event['result'] is not None and
event['result'].lower() == 'error'):
completion_event = event
# Break out of the events loop.
break
if completion_event:
# Break out of the actions loop.
break
# We didn't find the completion event yet, so wait a bit.
time.sleep(0.5)
if completion_event is None:
self.fail('Timed out waiting for compute_prep_resize failure '
'event. Current instance actions: %s' % actions)
def test_rescheduling_when_migrating_instance(self):
"""Tests that allocations are removed from the destination node by
the compute service when a cold migrate / resize fails and a reschedule
request is sent back to conductor.
"""
source_hostname = self.compute1.manager.host
server = self._boot_and_check_allocations(
self.flavor1, source_hostname)
def fake_prep_resize(*args, **kwargs):
raise test.TestingException('Simulated _prep_resize failure.')
# Yes this isn't great in a functional test, but it's simple.
self.stub_out('nova.compute.manager.ComputeManager._prep_resize',
fake_prep_resize)
# Now migrate the server which is going to fail on the destination.
self.api.post_server_action(server['id'], {'migrate': None})
self._wait_for_prep_resize_fail_completion(server, 'migrate')
dest_hostname = self._other_hostname(source_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
failed_usages = self._get_provider_usages(dest_rp_uuid)
# Expects no allocation records on the failed host.
self.assertFlavorMatchesAllocation(
{'vcpus': 0, 'ram': 0, 'disk': 0}, failed_usages)
# Ensure the allocation records still exist on the source host.
source_rp_uuid = self._get_provider_uuid_by_host(source_hostname)
source_usages = self._get_provider_usages(source_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
def test_resize_to_same_host_prep_resize_fails(self):
"""Tests that when we resize to the same host and resize fails in
the prep_resize method, we cleanup the allocations before rescheduling.
"""
# make sure that the test only uses a single host
compute2_service_id = self.admin_api.get_services(
host=self.compute2.host, binary='nova-compute')[0]['id']
self.admin_api.put_service(compute2_service_id, {'status': 'disabled'})
hostname = self.compute1.manager.host
rp_uuid = self._get_provider_uuid_by_host(hostname)
server = self._boot_and_check_allocations(self.flavor1, hostname)
def fake_prep_resize(*args, **kwargs):
# Ensure the allocations are doubled now before we fail.
usages = self._get_provider_usages(rp_uuid)
self.assertFlavorsMatchAllocation(
self.flavor1, self.flavor2, usages)
raise test.TestingException('Simulated _prep_resize failure.')
# Yes this isn't great in a functional test, but it's simple.
self.stub_out('nova.compute.manager.ComputeManager._prep_resize',
fake_prep_resize)
self.flags(allow_resize_to_same_host=True)
resize_req = {
'resize': {
'flavorRef': self.flavor2['id']
}
}
self.api.post_server_action(server['id'], resize_req)
self._wait_for_prep_resize_fail_completion(server, 'resize')
# Ensure the allocation records still exist on the host.
source_rp_uuid = self._get_provider_uuid_by_host(hostname)
source_usages = self._get_provider_usages(source_rp_uuid)
# The new_flavor should have been subtracted from the doubled
# allocation which just leaves us with the original flavor.
self.assertFlavorMatchesAllocation(self.flavor1, source_usages)
class ServerRescheduleTests(ProviderUsageBaseTestCase):
"""Tests server create scenarios which trigger a reschedule during
a server build and validates that allocations in Placement
are properly cleaned up.
Uses a fake virt driver that fails the build on the first attempt.
"""
compute_driver = 'fake.FakeRescheduleDriver'
def setUp(self):
super(ServerRescheduleTests, self).setUp()
fake.set_nodes(['host1'])
self.flags(host='host1')
self.compute1 = self.start_service('compute', host='host1')
# NOTE(sbauza): Make sure the FakeDriver returns a different nodename
# for the second compute node.
fake.set_nodes(['host2'])
self.addCleanup(fake.restore_nodes)
self.flags(host='host2')
self.compute2 = self.start_service('compute', host='host2')
flavors = self.api.get_flavors()
self.flavor1 = flavors[0]
def _other_hostname(self, host):
other_host = {'host1': 'host2',
'host2': 'host1'}
return other_host[host]
def test_rescheduling_when_booting_instance(self):
"""Tests that allocations, created by the scheduler, are cleaned
from the source node when the build fails on that node and is
rescheduled to another node.
"""
server_req = self._build_minimal_create_server_request(
self.api, 'some-server', flavor_id=self.flavor1['id'],
image_uuid='155d900f-4e14-4e4c-a73d-069cbf4541e6',
networks=[])
created_server = self.api.post_server({'server': server_req})
server = self._wait_for_state_change(
self.api, created_server, 'ACTIVE')
dest_hostname = server['OS-EXT-SRV-ATTR:host']
failed_hostname = self._other_hostname(dest_hostname)
LOG.info('failed on %s', failed_hostname)
LOG.info('booting on %s', dest_hostname)
failed_rp_uuid = self._get_provider_uuid_by_host(failed_hostname)
dest_rp_uuid = self._get_provider_uuid_by_host(dest_hostname)
failed_usages = self._get_provider_usages(failed_rp_uuid)
# Expects no allocation records on the failed host.
self.assertFlavorMatchesAllocation(
{'vcpus': 0, 'ram': 0, 'disk': 0}, failed_usages)
# Ensure the allocation records on the destination host.
dest_usages = self._get_provider_usages(dest_rp_uuid)
self.assertFlavorMatchesAllocation(self.flavor1, dest_usages)
class ServerBuildAbortTests(ProviderUsageBaseTestCase):
"""Tests server create scenarios which trigger a build abort during
a server build and validates that allocations in Placement
are properly cleaned up.
Uses a fake virt driver that aborts the build on the first attempt.
"""
compute_driver = 'fake.FakeBuildAbortDriver'
def setUp(self):
super(ServerBuildAbortTests, self).setUp()
# We only need one compute service/host/node for these tests.
fake.set_nodes(['host1'])
self.flags(host='host1')
self.compute1 = self.start_service('compute', host='host1')
flavors = self.api.get_flavors()
self.flavor1 = flavors[0]
def test_abort_when_booting_instance(self):
"""Tests that allocations, created by the scheduler, are cleaned
from the source node when the build is aborted on that node.
"""
server_req = self._build_minimal_create_server_request(
self.api, 'some-server', flavor_id=self.flavor1['id'],
image_uuid='155d900f-4e14-4e4c-a73d-069cbf4541e6',
networks=[])
created_server = self.api.post_server({'server': server_req})
self._wait_for_state_change(self.api, created_server, 'ERROR')
failed_hostname = self.compute1.manager.host
failed_rp_uuid = self._get_provider_uuid_by_host(failed_hostname)
failed_usages = self._get_provider_usages(failed_rp_uuid)
# Expects no allocation records on the failed host.
self.assertFlavorMatchesAllocation(
{'vcpus': 0, 'ram': 0, 'disk': 0}, failed_usages)
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