diff --git a/README.rst b/README.rst
index 3c0463b..f1dac1c 100644
--- a/README.rst
+++ b/README.rst
@@ -92,18 +92,18 @@
    be done using the :ref:`tempest_run` command. This can be done by either
    running::
 
-     $ tempest run
+    $ tempest run
 
    from the Tempest workspace directory. Or you can use the ``--workspace``
    argument to run in the workspace you created regarless of your current
    working directory. For example::
 
-     $ tempest run --workspace cloud-01
+    $ tempest run --workspace cloud-01
 
    There is also the option to use testr directly, or any `testr`_ based test
    runner, like `ostestr`_. For example, from the workspace dir run::
 
-     $ ostestr --regex '(?!.*\[.*\bslow\b.*\])(^tempest\.(api|scenario))'
+    $ ostestr --regex '(?!.*\[.*\bslow\b.*\])(^tempest\.(api|scenario))'
 
    will run the same set of tests as the default gate jobs.
 
@@ -161,9 +161,9 @@
 of the configuration.
 
 You can generate a new sample tempest.conf file, run the following
-command from the top level of the Tempest directory:
+command from the top level of the Tempest directory::
 
-  tox -egenconfig
+    $ tox -egenconfig
 
 The most important pieces that are needed are the user ids, openstack
 endpoint, and basic flavors and images needed to run tests.
@@ -257,11 +257,11 @@
 and run the tests or use tox to do the same. Tox also contains several existing
 job configurations. For example::
 
-   $ tox -efull
+    $ tox -efull
 
 which will run the same set of tests as the OpenStack gate. (it's exactly how
 the gate invokes Tempest) Or::
 
-  $ tox -esmoke
+    $ tox -esmoke
 
 to run the tests tagged as smoke.
diff --git a/doc/source/configuration.rst b/doc/source/configuration.rst
index fd9ad05..18269bf 100644
--- a/doc/source/configuration.rst
+++ b/doc/source/configuration.rst
@@ -95,7 +95,7 @@
 accounts will be assigned a role on domain configured in
 ``default_credentials_domain_name``. This will make the accounts provisioned
 usable in a cloud where domain scoped tokens are required by keystone for
-admin operations. Note that the the initial pre-provision admin accounts,
+admin operations. Note that the initial pre-provision admin accounts,
 configured in tempest.conf, must have a role on the same domain as well, for
 Dynamic Credentials to work.
 
@@ -151,7 +151,7 @@
 ``admin_domain_scope`` as ``default_credentials_domain_name`` are configured
 properly in tempest.conf.
 
-Pre-Provisioned Credentials are also know as accounts.yaml or accounts file.
+Pre-Provisioned Credentials are also known as accounts.yaml or accounts file.
 
 Compute
 -------
diff --git a/doc/source/plugin.rst b/doc/source/plugin.rst
index d34023f..285ad5d 100644
--- a/doc/source/plugin.rst
+++ b/doc/source/plugin.rst
@@ -213,7 +213,7 @@
 * **client_names**: Name of the classes that implement service clients in the
   service clients module.
 
-Example usage of the the service clients in tests::
+Example usage of the service clients in tests::
 
    # my_creds is instance of tempest.lib.auth.Credentials
    # identity_uri is v2 or v3 depending on the configuration
diff --git a/releasenotes/source/index.rst b/releasenotes/source/index.rst
index 2c22408..0ec0e94 100644
--- a/releasenotes/source/index.rst
+++ b/releasenotes/source/index.rst
@@ -5,10 +5,10 @@
  .. toctree::
     :maxdepth: 1
 
+    unreleased
     v12.0.0
     v11.0.0
     v10.0.0
-    unreleased
 
 Indices and tables
 ==================
diff --git a/requirements.txt b/requirements.txt
index 81567d7..4655b9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,6 @@
 testrepository>=0.0.18 # Apache-2.0/BSD
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.config>=3.14.0 # Apache-2.0
-oslo.i18n>=2.1.0 # Apache-2.0
 oslo.log>=3.11.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.utils>=3.16.0 # Apache-2.0
@@ -18,8 +17,10 @@
 fixtures>=3.0.0 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 PyYAML>=3.1.0 # MIT
+python-subunit>=0.0.18 # Apache-2.0/BSD
 stevedore>=1.16.0 # Apache-2.0
 PrettyTable<0.8,>=0.7 # BSD
 os-testr>=0.7.0 # Apache-2.0
 urllib3>=1.15.1 # MIT
 debtcollector>=1.2.0 # Apache-2.0
+unittest2  # BSD
diff --git a/tempest/api/compute/admin/test_migrations.py b/tempest/api/compute/admin/test_migrations.py
index 6113c04..62dbfe4 100644
--- a/tempest/api/compute/admin/test_migrations.py
+++ b/tempest/api/compute/admin/test_migrations.py
@@ -31,6 +31,8 @@
         super(MigrationsAdminTest, cls).setup_clients()
         cls.client = cls.os_adm.migrations_client
         cls.flavors_admin_client = cls.os_adm.flavors_client
+        cls.admin_hosts_client = cls.os_adm.hosts_client
+        cls.admin_servers_client = cls.os_adm.servers_client
 
     @test.idempotent_id('75c0b83d-72a0-4cf8-a153-631e83e7d53f')
     def test_list_migrations(self):
@@ -103,3 +105,28 @@
 
         server = self.servers_client.show_server(server['id'])['server']
         self.assertEqual(flavor['id'], server['flavor']['id'])
+
+    @test.idempotent_id('4bf0be52-3b6f-4746-9a27-3143636fe30d')
+    @testtools.skipUnless(CONF.compute_feature_enabled.cold_migration,
+                          'Cold migration not available.')
+    def test_cold_migration(self):
+        if CONF.compute.min_compute_nodes < 2:
+            msg = "Less than 2 compute nodes, skipping multinode tests."
+            raise self.skipException(msg)
+
+        server = self.create_test_server(wait_until="ACTIVE")
+        src_host = self.admin_servers_client.show_server(
+            server['id'])['server']['OS-EXT-SRV-ATTR:host']
+
+        self.admin_servers_client.migrate_server(server['id'])
+
+        waiters.wait_for_server_status(self.servers_client,
+                                       server['id'], 'VERIFY_RESIZE')
+
+        self.servers_client.confirm_resize_server(server['id'])
+        waiters.wait_for_server_status(self.servers_client,
+                                       server['id'], 'ACTIVE')
+        dst_host = self.admin_servers_client.show_server(
+            server['id'])['server']['OS-EXT-SRV-ATTR:host']
+
+        self.assertNotEqual(src_host, dst_host)
diff --git a/tempest/api/compute/admin/test_servers.py b/tempest/api/compute/admin/test_servers.py
index aabb40c..c9ffcca 100755
--- a/tempest/api/compute/admin/test_servers.py
+++ b/tempest/api/compute/admin/test_servers.py
@@ -102,14 +102,18 @@
         params = {'tenant_id': tenant_id}
         body = self.client.list_servers(detail=True, **params)
         servers = body['servers']
-        self.assertEqual([], servers)
+        servers_name = map(lambda x: x['name'], servers)
+        self.assertNotIn(self.s1_name, servers_name)
+        self.assertNotIn(self.s2_name, servers_name)
 
-        # List the admin tenant which has no servers
+        # List the admin tenant shouldn't get servers created by other tenants
         admin_tenant_id = self.client.tenant_id
         params = {'all_tenants': '', 'tenant_id': admin_tenant_id}
         body = self.client.list_servers(detail=True, **params)
         servers = body['servers']
-        self.assertEqual([], servers)
+        servers_name = map(lambda x: x['name'], servers)
+        self.assertNotIn(self.s1_name, servers_name)
+        self.assertNotIn(self.s2_name, servers_name)
 
     @test.idempotent_id('86c7a8f7-50cf-43a9-9bac-5b985317134f')
     def test_list_servers_filter_by_exist_host(self):
diff --git a/tempest/api/compute/servers/test_multiple_create.py b/tempest/api/compute/servers/test_multiple_create.py
index eb1beb1..4dd26af 100644
--- a/tempest/api/compute/servers/test_multiple_create.py
+++ b/tempest/api/compute/servers/test_multiple_create.py
@@ -21,16 +21,10 @@
 class MultipleCreateTestJSON(base.BaseV2ComputeTest):
     _name = 'multiple-create-test'
 
-    def _generate_name(self):
-        return data_utils.rand_name(self._name)
-
-    def _create_multiple_servers(self, name=None, wait_until=None, **kwargs):
-        # NOTE: This is the right way to create_multiple servers and manage to
-        # get the created servers into the servers list to be cleaned up after
-        # all.
-        kwargs['name'] = name if name else self._generate_name()
-        if wait_until:
-            kwargs['wait_until'] = wait_until
+    def _create_multiple_servers(self, **kwargs):
+        # This is the right way to create_multiple servers and manage to get
+        # the created servers into the servers list to be cleaned up after all.
+        kwargs['name'] = kwargs.get('name', data_utils.rand_name(self._name))
         body = self.create_test_server(**kwargs)
 
         return body
diff --git a/tempest/api/compute/servers/test_multiple_create_negative.py b/tempest/api/compute/servers/test_multiple_create_negative.py
index e5b4f46..c4dbe23 100644
--- a/tempest/api/compute/servers/test_multiple_create_negative.py
+++ b/tempest/api/compute/servers/test_multiple_create_negative.py
@@ -22,13 +22,10 @@
 class MultipleCreateNegativeTestJSON(base.BaseV2ComputeTest):
     _name = 'multiple-create-test'
 
-    def _generate_name(self):
-        return data_utils.rand_name(self._name)
-
-    def _create_multiple_servers(self, name=None, wait_until=None, **kwargs):
+    def _create_multiple_servers(self, **kwargs):
         # This is the right way to create_multiple servers and manage to get
         # the created servers into the servers list to be cleaned up after all.
-        kwargs['name'] = kwargs.get('name', self._generate_name())
+        kwargs['name'] = kwargs.get('name', data_utils.rand_name(self._name))
         body = self.create_test_server(**kwargs)
 
         return body
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index da7085f..c48169f 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -165,7 +165,7 @@
     """Testing volume with shelved instance.
 
     This test checks the attaching and detaching volumes from
-    a shelved or shelved ofload instance.
+    a shelved or shelved offload instance.
     """
 
     min_microversion = '2.20'
diff --git a/tempest/api/image/v2/test_images_metadefs_resource_types.py b/tempest/api/image/v2/test_images_metadefs_resource_types.py
index a5143a1..3dd432b 100644
--- a/tempest/api/image/v2/test_images_metadefs_resource_types.py
+++ b/tempest/api/image/v2/test_images_metadefs_resource_types.py
@@ -18,7 +18,7 @@
 
 
 class MetadataResourceTypesTest(base.BaseV2ImageTest):
-    """Test the Metadata definition ressource types basic functionality"""
+    """Test the Metadata definition resource types basic functionality"""
 
     @test.idempotent_id('6f358a4e-5ef0-11e6-a795-080027d0d606')
     def test_basic_meta_def_resource_type_association(self):
@@ -34,7 +34,7 @@
         # NOTE(raiesmh08): Here intentionally I have not added addcleanup
         # method for resource type dissociation because its a metadata add and
         # being cleaned as soon as namespace is cleaned at test case level.
-        # When namespace cleans, resource type associaion will automatically
+        # When namespace cleans, resource type association will automatically
         # clean without any error or dependency.
 
         # List resource type associations and validate creation
diff --git a/tempest/api/network/test_ports.py b/tempest/api/network/test_ports.py
index caf7f14..e5972a9 100644
--- a/tempest/api/network/test_ports.py
+++ b/tempest/api/network/test_ports.py
@@ -16,6 +16,7 @@
 import socket
 
 import netaddr
+import testtools
 
 from tempest.api.network import base
 from tempest.api.network import base_security_groups as sec_base
@@ -308,11 +309,17 @@
             self.assertIn(security_group, port_show['security_groups'])
 
     @test.idempotent_id('58091b66-4ff4-4cc1-a549-05d60c7acd1a')
+    @testtools.skipUnless(
+        test.is_extension_enabled('security-group', 'network'),
+        'security-group extension not enabled.')
     def test_update_port_with_security_group_and_extra_attributes(self):
         self._update_port_with_security_groups(
             [data_utils.rand_name('secgroup')])
 
     @test.idempotent_id('edf6766d-3d40-4621-bc6e-2521a44c257d')
+    @testtools.skipUnless(
+        test.is_extension_enabled('security-group', 'network'),
+        'security-group extension not enabled.')
     def test_update_port_with_two_security_groups_and_extra_attributes(self):
         self._update_port_with_security_groups(
             [data_utils.rand_name('secgroup'),
@@ -337,6 +344,9 @@
 
     @test.attr(type='smoke')
     @test.idempotent_id('4179dcb9-1382-4ced-84fe-1b91c54f5735')
+    @testtools.skipUnless(
+        test.is_extension_enabled('security-group', 'network'),
+        'security-group extension not enabled.')
     def test_create_port_with_no_securitygroups(self):
         network = self.create_network()
         self.addCleanup(self.networks_client.delete_network, network['id'])
diff --git a/tempest/api/object_storage/test_account_services.py b/tempest/api/object_storage/test_account_services.py
index a0c0a5f..33e5852 100644
--- a/tempest/api/object_storage/test_account_services.py
+++ b/tempest/api/object_storage/test_account_services.py
@@ -79,7 +79,7 @@
         # headers is checked without custom matcher.
         #
         # As the expected response is 204 No Content, Content-Length presence
-        # is not checked here intensionally. According to RFC 7230 a server
+        # is not checked here intentionally. According to RFC 7230 a server
         # MUST NOT send the header in such responses. Thus, clients should not
         # depend on this header. However, the standard does not require them
         # to validate the server's behavior. We leverage that to not refuse
diff --git a/tempest/api/volume/test_volume_metadata.py b/tempest/api/volume/test_volume_metadata.py
index e529538..ee1744d 100644
--- a/tempest/api/volume/test_volume_metadata.py
+++ b/tempest/api/volume/test_volume_metadata.py
@@ -26,11 +26,10 @@
         super(VolumesV2MetadataTest, cls).resource_setup()
         # Create a volume
         cls.volume = cls.create_volume()
-        cls.volume_id = cls.volume['id']
 
     def tearDown(self):
         # Update the metadata to {}
-        self.volumes_client.update_volume_metadata(self.volume_id, {})
+        self.volumes_client.update_volume_metadata(self.volume['id'], {})
         super(VolumesV2MetadataTest, self).tearDown()
 
     @test.idempotent_id('6f5b125b-f664-44bf-910f-751591fe5769')
@@ -41,17 +40,17 @@
                     "key3": "value3",
                     "key4": "<value&special_chars>"}
 
-        body = self.volumes_client.create_volume_metadata(self.volume_id,
+        body = self.volumes_client.create_volume_metadata(self.volume['id'],
                                                           metadata)['metadata']
         # Get the metadata of the volume
         body = self.volumes_client.show_volume_metadata(
-            self.volume_id)['metadata']
+            self.volume['id'])['metadata']
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
         # Delete one item metadata of the volume
         self.volumes_client.delete_volume_metadata_item(
-            self.volume_id, "key1")
+            self.volume['id'], "key1")
         body = self.volumes_client.show_volume_metadata(
-            self.volume_id)['metadata']
+            self.volume['id'])['metadata']
         self.assertNotIn("key1", body)
         del metadata["key1"]
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
@@ -68,17 +67,17 @@
 
         # Create metadata for the volume
         body = self.volumes_client.create_volume_metadata(
-            self.volume_id, metadata)['metadata']
+            self.volume['id'], metadata)['metadata']
         # Get the metadata of the volume
         body = self.volumes_client.show_volume_metadata(
-            self.volume_id)['metadata']
+            self.volume['id'])['metadata']
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
         # Update metadata
         body = self.volumes_client.update_volume_metadata(
-            self.volume_id, update)['metadata']
+            self.volume['id'], update)['metadata']
         # Get the metadata of the volume
         body = self.volumes_client.show_volume_metadata(
-            self.volume_id)['metadata']
+            self.volume['id'])['metadata']
         self.assertEqual(update, body)
 
     @test.idempotent_id('862261c5-8df4-475a-8c21-946e50e36a20')
@@ -93,14 +92,14 @@
                   "key3": "value3_update"}
         # Create metadata for the volume
         body = self.volumes_client.create_volume_metadata(
-            self.volume_id, metadata)['metadata']
+            self.volume['id'], metadata)['metadata']
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
         # Update metadata item
         body = self.volumes_client.update_volume_metadata_item(
-            self.volume_id, "key3", update_item)['meta']
+            self.volume['id'], "key3", update_item)['meta']
         # Get the metadata of the volume
         body = self.volumes_client.show_volume_metadata(
-            self.volume_id)['metadata']
+            self.volume['id'])['metadata']
         self.assertThat(body.items(), matchers.ContainsAll(expect.items()))
 
 
diff --git a/tempest/clients.py b/tempest/clients.py
index b13b809..edc34bd 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -117,7 +117,7 @@
                     configuration[service_for_config] = (
                         config.service_client_config(service_for_config))
             except lib_exc.UnknownServiceClient:
-                LOG.warn(
+                LOG.warning(
                     'Could not load configuration for service %s' % service)
 
         return configuration
diff --git a/tempest/cmd/init.py b/tempest/cmd/init.py
index ba1f1fa..f577d9b 100644
--- a/tempest/cmd/init.py
+++ b/tempest/cmd/init.py
@@ -93,7 +93,7 @@
             testr_conf_file.write(testr_conf)
 
     def get_configparser(self, conf_path):
-        config_parse = moves.configparser.SafeConfigParser()
+        config_parse = moves.configparser.ConfigParser()
         config_parse.optionxform = str
         # get any existing values if a config file already exists
         if os.path.isfile(conf_path):
diff --git a/tempest/cmd/run.py b/tempest/cmd/run.py
index fef836c..236953c 100644
--- a/tempest/cmd/run.py
+++ b/tempest/cmd/run.py
@@ -264,8 +264,8 @@
 
             run_thread = threading.Thread(target=run_argv_thread)
             run_thread.start()
-            returncodes['subunit-trace'] = subunit_trace.trace(subunit_r,
-                                                               sys.stdout)
+            returncodes['subunit-trace'] = subunit_trace.trace(
+                subunit_r, sys.stdout, post_fails=True, print_failures=True)
             run_thread.join()
             subunit_r.close()
             # python version of pipefail
diff --git a/tempest/cmd/verify_tempest_config.py b/tempest/cmd/verify_tempest_config.py
index a7bb7fd..b2e72c5 100644
--- a/tempest/cmd/verify_tempest_config.py
+++ b/tempest/cmd/verify_tempest_config.py
@@ -372,7 +372,7 @@
 
     if update:
         conf_file = _get_config_file()
-        CONF_PARSER = moves.configparser.SafeConfigParser()
+        CONF_PARSER = moves.configparser.ConfigParser()
         CONF_PARSER.optionxform = str
         CONF_PARSER.readfp(conf_file)
 
diff --git a/tempest/config.py b/tempest/config.py
index f6c89ae..b6fca7e 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -339,6 +339,10 @@
     cfg.BoolOpt('suspend',
                 default=True,
                 help="Does the test environment support suspend/resume?"),
+    cfg.BoolOpt('cold_migration',
+                default=True,
+                help="Does the test environment support cold migration "
+                     "available?"),
     cfg.BoolOpt('live_migration',
                 default=True,
                 help="Does the test environment support live migration "
diff --git a/tempest/lib/cmd/check_uuid.py b/tempest/lib/cmd/check_uuid.py
index be3aa49..1239ac5 100755
--- a/tempest/lib/cmd/check_uuid.py
+++ b/tempest/lib/cmd/check_uuid.py
@@ -69,7 +69,8 @@
         lines[line_no - 1] = ''.join(('{%s:s}' % patch_id, lines[line_no - 1]))
         self.source_files[filename] = self._quote('\n').join(lines)
 
-    def _save_changes(self, filename, source):
+    @staticmethod
+    def _save_changes(filename, source):
         print('%s fixed' % filename)
         with open(filename, 'w') as f:
             f.write(source)
diff --git a/tempest/scenario/test_minimum_basic.py b/tempest/scenario/test_minimum_basic.py
index 34a65cb..3ac6759 100644
--- a/tempest/scenario/test_minimum_basic.py
+++ b/tempest/scenario/test_minimum_basic.py
@@ -149,10 +149,18 @@
 
         # delete the floating IP, this should refresh the server addresses
         self.compute_floating_ips_client.delete_floating_ip(floating_ip['id'])
-        server = self.servers_client.show_server(server['id'])['server']
-        address = self._get_floating_ip_in_server_addresses(
-            floating_ip, server)
-        self.assertIsNone(
-            address,
-            "Floating IP '%s' should not be in server addresses: %s" %
-            (floating_ip['ip'], server['addresses']))
+
+        def is_floating_ip_detached_from_server():
+            server_info = self.servers_client.show_server(
+                server['id'])['server']
+            address = self._get_floating_ip_in_server_addresses(
+                floating_ip, server_info)
+            return (not address)
+
+        if not test_utils.call_until_true(
+            is_floating_ip_detached_from_server,
+            CONF.compute.build_timeout,
+            CONF.compute.build_interval):
+            msg = ("Floating IP '%s' should not be in server addresses: %s" %
+                   (floating_ip['ip'], server['addresses']))
+            raise exceptions.TimeoutException(msg)
diff --git a/tempest/services/volume/v1/json/admin/__init__.py b/tempest/services/volume/v1/json/admin/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/tempest/services/volume/v1/json/admin/__init__.py
+++ /dev/null
diff --git a/tempest/services/volume/v2/json/admin/__init__.py b/tempest/services/volume/v2/json/admin/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/tempest/services/volume/v2/json/admin/__init__.py
+++ /dev/null
diff --git a/test-requirements.txt b/test-requirements.txt
index 04c3d6d..567cf20 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@
 # needed for doc build
 sphinx!=1.3b1,<1.3,>=1.2.1 # BSD
 python-subunit>=0.0.18 # Apache-2.0/BSD
-oslosphinx!=3.4.0,>=2.5.0 # Apache-2.0
+oslosphinx>=4.7.0 # Apache-2.0
 reno>=1.8.0 # Apache2
 mock>=2.0 # BSD
 coverage>=3.6 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index 57ecdbd..7096e60 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = pep8,py35,py34,py27
+envlist = pep8,py35,py34,py27,pip-check-reqs
 minversion = 2.3.1
 skipsdist = True
 
@@ -158,3 +158,14 @@
 
 [testenv:releasenotes]
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
+
+[testenv:pip-check-reqs]
+# Do not install test-requirements as that will pollute the virtualenv for
+# determining missing packages.
+# This also means that pip-check-reqs must be installed separately, outside
+# of the requirements.txt files
+deps = pip_check_reqs
+       -r{toxinidir}/requirements.txt
+commands=
+    pip-extra-reqs -d --ignore-file=tempest/tests/* tempest
+    pip-missing-reqs -d --ignore-file=tempest/tests/* tempest