diff --git a/tempest/api/compute/servers/test_servers.py b/tempest/api/compute/servers/test_servers.py
index 76d65dd..1e3e966 100644
--- a/tempest/api/compute/servers/test_servers.py
+++ b/tempest/api/compute/servers/test_servers.py
@@ -209,7 +209,8 @@
                                        server['id'], 'ACTIVE')
 
         # Check rebuild API response schema
-        self.servers_client.rebuild_server(server['id'], self.image_ref_alt)
+        self.servers_client.rebuild_server(
+            server['id'], CONF.compute.certified_image_ref)
         waiters.wait_for_server_status(self.servers_client,
                                        server['id'], 'ACTIVE')
 
diff --git a/tempest/api/volume/admin/test_user_messages.py b/tempest/api/volume/admin/test_user_messages.py
index 9907497..8048017 100644
--- a/tempest/api/volume/admin/test_user_messages.py
+++ b/tempest/api/volume/admin/test_user_messages.py
@@ -20,18 +20,6 @@
 
 CONF = config.CONF
 
-MESSAGE_KEYS = [
-    'created_at',
-    'event_id',
-    'guaranteed_until',
-    'id',
-    'message_level',
-    'request_id',
-    'resource_type',
-    'resource_uuid',
-    'user_message',
-    'links']
-
 
 class UserMessagesTest(base.BaseVolumeAdminTest):
     _api_version = 3
@@ -66,18 +54,11 @@
         message_id = self._create_user_message()
         self.addCleanup(self.messages_client.delete_message, message_id)
 
-        # show message
-        message = self.messages_client.show_message(message_id)['message']
-        for key in MESSAGE_KEYS:
-            self.assertIn(key, message.keys(), 'Missing expected key %s' % key)
+        # show message, check response schema
+        self.messages_client.show_message(message_id)
 
-        # list messages
-        messages = self.messages_client.list_messages()['messages']
-        self.assertIsInstance(messages, list)
-        for message in messages:
-            for key in MESSAGE_KEYS:
-                self.assertIn(key, message.keys(),
-                              'Missing expected key %s' % key)
+        # list messages, check response schema
+        self.messages_client.list_messages()
 
     @decorators.idempotent_id('c6eb6901-cdcc-490f-b735-4fe251842aed')
     def test_delete_message(self):
diff --git a/tempest/api/volume/admin/test_volume_retype.py b/tempest/api/volume/admin/test_volume_retype.py
index 9136139..18e0b9b 100644
--- a/tempest/api/volume/admin/test_volume_retype.py
+++ b/tempest/api/volume/admin/test_volume_retype.py
@@ -94,7 +94,7 @@
         super(VolumeRetypeTest, cls).skip_checks()
 
         if not CONF.volume_feature_enabled.multi_backend:
-            raise cls.skipException("Cinder multi-backend feature disabled.")
+            raise cls.skipException("Cinder multi-backend feature disabled")
 
         if len(set(CONF.volume.backend_names)) < 2:
             raise cls.skipException("Requires at least two different "
diff --git a/tempest/api/volume/test_volumes_list.py b/tempest/api/volume/test_volumes_list.py
index d5358ab..2345698 100644
--- a/tempest/api/volume/test_volumes_list.py
+++ b/tempest/api/volume/test_volumes_list.py
@@ -17,7 +17,7 @@
 import operator
 import random
 
-from six.moves.urllib import parse
+from six.moves.urllib.parse import urlparse
 from testtools import matchers
 
 from tempest.api.volume import base
@@ -333,7 +333,19 @@
             # If the current iteration is from a 'next' link, check that the
             # absolute url is the same as the one used for this request
             if next:
-                self.assertEqual(next, response.response['content-location'])
+                curr = response.response['content-location']
+                currparsed = urlparse(curr)
+                nextparsed = urlparse(next)
+                # Depending on the environment, certain fields are omitted
+                # from url (ie port). The fields to check are defined here.
+                fieldscheck = ['scheme', 'hostname', 'path', 'query', 'params',
+                               'fragment']
+                for field in fieldscheck:
+                    self.assertEqual(getattr(currparsed, field),
+                                     getattr(nextparsed, field),
+                                     'Incorrect link to next page. URLs do '
+                                     'not match at %s:\n%s\n%s' % (field, curr,
+                                                                   next))
 
             # Get next from response
             next = None
@@ -352,7 +364,7 @@
             # If we can follow to the next page, get params from url to make
             # request in the form of a relative URL
             if next:
-                params = parse.urlparse(next).query
+                params = urlparse(next).query
 
             # If cannot follow make sure it's because we have finished
             else:
diff --git a/tempest/lib/api_schema/response/volume/extensions.py b/tempest/lib/api_schema/response/volume/extensions.py
new file mode 100644
index 0000000..8dcb07d
--- /dev/null
+++ b/tempest/lib/api_schema/response/volume/extensions.py
@@ -0,0 +1,43 @@
+# Copyright 2018 ZTE Corporation.  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.
+
+from tempest.lib.api_schema.response.compute.v2_1 import parameter_types
+
+list_extensions = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'extensions': {
+                'type': 'array',
+                'items': {
+                    'type': 'object',
+                    'properties': {
+                        'updated': parameter_types.date_time,
+                        'description': {'type': 'string'},
+                        'links': {'type': 'array'},
+                        'namespace': {'type': 'string'},
+                        'alias': {'type': 'string'},
+                        'name': {'type': 'string'}
+                    },
+                    'additionalProperties': False,
+                    'required': ['updated', 'links', 'alias', 'name',
+                                 'description']
+                }
+            }
+        },
+        'additionalProperties': False,
+        'required': ['extensions'],
+    }
+}
diff --git a/tempest/lib/api_schema/response/volume/messages.py b/tempest/lib/api_schema/response/volume/messages.py
new file mode 100644
index 0000000..381f542
--- /dev/null
+++ b/tempest/lib/api_schema/response/volume/messages.py
@@ -0,0 +1,64 @@
+# Copyright 2018 ZTE Corporation.  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.
+
+from tempest.lib.api_schema.response.compute.v2_1 import parameter_types
+
+delete_message = {
+    'status_code': [204],
+}
+
+common_show_message = {
+    'type': 'object',
+    'properties': {
+        'request_id': {'type': 'string'},
+        'message_level': {'type': 'string'},
+        'links': parameter_types.links,
+        'event_id': {'type': 'string'},
+        'created_at': parameter_types.date_time,
+        'guaranteed_until': parameter_types.date_time,
+        'resource_uuid': {'type': 'string', 'format': 'uuid'},
+        'id': {'type': 'string', 'format': 'uuid'},
+        'resource_type': {'type': 'string'},
+        'user_message': {'type': 'string'}},
+    'additionalProperties': False,
+    'required': ['request_id', 'message_level', 'event_id', 'created_at',
+                 'id', 'user_message'],
+}
+
+show_message = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'message': common_show_message
+        },
+        'additionalProperties': False,
+        'required': ['message']
+    }
+}
+
+list_messages = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'messages': {
+                'type': 'array',
+                'items': common_show_message
+            },
+        },
+        'additionalProperties': False,
+        'required': ['messages']
+    }
+}
diff --git a/tempest/lib/api_schema/response/volume/services.py b/tempest/lib/api_schema/response/volume/services.py
new file mode 100644
index 0000000..70de878
--- /dev/null
+++ b/tempest/lib/api_schema/response/volume/services.py
@@ -0,0 +1,92 @@
+# Copyright 2018 ZTE Corporation.  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 copy
+
+from tempest.lib.api_schema.response.compute.v2_1 import parameter_types
+
+list_services = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'services': {
+                'type': 'array',
+                'items': {
+                    'type': 'object',
+                    'properties': {
+                        'binary': {'type': 'string'},
+                        'disabled_reason': {'type': ['string', 'null']},
+                        'host': {'type': 'string'},
+                        'state': {'enum': ['up', 'down']},
+                        'status': {'enum': ['enabled', 'disabled']},
+                        'frozen': {'type': 'boolean'},
+                        'updated_at': parameter_types.date_time,
+                        'zone': {'type': 'string'},
+                        # TODO(zhufl): cluster is added in 3.7, we should move
+                        # it to the 3.7 schema file when microversion is
+                        # supported in volume interfaces
+                        'cluster': {'type': 'string'},
+                        'replication_status': {'type': 'string'},
+                        'active_backend_id': {'type': ['string', 'null']},
+                        'backend_state': {'type': 'string'},
+                    },
+                    'additionalProperties': False,
+                    'required': ['binary', 'disabled_reason', 'host', 'state',
+                                 'status', 'updated_at', 'zone']
+                }
+            }
+        },
+        'additionalProperties': False,
+        'required': ['services']
+    }
+}
+
+enable_service = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'disabled': {'type': 'boolean'},
+            'status': {'enum': ['enabled', 'disabled']},
+            'host': {'type': 'string'},
+            'service': {'type': 'string'},
+            'binary': {'type': 'string'},
+            'disabled_reason': {'type': ['string', 'null']}
+        },
+        'additionalProperties': False,
+        'required': ['disabled', 'status', 'host', 'service',
+                     'binary', 'disabled_reason']
+    }
+}
+
+disable_service = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'disabled': {'type': 'boolean'},
+            'status': {'enum': ['enabled', 'disabled']},
+            'host': {'type': 'string'},
+            'service': {'type': 'string'},
+            'binary': {'type': 'string'},
+        },
+        'additionalProperties': False,
+        'required': ['disabled', 'status', 'host', 'service', 'binary']
+    }
+}
+
+disable_log_reason = copy.deepcopy(enable_service)
+
+freeze_host = {'status_code': [200]}
+thaw_host = {'status_code': [200]}
diff --git a/tempest/lib/services/volume/v3/extensions_client.py b/tempest/lib/services/volume/v3/extensions_client.py
index 45b7a56..f1fe5c9 100644
--- a/tempest/lib/services/volume/v3/extensions_client.py
+++ b/tempest/lib/services/volume/v3/extensions_client.py
@@ -15,6 +15,7 @@
 
 from oslo_serialization import jsonutils as json
 
+from tempest.lib.api_schema.response.volume import extensions as schema
 from tempest.lib.common import rest_client
 
 
@@ -25,5 +26,5 @@
         url = 'extensions'
         resp, body = self.get(url)
         body = json.loads(body)
-        self.expected_success(200, resp.status)
+        self.validate_response(schema.list_extensions, resp, body)
         return rest_client.ResponseBody(resp, body)
diff --git a/tempest/lib/services/volume/v3/messages_client.py b/tempest/lib/services/volume/v3/messages_client.py
index 47538cd..b770fac 100644
--- a/tempest/lib/services/volume/v3/messages_client.py
+++ b/tempest/lib/services/volume/v3/messages_client.py
@@ -15,6 +15,7 @@
 
 from oslo_serialization import jsonutils as json
 
+from tempest.lib.api_schema.response.volume import messages as schema
 from tempest.lib.common import rest_client
 from tempest.lib import exceptions as lib_exc
 from tempest.lib.services.volume import base_client
@@ -28,7 +29,7 @@
         url = 'messages/%s' % str(message_id)
         resp, body = self.get(url)
         body = json.loads(body)
-        self.expected_success(200, resp.status)
+        self.validate_response(schema.show_message, resp, body)
         return rest_client.ResponseBody(resp, body)
 
     def list_messages(self):
@@ -36,14 +37,14 @@
         url = 'messages'
         resp, body = self.get(url)
         body = json.loads(body)
-        self.expected_success(200, resp.status)
+        self.validate_response(schema.list_messages, resp, body)
         return rest_client.ResponseBody(resp, body)
 
     def delete_message(self, message_id):
         """Delete a single message."""
         url = 'messages/%s' % str(message_id)
         resp, body = self.delete(url)
-        self.expected_success(204, resp.status)
+        self.validate_response(schema.delete_message, resp, body)
         return rest_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
diff --git a/tempest/lib/services/volume/v3/services_client.py b/tempest/lib/services/volume/v3/services_client.py
index c4a511c..8bc82c9 100644
--- a/tempest/lib/services/volume/v3/services_client.py
+++ b/tempest/lib/services/volume/v3/services_client.py
@@ -16,6 +16,7 @@
 from oslo_serialization import jsonutils as json
 from six.moves.urllib import parse as urllib
 
+from tempest.lib.api_schema.response.volume import services as schema
 from tempest.lib.common import rest_client
 
 
@@ -35,7 +36,7 @@
 
         resp, body = self.get(url)
         body = json.loads(body)
-        self.expected_success(200, resp.status)
+        self.validate_response(schema.list_services, resp, body)
         return rest_client.ResponseBody(resp, body)
 
     def enable_service(self, **kwargs):
@@ -48,7 +49,7 @@
         put_body = json.dumps(kwargs)
         resp, body = self.put('os-services/enable', put_body)
         body = json.loads(body)
-        self.expected_success(200, resp.status)
+        self.validate_response(schema.enable_service, resp, body)
         return rest_client.ResponseBody(resp, body)
 
     def disable_service(self, **kwargs):
@@ -61,7 +62,7 @@
         put_body = json.dumps(kwargs)
         resp, body = self.put('os-services/disable', put_body)
         body = json.loads(body)
-        self.expected_success(200, resp.status)
+        self.validate_response(schema.disable_service, resp, body)
         return rest_client.ResponseBody(resp, body)
 
     def disable_log_reason(self, **kwargs):
@@ -74,7 +75,7 @@
         put_body = json.dumps(kwargs)
         resp, body = self.put('os-services/disable-log-reason', put_body)
         body = json.loads(body)
-        self.expected_success(200, resp.status)
+        self.validate_response(schema.disable_log_reason, resp, body)
         return rest_client.ResponseBody(resp, body)
 
     def freeze_host(self, **kwargs):
@@ -85,8 +86,8 @@
         https://docs.openstack.org/api-ref/block-storage/v3/#freeze-a-cinder-backend-host
         """
         put_body = json.dumps(kwargs)
-        resp, _ = self.put('os-services/freeze', put_body)
-        self.expected_success(200, resp.status)
+        resp, body = self.put('os-services/freeze', put_body)
+        self.validate_response(schema.freeze_host, resp, body)
         return rest_client.ResponseBody(resp)
 
     def thaw_host(self, **kwargs):
@@ -97,6 +98,6 @@
         https://docs.openstack.org/api-ref/block-storage/v3/#thaw-a-cinder-backend-host
         """
         put_body = json.dumps(kwargs)
-        resp, _ = self.put('os-services/thaw', put_body)
-        self.expected_success(200, resp.status)
+        resp, body = self.put('os-services/thaw', put_body)
+        self.validate_response(schema.thaw_host, resp, body)
         return rest_client.ResponseBody(resp)