diff --git a/tempest/tests/lib/services/volume/v2/__init__.py b/tempest/tests/lib/services/volume/v2/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/tempest/tests/lib/services/volume/v2/__init__.py
+++ /dev/null
diff --git a/tempest/tests/lib/services/volume/v2/test_backups_client.py b/tempest/tests/lib/services/volume/v2/test_backups_client.py
deleted file mode 100644
index 14e5fb0..0000000
--- a/tempest/tests/lib/services/volume/v2/test_backups_client.py
+++ /dev/null
@@ -1,117 +0,0 @@
-# Copyright 2017 FiberHome Telecommunication Technologies CO.,LTD
-# 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.services.volume.v2 import backups_client
-from tempest.tests.lib import fake_auth_provider
-from tempest.tests.lib.services import base
-
-
-class TestBackupsClient(base.BaseServiceTest):
-
-    FAKE_BACKUP_LIST = {
-        "backups": [
-            {
-                "id": "2ef47aee-8844-490c-804d-2a8efe561c65",
-                "links": [
-                    {
-                        "href": "fake-url-1",
-                        "rel": "self"
-                    },
-                    {
-                        "href": "fake-url-2",
-                        "rel": "bookmark"
-                    }
-                ],
-                "name": "backup001"
-            }
-        ]
-    }
-
-    FAKE_BACKUP_LIST_WITH_DETAIL = {
-        "backups": [
-            {
-                "availability_zone": "az1",
-                "container": "volumebackups",
-                "created_at": "2013-04-02T10:35:27.000000",
-                "description": None,
-                "fail_reason": None,
-                "id": "2ef47aee-8844-490c-804d-2a8efe561c65",
-                "links": [
-                    {
-                        "href": "fake-url-1",
-                        "rel": "self"
-                    },
-                    {
-                        "href": "fake-url-2",
-                        "rel": "bookmark"
-                    }
-                ],
-                "name": "backup001",
-                "object_count": 22,
-                "size": 1,
-                "status": "available",
-                "volume_id": "e5185058-943a-4cb4-96d9-72c184c337d6",
-                "is_incremental": True,
-                "has_dependent_backups": False
-            }
-        ]
-    }
-
-    def setUp(self):
-        super(TestBackupsClient, self).setUp()
-        fake_auth = fake_auth_provider.FakeAuthProvider()
-        self.client = backups_client.BackupsClient(fake_auth,
-                                                   'volume',
-                                                   'regionOne')
-
-    def _test_list_backups(self, detail=False, mock_args='backups',
-                           bytes_body=False, **params):
-        if detail:
-            resp_body = self.FAKE_BACKUP_LIST_WITH_DETAIL
-        else:
-            resp_body = self.FAKE_BACKUP_LIST
-        self.check_service_client_function(
-            self.client.list_backups,
-            'tempest.lib.common.rest_client.RestClient.get',
-            resp_body,
-            to_utf=bytes_body,
-            mock_args=[mock_args],
-            detail=detail,
-            **params)
-
-    def test_list_backups_with_str_body(self):
-        self._test_list_backups()
-
-    def test_list_backups_with_bytes_body(self):
-        self._test_list_backups(bytes_body=True)
-
-    def test_list_backups_with_detail_with_str_body(self):
-        mock_args = "backups/detail"
-        self._test_list_backups(detail=True, mock_args=mock_args)
-
-    def test_list_backups_with_detail_with_bytes_body(self):
-        mock_args = "backups/detail"
-        self._test_list_backups(detail=True, mock_args=mock_args,
-                                bytes_body=True)
-
-    def test_list_backups_with_params(self):
-        # Run the test separately for each param, to avoid assertion error
-        # resulting from randomized params order.
-        mock_args = 'backups?sort_key=name'
-        self._test_list_backups(mock_args=mock_args, sort_key='name')
-
-        mock_args = 'backups/detail?limit=10'
-        self._test_list_backups(detail=True, mock_args=mock_args,
-                                bytes_body=True, limit=10)
diff --git a/tempest/tests/lib/services/volume/v2/test_availability_zone_client.py b/tempest/tests/lib/services/volume/v3/test_availability_zone_client.py
similarity index 96%
rename from tempest/tests/lib/services/volume/v2/test_availability_zone_client.py
rename to tempest/tests/lib/services/volume/v3/test_availability_zone_client.py
index 770565c..4827326 100644
--- a/tempest/tests/lib/services/volume/v2/test_availability_zone_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_availability_zone_client.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.lib.services.volume.v2 import availability_zone_client
+from tempest.lib.services.volume.v3 import availability_zone_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v3/test_backups_client.py b/tempest/tests/lib/services/volume/v3/test_backups_client.py
index f1ce987..5412064 100644
--- a/tempest/tests/lib/services/volume/v3/test_backups_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_backups_client.py
@@ -20,6 +20,55 @@
 
 class TestBackupsClient(base.BaseServiceTest):
 
+    FAKE_BACKUP_LIST = {
+        "backups": [
+            {
+                "id": "2ef47aee-8844-490c-804d-2a8efe561c65",
+                "links": [
+                    {
+                        "href": "fake-url-1",
+                        "rel": "self"
+                    },
+                    {
+                        "href": "fake-url-2",
+                        "rel": "bookmark"
+                    }
+                ],
+                "name": "backup001"
+            }
+        ]
+    }
+
+    FAKE_BACKUP_LIST_WITH_DETAIL = {
+        "backups": [
+            {
+                "availability_zone": "az1",
+                "container": "volumebackups",
+                "created_at": "2013-04-02T10:35:27.000000",
+                "description": None,
+                "fail_reason": None,
+                "id": "2ef47aee-8844-490c-804d-2a8efe561c65",
+                "links": [
+                    {
+                        "href": "fake-url-1",
+                        "rel": "self"
+                    },
+                    {
+                        "href": "fake-url-2",
+                        "rel": "bookmark"
+                    }
+                ],
+                "name": "backup001",
+                "object_count": 22,
+                "size": 1,
+                "status": "available",
+                "volume_id": "e5185058-943a-4cb4-96d9-72c184c337d6",
+                "is_incremental": True,
+                "has_dependent_backups": False
+            }
+        ]
+    }
+
     FAKE_BACKUP_UPDATE = {
         "backup": {
             "id": "4c65c15f-a5c5-464b-b92a-90e4c04636a7",
@@ -35,6 +84,46 @@
                                                    'volume',
                                                    'regionOne')
 
+    def _test_list_backups(self, detail=False, mock_args='backups',
+                           bytes_body=False, **params):
+        if detail:
+            resp_body = self.FAKE_BACKUP_LIST_WITH_DETAIL
+        else:
+            resp_body = self.FAKE_BACKUP_LIST
+        self.check_service_client_function(
+            self.client.list_backups,
+            'tempest.lib.common.rest_client.RestClient.get',
+            resp_body,
+            to_utf=bytes_body,
+            mock_args=[mock_args],
+            detail=detail,
+            **params)
+
+    def test_list_backups_with_str_body(self):
+        self._test_list_backups()
+
+    def test_list_backups_with_bytes_body(self):
+        self._test_list_backups(bytes_body=True)
+
+    def test_list_backups_with_detail_with_str_body(self):
+        mock_args = "backups/detail"
+        self._test_list_backups(detail=True, mock_args=mock_args)
+
+    def test_list_backups_with_detail_with_bytes_body(self):
+        mock_args = "backups/detail"
+        self._test_list_backups(detail=True, mock_args=mock_args,
+                                bytes_body=True)
+
+    def test_list_backups_with_params(self):
+        # Run the test separately for each param, to avoid assertion error
+        # resulting from randomized params order.
+        mock_args = 'backups?sort_key=name'
+        self._test_list_backups(mock_args=mock_args, sort_key='name')
+
+        mock_args = 'backups/detail?limit=10'
+        self._test_list_backups(detail=True, mock_args=mock_args,
+                                bytes_body=True, limit=10)
+
     def _test_update_backup(self, bytes_body=False):
         self.check_service_client_function(
             self.client.update_backup,
diff --git a/tempest/tests/lib/services/volume/v2/test_capabilities_client.py b/tempest/tests/lib/services/volume/v3/test_capabilities_client.py
similarity index 97%
rename from tempest/tests/lib/services/volume/v2/test_capabilities_client.py
rename to tempest/tests/lib/services/volume/v3/test_capabilities_client.py
index 3d3f1e1..7efe1ff 100644
--- a/tempest/tests/lib/services/volume/v2/test_capabilities_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_capabilities_client.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.lib.services.volume.v2 import capabilities_client
+from tempest.lib.services.volume.v3 import capabilities_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_encryption_types_client.py b/tempest/tests/lib/services/volume/v3/test_encryption_types_client.py
similarity index 98%
rename from tempest/tests/lib/services/volume/v2/test_encryption_types_client.py
rename to tempest/tests/lib/services/volume/v3/test_encryption_types_client.py
index 8de9fb4..c788181 100644
--- a/tempest/tests/lib/services/volume/v2/test_encryption_types_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_encryption_types_client.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from tempest.lib.services.volume.v2 import encryption_types_client
+from tempest.lib.services.volume.v3 import encryption_types_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_extensions_client.py b/tempest/tests/lib/services/volume/v3/test_extensions_client.py
similarity index 97%
rename from tempest/tests/lib/services/volume/v2/test_extensions_client.py
rename to tempest/tests/lib/services/volume/v3/test_extensions_client.py
index c0ee421..a8bbffd 100644
--- a/tempest/tests/lib/services/volume/v2/test_extensions_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_extensions_client.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.lib.services.volume.v2 import extensions_client
+from tempest.lib.services.volume.v3 import extensions_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_hosts_client.py b/tempest/tests/lib/services/volume/v3/test_hosts_client.py
similarity index 98%
rename from tempest/tests/lib/services/volume/v2/test_hosts_client.py
rename to tempest/tests/lib/services/volume/v3/test_hosts_client.py
index e107910..67ae4fd 100644
--- a/tempest/tests/lib/services/volume/v2/test_hosts_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_hosts_client.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.lib.services.volume.v2 import hosts_client
+from tempest.lib.services.volume.v3 import hosts_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_limits_client.py b/tempest/tests/lib/services/volume/v3/test_limits_client.py
similarity index 97%
rename from tempest/tests/lib/services/volume/v2/test_limits_client.py
rename to tempest/tests/lib/services/volume/v3/test_limits_client.py
index 202054c..f94fbe1 100644
--- a/tempest/tests/lib/services/volume/v2/test_limits_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_limits_client.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.lib.services.volume.v2 import limits_client
+from tempest.lib.services.volume.v3 import limits_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_quota_classes_client.py b/tempest/tests/lib/services/volume/v3/test_quota_classes_client.py
similarity index 97%
rename from tempest/tests/lib/services/volume/v2/test_quota_classes_client.py
rename to tempest/tests/lib/services/volume/v3/test_quota_classes_client.py
index e715fcc..6190733 100644
--- a/tempest/tests/lib/services/volume/v2/test_quota_classes_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_quota_classes_client.py
@@ -15,7 +15,7 @@
 
 import copy
 
-from tempest.lib.services.volume.v2 import quota_classes_client
+from tempest.lib.services.volume.v3 import quota_classes_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_quotas_client.py b/tempest/tests/lib/services/volume/v3/test_quotas_client.py
similarity index 97%
rename from tempest/tests/lib/services/volume/v2/test_quotas_client.py
rename to tempest/tests/lib/services/volume/v3/test_quotas_client.py
index 6384350..aa5d251 100644
--- a/tempest/tests/lib/services/volume/v2/test_quotas_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_quotas_client.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from tempest.lib.services.volume.v2 import quotas_client
+from tempest.lib.services.volume.v3 import quotas_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_scheduler_stats_client.py b/tempest/tests/lib/services/volume/v3/test_scheduler_stats_client.py
similarity index 97%
rename from tempest/tests/lib/services/volume/v2/test_scheduler_stats_client.py
rename to tempest/tests/lib/services/volume/v3/test_scheduler_stats_client.py
index 8a5f25f..e0f5566 100644
--- a/tempest/tests/lib/services/volume/v2/test_scheduler_stats_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_scheduler_stats_client.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.lib.services.volume.v2 import scheduler_stats_client
+from tempest.lib.services.volume.v3 import scheduler_stats_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_snapshot_manage_client.py b/tempest/tests/lib/services/volume/v3/test_snapshot_manage_client.py
similarity index 94%
rename from tempest/tests/lib/services/volume/v2/test_snapshot_manage_client.py
rename to tempest/tests/lib/services/volume/v3/test_snapshot_manage_client.py
index e03a8eb..1b88020 100644
--- a/tempest/tests/lib/services/volume/v2/test_snapshot_manage_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_snapshot_manage_client.py
@@ -17,9 +17,7 @@
 
 from oslo_serialization import jsonutils as json
 
-from tempest.lib.services.volume.v2 import snapshot_manage_client
-from tempest.lib.services.volume.v3 import snapshot_manage_client \
-    as snapshot_manage_clientv3
+from tempest.lib.services.volume.v3 import snapshot_manage_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
@@ -65,7 +63,7 @@
 
         # NOTE: Use sort_keys for json.dumps so that the expected and actual
         # payloads are guaranteed to be identical for mock_args assert check.
-        with mock.patch.object(snapshot_manage_clientv3.json,
+        with mock.patch.object(snapshot_manage_client.json,
                                'dumps') as mock_dumps:
             mock_dumps.side_effect = lambda d: json_dumps(d, sort_keys=True)
 
diff --git a/tempest/tests/lib/services/volume/v2/test_snapshots_client.py b/tempest/tests/lib/services/volume/v3/test_snapshots_client.py
similarity index 99%
rename from tempest/tests/lib/services/volume/v2/test_snapshots_client.py
rename to tempest/tests/lib/services/volume/v3/test_snapshots_client.py
index c9f57a0..2efd2e6 100644
--- a/tempest/tests/lib/services/volume/v2/test_snapshots_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_snapshots_client.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from tempest.lib.services.volume.v2 import snapshots_client
+from tempest.lib.services.volume.v3 import snapshots_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
diff --git a/tempest/tests/lib/services/volume/v2/test_transfers_client.py b/tempest/tests/lib/services/volume/v3/test_transfers_client.py
similarity index 95%
rename from tempest/tests/lib/services/volume/v2/test_transfers_client.py
rename to tempest/tests/lib/services/volume/v3/test_transfers_client.py
index 8e7c6f4..d631fe7 100644
--- a/tempest/tests/lib/services/volume/v2/test_transfers_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_transfers_client.py
@@ -18,9 +18,7 @@
 import mock
 from oslo_serialization import jsonutils as json
 
-from tempest.lib.services.volume.v2 import transfers_client
-from tempest.lib.services.volume.v3 import transfers_client \
-    as transfers_clientv3
+from tempest.lib.services.volume.v3 import transfers_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
@@ -65,7 +63,7 @@
 
         # NOTE: Use sort_keys for json.dumps so that the expected and actual
         # payloads are guaranteed to be identical for mock_args assert check.
-        with mock.patch.object(transfers_clientv3.json, 'dumps') as mock_dumps:
+        with mock.patch.object(transfers_client.json, 'dumps') as mock_dumps:
             mock_dumps.side_effect = lambda d: json_dumps(d, sort_keys=True)
 
             self.check_service_client_function(
@@ -86,7 +84,7 @@
 
         # NOTE: Use sort_keys for json.dumps so that the expected and actual
         # payloads are guaranteed to be identical for mock_args assert check.
-        with mock.patch.object(transfers_clientv3.json, 'dumps') as mock_dumps:
+        with mock.patch.object(transfers_client.json, 'dumps') as mock_dumps:
             mock_dumps.side_effect = lambda d: json_dumps(d, sort_keys=True)
 
             self.check_service_client_function(
diff --git a/tempest/tests/lib/services/volume/v2/test_volume_manage_client.py b/tempest/tests/lib/services/volume/v3/test_volume_manage_client.py
similarity index 94%
rename from tempest/tests/lib/services/volume/v2/test_volume_manage_client.py
rename to tempest/tests/lib/services/volume/v3/test_volume_manage_client.py
index 0fb66bb..902f027 100644
--- a/tempest/tests/lib/services/volume/v2/test_volume_manage_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_volume_manage_client.py
@@ -17,9 +17,7 @@
 
 from oslo_serialization import jsonutils as json
 
-from tempest.lib.services.volume.v2 import volume_manage_client
-from tempest.lib.services.volume.v3 import volume_manage_client \
-    as volume_manage_clientv3
+from tempest.lib.services.volume.v3 import volume_manage_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
 
@@ -93,7 +91,7 @@
 
         # NOTE: Use sort_keys for json.dumps so that the expected and actual
         # payloads are guaranteed to be identical for mock_args assert check.
-        with mock.patch.object(volume_manage_clientv3.json,
+        with mock.patch.object(volume_manage_client.json,
                                'dumps') as mock_dumps:
             mock_dumps.side_effect = lambda d: json_dumps(d, sort_keys=True)