diff --git a/releasenotes/notes/move-cinder-v3-to-lib-service-be3ba0c20753b594.yaml b/releasenotes/notes/move-cinder-v3-to-lib-service-be3ba0c20753b594.yaml
new file mode 100644
index 0000000..9223ba5
--- /dev/null
+++ b/releasenotes/notes/move-cinder-v3-to-lib-service-be3ba0c20753b594.yaml
@@ -0,0 +1,7 @@
+features:
+  - |
+    Define the Volume v3 service clients as library interfaces,
+    allowing other projects to use these modules as stable
+    libraries without maintenance changes.
+
+    * messages_client(v3)
diff --git a/tempest/api/compute/admin/test_aggregates.py b/tempest/api/compute/admin/test_aggregates.py
index 667d30b..1233a2b 100644
--- a/tempest/api/compute/admin/test_aggregates.py
+++ b/tempest/api/compute/admin/test_aggregates.py
@@ -18,9 +18,12 @@
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest import test
 
+CONF = config.CONF
+
 
 class AggregatesAdminTestJSON(base.BaseV2ComputeAdminTest):
     """Tests Aggregates API that require admin privileges"""
@@ -39,14 +42,22 @@
         cls.host = None
         hypers = cls.os_adm.hypervisor_client.list_hypervisors(
             detail=True)['hypervisors']
+
+        if CONF.compute.hypervisor_type:
+            hypers = [hyper for hyper in hypers
+                      if (hyper['hypervisor_type'] ==
+                          CONF.compute.hypervisor_type)]
+
         hosts_available = [hyper['service']['host'] for hyper in hypers
                            if (hyper['state'] == 'up' and
                                hyper['status'] == 'enabled')]
         if hosts_available:
             cls.host = hosts_available[0]
         else:
-            raise testtools.TestCase.failureException(
-                "no available compute node found")
+            msg = "no available compute node found"
+            if CONF.compute.hypervisor_type:
+                msg += " for hypervisor_type %s" % CONF.compute.hypervisor_type
+            raise testtools.TestCase.failureException(msg)
 
     @test.idempotent_id('0d148aa3-d54c-4317-aa8d-42040a475e20')
     def test_aggregate_create_delete(self):
diff --git a/tempest/api/compute/images/test_image_metadata_negative.py b/tempest/api/compute/images/test_image_metadata_negative.py
index 9cb9e03..489bfbc 100644
--- a/tempest/api/compute/images/test_image_metadata_negative.py
+++ b/tempest/api/compute/images/test_image_metadata_negative.py
@@ -19,11 +19,11 @@
 from tempest import test
 
 
-class ImagesMetadataTestJSON(base.BaseV2ComputeTest):
+class ImagesMetadataNegativeTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
     def setup_clients(cls):
-        super(ImagesMetadataTestJSON, cls).setup_clients()
+        super(ImagesMetadataNegativeTestJSON, cls).setup_clients()
         cls.client = cls.compute_images_client
 
     @test.attr(type=['negative'])
diff --git a/tempest/api/image/admin/v2/test_images.py b/tempest/api/image/admin/v2/test_images.py
index 9844a67..f22f321 100644
--- a/tempest/api/image/admin/v2/test_images.py
+++ b/tempest/api/image/admin/v2/test_images.py
@@ -34,11 +34,10 @@
     def test_admin_deactivate_reactivate_image(self):
         # Create image by non-admin tenant
         image_name = data_utils.rand_name('image')
-        image = self.client.create_image(name=image_name,
-                                         container_format='bare',
-                                         disk_format='raw',
-                                         visibility='private')
-        self.addCleanup(self.client.delete_image, image['id'])
+        image = self.create_image(name=image_name,
+                                  container_format='bare',
+                                  disk_format='raw',
+                                  visibility='private')
         # upload an image file
         content = data_utils.random_bytes()
         image_file = six.BytesIO(content)
diff --git a/tempest/api/image/v2/test_images.py b/tempest/api/image/v2/test_images.py
index 42912f0..7b9244b 100644
--- a/tempest/api/image/v2/test_images.py
+++ b/tempest/api/image/v2/test_images.py
@@ -83,10 +83,10 @@
         image_name = data_utils.rand_name('image')
         container_format = CONF.image.container_formats[0]
         disk_format = CONF.image.disk_formats[0]
-        image = self.client.create_image(name=image_name,
-                                         container_format=container_format,
-                                         disk_format=disk_format,
-                                         visibility='private')
+        image = self.create_image(name=image_name,
+                                  container_format=container_format,
+                                  disk_format=disk_format,
+                                  visibility='private')
         # Delete Image
         self.client.delete_image(image['id'])
         self.client.wait_for_resource_deletion(image['id'])
@@ -105,11 +105,10 @@
         image_name = data_utils.rand_name('image')
         container_format = CONF.image.container_formats[0]
         disk_format = CONF.image.disk_formats[0]
-        image = self.client.create_image(name=image_name,
-                                         container_format=container_format,
-                                         disk_format=disk_format,
-                                         visibility='private')
-        self.addCleanup(self.client.delete_image, image['id'])
+        image = self.create_image(name=image_name,
+                                  container_format=container_format,
+                                  disk_format=disk_format,
+                                  visibility='private')
         self.assertEqual('queued', image['status'])
 
         # Now try uploading an image file
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index 629926d..deefbeb 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -135,12 +135,12 @@
         super(BaseNetworkTest, cls).resource_cleanup()
 
     @classmethod
-    def create_network(cls, network_name=None):
+    def create_network(cls, network_name=None, **kwargs):
         """Wrapper utility that returns a test network."""
         network_name = network_name or data_utils.rand_name(
-            cls.__name__ + "-network")
+            cls.__name__ + '-test-network')
 
-        body = cls.networks_client.create_network(name=network_name)
+        body = cls.networks_client.create_network(name=network_name, **kwargs)
         network = body['network']
         cls.networks.append(network)
         return network
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index d2056c4..acac22b 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -209,12 +209,16 @@
     def test_show_network_fields(self):
         # Verify specific fields of a network
         fields = ['id', 'name']
+        if test.is_extension_enabled('net-mtu', 'network'):
+            fields.append('mtu')
         body = self.networks_client.show_network(self.network['id'],
                                                  fields=fields)
         network = body['network']
         self.assertEqual(sorted(network.keys()), sorted(fields))
         for field_name in fields:
             self.assertEqual(network[field_name], self.network[field_name])
+        self.assertNotIn('tenant_id', network)
+        self.assertNotIn('project_id', network)
 
     @test.attr(type='smoke')
     @test.idempotent_id('f7ffdeda-e200-4a7a-bcbe-05716e86bf43')
@@ -229,6 +233,8 @@
     def test_list_networks_fields(self):
         # Verify specific fields of the networks
         fields = ['id', 'name']
+        if test.is_extension_enabled('net-mtu', 'network'):
+            fields.append('mtu')
         body = self.networks_client.list_networks(fields=fields)
         networks = body['networks']
         self.assertNotEmpty(networks, "Network list returned is empty")
@@ -385,6 +391,21 @@
             network_id=CONF.network.public_network_id)
         self.assertEmpty(body['subnets'], "Public subnets visible")
 
+    @test.idempotent_id('c72c1c0c-2193-4aca-ccc4-b1442640bbbb')
+    @test.requires_ext(extension="standard-attr-description",
+                       service="network")
+    def test_create_update_network_description(self):
+        body = self.create_network(description='d1')
+        self.assertEqual('d1', body['description'])
+        net_id = body['id']
+        body = self.networks_client.list_networks(id=net_id)['networks'][0]
+        self.assertEqual('d1', body['description'])
+        body = self.networks_client.update_network(body['id'],
+                                                   description='d2')
+        self.assertEqual('d2', body['network']['description'])
+        body = self.networks_client.list_networks(id=net_id)['networks'][0]
+        self.assertEqual('d2', body['description'])
+
 
 class BulkNetworkOpsTest(base.BaseNetworkTest):
     """Tests the following operations in the Neutron API:
diff --git a/tempest/api/volume/admin/test_volumes_backup.py b/tempest/api/volume/admin/test_volumes_backup.py
index 73f1f8f..61d4ba7 100644
--- a/tempest/api/volume/admin/test_volumes_backup.py
+++ b/tempest/api/volume/admin/test_volumes_backup.py
@@ -33,12 +33,6 @@
         if not CONF.volume_feature_enabled.backup:
             raise cls.skipException("Cinder backup feature disabled")
 
-    @classmethod
-    def resource_setup(cls):
-        super(VolumesBackupsAdminV2Test, cls).resource_setup()
-
-        cls.volume = cls.create_volume()
-
     def _delete_backup(self, backup_id):
         self.admin_backups_client.delete_backup(backup_id)
         self.admin_backups_client.wait_for_resource_deletion(backup_id)
@@ -62,14 +56,13 @@
         Cinder allows exporting DB backup information through its API so it can
         be imported back in case of a DB loss.
         """
+        volume = self.create_volume()
         # Create backup
         backup_name = data_utils.rand_name(self.__class__.__name__ + '-Backup')
-        backup = (self.admin_backups_client.create_backup(
-            volume_id=self.volume['id'], name=backup_name)['backup'])
-        self.addCleanup(self._delete_backup, backup['id'])
+        backup = (self.create_backup(backup_client=self.admin_backups_client,
+                                     volume_id=volume['id'],
+                                     name=backup_name))
         self.assertEqual(backup_name, backup['name'])
-        waiters.wait_for_backup_status(self.admin_backups_client,
-                                       backup['id'], 'available')
 
         # Export Backup
         export_backup = (self.admin_backups_client.export_backup(backup['id'])
@@ -126,16 +119,15 @@
 
     @test.idempotent_id('47a35425-a891-4e13-961c-c45deea21e94')
     def test_volume_backup_reset_status(self):
+        # Create a volume
+        volume = self.create_volume()
         # Create a backup
         backup_name = data_utils.rand_name(
             self.__class__.__name__ + '-Backup')
-        backup = self.admin_backups_client.create_backup(
-            volume_id=self.volume['id'], name=backup_name)['backup']
-        self.addCleanup(self.admin_backups_client.delete_backup,
-                        backup['id'])
+        backup = self.create_backup(backup_client=self.admin_backups_client,
+                                    volume_id=volume['id'],
+                                    name=backup_name)
         self.assertEqual(backup_name, backup['name'])
-        waiters.wait_for_backup_status(self.admin_backups_client,
-                                       backup['id'], 'available')
         # Reset backup status to error
         self.admin_backups_client.reset_backup_status(backup_id=backup['id'],
                                                       status="error")
diff --git a/tempest/api/volume/api_microversion_fixture.py b/tempest/api/volume/api_microversion_fixture.py
index 6817eaa..64bc537 100644
--- a/tempest/api/volume/api_microversion_fixture.py
+++ b/tempest/api/volume/api_microversion_fixture.py
@@ -13,7 +13,7 @@
 
 import fixtures
 
-from tempest.services.volume.base import base_v3_client
+from tempest.lib.services.volume.v3 import base_client
 
 
 class APIMicroversionFixture(fixtures.Fixture):
@@ -23,8 +23,8 @@
 
     def _setUp(self):
         super(APIMicroversionFixture, self)._setUp()
-        base_v3_client.VOLUME_MICROVERSION = self.volume_microversion
+        base_client.VOLUME_MICROVERSION = self.volume_microversion
         self.addCleanup(self._reset_volume_microversion)
 
     def _reset_volume_microversion(self):
-        base_v3_client.VOLUME_MICROVERSION = None
+        base_client.VOLUME_MICROVERSION = None
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index 178b0b1..01e2c82 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -150,6 +150,18 @@
                                          snapshot['id'], 'available')
         return snapshot
 
+    def create_backup(self, volume_id, backup_client=None, **kwargs):
+        """Wrapper utility that returns a test backup."""
+        if backup_client is None:
+            backup_client = self.backups_client
+
+        backup = backup_client.create_backup(
+            volume_id=volume_id, **kwargs)['backup']
+        self.addCleanup(backup_client.delete_backup, backup['id'])
+        waiters.wait_for_backup_status(backup_client, backup['id'],
+                                       'available')
+        return backup
+
     # NOTE(afazekas): these create_* and clean_* could be defined
     # only in a single location in the source, and could be more general.
 
diff --git a/tempest/api/volume/test_volumes_backup.py b/tempest/api/volume/test_volumes_backup.py
index 141336f..972dd58 100644
--- a/tempest/api/volume/test_volumes_backup.py
+++ b/tempest/api/volume/test_volumes_backup.py
@@ -38,16 +38,11 @@
                         volume['id'])
         backup_name = data_utils.rand_name(
             self.__class__.__name__ + '-Backup')
-        create_backup = self.backups_client.create_backup
-        backup = create_backup(volume_id=volume['id'],
-                               name=backup_name)['backup']
-        self.addCleanup(self.backups_client.delete_backup,
-                        backup['id'])
+        backup = self.create_backup(volume_id=volume['id'],
+                                    name=backup_name)
         self.assertEqual(backup_name, backup['name'])
         waiters.wait_for_volume_status(self.volumes_client,
                                        volume['id'], 'available')
-        waiters.wait_for_backup_status(self.backups_client,
-                                       backup['id'], 'available')
 
         # Get a given backup
         backup = self.backups_client.show_backup(backup['id'])['backup']
@@ -97,12 +92,8 @@
         # Create backup using force flag
         backup_name = data_utils.rand_name(
             self.__class__.__name__ + '-Backup')
-        backup = self.backups_client.create_backup(
-            volume_id=volume['id'],
-            name=backup_name, force=True)['backup']
-        self.addCleanup(self.backups_client.delete_backup, backup['id'])
-        waiters.wait_for_backup_status(self.backups_client,
-                                       backup['id'], 'available')
+        backup = self.create_backup(volume_id=volume['id'],
+                                    name=backup_name, force=True)
         self.assertEqual(backup_name, backup['name'])
 
 
diff --git a/tempest/api/volume/test_volumes_clone.py b/tempest/api/volume/test_volumes_clone.py
index 7529dc2..b0a434e 100644
--- a/tempest/api/volume/test_volumes_clone.py
+++ b/tempest/api/volume/test_volumes_clone.py
@@ -45,6 +45,22 @@
         self.assertEqual(volume['source_volid'], src_vol['id'])
         self.assertEqual(int(volume['size']), src_size + 1)
 
+    @test.idempotent_id('cbbcd7c6-5a6c-481a-97ac-ca55ab715d16')
+    def test_create_from_bootable_volume(self):
+        # Create volume from image
+        img_uuid = CONF.compute.image_ref
+        src_vol = self.create_volume(imageRef=img_uuid)
+
+        # Create a volume from the bootable volume
+        cloned_vol = self.create_volume(source_volid=src_vol['id'])
+        cloned_vol_details = self.volumes_client.show_volume(
+            cloned_vol['id'])['volume']
+
+        # Verify cloned volume creation as expected
+        self.assertEqual('true', cloned_vol_details['bootable'])
+        self.assertEqual(src_vol['id'], cloned_vol_details['source_volid'])
+        self.assertEqual(src_vol['size'], cloned_vol_details['size'])
+
 
 class VolumesV1CloneTest(VolumesCloneTest):
     _api_version = 1
diff --git a/tempest/api/volume/test_volumes_clone_negative.py b/tempest/api/volume/test_volumes_clone_negative.py
index d1bedb4..5c54e1e 100644
--- a/tempest/api/volume/test_volumes_clone_negative.py
+++ b/tempest/api/volume/test_volumes_clone_negative.py
@@ -22,11 +22,11 @@
 CONF = config.CONF
 
 
-class VolumesCloneTest(base.BaseVolumeTest):
+class VolumesV2CloneNegativeTest(base.BaseVolumeTest):
 
     @classmethod
     def skip_checks(cls):
-        super(VolumesCloneTest, cls).skip_checks()
+        super(VolumesV2CloneNegativeTest, cls).skip_checks()
         if not CONF.volume_feature_enabled.clone:
             raise cls.skipException("Cinder volume clones are disabled")
 
@@ -44,5 +44,5 @@
                           source_volid=src_vol['id'])
 
 
-class VolumesV1CloneTest(VolumesCloneTest):
+class VolumesV1CloneNegativeTest(VolumesV2CloneNegativeTest):
     _api_version = 1
diff --git a/tempest/clients.py b/tempest/clients.py
index 53f3775..b3290ac 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -25,7 +25,6 @@
 from tempest.services import identity
 from tempest.services import object_storage
 from tempest.services import orchestration
-from tempest.services import volume
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
@@ -275,8 +274,6 @@
                 raise lib_exc.InvalidConfiguration(msg)
 
     def _set_volume_clients(self):
-        # Mandatory parameters (always defined)
-        params = self.parameters['volume']
 
         self.volume_qos_client = self.volume_v1.QosSpecsClient()
         self.volume_qos_v2_client = self.volume_v2.QosSpecsClient()
@@ -291,8 +288,7 @@
         self.snapshots_v2_client = self.volume_v2.SnapshotsClient()
         self.volumes_client = self.volume_v1.VolumesClient()
         self.volumes_v2_client = self.volume_v2.VolumesClient()
-        self.volume_v3_messages_client = volume.v3.MessagesClient(
-            self.auth_provider, **params)
+        self.volume_v3_messages_client = self.volume_v3.MessagesClient()
         self.volume_types_client = self.volume_v1.TypesClient()
         self.volume_types_v2_client = self.volume_v2.TypesClient()
         self.volume_hosts_client = self.volume_v1.HostsClient()
diff --git a/tempest/config.py b/tempest/config.py
index 70ede55..7550287 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -278,6 +278,11 @@
                      'be utilized by some multinode specific tests to ensure '
                      'that requests match the expected size of the cluster '
                      'you are testing with.')),
+    cfg.StrOpt('hypervisor_type',
+               default=None,
+               help="Hypervisor type of the test target on heterogeneous "
+                    "compute environment. The value can be 'QEMU', 'xen' or "
+                    "something."),
     cfg.StrOpt('min_microversion',
                default=None,
                help="Lower version of the test target microversion range. "
diff --git a/tempest/lib/cli/base.py b/tempest/lib/cli/base.py
index a43d002..72a15b5 100644
--- a/tempest/lib/cli/base.py
+++ b/tempest/lib/cli/base.py
@@ -29,7 +29,7 @@
 
 
 def execute(cmd, action, flags='', params='', fail_ok=False,
-            merge_stderr=False, cli_dir='/usr/bin'):
+            merge_stderr=False, cli_dir='/usr/bin', prefix=''):
     """Executes specified command for the given action.
 
     :param cmd: command to be executed
@@ -48,9 +48,12 @@
     :type merge_stderr: boolean
     :param cli_dir: The path where the cmd can be executed
     :type cli_dir: string
+    :param prefix: prefix to insert before command
+    :type prefix: string
     """
-    cmd = ' '.join([os.path.join(cli_dir, cmd),
+    cmd = ' '.join([prefix, os.path.join(cli_dir, cmd),
                     flags, action, params])
+    cmd = cmd.strip()
     LOG.info("running: '%s'" % cmd)
     if six.PY2:
         cmd = cmd.encode('utf-8')
@@ -88,10 +91,12 @@
     :type cli_dir: string
     :param insecure: if True, --insecure is passed to python client binaries.
     :type insecure: boolean
+    :param prefix: prefix to insert before commands
+    :type prefix: string
     """
 
     def __init__(self, username='', password='', tenant_name='', uri='',
-                 cli_dir='', insecure=False, *args, **kwargs):
+                 cli_dir='', insecure=False, prefix='', *args, **kwargs):
         """Initialize a new CLIClient object."""
         super(CLIClient, self).__init__()
         self.cli_dir = cli_dir if cli_dir else '/usr/bin'
@@ -100,6 +105,7 @@
         self.password = password
         self.uri = uri
         self.insecure = insecure
+        self.prefix = prefix
 
     def nova(self, action, flags='', params='', fail_ok=False,
              endpoint_type='publicURL', merge_stderr=False):
@@ -365,7 +371,7 @@
         else:
             flags = creds + ' ' + flags
         return execute(cmd, action, flags, params, fail_ok, merge_stderr,
-                       self.cli_dir)
+                       self.cli_dir, prefix=self.prefix)
 
 
 class ClientTestBase(base.BaseTestCase):
diff --git a/tempest/lib/services/clients.py b/tempest/lib/services/clients.py
index 9e58872..0e8e3c6 100644
--- a/tempest/lib/services/clients.py
+++ b/tempest/lib/services/clients.py
@@ -45,7 +45,8 @@
         'image.v2': image.v2,
         'network': network,
         'volume.v1': volume.v1,
-        'volume.v2': volume.v2
+        'volume.v2': volume.v2,
+        'volume.v3': volume.v3
     }
 
 
@@ -54,7 +55,7 @@
     # NOTE(andreaf) This list will exists only as long the remain clients
     # are migrated to tempest.lib, and it will then be deleted without
     # deprecation or advance notice
-    return set(['identity.v3', 'object-storage', 'volume.v3'])
+    return set(['identity.v3', 'object-storage'])
 
 
 def available_modules():
diff --git a/tempest/lib/services/identity/v3/role_assignments_client.py b/tempest/lib/services/identity/v3/role_assignments_client.py
index c2dc3eb..10de03f 100644
--- a/tempest/lib/services/identity/v3/role_assignments_client.py
+++ b/tempest/lib/services/identity/v3/role_assignments_client.py
@@ -29,7 +29,8 @@
         http://developer.openstack.org/api-ref/identity/v3/?expanded=list-effective-role-assignments-detail
 
         :param effective: If True, returns the effective assignments, including
-                          any assignments gained by virtue of group membership.
+                          any assignments gained by virtue of group membership
+                          or inherited roles.
         """
         url = 'role_assignments'
         if kwargs:
diff --git a/tempest/lib/services/volume/__init__.py b/tempest/lib/services/volume/__init__.py
index 11da06c..6855d8e 100644
--- a/tempest/lib/services/volume/__init__.py
+++ b/tempest/lib/services/volume/__init__.py
@@ -14,5 +14,6 @@
 
 from tempest.lib.services.volume import v1
 from tempest.lib.services.volume import v2
+from tempest.lib.services.volume import v3
 
-__all__ = ['v1', 'v2']
+__all__ = ['v1', 'v2', 'v3']
diff --git a/tempest/services/volume/__init__.py b/tempest/lib/services/volume/v3/__init__.py
similarity index 77%
rename from tempest/services/volume/__init__.py
rename to tempest/lib/services/volume/v3/__init__.py
index c62dd53..a4600a8 100644
--- a/tempest/services/volume/__init__.py
+++ b/tempest/lib/services/volume/v3/__init__.py
@@ -12,6 +12,7 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 
-from tempest.services.volume import v3
+from tempest.lib.services.volume.v3.base_client import BaseClient
+from tempest.lib.services.volume.v3.messages_client import MessagesClient
 
-__all__ = ['v3']
+__all__ = ['MessagesClient', 'BaseClient']
diff --git a/tempest/services/volume/base/base_v3_client.py b/tempest/lib/services/volume/v3/base_client.py
similarity index 90%
rename from tempest/services/volume/base/base_v3_client.py
rename to tempest/lib/services/volume/v3/base_client.py
index ad6f760..958212a 100644
--- a/tempest/services/volume/base/base_v3_client.py
+++ b/tempest/lib/services/volume/v3/base_client.py
@@ -19,13 +19,13 @@
 VOLUME_MICROVERSION = None
 
 
-class BaseV3Client(rest_client.RestClient):
+class BaseClient(rest_client.RestClient):
     """Base class to handle Cinder v3 client microversion support."""
     api_version = 'v3'
     api_microversion_header_name = 'Openstack-Api-Version'
 
     def get_headers(self, accept_type=None, send_type=None):
-        headers = super(BaseV3Client, self).get_headers(
+        headers = super(BaseClient, self).get_headers(
             accept_type=accept_type, send_type=send_type)
         if VOLUME_MICROVERSION:
             headers[self.api_microversion_header_name] = ('volume %s' %
@@ -35,7 +35,7 @@
     def request(self, method, url, extra_headers=False, headers=None,
                 body=None, chunked=False):
 
-        resp, resp_body = super(BaseV3Client, self).request(
+        resp, resp_body = super(BaseClient, self).request(
             method, url, extra_headers, headers, body, chunked)
         if (VOLUME_MICROVERSION and
             VOLUME_MICROVERSION != api_version_utils.LATEST_MICROVERSION):
diff --git a/tempest/services/volume/v3/json/messages_client.py b/tempest/lib/services/volume/v3/messages_client.py
similarity index 94%
rename from tempest/services/volume/v3/json/messages_client.py
rename to tempest/lib/services/volume/v3/messages_client.py
index 6be6d59..8a01864 100644
--- a/tempest/services/volume/v3/json/messages_client.py
+++ b/tempest/lib/services/volume/v3/messages_client.py
@@ -17,10 +17,10 @@
 
 from tempest.lib.common import rest_client
 from tempest.lib import exceptions as lib_exc
-from tempest.services.volume.base import base_v3_client
+from tempest.lib.services.volume.v3 import base_client
 
 
-class MessagesClient(base_v3_client.BaseV3Client):
+class MessagesClient(base_client.BaseClient):
     """Client class to send user messages API requests."""
 
     def show_message(self, message_id):
diff --git a/tempest/services/volume/v3/__init__.py b/tempest/services/volume/v3/__init__.py
deleted file mode 100644
index d50098c..0000000
--- a/tempest/services/volume/v3/__init__.py
+++ /dev/null
@@ -1,17 +0,0 @@
-# Copyright (c) 2016 Hewlett-Packard Enterprise Development Company, L.P.
-#
-# 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.services.volume.v3.json.messages_client import MessagesClient
-
-__all__ = ['MessagesClient']
diff --git a/tempest/services/volume/v3/json/__init__.py b/tempest/services/volume/v3/json/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/tempest/services/volume/v3/json/__init__.py
+++ /dev/null
diff --git a/tempest/tests/lib/cli/test_execute.py b/tempest/tests/lib/cli/test_execute.py
index cc9c94c..aaeb6f4 100644
--- a/tempest/tests/lib/cli/test_execute.py
+++ b/tempest/tests/lib/cli/test_execute.py
@@ -11,7 +11,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-
 import mock
 import subprocess
 
@@ -74,3 +73,20 @@
         self.assertRaises(exceptions.CommandFailed, cli_base.execute,
                           "/bin/ls", action="tempest", flags="--foobar",
                           merge_stderr=True)
+
+    def test_execute_with_prefix(self):
+        result = cli_base.execute("env", action="",
+                                  prefix="env NEW_VAR=1")
+        self.assertIsInstance(result, str)
+        self.assertIn("NEW_VAR=1", result)
+
+
+class TestCLIClient(base.TestCase):
+
+    @mock.patch.object(cli_base, 'execute')
+    def test_execute_with_prefix(self, mock_execute):
+        cli = cli_base.CLIClient(prefix='env LAC_ALL=C')
+        cli.glance('action')
+        self.assertEqual(mock_execute.call_count, 1)
+        self.assertEqual(mock_execute.call_args[1],
+                         {'prefix': 'env LAC_ALL=C'})
diff --git a/tempest/services/volume/base/__init__.py b/tempest/tests/lib/services/volume/v3/__init__.py
similarity index 100%
rename from tempest/services/volume/base/__init__.py
rename to tempest/tests/lib/services/volume/v3/__init__.py
diff --git a/tempest/tests/lib/services/volume/v3/test_user_messages.py b/tempest/tests/lib/services/volume/v3/test_user_messages.py
new file mode 100644
index 0000000..4aeed5f
--- /dev/null
+++ b/tempest/tests/lib/services/volume/v3/test_user_messages.py
@@ -0,0 +1,92 @@
+# Copyright 2016 Red Hat.  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.v3 import messages_client
+from tempest.tests.lib import fake_auth_provider
+from tempest.tests.lib.services import base
+
+
+class TestUserMessagesClient(base.BaseServiceTest):
+    USER_MESSAGE_INFO = {
+        "created_at": "2016-11-21T06:16:34.000000",
+        "guaranteed_until": "2016-12-21T06:16:34.000000",
+        "user_message": "No storage could be allocated for this volume "
+                        "request. You may be able to try another size or"
+                        " volume type.",
+        "resource_uuid": "c570b406-bf0b-4067-9398-f0bb09a7d9d7",
+        "request_id": "req-8f68681e-9b6b-4009-b94c-ac0811595451",
+        "message_level": "ERROR",
+        "id": "9a7dafbd-a156-4540-8996-50e71b5dcadf",
+        "resource_type": "VOLUME",
+        "links": [
+            {"href": "http://192.168.100.230:8776/v3/"
+                     "a678cb65f701462ea2257245cd640829/messages/"
+                     "9a7dafbd-a156-4540-8996-50e71b5dcadf",
+             "rel": "self"},
+            {"href": "http://192.168.100.230:8776/"
+                     "a678cb65f701462ea2257245cd640829/messages/"
+                     "9a7dafbd-a156-4540-8996-50e71b5dcadf",
+             "rel": "bookmark"}]
+        }
+    FAKE_SHOW_USER_MESSAGE = {
+        "message": dict(event_id="000002", **USER_MESSAGE_INFO)}
+
+    FAKE_LIST_USER_MESSAGES = {
+        "messages": [
+            dict(event_id="000003", **USER_MESSAGE_INFO),
+            dict(event_id="000004", **USER_MESSAGE_INFO)
+        ]
+    }
+
+    def setUp(self):
+        super(TestUserMessagesClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = messages_client.MessagesClient(fake_auth,
+                                                     'volume',
+                                                     'regionOne')
+
+    def _test_show_user_message(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.show_message,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_SHOW_USER_MESSAGE,
+            bytes_body,
+            message_id="9a7dafbd-a156-4540-8996-50e71b5dcadf")
+
+    def _test_list_user_message(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_messages,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_USER_MESSAGES,
+            bytes_body)
+
+    def test_list_user_message_with_str_body(self):
+        self._test_list_user_message()
+
+    def test_list_user_message_with_bytes_body(self):
+        self._test_list_user_message(bytes_body=True)
+
+    def test_show_user_message_with_str_body(self):
+        self._test_show_user_message()
+
+    def test_show_user_message_with_bytes_body(self):
+        self._test_show_user_message(bytes_body=True)
+
+    def test_delete_user_message(self):
+        self.check_service_client_function(
+            self.client.delete_message,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            message_id="9a7dafbd-a156-4540-8996-50e71b5dcadf",
+            status=204)