diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index 0eeb738..bc4198f 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -779,6 +779,10 @@
 # value)
 #dns_servers = 8.8.8.8,8.8.4.4
 
+# vnic_type to use when Launching instances with pre-configured ports.
+# Supported ports are: ['normal','direct','macvtap'] (string value)
+#port_vnic_type = <None>
+
 
 [network-feature-enabled]
 
diff --git a/tempest/api/baremetal/admin/base.py b/tempest/api/baremetal/admin/base.py
index 3b12b8e..1e9b308 100644
--- a/tempest/api/baremetal/admin/base.py
+++ b/tempest/api/baremetal/admin/base.py
@@ -11,11 +11,11 @@
 #    under the License.
 
 import functools
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions as exc
 from tempest import test
 
 CONF = config.CONF
@@ -83,7 +83,7 @@
                 uuids = cls.created_objects[resource]
                 delete_method = getattr(cls.client, 'delete_%s' % resource)
                 for u in uuids:
-                    delete_method(u, ignore_errors=exc.NotFound)
+                    delete_method(u, ignore_errors=lib_exc.NotFound)
         finally:
             super(BaseBaremetalTest, cls).resource_cleanup()
 
diff --git a/tempest/api/baremetal/admin/test_chassis.py b/tempest/api/baremetal/admin/test_chassis.py
index 6f83412..1cf22ae 100644
--- a/tempest/api/baremetal/admin/test_chassis.py
+++ b/tempest/api/baremetal/admin/test_chassis.py
@@ -11,9 +11,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -63,7 +64,7 @@
         uuid = body['uuid']
 
         self.delete_chassis(uuid)
-        self.assertRaises(exc.NotFound, self.client.show_chassis, uuid)
+        self.assertRaises(lib_exc.NotFound, self.client.show_chassis, uuid)
 
     @test.attr(type='smoke')
     def test_update_chassis(self):
diff --git a/tempest/api/baremetal/admin/test_nodes.py b/tempest/api/baremetal/admin/test_nodes.py
index 41c12c6..96f4b43 100644
--- a/tempest/api/baremetal/admin/test_nodes.py
+++ b/tempest/api/baremetal/admin/test_nodes.py
@@ -11,11 +11,11 @@
 #    under the License.
 
 import six
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
 from tempest.common import waiters
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -62,7 +62,8 @@
 
         self.delete_node(node['uuid'])
 
-        self.assertRaises(exc.NotFound, self.client.show_node, node['uuid'])
+        self.assertRaises(lib_exc.NotFound, self.client.show_node,
+                          node['uuid'])
 
     @test.attr(type='smoke')
     def test_show_node(self):
diff --git a/tempest/api/baremetal/admin/test_ports.py b/tempest/api/baremetal/admin/test_ports.py
index 4aedaa4..0076dee 100644
--- a/tempest/api/baremetal/admin/test_ports.py
+++ b/tempest/api/baremetal/admin/test_ports.py
@@ -10,9 +10,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -57,7 +59,7 @@
         _, body = self.client.show_port(uuid)
         self._assertExpected(port, body)
 
-    @test.skip_because(bug='1398350')
+    @decorators.skip_because(bug='1398350')
     @test.attr(type='smoke')
     def test_create_port_with_extra(self):
         node_id = self.node['uuid']
@@ -79,7 +81,8 @@
 
         self.delete_port(port['uuid'])
 
-        self.assertRaises(exc.NotFound, self.client.show_port, port['uuid'])
+        self.assertRaises(lib_exc.NotFound, self.client.show_port,
+                          port['uuid'])
 
     @test.attr(type='smoke')
     def test_show_port(self):
@@ -231,7 +234,7 @@
         _, body = self.client.show_port(port['uuid'])
         self.assertEqual(extra, body['extra'])
 
-    @test.skip_because(bug='1398350')
+    @decorators.skip_because(bug='1398350')
     @test.attr(type='smoke')
     def test_update_port_mixed_ops(self):
         node_id = self.node['uuid']
diff --git a/tempest/api/baremetal/admin/test_ports_negative.py b/tempest/api/baremetal/admin/test_ports_negative.py
index 8080eb6..dd19edc 100644
--- a/tempest/api/baremetal/admin/test_ports_negative.py
+++ b/tempest/api/baremetal/admin/test_ports_negative.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
 from tempest import exceptions as exc
@@ -47,7 +49,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_port_nonexistent_uuid(self):
-        self.assertRaises(exc.NotFound, self.client.show_port,
+        self.assertRaises(lib_exc.NotFound, self.client.show_port,
                           data_utils.rand_uuid())
 
     @test.attr(type=['negative', 'smoke'])
@@ -62,7 +64,7 @@
         uuid = data_utils.rand_uuid()
 
         self.create_port(node_id=node_id, address=address, uuid=uuid)
-        self.assertRaises(exc.Conflict, self.create_port, node_id=node_id,
+        self.assertRaises(lib_exc.Conflict, self.create_port, node_id=node_id,
                           address=address, uuid=uuid)
 
     @test.attr(type=['negative', 'smoke'])
@@ -99,7 +101,7 @@
         node_id = self.node['uuid']
         address = data_utils.rand_mac_address()
         self.create_port(node_id=node_id, address=address)
-        self.assertRaises(exc.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.create_port, node_id=node_id,
                           address=address)
 
@@ -134,7 +136,7 @@
         patch = [{'path': '/extra/key',
                   'op': 'replace',
                   'value': 'new-value'}]
-        self.assertRaises(exc.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -190,7 +192,7 @@
         patch = [{'path': '/address',
                   'op': 'replace',
                   'value': address1}]
-        self.assertRaises(exc.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
diff --git a/tempest/api/compute/admin/test_agents.py b/tempest/api/compute/admin/test_agents.py
index 425ce13..b28b9e0 100644
--- a/tempest/api/compute/admin/test_agents.py
+++ b/tempest/api/compute/admin/test_agents.py
@@ -12,9 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest.openstack.common import log
 from tempest import test
 
@@ -43,7 +44,7 @@
     def tearDown(self):
         try:
             self.client.delete_agent(self.agent_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
         except Exception:
             LOG.exception('Exception raised deleting agent %s', self.agent_id)
diff --git a/tempest/api/compute/admin/test_aggregates.py b/tempest/api/compute/admin/test_aggregates.py
index a866ede..dd40145 100644
--- a/tempest/api/compute/admin/test_aggregates.py
+++ b/tempest/api/compute/admin/test_aggregates.py
@@ -13,10 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -45,7 +46,7 @@
         try:
             self.client.delete_aggregate(aggregate_id)
         # if aggregate not found, it depict it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @test.attr(type='gate')
diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
index a450e5d..48f6f94 100644
--- a/tempest/api/compute/admin/test_aggregates_negative.py
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
@@ -43,7 +45,7 @@
     def test_aggregate_create_as_user(self):
         # Regular user is not allowed to create an aggregate.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.create_aggregate,
                           name=aggregate_name)
 
@@ -69,7 +71,7 @@
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.create_aggregate,
                           name=aggregate_name)
 
@@ -80,14 +82,14 @@
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.delete_aggregate,
                           aggregate['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_list_as_user(self):
         # Regular user is not allowed to list aggregates.
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.list_aggregates)
 
     @test.attr(type=['negative', 'gate'])
@@ -97,20 +99,20 @@
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.get_aggregate,
                           aggregate['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_delete_with_invalid_id(self):
         # Delete an aggregate with invalid id should raise exceptions.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_aggregate, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_get_details_with_invalid_id(self):
         # Get aggregate details with invalid id should raise exceptions.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_aggregate, -1)
 
     @test.attr(type=['negative', 'gate'])
@@ -127,7 +129,7 @@
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.NotFound, self.client.add_host,
+        self.assertRaises(lib_exc.NotFound, self.client.add_host,
                           aggregate['id'], non_exist_host)
 
     @test.attr(type=['negative', 'gate'])
@@ -137,7 +139,7 @@
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.add_host,
                           aggregate['id'], self.host)
 
@@ -151,7 +153,7 @@
         self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
 
-        self.assertRaises(exceptions.Conflict, self.client.add_host,
+        self.assertRaises(lib_exc.Conflict, self.client.add_host,
                           aggregate['id'], self.host)
 
     @test.attr(type=['negative', 'gate'])
@@ -164,7 +166,7 @@
         self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.remove_host,
                           aggregate['id'], self.host)
 
@@ -175,5 +177,5 @@
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.NotFound, self.client.remove_host,
+        self.assertRaises(lib_exc.NotFound, self.client.remove_host,
                           aggregate['id'], non_exist_host)
diff --git a/tempest/api/compute/admin/test_availability_zone_negative.py b/tempest/api/compute/admin/test_availability_zone_negative.py
index d062b0c..546aa3b 100644
--- a/tempest/api/compute/admin/test_availability_zone_negative.py
+++ b/tempest/api/compute/admin/test_availability_zone_negative.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -33,5 +34,5 @@
         # List of availability zones and available services with
         # non-administrator user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_availability_zone_list_detail)
diff --git a/tempest/api/compute/admin/test_fixed_ips_negative.py b/tempest/api/compute/admin/test_fixed_ips_negative.py
index e7022db..bb5fa8c 100644
--- a/tempest/api/compute/admin/test_fixed_ips_negative.py
+++ b/tempest/api/compute/admin/test_fixed_ips_negative.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest import config
 from tempest import exceptions
@@ -43,14 +45,14 @@
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_list_fixed_ip_details_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.get_fixed_ip_details, self.ip)
 
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_set_reserve_with_non_admin_user(self):
         body = {"reserve": "None"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reserve_fixed_ip,
                           self.ip, body)
 
@@ -58,7 +60,7 @@
     @test.services('network')
     def test_set_unreserve_with_non_admin_user(self):
         body = {"unreserve": "None"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reserve_fixed_ip,
                           self.ip, body)
 
@@ -71,7 +73,7 @@
         # NOTE(eliqiao): in Juno, the exception is NotFound, but in master, we
         # change the error code to BadRequest, both exceptions should be
         # accepted by tempest
-        self.assertRaises((exceptions.NotFound, exceptions.BadRequest),
+        self.assertRaises((lib_exc.NotFound, exceptions.BadRequest),
                           self.client.reserve_fixed_ip,
                           "my.invalid.ip", body)
 
diff --git a/tempest/api/compute/admin/test_flavors_access_negative.py b/tempest/api/compute/admin/test_flavors_access_negative.py
index 4ba9eb2..5031432 100644
--- a/tempest/api/compute/admin/test_flavors_access_negative.py
+++ b/tempest/api/compute/admin/test_flavors_access_negative.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -53,7 +53,7 @@
                                                new_flavor_id,
                                                is_public='True')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_flavor_access,
                           new_flavor_id)
 
@@ -68,7 +68,7 @@
                                                new_flavor_id,
                                                is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.add_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
@@ -88,7 +88,7 @@
         self.client.add_flavor_access(new_flavor['id'], self.tenant_id)
         self.addCleanup(self.client.remove_flavor_access,
                         new_flavor['id'], self.tenant_id)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.remove_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
@@ -112,7 +112,7 @@
 
         # An exception should be raised when adding flavor access to the same
         # tenant
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.add_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
@@ -130,7 +130,7 @@
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
 
         # An exception should be raised when flavor access is not found
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.remove_flavor_access,
                           new_flavor['id'],
                           str(uuid.uuid4()))
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
index 2663e25..e414973 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
@@ -14,6 +14,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -61,7 +63,7 @@
     def test_flavor_non_admin_set_keys(self):
         # Test to SET flavor extra spec as a user without admin privileges.
         specs = {"key1": "value1", "key2": "value2"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.set_flavor_extra_spec,
                           self.flavor['id'],
                           specs)
@@ -73,7 +75,7 @@
         body = self.client.set_flavor_extra_spec(
             self.flavor['id'], specs)
         self.assertEqual(body['key1'], 'value1')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.
                           update_flavor_extra_spec,
                           self.flavor['id'],
@@ -85,7 +87,7 @@
         specs = {"key1": "value1", "key2": "value2"}
         self.client.set_flavor_extra_spec(self.flavor['id'], specs)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.unset_flavor_extra_spec,
                           self.flavor['id'],
                           'key1')
@@ -93,14 +95,14 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_unset_nonexistent_key(self):
         nonexistent_key = data_utils.rand_name('flavor_key')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.unset_flavor_extra_spec,
                           self.flavor['id'],
                           nonexistent_key)
 
     @test.attr(type=['negative', 'gate'])
     def test_flavor_get_nonexistent_key(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.flavors_client.get_flavor_extra_spec_with_key,
                           self.flavor['id'],
                           "nonexistent_key")
diff --git a/tempest/api/compute/admin/test_flavors_negative.py b/tempest/api/compute/admin/test_flavors_negative.py
index 86125fb..34d8e3f 100644
--- a/tempest/api/compute/admin/test_flavors_negative.py
+++ b/tempest/api/compute/admin/test_flavors_negative.py
@@ -15,11 +15,12 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.api_schema.request.compute.v2 import flavors
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 
@@ -88,7 +89,7 @@
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = str(uuid.uuid4())
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.create_flavor,
                           flavor_name, self.ram, self.vcpus, self.disk,
                           new_flavor_id, ephemeral=self.ephemeral,
@@ -97,7 +98,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_delete_flavor_as_user(self):
         # only admin user can delete a flavor
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.delete_flavor,
                           self.flavor_ref_alt)
 
diff --git a/tempest/api/compute/admin/test_hosts_negative.py b/tempest/api/compute/admin/test_hosts_negative.py
index fc918a3..20429b1 100644
--- a/tempest/api/compute/admin/test_hosts_negative.py
+++ b/tempest/api/compute/admin/test_hosts_negative.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -38,20 +40,20 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_list_hosts_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_hosts)
 
     @test.attr(type=['negative', 'gate'])
     def test_show_host_detail_with_nonexistent_hostname(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.show_host_detail, nonexitent_hostname)
 
     @test.attr(type=['negative', 'gate'])
     def test_show_host_detail_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.show_host_detail,
                           hostname)
 
@@ -59,7 +61,7 @@
     def test_update_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_host,
                           hostname,
                           status='enable',
@@ -112,7 +114,7 @@
     def test_update_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_host,
                           nonexitent_hostname,
                           status='enable',
@@ -122,7 +124,7 @@
     def test_startup_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.startup_host,
                           nonexitent_hostname)
 
@@ -130,7 +132,7 @@
     def test_startup_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.startup_host,
                           hostname)
 
@@ -138,7 +140,7 @@
     def test_shutdown_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.shutdown_host,
                           nonexitent_hostname)
 
@@ -146,7 +148,7 @@
     def test_shutdown_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.shutdown_host,
                           hostname)
 
@@ -154,7 +156,7 @@
     def test_reboot_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.reboot_host,
                           nonexitent_hostname)
 
@@ -162,6 +164,6 @@
     def test_reboot_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reboot_host,
                           hostname)
diff --git a/tempest/api/compute/admin/test_hypervisor_negative.py b/tempest/api/compute/admin/test_hypervisor_negative.py
index a137a61..a9c1cb1 100644
--- a/tempest/api/compute/admin/test_hypervisor_negative.py
+++ b/tempest/api/compute/admin/test_hypervisor_negative.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -43,7 +43,7 @@
         nonexistent_hypervisor_id = str(uuid.uuid4())
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.get_hypervisor_show_details,
             nonexistent_hypervisor_id)
 
@@ -53,7 +53,7 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_show_details,
             hypers[0]['id'])
 
@@ -63,7 +63,7 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_servers,
             hypers[0]['id'])
 
@@ -72,14 +72,14 @@
         nonexistent_hypervisor_id = str(uuid.uuid4())
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.get_hypervisor_servers,
             nonexistent_hypervisor_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_hypervisor_stats_with_non_admin_user(self):
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_stats)
 
     @test.attr(type=['negative', 'gate'])
@@ -87,7 +87,7 @@
         nonexistent_hypervisor_id = str(uuid.uuid4())
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.get_hypervisor_uptime,
             nonexistent_hypervisor_id)
 
@@ -97,7 +97,7 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_uptime,
             hypers[0]['id'])
 
@@ -105,14 +105,14 @@
     def test_get_hypervisor_list_with_non_admin_user(self):
         # List of hypervisor and available services with non admin user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_list)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_hypervisor_list_details_with_non_admin_user(self):
         # List of hypervisor details and available services with non admin user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_list_details)
 
     @test.attr(type=['negative', 'gate'])
@@ -120,7 +120,7 @@
         nonexistent_hypervisor_name = data_utils.rand_name('test_hypervisor')
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.search_hypervisor,
             nonexistent_hypervisor_name)
 
@@ -130,6 +130,6 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.search_hypervisor,
             hypers[0]['hypervisor_hostname'])
diff --git a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
index c4905d9..1e03bd0 100644
--- a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
+++ b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
@@ -16,6 +16,8 @@
 import datetime
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest import exceptions
 from tempest import test
@@ -31,11 +33,11 @@
     @test.attr(type=['negative', 'gate'])
     def test_instance_usage_audit_logs_with_nonadmin_user(self):
         # the instance_usage_audit_logs API just can be accessed by admin user
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.instance_usages_audit_log_client.
                           list_instance_usage_audit_logs)
         now = datetime.datetime.now()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.instance_usages_audit_log_client.
                           get_instance_usage_audit_log,
                           urllib.quote(now.strftime("%Y-%m-%d %H:%M:%S")))
diff --git a/tempest/api/compute/admin/test_quotas_negative.py b/tempest/api/compute/admin/test_quotas_negative.py
index b24f316..2fb7be6 100644
--- a/tempest/api/compute/admin/test_quotas_negative.py
+++ b/tempest/api/compute/admin/test_quotas_negative.py
@@ -12,10 +12,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -37,7 +39,7 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_update_quota_normal_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.update_quota_set,
                           self.demo_tenant_id,
                           ram=0)
@@ -57,7 +59,7 @@
 
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         cores=default_vcpu_quota)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
     @test.attr(type=['negative', 'gate'])
@@ -73,7 +75,7 @@
 
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         ram=default_mem_quota)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
     @test.attr(type=['negative', 'gate'])
@@ -88,11 +90,11 @@
                                          instances=instances_quota)
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         instances=default_instances_quota)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
-    @test.skip_because(bug="1186354",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1186354",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     @test.services('network')
     def test_security_groups_exceed_limit(self):
@@ -114,12 +116,12 @@
         # Check we cannot create anymore
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.sg_client.create_security_group,
                           "sg-overlimit", "sg-desc")
 
-    @test.skip_because(bug="1186354",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1186354",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_security_groups_rules_exceed_limit(self):
@@ -153,6 +155,6 @@
         # Check we cannot create SG rule anymore
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.OverLimit, exceptions.Unauthorized),
+        self.assertRaises((lib_exc.OverLimit, lib_exc.Unauthorized),
                           self.sg_client.create_security_group_rule,
                           secgroup_id, ip_protocol, 1025, 1025)
diff --git a/tempest/api/compute/admin/test_security_group_default_rules.py b/tempest/api/compute/admin/test_security_group_default_rules.py
index 563d517..31103df 100644
--- a/tempest/api/compute/admin/test_security_group_default_rules.py
+++ b/tempest/api/compute/admin/test_security_group_default_rules.py
@@ -12,11 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -59,7 +59,7 @@
             rule = self._create_security_group_default_rules(ip_protocol)
             # Delete Security Group default rule
             self.adm_client.delete_security_group_default_rule(rule['id'])
-            self.assertRaises(exceptions.NotFound,
+            self.assertRaises(lib_exc.NotFound,
                               self.adm_client.get_security_group_default_rule,
                               rule['id'])
 
diff --git a/tempest/api/compute/admin/test_servers.py b/tempest/api/compute/admin/test_servers.py
index 5210077..cff9a43 100644
--- a/tempest/api/compute/admin/test_servers.py
+++ b/tempest/api/compute/admin/test_servers.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -142,7 +144,7 @@
         self.assertEqual(server['status'], 'ACTIVE')
 
     @test.attr(type='gate')
-    @test.skip_because(bug="1240043")
+    @decorators.skip_because(bug="1240043")
     def test_get_server_diagnostics_by_admin(self):
         # Retrieve server diagnostics by admin user
         resp, diagnostic = self.client.get_server_diagnostics(self.s1_id)
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 0dddc76..0d4731d 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -14,6 +14,7 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
@@ -50,7 +51,7 @@
         while True:
             try:
                 self.flavors_client.get_flavor_details(flavor_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 break
             flavor_id = data_utils.rand_int_id(start=1000)
         return flavor_id
@@ -71,7 +72,7 @@
                                                        ram, vcpus, disk,
                                                        flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.resize,
                           self.servers[0]['id'],
                           flavor_ref['id'])
@@ -92,7 +93,7 @@
                                                        ram, vcpus, disk,
                                                        flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.resize,
                           self.servers[0]['id'],
                           flavor_ref['id'])
@@ -111,20 +112,20 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_reset_state_server_nonexistent_server(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.reset_state, '999')
 
     @test.attr(type=['negative', 'gate'])
     def test_get_server_diagnostics_by_non_admin(self):
         # Non-admin user can not view server diagnostics according to policy
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_adm_client.get_server_diagnostics,
                           self.s1_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_migrate_non_existent_server(self):
         # migrate a non existent server
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.migrate_server,
                           str(uuid.uuid4()))
 
@@ -143,6 +144,6 @@
         self.assertEqual(202, resp.status)
         self.client.wait_for_server_status(server_id, 'SUSPENDED')
         # migrate an suspended server should fail
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.migrate_server,
                           server_id)
diff --git a/tempest/api/compute/admin/test_services_negative.py b/tempest/api/compute/admin/test_services_negative.py
index bb19a39..39d0ee1 100644
--- a/tempest/api/compute/admin/test_services_negative.py
+++ b/tempest/api/compute/admin/test_services_negative.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -31,7 +32,7 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_list_services_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_services)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
index 8c31d7c..b371f2d 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import datetime
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
 from tempest import exceptions
@@ -42,7 +43,7 @@
         # Get usage for a specific tenant empty
         params = {'start': self.start,
                   'end': self.end}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.adm_client.get_tenant_usage,
                           '', params)
 
@@ -61,5 +62,5 @@
         params = {'start': self.start,
                   'end': self.end,
                   'detailed': int(bool(True))}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.list_tenant_usages, params)
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index 3e80bf2..4ad6c1d 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import time
 
 from tempest import clients
@@ -107,7 +108,7 @@
         for server in cls.servers:
             try:
                 cls.servers_client.delete_server(server['id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # Something else already cleaned up the server, nothing to be
                 # worried about
                 pass
@@ -147,7 +148,7 @@
         for image_id in cls.images:
             try:
                 cls.images_client.delete_image(image_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The image may have already been deleted which is OK.
                 pass
             except Exception:
@@ -160,7 +161,7 @@
         for sg in cls.security_groups:
             try:
                 cls.security_groups_client.delete_security_group(sg['id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The security group may have already been deleted which is OK.
                 pass
             except Exception as exc:
@@ -174,7 +175,7 @@
         for server_group_id in cls.server_groups:
             try:
                 cls.servers_client.delete_server_group(server_group_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The server-group may have already been deleted which is OK.
                 pass
             except Exception:
@@ -274,7 +275,7 @@
             # TODO(mriedem): We should move the wait_for_resource_deletion
             # into the delete_volume method as a convenience to the caller.
             volumes_client.wait_for_resource_deletion(volume_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn("Unable to delete volume '%s' since it was not found. "
                      "Maybe it was already deleted?" % volume_id)
 
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions.py b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
index e6f4fb0..089ee5a 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
@@ -17,7 +17,6 @@
 
 from tempest.api.compute.floating_ips import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -51,7 +50,7 @@
         try:
             self.client.delete_floating_ip(floating_ip_id)
         # if not found, it depicts it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @test.attr(type='gate')
@@ -136,8 +135,8 @@
                             self.new_server_id)
 
         # Make sure no longer associated with old server
-        self.assertRaises((exceptions.NotFound,
+        self.assertRaises((lib_exc.NotFound,
                            lib_exc.UnprocessableEntity,
-                           exceptions.Conflict),
+                           lib_exc.Conflict),
                           self.client.disassociate_floating_ip_from_server,
                           self.floating_ip, self.server_id)
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py b/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
index b08df97..b4ea175 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
@@ -15,6 +15,8 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute.floating_ips import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -52,7 +54,7 @@
     def test_allocate_floating_ip_from_nonexistent_pool(self):
         # Negative test:Allocation of a new floating IP from a nonexistent_pool
         # to a project should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.create_floating_ip,
                           "non_exist_pool")
 
@@ -63,7 +65,7 @@
         # from project should fail
 
         # Deleting the non existent floating IP
-        self.assertRaises(exceptions.NotFound, self.client.delete_floating_ip,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_floating_ip,
                           self.non_exist_id)
 
     @test.attr(type=['negative', 'gate'])
@@ -72,7 +74,7 @@
         # Negative test:Association of a non existent floating IP
         # to specific server should fail
         # Associating non existent floating IP
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.associate_floating_ip_to_server,
                           "0.0.0.0", self.server_id)
 
@@ -81,7 +83,7 @@
     def test_dissociate_nonexistent_floating_ip(self):
         # Negative test:Dissociation of a non existent floating IP should fail
         # Dissociating non existent floating IP
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.disassociate_floating_ip_from_server,
                           "0.0.0.0", self.server_id)
 
@@ -90,6 +92,6 @@
     def test_associate_ip_to_server_without_passing_floating_ip(self):
         # Negative test:Association of empty floating IP to specific server
         # should raise NotFound or BadRequest(In case of Nova V2.1) exception.
-        self.assertRaises((exceptions.NotFound, exceptions.BadRequest),
+        self.assertRaises((lib_exc.NotFound, exceptions.BadRequest),
                           self.client.associate_floating_ip_to_server,
                           '', self.server_id)
diff --git a/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py b/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
index c343018..b3ff132 100644
--- a/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
+++ b/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
@@ -15,10 +15,11 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -41,5 +42,5 @@
             non_exist_id = str(uuid.uuid4())
         else:
             non_exist_id = data_utils.rand_int_id(start=999)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_floating_ip_details, non_exist_id)
diff --git a/tempest/api/compute/images/test_image_metadata_negative.py b/tempest/api/compute/images/test_image_metadata_negative.py
index 73412ff..0013714 100644
--- a/tempest/api/compute/images/test_image_metadata_negative.py
+++ b/tempest/api/compute/images/test_image_metadata_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -30,21 +31,21 @@
     def test_list_nonexistent_image_metadata(self):
         # Negative test: List on nonexistent image
         # metadata should not happen
-        self.assertRaises(exceptions.NotFound, self.client.list_image_metadata,
+        self.assertRaises(lib_exc.NotFound, self.client.list_image_metadata,
                           data_utils.rand_uuid())
 
     @test.attr(type=['negative', 'gate'])
     def test_update_nonexistent_image_metadata(self):
         # Negative test:An update should not happen for a non-existent image
         meta = {'os_distro': 'alt1', 'os_version': 'alt2'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_image_metadata,
                           data_utils.rand_uuid(), meta)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_nonexistent_image_metadata_item(self):
         # Negative test: Get on non-existent image should not happen
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_image_metadata_item,
                           data_utils.rand_uuid(), 'os_version')
 
@@ -52,7 +53,7 @@
     def test_set_nonexistent_image_metadata(self):
         # Negative test: Metadata should not be set to a non-existent image
         meta = {'os_distro': 'alt1', 'os_version': 'alt2'}
-        self.assertRaises(exceptions.NotFound, self.client.set_image_metadata,
+        self.assertRaises(lib_exc.NotFound, self.client.set_image_metadata,
                           data_utils.rand_uuid(), meta)
 
     @test.attr(type=['negative', 'gate'])
@@ -60,7 +61,7 @@
         # Negative test: Metadata item should not be set to a
         # nonexistent image
         meta = {'os_distro': 'alt'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.set_image_metadata_item,
                           data_utils.rand_uuid(), 'os_distro',
                           meta)
@@ -69,6 +70,6 @@
     def test_delete_nonexistent_image_metadata_item(self):
         # Negative test: Shouldn't be able to delete metadata
         # item from non-existent image
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_image_metadata_item,
                           data_utils.rand_uuid(), 'os_distro')
diff --git a/tempest/api/compute/images/test_images_negative.py b/tempest/api/compute/images/test_images_negative.py
index 58fc20d..cf127ee 100644
--- a/tempest/api/compute/images/test_images_negative.py
+++ b/tempest/api/compute/images/test_images_negative.py
@@ -12,10 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -49,7 +50,7 @@
         # Create a new image after server is deleted
         name = data_utils.rand_name('image')
         meta = {'image_type': 'test'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.create_image_from_server,
                           server['id'], name=name, meta=meta)
 
@@ -61,7 +62,7 @@
         meta = {'image_type': 'test'}
         resp = {}
         resp['status'] = None
-        self.assertRaises(exceptions.NotFound, self.create_image_from_server,
+        self.assertRaises(lib_exc.NotFound, self.create_image_from_server,
                           '!@#$%^&*()', name=name, meta=meta)
 
     @test.attr(type=['negative', 'gate'])
@@ -84,7 +85,7 @@
         # Return an error if Image ID passed is 35 characters or less
         snapshot_name = data_utils.rand_name('test-snap-')
         test_uuid = ('a' * 35)
-        self.assertRaises(exceptions.NotFound, self.client.create_image,
+        self.assertRaises(lib_exc.NotFound, self.client.create_image,
                           test_uuid, snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -92,13 +93,13 @@
         # Return an error if Image ID passed is 37 characters or more
         snapshot_name = data_utils.rand_name('test-snap-')
         test_uuid = ('a' * 37)
-        self.assertRaises(exceptions.NotFound, self.client.create_image,
+        self.assertRaises(lib_exc.NotFound, self.client.create_image,
                           test_uuid, snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_with_invalid_image_id(self):
         # An image should not be deleted with invalid image id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '!@$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
@@ -106,28 +107,28 @@
         # Return an error while trying to delete a non-existent image
 
         non_existent_image_id = '11a22b9-12a9-5555-cc11-00ab112223fa'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           non_existent_image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_blank_id(self):
         # Return an error while trying to delete an image with blank Id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_non_hex_string_id(self):
         # Return an error while trying to delete an image with non hex id
         image_id = '11a22b9-120q-5555-cc11-00ab112223gj'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_negative_image_id(self):
         # Return an error while trying to delete an image with negative id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, -1)
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_id_is_over_35_character_limit(self):
         # Return an error while trying to delete image with id over limit
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '11a22b9-12a9-5555-cc11-00ab112223fa-3fac')
diff --git a/tempest/api/compute/images/test_images_oneserver_negative.py b/tempest/api/compute/images/test_images_oneserver_negative.py
index 46cec9b..63f5b9e 100644
--- a/tempest/api/compute/images/test_images_oneserver_negative.py
+++ b/tempest/api/compute/images/test_images_oneserver_negative.py
@@ -14,6 +14,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -102,7 +104,7 @@
 
         # Create second snapshot
         alt_snapshot_name = data_utils.rand_name('test-snap-')
-        self.assertRaises(exceptions.Conflict, self.client.create_image,
+        self.assertRaises(lib_exc.Conflict, self.client.create_image,
                           self.server_id, alt_snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -127,4 +129,4 @@
         self.client.delete_image(image_id)
         self.image_ids.remove(image_id)
 
-        self.assertRaises(exceptions.NotFound, self.client.get_image, image_id)
+        self.assertRaises(lib_exc.NotFound, self.client.get_image, image_id)
diff --git a/tempest/api/compute/images/test_list_image_filters_negative.py b/tempest/api/compute/images/test_list_image_filters_negative.py
index a8f2ae7..77c9459 100644
--- a/tempest/api/compute/images/test_list_image_filters_negative.py
+++ b/tempest/api/compute/images/test_list_image_filters_negative.py
@@ -12,10 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -35,5 +36,5 @@
     def test_get_nonexistent_image(self):
         # Check raises a NotFound
         nonexistent_image = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.get_image,
+        self.assertRaises(lib_exc.NotFound, self.client.get_image,
                           nonexistent_image)
diff --git a/tempest/api/compute/keypairs/test_keypairs_negative.py b/tempest/api/compute/keypairs/test_keypairs_negative.py
index 4e06d6c..1586405 100644
--- a/tempest/api/compute/keypairs/test_keypairs_negative.py
+++ b/tempest/api/compute/keypairs/test_keypairs_negative.py
@@ -14,6 +14,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -43,7 +45,7 @@
     def test_keypair_delete_nonexistent_key(self):
         # Non-existent key deletion should throw a proper error
         k_name = data_utils.rand_name("keypair-non-existent-")
-        self.assertRaises(exceptions.NotFound, self.client.delete_keypair,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_keypair,
                           k_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -68,7 +70,7 @@
         k_name = data_utils.rand_name('keypair-')
         self.client.create_keypair(k_name)
         # Now try the same keyname to create another key
-        self.assertRaises(exceptions.Conflict, self._create_keypair,
+        self.assertRaises(lib_exc.Conflict, self._create_keypair,
                           k_name)
         self.client.delete_keypair(k_name)
 
diff --git a/tempest/api/compute/limits/test_absolute_limits_negative.py b/tempest/api/compute/limits/test_absolute_limits_negative.py
index d537d83..9776db3 100644
--- a/tempest/api/compute/limits/test_absolute_limits_negative.py
+++ b/tempest/api/compute/limits/test_absolute_limits_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
-from tempest import exceptions
 from tempest import test
 
 
@@ -51,5 +52,5 @@
 
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server, meta=meta_data)
diff --git a/tempest/api/compute/security_groups/test_security_group_rules_negative.py b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
index d97c404..c8da63f 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules_negative.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute.security_groups import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -46,7 +48,7 @@
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -158,6 +160,6 @@
         # Negative test: Deletion of Security Group rule should be FAIL
         # with non existent id
         non_existent_rule_id = not_existing_id()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group_rule,
                           non_existent_rule_id)
diff --git a/tempest/api/compute/security_groups/test_security_groups_negative.py b/tempest/api/compute/security_groups/test_security_groups_negative.py
index 988482b..a083406 100644
--- a/tempest/api/compute/security_groups/test_security_groups_negative.py
+++ b/tempest/api/compute/security_groups/test_security_groups_negative.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute.security_groups import base
@@ -52,11 +54,11 @@
         # Negative test:Should not be able to GET the details
         # of non-existent Security Group
         non_exist_id = self._generate_a_non_existent_security_group_id()
-        self.assertRaises(exceptions.NotFound, self.client.get_security_group,
+        self.assertRaises(lib_exc.NotFound, self.client.get_security_group,
                           non_exist_id)
 
-    @test.skip_because(bug="1161411",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1161411",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'smoke'])
     @test.services('network')
     def test_security_group_create_with_invalid_group_name(self):
@@ -76,8 +78,8 @@
                           self.client.create_security_group, s_name,
                           s_description)
 
-    @test.skip_because(bug="1161411",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1161411",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'smoke'])
     @test.services('network')
     def test_security_group_create_with_invalid_group_description(self):
@@ -131,7 +133,7 @@
     def test_delete_nonexistent_security_group(self):
         # Negative test:Deletion of a non-existent Security Group should fail
         non_exist_id = self._generate_a_non_existent_security_group_id()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group, non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
@@ -139,7 +141,7 @@
     def test_delete_security_group_without_passing_id(self):
         # Negative test:Deletion of a Security Group with out passing ID
         # should Fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group, '')
 
     @testtools.skipIf(CONF.service_available.neutron,
@@ -193,7 +195,7 @@
         non_exist_id = self._generate_a_non_existent_security_group_id()
         s_name = data_utils.rand_name('sg-')
         s_description = data_utils.rand_name('description-')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_security_group,
                           non_exist_id, name=s_name,
                           description=s_description)
diff --git a/tempest/api/compute/servers/test_delete_server.py b/tempest/api/compute/servers/test_delete_server.py
index 9d1ea9e..7ccec8e 100644
--- a/tempest/api/compute/servers/test_delete_server.py
+++ b/tempest/api/compute/servers/test_delete_server.py
@@ -124,12 +124,12 @@
         device = '/dev/%s' % CONF.compute.volume_device_name
         resp, server = self.create_test_server(wait_until='ACTIVE')
 
-        resp, volume = volumes_client.create_volume(1)
+        volume = volumes_client.create_volume(1)
         self.addCleanup(volumes_client.delete_volume, volume['id'])
         volumes_client.wait_for_volume_status(volume['id'], 'available')
-        resp, body = self.client.attach_volume(server['id'],
-                                               volume['id'],
-                                               device=device)
+        self.client.attach_volume(server['id'],
+                                  volume['id'],
+                                  device=device)
         volumes_client.wait_for_volume_status(volume['id'], 'in-use')
 
         resp, _ = self.client.delete_server(server['id'])
diff --git a/tempest/api/compute/servers/test_instance_actions_negative.py b/tempest/api/compute/servers/test_instance_actions_negative.py
index e92f04c..116191c 100644
--- a/tempest/api/compute/servers/test_instance_actions_negative.py
+++ b/tempest/api/compute/servers/test_instance_actions_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -32,12 +33,12 @@
     def test_list_instance_actions_non_existent_server(self):
         # List actions of the non-existent server id
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_instance_actions,
                           non_existent_server_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_instance_action_invalid_request(self):
         # Get the action details of the provided server with invalid request
-        self.assertRaises(exceptions.NotFound, self.client.get_instance_action,
+        self.assertRaises(lib_exc.NotFound, self.client.get_instance_action,
                           self.server_id, '999')
diff --git a/tempest/api/compute/servers/test_list_server_filters.py b/tempest/api/compute/servers/test_list_server_filters.py
index 7964cf7..cb90873 100644
--- a/tempest/api/compute/servers/test_list_server_filters.py
+++ b/tempest/api/compute/servers/test_list_server_filters.py
@@ -13,11 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.api import utils
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -46,13 +48,13 @@
         # not exist, fail early since the tests won't work...
         try:
             cls.images_client.get_image(cls.image_ref)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             raise RuntimeError("Image %s (image_ref) was not found!" %
                                cls.image_ref)
 
         try:
             cls.images_client.get_image(cls.image_ref_alt)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             raise RuntimeError("Image %s (image_ref_alt) was not found!" %
                                cls.image_ref_alt)
 
@@ -269,8 +271,8 @@
         self.assertNotIn(self.s2_name, map(lambda x: x['name'], servers))
         self.assertNotIn(self.s3_name, map(lambda x: x['name'], servers))
 
-    @test.skip_because(bug="1182883",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1182883",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     def test_list_servers_filtered_by_ip_regex(self):
         # Filter servers by regex ip
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 17e3669..f948a3a 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -17,13 +17,14 @@
 import logging
 import urlparse
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest.common.utils.linux import remote_client
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -100,7 +101,7 @@
         # The server should be power cycled
         self._test_reboot_server('HARD')
 
-    @test.skip_because(bug="1014647")
+    @decorators.skip_because(bug="1014647")
     @test.attr(type='smoke')
     def test_reboot_server_soft(self):
         # The server should be signaled to reboot gracefully
@@ -261,7 +262,7 @@
             if oldest_backup_exist:
                 try:
                     self.os.image_client.delete_image(oldest_backup)
-                except exceptions.NotFound:
+                except lib_exc.NotFound:
                     pass
                 else:
                     LOG.warning("Deletion of oldest backup %s should not have "
@@ -463,7 +464,7 @@
         self.assertEqual(200, resp.status)
         self.assertEqual(server['status'], 'ACTIVE')
         # Locked server is not allowed to be stopped by non-admin user
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.stop, self.server_id)
         resp, server = self.servers_client.unlock_server(self.server_id)
         self.assertEqual(202, resp.status)
diff --git a/tempest/api/compute/servers/test_server_addresses_negative.py b/tempest/api/compute/servers/test_server_addresses_negative.py
index 3087e59..77a041a 100644
--- a/tempest/api/compute/servers/test_server_addresses_negative.py
+++ b/tempest/api/compute/servers/test_server_addresses_negative.py
@@ -13,8 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -32,13 +33,13 @@
     @test.services('network')
     def test_list_server_addresses_invalid_server_id(self):
         # List addresses request should fail if server id not in system
-        self.assertRaises(exceptions.NotFound, self.client.list_addresses,
+        self.assertRaises(lib_exc.NotFound, self.client.list_addresses,
                           '999')
 
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_list_server_addresses_by_network_neg(self):
         # List addresses by network should fail if network name not valid
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_addresses_by_network,
                           self.server['id'], 'invalid')
diff --git a/tempest/api/compute/servers/test_server_group.py b/tempest/api/compute/servers/test_server_group.py
index 0af19c0..fe5dca0 100644
--- a/tempest/api/compute/servers/test_server_group.py
+++ b/tempest/api/compute/servers/test_server_group.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -74,7 +76,7 @@
         policy = ['anti-affinity']
         self._create_delete_server_group(policy)
 
-    @test.skip_because(bug="1324348")
+    @decorators.skip_because(bug="1324348")
     @test.attr(type='gate')
     def test_create_delete_server_group_with_multiple_policies(self):
         # Create and Delete the server-group with multiple policies
diff --git a/tempest/api/compute/servers/test_server_metadata_negative.py b/tempest/api/compute/servers/test_server_metadata_negative.py
index e193677..7fe95dd 100644
--- a/tempest/api/compute/servers/test_server_metadata_negative.py
+++ b/tempest/api/compute/servers/test_server_metadata_negative.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -40,7 +42,7 @@
         for sz in [256, 257, 511, 1023]:
             key = "k" * sz
             meta = {key: 'data1'}
-            self.assertRaises((exceptions.BadRequest, exceptions.OverLimit),
+            self.assertRaises((exceptions.BadRequest, lib_exc.OverLimit),
                               self.create_test_server,
                               meta=meta)
 
@@ -58,7 +60,7 @@
     def test_server_metadata_non_existent_server(self):
         # GET on a non-existent server should not succeed
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_server_metadata_item,
                           non_existent_server_id,
                           'test2')
@@ -67,7 +69,7 @@
     def test_list_server_metadata_non_existent_server(self):
         # List metadata on a non-existent server should not succeed
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_server_metadata,
                           non_existent_server_id)
 
@@ -85,7 +87,7 @@
         # Set metadata on a non-existent server should not succeed
         non_existent_server_id = data_utils.rand_uuid()
         meta = {'meta1': 'data1'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.set_server_metadata,
                           non_existent_server_id,
                           meta)
@@ -95,7 +97,7 @@
         # An update should not happen for a non-existent server
         non_existent_server_id = data_utils.rand_uuid()
         meta = {'key1': 'value1', 'key2': 'value2'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_server_metadata,
                           non_existent_server_id,
                           meta)
@@ -112,7 +114,7 @@
     def test_delete_metadata_non_existent_server(self):
         # Should not be able to delete metadata item from a non-existent server
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_server_metadata_item,
                           non_existent_server_id,
                           'd')
@@ -130,14 +132,14 @@
         req_metadata = {}
         for num in range(1, quota_metadata + 2):
             req_metadata['key' + str(num)] = 'val' + str(num)
-        self.assertRaises((exceptions.OverLimit, exceptions.Unauthorized),
+        self.assertRaises((lib_exc.OverLimit, lib_exc.Unauthorized),
                           self.client.set_server_metadata,
                           self.server_id, req_metadata)
 
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised while exceeding metadata items limit for
         # tenant.
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.update_server_metadata,
                           self.server_id, req_metadata)
 
diff --git a/tempest/api/compute/servers/test_server_personality.py b/tempest/api/compute/servers/test_server_personality.py
index c6d48bc..bd3ebb0 100644
--- a/tempest/api/compute/servers/test_server_personality.py
+++ b/tempest/api/compute/servers/test_server_personality.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 import base64
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,7 +44,7 @@
                                 'contents': base64.b64encode(file_contents)})
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server, personality=personality)
 
     @test.attr(type='gate')
diff --git a/tempest/api/compute/servers/test_server_rescue_negative.py b/tempest/api/compute/servers/test_server_rescue_negative.py
index f1e2f7f..6780455 100644
--- a/tempest/api/compute/servers/test_server_rescue_negative.py
+++ b/tempest/api/compute/servers/test_server_rescue_negative.py
@@ -12,12 +12,13 @@
 #    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 import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -49,7 +50,7 @@
         cls.servers_client.wait_for_server_status(cls.server_id, 'ACTIVE')
 
     def _create_volume(self):
-        resp, volume = self.volumes_extensions_client.create_volume(
+        volume = self.volumes_extensions_client.create_volume(
             1, display_name=data_utils.rand_name(
                 self.__class__.__name__ + '_volume'))
         self.addCleanup(self.delete_volume, volume['id'])
@@ -81,26 +82,26 @@
         self.addCleanup(self._unpause, self.server_id)
         self.assertEqual(202, resp.status)
         self.servers_client.wait_for_server_status(self.server_id, 'PAUSED')
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.rescue_server,
                           self.server_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_rescued_vm_reboot(self):
-        self.assertRaises(exceptions.Conflict, self.servers_client.reboot,
+        self.assertRaises(lib_exc.Conflict, self.servers_client.reboot,
                           self.rescue_id, 'HARD')
 
     @test.attr(type=['negative', 'gate'])
     def test_rescue_non_existent_server(self):
         # Rescue a non-existing server
         non_existent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.servers_client.rescue_server,
                           non_existent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_rescued_vm_rebuild(self):
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.rebuild,
                           self.rescue_id,
                           self.image_ref_alt)
@@ -117,7 +118,7 @@
         self.addCleanup(self._unrescue, self.server_id)
 
         # Attach the volume to the server
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.attach_volume,
                           self.server_id,
                           volume['id'],
@@ -144,7 +145,7 @@
         self.addCleanup(self._unrescue, self.server_id)
 
         # Detach the volume from the server expecting failure
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.detach_volume,
                           self.server_id,
                           volume['id'])
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index b703cfe..845a71e 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -15,6 +15,7 @@
 
 import sys
 
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
@@ -108,7 +109,7 @@
     def test_resize_nonexistent_server(self):
         # Resize a non-existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.resize,
                           nonexistent_server, self.flavor_ref)
 
@@ -133,7 +134,7 @@
     def test_reboot_non_existent_server(self):
         # Reboot a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.reboot,
+        self.assertRaises(lib_exc.NotFound, self.client.reboot,
                           nonexistent_server, 'SOFT')
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -143,7 +144,7 @@
         # Pause a paused server.
         self.client.pause_server(self.server_id)
         self.client.wait_for_server_status(self.server_id, 'PAUSED')
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.pause_server,
                           self.server_id)
         self.client.unpause_server(self.server_id)
@@ -155,17 +156,17 @@
         self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.rebuild,
                           server['id'], self.image_ref_alt)
-        self.assertRaises(exceptions.NotFound, self.client.reboot,
+        self.assertRaises(lib_exc.NotFound, self.client.reboot,
                           server['id'], 'SOFT')
 
     @test.attr(type=['negative', 'gate'])
     def test_rebuild_non_existent_server(self):
         # Rebuild a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.rebuild,
                           nonexistent_server,
                           self.image_ref_alt)
@@ -210,7 +211,7 @@
         # Pass really long metadata while creating a server
 
         metadata = {'a': 'b' * 260}
-        self.assertRaises((exceptions.BadRequest, exceptions.OverLimit),
+        self.assertRaises((exceptions.BadRequest, lib_exc.OverLimit),
                           self.create_test_server,
                           meta=metadata)
 
@@ -221,7 +222,7 @@
         server_name = data_utils.rand_name('server')
         new_name = data_utils.rand_name('server') + '_updated'
 
-        self.assertRaises(exceptions.NotFound, self.client.update_server,
+        self.assertRaises(lib_exc.NotFound, self.client.update_server,
                           server_name, name=new_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -239,7 +240,7 @@
         # Update name of a server that belongs to another tenant
 
         new_name = self.server_id + '_new'
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.update_server, self.server_id,
                           name=new_name)
 
@@ -258,13 +259,13 @@
         # Delete a non existent server
 
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.delete_server,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_server,
                           nonexistent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_a_server_of_another_tenant(self):
         # Delete a server that belongs to another tenant
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.delete_server,
                           self.server_id)
 
@@ -272,13 +273,13 @@
     def test_delete_server_pass_negative_id(self):
         # Pass an invalid string parameter to delete server
 
-        self.assertRaises(exceptions.NotFound, self.client.delete_server, -1)
+        self.assertRaises(lib_exc.NotFound, self.client.delete_server, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_server_pass_id_exceeding_length_limit(self):
         # Pass a server ID that exceeds length limit to delete server
 
-        self.assertRaises(exceptions.NotFound, self.client.delete_server,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_server,
                           sys.maxint + 1)
 
     @test.attr(type=['negative', 'gate'])
@@ -294,14 +295,14 @@
     def test_get_non_existent_server(self):
         # Get a non existent server details
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.get_server,
+        self.assertRaises(lib_exc.NotFound, self.client.get_server,
                           nonexistent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_stop_non_existent_server(self):
         # Stop a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.servers_client.stop,
+        self.assertRaises(lib_exc.NotFound, self.servers_client.stop,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -310,7 +311,7 @@
     def test_pause_non_existent_server(self):
         # pause a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.pause_server,
+        self.assertRaises(lib_exc.NotFound, self.client.pause_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -319,7 +320,7 @@
     def test_unpause_non_existent_server(self):
         # unpause a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.unpause_server,
+        self.assertRaises(lib_exc.NotFound, self.client.unpause_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -327,7 +328,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_unpause_server_invalid_state(self):
         # unpause an active server.
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.unpause_server,
                           self.server_id)
 
@@ -337,7 +338,7 @@
     def test_suspend_non_existent_server(self):
         # suspend a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.suspend_server,
+        self.assertRaises(lib_exc.NotFound, self.client.suspend_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.suspend,
@@ -348,7 +349,7 @@
         resp, _ = self.client.suspend_server(self.server_id)
         self.assertEqual(202, resp.status)
         self.client.wait_for_server_status(self.server_id, 'SUSPENDED')
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.suspend_server,
                           self.server_id)
         self.client.resume_server(self.server_id)
@@ -359,7 +360,7 @@
     def test_resume_non_existent_server(self):
         # resume a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.resume_server,
+        self.assertRaises(lib_exc.NotFound, self.client.resume_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.suspend,
@@ -367,7 +368,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_resume_server_invalid_state(self):
         # resume an active server.
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.resume_server,
                           self.server_id)
 
@@ -375,7 +376,7 @@
     def test_get_console_output_of_non_existent_server(self):
         # get the console output for a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_console_output,
                           nonexistent_server, 10)
 
@@ -383,7 +384,7 @@
     def test_force_delete_nonexistent_server_id(self):
         # force-delete a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.force_delete_server,
                           nonexistent_server)
 
@@ -391,14 +392,14 @@
     def test_restore_nonexistent_server_id(self):
         # restore-delete a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.restore_soft_deleted_server,
                           nonexistent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_restore_server_invalid_state(self):
         # we can only restore-delete a server in 'soft-delete' state
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.restore_soft_deleted_server,
                           self.server_id)
 
@@ -408,7 +409,7 @@
     def test_shelve_non_existent_server(self):
         # shelve a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.shelve_server,
+        self.assertRaises(lib_exc.NotFound, self.client.shelve_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.shelve,
@@ -435,7 +436,7 @@
         self.assertEqual(1, len(images))
         self.assertEqual(image_name, images[0]['name'])
 
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.shelve_server,
                           self.server_id)
 
@@ -447,7 +448,7 @@
     def test_unshelve_non_existent_server(self):
         # unshelve a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.unshelve_server,
+        self.assertRaises(lib_exc.NotFound, self.client.unshelve_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.shelve,
@@ -455,6 +456,6 @@
     @test.attr(type=['negative', 'gate'])
     def test_unshelve_server_invalid_state(self):
         # unshelve an active server.
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.unshelve_server,
                           self.server_id)
diff --git a/tempest/api/compute/servers/test_virtual_interfaces.py b/tempest/api/compute/servers/test_virtual_interfaces.py
index 48af084..e07a7ed 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import decorators
 
 from tempest.api.compute import base
 from tempest import config
@@ -33,8 +34,8 @@
         resp, server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
-    @test.skip_because(bug="1183436",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1183436",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     @test.services('network')
     def test_list_virtual_interfaces(self):
diff --git a/tempest/api/compute/servers/test_virtual_interfaces_negative.py b/tempest/api/compute/servers/test_virtual_interfaces_negative.py
index e81ccc6..d66b7ba 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces_negative.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces_negative.py
@@ -15,8 +15,9 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -35,6 +36,6 @@
         # Negative test: Should not be able to GET virtual interfaces
         # for an invalid server_id
         invalid_server_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_virtual_interfaces,
                           invalid_server_id)
diff --git a/tempest/api/compute/test_authorization.py b/tempest/api/compute/test_authorization.py
index cdbaee8..16b7ed2 100644
--- a/tempest/api/compute/test_authorization.py
+++ b/tempest/api/compute/test_authorization.py
@@ -15,6 +15,8 @@
 
 import StringIO
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest import clients
 from tempest.common.utils import data_utils
@@ -93,32 +95,32 @@
     @test.attr(type='gate')
     def test_get_server_for_alt_account_fails(self):
         # A GET request for a server on another user's account should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.get_server,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.get_server,
                           self.server['id'])
 
     @test.attr(type='gate')
     def test_delete_server_for_alt_account_fails(self):
         # A DELETE request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.delete_server,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.delete_server,
                           self.server['id'])
 
     @test.attr(type='gate')
     def test_update_server_for_alt_account_fails(self):
         # An update server request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.update_server,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.update_server,
                           self.server['id'], name='test')
 
     @test.attr(type='gate')
     def test_list_server_addresses_for_alt_account_fails(self):
         # A list addresses request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.list_addresses,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.list_addresses,
                           self.server['id'])
 
     @test.attr(type='gate')
     def test_list_server_addresses_by_network_for_alt_account_fails(self):
         # A list address/network request for another user's server should fail
         server_id = self.server['id']
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.list_addresses_by_network, server_id,
                           'public')
 
@@ -135,31 +137,31 @@
     @test.attr(type='gate')
     def test_change_password_for_alt_account_fails(self):
         # A change password request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.change_password,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.change_password,
                           self.server['id'], 'newpass')
 
     @test.attr(type='gate')
     def test_reboot_server_for_alt_account_fails(self):
         # A reboot request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.reboot,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.reboot,
                           self.server['id'], 'HARD')
 
     @test.attr(type='gate')
     def test_rebuild_server_for_alt_account_fails(self):
         # A rebuild request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.rebuild,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.rebuild,
                           self.server['id'], self.image_ref_alt)
 
     @test.attr(type='gate')
     def test_resize_server_for_alt_account_fails(self):
         # A resize request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.resize,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.resize,
                           self.server['id'], self.flavor_ref_alt)
 
     @test.attr(type='gate')
     def test_create_image_for_alt_account_fails(self):
         # A create image request for another user's server should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.create_image,
                           self.server['id'], 'testImage')
 
@@ -208,27 +210,27 @@
     @test.attr(type='gate')
     def test_get_keypair_of_alt_account_fails(self):
         # A GET request for another user's keypair should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_keypairs_client.get_keypair,
                           self.keypairname)
 
     @test.attr(type='gate')
     def test_delete_keypair_of_alt_account_fails(self):
         # A DELETE request for another user's keypair should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_keypairs_client.delete_keypair,
                           self.keypairname)
 
     @test.attr(type='gate')
     def test_get_image_for_alt_account_fails(self):
         # A GET request for an image on another user's account should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.get_image, self.image['id'])
 
     @test.attr(type='gate')
     def test_delete_image_for_alt_account_fails(self):
         # A DELETE request for another user's image should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.delete_image,
                           self.image['id'])
 
@@ -260,14 +262,14 @@
     @test.attr(type='gate')
     def test_get_security_group_of_alt_account_fails(self):
         # A GET request for another user's security group should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_security_client.get_security_group,
                           self.security_group['id'])
 
     @test.attr(type='gate')
     def test_delete_security_group_of_alt_account_fails(self):
         # A DELETE request for another user's security group should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_security_client.delete_security_group,
                           self.security_group['id'])
 
@@ -305,7 +307,7 @@
     def test_delete_security_group_rule_of_alt_account_fails(self):
         # A DELETE request for another user's security group rule
         # should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_security_client.delete_security_group_rule,
                           self.rule['id'])
 
@@ -313,7 +315,7 @@
     def test_set_metadata_of_alt_account_server_fails(self):
         # A set metadata for another user's server should fail
         req_metadata = {'meta1': 'data1', 'meta2': 'data2'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.set_server_metadata,
                           self.server['id'],
                           req_metadata)
@@ -322,7 +324,7 @@
     def test_set_metadata_of_alt_account_image_fails(self):
         # A set metadata for another user's image should fail
         req_metadata = {'meta1': 'value1', 'meta2': 'value2'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.set_image_metadata,
                           self.image['id'], req_metadata)
 
@@ -333,7 +335,7 @@
         self.client.set_server_metadata(self.server['id'], req_metadata)
         self.addCleanup(self.client.delete_server_metadata_item,
                         self.server['id'], 'meta1')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.get_server_metadata_item,
                           self.server['id'], 'meta1')
 
@@ -345,7 +347,7 @@
                         self.image['id'], 'meta1')
         self.images_client.set_image_metadata(self.image['id'],
                                               req_metadata)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.get_image_metadata_item,
                           self.image['id'], 'meta1')
 
@@ -356,7 +358,7 @@
         self.addCleanup(self.client.delete_server_metadata_item,
                         self.server['id'], 'meta1')
         self.client.set_server_metadata(self.server['id'], req_metadata)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.delete_server_metadata_item,
                           self.server['id'], 'meta1')
 
@@ -368,13 +370,13 @@
                         self.image['id'], 'meta1')
         self.images_client.set_image_metadata(self.image['id'],
                                               req_metadata)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.delete_image_metadata_item,
                           self.image['id'], 'meta1')
 
     @test.attr(type='gate')
     def test_get_console_output_of_alt_account_server_fails(self):
         # A Get Console Output for another user's server should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.get_console_output,
                           self.server['id'], 10)
diff --git a/tempest/api/compute/test_live_block_migration.py b/tempest/api/compute/test_live_block_migration.py
index 180dffd..eb71d6d 100644
--- a/tempest/api/compute/test_live_block_migration.py
+++ b/tempest/api/compute/test_live_block_migration.py
@@ -77,7 +77,7 @@
             return server_id
 
     def _volume_clean_up(self, server_id, volume_id):
-        resp, body = self.volumes_client.get_volume(volume_id)
+        body = self.volumes_client.get_volume(volume_id)
         if body['status'] == 'in-use':
             self.servers_client.detach_volume(server_id, volume_id)
             self.volumes_client.wait_for_volume_status(volume_id, 'available')
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index 7fef52f..40b93a8 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -68,7 +68,7 @@
                                                    'available')
 
         # Attach the volume to the server
-        _, self.attachment = self.servers_client.attach_volume(
+        self.attachment = self.servers_client.attach_volume(
             self.server['id'],
             self.volume['id'],
             device='/dev/%s' % self.device)
@@ -116,13 +116,13 @@
         # Create Server, Volume and attach that Volume to Server
         self._create_and_attach()
         # List Volume attachment of the server
-        _, body = self.servers_client.list_volume_attachments(
+        body = self.servers_client.list_volume_attachments(
             self.server['id'])
         self.assertEqual(1, len(body))
         self.assertIn(self.attachment, body)
 
         # Get Volume attachment of the server
-        _, body = self.servers_client.get_volume_attachment(
+        body = self.servers_client.get_volume_attachment(
             self.server['id'],
             self.attachment['id'])
         self.assertEqual(self.server['id'], body['serverId'])
diff --git a/tempest/api/compute/volumes/test_volumes_get.py b/tempest/api/compute/volumes/test_volumes_get.py
index d441427..53f5ac0 100644
--- a/tempest/api/compute/volumes/test_volumes_get.py
+++ b/tempest/api/compute/volumes/test_volumes_get.py
@@ -41,11 +41,10 @@
         v_name = data_utils.rand_name('Volume-%s-') % self._interface
         metadata = {'Type': 'work'}
         # Create volume
-        resp, volume = self.client.create_volume(size=1,
-                                                 display_name=v_name,
-                                                 metadata=metadata)
+        volume = self.client.create_volume(size=1,
+                                           display_name=v_name,
+                                           metadata=metadata)
         self.addCleanup(self.delete_volume, volume['id'])
-        self.assertEqual(200, resp.status)
         self.assertIn('id', volume)
         self.assertIn('displayName', volume)
         self.assertEqual(volume['displayName'], v_name,
@@ -56,8 +55,7 @@
         # Wait for Volume status to become ACTIVE
         self.client.wait_for_volume_status(volume['id'], 'available')
         # GET Volume
-        resp, fetched_volume = self.client.get_volume(volume['id'])
-        self.assertEqual(200, resp.status)
+        fetched_volume = self.client.get_volume(volume['id'])
         # Verification of details of fetched Volume
         self.assertEqual(v_name,
                          fetched_volume['displayName'],
diff --git a/tempest/api/compute/volumes/test_volumes_list.py b/tempest/api/compute/volumes/test_volumes_list.py
index 6bf9519..c0ac99b 100644
--- a/tempest/api/compute/volumes/test_volumes_list.py
+++ b/tempest/api/compute/volumes/test_volumes_list.py
@@ -45,11 +45,11 @@
             v_name = data_utils.rand_name('volume-%s' % cls._interface)
             metadata = {'Type': 'work'}
             try:
-                resp, volume = cls.client.create_volume(size=1,
-                                                        display_name=v_name,
-                                                        metadata=metadata)
+                volume = cls.client.create_volume(size=1,
+                                                  display_name=v_name,
+                                                  metadata=metadata)
                 cls.client.wait_for_volume_status(volume['id'], 'available')
-                resp, volume = cls.client.get_volume(volume['id'])
+                volume = cls.client.get_volume(volume['id'])
                 cls.volume_list.append(volume)
                 cls.volume_id_list.append(volume['id'])
             except Exception:
@@ -79,8 +79,7 @@
     def test_volume_list(self):
         # Should return the list of Volumes
         # Fetch all Volumes
-        resp, fetched_list = self.client.list_volumes()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_volumes()
         # Now check if all the Volumes created in setup are in fetched list
         missing_volumes = [
             v for v in self.volume_list if v not in fetched_list
@@ -95,8 +94,7 @@
     def test_volume_list_with_details(self):
         # Should return the list of Volumes with details
         # Fetch all Volumes
-        resp, fetched_list = self.client.list_volumes_with_detail()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_volumes_with_detail()
         # Now check if all the Volumes created in setup are in fetched list
         missing_volumes = [
             v for v in self.volume_list if v not in fetched_list
@@ -111,8 +109,7 @@
     def test_volume_list_param_limit(self):
         # Return the list of volumes based on limit set
         params = {'limit': 2}
-        resp, fetched_vol_list = self.client.list_volumes(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes(params=params)
 
         self.assertEqual(len(fetched_vol_list), params['limit'],
                          "Failed to list volumes by limit set")
@@ -121,9 +118,7 @@
     def test_volume_list_with_detail_param_limit(self):
         # Return the list of volumes with details based on limit set.
         params = {'limit': 2}
-        resp, fetched_vol_list = \
-            self.client.list_volumes_with_detail(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes_with_detail(params=params)
 
         self.assertEqual(len(fetched_vol_list), params['limit'],
                          "Failed to list volume details by limit set")
@@ -132,10 +127,9 @@
     def test_volume_list_param_offset_and_limit(self):
         # Return the list of volumes based on offset and limit set.
         # get all volumes list
-        response, all_vol_list = self.client.list_volumes()
+        all_vol_list = self.client.list_volumes()
         params = {'offset': 1, 'limit': 1}
-        resp, fetched_vol_list = self.client.list_volumes(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes(params=params)
 
         # Validating length of the fetched volumes
         self.assertEqual(len(fetched_vol_list), params['limit'],
@@ -150,11 +144,9 @@
     def test_volume_list_with_detail_param_offset_and_limit(self):
         # Return the list of volumes details based on offset and limit set.
         # get all volumes list
-        response, all_vol_list = self.client.list_volumes_with_detail()
+        all_vol_list = self.client.list_volumes_with_detail()
         params = {'offset': 1, 'limit': 1}
-        resp, fetched_vol_list = \
-            self.client.list_volumes_with_detail(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes_with_detail(params=params)
 
         # Validating length of the fetched volumes
         self.assertEqual(len(fetched_vol_list), params['limit'],
diff --git a/tempest/api/compute/volumes/test_volumes_negative.py b/tempest/api/compute/volumes/test_volumes_negative.py
index f0f9879..53253c9 100644
--- a/tempest/api/compute/volumes/test_volumes_negative.py
+++ b/tempest/api/compute/volumes/test_volumes_negative.py
@@ -15,6 +15,8 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -39,7 +41,7 @@
         # Negative: Should not be able to get details of nonexistent volume
         # Creating a nonexistent volume id
         # Trying to GET a non existent volume
-        self.assertRaises(exceptions.NotFound, self.client.get_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
@@ -47,7 +49,7 @@
         # Negative: Should not be able to delete nonexistent Volume
         # Creating nonexistent volume id
         # Trying to DELETE a non existent volume
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
@@ -79,22 +81,22 @@
     @test.attr(type=['negative', 'gate'])
     def test_get_invalid_volume_id(self):
         # Negative: Should not be able to get volume with invalid id
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_volume, '#$%%&^&^')
 
     @test.attr(type=['negative', 'gate'])
     def test_get_volume_without_passing_volume_id(self):
         # Negative: Should not be able to get volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.get_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_invalid_volume_id(self):
         # Negative: Should not be able to delete volume when invalid ID is
         # passed
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_volume, '!@#$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_volume_without_passing_volume_id(self):
         # Negative: Should not be able to delete volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume, '')
diff --git a/tempest/api/data_processing/base.py b/tempest/api/data_processing/base.py
index 2ec1017..4c53a57 100644
--- a/tempest/api/data_processing/base.py
+++ b/tempest/api/data_processing/base.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest import config
-from tempest import exceptions
 import tempest.test
 
 
@@ -63,7 +64,7 @@
         for resource_id in resource_id_list:
             try:
                 method(resource_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # ignore errors while auto removing created resource
                 pass
 
@@ -77,12 +78,12 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_node_group_template(name, plugin_name,
-                                                             hadoop_version,
-                                                             node_processes,
-                                                             flavor_id,
-                                                             node_configs,
-                                                             **kwargs)
+        resp_body = cls.client.create_node_group_template(name, plugin_name,
+                                                          hadoop_version,
+                                                          node_processes,
+                                                          flavor_id,
+                                                          node_configs,
+                                                          **kwargs)
         # store id of created node group template
         cls._node_group_templates.append(resp_body['id'])
 
@@ -97,11 +98,11 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_cluster_template(name, plugin_name,
-                                                          hadoop_version,
-                                                          node_groups,
-                                                          cluster_configs,
-                                                          **kwargs)
+        resp_body = cls.client.create_cluster_template(name, plugin_name,
+                                                       hadoop_version,
+                                                       node_groups,
+                                                       cluster_configs,
+                                                       **kwargs)
         # store id of created cluster template
         cls._cluster_templates.append(resp_body['id'])
 
@@ -115,7 +116,7 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_data_source(name, type, url, **kwargs)
+        resp_body = cls.client.create_data_source(name, type, url, **kwargs)
         # store id of created data source
         cls._data_sources.append(resp_body['id'])
 
@@ -128,7 +129,7 @@
         It returns created object. All resources created in this method will
         be automatically removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_job_binary_internal(name, data)
+        resp_body = cls.client.create_job_binary_internal(name, data)
         # store id of created job binary internal
         cls._job_binary_internals.append(resp_body['id'])
 
@@ -142,7 +143,7 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_job_binary(name, url, extra, **kwargs)
+        resp_body = cls.client.create_job_binary(name, url, extra, **kwargs)
         # store id of created job binary
         cls._job_binaries.append(resp_body['id'])
 
@@ -156,8 +157,8 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_job(name,
-                                             job_type, mains, libs, **kwargs)
+        resp_body = cls.client.create_job(name,
+                                          job_type, mains, libs, **kwargs)
         # store id of created job
         cls._jobs.append(resp_body['id'])
 
diff --git a/tempest/api/data_processing/test_cluster_templates.py b/tempest/api/data_processing/test_cluster_templates.py
index 537f90c..422ea5b 100644
--- a/tempest/api/data_processing/test_cluster_templates.py
+++ b/tempest/api/data_processing/test_cluster_templates.py
@@ -120,7 +120,7 @@
         template_info = self._create_cluster_template()
 
         # check for cluster template in list
-        _, templates = self.client.list_cluster_templates()
+        templates = self.client.list_cluster_templates()
         templates_info = [(template['id'], template['name'])
                           for template in templates]
         self.assertIn(template_info, templates_info)
@@ -130,7 +130,7 @@
         template_id, template_name = self._create_cluster_template()
 
         # check cluster template fetch by id
-        _, template = self.client.get_cluster_template(template_id)
+        template = self.client.get_cluster_template(template_id)
         self.assertEqual(template_name, template['name'])
         self.assertDictContainsSubset(self.cluster_template, template)
 
diff --git a/tempest/api/data_processing/test_data_sources.py b/tempest/api/data_processing/test_data_sources.py
index 3650751..a50f44b 100644
--- a/tempest/api/data_processing/test_data_sources.py
+++ b/tempest/api/data_processing/test_data_sources.py
@@ -68,13 +68,13 @@
 
     def _list_data_sources(self, source_info):
         # check for data source in list
-        _, sources = self.client.list_data_sources()
+        sources = self.client.list_data_sources()
         sources_info = [(source['id'], source['name']) for source in sources]
         self.assertIn(source_info, sources_info)
 
     def _get_data_source(self, source_id, source_name, source_body):
         # check data source fetch by id
-        _, source = self.client.get_data_source(source_id)
+        source = self.client.get_data_source(source_id)
         self.assertEqual(source_name, source['name'])
         self.assertDictContainsSubset(source_body, source)
 
diff --git a/tempest/api/data_processing/test_job_binaries.py b/tempest/api/data_processing/test_job_binaries.py
index d006991..2f6d998 100644
--- a/tempest/api/data_processing/test_job_binaries.py
+++ b/tempest/api/data_processing/test_job_binaries.py
@@ -78,7 +78,7 @@
         binary_info = self._create_job_binary(self.swift_job_binary_with_extra)
 
         # check for job binary in list
-        _, binaries = self.client.list_job_binaries()
+        binaries = self.client.list_job_binaries()
         binaries_info = [(binary['id'], binary['name']) for binary in binaries]
         self.assertIn(binary_info, binaries_info)
 
@@ -88,7 +88,7 @@
             self._create_job_binary(self.swift_job_binary_with_extra))
 
         # check job binary fetch by id
-        _, binary = self.client.get_job_binary(binary_id)
+        binary = self.client.get_job_binary(binary_id)
         self.assertEqual(binary_name, binary['name'])
         self.assertDictContainsSubset(self.swift_job_binary, binary)
 
@@ -109,7 +109,7 @@
         binary_info = self._create_job_binary(self.internal_db_job_binary)
 
         # check for job binary in list
-        _, binaries = self.client.list_job_binaries()
+        binaries = self.client.list_job_binaries()
         binaries_info = [(binary['id'], binary['name']) for binary in binaries]
         self.assertIn(binary_info, binaries_info)
 
@@ -119,7 +119,7 @@
             self._create_job_binary(self.internal_db_job_binary))
 
         # check job binary fetch by id
-        _, binary = self.client.get_job_binary(binary_id)
+        binary = self.client.get_job_binary(binary_id)
         self.assertEqual(binary_name, binary['name'])
         self.assertDictContainsSubset(self.internal_db_job_binary, binary)
 
diff --git a/tempest/api/data_processing/test_job_binary_internals.py b/tempest/api/data_processing/test_job_binary_internals.py
index 7e99867..b8121a0 100644
--- a/tempest/api/data_processing/test_job_binary_internals.py
+++ b/tempest/api/data_processing/test_job_binary_internals.py
@@ -55,7 +55,7 @@
         binary_info = self._create_job_binary_internal()
 
         # check for job binary internal in list
-        _, binaries = self.client.list_job_binary_internals()
+        binaries = self.client.list_job_binary_internals()
         binaries_info = [(binary['id'], binary['name']) for binary in binaries]
         self.assertIn(binary_info, binaries_info)
 
@@ -64,7 +64,7 @@
         binary_id, binary_name = self._create_job_binary_internal()
 
         # check job binary internal fetch by id
-        _, binary = self.client.get_job_binary_internal(binary_id)
+        binary = self.client.get_job_binary_internal(binary_id)
         self.assertEqual(binary_name, binary['name'])
 
     @test.attr(type='smoke')
diff --git a/tempest/api/data_processing/test_jobs.py b/tempest/api/data_processing/test_jobs.py
index 5af2eef..a7beb0e 100644
--- a/tempest/api/data_processing/test_jobs.py
+++ b/tempest/api/data_processing/test_jobs.py
@@ -69,7 +69,7 @@
         job_info = self._create_job()
 
         # check for job in list
-        _, jobs = self.client.list_jobs()
+        jobs = self.client.list_jobs()
         jobs_info = [(job['id'], job['name']) for job in jobs]
         self.assertIn(job_info, jobs_info)
 
@@ -78,7 +78,7 @@
         job_id, job_name = self._create_job()
 
         # check job fetch by id
-        _, job = self.client.get_job(job_id)
+        job = self.client.get_job(job_id)
         self.assertEqual(job_name, job['name'])
 
     @test.attr(type='smoke')
diff --git a/tempest/api/data_processing/test_node_group_templates.py b/tempest/api/data_processing/test_node_group_templates.py
index f3f59fc..d37e910 100644
--- a/tempest/api/data_processing/test_node_group_templates.py
+++ b/tempest/api/data_processing/test_node_group_templates.py
@@ -69,7 +69,7 @@
         template_info = self._create_node_group_template()
 
         # check for node group template in list
-        _, templates = self.client.list_node_group_templates()
+        templates = self.client.list_node_group_templates()
         templates_info = [(template['id'], template['name'])
                           for template in templates]
         self.assertIn(template_info, templates_info)
@@ -79,7 +79,7 @@
         template_id, template_name = self._create_node_group_template()
 
         # check node group template fetch by id
-        _, template = self.client.get_node_group_template(template_id)
+        template = self.client.get_node_group_template(template_id)
         self.assertEqual(template_name, template['name'])
         self.assertDictContainsSubset(self.node_group_template, template)
 
diff --git a/tempest/api/data_processing/test_plugins.py b/tempest/api/data_processing/test_plugins.py
index 4b4ec48..8c9b720 100644
--- a/tempest/api/data_processing/test_plugins.py
+++ b/tempest/api/data_processing/test_plugins.py
@@ -25,7 +25,7 @@
 
         It ensures main plugins availability.
         """
-        _, plugins = self.client.list_plugins()
+        plugins = self.client.list_plugins()
         plugins_names = [plugin['name'] for plugin in plugins]
         for enabled_plugin in CONF.data_processing_feature_enabled.plugins:
             self.assertIn(enabled_plugin, plugins_names)
@@ -39,12 +39,12 @@
     @test.attr(type='smoke')
     def test_plugin_get(self):
         for plugin_name in self._list_all_plugin_names():
-            _, plugin = self.client.get_plugin(plugin_name)
+            plugin = self.client.get_plugin(plugin_name)
             self.assertEqual(plugin_name, plugin['name'])
 
             for plugin_version in plugin['versions']:
-                _, detailed_plugin = self.client.get_plugin(plugin_name,
-                                                            plugin_version)
+                detailed_plugin = self.client.get_plugin(plugin_name,
+                                                         plugin_version)
                 self.assertEqual(plugin_name, detailed_plugin['name'])
 
                 # check that required image tags contains name and version
diff --git a/tempest/api/database/flavors/test_flavors_negative.py b/tempest/api/database/flavors/test_flavors_negative.py
index 9f14cce..c6acacf 100644
--- a/tempest/api/database/flavors/test_flavors_negative.py
+++ b/tempest/api/database/flavors/test_flavors_negative.py
@@ -13,8 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.database import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -28,5 +29,5 @@
     @test.attr(type=['negative', 'gate'])
     def test_get_non_existent_db_flavor(self):
         # flavor details are not returned for non-existent flavors
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_db_flavor_details, -1)
diff --git a/tempest/api/identity/admin/test_roles_negative.py b/tempest/api/identity/admin/test_roles_negative.py
index 58f726a..789e8b6 100644
--- a/tempest/api/identity/admin/test_roles_negative.py
+++ b/tempest/api/identity/admin/test_roles_negative.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.identity import base
@@ -35,7 +36,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_list_roles_by_unauthorized_user(self):
         # Non-administrator user should not be able to list roles
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_roles)
 
     @test.attr(type=['negative', 'gate'])
@@ -43,7 +44,7 @@
         # Request to list roles without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.list_roles)
+        self.assertRaises(lib_exc.Unauthorized, self.client.list_roles)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
@@ -55,7 +56,7 @@
     def test_create_role_by_unauthorized_user(self):
         # Non-administrator user should not be able to create role
         role_name = data_utils.rand_name(name='role-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_role, role_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -64,7 +65,7 @@
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
         role_name = data_utils.rand_name(name='role-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.create_role, role_name)
         self.client.auth_provider.clear_auth()
 
@@ -75,7 +76,7 @@
         body = self.client.create_role(role_name)
         role1_id = body.get('id')
         self.addCleanup(self.client.delete_role, role1_id)
-        self.assertRaises(exceptions.Conflict, self.client.create_role,
+        self.assertRaises(lib_exc.Conflict, self.client.create_role,
                           role_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -85,7 +86,7 @@
         body = self.client.create_role(role_name)
         self.data.roles.append(body)
         role_id = body.get('id')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_role, role_id)
 
     @test.attr(type=['negative', 'gate'])
@@ -97,7 +98,7 @@
         role_id = body.get('id')
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.delete_role,
                           role_id)
         self.client.auth_provider.clear_auth()
@@ -106,7 +107,7 @@
     def test_delete_role_non_existent(self):
         # Attempt to delete a non existent role should fail
         non_existent_role = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.delete_role,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_role,
                           non_existent_role)
 
     @test.attr(type=['negative', 'gate'])
@@ -114,7 +115,7 @@
         # Non-administrator user should not be authorized to
         # assign a role to user
         (user, tenant, role) = self._get_role_params()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.assign_user_role,
                           tenant['id'], user['id'], role['id'])
 
@@ -124,7 +125,7 @@
         (user, tenant, role) = self._get_role_params()
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.assign_user_role, tenant['id'],
                           user['id'], role['id'])
         self.client.auth_provider.clear_auth()
@@ -134,7 +135,7 @@
         # Attempt to assign a non existent role to user should fail
         (user, tenant, role) = self._get_role_params()
         non_existent_role = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.assign_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.assign_user_role,
                           tenant['id'], user['id'], non_existent_role)
 
     @test.attr(type=['negative', 'gate'])
@@ -142,7 +143,7 @@
         # Attempt to assign a role on a non existent tenant should fail
         (user, tenant, role) = self._get_role_params()
         non_existent_tenant = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.assign_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.assign_user_role,
                           non_existent_tenant, user['id'], role['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -150,7 +151,7 @@
         # Duplicate user role should not get assigned
         (user, tenant, role) = self._get_role_params()
         self.client.assign_user_role(tenant['id'], user['id'], role['id'])
-        self.assertRaises(exceptions.Conflict, self.client.assign_user_role,
+        self.assertRaises(lib_exc.Conflict, self.client.assign_user_role,
                           tenant['id'], user['id'], role['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -161,7 +162,7 @@
         self.client.assign_user_role(tenant['id'],
                                      user['id'],
                                      role['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.remove_user_role,
                           tenant['id'], user['id'], role['id'])
 
@@ -174,7 +175,7 @@
                                      role['id'])
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.remove_user_role, tenant['id'],
                           user['id'], role['id'])
         self.client.auth_provider.clear_auth()
@@ -187,7 +188,7 @@
                                      user['id'],
                                      role['id'])
         non_existent_role = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.remove_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.remove_user_role,
                           tenant['id'], user['id'], non_existent_role)
 
     @test.attr(type=['negative', 'gate'])
@@ -198,7 +199,7 @@
                                      user['id'],
                                      role['id'])
         non_existent_tenant = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.remove_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.remove_user_role,
                           non_existent_tenant, user['id'], role['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -207,7 +208,7 @@
         # a user's roles
         (user, tenant, role) = self._get_role_params()
         self.client.assign_user_role(tenant['id'], user['id'], role['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_user_roles, tenant['id'],
                           user['id'])
 
@@ -218,7 +219,7 @@
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
         try:
-            self.assertRaises(exceptions.Unauthorized,
+            self.assertRaises(lib_exc.Unauthorized,
                               self.client.list_user_roles, tenant['id'],
                               user['id'])
         finally:
diff --git a/tempest/api/identity/admin/test_services.py b/tempest/api/identity/admin/test_services.py
index 03d6e35..30e0058 100644
--- a/tempest/api/identity/admin/test_services.py
+++ b/tempest/api/identity/admin/test_services.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from six import moves
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -28,7 +28,7 @@
         # Deleting the service created in this method
         self.client.delete_service(service_id)
         # Checking whether service is deleted successfully
-        self.assertRaises(exceptions.NotFound, self.client.get_service,
+        self.assertRaises(lib_exc.NotFound, self.client.get_service,
                           service_id)
 
     @test.attr(type='smoke')
diff --git a/tempest/api/identity/admin/test_tenant_negative.py b/tempest/api/identity/admin/test_tenant_negative.py
index 75f0152..a4bf263 100644
--- a/tempest/api/identity/admin/test_tenant_negative.py
+++ b/tempest/api/identity/admin/test_tenant_negative.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.identity import base
@@ -27,7 +28,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_list_tenants_by_unauthorized_user(self):
         # Non-administrator user should not be able to list tenants
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_tenants)
 
     @test.attr(type=['negative', 'gate'])
@@ -35,7 +36,7 @@
         # Request to list tenants without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.list_tenants)
+        self.assertRaises(lib_exc.Unauthorized, self.client.list_tenants)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
@@ -44,7 +45,7 @@
         tenant_name = data_utils.rand_name(name='tenant-')
         tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_tenant, tenant['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -55,14 +56,14 @@
         self.data.tenants.append(tenant)
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.delete_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.delete_tenant,
                           tenant['id'])
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_tenant(self):
         # Attempt to delete a non existent tenant should fail
-        self.assertRaises(exceptions.NotFound, self.client.delete_tenant,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_tenant,
                           str(uuid.uuid4().hex))
 
     @test.attr(type=['negative', 'gate'])
@@ -76,14 +77,14 @@
 
         self.addCleanup(self.client.delete_tenant, tenant1_id)
         self.addCleanup(self.data.tenants.remove, tenant)
-        self.assertRaises(exceptions.Conflict, self.client.create_tenant,
+        self.assertRaises(lib_exc.Conflict, self.client.create_tenant,
                           tenant_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_tenant_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to create a tenant
         tenant_name = data_utils.rand_name(name='tenant-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_tenant, tenant_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -92,7 +93,7 @@
         tenant_name = data_utils.rand_name(name='tenant-')
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.create_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.create_tenant,
                           tenant_name)
         self.client.auth_provider.clear_auth()
 
@@ -112,7 +113,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_update_non_existent_tenant(self):
         # Attempt to update a non existent tenant should fail
-        self.assertRaises(exceptions.NotFound, self.client.update_tenant,
+        self.assertRaises(lib_exc.NotFound, self.client.update_tenant,
                           str(uuid.uuid4().hex))
 
     @test.attr(type=['negative', 'gate'])
@@ -121,7 +122,7 @@
         tenant_name = data_utils.rand_name(name='tenant-')
         tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_tenant, tenant['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -132,6 +133,6 @@
         self.data.tenants.append(tenant)
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.update_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.update_tenant,
                           tenant['id'])
         self.client.auth_provider.clear_auth()
diff --git a/tempest/api/identity/admin/test_users_negative.py b/tempest/api/identity/admin/test_users_negative.py
index c039da6..33a2f35 100644
--- a/tempest/api/identity/admin/test_users_negative.py
+++ b/tempest/api/identity/admin/test_users_negative.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.identity import base
@@ -35,7 +36,7 @@
     def test_create_user_by_unauthorized_user(self):
         # Non-administrator should not be authorized to create a user
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_user, self.alt_user,
                           self.alt_password, self.data.tenant['id'],
                           self.alt_email)
@@ -60,14 +61,14 @@
     def test_create_user_with_duplicate_name(self):
         # Duplicate user should not be created
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Conflict, self.client.create_user,
+        self.assertRaises(lib_exc.Conflict, self.client.create_user,
                           self.data.test_user, self.data.test_password,
                           self.data.tenant['id'], self.data.test_email)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_user_for_non_existent_tenant(self):
         # Attempt to create a user in a non-existent tenant should fail
-        self.assertRaises(exceptions.NotFound, self.client.create_user,
+        self.assertRaises(lib_exc.NotFound, self.client.create_user,
                           self.alt_user, self.alt_password, '49ffgg99999',
                           self.alt_email)
 
@@ -79,7 +80,7 @@
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.create_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.create_user,
                           self.alt_user, self.alt_password,
                           self.data.tenant['id'], self.alt_email)
 
@@ -101,7 +102,7 @@
         # Attempt to update a user non-existent user should fail
         user_name = data_utils.rand_name('user-')
         non_existent_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.update_user,
+        self.assertRaises(lib_exc.NotFound, self.client.update_user,
                           non_existent_id, name=user_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -112,7 +113,7 @@
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.update_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.update_user,
                           self.alt_user)
 
         # Unset the token to allow further tests to generate a new token
@@ -122,21 +123,21 @@
     def test_update_user_by_unauthorized_user(self):
         # Non-administrator should not be authorized to update user
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_user, self.alt_user)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_users_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to delete a user
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_user,
                           self.data.user['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_user(self):
         # Attempt to delete a non-existent user should fail
-        self.assertRaises(exceptions.NotFound, self.client.delete_user,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_user,
                           'junk12345123')
 
     @test.attr(type=['negative', 'gate'])
@@ -147,7 +148,7 @@
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.delete_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.delete_user,
                           self.alt_user)
 
         # Unset the token to allow further tests to generate a new token
@@ -158,7 +159,7 @@
         # Disabled user's token should not get authenticated
         self.data.setup_test_user()
         self.disable_user(self.data.test_user)
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           self.data.test_tenant)
@@ -168,7 +169,7 @@
         # User's token for a disabled tenant should not be authenticated
         self.data.setup_test_user()
         self.disable_tenant(self.data.test_tenant)
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           self.data.test_tenant)
@@ -177,7 +178,7 @@
     def test_authentication_with_invalid_tenant(self):
         # User's token for an invalid tenant should not be authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           'junktenant1234')
@@ -186,7 +187,7 @@
     def test_authentication_with_invalid_username(self):
         # Non-existent user's token should not get authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           'junkuser123', self.data.test_password,
                           self.data.test_tenant)
 
@@ -194,7 +195,7 @@
     def test_authentication_with_invalid_password(self):
         # User's token with invalid password should not be authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user, 'junkpass1234',
                           self.data.test_tenant)
 
@@ -202,7 +203,7 @@
     def test_get_users_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to get user list
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.get_users)
 
     @test.attr(type=['negative', 'gate'])
@@ -210,7 +211,7 @@
         # Request to get list of users without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.get_users)
+        self.assertRaises(lib_exc.Unauthorized, self.client.get_users)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
@@ -225,5 +226,5 @@
         invalid_id.append('!@#()$%^&*?<>{}[]')
         # List the users with invalid tenant id
         for invalid in invalid_id:
-            self.assertRaises(exceptions.NotFound,
+            self.assertRaises(lib_exc.NotFound,
                               self.client.list_users_for_tenant, invalid)
diff --git a/tempest/api/identity/admin/v3/test_projects_negative.py b/tempest/api/identity/admin/v3/test_projects_negative.py
index f5e832b..23a16d1 100644
--- a/tempest/api/identity/admin/v3/test_projects_negative.py
+++ b/tempest/api/identity/admin/v3/test_projects_negative.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -25,7 +27,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_list_projects_by_unauthorized_user(self):
         # Non-admin user should not be able to list projects
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_projects)
 
     @test.attr(type=['negative', 'gate'])
@@ -36,14 +38,14 @@
         self.data.projects.append(project)
 
         self.assertRaises(
-            exceptions.Conflict, self.client.create_project, project_name)
+            lib_exc.Conflict, self.client.create_project, project_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_project_by_unauthorized_user(self):
         # Non-admin user should not be authorized to create a project
         project_name = data_utils.rand_name('project-')
         self.assertRaises(
-            exceptions.Unauthorized, self.non_admin_client.create_project,
+            lib_exc.Unauthorized, self.non_admin_client.create_project,
             project_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -66,11 +68,11 @@
         project = self.client.create_project(project_name)
         self.data.projects.append(project)
         self.assertRaises(
-            exceptions.Unauthorized, self.non_admin_client.delete_project,
+            lib_exc.Unauthorized, self.non_admin_client.delete_project,
             project['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_project(self):
         # Attempt to delete a non existent project should fail
-        self.assertRaises(exceptions.NotFound, self.client.delete_project,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_project,
                           data_utils.rand_uuid_hex())
diff --git a/tempest/api/identity/admin/v3/test_regions.py b/tempest/api/identity/admin/v3/test_regions.py
index c71cbf3..2ca3538 100644
--- a/tempest/api/identity/admin/v3/test_regions.py
+++ b/tempest/api/identity/admin/v3/test_regions.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -40,7 +41,7 @@
 
     def _delete_region(self, region_id):
         self.client.delete_region(region_id)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_region, region_id)
 
     @test.attr(type='gate')
diff --git a/tempest/api/identity/admin/v3/test_services.py b/tempest/api/identity/admin/v3/test_services.py
index 9e45b50..c060094 100644
--- a/tempest/api/identity/admin/v3/test_services.py
+++ b/tempest/api/identity/admin/v3/test_services.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -26,7 +27,7 @@
         # Used for deleting the services created in this class
         self.service_client.delete_service(service_id)
         # Checking whether service is deleted successfully
-        self.assertRaises(exceptions.NotFound, self.service_client.get_service,
+        self.assertRaises(lib_exc.NotFound, self.service_client.get_service,
                           service_id)
 
     @test.attr(type='smoke')
diff --git a/tempest/api/identity/admin/v3/test_tokens.py b/tempest/api/identity/admin/v3/test_tokens.py
index f0acfdf..de142e0 100644
--- a/tempest/api/identity/admin/v3/test_tokens.py
+++ b/tempest/api/identity/admin/v3/test_tokens.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,7 +45,7 @@
         self.assertEqual(token_details['user']['name'], u_name)
         # Perform Delete Token
         self.client.delete_token(subject_token)
-        self.assertRaises(exceptions.NotFound, self.client.get_token,
+        self.assertRaises(lib_exc.NotFound, self.client.get_token,
                           subject_token)
 
     @test.attr(type='gate')
diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
index 76124e0..be527d0 100644
--- a/tempest/api/identity/admin/v3/test_trusts.py
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -13,6 +13,8 @@
 import datetime
 import re
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest import clients
 from tempest.common import cred_provider
@@ -166,19 +168,19 @@
             self.trust_id, self.delegated_role_id)
 
         # And that we don't find not_delegated_role
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.trustor_client.get_trust_role,
                           self.trust_id,
                           self.not_delegated_role_id)
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.trustor_client.check_trust_role,
                           self.trust_id,
                           self.not_delegated_role_id)
 
     def delete_trust(self):
         self.trustor_client.delete_trust(self.trust_id)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.trustor_client.get_trust,
                           self.trust_id)
         self.trust_id = None
diff --git a/tempest/api/identity/base.py b/tempest/api/identity/base.py
index b2d96fb..e428071 100644
--- a/tempest/api/identity/base.py
+++ b/tempest/api/identity/base.py
@@ -13,12 +13,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common import cred_provider
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 import tempest.test
 
@@ -226,7 +226,7 @@
                     func(item['id'], **kwargs)
                 else:
                     func(item['id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
             except Exception:
                 LOG.exception("Unexpected exception occurred in %s deletion."
diff --git a/tempest/api/image/base.py b/tempest/api/image/base.py
index 12f3fdd..4d33d37 100644
--- a/tempest/api/image/base.py
+++ b/tempest/api/image/base.py
@@ -13,12 +13,12 @@
 #    under the License.
 
 import cStringIO as StringIO
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common import credentials
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 import tempest.test
 
@@ -48,7 +48,7 @@
         for image_id in cls.created_images:
             try:
                 cls.client.delete_image(image_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
         for image_id in cls.created_images:
diff --git a/tempest/api/image/v1/test_image_members_negative.py b/tempest/api/image/v1/test_image_members_negative.py
index aac63b4..1622791 100644
--- a/tempest/api/image/v1/test_image_members_negative.py
+++ b/tempest/api/image/v1/test_image_members_negative.py
@@ -12,10 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.image import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -25,14 +25,14 @@
     def test_add_member_with_non_existing_image(self):
         # Add member with non existing image.
         non_exist_image = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.add_member,
+        self.assertRaises(lib_exc.NotFound, self.client.add_member,
                           self.alt_tenant_id, non_exist_image)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_member_with_non_existing_image(self):
         # Delete member with non existing image.
         non_exist_image = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.delete_member,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_member,
                           self.alt_tenant_id, non_exist_image)
 
     @test.attr(type=['negative', 'gate'])
@@ -40,13 +40,13 @@
         # Delete member with non existing tenant.
         image_id = self._create_image()
         non_exist_tenant = data_utils.rand_uuid_hex()
-        self.assertRaises(exceptions.NotFound, self.client.delete_member,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_member,
                           non_exist_tenant, image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_image_without_membership(self):
         # Image is hidden from another tenants.
         image_id = self._create_image()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_img_cli.get_image,
                           image_id)
diff --git a/tempest/api/image/v1/test_images_negative.py b/tempest/api/image/v1/test_images_negative.py
index 66556e0..b144a83 100644
--- a/tempest/api/image/v1/test_images_negative.py
+++ b/tempest/api/image/v1/test_images_negative.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
 from tempest import exceptions
 from tempest import test
@@ -35,7 +37,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_with_invalid_image_id(self):
         # An image should not be deleted with invalid image id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '!@$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
@@ -43,28 +45,28 @@
         # Return an error while trying to delete a non-existent image
 
         non_existent_image_id = '11a22b9-12a9-5555-cc11-00ab112223fa'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           non_existent_image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_blank_id(self):
         # Return an error while trying to delete an image with blank Id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_non_hex_string_id(self):
         # Return an error while trying to delete an image with non hex id
         image_id = '11a22b9-120q-5555-cc11-00ab112223gj'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_negative_image_id(self):
         # Return an error while trying to delete an image with negative id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, -1)
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_id_is_over_35_character_limit(self):
         # Return an error while trying to delete image with id over limit
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '11a22b9-12a9-5555-cc11-00ab112223fa-3fac')
diff --git a/tempest/api/image/v2/test_images_member_negative.py b/tempest/api/image/v2/test_images_member_negative.py
index 1f8e3d0..9965286 100644
--- a/tempest/api/image/v2/test_images_member_negative.py
+++ b/tempest/api/image/v2/test_images_member_negative.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
 from tempest import exceptions
 from tempest import test
@@ -35,7 +37,7 @@
                                                self.alt_tenant_id)
         self.assertEqual(member['status'], 'pending')
         self.assertNotIn(image_id, self._list_image_ids_as_alt())
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.os_img_client.update_member_status,
                           image_id, self.alt_tenant_id, 'accepted')
         self.assertNotIn(image_id, self._list_image_ids_as_alt())
diff --git a/tempest/api/image/v2/test_images_negative.py b/tempest/api/image/v2/test_images_negative.py
index fc781b1..d32fc3b 100644
--- a/tempest/api/image/v2/test_images_negative.py
+++ b/tempest/api/image/v2/test_images_negative.py
@@ -16,6 +16,8 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
 from tempest import exceptions
 from tempest import test
@@ -39,14 +41,14 @@
     def test_get_non_existent_image(self):
         # get the non-existent image
         non_existent_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.get_image,
+        self.assertRaises(lib_exc.NotFound, self.client.get_image,
                           non_existent_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_image_null_id(self):
         # get image with image_id = NULL
         image_id = ""
-        self.assertRaises(exceptions.NotFound, self.client.get_image, image_id)
+        self.assertRaises(lib_exc.NotFound, self.client.get_image, image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_delete_deleted_image(self):
@@ -60,24 +62,24 @@
         self.client.wait_for_resource_deletion(image_id)
 
         # get the deleted image
-        self.assertRaises(exceptions.NotFound, self.client.get_image, image_id)
+        self.assertRaises(lib_exc.NotFound, self.client.get_image, image_id)
 
         # delete the deleted image
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existing_image(self):
         # delete non-existent image
         non_existent_image_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           non_existent_image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_null_id(self):
         # delete image with image_id=NULL
         image_id = ""
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/image/v2/test_images_tags_negative.py b/tempest/api/image/v2/test_images_tags_negative.py
index aa0a214..5b18862 100644
--- a/tempest/api/image/v2/test_images_tags_negative.py
+++ b/tempest/api/image/v2/test_images_tags_negative.py
@@ -14,9 +14,10 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -27,7 +28,7 @@
         # Update tag with non existing image.
         tag = data_utils.rand_name('tag-')
         non_exist_image = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.add_image_tag,
+        self.assertRaises(lib_exc.NotFound, self.client.add_image_tag,
                           non_exist_image, tag)
 
     @test.attr(type=['negative', 'gate'])
@@ -40,5 +41,5 @@
         image_id = body['id']
         tag = data_utils.rand_name('non-exist-tag-')
         self.addCleanup(self.client.delete_image, image_id)
-        self.assertRaises(exceptions.NotFound, self.client.delete_image_tag,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image_tag,
                           image_id, tag)
diff --git a/tempest/api/messaging/test_claims.py b/tempest/api/messaging/test_claims.py
index 1b004dd..1aab8d2 100644
--- a/tempest/api/messaging/test_claims.py
+++ b/tempest/api/messaging/test_claims.py
@@ -16,6 +16,8 @@
 import logging
 import urlparse
 
+from tempest_lib import decorators
+
 from tempest.api.messaging import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -65,7 +67,7 @@
         # Delete Claimed message
         self.client.delete_messages(claimed_message_uri)
 
-    @test.skip_because(bug="1331517")
+    @decorators.skip_because(bug="1331517")
     @test.attr(type='smoke')
     def test_query_claim(self):
         # Post a Claim
@@ -79,7 +81,7 @@
         claimed_message_uri = body[0]['href']
         self.delete_messages(claimed_message_uri)
 
-    @test.skip_because(bug="1328111")
+    @decorators.skip_because(bug="1328111")
     @test.attr(type='smoke')
     def test_update_claim(self):
         # Post a Claim
diff --git a/tempest/api/messaging/test_queues.py b/tempest/api/messaging/test_queues.py
index accbd17..04ba8a3 100644
--- a/tempest/api/messaging/test_queues.py
+++ b/tempest/api/messaging/test_queues.py
@@ -16,11 +16,11 @@
 import logging
 
 from six import moves
+from tempest_lib import exceptions as lib_exc
 from testtools import matchers
 
 from tempest.api.messaging import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -42,7 +42,7 @@
         self.assertEqual('', body)
 
         self.delete_queue(queue_name)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_queue,
                           queue_name)
 
diff --git a/tempest/api/network/admin/test_external_networks_negative.py b/tempest/api/network/admin/test_external_networks_negative.py
index 7dbb347..8eb6888 100644
--- a/tempest/api/network/admin/test_external_networks_negative.py
+++ b/tempest/api/network/admin/test_external_networks_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -47,7 +48,7 @@
         fixed_ips = [{'ip_address': floating_ip_address}]
 
         # create a port which will internally create an instance-ip
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           client.create_port,
                           network_id=CONF.network.public_network_id,
                           fixed_ips=fixed_ips)
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index 10cda53..520bec7 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common.utils import data_utils
@@ -177,7 +178,7 @@
         try:
             delete_callable(*args, **kwargs)
         # if resource is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @classmethod
@@ -399,7 +400,7 @@
             try:
                 cls.client.remove_router_interface_with_subnet_id(
                     router['id'], i['fixed_ips'][0]['subnet_id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         cls.client.delete_router(router['id'])
 
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index 1257699..f7a6fb7 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -16,6 +16,8 @@
 import netaddr
 import random
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -348,7 +350,7 @@
                          fixed_ips=[
                              {'subnet_id': subnet['id'],
                               'ip_address': ip}])
-        self.assertRaisesRegexp(exceptions.Conflict,
+        self.assertRaisesRegexp(lib_exc.Conflict,
                                 "object with that identifier already exists",
                                 self.create_port,
                                 self.network,
diff --git a/tempest/api/network/test_floating_ips_negative.py b/tempest/api/network/test_floating_ips_negative.py
index 82f0519..7e91ba2 100644
--- a/tempest/api/network/test_floating_ips_negative.py
+++ b/tempest/api/network/test_floating_ips_negative.py
@@ -14,6 +14,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -49,7 +51,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_floatingip_with_port_ext_net_unreachable(self):
-        self.assertRaises(exceptions.NotFound, self.client.create_floatingip,
+        self.assertRaises(lib_exc.NotFound, self.client.create_floatingip,
                           floating_network_id=self.ext_net_id,
                           port_id=self.port['id'],
                           fixed_ip_address=self.port['fixed_ips'][0]
@@ -72,7 +74,7 @@
         floating_ip = body['floatingip']
         self.addCleanup(self.client.delete_floatingip, floating_ip['id'])
         # Associate floating IP to the other port
-        self.assertRaises(exceptions.NotFound, self.client.update_floatingip,
+        self.assertRaises(lib_exc.NotFound, self.client.update_floatingip,
                           floating_ip['id'], port_id=self.port['id'],
                           fixed_ip_address=self.port['fixed_ips'][0]
                           ['ip_address'])
diff --git a/tempest/api/network/test_fwaas_extensions.py b/tempest/api/network/test_fwaas_extensions.py
index 8104567..b0318c9 100644
--- a/tempest/api/network/test_fwaas_extensions.py
+++ b/tempest/api/network/test_fwaas_extensions.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -63,7 +65,7 @@
         try:
             self.client.delete_firewall_policy(policy_id)
         # if policy is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     def _try_delete_rule(self, rule_id):
@@ -71,7 +73,7 @@
         try:
             self.client.delete_firewall_rule(rule_id)
         # if rule is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     def _try_delete_firewall(self, fw_id):
@@ -79,7 +81,7 @@
         try:
             self.client.delete_firewall(fw_id)
         # if firewall is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
         self.client.wait_for_resource_deletion('firewall', fw_id)
diff --git a/tempest/api/network/test_load_balancer.py b/tempest/api/network/test_load_balancer.py
index b606115..df76757 100644
--- a/tempest/api/network/test_load_balancer.py
+++ b/tempest/api/network/test_load_balancer.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -422,6 +424,6 @@
         self.assertEqual(2, member['weight'])
 
 
-@test.skip_because(bug="1402007")
+@decorators.skip_because(bug="1402007")
 class LoadBalancerIpV6TestJSON(LoadBalancerTestJSON):
     _ip_version = 6
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index 65aeb24..a5f9667 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -15,12 +15,12 @@
 import itertools
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.network import base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -280,7 +280,7 @@
         try:
             self.client.delete_network(net_id)
         # if network is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @test.attr(type='smoke')
@@ -300,7 +300,7 @@
         body = self.client.delete_network(net_id)
 
         # Verify that the subnet got automatically deleted.
-        self.assertRaises(exceptions.NotFound, self.client.show_subnet,
+        self.assertRaises(lib_exc.NotFound, self.client.show_subnet,
                           subnet_id)
 
         # Since create_subnet adds the subnet to the delete list, and it is
@@ -614,7 +614,7 @@
         self.assertNotIn(subnet_slaac['id'], subnet_ids,
                          "Subnet wasn't deleted")
         self.assertRaisesRegexp(
-            exceptions.Conflict,
+            lib_exc.Conflict,
             "There are one or more ports still in use on the network",
             self.client.delete_network,
             slaac_network['id'])
diff --git a/tempest/api/network/test_networks_negative.py b/tempest/api/network/test_networks_negative.py
index bc3ab68..b694728 100644
--- a/tempest/api/network/test_networks_negative.py
+++ b/tempest/api/network/test_networks_negative.py
@@ -14,9 +14,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -26,29 +27,29 @@
     @test.attr(type=['negative', 'smoke'])
     def test_show_non_existent_network(self):
         non_exist_id = data_utils.rand_name('network')
-        self.assertRaises(exceptions.NotFound, self.client.show_network,
+        self.assertRaises(lib_exc.NotFound, self.client.show_network,
                           non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_non_existent_subnet(self):
         non_exist_id = data_utils.rand_name('subnet')
-        self.assertRaises(exceptions.NotFound, self.client.show_subnet,
+        self.assertRaises(lib_exc.NotFound, self.client.show_subnet,
                           non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_non_existent_port(self):
         non_exist_id = data_utils.rand_name('port')
-        self.assertRaises(exceptions.NotFound, self.client.show_port,
+        self.assertRaises(lib_exc.NotFound, self.client.show_port,
                           non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
     def test_update_non_existent_network(self):
         non_exist_id = data_utils.rand_name('network')
-        self.assertRaises(exceptions.NotFound, self.client.update_network,
+        self.assertRaises(lib_exc.NotFound, self.client.update_network,
                           non_exist_id, name="new_name")
 
     @test.attr(type=['negative', 'smoke'])
     def test_delete_non_existent_network(self):
         non_exist_id = data_utils.rand_name('network')
-        self.assertRaises(exceptions.NotFound, self.client.delete_network,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_network,
                           non_exist_id)
diff --git a/tempest/api/network/test_routers_negative.py b/tempest/api/network/test_routers_negative.py
index d571e92..32dcf74 100644
--- a/tempest/api/network/test_routers_negative.py
+++ b/tempest/api/network/test_routers_negative.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.network import base_routers as base
 from tempest.common.utils import data_utils
@@ -42,7 +43,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_router_add_gateway_invalid_network_returns_404(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_router,
                           self.router['id'],
                           external_gateway_info={
@@ -79,26 +80,26 @@
     def test_router_remove_interface_in_use_returns_409(self):
         self.client.add_router_interface_with_subnet_id(
             self.router['id'], self.subnet['id'])
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.delete_router,
                           self.router['id'])
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_non_existent_router_returns_404(self):
         router = data_utils.rand_name('non_exist_router')
-        self.assertRaises(exceptions.NotFound, self.client.show_router,
+        self.assertRaises(lib_exc.NotFound, self.client.show_router,
                           router)
 
     @test.attr(type=['negative', 'smoke'])
     def test_update_non_existent_router_returns_404(self):
         router = data_utils.rand_name('non_exist_router')
-        self.assertRaises(exceptions.NotFound, self.client.update_router,
+        self.assertRaises(lib_exc.NotFound, self.client.update_router,
                           router, name="new_name")
 
     @test.attr(type=['negative', 'smoke'])
     def test_delete_non_existent_router_returns_404(self):
         router = data_utils.rand_name('non_exist_router')
-        self.assertRaises(exceptions.NotFound, self.client.delete_router,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_router,
                           router)
 
 
diff --git a/tempest/api/network/test_security_groups_negative.py b/tempest/api/network/test_security_groups_negative.py
index fb51e30..0398c66 100644
--- a/tempest/api/network/test_security_groups_negative.py
+++ b/tempest/api/network/test_security_groups_negative.py
@@ -15,6 +15,8 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base_security_groups as base
 from tempest import config
 from tempest import exceptions
@@ -37,20 +39,20 @@
     @test.attr(type=['negative', 'gate'])
     def test_show_non_existent_security_group(self):
         non_exist_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.show_security_group,
+        self.assertRaises(lib_exc.NotFound, self.client.show_security_group,
                           non_exist_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_show_non_existent_security_group_rule(self):
         non_exist_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.show_security_group_rule,
                           non_exist_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_security_group(self):
         non_exist_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group,
                           non_exist_id
                           )
@@ -88,7 +90,7 @@
         group_ids = ['bad_group_id', non_exist_id]
         for remote_group_id in group_ids:
             self.assertRaises(
-                exceptions.NotFound, self.client.create_security_group_rule,
+                lib_exc.NotFound, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='tcp', direction='ingress', ethertype=self.ethertype,
                 remote_group_id=remote_group_id)
@@ -152,7 +154,7 @@
     def test_create_additional_default_security_group_fails(self):
         # Create security group named 'default', it should be failed.
         name = 'default'
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.create_security_group,
                           name=name)
 
@@ -175,7 +177,7 @@
 
         # Try creating the same security group rule, it should fail
         self.assertRaises(
-            exceptions.Conflict, self.client.create_security_group_rule,
+            lib_exc.Conflict, self.client.create_security_group_rule,
             security_group_id=body['security_group']['id'],
             protocol='tcp', direction='ingress', ethertype=self.ethertype,
             port_range_min=min_port, port_range_max=max_port)
@@ -184,7 +186,7 @@
     def test_create_security_group_rule_with_non_existent_security_group(self):
         # Create security group rules with not existing security group.
         non_existent_sg = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.create_security_group_rule,
                           security_group_id=non_existent_sg,
                           direction='ingress', ethertype=self.ethertype)
diff --git a/tempest/api/network/test_service_type_management.py b/tempest/api/network/test_service_type_management.py
index 447c3f3..0492fe3 100644
--- a/tempest/api/network/test_service_type_management.py
+++ b/tempest/api/network/test_service_type_management.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.network import base
 from tempest import test
 
@@ -24,7 +26,7 @@
             msg = "Neutron Service Type Management not enabled."
             raise cls.skipException(msg)
 
-    @test.skip_because(bug="1400370")
+    @decorators.skip_because(bug="1400370")
     @test.attr(type='smoke')
     def test_service_provider_list(self):
         body = self.client.list_service_providers()
diff --git a/tempest/api/network/test_vpnaas_extensions.py b/tempest/api/network/test_vpnaas_extensions.py
index 56e1a05..9ff406c 100644
--- a/tempest/api/network/test_vpnaas_extensions.py
+++ b/tempest/api/network/test_vpnaas_extensions.py
@@ -13,10 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -74,7 +75,7 @@
         try:
             self.client.delete_ipsecpolicy(ipsec_policy_id)
 
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     def _assertExpected(self, expected, actual):
@@ -304,7 +305,7 @@
         self._assertExpected(new_ipsec, updated_ipsec_policy)
         # Verification of ipsec policy delete
         self.client.delete_ipsecpolicy(ipsecpolicy['id'])
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_ipsecpolicy, ipsecpolicy['id'])
 
     @test.attr(type='smoke')
diff --git a/tempest/api/object_storage/base.py b/tempest/api/object_storage/base.py
index 36c9f5a..79a1960 100644
--- a/tempest/api/object_storage/base.py
+++ b/tempest/api/object_storage/base.py
@@ -13,13 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.identity import base
 from tempest import clients
 from tempest.common import credentials
 from tempest.common import custom_matchers
 from tempest import config
-from tempest import exceptions
 import tempest.test
 
 CONF = config.CONF
@@ -93,10 +93,10 @@
                 for obj in objlist:
                     try:
                         object_client.delete_object(cont, obj['name'])
-                    except exceptions.NotFound:
+                    except lib_exc.NotFound:
                         pass
                 container_client.delete_container(cont)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     def assertHeaders(self, resp, target, method):
@@ -126,7 +126,7 @@
             return next(r['id'] for r in roles if r['name'] == role_name)
         except StopIteration:
             msg = "Role name '%s' is not found" % role_name
-            raise exceptions.NotFound(msg)
+            raise lib_exc.NotFound(msg)
 
     def _assign_role(self, role_id):
         self.client.assign_user_role(self.tenant['id'],
diff --git a/tempest/api/object_storage/test_account_quotas_negative.py b/tempest/api/object_storage/test_account_quotas_negative.py
index a6ea6ee..0e136bf 100644
--- a/tempest/api/object_storage/test_account_quotas_negative.py
+++ b/tempest/api/object_storage/test_account_quotas_negative.py
@@ -14,11 +14,13 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -83,21 +85,21 @@
         """
 
         # Not able to remove quota
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.create_account_metadata,
                           {"Quota-Bytes": ""})
 
         # Not able to modify quota
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.create_account_metadata,
                           {"Quota-Bytes": "100"})
 
     @test.attr(type=["negative", "smoke"])
-    @test.skip_because(bug="1310597")
+    @decorators.skip_because(bug="1310597")
     @test.requires_ext(extension='account_quotas', service='object')
     def test_upload_large_object(self):
         object_name = data_utils.rand_name(name="TestObject")
         data = data_utils.arbitrary_string(30)
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.object_client.create_object,
                           self.container_name, object_name, data)
diff --git a/tempest/api/object_storage/test_account_services_negative.py b/tempest/api/object_storage/test_account_services_negative.py
index ef04387..9acf668 100644
--- a/tempest/api/object_storage/test_account_services_negative.py
+++ b/tempest/api/object_storage/test_account_services_negative.py
@@ -14,9 +14,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,6 +45,6 @@
 
         params = {'format': 'json'}
         # list containers with non-authorized user token
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.list_account_containers,
                           params=params)
diff --git a/tempest/api/object_storage/test_container_acl_negative.py b/tempest/api/object_storage/test_container_acl_negative.py
index 138d25a..7fe472c 100644
--- a/tempest/api/object_storage/test_container_acl_negative.py
+++ b/tempest/api/object_storage/test_container_acl_negative.py
@@ -14,10 +14,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -47,7 +48,7 @@
             request_part='headers',
             auth_data=None
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name, object_name, 'data', headers={})
 
@@ -63,7 +64,7 @@
             request_part='headers',
             auth_data=None
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name, object_name)
 
@@ -77,7 +78,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name, object_name, 'data', headers={})
 
@@ -94,7 +95,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get_object,
                           self.container_name, object_name)
 
@@ -111,7 +112,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name, object_name)
 
@@ -134,7 +135,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get_object,
                           self.container_name, object_name)
 
@@ -153,7 +154,7 @@
             auth_data=self.test_auth_data
         )
         object_name = data_utils.rand_name(name='Object')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name,
                           object_name, 'data', headers={})
@@ -175,7 +176,7 @@
             auth_data=self.test_auth_data
         )
         object_name = data_utils.rand_name(name='Object')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name,
                           object_name, 'data', headers={})
@@ -201,7 +202,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name,
                           object_name)
diff --git a/tempest/api/object_storage/test_container_quotas.py b/tempest/api/object_storage/test_container_quotas.py
index 46944ed..12ec6d2 100644
--- a/tempest/api/object_storage/test_container_quotas.py
+++ b/tempest/api/object_storage/test_container_quotas.py
@@ -13,10 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -75,7 +76,7 @@
 
         nbefore = self._get_bytes_used()
 
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.object_client.create_object,
                           self.container_name, object_name, data)
 
@@ -93,7 +94,7 @@
         nbefore = self._get_object_count()
         self.assertEqual(nbefore, QUOTA_COUNT)
 
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.object_client.create_object,
                           self.container_name, "OverQuotaObject", "")
 
diff --git a/tempest/api/object_storage/test_container_staticweb.py b/tempest/api/object_storage/test_container_staticweb.py
index a8e5f9a..8a61911 100644
--- a/tempest/api/object_storage/test_container_staticweb.py
+++ b/tempest/api/object_storage/test_container_staticweb.py
@@ -14,10 +14,11 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -161,5 +162,5 @@
 
         # Request non-existing object
         self.assertRaises(
-            exceptions.NotFound, self.object_client.get_object,
+            lib_exc.NotFound, self.object_client.get_object,
             self.container_name, "notexisting")
diff --git a/tempest/api/object_storage/test_container_sync.py b/tempest/api/object_storage/test_container_sync.py
index 7f8cb8b..09b0ce0 100644
--- a/tempest/api/object_storage/test_container_sync.py
+++ b/tempest/api/object_storage/test_container_sync.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 import time
 import urlparse
@@ -112,7 +113,7 @@
                 self.assertEqual(object_content, obj_name[::-1])
 
     @test.attr(type='slow')
-    @test.skip_because(bug='1317133')
+    @decorators.skip_because(bug='1317133')
     @testtools.skipIf(
         not CONF.object_storage_feature_enabled.container_sync,
         'Old-style container sync function is disabled')
diff --git a/tempest/api/object_storage/test_object_expiry.py b/tempest/api/object_storage/test_object_expiry.py
index 5fa209d..be5d50e 100644
--- a/tempest/api/object_storage/test_object_expiry.py
+++ b/tempest/api/object_storage/test_object_expiry.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import time
 
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -66,7 +66,7 @@
         time.sleep(sleepy_time + 3)
 
         # object should not be there anymore
-        self.assertRaises(exceptions.NotFound, self.object_client.get_object,
+        self.assertRaises(lib_exc.NotFound, self.object_client.get_object,
                           self.container_name, self.object_name)
 
     @test.attr(type='gate')
diff --git a/tempest/api/object_storage/test_object_formpost_negative.py b/tempest/api/object_storage/test_object_formpost_negative.py
index 32f5917..cdd9d2c 100644
--- a/tempest/api/object_storage/test_object_formpost_negative.py
+++ b/tempest/api/object_storage/test_object_formpost_negative.py
@@ -18,9 +18,10 @@
 import time
 import urlparse
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -117,7 +118,7 @@
 
         url = "%s/%s" % (self.container_name, self.object_name)
         exc = self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.object_client.post,
             url, body, headers=headers)
         self.assertIn('FormPost: Form Expired', str(exc))
@@ -133,7 +134,7 @@
 
         url = "%s/%s" % (self.container_name, self.object_name)
         exc = self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.object_client.post,
             url, body, headers=headers)
         self.assertIn('FormPost: Invalid Signature', str(exc))
diff --git a/tempest/api/object_storage/test_object_slo.py b/tempest/api/object_storage/test_object_slo.py
index 6622349..7b85201 100644
--- a/tempest/api/object_storage/test_object_slo.py
+++ b/tempest/api/object_storage/test_object_slo.py
@@ -15,10 +15,11 @@
 import hashlib
 import json
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 # Each segment, except for the final one, must be at least 1 megabyte
@@ -39,7 +40,7 @@
                 self.object_client.delete_object(
                     self.container_name,
                     obj)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         self.container_client.delete_container(self.container_name)
         super(ObjectSloTest, self).tearDown()
diff --git a/tempest/api/object_storage/test_object_temp_url_negative.py b/tempest/api/object_storage/test_object_temp_url_negative.py
index b752348..ca34293 100644
--- a/tempest/api/object_storage/test_object_temp_url_negative.py
+++ b/tempest/api/object_storage/test_object_temp_url_negative.py
@@ -19,9 +19,10 @@
 import time
 import urlparse
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -104,5 +105,5 @@
         # temp URL is valid for 1 seconds, let's wait 2
         time.sleep(2)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get, url)
diff --git a/tempest/api/orchestration/base.py b/tempest/api/orchestration/base.py
index 97777db..2a99630 100644
--- a/tempest/api/orchestration/base.py
+++ b/tempest/api/orchestration/base.py
@@ -12,12 +12,12 @@
 
 import os.path
 
+from tempest_lib import exceptions as lib_exc
 import yaml
 
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 import tempest.test
 
@@ -84,14 +84,14 @@
         for stack_identifier in cls.stacks:
             try:
                 cls.client.delete_stack(stack_identifier)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
         for stack_identifier in cls.stacks:
             try:
                 cls.client.wait_for_stack_status(
                     stack_identifier, 'DELETE_COMPLETE')
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     @classmethod
@@ -125,7 +125,7 @@
         for image_id in cls.images:
             try:
                 cls.images_v2_client.delete_image(image_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     @classmethod
diff --git a/tempest/api/orchestration/stacks/test_soft_conf.py b/tempest/api/orchestration/stacks/test_soft_conf.py
index 8903d4c..220054e 100644
--- a/tempest/api/orchestration/stacks/test_soft_conf.py
+++ b/tempest/api/orchestration/stacks/test_soft_conf.py
@@ -10,10 +10,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.orchestration import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest import test
 
@@ -70,14 +71,14 @@
         self.client.delete_software_deploy(deploy_id)
         # Testing that it is really gone
         self.assertRaises(
-            exceptions.NotFound, self.client.get_software_deploy,
+            lib_exc.NotFound, self.client.get_software_deploy,
             self.deployment_id)
 
     def _config_delete(self, config_id):
         self.client.delete_software_config(config_id)
         # Testing that it is really gone
         self.assertRaises(
-            exceptions.NotFound, self.client.get_software_config, config_id)
+            lib_exc.NotFound, self.client.get_software_config, config_id)
 
     @test.attr(type='smoke')
     def test_get_software_config(self):
diff --git a/tempest/api/orchestration/stacks/test_volumes.py b/tempest/api/orchestration/stacks/test_volumes.py
index 6fddb21..322bdf1 100644
--- a/tempest/api/orchestration/stacks/test_volumes.py
+++ b/tempest/api/orchestration/stacks/test_volumes.py
@@ -12,10 +12,11 @@
 
 import logging
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.orchestration import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 
@@ -73,7 +74,7 @@
         # Delete the stack and ensure the volume is gone
         self.client.delete_stack(stack_identifier)
         self.client.wait_for_stack_status(stack_identifier, 'DELETE_COMPLETE')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volumes_client.get_volume,
                           volume_id)
 
diff --git a/tempest/api/telemetry/base.py b/tempest/api/telemetry/base.py
index 8885187..dc7a8f5 100644
--- a/tempest/api/telemetry/base.py
+++ b/tempest/api/telemetry/base.py
@@ -12,6 +12,8 @@
 
 import time
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest import exceptions
@@ -80,7 +82,7 @@
         for resource_id in list_of_ids:
             try:
                 method(resource_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     @classmethod
diff --git a/tempest/api/telemetry/test_telemetry_alarming_api.py b/tempest/api/telemetry/test_telemetry_alarming_api.py
index 97eb4eb..2457438 100644
--- a/tempest/api/telemetry/test_telemetry_alarming_api.py
+++ b/tempest/api/telemetry/test_telemetry_alarming_api.py
@@ -10,9 +10,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.telemetry import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -70,7 +71,7 @@
         self.assertDictContainsSubset(new_rule, body['threshold_rule'])
         # Delete alarm and verify if deleted
         self.telemetry_client.delete_alarm(alarm_id)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.telemetry_client.get_alarm, alarm_id)
 
     @test.attr(type="gate")
@@ -101,5 +102,5 @@
         self.assertDictContainsSubset(rule, body['combination_rule'])
         # Verify alarm delete
         self.telemetry_client.delete_alarm(alarm_id)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.telemetry_client.get_alarm, alarm_id)
diff --git a/tempest/api/telemetry/test_telemetry_notification_api.py b/tempest/api/telemetry/test_telemetry_notification_api.py
index e64cd4a..7e5d6ee 100644
--- a/tempest/api/telemetry/test_telemetry_notification_api.py
+++ b/tempest/api/telemetry/test_telemetry_notification_api.py
@@ -10,6 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.api.telemetry import base
@@ -46,7 +47,7 @@
     @test.services("image")
     @testtools.skipIf(not CONF.image_feature_enabled.api_v1,
                       "Glance api v1 is disabled")
-    @test.skip_because(bug='1351627')
+    @decorators.skip_because(bug='1351627')
     def test_check_glance_v1_notifications(self):
         body = self.create_image(self.image_client)
         self.image_client.update_image(body['id'], data='data')
@@ -62,7 +63,7 @@
     @test.services("image")
     @testtools.skipIf(not CONF.image_feature_enabled.api_v2,
                       "Glance api v2 is disabled")
-    @test.skip_because(bug='1351627')
+    @decorators.skip_because(bug='1351627')
     def test_check_glance_v2_notifications(self):
         body = self.create_image(self.image_client_v2)
 
diff --git a/tempest/api/volume/admin/test_volume_quotas_negative.py b/tempest/api/volume/admin/test_volume_quotas_negative.py
index 5cf6af0..d5eb05a 100644
--- a/tempest/api/volume/admin/test_volume_quotas_negative.py
+++ b/tempest/api/volume/admin/test_volume_quotas_negative.py
@@ -13,8 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -42,13 +43,13 @@
 
     @test.attr(type='negative')
     def test_quota_volumes(self):
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.volumes_client.create_volume,
                           size=1)
 
     @test.attr(type='negative')
     def test_quota_volume_snapshots(self):
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.snapshots_client.create_snapshot,
                           self.volume['id'])
 
@@ -65,7 +66,7 @@
         self.quotas_client.update_quota_set(
             self.demo_tenant_id,
             **new_quota_set)
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.volumes_client.create_volume,
                           size=1)
 
@@ -73,7 +74,7 @@
         self.quotas_client.update_quota_set(
             self.demo_tenant_id,
             **self.shared_quota_set)
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.snapshots_client.create_snapshot,
                           self.volume['id'])
 
diff --git a/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py b/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
index fff0199..2e2cfd2 100644
--- a/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
@@ -15,6 +15,8 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -83,7 +85,7 @@
             # type id.
         extra_specs = {"spec2": "val1"}
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.create_volume_type_extra_specs,
             str(uuid.uuid4()), extra_specs)
 
@@ -109,7 +111,7 @@
             # type id.
         extra_specs = {"spec1": "val1"}
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.delete_volume_type_extra_specs,
             str(uuid.uuid4()), extra_specs.keys()[0])
 
@@ -117,7 +119,7 @@
     def test_list_nonexistent_volume_type_id(self):
         # Should not list volume type extra spec for nonexistent type id.
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.list_volume_types_extra_specs,
             str(uuid.uuid4()))
 
@@ -126,7 +128,7 @@
         # Should not get volume type extra spec for nonexistent type id.
         extra_specs = {"spec1": "val1"}
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.get_volume_type_extra_specs,
             str(uuid.uuid4()), extra_specs.keys()[0])
 
@@ -135,7 +137,7 @@
         # Should not get volume type extra spec for nonexistent extra spec
             # id.
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.get_volume_type_extra_specs,
             self.volume_type['id'], str(uuid.uuid4()))
 
diff --git a/tempest/api/volume/admin/test_volume_types_negative.py b/tempest/api/volume/admin/test_volume_types_negative.py
index 4144270..18d54fa 100644
--- a/tempest/api/volume/admin/test_volume_types_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_negative.py
@@ -15,6 +15,8 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
 from tempest import exceptions
 from tempest import test
@@ -29,7 +31,7 @@
         self.name_field = self.special_fields['name_field']
         params = {self.name_field: str(uuid.uuid4()),
                   'volume_type': str(uuid.uuid4())}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volumes_client.create_volume, size=1,
                           **params)
 
@@ -42,14 +44,14 @@
     @test.attr(type='gate')
     def test_get_nonexistent_type_id(self):
         # Should not be able to get volume type with nonexistent type id.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volume_types_client.get_volume_type,
                           str(uuid.uuid4()))
 
     @test.attr(type='gate')
     def test_delete_nonexistent_type_id(self):
         # Should not be able to delete volume type with nonexistent type id.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volume_types_client.delete_volume_type,
                           str(uuid.uuid4()))
 
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index 127a216..a1858de 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
@@ -208,13 +210,13 @@
         for qos_id in cls.qos_specs:
             try:
                 cls.volume_qos_client.delete_qos(qos_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The qos_specs may have already been deleted which is OK.
                 pass
 
         for qos_id in cls.qos_specs:
             try:
                 cls.volume_qos_client.wait_for_resource_deletion(qos_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The qos_specs may have already been deleted which is OK.
                 pass
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index dc8d8e2..57fcaee 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -15,6 +15,8 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -37,13 +39,13 @@
     @test.attr(type=['negative', 'gate'])
     def test_volume_get_nonexistent_volume_id(self):
         # Should not be able to get a non-existent volume
-        self.assertRaises(exceptions.NotFound, self.client.get_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_delete_nonexistent_volume_id(self):
         # Should not be able to delete a non-existent Volume
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
@@ -85,7 +87,7 @@
         # Should not be able to create volume with non-existent volume type
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.create_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.create_volume,
                           size='1', volume_type=str(uuid.uuid4()),
                           display_name=v_name, metadata=metadata)
 
@@ -94,7 +96,7 @@
         # Should not be able to create volume with non-existent snapshot
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.create_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.create_volume,
                           size='1', snapshot_id=str(uuid.uuid4()),
                           display_name=v_name, metadata=metadata)
 
@@ -103,7 +105,7 @@
         # Should not be able to create volume with non-existent source volume
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.create_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.create_volume,
                           size='1', source_volid=str(uuid.uuid4()),
                           display_name=v_name, metadata=metadata)
 
@@ -111,7 +113,7 @@
     def test_update_volume_with_nonexistent_volume_id(self):
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.update_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.update_volume,
                           volume_id=str(uuid.uuid4()), display_name=v_name,
                           metadata=metadata)
 
@@ -119,7 +121,7 @@
     def test_update_volume_with_invalid_volume_id(self):
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.update_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.update_volume,
                           volume_id='#$%%&^&^', display_name=v_name,
                           metadata=metadata)
 
@@ -127,31 +129,31 @@
     def test_update_volume_with_empty_volume_id(self):
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.update_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.update_volume,
                           volume_id='', display_name=v_name,
                           metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_invalid_volume_id(self):
         # Should not be able to get volume with invalid id
-        self.assertRaises(exceptions.NotFound, self.client.get_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume,
                           '#$%%&^&^')
 
     @test.attr(type=['negative', 'gate'])
     def test_get_volume_without_passing_volume_id(self):
         # Should not be able to get volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.get_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_invalid_volume_id(self):
         # Should not be able to delete volume when invalid ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume,
                           '!@#$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_volume_without_passing_volume_id(self):
         # Should not be able to delete volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume, '')
 
     @test.attr(type=['negative', 'gate'])
     @test.services('compute')
@@ -162,7 +164,7 @@
                                                          self.flavor_ref)
         self.addCleanup(self.servers_client.delete_server, server['id'])
         self.servers_client.wait_for_server_status(server['id'], 'ACTIVE')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.attach_volume,
                           str(uuid.uuid4()),
                           server['id'],
@@ -170,7 +172,7 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_detach_volumes_with_invalid_volume_id(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.detach_volume,
                           'xxx')
 
@@ -199,25 +201,25 @@
     def test_volume_extend_with_nonexistent_volume_id(self):
         # Extend volume size when volume is nonexistent.
         extend_size = int(self.volume['size']) + 1
-        self.assertRaises(exceptions.NotFound, self.client.extend_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.extend_volume,
                           str(uuid.uuid4()), extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_extend_without_passing_volume_id(self):
         # Extend volume size when passing volume id is None.
         extend_size = int(self.volume['size']) + 1
-        self.assertRaises(exceptions.NotFound, self.client.extend_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.extend_volume,
                           None, extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_reserve_volume_with_nonexistent_volume_id(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.reserve_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
     def test_unreserve_volume_with_nonexistent_volume_id(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.unreserve_volume,
                           str(uuid.uuid4()))
 
diff --git a/tempest/api/volume/test_volumes_snapshots.py b/tempest/api/volume/test_volumes_snapshots.py
index 179eb09..d667dfd 100644
--- a/tempest/api/volume/test_volumes_snapshots.py
+++ b/tempest/api/volume/test_volumes_snapshots.py
@@ -70,7 +70,7 @@
         self.addCleanup(self.servers_client.delete_server, server['id'])
         self.servers_client.wait_for_server_status(server['id'], 'ACTIVE')
         mountpoint = '/dev/%s' % CONF.compute.volume_device_name
-        _, body = self.servers_client.attach_volume(
+        self.servers_client.attach_volume(
             server['id'], self.volume_origin['id'], mountpoint)
         self.volumes_client.wait_for_volume_status(self.volume_origin['id'],
                                                    'in-use')
diff --git a/tempest/api/volume/test_volumes_snapshots_negative.py b/tempest/api/volume/test_volumes_snapshots_negative.py
index 2d7b6de..8b68ea9 100644
--- a/tempest/api/volume/test_volumes_snapshots_negative.py
+++ b/tempest/api/volume/test_volumes_snapshots_negative.py
@@ -12,10 +12,11 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -34,7 +35,7 @@
     def test_create_snapshot_with_nonexistent_volume_id(self):
         # Create a snapshot with nonexistent volume id
         s_name = data_utils.rand_name('snap')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.snapshots_client.create_snapshot,
                           str(uuid.uuid4()), display_name=s_name)
 
@@ -42,7 +43,7 @@
     def test_create_snapshot_without_passing_volume_id(self):
         # Create a snapshot without passing volume id
         s_name = data_utils.rand_name('snap')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.snapshots_client.create_snapshot,
                           None, display_name=s_name)
 
diff --git a/tempest/cli/simple_read_only/compute/test_nova.py b/tempest/cli/simple_read_only/compute/test_nova.py
index 5efeb75..aee92fa 100644
--- a/tempest/cli/simple_read_only/compute/test_nova.py
+++ b/tempest/cli/simple_read_only/compute/test_nova.py
@@ -13,13 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 from tempest_lib import exceptions
 import testtools
 
 from tempest import cli
 from tempest import config
 from tempest.openstack.common import log as logging
-import tempest.test
 
 CONF = config.CONF
 
@@ -82,7 +82,7 @@
     def test_admin_dns_domains(self):
         self.nova('dns-domains')
 
-    @tempest.test.skip_because(bug="1157349")
+    @decorators.skip_because(bug="1157349")
     def test_admin_dns_list(self):
         self.nova('dns-list')
 
@@ -120,7 +120,7 @@
     def test_admin_image_list(self):
         self.nova('image-list')
 
-    @tempest.test.skip_because(bug="1157349")
+    @decorators.skip_because(bug="1157349")
     def test_admin_interface_list(self):
         self.nova('interface-list')
 
@@ -145,7 +145,7 @@
     def test_admin_secgroup_list(self):
         self.nova('secgroup-list')
 
-    @tempest.test.skip_because(bug="1157349")
+    @decorators.skip_because(bug="1157349")
     def test_admin_secgroup_list_rules(self):
         self.nova('secgroup-list-rules')
 
diff --git a/tempest/cmd/javelin.py b/tempest/cmd/javelin.py
index 889b2dd..4af2108 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -110,6 +110,7 @@
 import unittest
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 import yaml
 
 import tempest.auth
@@ -297,7 +298,7 @@
             USERS[user]['tenant_id'],
             USERS[user]['id'],
             role['id'])
-    except exceptions.Conflict:
+    except lib_exc.Conflict:
         # don't care if it's already assigned
         pass
 
@@ -313,14 +314,14 @@
     for u in users:
         try:
             tenant = admin.identity.get_tenant_by_name(u['tenant'])
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.error("Tenant: %s - not found" % u['tenant'])
             continue
         try:
             admin.identity.get_user_by_username(tenant['id'], u['name'])
             LOG.warn("User '%s' already exists in this environment"
                      % u['name'])
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             admin.identity.create_user(
                 u['name'], u['pass'], tenant['id'],
                 "%s@%s" % (u['name'], tenant['id']),
diff --git a/tempest/common/isolated_creds.py b/tempest/common/isolated_creds.py
index 7d89cc5..3572a1d 100644
--- a/tempest/common/isolated_creds.py
+++ b/tempest/common/isolated_creds.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common import cred_provider
@@ -80,7 +81,7 @@
             role = next(r for r in roles if r['name'] == role_name)
         except StopIteration:
             msg = 'No "%s" role found' % role_name
-            raise exceptions.NotFound(msg)
+            raise lib_exc.NotFound(msg)
         self.identity_admin_client.assign_user_role(tenant['id'], user['id'],
                                                     role['id'])
 
@@ -281,7 +282,7 @@
         net_client = self.network_admin_client
         try:
             net_client.delete_router(router_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn('router with name: %s not found for delete' %
                      router_name)
 
@@ -289,7 +290,7 @@
         net_client = self.network_admin_client
         try:
             net_client.delete_subnet(subnet_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn('subnet with name: %s not found for delete' %
                      subnet_name)
 
@@ -297,7 +298,7 @@
         net_client = self.network_admin_client
         try:
             net_client.delete_network(network_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn('network with name: %s not found for delete' %
                      network_name)
 
@@ -309,7 +310,7 @@
         for secgroup in secgroups_to_delete:
             try:
                 net_client.delete_security_group(secgroup['id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 LOG.warn('Security group %s, id %s not found for clean-up' %
                          (secgroup['name'], secgroup['id']))
 
@@ -325,7 +326,7 @@
                 try:
                     net_client.remove_router_interface_with_subnet_id(
                         router['id'], subnet['id'])
-                except exceptions.NotFound:
+                except lib_exc.NotFound:
                     LOG.warn('router with name: %s not found for delete' %
                              router['name'])
                 self._clear_isolated_router(router['id'], router['name'])
@@ -343,12 +344,12 @@
         for creds in self.isolated_creds.itervalues():
             try:
                 self._delete_user(creds.user_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 LOG.warn("user with name: %s not found for delete" %
                          creds.username)
             try:
                 self._delete_tenant(creds.tenant_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 LOG.warn("tenant with name: %s not found for delete" %
                          creds.tenant_name)
 
diff --git a/tempest/common/service_client.py b/tempest/common/service_client.py
index 69e25e2..9aeb243 100644
--- a/tempest/common/service_client.py
+++ b/tempest/common/service_client.py
@@ -59,22 +59,14 @@
                 method, url,
                 extra_headers=extra_headers,
                 headers=headers, body=body)
-        except lib_exceptions.Unauthorized as ex:
-            raise exceptions.Unauthorized(ex)
-        except lib_exceptions.NotFound as ex:
-            raise exceptions.NotFound(ex)
         except lib_exceptions.BadRequest as ex:
             raise exceptions.BadRequest(ex)
-        except lib_exceptions.Conflict as ex:
-            raise exceptions.Conflict(ex)
-        except lib_exceptions.OverLimit as ex:
-            raise exceptions.OverLimit(ex)
         # TODO(oomichi): This is just a workaround for failing gate tests
         # when separating Forbidden from Unauthorized in tempest-lib.
         # We will need to remove this translation and replace negative tests
         # with lib_exceptions.Forbidden in the future.
         except lib_exceptions.Forbidden as ex:
-            raise exceptions.Unauthorized(ex)
+            raise lib_exceptions.Unauthorized(ex)
 
 
 class ResponseBody(dict):
diff --git a/tempest/config.py b/tempest/config.py
index c60434a..4588b20 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -455,7 +455,13 @@
     cfg.ListOpt('dns_servers',
                 default=["8.8.8.8", "8.8.4.4"],
                 help="List of dns servers which should be used"
-                     " for subnet creation")
+                     " for subnet creation"),
+    cfg.StrOpt('port_vnic_type',
+               choices=[None, 'normal', 'direct', 'macvtap'],
+               help="vnic_type to use when Launching instances"
+                    " with pre-configured ports."
+                    " Supported ports are:"
+                    " ['normal','direct','macvtap']"),
 ]
 
 network_feature_group = cfg.OptGroup(name='network-feature-enabled',
diff --git a/tempest/exceptions.py b/tempest/exceptions.py
index 6f57955..09f7016 100644
--- a/tempest/exceptions.py
+++ b/tempest/exceptions.py
@@ -155,26 +155,10 @@
     message = "The success code is different than the expected one"
 
 
-class NotFound(RestClientException):
-    message = "Object not found"
-
-
-class Unauthorized(RestClientException):
-    message = 'Unauthorized'
-
-
 class BadRequest(RestClientException):
     message = "Bad request"
 
 
-class OverLimit(RestClientException):
-    message = "Quota exceeded"
-
-
-class Conflict(RestClientException):
-    message = "An object with that identifier already exists"
-
-
 class ResponseWithNonEmptyBody(RFCViolation):
     message = ("RFC Violation! Response with %(status)d HTTP Status Code "
                "MUST NOT have a body")
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 6489477..7da7b12 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -19,6 +19,7 @@
 
 import netaddr
 import six
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common import cred_provider
@@ -110,7 +111,7 @@
             # Tempest clients return dicts, so there is no common delete
             # method available. Using a callable instead
             delete_thing(*args, **kwargs)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             # If the resource is already missing, mission accomplished.
             pass
 
@@ -417,7 +418,7 @@
     def nova_volume_attach(self):
         # TODO(andreaf) Device should be here CONF.compute.volume_device_name
         volume = self.servers_client.attach_volume(
-            self.server['id'], self.volume['id'], '/dev/vdb')[1]
+            self.server['id'], self.volume['id'], '/dev/vdb')
         self.assertEqual(self.volume['id'], volume['id'])
         self.volumes_client.wait_for_volume_status(volume['id'], 'in-use')
         # Refresh the volume after the attachment
@@ -628,7 +629,7 @@
             try:
                 result = client.create_subnet(**subnet)
                 break
-            except exceptions.Conflict as e:
+            except lib_exc.Conflict as e:
                 is_overlapping_cidr = 'overlaps with another subnet' in str(e)
                 if not is_overlapping_cidr:
                     raise
@@ -639,14 +640,15 @@
         self.addCleanup(self.delete_wrapper, subnet.delete)
         return subnet
 
-    def _create_port(self, network, client=None, namestart='port-quotatest'):
+    def _create_port(self, network_id, client=None, namestart='port-quotatest',
+                     **kwargs):
         if not client:
             client = self.network_client
         name = data_utils.rand_name(namestart)
         result = client.create_port(
             name=name,
-            network_id=network.id,
-            tenant_id=network.tenant_id)
+            network_id=network_id,
+            **kwargs)
         self.assertIsNotNone(result, 'Unable to allocate port')
         port = net_resources.DeletablePort(client=client,
                                            **result['port'])
@@ -915,7 +917,7 @@
                 try:
                     sg_rule = self._create_security_group_rule(
                         client=client, secgroup=secgroup, **ruleset)
-                except exceptions.Conflict as ex:
+                except lib_exc.Conflict as ex:
                     # if rule already exist - skip rule and continue
                     msg = 'Security group rule already exists'
                     if msg not in ex._error_string:
@@ -1047,6 +1049,66 @@
             subnet.add_to_router(router.id)
         return network, subnet, router
 
+    def create_server(self, name=None, image=None, flavor=None,
+                      wait_on_boot=True, wait_on_delete=True,
+                      create_kwargs=None):
+        vnic_type = CONF.network.port_vnic_type
+
+        # If vnic_type is configured create port for
+        # every network
+        if vnic_type:
+            ports = []
+            networks = []
+            create_port_body = {'binding:vnic_type': vnic_type,
+                                'namestart': 'port-smoke'}
+            if create_kwargs:
+                net_client = create_kwargs.get("network_client",
+                                               self.network_client)
+
+                # Convert security group names to security group ids
+                # to pass to create_port
+                if create_kwargs.get('security_groups'):
+                    security_groups = net_client.list_security_groups().get(
+                        'security_groups')
+                    sec_dict = dict([(s['name'], s['id'])
+                                    for s in security_groups])
+
+                    sec_groups_names = [s['name'] for s in create_kwargs[
+                        'security_groups']]
+                    security_groups_ids = [sec_dict[s]
+                                           for s in sec_groups_names]
+
+                    if security_groups_ids:
+                        create_port_body[
+                            'security_groups'] = security_groups_ids
+                networks = create_kwargs.get('networks')
+            else:
+                net_client = self.network_client
+            # If there are no networks passed to us we look up
+            # for the tenant's private networks and create a port
+            # if there is only one private network. The same behaviour
+            # as we would expect when passing the call to the clients
+            # with no networks
+            if not networks:
+                networks = net_client.list_networks(filters={
+                    'router:external': False})
+                self.assertEqual(1, len(networks),
+                                 "There is more than one"
+                                 " network for the tenant")
+            for net in networks:
+                net_id = net['uuid']
+                port = self._create_port(network_id=net_id,
+                                         client=net_client,
+                                         **create_port_body)
+                ports.append({'port': port.id})
+            if ports:
+                create_kwargs['networks'] = ports
+
+        return super(NetworkScenarioTest, self).create_server(
+            name=name, image=image, flavor=flavor,
+            wait_on_boot=wait_on_boot, wait_on_delete=wait_on_delete,
+            create_kwargs=create_kwargs)
+
 
 # power/provision states as of icehouse
 class BaremetalPowerStates(object):
@@ -1124,7 +1186,7 @@
             node = None
             try:
                 node = self.get_node(instance_id=instance_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
             return node is not None
 
diff --git a/tempest/scenario/orchestration/test_server_cfn_init.py b/tempest/scenario/orchestration/test_server_cfn_init.py
index 18b759e..6052e0b 100644
--- a/tempest/scenario/orchestration/test_server_cfn_init.py
+++ b/tempest/scenario/orchestration/test_server_cfn_init.py
@@ -12,6 +12,8 @@
 
 import json
 
+from tempest_lib import decorators
+
 from tempest import config
 from tempest import exceptions
 from tempest.openstack.common import log as logging
@@ -123,7 +125,7 @@
                                    log_console_of_servers=[server])
 
     @test.attr(type='slow')
-    @test.skip_because(bug='1374175')
+    @decorators.skip_because(bug='1374175')
     @test.services('orchestration', 'compute')
     def test_server_cfn_init(self):
         self.assign_keypair()
diff --git a/tempest/scenario/test_dashboard_basic_ops.py b/tempest/scenario/test_dashboard_basic_ops.py
index 35f6689..1313050 100644
--- a/tempest/scenario/test_dashboard_basic_ops.py
+++ b/tempest/scenario/test_dashboard_basic_ops.py
@@ -65,7 +65,7 @@
 
     def check_login_page(self):
         response = urllib2.urlopen(CONF.dashboard.dashboard_url)
-        self.assertIn("Log In", response.read())
+        self.assertIn("id_username", response.read())
 
     def user_login(self, username, password):
         self.opener = urllib2.build_opener(urllib2.HTTPCookieProcessor())
diff --git a/tempest/scenario/test_large_ops.py b/tempest/scenario/test_large_ops.py
index 99a2023..ac766ea 100644
--- a/tempest/scenario/test_large_ops.py
+++ b/tempest/scenario/test_large_ops.py
@@ -12,7 +12,7 @@
 #    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 import exceptions
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common.utils import data_utils
 from tempest import config
@@ -54,7 +54,7 @@
             function, args, kwargs = cls._cleanup_resources.pop(-1)
             try:
                 function(*args, **kwargs)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         super(TestLargeOpsScenario, cls).resource_cleanup()
 
diff --git a/tempest/scenario/test_minimum_basic.py b/tempest/scenario/test_minimum_basic.py
index 5ea48e0..4624038 100644
--- a/tempest/scenario/test_minimum_basic.py
+++ b/tempest/scenario/test_minimum_basic.py
@@ -78,7 +78,7 @@
     def nova_volume_attach(self):
         volume_device_path = '/dev/' + CONF.compute.volume_device_name
         volume = self.servers_client.attach_volume(
-            self.server['id'], self.volume['id'], volume_device_path)[1]
+            self.server['id'], self.volume['id'], volume_device_path)
         self.assertEqual(self.volume['id'], volume['id'])
         self.volumes_client.wait_for_volume_status(volume['id'], 'in-use')
         # Refresh the volume after the attachment
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index 194a0bd..598c6d1 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.common.utils import data_utils
@@ -92,7 +93,7 @@
         self.servers_client.wait_for_server_status(self.server['id'], 'ACTIVE')
         self._check_network_connectivity()
 
-    @test.skip_because(bug="1323658")
+    @decorators.skip_because(bug="1323658")
     @test.services('compute', 'network')
     def test_server_connectivity_stop_start(self):
         self._setup_network_and_servers()
@@ -140,7 +141,7 @@
         self.servers_client.resume_server(self.server['id'])
         self._wait_server_status_and_check_network_connectivity()
 
-    @test.skip_because(bug="1323658")
+    @decorators.skip_because(bug="1323658")
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
                           'Resize is not available.')
     @test.services('compute', 'network')
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index de211fb..ae326c4 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -16,6 +16,7 @@
 import collections
 import re
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.common.utils import data_utils
@@ -380,6 +381,9 @@
 
     @testtools.skipUnless(CONF.compute_feature_enabled.interface_attach,
                           'NIC hotplug not available')
+    @testtools.skipIf(CONF.network.port_vnic_type in ['direct', 'macvtap'],
+                      'NIC hotplug not supported for '
+                      'vnic_type direct or macvtap')
     @test.attr(type='smoke')
     @test.services('compute', 'network')
     def test_hotplug_nic(self):
@@ -438,7 +442,7 @@
                                  act_serv=servers,
                                  trgt_serv=dns_servers))
 
-    @test.skip_because(bug="1412325")
+    @decorators.skip_because(bug="1412325")
     @testtools.skipUnless(CONF.scenario.dhcp_client,
                           "DHCP client is not available.")
     @test.attr(type='smoke')
diff --git a/tempest/scenario/test_security_groups_basic_ops.py b/tempest/scenario/test_security_groups_basic_ops.py
index 83739fd..55ab18f 100644
--- a/tempest/scenario/test_security_groups_basic_ops.py
+++ b/tempest/scenario/test_security_groups_basic_ops.py
@@ -238,7 +238,8 @@
             ],
             'key_name': tenant.keypair['name'],
             'security_groups': security_groups_names,
-            'tenant_id': tenant.creds.tenant_id
+            'tenant_id': tenant.creds.tenant_id,
+            'network_client': tenant.manager.network_client
         }
         server = self.create_server(name=name, create_kwargs=create_kwargs)
         self.assertEqual(
diff --git a/tempest/scenario/test_stamp_pattern.py b/tempest/scenario/test_stamp_pattern.py
index cfc1d37..e97f089 100644
--- a/tempest/scenario/test_stamp_pattern.py
+++ b/tempest/scenario/test_stamp_pattern.py
@@ -15,6 +15,8 @@
 
 import time
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.common.utils import data_utils
@@ -84,7 +86,7 @@
             try:
                 while self.snapshots_client.get_snapshot(snapshot['id']):
                     time.sleep(1)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         self.addCleanup(cleaner)
         self._wait_for_volume_status(volume, 'available')
@@ -101,7 +103,7 @@
 
     def _attach_volume(self, server, volume):
         # TODO(andreaf) we should use device from config instead if vdb
-        _, attached_volume = self.servers_client.attach_volume(
+        attached_volume = self.servers_client.attach_volume(
             server['id'], volume['id'], device='/dev/vdb')
         self.assertEqual(volume['id'], attached_volume['id'])
         self._wait_for_volume_status(attached_volume, 'in-use')
@@ -137,7 +139,7 @@
         got_timestamp = ssh_client.exec_command('sudo cat /mnt/timestamp')
         self.assertEqual(self.timestamp, got_timestamp)
 
-    @tempest.test.skip_because(bug="1205344")
+    @decorators.skip_because(bug="1205344")
     @testtools.skipUnless(CONF.compute_feature_enabled.snapshot,
                           'Snapshotting is not available.')
     @tempest.test.services('compute', 'network', 'volume', 'image')
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index 910fd79..c8f438e 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest.openstack.common import log
@@ -130,7 +132,7 @@
         actual = self._get_content(ssh_client)
         self.assertEqual(expected, actual)
 
-    @test.skip_because(bug='1373513')
+    @decorators.skip_because(bug='1373513')
     @test.services('compute', 'volume', 'image')
     def test_volume_boot_pattern(self):
         keypair = self.create_keypair()
diff --git a/tempest/services/botoclients.py b/tempest/services/botoclients.py
index f581e89..50d0779 100644
--- a/tempest/services/botoclients.py
+++ b/tempest/services/botoclients.py
@@ -15,6 +15,7 @@
 
 import ConfigParser
 import contextlib
+from tempest_lib import exceptions as lib_exc
 import types
 import urlparse
 
@@ -65,7 +66,7 @@
             ec2_cred = keystone.ec2.create(keystone.auth_user_id,
                                            keystone.auth_tenant_id)
         if not all((ec2_cred, ec2_cred.access, ec2_cred.secret)):
-            raise exceptions.NotFound("Unable to get access and secret keys")
+            raise lib_exc.NotFound("Unable to get access and secret keys")
         return ec2_cred
 
     def _config_boto_timeout(self, timeout, retries):
diff --git a/tempest/services/compute/json/aggregates_client.py b/tempest/services/compute/json/aggregates_client.py
index 94ea713..10955fd 100644
--- a/tempest/services/compute/json/aggregates_client.py
+++ b/tempest/services/compute/json/aggregates_client.py
@@ -15,10 +15,11 @@
 
 import json
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute import aggregates as schema
 from tempest.api_schema.response.compute.v2 import aggregates as v2_schema
 from tempest.common import service_client
-from tempest import exceptions
 
 
 class AggregatesClientJSON(service_client.ServiceClient):
@@ -68,7 +69,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_aggregate(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/compute/json/floating_ips_client.py b/tempest/services/compute/json/floating_ips_client.py
index 9c586e3..d06386e 100644
--- a/tempest/services/compute/json/floating_ips_client.py
+++ b/tempest/services/compute/json/floating_ips_client.py
@@ -16,9 +16,10 @@
 import json
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import floating_ips as schema
 from tempest.common import service_client
-from tempest import exceptions
 
 
 class FloatingIPsClientJSON(service_client.ServiceClient):
@@ -40,7 +41,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         if resp.status == 404:
-            raise exceptions.NotFound(body)
+            raise lib_exc.NotFound(body)
         self.validate_response(schema.floating_ip, resp, body)
         return resp, body['floating_ip']
 
@@ -92,7 +93,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_floating_ip_details(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/compute/json/images_client.py b/tempest/services/compute/json/images_client.py
index a5755da..0ceb6d1 100644
--- a/tempest/services/compute/json/images_client.py
+++ b/tempest/services/compute/json/images_client.py
@@ -16,10 +16,11 @@
 import json
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import images as schema
 from tempest.common import service_client
 from tempest.common import waiters
-from tempest import exceptions
 
 
 class ImagesClientJSON(service_client.ServiceClient):
@@ -131,7 +132,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_image(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/compute/json/security_groups_client.py b/tempest/services/compute/json/security_groups_client.py
index 410ad60..5aefa7b 100644
--- a/tempest/services/compute/json/security_groups_client.py
+++ b/tempest/services/compute/json/security_groups_client.py
@@ -16,9 +16,10 @@
 import json
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import security_groups as schema
 from tempest.common import service_client
-from tempest import exceptions
 
 
 class SecurityGroupsClientJSON(service_client.ServiceClient):
@@ -128,12 +129,12 @@
         for sg in body['security_groups']:
             if sg['id'] == security_group_id:
                 return service_client.ResponseBodyList(resp, sg['rules'])
-        raise exceptions.NotFound('No such Security Group')
+        raise lib_exc.NotFound('No such Security Group')
 
     def is_resource_deleted(self, id):
         try:
             self.get_security_group(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/compute/json/servers_client.py b/tempest/services/compute/json/servers_client.py
index cbe1ca8..fe3d02b 100644
--- a/tempest/services/compute/json/servers_client.py
+++ b/tempest/services/compute/json/servers_client.py
@@ -18,6 +18,8 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute import servers as common_schema
 from tempest.api_schema.response.compute.v2 import servers as schema
 from tempest.common import service_client
@@ -183,7 +185,7 @@
         while True:
             try:
                 resp, body = self.get_server(server_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 return
 
             server_status = body['status']
@@ -364,14 +366,14 @@
                                post_body)
         body = json.loads(body)
         self.validate_response(schema.attach_volume, resp, body)
-        return resp, body['volumeAttachment']
+        return service_client.ResponseBody(resp, body['volumeAttachment'])
 
     def detach_volume(self, server_id, volume_id):
         """Detaches a volume from a server instance."""
         resp, body = self.delete('servers/%s/os-volume_attachments/%s' %
                                  (server_id, volume_id))
         self.validate_response(schema.detach_volume, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_volume_attachment(self, server_id, attach_id):
         """Return details about the given volume attachment."""
@@ -379,7 +381,7 @@
             str(server_id), attach_id))
         body = json.loads(body)
         self.validate_response(schema.get_volume_attachment, resp, body)
-        return resp, body['volumeAttachment']
+        return service_client.ResponseBody(resp, body['volumeAttachment'])
 
     def list_volume_attachments(self, server_id):
         """Returns the list of volume attachments for a given instance."""
@@ -387,7 +389,7 @@
             str(server_id)))
         body = json.loads(body)
         self.validate_response(schema.list_volume_attachments, resp, body)
-        return resp, body['volumeAttachments']
+        return service_client.ResponseBodyList(resp, body['volumeAttachments'])
 
     def add_security_group(self, server_id, name):
         """Adds a security group to the server."""
diff --git a/tempest/services/compute/json/volumes_extensions_client.py b/tempest/services/compute/json/volumes_extensions_client.py
index 61d0b23..a9cada8 100644
--- a/tempest/services/compute/json/volumes_extensions_client.py
+++ b/tempest/services/compute/json/volumes_extensions_client.py
@@ -17,6 +17,8 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import volumes as schema
 from tempest.common import service_client
 from tempest import exceptions
@@ -33,7 +35,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_volumes, resp, body)
-        return resp, body['volumes']
+        return service_client.ResponseBodyList(resp, body['volumes'])
 
     def list_volumes_with_detail(self, params=None):
         """List all the details of volumes."""
@@ -44,7 +46,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_volumes, resp, body)
-        return resp, body['volumes']
+        return service_client.ResponseBodyList(resp, body['volumes'])
 
     def get_volume(self, volume_id):
         """Returns the details of a single volume."""
@@ -52,7 +54,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.create_get_volume, resp, body)
-        return resp, body['volume']
+        return service_client.ResponseBody(resp, body['volume'])
 
     def create_volume(self, size, **kwargs):
         """
@@ -71,23 +73,23 @@
         resp, body = self.post('os-volumes', post_body)
         body = json.loads(body)
         self.validate_response(schema.create_get_volume, resp, body)
-        return resp, body['volume']
+        return service_client.ResponseBody(resp, body['volume'])
 
     def delete_volume(self, volume_id):
         """Deletes the Specified Volume."""
         resp, body = self.delete("os-volumes/%s" % str(volume_id))
         self.validate_response(schema.delete_volume, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def wait_for_volume_status(self, volume_id, status):
         """Waits for a Volume to reach a given status."""
-        resp, body = self.get_volume(volume_id)
+        body = self.get_volume(volume_id)
         volume_status = body['status']
         start = int(time.time())
 
         while volume_status != status:
             time.sleep(self.build_interval)
-            resp, body = self.get_volume(volume_id)
+            body = self.get_volume(volume_id)
             volume_status = body['status']
             if volume_status == 'error':
                 raise exceptions.VolumeBuildErrorException(volume_id=volume_id)
@@ -102,7 +104,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_volume(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/data_processing/v1_1/client.py b/tempest/services/data_processing/v1_1/client.py
index 55b6be6..8879373 100644
--- a/tempest/services/data_processing/v1_1/client.py
+++ b/tempest/services/data_processing/v1_1/client.py
@@ -33,7 +33,17 @@
         """Make a request using specified request_func and check response
         status code.
 
-        It returns pair: resp and response body.
+        It returns a ResponseBody.
+        """
+        resp, body = request_func(uri)
+        self.expected_success(resp_status, resp.status)
+        return service_client.ResponseBody(resp, body)
+
+    def _request_and_check_resp_data(self, request_func, uri, resp_status):
+        """Make a request using specified request_func and check response
+        status code.
+
+        It returns pair: resp and response data.
         """
         resp, body = request_func(uri)
         self.expected_success(resp_status, resp.status)
@@ -44,20 +54,35 @@
         """Make a request using specified request_func, check response status
         code and parse response body.
 
-        It returns pair: resp and parsed resource(s) body.
+        It returns a ResponseBody.
         """
         headers = {'Content-Type': 'application/json'}
         resp, body = request_func(uri, headers=headers, *args, **kwargs)
         self.expected_success(resp_status, resp.status)
         body = json.loads(body)
-        return resp, body[resource_name]
+        return service_client.ResponseBody(resp, body[resource_name])
+
+    def _request_check_and_parse_resp_list(self, request_func, uri,
+                                           resp_status, resource_name,
+                                           *args, **kwargs):
+        """Make a request using specified request_func, check response status
+        code and parse response body.
+
+        It returns a ResponseBodyList.
+        """
+        headers = {'Content-Type': 'application/json'}
+        resp, body = request_func(uri, headers=headers, *args, **kwargs)
+        self.expected_success(resp_status, resp.status)
+        body = json.loads(body)
+        return service_client.ResponseBodyList(resp, body[resource_name])
 
     def list_node_group_templates(self):
         """List all node group templates for a user."""
 
         uri = 'node-group-templates'
-        return self._request_check_and_parse_resp(self.get, uri,
-                                                  200, 'node_group_templates')
+        return self._request_check_and_parse_resp_list(self.get, uri,
+                                                       200,
+                                                       'node_group_templates')
 
     def get_node_group_template(self, tmpl_id):
         """Returns the details of a single node group template."""
@@ -98,8 +123,8 @@
         """List all enabled plugins."""
 
         uri = 'plugins'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'plugins')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'plugins')
 
     def get_plugin(self, plugin_name, plugin_version=None):
         """Returns the details of a single plugin."""
@@ -113,8 +138,9 @@
         """List all cluster templates for a user."""
 
         uri = 'cluster-templates'
-        return self._request_check_and_parse_resp(self.get, uri,
-                                                  200, 'cluster_templates')
+        return self._request_check_and_parse_resp_list(self.get, uri,
+                                                       200,
+                                                       'cluster_templates')
 
     def get_cluster_template(self, tmpl_id):
         """Returns the details of a single cluster template."""
@@ -154,8 +180,9 @@
         """List all data sources for a user."""
 
         uri = 'data-sources'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'data_sources')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200,
+                                                       'data_sources')
 
     def get_data_source(self, source_id):
         """Returns the details of a single data source."""
@@ -191,8 +218,8 @@
         """List all job binary internals for a user."""
 
         uri = 'job-binary-internals'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'binaries')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'binaries')
 
     def get_job_binary_internal(self, job_binary_id):
         """Returns the details of a single job binary internal."""
@@ -218,14 +245,14 @@
         """Returns data of a single job binary internal."""
 
         uri = 'job-binary-internals/%s/data' % job_binary_id
-        return self._request_and_check_resp(self.get, uri, 200)
+        return self._request_and_check_resp_data(self.get, uri, 200)
 
     def list_job_binaries(self):
         """List all job binaries for a user."""
 
         uri = 'job-binaries'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'binaries')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'binaries')
 
     def get_job_binary(self, job_binary_id):
         """Returns the details of a single job binary."""
@@ -261,13 +288,14 @@
         """Returns data of a single job binary."""
 
         uri = 'job-binaries/%s/data' % job_binary_id
-        return self._request_and_check_resp(self.get, uri, 200)
+        return self._request_and_check_resp_data(self.get, uri, 200)
 
     def list_jobs(self):
         """List all jobs for a user."""
 
         uri = 'jobs'
-        return self._request_check_and_parse_resp(self.get, uri, 200, 'jobs')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'jobs')
 
     def get_job(self, job_id):
         """Returns the details of a single job."""
diff --git a/tempest/services/identity/json/identity_client.py b/tempest/services/identity/json/identity_client.py
index d4f57e0..6fbb3a9 100644
--- a/tempest/services/identity/json/identity_client.py
+++ b/tempest/services/identity/json/identity_client.py
@@ -11,10 +11,10 @@
 #    under the License.
 
 import json
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import service_client
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
@@ -134,7 +134,7 @@
         for tenant in tenants:
             if tenant['name'] == tenant_name:
                 return tenant
-        raise exceptions.NotFound('No such tenant')
+        raise lib_exc.NotFound('No such tenant')
 
     def update_tenant(self, tenant_id, **kwargs):
         """Updates a tenant."""
@@ -227,7 +227,7 @@
         for user in users:
             if user['name'] == username:
                 return user
-        raise exceptions.NotFound('No such user')
+        raise lib_exc.NotFound('No such user')
 
     def create_service(self, name, type, **kwargs):
         """Create a service."""
diff --git a/tempest/services/identity/json/token_client.py b/tempest/services/identity/json/token_client.py
index 93936bc..1e8b31e 100644
--- a/tempest/services/identity/json/token_client.py
+++ b/tempest/services/identity/json/token_client.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 import json
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import service_client
 from tempest import config
@@ -87,7 +88,7 @@
 
         if resp.status in [401, 403]:
             resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
+            raise lib_exc.Unauthorized(resp_body['error']['message'])
         elif resp.status not in [200, 201]:
             raise exceptions.IdentityError(
                 'Unexpected status code {0}'.format(resp.status))
diff --git a/tempest/services/identity/v3/json/token_client.py b/tempest/services/identity/v3/json/token_client.py
index 14c4a0a..1467d7c 100644
--- a/tempest/services/identity/v3/json/token_client.py
+++ b/tempest/services/identity/v3/json/token_client.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 import json
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import service_client
 from tempest import config
@@ -112,7 +113,7 @@
 
         if resp.status in [401, 403]:
             resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
+            raise lib_exc.Unauthorized(resp_body['error']['message'])
         elif resp.status not in [200, 201, 204]:
             raise exceptions.IdentityError(
                 'Unexpected status code {0}'.format(resp.status))
diff --git a/tempest/services/image/v1/json/image_client.py b/tempest/services/image/v1/json/image_client.py
index a7b8f63..0c05118 100644
--- a/tempest/services/image/v1/json/image_client.py
+++ b/tempest/services/image/v1/json/image_client.py
@@ -20,6 +20,8 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import glance_http
 from tempest.common import service_client
 from tempest.common.utils import misc as misc_utils
@@ -243,7 +245,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_image_meta(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/image/v2/json/image_client.py b/tempest/services/image/v2/json/image_client.py
index 4b1d52d..4cddc59 100644
--- a/tempest/services/image/v2/json/image_client.py
+++ b/tempest/services/image/v2/json/image_client.py
@@ -17,11 +17,11 @@
 import urllib
 
 import jsonschema
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import glance_http
 from tempest.common import service_client
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
@@ -120,7 +120,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_image(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/network/json/network_client.py b/tempest/services/network/json/network_client.py
index e92708c..5106225 100644
--- a/tempest/services/network/json/network_client.py
+++ b/tempest/services/network/json/network_client.py
@@ -14,6 +14,8 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import service_client
 from tempest.common.utils import misc
 from tempest import exceptions
@@ -211,7 +213,7 @@
             getattr(self, method)(id)
         except AttributeError:
             raise Exception("Unknown resource type %s " % resource_type)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/orchestration/json/orchestration_client.py b/tempest/services/orchestration/json/orchestration_client.py
index c813977..1a4c5d9 100644
--- a/tempest/services/orchestration/json/orchestration_client.py
+++ b/tempest/services/orchestration/json/orchestration_client.py
@@ -18,6 +18,8 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import service_client
 from tempest import exceptions
 
@@ -159,7 +161,7 @@
             try:
                 body = self.get_resource(
                     stack_identifier, resource_name)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # ignore this, as the resource may not have
                 # been created yet
                 pass
@@ -194,7 +196,7 @@
         while True:
             try:
                 body = self.get_stack(stack_identifier)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 if status == 'DELETE_COMPLETE':
                     return
             stack_name = body['stack_name']
diff --git a/tempest/services/volume/json/admin/volume_types_client.py b/tempest/services/volume/json/admin/volume_types_client.py
index 6049eb6..c905155 100644
--- a/tempest/services/volume/json/admin/volume_types_client.py
+++ b/tempest/services/volume/json/admin/volume_types_client.py
@@ -19,7 +19,6 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.common import service_client
-from tempest import exceptions
 
 
 class BaseVolumeTypesClientJSON(service_client.ServiceClient):
@@ -42,7 +41,7 @@
             else:
                 msg = (" resource value is either not defined or incorrect.")
                 raise lib_exc.UnprocessableEntity(msg)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/volume/json/qos_client.py b/tempest/services/volume/json/qos_client.py
index 6aa56f7..14ff506 100644
--- a/tempest/services/volume/json/qos_client.py
+++ b/tempest/services/volume/json/qos_client.py
@@ -27,7 +27,7 @@
     def is_resource_deleted(self, qos_id):
         try:
             self.get_qos(qos_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/volume/json/snapshots_client.py b/tempest/services/volume/json/snapshots_client.py
index 100b34c..8430b63 100644
--- a/tempest/services/volume/json/snapshots_client.py
+++ b/tempest/services/volume/json/snapshots_client.py
@@ -14,6 +14,8 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import service_client
 from tempest import exceptions
 from tempest.openstack.common import log as logging
@@ -127,7 +129,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_snapshot(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/volume/json/volumes_client.py b/tempest/services/volume/json/volumes_client.py
index d834905..b906cec 100644
--- a/tempest/services/volume/json/volumes_client.py
+++ b/tempest/services/volume/json/volumes_client.py
@@ -17,6 +17,8 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import service_client
 from tempest import config
 from tempest import exceptions
@@ -181,7 +183,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_volume(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/stress/cleanup.py b/tempest/stress/cleanup.py
index b52eca9..9bc55fa 100644
--- a/tempest/stress/cleanup.py
+++ b/tempest/stress/cleanup.py
@@ -95,7 +95,7 @@
         except Exception:
             pass
 
-    _, vols = admin_manager.volumes_client.list_volumes({"all_tenants": True})
+    vols = admin_manager.volumes_client.list_volumes({"all_tenants": True})
     LOG.info("Cleanup::remove %s volumes" % len(vols))
     for v in vols:
         try:
diff --git a/tempest/test.py b/tempest/test.py
index 281f0f2..28e1e2c 100644
--- a/tempest/test.py
+++ b/tempest/test.py
@@ -137,35 +137,6 @@
     return decorator
 
 
-def skip_because(*args, **kwargs):
-    """A decorator useful to skip tests hitting known bugs
-
-    @param bug: bug number causing the test to skip
-    @param condition: optional condition to be True for the skip to have place
-    @param interface: skip the test if it is the same as self._interface
-    """
-    def decorator(f):
-        @functools.wraps(f)
-        def wrapper(self, *func_args, **func_kwargs):
-            skip = False
-            if "condition" in kwargs:
-                if kwargs["condition"] is True:
-                    skip = True
-            elif "interface" in kwargs:
-                if kwargs["interface"] == self._interface:
-                    skip = True
-            else:
-                skip = True
-            if "bug" in kwargs and skip is True:
-                if not kwargs['bug'].isdigit():
-                    raise ValueError('bug must be a valid bug number')
-                msg = "Skipped until Bug: %s is resolved." % kwargs["bug"]
-                raise testtools.TestCase.skipException(msg)
-            return f(self, *func_args, **func_kwargs)
-        return wrapper
-    return decorator
-
-
 def requires_ext(*args, **kwargs):
     """A decorator to skip tests if an extension is not enabled
 
diff --git a/tempest/tests/test_decorators.py b/tempest/tests/test_decorators.py
index 32cefd0..1f1835e 100644
--- a/tempest/tests/test_decorators.py
+++ b/tempest/tests/test_decorators.py
@@ -150,70 +150,6 @@
                                      allow_inheritance=True)
 
 
-class TestSkipBecauseDecorator(BaseDecoratorsTest):
-    def _test_skip_because_helper(self, expected_to_skip=True,
-                                  **decorator_args):
-        class TestFoo(test.BaseTestCase):
-            _interface = 'json'
-
-            @test.skip_because(**decorator_args)
-            def test_bar(self):
-                return 0
-
-        t = TestFoo('test_bar')
-        if expected_to_skip:
-            self.assertRaises(testtools.TestCase.skipException, t.test_bar)
-        else:
-            # assert that test_bar returned 0
-            self.assertEqual(TestFoo('test_bar').test_bar(), 0)
-
-    def test_skip_because_bug(self):
-        self._test_skip_because_helper(bug='12345')
-
-    def test_skip_because_bug_and_interface_match(self):
-        self._test_skip_because_helper(bug='12346', interface='json')
-
-    def test_skip_because_bug_interface_not_match(self):
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12347', interface='xml')
-
-    def test_skip_because_bug_and_condition_true(self):
-        self._test_skip_because_helper(bug='12348', condition=True)
-
-    def test_skip_because_bug_and_condition_false(self):
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12349', condition=False)
-
-    def test_skip_because_bug_condition_false_and_interface_match(self):
-        """
-        Assure that only condition will be evaluated if both parameters are
-        passed.
-        """
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12350', condition=False,
-                                       interface='json')
-
-    def test_skip_because_bug_condition_true_and_interface_not_match(self):
-        """
-        Assure that only condition will be evaluated if both parameters are
-        passed.
-        """
-        self._test_skip_because_helper(bug='12351', condition=True,
-                                       interface='xml')
-
-    def test_skip_because_bug_without_bug_never_skips(self):
-        """Never skip without a bug parameter."""
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       condition=True)
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       interface='json')
-
-    def test_skip_because_invalid_bug_number(self):
-        """Raise ValueError if with an invalid bug number"""
-        self.assertRaises(ValueError, self._test_skip_because_helper,
-                          bug='critical_bug')
-
-
 class TestRequiresExtDecorator(BaseDecoratorsTest):
     def setUp(self):
         super(TestRequiresExtDecorator, self).setUp()