diff --git a/tempest/api/baremetal/admin/test_ports_negative.py b/tempest/api/baremetal/admin/test_ports_negative.py
index dd19edc..8dbdedf 100644
--- a/tempest/api/baremetal/admin/test_ports_negative.py
+++ b/tempest/api/baremetal/admin/test_ports_negative.py
@@ -14,7 +14,6 @@
 
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -32,19 +31,19 @@
         node_id = self.node['uuid']
         address = 'malformed:mac'
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_port, node_id=node_id, address=address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_nonexsistent_node_id(self):
         node_id = str(data_utils.rand_uuid())
         address = data_utils.rand_mac_address()
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=node_id,
-                          address=address)
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
+                          node_id=node_id, address=address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_port_malformed_uuid(self):
-        self.assertRaises(exc.BadRequest, self.client.show_port,
+        self.assertRaises(lib_exc.BadRequest, self.client.show_port,
                           'malformed:uuid')
 
     @test.attr(type=['negative', 'smoke'])
@@ -54,7 +53,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_port_by_mac_not_allowed(self):
-        self.assertRaises(exc.BadRequest, self.client.show_port,
+        self.assertRaises(lib_exc.BadRequest, self.client.show_port,
                           data_utils.rand_mac_address())
 
     @test.attr(type=['negative', 'smoke'])
@@ -71,15 +70,15 @@
     def test_create_port_no_mandatory_field_node_id(self):
         address = data_utils.rand_mac_address()
 
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=None,
+        self.assertRaises(lib_exc.BadRequest, self.create_port, node_id=None,
                           address=address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_no_mandatory_field_mac(self):
         node_id = self.node['uuid']
 
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=node_id,
-                          address=None)
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
+                          node_id=node_id, address=None)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_malformed_port_uuid(self):
@@ -87,13 +86,13 @@
         address = data_utils.rand_mac_address()
         uuid = 'malformed:uuid'
 
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=node_id,
-                          address=address, uuid=uuid)
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
+                          node_id=node_id, address=address, uuid=uuid)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_malformed_node_id(self):
         address = data_utils.rand_mac_address()
-        self.assertRaises(exc.BadRequest, self.create_port,
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
                           node_id='malformed:nodeid', address=address)
 
     @test.attr(type=['negative', 'smoke'])
@@ -117,7 +116,7 @@
                   'op': 'replace',
                   'value': 'new-value'}]
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, address,
                           patch)
 
@@ -147,7 +146,7 @@
         self.create_port(node_id=node_id, address=address)
 
         new_address = data_utils.rand_mac_address()
-        self.assertRaises(exc.BadRequest, self.client.update_port,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port,
                           uuid='malformed:uuid',
                           patch=[{'path': '/address', 'op': 'replace',
                                   'value': new_address}])
@@ -160,7 +159,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/nonexistent', ' op': 'add',
                             'value': 'value'}])
 
@@ -175,7 +174,7 @@
         patch = [{'path': '/node_uuid',
                   'op': 'replace',
                   'value': 'malformed:node_uuid'}]
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -206,7 +205,7 @@
         patch = [{'path': '/node_uuid',
                   'op': 'replace',
                   'value': data_utils.rand_uuid()}]
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -221,7 +220,7 @@
                   'op': 'replace',
                   'value': 'malformed:mac'}]
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -234,7 +233,7 @@
 
         patch = [{'path': '/nonexistent', ' op': 'replace', 'value': 'value'}]
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -245,7 +244,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/address', 'op': 'remove'}])
 
     @test.attr(type=['negative', 'smoke'])
@@ -256,7 +255,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/uuid', 'op': 'remove'}])
 
     @test.attr(type=['negative', 'smoke'])
@@ -267,7 +266,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/nonexistent', 'op': 'remove'}])
 
     @test.attr(type=['negative', 'smoke'])
@@ -276,7 +275,7 @@
         address = data_utils.rand_mac_address()
 
         self.create_port(node_id=node_id, address=address)
-        self.assertRaises(exc.BadRequest, self.client.delete_port, address)
+        self.assertRaises(lib_exc.BadRequest, self.client.delete_port, address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_update_port_mixed_ops_integrity(self):
@@ -306,7 +305,7 @@
                   'op': 'replace',
                   'value': 'value'}]
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           patch)
 
         # patch should not be applied
diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
index 48f6f94..fd44f7f 100644
--- a/tempest/api/compute/admin/test_aggregates_negative.py
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -18,7 +18,6 @@
 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
 
 
@@ -52,7 +51,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_create_aggregate_name_length_less_than_1(self):
         # the length of aggregate name should >= 1 and <=255
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_aggregate,
                           name='')
 
@@ -60,7 +59,7 @@
     def test_aggregate_create_aggregate_name_length_exceeds_255(self):
         # the length of aggregate name should >= 1 and <=255
         aggregate_name = 'a' * 256
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_aggregate,
                           name=aggregate_name)
 
diff --git a/tempest/api/compute/admin/test_fixed_ips_negative.py b/tempest/api/compute/admin/test_fixed_ips_negative.py
index b553397..f717291 100644
--- a/tempest/api/compute/admin/test_fixed_ips_negative.py
+++ b/tempest/api/compute/admin/test_fixed_ips_negative.py
@@ -16,7 +16,6 @@
 
 from tempest.api.compute import base
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -73,7 +72,7 @@
         # 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((lib_exc.NotFound, exceptions.BadRequest),
+        self.assertRaises((lib_exc.NotFound, lib_exc.BadRequest),
                           self.client.reserve_fixed_ip,
                           "my.invalid.ip", body)
 
@@ -81,6 +80,6 @@
     @test.services('network')
     def test_fixed_ip_with_invalid_action(self):
         body = {"invalid_action": "None"}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reserve_fixed_ip,
                           self.ip, body)
diff --git a/tempest/api/compute/admin/test_flavors.py b/tempest/api/compute/admin/test_flavors.py
index 360bcf7..8d5c5e3 100644
--- a/tempest/api/compute/admin/test_flavors.py
+++ b/tempest/api/compute/admin/test_flavors.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
 
 
@@ -210,7 +210,7 @@
         self.addCleanup(self.flavor_clean_up, flavor['id'])
 
         # Verify flavor is not used by other user
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.os.servers_client.create_server,
                           'test', self.image_ref, flavor['id'])
 
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 e414973..c22602a 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
@@ -18,7 +18,6 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -110,7 +109,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_update_mismatch_key(self):
         # the key will be updated should be match the key in the body
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_flavor_extra_spec,
                           self.flavor['id'],
                           "key2",
@@ -119,7 +118,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_update_more_key(self):
         # there should be just one item in the request body
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_flavor_extra_spec,
                           self.flavor['id'],
                           "key1",
diff --git a/tempest/api/compute/admin/test_hosts_negative.py b/tempest/api/compute/admin/test_hosts_negative.py
index 20429b1..8d70c44 100644
--- a/tempest/api/compute/admin/test_hosts_negative.py
+++ b/tempest/api/compute/admin/test_hosts_negative.py
@@ -16,7 +16,6 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -72,7 +71,7 @@
         # only 'status' and 'maintenance_mode' are the valid params.
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           hostname,
                           status='enable',
@@ -84,7 +83,7 @@
         # 'status' can only be 'enable' or 'disable'
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           hostname,
                           status='invalid',
@@ -95,7 +94,7 @@
         # 'maintenance_mode' can only be 'enable' or 'disable'
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           hostname,
                           status='enable',
@@ -106,7 +105,7 @@
         # 'status' or 'maintenance_mode' needed for host update
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           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 1e03bd0..5453ff4 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
@@ -19,7 +19,6 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,6 +43,6 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_get_instance_usage_audit_logs_with_invalid_time(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.adm_client.get_instance_usage_audit_log,
                           "invalid_time")
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 3ef2f80..7fd87f6 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -21,7 +21,6 @@
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -100,13 +99,13 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_reset_state_server_invalid_state(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reset_state, self.s1_id,
                           state='invalid')
 
     @test.attr(type=['negative', 'gate'])
     def test_reset_state_server_invalid_type(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reset_state, self.s1_id,
                           state=1)
 
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 b371f2d..0d88f6c 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
@@ -17,7 +17,6 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -52,7 +51,7 @@
         # Get usage for tenant with invalid date
         params = {'start': self.end,
                   'end': self.start}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.adm_client.get_tenant_usage,
                           self.client.tenant_id, params)
 
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 9697d57..08e73ca 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
@@ -20,7 +20,6 @@
 from tempest.api.compute.floating_ips import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -92,6 +91,6 @@
     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((lib_exc.NotFound, exceptions.BadRequest),
+        self.assertRaises((lib_exc.NotFound, lib_exc.BadRequest),
                           self.client.associate_floating_ip_to_server,
                           '', self.server_id)
diff --git a/tempest/api/compute/images/test_images_oneserver_negative.py b/tempest/api/compute/images/test_images_oneserver_negative.py
index 65a91b0..7f15ad1 100644
--- a/tempest/api/compute/images/test_images_oneserver_negative.py
+++ b/tempest/api/compute/images/test_images_oneserver_negative.py
@@ -19,7 +19,6 @@
 from tempest.api.compute 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
 
@@ -79,7 +78,7 @@
         # Return an error when creating image with invalid metadata
         snapshot_name = data_utils.rand_name('test-snap-')
         meta = {'': ''}
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           self.server_id, snapshot_name, meta)
 
     @test.attr(type=['negative', 'gate'])
@@ -87,7 +86,7 @@
         # Return an error when creating image with meta data over 256 chars
         snapshot_name = data_utils.rand_name('test-snap-')
         meta = {'a' * 260: 'b' * 260}
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           self.server_id, snapshot_name, meta)
 
     @test.attr(type=['negative', 'gate'])
@@ -112,7 +111,7 @@
         # Return an error if snapshot name over 256 characters is passed
 
         snapshot_name = data_utils.rand_name('a' * 260)
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           self.server_id, snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/compute/keypairs/test_keypairs_negative.py b/tempest/api/compute/keypairs/test_keypairs_negative.py
index 1586405..ea25527 100644
--- a/tempest/api/compute/keypairs/test_keypairs_negative.py
+++ b/tempest/api/compute/keypairs/test_keypairs_negative.py
@@ -18,7 +18,6 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -38,7 +37,7 @@
         # Keypair should not be created with a non RSA public key
         k_name = data_utils.rand_name('keypair-')
         pub_key = "ssh-rsa JUNK nova@ubuntu"
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self._create_keypair, k_name, pub_key)
 
     @test.attr(type=['negative', 'gate'])
@@ -53,7 +52,7 @@
         # Keypair should not be created with an empty public key
         k_name = data_utils.rand_name("keypair-")
         pub_key = ' '
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name, pub_key)
 
     @test.attr(type=['negative', 'gate'])
@@ -61,7 +60,7 @@
         # Keypair should not be created when public key bits are too long
         k_name = data_utils.rand_name("keypair-")
         pub_key = 'ssh-rsa ' + 'A' * 2048 + ' openstack@ubuntu'
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name, pub_key)
 
     @test.attr(type=['negative', 'gate'])
@@ -77,19 +76,19 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_with_empty_name_string(self):
         # Keypairs with name being an empty string should not be created
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           '')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_with_long_keynames(self):
         # Keypairs with name longer than 255 chars should not be created
         k_name = 'keypair-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_invalid_name(self):
         # Keypairs with name being an invalid name should not be created
         k_name = 'key_/.\@:'
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name)
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 c8da63f..dc63936 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
@@ -18,7 +18,6 @@
 from tempest.api.compute.security_groups import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -62,7 +61,7 @@
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -85,7 +84,7 @@
                                                    to_port)
         self.addCleanup(self.client.delete_security_group_rule, rule['id'])
         # Add the same rule to the group should fail
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -102,7 +101,7 @@
         from_port = 22
         to_port = 22
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -118,7 +117,7 @@
         ip_protocol = 'tcp'
         from_port = data_utils.rand_int_id(start=65536)
         to_port = 22
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -134,7 +133,7 @@
         ip_protocol = 'tcp'
         from_port = 22
         to_port = data_utils.rand_int_id(start=65536)
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -150,7 +149,7 @@
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 21
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           secgroup_id, ip_protocol, from_port, to_port)
 
diff --git a/tempest/api/compute/security_groups/test_security_groups.py b/tempest/api/compute/security_groups/test_security_groups.py
index eff91b0..0f68665 100644
--- a/tempest/api/compute/security_groups/test_security_groups.py
+++ b/tempest/api/compute/security_groups/test_security_groups.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.security_groups import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -101,7 +102,7 @@
 
         # Check that we are not able to delete the security
         # group since it is in use by an active server
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.delete_security_group,
                           sg['id'])
 
@@ -113,7 +114,7 @@
 
         # Check that we are not able to delete the other security
         # group since it is in use by an active server
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.delete_security_group,
                           sg2['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 a083406..4c8de27 100644
--- a/tempest/api/compute/security_groups/test_security_groups_negative.py
+++ b/tempest/api/compute/security_groups/test_security_groups_negative.py
@@ -20,7 +20,6 @@
 from tempest.api.compute.security_groups import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -66,15 +65,15 @@
         # as an empty string/with white spaces/chars more than 255
         s_description = data_utils.rand_name('description-')
         # Create Security Group with empty string as group name
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, "", s_description)
         # Create Security Group with white space in group name
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, " ",
                           s_description)
         # Create Security Group with group name longer than 255 chars
         s_name = 'securitygroup-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name,
                           s_description)
 
@@ -87,14 +86,14 @@
         # as an empty string/with white spaces/chars more than 255
         s_name = data_utils.rand_name('securitygroup-')
         # Create Security Group with empty string as description
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name, "")
         # Create Security Group with white space in description
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name, " ")
         # Create Security Group with group description longer than 255 chars
         s_description = 'description-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name,
                           s_description)
 
@@ -109,7 +108,7 @@
         s_description = data_utils.rand_name('description-')
         self.create_security_group(s_name, s_description)
         # Now try the Security Group with the same 'Name'
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name,
                           s_description)
 
@@ -124,7 +123,7 @@
                 default_security_group_id = body[i]['id']
                 break
         # Deleting the "default" Security Group
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.delete_security_group,
                           default_security_group_id)
 
@@ -154,7 +153,7 @@
         s_description = data_utils.rand_name('description-')
         # Create a non int sg_id
         sg_id_invalid = data_utils.rand_name('sg-')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group, sg_id_invalid,
                           name=s_name, description=s_description)
 
@@ -169,7 +168,7 @@
         securitygroup_id = securitygroup['id']
         # Update Security Group with group name longer than 255 chars
         s_new_name = 'securitygroup-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group,
                           securitygroup_id, name=s_new_name)
 
@@ -184,7 +183,7 @@
         securitygroup_id = securitygroup['id']
         # Update Security Group with group description longer than 255 chars
         s_new_des = 'des-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group,
                           securitygroup_id, description=s_new_des)
 
diff --git a/tempest/api/compute/servers/test_list_servers_negative.py b/tempest/api/compute/servers/test_list_servers_negative.py
index 3827ad9..2f12882 100644
--- a/tempest/api/compute/servers/test_list_servers_negative.py
+++ b/tempest/api/compute/servers/test_list_servers_negative.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from six import moves
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -113,19 +113,19 @@
     @test.attr(type=['negative', 'gate'])
     def test_list_servers_by_limits_pass_string(self):
         # Return an error if a string value is passed for limit
-        self.assertRaises(exceptions.BadRequest, self.client.list_servers,
+        self.assertRaises(lib_exc.BadRequest, self.client.list_servers,
                           {'limit': 'testing'})
 
     @test.attr(type=['negative', 'gate'])
     def test_list_servers_by_limits_pass_negative_value(self):
         # Return an error if a negative value for limit is passed
-        self.assertRaises(exceptions.BadRequest, self.client.list_servers,
+        self.assertRaises(lib_exc.BadRequest, self.client.list_servers,
                           {'limit': -1})
 
     @test.attr(type=['negative', 'gate'])
     def test_list_servers_by_changes_since_invalid_date(self):
         # Return an error when invalid date format is passed
-        self.assertRaises(exceptions.BadRequest, self.client.list_servers,
+        self.assertRaises(lib_exc.BadRequest, self.client.list_servers,
                           {'changes-since': '2011/01/01'})
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/compute/servers/test_multiple_create_negative.py b/tempest/api/compute/servers/test_multiple_create_negative.py
index dc83bfc..eca97c1 100644
--- a/tempest/api/compute/servers/test_multiple_create_negative.py
+++ b/tempest/api/compute/servers/test_multiple_create_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
 
 
@@ -38,31 +39,31 @@
     @test.attr(type=['negative', 'gate'])
     def test_min_count_less_than_one(self):
         invalid_min_count = 0
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           min_count=invalid_min_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_min_count_non_integer(self):
         invalid_min_count = 2.5
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           min_count=invalid_min_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_max_count_less_than_one(self):
         invalid_max_count = 0
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           max_count=invalid_max_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_max_count_non_integer(self):
         invalid_max_count = 2.5
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           max_count=invalid_max_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_max_count_less_than_min_count(self):
         min_count = 3
         max_count = 2
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           min_count=min_count,
                           max_count=max_count)
diff --git a/tempest/api/compute/servers/test_server_metadata_negative.py b/tempest/api/compute/servers/test_server_metadata_negative.py
index 5357f80..441c965 100644
--- a/tempest/api/compute/servers/test_server_metadata_negative.py
+++ b/tempest/api/compute/servers/test_server_metadata_negative.py
@@ -17,7 +17,6 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -42,7 +41,7 @@
         for sz in [256, 257, 511, 1023]:
             key = "k" * sz
             meta = {key: 'data1'}
-            self.assertRaises((exceptions.BadRequest, lib_exc.OverLimit),
+            self.assertRaises((lib_exc.BadRequest, lib_exc.OverLimit),
                               self.create_test_server,
                               meta=meta)
 
@@ -52,7 +51,7 @@
     def test_create_server_metadata_blank_key(self):
         # Blank key should trigger an error.
         meta = {'': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           meta=meta)
 
@@ -78,7 +77,7 @@
         # Raise BadRequest if key in uri does not match
         # the key passed in body.
         meta = {'testkey': 'testvalue'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.set_server_metadata_item,
                           self.server_id, 'key', meta)
 
@@ -106,7 +105,7 @@
     def test_update_metadata_with_blank_key(self):
         # Blank key should trigger an error
         meta = {'': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_server_metadata,
                           self.server_id, meta=meta)
 
@@ -148,7 +147,7 @@
         # Raise a bad request error for blank key.
         # set_server_metadata will replace all metadata with new value
         meta = {'': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.set_server_metadata,
                           self.server_id, meta=meta)
 
@@ -157,6 +156,6 @@
         # Raise a bad request error for a missing metadata field
         # set_server_metadata will replace all metadata with new value
         meta = {'meta1': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.set_server_metadata,
                           self.server_id, meta=meta, no_metadata_field=True)
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index 830c8d0..d89aff4 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -22,7 +22,6 @@
 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
@@ -54,7 +53,7 @@
     def test_server_name_blank(self):
         # Create a server with name parameter empty
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           name='')
 
@@ -66,7 +65,7 @@
         person = [{'path': '/etc/testfile.txt',
                    'contents': file_contents}]
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           personality=person)
 
@@ -74,7 +73,7 @@
     def test_create_with_invalid_image(self):
         # Create a server with an unknown image
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           image_id=-1)
 
@@ -82,7 +81,7 @@
     def test_create_with_invalid_flavor(self):
         # Create a server with an unknown flavor
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           flavor=-1,)
 
@@ -91,7 +90,7 @@
         # An access IPv4 address must match a valid address pattern
 
         IPv4 = '1.1.1.1.1.1'
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server, accessIPv4=IPv4)
 
     @test.attr(type=['negative', 'gate'])
@@ -100,7 +99,7 @@
 
         IPv6 = 'notvalid'
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server, accessIPv6=IPv6)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
@@ -119,7 +118,7 @@
     def test_resize_server_with_non_existent_flavor(self):
         # Resize a server with non-existent flavor
         nonexistent_flavor = data_utils.rand_uuid()
-        self.assertRaises(exceptions.BadRequest, self.client.resize,
+        self.assertRaises(lib_exc.BadRequest, self.client.resize,
                           self.server_id, flavor_ref=nonexistent_flavor)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
@@ -127,7 +126,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_resize_server_with_null_flavor(self):
         # Resize a server with null flavor
-        self.assertRaises(exceptions.BadRequest, self.client.resize,
+        self.assertRaises(lib_exc.BadRequest, self.client.resize,
                           self.server_id, flavor_ref="")
 
     @test.attr(type=['negative', 'gate'])
@@ -174,7 +173,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_numeric_server_name(self):
         server_name = 12345
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           name=server_name)
 
@@ -183,7 +182,7 @@
         # Create a server with name length exceeding 256 characters
 
         server_name = 'a' * 256
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           name=server_name)
 
@@ -193,7 +192,7 @@
 
         networks = [{'fixed_ip': '10.0.1.1', 'uuid': 'a-b-c-d-e-f-g-h-i-j'}]
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           networks=networks)
 
@@ -202,7 +201,7 @@
         # Pass a non-existent keypair while creating a server
 
         key_name = data_utils.rand_name('key')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           key_name=key_name)
 
@@ -211,7 +210,7 @@
         # Pass really long metadata while creating a server
 
         metadata = {'a': 'b' * 260}
-        self.assertRaises((exceptions.BadRequest, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.BadRequest, lib_exc.OverLimit),
                           self.create_test_server,
                           meta=metadata)
 
@@ -232,7 +231,7 @@
         server_name = data_utils.rand_name('server')
         new_name = ''
 
-        self.assertRaises(exceptions.BadRequest, self.client.update_server,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_server,
                           server_name, name=new_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -249,7 +248,7 @@
         # Update name of server exceed the name length limit
 
         new_name = 'a' * 256
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_server,
                           self.server_id,
                           name=new_name)
@@ -287,7 +286,7 @@
         # Create a server with a nonexistent security group
 
         security_groups = [{'name': 'does_not_exist'}]
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           security_groups=security_groups)
 
diff --git a/tempest/api/compute/test_authorization.py b/tempest/api/compute/test_authorization.py
index 10d8bfa..754b15a 100644
--- a/tempest/api/compute/test_authorization.py
+++ b/tempest/api/compute/test_authorization.py
@@ -21,7 +21,6 @@
 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
 from tempest import test
 
@@ -168,7 +167,7 @@
     @test.attr(type='gate')
     def test_create_server_with_unauthorized_image(self):
         # Server creation with another user's image should fail
-        self.assertRaises(exceptions.BadRequest, self.alt_client.create_server,
+        self.assertRaises(lib_exc.BadRequest, self.alt_client.create_server,
                           'test', self.image['id'], self.flavor_ref)
 
     @test.attr(type='gate')
@@ -180,7 +179,7 @@
             request_part='url',
             auth_data=self.client.auth_provider.auth_data
         )
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.alt_client.create_server, 'test',
                           self.image['id'], self.flavor_ref)
 
@@ -198,7 +197,7 @@
             )
             resp = {}
             resp['status'] = None
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.alt_keypairs_client.create_keypair, k_name)
         finally:
             # Next request the base_url is back to normal
@@ -249,7 +248,7 @@
             )
             resp = {}
             resp['status'] = None
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.alt_security_client.create_security_group,
                               s_name, s_description)
         finally:
@@ -290,7 +289,7 @@
             )
             resp = {}
             resp['status'] = None
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.alt_security_client.
                               create_security_group_rule,
                               parent_group_id, ip_protocol, from_port,
diff --git a/tempest/api/compute/test_live_block_migration_negative.py b/tempest/api/compute/test_live_block_migration_negative.py
index 1583278..586bc5c 100644
--- a/tempest/api/compute/test_live_block_migration_negative.py
+++ b/tempest/api/compute/test_live_block_migration_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
 
 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
@@ -48,6 +48,6 @@
         server = self.create_test_server(wait_until="ACTIVE")
         server_id = server['id']
 
-        self.assertRaises(exceptions.BadRequest, self._migrate_server_to,
+        self.assertRaises(lib_exc.BadRequest, self._migrate_server_to,
                           server_id, target_host)
         self.servers_client.wait_for_server_status(server_id, 'ACTIVE')
diff --git a/tempest/api/compute/volumes/test_volumes_negative.py b/tempest/api/compute/volumes/test_volumes_negative.py
index 53253c9..ed54aaf 100644
--- a/tempest/api/compute/volumes/test_volumes_negative.py
+++ b/tempest/api/compute/volumes/test_volumes_negative.py
@@ -20,7 +20,6 @@
 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
@@ -58,7 +57,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='#$%', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -67,7 +66,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -75,7 +74,7 @@
         # Negative: Should not be able to create volume with size zero
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='0', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/identity/admin/test_roles_negative.py b/tempest/api/identity/admin/test_roles_negative.py
index 2c51715..c38e6e0 100644
--- a/tempest/api/identity/admin/test_roles_negative.py
+++ b/tempest/api/identity/admin/test_roles_negative.py
@@ -18,7 +18,6 @@
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -49,7 +48,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_role_create_blank_name(self):
         # Should not be able to create a role with a blank name
-        self.assertRaises(exceptions.BadRequest, self.client.create_role, '')
+        self.assertRaises(lib_exc.BadRequest, self.client.create_role, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_role_by_unauthorized_user(self):
diff --git a/tempest/api/identity/admin/test_tenant_negative.py b/tempest/api/identity/admin/test_tenant_negative.py
index 16ea96a..db51f14 100644
--- a/tempest/api/identity/admin/test_tenant_negative.py
+++ b/tempest/api/identity/admin/test_tenant_negative.py
@@ -18,7 +18,6 @@
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -99,14 +98,14 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_tenant_with_empty_name(self):
         # Tenant name should not be empty
-        self.assertRaises(exceptions.BadRequest, self.client.create_tenant,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_tenant,
                           name='')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_tenants_name_length_over_64(self):
         # Tenant name length should not be greater than 64 characters
         tenant_name = 'a' * 65
-        self.assertRaises(exceptions.BadRequest, self.client.create_tenant,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_tenant,
                           tenant_name)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/identity/admin/test_users_negative.py b/tempest/api/identity/admin/test_users_negative.py
index db8c564..99993b9 100644
--- a/tempest/api/identity/admin/test_users_negative.py
+++ b/tempest/api/identity/admin/test_users_negative.py
@@ -18,7 +18,6 @@
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,7 +43,7 @@
     def test_create_user_with_empty_name(self):
         # User with an empty name should not be created
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.BadRequest, self.client.create_user, '',
+        self.assertRaises(lib_exc.BadRequest, self.client.create_user, '',
                           self.alt_password, self.data.tenant['id'],
                           self.alt_email)
 
@@ -52,7 +51,7 @@
     def test_create_user_with_name_length_over_255(self):
         # Length of user name filed should be restricted to 255 characters
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.BadRequest, self.client.create_user,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_user,
                           'a' * 256, self.alt_password,
                           self.data.tenant['id'], self.alt_email)
 
@@ -91,7 +90,7 @@
         # Attempt to create a user with valid enabled para should fail
         self.data.setup_test_tenant()
         name = data_utils.rand_name('test_user_')
-        self.assertRaises(exceptions.BadRequest, self.client.create_user,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_user,
                           name, self.alt_password,
                           self.data.tenant['id'],
                           self.alt_email, enabled=3)
diff --git a/tempest/api/identity/admin/v3/test_endpoints_negative.py b/tempest/api/identity/admin/v3/test_endpoints_negative.py
index 9846010..cf41f9c 100644
--- a/tempest/api/identity/admin/v3/test_endpoints_negative.py
+++ b/tempest/api/identity/admin/v3/test_endpoints_negative.py
@@ -14,10 +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.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -50,7 +50,7 @@
         interface = 'public'
         url = data_utils.rand_url()
         region = data_utils.rand_name('region')
-        self.assertRaises(exceptions.BadRequest, self.client.create_endpoint,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_endpoint,
                           self.service_id, interface, url, region=region,
                           force_enabled='False')
 
@@ -60,7 +60,7 @@
         interface = 'public'
         url = data_utils.rand_url()
         region = data_utils.rand_name('region')
-        self.assertRaises(exceptions.BadRequest, self.client.create_endpoint,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_endpoint,
                           self.service_id, interface, url, region=region,
                           force_enabled='True')
 
@@ -75,7 +75,7 @@
                                         url1, region=region1, enabled=True))
         self.addCleanup(self.client.delete_endpoint, endpoint_for_update['id'])
 
-        self.assertRaises(exceptions.BadRequest, self.client.update_endpoint,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_endpoint,
                           endpoint_for_update['id'], force_enabled=enabled)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/identity/admin/v3/test_projects_negative.py b/tempest/api/identity/admin/v3/test_projects_negative.py
index fc013c5..a194198 100644
--- a/tempest/api/identity/admin/v3/test_projects_negative.py
+++ b/tempest/api/identity/admin/v3/test_projects_negative.py
@@ -17,7 +17,6 @@
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -50,14 +49,14 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_project_with_empty_name(self):
         # Project name should not be empty
-        self.assertRaises(exceptions.BadRequest, self.client.create_project,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_project,
                           name='')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_projects_name_length_over_64(self):
         # Project name length should not be greater than 64 characters
         project_name = 'a' * 65
-        self.assertRaises(exceptions.BadRequest, self.client.create_project,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_project,
                           project_name)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
index fd62004..48201ec 100644
--- a/tempest/api/identity/admin/v3/test_trusts.py
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -20,7 +20,6 @@
 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 timeutils
 from tempest import test
 
@@ -237,7 +236,7 @@
         # is rejected with the correct error
         # with an expiry specified
         expires_str = 'bad.123Z'
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_trust,
                           expires=expires_str)
 
diff --git a/tempest/api/image/v1/test_images_negative.py b/tempest/api/image/v1/test_images_negative.py
index b144a83..698bac0 100644
--- a/tempest/api/image/v1/test_images_negative.py
+++ b/tempest/api/image/v1/test_images_negative.py
@@ -16,7 +16,6 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.image import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -26,12 +25,12 @@
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_container_format(self):
         # Negative tests for invalid data supplied to POST /images
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'wrong', 'vhd')
 
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_disk_format(self):
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'bare', 'wrong')
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/image/v2/test_images_member_negative.py b/tempest/api/image/v2/test_images_member_negative.py
index 4402af9..068a6e5 100644
--- a/tempest/api/image/v2/test_images_member_negative.py
+++ b/tempest/api/image/v2/test_images_member_negative.py
@@ -13,7 +13,6 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.image import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -25,7 +24,7 @@
         member = self.os_img_client.add_member(image_id,
                                                self.alt_tenant_id)
         self.assertEqual(member['status'], 'pending')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.alt_img_client.update_member_status,
                           image_id, self.alt_tenant_id, 'notavalidstatus')
 
diff --git a/tempest/api/image/v2/test_images_negative.py b/tempest/api/image/v2/test_images_negative.py
index d32fc3b..9f0ad2d 100644
--- a/tempest/api/image/v2/test_images_negative.py
+++ b/tempest/api/image/v2/test_images_negative.py
@@ -19,7 +19,6 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.image import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -85,10 +84,10 @@
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_container_format(self):
         # Negative tests for invalid data supplied to POST /images
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'wrong', 'vhd')
 
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_disk_format(self):
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'bare', 'wrong')
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index 4cb1485..e8c8de3 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -223,7 +223,7 @@
                     gateway_ip=gateway_ip,
                     **kwargs)
                 break
-            except exceptions.BadRequest as e:
+            except lib_exc.BadRequest as e:
                 is_overlapping_cidr = 'overlaps with another subnet' in str(e)
                 if not is_overlapping_cidr:
                     raise
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index f7a6fb7..1b28bac 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -21,7 +21,6 @@
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
@@ -146,7 +145,7 @@
         ):
             kwargs = {'ipv6_ra_mode': ra_mode,
                       'ipv6_address_mode': add_mode}
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.create_subnet,
                               self.network,
                               **kwargs)
@@ -329,7 +328,7 @@
                                    subnet["allocation_pools"][0]["end"])
         ip = netaddr.IPAddress(random.randrange(
             ip_range.last + 1, ip_range.last + 10)).format()
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_port,
                           self.network,
                           fixed_ips=[{'subnet_id': subnet['id'],
diff --git a/tempest/api/network/test_floating_ips_negative.py b/tempest/api/network/test_floating_ips_negative.py
index 81eedd4..7d70976 100644
--- a/tempest/api/network/test_floating_ips_negative.py
+++ b/tempest/api/network/test_floating_ips_negative.py
@@ -19,7 +19,6 @@
 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
@@ -59,7 +58,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_floatingip_in_private_network(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_floatingip,
                           floating_network_id=self.network['id'],
                           port_id=self.port['id'],
diff --git a/tempest/api/network/test_routers_negative.py b/tempest/api/network/test_routers_negative.py
index 655fa58..67a6c94 100644
--- a/tempest/api/network/test_routers_negative.py
+++ b/tempest/api/network/test_routers_negative.py
@@ -19,7 +19,6 @@
 from tempest.api.network import base_routers as base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -54,7 +53,7 @@
             network_name=data_utils.rand_name('router-negative-'))
         sub_cidr = netaddr.IPNetwork(self.tenant_cidr).next()
         self.create_subnet(alt_network, cidr=sub_cidr)
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_router,
                           self.router['id'],
                           external_gateway_info={
@@ -70,7 +69,7 @@
         subnet02 = self.create_subnet(network02)
         self._add_router_interface_with_subnet_id(self.router['id'],
                                                   subnet01['id'])
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self._add_router_interface_with_subnet_id,
                           self.router['id'],
                           subnet02['id'])
diff --git a/tempest/api/network/test_security_groups_negative.py b/tempest/api/network/test_security_groups_negative.py
index 47b218c..0da1aac 100644
--- a/tempest/api/network/test_security_groups_negative.py
+++ b/tempest/api/network/test_security_groups_negative.py
@@ -19,7 +19,6 @@
 
 from tempest.api.network import base_security_groups as base
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -64,7 +63,7 @@
         # Create rule with bad protocol name
         pname = 'bad_protocol_name'
         self.assertRaises(
-            exceptions.BadRequest, self.client.create_security_group_rule,
+            lib_exc.BadRequest, self.client.create_security_group_rule,
             security_group_id=group_create_body['security_group']['id'],
             protocol=pname, direction='ingress', ethertype=self.ethertype)
 
@@ -76,7 +75,7 @@
         prefix = ['192.168.1./24', '192.168.1.1/33', 'bad_prefix', '256']
         for remote_ip_prefix in prefix:
             self.assertRaises(
-                exceptions.BadRequest, self.client.create_security_group_rule,
+                lib_exc.BadRequest, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='tcp', direction='ingress', ethertype=self.ethertype,
                 remote_ip_prefix=remote_ip_prefix)
@@ -103,7 +102,7 @@
         # Create rule specifying both remote_ip_prefix and remote_group_id
         prefix = self._tenant_network_cidr
         self.assertRaises(
-            exceptions.BadRequest, self.client.create_security_group_rule,
+            lib_exc.BadRequest, self.client.create_security_group_rule,
             security_group_id=sg1_body['security_group']['id'],
             protocol='tcp', direction='ingress',
             ethertype=self.ethertype, remote_ip_prefix=prefix,
@@ -116,7 +115,7 @@
         # Create rule with bad ethertype
         ethertype = 'bad_ethertype'
         self.assertRaises(
-            exceptions.BadRequest, self.client.create_security_group_rule,
+            lib_exc.BadRequest, self.client.create_security_group_rule,
             security_group_id=group_create_body['security_group']['id'],
             protocol='udp', direction='ingress', ethertype=ethertype)
 
@@ -132,7 +131,7 @@
                   (-16, 65536, 'Invalid value for port')]
         for pmin, pmax, msg in states:
             ex = self.assertRaises(
-                exceptions.BadRequest, self.client.create_security_group_rule,
+                lib_exc.BadRequest, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='tcp', port_range_min=pmin, port_range_max=pmax,
                 direction='ingress', ethertype=self.ethertype)
@@ -144,7 +143,7 @@
                   (300, 1, 'Invalid value for ICMP type')]
         for pmin, pmax, msg in states:
             ex = self.assertRaises(
-                exceptions.BadRequest, self.client.create_security_group_rule,
+                lib_exc.BadRequest, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='icmp', port_range_min=pmin, port_range_max=pmax,
                 direction='ingress', ethertype=self.ethertype)
@@ -207,7 +206,7 @@
                   'ip_prefix': CONF.network.tenant_network_v6_cidr})
         for pair in pairs:
             self.assertRaisesRegexp(
-                exceptions.BadRequest,
+                lib_exc.BadRequest,
                 "Conflicting value ethertype",
                 self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
diff --git a/tempest/api/orchestration/stacks/test_limits.py b/tempest/api/orchestration/stacks/test_limits.py
index 8ee62ab..5f7f954 100644
--- a/tempest/api/orchestration/stacks/test_limits.py
+++ b/tempest/api/orchestration/stacks/test_limits.py
@@ -11,11 +11,11 @@
 #    under the License.
 
 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
 
 CONF = config.CONF
@@ -34,7 +34,7 @@
 Description: '%s'
 Outputs:
   Foo: bar''' % fill
-        ex = self.assertRaises(exceptions.BadRequest, self.create_stack,
+        ex = self.assertRaises(lib_exc.BadRequest, self.create_stack,
                                stack_name, template)
         self.assertIn('Template exceeds maximum allowed size', str(ex))
 
@@ -48,6 +48,6 @@
         for i in range(num_resources):
             template += rsrc_snippet % i
 
-        ex = self.assertRaises(exceptions.BadRequest, self.create_stack,
+        ex = self.assertRaises(lib_exc.BadRequest, self.create_stack,
                                stack_name, template)
         self.assertIn('Maximum resources per stack exceeded', str(ex))
diff --git a/tempest/api/orchestration/stacks/test_templates_negative.py b/tempest/api/orchestration/stacks/test_templates_negative.py
index 9082107..9a5bc68 100644
--- a/tempest/api/orchestration/stacks/test_templates_negative.py
+++ b/tempest/api/orchestration/stacks/test_templates_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.orchestration import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -37,7 +38,7 @@
     @test.attr(type=['gate', 'negative'])
     def test_validate_template_url(self):
         """Validating template passing url to it."""
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.validate_template_url,
                           template_url=self.invalid_template_url,
                           parameters=self.parameters)
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 2f3b382..23979cd 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
@@ -19,7 +19,6 @@
 
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,7 +43,7 @@
         # Should not update volume type extra specs with no body
         extra_spec = {"spec1": "val2"}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], extra_spec.keys()[0], None)
 
@@ -53,7 +52,7 @@
         # Should not update volume type extra specs with nonexistent id.
         extra_spec = {"spec1": "val2"}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], str(uuid.uuid4()),
             extra_spec)
@@ -63,7 +62,7 @@
         # Should not update volume type extra specs with none id.
         extra_spec = {"spec1": "val2"}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], None, extra_spec)
 
@@ -73,7 +72,7 @@
             # body.
         extra_spec = {"spec1": "val2", 'spec2': 'val1'}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], extra_spec.keys()[0],
             extra_spec)
@@ -92,7 +91,7 @@
     def test_create_none_body(self):
         # Should not create volume type extra spec for none POST body.
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.create_volume_type_extra_specs,
             self.volume_type['id'], None)
 
@@ -100,7 +99,7 @@
     def test_create_invalid_body(self):
         # Should not create volume type extra spec for invalid POST body.
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.create_volume_type_extra_specs,
             self.volume_type['id'], ['invalid'])
 
diff --git a/tempest/api/volume/admin/test_volume_types_negative.py b/tempest/api/volume/admin/test_volume_types_negative.py
index 77ca34c..a40f1c4 100644
--- a/tempest/api/volume/admin/test_volume_types_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_negative.py
@@ -18,7 +18,6 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.volume import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -37,7 +36,7 @@
     @test.attr(type='gate')
     def test_create_with_empty_name(self):
         # Should not be able to create volume type with an empty name.
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.volume_types_client.create_volume_type, '')
 
     @test.attr(type='gate')
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index 39aba01..595ddf4 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -19,7 +19,6 @@
 
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -54,7 +53,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='#$%', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -63,7 +62,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -71,7 +70,7 @@
         # Should not be able to create volume with size zero
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='0', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -79,7 +78,7 @@
         # Should not be able to create volume with size negative
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='-1', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -180,21 +179,21 @@
     def test_volume_extend_with_size_smaller_than_original_size(self):
         # Extend volume with smaller size than original size.
         extend_size = 0
-        self.assertRaises(exceptions.BadRequest, self.client.extend_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.extend_volume,
                           self.volume['id'], extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_extend_with_non_number_size(self):
         # Extend volume when size is non number.
         extend_size = 'abc'
-        self.assertRaises(exceptions.BadRequest, self.client.extend_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.extend_volume,
                           self.volume['id'], extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_extend_with_None_size(self):
         # Extend volume with None size.
         extend_size = None
-        self.assertRaises(exceptions.BadRequest, self.client.extend_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.extend_volume,
                           self.volume['id'], extend_size)
 
     @test.attr(type=['negative', 'gate'])
@@ -228,7 +227,7 @@
         # Mark volume as reserved.
         self.client.reserve_volume(self.volume['id'])
         # Mark volume which is marked as reserved before
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reserve_volume,
                           self.volume['id'])
         # Unmark volume as reserved.
diff --git a/tempest/cmd/javelin.py b/tempest/cmd/javelin.py
index 9172972..d22858d 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -115,7 +115,6 @@
 
 import tempest.auth
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest.openstack.common import timeutils
 from tempest.services.compute.json import flavors_client
@@ -708,7 +707,7 @@
                                           cidr=subnet['range'],
                                           name=subnet['name'],
                                           ip_version=ip_version)
-        except exceptions.BadRequest as e:
+        except lib_exc.BadRequest as e:
             is_overlapping_cidr = 'overlaps with another subnet' in str(e)
             if not is_overlapping_cidr:
                 raise
diff --git a/tempest/common/isolated_creds.py b/tempest/common/isolated_creds.py
index 1cfb963..f81c3ed 100644
--- a/tempest/common/isolated_creds.py
+++ b/tempest/common/isolated_creds.py
@@ -198,7 +198,7 @@
                                       tenant_id=tenant_id,
                                       ip_version=4)
                 break
-            except exceptions.BadRequest as e:
+            except lib_exc.BadRequest as e:
                 if 'overlaps with another subnet' not in str(e):
                     raise
         else:
diff --git a/tempest/common/service_client.py b/tempest/common/service_client.py
index 0812b99..8949609 100644
--- a/tempest/common/service_client.py
+++ b/tempest/common/service_client.py
@@ -16,7 +16,6 @@
 from tempest_lib import exceptions as lib_exceptions
 
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
@@ -59,8 +58,6 @@
                 method, url,
                 extra_headers=extra_headers,
                 headers=headers, body=body)
-        except lib_exceptions.BadRequest as ex:
-            raise exceptions.BadRequest(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