diff --git a/tempest/api/compute/admin/test_flavors_access.py b/tempest/api/compute/admin/test_flavors_access.py
index 107b23d..8213839 100644
--- a/tempest/api/compute/admin/test_flavors_access.py
+++ b/tempest/api/compute/admin/test_flavors_access.py
@@ -15,6 +15,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import uuid
+
 from tempest.api import compute
 from tempest.api.compute import base
 from tempest.common.utils.data_utils import rand_int_id
@@ -123,6 +125,48 @@
                           new_flavor['id'],
                           self.tenant_id)
 
+    @attr(type=['negative', 'gate'])
+    def test_add_flavor_access_duplicate(self):
+        # Create a new flavor.
+        flavor_name = rand_name(self.flavor_name_prefix)
+        new_flavor_id = rand_int_id(start=1000)
+        resp, new_flavor = self.client.create_flavor(flavor_name,
+                                                     self.ram, self.vcpus,
+                                                     self.disk,
+                                                     new_flavor_id,
+                                                     is_public='False')
+        self.addCleanup(self.client.delete_flavor, new_flavor['id'])
+
+        # Add flavor access to a tenant.
+        self.client.add_flavor_access(new_flavor['id'], self.tenant_id)
+        self.addCleanup(self.client.remove_flavor_access,
+                        new_flavor['id'], self.tenant_id)
+
+        # An exception should be raised when adding flavor access to the same
+        # tenant
+        self.assertRaises(exceptions.Duplicate,
+                          self.client.add_flavor_access,
+                          new_flavor['id'],
+                          self.tenant_id)
+
+    @attr(type=['negative', 'gate'])
+    def test_remove_flavor_access_not_found(self):
+        # Create a new flavor.
+        flavor_name = rand_name(self.flavor_name_prefix)
+        new_flavor_id = rand_int_id(start=1000)
+        resp, new_flavor = self.client.create_flavor(flavor_name,
+                                                     self.ram, self.vcpus,
+                                                     self.disk,
+                                                     new_flavor_id,
+                                                     is_public='False')
+        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.client.remove_flavor_access,
+                          new_flavor['id'],
+                          str(uuid.uuid4()))
+
 
 class FlavorsAdminTestXML(FlavorsAccessTestJSON):
     _interface = 'xml'
diff --git a/tempest/api/compute/servers/test_list_server_filters.py b/tempest/api/compute/servers/test_list_server_filters.py
index c469827..8e95671 100644
--- a/tempest/api/compute/servers/test_list_server_filters.py
+++ b/tempest/api/compute/servers/test_list_server_filters.py
@@ -57,32 +57,26 @@
             raise RuntimeError("Image %s (image_ref_alt) was not found!" %
                                cls.image_ref_alt)
 
-        cls.s1_name = rand_name('server')
-        resp, cls.s1 = cls.client.create_server(cls.s1_name, cls.image_ref,
-                                                cls.flavor_ref)
-        cls.s2_name = rand_name('server')
-        resp, cls.s2 = cls.client.create_server(cls.s2_name, cls.image_ref_alt,
-                                                cls.flavor_ref)
-        cls.s3_name = rand_name('server')
-        resp, cls.s3 = cls.client.create_server(cls.s3_name, cls.image_ref,
-                                                cls.flavor_ref_alt)
+        cls.s1_name = rand_name(cls.__name__ + '-instance')
+        resp, cls.s1 = cls.create_server(name=cls.s1_name,
+                                         image_id=cls.image_ref,
+                                         flavor=cls.flavor_ref,
+                                         wait_until='ACTIVE')
 
-        cls.client.wait_for_server_status(cls.s1['id'], 'ACTIVE')
-        resp, cls.s1 = cls.client.get_server(cls.s1['id'])
-        cls.client.wait_for_server_status(cls.s2['id'], 'ACTIVE')
-        resp, cls.s2 = cls.client.get_server(cls.s2['id'])
-        cls.client.wait_for_server_status(cls.s3['id'], 'ACTIVE')
-        resp, cls.s3 = cls.client.get_server(cls.s3['id'])
+        cls.s2_name = rand_name(cls.__name__ + '-instance')
+        resp, cls.s2 = cls.create_server(name=cls.s2_name,
+                                         image_id=cls.image_ref_alt,
+                                         flavor=cls.flavor_ref,
+                                         wait_until='ACTIVE')
+
+        cls.s3_name = rand_name(cls.__name__ + '-instance')
+        resp, cls.s3 = cls.create_server(name=cls.s3_name,
+                                         image_id=cls.image_ref,
+                                         flavor=cls.flavor_ref_alt,
+                                         wait_until='ACTIVE')
 
         cls.fixed_network_name = cls.config.compute.fixed_network_name
 
-    @classmethod
-    def tearDownClass(cls):
-        cls.client.delete_server(cls.s1['id'])
-        cls.client.delete_server(cls.s2['id'])
-        cls.client.delete_server(cls.s3['id'])
-        super(ListServerFiltersTestJSON, cls).tearDownClass()
-
     @utils.skip_unless_attr('multiple_images', 'Only one image found')
     @attr(type='gate')
     def test_list_servers_filter_by_image(self):
@@ -184,8 +178,8 @@
 
     @attr(type='gate')
     def test_list_servers_filtered_by_name_wildcard(self):
-        # List all servers that contains 'server' in name
-        params = {'name': 'server'}
+        # List all servers that contains '-instance' in name
+        params = {'name': '-instance'}
         resp, body = self.client.list_servers(params)
         servers = body['servers']
 
@@ -209,6 +203,7 @@
     def test_list_servers_filtered_by_ip(self):
         # Filter servers by ip
         # Here should be listed 1 server
+        resp, self.s1 = self.client.get_server(self.s1['id'])
         ip = self.s1['addresses'][self.fixed_network_name][0]['addr']
         params = {'ip': ip}
         resp, body = self.client.list_servers(params)
@@ -225,6 +220,7 @@
         # Filter servers by regex ip
         # List all servers filtered by part of ip address.
         # Here should be listed all servers
+        resp, self.s1 = self.client.get_server(self.s1['id'])
         ip = self.s1['addresses'][self.fixed_network_name][0]['addr'][0:-3]
         params = {'ip': ip}
         resp, body = self.client.list_servers(params)
diff --git a/tempest/api/volume/test_volumes_actions.py b/tempest/api/volume/test_volumes_actions.py
index 19e3fc6..09131e2 100644
--- a/tempest/api/volume/test_volumes_actions.py
+++ b/tempest/api/volume/test_volumes_actions.py
@@ -32,8 +32,8 @@
         cls.image_client = cls.os.image_client
 
         # Create a test shared instance and volume for attach/detach tests
-        srv_name = rand_name('Instance-')
-        vol_name = rand_name('Volume-')
+        srv_name = rand_name(cls.__name__ + '-Instance-')
+        vol_name = rand_name(cls.__name__ + '-Volume-')
         resp, cls.server = cls.servers_client.create_server(srv_name,
                                                             cls.image_ref,
                                                             cls.flavor_ref)
diff --git a/tempest/stress/driver.py b/tempest/stress/driver.py
index 55404ce..b5cab68 100644
--- a/tempest/stress/driver.py
+++ b/tempest/stress/driver.py
@@ -196,7 +196,7 @@
 
         if not logfiles:
             continue
-        if _has_error_in_logs(logfiles, computes):
+        if _has_error_in_logs(logfiles, computes, stop_on_error):
             had_errors = True
             break
 
diff --git a/tempest/stress/run_stress.py b/tempest/stress/run_stress.py
index 886d94b..e5cc281 100755
--- a/tempest/stress/run_stress.py
+++ b/tempest/stress/run_stress.py
@@ -23,14 +23,20 @@
 from testtools.testsuite import iterate_tests
 from unittest import loader
 
+from tempest.openstack.common import log as logging
+
+LOG = logging.getLogger(__name__)
+
 
 def discover_stress_tests(path="./", filter_attr=None, call_inherited=False):
     """Discovers all tempest tests and create action out of them
     """
+    LOG.info("Start test discovery")
     tests = []
     testloader = loader.TestLoader()
     list = testloader.discover(path)
     for func in (iterate_tests(list)):
+        attrs = []
         try:
             method_name = getattr(func, '_testMethodName')
             full_name = "%s.%s.%s" % (func.__module__,
@@ -106,4 +112,8 @@
                    help="Name of the file with test description")
 
 if __name__ == "__main__":
-    sys.exit(main(parser.parse_args()))
+    try:
+        sys.exit(main(parser.parse_args()))
+    except Exception:
+        LOG.exception("Failure in the stress test framework")
+        sys.exit(1)