diff --git a/tempest/api/network/test_fwaas_extensions.py b/tempest/api/network/test_fwaas_extensions.py
index 0622e87..651b4ab 100644
--- a/tempest/api/network/test_fwaas_extensions.py
+++ b/tempest/api/network/test_fwaas_extensions.py
@@ -99,8 +99,13 @@
 
         if not test.call_until_true(_wait, CONF.network.build_timeout,
                                     CONF.network.build_interval):
-            m = ("Timed out waiting for firewall %s to reach %s state(s)" %
-                 (fw_id, target_states))
+            status = self.client.show_firewall(fw_id)['firewall']['status']
+            m = ("Timed out waiting for firewall %s to reach %s state(s) "
+                 "after %ss, currently in %s state." %
+                 (fw_id,
+                  target_states,
+                  CONF.network.build_interval,
+                  status))
             raise exceptions.TimeoutException(m)
 
     @test.idempotent_id('1b84cf01-9c09-4ce7-bc72-b15e39076468')
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index 5e3e374..7a96f34 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -393,7 +393,9 @@
                                       " in filtered list (%s)." % nonexternal)
         self.assertIn(CONF.network.public_network_id, networks)
 
-        subnets_iter = (network['subnets'] for network in body['networks'])
+        subnets_iter = (network['subnets']
+                        for network in body['networks']
+                        if not network['shared'])
         # subnets_iter is a list (iterator) of lists. This flattens it to a
         # list of UUIDs
         public_subnets_iter = itertools.chain(*subnets_iter)
diff --git a/tempest/api/volume/test_snapshot_metadata.py b/tempest/api/volume/test_snapshot_metadata.py
index b8e87f0..641317a 100644
--- a/tempest/api/volume/test_snapshot_metadata.py
+++ b/tempest/api/volume/test_snapshot_metadata.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from testtools import matchers
+
 from tempest.api.volume import base
 from tempest import test
 
@@ -50,12 +52,14 @@
                                                     metadata)
         # Get the metadata of the snapshot
         body = self.client.show_snapshot_metadata(self.snapshot_id)
-        self.assertEqual(metadata, body)
+        self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
+
         # Delete one item metadata of the snapshot
         self.client.delete_snapshot_metadata_item(
             self.snapshot_id, "key1")
         body = self.client.show_snapshot_metadata(self.snapshot_id)
-        self.assertEqual(expected, body)
+        self.assertThat(body.items(), matchers.ContainsAll(expected.items()))
+        self.assertNotIn("key1", body)
 
     @test.idempotent_id('bd2363bc-de92-48a4-bc98-28943c6e4be1')
     def test_update_snapshot_metadata(self):
@@ -70,7 +74,8 @@
                                                     metadata)
         # Get the metadata of the snapshot
         body = self.client.show_snapshot_metadata(self.snapshot_id)
-        self.assertEqual(metadata, body)
+        self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
+
         # Update metadata item
         body = self.client.update_snapshot_metadata(
             self.snapshot_id, update)
@@ -93,13 +98,13 @@
                                                     metadata)
         # Get the metadata of the snapshot
         body = self.client.show_snapshot_metadata(self.snapshot_id)
-        self.assertEqual(metadata, body)
+        self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
         # Update metadata item
         body = self.client.update_snapshot_metadata_item(
             self.snapshot_id, "key3", update_item)
         # Get the metadata of the snapshot
         body = self.client.show_snapshot_metadata(self.snapshot_id)
-        self.assertEqual(expect, body)
+        self.assertThat(body.items(), matchers.ContainsAll(expect.items()))
 
 
 class SnapshotV1MetadataTestJSON(SnapshotV2MetadataTestJSON):
diff --git a/tempest/api/volume/test_volume_metadata.py b/tempest/api/volume/test_volume_metadata.py
index e89ff9a..8529cfc 100644
--- a/tempest/api/volume/test_volume_metadata.py
+++ b/tempest/api/volume/test_volume_metadata.py
@@ -75,7 +75,7 @@
             self.volume_id, update)
         # Get the metadata of the volume
         body = self.volumes_client.show_volume_metadata(self.volume_id)
-        self.assertThat(body.items(), matchers.ContainsAll(update.items()))
+        self.assertEqual(update, body)
 
     @test.idempotent_id('862261c5-8df4-475a-8c21-946e50e36a20')
     def test_update_volume_metadata_item(self):
diff --git a/tempest/scenario/test_large_ops.py b/tempest/scenario/test_large_ops.py
index 0789c21..56d4c7d 100644
--- a/tempest/scenario/test_large_ops.py
+++ b/tempest/scenario/test_large_ops.py
@@ -17,6 +17,7 @@
 from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 
+from tempest.common import fixed_network
 from tempest import config
 from tempest.scenario import manager
 from tempest import test
@@ -87,13 +88,18 @@
             'secgroup-%s' % name, 'secgroup-desc-%s' % name)
         self.addCleanupClass(self.security_groups_client.delete_security_group,
                              secgroup['id'])
-
+        create_kwargs = {
+            'min_count': CONF.scenario.large_ops_number,
+            'security_groups': [{'name': secgroup['name']}]
+            }
+        network = self.get_tenant_network()
+        create_kwargs = fixed_network.set_networks_kwarg(network,
+                                                         create_kwargs)
         self.servers_client.create_server(
             name,
             self.image,
             flavor_id,
-            min_count=CONF.scenario.large_ops_number,
-            security_groups=[{'name': secgroup['name']}])
+            **create_kwargs)
         # needed because of bug 1199788
         params = {'name': name}
         server_list = self.servers_client.list_servers(params)