diff --git a/cinder_tempest_plugin/scenario/manager.py b/cinder_tempest_plugin/scenario/manager.py
index 70c25ae..3b25bb1 100644
--- a/cinder_tempest_plugin/scenario/manager.py
+++ b/cinder_tempest_plugin/scenario/manager.py
@@ -1,6 +1,4 @@
-# TODO: Remove this file when tempest scenario manager becomes stable
-# Copyright 2012 OpenStack Foundation
-# Copyright 2013 IBM Corp.
+# Copyright 2021 Red Hat, Inc.
 # All Rights Reserved.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
@@ -15,372 +13,134 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import netaddr
 from oslo_log import log
-from oslo_serialization import jsonutils as json
-from oslo_utils import netutils
 
-from tempest.common import compute
-from tempest.common import image as common_image
-from tempest.common.utils.linux import remote_client
 from tempest.common import waiters
 from tempest import config
-from tempest import exceptions
-from tempest.lib.common import api_microversion_fixture
-from tempest.lib.common import api_version_utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import exceptions as lib_exc
-import tempest.test
+
+from tempest.scenario import manager
 
 CONF = config.CONF
 
 LOG = log.getLogger(__name__)
 
-LATEST_MICROVERSION = 'latest'
 
+class ScenarioTest(manager.ScenarioTest):
 
-class ScenarioTest(tempest.test.BaseTestCase):
-    """Base class for scenario tests. Uses tempest own clients. """
-
-    credentials = ['primary']
-
-    compute_min_microversion = None
-    compute_max_microversion = LATEST_MICROVERSION
-    volume_min_microversion = None
-    volume_max_microversion = LATEST_MICROVERSION
-    placement_min_microversion = None
-    placement_max_microversion = LATEST_MICROVERSION
-
-    @classmethod
-    def skip_checks(cls):
-        super(ScenarioTest, cls).skip_checks()
-        api_version_utils.check_skip_with_microversion(
-            cls.compute_min_microversion, cls.compute_max_microversion,
-            CONF.compute.min_microversion, CONF.compute.max_microversion)
-        api_version_utils.check_skip_with_microversion(
-            cls.volume_min_microversion, cls.volume_max_microversion,
-            CONF.volume.min_microversion, CONF.volume.max_microversion)
-        api_version_utils.check_skip_with_microversion(
-            cls.placement_min_microversion, cls.placement_max_microversion,
-            CONF.placement.min_microversion, CONF.placement.max_microversion)
-
-    @classmethod
-    def resource_setup(cls):
-        super(ScenarioTest, cls).resource_setup()
-        cls.compute_request_microversion = (
-            api_version_utils.select_request_microversion(
-                cls.compute_min_microversion,
-                CONF.compute.min_microversion))
-        cls.volume_request_microversion = (
-            api_version_utils.select_request_microversion(
-                cls.volume_min_microversion,
-                CONF.volume.min_microversion))
-        cls.placement_request_microversion = (
-            api_version_utils.select_request_microversion(
-                cls.placement_min_microversion,
-                CONF.placement.min_microversion))
-
-    def setUp(self):
-        super(ScenarioTest, self).setUp()
-        self.useFixture(api_microversion_fixture.APIMicroversionFixture(
-            compute_microversion=self.compute_request_microversion,
-            volume_microversion=self.volume_request_microversion,
-            placement_microversion=self.placement_request_microversion))
+    credentials = ['primary', 'admin']
 
     @classmethod
     def setup_clients(cls):
         super(ScenarioTest, cls).setup_clients()
-        # Clients (in alphabetical order)
-        cls.flavors_client = cls.os_primary.flavors_client
-        cls.compute_floating_ips_client = (
-            cls.os_primary.compute_floating_ips_client)
-        if CONF.service_available.glance:
-            # Check if glance v1 is available to determine which client to use.
-            if CONF.image_feature_enabled.api_v1:
-                cls.image_client = cls.os_primary.image_client
-            elif CONF.image_feature_enabled.api_v2:
-                cls.image_client = cls.os_primary.image_client_v2
-            else:
-                raise lib_exc.InvalidConfiguration(
-                    'Either api_v1 or api_v2 must be True in '
-                    '[image-feature-enabled].')
-        # Compute image client
-        cls.compute_images_client = cls.os_primary.compute_images_client
-        cls.keypairs_client = cls.os_primary.keypairs_client
-        # Nova security groups client
-        cls.compute_security_groups_client = (
-            cls.os_primary.compute_security_groups_client)
-        cls.compute_security_group_rules_client = (
-            cls.os_primary.compute_security_group_rules_client)
-        cls.servers_client = cls.os_primary.servers_client
-        cls.interface_client = cls.os_primary.interfaces_client
-        # Neutron network client
-        cls.networks_client = cls.os_primary.networks_client
-        cls.ports_client = cls.os_primary.ports_client
-        cls.routers_client = cls.os_primary.routers_client
-        cls.subnets_client = cls.os_primary.subnets_client
-        cls.floating_ips_client = cls.os_primary.floating_ips_client
-        cls.security_groups_client = cls.os_primary.security_groups_client
-        cls.security_group_rules_client = (
-            cls.os_primary.security_group_rules_client)
-        # Use the latest available volume clients
-        if CONF.service_available.cinder:
-            cls.volumes_client = cls.os_primary.volumes_client_latest
-            cls.snapshots_client = cls.os_primary.snapshots_client_latest
-            cls.backups_client = cls.os_primary.backups_client_latest
+        cls.admin_volume_types_client = cls.os_admin.volume_types_client_latest
 
-    # ## Test functions library
-    #
-    # The create_[resource] functions only return body and discard the
-    # resp part which is not used in scenario tests
+    def _attached_volume_name(
+            self, disks_list_before_attach, ip_address, private_key):
+        ssh = self.get_remote_client(ip_address, private_key=private_key)
 
-    def create_keypair(self, client=None):
-        if not client:
-            client = self.keypairs_client
-        name = data_utils.rand_name(self.__class__.__name__)
-        # We don't need to create a keypair by pubkey in scenario
-        body = client.create_keypair(name=name)
-        self.addCleanup(client.delete_keypair, name)
-        return body['keypair']
+        def _wait_for_volume_available_on_system():
+            disks_list_after_attach = ssh.list_disks()
+            return len(disks_list_after_attach) > len(disks_list_before_attach)
 
-    def create_server(self, name=None, image_id=None, flavor=None,
-                      validatable=False, wait_until='ACTIVE',
-                      clients=None, **kwargs):
-        """Wrapper utility that returns a test server.
+        if not test_utils.call_until_true(_wait_for_volume_available_on_system,
+                                          CONF.compute.build_timeout,
+                                          CONF.compute.build_interval):
+            raise lib_exc.TimeoutException
 
-        This wrapper utility calls the common create test server and
-        returns a test server. The purpose of this wrapper is to minimize
-        the impact on the code of the tests already using this
-        function.
+        disks_list_after_attach = ssh.list_disks()
+        volume_name = [item for item in disks_list_after_attach
+                       if item not in disks_list_before_attach][0]
+        return volume_name
 
-        :param **kwargs:
-            See extra parameters below
+    def _get_file_md5(self, ip_address, filename, dev_name=None,
+                      mount_path='/mnt', private_key=None, server=None):
 
-        :Keyword Arguments:
-            * *vnic_type* (``string``) --
-              used when launching instances with pre-configured ports.
-              Examples:
-                normal: a traditional virtual port that is either attached
-                        to a linux bridge or an openvswitch bridge on a
-                        compute node.
-                direct: an SR-IOV port that is directly attached to a VM
-                macvtap: an SR-IOV port that is attached to a VM via a macvtap
-                         device.
-              Defaults to ``CONF.network.port_vnic_type``.
-            * *port_profile* (``dict``) --
-              This attribute is a dictionary that can be used (with admin
-              credentials) to supply information influencing the binding of
-              the port.
-              example: port_profile = "capabilities:[switchdev]"
-              Defaults to ``CONF.network.port_profile``.
-        """
+        ssh_client = self.get_remote_client(ip_address,
+                                            private_key=private_key,
+                                            server=server)
+        if dev_name is not None:
+            ssh_client.exec_command('sudo mount /dev/%s %s' % (dev_name,
+                                                               mount_path))
 
-        # NOTE(jlanoux): As a first step, ssh checks in the scenario
-        # tests need to be run regardless of the run_validation and
-        # validatable parameters and thus until the ssh validation job
-        # becomes voting in CI. The test resources management and IP
-        # association are taken care of in the scenario tests.
-        # Therefore, the validatable parameter is set to false in all
-        # those tests. In this way create_server just return a standard
-        # server and the scenario tests always perform ssh checks.
+        md5_sum = ssh_client.exec_command(
+            'sudo md5sum %s/%s|cut -c 1-32' % (mount_path, filename))
+        if dev_name is not None:
+            ssh_client.exec_command('sudo umount %s' % mount_path)
+        return md5_sum
 
-        # Needed for the cross_tenant_traffic test:
-        if clients is None:
-            clients = self.os_primary
+    def _count_files(self, ip_address, dev_name=None, mount_path='/mnt',
+                     private_key=None, server=None):
+        ssh_client = self.get_remote_client(ip_address,
+                                            private_key=private_key,
+                                            server=server)
+        if dev_name is not None:
+            ssh_client.exec_command('sudo mount /dev/%s %s' % (dev_name,
+                                                               mount_path))
+        count = ssh_client.exec_command('sudo ls -l %s | wc -l' % mount_path)
+        if dev_name is not None:
+            ssh_client.exec_command('sudo umount %s' % mount_path)
+        # We subtract 2 from the count since `wc -l` also includes the count
+        # of new line character and while creating the filesystem, a
+        # lost+found folder is also created
+        return int(count) - 2
 
-        if name is None:
-            name = data_utils.rand_name(self.__class__.__name__ + "-server")
+    def _make_fs(self, ip_address, private_key, server, dev_name, fs='ext4'):
+        ssh_client = self.get_remote_client(ip_address,
+                                            private_key=private_key,
+                                            server=server)
 
-        vnic_type = kwargs.pop('vnic_type', CONF.network.port_vnic_type)
-        profile = kwargs.pop('port_profile', CONF.network.port_profile)
+        ssh_client.make_fs(dev_name, fs=fs)
 
-        # If vnic_type or profile are configured create port for
-        # every network
-        if vnic_type or profile:
-            ports = []
-            create_port_body = {}
+    def create_md5_new_file(self, ip_address, filename, dev_name=None,
+                            mount_path='/mnt', private_key=None, server=None):
+        ssh_client = self.get_remote_client(ip_address,
+                                            private_key=private_key,
+                                            server=server)
 
-            if vnic_type:
-                create_port_body['binding:vnic_type'] = vnic_type
+        if dev_name is not None:
+            ssh_client.exec_command('sudo mount /dev/%s %s' % (dev_name,
+                                                               mount_path))
+        ssh_client.exec_command(
+            'sudo dd bs=1024 count=100 if=/dev/urandom of=/%s/%s' %
+            (mount_path, filename))
+        md5 = ssh_client.exec_command(
+            'sudo md5sum -b %s/%s|cut -c 1-32' % (mount_path, filename))
+        ssh_client.exec_command('sudo sync')
+        if dev_name is not None:
+            ssh_client.exec_command('sudo umount %s' % mount_path)
+        return md5
 
-            if profile:
-                create_port_body['binding:profile'] = profile
+    def get_md5_from_file(self, instance, instance_ip, filename,
+                          dev_name=None):
 
-            if kwargs:
-                # Convert security group names to security group ids
-                # to pass to create_port
-                if 'security_groups' in kwargs:
-                    security_groups = \
-                        clients.security_groups_client.list_security_groups(
-                        ).get('security_groups')
-                    sec_dict = dict([(s['name'], s['id'])
-                                     for s in security_groups])
+        md5_sum = self._get_file_md5(instance_ip, filename=filename,
+                                     dev_name=dev_name,
+                                     private_key=self.keypair['private_key'],
+                                     server=instance)
+        count = self._count_files(instance_ip, dev_name=dev_name,
+                                  private_key=self.keypair['private_key'],
+                                  server=instance)
+        return count, md5_sum
 
-                    sec_groups_names = [s['name'] for s in kwargs.pop(
-                        'security_groups')]
-                    security_groups_ids = [sec_dict[s]
-                                           for s in sec_groups_names]
+    def _attach_and_get_volume_device_name(self, server, volume, instance_ip,
+                                           private_key):
+        ssh_client = self.get_remote_client(
+            instance_ip, private_key=private_key,
+            server=server)
+        # List disks before volume attachment
+        disks_list_before_attach = ssh_client.list_disks()
+        # Attach volume
+        attachment = self.attach_volume(server, volume)
+        # Find the difference between disks before and after attachment that
+        # gives us the volume device name
+        volume_device_name = self._attached_volume_name(
+            disks_list_before_attach, instance_ip, private_key)
+        return volume_device_name, attachment
 
-                    if security_groups_ids:
-                        create_port_body[
-                            'security_groups'] = security_groups_ids
-                networks = kwargs.pop('networks', [])
-            else:
-                networks = []
-
-            # If there are no networks passed to us we look up
-            # for the project's private networks and create a port.
-            # The same behaviour as we would expect when passing
-            # the call to the clients with no networks
-            if not networks:
-                networks = clients.networks_client.list_networks(
-                    **{'router:external': False, 'fields': 'id'})['networks']
-
-            # It's net['uuid'] if networks come from kwargs
-            # and net['id'] if they come from
-            # clients.networks_client.list_networks
-            for net in networks:
-                net_id = net.get('uuid', net.get('id'))
-                if 'port' not in net:
-                    port = self.create_port(network_id=net_id,
-                                            client=clients.ports_client,
-                                            **create_port_body)
-                    ports.append({'port': port['id']})
-                else:
-                    ports.append({'port': net['port']})
-            if ports:
-                kwargs['networks'] = ports
-            self.ports = ports
-
-        tenant_network = self.get_tenant_network()
-
-        if CONF.compute.compute_volume_common_az:
-            kwargs.setdefault('availability_zone',
-                              CONF.compute.compute_volume_common_az)
-
-        body, _ = compute.create_test_server(
-            clients,
-            tenant_network=tenant_network,
-            wait_until=wait_until,
-            name=name, flavor=flavor,
-            image_id=image_id, **kwargs)
-
-        self.addCleanup(waiters.wait_for_server_termination,
-                        clients.servers_client, body['id'])
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        clients.servers_client.delete_server, body['id'])
-        server = clients.servers_client.show_server(body['id'])['server']
-        return server
-
-    def create_volume(self, size=None, name=None, snapshot_id=None,
-                      imageRef=None, volume_type=None):
-        if size is None:
-            size = CONF.volume.volume_size
-        if imageRef:
-            if CONF.image_feature_enabled.api_v1:
-                resp = self.image_client.check_image(imageRef)
-                image = common_image.get_image_meta_from_headers(resp)
-            else:
-                image = self.image_client.show_image(imageRef)
-            min_disk = image.get('min_disk')
-            size = max(size, min_disk)
-        if name is None:
-            name = data_utils.rand_name(self.__class__.__name__ + "-volume")
-        kwargs = {'display_name': name,
-                  'snapshot_id': snapshot_id,
-                  'imageRef': imageRef,
-                  'volume_type': volume_type,
-                  'size': size}
-
-        if CONF.compute.compute_volume_common_az:
-            kwargs.setdefault('availability_zone',
-                              CONF.compute.compute_volume_common_az)
-
-        volume = self.volumes_client.create_volume(**kwargs)['volume']
-
-        self.addCleanup(self.volumes_client.wait_for_resource_deletion,
-                        volume['id'])
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        self.volumes_client.delete_volume, volume['id'])
-        self.assertEqual(name, volume['name'])
-        waiters.wait_for_volume_resource_status(self.volumes_client,
-                                                volume['id'], 'available')
-        # The volume retrieved on creation has a non-up-to-date status.
-        # Retrieval after it becomes active ensures correct details.
-        volume = self.volumes_client.show_volume(volume['id'])['volume']
-        return volume
-
-    def create_backup(self, volume_id, name=None, description=None,
-                      force=False, snapshot_id=None, incremental=False,
-                      container=None):
-
-        name = name or data_utils.rand_name(
-            self.__class__.__name__ + "-backup")
-        kwargs = {'name': name,
-                  'description': description,
-                  'force': force,
-                  'snapshot_id': snapshot_id,
-                  'incremental': incremental,
-                  'container': container}
-        backup = self.backups_client.create_backup(volume_id=volume_id,
-                                                   **kwargs)['backup']
-        self.addCleanup(self.backups_client.delete_backup, backup['id'])
-        waiters.wait_for_volume_resource_status(self.backups_client,
-                                                backup['id'], 'available')
-        return backup
-
-    def restore_backup(self, backup_id):
-        restore = self.backups_client.restore_backup(backup_id)['restore']
-        self.addCleanup(self.volumes_client.delete_volume,
-                        restore['volume_id'])
-        waiters.wait_for_volume_resource_status(self.backups_client,
-                                                backup_id, 'available')
-        waiters.wait_for_volume_resource_status(self.volumes_client,
-                                                restore['volume_id'],
-                                                'available')
-        self.assertEqual(backup_id, restore['backup_id'])
-        return restore
-
-    def create_volume_snapshot(self, volume_id, name=None, description=None,
-                               metadata=None, force=False):
-        name = name or data_utils.rand_name(
-            self.__class__.__name__ + '-snapshot')
-        snapshot = self.snapshots_client.create_snapshot(
-            volume_id=volume_id,
-            force=force,
-            display_name=name,
-            description=description,
-            metadata=metadata)['snapshot']
-        self.addCleanup(self.snapshots_client.wait_for_resource_deletion,
-                        snapshot['id'])
-        self.addCleanup(self.snapshots_client.delete_snapshot, snapshot['id'])
-        waiters.wait_for_volume_resource_status(self.snapshots_client,
-                                                snapshot['id'], 'available')
-        snapshot = self.snapshots_client.show_snapshot(
-            snapshot['id'])['snapshot']
-        return snapshot
-
-    def _cleanup_volume_type(self, volume_type):
-        """Clean up a given volume type.
-
-        Ensuring all volumes associated to a type are first removed before
-        attempting to remove the type itself. This includes any image volume
-        cache volumes stored in a separate tenant to the original volumes
-        created from the type.
-        """
-        admin_volume_type_client = self.os_admin.volume_types_client_latest
-        admin_volumes_client = self.os_admin.volumes_client_latest
-        volumes = admin_volumes_client.list_volumes(
-            detail=True, params={'all_tenants': 1})['volumes']
-        type_name = volume_type['name']
-        for volume in [v for v in volumes if v['volume_type'] == type_name]:
-            test_utils.call_and_ignore_notfound_exc(
-                admin_volumes_client.delete_volume, volume['id'])
-            admin_volumes_client.wait_for_resource_deletion(volume['id'])
-        admin_volume_type_client.delete_volume_type(volume_type['id'])
-
-    def create_volume_type(self, client=None, name=None, backend_name=None):
+    def create_volume_type(self, client=None, name=None, extra_specs=None):
         if not client:
             client = self.os_admin.volume_types_client_latest
         if not name:
@@ -388,719 +148,67 @@
             name = data_utils.rand_name(class_name + '-volume-type')
         randomized_name = data_utils.rand_name('scenario-type-' + name)
 
-        LOG.debug("Creating a volume type: %s on backend %s",
-                  randomized_name, backend_name)
-        extra_specs = {}
-        if backend_name:
-            extra_specs = {"volume_backend_name": backend_name}
-
-        volume_type = client.create_volume_type(
+        LOG.debug("Creating a volume type: %s with extra_specs %s",
+                  randomized_name, extra_specs)
+        if extra_specs is None:
+            extra_specs = {}
+        volume_type = self.admin_volume_types_client.create_volume_type(
             name=randomized_name, extra_specs=extra_specs)['volume_type']
-        self.addCleanup(self._cleanup_volume_type, volume_type)
+        self.addCleanup(self.cleanup_volume_type, volume_type)
         return volume_type
 
-    def _create_loginable_secgroup_rule(self, secgroup_id=None):
-        _client = self.compute_security_groups_client
-        _client_rules = self.compute_security_group_rules_client
-        if secgroup_id is None:
-            sgs = _client.list_security_groups()['security_groups']
-            for sg in sgs:
-                if sg['name'] == 'default':
-                    secgroup_id = sg['id']
+    def attach_volume(self, server, volume, device=None, tag=None):
+        """Attaches volume to server and waits for 'in-use' volume status.
 
-        # These rules are intended to permit inbound ssh and icmp
-        # traffic from all sources, so no group_id is provided.
-        # Setting a group_id would only permit traffic from ports
-        # belonging to the same security group.
-        rulesets = [
-            {
-                # ssh
-                'ip_protocol': 'tcp',
-                'from_port': 22,
-                'to_port': 22,
-                'cidr': '0.0.0.0/0',
-            },
-            {
-                # ping
-                'ip_protocol': 'icmp',
-                'from_port': -1,
-                'to_port': -1,
-                'cidr': '0.0.0.0/0',
-            }
-        ]
-        rules = list()
-        for ruleset in rulesets:
-            sg_rule = _client_rules.create_security_group_rule(
-                parent_group_id=secgroup_id, **ruleset)['security_group_rule']
-            rules.append(sg_rule)
-        return rules
+        The volume will be detached when the test tears down.
 
-    def _create_security_group(self):
-        # Create security group
-        sg_name = data_utils.rand_name(self.__class__.__name__)
-        sg_desc = sg_name + " description"
-        secgroup = self.compute_security_groups_client.create_security_group(
-            name=sg_name, description=sg_desc)['security_group']
-        self.assertEqual(secgroup['name'], sg_name)
-        self.assertEqual(secgroup['description'], sg_desc)
-        self.addCleanup(
-            test_utils.call_and_ignore_notfound_exc,
-            self.compute_security_groups_client.delete_security_group,
-            secgroup['id'])
-
-        # Add rules to the security group
-        self._create_loginable_secgroup_rule(secgroup['id'])
-
-        return secgroup
-
-    def get_remote_client(self, ip_address, username=None, private_key=None,
-                          server=None):
-        """Get a SSH client to a remote server
-
-        :param ip_address: the server floating or fixed IP address to use
-                           for ssh validation
-        :param username: name of the Linux account on the remote server
-        :param private_key: the SSH private key to use
-        :param server: server dict, used for debugging purposes
-        :return: a RemoteClient object
+        :param server: The server to which the volume will be attached.
+        :param volume: The volume to attach.
+        :param device: Optional mountpoint for the attached volume. Note that
+            this is not guaranteed for all hypervisors and is not recommended.
+        :param tag: Optional device role tag to apply to the volume.
         """
+        attach_kwargs = dict(volumeId=volume['id'])
+        if device:
+            attach_kwargs['device'] = device
+        if tag:
+            attach_kwargs['tag'] = tag
 
-        if username is None:
-            username = CONF.validation.image_ssh_user
-        # Set this with 'keypair' or others to log in with keypair or
-        # username/password.
-        if CONF.validation.auth_method == 'keypair':
-            password = None
-            if private_key is None:
-                private_key = self.keypair['private_key']
+        attachment = self.servers_client.attach_volume(
+            server['id'], **attach_kwargs)['volumeAttachment']
+        # On teardown detach the volume and for multiattach volumes wait for
+        # the attachment to be removed. For non-multiattach volumes wait for
+        # the state of the volume to change to available. This is so we don't
+        # error out when trying to delete the volume during teardown.
+        if volume['multiattach']:
+            att = waiters.wait_for_volume_attachment_create(
+                self.volumes_client, volume['id'], server['id'])
+            self.addCleanup(waiters.wait_for_volume_attachment_remove,
+                            self.volumes_client, volume['id'],
+                            att['attachment_id'])
         else:
-            password = CONF.validation.image_ssh_password
-            private_key = None
-        linux_client = remote_client.RemoteClient(
-            ip_address, username, pkey=private_key, password=password,
-            server=server, servers_client=self.servers_client)
-        linux_client.validate_authentication()
-        return linux_client
+            self.addCleanup(waiters.wait_for_volume_resource_status,
+                            self.volumes_client, volume['id'], 'available')
+            waiters.wait_for_volume_resource_status(self.volumes_client,
+                                                    volume['id'], 'in-use')
+        # Ignore 404s on detach in case the server is deleted or the volume
+        # is already detached.
+        self.addCleanup(self._detach_volume, server, volume)
+        return attachment
 
-    def _log_net_info(self, exc):
-        # network debug is called as part of ssh init
-        if not isinstance(exc, lib_exc.SSHTimeout):
-            LOG.debug('Network information on a devstack host')
+    def _detach_volume(self, server, volume):
+        """Helper method to detach a volume.
 
-    def create_server_snapshot(self, server, name=None):
-        # Glance client
-        _image_client = self.image_client
-        # Compute client
-        _images_client = self.compute_images_client
-        if name is None:
-            name = data_utils.rand_name(self.__class__.__name__ + 'snapshot')
-        LOG.debug("Creating a snapshot image for server: %s", server['name'])
-        image = _images_client.create_image(server['id'], name=name)
-        image_id = image.response['location'].split('images/')[1]
-        waiters.wait_for_image_status(_image_client, image_id, 'active')
-
-        self.addCleanup(_image_client.wait_for_resource_deletion,
-                        image_id)
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        _image_client.delete_image, image_id)
-
-        if CONF.image_feature_enabled.api_v1:
-            # In glance v1 the additional properties are stored in the headers.
-            resp = _image_client.check_image(image_id)
-            snapshot_image = common_image.get_image_meta_from_headers(resp)
-            image_props = snapshot_image.get('properties', {})
-        else:
-            # In glance v2 the additional properties are flattened.
-            snapshot_image = _image_client.show_image(image_id)
-            image_props = snapshot_image
-
-        bdm = image_props.get('block_device_mapping')
-        if bdm:
-            bdm = json.loads(bdm)
-            if bdm and 'snapshot_id' in bdm[0]:
-                snapshot_id = bdm[0]['snapshot_id']
-                self.addCleanup(
-                    self.snapshots_client.wait_for_resource_deletion,
-                    snapshot_id)
-                self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                                self.snapshots_client.delete_snapshot,
-                                snapshot_id)
-                waiters.wait_for_volume_resource_status(self.snapshots_client,
-                                                        snapshot_id,
-                                                        'available')
-        image_name = snapshot_image['name']
-        self.assertEqual(name, image_name)
-        LOG.debug("Created snapshot image %s for server %s",
-                  image_name, server['name'])
-        return snapshot_image
-
-    def nova_volume_attach(self, server, volume_to_attach):
-        volume = self.servers_client.attach_volume(
-            server['id'], volumeId=volume_to_attach['id'], device='/dev/%s'
-            % CONF.compute.volume_device_name)['volumeAttachment']
-        self.assertEqual(volume_to_attach['id'], volume['id'])
-        waiters.wait_for_volume_resource_status(self.volumes_client,
-                                                volume['id'], 'in-use')
-
-        # Return the updated volume after the attachment
-        return self.volumes_client.show_volume(volume['id'])['volume']
-
-    def nova_volume_detach(self, server, volume):
-        self.servers_client.detach_volume(server['id'], volume['id'])
-        waiters.wait_for_volume_resource_status(self.volumes_client,
-                                                volume['id'], 'available')
-
-    def check_vm_connectivity(self, ip_address,
-                              username=None,
-                              private_key=None,
-                              should_connect=True,
-                              extra_msg="",
-                              server=None,
-                              mtu=None):
-        """Check server connectivity
-
-        :param ip_address: server to test against
-        :param username: server's ssh username
-        :param private_key: server's ssh private key to be used
-        :param should_connect: True/False indicates positive/negative test
-            positive - attempt ping and ssh
-            negative - attempt ping and fail if succeed
-        :param extra_msg: Message to help with debugging if ``ping_ip_address``
-            fails
-        :param server: The server whose console to log for debugging
-        :param mtu: network MTU to use for connectivity validation
-
-        :raises: AssertError if the result of the connectivity check does
-            not match the value of the should_connect param
+        Ignores 404 responses if the volume or server do not exist, or the
+        volume is already detached from the server.
         """
-        LOG.debug('checking network connections to IP %s with user: %s',
-                  ip_address, username)
-        if should_connect:
-            msg = "Timed out waiting for %s to become reachable" % ip_address
-        else:
-            msg = "ip address %s is reachable" % ip_address
-        if extra_msg:
-            msg = "%s\n%s" % (extra_msg, msg)
-        self.assertTrue(self.ping_ip_address(ip_address,
-                                             should_succeed=should_connect,
-                                             mtu=mtu, server=server),
-                        msg=msg)
-        if should_connect:
-            # no need to check ssh for negative connectivity
-            try:
-                self.get_remote_client(ip_address, username, private_key,
-                                       server=server)
-            except Exception:
-                if not extra_msg:
-                    extra_msg = 'Failed to ssh to %s' % ip_address
-                LOG.exception(extra_msg)
-                raise
-
-    def create_floating_ip(self, thing, pool_name=None):
-        """Create a floating IP and associates to a server on Nova"""
-
-        if not pool_name:
-            pool_name = CONF.network.floating_network_name
-        floating_ip = (self.compute_floating_ips_client.
-                       create_floating_ip(pool=pool_name)['floating_ip'])
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        self.compute_floating_ips_client.delete_floating_ip,
-                        floating_ip['id'])
-        self.compute_floating_ips_client.associate_floating_ip_to_server(
-            floating_ip['ip'], thing['id'])
-        return floating_ip
-
-    def create_timestamp(self, ip_address, dev_name=None, mount_path='/mnt',
-                         private_key=None, server=None):
-        ssh_client = self.get_remote_client(ip_address,
-                                            private_key=private_key,
-                                            server=server)
-        if dev_name is not None:
-            ssh_client.make_fs(dev_name)
-            ssh_client.exec_command('sudo mount /dev/%s %s' % (dev_name,
-                                                               mount_path))
-        cmd_timestamp = 'sudo sh -c "date > %s/timestamp; sync"' % mount_path
-        ssh_client.exec_command(cmd_timestamp)
-        timestamp = ssh_client.exec_command('sudo cat %s/timestamp'
-                                            % mount_path)
-        if dev_name is not None:
-            ssh_client.exec_command('sudo umount %s' % mount_path)
-        return timestamp
-
-    def get_timestamp(self, ip_address, dev_name=None, mount_path='/mnt',
-                      private_key=None, server=None):
-        ssh_client = self.get_remote_client(ip_address,
-                                            private_key=private_key,
-                                            server=server)
-        if dev_name is not None:
-            ssh_client.mount(dev_name, mount_path)
-        timestamp = ssh_client.exec_command('sudo cat %s/timestamp'
-                                            % mount_path)
-        if dev_name is not None:
-            ssh_client.exec_command('sudo umount %s' % mount_path)
-        return timestamp
-
-    def get_server_ip(self, server):
-        """Get the server fixed or floating IP.
-
-        Based on the configuration we're in, return a correct ip
-        address for validating that a guest is up.
-        """
-        if CONF.validation.connect_method == 'floating':
-            # The tests calling this method don't have a floating IP
-            # and can't make use of the validation resources. So the
-            # method is creating the floating IP there.
-            return self.create_floating_ip(server)['ip']
-        elif CONF.validation.connect_method == 'fixed':
-            # Determine the network name to look for based on config or creds
-            # provider network resources.
-            if CONF.validation.network_for_ssh:
-                addresses = server['addresses'][
-                    CONF.validation.network_for_ssh]
-            else:
-                network = self.get_tenant_network()
-                addresses = (server['addresses'][network['name']]
-                             if network else [])
-            for address in addresses:
-                if (address['version'] == CONF.validation.ip_version_for_ssh and  # noqa
-                        address['OS-EXT-IPS:type'] == 'fixed'):
-                    return address['addr']
-            raise exceptions.ServerUnreachable(server_id=server['id'])
-        else:
-            raise lib_exc.InvalidConfiguration()
-
-    @classmethod
-    def get_host_for_server(cls, server_id):
-        server_details = cls.os_admin.servers_client.show_server(server_id)
-        return server_details['server']['OS-EXT-SRV-ATTR:host']
-
-    def _get_bdm(self, source_id, source_type, delete_on_termination=False):
-        bd_map_v2 = [{
-            'uuid': source_id,
-            'source_type': source_type,
-            'destination_type': 'volume',
-            'boot_index': 0,
-            'delete_on_termination': delete_on_termination}]
-        return {'block_device_mapping_v2': bd_map_v2}
-
-    def boot_instance_from_resource(self, source_id,
-                                    source_type,
-                                    keypair=None,
-                                    security_group=None,
-                                    delete_on_termination=False,
-                                    name=None):
-        create_kwargs = dict()
-        if keypair:
-            create_kwargs['key_name'] = keypair['name']
-        if security_group:
-            create_kwargs['security_groups'] = [
-                {'name': security_group['name']}]
-        create_kwargs.update(self._get_bdm(
-            source_id,
-            source_type,
-            delete_on_termination=delete_on_termination))
-        if name:
-            create_kwargs['name'] = name
-
-        return self.create_server(image_id='', **create_kwargs)
-
-    def create_volume_from_image(self):
-        img_uuid = CONF.compute.image_ref
-        vol_name = data_utils.rand_name(
-            self.__class__.__name__ + '-volume-origin')
-        return self.create_volume(name=vol_name, imageRef=img_uuid)
-
-
-class NetworkScenarioTest(ScenarioTest):
-    """Base class for network scenario tests.
-
-    This class provide helpers for network scenario tests, using the neutron
-    API. Helpers from ancestor which use the nova network API are overridden
-    with the neutron API.
-
-    This Class also enforces using Neutron instead of novanetwork.
-    Subclassed tests will be skipped if Neutron is not enabled
-
-    """
-
-    credentials = ['primary', 'admin']
-
-    @classmethod
-    def skip_checks(cls):
-        super(NetworkScenarioTest, cls).skip_checks()
-        if not CONF.service_available.neutron:
-            raise cls.skipException('Neutron not available')
-
-    def _create_network(self, networks_client=None,
-                        tenant_id=None,
-                        namestart='network-smoke-',
-                        port_security_enabled=True, **net_dict):
-        if not networks_client:
-            networks_client = self.networks_client
-        if not tenant_id:
-            tenant_id = networks_client.tenant_id
-        name = data_utils.rand_name(namestart)
-        network_kwargs = dict(name=name, tenant_id=tenant_id)
-        if net_dict:
-            network_kwargs.update(net_dict)
-        # Neutron disables port security by default so we have to check the
-        # config before trying to create the network with port_security_enabled
-        if CONF.network_feature_enabled.port_security:
-            network_kwargs['port_security_enabled'] = port_security_enabled
-        result = networks_client.create_network(**network_kwargs)
-        network = result['network']
-
-        self.assertEqual(network['name'], name)
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        networks_client.delete_network,
-                        network['id'])
-        return network
-
-    def create_subnet(self, network, subnets_client=None,
-                      namestart='subnet-smoke', **kwargs):
-        """Create a subnet for the given network
-
-        within the cidr block configured for tenant networks.
-        """
-        if not subnets_client:
-            subnets_client = self.subnets_client
-
-        def cidr_in_use(cidr, tenant_id):
-            """Check cidr existence
-
-            :returns: True if subnet with cidr already exist in tenant
-                  False else
-            """
-            cidr_in_use = self.os_admin.subnets_client.list_subnets(
-                tenant_id=tenant_id, cidr=cidr)['subnets']
-            return len(cidr_in_use) != 0
-
-        ip_version = kwargs.pop('ip_version', 4)
-
-        if ip_version == 6:
-            tenant_cidr = netaddr.IPNetwork(
-                CONF.network.project_network_v6_cidr)
-            num_bits = CONF.network.project_network_v6_mask_bits
-        else:
-            tenant_cidr = netaddr.IPNetwork(CONF.network.project_network_cidr)
-            num_bits = CONF.network.project_network_mask_bits
-
-        result = None
-        str_cidr = None
-        # Repeatedly attempt subnet creation with sequential cidr
-        # blocks until an unallocated block is found.
-        for subnet_cidr in tenant_cidr.subnet(num_bits):
-            str_cidr = str(subnet_cidr)
-            if cidr_in_use(str_cidr, tenant_id=network['tenant_id']):
-                continue
-
-            subnet = dict(
-                name=data_utils.rand_name(namestart),
-                network_id=network['id'],
-                tenant_id=network['tenant_id'],
-                cidr=str_cidr,
-                ip_version=ip_version,
-                **kwargs
-            )
-            try:
-                result = subnets_client.create_subnet(**subnet)
-                break
-            except lib_exc.Conflict as e:
-                is_overlapping_cidr = 'overlaps with another subnet' in str(e)
-                if not is_overlapping_cidr:
-                    raise
-        self.assertIsNotNone(result, 'Unable to allocate tenant network')
-
-        subnet = result['subnet']
-        self.assertEqual(subnet['cidr'], str_cidr)
-
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        subnets_client.delete_subnet, subnet['id'])
-
-        return subnet
-
-    def _get_server_port_id_and_ip4(self, server, ip_addr=None):
-        if ip_addr:
-            ports = self.os_admin.ports_client.list_ports(
-                device_id=server['id'],
-                fixed_ips='ip_address=%s' % ip_addr)['ports']
-        else:
-            ports = self.os_admin.ports_client.list_ports(
-                device_id=server['id'])['ports']
-        # A port can have more than one IP address in some cases.
-        # If the network is dual-stack (IPv4 + IPv6), this port is associated
-        # with 2 subnets
-        p_status = ['ACTIVE']
-        # NOTE(vsaienko) With Ironic, instances live on separate hardware
-        # servers. Neutron does not bind ports for Ironic instances, as a
-        # result the port remains in the DOWN state.
-        # TODO(vsaienko) remove once bug: #1599836 is resolved.
-        if getattr(CONF.service_available, 'ironic', False):
-            p_status.append('DOWN')
-        port_map = [(p["id"], fxip["ip_address"])
-                    for p in ports
-                    for fxip in p["fixed_ips"]
-                    if (netutils.is_valid_ipv4(fxip["ip_address"]) and
-                        p['status'] in p_status)]
-        inactive = [p for p in ports if p['status'] != 'ACTIVE']
-        if inactive:
-            LOG.warning("Instance has ports that are not ACTIVE: %s", inactive)
-
-        self.assertNotEmpty(port_map,
-                            "No IPv4 addresses found in: %s" % ports)
-        self.assertEqual(len(port_map), 1,
-                         "Found multiple IPv4 addresses: %s. "
-                         "Unable to determine which port to target."
-                         % port_map)
-        return port_map[0]
-
-    def _get_network_by_name(self, network_name):
-        net = self.os_admin.networks_client.list_networks(
-            name=network_name)['networks']
-        self.assertNotEmpty(net,
-                            "Unable to get network by name: %s" % network_name)
-        return net[0]
-
-    def create_floating_ip(self, thing, external_network_id=None,
-                           port_id=None, client=None):
-        """Create a floating IP and associates to a resource/port on Neutron"""
-        if not external_network_id:
-            external_network_id = CONF.network.public_network_id
-        if not client:
-            client = self.floating_ips_client
-        if not port_id:
-            port_id, ip4 = self._get_server_port_id_and_ip4(thing)
-        else:
-            ip4 = None
-        result = client.create_floatingip(
-            floating_network_id=external_network_id,
-            port_id=port_id,
-            tenant_id=thing['tenant_id'],
-            fixed_ip_address=ip4
-        )
-        floating_ip = result['floatingip']
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        client.delete_floatingip,
-                        floating_ip['id'])
-        return floating_ip
-
-    def check_floating_ip_status(self, floating_ip, status):
-        """Verifies floatingip reaches the given status
-
-        :param dict floating_ip: floating IP dict to check status
-        :param status: target status
-        :raises: AssertionError if status doesn't match
-        """
-        floatingip_id = floating_ip['id']
-
-        def refresh():
-            result = (self.floating_ips_client.
-                      show_floatingip(floatingip_id)['floatingip'])
-            return status == result['status']
-
-        if not test_utils.call_until_true(refresh,
-                                          CONF.network.build_timeout,
-                                          CONF.network.build_interval):
-            floating_ip = self.floating_ips_client.show_floatingip(
-                floatingip_id)['floatingip']
-            self.assertEqual(status, floating_ip['status'],
-                             message="FloatingIP: {fp} is at status: {cst}. "
-                                     "failed  to reach status: {st}"
-                             .format(fp=floating_ip, cst=floating_ip['status'],
-                                     st=status))
-        LOG.info("FloatingIP: {fp} is at status: {st}"
-                 .format(fp=floating_ip, st=status))
-
-    def _create_security_group(self, security_group_rules_client=None,
-                               tenant_id=None,
-                               namestart='secgroup-smoke',
-                               security_groups_client=None):
-        if security_group_rules_client is None:
-            security_group_rules_client = self.security_group_rules_client
-        if security_groups_client is None:
-            security_groups_client = self.security_groups_client
-        if tenant_id is None:
-            tenant_id = security_groups_client.tenant_id
-        secgroup = self._create_empty_security_group(
-            namestart=namestart, client=security_groups_client,
-            tenant_id=tenant_id)
-
-        # Add rules to the security group
-        rules = self._create_loginable_secgroup_rule(
-            security_group_rules_client=security_group_rules_client,
-            secgroup=secgroup,
-            security_groups_client=security_groups_client)
-        for rule in rules:
-            self.assertEqual(tenant_id, rule['tenant_id'])
-            self.assertEqual(secgroup['id'], rule['security_group_id'])
-        return secgroup
-
-    def _create_empty_security_group(self, client=None, tenant_id=None,
-                                     namestart='secgroup-smoke'):
-        """Create a security group without rules.
-
-        Default rules will be created:
-         - IPv4 egress to any
-         - IPv6 egress to any
-
-        :param tenant_id: secgroup will be created in this tenant
-        :returns: the created security group
-        """
-        if client is None:
-            client = self.security_groups_client
-        if not tenant_id:
-            tenant_id = client.tenant_id
-        sg_name = data_utils.rand_name(namestart)
-        sg_desc = sg_name + " description"
-        sg_dict = dict(name=sg_name,
-                       description=sg_desc)
-        sg_dict['tenant_id'] = tenant_id
-        result = client.create_security_group(**sg_dict)
-
-        secgroup = result['security_group']
-        self.assertEqual(secgroup['name'], sg_name)
-        self.assertEqual(tenant_id, secgroup['tenant_id'])
-        self.assertEqual(secgroup['description'], sg_desc)
-
-        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
-                        client.delete_security_group, secgroup['id'])
-        return secgroup
-
-    def _create_security_group_rule(self, secgroup=None,
-                                    sec_group_rules_client=None,
-                                    tenant_id=None,
-                                    security_groups_client=None, **kwargs):
-        """Create a rule from a dictionary of rule parameters.
-
-        Create a rule in a secgroup. if secgroup not defined will search for
-        default secgroup in tenant_id.
-
-        :param secgroup: the security group.
-        :param tenant_id: if secgroup not passed -- the tenant in which to
-            search for default secgroup
-        :param kwargs: a dictionary containing rule parameters:
-            for example, to allow incoming ssh:
-            rule = {
-                    direction: 'ingress'
-                    protocol:'tcp',
-                    port_range_min: 22,
-                    port_range_max: 22
-                    }
-        """
-        if sec_group_rules_client is None:
-            sec_group_rules_client = self.security_group_rules_client
-        if security_groups_client is None:
-            security_groups_client = self.security_groups_client
-        if not tenant_id:
-            tenant_id = security_groups_client.tenant_id
-        if secgroup is None:
-            # Get default secgroup for tenant_id
-            default_secgroups = security_groups_client.list_security_groups(
-                name='default', tenant_id=tenant_id)['security_groups']
-            msg = "No default security group for tenant %s." % (tenant_id)
-            self.assertNotEmpty(default_secgroups, msg)
-            secgroup = default_secgroups[0]
-
-        ruleset = dict(security_group_id=secgroup['id'],
-                       tenant_id=secgroup['tenant_id'])
-        ruleset.update(kwargs)
-
-        sg_rule = sec_group_rules_client.create_security_group_rule(**ruleset)
-        sg_rule = sg_rule['security_group_rule']
-
-        self.assertEqual(secgroup['tenant_id'], sg_rule['tenant_id'])
-        self.assertEqual(secgroup['id'], sg_rule['security_group_id'])
-
-        return sg_rule
-
-    def _create_loginable_secgroup_rule(self, security_group_rules_client=None,
-                                        secgroup=None,
-                                        security_groups_client=None):
-        """Create loginable security group rule
-
-        This function will create:
-        1. egress and ingress tcp port 22 allow rule in order to allow ssh
-        access for ipv4.
-        2. egress and ingress ipv6 icmp allow rule, in order to allow icmpv6.
-        3. egress and ingress ipv4 icmp allow rule, in order to allow icmpv4.
-        """
-
-        if security_group_rules_client is None:
-            security_group_rules_client = self.security_group_rules_client
-        if security_groups_client is None:
-            security_groups_client = self.security_groups_client
-        rules = []
-        rulesets = [
-            dict(
-                # ssh
-                protocol='tcp',
-                port_range_min=22,
-                port_range_max=22,
-            ),
-            dict(
-                # ping
-                protocol='icmp',
-            ),
-            dict(
-                # ipv6-icmp for ping6
-                protocol='icmp',
-                ethertype='IPv6',
-            )
-        ]
-        sec_group_rules_client = security_group_rules_client
-        for ruleset in rulesets:
-            for r_direction in ['ingress', 'egress']:
-                ruleset['direction'] = r_direction
-                try:
-                    sg_rule = self._create_security_group_rule(
-                        sec_group_rules_client=sec_group_rules_client,
-                        secgroup=secgroup,
-                        security_groups_client=security_groups_client,
-                        **ruleset)
-                except lib_exc.Conflict as ex:
-                    # if rule already exist - skip rule and continue
-                    msg = 'Security group rule already exists'
-                    if msg not in ex._error_string:
-                        raise ex
-                else:
-                    self.assertEqual(r_direction, sg_rule['direction'])
-                    rules.append(sg_rule)
-
-        return rules
-
-
-class EncryptionScenarioTest(ScenarioTest):
-    """Base class for encryption scenario tests"""
-
-    credentials = ['primary', 'admin']
-
-    @classmethod
-    def setup_clients(cls):
-        super(EncryptionScenarioTest, cls).setup_clients()
-        cls.admin_volume_types_client = cls.os_admin.volume_types_client_latest
-        cls.admin_encryption_types_client =\
-            cls.os_admin.encryption_types_client_latest
-
-    def create_encryption_type(self, client=None, type_id=None, provider=None,
-                               key_size=None, cipher=None,
-                               control_location=None):
-        if not client:
-            client = self.admin_encryption_types_client
-        if not type_id:
-            volume_type = self.create_volume_type()
-            type_id = volume_type['id']
-        LOG.debug("Creating an encryption type for volume type: %s", type_id)
-        client.create_encryption_type(
-            type_id, provider=provider, key_size=key_size, cipher=cipher,
-            control_location=control_location)
-
-    def create_encrypted_volume(self, encryption_provider, volume_type,
-                                key_size=256, cipher='aes-xts-plain64',
-                                control_location='front-end'):
-        volume_type = self.create_volume_type(name=volume_type)
-        self.create_encryption_type(type_id=volume_type['id'],
-                                    provider=encryption_provider,
-                                    key_size=key_size,
-                                    cipher=cipher,
-                                    control_location=control_location)
-        return self.create_volume(volume_type=volume_type['name'])
+        try:
+            volume = self.volumes_client.show_volume(volume['id'])['volume']
+            # Check the status. You can only detach an in-use volume, otherwise
+            # the compute API will return a 400 response.
+            if volume['status'] == 'in-use':
+                self.servers_client.detach_volume(server['id'], volume['id'])
+        except lib_exc.NotFound:
+            # Ignore 404s on detach in case the server is deleted or the volume
+            # is already detached.
+            pass
diff --git a/cinder_tempest_plugin/scenario/test_snapshots.py b/cinder_tempest_plugin/scenario/test_snapshots.py
index 0abc13c..5a9611f 100644
--- a/cinder_tempest_plugin/scenario/test_snapshots.py
+++ b/cinder_tempest_plugin/scenario/test_snapshots.py
@@ -14,125 +14,17 @@
 #    under the License.
 
 from tempest.common import utils
-from tempest import config
-from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
-from tempest.lib import exceptions as lib_exc
 
 from cinder_tempest_plugin.scenario import manager
 
-CONF = config.CONF
-
 
 class SnapshotDataIntegrityTests(manager.ScenarioTest):
 
     def setUp(self):
         super(SnapshotDataIntegrityTests, self).setUp()
         self.keypair = self.create_keypair()
-        self.security_group = self._create_security_group()
-
-    def _attached_volume_name(
-            self, disks_list_before_attach, ip_address, private_key):
-        ssh = self.get_remote_client(ip_address, private_key=private_key)
-
-        def _wait_for_volume_available_on_system():
-            disks_list_after_attach = ssh.list_disks()
-            return len(disks_list_after_attach) > len(disks_list_before_attach)
-
-        if not test_utils.call_until_true(_wait_for_volume_available_on_system,
-                                          CONF.compute.build_timeout,
-                                          CONF.compute.build_interval):
-            raise lib_exc.TimeoutException
-
-        disks_list_after_attach = ssh.list_disks()
-        volume_name = [item for item in disks_list_after_attach
-                       if item not in disks_list_before_attach][0]
-        return volume_name
-
-    def _get_file_md5(self, ip_address, filename, dev_name=None,
-                      mount_path='/mnt', private_key=None, server=None):
-
-        ssh_client = self.get_remote_client(ip_address,
-                                            private_key=private_key,
-                                            server=server)
-        if dev_name is not None:
-            ssh_client.exec_command('sudo mount /dev/%s %s' % (dev_name,
-                                                               mount_path))
-
-        md5_sum = ssh_client.exec_command(
-            'sudo md5sum %s/%s|cut -c 1-32' % (mount_path, filename))
-        if dev_name is not None:
-            ssh_client.exec_command('sudo umount %s' % mount_path)
-        return md5_sum
-
-    def _count_files(self, ip_address, dev_name=None, mount_path='/mnt',
-                     private_key=None, server=None):
-        ssh_client = self.get_remote_client(ip_address,
-                                            private_key=private_key,
-                                            server=server)
-        if dev_name is not None:
-            ssh_client.exec_command('sudo mount /dev/%s %s' % (dev_name,
-                                                               mount_path))
-        count = ssh_client.exec_command('sudo ls -l %s | wc -l' % mount_path)
-        if dev_name is not None:
-            ssh_client.exec_command('sudo umount %s' % mount_path)
-        # We subtract 2 from the count since `wc -l` also includes the count
-        # of new line character and while creating the filesystem, a
-        # lost+found folder is also created
-        return int(count) - 2
-
-    def _make_fs(self, ip_address, private_key, server, dev_name, fs='ext4'):
-        ssh_client = self.get_remote_client(ip_address,
-                                            private_key=private_key,
-                                            server=server)
-
-        ssh_client.make_fs(dev_name, fs=fs)
-
-    def create_md5_new_file(self, ip_address, filename, dev_name=None,
-                            mount_path='/mnt', private_key=None, server=None):
-        ssh_client = self.get_remote_client(ip_address,
-                                            private_key=private_key,
-                                            server=server)
-
-        if dev_name is not None:
-            ssh_client.exec_command('sudo mount /dev/%s %s' % (dev_name,
-                                                               mount_path))
-        ssh_client.exec_command(
-            'sudo dd bs=1024 count=100 if=/dev/urandom of=/%s/%s' %
-            (mount_path, filename))
-        md5 = ssh_client.exec_command(
-            'sudo md5sum -b %s/%s|cut -c 1-32' % (mount_path, filename))
-        ssh_client.exec_command('sudo sync')
-        if dev_name is not None:
-            ssh_client.exec_command('sudo umount %s' % mount_path)
-        return md5
-
-    def get_md5_from_file(self, instance, instance_ip, filename,
-                          dev_name=None):
-
-        md5_sum = self._get_file_md5(instance_ip, filename=filename,
-                                     dev_name=dev_name,
-                                     private_key=self.keypair['private_key'],
-                                     server=instance)
-        count = self._count_files(instance_ip, dev_name=dev_name,
-                                  private_key=self.keypair['private_key'],
-                                  server=instance)
-        return count, md5_sum
-
-    def _attach_and_get_volume_device_name(self, server, volume, instance_ip,
-                                           private_key):
-        ssh_client = self.get_remote_client(
-            instance_ip, private_key=private_key,
-            server=server)
-        # List disks before volume attachment
-        disks_list_before_attach = ssh_client.list_disks()
-        # Attach volume
-        volume = self.nova_volume_attach(server, volume)
-        # Find the difference between disks before and after attachment that
-        # gives us the volume device name
-        volume_device_name = self._attached_volume_name(
-            disks_list_before_attach, instance_ip, private_key)
-        return volume_device_name
+        self.security_group = self.create_security_group()
 
     @decorators.idempotent_id('ff10644e-5a70-4a9f-9801-8204bb81fb61')
     @utils.services('compute', 'volume', 'image', 'network')
@@ -164,7 +56,7 @@
         instance_ip = self.get_server_ip(server)
 
         # Attach volume to instance and find it's device name (eg: /dev/vdb)
-        volume_device_name = self._attach_and_get_volume_device_name(
+        volume_device_name, __ = self._attach_and_get_volume_device_name(
             server, volume, instance_ip, self.keypair['private_key'])
 
         # Create filesystem on the volume
@@ -204,7 +96,7 @@
         # Create volume from snapshot, attach it to instance and check file
         # and contents for snap1
         volume_snap_1 = self.create_volume(snapshot_id=snapshot1['id'])
-        volume_device_name = self._attach_and_get_volume_device_name(
+        volume_device_name, __ = self._attach_and_get_volume_device_name(
             server, volume_snap_1, instance_ip, self.keypair['private_key'])
         count_snap_1, md5_file_1 = self.get_md5_from_file(
             server, instance_ip, 'file1', dev_name=volume_device_name)
@@ -217,7 +109,7 @@
         # Create volume from snapshot, attach it to instance and check file
         # and contents for snap2
         volume_snap_2 = self.create_volume(snapshot_id=snapshot2['id'])
-        volume_device_name = self._attach_and_get_volume_device_name(
+        volume_device_name, __ = self._attach_and_get_volume_device_name(
             server, volume_snap_2, instance_ip, self.keypair['private_key'])
         count_snap_2, md5_file_2 = self.get_md5_from_file(
             server, instance_ip, 'file2', dev_name=volume_device_name)
@@ -230,7 +122,7 @@
         # Create volume from snapshot, attach it to instance and check file
         # and contents for snap3
         volume_snap_3 = self.create_volume(snapshot_id=snapshot3['id'])
-        volume_device_name = self._attach_and_get_volume_device_name(
+        volume_device_name, __ = self._attach_and_get_volume_device_name(
             server, volume_snap_3, instance_ip, self.keypair['private_key'])
         count_snap_3, md5_file_3 = self.get_md5_from_file(
             server, instance_ip, 'file3', dev_name=volume_device_name)
diff --git a/cinder_tempest_plugin/scenario/test_volume_encrypted.py b/cinder_tempest_plugin/scenario/test_volume_encrypted.py
index baf55e7..69edfa6 100644
--- a/cinder_tempest_plugin/scenario/test_volume_encrypted.py
+++ b/cinder_tempest_plugin/scenario/test_volume_encrypted.py
@@ -16,7 +16,7 @@
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
-from cinder_tempest_plugin.scenario import manager
+from tempest.scenario import manager
 
 CONF = config.CONF
 
@@ -130,7 +130,7 @@
         """
 
         keypair = self.create_keypair()
-        security_group = self._create_security_group()
+        security_group = self.create_security_group()
 
         volume = self.create_encrypted_volume_from_image('luks')
 
diff --git a/requirements.txt b/requirements.txt
index 6706885..40ef3a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,4 @@
 oslo.config>=5.1.0 # Apache-2.0
 six>=1.10.0 # MIT
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
-tempest>=17.1.0 # Apache-2.0
+tempest>=27.0.0 # Apache-2.0