Add Snapshot data integrity test

This patch adds data integrity tests for snapshot with the following
procedure :

1) create a volume from image
2) Boot an instance from the volume
3) create file on vm and write data into it
4) create first snapshot
5) repeat 3
5) create second snapshot
6) repeat 3
7) create third snapshot

Now restore the snapshots one by one into volume, create instances
from it and check the number of files and file content at each
point snapshot was created.

We are also temporarily making a copy of tempest scenario manager until
the actual manager is available for import in tempest plugins.

Change-Id: I5c5ff6f996dd39b52fada82f3938b628e58b0a2c
diff --git a/cinder_tempest_plugin/scenario/manager.py b/cinder_tempest_plugin/scenario/manager.py
new file mode 100644
index 0000000..70c25ae
--- /dev/null
+++ b/cinder_tempest_plugin/scenario/manager.py
@@ -0,0 +1,1106 @@
+# TODO: Remove this file when tempest scenario manager becomes stable
+# Copyright 2012 OpenStack Foundation
+# Copyright 2013 IBM Corp.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    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
+
+CONF = config.CONF
+
+LOG = log.getLogger(__name__)
+
+LATEST_MICROVERSION = 'latest'
+
+
+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))
+
+    @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
+
+    # ## Test functions library
+    #
+    # The create_[resource] functions only return body and discard the
+    # resp part which is not used in scenario tests
+
+    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 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.
+
+        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.
+
+        :param **kwargs:
+            See extra parameters below
+
+        :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``.
+        """
+
+        # 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.
+
+        # Needed for the cross_tenant_traffic test:
+        if clients is None:
+            clients = self.os_primary
+
+        if name is None:
+            name = data_utils.rand_name(self.__class__.__name__ + "-server")
+
+        vnic_type = kwargs.pop('vnic_type', CONF.network.port_vnic_type)
+        profile = kwargs.pop('port_profile', CONF.network.port_profile)
+
+        # If vnic_type or profile are configured create port for
+        # every network
+        if vnic_type or profile:
+            ports = []
+            create_port_body = {}
+
+            if vnic_type:
+                create_port_body['binding:vnic_type'] = vnic_type
+
+            if profile:
+                create_port_body['binding:profile'] = profile
+
+            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])
+
+                    sec_groups_names = [s['name'] for s in kwargs.pop(
+                        'security_groups')]
+                    security_groups_ids = [sec_dict[s]
+                                           for s in sec_groups_names]
+
+                    if security_groups_ids:
+                        create_port_body[
+                            'security_groups'] = security_groups_ids
+                networks = 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):
+        if not client:
+            client = self.os_admin.volume_types_client_latest
+        if not name:
+            class_name = self.__class__.__name__
+            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(
+            name=randomized_name, extra_specs=extra_specs)['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']
+
+        # 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
+
+    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
+        """
+
+        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']
+        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
+
+    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 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
+        """
+        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'])
diff --git a/cinder_tempest_plugin/scenario/test_snapshots.py b/cinder_tempest_plugin/scenario/test_snapshots.py
new file mode 100644
index 0000000..2cb172f
--- /dev/null
+++ b/cinder_tempest_plugin/scenario/test_snapshots.py
@@ -0,0 +1,163 @@
+# Copyright 2020 Red Hat, Inc.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from cinder_tempest_plugin.scenario import manager
+from tempest.common import utils
+from tempest.lib import decorators
+
+
+class SnapshotDataIntegrityTests(manager.ScenarioTest):
+
+    def setUp(self):
+        super(SnapshotDataIntegrityTests, self).setUp()
+        self.keypair = self.create_keypair()
+        self.security_group = self._create_security_group()
+
+    def _get_file_md5(self, ip_address, filename, mount_path='/mnt',
+                      private_key=None, server=None):
+        ssh_client = self.get_remote_client(ip_address,
+                                            private_key=private_key,
+                                            server=server)
+
+        md5_sum = ssh_client.exec_command(
+            'sudo md5sum %s/%s|cut -c 1-32' % (mount_path, filename))
+        return md5_sum
+
+    def _count_files(self, ip_address, mount_path='/mnt', private_key=None,
+                     server=None):
+        ssh_client = self.get_remote_client(ip_address,
+                                            private_key=private_key,
+                                            server=server)
+        count = ssh_client.exec_command('sudo ls -l %s | wc -l' % mount_path)
+        return int(count) - 1
+
+    def _launch_instance_from_snapshot(self, snap):
+        volume_snap = self.create_volume(snapshot_id=snap['id'],
+                                         size=snap['size'])
+
+        server_snap = self.boot_instance_from_resource(
+            source_id=volume_snap['id'],
+            source_type='volume',
+            keypair=self.keypair,
+            security_group=self.security_group)
+
+        return server_snap
+
+    def create_md5_new_file(self, ip_address, filename, mount_path='/mnt',
+                            private_key=None, server=None):
+        ssh_client = self.get_remote_client(ip_address,
+                                            private_key=private_key,
+                                            server=server)
+
+        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')
+        return md5
+
+    def get_md5_from_file(self, instance, filename):
+
+        instance_ip = self.get_server_ip(instance)
+
+        md5_sum = self._get_file_md5(instance_ip, filename=filename,
+                                     private_key=self.keypair['private_key'],
+                                     server=instance)
+        count = self._count_files(instance_ip,
+                                  private_key=self.keypair['private_key'],
+                                  server=instance)
+        return count, md5_sum
+
+    @decorators.idempotent_id('ff10644e-5a70-4a9f-9801-8204bb81fb61')
+    @utils.services('compute', 'volume', 'image', 'network')
+    def test_snapshot_data_integrity(self):
+        """This test checks the data integrity after creating and restoring
+
+        snapshots. The procedure is as follows:
+
+        1) create a volume from image
+        2) Boot an instance from the volume
+        3) create file on vm and write data into it
+        4) create snapshot
+        5) repeat 3 and 4 two more times (simply creating 3 snapshots)
+
+        Now restore the snapshots one by one into volume, create instances
+        from it and check the number of files and file content at each
+        point when snapshot was created.
+        """
+
+        # Create a volume from image
+        volume = self.create_volume_from_image()
+
+        # create an instance from bootable volume
+        server = self.boot_instance_from_resource(
+            source_id=volume['id'],
+            source_type='volume',
+            keypair=self.keypair,
+            security_group=self.security_group)
+
+        instance_ip = self.get_server_ip(server)
+
+        # Write data to volume
+        file1_md5 = self.create_md5_new_file(
+            instance_ip, filename="file1",
+            private_key=self.keypair['private_key'],
+            server=instance_ip)
+
+        # Create first snapshot
+        snapshot1 = self.create_volume_snapshot(volume['id'], force=True)
+
+        # Write data to volume
+        file2_md5 = self.create_md5_new_file(
+            instance_ip, filename="file2",
+            private_key=self.keypair['private_key'],
+            server=instance_ip)
+
+        # Create second snapshot
+        snapshot2 = self.create_volume_snapshot(volume['id'], force=True)
+
+        # Write data to volume
+        file3_md5 = self.create_md5_new_file(
+            instance_ip, filename="file3",
+            private_key=self.keypair['private_key'],
+            server=instance_ip)
+
+        # Create third snapshot
+        snapshot3 = self.create_volume_snapshot(volume['id'], force=True)
+
+        # Create volume, instance and check file and contents for snap1
+        instance_1 = self._launch_instance_from_snapshot(snapshot1)
+        count_snap_1, md5_file_1 = self.get_md5_from_file(instance_1,
+                                                          'file1')
+
+        self.assertEqual(count_snap_1, 1)
+        self.assertEqual(file1_md5, md5_file_1)
+
+        # Create volume, instance and check file and contents for snap2
+        instance_2 = self._launch_instance_from_snapshot(snapshot2)
+        count_snap_2, md5_file_2 = self.get_md5_from_file(instance_2,
+                                                          'file2')
+
+        self.assertEqual(count_snap_2, 2)
+        self.assertEqual(file2_md5, md5_file_2)
+
+        # Create volume, instance and check file and contents for snap3
+        instance_3 = self._launch_instance_from_snapshot(snapshot3)
+        count_snap_3, md5_file_3 = self.get_md5_from_file(instance_3,
+                                                          'file3')
+
+        self.assertEqual(count_snap_3, 3)
+        self.assertEqual(file3_md5, md5_file_3)