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How to use _detach_multiattach_volume method in tempest

Best Python code snippet using tempest_python

test_attach_volume.py

Source:test_attach_volume.py

...268            # 'reserve' the volume which puts it back into 'attaching' status269            # and then the volume shouldn't go back to in-use until the compute270            # actually attaches the server to the volume.271        return attachments272    def _detach_multiattach_volume(self, volume_id, server_id):273        """Detaches a multiattach volume from the given server.274        Depending on the number of attachments the volume has, this method275        will wait for the volume to go to back to 'in-use' status if there are276        more attachments or 'available' state if there are no more attachments.277        """278        # Count the number of attachments before starting the detach.279        volume = self.volumes_client.show_volume(volume_id)['volume']280        attachments = volume['attachments']281        wait_status = 'in-use' if len(attachments) > 1 else 'available'282        # Now detach the volume from the given server.283        self.servers_client.detach_volume(server_id, volume_id)284        # Now wait for the volume status to change.285        waiters.wait_for_volume_resource_status(286            self.volumes_client, volume_id, wait_status)287    def _create_multiattach_volume(self, bootable=False):288        kwargs = {}289        if bootable:290            kwargs['image_ref'] = CONF.compute.image_ref291        return self.create_volume(multiattach=True, **kwargs)292    def _create_and_multiattach(self):293        """Creates two server instances and a volume and attaches to both.294        :returns: A three-item tuple of the list of created servers,295                  the created volume, and dict of server ID to volumeAttachment296                  dict entries297        """298        servers = []299        for x in range(2):300            name = 'multiattach-server-%i' % x301            servers.append(self.create_test_server(name=name))302        # Now wait for the servers to be ACTIVE.303        for server in servers:304            waiters.wait_for_server_status(self.servers_client, server['id'],305                                           'ACTIVE')306        volume = self._create_multiattach_volume()307        # Attach the volume to the servers308        attachments = self._attach_volume_to_servers(volume, servers)309        return servers, volume, attachments310    @decorators.idempotent_id('8d5853f7-56e7-4988-9b0c-48cea3c7049a')311    def test_list_get_volume_attachments_multiattach(self):312        # Attach a single volume to two servers.313        servers, volume, attachments = self._create_and_multiattach()314        # List attachments from the volume and make sure the server uuids315        # are in that list.316        vol_attachments = self.volumes_client.show_volume(317            volume['id'])['volume']['attachments']318        attached_server_ids = [attachment['server_id']319                               for attachment in vol_attachments]320        self.assertEqual(2, len(attached_server_ids))321        # List Volume attachment of the servers322        for server in servers:323            self.assertIn(server['id'], attached_server_ids)324            vol_attachments = self.servers_client.list_volume_attachments(325                server['id'])['volumeAttachments']326            self.assertEqual(1, len(vol_attachments))327            attachment = attachments[server['id']]328            self.assertDictEqual(attachment, vol_attachments[0])329            # Detach the volume from this server.330            self._detach_multiattach_volume(volume['id'], server['id'])331    def _boot_from_multiattach_volume(self):332        """Boots a server from a multiattach volume.333        The volume will not be deleted when the server is deleted.334        :returns: 2-item tuple of (server, volume)335        """336        volume = self._create_multiattach_volume(bootable=True)337        # Now create a server from the bootable volume.338        bdm = [{339            'uuid': volume['id'],340            'source_type': 'volume',341            'destination_type': 'volume',342            'boot_index': 0,343            'delete_on_termination': False}]344        server = self.create_test_server(345            image_id='', block_device_mapping_v2=bdm, wait_until='ACTIVE')346        # Assert the volume is attached to the server.347        attachments = self.servers_client.list_volume_attachments(348            server['id'])['volumeAttachments']349        self.assertEqual(1, len(attachments))350        self.assertEqual(volume['id'], attachments[0]['volumeId'])351        return server, volume352    @decorators.idempotent_id('65e33aa2-185b-44c8-b22e-e524973ed625')353    def test_boot_from_multiattach_volume(self):354        """Simple test to boot an instance from a multiattach volume."""355        self._boot_from_multiattach_volume()356    @utils.services('image')357    @decorators.idempotent_id('885ac48a-2d7a-40c5-ae8b-1993882d724c')358    def test_snapshot_volume_backed_multiattach(self):359        """Boots a server from a multiattach volume and snapshots the server.360        Creating the snapshot of the server will also create a snapshot of361        the volume.362        """363        server, volume = self._boot_from_multiattach_volume()364        # Create a snapshot of the server (and volume implicitly).365        self.create_image_from_server(366            server['id'], name='multiattach-snapshot',367            wait_until='active', wait_for_server=True)368        # TODO(mriedem): Make sure the volume snapshot exists. This requires369        # adding the volume snapshots client to BaseV2ComputeTest.370        # Delete the server, wait for it to be gone, and make sure the volume371        # still exists.372        self.servers_client.delete_server(server['id'])373        waiters.wait_for_server_termination(self.servers_client, server['id'])374        # Delete the volume and cascade the delete of the volume snapshot.375        self.volumes_client.delete_volume(volume['id'], cascade=True)376        # Now we have to wait for the volume to be gone otherwise the normal377        # teardown will fail since it will race with our call and the snapshot378        # might still exist.379        self.volumes_client.wait_for_resource_deletion(volume['id'])380    @decorators.idempotent_id('f01c7169-a124-4fc7-ae60-5e380e247c9c')381    @testtools.skipUnless(CONF.compute_feature_enabled.resize,382                          'Resize not available.')383    def test_resize_server_with_multiattached_volume(self):384        # Attach a single volume to multiple servers, then resize the servers385        servers, volume, _ = self._create_and_multiattach()386        for server in servers:387            self.resize_server(server['id'], self.flavor_ref_alt)388        for server in servers:389            self._detach_multiattach_volume(volume['id'], server['id'])390    # TODO(mriedem): Might be interesting to create a bootable multiattach391    # volume with delete_on_termination=True, create server1 from the392    # volume, then attach it to server2, and then delete server1 in which393    # case the volume won't be deleted because it's still attached to...

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