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How to use _attach_volume_to_servers method in tempest

Best Python code snippet using tempest_python

test_attach_volume.py

Source:test_attach_volume.py

...251    def skip_checks(cls):252        super(AttachVolumeMultiAttachTest, cls).skip_checks()253        if not CONF.compute_feature_enabled.volume_multiattach:254            raise cls.skipException('Volume multi-attach is not available.')255    def _attach_volume_to_servers(self, volume, servers):256        """Attaches the given volume to the list of servers.257        :param volume: The multiattach volume to use.258        :param servers: list of server instances on which the volume will be259                        attached260        :returns: dict of server ID to volumeAttachment dict entries261        """262        attachments = {}263        for server in servers:264            # map the server id to the volume attachment265            attachments[server['id']] = self.attach_volume(server, volume)266            # NOTE(mriedem): In the case of multi-attach, after the first267            # attach the volume will be in-use. On the second attach, nova will268            # '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:...

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