How to use hotunplug method in avocado

Best Python code snippet using avocado_python

blockdev_stream_hotunplug.py

Source:blockdev_stream_hotunplug.py

1import time2from virttest.qemu_monitor import QMPCmdError3from provider import job_utils4from provider.blockdev_stream_nowait import BlockdevStreamNowaitTest5class BlockdevStreamHotunplugTest(BlockdevStreamNowaitTest):6    """7    Block stream with hotunplug test8    """9    def hotunplug_frontend_device(self):10        """11        device_del the frontend device during stream,12        the device CAN be removed without any issue13        """14        self.main_vm.monitor.cmd('device_del', {'id': self.base_tag})15    def wait_till_frontend_device_deleted(self):16        """Wait till devices removed from output of query-block"""17        def _is_device_deleted(device):18            for item in self.main_vm.monitor.query("block"):19                if device in item["qdev"]:20                    return False21            return True22        tmo = self.params.get_numeric('device_del_timeout', 60)23        for i in range(tmo):24            if _is_device_deleted(self.base_tag):25                break26            time.sleep(1)27        else:28            self.test.fail('Failed to hotunplug the frontend device')29    def hotunplug_format_node(self):30        """31        blockdev-del the format nodes during streaming,32        the nodes CANNOT be removed for they are busy33        """34        try:35            self.main_vm.monitor.cmd('blockdev-del',36                                     {'node-name': self.params['node']})37        except QMPCmdError as e:38            if self.params['block_node_busy_error'] not in str(e):39                self.test.fail('Unexpected error: %s' % str(e))40        else:41            self.test.fail('blockdev-del succeeded unexpectedly')42    def do_test(self):43        self.snapshot_test()44        self.blockdev_stream()45        job_utils.check_block_jobs_started(46            self.main_vm, [self._job],47            self.params.get_numeric('job_started_timeout', 60)48        )49        self.hotunplug_frontend_device()50        self.wait_till_frontend_device_deleted()51        self.hotunplug_format_node()52        job_utils.check_block_jobs_running(53            self.main_vm, [self._job],54            self.params.get_numeric('job_running_timeout', 300)55        )56        self.main_vm.monitor.cmd(57            "block-job-set-speed", {'device': self._job, 'speed': 0})58        self.wait_stream_job_completed()59        self.check_backing_file()60        self.clone_vm.create()61        self.mount_data_disks()62        self.verify_data_file()63def run(test, params, env):64    """65    Block stream with hotunplug test66    test steps:67        1. boot VM with a 2G data disk68        2. format the data disk and mount it69        3. create a file70        4. add a snapshot image to VM via qmp commands71        5. do live snapshot (base: data, overlay: snapshot)72        6. do block-stream73        7. hotunplug the frontend device with device_del (OK)74        8. hotunplug the format node with blockdev-del (ERROR)75        9. check stream continues and wait stream done76       10. restart VM with the snapshot disk77       11. check the file and its md578    :param test: test object79    :param params: test configuration dict80    :param env: env object81    """82    stream_test = BlockdevStreamHotunplugTest(test, params, env)...

blockdev_mirror_hotunplug.py

Source:blockdev_mirror_hotunplug.py

1import time2from virttest.qemu_monitor import QMPCmdError3from provider.blockdev_mirror_nowait import BlockdevMirrorNowaitTest4class BlockdevMirrorHotunplugTest(BlockdevMirrorNowaitTest):5    """6    Block mirror with hotunplug test7    """8    def hotunplug_frontend_devices(self):9        """10        device_del the frontend devices during mirroring,11        the devices CAN be removed without any issue12        """13        def _device_del(device):14            self.main_vm.monitor.cmd('device_del', {'id': device})15        list(map(_device_del, self._source_images))16    def wait_till_frontend_devices_deleted(self):17        """Wait till devices removed from output of query-block"""18        def _is_device_deleted(device):19            for item in self.main_vm.monitor.query("block"):20                if device in item["qdev"]:21                    return False22            return True23        def _wait_till_device_deleted(device):24            tmo = self.params.get_numeric('device_del_timeout', 60)25            for i in range(tmo):26                if _is_device_deleted(device):27                    break28                time.sleep(1)29            else:30                self.test.fail('Failed to hotunplug the frontend device')31        list(map(_wait_till_device_deleted, self._source_images))32    def hotunplug_format_nodes(self):33        """34        blockdev-del the format nodes during mirroring,35        the nodes CANNOT be removed for they are busy36        """37        def _blockdev_del(node):38            try:39                self.main_vm.monitor.cmd('blockdev-del', {'node-name': node})40            except QMPCmdError as e:41                err = self.params['block_node_busy_error'] % node42                if err not in str(e):43                    self.test.fail('Unexpected error: %s' % str(e))44            else:45                self.test.fail('blockdev-del succeeded unexpectedly')46        list(map(_blockdev_del, self._source_nodes))47    def do_test(self):48        self.blockdev_mirror()49        self.check_block_jobs_started(self._jobs)50        self.hotunplug_frontend_devices()51        self.wait_till_frontend_devices_deleted()52        self.hotunplug_format_nodes()53        self.check_block_jobs_running(self._jobs)54        self.wait_mirror_jobs_completed()55        self.clone_vm_with_mirrored_images()56        self.verify_data_files()57def run(test, params, env):58    """59    Block mirror with hotunplug test60    test steps:61        1. boot VM with a 2G data disk62        2. format the data disk and mount it63        3. create a file64        4. add a target disk for mirror to VM via qmp commands65        5. do block-mirror with sync mode full66        6. hotunplug the frontend device with device_del (OK)67        7. hotunplug the format node with blockdev-del (ERROR)68        8. check mirror continues and wait mirror done69        9. restart VM with the mirror disk70       10. check the file and its md571    :param test: test object72    :param params: test configuration dict73    :param env: env object74    """75    mirror_test = BlockdevMirrorHotunplugTest(test, params, env)...

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