| #!/usr/bin/env python |
| # |
| # Tests for image streaming. |
| # |
| # Copyright (C) 2012 IBM Corp. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| # |
| |
| import os |
| import iotests |
| from iotests import qemu_img, qemu_io |
| import struct |
| |
| backing_img = os.path.join(iotests.test_dir, 'backing.img') |
| mid_img = os.path.join(iotests.test_dir, 'mid.img') |
| test_img = os.path.join(iotests.test_dir, 'test.img') |
| |
| class ImageStreamingTestCase(iotests.QMPTestCase): |
| '''Abstract base class for image streaming test cases''' |
| |
| def assert_no_active_streams(self): |
| result = self.vm.qmp('query-block-jobs') |
| self.assert_qmp(result, 'return', []) |
| |
| def cancel_and_wait(self, drive='drive0'): |
| '''Cancel a block job and wait for it to finish''' |
| result = self.vm.qmp('block-job-cancel', device=drive) |
| self.assert_qmp(result, 'return', {}) |
| |
| cancelled = False |
| while not cancelled: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_CANCELLED': |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', drive) |
| cancelled = True |
| |
| self.assert_no_active_streams() |
| |
| def create_image(self, name, size): |
| file = open(name, 'w') |
| i = 0 |
| while i < size: |
| sector = struct.pack('>l504xl', i / 512, i / 512) |
| file.write(sector) |
| i = i + 512 |
| file.close() |
| |
| |
| class TestSingleDrive(ImageStreamingTestCase): |
| image_len = 1 * 1024 * 1024 # MB |
| |
| def setUp(self): |
| self.create_image(backing_img, TestSingleDrive.image_len) |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img) |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img) |
| self.vm = iotests.VM().add_drive(test_img) |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| os.remove(test_img) |
| os.remove(mid_img) |
| os.remove(backing_img) |
| |
| def test_stream(self): |
| self.assert_no_active_streams() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| completed = False |
| while not completed: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_COMPLETED': |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/offset', self.image_len) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| |
| self.assert_no_active_streams() |
| self.vm.shutdown() |
| |
| self.assertEqual(qemu_io('-c', 'map', backing_img), |
| qemu_io('-c', 'map', test_img), |
| 'image file map does not match backing file after streaming') |
| |
| def test_stream_partial(self): |
| self.assert_no_active_streams() |
| |
| result = self.vm.qmp('block-stream', device='drive0', base=mid_img) |
| self.assert_qmp(result, 'return', {}) |
| |
| completed = False |
| while not completed: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_COMPLETED': |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/offset', self.image_len) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| |
| self.assert_no_active_streams() |
| self.vm.shutdown() |
| |
| self.assertEqual(qemu_io('-c', 'map', mid_img), |
| qemu_io('-c', 'map', test_img), |
| 'image file map does not match backing file after streaming') |
| |
| def test_device_not_found(self): |
| result = self.vm.qmp('block-stream', device='nonexistent') |
| self.assert_qmp(result, 'error/class', 'DeviceNotFound') |
| |
| class TestStreamStop(ImageStreamingTestCase): |
| image_len = 8 * 1024 * 1024 * 1024 # GB |
| |
| def setUp(self): |
| qemu_img('create', backing_img, str(TestStreamStop.image_len)) |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) |
| self.vm = iotests.VM().add_drive(test_img) |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| os.remove(test_img) |
| os.remove(backing_img) |
| |
| def test_stream_stop(self): |
| import time |
| |
| self.assert_no_active_streams() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| time.sleep(0.1) |
| events = self.vm.get_qmp_events(wait=False) |
| self.assertEqual(events, [], 'unexpected QMP event: %s' % events) |
| |
| self.cancel_and_wait() |
| |
| class TestSetSpeed(ImageStreamingTestCase): |
| image_len = 80 * 1024 * 1024 # MB |
| |
| def setUp(self): |
| qemu_img('create', backing_img, str(TestSetSpeed.image_len)) |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) |
| self.vm = iotests.VM().add_drive(test_img) |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| os.remove(test_img) |
| os.remove(backing_img) |
| |
| # This is a short performance test which is not run by default. |
| # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" |
| def perf_test_throughput(self): |
| self.assert_no_active_streams() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| completed = False |
| while not completed: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_COMPLETED': |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/offset', self.image_len) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| |
| self.assert_no_active_streams() |
| |
| def test_set_speed(self): |
| self.assert_no_active_streams() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| # Default speed is 0 |
| result = self.vm.qmp('query-block-jobs') |
| self.assert_qmp(result, 'return[0]/device', 'drive0') |
| self.assert_qmp(result, 'return[0]/speed', 0) |
| |
| result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Ensure the speed we set was accepted |
| result = self.vm.qmp('query-block-jobs') |
| self.assert_qmp(result, 'return[0]/device', 'drive0') |
| self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) |
| |
| self.cancel_and_wait() |
| |
| # Check setting speed in block-stream works |
| result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('query-block-jobs') |
| self.assert_qmp(result, 'return[0]/device', 'drive0') |
| self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) |
| |
| self.cancel_and_wait() |
| |
| def test_set_speed_invalid(self): |
| self.assert_no_active_streams() |
| |
| result = self.vm.qmp('block-stream', device='drive0', speed=-1) |
| self.assert_qmp(result, 'error/class', 'InvalidParameter') |
| self.assert_qmp(result, 'error/data/name', 'speed') |
| |
| self.assert_no_active_streams() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) |
| self.assert_qmp(result, 'error/class', 'InvalidParameter') |
| self.assert_qmp(result, 'error/data/name', 'speed') |
| |
| self.cancel_and_wait() |
| |
| if __name__ == '__main__': |
| iotests.main(supported_fmts=['qcow2', 'qed']) |
