| #!/usr/bin/env python |
| # |
| # Tests for image block commit. |
| # |
| # Copyright (C) 2012 IBM, Corp. |
| # Copyright (C) 2012 Red Hat, Inc. |
| # |
| # 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/>. |
| # |
| # Test for live block commit |
| # Derived from Image Streaming Test 030 |
| |
| import time |
| 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 ImageCommitTestCase(iotests.QMPTestCase): |
| '''Abstract base class for image commit test cases''' |
| |
| def assert_no_active_commit(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', 'commit') |
| self.assert_qmp(event, 'data/device', drive) |
| cancelled = True |
| |
| self.assert_no_active_commit() |
| |
| 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(ImageCommitTestCase): |
| image_len = 1 * 1024 * 1024 |
| test_len = 1 * 1024 * 256 |
| |
| 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) |
| qemu_io('-c', 'write -P 0xab 0 524288', backing_img) |
| qemu_io('-c', 'write -P 0xef 524288 524288', mid_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_commit(self): |
| self.assert_no_active_commit() |
| result = self.vm.qmp('block-commit', device='drive0', top='%s' % 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', 'commit') |
| 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_commit() |
| self.vm.shutdown() |
| |
| self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) |
| self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) |
| |
| def test_device_not_found(self): |
| result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img) |
| self.assert_qmp(result, 'error/class', 'DeviceNotFound') |
| |
| def test_top_same_base(self): |
| self.assert_no_active_commit() |
| result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img) |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| self.assert_qmp(result, 'error/desc', 'Invalid files for merge: top and base are the same') |
| |
| def test_top_invalid(self): |
| self.assert_no_active_commit() |
| result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img) |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') |
| |
| def test_base_invalid(self): |
| self.assert_no_active_commit() |
| result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile') |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found') |
| |
| def test_top_is_active(self): |
| self.assert_no_active_commit() |
| result = self.vm.qmp('block-commit', device='drive0', top='%s' % test_img, base='%s' % backing_img) |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| self.assert_qmp(result, 'error/desc', 'Top image as the active layer is currently unsupported') |
| |
| def test_top_and_base_reversed(self): |
| self.assert_no_active_commit() |
| result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img) |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| self.assert_qmp(result, 'error/desc', 'Base (%(1)s) is not reachable from top (%(2)s)' % {"1" : mid_img, "2" : backing_img}) |
| |
| def test_top_omitted(self): |
| self.assert_no_active_commit() |
| result = self.vm.qmp('block-commit', device='drive0') |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| self.assert_qmp(result, 'error/desc', "Parameter 'top' is missing") |
| |
| |
| class TestSetSpeed(ImageCommitTestCase): |
| 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, 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_set_speed(self): |
| self.assert_no_active_commit() |
| |
| result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=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', 1024 * 1024) |
| |
| self.cancel_and_wait() |
| |
| |
| if __name__ == '__main__': |
| iotests.main(supported_fmts=['qcow2', 'qed']) |
