| #!/usr/bin/env python3 | |
| # group: rw auto backing | |
| # | |
| # Tests for image mirroring. | |
| # | |
| # 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/>. | |
| # | |
| import time | |
| import os | |
| import re | |
| import json | |
| import iotests | |
| from iotests import qemu_img, qemu_img_map, qemu_io | |
| backing_img = os.path.join(iotests.test_dir, 'backing.img') | |
| target_backing_img = os.path.join(iotests.test_dir, 'target-backing.img') | |
| test_img = os.path.join(iotests.test_dir, 'test.img') | |
| target_img = os.path.join(iotests.test_dir, 'target.img') | |
| quorum_img1 = os.path.join(iotests.test_dir, 'quorum1.img') | |
| quorum_img2 = os.path.join(iotests.test_dir, 'quorum2.img') | |
| quorum_img3 = os.path.join(iotests.test_dir, 'quorum3.img') | |
| quorum_repair_img = os.path.join(iotests.test_dir, 'quorum_repair.img') | |
| quorum_snapshot_file = os.path.join(iotests.test_dir, 'quorum_snapshot.img') | |
| nbd_sock_path = os.path.join(iotests.sock_dir, 'nbd.sock') | |
| class TestSingleDrive(iotests.QMPTestCase): | |
| image_len = 1 * 1024 * 1024 # MB | |
| qmp_cmd = 'drive-mirror' | |
| qmp_target = target_img | |
| def setUp(self): | |
| iotests.create_image(backing_img, self.image_len) | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) | |
| self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=base") | |
| if iotests.qemu_default_machine == 'pc': | |
| self.vm.add_drive(None, 'media=cdrom', 'ide') | |
| self.vm.launch() | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| os.remove(test_img) | |
| os.remove(backing_img) | |
| try: | |
| os.remove(target_img) | |
| except OSError: | |
| pass | |
| def test_complete(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| target=self.qmp_target) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_cancel(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| target=self.qmp_target) | |
| self.cancel_and_wait(force=True) | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', test_img) | |
| def test_cancel_after_ready(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| target=self.qmp_target) | |
| self.wait_ready_and_cancel() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', test_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_pause(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| target=self.qmp_target) | |
| self.pause_job('drive0') | |
| result = self.vm.qmp('query-block-jobs') | |
| offset = self.dictpath(result, 'return[0]/offset') | |
| time.sleep(0.5) | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assert_qmp(result, 'return[0]/offset', offset) | |
| self.vm.cmd('block-job-resume', device='drive0') | |
| self.complete_and_wait() | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_small_buffer(self): | |
| self.assert_no_active_block_jobs() | |
| # A small buffer is rounded up automatically | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| buf_size=4096, target=self.qmp_target) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_small_buffer2(self): | |
| self.assert_no_active_block_jobs() | |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,size=%d' | |
| % (self.image_len, self.image_len), target_img) | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| buf_size=65536, mode='existing', target=self.qmp_target) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_large_cluster(self): | |
| self.assert_no_active_block_jobs() | |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' | |
| % (self.image_len, backing_img), | |
| '-F', 'raw', target_img) | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| mode='existing', target=self.qmp_target) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| # Tests that the insertion of the mirror_top filter node doesn't make a | |
| # difference to query-block | |
| def test_implicit_node(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', | |
| target=self.qmp_target) | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', test_img) | |
| self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) | |
| self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) | |
| self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) | |
| self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) | |
| self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) | |
| result = self.vm.qmp('query-blockstats') | |
| self.assert_qmp(result, 'return[0]/node-name', 'top') | |
| self.assert_qmp(result, 'return[0]/backing/node-name', 'base') | |
| self.cancel_and_wait(force=True) | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', test_img) | |
| self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) | |
| self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) | |
| self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) | |
| self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) | |
| self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) | |
| result = self.vm.qmp('query-blockstats') | |
| self.assert_qmp(result, 'return[0]/node-name', 'top') | |
| self.assert_qmp(result, 'return[0]/backing/node-name', 'base') | |
| def test_medium_not_found(self): | |
| if iotests.qemu_default_machine != 'pc': | |
| return | |
| result = self.vm.qmp(self.qmp_cmd, device='ide1-cd0', sync='full', | |
| target=self.qmp_target) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_image_not_found(self): | |
| result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', | |
| mode='existing', target=self.qmp_target) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_device_not_found(self): | |
| result = self.vm.qmp(self.qmp_cmd, device='nonexistent', sync='full', | |
| target=self.qmp_target) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| class TestSingleBlockdev(TestSingleDrive): | |
| qmp_cmd = 'blockdev-mirror' | |
| qmp_target = 'node1' | |
| def setUp(self): | |
| TestSingleDrive.setUp(self) | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) | |
| args = {'driver': iotests.imgfmt, | |
| 'node-name': self.qmp_target, | |
| 'file': { 'filename': target_img, 'driver': 'file' } } | |
| self.vm.cmd("blockdev-add", args) | |
| def test_mirror_to_self(self): | |
| result = self.vm.qmp(self.qmp_cmd, job_id='job0', | |
| device=self.qmp_target, sync='full', | |
| target=self.qmp_target) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def do_test_resize(self, device, node): | |
| def pre_finalize(): | |
| if device: | |
| result = self.vm.qmp('block_resize', device=device, size=65536) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| result = self.vm.qmp('block_resize', node_name=node, size=65536) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| self.vm.cmd(self.qmp_cmd, job_id='job0', device='drive0', | |
| sync='full', target=self.qmp_target, | |
| auto_finalize=False, auto_dismiss=False) | |
| result = self.vm.run_job('job0', auto_finalize=False, | |
| pre_finalize=pre_finalize) | |
| self.assertEqual(result, None) | |
| def test_source_resize(self): | |
| self.do_test_resize('drive0', 'top') | |
| def test_target_resize(self): | |
| self.do_test_resize(None, self.qmp_target) | |
| def do_test_target_size(self, size): | |
| self.vm.cmd('block_resize', node_name=self.qmp_target, | |
| size=size) | |
| self.vm.cmd(self.qmp_cmd, job_id='job0', | |
| device='drive0', sync='full', auto_dismiss=False, | |
| target=self.qmp_target) | |
| result = self.vm.run_job('job0') | |
| self.assertEqual(result, 'Source and target image have different sizes') | |
| # qed does not support shrinking | |
| @iotests.skip_for_formats(('qed')) | |
| def test_small_target(self): | |
| self.do_test_target_size(self.image_len // 2) | |
| def test_large_target(self): | |
| self.do_test_target_size(self.image_len * 2) | |
| test_large_cluster = None | |
| test_image_not_found = None | |
| test_small_buffer2 = None | |
| class TestSingleDriveZeroLength(TestSingleDrive): | |
| image_len = 0 | |
| test_small_buffer2 = None | |
| test_large_cluster = None | |
| class TestSingleBlockdevZeroLength(TestSingleBlockdev): | |
| image_len = 0 | |
| test_small_target = None | |
| test_large_target = None | |
| class TestSingleDriveUnalignedLength(TestSingleDrive): | |
| image_len = 1025 * 1024 | |
| test_small_buffer2 = None | |
| test_large_cluster = None | |
| class TestSingleBlockdevUnalignedLength(TestSingleBlockdev): | |
| image_len = 1025 * 1024 | |
| class TestMirrorNoBacking(iotests.QMPTestCase): | |
| image_len = 2 * 1024 * 1024 # MB | |
| def setUp(self): | |
| iotests.create_image(backing_img, TestMirrorNoBacking.image_len) | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-o', 'backing_file=%s' % backing_img, '-F', 'raw', 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) | |
| try: | |
| os.remove(target_backing_img) | |
| except: | |
| pass | |
| os.remove(target_img) | |
| def test_complete(self): | |
| self.assert_no_active_block_jobs() | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| mode='existing', target=target_img) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_cancel(self): | |
| self.assert_no_active_block_jobs() | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| mode='existing', target=target_img) | |
| self.wait_ready_and_cancel() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', test_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_large_cluster(self): | |
| self.assert_no_active_block_jobs() | |
| # qemu-img create fails if the image is not there | |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d' | |
| %(TestMirrorNoBacking.image_len), target_backing_img) | |
| qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' | |
| % (TestMirrorNoBacking.image_len, target_backing_img), | |
| '-F', iotests.imgfmt, target_img) | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| mode='existing', target=target_img) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| class TestMirrorResized(iotests.QMPTestCase): | |
| backing_len = 1 * 1024 * 1024 # MB | |
| image_len = 2 * 1024 * 1024 # MB | |
| def setUp(self): | |
| iotests.create_image(backing_img, TestMirrorResized.backing_len) | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) | |
| qemu_img('resize', test_img, '2M') | |
| 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) | |
| try: | |
| os.remove(target_img) | |
| except OSError: | |
| pass | |
| def test_complete_top(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='top', | |
| target=target_img) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_complete_full(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| target=target_img) | |
| self.complete_and_wait() | |
| result = self.vm.qmp('query-block') | |
| self.assert_qmp(result, 'return[0]/inserted/file', target_img) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| class TestReadErrors(iotests.QMPTestCase): | |
| image_len = 2 * 1024 * 1024 # MB | |
| # this should be a multiple of twice the default granularity | |
| # so that we hit this offset first in state 1 | |
| MIRROR_GRANULARITY = 1024 * 1024 | |
| def create_blkdebug_file(self, name, event, errno): | |
| file = open(name, 'w') | |
| file.write(''' | |
| [inject-error] | |
| state = "1" | |
| event = "%s" | |
| errno = "%d" | |
| immediately = "off" | |
| once = "on" | |
| sector = "%d" | |
| [set-state] | |
| state = "1" | |
| event = "%s" | |
| new_state = "2" | |
| [set-state] | |
| state = "2" | |
| event = "%s" | |
| new_state = "1" | |
| ''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) | |
| file.close() | |
| def setUp(self): | |
| self.blkdebug_file = backing_img + ".blkdebug" | |
| iotests.create_image(backing_img, TestReadErrors.image_len) | |
| self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' | |
| % (self.blkdebug_file, backing_img), | |
| test_img) | |
| # Write something for tests that use sync='top' | |
| qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536), | |
| 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(target_img) | |
| os.remove(backing_img) | |
| os.remove(self.blkdebug_file) | |
| def test_report_read(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| target=target_img) | |
| completed = False | |
| error = False | |
| while not completed: | |
| for event in self.vm.get_qmp_events(wait=True): | |
| if event['event'] == 'BLOCK_JOB_ERROR': | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/operation', 'read') | |
| error = True | |
| elif event['event'] == 'BLOCK_JOB_READY': | |
| self.assertTrue(False, 'job completed unexpectedly') | |
| elif event['event'] == 'BLOCK_JOB_COMPLETED': | |
| self.assertTrue(error, 'job completed unexpectedly') | |
| self.assert_qmp(event, 'data/type', 'mirror') | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/error', 'Input/output error') | |
| completed = True | |
| elif event['event'] == 'JOB_STATUS_CHANGE': | |
| self.assert_qmp(event, 'data/id', 'drive0') | |
| self.assert_no_active_block_jobs() | |
| def test_ignore_read(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| target=target_img, on_source_error='ignore') | |
| event = self.vm.get_qmp_event(wait=True) | |
| while event['event'] == 'JOB_STATUS_CHANGE': | |
| self.assert_qmp(event, 'data/id', 'drive0') | |
| event = self.vm.get_qmp_event(wait=True) | |
| self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/operation', 'read') | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assertIn(result['return'][0]['status'], ['running', 'ready']) | |
| self.complete_and_wait() | |
| def test_large_cluster(self): | |
| self.assert_no_active_block_jobs() | |
| # Test COW into the target image. The first half of the | |
| # cluster at MIRROR_GRANULARITY has to be copied from | |
| # backing_img, even though sync='top'. | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-ocluster_size=131072,backing_file=%s' %(backing_img), | |
| '-F', 'raw', target_img) | |
| self.vm.cmd('drive-mirror', device='drive0', sync='top', | |
| on_source_error='ignore', | |
| mode='existing', target=target_img) | |
| event = self.vm.get_qmp_event(wait=True) | |
| while event['event'] == 'JOB_STATUS_CHANGE': | |
| self.assert_qmp(event, 'data/id', 'drive0') | |
| event = self.vm.get_qmp_event(wait=True) | |
| self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/operation', 'read') | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assertIn(result['return'][0]['status'], ['running', 'ready']) | |
| self.complete_and_wait() | |
| self.vm.shutdown() | |
| # Detach blkdebug to compare images successfully | |
| qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img, | |
| '-F', 'raw', test_img) | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_stop_read(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| target=target_img, on_source_error='stop') | |
| error = False | |
| ready = False | |
| while not ready: | |
| for event in self.vm.get_qmp_events(wait=True): | |
| if event['event'] == 'BLOCK_JOB_ERROR': | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/operation', 'read') | |
| if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused': | |
| self.vm.events_wait([( | |
| 'JOB_STATUS_CHANGE', | |
| {'data': {'id': 'drive0', 'status': 'paused'}} | |
| )]) | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assert_qmp(result, 'return[0]/status', 'paused') | |
| self.assert_qmp(result, 'return[0]/io-status', 'failed') | |
| self.vm.cmd('block-job-resume', device='drive0') | |
| error = True | |
| elif event['event'] == 'BLOCK_JOB_READY': | |
| self.assertTrue(error, 'job completed unexpectedly') | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| ready = True | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assert_qmp(result, 'return[0]/status', 'ready') | |
| self.assert_qmp(result, 'return[0]/io-status', 'ok') | |
| self.complete_and_wait(wait_ready=False) | |
| self.assert_no_active_block_jobs() | |
| class TestWriteErrors(iotests.QMPTestCase): | |
| image_len = 2 * 1024 * 1024 # MB | |
| # this should be a multiple of twice the default granularity | |
| # so that we hit this offset first in state 1 | |
| MIRROR_GRANULARITY = 1024 * 1024 | |
| def create_blkdebug_file(self, name, event, errno): | |
| file = open(name, 'w') | |
| file.write(''' | |
| [inject-error] | |
| state = "1" | |
| event = "%s" | |
| errno = "%d" | |
| immediately = "off" | |
| once = "on" | |
| sector = "%d" | |
| [set-state] | |
| state = "1" | |
| event = "%s" | |
| new_state = "2" | |
| [set-state] | |
| state = "2" | |
| event = "%s" | |
| new_state = "1" | |
| ''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) | |
| file.close() | |
| def setUp(self): | |
| self.blkdebug_file = target_img + ".blkdebug" | |
| iotests.create_image(backing_img, TestWriteErrors.image_len) | |
| self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5) | |
| qemu_img('create', '-f', iotests.imgfmt, | |
| '-obacking_file=%s' %(backing_img), '-F', 'raw', test_img) | |
| self.vm = iotests.VM().add_drive(test_img) | |
| self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img) | |
| qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_img) | |
| self.vm.launch() | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| os.remove(test_img) | |
| os.remove(target_img) | |
| os.remove(backing_img) | |
| os.remove(self.blkdebug_file) | |
| def test_report_write(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| mode='existing', target=self.target_img) | |
| completed = False | |
| error = False | |
| while not completed: | |
| for event in self.vm.get_qmp_events(wait=True): | |
| if event['event'] == 'BLOCK_JOB_ERROR': | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/operation', 'write') | |
| error = True | |
| elif event['event'] == 'BLOCK_JOB_READY': | |
| self.assertTrue(False, 'job completed unexpectedly') | |
| elif event['event'] == 'BLOCK_JOB_COMPLETED': | |
| self.assertTrue(error, 'job completed unexpectedly') | |
| self.assert_qmp(event, 'data/type', 'mirror') | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/error', 'Input/output error') | |
| completed = True | |
| self.assert_no_active_block_jobs() | |
| def test_ignore_write(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| mode='existing', target=self.target_img, | |
| on_target_error='ignore') | |
| event = self.vm.event_wait(name='BLOCK_JOB_ERROR') | |
| self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/operation', 'write') | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assertIn(result['return'][0]['status'], ['running', 'ready']) | |
| self.complete_and_wait() | |
| def test_stop_write(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| mode='existing', target=self.target_img, | |
| on_target_error='stop') | |
| error = False | |
| ready = False | |
| while not ready: | |
| for event in self.vm.get_qmp_events(wait=True): | |
| if event['event'] == 'BLOCK_JOB_ERROR': | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| self.assert_qmp(event, 'data/operation', 'write') | |
| if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused': | |
| self.vm.events_wait([( | |
| 'JOB_STATUS_CHANGE', | |
| {'data': {'id': 'drive0', 'status': 'paused'}} | |
| )]) | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assert_qmp(result, 'return[0]/status', 'paused') | |
| self.assert_qmp(result, 'return[0]/io-status', 'failed') | |
| self.vm.cmd('block-job-resume', device='drive0') | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assertIn(result['return'][0]['status'], ['running', 'ready']) | |
| self.assert_qmp(result, 'return[0]/io-status', 'ok') | |
| error = True | |
| elif event['event'] == 'BLOCK_JOB_READY': | |
| self.assertTrue(error, 'job completed unexpectedly') | |
| self.assert_qmp(event, 'data/device', 'drive0') | |
| ready = True | |
| self.complete_and_wait(wait_ready=False) | |
| self.assert_no_active_block_jobs() | |
| class TestSetSpeed(iotests.QMPTestCase): | |
| 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, '-F', 'raw', 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) | |
| os.remove(target_img) | |
| def test_set_speed(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| target=target_img) | |
| # 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) | |
| self.vm.cmd('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) | |
| # 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.wait_ready_and_cancel() | |
| # Check setting speed in drive-mirror works | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| target=target_img, speed=4*1024*1024) | |
| 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.wait_ready_and_cancel() | |
| def test_set_speed_invalid(self): | |
| self.assert_no_active_block_jobs() | |
| result = self.vm.qmp('drive-mirror', device='drive0', sync='full', | |
| target=target_img, speed=-1) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', sync='full', | |
| target=target_img) | |
| result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| self.wait_ready_and_cancel() | |
| class TestUnbackedSource(iotests.QMPTestCase): | |
| image_len = 2 * 1024 * 1024 # MB | |
| def setUp(self): | |
| qemu_img('create', '-f', iotests.imgfmt, test_img, | |
| str(TestUnbackedSource.image_len)) | |
| self.vm = iotests.VM() | |
| self.vm.launch() | |
| self.vm.cmd('blockdev-add', node_name='drive0', | |
| driver=iotests.imgfmt, | |
| file={ | |
| 'driver': 'file', | |
| 'filename': test_img, | |
| }) | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| os.remove(test_img) | |
| os.remove(target_img) | |
| def test_absolute_paths_full(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', | |
| sync='full', target=target_img, | |
| mode='absolute-paths') | |
| self.complete_and_wait() | |
| self.assert_no_active_block_jobs() | |
| def test_absolute_paths_top(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', | |
| sync='top', target=target_img, | |
| mode='absolute-paths') | |
| self.complete_and_wait() | |
| self.assert_no_active_block_jobs() | |
| def test_absolute_paths_none(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', | |
| sync='none', target=target_img, | |
| mode='absolute-paths') | |
| self.complete_and_wait() | |
| self.assert_no_active_block_jobs() | |
| def test_existing_full(self): | |
| qemu_img('create', '-f', iotests.imgfmt, target_img, | |
| str(self.image_len)) | |
| qemu_io('-c', 'write -P 42 0 64k', target_img) | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', | |
| sync='full', target=target_img, mode='existing') | |
| self.complete_and_wait() | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('blockdev-del', node_name='drive0') | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| def test_blockdev_full(self): | |
| qemu_img('create', '-f', iotests.imgfmt, target_img, | |
| str(self.image_len)) | |
| qemu_io('-c', 'write -P 42 0 64k', target_img) | |
| self.vm.cmd('blockdev-add', node_name='target', | |
| driver=iotests.imgfmt, | |
| file={ | |
| 'driver': 'file', | |
| 'filename': target_img, | |
| }) | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('blockdev-mirror', job_id='drive0', device='drive0', | |
| sync='full', target='target') | |
| self.complete_and_wait() | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('blockdev-del', node_name='drive0') | |
| self.vm.cmd('blockdev-del', node_name='target') | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| class TestGranularity(iotests.QMPTestCase): | |
| image_len = 10 * 1024 * 1024 # MB | |
| def setUp(self): | |
| qemu_img('create', '-f', iotests.imgfmt, test_img, | |
| str(TestGranularity.image_len)) | |
| qemu_io('-c', 'write 0 %d' % (self.image_len), | |
| test_img) | |
| self.vm = iotests.VM().add_drive(test_img) | |
| self.vm.launch() | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(test_img, target_img), | |
| 'target image does not match source after mirroring') | |
| os.remove(test_img) | |
| os.remove(target_img) | |
| def test_granularity(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('drive-mirror', device='drive0', | |
| sync='full', target=target_img, | |
| mode='absolute-paths', granularity=8192) | |
| event = self.vm.get_qmp_event(wait=60.0) | |
| while event['event'] == 'JOB_STATUS_CHANGE': | |
| self.assert_qmp(event, 'data/id', 'drive0') | |
| event = self.vm.get_qmp_event(wait=60.0) | |
| # Failures will manifest as COMPLETED/ERROR. | |
| self.assert_qmp(event, 'event', 'BLOCK_JOB_READY') | |
| self.complete_and_wait(drive='drive0', wait_ready=False) | |
| self.assert_no_active_block_jobs() | |
| class TestRepairQuorum(iotests.QMPTestCase): | |
| """ This class test quorum file repair using drive-mirror. | |
| It's mostly a fork of TestSingleDrive """ | |
| image_len = 1 * 1024 * 1024 # MB | |
| IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ] | |
| @iotests.skip_if_unsupported(['quorum']) | |
| def setUp(self): | |
| self.vm = iotests.VM() | |
| if iotests.qemu_default_machine == 'pc': | |
| self.vm.add_drive(None, 'media=cdrom', 'ide') | |
| # Add each individual quorum images | |
| for i in self.IMAGES: | |
| qemu_img('create', '-f', iotests.imgfmt, i, | |
| str(self.image_len)) | |
| # Assign a node name to each quorum image in order to manipulate | |
| # them | |
| opts = "node-name=img%i" % self.IMAGES.index(i) | |
| opts += ',driver=%s' % iotests.imgfmt | |
| opts += ',file.driver=file' | |
| opts += ',file.filename=%s' % i | |
| self.vm = self.vm.add_blockdev(opts) | |
| self.vm.launch() | |
| #assemble the quorum block device from the individual files | |
| args = { "driver": "quorum", "node-name": "quorum0", | |
| "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } | |
| self.vm.cmd("blockdev-add", args) | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file, | |
| nbd_sock_path ]: | |
| # Do a try/except because the test may have deleted some images | |
| try: | |
| os.remove(i) | |
| except OSError: | |
| pass | |
| def test_complete(self): | |
| self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name="repair0", replaces="img1", | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.complete_and_wait(drive="job0") | |
| self.assert_has_block_node("repair0", quorum_repair_img) | |
| self.vm.assert_block_path('quorum0', '/children.1', 'repair0') | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), | |
| 'target image does not match source after mirroring') | |
| def test_cancel(self): | |
| self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name="repair0", replaces="img1", | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.cancel_and_wait(drive="job0", force=True) | |
| # here we check that the last registered quorum file has not been | |
| # swapped out and unref | |
| self.assert_has_block_node(None, quorum_img3) | |
| def test_cancel_after_ready(self): | |
| self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name="repair0", replaces="img1", | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.wait_ready_and_cancel(drive="job0") | |
| # here we check that the last registered quorum file has not been | |
| # swapped out and unref | |
| self.assert_has_block_node(None, quorum_img3) | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), | |
| 'target image does not match source after mirroring') | |
| def test_pause(self): | |
| self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name="repair0", replaces="img1", | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.pause_job('job0') | |
| result = self.vm.qmp('query-block-jobs') | |
| offset = self.dictpath(result, 'return[0]/offset') | |
| time.sleep(0.5) | |
| result = self.vm.qmp('query-block-jobs') | |
| self.assert_qmp(result, 'return[0]/offset', offset) | |
| self.vm.cmd('block-job-resume', device='job0') | |
| self.complete_and_wait(drive="job0") | |
| self.vm.shutdown() | |
| self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), | |
| 'target image does not match source after mirroring') | |
| def test_medium_not_found(self): | |
| if iotests.qemu_default_machine != 'pc': | |
| return | |
| result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM | |
| sync='full', | |
| node_name='repair0', | |
| replaces='img1', | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_image_not_found(self): | |
| result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name='repair0', replaces='img1', | |
| mode='existing', target=quorum_repair_img, | |
| format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_device_not_found(self): | |
| result = self.vm.qmp('drive-mirror', job_id='job0', | |
| device='nonexistent', sync='full', | |
| node_name='repair0', | |
| replaces='img1', | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_wrong_sync_mode(self): | |
| result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0', | |
| node_name='repair0', | |
| replaces='img1', | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_no_node_name(self): | |
| result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', replaces='img1', | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_nonexistent_replaces(self): | |
| result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name='repair0', replaces='img77', | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_after_a_quorum_snapshot(self): | |
| self.vm.cmd('blockdev-snapshot-sync', node_name='img1', | |
| snapshot_file=quorum_snapshot_file, | |
| snapshot_node_name="snap1") | |
| result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name='repair0', replaces="img1", | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', | |
| sync='full', node_name='repair0', replaces="snap1", | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.complete_and_wait('job0') | |
| self.assert_has_block_node("repair0", quorum_repair_img) | |
| self.vm.assert_block_path('quorum0', '/children.1', 'repair0') | |
| def test_with_other_parent(self): | |
| """ | |
| Check that we cannot replace a Quorum child when it has other | |
| parents. | |
| """ | |
| self.vm.cmd('nbd-server-start', | |
| addr={ | |
| 'type': 'unix', | |
| 'data': {'path': nbd_sock_path} | |
| }) | |
| self.vm.cmd('nbd-server-add', device='img1') | |
| result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', | |
| sync='full', node_name='repair0', replaces='img1', | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.assert_qmp(result, 'error/desc', | |
| "Cannot replace 'img1' by a node mirrored from " | |
| "'quorum0', because it cannot be guaranteed that doing " | |
| "so would not lead to an abrupt change of visible data") | |
| def test_with_other_parents_after_mirror_start(self): | |
| """ | |
| The same as test_with_other_parent(), but add the NBD server | |
| only when the mirror job is already running. | |
| """ | |
| self.vm.cmd('nbd-server-start', | |
| addr={ | |
| 'type': 'unix', | |
| 'data': {'path': nbd_sock_path} | |
| }) | |
| self.vm.cmd('drive-mirror', job_id='mirror', device='quorum0', | |
| sync='full', node_name='repair0', replaces='img1', | |
| target=quorum_repair_img, format=iotests.imgfmt) | |
| self.vm.cmd('nbd-server-add', device='img1') | |
| # The full error message goes to stderr, we will check it later | |
| self.complete_and_wait('mirror', | |
| completion_error='Operation not permitted') | |
| # Should not have been replaced | |
| self.vm.assert_block_path('quorum0', '/children.1', 'img1') | |
| # Check the full error message now | |
| self.vm.shutdown() | |
| log = self.vm.get_log() | |
| log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log) | |
| log = re.sub(r'^Formatting.*\n', '', log) | |
| log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log) | |
| log = re.sub(r'^%s: ' % os.path.basename(iotests.qemu_prog), '', log) | |
| self.assertEqual(log, | |
| "Can no longer replace 'img1' by 'repair0', because " + | |
| "it can no longer be guaranteed that doing so would " + | |
| "not lead to an abrupt change of visible data") | |
| # Test mirroring with a source that does not have any parents (not even a | |
| # BlockBackend) | |
| class TestOrphanedSource(iotests.QMPTestCase): | |
| def setUp(self): | |
| blk0 = { 'node-name': 'src', | |
| 'driver': 'null-co' } | |
| blk1 = { 'node-name': 'dest', | |
| 'driver': 'null-co' } | |
| blk2 = { 'node-name': 'dest-ro', | |
| 'driver': 'null-co', | |
| 'read-only': 'on' } | |
| self.vm = iotests.VM() | |
| self.vm.add_blockdev(self.vm.qmp_to_opts(blk0)) | |
| self.vm.add_blockdev(self.vm.qmp_to_opts(blk1)) | |
| self.vm.add_blockdev(self.vm.qmp_to_opts(blk2)) | |
| self.vm.launch() | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| def test_no_job_id(self): | |
| self.assert_no_active_block_jobs() | |
| result = self.vm.qmp('blockdev-mirror', device='src', sync='full', | |
| target='dest') | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_success(self): | |
| self.assert_no_active_block_jobs() | |
| self.vm.cmd('blockdev-mirror', job_id='job', device='src', | |
| sync='full', target='dest') | |
| self.complete_and_wait('job') | |
| def test_failing_permissions(self): | |
| self.assert_no_active_block_jobs() | |
| result = self.vm.qmp('blockdev-mirror', device='src', sync='full', | |
| target='dest-ro') | |
| self.assert_qmp(result, 'error/class', 'GenericError') | |
| def test_failing_permission_in_complete(self): | |
| self.assert_no_active_block_jobs() | |
| # Unshare consistent-read on the target | |
| # (The mirror job does not care) | |
| self.vm.cmd('blockdev-add', | |
| driver='blkdebug', | |
| node_name='dest-perm', | |
| image='dest', | |
| unshare_child_perms=['consistent-read']) | |
| self.vm.cmd('blockdev-mirror', job_id='job', device='src', | |
| sync='full', target='dest', | |
| filter_node_name='mirror-filter') | |
| # Require consistent-read on the source | |
| # (We can only add this node once the job has started, or it | |
| # will complain that it does not want to run on non-root nodes) | |
| self.vm.cmd('blockdev-add', | |
| driver='blkdebug', | |
| node_name='src-perm', | |
| image='src', | |
| take_child_perms=['consistent-read']) | |
| # While completing, mirror will attempt to replace src by | |
| # dest, which must fail because src-perm requires | |
| # consistent-read but dest-perm does not share it; thus | |
| # aborting the job when it is supposed to complete | |
| self.complete_and_wait('job', | |
| completion_error='Operation not permitted') | |
| # Assert that all of our nodes are still there (except for the | |
| # mirror filter, which should be gone despite the failure) | |
| nodes = self.vm.qmp('query-named-block-nodes')['return'] | |
| nodes = [node['node-name'] for node in nodes] | |
| for expect in ('src', 'src-perm', 'dest', 'dest-perm'): | |
| self.assertTrue(expect in nodes, '%s disappeared' % expect) | |
| self.assertFalse('mirror-filter' in nodes, | |
| 'Mirror filter node did not disappear') | |
| # Test cases for @replaces that do not necessarily involve Quorum | |
| class TestReplaces(iotests.QMPTestCase): | |
| # Each of these test cases needs their own block graph, so do not | |
| # create any nodes here | |
| def setUp(self): | |
| self.vm = iotests.VM() | |
| self.vm.launch() | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| for img in (test_img, target_img): | |
| try: | |
| os.remove(img) | |
| except OSError: | |
| pass | |
| @iotests.skip_if_unsupported(['copy-on-read']) | |
| def test_replace_filter(self): | |
| """ | |
| Check that we can replace filter nodes. | |
| """ | |
| self.vm.cmd('blockdev-add', { | |
| 'driver': 'copy-on-read', | |
| 'node-name': 'filter0', | |
| 'file': { | |
| 'driver': 'copy-on-read', | |
| 'node-name': 'filter1', | |
| 'file': { | |
| 'driver': 'null-co' | |
| } | |
| } | |
| }) | |
| self.vm.cmd('blockdev-add', | |
| node_name='target', driver='null-co') | |
| self.vm.cmd('blockdev-mirror', job_id='mirror', device='filter0', | |
| target='target', sync='full', replaces='filter1') | |
| self.complete_and_wait('mirror') | |
| self.vm.assert_block_path('filter0', '/file', 'target') | |
| # Tests for mirror with filters (and how the mirror filter behaves, as | |
| # an example for an implicit filter) | |
| class TestFilters(iotests.QMPTestCase): | |
| def setUp(self): | |
| qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') | |
| qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, | |
| '-F', iotests.imgfmt, test_img) | |
| qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, | |
| '-F', iotests.imgfmt, target_img) | |
| qemu_io('-c', 'write -P 1 0 512k', backing_img) | |
| qemu_io('-c', 'write -P 2 512k 512k', test_img) | |
| self.vm = iotests.VM().add_device('virtio-scsi,id=vio-scsi') | |
| self.vm.launch() | |
| self.vm.cmd('blockdev-add', { | |
| 'node-name': 'target', | |
| 'driver': iotests.imgfmt, | |
| 'file': { | |
| 'driver': 'file', | |
| 'filename': target_img | |
| }, | |
| 'backing': None | |
| }) | |
| self.filterless_chain = { | |
| 'node-name': 'source', | |
| 'driver': iotests.imgfmt, | |
| 'file': { | |
| 'driver': 'file', | |
| 'filename': test_img | |
| }, | |
| 'backing': { | |
| 'node-name': 'backing', | |
| 'driver': iotests.imgfmt, | |
| 'file': { | |
| 'driver': 'file', | |
| 'filename': backing_img | |
| } | |
| } | |
| } | |
| def tearDown(self): | |
| self.vm.shutdown() | |
| os.remove(test_img) | |
| os.remove(target_img) | |
| os.remove(backing_img) | |
| def test_cor(self): | |
| self.vm.cmd('blockdev-add', { | |
| 'node-name': 'filter', | |
| 'driver': 'copy-on-read', | |
| 'file': self.filterless_chain | |
| }) | |
| self.vm.cmd('blockdev-mirror', | |
| job_id='mirror', | |
| device='filter', | |
| target='target', | |
| sync='top') | |
| self.complete_and_wait('mirror') | |
| self.vm.qmp('blockdev-del', node_name='target') | |
| target_map = qemu_img_map(target_img) | |
| assert target_map[0]['start'] == 0 | |
| assert target_map[0]['length'] == 512 * 1024 | |
| assert target_map[0]['depth'] == 1 | |
| assert target_map[1]['start'] == 512 * 1024 | |
| assert target_map[1]['length'] == 512 * 1024 | |
| assert target_map[1]['depth'] == 0 | |
| def test_implicit_mirror_filter(self): | |
| self.vm.cmd('blockdev-add', self.filterless_chain) | |
| # We need this so we can query from above the mirror node | |
| self.vm.cmd('device_add', | |
| driver='scsi-hd', | |
| id='virtio', | |
| bus='vio-scsi.0', | |
| drive='source') | |
| self.vm.cmd('blockdev-mirror', | |
| job_id='mirror', | |
| device='source', | |
| target='target', | |
| sync='top') | |
| # The mirror filter is now an implicit node, so it should be | |
| # invisible when querying the backing chain | |
| blockdevs = self.vm.qmp('query-block')['return'] | |
| device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') | |
| assert device_info['inserted']['node-name'] == 'source' | |
| image_info = device_info['inserted']['image'] | |
| assert image_info['filename'] == test_img | |
| assert image_info['backing-image']['filename'] == backing_img | |
| self.complete_and_wait('mirror') | |
| def test_explicit_mirror_filter(self): | |
| # Same test as above, but this time we give the mirror filter | |
| # a node-name so it will not be invisible | |
| self.vm.cmd('blockdev-add', self.filterless_chain) | |
| # We need this so we can query from above the mirror node | |
| self.vm.cmd('device_add', | |
| driver='scsi-hd', | |
| id='virtio', | |
| bus='vio-scsi.0', | |
| drive='source') | |
| self.vm.cmd('blockdev-mirror', | |
| job_id='mirror', | |
| device='source', | |
| target='target', | |
| sync='top', | |
| filter_node_name='mirror-filter') | |
| # With a node-name given to it, the mirror filter should now | |
| # be visible | |
| blockdevs = self.vm.qmp('query-block')['return'] | |
| device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') | |
| assert device_info['inserted']['node-name'] == 'mirror-filter' | |
| self.complete_and_wait('mirror') | |
| if __name__ == '__main__': | |
| iotests.main(supported_fmts=['qcow2', 'qed'], | |
| supported_protocols=['file'], | |
| supported_platforms=['linux', 'freebsd', 'netbsd', 'openbsd']) |