| #!/usr/bin/env python3 |
| # group: rw backing |
| # |
| # 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 time |
| import os |
| import iotests |
| import unittest |
| from iotests import qemu_img, qemu_io |
| |
| 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 TestSingleDrive(iotests.QMPTestCase): |
| image_len = 1 * 1024 * 1024 # MB |
| |
| def setUp(self): |
| iotests.create_image(backing_img, TestSingleDrive.image_len) |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=%s' % backing_img, |
| '-F', 'raw', mid_img) |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=%s' % mid_img, |
| '-F', iotests.imgfmt, test_img) |
| qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 512', backing_img) |
| qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 524288 512', mid_img) |
| self.vm = iotests.VM().add_drive("blkdebug::" + test_img, |
| "backing.node-name=mid," + |
| "backing.backing.node-name=base") |
| 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_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed() |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| self.assertEqual( |
| qemu_io('-f', 'raw', '-c', 'map', backing_img).stdout, |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img).stdout, |
| 'image file map does not match backing file after streaming') |
| |
| def test_stream_intermediate(self): |
| self.assert_no_active_block_jobs() |
| |
| self.assertNotEqual( |
| qemu_io('-f', 'raw', '-rU', '-c', 'map', backing_img).stdout, |
| qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', mid_img).stdout, |
| 'image file map matches backing file before streaming') |
| |
| result = self.vm.qmp('block-stream', device='mid', job_id='stream-mid') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed(drive='stream-mid') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| self.assertEqual( |
| qemu_io('-f', 'raw', '-c', 'map', backing_img).stdout, |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img).stdout, |
| 'image file map does not match backing file after streaming') |
| |
| def test_stream_pause(self): |
| self.assert_no_active_block_jobs() |
| |
| self.vm.pause_drive('drive0') |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.pause_job('drive0', wait=False) |
| self.vm.resume_drive('drive0') |
| self.pause_wait('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) |
| |
| result = self.vm.qmp('block-job-resume', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed() |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| self.assertEqual( |
| qemu_io('-f', 'raw', '-c', 'map', backing_img).stdout, |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img).stdout, |
| 'image file map does not match backing file after streaming') |
| |
| def test_stream_no_op(self): |
| self.assert_no_active_block_jobs() |
| |
| # The image map is empty before the operation |
| empty_map = qemu_io( |
| '-f', iotests.imgfmt, '-rU', '-c', 'map', test_img).stdout |
| |
| # This is a no-op: no data should ever be copied from the base image |
| result = self.vm.qmp('block-stream', device='drive0', base=mid_img) |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed() |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| self.assertEqual( |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img).stdout, |
| empty_map, 'image file map changed after a no-op') |
| |
| def test_stream_partial(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0', base=backing_img) |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed() |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| self.assertEqual( |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img).stdout, |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img).stdout, |
| '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/desc', |
| 'Cannot find device=\'nonexistent\' nor node-name=\'nonexistent\'') |
| |
| def test_job_id_missing(self): |
| result = self.vm.qmp('block-stream', device='mid') |
| self.assert_qmp(result, 'error/desc', "Invalid job ID ''") |
| |
| def test_read_only(self): |
| # Create a new file that we can attach (we need a read-only top) |
| with iotests.FilePath('ro-top.img') as ro_top_path: |
| qemu_img('create', '-f', iotests.imgfmt, ro_top_path, |
| str(self.image_len)) |
| |
| result = self.vm.qmp('blockdev-add', |
| node_name='ro-top', |
| driver=iotests.imgfmt, |
| read_only=True, |
| file={ |
| 'driver': 'file', |
| 'filename': ro_top_path, |
| 'read-only': True |
| }, |
| backing='mid') |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('block-stream', job_id='stream', |
| device='ro-top', base_node='base') |
| self.assert_qmp(result, 'error/desc', 'Block node is read-only') |
| |
| result = self.vm.qmp('blockdev-del', node_name='ro-top') |
| self.assert_qmp(result, 'return', {}) |
| |
| |
| class TestParallelOps(iotests.QMPTestCase): |
| num_ops = 4 # Number of parallel block-stream operations |
| num_imgs = num_ops * 2 + 1 |
| image_len = num_ops * 4 * 1024 * 1024 |
| imgs = [] |
| |
| def setUp(self): |
| opts = [] |
| self.imgs = [] |
| |
| # Initialize file names and command-line options |
| for i in range(self.num_imgs): |
| img_depth = self.num_imgs - i - 1 |
| opts.append("backing." * img_depth + "node-name=node%d" % i) |
| self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i)) |
| |
| # Create all images |
| iotests.create_image(self.imgs[0], self.image_len) |
| for i in range(1, self.num_imgs): |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=%s' % self.imgs[i-1], |
| '-F', 'raw' if i == 1 else iotests.imgfmt, self.imgs[i]) |
| |
| # Put data into the images we are copying data from |
| odd_img_indexes = [x for x in reversed(range(self.num_imgs)) if x % 2 == 1] |
| for i in range(len(odd_img_indexes)): |
| # Alternate between 2MB and 4MB. |
| # This way jobs will not finish in the same order they were created |
| num_mb = 2 + 2 * (i % 2) |
| qemu_io('-f', iotests.imgfmt, |
| '-c', 'write -P 0xFF %dM %dM' % (i * 4, num_mb), |
| self.imgs[odd_img_indexes[i]]) |
| |
| # Attach the drive to the VM |
| self.vm = iotests.VM() |
| self.vm.add_drive(self.imgs[-1], ','.join(opts)) |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| for img in self.imgs: |
| os.remove(img) |
| |
| # Test that it's possible to run several block-stream operations |
| # in parallel in the same snapshot chain |
| @unittest.skipIf(os.environ.get('QEMU_CHECK_BLOCK_AUTO'), 'disabled in CI') |
| def test_stream_parallel(self): |
| self.assert_no_active_block_jobs() |
| |
| # Check that the maps don't match before the streaming operations |
| for i in range(2, self.num_imgs, 2): |
| self.assertNotEqual( |
| qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]).stdout, |
| qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]).stdout, |
| 'image file map matches backing file before streaming') |
| |
| # Create all streaming jobs |
| pending_jobs = [] |
| for i in range(2, self.num_imgs, 2): |
| node_name = 'node%d' % i |
| job_id = 'stream-%s' % node_name |
| pending_jobs.append(job_id) |
| result = self.vm.qmp('block-stream', device=node_name, |
| job_id=job_id, bottom=f'node{i-1}', |
| speed=1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Do this in reverse: After unthrottling them, some jobs may finish |
| # before we have unthrottled all of them. This will drain their |
| # subgraph, and this will make jobs above them advance (despite those |
| # jobs on top being throttled). In the worst case, all jobs below the |
| # top one are finished before we can unthrottle it, and this makes it |
| # advance so far that it completes before we can unthrottle it - which |
| # results in an error. |
| # Starting from the top (i.e. in reverse) does not have this problem: |
| # When a job finishes, the ones below it are not advanced. |
| for job in reversed(pending_jobs): |
| result = self.vm.qmp('block-job-set-speed', device=job, speed=0) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Wait for all jobs to be finished. |
| while len(pending_jobs) > 0: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_COMPLETED': |
| job_id = self.dictpath(event, 'data/device') |
| self.assertTrue(job_id in pending_jobs) |
| self.assert_qmp_absent(event, 'data/error') |
| pending_jobs.remove(job_id) |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| # Check that all maps match now |
| for i in range(2, self.num_imgs, 2): |
| self.assertEqual( |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]).stdout, |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]).stdout, |
| 'image file map does not match backing file after streaming') |
| |
| # Test that it's not possible to perform two block-stream |
| # operations if there are nodes involved in both. |
| def test_overlapping_1(self): |
| self.assert_no_active_block_jobs() |
| |
| # Set a speed limit to make sure that this job blocks the rest |
| result = self.vm.qmp('block-stream', device='node4', |
| job_id='stream-node4', base=self.imgs[1], |
| filter_node_name='stream-filter', speed=1024*1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2]) |
| self.assert_qmp(result, 'error/desc', |
| "Node 'stream-filter' is busy: block device is in use by block job: stream") |
| |
| result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2]) |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node3' is busy: block device is in use by block job: stream") |
| |
| result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node4' is busy: block device is in use by block job: stream") |
| |
| # block-commit should also fail if it touches nodes used by the stream job |
| result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'stream-filter' is busy: block device is in use by block job: stream") |
| |
| result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node3' is busy: block device is in use by block job: stream") |
| |
| # This fails because it needs to modify the backing string in node2, which is blocked |
| result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node2' is busy: block device is in use by block job: stream") |
| |
| result = self.vm.qmp('block-job-set-speed', device='stream-node4', speed=0) |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed(drive='stream-node4') |
| self.assert_no_active_block_jobs() |
| |
| # Similar to test_overlapping_1, but with block-commit |
| # blocking the other jobs |
| def test_overlapping_2(self): |
| self.assertLessEqual(9, self.num_imgs) |
| self.assert_no_active_block_jobs() |
| |
| # Set a speed limit to make sure that this job blocks the rest |
| result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node3' is busy: block device is in use by block job: commit") |
| |
| result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node5' is busy: block device is in use by block job: commit") |
| |
| result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node4' is busy: block device is in use by block job: commit") |
| |
| result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node5' is busy: block device is in use by block job: commit") |
| |
| # This fails because block-commit currently blocks the active layer even if it's not used |
| result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'drive0' is busy: block device is in use by block job: commit") |
| |
| result = self.vm.qmp('block-job-set-speed', device='commit-node3', speed=0) |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed(drive='commit-node3') |
| |
| # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter. |
| # Internally this uses a mirror block job, hence the separate test case. |
| def test_overlapping_3(self): |
| self.assertLessEqual(8, self.num_imgs) |
| self.assert_no_active_block_jobs() |
| |
| # Set a speed limit to make sure that this job blocks the rest |
| result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node5' is busy: block device is in use by block job: commit") |
| |
| result = self.vm.qmp('block-job-set-speed', device='commit-drive0', speed=0) |
| self.assert_qmp(result, 'return', {}) |
| |
| event = self.vm.event_wait(name='BLOCK_JOB_READY') |
| self.assert_qmp(event, 'data/device', 'commit-drive0') |
| self.assert_qmp(event, 'data/type', 'commit') |
| self.assert_qmp_absent(event, 'data/error') |
| |
| result = self.vm.qmp('block-job-complete', device='commit-drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed(drive='commit-drive0') |
| |
| # In this case the base node of the stream job is the same as the |
| # top node of commit job. Since this results in the commit filter |
| # node being part of the stream chain, this is not allowed. |
| def test_overlapping_4(self): |
| self.assert_no_active_block_jobs() |
| |
| # Commit from node2 into node0 |
| result = self.vm.qmp('block-commit', device='drive0', |
| top=self.imgs[2], base=self.imgs[0], |
| filter_node_name='commit-filter', speed=1024*1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Stream from node2 into node4 |
| result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='node4') |
| self.assert_qmp(result, 'error/desc', |
| "Cannot freeze 'backing' link to 'commit-filter'") |
| |
| result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed() |
| self.assert_no_active_block_jobs() |
| |
| # In this case the base node of the stream job is the commit job's |
| # filter node. stream does not have a real dependency on its base |
| # node, so even though commit removes it when it is done, there is |
| # no conflict. |
| def test_overlapping_5(self): |
| self.assert_no_active_block_jobs() |
| |
| # Commit from node2 into node0 |
| result = self.vm.qmp('block-commit', device='drive0', |
| top_node='node2', base_node='node0', |
| filter_node_name='commit-filter', speed=1024*1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Stream from node2 into node4 |
| result = self.vm.qmp('block-stream', device='node4', |
| base_node='commit-filter', job_id='node4') |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) |
| self.assert_qmp(result, 'return', {}) |
| |
| self.vm.run_job(job='drive0', auto_dismiss=True) |
| self.vm.run_job(job='node4', auto_dismiss=True) |
| self.assert_no_active_block_jobs() |
| |
| # Assert that node0 is now the backing node of node4 |
| result = self.vm.qmp('query-named-block-nodes') |
| node4 = next(node for node in result['return'] if node['node-name'] == 'node4') |
| self.assertEqual(node4['image']['backing-image']['filename'], self.imgs[0]) |
| |
| # Test a block-stream and a block-commit job in parallel |
| # Here the stream job is supposed to finish quickly in order to reproduce |
| # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507 |
| def test_stream_commit_1(self): |
| self.assertLessEqual(8, self.num_imgs) |
| self.assert_no_active_block_jobs() |
| |
| # Stream from node0 into node2 |
| result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2') |
| self.assert_qmp(result, 'return', {}) |
| |
| # Commit from the active layer into node3 |
| result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Wait for all jobs to be finished. |
| pending_jobs = ['node2', 'drive0'] |
| while len(pending_jobs) > 0: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_COMPLETED': |
| node_name = self.dictpath(event, 'data/device') |
| self.assertTrue(node_name in pending_jobs) |
| self.assert_qmp_absent(event, 'data/error') |
| pending_jobs.remove(node_name) |
| if event['event'] == 'BLOCK_JOB_READY': |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/type', 'commit') |
| self.assert_qmp_absent(event, 'data/error') |
| self.assertTrue('drive0' in pending_jobs) |
| self.vm.qmp('block-job-complete', device='drive0') |
| |
| self.assert_no_active_block_jobs() |
| |
| # This is similar to test_stream_commit_1 but both jobs are slowed |
| # down so they can run in parallel for a little while. |
| def test_stream_commit_2(self): |
| self.assertLessEqual(8, self.num_imgs) |
| self.assert_no_active_block_jobs() |
| |
| # Stream from node0 into node4 |
| result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Commit from the active layer into node5 |
| result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024) |
| self.assert_qmp(result, 'return', {}) |
| |
| for job in ['drive0', 'node4']: |
| result = self.vm.qmp('block-job-set-speed', device=job, speed=0) |
| self.assert_qmp(result, 'return', {}) |
| |
| # Wait for all jobs to be finished. |
| pending_jobs = ['node4', 'drive0'] |
| while len(pending_jobs) > 0: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_COMPLETED': |
| node_name = self.dictpath(event, 'data/device') |
| self.assertTrue(node_name in pending_jobs) |
| self.assert_qmp_absent(event, 'data/error') |
| pending_jobs.remove(node_name) |
| if event['event'] == 'BLOCK_JOB_READY': |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/type', 'commit') |
| self.assert_qmp_absent(event, 'data/error') |
| self.assertTrue('drive0' in pending_jobs) |
| self.vm.qmp('block-job-complete', device='drive0') |
| |
| self.assert_no_active_block_jobs() |
| |
| # Test the base_node parameter |
| def test_stream_base_node_name(self): |
| self.assert_no_active_block_jobs() |
| |
| self.assertNotEqual( |
| qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]).stdout, |
| qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]).stdout, |
| 'image file map matches backing file before streaming') |
| |
| # Error: the base node does not exist |
| result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') |
| self.assert_qmp(result, 'error/desc', |
| 'Cannot find device=\'\' nor node-name=\'none\'') |
| |
| # Error: the base node is not a backing file of the top node |
| result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node6' is not a backing image of 'node4'") |
| |
| # Error: the base node is the same as the top node |
| result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') |
| self.assert_qmp(result, 'error/desc', |
| "Node 'node4' is not a backing image of 'node4'") |
| |
| # Error: cannot specify 'base' and 'base-node' at the same time |
| result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') |
| self.assert_qmp(result, 'error/desc', |
| "'base' and 'base-node' cannot be specified at the same time") |
| |
| # Success: the base node is a backing file of the top node |
| result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed(drive='stream') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| self.assertEqual( |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]).stdout, |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]).stdout, |
| 'image file map matches backing file after streaming') |
| |
| class TestQuorum(iotests.QMPTestCase): |
| num_children = 3 |
| children = [] |
| backing = [] |
| |
| @iotests.skip_if_unsupported(['quorum']) |
| def setUp(self): |
| opts = ['driver=quorum', 'vote-threshold=2'] |
| |
| # Initialize file names and command-line options |
| for i in range(self.num_children): |
| child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) |
| backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) |
| self.children.append(child_img) |
| self.backing.append(backing_img) |
| qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') |
| qemu_io('-f', iotests.imgfmt, |
| '-c', 'write -P 0x55 0 1024', backing_img) |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=%s' % backing_img, |
| '-F', iotests.imgfmt, child_img) |
| opts.append("children.%d.file.filename=%s" % (i, child_img)) |
| opts.append("children.%d.node-name=node%d" % (i, i)) |
| |
| # Attach the drive to the VM |
| self.vm = iotests.VM() |
| self.vm.add_drive(path = None, opts = ','.join(opts)) |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| for img in self.children: |
| os.remove(img) |
| for img in self.backing: |
| os.remove(img) |
| |
| def test_stream_quorum(self): |
| self.assertNotEqual( |
| qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]).stdout, |
| qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]).stdout, |
| 'image file map matches backing file before streaming') |
| |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed(drive='stream-node0') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| self.assertEqual( |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]).stdout, |
| qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]).stdout, |
| 'image file map does not match backing file after streaming') |
| |
| class TestSmallerBackingFile(iotests.QMPTestCase): |
| backing_len = 1 * 1024 * 1024 # MB |
| image_len = 2 * backing_len |
| |
| def setUp(self): |
| iotests.create_image(backing_img, self.backing_len) |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=%s' % backing_img, |
| '-F', 'raw', test_img, str(self.image_len)) |
| self.vm = iotests.VM().add_drive(test_img) |
| self.vm.launch() |
| |
| # If this hangs, then you are missing a fix to complete streaming when the |
| # end of the backing file is reached. |
| def test_stream(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| self.wait_until_completed() |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| class TestErrors(iotests.QMPTestCase): |
| image_len = 2 * 1024 * 1024 # MB |
| |
| # this should match STREAM_BUFFER_SIZE/512 in block/stream.c |
| STREAM_BUFFER_SIZE = 512 * 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.STREAM_BUFFER_SIZE // 512, event, event)) |
| file.close() |
| |
| class TestEIO(TestErrors): |
| def setUp(self): |
| self.blkdebug_file = backing_img + ".blkdebug" |
| iotests.create_image(backing_img, TestErrors.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) |
| 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(self.blkdebug_file) |
| |
| def test_report(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| 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_COMPLETED': |
| self.assertTrue(error, 'job completed unexpectedly') |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/error', 'Input/output error') |
| self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| elif event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', 'drive0') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| def test_ignore(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') |
| self.assert_qmp(result, 'return', {}) |
| |
| error = False |
| completed = False |
| while not completed: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_ERROR': |
| error = True |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/operation', 'read') |
| result = self.vm.qmp('query-block-jobs') |
| if result == {'return': []}: |
| # Job finished too quickly |
| continue |
| self.assertIn(result['return'][0]['status'], |
| ['running', 'pending', 'aborting', 'concluded']) |
| elif event['event'] == 'BLOCK_JOB_COMPLETED': |
| self.assertTrue(error, 'job completed unexpectedly') |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/error', 'Input/output error') |
| self.assert_qmp(event, 'data/offset', self.image_len) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| elif event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', 'drive0') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| def test_stop(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0', on_error='stop') |
| self.assert_qmp(result, 'return', {}) |
| |
| error = False |
| completed = False |
| while not completed: |
| for event in self.vm.get_qmp_events(wait=True): |
| if event['event'] == 'BLOCK_JOB_ERROR': |
| error = True |
| 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]/offset', self.STREAM_BUFFER_SIZE) |
| self.assert_qmp(result, 'return[0]/io-status', 'failed') |
| |
| result = self.vm.qmp('block-job-resume', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('query-block-jobs') |
| if result == {'return': []}: |
| # Race; likely already finished. Check. |
| continue |
| self.assertIn(result['return'][0]['status'], |
| ['running', 'pending', 'aborting', 'concluded']) |
| self.assert_qmp(result, 'return[0]/io-status', 'ok') |
| elif event['event'] == 'BLOCK_JOB_COMPLETED': |
| self.assertTrue(error, 'job completed unexpectedly') |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp_absent(event, 'data/error') |
| self.assert_qmp(event, 'data/offset', self.image_len) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| elif event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', 'drive0') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| def test_enospc(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') |
| self.assert_qmp(result, 'return', {}) |
| |
| 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_COMPLETED': |
| self.assertTrue(error, 'job completed unexpectedly') |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp(event, 'data/error', 'Input/output error') |
| self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| elif event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', 'drive0') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| class TestENOSPC(TestErrors): |
| def setUp(self): |
| self.blkdebug_file = backing_img + ".blkdebug" |
| iotests.create_image(backing_img, TestErrors.image_len) |
| self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' |
| % (self.blkdebug_file, 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) |
| os.remove(self.blkdebug_file) |
| |
| def test_enospc(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') |
| self.assert_qmp(result, 'return', {}) |
| |
| error = False |
| completed = 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 |
| |
| 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]/offset', self.STREAM_BUFFER_SIZE) |
| self.assert_qmp(result, 'return[0]/io-status', 'nospace') |
| |
| result = self.vm.qmp('block-job-resume', device='drive0') |
| self.assert_qmp(result, 'return', {}) |
| |
| result = self.vm.qmp('query-block-jobs') |
| if result == {'return': []}: |
| # Race; likely already finished. Check. |
| continue |
| self.assertIn(result['return'][0]['status'], |
| ['running', 'pending', 'aborting', 'concluded']) |
| self.assert_qmp(result, 'return[0]/io-status', 'ok') |
| elif event['event'] == 'BLOCK_JOB_COMPLETED': |
| self.assertTrue(error, 'job completed unexpectedly') |
| self.assert_qmp(event, 'data/type', 'stream') |
| self.assert_qmp(event, 'data/device', 'drive0') |
| self.assert_qmp_absent(event, 'data/error') |
| self.assert_qmp(event, 'data/offset', self.image_len) |
| self.assert_qmp(event, 'data/len', self.image_len) |
| completed = True |
| elif event['event'] == 'JOB_STATUS_CHANGE': |
| self.assert_qmp(event, 'data/id', 'drive0') |
| |
| self.assert_no_active_block_jobs() |
| self.vm.shutdown() |
| |
| class TestStreamStop(iotests.QMPTestCase): |
| image_len = 8 * 1024 * 1024 * 1024 # GB |
| |
| def setUp(self): |
| qemu_img('create', backing_img, str(TestStreamStop.image_len)) |
| qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=%s' % backing_img, |
| '-F', 'raw', test_img) |
| qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) |
| self.vm = iotests.VM().add_drive("blkdebug::" + test_img) |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| os.remove(test_img) |
| os.remove(backing_img) |
| |
| def test_stream_stop(self): |
| self.assert_no_active_block_jobs() |
| |
| self.vm.pause_drive('drive0') |
| 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) |
| for e in events: |
| self.assert_qmp(e, 'event', 'JOB_STATUS_CHANGE') |
| self.assert_qmp(e, 'data/id', 'drive0') |
| |
| self.cancel_and_wait(resume=True) |
| |
| class TestSetSpeed(iotests.QMPTestCase): |
| image_len = 80 * 1024 * 1024 # MB |
| |
| def setUp(self): |
| qemu_img('create', backing_img, str(TestSetSpeed.image_len)) |
| qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) |
| qemu_img('create', '-f', iotests.imgfmt, |
| '-o', 'backing_file=%s' % backing_img, |
| '-F', 'raw', test_img) |
| qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) |
| self.vm = iotests.VM().add_drive('blkdebug::' + 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_block_jobs() |
| |
| 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', {}) |
| |
| self.wait_until_completed() |
| |
| self.assert_no_active_block_jobs() |
| |
| def test_set_speed(self): |
| self.assert_no_active_block_jobs() |
| |
| self.vm.pause_drive('drive0') |
| 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(resume=True) |
| self.vm.pause_drive('drive0') |
| |
| # 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(resume=True) |
| |
| def test_set_speed_invalid(self): |
| self.assert_no_active_block_jobs() |
| |
| result = self.vm.qmp('block-stream', device='drive0', speed=-1) |
| self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value") |
| |
| self.assert_no_active_block_jobs() |
| |
| self.vm.pause_drive('drive0') |
| 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/desc', "Parameter 'speed' expects a non-negative value") |
| |
| self.cancel_and_wait(resume=True) |
| |
| if __name__ == '__main__': |
| iotests.main(supported_fmts=['qcow2', 'qed'], |
| supported_protocols=['file']) |
