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Diffstat (limited to 'tests/qemu-iotests/030')
| -rwxr-xr-x | tests/qemu-iotests/030 | 987 |
1 files changed, 987 insertions, 0 deletions
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030 new file mode 100755 index 000000000..567bf1da6 --- /dev/null +++ b/tests/qemu-iotests/030 @@ -0,0 +1,987 @@ +#!/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), + qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), + '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), + qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', mid_img), + '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), + qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img), + '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), + qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), + '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) + + # 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), + 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), + qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), + 'image file map does not match backing file after streaming') + + def test_device_not_found(self): + result = self.vm.qmp('block-stream', device='nonexistent') + self.assert_qmp(result, 'error/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]), + qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]), + '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]), + qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]), + '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() + + # 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]), + qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), + '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]), + qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), + '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]), + qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), + '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]), + qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), + '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.assert_qmp(result, 'return[0]/paused', False) + 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') + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', True) + 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.assert_qmp(result, 'return[0]/paused', False) + 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 + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', True) + 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.assert_qmp(result, 'return[0]/paused', False) + 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']) |