This patch adds some tests on how commit copes with filter nodes.
Signed-off-by: Max Reitz <mre...@redhat.com>
---
tests/qemu-iotests/040 | 177 +++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/040.out | 4 +-
2 files changed, 179 insertions(+), 2 deletions(-)
diff --git a/tests/qemu-iotests/040 b/tests/qemu-iotests/040
index 32c82b4ec6..e7fa244738 100755
--- a/tests/qemu-iotests/040
+++ b/tests/qemu-iotests/040
@@ -713,6 +713,183 @@ class TestErrorHandling(iotests.QMPTestCase):
self.assertTrue(iotests.compare_images(mid_img, backing_img,
fmt2='raw'),
'target image does not match source after commit')
+class TestCommitWithFilters(iotests.QMPTestCase):
+ img0 = os.path.join(iotests.test_dir, '0.img')
+ img1 = os.path.join(iotests.test_dir, '1.img')
+ img2 = os.path.join(iotests.test_dir, '2.img')
+ img3 = os.path.join(iotests.test_dir, '3.img')
+
+ def do_test_io(self, read_or_write):
+ for index, pattern_file in enumerate(self.pattern_files):
+ result = qemu_io('-f', iotests.imgfmt,
+ '-c', '{} -P {} {}M 1M'.format(read_or_write,
+ index + 1, index),
+ pattern_file)
+ self.assertFalse('Pattern verification failed' in result)
+
+ def setUp(self):
+ qemu_img('create', '-f', iotests.imgfmt, self.img0, '64M')
+ qemu_img('create', '-f', iotests.imgfmt, self.img1, '64M')
+ qemu_img('create', '-f', iotests.imgfmt, self.img2, '64M')
+ qemu_img('create', '-f', iotests.imgfmt, self.img3, '64M')
+
+ # Distributions of the patterns in the files; this is checked
+ # by tearDown() and should be changed by the test cases as is
+ # necessary
+ self.pattern_files = [self.img0, self.img1, self.img2, self.img3]
+
+ self.do_test_io('write')
+
+ self.vm = iotests.VM()
+ self.vm.launch()
+
+ result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg')
+ self.assert_qmp(result, 'return', {})
+
+ result = self.vm.qmp('blockdev-add', **{
+ 'node-name': 'top-filter',
+ 'driver': 'throttle',
+ 'throttle-group': 'tg',
+ 'file': {
+ 'node-name': 'cow-3',
+ 'driver': iotests.imgfmt,
+ 'file': {
+ 'driver': 'file',
+ 'filename': self.img3
+ },
+ 'backing': {
+ 'node-name': 'cow-2',
+ 'driver': iotests.imgfmt,
+ 'file': {
+ 'driver': 'file',
+ 'filename': self.img2
+ },
+ 'backing': {
+ 'node-name': 'cow-1',
+ 'driver': iotests.imgfmt,
+ 'file': {
+ 'driver': 'file',
+ 'filename': self.img1
+ },
+ 'backing': {
+ 'node-name': 'bottom-filter',
+ 'driver': 'throttle',
+ 'throttle-group': 'tg',
+ 'file': {
+ 'node-name': 'cow-0',
+ 'driver': iotests.imgfmt,
+ 'file': {
+ 'driver': 'file',
+ 'filename': self.img0
+ }
+ }
+ }
+ }
+ }
+ }
+ })
+ self.assert_qmp(result, 'return', {})
+
+ def tearDown(self):
+ self.vm.shutdown()
+ self.do_test_io('read')
+
+ os.remove(self.img3)
+ os.remove(self.img2)
+ os.remove(self.img1)
+ os.remove(self.img0)
+
+ # Filters make for funny filenames, so we cannot just use
+ # self.imgX to get them
+ def get_filename(self, node):
+ return self.vm.node_info(node)['image']['filename']
+
+ def test_filterless_commit(self):
+ result = self.vm.qmp('block-commit',
+ job_id='commit',
+ device='top-filter',
+ top_node='cow-2',
+ base_node='cow-1')
+ self.assert_qmp(result, 'return', {})
+ self.wait_until_completed(drive='commit')
+
+ self.assertIsNotNone(self.vm.node_info('cow-3'))
+ self.assertIsNone(self.vm.node_info('cow-2'))
+ self.assertIsNotNone(self.vm.node_info('cow-1'))
+
+ # 2 has been comitted into 1
+ self.pattern_files[2] = self.img1
+
+ def test_commit_through_filter(self):
+ result = self.vm.qmp('block-commit',
+ job_id='commit',
+ device='top-filter',
+ top_node='cow-1',
+ base_node='cow-0')
+ self.assert_qmp(result, 'return', {})
+ self.wait_until_completed(drive='commit')
+
+ self.assertIsNotNone(self.vm.node_info('cow-2'))
+ self.assertIsNone(self.vm.node_info('cow-1'))
+ self.assertIsNone(self.vm.node_info('bottom-filter'))
+ self.assertIsNotNone(self.vm.node_info('cow-0'))
+
+ # 1 has been comitted into 0
+ self.pattern_files[1] = self.img0
+
+ def test_filtered_active_commit_with_filter(self):
+ # Add a device, so the commit job finds a parent it can change
+ # to point to the base node (so we can test that top-filter is
+ # dropped from the graph)
+ result = self.vm.qmp('device_add', id='drv0', driver='virtio-blk',
+ drive='top-filter')
+ self.assert_qmp(result, 'return', {})
+
+ # Try to release our reference to top-filter; that should not
+ # work because drv0 uses it
+ result = self.vm.qmp('blockdev-del', node_name='top-filter')
+ self.assert_qmp(result, 'error/class', 'GenericError')
+ self.assert_qmp(result, 'error/desc', 'Node top-filter is in use')
+
+ result = self.vm.qmp('block-commit',
+ job_id='commit',
+ device='top-filter',
+ base_node='cow-2')
+ self.assert_qmp(result, 'return', {})
+ self.complete_and_wait(drive='commit')
+
+ # Try to release our reference to top-filter again
+ result = self.vm.qmp('blockdev-del', node_name='top-filter')
+ self.assert_qmp(result, 'return', {})
+
+ self.assertIsNone(self.vm.node_info('top-filter'))
+ self.assertIsNone(self.vm.node_info('cow-3'))
+ self.assertIsNotNone(self.vm.node_info('cow-2'))
+
+ # Check that drv0 is now connected to cow-2
+ blockdevs = self.vm.qmp('query-block')['return']
+ drv0 = next(dev for dev in blockdevs if '/drv0' in dev['qdev'])
+ self.assertEqual(drv0['inserted']['node-name'], 'cow-2')
+
+ # 3 has been comitted into 2
+ self.pattern_files[3] = self.img2
+
+ def test_filtered_active_commit_without_filter(self):
+ result = self.vm.qmp('block-commit',
+ job_id='commit',
+ device='top-filter',
+ top_node='cow-3',
+ base_node='cow-2')
+ self.assert_qmp(result, 'return', {})
+ self.complete_and_wait(drive='commit')
+
+ self.assertIsNotNone(self.vm.node_info('top-filter'))
+ self.assertIsNone(self.vm.node_info('cow-3'))
+ self.assertIsNotNone(self.vm.node_info('cow-2'))
+
+ # 3 has been comitted into 2
+ self.pattern_files[3] = self.img2
+
if __name__ == '__main__':
iotests.main(supported_fmts=['qcow2', 'qed'],
supported_protocols=['file'])
diff --git a/tests/qemu-iotests/040.out b/tests/qemu-iotests/040.out
index 6a917130b6..4823c113d5 100644
--- a/tests/qemu-iotests/040.out
+++ b/tests/qemu-iotests/040.out
@@ -1,5 +1,5 @@
-...........................................................
+...............................................................
----------------------------------------------------------------------
-Ran 59 tests
+Ran 63 tests
OK
--
2.26.2
