From: Andrey Shinkevich <andrey.shinkev...@virtuozzo.com>
The test case #310 is similar to #216 by Max Reitz. The difference is
that the test #310 involves a bottom node to the COR filter driver.
Signed-off-by: Andrey Shinkevich <andrey.shinkev...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
tests/qemu-iotests/310 | 114 +++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/310.out | 15 +++++
tests/qemu-iotests/group | 1 +
3 files changed, 130 insertions(+)
create mode 100755 tests/qemu-iotests/310
create mode 100644 tests/qemu-iotests/310.out
diff --git a/tests/qemu-iotests/310 b/tests/qemu-iotests/310
new file mode 100755
index 0000000000..c8b34cd887
--- /dev/null
+++ b/tests/qemu-iotests/310
@@ -0,0 +1,114 @@
+#!/usr/bin/env python3
+#
+# Copy-on-read tests using a COR filter with a bottom node
+#
+# Copyright (C) 2018 Red Hat, Inc.
+# Copyright (c) 2020 Virtuozzo International GmbH
+#
+# 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 iotests
+from iotests import log, qemu_img, qemu_io_silent
+
+# Need backing file support
+iotests.script_initialize(supported_fmts=['qcow2', 'qcow', 'qed',
'vmdk'],
+ supported_platforms=['linux'])
+
+log('')
+log('=== Copy-on-read across nodes ===')
+log('')
+
+# This test is similar to the 216 one by Max Reitz <mre...@redhat.com>
+# The difference is that this test case involves a bottom node to the
+# COR filter driver.
+
+with iotests.FilePath('base.img') as base_img_path, \
+ iotests.FilePath('mid.img') as mid_img_path, \
+ iotests.FilePath('top.img') as top_img_path, \
+ iotests.VM() as vm:
+
+ log('--- Setting up images ---')
+ log('')
+
+ assert qemu_img('create', '-f', iotests.imgfmt, base_img_path,
'64M') == 0
+ assert qemu_io_silent(base_img_path, '-c', 'write -P 1 0M 1M') == 0
+ assert qemu_io_silent(base_img_path, '-c', 'write -P 1 3M 1M') == 0
+ assert qemu_img('create', '-f', iotests.imgfmt, '-b',
base_img_path,
+ '-F', iotests.imgfmt, mid_img_path) == 0
+ assert qemu_io_silent(mid_img_path, '-c', 'write -P 3 2M 1M') == 0
+ assert qemu_io_silent(mid_img_path, '-c', 'write -P 3 4M 1M') == 0
+ assert qemu_img('create', '-f', iotests.imgfmt, '-b', mid_img_path,
+ '-F', iotests.imgfmt, top_img_path) == 0
+ assert qemu_io_silent(top_img_path, '-c', 'write -P 2 1M 1M') == 0
+
+# 0 1 2 3 4
+# top 2
+# mid 3 3
+# base 1 1
+
+ log('Done')
+
+ log('')
+ log('--- Doing COR ---')
+ log('')
+
+ vm.launch()
+
+ log(vm.qmp('blockdev-add',
+ node_name='node0',
+ driver='copy-on-read',
+ bottom='node2',
+ file={
+ 'driver': iotests.imgfmt,
+ 'file': {
+ 'driver': 'file',
+ 'filename': top_img_path
+ },
+ 'backing': {
+ 'node-name': 'node2',
+ 'driver': iotests.imgfmt,
+ 'file': {
+ 'driver': 'file',
+ 'filename': mid_img_path
+ },
+ 'backing': {
+ 'driver': iotests.imgfmt,
+ 'file': {
+ 'driver': 'file',
+ 'filename': base_img_path
+ }
+ },
+ }
+ }))
+
+ # Trigger COR
+ log(vm.qmp('human-monitor-command',
+ command_line='qemu-io node0 "read 0 5M"'))
+
+ vm.shutdown()
+
+ log('')
+ log('--- Checking COR result ---')
+ log('')
+
+ assert qemu_io_silent(base_img_path, '-c', 'discard 0 4M') == 0
+ assert qemu_io_silent(mid_img_path, '-c', 'discard 0M 5M') == 0
