[Qemu-devel] [PATCH 26/29] iotests: test qcow2 persistent dirty bitmap

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/160        | 87 +++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/160.out    |  5 +++
 tests/qemu-iotests/group      |  1 +
 tests/qemu-iotests/iotests.py |  6 +++
 4 files changed, 99 insertions(+)
 create mode 100755 tests/qemu-iotests/160
 create mode 100644 tests/qemu-iotests/160.out

diff --git a/tests/qemu-iotests/160 b/tests/qemu-iotests/160
new file mode 100755
index 0000000..a69799c
--- /dev/null
+++ b/tests/qemu-iotests/160
@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+#
+# Tests for persistent dirty bitmaps.
+#
+# Copyright: Vladimir Sementsov-Ogievskiy 2015-2016
+#
+# 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 os
+import iotests
+from iotests import qemu_img
+
+disk = os.path.join(iotests.test_dir, 'disk')
+disk_size = 0x40000000 # 1G
+
+# regions for qemu_io: (start, count) in bytes
+regions1 = ((0,        0x100000),
+            (0x200000, 0x100000))
+
+regions2 = ((0x10000000, 0x20000),
+            (0x39990000, 0x10000))
+
+class TestPersistentDirtyBitmap(iotests.QMPTestCase):
+
+    def setUp(self):
+        qemu_img('create', '-f', iotests.imgfmt, disk, str(disk_size))
+
+    def tearDown(self):
+        os.remove(disk)
+
+    def mkVm(self):
+        return iotests.VM().add_drive(disk)
+
+    def getMd5(self):
+        result = self.vm.qmp('query-block');
+        return result['return'][0]['dirty-bitmaps'][0]['md5']
+
+    def checkBitmap(self, md5):
+        result = self.vm.qmp('query-block');
+        self.assert_qmp(result, 'return[0]/dirty-bitmaps[0]/md5', md5);
+
+    def writeRegions(self, regions):
+        for r in regions:
+          self.vm.hmp_qemu_io('drive0',
+                              'write %d %d' % r)
+
+    def qmpAddBitmap(self):
+        self.vm.qmp('block-dirty-bitmap-add', node='drive0',
+                    name='bitmap0', persistent=True, autoload=True)
+
+    def test_persistent(self):
+        self.vm = self.mkVm()
+        self.vm.launch()
+        self.qmpAddBitmap()
+
+        self.writeRegions(regions1)
+        md5 = self.getMd5()
+
+        self.vm.shutdown()
+        self.vm = self.mkVm()
+        self.vm.launch()
+
+        self.checkBitmap(md5)
+        self.writeRegions(regions2)
+        md5 = self.getMd5()
+
+        self.vm.shutdown()
+        self.vm.launch()
+
+        self.checkBitmap(md5)
+
+        self.vm.shutdown()
+
+if __name__ == '__main__':
+    iotests.main(supported_fmts=['qcow2'])
diff --git a/tests/qemu-iotests/160.out b/tests/qemu-iotests/160.out
new file mode 100644
index 0000000..ae1213e
--- /dev/null
+++ b/tests/qemu-iotests/160.out
@@ -0,0 +1,5 @@
+.
+----------------------------------------------------------------------
+Ran 1 tests
+
+OK
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 3a3973e..b5cd18b 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -157,3 +157,4 @@
 155 rw auto
 156 rw auto quick
 157 auto
+160 rw auto quick
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index dbe0ee5..95da7a0 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -159,6 +159,12 @@ class VM(qtest.QEMUQtestMachine):
         self._num_drives += 1
         return self
 
+    def add_dirty_bitmap(self, name, node, create=False):
+        '''Add dirty bitmap parameter to VM cmd'''
+        self._args.append('-dirty-bitmap')
+        self._args.append('name=%s,node=%s,create=%s' % (name, node, 'on' if create else 'off'))
+        return self
+
     def pause_drive(self, drive, event=None):
         '''Pause drive r/w operations'''
         if not event:
-- 
1.8.3.1