[Qemu-devel] [PATCH 8/8] iotests: test internal persistent dirty bitmap

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

From: Vladimir Sementsov-Ogievskiy <vsementsov@parallels.com>

The test performs several vm reloads with checking and updating dirty
bitmap.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/118        | 83 +++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/118.out    |  5 +++
 tests/qemu-iotests/group      |  1 +
 tests/qemu-iotests/iotests.py |  6 ++++
 4 files changed, 95 insertions(+)
 create mode 100755 tests/qemu-iotests/118
 create mode 100644 tests/qemu-iotests/118.out

diff --git a/tests/qemu-iotests/118 b/tests/qemu-iotests/118
new file mode 100755
index 0000000..f6e91aa
--- /dev/null
+++ b/tests/qemu-iotests/118
@@ -0,0 +1,83 @@
+#!/usr/bin/env python
+#
+# Tests for persistent dirty bitmaps.
+#
+# (C) Vladimir Sementsov-Ogievskiy 2015
+#
+# 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
+import time
+from iotests import qemu_img
+
+disk = os.path.join(iotests.test_dir, 'disk')
+
+size   = 0x40000000 # 1G
+sector_size = 512
+granularity = 0x10000
+regions1 = [
+    { 'start': 0,          'count': 0x100000 },
+    { 'start': 0x200000,   'count': 0x100000 }
+    ]
+regions2 = [
+    { 'start': 0x10000000, 'count': 0x20000  },
+    { 'start': 0x39990000, 'count': 0x10000  }
+    ]
+
+class TestDirtyBitmapMigration(iotests.QMPTestCase):
+
+    def setUp(self):
+        qemu_img('create', '-f', iotests.imgfmt, disk, str(size))
+        self.vm = iotests.VM().add_drive(disk)
+        self.vm.add_dirty_bitmap('bitmap', 'drive0')
+        self.vm.launch()
+
+    def tearDown(self):
+        self.vm.shutdown()
+        os.remove(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['start'], r['count']))
+
+    def test_persistent(self):
+        self.writeRegions(regions1)
+        md5 = self.getMd5()
+
+        self.vm.shutdown()
+        self.vm.launch()
+
+        self.checkBitmap(md5)
+        self.writeRegions(regions2)
+        md5 = self.getMd5()
+
+        self.vm.shutdown()
+        self.vm.launch()
+
+        self.checkBitmap(md5)
+
+
+if __name__ == '__main__':
+    iotests.main()
diff --git a/tests/qemu-iotests/118.out b/tests/qemu-iotests/118.out
new file mode 100644
index 0000000..ae1213e
--- /dev/null
+++ b/tests/qemu-iotests/118.out
@@ -0,0 +1,5 @@
+.
+----------------------------------------------------------------------
+Ran 1 tests
+
+OK
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 6812681..8cd4db1 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -122,6 +122,7 @@
 115 rw auto
 116 rw auto quick
 117 rw auto quick
+118 rw auto quick
 121 rw auto
 122 rw auto
 123 rw auto quick
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 945f2a2..013d5da 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -140,6 +140,12 @@ class VM(object):
         self._args.append(desc)
         return self
 
+    def add_dirty_bitmap(self, name, drive):
+        '''Add dirty bitmap parameter to VM cmd'''
+        self._args.append('-dirty-bitmap')
+        self._args.append('name=%s,drive=%s' % (name, drive))
+        return self
+
     def pause_drive(self, drive, event=None):
         '''Pause drive r/w operations'''
         if not event:
-- 
1.9.1