[Qemu-block] [PATCH v4 03/10] iotests: add test-case to 165 to test reopening qcow2 bitmaps to RW

[Vladimir Sementsov-Ogievskiy]

Reopening bitmaps to RW was broken prior to previous commit. Check that
it works now.

Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
 tests/qemu-iotests/165     | 46 ++++++++++++++++++++++++++++++++++++--
 tests/qemu-iotests/165.out |  4 ++--
 2 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/165 b/tests/qemu-iotests/165
index 88f62d3c6d..dd93b5a2d0 100755
--- a/tests/qemu-iotests/165
+++ b/tests/qemu-iotests/165
@@ -43,10 +43,10 @@ class TestPersistentDirtyBitmap(iotests.QMPTestCase):
         os.remove(disk)
 
     def mkVm(self):
-        return iotests.VM().add_drive(disk)
+        return iotests.VM().add_drive(disk, opts='node-name=node0')
 
     def mkVmRo(self):
-        return iotests.VM().add_drive(disk, opts='readonly=on')
+        return iotests.VM().add_drive(disk, opts='readonly=on,node-name=node0')
 
     def getSha256(self):
         result = self.vm.qmp('x-debug-block-dirty-bitmap-sha256',
@@ -102,5 +102,47 @@ class TestPersistentDirtyBitmap(iotests.QMPTestCase):
 
         self.vm.shutdown()
 
+    def test_reopen_rw(self):
+        self.vm = self.mkVm()
+        self.vm.launch()
+        self.qmpAddBitmap()
+
+        # Calculate sha256 corresponding to regions1
+        self.writeRegions(regions1)
+        sha256 = self.getSha256()
+        result = self.vm.qmp('block-dirty-bitmap-clear', node='drive0',
+                             name='bitmap0')
+        self.assert_qmp(result, 'return', {})
+
+        self.vm.shutdown()
+
+        self.vm = self.mkVmRo()
+        self.vm.launch()
+
+        # We've loaded empty bitmap
+        assert sha256 != self.getSha256()
+
+        # Check that we are in RO mode
+        self.writeRegions(regions1)
+        assert sha256 != self.getSha256()
+
+        result = self.vm.qmp('x-blockdev-reopen', **{
+            'node-name': 'node0',
+            'driver': iotests.imgfmt,
+            'file': {
+                'driver': 'file',
+                'filename': disk
+            },
+            'read-only': False
+        })
+        self.assert_qmp(result, 'return', {})
+
+        # Check that bitmap is reopened to RW and we can write to it.
+        self.writeRegions(regions1)
+        assert sha256 == self.getSha256()
+
+        self.vm.shutdown()
+
+
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2'])
diff --git a/tests/qemu-iotests/165.out b/tests/qemu-iotests/165.out
index ae1213e6f8..fbc63e62f8 100644
--- a/tests/qemu-iotests/165.out
+++ b/tests/qemu-iotests/165.out
@@ -1,5 +1,5 @@
-.
+..
 ----------------------------------------------------------------------
-Ran 1 tests
+Ran 2 tests
 
 OK
-- 
2.18.0