[Qemu-devel] [PATCH v12 15/17] iotests: add transactional incremental backup test

[John Snow <jsnow@redhat.com>]

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/112     | 45 +++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/112.out |  4 ++--
 2 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/112 b/tests/qemu-iotests/112
index 31431ad..7d1a6ec 100644
--- a/tests/qemu-iotests/112
+++ b/tests/qemu-iotests/112
@@ -176,6 +176,51 @@ class TestIncrementalBackup(iotests.QMPTestCase):
         return True
 
 
+    # Create a bitmap and full backup *after* VM execution begins.
+    # Use transactions to accomplish a bitmap re-sync, then create
+    # an incremental backup.
+    def test_incremental_transaction(self):
+        bitmap0 = self.add_bitmap('bitmap0', 'drive0')
+        self.vm.hmp('c')
+        self.hmp_io_writes('drive0', (('0xab', 0, 512),
+                                      ('0xfe', '16M', '256k'),
+                                      ('0x64', '32736k', '64k')))
+        bitmap1 = self.add_bitmap('bitmap1', 'drive0')
+
+        result = self.vm.qmp('transaction', actions=[
+            {
+                'type': 'block-dirty-bitmap-clear',
+                'data': { 'node': 'drive0',
+                          'name': 'bitmap0' },
+            },
+            {
+                'type': 'block-dirty-bitmap-clear',
+                'data': { 'node': 'drive0',
+                          'name': 'bitmap1' },
+            },
+            {
+                'type': 'drive-backup',
+                'data': { 'device': 'drive0',
+                          'sync': 'full',
+                          'format': iotests.imgfmt,
+                          'target': self.full_bak },
+            }
+        ])
+        self.assert_qmp(result, 'return', {})
+        self.wait_until_completed()
+        self.files.append(self.full_bak)
+        self.check_full_backup()
+
+        self.hmp_io_writes('drive0', (('0x9a', 0, 512),
+                                      ('0x55', '8M', '352k'),
+                                      ('0x78', '15872k', '1M')))
+        # Both bitmaps should be in sync and create fully valid
+        # incremental backups
+        res1 = self.create_incremental(bitmap0)
+        res2 = self.create_incremental(bitmap1)
+        self.assertTrue(res1 and res2)
+
+
     def test_sync_dirty_bitmap_missing(self):
         self.assert_no_active_block_jobs()
         self.files.append(self.foo_img)
diff --git a/tests/qemu-iotests/112.out b/tests/qemu-iotests/112.out
index 8d7e996..89968f3 100644
--- a/tests/qemu-iotests/112.out
+++ b/tests/qemu-iotests/112.out
@@ -1,5 +1,5 @@
-...
+....
 ----------------------------------------------------------------------
-Ran 3 tests
+Ran 4 tests
 
 OK
-- 
1.9.3