'target image does not match source after mirroring')
 
     def test_medium_not_found(self):
+        if iotests.qemu_default_machine != 'pc':
+            return
+
         result = self.vm.qmp('drive-mirror', device='ide1-cd0', sync='full',
                              target=target_img)
         self.assert_qmp(result, 'error/class', 'GenericError')
         if not self.has_quorum():
             return
 
+        if iotests.qemu_default_machine != 'pc':
+            return
+
         result = self.vm.qmp('drive-mirror', device='ide1-cd0', sync='full',
                              node_name='repair0',
                              replaces='img1',
 
         self.do_test_pause('blockdev-backup', 'drive1', blockdev_target_img)
 
     def test_medium_not_found(self):
+        if iotests.qemu_default_machine != 'pc':
+            return
+
         result = self.vm.qmp('drive-backup', device='ide1-cd0',
                              target=target_img, sync='full')
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_medium_not_found_blockdev_backup(self):
+        if iotests.qemu_default_machine != 'pc':
+            return
+
         result = self.vm.qmp('blockdev-backup', device='ide1-cd0',
                              target='drive1', sync='full')
         self.assert_qmp(result, 'error/class', 'GenericError')
         self.do_test_pause('blockdev-backup', 'drive1', blockdev_target_img)
 
     def do_test_medium_not_found(self, cmd, target):
+        if iotests.qemu_default_machine != 'pc':
+            return
+
         result = self.vm.qmp('transaction', actions=[{
                 'type': cmd,
                 'data': { 'device': 'ide1-cd0',