QEMU complains about us not being explicit with setting snapshot so
lets do that. Also as cdroms are RO media we don't need to jump the
hoops of setting up snapshots and replay disks - just declare the
drive is a cdrom and nothing should change.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 tests/avocado/replay_linux.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tests/avocado/replay_linux.py b/tests/avocado/replay_linux.py
index e95bff3299..f3a43dc98c 100644
--- a/tests/avocado/replay_linux.py
+++ b/tests/avocado/replay_linux.py
@@ -48,12 +48,15 @@ def vm_add_disk(self, vm, path, id, device):
         bus_string = ''
         if self.bus:
             bus_string = ',bus=%s.%d' % (self.bus, id,)
-        vm.add_args('-drive', 'file=%s,snapshot,id=disk%s,if=none' % (path, id))
+        vm.add_args('-drive', 'file=%s,snapshot=on,id=disk%s,if=none' % (path, id))
         vm.add_args('-drive',
             'driver=blkreplay,id=disk%s-rr,if=none,image=disk%s' % (id, id))
         vm.add_args('-device',
             '%s,drive=disk%s-rr%s' % (device, id, bus_string))
 
+    def vm_add_cdrom(self, vm, path, id, device):
+        vm.add_args('-drive', 'file=%s,id=disk%s,if=none,media=cdrom' % (path, id))
+
     def launch_and_wait(self, record, args, shift):
         self.require_netdev('user')
         vm = self.get_vm()
@@ -65,7 +68,7 @@ def launch_and_wait(self, record, args, shift):
         if args:
             vm.add_args(*args)
         self.vm_add_disk(vm, self.boot_path, 0, self.hdd)
-        self.vm_add_disk(vm, self.cloudinit_path, 1, self.cd)
+        self.vm_add_cdrom(vm, self.cloudinit_path, 1, self.cd)
         logger = logging.getLogger('replay')
         if record:
             logger.info('recording the execution...')
-- 
2.39.2