[Qemu-devel] [PATCH v7 09/11] qemu.py: launch vm only if it's not running

[Amador Pahim]

A new call to launch() with a running VM will fall in exception and
consequently call shutdown().

This patch makes launch() to raise an exception when it's called with VM
already running.

Signed-off-by: Amador Pahim <address@hidden>
---
 scripts/qemu.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/qemu.py b/scripts/qemu.py
index 9ae65e454e..46e8ff3232 100644
--- a/scripts/qemu.py
+++ b/scripts/qemu.py
@@ -170,6 +170,9 @@ class QEMUMachine(object):
         self._iolog = None
         self._qemu_full_args = None
         devnull = open(os.path.devnull, 'rb')
+        if self.is_running():
+            raise QEMULaunchError('VM already running')
+
         try:
             self._pre_launch()
             self._qemu_full_args = (self._wrapper + [self._binary] +
-- 
2.13.5