If we allow launching VM again we will loose track of the first launched
VM.

Reviewed-by: Fam Zheng <f...@redhat.com>
Signed-off-by: Amador Pahim <apa...@redhat.com>
---
 scripts/qemu.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/qemu.py b/scripts/qemu.py
index 305d7bd098..0b0b61be39 100644
--- a/scripts/qemu.py
+++ b/scripts/qemu.py
@@ -207,6 +207,9 @@ class QEMUMachine(object):
         Launch the VM and make sure we cleanup and expose the
         command line/output in case of exception
         """
+        if self.is_running():
+            raise QEMUMachineError('VM already running')
+
         self._iolog = None
         self._qemu_full_args = None
         try:
-- 
2.13.6


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