[launch] don't attempt to handle storage if it's not defined.
@@ -266,6 +266,7 @@ class QEMU(Launchable):
self.options += getopts('qemu.network_options')
storage = getvar('config.storage')
+ if storage:
if not os.path.isfile(storage):
raise SystemExit(f'{storage}: file does not exist!')
drive = getvar('qemu.drive', failok=True)
