Checks if IOS image exist at startup and not during node creation. Fixes #240.

gns3server/modules/dynamips/__init__.py

@@ -360,14 +360,6 @@ class Dynamips(BaseManager):
 
         return hypervisor
 
-    @asyncio.coroutine
-    def ghost_ios_support(self, vm):
-
-        ghost_ios_support = self.config.get_section_config("Dynamips").getboolean("ghost_ios_support", True)
-        if ghost_ios_support:
-            with (yield from Dynamips._ghost_ios_lock):
-                yield from self._set_ghost_ios(vm)
-
     @asyncio.coroutine
     def create_nio(self, node, nio_settings):
         """
@@ -437,6 +429,14 @@ class Dynamips(BaseManager):
         yield from nio.create()
         return nio
 
+    @asyncio.coroutine
+    def ghost_ios_support(self, vm):
+
+        ghost_ios_support = self.config.get_section_config("Dynamips").getboolean("ghost_ios_support", True)
+        if ghost_ios_support:
+            with (yield from Dynamips._ghost_ios_lock):
+                yield from self._set_ghost_ios(vm)
+
     @asyncio.coroutine
     def _set_ghost_ios(self, vm):
         """

gns3server/modules/dynamips/nodes/router.py

@@ -462,9 +462,6 @@ class Router(BaseVM):
 
         image = self.manager.get_abs_image_path(image)
 
-        if not os.path.isfile(image):
-            raise DynamipsError("IOS image '{}' is not accessible".format(image))
-
         yield from self._hypervisor.send('vm set_ios "{name}" "{image}"'.format(name=self._name, image=image))
 
         log.info('Router "{name}" [{id}]: has a new IOS image set: "{image}"'.format(name=self._name,