xenserver: Fix interface reconfigure crash when setting fail_mode.

Interface reconfigure can crash when setting fail_mode if an
expected other_config setting is not set.

diff --git a/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py b/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py
index a3d4bd2..22201ae 100644 (file)
--- a/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py
+++ b/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py
@@ -334,7 +334,7 @@ def configure_datapath(pif):
     pool = db().get_pool_record()
 
     if pool:
-        fail_mode = pool['other_config']['vswitch-controller-fail-mode']
+        fail_mode = pool['other_config'].get('vswitch-controller-fail-mode')
     else:
         fail_mode = 'standalone'