From d7853c4a000ec15f1937deae7733fcff29d2a53d Mon Sep 17 00:00:00 2001
From: Jaime Melis <j.melis@fdi.ucm.es>
Date: Mon, 5 Dec 2011 16:58:34 +0100
Subject: [PATCH] feature #863: don't use exec_and_log for commands that may
 fail

---
 src/vnm_mad/remotes/802.1Q/HostManaged.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/vnm_mad/remotes/802.1Q/HostManaged.rb b/src/vnm_mad/remotes/802.1Q/HostManaged.rb
index 47a65a3cce..28e9a602be 100644
--- a/src/vnm_mad/remotes/802.1Q/HostManaged.rb
+++ b/src/vnm_mad/remotes/802.1Q/HostManaged.rb
@@ -64,7 +64,8 @@ class OpenNebulaHM < OpenNebulaNetwork
 
     def device_exists?(dev, vlan=nil)
         dev = "#{dev}.#{vlan}" if vlan
-        OpenNebula.exec_and_log("#{COMMANDS[:ip]} link show #{dev}")
+        `#{COMMANDS[:ip]} link show #{dev}`
+        $?.exitstatus == 0
     end
 
     def create_dev_vlan(dev, vlan)