From e4304238c201ea22eaea1d17d7d693f58799eae6 Mon Sep 17 00:00:00 2001
From: Jesse Andrews <anotherjesse@gmail.com>
Date: Fri, 7 Oct 2011 10:34:32 -0400
Subject: [PATCH] only mount cgroups if you haven't already

---
 stack.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/stack.sh b/stack.sh
index e64035b..9b53c8c 100755
--- a/stack.sh
+++ b/stack.sh
@@ -409,7 +409,9 @@ if [[ "$ENABLED_SERVICES" =~ "n-cpu" ]]; then
         if ! grep -q cgroup /etc/fstab; then
             echo none /cgroup cgroup cpuacct,memory,devices,cpu,freezer,blkio 0 0 | sudo tee -a /etc/fstab
         fi
-        sudo mount /cgroup
+        if ! mount -n | grep -q cgroup; then
+            sudo mount /cgroup
+        fi
     fi
 
     # User needs to be member of libvirtd group for nova-compute to use libvirt.