[jump] Enable jumbo frames for vnet devices

[fuel.git] / mcp / scripts / lib.sh

diff --git a/mcp/scripts/lib.sh b/mcp/scripts/lib.sh
index 9c12bff..c566cc9 100644 (file)
--- a/mcp/scripts/lib.sh
+++ b/mcp/scripts/lib.sh
@@ -407,6 +407,7 @@ function create_vms {
 
   # create vms with specified options
   for serialized_vnode_data in "${vnodes[@]}"; do
+    if [ -z "${serialized_vnode_data}" ]; then continue; fi
     IFS=',' read -r -a vnode_data <<< "${serialized_vnode_data}"
 
     # prepare network args
@@ -545,6 +546,13 @@ function wait_for {
   )
 }
 
+function do_udev_cfg {
+  local _conf='/etc/udev/rules.d/99-opnfv-fuel-vnet-mtu.rules'
+  # http://linuxaleph.blogspot.com/2013/01/how-to-network-jumbo-frames-to-kvm-guest.html
+  echo 'SUBSYSTEM=="net", ACTION=="add", KERNEL=="vnet*", RUN+="/sbin/ip link set mtu 9000 dev '"'"%k"'"'"' |& sudo tee "${_conf}"
+  sudo udevadm control --reload || true
+}
+
 function do_sysctl_cfg {
   local _conf='/etc/sysctl.d/99-opnfv-fuel-bridge.conf'
   # https://wiki.libvirt.org/page/Net.bridge.bridge-nf-call_and_sysctl.conf