[jump vnet] Workaround MTU set race condition

Older libvirt (1.x, 2.x, even older 3.x) try to enforce their own MTU
(1500), overriding it back to 1500 after the udev rule finished.
Delay link modification with 1 second and extend its patten to also
include libvirt's own tap interfaces (<network name>-nic).

Change-Id: I3050c11de7f376df02cbf203e9106b61c560683f
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/mcp/scripts/lib.sh b/mcp/scripts/lib.sh
index 016af2b..d7af97c 100644 (file)
--- a/mcp/scripts/lib.sh
+++ b/mcp/scripts/lib.sh
@@ -550,8 +550,10 @@ 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|change", KERNEL=="vnet*", ATTR{mtu}="9000"' |& sudo tee "${_conf}"
-  sudo udevadm control --reload || true
+  echo 'SUBSYSTEM=="net", ACTION=="add|change", KERNEL=="vnet*", RUN+="/bin/sh -c '"'/bin/sleep 1; /sbin/ip link set %k mtu 9000'\"" |& sudo tee "${_conf}"
+  echo 'SUBSYSTEM=="net", ACTION=="add|change", KERNEL=="*-nic", RUN+="/bin/sh -c '"'/bin/sleep 1; /sbin/ip link set %k mtu 9000'\"" |& sudo tee -a "${_conf}"
+  sudo udevadm control --reload
+  sudo udevadm trigger
 }
 
 function do_sysctl_cfg {