--- /dev/null
+#!/bin/sh
+
+mount | grep lustre > /dev/null
+if [ $? -eq 0 ]; then
+ echo "Please unmount lustre before unload modules."
+ exit 1
+fi
+kextunload /System/Library/Extensions/llite.kext
+kextunload /System/Library/Extensions/mdc.kext
+kextunload /System/Library/Extensions/lov.kext
+kextunload /System/Library/Extensions/osc.kext
+kextunload /System/Library/Extensions/ptlrpc.kext
+kextunload /System/Library/Extensions/ptlrpcs.kext
+kextunload /System/Library/Extensions/obdclass.kext
+kextunload /System/Library/Extensions/lvfs.kext
+kextunload /System/Library/Extensions/ksocknal.kext
+kextunload /System/Library/Extensions/portals.kext
+kextunload /System/Library/Extensions/libcfs.kext