+# umount all snapshots
+gnt-cluster command -M mount | grep snap | grep -v rbd.disk[0-9].snap | awk '{ print "ssh "$1" umount "$4 }' | sed 's/: / /' | xargs -i sh -exec {}
+
+# remove mount directories
+gnt-cluster command 'rmdir /dev/shm/*.snap'
+
+# create shell command to run on all nodes