IP=`host $HOSTNAME.xvm.mit.edu | sed 's/.* //' | head -n 1`
fi
-VOLUME=/dev/mapper/xenvg-d_${HOSTNAME}_hda
+VOLUME=/dev/mapper/xenvg-d_$(echo "$HOSTNAME" | sed -e 's/-/--/g')_hda
# If this script is interrupted, it may not clean up after itself.
# In particular, it may leave ${VOLUME}1 mounted somewhere in tmp.