cleanup_mount $MOUNT
# mount lustre on mds
lustre_client=$(facet_active_host $SINGLEMDS)
-[ "$NFSVERSION" = "4" ] && cl_mnt_opt="$MOUNTOPT,32bitapi" || cl_mnt_opt=""
+[ "$NFSVERSION" = "4" ] && cl_mnt_opt="${MOUNT_OPTS:+$MOUNT_OPTS,}32bitapi" ||
+ cl_mnt_opt=""
zconf_mount_clients $lustre_client $MOUNT "$cl_mnt_opt" || \
error "mount lustre on $lustre_client failed"