don't leave snapshots hanging around

diff --git a/sbin/lvrename b/sbin/lvrename
index 8a10502..28dc120 100755 (executable)
--- a/sbin/lvrename
+++ b/sbin/lvrename
@@ -11,6 +11,8 @@ if [ "$EXTP_VG" = "$1" ] ; then
                # rename filesystems with snapshots using clone/promote
                zfs snap  $EXTP_ZFS/$2@$3
                zfs clone $EXTP_ZFS/$2@$3 $EXTP_ZFS/$3
+               zfs promote $EXTP_ZFS/$3  # new zvol is now origin
+               zfs destroy -R $EXTP_ZFS/$3@$3
        )
 else
        /sbin/lvm lvrename $*