#!/bin/sh -ex

. /usr/share/ganeti/extstorage/zfs/defaults.sh

# lvrename ffzgvg cc9b16d9-7d14-452a-9150-74521bd8e721.disk0 d275c91f-70a7-4270-972c-b020fde9580b.disk0_data

if [ "$EXTP_VG" = "$1" ] ; then
	# delete snapshots which can't be renamed

	zfs rename $EXTP_ZFS/$2 $EXTP_ZFS/$3 || (
		# 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 $*
fi