#!/bin/sh -e

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

# gnt-instance move --node arh-hw bbb
# lvcreate -L5120m -ne4bf0e9d-2c6e-4e1c-8bc4-342ee94724a5.disk0 -i1 ffzgvg tmp500g/block
if echo $* | grep -q $EXTP_VG ; then
	SNAP='-'
	while [ ! -z "$1" ] ; do
		case $1 in 

		-L*) VOL_SIZE=`echo $1 | sed 's/-L//'` ;;
		-n*) VOL_NAME=`echo $1 | sed 's/-n//'` ;;
		-s)  SNAP='s' ;;
		/dev/$EXTP_VG/*) VOL_ORIGIN=`echo $1 | cut -d/ -f4`

		esac
		shift
	done

	if [ $SNAP = '-' ] ; then

		test -e /dev/zvol/$EXTP_ZFS/$VOL_NAME || \
		zfs create -V ${VOL_SIZE} $EXTP_CREATE $EXTP_ZFS/$VOL_NAME

	else

		zfs snap $EXTP_ZFS/$VOL_ORIGIN@snap || true
		zfs set lv:s='o' $EXTP_ZFS/$VOL_ORIGIN
		zfs clone $EXTP_ZFS/$VOL_ORIGIN@snap $EXTP_ZFS/$VOL_NAME || true
		zfs set lv:s='s' $EXTP_ZFS/$VOL_NAME
		zfs set ganeti:originstname=$(VOL_NAME=$VOL_ORIGIN zfs_get ganeti:originstname) $EXTP_ZFS/$VOL_NAME
		zfs set lv:origin=$VOL_ORIGIN $EXTP_ZFS/$VOL_NAME
		export VOL_NAME
		echo $VOL_NAME
		$dir/attach

	fi

else
	/sbin/lvm lvcreate $*
fi