#!/bin/sh -e

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

# lvs --noheadings --units=m --nosuffix '--separator=|' -ovg_name,lv_name,lv_size,lv_attr
if echo $* | grep -q vg_name,lv_name,lv_size,lv_attr ; then

	zfs get volsize -t volume -r $EXTP_ZFS -H -p -o name,value | sed "s:$EXTP_ZFS/*::" | awk '{ print "  '$EXTP_VG'|"$1"|" $2 / 1024 / 1024 "|-wi-a---" }' # FIXME handle -wi-ao-- for used volumes, via ganeti:originstname ?
	/sbin/lvm lvs $* || exit 0 # local, might fail

# gnt-instance modify -t drbd -n box02 zfs
# lvs --noheadings '--separator=|' --units=k --nosuffix -olv_attr,lv_kernel_major,lv_kernel_minor,vg_extent_size,stripes,devices /dev/ffzgvg/c72d9ea7-f396-4104-b4ee-8b613da32051.disk1
elif echo $* | grep -q lv_attr,lv_kernel_major,lv_kernel_minor,vg_extent_size,stripes,devices ; then
	
	while [ ! -z "$1" ] ; do
		case $1 in 
		*$EXTP_VG*) VOL_NAME=`echo $1 | cut -d/ -f4` ;;
		esac
		shift
	done

	volblocksize=`zfs get volblocksize -o value -p -H $EXTP_ZFS/$VOL_NAME`
	perm="-wi-ao--" # no snapshot
	if [ -e /dev/zvol/$EXTP_ZFS/$VOL_NAME.snap ] ; then
		perm="owi-aos-" # snapshot origin
	elif echo $VOL_NAME | grep -q '.snap$' ; then
		perm="swi-a-s-" # snapshot
	fi
	ls -al `readlink -f /dev/zvol/$EXTP_ZFS/$VOL_NAME` | sed 's/,//' | awk '{ print "  -wi-ao--|" $5 "|" $6 "|'$volblocksize'|1|" $10 "(" $6 * 1280 + $6 ")" }' # FIXME what is number after device?

else
	/sbin/lvm lvs $*
fi