#!/bin/bash

#rbt
# Description in BREST-2936

if [ -z "${ONE_LOCATION}" ]; then
    LIB_LOCATION=/usr/lib/one
else
    LIB_LOCATION=$ONE_LOCATION/lib
fi

. $LIB_LOCATION/sh/scripts_common.sh

DRIVER_PATH=$(dirname $0)
source ${DRIVER_PATH}/../libfs.sh

DRV_ACTION=$1
ID=$2

XPATH="${DRIVER_PATH}/../xpath.rb -b $DRV_ACTION"

unset i XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <($XPATH     /DS_DRIVER_ACTION_DATA/DATASTORE/BASE_PATH \
                    /DS_DRIVER_ACTION_DATA/IMAGE/DATASTORE_ID)

unset i

BASE_PATH="${XPATH_ELEMENTS[i++]}"
DS_ID="${XPATH_ELEMENTS[i++]}"
NEW_DS_ID=`echo $BASE_PATH | cut -d "/" -f 7`

LV_NAME="lv-one-image-${ID}"
VG_NAME="vg-one-${DS_ID}"
DEV="/dev/${VG_NAME}/${LV_NAME}"

NEW_VG_NAME="vg-one-${NEW_DS_ID}"
NEW_DEV="/dev/${NEW_VG_NAME}/${LV_NAME}"

# get source size
VSIZE=`qemu-img info --output json $SRC | jq '."virtual-size"'`
SIZE8=$(bc<<<"scale=3;$VSIZE*1.08")

# create the new volume
$SUDO $LVCREATE --wipesignatures n -L${SIZE8}M -n $LV_NAME $NEW_VG_NAME > /dev/null 2>&1
# activate new volume
$SUDO $LVCHANGE -ays "${NEW_VG_NAME}/${LV_NAME}" > /dev/null 2>&1

# copy the content to new volume
$SUDO $QEMU_IMG convert -O $FORMAT ${DEV} $NEW_DEV > /dev/null 2>&1
# remove the source
$SUDO $LVREMOVE --yes $DEV > /dev/null 2>&1

# return the new dev - to use it to set SOURCE for image in oned handler
echo "$NEW_DEV $NEW_DS_ID"
