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#!/bin/bash# Script for LVM-resize. Version 0.1# Usage: ./resize.sh LV-Partition-name Size(GB) VolumeGroupName LOG_FILE_NAMEif [ -z "${1}" ]; then	LV_NAME="tmp"else	LV_NAME="${1}"fiif [ -z "${2}" ]; then	SIZE="2"else	SIZE="${2}"fiif [ -z "${3}" ]; then	VG_NAME="system"else	VG_NAME="${3}"fiif [ -z "${4}" ]; then	LOG_FILE="~/log-resize.log"else	LOG_FILE="${4}"fiecho "We would extend ${VG_NAME}-${LV_NAME} for ${SIZE} GiB."echo "Note: If you have any problem - check ${LOG_FILE}"echo "[y/n]"read AGREEif [ "${AGREE}" = "y" ]; then    vgscan     echo "Umounting ${VG_NAME}-${LV_NAME}" > ${LOG_FILE}    umount /dev/mapper/${VG_NAME}-${LV_NAME} >> ${LOG_FILE} 2>&1 || echo "[Failed]: Cannot umount ${VG_NAME}-${LV_NAME}"    echo >> ${LOG_FILE}    echo "Resizing LV-partition" >> ${LOG_FILE}    lvresize -L +${SIZE}G -v /dev//${VG_NAME}/${LV_NAME} >> ${LOG_FILE} 2>&1 || echo "[Failed]: Cannot resize ${VG_NAME}-${LV_NAME}"    echo >> ${LOG_FILE}    echo "Turning off journal" >> ${LOG_FILE}    tune2fs -O ^has_journal /dev/${VG_NAME}/${LV_NAME} >> ${LOG_FILE} 2>&1 || echo "[Failed]: Cannot turn off journal"    echo >> ${LOG_FILE}    echo "Checking filesystem:" >> ${LOG_FILE}    e2fsck -f /dev/mapper/${VG_NAME}-${LV_NAME}    echo >> ${LOG_FILE}    echo "Resizing fs" >> ${LOG_FILE}    resize2fs -p /dev/${VG_NAME}/${LV_NAME} >> ${LOG_FILE} 2>&1 || echo "[Failed]: resize2fs failed"    echo >> ${LOG_FILE}    echo "Turning on journal" >> ${LOG_FILE}    tune2fs -O has_journal /dev/${VG_NAME}/${LV_NAME}  >> ${LOG_FILE} 2>&1 || echo "[Failed]: Cannot turn on journal"    echo >> ${LOG_FILE}    echo "Mounting fs back" >> ${LOG_FILE}    mount /dev/mapper/${VG_NAME}-${LV_NAME} >> ${LOG_FILE} 2>&1 || echo "[Failed]: Cannot mount ${VG_NAME}-${LV_NAME}"else    echo "canceled"fi