gistfile1.sh

#!/bin/sh
#LVMのボリュームをバックアップするスクリプト
TYPE=$1
VG=$2
SNAPSHOT_SIZE=$3
BACKUP_TARGETS=$4
BACKUP_DIR=$5

usage()
{
        echo "$0 <xfs|bin> VG SNAPSHOT_SIZE BACKUP_TARGETS BACKUP_DIR"
}

backup_xfs()
{
        xfs_copy $SNAPSHOT_NAME $BACKUP_DIR/$lv.xfs~
        mv $BACKUP_DIR/$lv.xfs~ $BACKUP_DIR/$lv.xfs
}

backup_bin()
{
        dd if=$SNAPSHOT_NAME of=$BACKUP_DIR/$lv.img~ bs=1M
        mv $BACKUP_DIR/$lv.img~ $BACKUP_DIR/$lv.img
}

backup_ext()
{
        dump -0 -z9 -f $BACKUP_DIR/$lv.ext~ $SNAPSHOT_NAME
        mv $BACKUP_DIR/$lv.ext~ $BACKUP_DIR/$lv.ext
}

if [[ $# -lt 5 ]] ; then
        usage
        exit
fi

for lv in $BACKUP_TARGETS
do
        SNAPSHOT_NAME=/dev/$VG/$lv-snap4backup
        if [ -b $SNAPSHOT_NAME ]; then
                lvremove -f $SNAPSHOT_NAME
        fi
        lvcreate --snapshot --size=$SNAPSHOT_SIZE --name $lv-snap4backup /dev/$VG/$lv || exit
        sleep 3
        backup_$TYPE
        lvremove -f $SNAPSHOT_NAME
done