clone LVM

clone_lvm.sh

#!/bin/bash

if [ "n$2" = "n" -o ! -e "$1" ] ; then
  echo "usage: $(basename $0) PATH_TO_LV_SOURCE NAME_OF_NEW_LV "
  echo -e "\nEx: $(basename $0) /dev/VG02_ssd/CentOS6 vm03-d1"
  exit 1
fi

SOURCE=$1
DEST=$2
size=`sudo lvs -o lv_size --unit=b --noheadings $SOURCE | sed 's/^ *//'`

VG=$(basename $( dirname $SOURCE ) )

echo "new volume size: size=$size on volume $VG"

set -e

lvcreate --size=$size --name=$DEST $VG

echo "LV Volume created now cloning from old disk"

cmd="dd if=$SOURCE of=/dev/${VG}/${DEST} bs=131072"

echo running $cmd
$cmd

lvdisplay /dev/${VG}/${DEST}