#!/bin/sh

# btrfs-map-logical -l 354531753984 /dev/mapper/pps-backupn_1
dd if=/dev/mapper/pps-backupn_1 bs=4096 skip=63095764 count=4 of=backupn_1-block-63095764
dd if=/dev/mapper/pps-backupn_3 bs=4096 skip=1482964 count=4 of=backupn_3-block-1482964