Goal

A script for backing up an sdhc rootfs as a tarball.

Script

create-rootfs-image-from-sdhc.sh:

#!/bin/bash

set -e

SDHC=$1
MOUNT=/mnt/new_rootfs
PACKAGE=/home/shared/sdhc-rootfs-`date +%F`.tar
PACKAGE_LINK=/home/shared/sdhc-rootfs.tar

if [ ! -n "${SDHC}" ] || [ ! "0" == "`id -u`" ]
then
  echo 'Usage: `sudo '$0' /dev/MICRO_SDHC_PARTITION`'
  echo 'Example: `sudo '$0' /dev/sdc1`'
  echo 'most likely one of the below:'
  ls /dev/sd[b-z]* | grep [0-9]
  exit 1;
fi

# Create the environment for this script

umount ${SDHC} ${MOUNT} 2> /dev/null || true
mkdir -p ${MOUNT}
mount ${SDHC} ${MOUNT}
cd ${MOUNT}

echo "Creating backup of ${SDHC}"
tar cf ${PACKAGE} ./
ln -sf ${PACKAGE} ${PACKAGE_LINK}

sync
cd /tmp
umount ${MOUNT}
rm ${MOUNT} -rf

Updated at 2010-09-16

[Home] create file system image with tar

Goal

Script