dd备份整个磁盘shell脚本(使用位置参数小例子)

每次用dd备份整个磁盘的时候都很方便,偶然听到朋友问我位置参数的问题,于是心血来潮,干脆写个shell脚本实现自动备份,以后就不用找源磁盘,目的磁盘,挂载分区等等操作了,代码帮我实现。

以下是我花了连续5个小时调试好的脚本,虽然有些拙劣,但是也是小小的成功吧,每天进步一点点。

 

#!/bin/bash

# Author: Attaboy
# Description: backup whole disk of S5 and HSTONG office PC's SSD using dd
# Modify history:
#    2018-06-23 first release
#    2018-06-24 modify
#    2018-06-25 modify

log="./dd_backup_disk.log"
mount_dir="./m_dir"
S5_bak_src_dev=$(fdisk -l 2>/dev/null | awk -F '[ \t]+|:' '/111.+G/{print $2}')
HSTONG_bak_src_dev=$(fdisk -l 2>/dev/null | awk -F '[ \t]+|:' '/111.+G/{print $2}')
S5_bak_dst_dev=$(fdisk -l 2>/dev/null | awk -F '[ \t]+|:' '/1.8.+T/{print $2}')"5"
HSTONG_bak_dst_dev=$(fdisk -l 2>/dev/null | awk -F '[ \t]+|:' '/931\.5.+GB/{print $2}')"1"
S5_bak_dst_file="${mount_dir}/backup/home_dev_bak/s5_os_bak/ssd_bak_$(date +%Y%m%d).bz2"
HSTONG_bak_dst_file="${mount_dir}/Hstong-ssd-backup-$(date +%Y%m%d).bz2"

echo ${S5_bak_src_dev}
echo ${S5_bak_dst_dev}
echo ${S5_bak_dst_file}
echo ${HSTONG_bak_src_dev}
echo ${HSTONG_bak_dst_dev}
echo ${HSTONG_bak_dst_file}

usage() {
        echo -e "\nSyntax Error! Only one argument is allowed!" >>${log} 2>&1
        echo -e "Usage: script.sh [S5|HSTONG]\n" >>${log} 2>&1
        exit 7
}

pre_chk() {

# check current execute user.
if [ $UID -ne “0” ] ; then
        echo -e "\n…… Current user is not root." >>${log} 2>&1
        exit -1
fi

echo -e "\n====================================================\n" >>${log} 2>&1
echo -e "Check passed!!" >>${log} 2>&1
echo -e "\n====================================================\n" >>${log} 2>&1

}

backup() {

# check the number of arguments
if [ $# -ne “3” ] ; then
        echo -e "\n3 arguments will be specified.\n"
        echo -e "\nUsage: backup [argu1] [argu2] [argu3]\n"
        exit 10
fi

# check mount dir exists
if [ ! -d ${mount_dir} ] ; then
        mkdir -p ${mount_dir}
fi

# mount dst device
\df -hT | grep -iE "$2"
if [ $? -eq “0” ] ; then
        umount -l $2 >>${log} 2>&1
        mount -t ntfs-3g $2 ${mount_dir} >>${log} 2>&1
elif [ $? -ne “0” ] ; then
        mount -t ntfs-3g $2 ${mount_dir} >>${log} 2>&1
else
        echo -e "\nOther mount problem!!!\n" >>${log} 2>&1
fi

\df -hT | grep -iE "$2"
# check mount
if [ $? -eq “0” ] ; then
        echo -e "\n>>> Mount dst backup device OK\n" >>${log} 2>&1
        \df -hT >>${log} 2>&1
else
        echo -e "\nMount dst backup device FAILED\n" >>${log} 2>&1
        exit 8
fi

# check disk space
_dst_space=$(\df -hT | grep -iE "$2" | awk -F '[ \t]+|G' '{print $5}')
if [ ${_dst_space} -le “50” ] ; then
        echo -e "\nDisk space is less than 50GB\n" >>${log} 2>&1
        exit 9
else
        echo -e "\nDisk space is adequate\n" >>${log} 2>&1
fi

# start to backup
echo -e "\nStarting backup …… \n" >>${log} 2>&1
dd if=$1 | bzip2 >$3

}

post_do(){

# check the number of arguments
if [ $# -ne “1” ] ; then
        echo -e "Syntax Error, Only one argument is allowed!" >>${log} 2>&1
        exit -2
fi

# check if dst backup file exists
bak_file_size=$(du -m $1 | awk '{print $1}')
if [ ! -s $1 ] ; then
        echo -e "\nBackup file not exists!!\n" >>${log} 2>&1
        exit 9
elif [ ${bak_file_size} -le “20000” ] ; then
        echo -e "Dst backup file size is less than 20000 MB !!" >>${log} 2>&1
        exit -3
else
        echo -e "Congratulations, backup succeeded!!" >>${log} 2>&1

fi

ping_num="4"
echo -e "\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n" >>${log} 2>&1
echo -e "Your machine will halt in ${ping_num} seconds." >>${log} 2>&1
echo -e "\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n" >>${log} 2>&1
ping -c ${ping_num} 127.0.0.1 >>${log} 2>&1

# shutdown
init 0

}

# start to backup

if [ $# -gt “1” ] ; then
        usage
elif [ $# -lt “1” ] ; then
 echo -e "\nNo arguments found.\n" >>${log} 2>&1
 exit 7
else
        pre_chk
fi

case $1 in

  S5|s5)
        if [ -z ${S5_bak_src_dev} ] ; then
                echo -e "\nSrc backup device not exists!!\n" >>${log} 2>&1
                exit 6
        else
                backup ${S5_bak_src_dev} ${S5_bak_dst_dev} ${S5_bak_dst_file}
                post_do ${S5_bak_dst_file}
        fi
  ;;

  HSTONG|hs|HS|hstong|HST)
        if [ -z ${HSTONG_bak_src_dev} ] ; then
                echo -e "\nSrc backup device not exists!!\n" >>${log} 2>&1
                exit 6
        else
                backup ${HSTONG_bak_src_dev} ${HSTONG_bak_dst_dev} ${HSTONG_bak_dst_file}
                post_do ${HSTONG_bak_dst_file}
        fi
  ;;

  *)
          usage
  ;;

esac

exit 0

 

发表评论

电子邮件地址不会被公开。