ubuntu的备份和还原

dd

备份mbr

 dd if=/dev/sda of=/backup/mbr.img bs=512 count=1

 还原mbr

 dd if=/backup/mbr.img of=/dev/sda bs=446 count=1

还原分区表,跳过主引导记录

 dd if=/backup/mbr.img of=/dev/sda bs=1 count=64 skip=446 seek=446

 GNU/TAR

备份

 tar -cpzvf backup.tar.gz /media/usb/*

 

tar -cvpzf /backup/backuptest.tgz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys --exclude=/media /

 还原

 

tar -xvpzf /backup/backuptest.tgz -C /

cpio

dump/restore

xfsdump/xfsrestore

备份

 sudo xfsdump - /boot > backup.file

 还原

 sudo cat backup.file | xfsrestore - /boot