[文章作者:张宴 本文版本:v1.0 最后修改:2009.07.06 转载请注明原文链接:http://blog.zyan.cc/linux_ext3_undelete/]

  环境:CentOS 5.3 x86_64下,/dev/sdb1为数据分区/data0,EXT3文件系统。
  前因:误删了/data0/tcsql/cankao/phpcws-1.5.0/httpcws.cpp文件。由于忘了备份httpcws.cpp文件,重新开发工作量较大,因此只有恢复该文件一条路可走。

  debugfs命令针对EXT2分区还行,但对EXT3分区就帮不上忙了。偶然发现的一款开源软件,解决了我的大忙。该软件下载网址为:
  http://code.google.com/p/ext3grep/

  1、先安装ext3grep软件:
wget http://ext3grep.googlecode.com/files/ext3grep-0.10.1.tar.gz
tar zxvf ext3grep-0.10.1.tar.gz
cd ext3grep-0.10.1
./configure
make
make install


  2、umount /data0分区:
umount /data0

  如果提示busy,先kill正在使用这个目录的进程,再umount:
fuser -k /data0
umount /data0


  3、查询所有Inode,(执行需要几分钟~十多分钟):
ext3grep /dev/sdb1 --ls --inode 2

  点击在新窗口中浏览此图片

  4、逐级查找Inode,看是否能找到httpcws.cpp文件(此步骤也可省略):

  点击在新窗口中浏览此图片

  点击在新窗口中浏览此图片

  5、恢复/data0/tcsql/cankao/phpcws-1.5.0/httpcws.cpp文件:
ext3grep /dev/sdb1 --restore-file tcsql/cankao/phpcws-1.5.0/httpcws.cpp

  点击在新窗口中浏览此图片

  如果提示以下信息,则表示恢复成功:
  Restoring tcsql/cankao/phpcws-1.5.0/httpcws.cpp

  这时,执行ext3grep命令的当前目录下将会自动生成一个名为RESTORED_FILES的文件夹,文件夹下的tcsql/cankao/phpcws-1.5.0/httpcws.cpp即为恢复的文件。查看了一下,和被删除前的内容一样,大功告成。


  6、重新mount /data0分区:
mount /dev/sdb1 /data0


  参考资料:http://www.xs4all.nl/~carlo17/howto/undelete_ext3.html




技术大类 » 其他Unix技术 | 评论(53) | 引用(0) | 阅读(84477)
xiaoyao3857
2013-1-22 16:33
啊,知道了杀掉占用目录的方法,kill正在使用这个目录的进程;fuser -k 分区
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