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使用extundelete恢复被删文件

   在生产环境,运维人员有时候会误删文件,或者一些别有用心的人故意删除你服务器数据上的重要数据。出现这种情况导致数据丢失,对公司可能造成重大影响,因此你的饭碗也有可能不保。在linux环境下有一些帮助我们恢复丢失数据的软件,其中"extundelete"就是一个很强大的开源软件。

  首先,下载extundelete,编译安装它。

[root@localhost opt]# wget http://sourceforge.net/projects/extundelete/files/latest/download

[root@localhost opt]# tar jxf extundelete-0.2.4.tar.bz2

[root@localhost opt]# ls

extundelete-0.2.4  extundelete-0.2.4.tar.bz2

[root@localhost opt]# cd extundelete-0.2.4

[root@localhost extundelete-0.2.4]# ./configure

[root@localhost extundelete-0.2.4]#make && make install


测试建立测试环境

[root@localhost extundelete-0.2.4]# mkdir /movie

[root@localhost extundelete-0.2.4]# mkfs.ext3 /dev/sdb

[root@localhost ~]# mount /dev/sdb /movie/

[root@localhost ~]# vim /movie/test

[root@localhost ~]# mkdir /movie/data

[root@localhost ~]# cp /etc/passwd /movie/data/

[root@localhost ~]# rm -rf /movie/*

[root@localhost ~]# umount /dev/sdb


查看/dev/sdb的数据情况,可以看到被删除的文件"deleted".

[root@localhost /]# extundelete /dev/sdb --inode 2


File name                                       | Inode number | Deleted status

.                                                 2

..                                                2

.test.swp                                         11             Deleted

test                                              12             Deleted

data                                              751728         Deleted


恢复单个文件:

[root@localhost /]# extundelete /dev/sdb --restore-file test

NOTICE: Extended attributes are not restored.

Loading filesystem metadata ... 80 groups loaded.

Loading journal descriptors ... 39 descriptors loaded.

Successfully restored file test


恢复单个目录:



[root@localhost ~]# extundelete /dev/sdb --restore-directory bbq

NOTICE: Extended attributes are not restored.

Loading filesystem metadata ... 80 groups loaded.

Loading journal descriptors ... 34 descriptors loaded.

Searching for recoverable inodes in directory bbq ...

2 recoverable inodes found.

Looking through the directory structure for deleted files ...

Unable to restore inode 557058 (bbq/qweqweqw): Space has been reallocated.

1 recoverable inodes still lost.

恢复所有文件:

[root@localhost ~]# extundelete /dev/sdb --restore-all


extundelete会把文件恢复到当前目录的“ RECOVERED_FILES”里面,可以查看数据是否有还原回来

[root@localhost /]# ls RECOVERED_FILES/

test  test.v1


本文出自 “龙爱雪琪” 博客,请务必保留此出处http://dragon123.blog.51cto.com/9152073/1557737

使用extundelete恢复被删文件