10個G的數據被誤刪除了,差點崩潰,試遍了全部常規恢復軟件,無用,就要放棄的時候,發現了ext3grep這個開源東東!html
順利恢復全部數據,因此linux下數據刪除並不可怕,可怕的是刪除後沒有恢復的方法,看看下面的操做吧!node
[root@localhost ~]# uname -alinux
Linux localhost.localdomain 2.6.18-8.el5 #1 SMP Fri Jan 26 14:15:21 EST 2007 i686 i686 i386 GNU/Linuxshell
其實什麼版本的系統無所謂 !app
所需的相關庫dom
[root@localhost ~]# rpm -qa |grep e2fsprogsoop
e2fsprogs-libs-1.39-8.el5測試
e2fsprogs-1.39-8.el5google
e2fsprogs-devel-1.39-8.el5rest
必需要有e2fsprogs-libs,否則在後面ext3grep的安裝會有問題。
分區狀況:
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
6.2G 1.8G 4.2G 30% /
/dev/sda1 99M 11M 83M 12% /boot
/dev/mapper/VolGroup00-LogVol02
1008M 34M 924M 4% /data
tmpfs 125M 0 125M 0% /dev/shm
須要軟件
http://code.google.com/p/ext3grep/downloads/list
先下載軟件
[root@localhost ~]# cd /root/src/
[root@localhost src]# wget http://ext3grep.googlecode.com/files/ext3grep-0.6.0.tar.gz src
[root@localhost src]# ls
ext3grep-0.6.0.tar.gz
[root@localhost src]# tar xfvz ext3grep-0.6.0.tar.gz
[root@localhost ext3grep-0.6.0]# ./configure
[root@localhost ext3grep-0.6.0]# make install
[root@localhost ext3grep-0.6.0]# ext3grep
Running ext3grep version 0.6.0
編譯而後測試可使用了,一切作好了之後開始咱們的恢復過程。
個人目錄是/data分區,我先格式化了分區,我放一個文件在根目錄下和一個子目錄下的文件。
/dev/mapper/VolGroup00-LogVol02 1008M 34M 924M 4% /data
下面斜體部分不是必須的:
其實這裏用什麼分區卻是無所謂,也能夠模擬一個出來,下面是模擬步驟:
1. mkdir /data1/
2. cd /data1/
3. dd if=/dev/zero of=disk1 count=2048000
4. mkfs.ext3 disk1
5. mkdir -p /dfs/a
6. mount -o loop /data1/disk1 /dfs/a
這裏,咱們用/data分區,先拷貝些文件過去
[root@localhost ~]# ]# cp /bin/ls /data/
[root@localhost ~]# ]# cp -rf /bin /data/
[root@localhost ~]# ]# ls -la /data/
total 136
drwxr-xr-x 4 root root 4096 Apr 21 17:37 .
drwxr-xr-x 25 root root 4096 Apr 21 17:11 ..
drwxr-xr-x 2 root root 4096 Apr 21 17:37 bin
drwx—— 2 root root 16384 Apr 21 17:15 lost+found
-rwxr-xr-x 1 root root 93560 Apr 21 17:37 ls
[root@localhost ~]#
一個子目錄一個可執行文件
如今刪除ls文件和bin下面的zcat
[root@localhost ~]# rm /data/ls
rm: remove regular file `/data/ls’? y
[root@localhost ~]# rm /data/bin/zcat
rm: remove regular file `/data/bin/zcat’? y
[root@localhost ~]# ls -la /data/ls /data/bin/zcat
ls: /data/ls: No such file or directory
ls: /data/bin/zcat: No such file or directory
文件沒有了而後咱們來恢復:
首先必須umount掉誤刪除數據的分區:
[root@localhost ~]# umount /dev/mapper/VolGroup00-LogVol02
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
6.2G 1.8G 4.2G 30% /
/dev/sda1 99M 11M 83M 12% /boot
tmpfs 125M 0 125M 0% /dev/shm
確認卸載,而後使用ext3grep來恢復。
[root@localhost ~]# ext3grep /dev/mapper/VolGroup00-LogVol02 --ls --inode 2
這裏會建立掃描分區
[root@localhost ~]# ext3grep /dev/mapper/VolGroup00-LogVol02 --ls --inode 2
[root@localhost ~]# ext3grep /dev/mapper/VolGroup00-LogVol02 --restore-file ls
Running ext3grep version 0.6.0
WARNING: I don’t know what EXT3_FEATURE_COMPAT_EXT_ATTR is.
Number of groups: 8
Minimum / maximum journal block: 585 / 8787
Loading journal descriptors… sorting… done
Number of descriptors in journal: 58; min / max sequence numbers: 2 / 5
Loading VolGroup00-LogVol02.ext3grep.stage2… done
Restoring ls
[root@localhost ~]# ext3grep /dev/mapper/VolGroup00-LogVol02 --restore-file bin/ls
Running ext3grep version 0.6.0
WARNING: I don’t know what EXT3_FEATURE_COMPAT_EXT_ATTR is.
Number of groups: 8
Minimum / maximum journal block: 585 / 8787
Loading journal descriptors… sorting… done
Number of descriptors in journal: 58; min / max sequence numbers: 2 / 5
Loading VolGroup00-LogVol02.ext3grep.stage2… done
Restoring bin/ls
[root@localhost ~]# ls -la RESTORED_FILES/
total 124
drwxr-xr-x 3 root root 4096 Apr 21 18:01 .
drwxr-x— 5 root root 4096 Apr 21 17:55 ..
-rwxr-xr-x 1 root root 93560 Apr 21 17:48 ls
[root@localhost ~]# ext3grep /dev/mapper/VolGroup00-LogVol02 --restore-file bin/zcat
Running ext3grep version 0.6.0
WARNING: I don’t know what EXT3_FEATURE_COMPAT_EXT_ATTR is.
Number of groups: 8
Minimum / maximum journal block: 585 / 8787
Loading journal descriptors… sorting… done
Number of descriptors in journal: 58; min / max sequence numbers: 2 / 5
Loading VolGroup00-LogVol02.ext3grep.stage2… done
Restoring bin/zcat
[root@localhost ~]# ls -la RESTORED_FILES/bin/
total 188
drwxr-xr-x 2 root root 4096 Apr 21 18:01 .
drwxr-xr-x 3 root root 4096 Apr 21 18:01 ..
-rwxr-xr-x 1 root root 62136 Apr 21 17:48 zcat
看看都恢復在RESTORED_FILES目錄下,大小也同樣,這裏RESTORED_FILES目錄是執行ext3grep的當前目錄下!
也可使用:
ext3grep /termite/cc-disk --restore-all
恢復全部文件和目錄,可是目錄的話,若是刪除時間較長,不必定能徹底恢復,壓縮文件通常都能恢復。
若是想詳細的瞭解ext3grep,能夠到它的的HOW TO頁去看看:
http://www.xs4all.nl/~carlo17/howto/undelete_ext3.html
一、刪除/root/shell/hehe下的a文件
二、安裝ext3grep-0.10.1.tar.gz ext3grep命令已經能夠正常使用
三、ext3grep /dev/sda3 --ls --inode 2 建立掃描分區(不明白這步有什麼用,請高手指點)
四、ext3grep /dev/sda3 --restore-file root/shell/hehe/a 恢復文件a
五、ext3grep /dev/sda3 --restore-inode 75631 根基inode