recovery Linux File that has been deleted by mistake

[root@xuegod63 ~]# mount /dev/cdrom /mnt/

It's divided into one area :sda4 

lookup :extundelete

It's divided into one area :sda4 

[root@localhost ~]# mkdir /tmp/sda4

[root@localhost ~]# mkfs.ext4 /dev/sda4      format

[root@xuegod63 Desktop]# echo $?


[root@localhost ~]# mount /dev/sda4 /tmp/sda4/

 [root@localhost ~]# df -Th  # View disk information

[root@xuegod63 Desktop]# mount /dev/sda4 /tmp/sda4

[root@xuegod63 Desktop]# df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/sda2             9.7G  3.8G  5.5G  41% /

tmpfs                 569M  264K  569M   1% /dev/shm

/dev/sda1             194M   28M  157M  15% /boot

/dev/sr0              3.4G  3.4G     0 100% /mnt

/dev/sda4            1012M   34M  928M   4% /tmp/sda4

Copy some files to test deletion :

[root@localhost ~]# cp /etc/passwd /tmp/sda4/

[root@localhost ~]# cp /etc/hosts /tmp/sda4/  

[root@localhost ~]# vim /tmp/sda4/a.txt          #vim edit a.txt Just write some data .

[root@localhost ~]# mkdir -p  /tmp/sda4/a/b/c

[root@localhost ~]# cp /tmp/sda4/a.txt /tmp/sda4/a


[root@localhost ~]# cp /tmp/sda4/a.txt /tmp/sda4/a/b/

Delete :

[root@xuegod63 ~]# mkdir /tmp/back

[root@xuegod63 ~]# cp -r /tmp/sda4/* /tmp/back

[root@xuegod63 ~]# cd /tmp/sda4/

[root@localhost ~]# rm -rf passwd hosts a   a.txt

[root@localhost ~]# ls /tmp/sda4/




Uninstall the partition that needs to recover files :  inode

[root@xuegod63 sda4]# cd

[root@xuegod63 ~]# umount /tmp/sda4/


Install the software extundelete

[root@xuegod63 ~]# tar jxvf extundelete-0.2.4.tar.bz2

[root@xuegod63 ~]# cd extundelete-0.2.4

[root@xuegod63 extundelete-0.2.4]# ./configure

Configuring extundelete 0.2.4

configure: error: Can't find ext2fs library   # Report errors

[root@xuegod63 ~]# mount /dev/cdrom  /mnt/

[root@xuegod63 extundelete-0.2.4]# rpm -ivh /mnt/Packages/e2fsprogs-devel-1.41.12-11.el6.x86_64.rpm

[root@xuegod63 extundelete-0.2.4]#

[root@xuegod63 extundelete-0.2.4]# ./configure  # Check the installation environment and generate Makefile

[root@xuegod63 extundelete-0.2.4]# make  # compile

[root@xuegod63 extundelete-0.2.4]# make install  # install

install e2fsprogs-devel-1.41.12-14.el6.x86_64.rpm

Start recovery :

Method 1:

adopt inode Node to view the deleted file name :

[root@xuegod63 ~]# mkdir test

[root@xuegod63 ~]# cd test/

[root@localhost ~]# extundelete /dev/sda4 --inode 2


lost+found                                        11

passwd                                            12             Deleted

hosts                                             13             Deleted

a                                                 8193           Deleted

a.txt                                             15             Deleted


adopt inode Node to recover :

[root@localhost ~]# extundelete  /dev/sda4 --restore-inode  12

NOTICE: Extended attributes are not restored.

Loading filesystem metadata ... 16 groups loaded.

Loading journal descriptors ... 32 descriptors loaded.

 [root@localhost ~]# ls RECOVERED_FILES/       # Recovery successful


[root@xuegod63 test]# diff /etc/passwd /root/test/RECOVERED_FILES/file.12


Method 2 , Recover... By filename

Method 2 , Recover... By filename

Recover a file :

[root@xuegod63 test]# rm -rf RECOVERED_FILES/

[root@localhost ~]# extundelete /dev/sda4 --restore-file  passwd


Restore a directory , Such as catalogue a All files under :

[root@localhost ~]# extundelete /dev/sda4 --restore-directory   a   # Restore directory a , no need


Recover all files

[root@localhost ~]# extundelete  /dev/sda4 --restore-all     

Use experience :

Empty directory or empty file recovery failed .

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