Recover files that were mistakenly deleted under Linux (note)

Recover files that were mistakenly deleted under Linux

[Email protected] ~]# mount/dev/cdrom/mnt/

Divided into a district: sda4

Search: Extundelete

Divided into a district: sda4

[Email protected] ~]# MKDIR/TMP/SDA4

[email protected] ~]# mkfs.ext4/dev/sda4 Formatting

[[email protected] desktop]# echo $?

0

[Email protected] ~]# mount/dev/sda4/tmp/sda4/

[email protected] ~]# df-th # View disk-related information

[Email protected] desktop]# MOUNT/DEV/SDA4/TMP/SDA4

[Email protected] 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 of the files used to test the deletion:

[Email protected] ~]# cp/etc/passwd/tmp/sda4/

[Email protected] ~]# cp/etc/hosts/tmp/sda4/

[email protected] ~]# vim/tmp/sda4/a.txt #vim Edit A.txt Write some data casually.

[Email protected] ~]# mkdir-p/tmp/sda4/a/b/c

[Email protected] ~]# cp/tmp/sda4/a.txt/tmp/sda4/a

[Email protected] ~]# cp/tmp/sda4/a.txt/tmp/sda4/a/b/

Delete:

[Email protected] ~]# Mkdir/tmp/back

[Email protected] ~]# cp-r/tmp/sda4/*/tmp/back

[Email protected] ~]# cd/tmp/sda4/

[Email protected] ~]# RM-RF passwd hosts a a.txt

[Email protected] ~]# ls/tmp/sda4/

Lost+found

Unmount the partition where the file needs to be recovered: Inode

[[Email protected] sda4]# CD

[Email protected] ~]# umount/tmp/sda4/

Installing the Software Extundelete

[Email protected] ~]# tar jxvf extundelete-0.2.4.tar.bz2

[Email protected] ~]# CD extundelete-0.2.4

[Email protected] extundelete-0.2.4]#./configure

Configuring Extundelete 0.2.4

Configure:error:Can ' t find ext2fs Library # Error

[Email protected] ~]# mount/dev/cdrom/mnt/

[Email protected] extundelete-0.2.4]# rpm-ivh/mnt/packages/e2fsprogs-devel-1.41.12-11.el6.x86_64.rpm

[Email protected] extundelete-0.2.4]#

[[email protected] extundelete-0.2.4]#./configure # Check the installation environment and generate makefile

[[email protected] extundelete-0.2.4]# make # compiling

[[email protected] extundelete-0.2.4]# make install # installation

Find a blog: http://www.cnblogs.com/jjzd/p/5785851.html

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

Start recovery:

Method 1:

To view the deleted file name through the Inode node:

[Email protected] ~]# mkdir test

[Email protected] ~]# CD test/

[Email protected] ~]# EXTUNDELETE/DEV/SDA4--inode 2

。。。

Lost+found 11

passwd Deleted

Hosts Deleted

A 8193 Deleted

A.txt Deleted

To recover from an inode node:

[Email protected] ~]# EXTUNDELETE/DEV/SDA4--restore-inode 12

notice:extended attributes is not restored.

Loading FileSystem metadata ... Groups loaded.

Loading Journal Descriptors ... Descriptors loaded.

[[email protected] ~]# ls recovered_files/# Recovery Success

file.12

[Email protected] test]# diff/etc/passwd/root/test/recovered_files/file.12

Method Two, restore by file name

Method Two, restore by file name

To recover a file:

[Email protected] test]# RM-RF recovered_files/

[Email protected] ~]# extundelete/dev/sda4--restore-file passwd

Restore a directory , such as all files under directory A:

[email protected] ~]# extundelete/dev/sda4--restore-directory a # Recover Directory A, no

Recover all the files

[Email protected] ~]# extundelete/dev/sda4--restore-all

Usage Experience:

An empty directory or an empty file recovery was unsuccessful.

Restore deleted files under Linux (note)