extundelete数据恢复

需要安装的依赖包：

1. e2fsprogs软件包已安装
2. e2fsprogs-libs软件包已安装
3. e2fsprogs-devel软件包已安装
4. gcc软件包已安装
5. gcc-c++ 软件包已安装
6.下载extundelete
http://nchc.dl.sourceforge.net/project/extundelet
e/extundelete/0.2.4/extundelete-0.2.4.tar.bz2

yum install -y gcc gcc-c++ e2fsprogs e2fsprogs-devel  e2fsprogs-libs

#编译安装：

cd extundelete-0.2.4/

./configure

make && make install

#验证是否安装成功
extundelete -v

#切换到需要恢复的上层目录，查看文件节点：

ls -i

#检测到”delete”标记所删除的文件

extundelete /dev/sda2 --inode 2

#被删文件会恢复到当前目录下的RECOVERED_FILES目录中去
extundelete --restore-file a.txt /dev/sdb1
或#
extundetele --restore-inode i
节
点
号
/
dev/sdb1
# 查看恢复文件
# cd RECOVERED_FILES/
# ls -l

查看帮助：

extundelete --help

Usage: extundelete [options] [--] device-file
Options:
--version, -[vV] Print version and exit successfully.
--help, Print this help and exit successfully.
--superblock Print contents of superblock in addition to the rest.
If no action is specified then this option is implied.
--journal Show content of journal.
--after dtime Only process entries deleted on or after 'dtime'.
--before dtime Only process entries deleted before 'dtime'.
Actions:
--inode ino Show info on inode 'ino'.
--block blk Show info on block 'blk'.
--restore-inode ino[,ino,...]
Restore the file(s) with known inode number 'ino'.
The restored files are created in ./RECOVERED_FILES
with their inode number as extension (ie, file.12345).
--restore-file 'path' Will restore file 'path'. 'path' is relative to root
of the partition and does not start with a '/'
The restored file is created in the current
directory as 'RECOVERED_FILES/path'.
--restore-files 'path' Will restore files which are listed in the file 'path'.
Each filename should be in the same format as an option
to --restore-file, and there should be one per line.
--restore-directory 'path'
Will restore directory 'path'. 'path' is relative to the
root directory of the file system. The restored
directory is created in the output directory as 'path'.
--restore-all Attempts to restore everything.
-j journal Reads an external journal from the named file.
-b blocknumber Uses the backup superblock at blocknumber when opening
the file system.
-B blocksize Uses blocksize as the block size when opening the file
system. The number should be the number of bytes.
--log 0 Make the program silent.
--log filename Logs all messages to filename.
--log D1=0,D2=filename Custom control of log messages with comma-separated
Examples below: list of options. Dn must be one of info, warn, or
--log info,error error. Omission of the '=name' results in messages
--log warn=0 with the specified level to be logged to the console.
--log error=filename If the parameter is '=0', logging for the specified
level will be turned off. If the parameter is
'=filename', messages with that level will be written
to filename.
-o directory Save the recovered files to the named directory.
The restored files are created in a directory
named 'RECOVERED_FILES/' by default.