Linux 数据恢复：extundelete

sunny03

https://sourceforge.net/projects/extundelete/
[root@king01 ~]# yum install -y e2fsprogs e2fsprogs-devel
[root@king01 ~]# tar jxvf extundelete-0.2.4.tar.bz2
[root@king01 ~]# cd extundelete-0.2.4
[root@king01 extundelete-0.2.4]# ./configure
[root@king01 extundelete-0.2.4]# make
[root@king01 extundelete-0.2.4]# make install
[root@king01 ~]# 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.
[root@king01 ~]# cd /usr/local/src
[root@king01 src]# ls -l
total 31452
drwxr-xr-x 33 7161 31415     4096 Sep 10 18:23 mysql-5.6.42
-rw-r--r--  1 root root  32201731 Jan 11 16:37 mysql-5.6.42.tar.gz
[root@king01 src]# rm -rf *
[root@king01 ~]# umount /usr/local/src
[root@king01 ~]# extundelete /dev/sdb1 --inode 2
NOTICE: Extended attributes are not restored.
Loading filesystem metadata ... 640 groups loaded.
Group: 0
Contents of inode 2:
0000 | ed 41 00 00 00 10 00 00 f6 55 38 5c 3f 56 38 5c | .A.......U8\?V8\
0010 | 3f 56 38 5c 00 00 00 00 00 00 02 00 08 00 00 00 | ?V8\............
0020 | 00 00 00 00 0f 00 00 00 21 24 00 00 00 00 00 00 | ........!$......
0030 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0040 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0050 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0060 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0070 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0080 | 1c 00 00 00 00 c2 2c 34 00 c2 2c 34 94 0d be 0e | ......,4..,4....
0090 | 70 48 38 5c 00 00 00 00 00 00 00 00 00 00 00 00 | pH8\............
00a0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00b0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00c0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00d0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00e0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00f0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
Inode is Allocated
File mode: 16877
Low 16 bits of Owner Uid: 0
Size in bytes: 4096
Access time: 1547195894
Creation time: 1547195967
Modification time: 1547195967
Deletion Time: 0
Low 16 bits of Group Id: 0
Links count: 2
Blocks count: 8
File flags: 0
File version (for NFS): 0
File ACL: 0
Directory ACL: 0
Fragment address: 0
Direct blocks: 9249, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
Indirect block: 0
Double indirect block: 0
Triple indirect block: 0
File name                                       | Inode number | Deleted status
.                                                 2
..                                                2
mysql-5.6.42.tar.gz                               11             Deleted
mysql-5.6.42                                      1835009        Deleted
[root@king01 ~]# extundelete /dev/sdb1  --restore-file mysql-5.6.42.tar.gz
NOTICE: Extended attributes are not restored.
Loading filesystem metadata ... 640 groups loaded.
Loading journal descriptors ... 3717 descriptors loaded.
Successfully restored file mysql-5.6.42.tar.gz
[root@king01 ~]# extundelete /dev/sdb1 --restore-directory mysql-5.6.42
NOTICE: Extended attributes are not restored.
Loading filesystem metadata ... 640 groups loaded.
Loading journal descriptors ... 3717 descriptors loaded.
Searching for recoverable inodes in directory mysql-5.6.42 ...
15308 recoverable inodes found.
Looking through the directory structure for deleted files ...
2 recoverable inodes still lost.
[root@king01 ~]# cd RECOVERED_FILES
[root@king01 RECOVERED_FILES]# ls -l
total 31452
drwxr-xr-x 33 root root     4096 Jan 11 16:41 mysql-5.6.42
-rw-r--r--  1 root root 32201731 Jan 11 16:41 mysql-5.6.42.tar.gz