Linux：extundelete（資料恢復）
阿新 • • 發佈：2019-01-11
https://sourceforge.net/projects/extundelete/ [[email protected] ~]# yum install -y e2fsprogs e2fsprogs-devel [[email protected] ~]# tar jxvf extundelete-0.2.4.tar.bz2 [[email protected] ~]# cd extundelete-0.2.4 [[email protected]extundelete-0.2.4]# ./configure [[email protected] extundelete-0.2.4]# make [[email protected] extundelete-0.2.4]# make install [[email protected] ~]# 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. [[email protected] ~]# cd /usr/local/src [[email protected] 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 [[email protected] src]# rm -rf * [[email protected] ~]# umount /usr/local/src [[email protected] ~]# 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 [[email protected] ~]# 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 [[email protected] ~]# 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. [[email protected] ~]# cd RECOVERED_FILES [[email protected] 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