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针对于ext4文件系统数据恢复软件，看了网上好多都在介绍extundelete这个工具，下载最新版本实验时（在Centos5.8、Centos6.7上实验效果不是很好）。最终发现ext4magic对于ext4数据恢复支持还是非常强大的。也可以做到基于时间点、inode、指定文件恢复等等。恢复时需要卸载分区，以只读方式挂载恢复。具体软件下载地址为： 1、安装 可以参考官方INSTALL文件进行安装，如有依赖需处理好包依赖方可进行安装。系统必须安装make、file 、gcc工具。以下libmagic、libext2fs、libz、libbz2库必须安装， # tar -xzf ext4magic-0.3.2.tar.gz # cd ext4magic-0.3.2 # ./configure # make # make install 2、测试 (1)、基于时间恢复（以1970-01-01 00:00:00 UTC的秒数开始计算） [root@jason1 ~]# mount /dev/sdb1 /media/ [root@jason1 ~]# cp -rp /boot/* /media/ [root@jason1 ~]# cd /media/ [root@jason1 media]# ll total 34884 -rw-r--r--. 1 root root 107134 Jul 24 00:13 config-2.6.32-573.el6.x86_64 drwxr-xr-x. 3 root root 4096 Dec 10 19:20 efi -rw-r--r--. 1 root root 166756 Jul 20 2011 elf-memtest86+-4.10 drwxr-xr-x. 2 root root 4096 Dec 10 19:33 grub -rw-------. 1 root root 27925110 Dec 10 19:31 initramfs-2.6.32-573.el6.x86_64.img drwx------. 2 root root 16384 Dec 10 18:17 lost+found -rw-r--r--. 1 root root 165080 Jul 20 2011 memtest86+-4.10 -rw-r--r--. 1 root root 205998 Jul 24 00:14 symvers-2.6.32-573.el6.x86_64.gz -rw-r--r--. 1 root root 2585052 Jul 24 00:13 System.map-2.6.32-573.el6.x86_64 -rw-r--r--. 1 root root 289193 Oct 15 2014 tboot.gz -rw-r--r--. 1 root root 12277 Oct 15 2014 tboot-syms -rwxr-xr-x. 1 root root 4220560 Jul 24 00:13 vmlinuz-2.6.32-573.el6.x86_64 [root@jason1 media]# date Mon Dec 14 19:36:06 CST 2015 [root@jason1 media]# rm -rf * [root@jason1 media]# cd [root@jason1 ~]# umount /dev/sdb1 [root@jason1 ~]# mount -o ro /dev/sdb1 /media [root@jason1 ~]# ext4magic /dev/sdb1 -d /home -a 1450086000 -m 3##改时间通过date命令获取当前时间秒数减去3600秒得来。 Warning: Activate magic-scan or disaster-recovery function, may be some command line options ignored "/home" accept for recoverdir Filesystem in use: /dev/sdb1 Using internal Journal at Inode 8 Activ Time after : Mon Dec 14 17:40:00 2015 Activ Time before : Mon Dec 14 19:44:26 2015 Inode 2 is allocated -------- /home/config-2.6.32-573.el6.x86_64 -------- /home/efi/EFI/redhat/grub.efi -------- /home/elf-memtest86+-4.10 -------- /home/grub/menu.lst -------- /home/grub/reiserfs_stage1_5 -------- /home/grub/e2fs_stage1_5 -------- /home/grub/xfs_stage1_5 -------- /home/grub/fat_stage1_5 -------- /home/grub/stage1 -------- /home/grub/iso9660_stage1_5 -------- /home/grub/splash.xpm.gz -------- /home/grub/vstafs_stage1_5 -------- /home/grub/ufs2_stage1_5 -------- /home/grub/device.map -------- /home/grub/stage2 -------- /home/grub/ffs_stage1_5 -------- /home/grub/minix_stage1_5 -------- /home/grub/jfs_stage1_5 -------- /home/grub/grub.conf -------- /home/initramfs-2.6.32-573.el6.x86_64.img -------- /home/memtest86+-4.10 -------- /home/symvers-2.6.32-573.el6.x86_64.gz -------- /home/System.map-2.6.32-573.el6.x86_64 -------- /home/tboot.gz -------- /home/tboot-syms -------- /home/vmlinuz-2.6.32-573.el6.x86_64 MAGIC-1 : start lost directory search MAGIC-2 : start lost file search MAGIC-2 : start lost in journal search MAGIC-3 : start ext4-magic-scan search -------- /home/MAGIC-3/text/plain/0000028685.txt -------- /home/MAGIC-3/text/plain/0000045944.txt ext4magic : EXIT_SUCCESS 验证是否恢复成功 [root@jason1 ~]# cd /home/ [root@jason1 home]# ll total 34872 -rw-r--r--. 1 root root 107134 Jul 24 00:13 config-2.6.32-573.el6.x86_64 drwx------. 3 root root 4096 Dec 14 19:44 efi -rw-r--r--. 1 root root 166756 Jul 20 2011 elf-memtest86+-4.10 drwx------. 2 root root 4096 Dec 14 19:44 grub -rw-------. 1 root root 27925110 Dec 10 19:31 initramfs-2.6.32-573.el6.x86_64.img drwx------. 3 root root 4096 Dec 14 19:44 MAGIC-3 -rw-r--r--. 1 root root 165080 Jul 20 2011 memtest86+-4.10 -rw-r--r--. 1 root root 205998 Jul 24 00:14 symvers-2.6.32-573.el6.x86_64.gz -rw-r--r--. 1 root root 2585052 Jul 24 00:13 System.map-2.6.32-573.el6.x86_64 -rw-r--r--. 1 root root 289193 Oct 15 2014 tboot.gz -rw-r--r--. 1 root root 12277 Oct 15 2014 tboot-syms -rwxr-xr-x. 1 root root 4220560 Jul 24 00:13 vmlinuz-2.6.32-573.el6.x86_64 [root@jason1 home]# （2）、整个文件系统恢复 [root@jason1 ~]# ext4magic /dev/sdb1 -d /home -m Warning: Activate magic-scan or disaster-recovery function, may be some command line options ignored "/home" accept for recoverdir Filesystem in use: /dev/sdb1 Using internal Journal at Inode 8 Activ Time after : Mon Dec 14 19:36:37 2015 Activ Time before : Mon Dec 14 19:56:58 2015 Inode 2 is allocated -------- /home/config-2.6.32-573.el6.x86_64 -------- /home/efi/EFI/redhat/grub.efi -------- /home/elf-memtest86+-4.10 -------- /home/grub/menu.lst -------- /home/grub/reiserfs_stage1_5 -------- /home/grub/e2fs_stage1_5 -------- /home/grub/xfs_stage1_5 -------- /home/grub/fat_stage1_5 -------- /home/grub/stage1 -------- /home/grub/iso9660_stage1_5 -------- /home/grub/splash.xpm.gz -------- /home/grub/vstafs_stage1_5 -------- /home/grub/ufs2_stage1_5 -------- /home/grub/device.map -------- /home/grub/stage2 -------- /home/grub/ffs_stage1_5 -------- /home/grub/minix_stage1_5 -------- /home/grub/jfs_stage1_5 -------- /home/grub/grub.conf -------- /home/initramfs-2.6.32-573.el6.x86_64.img -------- /home/memtest86+-4.10 -------- /home/symvers-2.6.32-573.el6.x86_64.gz -------- /home/System.map-2.6.32-573.el6.x86_64 -------- /home/tboot.gz -------- /home/tboot-syms -------- /home/vmlinuz-2.6.32-573.el6.x86_64 MAGIC-1 : start lost directory search MAGIC-2 : start lost file search MAGIC-2 : start lost in journal search MAGIC-3 : start ext4-magic-scan search -------- /home/MAGIC-3/text/plain/0000028685.txt ext4magic : EXIT_SUCCESS [root@jason1 ~]# （3）、指定文件恢复 [root@jason1 ~]# ext4magic /dev/sdb1 -r -f grub/grub.conf -d /home "/home" accept for recoverdir Filesystem in use: /dev/sdb1 Using internal Journal at Inode 8 Inode found "grub/grub.conf" 655377 -------- /home/grub/grub.conf ext4magic : EXIT_SUCCESS [root@jason1 ~]# cd /home/ [root@jason1 home]# ll total 4 drwx------. 2 root root 4096 Dec 14 20:08 grub [root@jason1 home]# ll grub/grub.conf -rw-------. 1 root root 843 Dec 10 19:33 grub/grub.conf [root@jason1 home]# 指定文件恢复时，需要注意指定恢复文件的路径书写问题。以下给出官方的示例： An example: the mount point for this filesystem is " /home " an the filename for Linux is " /home/usr1/Document " you can use now # ext4magic /dev/sda3 -f usr1/Document （去掉挂在点目录指定文件目录）。 |
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