我需要在 sda7 上恢复文件，所以我重新挂载了 ro 并启动了 extundelete
manuel@P5KC:~/recovery/RECOVERED_FILES$ sudo extundelete --restore-all /dev/sda7
WARNING: Extended attributes are not restored.
Loading filesystem metadata ... 688 groups loaded.
Loading journal descriptors ... 18110 descriptors loaded.
Writing output to directory RECOVERED_FILES/
Searching for recoverable inodes in directory / ...
1554 recoverable inodes found.
Looking through the directory structure for deleted files ...
Unable to restore inode 2228446 (lost+found/latex): No data found.
但目录RECOVERED_FILES是空的。是我做错了什么还是我的数据丢失了？文件系统是 ext4。最后，以 su 身份登录时，我甚至遇到了分段错误。
Debian Wheezy 3.2.0-4-amd64