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Jul
25
是的，我知道ext3文件系统上，一旦文件被删除(rm -rf )，就几乎没有恢复的可能。而且从ext3文件系统的FAQ中提到的一条也能印证这点：
但是，但是，这不是事实的全部，被删除文件的所有信息可能都还在磁盘上，包括块指针。ext3grep通过分析文件系统日志，实现了恢复被删除文件的功能。
引用
Q: How can I recover (undelete) deleted files from my ext3 partition?
Actually, you can’t! This is what one of the developers, Andreas Dilger, said about it:
In order to ensure that ext3 can safely resume an unlink after a crash, it actually zeros out the block pointers in the inode, whereas ext2 just marks these blocks as unused in the block bitmaps and marks the inode as “deleted” and leaves the block pointers alone.
Your only hope is to “grep” for parts of your files that have been deleted and hope for the best.
Actually, you can’t! This is what one of the developers, Andreas Dilger, said about it:
In order to ensure that ext3 can safely resume an unlink after a crash, it actually zeros out the block pointers in the inode, whereas ext2 just marks these blocks as unused in the block bitmaps and marks the inode as “deleted” and leaves the block pointers alone.
Your only hope is to “grep” for parts of your files that have been deleted and hope for the best.
但是，但是，这不是事实的全部，被删除文件的所有信息可能都还在磁盘上，包括块指针。ext3grep通过分析文件系统日志，实现了恢复被删除文件的功能。
