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I didn't know a resize operation on a 750 GB disk was going to take 40+ hours, and I was biting my nails the whole time, until the power went out when "only" 8 hours where left...

I can still mount the partition, and many of the files are still there, but some files show as '? ? ? ? ? filename.ext' with ls -l.

If I try to go inside such a directory: Input/output error.

Are those files lost?

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I just tried photorec and it works, but it also "recovers" files that aren't lost, and files that I don't need. It would take ages to process the entire disk, plus I don't have space in another partition to put all the recovered files, so I only want to recover some of the dirs if at all possible. –  Ivan May 6 '11 at 1:05
    
Saw your comment after I posted my answer below. I believe you'll find the same results from most if not all file recovery software, although something designed specifically for ext4 (e.g. extundelete) may be able to read the file system's meta data to look only within certain directories. –  Kromey May 6 '11 at 1:12
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Yup, I've seen this, on a corrupted ext4 partition no less. (Actually, I thought it was a failed hard drive, and rushed out and bought a whole set of new ones, only to later discover the drives were all fine after all, but that's another story.) You may have success with a utility like extundelete, but I'd wager most if not all of those files are good and gone.

You've got backups though, right? ;-) (I poke fun, but only because I've been there before, which is why I now have a pretty darned thorough backup system.)

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extundelete looked promising with its restore-directory and restore-files options, but no dice :( The files aren't that important so I guess I'll just let it go. PD: I do have backups for my important files, Dropbox FTW! –  Ivan May 6 '11 at 1:32
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