[HOWTO] Recover / Undelete deleted files from NAS

[mostly_clueless]

There have been several entries with questions about the qnap 219 p, and the repeated answer that this method does not work on its processor.

Potential Workaround

this was mentioned elsewhere, as a tip from the qnap service hotline; it would have helped me to find it here.

As I was on Raid 1, it was simple to remove one of the HD and connect it to my PC. Windows 7 didn't mount the drive, although it was available in the control panel. This did not stop PhotoRec, which i unpacked to my C: Drive, from recovering the lost data. The instructions at the beginning of this thread in using PhotoRec were very helpful with the necessary guesswork about which sector set, etc.

I was pretty restrictive about the file types, but still came up with > 10.000 files (and counting) - to replace the 50 or so i erroneously deleted. Happy hunting.

In retrospect, being mostly_clueless about system admin, I should never have bought this product. It has many wonderful features i'm too clueless to set up,
and has too many potential pitfalls which endanger my data. I would need a 'dummies' mode with safeguards and more basic explanations of terms and processes.

thanks, everyone, in particular avvidme, for your assistance!

m_c

[avvidme]

Great work around!

And you're right, QNAP should develop a "wizard based" setup for people who just need reliable storage with a 'best practice' configuration. Would be a great feature.

Cheers

[avvidme]

Glad to be of help!

You also might want to turn on the NAS's "Recycle Bin" feature as well. It's saved me a few times as well.

Cheers

[mrQQ]

I have managed to compile PhotoRec for Marvell / 409 Pro. Hopefully I'll be able to recover my files..

[hugohugo]

Would it be possible for you to post the Marvell compiled photorec anywhere for download?

[avvidme]

Good stuff!!

[avvidme]

Glad it helped!!

[maxinghai]

It is greatly helpful but I'm in a different trouble right now. Accidentally I clicked "RESET" button in the administration interface that the whole system is reset and all partitions are unmounted. I have very limited exeprience in Linux that I don't know what to do to recover my data. Anyone could help? This is bit different from click "Delete".

[avvidme]

It is greatly helpful but I'm in a different trouble right now. Accidentally I clicked "RESET" button in the administration interface that the whole system is reset and all partitions are unmounted. I have very limited exeprience in Linux that I don't know what to do to recover my data. Anyone could help? This is bit different from click "Delete".

You might want to contact QNAP support for this - there is a way to re-create the shares and "hopefully" have your data still in tact. Haven't done it myself though, I would call them to be safe.

[abdur]

Thank you god it worked like a charm

[Marc123]

Thanks for your great sharing!Hope I will never need it!

[Q]

good howto

i don't want to hijack this thread but in case photorec doesn't work for somebody, there's a further (open source) tool called extundelete. it also runs on the ARM nas.

viewtopic.php?f=15&t=43265#p222810

[marcov]

Ok!
So I'm in the same boat!

I tried this very useful option mentioned in this thread. There is just one thing:
I'm not seeing my raid in the list, just the separate HD's. Very little files show up and not what i'm looking for.
What to do?

My raid (ext3) is intact and I can read all the files on it, but no raid in the list......

[Zorlin]

I just had some success with extundelete - saved a bunch of RAW files that I thought were lost. Thanks for all the advice/help everyone!

And to the poster above me: try /dev/md0/ - I used an NFS mount (mount -t nfs IP:share /mnt/tempdisk) to get the files.

[avvidme]

I'll definitely have to try extundelete.

Actually, I hope I never have to try extundelete

Cheers!