Recovering Data from Parity

[andrewsongca]

Hi All,

 

I've done something really really dumb, and I am now scratching my head.  I have 3 drives.  All of them 16TB each.  I've used 1 disk as a parity, second disk as the btrfs pool.  The third disk is a original NTFS disk which 'had' all of the data in it, later 'cut & pasted' into the pool drive (disk 2).  After everything was done, parity was built successfully.

 

Then the mis-steps happened.  I was having issues connecting to the tower via web browser.  It would would not obey the reboot or shutdown command.  Unraid attempted a forced shutdown, but hung there for a long time.  So I had to manually hard-shutdown the unraid server.  After few retries, I still couldn't not connect to unraid from other machines via web browser, not could I launch the Unraid OS / Gui Mode on the server itself.  it complains it could not connect.  Network card wasn't the issue because I was able to ping the IP just fine.  So I've decided to re-install unraid.  Removed the USB stick, placed it into the PC, reformatted the USB stick, and reinstalled unraid.

 

After this, the USB stick booted up just fine, updated the license and re-added the parity disk into the configuration, then mounted the previous pool disk under 'disk 1'.  Obviously previous shares are no longer there...  Unraid attempted to rebuild parity, but I was able to catch it in time to cancel it.  Here is the current configuraiton

 

Disk1 - Parity (GPT 4K ALIGNED)

  (Same Parity Disk during previous config)

Disk2 - Unraid pool (btrfs  --  Unmountable: Unsupported partition layout)

   (Same Data Pool drive from the previous config)

Disk3 - Original Data.

   (This disk is empty now because when I originally copied the files over, I had 'cut & pasted' from the clip bloard)

 

on Disk 2 (Unrapid Pool), when I copied the files over, I had done so in a single share folder.  With the reinstall, that folder is now gone, and I am not sure what to do.  I am going to shut down Unraid until I can get some directions from you gurus here and see if someone can help me out of this predicament.  I would greatly appreciate any help you can provide, because there are numerous irreplacible photos on that disk, not sure what I'd do if I lose them.  Please help!

 

[andrewsongca]

Update:  I was able to mount the data drive using 'Unassigned Devices' plugin and browse the files at it's mount point.  The question now is: How do I re-activate this drive and restore the share?  Do I need to buy another drive, create a new share, then copy everything over or is there a simple way to re-activate the drive and restore the previous share?

[FreeMan]

It's really frustrating waiting, I know, but someone will be along to help you out. (I'm here twiddling my thumbs until someone can offer some advice on an issue I'm having, so I get you!)

 

In the meantime, Go to Tools | Diagnostics and download the diagnostics for your server, then post the entire zip file in a new message on this thread. That will give one of the experts all the info they'll need to help you out. I'm not the expert here, but someone will be able to help you.

 

In the meantime, the most important thing is to NOT WRITE anything to the server! I get that it's frustrating, but I've seen too many new users attempt to resolve things themselves and end up writing over data that would have most likely been salvageable. I've seen people who thought that clicking "format" was a way to recover data. That's pretty much guaranteed to lose it all or force you to send the drive to a forensic recovery place where they may get your data back for a few hundred bucks...