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Two Failed Drives - One Parity & One Data - Replacement Order?

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Hello all, I've got two 10TB drives that have failed, the first is Parity 1, and the other is drive 11. I couldn't find any 10TB locally, but ended up with two 12TB drives.  Is there a way for me to replace the parity drives with the new 12TB and then use the existing remaining good parity drive for the drive 11 replacement?  Does the Parity swap procedure work with multiple failed drives?  Screenshot and diags attached.
 

Unraid.png

raptor-unraid-diagnostics-20240118-1631.zip

Solved by JorgeB

  • Author
10 hours ago, JorgeB said:

I would add new parity1 first, then do a parity swap for the other disk.

Thanks, i'll give this a shot.  Appreciate the reply.

  • 2 weeks later...
  • Author

Sorry it's been a bit since I replied, but I ended up having issues with my server I've been trying to sort out. 

I managed to get one of the 12TB drives added as parity, and that was good and the process completed without issues.  I then attempted the parity swap procedure for the remaining 12TB / bad drive following the process linked.  This got to about 80% and the server rebooted.  I had several other issues with reboots attempting the process again so I finally just removed the second parity drive from the config, and physically removed the failed 10TB data drive & assigned the old 10TB parity to the failed data drive and let the data-rebuild process take over.  This completed without issues.

 

All drives have a green dot, but the rebuilt drive shows "Unmountable: Wrong or no file system"  Do I need another reboot, or do I need to format the unmountable disk?

 

image.thumb.png.823d2e10b7b5c301d7a422d17316c247.png

image.thumb.png.7f1904294fc68b0d408d607bd0a16a37.png

raptor-unraid-diagnostics-20240130-0937.zip

Check filesystem on disk11, run it without -n.

 

P.S. several disk related issues logged, look like a power/connection issue, PSU could be on the way out.

  • Author

Thanks for the guidance.  Looks like it made some changes.  Attached is the results. 

diskcheck_output.txt

Disk is mounting now, check contents, also look for a lost+found folder.

  • Author

It is mounted, and there is a lost and found folder with tons of files and folders.  Guessing there's not an automated way to get those back where they were?  Can I use something like krusader to move them without too much issue?

14 hours ago, philosoraptor said:

Guessing there's not an automated way to get those back where they were?

I'm afraid not.

 

14 hours ago, philosoraptor said:

Can I use something like krusader to move them without too much issue?

You can.

16 hours ago, philosoraptor said:

Guessing there's not an automated way to get those back where they were?

The whole point of the lost+found folder is that the files in there are ones for which Unraid could not locate the directory entries required to give them their correct path or filename.  You may find therefore find files or folder with cryptic numeric names and in such cases it takes a manual operation to work out what their names should be.   The Linxux 'file' command can help with that by at least telling you the type of the any files that are there.

  • Author

Thanks for the info, and guidance itimpi & JorgeB.

 

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