I clobbered a bunch of disks

[tr0910]

I have been doing this for over 10 years with unRaid and this is my first big user error.  I was moving a bunch of full array disks between servers and instead of recalculating parity, I made a mistake and unRaid started wiping the disks. 

 

These 5 disks are all XFS and I only allowed it to go for less than 10 seconds, but it was enough to wipe the file system and now unRaid thinks these are unmountable.  I would really like to bring back the XFS file system........

 

Does anyone have any suggestions?  (while I beat myself with a wet noodle)

[JonathanM]

If the data is irreplaceable, you need to clone the drives as they are now, and put them aside to attempt recovery on copies. A file system check would probably be a good first recovery step.

[tr0910]

Thanks, the best advice when something goes wrong, is take a deep breath and do nothing until you've thought it all through.  I should have this backed up, but it will be difficult to access.  I'll have to think carefully.....

[JorgeB]

4 hours ago, tr0910 said:

and I only allowed it to go for less than 10 seconds

xfs_repair should find a backup superblock, but there will likely be some metadata damage, another option is using a file recovery util like UFS explorer.

[tr0910]

XFS_Repair was able to find 2nd superblock on 5 of the 6 affected disks.  But only about 2/3 of the files were recovered, and they all were put in lost and found.  It will be a dog's breakfast to get anything good.  But at least we don't have a total failure. 

 

I do have another backup that I will be pulling from far away that should be able to recover all files.

 

Moral of the story, your backups matter.  2nd moral, human error is a much bigger source of data loss than anything else.