Hi - I searched and couldn't quite find the same issue... apologies in advance if this is duplicated somewhere.

 

I am trying to replace a SSD cache drive with an NVMe cache drive. I followed the short instructions here:

Once the array started with the new cache drive, the cache drive reports the error: "Unmountable: Wrong or no file system". I stopped the array and remounted the old SSD cache drive and now receive the same error. I have stopped the array.

 

My filesystem is xfs.... which is why the above didn't work. Is there a way I can now reinstate my old SSD cache drive for now?

 

Thanks

 

Edited January 9, 20233 yr by exoexo

I ran xfs_repair with the following results:

 

 

 

And then I tried the recovery process here:

 

Attempting to mount the drive results in the error: 

 

mount: /temp: wrong fs type, bad option, bad superblock on /dev/sdd, missing codepage or helper program, or other error.
       dmesg(1) may have more information after failed mount system call.

 

Would very much appreciate any help!

 

Edited January 8, 20233 yr by exoexo

A little extra information...

 

Per the faq: I was not able to mount it using "mount -o rescue-all,ro /dev/sdd1 /tempxfs".

 

I was able to mount the disk in a terminal using the command "mount /dev/sdd1 tempxfs".

 

When it was mounted, I observed appdata, data, domains and system directories.

 

EDIT:

Solved this (maybe by accident). Mounted using the above, then used xfs repair again (with the same outcome as above). Started the array and the drive mounted with original files intact.

 

 

Edited January 9, 20233 yr by exoexo
Found solution