Hi,

There is an "Unmountable: Unsupported or no file system" disk in my array. (It's the disk 8, the second will be replaced tomorrow).

 

It happened after a crash.
Partitions are xfs.

I tried the check_xfs command in maintenance mode, with or without the -L argument, but no way.

I'm pretty scared, If someone have an idea...

 

Should I zero the disk and rebuild it with the parity ?

 

Thanks a lot.

 

Here's the diag and the result of xfs_repair.

 

_____________________________________________________

 

TLTR : 

 

xfs_repair didn't help me. Even the beta 7.0.

Using UFS Explorer in another setup was the solution. (The only "trick" to do is to select the right system file format, xfs)

 

Investigation still ongoing: percentage of dataloss. Pretty low I guess.

xfs log.txt unraid-diagnostics-20240726-1819.zip

Edited July 27, 20241 yr by Fefepaille
Topic solved

xfs_repair is failing, you can try 7.0.0-beta, since it includes a newer version, if the same, the best bet will be using a file recovery app, like UFS explorer.

Thanks for your quick answer !

 

Ok I'm trying it. 

 

If no good result, the parity can't help me ? Zeroing the disk and rebuilt it will result a data loss ?

 

I never had very good results with recovery tools... 

Well.

Let's try UFS explorer.

57 minutes ago, Fefepaille said:

f no good result, the parity can't help me ?

Parity can't usually help with filesystem corruption issues.

Agreed, With the array and parity on, some of my files vanished.

 

Do you have any tips with UFS Explorer ?

 

=> Doing a recovery. Praying for a pretty good result. 

 

Thanks again.

 

 

Edited July 26, 20241 yr by Fefepaille

Not really since I've never used it, but should be pretty straight forward, the trial version should show if it's able to recover any data or not.

Well, UFS works pretty well. I got like.... 40GB of soup. (maybe old removed files)

The rest (about 7TB) are ok, with a correct structure.

 

I'll just "format" the drive after the backup, and the show must go on !

 

But I've got a last question : is the xfs file system strong enough ? Theses last 24h were painfull af, don't wan't to do this again !

 

Thank you again.

Edited July 27, 20241 yr by Fefepaille

Xfs is usually pretty good at recovering from filesystem corruption, but sometimes it can't, still probably the better of the 3 available for that, consider having some backups, at least of the really important stuff.

Ok. 

Recovery with XFS seems to be pretty good, doin' it.

 

Not all heroes wear capes.

Thanks again.