Hi all

I've tried replacing one of my data disks with a larger one (XFS file system if that makes a different).

During the initial rebuilding of the data on the new disk, the server froze (no display, no ping, no nothing).

Searched the forum, found this post which indicated a rebuild will start over if interrupted...

Totally shut down the UPS (the server power button didn't respond at all) and after starting the server again, the array did a parity rebuild (which took more then a day)...

Unfortunately, the new (bigger) disk now appears "Unmountable: wrong or no file system".

Now what?

Did I lose all the data of the replaced disk?

Please advice ☹️

Please post the diagnostics (and don't format the disk)

small-diagnostics-20250821-2243.zip

Thanks in advance

Aug 20 17:15:13 Small kernel: XFS (md6p1): Corruption detected. Unmount and run xfs_repair

Check filesystem on disk6

22 minutes ago, JorgeB said:

Aug 20 17:15:13 Small kernel: XFS (md6p1): Corruption detected. Unmount and run xfs_repair

Check filesystem on disk6

Thank you 🙏🙏🙏

Can this be done when array started or should I stop the array and start again in maintenance mode?

Will it require rebuilding the parity from scratch?

Currently have dual parity set up…

4 minutes ago, gshlomi said:

start again in maintenance mode?

This is required.

4 minutes ago, gshlomi said:

Will it require rebuilding the parity from scratch?

No.

Normally when you get this then parity also reflects the same file system corruption (unless perhaps you are also showing the disk as disabled and being emulated) .

When you run the repair from the GUI then parity is automatically updated accordingly to reflect the repair.

@JorgeB @itimpi you guys are the greatest 🫡

After stopping and starting the array again in maintenance mode, checked and fixed the file system (zeroing the corrupted log file), I'm now able to see the files on the replaced drive.

Now I've mounted the older (replaced) drive using Unassigned Devices, and running a Total Commander directories comparison to check if any files are lost or corrupted.

Thanks again for the assistance guys and have a great day!!!