Disk is unmountable

[splnut]

The other day I noticed that I was affected by the Marvell firmware issue (http://lime-technology.com/forum/index.php?topic=40683.0). When I accessed unRAID, there were 3 disks missing. I shutdown the array, checked the connections, upgraded the Marvell firmware and started it back up. All the drives are found, except 1 disk is showing unmountable.

 

Following the unraid wiki, I started the array in maintenance mode and ran xfs_repair.

 

Phase 1 - find and verify superblock...

bad primary superblock - bad magic number !!!

 

attempting to find secondary superblock...

...Sorry, could not find valid secondary superblock

Exiting now.

 

What are my next steps? Should I let unRAID format the drive and rebuild data?

tower-diagnostics-20160307-1834.zip

[JorgeB]

It’s late here and I’m going to bed, just some quick observations:

 

-Don’t hit format, that won’t help in any circumstance.

-Disk7 is disabled and unmountbale, rebuilding it will result in the same issue, as you're seeing the emulated disk, the end result of a rebuild.

-Looks like disk3 dropped offline, it’s showing errors and no SMART info, is it still green?

 

Post a screenshot of your mainpage.

 

[splnut]

Here is a screenshot. I saw the disk3 errors as well, and when I restated the server I got a green notification about disk3. Although it's had a green ball the whole time.

 

I think I will just not use the marvel controller to avoid further issues, but hopefully can prevent any data loss.

[JorgeB]

The marvell virtualization issue usually manifests itself differently, with vt-d enable you can’t see any disks, they don’t usually drop out, but disable vt-d if you can just in case, or better yet and if you have one, use a different controller for now.

 

If you rebooted since the first diagnostics post a new one to see if there’s a SMART report for disk3.

 

[splnut]

Here is the disk 3 smart report and a new diagnostics after a reboot.

tower-smart-20160308-0742.zip

tower-diagnostics-20160308-0743.zip

[JorgeB]

Since rebuilding disk7 won’t make any difference and the disk itself looks healthy I would try a new config with the actual disk, for now without parity.

 

-Go to tools and click new config

-Reassign all disks except parity (no disk in the parity slot)

-Start array and check if disk7 mounts

 

Don’t write or delete anything from the array or you'll invalidate parity.

 

[splnut]

That appears to work. Should I now assign the parity disk and start the array?

[JorgeB]

You can, but since your system is not very stable it may not complete.

 

At least disable vt-d in your bios in case it has something to do with the marvell issue.

 

If you have irreplaceable data that is not backup up on another place probably a good time to copy the most important stuff before doing the parity sync.