Unmountable: Unsupported partition layout after upgrading 6.8.? to 6.9.0

[Ymetro]

Since I updated/upgraded the Unriad server to version 6.9.0 the Disk1 of the array says "Unmountable: Unsupported partition layout" and Partition format says "factory-erased", but that was not the case: it was formatted, running fine and filled to the brim with data when it was running under Unraid 6.8!

 

I did a maintenance mode check on it like it was recommended on this forum: 

But it didn't seem to fix the problem. 

😢Sadly I have no parity secured array to recover the disk with, because two of my disks have errors and where disabled by the system and I yet have to RMA them. 1 of them was the parity drive. 

🍀Luckily I still got warranty on both those drives. I got the impression both disks where from Amazon. And I am not so confident that Amazon handels these harddrives well enough. 🤔

 

🙏Hopefully only the Steam game library was on there and can be redownloaded. 

I like to know if there is anything that can be done to fix this before I throw in the towel and format the drive for the array.

Anyone got any idea if this can be fixed? 

Edited April 7, 2021 by Ymetro
added reason

[Ymetro]

Disk check gave this:

 

Phase 1 - find and verify superblock...
Phase 2 - using internal log
        - zero log...
        - scan filesystem freespace and inode maps...
        - found root inode chunk
Phase 3 - for each AG...
        - scan (but don't clear) agi unlinked lists...
        - process known inodes and perform inode discovery...
        - agno = 0
        ...
        - agno = 12
        - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
        - setting up duplicate extent list...
        - check for inodes claiming duplicate blocks...
        - agno = 0
        ...
        - agno = 12
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
        - traversing filesystem ...
        - traversal finished ...
        - moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
No modify flag set, skipping filesystem flush and exiting.

 

Edited April 7, 2021 by Ymetro
put into codeblock

[JorgeB]

Does it mount if you back to v6.8?

[Ymetro]

6 hours ago, JorgeB said:

Does it mount if you back to v6.8?

Have already updated to 6.9.1 and according to the Tools section I can only rollback to 6.9.0.
Is there a way to rollback any further to 6.8? 

[trurl]

Download 6.8.3 from DOWNLOADS page and replace all bz* files on flash with those from download.

[Ymetro]

12 hours ago, trurl said:

Download 6.8.3 from DOWNLOADS page and replace all bz* files on flash with those from download.

I did what you said and went ahead making a backup of the entire USB for: "just in case". 

 

Now my server is back up and running 6.8.3 AND it shows Disk1 agian!! Awesome! 👍🥳

 

I didn't knew changing versions was this easy. 😎

 

O: I only had to reactivate the cache pool - good that I made a screenshot earlier for the right order. 

 

Should I stay on 6.8.3 or try again with 6.9.2? 🤔

Edited April 8, 2021 by Ymetro
added cache pool missing notice

[JorgeB]

Please post output of:

 

hexdump -C -n 512 /dev/sdX

 

replace X with correct letter.

[Ymetro]

It gives for Disk1:

 

00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001c0  02 00 00 ff ff ff 01 00  00 00 ff ff ff ff 00 00  |................|
000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
00000200

 

What does this say about this disk?

Edited April 8, 2021 by Ymetro

[JorgeB]

IIRC disk has a different MBR signature and due to a bug Unraid doesn't consider it a valid partition, LT was suppose to fix this but guess it fell though the cracks, you should create  a bug report.

[Ymetro]

I submitted the bug report, including above findings. 
I await their recommendations before any upgrading to 6.9.
Thank you @JorgeB and @trurl for helping me out! 🙏👍

I'll report back when this is fixed. 

[JorgeB]

30 minutes ago, Ymetro said:

I submitted the bug report,

That is also OK but I meant creating a bug report here:

https://forums.unraid.net/bug-reports/stable-releases/