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2 disks "Unmountable: Unsupported partition layout" and 1 disk isn't starting.

Featured Replies

  • Community Expert

That error usually means something changed the partition/MBR and it's no longer valid, if parity is valid you can see if the emulated device mounts, since Unraid will recreate the partition, to test unassign of the affected data devices and post new diags after array start.

  • Author

Ok will do that shortly, but how does this happen? Knock on wood, but I haven't had any issues with Synology or when I was running TrueNAS. 

  • Author

When I try to take the array off-line, which I believe is the way I'd unassign them from the array, it just hangs at "Stopping" and doesn't do anything unless I reboot the device. Spinning down all the disks also does nothing. Is there a better way to remove the devices from the array?

 

Under "Historical Devices" there's a "X" to remove a device's configuration, but I'm not sure what that would do exactly.

 

I didn't use Unraid as a NAS server, more like an App Server and have the docker backups on my Synology. So I'm debating whether or not I should just format the disks or not, but what's still disturbing is that Disk 4 has a red "X" next to it saying that the device is disabled, and the contents are emulated. So, somehow 3 of my 4 disks got screwed up.

  • Community Expert

If the array isn't stopping you have other issues, you can disable array auto-start, reboot and then unassign the disk before array start.

  • Author

Another thing that's interesting is that I'm 99% sure that my file system was btrfs, as that's what my Cache device is, and for the array disks it shows "XFS" and in the default settings for disks it also shows "btrfs"

  • Author
10 minutes ago, JorgeB said:

If the array isn't stopping you have other issues, you can disable array auto-start, reboot and then unassign the disk before array start.

 

I'll give that a shot, but I'm also starting to think that this got FUBAR'd somehow. It happened after upgrading to the latest version of Unraid, so unless it's just pure coincidence, the upgrade did something that wreaked havoc on my server.

  • Author

So, I tried removing the devices from the array but it said invalid configuration. The parity drive may very well be messed up as there's no file system specified for it. 

  • Community Expert
1 hour ago, ajtatum said:

I tried removing the devices from the array but it said invalid configuration.

I posted to remove one device.

  • Author
1 hour ago, JorgeB said:

I posted to remove one device.

 

Yea, I tried that too...

 

Left parity drive on and attempted to boot up with disk 1 & 2, 1 & 3, 2 & 3 but disk 3 continued to not mount correctly and disk 1 & 2 showed "Unsupported Partition Layout".

  • Community Expert
4 minutes ago, ajtatum said:

Left parity drive on and attempted to boot up with disk 1 & 2, 1 & 3, 2 & 3 but disk 3 continued to not mount correctly and disk 1 & 2 showed "Unsupported Partition Layout".

Disk3 was mounting according to diags, were were supposed to unassign disk1 or disk2, start array and post new diags.

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