Force use "wrong" disk

[Noim]

Hi guys,

 

Because of the rising energy costs, I decided to move my drives from my r710 to a more energy efficient hardware. In my r710 I used a PERC card which just passed the disk to the system. Because of this, the disk are now called different. This is why unraid says they are the wrong disks. But they are not. 

 

 

Both disk just contain the file system, and were not used with any raid feature of the PERC card. I verified this with Unassigned Devices. 

 

How can I force unraid to accept the renamed drives?

 

Greetings Nils

 

Edit:

 

I don't have any parity disk. Just this 2 drives. Both a xfs (formatted by unraid). 

 

What happens if I just add both drives as drive 3 and 4? Will unraid format them again? Or just use these with their files? 

Edited October 22, 2022 by Noim
Add more infos

[JorgeB]

Go to Tools and do a New Config.

[Noim]

What will happen if I start the array with the new config? Will it wipe my drives? I mean, they are formatted correctly with xfs by unraid. I can't remember if unraid prompts you first, or just format automatically. 

[JorgeB]

2 minutes ago, Noim said:

Will it wipe my drives?

No, unless you assign them as parity, it won't touch data drives, though because they were on a raid controller there's a chance it won't like the partition layout, but it still won't delete anything.

[Noim]

Yes, he doesn't like the partition layout. Any way to fix this? 

[JorgeB]

Easiest way is to use a new disk, let Unraid format it, then mount the old disk with UD and transfer the data, other option is to add parity and then rebuild one disk at a time, Unraid will recreate the partitions.

[Noim]

Easy is very expensive and cost more time. What are some other options? 

 

This is the fdisk output:

 

Disk /dev/sdb: 7.28 TiB, 8001563222016 bytes, 15628053168 sectors
Disk model: WDC WD80EZAZ-11T
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 8253E41B-E414-4985-BD29-FBE663B171ED

Device     Start         End     Sectors  Size Type
/dev/sdb1     64 15626928094 15626928031  7.3T Linux filesystem

 

Edited October 22, 2022 by Noim

[itimpi]

If it is only the disk name that has changed but the partitions are OK then it is highly likely that the New Config option will ‘Just Work’.    

[JorgeB]

Starting sector is correct but the partition is not using the full disk capacity, and Unraid requires that, it should be possible to resize or just create a new partition on top of that one with the same starting sector but using the full disk and if that is the only issue Unraid should then accept it, but it's not something I can try so cannot say for sure if it will work or not.