[6.9.2] [SOLVED] Adding drive to array "Disk in parity slot is not the biggest."

[rational_tech]

Hi All,

 

I seem to be unable to add a new drive to my array, even though they are all the same size.

The drives are all 2TB, and everywhere I look they are reported as exactly the same size.

 

What I've tried (which didn't work!)

- Re-formatting the drive

- Re-seating the drive

- Checking the "HPA" status - disabled on all drives

 

I've attached some screenshots and the system diagnostics - anyone got any ideas?

 

Array of 3 drives

 

Array to add Disk 3

 

Error

 

Cheers!

 

 

 

Edited September 30, 2021 by rational_tech
marking solved

[JorgeB]

Please post output of

fdisk -l /dev/sdc

 

[rational_tech]

sdc

root@server:~# fdisk -l /dev/sdc

Disk /dev/sdc: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors

Disk model: WDC WD20EARS-00M

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0x00000000

 

Device     Boot Start        End    Sectors  Size Id Type

/dev/sdc1          64 3907029167 3907029104  1.8T 83 Linux

 

Parity Drive

root@server:~# fdisk -l /dev/sdg

Disk /dev/sdg: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors

Disk model: WDC WD20EARX-00P

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: EEFA2B52-1E74-EC4C-A048-B0FDCE7C20CB

 

Device     Start        End    Sectors  Size Type

/dev/sdg1   2048 3907029134 3907027087  1.8T Linux filesystem

[JorgeB]

That is the problem, parity partition starts on sector 2048, so it's smaller than the other one, normal starting sector for Unraid is sector 64 (except for non rotational devices), so you'd need to wipe parity first and let Unraid repartition it.

[rational_tech]

That’s really strange, the parity was wiped by Unraid so not sure why it was setup non-standard.

 

What’s the easiest way to reinit the parity?

[JorgeB]

Erase current partition with fdisk and let Unraid recreate it, you'll need to re-sync parity.

[rational_tech]

Thanks JorgeB - this worked and now have added the other drive in as well.