DISK IN PARITY SLOT IS NOT BIGGEST - replacing failed drive

[Rich Minear]

I have a two-parity drive system that contains Western Digital ST12000NM0127 Drives (12 TB).  

 

I have a failed drive that is a Toshiba 3TB drive.  I'm replacing it with another Western Digital ST12000NM0127 Drive (12TB).

 

I shut down the array, turned of the server.  Replaced the drive, and started it back up.  

 

When I go to replace Disk1 (which is missing now), I see the new drive.  But I get the error:  "Disk in Parity slot is not the biggest".  

 

Not sure where to go next.....

swissarmy-diagnostics-20240722-1312.zip

[JorgeB]

It does look like the new disk is slightly larger, post the output of

fdisk -l /dev/sdX

for the new disk and both parity drives

[Rich Minear]

/dev/sdc = new drive

/dev/sdf = 1st parity drive

/dev/sdg = 2nd parity drive

 

 

root@swissarmy:~# fdisk -l /dev/sdc
Disk /dev/sdc: 10.92 TiB, 12001339219968 bytes, 23440115664 sectors
Disk model: ST12000NM0127   
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
root@swissarmy:~# 
root@swissarmy:~# 
root@swissarmy:~# fdisk -l /dev/sdf
Disk /dev/sdf: 10.91 TiB, 12000138625024 bytes, 23437770752 sectors
Disk model: ST12000NM0127   
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: CACBBE2B-BBCA-4E51-B450-06A31CE2595A

Device     Start         End     Sectors  Size Type
/dev/sdf1     64 23437770718 23437770655 10.9T Linux filesystem
root@swissarmy:~# fdisk -l /dev/sdg
Disk /dev/sdg: 10.91 TiB, 12000138625024 bytes, 23437770752 sectors
Disk model: ST12000NM0127   
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: BA5F0623-3045-41C4-B5F7-820D1431CB13

Device     Start         End     Sectors  Size Type
/dev/sdg1     64 23437770718 23437770655 10.9T Linux filesystem
root@swissarmy:~# 

[JorgeB]

7 hours ago, Rich Minear said:

Disk /dev/sdc: 10.92 TiB, 12001339219968 bytes, 23440115664 sectors

 

7 hours ago, Rich Minear said:

Disk /dev/sdf: 10.91 TiB, 12000138625024 bytes, 23437770752 sectors

 

That confirm the new disk is larger, this is uncommon, any of the drives came from USB enclosures?

 

Solution is to do a parity swap.

[Rich Minear]

That was what I thought might need to happen, but wasn't sure.  First time running across this.  And it worked like a charm.  Since I had a Dual Parity system, I was able to swap out one of the parity drives and it ran for about 24 hours.  Then I was able to take the old parity drive and use it as the new data drive.  

 

Thanks for the excellent help!!!

 

rm