Disk in parity slot is not biggest.

[Aldamir]

Hi,

i wanted to add a WD Blue 6TB to my two WD Red Plus (1 Parity, 1 Array) but i always get the message in the title. 

 

I've also read that HPA might be the problem, but the new drive has this output:

Quote

/dev/sdc:

SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 04 51 40 00 21 04 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 04 51 40 01 21 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

max sectors   = 11721045168/1(1?), HPA setting seems invalid (buggy kernel device driver?)

 

The parity:

 

Quote

dev/sde:

max sectors   = 11721045168/11721045168, HPA is disabled

 

Any ideas - i also wrote the WD Support already.

Thanks a lot! 

[JonathanM]

diagnostics and a brief description of the hardware involved (controller, enclosures, etc) would be helpful.

[Aldamir]

Up till now i had two 6 TB WD Red Plus (1 parity, 1 array), 1 500 MX SSD as cache and wanted to add the spare 6 TB WD Blue HDD to the array. 

Right now, my system is on 6.11.0-rc3. 

 

Thanks a lot!

thonas-diagnostics-20220824-1427.zip

[JorgeB]

Mostly likely parity has the partition starting on sector 2048, please post output of:

 

fdisk -l /dev/sdb

 

[Aldamir]

It seems like you are right:

 

Disk /dev/sdb: 5.46 TiB, 6001175126016 bytes, 11721045168 sectors
Disk model: WDC WD60EFRX-68L
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: 0AEAFFC8-E5D1-443E-9BA9-D02A3F6D44EB

Device     Start         End     Sectors  Size Type
/dev/sdb1   2048 11721045134 11721043087  5.5T Linux filesystem

 

Do you know how to change that?

 

Thanks a lot!!

[JorgeB]

Starting some time ago Unraid uses sector 2048 for flash devices, and from that time if a device, disk or SSD, has a partition starting on sector 2048 it will use, it should create a new one for disks, solution it to wipe the disk/delete the partition and re-sync parity, once it's done you can add the new data disk.

[Aldamir]

The existing data drive also starts at 2048 - so i wipe the parity disk and then resync? 

 

[JorgeB]

1 minute ago, Aldamir said:

The existing data drive also starts at 2048

That's fine, no need to change that one, problem is only with parity.

[Aldamir]

How do i wipe the parity in a way i starts with the first sector? 

Thanks a lot!

[JorgeB]

Easiest way is to remove the partition with the UD plugin, click on the red x, disk must be unassigned and array started without it first.

[Aldamir]

Thanks for the help! Let's see if this was the solution