remove and recreate a vSAN disk group issue

[szafa]

Hi All

Cache disk failed and was replaced with new one, web client still show that disk as absent. KB2150567(VMware Knowledge Base) recommend to remove old broke disk group but when I try to get UUID (esxcli vsan storage list) it is empty value. How I can remove that disk group and create new one?

Thanks

[Nawals]

Physically remove the device before you remove it from vSAN? If not follow the proper steps will give this problem.

Follow below articles for removing disk groups and recreate.

https://www.virtualizationhowto.com/2018/11/replacing-vmware-vsan-cache-disk-and-resyncing-vsan-obje...

VMware Knowledge Base

http://www.vmwarearena.com/remove-capacity-disk-from-vsan-disk-group/

http://www.vmwarearena.com/create-all-flash-vsan-disk-group/

[TheBobkin]

Hello szafa​,

As the cache-tier device was replaced, the original Disk-Group is gone - did you remove the vSAN partitions on the Capacity-tier devices from that Disk-Group?

Can you share the output of the following:

# vdq -Hi

and

# vdq -q

and

# esxcli vsan debug disk list

Nawals, none of what you said is going to help with OPs issue, please more carefully read what they said.

You also referenced a kb article that they already referenced and thus are clearly aware of.

Bob

[szafa]

Hi TheBobkin​, didn't touch yet any capacity disk on that problematic Disk-Group as I'm not sure how to recreate it after cache replacement.

Please check URL to see out put of requested commands =>  https://justpaste.it/5lqpx

Thanks for your help.

[TheBobkin]

Hello szafa​,

52a4a24c-6776-c97e-e15b-dc7ebf79c701 is the reference to the Cache-tier device that was removed.

Please validate that data in the cluster is healthy (Cluster > Monitor > vSAN > Health > Data).

If all is good on that front then proceed with removing the reference to the old Disk-Group - this *should* also remove all remaining partitions on the Capacity-tier devices:

# esxcli vsan storage remove -u 52a4a24c-6776-c97e-e15b-dc7ebf79c701 -m noAction

Then create the new Disk-Group via Cluster > Configure > vSAN > Disk Management .

Bob

[szafa]

Thanks TheBobkin​ for quick reply, will try it tomorrow