Local SSD (gcloud alpha feature)

Hello there,

I am having trouble understanding how I can add and format local SSD volumes in GCP GKE node pools.

I have read the documentation and I can add scratch disks (NVME|SCSI) but I can’t see any options for formatting these disks.

I note that gcloud alpha has these features (see https://cloud.google.com/sdk/gcloud/reference/alpha/container/node-pools/create#--local-ssd-volumes) and there is an enable-kubernetes-alpha flag, but no further documentation.

Do I simply need to use gcloud alpha instead to achieve this?

Any pointers appreciated!