In that post, you asked "Do you see any other providers here? https://github.com/GoogleCloudPlatform/kubernetes/tree/maste...

Your implication was, at the time, there was only a GCE Persistent Disk provider.

Today, there's that, plus AWS EBS volume, git repo, GlusterFS, NFS, Ceph block device, iSCSI, as well as host path and empty directory.

Sounds like the product has evolved with a broad spectrum of support to me!

Yes, it has! Again, I don't think the design decisions were made to lock out other vendors. It's very reasonable to me that the first platform to be supported by Google engineers is Google's platform.

Side note: I should be a better citizen and link to specific commits next time.