Unable to create hard disk on Windows 2012r2 NFS

[seangarland]

We have 3 VMWare hosts, with shared and direct attached storage.  We have been moving things around, and temporarily moved some VM's to a Windows 2012r2 Storage server.  We setup the storage as NFS 4.1 in VMWare, and setup following the many guides on the internet on the 2012r2 server.

I'm not sure what happened, but we can no longer extend or create storage.  I have tried many many things on both the VMware side and the server 2012r2 server, but am at a loss.  None of the 3 hosts can create disks on the 2012 datastore.  I can create disks on my OpenSuse NFS storage, as well as the local direct attached storage.  All 3 vmware hosts are acting the same. 

The error message I get when trying to create a disk:

A general system error occurred: Error creating disk Device or resource busy

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of Lookup[file] failed

File system specific implementation of Lookup[file] failed

File system specific implementation of Lookup[file] failed

File system specific implementation of Lookup[file] failed

File system specific implementation of Lookup[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of Lookup[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of Unlink[file] failed

File system specific implementation of Lookup[file] failed

File system specific implementation of LookupAndOpen[file] failed

File system specific implementation of Ioctl[file] failed

File system specific implementation of RenameFile[file] failed

I can browse the data store, and I can create folders, edit files, etc..  I can mount existing disks and the vm works.  I just can't create new, or extend the size of existing. 

Any ideas? 

Thanks!

[daphnissov]

I have never used Storage Server before, but whatever NFS server this is providing, is it *actually* adhering to NFS 4.1 standards? NFS 3 and 4.1 are not interchangeable and must be very specifically configured from the storage side to work properly. Also, I'm pretty sure this is not officially supported, so I hope this is only a temporary solution and one which is not in production.