AWS EFS from Windows Server 2012 [closed]

Question

Has anyone ever got Windows Server to connect to an AWS EFS volume using the Windows NFS 4.1 client? I am aware it is unsupported but wondering if anyone had done it (or via another client or utility?)

We have a requirement for a Windows Server to drop files onto an NFS volume (ideally EFS) where a folder on that volume can be polled from a RHEL based application. That app doesnt support S3 else we'd use that

Tks

Answer 1

Starting from the NFSv4.1 client made by folks at CITI @ University of Michigan, with a few relatively minor changes, you can get a working connection to an AWS EFS filesystem.

As @kafka points out: AWS EFS disallows / fails when any client specifies a share deny value other than OPEN4_SHARE_DENY_NONE. Luckily the CITI folks discovered this as a possible problem and added a definition that, when commented out, will only ever use OPEN4_SHARE_DENY_NONE for the share deny value.

Once this definition is commented out, then you need to recompile it for your system – relatively trivial if you use the versions of Visual Studio and WDK that the readme specifies. One gotcha was that the self-signed certificate process needs to not use the outdated Root Agency certificate (since it's only 512-bit). Use certreq instead.

I'm working on collecting this knowledge into a fork of the CITI code at Github. (I'm sure you either solved your problem or moved on, but good luck to those folks who landed here from Google!)