[Samba] SAMBA4 and unix extensions

[Jeremy Allison]

On Wed, Aug 13, 2014 at 10:18:16AM +0200, Luis Recuerda wrote:
> I am using a samba 4.1.9 as a file server for linux and windows clients.
> 
> I have discovered that I cannot use "unix extensions" with the linux
> clients, I get "operation not supported" errors. Using wireshark I can see
> that the server sends STATUS_INVALID_LEVEL response to "Query File Unix
> Basic" request.
> 
> I have found in this mailing list this message of Andrew Bartlett:
> 
> https://lists.samba.org/archive/samba-technical/2010-September/073492.html
> 
> Four years ago samba4 could not serve "unix extensions". Is this problem
> still present in current version?

Almost certainly you're using the wrong fileserver code.
Ensure you dont' have ntvfs loaded.

Might be time to remove that code now...