Any pointer or protips on education / where to start to diagnose extended acl issues?

[Jeremy Allison]

On Thu, Feb 03, 2011 at 07:46:32PM +0000, Hammitt, Charles Allen wrote:
> Hi Jeremy,
> 
> 
> V4 ACLs are enabled on the Clustered Parallel Filesystem (IBM GPFS 3.2) on which samba serves out; http://ctdb.samba.org/ 

Yes, NFSv4 ACLs might be enabled on the filesystem, but you haven't
told Samba that they are there. Samba doesn't know by magic. By
default it'll assume POSIX ACLs.

You need to add a VFS module load to tell Samba you have NFSv4 ACLs
on GPFS - which according to your smb.conf you haven't done.

Jeremy