2 Gluster fileservers...serverA & serverB - xfs formatted bricks
One samba server...serverC (mounting the gluster using fuse/tcp from serverA)

Samba share definitions from serverC's smb.conf:

[TestShare]
        writable = yes
        path=/local-xfs-fs/TestShare
        vfs objects = acl_xattr
        acl_xattr: ignore system acls = yes
        create mask = 777
        directory mask = 777

[TestShare2]
        writable = yes
        path=/gluster-fs/TestShare2
        vfs objects = acl_xattr
        acl_xattr: ignore system acls = yes
        create mask = 777
        directory mask = 777

Can create a file on both shares no problem.  When trying to set permissions from windows 7 client, I can set permissions on file in TestShare, but not in TestShare2.