[Samba] ACL Anomaly with vfs_acl_xattr on ocfs2 volumes running on ubuntu 18.04

[Jeremy Allison]

On Thu, Jun 14, 2018 at 04:28:51PM +0200, Felix Stolte via samba wrote:
> Hello everyone,
> 
> we are running a CTDB cluster and share folders on ocfs2 volumes via samba
> using the vfs acl_xattr to store acls in extended attributes. It works fine
> with Ubuntu 16.04 LTS. I'm currently testing 18.04 and have a weird (but
> reproducable) ACL behaviour: I grant two users a and user b full access on a
> folder from a windows client. (Share permissions are fullcontrol for
> everyone). If the folder is owned by user A, user B can change into it, but
> is not allowed to create files or folders. He is however allowed to delete
> files and folders.
> 
> This is only on ocfs2 formated volumes, on ext4 or cephfs ACLs work as
> expected. Anybody ran into the same issue and has a solution for this?

Hi Felix, not many people have experience with
Sama on ocfs2.

I suggest getting debug level 10 logs between 16.04
where it works and 18.04 where it fails and look for
the difference.