[Samba] Samba on ZFS

[Rowland Penny]

On Wed, 2022-01-12 at 07:44 -0600, Patrick Goetz via samba wrote:
> I'm about to deploy a Samba fileserver where the underlying
> filesystem 
> on the data partition is ZFS, and someone on the zfsonlinux list got
> me 
> worried that there might be some problems with doing this (e.g. 
> particularly when it comes to extended POSIX ACLs, which I use
> heavily).
> 
> This lead me to this page:
> https://www.samba.org/samba/docs/current/man-html/vfs_zfsacl.8.html
> 
> where I saw this:  "This module follows the posix-acl behaviour and 
> hence allows permission stealing via chown."
> 
> I have no idea what permission stealing is, and when I tried to
> google 
> it, I just got references to this man page.
> 
> Also, this "This module makes use of the smb.conf parameter acl map
> full 
> control = acl map full control. When set to yes ..."
> 
> acl map full control = acl map full control ?
> 
> Is that a typo?  I would expect to see, for example
> acl map full control = yes
> 
> or something like this.
> 
> Finally, am I going to run into extended ACL issues by Samba sharing
> ZFS 
> datasets?

Unless you are running Freebsd you can ignore the vfs_zfsacl module,
ZFS != zfsonlinux (aka ZOL). As far as I am aware ZOL uses ACL's in the
same way as ext4.

Rowland