[Samba] id mapping

[Rowland Penny]

On Mon, 2021-09-20 at 16:51 +0200, Ralph Boehme via samba wrote:
> Am 20.09.21 um 16:42 schrieb Patrick Goetz via samba:
> > Now it looks like I'm going to have to rethink the entire system 
> > architecture if I want to upgrade the file server from Ubuntu 18.04
> > to 
> > anything newer?  (Ubuntu 20.04 ships 4.11.6).  This is going to be
> > a 
> > problem, as all the files are related to the UIDs and GIDs
> > generated by 
> > sssd. I'm not sure that's realistic in a very active research 
> > environment. The solution is likely going to involve virtualizing
> > all 
> > the Windows machines and using IOMMU to provide a PCIe passthrough
> > for 
> > whatever GPU's they need for processing.
> 
> sorry, tl;dr, at least not fully, but still wanted to mention...
> 
> > Any thoughts on this appreciated.
> 
> ...you could try to use the idmap sss backend. Unfortunately it's
> not 
> included in upstream Samba and therefor not available on Ubuntu. 

It was removed from Samba after a team discussion, based on the fact
that it was designed for an external product, so shouldn't be in the
Samba tree (If I remember correctly).
> Otho 
> RHEL Samba ships it, if that helps.

It may, if the OP only requires authentication, in which case you might
as well just run sssd by itself without Samba.

Rowland