Why is the 'sss' backend verboten as a default IDMAP backend?

Fri Jul 14 21:57:57 UTC 2017

On Fri, Jul 14, 2017 at 02:53:21PM -0700, Richard Sharpe via samba-technical wrote:
> Hi folks,
> 
> Just testing 4.7rc3 and ran into this problem:
> 
> ERROR: Do not use the 'sss' backend as the default idmap backend!
> 
> Why is that?

git blame on testparm gives:

$ git show 3de634d7a04f
commit 3de634d7a04f9e1cb8fda9dfb50b3675ab88b4fc
Author: Andreas Schneider <asn at samba.org>
Date:   Wed Dec 7 17:44:25 2016 +0100

    s3-testparm: Print error if the default backend is incorrect

    Signed-off-by: Andreas Schneider <asn at samba.org>
    Reviewed-by: Michael Adam <obnox at samba.org>

That should help you look up the patch and discussion
on samba-technical archives.