[Samba] Slow login after samba upgrade

[Michael Tokarev]

01.01.2023 16:01, Max Serafini via samba wrpte:
..

How about looking at the samba logs?  There should be something in
there with the issues you observe. Maybe at log level 1 or 2, but
I guess the default should already reveal something.

It looks like there's a single problem which you're hitting from
different angles.

(you can remove (or move) all /var/log/samba/log.* stuff and restart
samba to see fresh logs only).

Thanks,  and Happy New Year!

/mjt

> Ramifications.
> 1. Login is now extremely slow particularly on a terminal server running
> Windows 2012 R2.  Before the upgrade login was instant.  Now it takes 2+
> minutes.
> 
> 2. On the 2012 server we installed AD management tools.  Using AD Users and
> Computers, change domain controller function, the window is not responding
> for about 2+ minutes, then the error:
> 'The list of Domain Controllers for domain ... is unavailable because: The
> RPC server is unavailable.'
> Attempting the switch straight after the list populates the DC sometimes
> changes quickly and some other times it shows:
> 'Unable to connect to the Domain Controller because: The remote procedure
> call failed and did not execute.'
> Eventually it works.
> 
> 3. netlogon sysvol share browsing.  In file explorer entering either
> server's path, \\dc2 or \\dc3 it sits for 2+ minutes and then it says:
> '\\dc3 is not accessible.  You might not have permission to use this
> network resource.  Contact the administrator of this server to find out if
> you have access permissions.  The remote procedure call failed.'
> Re-entering the path, \\dc3 and the shares load just fine.
> 
> If you could please advise.  Thank you.