[Samba] deny new connections

Thomas Schulz schulz at adi.com
Fri Mar 7 19:08:05 MST 2014

> Hi people,
> I was wondering: is it possible to deny all new connections to samba,
> but keep the current connections working ?
> We have some applications running from a samba share. To update the
> application everybody needs to close it.
> Since we have almost 1000 concurrent users, 24/7, it is difficult to
> keep them out.
> My solution now is:
> -          Communicating the downtime and provide a time window in
>            which users cannot access the application
> -          In that time window: checking smbstatus for who is still
>            logged in, phone them, and ask to quit the app
> -          Change smb.conf to only allow my IP address, restart smb
> -          Update
> -          Restore original config and restart
> Big culprit in this method is that sometimes users start the
> application while I stop or restart samba.
> This often causes data-file corruption; the apps are very sensitive to
> that .
> It would be very handy to deny new connections, but keep current
> connections (new file locks included) working.

When you edit the smb.conf file the running smbd program is supposed to
notice that within a minute and adopt the changes. Perhaps your method
of editing the smb.conf file would work if you did not stop and restart

Tom Schulz
Applied Dynamics Intl.
schulz at adi.com

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