Blog

SAMBA+ 4.22 packages for various SUSE and Red Hat platforms as well as for Debian GNU/Linux and Ubuntu have been developed by SerNet’s Samba team and are now available.

This is the first stable SAMBA+ release of the new Samba 4.22 series. Please test thoroughly before upgrading and read the release notes carefully. They contain important information about changes and new features in this major release:

Samba 4.22 Release Notes

With this release, Samba 4.21 has entered "maintenance mode," while Samba 4.20 is now in "security fixes only mode." Samba 4.19 will likely not receive further updates, and the SAMBA+ 4.19 repositories will soon be disabled. Please upgrade to a recent SAMBA+ version.

New in Samba 4.22: SMB3 Directory Leases

A major enhancement in Samba 4.22 is the introduction of SMB3 Directory Leases. This is a milestone developed as part of the larger project funded by the Sovereign Tech Fund (STF). SerNet GmbH secured the funding and is managing the development.

SMB3 Directory Leases allow clients to cache directory listings, reducing network overhead and improving performance when working with shared files and folders. The new global smb.conf option "smb3 directory leases" controls this feature. It is enabled by default for non-clustered Samba installations and disabled for clustered environments. More details are available in man smb.conf.

Ralph Böhme will present "The Rocky Road to SMB3 Directory Leases" at sambaXP on April 7-8, 2025, in Göttingen, Germany.

For more information on the STF project and its contributions to Samba, visit: STF Project Overview

Upgrading

Details on package access and upgrading can be found in the SAMBA+ How-to collection: SAMBA+ How-to Guide

If you are upgrading from a SAMBA+ version older than 4.21 and use your own or third-party scripts that rely on Samba’s Python modules, you must install the sernet-samba-python3 package after upgrading to SAMBA+ 4.22 on Debian or Ubuntu systems. RHEL and SUSE-based systems are not affected.

For details on SAMBA+ pricing:

• US SAMBA+ Shop
• World SAMBA+ Shop

For further questions, contact the SAMBA+ Team.

It’s official: The detailed program for this year’s sambaXP on April 7–8, 2025 is now available! Visit sambaxp.org for all details. Look forward to a packed two-day schedule full of expert sessions, technical deep dives, and invaluable networking opportunities – once again held on-site at the Hotel Freizeit In in Goettingen, Germany.

Highlights at a Glance

• Keynote by Mirko Swillus (Sovereign Tech Agency): Get inspired right from the start as we kick off with exciting insights into the open-source and tech funding landscape.
• SMB3 POSIX Extensions in Samba (current status) – Volker Lendecke
• Azure Entra ID Auth in Samba: Introducing the Himmelblaud Daemon – David Mulder
• localkdc – A general local authentication hub – Andreas Schneider, Alexander Bokovoy
• SMB in Windows Server 2025 and Beyond – Raymond Wang, Genghis Karimov, Dan Cuomo
• The Rocky Road to SMB3 Directory Leases – Ralph Böhme
• Unleashing authentication for the Linux CIFS client with gssproxy – Daniel Kobras, Michael Weiser
• New keytab generation – Pavel Filipenský
• SID-Filtering, Claims Transformation and Selective-Authentication – Stefan Metzmacher
• A Deep Dive Into OAuth 2.0 – William Brown & David Mulder
• The CTDB Report 2025 – Martin Schwenke
• Accessing remote storage better from Linux – Steve French

Looking Beyond: SMB3 IO Lab

Immediately following sambaXP, from April 8–10, SNIA will host the SMB3 Interoperability Lab EMEA, an exclusive testing and collaboration opportunity that perfectly complements the conference program. Don’t miss the chance to link theory to practice and enhance your SMB3 implementations on the spot. (Additional registration needed:https://www.snia.org/smb3iolabemea)

Register Now!

Ready to dive in? Visit sambaxp.org to view the full agenda, secure your ticket, and find more details on both sambaXP and the SMB3 IO Lab. We look forward to welcoming you in Goettingen for an event packed with open-source tech, cutting-edge developments, and a vibrant community spirit!

On April 7-8, 2025, the sambaXP conference – the annual international event for the Open-Source software Samba – will take place in Goettingen, Germany. This year, participants have an exciting opportunity: Immediately following the conference, from April 8-10, SNIA will host the SMB3 Interoperability LabEMEA (IO Lab). The event is supported by Microsoft.

The IO Lab is organized as a unique testing event. It focuses on creating a collaborative space to test implementations, identify bugs and fix processes. Several new features have recently been added to the SMB3 protocol and are now subject for learning and implementing! Participants will also get an exclusive chance to directly interact with Windows Protocol Support, Test Suite Development, and members of the Windows development team. But the Lab is more than only a testing environment – it invites Samba developers to showcase their SMB3 solutions and exchange experiences and knowledge. 

Make sure to separately register for the Interoperability Lab via SNIA. Don’t miss the opportunity to test your SMB3 implementations on the spot in a cooperative environment. 

As for sambaXP tickets: please check the registration section at the conference website. 

SerNet and the Samba team are eager to meet everyone for the two exciting events in Göttingen!