smb[3]status

Version 3 added a whole set of new features to the SMB protocol, notably all-active clustering capabilities. The two most prominent consequences are that it is now possible to run Hyper-V instances off an SMB share and that SMB supports RDMA as a transport in the guise of the so called SMB Direct.

Samba supports basic SMB3 since version 4.0, but without these more advanced features. Designs and plans have been developed for implementing SMB Direct and all that is needed for Hyper-V-support, and meanwhile, development has really begun.

This talk describes the advanced SMB3-features from the perspective of a Samba developer. The new concepts create quite a few challenges for Samba. Especially interesting is the result of our research regarding the relation of the SMB3 clustering concepts with the existing CTDB-clustering of Samba. The talk then describes the status of development of the SMB3 features in Samba.

Learning Objectives

SMB3 features as seen from a Samba perspective
Challenges imposed by SMB3 for Samba's architecture
Status of SMB3 development in Samba