Challenges and solutions implementing an Open Source multiprotocol stack

Concurrent storage access via standard network protocols such as SMB and NFS has become a common feature of many proprietary storage products. Samba, the leading open‑source SMB implementation, has long supported a limited set of multiprotocol scenarios by leveraging kernel interfaces and by allowing aspects of multiprotocol access to be implemented in the filesystem. Over time, several storage vendors have exploited these capabilities while using their own proprietary filesystems.

In this talk we will present our plan for a fully open‑source multiprotocol stack built on CephFS, Samba, and NFS‑Ganesha. First, we will describe the testing infrastructure we are creating and the use‑cases we intend to support in the initial release. We will then outline our approach to exclusive file locking and to a unified access‑control model.