CVMFS: Benchmarking of new FUSE features

The project focuses on integration of FUSE-T kextless module for CVMFS on macOS. This initiative is motivated by the computational demands of particle physics, especially those associated with the Large Hadron Collider, which necessitates efficient and reliable software deployment across a massive, globally distributed computing grid. CVMFS (CernVM File System) plays a pivotal role in this process, serving as an optimized, POSIX-compliant read-only file system designed for user space via FUSE modules, thus facilitating software distribution. I propose replacing the current MacFUSE module as kernel extensions facing deprecation by Apple, with FUSE-T, a user-space module claimed to be a drop-in replacement. This transition addresses the issues with kernel extensions (kexts) and aligns with Apple's shift towards prohibition of support for them. Such approach potentially seems to be the most user-friendly in terms of security. The project involves various stages, including adapting CVMFS to use FUSE-T, benchmarking file operations, and investigating libfuse's new features like FUSE_CAP_SPLICE_MOVE. Deliverables include the successful integration of FUSE-T into CVMFS, benchmark reports on file operations, and an evaluation of libfuse updates.