Cache Rules Everything Around Me - November 22, 2024

In this episode of TrueNAS Tech Talk, Kris and Kris Moore discuss a recent security release for TrueNAS CORE, emphasizing the importance of updating to mitigate vulnerabilities, particularly for users of Jails and plugins, while noting that TrueNAS Scale is unaffected. They also announce the code freeze for the Electric Eel .1 release, slated for mid-December, highlighting the numerous issues addressed and the anticipation for its release. The discussion transitions to a deep dive into caching, covering L2ARC for read-heavy workloads and SLOG for synchronous writes, detailing the performance benefits and considerations for choosing appropriate hardware. They address the proper method for scripted shutdowns, advocating for the use of middleware calls to ensure clean system operations. Looking ahead, they preview upcoming features in the Fangtooth release, including kernel updates, OpenZFS 2.3, versioned APIs, and Incus-based LXC containers and VMs, along with enterprise-focused enhancements like NFS over RDMA and SMB block cloning for Veeam. Finally, they address a listener question about the experience of moving from BSD to Linux, promising a more detailed discussion in a future episode.