What's New in Proxmox VE 9.1

Proxmox VE 9.1 has landed, bringing with it a slew of system refinements and updates to core technologies. Based on Debian 13.2 ("Trixie") and utilizing Linux kernel 6.17.2 as the default, this release focuses on strengthening virtualization security, improving LXC workflows, and giving administrators more granular control over their homelab or enterprise environments. Let's dive into the major features!

One of the most requested features has finally arrived. Proxmox VE 9.1 adds the ability to create Linux Containers (LXC) directly from OCI (Open Container Initiative) images. This drastically simplifies the workflow for administrators who want to deploy standard Docker/OCI images without spinning up a full VM to run a Docker daemon.

A new vCPU flag has been introduced to provide fine-grained control over nested virtualization capabilities. Instead of a global toggle, you can now specify exactly which nested virtualization features are exposed to the guest OS, improving both performance and security boundaries.

Security takes a front seat with newly added support for Intel TDX (Trust Domain Extensions), offering hardware-isolated virtual machines. Additionally, TPM state can now be stored directly in `qcow2` format, streamlining backups and live migrations for VMs relying on Virtual TPMs.

Under the hood, Proxmox VE 9.1 updates all major virtualization and storage technologies to their latest stable iterations, ensuring you get the best performance out of your hardware.

Proxmox VE 9.1 is a rock-solid point release that delivers exactly what homelabbers and enterprise sysadmins need: better security, streamlined workflows, and updated core components. If you are running Docker in VMs, the new LXC OCI support alone might be worth the upgrade!