Migration

After replacing Proxmox and TrueNAS with NixOS, my GPU machine was the last one still on btrfs, picked years ago because forum threads had me convinced that ZFS and NixOS were a bad combination. What finally pushed me to fix it: I run AI agents in YOLO mode all day, the stories about frontier models wiping home directories kept coming, and my restic backups needed an hour and a half just to scan a hundred million files. The audit’s first finding: the backups had been silently dead for four months. This is the story of auditing my backups, verifying the restore path end-to-end, and wiping my daily driver so that nine machines share the exact same ZFS setup.

TrueNAS was the last appliance OS in my homelab. The build-system change was the last straw, but the itch had been building for a while: too much UI state, unclear defaults, and virtualization churn around Incus. This is the story of how I gave an AI agent root-capable SSH access with strict instructions not to change anything, used it to inspect the live machine, recreated the config declaratively, and built a VM rehearsal to prove disko would only wipe the boot disk.

After years of running a Proxmox cluster, I migrated my entire homelab to NixOS with Incus. I explain the philosophical friction of imperative ‘appliance’ OSs vs declarative hosts, share how I migrated my LXC/VM workloads, and why it is the perfect infrastructure to manage using AI agents.