https://github.com/laris/orbstack-nixos-openzfs

This repository is the cleaned publishable version of a local investigation into making OrbStack + NixOS unstable + LUKS + ZFS work on OrbStack's shared Linux kernel.

Here is the guide for your reference to migrate to other linux VM.
https://github.com/laris/orbstack-nixos-openzfs/blob/main/docs/07-source-notes-and-reproduction.md