Posts

All the articles I've posted.

• How qcow2 Overlays Work in QEMU

  6 Jun, 2026

  Learn how qcow2 backing files work in QEMU, why they are different from Linux overlayfs, and how they make VM sandbox cloning fast and cheap.

• Open Source Windows Sandbox in Python: Run Windows 11 on Linux with SmolVM

  26 May, 2026

  SmolVM now supports Windows 11 sandboxes. Boot disposable Windows VMs from Python, run PowerShell, upload files, pass environment variables, and tear the VM down after the task.

• How to Safely Run AI-Generated Code with SmolVM (Open-Source MicroVM Sandbox)

  21 Apr, 2026

  SmolVM is an open-source microVM runtime that lets AI agents run untrusted code in a hardware-isolated sandbox. Learn why Docker isn't enough for LLM-generated code and how to spin up a Firecracker-powered sandbox in three lines of Python.

• VMs vs microVMs vs Docker for AI Agents

  10 Apr, 2026

  Not all isolation is equal. Here's how to pick the right one for your AI agents.