Speeding up Kernel Testing and Debugging with virt-meng
summary
A forked and maintained virtme-ng boots a recompiled kernel inside a copy‑on‑write live snapshot using verfs instead of 9p, and mounts the whole root with overlayfs so installs and package tests are writable and ephemeral. The init moved from bash to Rust and uses a microVM qemu path to cut boot latency; a git diff that took five minutes on 9p runs in 1.7 seconds, typical interactive shells appear in ~1.2 s (0.8–0.9 s on beefy machines), and USB passthrough, GDB and CI-friendly batch runs work.
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chapters (7)
- 0:00Introduction to kernel testing
- 4:39Discovering virt-me tool
- 7:50Forking virt-me project
- 12:09Improvements with verfs and overlay FS
- 19:43Demo and use cases
- 22:11Conclusion and future plans
- 29:56Q&A session
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