~/talk

Image Mode Support in Testing Farm

Talkat DevConf.CZ 2025 · 2025-06-12..06-14· [web-platform, testing]
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Image mode testing for RHEL/Fedora/CentOS Stream runs in Testing Farm using tmt and bootable container files that are converted to AMIs; to avoid a 20+ minute per-run bottleneck images are prebuilt AMIs cached in AWS and daily rebuilt, stored in a container registry, and requested via the Testing Farm API. tmt performs on-host image rebuilds and reboot cycles so tmt bootswitch rebuilds container images and reboots to reach the desired state. Users can reserve image-mode VM in ~5 minutes and re-run existing tests; first-boot fidelity uses bootsy conversion (nested-virt path exists but is less scalable).

AI-written summary · about

  1. 0:00Testing Farm and Image Mode
  2. 6:31Package Mode pipeline
  3. 9:02Image Mode challenges
  4. 11:31Image Mode workflows
  5. 16:08First boot in Image Mode
  6. 21:06Image Mode in Fedora/CentOS CI
  7. 23:55Reserving Image Mode systems
  8. 26:50Q&A on Image Mode
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