Hi All, I'm emailing my questions on the topic here as it seems to be the best Fedora focused place to discuss Atomic Host and kernel interaction. If that isn't the case, please point me to where you believe that is. I have two basic questions around the interaction of Atomic Host and the kernel. The first is fairly straightforward: is there anything Atomic Host or the atomic toolset needs that the kernel does not provide today? Missing features, bugs that have been hit but not fixed, etc. I believe the answer is likely no, given that atomic is off and running fine and leverages hardlinks but I thought I would ask. The second question is a bit more involved. Atomic provides the nice ability for rollback across the entire OS tree. However, that requires an atomic image to be spun for every instance of that tree. That, naturally, means that whenever a new Atomic Host instance is spun it will use whatever kernel happens to be the latest in the Fedora release it is built from. This means that one cannot leverage the nice side effect of being able to update the kernel independently of userspace. (Which is also nice from a testing perspective when it comes to kernels and regressions.) To my understanding, the only way to provide such testing would be to create Atomic Host images that only deviate from the official images in that they provide a new kernel. Then one could use the standard atomic tools to do testing and rollback of _only_ the kernel if a problem is detected. While this is certainly possible, I'm not sure it is something the Cloud sig (or whomever) is really interested in doing. On the kernel side, we could provide such images built on our own but I'm not sure the effort or duplication of tooling/infrastructure is worthwhile overall. Particularly when non-atomic Rawhide continues to be flexible enough for these purposes. With a two week image release timeframe though, being able to use different kernels might be a good idea. Does anyone have any thoughts around this topic and how to possibly accomplish such testing? The only other idea I had was to spin the Atomic Host images containing the last 3 kernels in them, but I am not sure if choosing between them at boot is currently possible with multiple kernels installed. Thanks in advance. josh _______________________________________________ cloud mailing list cloud@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/cloud Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
