G'day, In Fedora we use the `machine-id` in a few places in `/boot`. For example it is part of the rescue kernel name and the BLS files. This is (from what I understand) because we want to let our `/boot` (XBOOTLDR) partition be used by multiple installations if required.
Please correct me if I misunderstand the reasoning on functionality or purpose :) Sadly having the machine-id used as the differentiator is difficult for those of us who like to build images of operating systems. Since machine-ids are supposed to be unique per machine we can't pre-fill them. We can build the system, including running dracut, and reset the machine-id to something useful (such as `uninitialized`). However that makes us end up with (for example) a rescue kernel with the wrong machine-id. This leads to duplicate rescue kernels the next time dracut regenerates. For many of our disk images produced in `koji` we turn off rescue kernel generation because of this as it is a noticeable effect. However BLS files are also stored in this way. With the backstory out of the way. I've been looking into using `entry-token=os-id` instead of `entry-token=machine-id`. In this case we would instead use `fedora` as the differentiator for BLS and rescue kernels. There's probably history on why Fedora uses `machine-id`, there's probably things that preclude us from using `entry-token=os-id`. If you know any history about or you know something that would break if we were to switch to using the `os-id` please let me know. I might consider turning this into a change proposal for a next version of Fedora if there are no big downsides to changing this. Simon -- _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
