On 2020-08-06 19:20, Aaron Bauman wrote: > Wait, changes were made to genkernel to switch from mdev to (e)udev > which causes breakage, but it is *not* an issue with genkernel?
Exactly. This failure can happen with genkernel version created 15 years ago, with new genkernel-4.1 which switched device manager or even with dracut -- the mistake is using non-permanent device names for things like root. I assume that most user don't do that. At least their default boot entry in /boot/extlinux/extlinux.cfg or via /etc/default/grub will have a permanent name -- but the problem are tools/scripts appending to that existing command-line. They will overwrite a good value... And it's even more a problem because even when you notice "Ah, something is appending root argument" you won't question that because the value you notice matches your expectation from POV of current running system. So you have to realize that this is a non-permanent value which could be different on next boot because you did X which caused and offset in numbering for example... > Aside from this, do we have any evidence or bugs validating that users > experience breakage with randomly named boot devices in kexec? > > It is great that you found an issue, but why try and be agnostic as to > which one caused the issue? It looks worse that we cannot simply say: > > "genkernel changed for the better and things *may* break now... please > read this!" > > Instead, we are pushing a news item to a lot of people simply because we > *assume* it may be an issue for others with no evidence. Well, the purpose of this is to educate and avoid problems for headless/server users. But if so many devs seem to care about pushing maybe unrelated information and believe that avoiding that has much more value than avoid a problem like an unbootable system for just a few people (and for headless/servers this is a major problem in case you cannot trigger remote reboot)... ¯\_(ツ)_/¯ -- Regards, Thomas Deutschmann / Gentoo Linux Developer C4DD 695F A713 8F24 2AA1 5638 5849 7EE5 1D5D 74A5
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