behaviour of "systemctl kexec" not matching man page, sabotaging kexec reboots with kexec-tools

[Timo Weingärtner]

Hallo Michael,

21.02.20 12:07 Michael Biebl:
> [dropping debian-devel]
[re-adding kexec-tools maintainer and therefore not deleting context]

(I understand that you don't want to have yet another discussion about systemd 
breaking things too publicly.)
 
> Am 20.02.20 um 18:30 schrieb Timo Weingärtner:
> > IMO there are some options to proceed:
> > 1) improve the heuristic in systemctl so that it succeeds if kexec-tools
> >    is installed, maybe with some option in system.conf.
> > 2) work around the systemd bug in kexec-tools by loading the kernel at
> >    boot and kernel install times¹, wasting about 40 MiB of RAM.
> > 3) provide a wrapper script (say "kexecreboot") in kexec-tools that runs
> >    the long version above and also loads a kernel in the case of sysvinit
> >    with kexec-tools/load_kexec=false.
> > 4) provide a wrapper script and dpkg-divert systemctl.
> 
> I think https://github.com/systemd/systemd/issues/7730 should be helpful
> to understand what's going on.

I read that before already.

> "systemctl kexec" as it is today requires EFI boot and the kernels being
> installed following the boot loader spec [1], which is not the case for
> Debian. The error messages you are seeing are a result of that.

OK. What is your proposal for fixing the problem now?

> Regards,
> Michael
> 
> [1] https://systemd.io/BOOT_LOADER_SPECIFICATION/


Mit freundlichen Grüßen,
Timo Weingärtner
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