[Bug 1862300] Re: "systemctl kexec" reboots

[Dimitri John Ledkov]

Yes, kexec-tools should ship finalrd hook to fix this.

** Changed in: finalrd (Ubuntu)
       Status: New => Won't Fix

** Changed in: kexec-tools (Ubuntu)
       Status: New => Triaged

** Changed in: kexec-tools (Ubuntu)
   Importance: Undecided => High

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Title:
  "systemctl kexec" reboots

Status in finalrd package in Ubuntu:
  Won't Fix
Status in kexec-tools package in Ubuntu:
  Triaged

Bug description:
  After the introduction of finalrd, "systemctl kexec" (with a kernel
  preloaded by "kexec -l ...") no longer kexec()s -- it reboots instead.

  Can be reproduced for example using a livecd (say, xubuntu-18.04
  -desktop-amd64.iso):

  sudo -i
  apt-get update
  apt-get install kexec-tools finalrd
  systemctl start finalrd  # optional
  kexec -l /cdrom/casper/vmlinuz
  systemctl kexec

  Expected results: the system kexec's into the kernel and panics (due
  to lack of /init, since we haven't given it an initrd).

  Actual results: the system reboots (e.g. the livecd's bootloader menu
  runs).

  
  If we don't install "finalrd" above, kexec works normally.

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