Bug 56842

Summary:	Rebooting using kexec does a normal reboot
Product:	systemd	Reporter:	Jan <medhefgo>
Component:	general	Assignee:	systemd-bugs
Status:	RESOLVED INVALID	QA Contact:	systemd-bugs
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Jan 2012-11-07 15:11:06 UTC

Rebooting using "systemctl kexec" does a normal reboot. The kernel+initramfs have been loaded with "kexec --load --reuse-cmdline --initrd=/boot/initramfs-linux.img /boot/vmlinuz-linux" on my Arch installation prior to issuing systemctl. When I manually "kexec -e" in emergency.target kexec works.

Comment 1 Kay Sievers 2012-11-07 15:21:12 UTC

What does:
  $ cat /sys/kernel/kexec_loaded
show, before kexec is called?

Comment 2 Jan 2012-11-07 16:32:58 UTC

$ cat /sys/kernel/kexec_loaded
0
$ kexec --load --reuse-cmdline --initrd=/boot/initramfs-linux.img /boot/vmlinuz-linux 
$ cat /sys/kernel/kexec_loaded
1
$ which kexec
/sbin/kexec

Comment 3 Jan 2012-11-08 10:50:03 UTC

I did some digging and found out that systemd's kexec implementation works. It just wasn't executed because of /run/initramfs/shutdown logic. Interestingly enough, it contains kexec logic but not the kexec executable itself. I'm reporting it at arch now.

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