[systemd-devel] [PATCH] correctly mark system reboot

[Andrey Borzenkov]

On Thu, Mar 3, 2011 at 12:31 AM, Lennart Poettering
<lennart at poettering.net> wrote:
> On Wed, 02.03.11 11:41, Andrey Borzenkov (arvidjaar at gmail.com) wrote:
>
>> It is expected that system will put "reboot" in wtmp to mark
>> when it starts coming up. This is looked for by "who -b" and is
>> used by "last" to calculate correct time spent by various programs.
>> Add systemd-update-utmp-reboot.service which is started as soon
>> as possible after local-fs.target to mark reboot.
>
> Hmm, systemd-update-utmp-runlevel.service should normally do that
> implicitly. When /lib/systemd/systemd-update-utmp is called with the
> "runlevel" argument then it will add the "reboot" entry if necessary
> automatically, followed by the "runlevel" entry.
>
> Are you suggesting that this automatic logic isn't working correctly?
>

On my notebook "reboot" line is never added. What is funny, it appears
that on my test VM which has stripped down installation "reboot" does
actually appear. Which suggests some race condition or uninitialized
variable somewhere.

Any suggestions how to debug it further?