[systemd-devel] [PATCH resend] getty-generator: Enable getty on all active serial consoles.

[Michael Marineau]

On Sep 10, 2013 6:41 PM, "Jan Engelhardt" <jengelh at inai.de> wrote:
>
>
> On Tuesday 2013-09-10 17:41, Lennart Poettering wrote:
> >On Wed, 28.08.13 13:12, Michael Marineau (michael.marineau at coreos.com)
wrote:
> >
> >> This enables a getty on active kernel consoles even when they are not
> >> the last one specified on the kernel command line and mapped to
> >> /dev/console. Now the order "console=ttyS0 console=tty0" works in
> >> addition to "console=tty0 console=ttyS0".
> >
> >The kernel already makes a distinction between the
> >primary console, and all others (the latter only receive logs, but you
> >cannot read from them via /dev/console iirc), and so we propagated that
> >distinction into systemd, too.
> >
> >I can totally see that this is confusing though, as nobody remembers the
> >right ordering...
>
> Though console= just follows the standard principle of "later values
> override earlier ones", if nobody can remember the ordering, perhaps
> the kernel should be taught a suboption to explicitly specify the
> primary console. Think
>
>   console.primary=ttyS0 console=tty0
>   console=tty0 console.primary=ttyS0

That doesn't answer the question whether a getty should be started on
secondary consoles though. My surprise was that the generator doesn't
already do that, not how the primary console that gets mapped to
/dev/console is chosen.
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