[CentOS] CentOS 7 kernel console under KVM?

Wed Oct 8 20:10:19 UTC 2014
m.roth at 5-cent.us <m.roth at 5-cent.us>

Chris Adams wrote:
> Once upon a time, Chris Adams <linux at cmadams.net> said:
>> Is there a way to get GRUB2 and the kernel to run a "serial" console
>> under KVM?
>
> So, I guess the people who replied didn't read - I tried ttyS0, and that
> didn't work.
>
> I did figure out why that doesn't work: when setting up a new VM with
> libvirt in F20, if you choose RHEL7 as the guest OS, it gets set up
> differently than RHEL6.  One difference is that it sets up a virtio
> console, instead of a serial console.
>
> First, it doesn't look like GRUB2 can talk to a virtio console.
>
> Second, I guess I'm hitting a kernel bug, because the kernel should be
> able to talk to a virtio console (i.e. hvc0).  It certainly shouldn't
> crash because I tried to use that.  The device works after boot (I can
> run a getty on it), it seems only the kernel can't talk to it directly
> as a console.

Any idea if pts's are set up? Also, is this of any help
<http://wiki.libvirt.org/page/Unable_to_connect_to_console_of_a_running_domain>?

      mark