[ovirt-users] Problem with Getty and Serial Consoles

[Francesco Romani]

----- Original Message -----
> From: "Christophe TREFOIS" <christophe.trefois at uni.lu>
> To: "users" <users at ovirt.org>
> Sent: Monday, June 13, 2016 5:05:28 PM
> Subject: [ovirt-users] Problem with Getty and Serial Consoles
> 
> Dear all,
> 
> I am running 3.6.6 and am able to select a Console, however, the screen is
> black.
> 
> On the hypervisor, I try to start getty service manually, and end up with
> following error in journal
> 
> Jun 13 17:01:01 elephant-server.lcsb.uni.lu systemd[1]: Stopping
> user-0.slice.
> -- Subject: Unit user-0.slice has begun shutting down
> -- Defined-By: systemd
> -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
> --
> -- Unit user-0.slice has begun shutting down.
> Jun 13 17:01:37 elephant-server.lcsb.uni.lu systemd[1]: Job
> dev-hvc0.device/start timed out.
> Jun 13 17:01:37 elephant-server.lcsb.uni.lu systemd[1]: Timed out waiting for
> device dev-hvc0.device.
> -- Subject: Unit dev-hvc0.device has failed
> -- Defined-By: systemd
> -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
> --
> -- Unit dev-hvc0.device has failed.
> --
> -- The result is timeout.
> Jun 13 17:01:37 elephant-server.lcsb.uni.lu systemd[1]: Dependency failed for
> Serial Getty on hvc0.
> -- Subject: Unit serial-getty at hvc0.service has failed
> -- Defined-By: systemd
> -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
> --
> -- Unit serial-getty at hvc0.service has failed.
> 
> I am running CentOS 7.2.
> 
> Does anybody have some pointers on what could be the issue here?

Hi!

Make sure you added the right parameter to the kernel command line, as per

"""
TL;DR: To make use of a serial console, just use console=ttyS0 on the kernel command line, and systemd will automatically start a getty on it for you.
"""

nice full tutorial on http://0pointer.de/blog/projects/serial-console.html

Bests,

-- 
Francesco Romani
RedHat Engineering Virtualization R & D
Phone: 8261328
IRC: fromani