Console features

Red Hat Enterprise Linux 8.6 LPAR mode z/VM guest KVM guest

The console device drivers support several types of terminal devices.

HMC applets
You can use two applets.
Operating System Messages
This applet provides a line-mode terminal for Linux® in LPAR mode. See Figure 1 for an example.
Integrated ASCII Console
This applet provides a full-screen mode terminal for Linux in LPAR mode and for Linux on z/VM®.
These HMC applets are accessed through the service-call logical processor (SCLP) console interface.
3270 terminal
This terminal can be based on physical 3270 terminal hardware or a 3270 terminal emulation.

z/VM can use the 3270 terminal as a 3270 device or perform a protocol translation and use it as a 3215 device. As a 3215 device it is a line-mode terminal for the United States code page (037).

virsh command on the KVM host
For Linux on KVM, you can access the console through a virsh command on the KVM host. See Using virsh on a KVM host.

The console device drivers support these terminals as output devices for Linux kernel messages.

Figure 1. Linux kernel messages on the HMC Operating System Messages applet
Screen capture of the HMC Operating System Messages applet.