Console features

Red Hat Enterprise Linux 9.2 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.

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