Preventing respawns for non-operational terminals
An inittab entry, Upstart job file, or systemd service unit for user logins on an unavailable or non-operational terminal can cause recurring respawns of the getty program on z/VM® guests and on Linux® in LPAR mode.
Failing respawns increase system and logging activities.
The availability of some terminals depends on the environment where the Linux instance runs, LPAR or z/VM, and on terminal-related kernel parameters. For more
information, see the explanations for the conmode= and hvc_iucv=
kernel parameters.
You can use the ttyrun program to prevent respawns if a terminal is not available or not operational. With suitable inittab entries, Upstart job files, or systemd ttyrun service units in place, you can freely change conditions that affect the presence of terminals.