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3.5 How to change the input-output destination of OS console to tty-a
3.5
How
to
change
the
input-output
destination of OS console to tty-a
It describes how to change the input-output destination of the OS console to the tty-a.
"tty-a" should be used as console to access console via SCF-LAN or serial port(tty-a). In
addition to this, ipl-log and panic-log, which is collected by XSCF, is availabe only when output of
console is "tty-a".
To enable XSCF as the Standard console(OS console) device, you must do the following
operation from [1] to [3]:
Note:
When you use the graphic card, we strongly recommend that you should do as below.
[1] Changing the environment variable properties of NVRAM.
1. Change the "MAINTENANCE mode" on the MODE SWITCH of the server operation
panel.
2. Power on the server and enter the following commands at the ok prompt on the Console:
ok setenv input-device ttya
ok setenv output-device ttya
3. Enter the following command and check the information as below.
ok printenv
input-device ttya
output-device ttya
4. These properties take effect after the next server reset.
5. After completing the OBP setting, set the MODE switch back to the setting for normal
operation (LOCK).
Caution:
The break signal becomes an enable, when the MODE switch is "MAINTENANCE
mode". If you forget to return the MODE after the MODE switch is changed to
"MAINTENANCE mode", the break signal might be issued to the server and OS might be
downed. After completing the setting, please set the MODE switch back to the setting
for normal operation (LOCK).
[For your information]
When graphic card is installed, default values of "input-device" and "output-device" are as
follows:
input-device keyboard (Keyboard directly connected system)
output-device screen (Graphic board)
Therefore, if keyboard and graphic board are mounted on the server, they are used as the
standard console. If not mounted, the options are not valid and ttya is the standard console.
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