Home | SBAdmin Support | Knowledge Base | Why does my Linux LPAR appear to hang when booting from boot media?

SBAdmin Support

Need Help? We got you covered.

Why does my Linux LPAR appear to hang when booting from boot media?

Why does my Linux LPAR appear to hang when booting from boot media?
I created boot media on my PowerLinux system, but it does not boot. It stops while executing the kernel with the following messages:

CKRM Initialization
...... Initializing ClassType ........
...... Initializing ClassType ........
CKRM Initialization done
time_init: decrementer frequency = 206.999000 MHz
time_init: processor frequency = 1654.344000 MHz
kdb_cmd[0]: defcmd archkdb "" "First line arch debugging"
kdb_cmd[6]: defcmd archkdbcpu "" "archkdb with only tasks on cpus"
kdb_cmd[12]: defcmd archkdbshort "" "archkdb with less detailed backtrace"


ANSWER

This is caused by passing the incorrect console device to the kernel.

Storix by default will use "tty0" as the console device. However, a Linux LPAR system uses console device "hvc0" because there is no "tty0" device. This is why the kernel appears to hang once it passes output to the console device.

To resolve this, you should specify "hvc0" as the console device when creating your boot media or enabling the client for network boot.

If you have already created boot media, you may change the console device by pressing the tab key when you see the "yaboot" prompt and append the line "console=hvc0"