how to access the virtual serial port of an lpar runing over a vios   

Hello all,

For testing purpose, we have a p51A running a vios (iir 2.1 not yet fp 22 but the previous one) manage with an hmc.

This vios is the basis to run 3 other lpar on this system and for each of those lpar it was defined (also by default) 2 serial port (01). One of this lpar is a small testing linux installation for which I would like to have access to one of its serial port to collect debugging information at its startup into a file.

Any idea how can I have access to this serial port:
- do I have to access it thought the physical port of the server with a serial cable?
- can I access it thanks to some kind of virtual connection from another lpar (here running aix) or the vios itself?

Thanks in advance for all additional advise,
J.

Well I know well mkterm and even vtmenu but how should I log traffic which those prgm mainly receive?
e.g. I try (as I would do in a 'usual' unix env): # mkvterm -m MySystemID -p MyPartition name 2>&1 | tee /var/tmp/Pname.log
But this failed because restricted shell of hscroot user ignore 'tee', though.

Any other idea?

Tx,
J.

Well, you can run the mkvterm command remotely via ssh from another system. You can run it non-interactively (i.e., ssh hscroot@myhmc mkvterm ...) and set up ssh keys so that it doesn't prompt for password.

Steve

Jim,

Agree but what do you do if kernel failed to boot (I spoke here more about linux or grub?)

Tx,
J.