topic Re: Console problem in single user mode in Operating System - HP-UX

Console problem in single user mode

Xavier Gutierrez_2 — Mon, 26 Feb 2007 15:45:07 GMT

Dear folks.

We are experiencing trouble with one of our N4000 servers. It is running HP-UX 11.00 (yes, we will upgrade it to 11.i shortly!).

In the mean time, we wanted to add some security patches that we still had not applied.
In order to do that, we do the following steps (roughly):
0.- take an ignite tape
1.- split the OS mirror
2.- boot from in maintenance mode from the split disk to verify that it is workable
3.- boot back into normal mode
4.- apply patches
5.- reboot
6.- roll-back (or reverse merge the mirrors/boot from ignite if needed)

Our problem with this box is that when booting into maint mode to test the mirrors (from either the original or the split one) seems that the console remains in read-only mode for some reason (i.e. we get the prompt but cannot write to it)

The console works 100% OK in multiuser mode and other servers work in all modes.

My guess is there must be some configuration parameter somewhere that sets the terminal (the RS232 console in this case) to read only.

Anyone experienced this before?

Any ideas appreciated!

Thank you,

Xavier.-

Re: Console problem in single user mode

Ivan Krastev — Mon, 26 Feb 2007 15:51:56 GMT

See this thread - http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=84053

Press Ctrl+e cf to go in normal mode.

regards,
ivan

Re: Console problem in single user mode

Xavier Gutierrez_2 — Mon, 26 Feb 2007 16:07:44 GMT

Ivan,

Thanks for your reply.

However, this is not the case. I meant read-only mode but for the device file itself or something like that.

We do not even get the type CTRL+E cf message in the screen.

We simply can't type to the console.

We can type CTRL+B and access GSP menu but not to the /dev/console device so to say...

1 point anyway for taking the time.

Regards,

Xavier.-

Re: Console problem in single user mode

Xavier Gutierrez_2 — Mon, 26 Feb 2007 16:13:06 GMT

Just to center the shots:

I'm looking at things like:
1.- Wrong shell. (it's ok)
2.- /etc/securetty issues. (it's ok)
3.- /etc/inittab issues. (seems ok)
4.- device file issues. (seems ok)
5.- what else????

Thanks,

X.-

Re: Console problem in single user mode

Sheriff Andy — Mon, 26 Feb 2007 18:22:39 GMT

Have you seen this link?

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1069837

Also, what kind of console (model) do you have that you are trying to connect with? Maybe some other users may be able to assist as well.

Re: Console problem in single user mode

Xavier Gutierrez_2 — Tue, 27 Feb 2007 05:58:33 GMT

Hi, Andy.

Thanks for the link, that helps me with my Wstation setup ;-)

However, in the N4000 case the console works always *BUT* when the single user -or- maintenance mode prompts are shown. At that point, it accepts no input from keyboard.

BTW, we're using Cyclades (linuxplanet based) console servers and there are several other servers connected to the same console server as this N4000.

Regards,

XG.-

Re: Console problem in single user mode

Sheriff Andy — Tue, 27 Feb 2007 11:27:56 GMT

Sorry I can't help you out with the console in this matter.

Would you consider using a laptop thru hyperterm? Just a thought.

Maybe someone else out there with the same monitor can help you with the config.