topic Re: Errors in Operating System - HP-UX

Errors

David Blair — Thu, 14 Sep 2000 14:25:02 GMT

Two questions:

1) Why would I get the error /dev/pts/tb: file table overflow when attempting to login to my unix machine?

2) If I am at the console and enter ^b to get to the GSP prompt, what do I do in there and how do I get out?

Can you tell I'm not an HP guy?

Re: Errors

Patrick Wessel — Fri, 15 Sep 2000 12:53:07 GMT

David,
log on to the GSP and use the command "he" to see what the GSP can do for you
(reading the logs, see the status of the power supplies, power cycle the box...)

Re: Errors

CHRIS_ANORUO — Fri, 15 Sep 2000 13:02:51 GMT

Increase the value of nfile from kernel configuration thro SAM

Re: Errors

Stefan Farrelly — Fri, 15 Sep 2000 13:13:30 GMT

1. file table overflow means youve exceeded a kernel value. Increase maxusers of nfile, rebuild the kernel and reboot to fix that.

2. GSP stuff - Patrick is the expert, see his answer.

Re: Errors

Alan Riggs — Fri, 15 Sep 2000 14:26:58 GMT

1 has been covered.

2 -- simple answer "co" returns you to console mode. Better answer -- use "he" and try every menu option to familiarize yourself with what it can do. Good stuff there.

Re: Errors

Bill Hassell — Fri, 15 Sep 2000 23:01:06 GMT

One caution about CTRL-B on all HPP 9000 servers: it does put in direct communication with the processor ROMs--on most servers, no login and password is required. There are some serious hardware commands in there that can take down the server and/or force a crash dump.

Be careful about allowing the system console to be in an unsecure area and protect the GSP (found on systems like the N- and L-class) with a login and password. On many servers, there is a switch or key to disable the CTRL-B access method.

Re: Errors

Bill Hassell — Fri, 15 Sep 2000 23:03:13 GMT

Re: Errors

James R. Ferguson — Sun, 17 Sep 2000 23:30:13 GMT

David:

Just to add to Alan's & Bill's comments. On K-class servers the key to which Bill refers in in the very front. It's a 3-position switch (off, normal, maintenance as I recall). On a D-class you will find a small, slide switch on the back of the cabinet. Because of the "power" available in the enabled mode, I prefer to leave the key or switch disabled so that an inadvertant CTL_B can't be issued. May save you a middle of the night call from an operator who inadvertanty got where they shouldn't.

...JRF...