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Rebooting rp5450 with possibly bad GSP

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Kris Knigga
Advisor

Rebooting rp5450 with possibly bad GSP

Hello all,

I have an rp5450 with a GSP that may be bad. I got an EMS notification saying that the "service processor is not functioning" and the console isn't responding (everything else about the system is running fine). I tried "stty +queryGSP < /dev/GSPdiag1", but that returned "GSP is functional".

My next step is to give "stty +resetGSP < /dev/GSPdiag1" a shot. I understand this to be a relatively safe command, but I have seen the odd report that this can lock up the entire machine.

So, my question to you all would be, what happens if the GSP really truly is bad and this sucker ends up locking up and I have to cycle the power on it? Will the system boot with a bad GSP?

Thanks a lot!

Kris
5 REPLIES
Torsten.
Acclaimed Contributor

Re: Rebooting rp5450 with possibly bad GSP

As long as the system is configured to boot automagically, it should boot.

If it waits for your input on the console, you are lost.

The old GSPs don't like, when you e.g. work with a hp and a vt100 terminal at the same time - result is a freeze.

Check the settings with "setboot" from hp-ux, shut down, pull the plugs and boot again.

Hope this helps!
Regards
Torsten.

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Torsten.
Acclaimed Contributor
Solution

Re: Rebooting rp5450 with possibly bad GSP

... first try the resetGSP command - I have never seen this failing on this server.

After this you may consider to press the GSP reset button manually (it is behind the side door) - but first tell the result of the reset command.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
Kris Knigga
Advisor

Re: Rebooting rp5450 with possibly bad GSP

The business wants me to wait until a downtime window, which will probably be this weekend. I'll post the results once I'm allowed to give it a whirl.
Armin Kunaschik
Esteemed Contributor

Re: Rebooting rp5450 with possibly bad GSP

From my experience a broken GSP can prevent the system from booting. But only in some cases when the query returns "non functional".
Your GSP "simply" seems to hang. In this case a HP-UX reboot would not bring the GSP back but would (very probably) succeed. You need to reset the GSP either with stty or by pressing the button in the back of the machine.

After GSP reset please check firmware of the machine and the GSP and update if necessary!

My 2 cents,
Armin

PS: Assign points if you find answers useful!
And now for something completely different...
Kris Knigga
Advisor

Re: Rebooting rp5450 with possibly bad GSP

The reset went without a hitch and the console is again available.