topic Re: Reboot Using Changes From MODPARAMS in Operating System - OpenVMS

Reboot Using Changes From MODPARAMS

Robert Atkinson — Wed, 23 Jul 2008 08:38:54 GMT

I guess this is really a question I should know the answer to, but can anyone tell me the sequence of steps used to reboot a system using the current AutoGen settings, but also read the settings in MODPARAMS.DAT.

I.E. I've changed MIN_GBLSECTIONS in MODPARAMS, and need to reboot, but don't want to use SAVE_FEEDBACK as the system has only been up a few hours.

Thanks, Rob.

Re: Reboot Using Changes From MODPARAMS

Wim Van den Wyngaert — Wed, 23 Jul 2008 08:50:44 GMT

autogen help

Wim

Re: Reboot Using Changes From MODPARAMS

Robert Gezelter — Wed, 23 Jul 2008 09:11:39 GMT

Rob,

I agree with Wim. While it is obviously possible to reproduce it here, the best answer (by definition) is to use the HELP within AUTOGEN.

AUTOGEN allows the beginning and ending phase to be specified.

- Bob Gezelter, http://www.rlgsc.com

Re: Reboot Using Changes From MODPARAMS

Robert Atkinson — Wed, 23 Jul 2008 09:29:29 GMT

Read it top to bottom about a hundred times over the last 20 years, but it's still not obvious exactly what parameters would give me what I need, and I simply don't have the time to sit and test.

Guess this ones beaten you guys then?

Rob.

Re: Reboot Using Changes From MODPARAMS

Wim Van den Wyngaert — Wed, 23 Jul 2008 11:11:25 GMT

If you use GENPARAMS you can generate the last generated settings again (in case of lost settings).

If you use GETDATA GENPARAMS it will re-use the last feedback and mix it with the new MODPARAMS settings. This is what you need I think. If the last feedback was valid.

AUTOGEN can IMO not be used to apply only the modparams settings.

I normally apply them by hand if I don't want a feedback.

Wim

Re: Reboot Using Changes From MODPARAMS

EdgarZamora_1 — Wed, 23 Jul 2008 11:16:02 GMT

You can also specify NOFEEDBACK which I do all the time.

Re: Reboot Using Changes From MODPARAMS

Wim Van den Wyngaert — Wed, 23 Jul 2008 11:33:10 GMT

I'm not sure if NOFEEDBACK is always safe. It will recalculate parameters without feedback. Could that reverse a previous autogen done with feedback ?

I tested it and found ACP_DIRCACHE decreased from 352 to 196. Nothing about it in the modparams file.

Wim

Re: Reboot Using Changes From MODPARAMS

Ian Miller. — Wed, 23 Jul 2008 12:24:22 GMT

@SYS$UPDATE:AUTOGEN GETDATA SETPARAMS CHECK_FEEDBACK

should do the right thing as it it will use the current feedback file if it is valid and not make a new one.

Do check the report file and then reboot.

Re: Reboot Using Changes From MODPARAMS

Hoff — Wed, 23 Jul 2008 12:40:46 GMT

If you don't want to save the system feedback data during shutdown then, well, don't save feedback during shutdown. It's an option during shutdown.

Re: Reboot Using Changes From MODPARAMS

Robert Gezelter — Wed, 23 Jul 2008 12:54:25 GMT

Rob,

I agree with Wim, at least if my understanding of what you are asking is correct, GETDATA would seem to be the place to start.

If you want to be cautious, you may want to stop short of the actual REBOOT and check the new parameters against the prior ones to guard against surprises.

- Bob Gezelter, http://www.rlgsc.com

Re: Reboot Using Changes From MODPARAMS

Wim Van den Wyngaert — Wed, 23 Jul 2008 13:08:19 GMT

Ian,

"if feedback is suspect, autogen does not use feedack" (help).

How does autogen detect a suspect feedback ?

Wim

Re: Reboot Using Changes From MODPARAMS

Wim Van den Wyngaert — Wed, 23 Jul 2008 13:45:11 GMT

I checked autogen.com.

CHECK_FEEDBACK checks :
uptime must be > 24h
must have been taken < 30 days ago

That's all.

Wim

Re: Reboot Using Changes From MODPARAMS

Robert Atkinson — Wed, 23 Jul 2008 14:03:43 GMT

Hoff, not saving FEEDBACK during shutdown (assuming SYS$SYSTEM:SHUTDOWN here) is fine, except that it won't bring in changes to MODPARAMS.

That's what I need AUTOGEN for.

Rob.

Re: Reboot Using Changes From MODPARAMS

Ian Miller. — Wed, 23 Jul 2008 15:00:14 GMT

@SYS$UPDATE:AUTOGEN GETDATA SETPARAMS CHECK_FEEDBACK

check the report file here and then

@SYS$SYSTEM:SHUTDOWN 0 SHUTDOWN NO YES LATER YES NONE

If you want to skip the check of report file (not recommended)
@SYS$UPDATE:AUTOGEN GETDATA REBOOT CHECK_FEEDBACK

Re: Reboot Using Changes From MODPARAMS

Andy Bustamante — Wed, 23 Jul 2008 16:39:53 GMT

A slight difference from Ian's method.

@SYS$UPDATE:AUTOGEN GETDATA TESTFILES CHECK_FEEDBACK

Review AGEN$PARAMS.REPORT for warnings and changes.

@SYS$UPDATE:AUTOGEN SETPARAMS

Reboot when convenient.

I prefer not to run the SETPARAMS phase until I've seen the report file since I've been known to make typos once in a while.

Andy Bustamante

"There are nine and sixty ways . . . "