topic Re: What commands are allowed after control-p in Operating System - OpenVMS

What commands are allowed after control-p

Wim Van den Wyngaert — Tue, 13 Mar 2007 11:29:15 GMT

in such a way that "continue" resumes the (cluster) node.

Just tried a show config and the node booted when doing continue.

Wim

Re: What commands are allowed after control-p

labadie_1 — Tue, 13 Mar 2007 11:33:36 GMT

Is it an Alpha ?

How much is recnxinterval ?

If you wait for more, you will cluexit :-)

I have done quite a number of times, on satellites that I wanted to remote boot later
>>> set mop 1
>>> set trig 1
>>> set pswd xxxyyy
>>> C

and it was fine

Re: What commands are allowed after control-p

Ian Miller. — Tue, 13 Mar 2007 11:36:12 GMT

perhaps you did not type quick enough :-)

(halted longer than RECNXINTERVAL)

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Tue, 13 Mar 2007 11:38:30 GMT

On Alpha. Recnx is 900 sec. The show config took 50 seconds.
After typing continue the 4100 said :
continuing CPU 0
halted cpu 0
halt code = 2 (something for Volker)
kernel stack not valid halt
...

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Tue, 13 Mar 2007 11:40:00 GMT

Correction. Did a show dev.

Re: What commands are allowed after control-p

labadie_1 — Tue, 13 Mar 2007 11:42:29 GMT

Do you have recnxinterval=900 on all members of the Cluster ?

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Tue, 13 Mar 2007 11:44:16 GMT

Yes, 900 on all members.

Re: What commands are allowed after control-p

Hoff — Tue, 13 Mar 2007 11:44:24 GMT

I would assume none, as a general rule.

Mind providing a little more detail?

The processing of Ctrl/P chord or the console break (halt; serial line framing error) is dependent on the particular console. The AlphaServer ES47, ES80 and GS1280 do not generally permit a successful recovery from and continuation, for instance.

On other VAX and Alpha boxes, most any non-destructive command will generally work. Even a careful deposit into memory will work. And you will be able to continue. INIT won't work.

On the Integrity series (V8.2-1 and later have Ctrl/P), and this invokes IPC. You don't get to the EFI console, short of a forced crash. You can select the crash, or other specific high-IPL tasks.

Integrity does not have a continue command, nor the capability to continue after a halt.

Now if the node is a member of a cluster and the reconnection interval timer (RECNXINTERVAL) fires, the node will be tossed out of the cluster regardless. A link-perform sequence and other console-level techniques can be used to shorten the time at the console -- link-perform is particularly useful with a VAX with an out-board console.

For most cases where I've used the console to patch the system, AMDS or AvailMan can be a better alternative. Depending on exactly why you are halting the system, of course.

Stephen Hoffman
HoffmanLabs

Re: What commands are allowed after control-p

labadie_1 — Tue, 13 Mar 2007 11:46:59 GMT

On Alpha Tru64 you have a program that gives you most of the console parameters while running, I do not know if this program is available for Vms.

I will try to check.

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Tue, 13 Mar 2007 11:55:22 GMT

Just tried it on AS1000.
It doesn't say anything after "continuing CPU 0" but goes into hang. Control-P not working. Had to visit the node and reset it.

Wim(going home)

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Tue, 13 Mar 2007 11:56:15 GMT

BTW : remember a nice feature of HP3000. It asked "Abort Y/N ?".

Wim

Re: What commands are allowed after control-p

labadie_1 — Tue, 13 Mar 2007 11:57:19 GMT

What is your firmware version/ Vms version ?

You seem to have a weird problem.

Re: What commands are allowed after control-p

Volker Halle — Tue, 13 Mar 2007 11:58:01 GMT

Wim,

I don't think you can expect the operating system to continue after typing CTRL-P and issuing any arbitrary command at the SRM prompt. You may get lucky with some commands, but as soon as the console looses the system state information, you can't continue the OS.

The Alpha ARM manual has to say (Console Interface Architecture (III) - Chapter 3.5.8 Operator Forced Entry to Console I/O Mode):

The console clears the OH (Operator Halt) flag before returning to program I/O mode as a result of a CONTINUE or BOOT command. The console may clear OH flag if an error halt or operator-induced condition is encountered that precludes a subsequent CONTINUE command. Such a condition is treated as an error halt.

... as you've seen (Halt=2 = kernel stack not valid).

Volker.

Re: What commands are allowed after control-p

Andreas Vollmer — Tue, 13 Mar 2007 17:07:17 GMT

Hi Wim,

A SHOW DEVICE command on a SCSI Cluster will reset the register of the IO adapter.
The important SW context for continuing OpenVMS get corrupt and bingo.
Simple console commands will work such as show console etc.

So far I get the impression you would like to do an inventory of your server respectively the configuration.
Try to get a copy of Revision and Configuration Management (RCM) from HP.
With that tool you can online collect the configration information and even reports.
This tool will decode the cryptic adapter ID's (mostly).
Try this link:
http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=RCMBASE01

BR
Andreas

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Wed, 14 Mar 2007 02:45:02 GMT

Adreas,

Tried the tool but it wasn't capable of reporting the HSZ70. Not the cards in it (on a 4100).

I included the result in html for those who are curious.

Wim

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Mon, 19 Mar 2007 11:22:48 GMT

BTW : help is allowed but type it completely or it could be halt.

Wim

Re: What commands are allowed after control-p

Andreas Vollmer — Mon, 19 Mar 2007 15:56:07 GMT

Hi Wim,

Sorry to hear that the tool can't handle the HSZ's.
I doubt if there is a tool that can handle ALL configurations automatically.
The HSZ configuration could be documented by using the HSZterm SW.
This SW enables you to to connect from the running system to the HSZ controller.
Such as SET HOST/SCSI ddcu: => SET HOST /SCSI $1$DKC1:

Then you can issue the necessary commands...
SHOW THIS FULL
SHOW OTHER FULL
SHOW STORAGE
SHOW FAILED
SHOW DISK
etc. => use help
Press F10 for exit

HSZterm works also with HSG's

Where to obtain HSZterm? Good question...
I thought it was on the freeware CD but I couldn't find it.
Send me an Email if you are interested.

Regards
Andreas

Re: What commands are allowed after control-p

Hoff — Mon, 19 Mar 2007 17:07:14 GMT

http://www.djesys.com/freeware/vms/hszterm.zip

Re: What commands are allowed after control-p

Dean McGorrill — Wed, 21 Mar 2007 11:01:33 GMT

>http://www.djesys.com/freeware/vms/hszterm.zip

I've been looking for something like that, but the zip looks like it contains files
that got crunched. you can't type the text
files, %BACKUP-F-NOTSAVESET for HSZTERM010.A
etc. is there another pointer to a good kit?

Re: What commands are allowed after control-p

Wim Van den Wyngaert — Wed, 21 Mar 2007 11:04:35 GMT

Try Set File/attribute=(lrl:32256) savesetname.bck

before using backup.

Wim