topic Re: OPA0: outputs data, but dead to input in Operating System - OpenVMS

OPA0: outputs data, but dead to input

SG Smith — Fri, 24 Jul 2009 15:13:29 GMT

We've got a cluster of ES47s, all using Consoleworks for console mgt. One of the ES47s is not accepting a RETURN to get a login prompt. However, data is being received by Consoleworks on the port. We've checked the port settings on the DS700, and working consoles are configured the same as the "dead" console. Ditto for SYSGEN TTY parameters, they look the same between servers. Show term opa0: looks to be the same between nodes.

Disabling Consoleworks and telneting to the terminal server / port has the same symptoms, pressing the enter key echos a carriage return/line feed.

Suggestions?

Re: OPA0: outputs data, but dead to input

marsh_1 — Fri, 24 Jul 2009 16:34:12 GMT

hi,

used to use build eeprom on our gs80's if they got stuck like this, but your console is very different so don't know that it would be valid or available.

fwiw

Re: OPA0: outputs data, but dead to input

cnb — Fri, 24 Jul 2009 17:38:48 GMT

Were any of the console components 'hot-swapped' by chance?

Rgds,

Re: OPA0: outputs data, but dead to input

SG Smith — Fri, 24 Jul 2009 18:02:37 GMT

No, nothing has been swapped. The servers have been in place for close to a year. Firmware was updated during initial installation to 7.3a (which is still current). The ES47s have been booted for application software installations. I'm beginning to thing that a power cycle might be a good thing!

Re: OPA0: outputs data, but dead to input

Hoff — Fri, 24 Jul 2009 18:03:05 GMT

For giggles, try aiming the following command sequence at the recalcitrant console device:

SET PROCESS /PRIVILEGE=SHARE
SET TERMINAL /XON OPA0:

And see if it clears the weirdness.

Re: OPA0: outputs data, but dead to input

Steve Reece_3 — Sat, 25 Jul 2009 05:39:55 GMT

I don't see any suggestions of changing cables here on the console port - that would be my first action. I've seen null modem cables fail with one or other direction failing to communication (i.e. can get output from OPA0: but can't supply input or vice versa).

That plus Hoff's comments "should" get things moving or will, at least, give more diagnostics.

Have you checked the console connection on the box? IIRC, the ports on the ES47 are buried on the top of the system such that you have to pull it out of the rack to get to the connections. Whoever designed these boxes had some interesting ideas (though probably justified.)

Re: OPA0: outputs data, but dead to input

SG Smith — Mon, 27 Jul 2009 11:15:59 GMT

Thanks to all for suggestions. We had an application software install that "requires" a reboot, which was the concern. Trying the /xon didn't seem to help. It was decided to power cycle the 2P drawer, and after that, OPA0: started working bi-directionaly.