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Mark,

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You can't logon to the virtual machine that is hosting the logical devices.? Thus, you cannot logon to XNET from an XNET created logical device session.? This is not an XNET restriction, this is the rules of LDF (the logical device facility).

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Regards,

Bob

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Mark,

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So, are you saying it is working while disconnected after all?? It sure looks like it from the console messages.

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Regards,

Bob

On Sun, Aug 18, 2024 at 07:36 AM, Bob Polmanter wrote:

You could also start spooling the XNET console log (in its profile exec) so that when it is autologged everything will be recorded; if it fails to work then you can go back and look at that log and see what the messaging says.

I forced and autologged both VMs. I was able to transfer the console file to MAINT and look at it. This one is from VM370DEV:

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?--- OK ? ? ? ? ? ? ? ? ?ID=0678 ? ? ? ? ? ? ? ? ? LINE=000001 OF 000022 CASE=U
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
XNET010 Cross System Net - V1.4.0 ? 07/15/22 10.42 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET002 XNET using configuration file XMASVMCE CONFIG ? * ? ? ? ? ? ? ? ? ? ? ??
XNET020 VM370DEV active ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
XNET016 CTCA 500 initialization in progress... ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET017 CTCA 500 is X-side ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET019 CTCA 500 connected to node VM370P01 (NETID= ?2) ? ? ? ? ? ? ? ? ? ? ? ??
XNET020 VM370P01 active ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
XNET012 Device 0C8 connected ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET028 GRAF 0C8 associated with VM370P01 L000 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET021 LDEV L000 associated with VM370P01 0C8 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET029 GRAF 0C8 disassociated with VM370P01 L000 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
XNET013 Device 0C8 disconnected ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
XNET015 LDEV L000 disassociated with VM370P01 0C8 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
14:08:05 ?MSG FROM MAINT ? : ?D NODES ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
#CP DISCONN ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
DISCONNECT AT 14:09:09 CST SUNDAY 08/18/24 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET012 Device 0C8 connected ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET028 GRAF 0C8 associated with VM370P01 L000 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
XNET021 LDEV L000 associated with VM370P01 0C8 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
CONNECT= 00:23:05 VIRTCPU= 000:00.22 TOTCPU= 000:00.94 ? ? ? ? ? ? ? ? ? ? ? ? ?
LOGOFF AT 14:15:49 CST SUNDAY 08/18/24 BY SYSTEM ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
* * * ?END OF FILE ?* * * ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??

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With the previously shown PROFILE EXEC, and the VM autologged. I could successfully DIAL XNET and log on to the other host!

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I probably have too many SETs such as SMSG in the EXEC, but I will leave it sit for a bit, and also shutdown and IPL to see how that goes.

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On Sun, Aug 18, 2024 at 07:36 AM, Bob Polmanter wrote:

Even if you autologged it and it is running disconnected, you can log on to it later and issue D TASKS and see if the CTCs are connected.

With the previously mentioned PROFILE EXECs in place, I disconnected both VMs and then was actually able to DIAL and LOGON to the alternate system!

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I tried to log on to XNET and was not allowed. This is the same for both VM370DEV and VM370P01.

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?... Mark S.

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On Sun, Aug 18, 2024 at 07:36 AM, Bob Polmanter wrote:

I've never tried to run it disconnected, or autologged.? I don't see any reason why you couldn't, except to say that if the CTC's don't connect for some reason you wouldn't know about it.? I suspect that is the problem here.

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I figured running disconnected would be fine, once I got done debugging the connections. The following is the VM370DEV PROFILE EXEC A. I thought it might be helpful to know the status after the program started, but I guess it clears the stack, so the XNET commands are not processed. See console screen results below.

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The following is the VM370P01 PROFILE EXEC A (I changed the node name and SYSID to not contain special characters):

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VM370DEV Console

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VM370P01 Console

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I also decided to make use of LOGMSG so I knew what system I was connecting to.

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?... Mark S.

On Sat, Aug 17, 2024 at 10:28 PM, Fish Fish wrote:

Besides, I've done much worse in my time. Very early in my career, I accidentally destroyed our sysres, and then after mounting our backup sysres, proceeded to accidentally destroy that one too! (Oops!)

It took us the entire night shift to completely rebuild it from scratch.

No tape backup?

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In ~ 1984, a friend related that at a previous job he likewise clobbered both sysres and its backup disk. He calmly told the operator to get the last night's backup. The operator told him that backups were taking too long, so the night shift had stopped running them. That is when the sweating started (and a similar rebuild from scratch was done).?

That story in turn reminds me that when I reorganized user packs with FDR, I did it after backups (which wrote two copies to different 9 track tapes) and than had the FDR reorg program write two more tapes. I wasn't gonna lose a pack because of laziness.

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All this explains why at 2:39 AM every morning, my Hercules host dumps my emulated systems via tar. It does a differential backup nightly and a full 24 GB dump weekly. They go to a 1 TB Micro SD card, which is good for a ~ year of monthly backups. (It prunes the weekly backups after 90 days).? It's not trivial to get a single file off the backup, but I've done it.

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-ahd-

Mark,

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I've never tried to run it disconnected, or autologged.? I don't see any reason why you couldn't, except to say that if the CTC's don't connect for some reason you wouldn't know about it.? I suspect that is the problem here.

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Even if you autologged it and it is running disconnected, you can log on to it later and issue D TASKS and see if the CTCs are connected.

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You could also start spooling the XNET console log (in its profile exec) so that when it is autologged everything will be recorded; if it fails to work then you can go back and look at that log and see what the messaging says.

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Regards,

Bob

Yes, of course.. Dick... senior moment there..?

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Those heady days of the mid-70's thru the 80's were great times for VM. I was the lead VM systems programmer at Home Savings at the time. We were running an $8B bank on a 3mb 158 under VM with DOS r25 guests along with the normal 50-80 CMS users. We had an online network of around 120-ish teller terminals. (The 158 got upgraded to a 168 and then a 3083 and onward.)

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The performance challenges of that online terminal network was one of the main motivations for us to engage with Lynn and others to discuss the rumored "Wheeler Scheduler" (which never made it into a shipped version of CP67) and how its concepts might address those challenges. These discussions along with other Share members resulted in the changes to VM that ended up with the features included in SEPP and, later, HPO

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Great times.. nice to think back on all we accomplished in those days.

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Cheers,

William Denton

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ps.. for the younger people here, you need to find a copy of the LSRAD report that "saved" VM from the MVS goliath

On Sat, Aug 17, 2024 at 07:11 PM, Gregg Levine wrote:

I see that Mark. There's a good reason waiting for it. What say that
when all of this is settled, and you've got the two systems seeing
each other, can you present all of this as a good example of
documentation?

I can present it as an example of documentation, a HOW-TO. Good will be in the eye of the beholder.

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?... Mark S.

On Sat, Aug 17, 2024 at 05:16 PM, Drew Derbyshire wrote:

Pro Tip: Don't add a typewriter console to DMKRIO and then tell Hercules that device address is a card reader.

Does that mean it could give itself instructions independent of a human? ;-)

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?... Mark S.

Bob,

I added XNET to AUTOLOG1 and it is running disconnected. I can dial XNET and get the menu, and choose a system, but it does not connect.

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On Sat, Aug 17, 2024 at 02:56 PM, Bob Polmanter wrote:

So I think if you fix adjacent node in the CONFIG file in VM370DEV, then restart XNET on both sides with a fresh IPL 190 first, you will be good to go.

Bob,

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Thank you so much for your patience! I now have a two node XNET working!!

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I also rebuilt CP so the SYSID name matches the NODE name. I'll need that (and fixing SYSTEM NETID) for RSCS.

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?... Mark S.

Pro Tip: Don't add a typewriter console to DMKRIO and then tell Hercules that device address is a card reader.

The combination sent a VM SIXPACK system from 1% host CPU to 100% host CPU, and internally had CP LOAD IND showing 79% CPU utilization without CPWATCH showing any users busy.

I was using the default DMKRIO for the SIXPACK systems and my default (included) configuration for for S/370 hosts. Hence the incompatibility.?

-ahd-

Hi Mark,

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I found the problem.? It is in your XNET configuration.? I completely missed it before.? Here is the problem, and it is in the CONFIG file for VM370DEV only.? The CONFIG for VM370-01 is correct.? The adjacent node number is incorrect.? Here is what you show you have coded in earlier messages:

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FSVIEW: XMASVMCE CONFIG C1 ? ? ? ? ? ? ? Lines 1-31/31 V80[1-79] ?FSVIEW V1.2.5
* ? ? ? nodename ?netid
* ? ? ? -------- ?-----
?LOCAL ?VM370DEV ? ?1
* ? ? ? ? ? ? ? ? ? ? ? ? ????????????????via
* ? ? ? nodename ?netid ?netid
* ? ? ? -------- ?----- ?-----
?NODE ? VM370-01 ? ?2 ? ? ?1

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The ‘via’ netid should be a 2 in this case.? To get to node 2, you have to get there via the link-up to node 2.? Hence 2 is the adjacent node.? Your config for the VM370-01 is correct and correctly says adjacent to 1.

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So I think if you fix adjacent node in the CONFIG file in VM370DEV, then restart XNET on both sides with a fresh IPL 190 first, you will be good to go.

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Regards,

Bob

On Sat, Aug 17, 2024 at 02:16 AM, William Denton wrote:

ps.. how do you happen to have access to Lynn's email & notes.. just curious

See Bob's response. I never talked to him, but heard much about him at the few SHAREs I was able to attend. Ran into his e-mails on a discussion list and he referenced the web site.

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AMAZING!

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?... Mark S.

Lynn Wheeler's musings are online and available to everyone.? Here is the URL:

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The newsgroup postings is where a lot of the good stuff is, particularly the older ones.? There is a lot of stuff here.

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Regards,

Bob