As stated, one has it R/W the other R/O. Someone has to log on to the machine 
that has it R/W to update it, there is nothing in the machine, itself, that 
writes anything. I am aware of MDC, and it is not in play, here. Both are on 
the same VM system. The update was done while both were logged off. The file 
was only updated once. The trials, including several logoff/logon sequences, 
spanned a couple of hours on a system that is lightly loaded.


Regards,
Richard Schuh





________________________________
From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf 
Of Kris Buelens
Sent: Wednesday, December 29, 2010 2:09 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Configuration Puzzler

Your machines don't share it in MW mode?  If yes, anything is possible....
They are on the same z/VM system? If not, the MDC cache on the system that 
didn't update the disk can be backlevel.

2010/12/29 Schuh, Richard <rsc...@visa.com<mailto:rsc...@visa.com>>
We have two service machines, I will call them A and B for this discussion. 
These machines share a 191 disk. When A is xautologged, it initializes itself 
and then xautologs B. I logged both machines off and added two new ACCESS 
commands to the PROFILE EXEC. I then logged A on and checked its configuration. 
It reflected the changes from the PROFILE. It AUTOLOGGed B. B came up using the 
old profile. I stopped the server code on B and checked the configuration. It 
was indeed the old profile that was used. A q links 191 showed that A had it as 
its 191 in R/W mode, while B had it as 191 R/O. A list profile exec * found 
only one such file, on the A disk, , and on B it was the old configuration. I 
then logged both off and xautologged A. Again, B came up with the old 
configuration. I tried the logoff/logon sequence several times, all with the 
same result. I finally detached the 191 disk from B and relinked it. This time, 
the new profile exec was there, like it should have been all along.

How is this even possible? Are we going to be plagued by this every time we 
xautolog A? Clearly the pointers were all correct when the first machine logged 
on. Given that, I would certainly expect that they would be correct when the 
second machine linked to the same disk and accessed it.


Regards,
Richard Schuh






--
Kris Buelens,
IBM Belgium, VM customer support

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