But if this did indeed happen as described, you haven't answered the
basic question about how this could have been allowed by MVS. MVS is
not supposed to allow two volumes with the same volser online at the
same time, as a volser is supposed to be a unique identifier of an
online physical volume. It makes no difference if both are shared and
accessible at IPl time. If two identical volsers are found that should
be online, I have never seen a case where MVS did not complain and ask
which of the two should be placed offline before allowing the MVS start
up to proceed. Somehow MVS would have to be convinced that both were
the same physical device, which would require something really bizarre,
like MVS thinking the address of one was a PAV alias address for the
other, and information received from the DASD subsystem ought to
preclude that from happening.
Joel C Ewing
On 10/04/2010 07:22 AM, Richbourg, Claude wrote:
Check your IODF definition and see if the volumes are defined as
'Shared' and set to come online at IPL time.
If so, when you vary them offline before an IPL, they will come online
at IPL time. You may need to search for DASD volumes that are only
accessible from the LPAR you wish them to be on. BTDT and it will make
your hair gray.
Hope that Helps,
Claude
--Snip --
I am posting to the list, while I go search IBM for the cause and/or
answer, in
case someone has the answer already. Upgraded to z/OS V1.11 on new
2098-
K02, with new IBM DS6800 dasd array. Have been testing on Test LPAR
since
May. Night of actual cutover to new machine, did IPL, started
everything and
it all went mostly well (will not discuss testing protocol here). Did
IPL
Saturday night and things have been hosed up since. Lots of wierd
little
problems, all related to datasets on disk. Got called tonight, apps
group
unable to resolve issue. I start looking and find one of my production
volumes
online. Only problem, I find the Test LPAR version of this same volume
online
too. They have the same volser. I have been back through the log,
looking
at all of the IPL messages, nothing related to duplicate volser (which I
am
used to). Thanks in advance for your help.
Steve
--
Joel C. Ewing, Fort Smith, AR [email protected]
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