IODF questions
- From: JohnstonRobertE@xxxxxxxx (Johnston, Robert E)
- Date: 30 May 2008 13:52:29 -0700
We converted from a z800 to a z9BC in February (z/OS 1.7). We had been using
a shared SYS0 IODF for years, but when I created the IODF for the z9 I used
SYS1 from the PROD z800 LPAR (thinking keep it separate). This SYS1 IODF was
used to create the z9 IOCDS, which was used to POR the z9 and IPL the PROD
and TEST LPARs.
I knew you could IPL with an uncataloged IODF, which is what I did for the
TEST LPAR. I didn't realize that you could not make any HCD changes if the
current IODF was not available (different MCAT), so HCD was dead on Test.
To try and get back to shared, I created a SYS0 on Prod and tried to
activate. That didn't work because you can't change the HLQ for the IODF on
an activate (CBDA836I), only the IODF suffix.
So, from the same work IODF, I created a prod SYS1.IODF05 and a prod
SYS0.IODF05 and wrote them to 2 different IOCDS's in the z9. I did a hardware
and software activate on Prod using SYS1.IODF05. Activate was successful and
HCD says I can still make h/w and s/w changes.
Next I IPLed Test using the shared SYS0.IODF05. I expected to only be able to
make s/w changes but HCD now says I can make h/w and s/w changes. (If I did
make any changes from Test I don't think I could activate them on Prod.)
To straighten things out, I'm going to need to POR with the IOCDS created
from SYS0 and IPL both Prod and Test with SYS0. Right?
Am I living dangerously with the config that I have right now? We don't make
many changes and "never" go down. The changes I just made were to add
Explicit Device Candidate Lists to our DASD address to segregate some DASD
for Linux (I am about to venture into Linux land...). I suspect that if I
need to make another change before POR that I could repeat the SYS1/SYS0
process. Am I forgetting anything or is there something that might bite me
that you can think of?
Sorry for the length. Thanks for any input and have a good weekend...
Robert Johnston
UAMS - Little Rock, AR
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