>> Currently all of my linux guests IPL CMS to create VDISK swap disks and
>> signatures.  For a linux to work with LGR it must IPL from a device or NSS so
>> no CMS if I want to LGR.  I've been doing it this way for so long I'm unsure 
>> of
>> how I would create the swap signature in my VDISKs without IPLing CMS
>> first.
>> 
>> Suggestions would greatly be appreciated.

>IPL 190.  While not optimal for memory usage, it circumvents most of the 
>problem.

IPL 190 solves nothing.  Whether you IPL from 190 or the CMS NSS is irrelevant. 
 To use LGR, you can't have any links to non-shared disks.  As Alan Altmark 
pointed out, your choices are to create a set of shared CMS disks or to detach 
the disks before IPLing Linux.

If you create a shared CMS, you get to design a maintenance process for it.  
SERVICE and PUT2PROD will update the non-shared CMS.  You either need to create 
PPF overrides, make MAINT 19x shared, or copy from the non-shared disks to a 
shared set.  You also need to make sure that the segments are the same on all 
nodes.  If I were to choose this approach, I would leave IBM's maintenance 
process alone, and copy from the non-shared disks to the shared disks every 
time I applied maintenance.  I would then resave the shared CMS (call it 
SHARECMS) on each node.  I'm not sure whether creating overrides or making the 
MAINT disks shared would work very well.  You might have problems if you 
PUT2PROD from multiple members onto the same disks, because it wasn't intended 
to work that way.

I didn't want to add steps to the maintenance process, so I chose to detach the 
MAINT 19x disks instead.


                                                       Dennis O'Brien

There are three kinds of people, those who can count and those who can't.

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