Hi

 

I have a question. What I have been doing up to this point for a new
z/Linux guest build is, not necessarily in this order and does not
necessarily include all steps but, 

 

Crave out the DASD for the z/Linux guest

 

Init the DASD using CPFMTXA putting a label on the disk

 

Setting up the Directory entry for the new guest, which includes
specifying the MDISK for all of the DASD for the guest.

 

We back up our z/Linux guests on the z/OS side with DFDSS.

 

My question is since when we Kick Start the new z/Linux guest and it
initializes the DASD during this process is there any compelling reason
for me to initialize the DASD up front before the guest is Kick Started
for the first time basically doing a double INIT?

 

If not I assume then I would replace the MDISK statements in the
Directory entry with DEDICATE statements for each one of the DISKS. We
do not share DASD between guests here so what is defined to the guest
belongs to that guest only. Is there anything to be aware of by changing
to DEDICATE statements from MDISK statements? 

 

My only concern is with the DFDSS backups that I do on the z/OS for the
guests. I am not sure if it matters or not to DFDSS whether the pack was
initialized via CPFMTXA or z/Linux during the kick start process?

 

 

Thank You,

 

Terry Martin

Lockheed Martin - Citic

z/OS and z/VM Performance Tuning and Operating Systems Support

Office - 443 348-2102

Cell - 443 632-4191

 

 

 

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