Kris,

I actualy use the spool method in the very real present if I have to
transfer a handful of small files - simply because I think the method is
less error prone.

I use the minidisk method for large transfers. And then, before copying from
the 1st level I make sure I do DEFINE MDISK on the basis of an _up to date_
info, whichever way I get that info. If I am on the 2nd level, I make sure
that I _RELEASE/DETACH_ any 1st level minidisks that I linked to avoid
unintentionally using backlevel or wrong-level files later on. Using spool
is at least three times slower (punch, read to 2nd level spool, read to
disk), but you have less to worry about.

You can surely use RDEVICE if you are not eager enough to find out wether
that SYSTEM CONFIG change actually worked. :-)

Cheers,

Ivica Brodaric
Tabcorp, Australia

-----Original Message-----
From: VM/ESA and z/VM Discussions [mailto:[EMAIL PROTECTED] On
Behalf Of Kris Buelens
Sent: Saturday, 10 December 2005 2:46 AM
To: [email protected]
Subject: Re: 2nd-Level VM Install Question - Side question

The technique below does indeed work, I used it too in ancient history. 
But, given that VM no longer needs an assembled, rigid, HCPRIO, you can
access each and every minidisk of your first level system in your
secondlevel (as Alan already pointed out).
- Often secondlevel users have their secondlevel console on the same 3270
session as the first level VM.  So, a PA1 brings you to first level where
you can enter #CP LINK lvl1user vdev vdev2 RR
- Otherwise, on a firstlevel user issue CP SEND CP LVL2VM LINK lvl1user vdev
vdev2 RR
- And, if you plan to use secondlevel system regulary, get the CP1STLVL
package from the download lib and every authorised user on the secondlevel
system can issue commands like CP1ST LINK lvl1user vdev vdev2 RR Once you
have the LINK, an ATTACH vdev2 xxxx vdev3 R/O and an ACCESS is all you need.

To work the other way around: I use DEFINE MDISK indeed, but, with an EXEC
that gets the MDISK addresses directly from a CMS file that contains the
secondlevel directory.  This exec also takes care of ATTACH to SYSTEM of the
dasd hosting the minidisk, at the end the dasd is DETACHED again.

And, a last remark: in the pedestrian method below, it is suggested to
re-IPL.  No need for that, everything can be done dynamically.  Simply issue
SET RDEVICE 000C TYPE READER etc.  Updatin the SYSTEM CONFIG file makes that
you don't need to repeat the SET REDVICE comman(s) after each IPL.

Kris,
IBM Belgium, VM customer support


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