----- Original Message -----
From: "Paul Gilmartin" <[EMAIL PROTECTED]>
Newsgroups: bit.listserv.ibm-main
Sent: Saturday, January 12, 2008 8:07 PM
Subject: Re: SMP/E and why not.
On Sat, 12 Jan 2008 17:55:27 -0500, Robert A. Rosenberg wrote:
My biggest gripe with the design of SMP/E is the use of a RESTORE
design that will back-out a PTF (or set of PTFs) to get back to the
state you were in (or would have been in) before you APPLY'ed the
PTF(s). Right now you must RESTORE PTFs that you will just turn
around a reAPPLY just to RESTORE a PTF that PREs or SUPs the PTFs. A
better design is to see what SYSMOD owns each element that is being
RESTOREd and just do an automatic APPLY of only that element instead
of removing elements that are not contained in the PTF being RESTOREd.
I agree wholeheartedly. RESTORE should be "Undo", as we know it
on our desktop systems. I grant that it's logically impossible
to RESTORE to a level of an element that's been PURGEd from the
SMPPTS; otherwise, if the content is in the SMPPTS (and/or TLIBs)
it should be permitted to RESTORE it. I suspect the CSI simply
fails to retain information needed for this task.
However, Kurt Q. is apt to point out, as he has done several times,
that this was not the design objective of RESTORE; it's more like
"Revert" as we know it on some of our desktop systems. He will
be supported in this by several True Blue followers of this list.
Are you guys willing to pay the cost in DASD to keep every single level of
every single module in the potential chain of a RESTORE? Your example is
simplistic, and does not take into consideration the real world cost of
doing what you advocate. If you really want to do what you just said, all
you have to do is ACCEPT PTF1, and then the RESTORE of PTF2 will only
restore that PTF. Remember that RESTORE takes every module in the PTF chain
back to the ACCEPTed DLIB level. If you want the intermediate levels to be
labeled "good", just ACCEPT the PTFs except for the one(s) you want to
RESTORE, then you will get what you want. Good luck with that.
Regards,
Tom Conley
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