Hmm..   RACF isn't really related as it's protecting minidisks on z/VM, at
least - and doesn't care about volsers the mindisks are on.    The process
for DIRMAINT is probably similar to the things that need doing on VM:Secure
to do the directory changes:

-  Make a 'monolithic' copy of the directory and run a PIPE to change all
volsers..  then initialize DIRMAINT using the new directory (USER INPUT)
-  Put the directory online (DIRM DIRECT)
-  Change EXTENT CONTROL similarly and do a DIRM RLDE

I'm in favor of labels using the rdev - unless you really have frequent
changes of DASD - to me, the benefits outweigh the occassional need to
update the directory.   YMMV, as this thread indicates.

Scott Rohling

On Thu, Aug 26, 2010 at 3:33 PM, Schuh, Richard <[email protected]> wrote:

>  That is absolutely the wrong thing to do. I am now suffering because
> someone else did that to dasd that is EMFFd to 3 LPARS. (It was all
> ZLccuu). It requires meticulous record keeping and is very error prone. I
> did wipe out a disk needed by one system because the records I received were
> not complete Fortunately, it was a disk that was to be used by a new system
> and had not been updated; it was easy to restore. Also, it is a huge
> headache if you ever replace your DASD. I don't know about RACF, but there
> is no mechanism built into VM:Secure for easily doing a mass update of
> volsers ( I know, you can change the volser with one command - if it is a
> VM:Secure .controlled disk and nobody is linked to it. The latter is hard to
> achieve around here.)
>
> Regards,
> Richard Schuh
>
>
>
>
>  ------------------------------
> *From:* The IBM z/VM Operating System [mailto:[email protected]] *On
> Behalf Of *Michael MacIsaac
> *Sent:* Thursday, August 26, 2010 10:55 AM
>
> *To:* [email protected]
> *Subject:* Re: Duplicate VOLID's
>
>
> >I do know what addresses my system disks are on,
> Ah! - an argument for the convention of using the RDEV as the last four
> characters of the volser :))
>
> "Mike MacIsaac" <[email protected]>   (845) 433-7061
>
>

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