Re: a really little pipe question

[Marty Zimelis]

Title: RE: a really little pipe question

Here's something I've been using for years.  It accepts a string of one or more mode letters (space-delimited) as its parameter.  Since it's a personal tool, I never bothered to check for the case of no parameter supplied.  :-o

 

                    Marty

 

/* RELease and Detach the disk at the specified mode letter */
   Parse Upper Arg mode
   'pipe (name DREL end ?)',
      'var mode |',
      'split |',
      'spec /QUERY DISK/ 1 w1 nw |',
      'command |',
      'nlocate /not accessed/ |',
      'spec read',                           /* Consume header line */
           '/RELEASE/ 1 w3 nw.1 write',      /* RELEASE base mode */
           '/DETACH/ 1 w2 nw |',             /* DETACH vdev */
    'D: deal |',                   /* REL -> primary, DET -> secondary */
      'command',
    '?',
    'D: |',
      'nlocate w2 /DIR/ |',         /* Don't try to detach a directory */
      'cp'

---

From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Huegel, Thomas
Sent: Thursday, July 06, 2006 3:52 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: a really little pipe question

Everyone has been very helpfull.
Thanks
And now for the 'BUT..'
'REL x (DET' is so nice because I don't need to know the v-address of the disk I am detaching.
I'll survive though.

-----Original Message-----
From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU]On
Behalf Of Kris Buelens
Sent: Thursday, July 06, 2006 2:45 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: a really little pipe question

Most of the time there is not even a need for a HOLE stage.

HOLE is doing work: it is eating records, only the writing is skipped.
When HOLE is ommitted the stage to its right doesn't even try to write
records.  Next point: never use the CMS stage, use COMMAND instead if you
want to be sure of what happens.  So, instead of:
  PIPE CMS REL X | HOLE | CP DETACH 120 | HOLE
a tiny bit less expensive and safer:
  PIPE (end ?) COMMAND RELEASE X ? CP DETACH 120

> If you don't want to examine the messages, use HOLE instead of STEM.

> Brian Nielsen

> On Thu, 6 Jul 2006 12:03:06 -0500, Huegel, Thomas <[EMAIL PROTECTED]>
> wrote:

> >I guess either I wasn't clear or I hadn't engaged all of the brain
cells.
> >The 'REL Z (DET' of course works fine, the real question is that when
> doing
> >the REL DET as one command I get the console message ..
> >
> >DASD 01DB DETACHED
> >
> >But when doing them individually I don't get any messages.
> >
> >As in Allen's example I could just add a dummy STEM as the next stage.

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