I'm not familiar with IOX, but from a hardware standpoint, I don't see how it cannot be performing a read/update/rewrite cycle even if it hides the fact. And not just the record but the entire physical block containing it.
-- Mike Harding z/VM System Support [email protected] [email protected] [email protected] (925) 926-3179 (w) (925) 323-2070 (c) IM: VMBearDad (AIM), mbhcpcvt (Y!) CMSTSO Pipelines Discussion List <[email protected]> wrote on 04/25/2011 03:01:42 PM: > From: Glenn Knickerbocker <[email protected]> > To: [email protected] > Date: 04/25/2011 03:02 PM > Subject: update an existing disk record in place? > Sent by: CMSTSO Pipelines Discussion List <[email protected]> > > I'm pretty sure the answer is no, but just in case this is one of those > things I missed over the years: I've got an old exec with a bunch of > IOX UPDATE calls to update fields in existing records in files on disk. > Is there any pipelines stage that will do this without having to read > the unchanged portions of the record from the file first? > > ¬R
