While this series of commands [listing via eof, then altfile'ing back to
dev=disc] may work in some cases, I personally don't think it is an
"appropriate" use of MPEX.  There are some "flaws" in the method presented:

  -- first, since it was postulated that "the largest files should be moved
first" one should "sort by the EOF".  However, this will virtually GUARANTEE
that "bytestream" files, which may be many times smaller than, say, a
database, will "sort first" since their EOF is measured in terms of 1-byte
record lengths...
     [try sorting by sectors already consumed, but even this will be
innaccurate]

  -- altfileing a file from dev=disc to dev=disc may not move a file if
indeed it is already ";xltrim"ed.  Also, some folks may have created other
classes than "disc" to ensure a file resides on a certain cluster of disks
(or avoids ldev-1)  Admittedly, the command file can (and should) be
customized per site, but it only takes running it "wrong" once to really
screw up a system...

> -----Original Message-----
> From: Steve Cooper [mailto:[log in to unmask]]
> Sent: Wednesday, December 06, 2000 10:32 AM
> To: [log in to unmask]
> Subject: Re: Disc Space
>
>
> While bArtoque's MPEX script might well provide the
> defragmentation that
> Stephen is looking for, once he purchases MPEX, his choice of name for
> the script is unfortunate.  De-Frag/X is already the name of a product
> that performs defragmentation and much more.
>
>  (***PLUG ON, since Allegro has some connection with this product.)
> Information on the real De-Frag/X product can be found at Lund
> Performance Solutions, http://www.lund.com .
>
> I hope the script's name does not cause any undue confusion.
>
> Steve Cooper
>
> On Tue, 5 Dec 2000 20:25:55 +0100, "bArtoque" <[log in to unmask]>
> wrote:
>
> >Hi Stephen,
> >
> >If you'ld be planning to defrag later on anyway, even after
> balancing by the
> >system itself, and you're using mpex then there's the
> possibility to defrag
> >without using even another 3 party software package.
> Unfortunately I only
> >found this out AFTER I reloaded our machine to get rid of
> fragmentation, so
> >I haven't used it (yet)... Nice thing, as it can be run online
> >
> >bArtoque
> >
> >DEFRAGING YOUR DISKS WITH MPEX/3000
> >-----------------------------------
> >...
>