I sent Dale a TYPE of two cyl 0 head 0 (one of z/VM 5.3 and one of an
"ICKDSF CPVOL"-ed Tdisk)

2008/1/18, Dale R. Smith <[EMAIL PROTECTED]>:
> The VTOC should start right after the volume label.  The first record in
>
> the VTOC should be the FMT4 (Format-4) DSCB record.  The second record in
>
> the VTOC should be the FMT5 (Format-5) DSCB record.  Here is a pointer to
>
> the layout of the Format-4 DSCB:  http://publibz.boulder.ibm.com/cgi-
> bin/bookmgr/BOOKS/dgt2s330/1.1.1.5?
> SHELF=ez2zo10f.bks&DT=20050617115137&CASE=
> Layout for the Format-5 DSCB:  http://publibz.boulder.ibm.com/cgi-
> bin/bookmgr/BOOKS/dgt2s330/1.1.1.6?SHELF=ez2zo10f.bks&DT=20050617
> 115137
>
> Unfortunately, I don't have access to a VM system currently, or I would
>
> take a look myself.  Kris, if you want to email me the the output of DDR
>
> TYPE, I'm willing to take a look at it and try to decipher it!  :-)>
>
> --
> Dale R. Smith
>
> "Duct tape is like the Force, it has a dark side, it has a light side,
> and it holds the universe together."
> - Carl Zwanig
>
> On Fri, 18 Jan 2008 17:17:32 +0200, Kris Buelens <[EMAIL PROTECTED]>
>
> wrote:
>
> >DDR TYPE of cyl 0, track0 is still a lot of data.  One should know which
>
> >fields to display.
> >
> >2008/1/18, Dale R. Smith <[EMAIL PROTECTED]>:
> >>
> >> IIRC, ICKDSF CPVOLUME FORMAT is supposed to set the FMT5 DSCB in
> >> the "VTOC" for a volume to indicate that there is no free space on the
>
> >>
> >> volume.  The FMT4 DSCB should contain the size of the volume.  I'm not
>
> >>
> >> sure what DITTO is looking at, but z/OS should be using the FMT5 DSCB.
>
> >>
> >> What does a DDR TYPE of cylinder 0, track 0 show?
> >>
> >> --
> >> Dale R. Smith
>



-- 
Kris Buelens,
IBM Belgium, VM customer support

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