On Wed, 6 May 2015 16:19:31 -0400, Tony Harminc <[email protected]> wrote:

>On 6 May 2015 at 15:07, John Eells <[email protected]> wrote:
>> I never actually checked, but I "assume" that ISPF and other things that
>> show used space in allocation request units other than tracks or cylinders
>> use the DS1DSPAC fields and track length to calculate space in those
>> original request units.
>
>But how does it know what those original units were?

DS1DSPAC shows you the original _units_ (trk, cyl, average block). As far as I 
know (and as others have said) nothing will show you the original _number_ of 
those units requested for the primary allocation, which seems to be the OP's 
desire.

Even ISPF does not claim to show you the _primary_ allocation. It shows, as 
mentioned by the OP earlier, the value of the "1st extent". The primary 
allocation is made up of a first extent and up to 4 other extents. ISPF just 
shows the size of the first extent, which in many cases will be some value less 
than or equal to the requested primary space. (But if adjacent extents have 
been collapsed together it could, I suppose, be a value greater than the 
requested primary space.)

-- 
Walt

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