There are utilities (e.g. DSAT) on the CBT tape that do this, but you will need 
RACF authority to open/read each PDS directory.

Regards,
John K

>dsat 'almsa.anscopy' pds sec                                         
SERIAL   ALLOC    FREE EXT   SEC UNITS DSORG DIRA    DIRU    ENTR  AL 
RLIB90      15       9   1     1  CYL   PO     10       5      30    0

-----IBM Mainframe Discussion List <[email protected]> wrote: -----
To: [email protected]
From: Gabor Hoffer 
Sent by: IBM Mainframe Discussion List 
Date: 04/23/2014 07:58AM
Subject: Inquire SPACE/DIR allocation attributes

Hi,

How can I get allocation attribs for an existing dataset? PRI/SEC Space,
space unit (CYL,TRKS,etc), DIR (in case of PDS)
Where are these informations stored? Do you have any example ASM code for
it?

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