On a CPVOL, what is stored in the VTOC address field +x'0B'?
The question started on VSE-L due to a "what's on this volume" question.
The ownerid is CP370. The VTOC address field is there but is past the
end of the volume.
DITTO/ESA for VSE DVT - Display VTOC
Unit 0400 VOLSER DOSRES 3390 with 3339 cyls, 15 trks/cyl, 58786 bytes/trk
// EXEC LVTOC
1S54I PHASE LVTOC IS TO BE FETCHED FROM IJSYSRS.SYSLIB
LABEL IDENT - VOL1 VTOC START IS CYLINDER - 3389
SERIAL NUMBER- STC25A OWNER IDENT - CP370
Tony Thigpen
-----Original Message -----
From: Alan Altmark
Sent: 01/26/2009 12:50 AM
On Saturday, 01/24/2009 at 08:10 EST, Tony Thigpen <t...@vse2pdf.com>
wrote:
Anybody know where in the VM manuals the layout of the VOL1 label is
documented?
If you want a modern VOL1, see
- DFSMS: Using Datasets for the VOL1
- DFSMSafp Advanced Services for the VTOC and DSCBs
If you actually want a CPVOL, it has a form that predates the modern
standard and is not found in any z/OS or z/VM book. In the standard in
use at the time CPVOLs were invented, VOL1(+16) was 25 spaces followed by
a 10-character OWNER ID starting at VOL1(+41), which is where the "CPVOL"
designation is stored. This is what you find in the FMLRC macro.
Alan Altmark
z/VM Development
IBM Endicott
