Doesn’t physical scan of VTOC/VVDS areas on DASD (or for that matter directly issuing CCW’s to any DASD for any reason) also require at least SAF authorization (if not also APF authorization) to allow access under z/OS?
Peter From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Matthew Stitt Sent: Friday, June 14, 2024 1:00 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Getting dasd info Take a look at file 527 on the CBT tape. Program(s) DADSM and LISTICAT. Both programs do a scan of the disk volumes and generate reports on VTOC, VVDS, etc. Matthew On Fri, 14 Jun 2024 12:08:54 -0400, Mike Shaw <techsupp...@quickref.com> wrote: >Tony, > >You can run in problem program state and key and issue a UCBSCAN macro to >get a list of UCBs and UCB copies for that z/OS system. You can then run >that returned list and choose only the online DASD UCBs. For each of those >that you are interested in, issue an LSPACE SVC specifying the UCB address. >That will get you a good picture of free space info for that volume, and >it's quick. > >To go deeper and get a list of all data sets on the volume and/or a volume >map, you have to read the VTOC and process it. You can do that without >being APF authorized also, if the volume is allocated to your job step. > >The CVAFTST macro will tell you whether or not a particular DASD volume has >an indexed VTOC or not. > >Mike Shaw >MVS/QuickRef Support Group >Chicago-Soft, Ltd. > > >On Fri, Jun 14, 2024 at 11:20 AM Tony Thigpen <t...@vse2pdf.com> wrote: > >> All, >> >> I have a z/VSE program that I want to start using with z/OS. The program >> issues several CCWs to the DS8000, such as SNS, SSS, RCD, & PSSF that >> are either volume specific or subsystem specific. Not file specific. >> >> My first question is in the area of getting access to a specific volume >> on z/OS. >> >> In z/VSE, I just do an ASSGN to the disk and issues the EXCPs. >> >> On z/OS, I expect I need to perform an OPEN against the volume using >> something like: >> //SOURCE DD UNIT=3390,VOL=SER=AVOLID,DISP=OLD >> >> Any pointers would be appreciated. >> >> My second question relates to 'authority'. >> >> On z/VSE, I have to tell the operating system that I am actually 'DSF' >> before it will allow me to issue these CCWs. >> >> Do I have to do something special on z/OS? >> >> >> Thanks, >> >> Tony Thigpen -- This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
