The OP was asking about scanning the entire volume, not just the VTOC. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Mike Shaw <techsupp...@quickref.com> Sent: Friday, June 14, 2024 1:35 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Getting dasd info No. With the right combination of DYNALLOC, OPEN and RDJFCB you can open the VTOC and execute a channel program that reads the entire VTOC without any kind of SAF authorization. It can also be read with BSAM but that is a little slower. Mike Shaw MVS/QuickRef Support Group Chicago-Soft, Ltd On Fri, Jun 14, 2024, 1:17 PM Farley, Peter < 0000031df298a9da-dmarc-requ...@listserv.ua.edu> wrote: > 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 > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
