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- Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
- Path: sparky!uunet!europa.asd.contel.com!paladin.american.edu!auvm!VM.MARIST.EDU!HARRY
- Organization: Marist College
- Message-ID: <VM-UTIL%92091120564372@VM.MARIST.EDU>
- Newsgroups: bit.listserv.vm-util
- Date: Fri, 11 Sep 1992 20:49:45 EDT
- Sender: VM Utilities Discussion List <VM-UTIL@OHSTVMA.BITNET>
- From: "A. Harry Williams" <HARRY@VM.MARIST.EDU>
- Subject: Re: ind$file running on cms reading os files
- In-Reply-To: Message of Fri,
- 11 Sep 1992 16:42:49 EDT from <TKSSTEVE@UBVM.CC.BUFFALO.EDU>
- Lines: 32
-
- On Fri, 11 Sep 1992 16:42:49 EDT Steven P. Roder said:
- >On Fri, 11 Sep 1992 15:36:00 EDT John F. Chandler said:
- >>> >We have a user that is link to an MVS disk from cms.
- >>...
- >>> If the MVS catalogs are ICF catalogs, then you cannot do it, since CMS does
- >>> not support reading ICF catalogs. CMS does support VSAM catalogs.
- >>
- >>What do catalogs have to do with it? CMS has a link to a virtual disk
- >>which happens to be in MVS format, so it presumably goes in and reads
- >>the VTOC. My guess is that the best bet for reading a file from an OS
- >>disk is to establish a CMS fileid by issuing a FILEDEF of the form
- >>
- >> FILEDEF ddname DISK name type mode DSN data.set.name
- >>
- >>and then referring to 'name type'. Unfortunately, this might work only
- >>if the program uses OS-simulated I/O for reading the file.
- >> John
- Melvin Klassen point out to me privately that IND$FILE does use OS-simulated
- I/O(as far as he could tell for an OCO module), and so this might not work
-
- >
- >This is what I could not get to function when the MVS catalog on the linked
- >volume is an ICF catalog, rather than a VSAM catalog.
-
- I went and tried this on our system. We are running with ICF catalogs
- on MVS/ESA. As long as I have access to the proper volume, I can use the
- MVS VTOC, and access the file. I got it to work here. I can't use
- the catalog, so I must use the proper volid.
- >
- >
- >Steve Roder
- /ahw
-