On Sat, 23 Dec 2023 08:46:41 -0600, Lionel B. Dyck wrote: >IBM does provide a z/OS Data Set File System Administration and a z/OS Data >Set File System Messages and Codes. There is no Users Guide because there is >no real need once one understands how it works. > ??? That is true of any product: "there is no real need once one understands how it works." Yet, for many products IBM kindly provides User's Guides to assist users who don't understand a priori how they work.
>DSDS, in a nutshell, is a root mount point from which the OMVS shell users >access z/OS datasets as if they were just another file. There a nuances for >text, record format, binary, and spool files that the users need to understand. > Reading the Admin manual, which should *not* be taken as a Guide for end users, I infer many restrictions for "just another file. " For example: o Case insensitivity. o In an ordinary UNIX directory I can have program objects, REXX execs, and \ (perhaps, I guess) suudirectories. Does this work with DSFS? o Two jobs running concurrently can open the same UNIX file with O_APPEND and intermittently add log records to it. Kerne causes them to appear in chronological order. A third job could use "tail -f" to follow the progress. How does this work with a DSFS file? Are there entanglements with ENQ and BLKSIZE? >-----Original Message----- >From: Paul Gilmartin >Sent: Friday, December 22, 2023 7:32 PM > >>I’ve experimented with it and found it has great potential. I also >>wrote this >>https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/lionel >>-dyck2/2023/10/20/data-set-file-system-aka-dsfs-simplified-administr >> >Which begins: > BM introduced the Data Set File System (DSFS) with z/OS 2.5 as an option > for > shell users of z/OS to easily access z/OS datasets using traditional shell > services. > >Where's the User's Guide? If, as I believe, interaction of traditional shell >services with DSFS differs significantly from interaction with z/FS, the >difference should be documented in a User's Guide. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
