[Also posted to the Linked-In "Mainframe Assembler Professionals" group at http://linkd.in/1VjEST7 ] I wrote a program to create a report of DASD usage by scanning the UCB Table, then reading all the DSCBs from all the DASD Volumes for usage data and summing by DSN. The output is essentially the same as a TSO LMDINIT/LMDLIST sequence on each VOLSER, but runs a *lot* faster and is *much* easier to manage. One of the items I calculate is %USED based on DS1LSTAR as a percentage of the sum of all the extent values from all the extents on all the allocated volumes. And for everything but PDSE, my results are the same as LMDLIST, which I understand, since PDSEs don't use DS1LSTAR. Looking around the web, I see others coming up against this problem for at least the last 10 years, but none have any proposed low-level coding solution. There obviously *is* one, since facilities like ISPF 3.4 and FDREPORT do it.
My best idea so far (which so far also isn't working) is to call LISTDSI... http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ikj4a3a0/4.4.2 ... using the IRXEXEC API: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/H1981605/APPENDIX1.F.1.2 which the manuals suggest has some usage data for PDSEs I can then use to do the calculation. ►z/OS 2.1 and up even returns SYSUSEDPERCENT: http://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.ikja300/ldsi.htm Any better suggestions?? http://www.fdr.com/pdf/itsf.pdf - Innovation Data Processing has been doing it since at least 1992! David Staudacher co-mgr Mainframe Assembler Professionals group ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
