> What about the other side? Will GETMAIN return indication of success > only if the requested page slots can be committed?
There is no consideration of aux slot availability when virtual storage is being allocated. There used to be some capability to reserve aux slots when an address space was created: http://bitsavers.trailing-edge.com/pdf/ibm/370/MVS_XA/GC28-1143-2_MVS-XA_Conversion_Notebook_May84.pdf Using the ASM Backing Slot Function In Release 1.2, the constants that control the number of slots ASM reserves as back up for each new address space or VIO data set are changed to prevent ASM from reserving any. The changes were made because most installations provide adequate paging space and prefer not to use the backing slot function to limit address space and VIO data set creation. If your installation wants ASM to reserve backing slots, you need to change the constants. In Release 1.2, the constants are in the ASMSLOTC and ASMSLOTV fields in the ASJ\1VT. ASM uses the ASMSLOTC value when calculating the number of slots to reserve for address spaces. It uses the ASMSLOTV value when calculating the number for VIO data sets. Earlier releases keep the same values in the nucleus CSECTs ILRSLOTC and ILRSLOTV. Initialization and Tuning describes how ASM uses ASMSLOTC and ASMSLOTV and how to change them. Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp. Poughkeepsie NY ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
