Data set verification (Eioption 21)

This exit lets the UIM end data set copy, physical data set copy, dump, and restore processing for individual data sets. This exit is given control through the UIM at the start of data set copy, dump, and restore processing for each data set. DFSMSdss provides the UIM with the data set name through the EIREC21 structure within the exit identification block, ADREID0. EIREC21 is shown in Table 1. The name provided is the original data set name prior to rename processing, if any, for copy and restore functions. The UIM returns to DFSMSdss with a return code in the exit identification block. The valid return codes are:

0: Continue normal processing
20: Disconnect exit
32: End function
36: End data set
DFSMSdss continues processing with the next data set, if any. If the user specifies the SPHERE keyword and processing for a base cluster is ended through this exit, processing for all AIXs related to the base cluster is also ended. If the user specifies the SPHERE keyword and the UIM attempts to end processing for an AIX® that is related to a base cluster that was selected for processing, DFSMSdss invokes the UIM again. If the UIM attempts to end processing for the AIX again, DFSMSdss issues warning message ADR770W and ignores the request. If the user does not specify the SPHERE keyword, AIXs can be ended even if they are related to base clusters selected for processing. Ending a base cluster without the SPHERE keyword does not cause any related AIXs to be ended.

Note: See the "Note for Eioptions 21, 22, and 23" at the end of the description for eioption 23.