Information Passed to the Exit

The following information is passed to the exit each time it is invoked:

• The type of automated tape library from which the action is requested.
• The action to be performed. The following basic commands may be requested:
  • Mark a tape as SCRATCH
  • Mark a tape as ACTIVE
  • EJECT a tape
  • QUERY tape information
• The location of a record containing additional information (for example, volser of the relevant volume, from and to locations in case of an eject command used to move a volume).

Note: If the current invocation of the exit is to confirm whether a request should be retried, the last return code and reason code of the failed command from the automated tape library and the retry count for the request are also passed to Exit 8. If more than one type of automated tape library is used at your site, Exit 8 is invoked separately for each type before the automated tape library is accessed. For more information, see "Sites With More Than One Type of Automated Tape Library" in Sample Uses For Exit 8.

For more information about Exit 8, see the CTTX008 member in the IOA SAMPEXIT library.