IBM Directory Maintenance for z/VM (DirMaint™)

Updated: 2024-09-20
| 09-20-2024: updated to add information on DirMaint FL740
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DirMaint Overview
IBM Directory Maintenance (DirMaint) for z/VM is a CMS application that helps manage an installation's VM directory. Directory statements can be added, deleted, or altered using the DirMaint directory statement-like commands. DirMaint provides automated validation and extent allocation routines to reduce the chance of operator error. [ More ]

With z/VM V7, DirMaint is a priced, optional feature and is automatically shipped on the z/VM V7 base product media: See the announcement letter for further details, z/VM 7.4.

The priced, optional feature of the IBM Directory Maintenance Facility (DirMaint) has released a new function level (FL740) in z/VM V7.4. DirMaint FL740 includes all service applied since FL730 plus support is added for the z/VM upgrade installation procedure exit (UPGDVHXT EXEC). This exit provides the interface between the z/VM upgrade installation procedure and DirMaint so that DirMaint can be used for all of the directory updates associated with the upgrade installation. In order for this exit to work successfully, some DirMaint configuration is necessary. If you plan to use the z/VM upgrade installation procedure with DirMaint, please see Appendix C. Preparing for the z/VM Upgrade Installation Procedure here.

The Directory Maintance Facility (DirMaint), function level 740, contains the following changes/enhancements:

The CPU operand no longer accepts the CRYPTO keyword.

The CRYPTO operand no longer accepts the CSU, KEYENTRY, MODIFY, and SPECIAL keywords.

The code in DirMaint has been updated to use the CMS WAKEUP MODULE. While the DVHWAKE MODULE is still shipped with DirMaint, any customized user exits should be updated to use the CMS WAKEUP MODULE.

NOTE: The support added by the following z/VM Continuous Delivery New Function APARs for DirMaint are available in the base support for DirMaint FL740.

z/VM Continuous Delivery New Function APARs for DirMaint FL730

APAR VM66424 - Guest Secure IPL;

z/VM 7.4.0 supports guest secure IPL (load and dump) for both ECKD and SCSI devices. A z/VM user can request that the machine loader validate the signed IPL code by using the security keys that were previously loaded by the customer into the HMC certificate store. The validation ensures that the IPL code is intact, unaltered, and originates from a trusted build time source.

The following DirMaint operands were updated for this support:
LOADDEV
IPL
SETOPTN


General Information

Documentation

Obtaining service

Online Support for z/VM where you can:

DirMaint service can be ordered on-line at IBM Shopz "Ordering Service" with ordering information tips available here.

Instructions for testing service.

End of Service dates

Hints and Tips

Note: *
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