z/VM: CP Planning and Administration - z/VM - IBM

v In Chapter 6, “The System Configuration File,” on page 51, three newstatements, DEFINE VSWITCH, MODIFY VSWITCH, and MODIFY LAN, wereadded to the System Configuration File Statements. Also, the VMLAN statementwas updated.v In Chapter 8, “Setting Up Service Virtual Machines,” on page 295, columns35–42 and 43–50, under Accounting Records Network Data Transmissions(Record Type C), were updated.v In Chapter 17, “Creating and Updating a User Directory,” on page 447, the IUCVDirectory Control Statement and the SPECIAL Directory Control Statement wereupdated. A new statement, NICDEF Directory Control Statement, was added.Hardware Configuration Definition (HCD)Hardware Configuration Definition (HCD), along with Hardware ConfigurationManager (HCM), are components of z/VM that work together to create and manageyour z/VM I/O configuration. Updates in this book include:v Additional material in Chapter 1, “Planning and Administration Overview,” onpage 3, Chapter 2, “Configuring Your System,” on page 23, and Chapter 5,“Defining I/O Devices,” on page 45 to reflect the new HCD support. While theoriginal command-based dynamic I/O configuration capabilities of z/VM are stillvalid, the use of HCM and HCD is incompatible with those commands. Youshould choose one method or the other and stay with it for the duration of anygiven IPL of your z/VM system.v A new system configuration file statement, IODF, which indicates that HCD willbe used to control the I/O hardware and/or software configuration. See “IODFStatement” on page 158.v In Chapter 4, “Using the Stand-Alone Program Loader,” on page 37, a new IPLoption, NOHCD, which specificies that CP should ignore any IODF statements inthe system configuration file.For more information on HCD and HCM, see z/VM: I/O Configuration.CP Command Response SuppressionThe SILENT operand has been added to the DEFINE COMMAND / CMD andMODIFY COMMAND / CMD system configuration statements to enable responsesuppression for the CP command being defined or redefined.Guest IPL from SCSI DisksThe directory control statement, LOADDEV, was added to Chapter 17, “Creatingand Updating a User Directory,” on page 447. LOADDEV is used to identify thelocation of a program to be loaded as a result of an FCP–attached SCSI disk (Linuxand other guest operating systems) IPL.Miscellaneousv Information about using the CP Access Control Interface has been moved to thez/VM: Service Guide.v A new parameter (FCTC) was added to the SPECIAL directory control statement.This supports Virtual FICON CTCA.Summary of Changes xxi