PCIe-based coupling links
are supported:The IPCS XESDATA FACILITY report formats information
about coupling facilities connected to the dumped system and CFs that
are peer-connected to those facilities. The report identifies the
connecting CHPIDs and CHPID types. In z/OS V2R1, the console display output for D CF and the IPCS XESDATA FACILITY report began displaying the enhanced path attributes (path operating mode, degraded condition, round-trip latency, adapter ID, port, and SAP affinity). With this support, the display command and IPCS report will now display the same information for the CS5 CHPID type. For more information, see z/OS MVS Diagnosis: Reference
When change was introduced: z/OS V2R1.
- Coupling facility (CF) error recovery processing and the way structures
are processed when CF duplexing is initiated is changed. The new design
is intended to improve performance and availability when a large number
of structures are rebuilt by rebuilding in a more serial manner, and
by enabling you to specify which structures should be recovered first,
to rebuild the most important structures for your workloads ahead
of other, less critical, structures.
When change was introduced: z/OS V2R1.
- Connector local cache controls verification is implicitly performed
by the system when registration of interest in a cache structure data
item is requested. In the event of a verification failure, the system
collects diagnostic information and invokes connector termination
processing to avoid coupling facility cache corruption.
When change was introduced: z/OS support exists for exploiting new CFCC function for coupling facility (CF) structures residing in CFs defined on a IBM® zEnterprise® EC12 (zEC12) processor at CFLEVEL 18 and above and select levels of CFs defined on IBM zEnterprise 114 (z114) and IBM zEnterprise 196 (z196) processors. The z/OS support is available in z/OS V2R1 and in z/OS V1R12 and z/OS V1R13 with the PTFs for APAR OA37550.
- The XCF Note Pad Service is a new application programming interface
that allows programs to manipulate notes in an XCF note pad. A note
pad is an abstraction layered on top of the existing coupling facility
list structure interfaces.
When change was introduced: z/OS V2R1 and with the PTF for APAR OA38450 for z/OS V1R13.