HP-UX 11i Version 2 May 2005 Release Notes

General System Administration
Upper Layer Module (ULM) Services (Deprecated)
Chapter 5
134
Obsolescence
Not applicable.
Upper Layer Module (ULM) Services (Deprecated)
Upper Layer Module (ULM) Services is a set of kernel interfaces that allow upper layer
modules to intercept IO requests to IO devices.
Summary of Change
ULM Services has been deprecated. It will be obsolete starting with HP-UX 11i v3.
Impact
Starting from HP-UX 11i v3, /usr/include/sys/ulm.h will not be delivered. The
following exported kernel interfaces will not be present:
• ulm_register
• ulm_unregister
Compatibility
ULM is only used by the HP StorageWorks Auto Path product. Auto Path will not be
supported on HP-UX 11i v3, so no compatibility problems will be seen.
Performance
There is no effect of performance.
Documentation
The HP StorageWorks Auto Path documentation contains information about ULM
Services. See the links for the HP StorageWorks Auto Path documentation provided at
the HP StorageWorks site at http://hp.com/go/storage.
For further information on application availability, see the Application Availability
Matrix at http://hp.com/go/softwareinfo/MATRIX.
Obsolescence
ULM Services will be obsoleted in HP-UX 11i v3.