Interface Card Critical Resource Analysis(CRA) Whitepaper for HP-UX 11i v3

However, running the above kconfig –H command will discard all the kernel configuration
changes, not only the kernel configuration change caused by the above kcmodule driver
unload operation, but also any other changes held for next boot of the system.
• Load the interface card driver, that has been marked as unused, back into the kernel
configuration, by running:
# kcmodule <interface driver associated with card>=loaded
Swap and Crash Dump Device Configuration Scenarios
Scenario 5
System Configuration:
HP-UX OS running with swap device configured either on a logical volume
(could be either LVM or VxVM volume) or on a physical disk (PV) with a single lunpath through an
HBA.
Operation Performed:
# olrad –C | -r | -d <slot id>
Criticality reported by CRA:
CRA_SYSTEM_CRITICAL
Explanation and user action required:
The olrad(1M) command with –C option reports the resource usage and its criticality.
The olrad(1M) with –r or –d options (if it were to be allowed) will render the swap device unavailable
and this will result in system crash, hang, performance issues, or any other indeterminate state.
Because of the above reasons, the requested olrad operations will not be allowed by CRA to proceed
and the operation will fail with CRA_SYSTEM_CRITICAL error.
If any of these operations must be performed for system administration purposes, the user must ensure
that the swap device is reachable through an alternative healthy card before performing the above
operations.
If the swap device has been configured using a path dependent device special file, it will not be
possible to provide any alternative path to it without loss of swap functionality and hence the
requested olrad operation is not recommended to be performed.
Scenario 6
System Configuration:
HP-UX OS running with swap device configured on a File System mount point
and this file system is configured either on a logical volume (could be either LVM or VxVM volume) or
on a physical disk (PV) with a single lunpath through an HBA.
Operation Performed:
# olrad –C | -r | -d <slot id>
Criticality reported by CRA:
CRA_SYSTEM_CRITICAL
Explanation and user action required:
8