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

Scenario 25
System Configuration:
HP-UX OS is running and an interface card in one of the PCI I/O slots is in PCI
ERROR state. That is, ioscan(1M) displays the nodes below the slot in ERROR state.
Operation Performed:
# kcmodule <interface driver associated with card>=unused
Criticality reported by CRA:
Driver Unload failure
Explanation and user action required:
Under normal situations, when an I/O slot occupied with a card encounters any PCI errors, the
automatic PCI error recovery feature of HP-UX 11iv3 will clear the PCI error and make the slot and
card functional again.
However, under certain conditions (for example, the card is faulty), the automatic PCI error recovery
may fail to clear the error and in which case, the slot will be left in ERROR state to prevent any system
crash leading to system downtime.
In such a scenario, the user can perform olrad(1M) SUSPEND or DELETE operation with –r or –d
options, respectively, to clear the PCI error manually and then perform the driver unload operation
again.
Scenario 26
System Configuration:
HP-UX OS is running and a card is in olrad (1M) suspended state. That is,
ioscan(1M) displays the nodes below the slot in SUSPENDED state.
Operation Performed:
# olrad -d <slot id>
Criticality reported by CRA:
CRA_WARNING
Explanation and user action required:
In such a scenario, the above olrad (1M) DELETE operation will complete with a WARNING and no
user action is required.
Scenario 27
System Configuration:
HP-UX OS is running and a card is in olrad (1M) suspended state. That is,
ioscan(1M) displays the nodes below the slot in SUSPENDED state.
Operation Performed:
# kcmodule <interface driver associated with card>=unused
Criticality reported by CRA:
Driver Unload failure
Explanation and user action required:
In such a scenario, the recommended procedure is to perform the olrad(1M) RESUME or DELETE
operation with –r or –d, respectively, and then perform the intended kcmodule driver unload
operation.
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