The PCI Error Handling feature allows an HP-UX system to avoid
a Machine Check Abort (MCA) or a High Priority Machine Check (HPMC)
if a PCI error occurs (for example, a parity error).
Without the PCI Error Handling feature installed, PCI slots
are set in hardfail mode. If a PCI error occurs when a slot is in
hardfail mode, an MCA or HPMC will occur; then the system will crash.
When the PCI Error Handling feature is installed, the PCI
slots containing I/O cards that support PCI Error Handling will
be set in softfail mode. If a PCI error occurs when a slot is in
softfail mode, the slot will be isolated from further I/O, the corresponding device
driver will report the error, and the driver will be suspended.
The olrad command and the Attention Button can be used to recover,
restoring the slot, card, and driver to a usable state.
The PCI Error Handling feature is only supported on certain
I/O card drivers and a limited number of systems. A firmware update
may be required. For more information about supported drivers and
systems, as well as firmware requirements, see the PCI Error
Handling Product Note (HP Manufacturing Part Number
5991-4793), available at http://docs.hp.com in the “High Availability” section.
Impact |
 |
This feature allows your systems to continue running even
when a PCI error occurs.
Compatibility |
|
This feature is optional. You must be aware that with this
feature, a PCI error will no longer cause the system to fail. There
may be instances when a system failure is desirable in order to
force a failover to another system.
Performance |
|
This feature has no measurable performance impact.
Documentation |
|
For further information, refer to the following documentation,
available at http://docs.hp.com in the “High Availability” section:
PCI
Error Handling Product Note (Manufacturing Part Number
5991-4793)
Obsolescence |
|
Not applicable.
Printable version
