PCI Error Handling and Error Recovery Marketing White Paper

drivers have suspended all activities for the devices in the error path. On Integrity platform system,

during this phase the Health Checker Daemon is invoked to log and clear the errors.

Release Phase

: During this phase, the suspended I/O path is restored. It involves resuming the driver.

If any I/O cards were left in a suspended state, the card will be replaced via a PCI OLR action.

For more information about PCI OLR, see Interface Card OL* Support Guide, posted at the following

location:

http://docs.hp.com/en/5992-1908/index.html

The following diagram depicts various phases of core PSM.

Figure 4: PCI Error Recovery Phases

Diagnostics decodes the error logs and saves the error information in /var/opt/resmon/log/event.log

file.

Note: Only the PCI bus parity errors are handled by the error recovery feature. Device errors are not

handled by this feature.

To summarize, when an error occurs on a PCI bus containing an I/O card, events occur in the

following order:

• The I/O drivers are suspended

• The PCI bus is isolated from further I/O

• The error is logged and cleared

• The bus is reset

• The I/O drivers are resumed