PCI Error Recovery Product Note, 3rd Edition, March 2008

PCI Error Recovery Product Note

Tunable Kernel Parameters

Chapter

# ioscan -P error_recovery -d lba

This implies that PCI error recovery is supported for I/O adapters located under LBAs like 0/0/0, 0/0/1.

Tunable Kernel Parameters

There are two PCI Error Recovery tunables that you can configure:

• pci_eh_enable

This tunable is used to enable or disable the PCI Error Recovery feature. On HP-UX 11i v3, PCI Error

Recovery is enabled by default.

pci_eh_enable is not a dynamic tunable. A reboot will be required for changes to take effect.

Refer to the pci_eh_enable(5) manpage for further details on this kernel tunable parameter.

• pci_error_tolerance_time

This tunable determines whether an automatic PCI error recovery will occur on an I/O slot based on the

time interval between two PCI errors. If two PCI errors occur on a PCI slot within the time interval

specified by the pci_error_tolerance_time tunable, the card in the I/O slot will be suspended and a

manual PCI error recovery operation is required to restore the card.

For further details on this kernel tunable parameter, see the pci_error_tolerance_time(5).

Table 1 Error Recovery Attributes

Class I H/W Path Error_Recovery

ba 0 0/0/0 Supported

1 0/0/1 Supported

ba 10 0/0/8 Supported

ba 11 0/0/9 Supported

13 0/0/10 Supported

ba 14

0/0/12 Supported