pci_eh_enable.5 (2010 09)

p
pci_eh_enable(5) pci_eh_enable(5)
(Kernel Tunable for PCI Error Recovery)
NAME
pci_eh_enable - enables/disables PCI Error Recovery
VALUES
Failsafe
1
Default
1 (Enables PCI Error Recovery.)
Allowed values
Integer values from
0 to 1.
Recommended values
1 (Enables PCI Error Recovery.)
DESCRIPTION
HP-UX supports PCI Error Handling/Recovery to ensure that PCI errors caused by bad cards do not
crash a hard partition on high end systems. This functionality helps in recovering the most common par-
ity errors. This tunable is made static because it is very hard to modify hardware capability at run time.
pci_eh_enable is made public so certain service guard users would be able to turn off the functional-
ity.
Who Is Expected to Change This Tunable?
Recommended for service guard customers.
Restrictions on Changing
Changes to this tunable take effect at next reboot.
When Should the Tunable Be Turned On?
This tunable should be turned on to enable PCI Error Recovery functionality
When Should the Tunable Be Turned Off?
To disable PCI Error Recovery functionality
What Are the Side Effects of Turning the Tunable Off?
PCI Error Recovery functionality will be disabled
WARNINGS
Even if tunable is
ON, PCI Error Handling/Recovery functionality will be disabled if the platform does not
have the capability.
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its
meaning changed in future releases of HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parame-
ter values. After installation, some tunable parameters may no longer be at the default or recommended
values. For information about the effects of installation on tunable values, consult the documentation for
the kernel software being installed. For information about optional kernel software that was factory
installed on your system, see HP-UX Release Notes at
http://www.hp.com/go/hpux-core-docs
.
AUTHOR
pci_eh_enable was developed by HP.
SEE ALSO
kctune(1M).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1