42 Netra 440 Server System Administration Guide • August 2004
An auto-configuring capability designed into the OpenBoot firmware enables the
system to unconfigure failed components and to restore system operation. As long
as the system is capable of operating without the failed component, the ASR features
enable the system to reboot automatically, without operator intervention.
Note – ASR is not activated until you enable it. See “Enabling and Disabling
Automatic System Recovery” on page 44.
For more information about ASR, refer to the Netra 440 Server Diagnostics and
Troubleshooting Guide (817-3886-xx).
Auto-Boot Options
The OpenBoot firmware stores a configuration variable on the system configuration
card (SCC) called auto-boot?, which controls whether the firmware will
automatically boot the operating system after each reset. The default setting for Sun
platforms is true.
Normally, if a system fails power-on diagnostics, auto-boot? is ignored and the
system does not boot unless an operator boots the system manually. A manual boot
is obviously not acceptable for booting a system in a degraded state. Therefore, the
Netra 440 server OpenBoot firmware provides a second setting,
auto-boot-on-error?. This setting controls whether the system will attempt a
degraded boot when a subsystem failure is detected. Both the auto-boot? and
auto-boot-on-error? switches must be set to true to enable an automatic
degraded boot. To set the switches, type:
Note – The default setting for auto-boot-on-error? is false. Therefore, the
system will not attempt a degraded boot unless you change this setting to true. In
addition, the system will not attempt a degraded boot in response to any fatal
nonrecoverable error, even if degraded booting is enabled. For examples of fatal
nonrecoverable errors, see “Error Handling Summary” on page 43.
ok setenv auto-boot? true
ok setenv auto-boot-on-error? true