Sun Microsystems Sun Fire V480, Руководство администратора

Страница: 118 / 270

90 Sun Fire V480 Server Administration Guide • February 2002
1 – POST messages cannot be displayed on a graphics terminal. They are sent to
ttya
even when
output-device
is set to
screen
.
Note –
These variables affect OpenBoot Diagnostics tests as well as POST
diagnostics.
Stage Two: OpenBoot Diagnostics Tests
Once POST diagnostics have finished running, POST reports back to the OpenBoot
firmware the status of each test it has run. Control then reverts back to the OpenBoot
firmware code.
OpenBoot firmware code compiles a hierarchical “census” of all devices in the
system. This census is called a
device tree . Though different for every system
configuration, the device tree generally includes both built-in system components
and optional PCI bus devices.
post-trigger
obdiag-trigger
Specifies the class of reset event that causes power-on self-tests (or OpenBoot
Diagnostics tests) to run. These variables can accept single keywords as well as
combinations of the first three keywords separated by spaces. For details, see “How to
View and Set OpenBoot Configuration Variables” on page 184.
•
error-reset
—A reset caused by certain non-recoverable hardware error
conditions. In general, an error reset occurs when a hardware problem corrupts system
state data and the machine becomes “confused.” Examples include CPU and system
watchdog resets, fatal errors, and certain CPU reset events (default).
•
power-on-reset
—A reset caused by pressing the Power button (default).
•
user-reset
—A reset initiated by the user or the operating system. Examples of
user resets include the OpenBoot
boot
and
reset-all
commands, as well as the
Solaris
reboot
command.
•
all-resets
—Any kind of system reset.
•
none
—No power-on self-tests (or OpenBoot Diagnostics tests) run.
input-device
Selects where console input is taken from. Default is
keyboard
.
•
ttya
—From built-in serial port.
•
keyboard
—From attached keyboard that is part of a graphics terminal.
•
rsc-console
—From RSC.
output-device
Selects where diagnostic and other console output is displayed. Default is
screen
.
•
ttya
—To built-in serial port.
•
screen
—To attached screen that is part of a graphics terminal.
1
•
rsc-console
—To RSC.
TABLE 6-2
OpenBoot Configuration Variables (Continued)
OpenBoot Configuration
Variable
Description and Keywords