About Service Mode - Sun Microsystems Sun Fire V445 Server Administration Manual

OpenBoot Configuration Variables That Control Diagnostic Testing and Automatic System
TABLE 8-7
Restoration (Continued)
OpenBoot Configuration
Variable
service-mode?
test-args
verbosity

About Service Mode

Service mode is an operational mode defined by Sun that facilitates fault isolation
and recovery of systems that appear to be nonfunctional. When initiated, service
mode overrides the settings of key OpenBoot configuration variables.
Note that service mode does not change your stored settings. After initialization (at
the ok prompt), all OpenBoot PROM configuration variables revert to the user-
defined settings. In this way, you or your service provider can quickly invoke a
known and maximum level of diagnostics and still preserve your normal mode
settings.
162 Sun Fire V445 Server Administration Guide • September 2007
Description and Keywords
Controls whether the system is in service mode. Default is false.
–
• true Service mode. Diagnostics are executed at Sun-specified levels,
overriding but preserving user settings.
–
• false Normal mode. Diagnostics execution depends entirely on the settings
of diag-switch? and other user-defined OpenBoot configuration variables.
Customizes OpenBoot Diagnostics tests. Allows a text string of reserved
keywords (separated by commas) to be specified in the following ways:
• As an argument to the test command at the ok prompt.
• As an OpenBoot variable to the setenv command at the ok or obdiag prompt.
Note: The variable test-args applies only to systems with firmware that
contains OpenBoot Diagnostics. See your system documentation for a list of
keywords.
Controls the amount and detail of OpenBoot, POST, and OpenBoot Diagnostics
output.
Default is normal.
–
• none Only error and fatal messages are displayed on the system console.
Banner is not displayed.
Note: Problems in systems with verbosity set to none might be deemed not
diagnosable, rendering the system unserviceable by Sun.
–
• min Notice, error, warning, and fatal messages are displayed on the system
console. Transitional states and banner are also displayed.
–
• normal Summary progress and operational messages are displayed on the
system console in addition to the messages displayed by the min setting. The
work-in-progress indicator shows the status and progress of the boot sequence.
–
• max Detailed progress and operational messages are displayed on the system
console in addition to the messages displayed by the min and normal settings.