Controlling How POST Runs - Sun Netra T5440 Server

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1.5.1 Controlling How POST Runs

The server can be configured for normal, extensive, or no POST execution. You can also control the level of tests that run, the amount of POST output that is displayed, and which reset events trigger POST by using ALOM CMT CLI variables.

ALOM CMT CLI Parameters Used for POST Configuration lists the ALOM CMT CLI variables used to configure POST. Flowchart of ALOM CMT CLI Variables for POST Configuration shows how the variables work together.

Note - Use the ALOM CMT CLI setsc command to set all the parameters in ALOM CMT CLI Parameters Used for POST Configuration except setkeyswitch.

Table 1-7 ALOM CMT CLI Parameters Used for POST Configuration

Parameter	Values	Description
setkeyswitch	`normal`	The system can power on and run POST (based on the other parameter settings). For details see Flowchart of ALOM CMT CLI Variables for POST Configuration. This parameter overrides all other commands.
	`diag`	The system runs POST based on predetermined settings.
	`stby`	The system cannot power on.
	`locked`	The system can power on and run POST, but no flash updates can be made.
diag_mode	`off`	POST does not run.
	`normal`	Runs POST according to `diag_level` value.
	`service`	Runs POST with preset values for `diag_level` and `diag_verbosity`.
diag_level	`max`	If `diag_mode` = `normal`, runs all the minimum tests plus extensive CPU and memory tests.
	`min`	If `diag_mode` = `normal`, runs minimum set of tests.
diag_trigger	`none`	Does not run POST on reset.
	`user_reset`	Runs POST upon user-initiated resets.
	`power_on_reset`	Only runs POST for the first power on. This option is the default.
	`error_reset`	Runs POST if fatal errors are detected.
	`all_resets`	Runs POST after any reset.
diag_verbosity	`none`	No POST output is displayed.
	`min`	POST output displays functional tests with a banner and pinwheel.
	`normal`	POST output displays all test and informational messages.
	`max`	POST displays all test, informational, and some debugging messages.

Figure 1-8 Flowchart of ALOM CMT CLI Variables for POST Configuration

ALOM CMT CLI Parameters and POST Modes shows typical combinations of ALOM CMT CLI variables and associated POST modes.

Table 1-8 ALOM CMT CLI Parameters and POST Modes

Parameter	Normal Diagnostic Mode (Default Settings)	No POST Execution	Diagnostic Service Mode	Keyswitch Diagnostic Preset Values
diag_mode	`normal`	off	`service`	`normal`
keyswitch_state The `keyswitch_state` parameter, when set to `diag`, overrides all the other ILOM POST variables.	`normal`	`normal`	`normal`	`diag`
diag_level	`max`	n/a	`max`	`max`
diag_trigger	`power-on-reset error-reset`	none	`all-resets`	`all-resets`
diag_verbosity	`normal`	n/a	`max`	`max`
Description of POST execution	This is the default POST configuration. This configuration tests the system thoroughly, and suppresses some of the detailed POST output.	POST does not run, resulting in quick system initialization. This is not a suggested configuration.	POST runs the full spectrum of tests with the maximum output displayed.	POST runs the full spectrum of tests with the maximum output displayed.