IBM RS/6000 7025 manual Service Processor Reboot/Restart Recovery, Operation

ŸFollow-up to a Failed Boot Attempt

The Service Processor will initiate a power-on sequence upon detection of a failed boot attempt.

Service Processor Reboot/Restart Recovery

Reboot	describes	bringing	the	system hardware back	up from scratch, for example
from a system reset or power				on. The boot process	ends when control passes to
operating system		process.

Restart describes activating the operating system after the system hardware reinitialized. Restart must follow a successful reboot.

Failure

During

Boot

Process:

During the boot process, either initially after

system power-on or upon

reboot

after a system failure, the Service Processor (SP)

monitors the boot progress (via surveillance). If progress stops, the Service

Processor

can

reinitiate

the

boot process (reboot) if enabled to do so. The Se

Processor can re-attempt

this

process

according

to an

entry

on the

Reboot/Restar

Policy

Setup

Menu.

Failure

During

Normal

System

Operation:

When the boot process completes

and control

transferers

to the operating system (OS), the Service Processor can

monitor operating system

activity

(see

the SERVICE PROCESSOR SETUP MENU

item

Set

Surveillance

Parameters).

If OS

activity

stops,

the

Service

Processor can

initiate a reboot/restart process based on the settings in the Service Processor Reboot/Restart Policy Setup Menu and the OS automatic restart settings (see OS documentation).

If	the operating system		is AIX, the menu item under SMIT	for	setting	the	resta
policy is		Automatically Reboot After Crash (True/False), and		the	default	is	False.
When	the	setting is True, and if the SP parameter, Use		OS-Defined Restart Polic
Yes	(the	default), the	Service Processor takes over for	AIX	to reboot/restart
Check	Stop	or Surveillance	failure.

Service Processor Reboot/Restart Policy Controls:The operating system's

automatic restart policy (see operating system documentation) indicates the OS

response	to	a system crash. The	SP can	be	instructed to refer to that policy,
by the	Use	OS-Defined Restart	Policy	menu	item.

If the operating system has no automatic restart policy, or if it is disabled, Service Processor restart policy can be controlled from the Service Processor Menus by using the Enable Supplemental Restart Policy selection.

Chapter 4. Service Processor4-27Menus