Post; Checkpoints; Accessing The Linux System Error Log; Service Aids And The Linux System Error Log - IBM JS20 - BladeCenter - 8842 Maintenance And Troubleshooting Manual

Note: The service processor runs on its own power boundary and continually

POST

After power is turned on and before the operating system is loaded, the system
does a power-on self-test (POST). This test performs checks to ensure that the
hardware is functioning correctly before the operating system is started. During
POST, a POST screen displays, and POST indicators appear on the Serial Over
LAN (SOL) console (if one is connected). The next section describes the POST
indicators and functions that can be accessed during POST.

Checkpoints

The system firmware uses checkpoints (progress codes and error codes) to indicate
the status of the system. These codes can appear only on the Serial Over Lan
(SOL) console. Firmware error codes and messages indicate that a problem exists;
they are not intended to be used to identify a failing part.
Checkpoints display in the system console from the time ac power is connected to
the system until the operating system login prompt is displayed after a successful
operating system boot. These checkpoints have the following forms:
Exxx
Error codes
The management-module log, which can be accessed through the Blade Center
unit, contains the most recent error codes and messages that the system generated
during POST.

Accessing the Linux system error log

If the system information LED is lit, do one of the following:
1. Check for an entry in the BladeCenter management-module event log. If the
2. Go to "General checkout" on page 37.

Service aids and the Linux system error log

Linux on pSeries
who have installed and are running Linux. Users can install these free diagnostics
tools for effective diagnosis and repair of their system in the rare instance when a
system error occurs.
This service aid toolkit provides the key tools required to take advantage of the
inherent pSeries hardware reliability, availability, and serviceability (RAS) functions
as outlined in the Linux on pSeries RAS Whitepaper, available from
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BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide
monitors hardware attributes and the environmental conditions within the
system. The service processor is controlled by firmware and does not require
the operating system to be operational to perform its tasks.
Exxx checkpoints indicate that a system processor is in control and
is initializing the system resources. Control is being passed to the
operating system when E105 displays on the operator panel
display. Location code information may also display on the operator
panel during this time (see "Physical location codes" on page 154).
If a fault is detected, an 8-digit error code is displayed in the
BladeCenter management module event log. A location code might
be displayed at the same time on the second line.
information in this log is either a four-digit or eight-digit error code, go directly to
"Firmware checkpoint (progress) codes" on page 94 or "Firmware error codes"
on page 102.
®
service aids for hardware diagnostics are available for customers