Service Procedures for Linux on IBM Power Systems Servers

An IBM Redpaper publication

Published 19 October 2020

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ISBN-10: 0738459062
ISBN-13: 9780738459066
IBM Form #: REDP-5611-00
(28 pages)

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Authors: Scott Vetter, Luciano Chavez, Janani Janakiraman, Brahadambal Srinivasan

Abstract

Collecting data on first occurance of the problem can id in problem determination and timely resolution of defects. At IBM®, this process of collecting data on first occurance if often referred to as First Failure Data Capture (FFDC). Gathering this data before reporting a defect helps to understand the problem more quickly and thoroughly, which saves time analyzing data and reduces the time and mission affects in fixing defects.

Several diagnostic capabilities are built into the Linux operating system that enable you to determine the application level problems and system level problems. Collecting FFDC logs early, even before opening a defect report, helps to quickly determine whether:


  • Symptoms match known problems (rediscovery)
  • A report can be identified and resolved as a not-a-defect problem
  • A workaround to reduce severity exists

Table of contents

Introduction
Configuring systems to collect logs
Firmware Assisted Dump
Defect submission guidelines
System crash and hang issues
Linux installation issues
DLPAR and LPM issues
Storage and I/O Issues
Networking issues
kdump issues
Virtualization issues
Conclusion
Firmware Assisted Dump

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