Table of Contents
Chapter 1. System Boot, Startup, and Shutdown Issues
Editing the Menu Choices with GRUB
Booting When GRUB or LILO Doesn’t Work
The init Process and/etc/inittab File
Startup Problems in rc Scripts
Fixing Problems with the Root Filesystem
Booting from a Second Hard Disk
Reset Lost Root Password Using a Knoppix CD
Reinstall GRUB Using Knoppix CD
Booting from a Floppy Rescue Disk
Chapter 2. System Hangs and Panics
Troubleshooting Interruptible Hangs
Troubleshooting Non-Interruptible Hangs
Troubleshooting Panics Resulting from Oops
Start Troubleshooting at the Lowest Layer Possible
Binding a Raw Device to a Block Device Using the raw Command
Using the dd Command to Determine Sequential I/O Speed
Using sar and iostat to Measure Disk Performance
Understanding the Importance of I/O Block Size When Testing Performance
Multiple Threads (Processes) of I/O to a Disk
Using a Striped lvol to Reduce Disk I/O Strain
Determining I/O Size for Filesystem Requests
Loading a Filesystem with Small Block I/O Transfers
Utilizing Key Benefits of a Filesystem
Linux and Windows Performance and Tuning Sector Alignments
Performance Tuning and Benchmarking Using bonnie++
Assessing Application CPU Utilization Issues
Troubleshooting “No Space Left on Device” Errors When Allocating Shared Memory
Chapter 5. Adding New Storage via SAN with Reference to PCMCIA and USB
Chapter 6. Disk Partitions and Filesystems
Partition Table/Master Boot Record: Location
Partition Table/Master Boot Record: CHS Addressing
Determining Whether Additional Partitions Can Be Created
Partition Table/Master Boot Record: Logical/Extended
Partition Table/Master Boot Record: Logical Block Addressing (LBA)
Partition Table/Master Boot Record: Bootloader
BIOS Initializing the Bootloader
Partition Table/Master Boot Record: Backup
Partition Recovery Walkthrough
Recovering Superblock and Inode Table on ext Filesystems
Chapter 7. Device Failure and Replacement
Replacement of a Failed Device
Chapter 8. Linux Processes: Structure, Hangs, and Core Dumps
Process Structure and Life Cycle
Basic Backup and Recovery Commands
I Have a Tape, and I Don’t Know What It Is . . .
How Can I Tell Whether My Tape Problem Is Hardware or Software?
Chapter 11. Printing and Printers
Terminal Servers (Networked Serial)
General Printing Troubleshooting
Mapping the Spooling Environment
Classes of Host Vulnerabilities
Types of Vulnerabilities and Exposures
General Steps to Increase Host Security
System Hardening with netfilter/iptables
An Introduction to the OSI and TCP/IP Layers
Troubleshooting the Network Layers
Troubleshooting the TCP/IP Physical Network Access Layer
Troubleshooting the Network Layer (OSI Third Layer, TCP/IP Second Layer)
Troubleshooting at the Transport Layer (TCP and UDP)
Troubleshooting at the Application Level: The Final Layer of the TCP/IP Model
/etc/passwd, /etc/shadow, and Password Aging
/etc/passwd and /etc/shadow Corruption
Login Failures Due to Linux Configuration
Chapter 15. X Windows Problems