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   LinuxPlanet / Reports



  Rethinking the Datacenter
Sponsored by HP
Today's datacenters need to increase utilization, get control over power and cooling costs, and align with business objectives. Download this eBook to learn about the challenges facing the data center in a world where digital information is growing at a torrid pace and costs are being held in check. Learn more. »
 
  Putting the Green into IT
Sponsored by HP
Electricity use in data centers is skyrocketing, sending energy bills through the roof, creating environmental concerns and generating negative publicity. "Going Green" means looking to technologies like virtualization, energy-efficient chips and racks, and implementing policies that extend beyond the data center. Learn more. »
 
  Managing the Modern Network
Sponsored by HP
In a global economy where information crosses the globe in an instant, and where Web-based applications power business, it's more important than ever to ensure your network is safe from threats and optimized to deliver the data your business needs. »
 
  Evaluating Software as a Service for Your Business
Sponsored by Webroot
Is Software as a Service just hype, or is something really going on here? See if your company can benefit as SaaS tries to change the face of the enterprise. »
 
  Is Your Disaster Recovery Plan Good Enough?
Sponsored by HP
Preparing for a disaster is more often than not part of the storage planning process, and it is one of the most difficult tasks, since it includes local hardware and software, networking equipment, and a test plan. Learn how to get disaster recovery right. »
 
Exploring the ext3 Filesystem
Introduction to the ext3 Filesystem

Bill von Hagen
Friday, April 5, 2002 09:53:55 AM

As a sophisticated, powerful, and free operating system, Linux provides a fertile territory for developing sophisticated system and user-level software. Some of the most exciting developments in recent Linux kernels are new, high-performance techniques for managing how the data on Linux systems is stored, allocated, and updated on disk. One of the most interesting of these new mechanisms is the ext3 filesystem, which has been integrated into the Linux kernel since version 2.4.16 and is already available as a default filesystem type on Linux distributions from Red Hat and SuSE.

The ext3 filesystem is a journaling filesystem that is 100% compatible with all of the utilities created for creating, managing, and fine-tuning the ext2 filesystem, which is the default filesystem used by Linux systems for the last few years. Before delving into the differences between the ext2 and ext3 filesystems, a quick refresher on storage and filesystem terminology is in order.

Next: Some Background on Linux Filesystems »

Skip Ahead

1 Introduction to the ext3 Filesystem
2 Some Background on Linux Filesystems
3 What is Journaling?
4 The Linux ext3 Filesystem
5 Multiple Journaling Modes in the ext3 Filesystem
6 Conclusion





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