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The New Ext4 Filesystem: Current Status and Future Plans

Avantika Mathur (mathur@us.ibm.com)

Ext3 has been the most widely used general Linux filesystem for many years.  In keeping with increasing disk capacities and state-of-the-art feature requirements, the next generation of ext3, ext4, was created last year.  This new filesystem incorporates scalability and performance enhancements for large filesystems, while maintaining reliability and stability.  Ext4 will be suitable for a larger variety of workloads and is expected to replace ext3 as the "Linux filesystem".  


In this presentation we will discuss the reasons for creating ext4,  explore the enhanced capabilities currently available and planned for ext4, discuss methods for migrating between ext3 and ext4, and present a comparison of ext4 and other filesystem performance.