A Non-Technical Look inside the EXT2 File System

How the EXT2 file system is organized on the disk and how it gets its speed.
Conclusion

As has been said before, one should make things as simple as possible, but no simpler. The EXT2 file system is rather more complex than most people realize, but this complexity results in both the full set of Unix operations working correctly, and good performance. The code is robust and well tested and serves the Linux community well. We all owe a debt of thanks to M. Card.

Sources for More Information

Randy Appleton is a professor of Computer Science at Northern Michigan University. He got his Ph.D. at the University of Kentucky. He has been involved with Linux since before version 0.9. Current research includes high performance pre-fetching file systems, with a coming port to the 2.X version of Linux. Other interests include airplanes, especially home-built ones. He can be reached via e-mail at randy@euclid.acs.nmu.edu.

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