Practical Filesystem Design
with the Be File System
From the preface:
Although many operating system textbooks offer high- level descriptions of file systems, few go into sufficient detail for an implementor, and none go into details about
advanced topics such as journaling. I wrote this book to address that lack of information. This book covers the details of file systems, from low-level to high-level, as well as related topics such as the disk cache, the file system interface to the kernel, and the user-level APIs that use the features of the file system. Reading this book should give you a thorough understanding of how a file system works in general, how the Be File System (BFS) works in particular, and the issues involved in designing and implementing a file system.