9.7. File System Types

This section describes several of the most common file system types along with some of the tuneable parameters that relate to the creation and mounting of file systems.

9.7.1. HFS

The High Performance File System (HFS) is known by at least four names:

  • HFS

  • ufs (Unix File System)

  • Berkeley File System

  • McKusick File System

HFS is not the same as the System V File System, although some System V Release 4 variants may offer both. HFS was designed for environments with many small files; users of large files in HFS are deliberately penalized from a performance perspective, as will be seen in following sections.

9.7.1.1. HFS Layout

HFS file systems use the layout on disk shown in Figure 9-12. An HFS file system is composed of a primary ...

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