Chapter 7. Disk Cache Basics

I'm going to talk a lot about disk storage and filesystems in this chapter. It is important to make sure you understand the difference between two related things: disk filesystems and Squid's storage schemes.

Filesystems are features of particular operating systems. Almost every Unix variant has an implementation of the Unix File System (UFS). It is also sometimes known as the Berkeley Fast File System (FFS). Linux's default filesystem is called ext2fs. Many operating systems also support newer filesystem technologies. These include names and acronyms such as advfs, xfs, and reiserfs.