Parts of a UFS File System

UFS is the default disk-based file system used in the Solaris system software. It provides the following features:

  • State flags. These show the state of the file system as clean, stable, active, or unknown. These flags eliminate unnecessary file system checks. If the file system is clean or stable, fsck (file system check) is not run when the system boots.

  • Extended fundamental types (EFT). These include a 32-bit user ID (UID), a group ID (GID), and device numbers.

  • Large file systems. A UFS file system can be as large as 1 terabyte (TB) and can have regular files up to 2 gigabytes (GB). By default, the Solaris system software does not provide striping, which is required to make a logical slice large enough ...

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