Managing Unix filesystems is one of the system administrator’s most importanttasks. You are responsible for ensuring that users have access to the files they need and that these files remain uncorrupted and secure. Administering afilesystem includes tasks such as:
Making local and remote files available to users
Monitoring and managing the system’s disk resources
Protecting against file corruption, hardware failures, and user errors via a well-planned backup schedule
Ensuring data confidentiality by limiting file and system access
Checking for and correcting filesystem corruption
Connecting and configuring new storage devices when needed
Some of these tasks—such as checking for and correcting filesystem corruption—are usually done automatically at boot time, as part of the initial system startup. Others—like monitoring disk space usage and backups—are often done manually, on a periodic or as-needed basis.
This chapter describes how Unix handles disks and filesystems. It
covers such topics as mounting and dismounting local and remote
filesystems, the filesystem configuration file, making local filesystems
available to remote Unix and Windows users, checking local filesystem
integrity with the
fsck utility, and
adding new disks to the system. It also looks at some optional filesystem
features offered in some Unix implementations.
We looked at file ownership and protection in Section 2.1. This chapter considers filesystem protection for network shared filesystems. ...