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Questions and Answers
What term describes the entire file tree from the root directory downward?
What term describes the entire file tree from the root directory downward?
Which system architecture provides a standard interface for different file system types?
Which system architecture provides a standard interface for different file system types?
What is one of the primary administrative tasks concerning the file system?
What is one of the primary administrative tasks concerning the file system?
Which type of file system is typically stored on physical media?
Which type of file system is typically stored on physical media?
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Which component of file system commands applies specifically to one type of file system?
Which component of file system commands applies specifically to one type of file system?
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What is one of the activities involved in maintaining file systems?
What is one of the activities involved in maintaining file systems?
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What does mounting a file system involve?
What does mounting a file system involve?
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Which command category applies to most types of file systems?
Which command category applies to most types of file systems?
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What is the main characteristic of HSFS file systems?
What is the main characteristic of HSFS file systems?
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What does the TMPFS file system primarily use for temporary data storage?
What does the TMPFS file system primarily use for temporary data storage?
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Which file system is specifically designed to support access to kernel information and facilities?
Which file system is specifically designed to support access to kernel information and facilities?
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What can occur if a system with TMPFS does not have adequate swap space?
What can occur if a system with TMPFS does not have adequate swap space?
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Which file system is used to create a virtual file system with an alternative path name?
Which file system is used to create a virtual file system with an alternative path name?
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Which type of file system provides support for different operating systems to share files seamlessly?
Which type of file system provides support for different operating systems to share files seamlessly?
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What happens to files in a TMPFS file system when the system is shut down?
What happens to files in a TMPFS file system when the system is shut down?
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What is a primary advantage of using Cache File Systems?
What is a primary advantage of using Cache File Systems?
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What is the default file system type for the /tmp directory in the SunOS system software?
What is the default file system type for the /tmp directory in the SunOS system software?
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Which command is used to share a resource across a network in a distributed file system?
Which command is used to share a resource across a network in a distributed file system?
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What is the primary association for the PCFS file system?
What is the primary association for the PCFS file system?
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What file system allows processes to access common data via named pipes?
What file system allows processes to access common data via named pipes?
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Which of the following is NOT a characteristic of NFS?
Which of the following is NOT a characteristic of NFS?
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What does the PROCFS file system enable for debugging tools?
What does the PROCFS file system enable for debugging tools?
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Study Notes
File System Overview
- A file system structures directories for locating and storing files.
- It can describe the entire file tree, a specific file system type (disk-based, network-based, or pseudo), a data structure, or a portion attached to a mount point.
- Solaris uses Virtual File System (VFS) for a standard interface between different file system types.
File System Types
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Disk-based: Stored on physical media (hard disks, CD-ROMs, diskettes).
- Formats include UFS (default SunOS), HSFS (CD-ROM, read-only), and PCFS (DOS-formatted disks).
- UFS is used with hard disks, HSFS with CD-ROMs, PCFS with diskettes.
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Network-based: Accessed over a network.
- NFS is the only available network-based file system in SunOS.
- Administered by exporting from a server and mounting on other systems.
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Pseudo: Virtual or memory-based, accessing kernel information.
- TMPFS (temporary file system): uses local memory (fast), not permanent, default for /tmp
- LOFS: Creates virtual file systems; allows alternative path names (e.g., duplicating file systems).
- PROCFS: Stores active processes in /proc, accessed by commands like ps.
- Other pseudo file systems (FIFOFS, FDFS, NAMEFS) are used by different operating system functionalities.
File System Administration
- Key tasks include making local and remote files available, connecting/configuring devices, backing up/restoring files, checking for damage.
- Checking file system integrity is usually done during boot.
- Commands have generic components (apply to most types) and file-system-specific components (apply to one type).
- Administering distributed file systems (e.g., NFS) involves exporting them and mounting them on individual systems.
- Configuring shared resources (e.g., NFS) involves using commands like "share" or adding entries to /etc/dfs/dfstab. Entries must include syntax for pathname.
File System Performance
- Cache File Systems (e.g., tmpfs): store data read from a remote system or slow device (e.g.,CD-ROM) on the local system, improving performance of remote or slow devices.
- TMPFS uses local memory, offering significantly faster access to temporary files compared to disk-based file systems.
- Files in TMPFS are not permanent, deleting when unmounted.
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Description
This quiz covers the structure and types of file systems, including disk-based, network-based, and pseudo file systems. Learn about Virtual File System (VFS) in Solaris and the formats used for different storage media. Test your understanding of how file systems are organized and accessed in various environments.
