XFS is a high-performance, 64-bit journaling file system created by Silicon Graphics, Inc (SGI) in 1993. It was the default file system in SGI's IRIX operating system starting with its version 5.3. XFS was ported to the Linux kernel in 2001; as of June 2014, XFS is supported by most Linux distributions; Red Hat Enterprise Linux uses it as its default file system. XFS excels in the execution of parallel input/output (I/O) operations due to its design, which is based on allocation groups (a type of subdivision of the physical volumes in which XFS is used- also shortened to AGs).

XFS file systems are internally partitioned into allocation groups, which are equally sized linear regions within the file system. Files and directories can span allocation groups. Each allocation group manages its own inodes and free space separately, providing scalability and parallelism so multiple threads and processes can perform I/O operations on the same file system simultaneously. This architecture helps to optimize parallel I/O performance on systems with multiple processors and/or cores, as metadata updates can also be parallelized.

XFS offers a number of advantages over other file systems, including:

  • High performance: XFS is one of the fastest file systems available. It is particularly well-suited for large files and databases.
  • Scalability: XFS can be scaled to very large sizes. It can handle file systems with billions of files and petabytes of data.
  • Reliability: XFS is a very reliable file system. It is less likely to become corrupted in the event of a crash than other file systems.
  • Features: XFS offers a number of features that make it a good choice for storing data, including file compression, file deduplication, and extended metadata.

XFS is a good choice for storing data on Linux computers. It is a high-performance, scalable, and reliable file system.

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