File System Swap

As the name suggests, we may also allocate swap space from swap files reserved on mounted file systems. The swap files are sized in alignment with the swap chunk size (the swap chunk is the basic unit used to track swap in kernel data structures, we will discuss it in detail shortly) and may be dynamically allocated as needed. When a file system swap space is initialized, a minimum and maximum amount of space may be configured. A reserved free space limit for the file system may also be specified.

Initialized file system swap appears as a directory named paging, which contains individual swap files. The swap file naming convention is somewhat interesting. The root of the name is the system's hostname followed by a period (.

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