Reiser

Reiser is a surname of German origin. It is associated in contemporary usage mainly with individuals bearing the name and, in technology, with a family of Linux file systems named after one of its bearers.

In computing, ReiserFS and Reiser4 are file systems for the Linux kernel developed by Hans Reiser. ReiserFS is a journaling file system that achieved widespread use in the early 2000s, while Reiser4 is a later, more feature-rich version intended to extend the capabilities of the original design.

Notable people with the surname include Hans Reiser (born 1963), an American computer programmer and entrepreneur who created the ReiserFS file system and co-founded the company Namesys. The name Reiser can also be found among other individuals in public records, particularly in German-speaking regions, but Hans Reiser is the most prominent link to the technology associated with the name.

Overall, Reiser primarily denotes a family name of German origin and, in a technical context, a pair of Linux file systems—the ReiserFS family—named for its developer.