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CHFS

File system

CHFS is a file system developed at the Department of Software Engineering, University of Szeged, Hungary. It was the first open source flash memory-specific file system written for the NetBSD operating system. Intended usage is over raw flash devices on embedded systems like ARM and MIPS, the filesystem is less suitable for use on consumer SSD (because consumer SSDs already make sure to not use the same physical blocks for writing modified data).

01Structure

Similar to UBIFS, the CHFS file system utilizes a separate layer for handling Flash aging and bad blocks, called EBH (erase block handler). The file system itself is modelled after JFFS2, thus the internal structure is very similar.

02ChewieFS

CHFS was originally called ChewieFS during development. The name was changed to avoid legal issues and to have a more neutral name.

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Sources and credits

This article is adapted from the Wikipedia article CHFS, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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