YAFFS

Details of how YAFFS works, including the internal structures that YAFFS uses.

YAFFS, for Yet Another Flash Filing System, is a filing system optimised for NAND Flash chips, which are increasingly cheap and widely used. It is a log-structured (Journalled) FS which automatically provides wear-levelling and robustness on power failure. It also scales well for large Flash chip sizes, in terms of boot time and RAM usage. It is in use now in several commercial products under Linux and Windows CE, and various RTOSs, and has proved extrememly reliable. Price subject to negotiation

YAFFS is available free of charge under the Gnu Public Licence, GPL. This free version is suitable for use in contexts where the associated software has a GPL-compatible licence.

Access to the free GPL code is through our CVS server

Aleph One have developed the YAFFS File System specifically for NAND and NOR Flash chips.