LogFS

• logfs - LogFS is a scalable flash filesystem. It is aimed to replace

JFFS2 for most uses, but focuses more on the large devices.

Matt Mackall writes (in July of 2007):

LogFS is a filesystem designed to support large volumes on FLASH. It
uses a simple copy-on-write update process to ensure consistency (the
"log" in the name is a historical artifact). It's easily the most
modern and scalable open-source FLASH filesystem available for Linux
and it's well on its way to being accepted in the mainline tree.

Scott Preece writes:

The big win for LogFS (in my limited knowledge of it) is that it stores
its tree structure in the media, rather than building it in memory at
mount time. This significantly reduces both startup time and memory
consumption. This becomes more important as the size of the flash device
increases. Read more in LWN (http://lwn.net/Articles/234441) and
linux.com (http://www.linux.com/articles/114295).

Some newer flash memory, like MLC (multi-level cell), are not well supported.

LogFS now has its own mailing list: see http://logfs.org/cgi-bin/mailman/listinfo/logfs