A new version of the Linux kernel, 2.6.34, has been released by Linus Torvalds featuring two new file systems and a number of updates to virtualisation and device driver code.
file systems - News, Features, and Slideshows
A new open source project, dubbed Opendedup, has appeared with the goal of creating a deduplication-based file system for Linux called SDFS.
Whitepapers about file systems
This white paper describes how the Tintri OS and its underlying file system provide unparalleled data integrity and intelligent performance for serving hundreds of VMs in a single appliance. It also examines Tintri's proprietary redundant array of independent disks (RAID) implementation for comprehensive data integrity.