Just published my podcast interview with Chris Mason, who heads up Oracle's Linux Kernel team, about his new Btrfs (pronounced "butter - eff - ess", I learned) filesystem. Nice guy. (This is a follow-up to an earlier conversation with him about Linux Kernel development at Oracle generally.)
As some in the community suspected, Btrfs truly is intended as a replacement for the creaky ext3. This may raise eyebrows in some segments of the community, but few can deny the need for an upgrade at this point.
This project is of course hosted at oss.oracle.com/projects/btrfs.