> Perhaps there is a filesystem out there that supports CoW in a way that fits this usecase I'd recommend zfs snapshots - or for something a bit different, may

> Perhaps there is a filesystem out there that supports CoW in a way that fits this usecase I'd recommend zfs snapshots - or for something a bit different, maybe nilfs2: http://www.linux-mag.com/id/7345/ http://www.linux-mag.com/id/7345/