Fujitsu Developer Talks Up Btrfs File-System, Declares It Ready To Use Written by Michael Larabel in Linux Storage on 8 November 2014 at 09:30 AM EST. 15 Comments Besides Oracle, Facebook, and SUSE, another major company that's been investing in the Btrfs next-generation Linux file-system has been Fujitsu. Btrfs already offers some compelling, ZFS-like features not found in other native Linux file