File system: XFS
XFS - highly productive journaling file system invented by company Silicon Graphics for their operation system IRIX. 1 may 2001 Silicon Graphics issued XFS under GNU General Public License.
Support if XFS was included to Linux kernel from version 2.4 (Marcello Tosatti desided, that XFS is stable). Installers of Suse, Gentoo, Mandriva, Slackware, Ubuntu, Fedora and Debian offer XFS as variant of file system for root directory. FreeBSD has been supporting XFS in read only mode since december 2005.