Documentation File Systems Beat

F13
Beat owner should begin placing Fedora 13 content in this beat.

Btrfs

• Btrfs is under development as a file system capable of addressing and managing more files, larger files, and larger volumes than the ext2, ext3, and ext4 file systems. Btrfs is designed to make the file system more tolerant of errors, and to facilitate the detection and repair of errors when they do occur. It uses checksums to ensure the validity of data and metadata, and maintains snapshots of the file system that can be used for backup or repair.

This filesystem snapshot feature is available in Fedora for the first time in Fedora 13. An automatic snapshot is created every time that the yum package manager performs an installation or upgrade. Because Btrfs is still experimental and under development, the installation program does not offer it by default. If you want to create a Btrfs partition on a drive, you must commence the installation process with the boot option btrfs. Passing the btrfs boot option on a DVD or CD based installation also allows Anaconda to access and mount a pre-existing btrfs partition. This option does not work with Fedora Live media.

NFS

• Fedora 13 will also include NFSv4 as its default NFS protocol (upgraded from NFSv3 in Fedora 12).

Fedora now supports mounting NFS exports with IPv6.