btrfs

Create new partition

# mkfs.btrfs -L mylabel /dev/partition

To overwrite the existing partition table with Btrfs:

# mkfs.btrfs /dev/sdX

One can use subvolumes to simulate partitions.

Mount options

Btrfs on a SSD for system installation and an emphasis on maximizing performance.

noatime,discard,ssd,autodefrag,compress=lzo,space_cache

Btrfs on a HDD for archival purposes with an emphasis on maximizing space.

noatime,autodefrag,compress-force=lzo,space_cache

Compression can also be enabled per-file without using the compress mount option; simply apply chattr +c to the file or directory.

Displaying used/free space

# btrfs filesystem df DIR