tldr/pages/linux/mkfs.btrfs.md

mkfs.btrfs

Create a BTRFS filesystem. Defaults to raid1, which specifies 2 copies of a data block spread across 2 different devices. More information: https://btrfs.readthedocs.io/en/latest/mkfs.btrfs.html.

• Create a btrfs filesystem on a single device:

sudo mkfs.btrfs {{[-m|--metadata]}} single {{[-d|--data]}} single {{/dev/sdX}}

• Create a btrfs filesystem on multiple devices with raid1:

sudo mkfs.btrfs {{[-m|--metadata]}} raid1 {{[-d|--data]}} raid1 {{/dev/sdX /dev/sdY /dev/sdZ ...}}

• Set a label for the filesystem:

sudo mkfs.btrfs {{[-L|--label]}} "{{label}}" {{/dev/sdX /dev/sdY ...}}

• Overwrite existing filesystem if one is detected:

sudo mkfs.btrfs {{[-f|--force]}} {{/dev/sdX}}