tldr/pages/linux/btrfs.md

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# btrfs
> A filesystem based on the copy-on-write (COW) principle for Linux.
> Some subcommands such as `btrfs device` have their own usage documentation.
> More information: <https://btrfs.readthedocs.io/en/latest/btrfs.html>.
- Create subvolume:
`sudo btrfs subvolume create {{path/to/subvolume}}`
- List subvolumes:
`sudo btrfs subvolume list {{path/to/mount_point}}`
- Show space usage information:
`sudo btrfs filesystem df {{path/to/mount_point}}`
- Enable quota:
`sudo btrfs quota enable {{path/to/subvolume}}`
- Show quota:
`sudo btrfs qgroup show {{path/to/subvolume}}`