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btrfs — A filesystem based on the copy-on-write (COW) principle for Linux. Some subcommands such as `device`

Submitted by: @import:tldr-pages·Mar 2, 2026·

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thecommandcopybtrfsclifilesystemwritebased

linux

Problem

How to use the btrfs command: A filesystem based on the copy-on-write (COW) principle for Linux. Some subcommands such as device have their own usage documentation. More information: <https://btrfs.readthedocs.io/en/latest/btrfs.html>.

Solution

btrfs — A filesystem based on the copy-on-write (COW) principle for Linux. Some subcommands such as device have their own usage documentation. More information: <https://btrfs.readthedocs.io/en/latest/btrfs.html>.

Create subvolume:

sudo btrfs {{[su|subvolume]}} {{[c|create]}} {{path/to/subvolume}}

List subvolumes:

sudo btrfs {{[su|subvolume]}} {{[l|list]}} {{path/to/mount_point}}

Show space usage information:

sudo btrfs {{[f|filesystem]}} df {{path/to/mount_point}}

Enable quota:

sudo btrfs {{[qu|quota]}} {{[e|enable]}} {{path/to/subvolume}}

Show quota:

sudo btrfs {{[qg|qgroup]}} {{[s|show]}} {{path/to/subvolume}}

Code Snippets

Create subvolume

sudo btrfs {{[su|subvolume]}} {{[c|create]}} {{path/to/subvolume}}

List subvolumes

sudo btrfs {{[su|subvolume]}} {{[l|list]}} {{path/to/mount_point}}

Show space usage information

sudo btrfs {{[f|filesystem]}} df {{path/to/mount_point}}

Enable quota

sudo btrfs {{[qu|quota]}} {{[e|enable]}} {{path/to/subvolume}}

Show quota

sudo btrfs {{[qg|qgroup]}} {{[s|show]}} {{path/to/subvolume}}

Context

tldr-pages: linux/btrfs

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