btrfs

Create subvolume

$ sudo btrfs subvolume create path/to/subvolume

$ sudo btrfs subvolume list path/to/mount

$ sudo btrfs filesystem df path/to/mount

$ sudo btrfs quota enable path/to/subvolume

$ sudo btrfs qgroup show path/to/subvolume

btrfs command [OPTIONS] [path]

btrfs is the primary management tool for btrfs filesystems. Btrfs is a modern copy-on-write (COW) filesystem for Linux featuring snapshots, subvolumes, checksums, and built-in RAID support.

subvolume (su)

Manage subvolumes and snapshots

Manage filesystem properties

Manage devices in the filesystem

Balance data across devices

Verify data integrity

Enable/disable quota support

Manage quota groups

Btrfs is under active development. Some features like RAID5/6 may have stability concerns. Regular scrubs are recommended for data integrity verification. Snapshots share space with their source until modified.

btrfs is the management tool for the B-tree file system, a modern Linux filesystem featuring advanced storage capabilities.

btrfs-subvolume(8), btrfs-filesystem(8), mkfs.btrfs(8)