btrfs

A filesystem based on the copy-on-write (COW) principle for Linux.

TLDR

Create subvolume

$ sudo btrfs subvolume create [path/to/subvolume]
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List subvolumes

$ sudo btrfs subvolume list [path/to/mount_point]
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Show space usage information

$ sudo btrfs filesystem df [path/to/mount_point]
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Enable quota

$ sudo btrfs quota enable [path/to/subvolume]
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Show quota

$ sudo btrfs qgroup show [path/to/subvolume]
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