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Translations:Btrfs/13/en
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- devices - one or multiple underlying physical volumes.
- volume - one large storage pool comprised of all space of the devices and can support different redundancy levels
- subvolumes - these are what get mounted and you store files in.
- snapshots - a read-only copy of a subvolume at a given point in time and/or read-write copy of a subvolume in time (aka clone).