zfs
A copy-on-write filesystem, and the Docker storage driver that uses it when the data root lives on ZFS.
In more detail
It supports snapshots and compression but needs more memory and setup than overlay2. Docker uses it only on a ZFS-backed data root.
Related terms
- storage driver — The part of the Docker daemon that decides how image layers and container writable layers are stored on disk.
- OverlayFS — The Linux union filesystem Docker uses to stack image layers into a container root directory.
Taught in
- One Comma, No Engine: Installing And Configuring Docker Engine — Docker Certified Associate (DCA) Exam Prep
- Two Containers, How Much Disk? Storage Drivers, Layers And devicemapper — Docker Certified Associate (DCA) Exam Prep