OverlayFS

wikipedia:OverlayFS (2010) was merged into the Linux kernel mainline in 2014, in kernel version 3.18

df -kh -xoverlay
-x --exclude . For example: overlay 

Linux Kernel 5.11 (Feb 2021) includes unprivileged Overlayfs mounts.

Activities

• Read https://wiki.archlinux.org/index.php/Overlay_filesystem

Related terms

• Docker
• aufs (2006)
• /var/lib/docker/overlay2/

See also

• File systems: ext4, XFS, ZFS, btrfs, wipefs, findfs, HDFS, overlay, aufs, virt-filesystems, Windows: (FAT, NTFS, ReFS), GPFS, squashfs, Ecryptfs, Encfs, FUSE, VMFS, Comparison of distributed file systems, Userspace filesystem, Resize filesystem size