OverlayFS

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

• df -kh -x overlay

-x --exclude .For example: overlay

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

docker info | grep "Storage Driver"
Storage Driver: overlay2

Activities

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

Related terms

• Docker
• aufs (2006)
• /var/lib/docker/overlay2/
• Docker-compose: volumes:
• /runc-overlayfs/
• /runc-overlayfs/snapshots/

See also

• overlay2
• 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