OverlayFS

An overlay-filesystem tries to present a filesystem which is the result of overlaying one filesystem on top of the other.

File system · by Miklos Szeredi · kernel.org

Open OverlayFS in AirStack

What OverlayFS’s own pages say

What it says it doesAn overlay-filesystem tries to present a filesystem which is the result of overlaying one filesystem on top of the other. kernel.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.