Linux Kernel Journey

Mar 22, 2026 · Fundamentals

Understanding EROFS: A Read‑Only Linux File System for Immutable Deployments

EROFS is a security‑focused, high‑performance read‑only Linux kernel file system designed for immutable scenarios such as container images, OS partitions, and AI model distribution, offering block‑aligned storage, minimal metadata, native compression, and host‑side page‑cache sharing to improve startup speed and reduce storage overhead.