EROFS (Enhanced Read-Only File System) is a lightweight read-only file system initially developed by Huawei for the Linux kernel. EROFS aims to form a generic read-only filesystem solution for various read-only use cases (embedded devices, containers and more.) instead of just focusing on storage space saving without considering any side effects of runtime performance. Also, it provides a content-addressable chunk-based container image solution together with lazy pulling feature to accelerate container startup speed by using new file-based fscache backend since Linux kernel v5.19.