全球范围内的EROFS：一种适用于各种用例的基于镜像的内核方法 | KC23

EROFS Everywhere: An Image-Based Kernel Approach for Various Use Cases - Xiang Gao, Alibaba Cloud

全球范围内的EROFS：一种适用于各种用例的基于镜像的内核方法 | EROFS Everywhere: An Image-Based Kernel Approach for Various Use Cases - Xiang Gao, Alibaba Cloud

自2019年将EROFS引入Linux内核5.4以来，它在Android世界中得到了广泛应用。自Android 13（2022年）以来，EROFS实际上已成为Android推荐的系统分区文件系统之一。在本主题中，将介绍最近内核版本（截至v6.4）中新增的功能，如全局压缩数据去重等。在过去两年（2021-2022年），EROFS在容器领域也带来了几项技术创新，例如为runC容器提供的EROFS over fscache，为安全容器提供的EROFS DAX支持，为机密容器提供的EROFS TarFS使用案例以及OSTree/Composefs使用案例（erofs+overlayfs）。本主题还将详细介绍这些技术的内部技术细节。最后，将像往常一样展示开发路线图，以供对EROFS文件系统未来感兴趣的所有人参考。

Since EROFS was introduced to Linux kernel 5.4 in 2019, it has been widely used in Android world these years. EROFS has actually become a Android recommended file system for system partitions since Android 13 (2022). In this topic, new features shipped in the recent kernels (up to v6.4) like global compressed data deduplication and more will be introduced. Since the past years (2021-2022), EROFS has also been rapidly adapted to the container world with several technology innovations such as EROFS over fscache for runC containers, EROFS DAX support for secure containers, EROFS TarFS use cases for confidential containers and OSTree/Composefs use cases (erofs+overlayfs). Detailed technology internals of these technologies will also be given in this topic. Finally, a development process will be shown as usual for everyone interested in the EROFS filesystem future.

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