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Explore EROFS filesystem technology and its applications in container environments through this 31-minute conference talk from the Linux Plumbers Conference. Learn about EROFS as a modern, high-performance, block-based Linux image filesystem featuring advanced on-disk formatting capabilities including separated layouts for compressed and uncompressed data, optional external data blobs, multi-algorithm compression support, fine-grained data deduplication, and optional metadata compression. Discover how EROFS has evolved from its origins in Android system firmware to deployment on billions of devices across mainstream Linux distributions including RHEL 9/10, Amazon Linux, Alibaba Cloud Linux, Azure Linux, and Oracle Linux. Examine EROFS's integration with container-related projects such as composefs, containerd, and Kata containers, while exploring its applications in container images, immutable OS images like AWS Bottlerocket, and application sandboxes. Gain insights into ongoing developments including page cache sharing, filesystem data integrity verification for container rootfs, unprivileged mounts, and efficient remote storage passthrough for S3 object storage in AI infrastructure environments.
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