Show HN: ZeroFS – A log-structured filesystem for S3
ZeroFS serves S3-compatible buckets as POSIX filesystems over NFS and 9P, or as raw block devices over NBD. The engine is log-structured : writes go out as immutable objects and compaction reclaims what you delete. Data is compressed and encrypted before upload, and warm reads come from local cache in microseconds.
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CI runs pjdfstest, xfstests, kernel builds, stress-ng, ZFS scrubs, Jepsen's local-fs suite, and a Jepsen failover suite on every change. The first three run separately over NFS, 9P, and the FUSE client. Each card links to the CI pipeline.
The pjdfstest suite runs on every change, once per protocol: permissions, ownership, links, rename behavior. The exclude lists, a few cases per protocol, are published in the repository.
The kernel filesystem test suite runs over NFS, 9P, and FUSE in separate workflows. These are the tests ext4 and XFS themselves are validated against.
CI builds a ZFS pool on ZeroFS block devices, extracts the Linux kernel source tree onto it, and runs a full scrub. The scrub reports no checksum errors.