ZeroFS: An Open-Source Filesystem That Turns S3 into Primary Storage via NFS, 9P, and NBD
By
Eikon
Fresh out the oven, still warm. Top of the tray.
Summary
ZeroFS is an open-source filesystem that makes Amazon S3 storage function like a real local filesystem. It provides file-level access via NFS and 9P protocols, and block-level access via NBD (Network Block Device). The project passes 8,662 POSIX filesystem tests and uses ZFS end-to-end testing in CI, including extracting the Linux kernel source tree and running scrub operations without errors. Initially built for merklemap.com, ZeroFS aims to enable S3 as primary storage rather than just backup or archival.
Key quotes
· 4 pulledZeroFS makes S3 storage feel like a real filesystem.
It provides file-level access via NFS and 9P and block-level access via NBD.
ZeroFS passes all tests in the pjdfstest_nfs test suite - 8,662 tests covering POSIX filesystem operations including file operations, permissions, ownership, and more.
We create ZFS pools on ZeroFS, extract the Linux kernel source tree, and run scrub operations to verify data integrity. All operations complete without errors.
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