Thriving Thriving Rust RS
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ceph-rust croit/ceph-rust

Ceph, rewritten from scratch in Rust: wire-compatible daemons and client libraries for a huge leap in performance and stability. OSD with its own NVMe store, CephFS2, librustyrados, librustyrbd and librustycephfs, RDMA and GPUDirect. Runs alongside classic Ceph in existing clusters. By croit.

HEALTH ? 90 / Healthy
11-2026 · today · MartinVerges
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// readme

croit ceph-rust

Ceph, rewritten in Rust for NVMe, fast networks and GPUs.

croit ceph-rust is croit’s ground-up Rust implementation of Ceph services and client libraries. Every component speaks the Ceph wire protocol and drops into an existing Ceph cluster: no forklift migration, no new tooling — your monitors, managers, ceph CLI and applications keep working. Replace one drive, one server or one client at a time.

More: product page · blog post: rebuilding Ceph in Rust

  • Built for flash. FlashStore, our object store, is designed for NVMe from the first line: thread-per-core, lock-free hot paths, zero-copy data paths, acknowledged only when the data is durable on power-loss-protected NVMe.
  • Drop-in compatible. The FlashStore OSD and librustyrados are wire-compatible with Ceph v21.2.0 (Umbrella) and v20.2.4 (Tentacle); librustyrbd exposes the v21.2.0 librbd C API and is tested against v21.2.0 and v20.2.4 clusters. The OSD runs side by side with classic OSDs in the same pools and placement groups.
  • Fast networks and GPUs. Kernel TCP…