Files
rustfs/crates/ecstore
Zhengchao An 1cc1fc0f83 fix(ecstore): exclude failed-shard disks from commit so write quorum isn't inflated (backlog#852) (#4309)
`MultiWriter` recorded per-writer failures only in a private `errs` vector and
nulled the failed writer locally, but `put_object` never used that to prune the
disk set: `rename_data` ran over the full `shuffle_disks`, so a disk that took a
short/failed write still had its truncated shard renamed into place and counted
as an online disk. The object then claimed N good shards while one was
short/corrupt, so a single later disk failure could drop it below reconstructable
quorum — silent data loss.

- `write_shard`: null the writer on a generic write error too (not only on
  `ShortWrite`), so a failed writer is uniformly represented as `None` — matching
  `shutdown_writer`, which already does this.
- `put_object`: after encode, drop every disk whose writer failed
  (`drop_failed_writer_disks`) from `shuffle_disks` before `rename_data`, and
  re-check write quorum over the survivors. `rename_data` already re-checks
  quorum and rolls back if too few disks remain, so excluded disks are neither
  committed nor counted (MinIO sets failed writers to nil before `renameData`).

Adds unit tests for the exclusion/quorum accounting.

Refs backlog#799 (B3).
2026-07-06 21:05:05 +08:00
..

RustFS

RustFS ECStore - Erasure Coding Storage

High-performance erasure coding storage engine for RustFS distributed object storage

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📖 Overview

RustFS ECStore provides erasure coding storage capabilities for the RustFS distributed object storage system. For the complete RustFS experience, please visit the main RustFS repository.

Features

  • Reed-Solomon erasure coding implementation
  • Configurable redundancy levels (N+K schemes)
  • Automatic data healing and reconstruction
  • Multi-drive support with intelligent placement
  • Parallel encoding/decoding for performance
  • Efficient disk space utilization

📚 Documentation

For comprehensive documentation, examples, and usage guides, please visit the main RustFS repository.

📄 License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.

Copyright 2024 RustFS Team

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you may not use this file except in compliance with the License.
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