Files
rustfs/crates/ecstore
唐小鸭 1c56410364 fix(ecstore): persist merged checksum type for full-object multipart
complete_multipart_upload built the object-level checksum record from a
ChecksumType copied before the MULTIPART / INCLUDES_MULTIPART flags were
merged in. ChecksumType::merge takes &mut self, so the merge updated the
local variable while the copy already inside the Checksum struct stayed
behind. The composite branch rebuilt the Checksum from the merged type
and was unaffected; the full-object branch never rebuilt it, so those
flags never reached disk.

rustfs_rio::read_checksums only sets its multipart flag and only emits
the "x-amz-checksum-type" = "FULL_OBJECT" entry inside its MULTIPART
branch, so a full-object multipart object read back as non-multipart with
no type entry, and GetObject and HeadObject answered with no
x-amz-checksum-type header at all where AWS returns FULL_OBJECT.

Hand the full-object branch the merged type instead of rebuilding the
Checksum: the value must stay the running merge produced by add_part,
because hashing the concatenated part digests would yield the COMPOSITE
value, a different number than the one the client sent. The serialization
now lives in multipart_object_checksum_record so both shapes are covered
by unit tests.

Records written by earlier builds carry the bare algorithm type with no
MULTIPART flags and no trailing part block; they keep reading back to the
same checksum value, and the FULL_OBJECT reader arm predates this change
so older peers parse the new record shape correctly too.

Found while root-causing rustfs#6825.
2026-09-02 19:08:30 +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

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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All other trademarks are the property of their respective owners.

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