* chore(ecstore): drop the disk dead_code blanket
Removing the blanket exposes 36 items in the lowest storage layer: 7 deleted, 29 kept with reasoned item-level allows. That is the smallest deletion share of this burn-down, and the reason is a verification limit rather than a judgement call.
disk/local.rs carries 141 `#[cfg(target_os = "linux")]` sites — the densest platform gating in the tree, because O_DIRECT and io_uring only exist there. The direct-I/O cluster (six ENV_RUSTFS_OBJECT_DIRECT_IO_* constants plus is_direct_io_read_enabled, is_direct_io_write_enabled, get_direct_io_read_threshold, direct_write_staging_capacity, direct_write_tail_split and DIRECT_WRITE_STAGING_BYTES) reads as dead on macOS purely because its production callers at local.rs:1766, 3114 and 4605 sit inside Linux-gated blocks. direct_write_staging_capacity even documents itself as "Platform-independent (no O_DIRECT), so it is unit-tested on any host".
Deleting those would leave every local check green — 4096 tests pass, clippy is clean, make pre-commit exits 0 — and break the Linux build in CI, because all four local lanes compile for aarch64-apple-darwin. Cross-checking locally is not available either: cargo check --target x86_64-unknown-linux-gnu fails in the aws-lc-sys build script for want of a Linux C cross-compiler. Their allows name the platform reason so the next reader on a non-Linux host does not repeat the investigation.
Deleted, all in files with no target_os gating at all (os.rs, disk_store.rs):
- HealthDiskCtxKey and HealthDiskCtxValue with its private log_success. Note that DiskHealthTracker::log_success is a different method of the same name and is live from cluster/rpc/peer_s3_client.rs and remote_disk.rs — the two have to be told apart by type, not by name.
- LocalDiskWrapper::new_with_health and check_id.
- os.rs file_exists and lock_destination_directory_for_path_access.
Kept with allows: DiskHealthTracker's set_faulty, mark_offline, waiting_count and last_success have test callers in remote_disk.rs, so they only look dead in the lib target. to_disk_error, remove_all and sync_dir_files are asserted by their own files' tests. The reclaim, mmap and path-cache field groups are written but never read back.
Placement follows the same rule as the earlier roots: per-method allows inside impl DiskHealthTracker and impl LocalDisk, since both are mostly live and a block-level allow would be a smaller version of the blanket this issue removes. Struct-level allows are used only where the warning covers that struct's own fields. The three cached_read_env! functions take their allow inside the macro invocation, before the fn line, because the macro forwards $(#[$meta:meta])* onto the generated item.
Verification, four lanes warning-free: default, --tests, --features rio-v2 --tests, --features test-util --tests. cargo nextest run -p rustfs-ecstore 4096 passed; clippy --lib --tests -D warnings clean; make pre-commit exit 0. The Linux lane is not covered locally and is left to CI.
Ref rustfs/backlog#1823 (step 2).
* chore(ecstore): correct two dead_code reasons in the disk root
check_valid_path and reject_symlink_components have no caller at all -
not even a test - so 'asserted by this file's tests' misreads them as
covered. Both are method wrappers over live free functions; say that
instead.
Ref rustfs/backlog#1823.
* perf: reduce spawn_blocking contention in PUT path (~23% throughput gain)
Flame graph profiling identified tokio blocking pool mutex contention
as the #1 bottleneck (17.3% of CPU time). Each spawn_blocking call must
acquire parking_lot::raw_mutex to enqueue work. With 16 concurrent PUTs
× 4 disks × 3+ spawn_blocking per disk, this became a serialization point.
Optimizations applied:
- Merge make_dir_all + file write into single spawn_blocking
- Merge read_file + parse + write + rename into single spawn_blocking
for inline objects (small files)
- Optimize reliable_rename to try rename first, mkdir only on ENOENT
- Optimize remove/remove_std to try remove_file first, EISDIR fallback
- Add encode_inline_small fast path for small objects
- Parallelize bitrot writer creation with join_all
Benchmark (4KiB PUT, 4-disk EC, 16 concurrent, 8 rounds, randomized A/B):
Baseline: ~950 obj/s → Optimized: ~1173 obj/s (+23%)
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: address review comments
- Return old_data_dir for non-inline rename_data path (was incorrectly None)
- Restore delete_all cleanup of PUT temp data on failure paths
- Fix cargo fmt formatting
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* style: apply rustfmt from stable 1.96.0
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: collapse nested if-let chains for clippy compliance
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: address Copilot review comments
- fs.rs: handle macOS EPERM from remove_file on directories
- os.rs: restore NotFound=Ok(()) semantics on first rename attempt
- local.rs: use try-rename-then-mkdir pattern for inline rename_data
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* test: add unit tests for encode_inline_small fast path
* test: fix comment and line length in encode_inline_small tests
* fix: revert reliable_rename and write_all_internal to match original
Restore the original reliable_rename logic (check parent exists, then
rename in loop) and the original write_all_internal (make_dir_all outside
spawn_blocking). The optimization changes caused a CI-only test failure
in capacity_dirty_scope_test that could not be reproduced locally.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: update comment and fix formatting for CI
- Fix macOS/BSD comment to accurately say macOS only
- Fix encode_inline_small test formatting to match rustfmt 1.96.0
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: propagate inline rename errors
* fix: retry rename when parent missing
---------
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
This commit introduces a significant reorganization of the project structure to improve maintainability and clarity.
Key changes include:
- Adjusted the directory layout for a more logical module organization.
- Removed unused crate dependencies, reducing the overall project size and potentially speeding up build times.
- Updated import paths and configuration files to reflect the structural changes.
Zhengchao An