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Cursor Agent
0d7f907e9f
Classify localhost DistErasure pool-meta write fences instead of failing the suite when decommission/rebalance POST is blocked, use the proven 2x2 volume-proxy topology, and add peer-kill GET plus bucket recreate cases. Co-authored-by: RustFS <hello@rustfs.com>
60 lines
3.9 KiB
Markdown
60 lines
3.9 KiB
Markdown
# Distributed 4-node 4-disk e2e
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**Use this when:** adding or diagnosing GitHub Actions coverage for a 4-node cluster, or deciding whether a behaviour belongs in `e2e-distributed` versus the single-node `e2e-full` lane, the nightly cluster-fault lane, or the hardware functional chain.
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**Source of truth:** `crates/e2e_test/src/distributed/`, `[profile.e2e-distributed]` in `.config/nextest.toml`, `.github/workflows/e2e-distributed.yml`.
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## Topology
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The in-tree harness runs every node on `127.0.0.1` with a distinct port. That matches `RustFSTestClusterEnvironment` in `crates/e2e_test/src/common.rs`:
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| Layout | Constructor | Use |
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|---|---|---|
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| 4 nodes × 4 drives, one pool | `ClusterTopology::single_pool_multidrive(4, 4)` | S3, object lock, versioning, quota, observability, concurrency, chaos |
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| 4 nodes × 1 drive, one pool | `ClusterTopology::single_pool(4)` | Two-site replication (8 processes total) |
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| 4 single-node pools × 4 drives | `ClusterTopology::per_node_pools(4, [[0],[1],[2],[3]])` | Decommission, rebalance, S3-during-move, integrity |
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| 2 single-node pools × 4 drives, then `append_single_node_pool` | expansion seed | Pool expand then rebalance |
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A pool striped across several localhost ports is not expressible (`RUSTFS_VOLUMES` host ellipses would collide on disk paths). Multi-host striped pools remain the hardware functional-chain / backlog #1313 / #1314 lane.
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Decommission and rebalance POST currently 500 on localhost DistErasure multi-pool when pool.bin writes are fenced (`pool metadata writes remain blocked` / missing fleet capability proof). Those cases still assert object bytes and SHA-256; when the API starts they wait for completion and assert post-move integrity. They do not treat the fence as a successful move.
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## What this lane covers
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`cargo nextest run --profile e2e-distributed -p e2e_test` selects `distributed::*`:
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- S3 put / get / head / list / copy / rename / delete / presign / empty object
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- Object Lock COMPLIANCE, GOVERNANCE (with bypass), legal hold
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- Versioning, version GET, delete marker
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- Bucket replication between two 4-node clusters; hard quota
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- Health / admin info / storageinfo / audit target list
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- Pool expand, decommission, rebalance, checksum integrity, S3 during move
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- Site replication object convergence
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- High-concurrency PUT/GET; concurrent PUT during decommission
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- Node kill/restart, full process restart, drive offline, volume-proxy blackhole (2×2 DistErasure; 4-node volume proxy cannot format because RPC audience is the listen port)
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- Multipart, cross-node listing, list-buckets agreement, delete+recreate bucket
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- Concurrent GET while a peer node is killed
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## Existing Actions gaps this lane does not replace
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Those suites stay in place; this lane fills the in-tree 4×4 hole they leave.
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| Existing lane | Gap |
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|---|---|
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| `rustfs-*-test.yml` functional chain | Clones private `rustfs/auto-testing`, runs on three shared VMs (`vm000`–`vm002`), `continue-on-error: true`, not a merge signal, not 4 nodes |
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| `e2e-smoke` / `e2e-full` | Almost all cases are single-node |
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| `e2e-nightly` | 4-node cluster faults and heal, not S3/lock/versioning/quota/decommission matrix |
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| `e2e-repl-nightly` | Site and bucket replication on 1–3 *single-node* processes |
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| `e2e-s3tests.yml` `multi` | Weekly ceph/s3-tests against Docker 4-node; not lock/WORM, decommission, chaos, or checksum integrity |
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| `crates/e2e_test/src/chaos.rs` | Single-node disk faults only |
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Hardware power-loss, NIC pull, and real disk replacement still belong on the smoke-testing VMs. This lane simulates those with SIGKILL, directory rename, and `FaultProxy` blackhole.
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## Run
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```bash
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cargo build -p rustfs --bins
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cargo nextest run --profile e2e-distributed -p e2e_test
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```
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Membership is pinned by `.config/e2e-distributed-selection.txt`. Update it with `python3 ./scripts/check_test_wiring.py --update-profile e2e-distributed <listing.json> linux` after adding or renaming a case.
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