---
title: "Known limitations"
description: "Current compatibility, validation, deployment, and operational limits that must remain visible until evidence closes them."
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.myswift.rs/llms.txt
> Use this file to discover all available pages before exploring further.

# Known limitations

This page is the safe planning boundary, not a backlog disguised as a release
note. If a required capability is missing or not accepted here, treat the
deployment as blocked for that use case.

## Acceptance state

- G6 is **GREEN** on source `17adf0b`: W068 replication 147 plus W069 EC 32
  merge exactly once in W070, with all strict invariants true.
- The historical W015 failure and the W019/W020 intermediate proofs remain
  diagnostic history; they are superseded for gate status by W070.
- G7 is **NOT ACCEPTED** and G8 is blocked.
- Production readiness is **NO-GO**. The G6-accepted artifact is not a
  production binary and production `:8080` remains on `ab5cb95c…`.
- The candidate artifact bundle carries auxiliary component source, but the
  offline pass did not build new Linux binaries for swift-console,
  swift-deploy-rs, cosbench-rs, or autocos because the cache lacked `axum`.

## Compatibility limits

| Area | Limit |
|---|---|
| Swift API | implemented/tested subset only; not every standard filter or edge case is accepted |
| Paste pipeline | no arbitrary Python or third-party dynamic plugin loading |
| S3 | the historical 57-case dual-oracle is not GREEN; official s3api/s3tests gates remain distinct |
| EC | Linux + liberasurecode + `ec` build required; W069 and W070 prove the frozen EC lane and exact merged-179 G6 result for `17adf0b` |
| sharding/reconciliation | frozen probe semantics are G6-accepted; broader production behavior remains subject to later gates and rollout evidence |
| multi-cluster container sync | no production soak claim |
| multi-primary automatic shrink | not a production-accepted product path |
| physical cold tier and local IAM helpers | library/helper presence is not a wired production feature claim |

## Runtime limits

The candidate contains async serve and bounded runtime primitives, but G3 must
still prove every relevant request class avoids legacy sync/block-in-place
fallbacks, and G7 must test idle connections, slow bodies, cancellation,
fairness, bounded memory, shutdown, and durability under load.

## Deployment limits

`swift-deploy-rs` implements a bounded audited subset of the pinned Swift
Ansible v3 bundle. Unknown syntax/modules fail closed. It is not a promise that
every upstream Ansible role, arbitrary inventory, distribution, or operator
overlay is supported.

## Performance limits

Published measurements are historical, route-labelled evidence. No current
number is a formal G8 production result. Same-host, HAProxy, noisy-host, and
direct-proxy measurements answer different questions and must not be merged.

## Documentation rule

The [current status page](/status-2026-08-31) overrides older dated narratives.
Historical pages remain useful as incident and design evidence, but they do not
promote the current candidate.

Source: https://docs.myswift.rs/known-limitations/index.mdx