applied-series: [RFC proxmox{,-backup} 0/4] fix #6841: implement request rate limits for all methods

["Fabian Grünbichler" <f.gruenbichler@proxmox.com>]

On June 30, 2026 4:28 pm, Christian Ebner wrote:
> Currently request performed by the s3 client to the backend can only
> be limited by bandwidth limits or on a per-instance based PUT rate
> limit. Providers might however enforce limits on the number of requests
> per second, non of which can currently be enforced.
> 
> Therefore this patch series implements request limits, using a memory
> mapped shared request limiter, similar to what is used to enforce
> bandwidth limits. Since providers might have different limits as e.g.
> the soft limits by AWS S3 mentioned in [0], allow to set different limits
> between `active` and `passive` requests methods.
> 
> Sending as RFC as a bit unsure if we should make this configurable
> as currently the case or rather trying to dynamically adapt the request
> rate in case of requests failing with the respective HTTP status codes.
> The latter has the downside that different providers may not clearly
> signal when a rate limit is being enforced and/or have different status
> codes to do so. Therefore the current approach allows to hard code the
> limits.
> 
> Currently the rate limit is not yet updated on config changes via API,
> only on s3 client instantiation.
> 
> [1] https://docs.aws.amazon.com/AmazonS3/latest/userguide/optimizing-performance.html
> 
> Reference to the issue in bugzilla: https://bugzilla.proxmox.com/show_bug.cgi?id=6841
> 
> 
> proxmox:
> 
> Christian Ebner (2):
>   fix #6841: allow to set active/passive request rate limits
>   s3-client: add 429 HTTP status code as retryable
> 
>  proxmox-s3-client/src/api_types.rs |  8 +++-
>  proxmox-s3-client/src/client.rs    | 66 ++++++++++++++++++++++++++----
>  2 files changed, 66 insertions(+), 8 deletions(-)
> 
> 
> proxmox-backup:
> 
> Christian Ebner (2):
>   s3: config: update or delete active/passive request limit options
>   ui: expose request rate limit config options for S3 endpoints
> 
>  src/api2/config/s3.rs      | 16 ++++++++++++++++
>  www/window/S3ClientEdit.js | 14 ++++++++++++++
>  2 files changed, 30 insertions(+)
> 
> 
> Summary over all repositories:
>   4 files changed, 96 insertions(+), 8 deletions(-)
> 
> -- 
> Generated by murpp 0.11.0
> 
> 
> 
> 
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