Summary

• Bump github.com/minio/minio-go/v7 from v7.1.0 to v7.2.0 (adds
  S3-over-RDMA dispatch via Options.EnableRDMA and
  {Put,Get}ObjectOptions.RDMABuffer).
• New --rdma string flag on the I/O commands (visible on
  warp put / warp get / anything inheriting ioFlags).
  • --rdma=cpu allocates a per-op host buffer.
  • --rdma=gpu allocates a CUDA device buffer (requires
    -tags=rdma build, links libcudart).
  • Empty (default) disables RDMA — current HTTP path is unchanged.
• Per-op buffer management factored into pkg/bench/rdmabuf.go. GPU
  helpers are gated by the existing rdma build tag
  (rdmabuf_rdma.go vs rdmabuf_stub.go); no separate cuda tag.

Motivation

Enables warp-driven validation of MinIO AIStor's GPU-Direct RDMA
S3 path end-to-end (both host-pinned and GPU memory), against a
cluster running the matching libp2p_rdma.so internode credit
fix that landed alongside.

How to test

# HTTP (unchanged default behaviour)
go build .
./warp put --host h1:9000 --access-key K --secret-key S --obj.size 4MiB

# RDMA over host memory
go build .
./warp put --host h1:9000 ... --rdma=cpu      # errors with the stub
                                              # if not built with -tags=rdma
go build -tags=rdma .
./warp put --host h1:9000 ... --rdma=cpu

# GPU-Direct RDMA (needs CUDA + libminiocpp on link path)
go build -tags=rdma .
./warp put --host h1:9000 ... --rdma=gpu
./warp get --host h1:9000 ... --rdma=gpu

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist

• go build ./... passes (default build path)
• go build -tags=rdma . documented (requires libcudart +
  libminiocpp.so on the link path)
• No change to default (HTTP) PUT/GET paths
• minio-go bumped to v7.2.0 via go mod tidy