[PATCH blktests v2 2/2] nvme/047: add test for uring-passthrough

[Sagi Grimberg]

> User can communicate to NVMe char device (/dev/ngXnY) using the
> uring-passthrough interface. This test exercises some of these
> communication pathways, using the 'io_uring_cmd' ioengine of fio.
> 
> Signed-off-by: Kanchan Joshi <joshi.k at samsung.com>
> ---
>   tests/nvme/047     | 43 +++++++++++++++++++++++++++++++++++++++++++
>   tests/nvme/047.out |  2 ++
>   2 files changed, 45 insertions(+)
>   create mode 100755 tests/nvme/047
>   create mode 100644 tests/nvme/047.out
> 
> diff --git a/tests/nvme/047 b/tests/nvme/047
> new file mode 100755
> index 0000000..ea9b001
> --- /dev/null
> +++ b/tests/nvme/047
> @@ -0,0 +1,43 @@
> +#!/bin/bash
> +# SPDX-License-Identifier: GPL-3.0+
> +# Copyright (C) 2023 Kanchan Joshi, Samsung Electronics
> +# Test exercising uring passthrough IO on nvme char device
> +
> +. tests/nvme/rc
> +
> +DESCRIPTION="basic test for uring-passthrough I/O on /dev/ngX"
> +QUICK=1
> +
> +requires() {
> +	_nvme_requires
> +	_have_kver 6 1
> +	_have_fio_ver 3 33
> +}
> +
> +test_device() {
> +	echo "Running ${TEST_NAME}"
> +	local ngdev=${TEST_DEV/nvme/ng}
> +	local common_args=(
> +		--size=1M
> +		--filename="$ngdev"
> +		--bs=4k
> +		--rw=randread

Maybe while you're at it expand a bit to:
--rw=randrw
--bsrange=512-128k,512-128k

> +		--numjobs=1
> +		--iodepth=16
> +		--name=randread
> +		--ioengine=io_uring_cmd
> +		--cmd_type=nvme
> +		--time_based
> +		--runtime=2
> +	)
> +	#plain read test
> +	_run_fio "${common_args[@]}"
> +
> +	#read with iopoll
> +	_run_fio "${common_args[@]}" --hipri
> +
> +	#read with fixedbufs
> +	_run_fio "${common_args[@]}" --fixedbufs
> +
> +	echo "Test complete"
> +}
> diff --git a/tests/nvme/047.out b/tests/nvme/047.out
> new file mode 100644
> index 0000000..915d0a2
> --- /dev/null
> +++ b/tests/nvme/047.out
> @@ -0,0 +1,2 @@
> +Running nvme/047
> +Test complete