Re: [PATCH liburing v2 0/5] Add basic test for nvme uring passthrough commands

[Kanchan Joshi <joshi.k@samsung.com>]

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On Tue, Jul 26, 2022 at 04:22:25PM +0530, Ankit Kumar wrote:
>Hi Jens,
>
>This patchset adds a way to test NVMe uring passthrough commands with
>nvme-ns character device. The uring passthrough was introduced with 5.19
>io_uring.
>
>To send nvme uring passthrough commands we require helpers to fetch NVMe
>char device (/dev/ngXnY) specific fields such as namespace id, lba size etc.
>
>How to run:
>./test/io_uring_passthrough.t /dev/ng0n1
>
>The test covers write/read with verify for sqthread poll, vectored / nonvectored
>and fixed IO buffers, which can be extended in future. As of now iopoll is not
>supported for passthrough commands, there is a test for such case.

./test/io_uring_passthrough.t /dev/ng0n1
doesn't support polled IO                 

Not sure if iopoll test is bit premature, as above message will keep
coming until this is wired up in kernel-side.
Perhaps this is fine to test as in initial stages graceful no-support
error code was not coming from kernel. The above confirms that
kernel bails out fine now.

Things ran fine for me, so
Tested-by: Kanchan Joshi <joshi.k@samsung.com>

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