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

[Casey Schaufler <casey@schaufler-ca.com>]

On 7/19/2022 6:52 AM, Ankit Kumar wrote:
> This patchset adds test/io_uring_passthrough.c to submit uring passthrough
> commands to 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.

There wouldn't be a way to run these tests using a more general
configuration, would there? I spent way too much time trying to
coax my systems into pretending it has this device.

>
> How to run:
> ./test/io_uring_passthrough.t /dev/ng0n1
>
> This covers basic write/read with verify for sqthread poll,
> vectored / nonvectored and fixed IO buffers, which can be easily extended
> in future.
>
> Ankit Kumar (5):
>   configure: check for nvme uring command support
>   io_uring.h: sync sqe entry with 5.20 io_uring
>   nvme: add nvme opcodes, structures and helper functions
>   test: add io_uring passthrough test
>   test/io_uring_passthrough: add test case for poll IO
>
>  configure                       |  20 ++
>  src/include/liburing/io_uring.h |  17 +-
>  test/Makefile                   |   1 +
>  test/io_uring_passthrough.c     | 395 ++++++++++++++++++++++++++++++++
>  test/nvme.h                     | 168 ++++++++++++++
>  5 files changed, 599 insertions(+), 2 deletions(-)
>  create mode 100644 test/io_uring_passthrough.c
>  create mode 100644 test/nvme.h
>