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

[Paul Moore <paul@paul-moore.com>]

On Thu, Aug 11, 2022 at 9:51 PM Jens Axboe <axboe@kernel.dk> wrote:
> On 8/11/22 6:43 PM, Casey Schaufler wrote:
> > 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.
>
> It's only plumbed up for nvme. Just use qemu with an nvme device?
>
> -drive id=drv1,if=none,file=nvme.img,aio=io_uring,cache.direct=on,discard=on \
> -device nvme,drive=drv1,serial=blah2
>
> Paul was pondering wiring up a no-op kind of thing for null, though.

Yep, I started working on that earlier this week, but I've gotten
pulled back into the SCTP stuff to try and sort out something odd.

Casey, what I have isn't tested, but I'll toss it into my next kernel
build to make sure it at least doesn't crash on boot and if it looks
good I'll send it to you off-list.

-- 
paul-moore.com