Re: Fwd: fio: ruh info failed

[Vincent Fu <vincentfu@gmail.com>]

On Fri, Sep 26, 2025 at 5:43 PM Jens Axboe <axboe@kernel.dk> wrote:
>
> On 9/26/25 1:30 PM, Shivashekar Murali Shankar wrote:
> > Hi,
> >
> > I am currently testing fio with io_uring on an FDP-capable drive, but
> > I see failures such as “fio: ruh info failed” when trying to run FDP
> > job files. This is run on an XFS file system on a mounted drive. Do we
> > have support for this?
> >
> > Below is my fio job file:
> >
> > [global]
> > ioengine=io_uring
> > direct=1
> > bs=4k
> > iodepth=32
> > rw=write
> > numjobs=1
> > group_reporting
> > fdp=1
> >
> > [largedata]
> > filename=/mnt/nvme/largedata
> > size=30G
> > fdp_pli=1
>

FDP support is currently only available for NVMe character devices.
See the example here:

https://github.com/axboe/fio/blob/master/examples/uring-cmd-fdp.fio

> It's generally a good idea to CC the folks that worked on this, and
> probably use the fio list rather than the io_uring list...
>
> Adding them.
>
> --
> Jens Axboe
>