Re: Call for GSoC and Outreachy project ideas for summer 2023

[Stefan Hajnoczi]

On Tue, 7 Feb 2023 at 05:30, Alberto Faria <afaria@redhat.com> wrote:
>
> On Tue, Feb 7, 2023 at 10:23 AM Alberto Faria <afaria@redhat.com> wrote:
> > On Mon, Feb 6, 2023 at 9:22 PM Stefan Hajnoczi <stefanha@gmail.com> wrote:
> > > Great that you're interesting, Alberto! Both sound feasible. I would
> > > like to co-mentor the zoned storage project or can at least commit to
> > > being available to help because zoned storage is currently on my mind
> > > anyway :).
> >
> > Perfect, I'll have time to co-mentor one project, but probably not
> > two, so let's leave the NVMe driver project aside for now. If anyone
> > wants to take that one over, though, go for it.
> >
> > > Do you want to write up one or both of them using the project template
> > > below? You can use the other project ideas as a reference for how much
> > > detail to include: https://wiki.qemu.org/Google_Summer_of_Code_2023
> >
> > I feel like this is closer to a 175 hour project than a 350 hour one,
> > but I'm not entirely sure.
> >
> >   === Zoned device support for libblkio ===
> >
> >    '''Summary:''' Add support for zoned block devices to the libblkio 
> > library.
> >
> >    Zoned block devices are special kinds of disks that are split into 
> > several
> >    regions called zones, where each zone may only be written
> > sequentially and data
> >    can't be updated without resetting the entire zone.
> >
> >    libblkio is a library that provides an API for efficiently accessing 
> > block
> >    devices using modern high-performance block I/O interfaces like
> > Linux io_uring.
> >
> >    The goal is to extend libblkio so users can use it to access zoned 
> > devices
> >    properly. This will require adding support for more request types, 
> > expanding
> >    its API to expose additional metadata about the device, and making the
> >    appropriate changes to each libblkio "driver".
> >
> >    This is important for QEMU since it will soon support zoned devices too 
> > and
> >    several of its BlockDrivers rely on libblkio. In particular, this
> > project would
> >    enable QEMU to access zoned vhost-user-blk and vhost-vdpa-blk devices.
>
> Also, a stretch/bonus goal could be to make the necessary changes to
> QEMU to actually make use of libblkio's zoned device support.

Great, I have added it to the wiki and included a list of tasks:
https://wiki.qemu.org/Internships/ProjectIdeas/LibblkioZonedStorage

Feel free to edit it.

I think this project could just as easily be 350 hours, but I'm happy
to mentor a 175 hour project with a more modest scope.

Stefan