On Tue, Feb 7, 2023 at 10:23 AM Alberto Faria <afaria@xxxxxxxxxx> wrote: > On Mon, Feb 6, 2023 at 9:22 PM Stefan Hajnoczi <stefanha@xxxxxxxxx> 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. > '''Links:''' > * https://zonedstorage.io/ > * https://libblkio.gitlab.io/libblkio/ > * https://gitlab.com/libblkio/libblkio/-/issues/44 > > '''Details:''' > * Project size: 175 hours > * Skill level: intermediate > * Language: Rust, C > * Mentor: Alberto Faria <afaria@xxxxxxxxxx>, Stefan Hajnoczi > <stefanha@xxxxxxxxx> > * Suggested by: Alberto Faria <afaria@xxxxxxxxxx> > > Alberto
