September 13-16, 2022
Dublin, Ireland + Virtual
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Wednesday, September 14 • 17:30 - 18:10
Introducing the libblkio High-performance Block I/O API - Stefan Hajnoczi & Alberto Faria, Red Hat

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Applications are increasingly integrating high-performance I/O interfaces such as Linux io_uring, userspace device drivers, and vhost-user device support. The effort required to add each of these low-level interfaces into an application is relatively high. libblkio provides a single open source API for efficiently accessing block devices and eliminates the need to write custom code for each one. Designed to work on bare metal, inside containers, and in virtual machines, libblkio enables applications to run in each of these environments without rewriting code. Blocking, event-driven, and polling mode are supported and give applications the choice of I/O model, making it easy to integrate libblkio into existing applications. The new libblkio QEMU block driver and fio ioengine allow virtual machines and benchmarking workloads to take advantage of libblkio today. We will discuss the libblkio API design, available drivers, and roadmap so that more applications can benefit from libblkio.

avatar for Stefan Hajnoczi

Stefan Hajnoczi

Senior Principal Software Engineer, Red Hat
Stefan works on QEMU and Linux in Red Hat's Virtualization team with a focus on storage, VIRTIO, and tracing. Recent projects include libblkio, virtiofs, storage performance optimization for NVMe drives, and out-of-process device emulation. Stefan has been active in the QEMU community... Read More →

Alberto Faria

Software Engineer, Red Hat
Software Engineer @ Red Hat

Wednesday September 14, 2022 17:30 - 18:10 IST
Liffey A (Level 1)