Cephalocon 2024

Discover the current status and our future plans for the Ceph NVMe-oF gateway. This session will cover the latest developments, highlighting new features focusing on security and performance enhancements. Join us to see what’s next for Ceph NVMe-oF!

You’ve built an amazing new feature for your Ceph use case and want to share it with the world. Now what? You make a pull request! Learn how to prepare and present your new work effectively and successfully within the Ceph community, and understand what you can expect from other contributors who are reviewing it. 
Conversely, you are asked to review a PR, and maybe it needs work. How do you share feedback in a way that it’s heard and handled? Which feedback is worth sharing at which stage of the process? And what are you promising to everybody else when you provide that “Reviewed-by” tag? This talk is for anybody who writes or reviews code (or wants to!) in the Ceph project. Prepared and presented by two of Ceph’s original four tech leads, hear about pitfalls and tips developed submitting PRs, mentoring new developers, and reviewing code from drive-by contributors, Ceph startups, consultancies, and future maintainers!

The Crimson project is an effort to build a replacement ceph-osd well suited to the new reality of low latency, high throughput, persistent memory and NVMe technologies. Built on the Seastar C++ framework, crimson-osd aims to be able to fully exploit modern devices by minimizing latency, CPU overhead, and cross-core communication. This talk will discuss the current state of Crimson going into the Tentacle release.

End to end tracing can help debug latency issues between the RGW and the OSD, giving a complete picture of request flow, but tracing itself has a performance impact on the system. When your production system runs into issues, the last thing you want is to put it under more pressure! In this session we will demonstrate how to use Lua scripting on the RGW to turn opentelemetry based tracing only for some of the incoming requests. Allowing us to focus on the problem without slowing down the entire system.

Remote replication (for block, file, and object workload) is a highly desirable feature for backup, migration, and disaster recovery. Ceph offers a highly capable but non-homogenous user experience for remote replication across different workloads (RBD mirroring, CephFS mirroring, and RGW Multisite). The Squid release of MicroCeph introduces a new set of APIs that expose standardized procedures for remote cluster awareness and remote replication for the mentioned Ceph workloads. This lightning talk will highlight implementation details while demoing RBD remote replication in MicroCeph and plans for CephFs and RGW remote replication roadmap.

As an online sevices provider, storage is a critical part of Proton. With customers all around the world, exchanging e-mails, and backing up their data, the storage stack needs to be accessible 24/7. In this talk we will share the challeges of managing some Ceph clusters to serve those customers. How we manage 100PiB of small objects accross 6'000+ OSDs. Some experiances we tried with OMAP. And what we do to always be online.

Ceph, the words most popular open source software defined storage system, has offered storage efficiency features such as block device compression, object compression and server-side object encryption for a number of releases. However, enabling these features has always come as a trade-off between the additional performance required (in terms of cores/GHz) vs the raw storage cost, ultimately driving users away from these features. In this talk we will walk through several different scenarios where Intel's QAT offload is used to enable these features without significant overhead to primary processing, and still yields greater performance without causing increased cost per GB.