The Ceph Team

The number of people maintaining Ceph and related code is enormous, however we wanted to highlight a few of the leaders among our community in order to direct questions appropriately.

Core Team

Sage Weil Founder / Architect
Josh Durgin RADOS
Yehuda Sadeh RGW
Matt Benjamin RGW
Jason Dillaman RBD
John Spray CephFS / ceph-mgr
Gregory Meno Calamari API
Joao Luis MON


Yan Zheng Linux Kernel Integration
Dan Mick build/test/lab
David Galloway build/test/lab
Mark Nelson Performance / CBT
Sebastien Han ceph-ansible / ceph-docker
Chris Jones ceph-chef / ceph-rust
Alfredo Deza Shaman
Eric Jackson DeepSea (Salt)
Abhishek Lekshmanan Release Manager / Backports
Nathan Cutler Backports
Patrick McGarry Community



Sage Weil

IRC: sage

Sage Weil is the founder and chief architect of Ceph, currently employed at Red Hat. He also was the creator of WebRing, a co-founder of Los Angeles-based hosting company DreamHost, and the founder and CTO of Inktank. Weil earned a Bachelor of Science in computer science from Harvey Mudd College in 2000 and completed his PhD in 2007 at the University of California, Santa Cruz working with Prof. Scott Brandt on consistency protocols, data distribution (CRUSH), and the metadata manager in the Ceph distributed file system. [wikipedia]

Josh Durgin

IRC: jdurgin

Josh is the PTL for core team focusing on RADOS scalability and performance.

Yehuda Sadeh

IRC: yehudasa

Yehuda has been involved in Ceph since 2008, and has been working on various related projects and subsystems. He is the original developer of the RADOS Gateway (RGW) which he currently co-leads as part of his work at Red Hat. He also worked on multiple other Ceph projects, such as the Linux kernel Ceph filesystem module, and RBD. Notable other Ceph modules that he initiated along with Sage Weil are the Linux kernel RBD module, the RADOS object classes, and the cephx authentication. Before joining Ceph, Yehuda worked in various start up companies, where he developed various storage and networking solutions. He holds a Bachelor degree in Communication Systems Engineering from Ben Gurion University, and a Master degree in Computer Engineering from Tel Aviv University.

Matt Benjamin

IRC: mattbenjamin

Matt Benjamin has been working professionally with Linux and open source software since 1994. He is a contributor to a variety of open source software packages and tools. He co-founded The Linux Box corportation in Ann Arbor, mi, has held a developer position with Comshare, Inc, and has also been a consultant with Integrated Micro Systems. Matt holds a master’s degree from the University of Michigan, and a bachelor’s degree (Summa Cum Laude and Phi Beta Kappa) from the University of Missouri.

Jason Dillaman

IRC: jdillaman

Jason Dillaman is a software engineer at Red Hat, has been an active contributor to the Ceph project for over two years, and has been developing distributed systems for over 12 years. Jason currently acts as the project technical lead for the RADOS Block Device (RBD) module within Ceph. He holds a Bachelor’s and Master’s degree in Computer Science from the University of Michigan.

John Spray

IRC: jcsp

John is a Principal Software Engineer at Red Hat. Currently the tech lead for CephFS, he has spent almost a decade working on distributed systems in storage and networking. John is based in Edinburgh, Scotland.

Gregory Meno

IRC: gmeno

Gregory is a manager, Software Engineering and technical lead on the Calamari API. He has been working in distributed storage for the past three years. Gregory is based in San Diego, CA

Joao Luis

IRC: joao

Joao has been working on Ceph for a few years now, from the comfort of his home in mild-weathered Lisbon, Portugal. Since an early age found cephalopods to be enjoyable, and frequently makes meals out of them. Most of his time is spent trying to break the Monitors while sipping some not-at-all-obnoxious drink. Currently working at SUSE because the fluffy green chameleon mascot they give out at events really ties the desk together.

Yan Zheng

IRC: yanzheng

Yan, Zheng is a software engineer at Red Hat, has been involved with CephFS since 2012. Currently the maintainer of CephFS linux kernel driver. Before working on CephFS, He was core developer of Btrfs. Zheng is based in Chengdu, China

Dan Mick

IRC: dmick

Dan joined the Ceph project in January 2012, after many years at Sun Microsystems. He’s worked on several aspects of the Ceph system, including the Python CLI ‘ceph’ and rbd, as well as lots of support and testing code (teuthology, downburst). He has lots of experience with the various testing labs used by both upstream and downstream Red Hat development and QA organizations, and the infrastructure that allows access to them, including a local Ceph cluster used to hold test result logs. Dan earned a BS and MS in electrical engineering from the University of Dayton in Ohio, and is currently based in Los Angeles.

David Galloway

IRC: dgalloway

David started his IT career in 2010 as a Desktop Systems Specialist for Red Hat’s internal employee helpdesk. He became a Lab Admin for the Red Hat Engineering labs in Raleigh in 2013 and was promoted to Systems Administrator in 2015. David transferred to work on the Ceph upstream and downstream test labs full-time in early 2016 and is responsible for the daily care and feeding of the labs, applications, and tooling used for Ceph testing. He also manages the infrastructure that runs all of Ceph’s public-facing sites.

Mark Nelson

IRC: nhm

Mark joined the Ceph team in January 2012 and has 12 years of experience in distributed systems, HPC, and bioinformatics. Mark works on Ceph performance analysis and is the primary author of the Ceph Benchmarking Toolkit. He runs the weekly Ceph performance meeting and is currently focused on research and development of Ceph’s next-generation object store.

Sebastien Han

IRC: leseb

Sebastien Han currently serves as a Principal Software Engineer, Storage Architect for Red Hat. He has been involved with OpenStack and Ceph since 2011 and has built a strong expertise around them. Curious and passionate, he loves working on bleeding edge technologies and identifying opportunities where OpenStack and Ceph can enhance the user experience. In 2013, he began working with containers as well and ultimately implemented containerized Docker Ceph services. Now on a daily basis, he rotates between Ceph, OpenStack, and Docker in an effort to strengthen the integration between all three. From time to time, he attends various events where he evangelizes these technologies and their usage, while devoting his copious spare time to blogging. See But alas, this is just the beginning :).

Chris Jones

IRC: cloudm2

Chris is a Technical Lead at Bloomberg for Cloud Storage, including Ceph Object and Block storage. He maintains Ceph-Chef Chef Cookbooks and Ceph-Rust (Official Rust SDK for Ceph). Chris also maintains other opensource projects for Enterprise storage including aws-sdk-rust and s3lsio located at

Alfredo Deza

IRC: alfredodeza

Alfredo has been involved with the Ceph project since 2013 and has worked on several tooling like ceph-deploy, radosgw-agent, and ceph-disk. He currently works on ceph-ansible, ceph-docker, and oversees the new continuous integration infrastructure for Ceph and its projects.

Eric Jackson

IRC: ericjack

Eric is a developer at SUSE. He has been primarily a sysadmin for software development focusing on automation and integration for telecoms, cable and startups. He spends his free time with family, gaming and binging on the occasional anime.

Abhishek Lekshmanan

Abhishek is a Software Developer at SUSE. He has been involved with the Ceph project since 2014 and has worked in the backports team, documentation & RGW. He currently tries to rotate his time between RGW, deployment & helping the release team coordinate the releases

Nathan Cutler

IRC: smithfarm

Nathan Cutler is a software engineer at SUSE, where he has been working in distributed storage development since 2015. Before that he worked in various capacities both in and out of IT (systems administrator, database programmer, Czech-English translator, and day laborer). He holds a Bachelor’s Degree in History from the University of Florida.

Patrick McGarry

IRC: scuttlemonkey

Patrick McGarry is currently incarnated as Director of Ceph Community at Red Hat, working to spread the Ceph gospel. An experienced community manager, gamer, mischief maker, and all-around geek, Patrick spent five years writing and managing Slashdot under the nomme du keyboard ‘scuttlemonkey’. Patrick enthusiastically helps companies understand and adopt Open Source ideals and continues to be a strong advocate of FOSS on the desktop and in the enterprise. He has strong feelings about tomatoes, longs for his deep, dark cave, and still hates writing these bios.