Paris, 5th December 2013 : OpenStack in Action 4! organized by eNovance, brings together members of the OpenStack community.

1. Ceph: de factor storage backend for
OpenStack
OpenStack in Action 4! Paris, 5th December

2. Whoami
💥 Sébas9en Han
💥 French Cloud Engineer working for eNovance
💥 Daily job focused on Ceph and OpenStack
💥 Blogger
Personal blog: hGp://www.sebas9en-­‐han.fr/blog/
Company blog: hGp://techs.enovance.com/
Worldwide offices coverage
We design, build and run clouds – any9me -­‐ anywhere

3. Ceph
What is it?

4. The project
➜ Unified distributed storage system
➜ Started in 2006 as a PhD by Sage Weil
➜ Open source under LGPL license
➜ Written in C++
➜ Build the future of storage on commodity hardware

5. Key features
➜ Self managing/healing
➜ Self balancing
➜ Painless scaling
➜ Data placement with CRUSH

6. Controlled replica9on under scalable hashing
➜ Pseudo-random placement algorithm
➜ Statistically uniform distribution
➜ Rule-based configuration

7. Overview

8. State of the integra9on
Including best Havana’s addi9ons

9. Why is Ceph so good?
It unifies OpenStack components

10. Havana’s addi9ons
➜ Complete refactor of the Cinder driver:
• Librados and librbd usage
• Flatten volumes created from snapshots
• Clone depth
➜ Cinder backup with a Ceph backend:
•
•
•
•
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backing up within the same Ceph pool (not recommended)
backing up between different Ceph pools
backing up between different Ceph clusters
Support RBD stripes
Differentials
➜ Nova Libvirt_image_type = rbd
• Directly boot all the VMs in Ceph
• Volume QoS

11. Today’s Havana integra9on

12. Is Havana the perfect stack?
…

13. Well, almost…

14. What’s missing?
➜ Direct URL download for Nova
• Already on the pipe, probably for 2013.2.1
➜ Nova’s snapshots integration
• Ceph snapshot
https://github.com/jdurgin/nova/commits/havana-ephemeral-rbd

15. Icehouse and beyond
Future

16. Tomorrow’s integra9on

17. Icehouse roadmap
➜ Implement “bricks” for RBD
➜ Re-implement snapshotting function to use RBD snapshot
➜ RBD on Nova bare metal
➜ Volume migration support
➜ RBD stripes support
« J » poten9al roadmap
➜ Manila support

18. Ceph, what’s coming up?
Roadmap

19. Firefly
➜ Tiering - cache pool overlay
➜ Erasure code
➜ Ceph OSD ZFS
➜ Full support of OpenStack Icehouse

20. Many thanks!
Questions?
Contact: sebastien@enovance.com
Twitter: @sebastien_han
IRC: leseb