RozoFS
 | |
| Developer(s) | Rozo Systems, SAS. |
|---|---|
| Stable release | 1.5.4 / 17 November 2014 |
| Development status | Active |
| Written in | C and Python |
| Operating system | Linux, Mac OS X, NetBSD, FreeBSD, OpenSolaris |
| Type | Distributed file system |
| License | GNU General Public License v2 |
| Website |
rozosystems |
RozoFS is a free software distributed file system. It comes as a free software, licensed under the GNU GPL v2. RozoFS uses erasure coding for redundancy.[1]
Design
Rozo provides an open source POSIX filesystem, built on top of distributed file system architecture similar to Google File System, Lustre or Ceph. The Rozo specificity lies in the way data is stored. The data to be stored is translated into several chunks using Mojette Transform[2] and distributed across storage devices in such a way that it can be retrieved even if several pieces are unavailable. On the other hand, chunks are meaningless alone.[3] Redundancy schemes based on coding techniques like the one used by RozoFS allow to achieve significant storage savings as compared to simple replication.[4][5]
The file system comprises three components:
- Exports server — (Meta Data Server) manages the location (layout) of chunks (managing capacity load balancing with respect to high availability), file access and namespace (hierarchy). Multiple replicated metadata servers are used to provide failover.The Exports server is a user-space daemon; the metadata are stored synchronously to a usual file system (the underlying file system must support extended attributes).
- Storage servers — (Chunk Server) store the chunks. The Chunk server is also a user-space daemon that relies on the underlying local file system to manage the actual storage.
- Clients — talk to both the exports server and chunk servers and are responsible for data transformation. Clients mount the file system into user-space via FUSE.
See also
- Mojette Transform
- Distributed file system
- List of file systems, the distributed parallel fault-tolerant file system section
- GlusterFS
- Ceph
- BeeGFS
- MooseFS
References
- ↑ ZHANG, Z., DESHPANDE, A., MA, X., THERESKA, E., AND NARAYANAN (May 2010). "Does erasure coding have a role to play in my data center?" (PDF). Tech. Rep. MSR-TR-2010-52 (Microsoft Research).
- ↑ Jeanpierre, Guédon (2009). The Mojette Transform theory and applications. ISTE-WILEY. ISBN 9781848210806.
- ↑ J. P. Guédon , B. Parrein , N. Normand (August 2001). "Secure Distributed Storage based on the Mojette transform". Integrated Computer-Aided Engineering v.8 n.3: 205–214.
- ↑ Weatherspoon, Hakim and Kubiatowicz, John (2002). "Erasure Coding Vs. Replication: A Quantitative Comparison". Revised Papers from the First International Workshop on Peer-to-Peer Systems. IPTPS '01 (Springer-Verlag): 328–338.
- ↑ Rodrigues, Rodrigo and Liskov, Barbara (2005). "High availability in DHTs: erasure coding vs. replication". Proceedings of the 4th international conference on Peer-to-Peer Systems. IPTPS'05 (Springer-Verlag): 226–239. doi:10.1007/11558989_21.
Further reading
- The Register "Could Rozo squeeze into the scale-out NAS-object scalability gap?" article Dec. 2015
- Le Monde Informatique "Rozo passe à l'erasure coding 128 bits pour la v2 de son NAS distribué" article Dec. 2015
- Le Mag IT (TechTarget) "Rozo Systems dévoile la version 2.0 de sa technologie NAS distribuée" article Dec. 2015
- StorageNewsLetter "V2.0 of RozoFS Scale-Out NAS Software" article Dec. 2015
- Silicon.fr "OpenIO, Outpace.io et Rozo: le stockage made in France s’exporte aux US" article Dec. 2015
- The Register "Big Blue boosts Spectrum Scale, polishes the parallel file systems" article Dec. 2015
- ChannelNews "OpenIO et Rozo Systems, les deux pépites françaises du SDS" article Nov. 2015
- The Register "French upstart Rozo: Magic beans will help us become storage giant" article Oct. 2015
- StorageNewsLetter "Start-Up Profile: Rozo Systems in Software-Defined Scale-Out NAS" article Oct. 2015
- Le Monde Informatique "La start-up française Rozo Systems recrute dans la Silicon Valley" article Oct. 2015
External links
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