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July 11 - 13, 2022 | Portland, Oregon + Virtual
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Wednesday, July 13 • 12:15pm - 12:55pm
Stretch Clusters in Ceph: Algorithms, Use Cases, and Improvements - Gregory Farnum, Red Hat

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While Ceph is designed for use in a single data center, users have deployed “stretch” clusters across multiple data centers for many years, and deploying Ceph to back Red Hat’s OpenShift Data Foundation product required us to support that workload explicitly and well — in particular, in the face of netsplits. At FOSDEM 2020, I reported on improvements to our monitor leader elections and plans for the OSD peering process to keep data available without breaking our data integrity guarantees. This talk presents the initial completed version of that work from an algorithm and programmer perspective: new monitor election algorithms and OSD peering changes to support a 2-site cluster, which is all present in the Pacific point releases. Lastly, we’ll discuss what still needs to be done to expand stretch functionality into more environments and use cases.

Speakers
avatar for Gregory Farnum

Gregory Farnum

Principal Software Engineer, Red Hat
Greg Farnum has been in the core Ceph development group since 2009. Now a Red Hat employee, Greg has done major work on all components of the Ceph ecosystem, previously served as the CephFS tech lead, and is moving from an individual contributor to team management role.


Wednesday July 13, 2022 12:15pm - 12:55pm PDT
Regency Ballroom C