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Barcelona, Spain
May 19-20, 2019
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Monday, May 20 • 11:00 - 11:40
CRUSH-ing the OSD Variance Problem - Tom Byrne, Storage Sysadmin

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Tom will be talking about the challenges of keeping OSD utilization variance under control in a large, rapidly growing cluster.

In the past year he has been managing a large and heavily utilized Ceph cluster that has grown from 1500 OSDs to 5000 OSDs (40PB), while maintaining an average OSD utilization of over 50% throughout the year. This has presented some unique challenges, and Tom will discuss these, along with the positive impact the upmap balancer has had on this process, and general advice for growing near full clusters.
Speakers
avatar for Tom Byrne

Tom Byrne

Storage system administrator, UK Research and Innovation - Science and Technology Facilities Council
The Science and Technology Facilities Council is a world-leading multi-disciplinary science organisation. We provide access to large-scale facilities across a range of physical and life sciences, enabling research and innovation in these areas.   As a storage systems administrator... Read More →

CRUSHing the OSD variance problem pdf
Monday May 20, 2019 11:00 - 11:40 BST
G1
  Track 1