The CRUSH algorithm determines how to store and retrieve data by computing data storage locations. CRUSH empowers Ceph clients to communicate with OSDs directly rather than through a centralized server or broker. With an algorithmically determined method of storing and retrieving data, Ceph avoids a single point of failure, a performance bottleneck, and a physical limit to its scalability. CRUSH requires a map of your cluster, and uses the CRUSH map to pseudo-randomly store and retrieve data in OSDs with a uniform distribution of data across the cluster.

This project aims at creating graphs of the crush map, for better visualization of the Ceph cluster.

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This project is part of:

Hack Week 11

Activity

  • about 5 years ago: wanglh liked Ceph crushmap visualization
  • about 5 years ago: osynge joined Ceph crushmap visualization
  • about 5 years ago: qakapil started Ceph crushmap visualization
  • about 5 years ago: osynge liked Ceph crushmap visualization
  • about 5 years ago: qakapil originated Ceph crushmap visualization
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    Comments

    • osynge
      about 5 years ago by osynge | Reply

      This will be super useful for the ceph team, also http://www.graphviz.org/ is very cool and easy for making graphs.

    • osynge
      about 5 years ago by osynge | Reply

      I asked if anyone had made a nice crushmap visualisation tool on ceph irc and a guy with email address eric.mourgaya@arkea.com offered to help. He works for a company providing ceph support and is FULL of ideas, based in France and seems very friendly.

    • qakapil
      about 5 years ago by qakapil | Reply

      Thanks Owen for this idea

    • osynge
      about 5 years ago by osynge | Reply

      Kenneth.Waegeman@UGent.be has sent us their production crushmap with tiering and erasure code enabled to help get his project going, hoping for more to come in in the next days.

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