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  1. OpenShift Storage
  2. STOR-2724

[Upstream Cycle] Beta - scheduler and autoscaler to respect volume attach limits

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    • Upstream: design scheduler and autoscaler to respect volume attach limits
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      Epic Goal*

      Move the feature towards beta upstream

      https://github.com/kubernetes/enhancements/issues/5030

      Why is this important? (mandatory)

      When a new node appears in a cluster, the Kubernetes scheduler may not yet know what CSI drivers will be running there and what are their attach limits.  It assumes that the node has infinite attach limit  and that all CSI drivers will run on that node, and can therefore schedule more pods with volume than the node can handle.

      Those pods need to be removed manually by user. Red Hat's suggestion is solutions/7088407 (i.e. call support). 

       
      Scenarios (mandatory) 

      Dependencies (internal and external) (mandatory)

      Contributing Teams(and contacts) (mandatory) 

      • Development - STOR

      Acceptance Criteria (optional)

      Work towards beta upstream

      Drawbacks or Risk (optional)

      Done - Checklist (mandatory)

      The following points apply to all epics and are what the OpenShift team believes are the minimum set of criteria that epics should meet for us to consider them potentially shippable. We request that epic owners modify this list to reflect the work to be completed in order to produce something that is potentially shippable.

      • CI Testing -  Basic e2e automationTests are merged and completing successfully
      • Documentation - Content development is complete.
      • QE - Test scenarios are written and executed successfully.
      • Technical Enablement - Slides are complete (if requested by PLM)
      • Engineering Stories Merged
      • All associated work items with the Epic are closed
      • Epic status should be "Release Pending" 

              hekumar@redhat.com Hemant Kumar
              rhn-engineering-jsafrane Jan Safranek
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              Wei Duan Wei Duan
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                Created:
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                  Estimated:
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                  Remaining:
                  Remaining Estimate - 3 weeks
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