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  1. OpenShift Container Platform (OCP) Strategy
  2. OCPSTRAT-1094

Configure the maximum number of snapshots per volume with vSphere CSI

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      Feature Overview (aka. Goal Summary)

       

      Currently the maximum number of snapshots per volume in vSphere CSI is set to 3 and cannot be configured. Customers find this default limit too low and are asking us to make this setting configurable.

      Maximum number of snapshot is 32 per volume

      Goals (aka. expected user outcomes)

      Customers can override the default (three) value and set it to a custom value.

      Make sure we document (or link) the VMWare recommendations in terms of performances.

      https://docs.vmware.com/en/VMware-vSphere-Container-Storage-Plug-in/3.0/vmware-vsphere-csp-getting-started/GUID-E0B41C69-7EEB-450F-A73D-5FD2FF39E891.html#GUID-7BA0CDAE-E031-470E-A685-60C82DAE36D2__GUID-D9A97A90-2777-46EA-94EB-F04A27FBB76D

       

      https://kb.vmware.com/s/article/1025279

      Requirements (aka. Acceptance Criteria):

      The setting can be easily configurable by the OCP admin and the configuration is automatically updated. Test that the setting is indeed applied and the maximum number of snapshots per volume is indeed changed.

      No change in the default

      Use Cases (Optional):

      As an OCP admin I would like to change the maximum number of snapshots per volumes.

      Out of Scope

      Anything outside of 

      https://docs.vmware.com/en/VMware-vSphere-Container-Storage-Plug-in/3.0/vmware-vsphere-csp-getting-started/GUID-E0B41C69-7EEB-450F-A73D-5FD2FF39E891.html#GUID-7BA0CDAE-E031-470E-A685-60C82DAE36D2__GUID-D9A97A90-2777-46EA-94EB-F04A27FBB76D

      Background

      The default value can't be overwritten, reconciliation prevents it.

      Customer Considerations

      Make sure the customers understand the impact of increasing the number of snapshots per volume.

      https://kb.vmware.com/s/article/1025279

      Documentation Considerations

      Document how to change the value as well as a link to the best practice. Mention that there is a 32 hard limit. Document other limitations if any.

      Interoperability Considerations

      N/A

            rh-gs-gcharot Gregory Charot
            rh-gs-gcharot Gregory Charot
            Roman Bednar Roman Bednar
            Penghao Wang Penghao Wang
            Matthew Werner Matthew Werner
            Jan Safranek Jan Safranek
            Gregory Charot Gregory Charot
            Eric Rich Eric Rich
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              Created:
              Updated:
              Resolved: