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PowerProtect Data Manager 19.11 Kubernetes User Guide

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Using the PowerFlex volumegroup snapshot extension

The PowerFlex CSI driver volumegroup snapshot extension enables you to snapshot all of the Kubernetes PVCs that belong to the same volume group, instead of creating a snapshot of each PVC using the existing CSI volumesnapshot functionality.

PowerProtect Data Manager automatically uses the volumegroup snapshot extension when the following conditions are met:

  • The Kubernetes clusters are using PVCs provisioned by the CSI driver for PowerFlex.
  • The CSI driver for PowerFlex has the volumegroup snapshotter feature enabled, and the volumegroupsnapshot CRD is present on the Kubernetes cluster.
  • The PVCs share the same volume-group label.

When the volumegroup snapshotter feature is in use for a group of PVCs in a protection policy, an entry for VolumeGroup appears in the Details pane of the PowerProtect Data Manager UI Jobs window for the protection policy backup.

NOTE If one or more PVCs belonging to a volumegroup is excluded from a protection policy, PowerProtect Data Manager falls back to using the volumesnapshot functionality for all of the PVCs in this volumegroup, even if the other PVCs in the volumegroup are included in the protection policy. When this occurs, the backup completes successfully but with a warning in the PowerProtect Data Manager UI Jobs window.

If you want PowerProtect Data Manager to use the volumesnapshot functionality instead of the PowerFlex volumegroup snapshot extension, you can disable the volumegroup snapshot extension by performing the following steps:

  1. From the PowerProtect Data Manager UI, go to Infrastructure > Asset Sources.
  2. In the Kubernetes tab, select the Kubernetes cluster asset source that is used to protect the PVCs belonging to the volume group, and then click Edit.
  3. In the Edit Kubernetes dialog box, click the down arrow to expand Advanced Settings.
  4. Under Controller Configuration, set the value for the property k8s.ppdm.support.volumeGroup to false.

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