If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.

This assumes you have already created one or more Volume Snapshots. Check out my article OpenShift - Getting Started with Volume Snapshots.

The oc get VolumeSnapshots command can be used to list Volume Snapshots. It is important to recognize that the Volume Snapshot does not actually contain the content of the volume. Instead, the Volume Snapshot Content (more on this in a moment) contains the actual content of the volume. The Volume Snapshot is like the parent resource that ultimately attempts to create the Volume Snapshot Content.

]$ oc get volumesnapshots --namespace my-project
NAME                 READYTOUSE   SOURCEPVC   SOURCESNAPSHOTCONTENT   RESTORESIZE   SNAPSHOTCLASS     SNAPSHOTCONTENT                                    CREATIONTIME   AGE
my-volume-snapshot   true         my-pvc                              1Gi           csi-vsphere-vsc   snapcontent-d1e3b556-fb07-40b9-b032-976c9b5a84d7   6m8s           6m12s

And the oc get VolumeSnapshotContent command can be used to list the Volume Snapshot Contents that have been taken.

]$ oc get volumesnapshotcontent --namespace my-project
NAME                                               READYTOUSE   RESTORESIZE   DELETIONPOLICY   DRIVER                   VOLUMESNAPSHOTCLASS   VOLUMESNAPSHOT       VOLUMESNAPSHOTNAMESPACE   AGE
snapcontent-d1e3b556-fb07-40b9-b032-976c9b5a84d7   true         1073741824    Delete           csi.vsphere.vmware.com   csi-vsphere-vsc       my-volume-snapshot   my-project                7m45s