https://docs.openshift.com/container-platform/4.13/storage/container_storage_interface/persistent-storage-csi-snapshots.html#persistent-storage-csi-snapshots-create_persistent-storage-csi-snapshots includes an informational note regarding stopping a pod using a PVC to avoid data corruption. The note needs to be adjusted to state something similar to the following:

Creating a volume snapshot of a PVC while a pod is using it could cause unwritten (cached) data to not be included in the snapshot. To ensure all data is written to disk, tear down the pod using the PVC to ensure all in-flight data is written to disk before taking the snapshot.

4.13

N/A

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This documentation change should be made in 4.12 and 4.14 as well.