If a backup of the application fails, then that backup images should not appear in any of the PVs backup images chain. The backup of an application may fail for various reasons and at various points of the backup process. In the above example, one of the PV backup failed to upload the data to the backup media. In that case none of the PVs backup chains should contain any backup images from this backup. Furthermore, the CSI snapshot of the PV of the last known good backup should be preserved and any CSI snapshots that were created for the current backup job should be "cleaned up" (eliminated). When the next backup is scheduled, incremental backups are generated with respect to the last known good backup job of the PV CSI snapshots.