During our testing, we discovered that when the worker nodes have 50GiB of space or less the PinnedImageSet does not apply to them. The documentation should recommend the user to have at least a volume size of 75GiB in the workers for the feature to work correctly.

    Everytime

    1.Create cluster with workers with volume size of 50GiB
    2.Apply PinnedImageSet
    

    When checking the machineconfignode of each worker they all display the following status in the pinnedImageSets annotation:

        "pinnedImageSets": [
            {
                "desiredGeneration": 1,
                "lastFailedGeneration": 1,
                "lastFailedGenerationErrors": [
                    "storage available is less than minimum required"
                ],
                "name": "worker-pinned-images"
            }
        ]

It is an expected status, in case of the volume size is not enough, that why the recommendation.

    Pinned images should be downloaded.