kubernetes/test/e2e/upgrades/storage/volume_mode.go

const devicePath …

type VolumeModeDowngradeTest …

// Name returns the tracking name of the test.
func (VolumeModeDowngradeTest) Name() string { … }

// Skip returns true when this test can be skipped.
func (t *VolumeModeDowngradeTest) Skip(upgCtx upgrades.UpgradeContext) bool { … }

// Setup creates a block pv and then verifies that a pod can consume it.  The pod writes data to the volume.
func (t *VolumeModeDowngradeTest) Setup(ctx context.Context, f *framework.Framework) { … }

// Test waits for the downgrade to complete, and then verifies that a pod can no
// longer consume the pv as it is not mapped nor mounted into the pod
func (t *VolumeModeDowngradeTest) Test(ctx context.Context, f *framework.Framework, done <-chan struct{ … }

// Teardown cleans up any remaining resources.
func (t *VolumeModeDowngradeTest) Teardown(ctx context.Context, f *framework.Framework) { … }