Shivam Wayal enhanced the reliability of Windows end-to-end tests in the kubernetes/kubernetes repository by addressing volume size verification issues. He replaced the previous fsutil-based approach with a PowerShell Get-Volume solution, introducing a multi-stage logic to accurately determine mounted volume sizes, even in complex directory mount scenarios. This update reduced test flakiness and improved snapshot size accuracy, particularly benefiting environments like CAPZ. Shivam’s work leveraged his expertise in E2E testing, Kubernetes, and PowerShell scripting, resulting in a robust, traceable fix that improved test determinism and maintainability for Windows-based Kubernetes environments without introducing new features during the period.