Worked on the rancher/rke2 repository to develop a version-aware data directory cleanup feature using Go for backend development. This solution targeted operational stability by automatically removing obsolete data directories after a successful start, but only after performing an OS-level safety check to ensure no running processes were using those directories. The approach reduced disk usage and minimized the risk of data conflicts during upgrades, directly improving startup reliability and data integrity. By integrating process inspection and versioned cleanup logic, the work aligned with best practices for safe data management and efficient resource utilization in production environments, demonstrating careful attention to reliability.