During March 2025, Piotr Sarna enhanced mount verification for the awslabs/mountpoint-s3-csi-driver by replacing os.Stat() with the statx syscall on Linux, improving detection of corrupted or unresponsive mounts in FUSE and networked filesystems. To ensure compatibility across diverse Linux environments, he implemented a safe fallback to os.Stat() when statx was unavailable. This approach leveraged his expertise in Go, Linux internals, and system programming, resulting in more robust mount reliability for Kubernetes deployments. The work demonstrated a deep understanding of file system management and low-level system calls, addressing a nuanced production issue with a targeted, maintainable engineering solution.