David Cassany
Starting his career at a research foundation, David Cassany contributed to projects focused on multimedia streaming within open-source Linux ecosystems. For the past decade, he has brought that expertise to SUSE as an open-source software engineer, specializing in Linux appliance build tools, containerized systems, and Kubernetes architectures.
Session
Delivering a Linux OS via OCI images unifies infrastructure management but often introduces severe network and state-reconciliation bottlenecks. This talk dives into the mechanics of solving these challenges by applying OS updates directly from OCI images to btrfs snapshots. We will explore how to drastically optimize these atomic upgrades using zstd-chunked compression, enabling systems to execute file-level delta updates via HTTP range requests instead of pulling full layers. Finally, we will demonstrate how to leverage snapper for seamless 3-way merges, safely reconciling upstream OS changes with local user configurations.