Explore the intricacies of configuring XFS on top of Device Mapper dm-thin in this comprehensive Linux Plumbers Conference talk. Learn how to properly set up a thin provisioned volume for optimal XFS filesystem performance and data integrity. Discover techniques for selecting the ideal data block size based on physical device geometry, and understand the challenges involved, including potential data loss, snapshot usage with large data block sizes, data fragmentation, and journaling. Delve into topics such as alignment, skip blocks, sequential writes, stacking snapshots, metadata management, and block zeroing. Gain insights into file system level checksums, usability considerations, and extended device configurations. Master the art of tuning XFS on dm-thin to achieve peak performance and reliability in your Linux environment.