Implementing HDFS ACLs in OneFS - A Guide to POSIX.1e Style Access Control Lists

Learn about implementing HDFS ACLs in a multiprotocol environment through this 50-minute technical conference talk from the Storage Developer Conference 2022. Explore the complexities of translating between NFSv3 mode bits, NFSv4 ACLs, Windows Style ACLs, and POSIX.1e ACLs in Dell Technologies' OneFS system. Master the fundamentals of POSIX.1e ACLs, their unique structure, and evaluation algorithms while understanding their interactions with other security models. Dive deep into multithreading challenges, chmod implementation complexities, and practical translation approaches between different ACL types. Follow along with detailed examples of permissions, NTFS ACLs, POSIX ACE format, and access checking mechanisms. Examine critical implementation considerations including disk storage, design analysis, concurrency issues, replication factors, and potential translation inaccuracies that arise in multiprotocol environments.