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Next Generation File Systems

Abstract:

With Moore's law still holding out for storage, such massive amounts of data are stored on ever cheaper hardware, that new file systems must perform many tasks in addition to mere bookkeeping. The storage technologies also forked into low latency solid state media and high capacity magnetic media, which has important implications on how file systems operate to make the best use of what is available.

The talk will present what developers working with files should learn to expect from these new file systems, with focus on ZFS and Btrfs, explaining features that are considered crucial for modern file systems, such as checksumming data and doing read-repair, features that can make a big impact on performance and also the shift of volume management into file systems themselves in order to better optimize storage access times and bandwidth. Ultimately I will try to explain how most important features are implemented in practice and how this changes things for people used to working with older file systems, especially from performance and reliability standpoints, both in simple and complex computing environments.

Speaker: Jure Koren