New major features: - Add PMDK backend (Adrian Jackson) - Add CHFS backend (Osamu Tatebe) - Add AIO backend (Julian Kunkel) - New S3 backend (Julian Kunkel) - New md-workbench benchmark (Julian Kunkel) - New BFS backend (Osamu Tatebe) - Add GPUDirect Storage support (Julian Kunkel) New minor features: - Updated DAOS backend to match latest DAOS APIs (Mohamad Chaarawi) - Updated HDF5 backend (Jordan Henderson) - Improved Spectrum Scale hint support (Pidad D'Souza) - Add CSV output (Sebastian Oeste) - Improved Gfarm support (Osamu Tatebe) - Updated HDFS backend - MDTest now has a directory renaming test - Add prologue/epilogue support (GUAN Xin) - Add stronger randomized data using golden primes (Glenn K. Lockwood) - Add dummy backend (Julian Kunkel) - Improved CephFS support (Pablo Llopis) - Improved PnetCDF support (Wei-keng Liao) Bugfixes: - Expansive fixes to mdtest correctness (Julian Kunkel)