New major features:

• Add CephFS AIORI (Mark Nelson)
• Add Gfarm AIORI (Osamu Tatebe)
• Add DAOS AIORI (Mohamad Chaarawi)
• Add DAOS DFS AIORI (Mohamad Chaarawi)
• -B option has been replaced with --posix.odirect

New minor features:

• Display outlier host names (Jean-Yves Vet)
• Enable global default dir layout for subdirs in Lustre (Petros Koutoupis)
• Removed pound signs (#) from mdtest output file names (Julian Kunkel)
• Print I/O hints from NCMPI (Wei-keng Liao)
• Add mknod support to mdtest (Gu Zheng)
• Refactor AIORI-specific options (Julian Kunkel)
• Enable IME native backend for mdtest (Jean-Yves Vet)
• Enable mkdir/rmdir to IME AIORI (Jean-Yves Vet)
• Add HDF5 collective metadata option (Rob Latham)
• Add support for sync to AIORIs (Julian Kunkel)

General user improvements and bug fixes:

• Allocate aligned buffers to support DirectIO for BeeGFS (Sven Breuner)
• Added IOPS and latency results to json output (Robert LeBlanc)
• Fixed case where numTasks is not evenly divisible by tasksPerNode (J. Schwartz)