`--input` and `--output` are required arguments, and can be a directory or a file path.
`--input` and `--output` are required arguments, and can be a directory or a file path.
`--if` and `--of`select the specific transfer method, on V0.3.2 there are only to possibilities:
`--if` and `--of`select the specific transfer method, on V0.4.0 there are many combinations:
`--if mpio` (It will read in parallel from i.e. lustre using MPI, and write using posix calls.)
`--if or --of` can be: posix, gekkofs, hercules, dataclay, expand and parallel (for MPIIO requests, but only one side is allowed).
`--of mpio` (It will read using posix calls, and write using MPI (i.e. to lustre))
Typically you should use posix or parallel and then one specialized adhocfs. Posix is also able to be used with LD_PRELOAD, however
higher performance and flexibility can be obtained using the specific configuration.
On the other hand, MPIIO (parallel) uses normally file locking so there is a performance imapact, and posix is faster (we supose no external modifications are done).
Other commands are `ping`, `shutdown` and `shaping` (for bw control).
Other commands are `ping`, `shutdown` and `shaping` (for bw control).
