6/30/2010
Data Test Program (dt)
56
Limitations/Notes
nOne device per process in test mode.
nAIO used in lieu of threads to increase I/O’s.
nAIO read-after-write (enable=raw) option does synchronous read(), thus slowing down AIO’s.
nEncoded LBA’s wrap at 2TB with 512 byte block size.
nMissing file system tests:
ufile locking
uappend/truncate (enabled via oflags=)
uholes (read back as zeros, step= creates)
uautomatic open() file flags (randomly select)
umore directory operations (rename, etc)
uetc.
uRemember: dt wasn’t designed for file systems!