/usr/bin/fio-dedupe: invalid option -- '-'
Check for dedupable blocks on a device/file

/usr/bin/fio-dedupe: [options] <device or file>
	-b	Chunk size to use
	-t	Number of threads to use
	-d	Full extent/chunk debug output
	-o	Use O_DIRECT
	-c	Full collision check
	-B	Use probabilistic bloom filter
	-p	Print progress indicator
	-C	Calculate compressible size