/usr/bin/raidz_test: invalid option -- '-'
Usage:
	[-a zio ashift (default: 9)]
	[-o zio offset, exponent radix 2 (default: 0)]
	[-d number of raidz data columns (default: 8)]
	[-s zio size, exponent radix 2 (default: 19)]
	[-S parameter sweep (default: no)]
	[-t timeout for parameter sweep test]
	[-B benchmark all raidz implementations]
	[-e use expanded raidz map (default: no)]
	[-r expanded raidz map reflow offset (default: ffffffffffffffff)]
	[-v increase verbosity (default: 0)]
	[-h (print help)]
	[-T test the test, see if failure would be detected]
	[-D debug (attach gdb on SIGSEGV)]