33 	printf("\n");  in usage()
34 	printf("\tdisktest [OPTIONS...] filespec\n");  in usage()
35 	printf("\t-?\t\tDisplay this help text and exit.\n");  in usage()
36 	printf("\t-a seed\t\tSets seed for random number generation.\n");  in usage()
37 	printf("\t-A action\tSpecifies modified actions during runtime.\n");  in usage()
38 	printf("\t-B lblk[:hblk]\tSet the block transfer size.\n");  in usage()
39 	printf("\t-c\t\tUse a counting sequence as the data pattern.\n");  in usage()
40 	printf  in usage()
42 	printf("\t-d\t\tDump data to standard out and exit.\n");  in usage()
43 	printf("\t-D r%%:w%%\tDuty cycle used while reading and/or writing.\n");  in usage()
44 	printf  in usage()
46 	printf("\t-f byte\t\tUse a fixed data pattern up to 8 bytes.\n");  in usage()
47 	printf("\t-F \t\tfilespec is a file describing a list of targets\n");  in usage()
48 	printf  in usage()
50 	printf("\t-I IO_type\tSet the data transfer type to IO_type.\n");  in usage()
51 	printf("\t-K threads\tSet the number of test threads.\n");  in usage()
52 	printf("\t-L seeks\tTotal number of seeks to occur.\n");  in usage()
53 	printf("\t-m\t\tMark each LBA with header information.\n");  in usage()
54 	printf("\t-M marker\tSpecify an alternate marker then start time.\n");  in usage()
55 	printf("\t-n\t\tUse the LBA number as the data pattern.\n");  in usage()
56 	printf("\t-N num_secs\tSet the number of available sectors.\n");  in usage()
57 	printf("\t-o offset\tSet lba alignment offset.\n");  in usage()
58 	printf("\t-p seek_pattern\tSet the pattern of disk seeks.\n");  in usage()
59 	printf("\t-P perf_opts\tDisplays performance statistic.\n");  in usage()
60 	printf("\t-q\t\tSuppress INFO level messages.\n");  in usage()
61 	printf("\t-Q\t\tSuppress header information on messages.\n");  in usage()
62 	printf("\t-r\t\tRead data from disk.\n");  in usage()
63 	printf  in usage()
65 	printf("\t-s sLBA[:eLBA]\tSet the start [and stop] test LBA.\n");  in usage()
66 	printf("\t-S sblk[:eblk]\tSet the start [and stop] test block.\n");  in usage()
67 	printf("\t-t dMin[:dMax][:ioTMO] set IO timing /timeout operations.\n");  in usage()
68 	printf("\t-T runtime\tRun until <runtime> seconds have elapsed.\n");  in usage()
69 	printf("\t-w\t\tWrite data to disk.\n");  in usage()
70 	printf("\t-v\t\tDisplay version information and exit.\n");  in usage()
71 	printf("\t-z\t\tUse randomly generated data as the data pattern.\n");  in usage()