1 /* 2 * Disktest 3 * Copyright (c) International Business Machines Corp., 2001 4 * 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 19 * 20 * Please send e-mail to yardleyb (at) us.ibm.com if you have 21 * questions or comments. 22 * 23 * Project Website: TBD 24 * 25 * $Id: usage.c,v 1.5 2008/02/14 08:22:24 subrata_modak Exp $ 26 * 27 */ 28 29 #include <stdio.h> 30 31 void usage(void) 32 { 33 printf("\n"); 34 printf("\tdisktest [OPTIONS...] filespec\n"); 35 printf("\t-?\t\tDisplay this help text and exit.\n"); 36 printf("\t-a seed\t\tSets seed for random number generation.\n"); 37 printf("\t-A action\tSpecifies modified actions during runtime.\n"); 38 printf("\t-B lblk[:hblk]\tSet the block transfer size.\n"); 39 printf("\t-c\t\tUse a counting sequence as the data pattern.\n"); 40 printf 41 ("\t-C cycles\tRun until cycles disk access cycles are complete.\n"); 42 printf("\t-d\t\tDump data to standard out and exit.\n"); 43 printf("\t-D r%%:w%%\tDuty cycle used while reading and/or writing.\n"); 44 printf 45 ("\t-E cmp_len\tTurn on error checking comparing <cmp_len> bytes.\n"); 46 printf("\t-f byte\t\tUse a fixed data pattern up to 8 bytes.\n"); 47 printf("\t-F \t\tfilespec is a file describing a list of targets\n"); 48 printf 49 ("\t-h hbeat\tDisplays performance statistic every <hbeat> seconds.\n"); 50 printf("\t-I IO_type\tSet the data transfer type to IO_type.\n"); 51 printf("\t-K threads\tSet the number of test threads.\n"); 52 printf("\t-L seeks\tTotal number of seeks to occur.\n"); 53 printf("\t-m\t\tMark each LBA with header information.\n"); 54 printf("\t-M marker\tSpecify an alternate marker then start time.\n"); 55 printf("\t-n\t\tUse the LBA number as the data pattern.\n"); 56 printf("\t-N num_secs\tSet the number of available sectors.\n"); 57 printf("\t-o offset\tSet lba alignment offset.\n"); 58 printf("\t-p seek_pattern\tSet the pattern of disk seeks.\n"); 59 printf("\t-P perf_opts\tDisplays performance statistic.\n"); 60 printf("\t-q\t\tSuppress INFO level messages.\n"); 61 printf("\t-Q\t\tSuppress header information on messages.\n"); 62 printf("\t-r\t\tRead data from disk.\n"); 63 printf 64 ("\t-R rty[:dly]\tNumber of retries / retry delay after failure.\n"); 65 printf("\t-s sLBA[:eLBA]\tSet the start [and stop] test LBA.\n"); 66 printf("\t-S sblk[:eblk]\tSet the start [and stop] test block.\n"); 67 printf("\t-t dMin[:dMax][:ioTMO] set IO timing /timeout operations.\n"); 68 printf("\t-T runtime\tRun until <runtime> seconds have elapsed.\n"); 69 printf("\t-w\t\tWrite data to disk.\n"); 70 printf("\t-v\t\tDisplay version information and exit.\n"); 71 printf("\t-z\t\tUse randomly generated data as the data pattern.\n"); 72 } 73
