lustre/tests/createmany.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   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 version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  */
  31
  32 #include <errno.h>
  33 #include <fcntl.h>
  34 #include <getopt.h>
  35 #include <stdbool.h>
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <string.h>
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41 #include <sys/time.h>
  42 #include <time.h>
  43 #include <unistd.h>
  44
  45 static void usage(const char *prog)
  46 {
  47         printf("usage: %s {-o [-k]|-m|-d|-l<tgt>} [-u[<unlinkfmt>]] "
  48                "[-t seconds] filenamefmt [[start] count]\n", prog);
  49         printf("\t-l\tlink files to existing <tgt> file\n"
  50                "\t-m\tmknod regular files (don't create OST objects)\n"
  51                "\t-o\topen+create files with path and printf format\n"
  52                "\t-k\t    keep files open until all files are opened\n"
  53                "\t-u\tunlink file/dir (with optional <unlinkfmt>)\n");
  54         printf("\t-d\tuse directories instead of regular files\n"
  55                "\t-t\tstop creating files after <seconds> have elapsed\n");
  56
  57         exit(EXIT_FAILURE);
  58 }
  59
  60 static char *get_file_name(const char *fmt, long n, int has_fmt_spec)
  61 {
  62         static char filename[4096];
  63         int bytes;
  64
  65         bytes = has_fmt_spec ? snprintf(filename, 4095, fmt, n) :
  66                 snprintf(filename, 4095, "%s%ld", fmt, n);
  67         if (bytes >= 4095) {
  68                 printf("file name too long\n");
  69                 exit(EXIT_FAILURE);
  70         }
  71         return filename;
  72 }
  73
  74 double now(void)
  75 {
  76         struct timeval tv;
  77         gettimeofday(&tv, NULL);
  78         return (double)tv.tv_sec + (double)tv.tv_usec / 1000000;
  79 }
  80
  81 int main(int argc, char ** argv)
  82 {
  83         bool do_open = false, do_keep = false, do_link = false;
  84         bool do_unlink = false, do_mknod = false, do_mkdir = false;
  85         char *filename, *progname;
  86         char *fmt = NULL, *fmt_unlink = NULL, *tgt = NULL;
  87         char *endp = NULL;
  88         double start, last_t, end;
  89         long begin = 0, count = ~0UL >> 1;
  90         int has_fmt_spec = 0, unlink_has_fmt_spec = 0;
  91         long i, total, last_i = 0;
  92         int c, last_fd = -1, stderr_fd;
  93         int rc = 0;
  94
  95         /* Handle the deprecated positional last argument "-seconds" */
  96         if (argc > 1 && argv[argc - 1][0] == '-' &&
  97             (end = strtol(argv[argc - 1] + 1, &endp, 0)) && *endp == '\0') {
  98                 fprintf(stderr, "warning: '-runtime' deprecated, "
  99                         "use '-t runtime' instead\n");
 100                 argv[--argc] = NULL;
 101         } else {
 102                 /* Not '-number', let regular argument parsing handle it. */
 103                 end = ~0U >> 1;
 104         }
 105
 106         if ((endp = strrchr(argv[0], '/')) != NULL)
 107                 progname = endp + 1;
 108         else
 109                 progname = argv[0];
 110
 111         while ((c = getopt(argc, argv, "dl:kmor::t:u::")) != -1) {
 112                 switch (c) {
 113                 case 'd':
 114                         do_mkdir = true;
 115                         break;
 116                 case 'k':
 117                         do_keep = true;
 118                         break;
 119                 case 'l':
 120                         do_link = true;
 121                         tgt = optarg;
 122                         break;
 123                 case 'm':
 124                         do_mknod = true;
 125                         break;
 126                 case 'o':
 127                         do_open = true;
 128                         break;
 129                 case 't':
 130                         end = strtol(optarg, &endp, 0);
 131                         if (end <= 0.0 || *endp != '\0')
 132                                 usage(progname);
 133                         break;
 134                 case 'r':
 135                 case 'u':
 136                         do_unlink = true;
 137                         fmt_unlink = optarg;
 138                         break;
 139                 case '?':
 140                         fprintf(stderr, "Unknown option '%c'\n", optopt);
 141                         usage(progname);
 142                 }
 143         }
 144
 145         if (do_open + do_mkdir + do_link + do_mknod > 1 ||
 146             do_open + do_mkdir + do_link + do_mknod + do_unlink == 0) {
 147                 fprintf(stderr, "error: only one of -o, -m, -l, -d\n");
 148                 usage(progname);
 149         }
 150
 151         if (!do_open && do_keep) {
 152                 fprintf(stderr, "error: can only use -k with -o\n");
 153                 usage(progname);
 154         }
 155
 156         switch (argc - optind) {
 157         case 3:
 158                 begin = strtol(argv[argc - 2], NULL, 0);
 159         case 2:
 160                 count = strtol(argv[argc - 1], NULL, 0);
 161         case 1:
 162                 fmt = argv[optind];
 163                 break;
 164         default:
 165                 usage(progname);
 166         }
 167
 168         has_fmt_spec = strchr(fmt, '%') != NULL;
 169         if (fmt_unlink != NULL)
 170                 unlink_has_fmt_spec = strchr(fmt_unlink, '%') != NULL;
 171
 172         for (i = 0, start = last_t = now(), end += start;
 173              i < count && now() < end; i++, begin++) {
 174                 filename = get_file_name(fmt, begin, has_fmt_spec);
 175                 if (do_open) {
 176                         int fd = open(filename, O_CREAT|O_RDWR, 0644);
 177                         if (fd < 0) {
 178                                 printf("open(%s) error: %s\n", filename,
 179                                        strerror(errno));
 180                                 rc = errno;
 181                                 break;
 182                         }
 183                         if (!do_keep)
 184                                 close(fd);
 185                         else if (fd > last_fd)
 186                                 last_fd = fd;
 187                 } else if (do_link) {
 188                         rc = link(tgt, filename);
 189                         if (rc) {
 190                                 printf("link(%s, %s) error: %s\n",
 191                                        tgt, filename, strerror(errno));
 192                                 rc = errno;
 193                                 break;
 194                         }
 195                 } else if (do_mkdir) {
 196                         rc = mkdir(filename, 0755);
 197                         if (rc) {
 198                                 printf("mkdir(%s) error: %s\n",
 199                                        filename, strerror(errno));
 200                                 rc = errno;
 201                                 break;
 202                         }
 203                 } else if (do_mknod) {
 204                         rc = mknod(filename, S_IFREG | 0444, 0);
 205                         if (rc) {
 206                                 printf("mknod(%s) error: %s\n",
 207                                        filename, strerror(errno));
 208                                 rc = errno;
 209                                 break;
 210                         }
 211                 }
 212                 if (do_unlink) {
 213                         if (fmt_unlink != NULL)
 214                                 filename = get_file_name(fmt_unlink, begin,
 215                                                          unlink_has_fmt_spec);
 216
 217                         rc = do_mkdir ? rmdir(filename) : unlink(filename);
 218                         if (rc) {
 219                                 printf("unlink(%s) error: %s\n",
 220                                        filename, strerror(errno));
 221                                 rc = errno;
 222                                 break;
 223                         }
 224                 }
 225
 226                 if ((i != 0 && (i % 10000) == 0) || now() - last_t >= 10.0) {
 227                         double tmp = now();
 228
 229                         printf(" - %s%s %ld (time %.2f total %.2f last %.2f)"
 230                                "\n",
 231                                do_open ? do_keep ? "open/keep" : "open/close" :
 232                                         do_mkdir ? "mkdir" : do_link ? "link" :
 233                                         do_mknod ? "create" : "",
 234                                do_unlink ? do_mkdir ? "/rmdir" : "/unlink" : "",
 235                                i, tmp, tmp - start,
 236                                (i - last_i) / (tmp - last_t));
 237                         last_t = tmp;
 238                         last_i = i;
 239                 }
 240         }
 241         last_t = now();
 242         total = i;
 243         printf("total: %ld %s%s in %.2f seconds: %.2f ops/second\n", total,
 244                do_open ? do_keep ? "open/keep" : "open/close" :
 245                         do_mkdir ? "mkdir" : do_link ? "link" :
 246                                              do_mknod ? "create" : "",
 247                do_unlink ? do_mkdir ? "/rmdir" : "/unlink" : "",
 248                last_t - start, ((double)total / (last_t - start)));
 249
 250         if (!do_keep)
 251                 return rc;
 252
 253         stderr_fd = fileno(stderr);
 254         start = last_t;
 255         /* Assume fd is allocated in order, doing extra closes is not harmful */
 256         for (i = 0; i < total && last_fd > stderr_fd; i++, --last_fd) {
 257                 close(last_fd);
 258
 259                 if ((i != 0 && (i % 10000) == 0) || now() - last_t >= 10.0) {
 260                         double tmp = now();
 261
 262                         printf(" - closed %ld (time %.2f total %.2f last %.2f)"
 263                                "\n", i, tmp, tmp - start,
 264                                (i - last_i) / (tmp - last_t));
 265                         last_t = tmp;
 266                         last_i = i;
 267                 }
 268         }
 269         last_t = now();
 270
 271         printf("total: %ld close in %.2f seconds: %.2f close/second\n",
 272                total, last_t - start, ((double)total / (last_t - start)));
 273         return rc;
 274 }