lustre/tests/mpi/cascading_rw.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/tests/mpi/cascading_rw.c
  37  *
  38  * Author: You Feng <youfeng@clusterfs.com>
  39  */
  40
  41 #include <config.h>
  42 #include <mpi.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <sys/types.h>
  47 #include <asm/types.h>
  48 #include <sys/stat.h>
  49 #include <fcntl.h>
  50 #include <unistd.h>
  51 #include <sys/ioctl.h>
  52 #include <getopt.h>
  53 #include <errno.h>
  54
  55 #include <libcfs/libcfs.h>
  56 #include "lp_utils.h"
  57 #ifndef _IOWR
  58 # include <ioctl.h>
  59 #endif
  60
  61 #include <lustre/liblustreapi.h>
  62
  63 int rank = 0;
  64 int size = 0;
  65
  66 char *testdir = NULL;
  67
  68 void rw_file(char *name, long stride, unsigned int seed)
  69 {
  70         char filename[MAX_FILENAME_LEN];
  71         char errmsg[MAX_FILENAME_LEN+20];
  72         char *buf, *o_buf;
  73         struct lov_user_md lum = {0};
  74         int fd, rc, i, bad = 0, root = 0;
  75         long off;
  76         long page_size = sysconf(_SC_PAGESIZE);
  77
  78         sprintf(filename, "%s/%s", testdir, name);
  79
  80         if (rank == 0) {
  81                 remove_file_or_dir(filename);
  82
  83                 lum.lmm_magic = LOV_USER_MAGIC;
  84                 lum.lmm_stripe_size = 0;
  85                 lum.lmm_stripe_count = 0;
  86                 lum.lmm_stripe_offset = -1;
  87
  88                 fd = open(filename, O_CREAT | O_RDWR | O_LOV_DELAY_CREATE,
  89                           FILEMODE);
  90                 if (fd == -1) {
  91                         sprintf(errmsg, "open of file %s", filename);
  92                         FAIL(errmsg);
  93                 }
  94
  95                 rc = ioctl(fd, LL_IOC_LOV_SETSTRIPE, &lum);
  96                 if (rc == -1) {
  97                         sprintf(errmsg, "ioctl SETSTRIPE of file %s", filename);
  98                         FAIL(errmsg);
  99                 }
 100
 101                 if (close(fd) == -1) {
 102                         sprintf(errmsg, "close of file %s", filename);
 103                         FAIL(errmsg);
 104                 }
 105         }
 106
 107         MPI_Barrier(MPI_COMM_WORLD);
 108
 109         if (stride < 0) {
 110                 if (rank == 0) {
 111                         srandom(seed);
 112                         while (stride < page_size/2) {
 113                                 stride = random();
 114                                 stride -= stride % 16;
 115                                 if (stride < 0)
 116                                         stride = -stride;
 117                                 stride %= 2 * lum.lmm_stripe_size;
 118                         }
 119                 }
 120
 121                 MPI_Barrier(MPI_COMM_WORLD);
 122
 123                 MPI_Bcast(&stride, 1, MPI_LONG, root, MPI_COMM_WORLD);
 124         }
 125
 126         MPI_Barrier(MPI_COMM_WORLD);
 127
 128         buf = (char *)malloc(stride);
 129         if (buf == NULL) {
 130                 sprintf(errmsg, "malloc of buf with size %ld", stride);
 131                 FAIL(errmsg);
 132         }
 133
 134         if (rank == 0) {
 135                 fd = open(filename, O_RDWR);
 136                 if (fd == -1) {
 137                         sprintf(errmsg, "open of file %s", filename);
 138                         FAIL(errmsg);
 139                 }
 140
 141                 off = 0;
 142                 fill_stride(buf, stride, 0, off);
 143                 rc = write(fd, buf, stride);
 144                 if (rc != stride) {
 145                         sprintf(errmsg, "write of file %s return %d",
 146                                 filename, rc);
 147                         FAIL(errmsg);
 148                 }
 149                 off += stride;
 150
 151                 while (off < size * stride) {
 152                         fill_stride(buf, stride, 0x8080808080808080ULL, off);
 153                         rc = write(fd, buf, stride);
 154                         if (rc != stride) {
 155                                 sprintf(errmsg, "write of file %s return %d",
 156                                         filename, rc);
 157                                 FAIL(errmsg);
 158                         }
 159
 160                         off += stride;
 161                 }
 162
 163                 if (close(fd) == -1) {
 164                         sprintf(errmsg, "close of file %s", filename);
 165                         FAIL(errmsg);
 166                 }
 167         }
 168
 169         MPI_Barrier(MPI_COMM_WORLD);
 170
 171         o_buf = (char *)malloc(stride);
 172         if (o_buf == NULL) {
 173                 sprintf(errmsg, "malloc of o_buf with size %ld", stride);
 174                 FAIL(errmsg);
 175         }
 176
 177         fd = open(filename, O_RDWR);
 178         if (fd == -1) {
 179                 sprintf(errmsg, "open of file %s", filename);
 180                 FAIL(errmsg);
 181         }
 182
 183         off = 0;
 184         for (i = 1; i < size; ++i) {
 185                 if (rank == i) {
 186                         rc = lseek(fd, off, SEEK_SET);
 187                         if (rc != off) {
 188                                 sprintf(errmsg, "lseek of file %s return %d",
 189                                         filename, rc);
 190                                 FAIL(errmsg);
 191                         }
 192
 193                         rc = read(fd, buf, stride);
 194                         if (rc != stride) {
 195                                 if (rc > 0) {
 196                                         fill_stride(o_buf, rc, i - 1, off);
 197                                         dump_diff(o_buf, buf, rc, off);
 198                                 }
 199                                 sprintf(errmsg, "read of file %s return %d",
 200                                         filename, rc);
 201                                 FAIL(errmsg);
 202                         }
 203
 204                         fill_stride(o_buf, stride, i - 1, off);
 205                         if (memcmp(o_buf, buf, stride) != 0) {
 206                                 dump_diff(o_buf, buf, stride, off);
 207                                 errno = 0;
 208                                 sprintf(errmsg, "Error: diff data read from %s",
 209                                         filename);
 210                                 FAIL(errmsg);
 211                         }
 212                 }
 213
 214                 off += stride;
 215
 216                 if (rank == i) {
 217                         fill_stride(buf, stride, i, off);
 218                         rc = write(fd, buf, stride);
 219                         if (rc != stride) {
 220                                 sprintf(errmsg, "write of file %s return %d",
 221                                         filename, rc);
 222                                 FAIL(errmsg);
 223                         }
 224                 }
 225
 226                 MPI_Barrier(MPI_COMM_WORLD);
 227         }
 228
 229         if (close(fd) == -1) {
 230                 sprintf(errmsg, "close of file %s", filename);
 231                 FAIL(errmsg);
 232         }
 233
 234         MPI_Barrier(MPI_COMM_WORLD);
 235
 236         if (rank == 0) {
 237                 fd = open(filename, O_RDONLY);
 238                 if (fd == -1) {
 239                         sprintf(errmsg, "open of file %s", filename);
 240                         FAIL(errmsg);
 241                 }
 242
 243                 off = 0;
 244                 for (i = 0; i < size; ++i) {
 245                         rc = read(fd, buf, stride);
 246                         if (rc != stride) {
 247                                 if (rc > 0) {
 248                                         fill_stride(o_buf, rc, i, off);
 249                                         dump_diff(o_buf, buf, rc, off);
 250                                 }
 251                                 sprintf(errmsg, "read of file %s", filename);
 252                                 FAIL(errmsg);
 253                         }
 254
 255                         fill_stride(o_buf, stride, i, off);
 256                         if (memcmp(o_buf, buf, stride) != 0) {
 257                                 bad = 1;
 258                                 dump_diff(o_buf, buf, stride, off);
 259                         }
 260                         off += stride;
 261                 }
 262                 if (bad == 1) {
 263                         errno = 0;
 264                         sprintf(errmsg, "Error: diff data read from %s", filename);
 265                         FAIL(errmsg);
 266                 }
 267         }
 268
 269         MPI_Barrier(MPI_COMM_WORLD);
 270         fprintf(stderr, "passed barrier 5\n");
 271
 272         free(buf);
 273         free(o_buf);
 274 }
 275
 276 void cascading_rw(long stride, unsigned int seed)
 277 {
 278         begin("setup");
 279         end("setup");
 280
 281         begin("test");
 282         rw_file("cascading_rw", stride, seed);
 283         end("test");
 284
 285         begin("cleanup");
 286         remove_file("cascading_rw");
 287         end("cleanup");
 288 }
 289
 290 void usage(char *proc)
 291 {
 292         int i;
 293
 294         if (rank == 0) {
 295                 printf("Usage: %s [-h] -d <testdir> [-s \"1024\"]\n", proc);
 296                 printf("           [-n \"13\"] [-e \"12345\"]\n");
 297                 printf("           [-v] [-V #] [-g]\n");
 298                 printf("\t-h: prints this help message\n");
 299                 printf("\t-d: the directory in which the tests will run\n");
 300                 printf("\t-s: process stride size\n");
 301                 printf("\t-n: repeat test # times\n");
 302                 printf("\t-n: random seed, used to re-create previous runs\n");
 303                 printf("\t-v: increase the verbositly level by 1\n");
 304                 printf("\t-V: select a specific verbosity level\n");
 305                 printf("\t-g: debug mode\n");
 306         }
 307
 308         MPI_Initialized(&i);
 309         if (i) MPI_Finalize();
 310         exit(0);
 311 }
 312
 313 int main(int argc, char *argv[])
 314 {
 315         int i, iterations = 16, c;
 316         long stride = -1;
 317         unsigned int seed = 0;
 318
 319         /* Check for -h parameter before MPI_Init so the binary can be
 320            called directly, without, for instance, mpirun */
 321         for (i = 1; i < argc; ++i) {
 322                 if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help"))
 323                         usage(argv[0]);
 324         }
 325
 326         MPI_Init(&argc, &argv);
 327         MPI_Comm_rank(MPI_COMM_WORLD, &rank);
 328         MPI_Comm_size(MPI_COMM_WORLD, &size);
 329
 330                 /* Parse command line options */
 331         while (1) {
 332                 c = getopt(argc, argv, "d:e:ghn:s:vV:");
 333                 if (c == -1)
 334                         break;
 335
 336                 switch (c) {
 337                 case 'd':
 338                         testdir = optarg;
 339                         break;
 340                 case 'e':
 341                         seed = (unsigned int)atoi(optarg);
 342                         break;
 343                 case 'g':
 344                         debug = 1;
 345                         break;
 346                 case 'h':
 347                         usage(argv[0]);
 348                         break;
 349                 case 'n':
 350                         iterations = atoi(optarg);
 351                         break;
 352                 case 's':
 353                         stride = atol(optarg);
 354                         break;
 355                 case 'v':
 356                         verbose += 1;
 357                         break;
 358                 case 'V':
 359                         verbose = atoi(optarg);
 360                         break;
 361                 }
 362         }
 363
 364         if (rank == 0)
 365                 printf("%s is running with %d process(es) %s\n",
 366                        argv[0], size, debug ? "in DEBUG mode" : "\b\b");
 367
 368         if (size < 2) {
 369                 fprintf(stderr,
 370                         "There should be at least 3 process to run the test!\n");
 371                 MPI_Abort(MPI_COMM_WORLD, 2);
 372         }
 373
 374         if (testdir == NULL && rank == 0) {
 375                 fprintf(stderr, "Please specify a test directory! (\"%s -h\" for help)\n",
 376                        argv[0]);
 377                 MPI_Abort(MPI_COMM_WORLD, 2);
 378         }
 379
 380         lp_gethostname();
 381
 382         for (i = 0; i < iterations; ++i) {
 383                 if (rank == 0)
 384                         printf("%s: Running test #%s(iter %d)\n",
 385                                timestamp(), argv[0], i);
 386
 387                 cascading_rw(stride, seed);
 388                 MPI_Barrier(MPI_COMM_WORLD);
 389         }
 390
 391         if (rank == 0)
 392                 printf("%s: All tests passed!\n", timestamp());
 393         MPI_Finalize();
 394         return 0;
 395 }