-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
- * Use is subject to license terms.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/tests/mpi/cascading_rw.c
- *
- * Author: You Feng <youfeng@clusterfs.com>
- */
-
-#include <config.h>
-#include <mpi.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <getopt.h>
-#include <errno.h>
-#include "lp_utils.h"
-#ifndef _IOWR
-# include <ioctl.h>
-#endif
-
-#include <lustre/liblustreapi.h>
-
-int rank = 0;
-int size = 0;
-
-char *testdir = NULL;
-
-void rw_file(char *name, long stride, unsigned int seed)
-{
- char filename[MAX_FILENAME_LEN];
- char path[MAX_FILENAME_LEN];
- char errmsg[MAX_FILENAME_LEN+20];
- char *buf, *o_buf;
- struct lov_user_md lum = {0};
- int fd, rc, i, bad = 0, root = 0;
- long off;
- long PAGE_SIZE = sysconf(_SC_PAGESIZE);
-
- sprintf(filename, "%s/%s", testdir, name);
-
- if (rank == 0) {
- remove_file_or_dir(filename);
-
- lum.lmm_magic = LOV_USER_MAGIC;
- lum.lmm_stripe_size = 0;
- lum.lmm_stripe_count = 0;
- lum.lmm_stripe_offset = -1;
-
- fd = open(filename, O_CREAT | O_RDWR | O_LOV_DELAY_CREATE,
- FILEMODE);
- if (fd == -1) {
- sprintf(errmsg, "open of file %s", filename);
- FAIL(errmsg);
- }
-
- rc = ioctl(fd, LL_IOC_LOV_SETSTRIPE, &lum);
- if (rc == -1) {
- sprintf(errmsg, "ioctl SETSTRIPE of file %s", filename);
- FAIL(errmsg);
- }
-
- if (close(fd) == -1) {
- sprintf(errmsg, "close of file %s", filename);
- FAIL(errmsg);
- }
-
- strncpy(path, filename, MAX_FILENAME_LEN);
- rc = llapi_file_get_stripe(path, &lum);
- if (rc == -1) {
- sprintf(errmsg, "get stripe of file %s", filename);
- FAIL(errmsg);
- }
- }
-
- MPI_Barrier(MPI_COMM_WORLD);
-
- if (stride < 0) {
- if (rank == 0) {
- srandom(seed);
- while (stride < PAGE_SIZE/2) {
- stride = random();
- stride -= stride % 16;
- if (stride < 0)
- stride = -stride;
- stride %= 2 * lum.lmm_stripe_size;
- }
- }
-
- MPI_Barrier(MPI_COMM_WORLD);
-
- MPI_Bcast(&stride, 1, MPI_LONG, root, MPI_COMM_WORLD);
- }
-
- MPI_Barrier(MPI_COMM_WORLD);
-
- buf = (char *)malloc(stride);
- if (buf == NULL) {
- sprintf(errmsg, "malloc of buf with size %ld", stride);
- FAIL(errmsg);
- }
-
- if (rank == 0) {
- fd = open(filename, O_RDWR);
- if (fd == -1) {
- sprintf(errmsg, "open of file %s", filename);
- FAIL(errmsg);
- }
-
- off = 0;
- fill_stride(buf, stride, 0, off);
- rc = write(fd, buf, stride);
- if (rc != stride) {
- sprintf(errmsg, "write of file %s return %d",
- filename, rc);
- FAIL(errmsg);
- }
- off += stride;
-
- while (off < size * stride) {
- fill_stride(buf, stride, 0x8080808080808080ULL, off);
- rc = write(fd, buf, stride);
- if (rc != stride) {
- sprintf(errmsg, "write of file %s return %d",
- filename, rc);
- FAIL(errmsg);
- }
-
- off += stride;
- }
-
- if (close(fd) == -1) {
- sprintf(errmsg, "close of file %s", filename);
- FAIL(errmsg);
- }
- }
-
- MPI_Barrier(MPI_COMM_WORLD);
-
- o_buf = (char *)malloc(stride);
- if (o_buf == NULL) {
- sprintf(errmsg, "malloc of o_buf with size %ld", stride);
- FAIL(errmsg);
- }
-
- fd = open(filename, O_RDWR);
- if (fd == -1) {
- sprintf(errmsg, "open of file %s", filename);
- FAIL(errmsg);
- }
-
- off = 0;
- for (i = 1; i < size; ++i) {
- if (rank == i) {
- rc = lseek(fd, off, SEEK_SET);
- if (rc != off) {
- sprintf(errmsg, "lseek of file %s return %d",
- filename, rc);
- FAIL(errmsg);
- }
-
- rc = read(fd, buf, stride);
- if (rc != stride) {
- if (rc > 0) {
- fill_stride(o_buf, rc, i - 1, off);
- dump_diff(o_buf, buf, rc, off);
- }
- sprintf(errmsg, "read of file %s return %d",
- filename, rc);
- FAIL(errmsg);
- }
-
- fill_stride(o_buf, stride, i - 1, off);
- if (memcmp(o_buf, buf, stride) != 0) {
- dump_diff(o_buf, buf, stride, off);
- errno = 0;
- sprintf(errmsg, "Error: diff data read from %s",
- filename);
- FAIL(errmsg);
- }
- }
-
- off += stride;
-
- if (rank == i) {
- fill_stride(buf, stride, i, off);
- rc = write(fd, buf, stride);
- if (rc != stride) {
- sprintf(errmsg, "write of file %s return %d",
- filename, rc);
- FAIL(errmsg);
- }
- }
-
- MPI_Barrier(MPI_COMM_WORLD);
- }
-
- if (close(fd) == -1) {
- sprintf(errmsg, "close of file %s", filename);
- FAIL(errmsg);
- }
-
- MPI_Barrier(MPI_COMM_WORLD);
-
- if (rank == 0) {
- fd = open(filename, O_RDONLY);
- if (fd == -1) {
- sprintf(errmsg, "open of file %s", filename);
- FAIL(errmsg);
- }
-
- off = 0;
- for (i = 0; i < size; ++i) {
- rc = read(fd, buf, stride);
- if (rc != stride) {
- if (rc > 0) {
- fill_stride(o_buf, rc, i, off);
- dump_diff(o_buf, buf, rc, off);
- }
- sprintf(errmsg, "read of file %s", filename);
- FAIL(errmsg);
- }
-
- fill_stride(o_buf, stride, i, off);
- if (memcmp(o_buf, buf, stride) != 0) {
- bad = 1;
- dump_diff(o_buf, buf, stride, off);
- }
- off += stride;
- }
- if (bad == 1) {
- errno = 0;
- sprintf(errmsg, "Error: diff data read from %s", filename);
- FAIL(errmsg);
- }
- }
-
- MPI_Barrier(MPI_COMM_WORLD);
- fprintf(stderr, "passed barrier 5\n");
-
- free(buf);
- free(o_buf);
-}
-
-void cascading_rw(long stride, unsigned int seed)
-{
- begin("setup");
- end("setup");
-
- begin("test");
- rw_file("cascading_rw", stride, seed);
- end("test");
-
- begin("cleanup");
- remove_file("cascading_rw");
- end("cleanup");
-}
-
-void usage(char *proc)
-{
- int i;
-
- if (rank == 0) {
- printf("Usage: %s [-h] -d <testdir> [-s \"1024\"]\n", proc);
- printf(" [-n \"13\"] [-e \"12345\"]\n");
- printf(" [-v] [-V #] [-g]\n");
- printf("\t-h: prints this help message\n");
- printf("\t-d: the directory in which the tests will run\n");
- printf("\t-s: process stride size\n");
- printf("\t-n: repeat test # times\n");
- printf("\t-n: random seed, used to re-create previous runs\n");
- printf("\t-v: increase the verbositly level by 1\n");
- printf("\t-V: select a specific verbosity level\n");
- printf("\t-g: debug mode\n");
- }
-
- MPI_Initialized(&i);
- if (i) MPI_Finalize();
- exit(0);
-}
-
-int main(int argc, char *argv[])
-{
- int i, iterations = 16;
- char c;
- long stride = -1;
- unsigned int seed = 0;
-
- /* Check for -h parameter before MPI_Init so the binary can be
- called directly, without, for instance, mpirun */
- for (i = 1; i < argc; ++i) {
- if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help"))
- usage(argv[0]);
- }
-
- MPI_Init(&argc, &argv);
- MPI_Comm_rank(MPI_COMM_WORLD, &rank);
- MPI_Comm_size(MPI_COMM_WORLD, &size);
-
- /* Parse command line options */
- while (1) {
- c = getopt(argc, argv, "d:e:ghn:s:vV:");
- if (c == -1)
- break;
-
- switch (c) {
- case 'd':
- testdir = optarg;
- break;
- case 'e':
- seed = (unsigned int)atoi(optarg);
- break;
- case 'g':
- debug = 1;
- break;
- case 'h':
- usage(argv[0]);
- break;
- case 'n':
- iterations = atoi(optarg);
- break;
- case 's':
- stride = atol(optarg);
- break;
- case 'v':
- verbose += 1;
- break;
- case 'V':
- verbose = atoi(optarg);
- break;
- }
- }
-
- if (rank == 0)
- printf("%s is running with %d process(es) %s\n",
- argv[0], size, debug ? "in DEBUG mode" : "\b\b");
-
- if (size < 2) {
- fprintf(stderr,
- "There should be at least 3 process to run the test!\n");
- MPI_Abort(MPI_COMM_WORLD, 2);
- }
-
- if (testdir == NULL && rank == 0) {
- fprintf(stderr, "Please specify a test directory! (\"%s -h\" for help)\n",
- argv[0]);
- MPI_Abort(MPI_COMM_WORLD, 2);
- }
-
- lp_gethostname();
-
- for (i = 0; i < iterations; ++i) {
- if (rank == 0)
- printf("%s: Running test #%s(iter %d)\n",
- timestamp(), argv[0], i);
-
- cascading_rw(stride, seed);
- MPI_Barrier(MPI_COMM_WORLD);
- }
-
- if (rank == 0)
- printf("%s: All tests passed!\n", timestamp());
- MPI_Finalize();
- return 0;
-}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff