--- /dev/null
+/* -*- 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