svn commit: r279522 - user/pho/stress2/misc
Peter Holm
pho at FreeBSD.org
Mon Mar 2 14:59:22 UTC 2015
Author: pho
Date: Mon Mar 2 14:59:21 2015
New Revision: 279522
URL: https://svnweb.freebsd.org/changeset/base/279522
Log:
Added a fts(3) test scenario.
Sponsored by: EMC / Isilon storage division
Added:
user/pho/stress2/misc/fts2.sh (contents, props changed)
Added: user/pho/stress2/misc/fts2.sh
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ user/pho/stress2/misc/fts2.sh Mon Mar 2 14:59:21 2015 (r279522)
@@ -0,0 +1,289 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2015 EMC Corp.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# Show invalid fts_info value:
+
+# FAULT
+# -rw------- 1 root wheel - 4 13 jan 09:25 ./lockf.0.3676
+# fts_path: ./lockf.0.3676
+# fts_info: 13 FTS_SLNONE
+# fts_errno: 0 No error: 0
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+cat > /tmp/fts2.c <<EOF
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define LOOPS 1
+#define PARALLEL 7
+
+pid_t pid;
+time_t start;
+int fd;
+char file[128];
+
+char *txt[] = {
+ "NULL",
+ "FTS_D",
+ "FTS_DC",
+ "FTS_DEFAULT",
+ "FTS_DNR",
+ "FTS_DOT",
+ "FTS_DP",
+ "FTS_ERR",
+ "FTS_F",
+ "FTS_INIT",
+ "FTS_NS",
+ "FTS_NSOK",
+ "FTS_SL",
+ "FTS_SLNONE",
+ "FTS_W",
+ "15",
+ "16",
+ "17",
+};
+
+
+int
+get(void) {
+ int sem;
+ if (lockf(fd, F_LOCK, 0) == -1)
+ err(1, "lockf(%s, F_LOCK)", file);
+ if (read(fd, &sem, sizeof(sem)) != sizeof(sem))
+ err(1, "get: read(%d)", fd);
+ if (lseek(fd, 0, SEEK_SET) == -1)
+ err(1, "lseek");
+ if (lockf(fd, F_ULOCK, 0) == -1)
+ err(1, "lockf(%s, F_ULOCK)", file);
+ return (sem);
+}
+
+void
+incr(void) {
+ int sem;
+ if (lockf(fd, F_LOCK, 0) == -1)
+ err(1, "lockf(%s, F_LOCK)", file);
+ if (read(fd, &sem, sizeof(sem)) != sizeof(sem))
+ err(1, "incr: read(%d)", fd);
+ if (lseek(fd, 0, SEEK_SET) == -1)
+ err(1, "lseek");
+ sem++;
+ if (write(fd, &sem, sizeof(sem)) != sizeof(sem))
+ err(1, "incr: read");
+ if (lseek(fd, 0, SEEK_SET) == -1)
+ err(1, "lseek");
+ if (lockf(fd, F_ULOCK, 0) == -1)
+ err(1, "lockf(%s, F_ULOCK)", file);
+}
+
+
+void
+tlockf(void)
+{
+ int i;
+ int sem = 0;
+
+ usleep(arc4random() % 10000);
+ sprintf(file, "lockf.0.%d", getpid());
+ if ((fd = open(file,O_CREAT | O_TRUNC | O_RDWR, 0600)) == -1)
+ err(1, "creat(%s)", file);
+ if (write(fd, &sem, sizeof(sem)) != sizeof(sem))
+ err(1, "write");
+ if (lseek(fd, 0, SEEK_SET) == -1)
+ err(1, "lseek");
+
+ pid = fork();
+ if (pid == -1) {
+ perror("fork");
+ exit(2);
+ }
+
+ if (pid == 0) { /* child */
+ for (i = 0; i < 100; i++) {
+ while ((get() & 1) == 0)
+ ;
+ incr();
+ }
+ exit(0);
+ } else { /* parent */
+ for (i = 0; i < 100; i++) {
+ while ((get() & 1) == 1)
+ ;
+ incr();
+ }
+ }
+ close(fd);
+ waitpid(pid, &i, 0);
+ unlink(file);
+}
+
+void
+tmkdir(void)
+{
+ pid_t pid;
+ int i, j;
+ char name[80];
+
+ setproctitle(__func__);
+ usleep(arc4random() % 10000);
+ pid = getpid();
+ for (j = 0; j < LOOPS; j++) {
+ for (i = 0; i < 1000; i++) {
+ snprintf(name, sizeof(name), "dir.%d.%06d", pid, i);
+ if (mkdir(name, 0644) == -1)
+ err(1, "mkfifo(%s)", name);
+ }
+ for (i = 0; i < 1000; i++) {
+ snprintf(name, sizeof(name), "dir.%d.%06d", pid, i);
+ if (rmdir(name) == -1)
+ err(1, "unlink(%s)", name);
+ }
+ }
+}
+
+void
+tfts(void)
+{
+ FTS *fts;
+ FTSENT *p;
+ int ftsoptions, i;
+ char *args[2];
+ char help[80];
+
+ usleep(arc4random() % 10000);
+ ftsoptions = FTS_LOGICAL;
+ args[0] = ".";
+ args[1] = 0;
+
+ for (i = 0; i < 10; i++) {
+ if ((fts = fts_open(args, ftsoptions, NULL)) == NULL)
+ err(1, "fts_open");
+
+ while ((p = fts_read(fts)) != NULL) {
+ if (p->fts_info == FTS_D || /* preorder directory */
+ p->fts_info == FTS_DNR || /* unreadable directory */
+ p->fts_info == FTS_DOT || /* dot or dot-dot */
+ p->fts_info == FTS_DP || /* postorder directory */
+ p->fts_info == FTS_F || /* regular file */
+ p->fts_info == FTS_NS) /* stat(2) failed */
+ continue;
+ fprintf(stderr, "FAULT\n");
+ sprintf(help, "ls -lo %s", p->fts_path);
+ system(help);
+ fprintf(stderr, "fts_path: %s\n", p->fts_path);
+ fprintf(stderr, "fts_info: %d %s\n", p->fts_info,
+ txt[p->fts_info]);
+ fprintf(stderr, "fts_errno: %d %s\n", p->fts_errno,
+ strerror(p->fts_errno));
+ }
+
+ if (errno != 0 && errno != ENOENT)
+ err(1, "fts_read");
+ if (fts_close(fts) == -1)
+ err(1, "fts_close()");
+ }
+}
+
+void
+test(void)
+{
+
+ start = time(NULL);
+ if (fork() == 0) {
+ while (time(NULL) - start < 60)
+ tmkdir();
+ _exit(0);
+ }
+ if (fork() == 0) {
+ while (time(NULL) - start < 60)
+ tlockf();
+ _exit(0);
+ }
+ if (fork() == 0) {
+ while (time(NULL) - start < 60)
+ tfts();
+ _exit(0);
+ }
+
+ wait(NULL);
+ wait(NULL);
+ wait(NULL);
+
+ _exit(0);
+}
+
+int
+main(void)
+{
+ int i;
+
+ for (i = 0; i < PARALLEL; i++)
+ if (fork() == 0)
+ test();
+ for (i = 0; i < PARALLEL; i++)
+ wait(NULL);
+
+ return (0);
+}
+EOF
+mycc -o /tmp/fts2 -Wall -Wextra -O0 -g /tmp/fts2.c || exit 1
+
+mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
+[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
+
+mdconfig -a -t swap -s 1g -u $mdstart || exit 1
+bsdlabel -w md$mdstart auto
+newfs md${mdstart}$part > /dev/null
+mount /dev/md${mdstart}$part $mntpoint
+
+(cd $mntpoint; /tmp/fts2)
+
+while mount | grep $mntpoint | grep -q /dev/md; do
+ umount $mntpoint || sleep 1
+done
+mdconfig -d -u $mdstart
+rm /tmp/fts2 /tmp/fts2.c
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