svn commit: r232489 - projects/stress2/misc

[Peter Holm]

Author: pho
Date: Sun Mar  4 12:52:00 2012
New Revision: 232489
URL: http://svn.freebsd.org/changeset/base/232489

Log:
  Scenario for rename(2) and umount returning "Device busy" added.

Added:
  projects/stress2/misc/rename7.sh   (contents, props changed)

Added: projects/stress2/misc/rename7.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ projects/stress2/misc/rename7.sh	Sun Mar  4 12:52:00 2012	(r232489)
@@ -0,0 +1,160 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2012 Peter Holm <pho at FreeBSD.org>
+# 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.
+#
+# $FreeBSD$
+#
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+# After a few runs this will happen:
+# $ umount /mnt
+# umount: unmount of /mnt failed: Device busy
+# $ umount -f /mnt
+# $ 
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > rename7.c
+cc -o rename7 -Wall -Wextra -O2 rename7.c
+rm -f rename7.c
+cd $here
+
+mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
+mdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 2g -u $mdstart
+bsdlabel -w md$mdstart auto
+newfs -U md${mdstart}$part > /dev/null
+mount /dev/md${mdstart}$part $mntpoint
+chmod 777 $mntpoint
+
+su ${testuser} -c "cd $mntpoint; /tmp/rename7"
+
+for i in `jot 10`; do
+	mount | grep -q md${mdstart}$part  && \
+		umount $mntpoint && mdconfig -d -u $mdstart && break
+done
+if mount | grep -q md${mdstart}$part; then
+	echo "Test failed"
+	exit 1
+fi
+rm -d /tmp/rename7
+exit 0
+EOF
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+const char *logfile = "test.log";
+int need_reopen = 1;
+pid_t wpid, spid;
+
+void
+handler(int s __unused)
+{
+        need_reopen = 1;
+}
+
+void
+cleanup()
+{
+	kill(wpid, SIGINT);
+	kill(spid, SIGINT);
+}
+
+void
+r1(void)
+{
+	int i;
+	struct stat sb1, sb2;
+
+	for (i = 0; i < 800000; i++) {
+		rename(logfile, "r1");
+		if (stat("r1", &sb1) == 0 && stat("r2", &sb2) == 0 &&
+		    bcmp(&sb1, &sb2, sizeof(sb1)) == 0) {
+			fprintf(stderr, "Bummer\n");
+			system("ls -ail");
+		}
+	}
+}
+
+void
+r2(void)
+{
+	int i;
+	struct stat sb1, sb2;
+
+//	_exit(0); /* No problems with only r1 running */
+	for (i = 0; i < 800000; i++) {
+		rename(logfile, "r2");
+		if (stat("r1", &sb1) == 0 && stat("r2", &sb2) == 0 &&
+		    bcmp(&sb1, &sb2, sizeof(sb1)) == 0) {
+			fprintf(stderr, "Bummer\n");
+			system("ls -ail");
+		}
+	}
+}
+int
+main(void)
+{
+	pid_t wpid, spid;
+	int fd, i;
+
+	if ((wpid = fork()) == 0)
+		r1();
+	if ((spid = fork()) == 0)
+		r2();
+
+	setproctitle("main");
+	atexit(cleanup);
+
+	for (i = 0; i < 800000; i++) {
+		if ((fd = open(logfile, O_RDWR | O_CREAT | O_TRUNC, 0644)) == -1)
+			warn("creat(%s)", logfile);
+		close(fd);
+	}
+
+
+	kill(wpid, SIGINT);
+	kill(spid, SIGINT);
+	wait(NULL);
+	wait(NULL);
+
+	return (0);
+}