1#!/bin/sh 2 3# 4# Copyright (c) 2017 Dell EMC Isilon 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# Variation of kevent5.sh 30# OOM seen: https://people.freebsd.org/~pho/stress/log/mark018.txt 31 32. ../default.cfg 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35dir=/tmp 36odir=`pwd` 37cd $dir 38sed '1,/^EOF/d' < $odir/$0 > $dir/kevent11.c 39mycc -o kevent11 -Wall -Wextra -O0 -g kevent11.c || exit 1 40rm -f kevent11.c 41cd $odir 42 43set -e 44mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 45[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 46mdconfig -a -t swap -s 2g -u $mdstart 47bsdlabel -w md$mdstart auto 48newfs $newfs_flags md${mdstart}$part > /dev/null 49mount /dev/md${mdstart}$part $mntpoint 50set +e 51 52(cd $odir/../testcases/swap; ./swap -t 5m -i 20 -h -l 100 > /dev/null) & 53cd $mntpoint 54$dir/kevent11 55s=$? 56[ -f kevent11.core -a $s -eq 0 ] && 57 { ls -l kevent11.core; mv kevent11.core /tmp; s=1; } 58cd $odir 59while pkill -9 swap; do :; done 60wait 61 62for i in `jot 6`; do 63 mount | grep -q "on $mntpoint " || break 64 umount $mntpoint && break || sleep 10 65done 66[ $i -eq 6 ] && exit 1 67mdconfig -d -u $mdstart 68rm -rf $dir/kevent11 69exit $s 70 71EOF 72#include <sys/param.h> 73#include <sys/event.h> 74#include <sys/mman.h> 75#include <sys/stat.h> 76#include <sys/wait.h> 77 78#include <machine/atomic.h> 79 80#include <err.h> 81#include <errno.h> 82#include <fcntl.h> 83#include <stdio.h> 84#include <stdlib.h> 85#include <string.h> 86#include <time.h> 87#include <unistd.h> 88 89static volatile u_int *share; 90static char *file = "file"; 91 92#define PARALLEL 256 93#define RUNTIME (3 * 60) 94#define SYNC 0 95 96static void 97test(void) 98{ 99 struct kevent ev[2]; 100 struct timespec ts; 101 int kq, fd, n; 102 103 if ((fd = open(file, O_RDONLY, 0)) == -1) 104 err(1, "open(%s). %s:%d", file, __func__, __LINE__); 105 106 if ((kq = kqueue()) < 0) 107 err(1, "kqueue()"); 108 109 n = 0; 110 EV_SET(&ev[n], fd, EVFILT_VNODE, EV_ADD | EV_ENABLE | EV_CLEAR, 111 NOTE_DELETE, 0, 0); 112 n++; 113 114 if (kevent(kq, ev, n, NULL, 0, NULL) < 0) 115 err(1, "kevent()"); 116 117 setproctitle("presync"); 118 atomic_add_int(&share[SYNC], 1); 119 while (share[SYNC] != PARALLEL) 120 usleep(10000); 121 setproctitle("postsync"); 122 123 memset(&ev, 0, sizeof(ev)); 124 n = kevent(kq, NULL, 0, ev, 1, &ts); 125 close(fd); 126 close(kq); 127 128 _exit(0); 129} 130 131int 132main(void) 133{ 134 pid_t pids[PARALLEL]; 135 size_t len; 136 time_t start; 137 int e, fd, i, status; 138 139 e = 0; 140 len = PAGE_SIZE; 141 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 142 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 143 err(1, "mmap"); 144 145 start = time(NULL); 146 while ((time(NULL) - start) < RUNTIME && e == 0) { 147 if ((fd = open(file, O_CREAT | O_TRUNC | O_RDWR, 0660)) == 148 -1) 149 err(1, "open(%s)", file); 150 close(fd); 151 share[SYNC] = 0; 152 for (i = 0; i < PARALLEL; i++) { 153 154 if ((pids[i] = fork()) == 0) 155 test(); 156 if (pids[i] == -1) 157 err(1, "fork()"); 158 } 159 while (share[SYNC] != PARALLEL) 160 usleep(10000); 161 if (unlink(file) == -1) 162 err(1, "unlink(%s). %s:%d\n", file, 163 __FILE__, __LINE__); 164 for (i = 0; i < PARALLEL; i++) { 165 if (waitpid(pids[i], &status, 0) == -1) 166 err(1, "waitpid(%d)", pids[i]); 167 if (status != 0) { 168 if (WIFSIGNALED(status)) 169 fprintf(stderr, 170 "pid %d exit signal %d\n", 171 pids[i], WTERMSIG(status)); 172 } 173 e += status == 0 ? 0 : 1; 174 } 175 } 176 177 return (e); 178} 179