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 47newfs $newfs_flags md$mdstart > /dev/null 48mount /dev/md$mdstart $mntpoint 49set +e 50 51(cd $odir/../testcases/swap; ./swap -t 5m -i 20 -h -l 100 > /dev/null) & 52cd $mntpoint 53$dir/kevent11 54s=$? 55[ -f kevent11.core -a $s -eq 0 ] && 56 { ls -l kevent11.core; mv kevent11.core /tmp; s=1; } 57cd $odir 58while pkill -9 swap; do :; done 59wait 60 61for i in `jot 6`; do 62 mount | grep -q "on $mntpoint " || break 63 umount $mntpoint && break || sleep 10 64done 65[ $i -eq 6 ] && exit 1 66mdconfig -d -u $mdstart 67rm -rf $dir/kevent11 68exit $s 69 70EOF 71#include <sys/param.h> 72#include <sys/event.h> 73#include <sys/mman.h> 74#include <sys/stat.h> 75#include <sys/wait.h> 76 77#include <machine/atomic.h> 78 79#include <err.h> 80#include <errno.h> 81#include <fcntl.h> 82#include <stdio.h> 83#include <stdlib.h> 84#include <string.h> 85#include <time.h> 86#include <unistd.h> 87 88static volatile u_int *share; 89static char *file = "file"; 90 91#define PARALLEL 256 92#define RUNTIME (3 * 60) 93#define SYNC 0 94 95static void 96test(void) 97{ 98 struct kevent ev[2]; 99 struct timespec ts; 100 int kq, fd, n; 101 102 if ((fd = open(file, O_RDONLY, 0)) == -1) 103 err(1, "open(%s). %s:%d", file, __func__, __LINE__); 104 105 if ((kq = kqueue()) < 0) 106 err(1, "kqueue()"); 107 108 n = 0; 109 EV_SET(&ev[n], fd, EVFILT_VNODE, EV_ADD | EV_ENABLE | EV_CLEAR, 110 NOTE_DELETE, 0, 0); 111 n++; 112 113 if (kevent(kq, ev, n, NULL, 0, NULL) < 0) 114 err(1, "kevent()"); 115 116 setproctitle("presync"); 117 atomic_add_int(&share[SYNC], 1); 118 while (share[SYNC] != PARALLEL) 119 usleep(10000); 120 setproctitle("postsync"); 121 122 memset(&ev, 0, sizeof(ev)); 123 n = kevent(kq, NULL, 0, ev, 1, &ts); 124 close(fd); 125 close(kq); 126 127 _exit(0); 128} 129 130int 131main(void) 132{ 133 pid_t pids[PARALLEL]; 134 size_t len; 135 time_t start; 136 int e, fd, i, status; 137 138 e = 0; 139 len = PAGE_SIZE; 140 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 141 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 142 err(1, "mmap"); 143 144 start = time(NULL); 145 while ((time(NULL) - start) < RUNTIME && e == 0) { 146 if ((fd = open(file, O_CREAT | O_TRUNC | O_RDWR, 0660)) == 147 -1) 148 err(1, "open(%s)", file); 149 close(fd); 150 share[SYNC] = 0; 151 for (i = 0; i < PARALLEL; i++) { 152 153 if ((pids[i] = fork()) == 0) 154 test(); 155 if (pids[i] == -1) 156 err(1, "fork()"); 157 } 158 while (share[SYNC] != PARALLEL) 159 usleep(10000); 160 if (unlink(file) == -1) 161 err(1, "unlink(%s). %s:%d\n", file, 162 __FILE__, __LINE__); 163 for (i = 0; i < PARALLEL; i++) { 164 if (waitpid(pids[i], &status, 0) == -1) 165 err(1, "waitpid(%d)", pids[i]); 166 if (status != 0) { 167 if (WIFSIGNALED(status)) 168 fprintf(stderr, 169 "pid %d exit signal %d\n", 170 pids[i], WTERMSIG(status)); 171 } 172 e += status == 0 ? 0 : 1; 173 } 174 } 175 176 return (e); 177} 178