129 lines
3.2 KiB
Bash
Executable File
129 lines
3.2 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
#
|
|
# Copyright (c) 2008 Peter Holm <pho@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.
|
|
#
|
|
|
|
# Testing problem with premature disk full problem with symlinks.
|
|
# Not seen as of 20210117.
|
|
|
|
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
|
|
|
|
. ../default.cfg
|
|
dbt=`sysctl -n vfs.dirtybufthresh`
|
|
[ $dbt -lt 1000 ] && echo "Note: vfs.dirtybufthresh = $dbt"
|
|
|
|
D=$diskimage
|
|
dd if=/dev/zero of=$D bs=1m count=128 status=none || exit 1
|
|
|
|
odir=`pwd`
|
|
dir=$mntpoint
|
|
|
|
cd /tmp
|
|
sed '1,/^EOF/d' < $odir/$0 > symlink.c
|
|
mycc -o symlink -Wall -Wextra symlink.c || exit 1
|
|
rm -f symlink.c
|
|
cd $odir
|
|
|
|
mount | grep -q "on $mntpoint " && umount $mntpoint
|
|
mdconfig -l | grep md$mdstart > /dev/null && mdconfig -d -u $mdstart
|
|
|
|
mdconfig -a -t vnode -f $D -u $mdstart
|
|
|
|
tst() {
|
|
local i j k
|
|
|
|
cd $dir
|
|
i=`df -ik $mntpoint | tail -1 | awk '{printf "%d\n", ($7 - 500)/2}'`
|
|
[ $i -gt 20000 ] && i=20000
|
|
|
|
for k in `jot 3`; do
|
|
for j in `jot 2`; do
|
|
/tmp/symlink $i &
|
|
done
|
|
wait
|
|
done
|
|
cd $odir
|
|
}
|
|
|
|
s=0
|
|
for i in "" "-U" "-j"; do
|
|
newfs $i /dev/md$mdstart > /dev/null 2>&1
|
|
mount /dev/md$mdstart $mntpoint
|
|
|
|
t1=`date +%s`
|
|
tst; s=$?
|
|
t2=$((`date +%s` - t1))
|
|
|
|
umount -f $mntpoint
|
|
t2=$((`date +%s` - t1))
|
|
echo "$t2 seconds elapsed for newfs option \"$i\""
|
|
[ $t2 -gt 1000 ] && s=111
|
|
done
|
|
rm -f /tmp/symlink $D
|
|
mdconfig -d -u $mdstart
|
|
exit $s
|
|
EOF
|
|
#include <sys/types.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
main(int argc __unused, char **argv)
|
|
{
|
|
pid_t pid;
|
|
int64_t size;
|
|
int i, j;
|
|
char file[128];
|
|
|
|
size = atol(argv[1]);
|
|
|
|
pid = getpid();
|
|
for (j = 0; j < size; j++) {
|
|
sprintf(file,"p%05d.%05d", pid, j);
|
|
if (symlink("/mnt/not/there", file) == -1) {
|
|
if (errno != EINTR) {
|
|
warn("symlink(%s)", file);
|
|
printf("break out at %d, errno %d\n", j,
|
|
errno);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = --j; i >= 0; i--) {
|
|
sprintf(file,"p%05d.%05d", pid, i);
|
|
if (unlink(file) == -1)
|
|
err(3, "unlink(%s)", file);
|
|
|
|
}
|
|
|
|
return (0);
|
|
}
|