1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2023 Peter Holm <pho@FreeBSD.org> 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# Variation of fsck9.sh with smaller disk size and newfs options '', 'U' and 'O1' 31# fsck_ffs core dump seen 32 33. ../default.cfg 34 35[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 36 37cc -o /tmp/flip -Wall -Wextra -O2 ../tools/flip.c || exit 1 38 39set -e 40prog=$(basename "$0" .sh) 41u1=$mdstart 42u2=$((mdstart + 1)) 43mp1=${mntpoint}$u1 44mp2=${mntpoint}$u2 45mkdir -p $mp1 $mp2 46log=$mp1/$prog.sh.log 47diskimage=$mp1/$prog.sh.diskimage 48backup=/tmp/$prog.sh.diskimage.`date +%Y%m%dT%H%M%S`.gz 49cleans=0 50reruns=0 51 52# Pick a random newfs flag 53newfs_flags=$(echo "" "-U" "-O1" | awk -v N=`jot -r 1 1 3` '{print $N}') 54[ $# -eq 1 ] && newfs_flags="$1" # or use script argument 55max=$((512 * 1024)) 56 57mount | grep "on $mp1 " | grep -q /dev/md && umount -f $mp1 58[ -c /dev/md$u1 ] && mdconfig -d -u $u1 59mdconfig -a -t swap -s 1g -u $u1 60newfs $newfs_flags -n /dev/md$u1 > /dev/null 61mount /dev/md$u1 $mp1 62 63[ -c /dev/md$u2 ] && mdconfig -d -u $u2 64dd if=/dev/zero of=$diskimage bs=$max count=1 status=none 65mdconfig -a -t vnode -f $diskimage -u $u2 66backups=`newfs -N $newfs_flags md$u2 | grep -A1 "super-block backups" | \ 67 tail -1 | sed 's/,//g'` 68echo "newfs $newfs_flags -n md$u2" 69newfs $newfs_flags -n md$u2 > /dev/null 70set +e 71 72chk() { 73 local i 74 75 clean=0 76 rerun=0 77 fsck_ffs -fy $1 > $log 2>&1 78 r=$? 79 if grep -qiE "super-?block.*failed" $log; then 80 for b in $backups; do 81 echo "fsck_ffs -b $b -fy $1" 82 fsck_ffs -b $b -fy $1 > $log 2>&1 83 r=$? 84 grep -qiE "super-?block.*failed" $log || 85 break 86 echo "Checking next SB" 87 done 88 usedasb=1 89 else 90 usedasb=0 91 fi 92 LANG=C egrep -q "[A-Z][A-Z]" $log && clean=0 93 grep -Eq "IS CLEAN|MARKED CLEAN" $log && clean=1 94 grep -q RERUN $log && rerun=1 95 [ $r -ne 0 -a $clean -eq 1 ] && echo "Exit code $r w/ clean == 1" 96} 97 98cd $mp1 99clean=0 100errors=0 101s=0 102start=`date +%s` 103while [ $((`date +%s` - start)) -lt 300 ]; do 104 mount /dev/md$u2 $mp2 || break 105 if ! ls -lR $mp2 > /dev/null; then 106 s=102 107 echo "ls failed"; grep "core dumped" /var/log/messages | tail -1 108 break 109 fi 110 rm -f $mp2/???????? 111 touch $mp2/`jot -rc 8 a z | tr -d '\n'` 112 mkdir -p $mp2/dir/dir/dir/dir 113 echo "abc" > $mp2/dir/dir/dir/dir/f 114 while mount | grep -q "on $mp2 "; do umount $mp2; done 115 echo * | grep -q core && break 116 mdconfig -d -u $u2 117 118 # Introduce 5 random single bit errors to the file system image 119 /tmp/flip -n 5 $diskimage 120 121 sync; sleep .1 122 if [ `stat -f%z $diskimage` -gt $max ]; then 123 ls -lh $diskimage 124 truncate -s $max $diskimage 125 else 126 gzip < $diskimage > $backup 127 fi 128 fsync $backup 129 sync; sleep .1 130 131 for i in `jot 5`; do 132 [ $i -gt 2 ] && echo "fsck run #$i" 133 chk $diskimage 134 [ $rerun -eq 1 ] && { reruns=$((reruns + 1)); continue; } 135 [ $clean -eq 1 ] && { cleans=$((cleans + 1)); break; } 136 if [ -f fsck_ffs.core ]; then 137 tstamp=`date +%Y%m%dT%H%M%S` 138 gzip < $backup > /tmp/fsck_ffs.core.diskimage.$tstamp 139 gzip < fsck_ffs.core > /tmp/fsck_ffs.core.$tstamp 140 break 2 141 fi 142 done 143 if [ $clean -eq 1 ]; then 144 fsck_ffs -fy $diskimage > $log 2>&1 145 if grep -q MODIFIED $log; then 146 echo "*** fsck of \"clean\" FS found more issues:" 147 cat $log 148 errors=$((errors + 1)) 149 s=1 150 break 151 fi 152 fi 153 [ $clean -ne 1 ] && break 154 mdconfig -a -t vnode -f $diskimage -u $u2 155done 156for i in `jot 5`; do 157 mount | grep -q "on $mp2 " || break 158 umount $mp2 && break 159 sleep 2 160done 161mdconfig -l | grep -q $u2 && mdconfig -d -u $u2 162 163[ $s -eq 0 ] && rm -f $backup || echo "Preserved $backup due to status code $s" 164cd /tmp 165for i in `jot 5`; do 166 umount $mp1 && break 167 sleep 2 168done 169mdconfig -d -u $u1 170rm -f /tmp/flip 171exit $s 172