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# Demonstrate how the "CLEAN" message and the exit code can be misleading 31 32# "panic: softdep_update_inodeblock inconsistent ip ..." seen: 33# https://people.freebsd.org/~pho/stress/log/log0421.txt 34# https://people.freebsd.org/~pho/fsck11.sh.diskimage.20230228T064402.gz 35 36. ../default.cfg 37 38[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 39 40cc -o /tmp/flip -Wall -Wextra -O2 ../tools/flip.c || exit 1 41 42set -e 43prog=$(basename "$0" .sh) 44u1=$mdstart 45u2=$((mdstart + 1)) 46mp1=${mntpoint}$u1 47mp2=${mntpoint}$u2 48mkdir -p $mp1 $mp2 49log=$mp1/$prog.sh.log 50diskimage=$mp1/$prog.sh.diskimage 51backup=/tmp/$prog.sh.diskimage.`date +%Y%m%dT%H%M%S`.gz 52cleans=0 53reruns=0 54 55# Pick a random newfs flag 56newfs_flags=$(echo "" "-U" "-O1" | awk -v N=`jot -r 1 1 3` '{print $N}') 57[ $# -eq 1 ] && newfs_flags="$1" # or use script argument 58max=$((2 * 1024 * 1024)) 59[ "$newfs_flags" = "-j" ] && max=$((20 * 1024 * 1024)) # Make room for the journal file 60 61mount | grep "on $mp1 " | grep -q /dev/md && umount -f $mp1 62[ -c /dev/md$u1 ] && mdconfig -d -u $u1 63mdconfig -a -t swap -s 1g -u $u1 64newfs $newfs_flags -n /dev/md$u1 > /dev/null 65mount /dev/md$u1 $mp1 66 67[ -c /dev/md$u2 ] && mdconfig -d -u $u2 68dd if=/dev/zero of=$diskimage bs=$max count=1 status=none 69mdconfig -a -t vnode -f $diskimage -u $u2 70backups=`newfs -N $newfs_flags md$u2 | grep -A1 "super-block backups" | \ 71 tail -1 | sed 's/,//g'` 72echo "newfs $newfs_flags -n md$u2" 73newfs $newfs_flags -n md$u2 > /dev/null 74set +e 75 76chk() { 77 local i 78 79 clean=0 80 rerun=0 81 fsck_ffs -fy $1 > $log 2>&1 82 r=$? 83 if grep -qiE "super-?block.*failed" $log; then 84 for b in $backups; do 85 echo "fsck_ffs -b $b -fy $1" 86 fsck_ffs -b $b -fy $1 > $log 2>&1 87 r=$? 88 grep -qiE "super-?block.*failed" $log || 89 break 90 echo "Checking next SB" 91 done 92 usedasb=1 93 else 94 usedasb=0 95 fi 96 LANG=C egrep -q "[A-Z][A-Z]" $log && clean=0 97 grep -Eq "IS CLEAN|MARKED CLEAN" $log && clean=1 98 grep -q RERUN $log && rerun=1 99 [ $r -ne 0 -a $clean -eq 1 ] && echo "Exit code $r w/ clean == 1" 100} 101 102cd $mp1 103clean=0 104errors=0 105s=0 106start=`date +%s` 107while [ $((`date +%s` - start)) -lt 300 ]; do 108 mount /dev/md$u2 $mp2 || break 109 if ! ls -lR $mp2 > /dev/null; then 110 s=102 111 echo "ls failed"; grep "core dumped" /var/log/messages | tail -1 112 break 113 fi 114 115 find $mp2 -type f | xargs cat > /dev/null 116 for j in `jot 9`; do 117 rm -rf $mp2/$j 118 mkdir $mp2/$j 119 jot 10 | xargs -P0 -I% cp /etc/group $mp2/$j/% 120 done 2>/dev/null 121 122 while mount | grep -q "on $mp2 "; do umount $mp2; done 123 echo * | grep -q core && break 124 mdconfig -d -u $u2 125 126 # Introduce 5 random single bit errors to the file system image 127 /tmp/flip -n 5 $diskimage 128 129 if [ `stat -f%z $diskimage` -gt $max ]; then 130 ls -lh $diskimage 131 truncate -s $max $diskimage 132 else 133 gzip < $diskimage > $backup 134 fi 135 fsync $backup 136 sync; sleep 1 137 138 [ "$newfs_flags" = "-j" ] && 139 fsck -fy $diskimage > $log 2>&1 # process the journal file 140 for i in `jot 5`; do 141 [ $i -gt 2 ] && echo "fsck run #$i" 142 chk $diskimage 143 [ $rerun -eq 1 ] && { reruns=$((reruns + 1)); continue; } 144 [ $clean -eq 1 ] && { cleans=$((cleans + 1)); break; } 145 if [ -f fsck_ffs.core ]; then 146 tstamp=`date +%Y%m%dT%H%M%S` 147 gzip < $backup > /tmp/fsck_ffs.core.diskimage.$tstamp 148 gzip < fsck_ffs.core > /tmp/fsck_ffs.core.$tstamp 149 break 2 150 fi 151 done 152 [ $clean -ne 1 ] && { s=99; break; } # broken image? 153 mdconfig -a -t vnode -f $diskimage -u $u2 154done 155for i in `jot 5`; do 156 mount | grep -q "on $mp2 " || break 157 umount $mp2 && break 158 sleep 2 159done 160mdconfig -l | grep -q $u2 && mdconfig -d -u $u2 161 162[ $s -eq 0 ] && rm -f $backup || echo "Preserved $backup due to status code $s" 163cd /tmp 164for i in `jot 5`; do 165 umount $mp1 && break 166 sleep 2 167done 168mdconfig -d -u $u1 169rm -f /tmp/flip 170exit $s 171