1#!/bin/sh 2# $FreeBSD$ 3 4# Test handling of read errors. 5 6. $(dirname $0)/conf.sh 7 8echo 1..4 9 10set -e 11 12ddbs=2048 13regreadfp="debug.fail_point.g_mirror_regular_request_read" 14m1=$(mktemp $base.XXXXXX) 15m2=$(mktemp $base.XXXXXX) 16 17dd if=/dev/random of=$m1 bs=$ddbs count=1024 >/dev/null 2>&1 18dd if=/dev/zero of=$m2 bs=$ddbs count=1024 >/dev/null 2>&1 19 20us0=$(attach_md -t vnode -f $m1) 21us1=$(attach_md -t vnode -f $m2) 22 23gmirror label $name /dev/$us0 24gmirror insert $name /dev/$us1 25devwait 26syncwait 27 28tmp1=$(mktemp $base.XXXXXX) 29tmp2=$(mktemp $base.XXXXXX) 30 31ENXIO=6 32# gmirror has special handling for ENXIO. It does not mark the failed component 33# as broken, allowing it to rejoin the mirror automatically when it appears. 34sysctl ${regreadfp}="1*return(${ENXIO})" 35dd if=/dev/mirror/$name of=$tmp1 iseek=512 bs=$ddbs count=1 >/dev/null 2>&1 36dd if=/dev/$us1 of=$tmp2 iseek=512 bs=$ddbs count=1 >/dev/null 2>&1 37sysctl ${regreadfp}='off' 38 39if cmp -s $tmp1 $tmp2; then 40 echo "ok 1" 41else 42 echo "not ok 1" 43fi 44 45# Verify that the genids still match after ENXIO. 46genid1=$(gmirror dump /dev/$us0 | awk '/^[[:space:]]*genid: /{print $2}') 47genid2=$(gmirror dump /dev/$us1 | awk '/^[[:space:]]*genid: /{print $2}') 48if [ $genid1 -eq $genid2 ]; then 49 echo "ok 2" 50else 51 echo "not ok 2" 52fi 53 54# Trigger a syncid bump. 55dd if=/dev/zero of=/dev/mirror/$name bs=$ddbs count=1 >/dev/null 2>&1 56 57# The ENXIO+write should have caused a syncid bump. 58syncid1=$(gmirror dump /dev/$us0 | awk '/^[[:space:]]*syncid: /{print $2}') 59syncid2=$(gmirror dump /dev/$us1 | awk '/^[[:space:]]*syncid: /{print $2}') 60if [ $syncid1 -eq $(($syncid2 + 1)) -o $syncid2 -eq $(($syncid1 + 1)) ]; then 61 echo "ok 3" 62else 63 echo "not ok 3" 64fi 65 66# Force a retaste of the disconnected component. 67if [ $(gmirror status -s $name | awk '{print $3}') = $us0 ]; then 68 detach_md $us1 69 us1=$(attach_md -t vnode -f $m2) 70else 71 detach_md $us0 72 us0=$(attach_md -t vnode -f $m1) 73fi 74 75# Make sure that the retaste caused the mirror to automatically be re-added. 76if [ $(gmirror status -s $name | wc -l) -eq 2 ]; then 77 echo "ok 4" 78else 79 echo "not ok 4" 80fi 81 82syncwait 83 84rm -f $m1 $m2 $tmp1 $tmp2 85