1#!/bin/sh 2# $FreeBSD$ 3 4# Regression test for r306743. 5 6. `dirname $0`/conf.sh 7 8echo 1..1 9 10ddbs=2048 11m1=`mktemp $base.XXXXXX` || exit 1 12m2=`mktemp $base.XXXXXX` || exit 1 13m3=`mktemp $base.XXXXXX` || exit 1 14 15dd if=/dev/zero of=$m1 bs=$ddbs count=1024 >/dev/null 2>&1 16dd if=/dev/zero of=$m2 bs=$ddbs count=1024 >/dev/null 2>&1 17dd if=/dev/zero of=$m3 bs=$ddbs count=1024 >/dev/null 2>&1 18 19us0=$(attach_md -t vnode -f $m1) || exit 1 20us1=$(attach_md -t vnode -f $m2) || exit 1 21us2=$(attach_md -t vnode -f $m3) || exit 1 22 23gmirror label $name /dev/$us0 /dev/$us1 || exit 1 24devwait 25 26# Break one of the mirrors by forcing a single metadata write error. 27# When dd closes the mirror provider, gmirror will attempt to mark the mirrors 28# clean, and will kick one of the mirrors out upon hitting the error. 29sysctl debug.fail_point.g_mirror_metadata_write="1*return(5)[pid $(gmirror_worker_pid)]" || exit 1 30dd if=/dev/random of=/dev/mirror/$name bs=$ddbs count=1 >/dev/null 2>&1 31sysctl debug.fail_point.g_mirror_metadata_write='off' || exit 1 32 33# Replace the broken mirror, and then stop the gmirror. 34gmirror forget $name || exit 1 35gmirror insert $name /dev/$us2 || exit 1 36syncwait 37gmirror stop $name || exit 1 38 39# Restart the gmirror on the original two mirrors. One of them is broken, 40# so we should end up with a degraded gmirror. 41gmirror activate $name /dev/$us0 /dev/$us1 || exit 1 42devwait 43dd if=/dev/random of=/dev/mirror/$name bs=$ddbs count=1 >/dev/null 2>&1 44 45# Re-add the replacement mirror and verify the two mirrors are synchronized. 46# Destroy the gmirror first so that the mirror metadata is wiped; otherwise 47# the metadata blocks will fail the comparison. It would be nice to do this 48# with a "gmirror verify" command instead. 49gmirror activate $name /dev/$us2 || exit 1 50syncwait 51gmirror destroy $name || exit 1 52if cmp -s $m1 $m3; then 53 echo "ok 1" 54else 55 echo "not ok 1" 56fi 57 58rm -f $m1 $m2 $m3 59