freebsd-nq/tests/sys/geom/class/mirror/10_test.sh
Mark Johnston ca623e07ce Add some basic tests for gmirror read and write error handling.
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
2017-12-14 22:11:35 +00:00

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#!/bin/sh
# $FreeBSD$
# Test handling of read errors.
. $(dirname $0)/conf.sh
echo 1..3
set -e
ddbs=2048
regreadfp="debug.fail_point.g_mirror_regular_request_read"
m1=$(mktemp $base.XXXXXX)
m2=$(mktemp $base.XXXXXX)
dd if=/dev/random of=$m1 bs=$ddbs count=1024 >/dev/null 2>&1
dd if=/dev/zero of=$m2 bs=$ddbs count=1024 >/dev/null 2>&1
us0=$(attach_md -t vnode -f $m1)
us1=$(attach_md -t vnode -f $m2)
gmirror label $name /dev/$us0
gmirror insert $name /dev/$us1
devwait
syncwait
tmp1=$(mktemp $base.XXXXXX)
tmp2=$(mktemp $base.XXXXXX)
EIO=5
# gmirror should retry a failed read from the other mirror.
sysctl ${regreadfp}="1*return(${EIO})"
dd if=/dev/mirror/$name of=$tmp1 iseek=256 bs=$ddbs count=1 >/dev/null 2>&1
dd if=/dev/$us1 of=$tmp2 iseek=256 bs=$ddbs count=1 >/dev/null 2>&1
sysctl ${regreadfp}='off'
if cmp -s $tmp1 $tmp2; then
echo "ok 1"
else
echo "not ok 1"
fi
# Make sure that one of the mirrors was marked broken.
genid1=$(gmirror dump /dev/$us0 | awk '/^[[:space:]]*genid: /{print $2}')
genid2=$(gmirror dump /dev/$us1 | awk '/^[[:space:]]*genid: /{print $2}')
if [ $genid1 -eq $(($genid2 + 1)) -o $genid2 -eq $(($genid1 + 1)) ]; then
echo "ok 2"
else
echo "not ok 2"
fi
# Force a retaste of the disconnected component.
if [ $(gmirror status -s $name | awk '{print $3}') = $us0 ]; then
detach_md $us1
us1=$(attach_md -t vnode -f $m2)
else
detach_md $us0
us0=$(attach_md -t vnode -f $m1)
fi
# Make sure that the component wasn't re-added to the gmirror.
if [ $(gmirror status -s $name | wc -l) -eq 1 ]; then
echo "ok 3"
else
echo "not ok 3"
fi
rm -f $m1 $m2 $tmp1 $tmp2