1 files changed, 83 insertions, 0 deletions
diff --git a/tests/sys/geom/class/mirror/11_test.sh b/tests/sys/geom/class/mirror/11_test.sh
new file mode 100644
index 000000000000..0e498ae03d15
--- /dev/null
+++ b/tests/sys/geom/class/mirror/11_test.sh
@@ -0,0 +1,83 @@
+#!/bin/sh
+
+# Test handling of read errors.
+
+. $(dirname $0)/conf.sh
+
+echo 1..4
+
+set -e
+
+ddbs=2048
+regreadfp="debug.fail_point.g_mirror_regular_request_read"
+m1=$(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
+
+attach_md us0 -t vnode -f $m1
+attach_md us1 -t vnode -f $m2
+
+gmirror label $name /dev/$us0
+gmirror insert $name /dev/$us1
+devwait
+syncwait
+
+tmp1=$(mktemp $base.XXXXXX)
+tmp2=$(mktemp $base.XXXXXX)
+
+ENXIO=6
+# gmirror has special handling for ENXIO. It does not mark the failed component
+# as broken, allowing it to rejoin the mirror automatically when it appears.
+sysctl ${regreadfp}="1*return(${ENXIO})[pid $(gmirror_worker_pid)]"
+dd if=/dev/mirror/$name of=$tmp1 iseek=512 bs=$ddbs count=1 >/dev/null 2>&1
+dd if=/dev/$us1 of=$tmp2 iseek=512 bs=$ddbs count=1 >/dev/null 2>&1
+sysctl ${regreadfp}='off'
+
+if cmp -s $tmp1 $tmp2; then
+	echo "ok 1"
+else
+	echo "not ok 1"
+fi
+
+# Verify that the genids still match after ENXIO.
+genid1=$(gmirror dump /dev/$us0 | awk '/^[[:space:]]*genid: /{print $2}')
+genid2=$(gmirror dump /dev/$us1 | awk '/^[[:space:]]*genid: /{print $2}')
+if [ $genid1 -eq $genid2 ]; then
+	echo "ok 2"
+else
+	echo "not ok 2"
+fi
+
+# Trigger a syncid bump.
+dd if=/dev/zero of=/dev/mirror/$name bs=$ddbs count=1 >/dev/null 2>&1
+
+# The ENXIO+write should have caused a syncid bump.
+syncid1=$(gmirror dump /dev/$us0 | awk '/^[[:space:]]*syncid: /{print $2}')
+syncid2=$(gmirror dump /dev/$us1 | awk '/^[[:space:]]*syncid: /{print $2}')
+if [ $syncid1 -eq $(($syncid2 + 1)) -o $syncid2 -eq $(($syncid1 + 1)) ]; then
+	echo "ok 3"
+else
+	echo "not ok 3"
+fi
+
+# Force a retaste of the disconnected component.
+if [ $(gmirror status -s $name | awk '{print $3}') = $us0 ]; then
+	detach_md $us1
+	attach_md us1 -t vnode -f $m2
+else
+	detach_md $us0
+	attach_md us0 -t vnode -f $m1
+fi
+
+# Make sure that the retaste caused the mirror to automatically be re-added.
+if [ $(gmirror status -s $name | wc -l) -eq 2 ]; then
+	echo "ok 4"
+else
+	echo "not ok 4"
+fi
+
+syncwait
+
+rm -f $m1 $m2 $tmp1 $tmp2