Add regression test for "prefer" balance algorithm in MIRROR class.

tools/regression/geom_mirror/test-7.sh

@@ -0,0 +1,68 @@
+#!/bin/sh
+# $FreeBSD$
+
+name="test"
+base=`basename $0`
+balance="prefer"
+us0=45
+us1=`expr $us0 + 1`
+us2=`expr $us0 + 2`
+ddbs=2048
+nblocks1=1024
+nblocks2=`expr $nblocks1 / \( $ddbs / 512 \)`
+src=`mktemp /tmp/$base.XXXXXX` || exit 1
+dst=`mktemp /tmp/$base.XXXXXX` || exit 1
+
+dd if=/dev/random of=${src} bs=$ddbs count=$nblocks2 >/dev/null 2>&1
+
+mdconfig -a -t malloc -s `expr $nblocks1 + 1` -u $us0 || exit 1
+mdconfig -a -t malloc -s `expr $nblocks1 + 1` -u $us1 || exit 1
+mdconfig -a -t malloc -s `expr $nblocks1 + 1` -u $us2 || exit 1
+sleep 1
+
+gmirror label -b $balance $name /dev/md${us0} /dev/md${us1} /dev/md${us2} || exit 1
+
+dd if=${src} of=/dev/mirror/${name} bs=$ddbs count=$nblocks2 >/dev/null 2>&1
+
+dd if=/dev/mirror/${name} of=${dst} bs=$ddbs count=$nblocks2 >/dev/null 2>&1
+if [ `md5 -q ${src}` != `md5 -q ${dst}` ]; then
+	echo "FAIL"
+else
+	echo "PASS"
+fi
+
+gmirror remove $name md${us0}
+dd if=/dev/mirror/${name} of=${dst} bs=$ddbs count=$nblocks2 >/dev/null 2>&1
+if [ `md5 -q ${src}` != `md5 -q ${dst}` ]; then
+	echo "FAIL"
+else
+	echo "PASS"
+fi
+
+gmirror remove $name md${us1}
+dd if=/dev/mirror/${name} of=${dst} bs=$ddbs count=$nblocks2 >/dev/null 2>&1
+if [ `md5 -q ${src}` != `md5 -q ${dst}` ]; then
+	echo "FAIL"
+else
+	echo "PASS"
+fi
+
+gmirror remove $name md${us2}
+dd if=/dev/mirror/${name} of=${dst} bs=$ddbs count=$nblocks2 >/dev/null 2>&1
+if [ `md5 -q ${src}` != `md5 -q ${dst}` ]; then
+	echo "FAIL"
+else
+	echo "PASS"
+fi
+
+# mirror/${name} should be removed.
+if [ -c /dev/${name} ]; then
+	echo "FAIL"
+else
+	echo "PASS"
+fi
+
+mdconfig -d -u $us0
+mdconfig -d -u $us1
+mdconfig -d -u $us2
+rm -f ${src} ${dst}