Add the undocumented -R option to disable randomness for regression-testing.

Add a couple of simple regression tests accessible with "make test", they
depend on the md(4) driver.

FYI I have also tried running the test against a week old newfs and it
passed.

1 files changed, 27 insertions, 0 deletions

diff --git a/sbin/newfs/runtest01.sh b/sbin/newfs/runtest01.sh
new file mode 100644
index 0000000..4712832
--- /dev/null
+++ b/sbin/newfs/runtest01.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+# $FreeBSD$
+
+set -e
+
+MD=99
+ME=98
+s=1m
+mdconfig -d -u $MD || true
+mdconfig -d -u $ME || true
+mdconfig -a -t malloc -s $s -u $MD
+mdconfig -a -t malloc -s $s -u $ME
+disklabel -r -w md$MD auto
+disklabel -r -w md$ME auto
+./newfs -R /dev/md${MD}c
+./newfs -R /dev/md${ME}c
+if cmp /dev/md${MD}c /dev/md${ME}c ; then
+	echo "Test passed"
+	e=0
+else
+	echo "Test failed"
+	e=1
+fi
+mdconfig -d -u $MD || true
+mdconfig -d -u $ME || true
+exit $e
+