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, 19 insertions, 0 deletions

diff --git a/sbin/newfs/runtest00.sh b/sbin/newfs/runtest00.sh
new file mode 100644
index 0000000..a95dbcc
--- /dev/null
+++ b/sbin/newfs/runtest00.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+# $FreeBSD$
+
+set -e
+
+MD=99
+(
+for s in 1m 4m 60m 120m 240m 1g
+do
+	(
+	mdconfig -d -u $MD || true
+	mdconfig -a -t malloc -s $s -u $MD
+	disklabel -r -w md$MD auto
+	./newfs -R /dev/md${MD}c
+	) 1>&2
+	md5 < /dev/md${MD}c
+done
+mdconfig -d -u $MD 1>&2 || true
+)