mdadm/test: add new testcase for testing readonly/readwrite

This is a test case for testing --readonly and
--readwrite feature, it covers common metadata
versions and raid levels.

Signed-off-by: Zhilong Liu <zlliu@suse.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

diff --git a/tests/00readonly b/tests/00readonly
new file mode 100644 (file)
index 0000000..28b0fa1
--- /dev/null
+++ b/tests/00readonly
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+for metadata in 0.9 1.0 1.1 1.2
+do
+       for level in linear raid0 raid1 raid4 raid5 raid6 raid10
+       do
+               mdadm -CR $md0 -l $level -n 4 --metadata=$metadata \
+                       $dev1 $dev2 $dev3 $dev4 --assume-clean
+               check nosync
+               check $level
+               mdadm -ro $md0
+               check readonly
+               state=$(cat /sys/block/md0/md/array_state)
+               [ "$state" == "readonly" ] ||
+                       die "array_state should be 'readonly', but is $state"
+               mdadm -w $md0
+               check $level
+               mdadm -S $md0
+       done
+done
+
+exit 0