tests: add some simple data integrity tests for raid5/raid6

Make sure the data is preserved even when the array is degraded.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/01r5integ b/tests/01r5integ
new file mode 100644
index 00000000..714a57fb
--- /dev/null
+++ b/tests/01r5integ
@@ -0,0 +1,29 @@
+
+# Check integrity of raid5 in degraded mode
+# Create a 4 disk raid5, create a filesystem and
+# sh1sum it with each device failed
+
+for layout in ls rs la ra
+do
+  mdadm -CR $md0 -l5 --layout $layout -n4 $dev0 $dev1 $dev2 $dev3
+  check wait
+  tar cf - /etc > $md0
+  sum=`sha1sum $md0`
+
+  for i in $dev0 $dev1 $dev2 $dev3
+  do
+    mdadm $md0 -f $i
+    mdadm $md0 -r $i
+    blockdev --flushbufs $md0
+    sum1=`sha1sum $md0`
+    if [ $sum != $sum1 ]
+    then
+     echo $sum does not matc $sum1 with $i missing
+     exit 1
+    fi
+    mdadm $md0 -a $i
+   check wait
+  done
+  mdadm -S $md0
+done
+