[PATCH 4/6] test: clear the superblock at every iteration in 02lineargrow

[Sudhakar Panneerselvam <sudhakar.panneerselvam@xxxxxxxxxx>]

This fixes 02lineargrow test as prior metadata causes --add operation
to misbehave.

Signed-off-by: Sudhakar Panneerselvam <sudhakar.panneerselvam@xxxxxxxxxx>
---
 tests/02lineargrow | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/02lineargrow b/tests/02lineargrow
index e05c219d113a..595bf9f20802 100644
--- a/tests/02lineargrow
+++ b/tests/02lineargrow
@@ -20,4 +20,6 @@ do
   testdev $md0 3 $sz 1
 
   mdadm -S $md0
+  mdadm --zero /dev/loop2
+  mdadm --zero /dev/loop3
 done
-- 
1.8.3.1