[PATCH mdadm v4 6/7] tests/00raid5-zero: Introduce test to exercise --write-zeros.

[Logan Gunthorpe <logang@deltatee.com>]

Attempt to create a raid5 array with --write-zeros. If it is successful
check the array to ensure it is in sync.

If it is unsuccessful and an unsupported error is printed, skip the
test.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
 tests/00raid5-zero | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 tests/00raid5-zero

diff --git a/tests/00raid5-zero b/tests/00raid5-zero
new file mode 100644
index 000000000000..7d0f05a12539
--- /dev/null
+++ b/tests/00raid5-zero
@@ -0,0 +1,12 @@
+
+if mdadm -CfR $md0 -l 5 -n3 $dev0 $dev1 $dev2 --write-zeroes ; then
+  check nosync
+  echo check > /sys/block/md0/md/sync_action;
+  check wait
+elif grep "zeroing [^ ]* failed: Operation not supported" \
+     $targetdir/stderr; then
+  echo "write-zeros not supported, skipping"
+else
+  echo >&2 "ERROR: mdadm return failure without not supported message"
+  exit 1
+fi
-- 
2.30.2