From c6c7bce5a3064ac9d2956ae42ecab27f2e33dc2b Mon Sep 17 00:00:00 2001
From: Yu Kuai <yukuai3@huawei.com>
Date: Mon, 29 May 2023 21:28:26 +0800
Subject: [PATCH 151/165] tests: add a regression test for raid456 deadlock
 again

This is a regression test for commit ("md/raid5: fix a deadlock in the
case that reshape is interrupted").

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
---
 tests/25raid456-reshape-deadlock | 34 ++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 tests/25raid456-reshape-deadlock

diff --git a/tests/25raid456-reshape-deadlock b/tests/25raid456-reshape-deadlock
new file mode 100644
index 00000000..bfa0cc56
--- /dev/null
+++ b/tests/25raid456-reshape-deadlock
@@ -0,0 +1,34 @@
+devs="$dev0 $dev1 $dev2"
+
+set_up_test()
+{
+	mdadm -Cv -R -n 3 -l5 $md0 $devs --size=50M || die "create array failed"
+	mdadm -a $md0 $dev3 || die "failed to bind new disk to array"
+	echo 1000 > /sys/block/md0/md/sync_speed_max
+}
+
+clean_up_test()
+{
+	echo idle > /sys/block/md0/md/sync_action
+	mdadm -S $md0
+}
+
+trap 'clean_up_test' EXIT
+
+set_up_test || die "set up test failed"
+
+# trigger reshape
+mdadm --grow -l 6 $md0
+sleep 1
+
+# stop reshape
+echo frozen > /sys/block/md0/md/sync_action
+
+# read accross reshape
+dd if=$md0 of=/dev/NULL bs=1m count=100 iflag=direct &> /dev/null &
+sleep 2
+
+# suspend array
+echo 1 > /sys/block/md0/md/suspend_lo
+
+exit 0
-- 
2.40.1