Add test for stoping and restarting a raid5 reshape.

There was a kernel bug with stopping and restarting
raid5 recently.  So add a test to check for it.

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/07reshape5intr b/tests/07reshape5intr
new file mode 100644
index 00000000..e2a3560c
--- /dev/null
+++ b/tests/07reshape5intr
@@ -0,0 +1,33 @@
+
+#
+# test interrupting and restartign raid5 reshape.
+set -x
+devs="$dev1"
+st=UU
+for disks in 2 3 4 5
+do
+  eval devs=\"$devs \$dev$disks\"
+  st=U$st
+  for d in $devs
+  do dd if=/dev/urandom of=$d bs=1024 || true
+  done
+
+  $mdadm -CR $md0 -amd -l5 -n$disks --assume-clean $devs
+  $mdadm $md0 --add $dev6
+  echo 20 > /proc/sys/dev/raid/speed_limit_max
+  $mdadm --grow $md0 -n $[disks+1]
+  check reshape
+  check state $st
+  $mdadm --stop $md0
+  $mdadm --assemble $md0 $devs $dev6
+  check reshape
+  echo 2000 > /proc/sys/dev/raid/speed_limit_max
+  check wait
+  echo check > /sys/block/md0/md/sync_action
+  check wait
+  mm=`cat /sys/block/md0/md/mismatch_cnt`
+  if [ $mm -gt 0 ]
+  then echo >&2 "ERROR mismatch_cnt non-zero : $mm" ; exit 1
+  fi
+  $mdadm -S $md0
+done