From 946b54554e13d6a97940df936123855e0a305abc Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 24 Feb 2023 15:34:34 +0100
Subject: Adding upstream version 4.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/19raid6repair | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 tests/19raid6repair

(limited to 'tests/19raid6repair')

diff --git a/tests/19raid6repair b/tests/19raid6repair
new file mode 100644
index 0000000..26846cc
--- /dev/null
+++ b/tests/19raid6repair
@@ -0,0 +1,56 @@
+number_of_disks=4
+chunksize_in_kib=512
+chunksize_in_b=$[chunksize_in_kib*1024]
+array_data_size_in_kib=$[chunksize_in_kib*(number_of_disks-2)*number_of_disks]
+array_data_size_in_b=$[array_data_size_in_kib*1024]
+devs="$dev1 $dev2 $dev3 $dev4"
+
+# default 2048 sectors
+data_offset_in_kib=$[2048/2]
+
+layouts="ls rs la ra parity-first ddf-zero-restart ddf-N-restart ddf-N-continue \
+	left-asymmetric-6 right-asymmetric-6 left-symmetric-6 \
+	right-symmetric-6 parity-first-6"
+
+for layout in $layouts
+do
+    for failure in "$dev3 3 3 2" "$dev3 3 2 3" "$dev3 3 2 1" "$dev3 3 2 0" \
+		"$dev4 3 3 0" "$dev4 3 3 1" "$dev4 3 3 2" \
+		"$dev1 3 0 1" "$dev1 3 0 2" "$dev1 3 0 3" \
+		"$dev2 3 1 0" "$dev2 3 1 2" "$dev2 3 1 3" ; do
+	    failure_split=( $failure )
+	    device_with_error=${failure_split[0]}
+	    stripe_with_error=${failure_split[1]}
+	    repair_params="$stripe_with_error ${failure_split[2]} ${failure_split[3]}"
+	    start_of_errors_in_kib=$[data_offset_in_kib+chunksize_in_kib*stripe_with_error]
+
+	    # make a raid5 from a file
+	    dd if=/dev/urandom of=/tmp/RandFile bs=1024 count=$array_data_size_in_kib
+	    mdadm -CR $md0 -l6 --layout=$layout -n$number_of_disks -c $chunksize_in_kib $devs
+	    dd if=/tmp/RandFile of=$md0 bs=1024 count=$array_data_size_in_kib
+	    blockdev --flushbufs $md0; sync
+
+	    check wait
+	    blockdev --flushbufs $devs; sync
+	    echo 3 > /proc/sys/vm/drop_caches
+	    cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo sanity cmp failed ; exit 2; }
+
+	    dd if=/dev/urandom of=$device_with_error bs=1024 count=$chunksize_in_kib seek=$start_of_errors_in_kib
+	    blockdev --flushbufs $device_with_error; sync
+	    echo 3 > /proc/sys/vm/drop_caches
+
+	    $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" || { echo should detect errors; exit 2; }
+
+	    $dir/raid6check $md0 repair $repair_params > /dev/null || { echo repair failed; exit 2; }
+	    blockdev --flushbufs $md0 $devs; sync
+	    echo 3 > /proc/sys/vm/drop_caches
+
+	    $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" && { echo errors detected; exit 2; }
+	    cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo cmp failed ; exit 2; }
+
+	    mdadm -S $md0
+	    udevadm settle
+	    sync
+	    echo 3 > /proc/sys/vm/drop_caches
+    done
+done
-- 
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