summaryrefslogtreecommitdiff
path: root/tests/19raid6repair
diff options
context:
space:
mode:
Diffstat (limited to 'tests/19raid6repair')
-rw-r--r--tests/19raid6repair47
1 files changed, 47 insertions, 0 deletions
diff --git a/tests/19raid6repair b/tests/19raid6repair
new file mode 100644
index 00000000..ecff2c3a
--- /dev/null
+++ b/tests/19raid6repair
@@ -0,0 +1,47 @@
+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]
+
+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 $md0 -l6 -n$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
+ blockdev --flushbufs $md0 $devs; sync
+ echo 3 > /proc/sys/vm/drop_caches
+done