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Commit | Line | Data |
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f2e29ad6 RB |
1 | number_of_disks=4 |
2 | chunksize_in_kib=512 | |
3 | chunksize_in_b=$[chunksize_in_kib*1024] | |
4 | array_data_size_in_kib=$[chunksize_in_kib*(number_of_disks-2)*number_of_disks] | |
5 | array_data_size_in_b=$[array_data_size_in_kib*1024] | |
6 | devs="$dev1 $dev2 $dev3 $dev4" | |
7 | ||
240cb5a4 N |
8 | # default 2048 sectors |
9 | data_offset_in_kib=$[2048/2] | |
f2e29ad6 | 10 | |
4a3a795a N |
11 | layouts="ls rs la ra parity-first ddf-zero-restart ddf-N-restart ddf-N-continue \ |
12 | left-asymmetric-6 right-asymmetric-6 left-symmetric-6 \ | |
13 | right-symmetric-6 parity-first-6" | |
14 | ||
15 | for layout in $layouts | |
16 | do | |
17 | for failure in "$dev3 3 3 2" "$dev3 3 2 3" "$dev3 3 2 1" "$dev3 3 2 0" \ | |
18 | "$dev4 3 3 0" "$dev4 3 3 1" "$dev4 3 3 2" \ | |
19 | "$dev1 3 0 1" "$dev1 3 0 2" "$dev1 3 0 3" \ | |
20 | "$dev2 3 1 0" "$dev2 3 1 2" "$dev2 3 1 3" ; do | |
21 | failure_split=( $failure ) | |
22 | device_with_error=${failure_split[0]} | |
23 | stripe_with_error=${failure_split[1]} | |
24 | repair_params="$stripe_with_error ${failure_split[2]} ${failure_split[3]}" | |
25 | start_of_errors_in_kib=$[data_offset_in_kib+chunksize_in_kib*stripe_with_error] | |
26 | ||
27 | # make a raid5 from a file | |
28 | dd if=/dev/urandom of=/tmp/RandFile bs=1024 count=$array_data_size_in_kib | |
29 | mdadm -CR $md0 -l6 --layout=$layout -n$number_of_disks -c $chunksize_in_kib $devs | |
30 | dd if=/tmp/RandFile of=$md0 bs=1024 count=$array_data_size_in_kib | |
31 | blockdev --flushbufs $md0; sync | |
32 | ||
33 | check wait | |
34 | blockdev --flushbufs $devs; sync | |
35 | echo 3 > /proc/sys/vm/drop_caches | |
36 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo sanity cmp failed ; exit 2; } | |
37 | ||
38 | dd if=/dev/urandom of=$device_with_error bs=1024 count=$chunksize_in_kib seek=$start_of_errors_in_kib | |
39 | blockdev --flushbufs $device_with_error; sync | |
40 | echo 3 > /proc/sys/vm/drop_caches | |
41 | ||
42 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" || { echo should detect errors; exit 2; } | |
43 | ||
44 | $dir/raid6check $md0 repair $repair_params > /dev/null || { echo repair failed; exit 2; } | |
45 | blockdev --flushbufs $md0 $devs; sync | |
46 | echo 3 > /proc/sys/vm/drop_caches | |
47 | ||
48 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" && { echo errors detected; exit 2; } | |
49 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo cmp failed ; exit 2; } | |
50 | ||
51 | mdadm -S $md0 | |
52 | udevadm settle | |
53 | sync | |
54 | echo 3 > /proc/sys/vm/drop_caches | |
55 | done | |
f2e29ad6 | 56 | done |