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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 RB |
10 | |
11 | 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" "$dev4 3 3 2" \ | |
12 | "$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 | |
13 | failure_split=( $failure ) | |
14 | device_with_error=${failure_split[0]} | |
15 | stripe_with_error=${failure_split[1]} | |
16 | repair_params="$stripe_with_error ${failure_split[2]} ${failure_split[3]}" | |
17 | start_of_errors_in_kib=$[data_offset_in_kib+chunksize_in_kib*stripe_with_error] | |
18 | ||
19 | # make a raid5 from a file | |
20 | dd if=/dev/urandom of=/tmp/RandFile bs=1024 count=$array_data_size_in_kib | |
21 | mdadm -CR $md0 -l6 -n$number_of_disks -c $chunksize_in_kib $devs | |
22 | dd if=/tmp/RandFile of=$md0 bs=1024 count=$array_data_size_in_kib | |
23 | blockdev --flushbufs $md0; sync | |
24 | ||
25 | check wait | |
26 | blockdev --flushbufs $devs; sync | |
27 | echo 3 > /proc/sys/vm/drop_caches | |
28 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo sanity cmp failed ; exit 2; } | |
29 | ||
30 | dd if=/dev/urandom of=$device_with_error bs=1024 count=$chunksize_in_kib seek=$start_of_errors_in_kib | |
31 | blockdev --flushbufs $device_with_error; sync | |
32 | echo 3 > /proc/sys/vm/drop_caches | |
33 | ||
34 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" || { echo should detect errors; exit 2; } | |
35 | ||
36 | $dir/raid6check $md0 repair $repair_params > /dev/null || { echo repair failed; exit 2; } | |
37 | blockdev --flushbufs $md0 $devs; sync | |
38 | echo 3 > /proc/sys/vm/drop_caches | |
39 | ||
40 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" && { echo errors detected; exit 2; } | |
41 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo cmp failed ; exit 2; } | |
42 | ||
43 | mdadm -S $md0 | |
44 | udevadm settle | |
45 | blockdev --flushbufs $md0 $devs; sync | |
46 | echo 3 > /proc/sys/vm/drop_caches | |
47 | done |