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Commit | Line | Data |
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8a63c731 RB |
1 | number_of_disks=5 |
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=$[array_data_size_in_kib*1024] | |
6 | devs="$dev0 $dev1 $dev2 $dev3 $dev4" | |
7 | ||
240cb5a4 N |
8 | # default 2048 sectors |
9 | data_offset_in_kib=$[2048/2] | |
8a63c731 RB |
10 | |
11 | # make a raid5 from a file | |
12 | dd if=/dev/urandom of=/tmp/RandFile bs=1024 count=$array_data_size_in_kib | |
13 | mdadm -CR $md0 -l6 -n$number_of_disks -c $chunksize_in_kib $devs | |
14 | dd if=/tmp/RandFile of=$md0 bs=1024 count=$array_data_size_in_kib | |
15 | blockdev --flushbufs $md0; sync | |
16 | check wait | |
17 | blockdev --flushbufs $devs; sync | |
18 | echo 3 > /proc/sys/vm/drop_caches | |
19 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo sanity cmp failed ; exit 2; } | |
20 | ||
21 | # wipe out 5 chunks on each device | |
22 | dd if=/dev/urandom of=$dev0 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*0] | |
23 | dd if=/dev/urandom of=$dev1 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*5] | |
24 | dd if=/dev/urandom of=$dev2 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*10] | |
25 | dd if=/dev/urandom of=$dev3 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*15] | |
26 | dd if=/dev/urandom of=$dev4 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*20] | |
27 | ||
28 | blockdev --flushbufs $devs; sync | |
29 | echo 3 > /proc/sys/vm/drop_caches | |
30 | ||
31 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" || { echo should detect errors; exit 2; } | |
32 | ||
33 | $dir/raid6check $md0 0 0 autorepair > /dev/null || { echo repair failed; exit 2; } | |
34 | blockdev --flushbufs $md0 $devs; sync | |
35 | echo 3 > /proc/sys/vm/drop_caches | |
36 | ||
37 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" && { echo errors detected; exit 2; } | |
38 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo cmp failed ; exit 2; } | |
39 | ||
40 | mdadm -S $md0 | |
41 | udevadm settle | |
42 | blockdev --flushbufs $md0 $devs; sync | |
43 | echo 3 > /proc/sys/vm/drop_caches |