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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 | |
4a3a795a N |
13 | |
14 | # perform test for every layout | |
15 | layouts="ls rs la ra parity-first ddf-zero-restart ddf-N-restart ddf-N-continue \ | |
16 | left-asymmetric-6 right-asymmetric-6 left-symmetric-6 \ | |
17 | right-symmetric-6 parity-first-6" | |
18 | ||
19 | for layout in $layouts | |
20 | do | |
21 | mdadm -CR $md0 -l6 --layout=$layout -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 | check wait | |
25 | blockdev --flushbufs $devs; sync | |
26 | echo 3 > /proc/sys/vm/drop_caches | |
27 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo sanity cmp failed ; exit 2; } | |
28 | ||
29 | # wipe out 5 chunks on each device | |
30 | dd if=/dev/urandom of=$dev0 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*0] | |
31 | dd if=/dev/urandom of=$dev1 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*5] | |
32 | dd if=/dev/urandom of=$dev2 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*10] | |
33 | dd if=/dev/urandom of=$dev3 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*15] | |
34 | dd if=/dev/urandom of=$dev4 bs=1024 count=$[5*chunksize_in_kib] seek=$[data_offset_in_kib+chunksize_in_kib*20] | |
35 | ||
36 | blockdev --flushbufs $devs; sync | |
37 | echo 3 > /proc/sys/vm/drop_caches | |
38 | ||
39 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" || { echo should detect errors; exit 2; } | |
40 | ||
41 | $dir/raid6check $md0 0 0 autorepair > /dev/null || { echo repair failed; exit 2; } | |
42 | blockdev --flushbufs $md0 $devs; sync | |
43 | echo 3 > /proc/sys/vm/drop_caches | |
44 | ||
45 | $dir/raid6check $md0 0 0 2>&1 | grep -qs "Error" && { echo errors detected; exit 2; } | |
46 | cmp -s -n $array_data_size_in_b $md0 /tmp/RandFile || { echo cmp failed ; exit 2; } | |
47 | ||
48 | mdadm -S $md0 | |
49 | done |