115 lines
2.5 KiB
Plaintext
115 lines
2.5 KiB
Plaintext
|
|
# Test changing of level, chunksize etc.
|
|
# Create a RAID1, convert to RAID5, add a disk, add another disk
|
|
# convert to RAID6, back to RAID5 and ultimately to RAID1
|
|
|
|
testK=$[64*3*6]
|
|
dd if=/dev/urandom of=/tmp/RandFile bs=1024 count=$testK
|
|
export MDADM_GROW_VERIFY=1
|
|
|
|
dotest() {
|
|
sleep 2
|
|
check wait
|
|
testdev $md0 $1 19968 64 nd
|
|
blockdev --flushbufs $md0
|
|
cmp -s -n $[textK*1024] $md0 /tmp/RandFile || { echo cmp failed; exit 2; }
|
|
# write something new - shift chars 4 space
|
|
tr ' -~' '$-~ -#' < /tmp/RandFile > /tmp/RandFile2
|
|
mv /tmp/RandFile2 /tmp/RandFile
|
|
dd if=/tmp/RandFile of=$md0
|
|
}
|
|
|
|
checkgeo() {
|
|
# check the geometry of an array
|
|
# level raid_disks chunk_size layout
|
|
dev=$1
|
|
shift
|
|
sleep 0.5
|
|
check wait
|
|
sleep 1
|
|
for attr in level raid_disks chunk_size layout
|
|
do
|
|
if [ $# -gt 0 ] ; then
|
|
val=$1
|
|
shift
|
|
if [ " `cat /sys/block/$dev/md/$attr`" != " $val" ]
|
|
then echo "$attr doesn't match for $dev"
|
|
exit 1
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
|
|
bu=/tmp/md-test-backup
|
|
rm -f $bu
|
|
mdadm -CR $md0 -l1 -n2 -x1 $dev0 $dev1 $dev2 -z 19968
|
|
testdev $md0 1 $mdsize1a 64
|
|
dd if=/tmp/RandFile of=$md0
|
|
dotest 1
|
|
|
|
mdadm --grow $md0 -l5 -n3 --chunk 64
|
|
dotest 2
|
|
|
|
mdadm $md0 --add $dev3 $dev4
|
|
mdadm --grow $md0 -n4 --chunk 32
|
|
dotest 3
|
|
|
|
mdadm -G $md0 -l6 --backup-file $bu
|
|
dotest 3
|
|
|
|
mdadm -G /dev/md0 --array-size 39936
|
|
mdadm -G $md0 -n4 --backup-file $bu
|
|
checkgeo md0 raid6 4 $[32*1024]
|
|
dotest 2
|
|
|
|
mdadm -G $md0 -l5 --backup-file $bu
|
|
checkgeo md0 raid5 3 $[32*1024]
|
|
dotest 2
|
|
|
|
mdadm -G /dev/md0 --array-size 19968
|
|
mdadm -G $md0 -n2 --backup-file $bu
|
|
checkgeo md0 raid5 2 $[32*1024]
|
|
dotest 1
|
|
|
|
mdadm -G --level=1 $md0
|
|
dotest 1
|
|
|
|
# now repeat that last few steps only with a degraded array.
|
|
mdadm -S $md0
|
|
mdadm -CR $md0 -l6 -n5 $dev0 $dev1 $dev2 $dev3 $dev4
|
|
dd if=/tmp/RandFile of=$md0
|
|
dotest 3
|
|
|
|
mdadm $md0 --fail $dev0
|
|
|
|
mdadm -G /dev/md0 --array-size 37888
|
|
mdadm -G $md0 -n4 --backup-file $bu
|
|
dotest 2
|
|
checkgeo md0 raid6 4 $[512*1024]
|
|
mdadm $md0 --fail $dev4
|
|
|
|
mdadm $md0 --fail $dev3
|
|
# now double-degraded.
|
|
# switch layout to a DDF layout and back to make sure that works.
|
|
|
|
mdadm -G /dev/md0 --layout=ddf-N-continue --backup-file $bu
|
|
checkgeo md0 raid6 4 $[512*1024] 10
|
|
dotest 2
|
|
mdadm -G /dev/md0 --layout=ra --backup-file $bu
|
|
checkgeo md0 raid6 4 $[512*1024] 1
|
|
dotest 2
|
|
|
|
mdadm -G $md0 -l5 --backup-file $bu
|
|
dotest 2
|
|
|
|
mdadm -G /dev/md0 --array-size 18944
|
|
mdadm -G $md0 -n2 --backup-file $bu
|
|
dotest 1
|
|
checkgeo md0 raid5 2 $[512*1024]
|
|
mdadm $md0 --fail $dev2
|
|
|
|
mdadm -G --level=1 $md0
|
|
dotest 1
|
|
checkgeo md0 raid1 2
|