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imsm_check() {
case $1 in
container )
grep -s " blocks super external:imsm" /proc/mdstat > /dev/null || {
echo >&2 "ERROR correctly formed container not found"; cat /proc/mdstat; exit 1;}
;;
member )
member=$2
num_disks=$3
level=$4
size=$5
offset=$6
err=0
eval `stat -L -c "let major=0x%t; let minor=0x%T;" $member`
sysfs=/sys/dev/block/${major}:${minor}
if [ ! -f ${sysfs}/md/array_state ]; then
echo "member array $member not found" >&2
cat /proc/mdstat >&2
exit 1
fi
for i in `seq 0 $((num_disks-1))`
do
_offset=`cat ${sysfs}/md/rd${i}/offset`
if [ $offset -ne $((_offset/2)) ]; then
echo "offset mismatch expected $offset got $_offset" >&2
err=$((err+1))
fi
_size=`cat ${sysfs}/md/rd${i}/size`
if [ $size -ne $_size ]; then
echo "offset mismatch expected $size got $_size" >&2
err=$((err+1))
fi
done
if [ $err -gt 0 ]; then
echo "$member failed check" >&2
cat /proc/mdstat >&2
mdadm -E /dev/loop0 >&2
exit 1
fi
;;
* ) echo >&2 ERROR unknown check $1 ; exit 1;
esac
}
export IMSM_DEVNAME_AS_SERIAL=1
export IMSM_NO_PLATFORM=1
container=/dev/md/container
member0=/dev/md/vol0
member1=/dev/md/vol1
member2=/dev/md/vol2
member3=/dev/md/vol3
member4=/dev/md/vol4
# create raid arrays with varying degress of overlap
mdadm -CR $container -e imsm -n 6 $dev0 $dev1 $dev2 $dev3 $dev4 $dev5
imsm_check container 6
size=1910
level=1
num_disks=2
mdadm -CR $member0 $dev0 $dev1 -n $num_disks -l $level -z $size
mdadm -CR $member1 $dev1 $dev2 -n $num_disks -l $level -z $size
mdadm -CR $member2 $dev2 $dev3 -n $num_disks -l $level -z $size
mdadm -CR $member3 $dev3 $dev4 -n $num_disks -l $level -z $size
mdadm -CR $member4 $dev4 $dev5 -n $num_disks -l $level -z $size
udevadm settle
offset=0
imsm_check member $member0 $num_disks $level $size $offset
offset=$((offset+size+2048))
imsm_check member $member1 $num_disks $level $size $offset
offset=$((offset+size+2048))
imsm_check member $member2 $num_disks $level $size $offset
# at this point there should be more freespace at the start of the disk
# than the end
offset=0
imsm_check member $member3 $num_disks $level $size $offset
offset=$((offset+size+2048))
imsm_check member $member4 $num_disks $level $size $offset
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