imsm_check() {
    udevadm settle
    case $1 in
    container )
        grep -s "blocks super external:imsm" /proc/mdstat > /dev/null || {
            echo >&2 "**Fatal** Correctly formed container not found"; cat /proc/mdstat; exit 1; }
        ;;
    member )
        t_member=$2
        t_num_disks=$3
        t_level=$4
        t_rd_size=$5
        t_size=$6
        t_offset=$7
        t_chunk=$8

	if [ $t_level -ne 1 ]; then
	   t_rd_size=$((t_rd_size & ~(t_chunk - 1)))
	else
	   t_chunk=64
	fi
	t_size=$((t_size/1024))
	t_size=$((t_size*1024))
        err=0

        eval `stat -L -c "let major=0x%t; let minor=0x%T;" $t_member`
        sysfs=/sys/dev/block/${major}:${minor}
        if [ ! -f ${sysfs}/md/array_state ]; then
            echo "**Fatal**: Array member $t_member not found" >&2; cat /proc/mdstat >&2; exit 1
        fi
        _chunk=`cat ${sysfs}/md/chunk_size`
        if [ $t_chunk -ne $((_chunk/1024)) ]; then
            echo "**Error**: Chunk size mismatch - expected $t_chunk, actual $_chunk" >&2
            err=$((err + 1))
        fi
        for i in `seq 0 $((t_num_disks - 1))`; do
	    _offset=`cat ${sysfs}/md/rd${i}/offset`
	    if [ $t_offset -ne $((_offset / 2)) ]; then
		echo "**Error**: Offset mismatch - expected $t_offset, actual $_offset" >&2
		err=$((err + 1))
	    fi
	    _rd_size=`cat ${sysfs}/md/rd${i}/size`
	    if [ $t_rd_size -ne $_rd_size ]; then
		echo "**Error**: Component size mismatch - expected $t_rd_size, actual $_rd_size" >&2
		err=$((err + 1))
	    fi
        done
        _size=`cat ${sysfs}/md/array_size`
        if [ $t_size -ne $_size ]; then
            echo "**Error**: Array size mismatch - expected $t_size, actual $_size" >&2
            err=$((err + 1))
        fi
        if [ $err -gt 0 ]; then
            echo "$t_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_NO_PLATFORM=1
export IMSM_DEVNAME_AS_SERIAL=1
export IMSM_TEST_OROM=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