#!/bin/bash

#set -x

diskarray=(`cat /proc/diskstats |grep -E "\bsd[a-z]\b|\bxvd[a-z]\b|\bvd[a-z]\b"|awk '{print $3}'|sort|uniq  2>/dev/null`)

length=${#diskarray[@]} ##diskarray[@] --->数组diskcarray的个数

printf "{\n"

printf  '\t'"\"data\":["

for ((i=0;i<$length;i++))

do

        printf '\n\t\t{'

        printf "\"{#DISK_NAME}\":\"${diskarray[$i]}\"}"

        if [ $i -lt $[$length-1] ];then

                printf ','

        fi

done

printf  "\n\t]\n"

printf "}\n"