请问这个脚本哪里有错?

djcat

[PHP]#!/bin/bash
mkdir /istorage_install
mkdir /etc/istorage
usage()
{
echo "Usage: "
echo "install  diskname  disk_cache_size(GB)"
echo "example:"
echo "install  hda  8"
echo "install  sda  0"
echo "install  sda  20"
echo "install  sda  all"
exit 0
}

run()
{
        CMDLINE=$1
        $CMDLINE
        RESULT=$?
        if [ $RESULT -eq 0 ]; then
                echo "Success: $CMDLINE "
        else
                echo "Error: $CMDLINE failed, exit $RESULT "
                umount $DISK_PARTION
                exit $RESULT
        fi
}

my_cat()
{
#        CMDLINE1=$1
       
        echo "$1" >> /istorage_install/set_cache       
       
}

clear_disk()
{
my_cat "/sbin/fdisk /dev/$1 << EOF"
my_cat "d"
my_cat "8"
my_cat ""
my_cat "d"
my_cat "7"
my_cat ""
my_cat "d"
my_cat "6"
my_cat ""
my_cat "d"
my_cat "5"
my_cat ""
my_cat "d"
my_cat "4"
my_cat ""
my_cat "d"
my_cat "3"
my_cat ""
my_cat "d"
my_cat "2"
my_cat ""
my_cat "d"
my_cat "1"
my_cat ""
my_cat "n"
my_cat "p"
my_cat "1"
my_cat ""
my_cat "+160M"
my_cat "a"
my_cat "1"

}

check_sys_partition()
{

        DISK_NAME=$1
        DISK_CACHE_SIZE=+$2000M
        TWE=2
        CACHE_PARTION=$DISK_NAME$TWE

        rm /istorage_install/set_cache
        rm /etc/istorage/disk_cache.conf

        clear_disk $DISK_NAME
       
        #echo "para2=$2"

case "$2" in

0)
my_cat "n"
my_cat "p"
my_cat "3"
my_cat ""
my_cat ""

my_cat "w"
my_cat "EOF"
;;

all)
my_cat "n"
my_cat "p"
my_cat "2"
my_cat ""
my_cat ""

my_cat "w"
my_cat "EOF"

echo "/dev/$CACHE_PARTION" >> /etc/istorage/disk_cache.conf
;;

# default
*)

my_cat "n"
my_cat "p"
my_cat "2"
my_cat ""
my_cat "$DISK_CACHE_SIZE"

my_cat "n"
my_cat "p"
my_cat "3"
my_cat ""
my_cat ""

my_cat "w"
my_cat "EOF"

echo "/dev/$CACHE_PARTION" >> /etc/istorage/disk_cache.conf

esac

chmod 777 /istorage_install/set_cache
/istorage_install/set_cache
       
}


## disk device name ##

DISK_DEV=$1
ONE=1
DISK_PARTION=$DISK_DEV$ONE
[ -z "$2" ] && usage

check_sys_partition $DISK_DEV $2

/sbin/mkfs.xfs -f /dev/$DISK_PARTION[/PHP]

为什么最后不能格式化分区?