关于quota

我在/etc/fstab 文件中设置如下:
LABEL=/home    /home         ext3    defaults,usrquota       1 2
在/etc/rc.d/rc.local文件中设置如下:
#check quota and turn quota on
if [-x /sbin/quotacheck ];then
     echo "Checking quotas,This may take some time ... "
     /sbin/quotacheck -avug
     echo "Done."
   fi
if[ -x /sbin/quotaon ];then
     echo "Enabling disk quota ... "
     /sbin/quotaon -avug
     echo "Done."
   fi
用touch /home/quota.user生成文件但重启后,出现如下提示:
quotaon: using /home/aquota.user on /dev/hda3: Invalid argument
请高手帮帮手,为何会如此,如何解决?