openwrt挂载U盘

添加USB相关支持
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Kernel modules —> USB Support —> <*> kmod-usb-core. ##默认已经选了
Kernel modules —> USB Support —> <*> kmod-usb-ohci. ##默认已选 old usb1.0
Kernel modules —> USB Support —> <*> kmod-usb-uhci. ## usb1.1
Kernel modules —> USB Support —> <*> kmod-usb-storage.
Kernel modules —> USB Support —> <*> kmod-usb-storage-extras.
Kernel modules —> USB Support —> <*> kmod-usb2. ##默认已经选了 usb2.0

添加SCSI支持
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Kernel modules —> Block Devices —> <*>kmod-scsi-core ##默认已经选了 usb3.0

添加USB挂载
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Base system —> <*>block-mount

添加文件系统支持
Kernel modules —> Filesystems —> <*> kmod-fs-ext4 (移动硬盘EXT4格式选择)
Kernel modules —> Filesystems —> <*> kmod-fs-vfat(FAT16 / FAT32 格式 选择)
Kernel modules —> Filesystems —> <*> kmod-fs-ntfs (NTFS 格式 选择)

退出保存 make V=99

自动挂载U盘：编辑 /etc/hotplug.d/block/10-mount 写入以下内容

#!/bin/ash  

case "$ACTION" in  
    add)  
        for i in $(ls /dev/ | grep 'sd[a-z][1-9]')  
        do  
            mkdir -p /mnt/$i  
            mount -o iocharset=utf8,rw /dev/$i /mnt/$i  
            if [ $? -ne 0 ]  
            then  
                mount -o rw /dev/$i /mnt/$i  
            fi  
        done  
        ;;  
    remove)  
        MOUNT=`mount | grep -o '/mnt/sd[a-z][1-9]'`  
        for i in $MOUNT  
        do  
            umount $i  
            if [ $? -eq 0 ]  
            then  
                rm -r $i  
            fi  
        done  
        ;;  
esac