/article/2018/02/15/openwrt-usb-storage/

Openwrt路由器系统配置支持USB存储设备

  • 【作者】看不见我
  • 【分类】Linux
  • 【发布】2018-02-15 14:54
  • 【更新】2019-02-05 13:57
【Openwrt】

Openwrt路由器系统配置支持USB存储设备

https://wiki.openwrt.org/zh-cn/doc/howto/usb.storage

1. OpenWrt设备上获得基本USB支持

https://wiki.openwrt.org/doc/howto/usb.essentials

需要软件包：

  • kmod-usb-core
  • kmod-usb2
# Modules for USB 2.0
opkg update
opkg install kmod-usb2
insmod ehci-hcd
# If you see messages like unresolved symbol usb_calc_bus_time try loading usbcore and then try ehci-hcd again:
#opkg update
#insmod usbcore
#insmod ehci-hcd

2. OpenWrt上配置挂在USB设备环境

https://wiki.openwrt.org/zh-cn/doc/howto/usb.storage#required_packages_for_usb_storage

相关软件包:

  • kmod-usb-storage (required) 内核支持usb存储设备需要安装包.
  • kmod-fs- (required) 根据文件系统安装(examples include kmod-fs-ext4, kmod-fs-msdos, kmod-fs-ntfs, and kmod-fs-xfs).
  • kmod-usb-storage-extras (optional) 内核支持更多的设备(SmartMedia card readers).
  • block-mount (recommended & required) 挂在设备支持包.
  • kmod-scsi-core (Any mass storage is a generic SCSI device)
# 例子支持挂在usb设备ext4文件系统
opkg update
opkg install kmod-usb-storage block-mount
opkg install kmod-fs-ext4
#mkswap /dev/sda1
#swapon /dev/sda1
mkdir -p /mnt/usb
mount -t ext4 /dev/sda2 /mnt/usb -o rw,sync

禁止在未挂载时写入

# You may create an empty file to indicate that the disk is not plugged in so that you don't put files directly onto NAND by doing
umount /mnt/usb   #make sure the disk isn't mounted before doing this
touch /mnt/usb/USB_DISK_NOT_PRESENT
chmod 555 /mnt/usb 
chmod 444 /mnt/usb/USB_DISK_NOT_PRESENT

3. 系统启动自动挂载

使用fstab启动:

配置文件: /etc/config/fstab

直接写入/etc/rc.local在启动系统时自动挂载

# /etc/rc.local
/bin/mount -t ext4 /dev/sda /mnt/usb -o rw,sync
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