Implementation of automatic mount of USB storage device in embedded Linux system

There are usually two ways to implement automatic mounting of USB storage devices like USB drive: Udev and Mdev. Because Udev is relatively simpler and has better support in the kernel, select Udev to implement functionality.

# cd/etc/udev/rules.d/

Compile a rules file, such as: 50-udev-default.rules, add the following at the end of the file:

kernel== "sd[a-z][0-9]", name=%k ", owne=" root ", group=" root "
action== "Add", kernel== "sd[a-z][0-9]", run+= "/bin/mount/dev/%k/mnt/usb"
action== "Remove", kernel== "sd[a-z][0-9", run+= "/bin/umount/mnt/usb"

After you save the exit, use the following command to make the new content take effect (restart the system also.)

Udevcontrol Reload_rules 50-udev-default.rules

This also supports the hot plug of the USB drive.