udev to obtain hard drive serial number

udev to obtain hard drive serial number

[Brad Tilley]

What's the most stable way in which to obtain a hard drive serial number
using recent Linux kernels and udev. Normal users may call udevadm like
this to get the serial number:

/sbin/udevadm info --query=property --name /dev/sda | grep ID_SERIAL_SHORT
| tr = " " | awk '{print $2}'

output looks like this:

E3834563JPSNTN

How stable/reliable is this approach compared to other tools such as
hdparm, etc. Is there a better way to do this with udev?

Thanks for any advice,

Brad