[gentoo-user] UDEV rule problem

[Helmut Jarausch]

Hi,

I have two external USB3 hard disk enclosures. They have the same  
vendor, model and the same serial number (unfortunately).
Vendor, model and serial occur in the usb-subsystem only.

Since the hard drives within theses enclosures have different  
capacities, there is a different ATTR{size} value in the  
block-subsystem.
But this doesn't have any vendor info.

How can I write to different udev rules to distinguish these two  
external hard disks?

Many thanks for a hint,
Helmut