Hi,

recent versions of qemu-kvm allow setting the serial "number" (which is actually a string) of a virtual disk to be set from the kvm command line (just add "serial=some-string" to the -drive option of KVM. This string can then be picked up from within the guest to, for example, create a device node in /dev/disk/by-serial using udev.

Please add the possibility to set a virtual disk drive's serial number from the virt-manager GUI.

Greetings
Marc