[et-mgmt-tools] virt-path modification sugestion

[Michael DeHaan]

>
> -----
>
> So from this i can see that when using logical volumes the volume 
> names are defined by setting the virt-path to the volume group name 
> and the logical volume name will be sytstemName-disk0
>
> If the calc_virt_path2 function was modified slightly, to first split 
> the location on / and using the first part as the volume group name, 
> and then if the second part is not null set the logical volume name to 
> the second part, else use the default name.
> It would be possible to also explicitly specify the logical volume in 
> the virt-path using the form volumeGroup/logicalVolume
>
> I would submit a patch to do it, but im not a python programmer.

Python's easy :)

Anyhow, if --virt-path is an LVM volume, the idea with systemName-diskN 
nomenclature is that you can specify that a virtual machine gets 
multiple disks

cobbler profile edit --name=foo --virt-size=5,6,7

In this example, it would get 3 disks -- 5GB, 6GB, and 7GB

The disks would be named as follows:

virtName-disk0
virtName-disk1
virtName-disk2

Essentially the thought is that allowing too much variance in naming 
here is going to cause some confusion, and using the virt name and the 
disk numbers ensure things don't stomp over each other.

If you want to specify a specific LVM partition, you can still 
pre-create it and then specify it with it's full "/dev" path.

Make sense?

I believe there are a several people using the LVM/virt stuff as above 
so I'm not sure I'd want to change it and possibly break them.

--Michael