[libvirt-users] How to device port on the controller

[Martin Kletzander]

On 04/08/2013 11:58 PM, Daniele Testa wrote:
> Hi,
> 
> I am adding a disk to my KVM virtual server, but for some reason it refuses
> to honor the <address>
> 
> I have tried the following 3:
> 
>     <disk type='block' device='disk'>
>       <driver name='phy' type='raw'/>
>       <source dev='/dev/nbd2'/>
>       <target dev='vdb' bus='virtio'/>
>       <serial>my-fake-serial</serial>
>       <address type='drive' controller='0' bus='1' target='3' unit='2'/>
>     </disk>
> 
> 
>     <disk type='block' device='disk'>
>       <driver name='phy' type='raw'/>
>       <source dev='/dev/nbd2'/>
>       <target dev='vdb' bus='virtio'/>
>       <serial>my-fake-serial</serial>
>       <address type='pci' bus='0x00' slot='0x08' function='0x0'/>
>     </disk>
> 
> 
>     <disk type='block' device='disk'>
>       <driver name='phy' type='raw'/>
>       <source dev='/dev/nbd2'/>
>       <target dev='vdb' bus='virtio'/>
>       <serial>my-fake-serial</serial>
>       <address type='virtio-serial' controller='0' bus='0' port='8'/>
>     </disk>
> 
> I would assume the last one is the one to use, as I am using a "virtio"
> bus. However, the <address> attribute is simply ignored and the disk is
> always attached as this:
> 
> pci-0000:00:05.0
> 
> Further, how do I read the "my-fake-serial" from within the virtual machine?
> 

The serial for vdb for example is in /sys/class/block/vdb/serial

I know I haven't helped with the addresses, don't know much about that,
but try attaching your libvirt version and the log of
/var/log/libvirt/qemu/<machine_name>.log.
I'll see when I'll get to you.  Maybe somebody will found out in the
meantime.  If not, feel free to create a bug for this.

Martin