On 12/17/2013 02:47 AM, Jianwei Hu wrote: > Hi guys, > > I want to attach a few USB disks to specified USB controller in domain on > libvirt layer, but I didn't find any method to deal with it. Anyone can help > me on that? > > I added some USB type disk to my domain, started it, I found all USB disk had > been attached to same USB controller automatically, I want to assign some USB > disks to another controller manually but I can't find the entry. qemu-kvm has > provided command line to support it by using "bus" argument.(like: device_add > usb-storage,id=my_usb_disk,drive=my_usb_disk,bus=usb.0 ) > > Action steps: > 1. Add some USB disks to domain xml, > <disk type='file' device='disk'> > <driver name='qemu' type='raw'/> > <source file='/var/lib/libvirt/images/usb-img/usb-1.img'/> > <target dev='sda' bus='usb'/> > <alias name='usb-disk0'/> > </disk>
To force the guest to see the device under a particular UBS controller, you need to include an <address> designation in your XML. Check the 'virsh dumpxml' output to see what <address> got autogenerated for your use case, then adjust the bus number in that address to instead point to the controller number you want it associated with. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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