On Tuesday 01 June 2010 19:42:55 Daniel P. Berrange wrote: > > > So I am looking for a way to make sure the host passes through > > > the USB device (in its entirety) without trying to touch it and > > > claim it as its own. Preferably without disabling the USB > > > storage subsystem completely on the host. > > > > > > Any ideas? Is there a best practice for such things in the > > > Libvirt world? Or any other world? > > > > For PCI devices, libvirt automatically performs a device reset and > > some other voodoo to make sure the host doesn't try to use the > > device. Maybe there is something similar that libvirt can do for > > USB devices as well? I'm not very knowledgable about that stuff so > > I can't say for certain. > > Yes there is the same. We need to finish implementing identical > infrastructure to that used for PCI devices. We need to do resets > and bind/unbind host device drivers, and implement the so called > 'managed' mode. Hi, thanks to both of you for your replies! Great to know you guys are working on it, but just to be clear: at the moment Libvirt does not yet see to it that USB devices are unbound from their drivers on the host? Do you have any idea how I could perform the necessary steps by myself so that my particular USB GSM modem is unbound from and not accessed by the host? I am not very familiar with USB device and driver management these days; it has just gotten too easy: plug the device in and wait for the desktop environment to do something :) Thanks again, Andreas -- Andreas Ntaflos Vienna, Austria GPG Fingerprint: 6234 2E8E 5C81 C6CB E5EC 7E65 397C E2A8 090C A9B4
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