Hi, I have written a wiki about usb controller and usb-passthrough in https://wiki.openstack.org/wiki/Nova/proposal_about_usb_passthrough.
Hope I can get your good advices. Thanks, Jeremy Liu > -----Original Message----- > From: Liuji (Jeremy) [mailto:jeremy....@huawei.com] > Sent: Thursday, February 27, 2014 9:59 AM > To: yunhong.ji...@linux.intel.com; OpenStack Development Mailing List (not > for usage questions) > Cc: Luohao (brian); Yuanjing (D) > Subject: Re: [openstack-dev] [nova] Question about USB passthrough > > Yes, PCI devices like GPU or HBA are common resources, admin/user do not > need to specify which device to which VM. So current PCI passthrough function > can meet user scenarios. > > But USB devices have different user scenarios. Take USB key or USB disk as > example, admin/user may need the content in USB device but not the device > itself, so admin/user should specify which USB device to which VM. > > There are other things needed to be considered too, for example USB device > may need a matched USB controller but not the default USB 1.1 controller > created by qemu. > > I'm not clear about how to provide this function but still want to write a > wiki so > that more people can participate in the discussion. > > Thanks, > Jeremy Liu > > > -----Original Message----- > > From: yunhong jiang [mailto:yunhong.ji...@linux.intel.com] > > Sent: Wednesday, February 26, 2014 1:17 AM > > To: OpenStack Development Mailing List (not for usage questions) > > Cc: bpavlo...@mirantis.com; Luohao (brian); Yuanjing (D) > > Subject: Re: [openstack-dev] [nova] Question about USB passthrough > > > > On Tue, 2014-02-25 at 03:05 +0000, Liuji (Jeremy) wrote: > > > Now that USB devices are used so widely in private/hybrid cloud like > > > used as USB key, and there are no technical issues in libvirt/qemu. > > > I think it a valuable feature in openstack. > > > > USB key is an interesting scenario. I assume the USB key is just for > > some specific VM, wondering how the admin/user know which usb disk to > which VM? > > > > --jyh > > > > > > _______________________________________________ > > OpenStack-dev mailing list > > OpenStack-dev@lists.openstack.org > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
