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- Dedicated usbvm (optional)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~
- In dom0, once:
- qvm-create -l red usbvm
- # FIXME: use your own PCI device IDs
- qvm-pci -a usbvm 00:1d.0
- qvm-pci -a usbvm 00:1d.1
- qvm-pci -a usbvm 00:1d.2
- qvm-pci -a usbvm 00:1d.7
- After each dom0 reboot:
- qvm-start usbvm
- List
- ~~~~
- In dom0:
- qvm-usb -l
- Example output:
- dom0:7-4 0718:061a TDKMedia_Trans-It_Drive_070326AE8AF92D95 (attached to qdvp:0-1)
- dom0:7-5 0b05:1706 ASUS_802.11g_WLAN_Drive (attached to netvm:0-1)
- dom0:1-1 045e:0084 Microsoft_Basic_Optical_Mouse
- usbvm:4-6 05e3:0723 Generic_USB_Storage (attached to qdvp:1-1)
- Attach
- ~~~~~~
- In dom0:
- qvm-usb -a [--no-auto-detach] <vm-name> <device-vm-name>:<backend-controller>-<backend-port>
- Example:
- qvm-usb -a netvm usbvm:4-1
- Detach
- ~~~~~~
- In dom0:
- qvm-usb -d <vm-name>:<vusb-controller>-<vusb-port>
- Example:
- qvm-usb -d netvm:0-1
- Known issues
- ~~~~~~~~~~~~
- List/attach/detach operations seem to work ok, devices are recognized by the target VM etc.
- But actual usage of the attached devices is unstable at best. In fact the only working device
- I saw was one USB stick (and this only after it took a minute to time out and reset the bus
- couple times). Kernel crashes are normal as well. I have not investigated these issues yet,
- I had similar experience with Marek's scripts.
- * System keyboard / mouse are listed and can be detached away
- * Virtual USB devices (ones created by PVUSB frontend) may be listed
- * The installation/configuration is not persistent, not retained between reboots
- * No debugging / logging / audit trail
- * When an attached device is physically unplugged, USB port remains mapped but not displayed
- in the list. If device is plugged back it continues to work. Unlisted device cannot be detached.
- * We are not attaching actual devices, but USB ports (different behavior from VMWare, might be confusing)
- * After device is detached from the frontend and returned back to the backend it is not alwayws usable there
- * Code changing configuration of pvusb fe/be and vusb bind/unbind helper are located
- misc/xl-qvm-usb-attach.py misc/xl-qvm-usb-detach.py misc/vusb-ctl.py. These helpers are
- deployed into the backend domain. The initialization code is qubesutils.py in usb_setup(),
- should probably also be moved into an external helper. Perhaps the functionality of these
- external helpers should be merged into libxl? The is one catch is invokation of vusb helper
- in the backend domain -- now it relies on qubes-specific API.
- * After reboot attached USB devices are not listed by 'qvm-usb -l' until replugged.
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