This feature appears to cause a bug.
To reproduce attach-device to a virtual machine and then stop that vm
Start another vm and try to attach-device to that machine
I get:
virsh attach-device vm1 /var/lib/libvirt/hotplug/usb-serial.xml
error: Failed to attach device from /var/lib/libvirt/hotplug/usb-serial.xml
error: Requested operation is not valid: USB device 002:005 is in use by domain ..
This feature appears to cause a bug. libvirt/ hotplug/ usb-serial. xml libvirt/ hotplug/ usb-serial. xml
To reproduce attach-device to a virtual machine and then stop that vm
Start another vm and try to attach-device to that machine
I get:
virsh attach-device vm1 /var/lib/
error: Failed to attach device from /var/lib/
error: Requested operation is not valid: USB device 002:005 is in use by domain ..
usb-serial:
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<vendor id='0x067b'/>
<product id='0x2303'/>
</source>
</hostdev>
backing up libvirt0 and libvirt-bin to 0.9.8-2ubuntu17.7 makes this problem go away.
While looking at this I found a Fedora bug that looks similar. The upstream patches they identified may be of interest. /bugzilla. redhat. com/show_ bug.cgi? id=814866
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