Hi, using libvirt 7.1.0, qemu-kvm 5.2.0 on a host with kernel 5.11.6 (otherwise Leap 15.2), I noticed an issue within a managedsave/start sequence. After resuming a w2k19 client, accessing a host attached usb device fails. It is still attached, but the client doesn't recognize the device anymore. Reattaching fails with: $ virsh attach-device fs2k19 /work/libvirt/devices/fs2k19.xml error: Failed to attach device from /work/libvirt/devices/fs2k19.xml error: Angeforderte Operation ist nicht gültig: USB device 001:007 is in use by driver QEMU, domain fs2k19 Manually detaching and reattaching it works fine: $ virsh detach-device fs2k19 /work/libvirt/devices/fs2k19.xml Device detached successfully virsh attach-device fs2k19 /work/libvirt/devices/fs2k19.xml Device attached successfully Let me know, if you need more details on this. Pete