Hi,
The following devices and drives are specified in my qemu command line: -drive file=/home/test/kvm1/kvm1.qcow2,media=disk,cache=writeback,format=qcow2 \ -device virtio-scsi-pci,id=scsi \ -drive if=none,id=hda,file=/home/test/kvm1/mpath.img,cache=none,format=raw \ -device scsi-hd,drive=hda,serial=TEST \ -drive if=none,id=hdb,file=/home/test/kvm1/mpath.img,cache=none,format=raw \ -device scsi-hd,drive=hdb,serial=TEST I use hda and hdb to emulate a multipath device. After drive_del hda, I need to add it back, but it always fails: (qemu) drive_del hda (qemu) drive_add 0 if=none,id=hda,file=/home/simon/ol7kvm/mpath.img,cache=none,format=raw Duplicate ID 'hda' for drive Any idea? Best Regards, Khitai