Re: [libvirt] [PATCH] protect the scsi controller to be deleted when it is in use

Steps to reproduce this bug: 1. virsh attach-disk domain --source imagefile --target sdb --sourcetype file --driver qemu --subdriver raw 2. virsh detach-device controller.xml # remove scsi controller 0 3. virsh detach-disk domain sdb error: Failed to detach disk error: operation failed: detaching scsi0-0-1 device failed: Device 'scsi0-0-1' not found I think we should not detach a controller when it is used by some other device. Signed-off-by: Wen Congyang <wency(a)cn.fujitsu.com&gt;