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Description of problem: Configuration of controllers cannot be changed with virsh attach-device and virsh detach-device. It doesn't seem hard to do Version-Release number of selected component (if applicable): 0.9.10 How reproducible: 100% Steps to Reproduce: 1. Define a domain. 2. Put the following line in a file scsi.xml: <controller type='scsi' model='virtio-scsi'/> 3. Execute the following command: virsh attach-device --persistent prova scsi.xml Actual results: "error: unsupported configuration: persistent attach of device is not supported" Expected results: Controller is added to the domain configuration Additional info: detach-device is also unsupported.
v2 posted upstream. https://www.redhat.com/archives/libvir-list/2012-July/msg01179.html
Author: Osier Yang <jyang> Date: Mon Jul 23 16:18:57 2012 +0800 qemu: Allow to attach/detach controller device persistently
Verify pass on libvirt-0.10.0-0rc1.el6.x86_64 kernel-2.6.32-289.el6.x86_64 qemu-kvm-0.12.1.2-2.302.el6.x86_64 1. Start a guest named rhel6u3 2. Prepare a controller xml # cat controller.xml <controller type='scsi' model='virtio-scsi'/> 3. # virsh attach-device --persistent rhel6u3 controller.xml Device attached successfully # virsh dumpxml rhel6u3 ... <controller type='scsi' index='0' model='virtio-scsi'> ... # virsh dumpxml rhel6u3 --inactive ... <controller type='scsi' index='0' model='virtio-scsi'> ... # cat scsi-disk.xml <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/var/lib/libvirt/images/local.img'/> <target dev='sdb' bus='scsi'/> </disk> # virsh attach-device rhel6u3 scsi-disk.xml Device attached successfully # virsh detach-device --persistent rhel6u3 controller.xml error: Failed to detach device from controller.xml error: operation failed: device cannot be detached: device is busy # virsh detach-device rhel6u3 scsi-disk.xml Device detached successfully # virsh detach-device --persistent rhel6u3 controller.xml Device detached successfully # virsh dumpxml rhel6u3 no scsi controller # virsh dumpxml rhel6u3 --inactive no scsi controller
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2013-0276.html