On 11/09/2011 11:29 AM, Xu He Jie wrote:
于 2011年11月09日 11:05, Osier Yang 写道:
On 11/09/2011 10:34 AM, Xu He Jie wrote:
于 2011年11月09日 07:08, Eric Blake 写道:
On 11/08/2011 12:16 AM, Xu He Jie wrote:
As the description of removing CDROM media from http://wiki.libvirt.org/page/QEMUSwitchToLibvirt#eject_DEV
Hmm. virsh attach-disk --type cdrom --mode readonly myguest "" hdc might look a bit nicer as: virsh attach-disk --type cdrom --mode readonly myguest --target hdc except that we marked --source as a required argument, so we have to provide something even when there is no real source. So I agree that we need your patch at a bare minimum to support this documented command line for adding a cdrom drive without a disk. Is there any other method of removing media from cdrom? I try with: detach-disk myguest hdc
This will detach the CD drive from guest, for just removing the media, "update-device $domain xml" with the source path removed in the xml will work.
We planned to add some new virsh commands such as "insert-media", "eject-media" before to do the work, as "update-device" is not quite visiable, and question like this are frequent in upstream, but unfortunately, it's not implemented yet. I understood, thanks.
It told me: 'unsupported configuration: device type 'disk' cannot be detached'
Is this the exact error you saw, it's weried if a device of type disk can't be detached. The error expected should be something like:
"unsupported configuration: device type of 'cdrom' cannot be detached"
Yes, the xml as below: <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' unit='0'/> </disk>
the command as below: virsh # detach-disk ubuntu-test-vm1 hdc 错误： Failed to detach disk 错误： unsupported configuration: device type 'disk' cannot be detached
I see, there is a bug here. This patch fixed it. http://www.redhat.com/archives/libvir-list/2011-November/msg00355.html Osier