I am trying to detach an ISO from a KVM machine and I've tried both attach-disk using " " in the file path as well as the update-device option but am getting this error
error: Failed to update device from /var/run/libvirt/qemu/kvmtest1.xml
error: XML description for unknown device type is not well formed or invalid.
I tried doing a virsh edit on the xml file to remove the source file path to the ISO, as I assume is the correct method, and then running the virsh update-device but it's not working.
Can anyone advise the correct steps to detach a device from a running and/or offline domain?
Additionally - anyone have any guidance on how to attach a CD device to a domain that is currently shutdown, for example, if I wanted to boot the domain to a rescue CD image?
于 2011年03月31日 15:17, Masanari Iida 写道:
Somebody sent me a tips.
Following command do what I wanted to do.
attach-disk guest01 " " hdc --driver file --type cdrom
Also using "update-device" with an xml which doesn't specify
the source file path will work.
On Thu, Mar 31, 2011 at 3:29 PM, Masanari Iida<standby24x7 gmail com> wrote:
I can attach disc ISO image to cd-rom from virsh.
And I can replace the ISO image from disc1 to disc2 using the 2nd example.
attach-disk guest01 /root/disc1.iso hdc --driver file --type cdrom
attach-disk guest01 /root/disc2.iso hdc --driver file --type cdrom
My question is, how can I disconnect the image from the cdrom drive using virsh.
Because, if I try to detach-disk hdc, I got following errors.
virsh # detach-disk guest01 hdc
error: Failed to detach disk
error: this function is not supported by the connection driver:
This type of device cannot be hot unplugged
What I can do is possible from virt-manager's "Disconnect" button,
(next to source path: line) from Hardware's TAB, Disk hdc screen.
I want to do this from virsh.
libvirt-0.8.2-15.el5_6.1 is used.
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