<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><pre style="margin: 0em;">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</pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;">error: Failed to update device from /var/run/libvirt/qemu/kvmtest1.xml</pre><pre style="margin: 0em;">error: XML description for unknown device type is not well formed or invalid.</pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;">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. </pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;">Can anyone advise the correct steps to detach a device from a running and/or offline domain?</pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;">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?</pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;">Thanks</pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;">Jeff</pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;"><br></pre><pre style="margin: 0em;">于 2011年03月31日 15:17, Masanari Iida 写道: </pre><blockquote style="border-left: 0.2em solid rgb(85, 85, 238); margin: 0em; padding-left: 0.85em;"><pre style="margin: 0em;">Somebody sent me a tips. Following command do what I wanted to do. Thanks. attach-disk guest01 " " hdc --driver file --type cdrom --mode readonly </pre></blockquote><pre style="margin: 0em;">Also using "update-device" with an xml which doesn't specify the source file path will work. </pre><blockquote style="border-left: 0.2em solid rgb(85, 85, 238); margin: 0em; padding-left: 0.85em;"><pre style="margin: 0em;">On Thu, Mar 31, 2011 at 3:29 PM, Masanari Iida<standby24x7 gmail com> wrote: </pre><blockquote style="border-left: 0.2em solid rgb(85, 85, 238); margin: 0em; padding-left: 0.85em;"><pre style="margin: 0em;">Hello, 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. (example) attach-disk guest01 /root/disc1.iso hdc --driver file --type cdrom --mode readonly attach-disk guest01 /root/disc2.iso hdc --driver file --type cdrom --mode readonly 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. OS: RHEL5.6 libvirt-0.8.2-15.el5_6.1 is used. Regards, Masanari Iida </pre></blockquote><pre style="margin: 0em;">_______________________________________________ libvirt-users mailing list libvirt-users redhat com <a rel="nofollow" href="https://www.redhat.com/mailman/listinfo/libvirt-users">https://www.redhat.com/mailman/listinfo/libvirt-users</a> </pre></blockquote><pre style="margin: 0em;"></pre><div><br></div></body></html>