Re: [libvirt] Mounting a raw DVD

On 2009-11-09, at 11:46 PM, Gerry Reno wrote: > Adam Mooz wrote: >> Hello List, >> >> I'm attempting to pass a DVD drive of a headless server into a >> virtual machine. So far I've managed to mount *something* into the >> VM, but it's being registered as a blank DVD within the VM. When I >> mount /dev/dvd into the bare-metal machine it registers normally as >> the DVD. How do I pass physical drives into a VM and back out using >> libvirt? >> Command used: >> #virsh attach-disk Montreal /dev/dvd hdc --mode readonly --driver >> phy --type cdrom >> Connecting to uri: qemu:///system >> Disk attached successfully >> >> VM XML file: >> >> <domain type='kvm'> >> <name>Montreal</name> >> <uuid>0f79ba7f-27bf-16a0-5887-6cfa2b5569f1</uuid> >> <memory>2097152</memory> >> <currentMemory>2097152</currentMemory> >> <vcpu>1</vcpu> >> <os> >> <type arch='x86_64' machine='pc-0.11'>hvm</type> >> <boot dev='hd'/> >> </os> >> <features> >> <acpi/> >> <apic/> >> <pae/> >> </features> >> <clock offset='utc'/> >> <on_poweroff>destroy</on_poweroff> >> <on_reboot>restart</on_reboot> >> <on_crash>restart</on_crash> >> <devices> >> <emulator>/usr/bin/kvm</emulator> >> <disk type='file' device='cdrom'> >> <target dev='hdc' bus='ide'/> >> <readonly/> >> </disk> >> <disk type='file' device='disk'> >> <source file='(Mangled Purposely)'/> >> <target dev='vda' bus='virtio'/> >> </disk> >> <interface type='bridge'> >> <mac address='(mangled purposly)/> <source bridge='br0'/> >> <model type='virtio'/> >> </interface> >> <serial type='pty'> >> <target port='0'/> >> </serial> >> <console type='pty'> >> <target port='0'/> >> </console> >> <input type='mouse' bus='ps2'/> >> <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> >> <video> >> <model type='cirrus' vram='9216' heads='1'/> >> </video> >> </devices> >> </domain> >> > > I haven't done this for a while but I believe you have to issue a > 'detach' command afterwards. > > -Gerry > > -- > Libvir-list mailing list > Libvir-list(a)redhat.com <mailto:Libvir-list@redhat.com> > https://www.redhat.com/mailman/listinfo/libvir-list # virsh detach-disk Montreal hdc Connecting to uri: qemu:///system error: this function is not supported by the hypervisor: only SCSI or virtio disk device can be detached dynamically ? Also, I'm not sure if you understood my question. When I pass in the DVD device into the VM it registers as a blank DVD. if I pass in a non-existant folder it blows up, so I know it's reading something from the real DVD drive. Mounting the real DVD drive in the bare-metal machine shows the files on the drive, but I cannot get them to appear in the VM. How do I get the same files to show up in the VM (i.e. mount the DVD drive into the VM)?