Re: [libvirt] Mounting a raw DVD

Adam Mooz wrote: > 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)? > > I didn't see /dev/dvd in your xml. If you attach it and then dump the xml what does it look like? And then have you tried booting the VM with an xml file with this device and can you read the files on the device this way? The other thing is that maybe your version of libvirt is too old. I think 0.7.1 is current. -Gerry -- Libvir-list mailing list Libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list