[libvirt] Mounting a raw DVD

Adam Mooz adam.mooz at gmail.com
Tue Nov 10 03:54:22 UTC 2009


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>

Thanks in advance,
-----------------------------------------------------------------
Adam Mooz
Adam.Mooz at gmail.com
AdamMooz at me.com
http://www.AdamMooz.com



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