I am having a hard time getting an optical drive to passthrough. I had it working just fine for years with Windows 10. I have since built a new VM with Windows 11, pretty sure it was working when initially set it up but many months later trying to use this VM again, it's not working.

 

I am trying to passthrough this drive:

 

SCSI Devices

[1:0:0:0]cd/dvd HL-DT-ST BD-RE WH16NS40 1.02 /dev/sr0

 

Here is my XML:

 

<?xml version='1.0' encoding='UTF-8'?>
<domain type='kvm'>
  <name>HomeVM</name>
  <uuid>3654d69a-1687-4e8f-17ce-f95c65879313</uuid>
  <metadata>
    <vmtemplate xmlns="unraid" name="Windows 11" icon="windows11.png" os="windowstpm"/>
  </metadata>
  <memory unit='KiB'>16777216</memory>
  <currentMemory unit='KiB'>16777216</currentMemory>
  <memoryBacking>
    <nosharepages/>
  </memoryBacking>
  <vcpu placement='static'>4</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='2'/>
    <vcpupin vcpu='1' cpuset='10'/>
    <vcpupin vcpu='2' cpuset='4'/>
    <vcpupin vcpu='3' cpuset='12'/>
  </cputune>
  <os>
    <type arch='x86_64' machine='pc-i440fx-6.1'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi-tpm.fd</loader>
    <nvram>/etc/libvirt/qemu/nvram/3654d69a-1687-4e8f-17ce-f95c65879313_VARS-pure-efi-tpm.fd</nvram>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv mode='custom'>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
      <vendor_id state='on' value='none'/>
    </hyperv>
  </features>
  <cpu mode='host-passthrough' check='none' migratable='on'>
    <topology sockets='1' dies='1' cores='2' threads='2'/>
    <cache mode='passthrough'/>
    <feature policy='require' name='topoext'/>
  </cpu>
  <clock offset='localtime'>
    <timer name='hypervclock' present='yes'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/local/sbin/qemu</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='writeback'/>
      <source file='/mnt/cache/Virtual Machines/BrianVM/vdisk2.im'/>
      <target dev='hdc' bus='virtio'/>
      <boot order='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
      <source dev='/dev/nvme1n1'/>
      <target dev='hdd' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/isos/Win11_English_x64v1.iso'/>
      <target dev='hda' bus='ide'/>
      <readonly/>
      <boot order='2'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/isos/virtio-win-0.1.225-2.iso'/>
      <target dev='hdb' bus='ide'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x2'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </controller>
    <controller type='scsi' index='0' model='lsilogic'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='scsi' index='1' model='lsilogic'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:e7:bb:c2'/>
      <source bridge='br0'/>
      <model type='virtio-net'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <channel type='unix'>
      <target type='virtio' name='org.qemu.guest_agent.0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <tpm model='tpm-tis'>
      <backend type='emulator' version='2.0' persistent_state='yes'/>
    </tpm>
    <graphics type='vnc' port='-1' autoport='yes' websocket='-1' listen='0.0.0.0' keymap='en-us'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <audio id='1' type='none'/>
    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <hostdev mode='subsystem' type='scsi' managed='no'>
      <source>
        <adapter name='scsi_host1'/>
        <address bus='0' target='0' unit='0'/>
      </source>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </hostdev>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </memballoon>
  </devices>
</domain>

 

Not sure if this matters or not but I also have in Device Manager 2 SCSI Controllers showing without drivers.

Other device
SCSI Controller

SCSI Controller

 

But if I select the drive for virtio-win-0.1.225, it it unable to find the drivers

 

6 hours ago, LimeB said:

I also have in Device Manager 2 SCSI Controllers showing without drivers

 

You have actually 2 scsi controllers defined:

6 hours ago, LimeB said:

    <controller type='scsi' index='0' model='lsilogic'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='scsi' index='1' model='lsilogic'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </controller>

 

And your optical drive is attached to controller with index 0:

6 hours ago, LimeB said:

    <hostdev mode='subsystem' type='scsi' managed='no'>
      <source>
        <adapter name='scsi_host1'/>
        <address bus='0' target='0' unit='0'/>
      </source>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </hostdev>

 

Settings are correct.

 

Since you are passing the optical drive only and not the whole controller, the optical drive is attached to a virtio emulated scsi controller and you need drivers for it, drivers are not included in windows.

So, open device manager and manually install drivers for the 2 controllers (option "I have a disk"). After mounting the virtio iso inside the vm, point the driver search to x:\vioscsi\w11\amd64\ directory.

If you have issues with the 225 virtio release try the latest one:

https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.229-1/virtio-win-0.1.229.iso

Edited June 21, 20233 yr by ghost82

Appreciate the quick reply.

 

I tried using the updated virtio drivers you linked but Windows says it was unable to install. Since it is my E drive I have tried:

 

E:\

E:\vioscsi\

E:\vioscsi\w11\

E:\vioscsi\w11\amd64

 

And selected to include subfolders.

@LimeBHave you tried a different controller type like SATA? Or trye using the sg name for the path instead of sr sg_map will showing the mapping. I know that I need to attach the sg for makemkv docker to make it work.

 

root@computenode:~# sg_map
/dev/sg1  /dev/sdb
/dev/sg2  /dev/sdc
/dev/sg3  /dev/sdd
/dev/sg4  /dev/sde
/dev/sg5  /dev/sdf
/dev/sg6  /dev/sdg
/dev/sg7  /dev/sdh
/dev/sg8  /dev/sdi
/dev/sg9  /dev/sdj
root@computenode:~# 

 

or create a disk mapping like you nvme drive with block type=cdrom

Kind of put this to the side and forgot about it but now I want to try to get this figured out.

 

 

On 6/21/2023 at 11:41 AM, SimonF said:

@LimeBHave you tried a different controller type like SATA? Or trye using the sg name for the path instead of sr sg_map will showing the mapping. I know that I need to attach the sg for makemkv docker to make it work.

 

root@computenode:~# sg_map
/dev/sg1  /dev/sdb
/dev/sg2  /dev/sdc
/dev/sg3  /dev/sdd
/dev/sg4  /dev/sde
/dev/sg5  /dev/sdf
/dev/sg6  /dev/sdg
/dev/sg7  /dev/sdh
/dev/sg8  /dev/sdi
/dev/sg9  /dev/sdj
root@computenode:~# 

 

or create a disk mapping like you nvme drive with block type=cdrom

 

I am not sure how to do either of these suggestions.

Giving myself a bump. How would I try the other suggestions above?