ProxMox - Need help Converting part of XML I used to pass BluRay drive to VM in KVM

[FreeSoftwareServers]

Hello! I just migrated from a Fedora/KVM setup to ProxMox and It was a painless setup. I did have tiny bit of trouble getting past "code 43" with NVidia. (On Fedora I COULD NOT use q35, in ProxMox, I HAD TO, and I also NEEDED the pci=1 line). But I got that resolved. The last piece of hardware I want to get working again is my BD/DVD Drive.

In KVM in my domain I used the following to pass through my drive:

Find SCSI #:

    lsscsi
    [root@kvmatrix ~]# lsscsi
    [#:0:0:0]    cd/dvd  HL-DT-ST BD-RE  WH14NS40  1.03  /dev/sr0

Edit Domain XML and add this:

Note: Replace scsi_host# with the # found in lssci

   <controller type='scsi' index='0' model='virtio-scsi'/>
       <hostdev mode='subsystem' type='scsi'>
        <source>
           <adapter name='scsi_host#'/>
           <address type='scsi' bus='0' target='0' unit='0'/>
         </source>
         <readonly/>
         <address type='drive' controller='0' bus='0' target='0' unit='0'/>
       </hostdev>

I had to force the XML to be accepted as virsh edit gave errors, just press i and then reboot vm to test.

Can anybody help me figure out how to add this to the conf file in ProxMox? I'm thinking it needs to go in args:, but I can't seem to convert it to qemu cmdline argument. Thanks!

Note: This is required to get the Windows VM to recognize the drive as a "real" drive not a "qemu" drive.

 

[FreeSoftwareServers]

Its too bad, I was hoping to use ProxMox, but without access to hardware I have already payed for and without support for any issues I don't see me making the change just for a GUI. This function worked fine with KVM and libvirt.

 

[fabian]

you can pass-through a raw block device of the host as root, just set the device path as "volume". you can also set scsiblock=1 to pass through SCSI commands from the guest to the physical device. see "man qm.conf" and "man qm" for details.

 

[FreeSoftwareServers]

@fabian I have reverted back to KVM, but its not hard for me to switch back to ProxMox. I was thinking of firing up a VM of ProxMox nested in KVM and passing through the disk drive to the VM to test passthrough to another VM lol. Could you give an example command? I did read the man qm page, but still couldn't figure out how to add BD Drive.

 

[fabian]

@fabian I have reverted back to KVM, but its not hard for me to switch back to ProxMox. I was thinking of firing up a VM of ProxMox nested in KVM and passing through the disk drive to the VM to test passthrough to another VM lol. Could you give an example command? I did read the man qm page, but still couldn't figure out how to add BD Drive.

replace VMID, X and the path according to your needs:

qm set VMID -scsiX /PATH/TO/DEVICE

or

qm set VMID -scsiX /PATH/TO/DEVICE,scsiblock=1

depending on whether you want full pass through or not - beware of

...
scsiblock=<boolean> (default = 0)
whether to use scsi-block for full passthrough of host block device

Warning
can lead to I/O errors in combination with low memory or high memory fragmentation on host
...