[vfio-users] optical eject issue

[Roger Lawhorn]

I will give this a try....
Seems like we have a winner.
:-D

On 5/23/20 2:54 PM, leesteken at pm.me wrote:
>> Hello,
>>
>> On 5/23/20 12:12 AM, Roger Lawhorn wrote:
>>
>>> ok, sorry, did a reply instead of a reply to all....
>>> I have used the -cdrom /dev/sr0 option.
>>> When you say 'virtual' optical drive, are you talking about an iso or a physical
>>> optical drive?
>>> I am adding a physical optical drive.
>> To pass through a physical optical drive, you need to use qemu's SCSI generic
>> device, not a SCSI CD device. In this case, qemu will forward SCSI commands
>> as-is instead of adding its own emulation layer on top. This means that an
>> "eject" command will be handled by your physical drive, and not by qemu.
>>
>> For example, from one of my own qemu scripts:
>>
>> -device virtio-scsi-pci,bus=pcie.0 \
>> -device scsi-hd,drive=hd0 \
>> -drive file=/dev/sdc,format=raw,id=hd0,if=none,unit=0 \
>> -device scsi-generic,drive=cd0 \
>> -drive file=/dev/sg2,format=raw,id=cd0,if=none,unit=1 \
>>
>> I've successfully used this arrangement to rip dozens of CD-ROMs using CUETools.
>> Attempting to eject sometimes takes 3 or 4 tries, especially if the device is
>> still in use, but it does eventually work. Another thing you can do is run
>> `eject /dev/sr0` on the host, even while the VM is running, which always ejected
>> immediately.
> Thank you for this example! I just tried this and eject works fine for me (on Linux).
> I'm quite confident that this will help Roger resolve his problem.
>
> Personally, I won't be using it because it does not allow for (CSS-encrypted) DVD playback.
>
> kind regards, Arjen
>
>
>
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