Re: cdrom scsi passthough not working well

[Philippe Mathieu-Daudé]

Cc'ing qemu-block@ developers.

On 10/28/20 6:18 AM, daggs wrote:
> Greetings,
> 
> I have a vm running under qemu 5.1.0 with a cdrom scsi passthough into it.
> I can eject the device in and out but when I insert a disc, is isn't detected 
> and the dmesg on the guest is filled with these prints:
> [384216.443262] sr 0:0:0:0: ioctl_internal_command return code = 8000002
> [384216.443268] sr 0:0:0:0: Sense Key : 0xb [current]
> [384216.443272] sr 0:0:0:0: ASC=0x0 ASCQ=0x6
> [384218.504142] sr 0:0:0:0: ioctl_internal_command return code = 8000002
> [384218.504150] sr 0:0:0:0: Sense Key : 0xb [current]
> [384218.504153] sr 0:0:0:0: ASC=0x0 ASCQ=0x6
> [384220.561302] sr 0:0:0:0: ioctl_internal_command return code = 8000002
> [384220.561308] sr 0:0:0:0: Sense Key : 0xb [current]
> [384220.561312] sr 0:0:0:0: ASC=0x0 ASCQ=0x6
> 
> the vm is uefi q35 based, generated by libvirt 6.8.0, the cdrom part is this:
> -blockdev 
> {"driver":"host_device","filename":"/dev/sg0","node-name":"libvirt-2-backend","read-only":true}
> -device 
> scsi-generic,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=libvirt-2-backend,id=hostdev0
> 
> id there something bad with the config or have I encountered a bug?
> 
> Thanks,
> 
> Dagg.
>