[fedora-virt] DVD RW under KVM guest

Cole Robinson crobinso at redhat.com
Thu May 5 14:25:03 UTC 2011


On 05/05/2011 08:45 AM, Kevin Wolf wrote:
> Am 05.05.2011 14:38, schrieb Amit Shah:
>> On (Thu) 05 May 2011 [14:32:56], Kevin Wolf wrote:
>>> Am 05.05.2011 14:28, schrieb Amit Shah:
>>>> On (Tue) 03 May 2011 [10:07:27], Kevin Wolf wrote:
>>>>> Am 03.05.2011 09:09, schrieb Amit Shah:
>>>>>> On (Mon) 02 May 2011 [20:04:26], Radu Borsaru wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> (this is the third time I'm trying to post this thread; cc-ing virt-owner for help)
>>>>>>
>>>>>> Has made it to the list, stripping off that CC.
>>>>>>
>>>>>>> I'm using Fedora 14 with KVM/QEMU virtualization.
>>>>>>> I have created a XP guest that is working fine.
>>>>>>> However it cannot recognize the DVD-RW that I have available for the host. It can only mount a read-only DVD (/dev/sr0).
>>>>>>> If I open the details for the guest VM I cannot untick the read-only box that I can find under the storage options (it is grayed out).
>>>>>>> Is there any way I can mount this DVD as a rewritable media?
>>>>>>
>>>>>> Currently media is only exported as read-only to the guest.  RW is
>>>>>> possible, but there's no timeframe for it yet.
>>>>>
>>>>> Shouldn't it be possible via scsi-generic? Not sure if libvirt provides
>>>>> an interface for that, though.
>>>>
>>>> You mean passthrough of host cdrom over the scsi layer?
>>>
>>> Yes, SCSI passthrough is what I mean.
>>
>> Might work - don't think anyone has tested that.  Do
>> libvirt/virt-manager support that?
> 
> The qemu-devel mailing list archive suggests that this was Laurent
> Vivier's test case for scsi-generic, so I think at some point it has
> worked at least for one configuration.
> 
> If libvirt/virt-manager support it was exactly my question, so I can't
> help with that.
> 

Libvirt doesn't provide anyway to use scsi-generic AFAICT.

- Cole



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