[Qemu-devel] sharing directories with Windows guest - virtio pci p9 on Windows

[Qemu-devel] sharing directories with Windows guest - virtio pci p9 on Windows

[Behrooz Shabani]

Hi all,

I was wondering if anyone has information regarding Windows driver of
virtio pci p9.

Our users can have multiple VM instances running and providing some sort of
shared storage between different VMs would be very useful for them.

I know that the alternate is to use SMB but because of networking
constraints, we can't use it.

Any information on how to have a shared storage between different running
VMs that would not require `-net user` is very much appreciated as well.

-- 
regards,
behrooz

Re: [Qemu-devel] sharing directories with Windows guest - virtio pci p9 on Windows

[Thomas Huth]

On 30.05.2017 08:22, Behrooz Shabani wrote:
[...]
> Any information on how to have a shared storage between different running
> VMs that would not require `-net user` is very much appreciated as well.

If you need the storage just for transferring files, you could also try
the "-device usb-mtp" ... that emulates a Media Transfer Protocol device
(similar to a camera / mobile phone).

 Thomas

Re: [Qemu-devel] sharing directories with Windows guest - virtio pci p9 on Windows

[Behrooz Shabani]

Thanks Thomas.

A question though: is it gonna be writable by guest? I'm asking because
what I found about this feature mentioned that it's readonly ATM.

http://events.linuxfoundation.org/sites/events/files/slides/Qemu_USB.pdf
https://lists.gnu.org/archive/html/qemu-devel/2014-04/msg03466.html

On Tue, May 30, 2017 at 9:50 AM, Thomas Huth <huth@tuxfamily.org> wrote:

> On 30.05.2017 08:22, Behrooz Shabani wrote:
> [...]
> > Any information on how to have a shared storage between different running
> > VMs that would not require `-net user` is very much appreciated as well.
>
> If you need the storage just for transferring files, you could also try
> the "-device usb-mtp" ... that emulates a Media Transfer Protocol device
> (similar to a camera / mobile phone).
>
>  Thomas
>
>
>


-- 
regards,
behrooz

Re: [Qemu-devel] sharing directories with Windows guest - virtio pci p9 on Windows

[Thomas Huth]

On 30.05.2017 11:46, Behrooz Shabani wrote:
> Thanks Thomas.
> 
> A question though: is it gonna be writable by guest? I'm asking because
> what I found about this feature mentioned that it's readonly ATM.

Oh, sorry, seems like you're right. I though it would support writing,
but looking at the history of that file, it has never been implemented.
So never mind, MTP is likely not a solution for your problem.

 Thomas


> On Tue, May 30, 2017 at 9:50 AM, Thomas Huth <huth@tuxfamily.org> wrote:
> 
>> On 30.05.2017 08:22, Behrooz Shabani wrote:
>> [...]
>>> Any information on how to have a shared storage between different running
>>> VMs that would not require `-net user` is very much appreciated as well.
>>
>> If you need the storage just for transferring files, you could also try
>> the "-device usb-mtp" ... that emulates a Media Transfer Protocol device
>> (similar to a camera / mobile phone).