Hi,
I am trying to share devices between vm’s. For example I want to use a cdrom-drive who is exposed to a vm from another vm over the network.
In addition to this I want to use virtio for this idea.
What I am trying to do step by step:
- If virtqueue_pop is called on the KVM 2 I take the iovec structure information
- I send it over to the KVM 1
- KVM 1 put it into the own virtqueue_pop
- KVM 1 wait for virtqueue_push
- KVM 1 take the information from virtqueue_push
- KVM 1 send it over to KVM 2
- KVM 2 put it into the virtqueue push
|----------------------| |--------------------|
| | | |
| KVM 1 | | KVM 2 |
| | | |
| | | |
|----------------------| |--------------------|
| | | | | |
| | | | | |
| | | | | |
| /--------\<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<</-----\ |
First virtqueue | | | TCP/IP Connection | | Second Virtqueue
| | |>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>| | |
| \-------/ \_____/ |
| | | |
| | | _______________________
----------------------- | |
| | | |
| | | |
| Host 1 | | |
| | | Host 2 |
|______ | | |
| | | | |
| CDROM| | | |
|______|______________| |----------------------|
I tried it already slightly different by stopping KVM 1 and only waiting for request of KVM 2 but there are some problems with the iovec buffer address I am not able to use as a address of the buffer.
Has somebody experience with that or an idea of doing this maybe in a more smarter way or is it generally possible to do that?
Thank you for your help
David Leib
SAP Research Belfast
SAP (UK) Limited I The Concourse I Queen's Road I Queen's Island I Belfast BT3 9DT
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