Hi, On 02/09/2011 10:40 AM, liang.lian...@zte.com.cn wrote:
Dear all, As you know VDI is believed to be one of most promising technologies in cloud-computing ages, different companies or communities have different VDI protocol definitions, such as SPICE, RDP and ICA. Some are open, while some are proprietary protocols. Considering large deployment in future, inter-operatability will be key issue. So it's important to make VDI protocol open and standard. We submitted two drafts (problem statement and survey, pls. refer to below links for details) to IETF-80 (http://www.ietf.org/meeting/80/index.html) and will hold a bar BoF during IETF-80 in Prage. So we are sending this mail: 1) request for your comments or suggestions for the two draft documents; 2) if you're interested in the VDI standardization, please you attend the upcoming IETF meeting. http://datatracker.ietf.org/doc/draft-wang-clouds-vdi-problem-statement/ http://datatracker.ietf.org/doc/draft-ma-clouds-vdi-survey/
Interesting. I've read both documents and I've some comments wrt the vdi survey and spice. First of all I would choose a different term / name for the component of RDP / ICA which run inside the guest to capture the graphics then agent. Many virtualization solutions including non vdi solutions such as vmware workstation (an example where the client viewing the vm and the host are one and the same machine), have a small agent process inside the guest os which allows things like copy paste between the guest os and the client os, and controlling attaching local drives to the virtual machine from within the guest. And virtualization related agents are also typically used in server virtualization scenarios, so I think agent is a bad name for the graphics capturing part of RDP / ICA, as this can easily be confused with the more light weight agents common in most virtualization solutions. Spice also has such a light weight agent, which is used amongst other things for copy and paste. You mention copy and paste as a future spice feature, but that has been present in spice since the 0.6.3 release. Offscreen surfaces are supported since the 0.6.0 release (for 2d) and multi head has been supported even longer. Currently multihead support is limited to windows as guest os (but works with any client). Also usb-sharing is currently supported already in the official RHEV versions, through a proprietary component. An open source replacement for this is coming along nicely. Last you also list vmware as using software inside the guest to capture graphics output. I'm not familiar with vmware's vdi offering. But for vmware workstation this is not true, in their workstation edition vmware uses a special vmware virtual svga card for this. Regards, Hans _______________________________________________ Spice-devel mailing list Spice-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/spice-devel
