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RE: [Xen-API] XCP Feature propose - send/receive OS information using introspection


  • To: 'Marco Sinhoreli' <msinhore@xxxxxxxxx>, xen-api <xen-api@xxxxxxxxxxxxxxxxxxx>
  • From: Dave Scott <Dave.Scott@xxxxxxxxxxxxx>
  • Date: Wed, 8 Dec 2010 18:37:12 +0000
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc: Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>
  • Delivery-date: Wed, 08 Dec 2010 10:37:54 -0800
  • List-id: Discussion of API issues surrounding Xen <xen-api.lists.xensource.com>
  • Thread-index: AcuXA1EtqiDD7YjjQz6BBF8NtemnzQAAlTTg
  • Thread-topic: [Xen-API] XCP Feature propose - send/receive OS information using introspection

> Hello guys:
> 
> I have a propose to adapt the xapi to send and receive information
> to/from guest OS. This propose don't take risk to security of XCP
> architecture and is a interesting feature to cloud system. With this
> is possible interact with the guest OS to request information from
> daemon written using the API. To do this need to change the
> permissions of introspection channel in Domain-0 of all VM and enable
> the api to send and to receive strings needing attach in a dictionary
> the uuid of VM and the text sent by daemon.
> 
> Thoughts?

Hi Marco,

I'd also really like a way for a XenAPI client to communicate securely with an 
in-guest agent. Were you thinking of an RPC-like mechanism or something more 
stream-based?

For the dom0 to domU hop we could use "V4V" (which is already part of XCI). I'm 
not sure what the best API would look like and how it would behave over a VM 
migration-- perhaps we should make a list of example uses first and proceed 
from there?

Cheers,
Dave
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