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RE: [Xen-devel] release of 'xapi' toolstack

To: 'Dirk Utterback' <dirk.utterback@xxxxxxxxx>
Subject: RE: [Xen-devel] release of 'xapi' toolstack
From: Dave Scott <Dave.Scott@xxxxxxxxxxxxx>
Date: Wed, 4 Nov 2009 11:16:45 +0000
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Cc: Mark Johnson <johnson.nh@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "xen-api@xxxxxxxxxxxxxxxxxxx" <xen-api@xxxxxxxxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] release of 'xapi' toolstack



The windows drivers are freely distributable, but not open source. It’s not clear that various MSFT libraries used permit them to be open-source.


Regarding XenCenter: a cloud platform probably doesn’t need a windows GUI. Hopefully 3rd party clients will be able to manage xapi via its API (or, at some point, libvirt: http://www.xen.org/products/cloud_roadmap.html). We’ve included a simple prototype/proof-of-concept _javascript_ UI which shows how to talk to xapi via XMLRPC (with a JSON server-side shim for unmarshalling convenience). It’s capable of viewing consoles, powercycling VMs etc as well as automatically picking up metadata changes from the server via the event mechanism. We use it quite a lot internally when debugging stuff.


Hope this helps,



From: Dirk Utterback [mailto:dirk.utterback@xxxxxxxxx]
Sent: 04 November 2009 02:59
To: Dave Scott
Cc: Mark Johnson; xen-devel@xxxxxxxxxxxxxxxxxxx; xen-api@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] release of 'xapi' toolstack


  Thanks a lot.
  One quick question, is it likely the Windows things(XenCenter, pvdrivers, and others) open source someday as well?
I just don't want to be surprised again. :)


On Wed, Nov 4, 2009 at 2:35 AM, Dave Scott <Dave.Scott@xxxxxxxxxxxxx> wrote:

Mark Johnson wrote:
> Other than the GUI, what will remained closed source in the
> XenServer product?  i.e. are there any extensions to the cli,
> xapi? Any additional libs not present in xen-api-libs.hg?
> Any extensions to blktap?

At present a few server-side pieces are not open-source. These are (from memory):
1. the heartbeat/liveset management daemon which is needed for HA (xapi talks to this via a simple interface)
2. some 3rd party FC tools
3. a few storage backends (NetApp, EQL and StorageLink)

Some pieces of the XenServer product (eg 'Workload Balancing') are actually off-box windows services which talk to xapi via the API. These are closed.

> I assume things like the p2v and v2v tools will remain
> closed source...

Actually there is some basic linux P2V stuff in there: the install CD doubles as a P2V client, which uploads to a special 'P2V' VM (xen-api.hg/ocaml/p2v/p2v.ml)


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