Xen users - Feb 2009 - [Xen-API] VM Guest Metrics Error (MESSAGE_METHOD_UNKNOWN)

Hi all,

I use the python binding of Xen API. I want to query some guest
information, so I have a code like:

# ... open session, login, etc ...
metrics = session.xenapi.VM.get_metrics(vmref)
g_metrics = session.xenapi.VM.get_guest_metrics(vmref)

The first one returns a VM_metrics object successfully. But the second
one gives the following error:

XenAPI.Failure: MESSAGE_METHOD_UNKNOWN

Question: Am I doing something wrong or is "VM_guest_metrics" not
implemented? (If so, why is it there in the API reference 1.0.6??)

I use Xen 3.2.1

Cheers,
Ercan

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Apparently the latest version of open source xen 3.3.1 has very little
support for guest metrics. Keyword: "xenballoon deamon".

One has to install a bunch of tools in each of the PV guests to get internal
metrics from it, and there is even a distro restriction (it only supports
redhat for now).

I assume that only the commercial Xen really sticks to the Xen API on the
xensource page.

I wonder if there is a documentation about what parts of the Xen API is
actually implemented in the current version of Xen, and what not..


On Mon, Feb 9, 2009 at 2:48 PM, S. Ercan Yüzbasioglu <
ercan.yuzbasioglu@gmail.com> wrote:
> Hi all,
>
> I use the python binding of Xen API. I want to query some guest
> information, so I have a code like:
>
> # ... open session, login, etc ...
> metrics = session.xenapi.VM.get_metrics(vmref)
> g_metrics = session.xenapi.VM.get_guest_metrics(vmref)
>
> The first one returns a VM_metrics object successfully. But the second
> one gives the following error:
>
> XenAPI.Failure: MESSAGE_METHOD_UNKNOWN
>
> Question: Am I doing something wrong or is "VM_guest_metrics" not
> implemented? (If so, why is it there in the API reference 1.0.6??)
>
> I use Xen 3.2.1
>
> Cheers,
> Ercan
>

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