Re: [Xen-API] XenAPI & DomU Memory Usage

[Giuseppe Civitella <giuseppe.civitella@xxxxxxxxx>]

Hi all,

I've got a similar problem trying to retrive xenapi's values. While
I'm able to fetch total and used memory using RRD's, I'm not yet able
to retrive disk's data using VM_guest_metrics.
I'm referring to this page:
http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/index.html?c=VM_guest_metrics
In "disks" field I was expecting to find "total disk / used disk"
values but I'm not.
Any idea about the missing value?

Thanks




2012/5/1 Jonathan Ludlam <Jonathan.Ludlam@xxxxxxxxxxxxx>:
> You can use the API call 'VM.query_data_source' to query a single RRD data 
> source through the API.
>
> e.g.
>
> [root@st21 ~]# python
> Python 2.4.3 (#1, Sep 21 2011, 20:06:00)
> [GCC 4.1.2 20080704 (Red Hat 4.1.2-51)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import xmlrpclib
>>>> s=xmlrpclib.Server("http://localhost/";)
>>>> s.session.login_with_password("root","root")
> {'Status': 'Success', 'Value': 
> 'OpaqueRef:1d1f04f1-f01d-a585-6e27-30ee9da3da2f'}
>>>> sess='OpaqueRef:1d1f04f1-f01d-a585-6e27-30ee9da3da2f'
>>>> vm=s.VM.get_by_uuid(sess,'c4d25869-386d-4238-2bc4-851b021a14e2')['Value']
>>>> s.VM.query_data_source(sess,vm,'memory')
> {'Status': 'Success', 'Value': 268435456.0}
>
> This is, of course, only recommended if it's all you want. Don't query all 
> data sources on all VMs on all hosts every five seconds like this - use the 
> RRDs :-)
>
> Jon
>
> On 25 Apr 2012, at 14:10, Frederik Van Hecke wrote:
>
>> Hi,
>>
>> I'm running XCP 1.5 Beta with xen-tools installed in the DomU.
>> Both XenCenter (6.0.2) as xsconsole show the actual memory usage of the VM.
>> However the memory record for the vm's guest_metrics is empty.
>>
>> I was wondering whether that memory usage is retrievable through the API or 
>> not?
>> I know it's in the RRD's, but if I can get it through the API that'd be so 
>> much more consistent / convenient.
>>
>> Any help / direction very much appreciated. Thank you.
>>
>>
>> Kind regards,
>> Frederik
>> _______________________________________________
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>> Xen-api@xxxxxxxxxxxxx
>> http://lists.xen.org/cgi-bin/mailman/listinfo/xen-api
>
>
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