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[Xen-API] Re: Problems in extracting VIF metrics

To: "Sane, Abhijeet" <Abhijeet_Sane@xxxxxxx>
Subject: [Xen-API] Re: Problems in extracting VIF metrics
From: Jonathan Ludlam <Jonathan.Ludlam@xxxxxxxxxxxxx>
Date: Fri, 5 Mar 2010 12:18:08 +0000
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Thread-topic: Problems in extracting VIF metrics
Hi Abhijeet,

As Alberto mentioned, you should be using the RRD interface rather than looking 
at the VIF metrics. There's documentation about that
on the wiki:

http://wiki.xensource.com/xenwiki/XAPI_RRDs

Jon

On 5 Mar 2010, at 11:20, Sane, Abhijeet wrote:

> Hi ,
> 
> I am trying to extract VIF metrics data of all the VMs on a Citrix Xen host.
> I wrote the code as follows to iterate the VIF sets in all VMs and from the 
> VIF record of each VIF get the VIF metrics.
> The VIF metrics like I/O read / write rates are not available.
> 
> Please guide whether I am doing something wrong.
> 
> 
>       session = XenAPI.xapi_local(
>       session.xenapi.login_with_password("root","")
>       all = session.xenapi.VM.get_all()
>        try:
> 
>                for vm in all:
>                        try:
>                                record = session.xenapi.VM.get_record(vm)
>                                if  not record["is_control_domain"] and  not 
> record["is_a_template"] and record["resident_on"]
> :
>                                        domid = record["domid"]
>                                        name = record["name_label"]
>                                        vif_set = 
> session.xenapi.VM.get_VIFs(vm)
>                                        for vif in vif_set:
>                                                               vif_metrics = 
> session.xenapi.VIF.get_metrics(vif)
>                                                vif_rec = 
> session.xenapi.VIF.get_record(vif)
>                                                mac_addr = vif_rec["MAC"]
>                                                metrc =  
> session.xenapi.VIF_metrics.get_record(vif_rec["metrics"])
>                                                               # I have 
> removed the code to extract io_read and io_write at this point of time .
>                                        loca_str =  '%s,%s,%s,%s,%s\n' % 
> (domid , name , mac_addr ,io_read ,io_write)
>                                        csv_string = csv_string + loca_str
> 
>                                domid = ""
>                                name = ""
>                                mac_addr = ""
>                                io_read = ""
>                                io_write = ""
> 
>                        except Exception, e:
>                                print "Exception 1",e
>                                loca_str =  '%s,%s,%s,%s,%s\n' % (domid , name 
> , mac_addr ,io_read ,io_write)
>                                csv_string = csv_string + loca_str
> 
>        except Exception ,e:
>               print "Exception 2",e
>            loca_str =  '%s,%s,%s,%s,%s\n' % (domid , name , mac_addr ,io_read 
> ,io_write)
>            csv_string = csv_string + loca_str
> 
> 
> 
> 
> 
> Program output is as follows
> -------------------------------
> 
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:96f906d4-7826-97cc-c85e-9073a9271b02']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:6b85fae4-3e72-5f7a-7dab-2765ca9fb659']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:754f4f2e-566c-945b-7e60-479c8b19abde']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:fab22cb7-8cee-857f-ad11-77eb7a331717']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:80c3d61b-802f-a4a2-4bd7-dca9c7069766']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:09cd33b9-f1d3-f37c-37df-1e48ed029785']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:f8d0bc81-a695-a471-ac49-e70b2e23da99']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:7583302f-0e7b-8cf3-d1b3-4f661fad30cd']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:29fd1bbf-be28-5481-361d-639c3fcc79a2']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:bac40158-2bbe-7b19-fb9f-8d6435599f12']
> Exception 1 ['HANDLE_INVALID', 'VIF_metrics', 
> 'OpaqueRef:82db2114-6376-43ad-2f06-255841a1a3aa']
> 2,xen-w2k3-v4,de:3a:0c:0e:b0:b2,,
> 1861,xen-w2k3-v7,16:20:b6:0b:05:5c,,
> 1866,win2k8x64,ee:4c:51:d4:d9:3f,,
> 1864,xen-w2k3-v5,46:cf:2f:59:99:4d,,
> 1863,xen-w2k3-v6,62:b6:09:53:aa:f4,,
> 1867,xen-win2k-v3,8a:a7:b9:31:9e:42,,
> 1,xen-winxp-v2,6e:19:cc:4c:73:9f,,
> 4,xen-vm1,ea:6c:34:15:62:6f,,
> 3,xen-vm2,12:4f:f3:2e:62:89,,
> 2,RHEL_5.3_V11,a6:6d:78:97:ee:d3,,
> 1,xen-rlnx53-v1,2a:f9:c4:18:3e:40,,
> 
> 
> 
> 
> 
> 
> Regards
> Abhijeet
> 


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