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

[Jonathan Ludlam <Jonathan.Ludlam@xxxxxxxxxxxxx>]

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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