topic 'None' value of field 'instance_uuid' for 7-mode lun and Aggregate performance data in Simulator in Software Development Kit (SDK) and API Discussions

'None' value of field 'instance_uuid' for 7-mode lun and Aggregate performance data in Simulator

Shivang — Wed, 04 Jun 2025 18:08:13 GMT

In NETAPP 7-mode simulator, We are getting a value "None" of the field 'instance_uuid' for 7-mode lun performance and Aggregate performance data, although this field(instance_uuid) has a correct value into inventory data. We want to confirm that will we get the correct value (Not 'None' value) field in the real environment?

Re: 'None' value of field 'instance_uuid' for 7-mode lun and Aggregate performance data in Simulator

FelipeMafra — Sat, 10 Dec 2016 10:02:11 GMT

Hi,

Have checked the returned XML on Zedi? How is that being returned?

Re: 'None' value of field 'instance_uuid' for 7-mode lun and Aggregate performance data in Simulator

Shivang — Tue, 13 Dec 2016 12:40:09 GMT

I have checked xml response in Postman call. Here is response:

<netapp version='1.1' xmlns='http://www.netapp.com/filer/admin'>
    <results status="passed">
        <timestamp>1481632348</timestamp>
        <instances>
            <instance-data>
                <name>/vol/test_vol1/test_lun01-BmRoB$IDc6tR</name>
                <counters>
                    <counter-data>
                        <name>instance_name</name>
                        <value>/vol/test_vol1/test_lun01-BmRoB$IDc6tR</value>
                    </counter-data>
                    <counter-data>
                        <name>instance_uuid</name>
                        <value></value>
                    </counter-data>
                    ...

Re: 'None' value of field 'instance_uuid' for 7-mode lun and Aggregate performance data in Simulator

FelipeMafra — Wed, 14 Dec 2016 00:38:41 GMT

Hi,

I've tried this on my production environment and I got the same result. It's not returning any value.

If you are using this for identifying LUN you should use instance name which is the visible name plus serial.

I am not sure but I think this uuid field only returns a value if you have set LUN id.

Re: 'None' value of field 'instance_uuid' for 7-mode lun and Aggregate performance data in Simulator

Shivang — Wed, 14 Dec 2016 05:24:32 GMT

We have used the same thing you suggested for indentifying LUN.

Thanks for your support.