topic Re: How to get NAA for lun or volume in Software Development Kit (SDK) and API Discussions

How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Thu, 05 Jun 2025 06:06:52 GMT

Hi,

I am looking for ways to get NAA identifier for NetApp volumes and luns using DFM Server API. Does DFM's API provide such functionality?

Thanks in advance for any help.

Re: How to get NAA for lun or volume

rle — Thu, 28 Mar 2013 07:21:58 GMT

Hi Hasmik,

Are you looking for the LUN WWID or WWN? If so, it is: made of 0x60a9800 + the hexadecimal equivalent of the LUN status. The LUN status is returned from lun-list-info API.

Volume and LUNs have UUIDs but are available from ONTAP APIs.

Regards,

- Rick -

Re: How to get NAA for lun or volume

obrakmann — Tue, 02 Apr 2013 13:34:37 GMT

Hi Rick,

what do you mean by "LUN status"?

Looking in the Ontap SDK documentation for the lun-list-info API call, I can see several fields that might apply: "device-id", which is a 32bit integer value (and optional, it didn't show up in my tests), "serial-number", which is a string, and "uuid", which is also a string.

Thanks in advance for clarifying.

Regards,

Oliver

Re: How to get NAA for lun or volume

obrakmann — Tue, 02 Apr 2013 14:08:17 GMT

OK, so I found the answer myself: it's the serial-number field.

Re: How to get NAA for lun or volume

rle — Tue, 02 Apr 2013 15:59:14 GMT

Glad you found it.

- Rick -

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Wed, 03 Apr 2013 06:29:55 GMT

Hi Rick,

Actually I am looking for ways to find mapping between VMFS datastore and NetApp lun(or volume). I am not sure that getting WWN or WWID of a lun can help me with finding it's corresponding datastore.

The information I have about the datastore is its name and naa.

I would appreciate if anyone could help me with that.

Thanks,

Hasmik

Re: How to get NAA for lun or volume

obrakmann — Wed, 03 Apr 2013 12:49:46 GMT

Arguably the easiest way to map from a LUN to the corresponding datastore is to use the VSC. That's manual though, no programming involved.

If you need a program or a script to do the mapping, Rick's answer already was correct:

A LUN's 'naa.' number IS its WWN, it's just another name.

To get the WWN, you use the serial-number of the LUN, convert it to its hexadecimal ASCII representation* and prefix it with "naa.60a98000". You can get the LUN serial-number using the 'lun-list-info' API call (to a filer, not to the DFM).

Hope that clears it up.

* So, a '1' is 0x31, an 'a' is 0x61 etc.

Re: How to get NAA for lun or volume

RAVI_PALADUGU — Wed, 03 Apr 2013 13:09:31 GMT

Please mark it answered if you got this resolved.

Thanks

Ravi

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Thu, 04 Apr 2013 06:10:05 GMT

Thank you very much guys, now it's clear for me what I am going to do

Thanks a lot!!!

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Thu, 04 Apr 2013 07:15:13 GMT

But look, I can get serial-number of the lun using ONTAPI, but I am using DFM API.

Using DFM API lun-list info retrurns two statuses - object-status, object-perf-status, but possible values for them are 'unknown', 'normal', 'information', etc...

So what to do with DFM API?

Regards,

Hasmik

Re: How to get NAA for lun or volume

obrakmann — Thu, 04 Apr 2013 10:29:10 GMT

With the DFM API, you have to use the 'lun-list-info-iter-start', '-next' and '-end' methods. The -next method returns a 'lun-info' structure which has a 'lun-serial-number' field.

See the API docs at

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Thu, 04 Apr 2013 10:41:32 GMT

Thank you for your help.

I was looking for lun serial number in DFM Server API 4.0 documentations, that's why I didn't find it. Now I see it's present in later versions.

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Thu, 04 Apr 2013 12:05:05 GMT

That is wonderful, I just got the naa of a lun.

But what am I supposed to do with volumes? They don't have serial number.

Regards,

Hasmik

Re: How to get NAA for lun or volume

obrakmann — Fri, 05 Apr 2013 10:03:41 GMT

A volume has a UUID, though, which is its unique identifying feature.

To get from the LUN to the containing volume, you take the "volume-id" field from the same structure that has the LUN's serial number, and pass it to the "volume-list-iter-start" API call in its "object-name-or-id" parameter. The details are all in the API docs.

If you just need the name of the volume, that is also available from the structure returned by "lun-list-iter-next". The field is called "volume-name".

Which way you choose all depends on what you want to achieve in the end. Have fun and good luck!

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Fri, 05 Apr 2013 14:10:59 GMT

Thanks for your reply

What I need is to construct naa for volume too.

Re: How to get NAA for lun or volume

obrakmann — Sat, 06 Apr 2013 09:24:34 GMT

You've lost me at this point. There is no such thing.

Re: How to get NAA for lun or volume

OPMANAGER — Mon, 08 Apr 2013 14:22:18 GMT

I had similar doubts on finding WWN of NetApp LUNs. I found the serial number of one my LUNs as nBK/R4qS/yL9nBK/R4qS/yL9 . Used a piece of java code to convert this to hexa as suggested here and got 6e424b2f523471532f794c396e424b2f523471532f794c39 as WWN. Is this right? Can someone confirm. Or should I remove the "/" in serial number before going for hexa conversion.

Regards,

Muthukumaran M.

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Mon, 08 Apr 2013 14:24:32 GMT

I see. Thanks a lot for your help

Re: How to get NAA for lun or volume

HASMIK_HAYRAPETYAN — Mon, 08 Apr 2013 14:34:47 GMT

When I constructed naa for lun from it's serial number, I checked the result with naa that I got through VMware vSphere CLI. I used "esxcli storage core path list" command to get lun NAAs.

You also can check it this way, if you use VMware vSphere Command Line Interface.

Re: How to get NAA for lun or volume

joelg — Mon, 03 Mar 2014 14:25:04 GMT

In case VSC is not installed you can use the following from linux box:

Original VMware device: naa.60a980002d643877753f426131466853

LUN sn: -d8wu?Ba1FhS

>echo 2d643877753f426131466853 | xxd -r -p

-d8wu?Ba1FhS%

________________________________________

Or Simply google for a hex to ascii converter.

________________________________________

Or if you're planning on converting regularly, you could add the following to your .barsh/.zshrch file:

naaconv () {

echo "$*"|xxd -r -p

}

Which results on just having run the following:

> naaconv 2d643877753f426131466853

-d8wu?Ba1FhS%