topic Re: DFM 4.0.1 chargeback with FlexClones - how? in Active IQ Unified Manager Discussions

DFM 4.0.1 chargeback with FlexClones - how?

reide — Thu, 05 Jun 2025 06:57:38 GMT

IHAC who wants to use DFM 4.0.1's chargeback feature. However, they're using a lot of FlexClones. The customer would like the chargeback report to be based on the FlexVols/FlexClones actual *physical* space consumption. For example, as shown in the "aggr show_space" command:

Aggregate 'aggr0'

Total space WAFL reserve Snap reserve Usable space BSR NVLOG A-SIS
13GB 1400MB 0KB 12GB 0KB 7036KB

Space allocated to volumes in the aggregate

Volume                          Allocated            Used       Guarantee
demo_vol_a                           63MB            58MB            none     # Parent Volume
demo_clone_a1                      6428KB           620KB            none     # FlexClone Volume
demo_clone_a2                      6428KB           620KB            none     # FlexClone Volume
demo_clone_a3                      6428KB           620KB            none     # FlexClone Volume

(truncated for brevity)

Aggregate                       Allocated            Used           Avail
Total space                        2317MB           952MB            10GB
Snap reserve                          0KB             0KB             0KB
WAFL reserve                       1400MB           150MB          1249MB

However, DFM reports all FlexClones using *logical* space consumption, not physical. It reports each FlexClone as using the same capacity as its parent volume. In fact, I can't find a single DFM report that shows a FlexClone's actual physical space consumption. Therefore, when they attempt to run a chargeback report each FlexClone volume generates a charge of 1x the parent volume. In reality, each FlexClone's charge should be only a fraction of the parent volume.

Based on this, how can the customer generate chargeback reports based on actual physical capacity used for a FlexVol/FlexClone?

Re: DFM 4.0.1 chargeback with FlexClones - how?

adaikkap — Tue, 29 Mar 2011 05:44:12 GMT

Hi Earls,

DFM today does not have a report that give the efficency due to usage of clones.

Below is a report that generates the same.Read the readme.doc first to understand what it is and how to install.

Regards

adai

Re: DFM 4.0.1 chargeback with FlexClones - how?

reide — Thu, 31 Mar 2011 14:57:24 GMT

Thanks adai. This script is fantastic! This really opened my eyes as to how custom comment fields can be leveraged to create custom reports.

Re: DFM 4.0.1 chargeback with FlexClones - how?

adaikkap — Thu, 31 Mar 2011 16:04:39 GMT

Hi Earls,

If you are interested I can share couple of more scripts that we generated using script-plugin and custom comment field.

Regards

adai

Re: DFM 4.0.1 chargeback with FlexClones - how?

reide — Thu, 31 Mar 2011 16:07:12 GMT

adai,

I would love to see them and I'm sure others would as well. Thank you for sharing!

Re: DFM 4.0.1 chargeback with FlexClones - how?

lederman — Tue, 20 Nov 2012 23:38:47 GMT

Does this also work in DFM 5.0 (On Command Core)? I've tried to execute the script but I get errors. Could it be because I didn't add perl to the OpsMgr server?

Re: DFM 4.0.1 chargeback with FlexClones - how?

adaikkap — Mon, 11 Nov 2013 13:49:27 GMT

Yes, perl is required. If perl was installed after installation of DFM/OCUM, you will have to restart the dfm services.

Regards

adai

Re: DFM 4.0.1 chargeback with FlexClones - how?

darraghos — Fri, 07 Mar 2014 12:17:23 GMT

What an awesome script! Really useful. So basically, it just creates a report then calls some dfm.exe command lines and parses the output based on the logic to find the additional blocks used as outline here:

https://library.netapp.com/ecmdocs/ECMP1196986/html/GUID-868B8B03-C353-4296-B1FC-30AE8154AB87.html

Very cool!