topic Re: How to set Volume snapshot reserve in root volume of node svm ? in Microsoft Virtualization Discussions

How to set Volume snapshot reserve in root volume of node svm ?

AllenChang — Wed, 04 Jun 2025 09:57:01 GMT

I want to set the volume snapshot reserve in

PS C:\Users\Administrator> Get-NcVol

Name State TotalSize Used Available Dedupe Aggregate Vserver
---- ----- --------- ---- --------- ------ --------- -------
vol0 online 3.2 GB 46% 1.6 GB False aggr0_cluster1_01 cluster1-01
vol0 online 3.2 GB 48% 1.5 GB False aggr0_cluster1_02 cluster1-02

PS C:\Users\Administrator> Set-NcSnapshotReserve vol0 -VserverContext cluster1-01 -Percentage 10
Set-NcSnapshotReserve : Unable to find API: snapshot-set-reserve on node vserver cluster1-01
位於線路:1 字元:1
+ Set-NcSnapshotReserve vol0 -VserverContext cluster1-01 -Percentage 10
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (20.1.1.1:NcController) [Set-NcSnapshotReserve]，EAPINOTFOUND
+ FullyQualifiedErrorId : ApiException,DataONTAP.C.PowerShell.SDK.Cmdlets.Snapshot.SetNcSnapshotReserve

But It always appear the error

How to set the snapshot reserver in root volume of node svm ?

Thanks

Re: How to set Volume snapshot reserve in root volume of node svm ?

aladd — Tue, 30 Aug 2022 09:43:21 GMT

You cannot modify the snap reserve of a root volume by design.

Attempting from the ONTAP CLI yields the following output:

Re: How to set Volume snapshot reserve in root volume of node svm ?

aladd — Tue, 30 Aug 2022 11:39:09 GMT

Is the goal to recover some additional space in the root volume in this case?

Re: How to set Volume snapshot reserve in root volume of node svm ?

AllenChang — Fri, 02 Sep 2022 03:19:04 GMT

because it is a simulator,

so I want to stop the snapshot

Re: How to set Volume snapshot reserve in root volume of node svm ?

aladd — Fri, 02 Sep 2022 03:30:34 GMT

The Snapshots in the root vol can be useful for events like deleted core files that need to be re-uploaded.

However you should be able to modify the volume attributes to stop volume snapshots. Otherwise reducing the snap reserve doesn't stop snapshots it will start to bleed over into the volume space over time unless you disable snapshots.

REF:

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/How_to_disable_root_volume_snapshots_in_ONTAP_9