ONTAP API Failed: Failed to modify efficiency configuration for volume "Volume_Name" of Vserver "SVM_Name": Cannot perform efficiency operations on deprioritized volume. To be able to perform efficiency operations, run "volume efficiency promote" command first.
開Case跟support確認後, Support給了一個類似的kb, 透過kb的方式就可以解決這個問題
https://kb.netapp.com/app/answers/answer_view/a_id/1098121
1.將Volume efficiency of
Cluster::> volume efficiency off –vserver SVM_Name -volume Volume_Name
2.更改Volume Policy
Cluster::> volume efficiency modify -vserver SVM_Name -volume Volume_Name -policy Default
3.Volume efficiency on
Cluster::> volume efficiency on -vserver SVM_Name -volume Volume_Name
之後就可以正常更改efficiency設定