copying volume的几种方法：
参考链接：
http://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.exp-vol-move%2Fhome.html
vol move使用的迁移场景： 参考链接； https://library.netapp.com/ecmdocs/ECMP1368845/html/GUID-B3308AD0-0D6C-4718-8A65-B7902ED63FDF.html
During the cutover phase of volume move operation, you cannot initiate any SnapMirror operation on the volume that is being moved. Also, when the snapmirror initialize, snapmirror update, and snapmirror resync operations are in progress, volume move does not enter into the cutover phase. 参考链接： https://library.netapp.com/ecmdocs/ECMP1368826/html/GUID-B9C53610-AE02-4C25-BD99-08C90B492A43.html
If the operation fails, no action is required; the volume remains on the source aggregate. You can review the Detailed Status field for information about the cause. 参考链接： https://library.netapp.com/ecmdocs/ECMP12425790/html/GUID-6C1D3A4C-40C1-4814-81D4-11DEF0696219.html
