Reversing physical block sharing in split FlexClone volumes

If you have split a FlexClone volume from its parent volume, you must undo the sharing of any physical block between the clone and its parent volume before reverting from ONTAP 9.5 or later to an earlier version of ONTAP.

1. Log in to the advanced privilege level: set -privilege advanced
2. Identify the split FlexClone volumes with shared physical blocks: volume clone sharing-by-split show

   Example

   TDC-DM7K::> volume clone sharing-by-split show 
   Node            Vserver   Volume        Aggregate
   --------------- --------- ------------- -------------
   TDC-7K-01           vs1       vol_clone1    aggr1
   TDC-7K-02           vs2       vol_clone2    aggr2
   2 entries were displayed.
   
3. Undo the physical block sharing in all of the split FlexClone volumes across the cluster: volume clone sharing-by-split undo start-all
4. Verify that there are no split FlexClone volumes with shared physical blocks: volume clone sharing-by-split show

   Example

   TDC-DM7K::> volume clone sharing-by-split show
   This table is currently empty.