Physical space for a space efficient volume can be released in
the following ways:
- Initialize the volume using ICKDSF INIT.
- Release space during FlashCopy® establish
processing if the target volume is a space efficient volume and use
the establish operation to create a new relationship.
- Specify the space release option on an FCWITHDRAW request (with ANTRQST or ANTTREXX), or with an ICKDSF FLASHCPY
WITHDRAW request.
Note: - The volume space is not released if the following situations occur:
- You choose the the ICKDSF INIT option.
- The initialized volume is a space efficient volume.
- The volume is also currently the source of a FlashCopy relationship.
- If you use the space release option, all space associated with
the space efficient volume is returned to the repository, and the
volume is not initialized. Do not use the space release option until
ICKDSF INIT is run against the device. Use the ICKDSF INIT to release
space associated with a volume. The allocated space is released asynchronously
so may not be reported immediately.