CMMVC8970E The storage pool was not deleted because there are volumes associated with the storage pool. A forced deletion is required.
Explanation
You cannot delete a storage pool that has any volumes still associated with it.
User response
Remove the associated volumes and retry the command, or use the -force flag:
rmmdiskgrp -force storage_pool
where storage_pool is either the name or the ID of a storage pool.
CAUTION:
Use of the -force flag can result in data loss. Contact
IBM® Support before using this
flag.