CMMVC6541E The task cannot be initiated because the provisioned capacity that you have requested for the volume is larger than the maximum capacity that is supported for the extent size.

Explanation
The extent size of the storage pool that you selected would require a larger number of extents
than the supported maximum to accommodate the provisioned capacity that you requested for the
volume.

User response
Either select a different storage pool that has an extent size that is large enough to
accommodate the requested provisioned capacity or specify a provisioned capacity that is supported
for the extent size of the storage pool that you selected, and resubmit the task.