A simultaneous write to a primary and copy storage pools failed to release all the acquired mount points. When a simultaneous write operation begins it will attempt to acquire all of the necessary mount points. If a mount point cannot be acquired or the simultaneous write operation has to wait for a mount point, then the operation will release any mount points it has already acquired. This prevents the simultaneous write operation from holding mount points and other mount requests from completing. This message is issued if one of the previously acquired mount points cannot be released.