You will have to ask IBM to help you fix this

There are a few things that I know you need to have a look
If you are using the new 450 disks and you are using space efficient flash copy you must upgrade to the latest level.

There was problem on this also disk that are SAN boot root disk will have to be recreated in some cases to recover from this problem. This can be done by remirroring and moving the disk but then the old disk must be removed and recreated on the storage.