When RAID is configured, no additional changes to the partitions in the disks containing physical volumes are allowed.  Please convince yourself that you are satisfied with the current partitioning scheme in these disks.
Mi ara yettuswel RAID, ulac asireg n yisenfal-nniḍen n yiḥricen n yiḍebsiyen ideg llan iblaɣen iɣaranen. Ma ulac aɣilif, seqneɛ iman-ik·im iɛǧeb-ak·am uzenziɣ n beṭṭu amiran n yiḍebsiyen.