削除するノード上の MDV_CRS ボリュームが原因で、ノードをクラスタから削除できません：
Error: command failed: [Job 51523] Job failed: Failed to disable cluster-scoped metadata volume support prior to
remove node operation. Reason: Aggregate "aggr1" cannot be deleted because it contains a
system volume named "MDV_CRS_50106aaae75a11e48bad00a09865dcc1_B". This volume must be moved to another
aggregate before aggregate "aggr1" can be deleted.