The standard method for identifying which data LUNs are controlled by VxVM or LVM is to use the 'vxdisk list' command and review the output.
To identify data LUNs controlled by VxVM or LVM
Disks that are under LVM control disk_0 auto:LVM - - LVM v_xiv0_108a auto:LVM - - LVM Disks that are under VxVM control ibm_ds8x000_06cd auto:aixdisk - - online ibm_ds8x000_06cf auto:cdsdisk - - online Disks that are not under any volume manager control. ibm_ds8x000_06ce auto:none - - online invalid
Once you identify the LUNs controlled by LVM you can select the ones you want to release for the available storage pool. You must use the native LVM commands rmlv and reducevg to remove LVM volumes and volume groups created on those LUNs as illustrated below.
For more details on managing volumes, see the Storage Foundation Administrator's Guide.