[ovirt-users] lvcache on partitioned ssd or only on full device?

Hi, If possible, I would like to configure a hyperconverged cluster with hosts' system partitions and the gluster's lvcache on partitions of SSDs in RAID1. Is it possible to define the lvcache on a partitioned device like /dev/sdaX ; or is it only supported to pass a whole device like /dev/sdb ? Thanks for your help