Hi,
You have to check the IMT (https://support.netapp.com/matrix) with the current Hosts or Guest OS, Snapdrive version and the target DOT version.
When done, update to the latest snapdrive version and after do a NDU (software update DOT_VERSION_q_image.tgz on both node and then takeover/giveback on both node).
Snapdrive manage only the snapshot creation, not the access lun.
Regards,
François