Should I use the LVM resource with GFS2 to control logical volume groups?

I am studying the RH436 Red Hat High Availability Clustering materials, but there's something that confuses me a bit. I hope somebody can help me understand it.

I want to configure clustered LVM volumes using clvmd and Pacemaker for Active/Active LVM configuration on top of a multipath device. When I am configuring a HA-LVM with tagging for Active/Passive (exclusive LVM access) on a multipath device, I need to create two resources in the same group (let's call it halvmfs) - LVM resource (exclusive=true) + Filesystem resource (xfs). In the course materials, it's not mentioned whether I need to use LVM resource (not exclusive) for managing a logical volume groups with Active/Active LVM configuration?

The following two articles suggest that I should, though:
https://access.redhat.com/solutions/530223
https://access.redhat.com/solutions/1118553

Basically we have the following situations:
1) Shared, multipath ISCSI device used with LVM in Active/Passive configuration (LVM to manage volume group with exclusivity)
2) Shared, multipath ISCSI device used with LVM in Active/Active configuration (LVM clones to manage volume group without exclusivity)
3) Non-shared devices used with LVM in Active/Passive configuration (LVM clones to manage volume group without exclusivity)

My question concerns 2) and maybe 3).

Any help would be very appreciated!