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The LVM manual currently contains a procedure for configuring LVM in a cluster. That procedure assumes CLVM (with GFS2).  But this ignores the more common case of halvm.

The procedures for both LVM in a cluster and halvm are documented elsewhere (halvm in the HA Admin Guide, clvm in the gfs2 manual), so it might be better for the LVM manual just to summarize the differences but refer elsewhere for the actual procedures to avoid confusion.

I am going to clone off a separate BZ to deal with the issue of rewriting the procedure for configuring a mirrored volume in a cluster, since that's a huge task, to rewrite this for RAID volumes, and will require some discussion with both LVM and cluster developers.  What's currently in the manual is correct so I'm leaving it for now, but the plans are to update that section.

I have separated out the review/update of the clustered mirror procedure into its own BZ in the interest of closing out this multi-part BZ. Updating that procedure will require a small amount of discussion about what it is that we want to be showing at this point.  That new BZ is this:

https://bugzilla.redhat.com/show_bug.cgi?id=1513721

I have incorporated all of John's review comments and republished the LVM and GFS2 manuals.

The updated section on LVM volumes in a cluster (section 1.4) is here:

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/logical_volume_manager_administration/lvm_cluster_overview

The updated section on creating volume groups in a cluster (4.3.3) is here:

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/logical_volume_manager_administration/vg_admin#VG_create_cluster

The updated section on configuring GFS2/LVM in a cluster is here:

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/global_file_system_2/ch-clustsetup-gfs2